7551d83c35
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. No functional change intended.
805 lines
20 KiB
C
805 lines
20 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
|
|
*
|
|
* Copyright (c) 1998 Brian Somers <brian@Awfulhak.org>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#include <sys/param.h>
|
|
#include <netinet/in.h>
|
|
#include <netinet/in_systm.h>
|
|
#include <netinet/ip.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/un.h>
|
|
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <paths.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <sys/wait.h>
|
|
#include <termios.h>
|
|
#include <unistd.h>
|
|
|
|
#include "layer.h"
|
|
#include "mbuf.h"
|
|
#include "log.h"
|
|
#include "defs.h"
|
|
#include "timer.h"
|
|
#include "lqr.h"
|
|
#include "hdlc.h"
|
|
#include "throughput.h"
|
|
#include "fsm.h"
|
|
#include "lcp.h"
|
|
#include "ccp.h"
|
|
#include "link.h"
|
|
#include "async.h"
|
|
#include "descriptor.h"
|
|
#include "physical.h"
|
|
#include "chat.h"
|
|
#include "mp.h"
|
|
#include "auth.h"
|
|
#include "chap.h"
|
|
#include "slcompress.h"
|
|
#include "iplist.h"
|
|
#include "ncpaddr.h"
|
|
#include "ipcp.h"
|
|
#include "filter.h"
|
|
#include "cbcp.h"
|
|
#include "command.h"
|
|
#include "datalink.h"
|
|
#ifndef NORADIUS
|
|
#include "radius.h"
|
|
#endif
|
|
#include "ipv6cp.h"
|
|
#include "ncp.h"
|
|
#include "bundle.h"
|
|
#include "id.h"
|
|
|
|
#define BUFLEFT(c) (sizeof (c)->buf - ((c)->bufend - (c)->buf))
|
|
|
|
static void ExecStr(struct physical *, char *, char *, int);
|
|
static char *ExpandString(struct chat *, const char *, char *, int, int);
|
|
|
|
static void
|
|
chat_PauseTimer(void *v)
|
|
{
|
|
struct chat *c = (struct chat *)v;
|
|
timer_Stop(&c->pause);
|
|
c->pause.load = 0;
|
|
}
|
|
|
|
static void
|
|
chat_Pause(struct chat *c, u_long load)
|
|
{
|
|
timer_Stop(&c->pause);
|
|
c->pause.load += load;
|
|
c->pause.func = chat_PauseTimer;
|
|
c->pause.name = "chat pause";
|
|
c->pause.arg = c;
|
|
timer_Start(&c->pause);
|
|
}
|
|
|
|
static void
|
|
chat_TimeoutTimer(void *v)
|
|
{
|
|
struct chat *c = (struct chat *)v;
|
|
timer_Stop(&c->timeout);
|
|
c->TimedOut = 1;
|
|
}
|
|
|
|
static void
|
|
chat_SetTimeout(struct chat *c)
|
|
{
|
|
timer_Stop(&c->timeout);
|
|
if (c->TimeoutSec > 0) {
|
|
c->timeout.load = SECTICKS * c->TimeoutSec;
|
|
c->timeout.func = chat_TimeoutTimer;
|
|
c->timeout.name = "chat timeout";
|
|
c->timeout.arg = c;
|
|
timer_Start(&c->timeout);
|
|
}
|
|
}
|
|
|
|
static char *
|
|
chat_NextChar(char *ptr, char ch)
|
|
{
|
|
for (; *ptr; ptr++)
|
|
if (*ptr == ch)
|
|
return ptr;
|
|
else if (*ptr == '\\')
|
|
if (*++ptr == '\0')
|
|
return NULL;
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static int
|
|
chat_UpdateSet(struct fdescriptor *d, fd_set *r, fd_set *w, fd_set *e, int *n)
|
|
{
|
|
struct chat *c = descriptor2chat(d);
|
|
int special, gotabort, gottimeout, needcr;
|
|
int TimedOut = c->TimedOut;
|
|
static char arg_term; /* An empty string */
|
|
|
|
if (c->pause.state == TIMER_RUNNING)
|
|
return 0;
|
|
|
|
if (TimedOut) {
|
|
log_Printf(LogCHAT, "Expect timeout\n");
|
|
if (c->nargptr == NULL)
|
|
c->state = CHAT_FAILED;
|
|
else {
|
|
/* c->state = CHAT_EXPECT; */
|
|
c->argptr = &arg_term;
|
|
/*
|
|
We have to clear the input buffer, because it contains output
|
|
from the previous (timed out) command.
