-/* POSIX extended and STAR headers.
+/* POSIX extended headers for tar.
- Copyright (C) 2003 Free Software Foundation, Inc.
+ Copyright (C) 2003, 2004, 2005 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
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 <system.h>
-#include <grp.h>
+#include <fnmatch.h>
#include <hash.h>
-#include <pwd.h>
+#include <inttostr.h>
#include <quotearg.h>
+#include <stpcpy.h>
#include "common.h"
-#define obstack_chunk_alloc xmalloc
-#define obstack_chunk_free free
-#include <obstack.h>
+#include <fnmatch.h>
+#if !HAVE_DECL_STRTOIMAX && !defined strtoimax
+intmax_t strtoimax ();
+#endif
+#if !HAVE_DECL_STRTOUMAX && !defined strtoumax
+uintmax_t strtoumax ();
+#endif
+
+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;
+/* FIXME: Possibly it should be reset after changing the volume.
+ POSIX %n specification says that it is expanded to the sequence
+ number of current global header in *the* archive. However, for
+ multi-volume archives this will yield duplicate header names
+ in different volumes, which I'd like to avoid. The best way
+ to solve this would be to use per-archive header count as required
+ by POSIX *and* set globexthdr.name to, say,
+ $TMPDIR/GlobalHead.%p.$NUMVOLUME.%n.
+
+ However it should wait until buffer.c is finally rewritten */
+
+enum { BILLION = 1000000000, LOG10_BILLION = 9 };
+
+\f
+/* Keyword options */
+
+struct keyword_list
+{
+ struct keyword_list *next;
+ char *pattern;
+ char *value;
+};
+
+
+/* List of keyword patterns set by delete= option */
+static struct keyword_list *keyword_pattern_list;
+
+/* List of keyword/value pairs set by `keyword=value' option */
+static struct keyword_list *keyword_global_override_list;
+
+/* List of keyword/value pairs set by `keyword:=value' option */
+static struct keyword_list *keyword_override_list;
+
+/* List of keyword/value pairs decoded from the last 'g' type header */
+static struct keyword_list *global_header_override_list;
+
+/* Template for the name field of an 'x' type header */
+static char *exthdr_name;
+
+/* Template for the name field of a 'g' type header */
+static char *globexthdr_name;
+
+static bool
+xheader_keyword_deleted_p (const char *kw)
+{
+ struct keyword_list *kp;
+
+ for (kp = keyword_pattern_list; kp; kp = kp->next)
+ if (fnmatch (kp->pattern, kw, 0) == 0)
+ return true;
+ return false;
+}
+
+static bool
+xheader_keyword_override_p (const char *keyword)
+{
+ struct keyword_list *kp;
+
+ for (kp = keyword_override_list; kp; kp = kp->next)
+ if (strcmp (kp->pattern, keyword) == 0)
+ return true;
+ return false;
+}
+
+static void
+xheader_list_append (struct keyword_list **root, char const *kw,
+ char const *value)
+{
+ struct keyword_list *kp = xmalloc (sizeof *kp);
+ kp->pattern = xstrdup (kw);
+ kp->value = value ? xstrdup (value) : NULL;
+ kp->next = *root;
+ *root = kp;
+}
+
+static void
+xheader_list_destroy (struct keyword_list **root)
+{
+ if (root)
+ {
+ struct keyword_list *kw = *root;
+ while (kw)
+ {
+ struct keyword_list *next = kw->next;
+ free (kw->pattern);
+ free (kw->value);
+ free (kw);
+ kw = next;
+ }
+ *root = NULL;
+ }
+}
+
+static void
+xheader_set_single_keyword (char *kw)
+{
+ USAGE_ERROR ((0, 0, _("Keyword %s is unknown or not yet imlemented"), kw));
+}
+
+static void
+xheader_set_keyword_equal (char *kw, char *eq)
+{
+ bool global = true;
+ char *p = eq;
+
+ if (eq[-1] == ':')
+ {
+ p--;
+ global = false;
+ }
+
+ while (p > kw && isspace (*p))
+ p--;
+
+ *p = 0;
+
+ for (p = eq + 1; *p && isspace (*p); p++)
+ ;
+
+ if (strcmp (kw, "delete") == 0)
+ {
+ if (xheader_protected_pattern_p (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 (xheader_protected_keyword_p (kw))
+ USAGE_ERROR ((0, 0, _("Keyword %s cannot be overridden"), kw));
+ if (global)
+ xheader_list_append (&keyword_global_override_list, kw, p);
+ else
+ xheader_list_append (&keyword_override_list, kw, p);
+ }
+}
+
+void
+xheader_set_option (char *string)
+{
+ char *token;
+ for (token = strtok (string, ","); token; token = strtok (NULL, ","))
+ {
+ char *p = strchr (token, '=');
+ if (!p)
+ xheader_set_single_keyword (token);
+ else
+ xheader_set_keyword_equal (token, p);
+ }
+}
+
+/*
+ string Includes: Replaced By:
+ %d The directory name of the file,
+ equivalent to the result of the
+ dirname utility on the translated
+ file name.
