-OBJS=skindle.o md5.o sha1.o b64.o
+OBJS=skindle.o md5.o sha1.o b64.o skinutils.o cbuf.o mobi.o tpz.o
CC=gcc
LD=gcc
EXE=skindle
-EXTRALIBS=-lCrypt32
+EXTRALIBS=libz.a -lCrypt32 -lAdvapi32
+CFLAGS=-mno-cygwin
#use the following to strip your binary
-LDFLAGS=-s
+LDFLAGS=-s -mno-cygwin
+#LDFLAGS=-mno-cygwin
all: $(EXE)
%.o: %.c
- $(CC) -c $(CFLAGS) $(INC) $< -o $@
+ $(CC) -c $(CFLAGS) -g $(INC) $< -o $@
$(EXE): $(OBJS)
- $(LD) $(LDFLAGS) -o $@ $(OBJS) $(EXTRALIBS)
+ $(LD) $(LDFLAGS) -o $@ -g $(OBJS) $(EXTRALIBS)
clean:
-@rm *.o
/*
- Copyright 2010 BartSimpson
+ Copyright 2010 BartSimpson aka skindle
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
*/
/*
- * Dependencies: none
- * build on cygwin: gcc -o skindle skindle.c md5.c sha1.c b64.c -lCrypt32
- * Under cygwin, you can just type make to build it.
- * While the binary builds if you use the -mno-cygwin switch, it fails to
- * work for some reason. The code should compile with Visual Studio, just
- * add all the files to a project and add the Crypt32.lib dependency and
- * it should build as a Win32 console app.
+ * Dependencies: zlib (included)
+ * build on cygwin using make and the included make file
+ * A fully functionaly windows executable is included
*/
/*
* Requires your kindle.info file which can be found in something like:
* <User home>\...\Amazon\Kindle For PC\{AMAwzsaPaaZAzmZzZQzgZCAkZ3AjA_AY}
* where ... varies by platform but is "Local Settings\Application Data" on XP
+ * skindle will attempt to find this file automatically.
*/
/*
You guys shouldn't need to spend all your time responding to all the
changes Amazon is going to force you to make in unswindle each time
the release a new version.
+ CMBDTC - nice work on the topaz break!
Lawrence Lessig - You are my hero. 'Nuff said.
+ Cory Doctorow - A voice of reason in a sea of insanity
Thumbs down: Disney, MPAA, RIAA - you guys suck. Making billions off
of the exploitation of works out of copyright while vigourously
pushing copyright extension to prevent others from doing the same
PID values.
Installing:
-A cygwin compatable binary is included. You need a minimal cygwin
-installation in order to run it. To build from source, you will need
-cygwin with gcc and make. This has not been tested with Visual Studio.
+A compiled binary is included. Though it was built using cygwin, it
+should not require a cygwin installation in order to run it. To build
+from source, you will need cygwin with gcc and make.
+This has not been tested with Visual Studio, though you may be able to
+pile all the files into a project and add the Crypt32.lib, Advapi32 and
+zlib1 dependencies to build it.
-Usage:
-./skindle <drm'ed prc file> <name of output file> <kindle.info path>
-You need to locate your kindle.info file somewhere on your system.
-You can copy it to a local directory, but you need to refer to it
-each time you run skindle.
+usage: ./skindle [-d] [-v] -i <ebook file> -o <output file> [-k kindle.info file] [-p pid]
+ -d optional, for topaz files only, produce a decompressed output file
+ -i required name of the input mobi or topaz file
+ -o required name of the output file to generate
+ -k optional kindle.info path
+ -v dump the contents of kindle.info
+ -p additional PID values to attempt (can specifiy multiple times)
+
+You only need to specify a kindle.info path if skindle can't find
+your kindle.info file automatically
\ No newline at end of file
--- /dev/null
+/*
+ Copyright 2010 BartSimpson aka skindle
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+#include <stdlib.h>
+#include <string.h>
+#include "cbuf.h"
+
+cbuf *b_new(unsigned int size) {
+ cbuf *b = (cbuf*)calloc(sizeof(cbuf), 1);
+ if (b) {
+ b->buf = (unsigned char *)malloc(size);
+ b->size = b->buf ? size : 0;
+ }
+ return b;
+}
+
+void b_free(cbuf *b) {
+ if (b) {
+ free(b->buf);
+ free(b);
+ }
+}
+
+void b_add_byte(cbuf *b, unsigned char ch) {
+ if (b == NULL) return;
+ if (b->idx == b->size) {
+ unsigned char *p = realloc(b->buf, b->size * 2);
+ if (p) {
+ b->buf = p;
+ b->size = b->size * 2;
+ }
+ }
+ if (b->idx < b->size) {
+ b->buf[b->idx++] = ch;
+ }
+}
+
+void b_add_buf(cbuf *b, unsigned char *buf, unsigned int len) {
+ if (b == NULL) return;
+ unsigned int new_sz = b->idx + len;
+ while (b->size < new_sz) {
+ unsigned char *p = realloc(b->buf, b->size * 2);
+ if (p) {
+ b->buf = p;
+ b->size = b->size * 2;
+ }
+ else break;
+ }
+ if ((b->idx + len) <= b->size) {
+ memcpy(b->buf + b->idx, buf, len);
+ b->idx += len;
+ }
+}
+
+void b_add_str(cbuf *b, const char *buf) {
+ if (b == NULL) return;
+ unsigned int len = strlen(buf);
+ unsigned int new_sz = b->idx + len;
+ while (b->size < new_sz) {
+ unsigned char *p = realloc(b->buf, b->size * 2);
+ if (p) {
+ b->buf = p;
+ b->size = b->size * 2;
+ }
+ else break;
+ }
+ if ((b->idx + len) <= b->size) {
+ memcpy(b->buf + b->idx, buf, len);
+ b->idx += len;
+ }
+}
+
--- /dev/null
+/*
+ Copyright 2010 BartSimpson aka skindle
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+#ifndef __CBUF_H
+#define __CBUF_H
+
+typedef struct _cbuf {
+ unsigned int size; //current size
+ unsigned int idx; //current position
+ unsigned char *buf;
+} cbuf;
+
+cbuf *b_new(unsigned int size);
+void b_free(cbuf *b);
+void b_add_byte(cbuf *b, unsigned char ch);
+void b_add_buf(cbuf *b, unsigned char *buf, unsigned int len);
+void b_add_str(cbuf *b, const char *buf);
+
+#endif
--- /dev/null
+/*
+ Copyright 2010 BartSimpson aka skindle
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include "mobi.h"
+
+unsigned char *getExthData(MobiFile *book, unsigned int type, unsigned int *len) {
+ unsigned int i;
+ unsigned int exthRecords = bswap_l(book->exth->recordCount);
+ ExthRecHeader *erh = book->exth->records;
+
+ *len = 0;
+
+ for (i = 0; i < exthRecords; i++) {
+ unsigned int recType = bswap_l(erh->type);
+ unsigned int recLen = bswap_l(erh->len);
+
+ if (recLen < 8) {
+ fprintf(stderr, "Invalid exth record length %d\n", i);
+ return NULL;
+ }
+
+ if (recType == type) {
+ *len = recLen - 8;
+ return (unsigned char*)(erh + 1);
+ }
+ erh = (ExthRecHeader*)(recLen + (char*)erh);
+ }
+ return NULL;
+}
+
+void enumExthRecords(ExthHeader *eh) {
+ unsigned int exthRecords = bswap_l(eh->recordCount);
+ unsigned int i;
+ unsigned char *data;
+ ExthRecHeader *erh = eh->records;
+
+ for (i = 0; i < exthRecords; i++) {
+ unsigned int recType = bswap_l(erh->type);
+ unsigned int recLen = bswap_l(erh->len);
+
+ fprintf(stderr, "%d: type - %d, len %d\n", i, recType, recLen);
+
+ if (recLen < 8) {
+ fprintf(stderr, "Invalid exth record length %d\n", i);
+ return;
+ }
+
+ data = (unsigned char*)(erh + 1);
+ switch (recType) {
+ case 1: //drm_server_id
+ fprintf(stderr, "drm_server_id: %s\n", data);
+ break;
+ case 2: //drm_commerce_id
+ fprintf(stderr, "drm_commerce_id: %s\n", data);
+ break;
+ case 3: //drm_ebookbase_book_id
+ fprintf(stderr, "drm_ebookbase_book_id: %s\n", data);
+ break;
+ case 100: //author
+ fprintf(stderr, "author: %s\n", data);
+ break;
+ case 101: //publisher
+ fprintf(stderr, "publisher: %s\n", data);
+ break;
+ case 106: //publishingdate
+ fprintf(stderr, "publishingdate: %s\n", data);
+ break;
+ case 113: //asin
+ fprintf(stderr, "asin: %s\n", data);
+ break;
+ case 208: //book unique drm key
+ fprintf(stderr, "book drm key: %s\n", data);
+ break;
+ case 503: //updatedtitle
+ fprintf(stderr, "updatedtitle: %s\n", data);
+ break;
+ default:
+ break;
+ }
+ erh = (ExthRecHeader*)(recLen + (char*)erh);
+ }
+
+}
+
+//implementation of Pukall Cipher 1
+unsigned char *PC1(unsigned char *key, unsigned int klen, unsigned char *src,
+ unsigned char *dest, unsigned int len, int decryption) {
+ unsigned int sum1 = 0;
+ unsigned int sum2 = 0;
+ unsigned int keyXorVal = 0;
+ unsigned short wkey[8];
+ unsigned int i;
+ if (klen != 16) {
+ fprintf(stderr, "Bad key length!\n");
+ return NULL;
+ }
+ for (i = 0; i < 8; i++) {
+ wkey[i] = (key[i * 2] << 8) | key[i * 2 + 1];
+ }
+ for (i = 0; i < len; i++) {
+ unsigned int temp1 = 0;
+ unsigned int byteXorVal = 0;
+ unsigned int j, curByte;
+ for (j = 0; j < 8; j++) {
+ temp1 ^= wkey[j];
+ sum2 = (sum2 + j) * 20021 + sum1;
+ sum1 = (temp1 * 346) & 0xFFFF;
+ sum2 = (sum2 + sum1) & 0xFFFF;
+ temp1 = (temp1 * 20021 + 1) & 0xFFFF;
+ byteXorVal ^= temp1 ^ sum2;
+ }
+ curByte = src[i];
+ if (!decryption) {
+ keyXorVal = curByte * 257;
+ }
+ curByte = ((curByte ^ (byteXorVal >> 8)) ^ byteXorVal) & 0xFF;
+ if (decryption) {
+ keyXorVal = curByte * 257;
+ }
+ for (j = 0; j < 8; j++) {
+ wkey[j] ^= keyXorVal;
+ }
+ dest[i] = curByte;
+ }
+ return dest;
+}
+
+unsigned int getSizeOfTrailingDataEntry(unsigned char *ptr, unsigned int size) {
+ unsigned int bitpos = 0;
+ unsigned int result = 0;
+ if (size <= 0) {
+ return result;
+ }
+ while (1) {
+ unsigned int v = ptr[size - 1];
+ result |= (v & 0x7F) << bitpos;
+ bitpos += 7;
+ size -= 1;
+ if ((v & 0x80) != 0 || (bitpos >= 28) || (size == 0)) {
+ return result;
+ }
+ }
+}
+
+unsigned int getSizeOfTrailingDataEntries(unsigned char *ptr, unsigned int size, unsigned int flags) {
+ unsigned int num = 0;
+ unsigned int testflags = flags >> 1;
+ while (testflags) {
+ if (testflags & 1) {
+ num += getSizeOfTrailingDataEntry(ptr, size - num);
+ }
+ testflags >>= 1;
+ }
+ if (flags & 1) {
+ num += (ptr[size - num - 1] & 0x3) + 1;
+ }
+ return num;
+}
+
+unsigned char *parseDRM(unsigned char *data, unsigned int count, unsigned char *pid, unsigned int pidlen) {
+ unsigned int i;
+ unsigned char temp_key_sum = 0;
+ unsigned char *found_key = NULL;
+ unsigned char *keyvec1 = "\x72\x38\x33\xB0\xB4\xF2\xE3\xCA\xDF\x09\x01\xD6\xE2\xE0\x3F\x96";
+ unsigned char temp_key[16];
+
+ memset(temp_key, 0, 16);
+ memcpy(temp_key, pid, 8);
+ PC1(keyvec1, 16, temp_key, temp_key, 16, 0);
+
+ for (i = 0; i < 16; i++) {
+ temp_key_sum += temp_key[i];
+ }
+
+ for (i = 0; i < count; i++) {
+ unsigned char kk[32];
+ vstruct *v = (vstruct*)(data + i * 0x30);
+ kstruct *k = (kstruct*)PC1(temp_key, 16, v->cookie, kk, 32, 1);
+
+ if (v->verification == k->ver && v->cksum[0] == temp_key_sum &&
+ (bswap_l(k->flags) & 0x1F) == 1) {
+ found_key = (unsigned char*)malloc(16);
+ memcpy(found_key, k->finalkey, 16);
+ break;
+ }
+ }
+ return found_key;
+}
+
+void freeMobiFile(MobiFile *book) {
+ free(book->hr);
+ free(book->record0);
+ free(book);
+}
+
+MobiFile *parseMobiHeader(FILE *f) {
+ unsigned int numRecs, i, magic;
+ MobiFile *book = (MobiFile*)calloc(sizeof(MobiFile), 1);
+ book->f = f;
+ if (fread(&book->pdb, sizeof(PDB), 1, f) != 1) {
+ fprintf(stderr, "Failed to read Palm headers\n");
+ free(book);
+ return NULL;
+ }
+
+ //do BOOKMOBI check
+ if (book->pdb.type != 0x4b4f4f42 || book->pdb.creator != 0x49424f4d) {
+ fprintf(stderr, "Invalid header type or creator\n");
+ free(book);
+ return NULL;
+ }
+
+ book->recs = bswap_s(book->pdb.numRecs);
+
+ book->hr = (HeaderRec*)malloc(book->recs * sizeof(HeaderRec));
+ if (fread(book->hr, sizeof(HeaderRec), book->recs, f) != book->recs) {
+ fprintf(stderr, "Failed read of header record\n");
+ freeMobiFile(book);
+ return NULL;
+ }
+
+ book->record0_offset = bswap_l(book->hr[0].offset);
+ book->record0_size = bswap_l(book->hr[1].offset) - book->record0_offset;
+
+ if (fseek(f, book->record0_offset, SEEK_SET) == -1) {
+ fprintf(stderr, "bad seek to header record offset\n");
+ freeMobiFile(book);
+ return NULL;
+ }
+
+ book->record0 = (unsigned char*)malloc(book->record0_size);
+
+ if (fread(book->record0, book->record0_size, 1, f) != 1) {
+ fprintf(stderr, "bad read of record0\n");
+ freeMobiFile(book);
+ return NULL;
+ }
+
+ book->pdh = (PalmDocHeader*)(book->record0);
+ if (bswap_s(book->pdh->encryptionType) != 2) {
+ fprintf(stderr, "MOBI BOOK is not encrypted\n");
+ freeMobiFile(book);
+ return NULL;
+ }
+
+ book->textRecs = bswap_s(book->pdh->recordCount);
+
+ book->mobi = (MobiHeader*)(book->pdh + 1);
+ if (book->mobi->id != 0x49424f4d) {
+ fprintf(stderr, "MOBI header not found\n");
+ freeMobiFile(book);
+ return NULL;
+ }
+
+ book->mobiLen = bswap_l(book->mobi->hdrLen);
+ book->extra_data_flags = 0;
+
+ if (book->mobiLen >= 0xe4) {
+ book->extra_data_flags = bswap_s(book->mobi->extra_flags);
+ }
+
+ if ((bswap_l(book->mobi->exthFlags) & 0x40) == 0) {
+ fprintf(stderr, "Missing exth header\n");
+ freeMobiFile(book);
+ return NULL;
+ }
+
+ book->exth = (ExthHeader*)(book->mobiLen + (char*)(book->mobi));
+ if (book->exth->id != 0x48545845) {
+ fprintf(stderr, "EXTH header not found\n");
+ freeMobiFile(book);
+ return NULL;
+ }
+
+ //if you want a list of EXTH records, uncomment the following
+// enumExthRecords(exth);
+
+ book->drmCount = bswap_l(book->mobi->drmCount);
+
+ if (book->drmCount == 0) {
+ fprintf(stderr, "no PIDs found in this file\n");
+ freeMobiFile(book);
+ return NULL;
+ }
+
+ return book;
+}
+
+int writeMobiOutputFile(MobiFile *book, FILE *out, unsigned char *key,
+ unsigned int drmOffset, unsigned int drm_len) {
+ int i;
+ struct stat statbuf;
+
+ fstat(fileno(book->f), &statbuf);
+
+ // kill the drm keys
+ memset(book->record0 + drmOffset, 0, drm_len);
+ // kill the drm pointers
+ book->mobi->drmOffset = 0xffffffff;
+ book->mobi->drmCount = book->mobi->drmSize = book->mobi->drmFlags = 0;
+ // clear the crypto type
+ book->pdh->encryptionType = 0;
+
+ fwrite(&book->pdb, sizeof(PDB), 1, out);
+ fwrite(book->hr, sizeof(HeaderRec), book->recs, out);
+ fwrite("\x00\x00", 1, 2, out);
+ fwrite(book->record0, book->record0_size, 1, out);
+
+ //need to zero out exth 209 data
+ for (i = 1; i < book->recs; i++) {
+ unsigned int offset = bswap_l(book->hr[i].offset);
+ unsigned int len, extra_size = 0;
+ unsigned char *rec;
+ if (i == (book->recs - 1)) { //last record extends to end of file
+ len = statbuf.st_size - offset;
+ }
+ else {
+ len = bswap_l(book->hr[i + 1].offset) - offset;
+ }
+ //make sure we are at proper offset
+ while (ftell(out) < offset) {
+ fwrite("\x00", 1, 1, out);
+ }
+ rec = (unsigned char *)malloc(len);
+ if (fseek(book->f, offset, SEEK_SET) != 0) {
+ fprintf(stderr, "Failed record seek on input\n");
+ freeMobiFile(book);
+ free(rec);
+ return 0;
+ }
+ if (fread(rec, len, 1, book->f) != 1) {
+ fprintf(stderr, "Failed record read on input\n");
+ freeMobiFile(book);
+ free(rec);
+ return 0;
+ }
+
+ if (i <= book->textRecs) { //decrypt if necessary
+ extra_size = getSizeOfTrailingDataEntries(rec, len, book->extra_data_flags);
+ PC1(key, 16, rec, rec, len - extra_size, 1);
+ }
+ fwrite(rec, len, 1, out);
+ free(rec);
+ }
+ return 1;
+}
--- /dev/null
+/*
+ Copyright 2010 BartSimpson aka skindle
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+#ifndef __MOBI_H
+#define __MOBI_H
+
+#include <stdio.h>
+#include "skinutils.h"
+
+#pragma pack(2)
+typedef struct _PDB {
+ char name[32];
+ unsigned short attrib;
+ unsigned short version;
+ unsigned int created;
+ unsigned int modified;
+ unsigned int backup;
+ unsigned int modNum;
+ unsigned int appInfoID;
+ unsigned int sortInfoID;
+ unsigned int type;
+ unsigned int creator;
+ unsigned int uniqueIDseed;
+ unsigned int nextRecordListID;
+ unsigned short numRecs;
+} PDB;
+
+typedef struct _HeaderRec {
+ unsigned int offset;
+ unsigned int attribId;
+} HeaderRec;
+
+#define attrib(x) ((x)&0xFF)
+#define id(x) (bswap_l((x) & 0xFFFFFF00))
+
+typedef struct _PalmDocHeader {
+ unsigned short compression;
+ unsigned short reserverd1;
+ unsigned int textLength;
+ unsigned short recordCount;
+ unsigned short recordSize;
+ unsigned short encryptionType;
+ unsigned short reserved2;
+} PalmDocHeader;
+
+
+//checked lengths are 24, 116, 208, 228
+typedef struct _MobiHeader {
+ unsigned int id;
+ unsigned int hdrLen;
+ unsigned int type;
+ unsigned int encoding;
+ unsigned int uniqueId;
+ unsigned int generator;
+ unsigned char reserved1[40];
+ unsigned int firstNonBookIdx;
+ unsigned int nameOffset;
+ unsigned int nameLength;
+ unsigned int language;
+ unsigned int inputLang;
+ unsigned int outputLang;
+ unsigned int formatVersion;
+ unsigned int firstImageIdx;
+ unsigned char unknown1[16];
+ unsigned int exthFlags;
+ unsigned char unknown2[36];
+ unsigned int drmOffset;
+ unsigned int drmCount;
+ unsigned int drmSize;
+ unsigned int drmFlags;
+ unsigned char unknown3[58];
+ unsigned short extra_flags;
+} MobiHeader;
+
+typedef struct _ExthRecHeader {
+ unsigned int type;
+ unsigned int len;
+} ExthRecHeader;
+
+typedef struct _ExthHeader {
+ unsigned int id;
+ unsigned int hdrLen;
+ unsigned int recordCount;
+ ExthRecHeader records[1];
+} ExthHeader;
+
+typedef struct _vstruct {
+ unsigned int verification;
+ unsigned int size;
+ unsigned int type;
+ unsigned char cksum[4];
+ unsigned char cookie[32];
+} vstruct;
+
+typedef struct _kstruct {
+ unsigned int ver;
+ unsigned int flags;
+ unsigned char finalkey[16];
+ unsigned int expiry;
+ unsigned int expiry2;
+} kstruct;
+
+typedef struct _MobiFile {
+ FILE *f;
+ PDB pdb;
+ HeaderRec *hr;
+ PalmDocHeader *pdh;
+ MobiHeader *mobi;
+ ExthHeader *exth;
+ unsigned char *record0;
+ unsigned int record0_offset;
+ unsigned int record0_size;
+ unsigned int mobiLen;
+ unsigned int extra_data_flags;
+ unsigned int recs;
+ unsigned int drmCount;
+ unsigned int textRecs;
+ PidList *pids; //extra pids to try from command line
+} MobiFile;
+
+unsigned char *getExthData(MobiFile *book, unsigned int type, unsigned int *len);
+void enumExthRecords(ExthHeader *eh);
+unsigned char *PC1(unsigned char *key, unsigned int klen, unsigned char *src,
+ unsigned char *dest, unsigned int len, int decryption);
+unsigned int getSizeOfTrailingDataEntry(unsigned char *ptr, unsigned int size);
+unsigned int getSizeOfTrailingDataEntries(unsigned char *ptr, unsigned int size, unsigned int flags);
+unsigned char *parseDRM(unsigned char *data, unsigned int count, unsigned char *pid, unsigned int pidlen);
+
+void freeMobiFile(MobiFile *book);
+MobiFile *parseMobiHeader(FILE *f);
+int writeMobiOutputFile(MobiFile *book, FILE *out, unsigned char *key,
+ unsigned int drmOffset, unsigned int drm_len);
+
+#endif
/*
- Copyright 2010 BartSimpson
+ Copyright 2010 BartSimpson aka skindle
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
/*
* Dependencies: none
- * build on cygwin: gcc -o skindle skindle.c md5.c sha1.c b64.c -lCrypt32
+ * build on cygwin:
+ * gcc -o skindle skindle.c md5.c sha1.c b64.c -lCrypt32
+ * or gcc -o skindle skindle.c md5.c sha1.c b64.c -lCrypt32 -mno-cygwin
* Under cygwin, you can just type make to build it.