|
|
*/
|
|
c->bufstart = c->bufend;
|
|
}
|
|
c->TimedOut = 0;
|
|
}
|
|
|
|
if (c->state != CHAT_EXPECT && c->state != CHAT_SEND)
|
|
return 0;
|
|
|
|
gottimeout = gotabort = 0;
|
|
|
|
if (c->arg < c->argc && (c->arg < 0 || *c->argptr == '\0')) {
|
|
/* Go get the next string */
|
|
if (c->arg < 0 || c->state == CHAT_SEND)
|
|
c->state = CHAT_EXPECT;
|
|
else
|
|
c->state = CHAT_SEND;
|
|
|
|
special = 1;
|
|
while (special && (c->nargptr || c->arg < c->argc - 1)) {
|
|
if (c->arg < 0 || (!TimedOut && c->state == CHAT_SEND))
|
|
c->nargptr = NULL;
|
|
|
|
if (c->nargptr != NULL) {
|
|
/* We're doing expect-send-expect.... */
|
|
c->argptr = c->nargptr;
|
|
/* Put the '-' back in case we ever want to rerun our script */
|
|
c->nargptr[-1] = '-';
|
|
c->nargptr = chat_NextChar(c->nargptr, '-');
|
|
if (c->nargptr != NULL)
|
|
*c->nargptr++ = '\0';
|
|
} else {
|
|
int minus;
|
|
|
|
if ((c->argptr = c->argv[++c->arg]) == NULL) {
|
|
/* End of script - all ok */
|
|
c->state = CHAT_DONE;
|
|
return 0;
|
|
}
|
|
|
|
if (c->state == CHAT_EXPECT) {
|
|
/* Look for expect-send-expect sequence */
|
|
c->nargptr = c->argptr;
|
|
minus = 0;
|
|
while ((c->nargptr = chat_NextChar(c->nargptr, '-'))) {
|
|
c->nargptr++;
|
|
minus++;
|
|
}
|
|
|
|
if (minus % 2)
|
|
log_Printf(LogWARN, "chat_UpdateSet: \"%s\": Uneven number of"
|
|
" '-' chars, all ignored\n", c->argptr);
|
|
else if (minus) {
|
|
c->nargptr = chat_NextChar(c->argptr, '-');
|
|
*c->nargptr++ = '\0';
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* c->argptr now temporarily points into c->script (via c->argv)
|
|
* If it's an expect-send-expect sequence, we've just got the correct
|
|
* portion of that sequence.
|
|
*/
|
|
|
|
needcr = c->state == CHAT_SEND &&
|
|
(*c->argptr != '!' || c->argptr[1] == '!');
|
|
|
|
/* We leave room for a potential HDLC header in the target string */
|
|
ExpandString(c, c->argptr, c->exp + 2, sizeof c->exp - 2, needcr);
|
|
|
|
/*
|
|
* Now read our string. If it's not a special string, we unset
|
|
* ``special'' to break out of the loop.
