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b7ecaacd07
- Avoid displaying errors during startup, unless display_startup_errors is enabled. - Implemented post_size_max limit. Defaults to 8MB. - Implemented file_uploads on/off directive (defaults to on).
604 lines
17 KiB
C
604 lines
17 KiB
C
/*
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+----------------------------------------------------------------------+
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| PHP version 4.0 |
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+----------------------------------------------------------------------+
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| Copyright (c) 1997, 1998, 1999, 2000 The PHP Group |
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+----------------------------------------------------------------------+
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| This source file is subject to version 2.02 of the PHP license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available at through the world-wide-web at |
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| http://www.php.net/license/2_02.txt. |
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| If you did not receive a copy of the PHP license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@php.net so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Original design: Shane Caraveo <shane@caraveo.com> |
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| Authors: Andi Gutmans <andi@zend.com> |
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| Zeev Suraski <zeev@zend.com> |
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+----------------------------------------------------------------------+
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*/
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#include <ctype.h>
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#include <sys/stat.h>
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#include "php.h"
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#include "SAPI.h"
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#ifdef ZTS
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#include "TSRM.h"
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#endif
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#include "rfc1867.h"
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#if HAVE_FDFLIB
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#include "fdfdata.h"
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#endif
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#ifdef PHP_WIN32
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#define STRCASECMP stricmp
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#else
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#define STRCASECMP strcasecmp
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#endif
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#include "php_content_types.h"
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SAPI_POST_READER_FUNC(sapi_read_standard_form_data);
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SAPI_POST_READER_FUNC(php_default_post_reader);
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static sapi_post_entry supported_post_entries[] = {
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#if HAVE_FDFLIB
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{ "application/vnd.fdf", sizeof("application/vnd.fdf")-1, php_default_post_reader, fdf_post_handler},
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#endif
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{ NULL, 0, NULL }
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};
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static HashTable known_post_content_types;
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SAPI_API void (*sapi_error)(int error_type, const char *message, ...);
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#ifdef ZTS
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SAPI_API int sapi_globals_id;
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#else
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sapi_globals_struct sapi_globals;
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#endif
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static void sapi_globals_ctor(sapi_globals_struct *sapi_globals)
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{
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memset(sapi_globals,0,sizeof(*sapi_globals));
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}
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/* True globals (no need for thread safety) */
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sapi_module_struct sapi_module;
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SAPI_API void (*sapi_error)(int error_type, const char *message, ...);
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SAPI_API void sapi_startup(sapi_module_struct *sf)
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{
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sapi_module = *sf;
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zend_hash_init_ex(&known_post_content_types, 5, NULL, NULL, 1, 0);
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sapi_register_post_entries(supported_post_entries);
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#ifdef ZTS
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sapi_globals_id = ts_allocate_id(sizeof(sapi_globals_struct), (ts_allocate_ctor) sapi_globals_ctor, NULL);
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#else
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sapi_globals_ctor(&sapi_globals);
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#endif
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#ifdef VIRTUAL_DIR
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virtual_cwd_startup(); /* Could use shutdown to free the main cwd but it would just slow it down for CGI */
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#endif
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reentrancy_startup();
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php_global_startup_internal_extensions();
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}
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SAPI_API void sapi_shutdown(void)
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{
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reentrancy_shutdown();
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#ifdef VIRTUAL_DIR
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virtual_cwd_shutdown();
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#endif
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php_global_shutdown_internal_extensions();
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zend_hash_destroy(&known_post_content_types);
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}
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SAPI_API void sapi_free_header(sapi_header_struct *sapi_header)
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{
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efree(sapi_header->header);
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}
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SAPI_API void sapi_handle_post(void *arg SLS_DC)
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{
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if (SG(request_info).post_entry) {
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SG(request_info).post_entry->post_handler(SG(request_info).content_type_dup, arg SLS_CC);
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if (SG(request_info).post_data) {
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efree(SG(request_info).post_data);
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SG(request_info).post_data = NULL;
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}
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efree(SG(request_info).content_type_dup);
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SG(request_info).content_type_dup = NULL;
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}
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}
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static void sapi_read_post_data(SLS_D)
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{
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sapi_post_entry *post_entry;
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uint content_type_length = strlen(SG(request_info).content_type);
