Exemple #1
0
int
lafe_include_from_file(struct lafe_matching **matching, const char *pathname,
    int nullSeparator)
{
	struct lafe_line_reader *lr;
	const char *p;
	int ret = 0;

	lr = lafe_line_reader(pathname, nullSeparator);
	while ((p = lafe_line_reader_next(lr)) != NULL) {
		if (lafe_include(matching, p) != 0)
			ret = -1;
	}
	lafe_line_reader_free(lr);
	return (ret);
}
Exemple #2
0
int
main(int argc, char **argv)
{
    struct bsdtar       *bsdtar, bsdtar_storage;
    int          opt, t;
    char             option_o;
    char             possible_help_request;
    char             buff[16];
    time_t           now;

    /*
     * Use a pointer for consistency, but stack-allocated storage
     * for ease of cleanup.
     */
    _bsdtar = bsdtar = &bsdtar_storage;
    memset(bsdtar, 0, sizeof(*bsdtar));
    bsdtar->fd = -1; /* Mark as "unused" */
    option_o = 0;

#if defined(SIGINFO) || defined(SIGUSR1)
    { /* Catch SIGINFO and SIGUSR1, if they exist. */
        struct sigaction sa;
        sa.sa_handler = siginfo_handler;
        sigemptyset(&sa.sa_mask);
        sa.sa_flags = 0;
#ifdef SIGINFO
        if (sigaction(SIGINFO, &sa, NULL))
            lafe_errc(1, errno, "sigaction(SIGINFO) failed");
#endif
#ifdef SIGUSR1
        /* ... and treat SIGUSR1 the same way as SIGINFO. */
        if (sigaction(SIGUSR1, &sa, NULL))
            lafe_errc(1, errno, "sigaction(SIGUSR1) failed");
#endif
    }
#endif


    /* Need lafe_progname before calling lafe_warnc. */
    if (*argv == NULL)
        lafe_progname = "bsdtar";
    else {
#if defined(_WIN32) && !defined(__CYGWIN__)
        lafe_progname = strrchr(*argv, '\\');
#else
        lafe_progname = strrchr(*argv, '/');
#endif
        if (lafe_progname != NULL)
            lafe_progname++;
        else
            lafe_progname = *argv;
    }

    time(&now);

#if HAVE_SETLOCALE
    if (setlocale(LC_ALL, "") == NULL)
        lafe_warnc(0, "Failed to set default locale");
#endif
#if defined(HAVE_NL_LANGINFO) && defined(HAVE_D_MD_ORDER)
    bsdtar->day_first = (*nl_langinfo(D_MD_ORDER) == 'd');
#endif
    possible_help_request = 0;

    /* Look up uid of current user for future reference */
    bsdtar->user_uid = geteuid();

    /* Default: open tape drive. */
    bsdtar->filename = getenv("TAPE");
    if (bsdtar->filename == NULL)
        bsdtar->filename = _PATH_DEFTAPE;

    /* Default: preserve mod time on extract */
    bsdtar->extract_flags = ARCHIVE_EXTRACT_TIME;

    /* Default: Perform basic security checks. */
    bsdtar->extract_flags |= SECURITY;

#ifndef _WIN32
    /* On POSIX systems, assume --same-owner and -p when run by
     * the root user.  This doesn't make any sense on Windows. */
    if (bsdtar->user_uid == 0) {
        /* --same-owner */
        bsdtar->extract_flags |= ARCHIVE_EXTRACT_OWNER;
        /* -p */
        bsdtar->extract_flags |= ARCHIVE_EXTRACT_PERM;
        bsdtar->extract_flags |= ARCHIVE_EXTRACT_ACL;
        bsdtar->extract_flags |= ARCHIVE_EXTRACT_XATTR;
        bsdtar->extract_flags |= ARCHIVE_EXTRACT_FFLAGS;
    }
#endif

    bsdtar->argv = argv;
    bsdtar->argc = argc;

