1 files changed, 466 insertions, 0 deletions
diff --git a/contrib/libarchive/libarchive/archive_write.c b/contrib/libarchive/libarchive/archive_write.c
new file mode 100644
index 0000000..e0d942b
--- /dev/null
+++ b/contrib/libarchive/libarchive/archive_write.c
@@ -0,0 +1,466 @@
+/*-
+ * Copyright (c) 2003-2007 Tim Kientzle
+ * 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 AUTHOR(S) ``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 AUTHOR(S) 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.
+ */
+
+#include "archive_platform.h"
+__FBSDID("$FreeBSD: head/lib/libarchive/archive_write.c 201099 2009-12-28 03:03:00Z kientzle $");
+
+/*
+ * This file contains the "essential" portions of the write API, that
+ * is, stuff that will essentially always be used by any client that
+ * actually needs to write a archive.  Optional pieces have been, as
+ * far as possible, separated out into separate files to reduce
+ * needlessly bloating statically-linked clients.
+ */
+
+#ifdef HAVE_SYS_WAIT_H
+#include <sys/wait.h>
+#endif
+#ifdef HAVE_LIMITS_H
+#include <limits.h>
+#endif
+#include <stdio.h>
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+#include <time.h>
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#include "archive.h"
+#include "archive_entry.h"
+#include "archive_private.h"
+#include "archive_write_private.h"
+
+static struct archive_vtable *archive_write_vtable(void);
+
+static int	_archive_write_close(struct archive *);
+static int	_archive_write_finish(struct archive *);
+static int	_archive_write_header(struct archive *, struct archive_entry *);
+static int	_archive_write_finish_entry(struct archive *);
+static ssize_t	_archive_write_data(struct archive *, const void *, size_t);
+
+static struct archive_vtable *
+archive_write_vtable(void)
+{
+	static struct archive_vtable av;
+	static int inited = 0;
+
+	if (!inited) {
+		av.archive_close = _archive_write_close;
+		av.archive_finish = _archive_write_finish;
+		av.archive_write_header = _archive_write_header;
+		av.archive_write_finish_entry = _archive_write_finish_entry;
+		av.archive_write_data = _archive_write_data;
+	}
+	return (&av);
+}
+
+/*
+ * Allocate, initialize and return an archive object.
+ */
+struct archive *
+archive_write_new(void)
+{
+	struct archive_write *a;
+	unsigned char *nulls;
+
+	a = (struct archive_write *)malloc(sizeof(*a));
+	if (a == NULL)
+		return (NULL);
+	memset(a, 0, sizeof(*a));
+	a->archive.magic = ARCHIVE_WRITE_MAGIC;
+	a->archive.state = ARCHIVE_STATE_NEW;
+	a->archive.vtable = archive_write_vtable();
+	/*
+	 * The value 10240 here matches the traditional tar default,
+	 * but is otherwise arbitrary.
+	 * TODO: Set the default block size from the format selected.
+	 */
+	a->bytes_per_block = 10240;
+	a->bytes_in_last_block = -1;	/* Default */
+
+	/* Initialize a block of nulls for padding purposes. */
+	a->null_length = 1024;
+	nulls = (unsigned char *)malloc(a->null_length);
+	if (nulls == NULL) {
+		free(a);
+		return (NULL);
+	}
+	memset(nulls, 0, a->null_length);
+	a->nulls = nulls;
+	/*
+	 * Set default compression, but don't set a default format.
+	 * Were we to set a default format here, we would force every
+	 * client to link in support for that format, even if they didn't
+	 * ever use it.
+	 */
+	archive_write_set_compression_none(&a->archive);
+	return (&a->archive);
+}
+
+/*
+ * Set write options for the format. Returns 0 if successful.
