/* POSIX extended headers for tar.
- Copyright (C) 2003, 2004 Free Software Foundation, Inc.
+ Copyright (C) 2003, 2004, 2005, 2006, 2007, 2009, 2010 Free Software
+ Foundation, Inc.
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
- Free Software Foundation; either version 2, or (at your option) any later
+ Free Software Foundation; either version 3, or (at your option) any later
version.
This program is distributed in the hope that it will be useful, but
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
- 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
#include <system.h>
#include <fnmatch.h>
#include <hash.h>
+#include <inttostr.h>
#include <quotearg.h>
-#include <stpcpy.h>
-#include <xstrtol.h>
#include "common.h"
-#define obstack_chunk_alloc xmalloc
-#define obstack_chunk_free free
-#include <obstack.h>
-
-#include <fnmatch.h>
-
+static void xheader_init (struct xheader *xhdr);
static bool xheader_protected_pattern_p (char const *pattern);
static bool xheader_protected_keyword_p (char const *keyword);
static void xheader_set_single_keyword (char *) __attribute__ ((noreturn));
/* Used by xheader_finish() */
static void code_string (char const *string, char const *keyword,
struct xheader *xhdr);
-static void extended_header_init (void);
/* Number of global headers written so far. */
static size_t global_header_count;
However it should wait until buffer.c is finally rewritten */
+\f
+/* Interface functions to obstacks */
+
+static void
+x_obstack_grow (struct xheader *xhdr, const char *ptr, size_t length)
+{
+ obstack_grow (xhdr->stk, ptr, length);
+ xhdr->size += length;
+}
+
+static void
+x_obstack_1grow (struct xheader *xhdr, char c)
+{
+ obstack_1grow (xhdr->stk, c);
+ xhdr->size++;
+}
+
+static void
+x_obstack_blank (struct xheader *xhdr, size_t length)
+{
+ obstack_blank (xhdr->stk, length);
+ xhdr->size += length;
+}
+
\f
/* Keyword options */
/* Template for the name field of an 'x' type header */
static char *exthdr_name;
+static char *exthdr_mtime_option;
+static time_t exthdr_mtime;
+
/* Template for the name field of a 'g' type header */
static char *globexthdr_name;
-static bool
+static char *globexthdr_mtime_option;
+static time_t globexthdr_mtime;
+
+bool
xheader_keyword_deleted_p (const char *kw)
{
struct keyword_list *kp;
static void
xheader_set_single_keyword (char *kw)
{
- USAGE_ERROR ((0, 0, _("Keyword %s is unknown or not yet imlemented"), kw));
+ USAGE_ERROR ((0, 0, _("Keyword %s is unknown or not yet implemented"), kw));
+}
+
+static void
+assign_time_option (char **sval, time_t *tval, const char *input)
+{
+ uintmax_t u;
+ char *p;
+ time_t t = u = strtoumax (input, &p, 10);
+ if (t != u || *p || errno == ERANGE)
+ ERROR ((0, 0, _("Time stamp is out of allowed range")));
+ else
+ {
+ *tval = t;
+ assign_string (sval, input);
+ }
}
static void
global = false;
}
- while (p > kw && isspace (*p))
+ while (p > kw && isspace ((unsigned char) *p))
p--;
*p = 0;
- for (p = eq + 1; *p && isspace (*p); p++)
+ for (p = eq + 1; *p && isspace ((unsigned char) *p); p++)
;
if (strcmp (kw, "delete") == 0)
{
if (xheader_protected_pattern_p (p))
- USAGE_ERROR ((0, 0, _("Pattern %s cannot be used"), p));
+ USAGE_ERROR ((0, 0, _("Pattern %s cannot be used"), quote (p)));
xheader_list_append (&keyword_pattern_list, p, NULL);
}
else if (strcmp (kw, "exthdr.name") == 0)
assign_string (&exthdr_name, p);
else if (strcmp (kw, "globexthdr.name") == 0)
assign_string (&globexthdr_name, p);
+ else if (strcmp (kw, "exthdr.mtime") == 0)
+ assign_time_option (&exthdr_mtime_option, &exthdr_mtime, p);
+ else if (strcmp (kw, "globexthdr.mtime") == 0)
+ assign_time_option (&globexthdr_mtime_option, &globexthdr_mtime, p);
else
{
if (xheader_protected_keyword_p (kw))
}
}
-static void
-to_decimal (uintmax_t value, char *where, size_t size)
-{
- size_t i = 0, j;
-
- where[i++] = 0;
- do
- {
- where[i++] = '0' + value % 10;
- value /= 10;
- }
- while (i < size && value);
- for (j = 0, i--; j < i; j++, i--)
- {
- char c = where[j];
- where[j] = where[i];
- where[i] = c;
- }
-}
-
/*
string Includes: Replaced By:
%d The directory name of the file,
to the result of the basename
utility on the translated file name.
%p The process ID of the pax process.
+ %n The value of the 3rd argument.
