q931.c
/* q931.c.shtml,v 1.1.1.1 2002/08/19 05:50:13 fritz Exp
* q931.c code to decode ITU Q.931 call control messages
*
* Author Jan den Ouden
*
* Changelog
*
* Pauline Middelink general improvements
*
* Beat Doebeli cause texts, display information element
*
* Karsten Keil cause texts, display information element for 1TR6
*
*
* q931.c.shtml,v
* Revision 1.1.1.1 2002/08/19 05:50:13 fritz
* - initial import
*
* Revision 1.6 1997/07/27 21:09:44 keil
* move functions to isdnl3.c
*
* Revision 1.5 1997/04/06 22:56:43 keil
* Some cosmetic changes
*
* Revision 1.4 1997/02/09 00:29:11 keil
* new interface handling, one interface per card
*
* Revision 1.3 1997/01/21 22:24:59 keil
* cleanups
*
* Revision 1.2 1996/10/27 22:12:45 keil
* reporting unknown level 3 protocol ids
*
* Revision 1.1 1996/10/13 20:04:56 keil
* Initial revision
*
*
*/
#define __NO_VERSION__
#include "hisax.h"
#include "l3_1tr6.h"
void
iecpy(u_char * dest, u_char * iestart, int ieoffset)
{
u_char *p;
int l;
p = iestart + ieoffset + 2;
l = iestart[1] - ieoffset;
while (l--)
*dest++ = *p++;
*dest++ = '\0';
}
/*
* According to Table 4-2/Q.931
*/
static
struct MessageType {
u_char nr;
char *descr;
} mtlist[] = {
{
0x1, "ALERTING"
},
{
0x2, "CALL PROCEEDING"
},
{
0x7, "CONNECT"
},
{
0xf, "CONNECT ACKNOWLEDGE"
},
{
0x3, "PROGRESS"
},
{
0x5, "SETUP"
},
{
0xd, "SETUP ACKNOWLEDGE"
},
{
0x26, "RESUME"
},
{
0x2e, "RESUME ACKNOWLEDGE"
},
{
0x22, "RESUME REJECT"
},
{
0x25, "SUSPEND"
},
{
0x2d, "SUSPEND ACKNOWLEDGE"
},
{
0x21, "SUSPEND REJECT"
},
{
0x20, "USER INFORMATION"
},
{
0x45, "DISCONNECT"
},
{
0x4d, "RELEASE"
},
{
0x5a, "RELEASE COMPLETE"
},
{
0x46, "RESTART"
},
{
0x4e, "RESTART ACKNOWLEDGE"
},
{
0x60, "SEGMENT"
},
{
0x79, "CONGESTION CONTROL"
},
{
0x7b, "INFORMATION"
},
{
0x62, "FACILITY"
},
{
0x6e, "NOTIFY"
},
{
0x7d, "STATUS"
},
{
0x75, "STATUS ENQUIRY"
}
};
#define MTSIZE sizeof(mtlist)/sizeof(struct MessageType)
static
struct MessageType mt_n0[] =
{
{MT_N0_REG_IND, "REGister INDication"},
{MT_N0_CANC_IND, "CANCel INDication"},
{MT_N0_FAC_STA, "FACility STAtus"},
{MT_N0_STA_ACK, "STAtus ACKnowledge"},
{MT_N0_STA_REJ, "STAtus REJect"},
{MT_N0_FAC_INF, "FACility INFormation"},
{MT_N0_INF_ACK, "INFormation ACKnowledge"},
{MT_N0_INF_REJ, "INFormation REJect"},
{MT_N0_CLOSE, "CLOSE"},
{MT_N0_CLO_ACK, "CLOse ACKnowledge"}
};
