postfix-3.9.5

postfix/HISTORY

@@ -28132,3 +28132,53 @@ Apologies for any names omitted.
 	add an extra newline character before appending the new
 	setting, causing information to become garbled. Fix by
 	Michael Tokarev. File: postconf/postconf_edit.c.
+
+20250710
+
+	Bugfix (defect introduced: postfix-2.2, date 20050203):
+	after detecting a lookup table change, and after starting
+	a new postscreen process, the old postscreen process logged
+	an ENOTSOCK error while attempting to accept a connection
+	on a socket that it was no longer listening on. This error
+	was introduced first in the multi_server skeleton code, and
+	was five years later duplicated in the event_server skeleton
+	that was created for postscreen. Problem reported by Florian
+	Piekert. Files: master/multi_server.c, master/event_server.c.
+
+20250714
+
+	Deleted an <openssl/engine.h> dependency, because the feature is
+	being removed from OpenSSL, and Postfix no longer needs it. File:
+	posttls-finger/posttls-finger.c.
+
+20250716
+
+	Bugfix (defect introduced: Postfix 2.8, date 20101230):
+	after detecting a cache table change and before starting a
+	new postscreen process, the old postscreen process did not
+	close the postscreen_cache_map, and therefore kept an
+	exclusive lock that could prevent a new postscreen process
+	from starting. Problem reported by Florian Piekert. File:
+	postscreen/postscreen.c.
+
+20250717
+
+	Workaround: Postfix daemons no longer automatically restart
+	after a btree:, dbm:, hash:, lmdb:, or sdbm: table file
+	modification time change, when they opened that table for
+	writing. Files: util/dict.c, util/dict_db.c, util/dict_dbm.c,
+	util/dict_lmdb.c, util/dict_sdbm.c.
+
+20250801
+
+	Bugfix (defect introduced: Postfix 3.7): incorrect backwards
+	compatible support for the legacy configuration parameters
+	tlsproxy_client_level and tlsproxy_client_policy. This
+	disabled the tlsproxy TLS client role when a legacy parameter
+	was set. Reported by John Doe, diagnosed by Viktor Dukhovni.
+	File: global/mail_params.h.
+
+	Bugfix (defect introduced: Postfix 3.4): with the TLS client
+	role disabled by configuration, the tlsproxy daemon
+	dereferenced a null pointer while handling a tlsproxy client
+	request. Reported by John Doe. File: tlsproxy/tlsproxy.c.

postfix/src/global/mail_params.h

@@ -4167,7 +4167,9 @@ extern bool var_tlsp_clnt_enforce_tls;
 /* Migrate an incorrect name. */
 #define OBS_TLSP_CLNT_LEVEL		"tlsproxy_client_level"
 #define VAR_TLSP_CLNT_LEVEL		"tlsproxy_client_security_level"
-#define DEF_TLSP_CLNT_LEVEL		"${" OBS_TLSP_CLNT_LEVEL ":$" VAR_SMTP_TLS_LEVEL "}"
+#define DEF_TLSP_CLNT_LEVEL		"${" OBS_TLSP_CLNT_LEVEL "?{$" \
+					OBS_TLSP_CLNT_LEVEL "}:{$" \
+					VAR_SMTP_TLS_LEVEL "}}"
 extern char *var_tlsp_clnt_level;
 
 #define VAR_TLSP_CLNT_PER_SITE		"tlsproxy_client_per_site"
@@ -4177,7 +4179,9 @@ extern char *var_tlsp_clnt_per_site;
 /* Migrate an incorrect name. */
 #define OBS_TLSP_CLNT_POLICY		"tlsproxy_client_policy"
 #define VAR_TLSP_CLNT_POLICY		"tlsproxy_client_policy_maps"
-#define DEF_TLSP_CLNT_POLICY		"${" OBS_TLSP_CLNT_POLICY ":$" VAR_SMTP_TLS_POLICY "}"
+#define DEF_TLSP_CLNT_POLICY		"${" OBS_TLSP_CLNT_POLICY "?{$" \
+					OBS_TLSP_CLNT_POLICY "}:{$" \
+					VAR_SMTP_TLS_POLICY "}}"
 extern char *var_tlsp_clnt_policy;
 