%% A '%' character. */
-static char *
-xheader_format_name (struct tar_stat_info *st, const char *fmt, bool allow_n)
+char *
+xheader_format_name (struct tar_stat_info *st, const char *fmt, size_t n)
{
char *buf;
size_t len = strlen (fmt);
char *q;
const char *p;
+ char *dirp = NULL;
char *dir = NULL;
char *base = NULL;
- char pidbuf[64];
- char nbuf[64];
+ char pidbuf[UINTMAX_STRSIZE_BOUND];
+ char const *pptr;
+ char nbuf[UINTMAX_STRSIZE_BOUND];
+ char const *nptr = NULL;
for (p = fmt; *p && (p = strchr (p, '%')); )
{
case 'd':
if (st)
{
- dir = safer_name_suffix (dir_name (st->orig_file_name), false);
- len += strlen (dir) - 1;
+ if (!dirp)
+ dirp = dir_name (st->orig_file_name);
+ dir = safer_name_suffix (dirp, false, absolute_names_option);
+ len += strlen (dir) - 2;
}
break;
case 'f':
if (st)
{
- base = base_name (st->orig_file_name);
- len += strlen (base) - 1;
+ base = last_component (st->orig_file_name);
+ len += strlen (base) - 2;
}
break;
case 'p':
- to_decimal (getpid (), pidbuf, sizeof pidbuf);
- len += strlen (pidbuf) - 1;
+ pptr = umaxtostr (getpid (), pidbuf);
+ len += pidbuf + sizeof pidbuf - 1 - pptr - 2;
break;
case 'n':
- if (allow_n)
- {
- to_decimal (global_header_count + 1, pidbuf, sizeof pidbuf);
- len += strlen (nbuf) - 1;
- }
+ nptr = umaxtostr (n, nbuf);
+ len += nbuf + sizeof nbuf - 1 - nptr - 2;
break;
}
p++;
break;
case 'p':
- q = stpcpy (q, pidbuf);
+ q = stpcpy (q, pptr);
p += 2;
break;
case 'n':
- if (allow_n)
+ if (nptr)
{
- q = stpcpy (q, nbuf);
+ q = stpcpy (q, nptr);
p += 2;
+ break;
}
/* else fall through */
*q++ = *p++;
}
+ free (dirp);
+
/* Do not allow it to end in a slash */
while (q > buf && ISSLASH (q[-1]))
q--;
{
if (!exthdr_name)
assign_string (&exthdr_name, "%d/PaxHeaders.%p/%f");
- return xheader_format_name (st, exthdr_name, false);
+ return xheader_format_name (st, exthdr_name, 0);
}
#define GLOBAL_HEADER_TEMPLATE "/GlobalHead.%p.%n"
strcat(globexthdr_name, GLOBAL_HEADER_TEMPLATE);
}
- return xheader_format_name (NULL, globexthdr_name, true);
+ return xheader_format_name (NULL, globexthdr_name, global_header_count + 1);
}
void
-xheader_write (char type, char *name, struct xheader *xhdr)
+xheader_write (char type, char *name, time_t t, struct xheader *xhdr)
{
union block *header;
size_t size;
char *p;
size = xhdr->size;
- header = start_private_header (name, size);
+ switch (type)
+ {
+ case XGLTYPE:
+ if (globexthdr_mtime_option)
+ t = globexthdr_mtime;
+ break;
+
+ case XHDTYPE:
+ if (exthdr_mtime_option)
+ t = exthdr_mtime;
+ break;
+ }
+ header = start_private_header (name, size, t);
header->header.typeflag = type;
simple_finish_header (header);
}
while (size > 0);
xheader_destroy (xhdr);
+
+ if (type == XGLTYPE)
+ global_header_count++;
}
void
-xheader_write_global (void)
+xheader_write_global (struct xheader *xhdr)
{
- char *name;
- struct keyword_list *kp;
+ if (keyword_global_override_list)
+ {
+ struct keyword_list *kp;
- if (!keyword_global_override_list)
- return;
+ xheader_init (xhdr);
+ for (kp = keyword_global_override_list; kp; kp = kp->next)
+ code_string (kp->value, kp->pattern, xhdr);
+ }
+ if (xhdr->stk)
+ {
+ char *name;
- extended_header_init ();
- for (kp = keyword_global_override_list; kp; kp = kp->next)
- code_string (kp->value, kp->pattern, &extended_header);
- xheader_finish (&extended_header);
- xheader_write (XGLTYPE, name = xheader_ghdr_name (),
- &extended_header);
- free (name);
- global_header_count++;
+ xheader_finish (xhdr);
+ xheader_write (XGLTYPE, name = xheader_ghdr_name (), time (NULL), xhdr);
+ free (name);
+ }
}
\f
/* General Interface */
+#define XHDR_PROTECTED 0x01
+#define XHDR_GLOBAL 0x02
+
struct xhdr_tab
{
char const *keyword;
void (*coder) (struct tar_stat_info const *, char const *,
- struct xheader *, void *data);
- void (*decoder) (struct tar_stat_info *, char const *);
- bool protect;
+ struct xheader *, void const *data);
+ void (*decoder) (struct tar_stat_info *, char const *, char const *, size_t);
+ int flags;
};
/* This declaration must be extern, because ISO C99 section 6.9.2
struct xhdr_tab const *p;
for (p = xhdr_tab; p->keyword; p++)
- if (p->protect && fnmatch (pattern, p->keyword, 0) == 0)
+ if ((p->flags & XHDR_PROTECTED) && fnmatch (pattern, p->keyword, 0) == 0)
return true;
return false;
}
struct xhdr_tab const *p;
for (p = xhdr_tab; p->keyword; p++)
- if (p->protect && strcmp (p->keyword, keyword) == 0)
+ if ((p->flags & XHDR_PROTECTED) && strcmp (p->keyword, keyword) == 0)
return true;
return false;
}
-/* Decodes a single extended header record. Advances P to the next
- record.
- Returns true on success, false otherwise. */
+/* Decode a single extended header record, advancing *PTR to the next record.