- * While the binary builds if you use the -mno-cygwin switch, it fails to
- * work for some reason. The code should compile with Visual Studio, just
- * add all the files to a project and add the Crypt32.lib dependency and
- * it should build as a Win32 console app.
+ * The code should compile with Visual Studio, just add all the files to
+ * a project and add the Crypt32.lib dependency and it should build as a
+ * Win32 console app.
*/
/*
#include <sys/types.h>
#include <sys/stat.h>
-//If you prefer to use openssl uncomment the following
-//#include <openssl/sha.h>
-//#include <openssl/md5.h>
+#include "skinutils.h"
+#include "cbuf.h"
+#include "mobi.h"
+#include "tpz.h"
-//If you prefer to use openssl remove the following 2 line
-#include "md5.h"
-#include "sha1.h"
+#include "zlib.h"
-unsigned int base64(unsigned char *inbuf, unsigned int len, unsigned char *outbuf);
-
-/* The kindle.info file created when you install KindleForPC is a set
- * of key:value pairs delimited by '{'. The keys and values are encoded
- * in a variety of ways. Keys are the mazama64 encoded md5 hash of the
- * key name, while values are the mazama64 encoding of the blob returned
- * by the Windows CryptProtectData function. The use of CryptProtectData
- * is what locks things to a particular user/machine
-
- * kindle.info layout
-
- * Key:AbaZZ6z4a7ZxzLzkZcaqauZMZjZ_Ztz6 ("kindle.account.tokens")
- * Value: mazama64Encode(CryptProtectData(some sha1 hash))
-
- * Key:AsAWa4ZJAQaCZ7A3zrZSaZavZMarZFAw ("kindle.cookie.item")
- * Value: mazama64Encode(CryptProtectData(base64(144 bytes of data)))
-
- * Key:ZHatAla4a-zTzWA-AvaeAvZQzKZ-agAz ("eulaVersionAccepted")
- * Value: mazama64Encode(CryptProtectData(kindle version?))
-
- * Key:ZiajZga7Z9zjZRz7AfZ-zRzUANZNZJzP ("login_date")
- * Value: mazama64Encode(CryptProtectData(registration date))
-
- * Key:ZkzeAUA-Z2ZYA2Z_ayA_ahZEATaEAOaG ("kindle.token.item")
- * Value: mazama64Encode(CryptProtectData(multi-field crypto data))
- * {enc:xxx}{iv:xxx}{key:xxx}{name:xxx}{serial:xxx}
- * enc:base64(binary blob)
- * iv:base64(16 bytes)
- * key:base64(256 bytes)
- * name:base64("ADPTokenEncryptionKey")
- * serial:base64("1")
-
- * Key:aVzrzRAFZ7aIzmASZOzVzIAGAKawzwaU ("login")
- * Value: mazama64Encode(CryptProtectData(your amazon email))
-
- * Key:avalzbzkAcAPAQA5ApZgaOZPzQZzaiaO mazama64Encode(md5("MazamaRandomNumber"))
- * Value: mazama64Encode(CryptProtectData(mazama32Encode(32 bytes random data)))
-
- * Key:zgACzqAjZ2zzAmAJa6ZFaZALaYAlZrz- ("kindle.key.item")
- * Value: mazama64Encode(CryptProtectData(RSA private key)) no password
-
- * Key:zga-aIANZPzbzfZ1zHZWZcA4afZMZcA_ ("kindle.name.info")
- * Value: mazama64Encode(CryptProtectData(your name))
-
- * Key:zlZ9afz1AfAVZjacaqa-ZHa1aIa_ajz7 ("kindle.device.info");
- * Value: mazama64Encode(CryptProtectData(the name of your kindle))
-*/
-
-typedef struct _SimpleMapNode {
- char *key;
- char *value;
-} SimpleMapNode;
-
-typedef struct _MapList {
- SimpleMapNode *node;
- struct _MapList *next;
-} MapList;
-
-MapList *kindleMap;
-
-#pragma pack(2)
-typedef struct _PDB {
- char name[32];
- unsigned short attrib;
- unsigned short version;
- unsigned int created;
- unsigned int modified;
- unsigned int backup;
- unsigned int modNum;
- unsigned int appInfoID;
- unsigned int sortInfoID;
- unsigned int type;
- unsigned int creator;
- unsigned int uniqueIDseed;
- unsigned int nextRecordListID;
- unsigned short numRecs;
-} PDB;
-
-typedef struct _HeaderRec {
- unsigned int offset;
- unsigned int attribId;
-} HeaderRec;
-
-#define attrib(x) ((x)&0xFF)
-#define id(x) (bswap_l((x) & 0xFFFFFF00))
-
-typedef struct _PalmDocHeader {
- unsigned short compression;
- unsigned short reserverd1;
- unsigned int textLength;
- unsigned short recordCount;
- unsigned short recordSize;
- unsigned short encryptionType;
- unsigned short reserved2;
-} PalmDocHeader;
-
-
-//checked lengths are 24, 116, 208, 228
-typedef struct _MobiHeader {
- unsigned int id;
- unsigned int hdrLen;
- unsigned int type;
- unsigned int encoding;
- unsigned int uniqueId;
- unsigned int generator;
- unsigned char reserved1[40];
- unsigned int firstNonBookIdx;
- unsigned int nameOffset;
- unsigned int nameLength;
- unsigned int language;
- unsigned int inputLang;
- unsigned int outputLang;
- unsigned int formatVersion;
- unsigned int firstImageIdx;
- unsigned char unknown1[16];
- unsigned int exthFlags;
- unsigned char unknown2[36];
- unsigned int drmOffset;
- unsigned int drmCount;
- unsigned int drmSize;
- unsigned int drmFlags;
- unsigned char unknown3[58];
- unsigned short extra_flags;
-} MobiHeader;
-
-typedef struct _ExthRecHeader {
- unsigned int type;
- unsigned int len;
-} ExthRecHeader;
-
-typedef struct _ExthHeader {
- unsigned int id;
- unsigned int hdrLen;
- unsigned int recordCount;
- ExthRecHeader records[1];
-} ExthHeader;
-
-
-//#define bswap_l ntohl
-//#define bswap_s ntohs
-
-unsigned short bswap_s(unsigned short s) {
- return (s >> 8) | (s << 8);
-}
-
-unsigned int bswap_l(unsigned int s) {
- unsigned int u = bswap_s(s);
- unsigned int l = bswap_s(s >> 16);
- return (u << 16) | l;
-}
+int processTopaz(FILE *in, char *outFile, int explode, PidList *extraPids) {
+ //had to pile all these up here to please VS2009
+ cbuf *tpzHeaders, *tpzBody;
+ struct stat statbuf;
+ FILE *out;
+ unsigned int i;
+ char *keysRecord, *keysRecordRecord;
+ TopazFile *topaz;
+ char *pid;
+
+ fstat(fileno(in), &statbuf);
-MapList *findNode(char *key) {
- MapList *l;
- for (l = kindleMap; l; l = l->next) {
- if (strcmp(key, l->node->key) == 0) {
- return l;
- }
+ topaz = parseTopazHeader(in);
+ if (topaz == NULL) {
+ fprintf(stderr, "Failed to parse topaz headers\n");
+ return 0;
}
- return NULL;
-}
+ topaz->pids = extraPids;
+
+ tpzHeaders = b_new(topaz->bodyOffset);
+ tpzBody = b_new(statbuf.st_size);
+
+ parseMetadata(topaz);
+
+// dumpMap(bookMetadata);
-void addMapNode(char *key, char *value) {
- MapList *ml = findNode(key);
- if (ml) {
- free(ml->node->value);
- ml->node->value = value;
+ keysRecord = getMetadata(topaz, "keys");
+ if (keysRecord == NULL) {
+ //fail
}
- else {
- SimpleMapNode *smn = (SimpleMapNode*)malloc(sizeof(SimpleMapNode));
- smn->key = key;
- smn->value = value;
- ml = (MapList*)malloc(sizeof(MapList));
- ml->node = smn;
- ml->next = kindleMap;
- kindleMap = ml;
+ keysRecordRecord = getMetadata(topaz, keysRecord);
+ if (keysRecordRecord == NULL) {
+ //fail
}
-}
-void dumpMap() {
- MapList *l;
- for (l = kindleMap; l; l = l->next) {
- fprintf(stderr, "%s:%s\n", l->node->key, l->node->value);
- }
-}
+ pid = getBookPid(keysRecord, strlen(keysRecord), keysRecordRecord, strlen(keysRecordRecord));
-void parseLine(char *line) {
- char *colon = strchr(line, ':');
- if (colon) {
- char *key, *value;
- int len = colon - line;
- key = (char*)malloc(len + 1);
- *colon++ = 0;
- strcpy(key, line);
- len = strlen(colon);
- value = (char*)malloc(len + 1);
- strcpy(value, colon);
- value[len] = 0;
- addMapNode(key, value);
+ if (pid == NULL) {
+ fprintf(stderr, "Failed to extract pid automatically\n");
}
-}
+ else {
+ char *title = getMetadata(topaz, "Title");
+ fprintf(stderr, "PID for %s is: %s\n", title ? title : "UNK", pid);
+ }
+
+/*
+ unique pid is computed as:
+ base64(sha1(idArray . kindleToken . 209_data . 209_tokens))
+*/
-int buildKindleMap(char *infoFile) {
- int result = 0;
- struct stat statbuf;
- if (stat(infoFile, &statbuf) == 0) {
- FILE *fd = fopen(infoFile, "rb");
- char *infoBuf = (char*)malloc(statbuf.st_size + 1);
- infoBuf[statbuf.st_size] = 0;
- if (fread(infoBuf, statbuf.st_size, 1, fd) == 1) {
- char *end = infoBuf + statbuf.st_size;
- char *b = infoBuf, *e;
- while (e = strchr(b, '{')) {
- *e = 0;
- if ((e - b) > 2) {
- parseLine(b);
- }
- e++;
- b = e;
- }
- if (b < end) {
- parseLine(b);
+ //
+ // Decrypt book key
+ //
+
+ Payload *dkey = getBookPayloadRecord(topaz, "dkey", 0, 0);
+
+ if (dkey == NULL) {
+ fprintf(stderr, "No dkey record found\n");
+ freeTopazFile(topaz);
+ return 0;
+ }
+
+ if (pid) {
+ topaz->bookKey = decryptDkeyRecords(dkey, pid);
+ free(pid);
+ }
+ if (topaz->bookKey == NULL) {
+ if (extraPids) {
+ int p;
+ freePayload(dkey);
+ for (p = 0; p < extraPids->numPids; p++) {
+ dkey = getBookPayloadRecord(topaz, "dkey", 0, 0);
+ topaz->bookKey = decryptDkeyRecords(dkey, extraPids->pidList[p]);
+ if (topaz->bookKey) break;
}
}
- else {
- fprintf(stderr, "short read on info file\n");
+ if (topaz->bookKey == NULL) {
+ fprintf(stderr, "No valid pids available, failed to find DRM key\n");
+ freeTopazFile(topaz);
+ freePayload(dkey);
+ return 0;
}
- free(infoBuf);
- fclose(fd);
- return 1;
}
- return 0;
-}
-
-png_crc_table_init(unsigned int *crc_table) {
- unsigned int i;
- for (i = 0; i < 256; i++) {
- unsigned int n = i;
- unsigned int j;
- for (j = 0; j < 8; j++) {
- if (n & 1) {
- n = 0xEDB88320 ^ (n >> 1);
- }
- else {
- n >>= 1;
- }
- }
- crc_table[i] = n;
+
+ fprintf(stderr, "Found a DRM key!\n");
+ for (i = 0; i < 8; i++) {
+ fprintf(stderr, "%02x", topaz->bookKey[i]);
}
-}
+ fprintf(stderr, "\n");
-unsigned int compute_png_crc(unsigned char *input, unsigned int len, unsigned int *crc_table) {
- unsigned int crc = 0;
- unsigned int i;
- for (i = 0; i < len; i++) {
- unsigned int v = (input[i] ^ crc) & 0xff;
- crc = crc_table[v] ^ (crc >> 8);
+ out = fopen(outFile, "wb");
+ if (out == NULL) {
+ fprintf(stderr, "Failed to open output file, quitting\n");
+ freeTopazFile(topaz);
+ freePayload(dkey);
+ return 0;
}
- return crc;
-}
-char *decodeString = "ABCDEFGHIJKLMNPQRSTUVWXYZ123456789";
+ writeTopazOutputFile(topaz, out, tpzHeaders, tpzBody, explode);
+ fwrite(tpzHeaders->buf, tpzHeaders->idx, 1, out);
+ fwrite(tpzBody->buf, tpzBody->idx, 1, out);
+ fclose(out);
+ b_free(tpzHeaders);
+ b_free(tpzBody);
-void doPngDecode(unsigned char *input, unsigned int len, unsigned char *output) {
- unsigned int crc_table[256];
- unsigned int crc, i, x = 0;
- unsigned int *out = (unsigned int*)output;
- png_crc_table_init(crc_table);
- crc = bswap_l(compute_png_crc(input, len, crc_table));
- memset(output, 0, 8);
- for (i = 0; i < len; i++) {
- output[x++] ^= input[i];
- if (x == 8) x = 0;
- }
- out[0] ^= crc;
- out[1] ^= crc;
- for (i = 0; i < 8; i++) {
- unsigned char v = output[i];
- output[i] = decodeString[((((v >> 5) & 3) ^ v) & 0x1F) + (v >> 7)];
- }
+ freePayload(dkey);
+
+ freeTopazFile(topaz);
+ return 1;
}
-char *string_20 = "n5Pr6St7Uv8Wx9YzAb0Cd1Ef2Gh3Jk4M";
-char *string_40 = "AaZzB0bYyCc1XxDdW2wEeVv3FfUuG4g-TtHh5SsIiR6rJjQq7KkPpL8lOoMm9Nn_";
+int processMobi(FILE *prc, char *outFile, PidList *extraPids) {
+ //had to pile all these up here to please VS2009
+ PDB header;
+ cbuf *keyBuf;
+ char *pid;
+ FILE *out;
+ unsigned int i, keyPtrLen;
+ unsigned char *keyPtr;
+ unsigned int drmOffset, drm_len;
+ unsigned char *drm, *found_key = NULL;
+ MobiFile *book;
+ int result;
+
+ book = parseMobiHeader(prc);
-char *mazamaEncode(unsigned char *input, unsigned int len, unsigned char choice) {
- unsigned int i;
- char *enc, *out;
- if (choice == 0x20) enc = string_20;
- else if (choice == 0x40) enc = string_40;
- else return NULL;
- out = (char*)malloc(len * 2 + 1);
- out[len * 2] = 0;
- for (i = 0; i < len; i++) {
- unsigned char v = input[i] + 128;
- unsigned char q = v / choice;
- unsigned char m = v % choice;
- out[i * 2] = enc[q];
- out[i * 2 + 1] = enc[m];
+ if (book == NULL) {
+ fprintf(stderr, "Failed to read mobi headers\n");
+ return 0;
}
- return out;
-}
-unsigned char *mazamaDecode(char *input, int *outlen) {
- unsigned char *out;
- int len = strlen(input);
- char *dec = NULL;
- int i, choice = 0x20;
- *outlen = 0;
- for (i = 0; i < 8 && i < len; i++) {
- if (*input == string_20[i]) {
- dec = string_20;
- break;
- }
- }
- if (dec == NULL) {
- for (i = 0; i < 4 && i < len; i++) {
- if (*input == string_40[i]) {
- dec = string_40;
- choice = 0x40;
- break;
+ book->pids = extraPids;
+ keyPtr = getExthData(book, 209, &keyPtrLen);
+
+ keyBuf = b_new(128);
+ if (keyPtr != NULL) {
+ unsigned int idx;
+ for (idx = 0; idx < keyPtrLen; idx += 5) {
+ unsigned char *rec;
+ unsigned int dlen;
+ unsigned int rtype = bswap_l(*(unsigned int*)(keyPtr + idx + 1));
+ rec = getExthData(book, rtype, &dlen);
+ if (rec != NULL) {
+ b_add_buf(keyBuf, rec, dlen);
}
}
}
- if (dec == NULL) {
- return NULL;
- }
- out = (unsigned char*)malloc(len / 2 + 1);
- out[len / 2] = 0;
- for (i = 0; i < len; i += 2) {
- int q, m, v;
- char *p = strchr(dec, input[i]);
- if (p == NULL) break;
- q = p - dec;
- p = strchr(dec, input[i + 1]);
- if (p == NULL) break;
- m = p - dec;
- v = (choice * q + m) - 128;
- out[(*outlen)++] = (unsigned char)v;
- }
- return out;
-}
-unsigned char *getExthData(ExthHeader *eh, unsigned int type, unsigned int *len) {
- unsigned int i;
- unsigned int exthRecords = bswap_l(eh->recordCount);
- ExthRecHeader *erh = eh->records;
-
- *len = 0;
+ pid = getBookPid(keyPtr, keyPtrLen, keyBuf->buf, keyBuf->idx);
- for (i = 0; i < exthRecords; i++) {
- unsigned int recType = bswap_l(erh->type);
- unsigned int recLen = bswap_l(erh->len);
-
- if (recLen < 8) {
- fprintf(stderr, "Invalid exth record length %d\n", i);
- return NULL;
- }
+ b_free(keyBuf);
- if (recType == type) {
- *len = recLen - 8;
- return (unsigned char*)(erh + 1);
- }
- erh = (ExthRecHeader*)(recLen + (char*)erh);
+ if (pid == NULL) {
+ fprintf(stderr, "Failed to extract pid automatically\n");
}
- return NULL;
-}
-
-void enumExthRecords(ExthHeader *eh) {
- unsigned int exthRecords = bswap_l(eh->recordCount);
- unsigned int i;
- unsigned char *data;
- ExthRecHeader *erh = eh->records;
-
- for (i = 0; i < exthRecords; i++) {
- unsigned int recType = bswap_l(erh->type);
- unsigned int recLen = bswap_l(erh->len);
-
- fprintf(stderr, "%d: type - %d, len %d\n", i, recType, recLen);
-
- if (recLen < 8) {
- fprintf(stderr, "Invalid exth record length %d\n", i);
- return;
- }
-
- data = (unsigned char*)(erh + 1);
- switch (recType) {
- case 1: //drm_server_id
- fprintf(stderr, "drm_server_id: %s\n", data);
- break;
- case 2: //drm_commerce_id
- fprintf(stderr, "drm_commerce_id: %s\n", data);
- break;
- case 3: //drm_ebookbase_book_id
- fprintf(stderr, "drm_ebookbase_book_id: %s\n", data);
- break;
- case 100: //author
- fprintf(stderr, "author: %s\n", data);
- break;
- case 101: //publisher
- fprintf(stderr, "publisher: %s\n", data);
- break;
- case 106: //publishingdate
- fprintf(stderr, "publishingdate: %s\n", data);
- break;
- case 113: //asin
- fprintf(stderr, "asin: %s\n", data);
- break;
- case 208: //book unique drm key
- fprintf(stderr, "book drm key: %s\n", data);
- break;
- case 503: //updatedtitle
- fprintf(stderr, "updatedtitle: %s\n", data);
- break;
- default:
- break;
- }
- erh = (ExthRecHeader*)(recLen + (char*)erh);
+ else {
+ fprintf(stderr, "PID for %s is: %s\n", book->pdb.name, pid);
}
-}
+/*
+ unique pid is computed as:
+ base64(sha1(idArray . kindleToken . 209_data . 209_tokens))
+*/
-//implementation of Pukall Cipher 1
-unsigned char *PC1(unsigned char *key, unsigned int klen, unsigned char *src,
- unsigned char *dest, unsigned int len, int decryption) {
- unsigned int sum1 = 0;
- unsigned int sum2 = 0;
- unsigned int keyXorVal = 0;
- unsigned short wkey[8];
- unsigned int i;
- if (klen != 16) {
- fprintf(stderr, "Bad key length!\n");
- return NULL;
- }
- for (i = 0; i < 8; i++) {
- wkey[i] = (key[i * 2] << 8) | key[i * 2 + 1];
- }
- for (i = 0; i < len; i++) {
- unsigned int temp1 = 0;
- unsigned int byteXorVal = 0;
- unsigned int j, curByte;
- for (j = 0; j < 8; j++) {
- temp1 ^= wkey[j];
- sum2 = (sum2 + j) * 20021 + sum1;
- sum1 = (temp1 * 346) & 0xFFFF;
- sum2 = (sum2 + sum1) & 0xFFFF;
- temp1 = (temp1 * 20021 + 1) & 0xFFFF;
- byteXorVal ^= temp1 ^ sum2;
- }
- curByte = src[i];
- if (!decryption) {
- keyXorVal = curByte * 257;
- }
- curByte = ((curByte ^ (byteXorVal >> 8)) ^ byteXorVal) & 0xFF;
- if (decryption) {
- keyXorVal = curByte * 257;
- }
- for (j = 0; j < 8; j++) {
- wkey[j] ^= keyXorVal;
- }
- dest[i] = curByte;
- }
- return dest;
-}
+ drmOffset = bswap_l(book->mobi->drmOffset);
+
+ drm_len = bswap_l(book->mobi->drmSize);
+ drm = book->record0 + drmOffset;
-unsigned int getSizeOfTrailingDataEntry(unsigned char *ptr, unsigned int size) {
- unsigned int bitpos = 0;
- unsigned int result = 0;
- if (size <= 0) {
- return result;
+ if (pid) {
+ found_key = parseDRM(drm, book->drmCount, pid, 8);
+ free(pid);
}
- while (1) {
- unsigned int v = ptr[size - 1];
- result |= (v & 0x7F) << bitpos;
- bitpos += 7;
- size -= 1;
- if ((v & 0x80) != 0 || (bitpos >= 28) || (size == 0)) {
- return result;
+ if (found_key == NULL) {
+ if (extraPids) {
+ int p;
+ for (p = 0; p < extraPids->numPids; p++) {
+ found_key = parseDRM(drm, book->drmCount, extraPids->pidList[p], 8);
+ if (found_key) break;
+ }
}
- }
-}
-
-unsigned int getSizeOfTrailingDataEntries(unsigned char *ptr, unsigned int size, unsigned int flags) {
- unsigned int num = 0;
- unsigned int testflags = flags >> 1;
- while (testflags) {
- if (testflags & 1) {
- num += getSizeOfTrailingDataEntry(ptr, size - num);
+ if (found_key == NULL) {
+ fprintf(stderr, "No valid pids available, failed to find DRM key\n");
+ freeMobiFile(book);
