From 4cdfa7814cda254acabe1040a2b2d0c4f5bc4295 Mon Sep 17 00:00:00 2001
From: markm <markm@FreeBSD.org>
Date: Thu, 21 Mar 2002 22:50:02 +0000
Subject: Vendor import of OPIE 2.4

---
 contrib/opie/libopie/Makefile.in       |  14 +-
 contrib/opie/libopie/accessfile.c      |   2 +-
 contrib/opie/libopie/atob8.c           |   6 +-
 contrib/opie/libopie/btoa8.c           |   8 +-
 contrib/opie/libopie/btoe.c            |  15 +-
 contrib/opie/libopie/btoh.c            |   7 +-
 contrib/opie/libopie/challenge.c       |   8 +-
 contrib/opie/libopie/generator.c       | 364 +++++++++++++++++++++++++++++----
 contrib/opie/libopie/getsequence.c     |   2 +-
 contrib/opie/libopie/getutmpentry.c    |   4 +-
 contrib/opie/libopie/hash.c            |  34 +--
 contrib/opie/libopie/hashlen.c         |  44 ++--
 contrib/opie/libopie/insecure.c        |  28 ++-
 contrib/opie/libopie/keycrunch.c       |   8 +-
 contrib/opie/libopie/lock.c            |   7 +-
 contrib/opie/libopie/login.c           |  25 ++-
 contrib/opie/libopie/logwtmp.c         |  27 ++-
 contrib/opie/libopie/lookup.c          |   4 +-
 contrib/opie/libopie/md4c.c            |   2 +-
 contrib/opie/libopie/md5c.c            |   2 +-
 contrib/opie/libopie/newseed.c         | 109 +++++-----
 contrib/opie/libopie/open.c            |  26 ++-
 contrib/opie/libopie/parsechallenge.c  |   8 +-
 contrib/opie/libopie/passcheck.c       |   2 +-
 contrib/opie/libopie/passwd.c          |  16 +-
 contrib/opie/libopie/randomchallenge.c |   8 +-
 contrib/opie/libopie/readpass.c        |   2 +-
 contrib/opie/libopie/readrec.c         |  19 +-
 contrib/opie/libopie/unlock.c          |   2 +-
 contrib/opie/libopie/verify.c          |  67 +++---
 contrib/opie/libopie/version.c         |   2 +-
 contrib/opie/libopie/writerec.c        |  17 +-
 32 files changed, 643 insertions(+), 246 deletions(-)

(limited to 'contrib/opie/libopie')

diff --git a/contrib/opie/libopie/Makefile.in b/contrib/opie/libopie/Makefile.in
index 2b3c96c..dfc1c6f 100644
--- a/contrib/opie/libopie/Makefile.in
+++ b/contrib/opie/libopie/Makefile.in
@@ -2,30 +2,34 @@
 # Makefile.in/Makefile: Directions for building libopie.
 #
 # %%% copyright-cmetz-96
-# This software is Copyright 1996-1998 by Craig Metz, All Rights Reserved.
-# The Inner Net License Version 2 applies to this software.
+# This software is Copyright 1996-2001 by Craig Metz, All Rights Reserved.
+# The Inner Net License Version 3 applies to this software.
 # You should have received a copy of the license with this software. If
 # you didn't get a copy, you may request one from <license@inner.net>.
 #
 #	History:
 #
+#	Modified by cmetz for OPIE 2.4. Add libmissing to include header path.
+#		Use ar 'cr' instead of 'r'. Renamed realclean to distclean.
 #	Modified by cmetz for OPIE 2.31. Added logwtmp.o
 #       Created by cmetz for OPIE 2.3 using old Makefiles as a guide.
 
 OBJS=md4c.o md5c.o atob8.o btoa8.o btoh.o challenge.o getsequence.o hash.o hashlen.o keycrunch.o lock.o lookup.o newseed.o parsechallenge.o passcheck.o passwd.o randomchallenge.o readpass.o unlock.o verify.o version.o btoe.o accessfile.o generator.o insecure.o getutmpentry.o readrec.o writerec.o login.o open.o logwtmp.o # sha.o
 
 CC=@CC@
-CFLAGS=$(CFL) -I..
+CFLAGS=$(CFL) -I.. -I../libmissing
 TARGET=libopie.a
 
 all: $(TARGET)
 
 $(TARGET): $(OBJS)
-	ar r $(TARGET) $(OBJS)
+	ar cr $(TARGET) $(OBJS)
 	@RANLIB@ $(TARGET)
 
 clean:
 	-rm -f $(OBJS) $(TARGET)
 
-realclean: clean
+realclean: distclean
+
+distclean: clean
 	-rm -f *~ core* "\#*\#" *.o *.a Makefile
diff --git a/contrib/opie/libopie/accessfile.c b/contrib/opie/libopie/accessfile.c
index 0fe1d12..8e2765f 100644
--- a/contrib/opie/libopie/accessfile.c
+++ b/contrib/opie/libopie/accessfile.c
@@ -2,7 +2,7 @@
         overrides.
 
 %%% portions-copyright-cmetz-96
-Portions of this software are Copyright 1996-1998 by Craig Metz, All Rights
+Portions of this software are Copyright 1996-1999 by Craig Metz, All Rights
 Reserved. The Inner Net License Version 2 applies to these portions of
 the software.
 You should have received a copy of the license with this software. If
diff --git a/contrib/opie/libopie/atob8.c b/contrib/opie/libopie/atob8.c
index 78a7d43..77367f1 100644
--- a/contrib/opie/libopie/atob8.c
+++ b/contrib/opie/libopie/atob8.c
@@ -1,7 +1,7 @@
 /* atob8.c: The opieatob8() library function.
 
 %%% portions-copyright-cmetz-96
-Portions of this software are Copyright 1996-1998 by Craig Metz, All Rights
+Portions of this software are Copyright 1996-1999 by Craig Metz, All Rights
 Reserved. The Inner Net License Version 2 applies to these portions of
 the software.
 You should have received a copy of the license with this software. If
@@ -14,6 +14,7 @@ License Agreement applies to this software.
 
         History:
 
+	Modified by cmetz for OPIE 2.4. Use struct opie_otpkey for binary arg.
 	Modified by cmetz for OPIE 2.3. Return the output variable.
 	    Don't check parameters.
 	Modified by cmetz for OPIE 2.2. Use FUNCTION declaration et al.
@@ -27,10 +28,11 @@ License Agreement applies to this software.
 
 /* Convert 8-byte hex-ascii string to binary array
  */
-char *opieatob8 FUNCTION((out, in), char *out AND char *in)
+char *opieatob8 FUNCTION((out, in), struct opie_otpkey *outkey AND char *in)
 {
   register int i;
   register int val;
+  unsigned char *out = (unsigned char *)outkey;
 
   for (i = 0; i < 8; i++) {
     while (*in == ' ' || *in == '\t')
diff --git a/contrib/opie/libopie/btoa8.c b/contrib/opie/libopie/btoa8.c
index 2b3e885..b66306f 100644
--- a/contrib/opie/libopie/btoa8.c
+++ b/contrib/opie/libopie/btoa8.c
@@ -1,13 +1,14 @@
 /* btoa8.c: The opiebtoa8() library function.
 
 %%% copyright-cmetz-96
-This software is Copyright 1996-1998 by Craig Metz, All Rights Reserved.
-The Inner Net License Version 2 applies to this software.
+This software is Copyright 1996-2001 by Craig Metz, All Rights Reserved.
+The Inner Net License Version 3 applies to this software.
 You should have received a copy of the license with this software. If
 you didn't get a copy, you may request one from <license@inner.net>.
 
         History:
 
+	Modified by cmetz for OPIE 2.4. Use struct opie_otpkey for binary arg. 
 	Created by cmetz for OPIE 2.3 (quick re-write).
 */      
 
@@ -17,9 +18,10 @@ you didn't get a copy, you may request one from <license@inner.net>.
 static char hextochar[16] = 
 {'0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f'};
 
-char *opiebtoa8 FUNCTION((out, in), char *out AND char *in)
+char *opiebtoa8 FUNCTION((out, in), char *out AND struct opie_otpkey *inkey)
 {
   int i;
+  unsigned char *in = (unsigned char *)inkey;
   char *c = out;
 
   for (i = 0; i < 8; i++) {
diff --git a/contrib/opie/libopie/btoe.c b/contrib/opie/libopie/btoe.c
index b7ed3cde..fa91077 100644
--- a/contrib/opie/libopie/btoe.c
+++ b/contrib/opie/libopie/btoe.c
@@ -3,7 +3,7 @@
           64 bit OTP.
 
 %%% portions-copyright-cmetz-96
-Portions of this software are Copyright 1996-1998 by Craig Metz, All Rights
+Portions of this software are Copyright 1996-1999 by Craig Metz, All Rights
 Reserved. The Inner Net License Version 2 applies to these portions of
 the software.
 You should have received a copy of the license with this software. If
@@ -16,6 +16,7 @@ License Agreement applies to this software.
 