int mt_n0_len = (sizeof(mt_n0) / sizeof(struct MessageType));
static
struct MessageType mt_n1[] =
{
{MT_N1_ESC, "ESCape"},
{MT_N1_ALERT, "ALERT"},
{MT_N1_CALL_SENT, "CALL SENT"},
{MT_N1_CONN, "CONNect"},
{MT_N1_CONN_ACK, "CONNect ACKnowledge"},
{MT_N1_SETUP, "SETUP"},
{MT_N1_SETUP_ACK, "SETUP ACKnowledge"},
{MT_N1_RES, "RESume"},
{MT_N1_RES_ACK, "RESume ACKnowledge"},
{MT_N1_RES_REJ, "RESume REJect"},
{MT_N1_SUSP, "SUSPend"},
{MT_N1_SUSP_ACK, "SUSPend ACKnowledge"},
{MT_N1_SUSP_REJ, "SUSPend REJect"},
{MT_N1_USER_INFO, "USER INFO"},
{MT_N1_DET, "DETach"},
{MT_N1_DISC, "DISConnect"},
{MT_N1_REL, "RELease"},
{MT_N1_REL_ACK, "RELease ACKnowledge"},
{MT_N1_CANC_ACK, "CANCel ACKnowledge"},
{MT_N1_CANC_REJ, "CANCel REJect"},
{MT_N1_CON_CON, "CONgestion CONtrol"},
{MT_N1_FAC, "FACility"},
{MT_N1_FAC_ACK, "FACility ACKnowledge"},
{MT_N1_FAC_CAN, "FACility CANcel"},
{MT_N1_FAC_REG, "FACility REGister"},
{MT_N1_FAC_REJ, "FACility REJect"},
{MT_N1_INFO, "INFOrmation"},
{MT_N1_REG_ACK, "REGister ACKnowledge"},
{MT_N1_REG_REJ, "REGister REJect"},
{MT_N1_STAT, "STATus"}
};
int mt_n1_len = (sizeof(mt_n1) / sizeof(struct MessageType));
static struct MessageType fac_1tr6[] =
{
{FAC_Sperre, "Sperre"},
{FAC_Forward1, "Forward 1"},
{FAC_Forward2, "Forward 2"},
{FAC_Konferenz, "Konferenz"},
{FAC_GrabBchan, "Grab Bchannel"},
{FAC_Reactivate, "Reactivate"},
{FAC_Konferenz3, "Dreier Konferenz"},
{FAC_Dienstwechsel1, "Einseitiger Dienstwechsel"},
{FAC_Dienstwechsel2, "Zweiseitiger Dienstwechsel"},
{FAC_NummernIdent, "Rufnummer-Identifizierung"},
{FAC_GBG, "GBG"},
{FAC_DisplayUebergeben, "Display Uebergeben"},
{FAC_DisplayUmgeleitet, "Display Umgeleitet"},
{FAC_Unterdruecke, "Unterdruecke Rufnummer"},
{FAC_Deactivate, "Deactivate"},
{FAC_Activate, "Activate"},
{FAC_SPV, "SPV"},
{FAC_Rueckwechsel, "Rueckwechsel"},
{FAC_Umleitung, "Umleitung"}
};
int fac_1tr6_len = (sizeof(fac_1tr6) / sizeof(struct MessageType));
static int
prbits(char *dest, u_char b, int start, int len)
{
char *dp = dest;
b = b << (8 - start);
while (len--) {
if (b & 0x80)
*dp++ = '1';
else
*dp++ = '0';
b = b << 1;
}
return (dp - dest);
}
static
u_char *
skipext(u_char * p)
{
while (!(*p++ & 0x80));
return (p);
}
/*
* Cause Values According to Q.850
* edescr: English description
* ddescr: German description used by Swissnet II (Swiss Telecom
* not yet written...
