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-rw-r--r--1.2-netsec/apps/app_chanspy.c587
1 files changed, 587 insertions, 0 deletions
diff --git a/1.2-netsec/apps/app_chanspy.c b/1.2-netsec/apps/app_chanspy.c
new file mode 100644
index 000000000..299c58efc
--- /dev/null
+++ b/1.2-netsec/apps/app_chanspy.c
@@ -0,0 +1,587 @@
+/*
+ * Asterisk -- An open source telephony toolkit.
+ *
+ * Copyright (C) 2005 Anthony Minessale II (anthmct@yahoo.com)
+ *
+ * Disclaimed to Digium
+ *
+ * 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.
+ *
+ * This program is free software, distributed under the terms of
+ * the GNU General Public License Version 2. See the LICENSE file
+ * at the top of the source tree.
+ */
+
+/*! \file
+ * \brief ChanSpy: Listen in on any channel.
+ *
+ * \ingroup applications
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <ctype.h>
+
+#include "asterisk.h"
+
+ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
+
+#include "asterisk/file.h"
+#include "asterisk/logger.h"
+#include "asterisk/channel.h"
+#include "asterisk/chanspy.h"
+#include "asterisk/features.h"
+#include "asterisk/options.h"
+#include "asterisk/app.h"
+#include "asterisk/utils.h"
+#include "asterisk/say.h"
+#include "asterisk/pbx.h"
+#include "asterisk/translate.h"
+#include "asterisk/module.h"
+#include "asterisk/lock.h"
+
+AST_MUTEX_DEFINE_STATIC(modlock);
+
+#define AST_NAME_STRLEN 256
+#define ALL_DONE(u, ret) LOCAL_USER_REMOVE(u); return ret;
+#define get_volfactor(x) x ? ((x > 0) ? (1 << x) : ((1 << abs(x)) * -1)) : 0
+
+static const char *synopsis = "Listen to the audio of an active channel\n";
+static const char *app = "ChanSpy";
+static const char *desc =
+" ChanSpy([chanprefix][|options]): This application is used to listen to the\n"
+"audio from an active Asterisk channel. This includes the audio coming in and\n"
+"out of the channel being spied on. If the 'chanprefix' parameter is specified,\n"
+"only channels beginning with this string will be spied upon.\n"
+" While Spying, the following actions may be performed:\n"
+" - Dialing # cycles the volume level.\n"
+" - Dialing * will stop spying and look for another channel to spy on.\n"
+" - Dialing a series of digits followed by # builds a channel name to append\n"
+" to 'chanprefix'. For example, executing ChanSpy(Agent) and then dialing\n"
+" the digits '1234#' while spying will begin spying on the channel,\n"
+" 'Agent/1234'.\n"
+" Options:\n"
+" b - Only spy on channels involved in a bridged call.\n"
+" g(grp) - Match only channels where their ${SPYGROUP} variable is set to\n"
+" 'grp'.\n"
+" q - Don't play a beep when beginning to spy on a channel.\n"
+" r[(basename)] - Record the session to the monitor spool directory. An\n"
+" optional base for the filename may be specified. The\n"
+" default is 'chanspy'.\n"
+" v([value]) - Adjust the initial volume in the range from -4 to 4. A\n"
+" negative value refers to a quieter setting.\n"
+;
+
+static const char *chanspy_spy_type = "ChanSpy";
+
+enum {
+ OPTION_QUIET = (1 << 0), /* Quiet, no announcement */
