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

   1 /*
   2     +--------------------------------------------------------------------+
   3     | PECL :: http                                                       |
   4     +--------------------------------------------------------------------+
   5     | Redistribution and use in source and binary forms, with or without |
   6     | modification, are permitted provided that the conditions mentioned |
   7     | in the accompanying LICENSE file are met.                          |
   8     +--------------------------------------------------------------------+
   9     | Copyright (c) 2004-2006, Michael Wallner <mike@php.net>            |
  10     +--------------------------------------------------------------------+
  11 */
  12
  13 /* $Id$ */
  14
  15 #define HTTP_WANT_CURL
  16 #include "php_http.h"
  17
  18 #if defined(ZEND_ENGINE_2) && defined(HTTP_HAVE_CURL)
  19
  20 #include "php_http_api.h"
  21 #include "php_http_request_datashare_api.h"
  22 #include "php_http_request_api.h"
  23 #include "php_http_request_object.h"
  24 #ifdef HTTP_HAVE_PERSISTENT_HANDLES
  25 #       include "php_http_persistent_handle_api.h"
  26 #endif
  27
  28 #ifndef HAVE_CURL_SHARE_STRERROR
  29 #       define curl_share_strerror(dummy) "unknown error"
  30 #endif
  31 #ifndef HAVE_CURL_EASY_STRERROR
  32 #       define curl_easy_strerror(dummy) "unknown error"
  33 #endif
  34
  35 #ifdef HTTP_HAVE_PERSISTENT_HANDLES
  36 #       define HTTP_CURL_SHARE_CTOR(ch) (SUCCESS == http_persistent_handle_acquire("http_request_datashare", &(ch)))
  37 #       define HTTP_CURL_SHARE_DTOR(chp) http_persistent_handle_release("http_request_datashare", (chp))
  38 #else
  39 #       define HTTP_CURL_SHARE_CTOR(ch) ((ch) = curl_share_init())
  40 #       define HTTP_CURL_SHARE_DTOR(chp) curl_share_cleanup(*(chp)); *(chp) = NULL
  41 #endif
  42
  43 static HashTable http_request_datashare_options;
  44 static http_request_datashare http_request_datashare_global;
  45 static int http_request_datashare_compare_handles(void *h1, void *h2);
  46 static void http_request_datashare_destroy_handles(void *el);
  47 #ifdef ZTS
  48 static void http_request_datashare_lock_func(CURL *handle, curl_lock_data data, curl_lock_access locktype, void *userptr);
  49 static void http_request_datashare_unlock_func(CURL *handle, curl_lock_data data, void *userptr);
  50 #endif
  51
  52 http_request_datashare *_http_request_datashare_global_get(void)
  53 {
  54         return &http_request_datashare_global;
  55 }
  56
  57 PHP_MINIT_FUNCTION(http_request_datashare)
  58 {
  59         curl_lock_data val;
  60
  61 #ifdef HTTP_HAVE_PERSISTENT_HANDLES
  62         if (SUCCESS != http_persistent_handle_provide("http_request_datashare", curl_share_init, (http_persistent_handle_dtor) curl_share_cleanup)) {
  63                 return FAILURE;
  64         }
  65 #endif
  66
  67         if (!http_request_datashare_init_ex(&http_request_datashare_global, 1)) {
  68                 return FAILURE;
  69         }
  70
  71         zend_hash_init(&http_request_datashare_options, 4, NULL, NULL, 1);
  72 #define ADD_DATASHARE_OPT(name, opt) \
  73         val = opt; \
  74         zend_hash_add(&http_request_datashare_options, name, sizeof(name), &val, sizeof(curl_lock_data), NULL)
  75         ADD_DATASHARE_OPT("cookie", CURL_LOCK_DATA_COOKIE);
  76         ADD_DATASHARE_OPT("dns", CURL_LOCK_DATA_DNS);
  77         ADD_DATASHARE_OPT("ssl", CURL_LOCK_DATA_SSL_SESSION);
  78         ADD_DATASHARE_OPT("connect", CURL_LOCK_DATA_CONNECT);
  79
  80         return SUCCESS;
  81 }
  82
  83 PHP_MSHUTDOWN_FUNCTION(http_request_datashare)
  84 {
  85         http_request_datashare_dtor(&http_request_datashare_global);
  86         zend_hash_destroy(&http_request_datashare_options);
  87
  88         return SUCCESS;
  89 }
  90