 	History:
 
+        Modified by cmetz for OPIE 2.4. Use struct opie_otpkey for binary arg. 
         Modified by cmetz for OPIE 2.2. Use FUNCTION declaration et al.
               Remove unnecessary address futzing with Wp in opiebtoe.
               Changed unsigned long to UINT4 for Alpha.
@@ -2088,13 +2089,13 @@ static char Wp[2048][4] =
 };
 
 /* Encode 8 bytes in 'c' as a string of English words. */
-char *opiebtoe FUNCTION((engout, c), char *engout AND char *c)
+char *opiebtoe FUNCTION((engout, c), char *engout AND struct opie_otpkey *c)
 {
-  char cp[9];	/* add in room for the parity 2 bits */
+  char cp[sizeof(struct opie_otpkey) + 1];	/* add in room for the parity 2 bits */
   int p, i;
 
   engout[0] = '\0';
-  memcpy(cp, c, 8);
+  memcpy(cp, c, sizeof(struct opie_otpkey));
   /* compute parity */
   for (p = 0, i = 0; i < 64; i += 2)
     p += extract(cp, i, 2);
@@ -2120,7 +2121,7 @@ char *opiebtoe FUNCTION((engout, c), char *engout AND char *c)
  *        -1 badly formed in put ie > 4 char word
  *        -2 words OK but parity is wrong
  */
-int opieetob FUNCTION((out, e), char *out AND char *e)
+int opieetob FUNCTION((out, e), struct opie_otpkey *out AND char *e)
 {
   char *word, *c, *input, b[9];
   int i, p, v, l, low, high, rval = -1;
@@ -2137,7 +2138,7 @@ int opieetob FUNCTION((out, e), char *out AND char *e)
   strncpy(input, e, i);
   input[i] = 0;
   memset(b, 0, sizeof(b));
-  memset(out, 0, 8);
+  memset(out, 0, sizeof(struct opie_otpkey));
 
   for (i = 0, p = 0, word = c = input; i < 6; i++, p += 11) {
     while (*c && !isalpha(*c)) c++;
@@ -2187,7 +2188,7 @@ int opieetob FUNCTION((out, e), char *out AND char *e)
     goto opiebtoeret;
   }
 
-  memcpy(out, b, 8);
+  memcpy(out, b, sizeof(struct opie_otpkey));
 
   rval = 1;
 
diff --git a/contrib/opie/libopie/btoh.c b/contrib/opie/libopie/btoh.c
index c5ed150..45fb4c8 100644
--- a/contrib/opie/libopie/btoh.c
+++ b/contrib/opie/libopie/btoh.c
@@ -1,8 +1,8 @@
 /* btoh.c: The opiebtoh() library function.
 
 %%% copyright-cmetz-96
-This software is Copyright 1996-1998 by Craig Metz, All Rights Reserved.
-The Inner Net License Version 2 applies to this software.
+This software is Copyright 1996-2001 by Craig Metz, All Rights Reserved.
+The Inner Net License Version 3 applies to this software.
 You should have received a copy of the license with this software. If
 you didn't get a copy, you may request one from <license@inner.net>.
 
@@ -17,10 +17,11 @@ you didn't get a copy, you may request one from <license@inner.net>.
 static char hextochar[16] = 
 {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};
 
-char *opiebtoh FUNCTION((out, in), char *out AND char *in)
+char *opiebtoh FUNCTION((out, in), char *out AND struct opie_otpkey *inkey)
 {
   int i;
   char *c = out;
+  unsigned char *in = (unsigned char *)inkey;
 
   for (i = 0; i < 4; i++) {
     *(c++) = hextochar[((*in) >> 4) & 0x0f];
diff --git a/contrib/opie/libopie/challenge.c b/contrib/opie/libopie/challenge.c
index 0f3fec5..149403d 100644
--- a/contrib/opie/libopie/challenge.c
+++ b/contrib/opie/libopie/challenge.c
@@ -1,7 +1,7 @@
 /* challenge.c: The opiechallenge() library function.
 
 %%% portions-copyright-cmetz-96
-Portions of this software are Copyright 1996-1998 by Craig Metz, All Rights
+Portions of this software are Copyright 1996-1999 by Craig Metz, All Rights
 Reserved. The Inner Net License Version 2 applies to these portions of
 the software.
 You should have received a copy of the license with this software. If
@@ -66,11 +66,11 @@ int opiechallenge FUNCTION((mp, name, ss), struct opie *mp AND char *name AND ch
 #endif /* DEBUG */
   }
 
-  if (rval) {
+  if (rval ||
+    (snprintf(ss, OPIE_CHALLENGE_MAX, "otp-%s %d %s ext", algids[MDX], mp->opie_n - 1, mp->opie_seed) >= OPIE_CHALLENGE_MAX)) {
     opierandomchallenge(ss);
     memset(mp, 0, sizeof(*mp));
-  } else
-    sprintf(ss, "otp-%s %d %s ext", algids[MDX], mp->opie_n - 1, mp->opie_seed);
+  }
 
   return rval;
 }
diff --git a/contrib/opie/libopie/generator.c b/contrib/opie/libopie/generator.c
index 618a131..24c6a73 100644
--- a/contrib/opie/libopie/generator.c
+++ b/contrib/opie/libopie/generator.c
@@ -1,7 +1,7 @@
 /* generator.c: The opiegenerator() library function.
 
 %%% portions-copyright-cmetz-96
-Portions of this software are Copyright 1996-1998 by Craig Metz, All Rights
+Portions of this software are Copyright 1996-1999 by Craig Metz, All Rights
 Reserved. The Inner Net License Version 2 applies to these portions of
 the software.
 You should have received a copy of the license with this software. If
@@ -9,6 +9,9 @@ you didn't get a copy, you may request one from <license@inner.net>.
 
         History:
 
+	Modified by cmetz for OPIE 2.4. Added opieauto code based on
+	        previously released test code. Renamed buffer to challenge.
+		Use struct opie_otpkey for keys.
 	Modified by cmetz for OPIE 2.32. If secret=NULL, always return
 		as if opieauto returned "get the secret". Renamed
 		_opieparsechallenge() to __opieparsechallenge(). Check
@@ -31,73 +34,362 @@ you didn't get a copy, you may request one from <license@inner.net>.
 #if HAVE_STRING_H
 #include <string.h>
 #endif /* HAVE_STRING_H */
+#if OPIEAUTO
+#include <errno.h>
+#if HAVE_STDLIB_H
+#include <stdlib.h>
+#endif /* HAVE_STDLIB_H */
+#include <sys/stat.h>
+
+#include <sys/socket.h>
+#include <sys/un.h>
+#endif /* OPIEAUTO */
+#if DEBUG
+#include <syslog.h>
+#endif /* DEBUG */
 #include "opie.h"
 
 static char *algids[] = { NULL, NULL, NULL, "sha1", "md4", "md5" };
 
-int opiegenerator FUNCTION((buffer, secret, response), char *buffer AND char *secret AND char *response)
+#if OPIEAUTO
+#ifndef max
+#define max(x, y) (((x) > (y)) ? (x) : (y))
+#endif /* max */
+
+static int opieauto_connect FUNCTION_NOARGS
+{
+  int s;
+  struct sockaddr_un sun;
+  char buffer[1024];
+  char *c, *c2 ="/.opieauto";
+  uid_t myuid = getuid(), myeuid = geteuid();
+
+  if (!myuid || !myeuid || (myuid != myeuid)) {
+#if DEBUG
+    syslog(LOG_DEBUG, "opieauto_connect: superuser and/or setuid not allowed");
+#endif /* DEBUG */
+    return -1;
+  };
+
+  memset(&sun, 0, sizeof(struct sockaddr_un));
+  sun.sun_family = AF_UNIX;
+
+  if (!(c = getenv("HOME"))) {
+#if DEBUG
+    syslog(LOG_DEBUG, "opieauto_connect: no HOME variable?");
+#endif /* DEBUG */
+    return -1;
+  };
+
+  if (strlen(c) > (sizeof(sun.sun_path) - strlen(c2) - 1)) {
+#if DEBUG
+    syslog(LOG_DEBUG, "opieauto_connect: HOME is too long: %s", c);
+#endif /* DEBUG */
+    return -1;
+  };
+
+  strcpy(sun.sun_path, c);
+  strcat(sun.sun_path, c2);
+
+  if ((s = socket(PF_UNIX, SOCK_STREAM, 0)) < 0) {
+#if DEBUG
+    syslog(LOG_DEBUG, "opieauto_connect: socket: %s(%d)", strerror(errno), errno);
+#endif /* DEBUG */
+    return -1;
+  };
+
+  {
+    struct stat st;
+
+    if (stat(sun.sun_path, &st) < 0) {
+#if DEBUG
+      syslog(LOG_DEBUG, "opieauto_connect: stat: %s(%d)\n", strerror(errno), errno);
+#endif /* DEBUG */
+      goto ret;
+    };
+
+    if (connect(s, (struct sockaddr *)&sun, sizeof(struct sockaddr_un))) {
+#if DEBUG
+      syslog(LOG_DEBUG, "opieauto_connect: connect: %s(%d)\n", strerror(errno), errno);
+#endif /* DEBUG */
+      goto ret;
+    };
+
+    if ((st.st_uid != myuid) || (!S_ISSOCK(st.st_mode)) || ((st.st_mode & 07777) != 0600)) {
+#if DEBUG
+      syslog(LOG_DEBUG, "opieauto_connect: something's fishy about the socket\n");
+#endif /* DEBUG */
+      goto ret;
+    };
+  };
+
+  return s;
+
+ret:
+  close(s);
+  return -1;
+};
+#endif /* OPIEAUTO */
+
+int opiegenerator FUNCTION((challenge, secret, response), char *challenge AND char *secret AND char *response)
 {
   int algorithm;
   int sequence;
   char *seed;
-  char key[8];
+  struct opie_otpkey key;
   int i;
   int exts;
+#if OPIEAUTO
+  int s;
+  int window;
+  char cmd[1+1+1+1+4+1+OPIE_SEED_MAX+1+4+1+4+1+4+1+4+1];
+  char *c;
+#endif /* OPIEAUTO */
 
-  if (!(buffer = strstr(buffer, "otp-")))
+  if (!(challenge = strstr(challenge, "otp-")))
     return 1;
 
-  buffer += 4;
+  challenge += 4;
 