+ return 0;
}
- testflags >>= 1;
}
- if (flags & 1) {
- num += (ptr[size - num - 1] & 0x3) + 1;
- }
- return num;
-}
-
-typedef struct _vstruct {
- unsigned int verification;
- unsigned int size;
- unsigned int type;
- unsigned char cksum[4];
- unsigned char cookie[32];
-} vstruct;
-
-typedef struct _kstruct {
- unsigned int ver;
- unsigned int flags;
- unsigned char finalkey[16];
- unsigned int expiry;
- unsigned int expiry2;
-} kstruct;
-
-unsigned char *parseDRM(unsigned char *data, unsigned int count, unsigned char *pid, unsigned int pidlen) {
- unsigned int i;
- unsigned char temp_key_sum = 0;
- unsigned char *found_key = NULL;
- unsigned char *keyvec1 = "\x72\x38\x33\xB0\xB4\xF2\xE3\xCA\xDF\x09\x01\xD6\xE2\xE0\x3F\x96";
- unsigned char temp_key[16];
+ fprintf(stderr, "Found a DRM key!\n");
- memset(temp_key, 0, 16);
- memcpy(temp_key, pid, 8);
- PC1(keyvec1, 16, temp_key, temp_key, 16, 0);
-
- for (i = 0; i < 16; i++) {
- temp_key_sum += temp_key[i];
+ out = fopen(outFile, "wb");
+ if (out == NULL) {
+ fprintf(stderr, "Failed to open output file, quitting\n");
+ freeMobiFile(book);
+ free(found_key);
+ return 0;
}
- for (i = 0; i < count; i++) {
- unsigned char kk[32];
- vstruct *v = (vstruct*)(data + i * 0x30);
- kstruct *k = (kstruct*)PC1(temp_key, 16, v->cookie, kk, 32, 1);
+ result = writeMobiOutputFile(book, out, found_key, drmOffset, drm_len);
- if (v->verification == k->ver && v->cksum[0] == temp_key_sum &&
- (bswap_l(k->flags) & 0x1F) == 1) {
- found_key = (unsigned char*)malloc(16);
- memcpy(found_key, k->finalkey, 16);
- break;
- }
+ fclose(out);
+ if (result == 0) {
+ _unlink(outFile);
}
- return found_key;
+ freeMobiFile(book);
+ free(found_key);
+ return result;
}
-#ifndef HEADER_MD5_H
-
-#define MD5_DIGEST_LENGTH 16
-
-#define MD5_CTX md5_state_t
-#define MD5_Init md5_init
-#define MD5_Update md5_append
-#define MD5_Final(x, y) md5_finish(y, x)
-#define MD5 md5
-
-void md5(unsigned char *in, int len, unsigned char *md) {
- MD5_CTX s;
- MD5_Init(&s);
- MD5_Update(&s, in, len);
- MD5_Final(md, &s);
+enum {
+ FileTypeUnk,
+ FileTypeMobi,
+ FileTypeTopaz
+};
+
+int getFileType(FILE *in) {
+ PDB p;
+ int type = FileTypeUnk;
+ fseek(in, 0, SEEK_SET);
+ fread(&p, sizeof(p), 1, in);
+ if (p.type == 0x4b4f4f42 && p.creator == 0x49424f4d) {
+ type = FileTypeMobi;
+ }
+ else if (strncmp(p.name, "TPZ0", 4) == 0) {
+ type = FileTypeTopaz;
+ }
+ fseek(in, 0, SEEK_SET);
+ return type;
}
-#endif
-
-#ifndef HEADER_SHA_H
-#define SHA_DIGEST_LENGTH 20
-#define SHA_CTX sha1_state_s
-#define SHA1_Init sha1_init
-#define SHA1_Update sha1_update
-#define SHA1_Final(x, y) sha1_finish(y, x)
-#define SHA1 sha1
-
-void sha1(unsigned char *in, int len, unsigned char *md) {
- SHA_CTX s;
- SHA1_Init(&s);
- SHA1_Update(&s, in, len);
- SHA1_Final(md, &s);
+void usage() {
+ fprintf(stderr, "usage: ./skindle [-d] [-v] -i <ebook file> -o <output file> [-k kindle.info file] [-p pid]\n");
+ fprintf(stderr, " -d optional, for topaz files only, produce a decompressed output file\n");
+ fprintf(stderr, " -i required name of the input mobi or topaz file\n");
+ fprintf(stderr, " -o required name of the output file to generate\n");
+ fprintf(stderr, " -k optional kindle.info path\n");
+ fprintf(stderr, " -v dump the contents of kindle.info\n");
+ fprintf(stderr, " -p additional PID values to attempt (can specifiy multiple times)\n");
}
-#endif
+
+extern char *optarg;
+extern int optind;
int main(int argc, char **argv) {
//had to pile all these up here to please VS2009
- PDB header;
- struct stat statbuf;
- FILE *prc, *out;
- HeaderRec *hr;
- PalmDocHeader *pdh;
- MobiHeader *mobi;
- ExthHeader *exth;
- long record0_offset;
- unsigned int record0_size, mobiLen, extra_data_flags;
- unsigned int recs, i, drmCount, len209;
- unsigned char *record0, *d209;
- unsigned char *vsn, *username, *mrn_key, *kat_key;
- char drive[256];
- char name[256];
- DWORD nlen = sizeof(name);
- char *d;
- char volumeName[256];
- DWORD volumeSerialNumber;
- char fileSystemNameBuffer[256];
- char volumeID[32];
- unsigned char md5sum[MD5_DIGEST_LENGTH];
- unsigned char sha1sum[SHA_DIGEST_LENGTH];
- unsigned char pid_base64[SHA_DIGEST_LENGTH * 2];
- unsigned int outl;
- SHA_CTX sha1_ctx;
- MapList *ml;
- unsigned int drmOffset, drm_len;
- unsigned char *drm, *found_key;
-
- if (argc != 4) {
- fprintf(stderr, "usage: %s\n <prc file> <output file> <kindle.info file>", argv[0]);
- exit(1);
- }
-
- if (stat(argv[1], &statbuf) != 0) {
- fprintf(stderr, "Unable to stat %s, quitting\n", argv[1]);
- exit(1);
- }
-
- prc = fopen(argv[1], "rb");
- if (prc == NULL) {
- fprintf(stderr, "%s bad open, quitting\n", argv[1]);
- exit(1);
- }
-
- if (fread(&header, sizeof(header), 1, prc) != 1) {
- fprintf(stderr, "%s bad header read, quitting\n", argv[1]);
- fclose(prc);
- exit(1);
- }
-
- //do BOOKMOBI check
- if (header.type != 0x4b4f4f42 || header.creator != 0x49424f4d) {
- fprintf(stderr, "Invalid header type or creator, quitting\n");
- fclose(prc);
- exit(1);
+ FILE *in;
+ int type, explode = 0;
+ int result = 0;
+ int firstArg = 1;
+ int opt;
+ PidList *pids = NULL;
+ char *infile = NULL, *outfile = NULL, *kinfo = NULL;
+ int dump = 0;
+
+ while ((opt = getopt(argc, argv, "vdp:i:o:k:")) != -1) {
+ switch (opt) {
+ case 'v':
+ dump = 1;
+ break;
+ case 'd':
+ explode = 1;
+ break;
+ case 'p': {
+ int l = strlen(optarg);
+ if (l == 10) {
+ if (!verifyPidChecksum(optarg)) {
+ fprintf(stderr, "Invalid pid %s, skipping\n", optarg);
+ break;
+ }
+ optarg[8] = 0;
+ }
+ else if (l != 8) {
+ fprintf(stderr, "Invalid pid length for %s, skipping\n", optarg);
+ break;
+ }
+ if (pids == NULL) {
+ pids = (PidList*)malloc(sizeof(PidList));
+ pids->numPids = 1;
+ pids->pidList[0] = optarg;
+ }
+ else {
+ pids = (PidList*)realloc(pids, sizeof(PidList) + pids->numPids * sizeof(unsigned char*));
+ pids->pidList[pids->numPids++] = optarg;
+ }
+ break;
+ }
+ case 'k':
+ kinfo = optarg;
+ break;
+ case 'i':
+ infile = optarg;
+ break;
+ case 'o':
+ outfile = optarg;
+ break;
+ default: /* '?' */
+ usage();
+ exit(1);
+ }
}
- if (!buildKindleMap(argv[3])) {
- fprintf(stderr, "buildMap failed\n");
- fclose(prc);
- exit(1);
+ if (optind != argc) {
+ fprintf(stderr, "Extra options ignored\n");
}
- recs = bswap_s(header.numRecs);
-
- hr = (HeaderRec*)malloc(recs * sizeof(HeaderRec));
- if (fread(hr, sizeof(HeaderRec), recs, prc) != recs) {
- fprintf(stderr, "Failed read of header record, quitting\n");
- fclose(prc);
+ if (!buildKindleMap(kinfo)) {
+ fprintf(stderr, "buildKindleMap failed\n");
+ usage();
exit(1);
}
- record0_offset = bswap_l(hr[0].offset);
- record0_size = bswap_l(hr[1].offset) - record0_offset;
-
- if (fseek(prc, record0_offset, SEEK_SET) == -1) {
- fprintf(stderr, "bad seek to header record offset, quitting\n");
- fclose(prc);
- exit(1);
+ //The following loop dumps the contents of your kindle.info file
+ if (dump) {
+ MapList *ml;
+// dumpKindleMap();
+ fprintf(stderr, "\nDumping kindle.info contents:\n");
+ for (ml = kindleMap; ml; ml = ml->next) {
+ DATA_BLOB DataIn;
+ DATA_BLOB DataOut;
+ DataIn.pbData = mazamaDecode(ml->value, (int*)&DataIn.cbData);
+ if (CryptUnprotectData(&DataIn, NULL, NULL, NULL, NULL, 1, &DataOut)) {
+ fprintf(stderr, "%s ==> %s\n", ml->key, translateKindleKey(ml->key));
+ fwrite(DataOut.pbData, DataOut.cbData, 1, stderr);
+ fprintf(stderr, "\n\n");
+ LocalFree(DataOut.pbData);
+ }
+ else {
+ fprintf(stderr, "CryptUnprotectData failed\n");
+ }
+ free(DataIn.pbData);
+ }
}
- record0 = (unsigned char*)malloc(record0_size);
-
- if (fread(record0, record0_size, 1, prc) != 1) {
- fprintf(stderr, "bad read of record0, quitting\n");
- free(record0);
- fclose(prc);
+ if (infile == NULL && outfile == NULL) {
+ //special case, user just wants to see kindle.info
+ freeMap(kindleMap);
exit(1);
}
- pdh = (PalmDocHeader*)record0;
- if (bswap_s(pdh->encryptionType) != 2) {
- fprintf(stderr, "MOBI BOOK is not encrypted, quitting\n");
- free(record0);
- fclose(prc);
+ if (infile == NULL) {
+ fprintf(stderr, "Missing input file name\n");
+ usage();
+ freeMap(kindleMap);
exit(1);
}
- mobi = (MobiHeader*)(pdh + 1);
- if (mobi->id != 0x49424f4d) {
- fprintf(stderr, "MOBI header not found, quitting\n");
- free(record0);
- fclose(prc);
+ if (outfile == NULL) {
+ fprintf(stderr, "Missing output file name\n");
+ usage();
+ freeMap(kindleMap);
exit(1);
}
-
- mobiLen = bswap_l(mobi->hdrLen);
- extra_data_flags = 0;
- if (mobiLen >= 0xe4) {
- extra_data_flags = bswap_s(mobi->extra_flags);
- }
-
- if ((bswap_l(mobi->exthFlags) & 0x40) == 0) {
- fprintf(stderr, "Missing exth header, quitting\n");
- free(record0);
- fclose(prc);
+ in = fopen(infile, "rb");
+ if (in == NULL) {
+ fprintf(stderr, "%s bad open, quitting\n", infile);
+ freeMap(kindleMap);
exit(1);
}
- exth = (ExthHeader*)(mobiLen + (char*)mobi);
- if (exth->id != 0x48545845) {
- fprintf(stderr, "EXTH header not found\n");
- free(record0);
- fclose(prc);
- exit(1);
- }
-
- //if you want a list of EXTH records, uncomment the following
-// enumExthRecords(exth);
-
- drmCount = bswap_l(mobi->drmCount);
-
- if (drmCount == 0) {
- fprintf(stderr, "no PIDs found in this file, quitting\n");
- free(record0);
- fclose(prc);
- exit(1);
- }
-
- if (GetUserName(name, &nlen) == 0) {
- fprintf(stderr, "GetUserName failed, quitting\n");
- fclose(prc);
- exit(1);
- }
- fprintf(stderr, "Using UserName = \"%s\"\n", name);
-
- d = getenv("SystemDrive");
- if (d) {
- strcpy(drive, d);
- strcat(drive, "\\");
- }
- else {
- strcpy(drive, "c:\\");
+ type = getFileType(in);
+ if (type == FileTypeTopaz) {
+ result = processTopaz(in, outfile, explode, pids);
}
- fprintf(stderr, "Using SystemDrive = \"%s\"\n", drive);
- if (GetVolumeInformation(drive, volumeName, sizeof(volumeName), &volumeSerialNumber,
- NULL, NULL, fileSystemNameBuffer, sizeof(fileSystemNameBuffer))) {
- sprintf(volumeID, "%u", volumeSerialNumber);
+ else if (type == FileTypeMobi) {
+ result = processMobi(in, outfile, pids);
}
else {
- strcpy(volumeID, "9999999999");
- }
- fprintf(stderr, "Using VolumeSerialNumber = \"%s\"\n", volumeID);
- MD5(volumeID, strlen(volumeID), md5sum);
- vsn = mazamaEncode(md5sum, MD5_DIGEST_LENGTH, 0x20);
-
- MD5(name, strlen(name), md5sum);
- username = mazamaEncode(md5sum, MD5_DIGEST_LENGTH, 0x20);
-
- MD5("MazamaRandomNumber", 18, md5sum);
- mrn_key = mazamaEncode(md5sum, MD5_DIGEST_LENGTH, 0x40);
-
- MD5("kindle.account.tokens", 21, md5sum);
- kat_key = mazamaEncode(md5sum, MD5_DIGEST_LENGTH, 0x40);
-
- SHA1_Init(&sha1_ctx);
-
- ml = findNode(mrn_key);
- if (ml) {
- DATA_BLOB DataIn;
- DATA_BLOB DataOut;
- DataIn.pbData = mazamaDecode(ml->node->value, (int*)&DataIn.cbData);
- if (CryptUnprotectData(&DataIn, NULL, NULL, NULL, NULL, 1, &DataOut)) {
- char *devId = (char*)malloc(DataOut.cbData + 2 * MD5_DIGEST_LENGTH + 1);
- char *finalDevId;
- unsigned char pidbuf[10];
-
-// fprintf(stderr, "CryptUnprotectData success\n");
-// fwrite(DataOut.pbData, DataOut.cbData, 1, stderr);
-// fprintf(stderr, "\n");
-
- memcpy(devId, DataOut.pbData, DataOut.cbData);
- strcpy(devId + DataOut.cbData, vsn);
- strcat(devId + DataOut.cbData, username);
-
-// fprintf(stderr, "Computing sha1 over %d bytes\n", DataOut.cbData + 4 * MD5_DIGEST_LENGTH);
- sha1(devId, DataOut.cbData + 4 * MD5_DIGEST_LENGTH, sha1sum);
- finalDevId = mazamaEncode(sha1sum, SHA_DIGEST_LENGTH, 0x20);
-// fprintf(stderr, "finalDevId: %s\n", finalDevId);
-
- SHA1_Update(&sha1_ctx, finalDevId, strlen(finalDevId));
-
- pidbuf[8] = 0;
- doPngDecode(finalDevId, 4, (unsigned char*)pidbuf);
-// fprintf(stderr, "Device PID: %s\n", pidbuf);
-
- LocalFree(DataOut.pbData);
- free(devId);
- free(finalDevId);
- }
- else {
- fprintf(stderr, "CryptUnprotectData failed, quitting\n");
- free(record0);
- fclose(prc);
- exit(1);
- }
-
- free(DataIn.pbData);
- }
-
- ml = findNode(kat_key);
- if (ml) {
- DATA_BLOB DataIn;
- DATA_BLOB DataOut;
- DataIn.pbData = mazamaDecode(ml->node->value, (int*)&DataIn.cbData);
- if (CryptUnprotectData(&DataIn, NULL, NULL, NULL, NULL, 1, &DataOut)) {
-// fprintf(stderr, "CryptUnprotectData success\n");
-// fwrite(DataOut.pbData, DataOut.cbData, 1, stderr);
-// fprintf(stderr, "\n");
-
- SHA1_Update(&sha1_ctx, DataOut.pbData, DataOut.cbData);
-
- LocalFree(DataOut.pbData);
- }
- else {
- fprintf(stderr, "CryptUnprotectData failed, quitting\n");
- fclose(prc);
- free(record0);
- exit(1);
- }
-
- free(DataIn.pbData);
- }
-
- d209 = getExthData(exth, 209, &len209);
-
- if (d209 != NULL) {
- unsigned char *rec;
- unsigned int idx;
- SHA1_Update(&sha1_ctx, d209, len209);
- for (idx = 0; idx < len209; idx += 5) {
- unsigned int dlen;
- unsigned int rtype = bswap_l(*(unsigned int*)(d209 + idx + 1));
- rec = getExthData(exth, rtype, &dlen);
- if (rec != NULL) {
-// fprintf(stderr, "exth %d: %s\n", rtype, rec);
- SHA1_Update(&sha1_ctx, rec, dlen);
- }
- }
- }
-
- SHA1_Final(sha1sum, &sha1_ctx);
-
- outl = base64(sha1sum, SHA_DIGEST_LENGTH, pid_base64);
-
- pid_base64[8] = 0;
- fprintf(stderr, "PID for %s is: %s\n", header.name, pid_base64);
-
-/*
- unique pid is computed as:
- base64(sha1(idArray . kindleToken . 209_data . 209_tokens))
-*/
-
- free(mrn_key);
- free(kat_key);
- free(vsn);
- free(username);
-
- drmOffset = bswap_l(mobi->drmOffset);
-
- drm_len = bswap_l(mobi->drmSize);
- drm = record0 + drmOffset;
-
- found_key = parseDRM(drm, drmCount, pid_base64, 8);
- if (found_key) {
- fprintf(stderr, "Found a DRM key!\n");
- }
- else {
- fprintf(stderr, "Failed to find DRM key\n");
- free(record0);
- fclose(prc);
+ fprintf(stderr, "%s file type unknown, quitting\n", infile);
+ fclose(in);
+ freeMap(kindleMap);
exit(1);
}
- // kill the drm keys
- memset(record0 + drmOffset, 0, drm_len);
- // kill the drm pointers
- mobi->drmOffset = 0xffffffff;
- mobi->drmCount = mobi->drmSize = mobi->drmFlags = 0;
- // clear the crypto type
- pdh->encryptionType = 0;
-
- out = fopen(argv[2], "wb");
- if (out == NULL) {
- fprintf(stderr, "Failed to open output file, quitting\n");
- free(record0);
- fclose(prc);
- exit(1);
+ fclose(in);
+ if (result) {
+ fprintf(stderr, "Success! Enjoy!\n");
}
-
- fwrite(&header, sizeof(header), 1, out);
- fwrite(hr, sizeof(HeaderRec), recs, out);
- fwrite("\x00\x00", 1, 2, out);
- fwrite(record0, record0_size, 1, out);
-
- //need to zero out exth 209 data
- for (i = 1; i < recs; i++) {
- unsigned int offset = bswap_l(hr[i].offset);
- unsigned int len, extra_size;
- unsigned char *rec;
- if (i == (recs - 1)) { //last record extends to end of file
- len = statbuf.st_size - offset;
- }
- else {
- len = bswap_l(hr[i + 1].offset) - offset;
- }
- //make sure we are at proper offset
- while (ftell(out) < offset) {
- fwrite("\x00", 1, 1, out);
- }
- rec = (unsigned char *)malloc(len);
- if (fseek(prc, offset, SEEK_SET) != 0) {
- fprintf(stderr, "Failed record seek on input, quitting\n");
- free(record0);
- free(rec);
- fclose(prc);
- fclose(out);
- _unlink(argv[2]);
- exit(1);
- }
- if (fread(rec, len, 1, prc) != 1) {
- fprintf(stderr, "Failed record read on input, quitting\n");
- free(record0);
- free(rec);
- fclose(prc);
- fclose(out);
- _unlink(argv[2]);
- exit(1);
- }
-
- extra_size = getSizeOfTrailingDataEntries(rec, len, extra_data_flags);
- PC1(found_key, 16, rec, rec, len - extra_size, 1);
- fwrite(rec, len, 1, out);
- free(rec);
- }
- fprintf(stderr, "Done! Enjoy!\n");
-
-/*
- //The following loop dumps the contents of your kindle.info file
- for (ml = kindleMap; ml; ml = ml->next) {
- DATA_BLOB DataIn;
- DATA_BLOB DataOut;
- DataIn.pbData = mazamaDecode(ml->node->value, (int*)&DataIn.cbData);
- if (CryptUnprotectData(&DataIn, NULL, NULL, NULL, NULL, 1, &DataOut)) {
- fprintf(stderr, "CryptUnprotectData success for key: %s\n", ml->node->key);
- fwrite(DataOut.pbData, DataOut.cbData, 1, stderr);
- fprintf(stderr, "\n");
- LocalFree(DataOut.pbData);
- }
- else {
- fprintf(stderr, "CryptUnprotectData failed\n");
- }
- free(DataIn.pbData);
+ else {
+ fprintf(stderr, "An error occurred, unable to process input file!\n");
}
-*/
-
- fclose(prc);
- fclose(out);
- free(record0);
+
+ freeMap(kindleMap);
return 0;
}
--- /dev/null
+/*
+ Copyright 2010 BartSimpson aka skindle
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+#include <windows.h>
+#include <Wincrypt.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include "skinutils.h"
+
+/* The kindle.info file created when you install KindleForPC is a set
+ * of key:value pairs delimited by '{'. The keys and values are encoded
+ * in a variety of ways. Keys are the mazama64 encoded md5 hash of the
+ * key name, while values are the mazama64 encoding of the blob returned
+ * by the Windows CryptProtectData function. The use of CryptProtectData
+ * is what locks things to a particular user/machine
+
+ * kindle.info layout
+
+ * Key:AbaZZ6z4a7ZxzLzkZcaqauZMZjZ_Ztz6 ("kindle.account.tokens")
+ * Value: mazama64Encode(CryptProtectData(some sha1 hash))
+
+ * Key:AsAWa4ZJAQaCZ7A3zrZSaZavZMarZFAw ("kindle.cookie.item")
+ * Value: mazama64Encode(CryptProtectData(base64(144 bytes of data)))
+
+ * Key:ZHatAla4a-zTzWA-AvaeAvZQzKZ-agAz ("eulaVersionAccepted")
+ * Value: mazama64Encode(CryptProtectData(kindle version?))
