Exemple #1
0
static void
report_write(struct bsdtar *bsdtar, struct archive *a,
    struct archive_entry *entry, int64_t progress)
{
	uint64_t comp, uncomp;
	int compression;

	if (bsdtar->verbose)
		fprintf(stderr, "\n");
	comp = archive_filter_bytes(a, -1);
	uncomp = archive_filter_bytes(a, 0);
	fprintf(stderr, "In: %d files, %s bytes;",
	    archive_file_count(a), tar_i64toa(uncomp));
	if (comp > uncomp)
		compression = 0;
	else
		compression = (int)((uncomp - comp) * 100 / uncomp);
	fprintf(stderr,
	    " Out: %s bytes, compression %d%%\n",
	    tar_i64toa(comp), compression);
	/* Can't have two calls to tar_i64toa() pending, so split the output. */
	safe_fprintf(stderr, "Current: %s (%s",
	    archive_entry_pathname(entry),
	    tar_i64toa(progress));
	fprintf(stderr, "/%s bytes)\n",
	    tar_i64toa(archive_entry_size(entry)));
}
Exemple #2
0
static void
progress_func(void *cookie)
{
	struct progress_data *progress_data = cookie;
	struct bsdtar *bsdtar = progress_data->bsdtar;
	struct archive *a = progress_data->archive;
	struct archive_entry *entry = progress_data->entry;
	uint64_t comp, uncomp;
	int compression;

	if (!need_report())
		return;

	if (bsdtar->verbose)
		fprintf(stderr, "\n");
	if (a != NULL) {
		comp = archive_position_compressed(a);
		uncomp = archive_position_uncompressed(a);
		if (comp > uncomp)
			compression = 0;
		else
			compression = (int)((uncomp - comp) * 100 / uncomp);
		fprintf(stderr,
		    "In: %s bytes, compression %d%%;",
		    tar_i64toa(comp), compression);
		fprintf(stderr, "  Out: %d files, %s bytes\n",
		    archive_file_count(a), tar_i64toa(uncomp));
	}
	if (entry != NULL) {
		safe_fprintf(stderr, "Current: %s",
		    archive_entry_pathname(entry));
		fprintf(stderr, " (%s bytes)\n",
		    tar_i64toa(archive_entry_size(entry)));
	}
}
Exemple #3
0
/*-
 * The logic here for -C <dir> attempts to avoid
 * chdir() as long as possible.  For example:
 * "-C /foo -C /bar file"          needs chdir("/bar") but not chdir("/foo")
 * "-C /foo -C bar file"           needs chdir("/foo/bar")
 * "-C /foo -C bar /file1"         does not need chdir()
 * "-C /foo -C bar /file1 file2"   needs chdir("/foo/bar") before file2
 *
 * The only correct way to handle this is to record a "pending" chdir
 * request and combine multiple requests intelligently until we
 * need to process a non-absolute file.  set_chdir() adds the new dir
 * to the pending list; do_chdir() actually executes any pending chdir.
 *
 * This way, programs that build tar command lines don't have to worry
 * about -C with non-existent directories; such requests will only
 * fail if the directory must be accessed.
 *
 */
void
set_chdir(struct bsdtar *bsdtar, const char *newdir)
{
#if defined(_WIN32) && !defined(__CYGWIN__)
	if (newdir[0] == '/' || newdir[0] == '\\' ||
	    /* Detect this type, for example, "C:\" or "C:/" */
	    (((newdir[0] >= 'a' && newdir[0] <= 'z') ||
	      (newdir[0] >= 'A' && newdir[0] <= 'Z')) &&
	    newdir[1] == ':' && (newdir[2] == '/' || newdir[2] == '\\'))) {
#else
	if (newdir[0] == '/') {
#endif
		/* The -C /foo -C /bar case; dump first one. */
		free(bsdtar->pending_chdir);
		bsdtar->pending_chdir = NULL;
	}
	if (bsdtar->pending_chdir == NULL)
		/* Easy case: no previously-saved dir. */
		bsdtar->pending_chdir = strdup(newdir);
	else {
		/* The -C /foo -C bar case; concatenate */
		char *old_pending = bsdtar->pending_chdir;
		size_t old_len = strlen(old_pending);
		bsdtar->pending_chdir = malloc(old_len + strlen(newdir) + 2);
		if (old_pending[old_len - 1] == '/')
			old_pending[old_len - 1] = '\0';
		if (bsdtar->pending_chdir != NULL)
			sprintf(bsdtar->pending_chdir, "%s/%s",
			    old_pending, newdir);
		free(old_pending);
	}
	if (bsdtar->pending_chdir == NULL)
		lafe_errc(1, errno, "No memory");
}

