diff options
| author | Holger Hans Peter Freyther <zecke@selfish.org> | 2013-03-25 11:06:31 +0100 |
|---|---|---|
| committer | Holger Hans Peter Freyther <zecke@selfish.org> | 2013-03-25 11:16:13 +0100 |
| commit | 7916cb881d5ecfbe7406ba88ac0338554da9ac7b (patch) | |
| tree | 6b655a931cacdbee58968846dbf3f08f5d355e20 | |
| parent | 63bb41152266fb61ed10f5972b37a7dcebe8d479 (diff) | |
bss patch: Patch all slots with FR2 in the assignment request
* Patch all slots with the FR2 codec. This is the easiest way to
patch the entire message.
| -rw-r--r-- | src/bss_patch.c | 18 | ||||
| -rw-r--r-- | tests/patching/patching_test.c | 2 |
2 files changed, 13 insertions, 7 deletions
diff --git a/src/bss_patch.c b/src/bss_patch.c index c05def5..f49098f 100644 --- a/src/bss_patch.c +++ b/src/bss_patch.c @@ -40,8 +40,9 @@ static int handle_bss_dtap(struct msgb *msg, struct sccp_parse_result *sccp, int static void patch_ass_rqst(struct msgb *msg, int length) { struct tlv_parsed tp; - uint8_t *data, audio; + uint8_t *data; int len; + int i; tlv_parse(&tp, gsm0808_att_tlvdef(), msg->l3h + 1, length - 1, 0, 0); len = TLVP_LEN(&tp, GSM0808_IE_CHANNEL_TYPE); @@ -53,12 +54,17 @@ static void patch_ass_rqst(struct msgb *msg, int length) if ((data[0] & 0xf) != 0x1) return; - /* blindly assign */ + /* blindly assign FR2 on all slots */ data[1] = GSM0808_SPEECH_FULL_PREF; - audio = GSM0808_PERM_FR2; - if (len > 3) - audio |= 0x80; - data[2] = audio; + for (i = 0; i < len - 2; ++i) { + uint8_t audio = GSM0808_PERM_FR2; + + /* at the end? */ + if (i + 1 != len - 2) + audio |= 0x80; + data[2 + i] = audio; + printf("PATCHED %d\n", i); + } } static void patch_ass_cmpl(struct msgb *msg, int length) diff --git a/tests/patching/patching_test.c b/tests/patching/patching_test.c index f9fd5a4..16ba879 100644 --- a/tests/patching/patching_test.c +++ b/tests/patching/patching_test.c @@ -44,7 +44,7 @@ static const uint8_t ass_rewrite[] = { static const uint8_t ass_rewrite_patched[] = { 0x06, 0xe5, 0xe2, 0x0e, 0x00, 0x01, 0x0c, 0x00, - 0x0a, 0x01, 0x0b, 0x04, 0x01, 0x0a, 0x91, 0x25, + 0x0a, 0x01, 0x0b, 0x04, 0x01, 0x0a, 0x91, 0x11, 0x01, 0x00, 0x08 }; |