672 lines
18 KiB
C
672 lines
18 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 1999 - 2008, Digium, Inc.
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*
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* Tilghman Lesher <res_config_curl_v1@the-tilghman.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*! \file
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*
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* \brief curl plugin for portable configuration engine
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*
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* \author Tilghman Lesher <res_config_curl_v1@the-tilghman.com>
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*
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* \extref Depends on the CURL library - http://curl.haxx.se/
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*
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*/
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/*** MODULEINFO
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<depend>curl</depend>
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<support_level>core</support_level>
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***/
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#include "asterisk.h"
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ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
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#include <curl/curl.h>
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#include "asterisk/file.h"
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#include "asterisk/channel.h"
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#include "asterisk/pbx.h"
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#include "asterisk/config.h"
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#include "asterisk/module.h"
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#include "asterisk/lock.h"
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#include "asterisk/utils.h"
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#include "asterisk/threadstorage.h"
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AST_THREADSTORAGE(query_buf);
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AST_THREADSTORAGE(result_buf);
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/*!
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* \brief Execute a curl query and return ast_variable list
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* \param url The base URL from which to retrieve data
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* \param unused Not currently used
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* \param ap list containing one or more field/operator/value set.
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*
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* \retval var on success
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* \retval NULL on failure
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*/
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static struct ast_variable *realtime_curl(const char *url, const char *unused, va_list ap)
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{
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struct ast_str *query, *buffer;
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char buf1[256], buf2[256];
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const char *newparam, *newval;
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char *stringp, *pair, *key;
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int i;
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struct ast_variable *var = NULL, *prev = NULL;
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if (!ast_custom_function_find("CURL")) {
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ast_log(LOG_ERROR, "func_curl.so must be loaded in order to use res_config_curl.so!!\n");
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return NULL;
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}
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if (!(query = ast_str_thread_get(&query_buf, 16))) {
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return NULL;
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}
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if (!(buffer = ast_str_thread_get(&result_buf, 16))) {
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return NULL;
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}
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ast_str_set(&query, 0, "${CURL(%s/single,", url);
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for (i = 0; (newparam = va_arg(ap, const char *)); i++) {
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newval = va_arg(ap, const char *);
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ast_uri_encode(newparam, buf1, sizeof(buf1), ast_uri_http);
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ast_uri_encode(newval, buf2, sizeof(buf2), ast_uri_http);
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ast_str_append(&query, 0, "%s%s=%s", i > 0 ? "&" : "", buf1, buf2);
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}
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va_end(ap);
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ast_str_append(&query, 0, ")}");
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ast_str_substitute_variables(&buffer, 0, NULL, ast_str_buffer(query));
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/* Remove any trailing newline characters */
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if ((stringp = strchr(ast_str_buffer(buffer), '\r')) || (stringp = strchr(ast_str_buffer(buffer), '\n'))) {
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*stringp = '\0';
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}
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stringp = ast_str_buffer(buffer);
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while ((pair = strsep(&stringp, "&"))) {
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key = strsep(&pair, "=");
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ast_uri_decode(key, ast_uri_http);
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if (pair) {
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ast_uri_decode(pair, ast_uri_http);
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}
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if (!ast_strlen_zero(key)) {
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if (prev) {
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prev->next = ast_variable_new(key, S_OR(pair, ""), "");
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if (prev->next) {
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prev = prev->next;
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}
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} else {
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prev = var = ast_variable_new(key, S_OR(pair, ""), "");
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}
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}
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}
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return var;
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}
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/*!
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* \brief Excute an Select query and return ast_config list
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* \param url
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* \param unused
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* \param ap list containing one or more field/operator/value set.
