260 lines
6.9 KiB
C
260 lines
6.9 KiB
C
/*-
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* Copyright (c) 2008 Joerg Sonnenberger
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "archive_platform.h"
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__FBSDID("$FreeBSD$");
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include "archive.h"
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#include "archive_entry.h"
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#include "archive_private.h"
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#include "archive_write_private.h"
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struct mtree_writer {
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struct archive_entry *entry;
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struct archive_string buf;
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int first;
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};
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static int
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mtree_safe_char(char c)
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{
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if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'))
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return 1;
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if (c >= '0' && c <= '9')
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return 1;
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if (c == 35 || c == 61 || c == 92)
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return 0; /* #, = and \ are always quoted */
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if (c >= 33 && c <= 47) /* !"$%&'()*+,-./ */
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return 1;
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if (c >= 58 && c <= 64) /* :;<>?@ */
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return 1;
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if (c >= 91 && c <= 96) /* []^_` */
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return 1;
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if (c >= 123 && c <= 126) /* {|}~ */
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return 1;
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return 0;
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}
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static void
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mtree_quote(struct mtree_writer *mtree, const char *str)
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{
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const char *start;
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char buf[4];
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unsigned char c;
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for (start = str; *str != '\0'; ++str) {
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if (mtree_safe_char(*str))
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continue;
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if (start != str)
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archive_strncat(&mtree->buf, start, str - start);
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c = (unsigned char)*str;
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buf[0] = '\\';
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buf[1] = (c / 64) + '0';
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buf[2] = (c / 8 % 8) + '0';
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buf[3] = (c % 8) + '0';
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archive_strncat(&mtree->buf, buf, 4);
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start = str + 1;
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}
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if (start != str)
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archive_strncat(&mtree->buf, start, str - start);
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}
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static int
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archive_write_mtree_header(struct archive_write *a,
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struct archive_entry *entry)
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{
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struct mtree_writer *mtree= a->format_data;
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const char *path;
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mtree->entry = archive_entry_clone(entry);
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path = archive_entry_pathname(mtree->entry);
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if (mtree->first) {
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mtree->first = 0;
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archive_strcat(&mtree->buf, "#mtree\n");
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}
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mtree_quote(mtree, path);
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return (ARCHIVE_OK);
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}
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static int
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archive_write_mtree_finish_entry(struct archive_write *a)
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{
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struct mtree_writer *mtree = a->format_data;
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struct archive_entry *entry;
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const char *name;
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int ret;
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entry = mtree->entry;
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if (entry == NULL) {
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archive_set_error(&a->archive, ARCHIVE_ERRNO_PROGRAMMER,
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"Finished entry without being open first.");
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return (ARCHIVE_FATAL);
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}
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mtree->entry = NULL;
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if (archive_entry_nlink(entry) != 1 &&
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archive_entry_filetype(entry) != AE_IFDIR)
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archive_string_sprintf(&mtree->buf,
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" nlink=%u", archive_entry_nlink(entry));
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if ((name = archive_entry_gname(entry)) != NULL) {
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archive_strcat(&mtree->buf, " gname=");
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mtree_quote(mtree, name);
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}
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if ((name = archive_entry_uname(entry)) != NULL) {
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archive_strcat(&mtree->buf, " uname=");
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mtree_quote(mtree, name);
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}
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if ((name = archive_entry_fflags_text(entry)) != NULL) {
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archive_strcat(&mtree->buf, " flags=");
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mtree_quote(mtree, name);
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}
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archive_string_sprintf(&mtree->buf,
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" time=%jd mode=%o gid=%jd uid=%jd",
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(intmax_t)archive_entry_mtime(entry),
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archive_entry_mode(entry) & 07777,
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(intmax_t)archive_entry_gid(entry),
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(intmax_t)archive_entry_uid(entry));
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switch (archive_entry_filetype(entry)) {
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case AE_IFLNK:
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archive_strcat(&mtree->buf, " type=link link=");
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mtree_quote(mtree, archive_entry_symlink(entry));
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archive_strcat(&mtree->buf, "\n");
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break;
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case AE_IFSOCK:
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archive_strcat(&mtree->buf, " type=socket\n");
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break;
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case AE_IFCHR:
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archive_string_sprintf(&mtree->buf,
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" type=char device=native,%d,%d\n",
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archive_entry_rdevmajor(entry),
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archive_entry_rdevminor(entry));
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break;
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case AE_IFBLK:
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archive_string_sprintf(&mtree->buf,
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" type=block device=native,%d,%d\n",
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archive_entry_rdevmajor(entry),
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archive_entry_rdevminor(entry));
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break;
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case AE_IFDIR:
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archive_strcat(&mtree->buf, " type=dir\n");
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break;
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case AE_IFIFO:
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archive_strcat(&mtree->buf, " type=fifo\n");
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break;
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case AE_IFREG:
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default: /* Handle unknown file types as regular files. */
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archive_string_sprintf(&mtree->buf, " type=file size=%jd\n",
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(intmax_t)archive_entry_size(entry));
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break;
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}
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archive_entry_free(entry);
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if (mtree->buf.length > 32768) {
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ret = (a->compressor.write)(a, mtree->buf.s, mtree->buf.length);
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archive_string_empty(&mtree->buf);
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} else
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ret = ARCHIVE_OK;
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return (ret == ARCHIVE_OK ? ret : ARCHIVE_FATAL);
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}
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static int
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archive_write_mtree_finish(struct archive_write *a)
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{
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struct mtree_writer *mtree= a->format_data;
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archive_write_set_bytes_in_last_block(&a->archive, 1);
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return (a->compressor.write)(a, mtree->buf.s, mtree->buf.length);
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}
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static ssize_t
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archive_write_mtree_data(struct archive_write *a, const void *buff, size_t n)
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{
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(void)a; /* UNUSED */
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(void)buff; /* UNUSED */
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return n;
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}
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static int
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archive_write_mtree_destroy(struct archive_write *a)
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{
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struct mtree_writer *mtree= a->format_data;
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if (mtree == NULL)
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return (ARCHIVE_OK);
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archive_entry_free(mtree->entry);
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archive_string_free(&mtree->buf);
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free(mtree);
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a->format_data = NULL;
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return (ARCHIVE_OK);
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}
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int
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archive_write_set_format_mtree(struct archive *_a)
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{
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struct archive_write *a = (struct archive_write *)_a;
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struct mtree_writer *mtree;
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if (a->format_destroy != NULL)
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(a->format_destroy)(a);
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if ((mtree = malloc(sizeof(*mtree))) == NULL) {
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archive_set_error(&a->archive, ENOMEM,
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"Can't allocate mtree data");
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return (ARCHIVE_FATAL);
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}
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mtree->entry = NULL;
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mtree->first = 1;
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archive_string_init(&mtree->buf);
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a->format_data = mtree;
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a->format_destroy = archive_write_mtree_destroy;
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a->pad_uncompressed = 0;
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a->format_write_header = archive_write_mtree_header;
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a->format_finish = archive_write_mtree_finish;
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a->format_write_data = archive_write_mtree_data;
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a->format_finish_entry = archive_write_mtree_finish_entry;
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a->archive.archive_format = ARCHIVE_FORMAT_MTREE;
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a->archive.archive_format_name = "mtree";
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return (ARCHIVE_OK);
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}
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