openssh/openssh-lpk-5.4p1-0.3.10.diff

diff -Naurp openssh-5.4p1/auth2-pubkey.c openssh-5.4p1.oden/auth2-pubkey.c
--- openssh-5.4p1/auth2-pubkey.c	2010-03-04 11:53:35.000000000 +0100
+++ openssh-5.4p1.oden/auth2-pubkey.c	2010-03-08 12:17:30.957380964 +0100
@@ -58,6 +58,10 @@
 #include "misc.h"
 #include "authfile.h"
 
+#ifdef WITH_LDAP_PUBKEY
+#include "ldapauth.h"
+#endif
+
 /* import */
 extern ServerOptions options;
 extern u_char *session_id2;
@@ -187,10 +191,79 @@ user_key_allowed2(struct passwd *pw, Key
 	u_long linenum = 0;
 	Key *found;
 	char *fp;
+#ifdef WITH_LDAP_PUBKEY
+	ldap_key_t * k;
+	unsigned int i = 0;
+#endif
 
 	/* Temporarily use the user's uid. */
 	temporarily_use_uid(pw);
 
+#ifdef WITH_LDAP_PUBKEY
+ 	found_key = 0;
+ 	/* allocate a new key type */
+ 	found = key_new(key->type);
+ 
+ 	/* first check if the options is enabled, then try.. */
+	if (options.lpk.on) {
+	    debug("[LDAP] trying LDAP first uid=%s",pw->pw_name);
+	    if (ldap_ismember(&options.lpk, pw->pw_name) > 0) {
+		if ((k = ldap_getuserkey(&options.lpk, pw->pw_name)) != NULL) {
+		    /* Skip leading whitespace, empty and comment lines. */
+		    for (i = 0 ; i < k->num ; i++) {
+			/* dont forget if multiple keys to reset options */
+			char *cp, *options = NULL;
+
+			for (cp = (char *)k->keys[i]->bv_val; *cp == ' ' || *cp == '\t'; cp++)
+			    ;
+			if (!*cp || *cp == '\n' || *cp == '#')
+			    continue;
+
+			if (key_read(found, &cp) != 1) {
+			    /* no key?  check if there are options for this key */
+			    int quoted = 0;
+			    debug2("[LDAP] user_key_allowed: check options: '%s'", cp);
+			    options = cp;
+			    for (; *cp && (quoted || (*cp != ' ' && *cp != '\t')); cp++) {
+				if (*cp == '\\' && cp[1] == '"')
+				    cp++;	/* Skip both */
+				else if (*cp == '"')
+				    quoted = !quoted;
+			    }
+			    /* Skip remaining whitespace. */
+			    for (; *cp == ' ' || *cp == '\t'; cp++)
+				;
+			    if (key_read(found, &cp) != 1) {
+				debug2("[LDAP] user_key_allowed: advance: '%s'", cp);
+				/* still no key?  advance to next line*/
+				continue;
+			    }
+			}
+
+			if (key_equal(found, key) &&
+				auth_parse_options(pw, options, file, linenum) == 1) {
+			    found_key = 1;
+			    debug("[LDAP] matching key found");
+			    fp = key_fingerprint(found, SSH_FP_MD5, SSH_FP_HEX);
+			    verbose("[LDAP] Found matching %s key: %s", key_type(found), fp);
+
+			    /* restoring memory */
+			    ldap_keys_free(k);
+			    xfree(fp);
+			    restore_uid();
+			    key_free(found);
+			    return found_key;
+			    break;
+			}
+		    }/* end of LDAP for() */
+		} else {
+		    logit("[LDAP] no keys found for '%s'!", pw->pw_name);
+		}
+	    } else {
+		logit("[LDAP] '%s' is not in '%s'", pw->pw_name, options.lpk.sgroup);
+	    }
+	}
+#endif
 	debug("trying public key file %s", file);
 	f = auth_openkeyfile(file, pw, options.strict_modes);
 
diff -Naurp openssh-5.4p1/auth-rsa.c openssh-5.4p1.oden/auth-rsa.c
--- openssh-5.4p1/auth-rsa.c	2010-03-04 11:53:35.000000000 +0100
+++ openssh-5.4p1.oden/auth-rsa.c	2010-03-08 12:17:30.958380880 +0100
@@ -177,10 +177,96 @@ auth_rsa_key_allowed(struct passwd *pw, 
 	FILE *f;
 	u_long linenum = 0;
 	Key *key;
+#ifdef WITH_LDAP_PUBKEY
+	ldap_key_t * k;
+	unsigned int i = 0;
+#endif
 
 	/* Temporarily use the user's uid. */
 	temporarily_use_uid(pw);
 
+#ifdef WITH_LDAP_PUBKEY
+	/* here is the job */
+	key = key_new(KEY_RSA1);
+
+	if (options.lpk.on) {
+	    debug("[LDAP] trying LDAP first uid=%s", pw->pw_name);
+	    if ( ldap_ismember(&options.lpk, pw->pw_name) > 0) {
+		if ( (k = ldap_getuserkey(&options.lpk, pw->pw_name)) != NULL) {
+		    for (i = 0 ; i < k->num ; i++) {
+			char *cp, *options = NULL;
+
+			for (cp = k->keys[i]->bv_val; *cp == ' ' || *cp == '\t'; cp++)
+			    ;
+			if (!*cp || *cp == '\n' || *cp == '#')
+			    continue;
+
+			/*
+			* Check if there are options for this key, and if so,
+			* save their starting address and skip the option part
+			* for now.  If there are no options, set the starting
+			* address to NULL.
+			 */
+			if (*cp < '0' || *cp > '9') {
+			    int quoted = 0;
+			    options = cp;
+			    for (; *cp && (quoted || (*cp != ' ' && *cp != '\t')); cp++) {
+				if (*cp == '\\' && cp[1] == '"')
+				    cp++;	/* Skip both */
+				else if (*cp == '"')
+				    quoted = !quoted;
+			    }
+			} else
+			    options = NULL;
+
+			/* Parse the key from the line. */
+			if (hostfile_read_key(&cp, &bits, key) == 0) {
+			    debug("[LDAP] line %d: non ssh1 key syntax", i);
+			    continue;
+			}
+			/* cp now points to the comment part. */
+
+			/* Check if the we have found the desired key (identified by its modulus). */
+			if (BN_cmp(key->rsa->n, client_n) != 0)
+			    continue;
+
+			/* check the real bits  */
+			if (bits != (unsigned int)BN_num_bits(key->rsa->n))
+			    logit("[LDAP] Warning: ldap, line %lu: keysize mismatch: "
+				    "actual %d vs. announced %d.", (unsigned long)i, BN_num_bits(key->rsa->n), bits);
+
+			/* We have found the desired key. */
+			/*
+			* If our options do not allow this key to be used,
+			* do not send challenge.
+			 */
+			if (!auth_parse_options(pw, options, "[LDAP]", (unsigned long) i))
+			    continue;
+
+			/* break out, this key is allowed */
+			allowed = 1;
+
+			/* add the return stuff etc... */
+			/* Restore the privileged uid. */
+			restore_uid();
+
+			/* return key if allowed */
+			if (allowed && rkey != NULL)
+			    *rkey = key;
+			else
+			    key_free(key);
+
+			ldap_keys_free(k);
+			return (allowed);
+		    }
+		} else {
+		    logit("[LDAP] no keys found for '%s'!", pw->pw_name);
+		}
+	    } else {
+		logit("[LDAP] '%s' is not in '%s'", pw->pw_name, options.lpk.sgroup);
+	    }
+	}
+#endif
 	/* The authorized keys. */
 	file = authorized_keys_file(pw);
 	debug("trying public RSA key file %s", file);
diff -Naurp openssh-5.4p1/config.h.in openssh-5.4p1.oden/config.h.in
--- openssh-5.4p1/config.h.in	2010-03-08 01:30:57.000000000 +0100
+++ openssh-5.4p1.oden/config.h.in	2010-03-08 12:17:30.959380993 +0100
@@ -575,6 +575,9 @@
 /* Define to 1 if you have the <linux/if_tun.h> header file. */
 #undef HAVE_LINUX_IF_TUN_H
 
+/* Define if you want LDAP support */
+#undef WITH_LDAP_PUBKEY
+
 /* Define if your libraries define login() */
 #undef HAVE_LOGIN
 
diff -Naurp openssh-5.4p1/configure openssh-5.4p1.oden/configure
--- openssh-5.4p1/configure	2010-03-08 01:30:59.000000000 +0100
+++ openssh-5.4p1.oden/configure	2010-03-08 12:17:30.967381745 +0100
@@ -1340,6 +1340,7 @@ Optional Packages:
   --with-tcp-wrappers[=PATH] Enable tcpwrappers support (optionally in PATH)
   --with-libedit[=PATH]   Enable libedit support for sftp
   --with-audit=module     Enable EXPERIMENTAL audit support (modules=debug,bsm)
+  --with-ldap[=PATH]      Enable LDAP pubkey support (optionally in PATH)
   --with-ssl-dir=PATH     Specify path to OpenSSL installation
   --without-openssl-header-check Disable OpenSSL version consistency check
   --with-ssl-engine       Enable OpenSSL (hardware) ENGINE support
@@ -12845,6 +12846,85 @@ echo "$as_me: error: Unknown audit modul
 fi
 
