5 files changed, 127 insertions, 3 deletions

diff --git a/ChangeLog b/ChangeLog
index 6b4615fe5..df472f843 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -3,6 +3,9 @@
    - markus@cvs.openbsd.org 2001/01/19 12:45:26
      [ssh-chall.c servconf.c servconf.h ssh.h sshd.c]
      only auth-chall.c needs #ifdef SKEY
+ - (bal) Slight auth2-pam.c clean up.
+ - (bal) Includes a fake-regexp.h to be only used if regcomp() is found,
+   but no 'regexp.h' found (SCO OpenServer 3 lacks the header).
 
 20010119
  - (djm) Update versions in RPM specfiles
diff --git a/acconfig.h b/acconfig.h
index 439a7ba1c..936a7ca5e 100644
--- a/acconfig.h
+++ b/acconfig.h
@@ -252,6 +252,9 @@
 #undef HAVE_SS_FAMILY_IN_SS
 #undef HAVE___SS_FAMILY_IN_SS
 
+/* Define if you have a regcomp() function */
+#undef HAVE_REGCOMP
+
 /* Define if you have /dev/ptmx */
 #undef HAVE_DEV_PTMX
 
diff --git a/compat.c b/compat.c
index 47af1a8ea..6e0ed65af 100644
--- a/compat.c
+++ b/compat.c
@@ -32,7 +32,15 @@ RCSID("$OpenBSD: compat.c,v 1.33 2001/01/08 22:29:05 markus Exp $");
 #ifdef HAVE_LIBPCRE
 #  include <pcreposix.h>
 #else /* Use native regex libraries */
-#  include <regex.h>
+#  ifdef HAVE_REGEX_H
+#    include <regex.h>
+#  else
+#    ifdef HAVE_REGCOMP
+#      include "fake-regex.h"
+#    else
+#      error "No regular libraries detected.  See INSTALL file."
+#    endif
+#  endif
 #endif /* HAVE_LIBPCRE */
 
 int compat13 = 0;
diff --git a/configure.in b/configure.in
index ad05a6e7c..23d5a0944 100644
--- a/configure.in
+++ b/configure.in
@@ -296,7 +296,7 @@ AC_CHECK_LIB(z, deflate, ,AC_MSG_ERROR([*** zlib missing - please install first
 AC_CHECK_LIB(util, login, AC_DEFINE(HAVE_LIBUTIL_LOGIN) LIBS="$LIBS -lutil")
 
 AC_CHECK_FUNC(regcomp, 
-        [],
+        [ AC_DEFINE(HAVE_REGCOMP)],
         [
                 AC_CHECK_LIB(pcre, pcre_info, 
                         AC_DEFINE(HAVE_LIBPCRE) LIBS="$LIBS -lpcreposix -lpcre")
@@ -312,7 +312,7 @@ AC_CHECK_FUNC(utimes,
 )
 
 # Checks for header files.
-AC_CHECK_HEADERS(bstring.h endian.h floatingpoint.h getopt.h lastlog.h limits.h login.h login_cap.h maillock.h netdb.h netgroup.h netinet/in_systm.h paths.h poll.h pty.h shadow.h security/pam_appl.h sys/bitypes.h sys/bsdtty.h sys/cdefs.h sys/poll.h sys/queue.h sys/select.h sys/stat.h sys/stropts.h sys/sysmacros.h sys/time.h sys/ttcompat.h sys/un.h stddef.h time.h ttyent.h usersec.h util.h utime.h utmp.h utmpx.h vis.h)
+AC_CHECK_HEADERS(bstring.h endian.h floatingpoint.h getopt.h lastlog.h limits.h login.h login_cap.h maillock.h netdb.h netgroup.h netinet/in_systm.h paths.h poll.h pty.h regexp.h shadow.h security/pam_appl.h sys/bitypes.h sys/bsdtty.h sys/cdefs.h sys/poll.h sys/queue.h sys/select.h sys/stat.h sys/stropts.h sys/sysmacros.h sys/time.h sys/ttcompat.h sys/un.h stddef.h time.h ttyent.h usersec.h util.h utime.h utmp.h utmpx.h vis.h)
 
