-/* Look up user and/or group names.
- Copyright (C) 1988, 1992 Free Software Foundation
-
-This file is part of GNU Tar.
-
-GNU Tar 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 version.
-
-GNU Tar is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with GNU Tar; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
-/*
- * Look up user and/or group names.
- *
- * This file should be modified for non-unix systems to do something
- * reasonable.
- */
-
-#include <sys/types.h>
-#include "tar.h"
-#include "port.h"
-
-#ifndef NONAMES
-/* Whole module goes away if NONAMES defined. Otherwise... */
-#include <stdio.h>
+/* Various processing of names.
+ Copyright (C) 1988, 1992, 1994, 1996, 1997 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
+ version.
+
+ This program is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+ Public License for more details.
+
+ 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 Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+#include "system.h"
+
#include <pwd.h>
#include <grp.h>
-static int saveuid = -993;
-static char saveuname[TUNMLEN];
-static int my_uid = -993;
-
-static int savegid = -993;
-static char savegname[TGNMLEN];
-static int my_gid = -993;
-
-#define myuid ( my_uid < 0? (my_uid = getuid()): my_uid )
-#define mygid ( my_gid < 0? (my_gid = getgid()): my_gid )
-
-/*
- * Look up a user or group name from a uid/gid, maintaining a cache.
- * FIXME, for now it's a one-entry cache.
- * FIXME2, the "-993" is to reduce the chance of a hit on the first lookup.
- *
- * This is ifdef'd because on Suns, it drags in about 38K of "yellow
- * pages" code, roughly doubling the program size. Thanks guys.
- */
+#ifndef FNM_LEADING_DIR
+# include <fnmatch.h>
+#endif
+
+#include "common.h"
+\f
+/* User and group names. */
+
+extern struct group *getgrnam ();
+extern struct passwd *getpwnam ();
+#if !HAVE_GETPWUID
+extern struct passwd *getpwuid ();
+#endif
+#if !HAVE_GETGRGID
+extern struct group *getgrgid ();
+#endif
+
+/* Make sure you link with the proper libraries if you are running the
+ Yellow Peril (thanks for the good laugh, Ian J.!), or, euh... NIS.
+ This code should also be modified for non-UNIX systems to do something
+ reasonable. */
+
+static char cached_uname[UNAME_FIELD_SIZE] = "";
+static char cached_gname[GNAME_FIELD_SIZE] = "";
+
+static uid_t cached_uid; /* valid only if cached_uname is not empty */
+static gid_t cached_gid; /* valid only if cached_gname is not empty */
+
+/*------------------------------------------.
+| Given UID, find the corresponding UNAME. |
+`------------------------------------------*/
+
void
-finduname(uname, uid)
- char uname[TUNMLEN];
- int uid;
+uid_to_uname (uid_t uid, char uname[UNAME_FIELD_SIZE])
{
- struct passwd *pw;
- extern struct passwd *getpwuid ();
+ struct passwd *passwd;
- if (uid != saveuid) {
- saveuid = uid;
- saveuname[0] = '\0';
- pw = getpwuid(uid);
- if (pw)
- strncpy(saveuname, pw->pw_name, TUNMLEN);
+ if (!cached_uname[0] || uid != cached_uid)
+ {
+ passwd = getpwuid (uid);
+ if (passwd)
+ {
+ cached_uid = uid;
+ strncpy (cached_uname, passwd->pw_name, UNAME_FIELD_SIZE);
}
- strncpy(uname, saveuname, TUNMLEN);
+ else
+ *uname = '\0';
+ }
+ strncpy (uname, cached_uname, UNAME_FIELD_SIZE);
}
+/*------------------------------------------.
+| Given GID, find the corresponding GNAME. |
+`------------------------------------------*/
+
+void
+gid_to_gname (gid_t gid, char gname[GNAME_FIELD_SIZE])
+{
+ struct group *group;
+
+ if (!cached_gname[0] || gid != cached_gid)
+ {
+ setgrent (); /* FIXME: why?! */
+ group = getgrgid (gid);
+ if (group)
+ {
+ cached_gid = gid;
+ strncpy (cached_gname, group->gr_name, GNAME_FIELD_SIZE);
+ }
+ else
+ *gname = '\0';
+ }
+ strncpy (gname, cached_gname, GNAME_FIELD_SIZE);
+}
+
+/*-------------------------------------------------------------------------.
