--- /dev/null
+/* $Id: isdn_divert.c,v 1.6.6.3 2001/09/23 22:24:36 kai Exp $
+ *
+ * DSS1 main diversion supplementary handling for i4l.
+ *
+ * Copyright 1999 by Werner Cornelius (werner@isdn4linux.de)
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ */
+
+#include <linux/proc_fs.h>
+#include <linux/slab.h>
+#include <linux/timer.h>
+#include <linux/jiffies.h>
+
+#include "isdn_divert.h"
+
+/**********************************/
+/* structure keeping calling info */
+/**********************************/
+struct call_struc {
+ isdn_ctrl ics; /* delivered setup + driver parameters */
+ ulong divert_id; /* Id delivered to user */
+ unsigned char akt_state; /* actual state */
+ char deflect_dest[35]; /* deflection destination */
+ struct timer_list timer; /* timer control structure */
+ char info[90]; /* device info output */
+ struct call_struc *next; /* pointer to next entry */
+ struct call_struc *prev;
+};
+
+
+/********************************************/
+/* structure keeping deflection table entry */
+/********************************************/
+struct deflect_struc {
+ struct deflect_struc *next, *prev;
+ divert_rule rule; /* used rule */
+};
+
+
+/*****************************************/
+/* variables for main diversion services */
+/*****************************************/
+/* diversion/deflection processes */
+static struct call_struc *divert_head = NULL; /* head of remembered entrys */
+static ulong next_id = 1; /* next info id */
+static struct deflect_struc *table_head = NULL;
+static struct deflect_struc *table_tail = NULL;
+static unsigned char extern_wait_max = 4; /* maximum wait in s for external process */
+
+DEFINE_SPINLOCK(divert_lock);
+
+/***************************/
+/* timer callback function */
+/***************************/
+static void deflect_timer_expire(ulong arg)
+{
+ unsigned long flags;
+ struct call_struc *cs = (struct call_struc *) arg;
+
+ spin_lock_irqsave(&divert_lock, flags);
+ del_timer(&cs->timer); /* delete active timer */
+ spin_unlock_irqrestore(&divert_lock, flags);
+
+ switch (cs->akt_state) {
+ case DEFLECT_PROCEED:
+ cs->ics.command = ISDN_CMD_HANGUP; /* cancel action */
+ divert_if.ll_cmd(&cs->ics);
+ spin_lock_irqsave(&divert_lock, flags);
+ cs->akt_state = DEFLECT_AUTODEL; /* delete after timeout */
+ cs->timer.expires = jiffies + (HZ * AUTODEL_TIME);
+ add_timer(&cs->timer);
+ spin_unlock_irqrestore(&divert_lock, flags);
+ break;
+
+ case DEFLECT_ALERT:
+ cs->ics.command = ISDN_CMD_REDIR; /* protocol */
+ strlcpy(cs->ics.parm.setup.phone, cs->deflect_dest, sizeof(cs->ics.parm.setup.phone));
+ strcpy(cs->ics.parm.setup.eazmsn, "Testtext delayed");
+ divert_if.ll_cmd(&cs->ics);
+ spin_lock_irqsave(&divert_lock, flags);
+ cs->akt_state = DEFLECT_AUTODEL; /* delete after timeout */
+ cs->timer.expires = jiffies + (HZ * AUTODEL_TIME);
+ add_timer(&cs->timer);
+ spin_unlock_irqrestore(&divert_lock, flags);
+ break;
+