+ */
+int
+archive_write_set_format_options(struct archive *_a, const char *s)
+{
+	struct archive_write *a = (struct archive_write *)_a;
+	char key[64], val[64];
+	int len, r, ret = ARCHIVE_OK;
+
+	__archive_check_magic(&a->archive, ARCHIVE_WRITE_MAGIC,
+	    ARCHIVE_STATE_NEW, "archive_write_set_format_options");
+	archive_clear_error(&a->archive);
+
+	if (s == NULL || *s == '\0')
+		return (ARCHIVE_OK);
+	if (a->format_options == NULL)
+		/* This format does not support option. */
+		return (ARCHIVE_OK);
+
+	while ((len = __archive_parse_options(s, a->format_name,
+	    sizeof(key), key, sizeof(val), val)) > 0) {
+		if (val[0] == '\0')
+			r = a->format_options(a, key, NULL);
+		else
+			r = a->format_options(a, key, val);
+		if (r == ARCHIVE_FATAL)
+			return (r);
+		if (r < ARCHIVE_OK) { /* This key was not handled. */
+			archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
+			    "Unsupported option ``%s''", key);
+			ret = ARCHIVE_WARN;
+		}
+		s += len;
+	}
+	if (len < 0) {
+		archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
+		    "Malformed options string.");
+		return (ARCHIVE_WARN);
+	}
+	return (ret);
+}
+
+/*
+ * Set write options for the compressor. Returns 0 if successful.
+ */
+int
+archive_write_set_compressor_options(struct archive *_a, const char *s)
+{
+	struct archive_write *a = (struct archive_write *)_a;
+	char key[64], val[64];
+	int len, r;
+	int ret = ARCHIVE_OK;
+
+	__archive_check_magic(&a->archive, ARCHIVE_WRITE_MAGIC,
+	    ARCHIVE_STATE_NEW, "archive_write_set_compressor_options");
+	archive_clear_error(&a->archive);
+
+	if (s == NULL || *s == '\0')
+		return (ARCHIVE_OK);
+	if (a->compressor.options == NULL) {
+		archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
+		    "Unsupported option ``%s''", s);
+		/* This compressor does not support option. */
+		return (ARCHIVE_WARN);
+	}
+
+	while ((len = __archive_parse_options(s, a->archive.compression_name,
+	    sizeof(key), key, sizeof(val), val)) > 0) {
+		if (val[0] == '\0')
+			r = a->compressor.options(a, key, NULL);
+		else
+			r = a->compressor.options(a, key, val);
+		if (r == ARCHIVE_FATAL)
+			return (r);
+		if (r < ARCHIVE_OK) {
+			archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
+			    "Unsupported option ``%s''", key);
+			ret = ARCHIVE_WARN;
+		}
+		s += len;
+	}
+	if (len < 0) {
+		archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
+		    "Illegal format options.");
+		return (ARCHIVE_WARN);
+	}
+	return (ret);
+}
+
+/*
+ * Set write options for the format and the compressor. Returns 0 if successful.
+ */
+int
+archive_write_set_options(struct archive *_a, const char *s)
+{
+	int r1, r2;
+
+	r1 = archive_write_set_format_options(_a, s);
+	if (r1 < ARCHIVE_WARN)
+		return (r1);
+	r2 = archive_write_set_compressor_options(_a, s);
+	if (r2 < ARCHIVE_WARN)
+		return (r2);
+	if (r1 == ARCHIVE_WARN && r2 == ARCHIVE_WARN)
+		return (ARCHIVE_WARN);
+	return (ARCHIVE_OK);
+}
+
+/*
+ * Set the block size.  Returns 0 if successful.
+ */
+int
+archive_write_set_bytes_per_block(struct archive *_a, int bytes_per_block)
+{
+	struct archive_write *a = (struct archive_write *)_a;
+	__archive_check_magic(&a->archive, ARCHIVE_WRITE_MAGIC,
+	    ARCHIVE_STATE_NEW, "archive_write_set_bytes_per_block");
+	a->bytes_per_block = bytes_per_block;
+	return (ARCHIVE_OK);
+}
+
+/*
+ * Get the current block size.  -1 if it has never been set.
