INSTALL_SSH_PRNG_CMDS=@INSTALL_SSH_PRNG_CMDS@
INSTALL_SSH_RAND_HELPER=@INSTALL_SSH_RAND_HELPER@
+INSTALL_GSISSH=@INSTALL_GSISSH@
TARGETS=ssh$(EXEEXT) sshd$(EXEEXT) ssh-add$(EXEEXT) ssh-keygen$(EXEEXT) ssh-keyscan${EXEEXT} ssh-keysign${EXEEXT} ssh-agent$(EXEEXT) scp$(EXEEXT) ssh-rand-helper${EXEEXT} sftp-server$(EXEEXT) sftp$(EXEEXT)
atomicio.o key.o dispatch.o kex.o mac.o uidswap.o uuencode.o misc.o \
monitor_fdpass.o rijndael.o ssh-dss.o ssh-rsa.o dh.o kexdh.o \
kexgex.o kexdhc.o kexgexc.o scard.o msg.o progressmeter.o dns.o \
- kexgssc.o \
- entropy.o scard-opensc.o gss-genr.o umac.o jpake.o schnorr.o
+ entropy.o scard-opensc.o gss-genr.o umac.o jpake.o schnorr.o \
+ kexgssc.o
SSHOBJS= ssh.o readconf.o clientloop.o sshtty.o \
sshconnect.o sshconnect1.o sshconnect2.o mux.o
auth2-none.o auth2-passwd.o auth2-pubkey.o auth2-jpake.o \
monitor_mm.o monitor.o monitor_wrap.o kexdhs.o kexgexs.o \
auth-krb5.o \
- auth2-gss.o gss-serv.o gss-serv-krb5.o \
- kexgsss.o \
+ auth2-gss.o gss-serv.o gss-serv-krb5.o kexgsss.o\
+ gss-serv-gsi.o \
loginrec.o auth-pam.o auth-shadow.o auth-sia.o md5crypt.o \
audit.o audit-bsm.o platform.o sftp-server.o sftp-common.o
ln -s ./ssh$(EXEEXT) $(DESTDIR)$(bindir)/slogin
-rm -f $(DESTDIR)$(mandir)/$(mansubdir)1/slogin.1
ln -s ./ssh.1 $(DESTDIR)$(mandir)/$(mansubdir)1/slogin.1
+ if [ ! -z "$(INSTALL_GSISSH)" ]; then \
+ rm -f $(DESTDIR)$(bindir)/gsissh; \
+ ln -s ./ssh$(EXEEXT) $(DESTDIR)$(bindir)/gsissh; \
+ rm -f $(DESTDIR)$(mandir)/$(mansubdir)1/gsissh.1; \
+ ln -s ./ssh.1 $(DESTDIR)$(mandir)/$(mansubdir)1/gsissh.1; \
+ rm -f $(DESTDIR)$(bindir)/gsiscp; \
+ ln -s ./scp$(EXEEXT) $(DESTDIR)$(bindir)/gsiscp; \
+ rm -f $(DESTDIR)$(mandir)/$(mansubdir)1/gsiscp.1; \
+ ln -s ./scp.1 $(DESTDIR)$(mandir)/$(mansubdir)1/gsiscp.1; \
+ rm -f $(DESTDIR)$(bindir)/gsisftp; \
+ ln -s ./sftp$(EXEEXT) $(DESTDIR)$(bindir)/gsisftp; \
+ rm -f $(DESTDIR)$(mandir)/$(mansubdir)1/gsisftp.1; \
+ ln -s ./sftp.1 $(DESTDIR)$(mandir)/$(mansubdir)1/gsisftp.1; \
+ fi
install-sysconf:
if [ ! -d $(DESTDIR)$(sysconfdir) ]; then \
uninstall:
-rm -f $(DESTDIR)$(bindir)/slogin
+ if [ ! -z "$(INSTALL_GSISSH)" ]; then \
+ rm -f $(DESTDIR)$(bindir)/gsiscp; \
+ rm -f $(DESTDIR)$(bindir)/gsissh; \
+ rm -f $(DESTDIR)$(bindir)/gsisftp; \
+ fi
-rm -f $(DESTDIR)$(bindir)/ssh$(EXEEXT)
-rm -f $(DESTDIR)$(bindir)/scp$(EXEEXT)
-rm -f $(DESTDIR)$(bindir)/ssh-add$(EXEEXT)
-rm -f $(DESTDIR)$(RAND_HELPER)$(EXEEXT)
-rm -f $(DESTDIR)$(mandir)/$(mansubdir)1/ssh.1
-rm -f $(DESTDIR)$(mandir)/$(mansubdir)1/scp.1
+ if [ ! -z "$(INSTALL_GSISSH)" ]; then \
+ rm -f $(DESTDIR)$(mandir)/$(mansubdir)1/gsissh.1; \
+ rm -f $(DESTDIR)$(mandir)/$(mansubdir)1/gsiscp.1; \
+ rm -f $(DESTDIR)$(mandir)/$(mansubdir)1/gsisftp.1; \
+ fi
-rm -f $(DESTDIR)$(mandir)/$(mansubdir)1/ssh-add.1
-rm -f $(DESTDIR)$(mandir)/$(mansubdir)1/ssh-agent.1
-rm -f $(DESTDIR)$(mandir)/$(mansubdir)1/ssh-keygen.1
/* $OpenBSD: auth2-gss.c,v 1.16 2007/10/29 00:52:45 dtucker Exp $ */
/*
- * Copyright (c) 2001-2003 Simon Wilkinson. All rights reserved.
+ * Copyright (c) 2001-2007 Simon Wilkinson. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
extern ServerOptions options;
+static void ssh_gssapi_userauth_error(Gssctxt *ctxt);
static void input_gssapi_token(int type, u_int32_t plen, void *ctxt);
static void input_gssapi_mic(int type, u_int32_t plen, void *ctxt);
static void input_gssapi_exchange_complete(int type, u_int32_t plen, void *ctxt);
static void input_gssapi_errtok(int, u_int32_t, void *);
- return(PRIVSEP(ssh_gssapi_userok(authctxt->user)));
+static int gssapi_with_mic = 1; /* flag to toggle "gssapi-with-mic" vs.
+ "gssapi" */
+
+static int
+userauth_external(Authctxt *authctxt)
+{
+ packet_check_eom();
+
+ if (authctxt->valid && authctxt->user && authctxt->user[0]) {
++ return(PRIVSEP(ssh_gssapi_userok(authctxt->user, authctxt->pw)));
+ }
+ return 0;
+}
+
/*
* The 'gssapi_keyex' userauth mechanism.
*/
userauth_gsskeyex(Authctxt *authctxt)
{
int authenticated = 0;
- Buffer b;
- gss_buffer_desc mic, gssbuf;
+ Buffer b, b2;
+ gss_buffer_desc mic, gssbuf, gssbuf2;
u_int len;
mic.value = packet_get_string(&len);
gssbuf.value = buffer_ptr(&b);
gssbuf.length = buffer_len(&b);
+ /* client may have used empty username to determine target
+ name from GSSAPI context */
+ ssh_gssapi_buildmic(&b2, "", authctxt->service, "gssapi-keyex");
+
+ gssbuf2.value = buffer_ptr(&b2);
+ gssbuf2.length = buffer_len(&b2);
+
/* gss_kex_context is NULL with privsep, so we can't check it here */
if (!GSS_ERROR(PRIVSEP(ssh_gssapi_checkmic(gss_kex_context,
- &gssbuf, &mic))))
- authenticated = PRIVSEP(ssh_gssapi_userok(authctxt->user,
- authctxt->pw));
+ &gssbuf, &mic))) ||
+ !GSS_ERROR(PRIVSEP(ssh_gssapi_checkmic(gss_kex_context,
+ &gssbuf2, &mic)))) {
+ if (authctxt->valid && authctxt->user && authctxt->user[0]) {
- authenticated = PRIVSEP(ssh_gssapi_userok(authctxt->user));
++ authenticated = PRIVSEP(ssh_gssapi_userok(authctxt->user,
++ authctxt->pw));
+ }
+ }
buffer_free(&b);
+ buffer_free(&b2);
xfree(mic.value);
return (authenticated);
u_int len;
u_char *doid = NULL;
- if (!authctxt->valid || authctxt->user == NULL)
+ /* authctxt->valid may be 0 if we haven't yet determined
+ username from gssapi context. */
+
+ if (authctxt->user == NULL)
return (0);
mechs = packet_get_int();
Gssctxt *gssctxt;
gss_buffer_desc send_tok = GSS_C_EMPTY_BUFFER;
gss_buffer_desc recv_tok;
- OM_uint32 maj_status, min_status, flags;
+ OM_uint32 maj_status, min_status, flags=0;
u_int len;
if (authctxt == NULL || (authctxt->methoddata == NULL && !use_privsep))
xfree(recv_tok.value);
if (GSS_ERROR(maj_status)) {
+ ssh_gssapi_userauth_error(gssctxt);
if (send_tok.length != 0) {
packet_start(SSH2_MSG_USERAUTH_GSSAPI_ERRTOK);
packet_put_string(send_tok.value, send_tok.length);
}
authctxt->postponed = 0;
dispatch_set(SSH2_MSG_USERAUTH_GSSAPI_TOKEN, NULL);
- userauth_finish(authctxt, 0, "gssapi-with-mic");
+ userauth_finish(authctxt, 0,
+ gssapi_with_mic ? "gssapi-with-mic" :
+ "gssapi");
} else {
if (send_tok.length != 0) {
packet_start(SSH2_MSG_USERAUTH_GSSAPI_TOKEN);
}
if (maj_status == GSS_S_COMPLETE) {
dispatch_set(SSH2_MSG_USERAUTH_GSSAPI_TOKEN, NULL);
- if (flags & GSS_C_INTEG_FLAG)
+ if (flags & GSS_C_INTEG_FLAG && gssapi_with_mic)
dispatch_set(SSH2_MSG_USERAUTH_GSSAPI_MIC,
&input_gssapi_mic);
else
gss_release_buffer(&maj_status, &send_tok);
}
+static void
+gssapi_set_username(Authctxt *authctxt)
+{
+ char *lname = NULL;
+
+ if ((authctxt->user == NULL) || (authctxt->user[0] == '\0')) {
+ PRIVSEP(ssh_gssapi_localname(&lname));
+ if (lname && lname[0] != '\0') {
+ if (authctxt->user) xfree(authctxt->user);
+ authctxt->user = lname;
+ debug("set username to %s from gssapi context", lname);
+ authctxt->pw = PRIVSEP(getpwnamallow(authctxt->user));
+ if (authctxt->pw) {
+ authctxt->valid = 1;
+#ifdef USE_PAM
+ if (options.use_pam)
+ PRIVSEP(start_pam(authctxt));
+#endif
+ }
+ } else {
+ debug("failed to set username from gssapi context");
+ packet_send_debug("failed to set username from gssapi context");
+ }
+ }
+}
+
/*
* This is called when the client thinks we've completed authentication.
* It should only be enabled in the dispatch handler by the function above,
if (authctxt == NULL || (authctxt->methoddata == NULL && !use_privsep))
fatal("No authentication or GSSAPI context");
+ gssapi_set_username(authctxt);
+
gssctxt = authctxt->methoddata;
/*
packet_check_eom();
- authenticated = PRIVSEP(ssh_gssapi_userok(authctxt->user,
- authctxt->pw));
+ /* user should be set if valid but we double-check here */
+ if (authctxt->valid && authctxt->user && authctxt->user[0]) {
- authenticated = PRIVSEP(ssh_gssapi_userok(authctxt->user));
++ authenticated = PRIVSEP(ssh_gssapi_userok(authctxt->user,
++ authctxt->pw));
+ } else {
+ authenticated = 0;
+ }
authctxt->postponed = 0;
dispatch_set(SSH2_MSG_USERAUTH_GSSAPI_TOKEN, NULL);
dispatch_set(SSH2_MSG_USERAUTH_GSSAPI_ERRTOK, NULL);
dispatch_set(SSH2_MSG_USERAUTH_GSSAPI_MIC, NULL);
dispatch_set(SSH2_MSG_USERAUTH_GSSAPI_EXCHANGE_COMPLETE, NULL);
- userauth_finish(authctxt, authenticated, "gssapi-with-mic");
+ userauth_finish(authctxt, authenticated,
+ gssapi_with_mic ? "gssapi-with-mic" : "gssapi");
+}
+
+static int
+userauth_gssapi_with_mic(Authctxt *authctxt)
+{
+ gssapi_with_mic = 1;
+ return userauth_gssapi(authctxt);
+}
+
+static int
+userauth_gssapi_without_mic(Authctxt *authctxt)
+{
+ gssapi_with_mic = 0;
+ return userauth_gssapi(authctxt);
}
static void
gssbuf.value = buffer_ptr(&b);
gssbuf.length = buffer_len(&b);
+ gssapi_set_username(authctxt);
+
if (!GSS_ERROR(PRIVSEP(ssh_gssapi_checkmic(gssctxt, &gssbuf, &mic))))
- authenticated =
- PRIVSEP(ssh_gssapi_userok(authctxt->user, authctxt->pw));
+ if (authctxt->valid && authctxt->user && authctxt->user[0]) {
- authenticated = PRIVSEP(ssh_gssapi_userok(authctxt->user));
++ authenticated =
++ PRIVSEP(ssh_gssapi_userok(authctxt->user, authctxt->pw));
+ } else {
- authenticated = 0;
++ authenticated = 0;
+ }
else
logit("GSSAPI MIC check failed");
userauth_finish(authctxt, authenticated, "gssapi-with-mic");
}
+static void ssh_gssapi_userauth_error(Gssctxt *ctxt) {
+ char *errstr;
+ OM_uint32 maj,min;
+
+ errstr=PRIVSEP(ssh_gssapi_last_error(ctxt,&maj,&min));
+ if (errstr) {
+ packet_start(SSH2_MSG_USERAUTH_GSSAPI_ERROR);
+ packet_put_int(maj);
+ packet_put_int(min);
+ packet_put_cstring(errstr);
+ packet_put_cstring("");
+ packet_send();
+ packet_write_wait();
+ xfree(errstr);
+ }
+}
+
+Authmethod method_external = {
+ "external-keyx",
+ userauth_external,
+ &options.gss_authentication
+};
+
Authmethod method_gsskeyex = {
"gssapi-keyex",
userauth_gsskeyex,
Authmethod method_gssapi = {
"gssapi-with-mic",
- userauth_gssapi,
+ userauth_gssapi_with_mic,
+ &options.gss_authentication
+};
+
+Authmethod method_gssapi_compat = {
+ "gssapi",
+ userauth_gssapi_without_mic,
&options.gss_authentication
};
extern Authmethod method_kbdint;
extern Authmethod method_hostbased;
#ifdef GSSAPI
+extern Authmethod method_external;
extern Authmethod method_gsskeyex;
extern Authmethod method_gssapi;
+extern Authmethod method_gssapi_compat;
#endif
#ifdef JPAKE
extern Authmethod method_jpake;
&method_pubkey,
#ifdef GSSAPI
&method_gsskeyex,
+ &method_external,
&method_gssapi,
+ &method_gssapi_compat,
#endif
#ifdef JPAKE
&method_jpake,
user = packet_get_string(NULL);
service = packet_get_string(NULL);
method = packet_get_string(NULL);
- debug("userauth-request for user %s service %s method %s", user, service, method);
+
+#ifdef GSSAPI
+ if (user[0] == '\0') {
+ debug("received empty username for %s", method);
+ if (strcmp(method, "external-keyx") == 0 ||
+ strcmp(method, "gssapi-keyex") == 0) {
+ char *lname = NULL;
+ PRIVSEP(ssh_gssapi_localname(&lname));
+ if (lname && lname[0] != '\0') {
+ xfree(user);
+ user = lname;
+ debug("set username to %s from gssapi context", user);
+ } else {
+ debug("failed to set username from gssapi context");
+ packet_send_debug("failed to set username from gssapi context");
+ }
+ }
+ }
+#endif
+
+ debug("userauth-request for user %s service %s method %s",
+ user[0] ? user : "<implicit>", service, method);
if (!log_flag) {
logit("SSH: Server;Ltype: Authname;Remote: %s-%d;Name: %s",
- get_remote_ipaddr(), get_remote_port(), user);
+ get_remote_ipaddr(), get_remote_port(),
+ user[0] ? user : "<implicit>");
log_flag = 1;
}
debug("attempt %d failures %d", authctxt->attempt, authctxt->failures);
if ((style = strchr(user, ':')) != NULL)
*style++ = 0;
- if (authctxt->attempt++ == 0) {
- /* setup auth context */
+ /* If first time or username changed or empty username,
+ setup/reset authentication context. */
+ if ((authctxt->attempt++ == 0) ||
+ (strcmp(user, authctxt->user) != 0) ||
+ (strcmp(user, "") == 0)) {
+ if (authctxt->user) {
+ xfree(authctxt->user);
+ authctxt->user = NULL;
+ }
+ authctxt->valid = 0;
+ authctxt->user = xstrdup(user);
+ if (strcmp(service, "ssh-connection") != 0) {
+ packet_disconnect("Unsupported service %s", service);
+ }
+#ifdef GSSAPI
+ /* If we're going to set the username based on the
+ GSSAPI context later, then wait until then to
+ verify it. Just put in placeholders for now. */
+ if ((strcmp(user, "") == 0) &&
+ ((strcmp(method, "gssapi") == 0) ||
+ (strcmp(method, "gssapi-with-mic") == 0))) {
+ authctxt->pw = fakepw();
+ } else {
+#endif
authctxt->pw = PRIVSEP(getpwnamallow(user));
- authctxt->user = xstrdup(user);
- if (authctxt->pw && strcmp(service, "ssh-connection")==0) {
+ if (authctxt->pw) {
authctxt->valid = 1;
debug2("input_userauth_request: setting up authctxt for %s", user);
} else {
PRIVSEP(audit_event(SSH_INVALID_USER));
#endif
}
+#ifdef GSSAPI
+ } /* endif for setting username based on GSSAPI context */
+#endif
#ifdef USE_PAM
if (options.use_pam)
PRIVSEP(start_pam(authctxt));
#endif
setproctitle("%s%s", authctxt->valid ? user : "unknown",
use_privsep ? " [net]" : "");
- authctxt->service = xstrdup(service);
- authctxt->style = style ? xstrdup(style) : NULL;
- if (use_privsep)
- mm_inform_authserv(service, style);
- userauth_banner();
- } else if (strcmp(user, authctxt->user) != 0 ||
- strcmp(service, authctxt->service) != 0) {
- packet_disconnect("Change of username or service not allowed: "
+ if (authctxt->attempt == 1) {
+ authctxt->service = xstrdup(service);
+ authctxt->style = style ? xstrdup(style) : NULL;
+ if (use_privsep)
+ mm_inform_authserv(service, style);
+ userauth_banner();
+ }
+ }
+ if (strcmp(service, authctxt->service) != 0) {
+ packet_disconnect("Change of service not allowed: "
"(%s,%s) -> (%s,%s)",
authctxt->user, authctxt->service, user, service);
}
/* now we can break out */
authctxt->success = 1;
} else {
-
+ /* Dont count server configuration issues against the client */
/* Allow initial try of "none" auth without failure penalty */
if (!authctxt->server_caused_failure &&
- (authctxt->attempt > 1 || strcmp(method, "none") != 0))
+ (authctxt->attempt > 1 || strcmp(method, "none") != 0))
authctxt->failures++;
if (authctxt->failures >= options.max_authtries) {
#ifdef SSH_AUDIT_EVENTS
/* return no more than 64MB */
if ((ret == 0) && tcpwinsz > BUFFER_MAX_LEN_HPN)
tcpwinsz = BUFFER_MAX_LEN_HPN;
- debug2("tcpwinsz: %d for connection: %d", tcpwinsz,
- packet_get_connection_in());
return(tcpwinsz);
}
c = channel_new("port listener", type, sock, sock, -1,
CHAN_TCP_WINDOW_DEFAULT, CHAN_TCP_PACKET_DEFAULT,
0, "port listener", 1);
- else
- c = channel_new("port listener", type, sock, sock, -1,
- hpn_buffer_size, CHAN_TCP_PACKET_DEFAULT,
- 0, "port listener", 1);
+ else
+ c = channel_new("port listener", type, sock, sock, -1,
+ hpn_buffer_size, CHAN_TCP_PACKET_DEFAULT,
+ 0, "port listener", 1);
c->path = xstrdup(host);
c->host_port = port_to_connect;
c->listening_port = listen_port;
AC_CONFIG_SRCDIR([ssh.c])
AC_CONFIG_HEADER(config.h)
+
+# Handle Globus configuration right away, because the Globus flavor
+# determines our compiler options.