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char *content_type = estrndup(SG(request_info).content_type, content_type_length);
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char *p;
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char oldchar=0;
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void (*post_reader_func)(SLS_D);
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/* dedicated implementation for increased performance:
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* - Make the content type lowercase
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* - Trim descriptive data, stay with the content-type only
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*/
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for (p=content_type; p<content_type+content_type_length; p++) {
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switch (*p) {
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case ';':
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case ',':
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case ' ':
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content_type_length = p-content_type;
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oldchar = *p;
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*p = 0;
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break;
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default:
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*p = tolower(*p);
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break;
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}
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}
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if (zend_hash_find(&known_post_content_types, content_type, content_type_length+1, (void **) &post_entry)==SUCCESS) {
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SG(request_info).post_entry = post_entry;
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post_reader_func = post_entry->post_reader;
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} else {
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if (!sapi_module.default_post_reader) {
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sapi_module.sapi_error(E_WARNING, "Unsupported content type: '%s'", content_type);
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return;
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}
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SG(request_info).post_entry = NULL;
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post_reader_func = sapi_module.default_post_reader;
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}
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if (oldchar) {
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*(p-1) = oldchar;
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}
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post_reader_func(SLS_C);
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SG(request_info).content_type_dup = content_type;
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}
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SAPI_POST_READER_FUNC(sapi_read_standard_form_data)
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{
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int read_bytes;
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int allocated_bytes=SAPI_POST_BLOCK_SIZE+1;
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if (SG(request_info).content_length > SG(post_max_size)) {
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php_error(E_WARNING, "POST Content-Length of %d bytes exceeds the limit of %d bytes",
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SG(request_info).content_length, SG(post_max_size));
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return;
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}
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SG(request_info).post_data = emalloc(allocated_bytes);
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for (;;) {
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read_bytes = sapi_module.read_post(SG(request_info).post_data+SG(read_post_bytes), SAPI_POST_BLOCK_SIZE SLS_CC);
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if (read_bytes<=0) {
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break;
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}
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SG(read_post_bytes) += read_bytes;
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if (SG(read_post_bytes) > SG(post_max_size)) {
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php_error(E_WARNING, "Actual POST length does not match Content-Length, and exceeds %d bytes", SG(post_max_size));
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return;
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}
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if (read_bytes < SAPI_POST_BLOCK_SIZE) {
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break;
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}
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if (SG(read_post_bytes)+SAPI_POST_BLOCK_SIZE >= allocated_bytes) {
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allocated_bytes = SG(read_post_bytes)+SAPI_POST_BLOCK_SIZE+1;
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SG(request_info).post_data = erealloc(SG(request_info).post_data, allocated_bytes);
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}
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}
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SG(request_info).post_data[SG(read_post_bytes)] = 0; /* terminating NULL */
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SG(request_info).post_data_length = SG(read_post_bytes);
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}
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SAPI_API char *sapi_get_default_content_type(SLS_D)
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{
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char *mimetype, *charset, *content_type;
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mimetype = SG(default_mimetype) ? SG(default_mimetype) : SAPI_DEFAULT_MIMETYPE;
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charset = SG(default_charset) ? SG(default_charset) : SAPI_DEFAULT_CHARSET;
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if (strncasecmp(mimetype, "text/", 5) == 0 && *charset) {
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int len = strlen(mimetype) + sizeof("; charset=") + strlen(charset);
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content_type = emalloc(len);
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snprintf(content_type, len, "%s; charset=%s", mimetype, charset);
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} else {
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content_type = estrdup(mimetype);
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}
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return content_type;
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}
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SAPI_API void sapi_get_default_content_type_header(sapi_header_struct *default_header SLS_DC)
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{
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char *default_content_type = sapi_get_default_content_type(SLS_C);
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int default_content_type_len = strlen(default_content_type);
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default_header->header_len = (sizeof("Content-type: ")-1) + default_content_type_len;
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default_header->header = emalloc(default_header->header_len+1);
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memcpy(default_header->header, "Content-type: ", sizeof("Content-type: "));
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memcpy(default_header->header+sizeof("Content-type: ")-1, default_content_type, default_content_type_len);
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default_header->header[default_header->header_len] = 0;
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efree(default_content_type);
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}
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/*
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* Add charset on content-type header if the MIME type starts with
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* "text/", the default_charset directive is not empty and
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* there is not already a charset option in there.
