Revert "Add GUC checks for ssl_min_protocol_version and ssl_max_protocol_version"

This reverts commit 41aadee, as the GUC checks could run on older values
with the new values used, and result in incorrect errors if both
parameters are changed at the same time.

Per complaint from Tom Lane.

Discussion: https://postgr.es/m/27574.1581015893@sss.pgh.pa.us
Backpatch-through: 12

diff --git a/src/backend/utils/misc/guc.c b/src/backend/utils/misc/guc.c
index 00520fe43fe7064db133ef92d3aa1226d33b75cb..a70e79c48910171baa898c750ed50ed1293ab2bc 100644 (file)
--- a/src/backend/utils/misc/guc.c
+++ b/src/backend/utils/misc/guc.c
@@ -201,10 +201,6 @@ static bool check_cluster_name(char **newval, void **extra, GucSource source);
 static const char *show_unix_socket_permissions(void);
 static const char *show_log_file_mode(void);
 static const char *show_data_directory_mode(void);
-static bool check_ssl_min_protocol_version(int *newval, void **extra,
-                                          GucSource source);
-static bool check_ssl_max_protocol_version(int *newval, void **extra,
-                                          GucSource source);
 static bool check_recovery_target_timeline(char **newval, void **extra, GucSource source);
 static void assign_recovery_target_timeline(const char *newval, void *extra);
 static bool check_recovery_target(char **newval, void **extra, GucSource source);
@@ -4526,7 +4522,7 @@ static struct config_enum ConfigureNamesEnum[] =
        &ssl_min_protocol_version,
        PG_TLS1_VERSION,
        ssl_protocol_versions_info + 1, /* don't allow PG_TLS_ANY */
-       check_ssl_min_protocol_version, NULL, NULL
+       NULL, NULL, NULL
    },
 
    {
@@ -4538,7 +4534,7 @@ static struct config_enum ConfigureNamesEnum[] =
        &ssl_max_protocol_version,
        PG_TLS_ANY,
        ssl_protocol_versions_info,
-       check_ssl_max_protocol_version, NULL, NULL
+       NULL, NULL, NULL
    },
 
    /* End-of-list marker */
@@ -11442,49 +11438,6 @@ show_data_directory_mode(void)
    return buf;
 }
 
-static bool
-check_ssl_min_protocol_version(int *newval, void **extra, GucSource source)
-{
-   int         new_ssl_min_protocol_version = *newval;
-
-   /* PG_TLS_ANY is not supported for the minimum bound */
-   Assert(new_ssl_min_protocol_version > PG_TLS_ANY);
-
-   if (ssl_max_protocol_version &&
-       new_ssl_min_protocol_version > ssl_max_protocol_version)
-   {
-       GUC_check_errhint("\"%s\" cannot be higher than \"%s\".",
-                         "ssl_min_protocol_version",
-                         "ssl_max_protocol_version");
-       GUC_check_errcode(ERRCODE_INVALID_PARAMETER_VALUE);
-       return false;
-   }
-
-   return true;
-}
-
-static bool
-check_ssl_max_protocol_version(int *newval, void **extra, GucSource source)
-{
-   int         new_ssl_max_protocol_version = *newval;
-
-   /* if PG_TLS_ANY, there is no need to check the bounds */
-   if (new_ssl_max_protocol_version == PG_TLS_ANY)
-       return true;
-
-   if (ssl_min_protocol_version &&
-       ssl_min_protocol_version > new_ssl_max_protocol_version)
-   {
-       GUC_check_errhint("\"%s\" cannot be lower than \"%s\".",
-                         "ssl_max_protocol_version",
-                         "ssl_min_protocol_version");
-       GUC_check_errcode(ERRCODE_INVALID_PARAMETER_VALUE);
-       return false;
-   }
-
-   return true;
-}
-
 static bool
 check_recovery_target_timeline(char **newval, void **extra, GucSource source)
 {

diff --git a/src/test/ssl/t/001_ssltests.pl b/src/test/ssl/t/001_ssltests.pl
index 66278381bd24be8d9ec56dd4ec181ff2de1f8af9..67a3a28db6a1d997cf8dbddb17d5b82bd25264af 100644 (file)
--- a/src/test/ssl/t/001_ssltests.pl
+++ b/src/test/ssl/t/001_ssltests.pl
@@ -13,7 +13,7 @@ use SSLServer;
 
 if ($ENV{with_openssl} eq 'yes')
 {
-   plan tests => 77;
+   plan tests => 75;
 }
 else
 {
@@ -87,24 +87,6 @@ command_ok(
    'restart succeeds with password-protected key file');
 $node->_update_pid(1);
 
-# Test compatibility of SSL protocols.
-# TLSv1.1 is lower than TLSv1.2, so it won't work.
-$node->append_conf(
-   'postgresql.conf',
-   qq{ssl_min_protocol_version='TLSv1.2'
-ssl_max_protocol_version='TLSv1.1'});
-command_fails(
-   [ 'pg_ctl', '-D', $node->data_dir, '-l', $node->logfile, 'restart' ],
-   'restart fails with incorrect SSL protocol bounds');
-# Go back to the defaults, this works.
-$node->append_conf(
-   'postgresql.conf',
-   qq{ssl_min_protocol_version='TLSv1'
-ssl_max_protocol_version=''});
-command_ok(
-   [ 'pg_ctl', '-D', $node->data_dir, '-l', $node->logfile, 'restart' ],
-   'restart succeeds with correct SSL protocol bounds');
-
 ### Run client-side tests.
 ###
 ### Test that libpq accepts/rejects the connection correctly, depending

diff --git a/src/test/ssl/t/SSLServer.pm b/src/test/ssl/t/SSLServer.pm
index 228cddf3a2cfbd02cfce865ce8130874c7ad930f..d25c38dbbc7f1271f119ded38ebfde52e85ecb73 100644 (file)
--- a/src/test/ssl/t/SSLServer.pm
+++ b/src/test/ssl/t/SSLServer.pm
@@ -128,7 +128,7 @@ sub configure_test_server_for_ssl
    print $conf "log_statement=all\n";
 
    # enable SSL and set up server key
-   print $conf "include 'sslconfig.conf'\n";
+   print $conf "include 'sslconfig.conf'";
 
    close $conf;