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*
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* \retval struct ast_config pointer on success
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* \retval NULL on failure
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*/
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static struct ast_config *realtime_multi_curl(const char *url, const char *unused, va_list ap)
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{
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struct ast_str *query, *buffer;
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char buf1[256], buf2[256];
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const char *newparam, *newval;
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char *stringp, *line, *pair, *key, *initfield = NULL;
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int i;
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struct ast_variable *var = NULL;
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struct ast_config *cfg = NULL;
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struct ast_category *cat = NULL;
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if (!ast_custom_function_find("CURL")) {
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ast_log(LOG_ERROR, "func_curl.so must be loaded in order to use res_config_curl.so!!\n");
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return NULL;
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}
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if (!(query = ast_str_thread_get(&query_buf, 16))) {
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return NULL;
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}
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if (!(buffer = ast_str_thread_get(&result_buf, 16))) {
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return NULL;
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}
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ast_str_set(&query, 0, "${CURL(%s/multi,", url);
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for (i = 0; (newparam = va_arg(ap, const char *)); i++) {
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newval = va_arg(ap, const char *);
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if (i == 0) {
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char *op;
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initfield = ast_strdupa(newparam);
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if ((op = strchr(initfield, ' ')))
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*op = '\0';
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}
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ast_uri_encode(newparam, buf1, sizeof(buf1), ast_uri_http);
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ast_uri_encode(newval, buf2, sizeof(buf2), ast_uri_http);
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ast_str_append(&query, 0, "%s%s=%s", i > 0 ? "&" : "", buf1, buf2);
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}
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va_end(ap);
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ast_str_append(&query, 0, ")}");
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/* Do the CURL query */
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ast_str_substitute_variables(&buffer, 0, NULL, ast_str_buffer(query));
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if (!(cfg = ast_config_new())) {
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return NULL;
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}
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/* Line oriented output */
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stringp = ast_str_buffer(buffer);
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while ((line = strsep(&stringp, "\r\n"))) {
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if (ast_strlen_zero(line)) {
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continue;
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}
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if (!(cat = ast_category_new("", "", 99999))) {
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continue;
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}
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while ((pair = strsep(&line, "&"))) {
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key = strsep(&pair, "=");
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ast_uri_decode(key, ast_uri_http);
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if (pair) {
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ast_uri_decode(pair, ast_uri_http);
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}
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if (!strcasecmp(key, initfield) && pair) {
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ast_category_rename(cat, pair);
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}
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if (!ast_strlen_zero(key)) {
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var = ast_variable_new(key, S_OR(pair, ""), "");
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ast_variable_append(cat, var);
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}
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}
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ast_category_append(cfg, cat);
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}
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return cfg;
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}
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/*!
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* \brief Execute an UPDATE query
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* \param url
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* \param unused
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* \param keyfield where clause field
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* \param lookup value of field for where clause
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* \param ap list containing one or more field/value set(s).
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*
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* Update a database table, prepare the sql statement using keyfield and lookup
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* control the number of records to change. All values to be changed are stored in ap list.
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* Sub-in the values to the prepared statement and execute it.
