Merge remote-tracking branch 'remotes/android-6.0.1_r52' into HEAD

Ticket: CYNGNOS-3020

Change-Id: I0d26ff4917b8886ca5fcc54b235bdb6afe8d8925

6 files changed, 97 insertions, 3 deletions

diff --git a/btif/include/btif_api.h b/btif/include/btif_api.h
index bf9ee3f29..fc1b67afe 100644
--- a/btif/include/btif_api.h
+++ b/btif/include/btif_api.h
@@ -87,6 +87,23 @@ bt_status_t btif_shutdown_bluetooth(void);
 
 /*******************************************************************************
 **
+** Function         is_restricted_mode
+**
+** Description      Checks if BT was enabled in restriced mode. In restricted
+**                  mode, bonds that are created are marked as temporary.
+**                  These bonds persist until we leave restricted mode, at
+**                  which point they will be deleted from the config. Also
+**                  while in restricted mode, the user can access devices
+**                  that are already paired before entering restricted mode,
+**                  but they cannot remove any of these devices.
+**
+** Returns          bool
+**
+*******************************************************************************/
+bool is_restricted_mode(void);
+
+/*******************************************************************************
+**
 ** Function         btif_get_adapter_properties
 **
 ** Description      Fetches all local adapter properties
diff --git a/btif/include/btif_storage.h b/btif/include/btif_storage.h
index e4d465c9f..46e4ced94 100644
--- a/btif/include/btif_storage.h
+++ b/btif/include/btif_storage.h
@@ -325,6 +325,18 @@ BOOLEAN btif_storage_is_fixed_pin_zeros_keyboard(bt_bdaddr_t *remote_bd_addr);
 
 /*******************************************************************************
 **
+** Function         btif_storage_is_retricted_device
+**
+** Description      BTIF storage API - checks if this device is a restricted device
+**
+** Returns          TRUE  if the device is labled as restricted
+**                  FALSE otherwise
+**
+*******************************************************************************/
+BOOLEAN btif_storage_is_restricted_device(const bt_bdaddr_t *remote_bd_addr);
+
+/*******************************************************************************
+**
 ** Function         btif_storage_is_wiimote
 **
 ** Description      BTIF storage API - checks if this device is a wiimote
diff --git a/btif/src/bluetooth.c b/btif/src/bluetooth.c
index 8c8a6cb39..78c98ebc8 100644
--- a/btif/src/bluetooth.c
+++ b/btif/src/bluetooth.c
@@ -61,6 +61,7 @@
 #include "osi/include/osi.h"
 #include "stack_manager.h"
 #include "btif_config.h"
+#include "btif_storage.h"
 #include "l2cdefs.h"
 #include "l2c_api.h"
 
@@ -80,6 +81,7 @@
 ************************************************************************************/
 
 bt_callbacks_t *bt_hal_cbacks = NULL;
+bool restricted_mode = FALSE;
 
 /** Operating System specific callouts for resource management */
 bt_os_callouts_t *bt_os_callouts = NULL;
@@ -165,8 +167,10 @@ static int init(bt_callbacks_t *callbacks) {
   return BT_STATUS_SUCCESS;
 }
 
-static int enable(void) {
-  LOG_INFO("%s", __func__);
+static int enable(bool start_restricted) {
+  LOG_INFO(LOG_TAG, "%s: start restricted = %d", __func__, start_restricted);
+
+  restricted_mode = start_restricted;
 
   if (!interface_ready())
     return BT_STATUS_NOT_READY;
@@ -193,6 +197,10 @@ static void ssrcleanup(void)
     return;
 }
 
+bool is_restricted_mode() {
+  return restricted_mode;
+}
+
 static int get_adapter_properties(void)
 {
     /* sanity check */
@@ -303,6 +311,9 @@ static int cancel_bond(const bt_bdaddr_t *bd_addr)
 
 static int remove_bond(const bt_bdaddr_t *bd_addr)
 {
+    if (is_restricted_mode() && !btif_storage_is_restricted_device(bd_addr))
+        return BT_STATUS_SUCCESS;
+
     /* sanity check */
     if (interface_ready() == FALSE)
         return BT_STATUS_NOT_READY;
diff --git a/btif/src/btif_config.c b/btif/src/btif_config.c
index 39f4bbcaf..3c05812fb 100644
--- a/btif/src/btif_config.c
+++ b/btif/src/btif_config.c
@@ -28,6 +28,7 @@
 #include "osi/include/allocator.h"
 #include "btcore/include/bdaddr.h"
 #include "btif_common.h"
+#include "btif_api.h"
 #include "btif_config.h"
 #include "btif_config_transcode.h"
 #include "btif_util.h"
@@ -47,6 +48,7 @@ static const period_ms_t CONFIG_SETTLE_PERIOD_MS = 3000;
 static void timer_config_save_cb(void *data);
 static void btif_config_write(UINT16 event, char *p_param);
 static void btif_config_remove_unpaired(config_t *config);
+static void btif_config_remove_restricted(config_t *config);
 
