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Diffstat (limited to '1.2-netsec/apps/app_curl.c')
-rw-r--r-- | 1.2-netsec/apps/app_curl.c | 256 |
1 files changed, 256 insertions, 0 deletions
diff --git a/1.2-netsec/apps/app_curl.c b/1.2-netsec/apps/app_curl.c new file mode 100644 index 000000000..5cf4b167d --- /dev/null +++ b/1.2-netsec/apps/app_curl.c @@ -0,0 +1,256 @@ +/* + * Asterisk -- An open source telephony toolkit. + * + * Copyright (C) 2004 - 2005, Tilghman Lesher + * + * Tilghman Lesher <curl-20050919@the-tilghman.com> + * and Brian Wilkins <bwilkins@cfl.rr.com> (Added POST option) + * + * app_curl.c is distributed with no restrictions on usage or + * redistribution. + * + * See http://www.asterisk.org for more information about + * the Asterisk project. Please do not directly contact + * any of the maintainers of this project for assistance; + * the project provides a web site, mailing lists and IRC + * channels for your use. + * + */ + +/*! \file + * \brief Curl - App to load a URL + * + * \ingroup applications + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <curl/curl.h> + +#include "asterisk.h" + +ASTERISK_FILE_VERSION(__FILE__, "$Revision$") + +#include "asterisk/lock.h" +#include "asterisk/file.h" +#include "asterisk/logger.h" +#include "asterisk/channel.h" +#include "asterisk/pbx.h" +#include "asterisk/cli.h" +#include "asterisk/options.h" +#include "asterisk/module.h" + +static char *tdesc = "Load external URL"; + +static char *app = "Curl"; + +static char *synopsis = "Load an external URL"; + +static char *descrip = +" Curl(URL[|postdata]): This application will request the specified URL.\n" +"It is mainly used for signalling external applications of an event.\n" +"Parameters:\n" +" URL - This is the external URL to request.\n" +" postdata - This information will be treated as POST data.\n" +"This application will set the following variable:\n" +" CURL - This variable will contain the resulting page.\n" +"This application has been deprecated in favor of the CURL function.\n"; + +STANDARD_LOCAL_USER; + +LOCAL_USER_DECL; + +struct MemoryStruct { + char *memory; + size_t size; +}; + +static void *myrealloc(void *ptr, size_t size) +{ + /* There might be a realloc() out there that doesn't like reallocing + NULL pointers, so we take care of it here */ + if (ptr) + return realloc(ptr, size); + else + return malloc(size); +} + +static size_t WriteMemoryCallback(void *ptr, size_t size, size_t nmemb, void *data) +{ + register int realsize = size * nmemb; + struct MemoryStruct *mem = (struct MemoryStruct *)data; + + mem->memory = (char *)myrealloc(mem->memory, mem->size + realsize + 1); + if (mem->memory) { + memcpy(&(mem->memory[mem->size]), ptr, realsize); + mem->size += realsize; + mem->memory[mem->size] = 0; + } + return realsize; +} + +static int curl_internal(struct MemoryStruct *chunk, char *url, char *post) +{ + CURL *curl; + + curl_global_init(CURL_GLOBAL_ALL); + curl = curl_easy_init(); + + if (!curl) { + return -1; + } + + curl_easy_setopt(curl, CURLOPT_URL, url); + curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback); + curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)chunk); + curl_easy_setopt(curl, CURLOPT_USERAGENT, "asterisk-libcurl-agent/1.0"); + + if (post) { + curl_easy_setopt(curl, CURLOPT_POST, 1); + curl_easy_setopt(curl, CURLOPT_POSTFIELDS, post); + } + + curl_easy_perform(curl); + curl_easy_cleanup(curl); + return 0; +} + +static int curl_exec(struct ast_channel *chan, void *data) +{ + int res = 0; + struct localuser *u; + char *info, *post_data=NULL, *url; + struct MemoryStruct chunk = { NULL, 0 }; + static int dep_warning = 0; + + if (!dep_warning) { + ast_log(LOG_WARNING, "The application Curl is deprecated. Please use the CURL() function instead.\n"); + dep_warning = 1; + } + + if (ast_strlen_zero(data)) { + ast_log(LOG_WARNING, "Curl requires an argument (URL)\n"); + return -1; + } + + LOCAL_USER_ADD(u); + + if ((info = ast_strdupa(data))) { + url = strsep(&info, "|"); + post_data = info; + } else { + ast_log(LOG_ERROR, "Out of memory\n"); + LOCAL_USER_REMOVE(u); + return -1; + } + + if (! curl_internal(&chunk, url, post_data)) { + if (chunk.memory) { + chunk.memory[chunk.size] = '\0'; + if (chunk.memory[chunk.size - 1] == 10) + chunk.memory[chunk.size - 1] = '\0'; + + pbx_builtin_setvar_helper(chan, "CURL", chunk.memory); + + free(chunk.memory); + } + } else { + ast_log(LOG_ERROR, "Cannot allocate curl structure\n"); + res = -1; + } + + LOCAL_USER_REMOVE(u); + return res; +} + +static char *acf_curl_exec(struct ast_channel *chan, char *cmd, char *data, char *buf, size_t len) +{ + struct localuser *u; + char *info, *post_data=NULL, *url; + struct MemoryStruct chunk = { NULL, 0 }; + + *buf = '\0'; + + if (ast_strlen_zero(data)) { + ast_log(LOG_WARNING, "CURL requires an argument (URL)\n"); + return buf; + } + + LOCAL_USER_ACF_ADD(u); + + info = ast_strdupa(data); + if (!info) { + ast_log(LOG_ERROR, "Out of memory\n"); + LOCAL_USER_REMOVE(u); + return buf; + } + + url = strsep(&info, "|"); + post_data = info; + + if (! curl_internal(&chunk, url, post_data)) { + if (chunk.memory) { + chunk.memory[chunk.size] = '\0'; + if (chunk.memory[chunk.size - 1] == 10) + chunk.memory[chunk.size - 1] = '\0'; + + ast_copy_string(buf, chunk.memory, len); + free(chunk.memory); + } + } else { + ast_log(LOG_ERROR, "Cannot allocate curl structure\n"); + } + + LOCAL_USER_REMOVE(u); + return buf; +} + +struct ast_custom_function acf_curl = { + .name = "CURL", + .synopsis = "Retrieves the contents of a URL", + .syntax = "CURL(url[|post-data])", + .desc = + " url - URL to retrieve\n" + " post-data - Optional data to send as a POST (GET is default action)\n", + .read = acf_curl_exec, +}; + +int unload_module(void) +{ + int res; + + res = ast_custom_function_unregister(&acf_curl); + res |= ast_unregister_application(app); + + STANDARD_HANGUP_LOCALUSERS; + + return res; +} + +int load_module(void) +{ + int res; + + res = ast_custom_function_register(&acf_curl); + res |= ast_register_application(app, curl_exec, synopsis, descrip); + + return res; +} + +char *description(void) +{ + return tdesc; +} + +int usecount(void) +{ + int res; + STANDARD_USECOUNT(res); + return res; +} + +char *key() +{ + return ASTERISK_GPL_KEY; +} |