|
|
*/
|
|
if (gotabort) {
|
|
if (c->abort.num < MAXABORTS) {
|
|
int len, i;
|
|
|
|
len = strlen(c->exp+2);
|
|
for (i = 0; i < c->abort.num; i++)
|
|
if (len > c->abort.string[i].len) {
|
|
int last;
|
|
|
|
for (last = c->abort.num; last > i; last--) {
|
|
c->abort.string[last].data = c->abort.string[last-1].data;
|
|
c->abort.string[last].len = c->abort.string[last-1].len;
|
|
}
|
|
break;
|
|
}
|
|
c->abort.string[i].len = len;
|
|
if ((c->abort.string[i].data = (char *)malloc(len+1)) != NULL) {
|
|
memcpy(c->abort.string[i].data, c->exp+2, len+1);
|
|
c->abort.num++;
|
|
}
|
|
} else
|
|
log_Printf(LogERROR, "chat_UpdateSet: too many abort strings\n");
|
|
gotabort = 0;
|
|
} else if (gottimeout) {
|
|
c->TimeoutSec = atoi(c->exp + 2);
|
|
if (c->TimeoutSec <= 0)
|
|
c->TimeoutSec = 30;
|
|
gottimeout = 0;
|
|
} else if (c->nargptr == NULL && !strcmp(c->exp+2, "ABORT"))
|
|
gotabort = 1;
|
|
else if (c->nargptr == NULL && !strcmp(c->exp+2, "TIMEOUT"))
|
|
gottimeout = 1;
|
|
else {
|
|
if (c->exp[2] == '!' && c->exp[3] != '!')
|
|
ExecStr(c->physical, c->exp + 3, c->exp + 3, sizeof c->exp - 3);
|
|
|
|
if (c->exp[2] == '\0') {
|
|
/* Empty string, reparse (this may be better as a `goto start') */
|
|
c->argptr = &arg_term;
|
|
return chat_UpdateSet(d, r, w, e, n);
|
|
}
|
|
|
|
special = 0;
|
|
}
|
|
}
|
|
|
|
if (special) {
|
|
if (gottimeout)
|
|
log_Printf(LogWARN, "chat_UpdateSet: TIMEOUT: Argument expected\n");
|
|
else if (gotabort)
|
|
log_Printf(LogWARN, "chat_UpdateSet: ABORT: Argument expected\n");
|
|
|
|
/* End of script - all ok */
|
|
c->state = CHAT_DONE;
|
|
return 0;
|
|
}
|
|
|
|
/* set c->argptr to point in the right place */
|
|
c->argptr = c->exp + (c->exp[2] == '!' ? 3 : 2);
|
|
c->arglen = strlen(c->argptr);
|
|
|
|
if (c->state == CHAT_EXPECT) {
|
|
/* We must check to see if the string's already been found ! */
|
|
char *begin, *end;
|
|
|
|
end = c->bufend - c->arglen + 1;
|
|
if (end < c->bufstart)
|
|
end = c->bufstart;
|
|
for (begin = c->bufstart; begin < end; begin++)
|
|
if (!strncmp(begin, c->argptr, c->arglen)) {
|
|
c->bufstart = begin + c->arglen;
|
|
c->argptr += c->arglen;
|
|
c->arglen = 0;
|
|
/* Continue - we've already read our expect string */
|
|
return chat_UpdateSet(d, r, w, e, n);
|
|
}
|
|
|
|
log_Printf(LogCHAT, "Expect(%d): %s\n", c->TimeoutSec, c->argptr);
|
|
chat_SetTimeout(c);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* We now have c->argptr pointing at what we want to expect/send and
|
|
* c->state saying what we want to do... we now know what to put in
|
|
* the fd_set :-)
|
|
*/
|
|
|
|
if (c->state == CHAT_EXPECT)
|
|
return physical_doUpdateSet(&c->physical->desc, r, NULL, e, n, 1);
|
|
else
|
|
return physical_doUpdateSet(&c->physical->desc, NULL, w, e, n, 1);
|
|
}
|
|
|
|
static int
|
|
chat_IsSet(struct fdescriptor *d, const fd_set *fdset)
|
|
{
|
|
struct chat *c = descriptor2chat(d);
|
|
return c->argptr && physical_IsSet(&c->physical->desc, fdset);
|
|
}
|
|
|
|
static void
|
|
chat_UpdateLog(struct chat *c, int in)
|
|
{
|
|
if (log_IsKept(LogCHAT) || log_IsKept(LogCONNECT)) {
|
|
/*
|
|
* If a linefeed appears in the last `in' characters of `c's input
|
|
* buffer, output from there, all the way back to the last linefeed.
|
|
* This is called for every read of `in' bytes.