+ case DEFLECT_AUTODEL:
+ default:
+ spin_lock_irqsave(&divert_lock, flags);
+ if (cs->prev)
+ cs->prev->next = cs->next; /* forward link */
+ else
+ divert_head = cs->next;
+ if (cs->next)
+ cs->next->prev = cs->prev; /* back link */
+ spin_unlock_irqrestore(&divert_lock, flags);
+ kfree(cs);
+ return;
+
+ } /* switch */
+} /* deflect_timer_func */
+
+
+/*****************************************/
+/* handle call forwarding de/activations */
+/* 0 = deact, 1 = act, 2 = interrogate */
+/*****************************************/
+int cf_command(int drvid, int mode,
+ u_char proc, char *msn,
+ u_char service, char *fwd_nr, ulong *procid)
+{
+ unsigned long flags;
+ int retval, msnlen;
+ int fwd_len;
+ char *p, *ielenp, tmp[60];
+ struct call_struc *cs;
+
+ if (strchr(msn, '.')) return (-EINVAL); /* subaddress not allowed in msn */
+ if ((proc & 0x7F) > 2) return (-EINVAL);
+ proc &= 3;
+ p = tmp;
+ *p++ = 0x30; /* enumeration */
+ ielenp = p++; /* remember total length position */
+ *p++ = 0xa; /* proc tag */
+ *p++ = 1; /* length */
+ *p++ = proc & 0x7F; /* procedure to de/activate/interrogate */
+ *p++ = 0xa; /* service tag */
+ *p++ = 1; /* length */
+ *p++ = service; /* service to handle */
+
+ if (mode == 1) {
+ if (!*fwd_nr) return (-EINVAL); /* destination missing */
+ if (strchr(fwd_nr, '.')) return (-EINVAL); /* subaddress not allowed */
+ fwd_len = strlen(fwd_nr);
+ *p++ = 0x30; /* number enumeration */
+ *p++ = fwd_len + 2; /* complete forward to len */
+ *p++ = 0x80; /* fwd to nr */
+ *p++ = fwd_len; /* length of number */
+ strcpy(p, fwd_nr); /* copy number */
+ p += fwd_len; /* pointer beyond fwd */
+ } /* activate */
+
+ msnlen = strlen(msn);
+ *p++ = 0x80; /* msn number */
+ if (msnlen > 1) {
+ *p++ = msnlen; /* length */
+ strcpy(p, msn);
+ p += msnlen;
+ } else
+ *p++ = 0;
+
+ *ielenp = p - ielenp - 1; /* set total IE length */
+
+ /* allocate mem for information struct */
+ if (!(cs = kmalloc(sizeof(struct call_struc), GFP_ATOMIC)))
+ return (-ENOMEM); /* no memory */
+ init_timer(&cs->timer);
+ cs->info[0] = '\0';
+ cs->timer.function = deflect_timer_expire;
+ cs->timer.data = (ulong) cs; /* pointer to own structure */
+ cs->ics.driver = drvid;
+ cs->ics.command = ISDN_CMD_PROT_IO; /* protocol specific io */
+ cs->ics.arg = DSS1_CMD_INVOKE; /* invoke supplementary service */
+ cs->ics.parm.dss1_io.proc = (mode == 1) ? 7 : (mode == 2) ? 11 : 8; /* operation */
+ cs->ics.parm.dss1_io.timeout = 4000; /* from ETS 300 207-1 */
+ cs->ics.parm.dss1_io.datalen = p - tmp; /* total len */
+ cs->ics.parm.dss1_io.data = tmp; /* start of buffer */
+
+ spin_lock_irqsave(&divert_lock, flags);
+ cs->ics.parm.dss1_io.ll_id = next_id++; /* id for callback */
+ spin_unlock_irqrestore(&divert_lock, flags);
+ *procid = cs->ics.parm.dss1_io.ll_id;
+
+ sprintf(cs->info, "%d 0x%lx %s%s 0 %s %02x %d%s%s\n",
+ (!mode) ? DIVERT_DEACTIVATE : (mode == 1) ? DIVERT_ACTIVATE : DIVERT_REPORT,
