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php5  5.3.10
Defines | Functions | Variables
http_fopen_wrapper.c File Reference
#include "php.h"
#include "php_globals.h"
#include "php_streams.h"
#include "php_network.h"
#include "php_ini.h"
#include "ext/standard/basic_functions.h"
#include "ext/standard/php_smart_str.h"
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/param.h>
#include "php_standard.h"
#include <netinet/in.h>
#include <netdb.h>
#include "php_fopen_wrappers.h"

Go to the source code of this file.

Defines

#define HTTP_HEADER_BLOCK_SIZE   1024
#define PHP_URL_REDIRECT_MAX   20
#define HTTP_HEADER_USER_AGENT   1
#define HTTP_HEADER_HOST   2
#define HTTP_HEADER_AUTH   4
#define HTTP_HEADER_FROM   8
#define HTTP_HEADER_CONTENT_LENGTH   16
#define HTTP_HEADER_TYPE   32
#define HTTP_WRAPPER_HEADER_INIT   1
#define HTTP_WRAPPER_REDIRECTED   2
#define _UA_HEADER   "User-Agent: %s\r\n"
#define CHECK_FOR_CNTRL_CHARS(val)

Functions

php_stream * php_stream_url_wrap_http_ex (php_stream_wrapper *wrapper, char *path, char *mode, int options, char **opened_path, php_stream_context *context, int redirect_max, int flags STREAMS_DC TSRMLS_DC)
php_stream * php_stream_url_wrap_http (php_stream_wrapper *wrapper, char *path, char *mode, int options, char **opened_path, php_stream_context *context STREAMS_DC TSRMLS_DC)
static int php_stream_http_stream_stat (php_stream_wrapper *wrapper, php_stream *stream, php_stream_statbuf *ssb TSRMLS_DC)

Variables

static php_stream_wrapper_ops http_stream_wops
PHPAPI php_stream_wrapper php_stream_http_wrapper

Define Documentation

#define _UA_HEADER   "User-Agent: %s\r\n"
#define CHECK_FOR_CNTRL_CHARS (   val)
Value:
{ \
       if (val) { \
              unsigned char *s, *e; \
              int l; \
              l = php_url_decode(val, strlen(val)); \
              s = (unsigned char*)val; e = s + l; \
              while (s < e) { \
                     if (iscntrl(*s)) { \
                            php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "Invalid redirect URL! %s", new_path); \
                            goto out; \
                     } \
                     s++; \
              } \
       } \
}
#define HTTP_HEADER_AUTH   4

Definition at line 79 of file http_fopen_wrapper.c.

#define HTTP_HEADER_BLOCK_SIZE   1024

Definition at line 75 of file http_fopen_wrapper.c.

#define HTTP_HEADER_CONTENT_LENGTH   16

Definition at line 81 of file http_fopen_wrapper.c.

#define HTTP_HEADER_FROM   8

Definition at line 80 of file http_fopen_wrapper.c.

#define HTTP_HEADER_HOST   2

Definition at line 78 of file http_fopen_wrapper.c.

#define HTTP_HEADER_TYPE   32

Definition at line 82 of file http_fopen_wrapper.c.

#define HTTP_HEADER_USER_AGENT   1

Definition at line 77 of file http_fopen_wrapper.c.

#define HTTP_WRAPPER_HEADER_INIT   1

Definition at line 84 of file http_fopen_wrapper.c.

#define HTTP_WRAPPER_REDIRECTED   2

Definition at line 85 of file http_fopen_wrapper.c.

#define PHP_URL_REDIRECT_MAX   20

Definition at line 76 of file http_fopen_wrapper.c.


Function Documentation

static int php_stream_http_stream_stat ( php_stream_wrapper *  wrapper,
php_stream *  stream,
php_stream_statbuf *ssb  TSRMLS_DC 
) [static]

Definition at line 928 of file http_fopen_wrapper.c.

{
       /* one day, we could fill in the details based on Date: and Content-Length:
        * headers.  For now, we return with a failure code to prevent the underlying
        * file's details from being used instead. */
       return -1;
}
php_stream* php_stream_url_wrap_http ( php_stream_wrapper *  wrapper,
char *  path,
char *  mode,
int  options,
char **  opened_path,
php_stream_context *context STREAMS_DC  TSRMLS_DC 
)

Definition at line 922 of file http_fopen_wrapper.c.

Here is the call graph for this function:

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php_stream* php_stream_url_wrap_http_ex ( php_stream_wrapper *  wrapper,
char *  path,
char *  mode,
int  options,
char **  opened_path,
php_stream_context *  context,
int  redirect_max,
int flags STREAMS_DC  TSRMLS_DC 
)

Definition at line 87 of file http_fopen_wrapper.c.

