Added layer1 hold feature. Requires new mISDN and mISDNuser package from git.
[lcr.git] / interface.c
index 9842e19..28ad88c 100644 (file)
@@ -9,9 +9,6 @@
 **                                                                           **
 \*****************************************************************************/ 
 
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
 #include "main.h"
 
 struct interface *interface_first = NULL; /* first interface is current list */
@@ -158,6 +155,7 @@ static int inter_ptp(struct interface *interface, char *filename, int line, char
        ifport->ptp = 1;
        return(0);
 }
+#if 0
 static int inter_ptmp(struct interface *interface, char *filename, int line, char *parameter, char *value)
 {
        struct interface_port *ifport;
@@ -186,6 +184,53 @@ static int inter_ptmp(struct interface *interface, char *filename, int line, cha
        ifport->ptmp = 1;
        return(0);
 }
+#endif
+static int inter_nt(struct interface *interface, char *filename, int line, char *parameter, char *value)
+{
+       struct interface_port *ifport;
+
+       /* port in chain ? */
+       if (!interface->ifport)
+       {
+               SPRINT(interface_error, "Error in %s (line %d): parameter '%s' expects previous 'port' definition.\n", filename, line, parameter);
+               return(-1);
+       }
+       /* goto end of chain */
+       ifport = interface->ifport;
+       while(ifport->next)
+               ifport = ifport->next;
+       /* add value */
+       if (value[0])
+       {
+               SPRINT(interface_error, "Error in %s (line %d): parameter '%s' expects no value.\n", filename, line, parameter);
+               return(-1);
+       }
+       ifport->nt = 1;
+       return(0);
+}
+static int inter_tespecial(struct interface *interface, char *filename, int line, char *parameter, char *value)
+{
+       struct interface_port *ifport;
+
+       /* port in chain ? */
+       if (!interface->ifport)
+       {
+               SPRINT(interface_error, "Error in %s (line %d): parameter '%s' expects previous 'port' definition.\n", filename, line, parameter);
+               return(-1);
+       }
+       /* goto end of chain */
+       ifport = interface->ifport;
+       while(ifport->next)
+               ifport = ifport->next;
+       /* add value */
+       if (value[0])
+       {
+               SPRINT(interface_error, "Error in %s (line %d): parameter '%s' expects no value.\n", filename, line, parameter);
+               return(-1);
+       }
+       ifport->tespecial = 1;
+       return(0);
+}
 static int inter_tones(struct interface *interface, char *filename, int line, char *parameter, char *value)
 {
        if (!strcasecmp(value, "yes"))
@@ -236,6 +281,11 @@ static int inter_hunt(struct interface *interface, char *filename, int line, cha
 }
 static int inter_port(struct interface *interface, char *filename, int line, char *parameter, char *value)
 {
+       SPRINT(interface_error, "Error in %s (line %d): parameter '%s' is outdated.\nPlease use 'portnum' and decrease port number by 1! Ports are counted from 0 now.\n", filename, line, parameter);
+       return(-1);
+}
+static int inter_portnum(struct interface *interface, char *filename, int line, char *parameter, char *value)
+{
        struct interface_port *ifport, **ifportp;
        struct interface *searchif;
        int val;
@@ -275,6 +325,97 @@ static int inter_port(struct interface *interface, char *filename, int line, cha
        *ifportp = ifport;
        return(0);
 }
+static int inter_portname(struct interface *interface, char *filename, int line, char *parameter, char *value)
+{
+       struct interface_port *ifport, **ifportp;
+       struct interface *searchif;
+
+       /* check for port already assigned */
+       searchif = interface_newlist;
+       while(searchif)
+       {
+               ifport = searchif->ifport;
+               while(ifport)
+               {
+                       if (!strcasecmp(ifport->portname, value))
+                       {
+                               SPRINT(interface_error, "Error in %s (line %d): port '%s' already used above.\n", filename, line, value);