+ cs->ics.parm.dss1_io.ll_id,
+ (mode != 2) ? "" : "0 ",
+ divert_if.drv_to_name(cs->ics.driver),
+ msn,
+ service & 0xFF,
+ proc,
+ (mode != 1) ? "" : " 0 ",
+ (mode != 1) ? "" : fwd_nr);
+
+ retval = divert_if.ll_cmd(&cs->ics); /* execute command */
+
+ if (!retval) {
+ cs->prev = NULL;
+ spin_lock_irqsave(&divert_lock, flags);
+ cs->next = divert_head;
+ divert_head = cs;
+ spin_unlock_irqrestore(&divert_lock, flags);
+ } else
+ kfree(cs);
+ return (retval);
+} /* cf_command */
+
+
+/****************************************/
+/* handle a external deflection command */
+/****************************************/
+int deflect_extern_action(u_char cmd, ulong callid, char *to_nr)
+{
+ struct call_struc *cs;
+ isdn_ctrl ic;
+ unsigned long flags;
+ int i;
+
+ if ((cmd & 0x7F) > 2) return (-EINVAL); /* invalid command */
+ cs = divert_head; /* start of parameter list */
+ while (cs) {
+ if (cs->divert_id == callid) break; /* found */
+ cs = cs->next;
+ } /* search entry */
+ if (!cs) return (-EINVAL); /* invalid callid */
+
+ ic.driver = cs->ics.driver;
+ ic.arg = cs->ics.arg;
+ i = -EINVAL;
+ if (cs->akt_state == DEFLECT_AUTODEL) return (i); /* no valid call */
+ switch (cmd & 0x7F) {
+ case 0: /* hangup */
+ del_timer(&cs->timer);
+ ic.command = ISDN_CMD_HANGUP;
+ i = divert_if.ll_cmd(&ic);
+ spin_lock_irqsave(&divert_lock, flags);
+ cs->akt_state = DEFLECT_AUTODEL; /* delete after timeout */
+ cs->timer.expires = jiffies + (HZ * AUTODEL_TIME);
+ add_timer(&cs->timer);
+ spin_unlock_irqrestore(&divert_lock, flags);
+ break;
+
+ case 1: /* alert */
+ if (cs->akt_state == DEFLECT_ALERT) return (0);
+ cmd &= 0x7F; /* never wait */
+ del_timer(&cs->timer);
+ ic.command = ISDN_CMD_ALERT;
+ if ((i = divert_if.ll_cmd(&ic))) {
+ spin_lock_irqsave(&divert_lock, flags);
+ cs->akt_state = DEFLECT_AUTODEL; /* delete after timeout */
+ cs->timer.expires = jiffies + (HZ * AUTODEL_TIME);
+ add_timer(&cs->timer);
+ spin_unlock_irqrestore(&divert_lock, flags);
+ } else
+ cs->akt_state = DEFLECT_ALERT;
+ break;
+
+ case 2: /* redir */
+ del_timer(&cs->timer);
+ strlcpy(cs->ics.parm.setup.phone, to_nr, sizeof(cs->ics.parm.setup.phone));
+ strcpy(cs->ics.parm.setup.eazmsn, "Testtext manual");
+ ic.command = ISDN_CMD_REDIR;
+ if ((i = divert_if.ll_cmd(&ic))) {
+ spin_lock_irqsave(&divert_lock, flags);
+ cs->akt_state = DEFLECT_AUTODEL; /* delete after timeout */
+ cs->timer.expires = jiffies + (HZ * AUTODEL_TIME);
+ add_timer(&cs->timer);
+ spin_unlock_irqrestore(&divert_lock, flags);
+ } else
+ cs->akt_state = DEFLECT_ALERT;
+ break;
+
+ } /* switch */
+ return (i);
+} /* deflect_extern_action */
+
+/********************************/
+/* insert a new rule before idx */
+/********************************/
+int insertrule(int idx, divert_rule *newrule)
+{
+ struct deflect_struc *ds, *ds1 = NULL;
+ unsigned long flags;
+
+ if (!(ds = kmalloc(sizeof(struct deflect_struc), GFP_KERNEL)))