+
+# Check whether the user wants GSI (Globus) support
+gsi_path="no"
+AC_ARG_WITH(gsi,
+ [ --with-gsi Enable Globus GSI authentication support],
+ [
+ gsi_path="$withval"
+ ]
+)
+
+AC_ARG_WITH(globus,
+ [ --with-globus Enable Globus GSI authentication support],
+ [
+ gsi_path="$withval"
+ ]
+)
+
+AC_ARG_WITH(globus-static,
+ [ --with-globus-static Link statically with Globus GSI libraries],
+ [
+ gsi_static="-static"
+ if test "x$gsi_path" = "xno" ; then
+ gsi_path="$withval"
+ fi
+ ]
+)
+
+# Check whether the user has a Globus flavor type
+globus_flavor_type="no"
+AC_ARG_WITH(globus-flavor,
+ [ --with-globus-flavor=TYPE Specify Globus flavor type (ex: gcc32dbg)],
+ [
+ globus_flavor_type="$withval"
+ if test "x$gsi_path" = "xno" ; then
+ gsi_path="yes"
+ fi
+ ]
+)
+
+if test "x$gsi_path" != "xno" ; then
+ # Globus GSSAPI configuration
+ AC_MSG_CHECKING(for Globus GSI)
+ AC_DEFINE(GSI, 1, [Define if you want GSI/Globus authentication support.])
+
+ if test "$GSSAPI" -a "$GSSAPI" != "mechglue"; then
+ AC_MSG_ERROR([Previously configured GSSAPI library conflicts with Globus GSI.])
+ fi
+ if test -z "$GSSAPI"; then
+ AC_DEFINE(GSSAPI)
+ GSSAPI="GSI"
+ fi
+
+ if test "x$gsi_path" = "xyes" ; then
+ if test -z "$GLOBUS_LOCATION" ; then
+ AC_MSG_ERROR(GLOBUS_LOCATION environment variable must be set.)
+ else
+ gsi_path="$GLOBUS_LOCATION"
+ fi
+ fi
+ GLOBUS_LOCATION="$gsi_path"
+ export GLOBUS_LOCATION
+ if test ! -d "$GLOBUS_LOCATION" ; then
+ AC_MSG_ERROR(Cannot find Globus installation. Set GLOBUS_LOCATION environment variable.)
+ fi
+
+ if test "x$globus_flavor_type" = "xno" ; then
+ AC_MSG_ERROR(--with-globus-flavor=TYPE must be specified)
+ fi
+ if test "x$globus_flavor_type" = "xyes" ; then
+ AC_MSG_ERROR(--with-globus-flavor=TYPE must specify a flavor type)
+ fi
+
+ GLOBUS_INCLUDE="${gsi_path}/include/${globus_flavor_type}"
+ if test ! -d "$GLOBUS_INCLUDE" ; then
+ AC_MSG_ERROR(Cannot find Globus flavor-specific include directory: ${GLOBUS_INCLUDE})
+ fi
+
+ if test -x ${gsi_path}/bin/globus-makefile-header ; then
+ ${gsi_path}/bin/globus-makefile-header --flavor=${globus_flavor_type} ${gsi_static} globus_gss_assist | sed 's/ = \(.*\)/="\1"/' > ./gpt_build_tmp.sh
+ elif test -x ${gsi_path}/sbin/globus-makefile-header ; then
+ ${gsi_path}/sbin/globus-makefile-header --flavor=${globus_flavor_type} ${gsi_static} globus_gss_assist | sed 's/ = \(.*\)/="\1"/' > ./gpt_build_tmp.sh
+ else
+ AC_MSG_ERROR(Cannot find globus-makefile-header: Globus installation is incomplete)
+ fi
+ . ./gpt_build_tmp.sh
+ if test -z "$GLOBUS_PKG_LIBS" ; then
+ AC_MSG_ERROR(globus-makefile-header failed)
+ fi
+
+ AC_MSG_RESULT($GLOBUS_LOCATION)
+ AC_DEFINE(HAVE_GSSAPI_H)
+
+ CC="$GLOBUS_CC"
+ CFLAGS="$GLOBUS_CFLAGS"
+ CPP="$GLOBUS_CPP"
+ CPPFLAGS="$GLOBUS_CPPFLAGS $GLOBUS_INCLUDES"
+ LIBS="$LIBS $GLOBUS_LIBS $GLOBUS_PKG_LIBS"
+ LD="$GLOBUS_LD"
+ LDFLAGS="$LDFLAGS $GLOBUS_LDFLAGS"
+
+ INSTALL_GSISSH="yes"
+else
+ INSTALL_GSISSH=""
+fi
+# End Globus/GSI section
+
AC_PROG_CC
AC_CANONICAL_HOST
AC_C_BIGENDIAN
AC_DEFINE(BROKEN_SETREGID)
;;
*-*-darwin*)
- AC_MSG_CHECKING(if we have working getaddrinfo)
- AC_TRY_RUN([#include <mach-o/dyld.h>
-main() { if (NSVersionOfRunTimeLibrary("System") >= (60 << 16))
- exit(0);
- else
- exit(1);
-}], [AC_MSG_RESULT(working)],
- [AC_MSG_RESULT(buggy)
- AC_DEFINE(BROKEN_GETADDRINFO, 1, [getaddrinfo is broken (if present)])],
- [AC_MSG_RESULT(assume it is working)])
+ AC_DEFINE(BROKEN_GETADDRINFO, 1, [Define if getaddrinfo is broken)])
+ AC_DEFINE(BROKEN_GETADDRINFO)
AC_DEFINE(SETEUID_BREAKS_SETUID)
AC_DEFINE(BROKEN_SETREUID)
AC_DEFINE(BROKEN_SETREGID)
[Use tunnel device compatibility to OpenBSD])
AC_DEFINE(SSH_TUN_PREPEND_AF, 1,
[Prepend the address family to IP tunnel traffic])
- m4_pattern_allow(AU_IPv)
- AC_CHECK_DECL(AU_IPv4, [],
- AC_DEFINE(AU_IPv4, 0, [System only supports IPv4 audit records])
- [#include <bsm/audit.h>]
- AC_DEFINE(LASTLOG_WRITE_PUTUTXLINE, 1,
- [Define if pututxline updates lastlog too])
- )
AC_MSG_CHECKING(if we have the Security Authorization Session API)
AC_TRY_COMPILE([#include <Security/AuthSession.h>],
[SessionCreate(0, 0);],
fi],
[AC_MSG_RESULT(no)]
)
+ m4_pattern_allow(AU_IPv)
+ AC_CHECK_DECL(AU_IPv4, [],
+ AC_DEFINE(AU_IPv4, 0, [System only supports IPv4 audit records])
+ [#include <bsm/audit.h>]
+ AC_DEFINE(LASTLOG_WRITE_PUTUTXLINE, 1,
+ [Define if pututxline updates lastlog too])
+ )
;;
*-*-dragonfly*)
SSHDLIBS="$SSHDLIBS -lcrypt"
fi
]
)
+if test -z "$GLOBUS_LDFLAGS" ; then
LIBS="-lcrypto $LIBS"
+fi
AC_TRY_LINK_FUNC(RAND_add, AC_DEFINE(HAVE_OPENSSL, 1,
[Define if your ssl headers are included
with #include <openssl/header.h>]),
fi ]
)
+# Finish configuring Globus GSSAPI
+if test "x$gsi_path" != "xno" ; then
+ if test ! -z "$need_dash_r" ; then
+ LDFLAGS="$LDFLAGS -R${gsi_path}/lib"
+ fi
+ if test ! -z "$blibpath" ; then
+ blibpath="$blibpath:${gsi_path}/lib"
+ fi
+ # test that we got the libraries OK
+ AC_TRY_LINK(
+ [],
+ [],
+ [],
+ [
+ AC_MSG_ERROR(link with Globus libraries failed)
+ ]
+ )
+ AC_CHECK_FUNCS(globus_gss_assist_map_and_authorize)
+fi
+AC_SUBST(INSTALL_GSISSH)
+
+# Check whether the user wants GSSAPI mechglue support
+AC_ARG_WITH(mechglue,
+ [ --with-mechglue=PATH Build with GSSAPI mechglue library],
+ [
+ AC_MSG_CHECKING(for mechglue library)
+
+ if test -e ${withval}/libgssapi.a ; then
+ mechglue_lib=${withval}/libgssapi.a
+ elif test -e ${withval}/lib/libgssapi.a ; then
+ mechglue_lib=${withval}/lib/libgssapi.a
+ else
+ AC_MSG_ERROR("Can't find libgssapi in ${withval}");
+ fi
+ LIBS="${mechglue_lib} $LIBS"
+ AC_MSG_RESULT(${mechglue_lib})
+
+ AC_CHECK_LIB(dl, dlopen, , )
+ if test $ac_cv_lib_dl_dlopen = yes; then
+ LDFLAGS="$LDFLAGS -ldl -Wl,-Bsymbolic"
+ fi
+
+ AC_DEFINE(GSSAPI)
+ AC_DEFINE(MECHGLUE, 1, [Define this if you're building with GSSAPI MechGlue.])
+ GSSAPI="mechglue"
+ ]
+)
+
+
# Check whether user wants Kerberos 5 support
KRB5_MSG="no"
AC_ARG_WITH(kerberos5,
AC_CHECK_HEADER(gssapi_krb5.h, ,
[ CPPFLAGS="$oldCPP" ])
- fi
+ # If we're using some other GSSAPI
+ if test "$GSSAPI" -a "$GSSAPI" != "mechglue"; then
+ AC_MSG_ERROR([$GSSAPI GSSAPI library conflicts with Kerberos support. Use mechglue instead.])
+ fi
+
+ if test -z "$GSSAPI"; then
+ GSSAPI="KRB5";
+ fi
+
+ oldCPP="$CPPFLAGS"
+ CPPFLAGS="$CPPFLAGS -I${KRB5ROOT}/include/gssapi"
+ AC_CHECK_HEADER(gssapi_krb5.h, ,
+ [ CPPFLAGS="$oldCPP" ])
+
+ fi
if test ! -z "$need_dash_r" ; then
LDFLAGS="$LDFLAGS -R${KRB5ROOT}/lib"
fi
]
)
+# Check whether user wants AFS_KRB5 support
+AFS_KRB5_MSG="no"
+AC_ARG_WITH(afs-krb5,
+ [ --with-afs-krb5[[=AKLOG_PATH]] Enable aklog to get token (default=/usr/bin/aklog).],
+ [
+ if test "x$withval" != "xno" ; then
+
+ if test "x$withval" != "xyes" ; then
+ AC_DEFINE_UNQUOTED(AKLOG_PATH, "$withval",
+ [Define this if you want to use AFS/Kerberos 5 option, which runs aklog.])
+ else
+ AC_DEFINE_UNQUOTED(AKLOG_PATH,
+ "/usr/bin/aklog",
+ [Define this if you want to use AFS/Kerberos 5 option, which runs aklog.])
+ fi
+
+ if test -z "$KRB5ROOT" ; then
+ AC_MSG_WARN([AFS_KRB5 requires Kerberos 5 support, build may fail])
+ fi
+
+ LIBS="-lkrbafs -lkrb4 $LIBS"
+ if test ! -z "$AFS_LIBS" ; then
+ LIBS="$LIBS $AFS_LIBS"
+ fi
+ AC_DEFINE(AFS_KRB5, 1,
+ [Define this if you want to use AFS/Kerberos 5 option, which runs aklog.])
+ AFS_KRB5_MSG="yes"
+ fi
+ ]
+)
+
+AC_ARG_WITH(session-hooks,
+ [ --with-session-hooks Enable hooks for executing external commands before/after a session],
+ [ AC_DEFINE(SESSION_HOOKS, 1, [Define this if you want support for startup/shutdown hooks]) ]
+)
+
# Looking for programs, paths and files
PRIVSEP_PATH=/var/empty
]
)
+# strip causes problems with GSI libraries...
+if test -z "$GLOBUS_LDFLAGS" ; then
STRIP_OPT=-s
+fi
AC_ARG_ENABLE(strip,
[ --disable-strip Disable calling strip(1) on install],
[
/* $OpenBSD: gss-genr.c,v 1.19 2007/06/12 11:56:15 dtucker Exp $ */
/*
- * Copyright (c) 2001-2007 Simon Wilkinson. All rights reserved.
