bus: rename sd_bus_get_peer() to sd_bus_get_server_id()

This function always returns the server side ID. The name suggested it
was actually always the peer's ID, but that's not correct if the call is
called on a server bus context. Hence, let's correct the name a bit.

src/libsystemd-bus/bus-internal.h

@@ -112,7 +112,7 @@ struct sd_bus {
         } sockaddr;
         socklen_t sockaddr_size;
 
-        sd_id128_t peer;
+        sd_id128_t server_id;
 
         char *address;
         unsigned address_index;

src/libsystemd-bus/bus-socket.c

@@ -146,11 +146,11 @@ static int bus_socket_auth_verify_client(sd_bus *b) {
                 peer.bytes[i/2] = ((uint8_t) x << 4 | (uint8_t) y);
         }
 
-        if (!sd_id128_equal(b->peer, SD_ID128_NULL) &&
-            !sd_id128_equal(b->peer, peer))
+        if (!sd_id128_equal(b->server_id, SD_ID128_NULL) &&
+            !sd_id128_equal(b->server_id, peer))
                 return -EPERM;
 
-        b->peer = peer;
+        b->server_id = peer;
 
         /* And possibly check the second line, too */
 
@@ -286,7 +286,7 @@ static int bus_socket_auth_write_ok(sd_bus *b) {
 
         assert(b);
 
-        snprintf(t, sizeof(t), "OK " SD_ID128_FORMAT_STR "\r\n", SD_ID128_FORMAT_VAL(b->peer));
+        snprintf(t, sizeof(t), "OK " SD_ID128_FORMAT_STR "\r\n", SD_ID128_FORMAT_VAL(b->server_id));
         char_array_0(t);
 
         return bus_socket_auth_write(b, t);

src/libsystemd-bus/sd-bus.c

@@ -200,16 +200,16 @@ int sd_bus_set_negotiate_fds(sd_bus *bus, int b) {
         return 0;
 }
 
-int sd_bus_set_server(sd_bus *bus, int b, sd_id128_t server) {
+int sd_bus_set_server(sd_bus *bus, int b, sd_id128_t server_id) {
         if (!bus)
                 return -EINVAL;
-        if (!b && !sd_id128_equal(server, SD_ID128_NULL))
+        if (!b && !sd_id128_equal(server_id, SD_ID128_NULL))
                 return -EINVAL;
         if (bus->state != BUS_UNSET)
                 return -EPERM;
 
         bus->is_server = !!b;
-        bus->peer = server;
+        bus->server_id = server_id;
         return 0;
 }
 
@@ -604,7 +604,7 @@ static void bus_reset_parsed_address(sd_bus *b) {
         free(b->exec_path);
         b->exec_path = NULL;
         b->exec_argv = NULL;
-        b->peer = SD_ID128_NULL;
+        b->server_id = SD_ID128_NULL;
 }
 
 static int bus_parse_next_address(sd_bus *b) {
@@ -664,7 +664,7 @@ static int bus_parse_next_address(sd_bus *b) {
         }
 
         if (guid) {
-                r = sd_id128_from_string(guid, &b->peer);
+                r = sd_id128_from_string(guid, &b->server_id);
                 if (r < 0)
                         return r;
         }
@@ -907,19 +907,19 @@ int sd_bus_can_send(sd_bus *bus, char type) {
         return bus_type_is_valid(type);
 }
 
-int sd_bus_get_peer(sd_bus *bus, sd_id128_t *peer) {
+int sd_bus_get_server_id(sd_bus *bus, sd_id128_t *server_id) {
         int r;
 
         if (!bus)
                 return -EINVAL;
-        if (!peer)
+        if (!server_id)
                 return -EINVAL;
 
         r = bus_ensure_running(bus);
         if (r < 0)
                 return r;
 
-        *peer = bus->peer;
+        *server_id = bus->server_id;
         return 0;
 }
 

src/libsystemd-bus/sd-bus.h

@@ -60,9 +60,9 @@ int sd_bus_set_address(sd_bus *bus, const char *address);
 int sd_bus_set_fd(sd_bus *bus, int fd);
 int sd_bus_set_exec(sd_bus *bus, const char *path, char *const argv[]);
 int sd_bus_set_bus_client(sd_bus *bus, int b);
-int sd_bus_set_negotiate_fds(sd_bus *bus, int b);
 int sd_bus_set_server(sd_bus *bus, int b, sd_id128_t server_id);
 int sd_bus_set_anonymous(sd_bus *bus, int b);
+int sd_bus_set_negotiate_fds(sd_bus *bus, int b);
 int sd_bus_start(sd_bus *ret);
 
 void sd_bus_close(sd_bus *bus);
@@ -72,7 +72,7 @@ sd_bus *sd_bus_unref(sd_bus *bus);
 
 int sd_bus_is_open(sd_bus *bus);
 int sd_bus_can_send(sd_bus *bus, char type);
-int sd_bus_get_peer(sd_bus *bus, sd_id128_t *peer);
+int sd_bus_get_server_id(sd_bus *bus, sd_id128_t *peer);
 
 int sd_bus_send(sd_bus *bus, sd_bus_message *m, uint64_t *serial);
 int sd_bus_send_with_reply(sd_bus *bus, sd_bus_message *m, sd_bus_message_handler_t callback, void *userdata, uint64_t usec, uint64_t *serial);

src/libsystemd-bus/test-bus-chat.c

@@ -85,9 +85,9 @@ static int server_init(sd_bus **_bus) {
                 goto fail;
         }
 
-        r = sd_bus_get_peer(bus, &id);
+        r = sd_bus_get_server_id(bus, &id);
         if (r < 0) {
-                log_error("Failed to get peer ID: %s", strerror(-r));
+                log_error("Failed to get server ID: %s", strerror(-r));
                 goto fail;
         }