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*
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* If "mimetype" is non-NULL, it should point to a pointer allocated
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* with emalloc(). If a charset is added, the string will be
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* re-allocated and the new length is returned. If mimetype is
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* unchanged, 0 is returned.
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*
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*/
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SAPI_API size_t sapi_apply_default_charset(char **mimetype, size_t len SLS_DC)
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{
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char *charset, *newtype;
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int newlen;
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charset = SG(default_charset) ? SG(default_charset) : SAPI_DEFAULT_CHARSET;
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if (*charset && strncmp(*mimetype, "text/", 5) == 0 && strstr(*mimetype, "charset=") == NULL) {
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newlen = len + (sizeof(";charset=")-1) + strlen(charset);
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newtype = emalloc(newlen + 1);
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PHP_STRLCPY(newtype, *mimetype, newlen + 1, len);
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strlcat(newtype, ";charset=", newlen + 1);
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if (*mimetype != NULL) {
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efree(*mimetype);
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}
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*mimetype = newtype;
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return newlen;
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}
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return 0;
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}
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/*
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* Called from php_request_startup() for every request.
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*/
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SAPI_API void sapi_activate(SLS_D)
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{
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zend_llist_init(&SG(sapi_headers).headers, sizeof(sapi_header_struct), (void (*)(void *)) sapi_free_header, 0);
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SG(sapi_headers).send_default_content_type = 1;
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/*
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SG(sapi_headers).http_response_code = 200;
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*/
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SG(sapi_headers).http_status_line = NULL;
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SG(headers_sent) = 0;
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SG(read_post_bytes) = 0;
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SG(request_info).post_data = NULL;
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SG(request_info).current_user = NULL;
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SG(request_info).current_user_length = 0;
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/* It's possible to override this general case in the activate() callback, if
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* necessary.
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*/
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if (SG(request_info).request_method && !strcmp(SG(request_info).request_method, "HEAD")) {
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SG(request_info).headers_only = 1;
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} else {
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SG(request_info).headers_only = 0;
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}
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SG(rfc1867_uploaded_files) = NULL;
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if (SG(server_context)) {
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if (SG(request_info).request_method
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&& !strcmp(SG(request_info).request_method, "POST")) {
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if (!SG(request_info).content_type) {
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sapi_module.sapi_error(E_WARNING, "No content-type in POST request");
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SG(request_info).content_type_dup = NULL;
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} else {
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sapi_read_post_data(SLS_C);
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}
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} else {
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SG(request_info).content_type_dup = NULL;
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}
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SG(request_info).cookie_data = sapi_module.read_cookies(SLS_C);
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if (sapi_module.activate) {
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sapi_module.activate(SLS_C);
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}
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}
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}
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SAPI_API void sapi_deactivate(SLS_D)
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{
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zend_llist_destroy(&SG(sapi_headers).headers);
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if (SG(request_info).post_data) {
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efree(SG(request_info).post_data);
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}
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if (SG(request_info).auth_user) {
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efree(SG(request_info).auth_user);
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}
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if (SG(request_info).auth_password) {
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efree(SG(request_info).auth_password);
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}
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if (SG(request_info).content_type_dup) {
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efree(SG(request_info).content_type_dup);
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}
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if (SG(request_info).current_user) {
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efree(SG(request_info).current_user);
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}
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if (sapi_module.deactivate) {
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sapi_module.deactivate(SLS_C);
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}
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if (SG(rfc1867_uploaded_files)) {
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destroy_uploaded_files_hash(SLS_C);
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}
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}
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SAPI_API void sapi_initialize_empty_request(SLS_D)
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{
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SG(server_context) = NULL;
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SG(request_info).request_method = NULL;
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SG(request_info).auth_user = SG(request_info).auth_password = NULL;
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SG(request_info).content_type_dup = NULL;
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}
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static int sapi_extract_response_code(const char *header_line)
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{
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int code = 200;
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const char *ptr;
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for (ptr = header_line; *ptr; ptr++) {
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if (*ptr == ' ' && *(ptr + 1) != ' ') {
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code = atoi(ptr + 1);
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break;
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}
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}
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return code;
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}
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/* This function expects a *duplicated* string, that was previously emalloc()'d.