+                               return(-1);
+                       }
+                       ifport = ifport->next;
+               }
+               searchif = searchif->next;
+       }
+       /* alloc port substructure */
+       ifport = (struct interface_port *)MALLOC(sizeof(struct interface_port));
+       memuse++;
+       ifport->interface = interface;
+       /* set value */
+       ifport->portnum = -1; // disable until resolved
+       SCPY(ifport->portname, value);
+       /* tail port */
+       ifportp = &interface->ifport;
+       while(*ifportp)
+               ifportp = &((*ifportp)->next);
+       *ifportp = ifport;
+       return(0);
+}
+static int inter_l1hold(struct interface *interface, char *filename, int line, char *parameter, char *value)
+{
+       struct interface_port *ifport;
+
+       /* port in chain ? */
+       if (!interface->ifport)
+       {
+               SPRINT(interface_error, "Error in %s (line %d): parameter '%s' expects previous 'port' definition.\n", filename, line, parameter);
+               return(-1);
+       }
+       /* goto end of chain */
+       ifport = interface->ifport;
+       while(ifport->next)
+               ifport = ifport->next;
+       if (!strcmp(value, "yes"))
+       {
+               ifport->l1hold = 1;
+       } else
+       if (!strcmp(value, "no"))
+       {
+               ifport->l1hold = 0;
+       } else
+       {
+               SPRINT(interface_error, "Error in %s (line %d): parameter '%s' expecting parameter 'yes' or 'no'.\n", filename, line, parameter);
+               return(-1);
+       }
+       return(0);
+}
+static int inter_l2hold(struct interface *interface, char *filename, int line, char *parameter, char *value)
+{
+       struct interface_port *ifport;
+
+       /* port in chain ? */
+       if (!interface->ifport)
+       {
+               SPRINT(interface_error, "Error in %s (line %d): parameter '%s' expects previous 'port' definition.\n", filename, line, parameter);
+               return(-1);
+       }
+       /* goto end of chain */
+       ifport = interface->ifport;
+       while(ifport->next)
+               ifport = ifport->next;
+       if (!strcmp(value, "yes"))
+       {
+               ifport->l2hold = 1;
+       } else
+       if (!strcmp(value, "no"))
+       {
+               ifport->l2hold = -1;
+       } else
+       {
+               SPRINT(interface_error, "Error in %s (line %d): parameter '%s' expecting parameter 'yes' or 'no'.\n", filename, line, parameter);
+               return(-1);
+       }
+       return(0);
+}
 static int inter_channel_out(struct interface *interface, char *filename, int line, char *parameter, char *value)
 {
        struct interface_port *ifport;
@@ -409,6 +550,55 @@ static int inter_channel_in(struct interface *interface, char *filename, int lin
        }
        return(0);
 }
+static int inter_timeouts(struct interface *interface, char *filename, int line, char *parameter, char *value)
+{
+       struct interface_port *ifport;
+//     struct select_channel *selchannel, **selchannelp;
+//     int val;
+       char *p, *el;
+
+       /* port in chain ? */
+       if (!interface->ifport)
+       {
+               SPRINT(interface_error, "Error in %s (line %d): parameter '%s' expects previous 'port' definition.\n", filename, line, parameter);
+               return(-1);
+       }
+       /* goto end of chain */
+       ifport = interface->ifport;
+       while(ifport->next)
+               ifport = ifport->next;
+       p = value;
+       if (!*p)
+       {
+               nofive:
+               SPRINT(interface_error, "Error in %s (line %d): parameter '%s' expects five timeout values.\n", filename, line, parameter);
+               return(-1);
+       }
+       el = p;
+       p = get_seperated(p);
+       ifport->tout_setup = atoi(el);
+       if (!*p)
+               goto nofive;
+       el = p;
+       p = get_seperated(p);
+       ifport->tout_dialing = atoi(el);
+       if (!*p)
+               goto nofive;
+       el = p;
+       p = get_seperated(p);