{
       php_stream *stream = NULL;
       php_url *resource = NULL;
       int use_ssl;
       int use_proxy = 0;
       char *scratch = NULL;
       char *tmp = NULL;
       char *ua_str = NULL;
       zval **ua_zval = NULL, **tmpzval = NULL;
       int scratch_len = 0;
       int body = 0;
       char location[HTTP_HEADER_BLOCK_SIZE];
       zval *response_header = NULL;
       int reqok = 0;
       char *http_header_line = NULL;
       char tmp_line[128];
       size_t chunk_size = 0, file_size = 0;
       int eol_detect = 0;
       char *transport_string, *errstr = NULL;
       int transport_len, have_header = 0, request_fulluri = 0, ignore_errors = 0;
       char *protocol_version = NULL;
       int protocol_version_len = 3; /* Default: "1.0" */
       struct timeval timeout;
       char *user_headers = NULL;
       int header_init = ((flags & HTTP_WRAPPER_HEADER_INIT) != 0);
       int redirected = ((flags & HTTP_WRAPPER_REDIRECTED) != 0);
       int follow_location = 1;
       php_stream_filter *transfer_encoding = NULL;

       tmp_line[0] = '\0';

       if (redirect_max < 1) {
              php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "Redirection limit reached, aborting");
              return NULL;
       }

       resource = php_url_parse(path);
       if (resource == NULL) {
              return NULL;
       }

       if (strncasecmp(resource->scheme, "http", sizeof("http")) && strncasecmp(resource->scheme, "https", sizeof("https"))) {
              if (!context || 
                     php_stream_context_get_option(context, wrapper->wops->label, "proxy", &tmpzval) == FAILURE ||
                     Z_TYPE_PP(tmpzval) != IS_STRING ||
                     Z_STRLEN_PP(tmpzval) <= 0) {
                     php_url_free(resource);
                     return php_stream_open_wrapper_ex(path, mode, ENFORCE_SAFE_MODE | REPORT_ERRORS, NULL, context);
              }
              /* Called from a non-http wrapper with http proxying requested (i.e. ftp) */
              request_fulluri = 1;
              use_ssl = 0;
              use_proxy = 1;

              transport_len = Z_STRLEN_PP(tmpzval);
              transport_string = estrndup(Z_STRVAL_PP(tmpzval), Z_STRLEN_PP(tmpzval));
       } else {
              /* Normal http request (possibly with proxy) */
       
              if (strpbrk(mode, "awx+")) {
                     php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "HTTP wrapper does not support writeable connections");
                     php_url_free(resource);
                     return NULL;
              }

              use_ssl = resource->scheme && (strlen(resource->scheme) > 4) && resource->scheme[4] == 's';
              /* choose default ports */
              if (use_ssl && resource->port == 0)
                     resource->port = 443;
              else if (resource->port == 0)
                     resource->port = 80;

              if (context &&
                     php_stream_context_get_option(context, wrapper->wops->label, "proxy", &tmpzval) == SUCCESS &&
                     Z_TYPE_PP(tmpzval) == IS_STRING &&
                     Z_STRLEN_PP(tmpzval) > 0) {
                     use_proxy = 1;
                     transport_len = Z_STRLEN_PP(tmpzval);
                     transport_string = estrndup(Z_STRVAL_PP(tmpzval), Z_STRLEN_PP(tmpzval));
              } else {
                     transport_len = spprintf(&transport_string, 0, "%s://%s:%d", use_ssl ? "ssl" : "tcp", resource->host, resource->port);
              }
       }

       if (context && php_stream_context_get_option(context, wrapper->wops->label, "timeout", &tmpzval) == SUCCESS) {
              SEPARATE_ZVAL(tmpzval);
              convert_to_double_ex(tmpzval);
              timeout.tv_sec = (time_t) Z_DVAL_PP(tmpzval);
              timeout.tv_usec = (size_t) ((Z_DVAL_PP(tmpzval) - timeout.tv_sec) * 1000000);
       } else {
              timeout.tv_sec = FG(default_socket_timeout);
              timeout.tv_usec = 0;
       }

       stream = php_stream_xport_create(transport_string, transport_len, options,
                     STREAM_XPORT_CLIENT | STREAM_XPORT_CONNECT,
                     NULL, &timeout, context, &errstr, NULL);
    
       if (stream) {
              php_stream_set_option(stream, PHP_STREAM_OPTION_READ_TIMEOUT, 0, &timeout);
       }
                     
       if (errstr) {
              php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "%s", errstr);
              efree(errstr);
              errstr = NULL;
       }

       efree(transport_string);

       if (stream && use_proxy && use_ssl) {
              smart_str header = {0};

              smart_str_appendl(&header, "CONNECT ", sizeof("CONNECT ")-1);
              smart_str_appends(&header, resource->host);
              smart_str_appendc(&header, ':');
              smart_str_append_unsigned(&header, resource->port);
              smart_str_appendl(&header, " HTTP/1.0\r\n", sizeof(" HTTP/1.0\r\n")-1);

           /* check if we have Proxy-Authorization header */
              if (context && php_stream_context_get_option(context, "http", "header", &tmpzval) == SUCCESS) {
                     char *s, *p;

                     if (Z_TYPE_PP(tmpzval) == IS_ARRAY) {
                            HashPosition pos;
                            zval **tmpheader = NULL;