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*
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* \retval number of rows affected
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* \retval -1 on failure
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*/
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static int update_curl(const char *url, const char *unused, const char *keyfield, const char *lookup, va_list ap)
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{
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struct ast_str *query, *buffer;
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char buf1[256], buf2[256];
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const char *newparam, *newval;
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char *stringp;
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int i, rowcount = -1;
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if (!ast_custom_function_find("CURL")) {
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ast_log(LOG_ERROR, "func_curl.so must be loaded in order to use res_config_curl.so!!\n");
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return -1;
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}
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if (!(query = ast_str_thread_get(&query_buf, 16))) {
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return -1;
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}
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if (!(buffer = ast_str_thread_get(&result_buf, 16))) {
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return -1;
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}
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ast_uri_encode(keyfield, buf1, sizeof(buf1), ast_uri_http);
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ast_uri_encode(lookup, buf2, sizeof(buf2), ast_uri_http);
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ast_str_set(&query, 0, "${CURL(%s/update?%s=%s,", url, buf1, buf2);
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for (i = 0; (newparam = va_arg(ap, const char *)); i++) {
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newval = va_arg(ap, const char *);
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ast_uri_encode(newparam, buf1, sizeof(buf1), ast_uri_http);
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ast_uri_encode(newval, buf2, sizeof(buf2), ast_uri_http);
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ast_str_append(&query, 0, "%s%s=%s", i > 0 ? "&" : "", buf1, buf2);
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}
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va_end(ap);
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ast_str_append(&query, 0, ")}");
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ast_str_substitute_variables(&buffer, 0, NULL, ast_str_buffer(query));
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/* Line oriented output */
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stringp = ast_str_buffer(buffer);
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while (*stringp <= ' ') {
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stringp++;
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}
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sscanf(stringp, "%30d", &rowcount);
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if (rowcount >= 0) {
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return (int)rowcount;
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}
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return -1;
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}
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static int update2_curl(const char *url, const char *unused, va_list ap)
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{
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struct ast_str *query, *buffer;
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char buf1[200], buf2[200];
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const char *newparam, *newval;
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char *stringp;
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int rowcount = -1, lookup = 1, first = 1;
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if (!ast_custom_function_find("CURL")) {
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ast_log(LOG_ERROR, "func_curl.so must be loaded in order to use res_config_curl.so!!\n");
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return -1;
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}
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if (!(query = ast_str_thread_get(&query_buf, 1000)))
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return -1;
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if (!(buffer = ast_str_thread_get(&result_buf, 16))) {
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return -1;
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}
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ast_str_set(&query, 0, "${CURL(%s/update?", url);
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for (;;) {
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if ((newparam = va_arg(ap, const char *)) == SENTINEL) {
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if (lookup) {
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lookup = 0;
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ast_str_append(&query, 0, ",");
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/* Back to the first parameter; we don't need a starting '&' */
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first = 1;
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continue;
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} else {
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break;
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}
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}
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newval = va_arg(ap, const char *);
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ast_uri_encode(newparam, buf1, sizeof(buf1), ast_uri_http);
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ast_uri_encode(newval, buf2, sizeof(buf2), ast_uri_http);
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ast_str_append(&query, 0, "%s%s=%s", first ? "" : "&", buf1, buf2);
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first = 0;
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}
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va_end(ap);
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ast_str_append(&query, 0, ")}");
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/* Proxies work, by setting CURLOPT options in the [globals] section of
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* extensions.conf. Unfortunately, this means preloading pbx_config.so
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* so that they have an opportunity to be set prior to startup realtime
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* queries. */
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ast_str_substitute_variables(&buffer, 0, NULL, ast_str_buffer(query));
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/* Line oriented output */
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stringp = ast_str_buffer(buffer);
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while (*stringp <= ' ') {
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stringp++;
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}
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sscanf(stringp, "%30d", &rowcount);
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if (rowcount >= 0) {
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return (int)rowcount;
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}
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return -1;
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}
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/*!
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* \brief Execute an INSERT query
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* \param url
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* \param unused
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* \param ap list containing one or more field/value set(s)
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*
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* Insert a new record into database table, prepare the sql statement.
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* All values to be changed are stored in ap list.
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* Sub-in the values to the prepared statement and execute it.
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*
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* \retval number of rows affected
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* \retval -1 on failure
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*/
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static int store_curl(const char *url, const char *unused, va_list ap)
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{
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struct ast_str *query, *buffer;
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char buf1[256], buf2[256];
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const char *newparam, *newval;
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char *stringp;
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int i, rowcount = -1;
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if (!ast_custom_function_find("CURL")) {
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ast_log(LOG_ERROR, "func_curl.so must be loaded in order to use res_config_curl.so!!\n");
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return -1;
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}
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if (!(query = ast_str_thread_get(&query_buf, 1000))) {
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return -1;
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}
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if (!(buffer = ast_str_thread_get(&result_buf, 16))) {
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return -1;
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}
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ast_str_set(&query, 0, "${CURL(%s/store,", url);
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for (i = 0; (newparam = va_arg(ap, const char *)); i++) {
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newval = va_arg(ap, const char *);
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ast_uri_encode(newparam, buf1, sizeof(buf1), ast_uri_http);
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ast_uri_encode(newval, buf2, sizeof(buf2), ast_uri_http);
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ast_str_append(&query, 0, "%s%s=%s", i > 0 ? "&" : "", buf1, buf2);
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}
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va_end(ap);
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ast_str_append(&query, 0, ")}");
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ast_str_substitute_variables(&buffer, 0, NULL, ast_str_buffer(query));
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stringp = ast_str_buffer(buffer);
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while (*stringp <= ' ') {
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stringp++;
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}
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sscanf(stringp, "%30d", &rowcount);
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if (rowcount >= 0) {
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return rowcount;
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}
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return -1;
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}
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/*!