*/
static
struct CauseValue {
u_char nr;
char *edescr;
char *ddescr;
} cvlist[] = {
{
0x01, "Unallocated (unassigned) number", "Nummer nicht zugeteilt"
},
{
0x02, "No route to specified transit network", ""
},
{
0x03, "No route to destination", ""
},
{
0x04, "Send special information tone", ""
},
{
0x05, "Misdialled trunk prefix", ""
},
{
0x06, "Channel unacceptable", "Kanal nicht akzeptierbar"
},
{
0x07, "Channel awarded and being delivered in an established channel", ""
},
{
0x08, "Preemption", ""
},
{
0x09, "Preemption - circuit reserved for reuse", ""
},
{
0x10, "Normal call clearing", "Normale Ausloesung"
},
{
0x11, "User busy", "TNB besetzt"
},
{
0x12, "No user responding", ""
},
{
0x13, "No answer from user (user alerted)", ""
},
{
0x14, "Subscriber absent", ""
},
{
0x15, "Call rejected", ""
},
{
0x16, "Number changed", ""
},
{
0x1a, "non-selected user clearing", ""
},
{
0x1b, "Destination out of order", ""
},
{
0x1c, "Invalid number format (address incomplete)", ""
},
{
0x1d, "Facility rejected", ""
},
{
0x1e, "Response to Status enquiry", ""
},
{
0x1f, "Normal, unspecified", ""
},
{
0x22, "No circuit/channel available", ""
},
{
0x26, "Network out of order", ""
},
{
0x27, "Permanent frame mode connection out-of-service", ""
},
{
0x28, "Permanent frame mode connection operational", ""
},
{
0x29, "Temporary failure", ""
},
{
0x2a, "Switching equipment congestion", ""
},
{
0x2b, "Access information discarded", ""
},
{
0x2c, "Requested circuit/channel not available", ""
},
{
0x2e, "Precedence call blocked", ""
},
{
0x2f, "Resource unavailable, unspecified", ""
},
{
0x31, "Quality of service unavailable", ""
},
{
0x32, "Requested facility not subscribed", ""
},
{
0x35, "Outgoing calls barred within CUG", ""
},
{
0x37, "Incoming calls barred within CUG", ""
},
{
0x39, "Bearer capability not authorized", ""
},
{
0x3a, "Bearer capability not presently available", ""
},
{
0x3e, "Inconsistency in designated outgoing access information and subscriber class ", " "
},
{
0x3f, "Service or option not available, unspecified", ""
},
{
0x41, "Bearer capability not implemented", ""
},
{
0x42, "Channel type not implemented", ""
},
{
0x43, "Requested facility not implemented", ""
},
{
0x44, "Only restricted digital information bearer capability is available", ""
},
{
0x4f, "Service or option not implemented", ""
},
{
0x51, "Invalid call reference value", ""
},
{
0x52, "Identified channel does not exist", ""
},
{
0x53, "A suspended call exists, but this call identity does not", ""
},
{
0x54, "Call identity in use", ""
},
{
0x55, "No call suspended", ""
},
{
0x56, "Call having the requested call identity has been cleared", ""
},
{
0x57, "User not member of CUG", ""
},
{
0x58, "Incompatible destination", ""
},
{
0x5a, "Non-existent CUG", ""
},
{
0x5b, "Invalid transit network selection", ""
},
{
0x5f, "Invalid message, unspecified", ""
},
{
0x60, "Mandatory information element is missing", ""
},
{
0x61, "Message type non-existent or not implemented", ""
},
{
0x62, "Message not compatible with call state or message type non-existent or not implemented ", " "
},
{
0x63, "Information element/parameter non-existent or not implemented", ""
},
{
0x64, "Invalid information element contents", ""
},
{
0x65, "Message not compatible with call state", ""
},
{
0x66, "Recovery on timer expiry", ""
},
{
0x67, "Parameter non-existent or not implemented - passed on", ""
},
{
0x6e, "Message with unrecognized parameter discarded", ""
},
{