+
+ * Key:ZiajZga7Z9zjZRz7AfZ-zRzUANZNZJzP ("login_date")
+ * Value: mazama64Encode(CryptProtectData(registration date))
+
+ * Key:ZkzeAUA-Z2ZYA2Z_ayA_ahZEATaEAOaG ("kindle.token.item")
+ * Value: mazama64Encode(CryptProtectData(multi-field crypto data))
+ * {enc:xxx}{iv:xxx}{key:xxx}{name:xxx}{serial:xxx}
+ * enc:base64(binary blob)
+ * iv:base64(16 bytes)
+ * key:base64(256 bytes)
+ * name:base64("ADPTokenEncryptionKey")
+ * serial:base64("1")
+
+ * Key:aVzrzRAFZ7aIzmASZOzVzIAGAKawzwaU ("login")
+ * Value: mazama64Encode(CryptProtectData(your amazon email))
+
+ * Key:avalzbzkAcAPAQA5ApZgaOZPzQZzaiaO mazama64Encode(md5("MazamaRandomNumber"))
+ * Value: mazama64Encode(CryptProtectData(mazama32Encode(32 bytes random data)))
+
+ * Key:zgACzqAjZ2zzAmAJa6ZFaZALaYAlZrz- ("kindle.key.item")
+ * Value: mazama64Encode(CryptProtectData(RSA private key)) no password
+
+ * Key:zga-aIANZPzbzfZ1zHZWZcA4afZMZcA_ ("kindle.name.info")
+ * Value: mazama64Encode(CryptProtectData(your name))
+
+ * Key:zlZ9afz1AfAVZjacaqa-ZHa1aIa_ajz7 ("kindle.device.info");
+ * Value: mazama64Encode(CryptProtectData(the name of your kindle))
+*/
+
+char *kindleKeys[] = {
+ "AbaZZ6z4a7ZxzLzkZcaqauZMZjZ_Ztz6", "kindle.account.tokens",
+ "AsAWa4ZJAQaCZ7A3zrZSaZavZMarZFAw", "kindle.cookie.item",
+ "ZHatAla4a-zTzWA-AvaeAvZQzKZ-agAz", "eulaVersionAccepted",
+ "ZiajZga7Z9zjZRz7AfZ-zRzUANZNZJzP", "login_date",
+ "ZkzeAUA-Z2ZYA2Z_ayA_ahZEATaEAOaG", "kindle.token.item",
+ "aVzrzRAFZ7aIzmASZOzVzIAGAKawzwaU", "login",
+ "avalzbzkAcAPAQA5ApZgaOZPzQZzaiaO", "MazamaRandomNumber",
+ "zgACzqAjZ2zzAmAJa6ZFaZALaYAlZrz-", "kindle.key.item",
+ "zga-aIANZPzbzfZ1zHZWZcA4afZMZcA_", "kindle.name.info",
+ "zlZ9afz1AfAVZjacaqa-ZHa1aIa_ajz7", "kindle.device.info"
+};
+
+MapList *kindleMap;
+
+unsigned short bswap_s(unsigned short s) {
+ return (s >> 8) | (s << 8);
+}
+
+unsigned int bswap_l(unsigned int s) {
+ unsigned int u = bswap_s(s);
+ unsigned int l = bswap_s(s >> 16);
+ return (u << 16) | l;
+}
+
+char *translateKindleKey(char *key) {
+ int n = sizeof(kindleKeys) / sizeof(char*);
+ int i;
+ for (i = 0; i < n; i += 2) {
+ if (strcmp(key, kindleKeys[i]) == 0) {
+ return kindleKeys[i + 1];
+ }
+ }
+ return NULL;
+}
+
+MapList *findNode(MapList *map, char *key) {
+ MapList *l;
+ for (l = map; l; l = l->next) {
+ if (strcmp(key, l->key) == 0) {
+ return l;
+ }
+ }
+ return NULL;
+}
+
+MapList *findKindleNode(char *key) {
+ return findNode(kindleMap, key);
+}
+
+char *getNodeValue(MapList *map, char *key) {
+ MapList *l;
+ for (l = map; l; l = l->next) {
+ if (strcmp(key, l->key) == 0) {
+ return l->value;
+ }
+ }
+ return NULL;
+}
+
+char *getKindleValue(char *key) {
+ return getNodeValue(kindleMap, key);
+}
+
+MapList *addMapNode(MapList *map, char *key, char *value) {
+ MapList *ml;
+ ml = findNode(map, key);
+ if (ml) {
+ free(ml->value);
+ ml->value = value;
+ return map;
+ }
+ else {
+ ml = (MapList*)malloc(sizeof(MapList));
+ ml->key = key;
+ ml->value = value;
+ ml->next = map;
+ return ml;
+ }
+}
+
+void dumpMap(MapList *m) {
+ MapList *l;
+ for (l = m; l; l = l->next) {
+ fprintf(stderr, "%s:%s\n", l->key, l->value);
+ }
+}
+
+void freeMap(MapList *m) {
+ MapList *n;
+ while (m) {
+ n = m;
+ m = m->next;
+ free(n->key);
+ free(n->value);
+ free(n);
+ }
+}
+
+void parseLine(char *line) {
+ char *colon = strchr(line, ':');
+ if (colon) {
+ char *key, *value;
+ int len = colon - line;
+ key = (char*)malloc(len + 1);
+ *colon++ = 0;
+ strcpy(key, line);
+ len = strlen(colon);
+ value = (char*)malloc(len + 1);
+ strcpy(value, colon);
+ value[len] = 0;
+ kindleMap = addMapNode(kindleMap, key, value);
+ }
+}
+
+void dumpKindleMap() {
+ dumpMap(kindleMap);
+}
+
+int buildKindleMap(char *infoFile) {
+ int result = 0;
+ struct stat statbuf;
+ char ki[512];
+ DWORD len = sizeof(ki);
+ if (infoFile == NULL) {
+ HKEY regkey;
+ fprintf(stderr, "Attempting to locate kindle.info\n");
+ if (RegOpenKey(HKEY_CURRENT_USER, "Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\Shell Folders\\", ®key) != ERROR_SUCCESS) {
+ fprintf(stderr, "Unable to locate kindle.info, please specify path on command line\n");
+ return result;
+ }
+
+// if (RegGetValue(regkey, "Local AppData", NULL, NULL, ki, &len) != ERROR_SUCCESS) {
+ if (RegQueryValueEx(regkey, "Local AppData", NULL, NULL, ki, &len) != ERROR_SUCCESS) {
+ RegCloseKey(regkey);
+ fprintf(stderr, "Unable to locate kindle.info, please specify path on command line\n");
+ return result;
+ }
+ ki[len] = 0;
+ strncat(ki, "\\Amazon\\Kindle For PC\\{AMAwzsaPaaZAzmZzZQzgZCAkZ3AjA_AY}\\kindle.info", sizeof(ki) - 1 - strlen(ki));
+ infoFile = ki;
+ fprintf(stderr, "Found kindle.info location\n");
+ }
+ if (stat(infoFile, &statbuf) == 0) {
+ FILE *fd = fopen(infoFile, "rb");
+ char *infoBuf = (char*)malloc(statbuf.st_size + 1);
+ infoBuf[statbuf.st_size] = 0;
+ if (fread(infoBuf, statbuf.st_size, 1, fd) == 1) {
+ char *end = infoBuf + statbuf.st_size;
+ char *b = infoBuf, *e;
+ while (e = strchr(b, '{')) {
+ *e = 0;
+ if ((e - b) > 2) {
+ parseLine(b);
+ }
+ e++;
+ b = e;
+ }
+ if (b < end) {
+ parseLine(b);
+ }
+ }
+ else {
+ fprintf(stderr, "short read on info file\n");
+ }
+ free(infoBuf);
+ fclose(fd);
+ return 1;
+ }
+ return 0;
+}
+
+static unsigned int crc_table[256];
+
+void png_crc_table_init() {
+ unsigned int i;
+ if (crc_table[255]) return;
+ for (i = 0; i < 256; i++) {
+ unsigned int n = i;
+ unsigned int j;
+ for (j = 0; j < 8; j++) {
+ if (n & 1) {
+ n = 0xEDB88320 ^ (n >> 1);
+ }
+ else {
+ n >>= 1;
+ }
+ }
+ crc_table[i] = n;
+ }
+}
+
+unsigned int do_crc(unsigned char *input, unsigned int len) {
+ unsigned int crc = 0;
+ unsigned int i;
+ png_crc_table_init();
+ for (i = 0; i < len; i++) {
+ unsigned int v = (input[i] ^ crc) & 0xff;
+ crc = crc_table[v] ^ (crc >> 8);
+ }
+ return crc;
+}
+
+char *decodeString = "ABCDEFGHIJKLMNPQRSTUVWXYZ123456789";
+
+void doPngDecode(unsigned char *input, unsigned int len, unsigned char *output) {
+// unsigned int crc_table[256];
+ unsigned int crc, i, x = 0;
+ unsigned int *out = (unsigned int*)output;
+ crc = bswap_l(do_crc(input, len));
+ memset(output, 0, 8);
+ for (i = 0; i < len; i++) {
+ output[x++] ^= input[i];
+ if (x == 8) x = 0;
+ }
+ out[0] ^= crc;
+ out[1] ^= crc;
+ for (i = 0; i < 8; i++) {
+ unsigned char v = output[i];
+ output[i] = decodeString[((((v >> 5) & 3) ^ v) & 0x1F) + (v >> 7)];
+ }
+}
+
+static char *string_32 = "n5Pr6St7Uv8Wx9YzAb0Cd1Ef2Gh3Jk4M";
+static char *string_64 = "AaZzB0bYyCc1XxDdW2wEeVv3FfUuG4g-TtHh5SsIiR6rJjQq7KkPpL8lOoMm9Nn_";
+
+char *mazamaEncode32(unsigned char *input, unsigned int len) {
+ return mazamaEncode(input, len, 32);
+}
+
+char *mazamaEncode64(unsigned char *input, unsigned int len) {
+ return mazamaEncode(input, len, 64);
+}
+
+char *mazamaEncode(unsigned char *input, unsigned int len, unsigned char choice) {
+ unsigned int i;
+ char *enc, *out;
+ if (choice == 0x20) enc = string_32;
+ else if (choice == 0x40) enc = string_64;
+ else return NULL;
+ out = (char*)malloc(len * 2 + 1);
+ out[len * 2] = 0;
+ for (i = 0; i < len; i++) {
+ unsigned char v = input[i] + 128;
+ unsigned char q = v / choice;
+ unsigned char m = v % choice;
+ out[i * 2] = enc[q];
+ out[i * 2 + 1] = enc[m];
+ }
+ return out;
+}
+
+unsigned char *mazamaDecode(char *input, int *outlen) {
+ unsigned char *out;
+ int len = strlen(input);
+ char *dec = NULL;
+ int i, choice = 0x20;
+ *outlen = 0;
+ for (i = 0; i < 8 && i < len; i++) {
+ if (*input == string_32[i]) {
+ dec = string_32;
+ break;
+ }
+ }
+ if (dec == NULL) {
+ for (i = 0; i < 4 && i < len; i++) {
+ if (*input == string_64[i]) {
+ dec = string_64;
+ choice = 0x40;
+ break;
+ }
+ }
+ }
+ if (dec == NULL) {
+ return NULL;
+ }
+ out = (unsigned char*)malloc(len / 2 + 1);
+ out[len / 2] = 0;
+ for (i = 0; i < len; i += 2) {
+ int q, m, v;
+ char *p = strchr(dec, input[i]);
+ if (p == NULL) break;
+ q = p - dec;
+ p = strchr(dec, input[i + 1]);
+ if (p == NULL) break;
+ m = p - dec;
+ v = (choice * q + m) - 128;
+ out[(*outlen)++] = (unsigned char)v;
+ }
+ return out;
+}
+
+#ifndef HEADER_MD5_H
+
+void md5(unsigned char *in, int len, unsigned char *md) {
+ MD5_CTX s;
+ MD5_Init(&s);
+ MD5_Update(&s, in, len);
+ MD5_Final(md, &s);
+}
+#endif
+
+#ifndef HEADER_SHA_H
+
+void sha1(unsigned char *in, int len, unsigned char *md) {
+ SHA_CTX s;
+ SHA1_Init(&s);
+ SHA1_Update(&s, in, len);
+ SHA1_Final(md, &s);
+}
+#endif
+
+char *getBookPid(unsigned char *keys, unsigned int klen, unsigned char *keysValue, unsigned int kvlen) {
+ unsigned char *vsn, *username, *mrn_key, *kat_key, *pid;
+ char drive[256];
+ char name[256];
+ DWORD nlen = sizeof(name);
+ char *d;
+ char volumeName[256];
+ DWORD volumeSerialNumber;
+ char fileSystemNameBuffer[256];
+ char volumeID[32];
+ unsigned char md5sum[MD5_DIGEST_LENGTH];
+ unsigned char sha1sum[SHA_DIGEST_LENGTH];
+ SHA_CTX sha1_ctx;
+ char *mv;
+
+ if (GetUserName(name, &nlen) == 0) {
+ fprintf(stderr, "GetUserName failed\n");
+ return NULL;
+ }
+ fprintf(stderr, "Using UserName = \"%s\"\n", name);
+
+ d = getenv("SystemDrive");
+ if (d) {
+ strcpy(drive, d);
+ strcat(drive, "\\");
+ }
+ else {
+ strcpy(drive, "c:\\");
+ }
+ fprintf(stderr, "Using SystemDrive = \"%s\"\n", drive);
+ if (GetVolumeInformation(drive, volumeName, sizeof(volumeName), &volumeSerialNumber,
+ NULL, NULL, fileSystemNameBuffer, sizeof(fileSystemNameBuffer))) {
+ sprintf(volumeID, "%u", volumeSerialNumber);
+ }
+ else {
+ strcpy(volumeID, "9999999999");
+ }
+ fprintf(stderr, "Using VolumeSerialNumber = \"%s\"\n", volumeID);
+ MD5(volumeID, strlen(volumeID), md5sum);
+ vsn = mazamaEncode(md5sum, MD5_DIGEST_LENGTH, 0x20);
+
+ MD5(name, strlen(name), md5sum);
+ username = mazamaEncode(md5sum, MD5_DIGEST_LENGTH, 0x20);
+
+ MD5("MazamaRandomNumber", 18, md5sum);
+ mrn_key = mazamaEncode(md5sum, MD5_DIGEST_LENGTH, 0x40);
+
+ MD5("kindle.account.tokens", 21, md5sum);
+ kat_key = mazamaEncode(md5sum, MD5_DIGEST_LENGTH, 0x40);
+
+ SHA1_Init(&sha1_ctx);
+
+ mv = getKindleValue(mrn_key);
+ if (mv) {
+ DATA_BLOB DataIn;
+ DATA_BLOB DataOut;
+ DataIn.pbData = mazamaDecode(mv, (int*)&DataIn.cbData);
+ if (CryptUnprotectData(&DataIn, NULL, NULL, NULL, NULL, 1, &DataOut)) {
+ char *devId = (char*)malloc(DataOut.cbData + 4 * MD5_DIGEST_LENGTH + 1);
+ char *finalDevId;
+ unsigned char pidbuf[10];
+
+// fprintf(stderr, "CryptUnprotectData success\n");
+// fwrite(DataOut.pbData, DataOut.cbData, 1, stderr);
+// fprintf(stderr, "\n");
+
+ memcpy(devId, DataOut.pbData, DataOut.cbData);
+ strcpy(devId + DataOut.cbData, vsn);
+ strcat(devId + DataOut.cbData, username);
+
+// fprintf(stderr, "Computing sha1 over %d bytes\n", DataOut.cbData + 4 * MD5_DIGEST_LENGTH);
+ sha1(devId, DataOut.cbData + 4 * MD5_DIGEST_LENGTH, sha1sum);
+ finalDevId = mazamaEncode(sha1sum, SHA_DIGEST_LENGTH, 0x20);
+// fprintf(stderr, "finalDevId: %s\n", finalDevId);
+
+ SHA1_Update(&sha1_ctx, finalDevId, strlen(finalDevId));
+
+ pidbuf[8] = 0;
+ doPngDecode(finalDevId, 4, (unsigned char*)pidbuf);
+ fprintf(stderr, "Device PID: %s\n", pidbuf);
+
+ LocalFree(DataOut.pbData);
+ free(devId);
+ free(finalDevId);
+ }
+ else {
+ fprintf(stderr, "CryptUnprotectData failed, quitting\n");
+ free(kat_key);
+ free(mrn_key);
+ return NULL;
+ }
+
+ free(DataIn.pbData);
+ }
+ else {
+ fprintf(stderr, "Failed to find map node: %s\n", mrn_key);
+ }
+
+ mv = getKindleValue(kat_key);
+ if (mv) {
+ DATA_BLOB DataIn;
+ DATA_BLOB DataOut;
+ DataIn.pbData = mazamaDecode(mv, (int*)&DataIn.cbData);
+ if (CryptUnprotectData(&DataIn, NULL, NULL, NULL, NULL, 1, &DataOut)) {
+// fprintf(stderr, "CryptUnprotectData success\n");
+// fwrite(DataOut.pbData, DataOut.cbData, 1, stderr);
+// fprintf(stderr, "\n");
+
+ SHA1_Update(&sha1_ctx, DataOut.pbData, DataOut.cbData);
+
+ LocalFree(DataOut.pbData);
+ }
+ else {
+ fprintf(stderr, "CryptUnprotectData failed, quitting\n");
+ free(kat_key);
+ free(mrn_key);
+ return NULL;
+ }
+
+ free(DataIn.pbData);
+ }
+ else {
+ fprintf(stderr, "Failed to find map node: %s\n", kat_key);
+ }
+
+ SHA1_Update(&sha1_ctx, keys, klen);
+ SHA1_Update(&sha1_ctx, keysValue, kvlen);
+ SHA1_Final(sha1sum, &sha1_ctx);
+
+ pid = (char*)malloc(SHA_DIGEST_LENGTH * 2);
+ base64(sha1sum, SHA_DIGEST_LENGTH, pid);
+
+ pid[8] = 0;
+
+ free(mrn_key);
+ free(kat_key);
+ free(vsn);
+ free(username);
+
+ return pid;
+}
+
+static char *letters = "ABCDEFGHIJKLMNPQRSTUVWXYZ123456789";
+
+int verifyPidChecksum(char *pid) {
+ int l = strlen(letters);
+ unsigned int crc = ~do_crc(pid, 8);
+ unsigned char b;
+ crc = crc ^ (crc >> 16);
+ b = crc & 0xff;
+ if (pid[8] != letters[((b / l) ^ (b % l)) % l]) return 0;
+ crc >>= 8;
+ b = crc & 0xff;
+ if (pid[9] != letters[((b / l) ^ (b % l)) % l]) return 0;
+ return 1;
+}
--- /dev/null
+/*
+ Copyright 2010 BartSimpson aka skindle
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+#ifndef __SKINUTILS_H
+#define __SKINUTILS_H
+
+typedef struct _PidList {
+ unsigned int numPids;
+ char *pidList[1]; //extra pids to try from command line
+} PidList;
+
+typedef struct _MapList {
+ char *key;
+ char *value;
+ struct _MapList *next;
+} MapList;
+
+extern MapList *kindleMap;
+
+unsigned int base64(unsigned char *inbuf, unsigned int len, unsigned char *outbuf);
+
+unsigned short bswap_s(unsigned short s);
+unsigned int bswap_l(unsigned int s);
+
+char *translateKindleKey(char *key);
+MapList *findNode(MapList *map, char *key);
+MapList *findKindleNode(char *key);
+
+//don't free the result of getNodeValue;
+char *getNodeValue(MapList *map, char *key);
+char *getKindleValue(char *key);
+
+MapList *addMapNode(MapList *map, char *key, char *value);
+void dumpMap(MapList *m);
+
+void freeMap(MapList *m);
+
+int buildKindleMap(char *infoFile);
+void dumpKindleMap();
+
+//void png_crc_table_init(unsigned int *crc_table);
+unsigned int do_crc(unsigned char *input, unsigned int len);
+void doPngDecode(unsigned char *input, unsigned int len, unsigned char *output);
+
+char *mazamaEncode(unsigned char *input, unsigned int len, unsigned char choice);
+char *mazamaEncode32(unsigned char *input, unsigned int len);
+char *mazamaEncode64(unsigned char *input, unsigned int len);
+
+unsigned char *mazamaDecode(char *input, int *outlen);
+
+int verifyPidChecksum(char *pid);
+
+//If you prefer to use openssl uncomment the following
+//#include <openssl/sha.h>
+//#include <openssl/md5.h>
+
+#ifndef HEADER_MD5_H
+#include "md5.h"
+
+#define MD5_DIGEST_LENGTH 16
+
+#define MD5_CTX md5_state_t
+#define MD5_Init md5_init
+#define MD5_Update md5_append
+#define MD5_Final(x, y) md5_finish(y, x)
+#define MD5 md5
+
+void md5(unsigned char *in, int len, unsigned char *md);
+#endif
+
+#ifndef HEADER_SHA_H
+
+#include "sha1.h"
+
+#define SHA_DIGEST_LENGTH 20
+#define SHA_CTX sha1_state_s
+#define SHA1_Init sha1_init
+#define SHA1_Update sha1_update
+#define SHA1_Final(x, y) sha1_finish(y, x)
+#define SHA1 sha1
+
+void sha1(unsigned char *in, int len, unsigned char *md);
+#endif
+
+char *getBookPid(unsigned char *keys, unsigned int klen, unsigned char *keysValue, unsigned int kvlen);
+
+#endif
--- /dev/null
+/*
+ Copyright 2010 BartSimpson aka skindle
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "skinutils.h"
+#include "cbuf.h"
+#include "tpz.h"
+#include "zlib.h"
+
+//
+// Context initialisation for the Topaz Crypto
+//
+void topazCryptoInit(TpzCtx *ctx, unsigned char *key, int klen) {
+ int i = 0;
+ ctx->v[0] = 0x0CAFFE19E;
+
+ for (i = 0; i < klen; i++) {
+ ctx->v[1] = ctx->v[0];
+ ctx->v[0] = ((ctx->v[0] >> 2) * (ctx->v[0] >> 7)) ^
+ (key[i] * key[i] * 0x0F902007);
+ }
+}
+
+//
+// decrypt data with the context prepared by topazCryptoInit()
+//
+
+void topazCryptoDecrypt(TpzCtx *ctx, unsigned char *in, unsigned char *out, int len) {
+ unsigned int ctx1 = ctx->v[0];
+ unsigned int ctx2 = ctx->v[1];
+ int i;
+ for (i = 0; i < len; i++) {
+ unsigned char m = in[i] ^ (ctx1 >> 3) ^ (ctx2 << 3);
+ ctx2 = ctx1;
+ ctx1 = ((ctx1 >> 2) * (ctx1 >> 7)) ^ (m * m * 0x0F902007);
+ out[i] = m;
+ }
+}
+
+int bookReadEncodedNumber(FILE *f) {
+ int flag = 0;
+ int data = fgetc(f);
+ if (data == 0xFF) { //negative number flag
+ flag = 1;
+ data = fgetc(f);
+ }
+ if (data >= 0x80) {
+ int datax = data & 0x7F;
+ while (data >= 0x80) {
+ data = fgetc(f);
+ datax = (datax << 7) + (data & 0x7F);
+ }
+ data = datax;
+ }
+
+ if (flag) {
+ data = -data;
+ }
+ return data;
+}
+
+//
+// Encode a number in 7 bit format
+//
+
+int encodeNumber(int number, unsigned char *out) {
+ unsigned char *b = out;
+ unsigned char flag = 0;
+ int len;
+ int neg = number < 0;
+
+ if (neg) {
+ number = -number + 1;
+ }
+
+ do {
+ *b++ = (number & 0x7F) | flag;
+ number >>= 7;
+ flag = 0x80;
+ } while (number);
+
+ if (neg) {
+ *b++ = 0xFF;
+ }
+ len = b - out;
+ b--;
+ while (out < b) {
+ unsigned char v = *out;
+ *out++ = *b;
+ *b-- = v;
+ }
+ return len;
+}
+
+//
+// Get a length prefixed string from the file
+//
+
+char *bookReadString(FILE *f) {
+ int len = bookReadEncodedNumber(f);
+ char *s = (char*)malloc(len + 1);
+ s[len] = 0;
+ if (fread(s, 1, len, f) != len) {
+ fprintf(stderr, "String read failed at filepos %x\n", ftell(f));
+ free(s);
+ s = NULL;
+ }
+ return s;
+}
+
+//
+// Read and return the data of one header record at the current book file position [[offset,compressedLength,decompressedLength],...]
