diff options
Diffstat (limited to '1.2-netsec/apps/app_zapscan.c')
| -rw-r--r-- | 1.2-netsec/apps/app_zapscan.c | 399 |
1 files changed, 399 insertions, 0 deletions
diff --git a/1.2-netsec/apps/app_zapscan.c b/1.2-netsec/apps/app_zapscan.c new file mode 100644 index 000000000..ed0c77977 --- /dev/null +++ b/1.2-netsec/apps/app_zapscan.c @@ -0,0 +1,399 @@ +/* + * Asterisk -- An open source telephony toolkit. + * + * Copyright (C) 1999 - 2005, Digium, Inc. + * + * Mark Spencer <markster@digium.com> + * + * Modified from app_zapbarge by David Troy <dave@toad.net> + * + * Special thanks to comphealth.com for sponsoring this + * GPL application. + * + * 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 Zap Scanner + * + * \ingroup applications + */ + +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <unistd.h> +#include <errno.h> +#include <sys/ioctl.h> + +#ifdef __linux__ +#include <linux/zaptel.h> +#else +#include <zaptel.h> +#endif /* __linux__ */ + +#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/module.h" +#include "asterisk/config.h" +#include "asterisk/app.h" +#include "asterisk/options.h" +#include "asterisk/utils.h" +#include "asterisk/cli.h" +#include "asterisk/say.h" + +static char *tdesc = "Scan Zap channels application"; + +static char *app = "ZapScan"; + +static char *synopsis = "Scan Zap channels to monitor calls"; + +static char *descrip = +" ZapScan([group]) allows a call center manager to monitor Zap channels in\n" +"a convenient way. Use '#' to select the next channel and use '*' to exit\n" +"Limit scanning to a channel GROUP by setting the option group argument.\n"; + +STANDARD_LOCAL_USER; + +LOCAL_USER_DECL; + + +#define CONF_SIZE 160 + +static struct ast_channel *get_zap_channel_locked(int num) { + char name[80]; + + snprintf(name,sizeof(name),"Zap/%d-1",num); + return ast_get_channel_by_name_locked(name); +} + +static int careful_write(int fd, unsigned char *data, int len) +{ + int res; + while(len) { + res = write(fd, data, len); + if (res < 1) { + if (errno != EAGAIN) { + ast_log(LOG_WARNING, "Failed to write audio data to conference: %s\n", strerror(errno)); + return -1; + } else + return 0; + } + len -= res; + data += res; + } + return 0; +} + +static int conf_run(struct ast_channel *chan, int confno, int confflags) +{ + int fd; + struct zt_confinfo ztc; + struct ast_frame *f; + struct ast_channel *c; + struct ast_frame fr; + int outfd; + int ms; + int nfds; + int res; + int flags; + int retryzap; + int origfd; + int ret = -1; + char input[4]; + int ic=0; + + ZT_BUFFERINFO bi; + char __buf[CONF_SIZE + AST_FRIENDLY_OFFSET]; + char *buf = __buf + AST_FRIENDLY_OFFSET; + + /* Set it into U-law mode (write) */ + if (ast_set_write_format(chan, AST_FORMAT_ULAW) < 0) { + ast_log(LOG_WARNING, "Unable to set '%s' to write ulaw mode\n", chan->name); + goto outrun; + } + + /* Set it into U-law mode (read) */ + if (ast_set_read_format(chan, AST_FORMAT_ULAW) < 0) { + ast_log(LOG_WARNING, "Unable to set '%s' to read ulaw mode\n", chan->name); + goto outrun; + } + ast_indicate(chan, -1); + retryzap = strcasecmp(chan->type, "Zap"); + zapretry: + origfd = chan->fds[0]; + if (retryzap) { + fd = open("/dev/zap/pseudo", O_RDWR); + if (fd < 0) { + ast_log(LOG_WARNING, "Unable to open pseudo channel: %s\n", strerror(errno)); + goto outrun; + } + /* Make non-blocking */ + flags = fcntl(fd, F_GETFL); + if (flags < 0) { + ast_log(LOG_WARNING, "Unable to get flags: %s\n", strerror(errno)); + close(fd); + goto outrun; + } + if (fcntl(fd, F_SETFL, flags | O_NONBLOCK)) { + ast_log(LOG_WARNING, "Unable to set flags: %s\n", strerror(errno)); + close(fd); + goto outrun; + } + /* Setup buffering information */ + memset(&bi, 0, sizeof(bi)); + bi.bufsize = CONF_SIZE; + bi.txbufpolicy = ZT_POLICY_IMMEDIATE; + bi.rxbufpolicy = ZT_POLICY_IMMEDIATE; + bi.numbufs = 4; + if (ioctl(fd, ZT_SET_BUFINFO, &bi)) { + ast_log(LOG_WARNING, "Unable to set buffering information: %s\n", strerror(errno)); + close(fd); + goto outrun; + } + nfds = 1; + } else { + /* XXX Make sure we're not running on a pseudo channel XXX */ + fd = chan->fds[0]; + nfds = 0; + } + memset(&ztc, 0, sizeof(ztc)); + /* Check to see if we're in a conference... */ + ztc.chan = 0; + if (ioctl(fd, ZT_GETCONF, &ztc)) { + ast_log(LOG_WARNING, "Error getting conference\n"); + close(fd); + goto outrun; + } + if (ztc.confmode) { + /* Whoa, already in a conference... Retry... */ + if (!retryzap) { + ast_log(LOG_DEBUG, "Zap channel is in a conference already, retrying with