+| Given UNAME, set the corresponding UID and return 1, or else, return 0. |
+`-------------------------------------------------------------------------*/
+
int
-finduid(uname)
- char uname[TUNMLEN];
-{
- struct passwd *pw;
- extern struct passwd *getpwnam();
-
- if (uname[0] != saveuname[0] /* Quick test w/o proc call */
- || 0!=strncmp(uname, saveuname, TUNMLEN)) {
- strncpy(saveuname, uname, TUNMLEN);
- pw = getpwnam(uname);
- if (pw) {
- saveuid = pw->pw_uid;
- } else {
- saveuid = myuid;
- }
+uname_to_uid (char uname[UNAME_FIELD_SIZE], uid_t *uidp)
+{
+ struct passwd *passwd;
+
+ if (!cached_uname[0]
+ || uname[0] != cached_uname[0]
+ || strncmp (uname, cached_uname, UNAME_FIELD_SIZE) != 0)
+ {
+ passwd = getpwnam (uname);
+ if (passwd)
+ {
+ cached_uid = passwd->pw_uid;
+ strncpy (cached_uname, uname, UNAME_FIELD_SIZE);
+ }
+ else
+ return 0;
+ }
+ *uidp = cached_uid;
+ return 1;
+}
+
+/*-------------------------------------------------------------------------.
+| Given GNAME, set the corresponding GID and return 1, or else, return 0. |
+`-------------------------------------------------------------------------*/
+
+int
+gname_to_gid (char gname[GNAME_FIELD_SIZE], gid_t *gidp)
+{
+ struct group *group;
+
+ if (!cached_gname[0]
+ || gname[0] != cached_gname[0]
+ || strncmp (gname, cached_gname, GNAME_FIELD_SIZE) != 0)
+ {
+ group = getgrnam (gname);
+ if (group)
+ {
+ cached_gid = group->gr_gid;
+ strncpy (cached_gname, gname, GNAME_FIELD_SIZE);
+ }
+ else
+ return 0;
+ }
+ *gidp = cached_gid;
+ return 1;
+}
+\f
+/* Names from the command call. */
+
+static const char **name_array; /* store an array of names */
+static int allocated_names; /* how big is the array? */
+static int names; /* how many entries does it have? */
+static int name_index = 0; /* how many of the entries have we scanned? */
+
+/*------------------------.
+| Initialize structures. |
+`------------------------*/
+
+void
+init_names (void)
+{
+ allocated_names = 10;
+ name_array = (const char **)
+ xmalloc (sizeof (const char *) * allocated_names);
+ names = 0;
+}
+
+/*--------------------------------------------------------------.
+| Add NAME at end of name_array, reallocating it as necessary. |
+`--------------------------------------------------------------*/
+
+void
+name_add (const char *name)
+{
+ if (names == allocated_names)
+ {
+ allocated_names *= 2;
+ name_array = (const char **)
+ xrealloc (name_array, sizeof (const char *) * allocated_names);
+ }
+ name_array[names++] = name;
+}
+\f
+/* Names from external name file. */
+
+static FILE *name_file; /* file to read names from */
+static char *name_buffer; /* buffer to hold the current file name */
+static size_t name_buffer_length; /* allocated length of name_buffer */
+
+/*---.
+| ? |
+`---*/
+
+/* FIXME: I should better check more closely. It seems at first glance that
+ is_pattern is only used when reading a file, and ignored for all
+ command line arguments. */
+
+static inline int
+is_pattern (const char *string)
+{
+ return strchr (string, '*') || strchr (string, '[') || strchr (string, '?');
+}
+
+/*-----------------------------------------------------------------------.
