pax_global_header00006660000000000000000000000064123743657700014530gustar00rootroot0000000000000052 comment=9065a97f0c538630b75347d85ed2b5d06f4afe8a mod_proxy_msrpc-mod_proxy_msrpc-0.6/000077500000000000000000000000001237436577000200435ustar00rootroot00000000000000mod_proxy_msrpc-mod_proxy_msrpc-0.6/.gitignore000066400000000000000000000002361237436577000220340ustar00rootroot00000000000000Makefile /aclocal.m4 /autom4te.cache /config.log /config.status /test/check.log /test/check_msrpc_pdu_parser /test/check_msrpc_sync .libs *.la *.lo *.slo *.o mod_proxy_msrpc-mod_proxy_msrpc-0.6/Makefile.in000066400000000000000000000007351237436577000221150ustar00rootroot00000000000000all: make -C src all check: all make -C test check install: all $(warning ) $(warning ---[ MANUAL INSTALLATION REQUIRED ]---) $(warning To install the module, please copy the file src/.libs/mod_proxy_msrpc.so) $(warning to the directory where Apache httpd loads its modules from.) $(warning ) $(error The 'install' target isn't implemented yet) clean: make -C src clean make -C test clean rm -vf Makefile config.log config.status .PHONY: all clean check install mod_proxy_msrpc-mod_proxy_msrpc-0.6/README.pod000066400000000000000000000054171237436577000215130ustar00rootroot00000000000000=head1 NAME mod_proxy_msrpc - Apache module for Outlook Anywhere support in reverse proxy setups =head1 SYNOPSIS Build the module: ./configure make Load the module: LoadModule proxy_msrpc_module /path/to/your/mod_proxy_msrpc.so Enable the module inside a configuration container (or globally): OutlookAnywherePassthrough On =head1 DESCRIPTION This module intends to make Apache httpd work in a reverse proxy setup in front of a MS Exchange server offering Outlook Anywhere services. Without it, Apache would block any Outlook Anywhere requests for reasons documented very well in https://issues.apache.org/bugzilla/show_bug.cgi?id=40029. Outlook and Exchange use an extended version of DCE RPC called I to communicate with each other. When I is in use, the MSRPC messages are wrapped into HTTP alike requests and responses. The mod_proxy_msrpc module detects these MSRPC messages and forwards them to the server or client as needed. As soon as the initial handshake completed, i.e. Exchange accepted the connecting client, the mod_proxy_msrpc module switches into tunnel mode and forwards all data from client to server and vice versa. =head1 CAVEATS Some older Exchange versions (e.g. Exchange Server 2007) are known to sync offline address books and calendar information via other protocols than Outlook Anywhere (i.e. MSRPC via HTTP). For these Exchange versions functionality of this module is limited to enabling receiving and sending mail. I.e. Address book and calendar synchronization doesn't work with these Exchange versions. =head1 DIAGNOSTICS If you encounter any problems, you can set following directive: LogLevel info proxy_msrpc:trace2 This will enable detailed debug logging for the proxy_msrpc module, which will be written to the usual Apache log destinations (e.g. to file error.log). =head1 BUGS Please use the GitHub issue tracker to check for any pending issues or to report any new bugs. https://github.com/bombadil/mod_proxy_msrpc/issues =head1 HISTORY This module was initially written by Micha Lenk as employee of Astaro GmbH & Co. KG, Germany, to facilitate Outlook Anywhere passthrough for the Sophos UTM's Web Application Firewall. It was first released as part of UTM 9.1 in May 2013. Sophos generously agreed to contribute the source code to the open source community under the terms of the Apache License 2.0. =head1 AUTHOR This module was written by Micha Lenk . =head1 COPYRIGHT Copyright 2013 Micha Lenk , Astaro GmbH & Co. KG - a Sophos company. =head1 LICENSE This module is free software; you may redistribute it and/or modify it under the terms of the Apache License, Version 2.0. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 =cut mod_proxy_msrpc-mod_proxy_msrpc-0.6/TODO000066400000000000000000000012251237436577000205330ustar00rootroot00000000000000TODO list When I implemented mod_proxy_msrpc, I took some notes about what might need to get improved later (e.g. to improve the code structure, style, or what ever). This file is an unstructured collection of such TODO items: - get rid of libuuid (APR provides that functionality too) - review sync files location - invalidate established tunnel on client/server disconnect - review session cache - track used backend and save it in a socache hash table, using the AssociationGroupId as lookup key so that requests with a given AssociationGroupId are all routed to the same backend (see also http://msdn.microsoft.com/en-us/library/cc244005.aspx). mod_proxy_msrpc-mod_proxy_msrpc-0.6/configure000077500000000000000000004627311237436577000217670ustar00rootroot00000000000000#! /bin/sh # Guess values for system-dependent variables and create Makefiles. # Generated by GNU Autoconf 2.69 for mod_proxy_msrpc 0.1.1. # # Report bugs to . # # # Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc. # # # This configure script is free software; the Free Software Foundation # gives unlimited permission to copy, distribute and modify it. ## -------------------- ## ## M4sh Initialization. ## ## -------------------- ## # Be more Bourne compatible DUALCASE=1; export DUALCASE # for MKS sh if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then : emulate sh NULLCMD=: # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which # is contrary to our usage. 