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php-src/main/SAPI.c
Nikita Popov 9bff96396d Don't leak header callback if headers already sent 
We need to avoid storing it in the first place, as we don't
really have a good place to release it later. If headers haven't
been sent yet, send_headers will do this. sapi_deactive happens
too late in the shutdown sequence and will result in leak reports.
2021-09-16 15:31:27 +02:00

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/*
+----------------------------------------------------------------------+
| Copyright (c) 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: |
| https://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. |
+----------------------------------------------------------------------+
| Original design: Shane Caraveo <shane@caraveo.com> |
| Authors: Andi Gutmans <andi@php.net> |
| Zeev Suraski <zeev@php.net> |
+----------------------------------------------------------------------+
*/
#include <ctype.h>
#include <sys/stat.h>
#include "php.h"
#include "SAPI.h"
#include "php_variables.h"
#include "php_ini.h"
#include "ext/standard/php_string.h"
#include "ext/standard/pageinfo.h"
#include "ext/pcre/php_pcre.h"
#ifdef ZTS
#include "TSRM.h"
#endif
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#elif defined(PHP_WIN32)
#include "win32/time.h"
#endif
#include "rfc1867.h"
#include "php_content_types.h"
#ifdef ZTS
SAPI_API int sapi_globals_id;
SAPI_API size_t sapi_globals_offset;
#else
sapi_globals_struct sapi_globals;
#endif
static void _type_dtor(zval *zv)
{
free(Z_PTR_P(zv));
}
static void sapi_globals_ctor(sapi_globals_struct *sapi_globals)
{
memset(sapi_globals, 0, sizeof(*sapi_globals));
zend_hash_init(&sapi_globals->known_post_content_types, 8, NULL, _type_dtor, 1);
php_setup_sapi_content_types();
}
static void sapi_globals_dtor(sapi_globals_struct *sapi_globals)
{
zend_hash_destroy(&sapi_globals->known_post_content_types);
}
/* True globals (no need for thread safety) */
SAPI_API sapi_module_struct sapi_module;
SAPI_API void sapi_startup(sapi_module_struct *sf)
{
sf->ini_entries = NULL;
sapi_module = *sf;
#ifdef ZTS
ts_allocate_fast_id(&sapi_globals_id, &sapi_globals_offset, sizeof(sapi_globals_struct), (ts_allocate_ctor) sapi_globals_ctor, (ts_allocate_dtor) sapi_globals_dtor);
# ifdef PHP_WIN32
_configthreadlocale(_ENABLE_PER_THREAD_LOCALE);
# endif
#else
sapi_globals_ctor(&sapi_globals);
#endif
#ifdef PHP_WIN32
tsrm_win32_startup();
#endif
reentrancy_startup();
}
SAPI_API void sapi_shutdown(void)
{
#ifdef ZTS
ts_free_id(sapi_globals_id);
#else
sapi_globals_dtor(&sapi_globals);
#endif
reentrancy_shutdown();
#ifdef PHP_WIN32
tsrm_win32_shutdown();
#endif
}
SAPI_API void sapi_free_header(sapi_header_struct *sapi_header)
{
efree(sapi_header->header);
}
/* {{{ call a header function */
PHP_FUNCTION(header_register_callback)
{
zend_fcall_info fci;
zend_fcall_info_cache fcc;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "f", &fci, &fcc) == FAILURE) {
RETURN_THROWS();
}
if (Z_TYPE(SG(callback_func)) != IS_UNDEF) {
zval_ptr_dtor(&SG(callback_func));
SG(fci_cache) = empty_fcall_info_cache;
}
/* Don't store callback if headers have already been sent:
* It won't get used and we won't have a chance to release it. */
if (!SG(headers_sent)) {
ZVAL_COPY(&SG(callback_func), &fci.function_name);
}
RETURN_TRUE;
}
/* }}} */
static void sapi_run_header_callback(zval *callback)
{
int error;
zend_fcall_info fci;
char *callback_error = NULL;
zval retval;
if (zend_fcall_info_init(callback, 0, &fci, &SG(fci_cache), NULL, &callback_error) == SUCCESS) {