-  if (__opieparsechallenge(buffer, &algorithm, &sequence, &seed, &exts))
+  if (__opieparsechallenge(challenge, &algorithm, &sequence, &seed, &exts))
     return 1;
 
   if ((sequence < 2) || (sequence > 9999))
     return 1;
 
-  if (!secret[0])
-   return 2;
+  if (*secret) {
+    if (opiepasscheck(secret))
+      return -2;
 
-  if (opiepasscheck(secret))
-    return -2;
+    if (i = opiekeycrunch(algorithm, &key, seed, secret))
+      return i;
+
+    if (sequence <= OPIE_SEQUENCE_RESTRICT) {
+      if (!(exts & 1))
+	return 1;
+
+      {
+	char newseed[OPIE_SEED_MAX + 1];
+	struct opie_otpkey newkey;
+	char *c;
+	char buf[OPIE_SEED_MAX + 48 + 1];
+
+	while (sequence-- != 0)
+	  opiehash(&key, algorithm);
+
+	if (opienewseed(strcpy(newseed, seed)) < 0)
+	  return -1;
+
+	if (opiekeycrunch(algorithm, &newkey, newseed, secret))
+	  return -1;
 
-  if (i = opiekeycrunch(algorithm, key, seed, secret))
-    return i;
+	for (i = 0; i < 499; i++)
+	  opiehash(&newkey, algorithm);
 
-  if (sequence < 10) {
-    if (!(exts & 1))
-      return 1;
+	strcpy(response, "init-hex:");
+	strcat(response, opiebtoh(buf, &key));
+	if (snprintf(buf, sizeof(buf), ":%s 499 %s:", algids[algorithm],
+	    newseed) >= sizeof(buf)) {
+#ifdef DEBUG
+	  syslog(LOG_DEBUG, "opiegenerator: snprintf truncation at init-hex");
+#endif /* DEBUG */
+	  return -1;
+	}
+	strcat(response, buf);
+	strcat(response, opiebtoh(buf, &newkey));
+      };
+    };
+  };
+
+#if OPIEAUTO
+  if ((s = opieauto_connect()) >= 0) {
+    if ((i = read(s, cmd, sizeof(cmd)-1)) < 0) {
+#if DEBUG
+      syslog(LOG_DEBUG, "opiegenerator: read: %s(%d)\n", strerror(errno), errno);
+#endif /* DEBUG */
+      close(s);
+      s = -1;
+      goto l0;
+    };
+    cmd[i] = 0;
+    if ((cmd[0] != 'C') || (cmd[1] != '+') || (cmd[2] != ' ')) {
+#if DEBUG
+      syslog(LOG_DEBUG, "opiegenerator: got invalid/failing C+ response: %s\n", cmd);
+#endif /* DEBUG */
+      close(s);
+      s = -1;
+      goto l0;
+    };
+
+    window = strtoul(&cmd[3], &c, 10);
+    if (!window || (window >= (OPIE_SEQUENCE_MAX - OPIE_SEQUENCE_RESTRICT)) || !isspace(*c)) {
+#if DEBUG
+      syslog(LOG_DEBUG, "opiegenerator: got bogus option response: %s\n", cmd);
+#endif /* DEBUG */
+      close(s);
+      s = -1;
+      goto l0;
+    };
+  };
+
+l0:
+  if (*secret) {
+    int j;
+
+    if (s < 0) {
+      j = 0;
+      goto l1;
+    };
+
+    j = max(sequence - window + 1, OPIE_SEQUENCE_RESTRICT);
+
+    for (i = j; i > 0; i--)
+      opiehash(&key, algorithm);
 
     {
-    char newseed[OPIE_SEED_MAX + 1];
-    char newkey[8];
-    char *c;
-    char buf[OPIE_SEED_MAX + 48 + 1];
+      char buf[16+1];
 
-    while (sequence-- != 0)
-      opiehash(key, algorithm);
+      opiebtoa8(buf, &key);
 
-    if (opienewseed(strcpy(newseed, seed)) < 0)
-      return -1;
+      if (snprintf(cmd, sizeof(cmd), "S= %d %d %s %s\n", algorithm, sequence,
+          seed, buf) >= sizeof(cmd)) {
+#if DEBUG
+        syslog(LOG_DEBUG, "opiegenerator: snprintf truncation at S=\n");
+#endif /* DEBUG */
+	goto l1;
+      }
+    }
 
-    if (opiekeycrunch(algorithm, newkey, newseed, secret))
-      return -1;
+    if (write(s, cmd, i = strlen(cmd)) != i) {
+#if DEBUG
+      syslog(LOG_DEBUG, "opiegenerator: write: %s(%d)\n", strerror(errno), errno);
+#endif /* DEBUG */
+      goto l1;
+    };
 
-    for (i = 0; i < 499; i++)
-      opiehash(newkey, algorithm);
+    if ((i = read(s, cmd, sizeof(cmd))) < 0) {
+#if DEBUG
+      syslog(LOG_DEBUG, "opiegenerator: read: %s(%d)\n", strerror(errno), errno);
+#endif /* DEBUG */
+    };
+    close(s);
 
-    strcpy(response, "init-hex:");
-    strcat(response, opiebtoh(buf, key));
-    sprintf(buf, ":%s 499 %s:", algids[algorithm], newseed);
-    strcat(response, buf);
-    strcat(response, opiebtoh(buf, newkey));
+    cmd[i] = 0;
+    i = strlen(seed);
+    if ((cmd[0] != 'S') || (cmd[1] != '+') || (cmd[2] != ' ') || (strtoul(&cmd[3], &c, 10) != algorithm) || (strtoul(c + 1, &c, 10) != sequence) || strncmp(++c, seed, i) || (*(c + i) != '\n')) {
+#if DEBUG
+      syslog(LOG_DEBUG, "opiegenerator: got invalid/failing S+ response: %s\n", cmd);
+#endif /* DEBUG */
     };
+
+l1:
+    for (i = sequence - j; i > 0; i--)
+      opiehash(&key, algorithm);
+
+    opiebtoh(response, &key);
   } else {
+    if (s < 0)
+      goto l2;
+
+    if ((snprintf(cmd, sizeof(cmd), "s= %d %d %s\n", algorithm, sequence,
+        seed) >= sizeof(cmd))) {
+#if DEBUG
+      syslog(LOG_DEBUG, "opiegenerator: snprintf truncation at s=\n");
+#endif /* DEBUG */
+      goto l2;
+    }
+
+    if (write(s, cmd, i = strlen(cmd)) != i) {
+#if DEBUG
+      syslog(LOG_DEBUG, "opiegenerator: write: %s(%d)\n", strerror(errno), errno);
+#endif /* DEBUG */
+      goto l2;
+    };
+
+    if ((i = read(s, cmd, sizeof(cmd))) < 0) {
+#if DEBUG
+      syslog(LOG_DEBUG, "opiegenerator: read: %s(%d)\n", strerror(errno), errno);
+#endif /* DEBUG */
+      goto l2;
+    };
+    close(s);
+
+    i = strlen(seed);
+
+    if ((cmd[0] != 's') || (cmd[2] != ' ') || (strtoul(&cmd[3], &c, 10) != algorithm) || (strtoul(c + 1, &c, 10) != sequence) || strncmp(++c, seed, i)) {
+#if DEBUG
+      if (c)
+	*c = 0;
+      else
+	cmd[3] = 0;
+      
+      syslog(LOG_DEBUG, "opiegenerator: got bogus/invalid s response: %s\n", cmd);
+#endif /* DEBUG */
+      goto l2;
+    };
+
+    c += i;
+
+    if (cmd[1] == '-') {
+#if DEBUG
+      if (*c != '\n') {
+	*c = 0;
+	syslog(LOG_DEBUG, "opiegenerator: got invalid s- response: %s\n", cmd);
+      };
+#endif /* DEBUG */
+      goto l2;
+    };
+
+    if (cmd[1] != '+') {
+#if DEBUG
+      *c = 0;
+      syslog(LOG_DEBUG, "opiegenerator: got invalid s response: %s\n", cmd);
+#endif /* DEBUG */
+      goto l2;
+    };
+
+    {
+      char *c2;
+
+      if (!(c2 = strchr(++c, '\n'))) {
+#if DEBUG
+	*c = 0;
+	syslog(LOG_DEBUG, "opiegenerator: got invalid s+ response: %s\n", cmd);
+#endif /* DEBUG */
+	goto l2;
+      };
+
+      *c2++ = 0;
+    };
+
+    if (!opieatob8(&key, c))
+      goto l2;
+
+    opiebtoh(response, &key);
+  };
+
+  if (s >= 0)
+    close(s);
+#else /* OPIEAUTO */
+  if (*secret) {
     while (sequence-- != 0)
-      opiehash(key, algorithm);
+      opiehash(&key, algorithm);
 
-    opiebtoh(response, key);
-  }
+    opiebtoh(response, &key);
+  } else
+    return -2;
+#endif /* OPIEAUTO */
 
   return 0;
-}
+
+#if OPIEAUTO
+l2:
+#if DEBUG
+  syslog(LOG_DEBUG, "opiegenerator: no opieauto response available.\n");
+#endif /* DEBUG */
+  if (s >= 0)
+    close(s);
+
+  return -2;
+#endif /* OPIEAUTO */
+};
diff --git a/contrib/opie/libopie/getsequence.c b/contrib/opie/libopie/getsequence.c
index e6c96c5..77fd5a2 100644
--- a/contrib/opie/libopie/getsequence.c
+++ b/contrib/opie/libopie/getsequence.c
@@ -1,7 +1,7 @@
 /* getsequence.c: The opiegetsequence() library function.
 
