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X-OriginatorOrg: axis.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Dec 2023 09:09:31.3607 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 68770163-0d80-4537-2651-08dbf7043928 X-MS-Exchange-CrossTenant-Id: 78703d3c-b907-432f-b066-88f7af9ca3af X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=78703d3c-b907-432f-b066-88f7af9ca3af;Ip=[195.60.68.100];Helo=[mail.axis.com] X-MS-Exchange-CrossTenant-AuthSource: AM4PEPF00025F97.EURPRD83.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: AS8PR02MB9625 When advertisement monitoring, manufacturer data and service data was not being matched against. This made it so that advertisement monitoring with or_patterns did not work that type of data. We must start matching against the data in the manufacturer_data and service_data queues. Run a different match-function depending on the type of monitor that is being matched against. Closes: https://github.com/bluez/bluez/issues/652 --- v1->v2: Pattern match using queue_find() instead of queue_foreach() so that iterations stop when a match is found. Shorten the name of the match functions src/shared/ad.c | 115 +++++++++++++++++++++++++++++++++++++++++++----- 1 file changed, 105 insertions(+), 10 deletions(-) diff --git a/src/shared/ad.c b/src/shared/ad.c index 951c56c60..2d6fc628e 100644 --- a/src/shared/ad.c +++ b/src/shared/ad.c @@ -1324,36 +1324,110 @@ struct bt_ad_pattern *bt_ad_pattern_new(uint8_t type, size_t offset, size_t len, return pattern; } -static void pattern_ad_data_match(void *data, void *user_data) +static bool match_manufacturer(const void *data, const void *user_data) { - struct bt_ad_data *ad_data = data; - struct pattern_match_info *info = user_data; - struct bt_ad_pattern *pattern; + const struct bt_ad_manufacturer_data *manufacturer_data = data; + const struct pattern_match_info *info = user_data; + const struct bt_ad_pattern *pattern; + uint8_t all_data[BT_AD_MAX_DATA_LEN]; + + if (!manufacturer_data || !info) + return false; + + if (info->matched_pattern) + return false; + + pattern = info->current_pattern; + + if (!pattern || pattern->type != BT_AD_MANUFACTURER_DATA) + return false; + + /* Take the manufacturer ID into account */ + if (manufacturer_data->len + 2 < pattern->offset + pattern->len) + return false; + + memcpy(&all_data[0], &manufacturer_data->manufacturer_id, 2); + memcpy(&all_data[2], manufacturer_data->data, manufacturer_data->len); + + if (!memcmp(all_data + pattern->offset, pattern->data, + pattern->len)) { + return true; + } + + return false; +} + +static bool match_service(const void *data, const void *user_data) +{ + const struct bt_ad_service_data *service_data = data; + const struct pattern_match_info *info = user_data; + const struct bt_ad_pattern *pattern; + + if (!service_data || !info) + return false; + + if (info->matched_pattern) + return false; + + pattern = info->current_pattern; + + if (!pattern) + return false; + + switch (pattern->type) { + case BT_AD_SERVICE_DATA16: + case BT_AD_SERVICE_DATA32: + case BT_AD_SERVICE_DATA128: + break; + default: + return false; + } + + if (service_data->len < pattern->offset + pattern->len) + return false; + + if (!memcmp(service_data->data + pattern->offset, pattern->data, + pattern->len)) { + return true; + } + + return false; +} + +static bool match_ad_data(const void *data, const void *user_data) +{ + const struct bt_ad_data *ad_data = data; + const struct pattern_match_info *info = user_data; + const struct bt_ad_pattern *pattern; if (!ad_data || !info) - return; + return false; if (info->matched_pattern) - return; + return false; pattern = info->current_pattern; if (!pattern || ad_data->type != pattern->type) - return; + return false; if (ad_data->len < pattern->offset + pattern->len) - return; + return false; if (!memcmp(ad_data->data + pattern->offset, pattern->data, pattern->len)) { - info->matched_pattern = pattern; + return true; } + + return false; } static void pattern_match(void *data, void *user_data) { struct bt_ad_pattern *pattern = data; struct pattern_match_info *info = user_data; + struct bt_ad *ad; + void *matched = NULL; if (!pattern || !info) return; @@ -1362,8 +1436,29 @@ static void pattern_match(void *data, void *user_data) return; info->current_pattern = pattern; + ad = info->ad; + + if (!ad) + return; + + switch (pattern->type) { + case BT_AD_MANUFACTURER_DATA: + matched = queue_find(ad->manufacturer_data, match_manufacturer, + user_data); + break; + case BT_AD_SERVICE_DATA16: + case BT_AD_SERVICE_DATA32: + case BT_AD_SERVICE_DATA128: + matched = queue_find(ad->service_data, match_service, + user_data); + break; + default: + matched = queue_find(ad->data, match_ad_data, user_data); + break; + } - bt_ad_foreach_data(info->ad, pattern_ad_data_match, info); + if (matched) + info->matched_pattern = info->current_pattern; } struct bt_ad_pattern *bt_ad_pattern_match(struct bt_ad *ad, -- 2.39.2