git.m6w6.name Git - m6w6/ext-http/blob - http_request_pool_api.c

   1 /*
   2    +----------------------------------------------------------------------+
   3    | PECL :: http                                                         |
   4    +----------------------------------------------------------------------+
   5    | This source file is subject to version 3.0 of the PHP license, that  |
   6    | is bundled with this package in the file LICENSE, and is available   |
   7    | through the world-wide-web at http://www.php.net/license/3_0.txt.    |
   8    | If you did not receive a copy of the PHP license and are unable to   |
   9    | obtain it through the world-wide-web, please send a note to          |
  10    | license@php.net so we can mail you a copy immediately.               |
  11    +----------------------------------------------------------------------+
  12    | Copyright (c) 2004-2005 Michael Wallner <mike@php.net>               |
  13    +----------------------------------------------------------------------+
  14 */
  15
  16 /* $Id$ */
  17
  18 #ifdef HAVE_CONFIG_H
  19 #       include "config.h"
  20 #endif
  21 #include "php.h"
  22
  23 #if defined(ZEND_ENGINE_2) && defined(HTTP_HAVE_CURL)
  24
  25 #include "php_http.h"
  26 #include "php_http_std_defs.h"
  27 #include "php_http_api.h"
  28 #include "php_http_request_api.h"
  29 #include "php_http_request_pool_api.h"
  30 #include "php_http_request_object.h"
  31 #include "php_http_requestpool_object.h"
  32
  33 #ifndef HTTP_DEBUG_REQPOOLS
  34 #       define HTTP_DEBUG_REQPOOLS 0
  35 #endif
  36
  37 ZEND_EXTERN_MODULE_GLOBALS(http);
  38
  39 #ifndef HAVE_CURL_MULTI_STRERROR
  40 #       define curl_multi_strerror(dummy) "unknown error"
  41 #endif
  42
  43 static void http_request_pool_freebody(http_request_callback_ctx **body);
  44 static int http_request_pool_compare_handles(void *h1, void *h2);
  45
  46 /* {{{ http_request_pool *http_request_pool_init(http_request_pool *) */
  47 PHP_HTTP_API http_request_pool *_http_request_pool_init(http_request_pool *pool TSRMLS_DC)
  48 {
  49         zend_bool free_pool;
  50 #if HTTP_DEBUG_REQPOOLS
  51         fprintf(stderr, "Initializing request pool %p\n", pool);
  52 #endif
  53         if ((free_pool = (!pool))) {
  54                 pool = emalloc(sizeof(http_request_pool));
  55                 pool->ch = NULL;
  56         }
  57
  58         if (!pool->ch) {
  59                 if (!(pool->ch = curl_multi_init())) {
  60                         http_error(HE_WARNING, HTTP_E_REQUEST, "Could not initialize curl");
  61                         if (free_pool) {
  62                                 efree(pool);
  63                         }
  64                         return NULL;
  65                 }
  66         }
  67
  68         pool->unfinished = 0;
  69         zend_llist_init(&pool->handles, sizeof(zval *), (llist_dtor_func_t) ZVAL_PTR_DTOR, 0);
  70         zend_llist_init(&pool->bodies, sizeof(http_request_callback_ctx *), (llist_dtor_func_t) http_request_pool_freebody, 0);
  71 #if HTTP_DEBUG_REQPOOLS
  72         fprintf(stderr, "Initialized request pool %p\n", pool);
  73 #endif
  74         return pool;
  75 }
  76 /* }}} */
  77
  78 /* {{{ STATUS http_request_pool_attach(http_request_pool *, zval *) */
  79 PHP_HTTP_API STATUS _http_request_pool_attach(http_request_pool *pool, zval *request TSRMLS_DC)
  80 {
  81         getObjectEx(http_request_object, req, request);
  82 #if HTTP_DEBUG_REQPOOLS
  83         fprintf(stderr, "Attaching HttpRequest(#%d) %p to pool %p\n", Z_OBJ_HANDLE_P(request), req, pool);
  84 #endif
  85         if (req->pool) {
  86                 http_error_ex(HE_WARNING, HTTP_E_INVALID_PARAM, "HttpRequest object(#%d) is already member of %s HttpRequestPool", Z_OBJ_HANDLE_P(request), req->pool == pool ? "this" : "another");
  87         } else {
  88                 http_request_callback_ctx *body = http_request_callback_data_ex(http_request_body_new(), 0);
  89
  90                 if (SUCCESS != http_request_pool_requesthandler(request, body->data)) {
  91                         http_error_ex(HE_WARNING, HTTP_E_REQUEST, "Could not initialize HttpRequest object for attaching to the HttpRequestPool");
  92                 } else {
  93                         CURLMcode code = curl_multi_add_handle(pool->ch, req->ch);
  94
  95                         if ((CURLM_OK != code) && (CURLM_CALL_MULTI_PERFORM != code)) {