  /*

postfix/src/global/mail_version.h

@@ -20,8 +20,8 @@
   * Patches change both the patchlevel and the release date. Snapshots have no
   * patchlevel; they change the release date only.
   */
-#define MAIL_RELEASE_DATE	"20250422"
+#define MAIL_RELEASE_DATE	"20250818"
-#define MAIL_VERSION_NUMBER	"3.9.4"
+#define MAIL_VERSION_NUMBER	"3.9.5"
 
 #ifdef SNAPSHOT
 #define MAIL_VERSION_DATE	"-" MAIL_RELEASE_DATE

postfix/src/master/event_server.c

@@ -273,6 +273,7 @@ static unsigned event_server_generation;
 static void (*event_server_pre_disconn) (VSTREAM *, char *, char **);
 static void (*event_server_slow_exit) (char *, char **);
 static int event_server_watchdog = 1000;
+static int event_server_drain_was_called = 0;
 
 /* event_server_exit - normal termination */
 
@@ -327,6 +328,9 @@ int     event_server_drain(void)
     const char *myname = "event_server_drain";
     int     fd;
 
+    if (event_server_drain_was_called)
+	return (0);
+
     switch (fork()) {
 	/* Try again later. */
     case -1:
@@ -343,6 +347,7 @@ int     event_server_drain(void)
 		msg_warn("%s: dup2(%d, %d): %m", myname, STDIN_FILENO, fd);
 	}
 	var_use_limit = 1;
+	event_server_drain_was_called = 1;
 	return (0);
 	/* Let the master start a new process. */
     default:
@@ -445,6 +450,9 @@ static void event_server_accept_local(int unused_event, void *context)
     int     time_left = -1;
     int     fd;
 
+    if (event_server_drain_was_called)
+	return;
+
     /*
      * Be prepared for accept() to fail because some other process already
      * got the connection (the number of processes competing for clients is
@@ -457,6 +465,8 @@ static void event_server_accept_local(int unused_event, void *context)
 
     if (event_server_pre_accept)
 	event_server_pre_accept(event_server_name, event_server_argv);
+    if (event_server_drain_was_called)
+	return;
     fd = LOCAL_ACCEPT(listen_fd);
     if (event_server_lock != 0
 	&& myflock(vstream_fileno(event_server_lock), INTERNAL_LOCK,
@@ -483,6 +493,9 @@ static void event_server_accept_pass(int unused_event, void *context)
     int     fd;
     HTABLE *attr = 0;
 
+    if (event_server_drain_was_called)
+	return;
+
     /*
      * Be prepared for accept() to fail because some other process already
      * got the connection (the number of processes competing for clients is
@@ -495,6 +508,8 @@ static void event_server_accept_pass(int unused_event, void *context)
 
     if (event_server_pre_accept)
 	event_server_pre_accept(event_server_name, event_server_argv);
+    if (event_server_drain_was_called)
+	return;
     fd = pass_accept_attr(listen_fd, &attr);
     if (event_server_lock != 0
 	&& myflock(vstream_fileno(event_server_lock), INTERNAL_LOCK,
@@ -520,6 +535,9 @@ static void event_server_accept_inet(int unused_event, void *context)
     int     time_left = -1;
     int     fd;
 