+ %f The filename of the file, equivalent
+ to the result of the basename
+ utility on the translated file name.
+ %p The process ID of the pax process.
+ %% A '%' character. */
+
+static char *
+xheader_format_name (struct tar_stat_info *st, const char *fmt, bool allow_n)
+{
+ char *buf;
+ size_t len = strlen (fmt);
+ char *q;
+ const char *p;
+ char *dir = NULL;
+ char *base = NULL;
+ char pidbuf[UINTMAX_STRSIZE_BOUND];
+ char const *pptr;
+ char nbuf[UINTMAX_STRSIZE_BOUND];
+ char const *nptr = NULL;
+
+ for (p = fmt; *p && (p = strchr (p, '%')); )
+ {
+ switch (p[1])
+ {
+ case '%':
+ len--;
+ break;
+
+ case 'd':
+ if (st)
+ {
+ dir = safer_name_suffix (dir_name (st->orig_file_name),
+ false, absolute_names_option);
+ len += strlen (dir) - 1;
+ }
+ break;
+
+ case 'f':
+ if (st)
+ {
+ base = base_name (st->orig_file_name);
+ len += strlen (base) - 1;
+ }
+ break;
+
+ case 'p':
+ pptr = umaxtostr (getpid (), pidbuf);
+ len += pidbuf + sizeof pidbuf - 1 - pptr - 1;
+ break;
+
+ case 'n':
+ if (allow_n)
+ {
+ nptr = umaxtostr (global_header_count + 1, nbuf);
+ len += nbuf + sizeof nbuf - 1 - nptr - 1;
+ }
+ break;
+ }
+ p++;
+ }
+
+ buf = xmalloc (len + 1);
+ for (q = buf, p = fmt; *p; )
+ {
+ if (*p == '%')
+ {
+ switch (p[1])
+ {
+ case '%':
+ *q++ = *p++;
+ p++;
+ break;
+
+ case 'd':
+ if (dir)
+ q = stpcpy (q, dir);
+ p += 2;
+ break;
+
+ case 'f':
+ if (base)
+ q = stpcpy (q, base);
+ p += 2;
+ break;
+
+ case 'p':
+ q = stpcpy (q, pptr);
+ p += 2;
+ break;
+
+ case 'n':
+ if (nptr)
+ {
+ q = stpcpy (q, nptr);
+ p += 2;
+ }
+ /* else fall through */
+
+ default:
+ *q++ = *p++;
+ if (*p)
+ *q++ = *p++;
+ }
+ }
+ else
+ *q++ = *p++;
+ }
+
+ /* Do not allow it to end in a slash */
+ while (q > buf && ISSLASH (q[-1]))
+ q--;
+ *q = 0;
+ return buf;
+}
+
+char *
+xheader_xhdr_name (struct tar_stat_info *st)
+{
+ if (!exthdr_name)
+ assign_string (&exthdr_name, "%d/PaxHeaders.%p/%f");
+ return xheader_format_name (st, exthdr_name, false);
+}
+
+#define GLOBAL_HEADER_TEMPLATE "/GlobalHead.%p.%n"
+
+char *
+xheader_ghdr_name (void)
+{
+ if (!globexthdr_name)
+ {
+ size_t len;
+ const char *tmp = getenv ("TMPDIR");
+ if (!tmp)
+ tmp = "/tmp";
+ len = strlen (tmp) + sizeof (GLOBAL_HEADER_TEMPLATE); /* Includes nul */
+ globexthdr_name = xmalloc (len);
+ strcpy(globexthdr_name, tmp);
+ strcat(globexthdr_name, GLOBAL_HEADER_TEMPLATE);
+ }
+
+ return xheader_format_name (NULL, globexthdr_name, true);
+}
+
+void
+xheader_write (char type, char *name, struct xheader *xhdr)
+{
+ union block *header;
+ size_t size;
+ char *p;
+
+ size = xhdr->size;
+ header = start_private_header (name, size);
+ header->header.typeflag = type;
+
+ simple_finish_header (header);
+
+ p = xhdr->buffer;
+
+ do
+ {
+ size_t len;
+
+ header = find_next_block ();
+ len = BLOCKSIZE;
+ if (len > size)
+ len = size;
+ memcpy (header->buffer, p, len);
+ if (len < BLOCKSIZE)
+ memset (header->buffer + len, 0, BLOCKSIZE - len);
+ p += len;
+ size -= len;
+ set_next_block_after (header);
+ }
+ while (size > 0);
+ xheader_destroy (xhdr);
+}
+
+void
+xheader_write_global (void)
+{
+ char *name;
+ struct keyword_list *kp;
+
+ if (!keyword_global_override_list)
+ return;
+
+ 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++;
+}
+
+\f
/* General Interface */
struct xhdr_tab
{
char const *keyword;
