Goodbye Zaptel, hello DAHDI. Removes Zaptel driver support with DAHDI. Configuration file and dialplan backwards compatability has been put in place where appropiate. Release announcement to follow.

git-svn-id: http://svn.digium.com/svn/asterisk/branches/1.6.0@123332 f38db490-d61c-443f-a65b-d21fe96a405b

1 files changed, 363 insertions, 0 deletions

diff --git a/apps/app_dahdiscan.c b/apps/app_dahdiscan.c
new file mode 100644
index 000000000..d7b100eac
--- /dev/null
+++ b/apps/app_dahdiscan.c
@@ -0,0 +1,363 @@
+/*
+ * Asterisk -- An open source telephony toolkit.
+ *
+ * Copyright (C) 1999 - 2005, Digium, Inc.
+ *
+ * Mark Spencer <markster@digium.com>
+ *
+ * Modified from app_dahdibarge 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 DAHDI Scanner
+ *
+ * \author Mark Spencer <markster@digium.com>
+ *
+ * \ingroup applications
+ */
+
+/*** MODULEINFO
+	<depend>dahdi</depend>
+ ***/
+
+#include "asterisk.h"
+
+ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
+
+#include "asterisk/dahdi.h"
+
+#include "asterisk/lock.h"
+#include "asterisk/file.h"
+#include "asterisk/channel.h"
+#include "asterisk/pbx.h"
+#include "asterisk/module.h"
+#include "asterisk/config.h"
+#include "asterisk/app.h"
+#include "asterisk/utils.h"
+#include "asterisk/cli.h"
+#include "asterisk/say.h"
+
+static char *app = "DAHDIScan";
+
+static char *synopsis = "Scan DAHDI channels to monitor calls";
+
+static char *descrip =
+"  DAHDIScan([group]) allows a call center manager to monitor DAHDI 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";
+
+
+#define CONF_SIZE 160
+
+static struct ast_channel *get_dahdi_channel_locked(int num) {
+	char name[80];
+	
+	snprintf(name, sizeof(name), "%s/%d-1", dahdi_chan_name, 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 dahdi_confinfo dahdic;
+	struct ast_frame *f;
+	struct ast_channel *c;
+	struct ast_frame fr;
+	int outfd;
+	int ms;
+	int nfds;
+	int res;
+	int flags;
+	int retrydahdi;
+	int origfd;
+	int ret = -1;
+	char input[4];
+	int ic=0;
+	
+	DAHDI_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);
+	retrydahdi = strcasecmp(chan->tech->type, "DAHDI");
+ dahdiretry:
+	origfd = chan->fds[0];
+	if (retrydahdi) {
+		fd = open("/dev/dahdi/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 = DAHDI_POLICY_IMMEDIATE;
+		bi.rxbufpolicy = DAHDI_POLICY_IMMEDIATE;
+		bi.numbufs = 4;
+		if (ioctl(fd, DAHDI_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(&dahdic, 0, sizeof(dahdic));
+	/* Check to see if we're in a conference... */
+        dahdic.chan = 0;
+        if (ioctl(fd, DAHDI_GETCONF, &dahdic)) {
+			ast_log(LOG_WARNING, "Error getting conference\n");
+			close(fd);
+			goto outrun;
+        }
+        if (dahdic.confmode) {
+			/* Whoa, already in a conference...  Retry... */
+			if (!retrydahdi) {
+				ast_debug(1, "DAHDI channel is in a conference already, retrying with pseudo\n");
+				retrydahdi = 1;
+				goto dahdiretry;
+			}
+        }
+        memset(&dahdic, 0, sizeof(dahdic));
+        /* Add us to the conference */
+        dahdic.chan = 0;
+        dahdic.confno = confno;
+        dahdic.confmode = DAHDI_CONF_MONITORBOTH;
+		
+        if (ioctl(fd, DAHDI_SETCONF, &dahdic)) {
+                ast_log(LOG_WARNING, "Error setting conference\n");
+                close(fd);
+                goto outrun;
+        }
+	ast_debug(1, "Placed channel %s in DAHDI 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 (retrydahdi) {
+						/* Kill old pseudo */
+						close(fd);
+					}
+					ast_debug(1, "Ooh, something swapped out under us, starting over\n");
+					retrydahdi = 0;
+                                goto dahdiretry;
+				}
+				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_verb(3, "DAHDIscan: 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 (f)
+		ast_frfree(f);
+        if (fd != chan->fds[0])
+			close(fd);
+        else {
+			/* Take out of conference */
+			/* Add us to the conference */
+			dahdic.chan = 0;
+			dahdic.confno = 0;
+			dahdic.confmode = 0;
+			if (ioctl(fd, DAHDI_SETCONF, &dahdic)) {
+				ast_log(LOG_WARNING, "Error setting conference\n");
+                }
+        }
+		
+ outrun:
+		
+        return ret;
+}
+
+static int conf_exec(struct ast_channel *chan, void *data)
+{
+	int res=-1;
+	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 *desired_group;
+	int input=0,search_group=0;
+		
+	if (chan->_state != AST_STATE_UP)
+		ast_answer(chan);
+	
+	desired_group = ast_strdupa(data);
+	if(!ast_strlen_zero(desired_group)) {
+		ast_verb(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_dahdi_channel_locked(input);
+			input = 0;
+		}
+		
+		tempchan = ichan ? ichan : ast_channel_walk_locked(tempchan);
+		
+		if ( !tempchan && !lastchan )
+			break;
+		
+		if (tempchan && search_group) {
+			const char *mygroup;
+			if((mygroup = pbx_builtin_getvar_helper(tempchan, "GROUP")) && (!strcmp(mygroup, desired_group))) {
+				ast_verb(3, "Found Matching Channel %s in group %s\n", tempchan->name, desired_group);
+			} else {
+				ast_channel_unlock(tempchan);
+				lastchan = tempchan;
+				continue;
+			}
+		}
+		if (tempchan && (!strcmp(tempchan->tech->type, "DAHDI")) && (tempchan != chan) ) {
+			ast_verb(3, "DAHDI channel %s is in-use, monitoring...\n", tempchan->name);
+			ast_copy_string(confstr, tempchan->name, sizeof(confstr));
+			ast_channel_unlock(tempchan);
+			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_channel_unlock(tempchan);
+		lastchan = tempchan;
+	}
+	return res;
+}
+
+static int unload_module(void)
+{
+	return ast_unregister_application(app);
+}
+
+static int load_module(void)
+{
+	return ((ast_register_application(app, conf_exec, synopsis, descrip)) ? AST_MODULE_LOAD_FAILURE : AST_MODULE_LOAD_SUCCESS);
+}
+
+AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Scan DAHDI channels application");
+