* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
+/*
+ * Copyright (c) 2003,2004 Damien Miller <djm@mindrot.org>
+ * Copyright (c) 2003,2004 Darren Tucker <dtucker@zip.com.au>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
/* Based on $FreeBSD: src/crypto/openssh/auth2-pam-freebsd.c,v 1.11 2003/03/31 13:48:18 des Exp $ */
#include "includes.h"
RCSID("$Id$");
#ifdef USE_PAM
+#if defined(HAVE_SECURITY_PAM_APPL_H)
#include <security/pam_appl.h>
+#elif defined (HAVE_PAM_PAM_APPL_H)
+#include <pam/pam_appl.h>
+#endif
#include "auth.h"
#include "auth-pam.h"
#include "monitor_wrap.h"
#include "msg.h"
#include "packet.h"
-#include "readpass.h"
+#include "misc.h"
#include "servconf.h"
#include "ssh2.h"
#include "xmalloc.h"
extern ServerOptions options;
extern Buffer loginmsg;
-
-#define __unused
+extern int compat20;
+extern u_int utmp_len;
#ifdef USE_POSIX_THREADS
#include <pthread.h>
/*
- * Avoid namespace clash when *not* using pthreads for systems *with*
- * pthreads, which unconditionally define pthread_t via sys/types.h
+ * Avoid namespace clash when *not* using pthreads for systems *with*
+ * pthreads, which unconditionally define pthread_t via sys/types.h
* (e.g. Linux)
*/
-typedef pthread_t sp_pthread_t;
+typedef pthread_t sp_pthread_t;
#else
+typedef pid_t sp_pthread_t;
+#endif
+
+struct pam_ctxt {
+ sp_pthread_t pam_thread;
+ int pam_psock;
+ int pam_csock;
+ int pam_done;
+};
+
+static void sshpam_free_ctx(void *);
+static struct pam_ctxt *cleanup_ctxt;
+
+#ifndef USE_POSIX_THREADS
/*
* Simulate threads with processes.
*/
-typedef pid_t sp_pthread_t;
+
+static int sshpam_thread_status = -1;
+static mysig_t sshpam_oldsig;
+
+static void
+sshpam_sigchld_handler(int sig)
+{
+ signal(SIGCHLD, SIG_DFL);
+ if (cleanup_ctxt == NULL)
+ return; /* handler called after PAM cleanup, shouldn't happen */
+ if (waitpid(cleanup_ctxt->pam_thread, &sshpam_thread_status, WNOHANG)
+ == -1) {
+ /* PAM thread has not exitted, privsep slave must have */
+ kill(cleanup_ctxt->pam_thread, SIGTERM);
+ if (waitpid(cleanup_ctxt->pam_thread, &sshpam_thread_status, 0)
+ == -1)
+ return; /* could not wait */
+ }
+ if (WIFSIGNALED(sshpam_thread_status) &&
+ WTERMSIG(sshpam_thread_status) == SIGTERM)
+ return; /* terminated by pthread_cancel */
+ if (!WIFEXITED(sshpam_thread_status))
+ fatal("PAM: authentication thread exited unexpectedly");
+ if (WEXITSTATUS(sshpam_thread_status) != 0)
+ fatal("PAM: authentication thread exited uncleanly");
+}
static void
pthread_exit(void *value __unused)
{
pid_t pid;
+ sshpam_thread_status = -1;
switch ((pid = fork())) {
case -1:
error("fork(): %s", strerror(errno));
_exit(1);
default:
*thread = pid;
+ sshpam_oldsig = signal(SIGCHLD, sshpam_sigchld_handler);
return (0);
}
}
static int
pthread_cancel(sp_pthread_t thread)
{
+ signal(SIGCHLD, sshpam_oldsig);
return (kill(thread, SIGTERM));
}
{
int status;
+ if (sshpam_thread_status != -1)
+ return (sshpam_thread_status);
+ signal(SIGCHLD, sshpam_oldsig);
waitpid(thread, &status, 0);
return (status);
}
static pam_handle_t *sshpam_handle = NULL;
static int sshpam_err = 0;
static int sshpam_authenticated = 0;
-static int sshpam_new_authtok_reqd = 0;
static int sshpam_session_open = 0;
static int sshpam_cred_established = 0;
+static int sshpam_account_status = -1;
static char **sshpam_env = NULL;
-
-struct pam_ctxt {
- sp_pthread_t pam_thread;
- int pam_psock;
- int pam_csock;
- int pam_done;
-};
-
-static void sshpam_free_ctx(void *);
-static struct pam_ctxt *cleanup_ctxt;
+static Authctxt *sshpam_authctxt = NULL;
+static const char *sshpam_password = NULL;
/* Some PAM implementations don't implement this */
#ifndef HAVE_PAM_GETENVLIST
pam_getenvlist(pam_handle_t *pamh)
{
/*
- * XXX - If necessary, we can still support envrionment passing
+ * XXX - If necessary, we can still support envrionment passing
* for platforms without pam_getenvlist by searching for known
* env vars (e.g. KRB5CCNAME) from the PAM environment.