                            for (zend_hash_internal_pointer_reset_ex(Z_ARRVAL_PP(tmpzval), &pos);
                                   SUCCESS == zend_hash_get_current_data_ex(Z_ARRVAL_PP(tmpzval), (void *)&tmpheader, &pos);
                                   zend_hash_move_forward_ex(Z_ARRVAL_PP(tmpzval), &pos)) {
                                   if (Z_TYPE_PP(tmpheader) == IS_STRING) {
                                          s = Z_STRVAL_PP(tmpheader);
                                          do {
                                                 while (*s == ' ' || *s == '\t') s++;
                                                 p = s;
                                                 while (*p != 0 && *p != ':' && *p != '\r' && *p !='\n') p++;
                                                 if (*p == ':') {
                                                        p++;
                                                        if (p - s == sizeof("Proxy-Authorization:") - 1 &&
                                                            zend_binary_strcasecmp(s, sizeof("Proxy-Authorization:") - 1,
                                                                "Proxy-Authorization:", sizeof("Proxy-Authorization:") - 1) == 0) {
                                                               while (*p != 0 && *p != '\r' && *p !='\n') p++;
                                                               smart_str_appendl(&header, s, p - s);
                                                               smart_str_appendl(&header, "\r\n", sizeof("\r\n")-1);
                                                               goto finish;
                                                        } else {
                                                               while (*p != 0 && *p != '\r' && *p !='\n') p++;
                                                        }
                                                 }
                                                 s = p;
                                                 while (*s == '\r' || *s == '\n') s++;
                                          } while (*s != 0);
                                   }
                            }
                     } else if (Z_TYPE_PP(tmpzval) == IS_STRING && Z_STRLEN_PP(tmpzval)) {
                            s = Z_STRVAL_PP(tmpzval);
                            do {
                                   while (*s == ' ' || *s == '\t') s++;
                                   p = s;
                                   while (*p != 0 && *p != ':' && *p != '\r' && *p !='\n') p++;
                                   if (*p == ':') {
                                          p++;
                                          if (p - s == sizeof("Proxy-Authorization:") - 1 &&
                                              zend_binary_strcasecmp(s, sizeof("Proxy-Authorization:") - 1,
                                                  "Proxy-Authorization:", sizeof("Proxy-Authorization:") - 1) == 0) {
                                                 while (*p != 0 && *p != '\r' && *p !='\n') p++;
                                                 smart_str_appendl(&header, s, p - s);
                                                 smart_str_appendl(&header, "\r\n", sizeof("\r\n")-1);
                                                 goto finish;
                                          } else {
                                                 while (*p != 0 && *p != '\r' && *p !='\n') p++;
                                          }
                                   }
                                   s = p;
                                   while (*s == '\r' || *s == '\n') s++;
                            } while (*s != 0);
                     }
              }
finish:
              smart_str_appendl(&header, "\r\n", sizeof("\r\n")-1);

              if (php_stream_write(stream, header.c, header.len) != header.len) {
                     php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "Cannot connect to HTTPS server through proxy");
                     php_stream_close(stream);
                     stream = NULL;
              }
              smart_str_free(&header);

              if (stream) {
                     char header_line[HTTP_HEADER_BLOCK_SIZE];

                     /* get response header */
                     while (php_stream_gets(stream, header_line, HTTP_HEADER_BLOCK_SIZE-1) != NULL) {
                            if (header_line[0] == '\n' ||
                                header_line[0] == '\r' ||
                                header_line[0] == '\0') {
                              break;
                            }
                     }
              }

              /* enable SSL transport layer */
              if (stream) {
                     if (php_stream_xport_crypto_setup(stream, STREAM_CRYPTO_METHOD_SSLv23_CLIENT, NULL TSRMLS_CC) < 0 ||
                         php_stream_xport_crypto_enable(stream, 1 TSRMLS_CC) < 0) {
                            php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "Cannot connect to HTTPS server through proxy");
                            php_stream_close(stream);
                            stream = NULL;
                     }
              }
       }

       if (stream == NULL)
              goto out;

       /* avoid buffering issues while reading header */
       if (options & STREAM_WILL_CAST)
              chunk_size = php_stream_set_chunk_size(stream, 1);
       
       /* avoid problems with auto-detecting when reading the headers -> the headers
        * are always in canonical \r\n format */
       eol_detect = stream->flags & (PHP_STREAM_FLAG_DETECT_EOL | PHP_STREAM_FLAG_EOL_MAC);
       stream->flags &= ~(PHP_STREAM_FLAG_DETECT_EOL | PHP_STREAM_FLAG_EOL_MAC);

       php_stream_context_set(stream, context);

       php_stream_notify_info(context, PHP_STREAM_NOTIFY_CONNECT, NULL, 0);

       if (header_init && context && php_stream_context_get_option(context, "http", "max_redirects", &tmpzval) == SUCCESS) {
              SEPARATE_ZVAL(tmpzval);
              convert_to_long_ex(tmpzval);
              redirect_max = Z_LVAL_PP(tmpzval);
       }

