/* +----------------------------------------------------------------------+ | PHP Version 7 | +----------------------------------------------------------------------+ | Copyright (c) 1997-2018 The PHP Group | +----------------------------------------------------------------------+ | This source file is subject to version 3.01 of the PHP license, | | that is bundled with this package in the file LICENSE, and is | | available through the world-wide-web at the following url: | | http://www.php.net/license/3_01.txt | | If you did not receive a copy of the PHP license and are unable to | | obtain it through the world-wide-web, please send a note to | | license@php.net so we can mail you a copy immediately. | +----------------------------------------------------------------------+ | Authors: Rasmus Lerdorf | | Marcus Boerger | +----------------------------------------------------------------------+ */ /* $Id$ */ /* ToDos * * See if example images from http://www.exif.org have illegal * thumbnail sizes or if code is corrupt. * Create/Update exif headers. * Create/Remove/Update image thumbnails. */ /* Security * * At current time i do not see any security problems but a potential * attacker could generate an image with recursive ifd pointers...(Marcus) */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "php.h" #include "ext/standard/file.h" #if HAVE_EXIF /* When EXIF_DEBUG is defined the module generates a lot of debug messages * that help understanding what is going on. This can and should be used * while extending the module as it shows if you are at the right position. * You are always considered to have a copy of TIFF6.0 and EXIF2.10 standard. */ #undef EXIF_DEBUG #ifdef EXIF_DEBUG #define EXIFERR_DC , const char *_file, size_t _line #define EXIFERR_CC , __FILE__, __LINE__ #else #define EXIFERR_DC #define EXIFERR_CC #endif #undef EXIF_JPEG2000 #include "php_exif.h" #include #include "php_ini.h" #include "ext/standard/php_string.h" #include "ext/standard/php_image.h" #include "ext/standard/info.h" /* needed for ssize_t definition */ #include typedef unsigned char uchar; #ifndef safe_emalloc # define safe_emalloc(a,b,c) emalloc((a)*(b)+(c)) #endif #ifndef safe_erealloc # define safe_erealloc(p,a,b,c) erealloc(p, (a)*(b)+(c)) #endif #ifndef TRUE # define TRUE 1 # define FALSE 0 #endif #ifndef max # define max(a,b) ((a)>(b) ? (a) : (b)) #endif #define EFREE_IF(ptr) if (ptr) efree(ptr) #define MAX_IFD_NESTING_LEVEL 100 /* {{{ arginfo */ ZEND_BEGIN_ARG_INFO(arginfo_exif_tagname, 0) ZEND_ARG_INFO(0, index) ZEND_END_ARG_INFO() ZEND_BEGIN_ARG_INFO_EX(arginfo_exif_read_data, 0, 0, 1) ZEND_ARG_INFO(0, filename) ZEND_ARG_INFO(0, sections_needed) ZEND_ARG_INFO(0, sub_arrays) ZEND_ARG_INFO(0, read_thumbnail) ZEND_END_ARG_INFO() ZEND_BEGIN_ARG_INFO_EX(arginfo_exif_thumbnail, 0, 0, 1) ZEND_ARG_INFO(0, filename) ZEND_ARG_INFO(1, width) ZEND_ARG_INFO(1, height) ZEND_ARG_INFO(1, imagetype) ZEND_END_ARG_INFO() ZEND_BEGIN_ARG_INFO(arginfo_exif_imagetype, 0) ZEND_ARG_INFO(0, imagefile) ZEND_END_ARG_INFO() /* }}} */ /* {{{ exif_functions[] */ const zend_function_entry exif_functions[] = { PHP_FE(exif_read_data, arginfo_exif_read_data) PHP_FALIAS(read_exif_data, exif_read_data, arginfo_exif_read_data) PHP_FE(exif_tagname, arginfo_exif_tagname) PHP_FE(exif_thumbnail, arginfo_exif_thumbnail) PHP_FE(exif_imagetype, arginfo_exif_imagetype) PHP_FE_END }; /* }}} */ /* {{{ PHP_MINFO_FUNCTION */ PHP_MINFO_FUNCTION(exif) { php_info_print_table_start(); php_info_print_table_row(2, "EXIF Support", "enabled"); php_info_print_table_row(2, "EXIF Version", PHP_EXIF_VERSION); php_info_print_table_row(2, "Supported EXIF Version", "0220"); php_info_print_table_row(2, "Supported filetypes", "JPEG,TIFF"); php_info_print_table_end(); DISPLAY_INI_ENTRIES(); } /* }}} */ ZEND_BEGIN_MODULE_GLOBALS(exif) char * encode_unicode; char * decode_unicode_be; char * decode_unicode_le; char * encode_jis; char * decode_jis_be; char * decode_jis_le; ZEND_END_MODULE_GLOBALS(exif) ZEND_DECLARE_MODULE_GLOBALS(exif) #define EXIF_G(v) ZEND_MODULE_GLOBALS_ACCESSOR(exif, v) #if defined(ZTS) && defined(COMPILE_DL_EXIF) ZEND_TSRMLS_CACHE_DEFINE() #endif /* {{{ PHP_INI */ ZEND_INI_MH(OnUpdateEncode) { if (new_value && ZSTR_LEN(new_value)) { const zend_encoding **return_list; size_t return_size; if (FAILURE == zend_multibyte_parse_encoding_list(ZSTR_VAL(new_value), ZSTR_LEN(new_value), &return_list, &return_size, 0)) { php_error_docref(NULL, E_WARNING, "Illegal encoding ignored: '%s'", ZSTR_VAL(new_value)); return FAILURE; } efree(return_list); } return OnUpdateString(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage); } ZEND_INI_MH(OnUpdateDecode) { if (new_value) { const zend_encoding **return_list; size_t return_size; if (FAILURE == zend_multibyte_parse_encoding_list(ZSTR_VAL(new_value), ZSTR_LEN(new_value), &return_list, &return_size, 0)) { php_error_docref(NULL, E_WARNING, "Illegal encoding ignored: '%s'", ZSTR_VAL(new_value)); return FAILURE; } efree(return_list); } return OnUpdateString(entry, new_value, mh_arg1, mh_arg2, mh_arg3, stage); } PHP_INI_BEGIN() STD_PHP_INI_ENTRY("exif.encode_unicode", "ISO-8859-15", PHP_INI_ALL, OnUpdateEncode, encode_unicode, zend_exif_globals, exif_globals) STD_PHP_INI_ENTRY("exif.decode_unicode_motorola", "UCS-2BE", PHP_INI_ALL, OnUpdateDecode, decode_unicode_be, zend_exif_globals, exif_globals) STD_PHP_INI_ENTRY("exif.decode_unicode_intel", "UCS-2LE", PHP_INI_ALL, OnUpdateDecode, decode_unicode_le, zend_exif_globals, exif_globals) STD_PHP_INI_ENTRY("exif.encode_jis", "", PHP_INI_ALL, OnUpdateEncode, encode_jis, zend_exif_globals, exif_globals) STD_PHP_INI_ENTRY("exif.decode_jis_motorola", "JIS", PHP_INI_ALL, OnUpdateDecode, decode_jis_be, zend_exif_globals, exif_globals) STD_PHP_INI_ENTRY("exif.decode_jis_intel", "JIS", PHP_INI_ALL, OnUpdateDecode, decode_jis_le, zend_exif_globals, exif_globals) PHP_INI_END() /* }}} */ /* {{{ PHP_GINIT_FUNCTION */ static PHP_GINIT_FUNCTION(exif) { #if defined(COMPILE_DL_EXIF) && defined(ZTS) ZEND_TSRMLS_CACHE_UPDATE(); #endif exif_globals->encode_unicode = NULL; exif_globals->decode_unicode_be = NULL; exif_globals->decode_unicode_le = NULL; exif_globals->encode_jis = NULL; exif_globals->decode_jis_be = NULL; exif_globals->decode_jis_le = NULL; } /* }}} */ /* {{{ PHP_MINIT_FUNCTION(exif) Get the size of an image as 4-element array */ PHP_MINIT_FUNCTION(exif) { REGISTER_INI_ENTRIES(); if (zend_hash_str_exists(&module_registry, "mbstring", sizeof("mbstring")-1)) { REGISTER_LONG_CONSTANT("EXIF_USE_MBSTRING", 1, CONST_CS | CONST_PERSISTENT); } else { REGISTER_LONG_CONSTANT("EXIF_USE_MBSTRING", 0, CONST_CS | CONST_PERSISTENT); } return SUCCESS; } /* }}} */ /* {{{ PHP_MSHUTDOWN_FUNCTION */ PHP_MSHUTDOWN_FUNCTION(exif) { UNREGISTER_INI_ENTRIES(); return SUCCESS; } /* }}} */ /* {{{ exif dependencies */ static const zend_module_dep exif_module_deps[] = { ZEND_MOD_REQUIRED("standard") ZEND_MOD_OPTIONAL("mbstring") ZEND_MOD_END }; /* }}} */ /* {{{ exif_module_entry */ zend_module_entry exif_module_entry = { STANDARD_MODULE_HEADER_EX, NULL, exif_module_deps, "exif", exif_functions, PHP_MINIT(exif), PHP_MSHUTDOWN(exif), NULL, NULL, PHP_MINFO(exif), PHP_EXIF_VERSION, PHP_MODULE_GLOBALS(exif), PHP_GINIT(exif), NULL, NULL, STANDARD_MODULE_PROPERTIES_EX }; /* }}} */ #ifdef COMPILE_DL_EXIF ZEND_GET_MODULE(exif) #endif /* {{{ php_strnlen * get length of string if buffer if less than buffer size or buffer size */ static size_t php_strnlen(char* str, size_t maxlen) { size_t len = 0; if (str && maxlen && *str) { do { len++; } while (--maxlen && *(++str)); } return len; } /* }}} */ /* {{{ error messages */ static const char * EXIF_ERROR_FILEEOF = "Unexpected end of file reached"; static const char * EXIF_ERROR_CORRUPT = "File structure corrupted"; static const char * EXIF_ERROR_THUMBEOF = "Thumbnail goes IFD boundary or end of file reached"; static const char * EXIF_ERROR_FSREALLOC = "Illegal reallocating of undefined file section"; #define EXIF_ERRLOG_FILEEOF(ImageInfo) exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s", EXIF_ERROR_FILEEOF); #define EXIF_ERRLOG_CORRUPT(ImageInfo) exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s", EXIF_ERROR_CORRUPT); #define EXIF_ERRLOG_THUMBEOF(ImageInfo) exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s", EXIF_ERROR_THUMBEOF); #define EXIF_ERRLOG_FSREALLOC(ImageInfo) exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s", EXIF_ERROR_FSREALLOC); /* }}} */ /* {{{ format description defines Describes format descriptor */ static int php_tiff_bytes_per_format[] = {0, 1, 1, 2, 4, 8, 1, 1, 2, 4, 8, 4, 8, 1}; #define NUM_FORMATS 13 #define TAG_FMT_BYTE 1 #define TAG_FMT_STRING 2 #define TAG_FMT_USHORT 3 #define TAG_FMT_ULONG 4 #define TAG_FMT_URATIONAL 5 #define TAG_FMT_SBYTE 6 #define TAG_FMT_UNDEFINED 7 #define TAG_FMT_SSHORT 8 #define TAG_FMT_SLONG 9 #define TAG_FMT_SRATIONAL 10 #define TAG_FMT_SINGLE 11 #define TAG_FMT_DOUBLE 12 #define TAG_FMT_IFD 13 #ifdef EXIF_DEBUG static char *exif_get_tagformat(int format) { switch(format) { case TAG_FMT_BYTE: return "BYTE"; case TAG_FMT_STRING: return "STRING"; case TAG_FMT_USHORT: return "USHORT"; case TAG_FMT_ULONG: return "ULONG"; case TAG_FMT_URATIONAL: return "URATIONAL"; case TAG_FMT_SBYTE: return "SBYTE"; case TAG_FMT_UNDEFINED: return "UNDEFINED"; case TAG_FMT_SSHORT: return "SSHORT"; case TAG_FMT_SLONG: return "SLONG"; case TAG_FMT_SRATIONAL: return "SRATIONAL"; case TAG_FMT_SINGLE: return "SINGLE"; case TAG_FMT_DOUBLE: return "DOUBLE"; case TAG_FMT_IFD: return "IFD"; } return "*Illegal"; } #endif /* Describes tag values */ #define TAG_GPS_VERSION_ID 0x0000 #define TAG_GPS_LATITUDE_REF 0x0001 #define TAG_GPS_LATITUDE 0x0002 #define TAG_GPS_LONGITUDE_REF 0x0003 #define TAG_GPS_LONGITUDE 0x0004 #define TAG_GPS_ALTITUDE_REF 0x0005 #define TAG_GPS_ALTITUDE 0x0006 #define TAG_GPS_TIME_STAMP 0x0007 #define TAG_GPS_SATELLITES 0x0008 #define TAG_GPS_STATUS 0x0009 #define TAG_GPS_MEASURE_MODE 0x000A #define TAG_GPS_DOP 0x000B #define TAG_GPS_SPEED_REF 0x000C #define TAG_GPS_SPEED 0x000D #define TAG_GPS_TRACK_REF 0x000E #define TAG_GPS_TRACK 0x000F #define TAG_GPS_IMG_DIRECTION_REF 0x0010 #define TAG_GPS_IMG_DIRECTION 0x0011 #define TAG_GPS_MAP_DATUM 0x0012 #define TAG_GPS_DEST_LATITUDE_REF 0x0013 #define TAG_GPS_DEST_LATITUDE 0x0014 #define TAG_GPS_DEST_LONGITUDE_REF 0x0015 #define TAG_GPS_DEST_LONGITUDE 0x0016 #define TAG_GPS_DEST_BEARING_REF 0x0017 #define TAG_GPS_DEST_BEARING 0x0018 #define TAG_GPS_DEST_DISTANCE_REF 0x0019 #define TAG_GPS_DEST_DISTANCE 0x001A #define TAG_GPS_PROCESSING_METHOD 0x001B #define TAG_GPS_AREA_INFORMATION 0x001C #define TAG_GPS_DATE_STAMP 0x001D #define TAG_GPS_DIFFERENTIAL 0x001E #define TAG_TIFF_COMMENT 0x00FE /* SHOUDLNT HAPPEN */ #define TAG_NEW_SUBFILE 0x00FE /* New version of subfile tag */ #define TAG_SUBFILE_TYPE 0x00FF /* Old version of subfile tag */ #define TAG_IMAGEWIDTH 0x0100 #define TAG_IMAGEHEIGHT 0x0101 #define TAG_BITS_PER_SAMPLE 0x0102 #define TAG_COMPRESSION 0x0103 #define TAG_PHOTOMETRIC_INTERPRETATION 0x0106 #define TAG_TRESHHOLDING 0x0107 #define TAG_CELL_WIDTH 0x0108 #define TAG_CELL_HEIGHT 0x0109 #define TAG_FILL_ORDER 0x010A #define TAG_DOCUMENT_NAME 0x010D #define TAG_IMAGE_DESCRIPTION 0x010E #define TAG_MAKE 0x010F #define TAG_MODEL 0x0110 #define TAG_STRIP_OFFSETS 0x0111 #define TAG_ORIENTATION 0x0112 #define TAG_SAMPLES_PER_PIXEL 0x0115 #define TAG_ROWS_PER_STRIP 0x0116 #define TAG_STRIP_BYTE_COUNTS 0x0117 #define TAG_MIN_SAMPPLE_VALUE 0x0118 #define TAG_MAX_SAMPLE_VALUE 0x0119 #define TAG_X_RESOLUTION 0x011A #define TAG_Y_RESOLUTION 0x011B #define TAG_PLANAR_CONFIGURATION 0x011C #define TAG_PAGE_NAME 0x011D #define TAG_X_POSITION 0x011E #define TAG_Y_POSITION 0x011F #define TAG_FREE_OFFSETS 0x0120 #define TAG_FREE_BYTE_COUNTS 0x0121 #define TAG_GRAY_RESPONSE_UNIT 0x0122 #define TAG_GRAY_RESPONSE_CURVE 0x0123 #define TAG_RESOLUTION_UNIT 0x0128 #define TAG_PAGE_NUMBER 0x0129 #define TAG_TRANSFER_FUNCTION 0x012D #define TAG_SOFTWARE 0x0131 #define TAG_DATETIME 0x0132 #define TAG_ARTIST 0x013B #define TAG_HOST_COMPUTER 0x013C #define TAG_PREDICTOR 0x013D #define TAG_WHITE_POINT 0x013E #define TAG_PRIMARY_CHROMATICITIES 0x013F #define TAG_COLOR_MAP 0x0140 #define TAG_HALFTONE_HINTS 0x0141 #define TAG_TILE_WIDTH 0x0142 #define TAG_TILE_LENGTH 0x0143 #define TAG_TILE_OFFSETS 0x0144 #define TAG_TILE_BYTE_COUNTS 0x0145 #define TAG_SUB_IFD 0x014A #define TAG_INK_SETMPUTER 0x014C #define TAG_INK_NAMES 0x014D #define TAG_NUMBER_OF_INKS 0x014E #define TAG_DOT_RANGE 0x0150 #define TAG_TARGET_PRINTER 0x0151 #define TAG_EXTRA_SAMPLE 0x0152 #define TAG_SAMPLE_FORMAT 0x0153 #define TAG_S_MIN_SAMPLE_VALUE 0x0154 #define TAG_S_MAX_SAMPLE_VALUE 0x0155 #define TAG_TRANSFER_RANGE 0x0156 #define TAG_JPEG_TABLES 0x015B #define TAG_JPEG_PROC 0x0200 #define TAG_JPEG_INTERCHANGE_FORMAT 0x0201 #define TAG_JPEG_INTERCHANGE_FORMAT_LEN 0x0202 #define TAG_JPEG_RESTART_INTERVAL 0x0203 #define TAG_JPEG_LOSSLESS_PREDICTOR 0x0205 #define TAG_JPEG_POINT_TRANSFORMS 0x0206 #define TAG_JPEG_Q_TABLES 0x0207 #define TAG_JPEG_DC_TABLES 0x0208 #define TAG_JPEG_AC_TABLES 0x0209 #define TAG_YCC_COEFFICIENTS 0x0211 #define TAG_YCC_SUB_SAMPLING 0x0212 #define TAG_YCC_POSITIONING 0x0213 #define TAG_REFERENCE_BLACK_WHITE 0x0214 /* 0x0301 - 0x0302 */ /* 0x0320 */ /* 0x0343 */ /* 0x5001 - 0x501B */ /* 0x5021 - 0x503B */ /* 0x5090 - 0x5091 */ /* 0x5100 - 0x5101 */ /* 0x5110 - 0x5113 */ /* 0x80E3 - 0x80E6 */ /* 0x828d - 0x828F */ #define TAG_COPYRIGHT 0x8298 #define TAG_EXPOSURETIME 0x829A #define TAG_FNUMBER 0x829D #define TAG_EXIF_IFD_POINTER 0x8769 #define TAG_ICC_PROFILE 0x8773 #define TAG_EXPOSURE_PROGRAM 0x8822 #define TAG_SPECTRAL_SENSITY 0x8824 #define TAG_GPS_IFD_POINTER 0x8825 #define TAG_ISOSPEED 0x8827 #define TAG_OPTOELECTRIC_CONVERSION_F 0x8828 /* 0x8829 - 0x882b */ #define TAG_EXIFVERSION 0x9000 #define TAG_DATE_TIME_ORIGINAL 0x9003 #define TAG_DATE_TIME_DIGITIZED 0x9004 #define TAG_COMPONENT_CONFIG 0x9101 #define TAG_COMPRESSED_BITS_PER_PIXEL 0x9102 #define TAG_SHUTTERSPEED 0x9201 #define TAG_APERTURE 0x9202 #define TAG_BRIGHTNESS_VALUE 0x9203 #define TAG_EXPOSURE_BIAS_VALUE 0x9204 #define TAG_MAX_APERTURE 0x9205 #define TAG_SUBJECT_DISTANCE 0x9206 #define TAG_METRIC_MODULE 0x9207 #define TAG_LIGHT_SOURCE 0x9208 #define TAG_FLASH 0x9209 #define TAG_FOCAL_LENGTH 0x920A /* 0x920B - 0x920D */ /* 0x9211 - 0x9216 */ #define TAG_SUBJECT_AREA 0x9214 #define TAG_MAKER_NOTE 0x927C #define TAG_USERCOMMENT 0x9286 #define TAG_SUB_SEC_TIME 0x9290 #define TAG_SUB_SEC_TIME_ORIGINAL 0x9291 #define TAG_SUB_SEC_TIME_DIGITIZED 0x9292 /* 0x923F */ /* 0x935C */ #define TAG_XP_TITLE 0x9C9B #define TAG_XP_COMMENTS 0x9C9C #define TAG_XP_AUTHOR 0x9C9D #define TAG_XP_KEYWORDS 0x9C9E #define TAG_XP_SUBJECT 0x9C9F #define TAG_FLASH_PIX_VERSION 0xA000 #define TAG_COLOR_SPACE 0xA001 #define TAG_COMP_IMAGE_WIDTH 0xA002 /* compressed images only */ #define TAG_COMP_IMAGE_HEIGHT 0xA003 #define TAG_RELATED_SOUND_FILE 0xA004 #define TAG_INTEROP_IFD_POINTER 0xA005 /* IFD pointer */ #define TAG_FLASH_ENERGY 