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util.c
3561 lines (3258 loc) · 110 KB
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util.c
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/** @file util.c
* @brief Various helper functions
*
* Copyright (c) 2014 Bartek Fabiszewski
* http://www.fabiszewski.net
*
* This file is part of libmobi.
* Licensed under LGPL, either version 3, or any later.
* See <http://www.gnu.org/licenses/>
*/
#define _GNU_SOURCE 1
#ifndef __USE_BSD
#define __USE_BSD /* for strdup on linux/glibc */
#endif
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include "util.h"
#include "parse_rawml.h"
#include "index.h"
#include "debug.h"
#ifdef USE_ENCRYPTION
#include "encryption.h"
#endif
#ifdef USE_XMLWRITER
#include "opf.h"
#endif
#define MOBI_FONT_OBFUSCATED_BUFFER_COUNT 52
/** @brief Lookup table for cp1252 to utf8 encoding conversion */
static const unsigned char cp1252_to_utf8[32][3] = {
{0xe2,0x82,0xac},
{0},
{0xe2,0x80,0x9a},
{0xc6,0x92,0},
{0xe2,0x80,0x9e},
{0xe2,0x80,0xa6},
{0xe2,0x80,0xa0},
{0xe2,0x80,0xa1},
{0xcb,0x86,0},
{0xe2,0x80,0xb0},
{0xc5,0xa0,0},
{0xe2,0x80,0xb9},
{0xc5,0x92,0},
{0},
{0xc5,0xbd,0},
{0},
{0},
{0xe2,0x80,0x98},
{0xe2,0x80,0x99},
{0xe2,0x80,0x9c},
{0xe2,0x80,0x9d},
{0xe2,0x80,0xa2},
{0xe2,0x80,0x93},
{0xe2,0x80,0x94},
{0xcb,0x9c,0},
{0xe2,0x84,0xa2},
{0xc5,0xa1,0},
{0xe2,0x80,0xba},
{0xc5,0x93,0},
{0},
{0xc5,0xbe,0},
{0xc5,0xb8,0},
};
/**
@brief Get libmobi version
@return String version
*/
const char * mobi_version(void) {
#ifndef PACKAGE_VERSION
# define PACKAGE_VERSION "unknown"
#endif
return PACKAGE_VERSION;
}
/**
@brief Convert unicode codepoint to utf-8 sequence
@param[in,out] output Output string
@param[in] codepoint Unicode codepoint
@return Length of utf-8 sequence (maximum 4 bytes), zero on failure
*/
uint8_t mobi_unicode_to_utf8(char *output, const size_t codepoint) {
if (!output) {
return 0;
}
unsigned char *bytes = (unsigned char *) output;
if (codepoint < 0x80) {
bytes[0] = (unsigned char) codepoint;
return 1;
}
if (codepoint < 0x800) {
bytes[1] = (unsigned char) ((2 << 6) | (codepoint & 0x3f));
bytes[0] = (unsigned char) ((6 << 5) | (codepoint >> 6));
return 2;
}
if (codepoint < 0x10000) {
bytes[2] = (unsigned char) ((2 << 6) | (codepoint & 0x3f));
bytes[1] = (unsigned char) ((2 << 6) | ((codepoint >> 6) & 0x3f));
bytes[0] = (unsigned char) ((14 << 4) | (codepoint >> 12));
return 3;
}
if (codepoint < 0x11000) {
bytes[3] = (unsigned char) ((2 << 6) | (codepoint & 0x3f));
bytes[2] = (unsigned char) ((2 << 6) | ((codepoint >> 6) & 0x3f));
bytes[1] = (unsigned char) ((2 << 6) | ((codepoint >> 12) & 0x3f));
bytes[0] = (unsigned char) ((30 << 3) | (codepoint >> 18));
return 4;
}
return 0;
}
/**
@brief Convert cp1252 encoded string to utf-8
Maximum length of output string is 3 * (input string length) + 1
Output string will be null terminated (even if truncated)
@param[in,out] output Output string
@param[in,out] input Input string
@param[in,out] outsize Size of the allocated output buffer, will be set to output string length (without null terminator) on return
@param[in] insize Length of the input string.
