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-rwxr-xr-xcallerid.c88
-rwxr-xr-xchannel.c457
-rwxr-xr-xinclude/asterisk/channel.h99
-rwxr-xr-xinclude/asterisk/channel_pvt.h10
4 files changed, 570 insertions, 84 deletions
diff --git a/callerid.c b/callerid.c
index 034b4e8a2..f78714fbf 100755
--- a/callerid.c
+++ b/callerid.c
@@ -24,6 +24,8 @@
#include <asterisk/callerid.h>
#include <asterisk/logger.h>
#include <asterisk/fskmodem.h>
+#include "sas.h"
+#include "cas.h"
struct callerid_state {
@@ -96,6 +98,33 @@ void callerid_get(struct callerid_state *cid, char **name, char **number, int *f
*number = cid->number;
}
+int ast_callerid_gen_cas(unsigned char *outbuf, int len)
+{
+ int pos = 0;
+ int cnt;
+ int saslen=2400;
+ if (len < saslen)
+ return -1;
+ while(saslen) {
+ cnt = saslen;
+ if (cnt > sizeof(sas))
+ cnt = sizeof(sas);
+ memcpy(outbuf + pos, sas, cnt);
+ pos += cnt;
+ len -= cnt;
+ saslen -= cnt;
+ }
+ while(len) {
+ cnt = len;
+ if (cnt > sizeof(cas))
+ cnt = sizeof(cas);
+ memcpy(outbuf + pos, cas, cnt);
+ pos += cnt;
+ len -= cnt;
+ }
+ return 0;
+}
+
int callerid_feed(struct callerid_state *cid, unsigned char *ubuf, int len)
{
int mylen = len;
@@ -363,7 +392,7 @@ static inline float callerid_getcarrier(float *cr, float *ci, int bit)
PUT_CLID_BAUD(1); /* Stop bit */ \
} while(0);
-int callerid_generate(unsigned char *buf, char *number, char *name, int flags)
+int callerid_generate(unsigned char *buf, char *number, char *name, int flags, int callwaiting)
{
int bytes=0;
int x, sum;
@@ -373,11 +402,14 @@ int callerid_generate(unsigned char *buf, char *number, char *name, int flags)
float scont = 0.0;
char msg[256];
callerid_genmsg(msg, sizeof(msg), number, name, flags);
- for (x=0;x<4000;x++)
- PUT_BYTE(0x7f);
- /* Transmit 30 0x55's (looks like a square wave */
- for (x=0;x<30;x++)
- PUT_CLID(0x55);
+ if (!callwaiting) {
+ /* Wait a half a second */
+ for (x=0;x<4000;x++)
+ PUT_BYTE(0x7f);
+ /* Transmit 30 0x55's (looks like a square wave) for channel seizure */
+ for (x=0;x<30;x++)
+ PUT_CLID(0x55);
+ }
/* Send 150ms of callerid marks */
for (x=0;x<150;x++)
PUT_CLID_MARKMS;
@@ -412,6 +444,8 @@ void ast_shrink_phone_number(char *n)
int ast_isphonenumber(char *n)
{
int x;
+ if (!n)
+ return 0;
for (x=0;n[x];x++)
if (!strchr("0123456789", n[x]))
return 0;
@@ -422,6 +456,7 @@ int ast_callerid_parse(char *instr, char **name, char **location)
{
char *ns, *ne;
char *ls, *le;
+ char tmp[256];
/* Try for "name" <location> format or
name <location> format */
if ((ls = strchr(instr, '<')) && (le = strchr(ls, '>'))) {
@@ -446,29 +481,46 @@ int ast_callerid_parse(char *instr, char **name, char **location)
return 0;
}
} else {
- /* Assume it's just a location */
- *name = NULL;
- *location = instr;
+ strncpy(tmp, instr, sizeof(tmp));
+ ast_shrink_phone_number(tmp);
+ if (!ast_isphonenumber(tmp)) {
+ /* Assume it's just a location */
+ *name = NULL;
+ *location = instr;
+ } else {
+ /* Assume it's just a name */
+ *name = instr;
+ *location = NULL;
+ }
return 0;
}
return -1;
}
-int ast_callerid_generate(unsigned char *buf, char *callerid)
+static int __ast_callerid_generate(unsigned char *buf, char *callerid, int callwaiting)
{
char tmp[256];
char *n, *l;
if (!callerid)
- return callerid_generate(buf, NULL, NULL, 0);
+ return callerid_generate(buf, NULL, NULL, 0, callwaiting);
strncpy(tmp, callerid, sizeof(tmp));
if (ast_callerid_parse(tmp, &n, &l)) {
ast_log(LOG_WARNING, "Unable to parse '%s' into CallerID name & number\n", callerid);
- return callerid_generate(buf, NULL, NULL, 0);
+ return callerid_generate(buf, NULL, NULL, 0, callwaiting);
}
- ast_shrink_phone_number(l);
- if (!n && (!ast_isphonenumber(l)))
- return callerid_generate(buf, NULL, NULL, 0);
- if (!ast_isphonenumber(l))
- return callerid_generate(buf, NULL, n, 0);
- return callerid_generate(buf, l, n, 0);