  96                                 http_error_ex(HE_WARNING, HTTP_E_REQUEST_POOL, "Could not attach HttpRequest object to the HttpRequestPool: %s", curl_multi_strerror(code));
  97                         } else {
  98                                 req->pool = pool;
  99
 100                                 zend_llist_add_element(&pool->handles, &request);
 101                                 zend_llist_add_element(&pool->bodies, &body);
 102
 103                                 zval_add_ref(&request);
 104                                 zend_objects_store_add_ref(request TSRMLS_CC);
 105
 106 #if HTTP_DEBUG_REQPOOLS
 107                                 fprintf(stderr, "> %d HttpRequests attached to pool %p\n", zend_llist_count(&pool->handles), pool);
 108 #endif
 109                                 return SUCCESS;
 110                         }
 111                 }
 112                 efree(body->data);
 113                 efree(body);
 114         }
 115         return FAILURE;
 116 }
 117 /* }}} */
 118
 119 /* {{{ STATUS http_request_pool_detach(http_request_pool *, zval *) */
 120 PHP_HTTP_API STATUS _http_request_pool_detach(http_request_pool *pool, zval *request TSRMLS_DC)
 121 {
 122         getObjectEx(http_request_object, req, request);
 123 #if HTTP_DEBUG_REQPOOLS
 124         fprintf(stderr, "Detaching HttpRequest(#%d) %p from pool %p\n", Z_OBJ_HANDLE_P(request), req, pool);
 125 #endif
 126         if (!req->pool) {
 127                 /* not attached to any pool */
 128 #if HTTP_DEBUG_REQPOOLS
 129                 fprintf(stderr, "HttpRequest object(#%d) %p is not attached to any HttpRequestPool\n", Z_OBJ_HANDLE_P(request), req);
 130 #endif
 131         } else if (req->pool != pool) {
 132                 http_error_ex(HE_WARNING, HTTP_E_INVALID_PARAM, "HttpRequest object(#%d) is not attached to this HttpRequestPool", Z_OBJ_HANDLE_P(request));
 133         } else {
 134                 CURLMcode code;
 135
 136                 req->pool = NULL;
 137                 zend_llist_del_element(&pool->handles, request, http_request_pool_compare_handles);
 138 #if HTTP_DEBUG_REQPOOLS
 139                 fprintf(stderr, "> %d HttpRequests remaining in pool %p\n", zend_llist_count(&pool->handles), pool);
 140 #endif
 141                 if (CURLM_OK != (code = curl_multi_remove_handle(pool->ch, req->ch))) {
 142                         http_error_ex(HE_WARNING, HTTP_E_REQUEST_POOL, "Could not detach HttpRequest object from the HttpRequestPool: %s", curl_multi_strerror(code));
 143                 } else {
 144                         return SUCCESS;
 145                 }
 146         }
 147         return FAILURE;
 148 }
 149 /* }}} */
 150
 151 /* {{{ void http_request_pool_detach_all(http_request_pool *) */
 152 PHP_HTTP_API void _http_request_pool_detach_all(http_request_pool *pool TSRMLS_DC)
 153 {
 154         int count = zend_llist_count(&pool->handles);
 155 #if HTTP_DEBUG_REQPOOLS
 156         fprintf(stderr, "Detaching %d requests from pool %p\n", count, pool);
 157 #endif
 158         /*
 159          * we cannot apply a function to the llist which actually detaches
 160          * the curl handle *and* removes the llist element --
 161          * so let's get our hands dirty
 162          */
 163         if (count) {
 164                 int i = 0;
 165                 zend_llist_position pos;
 166                 zval **handle, **handles = emalloc(count * sizeof(zval *));
 167
 168                 for (handle = zend_llist_get_first_ex(&pool->handles, &pos); handle; handle = zend_llist_get_next_ex(&pool->handles, &pos)) {
 169                         handles[i++] = *handle;
 170                 }
 171                 /* should never happen */
 172                 if (i != count) {
 173                         zend_error(E_ERROR, "number of fetched request handles do not match overall count");
 174                         count = i;
 175                 }
 176                 for (i = 0; i < count; ++i) {
 177                         http_request_pool_detach(pool, handles[i]);
 178                 }
 179                 efree(handles);
 180         }
 181 #if HTTP_DEBUG_REQPOOLS
 182         fprintf(srderr, "Destroying %d request bodies of pool %p\n", zend_llist_count(&pool->bodies), pool);
 183 #endif
 184         /* free created bodies too */
 185         zend_llist_clean(&pool->bodies);
 186 }
 187
 188