+| Set up to gather file names for tar. They can either come from a file |
+| or were saved from decoding arguments. |
+`-----------------------------------------------------------------------*/
+
+void
+name_init (int argc, char *const *argv)
+{
+ name_buffer = xmalloc (NAME_FIELD_SIZE + 2);
+ name_buffer_length = NAME_FIELD_SIZE;
+
+ if (files_from_option)
+ {
+ if (!strcmp (files_from_option, "-"))
+ {
+ request_stdin ("-T");
+ name_file = stdin;
+ }
+ else if (name_file = fopen (files_from_option, "r"), !name_file)
+ FATAL_ERROR ((0, errno, _("Cannot open file %s"), name_file));
+ }
+}
+
+/*---.
+| ? |
+`---*/
+
+void
+name_term (void)
+{
+ free (name_buffer);
+ free (name_array);
+}
+
+/*---------------------------------------------------------------------.
+| Read the next filename from name_file and null-terminate it. Put it |
+| into name_buffer, reallocating and adjusting name_buffer_length if |
+| necessary. Return 0 at end of file, 1 otherwise. |
+`---------------------------------------------------------------------*/
+
+static int
+read_name_from_file (void)
+{
+ int character;
+ int counter = 0;
+
+ /* FIXME: getc may be called even if character was EOF the last time here. */
+
+ /* FIXME: This + 2 allocation might serve no purpose. */
+
+ while (character = getc (name_file),
+ character != EOF && character != filename_terminator)
+ {
+ if (counter == name_buffer_length)
+ {
+ name_buffer_length += NAME_FIELD_SIZE;
+ name_buffer = xrealloc (name_buffer, name_buffer_length + 2);
+ }
+ name_buffer[counter++] = character;
+ }
+
+ if (counter == 0 && character == EOF)
+ return 0;
+
+ if (counter == name_buffer_length)
+ {
+ name_buffer_length += NAME_FIELD_SIZE;
+ name_buffer = xrealloc (name_buffer, name_buffer_length + 2);
+ }
+ name_buffer[counter] = '\0';
+
+ return 1;
+}
+
+/*------------------------------------------------------------------------.
+| Get the next name from ARGV or the file of names. Result is in static |
+| storage and can't be relied upon across two calls. |
+| |
+| If CHANGE_DIRS is true, treat a filename of the form "-C" as meaning |
+| that the next filename is the name of a directory to change to. If |
+| `filename_terminator' is NUL, CHANGE_DIRS is effectively always false. |
+`------------------------------------------------------------------------*/
+
+char *
+name_next (int change_dirs)
+{
+ const char *source;
+ char *cursor;
+ int chdir_flag = 0;
+
+ if (filename_terminator == '\0')
+ change_dirs = 0;
+
+ while (1)
+ {
+ /* Get a name, either from file or from saved arguments. */
+
+ if (name_file)
+ {
+ if (!read_name_from_file ())
+ break;
}
- return saveuid;
+ else
+ {
+ if (name_index == names)
+ break;
+
+ source = name_array[name_index++];
+ if (strlen (source) > name_buffer_length)
+ {
+ free (name_buffer);
+ name_buffer_length = strlen (source);
+ name_buffer = xmalloc (name_buffer_length + 2);
+ }
+ strcpy (name_buffer, source);
+ }
+
+ /* Zap trailing slashes. */
+
+ cursor = name_buffer + strlen (name_buffer) - 1;
+ while (cursor > name_buffer && *cursor == '/')
+ *cursor-- = '\0';
+
+ if (chdir_flag)
+ {
+ if (chdir (name_buffer) < 0)
+ FATAL_ERROR ((0, errno, _("Cannot change to directory %s"),
+ name_buffer));
+ chdir_flag = 0;
+ }
+ else if (change_dirs && strcmp (name_buffer, "-C") == 0)
+ chdir_flag = 1;
+ else
+#if 0
+ if (!exclude_option || !check_exclude (name_buffer))
+#endif
+ {
+ unquote_string (name_buffer);
+ return name_buffer;
+ }
+ }
+
+ /* No more names in file. */
+
+ if (name_file && chdir_flag)
+ FATAL_ERROR ((0, 0, _("Missing file name after -C")));
+
+ return NULL;
+}
+
+/*------------------------------.
