diff options
Diffstat (limited to 'ext/zlib/zlib.c')
| -rw-r--r-- | ext/zlib/zlib.c | 1003 |
1 files changed, 0 insertions, 1003 deletions
diff --git a/ext/zlib/zlib.c b/ext/zlib/zlib.c deleted file mode 100644 index edf031e242..0000000000 --- a/ext/zlib/zlib.c +++ /dev/null @@ -1,1003 +0,0 @@ -/* - +----------------------------------------------------------------------+ - | PHP Version 4 | - +----------------------------------------------------------------------+ - | Copyright (c) 1997-2002 The PHP Group | - +----------------------------------------------------------------------+ - | This source file is subject to version 2.02 of the PHP license, | - | that is bundled with this package in the file LICENSE, and is | - | available at through the world-wide-web at | - | http://www.php.net/license/2_02.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 <rasmus@lerdorf.on.ca> | - | Stefan Röhrich <sr@linux.de> | - | Zeev Suraski <zeev@zend.com> | - | Jade Nicoletti <nicoletti@nns.ch> | - +----------------------------------------------------------------------+ - */ -/* $Id$ */ -#define IS_EXT_MODULE - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include "php.h" -#include "SAPI.h" -#include "php_ini.h" - -#include <stdlib.h> -#include <errno.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <fcntl.h> -#ifdef PHP_WIN32 -#include <windows.h> -#include <winsock.h> -#define O_RDONLY _O_RDONLY -#include "win32/param.h" -#else -#include <sys/param.h> -/* #include <sys/uio.h> */ -#endif -#include "ext/standard/head.h" -#include "safe_mode.h" -#include "ext/standard/php_standard.h" -#include "ext/standard/info.h" -#include "php_zlib.h" -#include "fopen_wrappers.h" -#if HAVE_PWD_H -#ifdef PHP_WIN32 -#include "win32/pwd.h" -#else -#include <pwd.h> -#endif -#endif -#if defined(HAVE_UNISTD_H) && defined(PHP_WIN32) -#undef HAVE_UNISTD_H -#endif - - -#ifdef COMPILE_DL_ZLIB -#ifndef PUTS -#define PUTS(a) php_printf("%s",a) -#endif -#ifndef PUTC -#define PUTC(a) PUTS(a) -#endif -#ifndef PHPWRITE -#define PHPWRITE(a,n) php_write((a),(n) TSRMLS_CC) -#endif -#endif - -#define OS_CODE 0x03 /* FIXME */ -#define CODING_GZIP 1 -#define CODING_DEFLATE 2 -#define GZIP_HEADER_LENGTH 10 -#define GZIP_FOOTER_LENGTH 8 - -/* True globals, no need for thread safety */ -static int gz_magic[2] = {0x1f, 0x8b}; /* gzip magic header */ - -/* {{{ php_zlib_functions[] - */ -function_entry php_zlib_functions[] = { - PHP_FE(readgzfile, NULL) - PHP_FALIAS(gzrewind, rewind, NULL) - PHP_FALIAS(gzclose, fclose, NULL) - PHP_FALIAS(gzeof, feof, NULL) - PHP_FALIAS(gzgetc, fgetc, NULL) - PHP_FALIAS(gzgets, fgets, NULL) - PHP_FALIAS(gzgetss, fgetss, NULL) - PHP_FALIAS(gzread, fread, NULL) - PHP_FE(gzopen, NULL) - PHP_FALIAS(gzpassthru, fpassthru, NULL) - PHP_FALIAS(gzseek, fseek, NULL) - PHP_FALIAS(gztell, ftell, NULL) - PHP_FALIAS(gzwrite, fwrite, NULL) - PHP_FALIAS(gzputs, fwrite, NULL) - PHP_FE(gzfile, NULL) - PHP_FE(gzcompress, NULL) - PHP_FE(gzuncompress, NULL) - PHP_FE(gzdeflate, NULL) - PHP_FE(gzinflate, NULL) - PHP_FE(gzencode, NULL) - PHP_FE(ob_gzhandler, NULL) - {NULL, NULL, NULL} -}; -/* }}} */ - -/* {{{ php_zlib_module_entry - */ -zend_module_entry php_zlib_module_entry = { - STANDARD_MODULE_HEADER, - "zlib", - php_zlib_functions, - PHP_MINIT(zlib), - PHP_MSHUTDOWN(zlib), - PHP_RINIT(zlib), - NULL, - PHP_MINFO(zlib), - "1.1", - STANDARD_MODULE_PROPERTIES -}; -/* }}} */ - -ZEND_DECLARE_MODULE_GLOBALS(zlib) - -#ifdef