0xA20B #define TAG_SPATIAL_FREQUENCY_RESPONSE 0xA20C #define TAG_FOCALPLANE_X_RES 0xA20E #define TAG_FOCALPLANE_Y_RES 0xA20F #define TAG_FOCALPLANE_RESOLUTION_UNIT 0xA210 #define TAG_SUBJECT_LOCATION 0xA214 #define TAG_EXPOSURE_INDEX 0xA215 #define TAG_SENSING_METHOD 0xA217 #define TAG_FILE_SOURCE 0xA300 #define TAG_SCENE_TYPE 0xA301 #define TAG_CFA_PATTERN 0xA302 #define TAG_CUSTOM_RENDERED 0xA401 #define TAG_EXPOSURE_MODE 0xA402 #define TAG_WHITE_BALANCE 0xA403 #define TAG_DIGITAL_ZOOM_RATIO 0xA404 #define TAG_FOCAL_LENGTH_IN_35_MM_FILM 0xA405 #define TAG_SCENE_CAPTURE_TYPE 0xA406 #define TAG_GAIN_CONTROL 0xA407 #define TAG_CONTRAST 0xA408 #define TAG_SATURATION 0xA409 #define TAG_SHARPNESS 0xA40A #define TAG_DEVICE_SETTING_DESCRIPTION 0xA40B #define TAG_SUBJECT_DISTANCE_RANGE 0xA40C #define TAG_IMAGE_UNIQUE_ID 0xA420 /* Olympus specific tags */ #define TAG_OLYMPUS_SPECIALMODE 0x0200 #define TAG_OLYMPUS_JPEGQUAL 0x0201 #define TAG_OLYMPUS_MACRO 0x0202 #define TAG_OLYMPUS_DIGIZOOM 0x0204 #define TAG_OLYMPUS_SOFTWARERELEASE 0x0207 #define TAG_OLYMPUS_PICTINFO 0x0208 #define TAG_OLYMPUS_CAMERAID 0x0209 /* end Olympus specific tags */ /* Internal */ #define TAG_NONE -1 /* note that -1 <> 0xFFFF */ #define TAG_COMPUTED_VALUE -2 #define TAG_END_OF_LIST 0xFFFD /* Values for TAG_PHOTOMETRIC_INTERPRETATION */ #define PMI_BLACK_IS_ZERO 0 #define PMI_WHITE_IS_ZERO 1 #define PMI_RGB 2 #define PMI_PALETTE_COLOR 3 #define PMI_TRANSPARENCY_MASK 4 #define PMI_SEPARATED 5 #define PMI_YCBCR 6 #define PMI_CIELAB 8 /* }}} */ /* {{{ TabTable[] */ typedef const struct { unsigned short Tag; char *Desc; } tag_info_type; typedef tag_info_type tag_info_array[]; typedef tag_info_type *tag_table_type; #define TAG_TABLE_END \ {TAG_NONE, "No tag value"},\ {TAG_COMPUTED_VALUE, "Computed value"},\ {TAG_END_OF_LIST, ""} /* Important for exif_get_tagname() IF value != "" function result is != false */ static tag_info_array tag_table_IFD = { { 0x000B, "ACDComment"}, { 0x00FE, "NewSubFile"}, /* better name it 'ImageType' ? */ { 0x00FF, "SubFile"}, { 0x0100, "ImageWidth"}, { 0x0101, "ImageLength"}, { 0x0102, "BitsPerSample"}, { 0x0103, "Compression"}, { 0x0106, "PhotometricInterpretation"}, { 0x010A, "FillOrder"}, { 0x010D, "DocumentName"}, { 0x010E, "ImageDescription"}, { 0x010F, "Make"}, { 0x0110, "Model"}, { 0x0111, "StripOffsets"}, { 0x0112, "Orientation"}, { 0x0115, "SamplesPerPixel"}, { 0x0116, "RowsPerStrip"}, { 0x0117, "StripByteCounts"}, { 0x0118, "MinSampleValue"}, { 0x0119, "MaxSampleValue"}, { 0x011A, "XResolution"}, { 0x011B, "YResolution"}, { 0x011C, "PlanarConfiguration"}, { 0x011D, "PageName"}, { 0x011E, "XPosition"}, { 0x011F, "YPosition"}, { 0x0120, "FreeOffsets"}, { 0x0121, "FreeByteCounts"}, { 0x0122, "GrayResponseUnit"}, { 0x0123, "GrayResponseCurve"}, { 0x0124, "T4Options"}, { 0x0125, "T6Options"}, { 0x0128, "ResolutionUnit"}, { 0x0129, "PageNumber"}, { 0x012D, "TransferFunction"}, { 0x0131, "Software"}, { 0x0132, "DateTime"}, { 0x013B, "Artist"}, { 0x013C, "HostComputer"}, { 0x013D, "Predictor"}, { 0x013E, "WhitePoint"}, { 0x013F, "PrimaryChromaticities"}, { 0x0140, "ColorMap"}, { 0x0141, "HalfToneHints"}, { 0x0142, "TileWidth"}, { 0x0143, "TileLength"}, { 0x0144, "TileOffsets"}, { 0x0145, "TileByteCounts"}, { 0x014A, "SubIFD"}, { 0x014C, "InkSet"}, { 0x014D, "InkNames"}, { 0x014E, "NumberOfInks"}, { 0x0150, "DotRange"}, { 0x0151, "TargetPrinter"}, { 0x0152, "ExtraSample"}, { 0x0153, "SampleFormat"}, { 0x0154, "SMinSampleValue"}, { 0x0155, "SMaxSampleValue"}, { 0x0156, "TransferRange"}, { 0x0157, "ClipPath"}, { 0x0158, "XClipPathUnits"}, { 0x0159, "YClipPathUnits"}, { 0x015A, "Indexed"}, { 0x015B, "JPEGTables"}, { 0x015F, "OPIProxy"}, { 0x0200, "JPEGProc"}, { 0x0201, "JPEGInterchangeFormat"}, { 0x0202, "JPEGInterchangeFormatLength"}, { 0x0203, "JPEGRestartInterval"}, { 0x0205, "JPEGLosslessPredictors"}, { 0x0206, "JPEGPointTransforms"}, { 0x0207, "JPEGQTables"}, { 0x0208, "JPEGDCTables"}, { 0x0209, "JPEGACTables"}, { 0x0211, "YCbCrCoefficients"}, { 0x0212, "YCbCrSubSampling"}, { 0x0213, "YCbCrPositioning"}, { 0x0214, "ReferenceBlackWhite"}, { 0x02BC, "ExtensibleMetadataPlatform"}, /* XAP: Extensible Authoring Publishing, obsoleted by XMP: Extensible Metadata Platform */ { 0x0301, "Gamma"}, { 0x0302, "ICCProfileDescriptor"}, { 0x0303, "SRGBRenderingIntent"}, { 0x0320, "ImageTitle"}, { 0x5001, "ResolutionXUnit"}, { 0x5002, "ResolutionYUnit"}, { 0x5003, "ResolutionXLengthUnit"}, { 0x5004, "ResolutionYLengthUnit"}, { 0x5005, "PrintFlags"}, { 0x5006, "PrintFlagsVersion"}, { 0x5007, "PrintFlagsCrop"}, { 0x5008, "PrintFlagsBleedWidth"}, { 0x5009, "PrintFlagsBleedWidthScale"}, { 0x500A, "HalftoneLPI"}, { 0x500B, "HalftoneLPIUnit"}, { 0x500C, "HalftoneDegree"}, { 0x500D, "HalftoneShape"}, { 0x500E, "HalftoneMisc"}, { 0x500F, "HalftoneScreen"}, { 0x5010, "JPEGQuality"}, { 0x5011, "GridSize"}, { 0x5012, "ThumbnailFormat"}, { 0x5013, "ThumbnailWidth"}, { 0x5014, "ThumbnailHeight"}, { 0x5015, "ThumbnailColorDepth"}, { 0x5016, "ThumbnailPlanes"}, { 0x5017, "ThumbnailRawBytes"}, { 0x5018, "ThumbnailSize"}, { 0x5019, "ThumbnailCompressedSize"}, { 0x501A, "ColorTransferFunction"}, { 0x501B, "ThumbnailData"}, { 0x5020, "ThumbnailImageWidth"}, { 0x5021, "ThumbnailImageHeight"}, { 0x5022, "ThumbnailBitsPerSample"}, { 0x5023, "ThumbnailCompression"}, { 0x5024, "ThumbnailPhotometricInterp"}, { 0x5025, "ThumbnailImageDescription"}, { 0x5026, "ThumbnailEquipMake"}, { 0x5027, "ThumbnailEquipModel"}, { 0x5028, "ThumbnailStripOffsets"}, { 0x5029, "ThumbnailOrientation"}, { 0x502A, "ThumbnailSamplesPerPixel"}, { 0x502B, "ThumbnailRowsPerStrip"}, { 0x502C, "ThumbnailStripBytesCount"}, { 0x502D, "ThumbnailResolutionX"}, { 0x502E, "ThumbnailResolutionY"}, { 0x502F, "ThumbnailPlanarConfig"}, { 0x5030, "ThumbnailResolutionUnit"}, { 0x5031, "ThumbnailTransferFunction"}, { 0x5032, "ThumbnailSoftwareUsed"}, { 0x5033, "ThumbnailDateTime"}, { 0x5034, "ThumbnailArtist"}, { 0x5035, "ThumbnailWhitePoint"}, { 0x5036, "ThumbnailPrimaryChromaticities"}, { 0x5037, "ThumbnailYCbCrCoefficients"}, { 0x5038, "ThumbnailYCbCrSubsampling"}, { 0x5039, "ThumbnailYCbCrPositioning"}, { 0x503A, "ThumbnailRefBlackWhite"}, { 0x503B, "ThumbnailCopyRight"}, { 0x5090, "LuminanceTable"}, { 0x5091, "ChrominanceTable"}, { 0x5100, "FrameDelay"}, { 0x5101, "LoopCount"}, { 0x5110, "PixelUnit"}, { 0x5111, "PixelPerUnitX"}, { 0x5112, "PixelPerUnitY"}, { 0x5113, "PaletteHistogram"}, { 0x1000, "RelatedImageFileFormat"}, { 0x800D, "ImageID"}, { 0x80E3, "Matteing"}, /* obsoleted by ExtraSamples */ { 0x80E4, "DataType"}, /* obsoleted by SampleFormat */ { 0x80E5, "ImageDepth"}, { 0x80E6, "TileDepth"}, { 0x828D, "CFARepeatPatternDim"}, { 0x828E, "CFAPattern"}, { 0x828F, "BatteryLevel"}, { 0x8298, "Copyright"}, { 0x829A, "ExposureTime"}, { 0x829D, "FNumber"}, { 0x83BB, "IPTC/NAA"}, { 0x84E3, "IT8RasterPadding"}, { 0x84E5, "IT8ColorTable"}, { 0x8649, "ImageResourceInformation"}, /* PhotoShop */ { 0x8769, "Exif_IFD_Pointer"}, { 0x8773, "ICC_Profile"}, { 0x8822, "ExposureProgram"}, { 0x8824, "SpectralSensity"}, { 0x8828, "OECF"}, { 0x8825, "GPS_IFD_Pointer"}, { 0x8827, "ISOSpeedRatings"}, { 0x8828, "OECF"}, { 0x9000, "ExifVersion"}, { 0x9003, "DateTimeOriginal"}, { 0x9004, "DateTimeDigitized"}, { 0x9101, "ComponentsConfiguration"}, { 0x9102, "CompressedBitsPerPixel"}, { 0x9201, "ShutterSpeedValue"}, { 0x9202, "ApertureValue"}, { 0x9203, "BrightnessValue"}, { 0x9204, "ExposureBiasValue"}, { 0x9205, "MaxApertureValue"}, { 0x9206, "SubjectDistance"}, { 0x9207, "MeteringMode"}, { 0x9208, "LightSource"}, { 0x9209, "Flash"}, { 0x920A, "FocalLength"}, { 0x920B, "FlashEnergy"}, /* 0xA20B in JPEG */ { 0x920C, "SpatialFrequencyResponse"}, /* 0xA20C - - */ { 0x920D, "Noise"}, { 0x920E, "FocalPlaneXResolution"}, /* 0xA20E - - */ { 0x920F, "FocalPlaneYResolution"}, /* 0xA20F - - */ { 0x9210, "FocalPlaneResolutionUnit"}, /* 0xA210 - - */ { 0x9211, "ImageNumber"}, { 0x9212, "SecurityClassification"}, { 0x9213, "ImageHistory"}, { 0x9214, "SubjectLocation"}, /* 0xA214 - - */ { 0x9215, "ExposureIndex"}, /* 0xA215 - - */ { 0x9216, "TIFF/EPStandardID"}, { 0x9217, "SensingMethod"}, /* 0xA217 - - */ { 0x923F, "StoNits"}, { 0x927C, "MakerNote"}, { 0x9286, "UserComment"}, { 0x9290, "SubSecTime"}, { 0x9291, "SubSecTimeOriginal"}, { 0x9292, "SubSecTimeDigitized"}, { 0x935C, "ImageSourceData"}, /* "Adobe Photoshop Document Data Block": 8BIM... */ { 0x9c9b, "Title" }, /* Win XP specific, Unicode */ { 0x9c9c, "Comments" }, /* Win XP specific, Unicode */ { 0x9c9d, "Author" }, /* Win XP specific, Unicode */ { 0x9c9e, "Keywords" }, /* Win XP specific, Unicode */ { 0x9c9f, "Subject" }, /* Win XP specific, Unicode, not to be confused with SubjectDistance and SubjectLocation */ { 0xA000, "FlashPixVersion"}, { 0xA001, "ColorSpace"}, { 0xA002, "ExifImageWidth"}, { 0xA003, "ExifImageLength"}, { 0xA004, "RelatedSoundFile"}, { 0xA005, "InteroperabilityOffset"}, { 0xA20B, "FlashEnergy"}, /* 0x920B in TIFF/EP */ { 0xA20C, "SpatialFrequencyResponse"}, /* 0x920C - - */ { 0xA20D, "Noise"}, { 0xA20E, "FocalPlaneXResolution"}, /* 0x920E - - */ { 0xA20F, "FocalPlaneYResolution"}, /* 0x920F - - */ { 0xA210, "FocalPlaneResolutionUnit"}, /* 0x9210 - - */ { 0xA211, "ImageNumber"}, { 0xA212, "SecurityClassification"}, { 0xA213, "ImageHistory"}, { 0xA214, "SubjectLocation"}, /* 0x9214 - - */ { 0xA215, "ExposureIndex"}, /* 0x9215 - - */ { 0xA216, "TIFF/EPStandardID"}, { 0xA217, "SensingMethod"}, /* 0x9217 - - */ { 0xA300, "FileSource"}, { 0xA301, "SceneType"}, { 0xA302, "CFAPattern"}, { 0xA401, "CustomRendered"}, { 0xA402, "ExposureMode"}, { 0xA403, "WhiteBalance"}, { 0xA404, "DigitalZoomRatio"}, { 0xA405, "FocalLengthIn35mmFilm"}, { 0xA406, "SceneCaptureType"}, { 0xA407, "GainControl"}, { 0xA408, "Contrast"}, { 0xA409, "Saturation"}, { 0xA40A, "Sharpness"}, { 0xA40B, "DeviceSettingDescription"}, { 0xA40C, "SubjectDistanceRange"}, { 0xA420, "ImageUniqueID"}, TAG_TABLE_END } ; static tag_info_array tag_table_GPS = { { 0x0000, "GPSVersion"}, { 0x0001, "GPSLatitudeRef"}, { 0x0002, "GPSLatitude"}, { 0x0003, "GPSLongitudeRef"}, { 0x0004, "GPSLongitude"}, { 0x0005, "GPSAltitudeRef"}, { 0x0006, "GPSAltitude"}, { 0x0007, "GPSTimeStamp"}, { 0x0008, "GPSSatellites"}, { 0x0009, "GPSStatus"}, { 0x000A, "GPSMeasureMode"}, { 0x000B, "GPSDOP"}, { 0x000C, "GPSSpeedRef"}, { 0x000D, "GPSSpeed"}, { 0x000E, "GPSTrackRef"}, { 0x000F, "GPSTrack"}, { 0x0010, "GPSImgDirectionRef"}, { 0x0011, "GPSImgDirection"}, { 0x0012, "GPSMapDatum"}, { 0x0013, "GPSDestLatitudeRef"}, { 0x0014, "GPSDestLatitude"}, { 0x0015, "GPSDestLongitudeRef"}, { 0x0016, "GPSDestLongitude"}, { 0x0017, "GPSDestBearingRef"}, { 0x0018, "GPSDestBearing"}, { 0x0019, "GPSDestDistanceRef"}, { 0x001A, "GPSDestDistance"}, { 0x001B, "GPSProcessingMode"}, { 0x001C, "GPSAreaInformation"}, { 0x001D, "GPSDateStamp"}, { 0x001E, "GPSDifferential"}, TAG_TABLE_END }; static tag_info_array tag_table_IOP = { { 0x0001, "InterOperabilityIndex"}, /* should be 'R98' or 'THM' */ { 0x0002, "InterOperabilityVersion"}, { 0x1000, "RelatedFileFormat"}, { 0x1001, "RelatedImageWidth"}, { 0x1002, "RelatedImageHeight"}, TAG_TABLE_END }; static tag_info_array tag_table_VND_CANON = { { 0x0001, "ModeArray"}, /* guess */ { 0x0004, "ImageInfo"}, /* guess */ { 0x0006, "ImageType"}, { 0x0007, "FirmwareVersion"}, { 0x0008, "ImageNumber"}, { 0x0009, "OwnerName"}, { 0x000C, "Camera"}, { 0x000F, "CustomFunctions"}, TAG_TABLE_END }; static tag_info_array tag_table_VND_CASIO = { { 0x0001, "RecordingMode"}, { 0x0002, "Quality"}, { 0x0003, "FocusingMode"}, { 0x0004, "FlashMode"}, { 0x0005, "FlashIntensity"}, { 0x0006, "ObjectDistance"}, { 0x0007, "WhiteBalance"}, { 0x000A, "DigitalZoom"}, { 0x000B, "Sharpness"}, { 0x000C, "Contrast"}, { 0x000D, "Saturation"}, { 0x0014, "CCDSensitivity"}, TAG_TABLE_END }; static tag_info_array tag_table_VND_FUJI = { { 0x0000, "Version"}, { 0x1000, "Quality"}, { 0x1001, "Sharpness"}, { 0x1002, "WhiteBalance"}, { 0x1003, "Color"}, { 0x1004, "Tone"}, { 0x1010, "FlashMode"}, { 0x1011, "FlashStrength"}, { 0x1020, "Macro"}, { 0x1021, "FocusMode"}, { 0x1030, "SlowSync"}, { 0x1031, "PictureMode"}, { 0x1100, "ContTake"}, { 0x1300, "BlurWarning"}, { 0x1301, "FocusWarning"}, { 0x1302, "AEWarning "}, TAG_TABLE_END }; static tag_info_array tag_table_VND_NIKON = { { 0x0003, "Quality"}, { 0x0004, "ColorMode"}, { 0x0005, "ImageAdjustment"}, { 0x0006, "CCDSensitivity"}, { 0x0007, "WhiteBalance"}, { 0x0008, "Focus"}, { 0x000a, "DigitalZoom"}, { 0x000b, "Converter"}, TAG_TABLE_END }; static tag_info_array tag_table_VND_NIKON_990 = { { 0x0001, "Version"}, { 0x0002, "ISOSetting"}, { 0x0003, "ColorMode"}, { 0x0004, "Quality"}, { 0x0005, "WhiteBalance"}, { 0x0006, "ImageSharpening"}, { 0x0007, "FocusMode"}, { 0x0008, "FlashSetting"}, { 0x000F, "ISOSelection"}, { 0x0080, "ImageAdjustment"}, { 0x0082, "AuxiliaryLens"}, { 0x0085, "ManualFocusDistance"}, { 0x0086, "DigitalZoom"}, { 0x0088, "AFFocusPosition"}, { 0x0010, "DataDump"}, TAG_TABLE_END }; static tag_info_array tag_table_VND_OLYMPUS = { { 0x0200, "SpecialMode"}, { 0x0201, "JPEGQuality"}, { 0x0202, "Macro"}, { 0x0204, "DigitalZoom"}, { 0x0207, "SoftwareRelease"}, { 0x0208, "PictureInfo"}, { 0x0209, "CameraId"}, { 0x0F00, "DataDump"}, TAG_TABLE_END }; typedef enum mn_byte_order_t { MN_ORDER_INTEL = 0, MN_ORDER_MOTOROLA = 1, MN_ORDER_NORMAL } mn_byte_order_t; typedef enum mn_offset_mode_t { MN_OFFSET_NORMAL, MN_OFFSET_MAKER, MN_OFFSET_GUESS } mn_offset_mode_t; typedef struct { tag_table_type tag_table; char * make; char * model; char * id_string; int id_string_len; int offset; mn_byte_order_t byte_order; mn_offset_mode_t offset_mode; } maker_note_type; static const maker_note_type maker_note_array[] = { { tag_table_VND_CANON, "Canon", NULL, NULL, 0, 0, MN_ORDER_INTEL, MN_OFFSET_GUESS}, /* { tag_table_VND_CANON, "Canon", NULL, NULL, 0, 0, MN_ORDER_NORMAL, MN_OFFSET_NORMAL},*/ { tag_table_VND_CASIO, "CASIO", NULL, NULL, 0, 0, MN_ORDER_MOTOROLA, MN_OFFSET_NORMAL}, { tag_table_VND_FUJI, "FUJIFILM", NULL, "FUJIFILM\x0C\x00\x00\x00", 12, 12, MN_ORDER_INTEL, MN_OFFSET_MAKER}, { tag_table_VND_NIKON, "NIKON", NULL, "Nikon\x00\x01\x00", 8, 8, MN_ORDER_NORMAL, MN_OFFSET_NORMAL}, { tag_table_VND_NIKON_990, "NIKON", NULL, NULL, 0, 0, MN_ORDER_NORMAL, MN_OFFSET_NORMAL}, { tag_table_VND_OLYMPUS, "OLYMPUS OPTICAL CO.,LTD", NULL, "OLYMP\x00\x01\x00", 8, 8, MN_ORDER_NORMAL, MN_OFFSET_NORMAL}, }; /* }}} */ /* {{{ exif_get_tagname Get headername for tag_num or NULL if not defined */ static char * exif_get_tagname(int tag_num, char *ret, int len, tag_table_type tag_table) { int i, t; char tmp[32]; for (i = 0; (t = tag_table[i].Tag) != TAG_END_OF_LIST; i++) { if (t == tag_num) { if (ret && len) { strlcpy(ret, tag_table[i].Desc, abs(len)); if (len < 0) { memset(ret + strlen(ret), ' ', -len - strlen(ret) - 1); ret[-len - 1] = '\0'; } return ret; } return tag_table[i].Desc; } } if (ret && len) { snprintf(tmp, sizeof(tmp), "UndefinedTag:0x%04X", tag_num); strlcpy(ret, tmp, abs(len)); if (len < 0) { memset(ret + strlen(ret), ' ', -len - strlen(ret) - 1); ret[-len - 1] = '\0'; } return