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Diffstat (limited to 'lib/libarchive/archive_entry.c')
| -rw-r--r-- | lib/libarchive/archive_entry.c | 1742 |
1 files changed, 1742 insertions, 0 deletions
diff --git a/lib/libarchive/archive_entry.c b/lib/libarchive/archive_entry.c new file mode 100644 index 0000000..7ec0052 --- /dev/null +++ b/lib/libarchive/archive_entry.c @@ -0,0 +1,1742 @@ +/*- + * Copyright (c) 2003-2004 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 <sys/stat.h> +#include <sys/types.h> +#ifdef MAJOR_IN_MKDEV +#include <sys/mkdev.h> +#else +#ifdef MAJOR_IN_SYSMACROS +#include <sys/sysmacros.h> +#endif +#endif +#ifdef HAVE_EXT2FS_EXT2_FS_H +#include <ext2fs/ext2_fs.h> /* for Linux file flags */ +#endif +#include <limits.h> +#include <stddef.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +/* Obtain suitable wide-character manipulation functions. */ +#ifdef HAVE_WCHAR_H +#include <wchar.h> +#else +static size_t wcslen(const wchar_t *s) +{ + const wchar_t *p = s; + while (*p != L'\0') + ++p; + return p - s; +} +static wchar_t * wcscpy(wchar_t *s1, const wchar_t *s2) +{ + wchar_t *dest = s1; + while ((*s1 = *s2) != L'\0') + ++s1, ++s2; + return dest; +} +#define wmemcpy(a,b,i) (wchar_t *)memcpy((a), (b), (i) * sizeof(wchar_t)) +/* Good enough for simple equality testing, but not for sorting. */ +#define wmemcmp(a,b,i) memcmp((a), (b), (i) * sizeof(wchar_t)) +#endif + +#include "archive.h" +#include "archive_entry.h" +#include "archive_private.h" + +#undef max +#define max(a, b) ((a)>(b)?(a):(b)) + +/* + * Handle wide character (i.e., Unicode) and non-wide character + * strings transparently. + * + */ + +struct aes { + const char *aes_mbs; + char *aes_mbs_alloc; + const wchar_t *aes_wcs; + wchar_t *aes_wcs_alloc; +}; + +struct ae_acl { + struct ae_acl *next; + int type; /* E.g., access or default */ + int tag; /* E.g., user/group/other/mask */ + int permset; /* r/w/x bits */ + int id; /* uid/gid for user/group */ + struct aes name; /* uname/gname */ +}; + +struct ae_xattr { + struct ae_xattr *next; + + char *name; + void *value; + size_t size; +}; + +static void aes_clean(struct aes *); +static void aes_copy(struct aes *dest, struct aes *src); +static const char * aes_get_mbs(struct aes *); +static const wchar_t * aes_get_wcs(struct aes *); +static void aes_set_mbs(struct aes *, const char *mbs); +static void aes_copy_mbs(struct aes *, const char *mbs); +/* static void aes_set_wcs(struct aes *, const wchar_t *wcs); */ +static void aes_copy_wcs(struct aes *, const wchar_t *wcs); + +static char * ae_fflagstostr(unsigned long bitset, unsigned long bitclear); +static const wchar_t *ae_wcstofflags(const wchar_t *stringp, + unsigned long *setp, unsigned long *clrp); +static void append_entry_w(wchar_t **wp, const wchar_t *prefix, int tag, + const wchar_t *wname, int perm, int id); +static void append_id_w(wchar_t **wp, int id); + +static int acl_special(struct archive_entry *entry, + int type, int permset, int tag); +static struct ae_acl *acl_new_entry(struct archive_entry *entry, + int type, int permset, int tag, int id); +static void next_field_w(const wchar_t **wp, const wchar_t **start, + const wchar_t **end, wchar_t *sep); +static int prefix_w(const wchar_t *start, const wchar_t *end, + const wchar_t *test); + + +/* + * Description of an archive entry. + * + * Basically, this is a "struct stat" with a few text fields added in. + * + * TODO: Add "comment", "charset", and possibly other entries + * that are supported by "pax interchange" format. However, GNU, ustar, + * cpio, and other variants don't support these features, so they're not an + * excruciatingly high priority right now. + * + * TODO: "pax interchange" format allows essentially arbitrary + * key/value attributes to be attached to any entry. Supporting + * such extensions may make this library useful for special + * applications (e.g., a package manager could attach special + * package-management attributes to each entry). There are tricky + * API issues involved, so this is not going to happen until + * there's a real demand for it. + * + * TODO: Design a good API for handling sparse files. + */ +struct archive_entry { + /* + * Note that ae_stat.st_mode & S_IFMT can be 0! + * + * This occurs when the actual file type of the object is not + * in the archive. For example, 'tar' archives store + * hardlinks without marking the type of the underlying + * object. + */ + struct stat ae_stat; + + /* + * Use aes here so that we get transparent mbs<->wcs conversions. + */ + struct aes ae_fflags_text; /* Text fflags per fflagstostr(3) */ + unsigned long ae_fflags_set; /* Bitmap fflags */ + unsigned long ae_fflags_clear; + struct aes ae_gname; /* Name of owning group */ + struct aes ae_hardlink; /* Name of target for hardlink */ + struct aes ae_pathname; /* Name of entry */ + struct aes ae_symlink; /* symlink contents */ + struct aes ae_uname; /* Name of owner */ + + struct ae_acl *acl_head; + struct ae_acl *acl_p; + int acl_state; /* See acl_next for details. */ + wchar_t *acl_text_w; + + struct ae_xattr *xattr_head; + struct ae_xattr *xattr_p; +}; + +static void +aes_clean(struct aes *aes) +{ + if (aes->aes_mbs_alloc) { + free(aes->aes_mbs_alloc); + aes->aes_mbs_alloc = NULL; + } + if (aes->aes_wcs_alloc) { + free(aes->aes_wcs_alloc); + aes->aes_wcs_alloc = NULL; + } + memset(aes, 0, sizeof(*aes)); +} + +static void +aes_copy(struct aes *dest, struct aes *src) +{ + *dest = *src; + if (src->aes_mbs != NULL) { + dest->aes_mbs_alloc = strdup(src->aes_mbs); + dest->aes_mbs = dest->aes_mbs_alloc; + if (dest->aes_mbs == NULL) + __archive_errx(1, "No memory for aes_copy()"); + } + + if (src->aes_wcs != NULL) { + dest->aes_wcs_alloc = malloc((wcslen(src->aes_wcs) + 1) + * sizeof(wchar_t)); + dest->aes_wcs = dest->aes_wcs_alloc; + if (dest->aes_wcs == NULL) + __archive_errx(1, "No memory for aes_copy()"); + wcscpy(dest->aes_wcs_alloc, src->aes_wcs); + } +} + +static const char * +aes_get_mbs(struct aes *aes) +{ + if (aes->aes_mbs == NULL && aes->aes_wcs == NULL) + return NULL; + if (aes->aes_mbs == NULL && aes->aes_wcs != NULL) { + /* + * XXX Need to estimate the number of byte in the + * multi-byte form. Assume that, on average, wcs + * chars encode to no more than 3 bytes. There must + * be a better way... XXX + */ + int mbs_length = wcslen(aes->aes_wcs) * 3 + 64; + aes->aes_mbs_alloc = malloc(mbs_length); + aes->aes_mbs = aes->aes_mbs_alloc; + if (aes->aes_mbs == NULL) + __archive_errx(1, "No memory for aes_get_mbs()"); + wcstombs(aes->aes_mbs_alloc, aes->aes_wcs, mbs_length - 1); + aes->aes_mbs_alloc[mbs_length - 1] = 0; + } + return (aes->aes_mbs); +} + +static const wchar_t * +aes_get_wcs(struct aes *aes) +{ + if (aes->aes_wcs == NULL && aes->aes_mbs == NULL) + return NULL; + if (aes->aes_wcs == NULL && aes->aes_mbs != NULL) { + /* + * No single byte will be more than one wide character, + * so this length estimate will always be big enough. + */ + int wcs_length = strlen(aes->aes_mbs); + aes->aes_wcs_alloc + = malloc((wcs_length + 1) * sizeof(wchar_t)); + aes->aes_wcs = aes->aes_wcs_alloc; + if (aes->aes_wcs == NULL) + __archive_errx(1, "No memory for aes_get_wcs()"); + mbstowcs(aes->aes_wcs_alloc, aes->aes_mbs, wcs_length); + aes->aes_wcs_alloc[wcs_length] = 0; + } + return (aes->aes_wcs); +} + +static void +aes_set_mbs(struct aes *aes, const char *mbs) +{ + if (aes->aes_mbs_alloc) { + free(aes->aes_mbs_alloc); + aes->aes_mbs_alloc = NULL; + } + if (aes->aes_wcs_alloc) { + free(aes->aes_wcs_alloc); + aes->aes_wcs_alloc = NULL; + } + aes->aes_mbs = mbs; + aes->aes_wcs = NULL; +} + +static void +aes_copy_mbs(struct aes *aes, const char *mbs) +{ + if (aes->aes_mbs_alloc) { + free(aes->aes_mbs_alloc); + aes->aes_mbs_alloc = NULL; + } + if (aes->aes_wcs_alloc) { + free(aes->aes_wcs_alloc); + aes->aes_wcs_alloc = NULL; + } + aes->aes_mbs_alloc = malloc((strlen(mbs) + 1) * sizeof(char)); + if (aes->aes_mbs_alloc == NULL) + __archive_errx(1, "No memory for aes_copy_mbs()"); + strcpy(aes->aes_mbs_alloc, mbs); + aes->aes_mbs = aes->aes_mbs_alloc; + aes->aes_wcs = NULL; +} + +#if 0 +static void +aes_set_wcs(struct aes *aes, const wchar_t *wcs) +{ + if (aes->aes_mbs_alloc) { + free(aes->aes_mbs_alloc); + aes->aes_mbs_alloc = NULL; + } + if (aes->aes_wcs_alloc) { + free(aes->aes_wcs_alloc); + aes->aes_wcs_alloc = NULL; + } + aes->aes_mbs = NULL; + aes->aes_wcs = wcs; +} +#endif + +static void +aes_copy_wcs(struct aes *aes, const wchar_t *wcs) +{ + if (aes->aes_mbs_alloc) { + free(aes->aes_mbs_alloc); + aes->aes_mbs_alloc = NULL; + } + if (aes->aes_wcs_alloc) { + free(aes->aes_wcs_alloc); + aes->aes_wcs_alloc = NULL; + } + aes->aes_mbs = NULL; + aes->aes_wcs_alloc = malloc((wcslen(wcs) + 1) * sizeof(wchar_t)); + if (aes->aes_wcs_alloc == NULL) + __archive_errx(1, "No memory for aes_copy_wcs()"); + wcscpy(aes->aes_wcs_alloc, wcs); + aes->aes_wcs = aes->aes_wcs_alloc; +} + +struct archive_entry * +archive_entry_clear(struct archive_entry *entry) +{ + aes_clean(&entry->ae_fflags_text); + aes_clean(&entry->ae_gname); + aes_clean(&entry->ae_hardlink); + aes_clean(&entry->ae_pathname); + aes_clean(&entry->ae_symlink); + aes_clean(&entry->ae_uname); + archive_entry_acl_clear(entry); + archive_entry_xattr_clear(entry); + memset(entry, 0, sizeof(*entry)); + return entry; +} + +struct archive_entry * +archive_entry_clone(struct archive_entry *entry) +{ + struct archive_entry *entry2; + + /* Allocate new structure and copy over all of the fields. */ + entry2 = malloc(sizeof(*entry2)); + if (entry2 == NULL) + return (NULL); + memset(entry2, 0, sizeof(*entry2)); + entry2->ae_stat = entry->ae_stat; + entry2->ae_fflags_set = entry->ae_fflags_set; + entry2->ae_fflags_clear = entry->ae_fflags_clear; + + aes_copy(&entry2->ae_fflags_text, &entry->ae_fflags_text); + aes_copy(&entry2->ae_gname, &entry->ae_gname); + aes_copy(&entry2->ae_hardlink, &entry->ae_hardlink); + aes_copy(&entry2->ae_pathname, &entry->ae_pathname); + aes_copy(&entry2->ae_symlink, &entry->ae_symlink); + aes_copy(&entry2->ae_uname, &entry->ae_uname); + + /* XXX TODO: Copy ACL data over as well. XXX */ + /* XXX TODO: Copy xattr data over as well. XXX */ + return (entry2); +} + +void +archive_entry_free(struct archive_entry *entry) +{ + archive_entry_clear(entry); + free(entry); +} + +struct archive_entry * +archive_entry_new(void) +{ + struct archive_entry *entry; + + entry = malloc(sizeof(*entry)); + if (entry == NULL) + return (NULL); + memset(entry, 0, sizeof(*entry)); + return (entry); +} + +/* + * Functions for reading fields from an archive_entry. + */ + +time_t +archive_entry_atime(struct archive_entry *entry) +{ + return (entry->ae_stat.st_atime); +} + +long +archive_entry_atime_nsec(struct archive_entry *entry) +{ + (void)entry; /* entry can be unused here. */ + return (ARCHIVE_STAT_ATIME_NANOS(&entry->ae_stat)); +} + +time_t +archive_entry_ctime(struct archive_entry *entry) +{ + return (entry->ae_stat.st_ctime); +} + +long +archive_entry_ctime_nsec(struct archive_entry *entry) +{ + (void)entry; /* entry can be unused here. */ + return (ARCHIVE_STAT_CTIME_NANOS(&entry->ae_stat)); +} + +dev_t +archive_entry_dev(struct archive_entry *entry) +{ + return (entry->ae_stat.st_dev); +} + +void +archive_entry_fflags(struct archive_entry *entry, + unsigned long *set, unsigned long *clear) +{ + *set = entry->ae_fflags_set; + *clear = entry->ae_fflags_clear; +} + +/* + * Note: if text was provided, this just returns that text. If you + * really need the text to be rebuilt in a canonical form, set the + * text, ask for the bitmaps, then set the bitmaps. (Setting the + * bitmaps clears any stored text.) This design is deliberate: if + * we're editing archives, we don't want to discard flags just because + * they aren't supported on the current system. The bitmap<->text + * conversions are platform-specific (see below). + */ +const char * +archive_entry_fflags_text(struct archive_entry *entry) +{ + const char *f; + char *p; + + f = aes_get_mbs(&entry->ae_fflags_text); + if (f != NULL) + return (f); + + if (entry->ae_fflags_set == 0 && entry->ae_fflags_clear == 0) + return (NULL); + + p = ae_fflagstostr(entry->ae_fflags_set, entry->ae_fflags_clear); + if (p == NULL) + return (NULL); + + aes_copy_mbs(&entry->ae_fflags_text, p); + free(p); + f = aes_get_mbs(&entry->ae_fflags_text); + return (f); +} + +gid_t +archive_entry_gid(struct archive_entry *entry) +{ + return (entry->ae_stat.st_gid); +} + +const char * +archive_entry_gname(struct archive_entry *entry) +{ + return (aes_get_mbs(&entry->ae_gname)); +} + +const wchar_t * +archive_entry_gname_w(struct archive_entry *entry) +{ + return (aes_get_wcs(&entry->ae_gname)); +} + +const char * +archive_entry_hardlink(struct archive_entry *entry) +{ + return (aes_get_mbs(&entry->ae_hardlink)); +} + +const wchar_t * +archive_entry_hardlink_w(struct archive_entry *entry) +{ + return (aes_get_wcs(&entry->ae_hardlink)); +} + +ino_t +archive_entry_ino(struct archive_entry *entry) +{ + return (entry->ae_stat.st_ino); +} + +mode_t +archive_entry_mode(struct archive_entry *entry) +{ + return (entry->ae_stat.st_mode); +} + +time_t +archive_entry_mtime(struct archive_entry *entry) +{ + return (entry->ae_stat.st_mtime); +} + +long +archive_entry_mtime_nsec(struct archive_entry *entry) +{ + (void)entry; /* entry can be unused here. */ + return (ARCHIVE_STAT_MTIME_NANOS(&entry->ae_stat)); +} + +const char * +archive_entry_pathname(struct archive_entry *entry) +{ + return (aes_get_mbs(&entry->ae_pathname)); +} + +const wchar_t * +archive_entry_pathname_w(struct archive_entry *entry) +{ + return (aes_get_wcs(&entry->ae_pathname)); +} + +dev_t +archive_entry_rdev(struct archive_entry *entry) +{ + return (entry->ae_stat.st_rdev); +} + +dev_t +archive_entry_rdevmajor(struct archive_entry *entry) +{ + return (major(entry->ae_stat.st_rdev)); +} + +dev_t +archive_entry_rdevminor(struct archive_entry *entry) +{ + return (minor(entry->ae_stat.st_rdev)); +} + +int64_t +archive_entry_size(struct archive_entry *entry) +{ + return (entry->ae_stat.st_size); +} + +const struct stat * +archive_entry_stat(struct archive_entry *entry) +{ + return (&entry->ae_stat); +} + +const char * +archive_entry_symlink(struct archive_entry *entry) +{ + return (aes_get_mbs(&entry->ae_symlink)); +} + +const wchar_t * +archive_entry_symlink_w(struct archive_entry *entry) +{ + return (aes_get_wcs(&entry->ae_symlink)); +} + +uid_t +archive_entry_uid(struct archive_entry *entry) +{ + return (entry->ae_stat.st_uid); +} + +const char * +archive_entry_uname(struct archive_entry *entry) +{ + return (aes_get_mbs(&entry->ae_uname)); +} + +const wchar_t * +archive_entry_uname_w(struct archive_entry *entry) +{ + return (aes_get_wcs(&entry->ae_uname)); +} + +/* + * Functions to set archive_entry properties. + */ + +/* + * Note "copy" not "set" here. The "set" functions that accept a pointer + * only store the pointer; they don't copy the underlying object. + */ +void +archive_entry_copy_stat(struct archive_entry *entry, const struct stat *st) +{ + entry->ae_stat = *st; +} + +void +archive_entry_set_fflags(struct archive_entry *entry, + unsigned long set, unsigned long clear) +{ + aes_clean(&entry->ae_fflags_text); + entry->ae_fflags_set = set; + entry->ae_fflags_clear = clear; +} + +const wchar_t * +archive_entry_copy_fflags_text_w(struct archive_entry *entry, + const wchar_t *flags) +{ + aes_copy_wcs(&entry->ae_fflags_text, flags); + return (ae_wcstofflags(flags, + &entry->ae_fflags_set, &entry->ae_fflags_clear)); +} + +void +archive_entry_set_gid(struct archive_entry *entry, gid_t g) +{ + entry->ae_stat.st_gid = g; +} + +void +archive_entry_set_gname(struct