test-ranap: Add test case about constrained integer range decode
There was a bug in the asn1c/libffasn1c APER patch that caused
constrained integer ranges to be decoded incorrectly. Add a test
case for that to avoid people falling into that trap...
diff --git a/src/tests/test-ranap.c b/src/tests/test-ranap.c
index 5c30edf..addc14f 100644
--- a/src/tests/test-ranap.c
+++ b/src/tests/test-ranap.c
@@ -28,6 +28,7 @@
#include <osmocom/ranap/ranap_ies_defs.h>
#include <osmocom/ranap/ranap_msg_factory.h>
#include <osmocom/ranap/RANAP_MaxBitrate.h>
+#include <osmocom/ranap/RANAP_CauseMisc.h>
#include "test_common.h"
@@ -53,6 +54,32 @@
printf("Encoded MaxBitRate %u to %s\n", mbr, osmo_hexdump(buf, rv.encoded/8));
}
+static void test_aper_causemisc(uint32_t inp, uint8_t exp_enc)
+{
+ RANAP_Cause_t c = { .present = RANAP_Cause_PR_misc, .choice.misc = inp };
+ RANAP_Cause_t *c_dec;
+ asn_enc_rval_t rv;
+ uint8_t buf[32];
+
+ memset(buf, 0, sizeof(buf));
+
+ rv = aper_encode_to_buffer(&asn_DEF_RANAP_Cause, &c, buf, sizeof(buf));
+ if (rv.encoded == -1) {
+ fprintf(stderr, "Failed\n");
+ return;
+ }
+ /* test encoding */
+ printf("Encoded Cause Misc=%u to %s\n", inp, osmo_hexdump(buf, rv.encoded/8));
+ OSMO_ASSERT(buf[0] == exp_enc);
+ OSMO_ASSERT(rv.encoded == 8);
+
+ /* test re-decoding */
+ aper_decode(NULL, &asn_DEF_RANAP_Cause, &c_dec, buf, 1, 0, 0);
+ printf("Decoded Cause Misc=%u\n", c_dec->choice.misc);
+ OSMO_ASSERT(c_dec->present == RANAP_Cause_PR_misc);
+ OSMO_ASSERT(c_dec->choice.misc == inp);
+}
+
int main(int argc, char **argv)
{
uint8_t nas_buf[] = { 0xaa, 0xbb, 0xcc };
@@ -84,6 +111,7 @@
test_aper_int(0xffff+1);
test_aper_int(0xffff+2);
test_aper_int(16000000);
+ test_aper_causemisc(RANAP_CauseMisc_unspecified_failure, 0x42);
for (i = 0; i < 1; i++) {
printf("\n==> DIRECT TRANSFER\n");