       if (context && php_stream_context_get_option(context, "http", "method", &tmpzval) == SUCCESS) {
              if (Z_TYPE_PP(tmpzval) == IS_STRING && Z_STRLEN_PP(tmpzval) > 0) {
                     /* As per the RFC, automatically redirected requests MUST NOT use other methods than
                      * GET and HEAD unless it can be confirmed by the user */
                     if (!redirected
                            || (Z_STRLEN_PP(tmpzval) == 3 && memcmp("GET", Z_STRVAL_PP(tmpzval), 3) == 0)
                            || (Z_STRLEN_PP(tmpzval) == 4 && memcmp("HEAD",Z_STRVAL_PP(tmpzval), 4) == 0)
                     ) {
                            scratch_len = strlen(path) + 29 + Z_STRLEN_PP(tmpzval);
                            scratch = emalloc(scratch_len);
                            strlcpy(scratch, Z_STRVAL_PP(tmpzval), Z_STRLEN_PP(tmpzval) + 1);
                            strncat(scratch, " ", 1);
                     }
              }
       }
 
       if (context && php_stream_context_get_option(context, "http", "protocol_version", &tmpzval) == SUCCESS) {
              SEPARATE_ZVAL(tmpzval);
              convert_to_double_ex(tmpzval);
              protocol_version_len = spprintf(&protocol_version, 0, "%.1F", Z_DVAL_PP(tmpzval));
       }

       if (!scratch) {
              scratch_len = strlen(path) + 29 + protocol_version_len;
              scratch = emalloc(scratch_len);
              strncpy(scratch, "GET ", scratch_len);
       }

       /* Should we send the entire path in the request line, default to no. */
       if (!request_fulluri &&
              context &&
              php_stream_context_get_option(context, "http", "request_fulluri", &tmpzval) == SUCCESS) {
              zval ztmp = **tmpzval;

              zval_copy_ctor(&ztmp);
              convert_to_boolean(&ztmp);
              request_fulluri = Z_BVAL(ztmp) ? 1 : 0;
              zval_dtor(&ztmp);
       }

       if (request_fulluri) {
              /* Ask for everything */
              strcat(scratch, path);
       } else {
              /* Send the traditional /path/to/file?query_string */

              /* file */
              if (resource->path && *resource->path) {
                     strlcat(scratch, resource->path, scratch_len);
              } else {
                     strlcat(scratch, "/", scratch_len);
              }

              /* query string */
              if (resource->query) {
                     strlcat(scratch, "?", scratch_len);
                     strlcat(scratch, resource->query, scratch_len);
              }
       }

       /* protocol version we are speaking */
       if (protocol_version) {
              strlcat(scratch, " HTTP/", scratch_len);
              strlcat(scratch, protocol_version, scratch_len);
              strlcat(scratch, "\r\n", scratch_len);
              efree(protocol_version);
              protocol_version = NULL;
       } else {
              strlcat(scratch, " HTTP/1.0\r\n", scratch_len);
       }

       /* send it */
       php_stream_write(stream, scratch, strlen(scratch));

       if (context && php_stream_context_get_option(context, "http", "header", &tmpzval) == SUCCESS) {
              tmp = NULL;
              
              if (Z_TYPE_PP(tmpzval) == IS_ARRAY) {
                     HashPosition pos;
                     zval **tmpheader = NULL;
                     smart_str tmpstr = {0};

                     for (zend_hash_internal_pointer_reset_ex(Z_ARRVAL_PP(tmpzval), &pos);
                            SUCCESS == zend_hash_get_current_data_ex(Z_ARRVAL_PP(tmpzval), (void *)&tmpheader, &pos);
                            zend_hash_move_forward_ex(Z_ARRVAL_PP(tmpzval), &pos)
                     ) {
                            if (Z_TYPE_PP(tmpheader) == IS_STRING) {
                                   smart_str_appendl(&tmpstr, Z_STRVAL_PP(tmpheader), Z_STRLEN_PP(tmpheader));
                                   smart_str_appendl(&tmpstr, "\r\n", sizeof("\r\n") - 1);
                            }
                     }
                     smart_str_0(&tmpstr);
                     /* Remove newlines and spaces from start and end. there's at least one extra \r\n at the end that needs to go. */
                     if (tmpstr.c) {
                            tmp = php_trim(tmpstr.c, strlen(tmpstr.c), NULL, 0, NULL, 3 TSRMLS_CC);
                            smart_str_free(&tmpstr);
                     }
              }
              if (Z_TYPE_PP(tmpzval) == IS_STRING && Z_STRLEN_PP(tmpzval)) {
                     /* Remove newlines and spaces from start and end php_trim will estrndup() */
                     tmp = php_trim(Z_STRVAL_PP(tmpzval), Z_STRLEN_PP(tmpzval), NULL, 0, NULL, 3 TSRMLS_CC);
              }
              if (tmp && strlen(tmp) > 0) {
                     char *s;

                     if (!header_init) { /* Remove post headers for redirects */
                            int l = strlen(tmp);
                            char *s2, *tmp_c = estrdup(tmp);
                            
                            php_strtolower(tmp_c, l);
                            if ((s = strstr(tmp_c, "content-length:"))) {
                                   if ((s2 = memchr(s, '\n', tmp_c + l - s))) {
                                          int b = tmp_c + l - 1 - s2;
                                          memmove(tmp, tmp + (s2 + 1 - tmp_c), b);
                                          memmove(tmp_c, s2 + 1, b);
                                          
