/*
* utils.c - various utility functions used in pppd.
*
- * Copyright (c) 1999 The Australian National University.
- * All rights reserved.
+ * Copyright (c) 1999-2002 Paul Mackerras. All rights reserved.
*
- * Redistribution and use in source and binary forms are permitted
- * provided that the above copyright notice and this paragraph are
- * duplicated in all such forms and that any documentation,
- * advertising materials, and other materials related to such
- * distribution and use acknowledge that the software was developed
- * by the Australian National University. The name of the University
- * may not be used to endorse or promote products derived from this
- * software without specific prior written permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ * 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. The name(s) of the authors of this software must not be used to
+ * endorse or promote products derived from this software without
+ * prior written permission.
+ *
+ * 3. Redistributions of any form whatsoever must retain the following
+ * acknowledgment:
+ * "This product includes software developed by Paul Mackerras
+ * <paulus@samba.org>".
+ *
+ * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO
+ * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
+ * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
+ * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
-#define RCSID "$Id: utils.c,v 1.13 2001/03/16 02:08:13 paulus Exp $"
+#define RCSID "$Id: utils.c,v 1.24 2004/11/04 10:02:26 paulus Exp $"
#include <stdio.h>
#include <ctype.h>
#include <fcntl.h>
#include <syslog.h>
#include <netdb.h>
+#include <time.h>
#include <utmp.h>
#include <pwd.h>
#include <sys/param.h>
#endif
#include "pppd.h"
+#include "fsm.h"
+#include "lcp.h"
static const char rcsid[] = RCSID;
/*
* slprintf - format a message into a buffer. Like sprintf except we
* also specify the length of the output buffer, and we handle
- * %r (recursive format), %m (error message), %v (visible string),
+ * %m (error message), %v (visible string),
* %q (quoted string), %t (current time) and %I (IP address) formats.
* Doesn't do floating-point formats.
* Returns the number of chars put into buf.
neg = 0;
++fmt;
switch (c) {
+ case 'l':
+ c = *fmt++;
+ switch (c) {
+ case 'd':
+ val = va_arg(args, long);
+ if (val < 0) {
+ neg = 1;
+ val = -val;
+ }
+ base = 10;
+ break;
+ case 'u':
+ val = va_arg(args, unsigned long);
+ base = 10;
+ break;
+ default:
+ *buf++ = '%'; --buflen;
+ *buf++ = 'l'; --buflen;
+ --fmt; /* so %lz outputs %lz etc. */
+ continue;
+ }
+ break;
case 'd':
i = va_arg(args, int);
if (i < 0) {
(ip >> 16) & 0xff, (ip >> 8) & 0xff, ip & 0xff);
str = num;
break;
+#if 0 /* not used, and breaks on S/390, apparently */
case 'r':
f = va_arg(args, char *);
#ifndef __powerpc__
buf += n;
buflen -= n;
continue;
+#endif
case 't':
time(&t);
str = ctime(&t);
logit(LOG_ERR, fmt, pvar);
va_end(pvar);
+ ++error_count;
}
/*
va_end(pvar);
}
+/*
+ * dump_packet - print out a packet in readable form if it is interesting.
+ * Assumes len >= PPP_HDRLEN.
+ */
+void
+dump_packet(const char *tag, unsigned char *p, int len)
+{
+ int proto;
+
+ if (!debug)
+ return;
+
+ /*
+ * don't print LCP echo request/reply packets if debug <= 1
+ * and the link is up.
+ */
+ proto = (p[2] << 8) + p[3];
+ if (debug <= 1 && unsuccess == 0 && proto == PPP_LCP
+ && len >= PPP_HDRLEN + HEADERLEN) {
+ unsigned char *lcp = p + PPP_HDRLEN;
+ int l = (lcp[2] << 8) + lcp[3];
+
+ if ((lcp[0] == ECHOREQ || lcp[0] == ECHOREP)
+ && l >= HEADERLEN && l <= len - PPP_HDRLEN)
+ return;
+ }
+
+ dbglog("%s %P", tag, p, len);
+}
+
+/*
+ * complete_read - read a full `count' bytes from fd,
+ * unless end-of-file or an error other than EINTR is encountered.
+ */
+ssize_t
+complete_read(int fd, void *buf, size_t count)
+{
+ size_t done;
+ ssize_t nb;
+ char *ptr = buf;
+
+ for (done = 0; done < count; ) {
+ nb = read(fd, ptr, count - done);
+ if (nb < 0) {
+ if (errno == EINTR)
+ continue;
+ return -1;
+ }
+ if (nb == 0)
+ break;
+ done += nb;
+ ptr += nb;
+ }
+ return done;
+}
+
/* Procedures for locking the serial device using a lock file. */
#ifndef LOCK_DIR
-#ifdef _linux_
+#ifdef __linux__
#define LOCK_DIR "/var/lock"
#else
#ifdef SVR4
result = mklock (dev, (void *) 0);
if (result == 0) {
- strlcpy(lock_file, sizeof(lock_file), dev);
+ strlcpy(lock_file, dev, sizeof(lock_file));
return 0;
}
major(sbuf.st_rdev), minor(sbuf.st_rdev));
#else
char *p;
+ char lockdev[MAXPATHLEN];
+
+ if ((p = strstr(dev, "dev/")) != NULL) {
+ dev = p + 4;
+ strncpy(lockdev, dev, MAXPATHLEN-1);
+ lockdev[MAXPATHLEN-1] = 0;
+ while ((p = strrchr(lockdev, '/')) != NULL) {
+ *p = '_';
+ }
+ dev = lockdev;
+ } else
+ if ((p = strrchr(dev, '/')) != NULL)
+ dev = p + 1;
- if ((p = strrchr(dev, '/')) != NULL)
- dev = p + 1;
slprintf(lock_file, sizeof(lock_file), "%s/LCK..%s", LOCK_DIR, dev);
#endif
projects / ppp.git / blobdiff