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authorZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2016-01-13 14:23:54 -0500
committerZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2016-01-18 15:09:36 -0500
commit45ea658326ad0208031a335de8e52a8a22c6bbfa (patch)
treeb16df6b79f1c76b6d39f88815e9d14a5bfb895f5 /src
parentd469dd44c4f49bafe839c6e0bceb6ce4bfe7b3fe (diff)
bus-error: verify additional error maps during installation
Go over the entries in the map and check that they make sense. Tests are added. In the future we might want to do additional checks, e.g. verifying that the error names are in the expected format.
Diffstat (limited to 'src')
-rw-r--r--src/libsystemd/sd-bus/bus-error.c18
-rw-r--r--src/libsystemd/sd-bus/test-bus-error.c13
2 files changed, 23 insertions, 8 deletions
diff --git a/src/libsystemd/sd-bus/bus-error.c b/src/libsystemd/sd-bus/bus-error.c
index a99d55c47a..c77eb5fd03 100644
--- a/src/libsystemd/sd-bus/bus-error.c
+++ b/src/libsystemd/sd-bus/bus-error.c
@@ -579,27 +579,29 @@ const char *bus_error_message(const sd_bus_error *e, int error) {
return strerror(error);
}
+static bool map_ok(const sd_bus_error_map *map) {
+ for (; map->code != BUS_ERROR_MAP_END_MARKER; map++)
+ if (!map->name || map->code <=0)
+ return false;
+ return true;
+}
+
_public_ int sd_bus_error_add_map(const sd_bus_error_map *map) {
const sd_bus_error_map **maps = NULL;
unsigned n = 0;
assert_return(map, -EINVAL);
+ assert_return(map_ok(map), -EINVAL);
- if (additional_error_maps) {
- for (;; n++) {
- if (additional_error_maps[n] == NULL)
- break;
-
+ if (additional_error_maps)
+ for (; additional_error_maps[n] != NULL; n++)
if (additional_error_maps[n] == map)
return 0;
- }
- }
maps = realloc_multiply(additional_error_maps, sizeof(struct sd_bus_error_map*), n + 2);
if (!maps)
return -ENOMEM;
-
maps[n] = map;
maps[n+1] = NULL;
diff --git a/src/libsystemd/sd-bus/test-bus-error.c b/src/libsystemd/sd-bus/test-bus-error.c
index c52405463e..786b6d5b0f 100644
--- a/src/libsystemd/sd-bus/test-bus-error.c
+++ b/src/libsystemd/sd-bus/test-bus-error.c
@@ -167,6 +167,16 @@ static const sd_bus_error_map test_errors4[] = {
SD_BUS_ERROR_MAP_END
};
+static const sd_bus_error_map test_errors_bad1[] = {
+ SD_BUS_ERROR_MAP("org.freedesktop.custom-dbus-error-1", 0),
+ SD_BUS_ERROR_MAP_END
+};
+
+static const sd_bus_error_map test_errors_bad2[] = {
+ SD_BUS_ERROR_MAP("org.freedesktop.custom-dbus-error-1", -1),
+ SD_BUS_ERROR_MAP_END
+};
+
static void test_errno_mapping_custom(void) {
assert_se(sd_bus_error_set(NULL, "org.freedesktop.custom-dbus-error", NULL) == -5);
assert_se(sd_bus_error_set(NULL, "org.freedesktop.custom-dbus-error-2", NULL) == -52);
@@ -190,6 +200,9 @@ static void test_errno_mapping_custom(void) {
assert_se(sd_bus_error_set(NULL, "org.freedesktop.custom-dbus-error-y", NULL) == -EIO);
assert_se(sd_bus_error_set(NULL, BUS_ERROR_NO_SUCH_UNIT, NULL) == -ENOENT);
+
+ assert_se(sd_bus_error_add_map(test_errors_bad1) == -EINVAL);
+ assert_se(sd_bus_error_add_map(test_errors_bad2) == -EINVAL);
}
int main(int argc, char *argv[]) {