                                   } else {
                                          tmp[s - tmp_c] = *s = '\0';
                                   }
                                   l = strlen(tmp_c);
                            }
                            if ((s = strstr(tmp_c, "content-type:"))) {
                                   if ((s2 = memchr(s, '\n', tmp_c + l - s))) {
                                          memmove(tmp, tmp + (s2 + 1 - tmp_c), tmp_c + l - 1 - s2);
                                   } else {
                                          tmp[s - tmp_c] = '\0';
                                   }
                            }

                            efree(tmp_c);
                            tmp_c = php_trim(tmp, strlen(tmp), NULL, 0, NULL, 3 TSRMLS_CC);
                            efree(tmp);
                            tmp = tmp_c;
                     }

                     user_headers = estrdup(tmp);

                     /* Make lowercase for easy comparison against 'standard' headers */
                     php_strtolower(tmp, strlen(tmp));
                     if ((s = strstr(tmp, "user-agent:")) && 
                         (s == tmp || *(s-1) == '\r' || *(s-1) == '\n' || 
                                      *(s-1) == '\t' || *(s-1) == ' ')) {
                             have_header |= HTTP_HEADER_USER_AGENT;
                     }
                     if ((s = strstr(tmp, "host:")) &&
                         (s == tmp || *(s-1) == '\r' || *(s-1) == '\n' || 
                                      *(s-1) == '\t' || *(s-1) == ' ')) {
                             have_header |= HTTP_HEADER_HOST;
                     }
                     if ((s = strstr(tmp, "from:")) &&
                         (s == tmp || *(s-1) == '\r' || *(s-1) == '\n' || 
                                      *(s-1) == '\t' || *(s-1) == ' ')) {
                             have_header |= HTTP_HEADER_FROM;
                            }
                     if ((s = strstr(tmp, "authorization:")) &&
                         (s == tmp || *(s-1) == '\r' || *(s-1) == '\n' || 
                                      *(s-1) == '\t' || *(s-1) == ' ')) {
                             have_header |= HTTP_HEADER_AUTH;
                     }
                     if ((s = strstr(tmp, "content-length:")) &&
                         (s == tmp || *(s-1) == '\r' || *(s-1) == '\n' || 
                                      *(s-1) == '\t' || *(s-1) == ' ')) {
                             have_header |= HTTP_HEADER_CONTENT_LENGTH;
                     }
                     if ((s = strstr(tmp, "content-type:")) &&
                         (s == tmp || *(s-1) == '\r' || *(s-1) == '\n' || 
                                      *(s-1) == '\t' || *(s-1) == ' ')) {
                             have_header |= HTTP_HEADER_TYPE;
                     }
                     /* remove Proxy-Authorization header */
                     if (use_proxy && use_ssl && (s = strstr(tmp, "proxy-authorization:")) &&
                         (s == tmp || *(s-1) == '\r' || *(s-1) == '\n' || 
                                      *(s-1) == '\t' || *(s-1) == ' ')) {
                            char *p = s + sizeof("proxy-authorization:") - 1;
                            
                            while (s > tmp && (*(s-1) == ' ' || *(s-1) == '\t')) s--;
                            while (*p != 0 && *p != '\r' && *p != '\n') p++;
                            while (*p == '\r' || *p == '\n') p++;
                            if (*p == 0) {
                                   if (s == tmp) {
                                          efree(user_headers);
                                          user_headers = NULL;
                                   } else {
                                          while (s > tmp && (*(s-1) == '\r' || *(s-1) == '\n')) s--;
                                          user_headers[s - tmp] = 0;
                                   }
                            } else {
                                   memmove(user_headers + (s - tmp), user_headers + (p - tmp), strlen(p) + 1);
                            }
                     }

              }
              if (tmp) {
                     efree(tmp);
              }
       }

       /* auth header if it was specified */
       if (((have_header & HTTP_HEADER_AUTH) == 0) && resource->user) {
              /* decode the strings first */
              php_url_decode(resource->user, strlen(resource->user));

              /* scratch is large enough, since it was made large enough for the whole URL */
              strcpy(scratch, resource->user);
              strcat(scratch, ":");

              /* Note: password is optional! */
              if (resource->pass) {
                     php_url_decode(resource->pass, strlen(resource->pass));
                     strcat(scratch, resource->pass);
              }

              tmp = (char*)php_base64_encode((unsigned char*)scratch, strlen(scratch), NULL);
              
              if (snprintf(scratch, scratch_len, "Authorization: Basic %s\r\n", tmp) > 0) {
                     php_stream_write(stream, scratch, strlen(scratch));
                     php_stream_notify_info(context, PHP_STREAM_NOTIFY_AUTH_REQUIRED, NULL, 0);
              }

              efree(tmp);
              tmp = NULL;
       }

       /* if the user has configured who they are, send a From: line */
       {
              char *from_address = php_ini_string("from", sizeof("from"), 0);
              if (((have_header & HTTP_HEADER_FROM) == 0) && from_address && from_address[0] != '\0') {
                     if (snprintf(scratch, scratch_len, "From: %s\r\n", from_address) > 0)
                            php_stream_write(stream, scratch, strlen(scratch));
              }
       }