fci.retval = &retval;
error = zend_call_function(&fci, &SG(fci_cache));
if (error == FAILURE) {
goto callback_failed;
} else {
zval_ptr_dtor(&retval);
}
} else {
callback_failed:
php_error_docref(NULL, E_WARNING, "Could not call the sapi_header_callback");
}
if (callback_error) {
efree(callback_error);
}
}
SAPI_API void sapi_handle_post(void *arg)
{
if (SG(request_info).post_entry && SG(request_info).content_type_dup) {
SG(request_info).post_entry->post_handler(SG(request_info).content_type_dup, arg);
efree(SG(request_info).content_type_dup);
SG(request_info).content_type_dup = NULL;
}
}
static void sapi_read_post_data(void)
{
sapi_post_entry *post_entry;
uint32_t content_type_length = (uint32_t)strlen(SG(request_info).content_type);
char *content_type = estrndup(SG(request_info).content_type, content_type_length);
char *p;
char oldchar=0;
void (*post_reader_func)(void) = NULL;
/* dedicated implementation for increased performance:
* - Make the content type lowercase
* - Trim descriptive data, stay with the content-type only
*/
for (p=content_type; p<content_type+content_type_length; p++) {
switch (*p) {
case ';':
case ',':
case ' ':
content_type_length = p-content_type;
oldchar = *p;
*p = 0;
break;
default:
*p = tolower(*p);
break;
}
}
/* now try to find an appropriate POST content handler */
if ((post_entry = zend_hash_str_find_ptr(&SG(known_post_content_types), content_type,
content_type_length)) != NULL) {
/* found one, register it for use */
SG(request_info).post_entry = post_entry;
post_reader_func = post_entry->post_reader;
} else {
/* fallback */
SG(request_info).post_entry = NULL;
if (!sapi_module.default_post_reader) {
/* no default reader ? */
SG(request_info).content_type_dup = NULL;
sapi_module.sapi_error(E_WARNING, "Unsupported content type: '%s'", content_type);
return;
}
}
if (oldchar) {
*(p-1) = oldchar;
}
SG(request_info).content_type_dup = content_type;
if(post_reader_func) {
post_reader_func();
}
if(sapi_module.default_post_reader) {
sapi_module.default_post_reader();
}
}
SAPI_API size_t sapi_read_post_block(char *buffer, size_t buflen)
{
size_t read_bytes;
if (!sapi_module.read_post) {
return 0;
}
read_bytes = sapi_module.read_post(buffer, buflen);
if (read_bytes > 0) {
/* gogo */
SG(read_post_bytes) += read_bytes;
}
if (read_bytes < buflen) {
/* done */
SG(post_read) = 1;
}
return read_bytes;
}
SAPI_API SAPI_POST_READER_FUNC(sapi_read_standard_form_data)
{
if ((SG(post_max_size) > 0) && (SG(request_info).content_length > SG(post_max_size))) {
php_error_docref(NULL, E_WARNING, "POST Content-Length of " ZEND_LONG_FMT " bytes exceeds the limit of " ZEND_LONG_FMT " bytes",
SG(request_info).content_length, SG(post_max_size));
return;
}
SG(request_info).request_body = php_stream_temp_create_ex(TEMP_STREAM_DEFAULT, SAPI_POST_BLOCK_SIZE, PG(upload_tmp_dir));
if (sapi_module.read_post) {
size_t read_bytes;
for (;;) {
char buffer[SAPI_POST_BLOCK_SIZE];
read_bytes = sapi_read_post_block(buffer, SAPI_POST_BLOCK_SIZE);
if (read_bytes > 0) {
if (php_stream_write(SG(request_info).request_body, buffer, read_bytes) != read_bytes) {
/* if parts of the stream can't be written, purge it completely */
php_stream_truncate_set_size(SG(request_info).request_body, 0);
php_error_docref(NULL, E_WARNING, "POST data can't be buffered; all data discarded");
break;
}
}
if ((SG(post_max_size) > 0) && (SG(read_post_bytes) > SG(post_max_size))) {
php_error_docref(NULL, E_WARNING, "Actual POST length does not match Content-Length, and exceeds " ZEND_LONG_FMT " bytes", SG(post_max_size));