+ OPTION_BRIDGED = (1 << 1), /* Only look at bridged calls */
+ OPTION_VOLUME = (1 << 2), /* Specify initial volume */
+ OPTION_GROUP = (1 << 3), /* Only look at channels in group */
+ OPTION_RECORD = (1 << 4), /* Record */
+} chanspy_opt_flags;
+
+enum {
+ OPT_ARG_VOLUME = 0,
+ OPT_ARG_GROUP,
+ OPT_ARG_RECORD,
+ OPT_ARG_ARRAY_SIZE,
+} chanspy_opt_args;
+
+AST_APP_OPTIONS(chanspy_opts, {
+ AST_APP_OPTION('q', OPTION_QUIET),
+ AST_APP_OPTION('b', OPTION_BRIDGED),
+ AST_APP_OPTION_ARG('v', OPTION_VOLUME, OPT_ARG_VOLUME),
+ AST_APP_OPTION_ARG('g', OPTION_GROUP, OPT_ARG_GROUP),
+ AST_APP_OPTION_ARG('r', OPTION_RECORD, OPT_ARG_RECORD),
+});
+
+STANDARD_LOCAL_USER;
+LOCAL_USER_DECL;
+
+struct chanspy_translation_helper {
+ /* spy data */
+ struct ast_channel_spy spy;
+ int fd;
+ int volfactor;
+};
+
+static struct ast_channel *local_channel_walk(struct ast_channel *chan)
+{
+ struct ast_channel *ret;
+ ast_mutex_lock(&modlock);
+ if ((ret = ast_channel_walk_locked(chan))) {
+ ast_mutex_unlock(&ret->lock);
+ }
+ ast_mutex_unlock(&modlock);
+ return ret;
+}
+
+static struct ast_channel *local_get_channel_begin_name(char *name)
+{
+ struct ast_channel *chan, *ret = NULL;
+ ast_mutex_lock(&modlock);
+ chan = local_channel_walk(NULL);
+ while (chan) {
+ if (!strncmp(chan->name, name, strlen(name))) {
+ ret = chan;
+ break;
+ }
+ chan = local_channel_walk(chan);
+ }
+ ast_mutex_unlock(&modlock);
+
+ return ret;
+}
+
+static void *spy_alloc(struct ast_channel *chan, void *data)
+{
+ /* just store the data pointer in the channel structure */
+ return data;
+}
+
+static void spy_release(struct ast_channel *chan, void *data)
+{
+ /* nothing to do */
+}
+
+static int spy_generate(struct ast_channel *chan, void *data, int len, int samples)
+{
+ struct chanspy_translation_helper *csth = data;
+ struct ast_frame *f;
+
+ if (csth->spy.status != CHANSPY_RUNNING)
+ /* Channel is already gone more than likely */
+ return -1;
+
+ ast_mutex_lock(&csth->spy.lock);
+ f = ast_channel_spy_read_frame(&csth->spy, samples);
+ ast_mutex_unlock(&csth->spy.lock);
+
+ if (!f)
+ return 0;
+
+ if (ast_write(chan, f)) {
+ ast_frfree(f);
+ return -1;
+ }
+
+ if (csth->fd)
+ write(csth->fd, f->data, f->datalen);
+
+ ast_frfree(f);
+
+ return 0;
+}
+
+
+static struct ast_generator spygen = {
+ .alloc = spy_alloc,
+ .release = spy_release,
+ .generate = spy_generate,
+};
+
+static int start_spying(struct ast_channel *chan, struct ast_channel *spychan, struct ast_channel_spy *spy)
+{
+ int res;
+ struct ast_channel *peer;
+
+ ast_log(LOG_NOTICE, "Attaching %s to %s\n", spychan->name, chan->name);
+
+ ast_mutex_lock(&chan->lock);
+ res = ast_channel_spy_add(chan, spy);
+ ast_mutex_unlock(&chan->lock);
+
+ if (!res && ast_test_flag(chan, AST_FLAG_NBRIDGE) && (peer = ast_bridged_channel(chan))) {
+ ast_softhangup(peer, AST_SOFTHANGUP_UNBRIDGE);
+ }
+
+ return res;
+}
+
+static void stop_spying(struct ast_channel *chan, struct ast_channel_spy *spy)
+{
+ /* If our status has changed to DONE, then the channel we're spying on is gone....