    /*
     * Comments following each option indicate where that option
     * originated:  SUSv2, POSIX, GNU tar, star, etc.  If there's
     * no such comment, then I don't know of anyone else who
     * implements that option.
     */
    while ((opt = bsdtar_getopt(bsdtar)) != -1) {
        switch (opt) {
        case 'B': /* GNU tar */
            /* libarchive doesn't need this; just ignore it. */
            break;
        case 'b': /* SUSv2 */
            t = atoi(bsdtar->optarg);
            if (t <= 0 || t > 1024)
                lafe_errc(1, 0,
                    "Argument to -b is out of range (1..1024)");
            bsdtar->bytes_per_block = 512 * t;
            break;
        case 'C': /* GNU tar */
            set_chdir(bsdtar, bsdtar->optarg);
            break;
        case 'c': /* SUSv2 */
            set_mode(bsdtar, opt);
            break;
        case OPTION_CHECK_LINKS: /* GNU tar */
            bsdtar->option_warn_links = 1;
            break;
        case OPTION_CHROOT: /* NetBSD */
            bsdtar->option_chroot = 1;
            break;
        case OPTION_EXCLUDE: /* GNU tar */
            if (lafe_exclude(&bsdtar->matching, bsdtar->optarg))
                lafe_errc(1, 0,
                    "Couldn't exclude %s\n", bsdtar->optarg);
            break;
        case OPTION_FORMAT: /* GNU tar, others */
            bsdtar->create_format = bsdtar->optarg;
            break;
        case OPTION_OPTIONS:
            bsdtar->option_options = bsdtar->optarg;
            break;
        case 'f': /* SUSv2 */
            bsdtar->filename = bsdtar->optarg;
            if (strcmp(bsdtar->filename, "-") == 0)
                bsdtar->filename = NULL;
            break;
        case 'H': /* BSD convention */
            bsdtar->symlink_mode = 'H';
            break;
        case 'h': /* Linux Standards Base, gtar; synonym for -L */
            bsdtar->symlink_mode = 'L';
            /* Hack: -h by itself is the "help" command. */
            possible_help_request = 1;
            break;
        case OPTION_HELP: /* GNU tar, others */
            long_help();
            exit(0);
            break;
        case 'I': /* GNU tar */
            /*
             * TODO: Allow 'names' to come from an archive,
             * not just a text file.  Design a good UI for
             * allowing names and mode/owner to be read
             * from an archive, with contents coming from
             * disk.  This can be used to "refresh" an
             * archive or to design archives with special
             * permissions without having to create those
             * permissions on disk.
             */
            bsdtar->names_from_file = bsdtar->optarg;
            break;
        case OPTION_INCLUDE:
            /*
             * Noone else has the @archive extension, so
             * noone else needs this to filter entries
             * when transforming archives.
             */
            if (lafe_include(&bsdtar->matching, bsdtar->optarg))
                lafe_errc(1, 0,
                    "Failed to add %s to inclusion list",
                    bsdtar->optarg);
            break;
        case 'j': /* GNU tar */
            if (bsdtar->create_compression != '\0')
                lafe_errc(1, 0,
                    "Can't specify both -%c and -%c", opt,
                    bsdtar->create_compression);
            bsdtar->create_compression = opt;
            break;
        case 'J': /* GNU tar 1.21 and later */
            if (bsdtar->create_compression != '\0')
                lafe_errc(1, 0,
                    "Can't specify both -%c and -%c", opt,
                    bsdtar->create_compression);
            bsdtar->create_compression = opt;
            break;
        case 'k': /* GNU tar */
            bsdtar->extract_flags |= ARCHIVE_EXTRACT_NO_OVERWRITE;
            break;
        case OPTION_KEEP_NEWER_FILES: /* GNU tar */
            bsdtar->extract_flags |= ARCHIVE_EXTRACT_NO_OVERWRITE_NEWER;
            break;
        case 'L': /* BSD convention */
            bsdtar->symlink_mode = 'L';
            break;
            case 'l': /* SUSv2 and GNU tar beginning with 1.16 */
            /* GNU tar 1.13  used -l for --one-file-system */
            bsdtar->option_warn_links = 1;
            break;
        case OPTION_LZMA:
            if (bsdtar->create_compression != '\0')
                lafe_errc(1, 0,
                    "Can't specify both -%c and -%c", opt,
                    bsdtar->create_compression);
            bsdtar->create_compression = opt;
            break;
        case 'm': /* SUSv2 */
            bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_TIME;
            break;
        case 'n': /* GNU tar */
            bsdtar->option_no_subdirs = 1;
            break;
            /*
         * Selecting files by time:
         *    --newer-?time='date' Only files newer than 'date'
         *    --newer-?time-than='file' Only files newer than time
         *         on specified file (useful for incremental backups)
         * TODO: Add corresponding "older" options to reverse these.
         */
        case OPTION_NEWER_CTIME: /* GNU tar */
            bsdtar->newer_ctime_sec = get_date(now, bsdtar->optarg);
            break;
        case OPTION_NEWER_CTIME_THAN:
            {
                struct stat st;
                if (stat(bsdtar->optarg, &st) != 0)
                    lafe_errc(1, 0,
                        "Can't open file %s", bsdtar->optarg);
                bsdtar->newer_ctime_sec = st.st_ctime;
                bsdtar->newer_ctime_nsec =
                    ARCHIVE_STAT_CTIME_NANOS(&st);
            }
            break;
        case OPTION_NEWER_MTIME: /* GNU tar */
            bsdtar->newer_mtime_sec = get_date(now, bsdtar->optarg);
            break;
