ISC dhcp, needs security audit for sure

1 files changed, 391 insertions, 0 deletions

diff --git a/usr.sbin/dhcp/common/errwarn.c b/usr.sbin/dhcp/common/errwarn.c
new file mode 100644
index 00000000000..761cee47859
--- /dev/null
+++ b/usr.sbin/dhcp/common/errwarn.c
@@ -0,0 +1,391 @@
+/* errwarn.c
+
+   Errors and warnings... */
+
+/*
+ * Copyright (c) 1996 The Internet Software Consortium.
+ * All Rights Reserved.
+ * Copyright (c) 1995 RadioMail Corporation.  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.
+ * 3. Neither the name of RadioMail Corporation, the Internet Software
+ *    Consortium nor the names of its contributors may be used to endorse
+ *    or promote products derived from this software without specific
+ *    prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY RADIOMAIL CORPORATION, THE INTERNET
+ * SOFTWARE CONSORTIUM 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 RADIOMAIL CORPORATION 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.
+ *
+ * This software was written for RadioMail Corporation by Ted Lemon
+ * under a contract with Vixie Enterprises.   Further modifications have
+ * been made for the Internet Software Consortium under a contract
+ * with Vixie Laboratories.
+ */
+
+#ifndef lint
+static char copyright[] =
+"$Id: errwarn.c,v 1.1 1998/08/18 03:43:25 deraadt Exp $ Copyright (c) 1996 The Internet Software Consortium.  All rights reserved.\n";
+#endif /* not lint */
+
+#include "dhcpd.h"
+#include <errno.h>
+
+static void do_percentm PROTO ((char *obuf, char *ibuf));
+
+static char mbuf [1024];
+static char fbuf [1024];
+
+int warnings_occurred;
+
+/* Log an error message, then exit... */
+
+void error (ANSI_DECL(char *) fmt, VA_DOTDOTDOT)
+     KandR (char *fmt;)
+     va_dcl
+{
+  va_list list;
+  extern int logged_in;
+
+  do_percentm (fbuf, fmt);
+
+  VA_start (list, fmt);
+  vsnprintf (mbuf, sizeof mbuf, fbuf, list);
+  va_end (list);
+
+#ifndef DEBUG
+  syslog (log_priority | LOG_ERR, mbuf);
+#endif
+
+  /* Also log it to stderr? */
+  if (log_perror) {
+	  write (2, mbuf, strlen (mbuf));
+	  write (2, "\n", 1);
+  }
+
+  syslog (LOG_CRIT, "exiting.");
+  if (log_perror) {
+	fprintf (stderr, "exiting.\n");
+	fflush (stderr);
+  }
+  cleanup ();
+  exit (1);
+}
+
+/* Log a warning message... */
+
+int warn (ANSI_DECL (char *) fmt, VA_DOTDOTDOT)
+     KandR (char *fmt;)
+     va_dcl
+{
+  va_list list;
+
+  do_percentm (fbuf, fmt);
+
+  VA_start (list, fmt);
+  vsnprintf (mbuf, sizeof mbuf, fbuf, list);
+  va_end (list);
+
+#ifndef DEBUG
+  syslog (log_priority | LOG_ERR, mbuf);
+#endif
+
+  if (log_perror) {
+	  write (2, mbuf, strlen (mbuf));
+	  write (2, "\n", 1);
+  }
+
+  return 0;
+}
+
+/* Log a note... */
+
+int note (ANSI_DECL (char *) fmt, VA_DOTDOTDOT)
+     KandR (char *fmt;)
+     va_dcl
+{
+  va_list list;
+
+  do_percentm (fbuf, fmt);
+
+  VA_start (list, fmt);
+  vsnprintf (mbuf, sizeof mbuf, fbuf, list);
+  va_end (list);
+
+#ifndef DEBUG
+  syslog (log_priority | LOG_INFO, mbuf);
+#endif
+
+  if (log_perror) {
+	  write (2, mbuf, strlen (mbuf));
+	  write (2, "\n", 1);
+  }
+
+  return 0;
+}
+
