/*************************************************************************** image_stat.c (c) 2000-2009 Benoît Minisini This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. ***************************************************************************/ /* This product includes PHP software, freely available from http://www.php.net/software/ */ /* +----------------------------------------------------------------------+ | PHP Version 5 | +----------------------------------------------------------------------+ | Copyright (c) 1997-2008 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: image.c,v 1.114.2.2.2.7 2007/12/31 07:20:12 sebastian Exp $ */ /* This code is freely adapted from the /ext/standard/image.c file of PHP 5.2.4 */ #define __IMAGE_STAT_C #include #include #if HAVE_FCNTL_H #include #endif #if HAVE_UNISTD_H #include #endif #include "image_stat.h" #define emalloc malloc #define erealloc realloc #define efree free const char *IMAGE_error = NULL; /* file type markers */ const char _signature_gif[3] = {'G', 'I', 'F'}; const char _signature_psd[4] = {'8', 'B', 'P', 'S'}; const char _signature_bmp[2] = {'B', 'M'}; const char _signature_swf[3] = {'F', 'W', 'S'}; const char _signature_swc[3] = {'C', 'W', 'S'}; const char _signature_jpg[3] = {(char) 0xff, (char) 0xd8, (char) 0xff}; const char _signature_png[8] = {(char) 0x89, (char) 0x50, (char) 0x4e, (char) 0x47, (char) 0x0d, (char) 0x0a, (char) 0x1a, (char) 0x0a}; const char _signature_tif_ii[4] = {'I','I', (char)0x2A, (char)0x00}; const char _signature_tif_mm[4] = {'M','M', (char)0x00, (char)0x2A}; const char _signature_jpc[3] = {(char)0xff, (char)0x4f, (char)0xff}; const char _signature_jp2[12] = {(char)0x00, (char)0x00, (char)0x00, (char)0x0c, (char)0x6a, (char)0x50, (char)0x20, (char)0x20, (char)0x0d, (char)0x0a, (char)0x87, (char)0x0a}; const char _signature_iff[4] = {'F','O','R','M'}; static int stream_seek(IMAGE_STREAM *stream, int pos, int whence) { switch (whence) { case SEEK_CUR: if ((stream->pos + pos) >= stream->len) return 1; if ((stream->pos + pos) < 0) return 1; stream->pos += pos; return 0; case SEEK_SET: if (pos < 0 || pos >= stream->len) return 1; stream->pos = pos; return 0; default: return 1; } } static int stream_read(IMAGE_STREAM *stream, void *addr, int len) { int lmax = stream->len - stream->pos; if (len > lmax) len = lmax; memcpy(addr, stream->addr + stream->pos, len); stream->pos += len; return len; } static int stream_getc(IMAGE_STREAM *stream) { if (stream->pos >= stream->len) return EOF; return (unsigned char)stream->addr[stream->pos++]; } /* REMEMBER TO ADD MIME-TYPE TO FUNCTION php_image_type_to_mime_type */ /* PCX must check first 64bytes and byte 0=0x0a and byte2 < 0x06 */ /* return info as a struct, to make expansion easier */ /* {{{ handle_gif * routine to handle GIF files. If only everything were that easy... ;} */ static int handle_gif (IMAGE_STREAM * stream, IMAGE_INFO *result) { unsigned char dim[5]; if (stream_seek(stream, 3, SEEK_CUR)) return 1; if (stream_read(stream, dim, sizeof(dim)) != sizeof(dim)) return 1; result->width = (unsigned int)dim[0] | (((unsigned int)dim[1])<<8); result->height = (unsigned int)dim[2] | (((unsigned int)dim[3])<<8); result->depth = dim[4]&0x80 ? ((((unsigned int)dim[4])&0x07) + 1) : 0; return 0; } #if 0 /* {{{ handle_psd */ static int handle_psd (IMAGE_STREAM * stream, IMAGE_INFO *result) { unsigned char dim[8]; if (stream_seek(stream, 11, SEEK_CUR)) return 1; if (stream_read(stream, dim, sizeof(dim)) != sizeof(dim)) return 1; result->height = (((unsigned int)dim[0]) << 24) + (((unsigned int)dim[1]) << 16) + (((unsigned int)dim[2]) << 8) + ((unsigned int)dim[3]); result->width = (((unsigned int)dim[4]) << 24) + (((unsigned int)dim[5]) << 16) + (((unsigned int)dim[6]) << 