+       ifport->tout_proceeding = atoi(el);
+       if (!*p)
+               goto nofive;
+       el = p;
+       p = get_seperated(p);
+       ifport->tout_alerting = atoi(el);
+       if (!*p)
+               goto nofive;
+       el = p;
+       p = get_seperated(p);
+       ifport->tout_disconnect = atoi(el);
+       return(0);
+}
 static int inter_msn(struct interface *interface, char *filename, int line, char *parameter, char *value)
 {
        struct interface_msn *ifmsn, **ifmsnp;
@@ -454,9 +644,6 @@ static int inter_screen(struct interface_screen **ifscreenp, struct interface *i
                SPRINT(interface_error, "Error in %s (line %d): parameter '%s' expects old caller ID and new caller ID.\n", filename, line, parameter);
                return(-1);
        }
-       p = value;
-       el = p;
-       p = get_seperated(p);
        /* add screen entry to list*/
        ifscreen = (struct interface_screen *)MALLOC(sizeof(struct interface_screen));
        memuse++;
@@ -468,7 +655,9 @@ static int inter_screen(struct interface_screen **ifscreenp, struct interface *i
        while(*ifscreenp)
                ifscreenp = &((*ifscreenp)->next);
        *ifscreenp = ifscreen;
+//     printf("interface=%s\n", interface->name);
        /* get match */
+       p = value;
        while(*p)
        {
                el = p;
@@ -511,7 +700,7 @@ static int inter_screen(struct interface_screen **ifscreenp, struct interface *i
                        }
                        ifscreen->match_present = INFO_PRESENT_ALLOWED;
                } else
-               if (!strcasecmp(el, "restricted"))
+               if (!strcasecmp(el, "restrict") || !strcasecmp(el, "restricted"))
                {
                        if (ifscreen->match_present != -1)
                                goto presenterror;
@@ -564,13 +753,13 @@ static int inter_screen(struct interface_screen **ifscreenp, struct interface *i
                                goto typeerror;
                        ifscreen->result_type = INFO_NTYPE_INTERNATIONAL;
                } else
-               if (!strcasecmp(el, "allowed"))
+               if (!strcasecmp(el, "present") || !strcasecmp(el, "presented") || !strcasecmp(el, "allowed") || !strcasecmp(el, "allow"))
                {
                        if (ifscreen->result_present != -1)
                                goto presenterror;
                        ifscreen->result_present = INFO_PRESENT_ALLOWED;
                } else
-               if (!strcasecmp(el, "restricted"))
+               if (!strcasecmp(el, "restrict") || !strcasecmp(el, "restricted") || !strcasecmp(el, "deny") || !strcasecmp(el, "denied"))
                {
                        if (ifscreen->result_present != -1)
                                goto presenterror;
@@ -627,13 +816,133 @@ static int inter_nodtmf(struct interface *interface, char *filename, int line, c
        ifport->nodtmf = 1;
        return(0);
 }
-#warning filter to be done
-#if 0
 static int inter_filter(struct interface *interface, char *filename, int line, char *parameter, char *value)
 {
+       char *p, *q;
+
+       /* seperate parameter from filter */
+       p = value;
+       while(*p > 32)
+               p++;
+       if (*p)
+       {
+               *p++ = 0;
+               while(*p > 0 && *p <= 32)
+                       p++;
+       }
+
+       if (!strcasecmp(value, "gain"))
+       {
+               q = p;
+               while(*q > 32)
+                       q++;
+               if (*q)
+               {
+                       *q++ = 0;
+                       while(*q > 0 && *q <= 32)
+                               q++;
+               }
+               if (*p == 0 || *q == 0)
+               {
+                       SPRINT(interface_error, "Error in %s (line %d): parameter '%s %s' expects two gain values.\n", filename, line, parameter, value);
+                       return(-1);
+               }
+               if (atoi(p)<-8 || atoi(p)>8 || atoi(q)<-8 || atoi(q)>8)
+               {
+                       SPRINT(interface_error, "Error in %s (line %d): parameter '%s %s' gain values not in range. (-8...8)\n", filename, line, parameter, value);
