Initial version of slipstream DNS tunnel

include/lua-resty-base-encoding-base32.h

@@ -0,0 +1,9 @@
+#ifndef LUA_RESTY_BASE_ENCODING_BASE32_H
+#define LUA_RESTY_BASE_ENCODING_BASE32_H
+
+#include <stdint.h>
+
+size_t b32_encode(char *dest, const char *src, size_t len, uint32_t no_padding, uint32_t hex);
+size_t b32_decode(char *dest, const char *src, size_t len, uint32_t hex);
+
+#endif // LUA_RESTY_BASE_ENCODING_BASE32_H

include/slipstream.h

@@ -0,0 +1,32 @@
+#ifndef SLIPSTREAM_H
+#define SLIPSTREAM_H
+/* Header file for the picoquic sample project. 
+ * It contains the definitions common to client and server */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define SLIPSTREAM_ALPN "picoquic_sample"
+#define SLIPSTREAM_SNI "test.example.com"
+
+#define SLIPSTREAM_NO_ERROR 0
+#define SLIPSTREAM_INTERNAL_ERROR 0x101
+#define SLIPSTREAM_FILE_CANCEL_ERROR 0x105
+
+#define SLIPSTREAM_CLIENT_TICKET_STORE "sample_ticket_store.bin";
+#define SLIPSTREAM_CLIENT_TOKEN_STORE "sample_token_store.bin";
+#define SLIPSTREAM_QLOG_DIR "./qlog/";
+
+
+
+int picoquic_slipstream_client(int listen_port, char const* server_name, int server_port);
+
+int picoquic_slipstream_server(int server_port, const char* pem_cert, const char* pem_key, char const* upstream_name,
+                               int upstream_port);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

include/slipstream_inline_dots.h

@@ -0,0 +1,9 @@
+#ifndef SLIPSTREAM_INLINE_DOTS_H
+#define SLIPSTREAM_INLINE_DOTS_H
+#include <stddef.h>
+
+size_t slipstream_inline_dotify(char * __restrict__ buf, size_t buflen, size_t len);
+
+size_t slipstream_inline_undotify(char * __restrict__ buf, size_t len);
+
+#endif // SLIPSTREAM_INLINE_DOTS_H

include/slipstream_server_circular_query_buffer.h

@@ -0,0 +1,20 @@
+#ifndef SLIPSTREAM_SERVER_CIRCULAR_QUEUE_BUFFER_H
+#define SLIPSTREAM_SERVER_CIRCULAR_QUEUE_BUFFER_H
+
+#define SIZE 4096
+
+#include "SPCDNS/src/dns.h"
+
+typedef struct {
+    dns_decoded_t queries[SIZE][DNS_DECODEBUF_4K];
+    size_t tail;
+    size_t head;
+} circular_query_buffer_t;
+
+dns_decoded_t* circular_query_buffer_get_write_slot(circular_query_buffer_t* buf);
+
+dns_decoded_t* circular_query_buffer_get_read_slot(circular_query_buffer_t* buf);
+
+size_t circular_query_buffer_get_size(circular_query_buffer_t* buf);
+
+#endif // SLIPSTREAM_SERVER_CIRCULAR_QUEUE_BUFFER_H