a866a75900
This branch adds additional methods to dialplan functions, whereby the result buffers are now dynamic buffers, which can be expanded to the size of any result. No longer are variable substitutions limited to 4095 bytes of data. In addition, the common case of needing buffers much smaller than that will enable substitution to only take up the amount of memory actually needed. The existing variable substitution routines are still available, but users of those API calls should transition to using the dynamic-buffer APIs. Reviewboard: http://reviewboard.digium.com/r/174/ git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@191140 65c4cc65-6c06-0410-ace0-fbb531ad65f3
106 lines
2.7 KiB
C
106 lines
2.7 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 1999 - 2005, Digium, Inc.
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*
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* Mark Spencer <markster@digium.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 Function to lookup the callerid number, and see if it is blacklisted
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*
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* \author Mark Spencer <markster@digium.com>
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*
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* \ingroup functions
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*
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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 "asterisk/pbx.h"
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#include "asterisk/module.h"
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#include "asterisk/channel.h"
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#include "asterisk/astdb.h"
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/*** DOCUMENTATION
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<function name="BLACKLIST" language="en_US">
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<synopsis>
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Check if the callerid is on the blacklist.
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</synopsis>
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<syntax />
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<description>
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<para>Uses astdb to check if the Caller*ID is in family <literal>blacklist</literal>.
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Returns <literal>1</literal> or <literal>0</literal>.</para>
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</description>
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<see-also>
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<ref type="function">DB</ref>
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</see-also>
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</function>
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***/
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static int blacklist_read(struct ast_channel *chan, const char *cmd, char *data, char *buf, size_t len)
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{
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char blacklist[1];
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int bl = 0;
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if (chan->cid.cid_num) {
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if (!ast_db_get("blacklist", chan->cid.cid_num, blacklist, sizeof (blacklist)))
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bl = 1;
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}
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if (chan->cid.cid_name) {
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if (!ast_db_get("blacklist", chan->cid.cid_name, blacklist, sizeof (blacklist)))
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bl = 1;
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}
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snprintf(buf, len, "%d", bl);
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return 0;
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}
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static int blacklist_read2(struct ast_channel *chan, const char *cmd, char *data, struct ast_str **str, ssize_t len)
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{
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/* 2 bytes is a single integer, plus terminating null */
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if (ast_str_size(*str) - ast_str_strlen(*str) < 2) {
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if (len > ast_str_size(*str) || len == 0) {
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ast_str_make_space(str, len ? len : ast_str_strlen(*str) + 2);
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}
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}
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if (ast_str_size(*str) - ast_str_strlen(*str) >= 2) {
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int res = blacklist_read(chan, cmd, data, ast_str_buffer(*str) + ast_str_strlen(*str), 2);
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ast_str_update(*str);
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return res;
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}
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return -1;
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}
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static struct ast_custom_function blacklist_function = {
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.name = "BLACKLIST",
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.read = blacklist_read,
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.read2 = blacklist_read2,
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};
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static int unload_module(void)
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{
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return ast_custom_function_unregister(&blacklist_function);
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}
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static int load_module(void)
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{
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return ast_custom_function_register(&blacklist_function);
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}
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AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Look up Caller*ID name/number from blacklist database");
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