From f83664929ae0953534a454d830102dc9c69f76c6 Mon Sep 17 00:00:00 2001
From: zhanghaipeng <zhanghaipeng@espressif.com>
Date: Tue, 18 Jul 2023 15:33:23 +0800
Subject: [PATCH] fix(bt): Fix ble periodic advertising data length 0 error

- Fixed issues about data length 0 when set ext adv data,ext scan rsp data and periodic adv data
---
 .../bt/host/bluedroid/bta/dm/bta_dm_api.c     |  3 +-
 .../host/bluedroid/stack/btm/btm_ble_5_gap.c  |  2 +-
 .../bt/host/bluedroid/stack/hcic/hciblecmds.c | 46 ++++++++-----------
 3 files changed, 23 insertions(+), 28 deletions(-)

diff --git a/components/bt/host/bluedroid/bta/dm/bta_dm_api.c b/components/bt/host/bluedroid/bta/dm/bta_dm_api.c
index 7ef64a95d4..b860f33ec5 100644
--- a/components/bt/host/bluedroid/bta/dm/bta_dm_api.c
+++ b/components/bt/host/bluedroid/bta/dm/bta_dm_api.c
@@ -2853,7 +2853,7 @@ void BTA_DmBleGapConfigExtAdvDataRaw(BOOLEAN is_scan_rsp, UINT8 instance, UINT16
         p_msg->is_scan_rsp = is_scan_rsp;
         p_msg->instance = instance;
         p_msg->length = length;
-        p_msg->data = (UINT8 *)(p_msg + 1);
+        p_msg->data = length != 0 ? (UINT8 *)(p_msg + 1) : NULL;
         if (data) {
             memcpy(p_msg->data, data, length);
         }
@@ -2943,6 +2943,7 @@ void BTA_DmBleGapPeriodicAdvCfgDataRaw(UINT8 instance, UINT16 length,
         p_msg->length = length;
         p_msg->data = (UINT8 *)(p_msg + 1);
         memcpy(p_msg->data, data, length);
+        p_msg->data = length != 0 ? (UINT8 *)(p_msg + 1) : NULL;
         //start sent the msg to the bta system control moudle
         bta_sys_sendmsg(p_msg);
     } else {
diff --git a/components/bt/host/bluedroid/stack/btm/btm_ble_5_gap.c b/components/bt/host/bluedroid/stack/btm/btm_ble_5_gap.c
index fce8e63226..331657af2d 100644
--- a/components/bt/host/bluedroid/stack/btm/btm_ble_5_gap.c
+++ b/components/bt/host/bluedroid/stack/btm/btm_ble_5_gap.c
@@ -1081,7 +1081,7 @@ static tBTM_STATUS btm_ble_ext_adv_params_validate(tBTM_BLE_GAP_EXT_ADV_PARAMS *
 
 static tBTM_STATUS btm_ble_ext_adv_set_data_validate(UINT8 instance, UINT16 len, UINT8 *data)
 {
-    if (!data) {
+    if (data == NULL && len > 0) {
         BTM_TRACE_ERROR("%s, the extend adv data is NULL. line %d", __func__, __LINE__);
         return BTM_ILLEGAL_VALUE;
     }
diff --git a/components/bt/host/bluedroid/stack/hcic/hciblecmds.c b/components/bt/host/bluedroid/stack/hcic/hciblecmds.c
index f12bfb2b99..729134686e 100644
--- a/components/bt/host/bluedroid/stack/hcic/hciblecmds.c
+++ b/components/bt/host/bluedroid/stack/hcic/hciblecmds.c
@@ -1273,17 +1273,16 @@ UINT8 btsnd_hcic_ble_set_ext_adv_data(UINT8 adv_handle,
     UINT8_TO_STREAM(pp, operation);
     UINT8_TO_STREAM(pp, fragment_prefrence);
 
-    if (p_data != NULL && data_len > 0) {
-        if (data_len > HCIC_PARAM_SIZE_EXT_ADV_WRITE_DATA) {
-            data_len = HCIC_PARAM_SIZE_EXT_ADV_WRITE_DATA;
-        }
-
-        UINT8_TO_STREAM (pp, data_len);
-
-        ARRAY_TO_STREAM (pp, p_data, data_len);
-    } else {
-        return FALSE;
+    if (data_len > HCIC_PARAM_SIZE_EXT_ADV_WRITE_DATA) {
+        data_len = HCIC_PARAM_SIZE_EXT_ADV_WRITE_DATA;
     }
+
+    UINT8_TO_STREAM (pp, data_len);
+
+    if (p_data != NULL && data_len > 0){
+        ARRAY_TO_STREAM (pp, p_data, data_len);
+    }
+
     uint8_t status = btu_hcif_send_cmd_sync (LOCAL_BR_EDR_CONTROLLER_ID, p);
     return status;
 
@@ -1309,16 +1308,13 @@ UINT8 btsnd_hcic_ble_set_ext_adv_scan_rsp_data(UINT8 adv_handle,
 
     memset(pp, 0, data_len);
 
+    if (data_len > HCIC_PARAM_SIZE_EXT_ADV_WRITE_DATA) {
+        data_len = HCIC_PARAM_SIZE_EXT_ADV_WRITE_DATA;
+    }
+
+    UINT8_TO_STREAM (pp, data_len);
     if (p_data != NULL && data_len > 0) {
-        if (data_len > HCIC_PARAM_SIZE_EXT_ADV_WRITE_DATA) {
-            data_len = HCIC_PARAM_SIZE_EXT_ADV_WRITE_DATA;
-        }
-
-        UINT8_TO_STREAM (pp, data_len);
-
         ARRAY_TO_STREAM (pp, p_data, data_len);
-    } else {
-        return FALSE;
     }
 
     return btu_hcif_send_cmd_sync (LOCAL_BR_EDR_CONTROLLER_ID, p);
@@ -1455,16 +1451,14 @@ UINT8 btsnd_hcic_ble_set_periodic_adv_data(UINT8 adv_handle,
 
     //memset(pp, 0, len);
 
+    if (len > HCIC_PARAM_SIZE_WRITE_PERIODIC_ADV_DATA) {
+        len = HCIC_PARAM_SIZE_WRITE_PERIODIC_ADV_DATA;
+    }
+
+    UINT8_TO_STREAM (pp, len);
+
     if (p_data != NULL && len > 0) {
-        if (len > HCIC_PARAM_SIZE_WRITE_PERIODIC_ADV_DATA) {
-            len = HCIC_PARAM_SIZE_WRITE_PERIODIC_ADV_DATA;
-        }
-
-        UINT8_TO_STREAM (pp, len);
-
         ARRAY_TO_STREAM (pp, p_data, len);
-    } else {
-        return FALSE;
     }
 
     return btu_hcif_send_cmd_sync(LOCAL_BR_EDR_CONTROLLER_ID, p);