        case OPTION_NEWER_MTIME_THAN:
            {
                struct stat st;
                if (stat(bsdtar->optarg, &st) != 0)
                    lafe_errc(1, 0,
                        "Can't open file %s", bsdtar->optarg);
                bsdtar->newer_mtime_sec = st.st_mtime;
                bsdtar->newer_mtime_nsec =
                    ARCHIVE_STAT_MTIME_NANOS(&st);
            }
            break;
        case OPTION_NODUMP: /* star */
            bsdtar->option_honor_nodump = 1;
            break;
        case OPTION_NO_SAME_OWNER: /* GNU tar */
            bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_OWNER;
            break;
        case OPTION_NO_SAME_PERMISSIONS: /* GNU tar */
            bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_PERM;
            bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_ACL;
            bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_XATTR;
            bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_FFLAGS;
            break;
        case OPTION_NULL: /* GNU tar */
            bsdtar->option_null++;
            break;
        case OPTION_NUMERIC_OWNER: /* GNU tar */
            bsdtar->option_numeric_owner++;
            break;
        case 'O': /* GNU tar */
            bsdtar->option_stdout = 1;
            break;
        case 'o': /* SUSv2 and GNU conflict here, but not fatally */
            option_o = 1; /* Record it and resolve it later. */
            break;
        case OPTION_ONE_FILE_SYSTEM: /* GNU tar */
            bsdtar->option_dont_traverse_mounts = 1;
            break;
#if 0
        /*
         * The common BSD -P option is not necessary, since
         * our default is to archive symlinks, not follow
         * them.  This is convenient, as -P conflicts with GNU
         * tar anyway.
         */
        case 'P': /* BSD convention */
            /* Default behavior, no option necessary. */
            break;
#endif
        case 'P': /* GNU tar */
            bsdtar->extract_flags &= ~SECURITY;
            bsdtar->option_absolute_paths = 1;
            break;
        case 'p': /* GNU tar, star */
            bsdtar->extract_flags |= ARCHIVE_EXTRACT_PERM;
            bsdtar->extract_flags |= ARCHIVE_EXTRACT_ACL;
            bsdtar->extract_flags |= ARCHIVE_EXTRACT_XATTR;
            bsdtar->extract_flags |= ARCHIVE_EXTRACT_FFLAGS;
            break;
        case OPTION_POSIX: /* GNU tar */
            bsdtar->create_format = "pax";
            break;
        case 'q': /* FreeBSD GNU tar --fast-read, NetBSD -q */
            bsdtar->option_fast_read = 1;
            break;
        case 'r': /* SUSv2 */
            set_mode(bsdtar, opt);
            break;
        case 'S': /* NetBSD pax-as-tar */
            bsdtar->extract_flags |= ARCHIVE_EXTRACT_SPARSE;
            break;
        case 's': /* NetBSD pax-as-tar */
#if HAVE_REGEX_H
            add_substitution(bsdtar, bsdtar->optarg);
#else
            lafe_warnc(0,
                "-s is not supported by this version of bsdtar");
            usage();
#endif
            break;
        case OPTION_SAME_OWNER: /* GNU tar */
            bsdtar->extract_flags |= ARCHIVE_EXTRACT_OWNER;
            break;
        case OPTION_STRIP_COMPONENTS: /* GNU tar 1.15 */
            bsdtar->strip_components = atoi(bsdtar->optarg);
            break;
        case 'T': /* GNU tar */
            bsdtar->names_from_file = bsdtar->optarg;
            break;
        case 't': /* SUSv2 */
            set_mode(bsdtar, opt);
            bsdtar->verbose++;
            break;
        case OPTION_TOTALS: /* GNU tar */
            bsdtar->option_totals++;
            break;
        case 'U': /* GNU tar */
            bsdtar->extract_flags |= ARCHIVE_EXTRACT_UNLINK;
            bsdtar->option_unlink_first = 1;
            break;
        case 'u': /* SUSv2 */
            set_mode(bsdtar, opt);
            break;
        case 'v': /* SUSv2 */
            bsdtar->verbose++;
            break;
        case OPTION_VERSION: /* GNU convention */
            version();
            break;
#if 0
        /*
         * The -W longopt feature is handled inside of
         * bsdtar_getopt(), so -W is not available here.
         */
        case 'W': /* Obscure GNU convention. */
            break;
#endif
        case 'w': /* SUSv2 */
            bsdtar->option_interactive = 1;
            break;
        case 'X': /* GNU tar */
            if (lafe_exclude_from_file(&bsdtar->matching, bsdtar->optarg))
                lafe_errc(1, 0,
                    "failed to process exclusions from file %s",
                    bsdtar->optarg);
            break;
        case 'x': /* SUSv2 */
            set_mode(bsdtar, opt);
            break;
        case 'y': /* FreeBSD version of GNU tar */
            if (bsdtar->create_compression != '\0')
                lafe_errc(1, 0,
                    "Can't specify both -%c and -%c", opt,
                    bsdtar->create_compression);
            bsdtar->create_compression = opt;
            break;
        case 'Z': /* GNU tar */
            if (bsdtar->create_compression != '\0')
                lafe_errc(1, 0,
                    "Can't specify both -%c and -%c", opt,
                    bsdtar->create_compression);
            bsdtar->create_compression = opt;
            break;
        case 'z': /* GNU tar, star, many others */
            if (bsdtar->create_compression != '\0')
                lafe_errc(1, 0,
                    "Can't specify both -%c and -%c", opt,
                    bsdtar->create_compression);
            bsdtar->create_compression = opt;
            break;
        case OPTION_USE_COMPRESS_PROGRAM:
            bsdtar->compress_program = bsdtar->optarg;
            break;
        default:
            usage();
        }
    }

