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gsm0480: Add method create own number response

This commit is contained in:
Holger Hans Peter Freyther 2010-10-18 16:56:43 +02:00
parent 1a4ea5b436
commit c64970ede5
2 changed files with 51 additions and 0 deletions
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1
include/osmocore/gsm0480.h
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@ -16,6 +16,7 @@ struct ussd_request {
int gsm0480_decode_ussd_request(const struct gsm48_hdr *hdr, uint16_t len,
struct ussd_request *request);
struct msgb *gsm0480_create_ussd_resp(uint8_t invoke_id, uint8_t trans_id, const char *text);
struct msgb *gsm0480_create_unstructuredSS_Notify(int alertPattern, const char *text);
struct msgb *gsm0480_create_notifySS(const char *text);

50
src/gsm0480.c
View File

@ -409,3 +409,53 @@ static int parse_process_uss_req(const uint8_t *uss_req_data, uint16_t length,
}
return rc;
}
struct msgb *gsm0480_create_ussd_resp(uint8_t invoke_id, uint8_t trans_id, const char *text)
{
struct msgb *msg;
struct gsm48_hdr *gh;
uint8_t *ptr8;
int response_len;
msg = msgb_alloc_headroom(1024, 128, "GSM 04.80");
if (!msg)
return NULL;
/* First put the payload text into the message */
ptr8 = msgb_put(msg, 0);
response_len = gsm_7bit_encode(ptr8, text);
msgb_put(msg, response_len);
/* Then wrap it as an Octet String */
msgb_wrap_with_TL(msg, ASN1_OCTET_STRING_TAG);
/* Pre-pend the DCS octet string */
msgb_push_TLV1(msg, ASN1_OCTET_STRING_TAG, 0x0F);
/* Then wrap these as a Sequence */
msgb_wrap_with_TL(msg, GSM_0480_SEQUENCE_TAG);
/* Pre-pend the operation code */
msgb_push_TLV1(msg, GSM0480_OPERATION_CODE,
GSM0480_OP_CODE_PROCESS_USS_REQ);
/* Wrap the operation code and IA5 string as a sequence */
msgb_wrap_with_TL(msg, GSM_0480_SEQUENCE_TAG);
/* Pre-pend the invoke ID */
msgb_push_TLV1(msg, GSM0480_COMPIDTAG_INVOKE_ID, invoke_id);
/* Wrap this up as a Return Result component */
msgb_wrap_with_TL(msg, GSM0480_CTYPE_RETURN_RESULT);
/* Wrap the component in a Facility message */
msgb_wrap_with_TL(msg, GSM0480_IE_FACILITY);
/* And finally pre-pend the L3 header */
gh = (struct gsm48_hdr *) msgb_push(msg, sizeof(*gh));
gh->proto_discr = GSM48_PDISC_NC_SS | trans_id
| (1<<7); /* TI direction = 1 */
gh->msg_type = GSM0480_MTYPE_RELEASE_COMPLETE;
return msg;
}