 %%% portions-copyright-cmetz-96
-Portions of this software are Copyright 1996-1998 by Craig Metz, All Rights
+Portions of this software are Copyright 1996-1999 by Craig Metz, All Rights
 Reserved. The Inner Net License Version 2 applies to these portions of
 the software.
 You should have received a copy of the license with this software. If
diff --git a/contrib/opie/libopie/getutmpentry.c b/contrib/opie/libopie/getutmpentry.c
index 531820e..f3afe0c 100644
--- a/contrib/opie/libopie/getutmpentry.c
+++ b/contrib/opie/libopie/getutmpentry.c
@@ -1,8 +1,8 @@
 /* getutmpentry.c: The __opiegetutmpentry() library function.
 
 %%% copyright-cmetz-96
-This software is Copyright 1996-1998 by Craig Metz, All Rights Reserved.
-The Inner Net License Version 2 applies to this software.
+This software is Copyright 1996-2001 by Craig Metz, All Rights Reserved.
+The Inner Net License Version 3 applies to this software.
 You should have received a copy of the license with this software. If
 you didn't get a copy, you may request one from <license@inner.net>.
 
diff --git a/contrib/opie/libopie/hash.c b/contrib/opie/libopie/hash.c
index ef80a79..e89508c 100644
--- a/contrib/opie/libopie/hash.c
+++ b/contrib/opie/libopie/hash.c
@@ -1,14 +1,15 @@
 /* hash.c: The opiehash() library function.
 
 %%% copyright-cmetz-96
-This software is Copyright 1996-1998 by Craig Metz, All Rights Reserved.
-The Inner Net License Version 2 applies to this software.
+This software is Copyright 1996-2001 by Craig Metz, All Rights Reserved.
+The Inner Net License Version 3 applies to this software.
 You should have received a copy of the license with this software. If
 you didn't get a copy, you may request one from <license@inner.net>.
 
         History:
 
-	Updated by cmetz for OPIE 2.31. Added SHA support (which may
+	Modified by cmetz for OPIE 2.4. Use struct opie_otpkey for binary arg. 
+	Modified by cmetz for OPIE 2.31. Added SHA support (which may
               not be correct). Backed out previous optimizations as
               they killed thread-safety.
         Created by cmetz for OPIE 2.3 using the old hash.c as a guide.
@@ -20,20 +21,21 @@ you didn't get a copy, you may request one from <license@inner.net>.
 #endif /* 0 */
 #include "opie.h"
 
-VOIDRET opiehash FUNCTION((x, algorithm), VOIDPTR x AND unsigned algorithm)
+VOIDRET opiehash FUNCTION((x, algorithm), struct opie_otpkey *results AND
+unsigned algorithm)
 {
-  UINT4 *results = (UINT4 *)x;
-
   switch(algorithm) {
 #if 0
     case 3:
       {
       SHA_CTX sha;
+
       SHAInit(&sha);
-      SHAUpdate(&sha, (unsigned char *)x, 8);
+      SHAUpdate(&sha, (unsigned char *)results, 8);
       SHAFinal(&sha);
-      results[0] = sha.buffer[0] ^ sha.buffer[2] ^ sha.buffer[4];
-      results[1] = sha.buffer[1] ^ sha.buffer[3];
+
+      results->words[0] = sha.buffer[0] ^ sha.buffer[2] ^ sha.buffer[4];
+      results->words[1] = sha.buffer[1] ^ sha.buffer[3];
       };
       break;
 #endif /* 0 */
@@ -43,10 +45,11 @@ VOIDRET opiehash FUNCTION((x, algorithm), VOIDPTR x AND unsigned algorithm)
       UINT4 mdx_tmp[4];
 
       opiemd4init(&mdx);
-      opiemd4update(&mdx, (unsigned char *)x, 8);
+      opiemd4update(&mdx, (unsigned char *)results, 8);
       opiemd4final((unsigned char *)mdx_tmp, &mdx);
-      results[0] = mdx_tmp[0] ^ mdx_tmp[2];
-      results[1] = mdx_tmp[1] ^ mdx_tmp[3];
+
+      results->words[0] = mdx_tmp[0] ^ mdx_tmp[2];
+      results->words[1] = mdx_tmp[1] ^ mdx_tmp[3];
       };
       break;
     case 5:
@@ -55,10 +58,11 @@ VOIDRET opiehash FUNCTION((x, algorithm), VOIDPTR x AND unsigned algorithm)
       UINT4 mdx_tmp[4];
 
       opiemd5init(&mdx);
-      opiemd5update(&mdx, (unsigned char *)x, 8);
+      opiemd5update(&mdx, (unsigned char *)results, 8);
       opiemd5final((unsigned char *)mdx_tmp, &mdx);
-      results[0] = mdx_tmp[0] ^ mdx_tmp[2];
-      results[1] = mdx_tmp[1] ^ mdx_tmp[3];
+
+      results->words[0] = mdx_tmp[0] ^ mdx_tmp[2];
+      results->words[1] = mdx_tmp[1] ^ mdx_tmp[3];
       };
       break;
   }
diff --git a/contrib/opie/libopie/hashlen.c b/contrib/opie/libopie/hashlen.c
index 1284a7b..09390c3 100644
--- a/contrib/opie/libopie/hashlen.c
+++ b/contrib/opie/libopie/hashlen.c
@@ -1,51 +1,63 @@
 /* hashlen.c: The opiehashlen() library function.
 
 %%% copyright-cmetz-96
-This software is Copyright 1996-1998 by Craig Metz, All Rights Reserved.
-The Inner Net License Version 2 applies to this software.
+This software is Copyright 1996-2001 by Craig Metz, All Rights Reserved.
+The Inner Net License Version 3 applies to this software.
 You should have received a copy of the license with this software. If
 you didn't get a copy, you may request one from <license@inner.net>.
 
         History:
 
+	Modified by cmetz for OPIE 2.4. Use struct opie_otpkey, isolate variables.
 	Created by cmetz for OPIE 2.3.
 */
 
 #include "opie_cfg.h"
 #include "opie.h"
 
-VOIDRET opiehashlen FUNCTION((algorithm, in, out, n), int algorithm AND VOIDPTR in AND VOIDPTR out AND int n)
+VOIDRET opiehashlen FUNCTION((algorithm, in, out, n), int algorithm AND
+VOIDPTR in AND struct opie_otpkey *results AND int n)
 {
-  UINT4 *results = (UINT4 *)out;
-  struct opiemdx_ctx mdx;
-  UINT4 mdx_tmp[4];
-#if 0
-  SHA_INFO sha;
-#endif /* 0 */
-
   switch(algorithm) {
 #if 0
     case 3:
+      {
+      SHA_INFO sha;
+
       sha_init(&sha);
       sha_update(&sha, (BYTE *)in, n);
       sha_final(&sha);
-      results[0] = sha.digest[0] ^ sha.digest[2] ^ sha.digest[4];
-      results[1] = sha.digest[1] ^ sha.digest[3] ^ sha.digest[5];
+
+      results->words[0] = sha.digest[0] ^ sha.digest[2] ^ sha.digest[4];
+      results->words[1] = sha.digest[1] ^ sha.digest[3] ^ sha.digest[5];
+      };
       break;
 #endif /* 0 */
     case 4:
+      {
+      struct opiemdx_ctx mdx;
+      UINT4 mdx_tmp[4];
+
       opiemd4init(&mdx);
       opiemd4update(&mdx, (unsigned char *)in, n);
       opiemd4final((unsigned char *)mdx_tmp, &mdx);
-      results[0] = mdx_tmp[0] ^ mdx_tmp[2];
-      results[1] = mdx_tmp[1] ^ mdx_tmp[3];
+
+      results->words[0] = mdx_tmp[0] ^ mdx_tmp[2];
+      results->words[1] = mdx_tmp[1] ^ mdx_tmp[3];
+      }
       break;
     case 5:
+      {
+      struct opiemdx_ctx mdx;
+      UINT4 mdx_tmp[4];
+
       opiemd5init(&mdx);
       opiemd5update(&mdx, (unsigned char *)in, n);
       opiemd5final((unsigned char *)mdx_tmp, &mdx);
-      results[0] = mdx_tmp[0] ^ mdx_tmp[2];
-      results[1] = mdx_tmp[1] ^ mdx_tmp[3];
+
+      results->words[0] = mdx_tmp[0] ^ mdx_tmp[2];
+      results->words[1] = mdx_tmp[1] ^ mdx_tmp[3];
+      }
       break;
   }
 }
diff --git a/contrib/opie/libopie/insecure.c b/contrib/opie/libopie/insecure.c
index a7fda7b..383206f 100644
--- a/contrib/opie/libopie/insecure.c
+++ b/contrib/opie/libopie/insecure.c
@@ -1,7 +1,7 @@
 /* insecure.c: The opieinsecure() library function.
 
 %%% portions-copyright-cmetz-96
-Portions of this software are Copyright 1996-1998 by Craig Metz, All Rights
+Portions of this software are Copyright 1996-1999 by Craig Metz, All Rights
 Reserved. The Inner Net License Version 2 applies to these portions of
 the software.
 You should have received a copy of the license with this software. If
@@ -14,6 +14,8 @@ License Agreement applies to this software.
 