    /*
     * Sanity-check options.
     */

    /* If no "real" mode was specified, treat -h as --help. */
    if ((bsdtar->mode == '\0') && possible_help_request) {
        long_help();
        exit(0);
    }

    /* Otherwise, a mode is required. */
    if (bsdtar->mode == '\0')
        lafe_errc(1, 0,
            "Must specify one of -c, -r, -t, -u, -x");

    /* Check boolean options only permitted in certain modes. */
    if (bsdtar->option_dont_traverse_mounts)
        only_mode(bsdtar, "--one-file-system", "cru");
    if (bsdtar->option_fast_read)
        only_mode(bsdtar, "--fast-read", "xt");
    if (bsdtar->option_honor_nodump)
        only_mode(bsdtar, "--nodump", "cru");
    if (option_o > 0) {
        switch (bsdtar->mode) {
        case 'c':
            /*
             * In GNU tar, -o means "old format."  The
             * "ustar" format is the closest thing
             * supported by libarchive.
             */
            bsdtar->create_format = "ustar";
            /* TODO: bsdtar->create_format = "v7"; */
            break;
        case 'x':
            /* POSIX-compatible behavior. */
            bsdtar->option_no_owner = 1;
            bsdtar->extract_flags &= ~ARCHIVE_EXTRACT_OWNER;
            break;
        default:
            only_mode(bsdtar, "-o", "xc");
            break;
        }
    }
    if (bsdtar->option_no_subdirs)
        only_mode(bsdtar, "-n", "cru");
    if (bsdtar->option_stdout)
        only_mode(bsdtar, "-O", "xt");
    if (bsdtar->option_unlink_first)
        only_mode(bsdtar, "-U", "x");
    if (bsdtar->option_warn_links)
        only_mode(bsdtar, "--check-links", "cr");

