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php-src/main/rfc1867.c

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/*
+----------------------------------------------------------------------+
| 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@php.net> |
| Jani Taskinen <sniper@php.net> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
/*
* This product includes software developed by the Apache Group
* for use in the Apache HTTP server project (http://www.apache.org/).
*
*/
#include <stdio.h>
#include "php.h"
#include "php_open_temporary_file.h"
#include "zend_globals.h"
#include "php_globals.h"
#include "php_variables.h"
#include "rfc1867.h"
#define SAFE_RETURN { \
if (lbuf) efree(lbuf); \
if (abuf) efree(abuf); \
if (array_index) efree(array_index); \
zend_hash_destroy(&PG(rfc1867_protected_variables)); \
zend_llist_destroy(&header); \
if (mbuff->boundary_next) efree(mbuff->boundary_next); \
if (mbuff->boundary) efree(mbuff->boundary); \
if (mbuff->buffer) efree(mbuff->buffer); \
if (mbuff) efree(mbuff); \
return; }
/* The longest property name we use in an uploaded file array */
#define MAX_SIZE_OF_INDEX sizeof("[tmp_name]")
/* Errors */
#define UPLOAD_ERROR_A 1 /* Uploaded file exceeded upload_max_filesize */
#define UPLOAD_ERROR_B 2 /* Uploaded file exceeded MAX_FILE_SIZE */
#define UPLOAD_ERROR_C 3 /* Only partiallly uploaded */
#define UPLOAD_ERROR_D 4 /* No file uploaded */
#define UPLOAD_ERROR_E 5 /* Uploaded file size 0 bytes */
static void add_protected_variable(char *varname TSRMLS_DC)
{
int dummy=1;
zend_hash_add(&PG(rfc1867_protected_variables), varname, strlen(varname)+1, &dummy, sizeof(int), NULL);
}
static zend_bool is_protected_variable(char *varname TSRMLS_DC)
{
return zend_hash_exists(&PG(rfc1867_protected_variables), varname, strlen(varname)+1);
}
static void safe_php_register_variable(char *var, char *strval, zval *track_vars_array, zend_bool override_protection TSRMLS_DC)
{
if (override_protection || !is_protected_variable(var TSRMLS_CC)) {
php_register_variable(var, strval, track_vars_array TSRMLS_CC);
}
}
static void safe_php_register_variable_ex(char *var, zval *val, zval *track_vars_array, zend_bool override_protection TSRMLS_DC)
{
if (override_protection || !is_protected_variable(var TSRMLS_CC)) {
php_register_variable_ex(var, val, track_vars_array TSRMLS_CC);
}
}
static void register_http_post_files_variable(char *strvar, char *val, zval *http_post_files, zend_bool override_protection TSRMLS_DC)
{
int register_globals = PG(register_globals);
PG(register_globals) = 0;
safe_php_register_variable(strvar, val, http_post_files, override_protection TSRMLS_CC);
PG(register_globals) = register_globals;
}
static void register_http_post_files_variable_ex(char *var, zval *val, zval *http_post_files, zend_bool override_protection TSRMLS_DC)
{
int register_globals = PG(register_globals);
PG(register_globals) = 0;
safe_php_register_variable_ex(var, val, http_post_files, override_protection TSRMLS_CC);
PG(register_globals) = register_globals;
}
static int unlink_filename(char **filename TSRMLS_DC)
{
VCWD_UNLINK(*filename);
return 0;
}
void destroy_uploaded_files_hash(TSRMLS_D)
{
zend_hash_apply(SG(rfc1867_uploaded_files), (apply_func_t) unlink_filename TSRMLS_CC);
zend_hash_destroy(SG(rfc1867_uploaded_files));
FREE_HASHTABLE(SG(rfc1867_uploaded_files));
}
/*
* Following code is based on apache_multipart_buffer.c from libapreq-0.33 package.
*
*/
#define FILLUNIT (1024 * 5)
typedef struct {
/* read buffer */
char *buffer;
char *buf_begin;
int bufsize;
int bytes_in_buffer;
/* boundary info */
char *boundary;
char *boundary_next;
int boundary_next_len;
} multipart_buffer;
typedef struct {
char *key;
char *value;
} mime_header_entry;
/*
fill up the buffer with client data.
returns number of bytes added to buffer.