 
+# Check whether user wants LDAP support
+LDAP_MSG="no"
+
+# Check whether --with-ldap was given.
+if test "${with_ldap+set}" = set; then
+  withval=$with_ldap;
+		if test "x$withval" != "xno" ; then
+
+			if test "x$withval" != "xyes" ; then
+				CPPFLAGS="$CPPFLAGS -I${withval}/include"
+				LDFLAGS="$LDFLAGS -L${withval}/lib"
+			fi
+
+
+cat >>confdefs.h <<\_ACEOF
+#define WITH_LDAP_PUBKEY 1
+_ACEOF
+
+			LIBS="-lldap $LIBS"
+			LDAP_MSG="yes"
+
+			{ echo "$as_me:$LINENO: checking for LDAP support" >&5
+echo $ECHO_N "checking for LDAP support... $ECHO_C" >&6; }
+			cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <sys/types.h>
+				 #include <ldap.h>
+int
+main ()
+{
+(void)ldap_init(0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_compile") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && {
+	 test -z "$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest.$ac_objext; then
+  { echo "$as_me:$LINENO: result: yes" >&5
+echo "${ECHO_T}yes" >&6; }
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+
+				    { echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6; }
+					{ { echo "$as_me:$LINENO: error: ** Incomplete or missing ldap libraries **" >&5
+echo "$as_me: error: ** Incomplete or missing ldap libraries **" >&2;}
+   { (exit 1); exit 1; }; }
+
+
+fi
+
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+		fi
+
+
+fi
+
+
 
 
 
@@ -30786,6 +30866,7 @@ echo "                   SELinux support
 echo "                 Smartcard support: $SCARD_MSG"
 echo "                     S/KEY support: $SKEY_MSG"
 echo "              TCP Wrappers support: $TCPW_MSG"
+echo "                      LDAP support: $LDAP_MSG"
 echo "              MD5 password support: $MD5_MSG"
 echo "                   libedit support: $LIBEDIT_MSG"
 echo "  Solaris process contract support: $SPC_MSG"
diff -Naurp openssh-5.4p1/configure.ac openssh-5.4p1.oden/configure.ac
--- openssh-5.4p1/configure.ac	2010-03-05 05:04:35.000000000 +0100
+++ openssh-5.4p1.oden/configure.ac	2010-03-08 12:17:30.972381498 +0100
@@ -1323,6 +1323,37 @@ AC_ARG_WITH(audit,
 	esac ]
 )
 
