1 files changed, 21 insertions, 0 deletions
diff --git a/scan_asn1oid.c b/scan_asn1oid.c
new file mode 100644
index 0000000..b5abf52
--- /dev/null
+++ b/scan_asn1oid.c
@@ -0,0 +1,21 @@
+#include "asn1.h"
+
+size_t scan_asn1oid(const char* src,const char* max,size_t* array,size_t* arraylen) {
+  size_t res,tlen;
+  unsigned long tag,tmp;
+  enum asn1_tagclass tc;
+  enum asn1_tagtype tt;
+  if (!arraylen) return 0;
+  if (!(res=scan_asn1tag(src,max,&tc,&tt,&tag)) ||
+      (tc!=UNIVERSAL || tt!=PRIMITIVE || tag!=OBJECT_IDENTIFIER) ||
+      !(tmp=scan_asn1length(src+res,max,&tlen)) || tlen<1) {
+    *arraylen=0;
+    return 0;
+  }
+  res+=tmp;
+  if (max>src+res+tlen) max=src+res+tlen;	/* clamp max down */
+  src+=res;
+
+  return scan_asn1rawoid(src,max,array,arraylen);
+}
+