1 files changed, 65 insertions, 0 deletions
diff --git a/src/protocol/internal/buffer.h b/src/protocol/internal/buffer.h
new file mode 100644
index 0000000..971f21c
--- /dev/null
+++ b/src/protocol/internal/buffer.h
@@ -0,0 +1,65 @@
+/*
+ * buffer.h: SSH buffer
+ * Copyright (C) 2018  Iru Cai <mytbk920423@gmail.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; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * 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 BUFFER_H
+#define BUFFER_H
+
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* } */
+
+typedef struct
+{
+	uint8_t *p;
+	size_t alloc;
+	size_t offs;
+	size_t sz;
+} buffer;
+
+/* if success, return 1, otherwise return 0 */
+int buffer_init(buffer *);
+static inline void buffer_clear(buffer *b) { b->offs = b->sz = 0; }
+static inline void buffer_deinit(buffer *b) { free(b->p); }
+static inline uint8_t *buffer_data(buffer *b) { return b->p + b->offs; }
+static inline size_t buffer_len(buffer *b) { return b->sz; }
+int buffer_append(buffer *b, const uint8_t *s, size_t len);
+int buffer_append_string(buffer *b, const char *s, size_t len);
+int buffer_append_byte(buffer *b, uint8_t);
+int buffer_append_be16(buffer *b, uint16_t);
+int buffer_append_be32(buffer *b, uint32_t);
+
+/* the following functions doesn't check on buffer size */
+static inline void buffer_consume(buffer *b, size_t L)
+{
+	b->offs += L;
+	b->sz -= L;
+}
+void buffer_get(buffer *b, uint8_t *s, size_t len);
+uint32_t buffer_get_u32(buffer *b);
+uint16_t buffer_get_u16(buffer *b);
+uint8_t buffer_get_u8(buffer *b);
+#ifdef __cplusplus
+}
+#endif
+
+#endif