Call is initiated by Asterisk:
-If a call is reveiced from Asterisk, a new chan_call instance is created.
+If a call is requested from Asterisk, a new chan_call instance is created.
The new Asterisk instance pointer (ast) is stored to chan_call structure.
-A MESSASGE_NEWREF is sent to LCR requesting a new call reference (ref).
The current call ref is set to 0, the state is CHAN_LCR_STATE_OUT_PREPARE.
+If the call is received (lcr_call) A MESSASGE_NEWREF is sent to LCR requesting
+a new call reference (ref).
Further dialing information is queued.
After the new callref is received by special MESSAGE_NEWREF reply, new ref
is stored in the chan_call structure.
If the ref is 0 and the state is CHAN_LCR_STATE_RELEASE, see the proceedure
"Call is released by LCR".
-*/
-
-locking asterisk process and handler
-reconnect after socket closed, release all calls.
-debug of call handling
-denke an alle info-elements in jeder message (from asterisk & from lcr)
-ausloesen beim socket-verlust
-
-bei "ast_channel_alloc" kannste die Callerid und den type usw. setzten.
-da kannste auch die calledPartyNum setzen. Um asterisk ein Setup zu schicken rufst du einfach "ast_pbx_start( channel ) " auf. Die ganzen queue baren indications und Controls findest du in "include/asterisk/frame.h"
-
-Also zusammenfassend:
-
-Messages die zum Asterisk gehen:
-
-SETUP - > ast_pbx_start(ast)
- CONNECT -> ast_queue_control(ast,
- AST_CONTROL_ANSWER);
-PROCEEDING -> ast_queue_control(ast,
- AST_CONTROL_PROCEEDING);
-ALERTING -> ast_queue_control(ast,
- AST_CONTROL_RINGING);
-DISCONNECT -> ast_queue_hangup(ast);
-
-Messages die vom Asterisk kommen:
-
-lcr_request -> NEWREF
-lcr_call -> SETUP
-lcr_answer -> CONNECT
-lcr_hangup -> RELEASE_(complete)
- lcr_indicate(AST_CONTROL_RINGING) -> ALERTING
- lcr_indicate(AST_CONTROL_PROCEEDING) -> PROCEEDING
- lcr_indicate(AST_CONTROL_PROGRESS) -> PROGRESS
- lcr_indicate(AST_CONTROL_BUSY) -> DISCONNECT ( cause=17 )
-
+Locking issues:
+The deadlocking problem:
+- chan_lcr locks chan_lock and waits inside ast_queue_xxxx() for ast_channel
+to be unlocked.
+- ast_channel thread locks ast_channel and calls a tech function and waits
+there for chan_lock to be unlocked.
+The solution:
+Never call ast_queue_xxxx() if ast_channel is not locked and don't wait until
+ast_channel can be locked. All messages to asterisk are queued inside call
+instance and will be handled using a try-lock to get ast_channel lock.
+If it succeeds to lock ast_channel, the ast_queue_xxxx can safely called even
+if the lock is incremented and decremented there.
+Exception: Calling ast_queue_frame inside ast->tech->read is safe, because
+it is called from ast_channel process which has already locked ast_channel.
+*/
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <sys/types.h>
#include <time.h>
+//#include <signal.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/un.h>
-#include <pthread.h>
#include <semaphore.h>
-#include "extension.h"
-#include "message.h"
-#include "lcrsocket.h"
-#include "cause.h"
-#include "bchannel.h"
-#include "chan_lcr.h"
-
-
-
#include <asterisk/module.h>
#include <asterisk/channel.h>
#include <asterisk/config.h>
#include <asterisk/features.h>
#include <asterisk/sched.h>
+#include "extension.h"
+#include "message.h"
+#include "callerid.h"
+#include "lcrsocket.h"
+#include "cause.h"
+#include "bchannel.h"
+#include "options.h"
+#include "chan_lcr.h"
+
CHAN_LCR_STATE // state description structure
+MESSAGES // message text
+
+unsigned char flip_bits[256];
int lcr_debug=1;
int mISDN_created=1;
-char lcr_type[]="LCR";
+char lcr_type[]="lcr";
pthread_t chan_tid;
-pthread_mutex_t chan_lock;
+ast_mutex_t chan_lock; /* global lock */
+ast_mutex_t log_lock; /* logging log */
int quit;
+int glob_channel = 0;
+
int lcr_sock = -1;
struct admin_list {
struct admin_list *next;
- struct admin_msg msg;
+ struct admin_message msg;
} *admin_first = NULL;
+static struct ast_channel_tech lcr_tech;
+
+/*
+ * logging
+ */
+void chan_lcr_log(int type, const char *file, int line, const char *function, struct chan_call *call, struct ast_channel *ast, const char *fmt, ...)
+{
+ char buffer[1024];
+ char call_text[128] = "NULL";
+ char ast_text[128] = "NULL";
+ va_list args;
+
+ ast_mutex_lock(&log_lock);
+
+ va_start(args,fmt);
+ vsnprintf(buffer,sizeof(buffer)-1,fmt,args);
+ buffer[sizeof(buffer)-1]=0;
+ va_end(args);
+
+ if (call)
+ sprintf(call_text, "%d", call->ref);
+ if (ast)
+ strncpy(ast_text, ast->name, sizeof(ast_text)-1);
+ ast_text[sizeof(ast_text)-1] = '\0';
+
+ ast_log(type, file, line, function, "[call=%s ast=%s] %s", call_text, ast_text, buffer);
+
+ ast_mutex_unlock(&log_lock);
+}
+
/*
* channel and call instances
*/
struct chan_call *call_first;
-struct chan_call *find_call_ref(unsigned long ref)
+struct chan_call *find_call_ref(unsigned int ref)
{
struct chan_call *call = call_first;
return(call);
}
-struct chan_call *find_call_handle(unsigned long handle)
+#if 0
+struct chan_call *find_call_ast(struct ast_channel *ast)
{
struct chan_call *call = call_first;
while(call)
{
- if (call->bchannel_handle == handle)
+ if (call->ast == ast)
break;
call = call->next;
}
return(call);
}
-struct chan_call *alloc_call(void)
+struct chan_call *find_call_handle(unsigned int handle)
{
- struct chan_call **callp = &call_first;
-
- while(*callp)
- callp = &((*callp)->next);
+ struct chan_call *call = call_first;
- *callp = (struct chan_call *)malloc(sizeof(struct chan_call));
- if (*callp)
- memset(*callp, 0, sizeof(struct chan_call));
- return(*callp);
+ while(call)
+ {
+ if (call->bchannel_handle == handle)
+ break;
+ call = call->next;
+ }
+ return(call);
}
+#endif
void free_call(struct chan_call *call)
{
if (*temp == call)
{
*temp = (*temp)->next;
+ if (call->pipe[0] > -1)
+ close(call->pipe[0]);
+ if (call->pipe[1] > -1)
+ close(call->pipe[1]);
+ if (call->bchannel)
+ {
+ if (call->bchannel->call != call)
+ CERROR(call, NULL, "Linked bchannel structure has no link to us.\n");
+ call->bchannel->call = NULL;
+ }
+ if (call->bridge_call)
+ {
+ if (call->bridge_call->bridge_call != call)
+ CERROR(call, NULL, "Linked call structure has no link to us.\n");
+ call->bridge_call->bridge_call = NULL;
+ }
+ CDEBUG(call, NULL, "Call instance freed.\n");
free(call);
return;
}
temp = &((*temp)->next);
}
+ CERROR(call, NULL, "Call instance not found in list.\n");
}
-unsigned short new_brige_id(void)
+struct chan_call *alloc_call(void)
+{
+ struct chan_call **callp = &call_first;
+
+ while(*callp)
+ callp = &((*callp)->next);
+
+ *callp = (struct chan_call *)calloc(1, sizeof(struct chan_call));
+ if (*callp)
+ memset(*callp, 0, sizeof(struct chan_call));
+ if (pipe((*callp)->pipe) < 0) {
+ CERROR(*callp, NULL, "Failed to create pipe.\n");
+ free_call(*callp);
+ return(NULL);
+ }
+ CDEBUG(*callp, NULL, "Call instance allocated.\n");
+ return(*callp);
+}
+
+
+unsigned short new_bridge_id(void)
{
struct chan_call *call;
unsigned short id = 1;
break;
id++;
}
+ CDEBUG(NULL, NULL, "New bridge ID %d.\n", id);
return(id);
}
+/*
+ * enque message to LCR
+ */
+int send_message(int message_type, unsigned int ref, union parameter *param)
+{
+ struct admin_list *admin, **adminp;
+
+ if (lcr_sock < 0) {
+ CDEBUG(NULL, NULL, "Ignoring message %d, because socket is closed.\n", message_type);
+ return -1;
+ }
+ CDEBUG(NULL, NULL, "Sending %s to socket.\n", messages_txt[message_type]);
+
+ adminp = &admin_first;
+ while(*adminp)
+ adminp = &((*adminp)->next);
+ admin = (struct admin_list *)calloc(1, sizeof(struct admin_list));
+ if (!admin) {
+ CERROR(NULL, NULL, "No memory for message to LCR.\n");
+ return -1;
+ }
+ *adminp = admin;
+
+ admin->msg.message = ADMIN_MESSAGE;
+ admin->msg.u.msg.type = message_type;
+ admin->msg.u.msg.ref = ref;
+ memcpy(&admin->msg.u.msg.param, param, sizeof(union parameter));
+
+ return(0);
+}
/*
- * receive bchannel data
+ * apply options (in locked state)
*/
-void rx_data(struct bchannel *bchannel, unsigned char *data, int len)
+void apply_opt(struct chan_call *call, char *data)
{
+ union parameter newparam;
+ char string[1024], *p = string, *opt, *key;
+ int gain, i, newmode = 0;
+
+ if (!data[0])
+ return; // no opts
+
+ strncpy(string, data, sizeof(string)-1);
+ string[sizeof(string)-1] = '\0';
+
+ /* parse options */
+ while((opt = strsep(&p, ":")))
+ {
+ switch(opt[0]) {
+ case 'd':
+ if (opt[1] == '\0') {