*/
static int fill_buffer(multipart_buffer *self TSRMLS_DC)
{
int bytes_to_read, actual_read = 0;
/* shift the existing data if necessary */
if (self->bytes_in_buffer > 0 && self->buf_begin != self->buffer) {
memmove(self->buffer, self->buf_begin, self->bytes_in_buffer);
}
self->buf_begin = self->buffer;
/* calculate the free space in the buffer */
bytes_to_read = self->bufsize - self->bytes_in_buffer;
/* read the required number of bytes */
if (bytes_to_read > 0) {
char *buf = self->buffer + self->bytes_in_buffer;
actual_read = sapi_module.read_post(buf, bytes_to_read TSRMLS_CC);
/* update the buffer length */
if (actual_read > 0) {
self->bytes_in_buffer += actual_read;
SG(read_post_bytes) += actual_read;
}
}
return actual_read;
}
/* eof if we are out of bytes, or if we hit the final boundary */
static int multipart_buffer_eof(multipart_buffer *self TSRMLS_DC)
{
if ( (self->bytes_in_buffer == 0 && fill_buffer(self TSRMLS_CC) < 1) ) {
return 1;
} else {
return 0;
}
}
/* create new multipart_buffer structure */
static multipart_buffer *multipart_buffer_new(char *boundary, int boundary_len)
{
multipart_buffer *self = (multipart_buffer *) ecalloc(1, sizeof(multipart_buffer));
int minsize = boundary_len + 6;
if (minsize < FILLUNIT) minsize = FILLUNIT;
self->buffer = (char *) ecalloc(1, minsize + 1);
self->bufsize = minsize;
self->boundary = (char *) ecalloc(1, boundary_len + 3);
sprintf(self->boundary, "--%s", boundary);
self->boundary_next = (char *) ecalloc(1, boundary_len + 4);
sprintf(self->boundary_next, "\n--%s", boundary);
self->boundary_next_len = boundary_len + 3;
self->buf_begin = self->buffer;
self->bytes_in_buffer = 0;
return self;
}
/*
gets the next CRLF terminated line from the input buffer.
if it doesn't find a CRLF, and the buffer isn't completely full, returns
NULL; otherwise, returns the beginning of the null-terminated line,
minus the CRLF.
note that we really just look for LF terminated lines. this works
around a bug in internet explorer for the macintosh which sends mime
boundaries that are only LF terminated when you use an image submit
button in a multipart/form-data form.
*/
static char *next_line(multipart_buffer *self)
{
/* look for LF in the data */
char* line = self->buf_begin;
char* ptr = memchr(self->buf_begin, '\n', self->bytes_in_buffer);
if (ptr) { /* LF found */
/* terminate the string, remove CRLF */
if ((ptr - line) > 0 && *(ptr-1) == '\r') {
*(ptr-1) = 0;
} else {
*ptr = 0;
}
/* bump the pointer */
self->buf_begin = ptr + 1;
self->bytes_in_buffer -= (self->buf_begin - line);
} else { /* no LF found */
/* buffer isn't completely full, fail */
if (self->bytes_in_buffer < self->bufsize) {
return NULL;
}
/* return entire buffer as a partial line */
line[self->bufsize] = 0;
self->buf_begin = ptr;
self->bytes_in_buffer = 0;
}
return line;
}
/* returns the next CRLF terminated line from the client */
static char *get_line(multipart_buffer *self TSRMLS_DC)
{
char* ptr = next_line(self);
if (!ptr) {
fill_buffer(self TSRMLS_CC);
ptr = next_line(self);
}
return ptr;
}
/* Free header entry */
static void php_free_hdr_entry(mime_header_entry *h)
{
if (h->key) {
efree(h->key);
}
if (h->value) {
efree(h->value);
}
}
/* finds a boundary */
static int find_boundary(multipart_buffer *self, char *boundary TSRMLS_DC)
