#include <time.h>
-#ifndef FNM_LEADING_DIR
-# include <fnmatch.h>
-#endif
-
#include "common.h"
union block *current_header; /* points to current archive header */
struct stat current_stat; /* stat struct corresponding */
enum archive_format current_format; /* recognized format */
-static uintmax_t from_oct PARAMS ((const char *, size_t, const char *, uintmax_t));
+static uintmax_t from_chars PARAMS ((const char *, size_t, const char *,
+ uintmax_t, uintmax_t));
+/* Table of base 64 digit values indexed by unsigned chars.
+ The value is 64 for unsigned chars that are not base 64 digits. */
+static char base64_map[1 + (unsigned char) -1];
+
+static void
+base64_init (void)
+{
+ int i;
+ memset (base64_map, 64, sizeof base64_map);
+ for (i = 0; i < 64; i++)
+ base64_map[(int) base_64_digits[i]] = i;
+}
/*-----------------------------------.
| Main loop for reading an archive. |
enum read_header prev_status;
char save_typeflag;
+ base64_init ();
name_gather ();
open_archive (ACCESS_READ);
Ensure incoming names are null terminated. */
/* FIXME: This is a quick kludge before 1.12 goes out. */
- current_stat.st_mtime = TIME_FROM_OCT (current_header->header.mtime);
+ current_stat.st_mtime
+ = TIME_FROM_CHARS (current_header->header.mtime);
if (!name_match (current_file_name)
|| current_stat.st_mtime < newer_mtime_option
- || excluded_pathname (excluded, current_file_name))
+ || excluded_name (current_file_name))
{
int isextended = 0;
if (!header)
return HEADER_END_OF_FILE;
- parsed_sum = from_oct (header->header.chksum,
- sizeof header->header.chksum,
- (char *) 0, TYPE_MAXIMUM (long));
+ parsed_sum = from_chars (header->header.chksum,
+ sizeof header->header.chksum,
+ (char *) 0, (uintmax_t) 0,
+ (uintmax_t) TYPE_MAXIMUM (long));
if (parsed_sum == (uintmax_t) -1)
return HEADER_FAILURE;
if (header->header.typeflag == LNKTYPE)
current_stat.st_size = 0; /* links 0 size on tape */
else
- current_stat.st_size = OFF_FROM_OCT (header->header.size);
+ current_stat.st_size = OFF_FROM_CHARS (header->header.size);
header->header.name[NAME_FIELD_SIZE - 1] = '\0';
if (header->header.typeflag == GNUTYPE_LONGNAME
format = V7_FORMAT;
*format_pointer = format;
- stat_info->st_mode = MODE_FROM_OCT (header->header.mode);
- stat_info->st_mtime = TIME_FROM_OCT (header->header.mtime);
+ stat_info->st_mode = MODE_FROM_CHARS (header->header.mode);
+ stat_info->st_mtime = TIME_FROM_CHARS (header->header.mtime);
if (format == OLDGNU_FORMAT && incremental_option)
{
- stat_info->st_atime = TIME_FROM_OCT (header->oldgnu_header.atime);
- stat_info->st_ctime = TIME_FROM_OCT (header->oldgnu_header.ctime);
+ stat_info->st_atime = TIME_FROM_CHARS (header->oldgnu_header.atime);
+ stat_info->st_ctime = TIME_FROM_CHARS (header->oldgnu_header.ctime);
}
if (format == V7_FORMAT)
{
- stat_info->st_uid = UID_FROM_OCT (header->header.uid);
- stat_info->st_gid = GID_FROM_OCT (header->header.gid);
+ stat_info->st_uid = UID_FROM_CHARS (header->header.uid);
+ stat_info->st_gid = GID_FROM_CHARS (header->header.gid);
stat_info->st_rdev = 0;
}
else
if (numeric_owner_option
|| !*header->header.uname
|| !uname_to_uid (header->header.uname, &stat_info->st_uid))
- stat_info->st_uid = UID_FROM_OCT (header->header.uid);
+ stat_info->st_uid = UID_FROM_CHARS (header->header.uid);
if (numeric_owner_option
|| !*header->header.gname
|| !gname_to_gid (header->header.gname, &stat_info->st_gid))
- stat_info->st_gid = GID_FROM_OCT (header->header.gid);
+ stat_info->st_gid = GID_FROM_CHARS (header->header.gid);
}
switch (header->header.typeflag)
{
case BLKTYPE:
stat_info->st_rdev
- = makedev (MAJOR_FROM_OCT (header->header.devmajor),
- MINOR_FROM_OCT (header->header.devminor));
+ = makedev (MAJOR_FROM_CHARS (header->header.devmajor),
+ MINOR_FROM_CHARS (header->header.devminor));
break;
case CHRTYPE:
stat_info->st_rdev
- = makedev (MAJOR_FROM_OCT (header->header.devmajor),
- MINOR_FROM_OCT (header->header.devminor));
+ = makedev (MAJOR_FROM_CHARS (header->header.devmajor),
+ MINOR_FROM_CHARS (header->header.devminor));
break;
default:
}
/*------------------------------------------------------------------------.