8) + ((unsigned int)dim[7]); return 0; } #endif /* {{{ handle_bmp */ static int handle_bmp (IMAGE_STREAM * stream, IMAGE_INFO *result) { unsigned char dim[16]; int size; if (stream_seek(stream, 11, SEEK_CUR)) return 1; if (stream_read(stream, dim, sizeof(dim)) != sizeof(dim)) return 1; size = (((unsigned int)dim[ 3]) << 24) + (((unsigned int)dim[ 2]) << 16) + (((unsigned int)dim[ 1]) << 8) + ((unsigned int) dim[ 0]); if (size == 12) { result->width = (((unsigned int)dim[ 5]) << 8) + ((unsigned int) dim[ 4]); result->height = (((unsigned int)dim[ 7]) << 8) + ((unsigned int) dim[ 6]); result->depth = ((unsigned int)dim[11]); } else if (size > 12 && (size <= 64 || size == 108)) { result->width = (((unsigned int)dim[ 7]) << 24) + (((unsigned int)dim[ 6]) << 16) + (((unsigned int)dim[ 5]) << 8) + ((unsigned int) dim[ 4]); result->height = (((unsigned int)dim[11]) << 24) + (((unsigned int)dim[10]) << 16) + (((unsigned int)dim[ 9]) << 8) + ((unsigned int) dim[ 8]); result->depth = (((unsigned int)dim[15]) << 8) + ((unsigned int)dim[14]); } else { return 1; } return 0; } #if 0 /* {{{ php_swf_get_bits * routines to handle SWF files. */ static unsigned long int php_swf_get_bits (unsigned char* buffer, unsigned int pos, unsigned int count) { unsigned int loop; unsigned long int result = 0; for (loop = pos; loop < pos + count; loop++) { result = result + ((((buffer[loop / 8]) >> (7 - (loop % 8))) & 0x01) << (count - (loop - pos) - 1)); } return result; } #if HAVE_ZLIB && !defined(COMPILE_DL_ZLIB) /* {{{ handle_swc */ static IMAGE_INFO *handle_swc(IMAGE_STREAM * stream) { IMAGE_INFO *result = NULL; long bits; unsigned char a[64]; unsigned long len=64, szlength; int factor=1,maxfactor=16; int slength, status=0; char *b, *buf=NULL, *bufz=NULL; b = ecalloc (1, len + 1); if (stream_seek(stream, 5, SEEK_CUR)) return NULL; if (stream_read(stream, a, sizeof(a)) != sizeof(a)) return NULL; if (uncompress(b, &len, a, sizeof(a)) != Z_OK) { /* failed to decompress the file, will try reading the rest of the file */ if (stream_seek(stream, 8, SEEK_SET)) return NULL; slength = stream_copy_to_mem(stream, &bufz, stream_COPY_ALL, 0); /* * zlib::uncompress() wants to know the output data length * if none was given as a parameter * we try from input length * 2 up to input length * 2^8 * doubling it whenever it wasn't big enough * that should be eneugh for all real life cases */ do { szlength=slength*(1<width = (php_swf_get_bits (b, 5 + bits, bits) - php_swf_get_bits (b, 5, bits)) / 20; result->height = (php_swf_get_bits (b, 5 + (3 * bits), bits) - php_swf_get_bits (b, 5 + (2 * bits), bits)) / 20; } else { result = NULL; } efree (b); return result; } #endif /* {{{ handle_swf */ static IMAGE_INFO *handle_swf (IMAGE_STREAM * stream) { IMAGE_INFO *result = NULL; long bits; unsigned char a[32]; if (stream_seek(stream, 5, SEEK_CUR)) return NULL; if (stream_read(stream, a, sizeof(a)) != sizeof(a)) return NULL; result = (IMAGE_INFO *) ecalloc (1, sizeof (IMAGE_INFO)); bits = php_swf_get_bits (a, 0, 5); result->width = (php_swf_get_bits (a, 5 + bits, bits) - php_swf_get_bits (a, 5, bits)) / 20; result->height = (php_swf_get_bits (a, 5 + (3 * bits), bits) - php_swf_get_bits (a, 5 + (2 * bits), bits)) / 20; result->bits = 0; result->channels = 0; return result; } #endif /* {{{ handle_png * routine to handle PNG files */ static int handle_png (IMAGE_STREAM * stream, IMAGE_INFO *result) { unsigned char dim[13]; /* Width: 4 bytes * Height: 4 bytes * Bit depth: 1 byte * Color type: 1 byte * Compression method: 1 byte * Filter method: 1 byte * Interlace method: 1 byte */ if (stream_seek(stream, 8, SEEK_CUR)) return 1; if((stream_read(stream, dim, sizeof(dim))) < sizeof(dim)) return 1; result->width = (((unsigned int)dim[0]) << 24) + (((unsigned