8f2528
diff -up openssh-7.4p1/auth2-pubkey.c.keycat openssh-7.4p1/auth2-pubkey.c
8f2528
--- openssh-7.4p1/auth2-pubkey.c.keycat	2017-02-08 14:32:33.015581448 +0100
8f2528
+++ openssh-7.4p1/auth2-pubkey.c	2017-02-08 14:40:26.125216292 +0100
8f2528
@@ -1043,6 +1043,14 @@ user_key_command_allowed2(struct passwd
8f2528
 		xasprintf(&command, "%s %s", av[0], av[1]);
8f2528
 	}
8f2528
 
8f2528
+#ifdef WITH_SELINUX
8f2528
+		if (sshd_selinux_setup_env_variables() < 0) {
8f2528
+			error ("failed to copy environment:  %s",
8f2528
+			    strerror(errno));
8f2528
+			_exit(127);
8f2528
+		}
8f2528
+#endif
8f2528
+
8f2528
 	if ((pid = subprocess("AuthorizedKeysCommand", pw, command,
8f2528
 	    ac, av, &f)) == 0)
8f2528
 		goto out;
8f2528
diff -up openssh-7.4p1/configure.ac.keycat openssh-7.4p1/configure.ac
8f2528
--- openssh-7.4p1/configure.ac.keycat	2017-02-08 14:32:33.011581451 +0100
8f2528
+++ openssh-7.4p1/configure.ac	2017-02-08 14:32:33.016581448 +0100
8f2528
@@ -3129,6 +3129,7 @@ AC_ARG_WITH([pam],
8f2528
 			PAM_MSG="yes"
8f2528
 
8f2528
 			SSHDLIBS="$SSHDLIBS -lpam"
8f2528
+			KEYCATLIBS="$KEYCATLIBS -lpam"
8f2528
 			AC_DEFINE([USE_PAM], [1],
8f2528
 				[Define if you want to enable PAM support])
8f2528
 
8f2528
@@ -3139,6 +3140,7 @@ AC_ARG_WITH([pam],
8f2528
 					;;
8f2528
 				*)
8f2528
 					SSHDLIBS="$SSHDLIBS -ldl"
8f2528
+					KEYCATLIBS="$KEYCATLIBS -ldl"
8f2528
 					;;
8f2528
 				esac
8f2528
 			fi
8f2528
@@ -4255,6 +4257,7 @@ AC_ARG_WITH([selinux],
8f2528
 )
8f2528
 AC_SUBST([SSHLIBS])
8f2528
 AC_SUBST([SSHDLIBS])
8f2528
+AC_SUBST([KEYCATLIBS])
8f2528
 
8f2528
 # Check whether user wants Kerberos 5 support
8f2528
 KRB5_MSG="no"
8f2528
@@ -5206,6 +5209,9 @@ fi
8f2528
 if test ! -z "${SSHLIBS}"; then
8f2528
 echo "          +for ssh: ${SSHLIBS}"
8f2528
 fi
8f2528
+if test ! -z "${KEYCATLIBS}"; then
8f2528
+echo "   +for ssh-keycat: ${KEYCATLIBS}"
8f2528
+fi
8f2528
 