+ */
+int
+archive_write_get_bytes_per_block(struct archive *_a)
+{
+	struct archive_write *a = (struct archive_write *)_a;
+	__archive_check_magic(&a->archive, ARCHIVE_WRITE_MAGIC,
+	    ARCHIVE_STATE_ANY, "archive_write_get_bytes_per_block");
+	return (a->bytes_per_block);
+}
+
+/*
+ * Set the size for the last block.
+ * Returns 0 if successful.
+ */
+int
+archive_write_set_bytes_in_last_block(struct archive *_a, int bytes)
+{
+	struct archive_write *a = (struct archive_write *)_a;
+	__archive_check_magic(&a->archive, ARCHIVE_WRITE_MAGIC,
+	    ARCHIVE_STATE_ANY, "archive_write_set_bytes_in_last_block");
+	a->bytes_in_last_block = bytes;
+	return (ARCHIVE_OK);
+}
+
+/*
+ * Return the value set above.  -1 indicates it has not been set.
+ */
+int
+archive_write_get_bytes_in_last_block(struct archive *_a)
+{
+	struct archive_write *a = (struct archive_write *)_a;
+	__archive_check_magic(&a->archive, ARCHIVE_WRITE_MAGIC,
+	    ARCHIVE_STATE_ANY, "archive_write_get_bytes_in_last_block");
+	return (a->bytes_in_last_block);
+}
+
+
+/*
+ * dev/ino of a file to be rejected.  Used to prevent adding
+ * an archive to itself recursively.
+ */
+int
+archive_write_set_skip_file(struct archive *_a, dev_t d, ino_t i)
+{
+	struct archive_write *a = (struct archive_write *)_a;
+	__archive_check_magic(&a->archive, ARCHIVE_WRITE_MAGIC,
+	    ARCHIVE_STATE_ANY, "archive_write_set_skip_file");
+	a->skip_file_dev = d;
+	a->skip_file_ino = i;
+	return (ARCHIVE_OK);
+}
+
+
+/*
+ * Open the archive using the current settings.
+ */
+int
+archive_write_open(struct archive *_a, void *client_data,
+    archive_open_callback *opener, archive_write_callback *writer,
+    archive_close_callback *closer)
+{
+	struct archive_write *a = (struct archive_write *)_a;
+	int ret;
+
+	__archive_check_magic(&a->archive, ARCHIVE_WRITE_MAGIC,
+	    ARCHIVE_STATE_NEW, "archive_write_open");
+	archive_clear_error(&a->archive);
+	a->archive.state = ARCHIVE_STATE_HEADER;
+	a->client_data = client_data;
+	a->client_writer = writer;
+	a->client_opener = opener;
+	a->client_closer = closer;
+	ret = (a->compressor.init)(a);
+	if (a->format_init && ret == ARCHIVE_OK)
+		ret = (a->format_init)(a);
+	return (ret);
+}
+
+
+/*
+ * Close out the archive.
+ *
+ * Be careful: user might just call write_new and then write_finish.
+ * Don't assume we actually wrote anything or performed any non-trivial
+ * initialization.
+ */
+static int
+_archive_write_close(struct archive *_a)
+{
+	struct archive_write *a = (struct archive_write *)_a;
+	int r = ARCHIVE_OK, r1 = ARCHIVE_OK;
+
+	__archive_check_magic(&a->archive, ARCHIVE_WRITE_MAGIC,
+	    ARCHIVE_STATE_ANY, "archive_write_close");
+
+	/* Finish the last entry. */
+	if (a->archive.state & ARCHIVE_STATE_DATA)
+		r = ((a->format_finish_entry)(a));
+
+	/* Finish off the archive. */
+	if (a->format_finish != NULL) {
+		r1 = (a->format_finish)(a);
+		if (r1 < r)
+			r = r1;
+	}
+
+	/* Release format resources. */
+	if (a->format_destroy != NULL) {
+		r1 = (a->format_destroy)(a);
+		if (r1 < r)
+			r = r1;
+	}
+
+	/* Finish the compression and close the stream. */
+	if (a->compressor.finish != NULL) {
+		r1 = (a->compressor.finish)(a);
+		if (r1 < r)
+			r = r1;
+	}
+
+	/* Close out the client stream. */
+	if (a->client_closer != NULL) {
+		r1 = (a->client_closer)(&a->archive, a->client_data);
+		if (r1 < r)
+			r = r1;
+	}
+
+	a->archive.state = ARCHIVE_STATE_CLOSED;
+	return (r);
+}
+
+/*
+ * Destroy the archive structure.