0x6f, "Protocol error, unspecified", ""
},
{
0x7f, "Interworking, unspecified", ""
},
};
#define CVSIZE sizeof(cvlist)/sizeof(struct CauseValue)
static
int
prcause(char *dest, u_char * p)
{
u_char *end;
char *dp = dest;
int i, cause;
end = p + p[1] + 1;
p += 2;
dp += sprintf(dp, " coding ");
dp += prbits(dp, *p, 7, 2);
dp += sprintf(dp, " location ");
dp += prbits(dp, *p, 4, 4);
*dp++ = '\n';
p = skipext(p);
cause = 0x7f & *p++;
/* locate cause value */
for (i = 0; i < CVSIZE; i++)
if (cvlist[i].nr == cause)
break;
/* display cause value if it exists */
if (i == CVSIZE)
dp += sprintf(dp, "Unknown cause type %x!\n", cause);
else
dp += sprintf(dp, " cause value %x : %s \n", cause, cvlist[i].edescr);
while (!0) {
if (p > end)
break;
dp += sprintf(dp, " diag attribute %d ", *p++ & 0x7f);
dp += sprintf(dp, " rej %d ", *p & 0x7f);
if (*p & 0x80) {
*dp++ = '\n';
break;
} else
dp += sprintf(dp, " av %d\n", (*++p) & 0x7f);
}
return (dp - dest);
}
static
struct MessageType cause_1tr6[] =
{
{CAUSE_InvCRef, "Invalid Call Reference"},
{CAUSE_BearerNotImpl, "Bearer Service Not Implemented"},
{CAUSE_CIDunknown, "Caller Identity unknown"},
{CAUSE_CIDinUse, "Caller Identity in Use"},
{CAUSE_NoChans, "No Channels available"},
{CAUSE_FacNotImpl, "Facility Not Implemented"},
{CAUSE_FacNotSubscr, "Facility Not Subscribed"},
{CAUSE_OutgoingBarred, "Outgoing calls barred"},
{CAUSE_UserAccessBusy, "User Access Busy"},
{CAUSE_NegativeGBG, "Negative GBG"},
{CAUSE_UnknownGBG, "Unknown GBG"},
{CAUSE_NoSPVknown, "No SPV known"},
{CAUSE_DestNotObtain, "Destination not obtainable"},
{CAUSE_NumberChanged, "Number changed"},
{CAUSE_OutOfOrder, "Out Of Order"},
{CAUSE_NoUserResponse, "No User Response"},
{CAUSE_UserBusy, "User Busy"},
{CAUSE_IncomingBarred, "Incoming Barred"},
{CAUSE_CallRejected, "Call Rejected"},
{CAUSE_NetworkCongestion, "Network Congestion"},
{CAUSE_RemoteUser, "Remote User initiated"},
{CAUSE_LocalProcErr, "Local Procedure Error"},
{CAUSE_RemoteProcErr, "Remote Procedure Error"},
{CAUSE_RemoteUserSuspend, "Remote User Suspend"},
{CAUSE_RemoteUserResumed, "Remote User Resumed"},
{CAUSE_UserInfoDiscarded, "User Info Discarded"}
};
int cause_1tr6_len = (sizeof(cause_1tr6) / sizeof(struct MessageType));
static int
prcause_1tr6(char *dest, u_char * p)
{
char *dp = dest;
int i, cause;
p++;
if (0 == *p) {
dp += sprintf(dp, " OK (cause length=0)\n");
return (dp - dest);
} else if (*p > 1) {
dp += sprintf(dp, " coding ");
dp += prbits(dp, p[2], 7, 2);
dp += sprintf(dp, " location ");
dp += prbits(dp, p[2], 4, 4);
*dp++ = '\n';
}
p++;
cause = 0x7f & *p;
/* locate cause value */
for (i = 0; i < cause_1tr6_len; i++)
if (cause_1tr6[i].nr == cause)
break;
/* display cause value if it exists */
if (i == cause_1tr6_len)
dp += sprintf(dp, "Unknown cause type %x!\n", cause);
else
dp += sprintf(dp, " cause value %x : %s \n", cause, cause_1tr6[i].descr);
return (dp - dest);
}
static int
prchident(char *dest, u_char * p)
{
char *dp = dest;
p += 2;
dp += sprintf(dp, " octet 3 ");
dp += prbits(dp, *p, 8, 8);
*dp++ = '\n';
return (dp - dest);
}
static int
prcalled(char *dest, u_char * p)
{
int l;
char *dp = dest;
p++;
l = *p++ - 1;
dp += sprintf(dp, " octet 3 ");
dp += prbits(dp, *p++, 8, 8);
*dp++ = '\n';
dp += sprintf(dp, " number digits ");
while (l--)
*dp++ = *p++;
*dp++ = '\n';
return (dp - dest);
}
static int
prcalling(char *dest, u_char * p)
{
int l;
char *dp = dest;
p++;
l = *p++ - 1;
dp += sprintf(dp, " octet 3 ");
dp += prbits(dp, *p, 8, 8);