    /* Check other parameters only permitted in certain modes. */
    if (bsdtar->create_compression != '\0') {
        strcpy(buff, "-?");
        buff[1] = bsdtar->create_compression;
        only_mode(bsdtar, buff, "cxt");
    }
    if (bsdtar->create_format != NULL)
        only_mode(bsdtar, "--format", "cru");
    if (bsdtar->symlink_mode != '\0') {
        strcpy(buff, "-?");
        buff[1] = bsdtar->symlink_mode;
        only_mode(bsdtar, buff, "cru");
    }
    if (bsdtar->strip_components != 0)
        only_mode(bsdtar, "--strip-components", "xt");

    switch(bsdtar->mode) {
    case 'c':
        tar_mode_c(bsdtar);
        break;
    case 'r':
        tar_mode_r(bsdtar);
        break;
    case 't':
        tar_mode_t(bsdtar);
        break;
    case 'u':
        tar_mode_u(bsdtar);
        break;
    case 'x':
        tar_mode_x(bsdtar);
        break;
    }

    lafe_cleanup_exclusions(&bsdtar->matching);
#if HAVE_REGEX_H
    cleanup_substitution(bsdtar);
#endif

    if (bsdtar->return_value != 0)
        lafe_warnc(0,
            "Error exit delayed from previous errors.");
    return (bsdtar->return_value);
}
Exemple #3
0
int
main(int argc, char *argv[])
{
	static char buff[16384];
	struct cpio _cpio; /* Allocated on stack. */
	struct cpio *cpio;
	const char *errmsg;
	int uid, gid;
	int opt;

	cpio = &_cpio;
	memset(cpio, 0, sizeof(*cpio));
	cpio->buff = buff;
	cpio->buff_size = sizeof(buff);

	/* Need lafe_progname before calling lafe_warnc. */
	if (*argv == NULL)
		lafe_progname = "bsdcpio";
	else {
#if defined(_WIN32) && !defined(__CYGWIN__)
		lafe_progname = strrchr(*argv, '\\');
#else
		lafe_progname = strrchr(*argv, '/');
#endif
		if (lafe_progname != NULL)
			lafe_progname++;
		else
			lafe_progname = *argv;
	}

	cpio->uid_override = -1;
	cpio->gid_override = -1;
	cpio->argv = argv;
	cpio->argc = argc;
	cpio->mode = '\0';
	cpio->verbose = 0;
	cpio->compress = '\0';
	cpio->extract_flags = ARCHIVE_EXTRACT_NO_AUTODIR;
	cpio->extract_flags |= ARCHIVE_EXTRACT_NO_OVERWRITE_NEWER;
	cpio->extract_flags |= ARCHIVE_EXTRACT_SECURE_SYMLINKS;
	cpio->extract_flags |= ARCHIVE_EXTRACT_SECURE_NODOTDOT;
	cpio->extract_flags |= ARCHIVE_EXTRACT_PERM;
	cpio->extract_flags |= ARCHIVE_EXTRACT_FFLAGS;
	cpio->extract_flags |= ARCHIVE_EXTRACT_ACL;
#if !defined(_WIN32) && !defined(__CYGWIN__)
	if (geteuid() == 0)
		cpio->extract_flags |= ARCHIVE_EXTRACT_OWNER;
#endif
	cpio->bytes_per_block = 512;
	cpio->filename = NULL;