break;
}
if (read_bytes < SAPI_POST_BLOCK_SIZE) {
/* done */
break;
}
}
php_stream_rewind(SG(request_info).request_body);
}
}
static inline char *get_default_content_type(uint32_t prefix_len, uint32_t *len)
{
char *mimetype, *charset, *content_type;
uint32_t mimetype_len, charset_len;
if (SG(default_mimetype)) {
mimetype = SG(default_mimetype);
mimetype_len = (uint32_t)strlen(SG(default_mimetype));
} else {
mimetype = SAPI_DEFAULT_MIMETYPE;
mimetype_len = sizeof(SAPI_DEFAULT_MIMETYPE) - 1;
}
if (SG(default_charset)) {
charset = SG(default_charset);
charset_len = (uint32_t)strlen(SG(default_charset));
} else {
charset = SAPI_DEFAULT_CHARSET;
charset_len = sizeof(SAPI_DEFAULT_CHARSET) - 1;
}
if (*charset && strncasecmp(mimetype, "text/", 5) == 0) {
char *p;
*len = prefix_len + mimetype_len + sizeof("; charset=") - 1 + charset_len;
content_type = (char*)emalloc(*len + 1);
p = content_type + prefix_len;
memcpy(p, mimetype, mimetype_len);
p += mimetype_len;
memcpy(p, "; charset=", sizeof("; charset=") - 1);
p += sizeof("; charset=") - 1;
memcpy(p, charset, charset_len + 1);
} else {
*len = prefix_len + mimetype_len;
content_type = (char*)emalloc(*len + 1);
memcpy(content_type + prefix_len, mimetype, mimetype_len + 1);
}
return content_type;
}
SAPI_API char *sapi_get_default_content_type(void)
{
uint32_t len;
return get_default_content_type(0, &len);
}
SAPI_API void sapi_get_default_content_type_header(sapi_header_struct *default_header)
{
uint32_t len;
default_header->header = get_default_content_type(sizeof("Content-type: ")-1, &len);
default_header->header_len = len;
memcpy(default_header->header, "Content-type: ", sizeof("Content-type: ") - 1);
}
/*
* Add charset on content-type header if the MIME type starts with
* "text/", the default_charset directive is not empty and
* there is not already a charset option in there.
*
* If "mimetype" is non-NULL, it should point to a pointer allocated
* with emalloc(). If a charset is added, the string will be
* re-allocated and the new length is returned. If mimetype is
* unchanged, 0 is returned.
*
*/
SAPI_API size_t sapi_apply_default_charset(char **mimetype, size_t len)
{
char *charset, *newtype;
size_t newlen;
charset = SG(default_charset) ? SG(default_charset) : SAPI_DEFAULT_CHARSET;
if (*mimetype != NULL) {
if (*charset && strncmp(*mimetype, "text/", 5) == 0 && strstr(*mimetype, "charset=") == NULL) {
newlen = len + (sizeof(";charset=")-1) + strlen(charset);
newtype = emalloc(newlen + 1);
PHP_STRLCPY(newtype, *mimetype, newlen + 1, len);
strlcat(newtype, ";charset=", newlen + 1);
strlcat(newtype, charset, newlen + 1);
efree(*mimetype);
*mimetype = newtype;
return newlen;
}
}
return 0;
}
SAPI_API void sapi_activate_headers_only(void)
{
if (SG(request_info).headers_read == 1)
return;
SG(request_info).headers_read = 1;
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(sapi_headers).mimetype = NULL;
SG(read_post_bytes) = 0;
SG(request_info).request_body = NULL;
SG(request_info).current_user = NULL;
SG(request_info).current_user_length = 0;
SG(request_info).no_headers = 0;
SG(request_info).post_entry = NULL;
SG(global_request_time) = 0;
/*
* It's possible to override this general case in the activate() callback,
* if necessary.
*/
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;
}
if (SG(server_context)) {
SG(request_info).cookie_data = sapi_module.read_cookies();
if (sapi_module.activate) {
sapi_module.activate();
}
}
if (sapi_module.input_filter_init ) {
sapi_module.input_filter_init();
}
}
/*
* Called from php_request_startup() for every request.