+ * Copyright (c) 2001-2009 Simon Wilkinson. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
#include "xmalloc.h"
#include "buffer.h"
#include "log.h"
+#include "canohost.h"
#include "ssh2.h"
#include "cipher.h"
#include "key.h"
*/
char *
- ssh_gssapi_client_mechanisms(const char *host) {
+ ssh_gssapi_client_mechanisms(const char *host, const char *client) {
gss_OID_set gss_supported;
OM_uint32 min_status;
- gss_indicate_mechs(&min_status, &gss_supported);
+ if (GSS_ERROR(gss_indicate_mechs(&min_status, &gss_supported)))
+ return NULL;
return(ssh_gssapi_kex_mechs(gss_supported, ssh_gssapi_check_mechanism,
- host));
+ host, client));
}
char *
ssh_gssapi_kex_mechs(gss_OID_set gss_supported, ssh_gssapi_check_fn *check,
- const char *data) {
+ const char *host, const char *client) {
Buffer buf;
size_t i;
int oidpos, enclen;
oidpos = 0;
for (i = 0; i < gss_supported->count; i++) {
if (gss_supported->elements[i].length < 128 &&
- (*check)(NULL, &(gss_supported->elements[i]), data)) {
+ (*check)(NULL, &(gss_supported->elements[i]), host, client)) {
deroid[0] = SSH_GSS_OIDTYPE;
deroid[1] = gss_supported->elements[i].length;
switch (kex_type) {
case KEX_GSS_GRP1_SHA1:
+ if (strlen(name) < sizeof(KEX_GSS_GRP1_SHA1_ID))
+ return GSS_C_NO_OID;
name += sizeof(KEX_GSS_GRP1_SHA1_ID) - 1;
break;
case KEX_GSS_GRP14_SHA1:
+ if (strlen(name) < sizeof(KEX_GSS_GRP14_SHA1_ID))
+ return GSS_C_NO_OID;
name += sizeof(KEX_GSS_GRP14_SHA1_ID) - 1;
break;
case KEX_GSS_GEX_SHA1:
+ if (strlen(name) < sizeof(KEX_GSS_GEX_SHA1_ID))
+ return GSS_C_NO_OID;
name += sizeof(KEX_GSS_GEX_SHA1_ID) - 1;
break;
default:
void
ssh_gssapi_delete_ctx(Gssctxt **ctx)
{
+#if !defined(MECHGLUE)
OM_uint32 ms;
+#endif
if ((*ctx) == NULL)
return;
+#if !defined(MECHGLUE) /* mechglue has some memory management issues */
if ((*ctx)->context != GSS_C_NO_CONTEXT)
gss_delete_sec_context(&ms, &(*ctx)->context, GSS_C_NO_BUFFER);
if ((*ctx)->name != GSS_C_NO_NAME)
gss_release_name(&ms, &(*ctx)->client);
if ((*ctx)->client_creds != GSS_C_NO_CREDENTIAL)
gss_release_cred(&ms, &(*ctx)->client_creds);
+#endif
xfree(*ctx);
*ctx = NULL;
}
ctx->major = gss_init_sec_context(&ctx->minor,
- GSS_C_NO_CREDENTIAL, &ctx->context, ctx->name, ctx->oid,
+ ctx->client_creds, &ctx->context, ctx->name, ctx->oid,
GSS_C_MUTUAL_FLAG | GSS_C_INTEG_FLAG | deleg_flag,
0, NULL, recv_tok, NULL, send_tok, flags, NULL);
ssh_gssapi_import_name(Gssctxt *ctx, const char *host)
{
gss_buffer_desc gssbuf;
+ char *xhost;
char *val;
- xasprintf(&val, "host@%s", host);
+ /* Make a copy of the host name, in case it was returned by a
+ * previous call to gethostbyname(). */
+ xhost = xstrdup(host);
+
+ /* Make sure we have the FQDN. Some GSSAPI implementations don't do
+ * this for us themselves */
+ resolve_localhost(&xhost);
+
+ xasprintf(&val, "host@%s", xhost);
gssbuf.value = val;
gssbuf.length = strlen(gssbuf.value);
&gssbuf, GSS_C_NT_HOSTBASED_SERVICE, &ctx->name)))
ssh_gssapi_error(ctx);
+ xfree(xhost);
xfree(gssbuf.value);
return (ctx->major);
}
+ OM_uint32
+ ssh_gssapi_client_identity(Gssctxt *ctx, const char *name)
+ {
+ gss_buffer_desc gssbuf;
+ gss_name_t gssname;
+ OM_uint32 status;
+ gss_OID_set oidset;
+
+ gssbuf.value = (void *) name;
+ gssbuf.length = strlen(gssbuf.value);
+
+ gss_create_empty_oid_set(&status, &oidset);
+ gss_add_oid_set_member(&status, ctx->oid, &oidset);
+
+ ctx->major = gss_import_name(&ctx->minor, &gssbuf,
+ GSS_C_NT_USER_NAME, &gssname);
+
+ if (!ctx->major)
+ ctx->major = gss_acquire_cred(&ctx->minor,
+ gssname, 0, oidset, GSS_C_INITIATE,
+ &ctx->client_creds, NULL, NULL);
+
+ gss_release_name(&status, &gssname);
+ gss_release_oid_set(&status, &oidset);
+
+ if (ctx->major)
+ ssh_gssapi_error(ctx);
+
+ return(ctx->major);
+ }
+
OM_uint32
ssh_gssapi_sign(Gssctxt *ctx, gss_buffer_t buffer, gss_buffer_t hash)
{
+ if (ctx == NULL)
+ return -1;
+
if ((ctx->major = gss_get_mic(&ctx->minor, ctx->context,
GSS_C_QOP_DEFAULT, buffer, hash)))
ssh_gssapi_error(ctx);
}
/* Priviledged when used by server */
- /* Moved here from gss-serv.c because called by kexgss_client(). */
OM_uint32
ssh_gssapi_checkmic(Gssctxt *ctx, gss_buffer_t gssbuf, gss_buffer_t gssmic)
{
- if (ctx == NULL)
- return -1;
+ if (ctx == NULL)
+ return -1;
- ctx->major = gss_verify_mic(&ctx->minor, ctx->context,
- gssbuf, gssmic, NULL);
+ ctx->major = gss_verify_mic(&ctx->minor, ctx->context,
+ gssbuf, gssmic, NULL);
- return (ctx->major);
+ return (ctx->major);
}
void
}
int
- ssh_gssapi_check_mechanism(Gssctxt **ctx, gss_OID oid, const char *host)
+ ssh_gssapi_check_mechanism(Gssctxt **ctx, gss_OID oid, const char *host,
+ const char *client)
{
gss_buffer_desc token = GSS_C_EMPTY_BUFFER;
OM_uint32 major, minor;
ssh_gssapi_build_ctx(ctx);
ssh_gssapi_set_oid(*ctx, oid);
major = ssh_gssapi_import_name(*ctx, host);
+
+ if (!GSS_ERROR(major) && client)
+ major = ssh_gssapi_client_identity(*ctx, client);
+
if (!GSS_ERROR(major)) {
major = ssh_gssapi_init_ctx(*ctx, 0, GSS_C_NO_BUFFER, &token,
NULL);
return (!GSS_ERROR(major));
}
+ int
+ ssh_gssapi_credentials_updated(Gssctxt *ctxt) {
+ static gss_name_t saved_name = GSS_C_NO_NAME;
+ static OM_uint32 saved_lifetime = 0;
+ static gss_OID saved_mech = GSS_C_NO_OID;
+ static gss_name_t name;
+ static OM_uint32 last_call = 0;
+ OM_uint32 lifetime, now, major, minor;
+ int equal;
+ gss_cred_usage_t usage = GSS_C_INITIATE;
+
+ now = time(NULL);
+
+ if (ctxt) {
+ debug("Rekey has happened - updating saved versions");
+
+ if (saved_name != GSS_C_NO_NAME)
+ gss_release_name(&minor, &saved_name);
+
+ major = gss_inquire_cred(&minor, GSS_C_NO_CREDENTIAL,
+ &saved_name, &saved_lifetime, NULL, NULL);
+
+ if (!GSS_ERROR(major)) {
+ saved_mech = ctxt->oid;
+ saved_lifetime+= now;
+ } else {
+ /* Handle the error */
+ }
+ return 0;
+ }
+
+ if (now - last_call < 10)
+ return 0;
+
+ last_call = now;
+
+ if (saved_mech == GSS_C_NO_OID)
+ return 0;
+
+ major = gss_inquire_cred(&minor, GSS_C_NO_CREDENTIAL,
+ &name, &lifetime, NULL, NULL);
+ if (major == GSS_S_CREDENTIALS_EXPIRED)
+ return 0;
+ else if (GSS_ERROR(major))
+ return 0;
+
+ major = gss_compare_name(&minor, saved_name, name, &equal);
+ gss_release_name(&minor, &name);
+ if (GSS_ERROR(major))
+ return 0;
+
+ if (equal && (saved_lifetime < lifetime + now - 10))
+ return 1;
+
+ return 0;
+ }
+
#endif /* GSSAPI */
--- /dev/null
- &ssh_gssapi_gsi_storecreds
+/*
+ * Copyright (c) 2001-2003 Simon Wilkinson. 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.
+ *
+ * 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.
+ */
+
+#include "includes.h"
+
+#ifdef GSSAPI
+#ifdef GSI
+
+#include <sys/types.h>
+
+#include <stdarg.h>
+#include <string.h>
+
+#include "xmalloc.h"
+#include "key.h"
+#include "hostfile.h"
+#include "auth.h"
+#include "log.h"
+#include "servconf.h"
+
+#include "buffer.h"
+#include "ssh-gss.h"
+
+extern ServerOptions options;
+
+#include <globus_gss_assist.h>
+
+static int ssh_gssapi_gsi_userok(ssh_gssapi_client *client, char *name);
+static int ssh_gssapi_gsi_localname(ssh_gssapi_client *client, char **user);
+static void ssh_gssapi_gsi_storecreds(ssh_gssapi_client *client);
+
+ssh_gssapi_mech gssapi_gsi_mech = {
+ "dZuIebMjgUqaxvbF7hDbAw==",
+ "GSI",
+ {9, "\x2B\x06\x01\x04\x01\x9B\x50\x01\x01"},
+ NULL,
+ &ssh_gssapi_gsi_userok,
+ &ssh_gssapi_gsi_localname,
++ &ssh_gssapi_gsi_storecreds,
++ NULL
+};
+
+/*
+ * Check if this user is OK to login under GSI. User has been authenticated
+ * as identity in global 'client_name.value' and is trying to log in as passed
+ * username in 'name'.
+ *
+ * Returns non-zero if user is authorized, 0 otherwise.
+ */
+static int
+ssh_gssapi_gsi_userok(ssh_gssapi_client *client, char *name)
+{
+ int authorized = 0;
+ globus_result_t res;
+#ifdef HAVE_GLOBUS_GSS_ASSIST_MAP_AND_AUTHORIZE
+ char lname[256] = "";
+#endif
+
+#ifdef GLOBUS_GSI_GSS_ASSIST_MODULE
+ if (globus_module_activate(GLOBUS_GSI_GSS_ASSIST_MODULE) != 0) {
+ return 0;
+ }
+#endif
+
+/* use new globus_gss_assist_map_and_authorize() interface if available */
+#ifdef HAVE_GLOBUS_GSS_ASSIST_MAP_AND_AUTHORIZE
+ debug("calling globus_gss_assist_map_and_authorize()");
+ if (GLOBUS_SUCCESS !=
+ (res = globus_gss_assist_map_and_authorize(client->context, "ssh",
+ name, lname, 256))) {
+ debug("%s", globus_error_print_chain(globus_error_get(res)));
+ } else if (lname && lname[0] && strcmp(name, lname) != 0) {
+ debug("GSI user maps to %s, not %s", lname, name);
+ } else {
+ authorized = 1;
+ }
+#else
+ debug("calling globus_gss_assist_userok()");
+ if (GLOBUS_SUCCESS !=
+ (res = (globus_gss_assist_userok(client->displayname.value,
+ name)))) {
+ debug("%s", globus_error_print_chain(globus_error_get(res)));
+ } else {
+ authorized = 1;
+ }
+#endif
+
+ logit("GSI user %s is%s authorized as target user %s",
+ (char *) client->displayname.value, (authorized ? "" : " not"), name);
+
+ return authorized;
+}
+
+/*
+ * Return the local username associated with the GSI credentials.
+ */
+int
+ssh_gssapi_gsi_localname(ssh_gssapi_client *client, char **user)
+{
+ globus_result_t res;
+#ifdef HAVE_GLOBUS_GSS_ASSIST_MAP_AND_AUTHORIZE
+ char lname[256] = "";
+#endif
+
+#ifdef GLOBUS_GSI_GSS_ASSIST_MODULE
+ if (globus_module_activate(GLOBUS_GSI_GSS_ASSIST_MODULE) != 0) {
+ return 0;
+ }
+#endif
+
+/* use new globus_gss_assist_map_and_authorize() interface if available */
+#ifdef HAVE_GLOBUS_GSS_ASSIST_MAP_AND_AUTHORIZE
+ debug("calling globus_gss_assist_map_and_authorize()");
+ if (GLOBUS_SUCCESS !=
+ (res = globus_gss_assist_map_and_authorize(client->context, "ssh",
+ NULL, lname, 256))) {
+ debug("%s", globus_error_print_chain(globus_error_get(res)));
+ logit("failed to map GSI user %s", (char *)client->displayname.value);
+ return 0;
+ }
+ *user = strdup(lname);
+#else
+ debug("calling globus_gss_assist_gridmap()");
+ if (GLOBUS_SUCCESS !=
+ (res = globus_gss_assist_gridmap(client->displayname.value, user))) {
+ debug("%s", globus_error_print_chain(globus_error_get(res)));
+ logit("failed to map GSI user %s", (char *)client->displayname.value);
+ return 0;
+ }
+#endif
+
+ logit("GSI user %s mapped to target user %s",
+ (char *) client->displayname.value, *user);
+
+ return 1;
+}
+
+/*
+ * Export GSI credentials to disk.
+ */
+static void
+ssh_gssapi_gsi_storecreds(ssh_gssapi_client *client)
+{
+ OM_uint32 major_status;
+ OM_uint32 minor_status;
+ gss_buffer_desc export_cred = GSS_C_EMPTY_BUFFER;
+ char * p;
+
+ if (!client || !client->creds) {
+ return;
+ }
+
+ major_status = gss_export_cred(&minor_status,
+ client->creds,
+ GSS_C_NO_OID,
+ 1,
+ &export_cred);
+ if (GSS_ERROR(major_status) && major_status != GSS_S_UNAVAILABLE) {
+ Gssctxt *ctx;
+ ssh_gssapi_build_ctx(&ctx);
+ ctx->major = major_status;
+ ctx->minor = minor_status;
+ ssh_gssapi_set_oid(ctx, &gssapi_gsi_mech.oid);
+ ssh_gssapi_error(ctx);
+ ssh_gssapi_delete_ctx(&ctx);
+ return;
+ }
+
+ p = strchr((char *) export_cred.value, '=');
+ if (p == NULL) {
+ logit("Failed to parse exported credentials string '%.100s'",
+ (char *)export_cred.value);
+ gss_release_buffer(&minor_status, &export_cred);
+ return;
+ }
+ *p++ = '\0';
+ if (strcmp((char *)export_cred.value,"X509_USER_DELEG_PROXY") == 0) {
+ client->store.envvar = strdup("X509_USER_PROXY");
+ } else {
+ client->store.envvar = strdup((char *)export_cred.value);
+ }
+ if (access(p, R_OK) == 0) {
+ if (client->store.filename) {
+ if (rename(p, client->store.filename) < 0) {
+ logit("Failed to rename %s to %s: %s", p,
+ client->store.filename, strerror(errno));
+ xfree(client->store.filename);
+ client->store.filename = strdup(p);
+ } else {
+ p = client->store.filename;
+ }
+ } else {
+ client->store.filename = strdup(p);
+ }
+ }
+ client->store.envval = strdup(p);
+#ifdef USE_PAM
+ if (options.use_pam)
+ do_pam_putenv(client->store.envvar, client->store.envval);
+#endif
+ gss_release_buffer(&minor_status, &export_cred);
+}
+
+#endif /* GSI */
+#endif /* GSSAPI */
/* $OpenBSD: gss-serv-krb5.c,v 1.7 2006/08/03 03:34:42 deraadt Exp $ */
/*
- * Copyright (c) 2001-2003 Simon Wilkinson. All rights reserved.
