gsm0480: Attempt to encode a NotifySS-Arg with a username..

2 files changed, 66 insertions, 1 deletions

diff --git a/openbsc/include/openbsc/gsm_04_80.h b/openbsc/include/openbsc/gsm_04_80.h
index b5ab1c6ea..2842d8d39 100644
--- a/openbsc/include/openbsc/gsm_04_80.h
+++ b/openbsc/include/openbsc/gsm_04_80.h
@@ -19,4 +19,6 @@ int gsm0480_send_ussd_response(const struct msgb *in_msg, const char* response_t
 int gsm0480_send_ussd_reject(const struct msgb *msg, 
 				const struct ussd_request *request);
 
+struct msgb * gsm0480_create_notifySS(const char *text);
+
 #endif
diff --git a/openbsc/src/gsm_04_80.c b/openbsc/src/gsm_04_80.c
index ef10b1702..479998586 100644
--- a/openbsc/src/gsm_04_80.c
+++ b/openbsc/src/gsm_04_80.c
@@ -2,7 +2,7 @@
  * 3GPP TS 04.08 version 7.21.0 Release 1998 / ETSI TS 100 940 V7.21.0 */
 
 /* (C) 2008-2009 by Harald Welte <laforge@gnumonks.org>
- * (C) 2008, 2009 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2008, 2009, 2010 by Holger Hans Peter Freyther <zecke@selfish.org>
  * (C) 2009 by Mike Haben <michael.haben@btinternet.com>
  *
  * All Rights Reserved
@@ -244,6 +244,69 @@ static int parse_process_uss_req(u_int8_t *uss_req_data, u_int8_t length,
 	return rc;
 }
 
+struct msgb *gsm0480_create_notifySS(const char *text)
+{
+	struct msgb *msg;
+	uint8_t *data, *tmp_len;
+	uint8_t *seq_len_ptr, *cal_len_ptr, *opt_len_ptr, *nam_len_ptr;
+	int len;
+
+	len = strlen(text);
+	if (len < 1 || len > 160)
+		return NULL;
+
+	msg = gsm48_msgb_alloc();
+	if (!msg)
+		return NULL;
+
+	msgb_put_u8(msg, GSM_0480_SEQUENCE_TAG);
+	seq_len_ptr = msgb_put(msg, 1);
+
+
+	/* nameIndicator { */
+	msgb_put_u8(msg, 0xB4);
+	nam_len_ptr = msgb_put(msg, 1);
+
+	/* callingName { */
+	msgb_put_u8(msg, 0xA0);
+	opt_len_ptr = msgb_put(msg, 1);
+	msgb_put_u8(msg, 0xA0);
+	cal_len_ptr = msgb_put(msg, 1);
+
+	/* namePresentationAllowed { */
+	/* add the DCS value */
+	msgb_put_u8(msg, 0x80);
+	msgb_put_u8(msg, 1);
+	msgb_put_u8(msg, 0x0F);
+
+	/* add the lengthInCharacters */
+	msgb_put_u8(msg, 0x81);
+	msgb_put_u8(msg, 1);
+	msgb_put_u8(msg, strlen(text));
+
+	/* add the actual string */
+	msgb_put_u8(msg, 0x82);
+	tmp_len = msgb_put(msg, 1);
+	data = msgb_put(msg, 0);
+	len = gsm_7bit_encode(data, text);
+	tmp_len[0] = len;
+	msgb_put(msg, len);
+
+	/* }; namePresentationAllowed */
+
+	cal_len_ptr[0] = 3 + 3 + 2 + len;
+	opt_len_ptr[0] = cal_len_ptr[0] + 2;
+	/* }; callingName */
+
+	nam_len_ptr[0] = opt_len_ptr[0] + 2;
+	/* ); nameIndicator */
+
+	/* write the lengths... */
+	seq_len_ptr[0] = nam_len_ptr[0] + 2;
+
+	return msg;
+}
+
 /* Send response to a mobile-originated ProcessUnstructuredSS-Request */
 int gsm0480_send_ussd_response(const struct msgb *in_msg, const char *response_text,
 						const struct ussd_request *req)