|
|
*/
|
|
char *ptr, *end, *stop, ch;
|
|
int level;
|
|
|
|
level = log_IsKept(LogCHAT) ? LogCHAT : LogCONNECT;
|
|
if (in == -1)
|
|
end = ptr = c->bufend;
|
|
else {
|
|
ptr = c->bufend - in;
|
|
for (end = c->bufend - 1; end >= ptr; end--)
|
|
if (*end == '\n')
|
|
break;
|
|
}
|
|
|
|
if (end >= ptr) {
|
|
for (ptr = c->bufend - (in == -1 ? 1 : in + 1); ptr >= c->bufstart; ptr--)
|
|
if (*ptr == '\n')
|
|
break;
|
|
ptr++;
|
|
stop = NULL;
|
|
while (stop < end) {
|
|
if ((stop = memchr(ptr, '\n', end - ptr)) == NULL)
|
|
stop = end;
|
|
ch = *stop;
|
|
*stop = '\0';
|
|
if (level == LogCHAT || strstr(ptr, "CONNECT"))
|
|
log_Printf(level, "Received: %s\n", ptr);
|
|
*stop = ch;
|
|
ptr = stop + 1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
chat_Read(struct fdescriptor *d, struct bundle *bundle __unused,
|
|
const fd_set *fdset __unused)
|
|
{
|
|
struct chat *c = descriptor2chat(d);
|
|
|
|
if (c->state == CHAT_EXPECT) {
|
|
ssize_t in;
|
|
char *abegin, *ebegin, *begin, *aend, *eend, *end;
|
|
int n;
|
|
|
|
/*
|
|
* XXX - should this read only 1 byte to guarantee that we don't
|
|
* swallow any ppp talk from the peer ?
|
|
*/
|
|
in = BUFLEFT(c);
|
|
if (in > (ssize_t)sizeof c->buf / 2)
|
|
in = sizeof c->buf / 2;
|
|
|
|
in = physical_Read(c->physical, c->bufend, in);
|
|
if (in <= 0)
|
|
return;
|
|
|
|
/* `begin' and `end' delimit where we're going to strncmp() from */
|
|
ebegin = c->bufend - c->arglen + 1;
|
|
eend = ebegin + in;
|
|
if (ebegin < c->bufstart)
|
|
ebegin = c->bufstart;
|
|
|
|
if (c->abort.num) {
|
|
abegin = c->bufend - c->abort.string[0].len + 1;
|
|
aend = c->bufend - c->abort.string[c->abort.num-1].len + in + 1;
|
|
if (abegin < c->bufstart)
|
|
abegin = c->bufstart;
|
|
} else {
|
|
abegin = ebegin;
|
|
aend = eend;
|
|
}
|
|
begin = abegin < ebegin ? abegin : ebegin;
|
|
end = aend < eend ? eend : aend;
|
|
|
|
c->bufend += in;
|
|
|
|
chat_UpdateLog(c, in);
|
|
|
|
if (c->bufend > c->buf + sizeof c->buf / 2) {
|
|
/* Shuffle our receive buffer back a bit */
|
|
int chop;
|
|
|
|
for (chop = begin - c->buf; chop; chop--)
|
|
if (c->buf[chop] == '\n')
|
|
/* found some already-logged garbage to remove :-) */
|
|
break;
|
|
|
|
if (!chop)
|
|
chop = begin - c->buf;
|
|
|
|
if (chop) {
|
|
char *from, *to;
|
|
|
|
to = c->buf;
|
|
from = to + chop;
|
|
while (from < c->bufend)
|
|
*to++ = *from++;
|
|
c->bufstart -= chop;
|
|
c->bufend -= chop;
|
|
begin -= chop;
|
|
end -= chop;
|
|
abegin -= chop;
|
|
aend -= chop;
|
|
ebegin -= chop;
|
|
eend -= chop;
|
|
}
|
|
}
|
|
|
|
for (; begin < end; begin++)
|
|
if (begin >= ebegin && begin < eend &&
|
|
!strncmp(begin, c->argptr, c->arglen)) {
|
|