 189 /* {{{ STATUS http_request_pool_send(http_request_pool *) */
 190 PHP_HTTP_API STATUS _http_request_pool_send(http_request_pool *pool TSRMLS_DC)
 191 {
 192 #if HTTP_DEBUG_REQPOOLS
 193         fprintf(stderr, "Attempt to send %d requests of pool %p\n", zend_llist_count(&pool->handles), pool);
 194 #endif
 195         while (http_request_pool_perform(pool)) {
 196 #if HTTP_DEBUG_REQPOOLS
 197                 fprintf(stderr, "> %d unfinished requests of pool %p remaining\n", pool->unfinished, pool);
 198 #endif
 199                 if (SUCCESS != http_request_pool_select(pool)) {
 200 #ifdef PHP_WIN32
 201                         http_error(HE_WARNING, HTTP_E_SOCKET, WSAGetLastError());
 202 #else
 203                         http_error(HE_WARNING, HTTP_E_SOCKET, strerror(errno));
 204 #endif
 205                         return FAILURE;
 206                 }
 207         }
 208 #if HTTP_DEBUG_REQPOOLS
 209         fprintf(stderr, "Finished sending %d HttpRequests of pool %p (still unfinished: %d)\n", zend_llist_count(&pool->handles), pool, pool->unfinished);
 210 #endif
 211         zend_llist_apply(&pool->handles, (llist_apply_func_t) http_request_pool_responsehandler TSRMLS_CC);
 212         return SUCCESS;
 213 }
 214 /* }}} */
 215
 216 /* {{{ void http_request_pool_dtor(http_request_pool *) */
 217 PHP_HTTP_API void _http_request_pool_dtor(http_request_pool *pool TSRMLS_DC)
 218 {
 219 #if HTTP_DEBUG_REQPOOLS
 220         fprintf(stderr, "Destructing request pool %p\n", pool);
 221 #endif
 222         pool->unfinished = 0;
 223         zend_llist_clean(&pool->handles);
 224         zend_llist_clean(&pool->bodies);
 225         curl_multi_cleanup(pool->ch);
 226 }
 227 /* }}} */
 228
 229 /* {{{ STATUS http_request_pool_select(http_request_pool *) */
 230 PHP_HTTP_API STATUS _http_request_pool_select(http_request_pool *pool)
 231 {
 232         int MAX;
 233         fd_set R, W, E;
 234         struct timeval timeout = {1, 0};
 235
 236         FD_ZERO(&R);
 237         FD_ZERO(&W);
 238         FD_ZERO(&E);
 239
 240         curl_multi_fdset(pool->ch, &R, &W, &E, &MAX);
 241         return (-1 != select(MAX + 1, &R, &W, &E, &timeout)) ? SUCCESS : FAILURE;
 242 }
 243 /* }}} */
 244
 245 /* {{{ int http_request_pool_perform(http_request_pool *) */
 246 PHP_HTTP_API int _http_request_pool_perform(http_request_pool *pool)
 247 {
 248         while (CURLM_CALL_MULTI_PERFORM == curl_multi_perform(pool->ch, &pool->unfinished));
 249         return pool->unfinished;
 250 }
 251 /* }}} */
 252
 253 /* {{{ STATUS http_request_pool_requesthandler(zval *, http_request_body *) */
 254 STATUS _http_request_pool_requesthandler(zval *request, http_request_body *body TSRMLS_DC)
 255 {
 256         getObjectEx(http_request_object, req, request);
 257         if (SUCCESS == http_request_object_requesthandler(req, request, body)) {
 258                 http_request_conv(req->ch, &req->response, &req->request);
 259                 return SUCCESS;
 260         }
 261         return FAILURE;
 262 }
 263 /* }}} */
 264
 265 /* {{{ void http_request_pool_responsehandler(zval **) */
 266 void _http_request_pool_responsehandler(zval **req TSRMLS_DC)
 267 {
 268         getObjectEx(http_request_object, obj, *req);
 269 #if HTTP_DEBUG_REQPOOLS
 270         fprintf(stderr, "Fetching data from HttpRequest(#%d) %p of pool %p\n", Z_OBJ_HANDLE_PP(req), obj, obj->pool);
 271 #endif
 272         http_request_object_responsehandler(obj, *req);
 273 }
 274 /* }}} */
 275
 276 /*#*/
 277
 278 /* {{{ static void http_request_pool_freebody(http_request_ctx **) */
 279 static void http_request_pool_freebody(http_request_callback_ctx **body)
 280 {
 281         HTTP_REQUEST_CALLBACK_DATA(*body, http_request_body *, b);
 282         http_request_body_free(b);
 283         efree(*body);
 284 }
 285 /* }}} */
 286
 287 /* {{{ static int http_request_pool_compare_handles(void *, void *) */
 288 static int http_request_pool_compare_handles(void *h1, void *h2)
 289 {
 290         int match = (Z_OBJ_HANDLE_PP((zval **) h1) == Z_OBJ_HANDLE_P((zval *) h2));
 291 #if HTTP_DEBUG_REQPOOLS
 292         /* if(match) fprintf(stderr, "OK\n"); */
 293 #endif
 294         return match;
 295 }
 296 /* }}} */
 297
 298 #endif /* ZEND_ENGINE_2 && HTTP_HAVE_CURL */
 299
 300
 301 /*
 302  * Local variables:
 303  * tab-width: 4
 304  * c-basic-offset: 4
 305  * End:
 306  * vim600: noet sw=4 ts=4 fdm=marker
 307  * vim<600: noet sw=4 ts=4
 308  */
 309