diff options
Diffstat (limited to 'lib/libarchive/archive_read_disk.c')
| -rw-r--r-- | lib/libarchive/archive_read_disk.c | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/lib/libarchive/archive_read_disk.c b/lib/libarchive/archive_read_disk.c new file mode 100644 index 0000000..3c0b815 --- /dev/null +++ b/lib/libarchive/archive_read_disk.c @@ -0,0 +1,198 @@ +/*- + * Copyright (c) 2003-2009 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 + * in this position and unchanged. + * 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("$FreeBSD$"); + +#include "archive.h" +#include "archive_string.h" +#include "archive_entry.h" +#include "archive_private.h" +#include "archive_read_disk_private.h" + +static int _archive_read_finish(struct archive *); +static int _archive_read_close(struct archive *); +static const char *trivial_lookup_gname(void *, gid_t gid); +static const char *trivial_lookup_uname(void *, uid_t uid); + +static struct archive_vtable * +archive_read_disk_vtable(void) +{ + static struct archive_vtable av; + static int inited = 0; + + if (!inited) { + av.archive_finish = _archive_read_finish; + av.archive_close = _archive_read_close; + } + return (&av); +} + +const char * +archive_read_disk_gname(struct archive *_a, gid_t gid) +{ + struct archive_read_disk *a = (struct archive_read_disk *)_a; + if (a->lookup_gname != NULL) + return ((*a->lookup_gname)(a->lookup_gname_data, gid)); + return (NULL); +} + +const char * +archive_read_disk_uname(struct archive *_a, uid_t uid) +{ + struct archive_read_disk *a = (struct archive_read_disk *)_a; + if (a->lookup_uname != NULL) + return ((*a->lookup_uname)(a->lookup_uname_data, uid)); + return (NULL); +} + +int +archive_read_disk_set_gname_lookup(struct archive *_a, + void *private_data, + const char * (*lookup_gname)(void *private, gid_t gid), + void (*cleanup_gname)(void *private)) +{ + struct archive_read_disk *a = (struct archive_read_disk *)_a; + __archive_check_magic(&a->archive, ARCHIVE_READ_DISK_MAGIC, + ARCHIVE_STATE_ANY, "archive_read_disk_set_gname_lookup"); + + if (a->cleanup_gname != NULL && a->lookup_gname_data != NULL) + (a->cleanup_gname)(a->lookup_gname_data); + + a->lookup_gname = lookup_gname; + a->cleanup_gname = cleanup_gname; + a->lookup_gname_data = private_data; + return (ARCHIVE_OK); +} + +int +archive_read_disk_set_uname_lookup(struct archive *_a, + void *private_data, + const char * (*lookup_uname)(void *private, uid_t uid), + void (*cleanup_uname)(void *private)) +{ + struct archive_read_disk *a = (struct archive_read_disk *)_a; + __archive_check_magic(&a->archive, ARCHIVE_READ_DISK_MAGIC, + ARCHIVE_STATE_ANY, "archive_read_disk_set_uname_lookup"); + + if (a->cleanup_uname != NULL && a->lookup_uname_data != NULL) + (a->cleanup_uname)(a->lookup_uname_data); + + a->lookup_uname = lookup_uname; + a->cleanup_uname = cleanup_uname; + a->lookup_uname_data = private_data; + return (ARCHIVE_OK); +} + +/* + * Create a new archive_read_disk object and initialize it with global state. + */ +struct archive * +archive_read_disk_new(void) +{ + struct archive_read_disk *a; + + a = (struct archive_read_disk *)malloc(sizeof(*a)); + if (a == NULL) + return (NULL); + memset(a, 0, sizeof(*a)); + a->archive.magic = ARCHIVE_READ_DISK_MAGIC; + /* We're ready to write a header immediately. */ + a->archive.state = ARCHIVE_STATE_HEADER; + a->archive.vtable = archive_read_disk_vtable(); + a->lookup_uname = trivial_lookup_uname; + a->lookup_gname = trivial_lookup_gname; + return (&a->archive); +} + +static int +_archive_read_finish(struct archive *_a) +{ + struct archive_read_disk *a = (struct archive_read_disk *)_a; + + if (a->cleanup_gname != NULL && a->lookup_gname_data != NULL) + (a->cleanup_gname)(a->lookup_gname_data); + if (a->cleanup_uname != NULL && a->lookup_uname_data != NULL) + (a->cleanup_uname)(a->lookup_uname_data); + archive_string_free(&a->archive.error_string); + free(a); + return (ARCHIVE_OK); +} + +static int +_archive_read_close(struct archive *_a) +{ + (void)_a; /* UNUSED */ + return (ARCHIVE_OK); +} + +int +archive_read_disk_set_symlink_logical(struct archive *_a) +{ + struct archive_read_disk *a = (struct archive_read_disk *)_a; + a->symlink_mode = 'L'; + a->follow_symlinks = 1; + return (ARCHIVE_OK); +} + +int +archive_read_disk_set_symlink_physical(struct archive *_a) +{ + struct archive_read_disk *a = (struct archive_read_disk *)_a; + a->symlink_mode = 'P'; + a->follow_symlinks = 0; + return (ARCHIVE_OK); +} + +int +archive_read_disk_set_symlink_hybrid(struct archive *_a) +{ + struct archive_read_disk *a = (struct archive_read_disk *)_a; + a->symlink_mode = 'H'; + a->follow_symlinks = 1; /* Follow symlinks initially. */ + return (ARCHIVE_OK); +} + +/* + * Trivial implementations of gname/uname lookup functions. + * These are normally overridden by the client, but these stub + * versions ensure that we always have something that works. + */ +static const char * +trivial_lookup_gname(void *private_data, gid_t gid) +{ + (void)private_data; /* UNUSED */ + (void)gid; /* UNUSED */ + return (NULL); +} + +static const char * +trivial_lookup_uname(void *private_data, uid_t uid) +{ + (void)private_data; /* UNUSED */ + (void)uid; /* UNUSED */ + return (NULL); +} |
