sms: Implement encoding the address as alphanumeric type
The number of digits is the number of used octets times two (two
digits per octet). The result has been successfully dissected by
wireshark. It has not been tested with real phones.
diff --git a/src/gsm/gsm0411_utils.c b/src/gsm/gsm0411_utils.c
index fe69bf4..a8ba810 100644
--- a/src/gsm/gsm0411_utils.c
+++ b/src/gsm/gsm0411_utils.c
@@ -4,7 +4,7 @@
/* (C) 2008 by Daniel Willmann <daniel@totalueberwachung.de>
* (C) 2009 by Harald Welte <laforge@gnumonks.org>
- * (C) 2010 by Holger Hans Peter Freyther <zecke@selfish.org>
+ * (C) 2010-2013 by Holger Hans Peter Freyther <zecke@selfish.org>
* (C) 2010 by On-Waves
* (C) 2011 by Andreas Eversberg <jolly@eversberg.eu>
*
@@ -33,6 +33,8 @@
#include <osmocom/core/logging.h>
#include <osmocom/gsm/gsm48.h>
+#include <osmocom/gsm/gsm_utils.h>
+#include <osmocom/gsm/protocol/gsm_03_40.h>
#include <osmocom/gsm/protocol/gsm_04_11.h>
#define GSM411_ALLOC_SIZE 1024
@@ -269,16 +271,26 @@
{
int len_in_bytes;
- /* prevent buffer overflows */
- if (strlen(number) > 20)
- number = "";
-
oa[1] = 0x80 | (type << 4) | plan;
- len_in_bytes = gsm48_encode_bcd_number(oa, oa_len, 1, number);
-
- /* GSM 03.40 tells us the length is in 'useful semi-octets' */
- oa[0] = strlen(number) & 0xff;
+ if (type == GSM340_TYPE_ALPHA_NUMERIC) {
+ /*
+ * TODO/FIXME: what is the 'useful semi-octets' excluding any
+ * semi octet containing only fill bits.
+ * The current code picks the number of bytes written by the
+ * 7bit encoding routines and multiplies it by two.
+ */
+ gsm_7bit_encode_n(&oa[2], oa_len - 2, number, &len_in_bytes);
+ oa[0] = len_in_bytes * 2;
+ len_in_bytes += 2;
+ } else {
+ /* prevent buffer overflows */
+ if (strlen(number) > 20)
+ number = "";
+ len_in_bytes = gsm48_encode_bcd_number(oa, oa_len, 1, number);
+ /* GSM 03.40 tells us the length is in 'useful semi-octets' */
+ oa[0] = strlen(number) & 0xff;
+ }
return len_in_bytes;
}