       /* Send Host: header so name-based virtual hosts work */
       if ((have_header & HTTP_HEADER_HOST) == 0) {
              if ((use_ssl && resource->port != 443 && resource->port != 0) || 
                     (!use_ssl && resource->port != 80 && resource->port != 0)) {
                     if (snprintf(scratch, scratch_len, "Host: %s:%i\r\n", resource->host, resource->port) > 0)
                            php_stream_write(stream, scratch, strlen(scratch));
              } else {
                     if (snprintf(scratch, scratch_len, "Host: %s\r\n", resource->host) > 0) {
                            php_stream_write(stream, scratch, strlen(scratch));
                     }
              }
       }

       if (context && 
           php_stream_context_get_option(context, "http", "user_agent", &ua_zval) == SUCCESS &&
              Z_TYPE_PP(ua_zval) == IS_STRING) {
              ua_str = Z_STRVAL_PP(ua_zval);
       } else if (FG(user_agent)) {
              ua_str = FG(user_agent);
       }

       if (((have_header & HTTP_HEADER_USER_AGENT) == 0) && ua_str) {
#define _UA_HEADER "User-Agent: %s\r\n"
              char *ua;
              size_t ua_len;
              
              ua_len = sizeof(_UA_HEADER) + strlen(ua_str);
              
              /* ensure the header is only sent if user_agent is not blank */
              if (ua_len > sizeof(_UA_HEADER)) {
                     ua = emalloc(ua_len + 1);
                     if ((ua_len = slprintf(ua, ua_len, _UA_HEADER, ua_str)) > 0) {
                            ua[ua_len] = 0;
                            php_stream_write(stream, ua, ua_len);
                     } else {
                            php_error_docref(NULL TSRMLS_CC, E_WARNING, "Cannot construct User-agent header");
                     }

                     if (ua) {
                            efree(ua);
                     }
              }      
       }

       if (user_headers) {
              /* A bit weird, but some servers require that Content-Length be sent prior to Content-Type for POST
               * see bug #44603 for details. Since Content-Type maybe part of user's headers we need to do this check first.
               */
              if (
                            header_init &&
                            context &&
                            !(have_header & HTTP_HEADER_CONTENT_LENGTH) &&
                            php_stream_context_get_option(context, "http", "content", &tmpzval) == SUCCESS &&
                            Z_TYPE_PP(tmpzval) == IS_STRING && Z_STRLEN_PP(tmpzval) > 0
              ) {
                     scratch_len = slprintf(scratch, scratch_len, "Content-Length: %d\r\n", Z_STRLEN_PP(tmpzval));
                     php_stream_write(stream, scratch, scratch_len);
                     have_header |= HTTP_HEADER_CONTENT_LENGTH;
              }

              php_stream_write(stream, user_headers, strlen(user_headers));
              php_stream_write(stream, "\r\n", sizeof("\r\n")-1);
              efree(user_headers);
       }

       /* Request content, such as for POST requests */
       if (header_init && context &&
              php_stream_context_get_option(context, "http", "content", &tmpzval) == SUCCESS &&
              Z_TYPE_PP(tmpzval) == IS_STRING && Z_STRLEN_PP(tmpzval) > 0) {
              if (!(have_header & HTTP_HEADER_CONTENT_LENGTH)) {
                     scratch_len = slprintf(scratch, scratch_len, "Content-Length: %d\r\n", Z_STRLEN_PP(tmpzval));
                     php_stream_write(stream, scratch, scratch_len);
              }
              if (!(have_header & HTTP_HEADER_TYPE)) {
                     php_stream_write(stream, "Content-Type: application/x-www-form-urlencoded\r\n",
                            sizeof("Content-Type: application/x-www-form-urlencoded\r\n") - 1);
                     php_error_docref(NULL TSRMLS_CC, E_NOTICE, "Content-type not specified assuming application/x-www-form-urlencoded");
              }
              php_stream_write(stream, "\r\n", sizeof("\r\n")-1);
              php_stream_write(stream, Z_STRVAL_PP(tmpzval), Z_STRLEN_PP(tmpzval));
       } else {
              php_stream_write(stream, "\r\n", sizeof("\r\n")-1);
       }

       location[0] = '\0';

       if (!EG(active_symbol_table)) {
              zend_rebuild_symbol_table(TSRMLS_C);
       }

       if (header_init) {
              zval *ztmp;
              MAKE_STD_ZVAL(ztmp);
              array_init(ztmp);
              ZEND_SET_SYMBOL(EG(active_symbol_table), "http_response_header", ztmp);
       }