- void (*coder) (struct tar_stat_info const *, char const *, struct xheader *);
+ void (*coder) (struct tar_stat_info const *, char const *,
+ struct xheader *, void *data);
void (*decoder) (struct tar_stat_info *, char const *);
+ bool protect;
};
-static struct xhdr_tab const xhdr_tab[];
+/* This declaration must be extern, because ISO C99 section 6.9.2
+ prohibits a tentative definition that has both internal linkage and
+ incomplete type. If we made it static, we'd have to declare its
+ size which would be a maintenance pain; if we put its initializer
+ here, we'd need a boatload of forward declarations, which would be
+ even more of a pain. */
+extern struct xhdr_tab const xhdr_tab[];
static struct xhdr_tab const *
locate_handler (char const *keyword)
return NULL;
}
-/* Decodes a single extended header record. Advances P to the next
- record.
- Returns true on success, false otherwise. */
static bool
-decode_record (char **p, struct tar_stat_info *st)
+xheader_protected_pattern_p (const char *pattern)
+{
+ struct xhdr_tab const *p;
+
+ for (p = xhdr_tab; p->keyword; p++)
+ if (p->protect && fnmatch (pattern, p->keyword, 0) == 0)
+ return true;
+ return false;
+}
+
+static bool
+xheader_protected_keyword_p (const char *keyword)
+{
+ struct xhdr_tab const *p;
+
+ for (p = xhdr_tab; p->keyword; p++)
+ if (p->protect && strcmp (p->keyword, keyword) == 0)
+ return true;
+ return false;
+}
+
+/* Decode a single extended header record, advancing *PTR to the next record.
+ Return true on success, false otherwise. */
+static bool
+decode_record (char **ptr,
+ void (*handler) (void *, char const *, char const *),
+ void *data)
{
- size_t len;
+ char *start = *ptr;
+ char *p = start;
+ unsigned long int len;
+ char *len_lim;
char const *keyword;
- char *eqp;
- char *start = *p;
- struct xhdr_tab const *t;
+ char *nextp;
+ size_t len_max = extended_header.buffer + extended_header.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 = strtoul (p, &len_lim, 10);
- 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;
}
- eqp = *p;
- **p = 0;
- t = locate_handler (keyword);
- if (t)
+ nextp = start + len;
+
+ for (p = len_lim; *p == ' ' || *p == '\t'; p++)
+ continue;
+ if (p == len_lim)
{
- char endc;
- char *value;
+ ERROR ((0, 0,
+ _("Malformed extended header: missing blank after length")));
+ return false;
+ }
- value = ++*p;
+ keyword = p;
+ p = strchr (p, '=');
+ if (! (p && p < nextp))
+ {
+ ERROR ((0, 0, _("Malformed extended header: missing equal sign")));
+ return false;
+ }
- endc = start[len-1];
- start[len-1] = 0;
- t->decoder (st, value);
- start[len-1] = endc;
+ if (nextp[-1] != '\n')
+ {
+ ERROR ((0, 0, _("Malformed extended header: missing newline")));
+ return false;
}
- *eqp = '=';
- *p = &start[len];
+
+ *p = nextp[-1] = '\0';
+ handler (data, keyword, p + 1);
+ *p = '=';
+ nextp[-1] = '\n';
+ *ptr = nextp;
return true;
}
+static void
+run_override_list (struct keyword_list *kp, struct tar_stat_info *st)
+{
+ for (; kp; kp = kp->next)
+ {
+ struct xhdr_tab const *t = locate_handler (kp->pattern);
+ if (t)
+ t->decoder (st, kp->value);
+ }
+}
+
+static void
+decx (void *data, char const *keyword, char const *value)
+{
+ struct xhdr_tab const *t;
+ struct tar_stat_info *st = data;
+
+ if (xheader_keyword_deleted_p (keyword)
+ || xheader_keyword_override_p (keyword))