+ return (-ENOMEM); /* no memory */
+
+ ds->rule = *newrule; /* set rule */
+
+ spin_lock_irqsave(&divert_lock, flags);
+
+ if (idx >= 0) {
+ ds1 = table_head;
+ while ((ds1) && (idx > 0))
+ { idx--;
+ ds1 = ds1->next;
+ }
+ if (!ds1) idx = -1;
+ }
+
+ if (idx < 0) {
+ ds->prev = table_tail; /* previous entry */
+ ds->next = NULL; /* end of chain */
+ if (ds->prev)
+ ds->prev->next = ds; /* last forward */
+ else
+ table_head = ds; /* is first entry */
+ table_tail = ds; /* end of queue */
+ } else {
+ ds->next = ds1; /* next entry */
+ ds->prev = ds1->prev; /* prev entry */
+ ds1->prev = ds; /* backward chain old element */
+ if (!ds->prev)
+ table_head = ds; /* first element */
+ }
+
+ spin_unlock_irqrestore(&divert_lock, flags);
+ return (0);
+} /* insertrule */
+
+/***********************************/
+/* delete the rule at position idx */
+/***********************************/
+int deleterule(int idx)
+{
+ struct deflect_struc *ds, *ds1;
+ unsigned long flags;
+
+ if (idx < 0) {
+ spin_lock_irqsave(&divert_lock, flags);
+ ds = table_head;
+ table_head = NULL;
+ table_tail = NULL;
+ spin_unlock_irqrestore(&divert_lock, flags);
+ while (ds) {
+ ds1 = ds;
+ ds = ds->next;
+ kfree(ds1);
+ }
+ return (0);
+ }
+
+ spin_lock_irqsave(&divert_lock, flags);
+ ds = table_head;
+
+ while ((ds) && (idx > 0)) {
+ idx--;
+ ds = ds->next;
+ }
+
+ if (!ds) {
+ spin_unlock_irqrestore(&divert_lock, flags);
+ return (-EINVAL);
+ }
+
+ if (ds->next)
+ ds->next->prev = ds->prev; /* backward chain */
+ else
+ table_tail = ds->prev; /* end of chain */
+
+ if (ds->prev)
+ ds->prev->next = ds->next; /* forward chain */
+ else
+ table_head = ds->next; /* start of chain */
+
+ spin_unlock_irqrestore(&divert_lock, flags);
+ kfree(ds);
+ return (0);
+} /* deleterule */
+
+/*******************************************/
+/* get a pointer to a specific rule number */
+/*******************************************/
+divert_rule *getruleptr(int idx)
+{
+ struct deflect_struc *ds = table_head;
+
+ if (idx < 0) return (NULL);
+ while ((ds) && (idx >= 0)) {
+ if (!(idx--)) {
+ return (&ds->rule);
+ break;
+ }
+ ds = ds->next;
+ }
+ return (NULL);
+} /* getruleptr */
+
+/*************************************************/
+/* called from common module on an incoming call */
+/*************************************************/
+static int isdn_divert_icall(isdn_ctrl *ic)
+{
+ int retval = 0;
+ unsigned long flags;
+ struct call_struc *cs = NULL;
+ struct deflect_struc *dv;
+ char *p, *p1;
+ u_char accept;
+
+ /* first check the internal deflection table */
+ for (dv = table_head; dv; dv = dv->next) {
+ /* scan table */
+ if (((dv->rule.callopt == 1) && (ic->command == ISDN_STAT_ICALLW)) ||
+ ((dv->rule.callopt == 2) && (ic->command == ISDN_STAT_ICALL)))
+ continue; /* call option check */
+ if (!(dv->rule.drvid & (1L << ic->driver)))
+ continue; /* driver not matching */
+ if ((dv->rule.si1) && (dv->rule.si1 != ic->parm.setup.si1))