+ Return true on success, false otherwise. */
static bool
-decode_record (char **p,
- void (*handler) (void *, char const *, char const *),
+decode_record (struct xheader *xhdr,
+ char **ptr,
+ void (*handler) (void *, char const *, char const *, size_t),
void *data)
{
+ char *start = *ptr;
+ char *p = start;
+ uintmax_t u;
size_t len;
+ char *len_lim;
char const *keyword;
- char *start = *p;
- char endc;
+ char *nextp;
+ size_t len_max = xhdr->buffer + xhdr->size - start;
- if (**p == 0)
- return false;
+ while (*p == ' ' || *p == '\t')
+ p++;
- len = strtoul (*p, p, 10);
- if (**p != ' ')
+ if (! ISDIGIT (*p))
{
- ERROR ((0, 0,
- _("Malformed extended header: missing whitespace after the length")));
+ if (*p)
+ ERROR ((0, 0, _("Malformed extended header: missing length")));
return false;
}
- keyword = ++*p;
- for (;*p < start + len; ++*p)
- if (**p == '=')
- break;
+ errno = 0;
+ len = u = strtoumax (p, &len_lim, 10);
+ if (len != u || errno == ERANGE)
+ {
+ ERROR ((0, 0, _("Extended header length is out of allowed range")));
+ return false;
+ }
- if (**p != '=')
+ if (len_max < len)
{
- ERROR ((0, 0, _("Malformed extended header: missing equal sign")));
+ int len_len = len_lim - p;
+ ERROR ((0, 0, _("Extended header length %*s is out of range"),
+ len_len, p));
return false;
}
- **p = 0;
+ nextp = start + len;
- endc = start[len-1];
- start[len-1] = 0;
+ for (p = len_lim; *p == ' ' || *p == '\t'; p++)
+ continue;
+ if (p == len_lim)
+ {
+ ERROR ((0, 0,
+ _("Malformed extended header: missing blank after length")));
+ return false;
+ }
- handler (data, keyword, *p + 1);
+ keyword = p;
+ p = strchr (p, '=');
+ if (! (p && p < nextp))
+ {
+ ERROR ((0, 0, _("Malformed extended header: missing equal sign")));
+ return false;
+ }
- start[len-1] = endc;
- **p = '=';
- *p = &start[len];
+ if (nextp[-1] != '\n')
+ {
+ ERROR ((0, 0, _("Malformed extended header: missing newline")));
+ return false;
+ }
+
+ *p = nextp[-1] = '\0';
+ handler (data, keyword, p + 1, nextp - p - 2); /* '=' + trailing '\n' */
+ *p = '=';
+ nextp[-1] = '\n';
+ *ptr = nextp;
return true;
}
{
struct xhdr_tab const *t = locate_handler (kp->pattern);
if (t)
- t->decoder (st, kp->value);
+ t->decoder (st, t->keyword, kp->value, strlen (kp->value));
}
}
static void
-decx (void *data, char const *keyword, char const *value)
+decx (void *data, char const *keyword, char const *value, size_t size)
{
struct xhdr_tab const *t;
struct tar_stat_info *st = data;
t = locate_handler (keyword);
if (t)
- t->decoder (st, value);
+ t->decoder (st, keyword, value, size);
+ else
+ WARNOPT (WARN_UNKNOWN_KEYWORD,
+ (0, 0, _("Ignoring unknown extended header keyword `%s'"),
+ keyword));
}
void
run_override_list (keyword_global_override_list, st);
run_override_list (global_header_override_list, st);
- if (extended_header.size)
+ if (st->xhdr.size)
{
- char *p = extended_header.buffer + BLOCKSIZE;
- char *endp = &extended_header.buffer[extended_header.size-1];
-
- while (p < endp)
- if (!decode_record (&p, decx, st))
- break;
+ char *p = st->xhdr.buffer + BLOCKSIZE;
+ while (decode_record (&st->xhdr, &p, decx, st))
+ continue;
}
run_override_list (keyword_override_list, st);
}
static void
-decg (void *data, char const *keyword, char const *value)
+decg (void *data, char const *keyword, char const *value,
+ size_t size __attribute__((unused)))
{
struct keyword_list **kwl = data;
- xheader_list_append (kwl, keyword, value);
+ struct xhdr_tab const *tab = locate_handler (keyword);
+ if (tab && (tab->flags & XHDR_GLOBAL))
+ tab->decoder (data, keyword, value, size);
+ else
+ xheader_list_append (kwl, keyword, value);
}
void
-xheader_decode_global (void)
+xheader_decode_global (struct xheader *xhdr)
{
- if (extended_header.size)
+ if (xhdr->size)
{
- char *p = extended_header.buffer + BLOCKSIZE;
- char *endp = &extended_header.buffer[extended_header.size-1];
+ char *p = xhdr->buffer + BLOCKSIZE;
xheader_list_destroy (&global_header_override_list);
- while (p < endp)
- if (!decode_record (&p, decg, &global_header_override_list))
- break;
+ while (decode_record (xhdr, &p, decg, &global_header_override_list))
+ continue;
}
}
static void
-extended_header_init (void)
+xheader_init (struct xheader *xhdr)
{
- if (!extended_header.stk)
+ if (!xhdr->stk)
{
- extended_header.stk = xmalloc (sizeof *extended_header.stk);
- obstack_init (extended_header.stk);
+ xhdr->stk = xmalloc (sizeof *xhdr->stk);
+ obstack_init (xhdr->stk);
}
}
void
-xheader_store (char const *keyword, struct tar_stat_info const *st, void *data)
+xheader_store (char const *keyword, struct tar_stat_info *st,
+ void const *data)
{
struct xhdr_tab const *t;
- if (extended_header.buffer)
+ if (st->xhdr.buffer)
return;
t = locate_handler (keyword);
- if (!t)
+ if (!t || !t->coder)
return;
if (xheader_keyword_deleted_p (keyword)
|| xheader_keyword_override_p (keyword))
return;
- extended_header_init ();
- t->coder (st, keyword, &extended_header, data);
+ xheader_init (&st->xhdr);
+ t->coder (st, keyword, &st->xhdr, data);
}
void
-xheader_read (union block *p, size_t size)
+xheader_read (struct xheader *xhdr, union block *p, size_t size)
{
size_t j = 0;
- size_t nblocks;
- free (extended_header.buffer);
size += BLOCKSIZE;
- extended_header.size = size;
- nblocks = (size + BLOCKSIZE - 1) / BLOCKSIZE;
- extended_header.buffer = xmalloc (size + 1);
+ xhdr->size = size;
+ xhdr->buffer = xmalloc (size + 1);
+ xhdr->buffer[size] = '\0';
do
{
if (len > BLOCKSIZE)
len = BLOCKSIZE;
- memcpy (&extended_header.buffer[j], p->buffer, len);