+ return;
+
+ t = locate_handler (keyword);
+ if (t)
+ t->decoder (st, value);
+}
+
void
xheader_decode (struct tar_stat_info *st)
{
- char *p = extended_header.buffer + BLOCKSIZE;
- char *endp = &extended_header.buffer[extended_header.size-1];
+ run_override_list (keyword_global_override_list, st);
+ run_override_list (global_header_override_list, st);
- while (p < endp)
- if (!decode_record (&p, st))
- break;
+ if (extended_header.size)
+ {
+ char *p = extended_header.buffer + BLOCKSIZE;
+ while (decode_record (&p, decx, st))
+ continue;
+ }
+ run_override_list (keyword_override_list, st);
+}
+
+static void
+decg (void *data, char const *keyword, char const *value)
+{
+ struct keyword_list **kwl = data;
+ xheader_list_append (kwl, keyword, value);
}
void
-xheader_store (char const *keyword, struct tar_stat_info const *st)
+xheader_decode_global (void)
+{
+ if (extended_header.size)
+ {
+ char *p = extended_header.buffer + BLOCKSIZE;
+
+ xheader_list_destroy (&global_header_override_list);
+ while (decode_record (&p, decg, &global_header_override_list))
+ continue;
+ }
+}
+
+static void
+extended_header_init (void)
+{
+ if (!extended_header.stk)
+ {
+ extended_header.stk = xmalloc (sizeof *extended_header.stk);
+ obstack_init (extended_header.stk);
+ }
+}
+
+void
+xheader_store (char const *keyword, struct tar_stat_info const *st, void *data)
{
struct xhdr_tab const *t;
t = locate_handler (keyword);
if (!t)
return;
- if (!extended_header.stk)
- {
- extended_header.stk = xmalloc (sizeof *extended_header.stk);
- obstack_init (extended_header.stk);
- }
- t->coder (st, keyword, &extended_header);
+ if (xheader_keyword_deleted_p (keyword)
+ || xheader_keyword_override_p (keyword))
+ return;
+ extended_header_init ();
+ t->coder (st, keyword, &extended_header, data);
}
void
extended_header.size = size;
nblocks = (size + BLOCKSIZE - 1) / BLOCKSIZE;
extended_header.buffer = xmalloc (size + 1);
+ extended_header.buffer[size] = '\0';
do
{
if (len > BLOCKSIZE)
len = BLOCKSIZE;
-
+
memcpy (&extended_header.buffer[j], p->buffer, len);
set_next_block_after (p);
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)
{
size_t len = strlen (keyword) + strlen (value) + 3; /* ' ' + '=' + '\n' */
- size_t p, n = 0;
- char nbuf[100];
+ 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_grow (xhdr->stk, np, n);
obstack_1grow (xhdr->stk, ' ');
obstack_grow (xhdr->stk, keyword, strlen (keyword));
obstack_1grow (xhdr->stk, '=');
void
xheader_finish (struct xheader *xhdr)
{
+ struct keyword_list *kp;
+
+ 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);
\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)
{
- xheader_print (xhdr, keyword, string);
+ char *outstr;
+ if (!utf8_convert (true, string, &outstr))
+ {
+ /* FIXME: report error */
+ outstr = xstrdup (string);
+ }
+ xheader_print (xhdr, keyword, outstr);
+ free (outstr);
+}
+
+static void
+decode_string (char **string, char const *arg)
+{
+ if (*string)
+ {
+ free (*string);
+ *string = NULL;
+ }
+ if (!utf8_convert (false, arg, string))
+ {
+ /* FIXME: report error and act accordingly to --pax invalid=UTF-8 */
+ assign_string (string, arg);
+ }
}
static void
-code_time (time_t t, char const *keyword, struct xheader *xhdr)
+code_time (struct timespec t, char const *keyword, struct xheader *xhdr)
+{
+ time_t s = t.tv_sec;