+ * Copyright (c) 2001-2007 Simon Wilkinson. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
#ifdef HEIMDAL
# include <krb5.h>
-#else
+#elif !defined(MECHGLUE)
# ifdef HAVE_GSSAPI_KRB5_H
# include <gssapi_krb5.h>
# elif HAVE_GSSAPI_GSSAPI_KRB5_H
#endif
static krb5_context krb_context = NULL;
- &ssh_gssapi_krb5_storecreds
+static int ssh_gssapi_krb5_init();
+static int ssh_gssapi_krb5_userok(ssh_gssapi_client *client, char *name);
+static int ssh_gssapi_krb5_localname(ssh_gssapi_client *client, char **user);
+static void ssh_gssapi_krb5_storecreds(ssh_gssapi_client *client);
+
+ssh_gssapi_mech gssapi_kerberos_mech = {
+ "toWM5Slw5Ew8Mqkay+al2g==",
+ "Kerberos",
+ {9, "\x2A\x86\x48\x86\xF7\x12\x01\x02\x02"},
+ NULL,
+ &ssh_gssapi_krb5_userok,
+ &ssh_gssapi_krb5_localname,
++ &ssh_gssapi_krb5_storecreds,
++ &ssh_gssapi_krb5_updatecreds
+};
/* Initialise the krb5 library, for the stuff that GSSAPI won't do */
}
+/* Retrieve the local username associated with a set of Kerberos
+ * credentials. Hopefully we can use this for the 'empty' username
+ * logins discussed in the draft */
+static int
+ssh_gssapi_krb5_localname(ssh_gssapi_client *client, char **user) {
+ krb5_principal princ;
+ int retval;
+
+ if (ssh_gssapi_krb5_init() == 0)
+ return 0;
+
+ if ((retval=krb5_parse_name(krb_context, client->displayname.value,
+ &princ))) {
+ logit("krb5_parse_name(): %.100s",
+ krb5_get_err_text(krb_context,retval));
+ return 0;
+ }
+
+ /* We've got to return a malloc'd string */
+ *user = (char *)xmalloc(256);
+ if (krb5_aname_to_localname(krb_context, princ, 256, *user)) {
+ xfree(*user);
+ *user = NULL;
+ return(0);
+ }
+
+ return(1);
+}
+
/* This writes out any forwarded credentials from the structure populated
* during userauth. Called after we have setuid to the user */
krb5_error_code problem;
krb5_principal princ;
OM_uint32 maj_status, min_status;
+ gss_cred_id_t krb5_cred_handle;
int len;
const char *new_ccname;
krb5_free_principal(krb_context, princ);
- if ((maj_status = gss_krb5_copy_ccache(&min_status,
- client->creds, ccache))) {
+#ifdef MECHGLUE
+ krb5_cred_handle =
+ __gss_get_mechanism_cred(client->creds,
+ &(gssapi_kerberos_mech.oid));
+#else
+ krb5_cred_handle = client->creds;
+#endif
+
+ if ((maj_status = gss_krb5_copy_ccache(&min_status,
+ krb5_cred_handle, ccache))) {
logit("gss_krb5_copy_ccache() failed");
krb5_cc_destroy(krb_context, ccache);
return;
return;
}
-ssh_gssapi_mech gssapi_kerberos_mech = {
- "toWM5Slw5Ew8Mqkay+al2g==",
- "Kerberos",
- {9, "\x2A\x86\x48\x86\xF7\x12\x01\x02\x02"},
- NULL,
- &ssh_gssapi_krb5_userok,
- NULL,
- &ssh_gssapi_krb5_storecreds,
- &ssh_gssapi_krb5_updatecreds
-};
-
+ int
+ ssh_gssapi_krb5_updatecreds(ssh_gssapi_ccache *store,
+ ssh_gssapi_client *client)
+ {
+ krb5_ccache ccache = NULL;
+ krb5_principal principal = NULL;
+ char *name = NULL;
+ krb5_error_code problem;
+ OM_uint32 maj_status, min_status;
+
+ if ((problem = krb5_cc_resolve(krb_context, store->envval, &ccache))) {
+ logit("krb5_cc_resolve(): %.100s",
+ krb5_get_err_text(krb_context, problem));
+ return 0;
+ }
+
+ /* Find out who the principal in this cache is */
+ if ((problem = krb5_cc_get_principal(krb_context, ccache,
+ &principal))) {
+ logit("krb5_cc_get_principal(): %.100s",
+ krb5_get_err_text(krb_context, problem));
+ krb5_cc_close(krb_context, ccache);
+ return 0;
+ }
+
+ if ((problem = krb5_unparse_name(krb_context, principal, &name))) {
+ logit("krb5_unparse_name(): %.100s",
+ krb5_get_err_text(krb_context, problem));
+ krb5_free_principal(krb_context, principal);
+ krb5_cc_close(krb_context, ccache);
+ return 0;
+ }
+
+
+ if (strcmp(name,client->exportedname.value)!=0) {
+ debug("Name in local credentials cache differs. Not storing");
+ krb5_free_principal(krb_context, principal);
+ krb5_cc_close(krb_context, ccache);
+ krb5_free_unparsed_name(krb_context, name);
+ return 0;
+ }
+ krb5_free_unparsed_name(krb_context, name);
+
+ /* Name matches, so lets get on with it! */
+
+ if ((problem = krb5_cc_initialize(krb_context, ccache, principal))) {
+ logit("krb5_cc_initialize(): %.100s",
+ krb5_get_err_text(krb_context, problem));
+ krb5_free_principal(krb_context, principal);
+ krb5_cc_close(krb_context, ccache);
+ return 0;
+ }
+
+ krb5_free_principal(krb_context, principal);
+
+ if ((maj_status = gss_krb5_copy_ccache(&min_status, client->creds,
+ ccache))) {
+ logit("gss_krb5_copy_ccache() failed. Sorry!");
+ krb5_cc_close(krb_context, ccache);
+ return 0;
+ }
+
+ return 1;
+ }
+
#endif /* KRB5 */
#endif /* GSSAPI */
/* $OpenBSD: gss-serv.c,v 1.22 2008/05/08 12:02:23 djm Exp $ */
/*
- * Copyright (c) 2001-2006 Simon Wilkinson. All rights reserved.
+ * Copyright (c) 2001-2009 Simon Wilkinson. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
#include "session.h"
#include "misc.h"
#include "servconf.h"
+ #include "uidswap.h"
+#include "xmalloc.h"
#include "ssh-gss.h"
#include "monitor_wrap.h"
extern ServerOptions options;
+extern Authctxt *the_authctxt;
static ssh_gssapi_client gssapi_client =
{ GSS_C_EMPTY_BUFFER, GSS_C_EMPTY_BUFFER,
- GSS_C_NO_CREDENTIAL, NULL, {NULL, NULL, NULL}};
+ GSS_C_NO_CREDENTIAL, GSS_C_NO_NAME, NULL, {NULL, NULL, NULL}, 0, 0};
ssh_gssapi_mech gssapi_null_mech =
- { NULL, NULL, {0, NULL}, NULL, NULL, NULL, NULL};
+ { NULL, NULL, {0, NULL}, NULL, NULL, NULL, NULL, NULL};
#ifdef KRB5
extern ssh_gssapi_mech gssapi_kerberos_mech;
#endif
+#ifdef GSI
+extern ssh_gssapi_mech gssapi_gsi_mech;
+#endif
ssh_gssapi_mech* supported_mechs[]= {
#ifdef KRB5
&gssapi_kerberos_mech,
+#endif
+#ifdef GSI
+ &gssapi_gsi_mech,
#endif
&gssapi_null_mech,
};
+#ifdef GSS_C_GLOBUS_LIMITED_PROXY_FLAG
+static int limited = 0;
+#endif
- /* Unprivileged */
- char *
- ssh_gssapi_server_mechanisms() {
- gss_OID_set supported;
-
- ssh_gssapi_supported_oids(&supported);
- return (ssh_gssapi_kex_mechs(supported, &ssh_gssapi_server_check_mech,
- NULL));
- }
-
- /* Unprivileged */
- int
- ssh_gssapi_server_check_mech(Gssctxt **dum, gss_OID oid, const char *data) {
- Gssctxt *ctx = NULL;
- int res;
-
- res = !GSS_ERROR(PRIVSEP(ssh_gssapi_server_ctx(&ctx, oid)));
- ssh_gssapi_delete_ctx(&ctx);
-
- return (res);
- }
-
/*
* Acquire credentials for a server running on the current host.
* Requires that the context structure contains a valid OID
return GSS_S_COMPLETE;
}
-
/* Privileged */
OM_uint32
ssh_gssapi_server_ctx(Gssctxt **ctx, gss_OID oid)
return (ssh_gssapi_acquire_cred(*ctx));
}
+ /* Unprivileged */
+ char *
+ ssh_gssapi_server_mechanisms() {
+ gss_OID_set supported;
+
+ ssh_gssapi_supported_oids(&supported);
+ return (ssh_gssapi_kex_mechs(supported, &ssh_gssapi_server_check_mech,
+ NULL, NULL));
+ }
+
+ /* Unprivileged */
+ int
+ ssh_gssapi_server_check_mech(Gssctxt **dum, gss_OID oid, const char *data,
+ const char *dummy) {
+ Gssctxt *ctx = NULL;
+ int res;
+
+ res = !GSS_ERROR(PRIVSEP(ssh_gssapi_server_ctx(&ctx, oid)));
+ ssh_gssapi_delete_ctx(&ctx);
+
+ return (res);
+ }
+
/* Unprivileged */
void
ssh_gssapi_supported_oids(gss_OID_set *oidset)
gss_OID_set supported;
gss_create_empty_oid_set(&min_status, oidset);
- /* Ask priviledged process what mechanisms it supports. */
- PRIVSEP(gss_indicate_mechs(&min_status, &supported));
+
- if (GSS_ERROR(gss_indicate_mechs(&min_status, &supported)))
++ /* Ask privileged process what mechanisms it supports. */
++ if (GSS_ERROR(PRIVSEP(gss_indicate_mechs(&min_status, &supported))))
+ return;
while (supported_mechs[i]->name != NULL) {
if (GSS_ERROR(gss_test_oid_set_member(&min_status,
(*flags & GSS_C_INTEG_FLAG))) && (ctx->major == GSS_S_COMPLETE)) {
if (ssh_gssapi_getclient(ctx, &gssapi_client))
fatal("Couldn't convert client name");
+#ifdef GSS_C_GLOBUS_LIMITED_PROXY_FLAG
+ if (flags && (*flags & GSS_C_GLOBUS_LIMITED_PROXY_FLAG))
+ limited=1;
+#endif
}
return (status);
tok = ename->value;
+#ifdef GSI /* GSI gss_export_name() is broken. */
+ if ((ctx->oid->length == gssapi_gsi_mech.oid.length) &&
+ (memcmp(ctx->oid->elements, gssapi_gsi_mech.oid.elements,
+ gssapi_gsi_mech.oid.length) == 0)) {
+ name->length = ename->length;
+ name->value = xmalloc(ename->length+1);
+ memcpy(name->value, ename->value, ename->length);
+ return GSS_S_COMPLETE;
+ }
+#endif
+
/*
* Check that ename is long enough for all of the fixed length
* header, and that the initial ID bytes are correct
ssh_gssapi_getclient(Gssctxt *ctx, ssh_gssapi_client *client)
{
int i = 0;
- if ((ctx->major = gss_inquire_cred_by_mech(&ctx->minor,
- ctx->client_creds, ctx->oid, &new_name,
+ int equal = 0;
+ gss_name_t new_name = GSS_C_NO_NAME;
+ gss_buffer_desc ename = GSS_C_EMPTY_BUFFER;
+
+ if (options.gss_store_rekey && client->used && ctx->client_creds) {
+ if (client->mech->oid.length != ctx->oid->length ||
+ (memcmp(client->mech->oid.elements,
+ ctx->oid->elements, ctx->oid->length) !=0)) {
+ debug("Rekeyed credentials have different mechanism");
+ return GSS_S_COMPLETE;
+ }
+
++ /* Call gss_inquire_cred rather than gss_inquire_cred_by_mech
++ because GSI doesn't support the latter. -jbasney */
++
++ if ((ctx->major = gss_inquire_cred(&ctx->minor,
++ ctx->client_creds, &new_name,
+ NULL, NULL, NULL))) {
+ ssh_gssapi_error(ctx);
+ return (ctx->major);
+ }
- gss_buffer_desc ename;
+ ctx->major = gss_compare_name(&ctx->minor, client->name,
+ new_name, &equal);
+
+ if (GSS_ERROR(ctx->major)) {
+ ssh_gssapi_error(ctx);
+ return (ctx->major);
+ }
+
+ if (!equal) {
+ debug("Rekeyed credentials have different name");
+ return GSS_S_COMPLETE;
+ }
+
+ debug("Marking rekeyed credentials for export");
+
+ gss_release_name(&ctx->minor, &client->name);
+ gss_release_cred(&ctx->minor, &client->creds);
+ client->name = new_name;
+ client->creds = ctx->client_creds;
+ ctx->client_creds = GSS_C_NO_CREDENTIAL;
+ client->updated = 1;
+ return GSS_S_COMPLETE;
+ }
client->mech = NULL;
if (client->mech == NULL)
return GSS_S_FAILURE;
- (ctx->major = gss_inquire_cred_by_mech(&ctx->minor,
- ctx->client_creds, ctx->oid, &client->name, NULL, NULL, NULL))) {
++ /* Call gss_inquire_cred rather than gss_inquire_cred_by_mech
++ because GSI doesn't support the latter. -jbasney */
++
+ if (ctx->client_creds &&
++ (ctx->major = gss_inquire_cred(&ctx->minor,
++ ctx->client_creds, &client->name, NULL, NULL, NULL))) {
+ ssh_gssapi_error(ctx);
+ return (ctx->major);
+ }
+
if ((ctx->major = gss_display_name(&ctx->minor, ctx->client,
&client->displayname, NULL))) {
ssh_gssapi_error(ctx);
return (ctx->major);
}
+ gss_release_buffer(&ctx->minor, &ename);
+
/* We can't copy this structure, so we just move the pointer to it */
client->creds = ctx->client_creds;
ctx->client_creds = GSS_C_NO_CREDENTIAL;
+
+ /* needed for globus_gss_assist_map_and_authorize() */
+ client->context = ctx->context;
+
return (ctx->major);
}
ssh_gssapi_storecreds(void)
{
if (gssapi_client.mech && gssapi_client.mech->storecreds) {
+ if (options.gss_creds_path) {
+ gssapi_client.store.filename =
+ expand_authorized_keys(options.gss_creds_path,
+ the_authctxt->pw);
+ }
(*gssapi_client.mech->storecreds)(&gssapi_client);
} else
debug("ssh_gssapi_storecreds: Not a GSSAPI mechanism");
/* Privileged */
int
- ssh_gssapi_userok(char *user)
+ ssh_gssapi_userok(char *user, struct passwd *pw)
{
OM_uint32 lmin;
debug("No suitable client data");
return 0;
}
+#ifdef GSS_C_GLOBUS_LIMITED_PROXY_FLAG
+ if (limited && options.gsi_allow_limited_proxy != 1) {
+ debug("limited proxy not acceptable for remote login");
+ return 0;
+ }
+#endif
if (gssapi_client.mech && gssapi_client.mech->userok)
- if ((*gssapi_client.mech->userok)(&gssapi_client, user))
+ if ((*gssapi_client.mech->userok)(&gssapi_client, user)) {
+ gssapi_client.used = 1;
+ gssapi_client.store.owner = pw;
return 1;
- else {
+ } else {
/* Destroy delegated credentials if userok fails */
gss_release_buffer(&lmin, &gssapi_client.displayname);
gss_release_buffer(&lmin, &gssapi_client.exportedname);
return (0);
}
+/* ssh_gssapi_checkmic() moved to gss-genr.c so it can be called by
+ kexgss_client(). */
+
+/* Priviledged */
+int
+ssh_gssapi_localname(char **user)
+{
+ *user = NULL;
+ if (gssapi_client.displayname.length==0 ||
+ gssapi_client.displayname.value==NULL) {
+ debug("No suitable client data");
+ return(0);;
+ }
+ if (gssapi_client.mech && gssapi_client.mech->localname) {
+ return((*gssapi_client.mech->localname)(&gssapi_client,user));
+ } else {
+ debug("Unknown client authentication type");
+ }
+ return(0);
+}
+
+ /* These bits are only used for rekeying. The unpriviledged child is running
+ * as the user, the monitor is root.
+ *
+ * In the child, we want to :
+ * *) Ask the monitor to store our credentials into the store we specify
+ * *) If it succeeds, maybe do a PAM update
+ */
+
+ /* Stuff for PAM */
+
+ #ifdef USE_PAM
+ static int ssh_gssapi_simple_conv(int n, const struct pam_message **msg,
+ struct pam_response **resp, void *data)
+ {
+ return (PAM_CONV_ERR);
+ }
+ #endif
+
+ void
+ ssh_gssapi_rekey_creds() {
+ int ok;
+ int ret;
+ #ifdef USE_PAM
+ pam_handle_t *pamh = NULL;
+ struct pam_conv pamconv = {ssh_gssapi_simple_conv, NULL};
+ char *envstr;
+ #endif
+
+ if (gssapi_client.store.filename == NULL &&
+ gssapi_client.store.envval == NULL &&
+ gssapi_client.store.envvar == NULL)
+ return;
+
+ ok = PRIVSEP(ssh_gssapi_update_creds(&gssapi_client.store));
+
+ if (!ok)
+ return;
+
+ debug("Rekeyed credentials stored successfully");
+
+ /* Actually managing to play with the ssh pam stack from here will
+ * be next to impossible. In any case, we may want different options
+ * for rekeying. So, use our own :)
+ */
+ #ifdef USE_PAM
+ if (!use_privsep) {
+ debug("Not even going to try and do PAM with privsep disabled");
+ return;
+ }
+
+ ret = pam_start("sshd-rekey", gssapi_client.store.owner->pw_name,
+ &pamconv, &pamh);
+ if (ret)
+ return;
+
+ xasprintf(&envstr, "%s=%s", gssapi_client.store.envvar,
+ gssapi_client.store.envval);
+
+ ret = pam_putenv(pamh, envstr);
+ if (!ret)
+ pam_setcred(pamh, PAM_REINITIALIZE_CRED);
+ pam_end(pamh, PAM_SUCCESS);
+ #endif
+ }
+
+ int
+ ssh_gssapi_update_creds(ssh_gssapi_ccache *store) {
+ int ok = 0;
+
+ /* Check we've got credentials to store */
+ if (!gssapi_client.updated)
+ return 0;
+
+ gssapi_client.updated = 0;
+
+ temporarily_use_uid(gssapi_client.store.owner);
+ if (gssapi_client.mech && gssapi_client.mech->updatecreds)
+ ok = (*gssapi_client.mech->updatecreds)(store, &gssapi_client);
+ else
+ debug("No update function for this mechanism");
+
+ restore_uid();
+
+ return ok;
+ }
+
#endif
Mac mac;
Comp comp;
};
+
struct Kex {
u_char *session_id;
u_int session_id_len;
int gss_deleg_creds;
int gss_trust_dns;
char *gss_host;
+ char *gss_client;
#endif
char *client_version_string;
char *server_version_string;
/*
- * Copyright (c) 2001-2006 Simon Wilkinson. All rights reserved.