+ continue; /* si1 not matching */
+ if ((dv->rule.si2) && (dv->rule.si2 != ic->parm.setup.si2))
+ continue; /* si2 not matching */
+
+ p = dv->rule.my_msn;
+ p1 = ic->parm.setup.eazmsn;
+ accept = 0;
+ while (*p) {
+ /* complete compare */
+ if (*p == '-') {
+ accept = 1; /* call accepted */
+ break;
+ }
+ if (*p++ != *p1++)
+ break; /* not accepted */
+ if ((!*p) && (!*p1))
+ accept = 1;
+ } /* complete compare */
+ if (!accept) continue; /* not accepted */
+
+ if ((strcmp(dv->rule.caller, "0")) ||
+ (ic->parm.setup.phone[0])) {
+ p = dv->rule.caller;
+ p1 = ic->parm.setup.phone;
+ accept = 0;
+ while (*p) {
+ /* complete compare */
+ if (*p == '-') {
+ accept = 1; /* call accepted */
+ break;
+ }
+ if (*p++ != *p1++)
+ break; /* not accepted */
+ if ((!*p) && (!*p1))
+ accept = 1;
+ } /* complete compare */
+ if (!accept) continue; /* not accepted */
+ }
+
+ switch (dv->rule.action) {
+ case DEFLECT_IGNORE:
+ return 0;
+
+ case DEFLECT_ALERT:
+ case DEFLECT_PROCEED:
+ case DEFLECT_REPORT:
+ case DEFLECT_REJECT:
+ if (dv->rule.action == DEFLECT_PROCEED)
+ if ((!if_used) || ((!extern_wait_max) && (!dv->rule.waittime)))
+ return (0); /* no external deflection needed */
+ if (!(cs = kmalloc(sizeof(struct call_struc), GFP_ATOMIC)))
+ return (0); /* no memory */
+ init_timer(&cs->timer);
+ cs->info[0] = '\0';
+ cs->timer.function = deflect_timer_expire;
+ cs->timer.data = (ulong) cs; /* pointer to own structure */
+
+ cs->ics = *ic; /* copy incoming data */
+ if (!cs->ics.parm.setup.phone[0]) strcpy(cs->ics.parm.setup.phone, "0");
+ if (!cs->ics.parm.setup.eazmsn[0]) strcpy(cs->ics.parm.setup.eazmsn, "0");
+ cs->ics.parm.setup.screen = dv->rule.screen;
+ if (dv->rule.waittime)
+ cs->timer.expires = jiffies + (HZ * dv->rule.waittime);
+ else if (dv->rule.action == DEFLECT_PROCEED)
+ cs->timer.expires = jiffies + (HZ * extern_wait_max);
+ else
+ cs->timer.expires = 0;
+ cs->akt_state = dv->rule.action;
+ spin_lock_irqsave(&divert_lock, flags);
+ cs->divert_id = next_id++; /* new sequence number */
+ spin_unlock_irqrestore(&divert_lock, flags);
+ cs->prev = NULL;
+ if (cs->akt_state == DEFLECT_ALERT) {
+ strcpy(cs->deflect_dest, dv->rule.to_nr);
+ if (!cs->timer.expires) {
+ strcpy(ic->parm.setup.eazmsn,
+ "Testtext direct");
+ ic->parm.setup.screen = dv->rule.screen;
+ strlcpy(ic->parm.setup.phone, dv->rule.to_nr, sizeof(ic->parm.setup.phone));
+ cs->akt_state = DEFLECT_AUTODEL; /* delete after timeout */
+ cs->timer.expires = jiffies + (HZ * AUTODEL_TIME);
+ retval = 5;
+ } else
+ retval = 1; /* alerting */
+ } else {
+ cs->deflect_dest[0] = '\0';
+ retval = 4; /* only proceed */
+ }
+ sprintf(cs->info, "%d 0x%lx %s %s %s %s 0x%x 0x%x %d %d %s\n",
+ cs->akt_state,
+ cs->divert_id,
+ divert_if.drv_to_name(cs->ics.driver),
+ (ic->command == ISDN_STAT_ICALLW) ? "1" : "0",
+ cs->ics.parm.setup.phone,
+ cs->ics.parm.setup.eazmsn,
+ cs->ics.parm.setup.si1,
+ cs->ics.parm.setup.si2,