*/
SAPI_API void sapi_activate(void)
{
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(sapi_headers).mimetype = NULL;
SG(headers_sent) = 0;
ZVAL_UNDEF(&SG(callback_func));
SG(read_post_bytes) = 0;
SG(request_info).request_body = NULL;
SG(request_info).current_user = NULL;
SG(request_info).current_user_length = 0;
SG(request_info).no_headers = 0;
SG(request_info).post_entry = NULL;
SG(request_info).proto_num = 1000; /* Default to HTTP 1.0 */
SG(global_request_time) = 0;
SG(post_read) = 0;
/* It's possible to override this general case in the activate() callback, if necessary. */
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;
}
SG(rfc1867_uploaded_files) = NULL;
/* Handle request method */
if (SG(server_context)) {
if (PG(enable_post_data_reading)
&& SG(request_info).content_type
&& SG(request_info).request_method
&& !strcmp(SG(request_info).request_method, "POST")) {
/* HTTP POST may contain form data to be processed into variables
* depending on given content type */
sapi_read_post_data();
} else {
SG(request_info).content_type_dup = NULL;
}
/* Cookies */
SG(request_info).cookie_data = sapi_module.read_cookies();
}
if (sapi_module.activate) {
sapi_module.activate();
}
if (sapi_module.input_filter_init) {
sapi_module.input_filter_init();
}
}
static void sapi_send_headers_free(void)
{
if (SG(sapi_headers).http_status_line) {
efree(SG(sapi_headers).http_status_line);
SG(sapi_headers).http_status_line = NULL;
}
}
SAPI_API void sapi_deactivate(void)
{
zend_llist_destroy(&SG(sapi_headers).headers);
if (SG(request_info).request_body) {
SG(request_info).request_body = NULL;
} else if (SG(server_context)) {
if (!SG(post_read)) {
/* make sure we've consumed all request input data */
char dummy[SAPI_POST_BLOCK_SIZE];
size_t read_bytes;
do {
read_bytes = sapi_read_post_block(dummy, SAPI_POST_BLOCK_SIZE);
} while (SAPI_POST_BLOCK_SIZE == read_bytes);
}
}
if (SG(request_info).auth_user) {
efree(SG(request_info).auth_user);
}
if (SG(request_info).auth_password) {
efree(SG(request_info).auth_password);
}
if (SG(request_info).auth_digest) {
efree(SG(request_info).auth_digest);
}
if (SG(request_info).content_type_dup) {
efree(SG(request_info).content_type_dup);
}
if (SG(request_info).current_user) {
efree(SG(request_info).current_user);
}
if (sapi_module.deactivate) {
sapi_module.deactivate();
}
if (SG(rfc1867_uploaded_files)) {
destroy_uploaded_files_hash();
}
if (SG(sapi_headers).mimetype) {
efree(SG(sapi_headers).mimetype);
SG(sapi_headers).mimetype = NULL;
}
sapi_send_headers_free();
SG(sapi_started) = 0;
SG(headers_sent) = 0;
SG(request_info).headers_read = 0;
SG(global_request_time) = 0;
}
SAPI_API void sapi_initialize_empty_request(void)
{
SG(server_context) = NULL;
SG(request_info).request_method = NULL;
SG(request_info).auth_digest = SG(request_info).auth_user = SG(request_info).auth_password = NULL;
SG(request_info).content_type_dup = NULL;
}
static int sapi_extract_response_code(const char *header_line)
{
int code = 200;
const char *ptr;
for (ptr = header_line; *ptr; ptr++) {
if (*ptr == ' ' && *(ptr + 1) != ' ') {
code = atoi(ptr + 1);
break;
}
}
return code;
}
static void sapi_update_response_code(int ncode)
{
/* if the status code did not change, we do not want
to change the status line, and no need to change the code */
if (SG(sapi_headers).http_response_code == ncode) {
return;
}
if (SG(sapi_headers).http_status_line) {
efree(SG(sapi_headers).http_status_line);
SG(sapi_headers).http_status_line = NULL;
}
SG(sapi_headers).http_response_code = ncode;
}
/*
* since zend_llist_del_element only removes one matched item once,
