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SAPI.c
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SAPI.c
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/*
+----------------------------------------------------------------------+
| Server API Abstraction Layer |
+----------------------------------------------------------------------+
| Copyright (c) 1998, 1999 SAPI Development Team |
+----------------------------------------------------------------------+
| This source file is subject to the Zend license, that is bundled |
| with this package in the file LICENSE. If you did not receive a |
| copy of the Zend license, please mail us at zend@zend.com so we can |
| send you a copy immediately. |
+----------------------------------------------------------------------+
| Design: Shane Caraveo <shane@caraveo.com> |
| Authors: Andi Gutmans <andi@zend.com> |
| Zeev Suraski <zeev@zend.com> |
+----------------------------------------------------------------------+
*/
#include "SAPI.h"
#ifdef ZTS
#include "TSRM.h"
#endif
#if WIN32||WINNT
#define STRCASECMP stricmp
#else
#define STRCASECMP strcasecmp
#endif
SAPI_API void (*sapi_error)(int error_type, const char *message, ...);
#ifdef ZTS
SAPI_API int sapi_globals_id;
#else
sapi_globals_struct sapi_globals;
#endif
/* True globals (no need for thread safety) */
sapi_module_struct sapi_module;
SAPI_API void (*sapi_error)(int error_type, const char *message, ...);
SAPI_API void sapi_startup(sapi_module_struct *sf)
{
sapi_module = *sf;
#ifdef ZTS
sapi_globals_id = ts_allocate_id(sizeof(sapi_globals_struct), NULL, NULL);
#endif
}
static void sapi_free_header(sapi_header_struct *sapi_header)
{
efree(sapi_header->header);
}
#undef SAPI_POST_BLOCK_SIZE
#define SAPI_POST_BLOCK_SIZE 2
static void sapi_read_post_data(SLS_D)
{
int read_bytes, total_read_bytes=0;
int allocated_bytes=SAPI_POST_BLOCK_SIZE+1;
SG(request_info).post_data = emalloc(allocated_bytes);
for (;;) {
read_bytes = sapi_module.read_post(SG(request_info).post_data+total_read_bytes, SAPI_POST_BLOCK_SIZE SLS_CC);
if (read_bytes<=0) {
break;
}
total_read_bytes += read_bytes;
if (read_bytes < SAPI_POST_BLOCK_SIZE) {
break;
}
if (total_read_bytes+SAPI_POST_BLOCK_SIZE >= allocated_bytes) {
allocated_bytes = total_read_bytes+SAPI_POST_BLOCK_SIZE+1;
SG(request_info).post_data = erealloc(SG(request_info).post_data, allocated_bytes);
}
}
SG(request_info).post_data[total_read_bytes] = 0; /* terminating NULL */
}
SAPI_API void sapi_activate(SLS_D)
{
zend_llist_init(&SG(sapi_headers).headers, sizeof(sapi_header_struct), (void (*)(void *)) sapi_free_header, 0);
SG(sapi_headers).send_default_content_type = 1;
SG(sapi_headers).http_response_code = 200;
SG(sapi_headers).http_status_line = NULL;
SG(headers_sent) = 0;
SG(read_post_bytes) = 0;
SG(request_info).post_data = NULL;
if (SG(server_context)) {
if (SG(request_info).request_method
&& !strcmp(SG(request_info).request_method, "POST")) {
sapi_read_post_data(SLS_C);
}
SG(request_info).cookie_data = sapi_module.read_cookies(SLS_C);
}
if (SG(request_info).request_method && !strcmp(SG(request_info).request_method, "HEAD")) {
SG(request_info).headers_only = 1;
} else {
SG(request_info).headers_only = 0;
}
}
SAPI_API void sapi_deactivate(SLS_D)
{
zend_llist_destroy(&SG(sapi_headers).headers);
if (SG(request_info).post_data) {
efree(SG(request_info).post_data);
}
}
/* This function expects a *duplicated* string, that was previously emalloc()'d.
* Pointers sent to this functions will be automatically freed by the framework.
*/
SAPI_API int sapi_add_header(char *header_line, uint header_line_len)
{
int retval;
sapi_header_struct sapi_header;
char *colon_offset;
SLS_FETCH();
if (SG(headers_sent)) {
sapi_module.sapi_error(E_WARNING, "Cannot add header information - headers already sent");
efree(header_line);
return FAILURE;
}
sapi_header.header = header_line;
sapi_header.header_len = header_line_len;
/* Check the header for a few cases that we have special support for in SAPI */
if (!memcmp(header_line, "HTTP/", 5)) {
SG(sapi_headers).http_status_line = header_line;
} else {
colon_offset = strchr(header_line, ':');
if (colon_offset) {
*colon_offset = 0;
if (!STRCASECMP(header_line, "Content-Type")) {
SG(sapi_headers).send_default_content_type = 0;
} else if (!STRCASECMP(header_line, "Location")) {
SG(sapi_headers).http_response_code = 302; /* redirect */
} else if (!STRCASECMP(header_line, "WWW-Authenticate")) { /* HTTP Authentication */
SG(sapi_headers).http_response_code = 401; /* authentication-required */
}
*colon_offset = ':';
}
}
if (sapi_module.header_handler) {
retval = sapi_module.header_handler(&sapi_header, &SG(sapi_headers) SLS_CC);
} else {
retval = SAPI_HEADER_ADD;
}
if (retval & SAPI_HEADER_DELETE_ALL) {
zend_llist_clean(&SG(sapi_headers).headers);
}
if (retval & SAPI_HEADER_ADD) {
zend_llist_add_element(&SG(sapi_headers).headers, (void *) &sapi_header);
}
return SUCCESS;
}
SAPI_API int sapi_send_headers()
{
int retval;
sapi_header_struct default_header = { SAPI_DEFAULT_CONTENT_TYPE, sizeof(SAPI_DEFAULT_CONTENT_TYPE)-1 };
SLS_FETCH();
if (SG(headers_sent)) {
return SUCCESS;
}
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:
SG(headers_sent) = 1;
return 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));
efree(SG(sapi_headers).http_status_line);
}
if (SG(sapi_headers).send_default_content_type) {
sapi_module.send_header(&default_header, SG(server_context));
}
zend_llist_apply_with_argument(&SG(sapi_headers).headers, (void (*)(void *, void *)) sapi_module.send_header, SG(server_context));
sapi_module.send_header(NULL, SG(server_context));
SG(headers_sent) = 1;
return SUCCESS;
break;
case SAPI_HEADER_SEND_FAILED:
return FAILURE;
break;
}
return FAILURE;
}