archive_entry *entry, const char *name) +{ + aes_set_mbs(&entry->ae_gname, name); +} + +void +archive_entry_copy_gname_w(struct archive_entry *entry, const wchar_t *name) +{ + aes_copy_wcs(&entry->ae_gname, name); +} + +void +archive_entry_set_hardlink(struct archive_entry *entry, const char *target) +{ + aes_set_mbs(&entry->ae_hardlink, target); +} + +void +archive_entry_copy_hardlink(struct archive_entry *entry, const char *target) +{ + aes_copy_mbs(&entry->ae_hardlink, target); +} + +void +archive_entry_copy_hardlink_w(struct archive_entry *entry, const wchar_t *target) +{ + aes_copy_wcs(&entry->ae_hardlink, target); +} + +void +archive_entry_set_atime(struct archive_entry *entry, time_t t, long ns) +{ + entry->ae_stat.st_atime = t; + ARCHIVE_STAT_SET_ATIME_NANOS(&entry->ae_stat, ns); +} + +void +archive_entry_set_ctime(struct archive_entry *entry, time_t t, long ns) +{ + entry->ae_stat.st_ctime = t; + ARCHIVE_STAT_SET_CTIME_NANOS(&entry->ae_stat, ns); +} + +/* Set symlink if symlink is already set, else set hardlink. */ +void +archive_entry_set_link(struct archive_entry *entry, const char *target) +{ + if (entry->ae_symlink.aes_mbs != NULL || + entry->ae_symlink.aes_wcs != NULL) + aes_set_mbs(&entry->ae_symlink, target); + else + aes_set_mbs(&entry->ae_hardlink, target); +} + +void +archive_entry_set_mode(struct archive_entry *entry, mode_t m) +{ + entry->ae_stat.st_mode = m; +} + +void +archive_entry_set_mtime(struct archive_entry *entry, time_t m, long ns) +{ + entry->ae_stat.st_mtime = m; + ARCHIVE_STAT_SET_MTIME_NANOS(&entry->ae_stat, ns); +} + +void +archive_entry_set_pathname(struct archive_entry *entry, const char *name) +{ + aes_set_mbs(&entry->ae_pathname, name); +} + +void +archive_entry_copy_pathname(struct archive_entry *entry, const char *name) +{ + aes_copy_mbs(&entry->ae_pathname, name); +} + +void +archive_entry_copy_pathname_w(struct archive_entry *entry, const wchar_t *name) +{ + aes_copy_wcs(&entry->ae_pathname, name); +} + +void +archive_entry_set_rdevmajor(struct archive_entry *entry, dev_t m) +{ + dev_t d; + + d = entry->ae_stat.st_rdev; + entry->ae_stat.st_rdev = makedev(major(m), minor(d)); +} + +void +archive_entry_set_rdevminor(struct archive_entry *entry, dev_t m) +{ + dev_t d; + + d = entry->ae_stat.st_rdev; + entry->ae_stat.st_rdev = makedev(major(d), minor(m)); +} + +void +archive_entry_set_size(struct archive_entry *entry, int64_t s) +{ + entry->ae_stat.st_size = s; +} + +void +archive_entry_set_symlink(struct archive_entry *entry, const char *linkname) +{ + aes_set_mbs(&entry->ae_symlink, linkname); +} + +void +archive_entry_copy_symlink_w(struct archive_entry *entry, const wchar_t *linkname) +{ + aes_copy_wcs(&entry->ae_symlink, linkname); +} + +void +archive_entry_set_uid(struct archive_entry *entry, uid_t u) +{ + entry->ae_stat.st_uid = u; +} + +void +archive_entry_set_uname(struct archive_entry *entry, const char *name) +{ + aes_set_mbs(&entry->ae_uname, name); +} + +void +archive_entry_copy_uname_w(struct archive_entry *entry, const wchar_t *name) +{ + aes_copy_wcs(&entry->ae_uname, name); +} + +/* + * ACL management. The following would, of course, be a lot simpler + * if: 1) the last draft of POSIX.1e were a really thorough and + * complete standard that addressed the needs of ACL archiving and 2) + * everyone followed it faithfully. Alas, neither is true, so the + * following is a lot more complex than might seem necessary to the + * uninitiated. + */ + +void +archive_entry_acl_clear(struct archive_entry *entry) +{ + struct ae_acl *ap; + + while (entry->acl_head != NULL) { + ap = entry->acl_head->next; + aes_clean(&entry->acl_head->name); + free(entry->acl_head); + entry->acl_head = ap; + } + if (entry->acl_text_w != NULL) { + free(entry->acl_text_w); + entry->acl_text_w = NULL; + } + entry->acl_p = NULL; + entry->acl_state = 0; /* Not counting. */ +} + +/* + * Add a single ACL entry to the internal list of ACL data. + */ +void +archive_entry_acl_add_entry(struct archive_entry *entry, + int type, int permset, int tag, int id, const char *name) +{ + struct ae_acl *ap; + + if (acl_special(entry, type, permset, tag) == 0) + return; + ap = acl_new_entry(entry, type, permset, tag, id); + if (ap == NULL) { + /* XXX Error XXX */ + return; + } + if (name != NULL && *name != '\0') + aes_copy_mbs(&ap->name, name); + else + aes_clean(&ap->name); +} + +/* + * As above, but with a wide-character name. + */ +void +archive_entry_acl_add_entry_w(struct archive_entry *entry, + int type, int permset, int tag, int id, const wchar_t *name) +{ + struct ae_acl *ap; + + if (acl_special(entry, type, permset, tag) == 0) + return; + ap = acl_new_entry(entry, type, permset, tag, id); + if (ap == NULL) { + /* XXX Error XXX */ + return; + } + if (name != NULL && *name != L'\0') + aes_copy_wcs(&ap->name, name); + else + aes_clean(&ap->name); +} + +/* + * If this ACL entry is part of the standard POSIX permissions set, + * store the permissions in the stat structure and return zero. + */ +static int +acl_special(struct archive_entry *entry, int type, int permset, int tag) +{ + if (type == ARCHIVE_ENTRY_ACL_TYPE_ACCESS) { + switch (tag) { + case ARCHIVE_ENTRY_ACL_USER_OBJ: + entry->ae_stat.st_mode &= ~0700; + entry->ae_stat.st_mode |= (permset & 7) << 6; + return (0); + case ARCHIVE_ENTRY_ACL_GROUP_OBJ: + entry->ae_stat.st_mode &= ~0070; + entry->ae_stat.st_mode |= (permset & 7) << 3; + return (0); + case ARCHIVE_ENTRY_ACL_OTHER: + entry->ae_stat.st_mode &= ~0007; + entry->ae_stat.st_mode |= permset & 7; + return (0); + } + } + return (1); +} + +/* + * Allocate and populate a new ACL entry with everything but the + * name. + */ +static struct ae_acl * +acl_new_entry(struct archive_entry *entry, + int type, int permset, int tag, int id) +{ + struct ae_acl *ap; + + if (type != ARCHIVE_ENTRY_ACL_TYPE_ACCESS && + type != ARCHIVE_ENTRY_ACL_TYPE_DEFAULT) + return (NULL); + if (entry->acl_text_w != NULL) { + free(entry->acl_text_w); + entry->acl_text_w = NULL; + } + + /* XXX TODO: More sanity-checks on the arguments XXX */ + + /* If there's a matching entry already in the list, overwrite it. */ + for (ap = entry->acl_head; ap != NULL; ap = ap->next) { + if (ap->type == type && ap->tag == tag && ap->id == id) { + ap->permset = permset; + return (ap); + } + } + + /* Add a new entry to the list. */ + ap = malloc(sizeof(*ap)); + if (ap == NULL) + return (NULL); + memset(ap, 0, sizeof(*ap)); + ap->next = entry->acl_head; + entry->acl_head = ap; + ap->type = type; + ap->tag = tag; + ap->id = id; + ap->permset = permset; + return (ap); +} + +/* + * Return a count of entries matching "want_type". + */ +int +archive_entry_acl_count(struct archive_entry *entry, int want_type) +{ + int count; + struct ae_acl *ap; + + count = 0; + ap = entry->acl_head; + while (ap != NULL) { + if ((ap->type & want_type) != 0) + count++; + ap = ap->next; + } + + if (count > 0 && ((want_type & ARCHIVE_ENTRY_ACL_TYPE_ACCESS) != 0)) + count += 3; + return (count); +} + +/* + * Prepare for reading entries from the ACL data. Returns a count + * of entries matching "want_type", or zero if there are no + * non-extended ACL entries of that type. + */ +int +archive_entry_acl_reset(struct archive_entry *entry, int want_type) +{ + int count, cutoff; + + count = archive_entry_acl_count(entry, want_type); + + /* + * If the only entries are the three standard ones, + * then don't return any ACL data. (In this case, + * client can just use chmod(2) to set permissions.) + */ + if ((want_type & ARCHIVE_ENTRY_ACL_TYPE_ACCESS) != 0) + cutoff = 3; + else + cutoff = 0; + + if (count > cutoff) + entry->acl_state = ARCHIVE_ENTRY_ACL_USER_OBJ; + else + entry->acl_state = 0; + entry->acl_p = entry->acl_head; + return (count); +} + +/* + * Return the next ACL entry in the list. Fake entries for the + * standard permissions and include them in the returned list. + */ + +int +archive_entry_acl_next(struct archive_entry *entry, int want_type, int *type, + int *permset, int *tag, int *id, const char **name) +{ + *name = NULL; + *id = -1; + + /* + * The acl_state is either zero (no entries available), -1 + * (reading from list), or an entry type (retrieve that type + * from ae_stat.st_mode). + */ + if (entry->acl_state == 0) + return (ARCHIVE_WARN); + + /* The first three access entries are special. */ + if ((want_type & ARCHIVE_ENTRY_ACL_TYPE_ACCESS) != 0) { + switch (entry->acl_state) { + case ARCHIVE_ENTRY_ACL_USER_OBJ: + *permset = (entry->ae_stat.st_mode >> 6) & 7; + *type = ARCHIVE_ENTRY_ACL_TYPE_ACCESS; + *tag = ARCHIVE_ENTRY_ACL_USER_OBJ; + entry->acl_state = ARCHIVE_ENTRY_ACL_GROUP_OBJ; + return (ARCHIVE_OK); + case ARCHIVE_ENTRY_ACL_GROUP_OBJ: + *permset = (entry->ae_stat.st_mode >> 3) & 7; + *type = ARCHIVE_ENTRY_ACL_TYPE_ACCESS; + *tag = ARCHIVE_ENTRY_ACL_GROUP_OBJ; + entry->acl_state = ARCHIVE_ENTRY_ACL_OTHER; + return (ARCHIVE_OK); + case ARCHIVE_ENTRY_ACL_OTHER: + *permset = entry->ae_stat.st_mode & 7; + *type = ARCHIVE_ENTRY_ACL_TYPE_ACCESS; + *tag = ARCHIVE_ENTRY_ACL_OTHER; + entry->acl_state = -1; + entry->acl_p = entry->acl_head; + return (ARCHIVE_OK); + default: + break; + } + } + + while (entry->acl_p != NULL && (entry->acl_p->type & want_type) == 0) + entry->acl_p = entry->acl_p->next; + if (entry->acl_p == NULL) { + entry->acl_state = 0; + return (ARCHIVE_WARN); + } + *type = entry->acl_p->type; + *permset = entry->acl_p->permset; + *tag = entry->acl_p->tag; + *id = entry->acl_p->id; + *name = aes_get_mbs(&entry->acl_p->name); + entry->acl_p = entry->acl_p->next; + return (ARCHIVE_OK); +} + +/* + * Generate a text version of the ACL. The flags parameter controls + * the style of the generated ACL. + */ +const wchar_t * +archive_entry_acl_text_w(struct archive_entry *entry, int flags) +{ + int count; + int length; + const wchar_t *wname; + const wchar_t *prefix; + wchar_t separator; + struct ae_acl *ap; + int id; + wchar_t *wp; + + if (entry->acl_text_w != NULL) { + free (entry->acl_text_w); + entry->acl_text_w = NULL; + } + + separator = L','; + count = 0; + length = 0; + ap = entry->acl_head; + while (ap != NULL) { + if ((ap->type & flags) != 0) { + count++; + if ((flags & ARCHIVE_ENTRY_ACL_STYLE_MARK_DEFAULT) && + (ap->type & ARCHIVE_ENTRY_ACL_TYPE_DEFAULT)) + length += 8; /* "default:" */ + length += 5; /* tag name */ + length += 1; /* colon */ + wname = aes_get_wcs(&ap->name); + if (wname != NULL) + length += wcslen(wname); + length ++; /* colon */ + length += 3; /* rwx */ + length += 1; /* colon */ + length += max(sizeof(uid_t), sizeof(gid_t)) * 3 + 1; + length ++; /* newline */ + } + ap = ap->next; + } + + if (count > 0 && ((flags & ARCHIVE_ENTRY_ACL_TYPE_ACCESS) != 0)) { + length += 10; /* "user::rwx\n" */ + length += 11; /* "group::rwx\n" */ + length += 11; /* "other::rwx\n" */ + } + + if (count == 0) + return (NULL); + + /* Now, allocate the string and actually populate it. */ + wp = entry->acl_text_w = malloc(length * sizeof(wchar_t)); + if (wp == NULL) + __archive_errx(1, "No memory to generate the text version of the ACL"); + count = 0; + if ((flags & ARCHIVE_ENTRY_ACL_TYPE_ACCESS) != 0) { + append_entry_w(&wp, NULL, ARCHIVE_ENTRY_ACL_USER_OBJ, NULL, + entry->ae_stat.st_mode & 0700, -1); + *wp++ = ','; + append_entry_w(&wp, NULL, ARCHIVE_ENTRY_ACL_GROUP_OBJ, NULL, + entry->ae_stat.st_mode & 0070, -1); + *wp++ = ','; + append_entry_w(&wp, NULL, ARCHIVE_ENTRY_ACL_OTHER, NULL, + entry->ae_stat.st_mode & 0007, -1); + count += 3; + + ap = entry->acl_head; + while (ap != NULL) { + if ((ap->type & ARCHIVE_ENTRY_ACL_TYPE_ACCESS) != 0) { + wname = aes_get_wcs(&ap->name); + *wp++ = separator; + if (flags & ARCHIVE_ENTRY_ACL_STYLE_EXTRA_ID) + id = ap->id; + else + id = -1; + append_entry_w(&wp, NULL, ap->tag, wname, + ap->permset, id); + count++; + } + ap = ap->next; + } + } + + + if ((flags & ARCHIVE_ENTRY_ACL_TYPE_DEFAULT) != 0) { + if (flags & ARCHIVE_ENTRY_ACL_STYLE_MARK_DEFAULT) + prefix = L"default:"; + else + prefix = NULL; + ap = entry->acl_head; + count = 0; + while (ap != NULL) { + if ((ap->type & ARCHIVE_ENTRY_ACL_TYPE_DEFAULT) != 0) { + wname = aes_get_wcs(&ap->name); + if (count > 0) + *wp++ = separator; + if (flags & ARCHIVE_ENTRY_ACL_STYLE_EXTRA_ID) + id = ap->id; + else + id = -1; + append_entry_w(&wp, prefix, ap->tag, + wname, ap->permset, id); + count ++; + } + ap = ap->next; + } + } + + return (entry->acl_text_w); +} + +static void +append_id_w(wchar_t **wp, int id) +{ + if (id > 9) + append_id_w(wp, id / 10); + *(*wp)++ = L"0123456789"[id % 10]; +} + +static void +append_entry_w(wchar_t **wp, const wchar_t *prefix, int tag, + const wchar_t *wname, int perm, int id) +{ + if (prefix != NULL) { + wcscpy(*wp, prefix); + *wp += wcslen(*wp); + } + switch (tag) { + case ARCHIVE_ENTRY_ACL_USER_OBJ: + wname = NULL; + id = -1; + /* FALL THROUGH */ + case ARCHIVE_ENTRY_ACL_USER: + wcscpy(*wp, L"user"); + break; + case ARCHIVE_ENTRY_ACL_GROUP_OBJ: + wname = NULL; + id = -1; + /* FALL THROUGH */ + case ARCHIVE_ENTRY_ACL_GROUP: + wcscpy(*wp, L"group"); + break; + case ARCHIVE_ENTRY_ACL_MASK: + wcscpy(*wp, L"mask"); + wname = NULL; + id = -1; + break; + case ARCHIVE_ENTRY_ACL_OTHER: + wcscpy(*wp, L"other"); + wname = NULL; + id = -1; + break; + } + *wp += wcslen(*wp); + *(*wp)++ = L':'; + if (wname != NULL) { + wcscpy(*wp, wname); + *wp += wcslen(*wp); + } + *(*wp)++ = L':'; + *(*wp)++ = (perm & 0444) ? L'r' : L'-'; + *(*wp)++ = (perm & 0222) ? L'w' : L'-'; + *(*wp)++ = (perm & 0111) ? L'x' : L'-'; + if (id != -1) { + *(*wp)++ = L':'; + append_id_w(wp, id); + } + **wp = L'\0'; +} + +/* + * Parse a textual ACL. This automatically recognizes and supports + * extensions described above. The 'type' argument is used to + * indicate the type that should be used for any entries not + * explicitly marked as "default:". + */ +int +__archive_entry_acl_parse_w(struct archive_entry *entry, + const wchar_t *text, int default_type) +{ + int type, tag, permset, id; + const wchar_t *start, *end; + const wchar_t *name_start, *name_end; + wchar_t sep; + wchar_t *namebuff; + int namebuff_length; + + name_start = name_end = NULL; + namebuff = NULL; + namebuff_length = 0; + + while (text != NULL && *text != L'\0') { + next_field_w(&text, &start, &end, &sep); + if (sep != L':') + goto fail; + + /* + * Solaris extension: "defaultuser::rwx" is the + * default ACL corresponding to "user::rwx", etc. + */ + if (end-start > 7 && wmemcmp(start, L"default", 7) == 0) { + type = ARCHIVE_ENTRY_ACL_TYPE_DEFAULT; + start += 7; + } else + type = default_type; + + if (prefix_w(start, end, L"user")) { + next_field_w(&text, &start, &end, &sep); + if (sep != L':') + goto fail; + if (end > start) { + tag = ARCHIVE_ENTRY_ACL_USER; + name_start = start; + name_end = end; + } else + tag = ARCHIVE_ENTRY_ACL_USER_OBJ; + } else if (prefix_w(start, end, L"group")) { + next_field_w(&text, &start, &end, &sep); + if (sep != L':') + goto fail; + if (end > start) { + tag = ARCHIVE_ENTRY_ACL_GROUP; + name_start = start; + name_end = end; + } else + tag = ARCHIVE_ENTRY_ACL_GROUP_OBJ; + } else if (prefix_w(start, end, L"other")) { + next_field_w(&text, &start, &end, &sep); + if (sep != L':') + goto fail; + if (end > start) + goto fail; + tag = ARCHIVE_ENTRY_ACL_OTHER; + } else if (prefix_w(start, end, L"mask")) { + next_field_w(&text, &start, &end, &sep); + if (sep != L':') + goto fail; + if (end > start) + goto fail; + tag = ARCHIVE_ENTRY_ACL_MASK; + } else + goto fail; + + next_field_w(&text, &start, &end, &sep); + permset = 0; + while (start < end) { + switch (*start++) { + case 'r': case 'R': + permset |= ARCHIVE_ENTRY_ACL_READ; + break; + case 'w': case 'W': + permset |= ARCHIVE_ENTRY_ACL_WRITE; + break; + case 