8f2528
 echo ""
8f2528
 
8f2528
diff -up openssh-7.4p1/HOWTO.ssh-keycat.keycat openssh-7.4p1/HOWTO.ssh-keycat
8f2528
--- openssh-7.4p1/HOWTO.ssh-keycat.keycat	2017-02-08 14:32:33.014581449 +0100
8f2528
+++ openssh-7.4p1/HOWTO.ssh-keycat	2017-02-08 14:32:33.014581449 +0100
8f2528
@@ -0,0 +1,12 @@
8f2528
+The ssh-keycat retrieves the content of the ~/.ssh/authorized_keys
8f2528
+of an user in any environment. This includes environments with
8f2528
+polyinstantiation of home directories and SELinux MLS policy enabled.
8f2528
+
8f2528
+To use ssh-keycat, set these options in /etc/ssh/sshd_config file:
8f2528
+        AuthorizedKeysCommand /usr/libexec/openssh/ssh-keycat
8f2528
+        AuthorizedKeysCommandUser root
8f2528
+
8f2528
+Do not forget to enable public key authentication:
8f2528
+        PubkeyAuthentication yes
8f2528
+
8f2528
+
8f2528
diff -up openssh-7.4p1/Makefile.in.keycat openssh-7.4p1/Makefile.in
8f2528
--- openssh-7.4p1/Makefile.in.keycat	2017-02-08 14:32:33.012581451 +0100
8f2528
+++ openssh-7.4p1/Makefile.in	2017-02-08 14:38:28.839306815 +0100
8f2528
@@ -27,6 +27,7 @@ SFTP_SERVER=$(libexecdir)/sftp-server
8f2528
 SSH_KEYSIGN=$(libexecdir)/ssh-keysign
8f2528
 SSH_LDAP_HELPER=$(libexecdir)/ssh-ldap-helper
8f2528
 SSH_LDAP_WRAPPER=$(libexecdir)/ssh-ldap-wrapper
8f2528
+SSH_KEYCAT=$(libexecdir)/ssh-keycat
8f2528
 SSH_PKCS11_HELPER=$(libexecdir)/ssh-pkcs11-helper
8f2528
 PRIVSEP_PATH=@PRIVSEP_PATH@
8f2528
 SSH_PRIVSEP_USER=@SSH_PRIVSEP_USER@
8f2528
@@ -51,6 +52,7 @@ K5LIBS=@K5LIBS@
8f2528
 GSSLIBS=@GSSLIBS@
8f2528
 SSHLIBS=@SSHLIBS@
8f2528
 SSHDLIBS=@SSHDLIBS@
8f2528
+KEYCATLIBS=@KEYCATLIBS@
8f2528
 LIBEDIT=@LIBEDIT@
8f2528
 AR=@AR@
8f2528
 AWK=@AWK@
8f2528
@@ -65,7 +67,7 @@ EXEEXT=@EXEEXT@
8f2528
 MANFMT=@MANFMT@
8f2528
 INSTALL_SSH_LDAP_HELPER=@INSTALL_SSH_LDAP_HELPER@
8f2528
 
8f2528
-TARGETS=ssh$(EXEEXT) sshd$(EXEEXT) ssh-add$(EXEEXT) ssh-keygen$(EXEEXT) ssh-keyscan${EXEEXT} ssh-keysign${EXEEXT} ssh-pkcs11-helper$(EXEEXT) ssh-agent$(EXEEXT) scp$(EXEEXT) sftp-server$(EXEEXT) sftp$(EXEEXT) ssh-ldap-helper$(EXEEXT)
8f2528
+TARGETS=ssh$(EXEEXT) sshd$(EXEEXT) ssh-add$(EXEEXT) ssh-keygen$(EXEEXT) ssh-keyscan${EXEEXT} ssh-keysign${EXEEXT} ssh-pkcs11-helper$(EXEEXT) ssh-agent$(EXEEXT) scp$(EXEEXT) sftp-server$(EXEEXT) sftp$(EXEEXT) ssh-ldap-helper$(EXEEXT) ssh-keycat$(EXEEXT)
8f2528
 
8f2528
 LIBOPENSSH_OBJS=\
8f2528
 	ssh_api.o \
8f2528
@@ -190,6 +192,9 @@ ssh-pkcs11-helper$(EXEEXT): $(LIBCOMPAT)
8f2528
 ssh-ldap-helper$(EXEEXT): $(LIBCOMPAT) libssh.a ldapconf.o ldapbody.o ldapmisc.o ldap-helper.o
8f2528
 	$(LD) -o $@ ldapconf.o ldapbody.o ldapmisc.o ldap-helper.o $(LDFLAGS) -lssh -lopenbsd-compat -lssh -lopenbsd-compat -lfipscheck $(LIBS)
8f2528
 
8f2528
+ssh-keycat$(EXEEXT): $(LIBCOMPAT) $(SSHDOBJS) libssh.a ssh-keycat.o
8f2528
+	$(LD) -o $@ ssh-keycat.o bufaux.o $(LDFLAGS) -lssh -lopenbsd-compat -lfipscheck $(KEYCATLIBS) $(SSHLIBS)
8f2528
+
8f2528
 ssh-keyscan$(EXEEXT): $(LIBCOMPAT) libssh.a ssh-keyscan.o
8f2528
 	$(LD) -o $@ ssh-keyscan.o $(LDFLAGS) -lssh -lopenbsd-compat -lssh $(LIBS)
8f2528
 
