1 files changed, 51 insertions, 0 deletions
diff --git a/include/haproxy/qpack-dec.h b/include/haproxy/qpack-dec.h
new file mode 100644
index 0000000..993f450
--- /dev/null
+++ b/include/haproxy/qpack-dec.h
@@ -0,0 +1,51 @@
+/*
+ * QPACK decompressor
+ *
+ * Copyright 2021 HAProxy Technologies, Frederic Lecaille <flecaille@haproxy.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation, version 2.1
+ * exclusively.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifndef _HAPROXY_QPACK_DEC_H
+#define _HAPROXY_QPACK_DEC_H
+
+struct buffer;
+struct http_hdr;
+
+/* Internal QPACK processing errors.
+ *Nothing to see with the RFC.
+ */
+enum {
+	QPACK_ERR_NONE = 0,  /* no error */
+	QPACK_ERR_RIC,       /* cannot decode Required Insert Count prefix field */
+	QPACK_ERR_DB,        /* cannot decode Delta Base prefix field */
+	QPACK_ERR_TRUNCATED, /* truncated stream */
+	QPACK_ERR_HUFFMAN,   /* huffman decoding error */
+	QPACK_ERR_TOO_LARGE, /* decoded request/response is too large */
+};
+
+struct qpack_dec {
+	/* Insert count */
+	uint64_t ic;
+	/* Known received count */
+	uint64_t krc;
+};
+
+int qpack_decode_fs(const unsigned char *buf, uint64_t len, struct buffer *tmp,
+                    struct http_hdr *list, int list_size);
+int qpack_decode_enc(struct buffer *buf, int fin, void *ctx);
+int qpack_decode_dec(struct buffer *buf, int fin, void *ctx);
+
+#endif /* _HAPROXY_QPACK_DEC_H */