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Allow ListenAddress, Port and AddressFamily in any order. bz#68, ok djm@, jmc@ (for the man page bit).
This commit is contained in:
dtucker@openbsd.org
Damien Miller
parent
c1d5bcf1aa
commit
531a57a389
66
servconf.c
66
servconf.c
@ -1,5 +1,5 @@
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/* $OpenBSD: servconf.c,v 1.265 2015/04/27 21:42:48 djm Exp $ */
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/* $OpenBSD: servconf.c,v 1.266 2015/04/29 03:48:56 dtucker Exp $ */
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/*
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* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
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* All rights reserved
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@ -78,6 +78,8 @@ initialize_server_options(ServerOptions *options)
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/* Standard Options */
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options->num_ports = 0;
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options->ports_from_cmdline = 0;
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options->queued_listen_addrs = NULL;
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options->num_queued_listens = 0;
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options->listen_addrs = NULL;
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options->address_family = -1;
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options->num_host_key_files = 0;
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@ -205,6 +207,8 @@ fill_default_server_options(ServerOptions *options)
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/* No certificates by default */
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if (options->num_ports == 0)
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options->ports[options->num_ports++] = SSH_DEFAULT_PORT;
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if (options->address_family == -1)
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options->address_family = AF_UNSPEC;
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if (options->listen_addrs == NULL)
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add_listen_addr(options, NULL, 0);
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if (options->pid_file == NULL)
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@ -591,10 +595,6 @@ add_listen_addr(ServerOptions *options, char *addr, int port)
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{
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u_int i;
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if (options->num_ports == 0)
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options->ports[options->num_ports++] = SSH_DEFAULT_PORT;
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if (options->address_family == -1)
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options->address_family = AF_UNSPEC;
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if (port == 0)
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for (i = 0; i < options->num_ports; i++)
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add_one_listen_addr(options, addr, options->ports[i]);
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@ -624,6 +624,51 @@ add_one_listen_addr(ServerOptions *options, char *addr, int port)
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options->listen_addrs = aitop;
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}
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/*
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* Queue a ListenAddress to be processed once we have all of the Ports
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* and AddressFamily options.
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*/
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static void
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queue_listen_addr(ServerOptions *options, char *addr, int port)
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{
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options->queued_listen_addrs = xreallocarray(
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options->queued_listen_addrs, options->num_queued_listens + 1,
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sizeof(addr));
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options->queued_listen_ports = xreallocarray(
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options->queued_listen_ports, options->num_queued_listens + 1,
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sizeof(port));
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options->queued_listen_addrs[options->num_queued_listens] =
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xstrdup(addr);
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options->queued_listen_ports[options->num_queued_listens] = port;
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options->num_queued_listens++;
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}
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/*
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* Process queued (text) ListenAddress entries.
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*/
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static void
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process_queued_listen_addrs(ServerOptions *options)
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{
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u_int i;
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if (options->num_ports == 0)
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options->ports[options->num_ports++] = SSH_DEFAULT_PORT;
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if (options->address_family == -1)
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options->address_family = AF_UNSPEC;
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for (i = 0; i < options->num_queued_listens; i++) {
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add_listen_addr(options, options->queued_listen_addrs[i],
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options->queued_listen_ports[i]);
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free(options->queued_listen_addrs[i]);
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options->queued_listen_addrs[i] = NULL;
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}
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free(options->queued_listen_addrs);
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options->queued_listen_addrs = NULL;
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free(options->queued_listen_ports);
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options->queued_listen_ports = NULL;
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options->num_queued_listens = 0;
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}
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struct connection_info *
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get_connection_info(int populate, int use_dns)
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{
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@ -940,9 +985,6 @@ process_server_config_line(ServerOptions *options, char *line,
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/* ignore ports from configfile if cmdline specifies ports */
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if (options->ports_from_cmdline)
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return 0;
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if (options->listen_addrs != NULL)
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fatal("%s line %d: ports must be specified before "
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"ListenAddress.", filename, linenum);
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if (options->num_ports >= MAX_PORTS)
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fatal("%s line %d: too many ports.",
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filename, linenum);
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@ -994,7 +1036,7 @@ process_server_config_line(ServerOptions *options, char *line,
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/* check for bare IPv6 address: no "[]" and 2 or more ":" */
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if (strchr(arg, '[') == NULL && (p = strchr(arg, ':')) != NULL
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&& strchr(p+1, ':') != NULL) {
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add_listen_addr(options, arg, 0);
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queue_listen_addr(options, arg, 0);
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break;
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}
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p = hpdelim(&arg);
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@ -1007,16 +1049,13 @@ process_server_config_line(ServerOptions *options, char *line,
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else if ((port = a2port(arg)) <= 0)
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fatal("%s line %d: bad port number", filename, linenum);
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add_listen_addr(options, p, port);
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queue_listen_addr(options, p, port);
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break;
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case sAddressFamily:
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intptr = &options->address_family;
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multistate_ptr = multistate_addressfamily;
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if (options->listen_addrs != NULL)
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fatal("%s line %d: address family must be specified "
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"before ListenAddress.", filename, linenum);
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parse_multistate:
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arg = strdelim(&cp);
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if (!arg || *arg == '\0')
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@ -1951,6 +1990,7 @@ parse_server_config(ServerOptions *options, const char *filename, Buffer *conf,
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if (bad_options > 0)
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fatal("%s: terminating, %d bad configuration options",
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filename, bad_options);
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process_queued_listen_addrs(options);
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}
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static const char *
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@ -1,4 +1,4 @@
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/* $OpenBSD: servconf.h,v 1.116 2015/01/13 07:39:19 djm Exp $ */
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/* $OpenBSD: servconf.h,v 1.117 2015/04/29 03:48:56 dtucker Exp $ */
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/*
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* Author: Tatu Ylonen <ylo@cs.hut.fi>
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@ -58,7 +58,9 @@ typedef struct {
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u_int num_ports;
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u_int ports_from_cmdline;
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int ports[MAX_PORTS]; /* Port number to listen on. */
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char *listen_addr; /* Address on which the server listens. */
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u_int num_queued_listens;
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char **queued_listen_addrs;
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int *queued_listen_ports;
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struct addrinfo *listen_addrs; /* Addresses on which the server listens. */
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int address_family; /* Address family used by the server. */
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char *host_key_files[MAX_HOSTKEYS]; /* Files containing host keys. */
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@ -33,8 +33,8 @@
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.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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.\"
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.\" $OpenBSD: sshd_config.5,v 1.199 2015/04/28 13:47:38 jmc Exp $
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.Dd $Mdocdate: April 28 2015 $
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.\" $OpenBSD: sshd_config.5,v 1.200 2015/04/29 03:48:56 dtucker Exp $
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.Dd $Mdocdate: April 29 2015 $
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.Dt SSHD_CONFIG 5
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.Os
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.Sh NAME
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@ -830,16 +830,13 @@ The following forms may be used:
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If
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.Ar port
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is not specified,
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sshd will listen on the address and all prior
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sshd will listen on the address and all
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.Cm Port
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options specified.
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The default is to listen on all local addresses.
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Multiple
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.Cm ListenAddress
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options are permitted.
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Additionally, any
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.Cm Port
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options must precede this option for non-port qualified addresses.
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.It Cm LoginGraceTime
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The server disconnects after this time if the user has not
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successfully logged in.
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