+ cs->ics.parm.setup.screen,
+ dv->rule.waittime,
+ cs->deflect_dest);
+ if ((dv->rule.action == DEFLECT_REPORT) ||
+ (dv->rule.action == DEFLECT_REJECT)) {
+ put_info_buffer(cs->info);
+ kfree(cs); /* remove */
+ return ((dv->rule.action == DEFLECT_REPORT) ? 0 : 2); /* nothing to do */
+ }
+ break;
+
+ default:
+ return 0; /* ignore call */
+ } /* switch action */
+ break; /* will break the 'for' looping */
+ } /* scan_table */
+
+ if (cs) {
+ cs->prev = NULL;
+ spin_lock_irqsave(&divert_lock, flags);
+ cs->next = divert_head;
+ divert_head = cs;
+ if (cs->timer.expires) add_timer(&cs->timer);
+ spin_unlock_irqrestore(&divert_lock, flags);
+
+ put_info_buffer(cs->info);
+ return (retval);
+ } else
+ return (0);
+} /* isdn_divert_icall */
+
+
+void deleteprocs(void)
+{
+ struct call_struc *cs, *cs1;
+ unsigned long flags;
+
+ spin_lock_irqsave(&divert_lock, flags);
+ cs = divert_head;
+ divert_head = NULL;
+ while (cs) {
+ del_timer(&cs->timer);
+ cs1 = cs;
+ cs = cs->next;
+ kfree(cs1);
+ }
+ spin_unlock_irqrestore(&divert_lock, flags);
+} /* deleteprocs */
+
+/****************************************************/
+/* put a address including address type into buffer */
+/****************************************************/
+static int put_address(char *st, u_char *p, int len)
+{
+ u_char retval = 0;
+ u_char adr_typ = 0; /* network standard */
+
+ if (len < 2) return (retval);
+ if (*p == 0xA1) {
+ retval = *(++p) + 2; /* total length */
+ if (retval > len) return (0); /* too short */
+ len = retval - 2; /* remaining length */
+ if (len < 3) return (0);
+ if ((*(++p) != 0x0A) || (*(++p) != 1)) return (0);
+ adr_typ = *(++p);
+ len -= 3;
+ p++;
+ if (len < 2) return (0);
+ if (*p++ != 0x12) return (0);
+ if (*p > len) return (0); /* check number length */
+ len = *p++;
+ } else if (*p == 0x80) {
+ retval = *(++p) + 2; /* total length */
+ if (retval > len) return (0);
+ len = retval - 2;
+ p++;
+ } else
+ return (0); /* invalid address information */
+
+ sprintf(st, "%d ", adr_typ);
+ st += strlen(st);
+ if (!len)
+ *st++ = '-';
+ else
+ while (len--)
+ *st++ = *p++;
+ *st = '\0';
+ return (retval);
+} /* put_address */
+
+/*************************************/
+/* report a successful interrogation */
+/*************************************/
+static int interrogate_success(isdn_ctrl *ic, struct call_struc *cs)
+{
+ char *src = ic->parm.dss1_io.data;
+ int restlen = ic->parm.dss1_io.datalen;
+ int cnt = 1;
+ u_char n, n1;
+ char st[90], *p, *stp;
+
+ if (restlen < 2) return (-100); /* frame too short */
+ if (*src++ != 0x30) return (-101);
+ if ((n = *src++) > 0x81) return (-102); /* invalid length field */
+ restlen -= 2; /* remaining bytes */
+ if (n == 0x80) {
+ if (restlen < 2) return (-103);
+ if ((*(src + restlen - 1)) || (*(src + restlen - 2))) return (-104);
+ restlen -= 2;
+ } else if (n == 0x81) {
+ n = *src++;
+ restlen--;
+ if (n > restlen) return (-105);
