[PATCH v2] sdp: Prevent duplicate records registration
From: Frédéric Danis <hidden>
Date: 2012-06-20 13:18:51
Subsystem:
the rest · Maintainer:
Linus Torvalds
Check if a record with same UUID and protocol descriptor already exists before adding new record to server --- src/sdpd-service.c | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+)
diff --git a/src/sdpd-service.c b/src/sdpd-service.c
index 39e05ab..a76f8b4 100644
--- a/src/sdpd-service.c
+++ b/src/sdpd-service.c@@ -231,6 +231,46 @@ void register_device_id(void) update_db_timestamp(); } +static int sdpd_check_duplicate(sdp_record_t *rec) +{ + sdp_list_t *protos, *p; + int port = -1, psm = -1; + + if (sdp_get_access_protos(rec, &protos) == 0) { + psm = sdp_get_proto_port(protos, L2CAP_UUID); + port = sdp_get_proto_port(protos, RFCOMM_UUID); + + sdp_list_foreach(protos, (sdp_list_func_t) sdp_list_free, NULL); + sdp_list_free(protos, NULL); + } + + for (p = sdp_get_record_list(); p; p = p->next) { + sdp_record_t *tmp = p->data; + int tmp_port = -1, tmp_psm = -1; + + if (sdp_uuid_cmp(&tmp->svclass, &rec->svclass) != 0) + continue; + + if (sdp_get_access_protos(tmp, &protos) == 0) { + tmp_psm = sdp_get_proto_port(protos, L2CAP_UUID); + tmp_port = sdp_get_proto_port(protos, RFCOMM_UUID); + + sdp_list_foreach(protos, + (sdp_list_func_t) sdp_list_free, NULL); + sdp_list_free(protos, NULL); + } + + if (psm != tmp_psm || port != tmp_port) + continue; + + DBG("Record duplicate: handle 0x%05x already exists with " + "same uuid and protos", tmp->handle); + return 1; + } + + return 0; +} + int add_record_to_server(const bdaddr_t *src, sdp_record_t *rec) { sdp_data_t *data;
@@ -245,6 +285,9 @@ int add_record_to_server(const bdaddr_t *src, sdp_record_t *rec) return -EEXIST; } + if (sdpd_check_duplicate(rec)) + return -EEXIST; + DBG("Adding record with handle 0x%05x", rec->handle); sdp_record_add(src, rec);
--
1.7.9.5