+ if (l)
+ ast_shrink_phone_number(l);
+ if (!ast_isphonenumber(l))
+ return callerid_generate(buf, NULL, n, 0, callwaiting);
+ return callerid_generate(buf, l, n, 0, callwaiting);
+}
+
+int ast_callerid_generate(unsigned char *buf, char *callerid)
+{
+ return __ast_callerid_generate(buf, callerid, 0);
+}
+
+int ast_callerid_callwaiting_generate(unsigned char *buf, char *callerid)
+{
+ return __ast_callerid_generate(buf, callerid, 1);
}
diff --git a/channel.c b/channel.c
index 3a53a640b..0f7200162 100755
--- a/channel.c
+++ b/channel.c
@@ -28,6 +28,7 @@
#include <asterisk/translate.h>
+/* XXX Lock appropriately in more functions XXX */
#ifdef DEBUG_MUTEX
/* Convenient mutex debugging functions */
@@ -36,16 +37,16 @@
static int __PTHREAD_MUTEX_LOCK(char *f, pthread_mutex_t *a) {
ast_log(LOG_DEBUG, "Locking %p (%s)\n", a, f);
- return pthread_mutex_lock(a);
+ return ast_pthread_mutex_lock(a);
}
static int __PTHREAD_MUTEX_UNLOCK(char *f, pthread_mutex_t *a) {
ast_log(LOG_DEBUG, "Unlocking %p (%s)\n", a, f);
- return pthread_mutex_unlock(a);
+ return ast_pthread_mutex_unlock(a);
}
#else
-#define PTHREAD_MUTEX_LOCK(a) pthread_mutex_lock(a)
-#define PTHREAD_MUTEX_UNLOCK(a) pthread_mutex_unlock(a)
+#define PTHREAD_MUTEX_LOCK(a) ast_pthread_mutex_lock(a)
+#define PTHREAD_MUTEX_UNLOCK(a) ast_pthread_mutex_unlock(a)
#endif
struct chanlist {
@@ -103,10 +104,35 @@ int ast_channel_register(char *type, char *description, int capabilities,
return 0;
}
+char *ast_state2str(int state)
+{
+ switch(state) {
+ case AST_STATE_DOWN:
+ return "Down";
+ case AST_STATE_RESERVED:
+ return "Rsrvd";
+ case AST_STATE_OFFHOOK:
+ return "OffHook";
+ case AST_STATE_DIALING:
+ return "Dialing";
+ case AST_STATE_RING:
+ return "Ring";
+ case AST_STATE_RINGING:
+ return "Ringing";
+ case AST_STATE_UP:
+ return "Up";
+ case AST_STATE_BUSY:
+ return "Busy";
+ default:
+ return "Unknown";
+ }
+}
+
struct ast_channel *ast_channel_alloc(void)
{
struct ast_channel *tmp;
struct ast_channel_pvt *pvt;
+ int x;
PTHREAD_MUTEX_LOCK(&chlock);
tmp = malloc(sizeof(struct ast_channel));
memset(tmp, 0, sizeof(struct ast_channel));
@@ -116,7 +142,8 @@ struct ast_channel *ast_channel_alloc(void)
memset(pvt, 0, sizeof(struct ast_channel_pvt));
tmp->sched = sched_context_create();
if (tmp->sched) {
- tmp->fd = -1;
+ for (x=0;x<AST_MAX_FDS;x++)
+ tmp->fds[x] = -1;
strncpy(tmp->name, "**Unknown**", sizeof(tmp->name));
tmp->pvt = pvt;
tmp->state = AST_STATE_DOWN;
@@ -206,16 +233,10 @@ void ast_channel_free(struct ast_channel *chan)
int ast_softhangup(struct ast_channel *chan)
{
int res = 0;
- if (chan->stream)
- ast_stopstream(chan);
if (option_debug)
ast_log(LOG_DEBUG, "Soft-Hanging up channel '%s'\n", chan->name);
- if (chan->pvt->hangup)
- res = chan->pvt->hangup(chan);
- if (chan->pvt->pvt)
- ast_log(LOG_WARNING, "Channel '%s' may not have been hung up properly\n", chan->name);
- if (chan->pbx)
- ast_log(LOG_WARNING, "PBX may not have been terminated properly on '%s'\n", chan->name);
+ /* Inform channel driver that we need to be hung up, if it cares */
+ chan->softhangup = 1;
/* Interrupt any select call or such */
if (chan->blocking)
pthread_kill(chan->blocker, SIGURG);
@@ -225,6 +246,16 @@ int ast_softhangup(struct ast_channel *chan)
int ast_hangup(struct ast_channel *chan)
{
int res = 0;
+ /* Don't actually hang up a channel that will masquerade as someone else, or
+ if someone is going to masquerade as us */
+ if (chan->masq)
+ return 0;
+ /* If this channel is one which will be masqueraded into something,
+ mark it as a zombie already, so we know to free it later */
+ if (chan->masqr) {
+ chan->zombie=1;
+ return 0;
+ }
if (chan->stream)
ast_stopstream(chan);
if (chan->sched)
@@ -235,10 +266,15 @@ int ast_hangup(struct ast_channel *chan)
pthread_self(), chan->name, chan->blocker, chan->blockproc);