+ if (!p)
+ FATAL_ERROR ((0, 0, _("Unexpected EOF in archive")));
+
+ memcpy (&xhdr->buffer[j], p->buffer, len);
set_next_block_after (p);
p = find_next_block ();
while (size > 0);
}
-static size_t
-format_uintmax (uintmax_t val, char *buf, size_t s)
-{
- if (!buf)
- {
- s = 0;
- do
- s++;
- while ((val /= 10) != 0);
- }
- else
- {
- char *p = buf + s - 1;
-
- do
- {
- *p-- = val % 10 + '0';
- }
- while ((val /= 10) != 0);
-
- while (p >= buf)
- *p-- = '0';
- }
- return s;
-}
-
static void
-xheader_print (struct xheader *xhdr, char const *keyword, char const *value)
+xheader_print_n (struct xheader *xhdr, char const *keyword,
+ char const *value, size_t vsize)
{
- size_t len = strlen (keyword) + strlen (value) + 3; /* ' ' + '=' + '\n' */
- size_t p, n = 0;
- char nbuf[100];
+ size_t len = strlen (keyword) + vsize + 3; /* ' ' + '=' + '\n' */
+ size_t p;
+ size_t n = 0;
+ char nbuf[UINTMAX_STRSIZE_BOUND];
+ char const *np;
do
{
p = n;
- n = format_uintmax (len + p, NULL, 0);
+ np = umaxtostr (len + p, nbuf);
+ n = nbuf + sizeof nbuf - 1 - np;
}
while (n != p);
- format_uintmax (len + n, nbuf, n);
- obstack_grow (xhdr->stk, nbuf, n);
- obstack_1grow (xhdr->stk, ' ');
- obstack_grow (xhdr->stk, keyword, strlen (keyword));
- obstack_1grow (xhdr->stk, '=');
- obstack_grow (xhdr->stk, value, strlen (value));
- obstack_1grow (xhdr->stk, '\n');
+ x_obstack_grow (xhdr, np, n);
+ x_obstack_1grow (xhdr, ' ');
+ x_obstack_grow (xhdr, keyword, strlen (keyword));
+ x_obstack_1grow (xhdr, '=');
+ x_obstack_grow (xhdr, value, vsize);
+ x_obstack_1grow (xhdr, '\n');
+}
+
+static void
+xheader_print (struct xheader *xhdr, char const *keyword, char const *value)
+{
+ xheader_print_n (xhdr, keyword, value, strlen (value));
}
void
for (kp = keyword_override_list; kp; kp = kp->next)
code_string (kp->value, kp->pattern, xhdr);
- obstack_1grow (xhdr->stk, 0);
xhdr->buffer = obstack_finish (xhdr->stk);
- xhdr->size = strlen (xhdr->buffer);
}
void
xhdr->size = 0;
}
+\f
+/* Buildable strings */
+
+void
+xheader_string_begin (struct xheader *xhdr)
+{
+ xhdr->string_length = 0;
+}
+
+void
+xheader_string_add (struct xheader *xhdr, char const *s)
+{
+ if (xhdr->buffer)
+ return;
+ xheader_init (xhdr);
+ xhdr->string_length += strlen (s);
+ x_obstack_grow (xhdr, s, strlen (s));
+}
+
+bool
+xheader_string_end (struct xheader *xhdr, char const *keyword)
+{
+ uintmax_t len;
+ uintmax_t p;
+ uintmax_t n = 0;
+ size_t size;
+ char nbuf[UINTMAX_STRSIZE_BOUND];
+ char const *np;
+ char *cp;
+
+ if (xhdr->buffer)
+ return false;
+ xheader_init (xhdr);
+
+ len = strlen (keyword) + xhdr->string_length + 3; /* ' ' + '=' + '\n' */
+
+ do
+ {
+ p = n;
+ np = umaxtostr (len + p, nbuf);
+ n = nbuf + sizeof nbuf - 1 - np;
+ }
+ while (n != p);
+
+ p = strlen (keyword) + n + 2;
+ size = p;
+ if (size != p)
+ {
+ ERROR ((0, 0,
+ _("Generated keyword/value pair is too long (keyword=%s, length=%s)"),
+ keyword, nbuf));
+ obstack_free (xhdr->stk, obstack_finish (xhdr->stk));
+ return false;
+ }
+ x_obstack_blank (xhdr, p);
+ x_obstack_1grow (xhdr, '\n');
+ cp = obstack_next_free (xhdr->stk) - xhdr->string_length - p - 1;
+ memmove (cp + p, cp, xhdr->string_length);
+ cp = stpcpy (cp, np);
+ *cp++ = ' ';
+ cp = stpcpy (cp, keyword);
+ *cp++ = '=';
+ return true;
+}
+
\f
/* Implementations */
+
+static void
+out_of_range_header (char const *keyword, char const *value,
+ uintmax_t minus_minval, uintmax_t maxval)
+{
+ char minval_buf[UINTMAX_STRSIZE_BOUND + 1];
+ char maxval_buf[UINTMAX_STRSIZE_BOUND];
+ char *minval_string = umaxtostr (minus_minval, minval_buf + 1);
+ char *maxval_string = umaxtostr (maxval, maxval_buf);
+ if (minus_minval)
+ *--minval_string = '-';
+
+ /* TRANSLATORS: The first %s is the pax extended header keyword
+ (atime, gid, etc.). */
+ ERROR ((0, 0, _("Extended header %s=%s is out of range %s..%s"),
+ keyword, value, minval_string, maxval_string));
+}
+
static void
code_string (char const *string, char const *keyword, struct xheader *xhdr)
{
}
static void
-code_time (time_t t, unsigned long nano,
- char const *keyword, struct xheader *xhdr)
+code_time (struct timespec t, char const *keyword, struct xheader *xhdr)
{
- char sbuf[200];
- size_t s = format_uintmax (t, NULL, 0);
- if (s + 11 >= sizeof sbuf)
- return;
- format_uintmax (t, sbuf, s);
- sbuf[s++] = '.';
- s += format_uintmax (nano, sbuf + s, 9);
- sbuf[s] = 0;
- xheader_print (xhdr, keyword, sbuf);
+ char buf[TIMESPEC_STRSIZE_BOUND];
+ xheader_print (xhdr, keyword, code_timespec (t, buf));
}
-static void
-decode_time (char const *arg, time_t *secs, unsigned long *nsecs)
+enum decode_time_status
+ {
+ decode_time_success,
+ decode_time_range,
+ decode_time_bad_header
+ };
+
+static enum decode_time_status
+_decode_time (struct timespec *ts, char const *arg, char const *keyword)
{
- uintmax_t u;
+ time_t s;
+ unsigned long int ns = 0;
char *p;
- if (xstrtoumax (arg, &p, 10, &u, "") == LONGINT_OK)
+ char *arg_lim;
+ bool negative = *arg == '-';
+
+ errno = 0;
+
+ if (ISDIGIT (arg[negative]))
{
- *secs = u;
- if (*p == '.' && xstrtoumax (p+1, NULL, 10, &u, "") == LONGINT_OK)
- *nsecs = u;
+ if (negative)
+ {
+ intmax_t i = strtoimax (arg, &arg_lim, 10);
+ if (TYPE_SIGNED (time_t) ? i < TYPE_MINIMUM (time_t) : i < 0)
+ return decode_time_range;
+ s = i;
+ }
+ else
+ {
+ uintmax_t i = strtoumax (arg, &arg_lim, 10);
+ if (TYPE_MAXIMUM (time_t) < i)
+ return decode_time_range;
+ s = i;
+ }
+
+ p = arg_lim;
+
+ if (errno == ERANGE)
+ return decode_time_range;
+
+ if (*p == '.')