int)dim[1]) << 16) + (((unsigned int)dim[2]) << 8) + ((unsigned int)dim[3]); result->height = (((unsigned int)dim[4]) << 24) + (((unsigned int)dim[5]) << 16) + (((unsigned int)dim[6]) << 8) + ((unsigned int)dim[7]); switch (dim[9]) { case 0: result->depth = 8; break; case 2: result->depth = 24; break; case 3: result->depth = 8; break; case 4: result->depth = 32; break; case 6: result->depth = 32; break; default: result->depth = 32; break; } return 0; } /* routines to handle JPEG data */ /* some defines for the different JPEG block types */ #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_SOF5 0xC5 /* NB: codes C4 and CC are NOT SOF markers */ #define M_SOF6 0xC6 #define M_SOF7 0xC7 #define M_SOF9 0xC9 #define M_SOF10 0xCA #define M_SOF11 0xCB #define M_SOF13 0xCD #define M_SOF14 0xCE #define M_SOF15 0xCF #define M_SOI 0xD8 #define M_EOI 0xD9 /* End Of Image (end of datastream) */ #define M_SOS 0xDA /* Start Of Scan (begins compressed data) */ #define M_APP0 0xe0 #define M_APP1 0xe1 #define M_APP2 0xe2 #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 #define M_APP14 0xee #define M_APP15 0xef #define M_COM 0xFE /* COMment */ #define M_PSEUDO 0xFFD8 /* pseudo marker for start of image(byte 0) */ /* {{{ php_read2 */ static unsigned short php_read2(IMAGE_STREAM * stream) { unsigned char a[2]; /* just return 0 if we hit the end-of-file */ if((stream_read(stream, a, sizeof(a))) <= 0) return 0; return (((unsigned short)a[0]) << 8) + ((unsigned short)a[1]); } /* {{{ php_next_marker * get next marker byte from file */ static unsigned int php_next_marker(IMAGE_STREAM * stream, int last_marker, int comment_correction, int ff_read) { int a=0, marker; /* get marker byte, swallowing possible padding */ if (last_marker==M_COM && comment_correction) { /* 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 */ /* by the way: some of those companies changed their code now... */ comment_correction = 2; } else { last_marker = 0; comment_correction = 0; } if (ff_read) { a = 1; /* already read 0xff in filetype detection */ } do { if ((marker = stream_getc(stream)) == EOF) { return M_EOI;/* we hit EOF */ } if (last_marker==M_COM && comment_correction>0) { if (marker != 0xFF) { marker = 0xff; comment_correction--; } else { last_marker = M_PSEUDO; /* stop skipping non 0xff for M_COM */ } } if (++a > 25) { /* who knows the maxim amount of 0xff? though 7 */ /* but found other implementations */ return M_EOI; } } while (marker == 0xff); if (a < 2) { return M_EOI; /* at least one 0xff is needed before marker code */ } if ( last_marker==M_COM && comment_correction) { return M_EOI; /* ah illegal: char after COM section not 0xFF */ } return (unsigned int)marker; } /* {{{ php_skip_variable * skip over a variable-length block; assumes proper length marker */ static int php_skip_variable(IMAGE_STREAM * stream) { int length = php_read2(stream); if (length < 2) { return 0; } length = length - 2; stream_seek(stream, length, SEEK_CUR); return 1; } #if 0 /* {{{ php_read_APP */ static int php_read_APP(IMAGE_STREAM * stream, unsigned int marker, zval *info) { unsigned short length; unsigned char *buffer; unsigned char markername[16]; zval *tmp; length = php_read2(stream); if (length < 2) { return 0; } length -= 2; /* length includes itself */ buffer = emalloc(length); if (stream_read(stream, buffer, (long) length) <= 0) { efree(buffer); return 0; } snprintf(markername, sizeof(markername), "APP%d", marker - M_APP0); if (zend_hash_find(Z_ARRVAL_P(info), markername, strlen(markername)+1, (void **) &tmp) == FAILURE) { /* XXX we onyl catch the 1st tag of it's kind! */ add_assoc_stringl(info, markername, buffer, length, 1); } efree(buffer); return 1; } #endif /* {{{ handle_jpeg main loop to parse JPEG structure */ static int handle_jpeg (IMAGE_STREAM * stream, IMAGE_INFO *result) //, zval *info) { unsigned int marker = M_PSEUDO; unsigned short length, ff_read=1; int ret = 1; for (;;) { marker = php_next_marker(stream, marker, 1, ff_read); ff_read = 0; 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: #if 0 if (ret == 1) { #endif /* handle SOFn block */ length = php_read2(stream); stream_getc(stream); result->height = php_read2(stream); result->width = php_read2(stream); stream_getc(stream); result->depth = 24; return 0; #if 0 if (!info || length < 8) { /* if we don't want an extanded info -> return */ return result; } if (stream_seek(stream, length - 8, SEEK_CUR)) { /* file error after info */ return result; } #endif #if 0 } else { if (!php_skip_variable(stream)) { return ret; } } #endif break; case M_APP0: case M_APP1: case M_APP2: case M_APP3: case M_APP4: case M_APP5: case M_APP6: case M_APP7: case M_APP8: case M_APP9: case M_APP10: case M_APP11: case M_APP12: case M_APP13: case M_APP14: case M_APP15: if (!php_skip_variable(stream)) return ret; #if 0 if (info) { if (!php_read_APP(stream, marker, info)) { /* read all the app markes... */ return result; } } else { if (!php_skip_variable(stream)) { return result; } } #endif break; case M_SOS: case M_EOI: return ret; /* we're about to hit image data, or are at EOF. stop processing. */ default: if (!php_skip_variable(stream)) { /* anything else isn't interesting */ return ret; } break; } } return ret; /* perhaps image broken -> no info but size */ } #if 0 /* {{{ php_read4 */ static unsigned int php_read4(IMAGE_STREAM * stream) { unsigned char a[4]; /* just return 0 if we hit the end-of-file */ if ((stream_read(stream, a, sizeof(a))) != sizeof(a)) return 0; return (((unsigned int)a[0]) << 24) + (((unsigned int)a[1]) << 16) + (((unsigned int)a[2]) << 8) + (((unsigned int)a[3])); } /* {{{ JPEG 2000 Marker Codes */ #define JPEG2000_MARKER_PREFIX 0xFF /* All marker codes start with this */ #define JPEG2000_MARKER_SOC 0x4F /* Start of Codestream */ #define JPEG2000_MARKER_SOT 0x90 /* Start of Tile part */ #define JPEG2000_MARKER_SOD 0x93 /* Start of Data */ #define JPEG2000_MARKER_EOC 0xD9 /* End of Codestream */ #define JPEG2000_MARKER_SIZ 0x51 /* Image and tile size */ #define JPEG2000_MARKER_COD 0x52 /* Coding style default */ #define JPEG2000_MARKER_COC 0x53 /* Coding style component */ #define JPEG2000_MARKER_RGN 0x5E /* Region of interest */ #define JPEG2000_MARKER_QCD 0x5C /* Quantization default */ #define JPEG2000_MARKER_QCC 0x5D /* Quantization component */ #define JPEG2000_MARKER_POC 0x5F /* Progression order change */ #define JPEG2000_MARKER_TLM 0x55 /* Tile-part lengths */ #define JPEG2000_MARKER_PLM 0x57 /* Packet length, main header */ #define JPEG2000_MARKER_PLT 0x58 /* Packet length, tile-part header */ #define JPEG2000_MARKER_PPM 0x60 /* Packed packet headers, main header */ #define JPEG2000_MARKER_PPT 0x61 /* Packed packet headers, tile part header */ #define JPEG2000_MARKER_SOP 0x91 /* Start of packet */ #define JPEG2000_MARKER_EPH 0x92 /* End of packet header */ #define JPEG2000_MARKER_CRG 0x63 /* Component registration */ #define JPEG2000_MARKER_COM 0x64 /* Comment */ /* {{{ handle_jpc Main loop to parse JPEG2000 raw codestream structure */ static IMAGE_INFO *handle_jpc(IMAGE_STREAM * stream) { IMAGE_INFO *result = NULL; unsigned short dummy_short; int highest_bit_depth, bit_depth; unsigned char first_marker_id; unsigned int i; /* JPEG 2000 components can be vastly different from one another. Each component can be sampled at a different resolution, use a different colour space, have a seperate colour depth, and be compressed totally differently! This makes giving a single "bit depth" answer somewhat problematic. For this implementation we'll use the highest depth