* we should remove them manually
*/
static void sapi_remove_header(zend_llist *l, char *name, size_t len) {
sapi_header_struct *header;
zend_llist_element *next;
zend_llist_element *current=l->head;
while (current) {
header = (sapi_header_struct *)(current->data);
next = current->next;
if (header->header_len > len && header->header[len] == ':'
&& !strncasecmp(header->header, name, len)) {
if (current->prev) {
current->prev->next = next;
} else {
l->head = next;
}
if (next) {
next->prev = current->prev;
} else {
l->tail = current->prev;
}
sapi_free_header(header);
efree(current);
--l->count;
}
current = next;
}
}
SAPI_API int sapi_add_header_ex(const char *header_line, size_t header_line_len, bool duplicate, bool replace)
{
sapi_header_line ctr = {0};
int r;
ctr.line = header_line;
ctr.line_len = header_line_len;
r = sapi_header_op(replace ? SAPI_HEADER_REPLACE : SAPI_HEADER_ADD,
&ctr);
if (!duplicate)
efree((void *) header_line);
return r;
}
static void sapi_header_add_op(sapi_header_op_enum op, sapi_header_struct *sapi_header)
{
if (!sapi_module.header_handler ||
(SAPI_HEADER_ADD & sapi_module.header_handler(sapi_header, op, &SG(sapi_headers)))) {
if (op == SAPI_HEADER_REPLACE) {
char *colon_offset = strchr(sapi_header->header, ':');
if (colon_offset) {
char sav = *colon_offset;
*colon_offset = 0;
sapi_remove_header(&SG(sapi_headers).headers, sapi_header->header, strlen(sapi_header->header));
*colon_offset = sav;
}
}
zend_llist_add_element(&SG(sapi_headers).headers, (void *) sapi_header);
} else {
sapi_free_header(sapi_header);
}
}
SAPI_API int sapi_header_op(sapi_header_op_enum op, void *arg)
{
sapi_header_struct sapi_header;
char *colon_offset;
char *header_line;
size_t header_line_len;
int http_response_code;
if (SG(headers_sent) && !SG(request_info).no_headers) {
const char *output_start_filename = php_output_get_start_filename();
int output_start_lineno = php_output_get_start_lineno();
if (output_start_filename) {
sapi_module.sapi_error(E_WARNING, "Cannot modify header information - headers already sent by (output started at %s:%d)",
output_start_filename, output_start_lineno);
} else {
sapi_module.sapi_error(E_WARNING, "Cannot modify header information - headers already sent");
}
return FAILURE;
}
switch (op) {
case SAPI_HEADER_SET_STATUS:
sapi_update_response_code((int)(zend_intptr_t) arg);
return SUCCESS;
case SAPI_HEADER_ADD:
case SAPI_HEADER_REPLACE:
case SAPI_HEADER_DELETE: {
sapi_header_line *p = arg;
if (!p->line || !p->line_len) {
return FAILURE;
}
header_line = estrndup(p->line, p->line_len);
header_line_len = p->line_len;
http_response_code = p->response_code;
break;
}
case SAPI_HEADER_DELETE_ALL:
if (sapi_module.header_handler) {
sapi_module.header_handler(&sapi_header, op, &SG(sapi_headers));
}
zend_llist_clean(&SG(sapi_headers).headers);
return SUCCESS;
default:
return FAILURE;
}
/* cut off trailing spaces, linefeeds and carriage-returns */
if (header_line_len && isspace(header_line[header_line_len-1])) {
do {
header_line_len--;
} while(header_line_len && isspace(header_line[header_line_len-1]));
header_line[header_line_len]='\0';
}
if (op == SAPI_HEADER_DELETE) {
if (strchr(header_line, ':')) {
efree(header_line);
sapi_module.sapi_error(E_WARNING, "Header to delete may not contain colon.");
return FAILURE;
}
if (sapi_module.header_handler) {
sapi_header.header = header_line;
sapi_header.header_len = header_line_len;
sapi_module.header_handler(&sapi_header, op, &SG(sapi_headers));
}
sapi_remove_header(&SG(sapi_headers).headers, header_line, header_line_len);
efree(header_line);
return SUCCESS;