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* \brief Execute an DELETE query
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* \param url
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* \param unused
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* \param keyfield where clause field
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* \param lookup value of field for where clause
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* \param ap list containing one or more field/value set(s)
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*
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* Delete a row from a database table, prepare the sql statement using keyfield and lookup
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* control the number of records to change. Additional params to match rows are stored in ap list.
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* Sub-in the values to the prepared statement and execute it.
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*
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* \retval number of rows affected
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* \retval -1 on failure
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*/
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static int destroy_curl(const char *url, const char *unused, const char *keyfield, const char *lookup, va_list ap)
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{
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struct ast_str *query, *buffer;
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char buf1[200], buf2[200];
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const char *newparam, *newval;
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char *stringp;
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int i, rowcount = -1;
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if (!ast_custom_function_find("CURL")) {
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ast_log(LOG_ERROR, "func_curl.so must be loaded in order to use res_config_curl.so!!\n");
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return -1;
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}
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if (!(query = ast_str_thread_get(&query_buf, 1000))) {
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return -1;
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}
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if (!(buffer = ast_str_thread_get(&result_buf, 16))) {
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return -1;
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}
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ast_uri_encode(keyfield, buf1, sizeof(buf1), ast_uri_http);
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ast_uri_encode(lookup, buf2, sizeof(buf2), ast_uri_http);
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ast_str_set(&query, 0, "${CURL(%s/destroy,%s=%s&", url, buf1, buf2);
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for (i = 0; (newparam = va_arg(ap, const char *)); i++) {
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newval = va_arg(ap, const char *);
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ast_uri_encode(newparam, buf1, sizeof(buf1), ast_uri_http);
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ast_uri_encode(newval, buf2, sizeof(buf2), ast_uri_http);
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ast_str_append(&query, 0, "%s%s=%s", i > 0 ? "&" : "", buf1, buf2);
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}
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va_end(ap);
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ast_str_append(&query, 0, ")}");
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ast_str_substitute_variables(&buffer, 0, NULL, ast_str_buffer(query));
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/* Line oriented output */
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stringp = ast_str_buffer(buffer);
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while (*stringp <= ' ') {