*/
}
#endif
+void
+sshpam_password_change_required(int reqd)
+{
+ debug3("%s %d", __func__, reqd);
+ if (sshpam_authctxt == NULL)
+ fatal("%s: PAM authctxt not initialized", __func__);
+ sshpam_authctxt->force_pwchange = reqd;
+ if (reqd) {
+ no_port_forwarding_flag |= 2;
+ no_agent_forwarding_flag |= 2;
+ no_x11_forwarding_flag |= 2;
+ } else {
+ no_port_forwarding_flag &= ~2;
+ no_agent_forwarding_flag &= ~2;
+ no_x11_forwarding_flag &= ~2;
+ }
+}
+
/* Import regular and PAM environment from subprocess */
static void
import_environments(Buffer *b)
u_int i, num_env;
int err;
+ debug3("PAM: %s entering", __func__);
+
+#ifndef USE_POSIX_THREADS
+ /* Import variables set by do_pam_account */
+ sshpam_account_status = buffer_get_int(b);
+ sshpam_password_change_required(buffer_get_int(b));
+
/* Import environment from subprocess */
num_env = buffer_get_int(b);
sshpam_env = xmalloc((num_env + 1) * sizeof(*sshpam_env));
}
#endif
}
+#endif
}
/*
* Conversation function for authentication thread.
*/
static int
-sshpam_thread_conv(int n, const struct pam_message **msg,
+sshpam_thread_conv(int n, struct pam_message **msg,
struct pam_response **resp, void *data)
{
Buffer buffer;
struct pam_response *reply;
int i;
+ debug3("PAM: %s entering, %d messages", __func__, n);
*resp = NULL;
+ if (data == NULL) {
+ error("PAM: conversation function passed a null context");
+ return (PAM_CONV_ERR);
+ }
ctxt = data;
if (n <= 0 || n > PAM_MAX_NUM_MSG)
return (PAM_CONV_ERR);
for (i = 0; i < n; ++i) {
switch (PAM_MSG_MEMBER(msg, i, msg_style)) {
case PAM_PROMPT_ECHO_OFF:
- buffer_put_cstring(&buffer,
+ buffer_put_cstring(&buffer,
PAM_MSG_MEMBER(msg, i, msg));
- if (ssh_msg_send(ctxt->pam_csock,
+ if (ssh_msg_send(ctxt->pam_csock,
PAM_MSG_MEMBER(msg, i, msg_style), &buffer) == -1)
goto fail;
- if (ssh_msg_recv(ctxt->pam_csock, &buffer) == -1)
+ if (ssh_msg_recv(ctxt->pam_csock, &buffer) == -1)
goto fail;
if (buffer_get_char(&buffer) != PAM_AUTHTOK)
goto fail;
reply[i].resp = buffer_get_string(&buffer, NULL);
break;
case PAM_PROMPT_ECHO_ON:
- buffer_put_cstring(&buffer,
+ buffer_put_cstring(&buffer,
PAM_MSG_MEMBER(msg, i, msg));
- if (ssh_msg_send(ctxt->pam_csock,
+ if (ssh_msg_send(ctxt->pam_csock,
PAM_MSG_MEMBER(msg, i, msg_style), &buffer) == -1)
goto fail;
if (ssh_msg_recv(ctxt->pam_csock, &buffer) == -1)
reply[i].resp = buffer_get_string(&buffer, NULL);
break;
case PAM_ERROR_MSG:
- buffer_put_cstring(&buffer,
+ buffer_put_cstring(&buffer,
PAM_MSG_MEMBER(msg, i, msg));
- if (ssh_msg_send(ctxt->pam_csock,
+ if (ssh_msg_send(ctxt->pam_csock,
PAM_MSG_MEMBER(msg, i, msg_style), &buffer) == -1)
goto fail;
break;
case PAM_TEXT_INFO:
- buffer_put_cstring(&buffer,
+ buffer_put_cstring(&buffer,
PAM_MSG_MEMBER(msg, i, msg));
- if (ssh_msg_send(ctxt->pam_csock,
+ if (ssh_msg_send(ctxt->pam_csock,
PAM_MSG_MEMBER(msg, i, msg_style), &buffer) == -1)
goto fail;
break;
struct pam_ctxt *ctxt = ctxtp;
Buffer buffer;
struct pam_conv sshpam_conv;
+ int flags = (options.permit_empty_passwd == 0 ?