+ * Copyright (c) 2001-2009 Simon Wilkinson. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
#include "dh.h"
#include "ssh-gss.h"
#include "monitor_wrap.h"
+ #include "servconf.h"
+static void kex_gss_send_error(Gssctxt *ctxt);
+ extern ServerOptions options;
void
kexgss_server(Kex *kex)
BIGNUM *dh_client_pub = NULL;
int type = 0;
gss_OID oid;
+ char *mechs;
/* Initialise GSSAPI */
* into life
*/
if (!ssh_gssapi_oid_table_ok())
- ssh_gssapi_server_mechanisms();
+ if ((mechs = ssh_gssapi_server_mechanisms()))
+ xfree(mechs);
debug2("%s: Identifying %s", __func__, kex->name);
oid = ssh_gssapi_id_kex(NULL, kex->name, kex->kex_type);
debug2("%s: Acquiring credentials", __func__);
- if (GSS_ERROR(PRIVSEP(ssh_gssapi_server_ctx(&ctxt, oid))))
+ if (GSS_ERROR(PRIVSEP(ssh_gssapi_server_ctx(&ctxt, oid)))) {
+ kex_gss_send_error(ctxt);
fatal("Unable to acquire credentials for the server");
+ }
switch (kex->kex_type) {
case KEX_GSS_GRP1_SHA1:
if (maj_status & GSS_S_CONTINUE_NEEDED) {
debug("Sending GSSAPI_CONTINUE");
packet_start(SSH2_MSG_KEXGSS_CONTINUE);
-- packet_put_string(send_tok.value, send_tok.length);
++ packet_put_string((char *)send_tok.value, send_tok.length);
packet_send();
gss_release_buffer(&min_status, &send_tok);
}
} while (maj_status & GSS_S_CONTINUE_NEEDED);
if (GSS_ERROR(maj_status)) {
+ kex_gss_send_error(ctxt);
if (send_tok.length > 0) {
packet_start(SSH2_MSG_KEXGSS_CONTINUE);
-- packet_put_string(send_tok.value, send_tok.length);
++ packet_put_string((char *)send_tok.value, send_tok.length);
packet_send();
}
- fatal("accept_ctx died");
+ packet_disconnect("GSSAPI Key Exchange handshake failed");
}
if (!(ret_flags & GSS_C_MUTUAL_FLAG))
klen = DH_size(dh);
kbuf = xmalloc(klen);
kout = DH_compute_key(kbuf, dh_client_pub, dh);
+ if (kout < 0)
+ fatal("DH_compute_key: failed");
shared_secret = BN_new();
- BN_bin2bn(kbuf, kout, shared_secret);
+ if (shared_secret == NULL)
+ fatal("kexgss_server: BN_new failed");
+
+ if (BN_bin2bn(kbuf, kout, shared_secret) == NULL)
+ fatal("kexgss_server: BN_bin2bn failed");
+
memset(kbuf, 0, klen);
xfree(kbuf);
fatal("%s: Unexpected KEX type %d", __func__, kex->kex_type);
}
- BN_free(dh_client_pub);
+ BN_clear_free(dh_client_pub);
if (kex->session_id == NULL) {
kex->session_id_len = hashlen;
packet_start(SSH2_MSG_KEXGSS_COMPLETE);
packet_put_bignum2(dh->pub_key);
- packet_put_string(msg_tok.value,msg_tok.length);
+ packet_put_string((char *)msg_tok.value,msg_tok.length);
if (send_tok.length != 0) {
packet_put_char(1); /* true */
- packet_put_string(send_tok.value, send_tok.length);
+ packet_put_string((char *)send_tok.value, send_tok.length);
} else {
packet_put_char(0); /* false */
}
kex_derive_keys(kex, hash, hashlen, shared_secret);
BN_clear_free(shared_secret);
kex_finish(kex);
+
+ /* If this was a rekey, then save out any delegated credentials we
+ * just exchanged. */
+ if (options.gss_store_rekey)
+ ssh_gssapi_rekey_creds();
}
+
+static void
+kex_gss_send_error(Gssctxt *ctxt) {
+ char *errstr;
+ OM_uint32 maj,min;
+
+ errstr=PRIVSEP(ssh_gssapi_last_error(ctxt,&maj,&min));
+ if (errstr) {
+ packet_start(SSH2_MSG_KEXGSS_ERROR);
+ packet_put_int(maj);
+ packet_put_int(min);
+ packet_put_cstring(errstr);
+ packet_put_cstring("");
+ packet_send();
+ packet_write_wait();
+ /* XXX - We should probably log the error locally here */
+ xfree(errstr);
+ }
+}
#endif /* GSSAPI */
int mm_answer_gss_userok(int, Buffer *);
int mm_answer_gss_checkmic(int, Buffer *);
int mm_answer_gss_sign(int, Buffer *);
+int mm_answer_gss_error(int, Buffer *);
+int mm_answer_gss_indicate_mechs(int, Buffer *);
+int mm_answer_gss_localname(int, Buffer *);
+ int mm_answer_gss_updatecreds(int, Buffer *);
#endif
#ifdef SSH_AUDIT_EVENTS
struct mon_table mon_dispatch_proto20[] = {
{MONITOR_REQ_MODULI, MON_ONCE, mm_answer_moduli},
{MONITOR_REQ_SIGN, MON_ONCE, mm_answer_sign},
- {MONITOR_REQ_PWNAM, MON_ONCE, mm_answer_pwnamallow},
+ {MONITOR_REQ_PWNAM, MON_AUTH, mm_answer_pwnamallow},
{MONITOR_REQ_AUTHSERV, MON_ONCE, mm_answer_authserv},
{MONITOR_REQ_AUTH2_READ_BANNER, MON_ONCE, mm_answer_auth2_read_banner},
{MONITOR_REQ_AUTHPASSWORD, MON_AUTH, mm_answer_authpassword},
#ifdef USE_PAM
- {MONITOR_REQ_PAM_START, MON_ONCE, mm_answer_pam_start},
+ {MONITOR_REQ_PAM_START, MON_ISAUTH, mm_answer_pam_start},
{MONITOR_REQ_PAM_ACCOUNT, 0, mm_answer_pam_account},
{MONITOR_REQ_PAM_INIT_CTX, MON_ISAUTH, mm_answer_pam_init_ctx},
{MONITOR_REQ_PAM_QUERY, MON_ISAUTH, mm_answer_pam_query},
{MONITOR_REQ_GSSUSEROK, MON_AUTH, mm_answer_gss_userok},
{MONITOR_REQ_GSSCHECKMIC, MON_ISAUTH, mm_answer_gss_checkmic},
{MONITOR_REQ_GSSSIGN, MON_ONCE, mm_answer_gss_sign},
+ {MONITOR_REQ_GSSERR, MON_ISAUTH | MON_ONCE, mm_answer_gss_error},
+ {MONITOR_REQ_GSSMECHS, MON_ISAUTH, mm_answer_gss_indicate_mechs},
+ {MONITOR_REQ_GSSLOCALNAME, MON_ISAUTH, mm_answer_gss_localname},
#endif
#ifdef JPAKE
{MONITOR_REQ_JPAKE_GET_PWDATA, MON_ONCE, mm_answer_jpake_get_pwdata},
{MONITOR_REQ_GSSSETUP, 0, mm_answer_gss_setup_ctx},
{MONITOR_REQ_GSSSTEP, 0, mm_answer_gss_accept_ctx},
{MONITOR_REQ_GSSSIGN, 0, mm_answer_gss_sign},
+ {MONITOR_REQ_GSSERR, 0, mm_answer_gss_error},
+ {MONITOR_REQ_GSSMECHS, 0, mm_answer_gss_indicate_mechs},
+ {MONITOR_REQ_GSSUPCREDS, 0, mm_answer_gss_updatecreds},
#endif
{MONITOR_REQ_MODULI, 0, mm_answer_moduli},
{MONITOR_REQ_SIGN, 0, mm_answer_sign},
{MONITOR_REQ_SKEYQUERY, MON_ISAUTH, mm_answer_skeyquery},
{MONITOR_REQ_SKEYRESPOND, MON_AUTH, mm_answer_skeyrespond},
#endif
+#ifdef GSSAPI
+ {MONITOR_REQ_GSSSETUP, MON_ISAUTH, mm_answer_gss_setup_ctx},
+ {MONITOR_REQ_GSSSTEP, MON_ISAUTH, mm_answer_gss_accept_ctx},
+ {MONITOR_REQ_GSSSIGN, MON_ONCE, mm_answer_gss_sign},
+ {MONITOR_REQ_GSSUSEROK, MON_AUTH, mm_answer_gss_userok},
+ {MONITOR_REQ_GSSMECHS, MON_ISAUTH, mm_answer_gss_indicate_mechs},
+#endif
#ifdef USE_PAM
- {MONITOR_REQ_PAM_START, MON_ONCE, mm_answer_pam_start},
+ {MONITOR_REQ_PAM_START, MON_ISAUTH, mm_answer_pam_start},
{MONITOR_REQ_PAM_ACCOUNT, 0, mm_answer_pam_account},
{MONITOR_REQ_PAM_INIT_CTX, MON_ISAUTH, mm_answer_pam_init_ctx},
{MONITOR_REQ_PAM_QUERY, MON_ISAUTH, mm_answer_pam_query},
/* Permit requests for moduli and signatures */
monitor_permit(mon_dispatch, MONITOR_REQ_MODULI, 1);
monitor_permit(mon_dispatch, MONITOR_REQ_SIGN, 1);
-#ifdef GSSAPI
+#ifdef GSSAPI
/* and for the GSSAPI key exchange */
monitor_permit(mon_dispatch, MONITOR_REQ_GSSSETUP, 1);
+ monitor_permit(mon_dispatch, MONITOR_REQ_GSSERR, 1);
+ monitor_permit(mon_dispatch, MONITOR_REQ_GSSMECHS, 1);
#endif
} else {
mon_dispatch = mon_dispatch_proto15;
monitor_permit(mon_dispatch, MONITOR_REQ_MODULI, 1);
monitor_permit(mon_dispatch, MONITOR_REQ_SIGN, 1);
monitor_permit(mon_dispatch, MONITOR_REQ_TERM, 1);
+
#ifdef GSSAPI
/* and for the GSSAPI key exchange */
- monitor_permit(mon_dispatch, MONITOR_REQ_GSSSETUP, 1);
-#endif
+ monitor_permit(mon_dispatch, MONITOR_REQ_GSSMECHS,1);
+ monitor_permit(mon_dispatch, MONITOR_REQ_GSSSETUP,1);
+ monitor_permit(mon_dispatch, MONITOR_REQ_GSSERR,1);
+#endif
+
} else {
mon_dispatch = mon_dispatch_postauth15;
monitor_permit(mon_dispatch, MONITOR_REQ_TERM, 1);
}
+#ifdef GSSAPI
+ monitor_permit(mon_dispatch, MONITOR_REQ_GSSERR, 1);
+#endif
if (!no_pty_flag) {
monitor_permit(mon_dispatch, MONITOR_REQ_PTY, 1);
monitor_permit(mon_dispatch, MONITOR_REQ_PTYCLEANUP, 1);
debug3("%s", __func__);
- if (authctxt->attempt++ != 0)
- fatal("%s: multiple attempts for getpwnam", __func__);
-
username = buffer_get_string(m, NULL);
pwent = getpwnamallow(username);
+ if (authctxt->user) xfree(authctxt->user);
authctxt->user = xstrdup(username);
setproctitle("%s [priv]", pwent ? username : "unknown");
xfree(username);
kex->kex[KEX_DH_GEX_SHA1] = kexgex_server;
kex->kex[KEX_DH_GEX_SHA256] = kexgex_server;
#ifdef GSSAPI
- kex->kex[KEX_GSS_GRP1_SHA1] = kexgss_server;
- kex->kex[KEX_GSS_GRP14_SHA1] = kexgss_server;
- kex->kex[KEX_GSS_GEX_SHA1] = kexgss_server;
+ if (options.gss_keyex) {
+ kex->kex[KEX_GSS_GRP1_SHA1] = kexgss_server;
+ kex->kex[KEX_GSS_GRP14_SHA1] = kexgss_server;
+ kex->kex[KEX_GSS_GEX_SHA1] = kexgss_server;
+ }
#endif
kex->server = 1;
kex->hostkey_type = buffer_get_int(m);
OM_uint32 major;
u_int len;
+ if (!options.gss_authentication && !options.gss_keyex)
+ fatal("In GSSAPI monitor when GSSAPI is disabled");
+
goid.elements = buffer_get_string(m, &len);
goid.length = len;
OM_uint32 flags = 0; /* GSI needs this */
u_int len;
+ if (!options.gss_authentication && !options.gss_keyex)
+ fatal("In GSSAPI monitor when GSSAPI is disabled");
+
in.value = buffer_get_string(m, &len);
in.length = len;
major = ssh_gssapi_accept_ctx(gsscontext, &in, &out, &flags);
if (major == GSS_S_COMPLETE) {
monitor_permit(mon_dispatch, MONITOR_REQ_GSSSTEP, 0);
monitor_permit(mon_dispatch, MONITOR_REQ_GSSUSEROK, 1);
+ monitor_permit(mon_dispatch, MONITOR_REQ_GSSSIGN, 1);
monitor_permit(mon_dispatch, MONITOR_REQ_GSSCHECKMIC, 1);
monitor_permit(mon_dispatch, MONITOR_REQ_GSSSIGN, 1);
}
OM_uint32 ret;
u_int len;
+ if (!options.gss_authentication && !options.gss_keyex)
+ fatal("In GSSAPI monitor when GSSAPI is disabled");
+
gssbuf.value = buffer_get_string(m, &len);
gssbuf.length = len;
mic.value = buffer_get_string(m, &len);
{
int authenticated;
- authenticated = authctxt->valid && ssh_gssapi_userok(authctxt->user);
+ if (!options.gss_authentication && !options.gss_keyex)
+ fatal("In GSSAPI monitor when GSSAPI is disabled");
+
+ authenticated = authctxt->valid &&
+ ssh_gssapi_userok(authctxt->user, authctxt->pw);
buffer_clear(m);
buffer_put_int(m, authenticated);
return (authenticated);
}
- int
- mm_answer_gss_sign(int socket, Buffer *m)
- {
- gss_buffer_desc data;
- gss_buffer_desc hash = GSS_C_EMPTY_BUFFER;
- OM_uint32 major, minor;
- u_int len;
-
- data.value = buffer_get_string(m, &len);
- data.length = len;
- if (data.length != 20)
- fatal("%s: data length incorrect: %d", __func__, (int)data.length);
-
- /* Save the session ID on the first time around */
- if (session_id2_len == 0) {
- session_id2_len = data.length;
- session_id2 = xmalloc(session_id2_len);
- memcpy(session_id2, data.value, session_id2_len);
- }
- major = ssh_gssapi_sign(gsscontext, &data, &hash);
-
- xfree(data.value);
-
- buffer_clear(m);
- buffer_put_int(m, major);
- buffer_put_string(m, hash.value, hash.length);
-
- mm_request_send(socket, MONITOR_ANS_GSSSIGN, m);
-
- gss_release_buffer(&minor, &hash);
-
- /* Turn on getpwnam permissions */
- monitor_permit(mon_dispatch, MONITOR_REQ_PWNAM, 1);
-
- return (0);
- }
-
+int
+mm_answer_gss_error(int socket, Buffer *m) {
+ OM_uint32 major,minor;
+ char *msg;
+
+ msg=ssh_gssapi_last_error(gsscontext,&major,&minor);
+ buffer_clear(m);
+ buffer_put_int(m,major);
+ buffer_put_int(m,minor);
+ buffer_put_cstring(m,msg);
+
+ mm_request_send(socket,MONITOR_ANS_GSSERR,m);
+
+ xfree(msg);
+
+ return(0);
+}
+
+int
+mm_answer_gss_indicate_mechs(int socket, Buffer *m) {
+ OM_uint32 major,minor;
+ gss_OID_set mech_set;
+ size_t i;
+
+ major=gss_indicate_mechs(&minor, &mech_set);
+
+ buffer_clear(m);
+ buffer_put_int(m, major);
+ buffer_put_int(m, mech_set->count);
+ for (i=0; i < mech_set->count; i++) {
+ buffer_put_string(m, mech_set->elements[i].elements,
+ mech_set->elements[i].length);
+ }
+
+#if !defined(MECHGLUE) /* mechglue memory management bug ??? */
+ gss_release_oid_set(&minor,&mech_set);
+#endif
+
+ mm_request_send(socket,MONITOR_ANS_GSSMECHS,m);
+
+ return(0);
+}
+
+int
+mm_answer_gss_localname(int socket, Buffer *m) {
+ char *name;
+
+ ssh_gssapi_localname(&name);
+
+ buffer_clear(m);
+ if (name) {
+ buffer_put_cstring(m, name);
+ debug3("%s: sending result %s", __func__, name);
+ xfree(name);
+ } else {
+ buffer_put_cstring(m, "");
