--- /dev/null
+/*
+ * Copyright (c) 2017 Lev Walkin <vlm@lionet.info>.
+ * All rights reserved.
+ * Redistribution and modifications are permitted subject to BSD license.
+ */
+#include <asn_internal.h>
+#include <OCTET_STRING.h>
+
+int
+OCTET_STRING_print(const asn_TYPE_descriptor_t *td, const void *sptr,
+ int ilevel, asn_app_consume_bytes_f *cb, void *app_key) {
+ const char * const h2c = "0123456789ABCDEF";
+ const OCTET_STRING_t *st = (const OCTET_STRING_t *)sptr;
+ char scratch[16 * 3 + 4];
+ char *p = scratch;
+ uint8_t *buf;
+ uint8_t *end;
+ size_t i;
+
+ (void)td; /* Unused argument */
+
+ if(!st || (!st->buf && st->size))
+ return (cb("<absent>", 8, app_key) < 0) ? -1 : 0;
+
+ /*
+ * Dump the contents of the buffer in hexadecimal.
+ */
+ buf = st->buf;
+ end = (buf == NULL)? NULL : buf + st->size;
+ for(i = 0; buf < end; buf++, i++) {
+ if(!(i % 16) && (i || st->size > 16)) {
+ if(cb(scratch, p - scratch, app_key) < 0)
+ return -1;
+ _i_INDENT(1);
+ p = scratch;
+ }
+ *p++ = h2c[(*buf >> 4) & 0x0F];
+ *p++ = h2c[*buf & 0x0F];
+ *p++ = 0x20;
+ }
+
+ if(p > scratch) {
+ p--; /* Remove the tail space */
+ if(cb(scratch, p - scratch, app_key) < 0)
+ return -1;
+ }
+
+ return 0;
+}
+
+int
+OCTET_STRING_print_utf8(const asn_TYPE_descriptor_t *td, const void *sptr,
+ int ilevel, asn_app_consume_bytes_f *cb,
+ void *app_key) {
+ const OCTET_STRING_t *st = (const OCTET_STRING_t *)sptr;
+
+ (void)td; /* Unused argument */
+ (void)ilevel; /* Unused argument */
+
+ if(st && (st->buf || !st->size)) {
+ return (cb(st->buf, st->size, app_key) < 0) ? -1 : 0;
+ } else {
+ return (cb("<absent>", 8, app_key) < 0) ? -1 : 0;
+ }
+}