 dnl    Checks for library functions.
 AC_CHECK_FUNCS(arc4random atexit b64_ntop bcopy bindresvport_af clock fchmod freeaddrinfo futimes gai_strerror getcwd getaddrinfo getgrouplist getnameinfo getrlimit getrusage getttyent inet_aton inet_ntoa innetgr login_getcapbool md5_crypt memmove mkdtemp on_exit openpty realpath rresvport_af setdtablesize setenv seteuid setlogin setproctitle setreuid setrlimit setsid sigaction sigvec snprintf strerror strlcat strlcpy strmode strsep strtok_r sysconf utimes vsnprintf vhangup vis waitpid _getpty __b64_ntop)
diff --git a/fake-regex.h b/fake-regex.h
new file mode 100644
index 000000000..8c4a8f1ca
--- /dev/null
+++ b/fake-regex.h
@@ -0,0 +1,110 @@
+/*      $OpenBSD: regex.h,v 1.3 1997/09/21 10:45:48 niklas Exp $        */
+/*      $NetBSD: regex.h,v 1.4.6.1 1996/06/10 18:57:07 explorer Exp $   */
+
+/*-
+ * Copyright (c) 1992 Henry Spencer.
+ * Copyright (c) 1992, 1993
+ *      The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Henry Spencer of the University of Toronto.
+ *
+ * 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. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *      This product includes software developed by the University of
+ *      California, Berkeley and its contributors.
+ * 4. Neither the name of the University 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 THE REGENTS 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 REGENTS 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.
+ *
+ *      @(#)regex.h     8.1 (Berkeley) 6/2/93
+ */
+
+#ifndef _REGEX_H_
+#define _REGEX_H_
+
+#include <sys/cdefs.h>
+#include <sys/types.h>
+
+/* types */
+typedef off_t regoff_t;
+
+typedef struct {
+        int re_magic;
+        size_t re_nsub;         /* number of parenthesized subexpressions */
+        const char *re_endp;    /* end pointer for REG_PEND */
+        struct re_guts *re_g;   /* none of your business :-) */
+} regex_t;
+
+typedef struct {
+        regoff_t rm_so;         /* start of match */
+        regoff_t rm_eo;         /* end of match */
+} regmatch_t;
+
+/* regcomp() flags */
+#define REG_BASIC       0000
+#define REG_EXTENDED    0001
+#define REG_ICASE       0002
+#define REG_NOSUB       0004
+#define REG_NEWLINE     0010
+#define REG_NOSPEC      0020
+#define REG_PEND        0040
+#define REG_DUMP        0200
+
+/* regerror() flags */
+#define REG_NOMATCH      1
+#define REG_BADPAT       2
+#define REG_ECOLLATE     3
+#define REG_ECTYPE       4
+#define REG_EESCAPE      5
+#define REG_ESUBREG      6
+#define REG_EBRACK       7
+#define REG_EPAREN       8
+#define REG_EBRACE       9
+#define REG_BADBR       10
+#define REG_ERANGE      11
+#define REG_ESPACE      12
+#define REG_BADRPT      13
+#define REG_EMPTY       14
+#define REG_ASSERT      15
+#define REG_INVARG      16
+#define REG_ATOI        255     /* convert name to number (!) */
+#define REG_ITOA        0400    /* convert number to name (!) */
+
+/* regexec() flags */
+#define REG_NOTBOL      00001
+#define REG_NOTEOL      00002
+#define REG_STARTEND    00004
+#define REG_TRACE       00400   /* tracing of execution */
+#define REG_LARGE       01000   /* force large representation */
+#define REG_BACKR       02000   /* force use of backref code */
+
+__BEGIN_DECLS
+int     regcomp __P((regex_t *, const char *, int));
+size_t  regerror __P((int, const regex_t *, char *, size_t));
+int     regexec __P((const regex_t *,
+            const char *, size_t, regmatch_t [], int));
+void    regfree __P((regex_t *));
+__END_DECLS
+
+#endif /* !_REGEX_H_ */