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stringp++;
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}
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sscanf(stringp, "%30d", &rowcount);
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if (rowcount >= 0) {
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return (int)rowcount;
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}
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return -1;
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}
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static int require_curl(const char *url, const char *unused, va_list ap)
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{
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struct ast_str *query, *buffer;
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char *elm, field[256];
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int type, size;
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if (!ast_custom_function_find("CURL")) {
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ast_log(LOG_ERROR, "func_curl.so must be loaded in order to use res_config_curl.so!!\n");
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return -1;
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}
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if (!(query = ast_str_thread_get(&query_buf, 100))) {
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return -1;
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}
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if (!(buffer = ast_str_thread_get(&result_buf, 16))) {
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return -1;
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}
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ast_str_set(&query, 0, "${CURL(%s/require,", url);
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while ((elm = va_arg(ap, char *))) {
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type = va_arg(ap, require_type);
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size = va_arg(ap, int);
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ast_uri_encode(elm, field, sizeof(field), ast_uri_http);
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ast_str_append(&query, 0, "%s=%s%%3A%d", field,
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type == RQ_CHAR ? "char" :
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type == RQ_INTEGER1 ? "integer1" :
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type == RQ_UINTEGER1 ? "uinteger1" :
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type == RQ_INTEGER2 ? "integer2" :
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type == RQ_UINTEGER2 ? "uinteger2" :
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type == RQ_INTEGER3 ? "integer3" :
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type == RQ_UINTEGER3 ? "uinteger3" :
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type == RQ_INTEGER4 ? "integer4" :
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type == RQ_UINTEGER4 ? "uinteger4" :
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|
type == RQ_INTEGER8 ? "integer8" :
|
|
type == RQ_UINTEGER8 ? "uinteger8" :
|
|
type == RQ_DATE ? "date" :
|
|
type == RQ_DATETIME ? "datetime" :
|
|
type == RQ_FLOAT ? "float" :
|
|
"unknown", size);
|
|
}
|
|
va_end(ap);
|
|
|
|
ast_str_append(&query, 0, ")}");
|
|
ast_str_substitute_variables(&buffer, 0, NULL, ast_str_buffer(query));
|
|
return atoi(ast_str_buffer(buffer));
|
|
}
|
|
|
|
static struct ast_config *config_curl(const char *url, const char *unused, const char *file, struct ast_config *cfg, struct ast_flags flags, const char *sugg_incl, const char *who_asked)
|
|
{
|
|
struct ast_str *query, *buffer;
|
|
char buf1[200];
|
|
char *stringp, *line, *pair, *key;
|
|
int last_cat_metric = -1, cat_metric = -1;
|
|
struct ast_category *cat = NULL;
|
|
char *cur_cat = "";
|
|
char *category = "", *var_name = "", *var_val = "";
|
|
struct ast_flags loader_flags = { 0 };
|
|
|
|
if (!ast_custom_function_find("CURL")) {
|
|