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* Pointers sent to this functions will be automatically freed by the framework.
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*/
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SAPI_API int sapi_add_header(char *header_line, uint header_line_len, zend_bool duplicate)
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{
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int retval, free_header = 0;
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sapi_header_struct sapi_header;
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char *colon_offset;
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SLS_FETCH();
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if (SG(headers_sent)) {
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char *output_start_filename = php_get_output_start_filename();
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int output_start_lineno = php_get_output_start_lineno();
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if (output_start_filename) {
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sapi_module.sapi_error(E_WARNING, "Cannot add header information - headers already sent by (output started at %s:%d)",
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output_start_filename, output_start_lineno);
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} else {
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sapi_module.sapi_error(E_WARNING, "Cannot add header information - headers already sent");
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}
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if (!duplicate) {
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efree(header_line);
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}
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return FAILURE;
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}
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if (duplicate) {
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header_line = estrndup(header_line, header_line_len);
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}
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/* cut of trailing spaces, linefeeds and carriage-returns */
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while(isspace(header_line[header_line_len-1]))
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header_line[--header_line_len]='\0';
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sapi_header.header = header_line;
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sapi_header.header_len = header_line_len;
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/* Check the header for a few cases that we have special support for in SAPI */
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if (header_line_len>=5
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&& !strncasecmp(header_line, "HTTP/", 5)) {
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/* filter out the response code */
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SG(sapi_headers).http_response_code = sapi_extract_response_code(header_line);
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SG(sapi_headers).http_status_line = header_line;
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return SUCCESS;
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} else {
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colon_offset = strchr(header_line, ':');
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if (colon_offset) {
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*colon_offset = 0;
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if (!STRCASECMP(header_line, "Content-Type")) {
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char *ptr = colon_offset, *mimetype = NULL, *newheader;
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size_t len = header_line_len - (ptr - header_line), newlen;
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while (*ptr == ' ' && *ptr != '\0') {
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ptr++;
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}
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mimetype = estrdup(ptr);
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newlen = sapi_apply_default_charset(&mimetype, len SLS_CC);
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if (newlen != 0) {
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newlen += sizeof("Content-type: ");
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newheader = emalloc(newlen);
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PHP_STRLCPY(newheader, "Content-type: ", newlen, sizeof("Content-type: ")-1);
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strlcat(newheader, mimetype, newlen);
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sapi_header.header = newheader;
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sapi_header.header_len = newlen - 1;
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colon_offset = strchr(newheader, ':');
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*colon_offset = '\0';
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free_header = 1;
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}
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efree(mimetype);
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SG(sapi_headers).send_default_content_type = 0;
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} else if (!STRCASECMP(header_line, "Location")) {
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SG(sapi_headers).http_response_code = 302; /* redirect */
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} else if (!STRCASECMP(header_line, "WWW-Authenticate")) { /* HTTP Authentication */
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SG(sapi_headers).http_response_code = 401; /* authentication-required */
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}
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*colon_offset = ':';
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}
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}
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if (sapi_module.header_handler) {
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retval = sapi_module.header_handler(&sapi_header, &SG(sapi_headers) SLS_CC);
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} else {
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retval = SAPI_HEADER_ADD;
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}
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if (retval & SAPI_HEADER_DELETE_ALL) {
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zend_llist_clean(&SG(sapi_headers).headers);
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}
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if (retval & SAPI_HEADER_ADD) {
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zend_llist_add_element(&SG(sapi_headers).headers, (void *) &sapi_header);
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}
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if (free_header) {
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efree(sapi_header.header);
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}
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return SUCCESS;
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}
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SAPI_API int sapi_send_headers()
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{
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int retval;
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int ret = FAILURE;
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SLS_FETCH();
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if (SG(headers_sent)) {
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return SUCCESS;
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}
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/* Success-oriented. We set headers_sent to 1 here to avoid an infinite loop
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* in case of an error situation.