ret; } return ""; } /* }}} */ /* {{{ exif_char_dump * Do not use! This is a debug function... */ #ifdef EXIF_DEBUG static unsigned char* exif_char_dump(unsigned char * addr, int len, int offset) { static unsigned char buf[4096+1]; static unsigned char tmp[20]; int c, i, p=0, n = 5+31; p += slprintf(buf+p, sizeof(buf)-p, "\nDump Len: %08X (%d)", len, len); if (len) { for(i=0; i=32 ? c : '.'; tmp[(i%16)+1] = '\0'; } else { p += slprintf(buf+p, sizeof(buf)-p, " "); } if (i%16==15) { p += slprintf(buf+p, sizeof(buf)-p, " %s", tmp); if (i>=len) { break; } } } } buf[sizeof(buf)-1] = '\0'; return buf; } #endif /* }}} */ /* {{{ php_jpg_get16 Get 16 bits motorola order (always) for jpeg header stuff. */ static int php_jpg_get16(void *value) { return (((uchar *)value)[0] << 8) | ((uchar *)value)[1]; } /* }}} */ /* {{{ php_ifd_get16u * Convert a 16 bit unsigned value from file's native byte order */ static int php_ifd_get16u(void *value, int motorola_intel) { if (motorola_intel) { return (((uchar *)value)[0] << 8) | ((uchar *)value)[1]; } else { return (((uchar *)value)[1] << 8) | ((uchar *)value)[0]; } } /* }}} */ /* {{{ php_ifd_get16s * Convert a 16 bit signed value from file's native byte order */ static signed short php_ifd_get16s(void *value, int motorola_intel) { return (signed short)php_ifd_get16u(value, motorola_intel); } /* }}} */ /* {{{ php_ifd_get32s * Convert a 32 bit signed value from file's native byte order */ static int php_ifd_get32s(void *value, int motorola_intel) { if (motorola_intel) { return (((char *)value)[0] << 24) | (((uchar *)value)[1] << 16) | (((uchar *)value)[2] << 8 ) | (((uchar *)value)[3] ); } else { return (((char *)value)[3] << 24) | (((uchar *)value)[2] << 16) | (((uchar *)value)[1] << 8 ) | (((uchar *)value)[0] ); } } /* }}} */ /* {{{ php_ifd_get32u * Write 32 bit unsigned value to data */ static unsigned php_ifd_get32u(void *value, int motorola_intel) { return (unsigned)php_ifd_get32s(value, motorola_intel) & 0xffffffff; } /* }}} */ /* {{{ php_ifd_set16u * Write 16 bit unsigned value to data */ static void php_ifd_set16u(char *data, unsigned int value, int motorola_intel) { if (motorola_intel) { data[0] = (value & 0xFF00) >> 8; data[1] = (value & 0x00FF); } else { data[1] = (value & 0xFF00) >> 8; data[0] = (value & 0x00FF); } } /* }}} */ /* {{{ php_ifd_set32u * Convert a 32 bit unsigned value from file's native byte order */ static void php_ifd_set32u(char *data, size_t value, int motorola_intel) { if (motorola_intel) { data[0] = (value & 0xFF000000) >> 24; data[1] = (value & 0x00FF0000) >> 16; data[2] = (value & 0x0000FF00) >> 8; data[3] = (value & 0x000000FF); } else { data[3] = (value & 0xFF000000) >> 24; data[2] = (value & 0x00FF0000) >> 16; data[1] = (value & 0x0000FF00) >> 8; data[0] = (value & 0x000000FF); } } /* }}} */ #ifdef EXIF_DEBUG char * exif_dump_data(int *dump_free, int format, int components, int length, int motorola_intel, char *value_ptr) /* {{{ */ { char *dump; int len; *dump_free = 0; if (format == TAG_FMT_STRING) { return value_ptr ? value_ptr : ""; } if (format == TAG_FMT_UNDEFINED) { return "\n"; } if (format == TAG_FMT_IFD) { return ""; } if (format == TAG_FMT_SINGLE || format == TAG_FMT_DOUBLE) { return ""; } *dump_free = 1; if (components > 1) { len = spprintf(&dump, 0, "(%d,%d) {", components, length); } else { len = spprintf(&dump, 0, "{"); } while(components > 0) { switch(format) { case TAG_FMT_BYTE: case TAG_FMT_UNDEFINED: case TAG_FMT_STRING: case TAG_FMT_SBYTE: dump = erealloc(dump, len + 4 + 1); snprintf(dump + len, 4 + 1, "0x%02X", *value_ptr); len += 4; value_ptr++; break; case TAG_FMT_USHORT: case TAG_FMT_SSHORT: dump = erealloc(dump, len + 6 + 1); snprintf(dump + len, 6 + 1, "0x%04X", php_ifd_get16s(value_ptr, motorola_intel)); len += 6; value_ptr += 2; break; case TAG_FMT_ULONG: case TAG_FMT_SLONG: dump = erealloc(dump, len + 6 + 1); snprintf(dump + len, 6 + 1, "0x%04X", php_ifd_get32s(value_ptr, motorola_intel)); len += 6; value_ptr += 4; break; case TAG_FMT_URATIONAL: case TAG_FMT_SRATIONAL: dump = erealloc(dump, len + 13 + 1); snprintf(dump + len, 13 + 1, "0x%04X/0x%04X", php_ifd_get32s(value_ptr, motorola_intel), php_ifd_get32s(value_ptr+4, motorola_intel)); len += 13; value_ptr += 8; break; } if (components > 0) { dump = erealloc(dump, len + 2 + 1); snprintf(dump + len, 2 + 1, ", "); len += 2; components--; } else{ break; } } dump = erealloc(dump, len + 1 + 1); snprintf(dump + len, 1 + 1, "}"); return dump; } /* }}} */ #endif /* {{{ exif_convert_any_format * Evaluate number, be it int, rational, or float from directory. */ static double exif_convert_any_format(void *value, int format, int motorola_intel) { int s_den; unsigned u_den; switch(format) { case TAG_FMT_SBYTE: return *(signed char *)value; case TAG_FMT_BYTE: return *(uchar *)value; case TAG_FMT_USHORT: return php_ifd_get16u(value, motorola_intel); case TAG_FMT_ULONG: return php_ifd_get32u(value, motorola_intel); case TAG_FMT_URATIONAL: u_den = php_ifd_get32u(4+(char *)value, motorola_intel); if (u_den == 0) { return 0; } else { return (double)php_ifd_get32u(value, motorola_intel) / u_den; } case TAG_FMT_SRATIONAL: s_den = php_ifd_get32s(4+(char *)value, motorola_intel); if (s_den == 0) { return 0; } else { return (double)php_ifd_get32s(value, motorola_intel) / s_den; } case TAG_FMT_SSHORT: return (signed short)php_ifd_get16u(value, motorola_intel); case TAG_FMT_SLONG: return php_ifd_get32s(value, motorola_intel); /* Not sure if this is correct (never seen float used in Exif format) */ case TAG_FMT_SINGLE: #ifdef EXIF_DEBUG php_error_docref(NULL, E_NOTICE, "Found value of type single"); #endif return (double)*(float *)value; case TAG_FMT_DOUBLE: #ifdef EXIF_DEBUG php_error_docref(NULL, E_NOTICE, "Found value of type double"); #endif return *(double *)value; } return 0; } /* }}} */ /* {{{ exif_convert_any_to_int * Evaluate number, be it int, rational, or float from directory. */ static size_t exif_convert_any_to_int(void *value, int format, int motorola_intel) { int s_den; unsigned u_den; switch(format) { case TAG_FMT_SBYTE: return *(signed char *)value; case TAG_FMT_BYTE: return *(uchar *)value; case TAG_FMT_USHORT: return php_ifd_get16u(value, motorola_intel); case TAG_FMT_ULONG: return php_ifd_get32u(value, motorola_intel); case TAG_FMT_URATIONAL: u_den = php_ifd_get32u(4+(char *)value, motorola_intel); if (u_den == 0) { return 0; } else { return php_ifd_get32u(value, motorola_intel) / u_den; } case TAG_FMT_SRATIONAL: s_den = php_ifd_get32s(4+(char *)value, motorola_intel); if (s_den == 0) { return 0; } else { return (size_t)((double)php_ifd_get32s(value, motorola_intel) / s_den); } case TAG_FMT_SSHORT: return php_ifd_get16u(value, motorola_intel); case TAG_FMT_SLONG: return php_ifd_get32s(value, motorola_intel); /* Not sure if this is correct (never seen float used in Exif format) */ case TAG_FMT_SINGLE: #ifdef EXIF_DEBUG php_error_docref(NULL, E_NOTICE, "Found value of type single"); #endif return (size_t)*(float *)value; case TAG_FMT_DOUBLE: #ifdef EXIF_DEBUG php_error_docref(NULL, E_NOTICE, "Found value of type double"); #endif return (size_t)*(double *)value; } return 0; } /* }}} */ /* {{{ struct image_info_value, image_info_list */ #ifndef WORD #define WORD unsigned short #endif #ifndef DWORD #define DWORD unsigned int #endif typedef struct { int num; int den; } signed_rational; typedef struct { unsigned int num; unsigned int den; } unsigned_rational; typedef union _image_info_value { char *s; unsigned u; int i; float f; double d; signed_rational sr; unsigned_rational ur; union _image_info_value *list; } image_info_value; typedef struct { WORD tag; WORD format; DWORD length; DWORD dummy; /* value ptr of tiff directory entry */ char *name; image_info_value value; } image_info_data; typedef struct { int count; image_info_data *list; } image_info_list; /* }}} */ /* {{{ exif_get_sectionname Returns the name of a section */ #define SECTION_FILE 0 #define SECTION_COMPUTED 1 #define SECTION_ANY_TAG 2 #define SECTION_IFD0 3 #define SECTION_THUMBNAIL 4 #define SECTION_COMMENT 5 #define SECTION_APP0 6 #define SECTION_EXIF 7 #define SECTION_FPIX 8 #define SECTION_GPS 9 #define SECTION_INTEROP 10 #define SECTION_APP12 11 #define SECTION_WINXP 12 #define SECTION_MAKERNOTE 13 #define SECTION_COUNT 14 #define FOUND_FILE (1<2) sections[len-2] = '\0'; return sections; } /* }}} */ /* {{{ struct image_info_type This structure stores Exif header image elements in a simple manner Used to store camera data as extracted from the various ways that it can be stored in a nexif header */ typedef struct { int type; size_t size; uchar *data; } file_section; typedef struct { int count; file_section *list; } file_section_list; typedef struct { image_filetype filetype; size_t width, height; size_t size; size_t offset; char *data; } thumbnail_data; typedef struct { char *value; size_t size; int tag; } xp_field_type; typedef struct { int count; xp_field_type *list; } xp_field_list; /* This structure is used to store a section of a Jpeg file. */ typedef struct { php_stream *infile; char *FileName; time_t FileDateTime; size_t FileSize; image_filetype FileType; int Height, Width; int IsColor; char *make; char *model; float ApertureFNumber; float ExposureTime; double FocalplaneUnits; float CCDWidth; double FocalplaneXRes; size_t ExifImageWidth; float FocalLength; float Distance; int motorola_intel; /* 1 Motorola; 0 Intel */ char *UserComment; int UserCommentLength; char *UserCommentEncoding; char *encode_unicode; char *decode_unicode_be; char *decode_unicode_le; char *encode_jis; char *decode_jis_be; char *decode_jis_le; char *Copyright;/* EXIF standard defines Copyright as " [ '\0' ] ['\0']" */ char *CopyrightPhotographer; char *CopyrightEditor; xp_field_list xp_fields; thumbnail_data Thumbnail; /* other */ int sections_found; /* FOUND_ */ image_info_list info_list[SECTION_COUNT]; /* for parsing */ int read_thumbnail; int read_all; int ifd_nesting_level; /* internal */ file_section_list file; } image_info_type; /* }}} */ /* {{{ exif_error_docref */ static void exif_error_docref(const char *docref EXIFERR_DC, const image_info_type *ImageInfo, int type, const char *format, ...) { va_list args; va_start(args, format); #ifdef EXIF_DEBUG { char *buf; spprintf(&buf, 0, "%s(%d): %s", _file, _line, format); php_verror(docref, ImageInfo->FileName?ImageInfo->FileName:"", type, buf, args); efree(buf); } #else php_verror(docref, ImageInfo->FileName?ImageInfo->FileName:"", type, format, args); #endif va_end(args); } /* }}} */ /* {{{ jpeg_sof_info */ typedef struct { int bits_per_sample; size_t width; size_t height; int num_components; } jpeg_sof_info; /* }}} */ /* {{{ exif_file_sections_add Add a file_section to image_info returns the used block or -1. if size>0 and data == NULL buffer of size is allocated */ static int exif_file_sections_add(image_info_type *ImageInfo, int type, size_t size, uchar *data) { file_section *tmp; int count = ImageInfo->file.count; tmp = safe_erealloc(ImageInfo->file.list, (count+1), sizeof(file_section), 0); ImageInfo->file.list = tmp; ImageInfo->file.list[count].type = 0xFFFF; ImageInfo->file.list[count].data = NULL; ImageInfo->file.list[count].size = 0; ImageInfo->file.count = count+1; if (!size) { data = NULL; } else if (data == NULL) { data = safe_emalloc(size, 1, 0); } ImageInfo->file.list[count].type = type; ImageInfo->file.list[count].data = data; ImageInfo->file.list[count].size = size; return count; } /* }}} */ /* {{{ exif_file_sections_realloc Reallocate a file section returns 0 on success and -1 on failure */ static int exif_file_sections_realloc(image_info_type *ImageInfo, int section_index, size_t size) { void *tmp; /* This is not a malloc/realloc check. It is a plausibility check for the * function parameters (requirements engineering). */ if (section_index >= ImageInfo->file.count) { EXIF_ERRLOG_FSREALLOC(ImageInfo) return -1; } tmp = safe_erealloc(ImageInfo->file.list[section_index].data, 1, size, 0); ImageInfo->file.list[section_index].data = tmp; ImageInfo->file.list[section_index].size = size; return 0; } /* }}} */ /* {{{ exif_file_section_free Discard all file_sections in ImageInfo */ static int exif_file_sections_free(image_info_type *ImageInfo) { int i; if (ImageInfo->file.count) { for (i=0; ifile.count; i++) { EFREE_IF(ImageInfo->file.list[i].data); } } EFREE_IF(ImageInfo->file.list); ImageInfo->file.count = 0; return TRUE; } /* }}} */ /* {{{ exif_iif_add_value Add a value to image_info */ static void exif_iif_add_value(image_info_type *image_info, int section_index, char *name, int tag, int format, int length, void* value, int motorola_intel) { size_t idex; void *vptr; image_info_value *info_value; image_info_data *info_data; image_info_data *list; if (length < 0) { return; } list = safe_erealloc(image_info->info_list[section_index].list, (image_info->info_list[section_index].count+1), sizeof(image_info_data), 0); image_info->info_list[section_index].list = list; info_data = &image_info->info_list[section_index].list[image_info->info_list[section_index].count]; memset(info_data, 0, sizeof(image_info_data)); info_data->tag = tag; info_data->format = format; info_data->length = length; info_data->name = estrdup(name); info_value = &info_data->value; switch (format) { case TAG_FMT_STRING: if (value) { length = php_strnlen(value, length); info_value->s = estrndup(value, length); info_data->length = length; } else { info_data->length = 0; info_value->s = estrdup(""); } break; default: /* Standard says more types possible but skip them... * but allow users to handle data if they know how to * So not return but use type UNDEFINED * return; */ info_data->tag = TAG_FMT_UNDEFINED;/* otherwise not freed from memory */ case TAG_FMT_SBYTE: case TAG_FMT_BYTE: /* in contrast to strings bytes do not need to allocate buffer for NULL if length==0 */ if (!length) break; case TAG_FMT_UNDEFINED: if (value) { if (tag == TAG_MAKER_NOTE) { length = (int) php_strnlen(value, length); } /* do not recompute length here */ info_value->s = estrndup(value, length); info_data->length = length; } else { info_data->length = 0; info_value->s = estrdup(""); } break; case TAG_FMT_USHORT: case TAG_FMT_ULONG: case TAG_FMT_URATIONAL: case TAG_FMT_SSHORT: case TAG_FMT_SLONG: case TAG_FMT_SRATIONAL: case TAG_FMT_SINGLE: case TAG_FMT_DOUBLE: if (length==0) { break; } else if (length>1) { info_value->list = safe_emalloc(length, sizeof(image_info_value), 0); } else { info_value = &info_data->value; } for (idex=0,vptr=value; idex<(size_t)length; idex++,vptr=(char *) vptr + php_tiff_bytes_per_format[format]) { if (length>1) { info_value = &info_data->value.list[idex]; } switch (format) { case TAG_FMT_USHORT: info_value->u = php_ifd_get16u(vptr, motorola_intel); break; case TAG_FMT_ULONG: info_value->u = php_ifd_get32u(vptr, motorola_intel); break; case TAG_FMT_URATIONAL: info_value->ur.num = php_ifd_get32u(vptr, motorola_intel); info_value->ur.den = php_ifd_get32u(4+(char *)vptr, motorola_intel); break; case TAG_FMT_SSHORT: info_value->i = php_ifd_get16s(vptr, motorola_intel); break; case