COMPILE_DL_ZLIB -ZEND_GET_MODULE(php_zlib) -#endif - -/* {{{ OnUpdate_zlib_output_compression */ -static PHP_INI_MH(OnUpdate_zlib_output_compression) -{ - char *ini_value; - - ini_value = php_ini_string("output_handler", sizeof("output_handler"), 0); - if (ini_value != NULL && strlen(ini_value) != 0 && - new_value != NULL && strlen(new_value) != 0 ) { - php_error(E_CORE_ERROR,"Cannot use both zlib.output_compression and output_handler together!!"); - return FAILURE; - } - - OnUpdateInt(entry, new_value, new_value_length, mh_arg1, mh_arg2, mh_arg3, stage TSRMLS_CC); - - return SUCCESS; -} -/* }}} */ - -/* {{{ OnUpdate_zlib_output_compression_level */ -static PHP_INI_MH(OnUpdate_zlib_output_compression_level) -{ - OnUpdateInt(entry, new_value, new_value_length, mh_arg1, mh_arg2, mh_arg3, stage TSRMLS_CC); - - return SUCCESS; -} -/* }}} */ - - -PHP_INI_BEGIN() - STD_PHP_INI_BOOLEAN("zlib.output_compression", "0", PHP_INI_SYSTEM|PHP_INI_PERDIR, OnUpdate_zlib_output_compression, output_compression, zend_zlib_globals, zlib_globals) - STD_PHP_INI_ENTRY("zlib.output_compression_level", "-1", PHP_INI_ALL, OnUpdate_zlib_output_compression_level, output_compression_level, zend_zlib_globals, zlib_globals) -PHP_INI_END() - -#ifdef ZTS -/* {{{ php_zlib_init_globals - */ -static void php_zlib_init_globals(zend_zlib_globals *zlib_globals_p TSRMLS_DC) -{ -} -/* }}} */ -#endif - -/* {{{ PHP_MINIT_FUNCTION - */ -PHP_MINIT_FUNCTION(zlib) -{ -#ifdef ZTS - ts_allocate_id(&zlib_globals_id, sizeof(zend_zlib_globals), (ts_allocate_ctor) php_zlib_init_globals, NULL); -#endif - php_register_url_stream_wrapper("compress.zlib", &php_stream_gzip_wrapper TSRMLS_CC); - - REGISTER_LONG_CONSTANT("FORCE_GZIP", CODING_GZIP, CONST_CS | CONST_PERSISTENT); - REGISTER_LONG_CONSTANT("FORCE_DEFLATE", CODING_DEFLATE, CONST_CS | CONST_PERSISTENT); - - REGISTER_INI_ENTRIES(); - - return SUCCESS; -} -/* }}} */ - -/* {{{ PHP_RINIT_FUNCTION - */ -PHP_RINIT_FUNCTION(zlib) -{ - ZLIBG(ob_gzhandler_status) = 0; - switch (ZLIBG(output_compression)) { - case 0: - break; - case 1: - php_enable_output_compression(4096 TSRMLS_CC); - break; - default: - php_enable_output_compression(ZLIBG(output_compression) TSRMLS_CC); - } - return SUCCESS; -} -/* }}} */ - -/* {{{ PHP_MSHUTDOWN_FUNCTION - */ -PHP_MSHUTDOWN_FUNCTION(zlib) -{ - php_unregister_url_stream_wrapper("zlib" TSRMLS_CC); - - UNREGISTER_INI_ENTRIES(); - - return SUCCESS; -} -/* }}} */ - -/* {{{ PHP_MINFO_FUNCTION - */ -PHP_MINFO_FUNCTION(zlib) -{ - php_info_print_table_start(); - php_info_print_table_row(2, "ZLib Support", "enabled"); - php_info_print_table_row(2, "'zlib:' fopen wrapper", "enabled"); - php_info_print_table_row(2, "Compiled Version", ZLIB_VERSION ); - php_info_print_table_row(2, "Linked Version", (char *)zlibVersion() ); - php_info_print_table_end(); - - DISPLAY_INI_ENTRIES(); -} -/* }}} */ - -/* {{{ proto array gzfile(string filename [, int use_include_path]) - Read und uncompress entire .gz-file into an array */ -PHP_FUNCTION(gzfile) -{ - pval **filename, **arg2; - char *slashed, buf[8192]; - register int i=0; - int use_include_path = 0; - php_stream *stream; - - /* check args */ - switch (ZEND_NUM_ARGS()) { - case 1: - if (zend_get_parameters_ex(1,&filename) == FAILURE) { - WRONG_PARAM_COUNT; - } - break; - case 2: - if (zend_get_parameters_ex(2,&filename,&arg2) == FAILURE) { - WRONG_PARAM_COUNT; - } - convert_to_long_ex(arg2); - use_include_path = Z_LVAL_PP(arg2)?USE_PATH:0; - break; - default: - WRONG_PARAM_COUNT; - } - convert_to_string_ex(filename); - - /* using a stream here is a bit more efficient (resource wise) than php_gzopen_wrapper */ - stream = php_stream_gzopen(NULL, Z_STRVAL_PP(filename), "rb", use_include_path|ENFORCE_SAFE_MODE|REPORT_ERRORS, NULL, NULL STREAMS_CC TSRMLS_CC); - if (stream == NULL) { - php_error(E_WARNING,"gzFile(\"%s\") - %s",Z_STRVAL_PP(filename),strerror(errno)); - RETURN_FALSE; - } - - /* Initialize return array */ - if (array_init(return_value) == FAILURE) { - RETURN_FALSE; - } - - /* Now loop through the file and do the magic quotes thing if needed */ - memset(buf,0,sizeof(buf)); - while(php_stream_gets(stream, buf, sizeof(buf)-1) != NULL) { - if (PG(magic_quotes_runtime)) { - int len; - - slashed = php_addslashes(buf,0,&len,0 TSRMLS_CC); /* 0 = don't free source string */ - add_index_stringl(return_value, i++, slashed, len, 0); - } else { - add_index_string(return_value, i++, buf, 1); - } - } - php_stream_close(stream); -} -/* }}} */ - -/* {{{ proto int gzopen(string filename, string mode [, int use_include_path]) - Open a .gz-file and return a .gz-file pointer */ -PHP_FUNCTION(gzopen) -{ - pval **arg1, **arg2, **arg3; - php_stream *stream; - char *p; - int use_include_path = 0; - - switch(ZEND_NUM_ARGS()) { - case 2: - if (zend_get_parameters_ex(2,&arg1,&arg2) == FAILURE) { - WRONG_PARAM_COUNT; - } - break; - case 3: - if (zend_get_parameters_ex(3,&arg1,&arg2,&arg3) == FAILURE) { - WRONG_PARAM_COUNT; - } - convert_to_long_ex(arg3); - use_include_path = Z_LVAL_PP(arg3)?USE_PATH:0; - break; - default: - WRONG_PARAM_COUNT; - } - convert_to_string_ex(arg1); - convert_to_string_ex(arg2); - p = estrndup(Z_STRVAL_PP(arg2),Z_STRLEN_PP(arg2)); - - stream = php_stream_gzopen(NULL, Z_STRVAL_PP(arg1), p, use_include_path|ENFORCE_SAFE_MODE, NULL, NULL STREAMS_CC TSRMLS_CC); - if (!stream) { - RETURN_FALSE; - } - efree(p); - php_stream_to_zval(stream, return_value); -} -/* }}} */ - -/* - * Read a file and write the ouput to stdout - */ -/* {{{ proto int readgzfile(string filename [, int use_include_path]) - Output a .gz-file */ -PHP_FUNCTION(readgzfile) -{ - pval **arg1, **arg2; - php_stream * stream; - int size; - int use_include_path = 0; - - - /* check args */ - switch (ZEND_NUM_ARGS()) { - case 1: - if (zend_get_parameters_ex(1,&arg1) == FAILURE) { - WRONG_PARAM_COUNT; - } - break; - case 2: - if (zend_get_parameters_ex(2,&arg1,&arg2) == FAILURE) { - WRONG_PARAM_COUNT; - } - convert_to_long_ex(arg2); - use_include_path = Z_LVAL_PP(arg2)?USE_PATH:0; - break; - default: - WRONG_PARAM_COUNT; - } - convert_to_string_ex(arg1); - - stream = php_stream_gzopen(NULL, Z_STRVAL_PP(arg1), "rb", use_include_path|ENFORCE_SAFE_MODE, NULL, NULL STREAMS_CC TSRMLS_CC); - if (!stream) { - RETURN_FALSE; - } - size = php_stream_passthru(stream); - php_stream_close(stream); - RETURN_LONG(size); -} -/* }}} */ - -/* {{{ proto string gzcompress(string data [, int level]) - Gzip-compress a string */ -PHP_FUNCTION(gzcompress) -{ - zval **data, **zlimit = NULL; - int limit,status; - unsigned long l2; - char *s2; - - switch (ZEND_NUM_ARGS()) { - case 1: - if (zend_get_parameters_ex(1, &data) == FAILURE) - WRONG_PARAM_COUNT; - limit=-1; - break; - case 2: - if (zend_get_parameters_ex(2, &data, &zlimit) == FAILURE) - WRONG_PARAM_COUNT; - convert_to_long_ex(zlimit); - limit = Z_LVAL_PP(zlimit); - if((limit<0)||(limit>9)) { - php_error(E_WARNING,"gzcompress: compression level must be within 0..9"); - RETURN_FALSE; - } - break; - default: - WRONG_PARAM_COUNT; - } - convert_to_string_ex(data); - - l2 = Z_STRLEN_PP(data) + (Z_STRLEN_PP(data)/1000) + 15 + 1; /* room for \0 */ - s2 = (char *) emalloc(l2); - if(! s2) RETURN_FALSE; - - if(limit>=0) { - status = compress2(s2,&l2,Z_STRVAL_PP(data), Z_STRLEN_PP(data),limit); - } else { - status = compress(s2,&l2,Z_STRVAL_PP(data), Z_STRLEN_PP(data)); - } - - if (status==Z_OK) { - s2 = erealloc(s2,l2 + 1); - s2[l2] = '\0'; - RETURN_STRINGL(s2, l2, 0); - } else { - efree(s2); - php_error(E_WARNING,"gzcompress: %s",zError(status)); - RETURN_FALSE; - } -} -/* }}} */ - -/* {{{ proto string gzuncompress(string data, int length) - Unzip a gzip-compressed string */ -PHP_FUNCTION(gzuncompress) -{ - zval **data, **zlimit = NULL; - int status,factor=1,maxfactor=16; - unsigned long plength=0,length; - char *s1=NULL,*s2=NULL; - - switch (ZEND_NUM_ARGS()) { - case 1: - if (zend_get_parameters_ex(1, &data) == FAILURE) - WRONG_PARAM_COUNT; - length=0; - break; - case 2: - if (zend_get_parameters_ex(2, &data, &zlimit) == FAILURE) - WRONG_PARAM_COUNT; - convert_to_long_ex(zlimit); - if(Z_LVAL_PP(zlimit)<=0) { - php_error(E_WARNING,"gzuncompress: length must be greater zero"); - RETURN_FALSE; - } - plength = Z_LVAL_PP(zlimit); - break; - default: - WRONG_PARAM_COUNT; - } - convert_to_string_ex(data); - - /* - 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 { - length=plength?plength:Z_STRLEN_PP(data)*(1<<factor++); - s2 = (char *) erealloc(s1,length); - if(! s2) { if(s1) efree(s1); RETURN_FALSE; } - status = uncompress(s2, &length ,Z_STRVAL_PP(data), Z_STRLEN_PP(data)); - s1=s2; - } while((status==Z_BUF_ERROR)&&(!plength)&&(factor<maxfactor)); - - if (status==Z_OK) { - s2 = erealloc(s2, length + 1); /* space for \0 */ - s2[ length ] = '\0'; - RETURN_STRINGL(s2, length, 0); - } else { - efree(s2); - php_error(E_WARNING,"gzuncompress: %s",zError(status)); - RETURN_FALSE; - } -} -/* }}} */ - -/* {{{ proto string gzdeflate(string data [, int level]) - Gzip-compress a string */ -PHP_FUNCTION(gzdeflate) -{ - zval **data, **zlimit = NULL; - int level,status; - z_stream stream; - char *s2; - - switch (ZEND_NUM_ARGS()) { - case 1: - if (zend_get_parameters_ex(1, &data) == FAILURE) - WRONG_PARAM_COUNT; - level=Z_DEFAULT_COMPRESSION; - break; - case 2: - if (zend_get_parameters_ex(2, &data, &zlimit) == FAILURE) - WRONG_PARAM_COUNT; - convert_to_long_ex(zlimit); - level = Z_LVAL_PP(zlimit); - if((level<0)||(level>9)) { - php_error(E_WARNING,"gzdeflate: compression level must be within 0..9"); - RETURN_FALSE; - } - break; - default: - WRONG_PARAM_COUNT; - } - convert_to_string_ex(data); - - stream.data_type = Z_ASCII; - stream.zalloc = (alloc_func) Z_NULL; - stream.zfree = (free_func) Z_NULL; - stream.opaque = (voidpf) Z_NULL; - - stream.next_in = (Bytef*) Z_STRVAL_PP(data); - stream.avail_in = Z_STRLEN_PP(data); - - stream.avail_out = stream.avail_in + (stream.avail_in/1000) + 15 + 1; /* room for \0 */ - s2 = (char *) emalloc(stream.avail_out); - if(!s2) RETURN_FALSE; - stream.next_out = s2; - - /* init with -MAX_WBITS disables the zlib internal headers */ - status = deflateInit2(&stream, level, Z_DEFLATED, -MAX_WBITS, MAX_MEM_LEVEL, 0); - if (status == Z_OK) { - - status = deflate(&stream, Z_FINISH); - if (status != Z_STREAM_END) { - deflateEnd(&stream); - if (status == Z_OK) { - status = Z_BUF_ERROR; - } - } else { - status = deflateEnd(&stream); - } - } - - if (status==Z_OK) { - s2 = erealloc(s2,stream.total_out+1); /* resize to buffer to the "right" size */ - s2[ stream.total_out ] = '\0'; - RETURN_STRINGL(s2, stream.total_out, 0); - } else { - efree(s2); - php_error(E_WARNING,"gzdeflate: %s",zError(status)); - RETURN_FALSE; - } -} -/* }}} */ - -/* {{{ proto string gzinflate(string data [, int length]) - Unzip a gzip-compressed string */ -PHP_FUNCTION(gzinflate) -{ - zval **data, **zlimit = NULL; - int status,factor=1,maxfactor=16; - unsigned long plength=0,length; - char *s1=NULL,*s2=NULL; - z_stream stream; - - switch (ZEND_NUM_ARGS()) { - case 1: - if (zend_get_parameters_ex(1, &data) == FAILURE) - WRONG_PARAM_COUNT; - length=0; - break; - case 2: - if (zend_get_parameters_ex(2, &data, &zlimit) == FAILURE) - WRONG_PARAM_COUNT; - convert_to_long_ex(zlimit); - if(Z_LVAL_PP(zlimit)<=0) { - php_error(E_WARNING,"gzinflate: length must be greater zero"); - RETURN_FALSE; - } - plength = Z_LVAL_PP(zlimit); - break; - default: - WRONG_PARAM_COUNT; - } - convert_to_string_ex(data); - - /* - stream.avail_out wants to know the output data length - if none was given as a parameter - we try from input length * 2 up to input length * 2^16 - doubling it whenever it wasn't big enough - that should be enaugh for all real life cases - */ - - stream.zalloc = (alloc_func) Z_NULL; - stream.zfree = (free_func) Z_NULL; - - do { - length=plength?plength:Z_STRLEN_PP(data)*(1<<factor++); - s2 = (char *) erealloc(s1,length); - if(! s2) { if(s1) efree(s1); RETURN_FALSE; } - - stream.next_in = (Bytef*) Z_STRVAL_PP(data); - stream.avail_in = (uInt) Z_STRLEN_PP(data) + 1; /* there is room for \0 */ - - stream.next_out = s2; - stream.avail_out = (uInt) length; - - /* init with -MAX_WBITS disables the zlib internal headers */ - status = inflateInit2(&stream, -MAX_WBITS); - if (status == Z_OK) { - status = inflate(&stream, Z_FINISH); - if (status != Z_STREAM_END) { - inflateEnd(&stream); - if (status == Z_OK) { - status = Z_BUF_ERROR; - } - } else { - status = inflateEnd(&stream); - } - } - s1=s2; - - } while((status==Z_BUF_ERROR)&&(!plength)&&(factor<maxfactor)); - - if(status==Z_OK) { - s2 = erealloc(s2, stream.total_out + 1); /* room for \0 */ - s2[ stream.total_out ] = '\0'; - RETURN_STRINGL(s2, stream.total_out, 0); - } else { - efree(s2); - php_error(E_WARNING,"gzinflate: %s",zError(status)); - RETURN_FALSE; - } -} -/* }}} */ - -/* {{{ php_do_deflate - */ -static int php_do_deflate(uint str_length, Bytef **p_buffer, uint *p_buffer_len, zend_bool do_start, zend_bool do_end TSRMLS_DC) -{ - Bytef *buffer; - uInt prev_outlen, outlen; - int err; - int start_offset = (do_start?10:0); - int end_offset = (do_end?8:0); - - outlen = sizeof(char) * (str_length * 1.001 + 12) + 1; /* leave some room for a trailing \0 */ - if ((outlen+start_offset+end_offset) > *p_buffer_len) { - buffer = (Bytef *) emalloc(outlen+start_offset+end_offset); - } else { - buffer = *p_buffer; - } - - ZLIBG(stream).next_out = buffer+start_offset; - ZLIBG(stream).avail_out = outlen; - - - err = deflate(&ZLIBG(stream), Z_SYNC_FLUSH); - while (err == Z_OK && !ZLIBG(stream).avail_out) { - prev_outlen = outlen; - outlen *= 3; - if ((outlen+start_offset+end_offset) > *p_buffer_len) { - buffer = erealloc(buffer, outlen+start_offset+end_offset); - } - - ZLIBG(stream).next_out = buffer+start_offset + prev_outlen; - ZLIBG(stream).avail_out = prev_outlen * 2; - - err = deflate(&ZLIBG(stream), Z_SYNC_FLUSH); - } - - if (do_end) { - err = deflate(&ZLIBG(stream), Z_FINISH); - } - - - *p_buffer = buffer; - *p_buffer_len = outlen - ZLIBG(stream).avail_out; - - return err; -} -/* }}} */ - -/* {{{ php_deflate_string - */ -int php_deflate_string(const char *str, uint str_length, char **newstr, uint *new_length, int coding, zend_bool do_start, zend_bool do_end, int compression_level TSRMLS_DC) -{ - int err; - - ZLIBG(compression_coding) = coding; - - if (do_start) { - ZLIBG(stream).zalloc = Z_NULL; - ZLIBG(stream).zfree = Z_NULL; - ZLIBG(stream).opaque = Z_NULL; - switch (coding) { - case CODING_GZIP: - /* windowBits is passed < 0 to suppress zlib header & trailer */ - if (deflateInit2(&ZLIBG(stream), compression_level, Z_DEFLATED, - -MAX_WBITS, MAX_MEM_LEVEL, Z_DEFAULT_STRATEGY) - != Z_OK) { - /* TODO: print out error */ - return FAILURE; - } - - ZLIBG(crc) = crc32(0L, Z_NULL, 0); - break; - case CODING_DEFLATE: - if (deflateInit(&ZLIBG(stream), compression_level) != Z_OK) { - /* TODO: print out error */ - return FAILURE; - } - break; - } - } - - - ZLIBG(stream).next_in = (Bytef*) str; - ZLIBG(stream).avail_in = (uInt) str_length; - - if (ZLIBG(compression_coding) == 1) { - ZLIBG(crc) = crc32(ZLIBG(crc), (const Bytef *) str, str_length); - } - - err = php_do_deflate(str_length, (Bytef **) newstr, new_length, do_start, do_end TSRMLS_CC); - /* TODO: error handling (err may be Z_STREAM_ERROR, Z_BUF_ERROR, ?) */ - - if (do_start) { - /* Write a very simple .gz header: */ - (*newstr)[0] = gz_magic[0]; - (*newstr)[1] = gz_magic[1]; - (*newstr)[2] = Z_DEFLATED; - (*newstr)[3] = (*newstr)[4] = (*newstr)[5] = (*newstr)[6] = (*newstr)[7] = (*newstr)[8] = 0; - (*newstr)[9] = OS_CODE; - *new_length += 10; - } - if (do_end) { - if (ZLIBG(compression_coding) == 1) { - char *trailer = (*newstr)+(*new_length); - - /* write crc & stream.total_in in LSB order */ - trailer[0] = (char) ZLIBG(crc) & 0xFF; - trailer[1] = (char) (ZLIBG(crc) >> 8) & 0xFF; - trailer[2] = (char) (ZLIBG(crc) >> 16) & 0xFF; - trailer[3] = (char) (ZLIBG(crc) >> 24) & 0xFF; - trailer[4] = (char) ZLIBG(stream).total_in & 0xFF; - trailer[5] = (char) (ZLIBG(stream).total_in >> 8) & 0xFF; - trailer[6] = (char) (ZLIBG(stream).total_in >> 16) & 0xFF; - trailer[7] = (char) (ZLIBG(stream).total_in >> 24) & 0xFF; - trailer[8] = '\0'; - *new_length += 8; - } - deflateEnd(&ZLIBG(stream)); - } - - return SUCCESS; -} -/* }}} */ - -/* {{{ proto string gzencode(string data [, int level [, int encoding_mode]]) - GZ encode a string */ -PHP_FUNCTION(gzencode) -{ - char *data, *s2; - int data_len; - int level = Z_DEFAULT_COMPRESSION, coding = CODING_GZIP; - int status; - z_stream stream; - - if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|ll", &data, &data_len, &level, &coding) == FAILURE) { - return; - } - - if((level<-1)||(level>9)) { - php_error(E_WARNING,"gzencode: compression level must be within -1..9"); - RETURN_FALSE; - } - - if((coding!=CODING_GZIP)&&(coding!