	while ((opt = cpio_getopt(cpio)) != -1) {
		switch (opt) {
		case '0': /* GNU convention: --null, -0 */
			cpio->option_null = 1;
			break;
		case 'A': /* NetBSD/OpenBSD */
			cpio->option_append = 1;
			break;
		case 'a': /* POSIX 1997 */
			cpio->option_atime_restore = 1;
			break;
		case 'B': /* POSIX 1997 */
			cpio->bytes_per_block = 5120;
			break;
		case 'C': /* NetBSD/OpenBSD */
			cpio->bytes_per_block = atoi(cpio->optarg);
			if (cpio->bytes_per_block <= 0)
				lafe_errc(1, 0, "Invalid blocksize %s", cpio->optarg);
			break;
		case 'c': /* POSIX 1997 */
			cpio->format = "odc";
			break;
		case 'd': /* POSIX 1997 */
			cpio->extract_flags &= ~ARCHIVE_EXTRACT_NO_AUTODIR;
			break;
		case 'E': /* NetBSD/OpenBSD */
			lafe_include_from_file(&cpio->matching,
			    cpio->optarg, cpio->option_null);
			break;
		case 'F': /* NetBSD/OpenBSD/GNU cpio */
			cpio->filename = cpio->optarg;
			break;
		case 'f': /* POSIX 1997 */
			lafe_exclude(&cpio->matching, cpio->optarg);
			break;
		case 'H': /* GNU cpio (also --format) */
			cpio->format = cpio->optarg;
			break;
		case 'h':
			long_help();
			break;
		case 'I': /* NetBSD/OpenBSD */
			cpio->filename = cpio->optarg;
			break;
		case 'i': /* POSIX 1997 */
			if (cpio->mode != '\0')
				lafe_errc(1, 0,
				    "Cannot use both -i and -%c", cpio->mode);
			cpio->mode = opt;
			break;
		case 'J': /* GNU tar, others */
			cpio->compress = opt;
			break;
		case 'j': /* GNU tar, others */
			cpio->compress = opt;
			break;
		case OPTION_INSECURE:
			cpio->extract_flags &= ~ARCHIVE_EXTRACT_SECURE_SYMLINKS;
			cpio->extract_flags &= ~ARCHIVE_EXTRACT_SECURE_NODOTDOT;
			break;
		case 'L': /* GNU cpio */
			cpio->option_follow_links = 1;
			break;
		case 'l': /* POSIX 1997 */
			cpio->option_link = 1;
			break;
		case OPTION_LZMA: /* GNU tar, others */
			cpio->compress = opt;
			break;
		case 'm': /* POSIX 1997 */
			cpio->extract_flags |= ARCHIVE_EXTRACT_TIME;
			break;
		case 'n': /* GNU cpio */
			cpio->option_numeric_uid_gid = 1;
			break;
		case OPTION_NO_PRESERVE_OWNER: /* GNU cpio */
			cpio->extract_flags &= ~ARCHIVE_EXTRACT_OWNER;
			break;
		case 'O': /* GNU cpio */
			cpio->filename = cpio->optarg;
			break;
		case 'o': /* POSIX 1997 */
			if (cpio->mode != '\0')
				lafe_errc(1, 0,
				    "Cannot use both -o and -%c", cpio->mode);
			cpio->mode = opt;
			break;
		case 'p': /* POSIX 1997 */
			if (cpio->mode != '\0')
				lafe_errc(1, 0,
				    "Cannot use both -p and -%c", cpio->mode);
			cpio->mode = opt;
			cpio->extract_flags &= ~ARCHIVE_EXTRACT_SECURE_NODOTDOT;
			break;
		case OPTION_PRESERVE_OWNER:
			cpio->extract_flags |= ARCHIVE_EXTRACT_OWNER;
			break;
		case OPTION_QUIET: /* GNU cpio */
			cpio->quiet = 1;
			break;
		case 'R': /* GNU cpio, also --owner */
			errmsg = owner_parse(cpio->optarg, &uid, &gid);
			if (errmsg) {
				lafe_warnc(-1, "%s", errmsg);
				usage();
			}
			if (uid != -1)
				cpio->uid_override = uid;
			if (gid != -1)
				cpio->gid_override = gid;
			break;
		case 'r': /* POSIX 1997 */
			cpio->option_rename = 1;
			break;
		case 't': /* POSIX 1997 */
			cpio->option_list = 1;
			break;
		case 'u': /* POSIX 1997 */
			cpio->extract_flags
			    &= ~ARCHIVE_EXTRACT_NO_OVERWRITE_NEWER;
			break;
		case 'v': /* POSIX 1997 */
			cpio->verbose++;
			break;
		case OPTION_VERSION: /* GNU convention */
			version();
			break;
#if 0
	        /*
		 * cpio_getopt() handles -W specially, so it's not
		 * available here.
		 */
		case 'W': /* Obscure, but useful GNU convention. */
			break;
#endif
		case 'y': /* tar convention */
			cpio->compress = opt;
			break;
		case 'Z': /* tar convention */
			cpio->compress = opt;
			break;
		case 'z': /* tar convention */
			cpio->compress = opt;
			break;
		default:
			usage();
		}
	}