+ PAM_DISALLOW_NULL_AUTHTOK : 0);
#ifndef USE_POSIX_THREADS
extern char **environ;
char **env_from_pam;
u_int i;
const char *pam_user;
- pam_get_item(sshpam_handle, PAM_USER, (const void **)&pam_user);
+ pam_get_item(sshpam_handle, PAM_USER, (void **)&pam_user);
setproctitle("%s [pam]", pam_user);
environ[0] = NULL;
#endif
sshpam_conv.conv = sshpam_thread_conv;
sshpam_conv.appdata_ptr = ctxt;
+ if (sshpam_authctxt == NULL)
+ fatal("%s: PAM authctxt not initialized", __func__);
+
buffer_init(&buffer);
sshpam_err = pam_set_item(sshpam_handle, PAM_CONV,
(const void *)&sshpam_conv);
if (sshpam_err != PAM_SUCCESS)
goto auth_fail;
- sshpam_err = pam_authenticate(sshpam_handle, 0);
+ sshpam_err = pam_authenticate(sshpam_handle, flags);
if (sshpam_err != PAM_SUCCESS)
goto auth_fail;
+
+ if (compat20) {
+ if (!do_pam_account())
+ goto auth_fail;
+ if (sshpam_authctxt->force_pwchange) {
+ sshpam_err = pam_chauthtok(sshpam_handle,
+ PAM_CHANGE_EXPIRED_AUTHTOK);
+ if (sshpam_err != PAM_SUCCESS)
+ goto auth_fail;
+ sshpam_password_change_required(0);
+ }
+ }
+
buffer_put_cstring(&buffer, "OK");
#ifndef USE_POSIX_THREADS
+ /* Export variables set by do_pam_account */
+ buffer_put_int(&buffer, sshpam_account_status);
+ buffer_put_int(&buffer, sshpam_authctxt->force_pwchange);
+
/* Export any environment strings set in child */
for(i = 0; environ[i] != NULL; i++)
; /* Count */
ssh_msg_send(ctxt->pam_csock, PAM_AUTH_ERR, &buffer);
buffer_free(&buffer);
pthread_exit(NULL);
-
+
return (NULL); /* Avoid warning for non-pthread case */
}
{
struct pam_ctxt *ctxt = cleanup_ctxt;
+ debug3("PAM: %s entering", __func__);
if (ctxt != NULL && ctxt->pam_thread != 0) {
pthread_cancel(ctxt->pam_thread);
pthread_join(ctxt->pam_thread, NULL);
}
static int
-sshpam_null_conv(int n, const struct pam_message **msg,
+sshpam_null_conv(int n, struct pam_message **msg,
struct pam_response **resp, void *data)
{
+ debug3("PAM: %s entering, %d messages", __func__, n);
return (PAM_CONV_ERR);
}
pam_close_session(sshpam_handle, PAM_SILENT);
sshpam_session_open = 0;
}
- sshpam_authenticated = sshpam_new_authtok_reqd = 0;
+ sshpam_authenticated = 0;
pam_end(sshpam_handle, sshpam_err);
sshpam_handle = NULL;
}
static int
-sshpam_init(const char *user)
+sshpam_init(Authctxt *authctxt)
{
- extern u_int utmp_len;
extern char *__progname;
- const char *pam_rhost, *pam_user;
+ const char *pam_rhost, *pam_user, *user = authctxt->user;
if (sshpam_handle != NULL) {
/* We already have a PAM context; check if the user matches */
sshpam_err = pam_get_item(sshpam_handle,
- PAM_USER, (const void **)&pam_user);
+ PAM_USER, (void **)&pam_user);
if (sshpam_err == PAM_SUCCESS && strcmp(user, pam_user) == 0)
return (0);
pam_end(sshpam_handle, sshpam_err);
debug("PAM: initializing for \"%s\"", user);
sshpam_err =
pam_start(SSHD_PAM_SERVICE, user, &null_conv, &sshpam_handle);
+ sshpam_authctxt = authctxt;
+
if (sshpam_err != PAM_SUCCESS) {
pam_end(sshpam_handle, sshpam_err);
sshpam_handle = NULL;
return (-1);
}
#ifdef PAM_TTY_KLUDGE
- /*
- * Some silly PAM modules (e.g. pam_time) require a TTY to operate.