+ DON'T TOUCH IT!!! RUN AWAY!!! */
+ if (spy->status == CHANSPY_DONE)
+ return;
+
+ if (!chan)
+ return;
+
+ ast_mutex_lock(&chan->lock);
+ ast_channel_spy_remove(chan, spy);
+ ast_mutex_unlock(&chan->lock);
+};
+
+/* Map 'volume' levels from -4 through +4 into
+ decibel (dB) settings for channel drivers
+*/
+static signed char volfactor_map[] = {
+ -24,
+ -18,
+ -12,
+ -6,
+ 0,
+ 6,
+ 12,
+ 18,
+ 24,
+};
+
+/* attempt to set the desired gain adjustment via the channel driver;
+ if successful, clear it out of the csth structure so the
+ generator will not attempt to do the adjustment itself
+*/
+static void set_volume(struct ast_channel *chan, struct chanspy_translation_helper *csth)
+{
+ signed char volume_adjust = volfactor_map[csth->volfactor + 4];
+
+ if (!ast_channel_setoption(chan, AST_OPTION_TXGAIN, &volume_adjust, sizeof(volume_adjust), 0))
+ csth->volfactor = 0;
+}
+
+static int channel_spy(struct ast_channel *chan, struct ast_channel *spyee, int *volfactor, int fd)
+{
+ struct chanspy_translation_helper csth;
+ int running, res = 0, x = 0;
+ char inp[24];
+ char *name=NULL;
+ struct ast_frame *f;
+
+ running = (chan && !ast_check_hangup(chan) && spyee && !ast_check_hangup(spyee));
+
+ if (running) {
+ memset(inp, 0, sizeof(inp));
+ name = ast_strdupa(spyee->name);
+ if (option_verbose >= 2)
+ ast_verbose(VERBOSE_PREFIX_2 "Spying on channel %s\n", name);
+
+ memset(&csth, 0, sizeof(csth));
+ ast_set_flag(&csth.spy, CHANSPY_FORMAT_AUDIO);
+ ast_set_flag(&csth.spy, CHANSPY_TRIGGER_NONE);
+ ast_set_flag(&csth.spy, CHANSPY_MIXAUDIO);
+ csth.spy.type = chanspy_spy_type;
+ csth.spy.status = CHANSPY_RUNNING;
+ csth.spy.read_queue.format = AST_FORMAT_SLINEAR;
+ csth.spy.write_queue.format = AST_FORMAT_SLINEAR;
+ ast_mutex_init(&csth.spy.lock);
+ csth.volfactor = *volfactor;
+ set_volume(chan, &csth);
+ csth.spy.read_vol_adjustment = csth.volfactor;
+ csth.spy.write_vol_adjustment = csth.volfactor;
+ csth.fd = fd;
+
+ if (start_spying(spyee, chan, &csth.spy))
+ running = 0;
+ }
+
+ if (running) {
+ running = 1;
+ ast_activate_generator(chan, &spygen, &csth);
+
+ while (csth.spy.status == CHANSPY_RUNNING &&
+ chan && !ast_check_hangup(chan) &&
+ spyee &&
+ !ast_check_hangup(spyee) &&
+ running == 1 &&
+ (res = ast_waitfor(chan, -1) > -1)) {
+ if ((f = ast_read(chan))) {
+ res = 0;
+ if (f->frametype == AST_FRAME_DTMF) {
+ res = f->subclass;
+ }
+ ast_frfree(f);
+ if (!res) {
+ continue;
+ }
+ } else {
+ break;
+ }
+ if (x == sizeof(inp)) {
+ x = 0;
+ }
+ if (res < 0) {
+ running = -1;
+ }
+ if (res == 0) {
+ continue;
+ } else if (res == '*') {
+ running = 0;
+ } else if (res == '#') {
+ if (!ast_strlen_zero(inp)) {
+ running = x ? atoi(inp) : -1;
+ break;
+ } else {
+ (*volfactor)++;
+ if (*volfactor > 4) {
+ *volfactor = -4;
+ }
+ if (option_verbose > 2) {