-| Quick and dirty octal conversion. Result is -1 if the field is invalid |
-| (all blank, or nonoctal). |
+| Convert buffer at WHERE0 of size DIGS from external format to uintmax_t.|
+| The data is of type TYPE. The buffer must represent a value in the |
+| range -MINUS_MINVAL through MAXVAL. |
`------------------------------------------------------------------------*/
static uintmax_t
-from_oct (const char *where0, size_t digs0, const char *type, uintmax_t maxval)
+from_chars (char const *where0, size_t digs, char const *type,
+ uintmax_t minus_minval, uintmax_t maxval)
{
uintmax_t value;
- const char *where = where0;
- size_t digs = digs0;
+ char const *where = where0;
+ char const *lim = where + digs;
+ int negative = 0;
for (;;)
{
- if (digs == 0)
+ if (where == lim)
{
if (type)
- ERROR ((0, 0, _("Blanks in header where octal %s value expected"),
+ ERROR ((0, 0,
+ _("Blanks in header where numeric %s value expected"),
type));
return -1;
}
if (!ISSPACE ((unsigned char) *where))
break;
where++;
- digs--;
}
value = 0;
- while (digs != 0 && ISODIGIT (*where))
+ if (ISODIGIT (*where))
{
- /* Scan til nonoctal. */
+ do
+ {
+ if (value << LG_8 >> LG_8 != value)
+ goto out_of_range;
+ value = (value << LG_8) | (*where++ - '0');
+ }
+ while (where != lim && ISODIGIT (*where));
- if (value << 3 >> 3 != value)
- goto out_of_range;
- value = (value << 3) | (*where++ - '0');
- --digs;
+ /* Parse the output of older tars, which output negative values
+ in two's complement octal. This method works only if the
+ type has the same number of bits as it did on the host that
+ created the tar file, but that's the best we can do. */
+ if (maxval < value && value - maxval <= minus_minval)
+ {
+ value = minus_minval - (value - maxval);
+ negative = 1;
+ }
+ }
+ else if (*where == '-' || *where == '+')
+ {
+ int dig;
+ negative = *where++ == '-';
+ while (where != lim
+ && (dig = base64_map[(unsigned char) *where]) < 64)
+ {
+ if (value << LG_64 >> LG_64 != value)
+ goto out_of_range;
+ value = (value << LG_64) | dig;
+ where++;
+ }
}
- if (digs != 0 && *where && !ISSPACE ((unsigned char) *where))
+ if (where != lim && *where && !ISSPACE ((unsigned char) *where))
{
if (type)
{
set_quoting_style (o, c_quoting_style);
}
- for (digs = digs0; digs && ! where0[digs - 1]; digs--)
- continue;
- quotearg_buffer (buf, sizeof buf, where0, digs, o);
+ while (where0 != lim && ! lim[-1])
+ lim--;
+ quotearg_buffer (buf, sizeof buf, where0, lim - where, o);
ERROR ((0, 0,
- _("Header contains %.*s where octal %s value expected"),
+ _("Header contains `%.*s' where numeric %s value expected"),
(int) sizeof buf, buf, type));
}
return -1;
}
- if (value <= maxval)
- return value;
+ if (value <= (negative ? minus_minval : maxval))
+ return negative ? -value : value;
out_of_range:
if (type)
- ERROR ((0, 0, _("Octal value `%.*s' is out of range for %s"),
- (int) digs0, where0, type));
+ ERROR ((0, 0, _("Numeric value `%.*s' is out of range for %s"),
+ (int) digs, where0, type));
return -1;
}
+
gid_t
-gid_from_oct (const char *p, size_t s)
+gid_from_chars (const char *p, size_t s)
{
- return from_oct (p, s, "gid_t", (uintmax_t) TYPE_MAXIMUM (gid_t));
+ return from_chars (p, s, "gid_t",
+ - (uintmax_t) TYPE_MINIMUM (gid_t),
+ (uintmax_t) TYPE_MAXIMUM (gid_t));
}
+
major_t
-major_from_oct (const char *p, size_t s)
+major_from_chars (const char *p, size_t s)
{
- return from_oct (p, s, "major_t", (uintmax_t) TYPE_MAXIMUM (major_t));
+ return from_chars (p, s, "major_t",
+ - (uintmax_t) TYPE_MINIMUM (major_t),