+                       return(-1);
+               }
+               interface->tx_gain = atoi(p);
+               interface->rx_gain = atoi(q);
+       } else
+       if (!strcasecmp(value, "pipeline"))
+       {
+               if (*p == 0)
+               {
+                       SPRINT(interface_error, "Error in %s (line %d): parameter '%s %s' expects pipeline string.\n", filename, line, parameter, value);
+                       return(-1);
+               }
+               SCPY(interface->pipeline, p);
+       } else
+       if (!strcasecmp(value, "blowfish"))
+       {
+               unsigned char key[56];
+               int l;
+               
+               if (!!strncmp(p, "0x", 2))
+               {
+                       SPRINT(interface_error, "Error in %s (line %d): parameter '%s %s' expects blowfish key starting with '0x'.\n", filename, line, parameter, value);
+                       return(-1);
+               }
+               p += 2;
+               l = 0; 
+               while(*p)
+               {
+                       if (l == 56)
+                       {
+                               SPRINT(interface_error, "Error in %s (line %d): parameter '%s %s' key too long.\n", filename, line, parameter, value);
+                               return(-1);
+                       }
+                       if (*p >= '0' && *p <= '9')
+                               key[l] = (*p-'0')<<4;
+                       else if (*p >= 'a' && *p <= 'f')
+                               key[l] = (*p-'a'+10)<<4;
+                       else if (*p >= 'A' && *p <= 'F')
+                               key[l] = (*p-'A'+10)<<4;
+                       else
+                       {
+                               digout:
+                               SPRINT(interface_error, "Error in %s (line %d): parameter '%s %s' key has digits out of range. (0...9, a...f)\n", filename, line, parameter, value);
+                               return(-1);
+                       }
+                       p++;
+                       if (*p == 0)
+                       {
+                               SPRINT(interface_error, "Error in %s (line %d): parameter '%s %s' key must end on an 8 bit boundary (two character boundary).\n", filename, line, parameter, value);
+                               return(-1);
+                       }
+                       if (*p >= '0' && *p <= '9')
+                               key[l] = (*p-'0')<<4;
+                       else if (*p >= 'a' && *p <= 'f')
+                               key[l] = (*p-'a'+10)<<4;
+                       else if (*p >= 'A' && *p <= 'F')
+                               key[l] = (*p-'A'+10)<<4;
+                       else
+                               goto digout;
+                       p++;
+                       l++;
+               }
+               if (l < 4)
+               {
+                       SPRINT(interface_error, "Error in %s (line %d): parameter '%s %s' key must be at least 4 bytes (8 characters).\n", filename, line, parameter, value);
+                       return(-1);
+               }
+               memcpy(interface->bf_key, key, l);
+               interface->bf_len = l;
+       } else
+       {
+               SPRINT(interface_error, "Error in %s (line %d): parameter '%s' has unknown filter '%s'.\n", filename, line, parameter, value);
+               return(-1);
+       }
+       return(0);
+}
+static int inter_dialmax(struct interface *interface, char *filename, int line, char *parameter, char *value)
+{
+       struct interface_port *ifport;
+
+       /* port in chain ? */
+       if (!interface->ifport)
+       {
+               SPRINT(interface_error, "Error in %s (line %d): parameter '%s' expects previous 'port' definition.\n", filename, line, parameter);
+               return(-1);
+       }
+       /* goto end of chain */
+       ifport = interface->ifport;
+       while(ifport->next)
+               ifport = ifport->next;
+       ifport->dialmax = atoi(value);
        return(0);
 }
-#endif
 