encountered. */ /* Get the single byte that remains after the file type indentification */ first_marker_id = stream_getc(stream); /* Ensure that this marker is SIZ (as is mandated by the standard) */ if (first_marker_id != JPEG2000_MARKER_SIZ) { php_error_docref(NULL, E_WARNING, "JPEG2000 codestream corrupt(Expected SIZ marker not found after SOC)"); return NULL; } result = (IMAGE_INFO *)ecalloc(1, sizeof(IMAGE_INFO)); dummy_short = php_read2(stream); /* Lsiz */ dummy_short = php_read2(stream); /* Rsiz */ result->width = php_read4(stream); /* Xsiz */ result->height = php_read4(stream); /* Ysiz */ #if MBO_0 php_read4(stream); /* XOsiz */ php_read4(stream); /* YOsiz */ php_read4(stream); /* XTsiz */ php_read4(stream); /* YTsiz */ php_read4(stream); /* XTOsiz */ php_read4(stream); /* YTOsiz */ #else if (stream_seek(stream, 24, SEEK_CUR)) { efree(result); return NULL; } #endif result->channels = php_read2(stream); /* Csiz */ if (result->channels < 0 || result->channels > 256) { efree(result); return NULL; } /* Collect bit depth info */ highest_bit_depth = bit_depth = 0; for (i = 0; i < result->channels; i++) { bit_depth = stream_getc(stream); /* Ssiz[i] */ bit_depth++; if (bit_depth > highest_bit_depth) { highest_bit_depth = bit_depth; } stream_getc(stream); /* XRsiz[i] */ stream_getc(stream); /* YRsiz[i] */ } result->bits = highest_bit_depth; return result; } /* {{{ handle_jp2 main loop to parse JPEG 2000 JP2 wrapper format structure */ static IMAGE_INFO *handle_jp2(IMAGE_STREAM *stream) { IMAGE_INFO *result = NULL; unsigned int box_length; unsigned int box_type; char jp2c_box_id[] = {(char)0x6a, (char)0x70, (char)0x32, (char)0x63}; /* JP2 is a wrapper format for JPEG 2000. Data is contained within "boxes". Boxes themselves can be contained within "super-boxes". Super-Boxes can contain super-boxes which provides us with a hierarchical storage system. It is valid for a JP2 file to contain multiple individual codestreams. We'll just look for the first codestream at the root of the box structure and handle that. */ for (;;) { box_length = php_read4(stream); /* LBox */ /* TBox */ if (stream_read(stream, (void *)&box_type, sizeof(box_type)) != sizeof(box_type)) { /* Use this as a general "out of stream" error */ break; } if (box_length == 1) { /* We won't handle XLBoxes */ return NULL; } if (!memcmp(&box_type, jp2c_box_id, 4)) { /* Skip the first 3 bytes to emulate the file type examination */ stream_seek(stream, 3, SEEK_CUR); result = handle_jpc(stream); break; } /* Stop if this was the last box */ if ((int)box_length <= 0) { break; } /* Skip over LBox (Which includes both TBox and LBox itself */ if (stream_seek(stream, box_length - 8, SEEK_CUR)) { break; } } if (result == NULL) { php_error_docref(NULL, E_WARNING, "JP2 file has no codestreams at root level"); } return result; } #endif /* {{{ tiff constants */ const int php_tiff_bytes_per_format[] = {0, 1, 1, 2, 4, 8, 1, 1, 2, 4, 8, 4, 8}; /* uncompressed only */ #define TAG_IMAGEWIDTH 0x0100 #define TAG_IMAGEHEIGHT 0x0101 /* compressed images only */ #define TAG_COMP_IMAGEWIDTH 0xA002 #define TAG_COMP_IMAGEHEIGHT 0xA003 #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 /* {{{ php_ifd_get16u * Convert a 16 bit unsigned value from file's native byte order */ static int php_ifd_get16u(void *Short, int motorola_intel) { if (motorola_intel) { return (((unsigned char *)Short)[0] << 8) | ((unsigned char *)Short)[1]; } else { return (((unsigned char *)Short)[1] << 8) | ((unsigned char *)Short)[0]; } } /* {{{ php_ifd_get16s * Convert a 16 bit signed value from file's native byte order */ static signed short php_ifd_get16s(void *Short, int motorola_intel) { return (signed short)php_ifd_get16u(Short, motorola_intel); } /* {{{ php_ifd_get32s * Convert a 32 bit