       {
              zval **rh;
              zend_hash_find(EG(active_symbol_table), "http_response_header", sizeof("http_response_header"), (void **) &rh);
              response_header = *rh;
       }

       if (!php_stream_eof(stream)) {
              size_t tmp_line_len;
              /* get response header */

              if (php_stream_get_line(stream, tmp_line, sizeof(tmp_line) - 1, &tmp_line_len) != NULL) {
                     zval *http_response;
                     int response_code;

                     if (tmp_line_len > 9) {
                            response_code = atoi(tmp_line + 9);
                     } else {
                            response_code = 0;
                     }
                     if (context && SUCCESS==php_stream_context_get_option(context, "http", "ignore_errors", &tmpzval)) {
                            ignore_errors = zend_is_true(*tmpzval);
                     }
                     /* when we request only the header, don't fail even on error codes */
                     if ((options & STREAM_ONLY_GET_HEADERS) || ignore_errors) {
                            reqok = 1;
                     }
                     /* all status codes in the 2xx range are defined by the specification as successful;
                      * all status codes in the 3xx range are for redirection, and so also should never
                      * fail */
                     if (response_code >= 200 && response_code < 400) {
                            reqok = 1;
                     } else {
                            switch(response_code) {
                                   case 403:
                                          php_stream_notify_error(context, PHP_STREAM_NOTIFY_AUTH_RESULT,
                                                        tmp_line, response_code);
                                          break;
                                   default:
                                          /* safety net in the event tmp_line == NULL */
                                          if (!tmp_line_len) {
                                                 tmp_line[0] = '\0';
                                          }
                                          php_stream_notify_error(context, PHP_STREAM_NOTIFY_FAILURE,
                                                        tmp_line, response_code);
                            }
                     }
                     if (tmp_line[tmp_line_len - 1] == '\n') {
                            --tmp_line_len;
                            if (tmp_line[tmp_line_len - 1] == '\r') {
                                   --tmp_line_len;
                            }
                     }
                     MAKE_STD_ZVAL(http_response);
                     ZVAL_STRINGL(http_response, tmp_line, tmp_line_len, 1);
                     zend_hash_next_index_insert(Z_ARRVAL_P(response_header), &http_response, sizeof(zval *), NULL);
              }
       } else {
              php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "HTTP request failed, unexpected end of socket!");
              goto out;
       }
       
       /* read past HTTP headers */
       
       http_header_line = emalloc(HTTP_HEADER_BLOCK_SIZE);

       while (!body && !php_stream_eof(stream)) {
              size_t http_header_line_length;
              if (php_stream_get_line(stream, http_header_line, HTTP_HEADER_BLOCK_SIZE, &http_header_line_length) && *http_header_line != '\n' && *http_header_line != '\r') {
                     char *e = http_header_line + http_header_line_length - 1;
                     if (*e != '\n') {
                            do { /* partial header */
                                   if (php_stream_get_line(stream, http_header_line, HTTP_HEADER_BLOCK_SIZE, &http_header_line_length) == NULL) {
                                          php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "Failed to read HTTP headers");
                                          goto out;
                                   }
                                   e = http_header_line + http_header_line_length - 1;
                            } while (*e != '\n');
                            continue;
                     }
                     while (*e == '\n' || *e == '\r') {
                            e--;
                     }
                     http_header_line_length = e - http_header_line + 1;
                     http_header_line[http_header_line_length] = '\0';

                     if (!strncasecmp(http_header_line, "Location: ", 10)) {
                            if (context && php_stream_context_get_option(context, "http", "follow_location", &tmpzval) == SUCCESS) {
                                   SEPARATE_ZVAL(tmpzval);
                                   convert_to_long_ex(tmpzval);
                                   follow_location = Z_LVAL_PP(tmpzval);
                            }
                            strlcpy(location, http_header_line + 10, sizeof(location));
                     } else if (!strncasecmp(http_header_line, "Content-Type: ", 14)) {
                            php_stream_notify_info(context, PHP_STREAM_NOTIFY_MIME_TYPE_IS, http_header_line + 14, 0);
                     } else if (!strncasecmp(http_header_line, "Content-Length: ", 16)) {
                            file_size = atoi(http_header_line + 16);
                            php_stream_notify_file_size(context, file_size, http_header_line, 0);
                     } else if (!strncasecmp(http_header_line, "Transfer-Encoding: chunked", sizeof("Transfer-Encoding: chunked"))) {

                            /* create filter to decode response body */
                            if (!(options & STREAM_ONLY_GET_HEADERS)) {
                                   long decode = 1;

                                   if (context && php_stream_context_get_option(context, "http", "auto_decode", &tmpzval) == SUCCESS) {
                                          SEPARATE_ZVAL(tmpzval);
                                          convert_to_boolean(*tmpzval);
                                          decode = Z_LVAL_PP(tmpzval);
                                   }
                                   if (decode) {
                                          transfer_encoding = php_stream_filter_create("dechunk", NULL, php_stream_is_persistent(stream) TSRMLS_CC);
                                          if (transfer_encoding) {
                                                 /* don't store transfer-encodeing header */
                                                 continue;
                                          }
                                   }
                            }
                     }

                     if (http_header_line[0] == '\0') {
                            body = 1;
                     } else {
                            zval *http_header;

                            MAKE_STD_ZVAL(http_header);

                            ZVAL_STRINGL(http_header, http_header_line, http_header_line_length, 1);
                            