void
do_chdir(struct bsdtar *bsdtar)
{
	if (bsdtar->pending_chdir == NULL)
		return;

	if (chdir(bsdtar->pending_chdir) != 0) {
		lafe_errc(1, 0, "could not chdir to '%s'\n",
		    bsdtar->pending_chdir);
	}
	free(bsdtar->pending_chdir);
	bsdtar->pending_chdir = NULL;
}

static const char *
strip_components(const char *p, int elements)
{
	/* Skip as many elements as necessary. */
	while (elements > 0) {
		switch (*p++) {
		case '/':
#if defined(_WIN32) && !defined(__CYGWIN__)
		case '\\': /* Support \ path sep on Windows ONLY. */
#endif
			elements--;
			break;
		case '\0':
			/* Path is too short, skip it. */
			return (NULL);
		}
	}

	/* Skip any / characters.  This handles short paths that have
	 * additional / termination.  This also handles the case where
	 * the logic above stops in the middle of a duplicate //
	 * sequence (which would otherwise get converted to an
	 * absolute path). */
	for (;;) {
		switch (*p) {
		case '/':
#if defined(_WIN32) && !defined(__CYGWIN__)
		case '\\': /* Support \ path sep on Windows ONLY. */
#endif
			++p;
			break;
		case '\0':
			return (NULL);
		default:
			return (p);
		}
	}
}

static void
warn_strip_leading_char(struct bsdtar *bsdtar, const char *c)
{
	if (!bsdtar->warned_lead_slash) {
		lafe_warnc(0,
			   "Removing leading '%c' from member names",
			   c[0]);
		bsdtar->warned_lead_slash = 1;
	}
}

static void
warn_strip_drive_letter(struct bsdtar *bsdtar)
{
	if (!bsdtar->warned_lead_slash) {
		lafe_warnc(0,
			   "Removing leading drive letter from "
			   "member names");
		bsdtar->warned_lead_slash = 1;
	}
}

/*
 * Convert absolute path to non-absolute path by skipping leading
 * absolute path prefixes.
 */
static const char*
strip_absolute_path(struct bsdtar *bsdtar, const char *p)
{
	const char *rp;

	/* Remove leading "//./" or "//?/" or "//?/UNC/"
	 * (absolute path prefixes used by Windows API) */
	if ((p[0] == '/' || p[0] == '\\') &&
	    (p[1] == '/' || p[1] == '\\') &&
	    (p[2] == '.' || p[2] == '?') &&
	    (p[3] == '/' || p[3] == '\\'))
	{
		if (p[2] == '?' &&
		    (p[4] == 'U' || p[4] == 'u') &&
		    (p[5] == 'N' || p[5] == 'n') &&
		    (p[6] == 'C' || p[6] == 'c') &&
		    (p[7] == '/' || p[7] == '\\'))
			p += 8;
		else
			p += 4;
		warn_strip_drive_letter(bsdtar);
	}

	/* Remove multiple leading slashes and Windows drive letters. */
	do {
		rp = p;
		if (((p[0] >= 'a' && p[0] <= 'z') ||
		     (p[0] >= 'A' && p[0] <= 'Z')) &&
		    p[1] == ':') {
			p += 2;
			warn_strip_drive_letter(bsdtar);
		}