+# Check whether user wants LDAP support
+LDAP_MSG="no"
+AC_ARG_WITH(ldap,
+	[  --with-ldap[[=PATH]]      Enable LDAP pubkey support (optionally in PATH)],
+	[
+		if test "x$withval" != "xno" ; then
+
+			if test "x$withval" != "xyes" ; then
+				CPPFLAGS="$CPPFLAGS -I${withval}/include"
+				LDFLAGS="$LDFLAGS -L${withval}/lib"
+			fi
+
+			AC_DEFINE([WITH_LDAP_PUBKEY], 1, [Enable LDAP pubkey support])
+			LIBS="-lldap $LIBS"
+			LDAP_MSG="yes"
+	
+			AC_MSG_CHECKING([for LDAP support])
+			AC_TRY_COMPILE(
+				[#include <sys/types.h>
+				 #include <ldap.h>],
+				[(void)ldap_init(0, 0);],
+				[AC_MSG_RESULT(yes)],
+				[
+				    AC_MSG_RESULT(no) 
+					AC_MSG_ERROR([** Incomplete or missing ldap libraries **])
+				]
+        	)
+		fi
+	]
+)
+
 dnl    Checks for library functions. Please keep in alphabetical order
 AC_CHECK_FUNCS( \
 	arc4random \
@@ -4185,6 +4216,7 @@ echo "                   SELinux support
 echo "                 Smartcard support: $SCARD_MSG"
 echo "                     S/KEY support: $SKEY_MSG"
 echo "              TCP Wrappers support: $TCPW_MSG"
+echo "                      LDAP support: $LDAP_MSG"
 echo "              MD5 password support: $MD5_MSG"
 echo "                   libedit support: $LIBEDIT_MSG"
 echo "  Solaris process contract support: $SPC_MSG"
diff -Naurp openssh-5.4p1/ldapauth.c openssh-5.4p1.oden/ldapauth.c
--- openssh-5.4p1/ldapauth.c	1970-01-01 01:00:00.000000000 +0100
+++ openssh-5.4p1.oden/ldapauth.c	2010-03-08 12:17:30.974381643 +0100
@@ -0,0 +1,575 @@
+/* 
+ * $Id: openssh-lpk-4.3p1-0.3.7.patch,v 1.3 2006/04/18 15:29:09 eau Exp $
+ */
+
+/*
+ *
+ * Copyright (c) 2005, Eric AUGE <eau@phear.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:
+ *
+ * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+ * 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.
+ * Neither the name of the phear.org 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 COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.
+ *
+ *
+ */
+
+#include "includes.h"
+
+#ifdef WITH_LDAP_PUBKEY
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+
+#include "ldapauth.h"
+#include "log.h"
+
+static char *attrs[] = {
+    PUBKEYATTR,
+    NULL
+};
+
+/* filter building infos */
+#define FILTER_GROUP_PREFIX "(&(objectclass=posixGroup)"
+#define FILTER_OR_PREFIX "(|"
+#define FILTER_OR_SUFFIX ")"
+#define FILTER_CN_PREFIX "(cn="
+#define FILTER_CN_SUFFIX ")"
+#define FILTER_UID_FORMAT "(memberUid=%s)"
+#define FILTER_GROUP_SUFFIX ")"
+#define FILTER_GROUP_SIZE(group) (size_t) (strlen(group)+(ldap_count_group(group)*5)+52)
+
+/* just filter building stuff */
+#define REQUEST_GROUP_SIZE(filter, uid) (size_t) (strlen(filter)+strlen(uid)+1)
+#define REQUEST_GROUP(buffer, prefilter, pwname) \
+    buffer = (char *) calloc(REQUEST_GROUP_SIZE(prefilter, pwname), sizeof(char)); \
+    if (!buffer) { \
+        perror("calloc()"); \
+        return FAILURE; \
+    } \
+    snprintf(buffer, REQUEST_GROUP_SIZE(prefilter,pwname), prefilter, pwname)
+/*
+XXX OLD group building macros
+#define REQUEST_GROUP_SIZE(grp, uid) (size_t) (strlen(grp)+strlen(uid)+46)
+#define REQUEST_GROUP(buffer,pwname,grp) \
+    buffer = (char *) calloc(REQUEST_GROUP_SIZE(grp, pwname), sizeof(char)); \
+    if (!buffer) { \
+        perror("calloc()"); \
+        return FAILURE; \
+    } \
+    snprintf(buffer,REQUEST_GROUP_SIZE(grp,pwname),"(&(objectclass=posixGroup)(cn=%s)(memberUid=%s))",grp,pwname)
+    */
+
+/*
+XXX stock upstream version without extra filter support
+#define REQUEST_USER_SIZE(uid) (size_t) (strlen(uid)+64)
+#define REQUEST_USER(buffer, pwname) \
+    buffer = (char *) calloc(REQUEST_USER_SIZE(pwname), sizeof(char)); \
+    if (!buffer) { \
+        perror("calloc()"); \
+        return NULL; \
+    } \
+    snprintf(buffer,REQUEST_USER_SIZE(pwname),"(&(objectclass=posixAccount)(objectclass=ldapPublicKey)(uid=%s))",pwname)
+   */
+
+#define REQUEST_USER_SIZE(uid, filter) (size_t) (strlen(uid)+64+(filter != NULL ? strlen(filter) : 0))
+#define REQUEST_USER(buffer, pwname, customfilter) \
+    buffer = (char *) calloc(REQUEST_USER_SIZE(pwname, customfilter), sizeof(char)); \
+    if (!buffer) { \
+        perror("calloc()"); \
+        return NULL; \
+    } \
+    snprintf(buffer, REQUEST_USER_SIZE(pwname, customfilter), \
+    	"(&(objectclass=posixAccount)(objectclass=ldapPublicKey)(uid=%s)%s)", \
+	pwname, (customfilter != NULL ? customfilter : ""))
+
+/* some portable and working tokenizer, lame though */
+static int tokenize(char ** o, size_t size, char * input) {
+    unsigned int i = 0, num;
+    const char * charset = " \t";
+    char * ptr = input;
+
+    /* leading white spaces are ignored */
+    num = strspn(ptr, charset);
+    ptr += num;
+
+    while ((num = strcspn(ptr, charset))) {
+        if (i < size-1) {
+            o[i++] = ptr;
+            ptr += num;
+            if (*ptr)
+                *ptr++ = '\0';
+        }
+    }
+    o[i] = NULL;
+    return SUCCESS;
+}
+
+void ldap_close(ldap_opt_t * ldap) {
+
+    if (!ldap)
+        return;
+
+    if ( ldap_unbind_ext(ldap->ld, NULL, NULL) < 0)
+	ldap_perror(ldap->ld, "ldap_unbind()");
+
+    ldap->ld = NULL;
+    FLAG_SET_DISCONNECTED(ldap->flags);
+
+    return;
+}
+
+/* init && bind */
+int ldap_connect(ldap_opt_t * ldap) {
+    int version = LDAP_VERSION3;
+
+    if (!ldap->servers)
+        return FAILURE;
+
+    /* Connection Init and setup */
+    ldap->ld = ldap_init(ldap->servers, LDAP_PORT);
+    if (!ldap->ld) {
+        ldap_perror(ldap->ld, "ldap_init()");
+        return FAILURE;
+    }
+
+    if ( ldap_set_option(ldap->ld, LDAP_OPT_PROTOCOL_VERSION, &version) != LDAP_OPT_SUCCESS) {
+        ldap_perror(ldap->ld, "ldap_set_option(LDAP_OPT_PROTOCOL_VERSION)");
+        return FAILURE;
+    }
+
+    /* Timeouts setup */
+    if (ldap_set_option(ldap->ld, LDAP_OPT_NETWORK_TIMEOUT, &ldap->b_timeout) != LDAP_SUCCESS) {
+        ldap_perror(ldap->ld, "ldap_set_option(LDAP_OPT_NETWORK_TIMEOUT)");
+    }
+    if (ldap_set_option(ldap->ld, LDAP_OPT_TIMEOUT, &ldap->s_timeout) != LDAP_SUCCESS) {
+        ldap_perror(ldap->ld, "ldap_set_option(LDAP_OPT_TIMEOUT)");
+    }
+
+    /* TLS support */
+    if ( (ldap->tls == -1) || (ldap->tls == 1) ) {
+        if (ldap_start_tls_s(ldap->ld, NULL, NULL ) != LDAP_SUCCESS) {
+            /* failed then reinit the initial connect */
+            ldap_perror(ldap->ld, "ldap_connect: (TLS) ldap_start_tls()");
+            if (ldap->tls == 1)
+                return FAILURE;
+
+            ldap->ld = ldap_init(ldap->servers, LDAP_PORT);
+            if (!ldap->ld) { 
+                ldap_perror(ldap->ld, "ldap_init()");
+                return FAILURE;
+            }
+
+            if ( ldap_set_option(ldap->ld, LDAP_OPT_PROTOCOL_VERSION, &version) != LDAP_OPT_SUCCESS) {
+                 ldap_perror(ldap->ld, "ldap_set_option()");
+                 return FAILURE;
+            }
+        }
+    }
+
+
+    if ( ldap_simple_bind_s(ldap->ld, ldap->binddn, ldap->bindpw) != LDAP_SUCCESS) {
+        ldap_perror(ldap->ld, "ldap_simple_bind_s()");
+        return FAILURE;
+    }
+
+    /* says it is connected */
+    FLAG_SET_CONNECTED(ldap->flags);
+
+    return SUCCESS;
+}
+
+/* must free allocated ressource */
+static char * ldap_build_host(char *host, int port) {
+    unsigned int size = strlen(host)+11;
+    char * h = (char *) calloc (size, sizeof(char));
+    int rc;
+    if (!h)
+         return NULL;
+
+    rc = snprintf(h, size, "%s:%d ", host, port);
+    if (rc == -1)
+        return NULL;
+    return h;
+}
+
+static int ldap_count_group(const char * input) {
+    const char * charset = " \t";
+    const char * ptr = input;
+    unsigned int count = 0;
+    unsigned int num;
+
+    num = strspn(ptr, charset);
+    ptr += num;
+
+    while ((num = strcspn(ptr, charset))) {
+    count++;
+    ptr += num;
+    ptr++;
+    }
+
+    return count;
+}
+
+/* format filter */
+char * ldap_parse_groups(const char * groups) {
+    unsigned int buffer_size = FILTER_GROUP_SIZE(groups);
+    char * buffer = (char *) calloc(buffer_size, sizeof(char));
+    char * g = NULL;
+    char * garray[32];
+    unsigned int i = 0;
+
+    if ((!groups)||(!buffer))
+        return NULL;
+
+    g = strdup(groups);
+    if (!g) {
+        free(buffer);
+        return NULL;
+    }
+
+    /* first separate into n tokens */
+    if ( tokenize(garray, sizeof(garray)/sizeof(*garray), g) < 0) {
+        free(g);
+        free(buffer);
+        return NULL;
+    }
+
+    /* build the final filter format */
+    strlcat(buffer, FILTER_GROUP_PREFIX, buffer_size);
+    strlcat(buffer, FILTER_OR_PREFIX, buffer_size);
+    i = 0;
+    while (garray[i]) {
+        strlcat(buffer, FILTER_CN_PREFIX, buffer_size);
+        strlcat(buffer, garray[i], buffer_size);
+        strlcat(buffer, FILTER_CN_SUFFIX, buffer_size);
+        i++;
+    }
+    strlcat(buffer, FILTER_OR_SUFFIX, buffer_size);
+    strlcat(buffer, FILTER_UID_FORMAT, buffer_size);
+    strlcat(buffer, FILTER_GROUP_SUFFIX, buffer_size);
+
+    free(g);
+    return buffer;
+}
+
+/* a bit dirty but leak free  */
+char * ldap_parse_servers(const char * servers) {
+    char * s = NULL;
+    char * tmp = NULL, *urls[32];
+    unsigned int num = 0 , i = 0 , asize = 0;
+    LDAPURLDesc *urld[32];
+
+    if (!servers)
+        return NULL;
+
+    /* local copy of the arg */
+    s = strdup(servers);
+    if (!s)
+        return NULL;
+
+    /* first separate into URL tokens */
+    if ( tokenize(urls, sizeof(urls)/sizeof(*urls), s) < 0)
+        return NULL;
+
+    i = 0;
+    while (urls[i]) {
+        if (! ldap_is_ldap_url(urls[i]) ||
+           (ldap_url_parse(urls[i], &urld[i]) != 0)) {
+                return NULL;
+        }
+        i++;
+    }
+
+    /* now free(s) */
+    free (s);
+
+    /* how much memory do we need */
+    num = i;
+    for (i = 0 ; i < num ; i++)
+        asize += strlen(urld[i]->lud_host)+11;
+
+    /* alloc */
+    s = (char *) calloc( asize+1 , sizeof(char));
+    if (!s) {
+        for (i = 0 ; i < num ; i++)
+            ldap_free_urldesc(urld[i]);
+        return NULL;
+    }
+
+    /* then build the final host string */
+    for (i = 0 ; i < num ; i++) {
+        /* built host part */
+        tmp = ldap_build_host(urld[i]->lud_host, urld[i]->lud_port);
+        strncat(s, tmp, strlen(tmp));
+        ldap_free_urldesc(urld[i]);
+        free(tmp);
+    }
+
+    return s;
+}
+
+void ldap_options_print(ldap_opt_t * ldap) {
+    debug("ldap options:");
+    debug("servers: %s", ldap->servers);
+    if (ldap->u_basedn)
+        debug("user basedn: %s", ldap->u_basedn);
+    if (ldap->g_basedn)
+        debug("group basedn: %s", ldap->g_basedn);
+    if (ldap->binddn)
+        debug("binddn: %s", ldap->binddn);
+    if (ldap->bindpw)
+        debug("bindpw: %s", ldap->bindpw);
+    if (ldap->sgroup)
+        debug("group: %s", ldap->sgroup);
+    if (ldap->filter)
+        debug("filter: %s", ldap->filter);
+}
+
+void ldap_options_free(ldap_opt_t * l) {
+    if (!l)
+        return;
+    if (l->servers)
+        free(l->servers);
+    if (l->u_basedn)
+        free(l->u_basedn);
+    if (l->g_basedn)
+        free(l->g_basedn);
+    if (l->binddn)
+        free(l->binddn);
+    if (l->bindpw)
+        free(l->bindpw);
+    if (l->sgroup)
+        free(l->sgroup);
+    if (l->fgroup)
+        free(l->fgroup);
+    if (l->filter)
+        free(l->filter);
+    if (l->l_conf)
+        free(l->l_conf);
+    free(l);
+}
+
+/* free keys */
+void ldap_keys_free(ldap_key_t * k) {
+    ldap_value_free_len(k->keys);
+    free(k);
+    return;
+}
+
+ldap_key_t * ldap_getuserkey(ldap_opt_t *l, const char * user) {
+    ldap_key_t * k = (ldap_key_t *) calloc (1, sizeof(ldap_key_t));
+    LDAPMessage *res, *e;
+    char * filter;
+    int i;
+
+    if ((!k) || (!l))
+         return NULL;
+
+    /* Am i still connected ? RETRY n times */
+    /* XXX TODO: setup some conf value for retrying */
+    if (!(l->flags & FLAG_CONNECTED))
+        for (i = 0 ; i < 2 ; i++)
+            if (ldap_connect(l) == 0)
+                break;
+
+    /* quick check for attempts to be evil */
+    if ((strchr(user, '(') != NULL) || (strchr(user, ')') != NULL) ||
+        (strchr(user, '*') != NULL) || (strchr(user, '\\') != NULL))
+        return NULL;
+
+    /* build  filter for LDAP request */
+    REQUEST_USER(filter, user, l->filter);
+
+    if ( ldap_search_st( l->ld,
+        l->u_basedn,
+        LDAP_SCOPE_SUBTREE,
+        filter,
+        attrs, 0, &l->s_timeout, &res ) != LDAP_SUCCESS) {
+        
+        ldap_perror(l->ld, "ldap_search_st()");
+
+        free(filter);
+        free(k);
+
+        /* XXX error on search, timeout etc.. close ask for reconnect */