+ CERROR(call, call->ast, "Option 'd' (display) expects parameter.\n", opt);
+ break;
+ }
+ CDEBUG(call, call->ast, "Option 'd' (display) with text '%s'.\n", opt+1);
+ if (call->state == CHAN_LCR_STATE_OUT_PREPARE)
+ strncpy(call->display, opt+1, sizeof(call->display)-1);
+ else {
+ memset(&newparam, 0, sizeof(union parameter));
+ strncpy(newparam.notifyinfo.display, opt+1, sizeof(newparam.notifyinfo.display)-1);
+ send_message(MESSAGE_NOTIFY, call->ref, &newparam);
+ }
+ break;
+ case 'n':
+ if (opt[1] != '\0') {
+ CERROR(call, call->ast, "Option 'n' (no DTMF) expects no parameter.\n", opt);
+ break;
+ }
+ CDEBUG(call, call->ast, "Option 'n' (no DTMF).\n");
+ call->no_dtmf = 1;
+ break;
+ case 'c':
+ if (opt[1] == '\0') {
+ CERROR(call, call->ast, "Option 'c' (encrypt) expects key parameter.\n", opt);
+ break;
+ }
+ key = opt+1;
+ /* check for 0xXXXX... type of key */
+ if (!!strncmp((char *)key, "0x", 2)) {
+ CERROR(call, call->ast, "Option 'c' (encrypt) expects key parameter starting with '0x'.\n", opt);
+ break;
+ }
+ key+=2;
+ if (strlen(key) > 56*2 || (strlen(key) % 1)) {
+ CERROR(call, call->ast, "Option 'c' (encrypt) expects key parameter with max 56 bytes ('0x' + 112 characters)\n", opt);
+ break;
+ }
+ i = 0;
+ while(*key)
+ {
+ if (*key>='0' && *key<='9')
+ call->bf_key[i] = (*key-'0') << 8;
+ else if (*key>='a' && *key<='f')
+ call->bf_key[i] = (*key-'a'+10) << 8;
+ else if (*key>='A' && *key<='F')
+ call->bf_key[i] = (*key-'A'+10) << 8;
+ else
+ break;
+ key++;
+ if (*key>='0' && *key<='9')
+ call->bf_key[i] += (*key - '0');
+ else if (*key>='a' && *key<='f')
+ call->bf_key[i] += (*key - 'a' + 10);
+ else if (*key>='A' && *key<='F')
+ call->bf_key[i] += (*key - 'A' + 10);
+ else
+ break;
+ key++;
+ i++;
+ }
+ if (*key) {
+ CERROR(call, call->ast, "Option 'c' (encrypt) expects key parameter with hex values 0-9,a-f.\n");
+ break;
+ }
+ call->bf_len = i;
+ CDEBUG(call, call->ast, "Option 'c' (encrypt) blowfish key '%s' (len=%d).\n", opt+1, i);
+ if (call->bchannel)
+ bchannel_blowfish(call->bchannel, call->bf_key, call->bf_len);
+ break;
+ case 'h':
+ if (opt[1] != '\0') {
+ CERROR(call, call->ast, "Option 'h' (HDLC) expects no parameter.\n", opt);
+ break;
+ }
+ CDEBUG(call, call->ast, "Option 'h' (HDLC).\n");
+ if (!call->hdlc) {
+ call->hdlc = 1;
+ newmode = 1;
+ }
+ break;
+ case 't':
+ if (opt[1] != '\0') {
+ CERROR(call, call->ast, "Option 't' (transparent) expects no parameter.\n", opt);
+ break;
+ }
+ CDEBUG(call, call->ast, "Option 't' (transparent).\n");
+ if (!call->transparent) {
+ call->transparent = 1;
+ newmode = 1;
+ }
+ break;
+ case 'e':
+ if (opt[1] == '\0') {
+ CERROR(call, call->ast, "Option 'e' (echo cancel) expects parameter.\n", opt);
+ break;
+ }
+ CDEBUG(call, call->ast, "Option 'e' (echo cancel) with config '%s'.\n", opt+1);
+ strncpy(call->pipeline, opt+1, sizeof(call->pipeline)-1);
+ if (call->bchannel)
+ bchannel_pipeline(call->bchannel, call->pipeline);
+ break;
+ case 'r':
+ if (opt[1] == '\0') {
+ CERROR(call, call->ast, "Option 'r' (re-buffer 160 bytes) expects no parameter.\n", opt);
+ break;
+ }
+ CDEBUG(call, call->ast, "Option 'r' (re-buffer 160 bytes)");
+ call->rebuffer = 1;
+ break;
+#if 0
+ case 's':
+ if (opt[1] != '\0') {
+ CERROR(call, call->ast, "Option 's' (inband DTMF) expects no parameter.\n", opt);
+ break;
+ }
+ CDEBUG(call, call->ast, "Option 's' (inband DTMF).\n");
+ call->inband_dtmf = 1;
+todo
+ break;
+#endif
+ case 'v':
+ if (opt[1] != 'r' && opt[1] != 't') {
+ CERROR(call, call->ast, "Option 'v' (volume) expects parameter.\n", opt);
+ break;
+ }
+ gain = atoi(opt+2);
+ if (gain < -8 || gain >8) {
+ CERROR(call, call->ast, "Option 'v' (volume) expects parameter in range of -8 through 8.\n");
+ break;
+ }
+ CDEBUG(call, call->ast, "Option 'v' (volume) with gain 2^%d.\n", gain);
+ if (opt[1] == 'r') {
+ call->rx_gain = gain;
+ if (call->bchannel)
+ bchannel_gain(call->bchannel, call->rx_gain, 0);
+ } else {
+ call->tx_gain = gain;
+ if (call->bchannel)
+ bchannel_gain(call->bchannel, call->tx_gain, 1);
+ }
+ break;
+ default:
+ CERROR(call, call->ast, "Option '%s' unknown.\n", opt);
+ }
+ }
+
+ /* re-open, if bchannel is created */
+ if (call->bchannel && call->bchannel->b_sock > -1) {
+ bchannel_destroy(call->bchannel);
+ if (bchannel_create(call->bchannel, ((call->transparent)?1:0) + ((call->hdlc)?2:0)))
+ bchannel_activate(call->bchannel, 1);
+ }
}
-void rx_dtmf(struct bchannel *bchannel, char tone)
+/*
+ * send setup info to LCR
+ * this function is called, when asterisk call is received and ref is received
+ */
+static void send_setup_to_lcr(struct chan_call *call)
{
+ union parameter newparam;
+ struct ast_channel *ast = call->ast;
+
+ if (!call->ast || !call->ref)
+ return;
+
+ CDEBUG(call, call->ast, "Sending setup to LCR. (interface=%s dialstring=%s, cid=%s)\n", call->interface, call->dialstring, call->cid_num);
+
+ /* send setup message to LCR */
+ memset(&newparam, 0, sizeof(union parameter));
+ newparam.setup.dialinginfo.itype = INFO_ITYPE_ISDN;
+ newparam.setup.dialinginfo.ntype = INFO_NTYPE_UNKNOWN;
+ strncpy(newparam.setup.dialinginfo.id, call->dialstring, sizeof(newparam.setup.dialinginfo.id)-1);
+ strncpy(newparam.setup.dialinginfo.interfaces, call->interface, sizeof(newparam.setup.dialinginfo.interfaces)-1);
+ newparam.setup.callerinfo.itype = INFO_ITYPE_CHAN;
+ newparam.setup.callerinfo.ntype = INFO_NTYPE_UNKNOWN;
+ strncpy(newparam.setup.callerinfo.display, call->display, sizeof(newparam.setup.callerinfo.display)-1);
+ call->display[0] = '\0';
+ if (call->cid_num[0])
+ strncpy(newparam.setup.callerinfo.id, call->cid_num, sizeof(newparam.setup.callerinfo.id)-1);
+ if (call->cid_name[0])
+ strncpy(newparam.setup.callerinfo.name, call->cid_name, sizeof(newparam.setup.callerinfo.name)-1);
+ if (call->cid_rdnis[0])
+ {
+ strncpy(newparam.setup.redirinfo.id, call->cid_rdnis, sizeof(newparam.setup.redirinfo.id)-1);
+ newparam.setup.redirinfo.itype = INFO_ITYPE_CHAN;
+ newparam.setup.redirinfo.ntype = INFO_NTYPE_UNKNOWN;
+ }
+ switch(ast->cid.cid_pres & AST_PRES_RESTRICTION)
+ {
+ case AST_PRES_ALLOWED:
+ newparam.setup.callerinfo.present = INFO_PRESENT_ALLOWED;
+ break;
+ case AST_PRES_RESTRICTED:
+ newparam.setup.callerinfo.present = INFO_PRESENT_RESTRICTED;
+ break;
+ case AST_PRES_UNAVAILABLE:
+ newparam.setup.callerinfo.present = INFO_PRESENT_NOTAVAIL;
+ break;
+ default:
+ newparam.setup.callerinfo.present = INFO_PRESENT_NULL;
+ }
+ switch(ast->cid.cid_ton)
+ {
+ case 4:
+ newparam.setup.callerinfo.ntype = INFO_NTYPE_SUBSCRIBER;
+ break;
+ case 2:
+ newparam.setup.callerinfo.ntype = INFO_NTYPE_NATIONAL;
+ break;
+ case 1:
+ newparam.setup.callerinfo.ntype = INFO_NTYPE_INTERNATIONAL;
+ break;
+ default:
+ newparam.setup.callerinfo.ntype = INFO_NTYPE_UNKNOWN;
+ }
+ newparam.setup.capainfo.bearer_capa = ast->transfercapability;
+ newparam.setup.capainfo.bearer_info1 = (options.law=='a')?3:2;
+ newparam.setup.capainfo.bearer_mode = INFO_BMODE_CIRCUIT;
+ newparam.setup.capainfo.hlc = INFO_HLC_NONE;
+ newparam.setup.capainfo.exthlc = INFO_HLC_NONE;
+ send_message(MESSAGE_SETUP, call->ref, &newparam);
+
+ /* change to outgoing setup state */
+ call->state = CHAN_LCR_STATE_OUT_SETUP;
}
/*
- * enque message to LCR
+ * send dialing info to LCR
+ * this function is called, when setup acknowledge is received and dialing
+ * info is available.
*/
-int send_message(int message_type, unsigned long ref, union parameter *param)
+static void send_dialque_to_lcr(struct chan_call *call)
{
- struct admin_list *admin, **adminp;
+ union parameter newparam;
- adminp = &admin_first;
- while(*adminp)
- adminp = &((*adminp)->next);
- admin = (struct admin_list *)malloc(sizeof(struct admin_list));
- *adminp = admin;
+ if (!call->ast || !call->ref || !call->dialque[0])
+ return;
+
+ CDEBUG(call, call->ast, "Sending dial queue to LCR. (dialing=%s)\n", call->dialque);
+
+ /* send setup message to LCR */
+ memset(&newparam, 0, sizeof(union parameter));
+ strncpy(newparam.information.id, call->dialque, sizeof(newparam.information.id)-1);
+ call->dialque[0] = '\0';
+ send_message(MESSAGE_INFORMATION, call->ref, &newparam);
+}
- admin->msg.type = message_type;
- admin->msg.ref = ref;
- memcpy(&admin->msg.param, param, sizeof(union parameter));
+/*
+ * in case of a bridge, the unsupported message can be forwarded directly
+ * to the remote call.