+    if (event_server_drain_was_called)
+	return;
+
     /*
      * Be prepared for accept() to fail because some other process already
      * got the connection (the number of processes competing for clients is
@@ -532,6 +550,8 @@ static void event_server_accept_inet(int unused_event, void *context)
 
     if (event_server_pre_accept)
 	event_server_pre_accept(event_server_name, event_server_argv);
+    if (event_server_drain_was_called)
+	return;
     fd = inet_accept(listen_fd);
     if (event_server_lock != 0
 	&& myflock(vstream_fileno(event_server_lock), INTERNAL_LOCK,

postfix/src/master/multi_server.c

@@ -260,6 +260,7 @@ static VSTREAM *multi_server_lock;
 static int multi_server_in_flow_delay;
 static unsigned multi_server_generation;
 static void (*multi_server_pre_disconn) (VSTREAM *, char *, char **);
+static int multi_server_drain_was_called = 0;
 
 /* multi_server_exit - normal termination */
 
@@ -295,6 +296,9 @@ int     multi_server_drain(void)
     const char *myname = "multi_server_drain";
     int     fd;
 
+    if (multi_server_drain_was_called)
+	return (0);
+
     switch (fork()) {
 	/* Try again later. */
     case -1:
@@ -311,6 +315,7 @@ int     multi_server_drain(void)
 		msg_warn("%s: dup2(%d, %d): %m", myname, STDIN_FILENO, fd);
 	}
 	var_use_limit = 1;
+	multi_server_drain_was_called = 1;
 	return (0);
 	/* Let the master start a new process. */
     default:
@@ -429,6 +434,9 @@ static void multi_server_accept_local(int unused_event, void *context)
     int     time_left = -1;
     int     fd;
 
+    if (multi_server_drain_was_called)
+	return;
+
     /*
      * Be prepared for accept() to fail because some other process already
      * got the connection (the number of processes competing for clients is
@@ -441,6 +449,8 @@ static void multi_server_accept_local(int unused_event, void *context)
 
     if (multi_server_pre_accept)
 	multi_server_pre_accept(multi_server_name, multi_server_argv);
+    if (multi_server_drain_was_called)
+	return;
     fd = LOCAL_ACCEPT(listen_fd);
     if (multi_server_lock != 0
 	&& myflock(vstream_fileno(multi_server_lock), INTERNAL_LOCK,
@@ -467,6 +477,9 @@ static void multi_server_accept_pass(int unused_event, void *context)
     int     fd;
     HTABLE *attr = 0;
 
+    if (multi_server_drain_was_called)
+	return;
+
     /*
      * Be prepared for accept() to fail because some other process already
      * got the connection (the number of processes competing for clients is
@@ -479,6 +492,8 @@ static void multi_server_accept_pass(int unused_event, void *context)
 
     if (multi_server_pre_accept)
 	multi_server_pre_accept(multi_server_name, multi_server_argv);
+    if (multi_server_drain_was_called)
+	return;
     fd = pass_accept_attr(listen_fd, &attr);
     if (multi_server_lock != 0
 	&& myflock(vstream_fileno(multi_server_lock), INTERNAL_LOCK,
@@ -504,6 +519,9 @@ static void multi_server_accept_inet(int unused_event, void *context)
     int     time_left = -1;
     int     fd;
 
+    if (multi_server_drain_was_called)
+	return;
+
     /*
      * Be prepared for accept() to fail because some other process already
      * got the connection (the number of processes competing for clients is
@@ -516,6 +534,8 @@ static void multi_server_accept_inet(int unused_event, void *context)
 
     if (multi_server_pre_accept)
 	multi_server_pre_accept(multi_server_name, multi_server_argv);
+    if (multi_server_drain_was_called)
+	return;
     fd = inet_accept(listen_fd);
     if (multi_server_lock != 0
 	&& myflock(vstream_fileno(multi_server_lock), INTERNAL_LOCK,

postfix/src/postscreen/postscreen.c

@@ -996,7 +996,7 @@ static void pre_accept(char *unused_name, char **unused_argv)
     if (new_event_time >= last_event_time + 1
 	&& (name = dict_changed_name()) != 0) {
 	msg_info("table %s has changed - finishing in the background", name);
-	event_server_drain();
+	psc_drain(unused_name, unused_argv);
     } else {
 	last_event_time = new_event_time;
     }