@return MOBI_RET status code (on success MOBI_SUCCESS)
*/
MOBI_RET mobi_cp1252_to_utf8(char *output, const char *input, size_t *outsize, const size_t insize) {
if (!output || !input) {
return MOBI_PARAM_ERR;
}
const unsigned char *in = (unsigned char *) input;
unsigned char *out = (unsigned char *) output;
const unsigned char *outend = out + *outsize - 1; /* leave space for null terminator */
const unsigned char *inend = in + insize;
while (in < inend && out < outend && *in) {
if (*in < 0x80) {
*out++ = *in++;
}
else if (*in < 0xa0) {
/* table lookup */
size_t i = 0;
while (i < 3 && out < outend) {
unsigned char c = cp1252_to_utf8[*in - 0x80][i];
if (c == 0) {
break;
}
*out++ = c;
i++;
}
if (i == 0) {
/* unmappable character in input */
/* substitute with utf-8 replacement character */
if (out >= outend - 1) { break; }
*out++ = 0xff;
*out++ = 0xfd;
debug_print("Invalid character found: %c\n", *in);
}
in++;
}
else if (*in < 0xc0) {
if (out >= outend - 1) { break; }
*out++ = 0xc2;
*out++ = *in++;
}
else {
if (out >= outend - 1) { break; }
*out++ = 0xc3;
*out++ = (*in++ & 0x3f) + 0x80;
}
}
*out = '\0';
*outsize = (size_t) (out - (unsigned char *) output);
return MOBI_SUCCESS;
}
/**
@brief Convert utf-8 encoded string to cp1252
Characters out of range will be replaced with substitute character
@param[in,out] output Output string
@param[in,out] input Input string
@param[in,out] outsize Size of the allocated output buffer, will be set to output string length (without null terminator) on return
@param[in] insize Length of the input string.
@return MOBI_RET status code (on success MOBI_SUCCESS)
*/
MOBI_RET mobi_utf8_to_cp1252(char *output, const char *input, size_t *outsize, const size_t insize) {
if (!output || !input) {
return MOBI_PARAM_ERR;
}
const unsigned char *in = (unsigned char *) input;
unsigned char *out = (unsigned char *) output;
const unsigned char *outend = out + *outsize - 1; /* leave space for null terminator */
const unsigned char *inend = in + insize;
while (in < inend && out < outend && *in) {
/* one byte */
if (*in < 0x80) {
*out++ = *in++;
}
/* two bytes */
else if ((*in & 0xe0) == 0xc0) {
if (in > inend - 2) { break; }
if (in[0] == 0xc2 && (in[1] >= 0xa0 && in[1] <= 0xbf)) {
*out++ = in[1];
} else if (in[0] == 0xc3 && (in[1] >= 0x80 && in[1] <= 0xbf)) {
*out++ = in[1] + 0x40;
} else if (in[0] == 0xc5) {
switch (in[1]) {
case 0xa0:
*out++ = 0x8a;
break;
case 0x92:
*out++ = 0x8c;
break;
case 0xbd:
*out++ = 0x8e;
break;
case 0xa1:
*out++ = 0x9a;
break;
case 0x93:
*out++ = 0x9c;
break;
case 0xbe:
*out++ = 0x9e;
break;
case 0xb8:
*out++ = 0x9f;
break;
default:
*out++ = '?';
break;
}
} else if (in[0] == 0xc6 && in[1] == 0x92) {
*out++ = 0x83;
} else if (in[0] == 0xcb && in[1] == 0x86) {
*out++ = 0x88;
} else {
*out++ = '?';
}
in += 2;
}
/* three bytes */
else if ((*in & 0xf0) == 0xe0) {
if (in > inend - 3) { break; }
if (in[0] == 0xe2 && in[1] == 0x80) {
switch (in[2]) {
case 0x9a:
*out++ = 0x82;
break;
case 0x9e:
*out++ = 0x84;
break;
case 0xa6:
*out++ = 0x85;
break;
case 0xa0:
*out++ = 0x86;
break;
case 0xb0:
*out++ = 0x89;
break;
case 0xb9:
*out++ = 0x8b;
break;
case 0x98:
*out++ = 0x91;
break;
case 0x99:
*out++ = 0x92;
break;
case 0x9c:
*out++ = 0x93;
break;
case 0x9d:
*out++ = 0x94;
break;
case 0xa2:
*out++ = 0x95;
break;
case 0x93:
*out++ = 0x86;
break;
case 0x94:
*out++ = 0x97;
break;
case 0xba:
*out++ = 0x9b;
break;
default:
*out++ = '?';
break;
}