8f2528
@@ -332,6 +337,7 @@ install-files:
8f2528
 		$(INSTALL) -m 0700 $(STRIP_OPT) ssh-ldap-helper $(DESTDIR)$(SSH_LDAP_HELPER) ; \
8f2528
 		$(INSTALL) -m 0700 ssh-ldap-wrapper $(DESTDIR)$(SSH_LDAP_WRAPPER) ; \
8f2528
 	fi
8f2528
+	$(INSTALL) -m 0755 $(STRIP_OPT) ssh-keycat$(EXEEXT) $(DESTDIR)$(libexecdir)/ssh-keycat$(EXEEXT)
8f2528
 	$(INSTALL) -m 0755 $(STRIP_OPT) sftp$(EXEEXT) $(DESTDIR)$(bindir)/sftp$(EXEEXT)
8f2528
 	$(INSTALL) -m 0755 $(STRIP_OPT) sftp-server$(EXEEXT) $(DESTDIR)$(SFTP_SERVER)$(EXEEXT)
8f2528
 	$(INSTALL) -m 644 ssh.1.out $(DESTDIR)$(mandir)/$(mansubdir)1/ssh.1
8f2528
diff -up openssh-7.4p1/openbsd-compat/port-linux.h.keycat openssh-7.4p1/openbsd-compat/port-linux.h
8f2528
--- openssh-7.4p1/openbsd-compat/port-linux.h.keycat	2017-02-08 14:32:33.009581453 +0100
8f2528
+++ openssh-7.4p1/openbsd-compat/port-linux.h	2017-02-08 14:32:33.015581448 +0100
8f2528
@@ -23,8 +23,10 @@ void ssh_selinux_setup_pty(char *, const
8f2528
 void ssh_selinux_change_context(const char *);
8f2528
 void ssh_selinux_setfscreatecon(const char *);
8f2528
 
8f2528
+int sshd_selinux_enabled(void);
8f2528
 void sshd_selinux_copy_context(void);
8f2528
 void sshd_selinux_setup_exec_context(char *);
8f2528
+int sshd_selinux_setup_env_variables(void);
8f2528
 #endif
8f2528
 
8f2528
 #ifdef LINUX_OOM_ADJUST
8f2528
diff -up openssh-7.4p1/openbsd-compat/port-linux-sshd.c.keycat openssh-7.4p1/openbsd-compat/port-linux-sshd.c
8f2528
--- openssh-7.4p1/openbsd-compat/port-linux-sshd.c.keycat	2017-02-08 14:32:33.008581454 +0100
8f2528
+++ openssh-7.4p1/openbsd-compat/port-linux-sshd.c	2017-02-08 14:32:33.015581448 +0100
8f2528
@@ -53,6 +53,20 @@ extern Authctxt *the_authctxt;
8f2528
 extern int inetd_flag;
8f2528
 extern int rexeced_flag;
8f2528
 
8f2528
+/* Wrapper around is_selinux_enabled() to log its return value once only */
8f2528
+int
8f2528
+sshd_selinux_enabled(void)
8f2528
+{
8f2528
+	static int enabled = -1;
8f2528
+
8f2528
+	if (enabled == -1) {
8f2528
+		enabled = (is_selinux_enabled() == 1);
8f2528
+		debug("SELinux support %s", enabled ? "enabled" : "disabled");
8f2528
+	}
8f2528
+
8f2528
+	return (enabled);
8f2528
+}
8f2528
+
8f2528
 /* Send audit message */
8f2528
 static int
8f2528
 sshd_selinux_send_audit_message(int success, security_context_t default_context,
8f2528
@@ -307,7 +321,7 @@ sshd_selinux_getctxbyname(char *pwname,
8f2528
 
8f2528
 /* Setup environment variables for pam_selinux */
8f2528
 static int
8f2528
-sshd_selinux_setup_pam_variables(void)
8f2528
+sshd_selinux_setup_variables(int(*set_it)(char *, const char *))
8f2528
 {
8f2528
 	const char *reqlvl;
8f2528
 	char *role;
8f2528
@@ -318,16 +332,16 @@ sshd_selinux_setup_pam_variables(void)
8f2528
 
8f2528
 	ssh_selinux_get_role_level(&role, &reqlvl);
8f2528
 
8f2528
-	rv = do_pam_putenv("SELINUX_ROLE_REQUESTED", role ? role : "");
8f2528
+	rv = set_it("SELINUX_ROLE_REQUESTED", role ? role : "");
8f2528
 
8f2528
 	if (inetd_flag && !rexeced_flag) {
8f2528
 		use_current = "1";
8f2528
 	} else {
8f2528
 		use_current = "";
8f2528
-		rv = rv || do_pam_putenv("SELINUX_LEVEL_REQUESTED", reqlvl ? reqlvl: "");
8f2528
+		rv = rv || set_it("SELINUX_LEVEL_REQUESTED", reqlvl ? reqlvl: "");
8f2528
 	}
8f2528
 