} else {
/* new line/NUL character safety check */
uint32_t i;
for (i = 0; i < header_line_len; i++) {
/* RFC 7230 ch. 3.2.4 deprecates folding support */
if (header_line[i] == '\n' || header_line[i] == '\r') {
efree(header_line);
sapi_module.sapi_error(E_WARNING, "Header may not contain "
"more than a single header, new line detected");
return FAILURE;
}
if (header_line[i] == '\0') {
efree(header_line);
sapi_module.sapi_error(E_WARNING, "Header may not contain NUL bytes");
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 (header_line_len>=5
&& !strncasecmp(header_line, "HTTP/", 5)) {
/* filter out the response code */
sapi_update_response_code(sapi_extract_response_code(header_line));
/* sapi_update_response_code doesn't free the status line if the code didn't change */
if (SG(sapi_headers).http_status_line) {
efree(SG(sapi_headers).http_status_line);
}
SG(sapi_headers).http_status_line = header_line;
return SUCCESS;
} else {
colon_offset = strchr(header_line, ':');
if (colon_offset) {
*colon_offset = 0;
if (!strcasecmp(header_line, "Content-Type")) {
char *ptr = colon_offset+1, *mimetype = NULL, *newheader;
size_t len = header_line_len - (ptr - header_line), newlen;
while (*ptr == ' ') {
ptr++;
len--;
}
mimetype = estrdup(ptr);
newlen = sapi_apply_default_charset(&mimetype, len);
if (!SG(sapi_headers).mimetype){
SG(sapi_headers).mimetype = estrdup(mimetype);
}
if (newlen != 0) {
newlen += sizeof("Content-type: ");
newheader = emalloc(newlen);
PHP_STRLCPY(newheader, "Content-type: ", newlen, sizeof("Content-type: ")-1);
strlcat(newheader, mimetype, newlen);
sapi_header.header = newheader;
sapi_header.header_len = (uint32_t)(newlen - 1);
efree(header_line);
}
efree(mimetype);
SG(sapi_headers).send_default_content_type = 0;
} else if (!strcasecmp(header_line, "Content-Length")) {
/* Script is setting Content-length. The script cannot reasonably
* know the size of the message body after compression, so it's best
* do disable compression altogether. This contributes to making scripts
* portable between setups that have and don't have zlib compression
* enabled globally. See req #44164 */
zend_string *key = zend_string_init("zlib.output_compression", sizeof("zlib.output_compression")-1, 0);
zend_alter_ini_entry_chars(key,
"0", sizeof("0") - 1, PHP_INI_USER, PHP_INI_STAGE_RUNTIME);
zend_string_release_ex(key, 0);
} else if (!strcasecmp(header_line, "Location")) {
if ((SG(sapi_headers).http_response_code < 300 ||
SG(sapi_headers).http_response_code > 399) &&
SG(sapi_headers).http_response_code != 201) {
/* Return a Found Redirect if one is not already specified */
if (http_response_code) { /* user specified redirect code */
sapi_update_response_code(http_response_code);
} else if (SG(request_info).proto_num > 1000 &&
SG(request_info).request_method &&
strcmp(SG(request_info).request_method, "HEAD") &&
strcmp(SG(request_info).request_method, "GET")) {
sapi_update_response_code(303);
} else {
sapi_update_response_code(302);
}
}
} else if (!strcasecmp(header_line, "WWW-Authenticate")) { /* HTTP Authentication */
sapi_update_response_code(401); /* authentication-required */
}
if (sapi_header.header==header_line) {
*colon_offset = ':';
}
}
}
if (http_response_code) {
sapi_update_response_code(http_response_code);
}
sapi_header_add_op(op, &sapi_header);
return SUCCESS;
}
SAPI_API int sapi_send_headers(void)
{
int retval;
int ret = FAILURE;
if (SG(headers_sent) || SG(request_info).no_headers) {
return SUCCESS;
}
/* Success-oriented. We set headers_sent to 1 here to avoid an infinite loop
* in case of an error situation.