|
|
*/
|
|
SG(headers_sent) = 1;
|
|
|
|
if (sapi_module.send_headers) {
|
|
retval = sapi_module.send_headers(&SG(sapi_headers) SLS_CC);
|
|
} else {
|
|
retval = SAPI_HEADER_DO_SEND;
|
|
}
|
|
|
|
switch (retval) {
|
|
case SAPI_HEADER_SENT_SUCCESSFULLY:
|
|
ret = SUCCESS;
|
|
break;
|
|
case SAPI_HEADER_DO_SEND:
|
|
if (SG(sapi_headers).http_status_line) {
|
|
sapi_header_struct http_status_line;
|
|
|
|
http_status_line.header = SG(sapi_headers).http_status_line;
|
|
http_status_line.header_len = strlen(SG(sapi_headers).http_status_line);
|
|
sapi_module.send_header(&http_status_line, SG(server_context));
|
|
}
|
|
zend_llist_apply_with_argument(&SG(sapi_headers).headers, (void (*)(void *, void *)) sapi_module.send_header, SG(server_context));
|
|
if(SG(sapi_headers).send_default_content_type) {
|
|
sapi_header_struct default_header;
|
|
|
|
sapi_get_default_content_type_header(&default_header SLS_CC);
|
|
sapi_module.send_header(&default_header, SG(server_context));
|
|
sapi_free_header(&default_header);
|
|
}
|
|
sapi_module.send_header(NULL, SG(server_context));
|
|
ret = SUCCESS;
|
|
break;
|
|
case SAPI_HEADER_SEND_FAILED:
|
|
SG(headers_sent) = 0;
|
|
ret = FAILURE;
|
|
break;
|
|
}
|
|
|
|
if (SG(sapi_headers).http_status_line) {
|
|
efree(SG(sapi_headers).http_status_line);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
SAPI_API int sapi_register_post_entries(sapi_post_entry *post_entries)
|
|
{
|
|
sapi_post_entry *p=post_entries;
|
|
|
|
while (p->content_type) {
|
|
if (sapi_register_post_entry(p)==FAILURE) {
|
|
return FAILURE;
|
|
}
|
|
p++;
|
|
}
|
|
return SUCCESS;
|
|
}
|
|
|
|
|
|
SAPI_API int sapi_register_post_entry(sapi_post_entry *post_entry)
|
|
{
|
|
return zend_hash_add(&known_post_content_types, post_entry->content_type, post_entry->content_type_len+1, (void *) post_entry, sizeof(sapi_post_entry), NULL);
|
|
}
|
|
|
|
|
|
SAPI_API void sapi_unregister_post_entry(sapi_post_entry *post_entry)
|
|
{
|
|
zend_hash_del(&known_post_content_types, post_entry->content_type, post_entry->content_type_len+1);
|
|
}
|
|
|
|
|
|
SAPI_API int sapi_register_default_post_reader(void (*default_post_reader)(SLS_D))
|
|
{
|
|
sapi_module.default_post_reader = default_post_reader;
|
|
return SUCCESS;
|
|
}
|
|
|
|
|
|
SAPI_API int sapi_flush()
|
|
{
|
|
if (sapi_module.flush) {
|
|
SLS_FETCH();
|
|
|
|
sapi_module.flush(SG(server_context));
|
|
return SUCCESS;
|
|
} else {
|
|
return FAILURE;
|
|
}
|
|
}
|
|
|
|
SAPI_API struct stat *sapi_get_stat()
|
|
{
|
|
SLS_FETCH();
|
|
|
|
if (sapi_module.get_stat) {
|
|
return sapi_module.get_stat(SLS_C);
|
|
} else {
|
|
if (!SG(request_info).path_translated || (V_STAT(SG(request_info).path_translated, &SG(global_stat))==-1)) {
|
|
return NULL;
|
|
}
|
|
return &SG(global_stat);
|
|
}
|
|
}
|
|
|
|
|
|
SAPI_API char *sapi_getenv(char *name, size_t name_len)
|
|
{
|
|
if (sapi_module.getenv) {
|
|
SLS_FETCH();
|
|
|
|
return sapi_module.getenv(name, name_len SLS_CC);
|
|
} else {
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Local variables:
|
|
* tab-width: 4
|
|
* c-basic-offset: 4
|
|
* End:
|
|
*/
|