{
char *line;
/* loop thru lines */
while( (line = get_line(self TSRMLS_CC)) )
{
/* finished if we found the boundary */
if (!strcmp(line, boundary)) {
return 1;
}
}
/* didn't find the boundary */
return 0;
}
/* parse headers */
static int multipart_buffer_headers(multipart_buffer *self, zend_llist *header TSRMLS_DC)
{
char *line;
mime_header_entry prev_entry, entry;
int prev_len, cur_len;
/* didn't find boundary, abort */
if (!find_boundary(self, self->boundary TSRMLS_CC)) {
return 0;
}
/* get lines of text, or CRLF_CRLF */
while( (line = get_line(self TSRMLS_CC)) && strlen(line) > 0 )
{
/* add header to table */
char *key = line;
char *value = strchr(line, ':');
if (value) {
*value = 0;
do { value++; } while(isspace(*value));
entry.value = estrdup(value);
entry.key = estrdup(key);
} else if (zend_llist_remove_tail(header)) { /* If no ':' on the line, add to previous line */
prev_len = strlen(prev_entry.value);
cur_len = strlen(line);
entry.value = emalloc(prev_len + cur_len + 1);
memcpy(entry.value, prev_entry.value, prev_len);
memcpy(entry.value + prev_len, line, cur_len);
entry.value[cur_len + prev_len] = '\0';
entry.key = estrdup(prev_entry.key);
}
zend_llist_add_element(header, &entry);
prev_entry = entry;
}
return 1;
}
static char *php_mime_get_hdr_value(zend_llist header, char *key)
{
mime_header_entry *entry;
if (key == NULL) {
return NULL;
}
entry = zend_llist_get_first(&header);
do {
if (!strcasecmp(entry->key, key)) {
return entry->value;
}
} while ((entry = zend_llist_get_next(&header)));
return NULL;
}
static char *php_ap_getword(char **line, char stop)
{
char *pos = *line, quote;
char *res;
while (*pos && *pos != stop) {
if ((quote = *pos) == '"' || quote == '\'') {
++pos;
while (*pos && *pos != quote) {
if (*pos == '\\' && pos[1] && pos[1] == quote) {
pos += 2;
} else {
++pos;
}
}
++pos;
} else ++pos;
}
if (*pos == '\0') {
res = estrdup(*line);
*line += strlen(*line);
return res;
}
res = estrndup(*line, pos - *line);
while (*pos == stop) {
++pos;
}
*line = pos;
return res;
}
static char *substring_conf(char *start, int len, char quote)
{
char *result = emalloc(len + 2);
char *resp = result;
int i;
for (i = 0; i < len; ++i) {
if (start[i] == '\\' && (start[i + 1] == '\\' || (quote && start[i + 1] == quote))) {
*resp++ = start[++i];
} else {
*resp++ = start[i];
}
}
*resp++ = '\0';
return result;
}
static char *php_ap_getword_conf(char **line)
{
char *str = *line, *strend, *res, quote;
while (*str && isspace(*str)) {
++str;
}
if (!*str) {
*line = str;
return estrdup("");
}
if ((quote = *str) == '"' || quote == '\'') {
strend = str + 1;
while (*strend && *strend != quote) {
if (*strend == '\\' && strend[1] && strend[1] == quote) {
strend += 2;
} else {
++strend;
}
}
res = substring_conf(str + 1, strend - str - 1, quote);
if (*strend == quote) {
++strend;
}
} else {
strend = str;
while (*strend && !isspace(*strend)) {
++strend;
}
res = substring_conf(str, strend - str, 0);
}
while (*strend && isspace(*strend)) {
++strend;
}
*line = strend;
return res;
}
/*
search for a string in a fixed-length byte string.
if partial is true, partial matches are allowed at the end of the buffer.
returns NULL if not found, or a pointer to the start of the first match.