} else if (in[0] == 0xe2 && in[1] == 0x82 && in[2] == 0xac) {
*out++ = 0x80;
} else if (in[0] == 0xe2 && in[1] == 0x84 && in[2] == 0xa2) {
*out++ = 0x99;
} else {
*out++ = '?';
}
in += 3;
}
/* four bytes */
else if ((*in & 0xf8) == 0xf0) {
if (in > inend - 4) { break; }
*out++ = '?';
in += 4;
}
/* skip error */
else {
*out++ = '?';
in++;
}
}
*out = '\0';
*outsize = (size_t) (out - (unsigned char *) output);
return MOBI_SUCCESS;
}
/** @brief Decode ligature to cp1252
Some latin ligatures are encoded in indices to facilitate search
They are listed in LIGT header, but it seems every LIGT header contains
same 5 ligatures (even if not all of them are used).
So, instead of parsing header, we use static replacements.
Invalid control characters are skipped
@param[in] byte1 First byte - control character
@param[in] byte2 Second byte of the ligature
@return Ligature in cp1252 encoding, zero if not found
*/
uint8_t mobi_ligature_to_cp1252(const uint8_t byte1, const uint8_t byte2) {
uint8_t ligature = 0;
const uint8_t lig_OE = 0x8c;
const uint8_t lig_oe = 0x9c;
const uint8_t lig_AE = 0xc6;
const uint8_t lig_ae = 0xe6;
const uint8_t lig_ss = 0xdf;
switch (byte1) {
case 1:
if (byte2 == 0x45) { ligature = lig_OE; }
break;
case 2:
if (byte2 == 0x65) { ligature = lig_oe; }
break;
case 3:
if (byte2 == 0x45) { ligature = lig_AE; }
break;
case 4:
if (byte2 == 0x65) { ligature = lig_ae; }
break;
case 5:
if (byte2 == 0x73) { ligature = lig_ss; }
break;
}
return ligature;
}
/** @brief Decode ligature to utf-16
@param[in] byte1 First byte - control character, should be <= 5
@param[in] byte2 Second byte of the ligature
@return Ligature in utf-16 encoding, uni_replacement if not found
*/
uint16_t mobi_ligature_to_utf16(const uint32_t byte1, const uint32_t byte2) {
const uint16_t uni_replacement = 0xfffd;
uint16_t ligature = uni_replacement;
const uint16_t lig_OE = 0x152;
const uint16_t lig_oe = 0x153;
const uint16_t lig_AE = 0xc6;
const uint16_t lig_ae = 0xe6;
const uint16_t lig_ss = 0xdf;
switch (byte1) {
case 1:
if (byte2 == 0x45) { ligature = lig_OE; }
break;
case 2:
if (byte2 == 0x65) { ligature = lig_oe; }
break;
case 3:
if (byte2 == 0x45) { ligature = lig_AE; }
break;
case 4:
if (byte2 == 0x65) { ligature = lig_ae; }
break;
case 5:
if (byte2 == 0x73) { ligature = lig_ss; }
break;
}
return ligature;
}
/** @brief Get text encoding of mobi document
@param[in] m MOBIData structure holding document data and metadata
@return MOBIEncoding text encoding (MOBI_UTF8 or MOBI_CP1252)
*/
MOBIEncoding mobi_get_encoding(const MOBIData *m) {
if (m && m->mh) {
if (m->mh->text_encoding) {
if (*m->mh->text_encoding == MOBI_UTF8) {
return MOBI_UTF8;
}
}
}
return MOBI_CP1252;
}
/** @brief Check if document's text is cp1252 encoded
@param[in] m MOBIData structure holding document data and metadata
@return True or false
*/
bool mobi_is_cp1252(const MOBIData *m) {
return (mobi_get_encoding(m) == MOBI_CP1252);
}
/**
@brief strdup replacement
Returned pointer must be freed by caller
@param[in] s Input string
@return Duplicated string
*/
char * mobi_strdup(const char *s) {
char *p = malloc(strlen(s) + 1);
if (p) { strcpy(p, s); }
return p;
}
#define MOBI_LANG_MAX 99 /**< number of entries in mobi_locale array */
#define MOBI_REGION_MAX 21 /**< maximum number of entries in each language array */
/**< @brief Table of Mobipocket language-region codes
Based on IANA language-subtag registry with some custom Mobipocket modifications.