+ (uintmax_t) TYPE_MAXIMUM (major_t));
}
+
minor_t
-minor_from_oct (const char *p, size_t s)
+minor_from_chars (const char *p, size_t s)
{
- return from_oct (p, s, "minor_t", (uintmax_t) TYPE_MAXIMUM (minor_t));
+ return from_chars (p, s, "minor_t",
+ - (uintmax_t) TYPE_MINIMUM (minor_t),
+ (uintmax_t) TYPE_MAXIMUM (minor_t));
}
+
mode_t
-mode_from_oct (const char *p, size_t s)
+mode_from_chars (const char *p, size_t s)
{
/* Do not complain about unrecognized mode bits. */
- unsigned u = from_oct (p, s, "mode_t", TYPE_MAXIMUM (uintmax_t));
+ unsigned u = from_chars (p, s, "mode_t",
+ - (uintmax_t) TYPE_MINIMUM (mode_t),
+ TYPE_MAXIMUM (uintmax_t));
return ((u & TSUID ? S_ISUID : 0)
| (u & TSGID ? S_ISGID : 0)
| (u & TSVTX ? S_ISVTX : 0)
| (u & TOWRITE ? S_IWOTH : 0)
| (u & TOEXEC ? S_IXOTH : 0));
}
+
off_t
-off_from_oct (const char *p, size_t s)
+off_from_chars (const char *p, size_t s)
{
- return from_oct (p, s, "off_t", (uintmax_t) TYPE_MAXIMUM (off_t));
+ return from_chars (p, s, "off_t",
+ - (uintmax_t) TYPE_MINIMUM (off_t),
+ (uintmax_t) TYPE_MAXIMUM (off_t));
}
+
size_t
-size_from_oct (const char *p, size_t s)
+size_from_chars (const char *p, size_t s)
{
- return from_oct (p, s, "size_t", (uintmax_t) TYPE_MAXIMUM (size_t));
+ return from_chars (p, s, "size_t", (uintmax_t) 0,
+ (uintmax_t) TYPE_MAXIMUM (size_t));
}
+
time_t
-time_from_oct (const char *p, size_t s)
+time_from_chars (const char *p, size_t s)
{
- return from_oct (p, s, "time_t", (uintmax_t) TYPE_MAXIMUM (time_t));
+ return from_chars (p, s, "time_t",
+ - (uintmax_t) TYPE_MINIMUM (time_t),
+ (uintmax_t) TYPE_MAXIMUM (time_t));
}
+
uid_t
-uid_from_oct (const char *p, size_t s)
+uid_from_chars (const char *p, size_t s)
{
- return from_oct (p, s, "uid_t", (uintmax_t) TYPE_MAXIMUM (uid_t));
+ return from_chars (p, s, "uid_t", (uintmax_t) 0,
+ (uintmax_t) TYPE_MAXIMUM (uid_t));
}
+
uintmax_t
-uintmax_from_oct (const char *p, size_t s)
+uintmax_from_chars (const char *p, size_t s)
{
- return from_oct (p, s, "uintmax_t", TYPE_MAXIMUM (uintmax_t));
+ return from_chars (p, s, "uintmax_t", (uintmax_t) 0,
+ TYPE_MAXIMUM (uintmax_t));
}
-
/*----------------------------------------------------------------------.
| Format O as a null-terminated decimal string into BUF _backwards_; |
| return pointer to start of result. |
/* User and group names. */
- if (*current_header->header.uname && current_format != V7_FORMAT)
+ if (*current_header->header.uname && current_format != V7_FORMAT
+ && !numeric_owner_option)
user = current_header->header.uname;
else
- user = STRINGIFY_BIGINT (UINTMAX_FROM_OCT (current_header->header.uid),
+ user = STRINGIFY_BIGINT (UINTMAX_FROM_CHARS
+ (current_header->header.uid),
uform);
- if (*current_header->header.gname && current_format != V7_FORMAT)
+ if (*current_header->header.gname && current_format != V7_FORMAT
+ && !numeric_owner_option)
group = current_header->header.gname;
else
- group = STRINGIFY_BIGINT (UINTMAX_FROM_OCT
+ group = STRINGIFY_BIGINT (UINTMAX_FROM_CHARS
(current_header->header.gid),
gform);
case GNUTYPE_SPARSE:
strcpy (size,
STRINGIFY_BIGINT
- (UINTMAX_FROM_OCT (current_header->oldgnu_header.realsize),
+ (UINTMAX_FROM_CHARS (current_header->oldgnu_header.realsize),
uintbuf));
break;
default:
case GNUTYPE_MULTIVOL:
strcpy (size,
STRINGIFY_BIGINT
- (UINTMAX_FROM_OCT (current_header->oldgnu_header.offset),
+ (UINTMAX_FROM_CHARS (current_header->oldgnu_header.offset),
uintbuf));
fprintf (stdlis, _("--Continued at byte %s--\n"), size);
break;
projects / chaz / tar / commitdiff