CRASH;
}
- if (option_debug)
- ast_log(LOG_DEBUG, "Hanging up channel '%s'\n", chan->name);
- if (chan->pvt->hangup)
- res = chan->pvt->hangup(chan);
+ if (!chan->zombie) {
+ if (option_debug)
+ ast_log(LOG_DEBUG, "Hanging up channel '%s'\n", chan->name);
+ if (chan->pvt->hangup)
+ res = chan->pvt->hangup(chan);
+ } else
+ if (option_debug)
+ ast_log(LOG_DEBUG, "Hanging up zombie '%s'\n", chan->name);
+
ast_channel_free(chan);
return res;
}
@@ -271,10 +307,18 @@ void ast_channel_unregister(char *type)
int ast_answer(struct ast_channel *chan)
{
- /* Answer the line, if possible */
- if (chan->state == AST_STATE_RING) {
+ /* Stop if we're a zombie or need a soft hangup */
+ if (chan->zombie || chan->softhangup)
+ return -1;
+ switch(chan->state) {
+ case AST_STATE_RING:
+ case AST_STATE_RINGING:
if (chan->pvt->answer)
return chan->pvt->answer(chan);
+ chan->state = AST_STATE_UP;
+ break;
+ case AST_STATE_UP:
+ break;
}
return 0;
}
@@ -293,84 +337,125 @@ int ast_waitfor_n_fd(int *fds, int n, int *ms, int *exception)
FD_ZERO(&rfds);
FD_ZERO(&efds);
for (x=0;x<n;x++) {
- FD_SET(fds[x], &rfds);
- FD_SET(fds[x], &efds);
- if (fds[x] > max)
- max = fds[x];
+ if (fds[x] > -1) {
+ FD_SET(fds[x], &rfds);
+ FD_SET(fds[x], &efds);
+ if (fds[x] > max)
+ max = fds[x];
+ }
}
if (*ms >= 0)
res = select(max + 1, &rfds, NULL, &efds, &tv);
else
res = select(max + 1, &rfds, NULL, &efds, NULL);
+
+ if (res < 0) {
+ /* Simulate a timeout if we were interrupted */
+ if (errno != EINTR)
+ *ms = -1;
+ else
+ *ms = 0;
+ return -1;
+ }
+
for (x=0;x<n;x++) {
- if ((FD_ISSET(fds[x], &rfds) || FD_ISSET(fds[x], &efds)) && (winner < 0)) {
+ if ((fds[x] > -1) && (FD_ISSET(fds[x], &rfds) || FD_ISSET(fds[x], &efds)) && (winner < 0)) {
if (exception)
*exception = FD_ISSET(fds[x], &efds);
winner = fds[x];
}
}
*ms = tv.tv_sec * 1000 + tv.tv_usec / 1000;
- if (res < 0)
- *ms = -10;
return winner;
}
+static int ast_do_masquerade(struct ast_channel *original);
+
struct ast_channel *ast_waitfor_n(struct ast_channel **c, int n, int *ms)
{
/* Wait for x amount of time on a file descriptor to have input. */
struct timeval tv;
fd_set rfds, efds;
int res;
- int x, max=-1;
+ int x, y, max=-1;
struct ast_channel *winner = NULL;
+ /* Perform any pending masquerades */
+ for (x=0;x<n;x++) {
+ if (c[x]->masq) {
+ if (ast_do_masquerade(c[x])) {
+ ast_log(LOG_WARNING, "Masquerade failed\n");
+ *ms = -1;
+ return NULL;
+ }
+ }
+ }
+
tv.tv_sec = *ms / 1000;
tv.tv_usec = (*ms % 1000) * 1000;
FD_ZERO(&rfds);
FD_ZERO(&efds);
for (x=0;x<n;x++) {
- FD_SET(c[x]->fd, &rfds);
- FD_SET(c[x]->fd, &efds);
+ for (y=0;y<AST_MAX_FDS;y++) {
+ if (c[x]->fds[y] > 0) {
+ FD_SET(c[x]->fds[y], &rfds);
+ FD_SET(c[x]->fds[y], &efds);
+ if (c[x]->fds[y] > max)
+ max = c[x]->fds[y];
+ }
+ }
CHECK_BLOCKING(c[x]);
- if (c[x]->fd > max)
- max = c[x]->fd;
}
if (*ms >= 0)
res = select(max + 1, &rfds, NULL, &efds, &tv);
else
res = select(max + 1, &rfds, NULL, &efds, NULL);
+
+ if (res < 0) {
+ for (x=0;x<n;x++)
+ c[x]->blocking = 0;
+ /* Simulate a timeout if we were interrupted */
+ if (errno != EINTR)
+ *ms = -1;
+ else
+ *ms = 0;
+ return NULL;
+ }
+
for (x=0;x<n;x++) {
c[x]->blocking = 0;
- if ((FD_ISSET(c[x]->fd, &rfds) || FD_ISSET(c[x]->fd, &efds)) && !winner) {
- /* Set exception flag if appropriate */
- if (FD_ISSET(c[x]->fd, &efds))
- c[x]->exception = 1;
- winner = c[x];
+ for (y=0;y<AST_MAX_FDS;y++) {
+ if (c[x]->fds[y] > -1) {
+ if ((FD_ISSET(c[x]->fds[y], &rfds) || FD_ISSET(c[x]->fds[y], &efds)) && !winner) {
+ /* Set exception flag if appropriate */
+ if (FD_ISSET(c[x]->fds[y], &efds))
+ c[x]->exception = 1;
+ c[x]->fdno = y;
+ winner = c[x];
+ }
+ }
}
}
*ms = tv.tv_sec * 1000 + tv.tv_usec / 1000;
- if (res < 0)
- *ms = -10;
return winner;
}
int ast_waitfor(struct ast_channel *c, int ms)
{
- if (ast_waitfor_n(&c, 1, &ms)) {