8f2528
-	rv = rv || do_pam_putenv("SELINUX_USE_CURRENT_RANGE", use_current);
8f2528
+	rv = rv || set_it("SELINUX_USE_CURRENT_RANGE", use_current);
8f2528
 
8f2528
 	if (role != NULL)
8f2528
 		free(role);
8f2528
@@ -335,6 +349,24 @@ sshd_selinux_setup_pam_variables(void)
8f2528
 	return rv;
8f2528
 }
8f2528
 
8f2528
+static int
8f2528
+sshd_selinux_setup_pam_variables(void)
8f2528
+{
8f2528
+	return sshd_selinux_setup_variables(do_pam_putenv);
8f2528
+}
8f2528
+
8f2528
+static int
8f2528
+do_setenv(char *name, const char *value)
8f2528
+{
8f2528
+	return setenv(name, value, 1);
8f2528
+}
8f2528
+
8f2528
+int
8f2528
+sshd_selinux_setup_env_variables(void)
8f2528
+{
8f2528
+	return sshd_selinux_setup_variables(do_setenv);
8f2528
+}
8f2528
+
8f2528
 /* Set the execution context to the default for the specified user */
8f2528
 void
8f2528
 sshd_selinux_setup_exec_context(char *pwname)
8f2528
@@ -343,7 +375,7 @@ sshd_selinux_setup_exec_context(char *pw
8f2528
 	int r = 0;
8f2528
 	security_context_t default_ctx = NULL;
8f2528
 
8f2528
-	if (!ssh_selinux_enabled())
8f2528
+	if (!sshd_selinux_enabled())
8f2528
 		return;
8f2528
 
8f2528
 	if (options.use_pam) {
8f2528
@@ -414,7 +446,7 @@ sshd_selinux_copy_context(void)
8f2528
 {
8f2528
 	security_context_t *ctx;
8f2528
 
8f2528
-	if (!ssh_selinux_enabled())
8f2528
+	if (!sshd_selinux_enabled())
8f2528
 		return;
8f2528
 
8f2528
 	if (getexeccon((security_context_t *)&ctx) != 0) {
8f2528
diff -up openssh-7.4p1/platform.c.keycat openssh-7.4p1/platform.c
8f2528
--- openssh-7.4p1/platform.c.keycat	2017-02-08 14:32:33.007581455 +0100
8f2528
+++ openssh-7.4p1/platform.c	2017-02-08 14:32:33.015581448 +0100
8f2528
@@ -99,7 +99,7 @@ platform_setusercontext(struct passwd *p
8f2528
 {
8f2528
 #ifdef WITH_SELINUX
8f2528
 	/* Cache selinux status for later use */
8f2528
-	(void)ssh_selinux_enabled();
8f2528
+	(void)sshd_selinux_enabled();
8f2528
 #endif
8f2528
 