/* Got it ! */
|
|
timer_Stop(&c->timeout);
|
|
if (memchr(begin + c->arglen - 1, '\n',
|
|
c->bufend - begin - c->arglen + 1) == NULL) {
|
|
/* force it into the log */
|
|
end = c->bufend;
|
|
c->bufend = begin + c->arglen;
|
|
chat_UpdateLog(c, -1);
|
|
c->bufend = end;
|
|
}
|
|
c->bufstart = begin + c->arglen;
|
|
c->argptr += c->arglen;
|
|
c->arglen = 0;
|
|
break;
|
|
} else if (begin >= abegin && begin < aend) {
|
|
for (n = c->abort.num - 1; n >= 0; n--) {
|
|
if (begin + c->abort.string[n].len > c->bufend)
|
|
break;
|
|
if (!strncmp(begin, c->abort.string[n].data,
|
|
c->abort.string[n].len)) {
|
|
if (memchr(begin + c->abort.string[n].len - 1, '\n',
|
|
c->bufend - begin - c->abort.string[n].len + 1) == NULL) {
|
|
/* force it into the log */
|
|
end = c->bufend;
|
|
c->bufend = begin + c->abort.string[n].len;
|
|
chat_UpdateLog(c, -1);
|
|
c->bufend = end;
|
|
}
|
|
c->bufstart = begin + c->abort.string[n].len;
|
|
c->state = CHAT_FAILED;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static int
|
|
chat_Write(struct fdescriptor *d, struct bundle *bundle __unused,
|
|
const fd_set *fdset __unused)
|
|
{
|
|
struct chat *c = descriptor2chat(d);
|
|
int result = 0;
|
|
|
|
if (c->state == CHAT_SEND) {
|
|
int wrote;
|
|
|
|
if (strstr(c->argv[c->arg], "\\P")) /* Don't log the password */
|
|
log_Printf(LogCHAT, "Send: %s\n", c->argv[c->arg]);
|
|
else {
|
|
int sz;
|
|
|
|
sz = c->arglen - 1;
|
|
while (sz >= 0 && c->argptr[sz] == '\n')
|
|
sz--;
|
|
log_Printf(LogCHAT, "Send: %.*s\n", sz + 1, c->argptr);
|
|
}
|
|
|
|
if (physical_IsSync(c->physical)) {
|
|
/*
|
|
* XXX: Fix me
|
|
* This data should be stuffed down through the link layers
|
|
*/
|
|
/* There's always room for the HDLC header */
|
|
c->argptr -= 2;
|
|
c->arglen += 2;
|
|
memcpy(c->argptr, "\377\003", 2); /* Prepend HDLC header */
|
|
}
|
|
|
|
wrote = physical_Write(c->physical, c->argptr, c->arglen);
|
|
result = wrote > 0 ? 1 : 0;
|
|
if (wrote == -1) {
|
|
if (errno != EINTR) {
|
|
log_Printf(LogWARN, "chat_Write: %s\n", strerror(errno));
|
|
result = -1;
|
|
}
|
|
if (physical_IsSync(c->physical)) {
|
|
c->argptr += 2;
|
|
c->arglen -= 2;
|
|
}
|
|
} else if (wrote < 2 && physical_IsSync(c->physical)) {
|
|
/* Oops - didn't even write our HDLC header ! */
|
|
c->argptr += 2;
|
|
c->arglen -= 2;
|
|
} else {
|
|
c->argptr += wrote;
|
|
c->arglen -= wrote;
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
void
|
|
chat_Init(struct chat *c, struct physical *p)
|
|
{
|
|
c->desc.type = CHAT_DESCRIPTOR;
|
|
c->desc.UpdateSet = chat_UpdateSet;
|
|
c->desc.IsSet = chat_IsSet;
|
|
c->desc.Read = chat_Read;
|
|
c->desc.Write = chat_Write;
|
|
c->physical = p;
