diff options
author | tilghman <tilghman@f38db490-d61c-443f-a65b-d21fe96a405b> | 2008-06-03 23:17:33 +0000 |
---|---|---|
committer | tilghman <tilghman@f38db490-d61c-443f-a65b-d21fe96a405b> | 2008-06-03 23:17:33 +0000 |
commit | e8d263f34437e0d0fbf56b3d056f43c4b4d04338 (patch) | |
tree | a8c2515fd1658d221eb08b60bc5cc3cb95ced780 /funcs | |
parent | 7abff700d413ba3153c76b50bc31b256eb0c50db (diff) |
Add a function, CHANNELS(), which retrieves a list of all active channels.
(closes issue #11330)
Reported by: rain
Patches:
func_channel-channel_list_function.diff uploaded by rain (license 327)
(with some additional changes by me, mostly to meet coding guidelines)
git-svn-id: http://svn.digium.com/svn/asterisk/trunk@120230 f38db490-d61c-443f-a65b-d21fe96a405b
Diffstat (limited to 'funcs')
-rw-r--r-- | funcs/func_channel.c | 73 |
1 files changed, 69 insertions, 4 deletions
diff --git a/funcs/func_channel.c b/funcs/func_channel.c index 8388d7fa6..6a036139f 100644 --- a/funcs/func_channel.c +++ b/funcs/func_channel.c @@ -16,9 +16,10 @@ /*! \file * - * \brief Channel info dialplan function + * \brief Channel info dialplan functions * * \author Kevin P. Fleming <kpfleming@digium.com> + * \author Ben Winslow * * \ingroup functions */ @@ -27,6 +28,8 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$") +#include <regex.h> + #include "asterisk/module.h" #include "asterisk/channel.h" #include "asterisk/pbx.h" @@ -222,14 +225,76 @@ static struct ast_custom_function channel_function = { .write = func_channel_write, }; +static int func_channels_read(struct ast_channel *chan, const char *function, char *data, char *buf, size_t maxlen) +{ + struct ast_channel *c = NULL; + regex_t re; + int res; + size_t buflen = 0; + + buf[0] = '\0'; + + if (!ast_strlen_zero(data)) { + if ((res = regcomp(&re, data, REG_EXTENDED | REG_ICASE | REG_NOSUB))) { + regerror(res, &re, buf, maxlen); + ast_log(LOG_WARNING, "Error compiling regular expression for %s(%s): %s\n", function, data, buf); + return -1; + } + } + + for (c = ast_channel_walk_locked(NULL); c; ast_channel_unlock(c), c = ast_channel_walk_locked(c)) { + if (ast_strlen_zero(data) || regexec(&re, c->name, 0, NULL, 0) == 0) { + size_t namelen = strlen(c->name); + if (buflen + namelen + (ast_strlen_zero(buf) ? 0 : 1) + 1 < maxlen) { + if (!ast_strlen_zero(buf)) { + strcat(buf, " "); + buflen++; + } + strcat(buf, c->name); + buflen += namelen; + } else { + ast_log(LOG_WARNING, "Number of channels exceeds the available buffer space. Output will be truncated!\n"); + } + } + } + + if (!ast_strlen_zero(data)) { + regfree(&re); + } + + return 0; +} + +static struct ast_custom_function channels_function = { + .name = "CHANNELS", + .synopsis = "Gets the list of channels, optionally filtering by a regular expression.", + .syntax = "CHANNEL([regular expression])", + .desc = +"Gets the list of channels, optionally filtering by a regular expression. If\n" +"no argument is provided, all known channels are returned. The regular\n" +"expression must correspond to the POSIX.2 specification, as shown in\n" +"regex(7). The list returned will be space-delimited.\n", + .read = func_channels_read, +}; + static int unload_module(void) { - return ast_custom_function_unregister(&channel_function); + int res = 0; + + res |= ast_custom_function_unregister(&channel_function); + res |= ast_custom_function_unregister(&channels_function); + + return res; } static int load_module(void) { - return ast_custom_function_register(&channel_function); + int res = 0; + + res |= ast_custom_function_register(&channel_function); + res |= ast_custom_function_register(&channels_function); + + return res; } -AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Channel information dialplan function"); +AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Channel information dialplan functions"); |