+ ast_verbose(VERBOSE_PREFIX_3 "Setting spy volume on %s to %d\n", chan->name, *volfactor);
+ }
+ csth.volfactor = *volfactor;
+ set_volume(chan, &csth);
+ csth.spy.read_vol_adjustment = csth.volfactor;
+ csth.spy.write_vol_adjustment = csth.volfactor;
+ }
+ } else if (res >= 48 && res <= 57) {
+ inp[x++] = res;
+ }
+ }
+ ast_deactivate_generator(chan);
+ stop_spying(spyee, &csth.spy);
+
+ if (option_verbose >= 2) {
+ ast_verbose(VERBOSE_PREFIX_2 "Done Spying on channel %s\n", name);
+ }
+ } else {
+ running = 0;
+ }
+
+ ast_mutex_destroy(&csth.spy.lock);
+
+ return running;
+}
+
+static int chanspy_exec(struct ast_channel *chan, void *data)
+{
+ struct localuser *u;
+ struct ast_channel *peer=NULL, *prev=NULL;
+ char name[AST_NAME_STRLEN],
+ peer_name[AST_NAME_STRLEN + 5],
+ *args,
+ *ptr = NULL,
+ *options = NULL,
+ *spec = NULL,
+ *argv[5],
+ *mygroup = NULL,
+ *recbase = NULL;
+ int res = -1,
+ volfactor = 0,
+ silent = 0,
+ argc = 0,
+ bronly = 0,
+ chosen = 0,
+ count=0,
+ waitms = 100,
+ num = 0,
+ oldrf = 0,
+ oldwf = 0,
+ fd = 0;
+ struct ast_flags flags;
+ signed char zero_volume = 0;
+
+ if (!(args = ast_strdupa((char *)data))) {
+ ast_log(LOG_ERROR, "Out of memory!\n");
+ return -1;
+ }
+
+ LOCAL_USER_ADD(u);
+
+ oldrf = chan->readformat;
+ oldwf = chan->writeformat;
+ if (ast_set_read_format(chan, AST_FORMAT_SLINEAR) < 0) {
+ ast_log(LOG_ERROR, "Could Not Set Read Format.\n");
+ LOCAL_USER_REMOVE(u);
+ return -1;
+ }
+
+ if (ast_set_write_format(chan, AST_FORMAT_SLINEAR) < 0) {
+ ast_log(LOG_ERROR, "Could Not Set Write Format.\n");
+ LOCAL_USER_REMOVE(u);
+ return -1;
+ }
+
+ ast_answer(chan);
+
+ ast_set_flag(chan, AST_FLAG_SPYING); /* so nobody can spy on us while we are spying */
+
+ if ((argc = ast_app_separate_args(args, '|', argv, sizeof(argv) / sizeof(argv[0])))) {
+ spec = argv[0];
+ if ( argc > 1) {
+ options = argv[1];
+ }
+ if (ast_strlen_zero(spec) || !strcmp(spec, "all")) {
+ spec = NULL;
+ }
+ }
+
+ if (options) {
+ char *opts[OPT_ARG_ARRAY_SIZE];
+ ast_app_parse_options(chanspy_opts, &flags, opts, options);
+ if (ast_test_flag(&flags, OPTION_GROUP)) {
+ mygroup = opts[1];
+ }
+ if (ast_test_flag(&flags, OPTION_RECORD)) {
+ if (!(recbase = opts[2])) {
+ recbase = "chanspy";
+ }
+ }
+ silent = ast_test_flag(&flags, OPTION_QUIET);
+ bronly = ast_test_flag(&flags, OPTION_BRIDGED);
+ if (ast_test_flag(&flags, OPTION_VOLUME) && opts[1]) {
+ int vol;
+
+ if ((sscanf(opts[0], "%d", &vol) != 1) || (vol > 4) || (vol < -4))
+ ast_log(LOG_NOTICE, "Volume factor must be a number between -4 and 4\n");
+ else
+ volfactor = vol;
+ }
+ }
+
+ if (recbase) {
+ char filename[512];
+ snprintf(filename,sizeof(filename),"%s/%s.%d.raw",ast_config_AST_MONITOR_DIR, recbase, (int)time(NULL));
+ if ((fd = open(filename, O_CREAT | O_WRONLY, O_TRUNC, 0644)) <= 0) {
+ ast_log(LOG_WARNING, "Cannot open %s for recording\n", filename);
+ fd = 0;
+ }
+ }