+ int ns = t.tv_nsec;
+ char sbuf[1/*"-"*/ + UINTMAX_STRSIZE_BOUND + 1/*"."*/ + LOG10_BILLION];
+ char *np;
+ bool negative = s < 0;
+
+ if (negative && ns != 0)
+ {
+ s++;
+ ns = BILLION - ns;
+ }
+
+ np = umaxtostr (negative ? - (uintmax_t) s : (uintmax_t) s, sbuf + 1);
+ if (negative)
+ *--np = '-';
+ code_ns_fraction (ns, sbuf + UINTMAX_STRSIZE_BOUND);
+ xheader_print (xhdr, keyword, np);
+}
+
+static bool
+decode_time (struct timespec *ts, char const *arg, char const *keyword)
{
- char sbuf[100];
- size_t s = format_uintmax (t, NULL, 0);
- format_uintmax (t, sbuf, s);
- sbuf[s++] = '.';
- format_uintmax (0, sbuf + s, 9);
- sbuf[s+9] = 0;
- xheader_print (xhdr, keyword, sbuf);
+ time_t s;
+ unsigned long int ns = 0;
+ char *p;
+ char *arg_lim;
+ bool negative = *arg == '-';
+
+ errno = 0;
+
+ if (ISDIGIT (arg[negative]))
+ {
+ if (negative)
+ {
+ intmax_t i = strtoimax (arg, &arg_lim, 10);
+ if (TYPE_SIGNED (time_t) ? i < TYPE_MINIMUM (time_t) : i < 0)
+ goto out_of_range;
+ s = i;
+ }
+ else
+ {
+ uintmax_t i = strtoumax (arg, &arg_lim, 10);
+ if (TYPE_MAXIMUM (time_t) < i)
+ goto out_of_range;
+ s = i;
+ }
+
+ p = arg_lim;
+
+ if (errno == ERANGE)
+ goto out_of_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))
+ goto out_of_range;
+ s--;
+ ns = BILLION - ns;
+ }
+ }
+ }
+
+ if (! *p)
+ {
+ ts->tv_sec = s;
+ ts->tv_nsec = ns;
+ return true;
+ }
+ }
+
+ ERROR ((0, 0, _("Malformed extended header: invalid %s=%s"),
+ keyword, arg));
+ return false;
+
+ out_of_range:
+ out_of_range_header (keyword, arg, - (uintmax_t) TYPE_MINIMUM (time_t),
+ TYPE_MAXIMUM (time_t));
+ return false;
}
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, char const *keyword,
- struct xheader *xhdr)
+dummy_coder (struct tar_stat_info const *st __attribute__ ((unused)),
+ char const *keyword __attribute__ ((unused)),
+ struct xheader *xhdr __attribute__ ((unused)),
+ void *data __attribute__ ((unused)))
{
}
static void
-dummy_decoder (struct tar_stat_info *st, char const *arg)
+dummy_decoder (struct tar_stat_info *st __attribute__ ((unused)),
+ char const *arg __attribute__ ((unused)))
{
}
static void
atime_coder (struct tar_stat_info const *st, char const *keyword,
- struct xheader *xhdr)
+ struct xheader *xhdr, void *data __attribute__ ((unused)))
{
- code_time (st->stat.st_atime, keyword, xhdr);
+ code_time (get_stat_atime (&st->stat), keyword, xhdr);
}
static void
atime_decoder (struct tar_stat_info *st, char const *arg)
{
- st->stat.st_atime = strtoul (arg, NULL, 0);
+ struct timespec ts;
+ if (decode_time (&ts, arg, "atime"))
+ set_stat_atime (&st->stat, ts);
}
static void
gid_coder (struct tar_stat_info const *st, char const *keyword,
- struct xheader *xhdr)
+ struct xheader *xhdr, void *data __attribute__ ((unused)))
{
code_num (st->stat.st_gid, keyword, xhdr);
}
static void
gid_decoder (struct tar_stat_info *st, char const *arg)
{
- st->stat.st_gid = strtoul (arg, NULL, 0);
+ uintmax_t u;
+ if (decode_num (&u, arg, TYPE_MAXIMUM (gid_t), "gid"))
+ st->stat.st_gid = u;
}
static void
gname_coder (struct tar_stat_info const *st, char const *keyword,
- struct xheader *xhdr)
+ struct xheader *xhdr, void *data __attribute__ ((unused)))
{
code_string (st->gname, keyword, xhdr);
}
static void
gname_decoder (struct tar_stat_info *st, char const *arg)
{
- assign_string (&st->gname, arg);