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When coming back to configure, we # need to make the FD available again. if test "$no_create" != yes; then ac_cs_success=: ac_config_status_args= test "$silent" = yes && ac_config_status_args="$ac_config_status_args --quiet" exec 5>/dev/null $SHELL $CONFIG_STATUS $ac_config_status_args || ac_cs_success=false exec 5>>config.log # Use ||, not &&, to avoid exiting from the if with $? = 1, which # would make configure fail if this is the last instruction. $ac_cs_success || as_fn_exit 1 fi if test -n "$ac_unrecognized_opts" && test "$enable_option_checking" != no; then { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: unrecognized options: $ac_unrecognized_opts" >&5 $as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2;} fi mod_proxy_msrpc-mod_proxy_msrpc-0.6/configure.ac000066400000000000000000000026201237436577000223310ustar00rootroot00000000000000AC_INIT([mod_proxy_msrpc], [0.1.1], [micha@lenk.info]) # Checks for programs. AC_PROG_CC AC_CHECK_PROGS([APXS], [apxs2 apxs], []) if test -z "$APXS"; then AC_MSG_ERROR([could not find APXS]) fi APXS_INCLUDES="`$APXS -q INCLUDEDIR 2> /dev/null`" # Check for Apache version. AC_MSG_CHECKING([for ap_socache.h in $APXS_INCLUDES]) if test -e [$APXS_INCLUDES/ap_socache.h]; then AC_MSG_RESULT([yes]) else AC_MSG_RESULT([no]) AC_MSG_ERROR([ap_socache.h should be available with Apache httpd 2.4.0 or later.]) fi # Check for libraries. PKG_PROG_PKG_CONFIG PKG_CHECK_MODULES([APR], [apr-1 >= 1.0]) PKG_CHECK_MODULES([APRUTIL], [apr-util-1]) PKG_CHECK_MODULES([CHECK], [check >= 0.9.4]) # Checks for header files. AC_HEADER_STDC AC_CHECK_HEADERS([fcntl.h limits.h stdlib.h string.h unistd.h sys/types.h sys/stat.h sys/inotify.h sys/select.h uuid/uuid.h], [], AC_MSG_ERROR([some of the required header files could not be found.])) # Checks for typedefs, structures, and compiler characteristics. AC_C_CONST AC_TYPE_SIZE_T AC_TYPE_INT8_T AC_TYPE_UINT8_T AC_TYPE_UINT16_T AC_TYPE_UINT32_T # Checks for library functions. AC_FUNC_MEMCMP AC_CHECK_FUNCS([strcasecmp strchr strrchr inotify_init1]) AC_CHECK_LIB([uuid], [uuid_unparse], [UUIDLIB=-luuid], AC_MSG_ERROR([could not find libuuid])) AC_SUBST([UUIDLIB]) AC_CONFIG_SRCDIR([src/mod_proxy_msrpc.c]) AC_CONFIG_FILES([Makefile src/Makefile test/Makefile]) AC_OUTPUT mod_proxy_msrpc-mod_proxy_msrpc-0.6/src/000077500000000000000000000000001237436577000206325ustar00rootroot00000000000000mod_proxy_msrpc-mod_proxy_msrpc-0.6/src/Makefile.in000066400000000000000000000006201237436577000226750ustar00rootroot00000000000000modproxymsrpc_HEADER=msrpc_pdu_private.h msrpc_pdu_parser.h msrpc_sync.h modproxymsrpc_SOURCES=mod_proxy_msrpc.c msrpc_pdu_parser.c msrpc_sync.c all: .libs/mod_proxy_msrpc.so .libs/mod_proxy_msrpc.so: $(modproxymsrpc_HEADER) $(modproxymsrpc_SOURCES) @APXS@ @UUIDLIB@ $(LIBS) -c $(modproxymsrpc_SOURCES) check: clean: rm -rf .libs *.lo *.slo mod_proxy_msrpc.la Makefile .PHONY: all check clean mod_proxy_msrpc-mod_proxy_msrpc-0.6/src/mod_proxy_msrpc.c000066400000000000000000002127251237436577000242330ustar00rootroot00000000000000/************************************************************************** * Copyright (C) 2013 Astaro GmbH & Co. KG -- a Sophos company * Astaro GmbH & Co. KG licenses this file to You under the Apache License, * Version 2.0 (the "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * * Author: Micha Lenk -- 2013-03-05 * ***************************************************************************/ /* Tunnel Microsoft's RPC_IN_DATA and RPC_OUT_DATA methods through to the server * * The source code of this module is based heavily on the source code of the * mod_proxy_http and the mod_proxy_connect modules. */ #include #include #include #include #include #include #include #include #include #include "msrpc_pdu_parser.h" #include "msrpc_sync.h" #define CONN_BLKSZ AP_IOBUFSIZE #define MSRPC_INITIAL_PDU_BUFLEN MSRPC_PDU_MAXLENGTH #ifdef APLOG_USE_MODULE APLOG_USE_MODULE(proxy_msrpc); #endif module AP_MODULE_DECLARE_DATA proxy_msrpc_module; /* methods used by Outlook Anywhere */ enum { MSRPC_M_DATA_IN = 0, MSRPC_M_DATA_OUT, MSRPC_M_LAST }; static const char *const proxy_msrpc_id = "proxy-msrpc"; static int proxy_msrpc_configured; static int msrpc_methods[MSRPC_M_LAST]; static ap_socache_provider_t *msrpc_session_cache_provider = NULL; static ap_socache_instance_t *msrpc_session_cache = NULL; static apr_global_mutex_t *msrpc_session_cache_mutex = NULL; static int msrpc_session_cache_expiry = 5000000; // default: 5 sec typedef enum { SESSION_INIT = 0, SESSION_TUNNEL, SESSION_BROKEN, } msrpc_session_state_t; static const char const *session_state_name[] = { "INIT", "TUNNEL", "BROKEN", NULL }; typedef struct { msrpc_session_state_t state; } msrpc_session_rec_t; typedef enum { MSRPC_SERVER_TO_CLIENT, MSRPC_CLIENT_TO_SERVER } proxy_msrpc_direction_t; typedef struct { int enabled:1; int enabled_set:1; apr_array_header_t *user_agents; } proxy_msrpc_conf_t; typedef struct { apr_int64_t body_length; apr_bucket_brigade *client_bb; apr_bucket_brigade *server_bb; char initial_pdu[MSRPC_INITIAL_PDU_BUFLEN]; apr_off_t initial_pdu_offset; char outlook_session[37]; int initialized; } proxy_msrpc_request_data_t; typedef struct _msrpc_backend { const char *proxy_function; proxy_conn_rec *conn; server_rec *server; } msrpc_backend_t; static int proxy_msrpc_precfg(apr_pool_t *pconf, apr_pool_t *plog, apr_pool_t *ptmp) { apr_status_t rv = ap_mutex_register(pconf, proxy_msrpc_id, NULL, APR_LOCK_DEFAULT, 0); if (rv != APR_SUCCESS) { ap_log_perror(APLOG_MARK, APLOG_CRIT, rv, plog, "failed to register %s mutex", proxy_msrpc_id); return 500; /* An HTTP status would be a misnomer! */ } msrpc_session_cache_provider = ap_lookup_provider(AP_SOCACHE_PROVIDER_GROUP, AP_SOCACHE_DEFAULT_PROVIDER, AP_SOCACHE_PROVIDER_VERSION); proxy_msrpc_configured = 0; return OK; } static apr_status_t msrpc_session_cache_remove_lock(void *data) { if (msrpc_session_cache_mutex) { apr_global_mutex_destroy(msrpc_session_cache_mutex); msrpc_session_cache_mutex = NULL; } return APR_SUCCESS; } static apr_status_t msrpc_session_cache_destroy(void *data) { if (msrpc_session_cache) { msrpc_session_cache_provider->destroy(msrpc_session_cache, (server_rec *)data); msrpc_session_cache = NULL; } return APR_SUCCESS; } static apr_status_t proxy_msrpc_register_outlook_session(request_rec *r, proxy_msrpc_request_data_t *rdata) { const char *cookie = rdata->outlook_session; ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, r, "%s: trying to register outlook session %s in state '%s'", r->method, cookie, session_state_name[0]); /* OK, we're on. Grab mutex to do our business */ apr_status_t rv = apr_global_mutex_lock(msrpc_session_cache_mutex); if (rv != APR_SUCCESS) { ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, "%s: Failed to lock outlook session cache %s", r->method, cookie); return rv; } msrpc_session_rec_t val; unsigned int vallen = sizeof(val); rv = msrpc_session_cache_provider->retrieve(msrpc_session_cache, r->server, (unsigned char *)cookie, strlen(cookie), (unsigned char *)&val, &vallen, r->pool); if (rv == APR_SUCCESS) { ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, "%s: There is already a registered Outlook Session %s in cache, it is in state '%s'", r->method, cookie, session_state_name[val.state]); rv = APR_FROM_OS_ERROR(EPROTO); } else { val.state = SESSION_INIT; apr_time_t expiry = apr_time_now() + msrpc_session_cache_expiry; rv = msrpc_session_cache_provider->store(msrpc_session_cache, r->server, (unsigned char*)cookie, strlen(cookie), expiry, (unsigned char*)&val, sizeof(val), r->pool); } /* We're done with the mutex */ apr_status_t mutex_rv = apr_global_mutex_unlock(msrpc_session_cache_mutex); if (mutex_rv != APR_SUCCESS) { ap_log_rerror(APLOG_MARK, APLOG_ERR, mutex_rv, r, "%s: Failed to release mutex!", r->method); return mutex_rv; } if (rv == APR_SUCCESS) { ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, "%s: Successfully registered outlook session %s in state '%s'", r->method, cookie, session_state_name[SESSION_INIT]); } else { ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, "%s: Failed to register Outlook Session %s in cache", r->method, cookie); } return rv; } static apr_status_t proxy_msrpc_validate_outlook_session(request_rec *r, proxy_msrpc_request_data_t *rdata, msrpc_session_state_t newstate) { uuid_t *vc_cookie = NULL; const char *error = NULL; const char *cookie = NULL; apr_status_t rv = msrpc_rts_get_virtual_channel_cookie(rdata->initial_pdu, &vc_cookie, &error); if (rv != APR_SUCCESS) { ap_log_rerror(APLOG_MARK, APLOG_INFO, rv, r, "%s: Failed to validate Outlook Session: Cannot decode virtual channel cookie: %s", r->method, error); return rv; } uuid_unparse(*vc_cookie, rdata->outlook_session); cookie = rdata->outlook_session; ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, r, "%s: trying to update Outlook Session %s to state '%s'", r->method, cookie, session_state_name[newstate]); /* OK, we're on. Grab mutex to do our business */ rv = apr_global_mutex_lock(msrpc_session_cache_mutex); if (rv != APR_SUCCESS) { ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, "%s: Failed to lock outlook session cache %s", r->method, cookie); return rv; } msrpc_session_rec_t val; unsigned int vallen = sizeof(val); rv = msrpc_session_cache_provider->retrieve(msrpc_session_cache, r->server, (unsigned char *)cookie, strlen(cookie), (unsigned char *)&val, &vallen, r->pool); if (rv == APR_SUCCESS) { ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, r, "%s: Outlook Session %s found in cache", r->method, cookie); if (val.state == SESSION_INIT) { val.state = newstate; apr_time_t expiry = apr_time_now() + msrpc_session_cache_expiry; rv = msrpc_session_cache_provider->store(msrpc_session_cache, r->server, (unsigned char*)cookie, strlen(cookie), expiry, (unsigned char*)&val, sizeof(val), r->pool); if (rv == APR_SUCCESS) { ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, "%s: Outlook Session %s updated to state %s'", r->method, cookie, session_state_name[newstate]); } else { ap_log_rerror(APLOG_MARK, APLOG_INFO, rv, r, "%s: Failed to update Outlook Session %s in cache", r->method, cookie); } } else { ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, "%s: The registered Outlook Session %s is in unexpected state '%s'", r->method, cookie, session_state_name[val.state]); rv = APR_FROM_OS_ERROR(EPROTO); } } else { ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, "%s: There is no registered Outlook Session %s in cache", r->method, cookie); } /* We're done with the mutex */ apr_status_t mutex_rv = apr_global_mutex_unlock(msrpc_session_cache_mutex); if (mutex_rv != APR_SUCCESS) { ap_log_rerror(APLOG_MARK, APLOG_ERR, mutex_rv, r, "%s: Failed to release mutex!", r->method); return mutex_rv; } return rv; } static apr_status_t proxy_msrpc_check_outlook_session_state(request_rec *r, proxy_msrpc_request_data_t *rdata, msrpc_session_state_t expected_state) { if (!rdata->outlook_session[0]) { ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, "Outlook Session cookie missing"); return APR_FROM_OS_ERROR(EPROTO); } const char *session = rdata->outlook_session; ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, r, "%s: Checking whether Outlook Session %s is in state '%s'", r->method, session, session_state_name[expected_state]); /* OK, we're on. Grab mutex to do our business */ apr_status_t rv = apr_global_mutex_lock(msrpc_session_cache_mutex); if (rv != APR_SUCCESS) { ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, "%s: Failed to lock cache for outlook session %s", r->method, session); return rv; } msrpc_session_rec_t val; unsigned int vallen = sizeof(val); rv = msrpc_session_cache_provider->retrieve(msrpc_session_cache, r->server, (unsigned char *)session, strlen(session), (unsigned char *)&val, &vallen, r->pool); /* We're done with the mutex */ apr_status_t mutex_rv = apr_global_mutex_unlock(msrpc_session_cache_mutex); if (mutex_rv != APR_SUCCESS) { ap_log_rerror(APLOG_MARK, APLOG_ERR, mutex_rv, r, "%s: Failed to release mutex!", r->method); return mutex_rv; } /* evaluate the result of the cache retrieval */ if (rv == APR_SUCCESS) { if (val.state == expected_state) { ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, "%s: Outlook Session %s is in expected state '%s'", r->method, session, session_state_name[val.state]); } else { ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, "%s: The registered Outlook Session %s is in unexpected state '%s'", r->method, session, session_state_name[val.state]); rv = APR_FROM_OS_ERROR(EPROTO); } } else { ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, "%s: Failed to retrieve Outlook Session %s from cache", r->method, session); } return rv; } static int proxy_msrpc_init(apr_pool_t *p, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *s) { if (!proxy_msrpc_configured) { /* don't waste the overhead of initialization and creating mutex */ return OK; } if (msrpc_session_cache_provider == NULL) { ap_log_perror(APLOG_MARK, APLOG_CRIT, 0, plog, "Please select a socache provider with OutlookAnywhereSOCache " "(no default found on this platform). Maybe you need to " "load mod_socache_shmcb or another socache module first"); return 500; /* An HTTP status would be a misnomer! */ } /* create a mutex for the session cache */ apr_status_t rv = ap_global_mutex_create(&msrpc_session_cache_mutex, NULL, proxy_msrpc_id, NULL, s, p, 0); if (rv != APR_SUCCESS) { ap_log_perror(APLOG_MARK, APLOG_CRIT, rv, plog, "failed to create %s mutex", proxy_msrpc_id); return 500; /* An HTTP status would be a misnomer! */ } apr_pool_cleanup_register(p, NULL, msrpc_session_cache_remove_lock, apr_pool_cleanup_null); /* create the session cache */ const char *errmsg = msrpc_session_cache_provider->create(&msrpc_session_cache, NULL, ptemp, p); if (errmsg) { ap_log_perror(APLOG_MARK, APLOG_CRIT, rv, plog, "%s", errmsg); return 500; /* An HTTP status would be a misnomer! */ } static struct ap_socache_hints msrpc_session_cache_hints = { 40, sizeof(msrpc_session_rec_t), 0 }; msrpc_session_cache_hints.expiry_interval = msrpc_session_cache_expiry; rv = msrpc_session_cache_provider->init(msrpc_session_cache, proxy_msrpc_id, &msrpc_session_cache_hints, s, p); if (rv != APR_SUCCESS) { ap_log_perror(APLOG_MARK, APLOG_CRIT, rv, plog, "failed to initialise %s cache", proxy_msrpc_id); return 500; /* An HTTP status would be a misnomer! */ } apr_pool_cleanup_register(p, (void*)s, msrpc_session_cache_destroy, apr_pool_cleanup_null); /* Register used HTTP methods */ msrpc_methods[MSRPC_M_DATA_IN] = ap_method_register(p, "RPC_IN_DATA"); msrpc_methods[MSRPC_M_DATA_OUT] = ap_method_register(p, "RPC_OUT_DATA"); return OK; } static void proxy_msrpc_child_init(apr_pool_t *p, server_rec *s) { if (!proxy_msrpc_configured) { return; /* don't waste the