- if (ms < 0)
- return -ms;
- return ms;
- }
- /* Error if ms < 0 */
- if (ms < 0)
+ struct ast_channel *chan;
+ chan = ast_waitfor_n(&c, 1, &ms);
+ if (ms < 0)
return -1;
- return 0;
+ return ms;
}
char ast_waitfordigit(struct ast_channel *c, int ms)
{
struct ast_frame *f;
char result = 0;
+ /* Stop if we're a zombie or need a soft hangup */
+ if (c->zombie || c->softhangup)
+ return -1;
/* Wait for a digit, no more than ms milliseconds total. */
while(ms && !result) {
ms = ast_waitfor(c, ms);
@@ -397,6 +482,24 @@ struct ast_frame *ast_read(struct ast_channel *chan)
{
AST_FRAME_NULL,
};
+
+ pthread_mutex_lock(&chan->lock);
+ if (chan->masq) {
+ if (ast_do_masquerade(chan)) {
+ ast_log(LOG_WARNING, "Failed to perform masquerade\n");
+ f = NULL;
+ } else
+ f = &null_frame;
+ pthread_mutex_unlock(&chan->lock);
+ return f;
+ }
+
+ /* Stop if we're a zombie or need a soft hangup */
+ if (chan->zombie || chan->softhangup) {
+ pthread_mutex_unlock(&chan->lock);
+ return NULL;
+ }
+
chan->blocker = pthread_self();
if (chan->exception) {
if (chan->pvt->exception)
@@ -417,12 +520,35 @@ struct ast_frame *ast_read(struct ast_channel *chan)
f = &null_frame;
}
}
+ /* Make sure we always return NULL in the future */
+ if (!f)
+ chan->softhangup = 1;
+ pthread_mutex_unlock(&chan->lock);
+
return f;
}
+int ast_indicate(struct ast_channel *chan, int condition)
+{
+ int res = -1;
+ /* Stop if we're a zombie or need a soft hangup */
+ if (chan->zombie || chan->softhangup)
+ return -1;
+ if (chan->pvt->indicate) {
+ res = chan->pvt->indicate(chan, condition);
+ if (res)
+ ast_log(LOG_WARNING, "Driver for channel '%s' failed to indicate condition %d\n", chan->name, condition);
+ } else
+ ast_log(LOG_WARNING, "Driver for channel '%s' does not support indication\n", chan->name);
+ return res;
+}
+
int ast_sendtext(struct ast_channel *chan, char *text)
{
int res = 0;
+ /* Stop if we're a zombie or need a soft hangup */
+ if (chan->zombie || chan->softhangup)
+ return -1;
CHECK_BLOCKING(chan);
if (chan->pvt->send_text)
res = chan->pvt->send_text(chan, text);
@@ -434,6 +560,18 @@ int ast_write(struct ast_channel *chan, struct ast_frame *fr)
{
int res = -1;
struct ast_frame *f;
+ /* Stop if we're a zombie or need a soft hangup */
+ if (chan->zombie || chan->softhangup)
+ return -1;
+ /* Handle any pending masquerades */
+ if (chan->masq) {
+ if (ast_do_masquerade(chan)) {
+ ast_log(LOG_WARNING, "Failed to perform masquerade\n");
+ return -1;
+ }
+ }
+ if (chan->masqr)
+ return 0;
CHECK_BLOCKING(chan);
switch(fr->frametype) {
case AST_FRAME_CONTROL:
@@ -453,6 +591,8 @@ int ast_write(struct ast_channel *chan, struct ast_frame *fr)
f = fr;
if (f)
res = chan->pvt->write(chan, f);
+ else
+ res = 0;
}
}
chan->blocking = 0;
@@ -483,7 +623,8 @@ int ast_set_write_format(struct ast_channel *chan, int fmts)
ast_translator_free_path(chan->pvt->writetrans);
/* Build a translation path from the user write format to the raw writing format */
chan->pvt->writetrans = ast_translator_build_path(chan->pvt->rawwriteformat, chan->writeformat);
- ast_log(LOG_DEBUG, "Set channel %s to format %d\n", chan->name, chan->writeformat);
+ if (option_debug)
+ ast_log(LOG_DEBUG, "Set channel %s to format %d\n", chan->name, chan->writeformat);
return 0;
}
@@ -555,8 +696,12 @@ int ast_call(struct ast_channel *chan, char *addr, int timeout)
If the remote end does not answer within the timeout, then do NOT hang up, but
return anyway. */
int res = -1;
- if (chan->pvt->call)
- res = chan->pvt->call(chan, addr, timeout);
+ /* Stop if we're a zombie or need a soft hangup */
+ pthread_mutex_lock(&chan->lock);
+ if (!chan->zombie && !chan->softhangup)
+ if (chan->pvt->call)
+ res = chan->pvt->call(chan, addr, timeout);
+ pthread_mutex_unlock(&chan->lock);
return res;
}
@@ -565,6 +710,9 @@ int ast_readstring(struct ast_channel *c, char *s, int len, int timeout, int fti