+ */
+static void bridge_message_if_bridged(struct chan_call *call, int message_type, union parameter *param)
+{
+ /* check bridge */
+ if (!call) return;
+ if (!call->bridge_call) return;
+ CDEBUG(call, NULL, "Sending message due briding.\n");
+ send_message(message_type, call->bridge_call->ref, param);
+}
- return(0);
+/*
+ * send release message to LCR and import bchannel if exported
+ */
+static void send_release_and_import(struct chan_call *call, int cause, int location)
+{
+ union parameter newparam;
+
+ /* importing channel */
+ if (call->bchannel) {
+ memset(&newparam, 0, sizeof(union parameter));
+ newparam.bchannel.type = BCHANNEL_RELEASE;
+ newparam.bchannel.handle = call->bchannel->handle;
+ send_message(MESSAGE_BCHANNEL, call->ref, &newparam);
+ }
+ /* sending release */
+ memset(&newparam, 0, sizeof(union parameter));
+ newparam.disconnectinfo.cause = cause;
+ newparam.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
+ send_message(MESSAGE_RELEASE, call->ref, &newparam);
+}
+
+/*
+ * check if extension matches and start asterisk
+ * if it can match, proceed
+ * if not, release
+ */
+static void lcr_start_pbx(struct chan_call *call, struct ast_channel *ast, int complete)
+{
+ int cause, ret;
+ union parameter newparam;
+
+ CDEBUG(call, ast, "Try to start pbx. (exten=%s context=%s complete=%s)\n", ast->exten, ast->context, complete?"yes":"no");
+
+ if (complete)
+ {
+ /* if not match */
+ if (!ast_canmatch_extension(ast, ast->context, ast->exten, 1, call->oad))
+ {
+ CDEBUG(call, ast, "Got 'sending complete', but extension '%s' will not match at context '%s' - releasing.\n", ast->exten, ast->context);
+ cause = 1;
+ goto release;
+ }
+ if (!ast_exists_extension(ast, ast->context, ast->exten, 1, call->oad))
+ {
+ CDEBUG(call, ast, "Got 'sending complete', but extension '%s' would match at context '%s', if more digits would be dialed - releasing.\n", ast->exten, ast->context);
+ cause = 28;
+ goto release;
+ }
+ CDEBUG(call, ast, "Got 'sending complete', extensions matches.\n");
+ /* send setup acknowledge to lcr */
+ memset(&newparam, 0, sizeof(union parameter));
+ send_message(MESSAGE_PROCEEDING, call->ref, &newparam);
+
+ /* change state */
+ call->state = CHAN_LCR_STATE_IN_PROCEEDING;
+ ast_setstate(ast, AST_STATE_OFFHOOK);
+
+ goto start;
+ }
+
+ if (ast_canmatch_extension(ast, ast->context, ast->exten, 1, call->oad))
+ {
+ /* send setup acknowledge to lcr */
+ if (call->state != CHAN_LCR_STATE_IN_DIALING) {
+ memset(&newparam, 0, sizeof(union parameter));
+ send_message(MESSAGE_OVERLAP, call->ref, &newparam);
+ }
+
+ /* change state */
+ call->state = CHAN_LCR_STATE_IN_DIALING;
+ ast_setstate(ast, AST_STATE_OFFHOOK);
+
+ /* if match, start pbx */
+ if (ast_exists_extension(ast, ast->context, ast->exten, 1, call->oad)) {
+ CDEBUG(call, ast, "Extensions matches.\n");
+ goto start;
+ }
+
+ /* if can match */
+ CDEBUG(call, ast, "Extensions may match, if more digits are dialed.\n");
+ return;
+ }
+
+ /* if not match */
+ cause = 1;
+ release:
+ /* release lcr */
+ CDEBUG(call, ast, "Releasing due to extension missmatch.\n");
+ send_release_and_import(call, cause, LOCATION_PRIVATE_LOCAL);
+ call->ref = 0;
+ /* release asterisk */
+ ast->hangupcause = call->cause;
+ /* change to release state */
+ call->state = CHAN_LCR_STATE_RELEASE;
+ ast_hangup(ast); // call will be destroyed here
+ return;
+
+ start:
+ /* send setup to asterisk */
+ CDEBUG(call, ast, "Starting call to Asterisk due to matching extension.\n");
+ ret = ast_pbx_start(ast);
+ if (ret < 0)
+ {
+ cause = (ret==-2)?34:27;
+ goto release;
+ }
+ call->pbx_started = 1;
+ return;
}
/*
static void lcr_in_setup(struct chan_call *call, int message_type, union parameter *param)
{
struct ast_channel *ast;
- union parameter newparam;
+
+ CDEBUG(call, NULL, "Incomming setup from LCR. (callerid %s, dialing %s)\n", param->setup.callerinfo.id, param->setup.dialinginfo.id);
/* create asterisk channel instrance */
- ast = ast_channel_alloc(1);
+ ast = ast_channel_alloc(1, AST_STATE_RESERVED, NULL, NULL, "", NULL, "", 0, "%s/%d", lcr_type, ++glob_channel);
if (!ast)
{
/* release */
- memset(&newparam, 0, sizeof(union parameter));
- newparam.disconnectinfo.cause = CAUSE_RESSOURCEUNAVAIL;
- newparam.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
- send_message(MESSAGE_RELEASE, call->ref, &newparam);
+ CERROR(call, NULL, "Failed to create Asterisk channel - releasing.\n");
+ send_release_and_import(call, CAUSE_RESSOURCEUNAVAIL, LOCATION_PRIVATE_LOCAL);
/* remove call */
free_call(call);
return;
}
- /* set ast pointer */
+ /* link together */
call->ast = ast;
+ ast->tech_pvt = call;
+ ast->tech = &lcr_tech;
+ ast->fds[0] = call->pipe[0];
/* fill setup information */
-#warning todo: setup-info reinschreiben
-
- /* send setup to asterisk */
-#warning todo: setup bei der asterisk triggern
+ if (param->setup.dialinginfo.id)
+ strncpy(ast->exten, param->setup.dialinginfo.id, AST_MAX_EXTENSION-1);
+ if (param->setup.context[0])
+ strncpy(ast->context, param->setup.context, AST_MAX_CONTEXT-1);
+ else
+ strncpy(ast->context, param->setup.callerinfo.interface, AST_MAX_CONTEXT-1);
+ if (param->setup.callerinfo.id[0])
+ ast->cid.cid_num = strdup(param->setup.callerinfo.id);
+ if (param->setup.callerinfo.name[0])
+ ast->cid.cid_name = strdup(param->setup.callerinfo.name);
+ if (param->setup.redirinfo.id[0])
+ ast->cid.cid_name = strdup(numberrize_callerinfo(param->setup.callerinfo.id, param->setup.callerinfo.ntype, options.national, options.international));
+ switch (param->setup.callerinfo.present)
+ {
+ case INFO_PRESENT_ALLOWED:
+ ast->cid.cid_pres = AST_PRES_ALLOWED;
+ break;
+ case INFO_PRESENT_RESTRICTED:
+ ast->cid.cid_pres = AST_PRES_RESTRICTED;
+ break;
+ default:
+ ast->cid.cid_pres = AST_PRES_UNAVAILABLE;
+ }
+ switch (param->setup.callerinfo.ntype)
+ {
+ case INFO_NTYPE_SUBSCRIBER:
+ ast->cid.cid_ton = 4;
+ break;
+ case INFO_NTYPE_NATIONAL:
+ ast->cid.cid_ton = 2;
+ break;
+ case INFO_NTYPE_INTERNATIONAL:
+ ast->cid.cid_ton = 1;
+ break;
+ default:
+ ast->cid.cid_ton = 0;
+ }
+ ast->transfercapability = param->setup.capainfo.bearer_capa;
+ /* enable hdlc if transcap is data */
+ if (ast->transfercapability == INFO_BC_DATAUNRESTRICTED
+ || ast->transfercapability == INFO_BC_DATARESTRICTED
+ || ast->transfercapability == INFO_BC_VIDEO)
+ call->hdlc = 1;
+ strncpy(call->oad, numberrize_callerinfo(param->setup.callerinfo.id, param->setup.callerinfo.ntype, options.national, options.international), sizeof(call->oad)-1);
+
+ /* configure channel */
+ ast->nativeformats = (options.law=='a')?AST_FORMAT_ALAW:AST_FORMAT_ULAW;
+ ast->readformat = ast->rawreadformat = ast->nativeformats;
+ ast->writeformat = ast->rawwriteformat = ast->nativeformats;
+ ast->priority = 1;
+ ast->hangupcause = 0;
/* change state */
call->state = CHAN_LCR_STATE_IN_SETUP;
+
+ if (!call->pbx_started)
+ lcr_start_pbx(call, ast, param->setup.dialinginfo.sending_complete);
}
/*
*/
static void lcr_in_overlap(struct chan_call *call, int message_type, union parameter *param)
{
+ if (!call->ast) return;
+
+ CDEBUG(call, call->ast, "Incomming setup acknowledge from LCR.\n");
+
/* send pending digits in dialque */
- if (call->dialque)
- send_dialing_to_lcr(call);
+ if (call->dialque[0])
+ send_dialque_to_lcr(call);
/* change to overlap state */
call->state = CHAN_LCR_STATE_OUT_DIALING;
}
*/
static void lcr_in_proceeding(struct chan_call *call, int message_type, union parameter *param)
{
+ CDEBUG(call, call->ast, "Incomming proceeding from LCR.\n");
+
/* change state */
call->state = CHAN_LCR_STATE_OUT_PROCEEDING;
- /* send event to asterisk */
- ast_queue_... todo
+ /* queue event for asterisk */
+ if (call->ast && call->pbx_started)
+ strncat(call->queue_string, "P", sizeof(call->queue_string)-1);
}
/*
*/
static void lcr_in_alerting(struct chan_call *call, int message_type, union parameter *param)
{
+ CDEBUG(call, call->ast, "Incomming alerting from LCR.\n");
+
/* change state */
call->state = CHAN_LCR_STATE_OUT_ALERTING;
- /* send event to asterisk */
- ast_queue_... todo
+ /* queue event to asterisk */
+ if (call->ast && call->pbx_started)
+ strncat(call->queue_string, "R", sizeof(call->queue_string)-1);
}
/*
*/
static void lcr_in_connect(struct chan_call *call, int message_type, union parameter *param)
{
+ union parameter newparam;
+
+ CDEBUG(call, call->ast, "Incomming connect (answer) from LCR.\n");
+
/* change state */
call->state = CHAN_LCR_STATE_CONNECT;
+ /* request bchannel */
+ if (!call->bchannel) {
+ CDEBUG(call, call->ast, "Requesting B-channel.\n");
+ memset(&newparam, 0, sizeof(union parameter));
+ newparam.bchannel.type = BCHANNEL_REQUEST;
+ send_message(MESSAGE_BCHANNEL, call->ref, &newparam);
+ }
/* copy connectinfo */
- todo
- /* send event to asterisk */
- ast_queue_... todo
+ memcpy(&call->connectinfo, ¶m->connectinfo, sizeof(struct connect_info));
+ /* queue event to asterisk */
+ if (call->ast && call->pbx_started)
+ strncat(call->queue_string, "A", sizeof(call->queue_string)-1);
}
/*
*/
static void lcr_in_disconnect(struct chan_call *call, int message_type, union parameter *param)
{
+ struct ast_channel *ast = call->ast;
+
+ CDEBUG(call, call->ast, "Incomming disconnect from LCR. (cause=%d)\n", param->disconnectinfo.cause);
+
/* change state */
call->state = CHAN_LCR_STATE_IN_DISCONNECT;
- /* copy disconnect info */
- todo
- /* send event to asterisk */
- ast_queue_... todo
+ /* save cause */
+ call->cause = param->disconnectinfo.cause;
+ call->location = param->disconnectinfo.location;
+ /* if bridge, forward disconnect and return */
+#ifdef TODO
+ feature flag
+ if (call->bridge_call)
+ {
+ CDEBUG(call, call->ast, "Only signal disconnect via bridge.\n");
+ bridge_message_if_bridged(call, message_type, param);
+ return;
+ }
+#endif
+ /* release lcr with same cause */
+ send_release_and_import(call, call->cause, call->location);
+ call->ref = 0;
+ /* change to release state */
+ call->state = CHAN_LCR_STATE_RELEASE;
+ /* queue release asterisk */
+ if (ast)
+ {
+ ast->hangupcause = call->cause;
+ if (call->pbx_started)
+ strcpy(call->queue_string, "H"); // overwrite other indications
+ else {
+ ast_hangup(ast); // call will be destroyed here
+ }
+ }
}
/*
*/
static void lcr_in_release(struct chan_call *call, int message_type, union parameter *param)
{
+ struct ast_channel *ast = call->ast;
+
+ CDEBUG(call, call->ast, "Incomming release from LCR, releasing ref. (cause=%d)\n", param->disconnectinfo.cause);
+
/* release ref */
- call->ref = NULL;
+ call->ref = 0;
/* change to release state */
call->state = CHAN_LCR_STATE_RELEASE;
/* copy release info */
- todo
- /* if we have an asterisk instance, send hangup, else we are done */
- if (call->ast)
+ if (!call->cause)
+ {
+ call->cause = param->disconnectinfo.cause;
+ call->location = param->disconnectinfo.location;
+ }
+ /* if we have an asterisk instance, queue hangup, else we are done */
+ if (ast)
{
- ast_queue_hangup(call->ast);
+ ast->hangupcause = call->cause;
+ if (call->pbx_started)
+ strcpy(call->queue_string, "H");
+ else {
+ ast_hangup(ast); // call will be destroyed here
+ }
} else
{
free_call(call);
*/
static void lcr_in_information(struct chan_call *call, int message_type, union parameter *param)
{
- /* copy digits */
- todo and write them, maybe queue them for asterisk
- /* send event to asterisk */
- ast_queue_... todo
+ struct ast_channel *ast = call->ast;
+
+ CDEBUG(call, call->ast, "Incoming information from LCR. (dialing=%s)\n", param->information.id);
+
+ if (!ast) return;
+
+ /* pbx not started */
+ if (!call->pbx_started)
+ {
+ CDEBUG(call, call->ast, "Asterisk not started, adding digits to number.\n");
+ strncat(ast->exten, param->information.id, AST_MAX_EXTENSION-1);
+ lcr_start_pbx(call, ast, param->information.sending_complete);
+ return;
+ }
+
+ /* queue digits */
+ if (call->state == CHAN_LCR_STATE_IN_DIALING && param->information.id[0])
+ strncat(call->queue_string, param->information.id, sizeof(call->queue_string)-1);
+
+ /* use bridge to forware message not supported by asterisk */
+ if (call->state == CHAN_LCR_STATE_CONNECT) {
+ CDEBUG(call, call->ast, "Call is connected, briding.\n");
+ bridge_message_if_bridged(call, message_type, param);
+ }
+}
+
+/*
+ * incoming information from LCR
+ */
+static void lcr_in_notify(struct chan_call *call, int message_type, union parameter *param)
+{
+ union parameter newparam;
+
+ CDEBUG(call, call->ast, "Incomming notify from LCR. (notify=%d)\n", param->notifyinfo.notify);
+
+ /* request bchannel, if call is resumed and we don't have it */
+ if (param->notifyinfo.notify == INFO_NOTIFY_USER_RESUMED && !call->bchannel && call->ref) {
+ CDEBUG(call, call->ast, "Reqesting bchannel at resume.\n");
+ memset(&newparam, 0, sizeof(union parameter));
+ newparam.bchannel.type = BCHANNEL_REQUEST;
+ send_message(MESSAGE_BCHANNEL, call->ref, &newparam);
+ }
+
+ if (!call->ast) return;
+
+ /* use bridge to forware message not supported by asterisk */
+ bridge_message_if_bridged(call, message_type, param);
}
/*
*/
static void lcr_in_facility(struct chan_call *call, int message_type, union parameter *param)
{
- /* copy progress info */
- todo and write them, maybe queue them for asterisk
- /* send event to asterisk */
- ast_queue_... todo
- or maybe use bride info to forward facility.