overhead of creating mutex & cache */ } const char *lock = apr_global_mutex_lockfile(msrpc_session_cache_mutex); apr_status_t rv = apr_global_mutex_child_init(&msrpc_session_cache_mutex, lock, p); if (rv != APR_SUCCESS) { ap_log_error(APLOG_MARK, APLOG_CRIT, rv, s, "failed to initialise mutex in child_init"); } } /* The function proxy_msrpc_process_data() is currently limited to * simple tunneling of the binary data (in blocks of CONN_BLKSZ) from * client to server and vice versa. */ /* TODO: Add length validation of Outlook Anywhere (RPC over HTTP) PDUs * so that we don't end up accidentally tunneling real HTTP traffic. */ static apr_status_t proxy_msrpc_process_data(request_rec *r, conn_rec *c_i, conn_rec *c_o, apr_bucket_brigade *bb, proxy_msrpc_direction_t dir) { apr_status_t rv; apr_off_t len; const char *name = (dir == MSRPC_SERVER_TO_CLIENT) ? "server" : "client"; do { apr_brigade_cleanup(bb); rv = ap_get_brigade(c_i->input_filters, bb, AP_MODE_READBYTES, APR_NONBLOCK_READ, CONN_BLKSZ); if (rv == APR_SUCCESS) { if (c_o->aborted) return APR_EPIPE; if (APR_BRIGADE_EMPTY(bb)) break; len = -1; apr_brigade_length(bb, 0, &len); if (dir == MSRPC_SERVER_TO_CLIENT) r->bytes_sent += len; ap_log_rerror(APLOG_MARK, APLOG_TRACE1, 0, r, "read %" APR_OFF_T_FMT " bytes from %s", len, name); rv = ap_pass_brigade(c_o->output_filters, bb); if (rv == APR_SUCCESS) { ap_fflush(c_o->output_filters, bb); } else { ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, "error on %s - ap_pass_brigade", name); } } else if (!APR_STATUS_IS_EAGAIN(rv)) { if (APR_STATUS_IS_ECONNRESET(rv)) { ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, r, "connection reset by %s", name); } else { ap_log_rerror(APLOG_MARK, APLOG_DEBUG, rv, r, "error on %s - ap_get_brigade", name); } } } while (rv == APR_SUCCESS); if (APR_STATUS_IS_EAGAIN(rv)) { rv = APR_SUCCESS; } return rv; } static int proxy_msrpc_pass_brigade(apr_bucket_alloc_t *bucket_alloc, request_rec *r, proxy_conn_rec *p_conn, conn_rec *origin, apr_bucket_brigade *bb, int flush) { apr_status_t status; apr_off_t transferred; if (flush) { apr_bucket *e = apr_bucket_flush_create(bucket_alloc); APR_BRIGADE_INSERT_TAIL(bb, e); } apr_brigade_length(bb, 0, &transferred); if (transferred != -1) p_conn->worker->s->transferred += transferred; status = ap_pass_brigade(origin->output_filters, bb); if (status != APR_SUCCESS) { ap_log_rerror(APLOG_MARK, APLOG_ERR, status, r, "pass request body failed to %pI (%s)", p_conn->addr, p_conn->hostname); if (origin->aborted) { const char *ssl_note; if (((ssl_note = apr_table_get(origin->notes, "SSL_connect_rv")) != NULL) && (strcmp(ssl_note, "err") == 0)) { return ap_proxyerror(r, HTTP_INTERNAL_SERVER_ERROR, "Error during SSL Handshake with" " remote server"); } return APR_STATUS_IS_TIMEUP(status) ? HTTP_GATEWAY_TIME_OUT : HTTP_BAD_GATEWAY; } else { return HTTP_BAD_REQUEST; } } apr_brigade_cleanup(bb); return OK; } static int proxy_msrpc_send_request_headers(request_rec *r, char *url, apr_bucket_brigade *bb, proxy_conn_rec *p_conn, conn_rec *origin) { apr_pool_t *p = r->pool; /* send method line */ char *buf = apr_pstrcat(p, r->method, " ", url, " HTTP/1.1" CRLF, NULL); apr_bucket *b = apr_bucket_pool_create(buf, strlen(buf), p, bb->bucket_alloc); APR_BRIGADE_INSERT_TAIL(bb, b); /* send request headers */ const apr_array_header_t *headers_in_array = apr_table_elts(r->headers_in); const apr_table_entry_t *headers_in = (const apr_table_entry_t *)headers_in_array->elts; const char *client_auth = NULL; int i; for (i = 0; i < headers_in_array->nelts; i++) { if (!headers_in[i].key || !headers_in[i].val) { continue; } if (!strcasecmp(headers_in[i].key, "Authorization")) { client_auth = headers_in[i].val; } ap_log_rerror(APLOG_MARK, APLOG_TRACE3, 0, r, "%s: Sending HTTP request header line [%s: %s]", r->method, headers_in[i].key, headers_in[i].val); buf = apr_pstrcat(p, headers_in[i].key, ": ", headers_in[i].val, CRLF, NULL); b = apr_bucket_pool_create(buf, strlen(buf), p, bb->bucket_alloc); APR_BRIGADE_INSERT_TAIL(bb, b); } /* debug output for client authentication type */ if (client_auth) { const char *auth_param = strchrnul(client_auth, ' '); assert(auth_param > client_auth); char *auth_type = apr_pstrndup(r->pool, client_auth, auth_param - client_auth); ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, "%s: client auth: %s", r->method, auth_type); } else { ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, "%s: client auth: missing", r->method); } /* add empty line at the end of the headers */ b = apr_bucket_immortal_create(CRLF, 2, bb->bucket_alloc); APR_BRIGADE_INSERT_TAIL(bb, b); return proxy_msrpc_pass_brigade(bb->bucket_alloc, r, p_conn, origin, bb, 1); } static int proxy_msrpc_send_pdu(request_rec *r, char *pdu, apr_off_t pdu_buflen, apr_bucket_brigade *bb, proxy_conn_rec *p_conn, conn_rec *destination) { apr_size_t pdu_length = pdu_buflen; apr_status_t rv = msrpc_pdu_get_length(pdu, &pdu_length); if (rv != APR_SUCCESS) { ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, "getting PDU length"); return HTTP_INTERNAL_SERVER_ERROR; } apr_bucket *b = apr_bucket_immortal_create(pdu, pdu_length, bb->bucket_alloc); APR_BRIGADE_INSERT_TAIL(bb, b); return proxy_msrpc_pass_brigade(bb->bucket_alloc, r, p_conn, destination, bb, 1); } /* Search thru the input filters and remove the reqtimeout one */ static void proxy_msrpc_remove_reqtimeout(ap_filter_t *next) { ap_filter_t *reqtimeout = NULL; ap_filter_rec_t *filter; filter = ap_get_input_filter_handle("reqtimeout"); if (!filter) { return; } while (next) { if (next->frec == filter) { reqtimeout = next; break; } next = next->next; } if (reqtimeout) { ap_remove_input_filter(reqtimeout); } } static int proxy_msrpc_tunnel(apr_pool_t *p, request_rec *r, proxy_msrpc_request_data_t *rdata, proxy_conn_rec *p_conn) { conn_rec *c = r->connection; apr_socket_t *client_socket = ap_get_conn_socket(c); conn_rec *origin = p_conn->connection; apr_socket_t *origin_socket = ap_get_conn_socket(origin); apr_bucket_brigade *bb_server = rdata->server_bb; apr_bucket_brigade *bb_client = rdata->client_bb; assert(APR_BRIGADE_EMPTY(bb_server)); assert(APR_BRIGADE_EMPTY(bb_client)); /* All bytes received from server should be counted as response body */ r->sent_bodyct = 1; r->bytes_sent = 0; /* setup polling for connection */ ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, r, "%s: setting up poll()", r->method); apr_pollset_t *pollset; apr_status_t rv = apr_pollset_create(&pollset, 2, r->pool, 0); if (rv != APR_SUCCESS) { apr_socket_close(origin_socket); ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, "%s: error apr_pollset_create()", r->method); return HTTP_INTERNAL_SERVER_ERROR; } /* Add client side to the poll */ apr_pollfd_t pollfd; pollfd.p = r->pool; pollfd.desc_type = APR_POLL_SOCKET; pollfd.reqevents = APR_POLLIN; pollfd.desc.s = client_socket; pollfd.client_data = NULL; apr_pollset_add(pollset, &pollfd); /* Add the server side to the poll */ pollfd.desc.s = origin_socket; apr_pollset_add(pollset, &pollfd); /* * Handle Data Transfer * Handle two way transfer of data over the socket (this is a tunnel). */ /* we are now acting as a tunnel - the input/output filter stacks should * not contain any non-connection filters. */ r->output_filters = c->output_filters; r->proto_output_filters = c->output_filters; r->input_filters = c->input_filters; r->proto_input_filters = c->input_filters; /* check whether there are still unprocessed bytes available on the server socket * This is needed because of the switch of the reading mode from * AP_MODE_GETLINE when reading HTTP response headers to AP_MODE_READBYTES * when reading binary data. */ rv = proxy_msrpc_process_data(r, origin, c, bb_client, MSRPC_SERVER_TO_CLIENT); if (rv != APR_SUCCESS) { ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, "%s: error in proxy_msrpc_process_data on server socket", r->method); apr_socket_close(client_socket); c->aborted = 1; c->keepalive = AP_CONN_CLOSE; return OK; } int client_error = 0; /* If this is a RPC_IN_DATA request, we expect the RPC_OUT_DATA request to * switch the Outlook Session to tunnel mode. This means for RPC_IN_DATA * requests we have to check the Outlook Session state, for RPC_OUT_DATA * we did this already before calling this function. */ int check_session_state = (r->method_number == msrpc_methods[MSRPC_M_DATA_IN]) ? 1 : 0; while (1) { /* Infinite loop until error (one side closes the connection) */ apr_int32_t pollcnt; const apr_pollfd_t *signalled; rv = apr_pollset_poll(pollset, -1, &pollcnt, &signalled); if (rv != APR_SUCCESS) { if (APR_STATUS_IS_EINTR(rv)) { continue; } apr_socket_close(origin_socket); ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, "%s: error apr_poll()", r->method); return HTTP_INTERNAL_SERVER_ERROR; } ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, r, "%s: woke from poll(), i=%d", r->method, pollcnt); apr_int32_t pi; for (pi = 0; pi < pollcnt; pi++) { const apr_pollfd_t *cur = &signalled[pi]; if (cur->desc.s == origin_socket) { apr_int16_t pollevent = cur->rtnevents; if (pollevent & APR_POLLIN) { ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, r, "%s: server socket was readable", r->method); if (!bb_client) { bb_client = apr_brigade_create(p, c->bucket_alloc); } rv = proxy_msrpc_process_data(r, origin, c, bb_client, MSRPC_SERVER_TO_CLIENT); } else if ((pollevent & APR_POLLERR) || (pollevent & APR_POLLHUP)) { rv = APR_EPIPE; ap_log_rerror(APLOG_MARK, APLOG_NOTICE, 0, r, "%s: err/hup on server connection", r->method); } if (rv != APR_SUCCESS) client_error = 1; } else if (cur->desc.s == client_socket) { apr_int16_t pollevent = cur->rtnevents; if (pollevent & APR_POLLIN) { ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, r, "%s: client socket was readable", r->method); if (check_session_state) { /* verify that this Outlook Session is in tunnel mode */ rv = proxy_msrpc_check_outlook_session_state(r, rdata, SESSION_TUNNEL); if (rv != APR_SUCCESS) { ap_log_rerror(APLOG_MARK, APLOG_DEBUG, rv, r, "%s: received unexpected (bad session state) data from client, breaking poll loop", r->method); break; } check_session_state = 0; } rv = proxy_msrpc_process_data(r, c, origin, bb_server, MSRPC_CLIENT_TO_SERVER); } } else { rv = APR_EBADF; ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, "%s: unknown socket in pollset", r->method); } } if (rv != APR_SUCCESS) { break; } } ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, r, "%s: finished with poll() - cleaning up", r->method); /* * Clean Up: Close the socket and clean up */ if (client_error) apr_socket_close(client_socket); else ap_lingering_close(origin); c->aborted = 1; c->keepalive = AP_CONN_CLOSE; return OK; } static int proxy_msrpc_read_and_parse_initial_pdu(request_rec *r, proxy_msrpc_request_data_t *rdata) { apr_pool_t *p = r->pool; conn_rec *c = r->connection; if (!rdata->client_bb) { rdata->client_bb = apr_brigade_create(p, c->bucket_alloc); } apr_status_t rv; apr_off_t needed_bytes = MSRPC_PDU_MINLENGTH; apr_off_t offset = 0; apr_bucket_brigade *unparsed_bb = NULL; do { rv = ap_get_brigade(c->input_filters, rdata->client_bb, AP_MODE_READBYTES, APR_BLOCK_READ, needed_bytes); if (rv != APR_SUCCESS) { ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, "%s: failed to read request body - ap_get_brigade", r->method); return HTTP_BAD_REQUEST; } apr_size_t buf_length = sizeof(rdata->initial_pdu) - offset; rv = apr_brigade_flatten(rdata->client_bb, &rdata->initial_pdu[offset], &buf_length); if (rv != APR_SUCCESS) { ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, "%s: failed to read request body - apr_brigade_flatten", r->method); return HTTP_INTERNAL_SERVER_ERROR; } if (buf_length <= 0) { ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, "%s: failed to read request body - apr_brigade_flatten returned no bytes", r->method); return HTTP_INTERNAL_SERVER_ERROR; } ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, r, "%s: got %ld bytes of request body from client", r->method, buf_length); /* drop the flattened data from the bucket brigade and * cleanup client_bb for preparing next ap_get_brigade() */ apr_bucket *b = NULL; rv = apr_brigade_partition(rdata->client_bb, buf_length, &b); if (rv != APR_SUCCESS) { ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, "%s: failed to read request body - apr_brigade_partition", r->method); return HTTP_INTERNAL_SERVER_ERROR; } unparsed_bb = apr_brigade_split(rdata->client_bb, b); rv = apr_brigade_cleanup(rdata->client_bb); if (rv != APR_SUCCESS) { ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, "%s: failed to read request body - apr_brigade_cleanup", r->method); return HTTP_INTERNAL_SERVER_ERROR; } // do byte accounting for loop termination condition offset += buf_length; if (needed_bytes >= buf_length) { needed_bytes -= buf_length; } else { needed_bytes = 0; } rdata->initial_pdu_offset += buf_length; // sanity check if (needed_bytes > 0 && unparsed_bb && !APR_BRIGADE_EMPTY(unparsed_bb)) { ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, "%s: failed to read request body - unparsed_bb is not empty, " "but still %lu bytes needed from request body", r->method, needed_bytes); return HTTP_INTERNAL_SERVER_ERROR; } } while (needed_bytes > 0); apr_size_t buf_length = rdata->initial_pdu_offset; apr_size_t pdu_length = MSRPC_PDU_MINLENGTH; rv = msrpc_pdu_get_length(rdata->initial_pdu, &pdu_length); if (rv != APR_SUCCESS) { ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, "%s: failed to read request body - msrpc_pdu_get_length", r->method); return HTTP_BAD_REQUEST; } if (pdu_length < 10) { ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, "%s: failed to read request body - bad PDU length %lu", r->method, pdu_length); return HTTP_BAD_REQUEST; } if (pdu_length > sizeof(rdata->initial_pdu)) { ap_log_rerror(APLOG_MARK, APLOG_ERR, APR_FROM_OS_ERROR(EMSGSIZE), r, "%s: failed to read request body - insufficient buffer for PDU length %lu", r->method, pdu_length); return HTTP_INTERNAL_SERVER_ERROR; } if (pdu_length > rdata->body_length) { ap_log_rerror(APLOG_MARK, APLOG_ERR, APR_FROM_OS_ERROR(EPROTO), r, "%s: failed to read request body - PDU length %lu is larger than HTTP request body length %ld", r->method, pdu_length, rdata->body_length); return HTTP_INTERNAL_SERVER_ERROR; } ap_log_rerror(APLOG_MARK, APLOG_TRACE1, 0, r, "%s: MSRPC PDU length: %lu (%lu already in buffer)", r->method, pdu_length, buf_length); if (pdu_length > buf_length) { assert(APR_BRIGADE_EMPTY(unparsed_bb)); apr_size_t remaining_length = pdu_length - buf_length; ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, r, "%s: trying to get %lu more bytes from request body", r->method, remaining_length); rv = ap_get_brigade(c->input_filters, rdata->client_bb, AP_MODE_READBYTES, APR_BLOCK_READ, remaining_length); if (rv != APR_SUCCESS) { ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, "%s: failed to read remaining request body - ap_get_brigade", r->method); return HTTP_BAD_REQUEST; } rv = apr_brigade_flatten(rdata->client_bb, rdata->initial_pdu + rdata->initial_pdu_offset, &remaining_length); if (rv != APR_SUCCESS) { ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, "%s: failed to read remaining request body - apr_brigade_flatten", r->method); return