int pos=0;
int to = ftimeout;
char d;
+ /* Stop if we're a zombie or need a soft hangup */
+ if (c->zombie || c->softhangup)
+ return -1;
if (!len)
return -1;
do {
@@ -638,7 +786,134 @@ int ast_channel_make_compatible(struct ast_channel *chan, struct ast_channel *pe
return 0;
}
+int ast_channel_masquerade(struct ast_channel *original, struct ast_channel *clone)
+{
+ ast_log(LOG_DEBUG, "Planning to masquerade %s into the structure of %s\n",
+ clone->name, original->name);
+ if (original->masq) {
+ ast_log(LOG_WARNING, "%s is already going to masquerade as %s\n",
+ original->masq->name, original->name);
+ return -1;
+ }
+ if (clone->masqr) {
+ ast_log(LOG_WARNING, "%s is already going to masquerade as %s\n",
+ clone->name, clone->masqr->name);
+ return -1;
+ }
+ original->masq = clone;
+ clone->masqr = original;
+ return 0;
+}
+
+static int ast_do_masquerade(struct ast_channel *original)
+{
+ int x;
+ int res=0;
+ char *tmp;
+ struct ast_channel_pvt *p;
+ struct ast_channel *clone = original->masq;
+ ast_log(LOG_DEBUG, "Actually Masquerading %s(%d) into the structure of %s(%d)\n",
+ clone->name, clone->state, original->name, original->state);
+ /* XXX This is a seriously wacked out operation. We're essentially putting the guts of
+ the clone channel into the original channel. Start by killing off the original
+ channel's backend. I'm not sure we're going to keep this function, because
+ while the features are nice, the cost is very high in terms of pure nastiness. XXX */
+
+ /* We need the clone's lock, too */
+ pthread_mutex_lock(&clone->lock);
+
+ /* Unlink the masquerade */
+ original->masq = NULL;
+ clone->masqr = NULL;
+
+ /* Copy the name from the clone channel */
+ strncpy(original->name, clone->name, sizeof(original->name));
+
+ /* Mangle the name of the clone channel */
+ strncat(clone->name, "<MASQ>", sizeof(clone->name));
+
+ /* Swap the guts */
+ p = original->pvt;
+ original->pvt = clone->pvt;
+ clone->pvt = p;
+
+ /* Start by disconnecting the original's physical side */
+ if (clone->pvt->hangup)
+ res = clone->pvt->hangup(clone);
+ if (res) {
+ ast_log(LOG_WARNING, "Hangup failed! Strange things may happen!\n");
+ pthread_mutex_unlock(&clone->lock);
+ return -1;
+ }
+
+ /* Mangle the name of the clone channel */
+ snprintf(clone->name, sizeof(clone->name), "%s<ZOMBIE>", original->name);
+
+ /* Keep the same language. */
+ /* Update the type. */
+ original->type = clone->type;
+ /* Copy the FD's */
+ for (x=0;x<AST_MAX_FDS;x++)
+ original->fds[x] = clone->fds[x];
+ /* Bridge remains the same */
+ /* CDR fields remain the same */
+ /* XXX What about blocking, softhangup, blocker, and lock and blockproc? XXX */
+ /* Application and data remain the same */
+ /* Clone exception becomes real one, as with fdno */
+ original->exception = clone->exception;
+ original->fdno = clone->fdno;
+ /* Schedule context remains the same */
+ /* Stream stuff stays the same */
+ /* Keep the original state. The fixup code will need to work with it most likely */
+
+ /* dnid and callerid change to become the new, HOWEVER, we also link the original's
+ fields back into the defunct 'clone' so that they will be freed when
+ ast_frfree is eventually called */
+ tmp = original->dnid;
+ original->dnid = clone->dnid;
+ clone->dnid = tmp;
+
+ tmp = original->callerid;
+ original->callerid = clone->callerid;
+ clone->callerid = tmp;
+
+ /* Context, extension, priority, app data, jump table, remain the same */
+ /* pvt switches. pbx stays the same, as does next */
+
+ /* Now, at this point, the "clone" channel is totally F'd up. We mark it as
+ a zombie so nothing tries to touch it. If it's already been marked as a
+ zombie, then free it now (since it already is considered invalid). */
+ if (clone->zombie) {
+ pthread_mutex_unlock(&clone->lock);
