Quieten logs when multiple from= restrictions are used in different

authorized_keys lines for the same key; it's still not ideal, but at
least you'll only get one log entry per key (closes: #630606).

2 files changed, 124 insertions, 0 deletions

diff --git a/debian/patches/auth-log-verbosity.patch b/debian/patches/auth-log-verbosity.patch
new file mode 100644
index 000000000..7aea6690d
--- /dev/null
+++ b/debian/patches/auth-log-verbosity.patch
@@ -0,0 +1,123 @@
+Description: Quieten logs when multiple from= restrictions are used
+Author: Colin Watson <cjwatson@debian.org>
+Bug-Debian: http://bugs.debian.org/630606
+Forwarded: no
+Last-Update: 2011-07-28
+
+Index: b/auth-options.c
+===================================================================
+--- a/auth-options.c
++++ b/auth-options.c
+@@ -58,9 +58,20 @@
+ /* "principals=" option. */
+ char *authorized_principals = NULL;
+ 
++/* Throttle log messages. */
++int logged_from_hostip = 0;
++int logged_cert_hostip = 0;
++
+ extern ServerOptions options;
+ 
+ void
++auth_start_parse_options(void)
++{
++       logged_from_hostip = 0;
++       logged_cert_hostip = 0;
++}
++
++void
+ auth_clear_options(void)
+ {
+        no_agent_forwarding_flag = 0;
+@@ -288,10 +299,13 @@
+                                /* FALLTHROUGH */
+                        case 0:
+                                xfree(patterns);
+-                               logit("Authentication tried for %.100s with "
+-                                   "correct key but not from a permitted "
+-                                   "host (host=%.200s, ip=%.200s).",
+-                                   pw->pw_name, remote_host, remote_ip);
++                               if (!logged_from_hostip) {
++                                       logit("Authentication tried for %.100s with "
++                                           "correct key but not from a permitted "
++                                           "host (host=%.200s, ip=%.200s).",
++                                           pw->pw_name, remote_host, remote_ip);
++                                       logged_from_hostip = 1;
++                               }
+                                auth_debug_add("Your host '%.200s' is not "
+                                    "permitted to use this key for login.",
+                                    remote_host);
+@@ -526,11 +540,14 @@
+                                        break;
+                                case 0:
+                                        /* no match */
+-                                       logit("Authentication tried for %.100s "
+-                                           "with valid certificate but not "
+-                                           "from a permitted host "
+-                                           "(ip=%.200s).", pw->pw_name,
+-                                           remote_ip);
++                                       if (!logged_cert_hostip) {
++                                               logit("Authentication tried for %.100s "
++                                                   "with valid certificate but not "
++                                                   "from a permitted host "
++                                                   "(ip=%.200s).", pw->pw_name,
++                                                   remote_ip);
++                                               logged_cert_hostip = 1;
++                                       }
+                                        auth_debug_add("Your address '%.200s' "
+                                            "is not permitted to use this "
+                                            "certificate for login.",
+Index: b/auth-options.h
+===================================================================
+--- a/auth-options.h
++++ b/auth-options.h
+@@ -33,6 +33,7 @@
+ extern int key_is_cert_authority;
+ extern char *authorized_principals;
+ 
++void   auth_start_parse_options(void);
+ int    auth_parse_options(struct passwd *, char *, char *, u_long);
+ void   auth_clear_options(void);
+ int    auth_cert_options(Key *, struct passwd *);
+Index: b/auth-rsa.c
+===================================================================
+--- a/auth-rsa.c
++++ b/auth-rsa.c
+@@ -193,6 +193,8 @@
+ 
+        key = key_new(KEY_RSA1);
+ 
++       auth_start_parse_options();
++
+        /*
+         * Go though the accepted keys, looking for the current key.  If
+         * found, perform a challenge-response dialog to verify that the
+Index: b/auth2-pubkey.c
+===================================================================
+--- a/auth2-pubkey.c
++++ b/auth2-pubkey.c
+@@ -211,6 +211,7 @@
+                restore_uid();
+                return 0;
+        }
++       auth_start_parse_options();
+        while (read_keyfile_line(f, file, line, sizeof(line), &linenum) != -1) {
+                /* Skip leading whitespace. */
+                for (cp = line; *cp == ' ' || *cp == '\t'; cp++)
+@@ -280,6 +281,8 @@
+        found_key = 0;
+        found = key_new(key_is_cert(key) ? KEY_UNSPEC : key->type);
+ 
++       auth_start_parse_options();
++
+        while (read_keyfile_line(f, file, line, sizeof(line), &linenum) != -1) {
+                char *cp, *key_options = NULL;
+ 
+@@ -416,6 +419,7 @@
+        if (key_cert_check_authority(key, 0, 1,
+            principals_file == NULL ? pw->pw_name : NULL, &reason) != 0)
+                goto fail_reason;
++       auth_start_parse_options();
+        if (auth_cert_options(key, pw) != 0)
+                goto out;
+ 
diff --git a/debian/patches/series b/debian/patches/series
index 01ef70076..3450e4c55 100644
--- a/debian/patches/series
+++ b/debian/patches/series
@@ -40,6 +40,7 @@ doc-hash-tab-completion.patch
 selinux-build-failure.patch
 ssh-add-fifo.patch
 hostbased-ecdsa.patch
+auth-log-verbosity.patch
 
 # Debian-specific configuration
 gnome-ssh-askpass2-icon.patch