+//
+
+Record *bookReadHeaderRecordData(FILE *f) {
+ int nbValues = bookReadEncodedNumber(f);
+ Record *result = NULL;
+ Record *tail = NULL;
+ unsigned int i;
+ if (nbValues == -1) {
+ fprintf(stderr, "Parse Error : EOF encountered\n");
+ return NULL;
+ }
+ for (i = 0; i < nbValues; i++) {
+ Record *r = (Record*)malloc(sizeof(Record));
+ r->offset = bookReadEncodedNumber(f);
+ r->length = bookReadEncodedNumber(f);
+ r->compressed = bookReadEncodedNumber(f);
+ r->next = NULL;
+ if (result == NULL) {
+ result = r;
+ }
+ else {
+ tail->next = r;
+ }
+ tail = r;
+ }
+ return result;
+}
+
+//
+// Read and parse one header record at the current book file position and return the associated data [[offset,compressedLength,decompressedLength],...]
+//
+
+void freeRecordList(Record *r) {
+ Record *n;
+ while (r) {
+ n = r;
+ r = r->next;
+ free(n);
+ }
+}
+
+void freeHeaderList(HeaderRecord *r) {
+ HeaderRecord *n;
+ while (r) {
+ free(r->tag);
+ freeRecordList(r->rec);
+ n = r;
+ r = r->next;
+ free(n);
+ }
+}
+
+void freeTopazFile(TopazFile *t) {
+ freeHeaderList(t->hdrs);
+ freeMap(t->metadata);
+ free(t);
+}
+
+HeaderRecord *parseTopazHeaderRecord(FILE *f) {
+ char *tag;
+ Record *record;
+ if (fgetc(f) != 0x63) {
+ fprintf(stderr, "Parse Error : Invalid Header at 0x%x\n", ftell(f) - 1);
+ return NULL;
+ }
+
+ tag = bookReadString(f);
+ record = bookReadHeaderRecordData(f);
+ if (tag && record) {
+ HeaderRecord *r = (HeaderRecord*)malloc(sizeof(Record));
+ r->tag = tag;
+ r->rec = record;
+ r->next = NULL;
+ return r;
+ }
+ return NULL;
+}
+
+//
+// Parse the header of a Topaz file, get all the header records and the offset for the payload
+//
+
+HeaderRecord *addRecord(HeaderRecord *head, HeaderRecord *r) {
+ HeaderRecord *i;
+ for (i = head; i; i = i->next) {
+ if (i->next == NULL) {
+ i->next = r;
+ return head;
+ }
+ }
+ return r;
+}
+
+TopazFile *parseTopazHeader(FILE *f) {
+ unsigned int numRecs, i, magic;
+ TopazFile *tpz;
+ if (fread(&magic, sizeof(magic), 1, f) != 1) {
+ fprintf(stderr, "Failed to read file magic\n");
+ return NULL;
+ }
+
+ if (magic != 0x305a5054) {
+ fprintf(stderr, "Parse Error : Invalid Header, not a Topaz file");
+ return NULL;
+ }
+
+ numRecs = fgetc(f);
+
+ tpz = (TopazFile*)calloc(sizeof(TopazFile), 1);
+ tpz->f = f;
+
+ for (i = 0; i < numRecs; i++) {
+ HeaderRecord *result = parseTopazHeaderRecord(f);
+ if (result == NULL) {
+ break;
+ }
+ tpz->hdrs = addRecord(tpz->hdrs, result);
+ }
+
+ if (fgetc(f) != 0x64) {
+ fprintf(stderr, "Parse Error : Invalid Header end at pos 0x%x\n", ftell(f) - 1);
+ //empty list
+ freeTopazFile(tpz);
+ return NULL;
+ }
+
+ tpz->bodyOffset = ftell(f);
+ return tpz;
+}
+
+HeaderRecord *findHeader(TopazFile *tpz, char *tag) {
+ HeaderRecord *hr;
+ for (hr = tpz->hdrs; hr; hr = hr->next) {
+ if (strcmp(hr->tag, tag) == 0) {
+ break;
+ }
+ }
+ return hr;
+}
+
+void freePayload(Payload *p) {
+ free(p->blob);
+ free(p);
+}
+
+//
+//Get a record in the book payload, given its name and index. If necessary the record is decrypted. The record is not decompressed
+//
+Payload *getBookPayloadRecord(TopazFile *t, char *name, int index, int explode) {
+ int encrypted = 0;
+ int recordOffset, i, recordIndex;
+ Record *r;
+ int fileSize;
+ char *tag;
+ Payload *p;
+ off_t fileOffset;
+ HeaderRecord *hr = findHeader(t, name);
+
+ if (hr == NULL) {
+ fprintf(stderr, "Parse Error : Invalid Record, record %s not found\n", name);
+ return NULL;
+ }
+ r = hr->rec;
+ for (i = 0; r && i < index; i++) {
+ r = r->next;
+ }
+ if (r == NULL) {
+ fprintf(stderr, "Parse Error : Invalid Record, record %s:%d not found\n", name, index);
+ return NULL;
+ }
+ recordOffset = r->offset;
+
+ if (fseek(t->f, t->bodyOffset + recordOffset, SEEK_SET) == -1) {
+ fprintf(stderr, "Parse Error : Invalid Record offset, record %s:%d\n", name, index);
+ return NULL;
+ }
+
+ tag = bookReadString(t->f);
+ if (strcmp(tag, name)) {
+ fprintf(stderr, "Parse Error : Invalid Record offset, record %s:%d name doesn't match\n", name, index);
+ return NULL;
+ }
+ recordIndex = bookReadEncodedNumber(t->f);
+
+ if (recordIndex < 0) {
+ encrypted = 1;
+ recordIndex = -recordIndex - 1;
+ }
+
+ if (recordIndex != index) {
+ fprintf(stderr, "Parse Error : Invalid Record offset, record %s:%d index doesn't match\n", name, index);
+ return NULL;
+ }
+
+ fileSize = r->compressed ? r->compressed : r->length;
+ p = (Payload*)malloc(sizeof(Payload));
+ p->blob = (unsigned char*)malloc(fileSize);
+ p->len = fileSize;
+ p->name = name;
+ p->index = index;
+ fileOffset = ftell(t->f);
+ if (fread(p->blob, fileSize, 1, t->f) != 1) {
+ freePayload(p);
+ fprintf(stderr, "Parse Error : Failed payload read of record %s:%d offset 0x%x:0x%x\n", name, index, fileOffset, fileSize);
+ return NULL;
+ }
+
+ if (encrypted) {
+ TpzCtx ctx;
+ topazCryptoInit(&ctx, t->bookKey, 8);
+ topazCryptoDecrypt(&ctx, p->blob, p->blob, p->len);
+ }
+
+ if (r->compressed && explode) {
+ unsigned char *db = (unsigned char *)malloc(r->length);
+ uLongf dl = r->length;
+ switch (uncompress(db, &dl, p->blob, p->len)) {
+ case Z_OK:
+ free(p->blob);
+ p->blob = db;
+ p->len = dl;
+ break;
+ case Z_MEM_ERROR:
+ free(db);
+ fprintf(stderr, "out of memory\n");
+ break;
+ case Z_BUF_ERROR:
+ free(db);
+ fprintf(stderr, "output buffer wasn't large enough!\n");
+ break;
+ }
+ }
+
+ return p;
+}
+
+//
+// Parse the metadata record from the book payload and return a list of [key,values]
+//
+
+char *getMetadata(TopazFile *t, char *key) {
+ return getNodeValue(t->metadata, key);
+}
+
+void parseMetadata(TopazFile *t) {
+ char *tag;
+ int flags, nbRecords, i;
+ HeaderRecord *hr = findHeader(t, "metadata");
+
+ fseek(t->f, t->bodyOffset + hr->rec->offset, SEEK_SET);
+ tag = bookReadString(t->f);
+ if (strcmp(tag, "metadata")) {
+ //raise CMBDTCFatal("Parse Error : Record Names Don't Match")
+ return;
+ }
+
+ flags = fgetc(t->f);
+ nbRecords = bookReadEncodedNumber(t->f);
+
+ for (i = 0; i < nbRecords; i++) {
+ char *key = bookReadString(t->f);
+ char *value = bookReadString(t->f);
+ t->metadata = addMapNode(t->metadata, key, value);
+ }
+}
+
+//
+// Decrypt a payload record with the PID
+//
+
+void decryptRecord(unsigned char *in, int len, unsigned char *out, unsigned char *PID) {
+ TpzCtx ctx;
+ topazCryptoInit(&ctx, PID, 8); //is this length correct
+ topazCryptoDecrypt(&ctx, in, out, len);
+}
+
+//
+// Try to decrypt a dkey record (contains the book PID)
+//
+unsigned char *decryptDkeyRecord(unsigned char *data, int len, unsigned char *PID) {
+ decryptRecord(data, len, data, PID);
+ //fields = unpack("3sB8sB8s3s",record);
+
+ if (strncmp(data, "PID", 3) || strncmp(data + 21, "pid", 3)) {
+ fprintf(stderr, "Didn't find PID magic numbers in record\n");
+ return NULL;
+ }
+ else if (data[3] != 8 || data[12] != 8) {
+ fprintf(stderr, "Record didn't contain correct length fields\n");
+ return NULL;
+ }
+ else if (strncmp(data + 4, PID, 8)) {
+ fprintf(stderr, "Record didn't contain PID\n");
+ return NULL;
+ }
+ return data + 13;
+}
+
+//
+// Decrypt all the book's dkey records (contain the book PID)
+//
+
+unsigned char *decryptDkeyRecords(Payload *data, unsigned char *PID) {
+ int nbKeyRecords = data->blob[0]; //is this encoded number?
+ int i, idx;
+ idx = 1;
+ unsigned char *key = NULL;
+// records = []
+ for (i = 0; i < nbKeyRecords && idx < data->len; i++) {
+ int length = data->blob[idx++];
+ key = decryptDkeyRecord(data->blob + idx, length, PID);
+ if (key) break; //???
+ idx += length;
+ }
+ return key;
+}
+
+void bufEncodeInt(cbuf *b, int i) {
+ unsigned char encoded[16];
+ int len = encodeNumber(i, encoded);
+ b_add_buf(b, encoded, len);
+}
+
+void bufEncodeString(cbuf *b, char *s) {
+ bufEncodeInt(b, strlen(s));
+ b_add_str(b, s);
+}
+
+void writeTopazOutputFile(TopazFile *t, FILE *out, cbuf *tpzHeaders,
+ cbuf *tpzBody, int explode) {
+ int i, numHdrs = 0;
+ HeaderRecord *h;
+ b_add_str(tpzHeaders, "TPZ0");
+ for (h = t->hdrs; h; h = h->next) {
+ if (strcmp(h->tag, "dkey")) {
+ numHdrs++;
+ }
+ }
+ bufEncodeInt(tpzHeaders, numHdrs);
+
+ b_add_byte(tpzBody, 0x40);
+
+ for (h = t->hdrs; h; h = h->next) {
+ Record *r;
+ int nr = 0, idx = 0;
+ if (strcmp(h->tag, "dkey") == 0) continue;
+ b_add_byte(tpzHeaders, 0x63);
+ bufEncodeString(tpzHeaders, h->tag);
+ for (r = h->rec; r; r = r->next) nr++;
+ bufEncodeInt(tpzHeaders, nr);
+ for (r = h->rec; r; r = r->next) {
+ Payload *p;
+ int b, e;
+ bufEncodeInt(tpzHeaders, tpzBody->idx);
+ bufEncodeString(tpzBody, h->tag);
+ bufEncodeInt(tpzBody, idx);
+ b = tpzBody->idx;
+ p = getBookPayloadRecord(t, h->tag, idx++, explode);
+ b_add_buf(tpzBody, p->blob, p->len);
+ e = tpzBody->idx;
+
+ bufEncodeInt(tpzHeaders, r->length); //this is length of blob portion after decompression
+ if (explode) {
+ bufEncodeInt(tpzHeaders, 0); //this is the length in the file if compressed
+ }
+ else {
+ bufEncodeInt(tpzHeaders, r->compressed); //this is the length in the file if compressed
+ }
+
+ freePayload(p);
+ }
+ }
+
+ b_add_byte(tpzHeaders, 0x64);
+}
+
--- /dev/null
+/*
+ Copyright 2010 BartSimpson aka skindle
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+#ifndef __TPZ_H
+#define __TPZ_H
+
+#include <stdio.h>
+#include "skinutils.h"
+
+typedef struct _TpzCtx {
+ unsigned int v[2];
+} TpzCtx;
+
+void topazCryptoInit(TpzCtx *ctx, unsigned char *key, int klen);
+void topazCryptoDecrypt(TpzCtx *ctx, unsigned char *in, unsigned char *out, int len);
+int bookReadEncodedNumber(FILE *f);
+int encodeNumber(int number, unsigned char *out);
+char *bookReadString(FILE *f);
+
+typedef struct _Payload {
+ unsigned char *blob;
+ unsigned int len;
+ char *name;
+ int index;
+} Payload;
+
+typedef struct _Record {
+ int offset;
+ int length;
+ int compressed;
+ struct _Record *next;
+} Record;
+
+typedef struct _HeaderRecord {
+ char *tag;
+ Record *rec;
+ struct _HeaderRecord *next;
+} HeaderRecord;
+
+typedef struct _TopazFile {
+ FILE *f;
+ HeaderRecord *hdrs;
+ unsigned char *bookKey;
+ unsigned int bodyOffset;
+ MapList *metadata;
+ PidList *pids; //extra pids to try from command line
+} TopazFile;
+
+Record *bookReadHeaderRecordData(FILE *f);
+void freeRecordList(Record *r);
+void freeHeaderList(HeaderRecord *r);
+void freeTopazFile(TopazFile *t);
+HeaderRecord *parseTopazHeaderRecord(FILE *f);
+HeaderRecord *addRecord(HeaderRecord *head, HeaderRecord *r);
+TopazFile *parseTopazHeader(FILE *f);
+void freeTopazFile(TopazFile *tpz);
+HeaderRecord *findHeader(TopazFile *tpz, char *tag);
+void freePayload(Payload *p);
+Payload *getBookPayloadRecord(TopazFile *t, char *name, int index, int explode);
+char *getMetadata(TopazFile *t, char *key);
+void parseMetadata(TopazFile *t);
+void decryptRecord(unsigned char *in, int len, unsigned char *out, unsigned char *PID);
+unsigned char *decryptDkeyRecord(unsigned char *data, int len, unsigned char *PID);
+unsigned char *decryptDkeyRecords(Payload *data, unsigned char *PID);
+void writeTopazOutputFile(TopazFile *t, FILE *out, cbuf *tpzHeaders,
+ cbuf *tpzBody, int explode);
+
+
+#endif
--- /dev/null
+/* zconf.h -- configuration of the zlib compression library
+ * Copyright (C) 1995-2005 Jean-loup Gailly.
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/* @(#) $Id$ */
+
+#ifndef ZCONF_H
+#define ZCONF_H
+
+/*
+ * If you *really* need a unique prefix for all types and library functions,
+ * compile with -DZ_PREFIX. The "standard" zlib should be compiled without it.
+ */
+#ifdef Z_PREFIX
+# define deflateInit_ z_deflateInit_
+# define deflate z_deflate
+# define deflateEnd z_deflateEnd
+# define inflateInit_ z_inflateInit_
+# define inflate z_inflate
+# define inflateEnd z_inflateEnd
+# define deflateInit2_ z_deflateInit2_
+# define deflateSetDictionary z_deflateSetDictionary
+# define deflateCopy z_deflateCopy
+# define deflateReset z_deflateReset
+# define deflateParams z_deflateParams
+# define deflateBound z_deflateBound
+# define deflatePrime z_deflatePrime
+# define inflateInit2_ z_inflateInit2_
+# define inflateSetDictionary z_inflateSetDictionary
+# define inflateSync z_inflateSync
+# define inflateSyncPoint z_inflateSyncPoint
+# define inflateCopy z_inflateCopy
+# define inflateReset z_inflateReset
+# define inflateBack z_inflateBack
+# define inflateBackEnd z_inflateBackEnd
+# define compress z_compress
+# define compress2 z_compress2
+# define compressBound z_compressBound
+# define uncompress z_uncompress
+# define adler32 z_adler32
+# define crc32 z_crc32
+# define get_crc_table z_get_crc_table
+# define zError z_zError
+
+# define alloc_func z_alloc_func
+# define free_func z_free_func
+# define in_func z_in_func
+# define out_func z_out_func
+# define Byte z_Byte
+# define uInt z_uInt
+# define uLong z_uLong
+# define Bytef z_Bytef
+# define charf z_charf
+# define intf z_intf
+# define uIntf z_uIntf
+# define uLongf z_uLongf
+# define voidpf z_voidpf
+# define voidp z_voidp
+#endif
+
+#if defined(__MSDOS__) && !defined(MSDOS)
+# define MSDOS
+#endif
+#if (defined(OS_2) || defined(__OS2__)) && !defined(OS2)
+# define OS2
+#endif
+#if defined(_WINDOWS) && !defined(WINDOWS)
+# define WINDOWS
+#endif
+#if defined(_WIN32) || defined(_WIN32_WCE) || defined(__WIN32__)
+# ifndef WIN32
+# define WIN32
+# endif
+#endif
+#if (defined(MSDOS) || defined(OS2) || defined(WINDOWS)) && !defined(WIN32)
+# if !defined(__GNUC__) && !defined(__FLAT__) && !defined(__386__)
+# ifndef SYS16BIT
+# define SYS16BIT
+# endif
+# endif
+#endif
+
+/*
+ * Compile with -DMAXSEG_64K if the alloc function cannot allocate more
+ * than 64k bytes at a time (needed on systems with 16-bit int).
+ */
+#ifdef SYS16BIT
+# define MAXSEG_64K
+#endif
+#ifdef MSDOS
+# define UNALIGNED_OK
+#endif
+
+#ifdef __STDC_VERSION__
+# ifndef STDC
+# define STDC
+# endif
+# if __STDC_VERSION__ >= 199901L
+# ifndef STDC99
+# define STDC99
+# endif
+# endif
+#endif
+#if !defined(STDC) && (defined(__STDC__) || defined(__cplusplus))
+# define STDC
+#endif
+#if !defined(STDC) && (defined(__GNUC__) || defined(__BORLANDC__))
+# define STDC
+#endif
+#if !defined(STDC) && (defined(MSDOS) || defined(WINDOWS) || defined(WIN32))
+# define STDC
+#endif
+#if !defined(STDC) && (defined(OS2) || defined(__HOS_AIX__))
+# define STDC
+#endif
+
+#if defined(__OS400__) && !defined(STDC) /* iSeries (formerly AS/400). */
+# define STDC
+#endif
+
+#ifndef STDC
+# ifndef const /* cannot use !defined(STDC) && !defined(const) on Mac */
+# define const /* note: need a more gentle solution here */
+# endif
+#endif
+
+/* Some Mac compilers merge all .h files incorrectly: */
+#if defined(__MWERKS__)||defined(applec)||defined(THINK_C)||defined(__SC__)
+# define NO_DUMMY_DECL
+#endif
+
+/* Maximum value for memLevel in deflateInit2 */
+#ifndef MAX_MEM_LEVEL
+# ifdef MAXSEG_64K
+# define MAX_MEM_LEVEL 8
+# else
+# define MAX_MEM_LEVEL 9
+# endif
+#endif
+
+/* Maximum value for windowBits in deflateInit2 and inflateInit2.