*dp++ = '\n';
if (!(*p & 0x80)) {
dp += sprintf(dp, " octet 3a ");
dp += prbits(dp, *++p, 8, 8);
*dp++ = '\n';
l--;
};
p++;
dp += sprintf(dp, " number digits ");
while (l--)
*dp++ = *p++;
*dp++ = '\n';
return (dp - dest);
}
static
int
prbearer(char *dest, u_char * p)
{
char *dp = dest, ch;
p += 2;
dp += sprintf(dp, " octet 3 ");
dp += prbits(dp, *p++, 8, 8);
*dp++ = '\n';
dp += sprintf(dp, " octet 4 ");
dp += prbits(dp, *p, 8, 8);
*dp++ = '\n';
if ((*p++ & 0x1f) == 0x18) {
dp += sprintf(dp, " octet 4.1 ");
dp += prbits(dp, *p++, 8, 8);
*dp++ = '\n';
}
/* check for user information layer 1 */
if ((*p & 0x60) == 0x20) {
ch = ' ';
do {
dp += sprintf(dp, " octet 5%c ", ch);
dp += prbits(dp, *p, 8, 8);
*dp++ = '\n';
if (ch == ' ')
ch = 'a';
else
ch++;
}
while (!(*p++ & 0x80));
}
/* check for user information layer 2 */
if ((*p & 0x60) == 0x40) {
dp += sprintf(dp, " octet 6 ");
dp += prbits(dp, *p++, 8, 8);
*dp++ = '\n';
}
/* check for user information layer 3 */
if ((*p & 0x60) == 0x60) {
dp += sprintf(dp, " octet 7 ");
dp += prbits(dp, *p++, 8, 8);
*dp++ = '\n';
}
return (dp - dest);
}
static int
general(char *dest, u_char * p)
{
char *dp = dest;
char ch = ' ';
int l, octet = 3;
p++;
l = *p++;
/* Iterate over all octets in the information element */
while (l--) {
dp += sprintf(dp, " octet %d%c ", octet, ch);
dp += prbits(dp, *p++, 8, 8);
*dp++ = '\n';
/* last octet in group? */
if (*p & 0x80) {
octet++;
ch = ' ';
} else if (ch == ' ')
ch = 'a';
else
ch++;
}
return (dp - dest);
}
static int
prcharge(char *dest, u_char * p)
{
char *dp = dest;
int l;
p++;
l = *p++ - 1;
dp += sprintf(dp, " GEA ");
dp += prbits(dp, *p++, 8, 8);
dp += sprintf(dp, " Anzahl: ");
/* Iterate over all octets in the * information element */
while (l--)
*dp++ = *p++;
*dp++ = '\n';
return (dp - dest);
}
static int
prtext(char *dest, u_char * p)
{
char *dp = dest;
int l;
p++;
l = *p++;
dp += sprintf(dp, " ");
/* Iterate over all octets in the * information element */
while (l--)
*dp++ = *p++;
*dp++ = '\n';
return (dp - dest);
}
static int
display(char *dest, u_char * p)
{
char *dp = dest;
char ch = ' ';
int l, octet = 3;
p++;
l = *p++;
/* Iterate over all octets in the * display-information element */
dp += sprintf(dp, " \"");
while (l--) {
dp += sprintf(dp, "%c", *p++);
/* last octet in group? */
if (*p & 0x80) {
octet++;
ch = ' ';
} else if (ch == ' ')
ch = 'a';
else
ch++;
}
*dp++ = '\"';
*dp++ = '\n';
return (dp - dest);
}
int
prfacility(char *dest, u_char * p)
{
char *dp = dest;
int l, l2;
p++;
l = *p++;
dp += sprintf(dp, " octet 3 ");
dp += prbits(dp, *p++, 8, 8);
dp += sprintf(dp, "\n");
l -= 1;
while (l > 0) {
dp += sprintf(dp, " octet 4 ");
dp += prbits(dp, *p++, 8, 8);
dp += sprintf(dp, "\n");
dp += sprintf(dp, " octet 5 %d\n", l2 = *p++ & 0x7f);
l -= 2;
dp += sprintf(dp, " contents ");
while (l2--) {
dp += sprintf(dp, "%2x ", *p++);
l--;
}
dp += sprintf(dp, "\n");
}
return (dp - dest);
}
static
struct InformationElement {
u_char nr;
char *descr;
int (*f) (char *, u_char *);
} ielist[] = {
{
0x00, "Segmented message", general
},
{
0x04, "Bearer capability", prbearer
},
{
0x08, "Cause", prcause
},
{
0x10, "Call identity", general
},
{
0x14, "Call state", general
},
{
0x18, "Channel identification", prchident
},
{
0x1c, "Facility", prfacility
},
{
0x1e, "Progress indicator", general
},
{
0x20, "Network-specific facilities", general
},
{
0x27, "Notification indicator", general
},
{
0x28, "Display", display
},
{
0x29, "Date/Time", general