+ CDEBUG(call, call->ast, "Incomming facility from LCR.\n");
+
+ if (!call->ast) return;
+
+ /* use bridge to forware message not supported by asterisk */
+ bridge_message_if_bridged(call, message_type, param);
+}
+
+/*
+ * got dtmf from bchannel (locked state)
+ */
+void lcr_in_dtmf(struct chan_call *call, int val)
+{
+ struct ast_channel *ast = call->ast;
+ char digit[2];
+
+ if (!ast)
+ return;
+ if (!call->pbx_started)
+ return;
+
+ CDEBUG(call, call->ast, "Recognised DTMF digit '%c'.\n", val);
+ digit[0] = val;
+ digit[1] = '\0';
+ strncat(call->queue_string, digit, sizeof(call->queue_string)-1);
}
/*
* message received from LCR
*/
-int receive_message(int message_type, unsigned long ref, union parameter *param)
+int receive_message(int message_type, unsigned int ref, union parameter *param)
{
- union parameter newparam;
struct bchannel *bchannel;
struct chan_call *call;
+ union parameter newparam;
memset(&newparam, 0, sizeof(union parameter));
switch(param->bchannel.type)
{
case BCHANNEL_ASSIGN:
+ CDEBUG(NULL, NULL, "Received BCHANNEL_ASSIGN message. (handle=%08lx) for ref %d\n", param->bchannel.handle, ref);
if ((bchannel = find_bchannel_handle(param->bchannel.handle)))
{
- fprintf(stderr, "error: bchannel handle %x already assigned.\n", (int)param->bchannel.handle);
+ CERROR(NULL, NULL, "bchannel handle %x already assigned.\n", (int)param->bchannel.handle);
return(-1);
}
/* create bchannel */
bchannel = alloc_bchannel(param->bchannel.handle);
if (!bchannel)
{
- fprintf(stderr, "error: alloc bchannel handle %x failed.\n", (int)param->bchannel.handle);
+ CERROR(NULL, NULL, "alloc bchannel handle %x failed.\n", (int)param->bchannel.handle);
return(-1);
}
bchannel->b_tx_gain = param->bchannel.tx_gain;
bchannel->b_rx_gain = param->bchannel.rx_gain;
strncpy(bchannel->b_pipeline, param->bchannel.pipeline, sizeof(bchannel->b_pipeline)-1);
- if (param->bchannel.crypt_len)
+ if (param->bchannel.crypt_len && param->bchannel.crypt_len <= sizeof(bchannel->b_bf_key))
{
- bchannel->b_crypt_len = param->bchannel.crypt_len;
- bchannel->b_crypt_type = param->bchannel.crypt_type;
- memcpy(bchannel->b_crypt_key, param->bchannel.crypt, param->bchannel.crypt_len);
+ bchannel->b_bf_len = param->bchannel.crypt_len;
+ memcpy(bchannel->b_bf_key, param->bchannel.crypt, param->bchannel.crypt_len);
}
bchannel->b_txdata = 0;
bchannel->b_dtmf = 1;
/* in case, ref is not set, this bchannel instance must
* be created until it is removed again by LCR */
/* link to call */
- if ((call = find_call_ref(ref)))
+ call = find_call_ref(ref);
+ if (call)
{
- bchannel->ref = ref;
- call->bchannel_handle = param->bchannel.handle;
-#warning hier muesen alle stati gesetzt werden falls sie vor dem b-kanal verfügbar waren
- bchannel_join(bchannel, call->bridge_id);
+ bchannel->call = call;
+ call->bchannel = bchannel;
+ if (call->dtmf)
+ bchannel_dtmf(bchannel, 1);
+ if (call->bf_len)
+ bchannel_blowfish(bchannel, call->bf_key, call->bf_len);
+ if (call->pipeline[0])
+ bchannel_pipeline(bchannel, call->pipeline);
+ if (call->rx_gain)
+ bchannel_gain(bchannel, call->rx_gain, 0);
+ if (call->tx_gain)
+ bchannel_gain(bchannel, call->tx_gain, 1);
+ if (call->bridge_id) {
+ CDEBUG(call, call->ast, "Join bchannel, because call is already bridged.\n");
+ bchannel_join(bchannel, call->bridge_id);
+ }
+ /* create only, if call exists, othewhise it bchannel is freed below... */
+ if (bchannel_create(bchannel, ((call->transparent)?1:0) + ((call->hdlc)?2:0)))
+ bchannel_activate(bchannel, 1);
}
- if (bchannel_create(bchannel))
- bchannel_activate(bchannel, 1);
-
/* acknowledge */
newparam.bchannel.type = BCHANNEL_ASSIGN_ACK;
newparam.bchannel.handle = param->bchannel.handle;
send_message(MESSAGE_BCHANNEL, 0, &newparam);
+ /* if call has released before bchannel is assigned */
+ if (!call) {
+ newparam.bchannel.type = BCHANNEL_RELEASE;
+ newparam.bchannel.handle = param->bchannel.handle;
+ send_message(MESSAGE_BCHANNEL, 0, &newparam);
+ }
+
break;
case BCHANNEL_REMOVE:
+ CDEBUG(NULL, NULL, "Received BCHANNEL_REMOVE message. (handle=%08lx)\n", param->bchannel.handle);
if (!(bchannel = find_bchannel_handle(param->bchannel.handle)))
{
- #warning alle fprintf nach ast_log
- fprintf(stderr, "error: bchannel handle %x not assigned.\n", (int)param->bchannel.handle);
+ CERROR(NULL, NULL, "Bchannel handle %x not assigned.\n", (int)param->bchannel.handle);
return(-1);
}
- /* unlink from call */
- if ((call = find_call_ref(bchannel->ref)))
- {
- call->bchannel_handle = 0;
- }
- /* destroy and remove bchannel */
+ /* unklink from call and destroy bchannel */
free_bchannel(bchannel);
/* acknowledge */
break;
default:
- fprintf(stderr, "received unknown bchannel message %d\n", param->bchannel.type);
+ CDEBUG(NULL, NULL, "Received unknown bchannel message %d.\n", param->bchannel.type);
}
return(0);
}
if (param->direction)
{
/* new ref from lcr */
+ CDEBUG(NULL, NULL, "Received new ref by LCR, due to incomming call. (ref=%ld)\n", ref);
if (!ref || find_call_ref(ref))
{
- fprintf(stderr, "illegal new ref %d received\n", ref);
+ CERROR(NULL, NULL, "Illegal new ref %ld received.\n", ref);
return(-1);
}
/* allocate new call instance */
} else
{
/* new ref, as requested from this remote application */
+ CDEBUG(NULL, NULL, "Received new ref by LCR, as requested from chan_lcr. (ref=%ld)\n", ref);
call = find_call_ref(0);
if (!call)
{
/* send release, if ref does not exist */
- newparam.disconnectinfo.cause = CAUSE_NORMAL;
- newparam.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
- send_message(MESSAGE_RELEASE, ref, &newparam);
+ CDEBUG(NULL, NULL, "No call found, that requests a ref.\n");
+ send_release_and_import(call, CAUSE_NORMAL, LOCATION_PRIVATE_LOCAL);
return(0);
}
/* store new ref */
else if (call->state == CHAN_LCR_STATE_RELEASE)
{
/* send release */
- newparam.disconnectinfo.cause = todo
- newparam.disconnectinfo.location = todo
- send_message(MESSAGE_RELEASE, ref, &newparam);
+ if (call->cause)
+ send_release_and_import(call, call->cause, call->location);
+ else
+ send_release_and_import(call, CAUSE_NORMAL, LOCATION_PRIVATE_LOCAL);
/* free call */
free_call(call);
return(0);
/* check ref */
if (!ref)
{
- fprintf(stderr, "received message %d without ref\n", message_type);
+ CERROR(NULL, NULL, "Received message %d without ref.\n", message_type);
return(-1);
}
call = find_call_ref(ref);
if (!call)
{
/* ignore ref that is not used (anymore) */
+ CDEBUG(NULL, NULL, "Message %d from LCR ignored, because no call instance found.\n", message_type);
return(0);
}
break;
case MESSAGE_INFORMATION:
- lcr_in_disconnect(call, message_type, param);
+ lcr_in_information(call, message_type, param);
+ break;
+
+ case MESSAGE_NOTIFY:
+ lcr_in_notify(call, message_type, param);
break;
case MESSAGE_FACILITY:
- lcr_in_disconnect(call, message_type, param);
+ lcr_in_facility(call, message_type, param);
break;
- case MESSAGE_PATTERN:
-#warning todo
+ case MESSAGE_PATTERN: // audio available from LCR
break;
- case MESSAGE_NOPATTERN:
-#warning todo
+ case MESSAGE_NOPATTERN: // audio not available from LCR
break;
- case MESSAGE_AUDIOPATH:
-#warning todo
+ case MESSAGE_AUDIOPATH: // if remote audio connected or hold
+ call->audiopath = param->audiopath;
break;
default:
-#warning unhandled
+ CDEBUG(call, call->ast, "Message %d from LCR unhandled.\n", message_type);
+ break;
}
return(0);
}
+/*
+ * release all calls (due to broken socket)
+ */
+static void release_all_calls(void)
+{
+ struct chan_call *call;
+
+again:
+ call = call_first;
+ while(call) {
+ /* no ast, so we may directly free call */
+ if (!call->ast) {
+ CDEBUG(call, NULL, "Freeing call, because no Asterisk channel is linked.\n");
+ free_call(call);
+ goto again;
+ }
+ /* already in release process */
+ if (call->state == CHAN_LCR_STATE_RELEASE) {
+ call = call->next;
+ continue;
+ }
+ /* release or queue release */
+ call->ref = 0;
+ call->state = CHAN_LCR_STATE_RELEASE;
+ if (!call->pbx_started) {
+ CDEBUG(call, call->ast, "Releasing call, because no Asterisk channel is not started.\n");
+ ast_hangup(call->ast); // call will be destroyed here
+ goto again;
+ }
+ CDEBUG(call, call->ast, "Queue call release, because Asterisk channel is running.\n");
+ strcpy(call->queue_string, "H");
+ call = call->next;
+ }
+
+ /* release all bchannels */
+ while(bchannel_first)
+ free_bchannel(bchannel_first);
+}
+
/* asterisk handler
* warning! not thread safe
{
int work = 0;
int len;
- struct admin_message msg;
struct admin_list *admin;
+ struct admin_message msg;
- int sock;
-
- #warning SOCKET FEHLT!
