php-src/ext/standard/http_fopen_wrapper.c
2001-12-23 00:46:13 +00:00

333 lines
9.5 KiB
C

/*
+----------------------------------------------------------------------+
| PHP Version 4 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2002 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 2.02 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available at through the world-wide-web at |
| http://www.php.net/license/2_02.txt. |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Authors: Rasmus Lerdorf <rasmus@lerdorf.on.ca> |
| Jim Winstead <jimw@php.net> |
| Hartmut Holzgraefe <hholzgra@php.net> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#include "php.h"
#include "php_globals.h"
#include "php_network.h"
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#ifdef PHP_WIN32
#include <windows.h>
#include <winsock.h>
#define O_RDONLY _O_RDONLY
#include "win32/param.h"
#else
#include <sys/param.h>
#endif
#include "php_standard.h"
#include <sys/types.h>
#if HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef PHP_WIN32
#include <winsock.h>
#else
#include <netinet/in.h>
#include <netdb.h>
#if HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
#endif
#if defined(PHP_WIN32) || defined(__riscos__)
#undef AF_UNIX
#endif
#if defined(AF_UNIX)
#include <sys/un.h>
#endif
#include "php_fopen_wrappers.h"
#define HTTP_HEADER_BLOCK_SIZE 128
/* {{{ php_fopen_url_wrap_http
*/
FILE *php_fopen_url_wrap_http(const char *path, char *mode, int options, int *issock, int *socketd, char **opened_path TSRMLS_DC)
{
FILE *fp=NULL;
php_url *resource=NULL;
char tmp_line[128];
char location[512];
char hdr_line[8192];
int body = 0;
char *scratch;
unsigned char *tmp;
int len;
int reqok = 0;
zval *response_header;
char *http_header_line;
int http_header_line_length, http_header_line_size;
resource = php_url_parse((char *) path);
if (resource == NULL) {
php_error(E_WARNING, "Invalid URL specified, %s", path);
*issock = BAD_URL;
return NULL;
}
/* use port 80 if one wasn't specified */
if (resource->port == 0) {
resource->port = 80;
}
*socketd = php_hostconnect(resource->host, resource->port, SOCK_STREAM, 0);
if (*socketd == -1) {
SOCK_FCLOSE(*socketd);
*socketd = 0;
php_url_free(resource);
return NULL;
}
#if 0
if ((fp = fdopen(*socketd, "r+")) == NULL) {
php_url_free(resource);
return NULL;
}
#ifdef HAVE_SETVBUF
if ((setvbuf(fp, NULL, _IONBF, 0)) != 0) {
php_url_free(resource);
return NULL;
}
#endif
#endif /*win32 */
strcpy(hdr_line, "GET ");
/* tell remote http which file to get */
if (resource->path != NULL && *resource->path) {
strlcat(hdr_line, resource->path, sizeof(hdr_line));
} else {
strlcat(hdr_line, "/", sizeof(hdr_line));
}
/* append the query string, if any */
if (resource->query != NULL) {
strlcat(hdr_line, "?", sizeof(hdr_line));
strlcat(hdr_line, resource->query, sizeof(hdr_line));
}
strlcat(hdr_line, " HTTP/1.0\r\n", sizeof(hdr_line));
SOCK_WRITE(hdr_line, *socketd);
/* send authorization header if we have user/pass */
if (resource->user != NULL && resource->pass != NULL) {
scratch = (char *) emalloc(strlen(resource->user) + strlen(resource->pass) + 2);
if (!scratch) {
php_url_free(resource);
return NULL;
}
strcpy(scratch, resource->user);
strcat(scratch, ":");
strcat(scratch, resource->pass);
tmp = php_base64_encode((unsigned char *)scratch, strlen(scratch), NULL);
if (snprintf(hdr_line, sizeof(hdr_line),
"Authorization: Basic %s\r\n", tmp) > 0) {
SOCK_WRITE(hdr_line, *socketd);
}
efree(scratch);
efree(tmp);
}
/* if the user has configured who they are, send a From: line */
if (cfg_get_string("from", &scratch) == SUCCESS) {
if (snprintf(hdr_line, sizeof(hdr_line),
"From: %s\r\n", scratch) > 0) {
SOCK_WRITE(hdr_line, *socketd);
}
}
/* send a Host: header so name-based virtual hosts work */
if (resource->port != 80) {
len = snprintf(hdr_line, sizeof(hdr_line),
"Host: %s:%i\r\n", resource->host, resource->port);
} else {
len = snprintf(hdr_line, sizeof(hdr_line),
"Host: %s\r\n", resource->host);
}
if(len > sizeof(hdr_line) - 1) {
len = sizeof(hdr_line) - 1;
}
if (len > 0) {
SOCK_WRITE(hdr_line, *socketd);
}
/* identify ourselves and end the headers */
SOCK_WRITE("User-Agent: PHP/" PHP_VERSION "\r\n\r\n", *socketd);