TAG_FMT_SLONG: info_value->i = php_ifd_get32s(vptr, motorola_intel); break; case TAG_FMT_SRATIONAL: info_value->sr.num = php_ifd_get32u(vptr, motorola_intel); info_value->sr.den = php_ifd_get32u(4+(char *)vptr, motorola_intel); break; case TAG_FMT_SINGLE: #ifdef EXIF_DEBUG php_error_docref(NULL, E_WARNING, "Found value of type single"); #endif info_value->f = *(float *)value; case TAG_FMT_DOUBLE: #ifdef EXIF_DEBUG php_error_docref(NULL, E_WARNING, "Found value of type double"); #endif info_value->d = *(double *)value; break; } } } image_info->sections_found |= 1<info_list[section_index].count++; } /* }}} */ /* {{{ exif_iif_add_tag Add a tag from IFD to image_info */ static void exif_iif_add_tag(image_info_type *image_info, int section_index, char *name, int tag, int format, size_t length, void* value) { exif_iif_add_value(image_info, section_index, name, tag, format, (int)length, value, image_info->motorola_intel); } /* }}} */ /* {{{ exif_iif_add_int Add an int value to image_info */ static void exif_iif_add_int(image_info_type *image_info, int section_index, char *name, int value) { image_info_data *info_data; image_info_data *list; list = safe_erealloc(image_info->info_list[section_index].list, (image_info->info_list[section_index].count+1), sizeof(image_info_data), 0); image_info->info_list[section_index].list = list; info_data = &image_info->info_list[section_index].list[image_info->info_list[section_index].count]; info_data->tag = TAG_NONE; info_data->format = TAG_FMT_SLONG; info_data->length = 1; info_data->name = estrdup(name); info_data->value.i = value; image_info->sections_found |= 1<info_list[section_index].count++; } /* }}} */ /* {{{ exif_iif_add_str Add a string value to image_info MUST BE NUL TERMINATED */ static void exif_iif_add_str(image_info_type *image_info, int section_index, char *name, char *value) { image_info_data *info_data; image_info_data *list; if (value) { list = safe_erealloc(image_info->info_list[section_index].list, (image_info->info_list[section_index].count+1), sizeof(image_info_data), 0); image_info->info_list[section_index].list = list; info_data = &image_info->info_list[section_index].list[image_info->info_list[section_index].count]; info_data->tag = TAG_NONE; info_data->format = TAG_FMT_STRING; info_data->length = 1; info_data->name = estrdup(name); info_data->value.s = estrdup(value); image_info->sections_found |= 1<info_list[section_index].count++; } } /* }}} */ /* {{{ exif_iif_add_fmt Add a format string value to image_info MUST BE NUL TERMINATED */ static void exif_iif_add_fmt(image_info_type *image_info, int section_index, char *name, char *value, ...) { char *tmp; va_list arglist; va_start(arglist, value); if (value) { vspprintf(&tmp, 0, value, arglist); exif_iif_add_str(image_info, section_index, name, tmp); efree(tmp); } va_end(arglist); } /* }}} */ /* {{{ exif_iif_add_str Add a string value to image_info MUST BE NUL TERMINATED */ static void exif_iif_add_buffer(image_info_type *image_info, int section_index, char *name, int length, char *value) { image_info_data *info_data; image_info_data *list; if (value) { list = safe_erealloc(image_info->info_list[section_index].list, (image_info->info_list[section_index].count+1), sizeof(image_info_data), 0); image_info->info_list[section_index].list = list; info_data = &image_info->info_list[section_index].list[image_info->info_list[section_index].count]; info_data->tag = TAG_NONE; info_data->format = TAG_FMT_UNDEFINED; info_data->length = length; info_data->name = estrdup(name); info_data->value.s = safe_emalloc(length, 1, 1); memcpy(info_data->value.s, value, length); info_data->value.s[length] = 0; image_info->sections_found |= 1<info_list[section_index].count++; } } /* }}} */ /* {{{ exif_iif_free Free memory allocated for image_info */ static void exif_iif_free(image_info_type *image_info, int section_index) { int i; void *f; /* faster */ if (image_info->info_list[section_index].count) { for (i=0; i < image_info->info_list[section_index].count; i++) { if ((f=image_info->info_list[section_index].list[i].name) != NULL) { efree(f); } switch(image_info->info_list[section_index].list[i].format) { case TAG_FMT_SBYTE: case TAG_FMT_BYTE: /* in contrast to strings bytes do not need to allocate buffer for NULL if length==0 */ if (image_info->info_list[section_index].list[i].length<1) break; default: case TAG_FMT_UNDEFINED: case TAG_FMT_STRING: if ((f=image_info->info_list[section_index].list[i].value.s) != NULL) { efree(f); } break; case TAG_FMT_USHORT: case TAG_FMT_ULONG: case TAG_FMT_URATIONAL: case TAG_FMT_SSHORT: case TAG_FMT_SLONG: case TAG_FMT_SRATIONAL: case TAG_FMT_SINGLE: case TAG_FMT_DOUBLE: /* nothing to do here */ if (image_info->info_list[section_index].list[i].length > 1) { if ((f=image_info->info_list[section_index].list[i].value.list) != NULL) { efree(f); } } break; } } } EFREE_IF(image_info->info_list[section_index].list); } /* }}} */ /* {{{ add_assoc_image_info * Add image_info to associative array value. */ static void add_assoc_image_info(zval *value, int sub_array, image_info_type *image_info, int section_index) { char buffer[64], *val, *name, uname[64]; int i, ap, l, b, idx=0, unknown=0; #ifdef EXIF_DEBUG int info_tag; #endif image_info_value *info_value; image_info_data *info_data; zval tmpi, array; #ifdef EXIF_DEBUG /* php_error_docref(NULL, E_NOTICE, "Adding %d infos from section %s", image_info->info_list[section_index].count, exif_get_sectionname(section_index));*/ #endif if (image_info->info_list[section_index].count) { if (sub_array) { array_init(&tmpi); } else { ZVAL_COPY_VALUE(&tmpi, value); } for(i=0; iinfo_list[section_index].count; i++) { info_data = &image_info->info_list[section_index].list[i]; #ifdef EXIF_DEBUG info_tag = info_data->tag; /* conversion */ #endif info_value = &info_data->value; if (!(name = info_data->name)) { snprintf(uname, sizeof(uname), "%d", unknown++); name = uname; } #ifdef EXIF_DEBUG /* php_error_docref(NULL, E_NOTICE, "Adding infos: tag(0x%04X,%12s,L=0x%04X): %s", info_tag, exif_get_tagname(info_tag, buffer, -12, exif_get_tag_table(section_index)), info_data->length, info_data->format==TAG_FMT_STRING?(info_value&&info_value->s?info_value->s:""):exif_get_tagformat(info_data->format));*/ #endif if (info_data->length==0) { add_assoc_null(&tmpi, name); } else { switch (info_data->format) { default: /* Standard says more types possible but skip them... * but allow users to handle data if they know how to * So not return but use type UNDEFINED * return; */ case TAG_FMT_BYTE: case TAG_FMT_SBYTE: case TAG_FMT_UNDEFINED: if (!info_value->s) { add_assoc_stringl(&tmpi, name, "", 0); } else { add_assoc_stringl(&tmpi, name, info_value->s, info_data->length); } break; case TAG_FMT_STRING: if (!(val = info_value->s)) { val = ""; } if (section_index==SECTION_COMMENT) { add_index_string(&tmpi, idx++, val); } else { add_assoc_string(&tmpi, name, val); } break; case TAG_FMT_URATIONAL: case TAG_FMT_SRATIONAL: /*case TAG_FMT_BYTE: case TAG_FMT_SBYTE:*/ case TAG_FMT_USHORT: case TAG_FMT_SSHORT: case TAG_FMT_SINGLE: case TAG_FMT_DOUBLE: case TAG_FMT_ULONG: case TAG_FMT_SLONG: /* now the rest, first see if it becomes an array */ if ((l = info_data->length) > 1) { array_init(&array); } for(ap=0; ap1) { info_value = &info_data->value.list[ap]; } switch (info_data->format) { case TAG_FMT_BYTE: if (l>1) { info_value = &info_data->value; for (b=0;bs[b])); } break; } case TAG_FMT_USHORT: case TAG_FMT_ULONG: if (l==1) { add_assoc_long(&tmpi, name, (int)info_value->u); } else { add_index_long(&array, ap, (int)info_value->u); } break; case TAG_FMT_URATIONAL: snprintf(buffer, sizeof(buffer), "%i/%i", info_value->ur.num, info_value->ur.den); if (l==1) { add_assoc_string(&tmpi, name, buffer); } else { add_index_string(&array, ap, buffer); } break; case TAG_FMT_SBYTE: if (l>1) { info_value = &info_data->value; for (b=0;bs[b]); } break; } case TAG_FMT_SSHORT: case TAG_FMT_SLONG: if (l==1) { add_assoc_long(&tmpi, name, info_value->i); } else { add_index_long(&array, ap, info_value->i); } break; case TAG_FMT_SRATIONAL: snprintf(buffer, sizeof(buffer), "%i/%i", info_value->sr.num, info_value->sr.den); if (l==1) { add_assoc_string(&tmpi, name, buffer); } else { add_index_string(&array, ap, buffer); } break; case TAG_FMT_SINGLE: if (l==1) { add_assoc_double(&tmpi, name, info_value->f); } else { add_index_double(&array, ap, info_value->f); } break; case TAG_FMT_DOUBLE: if (l==1) { add_assoc_double(&tmpi, name, info_value->d); } else { add_index_double(&array, ap, info_value->d); } break; } info_value = &info_data->value.list[ap]; } if (l>1) { add_assoc_zval(&tmpi, name, &array); } break; } } } if (sub_array) { add_assoc_zval(value, exif_get_sectionname(section_index), &tmpi); } } } /* }}} */ /* {{{ Markers JPEG markers consist of one or more 0xFF bytes, followed by a marker code byte (which is not an FF). Here are the marker codes of interest in this program. (See jdmarker.c for a more complete list.) */ #define M_TEM 0x01 /* temp for arithmetic coding */ #define M_RES 0x02 /* reserved */ #define M_SOF0 0xC0 /* Start Of Frame N */ #define M_SOF1 0xC1 /* N indicates which compression process */ #define M_SOF2 0xC2 /* Only SOF0-SOF2 are now in common use */ #define M_SOF3 0xC3 #define M_DHT 0xC4 #define M_SOF5 0xC5 /* NB: codes C4 and CC are NOT SOF markers */ #define M_SOF6 0xC6 #define M_SOF7 0xC7 #define M_JPEG 0x08 /* reserved for extensions */ #define M_SOF9 0xC9 #define M_SOF10 0xCA #define M_SOF11 0xCB #define M_DAC 0xCC /* arithmetic table */ #define M_SOF13 0xCD #define M_SOF14 0xCE #define M_SOF15 0xCF #define M_RST0 0xD0 /* restart segment */ #define M_RST1 0xD1 #define M_RST2 0xD2 #define M_RST3 0xD3 #define M_RST4 0xD4 #define M_RST5 0xD5 #define M_RST6 0xD6 #define M_RST7 0xD7 #define M_SOI 0xD8 /* Start Of Image (beginning of datastream) */ #define M_EOI 0xD9 /* End Of Image (end of datastream) */ #define M_SOS 0xDA /* Start Of Scan (begins compressed data) */ #define M_DQT 0xDB #define M_DNL 0xDC #define M_DRI 0xDD #define M_DHP 0xDE #define M_EXP 0xDF #define M_APP0 0xE0 /* JPEG: 'JFIFF' AND (additional 'JFXX') */ #define M_EXIF 0xE1 /* Exif Attribute Information */ #define M_APP2 0xE2 /* Flash Pix Extension Data? */ #define M_APP3 0xE3 #define M_APP4 0xE4 #define M_APP5 0xE5 #define M_APP6 0xE6 #define M_APP7 0xE7 #define M_APP8 0xE8 #define M_APP9 0xE9 #define M_APP10 0xEA #define M_APP11 0xEB #define M_APP12 0xEC #define M_APP13 0xED /* IPTC International Press Telecommunications Council */ #define M_APP14 0xEE /* Software, Copyright? */ #define M_APP15 0xEF #define M_JPG0 0xF0 #define M_JPG1 0xF1 #define M_JPG2 0xF2 #define M_JPG3 0xF3 #define M_JPG4 0xF4 #define M_JPG5 0xF5 #define M_JPG6 0xF6 #define M_JPG7 0xF7 #define M_JPG8 0xF8 #define M_JPG9 0xF9 #define M_JPG10 0xFA #define M_JPG11 0xFB #define M_JPG12 0xFC #define M_JPG13 0xFD #define M_COM 0xFE /* COMment */ #define M_PSEUDO 0x123 /* Extra value. */ /* }}} */ /* {{{ jpeg2000 markers */ /* Markers x30 - x3F do not have a segment */ /* Markers x00, x01, xFE, xC0 - xDF ISO/IEC 10918-1 -> M_ */ /* Markers xF0 - xF7 ISO/IEC 10918-3 */ /* Markers xF7 - xF8 ISO/IEC 14495-1 */ /* XY=Main/Tile-header:(R:required, N:not_allowed, O:optional, L:last_marker) */ #define JC_SOC 0x4F /* NN, Start of codestream */ #define JC_SIZ 0x51 /* RN, Image and tile size */ #define JC_COD 0x52 /* RO, Codeing style defaulte */ #define JC_COC 0x53 /* OO, Coding style component */ #define JC_TLM 0x55 /* ON, Tile part length main header */ #define JC_PLM 0x57 /* ON, Packet length main header */ #define JC_PLT 0x58 /* NO, Packet length tile part header */ #define JC_QCD 0x5C /* RO, Quantization default */ #define JC_QCC 0x5D /* OO, Quantization component */ #define JC_RGN 0x5E /* OO, Region of interest */ #define JC_POD 0x5F /* OO, Progression order default */ #define JC_PPM 0x60 /* ON, Packed packet headers main header */ #define JC_PPT 0x61 /* NO, Packet packet headers tile part header */ #define JC_CME 0x64 /* OO, Comment: "LL E " E=0:binary, E=1:ascii */ #define JC_SOT 0x90 /* NR, Start of tile */ #define JC_SOP 0x91 /* NO, Start of packeter default */ #define JC_EPH 0x92 /* NO, End of packet header */ #define JC_SOD 0x93 /* NL, Start of data */ #define JC_EOC 0xD9 /* NN, End of codestream */ /* }}} */ /* {{{ exif_process_COM Process a COM marker. We want to print out the marker contents as legible text; we must guard against random junk and varying newline representations. */ static void exif_process_COM (image_info_type *image_info, char *value, size_t length) { exif_iif_add_tag(image_info, SECTION_COMMENT, "Comment", TAG_COMPUTED_VALUE, TAG_FMT_STRING, length-2, value+2); } /* }}} */ /* {{{ exif_process_CME Process a CME marker. We want to print out the marker contents as legible text; we must guard against random junk and varying newline representations. */ #ifdef EXIF_JPEG2000 static void exif_process_CME (image_info_type *image_info, char *value, size_t length) { if (length>3) { switch(value[2]) { case 0: exif_iif_add_tag(image_info, SECTION_COMMENT, "Comment", TAG_COMPUTED_VALUE, TAG_FMT_UNDEFINED, length, value); break; case 1: exif_iif_add_tag(image_info, SECTION_COMMENT, "Comment", TAG_COMPUTED_VALUE, TAG_FMT_STRING, length, value); break; default: php_error_docref(NULL, E_NOTICE, "Undefined JPEG2000 comment encoding"); break; } } else { exif_iif_add_tag(image_info, SECTION_COMMENT, "Comment", TAG_COMPUTED_VALUE, TAG_FMT_UNDEFINED, 0, NULL); php_error_docref(NULL, E_NOTICE, "JPEG2000 comment section too small"); } } #endif /* }}} */ /* {{{ exif_process_SOFn * Process a SOFn marker. This is useful for the image dimensions */ static void exif_process_SOFn (uchar *Data, int marker, jpeg_sof_info *result) { /* 0xFF SOSn SectLen(2) Bits(1) Height(2) Width(2) Channels(1) 3*Channels (1) */ result->bits_per_sample = Data[2]; result->height = php_jpg_get16(Data+3); result->width = php_jpg_get16(Data+5); result->num_components = Data[7]; /* switch (marker) { case M_SOF0: process = "Baseline"; break; case M_SOF1: process = "Extended sequential"; break; case M_SOF2: process = "Progressive"; break; case M_SOF3: process = "Lossless"; break; case M_SOF5: process = "Differential sequential"; break; case M_SOF6: process = "Differential progressive"; break; case M_SOF7: process = "Differential lossless"; break; case M_SOF9: process = "Extended sequential, arithmetic coding"; break; case M_SOF10: process = "Progressive, arithmetic coding"; break; case M_SOF11: process = "Lossless, arithmetic coding"; break; case M_SOF13: process = "Differential sequential, arithmetic coding"; break; case M_SOF14: process = "Differential progressive, arithmetic coding"; break; case M_SOF15: process = "Differential lossless, arithmetic coding"; break; default: process = "Unknown"; break; }*/ } /* }}} */ /* forward declarations */ static int exif_process_IFD_in_JPEG(image_info_type *ImageInfo, char *dir_start, char *offset_base, size_t IFDlength, size_t displacement, int section_index); static int exif_process_IFD_TAG( image_info_type *ImageInfo, char *dir_entry, char *offset_base, size_t IFDlength, size_t displacement, int section_index, int ReadNextIFD, tag_table_type tag_table); /* {{{ exif_get_markername Get name of marker */ #ifdef EXIF_DEBUG static char * exif_get_markername(int marker) { switch(marker) { case 0xC0: return "SOF0"; case 0xC1: return "SOF1"; case 0xC2: return "SOF2"; case 0xC3: return "SOF3"; case 0xC4: return "DHT"; case 0xC5: return "SOF5"; case 0xC6: return "SOF6"; case 0xC7: return "SOF7"; case 0xC9: return "SOF9"; case 0xCA: return "SOF10"; case 0xCB: return "SOF11"; case 0xCD: return "SOF13"; case 0xCE: return "SOF14"; case 0xCF: return "SOF15"; case 0xD8: return "SOI"; case 0xD9: return "EOI"; case 0xDA: return "SOS"; case 0xDB: return "DQT"; case 0xDC: return "DNL"; case 0xDD: return "DRI"; case 0xDE: return "DHP"; case 0xDF: return "EXP"; case 0xE0: return "APP0"; case 0xE1: return "EXIF"; case 0xE2: return "FPIX"; case 0xE3: return "APP3"; case 0xE4: return "APP4"; case 0xE5: return "APP5"; case 0xE6: return "APP6"; case 0xE7: return "APP7"; case 0xE8: return "APP8"; case 0xE9: return "APP9"; case 0xEA: return "APP10"; case 0xEB: return "APP11"; case 0xEC: return "APP12"; case 0xED: return "APP13"; case 0xEE: return "APP14"; case 0xEF: return "APP15"; case 0xF0: return "JPG0"; case 0xFD: return "JPG13"; case 0xFE: return "COM"; case 0x01: return "TEM"; } return "Unknown"; } #endif /* }}} */ /* {{{ proto string exif_tagname(int index) Get headername for index or false if not defined */ PHP_FUNCTION(exif_tagname) { zend_long tag; char *szTemp; if (zend_parse_parameters(ZEND_NUM_ARGS(), "l", &tag) == FAILURE) { return; } szTemp = exif_get_tagname(tag, NULL, 0, tag_table_IFD); if (tag < 0 || !szTemp || !szTemp[0]) { RETURN_FALSE; } RETURN_STRING(szTemp) } /* }}} */ /* {{{ exif_ifd_make_value * Create a value for an ifd from an info_data pointer */ static void* exif_ifd_make_value(image_info_data *info_data, int motorola_intel) { size_t byte_count; char *value_ptr, *data_ptr; size_t i; image_info_value *info_value; byte_count = php_tiff_bytes_per_format[info_data->format] * info_data->length; value_ptr = safe_emalloc(max(byte_count, 4), 1, 0); memset(value_ptr, 0, 4); if (!info_data->length) { return value_ptr; } if (info_data->format == TAG_FMT_UNDEFINED || info_data->format == TAG_FMT_STRING || (byte_count>1 && (info_data->format == TAG_FMT_BYTE || info_data->format == TAG_FMT_SBYTE)) ) { memmove(value_ptr, info_data->value.s, byte_count); return value_ptr; } else if (info_data->format == TAG_FMT_BYTE) { *value_ptr = info_data->value.u; return value_ptr; } else if (info_data->format == TAG_FMT_SBYTE) { *value_ptr = info_data->value.i; return value_ptr; } else { data_ptr = value_ptr; for(i=0; ilength; i++) { if (info_data->length==1) { info_value = &info_data->value; } else { info_value = &info_data->value.list[i]; } switch(info_data->format) { case TAG_FMT_USHORT: php_ifd_set16u(data_ptr, info_value->u, motorola_intel); data_ptr += 2; break; case TAG_FMT_ULONG: php_ifd_set32u(data_ptr, info_value->u, motorola_intel); data_ptr += 4; break; case TAG_FMT_SSHORT: php_ifd_set16u(data_ptr, info_value->i, motorola_intel); data_ptr += 2; break; case TAG_FMT_SLONG: php_ifd_set32u(data_ptr, info_value->i, motorola_intel); data_ptr += 4; break; case TAG_FMT_URATIONAL: php_ifd_set32u(data_ptr, info_value->sr.num, motorola_intel); php_ifd_set32u(data_ptr+4, info_value->sr.den, motorola_intel); data_ptr += 8; break; case TAG_FMT_SRATIONAL: php_ifd_set32u(data_ptr, info_value->ur.num, motorola_intel); php_ifd_set32u(data_ptr+4, info_value->ur.den, motorola_intel); data_ptr += 8; break; case TAG_FMT_SINGLE: memmove(data_ptr, &info_value->f, 4); data_ptr += 4; break; case TAG_FMT_DOUBLE: memmove(data_ptr, &info_value->d, 8); data_ptr += 8; break; } } } return value_ptr; } /* }}} */ /* {{{ exif_thumbnail_build * Check and build thumbnail */ static void exif_thumbnail_build(image_info_type *ImageInfo) { size_t new_size, new_move, new_value; char *new_data; void *value_ptr; int i, byte_count; image_info_list *info_list; image_info_data *info_data; #ifdef EXIF_DEBUG char tagname[64]; #endif if (!ImageInfo->read_thumbnail || !ImageInfo->Thumbnail.offset || !ImageInfo->Thumbnail.size) { return; /* ignore this call */ } #ifdef EXIF_DEBUG exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: filetype = %d", ImageInfo->Thumbnail.filetype); #endif switch(ImageInfo->Thumbnail.filetype) { default: case IMAGE_FILETYPE_JPEG: /* done */ break; case IMAGE_FILETYPE_TIFF_II: case IMAGE_FILETYPE_TIFF_MM: info_list = &ImageInfo->info_list[SECTION_THUMBNAIL]; new_size = 8 + 2 + info_list->count * 12 + 4; #ifdef EXIF_DEBUG exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: size of signature + directory(%d): 0x%02X", info_list->count, new_size); #endif new_value= new_size; /* offset for ifd values outside ifd directory */ for (i=0; icount; i++) { info_data = &info_list->list[i]; byte_count = php_tiff_bytes_per_format[info_data->format] * info_data->length; if (byte_count > 4) { new_size += byte_count; } } new_move = new_size; new_data = safe_erealloc(ImageInfo->Thumbnail.data, 1, ImageInfo->Thumbnail.size, new_size); ImageInfo->Thumbnail.data = new_data; memmove(ImageInfo->Thumbnail.data + new_move, ImageInfo->Thumbnail.data, ImageInfo->Thumbnail.size); ImageInfo->Thumbnail.size += new_size; /* fill in data */ if (ImageInfo->motorola_intel) { memmove(new_data, "MM\x00\x2a\x00\x00\x00\x08", 8); } else { memmove(new_data, "II\x2a\x00\x08\x00\x00\x00", 8); } new_data += 8; php_ifd_set16u(new_data, info_list->count, ImageInfo->motorola_intel); new_data += 2; for (i=0; icount; i++) { info_data = &info_list->list[i]; byte_count = php_tiff_bytes_per_format[info_data->format] * info_data->length; #ifdef EXIF_DEBUG exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: process tag(x%04X=%s): %s%s (%d bytes)", info_data->tag, exif_get_tagname(info_data->tag, tagname, -12, tag_table_IFD), (info_data->length>1)&&info_data->format!=TAG_FMT_UNDEFINED&&info_data->format!=TAG_FMT_STRING?"ARRAY OF ":"", exif_get_tagformat(info_data->format), byte_count); #endif if (info_data->tag==TAG_STRIP_OFFSETS || info_data->tag==TAG_JPEG_INTERCHANGE_FORMAT) { php_ifd_set16u(new_data + 0, info_data->tag, ImageInfo->motorola_intel); php_ifd_set16u(new_data + 2, TAG_FMT_ULONG, ImageInfo->motorola_intel); php_ifd_set32u(new_data + 4, 1, ImageInfo->motorola_intel); php_ifd_set32u(new_data + 8, new_move, ImageInfo->motorola_intel); } else { php_ifd_set16u(new_data + 0, info_data->tag, ImageInfo->motorola_intel); php_ifd_set16u(new_data + 2, info_data->format, ImageInfo->motorola_intel); php_ifd_set32u(new_data + 4, info_data->length, ImageInfo->motorola_intel); value_ptr = exif_ifd_make_value(info_data, ImageInfo->motorola_intel); if (byte_count <= 4) { memmove(new_data+8, value_ptr, 4); } else { php_ifd_set32u(new_data+8, new_value, ImageInfo->motorola_intel); #ifdef EXIF_DEBUG exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: writing with value offset: 0x%04X + 0x%02X", new_value, byte_count); #endif memmove(ImageInfo->Thumbnail.data+new_value, value_ptr, byte_count); new_value += byte_count; } efree(value_ptr); } new_data += 12; } memset(new_data, 0, 4); /* next ifd pointer */ #ifdef EXIF_DEBUG exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: created"); #endif break; } } /* }}} */ /* {{{ exif_thumbnail_extract * Grab the thumbnail, corrected */ static void exif_thumbnail_extract(image_info_type *ImageInfo, char *offset, size_t length) { if (ImageInfo->Thumbnail.data) { exif_error_docref("exif_read_data#error_mult_thumb" EXIFERR_CC, ImageInfo, E_WARNING, "Multiple possible thumbnails"); return; /* Should not happen */ } if (!ImageInfo->read_thumbnail) { return; /* ignore this call */ } /* according to exif2.1, the thumbnail is not supposed to be greater than 64K */ if (ImageInfo->Thumbnail.size >= 65536 || ImageInfo->Thumbnail.size <= 0 || ImageInfo->Thumbnail.offset <= 0 ) { exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Illegal thumbnail size/offset"); return; } /* Check to make sure we are not going to go past the ExifLength */ if ((ImageInfo->Thumbnail.offset + ImageInfo->Thumbnail.size) > length) { EXIF_ERRLOG_THUMBEOF(ImageInfo) return; } ImageInfo->Thumbnail.data = estrndup(offset + ImageInfo->Thumbnail.offset, ImageInfo->Thumbnail.size); exif_thumbnail_build(ImageInfo); } /* }}} */ /* {{{ exif_process_undefined * Copy a string/buffer in Exif header to a character string and return length of allocated buffer if any. */ static int exif_process_undefined(char **result, char *value, size_t byte_count) { /* we cannot use strlcpy - here the problem is that we have to copy NUL * chars up to byte_count, we also have to add a single NUL character to * force end of string. * estrndup does not return length */ if (byte_count) { (*result) = estrndup(value, byte_count); /* NULL @ byte_count!!! */ return byte_count+1; } return 0; } /* }}} */ /* {{{ exif_process_string_raw * Copy a string in Exif header to a character string returns length of allocated buffer if any. */ static int exif_process_string_raw(char **result, char *value, size_t byte_count) { /* we cannot use strlcpy - here the problem is that we have to copy NUL * chars up to byte_count, we also have to add a single NUL character to * force end of string. */ if (byte_count) { (*result) = safe_emalloc(byte_count, 1, 1); memcpy(*result, value, byte_count); (*result)[byte_count] = '\0'; return byte_count+1; } return 0; } /* }}} */ /* {{{ exif_process_string * Copy a string in Exif header to a character string and return length of allocated buffer if any. * In contrast to exif_process_string this function does always return a string buffer */ static int exif_process_string(char **result, char *value, size_t byte_count) { /* we cannot use strlcpy - here the problem is that we cannot use strlen to * determin length of string and we cannot use strlcpy with len=byte_count+1 * because then we might get into an EXCEPTION if we exceed an allocated * memory page...so we use php_strnlen in conjunction with memcpy and add the NUL * char. * estrdup would sometimes allocate more memory and does not return length */ if ((byte_count=php_strnlen(value, byte_count)) > 0) { return exif_process_undefined(result, value, byte_count); } (*result) = estrndup("", 1); /* force empty string */ return byte_count+1; } /* }}} */ /* {{{ exif_process_user_comment * Process UserComment in IFD. */ static int exif_process_user_comment(image_info_type *ImageInfo, char **pszInfoPtr, char **pszEncoding, char *szValuePtr, int ByteCount) { int a; char *decode; size_t len;; *pszEncoding = NULL; /* Copy the comment */ if (ByteCount>=8) { const zend_encoding *from, *to; if (!memcmp(szValuePtr, "UNICODE\0", 8)) { *pszEncoding = estrdup((const char*)szValuePtr); szValuePtr = szValuePtr+8; ByteCount -= 8; /* First try to detect BOM: ZERO WIDTH NOBREAK SPACE (FEFF 16) * since we have no encoding support for the BOM yet we skip that. */ if (!memcmp(szValuePtr, "\xFE\xFF", 2)) { decode = "UCS-2BE"; szValuePtr = szValuePtr+2; ByteCount -= 2; } else if (!memcmp(szValuePtr, "\xFF\xFE", 2)) { decode = "UCS-2LE"; szValuePtr = szValuePtr+2; ByteCount -= 2; } else if (ImageInfo->motorola_intel) { decode = ImageInfo->decode_unicode_be; } else { decode = ImageInfo->decode_unicode_le; } to = zend_multibyte_fetch_encoding(ImageInfo->encode_unicode); from = zend_multibyte_fetch_encoding(decode); /* XXX this will fail again if encoding_converter returns on error something different than SIZE_MAX */ if (!to || !from || zend_multibyte_encoding_converter( (unsigned char**)pszInfoPtr, &len, (unsigned char*)szValuePtr, ByteCount, to, from) == (size_t)-1) { len = exif_process_string_raw(pszInfoPtr, szValuePtr, ByteCount); } return len; } else if (!memcmp(szValuePtr, "ASCII\0\0\0", 8)) { *pszEncoding = estrdup((const char*)szValuePtr); szValuePtr = szValuePtr+8; ByteCount -= 8; } else if (!memcmp(szValuePtr, "JIS\0\0\0\0\0", 8)) { /* JIS should be tanslated to MB or we leave it to the user - leave it to the user */ *pszEncoding = estrdup((const char*)szValuePtr); szValuePtr = szValuePtr+8; ByteCount -= 8; /* XXX this will fail again if encoding_converter returns on error something different than SIZE_MAX */ to = zend_multibyte_fetch_encoding(ImageInfo->encode_jis); from = zend_multibyte_fetch_encoding(ImageInfo->motorola_intel ? ImageInfo->decode_jis_be : ImageInfo->decode_jis_le); if (!to || !from || zend_multibyte_encoding_converter( (unsigned char**)pszInfoPtr, &len, (unsigned char*)szValuePtr, ByteCount, to, from) == (size_t)-1) { len = exif_process_string_raw(pszInfoPtr, szValuePtr, ByteCount); } return len; } else if (!memcmp(szValuePtr, "\0\0\0\0\0\0\0\0", 8)) { /* 8 NULL means undefined and should be ASCII... */ *pszEncoding = estrdup("UNDEFINED"); szValuePtr = szValuePtr+8; ByteCount -= 8; } } /* Olympus has this padded with trailing spaces. Remove these first. */ if (ByteCount>0) { for (a=ByteCount-1;a && szValuePtr[a]==' ';a--) { (szValuePtr)[a] = '\0'; } } /* normal text without encoding */ exif_process_string(pszInfoPtr, szValuePtr, ByteCount); return strlen(*pszInfoPtr); } /* }}} */ /* {{{ exif_process_unicode * Process unicode field in IFD. */ static int exif_process_unicode(image_info_type *ImageInfo, xp_field_type *xp_field, int tag, char *szValuePtr, int ByteCount) { xp_field->tag = tag; xp_field->value = NULL; /* XXX this will fail again if encoding_converter returns on error something different than SIZE_MAX */ if (zend_multibyte_encoding_converter( (unsigned char**)&xp_field->value, &xp_field->size, (unsigned char*)szValuePtr, ByteCount, zend_multibyte_fetch_encoding(ImageInfo->encode_unicode), zend_multibyte_fetch_encoding(ImageInfo->motorola_intel ? ImageInfo->decode_unicode_be : ImageInfo->decode_unicode_le) ) == (size_t)-1) { xp_field->size = exif_process_string_raw(&xp_field->value, szValuePtr, ByteCount); } return xp_field->size; } /* }}} */ /* {{{ exif_process_IFD_in_MAKERNOTE * Process nested IFDs directories in Maker Note. */ static int exif_process_IFD_in_MAKERNOTE(image_info_type *ImageInfo, char * value_ptr, int value_len, char *offset_base, size_t IFDlength, size_t displacement) { size_t i; int de, section_index = SECTION_MAKERNOTE; int NumDirEntries, old_motorola_intel, offset_diff; const maker_note_type *maker_note; char *dir_start; for (i=0; i<=sizeof(maker_note_array)/sizeof(maker_note_type); i++) { if (i==sizeof(maker_note_array)/sizeof(maker_note_type)) { #ifdef EXIF_DEBUG exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "No maker note data found. Detected maker: %s (length = %d)", ImageInfo->make, strlen(ImageInfo->make)); #endif /* unknown manufacturer, not an error, use it as a string */ return TRUE; } maker_note = maker_note_array+i; /*exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "check (%s,%s)", maker_note->make?maker_note->make:"", maker_note->model?maker_note->model:"");*/ if (maker_note->make && (!ImageInfo->make || strcmp(maker_note->make, ImageInfo->make))) continue; if (maker_note->model && (!ImageInfo->model || strcmp(maker_note->model, ImageInfo->model))) continue; if (maker_note->id_string && strncmp(maker_note->id_string, value_ptr, maker_note->id_string_len)) continue; break; } if (maker_note->offset >= value_len) { /* Do not go past the value end */ exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "IFD data too short: 0x%04X offset 0x%04X", value_len, maker_note->offset); return FALSE; } dir_start = value_ptr + maker_note->offset; #ifdef EXIF_DEBUG exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process %s @x%04X + 0x%04X=%d: %s", exif_get_sectionname(section_index), (int)dir_start-(int)offset_base+maker_note->offset+displacement, value_len, value_len, exif_char_dump(value_ptr, value_len, (int)dir_start-(int)offset_base+maker_note->offset+displacement)); #endif ImageInfo->sections_found |= FOUND_MAKERNOTE; old_motorola_intel = ImageInfo->motorola_intel; switch (maker_note->byte_order) { case MN_ORDER_INTEL: ImageInfo->motorola_intel = 0; break; case MN_ORDER_MOTOROLA: ImageInfo->motorola_intel = 1; break; default: case MN_ORDER_NORMAL: break; } NumDirEntries = php_ifd_get16u(dir_start, ImageInfo->motorola_intel); switch (maker_note->offset_mode) { case MN_OFFSET_MAKER: offset_base = value_ptr; break; case MN_OFFSET_GUESS: if (maker_note->offset + 10 + 4 >= value_len) { /* Can not read dir_start+10 since it's beyond value end */ exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "IFD data too short: 0x%04X", value_len); return FALSE; } offset_diff = 2 + NumDirEntries*12 + 4 - php_ifd_get32u(dir_start+10, ImageInfo->motorola_intel); #ifdef EXIF_DEBUG exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Using automatic offset correction: 0x%04X", ((int)dir_start-(int)offset_base+maker_note->offset+displacement) + offset_diff); #endif if (offset_diff < 0 || offset_diff >= value_len ) { exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "IFD data bad offset: 0x%04X length 0x%04X", offset_diff, value_len); return FALSE; } offset_base = value_ptr + offset_diff; break; default: case MN_OFFSET_NORMAL: break; } if ((2+NumDirEntries*12) > value_len) { exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD size: 2 + 0x%04X*12 = 0x%04X > 0x%04X", NumDirEntries, 2+NumDirEntries*12, value_len); return FALSE; } for (de=0;detag_table)) { return FALSE; } } ImageInfo->motorola_intel = old_motorola_intel; /* NextDirOffset (must be NULL) = php_ifd_get32u(dir_start+2+12*de, ImageInfo->motorola_intel);*/ #ifdef EXIF_DEBUG exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Subsection %s done", exif_get_sectionname(SECTION_MAKERNOTE)); #endif return TRUE; } /* }}} */ /* {{{ exif_process_IFD_TAG * Process one of the nested IFDs directories. */ static int exif_process_IFD_TAG(image_info_type *ImageInfo, char *dir_entry, char *offset_base, size_t IFDlength, size_t displacement, int section_index, int ReadNextIFD, tag_table_type tag_table) { size_t length; int tag, format, components; char *value_ptr, tagname[64], cbuf[32], *outside=NULL; size_t byte_count, offset_val, fpos, fgot; int64_t byte_count_signed; xp_field_type *tmp_xp; #ifdef EXIF_DEBUG char *dump_data; int dump_free; #endif /* EXIF_DEBUG */ /* Protect against corrupt headers */ if (ImageInfo->ifd_nesting_level > MAX_IFD_NESTING_LEVEL) { exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "corrupt EXIF header: maximum directory nesting level reached"); return FALSE; } ImageInfo->ifd_nesting_level++; tag = php_ifd_get16u(dir_entry, ImageInfo->motorola_intel); format = php_ifd_get16u(dir_entry+2, ImageInfo->motorola_intel); components = php_ifd_get32u(dir_entry+4, ImageInfo->motorola_intel); if (!format || format > NUM_FORMATS) { /* (-1) catches illegal zero case as unsigned underflows to positive large. */ exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Process tag(x%04X=%s): Illegal format code 0x%04X, suppose BYTE", tag, exif_get_tagname(tag, tagname, -12, tag_table), format); format = TAG_FMT_BYTE; /*return TRUE;*/ } if (components < 0) { exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Process tag(x%04X=%s): Illegal components(%d)", tag, exif_get_tagname(tag, tagname, -12, tag_table), components); return FALSE; } byte_count_signed = (int64_t)components * php_tiff_bytes_per_format[format]; if (byte_count_signed < 0 || (byte_count_signed > INT32_MAX)) { exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Process tag(x%04X=%s): Illegal byte_count", tag, exif_get_tagname(tag, tagname, -12, tag_table)); return FALSE; } byte_count = (size_t)byte_count_signed; if (byte_count > 4) { offset_val = php_ifd_get32u(dir_entry+8, ImageInfo->motorola_intel); /* If its bigger than 4 bytes, the dir entry contains an offset. */ value_ptr = offset_base+offset_val; /* dir_entry is ImageInfo->file.list[sn].data+2+i*12 offset_base is ImageInfo->file.list[sn].data-dir_offset dir_entry - offset_base is dir_offset+2+i*12 */ if (byte_count > IFDlength || offset_val > IFDlength-byte_count || value_ptr < dir_entry || offset_val < (size_t)(dir_entry-offset_base)) { /* It is important to check for IMAGE_FILETYPE_TIFF * JPEG does not use absolute pointers instead its pointers are * relative to the start of the TIFF header in APP1 section. */ if (byte_count > ImageInfo->FileSize || offset_val>ImageInfo->FileSize-byte_count || (ImageInfo->FileType!=IMAGE_FILETYPE_TIFF_II && ImageInfo->FileType!=IMAGE_FILETYPE_TIFF_MM && ImageInfo->FileType!=IMAGE_FILETYPE_JPEG)) { if (value_ptr < dir_entry) { /* we can read this if offset_val > 0 */ /* some files have their values in other parts of the file */ exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Process tag(x%04X=%s): Illegal pointer offset(x%04X < x%04X)", tag, exif_get_tagname(tag, tagname, -12, tag_table), offset_val, dir_entry); } else { /* this is for sure not allowed */ /* exception are IFD pointers */ exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Process tag(x%04X=%s): Illegal pointer offset(x%04X + x%04X = x%04X > x%04X)", tag, exif_get_tagname(tag, tagname, -12, tag_table), offset_val, byte_count, offset_val+byte_count, IFDlength); } return FALSE; } if (byte_count>sizeof(cbuf)) { /* mark as outside range and get buffer */ value_ptr = safe_emalloc(byte_count, 1, 0); outside = value_ptr; } else { /* In most cases we only access a small range so * it is faster to use a static buffer there * BUT it offers also the possibility to have * pointers read without the need to free them * explicitley before returning. */ memset(&cbuf, 0, sizeof(cbuf)); value_ptr = cbuf; } fpos = php_stream_tell(ImageInfo->infile); php_stream_seek(ImageInfo->infile, displacement+offset_val, SEEK_SET); fgot = php_stream_tell(ImageInfo->infile); if (fgot!=displacement+offset_val) { EFREE_IF(outside); exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Wrong file pointer: 0x%08X != 0x%08X", fgot, displacement+offset_val); return FALSE; } fgot = php_stream_read(ImageInfo->infile, value_ptr, byte_count); php_stream_seek(ImageInfo->infile, fpos, SEEK_SET); if (fgotsections_found |= FOUND_ANY_TAG; #ifdef EXIF_DEBUG dump_data = exif_dump_data(&dump_free, format, components, length, ImageInfo->motorola_intel, value_ptr); exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process tag(x%04X=%s,@x%04X + x%04X(=%d)): %s%s %s", tag, exif_get_tagname(tag, tagname, -12, tag_table), offset_val+displacement, byte_count, byte_count, (components>1)&&format!=TAG_FMT_UNDEFINED&&format!=TAG_FMT_STRING?"ARRAY OF ":"", exif_get_tagformat(format), dump_data); if (dump_free) { efree(dump_data); } #endif if (section_index==SECTION_THUMBNAIL) { if (!ImageInfo->Thumbnail.data) { switch(tag) { case TAG_IMAGEWIDTH: case TAG_COMP_IMAGE_WIDTH: ImageInfo->Thumbnail.width = exif_convert_any_to_int(value_ptr, format, ImageInfo->motorola_intel); break; case TAG_IMAGEHEIGHT: case TAG_COMP_IMAGE_HEIGHT: ImageInfo->Thumbnail.height = exif_convert_any_to_int(value_ptr, format, ImageInfo->motorola_intel); break; case TAG_STRIP_OFFSETS: case TAG_JPEG_INTERCHANGE_FORMAT: /* accept both formats */ ImageInfo->Thumbnail.offset = exif_convert_any_to_int(value_ptr, format, ImageInfo->motorola_intel); break; case TAG_STRIP_BYTE_COUNTS: if (ImageInfo->FileType == IMAGE_FILETYPE_TIFF_II || ImageInfo->FileType == IMAGE_FILETYPE_TIFF_MM) { ImageInfo->Thumbnail.filetype = ImageInfo->FileType; } else { /* motorola is easier to read */ ImageInfo->Thumbnail.filetype = IMAGE_FILETYPE_TIFF_MM; } ImageInfo->Thumbnail.size = exif_convert_any_to_int(value_ptr, format, ImageInfo->motorola_intel); break; case TAG_JPEG_INTERCHANGE_FORMAT_LEN: if (ImageInfo->Thumbnail.filetype == IMAGE_FILETYPE_UNKNOWN) { ImageInfo->Thumbnail.filetype = IMAGE_FILETYPE_JPEG; ImageInfo->Thumbnail.size = exif_convert_any_to_int(value_ptr, format, ImageInfo->motorola_intel); } break; } } } else { if (section_index==SECTION_IFD0 || section_index==SECTION_EXIF) switch(tag) { case TAG_COPYRIGHT: /* check for " NUL NUL" */ if (byte_count>1 && (length=php_strnlen(value_ptr, byte_count)) > 0) { if (lengthCopyrightPhotographer = estrdup(value_ptr); ImageInfo->CopyrightEditor = estrndup(value_ptr+length+1, byte_count-length-1); spprintf(&ImageInfo->Copyright, 0, "%s, %s", ImageInfo->CopyrightPhotographer, ImageInfo->CopyrightEditor); /* format = TAG_FMT_UNDEFINED; this musn't be ASCII */ /* but we are not supposed to change this */ /* keep in mind that image_info does not store editor value */ } else { ImageInfo->Copyright = estrndup(value_ptr, byte_count); } } break; case TAG_USERCOMMENT: ImageInfo->UserCommentLength = exif_process_user_comment(ImageInfo, &(ImageInfo->UserComment), &(ImageInfo->UserCommentEncoding), value_ptr, byte_count); break; case TAG_XP_TITLE: case TAG_XP_COMMENTS: case TAG_XP_AUTHOR: case TAG_XP_KEYWORDS: case TAG_XP_SUBJECT: tmp_xp = (xp_field_type*)safe_erealloc(ImageInfo->xp_fields.list, (ImageInfo->xp_fields.count+1), sizeof(xp_field_type), 0); ImageInfo->sections_found |= FOUND_WINXP; ImageInfo->xp_fields.list = tmp_xp; ImageInfo->xp_fields.count++; exif_process_unicode(ImageInfo, &(ImageInfo->xp_fields.list[ImageInfo->xp_fields.count-1]), tag, value_ptr, byte_count); break; case TAG_FNUMBER: /* Simplest way of expressing aperture, so I trust it the most. (overwrite previously computed value if there is one) */ ImageInfo->ApertureFNumber = (float)exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel); break; case TAG_APERTURE: case TAG_MAX_APERTURE: /* More relevant info always comes earlier, so only use this field if we don't have appropriate aperture information yet. */ if (ImageInfo->ApertureFNumber == 0) { ImageInfo->ApertureFNumber = (float)exp(exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel)*log(2)*0.5); } break; case TAG_SHUTTERSPEED: /* More complicated way of expressing exposure time, so only use this value if we don't already have it from somewhere else. SHUTTERSPEED comes after EXPOSURE TIME */ if (ImageInfo->ExposureTime == 0) { ImageInfo->ExposureTime = (float)(1/exp(exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel)*log(2))); } break; case TAG_EXPOSURETIME: ImageInfo->ExposureTime = -1; break; case TAG_COMP_IMAGE_WIDTH: ImageInfo->ExifImageWidth = exif_convert_any_to_int(value_ptr, format, ImageInfo->motorola_intel); break; case TAG_FOCALPLANE_X_RES: ImageInfo->FocalplaneXRes = exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel); break; case TAG_SUBJECT_DISTANCE: /* Inidcates the distacne the autofocus camera is focused to. Tends to be less accurate as distance increases. */ ImageInfo->Distance = (float)exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel); break; case TAG_FOCALPLANE_RESOLUTION_UNIT: switch((int)exif_convert_any_format(value_ptr, format, ImageInfo->motorola_intel)) { case 1: ImageInfo->FocalplaneUnits = 25.4; break; /* inch */ case 2: /* According to the information I was using, 2 measn meters. But looking at the Cannon powershot's files, inches is the only sensible value. */ ImageInfo->FocalplaneUnits = 25.4; break; case 3: ImageInfo->FocalplaneUnits = 10; break; /* centimeter */ case 4: ImageInfo->FocalplaneUnits = 1; break; /* milimeter */ case 5: ImageInfo->FocalplaneUnits = .001; break; /* micrometer */ } break; case TAG_SUB_IFD: if (format==TAG_FMT_IFD) { /* If this is called we are either in a TIFFs thumbnail or a JPEG where we cannot handle it */ /* TIFF thumbnail: our data structure cannot store a thumbnail of a thumbnail */ /* JPEG do we have the data area and what to do with it */ exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Skip SUB IFD"); } break; case TAG_MAKE: ImageInfo->make = estrndup(value_ptr, byte_count); break; case TAG_MODEL: ImageInfo->model = estrndup(value_ptr, byte_count); break; case TAG_MAKER_NOTE: if (!exif_process_IFD_in_MAKERNOTE(ImageInfo, value_ptr, byte_count, offset_base, IFDlength, displacement)) { EFREE_IF(outside); return FALSE; } break; case TAG_EXIF_IFD_POINTER: case TAG_GPS_IFD_POINTER: case TAG_INTEROP_IFD_POINTER: if (ReadNextIFD) { char *Subdir_start; int sub_section_index = 0; switch(tag) { case TAG_EXIF_IFD_POINTER: #ifdef EXIF_DEBUG exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Found EXIF"); #endif ImageInfo->sections_found |= FOUND_EXIF; sub_section_index = SECTION_EXIF; break; case TAG_GPS_IFD_POINTER: #ifdef EXIF_DEBUG exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Found GPS"); #endif ImageInfo->sections_found |= FOUND_GPS; sub_section_index = SECTION_GPS; break; case TAG_INTEROP_IFD_POINTER: #ifdef EXIF_DEBUG exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Found INTEROPERABILITY"); #endif ImageInfo->sections_found |= FOUND_INTEROP; sub_section_index = SECTION_INTEROP; break; } Subdir_start = offset_base + php_ifd_get32u(value_ptr, ImageInfo->motorola_intel); if (Subdir_start < offset_base || Subdir_start > offset_base+IFDlength) { exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD Pointer"); return FALSE; } if (!exif_process_IFD_in_JPEG(ImageInfo, Subdir_start, offset_base, IFDlength, displacement, sub_section_index)) { return FALSE; } #ifdef EXIF_DEBUG exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Subsection %s done", exif_get_sectionname(sub_section_index)); #endif } } } exif_iif_add_tag(ImageInfo, section_index, exif_get_tagname(tag, tagname, sizeof(tagname), tag_table), tag, format, components, value_ptr); EFREE_IF(outside); return TRUE; } /* }}} */ /* {{{ exif_process_IFD_in_JPEG * Process one of the nested IFDs directories. */ static int exif_process_IFD_in_JPEG(image_info_type *ImageInfo, char *dir_start, char *offset_base, size_t IFDlength, size_t displacement, int section_index) { int de; int NumDirEntries; int NextDirOffset; #ifdef EXIF_DEBUG exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process %s (x%04X(=%d))", exif_get_sectionname(section_index), IFDlength, IFDlength); #endif ImageInfo->sections_found |= FOUND_IFD0; if ((dir_start + 2) >= (offset_base+IFDlength)) { exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD size"); return FALSE; } NumDirEntries = php_ifd_get16u(dir_start, ImageInfo->motorola_intel); if ((dir_start+2+NumDirEntries*12) > (offset_base+IFDlength)) { exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD size: x%04X + 2 + x%04X*12 = x%04X > x%04X", (int)((size_t)dir_start+2-(size_t)offset_base), NumDirEntries, (int)((size_t)dir_start+2+NumDirEntries*12-(size_t)offset_base), IFDlength); return FALSE; } for (de=0;de= (offset_base+IFDlength)) { exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD size"); return FALSE; } NextDirOffset = php_ifd_get32u(dir_start+2+12*de, ImageInfo->motorola_intel); if (NextDirOffset) { /* the next line seems false but here IFDlength means length of all IFDs */ if (offset_base + NextDirOffset < offset_base || offset_base + NextDirOffset > offset_base+IFDlength) { exif_error_docref("exif_read_data#error_ifd" EXIFERR_CC, ImageInfo, E_WARNING, "Illegal IFD offset"); return FALSE; } /* That is the IFD for the first thumbnail */ #ifdef EXIF_DEBUG exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Expect next IFD to be thumbnail"); #endif if (exif_process_IFD_in_JPEG(ImageInfo, offset_base + NextDirOffset, offset_base, IFDlength, displacement, SECTION_THUMBNAIL)) { #ifdef EXIF_DEBUG exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail size: 0x%04X", ImageInfo->Thumbnail.size); #endif if (ImageInfo->Thumbnail.filetype != IMAGE_FILETYPE_UNKNOWN && ImageInfo->Thumbnail.size && ImageInfo->Thumbnail.offset && ImageInfo->read_thumbnail ) { exif_thumbnail_extract(ImageInfo, offset_base, IFDlength); } return TRUE; } else { return FALSE; } } return TRUE; } /* }}} */ /* {{{ exif_process_TIFF_in_JPEG Process a TIFF header in a JPEG file */ static void exif_process_TIFF_in_JPEG(image_info_type *ImageInfo, char *CharBuf, size_t length, size_t displacement) { unsigned exif_value_2a, offset_of_ifd; /* set the thumbnail stuff to nothing so we can test to see if they get set up */ if (memcmp(CharBuf, "II", 2) == 0) { ImageInfo->motorola_intel = 0; } else if (memcmp(CharBuf, "MM", 2) == 0) { ImageInfo->motorola_intel = 1; } else { exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid TIFF alignment marker"); return; } /* Check the next two values for correctness. */ if (length < 8) { exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid TIFF start (1)"); return; } exif_value_2a = php_ifd_get16u(CharBuf+2, ImageInfo->motorola_intel); offset_of_ifd = php_ifd_get32u(CharBuf+4, ImageInfo->motorola_intel); if (exif_value_2a != 0x2a || offset_of_ifd < 0x08) { exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid TIFF start (1)"); return; } if (offset_of_ifd > length) { exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid IFD start"); return; } ImageInfo->sections_found |= FOUND_IFD0; /* First directory starts at offset 8. Offsets starts at 0. */ exif_process_IFD_in_JPEG(ImageInfo, CharBuf+offset_of_ifd, CharBuf, length/*-14*/, displacement, SECTION_IFD0); #ifdef EXIF_DEBUG exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process TIFF in JPEG done"); #endif /* Compute the CCD width, in milimeters. */ if (ImageInfo->FocalplaneXRes != 0) { ImageInfo->CCDWidth = (float)(ImageInfo->ExifImageWidth * ImageInfo->FocalplaneUnits / ImageInfo->FocalplaneXRes); } } /* }}} */ /* {{{ exif_process_APP1 Process an JPEG APP1 block marker Describes all the drivel that most digital cameras include... */ static void exif_process_APP1(image_info_type *ImageInfo, char *CharBuf, size_t length, size_t displacement) { /* Check the APP1 for Exif Identifier Code */ static const uchar ExifHeader[] = {0x45, 0x78, 0x69, 0x66, 0x00, 0x00}; if (length <= 8 || memcmp(CharBuf+2, ExifHeader, 6)) { exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Incorrect APP1 Exif Identifier Code"); return; } exif_process_TIFF_in_JPEG(ImageInfo, CharBuf + 8, length - 8, displacement+8); #ifdef EXIF_DEBUG exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process APP1/EXIF done"); #endif } /* }}} */ /* {{{ exif_process_APP12 Process an JPEG APP12 block marker used by OLYMPUS */ static void exif_process_APP12(image_info_type *ImageInfo, char *buffer, size_t length) { size_t l1, l2=0; if ((l1 = php_strnlen(buffer+2, length-2)) > 0) { exif_iif_add_tag(ImageInfo, SECTION_APP12, "Company", TAG_NONE, TAG_FMT_STRING, l1, buffer+2); if (length > 2+l1+1) { l2 = php_strnlen(buffer+2+l1+1, length-2-l1-1); exif_iif_add_tag(ImageInfo, SECTION_APP12, "Info", TAG_NONE, TAG_FMT_STRING, l2, buffer+2+l1+1); } } #ifdef EXIF_DEBUG exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process section APP12 with l1=%d, l2=%d done", l1, l2); #endif } /* }}} */ /* {{{ exif_scan_JPEG_header * Parse the marker stream until SOS or EOI is seen; */ static int exif_scan_JPEG_header(image_info_type *ImageInfo) { int section, sn; int marker = 0, last_marker = M_PSEUDO, comment_correction=1; unsigned int ll, lh; uchar *Data; size_t fpos, size, got, itemlen; jpeg_sof_info sof_info; for(section=0;;section++) { #ifdef EXIF_DEBUG fpos = php_stream_tell(ImageInfo->infile); exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Needing section %d @ 0x%08X", ImageInfo->file.count, fpos); #endif /* get marker byte, swallowing possible padding */ /* some software does not count the length bytes of COM section */ /* one company doing so is very much envolved in JPEG... so we accept too */ if (last_marker==M_COM && comment_correction) { comment_correction = 2; } do { if ((marker = php_stream_getc(ImageInfo->infile)) == EOF) { EXIF_ERRLOG_CORRUPT(ImageInfo) return FALSE; } if (last_marker==M_COM && comment_correction>0) { if (marker!=0xFF) { marker = 0xff; comment_correction--; } else { last_marker = M_PSEUDO; /* stop skipping 0 for M_COM */ } } } while (marker == 0xff); if (last_marker==M_COM && !comment_correction) { exif_error_docref("exif_read_data#error_mcom" EXIFERR_CC, ImageInfo, E_NOTICE, "Image has corrupt COM section: some software set wrong length information"); } if (last_marker==M_COM && comment_correction) return M_EOI; /* ah illegal: char after COM section not 0xFF */ fpos = php_stream_tell(ImageInfo->infile); if (marker == 0xff) { /* 0xff is legal padding, but if we get that many, something's wrong. */ exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "To many padding bytes"); return FALSE; } /* Read the length of the section. */ if ((lh = php_stream_getc(ImageInfo->infile)) == (unsigned int)EOF) { EXIF_ERRLOG_CORRUPT(ImageInfo) return FALSE; } if ((ll = php_stream_getc(ImageInfo->infile)) == (unsigned int)EOF) { EXIF_ERRLOG_CORRUPT(ImageInfo) return FALSE; } itemlen = (lh << 8) | ll; if (itemlen < 2) { #ifdef EXIF_DEBUG exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "%s, Section length: 0x%02X%02X", EXIF_ERROR_CORRUPT, lh, ll); #else EXIF_ERRLOG_CORRUPT(ImageInfo) #endif return FALSE; } sn = exif_file_sections_add(ImageInfo, marker, itemlen+1, NULL); Data = ImageInfo->file.list[sn].data; /* Store first two pre-read bytes. */ Data[0] = (uchar)lh; Data[1] = (uchar)ll; got = php_stream_read(ImageInfo->infile, (char*)(Data+2), itemlen-2); /* Read the whole section. */ if (got != itemlen-2) { exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Error reading from file: got=x%04X(=%d) != itemlen-2=x%04X(=%d)", got, got, itemlen-2, itemlen-2); return FALSE; } #ifdef EXIF_DEBUG exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Process section(x%02X=%s) @ x%04X + x%04X(=%d)", marker, exif_get_markername(marker), fpos, itemlen, itemlen); #endif switch(marker) { case M_SOS: /* stop before hitting compressed data */ /* If reading entire image is requested, read the rest of the data. */ if (ImageInfo->read_all) { /* Determine how much file is left. */ fpos = php_stream_tell(ImageInfo->infile); size = ImageInfo->FileSize - fpos; sn = exif_file_sections_add(ImageInfo, M_PSEUDO, size, NULL); Data = ImageInfo->file.list[sn].data; got = php_stream_read(ImageInfo->infile, (char*)Data, size); if (got != size) { EXIF_ERRLOG_FILEEOF(ImageInfo) return FALSE; } } return TRUE; case M_EOI: /* in case it's a tables-only JPEG stream */ exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "No image in jpeg!"); return (ImageInfo->sections_found&(~FOUND_COMPUTED)) ? TRUE : FALSE; case M_COM: /* Comment section */ exif_process_COM(ImageInfo, (char *)Data, itemlen); break; case M_EXIF: if (!(ImageInfo->sections_found&FOUND_IFD0)) { /*ImageInfo->sections_found |= FOUND_EXIF;*/ /* Seen files from some 'U-lead' software with Vivitar scanner that uses marker 31 later in the file (no clue what for!) */ exif_process_APP1(ImageInfo, (char *)Data, itemlen, fpos); } break; case M_APP12: exif_process_APP12(ImageInfo, (char *)Data, itemlen); break; case M_SOF0: case M_SOF1: case M_SOF2: case M_SOF3: case M_SOF5: case M_SOF6: case M_SOF7: case M_SOF9: case M_SOF10: case M_SOF11: case M_SOF13: case M_SOF14: case M_SOF15: if ((itemlen - 2) < 6) { return FALSE; } exif_process_SOFn(Data, marker, &sof_info); ImageInfo->Width = sof_info.width; ImageInfo->Height = sof_info.height; if (sof_info.num_components == 3) { ImageInfo->IsColor = 1; } else { ImageInfo->IsColor = 0; } break; default: /* skip any other marker silently. */ break; } /* keep track of last marker */ last_marker = marker; } #ifdef EXIF_DEBUG exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Done"); #endif return TRUE; } /* }}} */ /* {{{ exif_scan_thumbnail * scan JPEG in thumbnail (memory) */ static int exif_scan_thumbnail(image_info_type *ImageInfo) { uchar c, *data = (uchar*)ImageInfo->Thumbnail.data; int n, marker; size_t length=2, pos=0; jpeg_sof_info sof_info; if (!data) { return FALSE; /* nothing to do here */ } if (memcmp(data, "\xFF\xD8\xFF", 3)) { if (!ImageInfo->Thumbnail.width && !ImageInfo->Thumbnail.height) { exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Thumbnail is not a JPEG image"); } return FALSE; } for (;;) { pos += length; if (pos>=ImageInfo->Thumbnail.size) return FALSE; c = data[pos++]; if (pos>=ImageInfo->Thumbnail.size) return FALSE; if (c != 0xFF) { return FALSE; } n = 8; while ((c = data[pos++]) == 0xFF && n--) { if (pos+3>=ImageInfo->Thumbnail.size) return FALSE; /* +3 = pos++ of next check when reaching marker + 2 bytes for length */ } if (c == 0xFF) return FALSE; marker = c; length = php_jpg_get16(data+pos); if (pos+length>=ImageInfo->Thumbnail.size) { return FALSE; } #ifdef EXIF_DEBUG exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: process section(x%02X=%s) @ x%04X + x%04X", marker, exif_get_markername(marker), pos, length); #endif switch (marker) { case M_SOF0: case M_SOF1: case M_SOF2: case M_SOF3: case M_SOF5: case M_SOF6: case M_SOF7: case M_SOF9: case M_SOF10: case M_SOF11: case M_SOF13: case M_SOF14: case M_SOF15: /* handle SOFn block */ exif_process_SOFn(data+pos, marker, &sof_info); ImageInfo->Thumbnail.height = sof_info.height; ImageInfo->Thumbnail.width = sof_info.width; #ifdef EXIF_DEBUG exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Thumbnail: size: %d * %d", sof_info.width, sof_info.height); #endif return TRUE; case M_SOS: case M_EOI: exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Could not compute size of thumbnail"); return FALSE; break; default: /* just skip */ break; } } exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Could not compute size of thumbnail"); return FALSE; } /* }}} */ /* {{{ exif_process_IFD_in_TIFF * Parse the TIFF header; */ static int exif_process_IFD_in_TIFF(image_info_type *ImageInfo, size_t dir_offset, int section_index) { int i, sn, num_entries, sub_section_index = 0; unsigned char *dir_entry; char tagname[64]; size_t ifd_size, dir_size, entry_offset, next_offset, entry_length, entry_value=0, fgot; int entry_tag , entry_type; tag_table_type tag_table = exif_get_tag_table(section_index); if (ImageInfo->ifd_nesting_level > MAX_IFD_NESTING_LEVEL) { return FALSE; } if (ImageInfo->FileSize >= dir_offset+2) { sn = exif_file_sections_add(ImageInfo, M_PSEUDO, 2, NULL); #ifdef EXIF_DEBUG exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read from TIFF: filesize(x%04X), IFD dir(x%04X + x%04X)", ImageInfo->FileSize, dir_offset, 2); #endif php_stream_seek(ImageInfo->infile, dir_offset, SEEK_SET); /* we do not know the order of sections */ php_stream_read(ImageInfo->infile, (char*)ImageInfo->file.list[sn].data, 2); num_entries = php_ifd_get16u(ImageInfo->file.list[sn].data, ImageInfo->motorola_intel); dir_size = 2/*num dir entries*/ +12/*length of entry*/*num_entries +4/* offset to next ifd (points to thumbnail or NULL)*/; if (ImageInfo->FileSize >= dir_offset+dir_size) { #ifdef EXIF_DEBUG exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read from TIFF: filesize(x%04X), IFD dir(x%04X + x%04X), IFD entries(%d)", ImageInfo->FileSize, dir_offset+2, dir_size-2, num_entries); #endif if (exif_file_sections_realloc(ImageInfo, sn, dir_size)) { return FALSE; } php_stream_read(ImageInfo->infile, (char*)(ImageInfo->file.list[sn].data+2), dir_size-2); /*exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Dump: %s", exif_char_dump(ImageInfo->file.list[sn].data, dir_size, 0));*/ next_offset = php_ifd_get32u(ImageInfo->file.list[sn].data + dir_size - 4, ImageInfo->motorola_intel); #ifdef EXIF_DEBUG exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read from TIFF done, next offset x%04X", next_offset); #endif /* now we have the directory we can look how long it should be */ ifd_size = dir_size; for(i=0;ifile.list[sn].data+2+i*12; entry_tag = php_ifd_get16u(dir_entry+0, ImageInfo->motorola_intel); entry_type = php_ifd_get16u(dir_entry+2, ImageInfo->motorola_intel); if (entry_type > NUM_FORMATS) { exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read from TIFF: tag(0x%04X,%12s): Illegal format code 0x%04X, switching to BYTE", entry_tag, exif_get_tagname(entry_tag, tagname, -12, tag_table), entry_type); /* Since this is repeated in exif_process_IFD_TAG make it a notice here */ /* and make it a warning in the exif_process_IFD_TAG which is called */ /* elsewhere. */ entry_type = TAG_FMT_BYTE; /*The next line would break the image on writeback: */ /* php_ifd_set16u(dir_entry+2, entry_type, ImageInfo->motorola_intel);*/ } entry_length = php_ifd_get32u(dir_entry+4, ImageInfo->motorola_intel) * php_tiff_bytes_per_format[entry_type]; if (entry_length <= 4) { switch(entry_type) { case TAG_FMT_USHORT: entry_value = php_ifd_get16u(dir_entry+8, ImageInfo->motorola_intel); break; case TAG_FMT_SSHORT: entry_value = php_ifd_get16s(dir_entry+8, ImageInfo->motorola_intel); break; case TAG_FMT_ULONG: entry_value = php_ifd_get32u(dir_entry+8, ImageInfo->motorola_intel); break; case TAG_FMT_SLONG: entry_value = php_ifd_get32s(dir_entry+8, ImageInfo->motorola_intel); break; } switch(entry_tag) { case TAG_IMAGEWIDTH: case TAG_COMP_IMAGE_WIDTH: ImageInfo->Width = entry_value; break; case TAG_IMAGEHEIGHT: case TAG_COMP_IMAGE_HEIGHT: ImageInfo->Height = entry_value; break; case TAG_PHOTOMETRIC_INTERPRETATION: switch (entry_value) { case PMI_BLACK_IS_ZERO: case PMI_WHITE_IS_ZERO: case PMI_TRANSPARENCY_MASK: ImageInfo->IsColor = 0; break; case PMI_RGB: case PMI_PALETTE_COLOR: case PMI_SEPARATED: case PMI_YCBCR: case PMI_CIELAB: ImageInfo->IsColor = 1; break; } break; } } else { entry_offset = php_ifd_get32u(dir_entry+8, ImageInfo->motorola_intel); /* if entry needs expading ifd cache and entry is at end of current ifd cache. */ /* otherwise there may be huge holes between two entries */ if (entry_offset + entry_length > dir_offset + ifd_size && entry_offset == dir_offset + ifd_size) { ifd_size = entry_offset + entry_length - dir_offset; #ifdef EXIF_DEBUG exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Resize struct: x%04X + x%04X - x%04X = x%04X", entry_offset, entry_length, dir_offset, ifd_size); #endif } } } if (ImageInfo->FileSize >= dir_offset + ImageInfo->file.list[sn].size) { if (ifd_size > dir_size) { if (dir_offset + ifd_size > ImageInfo->FileSize) { exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Error in TIFF: filesize(x%04X) less than size of IFD(x%04X + x%04X)", ImageInfo->FileSize, dir_offset, ifd_size); return FALSE; } if (exif_file_sections_realloc(ImageInfo, sn, ifd_size)) { return FALSE; } /* read values not stored in directory itself */ #ifdef EXIF_DEBUG exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read from TIFF: filesize(x%04X), IFD(x%04X + x%04X)", ImageInfo->FileSize, dir_offset, ifd_size); #endif php_stream_read(ImageInfo->infile, (char*)(ImageInfo->file.list[sn].data+dir_size), ifd_size-dir_size); #ifdef EXIF_DEBUG exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read from TIFF, done"); #endif } /* now process the tags */ for(i=0;ifile.list[sn].data+2+i*12; entry_tag = php_ifd_get16u(dir_entry+0, ImageInfo->motorola_intel); entry_type = php_ifd_get16u(dir_entry+2, ImageInfo->motorola_intel); /*entry_length = php_ifd_get32u(dir_entry+4, ImageInfo->motorola_intel);*/ if (entry_tag == TAG_EXIF_IFD_POINTER || entry_tag == TAG_INTEROP_IFD_POINTER || entry_tag == TAG_GPS_IFD_POINTER || entry_tag == TAG_SUB_IFD ) { switch(entry_tag) { case TAG_EXIF_IFD_POINTER: ImageInfo->sections_found |= FOUND_EXIF; sub_section_index = SECTION_EXIF; break; case TAG_GPS_IFD_POINTER: ImageInfo->sections_found |= FOUND_GPS; sub_section_index = SECTION_GPS; break; case TAG_INTEROP_IFD_POINTER: ImageInfo->sections_found |= FOUND_INTEROP; sub_section_index = SECTION_INTEROP; break; case TAG_SUB_IFD: ImageInfo->sections_found |= FOUND_THUMBNAIL; sub_section_index = SECTION_THUMBNAIL; break; } entry_offset = php_ifd_get32u(dir_entry+8, ImageInfo->motorola_intel); #ifdef EXIF_DEBUG exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Next IFD: %s @x%04X", exif_get_sectionname(sub_section_index), entry_offset); #endif ImageInfo->ifd_nesting_level++; exif_process_IFD_in_TIFF(ImageInfo, entry_offset, sub_section_index); if (section_index!=SECTION_THUMBNAIL && entry_tag==TAG_SUB_IFD) { if (ImageInfo->Thumbnail.filetype != IMAGE_FILETYPE_UNKNOWN && ImageInfo->Thumbnail.size && ImageInfo->Thumbnail.offset && ImageInfo->read_thumbnail ) { #ifdef EXIF_DEBUG exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "%s THUMBNAIL @0x%04X + 0x%04X", ImageInfo->Thumbnail.data ? "Ignore" : "Read", ImageInfo->Thumbnail.offset, ImageInfo->Thumbnail.size); #endif if (!ImageInfo->Thumbnail.data) { ImageInfo->Thumbnail.data = safe_emalloc(ImageInfo->Thumbnail.size, 1, 0); php_stream_seek(ImageInfo->infile, ImageInfo->Thumbnail.offset, SEEK_SET); fgot = php_stream_read(ImageInfo->infile, ImageInfo->Thumbnail.data, ImageInfo->Thumbnail.size); if (fgot < ImageInfo->Thumbnail.size) { EXIF_ERRLOG_THUMBEOF(ImageInfo) efree(ImageInfo->Thumbnail.data); ImageInfo->Thumbnail.data = NULL; } else { exif_thumbnail_build(ImageInfo); } } } } #ifdef EXIF_DEBUG exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Next IFD: %s done", exif_get_sectionname(sub_section_index)); #endif } else { if (!exif_process_IFD_TAG(ImageInfo, (char*)dir_entry, (char*)(ImageInfo->file.list[sn].data-dir_offset), ifd_size, 0, section_index, 0, tag_table)) { return FALSE; } } } /* If we had a thumbnail in a SUB_IFD we have ANOTHER image in NEXT IFD */ if (next_offset && section_index != SECTION_THUMBNAIL) { /* this should be a thumbnail IFD */ /* the thumbnail itself is stored at Tag=StripOffsets */ #ifdef EXIF_DEBUG exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read next IFD (THUMBNAIL) at x%04X", next_offset); #endif ImageInfo->ifd_nesting_level++; exif_process_IFD_in_TIFF(ImageInfo, next_offset, SECTION_THUMBNAIL); #ifdef EXIF_DEBUG exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "%s THUMBNAIL @0x%04X + 0x%04X", ImageInfo->Thumbnail.data ? "Ignore" : "Read", ImageInfo->Thumbnail.offset, ImageInfo->Thumbnail.size); #endif if (!ImageInfo->Thumbnail.data && ImageInfo->Thumbnail.offset && ImageInfo->Thumbnail.size && ImageInfo->read_thumbnail) { ImageInfo->Thumbnail.data = safe_emalloc(ImageInfo->Thumbnail.size, 1, 0); php_stream_seek(ImageInfo->infile, ImageInfo->Thumbnail.offset, SEEK_SET); fgot = php_stream_read(ImageInfo->infile, ImageInfo->Thumbnail.data, ImageInfo->Thumbnail.size); if (fgot < ImageInfo->Thumbnail.size) { EXIF_ERRLOG_THUMBEOF(ImageInfo) efree(ImageInfo->Thumbnail.data); ImageInfo->Thumbnail.data = NULL; } else { exif_thumbnail_build(ImageInfo); } } #ifdef EXIF_DEBUG exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Read next IFD (THUMBNAIL) done"); #endif } return TRUE; } else { exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Error in TIFF: filesize(x%04X) less than size of IFD(x%04X)", ImageInfo->FileSize, dir_offset+ImageInfo->file.list[sn].size); return FALSE; } } else { exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Error in TIFF: filesize(x%04X) less than size of IFD dir(x%04X)", ImageInfo->FileSize, dir_offset+dir_size); return FALSE; } } else { exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Error in TIFF: filesize(x%04X) less than start of IFD dir(x%04X)", ImageInfo->FileSize, dir_offset+2); return FALSE; } } /* }}} */ /* {{{ exif_scan_FILE_header * Parse the marker stream until SOS or EOI is seen; */ static int exif_scan_FILE_header(image_info_type *ImageInfo) { unsigned char file_header[8]; int ret = FALSE; ImageInfo->FileType = IMAGE_FILETYPE_UNKNOWN; if (ImageInfo->FileSize >= 2) { php_stream_seek(ImageInfo->infile, 0, SEEK_SET); if (php_stream_read(ImageInfo->infile, (char*)file_header, 2) != 2) { return FALSE; } if ((file_header[0]==0xff) && (file_header[1]==M_SOI)) { ImageInfo->FileType = IMAGE_FILETYPE_JPEG; if (exif_scan_JPEG_header(ImageInfo)) { ret = TRUE; } else { exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid JPEG file"); } } else if (ImageInfo->FileSize >= 8) { if (php_stream_read(ImageInfo->infile, (char*)(file_header+2), 6) != 6) { return FALSE; } if (!memcmp(file_header, "II\x2A\x00", 4)) { ImageInfo->FileType = IMAGE_FILETYPE_TIFF_II; ImageInfo->motorola_intel = 0; #ifdef EXIF_DEBUG exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "File has TIFF/II format"); #endif ImageInfo->sections_found |= FOUND_IFD0; if (exif_process_IFD_in_TIFF(ImageInfo, php_ifd_get32u(file_header + 4, ImageInfo->motorola_intel), SECTION_IFD0)) { ret = TRUE; } else { exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid TIFF file"); } } else if (!memcmp(file_header, "MM\x00\x2a", 4)) { ImageInfo->FileType = IMAGE_FILETYPE_TIFF_MM; ImageInfo->motorola_intel = 1; #ifdef EXIF_DEBUG exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "File has TIFF/MM format"); #endif ImageInfo->sections_found |= FOUND_IFD0; if (exif_process_IFD_in_TIFF(ImageInfo, php_ifd_get32u(file_header + 4, ImageInfo->motorola_intel), SECTION_IFD0)) { ret = TRUE; } else { exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Invalid TIFF file"); } } else { exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "File not supported"); return FALSE; } } } else { exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "File too small (%d)", ImageInfo->FileSize); } return ret; } /* }}} */ /* {{{ exif_discard_imageinfo Discard data scanned by exif_read_file. */ static int exif_discard_imageinfo(image_info_type *ImageInfo) { int i; EFREE_IF(ImageInfo->FileName); EFREE_IF(ImageInfo->UserComment); EFREE_IF(ImageInfo->UserCommentEncoding); EFREE_IF(ImageInfo->Copyright); EFREE_IF(ImageInfo->CopyrightPhotographer); EFREE_IF(ImageInfo->CopyrightEditor); EFREE_IF(ImageInfo->Thumbnail.data); EFREE_IF(ImageInfo->encode_unicode); EFREE_IF(ImageInfo->decode_unicode_be); EFREE_IF(ImageInfo->decode_unicode_le); EFREE_IF(ImageInfo->encode_jis); EFREE_IF(ImageInfo->decode_jis_be); EFREE_IF(ImageInfo->decode_jis_le); EFREE_IF(ImageInfo->make); EFREE_IF(ImageInfo->model); for (i=0; ixp_fields.count; i++) { EFREE_IF(ImageInfo->xp_fields.list[i].value); } EFREE_IF(ImageInfo->xp_fields.list); for (i=0; imotorola_intel = -1; /* flag as unknown */ ImageInfo->infile = php_stream_open_wrapper(FileName, "rb", STREAM_MUST_SEEK|IGNORE_PATH, NULL); if (!ImageInfo->infile) { exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Unable to open file"); return FALSE; } if (php_stream_is(ImageInfo->infile, PHP_STREAM_IS_STDIO)) { if (VCWD_STAT(FileName, &st) >= 0) { if ((st.st_mode & S_IFMT) != S_IFREG) { exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_WARNING, "Not a file"); php_stream_close(ImageInfo->infile); return FALSE; } /* Store file date/time. */ ImageInfo->FileDateTime = st.st_mtime; ImageInfo->FileSize = st.st_size; /*exif_error_docref(NULL EXIFERR_CC, ImageInfo, E_NOTICE, "Opened stream is file: %d", ImageInfo->FileSize);*/ } } else { if (!ImageInfo->FileSize) { php_stream_seek(ImageInfo->infile, 0, SEEK_END); ImageInfo->FileSize = php_stream_tell(ImageInfo->infile); php_stream_seek(ImageInfo->infile, 0, SEEK_SET); } } base = php_basename(FileName, strlen(FileName), NULL, 0); ImageInfo->FileName = estrndup(ZSTR_VAL(base), ZSTR_LEN(base)); zend_string_release(base); ImageInfo->read_thumbnail = read_thumbnail; ImageInfo->read_all = read_all; ImageInfo->Thumbnail.filetype = IMAGE_FILETYPE_UNKNOWN; ImageInfo->encode_unicode = estrdup(EXIF_G(encode_unicode)); ImageInfo->decode_unicode_be = estrdup(EXIF_G(decode_unicode_be)); ImageInfo->decode_unicode_le = estrdup(EXIF_G(decode_unicode_le)); ImageInfo->encode_jis = estrdup(EXIF_G(encode_jis)); ImageInfo->decode_jis_be = estrdup(EXIF_G(decode_jis_be)); ImageInfo->decode_jis_le = estrdup(EXIF_G(decode_jis_le)); ImageInfo->ifd_nesting_level = 0; /* Scan the JPEG headers. */ ret = exif_scan_FILE_header(ImageInfo); php_stream_close(ImageInfo->infile); return ret; } /* }}} */ /* {{{ proto array exif_read_data(string filename [, string sections_needed [, bool sub_arrays[, bool read_thumbnail]]]) Reads header data from the JPEG/TIFF image filename and optionally reads the internal thumbnails */ PHP_FUNCTION(exif_read_data) { char *p_name, *p_sections_needed = NULL; size_t p_name_len, p_sections_needed_len = 0; zend_bool sub_arrays=0, read_thumbnail=0, read_all=0; int i, ret, sections_needed=0; image_info_type ImageInfo; char tmp[64], *sections_str, *s; if (zend_parse_parameters(ZEND_NUM_ARGS(), "p|sbb", &p_name, &p_name_len, &p_sections_needed, &p_sections_needed_len, &sub_arrays, &read_thumbnail) == FAILURE) { return; } memset(&ImageInfo, 0, sizeof(ImageInfo)); if (p_sections_needed) { spprintf(§ions_str, 0, ",%s,", p_sections_needed); /* sections_str DOES start with , and SPACES are NOT allowed in names */ s = sections_str; while (*++s) { if (*s == ' ') { *s = ','; } } for (i = 0; i < SECTION_COUNT; i++) { snprintf(tmp, sizeof(tmp), ",%s,", exif_get_sectionname(i)); if (strstr(sections_str, tmp)) { sections_needed |= 1<0 && ImageInfo.Height>0) { exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "html" , "width=\"%d\" height=\"%d\"", ImageInfo.Width, ImageInfo.Height); exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "Height", ImageInfo.Height); exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "Width", ImageInfo.Width); } exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "IsColor", ImageInfo.IsColor); if (ImageInfo.motorola_intel != -1) { exif_iif_add_int(&ImageInfo, SECTION_COMPUTED, "ByteOrderMotorola", ImageInfo.motorola_intel); } if (ImageInfo.FocalLength) { exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "FocalLength", "%4.1Fmm", ImageInfo.FocalLength); if(ImageInfo.CCDWidth) { exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "35mmFocalLength", "%dmm", (int)(ImageInfo.FocalLength/ImageInfo.CCDWidth*35+0.5)); } } if(ImageInfo.CCDWidth) { exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "CCDWidth", "%dmm", (int)ImageInfo.CCDWidth); } if(ImageInfo.ExposureTime>0) { if(ImageInfo.ExposureTime <= 0.5) { exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "ExposureTime", "%0.3F s (1/%d)", ImageInfo.ExposureTime, (int)(0.5 + 1/ImageInfo.ExposureTime)); } else { exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "ExposureTime", "%0.3F s", ImageInfo.ExposureTime); } } if(ImageInfo.ApertureFNumber) { exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "ApertureFNumber", "f/%.1F", ImageInfo.ApertureFNumber); } if(ImageInfo.Distance) { if(ImageInfo.Distance<0) { exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "FocusDistance", "Infinite"); } else { exif_iif_add_fmt(&ImageInfo, SECTION_COMPUTED, "FocusDistance", "%0.2Fm", ImageInfo.Distance); } } if (ImageInfo.UserComment) { exif_iif_add_buffer(&ImageInfo, SECTION_COMPUTED, "UserComment", ImageInfo.UserCommentLength, ImageInfo.UserComment); if (ImageInfo.UserCommentEncoding && strlen(ImageInfo.UserCommentEncoding)) { exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "UserCommentEncoding", ImageInfo.UserCommentEncoding); } } exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "Copyright", ImageInfo.Copyright); exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "Copyright.Photographer", ImageInfo.CopyrightPhotographer); exif_iif_add_str(&ImageInfo, SECTION_COMPUTED, "Copyright.Editor", ImageInfo.CopyrightEditor); for (i=0; i= 3) { if (!ImageInfo.Thumbnail.width || !ImageInfo.Thumbnail.height) { exif_scan_thumbnail(&ImageInfo); } zval_dtor(p_width); zval_dtor(p_height); ZVAL_LONG(p_width, ImageInfo.Thumbnail.width); ZVAL_LONG(p_height, ImageInfo.Thumbnail.height); } if (arg_c >= 4) { zval_dtor(p_imagetype); ZVAL_LONG(p_imagetype, ImageInfo.Thumbnail.filetype); } #ifdef EXIF_DEBUG exif_error_docref(NULL EXIFERR_CC, &ImageInfo, E_NOTICE, "Discarding info"); #endif exif_discard_imageinfo(&ImageInfo); #ifdef EXIF_DEBUG php_error_docref1(NULL, p_name, E_NOTICE, "Done"); #endif } /* }}} */ /* {{{ proto int exif_imagetype(string imagefile) Get the type of an image */ PHP_FUNCTION(exif_imagetype) { char *imagefile; size_t imagefile_len; php_stream * stream; int itype = 0; if (zend_parse_parameters(ZEND_NUM_ARGS(), "p", &imagefile, &imagefile_len) == FAILURE) { return; } stream = php_stream_open_wrapper(imagefile, "rb", IGNORE_PATH|REPORT_ERRORS, NULL); if (stream == NULL) { RETURN_FALSE; } itype = php_getimagetype(stream, NULL); php_stream_close(stream); if (itype == IMAGE_FILETYPE_UNKNOWN) { RETURN_FALSE; } else { ZVAL_LONG(return_value, itype); } } /* }}} */ #endif /* * Local variables: * tab-width: 4 * c-basic-offset: 4 * End: * vim600: sw=4 ts=4 tw=78 fdm=marker * vim<600: sw=4 ts=4 tw=78 */