1 files changed, 134 insertions, 0 deletions
diff --git a/lib/dpkg/tarfn.h b/lib/dpkg/tarfn.h
new file mode 100644
index 0000000..c03a593
--- /dev/null
+++ b/lib/dpkg/tarfn.h
@@ -0,0 +1,134 @@
+/*
+ * libdpkg - Debian packaging suite library routines
+ * tarfn.h - tar archive extraction functions
+ *
+ * Copyright © 1995 Bruce Perens
+ * Copyright © 2009-2014, 2017 Guillem Jover <guillem@debian.org>
+ *
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef LIBDPKG_TARFN_H
+#define LIBDPKG_TARFN_H
+
+#include <sys/types.h>
+
+#include <stdint.h>
+
+#include <dpkg/error.h>
+#include <dpkg/file.h>
+
+DPKG_BEGIN_DECLS
+
+/**
+ * @defgroup tar Tar archive handling
+ * @ingroup dpkg-public
+ * @{
+ */
+
+#define TARBLKSZ	512
+
+enum tar_format {
+	TAR_FORMAT_UNKNOWN,
+	TAR_FORMAT_OLD,
+	TAR_FORMAT_GNU,
+	TAR_FORMAT_USTAR,
+	TAR_FORMAT_PAX,
+};
+
+enum tar_filetype {
+	/** For compatibility with decades-old bug. */
+	TAR_FILETYPE_FILE0 = '\0',
+	TAR_FILETYPE_FILE = '0',
+	TAR_FILETYPE_HARDLINK = '1',
+	TAR_FILETYPE_SYMLINK = '2',
+	TAR_FILETYPE_CHARDEV = '3',
+	TAR_FILETYPE_BLOCKDEV = '4',
+	TAR_FILETYPE_DIR = '5',
+	TAR_FILETYPE_FIFO = '6',
+	TAR_FILETYPE_CONTIG = '7',
+	TAR_FILETYPE_GNU_LONGLINK = 'K',
+	TAR_FILETYPE_GNU_LONGNAME = 'L',
+	TAR_FILETYPE_GNU_VOLUME = 'V',
+	TAR_FILETYPE_GNU_MULTIVOL = 'M',
+	TAR_FILETYPE_GNU_DUMPDIR = 'D',
+	TAR_FILETYPE_GNU_SPARSE = 'S',
+	TAR_FILETYPE_PAX_GLOBAL = 'g',
+	TAR_FILETYPE_PAX_EXTENDED = 'x',
+	TAR_FILETYPE_SOLARIS_EXTENDED = 'X',
+	TAR_FILETYPE_SOLARIS_ACL = 'A',
+};
+
+struct tar_entry {
+	/** Tar entry format. */
+	enum tar_format format;
+	/** File type. */
+	enum tar_filetype type;
+	/** File name. */
+	char *name;
+	/** Symlink or hardlink name. */
+	char *linkname;
+	/** File size. */
+	off_t size;
+	/** Last-modified time. */
+	intmax_t mtime;
+	/** Special device for mknod(). */
+	dev_t dev;
+
+	struct file_stat stat;
+};
+
+struct tar_archive;
+
+typedef int tar_read_func(struct tar_archive *tar, char *buffer, int length);
+typedef int tar_make_func(struct tar_archive *tar, struct tar_entry *h);
+
+struct tar_operations {
+	tar_read_func *read;
+
+	tar_make_func *extract_file;
+	tar_make_func *link;
+	tar_make_func *symlink;
+	tar_make_func *mkdir;
+	tar_make_func *mknod;
+};
+
+struct tar_archive {
+	/* Global tar archive error. */
+	struct dpkg_error err;
+
+	/** Tar archive format. */
+	enum tar_format format;
+
+	/* Operation functions and context. */
+	const struct tar_operations *ops;
+	void *ctx;
+};
+
+uintmax_t
+tar_atoul(const char *s, size_t size, uintmax_t max);
+intmax_t
+tar_atosl(const char *s, size_t size, intmax_t min, intmax_t max);
+
+void
+tar_entry_update_from_system(struct tar_entry *te);
+
+int
+tar_extractor(struct tar_archive *tar);
+
+/** @} */
+
+DPKG_END_DECLS
+
+#endif