+ {
+ int digits = 0;
+ bool trailing_nonzero = false;
+
+ while (ISDIGIT (*++p))
+ if (digits < LOG10_BILLION)
+ {
+ ns = 10 * ns + (*p - '0');
+ digits++;
+ }
+ else
+ trailing_nonzero |= *p != '0';
+
+ while (digits++ < LOG10_BILLION)
+ ns *= 10;
+
+ if (negative)
+ {
+ /* Convert "-1.10000000000001" to s == -2, ns == 89999999.
+ I.e., truncate time stamps towards minus infinity while
+ converting them to internal form. */
+ ns += trailing_nonzero;
+ if (ns != 0)
+ {
+ if (s == TYPE_MINIMUM (time_t))
+ return decode_time_range;
+ s--;
+ ns = BILLION - ns;
+ }
+ }
+ }
+
+ if (! *p)
+ {
+ ts->tv_sec = s;
+ ts->tv_nsec = ns;
+ return decode_time_success;
+ }
}
+
+ return decode_time_bad_header;
}
+static bool
+decode_time (struct timespec *ts, char const *arg, char const *keyword)
+{
+ switch (_decode_time (ts, arg, keyword))
+ {
+ case decode_time_success:
+ return true;
+ case decode_time_bad_header:
+ ERROR ((0, 0, _("Malformed extended header: invalid %s=%s"),
+ keyword, arg));
+ return false;
+ case decode_time_range:
+ out_of_range_header (keyword, arg, - (uintmax_t) TYPE_MINIMUM (time_t),
+ TYPE_MAXIMUM (time_t));
+ return false;
+ }
+ return true;
+}
+
+
+
static void
code_num (uintmax_t value, char const *keyword, struct xheader *xhdr)
{
- char sbuf[100];
- size_t s = format_uintmax (value, NULL, 0);
- format_uintmax (value, sbuf, s);
- sbuf[s] = 0;
- xheader_print (xhdr, keyword, sbuf);
+ char sbuf[UINTMAX_STRSIZE_BOUND];
+ xheader_print (xhdr, keyword, umaxtostr (value, sbuf));
+}
+
+static bool
+decode_num (uintmax_t *num, char const *arg, uintmax_t maxval,
+ char const *keyword)
+{
+ uintmax_t u;
+ char *arg_lim;
+
+ if (! (ISDIGIT (*arg)
+ && (errno = 0, u = strtoumax (arg, &arg_lim, 10), !*arg_lim)))
+ {
+ ERROR ((0, 0, _("Malformed extended header: invalid %s=%s"),
+ keyword, arg));
+ return false;
+ }
+
+ if (! (u <= maxval && errno != ERANGE))
+ {
+ out_of_range_header (keyword, arg, 0, maxval);
+ return false;
+ }
+
+ *num = u;
+ return true;
}
static void
dummy_coder (struct tar_stat_info const *st __attribute__ ((unused)),
char const *keyword __attribute__ ((unused)),
struct xheader *xhdr __attribute__ ((unused)),
- void *data __attribute__ ((unused)))
+ void const *data __attribute__ ((unused)))
{
}
static void
dummy_decoder (struct tar_stat_info *st __attribute__ ((unused)),
- char const *arg __attribute__ ((unused)))
+ char const *keyword __attribute__ ((unused)),
+ char const *arg __attribute__ ((unused)),
+ size_t size __attribute__((unused)))
{
}
static void
atime_coder (struct tar_stat_info const *st, char const *keyword,
- struct xheader *xhdr, void *data __attribute__ ((unused)))
+ struct xheader *xhdr, void const *data __attribute__ ((unused)))
{
- code_time (st->stat.st_atime, st->atime_nsec, keyword, xhdr);
+ code_time (st->atime, keyword, xhdr);
}
static void
-atime_decoder (struct tar_stat_info *st, char const *arg)
+atime_decoder (struct tar_stat_info *st,
+ char const *keyword,
+ char const *arg,
+ size_t size __attribute__((unused)))
{
- decode_time (arg, &st->stat.st_atime, &st->atime_nsec);
+ struct timespec ts;
+ if (decode_time (&ts, arg, keyword))
+ st->atime = ts;
}
static void
gid_coder (struct tar_stat_info const *st, char const *keyword,
- struct xheader *xhdr, void *data __attribute__ ((unused)))
+ struct xheader *xhdr, void const *data __attribute__ ((unused)))
{
code_num (st->stat.st_gid, keyword, xhdr);
}
static void
-gid_decoder (struct tar_stat_info *st, char const *arg)
+gid_decoder (struct tar_stat_info *st,
+ char const *keyword,
+ char const *arg,
+ size_t size __attribute__((unused)))
{
uintmax_t u;
- if (xstrtoumax (arg, NULL, 10, &u, "") == LONGINT_OK)
+ if (decode_num (&u, arg, TYPE_MAXIMUM (gid_t), keyword))
st->stat.st_gid = u;
}
static void
gname_coder (struct tar_stat_info const *st, char const *keyword,
- struct xheader *xhdr, void *data __attribute__ ((unused)))
+ struct xheader *xhdr, void const *data __attribute__ ((unused)))
{
code_string (st->gname, keyword, xhdr);
}
static void
-gname_decoder (struct tar_stat_info *st, char const *arg)
+gname_decoder (struct tar_stat_info *st,
+ char const *keyword __attribute__((unused)),
+ char const *arg,
+ size_t size __attribute__((unused)))
{
decode_string (&st->gname, arg);
}
static void
linkpath_coder (struct tar_stat_info const *st, char const *keyword,
- struct xheader *xhdr, void *data __attribute__ ((unused)))
+ struct xheader *xhdr, void const *data __attribute__ ((unused)))
{
code_string (st->link_name, keyword, xhdr);
}
static void
-linkpath_decoder (struct tar_stat_info *st, char const *arg)
+linkpath_decoder (struct tar_stat_info *st,
+ char const *keyword __attribute__((unused)),
+ char const *arg,
+ size_t size __attribute__((unused)))
{
decode_string (&st->link_name, arg);
}
static void
ctime_coder (struct tar_stat_info const *st, char const *keyword,
- struct xheader *xhdr, void *data __attribute__ ((unused)))
+ struct xheader *xhdr, void const *data __attribute__ ((unused)))