+ debug3("%s: sending result \"\"", __func__);
+ }
+
+ mm_request_send(socket, MONITOR_ANS_GSSLOCALNAME, m);
+
+ return(0);
+}
++
+ int
+ mm_answer_gss_sign(int socket, Buffer *m)
+ {
+ gss_buffer_desc data;
+ gss_buffer_desc hash = GSS_C_EMPTY_BUFFER;
+ OM_uint32 major, minor;
+ u_int len;
+
+ if (!options.gss_authentication && !options.gss_keyex)
+ fatal("In GSSAPI monitor when GSSAPI is disabled");
+
+ data.value = buffer_get_string(m, &len);
+ data.length = len;
+ if (data.length != 20)
+ fatal("%s: data length incorrect: %d", __func__,
+ (int) data.length);
+
+ /* Save the session ID on the first time around */
+ if (session_id2_len == 0) {
+ session_id2_len = data.length;
+ session_id2 = xmalloc(session_id2_len);
+ memcpy(session_id2, data.value, session_id2_len);
+ }
+ major = ssh_gssapi_sign(gsscontext, &data, &hash);
+
+ xfree(data.value);
+
+ buffer_clear(m);
+ buffer_put_int(m, major);
+ buffer_put_string(m, hash.value, hash.length);
+
+ mm_request_send(socket, MONITOR_ANS_GSSSIGN, m);
+
+ gss_release_buffer(&minor, &hash);
+
+ /* Turn on getpwnam permissions */
+ monitor_permit(mon_dispatch, MONITOR_REQ_PWNAM, 1);
+
+ /* And credential updating, for when rekeying */
+ monitor_permit(mon_dispatch, MONITOR_REQ_GSSUPCREDS, 1);
+
+ return (0);
+ }
+
+ int
+ mm_answer_gss_updatecreds(int socket, Buffer *m) {
+ ssh_gssapi_ccache store;
+ int ok;
+
+ store.filename = buffer_get_string(m, NULL);
+ store.envvar = buffer_get_string(m, NULL);
+ store.envval = buffer_get_string(m, NULL);
+
+ ok = ssh_gssapi_update_creds(&store);
+
+ xfree(store.filename);
+ xfree(store.envvar);
+ xfree(store.envval);
+
+ buffer_clear(m);
+ buffer_put_int(m, ok);
+
+ mm_request_send(socket, MONITOR_ANS_GSSUPCREDS, m);
+
+ return(0);
+ }
+
#endif /* GSSAPI */
#ifdef JPAKE
MONITOR_REQ_GSSSETUP, MONITOR_ANS_GSSSETUP,
MONITOR_REQ_GSSSTEP, MONITOR_ANS_GSSSTEP,
MONITOR_REQ_GSSUSEROK, MONITOR_ANS_GSSUSEROK,
+ MONITOR_REQ_GSSMECHS, MONITOR_ANS_GSSMECHS,
+ MONITOR_REQ_GSSLOCALNAME, MONITOR_ANS_GSSLOCALNAME,
+ MONITOR_REQ_GSSERR, MONITOR_ANS_GSSERR,
MONITOR_REQ_GSSCHECKMIC, MONITOR_ANS_GSSCHECKMIC,
MONITOR_REQ_GSSSIGN, MONITOR_ANS_GSSSIGN,
+ MONITOR_REQ_GSSUPCREDS, MONITOR_ANS_GSSUPCREDS,
MONITOR_REQ_PAM_START,
MONITOR_REQ_PAM_ACCOUNT, MONITOR_ANS_PAM_ACCOUNT,
MONITOR_REQ_PAM_INIT_CTX, MONITOR_ANS_PAM_INIT_CTX,
MONITOR_REQ_JPAKE_GET_PWDATA, MONITOR_ANS_JPAKE_GET_PWDATA,
MONITOR_REQ_JPAKE_STEP2, MONITOR_ANS_JPAKE_STEP2,
MONITOR_REQ_JPAKE_KEY_CONFIRM, MONITOR_ANS_JPAKE_KEY_CONFIRM,
- MONITOR_REQ_JPAKE_CHECK_CONFIRM, MONITOR_ANS_JPAKE_CHECK_CONFIRM,
+ MONITOR_REQ_JPAKE_CHECK_CONFIRM, MONITOR_ANS_JPAKE_CHECK_CONFIRM
};
struct mm_master;
}
int
- mm_ssh_gssapi_userok(char *user)
+ mm_ssh_gssapi_userok(char *user, struct passwd *pw)
{
Buffer m;
int authenticated = 0;
return (authenticated);
}
- OM_uint32
- mm_ssh_gssapi_sign(Gssctxt *ctx, gss_buffer_desc *data, gss_buffer_desc *hash)
- {
- Buffer m;
- OM_uint32 major;
- u_int len;
-
- buffer_init(&m);
- buffer_put_string(&m, data->value, data->length);
-
- mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSSIGN, &m);
- mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSSIGN, &m);
-
- major = buffer_get_int(&m);
- hash->value = buffer_get_string(&m, &len);
- hash->length = len;
-
- buffer_free(&m);
-
- return(major);
- }
-
+char *
+mm_ssh_gssapi_last_error(Gssctxt *ctx, OM_uint32 *major, OM_uint32 *minor) {
+ Buffer m;
+ OM_uint32 maj,min;
+ char *errstr;
+
+ buffer_init(&m);
+
+ mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSERR, &m);
+ mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSERR, &m);
+
+ maj = buffer_get_int(&m);
+ min = buffer_get_int(&m);
+
+ if (major) *major=maj;
+ if (minor) *minor=min;
+
+ errstr=buffer_get_string(&m,NULL);
+
+ buffer_free(&m);
+
+ return(errstr);
+}
+
+OM_uint32
+mm_gss_indicate_mechs(OM_uint32 *minor_status, gss_OID_set *mech_set)
+{
+ Buffer m;
+ OM_uint32 major,minor;
+ int count;
+ gss_OID_desc oid;
+ u_int length;
+
+ buffer_init(&m);
+
+ mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSMECHS, &m);
+ mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSMECHS,
+ &m);
+ major=buffer_get_int(&m);
+ count=buffer_get_int(&m);
+
+ gss_create_empty_oid_set(&minor,mech_set);
+ while(count-->0) {
+ oid.elements=buffer_get_string(&m,&length);
+ oid.length=length;
+ gss_add_oid_set_member(&minor,&oid,mech_set);
+ }
+
+ buffer_free(&m);
+
+ return(major);
+}
+
+int
+mm_ssh_gssapi_localname(char **lname)
+{
+ Buffer m;
+
+ buffer_init(&m);
+ mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSLOCALNAME, &m);
+
+ debug3("%s: waiting for MONITOR_ANS_GSSLOCALNAME", __func__);
+ mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSLOCALNAME,
+ &m);
+
+ *lname = buffer_get_string(&m, NULL);
+
+ buffer_free(&m);
+ if (lname[0] == '\0') {
+ debug3("%s: gssapi identity mapping failed", __func__);
+ } else {
+ debug3("%s: gssapi identity mapped to %s", __func__, *lname);
+ }
+
+ return(0);
+}
+
+ OM_uint32
+ mm_ssh_gssapi_sign(Gssctxt *ctx, gss_buffer_desc *data, gss_buffer_desc *hash)
+ {
+ Buffer m;
+ OM_uint32 major;
+ u_int len;
+
+ buffer_init(&m);
+ buffer_put_string(&m, data->value, data->length);
+
+ mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSSIGN, &m);
+ mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSSIGN, &m);
+
+ major = buffer_get_int(&m);
+ hash->value = buffer_get_string(&m, &len);
+ hash->length = len;
+
+ buffer_free(&m);
+
+ return(major);
+ }
+
+ int
+ mm_ssh_gssapi_update_creds(ssh_gssapi_ccache *store)
+ {
+ Buffer m;
+ int ok;
+
+ buffer_init(&m);
+
+ buffer_put_cstring(&m, store->filename ? store->filename : "");
+ buffer_put_cstring(&m, store->envvar ? store->envvar : "");
+ buffer_put_cstring(&m, store->envval ? store->envval : "");
+
+ mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_GSSUPCREDS, &m);
+ mm_request_receive_expect(pmonitor->m_recvfd, MONITOR_ANS_GSSUPCREDS, &m);
+
+ ok = buffer_get_int(&m);
+
+ buffer_free(&m);
+
+ return (ok);
+ }
+
#endif /* GSSAPI */
#ifdef JPAKE
OM_uint32 mm_ssh_gssapi_server_ctx(Gssctxt **, gss_OID);
OM_uint32 mm_ssh_gssapi_accept_ctx(Gssctxt *,
gss_buffer_desc *, gss_buffer_desc *, OM_uint32 *);
- int mm_ssh_gssapi_userok(char *user);
+ int mm_ssh_gssapi_userok(char *user, struct passwd *);
OM_uint32 mm_ssh_gssapi_checkmic(Gssctxt *, gss_buffer_t, gss_buffer_t);
OM_uint32 mm_ssh_gssapi_sign(Gssctxt *, gss_buffer_t, gss_buffer_t);
+int mm_ssh_gssapi_localname(char **user);
+OM_uint32 mm_gss_indicate_mechs(OM_uint32 *minor_status,
+ gss_OID_set *mech_set);
+char *mm_ssh_gssapi_last_error(Gssctxt *ctxt, OM_uint32 *maj, OM_uint32 *min);
+ int mm_ssh_gssapi_update_creds(ssh_gssapi_ccache *);
#endif
#ifdef USE_PAM
oClearAllForwardings, oNoHostAuthenticationForLocalhost,
oEnableSSHKeysign, oRekeyLimit, oVerifyHostKeyDNS, oConnectTimeout,
oAddressFamily, oGssAuthentication, oGssDelegateCreds,
- oGssKeyEx,
- oGssTrustDns,
+ oGssTrustDns, oGssKeyEx, oGssClientIdentity, oGssRenewalRekey,
oServerAliveInterval, oServerAliveCountMax, oIdentitiesOnly,
oSendEnv, oControlPath, oControlMaster, oHashKnownHosts,
oTunnel, oTunnelDevice, oLocalCommand, oPermitLocalCommand,
{ "gssapikeyexchange", oGssKeyEx },
{ "gssapidelegatecredentials", oGssDelegateCreds },
{ "gssapitrustdns", oGssTrustDns },
+ { "gssapiclientidentity", oGssClientIdentity },
+ { "gssapirenewalforcesrekey", oGssRenewalRekey },
#else
{ "gssapiauthentication", oUnsupported },
{ "gssapikeyexchange", oUnsupported },
{ "gssapidelegatecredentials", oUnsupported },
{ "gssapitrustdns", oUnsupported },
+ { "gssapiclientidentity", oUnsupported },
+ { "gssapirenewalforcesrekey", oUnsupported },
#endif
{ "fallbacktorsh", oDeprecated },
{ "usersh", oDeprecated },
{ "tunneldevice", oTunnelDevice },
{ "localcommand", oLocalCommand },
{ "permitlocalcommand", oPermitLocalCommand },
- { "noneenabled", oNoneEnabled },
- { "tcprcvbufpoll", oTcpRcvBufPoll },
- { "tcprcvbuf", oTcpRcvBuf },
- { "noneswitch", oNoneSwitch },
- { "hpndisabled", oHPNDisabled },
- { "hpnbuffersize", oHPNBufferSize },
{ "visualhostkey", oVisualHostKey },
- { "noneenabled", oNoneEnabled },
- { "tcprcvbufpoll", oTcpRcvBufPoll },
- { "tcprcvbuf", oTcpRcvBuf },
- { "noneswitch", oNoneSwitch },
- { "hpndisabled", oHPNDisabled },
- { "hpnbuffersize", oHPNBufferSize },
#ifdef JPAKE
{ "zeroknowledgepasswordauthentication",
oZeroKnowledgePasswordAuthentication },
#else
{ "zeroknowledgepasswordauthentication", oUnsupported },
#endif
-
+ { "noneenabled", oNoneEnabled },
+ { "tcprcvbufpoll", oTcpRcvBufPoll },
+ { "tcprcvbuf", oTcpRcvBuf },
+ { "noneswitch", oNoneSwitch },
+ { "hpndisabled", oHPNDisabled },
+ { "hpnbuffersize", oHPNBufferSize },
{ NULL, oBadOption }
};
goto parse_flag;
case oGssKeyEx:
- intptr = &options->gss_keyex;
+ intptr = &options->gss_keyex;
goto parse_flag;
case oGssDelegateCreds:
intptr = &options->gss_trust_dns;
goto parse_flag;
+ case oGssClientIdentity:
+ charptr = &options->gss_client_identity;
+ goto parse_string;
+
+ case oGssRenewalRekey:
+ intptr = &options->gss_renewal_rekey;
+ goto parse_flag;
+
case oBatchMode:
intptr = &options->batch_mode;
goto parse_flag;
options->gss_keyex = -1;
options->gss_deleg_creds = -1;
options->gss_trust_dns = -1;
+ options->gss_renewal_rekey = -1;
+ options->gss_client_identity = NULL;
options->password_authentication = -1;
options->kbd_interactive_authentication = -1;
options->kbd_interactive_devices = NULL;
options->tun_remote = -1;
options->local_command = NULL;
options->permit_local_command = -1;
+ options->none_switch = -1;
+ options->none_enabled = -1;
+ options->hpn_disabled = -1;
+ options->hpn_buffer_size = -1;
+ options->tcp_rcv_buf_poll = -1;
+ options->tcp_rcv_buf = -1;
options->visual_host_key = -1;
+ options->none_switch = -1;
+ options->none_enabled = -1;
+ options->hpn_disabled = -1;
+ options->hpn_buffer_size = -1;
+ options->tcp_rcv_buf_poll = -1;
+ options->tcp_rcv_buf = -1;
options->zero_knowledge_password_authentication = -1;
+ options->none_switch = -1;
+ options->none_enabled = -1;
+ options->hpn_disabled = -1;
+ options->hpn_buffer_size = -1;
+ options->tcp_rcv_buf_poll = -1;
+ options->tcp_rcv_buf = -1;
}
/*
if (options->challenge_response_authentication == -1)
options->challenge_response_authentication = 1;
if (options->gss_authentication == -1)
- options->gss_authentication = 0;
+ options->gss_authentication = 1;
if (options->gss_keyex == -1)
- options->gss_keyex = 0;
+ options->gss_keyex = 1;
if (options->gss_deleg_creds == -1)
- options->gss_deleg_creds = 0;
+ options->gss_deleg_creds = 1;
if (options->gss_trust_dns == -1)
- options->gss_trust_dns = 0;
+ options->gss_trust_dns = 1;
+ if (options->gss_renewal_rekey == -1)
+ options->gss_renewal_rekey = 0;
if (options->password_authentication == -1)
options->password_authentication = 1;
if (options->kbd_interactive_authentication == -1)
int challenge_response_authentication;
/* Try S/Key or TIS, authentication. */
int gss_authentication; /* Try GSS authentication */
- int gss_keyex; /* Try GSS key exchange */
+ int gss_keyex; /* Try GSS key exchange */
int gss_deleg_creds; /* Delegate GSS credentials */
int gss_trust_dns; /* Trust DNS for GSS canonicalization */
+ int gss_renewal_rekey; /* Credential renewal forces rekey */
+ char *gss_client_identity; /* Principal to initiate GSSAPI with */
int password_authentication; /* Try password
* authentication. */
int kbd_interactive_authentication; /* Try keyboard-interactive auth. */
char *host_key_alias; /* hostname alias for .ssh/known_hosts */
char *proxy_command; /* Proxy command for connecting the host. */
char *user; /* User to log in as. */
+ int implicit; /* Login user was not specified.
