Add asn1c_helpers.c file to get type/enum/choice names for printing
Change-Id: I478d09776e58c86b84e82251f46f8d778b79a04c
diff --git a/src/Makefile.am b/src/Makefile.am
index fa86556..ab77375 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -10,9 +10,10 @@
libosmo_rspro_la_LDFLAGS = $(AM_LDFLAGS) -version-info $(RSPRO_LIBVERSION)
libosmo_rspro_la_LIBADD = $(OSMOCORE_LIBS) $(OSMOGSM_LIBS) $(OSMOABIS_LIBS) \
rspro/libosmo-asn1-rspro.la
-libosmo_rspro_la_SOURCES = rspro_util.c
+libosmo_rspro_la_SOURCES = rspro_util.c asn1c_helpers.c
noinst_HEADERS = debug.h bankd.h client.h internal.h rspro_util.h slotmap.h rspro_client_fsm.h \
+ asn1c_helpers.h \
simtrace2/apdu_dispatch.h \
simtrace2/libusb_util.h \
simtrace2/simtrace2-discovery.h \
diff --git a/src/asn1c_helpers.c b/src/asn1c_helpers.c
new file mode 100644
index 0000000..ea3f5a6
--- /dev/null
+++ b/src/asn1c_helpers.c
@@ -0,0 +1,57 @@
+#include <assert.h>
+
+#include <asn_application.h>
+#include <constr_TYPE.h>
+#include <constr_CHOICE.h>
+#include <INTEGER.h>
+
+#include "asn1c_helpers.h"
+
+const char *asn_type_name(const asn_TYPE_descriptor_t *td)
+{
+ return td->name;
+}
+
+static int
+_fetch_present_idx(const void *struct_ptr, int pres_offset, int pres_size) {
+ const void *present_ptr;
+ int present;
+
+ present_ptr = ((const char *)struct_ptr) + pres_offset;
+
+ switch(pres_size) {
+ case sizeof(int): present = *(const int *)present_ptr; break;
+ case sizeof(short): present = *(const short *)present_ptr; break;
+ case sizeof(char): present = *(const char *)present_ptr; break;
+ default:
+ /* ANSI C mandates enum to be equivalent to integer */
+ assert(pres_size != sizeof(int));
+ return 0; /* If not aborted, pass back safe value */
+ }
+
+ return present;
+}
+
+const char *asn_choice_name(const asn_TYPE_descriptor_t *td, const void *sptr)
+{
+ const asn_CHOICE_specifics_t *cspec = td->specifics;
+ int present = _fetch_present_idx(sptr, cspec->pres_offset, cspec->pres_size);
+ const asn_TYPE_member_t *elm;
+
+ if (present < 0 || present >= td->elements_count)
+ return "<invalid>";
+
+ elm = &td->elements[present-1];
+ return elm->name;
+}
+
+const char *asn_enum_name(const asn_TYPE_descriptor_t *td, int data)
+{
+ const asn_INTEGER_specifics_t *ispec = td->specifics;
+
+ if (data < 0 || data >= ispec->map_count)
+ return "<invalid>";
+
+ return ispec->value2enum[data].enum_name;
+
+}
diff --git a/src/asn1c_helpers.h b/src/asn1c_helpers.h
new file mode 100644
index 0000000..8d4e676
--- /dev/null
+++ b/src/asn1c_helpers.h
@@ -0,0 +1,7 @@
+#pragma once
+
+struct asn_TYPE_descriptor_t;
+
+const char *asn_type_name(const asn_TYPE_descriptor_t *td);
+const char *asn_choice_name(const asn_TYPE_descriptor_t *td, const void *sptr);
+const char *asn_enum_name(const asn_TYPE_descriptor_t *td, int data);