+        ldap_close(l);
+
+        return NULL;
+    } 
+
+    /* free */
+    free(filter);
+
+    /* check if any results */
+    i = ldap_count_entries(l->ld,res);
+    if (i <= 0) {
+        ldap_msgfree(res);
+        free(k);
+        return NULL;
+    }
+
+    if (i > 1)
+        debug("[LDAP] duplicate entries, using the FIRST entry returned");
+
+    e = ldap_first_entry(l->ld, res);
+    k->keys = ldap_get_values_len(l->ld, e, PUBKEYATTR);
+    k->num = ldap_count_values_len(k->keys);
+
+    ldap_msgfree(res);
+    return k;
+}
+
+
+/* -1 if trouble
+   0 if user is NOT member of current server group
+   1 if user IS MEMBER of current server group 
+ */
+int ldap_ismember(ldap_opt_t * l, const char * user) {
+    LDAPMessage *res;
+    char * filter;
+    int i;
+
+    if ((!l->sgroup) || !(l->g_basedn))
+        return 1;
+
+    /* Am i still connected ? RETRY n times */
+    /* XXX TODO: setup some conf value for retrying */
+    if (!(l->flags & FLAG_CONNECTED)) 
+        for (i = 0 ; i < 2 ; i++)
+            if (ldap_connect(l) == 0)
+                 break;
+
+    /* quick check for attempts to be evil */
+    if ((strchr(user, '(') != NULL) || (strchr(user, ')') != NULL) ||
+        (strchr(user, '*') != NULL) || (strchr(user, '\\') != NULL))
+        return FAILURE;
+
+    /* build filter for LDAP request */
+    REQUEST_GROUP(filter, l->fgroup, user);
+
+    if (ldap_search_st( l->ld, 
+        l->g_basedn,
+        LDAP_SCOPE_SUBTREE,
+        filter,
+        NULL, 0, &l->s_timeout, &res) != LDAP_SUCCESS) {
+    
+        ldap_perror(l->ld, "ldap_search_st()");
+
+        free(filter);
+
+        /* XXX error on search, timeout etc.. close ask for reconnect */
+        ldap_close(l);
+
+        return FAILURE;
+    }
+
+    free(filter);
+
+    /* check if any results */
+    if (ldap_count_entries(l->ld, res) > 0) {
+        ldap_msgfree(res);
+        return 1;
+    }
+
+    ldap_msgfree(res);
+    return 0;
+}
+
+/*
+ * ldap.conf simple parser
+ * XXX TODO:  sanity checks
+ * must either
+ * - free the previous ldap_opt_before replacing entries
+ * - free each necessary previously parsed elements
+ * ret:
+ * -1 on FAILURE, 0 on SUCCESS
+ */
+int ldap_parse_lconf(ldap_opt_t * l) {
+    FILE * lcd; /* ldap.conf descriptor */
+    char buf[BUFSIZ];
+    char * s = NULL, * k = NULL, * v = NULL;
+    int li, len;
+
+    lcd = fopen (l->l_conf, "r");
+    if (lcd == NULL) {
+        /* debug("Cannot open %s", l->l_conf); */
+        perror("ldap_parse_lconf()");
+        return FAILURE;
+    }
+    
+    while (fgets (buf, sizeof (buf), lcd) != NULL) {
+
+        if (*buf == '\n' || *buf == '#')
+            continue;
+
+        k = buf;
+        v = k;
+        while (*v != '\0' && *v != ' ' && *v != '\t')
+            v++;
+
+        if (*v == '\0')
+            continue;
+
+        *(v++) = '\0';
+
+        while (*v == ' ' || *v == '\t')
+            v++;
+
+        li = strlen (v) - 1;
+        while (v[li] == ' ' || v[li] == '\t' || v[li] == '\n')
+            --li;
+        v[li + 1] = '\0';
+
+        if (!strcasecmp (k, "uri")) {
+            if ((l->servers = ldap_parse_servers(v)) == NULL) {
+                fatal("error in ldap servers");
+            return FAILURE;
+            }
+
+        }
+        else if (!strcasecmp (k, "base")) { 
+            s = strchr (v, '?');
+            if (s != NULL) {
+                len = s - v;
+                l->u_basedn = malloc (len + 1);
+                strncpy (l->u_basedn, v, len);
+                l->u_basedn[len] = '\0';
+            } else {
+                l->u_basedn = strdup (v);
+            }
+        }
+        else if (!strcasecmp (k, "binddn")) {
+            l->binddn = strdup (v);
+        }
+        else if (!strcasecmp (k, "bindpw")) {
+            l->bindpw = strdup (v);
+        }
+        else if (!strcasecmp (k, "timelimit")) {
+            l->s_timeout.tv_sec = atoi (v);
+                }
+        else if (!strcasecmp (k, "bind_timelimit")) {
+            l->b_timeout.tv_sec = atoi (v);
+        }
+        else if (!strcasecmp (k, "ssl")) {
+            if (!strcasecmp (v, "start_tls"))
+                l->tls = 1;
+        }
+    }
+
+    fclose (lcd);
+    return SUCCESS;
+}
+
+#endif /* WITH_LDAP_PUBKEY */
diff -Naurp openssh-5.4p1/ldapauth.h openssh-5.4p1.oden/ldapauth.h
--- openssh-5.4p1/ldapauth.h	1970-01-01 01:00:00.000000000 +0100
+++ openssh-5.4p1.oden/ldapauth.h	2010-03-08 12:17:30.974381643 +0100
@@ -0,0 +1,124 @@
+/*
+ * $Id: openssh-lpk-4.3p1-0.3.7.patch,v 1.3 2006/04/18 15:29:09 eau Exp $ 
+ */
+
+/*
+ *
+ * Copyright (c) 2005, Eric AUGE <eau@phear.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:
+ *
+ * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+ * 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.
+ * Neither the name of the phear.org 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 COPYRIGHT HOLDERS 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 COPYRIGHT OWNER 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.
+ *
+ *
+ */
+
+#ifndef LDAPAUTH_H
+#define LDAPAUTH_H
+
+#define LDAP_DEPRECATED 1
+
+#include <string.h>
+#include <time.h>
+#include <ldap.h>
+#include <lber.h>
+
+/* tokens in use for config */
+#define _DEFAULT_LPK_TOKEN "UseLPK"
+#define _DEFAULT_SRV_TOKEN "LpkServers"
+#define _DEFAULT_USR_TOKEN "LpkUserDN"
+#define _DEFAULT_GRP_TOKEN "LpkGroupDN"
+#define _DEFAULT_BDN_TOKEN "LpkBindDN"
+#define _DEFAULT_BPW_TOKEN "LpkBindPw"
+#define _DEFAULT_MYG_TOKEN "LpkServerGroup"
+#define _DEFAULT_FIL_TOKEN "LpkFilter"
+#define _DEFAULT_TLS_TOKEN "LpkForceTLS"
+#define _DEFAULT_BTI_TOKEN "LpkBindTimelimit"
+#define _DEFAULT_STI_TOKEN "LpkSearchTimelimit"
+#define _DEFAULT_LDP_TOKEN "LpkLdapConf"
+
+/* default options */
+#define _DEFAULT_LPK_ON 0
+#define _DEFAULT_LPK_SERVERS NULL
+#define _DEFAULT_LPK_UDN NULL
+#define _DEFAULT_LPK_GDN NULL
+#define _DEFAULT_LPK_BINDDN NULL
+#define _DEFAULT_LPK_BINDPW NULL
+#define _DEFAULT_LPK_SGROUP NULL
+#define _DEFAULT_LPK_FILTER NULL
+#define _DEFAULT_LPK_TLS -1
+#define _DEFAULT_LPK_BTIMEOUT 10
+#define _DEFAULT_LPK_STIMEOUT 10
+#define _DEFAULT_LPK_LDP NULL
+
+/* flags */
+#define FLAG_EMPTY	    0x00000000
+#define FLAG_CONNECTED	    0x00000001
+
+/* flag macros */
+#define FLAG_SET_EMPTY(x)		x&=(FLAG_EMPTY)
+#define FLAG_SET_CONNECTED(x)		x|=(FLAG_CONNECTED)
+#define FLAG_SET_DISCONNECTED(x)	x&=~(FLAG_CONNECTED)
+
+/* defines */
+#define FAILURE -1
+#define SUCCESS 0
+#define PUBKEYATTR "sshPublicKey"
+
+/* 
+ *
+ * defined files path 
+ * (should be relocated to pathnames.h,
+ * if one day it's included within the tree) 
+ *
+ */
+#define _PATH_LDAP_CONFIG_FILE "/etc/ldap.conf"
+
+/* structures */
+typedef struct ldap_options {
+    int on;			/* Use it or NOT */
+    LDAP * ld;			/* LDAP file desc */
+    char * servers;		/* parsed servers for ldaplib failover handling */
+    char * u_basedn;		/* user basedn */
+    char * g_basedn;		/* group basedn */
+    char * binddn;		/* binddn */
+    char * bindpw;		/* bind password */
+    char * sgroup;		/* server group */
+    char * fgroup;		/* group filter */
+    char * filter;		/* additional filter */
+    char * l_conf;		/* use ldap.conf */
+    int tls;			/* TLS only */
+    struct timeval b_timeout;   /* bind timeout */
+    struct timeval s_timeout;   /* search timeout */
+    unsigned int flags;		/* misc flags (reconnection, future use?) */
+} ldap_opt_t;
+
+typedef struct ldap_keys {
+    struct berval ** keys;	/* the public keys retrieved */
+    unsigned int num;		/* number of keys */
+} ldap_key_t;
+
+
+/* function headers */
+void ldap_close(ldap_opt_t *);
+int ldap_connect(ldap_opt_t *);
+char * ldap_parse_groups(const char *);
+char * ldap_parse_servers(const char *);
+void ldap_options_print(ldap_opt_t *);
+void ldap_options_free(ldap_opt_t *);
+void ldap_keys_free(ldap_key_t *);
+int ldap_parse_lconf(ldap_opt_t *);
+ldap_key_t * ldap_getuserkey(ldap_opt_t *, const char *);
+int ldap_ismember(ldap_opt_t *, const char *);
+
+#endif
diff -Naurp openssh-5.4p1/lpk-user-example.txt openssh-5.4p1.oden/lpk-user-example.txt
--- openssh-5.4p1/lpk-user-example.txt	1970-01-01 01:00:00.000000000 +0100
+++ openssh-5.4p1.oden/lpk-user-example.txt	2010-03-08 12:17:30.975381130 +0100
@@ -0,0 +1,117 @@
+
+Post to ML -> User Made Quick Install Doc.
+Contribution from John Lane <john@lane.uk.net>
+
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+
+OpenSSH LDAP keystore Patch
+===========================
+
+NOTE: these notes are a transcript of a specific installation
+      they work for me, your specifics may be different!
+      from John Lane March 17th 2005         john@lane.uk.net
+
+This is a patch to OpenSSH 4.0p1 to allow it to obtain users' public keys
+from their LDAP record as an alternative to ~/.ssh/authorized_keys.
+
+(Assuming here that necessary build stuff is in $BUILD)
+
+cd $BUILD/openssh-4.0p1
+patch -Np1 -i $BUILD/openssh-lpk-4.0p1-0.3.patch
+mkdir -p /var/empty &&
+./configure --prefix=/usr --sysconfdir=/etc/ssh \
+    --libexecdir=/usr/sbin --with-md5-passwords --with-pam \
+    --with-libs="-lldap" --with-cppflags="-DWITH_LDAP_PUBKEY"
+Now do.
+make &&
+make install
+
+Add the following config to /etc/ssh/ssh_config
+UseLPK yes
+LpkServers ldap://myhost.mydomain.com
+LpkUserDN  ou=People,dc=mydomain,dc=com
+
+We need to tell sshd about the SSL keys during boot, as root's
+environment does not exist at that time. Edit /etc/rc.d/init.d/sshd.
+Change the startup code from this:
+                echo "Starting SSH Server..."
+                loadproc /usr/sbin/sshd
+                ;;
+to this:
+                echo "Starting SSH Server..."
+                LDAPRC="/root/.ldaprc" loadproc /usr/sbin/sshd
+                ;;
+
+Re-start the sshd daemon:
+/etc/rc.d/init.d/sshd restart
+
+Install the additional LDAP schema
+cp $BUILD/openssh-lpk-0.2.schema  /etc/openldap/schema/openssh.schema
+
+Now add the openSSH LDAP schema to /etc/openldap/slapd.conf:
+Add the following to the end of the existing block of schema includes
+include         /etc/openldap/schema/openssh.schema
+
+Re-start the LDAP server:
+/etc/rc.d/init.d/slapd restart
+
+To add one or more public keys to a user, eg "testuser" :
+ldapsearch -x -W -Z -LLL -b "uid=testuser,ou=People,dc=mydomain,dc=com" -D
+"uid=testuser,ou=People,dc=mydomain,dc=com" > /tmp/testuser
+
+append the following to this /tmp/testuser file
+objectclass: ldapPublicKey
+sshPublicKey: ssh-rsa
+AAAAB3NzaC1yc2EAAAABJQAAAIB3dsrwqXqD7E4zYYrxwdDKBUQxKMioXy9pxFVai64kAPxjU9KS
+qIo7QfkjslfsjflksjfldfkjsldfjLX/5zkzRmT28I5piGzunPv17S89z8XwSsuAoR1t86t+5dlI
+7eZE/gVbn2UQkQq7+kdDTS2yXV6VnC52N/kKLG3ciBkBAw== General Purpose RSA Key
+
+Then do a modify:
+ldapmodify -x -D "uid=testuser,ou=People,dc=mydomain,dc=com" -W -f
+/tmp/testuser -Z
+Enter LDAP Password:
+modifying entry "uid=testuser,ou=People,dc=mydomain,dc=com"
+And check the modify is ok:
+ldapsearch -x -W -Z -b "uid=testuser,ou=People,dc=mydomain,dc=com" -D
+"uid=testuser,ou=People,dc=mydomain,dc=com"
+Enter LDAP Password:
+# extended LDIF
+#
+# LDAPv3
+# base <uid=testuser,ou=People,dc=mydomain,dc=com> with scope sub
+# filter: (objectclass=*)
+# requesting: ALL
+#
+
+# testuser, People, mydomain.com
+dn: uid=testuser,ou=People,dc=mydomain,dc=com
+uid: testuser
+cn: testuser
+objectClass: account
+objectClass: posixAccount
+objectClass: top
+objectClass: shadowAccount
+objectClass: ldapPublicKey
+shadowLastChange: 12757
+shadowMax: 99999
+shadowWarning: 7
+loginShell: /bin/bash
+uidNumber: 9999
+gidNumber: 501
+homeDirectory: /home/testuser
+userPassword:: e1NTSEF9UDgwV1hnM1VjUDRJK0k1YnFiL1d4ZUJObXlZZ3Z3UTU=
+sshPublicKey: ssh-rsa
+AAAAB3NzaC1yc2EAAAABJQAAAIB3dsrwqXqD7E4zYYrxwdDKBUQxKMioXy9pxFVai64kAPxjU9KSqIo7QfkjslfsjflksjfldfkjsldfjLX/5zkzRmT28I5piGzunPv17S89z
+8XwSsuAoR1t86t+5dlI7eZE/gVbn2UQkQq7+kdDTS2yXV6VnC52N/kKLG3ciBkBAw== General Purpose RSA Key
+
+# search result
+search: 3
+result: 0 Success
+
+# numResponses: 2
+# numEntries: 1
+
+Now start a ssh session to user "testuser" from usual ssh client (e.g.
+puTTY). Login should succeed.
+
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
diff -Naurp openssh-5.4p1/Makefile.in openssh-5.4p1.oden/Makefile.in
--- openssh-5.4p1/Makefile.in	2010-02-24 08:18:51.000000000 +0100
+++ openssh-5.4p1.oden/Makefile.in	2010-03-08 12:18:42.727318804 +0100
@@ -90,7 +90,7 @@ SSHDOBJS=sshd.o auth-rhosts.o auth-passw
 	auth-krb5.o \
 	auth2-gss.o gss-serv.o gss-serv-krb5.o \
 	loginrec.o auth-pam.o auth-shadow.o auth-sia.o md5crypt.o \
-	audit.o audit-bsm.o platform.o sftp-server.o sftp-common.o \
+	audit.o audit-bsm.o platform.o ldapauth.o sftp-server.o sftp-common.o \
 	roaming_common.o roaming_serv.o
 
