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 header_init STREAMS_DC TSRMLS_DC)
{
php_stream *stream = NULL;
php_url *resource = NULL;
int use_ssl;
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, have_header = 0;
if (redirect_max < 1) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "Circular redirect, aborting.");
return NULL;
}
if (strpbrk(mode, "aw+")) {
php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "HTTP wrapper does not support writeable connections.");
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"))) {
php_url_free(resource);
return php_stream_open_wrapper_ex(path, mode, ENFORCE_SAFE_MODE | REPORT_ERRORS, NULL, context);
}
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;
stream = php_stream_sock_open_host(resource->host, resource->port, SOCK_STREAM, NULL, 0);
if (stream == NULL) {
eol_detect = 0;
goto out;
}
/* 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);
#ifdef HAVE_OPENSSL_EXT
if (use_ssl) {
if (context) {
/* set the CN we expect to be on the remote cert.
* You still need to have enabled verification (verify_peer) in the context for
* this to have an effect */
zval *cn;
ALLOC_INIT_ZVAL(cn);
ZVAL_STRING(cn, resource->host, 1);
php_stream_context_set_option(context, "ssl", "CN_match", cn);
}
if (php_stream_sock_ssl_activate(stream, 1) == FAILURE) {
php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "Unable to activate SSL mode");
php_stream_close(stream);
stream = NULL;
goto out;
}
}
#endif
if (context && php_stream_context_get_option(context, "http", "method", &tmpzval) == SUCCESS) {
if (Z_TYPE_PP(tmpzval) == IS_STRING && Z_STRLEN_PP(tmpzval) > 0) {
scratch_len = strlen(path) + 29 + Z_STRLEN_PP(tmpzval);
scratch = (char *)emalloc(scratch_len);
strlcpy(scratch, Z_STRVAL_PP(tmpzval), Z_STRLEN_PP(tmpzval) + 1);
strcat(scratch, " ");
}
}
if (!scratch) {
scratch_len = strlen(path) + 32;
scratch = (char *)emalloc(scratch_len);
strcpy(scratch, "GET ");
}
/* 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 */
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 && 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 (strlen(tmp) > 0) {
/* Output trimmed headers with \r\n at the end */
php_stream_write(stream, tmp, strlen(tmp));
php_stream_write(stream, "\r\n", sizeof("\r\n") - 1);
/* Make lowercase for easy comparison against 'standard' headers */
php_strtolower(tmp, strlen(tmp));
if (strstr(tmp, "user-agent:")) {
have_header |= HTTP_HEADER_USER_AGENT;
}
if (strstr(tmp, "host:")) {
have_header |= HTTP_HEADER_HOST;
}
if (strstr(tmp, "from:")) {
have_header |= HTTP_HEADER_FROM;
}
if (strstr(tmp, "authorization:")) {
have_header |= HTTP_HEADER_AUTH;
}
}
efree(tmp);
}
/* auth header if it was specified */
if (((have_header & HTTP_HEADER_AUTH) == 0) && resource->user && resource->pass) {
/* decode the strings first */
php_url_decode(resource->user, strlen(resource->user));
php_url_decode(resource->pass, strlen(resource->pass));
/* scratch is large enough, since it was made large enough for the whole URL */
strcpy(scratch, resource->user);
strcat(scratch, ":");
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 */
if (((have_header & HTTP_HEADER_FROM) == 0) && cfg_get_string("from", &tmp) == SUCCESS) {
if (snprintf(scratch, scratch_len, "From: %s\r\n", tmp) > 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) || (!use_ssl && resource->port != 80)) {
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) {
ua_str = Z_STRVAL_PP(ua_zval);
} else if (FG(user_agent)) {
ua_str = FG(user_agent);
}
if (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 = (char *)emalloc(ua_len + 1);
if ((ua_len = snprintf(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);
}
}
}
php_stream_write(stream, "\r\n", sizeof("\r\n")-1);
/* Request content, such as for POST requests */
if (context && php_stream_context_get_option(context, "http", "content", &tmpzval) == SUCCESS && Z_STRLEN_PP(tmpzval) > 0) {
php_stream_write(stream, Z_STRVAL_PP(tmpzval), Z_STRLEN_PP(tmpzval));
php_stream_write(stream, "\r\n\r\n", sizeof("\r\n\r\n")-1);
}
location[0] = '\0';
/*
* We need to read the HTTP response header one-by-one, because
* the original author did not know about MSG_PEEK.