         History:
 
+	Modified by cmetz for OPIE 2.4. Do utmp checks on utmpx systems.
+	     Handle unterminated ut_host.
 	Modified by cmetz for OPIE 2.31. Fixed a logic bug. Call endut[x]ent().
 	Modified by cmetz for OPIE 2.3. Added result caching. Use
 	     __opiegetutmpentry(). Ifdef around ut_host check. Eliminate
@@ -56,9 +58,9 @@ int opieinsecure FUNCTION_NOARGS
   char *s;
   char *term_name;
   int  insecure = 0;
-#if HAVE_UT_HOST
+#if HAVE_UT_HOST || DOUTMPX
   struct utmp utmp;
-#endif /* HAVE_UT_HOST */
+#endif /* HAVE_UT_HOST || DOUTMPX */
   static int result = -1;
 
   if (result != -1)
@@ -117,30 +119,34 @@ int opieinsecure FUNCTION_NOARGS
         return (result = 1);
   };
 
-#if HAVE_UT_HOST
+#if HAVE_UT_HOST || DOUTMPX
   if (isatty(0)) {
     memset(&utmp, 0, sizeof(struct utmp));
     {
       int i = __opiegetutmpentry(ttyname(0), &utmp);
       endutent();
       if (!i && utmp.ut_host[0]) {
+	char host[sizeof(utmp.ut_host) + 1];
 	insecure = 1;
 
-	if (s = strchr(utmp.ut_host, ':')) {
-	  int n = s - utmp.ut_host;
+	strncpy(host, utmp.ut_host, sizeof(utmp.ut_host));
+	host[sizeof(utmp.ut_host)] = 0;
+
+	if (s = strchr(host, ':')) {
+	  int n = s - host;
 	  if (!n)
 	    insecure = 0;
 	  else
 	    if (display_name) {
-	      if (!strncmp(utmp.ut_host, display_name, n))
+	      if (!strncmp(host, display_name, n))
 		insecure = 0;
-#ifdef SOLARIS
+#if 1 /* def SOLARIS */
 	      else
-		if (s = strchr(utmp.ut_host, ' ')) {
+		if (s = strchr(host, ' ')) {
 		  *s = ':';
 		  if (s = strchr(s + 1, ' '))
 		    *s = '.';
-		  if (!strncmp(utmp.ut_host, display_name, n))
+		  if (!strncmp(host, display_name, n))
 		    insecure = 0; 
 		}
 #endif /* SOLARIS */
@@ -149,7 +155,7 @@ int opieinsecure FUNCTION_NOARGS
       }
     };
   };
-#endif /* HAVE_UT_HOST */
+#endif /* HAVE_UT_HOST || DOUTMPX */
   if (insecure)
     return (result = 1);
 
diff --git a/contrib/opie/libopie/keycrunch.c b/contrib/opie/libopie/keycrunch.c
index 94a1a53..2ca57e0 100644
--- a/contrib/opie/libopie/keycrunch.c
+++ b/contrib/opie/libopie/keycrunch.c
@@ -1,13 +1,14 @@
 /* keycrunch.c: The opiekeycrunch() library function.
 
 %%% copyright-cmetz-96
-This software is Copyright 1996-1998 by Craig Metz, All Rights Reserved.
-The Inner Net License Version 2 applies to this software.
+This software is Copyright 1996-2001 by Craig Metz, All Rights Reserved.
+The Inner Net License Version 3 applies to this software.
 You should have received a copy of the license with this software. If
 you didn't get a copy, you may request one from <license@inner.net>.
 
 	History:
 
+	Modified by cmetz for OPIE 2.4. Use struct opie_otpkey for arg.
 	Created by cmetz for OPIE 2.3 using the old keycrunch.c as a guide.
 */
 
@@ -23,7 +24,8 @@ you didn't get a copy, you may request one from <license@inner.net>.
 
 #include "opie.h"
 
-int opiekeycrunch FUNCTION((algorithm, result, seed, secret), int algorithm AND char *result AND char *seed AND char *secret)
+int opiekeycrunch FUNCTION((algorithm, result, seed, secret), int algorithm AND
+struct opie_otpkey *result AND char *seed AND char *secret)
 {
   int i, rval = -1;
   char *c;
diff --git a/contrib/opie/libopie/lock.c b/contrib/opie/libopie/lock.c
index fc449d4..bd92607 100644
--- a/contrib/opie/libopie/lock.c
+++ b/contrib/opie/libopie/lock.c
@@ -1,7 +1,7 @@
 /* lock.c: The opielock() library function.
 
 %%% portions-copyright-cmetz-96
-Portions of this software are Copyright 1996-1998 by Craig Metz, All Rights
+Portions of this software are Copyright 1996-1999 by Craig Metz, All Rights
 Reserved. The Inner Net License Version 2 applies to these portions of
 the software.
 You should have received a copy of the license with this software. If
@@ -14,6 +14,7 @@ License Agreement applies to this software.
 
         History:
 
+	Modified by cmetz for OPIE 2.4. Use snprintf.
 	Modified by cmetz for OPIE 2.31. Put locks in a separate dir.
             Bug fixes.
 	Modified by cmetz for OPIE 2.3. Do refcounts whether or not we
@@ -194,7 +195,9 @@ int opielock FUNCTION((principal), char *principal)
   if (!S_ISREG(statbuf[0].st_mode) || (statbuf[0].st_mode != statbuf[1].st_mode) || (statbuf[0].st_ino != statbuf[1].st_ino))
     goto lockret;
 
-  sprintf(buffer, "%d\n%d\n", getpid(), time(0));
+  if (snprintf(buffer, sizeof(buffer), "%d\n%d\n", getpid(), time(0)) >= sizeof(buffer))
+    goto lockret;
+
   i = strlen(buffer) + 1;
   if (lseek(fh, 0, SEEK_SET)) { 
     close(fh);
diff --git a/contrib/opie/libopie/login.c b/contrib/opie/libopie/login.c
index ca39143..6c6ca79 100644
--- a/contrib/opie/libopie/login.c
+++ b/contrib/opie/libopie/login.c
@@ -1,13 +1,15 @@
 /* login.c: The opielogin() library function.
 
 %%% copyright-cmetz-96
-This software is Copyright 1996-1998 by Craig Metz, All Rights Reserved.
-The Inner Net License Version 2 applies to this software.
+This software is Copyright 1996-2001 by Craig Metz, All Rights Reserved.
+The Inner Net License Version 3 applies to this software.
 You should have received a copy of the license with this software. If
 you didn't get a copy, you may request one from <license@inner.net>.
 
         History:
 
+	Modified by cmetz for OPIE 2.4. Add support for ut_id and
+		ut_syslen. Don't zero-terminate ut_name and ut_host.
 	Modified by cmetz for OPIE 2.31. If the OS won't tell us where
 		_PATH_WTMP[X] is, try playing the SVID game, then use
 		Autoconf-discovered values. Fixed gettimeofday() call
@@ -38,12 +40,15 @@ you didn't get a copy, you may request one from <license@inner.net>.
 #endif /* DEBUG */
 #include "opie.h"
 
+#define IDLEN 4
+
 int opielogin FUNCTION((line, name, host), char *line AND char *name AND char *host)
 {
-  struct utmp u;
   int rval = 0;
-
 #if !DISABLE_UTMP
+  struct utmp u;
+  char id[IDLEN + 1] = "";
+
   if (__opiegetutmpentry(line, &u)) {
 #if DEBUG
     syslog(LOG_DEBUG, "opielogin: __opiegetutmpentry(line=%s, &u) failed", line);
@@ -58,6 +63,11 @@ int opielogin FUNCTION((line, name, host), char *line AND char *name AND char *h
 #endif /* DEBUG */
   }
 
+#if DOUTMPX || HAVE_UT_ID
+  strncpy(id, u.ut_id, sizeof(u.ut_id));
+  id[sizeof(id)-1] = 0;
+#endif /* DOUTMPX || HAVE_UT_ID */
+
 #if HAVE_UT_TYPE && defined(USER_PROCESS)
   u.ut_type = USER_PROCESS;
 #endif /* HAVE_UT_TYPE && defined(USER_PROCESS) */
@@ -67,15 +77,16 @@ int opielogin FUNCTION((line, name, host), char *line AND char *name AND char *h
 
 #if HAVE_UT_NAME
   strncpy(u.ut_name, name, sizeof(u.ut_name));
-  u.ut_name[sizeof(u.ut_name)-1] = 0;
 #else /* HAVE_UT_NAME */
 #error No ut_name field in struct utmp? (Please send in a bug report)
 #endif /* HAVE_UT_NAME */
 
 #if HAVE_UT_HOST
   strncpy(u.ut_host, host, sizeof(u.ut_host));
-  u.ut_host[sizeof(u.ut_host)-1] = 0;
 #endif /* HAVE_UT_HOST */
+#if DOUTMPX && HAVE_UTX_SYSLEN
+  u.ut_syslen = strlen(host) + 1;
+#endif /* DOUTMPX && HAVE_UT_SYSLEN */
 
 #if DOUTMPX
 #ifdef HAVE_ONE_ARG_GETTIMEOFDAY
@@ -96,7 +107,7 @@ int opielogin FUNCTION((line, name, host), char *line AND char *name AND char *h
 #endif /* !DISABLE_UTMP */
 
 dowtmp:
-  opielogwtmp(line, name, host);
+  opielogwtmp(line, name, host, id);
   opielogwtmp(NULL, NULL, NULL);
 
 dosetlogin:
diff --git a/contrib/opie/libopie/logwtmp.c b/contrib/opie/libopie/logwtmp.c
index a42fdec..873ca9b 100644
--- a/contrib/opie/libopie/logwtmp.c
+++ b/contrib/opie/libopie/logwtmp.c
@@ -1,7 +1,7 @@
 /* logwtmp.c: Put an entry in the wtmp file.
 
 %%% portions-copyright-cmetz-96
-Portions of this software are Copyright 1996-1998 by Craig Metz, All Rights
+Portions of this software are Copyright 1996-1999 by Craig Metz, All Rights
 Reserved. The Inner Net License Version 2 applies to these portions of
 the software.
 You should have received a copy of the license with this software. If
@@ -14,6 +14,8 @@ License Agreement applies to this software.
 