=CODING_DEFLATE)) { - php_error(E_WARNING,"gzencode: encoding mode must be FORCE_GZIP or FORCE_DEFLATE"); - RETURN_FALSE; - } - - stream.zalloc = Z_NULL; - stream.zfree = Z_NULL; - stream.opaque = Z_NULL; - - stream.next_in = (Bytef*) data; - stream.avail_in = data_len; - - stream.avail_out = stream.avail_in + (stream.avail_in/1000) + 15 + 1; /* room for \0 */ - s2 = (char *) emalloc(stream.avail_out+GZIP_HEADER_LENGTH+(coding==CODING_GZIP?GZIP_FOOTER_LENGTH:0)); - if(!s2) - RETURN_FALSE; - - /* add gzip file header */ - s2[0] = gz_magic[0]; - s2[1] = gz_magic[1]; - s2[2] = Z_DEFLATED; - s2[3] = s2[4] = s2[5] = s2[6] = s2[7] = s2[8] = 0; /* time set to 0 */ - s2[9] = OS_CODE; - - stream.next_out = &(s2[GZIP_HEADER_LENGTH]); - - switch (coding) { - case CODING_GZIP: - /* windowBits is passed < 0 to suppress zlib header & trailer */ - if ((status = deflateInit2(&stream, level, Z_DEFLATED, - -MAX_WBITS, MAX_MEM_LEVEL, - Z_DEFAULT_STRATEGY)) - != Z_OK) { - php_error(E_WARNING,"gzencode: %s", zError(status)); - RETURN_FALSE; - } - - break; - case CODING_DEFLATE: - if ((status = deflateInit(&stream, level)) != Z_OK) { - php_error(E_WARNING,"gzencode: %s", zError(status)); - RETURN_FALSE; - } - break; - } - - status = deflate(&stream, Z_FINISH); - if (status != Z_STREAM_END) { - deflateEnd(&stream); - if (status == Z_OK) { - status = Z_BUF_ERROR; - } - } else { - status = deflateEnd(&stream); - } - - if (status==Z_OK) { - s2 = erealloc(s2,stream.total_out+GZIP_HEADER_LENGTH+(coding==CODING_GZIP?GZIP_FOOTER_LENGTH:0)+1); /* resize to buffer to the "right" size */ - if (coding == CODING_GZIP) { - char *trailer = s2+(stream.total_out+GZIP_HEADER_LENGTH); - uLong crc = crc32(0L, Z_NULL, 0); - - crc = crc32(crc, (const Bytef *) data, data_len); - - /* write crc & stream.total_in in LSB order */ - trailer[0] = (char) crc & 0xFF; - trailer[1] = (char) (crc >> 8) & 0xFF; - trailer[2] = (char) (crc >> 16) & 0xFF; - trailer[3] = (char) (crc >> 24) & 0xFF; - trailer[4] = (char) stream.total_in & 0xFF; - trailer[5] = (char) (stream.total_in >> 8) & 0xFF; - trailer[6] = (char) (stream.total_in >> 16) & 0xFF; - trailer[7] = (char) (stream.total_in >> 24) & 0xFF; - trailer[8] = '\0'; - } - RETURN_STRINGL(s2, stream.total_out+GZIP_HEADER_LENGTH+(coding==CODING_GZIP?GZIP_FOOTER_LENGTH:0), 0); - } else { - efree(s2); - php_error(E_WARNING,"gzencode: %s",zError(status)); - RETURN_FALSE; - } -} -/* }}} */ - -/* {{{ proto string ob_gzhandler(string str, int mode) - Encode str based on accept-encoding setting - designed to be called from ob_start() */ -PHP_FUNCTION(ob_gzhandler) -{ - int coding; - zval **zv_string, **zv_mode; - zval **data, **a_encoding; - zend_bool return_original=0; - zend_bool do_start, do_end; - - if (ZEND_NUM_ARGS()!=2 || zend_get_parameters_ex(2, &zv_string, &zv_mode)==FAILURE) { - ZEND_WRONG_PARAM_COUNT(); - } - - if (ZLIBG(ob_gzhandler_status)==-1 - || zend_hash_find(&EG(symbol_table), "HTTP_SERVER_VARS", sizeof("HTTP_SERVER_VARS"), (void **) &data)==FAILURE - || Z_TYPE_PP(data)!=IS_ARRAY - || zend_hash_find(Z_ARRVAL_PP(data), "HTTP_ACCEPT_ENCODING", sizeof("HTTP_ACCEPT_ENCODING"), (void **) &a_encoding)==FAILURE) { - /* return the original string */ - *return_value = **zv_string; - zval_copy_ctor(return_value); - ZLIBG(ob_gzhandler_status)=-1; - return; - } - convert_to_string_ex(a_encoding); - if (php_memnstr(Z_STRVAL_PP(a_encoding), "gzip", 4, Z_STRVAL_PP(a_encoding) + Z_STRLEN_PP(a_encoding))) { - coding = CODING_GZIP; - } else if(php_memnstr(Z_STRVAL_PP(a_encoding), "deflate", 7, Z_STRVAL_PP(a_encoding) + Z_STRLEN_PP(a_encoding))) { - coding = CODING_DEFLATE; - } else { - RETURN_FALSE; - } - - convert_to_long_ex(zv_mode); - do_start = ((Z_LVAL_PP(zv_mode) & PHP_OUTPUT_HANDLER_START) ? 1 : 0); - do_end = ((Z_LVAL_PP(zv_mode) & PHP_OUTPUT_HANDLER_END) ? 