|
|
*c->script = '\0';
|
|
c->argc = 0;
|
|
c->arg = -1;
|
|
c->argptr = NULL;
|
|
c->nargptr = NULL;
|
|
c->bufstart = c->bufend = c->buf;
|
|
|
|
memset(&c->pause, '\0', sizeof c->pause);
|
|
memset(&c->timeout, '\0', sizeof c->timeout);
|
|
}
|
|
|
|
int
|
|
chat_Setup(struct chat *c, const char *data, const char *phone)
|
|
{
|
|
c->state = CHAT_EXPECT;
|
|
|
|
if (data == NULL) {
|
|
*c->script = '\0';
|
|
c->argc = 0;
|
|
} else {
|
|
strncpy(c->script, data, sizeof c->script - 1);
|
|
c->script[sizeof c->script - 1] = '\0';
|
|
c->argc = MakeArgs(c->script, c->argv, VECSIZE(c->argv), PARSE_NOHASH);
|
|
}
|
|
|
|
c->arg = -1;
|
|
c->argptr = NULL;
|
|
c->nargptr = NULL;
|
|
|
|
c->TimeoutSec = 30;
|
|
c->TimedOut = 0;
|
|
c->phone = phone;
|
|
c->abort.num = 0;
|
|
|
|
timer_Stop(&c->pause);
|
|
timer_Stop(&c->timeout);
|
|
|
|
return c->argc >= 0;
|
|
}
|
|
|
|
void
|
|
chat_Finish(struct chat *c)
|
|
{
|
|
timer_Stop(&c->pause);
|
|
timer_Stop(&c->timeout);
|
|
while (c->abort.num)
|
|
free(c->abort.string[--c->abort.num].data);
|
|
c->abort.num = 0;
|
|
}
|
|
|
|
void
|
|
chat_Destroy(struct chat *c)
|
|
{
|
|
chat_Finish(c);
|
|
}
|
|
|
|
/*
|
|
* \c don't add a cr
|
|
* \d Sleep a little (delay 2 seconds
|
|
* \n Line feed character
|
|
* \P Auth Key password
|
|
* \p pause 0.25 sec
|
|
* \r Carrige return character
|
|
* \s Space character
|
|
* \T Telephone number(s) (defined via `set phone')
|
|
* \t Tab character
|
|
* \U Auth User
|
|
*/
|
|
static char *
|
|
ExpandString(struct chat *c, const char *str, char *result, int reslen, int cr)
|
|
{
|
|
int len;
|
|
|
|
result[--reslen] = '\0';
|
|
while (*str && reslen > 0) {
|
|
switch (*str) {
|
|
case '\\':
|
|
str++;
|
|
switch (*str) {
|
|
case 'c':
|
|
cr = 0;
|
|
break;
|
|
case 'd': /* Delay 2 seconds */
|
|
chat_Pause(c, 2 * SECTICKS);
|
|
break;
|
|
case 'p':
|
|
chat_Pause(c, SECTICKS / 4);
|
|
break; /* Delay 0.25 seconds */
|
|
case 'n':
|
|
*result++ = '\n';
|
|
reslen--;
|
|
break;
|
|
case 'r':
|
|
*result++ = '\r';
|
|
reslen--;
|
|
break;
|
|
case 's':
|
|
*result++ = ' ';
|
|
reslen--;
|
|
break;
|
|
case 't':
|
|
*result++ = '\t';
|
|
reslen--;
|
|
break;
|
|
case 'P':
|
|
strncpy(result, c->physical->dl->bundle->cfg.auth.key, reslen);
|
|
len = strlen(result);
|
|
reslen -= len;
|
|
result += len;
|
|
break;
|
|
case 'T':
|
|
if (c->phone) {
|
|
strncpy(result, c->phone, reslen);
|
|
len = strlen(result);
|
|
reslen -= len;
|
|
result += len;
|
|
}
|
|
break;
|
|
case 'U':
|
|
strncpy(result, c->physical->dl->bundle->cfg.auth.name, reslen);
|
|
len = strlen(result);
|
|
reslen -= len;
|
|
result += len;
|
|
break;
|
|
default:
|
|
reslen--;
|
|