* The chunk_size will be reset later, once we have read the
* header completely.
*/
if (options & STREAM_WILL_CAST)
chunk_size = php_stream_set_chunk_size(stream, 1);
if (!header_init && FAILURE == zend_hash_find(EG(active_symbol_table),
"http_response_header", sizeof("http_response_header"), (void **) &response_header)) {
header_init = 1;
}
if (header_init) {
zval *tmp;
MAKE_STD_ZVAL(tmp);
array_init(tmp);
ZEND_SET_SYMBOL(EG(active_symbol_table), "http_response_header", tmp);
zend_hash_find(EG(active_symbol_table),
"http_response_header", sizeof("http_response_header"), (void **) &response_header);
}
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 TSRMLS_CC) != NULL) {
zval *http_response;
int response_code;
MAKE_STD_ZVAL(http_response);
ZVAL_NULL(http_response);
if (tmp_line_len > 9) {
response_code = atoi(tmp_line + 9);
} else {
response_code = 0;
}
switch(response_code) {
case 200:
case 302:
case 301:
reqok = 1;
break;
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);
}
Z_STRLEN_P(http_response) = tmp_line_len;
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_PP(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 = (char *)emalloc(HTTP_HEADER_BLOCK_SIZE);
while (!body && !php_stream_eof(stream)) {
if (php_stream_gets(stream, http_header_line, HTTP_HEADER_BLOCK_SIZE-1) != NULL) {
char *p;
int found_eol = 0;
int http_header_line_length;
http_header_line[HTTP_HEADER_BLOCK_SIZE-1] = '\0';
p = http_header_line;
while(*p) {
while(*p == '\n' || *p == '\r') {
*p = '\0';
p--;
found_eol = 1;
}
if (found_eol)
break;
p++;
}
http_header_line_length = p-http_header_line+1;
if (!strncasecmp(http_header_line, "Location: ", 10)) {
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);
}
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_PP(response_header), &http_header, sizeof(zval *), NULL);
}
} else {
break;
}
}
if (!reqok || location[0] != '\0') {
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') {
zval *entry, **entryp;
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));
}
stream = php_stream_url_wrap_http_ex(NULL, new_path, mode, options, opened_path, context, --redirect_max, 0 STREAMS_CC TSRMLS_CC);
if (stream && stream->wrapperdata) {
entryp = &entry;
MAKE_STD_ZVAL(entry);
ZVAL_EMPTY_STRING(entry);
zend_hash_next_index_insert(Z_ARRVAL_PP(response_header), entryp, sizeof(zval *), NULL);
zend_hash_internal_pointer_reset(Z_ARRVAL_P(stream->wrapperdata));
while (zend_hash_get_current_data(Z_ARRVAL_P(stream->wrapperdata), (void **)&entryp) == SUCCESS) {
zval_add_ref(entryp);
zend_hash_next_index_insert(Z_ARRVAL_PP(response_header), entryp, sizeof(zval *), NULL);
zend_hash_move_forward(Z_ARRVAL_P(stream->wrapperdata));
}
zval_dtor(stream->wrapperdata);
FREE_ZVAL(stream->wrapperdata);
}
} else {
php_stream_wrapper_log_error(wrapper, options TSRMLS_CC, "HTTP request failed! %s", tmp_line);
}
}
out:
if (http_header_line)
efree(http_header_line);
if (scratch)
efree(scratch);
php_url_free(resource);
if (stream) {
if (header_init) {
stream->wrapperdata = *response_header;
zval_add_ref(response_header);
}
php_stream_notify_progress_init(context, 0, file_size);
/* Restore original chunk size now that we're done with headers (if applicable) */
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;
}
return stream;
}
static void php_fsockopen_stream(INTERNAL_FUNCTION_PARAMETERS, int persistent)
{
char *host;
int host_len;
long port = -1;
zval *zerrno = NULL, *zerrstr = NULL, *zcontext = NULL;
double timeout = FG(default_socket_timeout);