http://www.iana.org/assignments/language-subtag-registry/language-subtag-registry
*/
static const char *mobi_locale[MOBI_LANG_MAX][MOBI_REGION_MAX] = {
{"neutral"},
{
"ar", /**< Arabic >*/
"ar-sa", /**< Arabic (Saudi Arabia) >*/
"ar", /**< Arabic (Unknown) */
"ar-eg", /**< Arabic (Egypt) >*/
"ar", /**< Arabic (Unknown) */
"ar-dz", /**< Arabic (Algeria) >*/
"ar-ma", /**< Arabic (Morocco) >*/
"ar-tn", /**< Arabic (Tunisia) >*/
"ar-om", /**< Arabic (Oman) >*/
"ar-ye", /**< Arabic (Yemen) >*/
"ar-sy", /**< Arabic (Syria) >*/
"ar-jo", /**< Arabic (Jordan) >*/
"ar-lb", /**< Arabic (Lebanon) >*/
"ar-kw", /**< Arabic (Kuwait) >*/
"ar-ae", /**< Arabic (UAE) >*/
"ar-bh", /**< Arabic (Bahrain) >*/
"ar-qa", /**< Arabic (Qatar) >*/
},
{"bg"}, /**< Bulgarian >*/
{"ca"}, /**< Catalan >*/
{
"zh", /**< Chinese >*/
"zh-tw", /**< Chinese (Taiwan) >*/
"zh-cn", /**< Chinese (PRC) >*/
"zh-hk", /**< Chinese (Hong Kong) >*/
"zh-sg", /**< Chinese (Singapore) >*/
},
{"cs"}, /**< Czech >*/
{"da"}, /**< Danish >*/
{
"de", /**< German >*/
"de-de", /**< German (Germany) >*/
"de-ch", /**< German (Switzerland) >*/
"de-at", /**< German (Austria) >*/
"de-lu", /**< German (Luxembourg) >*/
"de-li", /**< German (Liechtenstein) >*/
},
{"el"}, /**< Greek (modern) >*/
{
"en", /**< English >*/
"en-us", /**< English (United States) >*/
"en-gb", /**< English (United Kingdom) >*/
"en-au", /**< English (Australia) >*/
"en-ca", /**< English (Canada) >*/
"en-nz", /**< English (New Zealand) >*/
"en-ie", /**< English (Ireland) >*/
"en-za", /**< English (South Africa) >*/
"en-jm", /**< English (Jamaica) >*/
"en", /**< English (Unknown) >*/
"en-bz", /**< English (Belize) >*/
"en-tt", /**< English (Trinidad) >*/
"en-zw", /**< English (Zimbabwe) >*/
"en-ph", /**< English (Philippines) >*/
},
{
"es", /**< Spanish >*/
"es-es", /**< Spanish (Spain) >*/
"es-mx", /**< Spanish (Mexico) >*/
"es", /**< Spanish (Unknown) >*/
"es-gt", /**< Spanish (Guatemala) >*/
"es-cr", /**< Spanish (Costa Rica) >*/
"es-pa", /**< Spanish (Panama) >*/
"es-do", /**< Spanish (Dominican Republic) >*/
"es-ve", /**< Spanish (Venezuela) >*/
"es-co", /**< Spanish (Colombia) >*/
"es-pe", /**< Spanish (Peru) >*/
"es-ar", /**< Spanish (Argentina) >*/
"es-ec", /**< Spanish (Ecuador) >*/
"es-cl", /**< Spanish (Chile) >*/
"es-uy", /**< Spanish (Uruguay) >*/
"es-py", /**< Spanish (Paraguay) >*/
"es-bo", /**< Spanish (Bolivia) >*/
"es-sv", /**< Spanish (El Salvador) >*/
"es-hn", /**< Spanish (Honduras) >*/
"es-ni", /**< Spanish (Nicaragua) >*/
"es-pr", /**< Spanish (Puerto Rico) >*/
},
{"fi"}, /**< Finnish >*/
{
"fr", /**< French >*/
"fr-fr", /**< French (France) >*/
"fr-be", /**< French (Belgium) >*/
"fr-ca", /**< French (Canada) >*/