1 : 0); - Z_STRVAL_P(return_value) = NULL; - Z_STRLEN_P(return_value) = 0; - if (php_deflate_string(Z_STRVAL_PP(zv_string), Z_STRLEN_PP(zv_string), &Z_STRVAL_P(return_value), &Z_STRLEN_P(return_value), coding, do_start, do_end, ZLIBG(output_compression_level) TSRMLS_CC)==SUCCESS) { - Z_TYPE_P(return_value) = IS_STRING; - if (do_start) { - switch (coding) { - case CODING_GZIP: - if (sapi_add_header("Content-Encoding: gzip", sizeof("Content-Encoding: gzip") - 1, 1)==FAILURE) { - return_original = 1; - } - if (sapi_add_header("Vary: Accept-Encoding", sizeof("Vary: Accept-Encoding") - 1, 1)==FAILURE) { - return_original = 1; - } - break; - case CODING_DEFLATE: - if (sapi_add_header("Content-Encoding: deflate", sizeof("Content-Encoding: deflate") - 1, 1)==FAILURE) { - return_original = 1; - } - if (sapi_add_header("Vary: Accept-Encoding", sizeof("Vary: Accept-Encoding") - 1, 1)==FAILURE) { - return_original = 1; - } - break; - default: - return_original = 1; - break; - } - } - - if (return_original) { - zval_dtor(return_value); - } - - } else { - return_original = 1; - } - - if (return_original) { - /* return the original string */ - *return_value = **zv_string; - zval_copy_ctor(return_value); - } -} -/* }}} */ - -/* {{{ php_gzip_output_handler - */ -static void php_gzip_output_handler(char *output, uint output_len, char **handled_output, uint *handled_output_len, int mode TSRMLS_DC) -{ - zend_bool do_start, do_end; - - do_start = (mode & PHP_OUTPUT_HANDLER_START ? 1 : 0); - do_end = (mode & PHP_OUTPUT_HANDLER_END ? 1 : 0); - if (php_deflate_string(output, output_len, handled_output, handled_output_len, ZLIBG(ob_gzip_coding), do_start, do_end, ZLIBG(output_compression_level) TSRMLS_CC)!=SUCCESS) { - zend_error(E_ERROR, "Compression failed"); - } -} -/* }}} */ - -/* {{{ php_enable_output_compression - */ -int php_enable_output_compression(int buffer_size TSRMLS_DC) -{ - zval **a_encoding, **data; - - if (zend_hash_find(&EG(symbol_table), "HTTP_SERVER_VARS", sizeof("HTTP_SERVER_VARS"), (void **) &data)==FAILURE - || Z_TYPE_PP(data)!=IS_ARRAY - || zend_hash_find(Z_ARRVAL_PP(data), "HTTP_ACCEPT_ENCODING", sizeof("HTTP_ACCEPT_ENCODING"), (void **) &a_encoding)==FAILURE) { - return FAILURE; - } - convert_to_string_ex(a_encoding); - if (php_memnstr(Z_STRVAL_PP(a_encoding), "gzip", 4, Z_STRVAL_PP(a_encoding) + Z_STRLEN_PP(a_encoding))) { - if (sapi_add_header("Content-Encoding: gzip", sizeof("Content-Encoding: gzip") - 1, 1)==FAILURE) { - return FAILURE; - } - if (sapi_add_header("Vary: Accept-Encoding", sizeof("Vary: Accept-Encoding") - 1, 1)==FAILURE) { - return FAILURE; - } - ZLIBG(ob_gzip_coding) = CODING_GZIP; - } else if(php_memnstr(Z_STRVAL_PP(a_encoding), "deflate", 7, Z_STRVAL_PP(a_encoding) + Z_STRLEN_PP(a_encoding))) { - if (sapi_add_header("Content-Encoding: deflate", sizeof("Content-Encoding: deflate") - 1, 1)==FAILURE) { - return FAILURE; - } - if (sapi_add_header("Vary: Accept-Encoding", sizeof("Vary: Accept-Encoding") - 1, 1)==FAILURE) { - return FAILURE; - } - ZLIBG(ob_gzip_coding) = CODING_DEFLATE; - } else { - return FAILURE; - } - - php_start_ob_buffer(NULL, buffer_size, 0 TSRMLS_CC); - php_ob_set_internal_handler(php_gzip_output_handler, buffer_size*1.5, "zlib output compression", 0 TSRMLS_CC); - return SUCCESS; -} -/* }}} */ - -/* - * Local variables: - * tab-width: 4 - * c-basic-offset: 4 - * End: - * vim600: sw=4 ts=4 fdm=marker - * vim<600: sw=4 ts=4 - */ |