 MANPAGES	= moduli.5.out scp.1.out ssh-add.1.out ssh-agent.1.out ssh-keygen.1.out ssh-keyscan.1.out ssh.1.out sshd.8.out sftp-server.8.out sftp.1.out ssh-rand-helper.8.out ssh-keysign.8.out ssh-pkcs11-helper.8.out sshd_config.5.out ssh_config.5.out
diff -Naurp openssh-5.4p1/openssh-lpk_openldap.schema openssh-5.4p1.oden/openssh-lpk_openldap.schema
--- openssh-5.4p1/openssh-lpk_openldap.schema	1970-01-01 01:00:00.000000000 +0100
+++ openssh-5.4p1.oden/openssh-lpk_openldap.schema	2010-03-08 12:17:30.976381509 +0100
@@ -0,0 +1,19 @@
+#
+# LDAP Public Key Patch schema for use with openssh-ldappubkey
+# Author: Eric AUGE <eau@phear.org>
+# 
+# Based on the proposal of : Mark Ruijter
+#
+
+
+# octetString SYNTAX
+attributetype ( 1.3.6.1.4.1.24552.500.1.1.1.13 NAME 'sshPublicKey' 
+	DESC 'MANDATORY: OpenSSH Public key' 
+	EQUALITY octetStringMatch
+	SYNTAX 1.3.6.1.4.1.1466.115.121.1.40 )
+
+# printableString SYNTAX yes|no
+objectclass ( 1.3.6.1.4.1.24552.500.1.1.2.0 NAME 'ldapPublicKey' SUP top AUXILIARY
+	DESC 'MANDATORY: OpenSSH LPK objectclass'
+	MUST ( sshPublicKey $ uid ) 
+	)
diff -Naurp openssh-5.4p1/openssh-lpk_sun.schema openssh-5.4p1.oden/openssh-lpk_sun.schema
--- openssh-5.4p1/openssh-lpk_sun.schema	1970-01-01 01:00:00.000000000 +0100
+++ openssh-5.4p1.oden/openssh-lpk_sun.schema	2010-03-08 12:17:30.976381509 +0100
@@ -0,0 +1,21 @@
+#
+# LDAP Public Key Patch schema for use with openssh-ldappubkey
+# Author: Eric AUGE <eau@phear.org>
+# 
+# Schema for Sun Directory Server.
+# Based on the original schema, modified by Stefan Fischer.
+#
+
+dn: cn=schema
+
+# octetString SYNTAX
+attributeTypes: ( 1.3.6.1.4.1.24552.500.1.1.1.13 NAME 'sshPublicKey' 
+	DESC 'MANDATORY: OpenSSH Public key' 
+	EQUALITY octetStringMatch
+	SYNTAX 1.3.6.1.4.1.1466.115.121.1.40 )
+
+# printableString SYNTAX yes|no
+objectClasses: ( 1.3.6.1.4.1.24552.500.1.1.2.0 NAME 'ldapPublicKey' SUP top AUXILIARY
+	DESC 'MANDATORY: OpenSSH LPK objectclass'
+	MUST ( sshPublicKey $ uid ) 
+	)
diff -Naurp openssh-5.4p1/README.lpk openssh-5.4p1.oden/README.lpk
--- openssh-5.4p1/README.lpk	1970-01-01 01:00:00.000000000 +0100
+++ openssh-5.4p1.oden/README.lpk	2010-03-08 12:17:30.977381495 +0100
@@ -0,0 +1,267 @@
+OpenSSH LDAP PUBLIC KEY PATCH 
+Copyright (c) 2003 Eric AUGE (eau@phear.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.
+3. The name of the author may not be used to endorse or promote products
+   derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
+
+purposes of this patch:
+
+This patch would help to have authentication centralization policy
+using ssh public key authentication.
+This patch could be an alternative to other "secure" authentication system
+working in a similar way (Kerberos, SecurID, etc...), except the fact 
+that it's based on OpenSSH and its public key abilities.
+
+>> FYI: <<
+'uid': means unix accounts existing on the current server
+'lpkServerGroup:' mean server group configured on the current server ('lpkServerGroup' in sshd_config)
+
+example schema:
+
+
+                                  server1 (uid: eau,rival,toto) (lpkServerGroup: unix)
+                ___________      /
+               /           \ --- - server3 (uid: eau, titi) (lpkServerGroup: unix)
+              | LDAP Server |    \
+	      | eau  ,rival |     server2 (uid: rival, eau) (lpkServerGroup: unix)
+	      | titi ,toto  |
+	      | userx,....  |         server5 (uid: eau)  (lpkServerGroup: mail)
+               \___________/ \       /
+	                       ----- - server4 (uid: eau, rival)  (no group configured)
+			             \
+				        etc...
+
+- WHAT WE NEED :
+
+  * configured LDAP server somewhere on the network (i.e. OpenLDAP)
+  * patched sshd (with this patch ;)
+  * LDAP user(/group) entry (look at users.ldif (& groups.ldif)):
+        User entry:
+	- attached to the 'ldapPublicKey' objectclass
+	- attached to the 'posixAccount' objectclass
+	- with a filled 'sshPublicKey' attribute 
+	Example:
+		dn: uid=eau,ou=users,dc=cuckoos,dc=net
+		objectclass: top
+		objectclass: person
+		objectclass: organizationalPerson
+		objectclass: posixAccount
+		objectclass: ldapPublicKey
+		description: Eric AUGE Account
+		userPassword: blah
+		cn: Eric AUGE
+		sn: Eric AUGE
+		uid: eau
+		uidNumber: 1034
+		gidNumber: 1
+		homeDirectory: /export/home/eau
+		sshPublicKey: ssh-dss AAAAB3...
+		sshPublicKey: ssh-dss AAAAM5...
+
+	Group entry:
+	- attached to the 'posixGroup' objectclass
+	- with a 'cn' groupname attribute
+	- with multiple 'memberUid' attributes filled with usernames allowed in this group
+	Example:
+		# few members
+		dn: cn=unix,ou=groups,dc=cuckoos,dc=net
+		objectclass: top
+		objectclass: posixGroup
+		description: Unix based servers group
+		cn: unix
+		gidNumber: 1002
+		memberUid: eau
+		memberUid: user1
+		memberUid: user2
+
+
+- HOW IT WORKS :
+
+  * without patch
+  If a user wants to authenticate to log in a server the sshd, will first look for authentication method allowed (RSAauth,kerberos,etc..)
+  and if RSAauth and tickets based auth fails, it will fallback to standard password authentication (if enabled).
+
+  * with the patch
+  If a user want to authenticate to log in a server, the sshd will first look for auth method including LDAP pubkey, if the ldappubkey options is enabled.
+  It will do an ldapsearch to get the public key directly from the LDAP instead of reading it from the server filesystem. 
+  (usually in $HOME/.ssh/authorized_keys)
+
+  If groups are enabled, it will also check if the user that wants to login is in the group of the server he is trying to log into.
+  If it fails, it falls back on RSA auth files ($HOME/.ssh/authorized_keys), etc.. and finally to standard password authentication (if enabled).
+
+  7 tokens are added to sshd_config :
+  # here is the new patched ldap related tokens
+  # entries in your LDAP must be posixAccount & strongAuthenticationUser & posixGroup
+  UseLPK yes								# look the pub key into LDAP
+  LpkServers ldap://10.31.32.5/ ldap://10.31.32.4 ldap://10.31.32.3	# which LDAP server for users ? (URL format)
+  LpkUserDN  ou=users,dc=foobar,dc=net					# which base DN for users ?
+  LpkGroupDN ou=groups,dc=foobar,dc=net					# which base DN for groups ? 
+  LpkBindDN cn=manager,dc=foobar,dc=net					# which bind DN ?
+  LpkBindPw asecret							# bind DN credidentials
+  LpkServerGroup agroupname						# the group the server is part of
+
+  Right now i'm using anonymous binding to get public keys, because getting public keys of someone doesn't impersonate him<69> but there is some
+  flaws you have to take care of.
+
+- HOW TO INSERT A USER/KEY INTO AN LDAP ENTRY
+
+  * my way (there is plenty :)
+  - create ldif file (i.e. users.ldif)
+  - cat ~/.ssh/id_dsa.pub OR cat ~/.ssh/id_rsa.pub OR cat ~/.ssh/identity.pub
+  - my way in 4 steps :
+  Example:
+
+  # you add this to the user entry in the LDIF file :
+  [...]
+  objectclass: posixAccount
+  objectclass: ldapPublicKey
+  [...]
+  sshPubliKey: ssh-dss AAAABDh12DDUR2...
+  [...]
+
+  # insert your entry and you're done :)
+  ldapadd -D balblabla -w bleh < file.ldif 
+  
+  all standard options can be present in the 'sshPublicKey' attribute.
+
+- WHY :
+
+  Simply because, i was looking for a way to centralize all sysadmins authentication, easily,  without completely using LDAP 
+  as authentication method (like pam_ldap etc..).  
+  
+  After looking into Kerberos, SecurID, and other centralized secure authentications systems, the use of RSA and LDAP to get 
+  public key for authentication allows us to control who has access to which server (the user needs an account and to be in 'strongAuthenticationUser'
+  objectclass within LDAP and part of the group the SSH server is in). 
+
+  Passwords update are no longer a nightmare for a server farm (key pair passphrase is stored on each user's box and private key is locally encrypted using his passphrase 
+  so each user can change it as much as he wants). 
+
+  Blocking a user account can be done directly from the LDAP (if sshd is using RSAAuth + ldap only).
+
+- RULES :  
+  Entry in the LDAP server must respect 'posixAccount' and 'ldapPublicKey' which are defined in core.schema. 
+  and the additionnal lpk.schema.
+
+  This patch could allow a smooth transition between standard auth (/etc/passwd) and complete LDAP based authentication 
+  (pamldap, nss_ldap, etc..).
+
+  This can be an alternative to other (old?/expensive?) authentication methods (Kerberos/SecurID/..).
+  
+  Referring to schema at the beginning of this file if user 'eau' is only in group 'unix'
+  'eau' would ONLY access 'server1', 'server2', 'server3' AND 'server4' BUT NOT 'server5'.
+  If you then modify the LDAP 'mail' group entry to add 'memberUid: eau' THEN user 'eau' would be able
+  to log in 'server5' (i hope you got the idea, my english is bad :).
+
+  Each server's sshd is patched and configured to ask the public key and the group infos in the LDAP
+  server.
+  When you want to allow a new user to have access to the server parc, you just add him an account on 
+  your servers, you add his public key into his entry on the LDAP server, it's done. 
+
+  Because sshds are looking public keys into the LDAP directly instead of a file ($HOME/.ssh/authorized_keys).
+
+  When the user needs to change his passphrase he can do it directly from his workstation by changing 
+  his own key set lock passphrase, and all servers are automatically aware.
+ 
+  With a CAREFUL LDAP server configuration you could allow a user to add/delete/modify his own entry himself
+  so he can add/modify/delete himself his public key when needed.
+
+<2B> FLAWS :
+  LDAP must be well configured, getting the public key of some user is not a problem, but if anonymous LDAP 
+  allow write to users dn, somebody could replace someuser's public key by its own and impersonate some 
+  of your users in all your server farm be VERY CAREFUL.
+  
+  MITM attack when sshd is requesting the public key, could lead to a compromise of your servers allowing login 
+  as the impersonnated user.
+
+  If LDAP server is down then, fallback on passwd auth.
+  
+  the ldap code part has not been well audited yet.
+
+- LDAP USER ENTRY EXAMPLES (LDIF Format, look in users.ldif)
+    --- CUT HERE ---
+    dn: uid=jdoe,ou=users,dc=foobar,dc=net
+    objectclass: top
+    objectclass: person
+    objectclass: organizationalPerson
+    objectclass: posixAccount
+    objectclass: ldapPublicKey
+    description: My account
+    cn: John Doe
+    sn: John Doe
+    uid: jdoe
+    uidNumber: 100
+    gidNumber: 100
+    homeDirectory: /home/jdoe
+    sshPublicKey: ssh-dss AAAAB3NzaC1kc3MAAAEBAOvL8pREUg9wSy/8+hQJ54YF3AXkB0OZrXB....
+    [...]
+    --- CUT HERE ---
+
+- LDAP GROUP ENTRY EXAMPLES (LDIF Format, look in groups.ldif)
+    --- CUT HERE ---
+    dn: cn=unix,ou=groups,dc=cuckoos,dc=net
+    objectclass: top
+    objectclass: posixGroup
+    description: Unix based servers group
+    cn: unix
+    gidNumber: 1002
+    memberUid: jdoe
+    memberUid: user1
+    memberUid: user2
+    [...]
+    --- CUT HERE ---
+
+>> FYI: << 
+Multiple 'sshPublicKey' in a user entry are allowed, as well as multiple 'memberUid' attributes in a group entry
+
+- COMPILING:
+  1. Apply the patch
+  2. ./configure --with-your-options --with-ldap=/prefix/to/ldap_libs_and_includes
+  3. make
+  4. it's done.
+
+- BLA :
+  I hope this could help, and i hope to be clear enough,, or give ideas.  questions/comments/improvements are welcome.
+  
+- TODO :
+  Redesign differently.
+
+- DOCS/LINK :
+  http://pacsec.jp/core05/psj05-barisani-en.pdf
+  http://fritz.potsdam.edu/projects/openssh-lpk/
+  http://fritz.potsdam.edu/projects/sshgate/
+  http://dev.inversepath.com/trac/openssh-lpk
+  http://lam.sf.net/ ( http://lam.sourceforge.net/documentation/supportedSchemas.htm )
+
+- CONTRIBUTORS/IDEAS/GREETS :
+  - Falk Siemonsmeier.
+  - Jacob Rief.
+  - Michael Durchgraf.
+  - frederic peters.
+  - Finlay dobbie.
+  - Stefan Fisher.
+  - Robin H. Johnson.
+  - Adrian Bridgett.
+
+- CONTACT :
+  - Eric AUGE <eau@phear.org>
+  - Andrea Barisani <andrea@inversepath.com>
diff -Naurp openssh-5.4p1/servconf.c openssh-5.4p1.oden/servconf.c
--- openssh-5.4p1/servconf.c	2010-03-04 11:53:35.000000000 +0100
+++ openssh-5.4p1.oden/servconf.c	2010-03-08 12:21:00.400414534 +0100
@@ -42,6 +42,10 @@
 #include "channels.h"
 #include "groupaccess.h"
 