+ decode_string (&st->gname, arg);
}
static void
linkpath_coder (struct tar_stat_info const *st, char const *keyword,
- struct xheader *xhdr)
+ struct xheader *xhdr, void *data __attribute__ ((unused)))
{
code_string (st->link_name, keyword, xhdr);
}
static void
linkpath_decoder (struct tar_stat_info *st, char const *arg)
{
- assign_string (&st->link_name, arg);
+ decode_string (&st->link_name, arg);
}
static void
ctime_coder (struct tar_stat_info const *st, char const *keyword,
- struct xheader *xhdr)
+ struct xheader *xhdr, void *data __attribute__ ((unused)))
{
- code_time (st->stat.st_ctime, keyword, xhdr);
+ code_time (get_stat_ctime (&st->stat), keyword, xhdr);
}
static void
ctime_decoder (struct tar_stat_info *st, char const *arg)
{
- st->stat.st_ctime = strtoul (arg, NULL, 0);
+ struct timespec ts;
+ if (decode_time (&ts, arg, "ctime"))
+ set_stat_ctime (&st->stat, ts);
}
static void
mtime_coder (struct tar_stat_info const *st, char const *keyword,
- struct xheader *xhdr)
+ struct xheader *xhdr, void *data __attribute__ ((unused)))
{
- code_time (st->stat.st_mtime, keyword, xhdr);
+ code_time (get_stat_mtime (&st->stat), keyword, xhdr);
}
static void
mtime_decoder (struct tar_stat_info *st, char const *arg)
{
- st->stat.st_mtime = strtoul (arg, NULL, 0);
+ struct timespec ts;
+ if (decode_time (&ts, arg, "mtime"))
+ set_stat_mtime (&st->stat, ts);
}
static void
path_coder (struct tar_stat_info const *st, char const *keyword,
- struct xheader *xhdr)
+ struct xheader *xhdr, void *data __attribute__ ((unused)))
{
code_string (st->file_name, keyword, xhdr);
}
static void
path_decoder (struct tar_stat_info *st, char const *arg)
{
- assign_string (&st->orig_file_name, arg);
- assign_string (&st->file_name, arg);
+ decode_string (&st->orig_file_name, arg);
+ decode_string (&st->file_name, arg);
st->had_trailing_slash = strip_trailing_slashes (st->file_name);
}
static void
size_coder (struct tar_stat_info const *st, char const *keyword,
- struct xheader *xhdr)
+ struct xheader *xhdr, void *data __attribute__ ((unused)))
{
code_num (st->stat.st_size, keyword, xhdr);
}
static void
size_decoder (struct tar_stat_info *st, char const *arg)
{
- st->stat.st_size = strtoul (arg, NULL, 0);
+ uintmax_t u;
+ if (decode_num (&u, arg, TYPE_MAXIMUM (off_t), "size"))
+ st->archive_file_size = st->stat.st_size = u;
}
static void
uid_coder (struct tar_stat_info const *st, char const *keyword,
- struct xheader *xhdr)
+ struct xheader *xhdr, void *data __attribute__ ((unused)))
{
code_num (st->stat.st_uid, keyword, xhdr);
}
static void
uid_decoder (struct tar_stat_info *st, char const *arg)
{
- st->stat.st_uid = strtoul (arg, NULL, 0);
+ uintmax_t u;
+ if (decode_num (&u, arg, TYPE_MAXIMUM (uid_t), "uid"))
+ st->stat.st_uid = u;
}
static void
uname_coder (struct tar_stat_info const *st, char const *keyword,
- struct xheader *xhdr)
+ struct xheader *xhdr, void *data __attribute__ ((unused)))
{
code_string (st->uname, keyword, xhdr);
}
static void
uname_decoder (struct tar_stat_info *st, char const *arg)
{
- assign_string (&st->uname, arg);
+ decode_string (&st->uname, arg);
}
-static struct xhdr_tab const xhdr_tab[] = {
- { "atime", atime_coder, atime_decoder },
- { "comment", dummy_coder, dummy_decoder },
- { "charset", dummy_coder, dummy_decoder },
- { "ctime", ctime_coder, ctime_decoder },