+/* Log a debug message... */
+
+int debug (ANSI_DECL (char *) fmt, VA_DOTDOTDOT)
+     KandR (char *fmt;)
+     va_dcl
+{
+  va_list list;
+
+  do_percentm (fbuf, fmt);
+
+  VA_start (list, fmt);
+  vsnprintf (mbuf, sizeof mbuf, fbuf, list);
+  va_end (list);
+
+#ifndef DEBUG
+  syslog (log_priority | LOG_DEBUG, mbuf);
+#endif
+
+  if (log_perror) {
+	  write (2, mbuf, strlen (mbuf));
+	  write (2, "\n", 1);
+  }
+
+  return 0;
+}
+
+/* Find %m in the input string and substitute an error message string. */
+
+static void do_percentm (obuf, ibuf)
+     char *obuf;
+     char *ibuf;
+{
+	char *s = ibuf;
+	char *p = obuf;
+	int infmt = 0;
+	const char *m;
+
+	while (*s)
+	{
+		if (infmt)
+		{
+			if (*s == 'm')
+			{
+#ifndef __CYGWIN32__
+				m = strerror (errno);
+#else
+				m = pWSAError ();
+#endif
+				if (!m)
+					m = "<unknown error>";
+				strcpy (p - 1, m);
+				p += strlen (p);
+				++s;
+			}
+			else
+				*p++ = *s++;
+			infmt = 0;
+		}
+		else
+		{
+			if (*s == '%')
+				infmt = 1;
+			*p++ = *s++;
+		}
+	}
+	*p = 0;
+}
+
+
+int parse_warn (ANSI_DECL (char *) fmt, VA_DOTDOTDOT)
+	KandR (char *fmt;)
+	va_dcl
+{
+	va_list list;
+	static char spaces [] = "                                                                                ";
+	
+	do_percentm (mbuf, fmt);
+#ifndef NO_SNPRINTF
+	snprintf (fbuf, sizeof fbuf, "%s line %d: %s",
+		  tlname, lexline, mbuf);
+#else
+	sprintf (fbuf, "%s line %d: %s",
+		 tlname, lexline, mbuf);
+#endif
+	
+	VA_start (list, fmt);
+	vsnprintf (mbuf, sizeof mbuf, fbuf, list);
+	va_end (list);
+
+#ifndef DEBUG
+	syslog (log_priority | LOG_ERR, mbuf);
+	syslog (log_priority | LOG_ERR, token_line);
+	if (lexline < 81)
+		syslog (log_priority | LOG_ERR,
+			"%s^", &spaces [sizeof spaces - lexchar]);
+#endif
+
+	if (log_perror) {
+		write (2, mbuf, strlen (mbuf));
+		write (2, "\n", 1);
+		write (2, token_line, strlen (token_line));
+		write (2, "\n", 1);
+		write (2, spaces, lexchar - 1);
+		write (2, "^\n", 2);
+	}
+
+	warnings_occurred = 1;
+
+	return 0;
+}
+
+#ifdef NO_STRERROR
+char *strerror (err)
+	int err;
+{
+	extern char *sys_errlist [];
+	extern int sys_nerr;
+	static char errbuf [128];
+
+	if (err < 0 || err >= sys_nerr) {
+		sprintf (errbuf, "Error %d", err);
+		return errbuf;
+	}
+	return sys_errlist [err];
+}
+#endif /* NO_STRERROR */
+
+#ifdef _WIN32
+char *pWSAError ()
+{
+  int err = WSAGetLastError ();
+
+  switch (err)
+    {
+    case WSAEACCES:
+      return "Permission denied";
+    case WSAEADDRINUSE:
+      return "Address already in use";
+    case WSAEADDRNOTAVAIL:
+      return "Cannot assign requested address";
+    case WSAEAFNOSUPPORT:
+      return "Address family not supported by protocol family";
+    case WSAEALREADY:
+      return "Operation already in progress";
+    case WSAECONNABORTED:
+      return "Software caused connection abort";
+    case WSAECONNREFUSED:
+      return "Connection refused";
+    case WSAECONNRESET:
+      return "Connection reset by peer";
+    case WSAEDESTADDRREQ:
+      return "Destination address required";
+    case WSAEFAULT:
+      return "Bad address";
