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Handle optional Recommendation octet 3a in Cause IE.

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If the MSB of octet 3 is 0 then the optional Recommendation octet 3a is
present.

References: ITU-T Q.850 Section 2.1 and ETSI ETS 300 102-1 Section 4.5.12.

(closes issue PRI-151)
Reported by: Tzafrir Cohen
Patches:
      0001-handle-optional-Recommendation-in-Cause-IE.patch (license #5035) patch uploaded by Tzafrir Cohen
      Modified


git-svn-id: https://origsvn.digium.com/svn/libpri/branches/1.4@2310 2fbb986a-6c06-0410-b554-c9c1f0a7f128
This commit is contained in:
Richard Mudgett 2012-12-10 18:28:55 +00:00
parent 1a0927ca23
commit 28553ff8cb
1 changed files with 49 additions and 10 deletions
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59
q931.c
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@ -3475,38 +3475,73 @@ static char *pri_causeclass2str(int cause)
static void dump_cause(int full_ie, struct pri *ctrl, q931_ie *ie, int len, char prefix)
{
int x;
int cause_ind = 1;
int data_ind = 2;
pri_message(ctrl,
"%c %s (len=%2d) [ Ext: %d Coding: %s (%d) Spare: %d Location: %s (%d)\n",
prefix, ie2str(full_ie), len, ie->data[0] >> 7,
coding2str((ie->data[0] & 0x60) >> 5), (ie->data[0] & 0x60) >> 5,
(ie->data[0] & 0x10) >> 4, loc2str(ie->data[0] & 0xf), ie->data[0] & 0xf);
if ((ie->data[0] & 0x80) == 0) {
const char *recommendation;
switch (ie->data[1] & 0x7f) {
case 0x00:
recommendation = "Q.931";
break;
case 0x03:
recommendation = "X.21";
break;
case 0x04:
recommendation = "X.25";
break;
case 0x05:
recommendation = "Q.1031/Q.1051";
break;
default:
recommendation = "Reserved";
break;
}
pri_message(ctrl, "%c Ext: %d Recommendation: %s (%d)\n",
prefix, (ie->data[1] >> 7), recommendation, ie->data[1] & 0x7f);
cause_ind = 2;
data_ind = 3;
}
pri_message(ctrl, "%c Ext: %d Cause: %s (%d), class = %s (%d) ]\n",
prefix, (ie->data[1] >> 7), pri_cause2str(ie->data[1] & 0x7f), ie->data[1] & 0x7f,
pri_causeclass2str((ie->data[1] & 0x7f) >> 4), (ie->data[1] & 0x7f) >> 4);
if (ie->len < 3)
prefix, (ie->data[cause_ind] >> 7), pri_cause2str(ie->data[cause_ind] & 0x7f), ie->data[cause_ind] & 0x7f,
pri_causeclass2str((ie->data[cause_ind] & 0x7f) >> 4), (ie->data[cause_ind] & 0x7f) >> 4);
if (ie->len <= data_ind) {
return;
}
/* Dump cause data in readable form */
switch(ie->data[1] & 0x7f) {
switch(ie->data[cause_ind] & 0x7f) {
case PRI_CAUSE_IE_NONEXIST:
for (x=2;x<ie->len;x++)
for (x = data_ind; x < ie->len; x++) {
pri_message(ctrl, "%c Cause data %d: %02x (%d, %s IE)\n", prefix, x-1, ie->data[x], ie->data[x], ie2str(ie->data[x]));
}
break;
case PRI_CAUSE_WRONG_CALL_STATE:
for (x=2;x<ie->len;x++)
for (x = data_ind; x < ie->len; x++) {
pri_message(ctrl, "%c Cause data %d: %02x (%d, %s message)\n", prefix, x-1, ie->data[x], ie->data[x], msg2str(ie->data[x]));
}
break;
case PRI_CAUSE_RECOVERY_ON_TIMER_EXPIRE:
pri_message(ctrl, "%c Cause data:", prefix);
for (x=2;x<ie->len;x++)
for (x = data_ind; x < ie->len; x++) {
pri_message(ctrl, " %02x", ie->data[x]);
}
pri_message(ctrl, " (Timer T");
for (x=2;x<ie->len;x++)
for (x = data_ind; x < ie->len; x++) {
pri_message(ctrl, "%c", ((ie->data[x] >= ' ') && (ie->data[x] < 0x7f)) ? ie->data[x] : '.');
}
pri_message(ctrl, ")\n");
break;
default:
for (x=2;x<ie->len;x++)
for (x = data_ind; x < ie->len; x++) {
pri_message(ctrl, "%c Cause data %d: %02x (%d)\n", prefix, x-1, ie->data[x], ie->data[x]);
}
break;
}
}
@ -3515,7 +3550,11 @@ static int receive_cause(int full_ie, struct pri *ctrl, q931_call *call, int msg
{
call->causeloc = ie->data[0] & 0xf;
call->causecode = (ie->data[0] & 0x60) >> 5;
call->cause = (ie->data[1] & 0x7f);
if (ie->data[0] & 0x80) {
call->cause = (ie->data[1] & 0x7f);
} else {
call->cause = (ie->data[2] & 0x7f);
}
return 0;
}