                            zend_hash_next_index_insert(Z_ARRVAL_P(response_header), &http_header, sizeof(zval *), NULL);
                     }
              } else {
                     break;
              }
       }

       if (!reqok || (location[0] != '\0' && follow_location)) {
              if (!follow_location || (((options & STREAM_ONLY_GET_HEADERS) || ignore_errors) && redirect_max <= 1)) {
                     goto out;
              }

              if (location[0] != '\0')
                     php_stream_notify_info(context, PHP_STREAM_NOTIFY_REDIRECTED, location, 0);

              php_stream_close(stream);
              stream = NULL;

              if (location[0] != '\0') {

                     char new_path[HTTP_HEADER_BLOCK_SIZE];
                     char loc_path[HTTP_HEADER_BLOCK_SIZE];

                     *new_path='\0';
                     if (strlen(location)<8 || (strncasecmp(location, "http://", sizeof("http://")-1) && 
                                                 strncasecmp(location, "https://", sizeof("https://")-1) && 
                                                 strncasecmp(location, "ftp://", sizeof("ftp://")-1) && 
                                                 strncasecmp(location, "ftps://", sizeof("ftps://")-1))) 
                     {
                            if (*location != '/') {
                                   if (*(location+1) != '\0' && resource->path) {
                                          char *s = strrchr(resource->path, '/');
                                          if (!s) {
                                                 s = resource->path;
                                                 if (!s[0]) {
                                                        efree(s);
                                                        s = resource->path = estrdup("/");
                                                 } else {
                                                        *s = '/';
                                                 }
                                          }
                                          s[1] = '\0'; 
                                          if (resource->path && *(resource->path) == '/' && *(resource->path + 1) == '\0') {
                                                 snprintf(loc_path, sizeof(loc_path) - 1, "%s%s", resource->path, location);
                                          } else {
                                                 snprintf(loc_path, sizeof(loc_path) - 1, "%s/%s", resource->path, location);
                                          }
                                   } else {
                                          snprintf(loc_path, sizeof(loc_path) - 1, "/%s", location);
                                   }
                            } else {
                                   strlcpy(loc_path, location, sizeof(loc_path));
                            }
                            if ((use_ssl && resource->port != 443) || (!use_ssl && resource->port != 80)) {
                                   snprintf(new_path, sizeof(new_path) - 1, "%s://%s:%d%s", resource->scheme, resource->host, resource->port, loc_path);
                            } else {
                                   snprintf(new_path, sizeof(new_path) - 1, "%s://%s%s", resource->scheme, resource->host, loc_path);
                            }
                     } else {
                            strlcpy(new_path, location, sizeof(new_path));
                     }

                     php_url_free(resource);
                     /* check for invalid redirection URLs */
                     if ((resource = php_url_parse(new_path)) == NULL) {
                            php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "Invalid redirect URL! %s", new_path);
                            goto out;
                     }

#define CHECK_FOR_CNTRL_CHARS(val) { \
       if (val) { \
              unsigned char *s, *e; \
              int l; \
              l = php_url_decode(val, strlen(val)); \
              s = (unsigned char*)val; e = s + l; \
              while (s < e) { \
                     if (iscntrl(*s)) { \
                            php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "Invalid redirect URL! %s", new_path); \
                            goto out; \
                     } \
                     s++; \
              } \
       } \
}
                     /* check for control characters in login, password & path */
                     if (strncasecmp(new_path, "http://", sizeof("http://") - 1) || strncasecmp(new_path, "https://", sizeof("https://") - 1)) {
                            CHECK_FOR_CNTRL_CHARS(resource->user)
                            CHECK_FOR_CNTRL_CHARS(resource->pass)
                            CHECK_FOR_CNTRL_CHARS(resource->path)
                     }
                     stream = php_stream_url_wrap_http_ex(wrapper, new_path, mode, options, opened_path, context, --redirect_max, HTTP_WRAPPER_REDIRECTED STREAMS_CC TSRMLS_CC);
              } else {
                     php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "HTTP request failed! %s", tmp_line);
              }
       }
out:
       if (protocol_version) {
              efree(protocol_version);
       }

       if (http_header_line) {
              efree(http_header_line);
       }

       if (scratch) {
              efree(scratch);
       }

       if (resource) {
              php_url_free(resource);
       }

       if (stream) {
              if (header_init) {
                     zval_add_ref(&response_header);
                     stream->wrapperdata = response_header;
              }
              php_stream_notify_progress_init(context, 0, file_size);
              
              /* Restore original chunk size now that we're done with headers */
              if (options & STREAM_WILL_CAST)
                     php_stream_set_chunk_size(stream, chunk_size);

              /* restore the users auto-detect-line-endings setting */
              stream->flags |= eol_detect;
              
              /* as far as streams are concerned, we are now at the start of
               * the stream */
              stream->position = 0;

              /* restore mode */
              strlcpy(stream->mode, mode, sizeof(stream->mode));

              if (transfer_encoding) {
                     php_stream_filter_append(&stream->readfilters, transfer_encoding);
              }
       } else if (transfer_encoding) {
              php_stream_filter_free(transfer_encoding TSRMLS_CC);
       }

       return stream;
}

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Variable Documentation

Initial value:

Definition at line 937 of file http_fopen_wrapper.c.

PHPAPI php_stream_wrapper php_stream_http_wrapper
Initial value:

Definition at line 950 of file http_fopen_wrapper.c.