X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=socket-util.c;h=8141ab09ebcd3fa0c08d4a715c1e873f84c2b262;hb=2d02719c2bcf8b5e30228e00eaceae91946c7551;hp=0f5140ec5b9769a17d963c9e7c19a7dc271e28d6;hpb=47be870bd83fb3719dffc3ee9348a409ab762a14;p=elogind.git

diff --git a/socket-util.c b/socket-util.c
index 0f5140ec5..8141ab09e 100644
--- a/socket-util.c
+++ b/socket-util.c
@@ -27,6 +27,8 @@
 #include <arpa/inet.h>
 #include <stdio.h>
 #include <net/if.h>
+#include <sys/types.h>
+#include <sys/stat.h>
 
 #include "macro.h"
 #include "util.h"
@@ -298,7 +300,15 @@ int socket_address_print(const SocketAddress *a, char **p) {
         }
 }
 
-int socket_address_listen(const SocketAddress *a, int backlog, SocketAddressBindIPv6Only only, const char *bind_to_device, int *ret) {
+int socket_address_listen(
+                const SocketAddress *a,
+                int backlog,
+                SocketAddressBindIPv6Only only,
+                const char *bind_to_device,
+                mode_t directory_mode,
+                mode_t socket_mode,
+                int *ret) {
+
         int r, fd, one;
         assert(a);
         assert(ret);
@@ -324,7 +334,31 @@ int socket_address_listen(const SocketAddress *a, int backlog, SocketAddressBind
         if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one)) < 0)
                 goto fail;
 
-        if (bind(fd, &a->sockaddr.sa, a->size) < 0)
+        if (socket_address_family(a) == AF_UNIX && a->sockaddr.un.sun_path[0] != 0) {
+                mode_t old_mask;
+
+                /* Create parents */
+                mkdir_parents(a->sockaddr.un.sun_path, directory_mode);
+
+                /* Enforce the right access mode for the socket*/
+                old_mask = umask(~ socket_mode);
+
+                /* Include the original umask in our mask */
+                umask(~socket_mode | old_mask);
+
+                r = bind(fd, &a->sockaddr.sa, a->size);
+
+                if (r < 0 && errno == EADDRINUSE) {
+                        /* Unlink and try again */
+                        unlink(a->sockaddr.un.sun_path);
+                        r = bind(fd, &a->sockaddr.sa, a->size);
+                }
+
+                umask(old_mask);
+        } else
+                r = bind(fd, &a->sockaddr.sa, a->size);
+
+        if (r < 0)
                 goto fail;
 
         if (a->type == SOCK_STREAM)
@@ -336,6 +370,88 @@ int socket_address_listen(const SocketAddress *a, int backlog, SocketAddressBind
 
 fail:
         r = -errno;
-        close_nointr(fd);
+        close_nointr_nofail(fd);
         return r;
 }
+
+bool socket_address_can_accept(const SocketAddress *a) {
+        assert(a);
+
+        return
+                a->type == SOCK_STREAM ||
+                a->type == SOCK_SEQPACKET;
+}
+
+bool socket_address_equal(const SocketAddress *a, const SocketAddress *b) {
+        assert(a);
+        assert(b);
+
+        /* Invalid addresses are unequal to all */
+        if (socket_address_verify(a) < 0 ||
+            socket_address_verify(b) < 0)
+                return false;
+
+        if (a->type != b->type)
+                return false;
+
+        if (a->size != b->size)
+                return false;
+
+        if (socket_address_family(a) != socket_address_family(b))
+                return false;
+
+        switch (socket_address_family(a)) {
+
+        case AF_INET:
+                if (a->sockaddr.in4.sin_addr.s_addr != b->sockaddr.in4.sin_addr.s_addr)
+                        return false;
+
+                if (a->sockaddr.in4.sin_port != b->sockaddr.in4.sin_port)
+                        return false;
+
+                break;
+
+        case AF_INET6:
+                if (memcmp(&a->sockaddr.in6.sin6_addr, &b->sockaddr.in6.sin6_addr, sizeof(a->sockaddr.in6.sin6_addr)) != 0)
+                        return false;
+
+                if (a->sockaddr.in6.sin6_port != b->sockaddr.in6.sin6_port)
+                        return false;
+
+                break;
+
+        case AF_UNIX:
+
+                if ((a->sockaddr.un.sun_path[0] == 0) != (b->sockaddr.un.sun_path[0] == 0))
+                        return false;
+
+                if (a->sockaddr.un.sun_path[0]) {
+                        if (strncmp(a->sockaddr.un.sun_path, b->sockaddr.un.sun_path, sizeof(a->sockaddr.un.sun_path)) != 0)
+                                return false;
+                } else {
+                        if (memcmp(a->sockaddr.un.sun_path, b->sockaddr.un.sun_path, sizeof(a->sockaddr.un.sun_path)) != 0)
+                                return false;
+                }
+
+                break;
+
+        default:
+                /* Cannot compare, so we assume the addresses are different */
+                return false;
+        }
+
+        return true;
+}
+
+bool socket_address_is(const SocketAddress *a, const char *s) {
+        struct SocketAddress b;
+
+        assert(a);
+        assert(s);
+
+        if (socket_address_parse(&b, s) < 0)
+                return false;
+
+        return socket_address_equal(a, &b);
+
+}