daemon: allow more than one host address given via --listen

When the host has more than one interfaces, daemon can listen to all
of them by not giving any --listen option, or listen to only one.
Teach it to accept more than one --listen options.

Remove the hostname information form the die, if no socket could be
created. It would only trigger when no interface out of either all
interface or the ones specified on the command line with --listen
options, can be listened to and so the user does know which "host" was
asked.

Signed-off-by: Alexander Sulfrian <alexander@sulfrian.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/Documentation/git-daemon.txt b/Documentation/git-daemon.txt
index 01c9f8eb9eff634fe8ab99908c62207ebecd5e31..685aa58cec823e69acc8f247e019ebdb8e9415ce 100644 (file)
--- a/Documentation/git-daemon.txt
+++ b/Documentation/git-daemon.txt
@@ -85,6 +85,7 @@ OPTIONS
        be either an IPv4 address or an IPv6 address if supported.  If IPv6
        is not supported, then --listen=hostname is also not supported and
        --listen must be given an IPv4 address.
+       Can be given more than once.
        Incompatible with '--inetd' option.
 
 --port=n::

diff --git a/daemon.c b/daemon.c
index c666cedde734c7c2f8074c33c052a4dd33951efb..d6e20c6771104203be143f9bdda2e68b570d0328 100644 (file)
--- a/daemon.c
+++ b/daemon.c
@@ -3,6 +3,7 @@
 #include "exec_cmd.h"
 #include "run-command.h"
 #include "strbuf.h"
+#include "string-list.h"
 
 #include <syslog.h>
 
@@ -866,9 +867,21 @@ static int setup_named_sock(char *listen_addr, int listen_port, struct socketlis
 
 #endif
 
-static void socksetup(char *listen_addr, int listen_port, struct socketlist *socklist)
+static void socksetup(struct string_list *listen_addr, int listen_port, struct socketlist *socklist)
 {
-       setup_named_sock(listen_addr, listen_port, socklist);
+       if (!listen_addr->nr)
+               setup_named_sock(NULL, listen_port, socklist);
+       else {
+               int i, socknum;
+               for (i = 0; i < listen_addr->nr; i++) {
+                       socknum = setup_named_sock(listen_addr->items[i].string,
+                                                  listen_port, socklist);
+
+                       if (socknum == 0)
+                               logerror("unable to allocate any listen sockets for host %s on port %u",
+                                        listen_addr->items[i].string, listen_port);
+               }
+       }
 }
 
 static int service_loop(struct socketlist *socklist)
@@ -959,14 +972,14 @@ static void store_pid(const char *path)
                die_errno("failed to write pid file '%s'", path);
 }
 
-static int serve(char *listen_addr, int listen_port, struct passwd *pass, gid_t gid)
+static int serve(struct string_list *listen_addr, int listen_port, struct passwd *pass, gid_t gid)
 {
        struct socketlist socklist = { NULL, 0, 0 };
 
        socksetup(listen_addr, listen_port, &socklist);
        if (socklist.nr == 0)
-               die("unable to allocate any listen sockets on host %s port %u",
-                   listen_addr, listen_port);
+               die("unable to allocate any listen sockets on port %u",
+                   listen_port);
 
        if (pass && gid &&
            (initgroups(pass->pw_name, gid) || setgid (gid) ||
@@ -979,7 +992,7 @@ static int serve(char *listen_addr, int listen_port, struct passwd *pass, gid_t
 int main(int argc, char **argv)
 {
        int listen_port = 0;
-       char *listen_addr = NULL;
+       struct string_list listen_addr = STRING_LIST_INIT_NODUP;
        int inetd_mode = 0;
        const char *pid_file = NULL, *user_name = NULL, *group_name = NULL;
        int detach = 0;
@@ -994,7 +1007,7 @@ int main(int argc, char **argv)
                char *arg = argv[i];
 
                if (!prefixcmp(arg, "--listen=")) {
-                       listen_addr = xstrdup_tolower(arg + 9);
+                       string_list_append(&listen_addr, xstrdup_tolower(arg + 9));
                        continue;
                }
                if (!prefixcmp(arg, "--port=")) {
@@ -1119,7 +1132,7 @@ int main(int argc, char **argv)
        if (inetd_mode && (group_name || user_name))
                die("--user and --group are incompatible with --inetd");
 
-       if (inetd_mode && (listen_port || listen_addr))
+       if (inetd_mode && (listen_port || (listen_addr.nr > 0)))
                die("--listen= and --port= are incompatible with --inetd");
        else if (listen_port == 0)
                listen_port = DEFAULT_GIT_PORT;
@@ -1174,5 +1187,5 @@ int main(int argc, char **argv)
        if (pid_file)
                store_pid(pid_file);
 
-       return serve(listen_addr, listen_port, pass, gid);
+       return serve(&listen_addr, listen_port, pass, gid);
 }