+| Close the name file, if any. |
+`------------------------------*/
+
+void
+name_close (void)
+{
+ if (name_file != NULL && name_file != stdin)
+ if (fclose (name_file) == EOF)
+ ERROR ((0, errno, "%s", name_buffer));
+}
+
+/*-------------------------------------------------------------------------.
+| Gather names in a list for scanning. Could hash them later if we really |
+| care. |
+| |
+| If the names are already sorted to match the archive, we just read them |
+| one by one. name_gather reads the first one, and it is called by |
+| name_match as appropriate to read the next ones. At EOF, the last name |
+| read is just left in the buffer. This option lets users of small |
+| machines extract an arbitrary number of files by doing "tar t" and |
+| editing down the list of files. |
+`-------------------------------------------------------------------------*/
+
+void
+name_gather (void)
+{
+ /* Buffer able to hold a single name. */
+ static struct name *buffer;
+ static int allocated_length = 0;
+
+ char *name;
+
+ if (same_order_option)
+ {
+ if (allocated_length == 0)
+ {
+ allocated_length = sizeof (struct name) + NAME_FIELD_SIZE;
+ buffer = (struct name *) xmalloc (allocated_length);
+ /* FIXME: This memset is overkill, and ugly... */
+ memset (buffer, 0, allocated_length);
+ }
+ name = name_next (0);
+ if (name)
+ {
+ if (strcmp (name, "-C") == 0)
+ {
+ char *copy = xstrdup (name_next (0));
+
+ name = name_next (0);
+ if (!name)
+ FATAL_ERROR ((0, 0, _("Missing file name after -C")));
+ buffer->change_dir = copy;
+ }
+ buffer->length = strlen (name);
+ if (sizeof (struct name) + buffer->length >= allocated_length)
+ {
+ allocated_length = sizeof (struct name) + buffer->length;
+ buffer = (struct name *) xrealloc (buffer, allocated_length);
+ }
+ strncpy (buffer->name, name, (size_t) buffer->length);
+ buffer->name[buffer->length] = 0;
+ buffer->next = NULL;
+ buffer->found = 0;
+
+ /* FIXME: Poorly named globals, indeed... */
+ namelist = buffer;
+ namelast = namelist;
+ }
+ return;
+ }
+
+ /* Non sorted names -- read them all in. */
+
+ while (name = name_next (0), name)
+ addname (name);
}
+/*-----------------------------.
+| Add a name to the namelist. |
+`-----------------------------*/
void
-findgname(gname, gid)
- char gname[TGNMLEN];
- int gid;
+addname (const char *string)
{
- struct group *gr;
- extern struct group *getgrgid ();
+ /* FIXME: This is ugly. How is memory managed? */
+ static char *chdir_name = NULL;
+
+ struct name *name;
+ int length;
+
+ if (strcmp (string, "-C") == 0)
+ {
+ chdir_name = xstrdup (name_next (0));
+ string = name_next (0);
+ if (!chdir_name)
+ FATAL_ERROR ((0, 0, _("Missing file name after -C")));
+
+ if (chdir_name[0] != '/')
+ {
+ char *path = xmalloc (PATH_MAX);
- if (gid != savegid) {
- savegid = gid;
- savegname[0] = '\0';
- (void)setgrent();
- gr = getgrgid(gid);
- if (gr)
- strncpy(savegname, gr->gr_name, TGNMLEN);
+ /* FIXME: Shouldn't we use xgetcwd? */
+#if HAVE_GETCWD
+ if (!getcwd (path, PATH_MAX))
+ FATAL_ERROR ((0, 0, _("Could not get current directory")));
+#else
+ char *getwd ();
+
+ if (!getwd (path))
+ FATAL_ERROR ((0, 0, _("Could not get current directory: %s"),
+ path));
+#endif
+ chdir_name = new_name (path, chdir_name);
+ free (path);
}
- (void) strncpy(gname, savegname, TGNMLEN);
+ }
+
+ length = string ? strlen (string) : 0;
+ name = (struct name *) xmalloc ((size_t) (sizeof (struct name) + length));
+ memset (name, 0, sizeof (struct name) + length);
+ name->next = NULL;
+
+ if (string)
+ {
+ name->fake = 0;
+ name->length = length;
+ /* FIXME: Possibly truncating a string, here? Tss, tss, tss! */
+ strncpy (name->name, string, (size_t) length);
+ name->name[length] = '\0';
+ }
+ else
+ name->fake = 1;
+
+ name->found = 0;
+ name->regexp = 0; /* assume not a regular expression */
+ name->firstch = 1; /* assume first char is literal */
+ name->change_dir = chdir_name;
+ name->dir_contents = 0;
+
+ if (string && is_pattern (string))
+ {
+ name->regexp = 1;
+ if (string[0] == '*' || string[0] == '[' || string[0] == '?')