*/
static void *php_ap_memstr(char *haystack, int haystacklen, char *needle, int needlen, int partial)
{
int len = haystacklen;
char *ptr = haystack;
/* iterate through first character matches */
while( (ptr = memchr(ptr, needle[0], len)) ) {
/* calculate length after match */
len = haystacklen - (ptr - (char *)haystack);
/* done if matches up to capacity of buffer */
if (memcmp(needle, ptr, needlen < len ? needlen : len) == 0 && (partial || len >= needlen)) {
break;
}
/* next character */
ptr++; len--;
}
return ptr;
}
/* read until a boundary condition */
static int multipart_buffer_read(multipart_buffer *self, char *buf, int bytes TSRMLS_DC)
{
int len, max;
char *bound;
/* fill buffer if needed */
if (bytes > self->bytes_in_buffer) {
fill_buffer(self TSRMLS_CC);
}
/* look for a potential boundary match, only read data up to that point */
if ((bound = php_ap_memstr(self->buf_begin, self->bytes_in_buffer, self->boundary_next, self->boundary_next_len, 1))) {
max = bound - self->buf_begin;
} else {
max = self->bytes_in_buffer;
}
/* maximum number of bytes we are reading */
len = max < bytes-1 ? max : bytes-1;
/* if we read any data... */
if (len > 0) {
/* copy the data */
memcpy(buf, self->buf_begin, len);
buf[len] = 0;
if (bound && len > 0 && buf[len-1] == '\r') {
buf[--len] = 0;
}
/* update the buffer */
self->bytes_in_buffer -= len;
self->buf_begin += len;
}
return len;
}
/*
XXX: this is horrible memory-usage-wise, but we only expect
to do this on small pieces of form data.
*/
static char *multipart_buffer_read_body(multipart_buffer *self TSRMLS_DC)
{
char buf[FILLUNIT], *out=NULL;
int total_bytes=0, read_bytes=0;
while((read_bytes = multipart_buffer_read(self, buf, sizeof(buf) TSRMLS_CC))) {
out = erealloc(out, total_bytes + read_bytes + 1);
memcpy(out + total_bytes, buf, read_bytes);
total_bytes += read_bytes;
}
if (out) out[total_bytes] = '\0';
return out;
}
/*
* The combined READER/HANDLER
*
*/
SAPI_API SAPI_POST_HANDLER_FUNC(rfc1867_post_handler)
{
char *boundary, *s=NULL, *start_arr=NULL, *array_index=NULL;
char *temp_filename=NULL, *lbuf=NULL, *abuf=NULL;
int boundary_len=0, total_bytes=0, cancel_upload=0, is_arr_upload=0, array_len=0, max_file_size=0;
zval *http_post_files=NULL;
zend_bool magic_quotes_gpc;
multipart_buffer *mbuff;
zval *array_ptr = (zval *) arg;
FILE *fp;
zend_llist header;
if (!PG(file_uploads)) {
sapi_module.sapi_error(E_WARNING, "File uploads are disabled");
return;
}
if (SG(request_info).content_length > SG(post_max_size)) {
sapi_module.sapi_error(E_WARNING, "POST Content-Length of %d bytes exceeds the limit of %d bytes", SG(request_info).content_length, SG(post_max_size));
return;
}
/* Get the boundary */
boundary = strstr(content_type_dup, "boundary");
if (!boundary || !(boundary=strchr(boundary, '='))) {
sapi_module.sapi_error(E_WARNING, "Missing boundary in multipart/form-data POST data");
return;
}
boundary++;
boundary_len = strlen(boundary);
if (boundary[0] == '"' && boundary[boundary_len-1] == '"') {
if (boundary_len < 2) { /* otherwise a single " passes */
sapi_module.sapi_error(E_WARNING, "Invalid boundary in multipart/form-data POST data");
return;
}
boundary++;
boundary_len -= 2;
boundary[boundary_len] = '\0';
}
/* Initialize the buffer */
if (!(mbuff = multipart_buffer_new(boundary, boundary_len))) {
sapi_module.sapi_error(E_WARNING, "Unable to initialize the input buffer");
