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-rw-r--r--crypto/heimdal/lib/krb5/kuserok.c262
1 files changed, 0 insertions, 262 deletions
diff --git a/crypto/heimdal/lib/krb5/kuserok.c b/crypto/heimdal/lib/krb5/kuserok.c
deleted file mode 100644
index 8f0ff99..0000000
--- a/crypto/heimdal/lib/krb5/kuserok.c
+++ /dev/null
@@ -1,262 +0,0 @@
-/*
- * Copyright (c) 1997 - 2005 Kungliga Tekniska Högskolan
- * (Royal Institute of Technology, Stockholm, Sweden).
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- *
- * 3. Neither the name of the Institute nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#include "krb5_locl.h"
-#include <dirent.h>
-
-RCSID("$Id: kuserok.c 16048 2005-09-09 10:33:33Z lha $");
-
-/* see if principal is mentioned in the filename access file, return
- TRUE (in result) if so, FALSE otherwise */
-
-static krb5_error_code
-check_one_file(krb5_context context,
- const char *filename,
- struct passwd *pwd,
- krb5_principal principal,
- krb5_boolean *result)
-{
- FILE *f;
- char buf[BUFSIZ];
- krb5_error_code ret;
- struct stat st;
-
- *result = FALSE;
-
- f = fopen (filename, "r");
- if (f == NULL)
- return errno;
-
- /* check type and mode of file */
- if (fstat(fileno(f), &st) != 0) {
- fclose (f);
- return errno;
- }
- if (S_ISDIR(st.st_mode)) {
- fclose (f);
- return EISDIR;
- }
- if (st.st_uid != pwd->pw_uid && st.st_uid != 0) {
- fclose (f);
- return EACCES;
- }
- if ((st.st_mode & (S_IWGRP | S_IWOTH)) != 0) {
- fclose (f);
- return EACCES;
- }
-
- while (fgets (buf, sizeof(buf), f) != NULL) {
- krb5_principal tmp;
- char *newline = buf + strcspn(buf, "\n");
-
- if(*newline != '\n') {
- int c;
- c = fgetc(f);
- if(c != EOF) {
- while(c != EOF && c != '\n')
- c = fgetc(f);
- /* line was too long, so ignore it */
- continue;
- }
- }
- *newline = '\0';
- ret = krb5_parse_name (context, buf, &tmp);
- if (ret)
- continue;
- *result = krb5_principal_compare (context, principal, tmp);
- krb5_free_principal (context, tmp);
- if (*result) {
- fclose (f);
- return 0;
- }
- }
- fclose (f);
- return 0;
-}
-
-static krb5_error_code
-check_directory(krb5_context context,
- const char *dirname,
- struct passwd *pwd,
- krb5_principal principal,
- krb5_boolean *result)
-{
- DIR *d;
- struct dirent *dent;
- char filename[MAXPATHLEN];
- krb5_error_code ret = 0;
- struct stat st;
-
- *result = FALSE;
-
- if(lstat(dirname, &st) < 0)
- return errno;
-
- if (!S_ISDIR(st.st_mode))
- return ENOTDIR;
-
- if (st.st_uid != pwd->pw_uid && st.st_uid != 0)
- return EACCES;
- if ((st.st_mode & (S_IWGRP | S_IWOTH)) != 0)
- return EACCES;
-
- if((d = opendir(dirname)) == NULL)
- return errno;
-
-#ifdef HAVE_DIRFD
- {
- int fd;
- struct stat st2;
-
- fd = dirfd(d);
- if(fstat(fd, &st2) < 0) {
- closedir(d);
- return errno;
- }
- if(st.st_dev != st2.st_dev || st.st_ino != st2.st_ino) {
- closedir(d);
- return EACCES;
- }
- }
-#endif
-
- while((dent = readdir(d)) != NULL) {
- if(strcmp(dent->d_name, ".") == 0 ||
- strcmp(dent->d_name, "..") == 0 ||
- dent->d_name[0] == '#' || /* emacs autosave */
- dent->d_name[strlen(dent->d_name) - 1] == '~') /* emacs backup */
- continue;
- snprintf(filename, sizeof(filename), "%s/%s", dirname, dent->d_name);
- ret = check_one_file(context, filename, pwd, principal, result);
- if(ret == 0 && *result == TRUE)
- break;
- ret = 0; /* don't propagate errors upstream */
- }
- closedir(d);
- return ret;
-}
-
-static krb5_boolean
-match_local_principals(krb5_context context,
- krb5_principal principal,
- const char *luser)
-{
- krb5_error_code ret;
- krb5_realm *realms, *r;
- krb5_boolean result = FALSE;
-
- /* multi-component principals can never match */
- if(krb5_principal_get_comp_string(context, principal, 1) != NULL)
- return FALSE;
-
- ret = krb5_get_default_realms (context, &realms);
- if (ret)
- return FALSE;
-
- for (r = realms; *r != NULL; ++r) {
- if(strcmp(krb5_principal_get_realm(context, principal),
- *r) != 0)
- continue;
- if(strcmp(krb5_principal_get_comp_string(context, principal, 0),
- luser) == 0) {
- result = TRUE;
- break;
- }
- }
- krb5_free_host_realm (context, realms);
- return result;
-}
-
-/**
- * Return TRUE iff `principal' is allowed to login as `luser'.
- */
-
-krb5_boolean KRB5_LIB_FUNCTION
-krb5_kuserok (krb5_context context,
- krb5_principal principal,
- const char *luser)
-{
- char *buf;
- size_t buflen;
- struct passwd *pwd;
- krb5_error_code ret;
- krb5_boolean result = FALSE;
-
- krb5_boolean found_file = FALSE;
-
-#ifdef POSIX_GETPWNAM_R
- char pwbuf[2048];
- struct passwd pw;
-
- if(getpwnam_r(luser, &pw, pwbuf, sizeof(pwbuf), &pwd) != 0)
- return FALSE;
-#else
- pwd = getpwnam (luser);
-#endif
- if (pwd == NULL)
- return FALSE;
-
-#define KLOGIN "/.k5login"
- buflen = strlen(pwd->pw_dir) + sizeof(KLOGIN) + 2; /* 2 for .d */
- buf = malloc(buflen);
- if(buf == NULL)
- return FALSE;
- /* check user's ~/.k5login */
- strlcpy(buf, pwd->pw_dir, buflen);
- strlcat(buf, KLOGIN, buflen);
- ret = check_one_file(context, buf, pwd, principal, &result);
-
- if(ret == 0 && result == TRUE) {
- free(buf);
- return TRUE;
- }
-
- if(ret != ENOENT)
- found_file = TRUE;
-
- strlcat(buf, ".d", buflen);
- ret = check_directory(context, buf, pwd, principal, &result);
- free(buf);
- if(ret == 0 && result == TRUE)
- return TRUE;
-
- if(ret != ENOENT && ret != ENOTDIR)
- found_file = TRUE;
-
- /* finally if no files exist, allow all principals matching
- <localuser>@<LOCALREALM> */
- if(found_file == FALSE)
- return match_local_principals(context, principal, luser);
-
- return FALSE;
-}
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