{
- code_time (st->stat.st_ctime, st->ctime_nsec, keyword, xhdr);
+ code_time (st->ctime, keyword, xhdr);
}
static void
-ctime_decoder (struct tar_stat_info *st, char const *arg)
+ctime_decoder (struct tar_stat_info *st,
+ char const *keyword,
+ char const *arg,
+ size_t size __attribute__((unused)))
{
- decode_time (arg, &st->stat.st_ctime, &st->ctime_nsec);
+ struct timespec ts;
+ if (decode_time (&ts, arg, keyword))
+ st->ctime = ts;
}
static void
mtime_coder (struct tar_stat_info const *st, char const *keyword,
- struct xheader *xhdr, void *data __attribute__ ((unused)))
+ struct xheader *xhdr, void const *data)
{
- code_time (st->stat.st_mtime, st->mtime_nsec, keyword, xhdr);
+ struct timespec const *mtime = data;
+ code_time (mtime ? *mtime : st->mtime, keyword, xhdr);
}
static void
-mtime_decoder (struct tar_stat_info *st, char const *arg)
+mtime_decoder (struct tar_stat_info *st,
+ char const *keyword,
+ char const *arg,
+ size_t size __attribute__((unused)))
{
- decode_time (arg, &st->stat.st_mtime, &st->mtime_nsec);
+ struct timespec ts;
+ if (decode_time (&ts, arg, keyword))
+ st->mtime = ts;
}
static void
path_coder (struct tar_stat_info const *st, char const *keyword,
- struct xheader *xhdr, void *data __attribute__ ((unused)))
+ struct xheader *xhdr, void const *data __attribute__ ((unused)))
{
code_string (st->file_name, keyword, xhdr);
}
static void
-path_decoder (struct tar_stat_info *st, char const *arg)
+path_decoder (struct tar_stat_info *st,
+ char const *keyword __attribute__((unused)),
+ char const *arg,
+ size_t size __attribute__((unused)))
{
decode_string (&st->orig_file_name, arg);
decode_string (&st->file_name, arg);
static void
size_coder (struct tar_stat_info const *st, char const *keyword,
- struct xheader *xhdr, void *data __attribute__ ((unused)))
+ struct xheader *xhdr, void const *data __attribute__ ((unused)))
{
code_num (st->stat.st_size, keyword, xhdr);
}
static void
-size_decoder (struct tar_stat_info *st, char const *arg)
+size_decoder (struct tar_stat_info *st,
+ char const *keyword,
+ char const *arg,
+ size_t size __attribute__((unused)))
{
uintmax_t u;
- if (xstrtoumax (arg, NULL, 10, &u, "") == LONGINT_OK)
- st->archive_file_size = st->stat.st_size = u;
+ if (decode_num (&u, arg, TYPE_MAXIMUM (off_t), keyword))
+ st->stat.st_size = u;
}
static void
uid_coder (struct tar_stat_info const *st, char const *keyword,
- struct xheader *xhdr, void *data __attribute__ ((unused)))
+ struct xheader *xhdr, void const *data __attribute__ ((unused)))
{
code_num (st->stat.st_uid, keyword, xhdr);
}
static void
-uid_decoder (struct tar_stat_info *st, char const *arg)
+uid_decoder (struct tar_stat_info *st,
+ char const *keyword,
+ char const *arg,
+ size_t size __attribute__((unused)))
{
uintmax_t u;
- if (xstrtoumax (arg, NULL, 10, &u, "") == LONGINT_OK)
+ if (decode_num (&u, arg, TYPE_MAXIMUM (uid_t), keyword))
st->stat.st_uid = u;
}
static void
uname_coder (struct tar_stat_info const *st, char const *keyword,
- struct xheader *xhdr, void *data __attribute__ ((unused)))
+ struct xheader *xhdr, void const *data __attribute__ ((unused)))
{
code_string (st->uname, keyword, xhdr);
}
static void
-uname_decoder (struct tar_stat_info *st, char const *arg)
+uname_decoder (struct tar_stat_info *st,
+ char const *keyword __attribute__((unused)),
+ char const *arg,
+ size_t size __attribute__((unused)))
{
decode_string (&st->uname, arg);
}
static void
sparse_size_coder (struct tar_stat_info const *st, char const *keyword,
- struct xheader *xhdr, void *data)
+ struct xheader *xhdr, void const *data)
{
size_coder (st, keyword, xhdr, data);
}
static void
-sparse_size_decoder (struct tar_stat_info *st, char const *arg)
+sparse_size_decoder (struct tar_stat_info *st,
+ char const *keyword,
+ char const *arg,
+ size_t size __attribute__((unused)))
{
uintmax_t u;
- if (xstrtoumax (arg, NULL, 10, &u, "") == LONGINT_OK)
+ if (decode_num (&u, arg, TYPE_MAXIMUM (off_t), keyword))
st->stat.st_size = u;
}
static void
sparse_numblocks_coder (struct tar_stat_info const *st, char const *keyword,
struct xheader *xhdr,
- void *data __attribute__ ((unused)))
+ void const *data __attribute__ ((unused)))
{
code_num (st->sparse_map_avail, keyword, xhdr);
}
static void
-sparse_numblocks_decoder (struct tar_stat_info *st, char const *arg)
+sparse_numblocks_decoder (struct tar_stat_info *st,
+ char const *keyword,
+ char const *arg,
+ size_t size __attribute__((unused)))
{
uintmax_t u;
- if (xstrtoumax (arg, NULL, 10, &u, "") == LONGINT_OK)
+ if (decode_num (&u, arg, SIZE_MAX, keyword))
{
st->sparse_map_size = u;
- st->sparse_map = calloc(st->sparse_map_size, sizeof(st->sparse_map[0]));
+ st->sparse_map = xcalloc (u, sizeof st->sparse_map[0]);
st->sparse_map_avail = 0;
}
}
static void
sparse_offset_coder (struct tar_stat_info const *st, char const *keyword,
- struct xheader *xhdr, void *data)
+ struct xheader *xhdr, void const *data)
{
- size_t i = *(size_t*)data;