- { "gid", gid_coder, gid_decoder },
- { "gname", gname_coder, gname_decoder },
- { "linkpath", linkpath_coder, linkpath_decoder},
- { "mtime", mtime_coder, mtime_decoder },
- { "path", path_coder, path_decoder },
- { "size", size_coder, size_decoder },
- { "uid", uid_coder, uid_decoder },
- { "uname", uname_coder, uname_decoder },
+static void
+sparse_size_coder (struct tar_stat_info const *st, char const *keyword,
+ struct xheader *xhdr, void *data)
+{
+ size_coder (st, keyword, xhdr, data);
+}
+
+static void
+sparse_size_decoder (struct tar_stat_info *st, char const *arg)
+{
+ uintmax_t u;
+ if (decode_num (&u, arg, TYPE_MAXIMUM (off_t), "GNU.sparse.size"))
+ 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)))
+{
+ code_num (st->sparse_map_avail, keyword, xhdr);
+}
+
+static void
+sparse_numblocks_decoder (struct tar_stat_info *st, char const *arg)
+{
+ uintmax_t u;
+ if (decode_num (&u, arg, SIZE_MAX, "GNU.sparse.numblocks"))
+ {
+ st->sparse_map_size = u;
+ 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)
+{
+ size_t i = *(size_t*)data;
+ code_num (st->sparse_map[i].offset, keyword, xhdr);
+}
+
+static void
+sparse_offset_decoder (struct tar_stat_info *st, char const *arg)
+{
+ uintmax_t u;
+ if (decode_num (&u, arg, TYPE_MAXIMUM (off_t), "GNU.sparse.offset"))
+ st->sparse_map[st->sparse_map_avail].offset = u;
+}
+
+static void
+sparse_numbytes_coder (struct tar_stat_info const *st, char const *keyword,
+ struct xheader *xhdr, void *data)
+{
+ size_t i = *(size_t*)data;
+ code_num (st->sparse_map[i].numbytes, keyword, xhdr);
+}
+
+static void
+sparse_numbytes_decoder (struct tar_stat_info *st, char const *arg)
+{
+ uintmax_t u;
+ if (decode_num (&u, arg, SIZE_MAX, "GNU.sparse.numbytes"))
+ {
+ if (st->sparse_map_avail == st->sparse_map_size)
+ st->sparse_map = x2nrealloc (st->sparse_map,
+ &st->sparse_map_size,
+ sizeof st->sparse_map[0]);
+ st->sparse_map[st->sparse_map_avail++].numbytes = 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 },
-#if 0 /* GNU private keywords (not yet implemented) */
/* Sparse file handling */
- { "GNU.sparse.offset", sparse_offset_coder, sparse_offset_decoder },
- { "GNU.sparse.numbytes", sparse_numbytes_coder, sparse_numbytes_decoder },
+ { "GNU.sparse.size", sparse_size_coder, sparse_size_decoder, true },
+ { "GNU.sparse.numblocks", sparse_numblocks_coder, sparse_numblocks_decoder,
+ true },
+ { "GNU.sparse.offset", sparse_offset_coder, sparse_offset_decoder,
+ true },
+ { "GNU.sparse.numbytes", sparse_numbytes_coder, sparse_numbytes_decoder,
+ true },
+
+#if 0 /* GNU private keywords (not yet implemented) */
/* 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.dumpdir", dumpdir_coder, dumpdir_decoder },
+ { "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.
Equivalent to GNUTYPE_VOLHDR. */
- { "GNU.volume.header", volume_header_coder, volume_header_decoder },
+ { "GNU.volume.header", volume_header_coder, volume_header_decoder, false },
/* 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 },
- { "GNU.volume.offset", volume_offset_coder, volume_offset_decoder },
+ { "GNU.volume.size", volume_size_coder, volume_size_decoder, false },
+ { "GNU.volume.offset", volume_offset_coder, volume_offset_decoder, false },
#endif
- { NULL, NULL, NULL }
+ { NULL, NULL, NULL, false }
};
projects / chaz / tar / blobdiff