  91 PHP_RINIT_FUNCTION(http_request_datashare)
  92 {
  93         zend_llist_init(&HTTP_G->request.datashare.handles, sizeof(zval *), http_request_datashare_destroy_handles, 0);
  94
  95         return SUCCESS;
  96 }
  97
  98 PHP_RSHUTDOWN_FUNCTION(http_request_datashare)
  99 {
 100         zend_llist_destroy(&HTTP_G->request.datashare.handles);
 101
 102         return SUCCESS;
 103 }
 104
 105 PHP_HTTP_API http_request_datashare *_http_request_datashare_init_ex(http_request_datashare *share, zend_bool persistent TSRMLS_DC)
 106 {
 107         zend_bool free_share;
 108
 109         if ((free_share = !share)) {
 110                 share = pemalloc(sizeof(http_request_datashare), persistent);
 111         }
 112         memset(share, 0, sizeof(http_request_datashare));
 113
 114         if (!HTTP_CURL_SHARE_CTOR(share->ch)) {
 115                 if (free_share) {
 116                         pefree(share, persistent);
 117                 }
 118                 return NULL;
 119         }
 120
 121         if (!(share->persistent = persistent)) {
 122                 share->handles = emalloc(sizeof(zend_llist));
 123                 zend_llist_init(share->handles, sizeof(zval *), ZVAL_PTR_DTOR, 0);
 124 #ifdef ZTS
 125         } else {
 126                 int i;
 127
 128                 share->locks = pecalloc(CURL_LOCK_DATA_LAST, sizeof(http_request_datashare_lock), 1);
 129                 for (i = 0; i < CURL_LOCK_DATA_LAST; ++i) {
 130                         share->locks[i].mx = tsrm_mutex_alloc();
 131                 }
 132                 curl_share_setopt(share->ch, CURLSHOPT_LOCKFUNC, http_request_datashare_lock_func);
 133                 curl_share_setopt(share->ch, CURLSHOPT_UNLOCKFUNC, http_request_datashare_unlock_func);
 134                 curl_share_setopt(share->ch, CURLSHOPT_USERDATA, share);
 135 #endif
 136         }
 137
 138         return share;
 139 }
 140
 141 PHP_HTTP_API STATUS _http_request_datashare_attach(http_request_datashare *share, zval *request TSRMLS_DC)
 142 {
 143         CURLcode rc;
 144         getObjectEx(http_request_object, obj, request);
 145
 146         if (obj->share) {
 147                 if (obj->share == share)  {
 148                         return SUCCESS;
 149                 } else if (SUCCESS != http_request_datashare_detach(obj->share, request)) {
 150                         return FAILURE;
 151                 }
 152         }
 153
 154         HTTP_CHECK_CURL_INIT(obj->request->ch, http_curl_init_ex(obj->request->ch, obj->request), return FAILURE);
 155         if (CURLE_OK != (rc = curl_easy_setopt(obj->request->ch, CURLOPT_SHARE, share->ch))) {
 156                 http_error_ex(HE_WARNING, HTTP_E_REQUEST, "Could not attach HttpRequest object(#%d) to the HttpRequestDataShare: %s", Z_OBJ_HANDLE_P(request), curl_easy_strerror(rc));
 157                 return FAILURE;
 158         }
 159
 160         obj->share = share;
 161         ZVAL_ADDREF(request);
 162         zend_llist_add_element(HTTP_RSHARE_HANDLES(share), (void *) &request);
 163
 164         return SUCCESS;
 165 }
 166
 167 PHP_HTTP_API STATUS _http_request_datashare_detach(http_request_datashare *share, zval *request TSRMLS_DC)
 168 {
 169         CURLcode rc;
 170         getObjectEx(http_request_object, obj, request);
 171
 172         if (!obj->share) {
 173                 http_error_ex(HE_WARNING, HTTP_E_REQUEST, "HttpRequest object(#%d) is not attached to any HttpRequestDataShare", Z_OBJ_HANDLE_P(request));
 174         } else if (obj->share != share) {
 175                 http_error_ex(HE_WARNING, HTTP_E_REQUEST, "HttpRequest object(#%d) is not attached to this HttpRequestDataShare", Z_OBJ_HANDLE_P(request));
 176         } else if (CURLE_OK != (rc = curl_easy_setopt(obj->request->ch, CURLOPT_SHARE, NULL))) {