		/* Remove leading "/../", "/./", "//", etc. */
		while (p[0] == '/' || p[0] == '\\') {
			if (p[1] == '.' &&
			    p[2] == '.' &&
			    (p[3] == '/' || p[3] == '\\')) {
				p += 3; /* Remove "/..", leave "/" for next pass. */
			} else if (p[1] == '.' &&
				   (p[2] == '/' || p[2] == '\\')) {
				p += 2; /* Remove "/.", leave "/" for next pass. */
			} else
				p += 1; /* Remove "/". */
			warn_strip_leading_char(bsdtar, rp);
		}
	} while (rp != p);

	return (p);
}

/*
 * Handle --strip-components and any future path-rewriting options.
 * Returns non-zero if the pathname should not be extracted.
 *
 * Note: The rewrites are applied uniformly to pathnames and hardlink
 * names but not to symlink bodies.  This is deliberate: Symlink
 * bodies are not necessarily filenames.  Even when they are, they
 * need to be interpreted relative to the directory containing them,
 * so simple rewrites like this are rarely appropriate.
 *
 * TODO: Support pax-style regex path rewrites.
 */
int
edit_pathname(struct bsdtar *bsdtar, struct archive_entry *entry)
{
	const char *name = archive_entry_pathname(entry);
	const char *original_name = name;
	const char *hardlinkname = archive_entry_hardlink(entry);
	const char *original_hardlinkname = hardlinkname;
#if defined(HAVE_REGEX_H) || defined(HAVE_PCREPOSIX_H)
	char *subst_name;
	int r;

	/* Apply user-specified substitution to pathname. */
	r = apply_substitution(bsdtar, name, &subst_name, 0, 0);
	if (r == -1) {
		lafe_warnc(0, "Invalid substitution, skipping entry");
		return 1;
	}
	if (r == 1) {
		archive_entry_copy_pathname(entry, subst_name);
		if (*subst_name == '\0') {
			free(subst_name);
			return -1;
		} else
			free(subst_name);
		name = archive_entry_pathname(entry);
		original_name = name;
	}

	/* Apply user-specified substitution to hardlink target. */
	if (hardlinkname != NULL) {
		r = apply_substitution(bsdtar, hardlinkname, &subst_name, 0, 1);
		if (r == -1) {
			lafe_warnc(0, "Invalid substitution, skipping entry");
			return 1;
		}
		if (r == 1) {
			archive_entry_copy_hardlink(entry, subst_name);
			free(subst_name);
		}
		hardlinkname = archive_entry_hardlink(entry);
		original_hardlinkname = hardlinkname;
	}

	/* Apply user-specified substitution to symlink body. */
	if (archive_entry_symlink(entry) != NULL) {
		r = apply_substitution(bsdtar, archive_entry_symlink(entry), &subst_name, 1, 0);
		if (r == -1) {
			lafe_warnc(0, "Invalid substitution, skipping entry");
			return 1;
		}
		if (r == 1) {
			archive_entry_copy_symlink(entry, subst_name);
			free(subst_name);
		}
	}
#endif

	/* Strip leading dir names as per --strip-components option. */
	if (bsdtar->strip_components > 0) {
		name = strip_components(name, bsdtar->strip_components);
		if (name == NULL)
			return (1);

		if (hardlinkname != NULL) {
			hardlinkname = strip_components(hardlinkname,
			    bsdtar->strip_components);
			if (hardlinkname == NULL)
				return (1);
		}
	}

	if (!bsdtar->option_absolute_paths) {
		/* By default, don't write or restore absolute pathnames. */
		name = strip_absolute_path(bsdtar, name);
		if (*name == '\0')
			name = ".";

		if (hardlinkname != NULL) {
			hardlinkname = strip_absolute_path(bsdtar, hardlinkname);
			if (*hardlinkname == '\0')
				return (1);
		}
	} else {
		/* Strip redundant leading '/' characters. */
		while (name[0] == '/' && name[1] == '/')
			name++;
	}

	/* Replace name in archive_entry. */
	if (name != original_name) {
		archive_entry_copy_pathname(entry, name);
	}
	if (hardlinkname != original_hardlinkname) {
		archive_entry_copy_hardlink(entry, hardlinkname);
	}
	return (0);
}