+    case WSAEHOSTDOWN:
+      return "Host is down";
+    case WSAEHOSTUNREACH:
+      return "No route to host";
+    case WSAEINPROGRESS:
+      return "Operation now in progress";
+    case WSAEINTR:
+      return "Interrupted function call";
+    case WSAEINVAL:
+      return "Invalid argument";
+    case WSAEISCONN:
+      return "Socket is already connected";
+    case WSAEMFILE:
+      return "Too many open files";
+    case WSAEMSGSIZE:
+      return "Message too long";
+    case WSAENETDOWN:
+      return "Network is down";
+    case WSAENETRESET:
+      return "Network dropped connection on reset";
+    case WSAENETUNREACH:
+      return "Network is unreachable";
+    case WSAENOBUFS:
+      return "No buffer space available";
+    case WSAENOPROTOOPT:
+      return "Bad protocol option";
+    case WSAENOTCONN:
+      return "Socket is not connected";
+    case WSAENOTSOCK:
+      return "Socket operation on non-socket";
+    case WSAEOPNOTSUPP:
+      return "Operation not supported";
+    case WSAEPFNOSUPPORT:
+      return "Protocol family not supported";
+    case WSAEPROCLIM:
+      return "Too many processes";
+    case WSAEPROTONOSUPPORT:
+      return "Protocol not supported";
+    case WSAEPROTOTYPE:
+      return "Protocol wrong type for socket";
+    case WSAESHUTDOWN:
+      return "Cannot send after socket shutdown";
+    case WSAESOCKTNOSUPPORT:
+      return "Socket type not supported";
+    case WSAETIMEDOUT:
+      return "Connection timed out";
+    case WSAEWOULDBLOCK:
+      return "Resource temporarily unavailable";
+    case WSAHOST_NOT_FOUND:
+      return "Host not found";
+#if 0
+    case WSA_INVALID_HANDLE:
+      return "Specified event object handle is invalid";
+    case WSA_INVALID_PARAMETER:
+      return "One or more parameters are invalid";
+    case WSAINVALIDPROCTABLE:
+      return "Invalid procedure table from service provider";
+    case WSAINVALIDPROVIDER:
+      return "Invalid service provider version number";
+    case WSA_IO_PENDING:
+      return "Overlapped operations will complete later";
+    case WSA_IO_INCOMPLETE:
+      return "Overlapped I/O event object not in signaled state";
+    case WSA_NOT_ENOUGH_MEMORY:
+      return "Insufficient memory available";
+#endif
+    case WSANOTINITIALISED:
+      return "Successful WSAStartup not yet performer";
+    case WSANO_DATA:
+      return "Valid name, no data record of requested type";
+    case WSANO_RECOVERY:
+      return "This is a non-recoverable error";
+#if 0
+    case WSAPROVIDERFAILEDINIT:
+      return "Unable to initialize a service provider";
+    case WSASYSCALLFAILURE:
+      return "System call failure";
+#endif
+    case WSASYSNOTREADY:
+      return "Network subsystem is unavailable";
+    case WSATRY_AGAIN:
+      return "Non-authoritative host not found";
+    case WSAVERNOTSUPPORTED:
+      return "WINSOCK.DLL version out of range";
+    case WSAEDISCON:
+      return "Graceful shutdown in progress";
+#if 0
+    case WSA_OPERATION_ABORTED:
+      return "Overlapped operation aborted";
+#endif
+    }
+  return "Unknown WinSock error";
+}
+#endif /* _WIN32 */