+ ast_channel_free(clone);
+ } else {
+ clone->zombie=1;
+ pthread_mutex_unlock(&clone->lock);
+ }
+ /* Set the write format */
+ ast_set_write_format(original, original->writeformat);
+
+ /* Set the read format */
+ ast_set_read_format(original, original->readformat);
+ /* Okay. Last thing is to let the channel driver know about all this mess, so he
+ can fix up everything as best as possible */
+ if (original->pvt->fixup) {
+ res = original->pvt->fixup(clone, original);
+ if (res) {
+ ast_log(LOG_WARNING, "Driver for '%s' could not fixup channel %s\n",
+ original->type, original->name);
+ return -1;
+ }
+ } else
+ ast_log(LOG_WARNING, "Driver '%s' does not have a fixup routine (for %s)! Bad things may happen.\n",
+ original->type, original->name);
+
+ /* Signal any blocker */
+ if (original->blocking)
+ pthread_kill(original->blocker, SIGURG);
+ return 0;
+}
int ast_channel_bridge(struct ast_channel *c0, struct ast_channel *c1, int flags, struct ast_frame **fo, struct ast_channel **rc)
{
@@ -648,11 +923,33 @@ int ast_channel_bridge(struct ast_channel *c0, struct ast_channel *c1, int flags
int to = -1;
struct ast_frame *f;
struct ast_channel *who;
+ int res;
+ /* Stop if we're a zombie or need a soft hangup */
+ if (c0->zombie || c0->softhangup || c1->zombie || c1->softhangup)
+ return -1;
+ if (c0->bridge) {
+ ast_log(LOG_WARNING, "%s is already in a bridge with %s\n",
+ c0->name, c0->bridge->name);
+ return -1;
+ }
+ if (c1->bridge) {
+ ast_log(LOG_WARNING, "%s is already in a bridge with %s\n",
+ c1->name, c1->bridge->name);
+ return -1;
+ }
+
+ /* Keep track of bridge */
+ c0->bridge = c1;
+ c1->bridge = c0;
+
if (c0->pvt->bridge &&
(c0->pvt->bridge == c1->pvt->bridge)) {
/* Looks like they share a bridge code */
- if (!c0->pvt->bridge(c0, c1, flags, fo, rc))
+ if (!c0->pvt->bridge(c0, c1, flags, fo, rc)) {
+ c0->bridge = NULL;
+ c1->bridge = NULL;
return 0;
+ }
ast_log(LOG_WARNING, "Private bridge between %s and %s failed\n", c0->name, c1->name);
/* If they return non-zero then continue on normally */
}
@@ -664,36 +961,47 @@ int ast_channel_bridge(struct ast_channel *c0, struct ast_channel *c1, int flags
for (/* ever */;;) {
who = ast_waitfor_n(cs, 2, &to);
if (!who) {
- ast_log(LOG_WARNING, "Nobody there??\n");
+ ast_log(LOG_WARNING, "Nobody there??\n");
continue;
}
f = ast_read(who);
if (!f) {
*fo = NULL;
*rc = who;
- return 0;
+ res = 0;
+ break;
}
if ((f->frametype == AST_FRAME_CONTROL) && !(flags & AST_BRIDGE_IGNORE_SIGS)) {
*fo = f;
*rc = who;
- return 0;
+ res = 0;
+ break;
}
if ((f->frametype == AST_FRAME_VOICE) ||
(f->frametype == AST_FRAME_TEXT) ||
(f->frametype == AST_FRAME_VIDEO) ||
(f->frametype == AST_FRAME_IMAGE) ||
(f->frametype == AST_FRAME_DTMF)) {
- if ((f->frametype == AST_FRAME_DTMF) && (flags & (AST_BRIDGE_DTMF_CHANNEL_0 | AST_BRIDGE_DTMF_CHANNEL_1))) {
- if ((who == c0) && (flags & AST_BRIDGE_DTMF_CHANNEL_0)) {
- *rc = c0;
- *fo = f;
- /* Take out of conference mode */
- return 0;
+ if ((f->frametype == AST_FRAME_DTMF) &&
+ (flags & (AST_BRIDGE_DTMF_CHANNEL_0 | AST_BRIDGE_DTMF_CHANNEL_1))) {
+ if ((who == c0)) {
+ if ((flags & AST_BRIDGE_DTMF_CHANNEL_0)) {
+ *rc = c0;
+ *fo = f;
+ /* Take out of conference mode */
+ res = 0;
+ break;
+ } else
+ goto tackygoto;
} else
- if ((who == c1) && (flags & AST_BRIDGE_DTMF_CHANNEL_1)) {
- *rc = c1;
- *fo = f;
- return 0;
+ if ((who == c1)) {
+ if (flags & AST_BRIDGE_DTMF_CHANNEL_1) {
+ *rc = c1;
+ *fo = f;
+ res = 0;
+ break;
+ } else
+ goto tackygoto;
}
} else {
#if 0
@@ -702,6 +1010,7 @@ int ast_channel_bridge(struct ast_channel *c0, struct ast_channel *c1, int flags
ast_log(LOG_DEBUG, "Servicing channel %s twice in a row?\n", last->name);
last = who;
#endif
+tackygoto:
if (who == c0)
ast_write(c1, f);
else
@@ -715,5 +1024,27 @@ int ast_channel_bridge(struct ast_channel *c0, struct ast_channel *c1, int flags