*/
if (SG(sapi_headers).send_default_content_type && sapi_module.send_headers) {
uint32_t len = 0;
char *default_mimetype = get_default_content_type(0, &len);
if (default_mimetype && len) {
sapi_header_struct default_header;
SG(sapi_headers).mimetype = default_mimetype;
default_header.header_len = sizeof("Content-type: ") - 1 + len;
default_header.header = emalloc(default_header.header_len + 1);
memcpy(default_header.header, "Content-type: ", sizeof("Content-type: ") - 1);
memcpy(default_header.header + sizeof("Content-type: ") - 1, SG(sapi_headers).mimetype, len + 1);
sapi_header_add_op(SAPI_HEADER_ADD, &default_header);
} else {
efree(default_mimetype);
}
SG(sapi_headers).send_default_content_type = 0;
}
if (Z_TYPE(SG(callback_func)) != IS_UNDEF) {
zval cb;
ZVAL_COPY_VALUE(&cb, &SG(callback_func));
ZVAL_UNDEF(&SG(callback_func));
sapi_run_header_callback(&cb);
zval_ptr_dtor(&cb);
}
SG(headers_sent) = 1;
if (sapi_module.send_headers) {
retval = sapi_module.send_headers(&SG(sapi_headers));
} else {
retval = SAPI_HEADER_DO_SEND;
}
switch (retval) {
case SAPI_HEADER_SENT_SUCCESSFULLY:
ret = SUCCESS;
break;
case SAPI_HEADER_DO_SEND: {
sapi_header_struct http_status_line;
char buf[255];
if (SG(sapi_headers).http_status_line) {
http_status_line.header = SG(sapi_headers).http_status_line;
http_status_line.header_len = (uint32_t)strlen(SG(sapi_headers).http_status_line);
} else {
http_status_line.header = buf;
http_status_line.header_len = slprintf(buf, sizeof(buf), "HTTP/1.0 %d X", SG(sapi_headers).http_response_code);
}
sapi_module.send_header(&http_status_line, SG(server_context));
}
zend_llist_apply_with_argument(&SG(sapi_headers).headers, (llist_apply_with_arg_func_t) 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);
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;
}
sapi_send_headers_free();
return ret;
}
SAPI_API int sapi_register_post_entries(const sapi_post_entry *post_entries)
{
const 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(const sapi_post_entry *post_entry)
{
int ret;
zend_string *key;
if (SG(sapi_started) && EG(current_execute_data)) {
return FAILURE;
}
key = zend_string_init(post_entry->content_type, post_entry->content_type_len, 1);
GC_MAKE_PERSISTENT_LOCAL(key);
ret = zend_hash_add_mem(&SG(known_post_content_types), key,
(void *) post_entry, sizeof(sapi_post_entry)) ? SUCCESS : FAILURE;
zend_string_release_ex(key, 1);
return ret;
}
SAPI_API void sapi_unregister_post_entry(const sapi_post_entry *post_entry)
{
if (SG(sapi_started) && EG(current_execute_data)) {
return;
}
zend_hash_str_del(&SG(known_post_content_types), post_entry->content_type,
post_entry->content_type_len);
}
SAPI_API int sapi_register_default_post_reader(void (*default_post_reader)(void))
{
if (SG(sapi_started) && EG(current_execute_data)) {
return FAILURE;
}
sapi_module.default_post_reader = default_post_reader;
return SUCCESS;
}
SAPI_API int sapi_register_treat_data(void (*treat_data)(int arg, char *str, zval *destArray))
{
if (SG(sapi_started) && EG(current_execute_data)) {
return FAILURE;
}
sapi_module.treat_data = treat_data;
return SUCCESS;
}
SAPI_API int sapi_register_input_filter(unsigned int (*input_filter)(int arg, const char *var, char **val, size_t val_len, size_t *new_val_len), unsigned int (*input_filter_init)(void))
{
if (SG(sapi_started) && EG(current_execute_data)) {
return FAILURE;
}