 
 /*
@@ -652,7 +961,11 @@ struct interface_param interface_param[] = {
        "Select the algorithm for selecting port with free channel."},
 
        {"port", &inter_port, "<number>",
+       ""},
+       {"portnum", &inter_portnum, "<number>",
        "Give exactly one port for this interface.\nTo give multiple ports, add more lines with port parameters."},
+       {"portname", &inter_portname, "<name>",
+       "Same as 'portnum', but the name is given instead.\nUse 'isdninfo' to list all available ports and names."},
 
        {"block", &inter_block, "",
        "If keyword is given, calls on this interface are blocked.\n"
@@ -663,10 +976,35 @@ struct interface_param interface_param[] = {
        "This is required on NT-mode ports that are multipoint by default.\n"
        "This parameter must follow a 'port' parameter."},
 
+#if 0
        {"ptmp", &inter_ptmp, "",
        "The given port above is opened as point-to-multipoint.\n"
        "This is required on PRI NT-mode ports that are point-to-point by default.\n"
        "This parameter must follow a 'port' parameter."},
+#endif
+
+       {"nt", &inter_nt, "",
+       "The given port above is opened in NT-mode.\n"
+       "This is required on interfaces that support both NT-mode and TE-mode.\n"
+       "This parameter must follow a 'port' parameter."},
+
+       {"te-special", &inter_tespecial, "",
+       "The given port uses a modified TE-mode.\n"
+       "All information elements that are allowed Network->User will then be\n"
+       "transmitted User->Network also. This is usefull to pass all informations\n"
+       "between two interconnected LCRs, like 'redirected number' or 'display'.\n"
+       "Note that this is not compliant with ISDN protocol.\n"
+       "This parameter must follow a 'port' parameter."},
+
+       {"layer1hold", &inter_l1hold, "yes | no",
+       "The given port will not release layer 1 after layer 2 is down.\n"
+       "It is required to keep layer 1 of telephones up, to solve activation problems.\n"
+       "This parameter must follow a 'port' parameter."},
+
+       {"layer2hold", &inter_l2hold, "yes | no",
+       "The given port will continuously try to establish layer 2 link and hold it.\n"
+       "It is required for PTP links in most cases, therefore it is default.\n"
+       "This parameter must follow a 'port' parameter."},
 
        {"channel-out", &inter_channel_out, "[force,][<number>][,...][,free][,any][,no]",
        "Channel selection list for all outgoing calls to the interface.\n"
@@ -679,19 +1017,24 @@ struct interface_param interface_param[] = {
        " no - Signal 'no channel available' aka 'call waiting'. (see DSS1)"},
 
        {"channel-in", &inter_channel_in, "[<number>][,...][,free]",
-       "Channel selection list for all incomming calls from the interface.\n"
+       "Channel selection list for all incoming calls from the interface.\n"
        "A free channels is accepted if in the list.\n"
        "If any channel was requested, the first free channel found is selected.\n"
        "This parameter must follow a 'port' parameter.\n"
        " <number>[,...] - List of channels to accept.\n"
        " free - Accept any free channel"},
 
+       {"timeouts", &inter_timeouts, "<setup> <dialing> <proceeding> <alerting> <disconnect>",
+       "Timeout values for call states. They are both for incoming and outgoing states.\n"
+       "The default is 120 seconds for all states. Use 0 to disable.\n"
+       "This parameter must follow a 'port' parameter.\n"},
+
        {"msn", &inter_msn, "<default MSN>,[<additional MSN>[,...]]",
-       "Incomming caller ID is checked against given MSN numbers.\n"
+       "Incoming caller ID is checked against given MSN numbers.\n"
        "If the caller ID is not found in this list, it is overwritten by the first MSN"},
 
        {"screen-in", &inter_screen_in, "[options] <old caller ID>[%] [options] <new caller ID>[%]",
-       "Adds an entry for incomming calls to the caller ID screen list.\n"
+       "Adds an entry for incoming calls to the caller ID screen list.\n"
        "If the given 'old caller ID' matches, it is replaced by the 'new caller ID'\n"
        "If '%' is given after old caller ID, it matches even if caller ID has\n"
        "additional digits.\n"
@@ -709,13 +1052,14 @@ struct interface_param interface_param[] = {
        "Disables DTMF detection for this interface.\n"
        "This parameter must follow a 'port' parameter."},
 
-#if 0
-#warning todo: filter, also in the PmISDN object
-       {"filter", &inter_filter, "<filter> [parameters]",
+       {"filter", &inter_filter, "<filter> <parameters>",
        "Adds/appends a filter. Filters are ordered in transmit direction.\n"
        "gain <tx-volume> <rx-volume> - Changes volume (-8 .. 8)\n"
+       "pipeline <string> - Sets echo cancelation pipeline.\n"
        "blowfish <key> - Adds encryption. Key must be 4-56 bytes (8-112 hex characters."},
-#endif
+
+       {"dialmax", &inter_dialmax, "<digits>",
+       "Limits the number of digits in setup/information message."},
 