cs[0] = cs[1];
cs[1] = cs[2];
}
+ c0->bridge = NULL;
+ c1->bridge = NULL;
+ return res;
+}
+
+int ast_channel_setoption(struct ast_channel *chan, int option, void *data, int datalen, int block)
+{
+ int res;
+ if (chan->pvt->setoption) {
+ res = chan->pvt->setoption(chan, option, data, datalen);
+ if (res < 0)
+ return res;
+ } else {
+ errno = ENOSYS;
+ return -1;
+ }
+ if (block) {
+ /* XXX Implement blocking -- just wait for our option frame reply, discarding
+ intermediate packets. XXX */
+ ast_log(LOG_ERROR, "XXX Blocking not implemented yet XXX\n");
+ return -1;
+ }
return 0;
}
diff --git a/include/asterisk/channel.h b/include/asterisk/channel.h
index 3f7d5e744..3d0a30277 100755
--- a/include/asterisk/channel.h
+++ b/include/asterisk/channel.h
@@ -25,6 +25,60 @@ extern "C" {
#include <pthread.h>
+#ifdef DEBUG_THREADS
+
+#define TRIES 500
+
+#include <errno.h>
+#include <string.h>
+#include <stdio.h>
+#include <unistd.h>
+
+struct mutex_info {
+ pthread_mutex_t *mutex;
+ char *file;
+ int lineno;
+ char *func;
+ struct mutex_info *next;
+};
+
+static inline int __ast_pthread_mutex_lock(char *filename, int lineno, char *func, pthread_mutex_t *t) {
+ int res;
+ int tries = TRIES;
+ do {
+ res = pthread_mutex_trylock(t);
+ /* If we can't run, yield */
+ if (res) {
+ sched_yield();
+ usleep(1);
+ }
+ } while(res && tries--);
+ if (res) {
+ fprintf(stderr, "%s line %d (%s): Error obtaining mutex: %s\n",
+ filename, lineno, func, strerror(res));
+ res = pthread_mutex_lock(t);
+ fprintf(stderr, "%s line %d (%s): Got it eventually...\n",
+ filename, lineno, func);
+ }
+ return res;
+}
+
+#define ast_pthread_mutex_lock(a) __ast_pthread_mutex_lock(__FILE__, __LINE__, __PRETTY_FUNCTION__, a)
+
+static inline int __ast_pthread_mutex_unlock(char *filename, int lineno, char *func, pthread_mutex_t *t) {
+ int res;
+ res = pthread_mutex_unlock(t);
+ if (res)
+ fprintf(stderr, "%s line %d (%s): Error releasing mutex: %s\n",
+ filename, lineno, func, strerror(res));
+ return res;
+}
+#define ast_pthread_mutex_unlock(a) __ast_pthread_mutex_unlock(__FILE__, __LINE__, __PRETTY_FUNCTION__, a)
+#else
+#define ast_pthread_mutex_lock pthread_mutex_lock
+#define ast_pthread_mutex_unlock pthread_mutex_unlock
+#endif
+
#define AST_CHANNEL_NAME 80
#define AST_CHANNEL_MAX_STACK 32
@@ -33,14 +87,24 @@ extern "C" {
/* Max length an extension can be (unique) is this number */
#define AST_MAX_EXTENSION 80
+#define AST_MAX_FDS 4
+
struct ast_channel {
char name[AST_CHANNEL_NAME]; /* ASCII Description of channel name */
char language[MAX_LANGUAGE]; /* Language requested */
char *type; /* Type of channel */
- int fd; /* File descriptor for channel -- all must have
- a file descriptor! */
+ int fds[AST_MAX_FDS]; /* File descriptor for channel -- Drivers will poll
+ on these file descriptors, so at least one must be
+ non -1. */
+ struct ast_channel *bridge; /* Who are we bridged to, if we're bridged */
+ struct ast_channel *masq; /* Channel that will masquerade as us */
+ struct ast_channel *masqr; /* Who we are masquerading as */
+ int cdrflags; /* Call Detail Record Flags */
+
int blocking; /* Whether or not we're blocking */
+ int softhangup; /* Whether or not we have been hung up */
+ int zombie; /* Non-zero if this is a zombie channel */
pthread_t blocker; /* If anyone is blocking, this is them */
pthread_mutex_t lock; /* Lock, can be used to lock a channel for some operations */
char *blockproc; /* Procedure causing blocking */
@@ -49,6 +113,7 @@ struct ast_channel {
char *data; /* Data passed to current application */
int exception; /* Has an exception been detected */
+ int fdno; /* Which fd had an event detected on */
struct sched_context *sched; /* Schedule context */
int streamid; /* For streaming playback, the schedule ID */
@@ -79,6 +144,11 @@ struct ast_channel {