	/*
	 * Sanity-check args, error out on nonsensical combinations.
	 */
	/* -t implies -i if no mode was specified. */
	if (cpio->option_list && cpio->mode == '\0')
		cpio->mode = 'i';
	/* -t requires -i */
	if (cpio->option_list && cpio->mode != 'i')
		lafe_errc(1, 0, "Option -t requires -i");
	/* -n requires -it */
	if (cpio->option_numeric_uid_gid && !cpio->option_list)
		lafe_errc(1, 0, "Option -n requires -it");
	/* Can only specify format when writing */
	if (cpio->format != NULL && cpio->mode != 'o')
		lafe_errc(1, 0, "Option --format requires -o");
	/* -l requires -p */
	if (cpio->option_link && cpio->mode != 'p')
		lafe_errc(1, 0, "Option -l requires -p");
	/* TODO: Flag other nonsensical combinations. */

	switch (cpio->mode) {
	case 'o':
		/* TODO: Implement old binary format in libarchive,
		   use that here. */
		if (cpio->format == NULL)
			cpio->format = "odc"; /* Default format */

		mode_out(cpio);
		break;
	case 'i':
		while (*cpio->argv != NULL) {
			lafe_include(&cpio->matching, *cpio->argv);
			--cpio->argc;
			++cpio->argv;
		}
		if (cpio->option_list)
			mode_list(cpio);
		else
			mode_in(cpio);
		break;
	case 'p':
		if (*cpio->argv == NULL || **cpio->argv == '\0')
			lafe_errc(1, 0,
			    "-p mode requires a target directory");
		mode_pass(cpio, *cpio->argv);
		break;
	default:
		lafe_errc(1, 0,
		    "Must specify at least one of -i, -o, or -p");
	}

	free_cache(cpio->gname_cache);
	free_cache(cpio->uname_cache);
	return (cpio->return_value);
}
Exemple #4
0
/*
 * Handle 'x' and 't' modes.
 */
static void
read_archive(struct bsdtar *bsdtar, char mode)
{
	struct progress_data	progress_data;
	FILE			 *out;
	struct archive		 *a;
	struct archive_entry	 *entry;
	const struct stat	 *st;
	int			  r;

	while (*bsdtar->argv) {
		lafe_include(&bsdtar->matching, *bsdtar->argv);
		bsdtar->argv++;
	}

	if (bsdtar->names_from_file != NULL)
		lafe_include_from_file(&bsdtar->matching,
		    bsdtar->names_from_file, bsdtar->option_null);

	a = archive_read_new();
	if (bsdtar->compress_program != NULL)
		archive_read_support_compression_program(a, bsdtar->compress_program);
	else
		archive_read_support_compression_all(a);
	archive_read_support_format_all(a);
	if (ARCHIVE_OK != archive_read_set_options(a, bsdtar->option_options))
		lafe_errc(1, 0, "%s", archive_error_string(a));
	if (archive_read_open_file(a, bsdtar->filename,
	    bsdtar->bytes_per_block != 0 ? bsdtar->bytes_per_block :
	    DEFAULT_BYTES_PER_BLOCK))
		lafe_errc(1, 0, "Error opening archive: %s",
		    archive_error_string(a));

	do_chdir(bsdtar);

	if (mode == 'x') {
		/* Set an extract callback so that we can handle SIGINFO. */
		progress_data.bsdtar = bsdtar;
		progress_data.archive = a;
		archive_read_extract_set_progress_callback(a, progress_func,
		    &progress_data);
	}

	if (mode == 'x' && bsdtar->option_chroot) {
#if HAVE_CHROOT
		if (chroot(".") != 0)
			lafe_errc(1, errno, "Can't chroot to \".\"");
#else
		lafe_errc(1, 0,
		    "chroot isn't supported on this platform");
#endif
	}

	for (;;) {
		/* Support --fast-read option */
		if (bsdtar->option_fast_read &&
		    lafe_unmatched_inclusions(bsdtar->matching) == 0)
			break;

		r = archive_read_next_header(a, &entry);
		progress_data.entry = entry;
		if (r == ARCHIVE_EOF)
			break;
		if (r < ARCHIVE_OK)
			lafe_warnc(0, "%s", archive_error_string(a));
		if (r <= ARCHIVE_WARN)
			bsdtar->return_value = 1;
		if (r == ARCHIVE_RETRY) {
			/* Retryable error: try again */
			lafe_warnc(0, "Retrying...");
			continue;
		}
		if (r == ARCHIVE_FATAL)
			break;

		if (bsdtar->uid >= 0) {
			archive_entry_set_uid(entry, bsdtar->uid);
			archive_entry_set_uname(entry, NULL);
		}
		if (bsdtar->gid >= 0) {
			archive_entry_set_gid(entry, bsdtar->gid);
			archive_entry_set_gname(entry, NULL);
		}
		if (bsdtar->uname)
			archive_entry_set_uname(entry, bsdtar->uname);
		if (bsdtar->gname)
			archive_entry_set_gname(entry, bsdtar->gname);

