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Diffstat (limited to 'server/rfc1413.c')
| -rw-r--r-- | server/rfc1413.c | 288 |
1 files changed, 0 insertions, 288 deletions
diff --git a/server/rfc1413.c b/server/rfc1413.c deleted file mode 100644 index 40d221bc10..0000000000 --- a/server/rfc1413.c +++ /dev/null @@ -1,288 +0,0 @@ -/* ==================================================================== - * The Apache Software License, Version 1.1 - * - * Copyright (c) 2000-2001 The Apache Software Foundation. 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. The end-user documentation included with the redistribution, - * if any, must include the following acknowledgment: - * "This product includes software developed by the - * Apache Software Foundation (http://www.apache.org/)." - * Alternately, this acknowledgment may appear in the software itself, - * if and wherever such third-party acknowledgments normally appear. - * - * 4. The names "Apache" and "Apache Software Foundation" 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 name, without prior written - * permission of the Apache Software Foundation. - * - * THIS SOFTWARE IS PROVIDED ``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 SOFTWARE FOUNDATION 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 Software Foundation. For more - * information on the Apache Software Foundation, please see - * <http://www.apache.org/>. - * - * Portions of this software are based upon public domain software - * originally written at the National Center for Supercomputing Applications, - * University of Illinois, Urbana-Champaign. - */ - -/* TODO - put timeouts back in */ -/* - * rfc1413() speaks a common subset of the RFC 1413, AUTH, TAP and IDENT - * protocols. The code queries an RFC 1413 etc. compatible daemon on a remote - * host to look up the owner of a connection. The information should not be - * used for authentication purposes. This routine intercepts alarm signals. - * - * Diagnostics are reported through syslog(3). - * - * Author: Wietse Venema, Eindhoven University of Technology, - * The Netherlands. - */ - -/* Some small additions for Apache --- ditch the "sccsid" var if - * compiling with gcc (it *has* changed), include ap_config.h for the - * prototypes it defines on at least one system (SunlOSs) which has - * them missing from the standard header files, and one minor change - * below (extra parens around assign "if (foo = bar) ..." to shut up - * gcc -Wall). - */ - -/* Rewritten by David Robinson */ - -#include "apr.h" -#include "apr_network_io.h" -#include "apr_strings.h" -#include "apr_lib.h" - -#define APR_WANT_STDIO -#define APR_WANT_STRFUNC -#include "apr_want.h" - -#include "ap_config.h" -#include "httpd.h" /* for server_rec, conn_rec, etc. */ -#include "http_log.h" /* for aplog_error */ -#include "rfc1413.h" -#include "http_main.h" /* set_callback_and_alarm */ -#include "util_ebcdic.h" - -/* Local stuff. */ -/* Semi-well-known port */ -#define RFC1413_PORT 113 -/* maximum allowed length of userid */ -#define RFC1413_USERLEN 512 -/* rough limit on the amount of data we accept. */ -#define RFC1413_MAXDATA 1000 - -#ifndef RFC1413_TIMEOUT -#define RFC1413_TIMEOUT 30 -#endif -#define FROM_UNKNOWN "unknown" - -int ap_rfc1413_timeout = RFC1413_TIMEOUT; /* Global so it can be changed */ - -static apr_status_t rfc1413_connect(apr_socket_t **newsock, conn_rec *conn, - server_rec *srv) -{ - apr_status_t rv; - apr_sockaddr_t *localsa, *destsa; - - if ((rv = apr_sockaddr_info_get(&localsa, conn->local_ip, APR_UNSPEC, - 0, /* ephemeral port */ - 0, conn->pool)) != APR_SUCCESS) { - /* This should not fail since we have a numeric address string - * as the host. */ - ap_log_error(APLOG_MARK, APLOG_CRIT, rv, srv, - "rfc1413: apr_sockaddr_info_get(%s) failed", - conn->local_ip); - return rv; - } - - if ((rv = apr_sockaddr_info_get(&destsa, conn->remote_ip, - localsa->sa.sin.sin_family, /* has to match */ - RFC1413_PORT, 0, conn->pool)) != APR_SUCCESS) { - /* This should not fail since we have a numeric address string - * as the host. */ - ap_log_error(APLOG_MARK, APLOG_CRIT, rv, srv, - "rfc1413: