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Fix CallingNum IE decoding to allow zero-length "numbers" 

git-svn-id: http://svn.openzap.org/svn/openzap/trunk@551 a93c3328-9c30-0410-af19-c9cd2b2d52af
This commit is contained in:
Stefan Knoblich 2008-09-09 21:10:18 +00:00
parent 3e7e87f799
commit 395f54b32f
1 changed files with 9 additions and 7 deletions
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16
libs/freetdm/src/isdn/Q931ie.c
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@ -765,7 +765,7 @@ L3INT Q931Uie_CallingNum(Q931_TrunkInfo_t *pTrunk, Q931mes_Generic *pMsg, L3UCHA
/* Octet 3 */
pie->TypNum = (IBuf[Octet + Off] >> 4) & 0x07;
pie->NumPlanID = IBuf[Octet + Off] & 0x0f;
/* Octet 3a */
if ((IBuf[Octet + Off] & 0x80) == 0) {
Off++;
@ -774,14 +774,16 @@ L3INT Q931Uie_CallingNum(Q931_TrunkInfo_t *pTrunk, Q931mes_Generic *pMsg, L3UCHA
}
Octet++;
/* Octet 4*/
/* Octet 4 */
x = 0;
do {
pie->Digit[x] = IBuf[Octet + Off] & 0x7f;
Off++;
x++;
} while ((IBuf[Octet + Off]&0x80) == 0 && Q931MoreIE());
while (Q931MoreIE()) {
pie->Digit[x++] = IBuf[Octet + Off] & 0x7f;
if ((IBuf[Octet + Off] & 0x80) != 0) {
break;
}
Off++;
}
pie->Digit[x] = '\0';
Q931IESizeTest(Q931E_CALLINGNUM);