+ * WARNING: reducing MAX_WBITS makes minigzip unable to extract .gz files
+ * created by gzip. (Files created by minigzip can still be extracted by
+ * gzip.)
+ */
+#ifndef MAX_WBITS
+# define MAX_WBITS 15 /* 32K LZ77 window */
+#endif
+
+/* The memory requirements for deflate are (in bytes):
+ (1 << (windowBits+2)) + (1 << (memLevel+9))
+ that is: 128K for windowBits=15 + 128K for memLevel = 8 (default values)
+ plus a few kilobytes for small objects. For example, if you want to reduce
+ the default memory requirements from 256K to 128K, compile with
+ make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7"
+ Of course this will generally degrade compression (there's no free lunch).
+
+ The memory requirements for inflate are (in bytes) 1 << windowBits
+ that is, 32K for windowBits=15 (default value) plus a few kilobytes
+ for small objects.
+*/
+
+ /* Type declarations */
+
+#ifndef OF /* function prototypes */
+# ifdef STDC
+# define OF(args) args
+# else
+# define OF(args) ()
+# endif
+#endif
+
+/* The following definitions for FAR are needed only for MSDOS mixed
+ * model programming (small or medium model with some far allocations).
+ * This was tested only with MSC; for other MSDOS compilers you may have
+ * to define NO_MEMCPY in zutil.h. If you don't need the mixed model,
+ * just define FAR to be empty.
+ */
+#ifdef SYS16BIT
+# if defined(M_I86SM) || defined(M_I86MM)
+ /* MSC small or medium model */
+# define SMALL_MEDIUM
+# ifdef _MSC_VER
+# define FAR _far
+# else
+# define FAR far
+# endif
+# endif
+# if (defined(__SMALL__) || defined(__MEDIUM__))
+ /* Turbo C small or medium model */
+# define SMALL_MEDIUM
+# ifdef __BORLANDC__
+# define FAR _far
+# else
+# define FAR far
+# endif
+# endif
+#endif
+
+#if defined(WINDOWS) || defined(WIN32)
+ /* If building or using zlib as a DLL, define ZLIB_DLL.
+ * This is not mandatory, but it offers a little performance increase.
+ */
+# ifdef ZLIB_DLL
+# if defined(WIN32) && (!defined(__BORLANDC__) || (__BORLANDC__ >= 0x500))
+# ifdef ZLIB_INTERNAL
+# define ZEXTERN extern __declspec(dllexport)
+# else
+# define ZEXTERN extern __declspec(dllimport)
+# endif
+# endif
+# endif /* ZLIB_DLL */
+ /* If building or using zlib with the WINAPI/WINAPIV calling convention,
+ * define ZLIB_WINAPI.
+ * Caution: the standard ZLIB1.DLL is NOT compiled using ZLIB_WINAPI.
+ */
+# ifdef ZLIB_WINAPI
+# ifdef FAR
+# undef FAR
+# endif
+# include <windows.h>
+ /* No need for _export, use ZLIB.DEF instead. */
+ /* For complete Windows compatibility, use WINAPI, not __stdcall. */
+# define ZEXPORT WINAPI
+# ifdef WIN32
+# define ZEXPORTVA WINAPIV
+# else
+# define ZEXPORTVA FAR CDECL
+# endif
+# endif
+#endif
+
+#if defined (__BEOS__)
+# ifdef ZLIB_DLL
+# ifdef ZLIB_INTERNAL
+# define ZEXPORT __declspec(dllexport)
+# define ZEXPORTVA __declspec(dllexport)
+# else
+# define ZEXPORT __declspec(dllimport)
+# define ZEXPORTVA __declspec(dllimport)
+# endif
+# endif
+#endif
+
+#ifndef ZEXTERN
+# define ZEXTERN extern
+#endif
+#ifndef ZEXPORT
+# define ZEXPORT
+#endif
+#ifndef ZEXPORTVA
+# define ZEXPORTVA
+#endif
+
+#ifndef FAR
+# define FAR
+#endif
+
+#if !defined(__MACTYPES__)
+typedef unsigned char Byte; /* 8 bits */
+#endif
+typedef unsigned int uInt; /* 16 bits or more */
+typedef unsigned long uLong; /* 32 bits or more */
+
+#ifdef SMALL_MEDIUM
+ /* Borland C/C++ and some old MSC versions ignore FAR inside typedef */
+# define Bytef Byte FAR
+#else
+ typedef Byte FAR Bytef;
+#endif
+typedef char FAR charf;
+typedef int FAR intf;
+typedef uInt FAR uIntf;
+typedef uLong FAR uLongf;
+
+#ifdef STDC
+ typedef void const *voidpc;
+ typedef void FAR *voidpf;
+ typedef void *voidp;
+#else
+ typedef Byte const *voidpc;
+ typedef Byte FAR *voidpf;
+ typedef Byte *voidp;
+#endif
+
+#if 0 /* HAVE_UNISTD_H -- this line is updated by ./configure */
+# include <sys/types.h> /* for off_t */
+# include <unistd.h> /* for SEEK_* and off_t */
+# ifdef VMS
+# include <unixio.h> /* for off_t */
+# endif
+# define z_off_t off_t
+#endif
+#ifndef SEEK_SET
+# define SEEK_SET 0 /* Seek from beginning of file. */
+# define SEEK_CUR 1 /* Seek from current position. */
+# define SEEK_END 2 /* Set file pointer to EOF plus "offset" */
+#endif
+#ifndef z_off_t
+# define z_off_t long
+#endif
+
+#if defined(__OS400__)
+# define NO_vsnprintf
+#endif
+
+#if defined(__MVS__)
+# define NO_vsnprintf
+# ifdef FAR
+# undef FAR
+# endif
+#endif
+
+/* MVS linker does not support external names larger than 8 bytes */
+#if defined(__MVS__)
+# pragma map(deflateInit_,"DEIN")
+# pragma map(deflateInit2_,"DEIN2")
+# pragma map(deflateEnd,"DEEND")
+# pragma map(deflateBound,"DEBND")
+# pragma map(inflateInit_,"ININ")
+# pragma map(inflateInit2_,"ININ2")
+# pragma map(inflateEnd,"INEND")
+# pragma map(inflateSync,"INSY")
+# pragma map(inflateSetDictionary,"INSEDI")
+# pragma map(compressBound,"CMBND")
+# pragma map(inflate_table,"INTABL")
+# pragma map(inflate_fast,"INFA")
+# pragma map(inflate_copyright,"INCOPY")
+#endif
+
+#endif /* ZCONF_H */
--- /dev/null
+/* zlib.h -- interface of the 'zlib' general purpose compression library
+ version 1.2.3, July 18th, 2005
+
+ Copyright (C) 1995-2005 Jean-loup Gailly and Mark Adler
+
+ This software is provided 'as-is', without any express or implied
+ warranty. In no event will the authors be held liable for any damages
+ arising from the use of this software.
+
+ Permission is granted to anyone to use this software for any purpose,
+ including commercial applications, and to alter it and redistribute it
+ freely, subject to the following restrictions:
+
+ 1. The origin of this software must not be misrepresented; you must not
+ claim that you wrote the original software. If you use this software
+ in a product, an acknowledgment in the product documentation would be
+ appreciated but is not required.
+ 2. Altered source versions must be plainly marked as such, and must not be
+ misrepresented as being the original software.
+ 3. This notice may not be removed or altered from any source distribution.
+
+ Jean-loup Gailly Mark Adler
+ jloup@gzip.org madler@alumni.caltech.edu
+
+
+ The data format used by the zlib library is described by RFCs (Request for
+ Comments) 1950 to 1952 in the files http://www.ietf.org/rfc/rfc1950.txt
+ (zlib format), rfc1951.txt (deflate format) and rfc1952.txt (gzip format).
+*/
+
+#ifndef ZLIB_H
+#define ZLIB_H
+
+#include "zconf.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define ZLIB_VERSION "1.2.3"
+#define ZLIB_VERNUM 0x1230
+
+/*
+ The 'zlib' compression library provides in-memory compression and
+ decompression functions, including integrity checks of the uncompressed
+ data. This version of the library supports only one compression method
+ (deflation) but other algorithms will be added later and will have the same
+ stream interface.
+
+ Compression can be done in a single step if the buffers are large
+ enough (for example if an input file is mmap'ed), or can be done by
+ repeated calls of the compression function. In the latter case, the
+ application must provide more input and/or consume the output
+ (providing more output space) before each call.
+
+ The compressed data format used by default by the in-memory functions is
+ the zlib format, which is a zlib wrapper documented in RFC 1950, wrapped
+ around a deflate stream, which is itself documented in RFC 1951.
+
+ The library also supports reading and writing files in gzip (.gz) format
+ with an interface similar to that of stdio using the functions that start
+ with "gz". The gzip format is different from the zlib format. gzip is a
+ gzip wrapper, documented in RFC 1952, wrapped around a deflate stream.
+
+ This library can optionally read and write gzip streams in memory as well.
+
+ The zlib format was designed to be compact and fast for use in memory
+ and on communications channels. The gzip format was designed for single-
+ file compression on file systems, has a larger header than zlib to maintain
+ directory information, and uses a different, slower check method than zlib.
+
+ The library does not install any signal handler. The decoder checks
+ the consistency of the compressed data, so the library should never
+ crash even in case of corrupted input.
+*/
+
+typedef voidpf (*alloc_func) OF((voidpf opaque, uInt items, uInt size));
+typedef void (*free_func) OF((voidpf opaque, voidpf address));
+
+struct internal_state;
+
+typedef struct z_stream_s {
+ Bytef *next_in; /* next input byte */
+ uInt avail_in; /* number of bytes available at next_in */
+ uLong total_in; /* total nb of input bytes read so far */
+
+ Bytef *next_out; /* next output byte should be put there */
+ uInt avail_out; /* remaining free space at next_out */
+ uLong total_out; /* total nb of bytes output so far */
+
+ char *msg; /* last error message, NULL if no error */
+ struct internal_state FAR *state; /* not visible by applications */
+
+ alloc_func zalloc; /* used to allocate the internal state */
+ free_func zfree; /* used to free the internal state */
+ voidpf opaque; /* private data object passed to zalloc and zfree */
+
+ int data_type; /* best guess about the data type: binary or text */
+ uLong adler; /* adler32 value of the uncompressed data */
+ uLong reserved; /* reserved for future use */
+} z_stream;
+
+typedef z_stream FAR *z_streamp;
+
+/*
+ gzip header information passed to and from zlib routines. See RFC 1952
+ for more details on the meanings of these fields.
+*/
+typedef struct gz_header_s {
+ int text; /* true if compressed data believed to be text */
+ uLong time; /* modification time */
+ int xflags; /* extra flags (not used when writing a gzip file) */
+ int os; /* operating system */
+ Bytef *extra; /* pointer to extra field or Z_NULL if none */
+ uInt extra_len; /* extra field length (valid if extra != Z_NULL) */
+ uInt extra_max; /* space at extra (only when reading header) */
+ Bytef *name; /* pointer to zero-terminated file name or Z_NULL */
+ uInt name_max; /* space at name (only when reading header) */
+ Bytef *comment; /* pointer to zero-terminated comment or Z_NULL */
+ uInt comm_max; /* space at comment (only when reading header) */
+ int hcrc; /* true if there was or will be a header crc */
+ int done; /* true when done reading gzip header (not used
+ when writing a gzip file) */
+} gz_header;
+
+typedef gz_header FAR *gz_headerp;
+
+/*
+ The application must update next_in and avail_in when avail_in has
+ dropped to zero. It must update next_out and avail_out when avail_out
+ has dropped to zero. The application must initialize zalloc, zfree and
+ opaque before calling the init function. All other fields are set by the
+ compression library and must not be updated by the application.
+
+ The opaque value provided by the application will be passed as the first
+ parameter for calls of zalloc and zfree. This can be useful for custom
+ memory management. The compression library attaches no meaning to the
+ opaque value.
+
+ zalloc must return Z_NULL if there is not enough memory for the object.
+ If zlib is used in a multi-threaded application, zalloc and zfree must be
+ thread safe.
+
+ On 16-bit systems, the functions zalloc and zfree must be able to allocate
+ exactly 65536 bytes, but will not be required to allocate more than this
+ if the symbol MAXSEG_64K is defined (see zconf.h). WARNING: On MSDOS,
+ pointers returned by zalloc for objects of exactly 65536 bytes *must*
+ have their offset normalized to zero. The default allocation function
+ provided by this library ensures this (see zutil.c). To reduce memory
+ requirements and avoid any allocation of 64K objects, at the expense of
+ compression ratio, compile the library with -DMAX_WBITS=14 (see zconf.h).
+
+ The fields total_in and total_out can be used for statistics or
+ progress reports. After compression, total_in holds the total size of
+ the uncompressed data and may be saved for use in the decompressor
+ (particularly if the decompressor wants to decompress everything in
+ a single step).
+*/
+
+ /* constants */
+
+#define Z_NO_FLUSH 0
+#define Z_PARTIAL_FLUSH 1 /* will be removed, use Z_SYNC_FLUSH instead */
+#define Z_SYNC_FLUSH 2
+#define Z_FULL_FLUSH 3
+#define Z_FINISH 4
+#define Z_BLOCK 5
+/* Allowed flush values; see deflate() and inflate() below for details */
+
+#define Z_OK 0
+#define Z_STREAM_END 1
+#define Z_NEED_DICT 2
+#define Z_ERRNO (-1)
+#define Z_STREAM_ERROR (-2)
+#define Z_DATA_ERROR (-3)
+#define Z_MEM_ERROR (-4)
+#define Z_BUF_ERROR (-5)
+#define Z_VERSION_ERROR (-6)
+/* Return codes for the compression/decompression functions. Negative
+ * values are errors, positive values are used for special but normal events.
+ */
+
+#define Z_NO_COMPRESSION 0
+#define Z_BEST_SPEED 1
+#define Z_BEST_COMPRESSION 9
+#define Z_DEFAULT_COMPRESSION (-1)
+/* compression levels */
+
+#define Z_FILTERED 1
+#define Z_HUFFMAN_ONLY 2
+#define Z_RLE 3
+#define Z_FIXED 4
+#define Z_DEFAULT_STRATEGY 0
+/* compression strategy; see deflateInit2() below for details */
+
+#define Z_BINARY 0
+#define Z_TEXT 1
+#define Z_ASCII Z_TEXT /* for compatibility with 1.2.2 and earlier */
+#define Z_UNKNOWN 2
+/* Possible values of the data_type field (though see inflate()) */
+
+#define Z_DEFLATED 8
+/* The deflate compression method (the only one supported in this version) */
+
+#define Z_NULL 0 /* for initializing zalloc, zfree, opaque */
+
+#define zlib_version zlibVersion()
+/* for compatibility with versions < 1.0.2 */
+
+ /* basic functions */
+
+ZEXTERN const char * ZEXPORT zlibVersion OF((void));
+/* The application can compare zlibVersion and ZLIB_VERSION for consistency.
+ If the first character differs, the library code actually used is
+ not compatible with the zlib.h header file used by the application.
+ This check is automatically made by deflateInit and inflateInit.
+ */
+
+/*
+ZEXTERN int ZEXPORT deflateInit OF((z_streamp strm, int level));
+
+ Initializes the internal stream state for compression. The fields
+ zalloc, zfree and opaque must be initialized before by the caller.
+ If zalloc and zfree are set to Z_NULL, deflateInit updates them to
+ use default allocation functions.
+
+ The compression level must be Z_DEFAULT_COMPRESSION, or between 0 and 9:
+ 1 gives best speed, 9 gives best compression, 0 gives no compression at
+ all (the input data is simply copied a block at a time).
+ Z_DEFAULT_COMPRESSION requests a default compromise between speed and
+ compression (currently equivalent to level 6).
+
+ deflateInit returns Z_OK if success, Z_MEM_ERROR if there was not
+ enough memory, Z_STREAM_ERROR if level is not a valid compression level,
+ Z_VERSION_ERROR if the zlib library version (zlib_version) is incompatible
+ with the version assumed by the caller (ZLIB_VERSION).
+ msg is set to null if there is no error message. deflateInit does not
+ perform any compression: this will be done by deflate().
+*/
+
+
+ZEXTERN int ZEXPORT deflate OF((z_streamp strm, int flush));
+/*
+ deflate compresses as much data as possible, and stops when the input
+ buffer becomes empty or the output buffer becomes full. It may introduce some
+ output latency (reading input without producing any output) except when
+ forced to flush.
+
+ The detailed semantics are as follows. deflate performs one or both of the
+ following actions:
+
+ - Compress more input starting at next_in and update next_in and avail_in
+ accordingly. If not all input can be processed (because there is not
+ enough room in the output buffer), next_in and avail_in are updated and
+ processing will resume at this point for the next call of deflate().
+
+ - Provide more output starting at next_out and update next_out and avail_out
+ accordingly. This action is forced if the parameter flush is non zero.
+ Forcing flush frequently degrades the compression ratio, so this parameter
+ should be set only when necessary (in interactive applications).
+ Some output may be provided even if flush is not set.
+
+ Before the call of deflate(), the application should ensure that at least
+ one of the actions is possible, by providing more input and/or consuming
+ more output, and updating avail_in or avail_out accordingly; avail_out
+ should never be zero before the call. The application can consume the
+ compressed output when it wants, for example when the output buffer is full
+ (avail_out == 0), or after each call of deflate(). If deflate returns Z_OK
+ and with zero avail_out, it must be called again after making room in the
+ output buffer because there might be more output pending.
+
+ Normally the parameter flush is set to Z_NO_FLUSH, which allows deflate to
+ decide how much data to accumualte before producing output, in order to
+ maximize compression.
+
+ If the parameter flush is set to Z_SYNC_FLUSH, all pending output is
+ flushed to the output buffer and the output is aligned on a byte boundary, so
+ that the decompressor can get all input data available so far. (In particular
+ avail_in is zero after the call if enough output space has been provided
+ before the call.) Flushing may degrade compression for some compression
+ algorithms and so it should be used only when necessary.
+
+ If flush is set to Z_FULL_FLUSH, all output is flushed as with
+ Z_SYNC_FLUSH, and the compression state is reset so that decompression can
+ restart from this point if previous compressed data has been damaged or if
+ random access is desired. Using Z_FULL_FLUSH too often can seriously degrade
+ compression.
+
+ If deflate returns with avail_out == 0, this function must be called again
+ with the same value of the flush parameter and more output space (updated
+ avail_out), until the flush is complete (deflate returns with non-zero
+ avail_out). In the case of a Z_FULL_FLUSH or Z_SYNC_FLUSH, make sure that
+ avail_out is greater than six to avoid repeated flush markers due to
+ avail_out == 0 on return.
+
+ If the parameter flush is set to Z_FINISH, pending input is processed,
+ pending output is flushed and deflate returns with Z_STREAM_END if there
+ was enough output space; if deflate returns with Z_OK, this function must be
+ called again with Z_FINISH and more output space (updated avail_out) but no
+ more input data, until it returns with Z_STREAM_END or an error. After
+ deflate has returned Z_STREAM_END, the only possible operations on the
+ stream are deflateReset or deflateEnd.
+
+ Z_FINISH can be used immediately after deflateInit if all the compression
+ is to be done in a single step. In this case, avail_out must be at least
+ the value returned by deflateBound (see below). If deflate does not return
+ Z_STREAM_END, then it must be called again as described above.
+
+ deflate() sets strm->adler to the adler32 checksum of all input read
+ so far (that is, total_in bytes).
+
+ deflate() may update strm->data_type if it can make a good guess about
+ the input data type (Z_BINARY or Z_TEXT). In doubt, the data is considered
+ binary. This field is only for information purposes and does not affect
+ the compression algorithm in any manner.
+
+ deflate() returns Z_OK if some progress has been made (more input
+ processed or more output produced), Z_STREAM_END if all input has been
+ consumed and all output has been produced (only when flush is set to
+ Z_FINISH), Z_STREAM_ERROR if the stream state was inconsistent (for example
+ if next_in or next_out was NULL), Z_BUF_ERROR if no progress is possible
+ (for example avail_in or avail_out was zero). Note that Z_BUF_ERROR is not
+ fatal, and deflate() can be called again with more input and more output
+ space to continue compressing.
+*/
+
+
+ZEXTERN int ZEXPORT deflateEnd OF((z_streamp strm));
+/*
+ All dynamically allocated data structures for this stream are freed.
+ This function discards any unprocessed input and does not flush any
+ pending output.
+
+ deflateEnd returns Z_OK if success, Z_STREAM_ERROR if the
+ stream state was inconsistent, Z_DATA_ERROR if the stream was freed
+ prematurely (some input or output was discarded). In the error case,
+ msg may be set but then points to a static string (which must not be
+ deallocated).
+*/
+
+
+/*
+ZEXTERN int ZEXPORT inflateInit OF((z_streamp strm));
+
+ Initializes the internal stream state for decompression. The fields
+ next_in, avail_in, zalloc, zfree and opaque must be initialized before by
+ the caller. If next_in is not Z_NULL and avail_in is large enough (the exact
+ value depends on the compression method), inflateInit determines the
+ compression method from the zlib header and allocates all data structures
+ accordingly; otherwise the allocation will be deferred to the first call of
+ inflate. If zalloc and zfree are set to Z_NULL, inflateInit updates them to
+ use default allocation functions.
+
+ inflateInit returns Z_OK if success, Z_MEM_ERROR if there was not enough
+ memory, Z_VERSION_ERROR if the zlib library version is incompatible with the
+ version assumed by the caller. msg is set to null if there is no error
+ message. inflateInit does not perform any decompression apart from reading
+ the zlib header if present: this will be done by inflate(). (So next_in and
+ avail_in may be modified, but next_out and avail_out are unchanged.)