/* read from socket */
- len = read(sock, &msg, sizeof(msg));
+ len = read(lcr_sock, &msg, sizeof(msg));
if (len == 0)
{
- printf("Socket closed\n");
+ CERROR(NULL, NULL, "Socket closed.\n");
return(-1); // socket closed
}
if (len > 0)
{
if (len != sizeof(msg))
{
- fprintf(stderr, "Socket short read (%d)\n", len);
+ CERROR(NULL, NULL, "Socket short read. (len %d)\n", len);
return(-1); // socket error
}
if (msg.message != ADMIN_MESSAGE)
{
- fprintf(stderr, "Socket received illegal message %d\n", msg.message);
- return(-1); // socket error
+ CERROR(NULL, NULL, "Socket received illegal message %d.\n", msg.message);
+ return(-1);
}
receive_message(msg.u.msg.type, msg.u.msg.ref, &msg.u.msg.param);
- printf("message received %d\n", msg.u.msg.type);
work = 1;
} else
{
if (errno != EWOULDBLOCK)
{
- fprintf(stderr, "Socket error %d\n", errno);
+ CERROR(NULL, NULL, "Socket failed (errno %d).\n", errno);
return(-1);
}
}
if (!admin_first)
return(work);
admin = admin_first;
- len = write(sock, &admin->msg, sizeof(msg));
+ len = write(lcr_sock, &admin->msg, sizeof(msg));
if (len == 0)
{
- printf("Socket closed\n");
+ CERROR(NULL, NULL, "Socket closed.\n");
return(-1); // socket closed
}
if (len > 0)
{
if (len != sizeof(msg))
{
- fprintf(stderr, "Socket short write (%d)\n", len);
+ CERROR(NULL, NULL, "Socket short write. (len %d)\n", len);
return(-1); // socket error
}
/* free head */
{
if (errno != EWOULDBLOCK)
{
- fprintf(stderr, "Socket error %d\n", errno);
+ CERROR(NULL, NULL, "Socket failed (errno %d).\n", errno);
return(-1);
}
}
}
/*
- * open and close socket
+ * open and close socket and thread
*/
int open_socket(void)
{
int ret;
- int sock;
char *socket_name = SOCKET_NAME;
int conn;
struct sockaddr_un sock_address;
- unsigned long on = 1;
+ unsigned int on = 1;
union parameter param;
/* open socket */
- if ((sock = socket(PF_UNIX, SOCK_STREAM, 0)) < 0)
+ if ((lcr_sock = socket(PF_UNIX, SOCK_STREAM, 0)) < 0)
{
- ast_log(LOG_ERROR, "Failed to create socket.\n");
- return(sock);
+ CERROR(NULL, NULL, "Failed to create socket.\n");
+ return(lcr_sock);
}
/* set socket address and name */
strcpy(sock_address.sun_path, socket_name);
/* connect socket */
- if ((conn = connect(sock, (struct sockaddr *)&sock_address, SUN_LEN(&sock_address))) < 0)
+ if ((conn = connect(lcr_sock, (struct sockaddr *)&sock_address, SUN_LEN(&sock_address))) < 0)
{
- close(sock);
- ast_log(LOG_ERROR, "Failed to connect to socket \"%s\". Is LCR running?\n", sock_address.sun_path);
+ close(lcr_sock);
+ lcr_sock = -1;
+ CDEBUG(NULL, NULL, "Failed to connect to socket '%s'. Is LCR running?\n", sock_address.sun_path);
return(conn);
}
/* set non-blocking io */
- if ((ret = ioctl(sock, FIONBIO, (unsigned char *)(&on))) < 0)
+ if ((ret = ioctl(lcr_sock, FIONBIO, (unsigned char *)(&on))) < 0)
{
- close(sock);
- ast_log(LOG_ERROR, "Failed to set socket into non-blocking IO.\n");
+ close(lcr_sock);
+ lcr_sock = -1;
+ CERROR(NULL, NULL, "Failed to set socket into non-blocking IO.\n");
return(ret);
}
strcpy(param.hello.application, "asterisk");
send_message(MESSAGE_HELLO, 0, ¶m);
- return(sock);
+ return(lcr_sock);
}
-void close_socket(int sock)
+void close_socket(void)
{
+ struct admin_list *admin, *temp;
+
+ /* flush pending messages */
+ admin = admin_first;
+ while(admin) {
+ temp = admin;
+ admin = admin->next;
+ free(temp);
+ }
+ admin_first = NULL;
+
/* close socket */
- if (socket >= 0)
- close(sock);
+ if (lcr_sock >= 0)
+ close(lcr_sock);
+ lcr_sock = -1;
}
-socket muss per timer fuer das öffnen checken
-static void *chan_thread(void *arg)
+/* sending queue to asterisk */
+static int queue_send(void)
{
- int work;
-
- pthread_mutex_lock(&chan_lock);
-
- while(!quit)
- {
- work = 0;
-
- /* handle socket */
- int ret = handle_socket();
- if (ret < 0)
- break;
- if (ret)
- work = 1;
-
- /* handle mISDN */
- ret = bchannel_handle();
- if (ret)
- work = 1;
-
- if (!work)
- {
- pthread_mutex_unlock(&chan_lock);
- usleep(30000);
- pthread_mutex_lock(&chan_lock);
+ int work = 0;
+ struct chan_call *call;
+ struct ast_channel *ast;
+ struct ast_frame fr;
+ char *p;
+
+ call = call_first;
+ while(call) {
+ p = call->queue_string;
+ ast = call->ast;
+ if (*p && ast) {
+ /* there is something to queue */
+ if (!ast_channel_trylock(ast)) { /* succeed */
+ while(*p) {
+ switch (*p) {
+ case 'P':
+ CDEBUG(call, ast, "Sending queued PROCEEDING to Asterisk.\n");
+ ast_queue_control(ast, AST_CONTROL_PROCEEDING);
+ break;
+ case 'R':
+ CDEBUG(call, ast, "Sending queued RINGING to Asterisk.\n");
+ ast_queue_control(ast, AST_CONTROL_RINGING);
+ break;
+ case 'A':
+ CDEBUG(call, ast, "Sending queued ANSWER to Asterisk.\n");
+ ast_queue_control(ast, AST_CONTROL_ANSWER);
+ break;
+ case 'H':
+ CDEBUG(call, ast, "Sending queued HANGUP to Asterisk.\n");
+ ast_queue_hangup(ast);
+ break;
+ case '1': case '2': case '3': case 'a':
+ case '4': case '5': case '6': case 'b':
+ case '7': case '8': case '9': case 'c':
+ case '*': case '0': case '#': case 'd':
+ CDEBUG(call, ast, "Sending queued digit '%c' to Asterisk.\n", *p);
+ /* send digit to asterisk */
+ memset(&fr, 0, sizeof(fr));
+ fr.frametype = AST_FRAME_DTMF;
+ fr.subclass = *p;
+ fr.delivery = ast_tv(0, 0);
+ fr.len = 100;
+ ast_queue_frame(ast, &fr);
+ break;
+ default:
+ CDEBUG(call, ast, "Ignoring queued digit 0x%02d.\n", *p);
+ }
+ p++;
+ }
+ call->queue_string[0] = '\0';
+ ast_channel_unlock(ast);
+ work = 1;
+ }
}
+ call = call->next;
}
-
- pthread_mutex_unlock(&chan_lock);
- return NULL;
+ return work;
}
-/*
- * send setup info to LCR
- * this function is called, when asterisk call is received and ref is received
- */
-static void send_setup_to_lcr(struct chan_call *call)
+/* signal handler */
+void sighandler(int sigset)
{
- if (!ast || !call->ref)
- return;
-
- /* send setup message to LCR */
- memset(&newparam, 0, sizeof(union parameter));
- newparam.setup.xxxxxx =
- send_message(MESSAGE_SETUP, call->ref, &newparam);
- /* change to outgoing setup state */
- call->state = CHAN_LCR_STATE_OUT_SETUP;
}
-#if 0
-CHRISTIAN: das war ein konflikt beim pullen
-siehe anderes lcr_request();
-bedenke: das ast_log muss noch üeberall eingepflegt werden
+/* chan_lcr thread */
+static void *chan_thread(void *arg)
+{
+ int work;
+ int ret;
+ union parameter param;
+ time_t retry = 0, now;
+
+ bchannel_pid = getpid();
+
+// signal(SIGPIPE, sighandler);
+
+ memset(¶m, 0, sizeof(union parameter));
+ if (lcr_sock < 0)
+ time(&retry);
-static struct ast_channel *lcr_request(const char *type, int format, void *data, int *cause)
-{
- struct chan_call *call=alloc_call();
+ ast_mutex_lock(&chan_lock);
- if (call) {
-#warning hier muss jetzt wohl eine Ref angefordert werden!
- ast=lcr_ast_new(call, ext, NULL, 0 );
+ while(!quit) {
+ work = 0;
- if (ast) {
- call->ast=ast;
+ if (lcr_sock > 0) {
+ /* handle socket */
+ ret = handle_socket();
+ if (ret < 0) {
+ CERROR(NULL, NULL, "Handling of socket failed - closing for some seconds.\n");
+ close_socket();
+ release_all_calls();
+ time(&retry);
+ }
+ if (ret)
+ work = 1;
} else {
- ast_log(LOG_WARNING, "Could not create new Asterisk Channel\n");
- free_call(call);
+ time(&now);
+ if (retry && now-retry > 5) {
+ CDEBUG(NULL, NULL, "Retry to open socket.\n");
+ retry = 0;
+ if (open_socket() < 0) {
+ time(&retry);
+ }
+ work = 1;
+ }
+
}
- } else {
- ast_log(LOG_WARNING, "Could not create new Lcr Call Handle\n");
- }
- return ast;
-}
-
- struct ast_channel *ast=NULL;
+ /* handle mISDN */
+ ret = bchannel_handle();
+ if (ret)
+ work = 1;
- char buf[128];
- char *port_str, *ext, *p;
- int port;
+ /* handle messages to asterisk */
+ ret = queue_send();
+ if (ret)
+ work = 1;
- ast_copy_string(buf, data, sizeof(buf)-1);
- p=buf;
- port_str=strsep(&p, "/");
- ext=strsep(&p, "/");
- ast_verbose("portstr:%s ext:%s\n",port_str, ext);
+ /* delay if no work done */
+ if (!work) {
+ ast_mutex_unlock(&chan_lock);
+ usleep(30000);
+ ast_mutex_lock(&chan_lock);
+ }
+ }
- sprintf(buf,"%s/%s",lcr_type,(char*)data);
-#endif
+ close_socket();
-/*
- * send dialing info to LCR
- * this function is called, when setup acknowledge is received and dialing
- * info is available.
