diff -r 000cdd124115 -r 5f80c5d0e87f dav/tar.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dav/tar.h	Sat Oct 28 15:25:17 2017 +0200
@@ -0,0 +1,133 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright 2017 Olaf Wintermann. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *   1. Redistributions of source code must retain the above copyright
+ *      notice, this list of conditions and the following disclaimer.
+ *
+ *   2. Redistributions in binary form must reproduce the above copyright
+ *      notice, this list of conditions and the following disclaimer in the
+ *      documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef TAR_H
+#define TAR_H
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <time.h>
+#include <inttypes.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define T_ISUID 04000
+#define T_ISGID 02000
+#define T_IRUSR 00400
+#define T_IWUSR 00200
+#define T_IXUSR 00100
+#define T_IRGRP 00040
+#define T_IWGRP 00020
+#define T_IXGRP 00010
+#define T_IROTH 00004
+#define T_IWOTH 00002
+#define T_IXOTH 00001
+    
+#define TAR_TYPE_FILE '0'
+#define TAR_TYPE_DIRECTORY '5'
+    
+enum TarError {
+    TAR_OK = 0,
+    TAR_PATH_TOO_LONG,
+    TAR_FILE_TOO_LARGE,
+    TAR_CONTENT_TOO_LARGE,
+    TAR_UNFINISHED_FILE,
+    TAR_CONTENT_BROKEN,
+    TAR_ERROR
+};
+
+typedef enum TarError TarError;
+    
+typedef struct TarHeader {
+    char name[100];
+    char mode[8];
+    char uid[8];
+    char gid[8];
+    char size[12];
+    char mtime[12];
+    char chksum[8];
+    char typeflag;
+    char linkname[100];
+    char magic[6];
+    char version[2];
+    char uname[32];
+    char gname[32];
+    char devmajor[8];
+    char devminor[8];
+    char prefix[155];
+    char padding[12];
+} TarHeader;
+
+typedef struct TarOutputStream {
+    FILE     *file;
+    uint64_t cur_filesize;
+    uint64_t cur_written;
+    TarError error;
+} TarOutputStream;
+
+typedef struct TarEntry {
+    char     *path;
+    uint64_t size;
+    int      type;
+} TarEntry;
+
+typedef struct TarInputStream {
+    FILE     *file;
+    TarEntry cur_entry;
+    uint64_t cur_read;
+    TarError error;
+} TarInputStream;
+
+const char* tar_error2str(TarError error);
+    
+TarOutputStream* tar_open(FILE *f);
+int tar_add_dir(TarOutputStream *tar, char *path, uint32_t mode, time_t mtime);
+int tar_begin_file(
+    TarOutputStream *tar,
+        char *path,
+        uint32_t mode,
+        uint64_t size,
+        time_t mtime);
+size_t tar_fwrite(const void *ptr, size_t s, size_t n, TarOutputStream *stream);
+int tar_end_file(TarOutputStream *tar);
+int tar_close(TarOutputStream *tar);
+
+TarInputStream* tar_inputstream_open(FILE *f);
+TarEntry* tar_read_entry(TarInputStream *tar);
+size_t tar_fread(void *ptr, size_t s, size_t n, TarInputStream *stream);
+int tar_inputstream_close(TarInputStream *tar);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* TAR_H */
+