- * sshd doesn't set the tty until too late in the auth process and
+ /*
+ * Some silly PAM modules (e.g. pam_time) require a TTY to operate.
+ * sshd doesn't set the tty until too late in the auth process and
* may not even set one (for tty-less connections)
- */
+ */
debug("PAM: setting PAM_TTY to \"ssh\"");
sshpam_err = pam_set_item(sshpam_handle, PAM_TTY, "ssh");
if (sshpam_err != PAM_SUCCESS) {
struct pam_ctxt *ctxt;
int socks[2];
+ debug3("PAM: %s entering", __func__);
/* Refuse to start if we don't have PAM enabled */
if (!options.use_pam)
return NULL;
/* Initialize PAM */
- if (sshpam_init(authctxt->user) == -1) {
+ if (sshpam_init(authctxt) == -1) {
error("PAM: initialization failed");
return (NULL);
}
char *msg;
size_t len;
+ debug3("PAM: %s entering", __func__);
buffer_init(&buffer);
*name = xstrdup("");
*info = xstrdup("");
xfree(msg);
return (0);
}
- error("PAM: %s", msg);
+ error("PAM: %s for %s%.100s from %.100s", msg,
+ sshpam_authctxt->valid ? "" : "illegal user ",
+ sshpam_authctxt->user,
+ get_remote_name_or_ip(utmp_len, options.use_dns));
/* FALLTHROUGH */
default:
*num = 0;
Buffer buffer;
struct pam_ctxt *ctxt = ctx;
- debug2("PAM: %s", __func__);
+ debug2("PAM: %s entering, %d responses", __func__, num);
switch (ctxt->pam_done) {
case 1:
sshpam_authenticated = 1;
{
struct pam_ctxt *ctxt = ctxtp;
+ debug3("PAM: %s entering", __func__);
sshpam_thread_cleanup();
xfree(ctxt);
/*
* This replaces auth-pam.c
*/
void
-start_pam(const char *user)
+start_pam(Authctxt *authctxt)
{
if (!options.use_pam)
fatal("PAM: initialisation requested when UsePAM=no");
- if (sshpam_init(user) == -1)
+ if (sshpam_init(authctxt) == -1)
fatal("PAM: initialisation failed");
}
u_int
do_pam_account(void)
{
+ if (sshpam_account_status != -1)
+ return (sshpam_account_status);
+
sshpam_err = pam_acct_mgmt(sshpam_handle, 0);
- debug3("%s: pam_acct_mgmt = %d", __func__, sshpam_err);
+ debug3("PAM: %s pam_acct_mgmt = %d", __func__, sshpam_err);
- if (sshpam_err != PAM_SUCCESS && sshpam_err != PAM_NEW_AUTHTOK_REQD)
- return (0);
-
- if (sshpam_err == PAM_NEW_AUTHTOK_REQD) {
- sshpam_new_authtok_reqd = 1;
-
- /* Prevent forwardings until password changed */
- no_port_forwarding_flag |= 2;
- no_agent_forwarding_flag |= 2;
- no_x11_forwarding_flag |= 2;
+ if (sshpam_err != PAM_SUCCESS && sshpam_err != PAM_NEW_AUTHTOK_REQD) {
+ sshpam_account_status = 0;
+ return (sshpam_account_status);
}
- return (1);
+ if (sshpam_err == PAM_NEW_AUTHTOK_REQD)
+ sshpam_password_change_required(1);
+
+ sshpam_account_status = 1;
+ return (sshpam_account_status);
