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-rw-r--r--src/libstrongswan/bio/bio_writer.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/src/libstrongswan/bio/bio_writer.c b/src/libstrongswan/bio/bio_writer.c
index bf373d6ac..8576843ee 100644
--- a/src/libstrongswan/bio/bio_writer.c
+++ b/src/libstrongswan/bio/bio_writer.c
@@ -1,4 +1,7 @@
/*
+ * Copyright (C) 2012 Tobias Brunner
+ * Hochschule fuer Technik Rapperswil
+ *
* Copyright (C) 2010 Martin Willi
* Copyright (C) 2010 revosec AG
*
@@ -199,12 +202,35 @@ METHOD(bio_writer_t, wrap32, void,
this->used += 4;
}
+METHOD(bio_writer_t, skip, chunk_t,
+ private_bio_writer_t *this, size_t len)
+{
+ chunk_t skipped;
+
+ while (this->used + len > this->buf.len)
+ {
+ increase(this);
+ }
+ skipped = chunk_create(this->buf.ptr + this->used, len);
+ this->used += len;
+ return skipped;
+}
+
METHOD(bio_writer_t, get_buf, chunk_t,
private_bio_writer_t *this)
{
return chunk_create(this->buf.ptr, this->used);
}
+METHOD(bio_writer_t, extract_buf, chunk_t,
+ private_bio_writer_t *this)
+{
+ chunk_t buf = get_buf(this);
+ this->buf = chunk_empty;
+ this->used = 0;
+ return buf;
+}
+
METHOD(bio_writer_t, destroy, void,
private_bio_writer_t *this)
{
@@ -235,7 +261,9 @@ bio_writer_t *bio_writer_create(u_int32_t bufsize)
.wrap16 = _wrap16,
.wrap24 = _wrap24,
.wrap32 = _wrap32,
+ .skip = _skip,
.get_buf = _get_buf,
+ .extract_buf = _extract_buf,
.destroy = _destroy,
},
.increase = bufsize ? max(bufsize, 4) : 32,