apr_sockaddr_info_get(%s) failed", - conn->remote_ip); - return rv; - } - - if ((rv = apr_socket_create(newsock, - localsa->sa.sin.sin_family, /* has to match */ - SOCK_STREAM, conn->pool)) != APR_SUCCESS) { - ap_log_error(APLOG_MARK, APLOG_CRIT, rv, srv, - "rfc1413: error creating query socket"); - return rv; - } - - if ((rv = apr_setsocketopt(*newsock, APR_SO_TIMEOUT, - (apr_int32_t)(ap_rfc1413_timeout - * APR_USEC_PER_SEC))) - != APR_SUCCESS) { - ap_log_error(APLOG_MARK, APLOG_CRIT, rv, srv, - "rfc1413: error setting query socket timeout"); - apr_socket_close(*newsock); - return rv; - } - -/* - * Bind the local and remote ends of the query socket to the same - * IP addresses as the connection under investigation. We go - * through all this trouble because the local or remote system - * might have more than one network address. The RFC1413 etc. - * client sends only port numbers; the server takes the IP - * addresses from the query socket. - */ - - if ((rv = apr_bind(*newsock, localsa)) != APR_SUCCESS) { - ap_log_error(APLOG_MARK, APLOG_CRIT, rv, srv, - "rfc1413: Error binding query socket to local port"); - apr_socket_close(*newsock); - return rv; - } - -/* - * errors from connect usually imply the remote machine doesn't support - * the service; don't log such an error - */ - if ((rv = apr_connect(*newsock, destsa)) != APR_SUCCESS) { - apr_socket_close(*newsock); - return rv; - } - - return APR_SUCCESS; -} - -static apr_status_t rfc1413_query(apr_socket_t *sock, conn_rec *conn, - server_rec *srv) -{ - apr_port_t rmt_port, our_port; - apr_port_t sav_rmt_port, sav_our_port; - apr_size_t i; - char *cp; - char buffer[RFC1413_MAXDATA + 1]; - char user[RFC1413_USERLEN + 1]; /* XXX */ - apr_size_t buflen; - apr_sockaddr_t *localsa; - - apr_socket_addr_get(&localsa, APR_LOCAL, sock); - apr_sockaddr_port_get(&sav_our_port, localsa); - sav_rmt_port = RFC1413_PORT; - - /* send the data */ - buflen = apr_snprintf(buffer, sizeof(buffer), "%hu,%hu\r\n", sav_rmt_port, - sav_our_port); - ap_xlate_proto_to_ascii(buffer, buflen); - - /* send query to server. Handle short write. */ - i = 0; - while (i < buflen) { - apr_size_t j = strlen(buffer + i); - apr_status_t status; - status = apr_send(sock, buffer+i, &j); - if (status != APR_SUCCESS) { - ap_log_error(APLOG_MARK, APLOG_CRIT, status, srv, - "write: rfc1413: error sending request"); - return status; - } - else if (j > 0) { - i+=j; - } - } - - /* - * Read response from server. - the response should be newline - * terminated according to rfc - make sure it doesn't stomp its - * way out of the buffer. - */ - - i = 0; - memset(buffer, '\0', sizeof(buffer)); - /* - * Note that the strchr function below checks for \012 instead of '\n' - * this allows it to work on both ASCII and EBCDIC machines. - */ - while((cp = strchr(buffer, '\012')) == NULL && i < sizeof(buffer) - 1) { - apr_size_t j = sizeof(buffer) - 1 - i; - apr_status_t status; - status = apr_recv(sock, buffer+i, &j); - if (status != APR_SUCCESS) { - ap_log_error(APLOG_MARK, APLOG_CRIT, status, srv, - "read: rfc1413: error reading response"); - return status; - } - else if (j > 0) { - i+=j; - } - else if (status == APR_SUCCESS && j == 0) { - /* Oops... we ran out of data before finding newline */ - return APR_EINVAL; - } - } - -/* RFC1413_USERLEN = 512 */ - ap_xlate_proto_from_ascii(buffer, i); - if (sscanf(buffer, "%hu , %hu : USERID :%*[^:]:%512s", &rmt_port, &our_port, - user) != 3 || sav_rmt_port != rmt_port - || sav_our_port != our_port) - return APR_EINVAL; - - /* - * Strip trailing carriage return. It is part of the - * protocol, not part of the data. - */ - - if ((cp = strchr(user, '\r'))) - *cp = '\0'; - - conn->remote_logname = apr_pstrdup(conn->pool, user); - - return APR_SUCCESS; -} - -char *ap_rfc1413(conn_rec *conn, server_rec *srv) -{ - apr_socket_t *sock; - apr_status_t rv; - - rv = rfc1413_connect(&sock, conn, srv); - if (rv == APR_SUCCESS) { - rv = rfc1413_query(sock, conn, srv); - apr_socket_close(sock); - } - if (rv != APR_SUCCESS) { - conn->remote_logname = FROM_UNKNOWN; - } - return conn->remote_logname; -} |