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add support for routing errors

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This commit is contained in:
hippoz 2023-01-16 17:44:45 +02:00
parent c397e37a05
commit edbc927b79
Signed by: hippoz
GPG key ID: 56C4E02A85F2FBED
3 changed files with 40 additions and 8 deletions
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2
Makefile
View file

@ -5,7 +5,7 @@ CFLAGS_RELEASE=-O2 -ggdb
CFLAGS+=-pipe -Wall -Wextra -Wshadow -pedantic -std=c99
CFLAGS+=$(CFLAGS_RELEASE)
CFLAGS+=$(CFLAGS_DEV)
jitterbug: util.c wire.c match.c server.c main.c
$(CC) $(CFLAGS) -o $@ $^

14
server.c
View file

@ -224,10 +224,7 @@ int bus_client_assign_own_name(bus_t *s, int i, char *name)
return -1;
}
int name_index = bus_name_add(s, name, i);
if (name_index < 0) {
return -1;
}
int name_index = TRYST(bus_name_add(s, name, i));
c->owned_name_index = name_index;
return 0;
@ -429,16 +426,19 @@ int handle_request_name(bus_t *s, int i, wire_message_t *msg, wire_context_t *ct
}
char *name = TRYPTR(wire_get_name_string(ctx));
TRYPTR(wire_get_u32(ctx)); // unused flags
uint32_t flags = *(uint32_t*)TRYPTR(wire_get_u32(ctx)); // unused flags
char *name_str = TRYPTR(string_dup(name));
int status_code = DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER;
if (bus_client_assign_own_name(s, i, name_str) < 0) {
free(name_str);
// TODO: report the actual error
status_code = DBUS_REQUEST_NAME_REPLY_EXISTS;
WARN("client '%s' (index=%d) couldn't acquire name '%s'\n", s->names[s->clients[i].owned_name_index].name, i, name_str);
free(name_str);
}
_reply_begin("u") {
@ -786,7 +786,7 @@ int bus_client_drain_messages(bus_t *s, int ci, uint8_t *data, uint32_t data_len
#define _client_die(m) do { bus_client_error(s,i,m); continue; } while(0)
int bus_turn(bus_t *s)
{
static const char agree_unix_fd[] = "AGREE_UNIX_FD\r\n";
static const char agree_unix_fd[] = "ERROR\r\n";
static const char auth_ok[] = "OK aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa\r\n";
static const char auth_list[] = "REJECTED EXTERNAL\r\n";
static const char auth_data[] = "DATA\r\n";

32
wire.c
View file

@ -125,6 +125,7 @@ int wire_parse_message(wire_context_t *c, wire_message_t *msg)
case DBUS_HEADER_FIELD_PATH: /* through */
case DBUS_HEADER_FIELD_INTERFACE: /* through */
case DBUS_HEADER_FIELD_MEMBER: /* through */
case DBUS_HEADER_FIELD_ERROR_NAME: /* through */
case DBUS_HEADER_FIELD_DESTINATION: {
char *str = TRYPTR(wire_get_string(c));
VERBOSE("field: %s\n", str);
@ -470,6 +471,37 @@ int wire_compose_unicast_reply(wire_context_t *c, wire_context_t *msg_c, wire_me
// last element, don't align
} break;
case DBUS_MESSAGE_ERROR: {
wire_message_field_t *reply_serial_field = &msg->fields[DBUS_HEADER_FIELD_REPLY_SERIAL];
wire_message_field_t *error_name_field = &msg->fields[DBUS_HEADER_FIELD_ERROR_NAME];
if (!reply_serial_field->present || !error_name_field->present) {
return -1;
}
TRYPTR(wire_set_u8(c, DBUS_HEADER_FIELD_REPLY_SERIAL));
TRYPTR(wire_set_signature(c, "u"));
TRYPTR(wire_set_u32(c, reply_serial_field->t.u32));
TRYPTR(wire_write_align(c, 8));
wire_message_field_t *signature_field = &msg->fields[DBUS_HEADER_FIELD_SIGNATURE];
if (signature_field->present) {
TRYPTR(wire_set_u8(c, DBUS_HEADER_FIELD_SIGNATURE));
TRYPTR(wire_set_signature(c, "g"));
TRYPTR(wire_set_signature(c, signature_field->t.str));
TRYPTR(wire_write_align(c, 8));
}
TRYPTR(wire_set_u8(c, DBUS_HEADER_FIELD_ERROR_NAME));
TRYPTR(wire_set_signature(c, "s"));
TRYPTR(wire_set_string(c, error_name_field->t.str));
TRYPTR(wire_write_align(c, 8));
TRYPTR(wire_set_u8(c, DBUS_HEADER_FIELD_SENDER));
TRYPTR(wire_set_signature(c, "s"));
TRYPTR(wire_set_string(c, sender_unique_name));
// last element, don't align
} break;
default: {
return -1;
} break;