/*
 * It would be nice to just use printf() for formatting large numbers,
 * but the compatibility problems are quite a headache.  Hence the
 * following simple utility function.
 */
const char *
tar_i64toa(int64_t n0)
{
	static char buff[24];
	uint64_t n = n0 < 0 ? -n0 : n0;
	char *p = buff + sizeof(buff);

	*--p = '\0';
	do {
		*--p = '0' + (int)(n % 10);
	} while (n /= 10);
	if (n0 < 0)
		*--p = '-';
	return p;
}

/*
 * Like strcmp(), but try to be a little more aware of the fact that
 * we're comparing two paths.  Right now, it just handles leading
 * "./" and trailing '/' specially, so that "a/b/" == "./a/b"
 *
 * TODO: Make this better, so that "./a//b/./c/" == "a/b/c"
 * TODO: After this works, push it down into libarchive.
 * TODO: Publish the path normalization routines in libarchive so
 * that bsdtar can normalize paths and use fast strcmp() instead
 * of this.
 *
 * Note: This is currently only used within write.c, so should
 * not handle \ path separators.
 */

int
pathcmp(const char *a, const char *b)
{
	/* Skip leading './' */
	if (a[0] == '.' && a[1] == '/' && a[2] != '\0')
		a += 2;
	if (b[0] == '.' && b[1] == '/' && b[2] != '\0')
		b += 2;
	/* Find the first difference, or return (0) if none. */
	while (*a == *b) {
		if (*a == '\0')
			return (0);
		a++;
		b++;
	}
	/*
	 * If one ends in '/' and the other one doesn't,
	 * they're the same.
	 */
	if (a[0] == '/' && a[1] == '\0' && b[0] == '\0')
		return (0);
	if (a[0] == '\0' && b[0] == '/' && b[1] == '\0')
		return (0);
	/* They're really different, return the correct sign. */
	return (*(const unsigned char *)a - *(const unsigned char *)b);
}

#define PPBUFF_SIZE 1024
const char *
passphrase_callback(struct archive *a, void *_client_data)
{
	struct bsdtar *bsdtar = (struct bsdtar *)_client_data;
	(void)a; /* UNUSED */

	if (bsdtar->ppbuff == NULL) {
		bsdtar->ppbuff = malloc(PPBUFF_SIZE);
		if (bsdtar->ppbuff == NULL)
			lafe_errc(1, errno, "Out of memory");
	}
	return lafe_readpassphrase("Enter passphrase:",
		bsdtar->ppbuff, PPBUFF_SIZE);
}

void
passphrase_free(char *ppbuff)
{
	if (ppbuff != NULL) {
		memset(ppbuff, 0, PPBUFF_SIZE);
		free(ppbuff);
	}
}

/*
 * Display information about the current file.
 *
 * The format here roughly duplicates the output of 'ls -l'.
 * This is based on SUSv2, where 'tar tv' is documented as
 * listing additional information in an "unspecified format,"
 * and 'pax -l' is documented as using the same format as 'ls -l'.
 */
void
list_item_verbose(struct bsdtar *bsdtar, FILE *out, struct archive_entry *entry)
{
	char			 tmp[100];
	size_t			 w;
	const char		*p;
	const char		*fmt;
	time_t			 tim;
	static time_t		 now;

	/*
	 * We avoid collecting the entire list in memory at once by
	 * listing things as we see them.  However, that also means we can't
	 * just pre-compute the field widths.  Instead, we start with guesses
	 * and just widen them as necessary.  These numbers are completely
	 * arbitrary.
	 */
	if (!bsdtar->u_width) {
		bsdtar->u_width = 6;
		bsdtar->gs_width = 13;
	}
	if (!now)
		time(&now);
	fprintf(out, "%s %d ",
	    archive_entry_strmode(entry),
	    archive_entry_nlink(entry));

