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-rw-r--r--mdk-stage1/insmod-modutils/util/meta_expand.c339
1 files changed, 0 insertions, 339 deletions
diff --git a/mdk-stage1/insmod-modutils/util/meta_expand.c b/mdk-stage1/insmod-modutils/util/meta_expand.c
deleted file mode 100644
index 41fb4024c..000000000
--- a/mdk-stage1/insmod-modutils/util/meta_expand.c
+++ /dev/null
@@ -1,339 +0,0 @@
-/*
- * Handle expansion of meta charaters
- *
- * Copyright 1999 Björn Ekwall <bj0rn@blox.se>
- *
- * "kernelversion" idea from the Debian release via:
- * Wichert Akkerman <wakkerma@cs.leidenuniv.nl>
- *
- * Use wordexp(): idea from Tim Waugh <tim@cyberelk.demon.co.uk>
- *
- * Alpha typecast: Michal Jaegermann <michal@ellpspace.math.ualberta.ca>
- *
- * This file is part of the Linux modutils.
- *
- * 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 of the License, 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 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
-
-#ifdef HAVE_WORDEXP
-#undef HAVE_WORDEXP
-#define HAVE_WORDEXP 0
-#endif
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <limits.h>
-#include <string.h>
-#include <ctype.h>
-#if HAVE_WORDEXP
-#include <wordexp.h>
-#elif HAVE_GLOB
-#include <glob.h>
-#endif
-#include "util.h"
-
-/*
- * Split into words delimited by whitespace,
- * handle remaining quotes though...
- * If strip_quotes != 0 then strip one level of quotes from the line.
- */
-static void split_line(GLOB_LIST *g, char *line, int strip_quotes)
-{
- int len;
- char *d;
- char *e;
- char *p;
- char tmpline[PATH_MAX];
-
- for (p = line; *p; p = e) {
- /* Skip leading whitespace */
- while (*p && isspace(*p))
- ++p;
-
- /* find end of word */
- d = tmpline;
- for (e = p; *e && !(isspace(*e)); ++e) {
- char match;
-
- /* Quote handling */
- switch (*e) {
- case '\\':
- if (!strip_quotes)
- *d++ = *e;
- break;
-
- case '"':
- case '\'':
- match = *e;
- if (!strip_quotes)
- *d++ = *e;
- for (++e; *e && *e != match; ++e) {
- *d++ = *e;
- if (*e == '\\' && *(e + 1) == match)
- *d++ = *++e;
- }
- if (!strip_quotes)
- *d++ = *e;
- break;
-
- default:
- *d++ = *e;
- break;
- }
- }
-
- if ((len = (int)(d - tmpline)) > 0) {
- char *str = xmalloc(len + 1);
- strncpy(str, tmpline, len);
- str[len] = '\0';
- g->pathv = (char **)xrealloc(g->pathv,
- (g->pathc + 2) * sizeof(char *));
- g->pathv[g->pathc++] = str;
- }
- }
-
- if (g->pathc)
- g->pathv[g->pathc] = NULL;
-}
-
-static int glob_it(char *pt, GLOB_LIST *g)
-{
-#if HAVE_WORDEXP
- wordexp_t w;
-
- memset(&w, 0, sizeof(w));
- if (wordexp(pt, &w, WRDE_UNDEF)) {
- /*
- error("wordexp %s failed", pt);
- */
- return -1;
- }
- /* else */
- g->pathc = w.we_wordc;
- g->pathv = w.we_wordv;
-
- return 0;
-#elif HAVE_GLOB /* but not wordexp */
- glob_t w;
-
- memset(&w, 0, sizeof(w));
- if (glob(pt, GLOB_NOSORT, NULL, &w)) {
- /*
- error("glob %s failed", pt);
- */
- return -1;
- }
- /* else */
- if (w.gl_pathc && strpbrk(w.gl_pathv[0], SHELL_META)) {
- globfree(&w);
- return -1;
- }
- g->pathc = w.gl_pathc;
- g->pathv = w.gl_pathv;
-
- return 0;
-#else /* Neither wordexp nor glob */
- return -1;
-#endif
-}
-
-/*
- * Expand the string (including meta-character) to a list of matches
- *
- * Return 0 if OK else -1
- */
-int meta_expand(char *pt, GLOB_LIST *g, char *base_dir, char *version, int type)
-{
- FILE *fin;
- int len = 0;
- char *line = NULL;
- char *p, *p1;
- char tmpline[PATH_MAX + 1];
- char wrk[sizeof(tmpline)];
- char tmpcmd[2*sizeof(tmpline)+20]; /* room for /bin/echo "text" */
-
- g->pathc = 0;
- g->pathv = NULL;
-
- /*
- * Take care of version dependent expansions
- * Needed for forced version handling
- */
- if ((p = strchr(pt, '`')) != NULL && (type & ME_BUILTIN_COMMAND)) {
- do {
- char *s;
-
- for (s = p + 1; isspace(*s); ++s)
- ;
-
- if (strncmp(s, "uname -r", 8) == 0) {
- while (*s && (*s != '`'))
- ++s;
- if (*s == '`') {
- *p = '\0';
- snprintf(wrk, sizeof(wrk), "%s%s%s",
- pt,
- version,
- s + 1);
- *p = '`';
- }
- strcpy(tmpline, wrk); /* safe, same size */
- pt = tmpline;
- } else if (strncmp(s, "kernelversion", 13) == 0) {
- while (*s && (*s != '`'))
- ++s;
- if (*s == '`') {
- int n;
- char *k;
-
- *p = '\0';
- for (n = 0, k = version; *k; ++k) {
- if (*k == '.' && ++n == 2)
- break;
- }
- snprintf(wrk, sizeof(wrk), "%s%.*s%s",
- pt,
- /* typecast for Alpha */
- (int)(k - version),
- version,
- s + 1);
- *p = '`';
- strcpy(tmpline, wrk); /* safe, same size */
- pt = tmpline;
- }
- } else
- break;
- } while ((p = strchr(pt, '`')) != NULL);
- }
-
- /*
- * Any remaining meta-chars?