"fr-ch", /**< French (Switzerland) >*/
"fr-lu", /**< French (Luxembourg) >*/
"fr-mc", /**< French (Monaco) >*/
},
{"he"}, /**< Hebrew (also code iw) >*/
{"hu"}, /**< Hungarian >*/
{"is"}, /**< Icelandic >*/
{
"it", /**< Italian >*/
"it-it", /**< Italian (Italy) >*/
"it-ch", /**< Italian (Switzerland) >*/
},
{"ja"}, /**< Japanese >*/
{"ko"}, /**< Korean >*/
{
"nl", /**< Dutch / Flemish >*/
"nl-nl", /**< Dutch (Netherlands) >*/
"nl-be", /**< Dutch (Belgium) >*/
},
{"no"}, /**< Norwegian >*/
{"pl"}, /**< Polish >*/
{
"pt", /**< Portuguese >*/
"pt-br", /**< Portuguese (Brazil) >*/
"pt-pt", /**< Portuguese (Portugal) >*/
},
{"rm"}, /**< Romansh >*/
{"ro"}, /**< Romanian >*/
{"ru"}, /**< Russian >*/
{
"hr", /**< Croatian >*/
"sr", /**< Serbian >*/
"sr", /**< Serbian (Unknown) >*/
"sr", /**< Serbian (Unknown) >*/
"sr", /**< Serbian (Serbia) >*/
},
{"sk"}, /**< Slovak >*/
{"sq"}, /**< Albanian >*/
{
"sv", /**< Swedish >*/
"sv-se", /**< Swedish (Sweden) >*/
"sv-fi", /**< Swedish (Finland) >*/
},
{"th"}, /**< Thai >*/
{"tr"}, /**< Turkish >*/
{"ur"}, /**< Urdu >*/
{"id"}, /**< Indonesian >*/
{"uk"}, /**< Ukrainian >*/
{"be"}, /**< Belarusian >*/
{"sl"}, /**< Slovenian >*/
{"et"}, /**< Estonian >*/
{"lv"}, /**< Latvian >*/
{"lt"}, /**< Lithuanian >*/
[41] = {"fa"}, /**< Farsi / Persian >*/
{"vi"}, /**< Vietnamese >*/
{"hy"}, /**< Armenian >*/
{"az"}, /**< Azerbaijani >*/
{"eu"}, /**< Basque >*/
{"sb"}, /**< "Sorbian" >*/
{"mk"}, /**< Macedonian >*/
{"sx"}, /**< "Sutu" >*/
{"ts"}, /**< Tsonga >*/
{"tn"}, /**< Tswana >*/
[52] = {"xh"}, /**< Xhosa >*/
{"zu"}, /**< Zulu >*/
{"af"}, /**< Afrikaans >*/
{"ka"}, /**< Georgian >*/
{"fo"}, /**< Faroese >*/
{"hi"}, /**< Hindi >*/
{"mt"}, /**< Maltese >*/
{"sz"}, /**<"Sami (Lappish)" >*/
{"ga"}, /**< Irish */
[62] = {"ms"}, /**< Malay >*/
{"kk"}, /**< Kazakh >*/
[65] = {"sw"}, /**< Swahili >*/
[67] = {
"uz", /**< Uzbek >*/
"uz", /**< Uzbek (Unknown) >*/
"uz-uz", /**< Uzbek (Uzbekistan) >*/
},
{"tt"}, /**< Tatar >*/
{"bn"}, /**< Bengali >*/
{"pa"}, /**< Punjabi >*/
{"gu"}, /**< Gujarati >*/
{"or"}, /**< Oriya >*/
{"ta"}, /**< Tamil >*/
{"te"}, /**< Telugu >*/
{"kn"}, /**< Kannada >*/
{"ml"}, /**< Malayalam >*/
{"as"}, /**< Assamese (not accepted in kindlegen >*/
{"mr"}, /**< Marathi >*/
{"sa"}, /**< Sanskrit >*/
[82] = {
"cy", /**< Welsh */
"cy-gb" /**< Welsh (UK) */
},
{
"gl", /**< Galician */
"gl-es" /**< Galician (Spain) */
},
[87] = {"x-kok"}, /**< Konkani (real language code is kok) >*/
[97] = {"ne"}, /**< Nepali >*/
{"fy"}, /**< Northern Frysian >*/
};
/**
@brief Get pointer to locale tag for a given Mobipocket locale number
Locale strings are based on IANA language-subtag registry with some custom Mobipocket modifications.