body = 0;
location[0] = '\0';
MAKE_STD_ZVAL(response_header);
array_init(response_header);
if (!SOCK_FEOF(*socketd)) {
/* get response header */
if (SOCK_FGETS(tmp_line, sizeof(tmp_line)-1, *socketd) != NULL) {
zval *http_response;
MAKE_STD_ZVAL(http_response);
if (strncmp(tmp_line + 8, " 200 ", 5) == 0) {
reqok = 1;
}
Z_STRLEN_P(http_response) = strlen(tmp_line);
Z_STRVAL_P(http_response) = estrndup(tmp_line, Z_STRLEN_P(http_response));
if (Z_STRVAL_P(http_response)[Z_STRLEN_P(http_response)-1]=='\n') {
Z_STRVAL_P(http_response)[Z_STRLEN_P(http_response)-1]=0;
Z_STRLEN_P(http_response)--;
if (Z_STRVAL_P(http_response)[Z_STRLEN_P(http_response)-1]=='\r') {
Z_STRVAL_P(http_response)[Z_STRLEN_P(http_response)-1]=0;
Z_STRLEN_P(http_response)--;
}
}
Z_TYPE_P(http_response) = IS_STRING;
zend_hash_next_index_insert(Z_ARRVAL_P(response_header), &http_response, sizeof(zval *), NULL);
}
}
/* Read past HTTP headers */
while (!body && !SOCK_FEOF(*socketd)) {
http_header_line = emalloc(HTTP_HEADER_BLOCK_SIZE);
http_header_line_size = HTTP_HEADER_BLOCK_SIZE;
http_header_line_length = 0;
if (SOCK_FGETS(http_header_line, HTTP_HEADER_BLOCK_SIZE-1, *socketd) != NULL) {
char *p;
zend_bool found_eol=0;
zval *http_header;
http_header_line[HTTP_HEADER_BLOCK_SIZE-1] = '\0';
do {
p = http_header_line+http_header_line_length;
while (*p) {
while (*p == '\n' || *p == '\r') {
*p = '\0';
p--;
found_eol=1;
}
if (found_eol) {
break;
}
p++;
}
if (!found_eol) {
http_header_line_size += HTTP_HEADER_BLOCK_SIZE;
http_header_line_length += HTTP_HEADER_BLOCK_SIZE-1;
http_header_line = erealloc(http_header_line, http_header_line_size);
if (SOCK_FGETS(http_header_line+http_header_line_length, HTTP_HEADER_BLOCK_SIZE-1, *socketd)==NULL) {
http_header_line[http_header_line_length] = 0;
break;
}
} else {
http_header_line_length = p-http_header_line+1;
}
} while (!found_eol);
if (!strncasecmp(http_header_line, "Location: ", 10)) {
strlcpy(location, http_header_line + 10, sizeof(location));
}
if (http_header_line[0] == '\0') {
body = 1;
}
if (http_header_line_length>0) {
MAKE_STD_ZVAL(http_header);
Z_STRVAL_P(http_header) = http_header_line;
Z_STRLEN_P(http_header) = http_header_line_length;
Z_TYPE_P(http_header) = IS_STRING;
zend_hash_next_index_insert(Z_ARRVAL_P(response_header), &http_header, sizeof(zval *), NULL);
} else {
efree(http_header_line);
}
}
}
if (!reqok) {
SOCK_FCLOSE(*socketd);
*socketd = 0;
if (location[0] != '\0') {
zval **response_header_new, *entry, **entryp;
char new_path[512];
*new_path='\0';
if (strlen(location)<8 || strncasecmp(location, "http://", 7)) {
strcpy(new_path, "http://");
strlcat(new_path, resource->host, sizeof(new_path));
if (resource->port != 80) {
snprintf(new_path+strlen(new_path), sizeof(new_path)-strlen(new_path)-1, ":%d", resource->port);
}
if (*location != '/') {
php_dirname(resource->path, strlen(resource->path));
snprintf (new_path+strlen(new_path), sizeof(new_path)-strlen(new_path)-1, "%s/", resource->path);
}
strlcat(new_path, location, sizeof(new_path));
}
else {
strlcpy(new_path, location, sizeof(new_path));
}
php_url_free(resource);
fp = php_fopen_url_wrap_http(new_path, mode, options, issock, socketd, opened_path TSRMLS_CC);
if (zend_hash_find(EG(active_symbol_table), "http_response_header", sizeof("http_response_header"), (void **) &response_header_new) == SUCCESS) {
entryp = &entry;
MAKE_STD_ZVAL(entry);
ZVAL_EMPTY_STRING(entry);
zend_hash_next_index_insert(Z_ARRVAL_P(response_header), entryp, sizeof(zval *), NULL);
zend_hash_internal_pointer_reset(Z_ARRVAL_PP(response_header_new));
while (zend_hash_get_current_data(Z_ARRVAL_PP(response_header_new), (void **)&entryp) == SUCCESS) {
zval_add_ref(entryp);
zend_hash_next_index_insert(Z_ARRVAL_P(response_header), entryp, sizeof(zval *), NULL);
zend_hash_move_forward(Z_ARRVAL_PP(response_header_new));
}
}
goto out;
} else {
php_url_free(resource);
fp = NULL;
goto out;
}
}
php_url_free(resource);
*issock = 1;
out:
{
ZEND_SET_SYMBOL(EG(active_symbol_table), "http_response_header", response_header);
}
return (fp);
}
/* }}} */
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: sw=4 ts=4 fdm=marker
* vim<600: sw=4 ts=4
*/