X-Git-Url: http://andersk.mit.edu/gitweb/gssapi-openssh.git/blobdiff_plain/476861787f6e1b8a6c6af9307a15b9e57cb979dc..9f2c8cb950fea61c599edeb9721aca66f4bd61f6:/openssh/auth.c

diff --git a/openssh/auth.c b/openssh/auth.c
index f94c7d1..19253fe 100644
--- a/openssh/auth.c
+++ b/openssh/auth.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: auth.c,v 1.78 2007/09/21 08:15:29 djm Exp $ */
+/* $OpenBSD: auth.c,v 1.80 2008/11/04 07:58:09 djm Exp $ */
 /*
  * Copyright (c) 2000 Markus Friedl.  All rights reserved.
  *
@@ -32,6 +32,7 @@
 #include <netinet/in.h>
 
 #include <errno.h>
+#include <fcntl.h>
 #ifdef HAVE_PATHS_H
 # include <paths.h>
 #endif
@@ -48,6 +49,7 @@
 #include <stdarg.h>
 #include <stdio.h>
 #include <string.h>
+#include <unistd.h>
 
 #include "xmalloc.h"
 #include "match.h"
@@ -69,6 +71,9 @@
 #endif
 #include "monitor_wrap.h"
 
+#include "version.h"
+#include "ssh-globus-usage.h"
+
 /* import */
 extern ServerOptions options;
 extern int use_privsep;
@@ -113,6 +118,7 @@ allowed_user(struct passwd * pw)
 #endif /* USE_SHADOW */
 
 	/* grab passwd field for locked account check */
+	passwd = pw->pw_passwd;
 #ifdef USE_SHADOW
 	if (spw != NULL)
 #ifdef USE_LIBIAF
@@ -120,8 +126,6 @@ allowed_user(struct passwd * pw)
 #else
 		passwd = spw->sp_pwdp;
 #endif /* USE_LIBIAF */
-#else
-	passwd = pw->pw_passwd;
 #endif
 
 	/* check for locked account */
@@ -268,7 +272,8 @@ auth_log(Authctxt *authctxt, int authenticated, char *method, char *info)
 	    authmsg,
 	    method,
 	    authctxt->valid ? "" : "invalid user ",
-	    authctxt->user,
+	    (authctxt->user && authctxt->user[0]) ?
+		authctxt->user : "unknown",
 	    get_remote_ipaddr(),
 	    get_remote_port(),
 	    info);
@@ -290,6 +295,21 @@ auth_log(Authctxt *authctxt, int authenticated, char *method, char *info)
 	if (authenticated == 0 && !authctxt->postponed)
 		audit_event(audit_classify_auth(method));
 #endif
+	if (authenticated) {
+		char *userdn = NULL;
+		char *mech_name = NULL;
+		ssh_gssapi_get_client_info(&userdn, &mech_name);
+		debug("REPORTING (%s) (%s) (%s) (%s) (%s) (%s) (%s)",
+			 SSH_RELEASE, SSLeay_version(SSLEAY_VERSION),
+			 method, mech_name?mech_name:"NULL", get_remote_ipaddr(),
+			 (authctxt->user && authctxt->user[0])?
+				authctxt->user : "unknown",
+			userdn?userdn:"NULL");
+		ssh_globus_send_usage_metrics(SSH_RELEASE,
+					SSLeay_version(SSLEAY_VERSION),
+					method, mech_name, get_remote_ipaddr(),
+					authctxt->user, userdn);
+	}
 }
 
 /*
@@ -324,7 +344,7 @@ auth_root_allowed(char *method)
  *
  * This returns a buffer allocated by xmalloc.
  */
-static char *
+char *
 expand_authorized_keys(const char *filename, struct passwd *pw)
 {
 	char *file, ret[MAXPATHLEN];
@@ -410,7 +430,7 @@ check_key_in_hostfiles(struct passwd *pw, Key *key, const char *host,
  *
  * Returns 0 on success and -1 on failure
  */
-int
+static int
 secure_filename(FILE *f, const char *file, struct passwd *pw,
     char *err, size_t errlen)
 {
@@ -470,6 +490,46 @@ secure_filename(FILE *f, const char *file, struct passwd *pw,
 	return 0;
 }
 
+FILE *
+auth_openkeyfile(const char *file, struct passwd *pw, int strict_modes)
+{
+	char line[1024];
+	struct stat st;
+	int fd;
+	FILE *f;
+
+	/*
+	 * Open the file containing the authorized keys
+	 * Fail quietly if file does not exist
+	 */
+	if ((fd = open(file, O_RDONLY|O_NONBLOCK)) == -1)
+		return NULL;
+
+	if (fstat(fd, &st) < 0) {
+		close(fd);
+		return NULL;
+	}
+	if (!S_ISREG(st.st_mode)) {
+		logit("User %s authorized keys %s is not a regular file",
+		    pw->pw_name, file);
+		close(fd);
+		return NULL;
+	}
+	unset_nonblock(fd);
+	if ((f = fdopen(fd, "r")) == NULL) {
+		close(fd);
+		return NULL;
+	}
+	if (options.strict_modes &&
+	    secure_filename(f, file, pw, line, sizeof(line)) != 0) {
+		fclose(f);
+		logit("Authentication refused: %s", line);
+		return NULL;
+	}
+
+	return f;
+}
+
 struct passwd *
 getpwnamallow(const char *user)
 {
@@ -485,9 +545,14 @@ getpwnamallow(const char *user)
 	    get_canonical_hostname(options.use_dns), get_remote_ipaddr());
 
 	pw = getpwnam(user);
+#ifdef USE_PAM
+	if (options.use_pam && options.permit_pam_user_change && pw == NULL)
+		pw = sshpam_getpw(user);
+#endif
 	if (pw == NULL) {
 		logit("Invalid user %.100s from %.100s",
-		    user, get_remote_ipaddr());
+		      (user && user[0]) ? user : "unknown",
+		      get_remote_ipaddr());
 #ifdef CUSTOM_FAILED_LOGIN
 		record_failed_login(user,
 		    get_canonical_hostname(options.use_dns), "ssh");