+ restlen = n;
+ } else if (n > restlen)
+ return (-106);
+ else
+ restlen = n; /* standard format */
+ if (restlen < 3) return (-107); /* no procedure */
+ if ((*src++ != 2) || (*src++ != 1) || (*src++ != 0x0B)) return (-108);
+ restlen -= 3;
+ if (restlen < 2) return (-109); /* list missing */
+ if (*src == 0x31) {
+ src++;
+ if ((n = *src++) > 0x81) return (-110); /* invalid length field */
+ restlen -= 2; /* remaining bytes */
+ if (n == 0x80) {
+ if (restlen < 2) return (-111);
+ if ((*(src + restlen - 1)) || (*(src + restlen - 2))) return (-112);
+ restlen -= 2;
+ } else if (n == 0x81) {
+ n = *src++;
+ restlen--;
+ if (n > restlen) return (-113);
+ restlen = n;
+ } else if (n > restlen)
+ return (-114);
+ else
+ restlen = n; /* standard format */
+ } /* result list header */
+
+ while (restlen >= 2) {
+ stp = st;
+ sprintf(stp, "%d 0x%lx %d %s ", DIVERT_REPORT, ic->parm.dss1_io.ll_id,
+ cnt++, divert_if.drv_to_name(ic->driver));
+ stp += strlen(stp);
+ if (*src++ != 0x30) return (-115); /* invalid enum */
+ n = *src++;
+ restlen -= 2;
+ if (n > restlen) return (-116); /* enum length wrong */
+ restlen -= n;
+ p = src; /* one entry */
+ src += n;
+ if (!(n1 = put_address(stp, p, n & 0xFF))) continue;
+ stp += strlen(stp);
+ p += n1;
+ n -= n1;
+ if (n < 6) continue; /* no service and proc */
+ if ((*p++ != 0x0A) || (*p++ != 1)) continue;
+ sprintf(stp, " 0x%02x ", (*p++) & 0xFF);
+ stp += strlen(stp);
+ if ((*p++ != 0x0A) || (*p++ != 1)) continue;
+ sprintf(stp, "%d ", (*p++) & 0xFF);
+ stp += strlen(stp);
+ n -= 6;
+ if (n > 2) {
+ if (*p++ != 0x30) continue;
+ if (*p > (n - 2)) continue;
+ n = *p++;
+ if (!(n1 = put_address(stp, p, n & 0xFF))) continue;
+ stp += strlen(stp);
+ }
+ sprintf(stp, "\n");
+ put_info_buffer(st);
+ } /* while restlen */
+ if (restlen) return (-117);
+ return (0);
+} /* interrogate_success */
+
+/*********************************************/
+/* callback for protocol specific extensions */
+/*********************************************/
+static int prot_stat_callback(isdn_ctrl *ic)
+{
+ struct call_struc *cs, *cs1;
+ int i;
+ unsigned long flags;
+
+ cs = divert_head; /* start of list */
+ cs1 = NULL;
+ while (cs) {
+ if (ic->driver == cs->ics.driver) {
+ switch (cs->ics.arg) {
+ case DSS1_CMD_INVOKE:
+ if ((cs->ics.parm.dss1_io.ll_id == ic->parm.dss1_io.ll_id) &&
+ (cs->ics.parm.dss1_io.hl_id == ic->parm.dss1_io.hl_id)) {
+ switch (ic->arg) {
+ case DSS1_STAT_INVOKE_ERR:
+ sprintf(cs->info, "128 0x%lx 0x%x\n",
+ ic->parm.dss1_io.ll_id,
+ ic->parm.dss1_io.timeout);
+ put_info_buffer(cs->info);
+ break;
+
+ case DSS1_STAT_INVOKE_RES:
+ switch (cs->ics.parm.dss1_io.proc) {
+ case 7:
+ case 8:
+ put_info_buffer(cs->info);
+ break;
+
+ case 11:
+ i = interrogate_success(ic, cs);
+ if (i)
+ sprintf(cs->info, "%d 0x%lx %d\n", DIVERT_REPORT,
+ ic->parm.dss1_io.ll_id, i);
+ put_info_buffer(cs->info);
+ break;
+
+ default:
+ printk(KERN_WARNING "dss1_divert: unknown proc %d\n", cs->ics.parm.dss1_io.proc);
+ break;
+ }
+
+ break;
+
+ default:
+ printk(KERN_WARNING "dss1_divert unknown invoke answer %lx\n", ic->arg);
+ break;
+ }
+ cs1 = cs; /* remember structure */
+ cs = NULL;
+ continue; /* abort search */
+ } /* id found */
+ break;
+
+ case DSS1_CMD_INVOKE_ABORT:
+ printk(KERN_WARNING "dss1_divert unhandled invoke abort\n");
+ break;
+
+ default:
+ printk(KERN_WARNING "dss1_divert unknown cmd 0x%lx\n", cs->ics.arg);
+ break;
+ } /* switch ics.arg */
+ cs = cs->next;
+ } /* driver ok */
+ }
+
+ if (!cs1) {
+ printk(KERN_WARNING "dss1_divert unhandled process\n");
+ return (0);
+ }
+
+ if (cs1->ics.driver == -1) {
+ spin_lock_irqsave(&divert_lock, flags);
+ del_timer(&cs1->timer);
+ if (cs1->prev)
+ cs1->prev->next = cs1->next; /* forward link */
+ else
+ divert_head = cs1->next;
+ if (cs1->next)
+ cs1->next->prev = cs1->prev; /* back link */
+ spin_unlock_irqrestore(&divert_lock, flags);
+ kfree(cs1);
+ }
+
+ return (0);
+} /* prot_stat_callback */
+
+
+/***************************/
+/* status callback from HL */
+/***************************/
+static int isdn_divert_stat_callback(isdn_ctrl *ic)
+{
+ struct call_struc *cs, *cs1;
+ unsigned long flags;
+ int retval;
+
+ retval = -1;
+ cs = divert_head; /* start of list */
+ while (cs) {
+ if ((ic->driver == cs->ics.driver) &&
+ (ic->arg == cs->ics.arg)) {
+ switch (ic->command) {
+ case ISDN_STAT_DHUP:
+ sprintf(cs->info, "129 0x%lx\n", cs->divert_id);
+ del_timer(&cs->timer);
+ cs->ics.driver = -1;
+ break;
+
+ case ISDN_STAT_CAUSE:
+ sprintf(cs->info, "130 0x%lx %s\n", cs->divert_id, ic->parm.num);
+ break;
+
+ case ISDN_STAT_REDIR:
+ sprintf(cs->info, "131 0x%lx\n", cs->divert_id);
+ del_timer(&cs->timer);
+ cs->ics.driver = -1;
+ break;
+
+ default:
+ sprintf(cs->info, "999 0x%lx 0x%x\n", cs->divert_id, (int)(ic->command));
+ break;
+ }
+ put_info_buffer(cs->info);
+ retval = 0;
+ }
+ cs1 = cs;
+ cs = cs->next;
+ if (cs1->ics.driver == -1) {
+ spin_lock_irqsave(&divert_lock, flags);
+ if (cs1->prev)
+ cs1->prev->next = cs1->next; /* forward link */
+ else
+ divert_head = cs1->next;
+ if (cs1->next)
+ cs1->next->prev = cs1->prev; /* back link */
+ spin_unlock_irqrestore(&divert_lock, flags);
+ kfree(cs1);
+ }
+ }
+ return (retval); /* not found */
+} /* isdn_divert_stat_callback */
+
+
+/********************/
+/* callback from ll */
+/********************/
+int ll_callback(isdn_ctrl *ic)
+{
+ switch (ic->command) {
+ case ISDN_STAT_ICALL:
+ case ISDN_STAT_ICALLW:
+ return (isdn_divert_icall(ic));
+ break;
+
+ case ISDN_STAT_PROT:
+ if ((ic->arg & 0xFF) == ISDN_PTYPE_EURO) {
+ if (ic->arg != DSS1_STAT_INVOKE_BRD)
+ return (prot_stat_callback(ic));
+ else
+ return (0); /* DSS1 invoke broadcast */
+ } else
+ return (-1); /* protocol not euro */
+
+ default:
+ return (isdn_divert_stat_callback(ic));
+ }
+} /* ll_callback */
Code Review / kvmfornfv.git / blobdiff