+ Server may choose based on authctxt. */
int escape_char; /* Escape character; -2 = none */
char *system_hostfile;/* Path for /etc/ssh/ssh_known_hosts. */
/* Portable-specific options */
options->use_pam = -1;
+ options->permit_pam_user_change = -1;
/* Standard Options */
options->num_ports = 0;
options->kerberos_authentication = -1;
options->kerberos_or_local_passwd = -1;
options->kerberos_ticket_cleanup = -1;
+#ifdef SESSION_HOOKS
+ options->session_hooks_allow = -1;
+ options->session_hooks_startup_cmd = NULL;
+ options->session_hooks_shutdown_cmd = NULL;
+#endif
options->kerberos_get_afs_token = -1;
- options->gss_authentication=-1;
+ options->gss_authentication = -1;
+ options->gss_deleg_creds = -1;
options->gss_keyex = -1;
options->gss_cleanup_creds = -1;
options->gss_strict_acceptor = -1;
+ options->gsi_allow_limited_proxy = -1;
+ options->gss_store_rekey = -1;
options->password_authentication = -1;
options->kbd_interactive_authentication = -1;
options->challenge_response_authentication = -1;
options->num_permitted_opens = -1;
options->adm_forced_command = NULL;
options->chroot_directory = NULL;
+ options->zero_knowledge_password_authentication = -1;
options->none_enabled = -1;
options->tcp_rcv_buf_poll = -1;
options->hpn_disabled = -1;
options->hpn_buffer_size = -1;
- options->zero_knowledge_password_authentication = -1;
}
void
/* Portable-specific options */
if (options->use_pam == -1)
options->use_pam = 0;
+ if (options->permit_pam_user_change == -1)
+ options->permit_pam_user_change = 0;
/* Standard Options */
if (options->protocol == SSH_PROTO_UNKNOWN)
if (options->kerberos_get_afs_token == -1)
options->kerberos_get_afs_token = 0;
if (options->gss_authentication == -1)
- options->gss_authentication = 0;
+ options->gss_authentication = 1;
+ if (options->gss_deleg_creds == -1)
+ options->gss_deleg_creds = 1;
if (options->gss_keyex == -1)
- options->gss_keyex = 0;
+ options->gss_keyex = 1;
if (options->gss_cleanup_creds == -1)
options->gss_cleanup_creds = 1;
if (options->gss_strict_acceptor == -1)
options->gss_strict_acceptor = 1;
+ if (options->gsi_allow_limited_proxy == -1)
+ options->gsi_allow_limited_proxy = 0;
+ if (options->gss_store_rekey == -1)
+ options->gss_store_rekey = 0;
if (options->password_authentication == -1)
options->password_authentication = 1;
if (options->kbd_interactive_authentication == -1)
typedef enum {
sBadOption, /* == unknown option */
/* Portable-specific options */
- sUsePAM,
+ sUsePAM, sPermitPAMUserChange,
/* Standard Options */
sPort, sHostKeyFile, sServerKeyBits, sLoginGraceTime, sKeyRegenerationTime,
sPermitRootLogin, sLogFacility, sLogLevel,
sKerberosAuthentication, sKerberosOrLocalPasswd, sKerberosTicketCleanup,
sKerberosGetAFSToken,
sKerberosTgtPassing, sChallengeResponseAuthentication,
+#ifdef SESSION_HOOKS
+ sAllowSessionHooks, sSessionHookStartupCmd, sSessionHookShutdownCmd,
+#endif
sPasswordAuthentication, sKbdInteractiveAuthentication,
sListenAddress, sAddressFamily,
sPrintMotd, sPrintLastLog, sIgnoreRhosts,
sBanner, sUseDNS, sHostbasedAuthentication,
sHostbasedUsesNameFromPacketOnly, sClientAliveInterval,
sClientAliveCountMax, sAuthorizedKeysFile, sAuthorizedKeysFile2,
- sGssAuthentication, sGssCleanupCreds,
+ sGssDelegateCreds,
- sGssStrictAcceptor,
- sGssKeyEx,
+ sGssCredsPath,
+ sGsiAllowLimitedProxy,
- sAcceptEnv, sPermitTunnel,
+ sGssAuthentication, sGssCleanupCreds, sGssStrictAcceptor,
+ sGssKeyEx, sGssStoreRekey,
+ sAcceptEnv, sPermitTunnel,
sMatch, sPermitOpen, sForceCommand, sChrootDirectory,
sUsePrivilegeSeparation, sAllowAgentForwarding,
- sNoneEnabled, sTcpRcvBufPoll, sHPNDisabled, sHPNBufferSize,
sZeroKnowledgePasswordAuthentication,
+ sNoneEnabled, sTcpRcvBufPoll, sHPNDisabled, sHPNBufferSize,
sDeprecated, sUnsupported
} ServerOpCodes;
/* Portable-specific options */
#ifdef USE_PAM
{ "usepam", sUsePAM, SSHCFG_GLOBAL },
+ { "permitpamuserchange", sPermitPAMUserChange, SSHCFG_GLOBAL }
#else
{ "usepam", sUnsupported, SSHCFG_GLOBAL },
+ { "permitpamuserchange", sUnsupported, SSHCFG_GLOBAL },
#endif
{ "pamauthenticationviakbdint", sDeprecated, SSHCFG_GLOBAL },
/* Standard Options */
{ "afstokenpassing", sUnsupported, SSHCFG_GLOBAL },
#ifdef GSSAPI
{ "gssapiauthentication", sGssAuthentication, SSHCFG_ALL },
+ { "gssapidelegatecredentials", sGssDelegateCreds, SSHCFG_ALL },
{ "gssapicleanupcredentials", sGssCleanupCreds, SSHCFG_GLOBAL },
- { "gssapistrictacceptorcheck", sGssStrictAcceptor, SSHCFG_GLOBAL },
+ { "gssapicredentialspath", sGssCredsPath, SSHCFG_GLOBAL },
- { "gssapikeyexchange", sGssKeyEx, SSHCFG_GLOBAL },
+#ifdef GSI
+ { "gsiallowlimitedproxy", sGsiAllowLimitedProxy, SSHCFG_GLOBAL },
+#endif
+ { "gssapistrictacceptorcheck", sGssStrictAcceptor, SSHCFG_GLOBAL },
+ { "gssapikeyexchange", sGssKeyEx, SSHCFG_GLOBAL },
+ { "gssapistorecredentialsonrekey", sGssStoreRekey, SSHCFG_GLOBAL },
#else
{ "gssapiauthentication", sUnsupported, SSHCFG_ALL },
+ { "gssapidelegatecredentials", sUnsupported, SSHCFG_ALL },
{ "gssapicleanupcredentials", sUnsupported, SSHCFG_GLOBAL },
- { "gssapistrictacceptorcheck", sUnsupported, SSHCFG_GLOBAL },
+ { "gssapicredentialspath", sUnsupported, SSHCFG_GLOBAL },
- { "gssapikeyexchange", sUnsupported, SSHCFG_GLOBAL },
+#ifdef GSI
+ { "gsiallowlimitedproxy", sUnsupported, SSHCFG_GLOBAL },
+#endif
+ { "gssapistrictacceptorcheck", sUnsupported, SSHCFG_GLOBAL },
+ { "gssapikeyexchange", sUnsupported, SSHCFG_GLOBAL },
+ { "gssapistorecredentialsonrekey", sUnsupported, SSHCFG_GLOBAL },
#endif
+#ifdef SESSION_HOOKS
+ { "allowsessionhooks", sAllowSessionHooks, SSHCFG_GLOBAL },
+ { "sessionhookstartupcmd", sSessionHookStartupCmd, SSHCFG_GLOBAL },
+ { "sessionhookshutdowncmd", sSessionHookShutdownCmd, SSHCFG_GLOBAL },
+#endif
{ "passwordauthentication", sPasswordAuthentication, SSHCFG_ALL },
{ "kbdinteractiveauthentication", sKbdInteractiveAuthentication, SSHCFG_ALL },
{ "challengeresponseauthentication", sChallengeResponseAuthentication, SSHCFG_GLOBAL },
intptr = &options->use_pam;
goto parse_flag;
+ case sPermitPAMUserChange:
+ intptr = &options->permit_pam_user_change;
+ goto parse_flag;
+
/* Standard Options */
case sBadOption:
return -1;
intptr = &options->gss_authentication;
goto parse_flag;
+ case sGssDelegateCreds:
+ intptr = &options->gss_deleg_creds;
+ goto parse_flag;
+
case sGssKeyEx:
intptr = &options->gss_keyex;
goto parse_flag;
intptr = &options->gss_cleanup_creds;
goto parse_flag;
++ case sGssCredsPath:
++ charptr = &options->gss_creds_path;
++ goto parse_filename;
++
case sGssStrictAcceptor:
intptr = &options->gss_strict_acceptor;
goto parse_flag;
- case sGssCredsPath:
- charptr = &options->gss_creds_path;
- goto parse_filename;
+ case sGssStoreRekey:
+ intptr = &options->gss_store_rekey;
+ goto parse_flag;
++#ifdef GSI
+ case sGsiAllowLimitedProxy:
+ intptr = &options->gsi_allow_limited_proxy;
+ goto parse_flag;
++#endif
+
+#ifdef SESSION_HOOKS
+ case sAllowSessionHooks:
+ intptr = &options->session_hooks_allow;
+ goto parse_flag;
+ case sSessionHookStartupCmd:
+ case sSessionHookShutdownCmd:
+ arg = strdelim(&cp);
+ if (!arg || *arg == '\0')
+ fatal("%s line %d: empty session hook command",
+ filename, linenum);
+ if (opcode==sSessionHookStartupCmd)
+ options->session_hooks_startup_cmd = strdup(arg);
+ else
+ options->session_hooks_shutdown_cmd = strdup(arg);
+ break;
+#endif
+
case sPasswordAuthentication:
intptr = &options->password_authentication;
goto parse_flag;
{
M_CP_INTOPT(password_authentication);
M_CP_INTOPT(gss_authentication);
+ M_CP_INTOPT(gss_deleg_creds);
M_CP_INTOPT(rsa_authentication);
M_CP_INTOPT(pubkey_authentication);
M_CP_INTOPT(kerberos_authentication);
* /etc/passwd */
int kerberos_ticket_cleanup; /* If true, destroy ticket
* file on logout. */
+#ifdef SESSION_HOOKS
+ int session_hooks_allow; /* If true, permit user hooks */
+ char* session_hooks_startup_cmd; /* cmd to be executed before */
+ char* session_hooks_shutdown_cmd; /* cmd to be executed after */
+#endif
int kerberos_get_afs_token; /* If true, try to get AFS token if
* authenticated with Kerberos. */
++ int gsi_allow_limited_proxy; /* If true, accept limited proxies */
int gss_authentication; /* If true, permit GSSAPI authentication */
- int gss_keyex; /* If true, permit GSSAPI key exchange */
+ int gss_deleg_creds; /* If true, store delegated GSSAPI credentials*/
+ int gss_keyex; /* If true, permit GSSAPI key exchange */
int gss_cleanup_creds; /* If true, destroy cred cache on logout */
- int gss_strict_acceptor; /* If true, restrict the GSSAPI acceptor name */
+ char* gss_creds_path; /* If true, destroy cred cache on logout */
- int gsi_allow_limited_proxy; /* If true, accept limited proxies */
+ int gss_strict_acceptor; /* If true, restrict the GSSAPI acceptor name */
+ int gss_store_rekey;
int password_authentication; /* If true, permit password
* authentication. */
int kbd_interactive_authentication; /* If true, permit */
char *adm_forced_command;
int use_pam; /* Enable auth via PAM */
+ int permit_pam_user_change; /* Allow PAM to change user name */
int none_enabled; /* enable NONE cipher switch */
int tcp_rcv_buf_poll; /* poll tcp rcv window in autotuning kernels*/
int hpn_disabled; /* disable hpn functionality. false by default */
/* $OpenBSD: ssh-gss.h,v 1.10 2007/06/12 08:20:00 djm Exp $ */
/*
- * Copyright (c) 2001-2003 Simon Wilkinson. All rights reserved.
+ * Copyright (c) 2001-2009 Simon Wilkinson. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
#include <gssapi/gssapi.h>
#endif
+#ifndef MECHGLUE
#ifdef KRB5
# ifndef HEIMDAL
# ifdef HAVE_GSSAPI_GENERIC_H
#endif /* GSS_C_NT_... */
#endif /* !HEIMDAL */
#endif /* KRB5 */
+#endif /* !MECHGLUE */
/* draft-ietf-secsh-gsskeyex-06 */
#define SSH2_MSG_USERAUTH_GSSAPI_RESPONSE 60
char *filename;
char *envvar;
char *envval;
+ struct passwd *owner;
void *data;
} ssh_gssapi_ccache;
gss_buffer_desc displayname;
gss_buffer_desc exportedname;
gss_cred_id_t creds;
+ gss_name_t name;
struct ssh_gssapi_mech_struct *mech;
ssh_gssapi_ccache store;
+ gss_ctx_id_t context;
+ int used;
+ int updated;
} ssh_gssapi_client;
typedef struct ssh_gssapi_mech_struct {
int (*userok) (ssh_gssapi_client *, char *);
int (*localname) (ssh_gssapi_client *, char **);
void (*storecreds) (ssh_gssapi_client *);
+ int (*updatecreds) (ssh_gssapi_ccache *, ssh_gssapi_client *);
} ssh_gssapi_mech;
typedef struct {
OM_uint32 minor; /* both */
gss_ctx_id_t context; /* both */
gss_name_t name; /* both */
- gss_OID oid; /* client */
+ gss_OID oid; /* both */
gss_cred_id_t creds; /* server */
gss_name_t client; /* server */
- gss_cred_id_t client_creds; /* server */
+ gss_cred_id_t client_creds; /* both */
} Gssctxt;
extern ssh_gssapi_mech *supported_mechs[];
void ssh_gssapi_delete_ctx(Gssctxt **);
OM_uint32 ssh_gssapi_sign(Gssctxt *, gss_buffer_t, gss_buffer_t);
void ssh_gssapi_buildmic(Buffer *, const char *, const char *, const char *);
- int ssh_gssapi_check_mechanism(Gssctxt **, gss_OID, const char *);
+ int ssh_gssapi_check_mechanism(Gssctxt **, gss_OID, const char *, const char *);
+ OM_uint32 ssh_gssapi_client_identity(Gssctxt *, const char *);
+ int ssh_gssapi_credentials_updated(Gssctxt *);
+int ssh_gssapi_localname(char **name);
+
/* In the server */
- typedef int ssh_gssapi_check_fn(Gssctxt **, gss_OID, const char *);
- char *ssh_gssapi_client_mechanisms(const char *host);
- char *ssh_gssapi_kex_mechs(gss_OID_set, ssh_gssapi_check_fn *, const char *);
+ typedef int ssh_gssapi_check_fn(Gssctxt **, gss_OID, const char *,
+ const char *);
+ char *ssh_gssapi_client_mechanisms(const char *, const char *);
+ char *ssh_gssapi_kex_mechs(gss_OID_set, ssh_gssapi_check_fn *, const char *,
+ const char *);
gss_OID ssh_gssapi_id_kex(Gssctxt *, char *, int);
- int ssh_gssapi_server_check_mech(Gssctxt **,gss_OID, const char *);
+ int ssh_gssapi_server_check_mech(Gssctxt **,gss_OID, const char *,
+ const char *);
OM_uint32 ssh_gssapi_server_ctx(Gssctxt **, gss_OID);
- int ssh_gssapi_userok(char *name);
+ int ssh_gssapi_userok(char *name, struct passwd *);
OM_uint32 ssh_gssapi_checkmic(Gssctxt *, gss_buffer_t, gss_buffer_t);
void ssh_gssapi_do_child(char ***, u_int *);
void ssh_gssapi_cleanup_creds(void);
void ssh_gssapi_storecreds(void);
- char * ssh_gssapi_server_mechanisms(void);
- int ssh_gssapi_oid_table_ok();
+#ifdef MECHGLUE
+gss_cred_id_t __gss_get_mechanism_cred
+ (gss_cred_id_t, /* union_cred */
+ gss_OID /* mech_type */
+ );
+#endif
+
+ char *ssh_gssapi_server_mechanisms(void);
+ int ssh_gssapi_oid_table_ok();
+
+ int ssh_gssapi_update_creds(ssh_gssapi_ccache *store);
#endif /* GSSAPI */
#endif /* _SSH_GSS_H */
user's configuration file
.Pq Pa ~/.ssh/config
.It
+GSSAPI configuration file
+.Pq Pa $HOME/.ssh/config.gssapi
+.It
+Kerberos configuration file
+.Pq Pa $HOME/.ssh/config.krb
+.It
system-wide configuration file
.Pq Pa /etc/ssh/ssh_config
.El
.It Cm GSSAPIAuthentication
Specifies whether user authentication based on GSSAPI is allowed.