- */
-static void send_dialing_to_lcr(struct chan_call *call)
-{
- if (!ast || !call->ref || !call->dialque)
- return;
+ CERROR(NULL, NULL, "Thread exit.\n");
- /* send setup message to LCR */
- memset(&newparam, 0, sizeof(union parameter));
- strncpy(newparam.dialinginfo.id, call->dialque, sizeof(newparam.dialinginfo.id)-1);
- call->dialque[0] = '\0';
- send_message(MESSAGE_INFORMATION, call->ref, &newparam);
+ ast_mutex_unlock(&chan_lock);
+
+// signal(SIGPIPE, SIG_DFL);
+
+ return NULL;
}
/*
* new asterisk instance
*/
-static struct ast_channel *lcr_request(const char *type, int format, void *data, int *cause)
+static
+struct ast_channel *lcr_request(const char *type, int format, void *data, int *cause)
{
- pthread_mutex_lock(&chan_lock);
+ char exten[256], *dial, *interface, *opt;
+ struct ast_channel *ast;
+ struct chan_call *call;
+
+ ast_mutex_lock(&chan_lock);
+ CDEBUG(NULL, NULL, "Received request from Asterisk. (data=%s)\n", (char *)data);
+
+ /* if socket is closed */
+ if (lcr_sock < 0)
+ {
+ CERROR(NULL, NULL, "Rejecting call from Asterisk, because LCR not running.\n");
+ ast_mutex_unlock(&chan_lock);
+ return NULL;
+ }
/* create call instance */
call = alloc_call();
if (!call)
{
/* failed to create instance */
+ ast_mutex_unlock(&chan_lock);
return NULL;
}
+
/* create asterisk channel instrance */
- ast = ast_channel_alloc(1);
+ ast = ast_channel_alloc(1, AST_STATE_RESERVED, NULL, NULL, "", NULL, "", 0, "%s/%d", lcr_type, ++glob_channel);
if (!ast)
{
+ CERROR(NULL, NULL, "Failed to create Asterisk channel.\n");
free_call(call);
/* failed to create instance */
+ ast_mutex_unlock(&chan_lock);
return NULL;
}
+ ast->tech = &lcr_tech;
+ ast->tech_pvt = (void *)1L; // set pointer or asterisk will not call
+ /* configure channel */
+ ast->nativeformats = (options.law=='a')?AST_FORMAT_ALAW:AST_FORMAT_ULAW;
+ ast->readformat = ast->rawreadformat = ast->nativeformats;
+ ast->writeformat = ast->rawwriteformat = ast->nativeformats;
+ ast->priority = 1;
+ ast->hangupcause = 0;
+
/* link together */
- ast->tech_pvt = call;
call->ast = ast;
- /* send MESSAGE_NEWREF */
- memset(&newparam, 0, sizeof(union parameter));
- newparam.direction = 0; /* request from app */
- send_message(MESSAGE_NEWREF, 0, &newparam);
+ ast->tech_pvt = call;
+ ast->fds[0] = call->pipe[0];
+ call->pbx_started = 0;
/* set state */
call->state = CHAN_LCR_STATE_OUT_PREPARE;
- pthread_mutex_unlock(&chan_lock);
+ /*
+ * Extract interface, dialstring, options from data.
+ * Formats can be:
+ * <dialstring>
+ * <interface>/<dialstring>
+ * <interface>/<dialstring>/options
+ */
+ strncpy(exten, (char *)data, sizeof(exten)-1);
+ exten[sizeof(exten)-1] = '\0';
+ if ((dial = strchr(exten, '/'))) {
+ *dial++ = '\0';
+ interface = exten;
+ if ((opt = strchr(dial, '/')))
+ *opt++ = '\0';
+ else
+ opt = "";
+ } else {
+ dial = exten;
+ interface = "";
+ opt = "";
+ }
+ strncpy(call->interface, interface, sizeof(call->interface)-1);
+ strncpy(call->dialstring, dial, sizeof(call->dialstring)-1);
+ apply_opt(call, (char *)opt);
+
+ ast_mutex_unlock(&chan_lock);
+ return ast;
}
/*
*/
static int lcr_call(struct ast_channel *ast, char *dest, int timeout)
{
- struct chan_call *call=ast->tech_pvt;
- char buf[128];
- char *port_str, *dad, *p;
-
- if (!call) return -1;
-
- pthread_mutex_lock(&chan_lock);
+ union parameter newparam;
+ struct chan_call *call;
- hier muss noch
- ast_copy_string(buf, dest, sizeof(buf)-1);
- p=buf;
- port_str=strsep(&p, "/");
- dad=strsep(&p, "/");
+ ast_mutex_lock(&chan_lock);
+ call = ast->tech_pvt;
+ if (!call) {
+ CERROR(NULL, ast, "Received call from Asterisk, but call instance does not exist.\n");
+ ast_mutex_unlock(&chan_lock);
+ return -1;
+ }
- /* send setup message, if we already have a callref */
- if (call->ref)
- send_setup_to_lcr(call);
+ CDEBUG(NULL, ast, "Received call from Asterisk.\n");
- if (lcr_debug)
- ast_verbose("Call: ext:%s dest:(%s) -> dad(%s) \n", ast->exten,dest, dad);
+ /* pbx process is started */
+ call->pbx_started = 1;
+ /* send MESSAGE_NEWREF */
+ memset(&newparam, 0, sizeof(union parameter));
+ newparam.direction = 0; /* request from app */
+ send_message(MESSAGE_NEWREF, 0, &newparam);
-#warning hier müssen wi eine der geholten REFs nehmen und ein SETUP schicken, die INFOS zum SETUP stehen im Ast pointer drin, bzw. werden hier übergeben.
-
- pthread_mutex_unlock(&chan_lock);
+ /* set hdlc if capability requires hdlc */
+ if (ast->transfercapability == INFO_BC_DATAUNRESTRICTED
+ || ast->transfercapability == INFO_BC_DATARESTRICTED
+ || ast->transfercapability == INFO_BC_VIDEO)
+ call->hdlc = 1;
+ /* if hdlc is forced by option, we change transcap to data */
+ if (call->hdlc
+ && ast->transfercapability != INFO_BC_DATAUNRESTRICTED
+ && ast->transfercapability != INFO_BC_DATARESTRICTED
+ && ast->transfercapability != INFO_BC_VIDEO)
+ ast->transfercapability = INFO_BC_DATAUNRESTRICTED;
+
+ call->cid_num[0] = 0;
+ call->cid_name[0] = 0;
+ call->cid_rdnis[0] = 0;
+
+ if (ast->cid.cid_num) if (ast->cid.cid_num[0])
+ strncpy(call->cid_num, ast->cid.cid_num,
+ sizeof(call->cid_num)-1);
+
+ if (ast->cid.cid_name) if (ast->cid.cid_name[0])
+ strncpy(call->cid_name, ast->cid.cid_name,
+ sizeof(call->cid_name)-1);
+ if (ast->cid.cid_rdnis) if (ast->cid.cid_rdnis[0])
+ strncpy(call->cid_rdnis, ast->cid.cid_rdnis,
+ sizeof(call->cid_rdnis)-1);
+
+ ast_mutex_unlock(&chan_lock);
return 0;
}
-static int lcr_digit(struct ast_channel *ast, char digit)
+static int lcr_digit_begin(struct ast_channel *ast, char digit)
{
+ struct chan_call *call;
+ union parameter newparam;
char buf[]="x";
- if (!call) return -1;
-
/* only pass IA5 number space */
if (digit > 126 || digit < 32)
return 0;
- pthread_mutex_lock(&chan_lock);
+ ast_mutex_lock(&chan_lock);
+ call = ast->tech_pvt;
+ if (!call) {
+ CERROR(NULL, ast, "Received digit from Asterisk, but no call instance exists.\n");
+ ast_mutex_unlock(&chan_lock);
+ return -1;
+ }
+
+ CDEBUG(call, ast, "Received digit '%c' from Asterisk.\n", digit);
/* send information or queue them */
if (call->ref && call->state == CHAN_LCR_STATE_OUT_DIALING)
{
- send_dialing_to_lcr(call);
+ CDEBUG(call, ast, "Sending digit to LCR, because we are in dialing state.\n");
+ memset(&newparam, 0, sizeof(union parameter));
+ newparam.information.id[0] = digit;
+ newparam.information.id[1] = '\0';
+ send_message(MESSAGE_INFORMATION, call->ref, &newparam);
} else
if (!call->ref
- && (call->state == CHAN_LCR_STATE_OUT_PREPARE || call->state == CHAN_LCR_STATE_OUT_SETUP));
+ && (call->state == CHAN_LCR_STATE_OUT_PREPARE || call->state == CHAN_LCR_STATE_OUT_SETUP))
{
+ CDEBUG(call, ast, "Queue digits, because we are in setup/dialing state and have no ref yet.\n");
*buf = digit;
- strncat(call->dialque, buf, strlen(char->dialque)-1);
- } else
- {
-digits kommen, koennen aber nicht verwendet werden.
- sollen wir sie als info senden (im connect zb.)