}
void
pam_strerror(sshpam_handle, sshpam_err));
}
-int
-is_pam_password_change_required(void)
-{
- return (sshpam_new_authtok_reqd);
-}
-
static int
-pam_tty_conv(int n, const struct pam_message **msg,
+sshpam_tty_conv(int n, struct pam_message **msg,
struct pam_response **resp, void *data)
{
char input[PAM_MAX_MSG_SIZE];
struct pam_response *reply;
int i;
+ debug3("PAM: %s called with %d messages", __func__, n);
+
*resp = NULL;
if (n <= 0 || n > PAM_MAX_NUM_MSG || !isatty(STDIN_FILENO))
switch (PAM_MSG_MEMBER(msg, i, msg_style)) {
case PAM_PROMPT_ECHO_OFF:
reply[i].resp =
- read_passphrase(PAM_MSG_MEMBER(msg, i, msg),
+ read_passphrase(PAM_MSG_MEMBER(msg, i, msg),
RP_ALLOW_STDIN);
reply[i].resp_retcode = PAM_SUCCESS;
break;
return (PAM_CONV_ERR);
}
-static struct pam_conv tty_conv = { pam_tty_conv, NULL };
+static struct pam_conv tty_conv = { sshpam_tty_conv, NULL };
/*
* XXX this should be done in the authentication phase, but ssh1 doesn't
pam_strerror(sshpam_handle, sshpam_err));
}
+static int
+sshpam_store_conv(int n, struct pam_message **msg,
+ struct pam_response **resp, void *data)
+{
+ struct pam_response *reply;
+ int i;
+ size_t len;
+
+ debug3("PAM: %s called with %d messages", __func__, n);
+ *resp = NULL;
+
+ if (n <= 0 || n > PAM_MAX_NUM_MSG)
+ return (PAM_CONV_ERR);
+
+ if ((reply = malloc(n * sizeof(*reply))) == NULL)
+ return (PAM_CONV_ERR);
+ memset(reply, 0, n * sizeof(*reply));
+
+ for (i = 0; i < n; ++i) {
+ switch (PAM_MSG_MEMBER(msg, i, msg_style)) {
+ case PAM_ERROR_MSG:
+ case PAM_TEXT_INFO:
+ len = strlen(PAM_MSG_MEMBER(msg, i, msg));
+ buffer_append(&loginmsg, PAM_MSG_MEMBER(msg, i, msg), len);
+ buffer_append(&loginmsg, "\n", 1 );
+ reply[i].resp_retcode = PAM_SUCCESS;
+ break;
+ default:
+ goto fail;
+ }
+ }
+ *resp = reply;
+ return (PAM_SUCCESS);
+
+ fail:
+ for(i = 0; i < n; i++) {
+ if (reply[i].resp != NULL)
+ xfree(reply[i].resp);
+ }
+ xfree(reply);
+ return (PAM_CONV_ERR);
+}
+
+static struct pam_conv store_conv = { sshpam_store_conv, NULL };
+
void
do_pam_session(void)
{
- sshpam_err = pam_set_item(sshpam_handle, PAM_CONV,
- (const void *)&tty_conv);
+ debug3("PAM: opening session");
+ sshpam_err = pam_set_item(sshpam_handle, PAM_CONV,
+ (const void *)&store_conv);
if (sshpam_err != PAM_SUCCESS)
fatal("PAM: failed to set PAM_CONV: %s",
pam_strerror(sshpam_handle, sshpam_err));
sshpam_session_open = 1;
}
-/*
+/*
* Set a PAM environment string. We need to do this so that the session
* modules can handle things like Kerberos/GSI credentials that appear
* during the ssh authentication process.
