Some profiles specify some restriction depending on the length
of the key used to encrypt the link, this adds an way to retrieve
that value from the kernel.
---
btio/btio.c | 19 +++++++++++++++++++
btio/btio.h | 1 +
2 files changed, 20 insertions(+), 0 deletions(-)
diff --git a/btio/btio.c b/btio/btio.c
index a45a9cc..77ddb1d 100644
--- a/btio/btio.c
+++ b/btio/btio.c
@@ -511,6 +511,21 @@ static int set_priority(int sock, uint32_t prio)
return 0;
}
+static gboolean get_key_size(int sock, int *size, GError **err)
+{
+ struct bt_security sec;
+ socklen_t len;
+
+ memset(&sec, 0, sizeof(sec));
+ len = sizeof(sec);
+ if (getsockopt(sock, SOL_BLUETOOTH, BT_SECURITY, &sec, &len) == 0) {
+ *size = sec.key_size;
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
static gboolean l2cap_set(int sock, int sec_level, uint16_t imtu,
uint16_t omtu, uint8_t mode, int master,
int flushable, uint32_t priority, GError **err)
@@ -875,6 +890,10 @@ static gboolean l2cap_get(int sock, GError **err, BtIOOption opt1,
va_arg(args, int *), err))
return FALSE;
break;
+ case BT_IO_OPT_KEY_SIZE:
+ if (!get_key_size(sock, va_arg(args, int *), err))
+ return FALSE;
+ break;
case BT_IO_OPT_PSM:
*(va_arg(args, uint16_t *)) = src.l2_psm ?
btohs(src.l2_psm) : btohs(dst.l2_psm);
diff --git a/btio/btio.h b/btio/btio.h
index ae55b61..7e3e130 100644
--- a/btio/btio.h
+++ b/btio/btio.h
@@ -52,6 +52,7 @@ typedef enum {
BT_IO_OPT_DEST_BDADDR,
BT_IO_OPT_DEFER_TIMEOUT,
BT_IO_OPT_SEC_LEVEL,
+ BT_IO_OPT_KEY_SIZE,
BT_IO_OPT_CHANNEL,
BT_IO_OPT_SOURCE_CHANNEL,
BT_IO_OPT_DEST_CHANNEL,
--
1.7.8.1
--
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