ast_log(LOG_ERROR, "func_curl.so must be loaded in order to use res_config_curl.so!!\n");
|
|
return NULL;
|
|
}
|
|
|
|
if (!(query = ast_str_thread_get(&query_buf, 100))) {
|
|
return NULL;
|
|
}
|
|
|
|
if (!(buffer = ast_str_thread_get(&result_buf, 16))) {
|
|
return NULL;
|
|
}
|
|
|
|
ast_uri_encode(file, buf1, sizeof(buf1), ast_uri_http);
|
|
ast_str_set(&query, 0, "${CURL(%s/static?file=%s)}", url, buf1);
|
|
|
|
/* Do the CURL query */
|
|
ast_str_substitute_variables(&buffer, 0, NULL, ast_str_buffer(query));
|
|
|
|
/* Line oriented output */
|
|
stringp = ast_str_buffer(buffer);
|
|
cat = ast_config_get_current_category(cfg);
|
|
|
|
while ((line = strsep(&stringp, "\r\n"))) {
|
|
if (ast_strlen_zero(line)) {
|
|
continue;
|
|
}
|
|
|
|
while ((pair = strsep(&line, "&"))) {
|
|
key = strsep(&pair, "=");
|
|
ast_uri_decode(key, ast_uri_http);
|
|
if (pair) {
|
|
ast_uri_decode(pair, ast_uri_http);
|
|
}
|
|
|
|
if (!strcasecmp(key, "category")) {
|
|
category = S_OR(pair, "");
|
|
} else if (!strcasecmp(key, "var_name")) {
|
|
var_name = S_OR(pair, "");
|
|
} else if (!strcasecmp(key, "var_val")) {
|
|
var_val = S_OR(pair, "");
|
|
} else if (!strcasecmp(key, "cat_metric")) {
|
|
cat_metric = pair ? atoi(pair) : 0;
|
|
}
|
|
}
|
|
|
|
if (!strcmp(var_name, "#include")) {
|
|
if (!ast_config_internal_load(var_val, cfg, loader_flags, "", who_asked))
|
|
return NULL;
|
|
}
|
|
|
|
if (!cat || strcmp(category, cur_cat) || last_cat_metric != cat_metric) {
|
|
if (!(cat = ast_category_new(category, "", 99999)))
|
|
break;
|
|
cur_cat = category;
|
|
last_cat_metric = cat_metric;
|
|
ast_category_append(cfg, cat);
|
|
}
|
|
ast_variable_append(cat, ast_variable_new(var_name, var_val, ""));
|
|
}
|
|
|
|
return cfg;
|
|
}
|
|
|
|
static struct ast_config_engine curl_engine = {
|
|
.name = "curl",
|
|
.load_func = config_curl,
|
|
.realtime_func = realtime_curl,
|
|
.realtime_multi_func = realtime_multi_curl,
|
|
.store_func = store_curl,
|
|
.destroy_func = destroy_curl,
|
|
.update_func = update_curl,
|
|
.update2_func = update2_curl,
|
|
.require_func = require_curl,
|
|
};
|
|
|
|
static int reload_module(void)
|
|
{
|
|
struct ast_flags flags = { CONFIG_FLAG_NOREALTIME };
|
|
struct ast_config *cfg;
|
|
struct ast_variable *var;
|
|
|
|
if (!(cfg = ast_config_load("res_curl.conf", flags))) {
|
|
return 0;
|
|
} else if (cfg == CONFIG_STATUS_FILEINVALID) {
|
|
ast_log(LOG_WARNING, "res_curl.conf could not be parsed!\n");
|
|
return 0;
|
|
}
|
|
|
|
if (!(var = ast_variable_browse(cfg, "globals")) && !(var = ast_variable_browse(cfg, "global")) && !(var = ast_variable_browse(cfg, "general"))) {
|
|
ast_log(LOG_WARNING, "[globals] not found in res_curl.conf\n");
|
|
ast_config_destroy(cfg);
|
|
return 0;
|
|
}
|
|
|
|
for (; var; var = var->next) {
|
|
if (strncmp(var->name, "CURLOPT(", 8)) {
|
|
char name[256];
|
|
snprintf(name, sizeof(name), "CURLOPT(%s)", var->name);
|
|
pbx_builtin_setvar_helper(NULL, name, var->value);
|
|
} else {
|
|
pbx_builtin_setvar_helper(NULL, var->name, var->value);
|
|
}
|
|
}
|
|
ast_config_destroy(cfg);
|
|
return 0;
|
|
}
|
|
|
|
static int unload_module(void)
|
|
{
|
|
ast_config_engine_deregister(&curl_engine);
|
|
ast_verb(1, "res_config_curl unloaded.\n");
|
|
return 0;
|
|
}
|
|
|
|
static int load_module(void)
|
|
{
|
|
if (!ast_module_check("res_curl.so")) {
|
|
if (ast_load_resource("res_curl.so") != AST_MODULE_LOAD_SUCCESS) {
|
|
ast_log(LOG_ERROR, "Cannot load res_curl, so res_config_curl cannot be loaded\n");
|
|
return AST_MODULE_LOAD_DECLINE;
|
|
}
|
|
}
|
|
|
|
if (!ast_module_check("func_curl.so")) {
|
|
if (ast_load_resource("func_curl.so") != AST_MODULE_LOAD_SUCCESS) {
|
|
ast_log(LOG_ERROR, "Cannot load func_curl, so res_config_curl cannot be loaded\n");
|
|
return AST_MODULE_LOAD_DECLINE;
|
|
}
|
|
}
|
|
|
|
reload_module();
|
|
|
|
ast_config_engine_register(&curl_engine);
|
|
ast_verb(1, "res_config_curl loaded.\n");
|
|
return 0;
|
|
}
|
|
|
|
AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "Realtime Curl configuration",
|
|
.load = load_module,
|
|
.unload = unload_module,
|
|
.reload = reload_module,
|
|
.load_pri = AST_MODPRI_REALTIME_DRIVER,
|
|
);
|