sapi_module.input_filter = input_filter;
sapi_module.input_filter_init = input_filter_init;
return SUCCESS;
}
SAPI_API int sapi_flush(void)
{
if (sapi_module.flush) {
sapi_module.flush(SG(server_context));
return SUCCESS;
} else {
return FAILURE;
}
}
SAPI_API zend_stat_t *sapi_get_stat(void)
{
if (sapi_module.get_stat) {
return sapi_module.get_stat();
} else {
if (!SG(request_info).path_translated || (VCWD_STAT(SG(request_info).path_translated, &SG(global_stat)) == -1)) {
return NULL;
}
return &SG(global_stat);
}
}
SAPI_API char *sapi_getenv(const char *name, size_t name_len)
{
if (!strncasecmp(name, "HTTP_PROXY", name_len)) {
/* Ugly fix for HTTP_PROXY issue, see bug #72573 */
return NULL;
}
if (sapi_module.getenv) {
char *value, *tmp = sapi_module.getenv(name, name_len);
if (tmp) {
value = estrdup(tmp);
#ifdef PHP_WIN32
if (strlen(sapi_module.name) == sizeof("cgi-fcgi") - 1 && !strcmp(sapi_module.name, "cgi-fcgi")) {
/* XXX more modules to go, if needed. */
free(tmp);
}
#endif
} else {
return NULL;
}
if (sapi_module.input_filter) {
sapi_module.input_filter(PARSE_STRING, name, &value, strlen(value), NULL);
}
return value;
}
return NULL;
}
SAPI_API int sapi_get_fd(int *fd)
{
if (sapi_module.get_fd) {
return sapi_module.get_fd(fd);
} else {
return FAILURE;
}
}
SAPI_API int sapi_force_http_10(void)
{
if (sapi_module.force_http_10) {
return sapi_module.force_http_10();
} else {
return FAILURE;
}
}
SAPI_API int sapi_get_target_uid(uid_t *obj)
{
if (sapi_module.get_target_uid) {
return sapi_module.get_target_uid(obj);
} else {
return FAILURE;
}
}
SAPI_API int sapi_get_target_gid(gid_t *obj)
{
if (sapi_module.get_target_gid) {
return sapi_module.get_target_gid(obj);
} else {
return FAILURE;
}
}
SAPI_API double sapi_get_request_time(void)
{
if(SG(global_request_time)) return SG(global_request_time);
if (sapi_module.get_request_time && SG(server_context)) {
SG(global_request_time) = sapi_module.get_request_time();
} else {
struct timeval tp = {0};
if (!gettimeofday(&tp, NULL)) {
SG(global_request_time) = (double)(tp.tv_sec + tp.tv_usec / 1000000.00);
} else {
SG(global_request_time) = (double)time(0);
}
}
return SG(global_request_time);
}
SAPI_API void sapi_terminate_process(void) {
if (sapi_module.terminate_process) {
sapi_module.terminate_process();
}
}
SAPI_API void sapi_add_request_header(const char *var, unsigned int var_len, char *val, unsigned int val_len, void *arg) /* {{{ */
{
zval *return_value = (zval*)arg;
char *buf = NULL;
ALLOCA_FLAG(use_heap)
if (var_len > 5 &&
var[0] == 'H' &&
var[1] == 'T' &&
var[2] == 'T' &&
var[3] == 'P' &&
var[4] == '_') {
const char *p;
char *str;
var_len -= 5;
p = var + 5;
var = str = buf = do_alloca(var_len + 1, use_heap);
*str++ = *p++;
while (*p) {
if (*p == '_') {
*str++ = '-';
p++;
if (*p) {
*str++ = *p++;
}
} else if (*p >= 'A' && *p <= 'Z') {
*str++ = (*p++ - 'A' + 'a');
} else {
*str++ = *p++;
}
}
*str = 0;
} else if (var_len == sizeof("CONTENT_TYPE")-1 &&
memcmp(var, "CONTENT_TYPE", sizeof("CONTENT_TYPE")-1) == 0) {
var = "Content-Type";
} else if (var_len == sizeof("CONTENT_LENGTH")-1 &&
memcmp(var, "CONTENT_LENGTH", sizeof("CONTENT_LENGTH")-1) == 0) {
var = "Content-Length";
} else {
return;
}
add_assoc_stringl_ex(return_value, var, var_len, val, val_len);
if (buf) {
free_alloca(buf, use_heap);
}
}
/* }}} */
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