bus-proxyd: improve compatibility with dbus-1

[elogind.git] / src / bus-proxyd / bus-proxyd.c

diff --git a/src/bus-proxyd/bus-proxyd.c b/src/bus-proxyd/bus-proxyd.c
index d8d989b9b080add82f57434c603a87f532ba35bf..1bd7feed7a4ad7b2bc323fe0022cc34b0953ac8e 100644 (file)
--- a/src/bus-proxyd/bus-proxyd.c
+++ b/src/bus-proxyd/bus-proxyd.c
@@ -40,7 +40,6 @@
 #include "bus-internal.h"
 #include "bus-message.h"
 #include "bus-util.h"
-#include "bus-internal.h"
 #include "build.h"
 #include "strv.h"
 #include "def.h"
@@ -239,7 +238,7 @@ static int rename_service(sd_bus *a, sd_bus *b) {
                   pid, p,
                   uid, name,
                   a->unique_name);
-                ;
+
         return 0;
 }
 
@@ -373,6 +372,8 @@ static int synthetic_reply_method_error(sd_bus_message *call, const sd_bus_error
         _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
         int r;
 
+        assert(call);
+
         if (call->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED)
                 return 0;
 
@@ -387,6 +388,8 @@ static int synthetic_reply_method_errno(sd_bus_message *call, int error, const s
 
         _cleanup_bus_error_free_ sd_bus_error berror = SD_BUS_ERROR_NULL;
 
+        assert(call);
+
         if (call->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED)
                 return 0;
 
@@ -402,6 +405,8 @@ static int synthetic_reply_method_return(sd_bus_message *call, const char *types
         _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
         int r;
 
+        assert(call);
+
         if (call->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED)
                 return 0;
 
@@ -426,6 +431,8 @@ static int synthetic_reply_return_strv(sd_bus_message *call, char **l) {
         _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
         int r;
 
+        assert(call);
+
         r = sd_bus_message_new_method_return(call, &m);
         if (r < 0)
                 return synthetic_reply_method_errno(call, r, NULL);
@@ -636,27 +643,57 @@ static int process_driver(sd_bus *a, sd_bus *b, sd_bus_message *m) {
                 return synthetic_reply_method_return(m, NULL);
 
         } else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus", "GetConnectionSELinuxSecurityContext")) {
+                const char *name;
                 _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
+                _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+
+                r = sd_bus_message_read(m, "s", &name);
+                if (r < 0)
+                        return r;
 
-                r = get_creds_by_message(a, m, SD_BUS_CREDS_SELINUX_CONTEXT, &creds, NULL);
+                r = get_creds_by_name(a, name, SD_BUS_CREDS_SELINUX_CONTEXT, &creds, NULL);
+                if (r == -ESRCH || r == -ENXIO) {
+                        sd_bus_error_setf(&error, SD_BUS_ERROR_NAME_HAS_NO_OWNER, "Could not get security context of name '%s': no such name.", name);
+                        return synthetic_reply_method_errno(m, r, &error);
+                }
                 if (r < 0)
                         return synthetic_reply_method_errno(m, r, NULL);
 
                 return synthetic_reply_method_return(m, "y", creds->label, strlen(creds->label));
 
         } else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus", "GetConnectionUnixProcessID")) {
+                const char *name;
                 _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
+                _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
 
-                r = get_creds_by_message(a, m, SD_BUS_CREDS_PID, &creds, NULL);
+                r = sd_bus_message_read(m, "s", &name);
+                if (r < 0)
+                        return r;
+
+                r = get_creds_by_name(a, name, SD_BUS_CREDS_PID, &creds, NULL);
+                if (r == -ESRCH || r == -ENXIO) {
+                        sd_bus_error_setf(&error, SD_BUS_ERROR_NAME_HAS_NO_OWNER, "Could not get PID of name '%s': no such name.", name);
+                        return synthetic_reply_method_errno(m, r, &error);
+                }
                 if (r < 0)
                         return synthetic_reply_method_errno(m, r, NULL);
 
                 return synthetic_reply_method_return(m, "u", (uint32_t) creds->pid);
 
         } else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus", "GetConnectionUnixUser")) {
+                const char *name;
                 _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
+                _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
 