+
+ for(;;) {
+ if (!silent) {
+ res = ast_streamfile(chan, "beep", chan->language);
+ if (!res)
+ res = ast_waitstream(chan, "");
+ if (res < 0) {
+ ast_clear_flag(chan, AST_FLAG_SPYING);
+ break;
+ }
+ }
+
+ count = 0;
+ res = ast_waitfordigit(chan, waitms);
+ if (res < 0) {
+ ast_clear_flag(chan, AST_FLAG_SPYING);
+ break;
+ }
+
+ peer = local_channel_walk(NULL);
+ prev=NULL;
+ while(peer) {
+ if (peer != chan) {
+ char *group = NULL;
+ int igrp = 1;
+
+ if (peer == prev && !chosen) {
+ break;
+ }
+ chosen = 0;
+ group = pbx_builtin_getvar_helper(peer, "SPYGROUP");
+ if (mygroup) {
+ if (!group || strcmp(mygroup, group)) {
+ igrp = 0;
+ }
+ }
+
+ if (igrp && (!spec || ((strlen(spec) <= strlen(peer->name) &&
+ !strncasecmp(peer->name, spec, strlen(spec)))))) {
+ if (peer && (!bronly || ast_bridged_channel(peer)) &&
+ !ast_check_hangup(peer) && !ast_test_flag(peer, AST_FLAG_SPYING)) {
+ int x = 0;
+ strncpy(peer_name, "spy-", 5);
+ strncpy(peer_name + strlen(peer_name), peer->name, AST_NAME_STRLEN);
+ ptr = strchr(peer_name, '/');
+ *ptr = '\0';
+ ptr++;
+ for (x = 0 ; x < strlen(peer_name) ; x++) {
+ if (peer_name[x] == '/') {
+ break;
+ }
+ peer_name[x] = tolower(peer_name[x]);
+ }
+
+ if (!silent) {
+ if (ast_fileexists(peer_name, NULL, NULL) != -1) {
+ res = ast_streamfile(chan, peer_name, chan->language);
+ if (!res)
+ res = ast_waitstream(chan, "");
+ if (res)
+ break;
+ } else
+ res = ast_say_character_str(chan, peer_name, "", chan->language);
+ if ((num=atoi(ptr)))
+ ast_say_digits(chan, atoi(ptr), "", chan->language);
+ }
+ count++;
+ prev = peer;
+ res = channel_spy(chan, peer, &volfactor, fd);
+ if (res == -1) {
+ break;
+ } else if (res > 1 && spec) {
+ snprintf(name, AST_NAME_STRLEN, "%s/%d", spec, res);
+ if ((peer = local_get_channel_begin_name(name))) {
+ chosen = 1;
+ }
+ continue;
+ }
+ }
+ }
+ }
+ if ((peer = local_channel_walk(peer)) == NULL) {
+ break;
+ }
+ }
+ waitms = count ? 100 : 5000;
+ }
+
+
+ if (fd > 0) {
+ close(fd);
+ }
+
+ if (oldrf && ast_set_read_format(chan, oldrf) < 0) {
+ ast_log(LOG_ERROR, "Could Not Set Read Format.\n");
+ }
+
+ if (oldwf && ast_set_write_format(chan, oldwf) < 0) {
+ ast_log(LOG_ERROR, "Could Not Set Write Format.\n");
+ }
+
+ ast_clear_flag(chan, AST_FLAG_SPYING);
+
+ ast_channel_setoption(chan, AST_OPTION_TXGAIN, &zero_volume, sizeof(zero_volume), 0);
+
+ ALL_DONE(u, res);
+}
+
+int unload_module(void)
+{
+ int res;
+
+ res = ast_unregister_application(app);
+
+ STANDARD_HANGUP_LOCALUSERS;
+
+ return res;
+}
+
+int load_module(void)
+{
+ return ast_register_application(app, chanspy_exec, synopsis, desc);
+}
+
+char *description(void)
+{
+ return (char *) synopsis;
+}
+
+int usecount(void)
+{
+ int res;
+ STANDARD_USECOUNT(res);
+ return res;
+}
+
+char *key()
+{
+ return ASTERISK_GPL_KEY;
+}
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