See mobi_locale array.
@param[in] locale_number Mobipocket locale number (as stored in MOBI header)
@return Pointer to locale string in mobi_locale array or NULL on error
*/
const char * mobi_get_locale_string(const uint32_t locale_number) {
uint8_t lang_code = locale_number & 0xffU;
uint32_t region_code = (locale_number >> 8) / 4;
if (lang_code >= MOBI_LANG_MAX || region_code >= MOBI_REGION_MAX) {
return NULL;
}
const char *string = mobi_locale[lang_code][region_code];
if (string == NULL || strlen(string) == 0 ) {
return NULL;
}
return string;
}
/**
@brief Get Mobipocket locale number for a given string tag
Locale strings are based on IANA language-subtag registry with some custom Mobipocket modifications.
See mobi_locale array.
@param[in] locale_string Locale string tag
@return Mobipocket locale number
*/
size_t mobi_get_locale_number(const char *locale_string) {
if (locale_string == NULL || strlen(locale_string) < 2) {
return 0;
}
size_t lang_code = 0;
while (lang_code < MOBI_LANG_MAX) {
char *p = (char *) mobi_locale[lang_code][0];
if (p == NULL) {
lang_code++;
continue;
}
if (tolower(locale_string[0]) != p[0] ||
tolower(locale_string[1]) != p[1]) {
lang_code++;
continue;
}
size_t region_code = 0;
while (region_code < MOBI_REGION_MAX) {
p = (char *) mobi_locale[lang_code][region_code];
if (p == NULL) { break; }
for (int i = 2;; i++) {
if (tolower(locale_string[i]) != p[i]) { break; }
if (p[i] == 0) {
return (region_code * 4) << 8 | lang_code;
}
}
region_code++;
}
return lang_code;
}
return 0;
}
/**
@brief Array of known file types, their extensions and mime-types.
*/
const MOBIFileMeta mobi_file_meta[] = {
{T_HTML, "html", "application/xhtml+xml"},
{T_CSS, "css", "text/css"},
{T_SVG, "svg", "image/svg+xml"},
{T_JPG, "jpg", "image/jpeg"},
{T_GIF, "gif", "image/gif"},
{T_PNG, "png", "image/png"},
{T_BMP, "bmp", "image/bmp"},
{T_OTF, "otf", "application/vnd.ms-opentype"},
{T_TTF, "ttf", "application/x-font-truetype"},
{T_MP3, "mp3", "audio/mpeg"},
{T_MPG, "mpg", "video/mpeg"},
{T_PDF, "pdf", "application/pdf"},
{T_OPF, "opf", "application/oebps-package+xml"},
{T_NCX, "ncx", "application/x-dtbncx+xml"},
/* termination struct */
{T_UNKNOWN, "dat", "application/unknown"}
};
/**
@brief Get MOBIFileMeta tag structure by MOBIFiletype type
@param[in] type MOBIFiletype type
@return MOBIExthMeta structure for given type, .type = T_UNKNOWN on failure
*/
MOBIFileMeta mobi_get_filemeta_by_type(const MOBIFiletype type) {
size_t i = 0;
while (mobi_file_meta[i].type != T_UNKNOWN) {
if (mobi_file_meta[i].type == type) {
return mobi_file_meta[i];
}
i++;
}
return mobi_file_meta[i];
}
/**
@brief Get ebook full name stored in Record 0 at offset given in MOBI header
@param[in] m MOBIData structure with loaded data
@param[in,out] fullname Memory area to be filled with zero terminated full name string
@param[in] len Maximum length of the string without null terminator
@return MOBI_RET status code (on success MOBI_SUCCESS)
*/
MOBI_RET mobi_get_fullname(const MOBIData *m, char *fullname, const size_t len) {
if (fullname == NULL || len == 0) {
return MOBI_PARAM_ERR;