-                r = get_creds_by_message(a, m, SD_BUS_CREDS_UID, &creds, NULL);
+                r = sd_bus_message_read(m, "s", &name);
+                if (r < 0)
+                        return r;
+
+                r = get_creds_by_name(a, name, SD_BUS_CREDS_UID, &creds, NULL);
+                if (r == -ESRCH || r == -ENXIO) {
+                        sd_bus_error_setf(&error, SD_BUS_ERROR_NAME_HAS_NO_OWNER, "Could not get UID of name '%s': no such name.", name);
+                        return synthetic_reply_method_errno(m, r, &error);
+                }
                 if (r < 0)
                         return synthetic_reply_method_errno(m, r, NULL);
 
@@ -723,8 +760,10 @@ static int process_driver(sd_bus *a, sd_bus *b, sd_bus_message *m) {
         } else if (sd_bus_message_is_method_call(m, "org.freedesktop.DBus", "ListQueuedOwners")) {
                 struct kdbus_cmd_name_list cmd = {};
                 struct kdbus_name_list *name_list;
+                struct kdbus_cmd_free cmd_free;
                 struct kdbus_cmd_name *name;
                 _cleanup_strv_free_ char **owners = NULL;
+                _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
                 char *arg0;
                 int err = 0;
 
@@ -735,6 +774,14 @@ static int process_driver(sd_bus *a, sd_bus *b, sd_bus_message *m) {
                 if (!service_name_is_valid(arg0))
                         return synthetic_reply_method_errno(m, -EINVAL, NULL);
 
+                r = sd_bus_get_owner(a, arg0, 0, NULL);
+                if (r == -ESRCH || r == -ENXIO) {
+                        sd_bus_error_setf(&error, SD_BUS_ERROR_NAME_HAS_NO_OWNER, "Could not get owners of name '%s': no such name.", arg0);
+                        return synthetic_reply_method_errno(m, r, &error);
+                }
+                if (r < 0)
+                        return synthetic_reply_method_errno(m, r, NULL);
+
                 cmd.flags = KDBUS_NAME_LIST_QUEUED;
                 r = ioctl(a->input_fd, KDBUS_CMD_NAME_LIST, &cmd);
                 if (r < 0)
@@ -743,12 +790,15 @@ static int process_driver(sd_bus *a, sd_bus *b, sd_bus_message *m) {
                 name_list = (struct kdbus_name_list *) ((uint8_t *) a->kdbus_buffer + cmd.offset);
 
                 KDBUS_ITEM_FOREACH(name, name_list, names) {
+                        const char *entry_name = NULL;
+                        struct kdbus_item *item;
                         char *n;
 
-                        if (name->size <= sizeof(*name))
-                                continue;
+                        KDBUS_ITEM_FOREACH(item, name, items)
+                                if (item->type == KDBUS_ITEM_NAME)
+                                        entry_name = item->str;
 
-                        if (!streq(name->name, arg0))
+                        if (!streq_ptr(entry_name, arg0))
                                 continue;
 
                         if (asprintf(&n, ":1.%llu", (unsigned long long) name->owner_id) < 0) {
@@ -763,7 +813,10 @@ static int process_driver(sd_bus *a, sd_bus *b, sd_bus_message *m) {
                         }
                 }
 
-                r = ioctl(a->input_fd, KDBUS_CMD_FREE, &cmd.offset);
+                cmd_free.flags = 0;
+                cmd_free.offset = cmd.offset;
+
+                r = ioctl(a->input_fd, KDBUS_CMD_FREE, &cmd_free);
                 if (r < 0)
                         return synthetic_reply_method_errno(m, r, NULL);
 
@@ -1132,8 +1185,13 @@ int main(int argc, char *argv[]) {
                 sd_is_socket(out_fd, AF_UNIX, 0, 0) > 0;
 
         if (is_unix) {
-                getpeercred(in_fd, &ucred);
-                getpeersec(in_fd, &peersec);
+                r = getpeercred(in_fd, &ucred);
+                if (r < 0) {
+                        log_error("Failed to get peer creds: %s", strerror(-r));
+                        goto finish;
+                }
+
+                (void) getpeersec(in_fd, &peersec);
         }
 
         if (arg_drop_privileges) {
@@ -1474,6 +1532,10 @@ int main(int argc, char *argv[]) {
         }
 
 finish:
+        sd_notify(false,
+                  "STOPPING=1\n"
+                  "STATUS=Shutting down.");
+
         policy_free(&policy);
         strv_free(arg_configuration);
         free(arg_address);