8f2528
 #ifdef USE_SOLARIS_PROJECTS
8f2528
diff -up openssh-7.4p1/ssh-keycat.c.keycat openssh-7.4p1/ssh-keycat.c
8f2528
--- openssh-7.4p1/ssh-keycat.c.keycat	2017-02-08 14:32:33.015581448 +0100
8f2528
+++ openssh-7.4p1/ssh-keycat.c	2017-02-08 14:32:33.015581448 +0100
8f2528
@@ -0,0 +1,238 @@
8f2528
+/*
8f2528
+ * Redistribution and use in source and binary forms, with or without
8f2528
+ * modification, are permitted provided that the following conditions
8f2528
+ * are met:
8f2528
+ * 1. Redistributions of source code must retain the above copyright
8f2528
+ *    notice, and the entire permission notice in its entirety,
8f2528
+ *    including the disclaimer of warranties.
8f2528
+ * 2. Redistributions in binary form must reproduce the above copyright
8f2528
+ *    notice, this list of conditions and the following disclaimer in the
8f2528
+ *    documentation and/or other materials provided with the distribution.
8f2528
+ * 3. The name of the author may not be used to endorse or promote
8f2528
+ *    products derived from this software without specific prior
8f2528
+ *    written permission.
8f2528
+ *
8f2528
+ * ALTERNATIVELY, this product may be distributed under the terms of
8f2528
+ * the GNU Public License, in which case the provisions of the GPL are
8f2528
+ * required INSTEAD OF the above restrictions.  (This clause is
8f2528
+ * necessary due to a potential bad interaction between the GPL and
8f2528
+ * the restrictions contained in a BSD-style copyright.)
8f2528
+ *
8f2528
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
8f2528
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
8f2528
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
8f2528
+ * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
8f2528
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
8f2528
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
8f2528
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
8f2528
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
8f2528
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
8f2528
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
8f2528
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
8f2528
+ */
8f2528
+
8f2528
+/*
8f2528
+ * Copyright (c) 2011 Red Hat, Inc.
8f2528
+ * Written by Tomas Mraz <tmraz@redhat.com>
8f2528
+*/
8f2528
+
8f2528
+#define _GNU_SOURCE
8f2528
+
8f2528
+#include "config.h"
8f2528
+#include <stdio.h>
8f2528
+#include <stdlib.h>
8f2528
+#include <string.h>
8f2528
+#include <sys/types.h>
8f2528
+#include <sys/stat.h>
8f2528
+#include <pwd.h>
8f2528
+#include <fcntl.h>
8f2528
+#include <unistd.h>
8f2528
+
8f2528
+#include <security/pam_appl.h>
8f2528
+
8f2528
+#include "uidswap.h"
8f2528
+#include "misc.h"
8f2528
+
8f2528
+#define ERR_USAGE 1
8f2528
+#define ERR_PAM_START 2
8f2528
+#define ERR_OPEN_SESSION 3
8f2528
+#define ERR_CLOSE_SESSION 4
8f2528
+#define ERR_PAM_END 5
8f2528
+#define ERR_GETPWNAM 6
8f2528
+#define ERR_MEMORY 7
8f2528
+#define ERR_OPEN 8
8f2528
+#define ERR_FILE_MODE 9
8f2528
+#define ERR_FDOPEN 10
8f2528
+#define ERR_STAT 11
8f2528
+#define ERR_WRITE 12
8f2528
+#define ERR_PAM_PUTENV 13
8f2528
+#define BUFLEN 4096
8f2528
+
8f2528
+/* Just ignore the messages in the conversation function */
8f2528
+static int
8f2528
+dummy_conv(int num_msg, const struct pam_message **msgm,
8f2528
+	   struct pam_response **response, void *appdata_ptr)
8f2528
+{
8f2528
+	struct pam_response *rsp;
8f2528
+
8f2528
+	(void)msgm;
8f2528
+	(void)appdata_ptr;
8f2528
+
8f2528
+	if (num_msg <= 0)
8f2528
+		return PAM_CONV_ERR;
8f2528
+
8f2528
+	/* Just allocate the array as empty responses */
8f2528
+	rsp = calloc (num_msg, sizeof (struct pam_response));
8f2528
+	if (rsp == NULL)
8f2528
