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- /* ====================================================================
- * Copyright (c) 1995-1999 The Apache Group. 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. All advertising materials mentioning features or use of this
- * software must display the following acknowledgment:
- * "This product includes software developed by the Apache Group
- * for use in the Apache HTTP server project (http://www.apache.org/)."
- *
- * 4. The names "Apache Server" and "Apache Group" must not be used to
- * endorse or promote products derived from this software without
- * prior written permission. For written permission, please contact
- * apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache"
- * nor may "Apache" appear in their names without prior written
- * permission of the Apache Group.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- * acknowledgment:
- * "This product includes software developed by the Apache Group
- * for use in the Apache HTTP server project (http://www.apache.org/)."
- *
- * THIS SOFTWARE IS PROVIDED BY THE APACHE GROUP ``AS IS'' AND ANY
- * EXPRESSED 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 APACHE GROUP OR
- * ITS 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.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Group and was originally based
- * on public domain software written at the National Center for
- * Supercomputing Applications, University of Illinois, Urbana-Champaign.
- * For more information on the Apache Group and the Apache HTTP server
- * project, please see <http://www.apache.org/>.
- *
- */
-
- #ifdef _OSD_POSIX
- #include "httpd.h"
- #include "http_config.h"
- #include "http_log.h"
- #include <ctype.h>
- #include <sys/utsname.h>
-
- #define ACCT_LEN 8
- #define USER_LEN 8
-
- static const char *bs2000_account = NULL;
-
-
- static void ap_pad(char *dest, size_t size, char ch)
- {
- int i = strlen(dest); /* Leave space for trailing '\0' */
-
- while (i < size-1)
- dest[i++] = ch;
-
- dest[size-1] = '\0'; /* Guarantee for trailing '\0' */
- }
-
- static void ap_str_toupper(char *str)
- {
- while (*str) {
- *str = ap_toupper(*str);
- ++str;
- }
- }
-
- /* This routine is called by http_core for the BS2000Account directive */
- /* It stores the account name for later use */
- const char *os_set_account(pool *p, const char *account)
- {
- char account_temp[ACCT_LEN+1];
-
- ap_cpystrn(account_temp, account, sizeof account_temp);
-
- /* Make account all upper case */
- ap_str_toupper(account_temp);
-
- /* Pad to length 8 */
- ap_pad(account_temp, sizeof account_temp, ' ');
-
- bs2000_account = ap_pstrdup(p, account_temp);
- return NULL;
- }
-
- /* This routine complements the setuid() call: it causes the BS2000 job
- * environment to be switched to the target user's user id.
- * That is important if CGI scripts try to execute native BS2000 commands.
- */
- int os_init_job_environment(server_rec *server, const char *user_name, int one_process)
- {
- _rini_struct inittask;
- char username[USER_LEN+1];
- int save_errno;
-
- /* We can be sure that no change to uid==0 is possible because of
- * the checks in http_core.c:set_user()
- */
-
- /* The _rini() function works only after a prior _rfork().
- * In the case of one_process, it would fail.
- */
- /* An Account is required for _rini() */
- if (bs2000_account == NULL)
- {
- ap_log_error(APLOG_MARK, APLOG_ALERT|APLOG_NOERRNO, server,
- "No BS2000Account configured - cannot switch to User %s",
- user_name);
- exit(APEXIT_CHILDFATAL);
- }
-
- /* The one_process test is placed _behind_ the BS2000Account test
- * because we never want the user to forget configuring an account.
- */
- if (one_process) {
- ap_log_error(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, server,
- "The debug mode of Apache should only "
- "be started by an unprivileged user!");
- return 0;
- }
-
- ap_cpystrn(username, user_name, sizeof username);
-
- /* Make user name all upper case */
- ap_str_toupper(username);
-
- /* Pad to length 8 */
- ap_pad(username, sizeof username, ' ');
-
- inittask.username = username;
- inittask.account = bs2000_account;
- inittask.processor_name = " ";
-
- /* Switch to the new logon user (setuid() and setgid() are done later) */
- /* Only the super use can switch identities. */
- if (_rini(&inittask) != 0) {
- save_errno = errno;
-
- ap_log_error(APLOG_MARK, APLOG_ALERT, server,
- "_rini: BS2000 auth failed for user \"%s\" acct \"%s\"",
- inittask.username, inittask.account);
-
- if (save_errno == EAGAIN) {
- /* This funny error code does NOT mean that the operation should
- * be retried. Instead it means that authentication failed
- * because of possibly incompatible `JOBCLASS'es between
- * the calling (SYSROOT) and the target non-privileged user id.
- * Help the administrator by logging a hint.
- */
- char *curr_user, curr_uid[L_cuserid];
-
- if ((curr_user = cuserid(curr_uid)) == NULL) {
- /* This *SHOULD* not occur. But if it does, deal with it. */
- ap_snprintf(curr_uid, sizeof curr_uid, "#%u", getuid());
- curr_user = curr_uid;
- }
-
- ap_log_error(APLOG_MARK, APLOG_ALERT|APLOG_NOERRNO, server,
- "_rini: Hint: Possible reason: JOBCLASS of user %s "
- "not compatible with that of user %s ?",
- curr_user, inittask.username);
- }
- exit(APEXIT_CHILDFATAL);
- }
-
- return 0;
- }
-
- /* BS2000 requires a "special" version of fork() before a setuid()/_rini() call */
- /* Additionally, there's an OS release dependency here :-((( */
- /* I'm sorry, but there was no other way to make it work. -Martin */
- pid_t os_fork(void)
- {
- struct utsname os_version;
-
- /*
- * When we run as a normal user (and bypass setuid() and _rini()),
- * we use the regular fork().
- */
- if (getuid() != 0) {
- return fork();
- }
-
- if (uname(&os_version) >= 0)
- {
- /*
- * Old versions (before XPG4 SPEC1170) don't work with Apache
- * and they require a fork(), not a _rfork()
- */
- if (strcmp(os_version.release, "01.0A") == 0 ||
- strcmp(os_version.release, "02.0A") == 0 ||
- strcmp(os_version.release, "02.1A") == 0)
- {
- return fork();
- }
-
- /* The following versions are special:
- * OS versions before A17 work with regular fork() only,
- * later versions with _rfork() only.
- */
- if (strcmp(os_version.release, "01.1A") == 0 ||
- strcmp(os_version.release, "03.0A") == 0 ||
- strcmp(os_version.release, "03.1A") == 0 ||
- strcmp(os_version.release, "04.0A") == 0)
- {
- return (strcmp (os_version.version, "A17") < 0)
- ? fork() : _rfork();
- }
- }
-
- /* All later OS versions will require _rfork()
- * to prepare for authorization with _rini()
- */
- return _rfork();
- }
-
- #else /* _OSD_POSIX */
- void bs2login_is_not_here()
- {
- }
- #endif /* _OSD_POSIX */
-