*/
int
-do_pam_putenv(char *name, char *value)
+do_pam_putenv(char *name, char *value)
{
int ret = 1;
-#ifdef HAVE_PAM_PUTENV
+#ifdef HAVE_PAM_PUTENV
char *compound;
size_t len;
return (ret);
}
-void
-print_pam_messages(void)
-{
- /* XXX */
-}
-
char **
fetch_pam_child_environment(void)
{
xfree(env);
}
+/*
+ * "Blind" conversation function for password authentication. Assumes that
+ * echo-off prompts are for the password and stores messages for later
+ * display.
+ */
+static int
+sshpam_passwd_conv(int n, struct pam_message **msg,
+ struct pam_response **resp, void *data)
+{
+ struct pam_response *reply;
+ int i;
+ size_t len;
+
+ debug3("PAM: %s called with %d messages", __func__, n);
+
+ *resp = NULL;
+
+ if (n <= 0 || n > PAM_MAX_NUM_MSG)
+ return (PAM_CONV_ERR);
+
+ if ((reply = malloc(n * sizeof(*reply))) == NULL)
+ return (PAM_CONV_ERR);
+ memset(reply, 0, n * sizeof(*reply));
+
+ for (i = 0; i < n; ++i) {
+ switch (PAM_MSG_MEMBER(msg, i, msg_style)) {
+ case PAM_PROMPT_ECHO_OFF:
+ if (sshpam_password == NULL)
+ goto fail;
+ reply[i].resp = xstrdup(sshpam_password);
+ reply[i].resp_retcode = PAM_SUCCESS;
+ break;
+ case PAM_ERROR_MSG:
+ case PAM_TEXT_INFO:
+ len = strlen(PAM_MSG_MEMBER(msg, i, msg));
+ if (len > 0) {
+ buffer_append(&loginmsg,
+ PAM_MSG_MEMBER(msg, i, msg), len);
+ buffer_append(&loginmsg, "\n", 1);
+ }
+ reply[i].resp = xstrdup("");
+ reply[i].resp_retcode = PAM_SUCCESS;
+ break;
+ default:
+ goto fail;
+ }
+ }
+ *resp = reply;
+ return (PAM_SUCCESS);
+
+ fail:
+ for(i = 0; i < n; i++) {
+ if (reply[i].resp != NULL)
+ xfree(reply[i].resp);
+ }
+ xfree(reply);
+ return (PAM_CONV_ERR);
+}
+
+static struct pam_conv passwd_conv = { sshpam_passwd_conv, NULL };
+
+/*
+ * Attempt password authentication via PAM
+ */
+int
+sshpam_auth_passwd(Authctxt *authctxt, const char *password)
+{
+ int flags = (options.permit_empty_passwd == 0 ?
+ PAM_DISALLOW_NULL_AUTHTOK : 0);
+ static char badpw[] = "\b\n\r\177INCORRECT";
+
+ if (!options.use_pam || sshpam_handle == NULL)
+ fatal("PAM: %s called when PAM disabled or failed to "
+ "initialise.", __func__);
+
+ sshpam_password = password;
+ sshpam_authctxt = authctxt;
+
+ /*
+ * If the user logging in is invalid, or is root but is not permitted
+ * by PermitRootLogin, use an invalid password to prevent leaking
+ * information via timing (eg if the PAM config has a delay on fail).
+ */
+ if (!authctxt->valid || (authctxt->pw->pw_uid == 0 &&
+ options.permit_root_login != PERMIT_YES))
+ sshpam_password = badpw;
+
+ sshpam_err = pam_set_item(sshpam_handle, PAM_CONV,
+ (const void *)&passwd_conv);
+ if (sshpam_err != PAM_SUCCESS)
+ fatal("PAM: %s: failed to set PAM_CONV: %s", __func__,
+ pam_strerror(sshpam_handle, sshpam_err));
+
+ sshpam_err = pam_authenticate(sshpam_handle, flags);
+ sshpam_password = NULL;
+ if (sshpam_err == PAM_SUCCESS && authctxt->valid) {
+ debug("PAM: password authentication accepted for %.100s",
+ authctxt->user);
+ return 1;
+ } else {
+ debug("PAM: password authentication failed for %.100s: %s",
+ authctxt->valid ? authctxt->user : "an illegal user",
+ pam_strerror(sshpam_handle, sshpam_err));
+ return 0;
+ }
+}
#endif /* USE_PAM */
andersk / openssh.git / blobdiff