postfix/src/posttls-finger/posttls-finger.c

@@ -414,7 +414,6 @@
 
 #ifdef USE_TLS
 #include <tls_proxy.h>
-#include <openssl/engine.h>
 #endif
 
  /*

postfix/src/tlsproxy/tlsproxy.c

@@ -1252,6 +1252,12 @@ static TLS_APPL_STATE *tlsp_client_init(TLS_CLIENT_PARAMS *tls_params,
     init_buf = vstring_alloc(100);
     init_key = tls_proxy_client_init_serialize(attr_print_plain, init_buf,
 					       init_props);
+#define TLSP_CLIENT_INIT_RETURN(retval) do { \
+	vstring_free(init_buf); \
+	vstring_free(param_buf); \
+	return (retval); \
+    } while (0)
+
     if (tlsp_pre_jail_done == 0) {
 	if (tlsp_pre_jail_client_param_key == 0
 	    || tlsp_pre_jail_client_init_key == 0) {
@@ -1269,9 +1275,12 @@ static TLS_APPL_STATE *tlsp_client_init(TLS_CLIENT_PARAMS *tls_params,
      * TLS_APPL_STATE instance; this makes a mismatch of TLS_CLIENT_PARAMS
      * settings problematic.
      */
-    if (tlsp_pre_jail_done
+    else if (tlsp_pre_jail_client_param_key == 0
-	&& !been_here_fixed(tlsp_params_mismatch_filter, param_key)
+	     || tlsp_pre_jail_client_init_key == 0) {
-	&& strcmp(tlsp_pre_jail_client_param_key, param_key) != 0) {
+	msg_warn("TLS client role is disabled by configuration");
+	TLSP_CLIENT_INIT_RETURN(0);
+    } else if (!been_here_fixed(tlsp_params_mismatch_filter, param_key)
+	       && strcmp(tlsp_pre_jail_client_param_key, param_key) != 0) {
 	msg_warn("request from tlsproxy client with unexpected settings");
 	tlsp_log_config_diff(tlsp_pre_jail_client_param_key, param_key);
 	log_hints = 1;
@@ -1346,9 +1355,7 @@ static TLS_APPL_STATE *tlsp_client_init(TLS_CLIENT_PARAMS *tls_params,
 			 SSL_MODE_ENABLE_PARTIAL_WRITE
 			 | SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER);
     }
-    vstring_free(init_buf);
+    TLSP_CLIENT_INIT_RETURN(appl_state);
-    vstring_free(param_buf);
-    return (appl_state);
 }
 
 /* tlsp_close_event - pre-handshake plaintext-client close event */
@@ -1482,6 +1489,7 @@ static void tlsp_get_request_event(int event, void *context)
 				TLSP_INIT_TIMEOUT, (void *) state);
 	return;
     } else {
+	state->flags |= TLSP_FLAG_DO_HANDSHAKE;
 	tlsp_request_read_event(plaintext_fd, tlsp_get_fd_event,
 				TLSP_INIT_TIMEOUT, (void *) state);
 	return;

postfix/src/tlsproxy/tlsproxy_state.c

@@ -105,7 +105,7 @@ TLSP_STATE *tlsp_state_create(const char *service,
 {
     TLSP_STATE *state = (TLSP_STATE *) mymalloc(sizeof(*state));
 
