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199 lines
6.1 KiB
199 lines
6.1 KiB
/*-
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* Copyright (c) 2003-2009 Tim Kientzle
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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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* in this position and unchanged.
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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 "archive.h"
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#include "archive_string.h"
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#include "archive_entry.h"
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#include "archive_private.h"
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#include "archive_read_disk_private.h"
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static int _archive_read_finish(struct archive *);
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static int _archive_read_close(struct archive *);
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static const char *trivial_lookup_gname(void *, gid_t gid);
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static const char *trivial_lookup_uname(void *, uid_t uid);
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static struct archive_vtable *
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archive_read_disk_vtable(void)
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{
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static struct archive_vtable av;
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static int inited = 0;
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if (!inited) {
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av.archive_finish = _archive_read_finish;
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av.archive_close = _archive_read_close;
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}
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return (&av);
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}
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const char *
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archive_read_disk_gname(struct archive *_a, gid_t gid)
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{
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struct archive_read_disk *a = (struct archive_read_disk *)_a;
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if (a->lookup_gname != NULL)
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return ((*a->lookup_gname)(a->lookup_gname_data, gid));
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return (NULL);
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}
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const char *
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archive_read_disk_uname(struct archive *_a, uid_t uid)
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{
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struct archive_read_disk *a = (struct archive_read_disk *)_a;
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if (a->lookup_uname != NULL)
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return ((*a->lookup_uname)(a->lookup_uname_data, uid));
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return (NULL);
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}
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int
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archive_read_disk_set_gname_lookup(struct archive *_a,
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void *private_data,
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const char * (*lookup_gname)(void *private, gid_t gid),
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void (*cleanup_gname)(void *private))
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{
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struct archive_read_disk *a = (struct archive_read_disk *)_a;
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__archive_check_magic(&a->archive, ARCHIVE_READ_DISK_MAGIC,
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ARCHIVE_STATE_ANY, "archive_read_disk_set_gname_lookup");
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if (a->cleanup_gname != NULL && a->lookup_gname_data != NULL)
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(a->cleanup_gname)(a->lookup_gname_data);
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a->lookup_gname = lookup_gname;
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a->cleanup_gname = cleanup_gname;
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a->lookup_gname_data = private_data;
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return (ARCHIVE_OK);
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}
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int
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archive_read_disk_set_uname_lookup(struct archive *_a,
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void *private_data,
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const char * (*lookup_uname)(void *private, uid_t uid),
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void (*cleanup_uname)(void *private))
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{
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struct archive_read_disk *a = (struct archive_read_disk *)_a;
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__archive_check_magic(&a->archive, ARCHIVE_READ_DISK_MAGIC,
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ARCHIVE_STATE_ANY, "archive_read_disk_set_uname_lookup");
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if (a->cleanup_uname != NULL && a->lookup_uname_data != NULL)
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(a->cleanup_uname)(a->lookup_uname_data);
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a->lookup_uname = lookup_uname;
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a->cleanup_uname = cleanup_uname;
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a->lookup_uname_data = private_data;
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return (ARCHIVE_OK);
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}
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/*
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* Create a new archive_read_disk object and initialize it with global state.
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*/
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struct archive *
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archive_read_disk_new(void)
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{
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struct archive_read_disk *a;
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a = (struct archive_read_disk *)malloc(sizeof(*a));
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if (a == NULL)
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return (NULL);
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memset(a, 0, sizeof(*a));
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a->archive.magic = ARCHIVE_READ_DISK_MAGIC;
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/* We're ready to write a header immediately. */
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a->archive.state = ARCHIVE_STATE_HEADER;
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a->archive.vtable = archive_read_disk_vtable();
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a->lookup_uname = trivial_lookup_uname;
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a->lookup_gname = trivial_lookup_gname;
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return (&a->archive);
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}
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static int
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_archive_read_finish(struct archive *_a)
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{
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struct archive_read_disk *a = (struct archive_read_disk *)_a;
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if (a->cleanup_gname != NULL && a->lookup_gname_data != NULL)
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(a->cleanup_gname)(a->lookup_gname_data);
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if (a->cleanup_uname != NULL && a->lookup_uname_data != NULL)
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(a->cleanup_uname)(a->lookup_uname_data);
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archive_string_free(&a->archive.error_string);
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free(a);
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return (ARCHIVE_OK);
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}
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static int
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_archive_read_close(struct archive *_a)
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{
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(void)_a; /* UNUSED */
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return (ARCHIVE_OK);
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}
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int
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archive_read_disk_set_symlink_logical(struct archive *_a)
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{
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struct archive_read_disk *a = (struct archive_read_disk *)_a;
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a->symlink_mode = 'L';
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a->follow_symlinks = 1;
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return (ARCHIVE_OK);
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}
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int
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archive_read_disk_set_symlink_physical(struct archive *_a)
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{
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struct archive_read_disk *a = (struct archive_read_disk *)_a;
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a->symlink_mode = 'P';
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a->follow_symlinks = 0;
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return (ARCHIVE_OK);
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}
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int
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archive_read_disk_set_symlink_hybrid(struct archive *_a)
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{
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struct archive_read_disk *a = (struct archive_read_disk *)_a;
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a->symlink_mode = 'H';
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a->follow_symlinks = 1; /* Follow symlinks initially. */
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return (ARCHIVE_OK);
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}
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/*
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* Trivial implementations of gname/uname lookup functions.
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* These are normally overridden by the client, but these stub
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* versions ensure that we always have something that works.
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*/
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static const char *
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trivial_lookup_gname(void *private_data, gid_t gid)
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{
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(void)private_data; /* UNUSED */
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(void)gid; /* UNUSED */
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return (NULL);
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}
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static const char *
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trivial_lookup_uname(void *private_data, uid_t uid)
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{
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(void)private_data; /* UNUSED */
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(void)uid; /* UNUSED */
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return (NULL);
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}
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