 // TODO(zachoverflow): Move these two functions out, because they are too specific for this file
 // {grumpy-cat/no, monty-python/you-make-me-sad}
@@ -113,6 +115,10 @@ static future_t *init(void) {
 
   btif_config_remove_unpaired(config);
 
+  // Cleanup temporary pairings if we have left guest mode
+  if (!is_restricted_mode())
+    btif_config_remove_restricted(config);
+
   // TODO(sharvil): use a non-wake alarm for this once we have
   // API support for it. There's no need to wake the system to
   // write back to disk.
@@ -427,3 +433,19 @@ static void btif_config_remove_unpaired(config_t *conf) {
     snode = config_section_next(snode);
   }
 }
+
+static void btif_config_remove_restricted(config_t* config) {
+  assert(config != NULL);
+
+  pthread_mutex_lock(&lock);
+  const config_section_node_t *snode = config_section_begin(config);
+  while (snode != config_section_end(config)) {
+    const char *section = config_section_name(snode);
+    if (string_is_bdaddr(section) && config_has_key(config, section, "Restricted")) {
+        BTIF_TRACE_DEBUG("%s: Removing restricted device %s", __func__, section);
+        config_remove_section(config, section);
+    }
+    snode = config_section_next(snode);
+  }
+  pthread_mutex_unlock(&lock);
+}
diff --git a/btif/src/btif_hh.c b/btif/src/btif_hh.c
index 8188942b5..88e767a91 100644
--- a/btif/src/btif_hh.c
+++ b/btif/src/btif_hh.c
@@ -33,6 +33,8 @@
 
 #define LOG_TAG "bt_btif_hh"
 
+#include <cutils/log.h>
+
 #include "bta_api.h"
 #include "bta_hh_api.h"
 #include "btif_storage.h"
@@ -257,7 +259,12 @@ static void toggle_os_keylockstates(int fd, int changedlockstates)
 *******************************************************************************/
 static BT_HDR *create_pbuf(UINT16 len, UINT8 *data)
 {
-    BT_HDR* p_buf = GKI_getbuf((UINT16) (len + BTA_HH_MIN_OFFSET + sizeof(BT_HDR)));
+    UINT16 buflen = (UINT16) (len + BTA_HH_MIN_OFFSET + sizeof(BT_HDR));
+    if (buflen < len) {
+      android_errorWriteWithInfoLog(0x534e4554, "28672558", -1, NULL, 0);
+      return NULL;
+    }
+    BT_HDR* p_buf = GKI_getbuf(buflen);
 
     if (p_buf) {
         UINT8* pbuf_data;
diff --git a/btif/src/btif_storage.c b/btif/src/btif_storage.c
index 895631194..4dfe27625 100644
--- a/btif/src/btif_storage.c
+++ b/btif/src/btif_storage.c
@@ -833,6 +833,13 @@ bt_status_t btif_storage_add_bonded_device(bt_bdaddr_t *remote_bd_addr,
     int ret = btif_config_set_int(bdstr, "LinkKeyType", (int)key_type);
     ret &= btif_config_set_int(bdstr, "PinLength", (int)pin_length);
     ret &= btif_config_set_bin(bdstr, "LinkKey", link_key, sizeof(LINK_KEY));
+
+    if (is_restricted_mode()) {
+        BTIF_TRACE_WARNING("%s: '%s' pairing will be removed if unrestricted",
+                         __func__, bdstr);
+        btif_config_set_int(bdstr, "Restricted", 1);
+    }
+
     /* write bonded info immediately */
     btif_config_flush();
     return ret ? BT_STATUS_SUCCESS : BT_STATUS_FAIL;
@@ -1726,6 +1733,24 @@ BOOLEAN btif_storage_is_fixed_pin_zeros_keyboard(bt_bdaddr_t *remote_bd_addr)
 
 }
 
+/*******************************************************************************
+**
+** Function         btif_storage_is_restricted_device
+**
+** Description      BTIF storage API - checks if this device is a restricted device
+**
+** Returns          TRUE  if the device is labeled as restricted
+**                  FALSE otherwise
+**
+*******************************************************************************/
+BOOLEAN btif_storage_is_restricted_device(const bt_bdaddr_t *remote_bd_addr)
+{
+    bdstr_t bdstr;
+    bdaddr_to_string(remote_bd_addr, bdstr, sizeof(bdstr));
+
+    return btif_config_exist(bdstr, "Restricted");
+}
+
 static const char *wii_names[4] = {
     "Nintendo RVL-CNT-01",		/* 1st gen */
     "Nintendo RVL-CNT-01-TR",	/* 2nd gen */