 	History:
 
+	Modified by cmetz for OPIE 2.4. Set process to dead if name is null.
+		Added support for ut_id and ut_syslen.
 	Modified by cmetz for OPIE 2.32. Don't leave line=NULL, skip
 		past /dev/ in line. Fill in ut_host on systems with UTMPX and
 		ut_host.
@@ -110,7 +112,7 @@ static int fdx = -1;
  * after first call, for use with ftp (which may chroot
  * after login, but before logout).
  */
-VOIDRET opielogwtmp FUNCTION((line, name, host), char *line AND char *name AND char *host)
+VOIDRET opielogwtmp FUNCTION((line, name, host), char *line AND char *name AND char *host AND char *id)
 {
 #if !DISABLE_WTMP
   struct utmp ut;
@@ -136,8 +138,15 @@ VOIDRET opielogwtmp FUNCTION((line, name, host), char *line AND char *name AND c
     return;
   if (fstat(fd, &buf) == 0) {
 #if HAVE_UT_TYPE && defined(USER_PROCESS)
-    ut.ut_type = USER_PROCESS;
+    if (name && *name)
+      ut.ut_type = USER_PROCESS;
+    else
+      ut.ut_type = DEAD_PROCESS;
 #endif /* HAVE_UT_TYPE && defined(USER_PROCESS) */
+#if HAVE_UT_ID
+    if (id)
+      strncpy(ut.ut_id, id, sizeof(ut.ut_id));
+#endif /* HAVE_UT_ID */
 #if HAVE_UT_PID
     ut.ut_pid = getpid();
 #endif /* HAVE_UT_PID */
@@ -161,6 +170,18 @@ VOIDRET opielogwtmp FUNCTION((line, name, host), char *line AND char *name AND c
     strncpy(utx.ut_line, line, sizeof(utx.ut_line));
     strncpy(utx.ut_name, name, sizeof(utx.ut_name));
     strncpy(utx.ut_host, host, sizeof(utx.ut_host));
+#ifdef USER_PROCESS
+    if (name && *name)
+      utx.ut_type = USER_PROCESS;
+    else
+      utx.ut_type = DEAD_PROCESS;
+#endif /* USER_PROCESS */
+    if (id)
+      strncpy(utx.ut_id, id, sizeof(utx.ut_id));
+    utx.ut_pid = getpid();
+#if HAVE_UTX_SYSLEN
+    utx.ut_syslen = strlen(utx.ut_host) + 1;
+#endif /* HAVE_UTX_SYSLEN */
 #if HAVE_GETTIMEOFDAY
 #if HAVE_ONE_ARG_GETTIMEOFDAY
     gettimeofday(&utx.ut_tv);
diff --git a/contrib/opie/libopie/lookup.c b/contrib/opie/libopie/lookup.c
index d05e1fa..3003da7 100644
--- a/contrib/opie/libopie/lookup.c
+++ b/contrib/opie/libopie/lookup.c
@@ -1,8 +1,8 @@
 /* lookup.c: The opielookup() library function.
 
 %%% copyright-cmetz-96
-This software is Copyright 1996-1998 by Craig Metz, All Rights Reserved.
-The Inner Net License Version 2 applies to this software.
+This software is Copyright 1996-2001 by Craig Metz, All Rights Reserved.
+The Inner Net License Version 3 applies to this software.
 You should have received a copy of the license with this software. If
 you didn't get a copy, you may request one from <license@inner.net>.
 
diff --git a/contrib/opie/libopie/md4c.c b/contrib/opie/libopie/md4c.c
index acc8857..f6adc67 100644
--- a/contrib/opie/libopie/md4c.c
+++ b/contrib/opie/libopie/md4c.c
@@ -1,7 +1,7 @@
 /* md4c.c: "RSA Data Security, Inc. MD4 Message-Digest Algorithm"
 
 %%% portions-copyright-cmetz-96
-Portions of this software are Copyright 1996-1998 by Craig Metz, All Rights
+Portions of this software are Copyright 1996-1999 by Craig Metz, All Rights
 Reserved. The Inner Net License Version 2 applies to these portions of
 the software.
 You should have received a copy of the license with this software. If
diff --git a/contrib/opie/libopie/md5c.c b/contrib/opie/libopie/md5c.c
index 09611a5..cdd21e0 100644
--- a/contrib/opie/libopie/md5c.c
+++ b/contrib/opie/libopie/md5c.c
@@ -2,7 +2,7 @@
    "derived from the RSA Data Security, Inc. MD5 Message-Digest Algorithm"
 
 %%% portions-copyright-cmetz-96
-Portions of this software are Copyright 1996-1998 by Craig Metz, All Rights
+Portions of this software are Copyright 1996-1999 by Craig Metz, All Rights
 Reserved. The Inner Net License Version 2 applies to these portions of
 the software.
 You should have received a copy of the license with this software. If
diff --git a/contrib/opie/libopie/newseed.c b/contrib/opie/libopie/newseed.c
index b351798..0455857 100644
--- a/contrib/opie/libopie/newseed.c
+++ b/contrib/opie/libopie/newseed.c
@@ -1,13 +1,15 @@
 /* newseed.c: The opienewseed() library function.
 
 %%% copyright-cmetz-96
-This software is Copyright 1996-1998 by Craig Metz, All Rights Reserved.
-The Inner Net License Version 2 applies to this software.
+This software is Copyright 1996-2001 by Craig Metz, All Rights Reserved.
+The Inner Net License Version 3 applies to this software.
 You should have received a copy of the license with this software. If
 you didn't get a copy, you may request one from <license@inner.net>.
 
 	History:
 
+	Modified by cmetz for OPIE 2.4. Greatly simplified increment. Now does
+		not add digits. Reformatted the code.
 	Modified by cmetz for OPIE 2.32. Added syslog.h if DEBUG.
 	Modified by cmetz for OPIE 2.31. Added time.h.
 	Created by cmetz for OPIE 2.22.
@@ -35,73 +37,54 @@ you didn't get a copy, you may request one from <license@inner.net>.
 
 int opienewseed FUNCTION((seed), char *seed)
 {
-  if (!seed)
-    return -1;
-
-  if (seed[0]) {
-    int i;
-    
-    if ((i = strlen(seed)) >= OPIE_SEED_MIN) {
-      long j;
-      char *c;
-      
-      if (i > OPIE_SEED_MAX)
-	i = OPIE_SEED_MAX;
-
-      c = seed + i - 1;
-
-      while(c != seed) {
-	if (!isdigit(*c))
-	  break;
-	c--;
-      }
-
-      c++;
-
-      if (j = strtol(c, (char **)0, 10)) {
-	char buf[OPIE_SEED_MAX];
-
-	*c = 0;
-	strcpy(buf, seed);
-
-	if (errno == ERANGE) {
-	  j = 1;
-	} else {
-	  int k = 1, l = OPIE_SEED_MAX - strlen(buf);
-	  while(l--) k *= 10;
-
-	  if (++j >= k)
-	    j = 1;
+	if (!seed)
+		return -1;
+
+	if (seed[0]) {
+		char *c, *end;
+		unsigned int i, max;
+
+		if ((i = strlen(seed)) > OPIE_SEED_MAX)
+			i = OPIE_SEED_MAX;
+
+		for (c = end = seed + i - 1, max = 1;
+				(c > seed) && isdigit(*c); c--)
+			max *= 10;
+
+		if ((i = strtoul(++c, (char **)0, 10)) < max) {
+			if (++i >= max)
+				i = 1;
+
+			snprintf(c, end - c, "%d", i);
+			seed[OPIE_SEED_MAX] = 0;
+			return 0;
+		}
 	}
 
-	sprintf(seed, "%s%04d", buf, j);
-	return 0;
-      }
-    }
-  }
+	{
+		time_t now;
 
-  {
-    {
-    time_t now;
-    time(&now);
-    srand(now);
-    }
+		time(&now);
+		srand(now);
+	}
 
-    {
-    struct utsname utsname;
+	{
+		struct utsname utsname;
 
-    if (uname(&utsname) < 0) {
+		if (uname(&utsname) < 0) {
 #if DEBUG
-      syslog(LOG_DEBUG, "uname: %s(%d)", strerror(errno), errno);
+			syslog(LOG_DEBUG, "uname: %s(%d)", strerror(errno),
+				errno);
 #endif /* DEBUG */
-      utsname.nodename[0] = 'k';
-      utsname.nodename[1] = 'e';
-    }
-    utsname.nodename[2] = 0;
-
-    sprintf(seed, "%s%04d", utsname.nodename, (rand() % 9999) + 1);
-    return 0;
-    }
-  }
+			utsname.nodename[0] = 'k';
+			utsname.nodename[1] = 'e';
+		}
+		utsname.nodename[2] = 0;
+
+		if (snprintf(seed, OPIE_SEED_MAX+1, "%s%04d", utsname.nodename,
+				(rand() % 9999) + 1) >= OPIE_SEED_MAX+1)
+			return -1;
+		return 0;
+	}
 }
 
diff --git a/contrib/opie/libopie/open.c b/contrib/opie/libopie/open.c
index dac03a8..c0c76c2 100644
--- a/contrib/opie/libopie/open.c
+++ b/contrib/opie/libopie/open.c
@@ -1,13 +1,15 @@
 /* open.c: The __opieopen() library function.
 
 %%% copyright-cmetz-96
-This software is Copyright 1996-1998 by Craig Metz, All Rights Reserved.
-The Inner Net License Version 2 applies to this software.
+This software is Copyright 1996-2001 by Craig Metz, All Rights Reserved.
+The Inner Net License Version 3 applies to this software.
 You should have received a copy of the license with this software. If
 you didn't get a copy, you may request one from <license@inner.net>.
 