signed value from file's native byte order */ static int php_ifd_get32s(void *Long, int motorola_intel) { if (motorola_intel) { return ((( char *)Long)[0] << 24) | (((unsigned char *)Long)[1] << 16) | (((unsigned char *)Long)[2] << 8 ) | (((unsigned char *)Long)[3] << 0 ); } else { return ((( char *)Long)[3] << 24) | (((unsigned char *)Long)[2] << 16) | (((unsigned char *)Long)[1] << 8 ) | (((unsigned char *)Long)[0] << 0 ); } } /* {{{ php_ifd_get32u * Convert a 32 bit unsigned value from file's native byte order */ static unsigned php_ifd_get32u(void *Long, int motorola_intel) { return (unsigned)php_ifd_get32s(Long, motorola_intel) & 0xffffffff; } /* {{{ handle_tiff main loop to parse TIFF structure */ static int handle_tiff (IMAGE_STREAM * stream, IMAGE_INFO *result, int motorola_intel) { int i, num_entries; unsigned char *dir_entry; size_t ifd_size, dir_size, entry_value, width=0, height=0, ifd_addr; int entry_tag , entry_type; char *ifd_data, ifd_ptr[4]; if (stream_read(stream, ifd_ptr, 4) != 4) return 1; ifd_addr = php_ifd_get32u(ifd_ptr, motorola_intel); if (stream_seek(stream, ifd_addr-8, SEEK_CUR)) return 1; ifd_size = 2; ifd_data = emalloc(ifd_size); if (stream_read(stream, ifd_data, 2) != 2) { efree(ifd_data); return 1; } num_entries = php_ifd_get16u(ifd_data, motorola_intel); dir_size = 2/*num dir entries*/ +12/*length of entry*/*num_entries +4/* offset to next ifd (points to thumbnail or NULL)*/; ifd_size = dir_size; ifd_data = erealloc(ifd_data,ifd_size); if (stream_read(stream, ifd_data+2, dir_size-2) != dir_size-2) { efree(ifd_data); return 1; } /* now we have the directory we can look how long it should be */ ifd_size = dir_size; for(i=0;iheight = height; result->width = width; result->depth = 24; return 0; } return 1; } #if 0 /* {{{ handle_psd */ static IMAGE_INFO *handle_iff(IMAGE_STREAM * stream) { IMAGE_INFO * result; unsigned char a[10]; int chunkId; int size; short width, height, bits; if (stream_read(stream, a, 8) != 8) { return NULL; } if (strncmp(a+4, "ILBM", 4) && strncmp(a+4, "PBM ", 4)) { return NULL; } /* loop chunks to find BMHD chunk */ do { if (stream_read(stream, a, 8) != 8) { return NULL; } chunkId = php_ifd_get32s(a+0, 1); size = php_ifd_get32s(a+4, 1); if (size < 0) { return NULL; } if ((size & 1) == 1) { size++; } if (chunkId == 0x424d4844) { /* BMHD chunk */ if (size < 9 || stream_read(stream, a, 9) != 9) { return NULL; } width = php_ifd_get16s(a+0, 1); height = php_ifd_get16s(a+2, 1); bits = a[8] & 0xff; if (width > 0 && height > 0 && bits > 0 && bits < 33) { result = (IMAGE_INFO *) ecalloc(1, sizeof(IMAGE_INFO)); result->width = width; result->height = height; result->bits = bits; result->channels = 0; return result; } } else { if (stream_seek(stream, size, SEEK_CUR)) { return NULL; } } } while (1); } /* {{{ php_get_wbmp * int WBMP file format type * byte Header Type * byte Extended Header * byte Header Data (type 00 = multibyte) * byte Header Data (type 11 = name/pairs) * int Number of columns * int Number of rows */ static int php_get_wbmp(IMAGE_STREAM *stream, IMAGE_INFO **result, int check) { int i, width = 0, height = 0; if (stream_rewind(stream)) { return 0; } /* get type */ if (stream_getc(stream) != 0) { return 0; } /* skip header */ do { i = stream_getc(stream); if (i < 0) { return 0; } } while (i & 0x80); /* get width */ do { i = stream_getc(stream); if (i < 0) { return 0; } width = (width << 7) | (i & 0x7f); } while (i & 0x80); /* get height */ do { i = stream_getc(stream); if (i < 0) { return 0; } height = (height << 7) | (i & 0x7f); } while (i & 0x80); /* maximum valid sizes for wbmp (although 127x127 may be a more accurate one) */ if (!height || !width || height > 2048 || width > 2048) { return 0; } if (!check) { (*result)->width = width; (*result)->height = height; } return IMAGE_FILETYPE_WBMP; } /* {{{ handle_wbmp */ static IMAGE_INFO *handle_wbmp(IMAGE_STREAM * stream) { IMAGE_INFO *result = (IMAGE_INFO *) ecalloc(1, sizeof(IMAGE_INFO)); if (!php_get_wbmp(stream, &result, 0)) { efree(result); return NULL; } return result; } #endif #if 0 /* {{{ php_get_xbm */ static int php_get_xbm(IMAGE_STREAM *stream, IMAGE_INFO **result) { char *fline; char *iname; char *type; int value; unsigned int width = 0, height = 0; if (result) { *result = NULL; } if (stream_rewind(stream)) { return 0; } while ((fline=stream_gets(stream, NULL, 0)) != NULL) { iname = estrdup(fline); /* simple way to get necessary buffer of required size */ if (sscanf(fline, "#define %s %d", iname, &value) == 2) { if (!(type = strrchr(iname, '_'))) { type = iname; } else { type++; } if (!strcmp("width", type)) { width = (unsigned int) value; if (height) { efree(iname); break; } } if (!strcmp("height", type)) { height = (unsigned int) value; if (width) { efree(iname); break; } } } efree(fline); efree(iname); } if (fline) { efree(fline); } if (width && height) { if (result) { *result = (IMAGE_INFO *) ecalloc(1, sizeof(IMAGE_INFO)); (*result)->width = width; (*result)->height = height; } return IMAGE_FILETYPE_XBM; } return 0; } /* {{{ handle_xbm */ static IMAGE_INFO *handle_xbm(IMAGE_STREAM * stream) { IMAGE_INFO *result; php_get_xbm(stream, &result); return result; } #endif /* {{{ php_image_type_to_mime_type * Convert internal image_type to mime type */ char *php_image_type_to_mime_type(int image_type) { switch( image_type) { case IMAGE_FILETYPE_GIF: return "image/gif"; case IMAGE_FILETYPE_JPEG: return "image/jpeg"; case IMAGE_FILETYPE_PNG: return "image/png"; /*case IMAGE_FILETYPE_SWF: case IMAGE_FILETYPE_SWC: return "application/x-shockwave-flash"; case IMAGE_FILETYPE_PSD: return "image/psd";*/ case IMAGE_FILETYPE_BMP: return "image/bmp"; case IMAGE_FILETYPE_TIFF_II: case IMAGE_FILETYPE_TIFF_MM: return "image/tiff"; /*case IMAGE_FILETYPE_IFF: return "image/iff"; case IMAGE_FILETYPE_WBMP: return "image/vnd.wap.wbmp"; case IMAGE_FILETYPE_JPC: return "application/octet-stream"; case IMAGE_FILETYPE_JP2: return "image/jp2"; case IMAGE_FILETYPE_XBM: return "image/xbm";*/ default: case IMAGE_FILETYPE_UNKNOWN: return "application/octet-stream"; /* suppose binary format */ } } #if 0 /* {{{ proto string image_type_to_mime_type(int imagetype) Get Mime-Type for image-type returned by getimagesize, exif_read_data, exif_thumbnail, exif_imagetype */ PHP_FUNCTION(image_type_to_mime_type) { zval **p_image_type; int arg_c = ZEND_NUM_ARGS(); if ((arg_c!=1) || zend_get_parameters_ex(arg_c, &p_image_type) == FAILURE) { RETVAL_FALSE; WRONG_PARAM_COUNT; } convert_to_long_ex(p_image_type); ZVAL_STRING(return_value, (char*)php_image_type_to_mime_type(Z_LVAL_PP(p_image_type)), 1); } /* {{{ proto string image_type_to_extension(int imagetype [, bool include_dot]) Get file extension for image-type returned by getimagesize, exif_read_data, exif_thumbnail, exif_imagetype */ PHP_FUNCTION(image_type_to_extension) { long image_type; zend_bool inc_dot=1; if (zend_parse_parameters(ZEND_NUM_ARGS(), "l|b", &image_type, &inc_dot) == FAILURE) { RETURN_FALSE; } switch (image_type) { case IMAGE_FILETYPE_GIF: RETURN_STRING(".gif" + !inc_dot, 1); case IMAGE_FILETYPE_JPEG: RETURN_STRING(".jpeg" + !inc_dot, 1); case IMAGE_FILETYPE_PNG: RETURN_STRING(".png" + !inc_dot, 1); case IMAGE_FILETYPE_SWF: case IMAGE_FILETYPE_SWC: RETURN_STRING(".swf" + !inc_dot, 1); case IMAGE_FILETYPE_PSD: RETURN_STRING(".psd" + !inc_dot, 1); case IMAGE_FILETYPE_BMP: case IMAGE_FILETYPE_WBMP: RETURN_STRING(".bmp" + !inc_dot, 1); case IMAGE_FILETYPE_TIFF_II: case IMAGE_FILETYPE_TIFF_MM: RETURN_STRING(".tiff" + !inc_dot, 1); case IMAGE_FILETYPE_IFF: RETURN_STRING(".iff" + !inc_dot, 1); case IMAGE_FILETYPE_JPC: RETURN_STRING(".jpc" + !inc_dot, 1); case IMAGE_FILETYPE_JP2: RETURN_STRING(".jp2" + !inc_dot, 1); case IMAGE_FILETYPE_JPX: RETURN_STRING(".jpx" + !inc_dot, 1); case IMAGE_FILETYPE_JB2: RETURN_STRING(".jb2" + !inc_dot, 1); case IMAGE_FILETYPE_XBM: RETURN_STRING(".xbm" + !inc_dot, 1); } RETURN_FALSE; } #endif /* {{{ php_imagetype detect filetype from first bytes */ int php_getimagetype(IMAGE_STREAM * stream) { char filetype[12]; if((stream_read(stream, filetype, 3)) != 3) { IMAGE_error = "Read error"; return IMAGE_FILETYPE_ERROR; } /* BYTES READ: 3 */ if (!memcmp(filetype, _signature_gif, 3)) { return IMAGE_FILETYPE_GIF; } else if (!memcmp(filetype, _signature_jpg, 3)) { return IMAGE_FILETYPE_JPEG; } else if (!memcmp(filetype, _signature_png, 3)) { if (stream_read(stream, filetype+3, 5) != 5) { IMAGE_error = "Read error"; return IMAGE_FILETYPE_ERROR; } if (!memcmp(filetype, _signature_png, 8)) { return IMAGE_FILETYPE_PNG; } else { IMAGE_error = "PNG file corrupted by ASCII conversion"; return IMAGE_FILETYPE_ERROR; } /* } else if (!memcmp(filetype, _signature_swf, 3)) { return IMAGE_FILETYPE_SWF; } else if (!memcmp(filetype, _signature_swc, 3)) { return IMAGE_FILETYPE_SWC; } else if (!memcmp(filetype, _signature_psd, 3)) { return IMAGE_FILETYPE_PSD; */ } else if (!memcmp(filetype, _signature_bmp, 2)) { return IMAGE_FILETYPE_BMP; /* } else if (!memcmp(filetype, _signature_jpc, 3)) { return IMAGE_FILETYPE_JPC; */ } if (stream_read(stream, filetype+3, 1) != 1) { IMAGE_error = "Read error"; return IMAGE_FILETYPE_ERROR; } /* BYTES READ: 4 */ if (!memcmp(filetype, _signature_tif_ii, 4)) { return IMAGE_FILETYPE_TIFF_II; } else if (!memcmp(filetype, _signature_tif_mm, 4)) { return IMAGE_FILETYPE_TIFF_MM; } /* if (!memcmp(filetype, _signature_iff, 4)) { return IMAGE_FILETYPE_IFF; }*/ #if 0 if (stream_read(stream, filetype+4, 8) != 8) { IMAGE_error = "Read error"; return IMAGE_FILETYPE_ERROR; } /* BYTES READ: 12 */ if (!memcmp(filetype, _signature_jp2, 12)) { return IMAGE_FILETYPE_JP2; } /* AFTER ALL ABOVE FAILED */ if (php_get_wbmp(stream, NULL, 1)) { return IMAGE_FILETYPE_WBMP; } if (php_get_xbm(stream, NULL)) { return IMAGE_FILETYPE_XBM; } #endif return IMAGE_FILETYPE_UNKNOWN; } int IMAGE_get_info(IMAGE_STREAM *stream, IMAGE_INFO *result) { int itype = 0; int err; itype = php_getimagetype(stream); if (itype == IMAGE_FILETYPE_ERROR) return 1; result->type = php_image_type_to_mime_type(itype); //fprintf(stderr, "type = %s\n", result->type); switch( itype) { case IMAGE_FILETYPE_GIF: err = handle_gif (stream, result); break; case IMAGE_FILETYPE_JPEG: err = handle_jpeg(stream, result); break; case IMAGE_FILETYPE_PNG: err = handle_png(stream, result); break; /* case IMAGE_FILETYPE_SWF: result = handle_swf(stream); break; case IMAGE_FILETYPE_SWC: #if HAVE_ZLIB && !defined(COMPILE_DL_ZLIB) result = handle_swc(stream); #else php_error_docref(NULL, E_NOTICE, "The image is a compressed SWF file, but you do not have a static version of the zlib extension enabled"); #endif break; case IMAGE_FILETYPE_PSD: result = handle_psd(stream); break;*/ case IMAGE_FILETYPE_BMP: err = handle_bmp(stream, result); break; case IMAGE_FILETYPE_TIFF_II: err = handle_tiff(stream, result, 0); break; case IMAGE_FILETYPE_TIFF_MM: err = handle_tiff(stream, result, 1); break; /*case IMAGE_FILETYPE_JPC: result = handle_jpc(stream); break; case IMAGE_FILETYPE_JP2: result = handle_jp2(stream); break; case IMAGE_FILETYPE_IFF: result = handle_iff(stream); break; case IMAGE_FILETYPE_WBMP: result = handle_wbmp(stream); break; case IMAGE_FILETYPE_XBM: result = handle_xbm(stream); break;*/ default: case IMAGE_FILETYPE_UNKNOWN: err = 0; break; } if (err) IMAGE_error = "Cannot read file"; return err; }