- code_num (st->sparse_map[i].offset, keyword, xhdr);
+ size_t const *pi = data;
+ code_num (st->sparse_map[*pi].offset, keyword, xhdr);
}
static void
-sparse_offset_decoder (struct tar_stat_info *st, char const *arg)
+sparse_offset_decoder (struct tar_stat_info *st,
+ char const *keyword,
+ char const *arg,
+ size_t size __attribute__((unused)))
{
uintmax_t u;
- if (xstrtoumax (arg, NULL, 10, &u, "") == LONGINT_OK)
- st->sparse_map[st->sparse_map_avail].offset = u;
+ if (decode_num (&u, arg, TYPE_MAXIMUM (off_t), keyword))
+ {
+ if (st->sparse_map_avail < st->sparse_map_size)
+ st->sparse_map[st->sparse_map_avail].offset = u;
+ else
+ ERROR ((0, 0, _("Malformed extended header: excess %s=%s"),
+ "GNU.sparse.offset", arg));
+ }
}
static void
sparse_numbytes_coder (struct tar_stat_info const *st, char const *keyword,
- struct xheader *xhdr, void *data)
+ struct xheader *xhdr, void const *data)
{
- size_t i = *(size_t*)data;
- code_num (st->sparse_map[i].numbytes, keyword, xhdr);
+ size_t const *pi = data;
+ code_num (st->sparse_map[*pi].numbytes, keyword, xhdr);
}
static void
-sparse_numbytes_decoder (struct tar_stat_info *st, char const *arg)
+sparse_numbytes_decoder (struct tar_stat_info *st,
+ char const *keyword,
+ char const *arg,
+ size_t size __attribute__((unused)))
{
uintmax_t u;
- if (xstrtoumax (arg, NULL, 10, &u, "") == LONGINT_OK)
+ if (decode_num (&u, arg, TYPE_MAXIMUM (off_t), keyword))
+ {
+ if (st->sparse_map_avail < st->sparse_map_size)
+ st->sparse_map[st->sparse_map_avail++].numbytes = u;
+ else
+ ERROR ((0, 0, _("Malformed extended header: excess %s=%s"),
+ keyword, arg));
+ }
+}
+
+static void
+sparse_map_decoder (struct tar_stat_info *st,
+ char const *keyword,
+ char const *arg,
+ size_t size __attribute__((unused)))
+{
+ int offset = 1;
+
+ st->sparse_map_avail = 0;
+ while (1)
{
- if (st->sparse_map_avail == st->sparse_map_size)
+ uintmax_t u;
+ char *delim;
+ struct sp_array e;
+
+ if (!ISDIGIT (*arg))
+ {
+ ERROR ((0, 0, _("Malformed extended header: invalid %s=%s"),
+ keyword, arg));
+ return;
+ }
+
+ errno = 0;
+ u = strtoumax (arg, &delim, 10);
+ if (offset)
{
- st->sparse_map_size *= 2;
- st->sparse_map = xrealloc (st->sparse_map,
- st->sparse_map_size
- * sizeof st->sparse_map[0]);
+ e.offset = u;
+ if (!(u == e.offset && errno != ERANGE))
+ {
+ out_of_range_header (keyword, arg, 0, TYPE_MAXIMUM (off_t));
+ return;
+ }
}
- st->sparse_map[st->sparse_map_avail++].numbytes = u;
+ else
+ {
+ e.numbytes = u;
+ if (!(u == e.numbytes && errno != ERANGE))
+ {
+ out_of_range_header (keyword, arg, 0, TYPE_MAXIMUM (off_t));
+ return;
+ }
+ if (st->sparse_map_avail < st->sparse_map_size)
+ st->sparse_map[st->sparse_map_avail++] = e;
+ else
+ {
+ ERROR ((0, 0, _("Malformed extended header: excess %s=%s"),
+ keyword, arg));
+ return;
+ }
+ }
+
+ offset = !offset;
+
+ if (*delim == 0)
+ break;
+ else if (*delim != ',')
+ {
+ ERROR ((0, 0,
+ _("Malformed extended header: invalid %s: unexpected delimiter %c"),
+ keyword, *delim));
+ return;
+ }
+
+ arg = delim + 1;
}
+
+ if (!offset)
+ ERROR ((0, 0,
+ _("Malformed extended header: invalid %s: odd number of values"),
+ keyword));
+}
+
+static void
+dumpdir_coder (struct tar_stat_info const *st, char const *keyword,
+ struct xheader *xhdr, void const *data)
+{
+ xheader_print_n (xhdr, keyword, data, dumpdir_size (data));
+}
+
+static void
+dumpdir_decoder (struct tar_stat_info *st,
+ char const *keyword __attribute__((unused)),
+ char const *arg,
+ size_t size)
+{
+ st->dumpdir = xmalloc (size);
+ memcpy (st->dumpdir, arg, size);
+}
+
+static void
+volume_label_coder (struct tar_stat_info const *st, char const *keyword,
+ struct xheader *xhdr, void const *data)
+{
+ code_string (data, keyword, xhdr);
+}
+
+static void
+volume_label_decoder (struct tar_stat_info *st,
+ char const *keyword __attribute__((unused)),
+ char const *arg,
+ size_t size __attribute__((unused)))
+{
+ decode_string (&volume_label, arg);
+}
+
+static void
+volume_size_coder (struct tar_stat_info const *st, char const *keyword,
+ struct xheader *xhdr, void const *data)
+{
+ off_t const *v = data;
+ code_num (*v, keyword, xhdr);
+}
+
+static void
+volume_size_decoder (struct tar_stat_info *st,
+ char const *keyword,
+ char const *arg, size_t size)
+{
+ uintmax_t u;
+ if (decode_num (&u, arg, TYPE_MAXIMUM (uintmax_t), keyword))
+ continued_file_size = u;
+}
+
+/* FIXME: Merge with volume_size_coder */
+static void
+volume_offset_coder (struct tar_stat_info const *st, char const *keyword,
+ struct xheader *xhdr, void const *data)
+{
+ off_t const *v = data;
+ code_num (*v, keyword, xhdr);
+}
+
+static void
+volume_offset_decoder (struct tar_stat_info *st,
+ char const *keyword,
+ char const *arg, size_t size)
+{
+ uintmax_t u;
+ if (decode_num (&u, arg, TYPE_MAXIMUM (uintmax_t), keyword))
+ continued_file_offset = u;
+}
+
+static void
+volume_filename_decoder (struct tar_stat_info *st,
+ char const *keyword __attribute__((unused)),
+ char const *arg,
+ size_t size __attribute__((unused)))