 	History:
 
+	Modified by cmetz for OPIE 2.4. More portable way to get the mode
+		string for fopen.
 	Created by cmetz for OPIE 2.3.
 */
 #include "opie_cfg.h"
@@ -51,9 +53,23 @@ FILE *__opieopen FUNCTION((file, rw, mode), char *file AND int rw AND int mode)
     return NULL;
 
   {
-    char *fmodes[] = { "r", "r+", "a" };
-
-    if (!(f = fopen(file, fmodes[rw])))
+    char *fmode;
+
+    switch(rw) {
+      case 0:
+	fmode = "r";
+	break;
+      case 1:
+	fmode = "r+";
+	break;
+      case 2:
+	fmode = "a";
+	break;
+      default:
+	return NULL;
+    };
+    
+    if (!(f = fopen(file, fmode)))
       return NULL;
   }
 
diff --git a/contrib/opie/libopie/parsechallenge.c b/contrib/opie/libopie/parsechallenge.c
index 2035c38..2b23a35 100644
--- a/contrib/opie/libopie/parsechallenge.c
+++ b/contrib/opie/libopie/parsechallenge.c
@@ -1,13 +1,15 @@
 /* parsechallenge.c: The __opieparsechallenge() library function.
 
 %%% copyright-cmetz-96
-This software is Copyright 1996-1998 by Craig Metz, All Rights Reserved.
-The Inner Net License Version 2 applies to this software.
+This software is Copyright 1996-2001 by Craig Metz, All Rights Reserved.
+The Inner Net License Version 3 applies to this software.
 You should have received a copy of the license with this software. If
 you didn't get a copy, you may request one from <license@inner.net>.
 
         History:
 
+	Modified by cmetz for OPIE 2.4. Use OPIE_SEQUENCE_MAX, check for
+	        sequence number of zero.
 	Modified by cmetz for OPIE 2.32. Check for extended response sets.
 		Change prefix to double underscore.
 	Created by cmetz for OPIE 2.3 using generator.c as a guide.
@@ -48,7 +50,7 @@ int __opieparsechallenge FUNCTION((buffer, algorithm, sequence, seed, exts), cha
     *algorithm = a->num;
   }
 
-  if ((*sequence = strtoul(++c, &c, 10)) > 9999)
+  if (((*sequence = strtoul(++c, &c, 10)) > OPIE_SEQUENCE_MAX) || !*sequence)
     return -1;
 
   while(*c && isspace(*c)) c++;
diff --git a/contrib/opie/libopie/passcheck.c b/contrib/opie/libopie/passcheck.c
index 8bfa87d..140b8fb 100644
--- a/contrib/opie/libopie/passcheck.c
+++ b/contrib/opie/libopie/passcheck.c
@@ -1,7 +1,7 @@
 /* passcheck.c: The opiepasscheck() library function.
 
 %%% portions-copyright-cmetz-96
-Portions of this software are Copyright 1996-1998 by Craig Metz, All Rights
+Portions of this software are Copyright 1996-1999 by Craig Metz, All Rights
 Reserved. The Inner Net License Version 2 applies to these portions of
 the software.
 You should have received a copy of the license with this software. If
diff --git a/contrib/opie/libopie/passwd.c b/contrib/opie/libopie/passwd.c
index 6bac249..1c3b1ab6 100644
--- a/contrib/opie/libopie/passwd.c
+++ b/contrib/opie/libopie/passwd.c
@@ -1,8 +1,8 @@
 /* passwd.c: The opiepasswd() library function.
 
 %%% copyright-cmetz-96
-This software is Copyright 1996-1998 by Craig Metz, All Rights Reserved.
-The Inner Net License Version 2 applies to this software.
+This software is Copyright 1996-2001 by Craig Metz, All Rights Reserved.
+The Inner Net License Version 3 applies to this software.
 You should have received a copy of the license with this software. If
 you didn't get a copy, you may request one from <license@inner.net>.
 
@@ -46,19 +46,19 @@ int opiepasswd FUNCTION((old, flags, principal, n, seed, ks), struct opie *old A
   opie.opie_seed = seed;
 
   if (ks) {
-    char key[8];
+    struct opie_otpkey key;
     
     if (flags & OPIEPASSWD_CONSOLE) {
-      if (opiekeycrunch(MDX, key, seed, ks))
+      if (opiekeycrunch(MDX, &key, seed, ks))
 	return -1;
       for (i = n; i; i--)
-	opiehash(key, MDX);
-      if (!(opie.opie_val = opiebtoa8(opie.opie_buf, key)))
+	opiehash(&key, MDX);
+      if (!(opie.opie_val = opiebtoa8(opie.opie_buf, &key)))
 	return -1;
     } else {
-      if ((opieetob(key, ks) != 1) && !opieatob8(key, ks))
+      if ((opieetob(&key, ks) != 1) && !opieatob8(&key, ks))
 	  return 1;
-      if (!(opie.opie_val = opiebtoa8(opie.opie_buf, key)))
+      if (!(opie.opie_val = opiebtoa8(opie.opie_buf, &key)))
 	return 1;
     }
   }
diff --git a/contrib/opie/libopie/randomchallenge.c b/contrib/opie/libopie/randomchallenge.c
index 99b4c48..7cf18bb 100644
--- a/contrib/opie/libopie/randomchallenge.c
+++ b/contrib/opie/libopie/randomchallenge.c
@@ -1,7 +1,7 @@
 /* randomchallenge.c: The opierandomchallenge() library function.
 
 %%% portions-copyright-cmetz-96
-Portions of this software are Copyright 1996-1998 by Craig Metz, All Rights
+Portions of this software are Copyright 1996-1999 by Craig Metz, All Rights
 Reserved. The Inner Net License Version 2 applies to these portions of
 the software.
 You should have received a copy of the license with this software. If
@@ -14,6 +14,7 @@ License Agreement applies to this software.
 
         History:
 
+	Modified by cmetz for OPIE 2.4. Use snprintf().
 	Modified by cmetz for OPIE 2.32. Initialize algids[] with 0s
 	     instead of NULL.
         Modified by cmetz for OPIE 2.3. Add sha support.
@@ -35,11 +36,12 @@ static char *algids[] = { 0, 0, 0, "sha1", "md4", "md5" };
    most situations; it is certainly better than a fixed string */
 VOIDRET opierandomchallenge FUNCTION((prompt), char *prompt)
 {
-  char buf[OPIE_SEED_MAX + 1];
+  char buf[OPIE_SEED_MAX+1];
 
   buf[0] = 0;
   if (opienewseed(buf))
     strcpy(buf, "ke4452");
 
-  sprintf(prompt, "otp-%s %d %s ext", algids[MDX], (rand() % 499) + 1, buf);
+  snprintf(prompt, OPIE_CHALLENGE_MAX+1, "otp-%s %d %s ext", algids[MDX],
+  	(rand() % 499) + 1, buf);
 }
diff --git a/contrib/opie/libopie/readpass.c b/contrib/opie/libopie/readpass.c
index 5808f02..bd24b02 100644
--- a/contrib/opie/libopie/readpass.c
+++ b/contrib/opie/libopie/readpass.c
@@ -1,7 +1,7 @@
 /* readpass.c: The opiereadpass() library function.
 
 %%% portions-copyright-cmetz-96
-Portions of this software are Copyright 1996-1998 by Craig Metz, All Rights
+Portions of this software are Copyright 1996-1999 by Craig Metz, All Rights
 Reserved. The Inner Net License Version 2 applies to these portions of
 the software.
 You should have received a copy of the license with this software. If
diff --git a/contrib/opie/libopie/readrec.c b/contrib/opie/libopie/readrec.c
index f6361eb..98ec658 100644
--- a/contrib/opie/libopie/readrec.c
+++ b/contrib/opie/libopie/readrec.c
@@ -1,13 +1,15 @@
 /* readrec.c: The __opiereadrec() library function.
 
 %%% copyright-cmetz-96
-This software is Copyright 1996-1998 by Craig Metz, All Rights Reserved.
-The Inner Net License Version 2 applies to this software.
+This software is Copyright 1996-2001 by Craig Metz, All Rights Reserved.
+The Inner Net License Version 3 applies to this software.
 You should have received a copy of the license with this software. If
 you didn't get a copy, you may request one from <license@inner.net>.
 
 	History:
 
+	Modified by cmetz for OPIE 2.4. Check that seed, sequence number, and
+		response values are valid.
 	Modified by cmetz for OPIE 2.31. Removed active attack protection
 		support. Fixed a debug message typo. Keep going after bogus
                 records. Set read flag.
@@ -57,7 +59,7 @@ static int parserec FUNCTION((opie), struct opie *opie)
 
   opie->opie_n = strtoul(c, &c3, 10);
 
-  if (*c3)
+  if (*c3 || (opie->opie_n <= 0) || (opie->opie_n > 9999))
     return -1;
   };
 
@@ -66,6 +68,10 @@ static int parserec FUNCTION((opie), struct opie *opie)
 
   *(c2++) = 0;
 
+  for (c = opie->opie_seed; *c; c++)
+    if (!isalnum(*c))
+      return -1;
+
   while(*c2 == ' ') c2++;
 
   if (!(c2 = strchr(opie->opie_val = c2, ' ')))
@@ -73,6 +79,13 @@ static int parserec FUNCTION((opie), struct opie *opie)
 
   *(c2++) = 0;
 
+  {
+  struct opie_otpkey otpkey;
+
+  if (!opieatob8(&otpkey, opie->opie_val))
+    return -1;
+  }
+
   return 0;
 }
 
diff --git a/contrib/opie/libopie/unlock.c b/contrib/opie/libopie/unlock.c
index 4c01a5c..0f607ab 100644
--- a/contrib/opie/libopie/unlock.c
+++ b/contrib/opie/libopie/unlock.c
@@ -1,7 +1,7 @@
 /* unlock.c: The opieunlock() library function.
 