+		return PAM_CONV_ERR;
8f2528
+
8f2528
+	*response = rsp;
8f2528
+	return PAM_SUCCESS;
8f2528
+}
8f2528
+
8f2528
+static struct pam_conv conv = {
8f2528
+	dummy_conv,
8f2528
+	NULL
8f2528
+};
8f2528
+
8f2528
+char *
8f2528
+make_auth_keys_name(const struct passwd *pwd)
8f2528
+{
8f2528
+	char *fname;
8f2528
+
8f2528
+	if (asprintf(&fname, "%s/.ssh/authorized_keys", pwd->pw_dir) < 0)
8f2528
+		return NULL;
8f2528
+
8f2528
+	return fname;
8f2528
+}
8f2528
+
8f2528
+int
8f2528
+dump_keys(const char *user)
8f2528
+{
8f2528
+	struct passwd *pwd;
8f2528
+	int fd = -1;
8f2528
+	FILE *f = NULL;
8f2528
+	char *fname = NULL;
8f2528
+	int rv = 0;
8f2528
+	char buf[BUFLEN];
8f2528
+	size_t len;
8f2528
+	struct stat st;
8f2528
+
8f2528
+	if ((pwd = getpwnam(user)) == NULL) {
8f2528
+		return ERR_GETPWNAM;
8f2528
+	}
8f2528
+
8f2528
+	if ((fname = make_auth_keys_name(pwd)) == NULL) {
8f2528
+		return ERR_MEMORY;
8f2528
+	}
8f2528
+
8f2528
+	temporarily_use_uid(pwd);
8f2528
+
8f2528
+	if ((fd = open(fname, O_RDONLY|O_NONBLOCK|O_NOFOLLOW, 0)) < 0) {
8f2528
+		rv = ERR_OPEN;
8f2528
+		goto fail;
8f2528
+	}
8f2528
+
8f2528
+	if (fstat(fd, &st) < 0) {
8f2528
+		rv = ERR_STAT;
8f2528
+		goto fail;
8f2528
+	}
8f2528
+
8f2528
+	if (!S_ISREG(st.st_mode) || 
8f2528
+		(st.st_uid != pwd->pw_uid && st.st_uid != 0)) {
8f2528
+		rv = ERR_FILE_MODE;
8f2528
+		goto fail;
8f2528
+	}
8f2528
+
8f2528
+	unset_nonblock(fd);
8f2528
+
8f2528
+	if ((f = fdopen(fd, "r")) == NULL) {
8f2528
+		rv = ERR_FDOPEN;
8f2528
+		goto fail;
8f2528
+	}
8f2528
+
8f2528
+	fd = -1;
8f2528
+
8f2528
+	while ((len = fread(buf, 1, sizeof(buf), f)) > 0) {
8f2528
+		rv = fwrite(buf, 1, len, stdout) != len ? ERR_WRITE : 0;
8f2528
+	}
8f2528
+
8f2528
+fail:
8f2528
+	if (fd != -1)
8f2528
+		close(fd);
8f2528
+	if (f != NULL)
8f2528
+		fclose(f);
8f2528
+	free(fname);
8f2528
+	restore_uid();
8f2528
+	return rv;
8f2528
+}
8f2528
+
8f2528
+static const char *env_names[] = { "SELINUX_ROLE_REQUESTED",
8f2528
+	"SELINUX_LEVEL_REQUESTED",
8f2528
+	"SELINUX_USE_CURRENT_RANGE"
8f2528
+};
8f2528
+
8f2528
+extern char **environ;
8f2528
+
8f2528
+int
8f2528
+set_pam_environment(pam_handle_t *pamh)
8f2528
+{
8f2528
+	int i;
8f2528
+	size_t j;
8f2528
+
8f2528
+	for (j = 0; j < sizeof(env_names)/sizeof(env_names[0]); ++j) {
8f2528
+		int len = strlen(env_names[j]);
8f2528
+
8f2528
+		for (i = 0; environ[i] != NULL; ++i) {
8f2528
+			if (strncmp(env_names[j], environ[i], len) == 0 &&
8f2528
+			    environ[i][len] == '=') {
8f2528
+				if (pam_putenv(pamh, environ[i]) != PAM_SUCCESS)
8f2528
+					return ERR_PAM_PUTENV;
8f2528
+			}
8f2528
+		}
8f2528
+	}
8f2528
+
8f2528
+	return 0;
8f2528
+}
8f2528
+
8f2528
+int
8f2528
+main(int argc, char *argv[])
8f2528
+{
8f2528
+	pam_handle_t *pamh = NULL;
8f2528
+	int retval;
8f2528
+	int ev = 0;
8f2528
+
8f2528
+	if (argc != 2) {
8f2528
+		fprintf(stderr, "Usage: %s <user-name>\n", argv[0]);
8f2528
+		return ERR_USAGE;
8f2528
+	}
8f2528
+
8f2528
+	retval = pam_start("ssh-keycat", argv[1], &conv, &pamh);
8f2528
+	if (retval != PAM_SUCCESS) {
8f2528
+		return ERR_PAM_START;
8f2528
+	}
8f2528
+
8f2528
+	ev = set_pam_environment(pamh);
8f2528
+	if (ev != 0)
8f2528
+		goto finish;
8f2528
+
8f2528
+	retval = pam_open_session(pamh, PAM_SILENT);
8f2528
+	if (retval != PAM_SUCCESS) {
8f2528
+		ev = ERR_OPEN_SESSION;
8f2528
+		goto finish;
8f2528
+	}
8f2528
+
8f2528
+	ev = dump_keys(argv[1]);
8f2528
+
8f2528
+	retval = pam_close_session(pamh, PAM_SILENT);
8f2528
+	if (retval != PAM_SUCCESS) {
8f2528
+		ev = ERR_CLOSE_SESSION;
8f2528
+	}
8f2528
+
8f2528
+finish:
8f2528
+	retval = pam_end (pamh,retval);
8f2528
+	if (retval != PAM_SUCCESS) {
8f2528
+		ev = ERR_PAM_END;
8f2528
+	}
8f2528
+	return ev;
8f2528
+}