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-rw-r--r--source4/libcli/util/asn1.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/source4/libcli/util/asn1.c b/source4/libcli/util/asn1.c
index 943ce4d1c1..da51340774 100644
--- a/source4/libcli/util/asn1.c
+++ b/source4/libcli/util/asn1.c
@@ -239,6 +239,28 @@ BOOL asn1_read_uint8(ASN1_DATA *data, uint8_t *v)
return asn1_read(data, v, 1);
}
+/* read from a ASN1 buffer, advancing the buffer pointer */
+BOOL asn1_peek(ASN1_DATA *data, void *p, int len)
+{
+ if (len < 0 || data->ofs + len < data->ofs || data->ofs + len < len) {
+ data->has_error = True;
+ return False;
+ }
+
+ if (data->ofs + len > data->length) {
+ data->has_error = True;
+ return False;
+ }
+ memcpy(p, data->data + data->ofs, len);
+ return True;
+}
+
+/* read a uint8_t from a ASN1 buffer */
+BOOL asn1_peek_uint8(ASN1_DATA *data, uint8_t *v)
+{
+ return asn1_peek(data, v, 1);
+}
+
/* start reading a nested asn1 structure */
BOOL asn1_start_tag(ASN1_DATA *data, uint8_t tag)
{