 177                 http_error_ex(HE_WARNING, HTTP_E_REQUEST, "Could not detach HttpRequest object(#%d) from the HttpRequestDataShare: %s", Z_OBJ_HANDLE_P(request), curl_share_strerror(rc));
 178         } else {
 179                 obj->share = NULL;
 180                 zend_llist_del_element(HTTP_RSHARE_HANDLES(share), request, http_request_datashare_compare_handles);
 181                 return SUCCESS;
 182         }
 183         return FAILURE;
 184 }
 185
 186 PHP_HTTP_API void _http_request_datashare_detach_all(http_request_datashare *share TSRMLS_DC)
 187 {
 188         zval **r;
 189
 190         while ((r = zend_llist_get_first(HTTP_RSHARE_HANDLES(share)))) {
 191                 http_request_datashare_detach(share, *r);
 192         }
 193 }
 194
 195 PHP_HTTP_API void _http_request_datashare_dtor(http_request_datashare *share TSRMLS_DC)
 196 {
 197         if (!share->persistent) {
 198                 zend_llist_destroy(share->handles);
 199                 efree(share->handles);
 200         }
 201         HTTP_CURL_SHARE_DTOR(&share->ch);
 202 #ifdef ZTS
 203         if (share->persistent) {
 204                 int i;
 205
 206                 for (i = 0; i < CURL_LOCK_DATA_LAST; ++i) {
 207                         tsrm_mutex_free(share->locks[i].mx);
 208                 }
 209                 pefree(share->locks, 1);
 210         }
 211 #endif
 212 }
 213
 214 PHP_HTTP_API void _http_request_datashare_free(http_request_datashare **share TSRMLS_DC)
 215 {
 216         http_request_datashare_dtor(*share);
 217         pefree(*share, (*share)->persistent);
 218         *share = NULL;
 219 }
 220
 221 PHP_HTTP_API STATUS _http_request_datashare_set(http_request_datashare *share, const char *option, size_t option_len, zend_bool enable TSRMLS_DC)
 222 {
 223         curl_lock_data *opt;
 224         CURLSHcode rc;
 225
 226         if (SUCCESS == zend_hash_find(&http_request_datashare_options, (char *) option, option_len + 1, (void *) &opt)) {
 227                 if (CURLSHE_OK == (rc = curl_share_setopt(share->ch, enable ? CURLSHOPT_SHARE : CURLSHOPT_UNSHARE, *opt))) {
 228                         return SUCCESS;
 229                 }
 230                 http_error_ex(HE_WARNING, HTTP_E_REQUEST, "Could not %s sharing of %s data: %s",  enable ? "enable" : "disable", option, curl_share_strerror(rc));
 231         }
 232         return FAILURE;
 233 }
 234
 235 static int http_request_datashare_compare_handles(void *h1, void *h2)
 236 {
 237         return (Z_OBJ_HANDLE_PP((zval **) h1) == Z_OBJ_HANDLE_P((zval *) h2));
 238 }
 239
 240 static void http_request_datashare_destroy_handles(void *el)
 241 {
 242         zval **r = (zval **) el;
 243         TSRMLS_FETCH();
 244
 245         { /* gcc 2.95 needs these braces */
 246                 getObjectEx(http_request_object, obj, *r);
 247
 248                 curl_easy_setopt(obj->request->ch, CURLOPT_SHARE, NULL);
 249                 zval_ptr_dtor(r);
 250         }
 251 }
 252
 253 #ifdef ZTS
 254 static void http_request_datashare_lock_func(CURL *handle, curl_lock_data data, curl_lock_access locktype, void *userptr)
 255 {
 256         http_request_datashare *share = (http_request_datashare *) userptr;
 257
 258         /* TSRM can't distinguish shared/exclusive locks */
 259         tsrm_mutex_lock(share->locks[data].mx);
 260         share->locks[data].ch = handle;
 261 }
 262
 263 static void http_request_datashare_unlock_func(CURL *handle, curl_lock_data data, void *userptr)
 264 {
 265         http_request_datashare *share = (http_request_datashare *) userptr;
 266
 267         if (share->locks[data].ch == handle) {
 268                 tsrm_mutex_unlock(share->locks[data].mx);
 269         }
 270 }
 271 #endif
 272
 273 #endif /* ZEND_ENGINE_2 && HTTP_HAVE_CURL */
 274
 275
 276 /*
 277  * Local variables:
 278  * tab-width: 4
 279  * c-basic-offset: 4
 280  * End:
 281  * vim600: noet sw=4 ts=4 fdm=marker
 282  * vim<600: noet sw=4 ts=4
 283  */
 284