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authorHolger Hans Peter Freyther <zecke@selfish.org>2013-05-02 22:37:16 +0200
committerHolger Hans Peter Freyther <holger@moiji-mobile.com>2013-09-04 10:41:07 +0200
commit4d7e49bc0a094c27352f43cad0a8556a9bd3befa (patch)
tree3fd99823c8ea055b28910bc236bcb58b20d5594c
parentc4cc924074bff7e560380851d92782b255083075 (diff)
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.
-rw-r--r--include/Makefile.am1
-rw-r--r--include/osmocom/gsm/protocol/gsm_03_40.h32
-rw-r--r--src/gsm/gsm0411_utils.c30
-rw-r--r--tests/sms/sms_test.c44
-rw-r--r--tests/sms/sms_test.ok6
5 files changed, 103 insertions, 10 deletions
diff --git a/include/Makefile.am b/include/Makefile.am
index b1a818d..42a2dc2 100644
--- a/include/Makefile.am
+++ b/include/Makefile.am
@@ -59,6 +59,7 @@ nobase_include_HEADERS = \
osmocom/gsm/mncc.h \
osmocom/gsm/prim.h \
osmocom/gsm/l1sap.h \
+ osmocom/gsm/protocol/gsm_03_40.h \
osmocom/gsm/protocol/gsm_03_41.h \
osmocom/gsm/protocol/gsm_04_08.h \
osmocom/gsm/protocol/gsm_04_11.h \
diff --git a/include/osmocom/gsm/protocol/gsm_03_40.h b/include/osmocom/gsm/protocol/gsm_03_40.h
new file mode 100644
index 0000000..32d5c2c
--- /dev/null
+++ b/include/osmocom/gsm/protocol/gsm_03_40.h
@@ -0,0 +1,32 @@
+#pragma once
+
+/* GSM TS 03.40 */
+
+/**
+ * 9.1.2.5 Type Of Number
+ */
+enum {
+ GSM340_TYPE_UNKNOWN = 0,
+ GSM340_TYPE_INTERNATIONAL = 1,
+ GSM340_TYPE_NATIONAL = 2,
+ GSM340_TYPE_NETWORK = 3,
+ GSM340_TYPE_SUBSCRIBER = 4,
+ GSM340_TYPE_ALPHA_NUMERIC = 5,
+ GSM340_TYPE_ABBREVIATED = 6,
+ GSM340_TYPE_RESERVED = 7,
+};
+
+/**
+ * 9.1.2.5 Type of Numbering plan.
+ * Applies for numbering plans (Unknown, International, National)
+ */
+enum {
+ GSM340_PLAN_UNKNOWN = 0,
+ GSM340_PLAN_ISDN = 1,
+ GSM340_PLAN_DATA = 3,
+ GSM340_PLAN_TELEX = 4,
+ GSM340_PLAN_NATIONAL = 8,
+ GSM340_PLAN_PRIVATE = 9,
+ GSM340_PLAN_ERMES = 10,
+ GSM340_PLAN_RESERVED = 15,
+};
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 gsm340_gen_oa(uint8_t *oa, unsigned int oa_len, uint8_t type,
{
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;
}
diff --git a/tests/sms/sms_test.c b/tests/sms/sms_test.c
index 3188a18..a79d454 100644
--- a/tests/sms/sms_test.c
+++ b/tests/sms/sms_test.c
@@ -22,8 +22,13 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#include <osmocom/core/msgb.h>
+
+#include <osmocom/gsm/protocol/gsm_03_40.h>
+
#include <osmocom/gsm/gsm_utils.h>
+#include <osmocom/gsm/gsm0411_utils.h>
+
+#include <osmocom/core/msgb.h>
#include <osmocom/core/utils.h>
struct test_case {
@@ -222,6 +227,42 @@ static void test_octet_return()
printf("Done\n");
}
+static void test_gen_oa(void)
+{
+ uint8_t oa[12];
+ int len;
+
+ printf("Testing gsm340_gen_oa\n");
+
+ /* first try... */
+ len = gsm340_gen_oa(oa, ARRAY_SIZE(oa), GSM340_TYPE_UNKNOWN,
+ GSM340_PLAN_ISDN, "12345678901234567891");
+ OSMO_ASSERT(len == 12);
+ printf("Result: len(%d) data(%s)\n", len, osmo_hexdump(oa, len));
+ len = gsm340_gen_oa(oa, ARRAY_SIZE(oa), GSM340_TYPE_NATIONAL,
+ GSM340_PLAN_ISDN, "12345678901234567891");
+ OSMO_ASSERT(len == 12);
+ printf("Result: len(%d) data(%s)\n", len, osmo_hexdump(oa, len));
+
+ /* long input.. will fail and just prints the header*/
+ len = gsm340_gen_oa(oa, ARRAY_SIZE(oa), GSM340_TYPE_INTERNATIONAL,
+ GSM340_PLAN_ISDN, "123456789123456789120");
+ OSMO_ASSERT(len == 2);
+ printf("Result: len(%d) data(%s)\n", len, osmo_hexdump(oa, len));
+
+ /* try the alpha numeric encoding */
+ len = gsm340_gen_oa(oa, ARRAY_SIZE(oa), GSM340_TYPE_ALPHA_NUMERIC,
+ GSM340_PLAN_UNKNOWN, "OpenBSC");
+ OSMO_ASSERT(len == 9);
+ printf("Result: len(%d) data(%s)\n", len, osmo_hexdump(oa, len));
+
+ /* long alpha numeric text */
+ len = gsm340_gen_oa(oa, ARRAY_SIZE(oa), GSM340_TYPE_ALPHA_NUMERIC,
+ GSM340_PLAN_UNKNOWN, "OpenBSCabcdefghijklm");
+ OSMO_ASSERT(len == 12);
+ printf("Result: len(%d) data(%s)\n", len, osmo_hexdump(oa, len));
+}
+
int main(int argc, char** argv)
{
printf("SMS testing\n");
@@ -344,6 +385,7 @@ int main(int argc, char** argv)
}
test_octet_return();
+ test_gen_oa();
printf("OK\n");
return 0;
diff --git a/tests/sms/sms_test.ok b/tests/sms/sms_test.ok
index 915a59c..a71567d 100644
--- a/tests/sms/sms_test.ok
+++ b/tests/sms/sms_test.ok
@@ -12,4 +12,10 @@ Decode case 5: return value 40 (expected 40)
Encoding some tests and printing number of septets/octets
SEPTETS: 8 OCTETS: 7
Done
+Testing gsm340_gen_oa
+Result: len(12) data(14 81 21 43 65 87 09 21 43 65 87 19 )
+Result: len(12) data(14 a1 21 43 65 87 09 21 43 65 87 19 )
+Result: len(2) data(00 91 )
+Result: len(9) data(0e d0 4f 78 d9 2d 9c 0e 01 )
+Result: len(12) data(14 d0 4f 78 d9 2d 9c 0e c3 e2 31 19 )
OK