patch-2.0.31 linux/drivers/isdn/hisax/q931.c

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diff -u --recursive --new-file v2.0.30/linux/drivers/isdn/hisax/q931.c linux/drivers/isdn/hisax/q931.c
@@ -0,0 +1,1218 @@
+/* $Id: q931.c,v 1.5 1997/04/06 22:56:43 keil 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
+ *
+ *
+ * $Log: q931.c,v $
+ * 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"
+
+u_char *
+findie(u_char * p, int size, u_char ie, int wanted_set)
+{
+	int l, codeset, maincodeset;
+	u_char *pend = p + size;
+
+	/* skip protocol discriminator, callref and message type */
+	p++;
+	l = (*p++) & 0xf;
+	p += l;
+	p++;
+	codeset = 0;
+	maincodeset = 0;
+	/* while there are bytes left... */
+	while (p < pend) {
+		if ((*p & 0xf0) == 0x90) {
+			codeset = *p & 0x07;
+			if (!(*p & 0x08))
+				maincodeset = codeset;
+		}
+		if (*p & 0x80)
+			p++;
+		else {
+			if (codeset == wanted_set) {
+				if (*p == ie)
+					return (p);
+				if (*p > ie)
+					return (NULL);
+			}
+			p++;
+			l = *p++;
+			p += l;
+			codeset = maincodeset;
+		}
+	}
+	return (NULL);
+}
+
+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';
+}
+
+int
+getcallref(u_char * p)
+{
+	p++;			/* prot discr */
+	p++;			/* callref length */
+	return (*p);		/* assuming one-byte callref */
+}
+
+/*
+ * 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);
+}

FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen, slshen@lbl.gov