};
+#define AST_CDR_TRANSFER (1 << 0)
+#define AST_CDR_FORWARD (1 << 1)
+#define AST_CDR_CALLWAIT (1 << 2)
+#define AST_CDR_CONFERENCE (1 << 3)
+
/* Bits 0-15 of state are reserved for the state (up/down) of the line */
#define AST_STATE_DOWN 0 /* Channel is down and available */
@@ -123,6 +193,9 @@ int ast_answer(struct ast_channel *chan);
the number of seconds the connect took otherwise. */
int ast_call(struct ast_channel *chan, char *addr, int timeout);
+/* Indicate a condition such as AST_CONTROL_BUSY, AST_CONTROL_RINGING, or AST_CONTROL_CONGESTION on a channel */
+int ast_indicate(struct ast_channel *chan, int condition);
+
/* Misc stuff */
/* Wait for input on a channel for a given # of milliseconds (<0 for indefinite).
@@ -180,6 +253,28 @@ int ast_channel_make_compatible(struct ast_channel *c0, struct ast_channel *c1);
*rf (remember, it could be NULL) and which channel (0 or 1) in rc */
int ast_channel_bridge(struct ast_channel *c0, struct ast_channel *c1, int flags, struct ast_frame **fo, struct ast_channel **rc);
+/* This is a very strange and freaky function used primarily for transfer. Suppose that
+ "original" and "clone" are two channels in random situations. This function takes
+ the guts out of "clone" and puts them into the "original" channel, then alerts the
+ channel driver of the change, asking it to fixup any private information (like the
+ p->owner pointer) that is affected by the change. The physical layer of the original
+ channel is hung up. */
+int ast_channel_masquerade(struct ast_channel *original, struct ast_channel *clone);
+
+/* Give a name to a state */
+char *ast_state2str(int state);
+
+/* Options: Some low-level drivers may implement "options" allowing fine tuning of the
+ low level channel. See frame.h for options. Note that many channel drivers may support
+ none or a subset of those features, and you should not count on this if you want your
+ asterisk application to be portable. They're mainly useful for tweaking performance */
+
+/* Set an option on a channel (see frame.h), optionally blocking awaiting the reply */
+int ast_channel_setoption(struct ast_channel *channel, int option, void *data, int datalen, int block);
+
+/* Query the value of an option, optionally blocking until a reply is received */
+struct ast_frame *ast_channel_queryoption(struct ast_channel *channel, int option, void *data, int *datalen, int block);
+
#ifdef DO_CRASH
#define CRASH do { *((int *)0) = 0; } while(0)
#else
diff --git a/include/asterisk/channel_pvt.h b/include/asterisk/channel_pvt.h
index 7fc464ebb..a8a2e654d 100755
--- a/include/asterisk/channel_pvt.h
+++ b/include/asterisk/channel_pvt.h
@@ -23,7 +23,7 @@ extern "C" {
struct ast_channel_pvt {
/* Private data used by channel backend */
- void *pvt;
+ void *pvt;
/* Write translation path */
struct ast_trans_pvt *writetrans;
/* Read translation path */
@@ -51,6 +51,14 @@ struct ast_channel_pvt {
struct ast_frame * (*exception)(struct ast_channel *chan);
/* Bridge two channels of the same type together */
int (*bridge)(struct ast_channel *c0, struct ast_channel *c1, int flags, struct ast_frame **fo, struct ast_channel **rc);
+ /* Indicate a particular condition (e.g. AST_CONTROL_BUSY or AST_CONTROL_RINGING or AST_CONTROL_CONGESTION */
+ int (*indicate)(struct ast_channel *c, int condition);
+ /* Fix up a channel: If a channel is consumed, this is called. Basically update any ->owner links */
+ int (*fixup)(struct ast_channel *oldchan, struct ast_channel *newchan);
+ /* Set a given option */
+ int (*setoption)(struct ast_channel *chan, int option, void *data, int datalen);
+ /* Query a given option */
+ int (*queryoption)(struct ast_channel *chan, int option, void *data, int *datalen);
};
/* Create a channel structure */
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-22 06:23:49 +0000