+ */
+static int
+_archive_write_finish(struct archive *_a)
+{
+	struct archive_write *a = (struct archive_write *)_a;
+	int r = ARCHIVE_OK;
+
+	__archive_check_magic(&a->archive, ARCHIVE_WRITE_MAGIC,
+	    ARCHIVE_STATE_ANY, "archive_write_finish");
+	if (a->archive.state != ARCHIVE_STATE_CLOSED)
+		r = archive_write_close(&a->archive);
+
+	/* Release various dynamic buffers. */
+	free((void *)(uintptr_t)(const void *)a->nulls);
+	archive_string_free(&a->archive.error_string);
+	a->archive.magic = 0;
+	free(a);
+	return (r);
+}
+
+/*
+ * Write the appropriate header.
+ */
+static int
+_archive_write_header(struct archive *_a, struct archive_entry *entry)
+{
+	struct archive_write *a = (struct archive_write *)_a;
+	int ret, r2;
+
+	__archive_check_magic(&a->archive, ARCHIVE_WRITE_MAGIC,
+	    ARCHIVE_STATE_DATA | ARCHIVE_STATE_HEADER, "archive_write_header");
+	archive_clear_error(&a->archive);
+
+	/* In particular, "retry" and "fatal" get returned immediately. */
+	ret = archive_write_finish_entry(&a->archive);
+	if (ret < ARCHIVE_OK && ret != ARCHIVE_WARN)
+		return (ret);
+
+	if (a->skip_file_dev != 0 &&
+	    archive_entry_dev(entry) == a->skip_file_dev &&
+	    a->skip_file_ino != 0 &&
+	    archive_entry_ino64(entry) == a->skip_file_ino) {
+		archive_set_error(&a->archive, 0,
+		    "Can't add archive to itself");
+		return (ARCHIVE_FAILED);
+	}
+
+	/* Format and write header. */
+	r2 = ((a->format_write_header)(a, entry));
+	if (r2 < ret)
+		ret = r2;
+
+	a->archive.state = ARCHIVE_STATE_DATA;
+	return (ret);
+}
+
+static int
+_archive_write_finish_entry(struct archive *_a)
+{
+	struct archive_write *a = (struct archive_write *)_a;
+	int ret = ARCHIVE_OK;
+
+	__archive_check_magic(&a->archive, ARCHIVE_WRITE_MAGIC,
+	    ARCHIVE_STATE_HEADER | ARCHIVE_STATE_DATA,
+	    "archive_write_finish_entry");
+	if (a->archive.state & ARCHIVE_STATE_DATA)
+		ret = (a->format_finish_entry)(a);
+	a->archive.state = ARCHIVE_STATE_HEADER;
+	return (ret);
+}
+
+/*
+ * Note that the compressor is responsible for blocking.
+ */
+static ssize_t
+_archive_write_data(struct archive *_a, const void *buff, size_t s)
+{
+	struct archive_write *a = (struct archive_write *)_a;
+	__archive_check_magic(&a->archive, ARCHIVE_WRITE_MAGIC,
+	    ARCHIVE_STATE_DATA, "archive_write_data");
+	archive_clear_error(&a->archive);
+	return ((a->format_write_data)(a, buff, s));
+}