diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/libstrongswan/bio/bio_writer.c | 15 | ||||
| -rw-r--r-- | src/libstrongswan/bio/bio_writer.h | 9 |
2 files changed, 24 insertions, 0 deletions
diff --git a/src/libstrongswan/bio/bio_writer.c b/src/libstrongswan/bio/bio_writer.c index 16a16f4bd..8576843ee 100644 --- a/src/libstrongswan/bio/bio_writer.c +++ b/src/libstrongswan/bio/bio_writer.c @@ -202,6 +202,20 @@ 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) { @@ -247,6 +261,7 @@ 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, diff --git a/src/libstrongswan/bio/bio_writer.h b/src/libstrongswan/bio/bio_writer.h index 8f84d0500..57a5c3d38 100644 --- a/src/libstrongswan/bio/bio_writer.h +++ b/src/libstrongswan/bio/bio_writer.h @@ -126,6 +126,15 @@ struct bio_writer_t { void (*wrap32)(bio_writer_t *this); /** + * Skips len bytes in the buffer before the next data is written, returns + * a chunk covering the skipped bytes. + * + * @param len number of bytes to skip + * @return chunk pointing to skipped bytes in the internal buffer + */ + chunk_t (*skip)(bio_writer_t *this, size_t len); + + /** * Get the encoded data buffer. * * @return chunk to internal buffer |