'x': case 'X': + permset |= ARCHIVE_ENTRY_ACL_EXECUTE; + break; + case '-': + break; + default: + goto fail; + } + } + + /* + * Support star-compatible numeric UID/GID extension. + * This extension adds a ":" followed by the numeric + * ID so that "group:groupname:rwx", for example, + * becomes "group:groupname:rwx:999", where 999 is the + * numeric GID. This extension makes it possible, for + * example, to correctly restore ACLs on a system that + * might have a damaged passwd file or be disconnected + * from a central NIS server. This extension is compatible + * with POSIX.1e draft 17. + */ + if (sep == L':' && (tag == ARCHIVE_ENTRY_ACL_USER || + tag == ARCHIVE_ENTRY_ACL_GROUP)) { + next_field_w(&text, &start, &end, &sep); + + id = 0; + while (start < end && *start >= '0' && *start <= '9') { + if (id > (INT_MAX / 10)) + id = INT_MAX; + else { + id *= 10; + id += *start - '0'; + start++; + } + } + } else + id = -1; /* No id specified. */ + + /* Skip any additional entries. */ + while (sep == L':') { + next_field_w(&text, &start, &end, &sep); + } + + /* Add entry to the internal list. */ + if (name_end == name_start) { + archive_entry_acl_add_entry_w(entry, type, permset, + tag, id, NULL); + } else { + if (namebuff_length <= name_end - name_start) { + if (namebuff != NULL) + free(namebuff); + namebuff_length = name_end - name_start + 256; + namebuff = + malloc(namebuff_length * sizeof(wchar_t)); + if (namebuff == NULL) + goto fail; + } + wmemcpy(namebuff, name_start, name_end - name_start); + namebuff[name_end - name_start] = L'\0'; + archive_entry_acl_add_entry_w(entry, type, + permset, tag, id, namebuff); + } + } + if (namebuff != NULL) + free(namebuff); + return (ARCHIVE_OK); + +fail: + if (namebuff != NULL) + free(namebuff); + return (ARCHIVE_WARN); +} + +/* + * extended attribute handling + */ + +void +archive_entry_xattr_clear(struct archive_entry *entry) +{ + struct ae_xattr *xp; + + while (entry->xattr_head != NULL) { + xp = entry->xattr_head->next; + free(entry->xattr_head->name); + free(entry->xattr_head->value); + free(entry->xattr_head); + entry->xattr_head = xp; + } + + entry->xattr_head = NULL; +} + +void +archive_entry_xattr_add_entry(struct archive_entry *entry, + const char *name, const void *value, size_t size) +{ + struct ae_xattr *xp; + + for (xp = entry->xattr_head; xp != NULL; xp = xp->next) + ; + + if ((xp = malloc(sizeof(struct ae_xattr))) == NULL) + /* XXX Error XXX */ + return; + + xp->name = strdup(name); + if ((xp -> value = malloc(size)) != NULL) { + memcpy(xp -> value, value, size); + xp -> size = size; + } else + xp -> size = 0; + + xp->next = entry->xattr_head; + entry->xattr_head = xp; +} + + +/* + * returns number of the extended attribute entries + */ +int +archive_entry_xattr_count(struct archive_entry *entry) +{ + struct ae_xattr *xp; + int count = 0; + + for (xp = entry->xattr_head; xp != NULL; xp = xp->next) + count++; + + return count; +} + +int +archive_entry_xattr_reset(struct archive_entry * entry) +{ + entry->xattr_p = entry->xattr_head; + + return archive_entry_xattr_count(entry); +} + +int +archive_entry_xattr_next(struct archive_entry * entry, + const char **name, const void **value, size_t *size) +{ + if (entry->xattr_p) { + *name = entry->xattr_p->name; + *value = entry->xattr_p->value; + *size = entry->xattr_p->size; + + entry->xattr_p = entry->xattr_p->next; + + return (ARCHIVE_OK); + } else { + *name = NULL; + *name = NULL; + *size = (size_t)0; + return (ARCHIVE_WARN); + } +} + +/* + * end of xattr handling + */ + +/* + * Match "[:whitespace:]*(.*)[:whitespace:]*[:,\n]". *wp is updated + * to point to just after the separator. *start points to the first + * character of the matched text and *end just after the last + * character of the matched identifier. In particular *end - *start + * is the length of the field body, not including leading or trailing + * whitespace. + */ +static void +next_field_w(const wchar_t **wp, const wchar_t **start, + const wchar_t **end, wchar_t *sep) +{ + /* Skip leading whitespace to find start of field. */ + while (**wp == L' ' || **wp == L'\t' || **wp == L'\n') { + (*wp)++; + } + *start = *wp; + + /* Scan for the separator. */ + while (**wp != L'\0' && **wp != L',' && **wp != L':' && + **wp != L'\n') { + (*wp)++; + } + *sep = **wp; + + /* Trim trailing whitespace to locate end of field. */ + *end = *wp - 1; + while (**end == L' ' || **end == L'\t' || **end == L'\n') { + (*end)--; + } + (*end)++; + + /* Adjust scanner location. */ + if (**wp != L'\0') + (*wp)++; +} + +static int +prefix_w(const wchar_t *start, const wchar_t *end, const wchar_t *test) +{ + if (start == end) + return (0); + + if (*start++ != *test++) + return (0); + + while (start < end && *start++ == *test++) + ; + + if (start < end) + return (0); + + return (1); +} + + +/* + * Following code is modified from UC Berkeley sources, and + * is subject to the following copyright notice. + */ + +/*- + * Copyright (c) 1993 + * The Regents of the University of California. 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. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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. + */ + +static struct flag { + const char *name; + const wchar_t *wname; + unsigned long set; + unsigned long clear; +} flags[] = { + /* Preferred (shorter) names per flag first, all prefixed by "no" */ +#ifdef SF_APPEND + { "nosappnd", L"nosappnd", SF_APPEND, 0 }, + { "nosappend", L"nosappend", SF_APPEND, 0 }, +#endif +#ifdef EXT2_APPEND_FL /* 'a' */ + { "nosappnd", L"nosappnd", EXT2_APPEND_FL, 0 }, + { "nosappend", L"nosappend", EXT2_APPEND_FL, 0 }, +#endif +#ifdef SF_ARCHIVED + { "noarch", L"noarch", SF_ARCHIVED, 0 }, + { "noarchived", L"noarchived", SF_ARCHIVED, 0 }, +#endif +#ifdef SF_IMMUTABLE + { "noschg", L"noschg", SF_IMMUTABLE, 0 }, + { "noschange", L"noschange", SF_IMMUTABLE, 0 }, + { "nosimmutable", L"nosimmutable", SF_IMMUTABLE, 0 }, +#endif +#ifdef EXT2_IMMUTABLE_FL /* 'i' */ + { "noschg", L"noschg", EXT2_IMMUTABLE_FL, 0 }, + { "noschange", L"noschange", EXT2_IMMUTABLE_FL, 0 }, + { "nosimmutable", L"nosimmutable", EXT2_IMMUTABLE_FL, 0 }, +#endif +#ifdef SF_NOUNLINK + { "nosunlnk", L"nosunlnk", SF_NOUNLINK, 0 }, + { "nosunlink", L"nosunlink", SF_NOUNLINK, 0 }, +#endif +#ifdef SF_SNAPSHOT + { "nosnapshot", L"nosnapshot", SF_SNAPSHOT, 0 }, +#endif +#ifdef UF_APPEND + { "nouappnd", L"nouappnd", UF_APPEND, 0 }, + { "nouappend", L"nouappend", UF_APPEND, 0 }, +#endif +#ifdef UF_IMMUTABLE + { "nouchg", L"nouchg", UF_IMMUTABLE, 0 }, + { "nouchange", L"nouchange", UF_IMMUTABLE, 0 }, + { "nouimmutable", L"nouimmutable", UF_IMMUTABLE, 0 }, +#endif +#ifdef UF_NODUMP + { "nodump", L"nodump", 0, UF_NODUMP}, +#endif +#ifdef EXT2_NODUMP_FL /* 'd' */ + { "nodump", L"nodump", 0, EXT2_NODUMP_FL}, +#endif +#ifdef UF_OPAQUE + { "noopaque", L"noopaque", UF_OPAQUE, 0 }, +#endif +#ifdef UF_NOUNLINK + { "nouunlnk", L"nouunlnk", UF_NOUNLINK, 0 }, + { "nouunlink", L"nouunlink", UF_NOUNLINK, 0 }, +#endif +#ifdef EXT2_COMPR_FL /* 'c' */ + { "nocompress", L"nocompress", EXT2_COMPR_FL, 0 }, +#endif + +#ifdef EXT2_NOATIME_FL /* 'A' */ + { "noatime", L"noatime", 0, EXT2_NOATIME_FL}, +#endif + { NULL, NULL, 0, 0 } +}; + +/* + * fflagstostr -- + * Convert file flags to a comma-separated string. If no flags + * are set, return the empty string. + */ +char * +ae_fflagstostr(unsigned long bitset, unsigned long bitclear) +{ + char *string, *dp; + const char *sp; + unsigned long bits; + struct flag *flag; + int length; + + bits = bitset | bitclear; + length = 0; + for (flag = flags; flag->name != NULL; flag++) + if (bits & (flag->set | flag->clear)) { + length += strlen(flag->name) + 1; + bits &= ~(flag->set | flag->clear); + } + + if (length == 0) + return (NULL); + string = malloc(length); + if (string == NULL) + return (NULL); + + dp = string; + for (flag = flags; flag->name != NULL; flag++) { + if (bitset & flag->set || bitclear & flag->clear) { + sp = flag->name + 2; + } else if (bitset & flag->clear || bitclear & flag->set) { + sp = flag->name; + } else + continue; + bitset &= ~(flag->set | flag->clear); + bitclear &= ~(flag->set | flag->clear); + if (dp > string) + *dp++ = ','; + while ((*dp++ = *sp++) != '\0') + ; + dp--; + } + + *dp = '\0'; + return (string); +} + +/* + * wcstofflags -- + * Take string of arguments and return file flags. This + * version works a little differently than strtofflags(3). + * In particular, it always tests every token, skipping any + * unrecognized tokens. It returns a pointer to the first + * unrecognized token, or NULL if every token was recognized. + * This version is also const-correct and does not modify the + * provided string. + */ +const wchar_t * +ae_wcstofflags(const wchar_t *s, unsigned long *setp, unsigned long *clrp) +{ + const wchar_t *start, *end; + struct flag *flag; + unsigned long set, clear; + const wchar_t *failed; + + set = clear = 0; + start = s; + failed = NULL; + /* Find start of first token. */ + while (*start == L'\t' || *start == L' ' || *start == L',') + start++; + while (*start != L'\0') { + /* Locate end of token. */ + end = start; + while (*end != L'\0' && *end != L'\t' && + *end != L' ' && *end != L',') + end++; + for (flag = flags; flag->wname != NULL; flag++) { + if (wmemcmp(start, flag->wname, end - start) == 0) { + /* Matched "noXXXX", so reverse the sense. */ + clear |= flag->set; + set |= flag->clear; + break; + } else if (wmemcmp(start, flag->wname + 2, end - start) + == 0) { + /* Matched "XXXX", so don't reverse. */ + set |= flag->set; + clear |= flag->clear; + break; + } + } + /* Ignore unknown flag names. */ + if (flag->wname == NULL && failed == NULL) + failed = start; + + /* Find start of next token. */ + start = end; + while (*start == L'\t' || *start == L' ' || *start == L',') + start++; + + } + + if (setp) + *setp = set; + if (clrp) + *clrp = clear; + + /* Return location of first failure. */ + return (failed); +} + + +#ifdef TEST +#include <stdio.h> +int +main(int argc, char **argv) +{ + struct archive_entry *entry = archive_entry_new(); + unsigned long set, clear; + const wchar_t *remainder; + + remainder = archive_entry_copy_fflags_text_w(entry, L"nosappnd dump archive,,,,,,,"); + archive_entry_fflags(entry, &set, &clear); + + wprintf(L"set=0x%lX clear=0x%lX remainder='%ls'\n", set, clear, remainder); + + wprintf(L"new flags='%s'\n", archive_entry_fflags_text(entry)); + return (0); +} +#endif |