 %%% portions-copyright-cmetz-96
-Portions of this software are Copyright 1996-1998 by Craig Metz, All Rights
+Portions of this software are Copyright 1996-1999 by Craig Metz, All Rights
 Reserved. The Inner Net License Version 2 applies to these portions of
 the software.
 You should have received a copy of the license with this software. If
diff --git a/contrib/opie/libopie/verify.c b/contrib/opie/libopie/verify.c
index 990e293..e6abec4 100644
--- a/contrib/opie/libopie/verify.c
+++ b/contrib/opie/libopie/verify.c
@@ -1,13 +1,15 @@
 /* verify.c: The opieverify() library function.
 
 %%% copyright-cmetz-96
-This software is Copyright 1996-1998 by Craig Metz, All Rights Reserved.
-The Inner Net License Version 2 applies to this software.
+This software is Copyright 1996-2001 by Craig Metz, All Rights Reserved.
+The Inner Net License Version 3 applies to this software.
 You should have received a copy of the license with this software. If
 you didn't get a copy, you may request one from <license@inner.net>.
 
 	History:
 
+	Modified by cmetz for OPIE 2.4. Use struct opie_otpkey for keys.
+		Check that seed and sequence number are valid.
 	Modified by cmetz for OPIE 2.32. Renamed _opieparsechallenge() to
 		__opieparsechallenge() and handle new argument. Fixed init
 		response parsing bug.
@@ -67,7 +69,7 @@ int opieverify FUNCTION((opie, response), struct opie *opie AND char *response)
 {
   int i, rval = -1;
   char *c;
-  char key[8], fkey[8], lastkey[8];
+  struct opie_otpkey key, fkey, lastkey;
   struct opie nopie;
 
   if (!opie || !response)
@@ -80,7 +82,14 @@ int opieverify FUNCTION((opie, response), struct opie *opie AND char *response)
     goto verret;
 #endif /* DEBUG */
 
-  if (!opieatob8(lastkey, opie->opie_val))
+  if (!opieatob8(&lastkey, opie->opie_val))
+    goto verret;
+
+  for (c = opie->opie_seed; *c; c++)
+    if (!isalnum(*c))
+      goto verret;
+
+  if (opie->opie_n <= 0)
     goto verret;
 
   if (c = strchr(response, ':')) {
@@ -97,33 +106,33 @@ int opieverify FUNCTION((opie, response), struct opie *opie AND char *response)
   case RESPONSE_STANDARD:
     i = 1;
     
-    if (opieetob(key, response) == 1) {
-      memcpy(fkey, key, sizeof(key));
-      opiehash(fkey, MDX);
-      i = memcmp(fkey, lastkey, sizeof(key));
+    if (opieetob(&key, response) == 1) {
+      memcpy(&fkey, &key, sizeof(struct opie_otpkey));
+      opiehash(&fkey, MDX);
+      i = memcmp(&fkey, &lastkey, sizeof(struct opie_otpkey));
     }
-    if (i && opieatob8(key, response)) {
-      memcpy(fkey, key, sizeof(key));
-      opiehash(fkey, MDX);
-      i = memcmp(fkey, lastkey, sizeof(key));
+    if (i && opieatob8(&key, response)) {
+      memcpy(&fkey, &key, sizeof(struct opie_otpkey));
+      opiehash(&fkey, MDX);
+      i = memcmp(&fkey, &lastkey, sizeof(struct opie_otpkey));
     }
     break;
   case RESPONSE_WORD:
     i = 1;
 
-    if (opieetob(key, c) == 1) {
-      memcpy(fkey, key, sizeof(key));
-      opiehash(fkey, MDX);
-      i = memcmp(fkey, lastkey, sizeof(key));
+    if (opieetob(&key, c) == 1) {
+      memcpy(&fkey, &key, sizeof(struct opie_otpkey));
+      opiehash(&fkey, MDX);
+      i = memcmp(&fkey, &lastkey, sizeof(struct opie_otpkey));
     }
     break;
   case RESPONSE_HEX:
     i = 1;
 
-    if (opieatob8(key, c)) {
-      memcpy(fkey, key, sizeof(key));
-      opiehash(fkey, MDX);
-      i = memcmp(fkey, lastkey, sizeof(key));
+    if (opieatob8(&key, c)) {
+      memcpy(&fkey, &key, sizeof(struct opie_otpkey));
+      opiehash(&fkey, MDX);
+      i = memcmp(&fkey, &lastkey, sizeof(struct opie_otpkey));
     }
     break;
   case RESPONSE_INIT_HEX:
@@ -137,17 +146,17 @@ int opieverify FUNCTION((opie, response), struct opie *opie AND char *response)
       *(c2++) = 0;
 
       if (i == RESPONSE_INIT_HEX) {
-	if (!opieatob8(key, c))
+	if (!opieatob8(&key, c))
 	  goto verret;
       } else {
-	if (opieetob(key, c) != 1)
+	if (opieetob(&key, c) != 1)
 	  goto verret;
       }
 
-      memcpy(fkey, key, sizeof(key));
-      opiehash(fkey, MDX);
+      memcpy(&fkey, &key, sizeof(struct opie_otpkey));
+      opiehash(&fkey, MDX);
 
-      if (memcmp(fkey, lastkey, sizeof(key)))
+      if (memcmp(&fkey, &lastkey, sizeof(struct opie_otpkey)))
 	goto verret;
 
       if (changed(opie))
@@ -155,7 +164,7 @@ int opieverify FUNCTION((opie, response), struct opie *opie AND char *response)
       
       opie->opie_n--;
 
-      if (!opiebtoa8(opie->opie_val, key))
+      if (!opiebtoa8(opie->opie_val, &key))
 	goto verret;
 
       if (__opiewriterec(opie))
@@ -174,10 +183,10 @@ int opieverify FUNCTION((opie, response), struct opie *opie AND char *response)
       }
 
       if (i == RESPONSE_INIT_HEX) {
-	if (!opieatob8(key, c2))
+	if (!opieatob8(&key, c2))
 	  goto verret;
       } else {
-	if (opieetob(key, c2) != 1)
+	if (opieetob(&key, c2) != 1)
 	  goto verret;
       }
     }
@@ -201,7 +210,7 @@ int opieverify FUNCTION((opie, response), struct opie *opie AND char *response)
   opie->opie_n--;
 
 verwrt:
-  if (!opiebtoa8(opie->opie_val, key))
+  if (!opiebtoa8(opie->opie_val, &key))
     goto verret;
   rval = __opiewriterec(opie);
 
diff --git a/contrib/opie/libopie/version.c b/contrib/opie/libopie/version.c
index ef6523d..2364e77 100644
--- a/contrib/opie/libopie/version.c
+++ b/contrib/opie/libopie/version.c
@@ -1,7 +1,7 @@
 /* version.c: The opieversion() library function.
 
 %%% portions-copyright-cmetz-96
-Portions of this software are Copyright 1996-1998 by Craig Metz, All Rights
+Portions of this software are Copyright 1996-1999 by Craig Metz, All Rights
 Reserved. The Inner Net License Version 2 applies to these portions of
 the software.
 You should have received a copy of the license with this software. If
diff --git a/contrib/opie/libopie/writerec.c b/contrib/opie/libopie/writerec.c
index 0843423..5ba53fe 100644
--- a/contrib/opie/libopie/writerec.c
+++ b/contrib/opie/libopie/writerec.c
@@ -1,13 +1,15 @@
 /* writerec.c: The __opiewriterec() library function.
 
 %%% copyright-cmetz-96
-This software is Copyright 1996-1998 by Craig Metz, All Rights Reserved.
-The Inner Net License Version 2 applies to this software.
+This software is Copyright 1996-2001 by Craig Metz, All Rights Reserved.
+The Inner Net License Version 3 applies to this software.
 You should have received a copy of the license with this software. If
 you didn't get a copy, you may request one from <license@inner.net>.
 
 	History:
 
+	Modified by cmetz for OPIE 2.4. Check that seed and sequence number are
+		valid.
 	Modified by cmetz for OPIE 2.31. Removed active attack protection
 		support. Fixed passwd bug.
 	Created by cmetz for OPIE 2.3 from passwd.c.
@@ -30,6 +32,7 @@ you didn't get a copy, you may request one from <license@inner.net>.
 #if HAVE_STDLIB_H
 #include <stdlib.h>
 #endif /* HAVE_STDLIB_H */
+#include <ctype.h>
 #include "opie.h"
 
 char *__opienone = "****************";
@@ -40,6 +43,7 @@ int __opiewriterec FUNCTION((opie), struct opie *opie)
   time_t now;
   FILE *f, *f2 = NULL;
   int i = 0;
+  char *c;
 
   time(&now);
   if (strftime(buf2, sizeof(buf2), " %b %d,%Y %T", localtime(&now)) < 1)
@@ -51,7 +55,14 @@ int __opiewriterec FUNCTION((opie), struct opie *opie)
     opie->opie_flags = opie2.opie_flags;
     opie->opie_recstart = opie2.opie_recstart;
   }
-    
+
+  for (c = opie->opie_seed; *c; c++)
+    if (!isalnum(*c))
+      return -1;
+
+  if ((opie->opie_n < 0) || (opie->opie_n > 9999))
+      return -1;
+
   switch(i) {
   case 0:
     if (!(f = __opieopen(KEY_FILE, 1, 0644)))
-- 
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