	/* Use uname if it's present, else uid. */
	p = archive_entry_uname(entry);
	if ((p == NULL) || (*p == '\0')) {
		sprintf(tmp, "%lu ",
		    (unsigned long)archive_entry_uid(entry));
		p = tmp;
	}
	w = strlen(p);
	if (w > bsdtar->u_width)
		bsdtar->u_width = w;
	fprintf(out, "%-*s ", (int)bsdtar->u_width, p);

	/* Use gname if it's present, else gid. */
	p = archive_entry_gname(entry);
	if (p != NULL && p[0] != '\0') {
		fprintf(out, "%s", p);
		w = strlen(p);
	} else {
		sprintf(tmp, "%lu",
		    (unsigned long)archive_entry_gid(entry));
		w = strlen(tmp);
		fprintf(out, "%s", tmp);
	}

	/*
	 * Print device number or file size, right-aligned so as to make
	 * total width of group and devnum/filesize fields be gs_width.
	 * If gs_width is too small, grow it.
	 */
	if (archive_entry_filetype(entry) == AE_IFCHR
	    || archive_entry_filetype(entry) == AE_IFBLK) {
		sprintf(tmp, "%lu,%lu",
		    (unsigned long)archive_entry_rdevmajor(entry),
		    (unsigned long)archive_entry_rdevminor(entry));
	} else {
		strcpy(tmp, tar_i64toa(archive_entry_size(entry)));
	}
	if (w + strlen(tmp) >= bsdtar->gs_width)
		bsdtar->gs_width = w+strlen(tmp)+1;
	fprintf(out, "%*s", (int)(bsdtar->gs_width - w), tmp);

	/* Format the time using 'ls -l' conventions. */
	tim = archive_entry_mtime(entry);
#define	HALF_YEAR (time_t)365 * 86400 / 2
#if defined(_WIN32) && !defined(__CYGWIN__)
#define	DAY_FMT  "%d"  /* Windows' strftime function does not support %e format. */
#else
#define	DAY_FMT  "%e"  /* Day number without leading zeros */
#endif
	if (tim < now - HALF_YEAR || tim > now + HALF_YEAR)
		fmt = bsdtar->day_first ? DAY_FMT " %b  %Y" : "%b " DAY_FMT "  %Y";
	else
		fmt = bsdtar->day_first ? DAY_FMT " %b %H:%M" : "%b " DAY_FMT " %H:%M";
	strftime(tmp, sizeof(tmp), fmt, localtime(&tim));
	fprintf(out, " %s ", tmp);
	safe_fprintf(out, "%s", archive_entry_pathname(entry));

	/* Extra information for links. */
	if (archive_entry_hardlink(entry)) /* Hard link */
		safe_fprintf(out, " link to %s",
		    archive_entry_hardlink(entry));
	else if (archive_entry_symlink(entry)) /* Symbolic link */
		safe_fprintf(out, " -> %s", archive_entry_symlink(entry));
}
Exemple #4
0
/*
 * Write user-specified files/dirs to opened archive.
 */
static void
write_archive(struct archive *a, struct bsdtar *bsdtar)
{
	const char *arg;
	struct archive_entry *entry, *sparse_entry;

	/* Choose a suitable copy buffer size */
	bsdtar->buff_size = 64 * 1024;
	while (bsdtar->buff_size < (size_t)bsdtar->bytes_per_block)
	  bsdtar->buff_size *= 2;
	/* Try to compensate for space we'll lose to alignment. */
	bsdtar->buff_size += 16 * 1024;

	/* Allocate a buffer for file data. */
	if ((bsdtar->buff = malloc(bsdtar->buff_size)) == NULL)
		lafe_errc(1, 0, "cannot allocate memory");

	if ((bsdtar->resolver = archive_entry_linkresolver_new()) == NULL)
		lafe_errc(1, 0, "cannot create link resolver");
	archive_entry_linkresolver_set_strategy(bsdtar->resolver,
	    archive_format(a));