+ name->firstch = 0;
+ }
+
+ if (namelast)
+ namelast->next = name;
+ namelast = name;
+ if (!namelist)
+ namelist = name;
}
+/*------------------------------------------------------------------------.
+| Return true if and only if name PATH (from an archive) matches any name |
+| from the namelist. |
+`------------------------------------------------------------------------*/
int
-findgid(gname)
- char gname[TUNMLEN];
-{
- struct group *gr;
- extern struct group *getgrnam();
-
- if (gname[0] != savegname[0] /* Quick test w/o proc call */
- || 0!=strncmp(gname, savegname, TUNMLEN)) {
- strncpy(savegname, gname, TUNMLEN);
- gr = getgrnam(gname);
- if (gr) {
- savegid = gr->gr_gid;
- } else {
- savegid = mygid;
+name_match (const char *path)
+{
+ int length = strlen (path);
+
+ while (1)
+ {
+ struct name *cursor = namelist;
+
+ if (!cursor)
+ return 1; /* empty namelist is easy */
+
+ if (cursor->fake)
+ {
+ if (cursor->change_dir && chdir (cursor->change_dir))
+ FATAL_ERROR ((0, errno, _("Cannot change to directory %s"),
+ cursor->change_dir));
+ namelist = 0;
+ return 1;
+ }
+
+ for (; cursor; cursor = cursor->next)
+ {
+ /* If first chars don't match, quick skip. */
+
+ if (cursor->firstch && cursor->name[0] != path[0])
+ continue;
+
+ /* Regular expressions (shell globbing, actually). */
+
+ if (cursor->regexp)
+ {
+ if (fnmatch (cursor->name, path, FNM_LEADING_DIR) == 0)
+ {
+ cursor->found = 1; /* remember it matched */
+ if (starting_file_option)
+ {
+ free (namelist);
+ namelist = NULL;
+ }
+ if (cursor->change_dir && chdir (cursor->change_dir))
+ FATAL_ERROR ((0, errno, _("Cannot change to directory %s"),
+ cursor->change_dir));
+
+ /* We got a match. */
+ return 1;
}
+ continue;
+ }
+
+ /* Plain Old Strings. */
+
+ if (cursor->length <= length
+ /* archive length >= specified */
+ && (path[cursor->length] == '\0'
+ || path[cursor->length] == '/')
+ /* full match on file/dirname */
+ && strncmp (path, cursor->name, (size_t) cursor->length) == 0)
+ /* name compare */
+ {
+ cursor->found = 1; /* remember it matched */
+ if (starting_file_option)
+ {
+ free ((void *) namelist);
+ namelist = 0;
+ }
+ if (cursor->change_dir && chdir (cursor->change_dir))
+ FATAL_ERROR ((0, errno, _("Cannot change to directory %s"),
+ cursor->change_dir));
+
+ /* We got a match. */
+ return 1;
+ }
+ }
+
+ /* Filename from archive not found in namelist. If we have the whole
+ namelist here, just return 0. Otherwise, read the next name in and
+ compare it. If this was the last name, namelist->found will remain
+ on. If not, we loop to compare the newly read name. */
+
+ if (same_order_option && namelist->found)
+ {
+ name_gather (); /* read one more */
+ if (namelist->found)
+ return 0;
}
- return savegid;
+ else
+ return 0;
+ }
}
+
+/*------------------------------------------------------------------.