return;
}
/* Initialize $_FILES[] */
zend_hash_init(&PG(rfc1867_protected_variables), 5, NULL, NULL, 0);
ALLOC_HASHTABLE(SG(rfc1867_uploaded_files));
zend_hash_init(SG(rfc1867_uploaded_files), 5, NULL, (dtor_func_t) free_estring, 0);
ALLOC_ZVAL(http_post_files);
array_init(http_post_files);
INIT_PZVAL(http_post_files);
PG(http_globals)[TRACK_VARS_FILES] = http_post_files;
zend_llist_init(&header, sizeof(mime_header_entry), (llist_dtor_func_t) php_free_hdr_entry, 0);
while (!multipart_buffer_eof(mbuff TSRMLS_CC))
{
char buff[FILLUNIT];
char *cd=NULL,*param=NULL,*filename=NULL;
int blen=0, wlen=0;
zend_llist_clean(&header);
if (!multipart_buffer_headers(mbuff, &header TSRMLS_CC)) {
SAFE_RETURN;
}
if ((cd = php_mime_get_hdr_value(header, "Content-Disposition"))) {
char *pair=NULL;
while (isspace(*cd)) {
++cd;
}
while (*cd && (pair = php_ap_getword(&cd, ';')))
{
char *key=NULL, *word = pair;
while (isspace(*cd)) {
++cd;
}
if (strchr(pair, '=')) {
key = php_ap_getword(&pair, '=');
if (!strcmp(key, "name")) {
if (param) {
efree(param);
}
param = php_ap_getword_conf(&pair);
} else if (!strcmp(key, "filename")) {
if (filename) {
efree(filename);
}
filename = php_ap_getword_conf(&pair);
}
}
if (key) {
efree(key);
}
efree(word);
}
/* Normal form variable, safe to read all data into memory */
if (!filename && param) {
char *value = multipart_buffer_read_body(mbuff TSRMLS_CC);
if (!value) {
value = estrdup("");
}
safe_php_register_variable(param, value, array_ptr, 0 TSRMLS_CC);
if (!strcmp(param, "MAX_FILE_SIZE")) {
max_file_size = atol(value);
}
efree(param);
efree(value);
continue;
}
/* Handle file */
fp = php_open_temporary_file(PG(upload_tmp_dir), "php", &temp_filename TSRMLS_CC);
if (!fp) {
sapi_module.sapi_error(E_WARNING, "File upload error - unable to create a temporary file");
SAFE_RETURN;
}
total_bytes = 0;
cancel_upload = 0;
if(strlen(filename) == 0) {
sapi_module.sapi_error(E_WARNING, "No file uploaded");
cancel_upload = UPLOAD_ERROR_D;
}
while (!cancel_upload && (blen = multipart_buffer_read(mbuff, buff, sizeof(buff) TSRMLS_CC)))
{
if (total_bytes > PG(upload_max_filesize)) {
sapi_module.sapi_error(E_WARNING, "upload_max_filesize of %ld bytes exceeded - file [%s=%s] not saved", PG(upload_max_filesize), param, filename);
cancel_upload = UPLOAD_ERROR_A;
} else if (max_file_size && (total_bytes > max_file_size)) {
sapi_module.sapi_error(E_WARNING, "MAX_FILE_SIZE of %ld bytes exceeded - file [%s=%s] not saved", max_file_size, param, filename);
cancel_upload = UPLOAD_ERROR_B;
} else if (blen > 0) {
wlen = fwrite(buff, 1, blen, fp);
if (wlen < blen) {
sapi_module.sapi_error(E_WARNING, "Only %d bytes were written, expected to write %ld", wlen, blen);
cancel_upload = UPLOAD_ERROR_C;
} else {
total_bytes += wlen;
}
}
}
fclose(fp);
if(strlen(filename) > 0 && total_bytes == 0) {
sapi_module.sapi_error(E_WARNING, "Uploaded file size 0 - file [%s=%s] not saved", param, filename);
cancel_upload = UPLOAD_ERROR_E;
}
if (cancel_upload || total_bytes == 0) {
if (temp_filename) {
unlink(temp_filename);
efree(temp_filename);
}
temp_filename="";
} else {
zend_hash_add(SG(rfc1867_uploaded_files), temp_filename, strlen(temp_filename) + 1, &temp_filename, sizeof(char *), NULL);
}
/* is_arr_upload is true when name of file upload field
* ends in [.*]
* start_arr is set to point to 1st [
*/
is_arr_upload = (start_arr = strchr(param,'[')) &&