	/* Create a read_disk object. */
	if ((bsdtar->diskreader = archive_read_disk_new()) == NULL)
		lafe_errc(1, 0, "Cannot create read_disk object");
	/* Tell the read_disk how handle symlink. */
	switch (bsdtar->symlink_mode) {
	case 'H':
		archive_read_disk_set_symlink_hybrid(bsdtar->diskreader);
		break;
	case 'L':
		archive_read_disk_set_symlink_logical(bsdtar->diskreader);
		break;
	default:
		archive_read_disk_set_symlink_physical(bsdtar->diskreader);
		break;
	}
	/* Register entry filters. */
	archive_read_disk_set_matching(bsdtar->diskreader,
	    bsdtar->matching, excluded_callback, bsdtar);
	archive_read_disk_set_metadata_filter_callback(
	    bsdtar->diskreader, metadata_filter, bsdtar);
	/* Set the behavior of archive_read_disk. */
	archive_read_disk_set_behavior(bsdtar->diskreader,
	    bsdtar->readdisk_flags);
	archive_read_disk_set_standard_lookup(bsdtar->diskreader);

	if (bsdtar->names_from_file != NULL)
		archive_names_from_file(bsdtar, a);

	while (*bsdtar->argv) {
		arg = *bsdtar->argv;
		if (arg[0] == '-' && arg[1] == 'C') {
			arg += 2;
			if (*arg == '\0') {
				bsdtar->argv++;
				arg = *bsdtar->argv;
				if (arg == NULL) {
					lafe_warnc(0, "%s",
					    "Missing argument for -C");
					bsdtar->return_value = 1;
					goto cleanup;
				}
				if (*arg == '\0') {
					lafe_warnc(0,
					    "Meaningless argument for -C: ''");
					bsdtar->return_value = 1;
					goto cleanup;
				}
			}
			set_chdir(bsdtar, arg);
		} else {
			if (*arg != '/' && (arg[0] != '@' || arg[1] != '/'))
				do_chdir(bsdtar); /* Handle a deferred -C */
			if (*arg == '@') {
				if (append_archive_filename(bsdtar, a,
				    arg + 1) != 0)
					break;
			} else
				write_hierarchy(bsdtar, a, arg);
		}
		bsdtar->argv++;
	}

	archive_read_disk_set_matching(bsdtar->diskreader, NULL, NULL, NULL);
	archive_read_disk_set_metadata_filter_callback(
	    bsdtar->diskreader, NULL, NULL);
	entry = NULL;
	archive_entry_linkify(bsdtar->resolver, &entry, &sparse_entry);
	while (entry != NULL) {
		int r;
		struct archive_entry *entry2;
		struct archive *disk = bsdtar->diskreader;

		/*
		 * This tricky code here is to correctly read the cotents
		 * of the entry because the disk reader bsdtar->diskreader
		 * is pointing at does not have any information about the
		 * entry by this time and using archive_read_data_block()
		 * with the disk reader consequently must fail. And we
		 * have to re-open the entry to read the contents.
		 */
		/* TODO: Work with -C option as well. */
		r = archive_read_disk_open(disk,
			archive_entry_sourcepath(entry));
		if (r != ARCHIVE_OK) {
			lafe_warnc(archive_errno(disk),
			    "%s", archive_error_string(disk));
			bsdtar->return_value = 1;
			archive_entry_free(entry);
			continue;
		}

		/*
		 * Invoke archive_read_next_header2() to work
		 * archive_read_data_block(), which is called via write_file(),
		 * without failure.
		 */
		entry2 = archive_entry_new();
		r = archive_read_next_header2(disk, entry2);
		archive_entry_free(entry2);
		if (r != ARCHIVE_OK) {
			lafe_warnc(archive_errno(disk),
			    "%s", archive_error_string(disk));
			if (r == ARCHIVE_FATAL)
				bsdtar->return_value = 1;
			else
				archive_read_close(disk);
			archive_entry_free(entry);
			continue;
		}

		write_file(bsdtar, a, entry);
		archive_entry_free(entry);
		archive_read_close(disk);
		entry = NULL;
		archive_entry_linkify(bsdtar->resolver, &entry, &sparse_entry);
	}