+*/
+
+
+ZEXTERN int ZEXPORT inflate OF((z_streamp strm, int flush));
+/*
+ inflate decompresses as much data as possible, and stops when the input
+ buffer becomes empty or the output buffer becomes full. It may introduce
+ some output latency (reading input without producing any output) except when
+ forced to flush.
+
+ The detailed semantics are as follows. inflate performs one or both of the
+ following actions:
+
+ - Decompress more input starting at next_in and update next_in and avail_in
+ accordingly. If not all input can be processed (because there is not
+ enough room in the output buffer), next_in is updated and processing
+ will resume at this point for the next call of inflate().
+
+ - Provide more output starting at next_out and update next_out and avail_out
+ accordingly. inflate() provides as much output as possible, until there
+ is no more input data or no more space in the output buffer (see below
+ about the flush parameter).
+
+ Before the call of inflate(), the application should ensure that at least
+ one of the actions is possible, by providing more input and/or consuming
+ more output, and updating the next_* and avail_* values accordingly.
+ The application can consume the uncompressed output when it wants, for
+ example when the output buffer is full (avail_out == 0), or after each
+ call of inflate(). If inflate returns Z_OK and with zero avail_out, it
+ must be called again after making room in the output buffer because there
+ might be more output pending.
+
+ The flush parameter of inflate() can be Z_NO_FLUSH, Z_SYNC_FLUSH,
+ Z_FINISH, or Z_BLOCK. Z_SYNC_FLUSH requests that inflate() flush as much
+ output as possible to the output buffer. Z_BLOCK requests that inflate() stop
+ if and when it gets to the next deflate block boundary. When decoding the
+ zlib or gzip format, this will cause inflate() to return immediately after
+ the header and before the first block. When doing a raw inflate, inflate()
+ will go ahead and process the first block, and will return when it gets to
+ the end of that block, or when it runs out of data.
+
+ The Z_BLOCK option assists in appending to or combining deflate streams.
+ Also to assist in this, on return inflate() will set strm->data_type to the
+ number of unused bits in the last byte taken from strm->next_in, plus 64
+ if inflate() is currently decoding the last block in the deflate stream,
+ plus 128 if inflate() returned immediately after decoding an end-of-block
+ code or decoding the complete header up to just before the first byte of the
+ deflate stream. The end-of-block will not be indicated until all of the
+ uncompressed data from that block has been written to strm->next_out. The
+ number of unused bits may in general be greater than seven, except when
+ bit 7 of data_type is set, in which case the number of unused bits will be
+ less than eight.
+
+ inflate() should normally be called until it returns Z_STREAM_END or an
+ error. However if all decompression is to be performed in a single step
+ (a single call of inflate), the parameter flush should be set to
+ Z_FINISH. In this case all pending input is processed and all pending
+ output is flushed; avail_out must be large enough to hold all the
+ uncompressed data. (The size of the uncompressed data may have been saved
+ by the compressor for this purpose.) The next operation on this stream must
+ be inflateEnd to deallocate the decompression state. The use of Z_FINISH
+ is never required, but can be used to inform inflate that a faster approach
+ may be used for the single inflate() call.
+
+ In this implementation, inflate() always flushes as much output as
+ possible to the output buffer, and always uses the faster approach on the
+ first call. So the only effect of the flush parameter in this implementation
+ is on the return value of inflate(), as noted below, or when it returns early
+ because Z_BLOCK is used.
+
+ If a preset dictionary is needed after this call (see inflateSetDictionary
+ below), inflate sets strm->adler to the adler32 checksum of the dictionary
+ chosen by the compressor and returns Z_NEED_DICT; otherwise it sets
+ strm->adler to the adler32 checksum of all output produced so far (that is,
+ total_out bytes) and returns Z_OK, Z_STREAM_END or an error code as described
+ below. At the end of the stream, inflate() checks that its computed adler32
+ checksum is equal to that saved by the compressor and returns Z_STREAM_END
+ only if the checksum is correct.
+
+ inflate() will decompress and check either zlib-wrapped or gzip-wrapped
+ deflate data. The header type is detected automatically. Any information
+ contained in the gzip header is not retained, so applications that need that
+ information should instead use raw inflate, see inflateInit2() below, or
+ inflateBack() and perform their own processing of the gzip header and
+ trailer.
+
+ inflate() returns Z_OK if some progress has been made (more input processed
+ or more output produced), Z_STREAM_END if the end of the compressed data has
+ been reached and all uncompressed output has been produced, Z_NEED_DICT if a
+ preset dictionary is needed at this point, Z_DATA_ERROR if the input data was
+ corrupted (input stream not conforming to the zlib format or incorrect check
+ value), Z_STREAM_ERROR if the stream structure was inconsistent (for example
+ if next_in or next_out was NULL), Z_MEM_ERROR if there was not enough memory,
+ Z_BUF_ERROR if no progress is possible or if there was not enough room in the
+ output buffer when Z_FINISH is used. Note that Z_BUF_ERROR is not fatal, and
+ inflate() can be called again with more input and more output space to
+ continue decompressing. If Z_DATA_ERROR is returned, the application may then
+ call inflateSync() to look for a good compression block if a partial recovery
+ of the data is desired.
+*/
+
+
+ZEXTERN int ZEXPORT inflateEnd OF((z_streamp strm));
+/*
+ All dynamically allocated data structures for this stream are freed.
+ This function discards any unprocessed input and does not flush any
+ pending output.
+
+ inflateEnd returns Z_OK if success, Z_STREAM_ERROR if the stream state
+ was inconsistent. In the error case, msg may be set but then points to a
+ static string (which must not be deallocated).
+*/
+
+ /* Advanced functions */
+
+/*
+ The following functions are needed only in some special applications.
+*/
+
+/*
+ZEXTERN int ZEXPORT deflateInit2 OF((z_streamp strm,
+ int level,
+ int method,
+ int windowBits,
+ int memLevel,
+ int strategy));
+
+ This is another version of deflateInit with more compression options. The
+ fields next_in, zalloc, zfree and opaque must be initialized before by
+ the caller.
+
+ The method parameter is the compression method. It must be Z_DEFLATED in
+ this version of the library.
+
+ The windowBits parameter is the base two logarithm of the window size
+ (the size of the history buffer). It should be in the range 8..15 for this
+ version of the library. Larger values of this parameter result in better
+ compression at the expense of memory usage. The default value is 15 if
+ deflateInit is used instead.
+
+ windowBits can also be -8..-15 for raw deflate. In this case, -windowBits
+ determines the window size. deflate() will then generate raw deflate data
+ with no zlib header or trailer, and will not compute an adler32 check value.
+
+ windowBits can also be greater than 15 for optional gzip encoding. Add
+ 16 to windowBits to write a simple gzip header and trailer around the
+ compressed data instead of a zlib wrapper. The gzip header will have no
+ file name, no extra data, no comment, no modification time (set to zero),
+ no header crc, and the operating system will be set to 255 (unknown). If a
+ gzip stream is being written, strm->adler is a crc32 instead of an adler32.
+
+ The memLevel parameter specifies how much memory should be allocated
+ for the internal compression state. memLevel=1 uses minimum memory but
+ is slow and reduces compression ratio; memLevel=9 uses maximum memory
+ for optimal speed. The default value is 8. See zconf.h for total memory
+ usage as a function of windowBits and memLevel.
+
+ The strategy parameter is used to tune the compression algorithm. Use the
+ value Z_DEFAULT_STRATEGY for normal data, Z_FILTERED for data produced by a
+ filter (or predictor), Z_HUFFMAN_ONLY to force Huffman encoding only (no
+ string match), or Z_RLE to limit match distances to one (run-length
+ encoding). Filtered data consists mostly of small values with a somewhat
+ random distribution. In this case, the compression algorithm is tuned to
+ compress them better. The effect of Z_FILTERED is to force more Huffman
+ coding and less string matching; it is somewhat intermediate between
+ Z_DEFAULT and Z_HUFFMAN_ONLY. Z_RLE is designed to be almost as fast as
+ Z_HUFFMAN_ONLY, but give better compression for PNG image data. The strategy
+ parameter only affects the compression ratio but not the correctness of the
+ compressed output even if it is not set appropriately. Z_FIXED prevents the
+ use of dynamic Huffman codes, allowing for a simpler decoder for special
+ applications.
+
+ deflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
+ memory, Z_STREAM_ERROR if a parameter is invalid (such as an invalid
+ method). msg is set to null if there is no error message. deflateInit2 does
+ not perform any compression: this will be done by deflate().
+*/
+
+ZEXTERN int ZEXPORT deflateSetDictionary OF((z_streamp strm,
+ const Bytef *dictionary,
+ uInt dictLength));
+/*
+ Initializes the compression dictionary from the given byte sequence
+ without producing any compressed output. This function must be called
+ immediately after deflateInit, deflateInit2 or deflateReset, before any
+ call of deflate. The compressor and decompressor must use exactly the same
+ dictionary (see inflateSetDictionary).
+
+ The dictionary should consist of strings (byte sequences) that are likely
+ to be encountered later in the data to be compressed, with the most commonly
+ used strings preferably put towards the end of the dictionary. Using a
+ dictionary is most useful when the data to be compressed is short and can be
+ predicted with good accuracy; the data can then be compressed better than
+ with the default empty dictionary.
+
+ Depending on the size of the compression data structures selected by
+ deflateInit or deflateInit2, a part of the dictionary may in effect be
+ discarded, for example if the dictionary is larger than the window size in
+ deflate or deflate2. Thus the strings most likely to be useful should be
+ put at the end of the dictionary, not at the front. In addition, the
+ current implementation of deflate will use at most the window size minus
+ 262 bytes of the provided dictionary.
+
+ Upon return of this function, strm->adler is set to the adler32 value
+ of the dictionary; the decompressor may later use this value to determine
+ which dictionary has been used by the compressor. (The adler32 value
+ applies to the whole dictionary even if only a subset of the dictionary is
+ actually used by the compressor.) If a raw deflate was requested, then the
+ adler32 value is not computed and strm->adler is not set.
+
+ deflateSetDictionary returns Z_OK if success, or Z_STREAM_ERROR if a
+ parameter is invalid (such as NULL dictionary) or the stream state is
+ inconsistent (for example if deflate has already been called for this stream
+ or if the compression method is bsort). deflateSetDictionary does not
+ perform any compression: this will be done by deflate().
+*/
+
+ZEXTERN int ZEXPORT deflateCopy OF((z_streamp dest,
+ z_streamp source));
+/*
+ Sets the destination stream as a complete copy of the source stream.
+
+ This function can be useful when several compression strategies will be
+ tried, for example when there are several ways of pre-processing the input
+ data with a filter. The streams that will be discarded should then be freed
+ by calling deflateEnd. Note that deflateCopy duplicates the internal
+ compression state which can be quite large, so this strategy is slow and
+ can consume lots of memory.
+
+ deflateCopy returns Z_OK if success, Z_MEM_ERROR if there was not
+ enough memory, Z_STREAM_ERROR if the source stream state was inconsistent
+ (such as zalloc being NULL). msg is left unchanged in both source and
+ destination.
+*/
+
+ZEXTERN int ZEXPORT deflateReset OF((z_streamp strm));
+/*
+ This function is equivalent to deflateEnd followed by deflateInit,
+ but does not free and reallocate all the internal compression state.
+ The stream will keep the same compression level and any other attributes
+ that may have been set by deflateInit2.
+
+ deflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source
+ stream state was inconsistent (such as zalloc or state being NULL).
+*/
+
+ZEXTERN int ZEXPORT deflateParams OF((z_streamp strm,
+ int level,
+ int strategy));
+/*
+ Dynamically update the compression level and compression strategy. The
+ interpretation of level and strategy is as in deflateInit2. This can be
+ used to switch between compression and straight copy of the input data, or
+ to switch to a different kind of input data requiring a different
+ strategy. If the compression level is changed, the input available so far
+ is compressed with the old level (and may be flushed); the new level will
+ take effect only at the next call of deflate().
+
+ Before the call of deflateParams, the stream state must be set as for
+ a call of deflate(), since the currently available input may have to
+ be compressed and flushed. In particular, strm->avail_out must be non-zero.
+
+ deflateParams returns Z_OK if success, Z_STREAM_ERROR if the source
+ stream state was inconsistent or if a parameter was invalid, Z_BUF_ERROR
+ if strm->avail_out was zero.
+*/
+
+ZEXTERN int ZEXPORT deflateTune OF((z_streamp strm,
+ int good_length,
+ int max_lazy,
+ int nice_length,
+ int max_chain));
+/*
+ Fine tune deflate's internal compression parameters. This should only be
+ used by someone who understands the algorithm used by zlib's deflate for
+ searching for the best matching string, and even then only by the most
+ fanatic optimizer trying to squeeze out the last compressed bit for their
+ specific input data. Read the deflate.c source code for the meaning of the
+ max_lazy, good_length, nice_length, and max_chain parameters.
+
+ deflateTune() can be called after deflateInit() or deflateInit2(), and
+ returns Z_OK on success, or Z_STREAM_ERROR for an invalid deflate stream.
+ */
+
+ZEXTERN uLong ZEXPORT deflateBound OF((z_streamp strm,
+ uLong sourceLen));
+/*
+ deflateBound() returns an upper bound on the compressed size after
+ deflation of sourceLen bytes. It must be called after deflateInit()
+ or deflateInit2(). This would be used to allocate an output buffer
+ for deflation in a single pass, and so would be called before deflate().
+*/
+
+ZEXTERN int ZEXPORT deflatePrime OF((z_streamp strm,
+ int bits,
+ int value));
+/*
+ deflatePrime() inserts bits in the deflate output stream. The intent
+ is that this function is used to start off the deflate output with the
+ bits leftover from a previous deflate stream when appending to it. As such,
+ this function can only be used for raw deflate, and must be used before the
+ first deflate() call after a deflateInit2() or deflateReset(). bits must be
+ less than or equal to 16, and that many of the least significant bits of
+ value will be inserted in the output.
+
+ deflatePrime returns Z_OK if success, or Z_STREAM_ERROR if the source
+ stream state was inconsistent.
+*/
+
+ZEXTERN int ZEXPORT deflateSetHeader OF((z_streamp strm,
+ gz_headerp head));
+/*
+ deflateSetHeader() provides gzip header information for when a gzip
+ stream is requested by deflateInit2(). deflateSetHeader() may be called
+ after deflateInit2() or deflateReset() and before the first call of
+ deflate(). The text, time, os, extra field, name, and comment information
+ in the provided gz_header structure are written to the gzip header (xflag is
+ ignored -- the extra flags are set according to the compression level). The
+ caller must assure that, if not Z_NULL, name and comment are terminated with
+ a zero byte, and that if extra is not Z_NULL, that extra_len bytes are
+ available there. If hcrc is true, a gzip header crc is included. Note that
+ the current versions of the command-line version of gzip (up through version
+ 1.3.x) do not support header crc's, and will report that it is a "multi-part
+ gzip file" and give up.
+
+ If deflateSetHeader is not used, the default gzip header has text false,
+ the time set to zero, and os set to 255, with no extra, name, or comment
+ fields. The gzip header is returned to the default state by deflateReset().
+
+ deflateSetHeader returns Z_OK if success, or Z_STREAM_ERROR if the source
+ stream state was inconsistent.
+*/
+
+/*
+ZEXTERN int ZEXPORT inflateInit2 OF((z_streamp strm,
+ int windowBits));
+
+ This is another version of inflateInit with an extra parameter. The
+ fields next_in, avail_in, zalloc, zfree and opaque must be initialized
+ before by the caller.
+
+ The windowBits parameter is the base two logarithm of the maximum window
+ size (the size of the history buffer). It should be in the range 8..15 for
+ this version of the library. The default value is 15 if inflateInit is used
+ instead. windowBits must be greater than or equal to the windowBits value
+ provided to deflateInit2() while compressing, or it must be equal to 15 if
+ deflateInit2() was not used. If a compressed stream with a larger window
+ size is given as input, inflate() will return with the error code
+ Z_DATA_ERROR instead of trying to allocate a larger window.
+
+ windowBits can also be -8..-15 for raw inflate. In this case, -windowBits
+ determines the window size. inflate() will then process raw deflate data,
+ not looking for a zlib or gzip header, not generating a check value, and not
+ looking for any check values for comparison at the end of the stream. This
+ is for use with other formats that use the deflate compressed data format
+ such as zip. Those formats provide their own check values. If a custom
+ format is developed using the raw deflate format for compressed data, it is
+ recommended that a check value such as an adler32 or a crc32 be applied to
+ the uncompressed data as is done in the zlib, gzip, and zip formats. For
+ most applications, the zlib format should be used as is. Note that comments
+ above on the use in deflateInit2() applies to the magnitude of windowBits.
+
+ windowBits can also be greater than 15 for optional gzip decoding. Add
+ 32 to windowBits to enable zlib and gzip decoding with automatic header
+ detection, or add 16 to decode only the gzip format (the zlib format will
+ return a Z_DATA_ERROR). If a gzip stream is being decoded, strm->adler is
+ a crc32 instead of an adler32.
+
+ inflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
+ memory, Z_STREAM_ERROR if a parameter is invalid (such as a null strm). msg
+ is set to null if there is no error message. inflateInit2 does not perform
+ any decompression apart from reading the zlib header if present: this will
+ be done by inflate(). (So next_in and avail_in may be modified, but next_out
+ and avail_out are unchanged.)
+*/
+
+ZEXTERN int ZEXPORT inflateSetDictionary OF((z_streamp strm,
+ const Bytef *dictionary,
+ uInt dictLength));
+/*
+ Initializes the decompression dictionary from the given uncompressed byte
+ sequence. This function must be called immediately after a call of inflate,
+ if that call returned Z_NEED_DICT. The dictionary chosen by the compressor
+ can be determined from the adler32 value returned by that call of inflate.
+ The compressor and decompressor must use exactly the same dictionary (see
+ deflateSetDictionary). For raw inflate, this function can be called
+ immediately after inflateInit2() or inflateReset() and before any call of
+ inflate() to set the dictionary. The application must insure that the
+ dictionary that was used for compression is provided.
+
+ inflateSetDictionary returns Z_OK if success, Z_STREAM_ERROR if a
+ parameter is invalid (such as NULL dictionary) or the stream state is
+ inconsistent, Z_DATA_ERROR if the given dictionary doesn't match the
+ expected one (incorrect adler32 value). inflateSetDictionary does not
+ perform any decompression: this will be done by subsequent calls of
+ inflate().
+*/
+
+ZEXTERN int ZEXPORT inflateSync OF((z_streamp strm));
+/*
+ Skips invalid compressed data until a full flush point (see above the
+ description of deflate with Z_FULL_FLUSH) can be found, or until all
+ available input is skipped. No output is provided.
+
+ inflateSync returns Z_OK if a full flush point has been found, Z_BUF_ERROR
+ if no more input was provided, Z_DATA_ERROR if no flush point has been found,
+ or Z_STREAM_ERROR if the stream structure was inconsistent. In the success
+ case, the application may save the current current value of total_in which
+ indicates where valid compressed data was found. In the error case, the
+ application may repeatedly call inflateSync, providing more input each time,
+ until success or end of the input data.
+*/
+
+ZEXTERN int ZEXPORT inflateCopy OF((z_streamp dest,
+ z_streamp source));
+/*
+ Sets the destination stream as a complete copy of the source stream.
+
+ This function can be useful when randomly accessing a large stream. The
+ first pass through the stream can periodically record the inflate state,
+ allowing restarting inflate at those points when randomly accessing the
+ stream.
+
+ inflateCopy returns Z_OK if success, Z_MEM_ERROR if there was not
+ enough memory, Z_STREAM_ERROR if the source stream state was inconsistent
+ (such as zalloc being NULL). msg is left unchanged in both source and
+ destination.
+*/
+
+ZEXTERN int ZEXPORT inflateReset OF((z_streamp strm));
+/*
+ This function is equivalent to inflateEnd followed by inflateInit,
+ but does not free and reallocate all the internal decompression state.
+ The stream will keep attributes that may have been set by inflateInit2.
+
+ inflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source
+ stream state was inconsistent (such as zalloc or state being NULL).
+*/
+
+ZEXTERN int ZEXPORT inflatePrime OF((z_streamp strm,
+ int bits,
+ int value));
+/*
+ This function inserts bits in the inflate input stream. The intent is
+ that this function is used to start inflating at a bit position in the
+ middle of a byte. The provided bits will be used before any bytes are used
+ from next_in. This function should only be used with raw inflate, and
+ should be used before the first inflate() call after inflateInit2() or
+ inflateReset(). bits must be less than or equal to 16, and that many of the
+ least significant bits of value will be inserted in the input.
+
+ inflatePrime returns Z_OK if success, or Z_STREAM_ERROR if the source
+ stream state was inconsistent.
+*/
+
+ZEXTERN int ZEXPORT inflateGetHeader OF((z_streamp strm,
+ gz_headerp head));
+/*
+ inflateGetHeader() requests that gzip header information be stored in the
+ provided gz_header structure. inflateGetHeader() may be called after
+ inflateInit2() or inflateReset(), and before the first call of inflate().
+ As inflate() processes the gzip stream, head->done is zero until the header
+ is completed, at which time head->done is set to one. If a zlib stream is
+ being decoded, then head->done is set to -1 to indicate that there will be
+ no gzip header information forthcoming. Note that Z_BLOCK can be used to
+ force inflate() to return immediately after header processing is complete
+ and before any actual data is decompressed.
+
+ The text, time, xflags, and os fields are filled in with the gzip header
+ contents. hcrc is set to true if there is a header CRC. (The header CRC
+ was valid if done is set to one.) If extra is not Z_NULL, then extra_max
+ contains the maximum number of bytes to write to extra. Once done is true,
+ extra_len contains the actual extra field length, and extra contains the
+ extra field, or that field truncated if extra_max is less than extra_len.
+ If name is not Z_NULL, then up to name_max characters are written there,
+ terminated with a zero unless the length is greater than name_max. If
+ comment is not Z_NULL, then up to comm_max characters are written there,
+ terminated with a zero unless the length is greater than comm_max. When
+ any of extra, name, or comment are not Z_NULL and the respective field is
+ not present in the header, then that field is set to Z_NULL to signal its
+ absence. This allows the use of deflateSetHeader() with the returned
+ structure to duplicate the header. However if those fields are set to
+ allocated memory, then the application will need to save those pointers
+ elsewhere so that they can be eventually freed.