+#ifdef WITH_LDAP_PUBKEY
+#include "ldapauth.h"
+#endif
+
 static void add_listen_addr(ServerOptions *, char *, int);
 static void add_one_listen_addr(ServerOptions *, char *, int);
 
@@ -131,6 +135,25 @@ initialize_server_options(ServerOptions 
 	options->zero_knowledge_password_authentication = -1;
 	options->revoked_keys_file = NULL;
 	options->trusted_user_ca_keys = NULL;
+#ifdef WITH_LDAP_PUBKEY
+ 	/* XXX dirty */
+ 	options->lpk.ld = NULL;
+ 	options->lpk.on = -1;
+ 	options->lpk.servers = NULL;
+ 	options->lpk.u_basedn = NULL;
+ 	options->lpk.g_basedn = NULL;
+ 	options->lpk.binddn = NULL;
+ 	options->lpk.bindpw = NULL;
+ 	options->lpk.sgroup = NULL;
+ 	options->lpk.filter = NULL;
+ 	options->lpk.fgroup = NULL;
+ 	options->lpk.l_conf = NULL;
+ 	options->lpk.tls = -1;
+ 	options->lpk.b_timeout.tv_sec = -1;
+ 	options->lpk.s_timeout.tv_sec = -1;
+ 	options->lpk.flags = FLAG_EMPTY;
+#endif
+
 }
 