	if (archive_write_close(a)) {
		lafe_warnc(0, "%s", archive_error_string(a));
		bsdtar->return_value = 1;
	}

cleanup:
	/* Free file data buffer. */
	free(bsdtar->buff);
	archive_entry_linkresolver_free(bsdtar->resolver);
	bsdtar->resolver = NULL;
	archive_read_free(bsdtar->diskreader);
	bsdtar->diskreader = NULL;

	if (bsdtar->option_totals) {
		fprintf(stderr, "Total bytes written: %s\n",
		    tar_i64toa(archive_filter_bytes(a, -1)));
	}

	archive_write_free(a);
}
Exemple #5
0
/*
 * Display information about the current file.
 *
 * The format here roughly duplicates the output of 'ls -l'.
 * This is based on SUSv2, where 'tar tv' is documented as
 * listing additional information in an "unspecified format,"
 * and 'pax -l' is documented as using the same format as 'ls -l'.
 */
static void
list_item_verbose(struct bsdtar *bsdtar, FILE *out, struct archive_entry *entry)
{
	char			 tmp[100];
	size_t			 w;
	const char		*p;
	const char		*fmt;
	time_t			 tim;
	static time_t		 now;

	/*
	 * We avoid collecting the entire list in memory at once by
	 * listing things as we see them.  However, that also means we can't
	 * just pre-compute the field widths.  Instead, we start with guesses
	 * and just widen them as necessary.  These numbers are completely
	 * arbitrary.
	 */
	if (!bsdtar->u_width) {
		bsdtar->u_width = 6;
		bsdtar->gs_width = 13;
	}
	if (!now)
		time(&now);
	fprintf(out, "%s %d ",
	    archive_entry_strmode(entry),
	    archive_entry_nlink(entry));

	/* Use uname if it's present, else uid. */
	p = archive_entry_uname(entry);
	if ((p == NULL) || (*p == '\0')) {
		sprintf(tmp, "%lu ",
		    (unsigned long)archive_entry_uid(entry));
		p = tmp;
	}
	w = strlen(p);
	if (w > bsdtar->u_width)
		bsdtar->u_width = w;
	fprintf(out, "%-*s ", (int)bsdtar->u_width, p);

	/* Use gname if it's present, else gid. */
	p = archive_entry_gname(entry);
	if (p != NULL && p[0] != '\0') {
		fprintf(out, "%s", p);
		w = strlen(p);
	} else {
		sprintf(tmp, "%lu",
		    (unsigned long)archive_entry_gid(entry));
		w = strlen(tmp);
		fprintf(out, "%s", tmp);
	}

	/*
	 * Print device number or file size, right-aligned so as to make
	 * total width of group and devnum/filesize fields be gs_width.
	 * If gs_width is too small, grow it.
	 */
	if (archive_entry_filetype(entry) == AE_IFCHR
	    || archive_entry_filetype(entry) == AE_IFBLK) {
		sprintf(tmp, "%lu,%lu",
		    (unsigned long)archive_entry_rdevmajor(entry),
		    (unsigned long)archive_entry_rdevminor(entry));
	} else {
		strcpy(tmp, tar_i64toa(archive_entry_size(entry)));
	}
	if (w + strlen(tmp) >= bsdtar->gs_width)
		bsdtar->gs_width = w+strlen(tmp)+1;
	fprintf(out, "%*s", (int)(bsdtar->gs_width - w), tmp);

	/* Format the time using 'ls -l' conventions. */
	tim = archive_entry_mtime(entry);
#define HALF_YEAR (time_t)365 * 86400 / 2
#if defined(_WIN32) && !defined(__CYGWIN__)
#define DAY_FMT  "%d"  /* Windows' strftime function does not support %e format. */
#else
#define DAY_FMT  "%e"  /* Day number without leading zeros */
#endif
	if (tim < now - HALF_YEAR || tim > now + HALF_YEAR)
		fmt = bsdtar->day_first ? DAY_FMT " %b  %Y" : "%b " DAY_FMT "  %Y";
	else
		fmt = bsdtar->day_first ? DAY_FMT " %b %H:%M" : "%b " DAY_FMT " %H:%M";
	strftime(tmp, sizeof(tmp), fmt, localtime(&tim));
	fprintf(out, " %s ", tmp);
	safe_fprintf(out, "%s", archive_entry_pathname(entry));