},
{
0x2c, "Keypad facility", general
},
{
0x34, "Signal", general
},
{
0x40, "Information rate", general
},
{
0x42, "End-to-end delay", general
},
{
0x43, "Transit delay selection and indication", general
},
{
0x44, "Packet layer binary parameters", general
},
{
0x45, "Packet layer window size", general
},
{
0x46, "Packet size", general
},
{
0x47, "Closed user group", general
},
{
0x4a, "Reverse charge indication", general
},
{
0x6c, "Calling party number", prcalling
},
{
0x6d, "Calling party subaddress", general
},
{
0x70, "Called party number", prcalled
},
{
0x71, "Called party subaddress", general
},
{
0x74, "Redirecting number", general
},
{
0x78, "Transit network selection", general
},
{
0x79, "Restart indicator", general
},
{
0x7c, "Low layer compatibility", general
},
{
0x7d, "High layer compatibility", general
},
{
0x7e, "User-user", general
},
{
0x7f, "Escape for extension", general
},
};
#define IESIZE sizeof(ielist)/sizeof(struct InformationElement)
static struct InformationElement we_0[] =
{
{WE0_cause, "Cause", prcause_1tr6},
{WE0_connAddr, "Connecting Address", prcalled},
{WE0_callID, "Call IDentity", general},
{WE0_chanID, "Channel IDentity", general},
{WE0_netSpecFac, "Network Specific Facility", general},
{WE0_display, "Display", general},
{WE0_keypad, "Keypad", general},
{WE0_origAddr, "Origination Address", prcalled},
{WE0_destAddr, "Destination Address", prcalled},
{WE0_userInfo, "User Info", general}
};
static int we_0_len = (sizeof(we_0) / sizeof(struct InformationElement));
static struct InformationElement we_6[] =
{
{WE6_serviceInd, "Service Indicator", general},
{WE6_chargingInfo, "Charging Information", prcharge},
{WE6_date, "Date", prtext},
{WE6_facSelect, "Facility Select", general},
{WE6_facStatus, "Facility Status", general},
{WE6_statusCalled, "Status Called", general},
{WE6_addTransAttr, "Additional Transmission Attributes", general}
};
static int we_6_len = (sizeof(we_6) / sizeof(struct InformationElement));
int
QuickHex(char *txt, u_char * p, int cnt)
{
register int i;
register char *t = txt;
register u_char w;
for (i = 0; i < cnt; i++) {
*t++ = ' ';
w = (p[i] >> 4) & 0x0f;
if (w < 10)
*t++ = '0' + w;
else
*t++ = 'A' - 10 + w;
w = p[i] & 0x0f;
if (w < 10)
*t++ = '0' + w;
else
*t++ = 'A' - 10 + w;
}
*t++ = 0;
return (t - txt);
}
void
LogFrame(struct IsdnCardState *sp, u_char * buf, int size)
{
char *dp;
if (size < 1)
return;
dp = sp->dlogspace;
if (size < 4096 / 3 - 10) {
dp += sprintf(dp, "HEX:");
dp += QuickHex(dp, buf, size);
dp--;
*dp++ = '\n';
*dp = 0;
} else
sprintf(dp, "LogFrame: warning Frame too big (%d)\n",
size);
HiSax_putstatus(sp, sp->dlogspace);
}
void
dlogframe(struct IsdnCardState *sp, u_char * buf, int size, char *comment)
{
u_char *bend = buf + size;
char *dp;
unsigned char pd, cr_l, cr, mt;
int i, cs = 0, cs_old = 0, cs_fest = 0;
if (size < 1)
return;
/* display header */
dp = sp->dlogspace;
dp += sprintf(dp, "%s\n", comment);
if ((0xfe & buf[0]) == PROTO_DIS_N0) { /* 1TR6 */
/* locate message type */
pd = *buf++;
cr_l = *buf++;
if (cr_l)
cr = *buf++;
else
cr = 0;
mt = *buf++;
if (pd == PROTO_DIS_N0) { /* N0 */
for (i = 0; i < mt_n0_len; i++)
if (mt_n0[i].nr == mt)
break;
/* display message type if it exists */
if (i == mt_n0_len)
dp += sprintf(dp, "callref %d %s size %d unknown message type N0 %x!\n",
cr & 0x7f, (cr & 0x80) ? "called" : "caller",
size, mt);
else
dp += sprintf(dp, "callref %d %s size %d message type %s\n",