+| Print the names of things in the namelist that were not matched. |
+`------------------------------------------------------------------*/
+
+void
+names_notfound (void)
+{
+ struct name *cursor;
+ struct name *next;
+
+ for (cursor = namelist; cursor; cursor = next)
+ {
+ next = cursor->next;
+ if (!cursor->found && !cursor->fake)
+ ERROR ((0, 0, _("%s: Not found in archive"), cursor->name));
+
+ /* We could free the list, but the process is about to die anyway, so
+ save some CPU time. Amigas and other similarly broken software
+ will need to waste the time, though. */
+
+#ifdef amiga
+ if (!same_order_option)
+ free (cursor);
#endif
+ }
+ namelist = (struct name *) NULL;
+ namelast = (struct name *) NULL;
+
+ if (same_order_option)
+ {
+ char *name;
+
+ while (name = name_next (1), name)
+ ERROR ((0, 0, _("%s: Not found in archive"), name));
+ }
+}
+
+/*---.
+| ? |
+`---*/
+
+void
+name_expand (void)
+{
+}
+
+/*-------------------------------------------------------------------------.
+| This is like name_match, except that it returns a pointer to the name it |
+| matched, and doesn't set FOUND in structure. The caller will have to do |
+| that if it wants to. Oh, and if the namelist is empty, it returns NULL, |
+| unlike name_match, which returns TRUE. |
+`-------------------------------------------------------------------------*/
+
+struct name *
+name_scan (const char *path)
+{
+ int length = strlen (path);
+
+ while (1)
+ {
+ struct name *cursor = namelist;
+
+ if (!cursor)
+ return NULL; /* empty namelist is easy */
+
+ for (; cursor; cursor = cursor->next)
+ {
+ /* If first chars don't match, quick skip. */
+
+ if (cursor->firstch && cursor->name[0] != path[0])
+ continue;
+
+ /* Regular expressions. */
+
+ if (cursor->regexp)
+ {
+ if (fnmatch (cursor->name, path, FNM_LEADING_DIR) == 0)
+ return cursor; /* we got a match */
+ continue;
+ }
+
+ /* Plain Old Strings. */
+
+ if (cursor->length <= length
+ /* archive length >= specified */
+ && (path[cursor->length] == '\0'
+ || path[cursor->length] == '/')
+ /* full match on file/dirname */
+ && strncmp (path, cursor->name, (size_t) cursor->length) == 0)
+ /* name compare */
+ return cursor; /* we got a match */
+ }
+
+ /* Filename from archive not found in namelist. If we have the whole
+ namelist here, just return 0. Otherwise, read the next name in and
+ compare it. If this was the last name, namelist->found will remain
+ on. If not, we loop to compare the newly read name. */
+
+ if (same_order_option && namelist->found)
+ {
+ name_gather (); /* read one more */
+ if (namelist->found)
+ return NULL;
+ }
+ else
+ return NULL;
+ }
+}
+
+/*-----------------------------------------------------------------------.
+| This returns a name from the namelist which doesn't have ->found set. |
+| It sets ->found before returning, so successive calls will find and |
+| return all the non-found names in the namelist |
+`-----------------------------------------------------------------------*/
+
+struct name *gnu_list_name = NULL;
+
+char *
+name_from_list (void)
+{
+ if (!gnu_list_name)
+ gnu_list_name = namelist;
+ while (gnu_list_name && gnu_list_name->found)
+ gnu_list_name = gnu_list_name->next;
+ if (gnu_list_name)
+ {
+ gnu_list_name->found = 1;
+ if (gnu_list_name->change_dir)
+ if (chdir (gnu_list_name->change_dir) < 0)
+ FATAL_ERROR ((0, errno, _("Cannot change to directory %s"),
+ gnu_list_name->change_dir));
+ return gnu_list_name->name;
+ }
+ return NULL;
+}
+
+/*---.
+| ? |
+`---*/
+
+void
+blank_name_list (void)
+{
+ struct name *name;
+
+ gnu_list_name = 0;
+ for (name = namelist; name; name = name->next)
+ name->found = 0;
+}
+
+/*---.