 void
@@ -265,6 +288,32 @@ fill_default_server_options(ServerOption
 		options->permit_tun = SSH_TUNMODE_NO;
 	if (options->zero_knowledge_password_authentication == -1)
 		options->zero_knowledge_password_authentication = 0;
+#ifdef WITH_LDAP_PUBKEY
+	if (options->lpk.on == -1)
+	    options->lpk.on = _DEFAULT_LPK_ON;
+	if (options->lpk.servers == NULL)
+	    options->lpk.servers = _DEFAULT_LPK_SERVERS;
+	if (options->lpk.u_basedn == NULL)
+	    options->lpk.u_basedn = _DEFAULT_LPK_UDN;
+	if (options->lpk.g_basedn == NULL)
+	    options->lpk.g_basedn = _DEFAULT_LPK_GDN;
+	if (options->lpk.binddn == NULL)
+	    options->lpk.binddn = _DEFAULT_LPK_BINDDN;
+	if (options->lpk.bindpw == NULL)
+	    options->lpk.bindpw = _DEFAULT_LPK_BINDPW;
+	if (options->lpk.sgroup == NULL)
+	    options->lpk.sgroup = _DEFAULT_LPK_SGROUP;
+	if (options->lpk.filter == NULL)
+	    options->lpk.filter = _DEFAULT_LPK_FILTER;
+	if (options->lpk.tls == -1)
+	    options->lpk.tls = _DEFAULT_LPK_TLS;
+	if (options->lpk.b_timeout.tv_sec == -1)
+	    options->lpk.b_timeout.tv_sec = _DEFAULT_LPK_BTIMEOUT;
+	if (options->lpk.s_timeout.tv_sec == -1)
+	    options->lpk.s_timeout.tv_sec = _DEFAULT_LPK_STIMEOUT;
+	if (options->lpk.l_conf == NULL)
+	    options->lpk.l_conf = _DEFAULT_LPK_LDP;
+#endif
 
 	/* Turn privilege separation on by default */
 	if (use_privsep == -1)
@@ -312,6 +361,12 @@ typedef enum {
 	sZeroKnowledgePasswordAuthentication, sHostCertificate,
 	sRevokedKeys, sTrustedUserCAKeys,
 	sDeprecated, sUnsupported
+#ifdef WITH_LDAP_PUBKEY
+	,sLdapPublickey, sLdapServers, sLdapUserDN
+	,sLdapGroupDN, sBindDN, sBindPw, sMyGroup
+	,sLdapFilter, sForceTLS, sBindTimeout
+	,sSearchTimeout, sLdapConf
+#endif
 } ServerOpCodes;
 