cr & 0x7f, (cr & 0x80) ? "called" : "caller",
size, mt_n0[i].descr);
} else { /* N1 */
for (i = 0; i < mt_n1_len; i++)
if (mt_n1[i].nr == mt)
break;
/* display message type if it exists */
if (i == mt_n1_len)
dp += sprintf(dp, "callref %d %s size %d unknown message type N1 %x!\n",
cr & 0x7f, (cr & 0x80) ? "called" : "caller",
size, mt);
else
dp += sprintf(dp, "callref %d %s size %d message type %s\n",
cr & 0x7f, (cr & 0x80) ? "called" : "caller",
size, mt_n1[i].descr);
}
/* display each information element */
while (buf < bend) {
/* Is it a single octet information element? */
if (*buf & 0x80) {
switch ((*buf >> 4) & 7) {
case 1:
dp += sprintf(dp, " Shift %x\n", *buf & 0xf);
cs_old = cs;
cs = *buf & 7;
cs_fest = *buf & 8;
break;
case 3:
dp += sprintf(dp, " Congestion level %x\n", *buf & 0xf);
break;
case 2:
if (*buf == 0xa0) {
dp += sprintf(dp, " More data\n");
break;
}
if (*buf == 0xa1) {
dp += sprintf(dp, " Sending complete\n");
}
break;
/* fall through */
default:
dp += sprintf(dp, " Reserved %x\n", *buf);
break;
}
buf++;
continue;
}
/* No, locate it in the table */
if (cs == 0) {
for (i = 0; i < we_0_len; i++)
if (*buf == we_0[i].nr)
break;
/* When found, give appropriate msg */
if (i != we_0_len) {
dp += sprintf(dp, " %s\n", we_0[i].descr);
dp += we_0[i].f(dp, buf);
} else
dp += sprintf(dp, " Codeset %d attribute %x attribute size %d\n", cs, *buf, buf[1]);
} else if (cs == 6) {
for (i = 0; i < we_6_len; i++)
if (*buf == we_6[i].nr)
break;
/* When found, give appropriate msg */
if (i != we_6_len) {
dp += sprintf(dp, " %s\n", we_6[i].descr);
dp += we_6[i].f(dp, buf);
} else
dp += sprintf(dp, " Codeset %d attribute %x attribute size %d\n", cs, *buf, buf[1]);
} else
dp += sprintf(dp, " Unknown Codeset %d attribute %x attribute size %d\n", cs, *buf, buf[1]);
/* Skip to next element */
if (cs_fest == 8) {
cs = cs_old;
cs_old = 0;
cs_fest = 0;
}
buf += buf[1] + 2;
}
} else if (buf[0] == 8) { /* EURO */
/* locate message type */
buf++;
cr_l = *buf++;
if (cr_l)
cr = *buf++;
else
cr = 0;
mt = *buf++;
for (i = 0; i < MTSIZE; i++)
if (mtlist[i].nr == mt)
break;
/* display message type if it exists */
if (i == MTSIZE)
dp += sprintf(dp, "callref %d %s size %d unknown message type %x!\n",
cr & 0x7f, (cr & 0x80) ? "called" : "caller",
size, mt);
else
dp += sprintf(dp, "callref %d %s size %d message type %s\n",
cr & 0x7f, (cr & 0x80) ? "called" : "caller",
size, mtlist[i].descr);
/* display each information element */
while (buf < bend) {
/* Is it a single octet information element? */
if (*buf & 0x80) {
switch ((*buf >> 4) & 7) {
case 1:
dp += sprintf(dp, " Shift %x\n", *buf & 0xf);
break;
case 3:
dp += sprintf(dp, " Congestion level %x\n", *buf & 0xf);
break;
case 5:
dp += sprintf(dp, " Repeat indicator %x\n", *buf & 0xf);
break;
case 2:
if (*buf == 0xa0) {
dp += sprintf(dp, " More data\n");
break;
}
if (*buf == 0xa1) {
dp += sprintf(dp, " Sending complete\n");
}
break;
/* fall through */
default:
dp += sprintf(dp, " Reserved %x\n", *buf);
break;
}
buf++;
continue;
}
/* No, locate it in the table */
for (i = 0; i < IESIZE; i++)
if (*buf == ielist[i].nr)
break;
/* When not found, give appropriate msg */
if (i != IESIZE) {
dp += sprintf(dp, " %s\n", ielist[i].descr);
dp += ielist[i].f(dp, buf);
} else
dp += sprintf(dp, " attribute %x attribute size %d\n", *buf, buf[1]);
/* Skip to next element */
buf += buf[1] + 2;
}
} else {
dp += sprintf(dp, "Unknown protocol %x!", buf[0]);
}
dp += sprintf(dp, "\n");
HiSax_putstatus(sp, sp->dlogspace);
}