unsigned long conv;
struct timeval tv;
char *hashkey = NULL;
php_stream *stream = NULL;
php_stream_context *context = NULL;
int err;
RETVAL_FALSE;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s|lzzdr", &host, &host_len, &port, &zerrno, &zerrstr, &timeout, &zcontext) == FAILURE) {
RETURN_FALSE;
}
if (zcontext) {
ZEND_FETCH_RESOURCE(context, php_stream_context*, &zcontext, -1, "stream-context", php_le_stream_context());
}
if (persistent) {
spprintf(&hashkey, 0, "pfsockopen__%s:%ld", host, port);
switch(php_stream_from_persistent_id(hashkey, &stream TSRMLS_CC)) {
case PHP_STREAM_PERSISTENT_SUCCESS:
if (_php_network_is_stream_alive(stream TSRMLS_CC)) {
php_stream_to_zval(stream, return_value);
} else {
/* it died; we need to replace it */
php_stream_pclose(stream);
break;
}
/* fall through */
case PHP_STREAM_PERSISTENT_FAILURE:
efree(hashkey);
return;
}
}
/* prepare the timeout value for use */
conv = (unsigned long) (timeout * 1000000.0);
tv.tv_sec = conv / 1000000;
tv.tv_usec = conv % 1000000;
if (zerrno) {
zval_dtor(zerrno);
ZVAL_LONG(zerrno, 0);
}
if (zerrstr) {
zval_dtor(zerrstr);
ZVAL_STRING(zerrstr, "", 1);
}
if (port > 0) { /* connect to a host */
enum php_sslflags_t { php_ssl_none, php_ssl_v23, php_ssl_tls };
enum php_sslflags_t ssl_flags = php_ssl_none;
struct {
char *proto;
int protolen;
int socktype;
enum php_sslflags_t ssl_flags;
/* more flags to be added here */
} sockmodes[] = {
{ "udp://", 6, SOCK_DGRAM, php_ssl_none },
{ "tcp://", 6, SOCK_STREAM, php_ssl_none },
{ "ssl://", 6, SOCK_STREAM, php_ssl_v23 },
{ "tls://", 6, SOCK_STREAM, php_ssl_tls },
/* more modes to be added here */
{ NULL, 0, 0 }
};
int socktype = SOCK_STREAM;
int i;
for (i = 0; sockmodes[i].proto != NULL; i++) {
if (strncmp(host, sockmodes[i].proto, sockmodes[i].protolen) == 0) {
ssl_flags = sockmodes[i].ssl_flags;
socktype = sockmodes[i].socktype;
host += sockmodes[i].protolen;
break;
}
}
#ifndef HAVE_OPENSSL_EXT
if (ssl_flags != php_ssl_none) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "no SSL support in this build");
}
else
#endif
stream = php_stream_sock_open_host(host, (unsigned short)port, socktype, &tv, hashkey);
/* Preserve error */
err = php_socket_errno();
if (stream == NULL) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "unable to connect to %s:%ld", host, port);
} else if (context) {
php_stream_context_set(stream, context);
}
#ifdef HAVE_OPENSSL_EXT
if (stream && ssl_flags != php_ssl_none) {
int ssl_ret = FAILURE;
switch(ssl_flags) {
case php_ssl_v23:
ssl_ret = php_stream_sock_ssl_activate_with_method(stream, 1, SSLv23_client_method(), NULL TSRMLS_CC);
break;
case php_ssl_tls:
ssl_ret = php_stream_sock_ssl_activate_with_method(stream, 1, TLSv1_client_method(), NULL TSRMLS_CC);
break;
default:
/* unknown ?? */
break;
}
if (ssl_ret == FAILURE) {
php_error_docref(NULL TSRMLS_CC, E_WARNING, "failed to activate SSL mode %d", ssl_flags);
php_stream_close(stream);
stream = NULL;
}
}
#endif
} else {
/* FIXME: Win32 - this probably does not return sensible errno and errstr */
stream = php_stream_sock_open_unix(host, host_len, hashkey, &tv);
err = php_socket_errno();
}
if (hashkey)
efree(hashkey);
if (stream == NULL) {
if (zerrno) {
zval_dtor(zerrno);
ZVAL_LONG(zerrno, err);
}
if (zerrstr) {
char *buf = php_socket_strerror(err, NULL, 0);
/* no need to dup; we would only need to efree buf anyway */
zval_dtor(zerrstr);
ZVAL_STRING(zerrstr, buf, 0);
}
RETURN_FALSE;
}
if (zcontext) {
zend_list_addref(Z_RESVAL_P(zcontext));
}
php_stream_to_zval(stream, return_value);
}