(param[strlen(param)-1] == ']');
if (is_arr_upload) {
array_len = strlen(start_arr);
if (array_index) {
efree(array_index);
}
array_index = estrndup(start_arr+1, array_len-2);
}
/* Add $foo_name */
if (lbuf) {
efree(lbuf);
}
lbuf = (char *) emalloc(strlen(param) + MAX_SIZE_OF_INDEX + 1);
if (is_arr_upload) {
if (abuf) efree(abuf);
abuf = estrndup(param, strlen(param)-array_len);
sprintf(lbuf, "%s_name[%s]", abuf, array_index);
} else {
sprintf(lbuf, "%s_name", param);
}
s = strrchr(filename, '\\');
if (s && s > filename) {
safe_php_register_variable(lbuf, s+1, NULL, 0 TSRMLS_CC);
} else {
safe_php_register_variable(lbuf, filename, NULL, 0 TSRMLS_CC);
}
/* Add $foo[name] */
if (is_arr_upload) {
sprintf(lbuf, "%s[name][%s]", abuf, array_index);
} else {
sprintf(lbuf, "%s[name]", param);
}
if (s && s > filename) {
register_http_post_files_variable(lbuf, s+1, http_post_files, 0 TSRMLS_CC);
} else {
register_http_post_files_variable(lbuf, filename, http_post_files, 0 TSRMLS_CC);
}
efree(filename);
s = NULL;
/* Possible Content-Type: */
if (!(cd = php_mime_get_hdr_value(header, "Content-Type")) || filename == "") {
cd = "";
} else {
/* fix for Opera 6.01 */
s = strchr(cd, ';');
if (s != NULL) {
*s = '\0';
}
}
/* Add $foo_type */
if (is_arr_upload) {
sprintf(lbuf, "%s_type[%s]", abuf, array_index);
} else {
sprintf(lbuf, "%s_type", param);
}
safe_php_register_variable(lbuf, cd, NULL, 0 TSRMLS_CC);
/* Add $foo[type] */
if (is_arr_upload) {
sprintf(lbuf, "%s[type][%s]", abuf, array_index);
} else {
sprintf(lbuf, "%s[type]", param);
}
register_http_post_files_variable(lbuf, cd, http_post_files, 0 TSRMLS_CC);
/* Restore Content-Type Header */
if (s != NULL) {
*s = ';';
}
s = "";
/* Initialize variables */
add_protected_variable(param TSRMLS_CC);
magic_quotes_gpc = PG(magic_quotes_gpc);
PG(magic_quotes_gpc) = 0;
/* if param is of form xxx[.*] this will cut it to xxx */
safe_php_register_variable(param, temp_filename, NULL, 1 TSRMLS_CC);
/* Add $foo[tmp_name] */
if (is_arr_upload) {
sprintf(lbuf, "%s[tmp_name][%s]", abuf, array_index);
} else {
sprintf(lbuf, "%s[tmp_name]", param);
}
add_protected_variable(lbuf TSRMLS_CC);
register_http_post_files_variable(lbuf, temp_filename, http_post_files, 1 TSRMLS_CC);
PG(magic_quotes_gpc) = magic_quotes_gpc;
{
zval file_size, error_type;
error_type.value.lval = cancel_upload;
error_type.type = IS_LONG;
/* Add $foo[error] */
if (cancel_upload) {
file_size.value.lval = 0;
file_size.type = IS_LONG;
} else {
file_size.value.lval = total_bytes;
file_size.type = IS_LONG;
}
if (is_arr_upload) {
sprintf(lbuf, "%s[error][%s]", abuf, array_index);
} else {
sprintf(lbuf, "%s[error]", param);
}
register_http_post_files_variable_ex(lbuf, &error_type, http_post_files, 0 TSRMLS_CC);
/* Add $foo_size */
if (is_arr_upload) {
sprintf(lbuf, "%s_size[%s]", abuf, array_index);
} else {
sprintf(lbuf, "%s_size", param);
}
safe_php_register_variable_ex(lbuf, &file_size, NULL, 0 TSRMLS_CC);
/* Add $foo[size] */
if (is_arr_upload) {
sprintf(lbuf, "%s[size][%s]", abuf, array_index);
} else {
sprintf(lbuf, "%s[size]", param);
}
register_http_post_files_variable_ex(lbuf, &file_size, http_post_files, 0 TSRMLS_CC);
}
efree(param);
}
}
SAFE_RETURN;
}
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: sw=4 ts=4 fdm=marker
* vim<600: sw=4 ts=4
*/
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