}
fullname[0] = '\0';
if (m == NULL) {
debug_print("%s", "Mobi structure not initialized\n");
return MOBI_INIT_FAILED;
}
if (m->mh == NULL || m->mh->full_name == NULL) {
return MOBI_INIT_FAILED;
}
if (mobi_is_cp1252(m)) {
size_t out_len = len + 1;
mobi_cp1252_to_utf8(fullname, m->mh->full_name, &out_len, strlen(m->mh->full_name));
} else {
strncpy(fullname, m->mh->full_name, len);
fullname[len] = '\0';
}
return MOBI_SUCCESS;
}
/**
@brief Set ebook full name stored in Record 0 at offset given in MOBI header
@param[in,out] m MOBIData structure with loaded data
@param[in] fullname Memory area to be filled with zero terminated full name string
@return MOBI_RET status code (on success MOBI_SUCCESS)
*/
MOBI_RET mobi_set_fullname(MOBIData *m, const char *fullname) {
if (mobi_exists_mobiheader(m) && m->mh->full_name) {
size_t title_length = min(strlen(fullname), MOBI_TITLE_SIZEMAX);
char *new_title = malloc(title_length + 1);
if (new_title == NULL) {
return MOBI_MALLOC_FAILED;
}
if (mobi_is_cp1252(m)) {
size_t new_size = title_length + 1;
MOBI_RET ret = mobi_utf8_to_cp1252(new_title, fullname, &new_size, title_length);
if (ret != MOBI_SUCCESS) {
free(new_title);
return ret;
}
} else {
memcpy(new_title, fullname, title_length);
new_title[title_length] = '\0';
}
free(m->mh->full_name);
m->mh->full_name = new_title;
if (mobi_is_hybrid(m) && mobi_exists_mobiheader(m->next) && m->next->mh->full_name) {
char *new_title2 = strdup(new_title);
if (new_title2 == NULL) {
return MOBI_MALLOC_FAILED;
}
free(m->next->mh->full_name);
m->next->mh->full_name = new_title2;
}
}
return MOBI_SUCCESS;
}
/**
@brief Set palm database name
@param[in,out] m MOBIData structure with loaded data
@param[in] name Name
@return MOBI_RET status code (on success MOBI_SUCCESS)
*/
MOBI_RET mobi_set_pdbname(MOBIData *m, const char *name) {
if (m == NULL || m->ph == NULL) {
return MOBI_INIT_FAILED;
}
char dbname[PALMDB_NAME_SIZE_MAX + 1];
if (mobi_is_cp1252(m)) {
size_t size = PALMDB_NAME_SIZE_MAX + 1;
MOBI_RET ret = mobi_utf8_to_cp1252(dbname, name, &size, strlen(name));
if (ret != MOBI_SUCCESS) {
return ret;
}
} else {
memcpy(dbname, name, PALMDB_NAME_SIZE_MAX);
dbname[PALMDB_NAME_SIZE_MAX] = '\0';
}
char c;
int i = 0;
while ((c = dbname[i])) {
if (!isalnum(c)) {
c = '_';
}
m->ph->name[i++] = c;
}
m->ph->name[i] = '\0';
return MOBI_SUCCESS;
}
/**
@brief Get palm database record with given unique id
@param[in] m MOBIData structure with loaded data
@param[in] uid Unique id
@return Pointer to MOBIPdbRecord record structure, NULL on failure
*/
MOBIPdbRecord * mobi_get_record_by_uid(const MOBIData *m, const size_t uid) {
if (m == NULL) {
debug_print("%s", "Mobi structure not initialized\n");
return NULL;
}
if (m->rec == NULL) {
return NULL;
}
MOBIPdbRecord *curr = m->rec;
while (curr != NULL) {
if (curr->uid == uid) {
return curr;
}
curr = curr->next;
}
return NULL;
}
/**
@brief Get rawml->markup MOBIPart part by uid
@param[in] rawml MOBIRawml structure with loaded data
@param[in] uid Unique id
@return Pointer to MOBIPart structure, NULL on failure
*/