+{
+ decode_string (&continued_file_name, arg);
+}
+
+static void
+sparse_major_coder (struct tar_stat_info const *st, char const *keyword,
+ struct xheader *xhdr, void const *data)
+{
+ code_num (st->sparse_major, keyword, xhdr);
+}
+
+static void
+sparse_major_decoder (struct tar_stat_info *st,
+ char const *keyword,
+ char const *arg,
+ size_t size)
+{
+ uintmax_t u;
+ if (decode_num (&u, arg, TYPE_MAXIMUM (unsigned), keyword))
+ st->sparse_major = u;
+}
+
+static void
+sparse_minor_coder (struct tar_stat_info const *st, char const *keyword,
+ struct xheader *xhdr, void const *data)
+{
+ code_num (st->sparse_minor, keyword, xhdr);
+}
+
+static void
+sparse_minor_decoder (struct tar_stat_info *st,
+ char const *keyword,
+ char const *arg,
+ size_t size)
+{
+ uintmax_t u;
+ if (decode_num (&u, arg, TYPE_MAXIMUM (unsigned), keyword))
+ st->sparse_minor = u;
}
struct xhdr_tab const xhdr_tab[] = {
- { "atime", atime_coder, atime_decoder, false },
- { "comment", dummy_coder, dummy_decoder, false },
- { "charset", dummy_coder, dummy_decoder, false },
- { "ctime", ctime_coder, ctime_decoder, false },
- { "gid", gid_coder, gid_decoder, false },
- { "gname", gname_coder, gname_decoder, false },
- { "linkpath", linkpath_coder, linkpath_decoder, false },
- { "mtime", mtime_coder, mtime_decoder, false },
- { "path", path_coder, path_decoder, false },
- { "size", size_coder, size_decoder, false },
- { "uid", uid_coder, uid_decoder, false },
- { "uname", uname_coder, uname_decoder, false },
+ { "atime", atime_coder, atime_decoder, 0 },
+ { "comment", dummy_coder, dummy_decoder, 0 },
+ { "charset", dummy_coder, dummy_decoder, 0 },
+ { "ctime", ctime_coder, ctime_decoder, 0 },
+ { "gid", gid_coder, gid_decoder, 0 },
+ { "gname", gname_coder, gname_decoder, 0 },
+ { "linkpath", linkpath_coder, linkpath_decoder, 0 },
+ { "mtime", mtime_coder, mtime_decoder, 0 },
+ { "path", path_coder, path_decoder, 0 },
+ { "size", size_coder, size_decoder, 0 },
+ { "uid", uid_coder, uid_decoder, 0 },
+ { "uname", uname_coder, uname_decoder, 0 },
/* Sparse file handling */
- { "GNU.sparse.size", sparse_size_coder, sparse_size_decoder, true },
+ { "GNU.sparse.name", path_coder, path_decoder,
+ XHDR_PROTECTED },
+ { "GNU.sparse.major", sparse_major_coder, sparse_major_decoder,
+ XHDR_PROTECTED },
+ { "GNU.sparse.minor", sparse_minor_coder, sparse_minor_decoder,
+ XHDR_PROTECTED },
+ { "GNU.sparse.realsize", sparse_size_coder, sparse_size_decoder,
+ XHDR_PROTECTED },
{ "GNU.sparse.numblocks", sparse_numblocks_coder, sparse_numblocks_decoder,
- true },
+ XHDR_PROTECTED },
+
+ /* tar 1.14 - 1.15.90 keywords. */
+ { "GNU.sparse.size", sparse_size_coder, sparse_size_decoder,
+ XHDR_PROTECTED },
+ /* tar 1.14 - 1.15.1 keywords. Multiple instances of these appeared in 'x'
+ headers, and each of them was meaningful. It confilcted with POSIX specs,
+ which requires that "when extended header records conflict, the last one
+ given in the header shall take precedence." */
{ "GNU.sparse.offset", sparse_offset_coder, sparse_offset_decoder,
- true },
+ XHDR_PROTECTED },
{ "GNU.sparse.numbytes", sparse_numbytes_coder, sparse_numbytes_decoder,
- true },
+ XHDR_PROTECTED },
+ /* tar 1.15.90 keyword, introduced to remove the above-mentioned conflict. */
+ { "GNU.sparse.map", NULL /* Unused, see pax_dump_header() */,
+ sparse_map_decoder, 0 },
-#if 0 /* GNU private keywords (not yet implemented) */
+ { "GNU.dumpdir", dumpdir_coder, dumpdir_decoder,
+ XHDR_PROTECTED },
- /* The next directory entry actually contains the names of files
- that were in the directory at the time the dump was made.
- Supersedes GNUTYPE_DUMPDIR header type. */
- { "GNU.dump.name", dump_name_coder, dump_name_decoder, false },
- { "GNU.dump.status", dump_status_coder, dump_status_decoder, false },
-
- /* Keeps the tape/volume header. May be present only in the global headers.
+ /* Keeps the tape/volume label. May be present only in the global headers.
Equivalent to GNUTYPE_VOLHDR. */
- { "GNU.volume.header", volume_header_coder, volume_header_decoder, false },
+ { "GNU.volume.label", volume_label_coder, volume_label_decoder,
+ XHDR_PROTECTED | XHDR_GLOBAL },
/* These may be present in a first global header of the archive.
They provide the same functionality as GNUTYPE_MULTIVOL header.
otherwise kept in the size field of a multivolume header. The
GNU.volume.offset keeps the offset of the start of this volume,
otherwise kept in oldgnu_header.offset. */
- { "GNU.volume.size", volume_size_coder, volume_size_decoder, false },
- { "GNU.volume.offset", volume_offset_coder, volume_offset_decoder, false },
-#endif
-
- { NULL, NULL, NULL, false }
+ { "GNU.volume.filename", volume_label_coder, volume_filename_decoder,
+ XHDR_PROTECTED | XHDR_GLOBAL },
+ { "GNU.volume.size", volume_size_coder, volume_size_decoder,
+ XHDR_PROTECTED | XHDR_GLOBAL },
+ { "GNU.volume.offset", volume_offset_coder, volume_offset_decoder,
+ XHDR_PROTECTED | XHDR_GLOBAL },
+
+ { NULL, NULL, NULL, 0 }
};