	/* Extra information for links. */
	if (archive_entry_hardlink(entry)) /* Hard link */
		safe_fprintf(out, " link to %s",
		    archive_entry_hardlink(entry));
	else if (archive_entry_symlink(entry)) /* Symbolic link */
		safe_fprintf(out, " -> %s", archive_entry_symlink(entry));
}
Exemple #6
0
/*
 * Write user-specified files/dirs to opened archive.
 */
static void
write_archive(struct archive *a, struct bsdtar *bsdtar)
{
	const char *arg;
	struct archive_entry *entry, *sparse_entry;

	/* Choose a suitable copy buffer size */
	bsdtar->buff_size = 64 * 1024;
	while (bsdtar->buff_size < (size_t)bsdtar->bytes_per_block)
	  bsdtar->buff_size *= 2;
	/* Try to compensate for space we'll lose to alignment. */
	bsdtar->buff_size += 16 * 1024;

	/* Allocate a buffer for file data. */
	if ((bsdtar->buff = malloc(bsdtar->buff_size)) == NULL)
		lafe_errc(1, 0, "cannot allocate memory");

	if ((bsdtar->resolver = archive_entry_linkresolver_new()) == NULL)
		lafe_errc(1, 0, "cannot create link resolver");
	archive_entry_linkresolver_set_strategy(bsdtar->resolver,
	    archive_format(a));
	if ((bsdtar->diskreader = archive_read_disk_new()) == NULL)
		lafe_errc(1, 0, "Cannot create read_disk object");
	archive_read_disk_set_standard_lookup(bsdtar->diskreader);

	if (bsdtar->names_from_file != NULL)
		archive_names_from_file(bsdtar, a);

	while (*bsdtar->argv) {
		arg = *bsdtar->argv;
		if (arg[0] == '-' && arg[1] == 'C') {
			arg += 2;
			if (*arg == '\0') {
				bsdtar->argv++;
				arg = *bsdtar->argv;
				if (arg == NULL) {
					lafe_warnc(0, "%s",
					    "Missing argument for -C");
					bsdtar->return_value = 1;
					goto cleanup;
				}
				if (*arg == '\0') {
					lafe_warnc(0,
					    "Meaningless argument for -C: ''");
					bsdtar->return_value = 1;
					goto cleanup;
				}
			}
			set_chdir(bsdtar, arg);
		} else {
			if (*arg != '/' && (arg[0] != '@' || arg[1] != '/'))
				do_chdir(bsdtar); /* Handle a deferred -C */
			if (*arg == '@') {
				if (append_archive_filename(bsdtar, a,
				    arg + 1) != 0)
					break;
			} else
				write_hierarchy(bsdtar, a, arg);
		}
		bsdtar->argv++;
	}

	entry = NULL;
	archive_entry_linkify(bsdtar->resolver, &entry, &sparse_entry);
	while (entry != NULL) {
		write_file(bsdtar, a, entry);
		archive_entry_free(entry);
		entry = NULL;
		archive_entry_linkify(bsdtar->resolver, &entry, &sparse_entry);
	}

	if (archive_write_close(a)) {
		lafe_warnc(0, "%s", archive_error_string(a));
		bsdtar->return_value = 1;
	}

cleanup:
	/* Free file data buffer. */
	free(bsdtar->buff);
	archive_entry_linkresolver_free(bsdtar->resolver);
	bsdtar->resolver = NULL;
	archive_read_free(bsdtar->diskreader);
	bsdtar->diskreader = NULL;

	if (bsdtar->option_totals) {
		fprintf(stderr, "Total bytes written: %s\n",
		    tar_i64toa(archive_position_compressed(a)));
	}

	archive_write_free(a);
}