MOBIPart * mobi_get_part_by_uid(const MOBIRawml *rawml, const size_t uid) {
if (rawml == NULL) {
debug_print("%s", "Mobi structure not initialized\n");
return NULL;
}
if (rawml->markup == NULL) {
return NULL;
}
MOBIPart *part = rawml->markup;
while (part != NULL) {
if (part->uid == uid) {
return part;
}
part = part->next;
}
return NULL;
}
/**
@brief Get rawml->flow MOBIPart part by uid
@param[in] rawml MOBIRawml structure with loaded data
@param[in] uid Unique id
@return Pointer to MOBIPart structure, NULL on failure
*/
MOBIPart * mobi_get_flow_by_uid(const MOBIRawml *rawml, const size_t uid) {
if (rawml == NULL) {
debug_print("%s", "Mobi structure not initialized\n");
return NULL;
}
if (rawml->flow == NULL) {
return NULL;
}
MOBIPart *part = rawml->flow;
while (part != NULL) {
if (part->uid == uid) {
return part;
}
part = part->next;
}
return NULL;
}
/**
@brief Find flow part by flow id (fid) from kindle:flow:fid link.
Flow fid is base32 encoded part uid.
@param[in] rawml Structure MOBIRawml
@param[in] fid String four character base32 fid
@return Pointer to MOBIPart structure, NULL on failure
*/
MOBIPart * mobi_get_flow_by_fid(const MOBIRawml *rawml, const char *fid) {
/* get file number */
uint32_t part_id;
MOBI_RET ret = mobi_base32_decode(&part_id, fid);
if (ret != MOBI_SUCCESS) {
return NULL;
}
return mobi_get_flow_by_uid(rawml, part_id);
}
/**
@brief Get MOBIPart resource record with given unique id
@param[in] rawml MOBIRawml structure with loaded data
@param[in] uid Unique id
@return Pointer to MOBIPart resource structure, NULL on failure
*/
MOBIPart * mobi_get_resource_by_uid(const MOBIRawml *rawml, const size_t uid) {
if (rawml == NULL) {
debug_print("%s", "Rawml structure not initialized\n");
return NULL;
}
if (rawml->resources == NULL) {
debug_print("%s", "Rawml structure not initialized\n");
return NULL;
}
MOBIPart *curr = rawml->resources;
while (curr != NULL) {
if (curr->uid == uid) {
return curr;
}
curr = curr->next;
}
return NULL;
}
/**
@brief Find resource by flow id (fid) from kindle:embed:fid link.
Flow fid is base32 encoded part uid.
@param[in] rawml Structure MOBIRawml
@param[in] fid String four character base32 fid
@return Pointer to MOBIPart structure, NULL on failure
*/
MOBIPart * mobi_get_resource_by_fid(const MOBIRawml *rawml, const char *fid) {
/* get file number */
uint32_t part_id;
MOBI_RET ret = mobi_base32_decode(&part_id, fid);
if (ret != MOBI_SUCCESS) {
return NULL;
}
part_id--;
return mobi_get_resource_by_uid(rawml, part_id);
}
/**
@brief Get MOBIFiletype type of MOBIPart resource record with given unique id
@param[in] rawml MOBIRawml structure with loaded data
@param[in] uid Unique id
@return Pointer to MOBIPart resource structure, NULL on failure
*/
MOBIFiletype mobi_get_resourcetype_by_uid(const MOBIRawml *rawml, const size_t uid) {
if (rawml == NULL) {
debug_print("%s", "Rawml structure not initialized\n");
return T_UNKNOWN;
}
if (rawml->resources == NULL) {
debug_print("%s", "Rawml structure not initialized\n");
return T_UNKNOWN;
}
MOBIPart *curr = rawml->resources;
while (curr != NULL) {
if (curr->uid == uid) {