*result++ = *str;
|
|
break;
|
|
}
|
|
if (*str)
|
|
str++;
|
|
break;
|
|
case '^':
|
|
str++;
|
|
if (*str) {
|
|
*result++ = *str++ & 0x1f;
|
|
reslen--;
|
|
}
|
|
break;
|
|
default:
|
|
*result++ = *str++;
|
|
reslen--;
|
|
break;
|
|
}
|
|
}
|
|
if (--reslen > 0) {
|
|
if (cr)
|
|
*result++ = '\r';
|
|
}
|
|
if (--reslen > 0)
|
|
*result++ = '\0';
|
|
return (result);
|
|
}
|
|
|
|
static void
|
|
ExecStr(struct physical *physical, char *command, char *out, int olen)
|
|
{
|
|
pid_t pid;
|
|
int fids[2];
|
|
char *argv[MAXARGS], *vector[MAXARGS], *startout, *endout;
|
|
int stat, nb, argc, i;
|
|
|
|
log_Printf(LogCHAT, "Exec: %s\n", command);
|
|
if ((argc = MakeArgs(command, vector, VECSIZE(vector),
|
|
PARSE_REDUCE|PARSE_NOHASH)) <= 0) {
|
|
if (argc < 0)
|
|
log_Printf(LogWARN, "Syntax error in exec command\n");
|
|
*out = '\0';
|
|
return;
|
|
}
|
|
|
|
if (pipe(fids) < 0) {
|
|
log_Printf(LogCHAT, "Unable to create pipe in ExecStr: %s\n",
|
|
strerror(errno));
|
|
*out = '\0';
|
|
return;
|
|
}
|
|
if ((pid = fork()) == 0) {
|
|
command_Expand(argv, argc, (char const *const *)vector,
|
|
physical->dl->bundle, 0, getpid());
|
|
close(fids[0]);
|
|
timer_TermService();
|
|
if (fids[1] == STDIN_FILENO)
|
|
fids[1] = dup(fids[1]);
|
|
dup2(physical->fd, STDIN_FILENO);
|
|
dup2(fids[1], STDERR_FILENO);
|
|
dup2(STDIN_FILENO, STDOUT_FILENO);
|
|
close(3);
|
|
if (open(_PATH_TTY, O_RDWR) != 3)
|
|
open(_PATH_DEVNULL, O_RDWR); /* Leave it closed if it fails... */
|
|
for (i = getdtablesize(); i > 3; i--)
|
|
fcntl(i, F_SETFD, 1);
|
|
#ifndef NOSUID
|
|
setuid(ID0realuid());
|
|
#endif
|
|
execvp(argv[0], argv);
|
|
fprintf(stderr, "execvp: %s: %s\n", argv[0], strerror(errno));
|
|
_exit(127);
|
|
} else {
|
|
char *name = strdup(vector[0]);
|
|
|
|
close(fids[1]);
|
|
endout = out + olen - 1;
|
|
startout = out;
|
|
while (out < endout) {
|
|
nb = read(fids[0], out, 1);
|
|
if (nb <= 0)
|
|
break;
|
|
out++;
|
|
}
|
|
*out = '\0';
|
|
close(fids[0]);
|
|
close(fids[1]);
|
|
waitpid(pid, &stat, WNOHANG);
|
|
if (WIFSIGNALED(stat)) {
|
|
log_Printf(LogWARN, "%s: signal %d\n", name, WTERMSIG(stat));
|
|
free(name);
|
|
*out = '\0';
|
|
return;
|
|
} else if (WIFEXITED(stat)) {
|
|
switch (WEXITSTATUS(stat)) {
|
|
case 0:
|
|
free(name);
|
|
break;
|
|
case 127:
|
|
log_Printf(LogWARN, "%s: %s\n", name, startout);
|
|
free(name);
|
|
*out = '\0';
|
|
return;
|
|
break;
|
|
default:
|
|
log_Printf(LogWARN, "%s: exit %d\n", name, WEXITSTATUS(stat));
|
|
free(name);
|
|
*out = '\0';
|
|
return;
|
|
break;
|
|
}
|
|
} else {
|
|
log_Printf(LogWARN, "%s: Unexpected exit result\n", name);
|
|
free(name);
|
|
*out = '\0';
|
|
return;
|
|
}
|
|
}
|
|
}
|