- */
- if (strpbrk(pt, SHELL_META) == NULL) {
- /*
- * No meta-chars.
- * Split into words, delimited by whitespace.
- */
- snprintf(wrk, sizeof(wrk), "%s%s", (base_dir ? base_dir : ""), pt);
- strcpy(tmpline, wrk); /* safe, same size */
- if ((p = strtok(tmpline, " \t\n")) != NULL) {
- while (p) {
- g->pathv = (char **)xrealloc(g->pathv,
- (g->pathc + 2) * sizeof(char *));
- g->pathv[g->pathc++] = xstrdup(p);
- p = strtok(NULL, " \t\n");
- }
- }
- if (g->pathc)
- g->pathv[g->pathc] = NULL;
- return 0;
- }
- /* else */
- /*
- * Handle remaining meta-chars
- */
-
- /*
- * Just plain quotes?
- */
- if (strpbrk(pt, "&();|<>$`!{}[]~=+:?*") == NULL &&
- (p = strpbrk(pt, "\"'\\"))) {
- split_line(g, pt, 1);
- return 0;
- }
-
- if (strpbrk(pt, "&();|<>$`\"'\\!{}~+:[]~?*") == NULL) {
- /* Only "=" remaining, should be module options */
- split_line(g, pt, 0);
- return 0;
- }
-
- /*
- * If there are meta-characters and
- * if they are only shell glob meta-characters: do globbing
- */
-#if HAVE_WORDEXP
- if (strpbrk(pt, "&();|<>`\"'\\!{}~=+:") == NULL &&
- strpbrk(pt, "$[]~?*"))
-#else
- if (strpbrk(pt, "&();|<>$`\"'\\!{}~=+:") == NULL &&
- strpbrk(pt, "[]~?*"))
-#endif
- if ((type & ME_GLOB) && glob_it(pt, g) == 0)
- return 0;
-
- if (strpbrk(pt, "&();|<>$`\"'\\!{}~+:[]~?*") == NULL) {
- /* Only "=" remaining, should be module options */
- split_line(g, pt, 0);
- return 0;
- }
-
- /*
- * Last resort: Use "echo".
- * DANGER: Applying shell expansion to user supplied input is a
- * major security risk. Modutils code should only do meta
- * expansion via shell commands for trusted data. Basically
- * this means only for data in the config file. Even that
- * assumes that the user cannot run modprobe as root with
- * their own config file. Programs (including the kernel)
- * that invoke modprobe as root with user supplied input must
- * pass exactly one user supplied parameter and must set
- * safe mode.
- */
- if (!(type & ME_SHELL_COMMAND))
- return 0;
- snprintf(wrk, sizeof(wrk), "%s%s", (base_dir ? base_dir : ""), pt);
- strcpy(tmpline, wrk); /* safe, same size */
- snprintf(tmpcmd, sizeof(tmpcmd), "/bin/echo \"");
- for (p = tmpline, p1 = tmpcmd + strlen(tmpcmd); *p; ++p, ++p1) {
- if (*p == '"' || *p == '\\')
- *p1++ = '\\';
- *p1 = *p;
- }
- *p1++ = '"';
- *p1++ = '\0';
- if (p1 - tmpcmd > sizeof(tmpcmd)) {
- error("tmpcmd overflow, should never happen");
- exit(1);
- }
- if ((fin = popen(tmpcmd, "r")) == NULL) {
- error("Can't execute: %s", tmpcmd);
- return -1;
- }
- /* else */
-
- /*
- * Collect the result
- */
- while (fgets(tmpcmd, PATH_MAX, fin) != NULL) {
- int l = strlen(tmpcmd);
-
- line = (char *)xrealloc(line, len + l + 1);
- line[len] = '\0';
- strcat(line + len, tmpcmd); /* safe, realloc */
- len += l;
- }
- pclose(fin);
-
- if (line) {
- /* shell used to strip one set of quotes. Paranoia code in
- * 2.3.20 stops that strip so we do it ourselves.
- */
- split_line(g, line, 1);
- free(line);
- }
-
- return 0;
-}
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