        {NULL, NULL, NULL, NULL}
 };
@@ -742,7 +1086,7 @@ struct interface *read_interfaces(void)
        if (interface_newlist != NULL)
                FATAL("list is not empty.\n");
        interface_error[0] = '\0';
-       SPRINT(filename, "%s/interface.conf", INSTALL_DATA);
+       SPRINT(filename, "%s/interface.conf", CONFIG_DATA);
 
        if (!(fp = fopen(filename,"r")))
        {
@@ -895,7 +1239,6 @@ void free_interfaces(struct interface *interface)
        struct select_channel *selchannel;
        struct interface_msn *ifmsn;
        struct interface_screen *ifscreen;
-       struct interface_filter *iffilter;
 
        while(interface)
        {
@@ -947,14 +1290,6 @@ void free_interfaces(struct interface *interface)
                        FREE(temp, sizeof(struct interface_screen));
                        memuse--;
                }
-               iffilter = interface->iffilter;
-               while(iffilter)
-               {
-                       temp = iffilter;
-                       iffilter = iffilter->next;
-                       FREE(temp, sizeof(struct interface_filter));
-                       memuse--;
-               }
                temp = interface;
                interface = interface->next;
                FREE(temp, sizeof(struct interface));
@@ -1019,8 +1354,11 @@ void relink_interfaces(void)
                        mISDNport = mISDNport_first;
                        while(mISDNport)
                        {
+                               if (!strcmp(mISDNport->name, ifport->portname))
+                                       ifport->portnum = mISDNport->portnum; /* same name, so we use same number */
                                if (mISDNport->portnum == ifport->portnum)
                                {
+                                       PDEBUG(DEBUG_ISDN, "Port %d:%s relinking!\n", mISDNport->portnum);
                                        ifport->mISDNport = mISDNport;
                                        mISDNport->ifport = ifport;
                                        set_defaults(ifport);
@@ -1074,12 +1412,16 @@ void load_port(struct interface_port *ifport)
        struct mISDNport *mISDNport;
 
        /* open new port */
-       mISDNport = mISDNport_open(ifport->portnum, ifport->ptp, ifport->ptmp, ifport->interface);
+       mISDNport = mISDNport_open(ifport->portnum, ifport->portname, ifport->ptp, ifport->nt, ifport->tespecial, ifport->l1hold, ifport->l2hold, ifport->interface);
        if (mISDNport)
        {
                /* link port */
                ifport->mISDNport = mISDNport;
                mISDNport->ifport = ifport;
+               /* set number and name */
+               ifport->portnum = mISDNport->portnum;
+               SCPY(ifport->portname, mISDNport->name);
+               /* set defaults */
                set_defaults(ifport);
        } else
        {
@@ -1101,16 +1443,173 @@ void doc_interface(void)
        ifparam = interface_param;
        while(ifparam->name)
        {
-               printf("%s %s\n", ifparam->name, ifparam->usage);
+               if (ifparam->name[0])
+                       printf("%s %s\n", ifparam->name, ifparam->usage);
                ifparam++;
        }
 
        ifparam = interface_param;
        while(ifparam->name)
        {
-               printf("\nParameter: %s %s\n", ifparam->name, ifparam->usage);
-               printf("%s\n", ifparam->help);
+               if (ifparam->name[0])
+               {
+                       printf("\nParameter: %s %s\n", ifparam->name, ifparam->usage);
+                       printf("%s\n", ifparam->help);
+               }
                ifparam++;
        }
 }
 