+ strncat(call->dialque, buf, strlen(call->dialque)-1);
}
- pthread_mutex_unlock(&chan_lock);
-
+ ast_mutex_unlock(&chan_lock);
return(0);
}
-static int lcr_answer(struct ast_channel *c)
+static int lcr_digit_end(struct ast_channel *ast, char digit, unsigned int duration)
+{
+ printf("DIGIT END %c\n", digit);
+ return (0);
+}
+
+static int lcr_answer(struct ast_channel *ast)
{
- struct chan_call *call=c->tech_pvt;
- if (!call) return -1;
- pthread_mutex_lock(&chan_lock);
- pthread_mutex_unlock(&chan_lock);
+ union parameter newparam;
+ struct chan_call *call;
+
+ ast_mutex_lock(&chan_lock);
+ call = ast->tech_pvt;
+ if (!call) {
+ CERROR(NULL, ast, "Received answer from Asterisk, but no call instance exists.\n");
+ ast_mutex_unlock(&chan_lock);
+ return -1;
+ }
+
+ CDEBUG(call, ast, "Received answer from Asterisk.\n");
+
+ /* copy connectinfo, if bridged */
+ if (call->bridge_call)
+ memcpy(&call->connectinfo, &call->bridge_call->connectinfo, sizeof(struct connect_info));
+ /* send connect message to lcr */
+ memset(&newparam, 0, sizeof(union parameter));
+ memcpy(&newparam.connectinfo, &call->connectinfo, sizeof(struct connect_info));
+ send_message(MESSAGE_CONNECT, call->ref, &newparam);
+ /* change state */
+ call->state = CHAN_LCR_STATE_CONNECT;
+ /* request bchannel */
+ if (!call->bchannel) {
+ CDEBUG(call, ast, "Requesting B-channel.\n");
+ memset(&newparam, 0, sizeof(union parameter));
+ newparam.bchannel.type = BCHANNEL_REQUEST;
+ send_message(MESSAGE_BCHANNEL, call->ref, &newparam);
+ }
+ /* enable keypad */
+// memset(&newparam, 0, sizeof(union parameter));
+// send_message(MESSAGE_ENABLEKEYPAD, call->ref, &newparam);
+ /* enable dtmf */
+ if (call->no_dtmf)
+ CDEBUG(call, ast, "DTMF is disabled by option.\n");
+ else
+ call->dtmf = 1;
+
+ ast_mutex_unlock(&chan_lock);
return 0;
}
static int lcr_hangup(struct ast_channel *ast)
{
- struct chan_call *call = ast->tech_pvt;
+ struct chan_call *call;
+ pthread_t tid = pthread_self();
+
+ if (!pthread_equal(tid, chan_tid))
+ ast_mutex_lock(&chan_lock);
+ call = ast->tech_pvt;
+ if (!call) {
+ CERROR(NULL, ast, "Received hangup from Asterisk, but no call instance exists.\n");
+ if (!pthread_equal(tid, chan_tid))
+ ast_mutex_unlock(&chan_lock);
+ return -1;
+ }
- if (!call)
- return 0;
+ if (!pthread_equal(tid, chan_tid))
+ CDEBUG(call, ast, "Received hangup from Asterisk thread.\n");
+ else
+ CDEBUG(call, ast, "Received hangup from LCR thread.\n");
- pthread_mutex_lock(&chan_lock);
/* disconnect asterisk, maybe not required */
ast->tech_pvt = NULL;
+ ast->fds[0] = -1;
if (call->ref)
{
/* release */
- memset(&newparam, 0, sizeof(union parameter));
- newparam.disconnectinfo.cause = CAUSE_RESSOURCEUNAVAIL;
- newparam.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
- send_message(MESSAGE_RELEASE, call->ref, &newparam);
+ CDEBUG(call, ast, "Releasing ref and freeing call instance.\n");
+ if (ast->hangupcause > 0)
+ send_release_and_import(call, ast->hangupcause, LOCATION_PRIVATE_LOCAL);
+ else
+ send_release_and_import(call, CAUSE_RESSOURCEUNAVAIL, LOCATION_PRIVATE_LOCAL);
/* remove call */
free_call(call);
- pthread_mutex_unlock(&chan_lock);
+ if (!pthread_equal(tid, chan_tid))
+ ast_mutex_unlock(&chan_lock);
return 0;
} else
{
if (call->state == CHAN_LCR_STATE_RELEASE)
{
/* we get the response to our release */
+ CDEBUG(call, ast, "Freeing call instance, because we have no ref AND we are requesting no ref.\n");
free_call(call);
} else
{
/* during prepare, we change to release state */
+ CDEBUG(call, ast, "We must wait until we received our ref, until we can free call instance.\n");
call->state = CHAN_LCR_STATE_RELEASE;
}
}
- pthread_mutex_unlock(&chan_lock);
+ if (!pthread_equal(tid, chan_tid))
+ ast_mutex_unlock(&chan_lock);
return 0;
}
-static int lcr_write(struct ast_channel *c, struct ast_frame *f)
+static int lcr_write(struct ast_channel *ast, struct ast_frame *f)
{
- struct chan_call *call= c->tech_pvt;
- if (!call) return 0;
- pthread_mutex_lock(&chan_lock);
- pthread_mutex_unlock(&chan_lock);
+ struct chan_call *call;
+
+ if (!f->subclass)
+ CDEBUG(NULL, ast, "No subclass\n");
+ if (!(f->subclass & ast->nativeformats))
+ CDEBUG(NULL, ast, "Unexpected format.\n");
+
+ ast_mutex_lock(&chan_lock);
+ call = ast->tech_pvt;
+ if (!call) {
+ ast_mutex_unlock(&chan_lock);
+ return -1;
+ }
+ if (call->bchannel && f->samples)
+ bchannel_transmit(call->bchannel, f->data, f->samples);
+ ast_mutex_unlock(&chan_lock);
+ return 0;
}
-static struct ast_frame *lcr_read(struct ast_channel *c)
+static struct ast_frame *lcr_read(struct ast_channel *ast)
{
- struct chan_call *call = c->tech_pvt;
- if (!call) return 0;
- pthread_mutex_lock(&chan_lock);
- pthread_mutex_unlock(&chan_lock);
+ struct chan_call *call;
+ int i, len;
+ unsigned char *p;
+
+ ast_mutex_lock(&chan_lock);
+ call = ast->tech_pvt;
+ if (!call) {
+ ast_mutex_unlock(&chan_lock);
+ return NULL;
+ }
+ if (call->pipe[0] > -1) {
+ if (call->rebuffer) {
+ len = read(call->pipe[0], call->read_buff, 160);
+ } else {
+ len = read(call->pipe[0], call->read_buff, sizeof(call->read_buff));
+ }
+ if (len <= 0) {
+ close(call->pipe[0]);
+ call->pipe[0] = -1;
+ return NULL;
+ }
+ }
+
+ p = call->read_buff;
+ for (i = 0; i < len; i++) {
+ *p = flip_bits[*p];
+ p++;
+ }
+
+ call->read_fr.frametype = AST_FRAME_VOICE;
+ call->read_fr.subclass = ast->nativeformats;
+ call->read_fr.datalen = len;
+ call->read_fr.samples = len;
+ call->read_fr.delivery = ast_tv(0,0);
+ call->read_fr.data = call->read_buff;
+ ast_mutex_unlock(&chan_lock);
+
+ return &call->read_fr;
}
-static int lcr_indicate(struct ast_channel *c, int cond, const void *data, size_t datalen)
+static int lcr_indicate(struct ast_channel *ast, int cond, const void *data, size_t datalen)
{
- int res = -1;
- if (!call) return -1;
-
- pthread_mutex_lock(&chan_lock);
+ union parameter newparam;
+ int res = 0;
+ struct chan_call *call;
+
+ ast_mutex_lock(&chan_lock);
+ call = ast->tech_pvt;
+ if (!call) {
+ CERROR(NULL, ast, "Received indicate from Asterisk, but no call instance exists.\n");
+ ast_mutex_unlock(&chan_lock);
+ return -1;
+ }
switch (cond) {
case AST_CONTROL_BUSY:
+ CDEBUG(call, ast, "Received indicate AST_CONTROL_BUSY from Asterisk.\n");
+ ast_setstate(ast, AST_STATE_BUSY);
+ if (call->state != CHAN_LCR_STATE_OUT_DISCONNECT) {
+ /* send message to lcr */
+ memset(&newparam, 0, sizeof(union parameter));
+ newparam.disconnectinfo.cause = 17;
+ newparam.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
+ send_message(MESSAGE_DISCONNECT, call->ref, &newparam);
+ /* change state */
+ call->state = CHAN_LCR_STATE_OUT_DISCONNECT;
+ }
+ break;
case AST_CONTROL_CONGESTION:
+ CDEBUG(call, ast, "Received indicate AST_CONTROL_CONGESTION from Asterisk. (cause %d)\n", ast->hangupcause);
+ if (call->state != CHAN_LCR_STATE_OUT_DISCONNECT) {
+ /* send message to lcr */
+ memset(&newparam, 0, sizeof(union parameter));
+ newparam.disconnectinfo.cause = ast->hangupcause;
+ newparam.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
+ send_message(MESSAGE_DISCONNECT, call->ref, &newparam);
+ /* change state */
+ call->state = CHAN_LCR_STATE_OUT_DISCONNECT;
+ }
+ break;
+ case AST_CONTROL_PROCEEDING:
+ CDEBUG(call, ast, "Received indicate AST_CONTROL_PROCEEDING from Asterisk.\n");
+ if (call->state == CHAN_LCR_STATE_IN_SETUP
+ || call->state == CHAN_LCR_STATE_IN_DIALING) {
+ /* send message to lcr */
+ memset(&newparam, 0, sizeof(union parameter));
+ send_message(MESSAGE_PROCEEDING, call->ref, &newparam);
+ /* change state */
+ call->state = CHAN_LCR_STATE_IN_PROCEEDING;
+ }
+ break;
case AST_CONTROL_RINGING:
- pthread_mutex_unlock(&chan_lock);
- return -1;
+ CDEBUG(call, ast, "Received indicate AST_CONTROL_RINGING from Asterisk.\n");
+ ast_setstate(ast, AST_STATE_RINGING);
+ if (call->state == CHAN_LCR_STATE_IN_SETUP
+ || call->state == CHAN_LCR_STATE_IN_DIALING
+ || call->state == CHAN_LCR_STATE_IN_PROCEEDING) {
+ /* send message to lcr */
+ memset(&newparam, 0, sizeof(union parameter));
+ send_message(MESSAGE_ALERTING, call->ref, &newparam);
+ /* change state */
+ call->state = CHAN_LCR_STATE_IN_ALERTING;
+ }
+ break;
case -1:
- pthread_mutex_unlock(&chan_lock);
- return 0;
+ CDEBUG(call, ast, "Received indicate -1.\n");
+ res = -1;
+ break;
case AST_CONTROL_VIDUPDATE:
+ CDEBUG(call, ast, "Received indicate AST_CONTROL_VIDUPDATE.\n");
res = -1;
break;
case AST_CONTROL_HOLD:
- ast_verbose(" << Console Has Been Placed on Hold >> \n");
- //ast_moh_start(c, data, g->mohinterpret);
+ CDEBUG(call, ast, "Received indicate AST_CONTROL_HOLD from Asterisk.\n");
+ /* send message to lcr */
+ memset(&newparam, 0, sizeof(union parameter));
+ newparam.notifyinfo.notify = INFO_NOTIFY_REMOTE_HOLD;
+ send_message(MESSAGE_NOTIFY, call->ref, &newparam);
+
+ /*start music onhold*/
+ ast_moh_start(ast,data,ast->musicclass);
break;
case AST_CONTROL_UNHOLD:
- ast_verbose(" << Console Has Been Retrieved from Hold >> \n");
- //ast_moh_stop(c);
- break;
+ CDEBUG(call, ast, "Received indicate AST_CONTROL_UNHOLD from Asterisk.\n");
+ /* send message to lcr */
+ memset(&newparam, 0, sizeof(union parameter));
+ newparam.notifyinfo.notify = INFO_NOTIFY_REMOTE_RETRIEVAL;
+ send_message(MESSAGE_NOTIFY, call->ref, &newparam);
+
+ /*stop moh*/
+ ast_moh_stop(ast);
+ break;
default:
- ast_log(LOG_WARNING, "Don't know how to display condition %d on %s\n", cond, c->name);
- pthread_mutex_unlock(&chan_lock);
- return -1;
+ CERROR(call, ast, "Received indicate from Asterisk with unknown condition %d.\n", cond);
+ res = -1;
+ break;
}
- pthread_mutex_unlock(&chan_lock);
- return 0;
+ /* return */
+ ast_mutex_unlock(&chan_lock);
+ return res;
}
-static struct ast_channel_tech lcr_tech = {
- .type=lcr_type,
- .description="Channel driver for connecting to Linux-Call-Router",
- .capabilities=AST_FORMAT_ALAW,
- .requester=lcr_request,
- .send_digit=lcr_digit,
- .call=lcr_call,
-// .bridge=lcr_bridge,
- .hangup=lcr_hangup,
- .answer=lcr_answer,
- .read=lcr_read,
- .write=lcr_write,
- .indicate=lcr_indicate,
-// .fixup=lcr_fixup,
-// .send_text=lcr_send_text,
- .properties=0
-};
+/*
+ * fixup asterisk
+ */
+static int lcr_fixup(struct ast_channel *oldast, struct ast_channel *newast)
+{
+ struct chan_call *call;