-    state->flags = TLSP_FLAG_DO_HANDSHAKE;
+    state->flags = 0;
     state->service = mystrdup(service);
     state->plaintext_stream = plaintext_stream;
     state->plaintext_buf = 0;

postfix/src/util/dict.c

@@ -147,8 +147,8 @@
 /* .IP "char *context"
 /*	Application context from the caller.
 /* .PP
-/*	dict_changed_name() returns non-zero when any dictionary needs to
+/*	dict_changed_name() returns non-zero when any dictionary is
-/*	be re-opened because it has changed or because it was unlinked.
+/*	opened read-only and has changed, or because it was unlinked.
 /*	A non-zero result is the name of a changed dictionary.
 /*
 /*	dict_load_file_xt() reads name-value entries from the named file.
@@ -601,11 +601,12 @@ const char *dict_changed_name(void)
 	dict = ((DICT_NODE *) h->value)->dict;
 	if (dict->stat_fd < 0)			/* not file-based */
 	    continue;
-	if (dict->mtime == 0)			/* not bloody likely */
+	if (dict->mtime < 0)			/* not bloody likely */
-	    msg_warn("%s: table %s: null time stamp", myname, h->key);
+	    msg_warn("%s: table %s: negative time stamp", myname, h->key);
 	if (fstat(dict->stat_fd, &st) < 0)
 	    msg_fatal("%s: fstat: %m", myname);
 	if (((dict->flags & DICT_FLAG_MULTI_WRITER) == 0
+	     && dict->mtime > 0
 	     && st.st_mtime != dict->mtime)
 	    || st.st_nlink == 0)
 	    status = h->key;

postfix/src/util/dict_db.c

@@ -789,7 +789,8 @@ static DICT *dict_db_open(const char *class, const char *path, int open_flags,
     dict_db->dict.stat_fd = dbfd;
     if (fstat(dict_db->dict.stat_fd, &st) < 0)
 	msg_fatal("dict_db_open: fstat: %m");
-    dict_db->dict.mtime = st.st_mtime;
+    if (open_flags == O_RDONLY)
+	dict_db->dict.mtime = st.st_mtime;
     dict_db->dict.owner.uid = st.st_uid;
     dict_db->dict.owner.status = (st.st_uid != 0);
 

postfix/src/util/dict_dbm.c

@@ -472,7 +472,8 @@ DICT   *dict_dbm_open(const char *path, int open_flags, int dict_flags)
 	msg_fatal("open database %s: cannot support GDBM", path);
     if (fstat(dict_dbm->dict.stat_fd, &st) < 0)
 	msg_fatal("dict_dbm_open: fstat: %m");
-    dict_dbm->dict.mtime = st.st_mtime;
+    if (open_mode == O_RDONLY)
+	dict_dbm->dict.mtime = st.st_mtime;
     dict_dbm->dict.owner.uid = st.st_uid;
     dict_dbm->dict.owner.status = (st.st_uid != 0);
 

postfix/src/util/dict_lmdb.c

@@ -653,7 +653,8 @@ DICT   *dict_lmdb_open(const char *path, int open_flags, int dict_flags)
 	msg_fatal("dict_lmdb_open: fstat: %m");
     dict_lmdb->dict.lock_fd = dict_lmdb->dict.stat_fd = db_fd;
     dict_lmdb->dict.lock_type = MYFLOCK_STYLE_FCNTL;
-    dict_lmdb->dict.mtime = st.st_mtime;
+    if (open_flags == O_RDONLY)
+	dict_lmdb->dict.mtime = st.st_mtime;
     dict_lmdb->dict.owner.uid = st.st_uid;
     dict_lmdb->dict.owner.status = (st.st_uid != 0);
 

postfix/src/util/dict_sdbm.c

@@ -449,7 +449,8 @@ DICT   *dict_sdbm_open(const char *path, int open_flags, int dict_flags)
     dict_sdbm->dict.stat_fd = sdbm_pagfno(dbm);
     if (fstat(dict_sdbm->dict.stat_fd, &st) < 0)
 	msg_fatal("dict_sdbm_open: fstat: %m");
-    dict_sdbm->dict.mtime = st.st_mtime;
+    if (open_flags == O_RDONLY)
+	dict_sdbm->dict.mtime = st.st_mtime;
     dict_sdbm->dict.owner.uid = st.st_uid;
     dict_sdbm->dict.owner.status = (st.st_uid != 0);