pseudo\n"); + retryzap = 1; + goto zapretry; + } + } + memset(&ztc, 0, sizeof(ztc)); + /* Add us to the conference */ + ztc.chan = 0; + ztc.confno = confno; + ztc.confmode = ZT_CONF_MONITORBOTH; + + if (ioctl(fd, ZT_SETCONF, &ztc)) { + ast_log(LOG_WARNING, "Error setting conference\n"); + close(fd); + goto outrun; + } + ast_log(LOG_DEBUG, "Placed channel %s in ZAP channel %d monitor\n", chan->name, confno); + + for(;;) { + outfd = -1; + ms = -1; + c = ast_waitfor_nandfds(&chan, 1, &fd, nfds, NULL, &outfd, &ms); + if (c) { + if (c->fds[0] != origfd) { + if (retryzap) { + /* Kill old pseudo */ + close(fd); + } + ast_log(LOG_DEBUG, "Ooh, something swapped out under us, starting over\n"); + retryzap = 0; + goto zapretry; + } + f = ast_read(c); + if (!f) + break; + if(f->frametype == AST_FRAME_DTMF) { + if(f->subclass == '#') { + ret = 0; + break; + } + else if (f->subclass == '*') { + ret = -1; + break; + + } + else { + input[ic++] = f->subclass; + } + if(ic == 3) { + input[ic++] = '\0'; + ic=0; + ret = atoi(input); + ast_verbose(VERBOSE_PREFIX_3 "Zapscan: change channel to %d\n",ret); + break; + } + } + + if (fd != chan->fds[0]) { + if (f->frametype == AST_FRAME_VOICE) { + if (f->subclass == AST_FORMAT_ULAW) { + /* Carefully write */ + careful_write(fd, f->data, f->datalen); + } else + ast_log(LOG_WARNING, "Huh? Got a non-ulaw (%d) frame in the conference\n", f->subclass); + } + } + ast_frfree(f); + } else if (outfd > -1) { + res = read(outfd, buf, CONF_SIZE); + if (res > 0) { + memset(&fr, 0, sizeof(fr)); + fr.frametype = AST_FRAME_VOICE; + fr.subclass = AST_FORMAT_ULAW; + fr.datalen = res; + fr.samples = res; + fr.data = buf; + fr.offset = AST_FRIENDLY_OFFSET; + if (ast_write(chan, &fr) < 0) { + ast_log(LOG_WARNING, "Unable to write frame to channel: %s\n", strerror(errno)); + /* break; */ + } + } else + ast_log(LOG_WARNING, "Failed to read frame: %s\n", strerror(errno)); + } + } + if (fd != chan->fds[0]) + close(fd); + else { + /* Take out of conference */ + /* Add us to the conference */ + ztc.chan = 0; + ztc.confno = 0; + ztc.confmode = 0; + if (ioctl(fd, ZT_SETCONF, &ztc)) { + ast_log(LOG_WARNING, "Error setting conference\n"); + } + } + + outrun: + + return ret; +} + +static int conf_exec(struct ast_channel *chan, void *data) +{ + int res=-1; + struct localuser *u; + int confflags = 0; + int confno = 0; + char confstr[80] = "", *tmp = NULL; + struct ast_channel *tempchan = NULL, *lastchan = NULL,*ichan = NULL; + struct ast_frame *f; + char *mygroup; + char *desired_group; + int input=0,search_group=0; + + LOCAL_USER_ADD(u); + + if (chan->_state != AST_STATE_UP) + ast_answer(chan); + + desired_group = ast_strdupa((char *) data); + if(!ast_strlen_zero(desired_group)) { + ast_verbose(VERBOSE_PREFIX_3 "Scanning for group %s\n", desired_group); + search_group = 1; + } + + for (;;) { + if (ast_waitfor(chan, 100) < 0) + break; + + f = ast_read(chan); + if (!f) + break; + if ((f->frametype == AST_FRAME_DTMF) && (f->subclass == '*')) { + ast_frfree(f); + break; + } + ast_frfree(f); + ichan = NULL; + if(input) { + ichan = get_zap_channel_locked(input); + input = 0; + } + + tempchan = ichan ? ichan : ast_channel_walk_locked(tempchan); + + if ( !tempchan && !lastchan ) + break; + + if (tempchan && search_group) { + if((mygroup = pbx_builtin_getvar_helper(tempchan, "GROUP")) && (!strcmp(mygroup, desired_group))) { + ast_verbose(VERBOSE_PREFIX_3 "Found Matching Channel %s in group %s\n", tempchan->name, desired_group); + } else { + ast_mutex_unlock(&tempchan->lock); + lastchan = tempchan; + continue; + } + } + if ( tempchan && tempchan->type && (!strcmp(tempchan->type, "Zap")) && (tempchan != chan) ) { + ast_verbose(VERBOSE_PREFIX_3 "Zap channel %s is in-use, monitoring...\n", tempchan->name); + ast_copy_string(confstr, tempchan->name, sizeof(confstr)); + ast_mutex_unlock(&tempchan->lock); + if ((tmp = strchr(confstr,'-'))) { + *tmp = '\0'; + } + confno = atoi(strchr(confstr,'/') + 1); + ast_stopstream(chan); + ast_say_number(chan, confno, AST_DIGIT_ANY, chan->language, (char *) NULL); + res = conf_run(chan, confno, confflags); + if (res<0) break; + input = res; + } else if (tempchan) + ast_mutex_unlock(&tempchan->lock); + lastchan = tempchan; + } + LOCAL_USER_REMOVE(u); + return 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, conf_exec, synopsis, descrip); +} + +char *description(void) +{ + return tdesc; +} + +int usecount(void) +{ + int res; + STANDARD_USECOUNT(res); + return res; +} + +char *key() +{ + return ASTERISK_GPL_KEY; +} + |