		/*
		 * Exclude entries that are too old.
		 */
		st = archive_entry_stat(entry);
		if (bsdtar->newer_ctime_sec > 0) {
			if (st->st_ctime < bsdtar->newer_ctime_sec)
				continue; /* Too old, skip it. */
			if (st->st_ctime == bsdtar->newer_ctime_sec
			    && ARCHIVE_STAT_CTIME_NANOS(st)
			    <= bsdtar->newer_ctime_nsec)
				continue; /* Too old, skip it. */
		}
		if (bsdtar->newer_mtime_sec > 0) {
			if (st->st_mtime < bsdtar->newer_mtime_sec)
				continue; /* Too old, skip it. */
			if (st->st_mtime == bsdtar->newer_mtime_sec
			    && ARCHIVE_STAT_MTIME_NANOS(st)
			    <= bsdtar->newer_mtime_nsec)
				continue; /* Too old, skip it. */
		}

		/*
		 * Note that pattern exclusions are checked before
		 * pathname rewrites are handled.  This gives more
		 * control over exclusions, since rewrites always lose
		 * information.  (For example, consider a rewrite
		 * s/foo[0-9]/foo/.  If we check exclusions after the
		 * rewrite, there would be no way to exclude foo1/bar
		 * while allowing foo2/bar.)
		 */
		if (lafe_excluded(bsdtar->matching, archive_entry_pathname(entry)))
			continue; /* Excluded by a pattern test. */

		if (mode == 't') {
			/* Perversely, gtar uses -O to mean "send to stderr"
			 * when used with -t. */
			out = bsdtar->option_stdout ? stderr : stdout;

			/*
			 * TODO: Provide some reasonable way to
			 * preview rewrites.  gtar always displays
			 * the unedited path in -t output, which means
			 * you cannot easily preview rewrites.
			 */
			if (bsdtar->verbose < 2)
				safe_fprintf(out, "%s",
				    archive_entry_pathname(entry));
			else
				list_item_verbose(bsdtar, out, entry);
			fflush(out);
			r = archive_read_data_skip(a);
			if (r == ARCHIVE_WARN) {
				fprintf(out, "\n");
				lafe_warnc(0, "%s",
				    archive_error_string(a));
			}
			if (r == ARCHIVE_RETRY) {
				fprintf(out, "\n");
				lafe_warnc(0, "%s",
				    archive_error_string(a));
			}
			if (r == ARCHIVE_FATAL) {
				fprintf(out, "\n");
				lafe_warnc(0, "%s",
				    archive_error_string(a));
				bsdtar->return_value = 1;
				break;
			}
			fprintf(out, "\n");
		} else {
			/* Note: some rewrite failures prevent extraction. */
			if (edit_pathname(bsdtar, entry))
				continue; /* Excluded by a rewrite failure. */

			if (bsdtar->option_interactive &&
			    !yes("extract '%s'", archive_entry_pathname(entry)))
				continue;

			/*
			 * Format here is from SUSv2, including the
			 * deferred '\n'.
			 */
			if (bsdtar->verbose) {
				safe_fprintf(stderr, "x %s",
				    archive_entry_pathname(entry));
				fflush(stderr);
			}

			// TODO siginfo_printinfo(bsdtar, 0);

			if (bsdtar->option_stdout)
				r = archive_read_data_into_fd(a, 1);
			else
				r = archive_read_extract(a, entry,
				    bsdtar->extract_flags);
			if (r != ARCHIVE_OK) {
				if (!bsdtar->verbose)
					safe_fprintf(stderr, "%s",
					    archive_entry_pathname(entry));
				safe_fprintf(stderr, ": %s",
				    archive_error_string(a));
				if (!bsdtar->verbose)
					fprintf(stderr, "\n");
				bsdtar->return_value = 1;
			}
			if (bsdtar->verbose)
				fprintf(stderr, "\n");
			if (r == ARCHIVE_FATAL)
				break;
		}
	}


	r = archive_read_close(a);
	if (r != ARCHIVE_OK)
		lafe_warnc(0, "%s", archive_error_string(a));
	if (r <= ARCHIVE_WARN)
		bsdtar->return_value = 1;

	if (bsdtar->verbose > 2)
		fprintf(stdout, "Archive Format: %s,  Compression: %s\n",
		    archive_format_name(a), archive_compression_name(a));

	archive_read_finish(a);
}