847 lines
23 KiB
C
847 lines
23 KiB
C
/* $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(struct timer_list *t)
|
|
{
|
|
unsigned long flags;
|
|
struct call_struc *cs = from_timer(cs, t, timer);
|
|
|
|
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 */
|
|
timer_setup(&cs->timer, deflect_timer_expire, 0);
|
|
cs->info[0] = '\0';
|
|
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 */
|
|
timer_setup(&cs->timer, deflect_timer_expire, 0);
|
|
cs->info[0] = '\0';
|
|
|
|
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 */
|
|
}
|
|
snprintf(cs->info, sizeof(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 */
|