+
+/* screen caller id
+ * out==0: incoming caller id, out==1: outgoing caller id
+ */
+void do_screen(int out, char *id, int idsize, int *type, int *present, struct interface *interface)
+{
+       char                    *msn1;
+       struct interface_msn    *ifmsn;
+       struct interface_screen *ifscreen;
+       char suffix[64];
+
+       /* screen incoming caller id */
+       if (!out)
+       {
+               /* check for MSN numbers, use first MSN if no match */
+               msn1 = NULL;
+               ifmsn = interface->ifmsn;
+               while(ifmsn)
+               {
+                       if (!msn1)
+                               msn1 = ifmsn->msn;
+                       if (!strcmp(ifmsn->msn, id))
+                       {
+                               break;
+                       }
+                       ifmsn = ifmsn->next;
+               }
+               if (ifmsn)
+               {
+                       start_trace(-1, interface, numberrize_callerinfo(id, *type, options.national, options.international), NULL, DIRECTION_IN, 0, 0, "SCREEN (found in MSN list)");
+                       add_trace("msn", NULL, "%s", id);
+                       end_trace();
+               }
+               if (!ifmsn && msn1) // not in list, first msn given
+               {
+                       start_trace(-1, interface, numberrize_callerinfo(id, *type, options.national, options.international), NULL, DIRECTION_IN, 0, 0, "SCREEN (not found in MSN list)");
+                       add_trace("msn", "given", "%s", id);
+                       add_trace("msn", "used", "%s", msn1);
+                       end_trace();
+                       UNCPY(id, msn1, idsize);
+                       id[idsize-1] = '\0';
+               }
+       }
+
+       /* check screen list */
+       if (out)
+               ifscreen = interface->ifscreen_out;
+       else
+               ifscreen = interface->ifscreen_in;
+       while (ifscreen)
+       {
+               if (ifscreen->match_type==-1 || ifscreen->match_type==*type)
+               if (ifscreen->match_present==-1 || ifscreen->match_present==*present)
+               {
+                       if (strchr(ifscreen->match,'%'))
+                       {
+                               if (!strncmp(ifscreen->match, id, strchr(ifscreen->match,'%')-ifscreen->match))
+                                       break;
+                       } else
+                       {
+                               if (!strcmp(ifscreen->match, id))
+                                       break;
+                       }
+               }
+               ifscreen = ifscreen->next;
+       }
+       if (ifscreen) // match
+       {
+               start_trace(-1, interface, numberrize_callerinfo(id, *type, options.national, options.international), NULL, out?DIRECTION_OUT:DIRECTION_IN, 0, 0, "SCREEN (found in screen list)");
+               switch(*type)
+               {
+                       case INFO_NTYPE_UNKNOWN:
+                       add_trace("given", "type", "unknown");
+                       break;
+                       case INFO_NTYPE_SUBSCRIBER:
+                       add_trace("given", "type", "subscriber");
+                       break;
+                       case INFO_NTYPE_NATIONAL:
+                       add_trace("given", "type", "national");
+                       break;
+                       case INFO_NTYPE_INTERNATIONAL:
+                       add_trace("given", "type", "international");
+                       break;
+               }
+               switch(*present)
+               {
+                       case INFO_PRESENT_ALLOWED:
+                       add_trace("given", "present", "allowed");
+                       break;
+                       case INFO_PRESENT_RESTRICTED:
+                       add_trace("given", "present", "restricted");
+                       break;
+                       case INFO_PRESENT_NOTAVAIL:
+                       add_trace("given", "present", "not available");
+                       break;
+               }
+               add_trace("given", "id", "%s", id[0]?id:"<empty>");
+               if (ifscreen->result_type != -1)
+               {
+                       *type = ifscreen->result_type;
+                       switch(*type)
+                       {
+                               case INFO_NTYPE_UNKNOWN:
+                               add_trace("used", "type", "unknown");
+                               break;
+                               case INFO_NTYPE_SUBSCRIBER:
+                               add_trace("used", "type", "subscriber");
+                               break;
+                               case INFO_NTYPE_NATIONAL:
+                               add_trace("used", "type", "national");
+                               break;
+                               case INFO_NTYPE_INTERNATIONAL:
+                               add_trace("used", "type", "international");
+                               break;
+                       }
+               }
+               if (ifscreen->result_present != -1)
+               {
+                       *present = ifscreen->result_present;
+                       switch(*present)
+                       {
+                               case INFO_PRESENT_ALLOWED:
+                               add_trace("used", "present", "allowed");
+                               break;
+                               case INFO_PRESENT_RESTRICTED:
+                               add_trace("used", "present", "restricted");
+                               break;
+                               case INFO_PRESENT_NOTAVAIL:
+                               add_trace("used", "present", "not available");
+                               break;
+                       }
+               }
+               if (strchr(ifscreen->match,'%'))
+               {
+                       SCPY(suffix, strchr(ifscreen->match,'%') - ifscreen->match + id);
+                       UNCPY(id, ifscreen->result, idsize);
+                       id[idsize-1] = '\0';
+                       if (strchr(id,'%'))
+                       {
+                               *strchr(id,'%') = '\0';
+                               UNCAT(id, suffix, idsize);
+                               id[idsize-1] = '\0';
+                       }
+               } else
+               {
+                       UNCPY(id, ifscreen->result, idsize);
+                       id[idsize-1] = '\0';
+               }
+               add_trace("used", "id", "%s", id[0]?id:"<empty>");
+               end_trace();
+       }
+}
+