+| ? |
+`---*/
+
+char *
+new_name (const char *path, const char *name)
+{
+ char *buffer = (char *) xmalloc (strlen (path) + strlen (name) + 2);
+
+ sprintf (buffer, "%s/%s", path, name);
+ return buffer;
+}
+\f
+/* Excludes names. */
+
+static char *exclude_pool = NULL;
+static int exclude_pool_size = 0;
+static int allocated_exclude_pool_size = 0;
+
+static char **simple_exclude_array = NULL;
+static int simple_excludes = 0;
+static int allocated_simple_excludes = 0;
+
+static char **pattern_exclude_array = NULL;
+static int pattern_excludes = 0;
+static int allocated_pattern_excludes = 0;
+
+/*---.
+| ? |
+`---*/
+
+void
+add_exclude (char *name)
+{
+ int name_size;
+
+ unquote_string (name); /* FIXME: unquote in all cases? If ever? */
+ name_size = strlen (name) + 1;
+
+ if (exclude_pool_size + name_size > allocated_exclude_pool_size)
+ {
+ char *previous_exclude_pool = exclude_pool;
+ char **cursor;
+
+ allocated_exclude_pool_size = exclude_pool_size + name_size + 1024;
+ exclude_pool = (char *)
+ xrealloc (exclude_pool, (size_t) allocated_exclude_pool_size);
+
+ for (cursor = simple_exclude_array;
+ cursor < simple_exclude_array + simple_excludes;
+ cursor++)
+ *cursor = exclude_pool + (*cursor - previous_exclude_pool);
+ for (cursor = pattern_exclude_array;
+ cursor < pattern_exclude_array + pattern_excludes;
+ cursor++)
+ *cursor = exclude_pool + (*cursor - previous_exclude_pool);
+ }
+
+ if (is_pattern (name))
+ {
+ if (pattern_excludes == allocated_pattern_excludes)
+ {
+ allocated_pattern_excludes += 32;
+ pattern_exclude_array = (char **)
+ xrealloc (pattern_exclude_array,
+ allocated_pattern_excludes * sizeof (char *));
+ }
+ pattern_exclude_array[pattern_excludes++]
+ = exclude_pool + exclude_pool_size;
+ }
+ else
+ {
+ if (simple_excludes == allocated_simple_excludes)
+ {
+ allocated_simple_excludes += 32;
+ simple_exclude_array = (char **)
+ xrealloc (simple_exclude_array,
+ allocated_simple_excludes * sizeof (char *));
+ }
+ simple_exclude_array[simple_excludes++]
+ = exclude_pool + exclude_pool_size;
+ }
+
+ strcpy (exclude_pool + exclude_pool_size, name);
+ exclude_pool_size += name_size;
+}
+
+/*---.
+| ? |
+`---*/
+
+void
+add_exclude_file (const char *name)
+{
+ FILE *file;
+ char buffer[1024];
+
+ if (strcmp (name, "-"))
+ file = fopen (name, "r");
+ else
+ {
+ request_stdin ("-X");
+ file = stdin;
+ }
+ if (!file)
+ FATAL_ERROR ((0, errno, _("Cannot open %s"), name));
+
+ while (fgets (buffer, 1024, file))
+ {
+ char *end_of_line = strrchr (buffer, '\n');
+
+ if (end_of_line)
+ *end_of_line = '\0';
+ add_exclude (buffer);
+ }
+ if (fclose (file) == EOF)
+ ERROR ((0, errno, "%s", name));
+}
+
+/*------------------------------------------------------------------.
+| Returns true if the file NAME should not be added nor extracted. |
+`------------------------------------------------------------------*/
+
+int
+check_exclude (const char *name)
+{
+ int counter;
+
+ for (counter = 0; counter < pattern_excludes; counter++)
+ if (fnmatch (pattern_exclude_array[counter], name, FNM_LEADING_DIR) == 0)
+ return 1;
+
+ for (counter = 0; counter < simple_excludes; counter++)
+ {
+ /* Accept the output from strstr only if it is the last part of the
+ string. FIXME: Find a faster way to do this. */
+
+ char *string = strstr (name, simple_exclude_array[counter]);
+
+ if (string
+ && (string == name || string[-1] == '/')
+ && string[strlen (simple_exclude_array[counter])] == '\0')
+ return 1;
+ }
+ return 0;
+}
projects / chaz / tar / commitdiff