-#warning das muss mal aus der config datei gelesen werden:
-char lcr_context[]="from-lcr";
+ ast_mutex_lock(&chan_lock);
+ call = oldast->tech_pvt;
+ if (!call) {
+ CERROR(NULL, oldast, "Received fixup from Asterisk, but no call instance exists.\n");
+ ast_mutex_unlock(&chan_lock);
+ return -1;
+ }
+
+ CDEBUG(call, oldast, "Received fixup from Asterisk.\n");
+ call->ast = newast;
+ ast_mutex_lock(&chan_lock);
+ return 0;
+}
-static struct ast_channel *lcr_ast_new(struct chan_call *call, char *exten, char *callerid, int ref)
+/*
+ * send_text asterisk
+ */
+static int lcr_send_text(struct ast_channel *ast, const char *text)
{
- struct ast_channel *tmp;
- char *cid_name = 0, *cid_num = 0;
+ struct chan_call *call;
+ union parameter newparam;
+
+ ast_mutex_lock(&chan_lock);
+ call = ast->tech_pvt;
+ if (!call) {
+ CERROR(NULL, ast, "Received send_text from Asterisk, but no call instance exists.\n");
+ ast_mutex_unlock(&chan_lock);
+ return -1;
+ }
+
+ CDEBUG(call, ast, "Received send_text from Asterisk. (text=%s)\n", text);
+ memset(&newparam, 0, sizeof(union parameter));
+ strncpy(newparam.notifyinfo.display, text, sizeof(newparam.notifyinfo.display)-1);
+ send_message(MESSAGE_NOTIFY, call->ref, &newparam);
+ ast_mutex_lock(&chan_lock);
+ return 0;
+}
+
+/*
+ * bridge process
+ */
+enum ast_bridge_result lcr_bridge(struct ast_channel *ast1,
+ struct ast_channel *ast2, int flags,
+ struct ast_frame **fo,
+ struct ast_channel **rc, int timeoutms)
+{
+ struct chan_call *call1, *call2;
+ struct ast_channel *carr[2], *who;
+ int to;
+ struct ast_frame *f;
+ int bridge_id;
- if (callerid)
- ast_callerid_parse(callerid, &cid_name, &cid_num);
+ CDEBUG(NULL, NULL, "Received briding request from Asterisk.\n");
- tmp = ast_channel_alloc(1, AST_STATE_RESERVED, cid_num, cid_name, "", exten, "", 0, "%s/%d", lcr_type, ref);
+ carr[0] = ast1;
+ carr[1] = ast2;
+
+ /* join via dsp (if the channels are currently open) */
+ ast_mutex_lock(&chan_lock);
+ bridge_id = new_bridge_id();
+ call1 = ast1->tech_pvt;
+ call2 = ast2->tech_pvt;
+ if (call1 && call2)
+ {
+ call1->bridge_id = bridge_id;
+ if (call1->bchannel)
+ bchannel_join(call1->bchannel, bridge_id);
+ call1->bridge_call = call2;
+ }
+ if (call2)
+ {
+ call2->bridge_id = bridge_id;
+ if (call2->bchannel)
+ bchannel_join(call2->bchannel, bridge_id);
+ call2->bridge_call = call1;
+ }
+ ast_mutex_unlock(&chan_lock);
+
+ while(1) {
+ to = -1;
+ who = ast_waitfor_n(carr, 2, &to);
- if (tmp) {
- tmp->tech = &lcr_tech;
- tmp->writeformat = AST_FORMAT_ALAW;
- tmp->readformat = AST_FORMAT_ALAW;
+ if (!who) {
+ CDEBUG(NULL, NULL, "Empty read on bridge, breaking out.\n");
+ break;
+ }
+ f = ast_read(who);
+
+ if (!f || f->frametype == AST_FRAME_CONTROL) {
+ if (!f)
+ CDEBUG(NULL, NULL, "Got hangup.\n");
+ else
+ CDEBUG(NULL, NULL, "Got CONTROL.\n");
+ /* got hangup .. */
+ *fo=f;
+ *rc=who;
+ break;
+ }
+
+ if ( f->frametype == AST_FRAME_DTMF ) {
+ CDEBUG(NULL, NULL, "Got DTMF.\n");
+ *fo=f;
+ *rc=who;
+ break;
+ }
+
- ast_copy_string(tmp->context, lcr_context, AST_MAX_CONTEXT);
+ if (who == ast1) {
+ ast_write(ast2,f);
+ }
+ else {
+ ast_write(ast1,f);
+ }
+
+ }
+
+ CDEBUG(NULL, NULL, "Releasing bride.\n");
+ /* split channels */
+ ast_mutex_lock(&chan_lock);
+ call1 = ast1->tech_pvt;
+ call2 = ast2->tech_pvt;
+ if (call1)
+ {
+ call1->bridge_id = 0;
+ if (call1->bchannel)
+ bchannel_join(call1->bchannel, 0);
+ if (call1->bridge_call)
+ call1->bridge_call->bridge_call = NULL;
+ call1->bridge_call = NULL;
+ }
+ if (call2)
+ {
+ call2->bridge_id = 0;
+ if (call2->bchannel)
+ bchannel_join(call2->bchannel, 0);
+ if (call2->bridge_call)
+ call2->bridge_call->bridge_call = NULL;
+ call2->bridge_call = NULL;
}
- return tmp;
+ ast_mutex_unlock(&chan_lock);
+ return AST_BRIDGE_COMPLETE;
}
-
+static struct ast_channel_tech lcr_tech = {
+ .type="LCR",
+ .description="Channel driver for connecting to Linux-Call-Router",
+ .requester=lcr_request,
+ .send_digit_begin=lcr_digit_begin,
+ .send_digit_end=lcr_digit_end,
+ .call=lcr_call,
+ .bridge=lcr_bridge,
+ .hangup=lcr_hangup,
+ .answer=lcr_answer,
+ .read=lcr_read,
+ .write=lcr_write,
+ .indicate=lcr_indicate,
+ .fixup=lcr_fixup,
+ .send_text=lcr_send_text,
+ .properties=0
+};
/*
* cli
*/
+#if 0
static int lcr_show_lcr (int fd, int argc, char *argv[])
{
+ return 0;
}
static int lcr_show_calls (int fd, int argc, char *argv[])
{
+ return 0;
}
static int lcr_reload_routing (int fd, int argc, char *argv[])
{
+ return 0;
}
static int lcr_reload_interfaces (int fd, int argc, char *argv[])
{
+ return 0;
}
static int lcr_port_block (int fd, int argc, char *argv[])
{
+ return 0;
}
static int lcr_port_unblock (int fd, int argc, char *argv[])
{
+ return 0;
}
static int lcr_port_unload (int fd, int argc, char *argv[])
{
+ return 0;
}
static struct ast_cli_entry cli_show_lcr =
"Unloads LCR port, port is closes by mISDN",
"Usage: lcr port unload \"<port>\"\n",
};
+#endif
+
+
+
+static int lcr_config_exec(struct ast_channel *ast, void *data)
+{
+ struct chan_call *call;
+
+ ast_mutex_lock(&chan_lock);
+ CDEBUG(NULL, ast, "Received lcr_config (data=%s)\n", (char *)data);
+ /* find channel */
+ call = call_first;
+ while(call) {
+ if (call->ast == ast)
+ break;
+ call = call->next;
+ }
+ if (call)
+ apply_opt(call, (char *)data);
+ else
+ CERROR(NULL, ast, "lcr_config app not called by chan_lcr channel.\n");
+ ast_mutex_unlock(&chan_lock);
+ return 0;
+}
/*
* module loading and destruction
*/
int load_module(void)
{
-// ast_mutex_init(&release_lock);
+ u_short i;
-// lcr_cfg_update_ptp();
+ for (i = 0; i < 256; i++) {
+ flip_bits[i] = (i>>7) | ((i>>5)&2) | ((i>>3)&4) | ((i>>1)&8)
+ | (i<<7) | ((i&2)<<5) | ((i&4)<<3) | ((i&8)<<1);
+ }
- pthread_mutex_init(&chan_lock, NULL);
-
- if (!(lcr_sock = open_socket())) {
- ast_log(LOG_ERROR, "Unable to connect\n");
- lcr_sock = -1;
+ if (read_options() == 0) {
+ CERROR(NULL, NULL, "%s", options_error);
+ return AST_MODULE_LOAD_DECLINE;
+ }
+
+ ast_mutex_init(&chan_lock);
+ ast_mutex_init(&log_lock);
+
+ if (open_socket() < 0) {
/* continue with closed socket */
}
- if (!bchannel_initialize()) {
- ast_log(LOG_ERROR, "Unable to open mISDN device\n");
- close_socket(lcr_sock);
- return -1;
+ if (bchannel_initialize()) {
+ CERROR(NULL, NULL, "Unable to open mISDN device\n");
+ close_socket();
+ return AST_MODULE_LOAD_DECLINE;
}
mISDN_created = 1;
+ lcr_tech.capabilities = (options.law=='a')?AST_FORMAT_ALAW:AST_FORMAT_ULAW;
if (ast_channel_register(&lcr_tech)) {
- ast_log(LOG_ERROR, "Unable to register channel class\n");
+ CERROR(NULL, NULL, "Unable to register channel class\n");
bchannel_deinitialize();
- close_socket(lcr_sock);
- return -1;
+ close_socket();
+ return AST_MODULE_LOAD_DECLINE;
}
+
+ ast_register_application("lcr_config", lcr_config_exec, "lcr_config",
+ "lcr_config(<opt><optarg>:<opt>:...)\n"
+ "Sets LCR opts. and optargs\n"
+ "\n"
+ "The available options are:\n"
+ " d - Send display text on called phone, text is the optarg.\n"
+ " n - Don't detect dtmf tones on called channel.\n"
+ " h - Force data call (HDLC).\n"
+ " t - Disable all audio features (required for fax application).\n"
+ " c - Make crypted outgoing call, optarg is keyindex.\n"
+ " e - Perform echo cancelation on this channel.\n"
+ " Takes mISDN pipeline option as optarg.\n"
+// " s - Send Non Inband DTMF as inband.\n"
+ " vr - rxgain control\n"
+ " vt - txgain control\n"
+ " Volume changes at factor 2 ^ optarg.\n"
+ );
+
#if 0
ast_cli_register(&cli_show_lcr);
ast_cli_register(&cli_show_calls);
-
ast_cli_register(&cli_reload_routing);
ast_cli_register(&cli_reload_interfaces);
ast_cli_register(&cli_port_block);
ast_cli_register(&cli_port_unblock);
ast_cli_register(&cli_port_unload);
-
- ast_register_application("misdn_set_opt", misdn_set_opt_exec, "misdn_set_opt",
- "misdn_set_opt(:<opt><optarg>:<opt><optarg>..):\n"
- "Sets mISDN opts. and optargs\n"
- "\n"
- "The available options are:\n"
- " d - Send display text on called phone, text is the optparam\n"
- " n - don't detect dtmf tones on called channel\n"
- " h - make digital outgoing call\n"
- " c - make crypted outgoing call, param is keyindex\n"
- " e - perform echo cancelation on this channel,\n"
- " takes taps as arguments (32,64,128,256)\n"
- " s - send Non Inband DTMF as inband\n"
- " vr - rxgain control\n"
- " vt - txgain control\n"
- );
-
-
- lcr_cfg_get( 0, LCR_GEN_TRACEFILE, global_tracefile, BUFFERSIZE);
-
- chan_lcr_log(0, 0, "-- mISDN Channel Driver Registred -- (BE AWARE THIS DRIVER IS EXPERIMENTAL!)\n");
-=======
- //lcr_cfg_get( 0, LCR_GEN_TRACEFILE, global_tracefile, BUFFERSIZE);
#endif
- quit = 1;
- if ((pthread_create(&chan_tid, NULL, chan_thread, arg)<0))
+ quit = 0;
+ if ((pthread_create(&chan_tid, NULL, chan_thread, NULL)<0))
{
- failed to create thread
+ /* failed to create thread */
bchannel_deinitialize();
- close_socket(lcr_sock);
+ close_socket();
ast_channel_unregister(&lcr_tech);
- return -1;
+ return AST_MODULE_LOAD_DECLINE;
}
return 0;
}
int unload_module(void)
{
/* First, take us out of the channel loop */
- ast_log(LOG_VERBOSE, "-- Unregistering mISDN Channel Driver --\n");
+ CDEBUG(NULL, NULL, "-- Unregistering mISDN Channel Driver --\n");
quit = 1;
pthread_join(chan_tid, NULL);
ast_channel_unregister(&lcr_tech);
+ ast_unregister_application("lcr_config");
+
+
if (mISDN_created) {
bchannel_deinitialize();
mISDN_created = 0;
return 0;
}
-static int reload_module(void)
+int reload_module(void)
{
// reload_config();
return 0;
}
-ast_mutex_t usecnt_lock;
-int usecnt;
-
-int usecount(void)
-{
- int res;
- ast_mutex_lock(&usecnt_lock);
- res = usecnt;
- ast_mutex_unlock(&usecnt_lock);
- return res;
-}
-
-
-char *desc="Channel driver for lcr";
-
-char *description(void)
-{
- return desc;
-}
-
-char *key(void)
-{
- return ASTERISK_GPL_KEY;
-}
-
#define AST_MODULE "chan_lcr"
-AST_MODULE_INFO(ASTERISK_GPL_KEY,
- AST_MODFLAG_DEFAULT,
- "Channel driver for LCR",
- .load = load_module,
- .unload = unload_module,
- .reload = reload_module,
- );
+
+AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT, "Channel driver for Linux-Call-Router Support (ISDN BRI/PRI)",
+ .load = load_module,
+ .unload = unload_module,
+ .reload = reload_module,
+ );
projects / lcr.git / blobdiff