 #define SSHCFG_GLOBAL	0x01	/* allowed in main section of sshd_config */
@@ -422,6 +477,20 @@ static struct {
 	{ "clientalivecountmax", sClientAliveCountMax, SSHCFG_GLOBAL },
 	{ "authorizedkeysfile", sAuthorizedKeysFile, SSHCFG_GLOBAL },
 	{ "authorizedkeysfile2", sAuthorizedKeysFile2, SSHCFG_GLOBAL },
+#ifdef WITH_LDAP_PUBKEY
+	{ _DEFAULT_LPK_TOKEN, sLdapPublickey, SSHCFG_GLOBAL },
+	{ _DEFAULT_SRV_TOKEN, sLdapServers, SSHCFG_GLOBAL },
+	{ _DEFAULT_USR_TOKEN, sLdapUserDN, SSHCFG_GLOBAL },
+	{ _DEFAULT_GRP_TOKEN, sLdapGroupDN, SSHCFG_GLOBAL },
+	{ _DEFAULT_BDN_TOKEN, sBindDN, SSHCFG_GLOBAL },
+	{ _DEFAULT_BPW_TOKEN, sBindPw, SSHCFG_GLOBAL },
+	{ _DEFAULT_MYG_TOKEN, sMyGroup, SSHCFG_GLOBAL },
+	{ _DEFAULT_FIL_TOKEN, sLdapFilter, SSHCFG_GLOBAL },
+	{ _DEFAULT_TLS_TOKEN, sForceTLS, SSHCFG_GLOBAL },
+	{ _DEFAULT_BTI_TOKEN, sBindTimeout, SSHCFG_GLOBAL },
+	{ _DEFAULT_STI_TOKEN, sSearchTimeout, SSHCFG_GLOBAL },
+	{ _DEFAULT_LDP_TOKEN, sLdapConf, SSHCFG_GLOBAL },
+#endif
 	{ "useprivilegeseparation", sUsePrivilegeSeparation, SSHCFG_GLOBAL},
 	{ "acceptenv", sAcceptEnv, SSHCFG_GLOBAL },
 	{ "permittunnel", sPermitTunnel, SSHCFG_GLOBAL },
@@ -1349,6 +1418,107 @@ process_server_config_line(ServerOptions
 		while (arg)
 		    arg = strdelim(&cp);
 		break;
+#ifdef WITH_LDAP_PUBKEY
+	case sLdapPublickey:
+		intptr = &options->lpk.on;
+		goto parse_flag;
+	case sLdapServers:
+		/* arg = strdelim(&cp); */
+		p = line;
+		while(*p++);
+		arg = p;
+		if (!arg || *arg == '\0')
+		    fatal("%s line %d: missing ldap server",filename,linenum);
+		arg[strlen(arg)] = '\0';
+		if ((options->lpk.servers = ldap_parse_servers(arg)) == NULL)
+		    fatal("%s line %d: error in ldap servers", filename, linenum);
+		memset(arg,0,strlen(arg));
+		break;
+	case sLdapUserDN:
+		arg = cp;
+		if (!arg || *arg == '\0')
+		    fatal("%s line %d: missing ldap server",filename,linenum);
+		arg[strlen(arg)] = '\0';
+		options->lpk.u_basedn = xstrdup(arg);
+		memset(arg,0,strlen(arg));
+		break;
+	case sLdapGroupDN:
+		arg = cp;
+		if (!arg || *arg == '\0')
+		    fatal("%s line %d: missing ldap server",filename,linenum);
+		arg[strlen(arg)] = '\0';
+		options->lpk.g_basedn = xstrdup(arg);
+		memset(arg,0,strlen(arg));
+		break;
+	case sBindDN:
+		arg = cp;
+		if (!arg || *arg == '\0')
+		    fatal("%s line %d: missing binddn",filename,linenum);
+		arg[strlen(arg)] = '\0';
+		options->lpk.binddn = xstrdup(arg);
+		memset(arg,0,strlen(arg));
+		break;
+	case sBindPw:
+		arg = cp;
+		if (!arg || *arg == '\0')
+		    fatal("%s line %d: missing bindpw",filename,linenum);
+		arg[strlen(arg)] = '\0';
+		options->lpk.bindpw = xstrdup(arg);
+		memset(arg,0,strlen(arg));
+		break;
+	case sMyGroup:
+		arg = cp;
+		if (!arg || *arg == '\0')
+		    fatal("%s line %d: missing groupname",filename, linenum);
+		arg[strlen(arg)] = '\0';
+		options->lpk.sgroup = xstrdup(arg);
+		if (options->lpk.sgroup)
+		    options->lpk.fgroup = ldap_parse_groups(options->lpk.sgroup);
+		memset(arg,0,strlen(arg));
+		break;
+	case sLdapFilter:
+		arg = cp;
+		if (!arg || *arg == '\0')
+		    fatal("%s line %d: missing filter",filename, linenum);
+		arg[strlen(arg)] = '\0';
+		options->lpk.filter = xstrdup(arg);
+		memset(arg,0,strlen(arg));
+		break;
+	case sForceTLS:
+		intptr = &options->lpk.tls;
+		arg = strdelim(&cp);
+		if (!arg || *arg == '\0')
+			fatal("%s line %d: missing yes/no argument.",
+			    filename, linenum);
+		value = 0;	/* silence compiler */
+		if (strcmp(arg, "yes") == 0)
+			value = 1;
+		else if (strcmp(arg, "no") == 0)
+			value = 0;
+		else if (strcmp(arg, "try") == 0)
+			value = -1;
+		else
+			fatal("%s line %d: Bad yes/no argument: %s",
+				filename, linenum, arg);
+		if (*intptr == -1)
+			*intptr = value;
+		break;
+	case sBindTimeout:
+		intptr = (int *) &options->lpk.b_timeout.tv_sec;
+		goto parse_int;
+	case sSearchTimeout:
+		intptr = (int *) &options->lpk.s_timeout.tv_sec;
+		goto parse_int;
+		break;
+	case sLdapConf:
+		arg = cp;
+		if (!arg || *arg == '\0')
+		    fatal("%s line %d: missing LpkLdapConf", filename, linenum);
+		arg[strlen(arg)] = '\0';
+		options->lpk.l_conf = xstrdup(arg);
+		memset(arg, 0, strlen(arg));
+		break;
+#endif
 
 	default:
 		fatal("%s line %d: Missing handler for opcode %s (%d)",
diff -Naurp openssh-5.4p1/servconf.h openssh-5.4p1.oden/servconf.h
--- openssh-5.4p1/servconf.h	2010-03-04 11:53:35.000000000 +0100
+++ openssh-5.4p1.oden/servconf.h	2010-03-08 12:17:30.980381555 +0100
@@ -16,6 +16,10 @@
 #ifndef SERVCONF_H
 #define SERVCONF_H
 
+#ifdef WITH_LDAP_PUBKEY
+#include "ldapauth.h"
+#endif
+
 #define MAX_PORTS		256	/* Max # ports. */
 
 #define MAX_ALLOW_USERS		256	/* Max # users on allow list. */
@@ -150,6 +154,9 @@ typedef struct {
 	int	use_pam;		/* Enable auth via PAM */
 
 	int	permit_tun;
+#ifdef WITH_LDAP_PUBKEY
+        ldap_opt_t lpk;
+#endif
 
 	int	num_permitted_opens;
 
diff -Naurp openssh-5.4p1/sshd.c openssh-5.4p1.oden/sshd.c
--- openssh-5.4p1/sshd.c	2010-03-07 13:05:17.000000000 +0100
+++ openssh-5.4p1.oden/sshd.c	2010-03-08 12:17:30.981381500 +0100
@@ -127,6 +127,10 @@ int allow_severity;
 int deny_severity;
 #endif /* LIBWRAP */
 
+#ifdef WITH_LDAP_PUBKEY
+#include "ldapauth.h"
+#endif
+
 #ifndef O_NOCTTY
 #define O_NOCTTY	0
 #endif
@@ -1530,6 +1534,16 @@ main(int ac, char **av)
 		exit(1);
 	}
 
+#ifdef WITH_LDAP_PUBKEY
+    /* ldap_options_print(&options.lpk); */
+    /* XXX initialize/check ldap connection and set *LD */
+    if (options.lpk.on) {
+        if (options.lpk.l_conf && (ldap_parse_lconf(&options.lpk) < 0) )
+            error("[LDAP] could not parse %s", options.lpk.l_conf);
+        if (ldap_connect(&options.lpk) < 0)
+            error("[LDAP] could not initialize ldap connection");
+    }
+#endif
 	debug("sshd version %.100s", SSH_RELEASE);
 
 	/* Store privilege separation user for later use if required. */
diff -Naurp openssh-5.4p1/sshd_config openssh-5.4p1.oden/sshd_config
--- openssh-5.4p1/sshd_config	2009-10-11 12:51:09.000000000 +0200
+++ openssh-5.4p1.oden/sshd_config	2010-03-08 12:17:30.982381546 +0100
@@ -107,6 +107,21 @@
 # no default banner path
 #Banner none
 
+# here are the new patched ldap related tokens
+# entries in your LDAP must have posixAccount & ldapPublicKey objectclass
+#UseLPK yes
+#LpkLdapConf /etc/ldap.conf
+#LpkServers  ldap://10.1.7.1/ ldap://10.1.7.2/
+#LpkUserDN   ou=users,dc=phear,dc=org
+#LpkGroupDN  ou=groups,dc=phear,dc=org
+#LpkBindDN cn=Manager,dc=phear,dc=org
+#LpkBindPw secret
+#LpkServerGroup mail
+#LpkFilter (hostAccess=master.phear.org)
+#LpkForceTLS no
+#LpkSearchTimelimit 3
+#LpkBindTimelimit 3
+
 # override default of no subsystems
 Subsystem	sftp	/usr/libexec/sftp-server
 
diff -Naurp openssh-5.4p1/sshd_config.5 openssh-5.4p1.oden/sshd_config.5
--- openssh-5.4p1/sshd_config.5	2010-03-05 00:41:45.000000000 +0100
+++ openssh-5.4p1.oden/sshd_config.5	2010-03-08 12:17:30.983381553 +0100
@@ -1043,6 +1043,62 @@ Specifies the full pathname of the
 program.
 The default is
 .Pa /usr/X11R6/bin/xauth .
+.It Cm UseLPK
+Specifies whether LDAP public key retrieval must be used or not. It allow
+an easy centralisation of public keys within an LDAP directory. The argument must be
+.Dq yes
+or
+.Dq no .
+.It Cm LpkLdapConf
+Specifies whether LDAP Public keys should parse the specified ldap.conf file
+instead of sshd_config Tokens. The argument must be a valid path to an ldap.conf
+file like
+.Pa /etc/ldap.conf
+.It Cm LpkServers
+Specifies LDAP one or more [:space:] separated server's url the following form may be used:
+.Pp
+LpkServers ldaps://127.0.0.1 ldap://127.0.0.2 ldap://127.0.0.3
+.It Cm LpkUserDN
+Specifies the LDAP user DN.
+.Pp
+LpkUserDN ou=users,dc=phear,dc=org
+.It Cm LpkGroupDN
+Specifies the LDAP groups DN.
+.Pp
+LpkGroupDN ou=groups,dc=phear,dc=org
+.It Cm LpkBindDN
+Specifies the LDAP bind DN to use if necessary.
+.Pp
+LpkBindDN cn=Manager,dc=phear,dc=org
+.It Cm LpkBindPw
+Specifies the LDAP bind credential. 
+.Pp
+LpkBindPw secret
+.It Cm LpkServerGroup
+Specifies one or more [:space:] separated group the server is part of. 
+.Pp
+LpkServerGroup unix mail prod
+.It Cm LpkFilter
+Specifies an additional LDAP filter to use for finding SSH keys
+.Pp
+LpkFilter (hostAccess=master.phear.org)
+.It Cm LpkForceTLS
+Specifies if the LDAP server connection must be tried, forced or not used. The argument must be 
+.Dq yes
+or
+.Dq no
+or
+.Dq try .
+.It Cm LpkSearchTimelimit
+Sepcifies the search time limit before the search is considered over. value is
+in seconds.
+.Pp
+LpkSearchTimelimit 3
+.It Cm LpkBindTimelimit
+Sepcifies the bind time limit before the connection is considered dead. value is
+in seconds.
+.Pp
+LpkBindTimelimit 3
 .El
 .Sh TIME FORMATS
 .Xr sshd 8