+
+ If inflateGetHeader is not used, then the header information is simply
+ discarded. The header is always checked for validity, including the header
+ CRC if present. inflateReset() will reset the process to discard the header
+ information. The application would need to call inflateGetHeader() again to
+ retrieve the header from the next gzip stream.
+
+ inflateGetHeader returns Z_OK if success, or Z_STREAM_ERROR if the source
+ stream state was inconsistent.
+*/
+
+/*
+ZEXTERN int ZEXPORT inflateBackInit OF((z_streamp strm, int windowBits,
+ unsigned char FAR *window));
+
+ Initialize the internal stream state for decompression using inflateBack()
+ calls. The fields zalloc, zfree and opaque in strm must be initialized
+ before the call. If zalloc and zfree are Z_NULL, then the default library-
+ derived memory allocation routines are used. windowBits is the base two
+ logarithm of the window size, in the range 8..15. window is a caller
+ supplied buffer of that size. Except for special applications where it is
+ assured that deflate was used with small window sizes, windowBits must be 15
+ and a 32K byte window must be supplied to be able to decompress general
+ deflate streams.
+
+ See inflateBack() for the usage of these routines.
+
+ inflateBackInit will return Z_OK on success, Z_STREAM_ERROR if any of
+ the paramaters are invalid, Z_MEM_ERROR if the internal state could not
+ be allocated, or Z_VERSION_ERROR if the version of the library does not
+ match the version of the header file.
+*/
+
+typedef unsigned (*in_func) OF((void FAR *, unsigned char FAR * FAR *));
+typedef int (*out_func) OF((void FAR *, unsigned char FAR *, unsigned));
+
+ZEXTERN int ZEXPORT inflateBack OF((z_streamp strm,
+ in_func in, void FAR *in_desc,
+ out_func out, void FAR *out_desc));
+/*
+ inflateBack() does a raw inflate with a single call using a call-back
+ interface for input and output. This is more efficient than inflate() for
+ file i/o applications in that it avoids copying between the output and the
+ sliding window by simply making the window itself the output buffer. This
+ function trusts the application to not change the output buffer passed by
+ the output function, at least until inflateBack() returns.
+
+ inflateBackInit() must be called first to allocate the internal state
+ and to initialize the state with the user-provided window buffer.
+ inflateBack() may then be used multiple times to inflate a complete, raw
+ deflate stream with each call. inflateBackEnd() is then called to free
+ the allocated state.
+
+ A raw deflate stream is one with no zlib or gzip header or trailer.
+ This routine would normally be used in a utility that reads zip or gzip
+ files and writes out uncompressed files. The utility would decode the
+ header and process the trailer on its own, hence this routine expects
+ only the raw deflate stream to decompress. This is different from the
+ normal behavior of inflate(), which expects either a zlib or gzip header and
+ trailer around the deflate stream.
+
+ inflateBack() uses two subroutines supplied by the caller that are then
+ called by inflateBack() for input and output. inflateBack() calls those
+ routines until it reads a complete deflate stream and writes out all of the
+ uncompressed data, or until it encounters an error. The function's
+ parameters and return types are defined above in the in_func and out_func
+ typedefs. inflateBack() will call in(in_desc, &buf) which should return the
+ number of bytes of provided input, and a pointer to that input in buf. If
+ there is no input available, in() must return zero--buf is ignored in that
+ case--and inflateBack() will return a buffer error. inflateBack() will call
+ out(out_desc, buf, len) to write the uncompressed data buf[0..len-1]. out()
+ should return zero on success, or non-zero on failure. If out() returns
+ non-zero, inflateBack() will return with an error. Neither in() nor out()
+ are permitted to change the contents of the window provided to
+ inflateBackInit(), which is also the buffer that out() uses to write from.
+ The length written by out() will be at most the window size. Any non-zero
+ amount of input may be provided by in().
+
+ For convenience, inflateBack() can be provided input on the first call by
+ setting strm->next_in and strm->avail_in. If that input is exhausted, then
+ in() will be called. Therefore strm->next_in must be initialized before
+ calling inflateBack(). If strm->next_in is Z_NULL, then in() will be called
+ immediately for input. If strm->next_in is not Z_NULL, then strm->avail_in
+ must also be initialized, and then if strm->avail_in is not zero, input will
+ initially be taken from strm->next_in[0 .. strm->avail_in - 1].
+
+ The in_desc and out_desc parameters of inflateBack() is passed as the
+ first parameter of in() and out() respectively when they are called. These
+ descriptors can be optionally used to pass any information that the caller-
+ supplied in() and out() functions need to do their job.
+
+ On return, inflateBack() will set strm->next_in and strm->avail_in to
+ pass back any unused input that was provided by the last in() call. The
+ return values of inflateBack() can be Z_STREAM_END on success, Z_BUF_ERROR
+ if in() or out() returned an error, Z_DATA_ERROR if there was a format
+ error in the deflate stream (in which case strm->msg is set to indicate the
+ nature of the error), or Z_STREAM_ERROR if the stream was not properly
+ initialized. In the case of Z_BUF_ERROR, an input or output error can be
+ distinguished using strm->next_in which will be Z_NULL only if in() returned
+ an error. If strm->next is not Z_NULL, then the Z_BUF_ERROR was due to
+ out() returning non-zero. (in() will always be called before out(), so
+ strm->next_in is assured to be defined if out() returns non-zero.) Note
+ that inflateBack() cannot return Z_OK.
+*/
+
+ZEXTERN int ZEXPORT inflateBackEnd OF((z_streamp strm));
+/*
+ All memory allocated by inflateBackInit() is freed.
+
+ inflateBackEnd() returns Z_OK on success, or Z_STREAM_ERROR if the stream
+ state was inconsistent.
+*/
+
+ZEXTERN uLong ZEXPORT zlibCompileFlags OF((void));
+/* Return flags indicating compile-time options.
+
+ Type sizes, two bits each, 00 = 16 bits, 01 = 32, 10 = 64, 11 = other:
+ 1.0: size of uInt
+ 3.2: size of uLong
+ 5.4: size of voidpf (pointer)
+ 7.6: size of z_off_t
+
+ Compiler, assembler, and debug options:
+ 8: DEBUG
+ 9: ASMV or ASMINF -- use ASM code
+ 10: ZLIB_WINAPI -- exported functions use the WINAPI calling convention
+ 11: 0 (reserved)
+
+ One-time table building (smaller code, but not thread-safe if true):
+ 12: BUILDFIXED -- build static block decoding tables when needed
+ 13: DYNAMIC_CRC_TABLE -- build CRC calculation tables when needed
+ 14,15: 0 (reserved)
+
+ Library content (indicates missing functionality):
+ 16: NO_GZCOMPRESS -- gz* functions cannot compress (to avoid linking
+ deflate code when not needed)
+ 17: NO_GZIP -- deflate can't write gzip streams, and inflate can't detect
+ and decode gzip streams (to avoid linking crc code)
+ 18-19: 0 (reserved)
+
+ Operation variations (changes in library functionality):
+ 20: PKZIP_BUG_WORKAROUND -- slightly more permissive inflate
+ 21: FASTEST -- deflate algorithm with only one, lowest compression level
+ 22,23: 0 (reserved)
+
+ The sprintf variant used by gzprintf (zero is best):
+ 24: 0 = vs*, 1 = s* -- 1 means limited to 20 arguments after the format
+ 25: 0 = *nprintf, 1 = *printf -- 1 means gzprintf() not secure!
+ 26: 0 = returns value, 1 = void -- 1 means inferred string length returned
+
+ Remainder:
+ 27-31: 0 (reserved)
+ */
+
+
+ /* utility functions */
+
+/*
+ The following utility functions are implemented on top of the
+ basic stream-oriented functions. To simplify the interface, some
+ default options are assumed (compression level and memory usage,
+ standard memory allocation functions). The source code of these
+ utility functions can easily be modified if you need special options.
+*/
+
+ZEXTERN int ZEXPORT compress OF((Bytef *dest, uLongf *destLen,
+ const Bytef *source, uLong sourceLen));
+/*
+ Compresses the source buffer into the destination buffer. sourceLen is
+ the byte length of the source buffer. Upon entry, destLen is the total
+ size of the destination buffer, which must be at least the value returned
+ by compressBound(sourceLen). Upon exit, destLen is the actual size of the
+ compressed buffer.
+ This function can be used to compress a whole file at once if the
+ input file is mmap'ed.
+ compress returns Z_OK if success, Z_MEM_ERROR if there was not
+ enough memory, Z_BUF_ERROR if there was not enough room in the output
+ buffer.
+*/
+
+ZEXTERN int ZEXPORT compress2 OF((Bytef *dest, uLongf *destLen,
+ const Bytef *source, uLong sourceLen,
+ int level));
+/*
+ Compresses the source buffer into the destination buffer. The level
+ parameter has the same meaning as in deflateInit. sourceLen is the byte
+ length of the source buffer. Upon entry, destLen is the total size of the
+ destination buffer, which must be at least the value returned by
+ compressBound(sourceLen). Upon exit, destLen is the actual size of the
+ compressed buffer.
+
+ compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
+ memory, Z_BUF_ERROR if there was not enough room in the output buffer,
+ Z_STREAM_ERROR if the level parameter is invalid.
+*/
+
+ZEXTERN uLong ZEXPORT compressBound OF((uLong sourceLen));
+/*
+ compressBound() returns an upper bound on the compressed size after
+ compress() or compress2() on sourceLen bytes. It would be used before
+ a compress() or compress2() call to allocate the destination buffer.
+*/
+
+ZEXTERN int ZEXPORT uncompress OF((Bytef *dest, uLongf *destLen,
+ const Bytef *source, uLong sourceLen));
+/*
+ Decompresses the source buffer into the destination buffer. sourceLen is
+ the byte length of the source buffer. Upon entry, destLen is the total
+ size of the destination buffer, which must be large enough to hold the
+ entire uncompressed data. (The size of the uncompressed data must have
+ been saved previously by the compressor and transmitted to the decompressor
+ by some mechanism outside the scope of this compression library.)
+ Upon exit, destLen is the actual size of the compressed buffer.
+ This function can be used to decompress a whole file at once if the
+ input file is mmap'ed.
+
+ uncompress returns Z_OK if success, Z_MEM_ERROR if there was not
+ enough memory, Z_BUF_ERROR if there was not enough room in the output
+ buffer, or Z_DATA_ERROR if the input data was corrupted or incomplete.
+*/
+
+
+typedef voidp gzFile;
+
+ZEXTERN gzFile ZEXPORT gzopen OF((const char *path, const char *mode));
+/*
+ Opens a gzip (.gz) file for reading or writing. The mode parameter
+ is as in fopen ("rb" or "wb") but can also include a compression level
+ ("wb9") or a strategy: 'f' for filtered data as in "wb6f", 'h' for
+ Huffman only compression as in "wb1h", or 'R' for run-length encoding
+ as in "wb1R". (See the description of deflateInit2 for more information
+ about the strategy parameter.)
+
+ gzopen can be used to read a file which is not in gzip format; in this
+ case gzread will directly read from the file without decompression.
+
+ gzopen returns NULL if the file could not be opened or if there was
+ insufficient memory to allocate the (de)compression state; errno
+ can be checked to distinguish the two cases (if errno is zero, the
+ zlib error is Z_MEM_ERROR). */
+
+ZEXTERN gzFile ZEXPORT gzdopen OF((int fd, const char *mode));
+/*
+ gzdopen() associates a gzFile with the file descriptor fd. File
+ descriptors are obtained from calls like open, dup, creat, pipe or
+ fileno (in the file has been previously opened with fopen).
+ The mode parameter is as in gzopen.
+ The next call of gzclose on the returned gzFile will also close the
+ file descriptor fd, just like fclose(fdopen(fd), mode) closes the file
+ descriptor fd. If you want to keep fd open, use gzdopen(dup(fd), mode).
+ gzdopen returns NULL if there was insufficient memory to allocate
+ the (de)compression state.
+*/
+
+ZEXTERN int ZEXPORT gzsetparams OF((gzFile file, int level, int strategy));
+/*
+ Dynamically update the compression level or strategy. See the description
+ of deflateInit2 for the meaning of these parameters.
+ gzsetparams returns Z_OK if success, or Z_STREAM_ERROR if the file was not
+ opened for writing.
+*/
+
+ZEXTERN int ZEXPORT gzread OF((gzFile file, voidp buf, unsigned len));
+/*
+ Reads the given number of uncompressed bytes from the compressed file.
+ If the input file was not in gzip format, gzread copies the given number
+ of bytes into the buffer.
+ gzread returns the number of uncompressed bytes actually read (0 for
+ end of file, -1 for error). */
+
+ZEXTERN int ZEXPORT gzwrite OF((gzFile file,
+ voidpc buf, unsigned len));
+/*
+ Writes the given number of uncompressed bytes into the compressed file.
+ gzwrite returns the number of uncompressed bytes actually written
+ (0 in case of error).
+*/
+
+ZEXTERN int ZEXPORTVA gzprintf OF((gzFile file, const char *format, ...));
+/*
+ Converts, formats, and writes the args to the compressed file under
+ control of the format string, as in fprintf. gzprintf returns the number of
+ uncompressed bytes actually written (0 in case of error). The number of
+ uncompressed bytes written is limited to 4095. The caller should assure that
+ this limit is not exceeded. If it is exceeded, then gzprintf() will return
+ return an error (0) with nothing written. In this case, there may also be a
+ buffer overflow with unpredictable consequences, which is possible only if
+ zlib was compiled with the insecure functions sprintf() or vsprintf()
+ because the secure snprintf() or vsnprintf() functions were not available.
+*/
+
+ZEXTERN int ZEXPORT gzputs OF((gzFile file, const char *s));
+/*
+ Writes the given null-terminated string to the compressed file, excluding
+ the terminating null character.
+ gzputs returns the number of characters written, or -1 in case of error.
+*/
+
+ZEXTERN char * ZEXPORT gzgets OF((gzFile file, char *buf, int len));
+/*
+ Reads bytes from the compressed file until len-1 characters are read, or
+ a newline character is read and transferred to buf, or an end-of-file
+ condition is encountered. The string is then terminated with a null
+ character.
+ gzgets returns buf, or Z_NULL in case of error.
+*/
+
+ZEXTERN int ZEXPORT gzputc OF((gzFile file, int c));
+/*
+ Writes c, converted to an unsigned char, into the compressed file.
+ gzputc returns the value that was written, or -1 in case of error.
+*/
+
+ZEXTERN int ZEXPORT gzgetc OF((gzFile file));
+/*
+ Reads one byte from the compressed file. gzgetc returns this byte
+ or -1 in case of end of file or error.
+*/
+
+ZEXTERN int ZEXPORT gzungetc OF((int c, gzFile file));
+/*
+ Push one character back onto the stream to be read again later.
+ Only one character of push-back is allowed. gzungetc() returns the
+ character pushed, or -1 on failure. gzungetc() will fail if a
+ character has been pushed but not read yet, or if c is -1. The pushed
+ character will be discarded if the stream is repositioned with gzseek()
+ or gzrewind().
+*/
+
+ZEXTERN int ZEXPORT gzflush OF((gzFile file, int flush));
+/*
+ Flushes all pending output into the compressed file. The parameter
+ flush is as in the deflate() function. The return value is the zlib
+ error number (see function gzerror below). gzflush returns Z_OK if
+ the flush parameter is Z_FINISH and all output could be flushed.
+ gzflush should be called only when strictly necessary because it can
+ degrade compression.
+*/
+
+ZEXTERN z_off_t ZEXPORT gzseek OF((gzFile file,
+ z_off_t offset, int whence));
+/*
+ Sets the starting position for the next gzread or gzwrite on the
+ given compressed file. The offset represents a number of bytes in the
+ uncompressed data stream. The whence parameter is defined as in lseek(2);
+ the value SEEK_END is not supported.
+ If the file is opened for reading, this function is emulated but can be
+ extremely slow. If the file is opened for writing, only forward seeks are
+ supported; gzseek then compresses a sequence of zeroes up to the new
+ starting position.
+
+ gzseek returns the resulting offset location as measured in bytes from
+ the beginning of the uncompressed stream, or -1 in case of error, in
+ particular if the file is opened for writing and the new starting position
+ would be before the current position.
+*/
+
+ZEXTERN int ZEXPORT gzrewind OF((gzFile file));
+/*
+ Rewinds the given file. This function is supported only for reading.
+
+ gzrewind(file) is equivalent to (int)gzseek(file, 0L, SEEK_SET)
+*/
+
+ZEXTERN z_off_t ZEXPORT gztell OF((gzFile file));
+/*
+ Returns the starting position for the next gzread or gzwrite on the
+ given compressed file. This position represents a number of bytes in the
+ uncompressed data stream.
+
+ gztell(file) is equivalent to gzseek(file, 0L, SEEK_CUR)
+*/
+
+ZEXTERN int ZEXPORT gzeof OF((gzFile file));
+/*
+ Returns 1 when EOF has previously been detected reading the given
+ input stream, otherwise zero.
+*/
+
+ZEXTERN int ZEXPORT gzdirect OF((gzFile file));
+/*
+ Returns 1 if file is being read directly without decompression, otherwise
+ zero.
+*/
+
+ZEXTERN int ZEXPORT gzclose OF((gzFile file));
+/*
+ Flushes all pending output if necessary, closes the compressed file
+ and deallocates all the (de)compression state. The return value is the zlib
+ error number (see function gzerror below).
+*/
+
+ZEXTERN const char * ZEXPORT gzerror OF((gzFile file, int *errnum));
+/*
+ Returns the error message for the last error which occurred on the
+ given compressed file. errnum is set to zlib error number. If an
+ error occurred in the file system and not in the compression library,
+ errnum is set to Z_ERRNO and the application may consult errno
+ to get the exact error code.
+*/
+
+ZEXTERN void ZEXPORT gzclearerr OF((gzFile file));
+/*
+ Clears the error and end-of-file flags for file. This is analogous to the
+ clearerr() function in stdio. This is useful for continuing to read a gzip
+ file that is being written concurrently.
+*/
+
+ /* checksum functions */
+
+/*
+ These functions are not related to compression but are exported
+ anyway because they might be useful in applications using the
+ compression library.
+*/
+
+ZEXTERN uLong ZEXPORT adler32 OF((uLong adler, const Bytef *buf, uInt len));
+/*
+ Update a running Adler-32 checksum with the bytes buf[0..len-1] and
+ return the updated checksum. If buf is NULL, this function returns
+ the required initial value for the checksum.
+ An Adler-32 checksum is almost as reliable as a CRC32 but can be computed
+ much faster. Usage example:
+
+ uLong adler = adler32(0L, Z_NULL, 0);
+
+ while (read_buffer(buffer, length) != EOF) {
+ adler = adler32(adler, buffer, length);
+ }
+ if (adler != original_adler) error();
+*/
+
+ZEXTERN uLong ZEXPORT adler32_combine OF((uLong adler1, uLong adler2,
+ z_off_t len2));
+/*
+ Combine two Adler-32 checksums into one. For two sequences of bytes, seq1
+ and seq2 with lengths len1 and len2, Adler-32 checksums were calculated for
+ each, adler1 and adler2. adler32_combine() returns the Adler-32 checksum of
+ seq1 and seq2 concatenated, requiring only adler1, adler2, and len2.
+*/
+
+ZEXTERN uLong ZEXPORT crc32 OF((uLong crc, const Bytef *buf, uInt len));
+/*
+ Update a running CRC-32 with the bytes buf[0..len-1] and return the
+ updated CRC-32. If buf is NULL, this function returns the required initial
+ value for the for the crc. Pre- and post-conditioning (one's complement) is
+ performed within this function so it shouldn't be done by the application.
+ Usage example:
+
+ uLong crc = crc32(0L, Z_NULL, 0);
+
+ while (read_buffer(buffer, length) != EOF) {
+ crc = crc32(crc, buffer, length);
+ }
+ if (crc != original_crc) error();
+*/
+
+ZEXTERN uLong ZEXPORT crc32_combine OF((uLong crc1, uLong crc2, z_off_t len2));
+
+/*
+ Combine two CRC-32 check values into one. For two sequences of bytes,
+ seq1 and seq2 with lengths len1 and len2, CRC-32 check values were
+ calculated for each, crc1 and crc2. crc32_combine() returns the CRC-32
+ check value of seq1 and seq2 concatenated, requiring only crc1, crc2, and
+ len2.
+*/
+
+
+ /* various hacks, don't look :) */
+
+/* deflateInit and inflateInit are macros to allow checking the zlib version
+ * and the compiler's view of z_stream:
+ */
+ZEXTERN int ZEXPORT deflateInit_ OF((z_streamp strm, int level,
+ const char *version, int stream_size));
+ZEXTERN int ZEXPORT inflateInit_ OF((z_streamp strm,
+ const char *version, int stream_size));
+ZEXTERN int ZEXPORT deflateInit2_ OF((z_streamp strm, int level, int method,
+ int windowBits, int memLevel,
+ int strategy, const char *version,
+ int stream_size));
+ZEXTERN int ZEXPORT inflateInit2_ OF((z_streamp strm, int windowBits,
+ const char *version, int stream_size));
+ZEXTERN int ZEXPORT inflateBackInit_ OF((z_streamp strm, int windowBits,
+ unsigned char FAR *window,
+ const char *version,
+ int stream_size));
+#define deflateInit(strm, level) \
+ deflateInit_((strm), (level), ZLIB_VERSION, sizeof(z_stream))
+#define inflateInit(strm) \
+ inflateInit_((strm), ZLIB_VERSION, sizeof(z_stream))
+#define deflateInit2(strm, level, method, windowBits, memLevel, strategy) \
+ deflateInit2_((strm),(level),(method),(windowBits),(memLevel),\
+ (strategy), ZLIB_VERSION, sizeof(z_stream))
+#define inflateInit2(strm, windowBits) \
+ inflateInit2_((strm), (windowBits), ZLIB_VERSION, sizeof(z_stream))
+#define inflateBackInit(strm, windowBits, window) \
+ inflateBackInit_((strm), (windowBits), (window), \
+ ZLIB_VERSION, sizeof(z_stream))
+
+
+#if !defined(ZUTIL_H) && !defined(NO_DUMMY_DECL)
+ struct internal_state {int dummy;}; /* hack for buggy compilers */
+#endif
+
+ZEXTERN const char * ZEXPORT zError OF((int));
+ZEXTERN int ZEXPORT inflateSyncPoint OF((z_streamp z));
+ZEXTERN const uLongf * ZEXPORT get_crc_table OF((void));
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* ZLIB_H */
projects / DeDRM.git / commitdiff