The default is
-.Dq no .
+.Dq yes .
Note that this option applies to protocol version 2 only.
.It Cm GSSAPIKeyExchange
Specifies whether key exchange based on GSSAPI may be used. When using
GSSAPI key exchange the server need not have a host key.
The default is
-.Dq no .
+.Dq yes .
Note that this option applies to protocol version 2 only.
+ .It Cm GSSAPIClientIdentity
+ If set, specifies the GSSAPI client identity that ssh should use when
+ connecting to the server. The default is unset, which means that the default
+ identity will be used.
.It Cm GSSAPIDelegateCredentials
Forward (delegate) credentials to the server.
The default is
-.Dq no .
+.Dq yes .
- Note that this option applies to protocol version 2 only.
+ Note that this option applies to protocol version 2 connections using GSSAPI.
+ .It Cm GSSAPIRenewalForcesRekey
+ If set to
+ .Dq yes
+ then renewal of the client's GSSAPI credentials will force the rekeying of the
+ ssh connection. With a compatible server, this can delegate the renewed
+ credentials to a session on the server.
+ The default is
-.Dq no .
++.Dq yes .
.It Cm GSSAPITrustDns
Set to
- .Dq yes
- to indicate that the DNS is trusted to securely canonicalize
+ .Dq yes to indicate that the DNS is trusted to securely canonicalize
the name of the host being connected to. If
- .Dq no ,
- the hostname entered on the
+ .Dq no, the hostname entered on the
command line will be passed untouched to the GSSAPI library.
The default is
-.Dq no .
+.Dq yes .
This option only applies to protocol version 2 connections using GSSAPI.
.It Cm HashKnownHosts
Indicates that
over another method (e.g.\&
.Cm password )
The default for this option is:
-.Do gssapi-with-mic ,
+.Do gssapi-keyex ,
+external-keyx,
+gssapi-with-mic,
hostbased,
publickey,
keyboard-interactive,
extern char *client_version_string;
extern char *server_version_string;
extern Options options;
+ extern Kex *xxx_kex;
+
+ /* tty_flag is set in ssh.c. use this in ssh_userauth2 */
+ /* if it is set then prevent the switch to the null cipher */
+
+ extern int tty_flag;
+/* tty_flag is set in ssh.c. use this in ssh_userauth2 */
+/* if it is set then prevent the switch to the null cipher */
+
+extern int tty_flag;
+
+/* tty_flag is set in ssh.c. use this in ssh_userauth2 */
+/* if it is set then prevent the switch to the null cipher */
+
+extern int tty_flag;
+
/*
* SSH2 key exchange
*/
else
gss_host = host;
- gss = ssh_gssapi_client_mechanisms(gss_host);
+ gss = ssh_gssapi_client_mechanisms(gss_host, options.gss_client_identity);
if (gss) {
debug("Offering GSSAPI proposal: %s", gss);
xasprintf(&myproposal[PROPOSAL_KEX_ALGS],
orig = myproposal[PROPOSAL_SERVER_HOST_KEY_ALGS];
xasprintf(&myproposal[PROPOSAL_SERVER_HOST_KEY_ALGS],
"%s,null", orig);
+ xfree(gss);
}
#endif
kex->kex[KEX_DH_GEX_SHA1] = kexgex_client;
kex->kex[KEX_DH_GEX_SHA256] = kexgex_client;
#ifdef GSSAPI
- kex->kex[KEX_GSS_GRP1_SHA1] = kexgss_client;
- kex->kex[KEX_GSS_GRP14_SHA1] = kexgss_client;
- kex->kex[KEX_GSS_GEX_SHA1] = kexgss_client;
+ if (options.gss_keyex) {
+ kex->kex[KEX_GSS_GRP1_SHA1] = kexgss_client;
+ kex->kex[KEX_GSS_GRP14_SHA1] = kexgss_client;
+ kex->kex[KEX_GSS_GEX_SHA1] = kexgss_client;
+ }
#endif
kex->client_version_string=client_version_string;
kex->server_version_string=server_version_string;
kex->verify_host_key=&verify_host_key_callback;
#ifdef GSSAPI
- kex->gss_deleg_creds = options.gss_deleg_creds;
- kex->gss_trust_dns = options.gss_trust_dns;
- kex->gss_host = gss_host;
+ if (options.gss_keyex) {
+ kex->gss_deleg_creds = options.gss_deleg_creds;
+ kex->gss_trust_dns = options.gss_trust_dns;
+ kex->gss_client = options.gss_client_identity;
+ kex->gss_host = gss_host;
+ }
#endif
xxx_kex = kex;
void userauth_jpake_cleanup(Authctxt *);
#ifdef GSSAPI
+int userauth_external(Authctxt *authctxt);
int userauth_gssapi(Authctxt *authctxt);
+int userauth_gssapi_with_mic(Authctxt *authctxt);
+int userauth_gssapi_without_mic(Authctxt *authctxt);
void input_gssapi_response(int type, u_int32_t, void *);
void input_gssapi_token(int type, u_int32_t, void *);
void input_gssapi_hash(int type, u_int32_t, void *);
#ifdef GSSAPI
{"gssapi-keyex",
userauth_gsskeyex,
+ NULL,
+ &options.gss_authentication,
+ NULL},
+ {"external-keyx",
+ userauth_external,
+ NULL,
&options.gss_authentication,
NULL},
{"gssapi-with-mic",
NULL,
&options.gss_authentication,
NULL},
+ {"gssapi",
+ userauth_gssapi,
+ NULL,
+ &options.gss_authentication,
+ NULL},
#endif
{"hostbased",
userauth_hostbased,
static u_int mech = 0;
OM_uint32 min;
int ok = 0;
- const char *gss_host;
+ char *gss_host = NULL;
+
+ if (!options.gss_authentication) {
+ verbose("GSSAPI authentication disabled.");
+ return 0;
+ }
if (options.gss_trust_dns)
- gss_host = get_canonical_hostname(1);
+ gss_host = (char *)get_canonical_hostname(1);
else
- gss_host = authctxt->host;
+ gss_host = (char *)authctxt->host;
/* Try one GSSAPI method at a time, rather than sending them all at
* once. */
if (gss_supported == NULL)
- gss_indicate_mechs(&min, &gss_supported);
+ if (GSS_ERROR(gss_indicate_mechs(&min, &gss_supported))) {
+ gss_supported = NULL;
+ return 0;
+ }
/* Check to see if the mechanism is usable before we offer it */
while (mech < gss_supported->count && !ok) {
/* My DER encoding requires length<128 */
if (gss_supported->elements[mech].length < 128 &&
ssh_gssapi_check_mechanism(&gssctxt,
- &gss_supported->elements[mech], gss_host)) {
+ &gss_supported->elements[mech], gss_host,
+ options.gss_client_identity)) {
ok = 1; /* Mechanism works */
} else {
mech++;
if (status == GSS_S_COMPLETE) {
/* send either complete or MIC, depending on mechanism */
- if (!(flags & GSS_C_INTEG_FLAG)) {
+ if (strcmp(authctxt->method->name,"gssapi")==0 ||
+ (!(flags & GSS_C_INTEG_FLAG))) {
packet_start(SSH2_MSG_USERAUTH_GSSAPI_EXCHANGE_COMPLETE);
packet_send();
} else {
xfree(lang);
}
- static int attempt = 0;
+#ifdef GSI
+extern
+const gss_OID_desc * const gss_mech_globus_gssapi_openssl;
+#define is_gsi_oid(oid) \
+ (oid->length == gss_mech_globus_gssapi_openssl->length && \
+ (memcmp(oid->elements, gss_mech_globus_gssapi_openssl->elements, \
+ oid->length) == 0))
+#endif
+
+int
+userauth_external(Authctxt *authctxt)
+{
- if (attempt++ >= 1)
- return 0;
++ static int attempt = 0;
+
- debug2("userauth_external");
- packet_start(SSH2_MSG_USERAUTH_REQUEST);
++ if (attempt++ >= 1)
++ return 0;
+
+ /* The client MUST NOT try this method if initial key exchange
+ was not performed using a GSSAPI-based key exchange
+ method. */
+ if (gss_kex_context == NULL) {
+ debug2("gsskex not performed, skipping external-keyx");
+ return 0;
+ }
+
- if (options.implicit && is_gsi_oid(gss_kex_context->oid)) {
- packet_put_cstring("");
++ debug2("userauth_external");
++ packet_start(SSH2_MSG_USERAUTH_REQUEST);
+#ifdef GSI
- packet_put_cstring(authctxt->server_user);
++ if (options.implicit && is_gsi_oid(gss_kex_context->oid)) {
++ packet_put_cstring("");
+ } else {
+#endif
- packet_put_cstring(authctxt->service);
- packet_put_cstring(authctxt->method->name);
- packet_send();
- packet_write_wait();
- return 1;
++ packet_put_cstring(authctxt->server_user);
+#ifdef GSI
+ }
+#endif
++ packet_put_cstring(authctxt->service);
++ packet_put_cstring(authctxt->method->name);
++ packet_send();
++ packet_write_wait();
++ return 1;
+}
int
userauth_gsskeyex(Authctxt *authctxt)
{
return (0);
}
- ssh_gssapi_buildmic(&b, authctxt->server_user, authctxt->service,
- "gssapi-keyex");
+#ifdef GSI
- if (options.implicit && is_gsi_oid(gss_kex_context->oid)) {
- ssh_gssapi_buildmic(&b, "", authctxt->service, "gssapi-keyex");
++ if (options.implicit && is_gsi_oid(gss_kex_context->oid)) {
++ ssh_gssapi_buildmic(&b, "", authctxt->service, "gssapi-keyex");
+ } else {
+#endif
- ssh_gssapi_buildmic(&b, authctxt->server_user, authctxt->service,
- "gssapi-keyex");
++ ssh_gssapi_buildmic(&b, authctxt->server_user, authctxt->service,
++ "gssapi-keyex");
+#ifdef GSI
+ }
+#endif
gssbuf.value = buffer_ptr(&b);
gssbuf.length = buffer_len(&b);
}
packet_start(SSH2_MSG_USERAUTH_REQUEST);
- if (options.implicit && is_gsi_oid(gss_kex_context->oid)) {
- packet_put_cstring("");
+#ifdef GSI
++ if (options.implicit && is_gsi_oid(gss_kex_context->oid)) {
++ packet_put_cstring("");
+ } else {
+#endif
packet_put_cstring(authctxt->server_user);
+#ifdef GSI
+ }
+#endif
packet_put_cstring(authctxt->service);
packet_put_cstring(authctxt->method->name);
packet_put_string(mic.value, mic.length);
cleanup_exit(255);
}
+ /* set the HPN options for the child */
+ channel_set_hpn(options.hpn_disabled, options.hpn_buffer_size);
+
/*
* We use get_canonical_hostname with usedns = 0 instead of
* get_remote_ipaddr here so IP options will be checked.
}
#endif
- /* set the HPN options for the child */
- channel_set_hpn(options.hpn_disabled, options.hpn_buffer_size);
-
/*
* We don't want to listen forever unless the other side
* successfully authenticates itself. So we set up an alarm which is
alarm(options.login_grace_time);
sshd_exchange_identification(sock_in, sock_out);
+#if defined(AFS_KRB5)
+ /* If machine has AFS, set process authentication group. */
+ if (k_hasafs()) {
+ k_setpag();
+ k_unlog();
+ }
+#endif /* AFS || AFS_KRB5 */
/* In inetd mode, generate ephemeral key only for proto 1 connections */
if (!compat20 && inetd_flag && sensitive_data.server_key == NULL)
#endif
#ifdef GSSAPI
- if (options.gss_authentication) {
+ if (options.gss_authentication && options.gss_deleg_creds) {
temporarily_use_uid(authctxt->pw);
ssh_gssapi_storecreds();
restore_uid();
}
#endif
- /* start key exchange */
/* start key exchange */
kex = kex_setup(myproposal);
kex->kex[KEX_DH_GRP1_SHA1] = kexdh_server;
kex->kex[KEX_DH_GEX_SHA1] = kexgex_server;
kex->kex[KEX_DH_GEX_SHA256] = kexgex_server;
#ifdef GSSAPI
- kex->kex[KEX_GSS_GRP1_SHA1] = kexgss_server;
- kex->kex[KEX_GSS_GRP14_SHA1] = kexgss_server;
- kex->kex[KEX_GSS_GEX_SHA1] = kexgss_server;
+ if (options.gss_keyex) {
+ kex->kex[KEX_GSS_GRP1_SHA1] = kexgss_server;
+ kex->kex[KEX_GSS_GRP14_SHA1] = kexgss_server;
+ kex->kex[KEX_GSS_GEX_SHA1] = kexgss_server;
+ }
#endif
kex->server = 1;
kex->client_version_string=client_version_string;
.It Cm GSSAPIAuthentication
Specifies whether user authentication based on GSSAPI is allowed.
The default is
-.Dq no .
+.Dq yes .
Note that this option applies to protocol version 2 only.
+.It Cm GSSAPIDelegateCredentials
+Specifies whether delegated credentials are stored in the user's environment.
+The default is
+.Dq yes .
.It Cm GSSAPIKeyExchange
-Specifies whether key exchange based on GSSAPI is allowed. GSSAPI key exchange
+Specifies whether key exchange based on GSSAPI is allowed. GSSAPI key exchange
doesn't rely on ssh keys to verify host identity.
The default is
-.Dq no .
+.Dq yes .
Note that this option applies to protocol version 2 only.
.It Cm GSSAPICleanupCredentials
Specifies whether to automatically destroy the user's credentials cache
The default is
.Dq yes .
Note that this option applies to protocol version 2 only.
++.It Cm GSSAPICredentialsPath
++If specified, the delegated GSSAPI credential is stored in the
++given path, overwriting any existing credentials.
++Paths can be specified with syntax similar to the AuthorizedKeysFile
++option (i.e., accepting %h and %u tokens).
++When using this option,
++setting 'GssapiCleanupCredentials no' is recommended,
++so logging out of one session
++doesn't remove the credentials in use by another session of
++the same user.
++Currently only implemented for the GSI mechanism.
++.It Cm GSIAllowLimitedProxy
++Specifies whether to accept limited proxy credentials for
++authentication.
++The default is
++.Dq no .
.It Cm GSSAPIStrictAcceptorCheck
Determines whether to be strict about the identity of the GSSAPI acceptor
a client authenticates against. If
and setting it to
.Dq no
may only work with recent Kerberos GSSAPI libraries.
- .It Cm GSSAPICredentialsPath
- If specified, the delegated GSSAPI credential is stored in the
- given path, overwriting any existing credentials.
- Paths can be specified with syntax similar to the AuthorizedKeysFile
- option (i.e., accepting %h and %u tokens).
- When using this option,
- setting 'GssapiCleanupCredentials no' is recommended,
- so logging out of one session
- doesn't remove the credentials in use by another session of
- the same user.
- Currently only implemented for the GSI mechanism.
- .It Cm GSIAllowLimitedProxy
- Specifies whether to accept limited proxy credentials for
- authentication.
- The default is
+ .It Cm GSSAPIStoreCredentialsOnRekey
+ Controls whether the user's GSSAPI credentials should be updated following a
+ successful connection rekeying. This option can be used to accepted renewed
+ or updated credentials from a compatible client. The default is
.Dq no .
.It Cm HostbasedAuthentication
Specifies whether rhosts or /etc/hosts.equiv authentication together
as a non-root user.
The default is
.Dq no .
+.It Cm PermitPAMUserChange
+If set to
+.Dq yes
+this will enable PAM authentication to change the name of the user being
+authenticated. The default is
+.Dq no .
.It Cm UsePrivilegeSeparation
Specifies whether
.Xr sshd 8
/* $OpenBSD: version.h,v 1.55 2009/02/23 00:06:15 djm Exp $ */
+#ifdef GSI
+#define GSI_VERSION " GSI"
+#else
+#define GSI_VERSION ""
+#endif
+
+#ifdef KRB5
+#define KRB5_VERSION " KRB5"
+#else
+#define KRB5_VERSION ""
+#endif
+
+#ifdef MECHGLUE
+#define MGLUE_VERSION " MECHGLUE"
+#else
+#define MGLUE_VERSION ""
+#endif
+
+#define NCSA_VERSION " GLOBUS_GSSAPI_20090506"
+
#define SSH_VERSION "OpenSSH_5.2"
#define SSH_PORTABLE "p1"
- #define SSH_HPN "-hpn13v5"
+ #define SSH_HPN "-hpn13v6"
-#define SSH_RELEASE SSH_VERSION SSH_PORTABLE SSH_HPN
+#define SSH_RELEASE SSH_VERSION SSH_PORTABLE SSH_HPN \
+ NCSA_VERSION GSI_VERSION KRB5_VERSION MGLUE_VERSION
andersk / gssapi-openssh.git / commitdiff