HTTP_INTERNAL_SERVER_ERROR; } rdata->initial_pdu_offset += remaining_length; /* drop the flattened date from the bucket brigade and * cleanup client_bb for preparing next ap_get_brigade() */ apr_bucket *b = NULL; rv = apr_brigade_partition(rdata->client_bb, remaining_length, &b); if (rv != APR_SUCCESS) { ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, "%s: failed to read remaining request body - apr_brigade_partition", r->method); return HTTP_INTERNAL_SERVER_ERROR; } unparsed_bb = apr_brigade_split_ex(rdata->client_bb, b, unparsed_bb); rv = apr_brigade_cleanup(rdata->client_bb); if (rv != APR_SUCCESS) { ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, "%s: failed to read remaining request body - apr_brigade_cleanup", r->method); return HTTP_INTERNAL_SERVER_ERROR; } } assert(rdata->initial_pdu_offset >= pdu_length); rdata->initial_pdu_offset = pdu_length; // excess bytes are still in the bucket brigade rdata->client_bb ap_log_rerror(APLOG_MARK, APLOG_TRACE1, 0, r, "%s: MSRPC PDU length: %lu (completely in buffer)", r->method, pdu_length); /* cleanup bucket brigades */ rv = ap_save_brigade(c->input_filters, &rdata->client_bb, &unparsed_bb, r->pool); if (rv != APR_SUCCESS) { ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, "%s: failed save trailing bytes - ap_save_brigade", r->method); return HTTP_INTERNAL_SERVER_ERROR; } apr_brigade_destroy(unparsed_bb); const char *error = NULL; rv = msrpc_pdu_validate(rdata->initial_pdu, &error); if (rv != APR_SUCCESS) { ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, "%s: invalid MSRPC PDU from client, reason: %s", r->method, error); return HTTP_BAD_REQUEST; } /* decode virtual channel cookie */ uuid_t *vc_cookie = NULL; rv = msrpc_rts_get_virtual_channel_cookie(rdata->initial_pdu, &vc_cookie, &error); if (rv != APR_SUCCESS) { ap_log_rerror(APLOG_MARK, APLOG_DEBUG, rv, r, "%s: Failed to register Outlook Session: Cannot decode virtual channel cookie: %s", r->method, error); return HTTP_BAD_REQUEST; } uuid_unparse(*vc_cookie, rdata->outlook_session); ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, "%s: got initial MSRPC pdu (%lu bytes) for Outlook Session %s", r->method, rdata->initial_pdu_offset, rdata->outlook_session); rv = HTTP_INTERNAL_SERVER_ERROR; if (r->method_number == msrpc_methods[MSRPC_M_DATA_IN]) { rv = proxy_msrpc_register_outlook_session(r, rdata); } else if (r->method_number == msrpc_methods[MSRPC_M_DATA_OUT]) { rv = OK; } return rv; } static char *proxy_msrpc_debug_auth_server(request_rec *r, const char *value, char *server_auth) { const char *auth_param = strchrnul(value, ' '); assert(auth_param > value); char *auth_type = apr_pstrndup(r->pool, value, auth_param - value); ap_log_rerror(APLOG_MARK, APLOG_TRACE1, 0, r, "%s: server auth offer: %s", r->method, auth_type); if (server_auth == NULL) { return auth_type; } return apr_pstrcat(r->pool, server_auth, ", ", auth_type, NULL); } static int proxy_msrpc_read_server_response(request_rec *r, proxy_conn_rec *backend, apr_bucket_brigade *bb) { apr_status_t rv; char buf[HUGE_STRING_LEN]; apr_size_t buf_len = HUGE_STRING_LEN; assert(APR_BRIGADE_EMPTY(bb)); rv = ap_get_brigade(backend->connection->input_filters, bb, AP_MODE_GETLINE, APR_BLOCK_READ, buf_len); if (rv != APR_SUCCESS) { ap_log_rerror(APLOG_MARK, APLOG_INFO, rv, r, "%s: failed to read status line from server", r->method); return HTTP_BAD_GATEWAY; } rv = apr_brigade_flatten(bb, buf, &buf_len); if (rv != APR_SUCCESS) { ap_log_rerror(APLOG_MARK, APLOG_INFO, rv, r, "%s: failed to flatten status line from server in buffer", r->method); return HTTP_INTERNAL_SERVER_ERROR; } // protect against overly large strings not fitting into buf if (buf_len >= HUGE_STRING_LEN) { buf_len = HUGE_STRING_LEN - 1; } buf[buf_len] = 0; // remove trailing CRLF char *eol = strpbrk(buf, CRLF); if (eol) { buf_len = eol - buf; } // check server response if (!apr_date_checkmask(buf, "HTTP/1.1 ###*")) { ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, "%s: bad response from server: [%.*s]", r->method, (int)buf_len, buf); return HTTP_BAD_GATEWAY; } int backend_status_code = (buf[9] - '0') * 100 + (buf[10] - '0') * 10 + (buf[11] - '0'); ap_log_rerror(APLOG_MARK, APLOG_TRACE3, 0, r, "%s: Got HTTP response status line (status code: %d)", r->method, backend_status_code); r->status = backend_status_code; r->status_line = apr_pstrndup(r->pool, buf, buf_len); apr_brigade_cleanup(bb); apr_table_clear(r->headers_out); char *server_auth = NULL; int expecting_response_headers = 1; while (expecting_response_headers) { rv = ap_get_brigade(backend->connection->input_filters, bb, AP_MODE_GETLINE, APR_BLOCK_READ, buf_len); if (APR_STATUS_IS_ECONNRESET(rv)) { ap_log_rerror(APLOG_MARK, APLOG_TRACE1, 0, r, "connection reset by peer"); expecting_response_headers = 0; } else if (rv != APR_SUCCESS) { ap_log_rerror(APLOG_MARK, APLOG_INFO, rv, r, "failed to read header line from server"); return HTTP_BAD_GATEWAY; } if (buf_len > 0) { buf_len = HUGE_STRING_LEN; rv = apr_brigade_flatten(bb, buf, &buf_len); if (rv != APR_SUCCESS) { ap_log_rerror(APLOG_MARK, APLOG_INFO, rv, r, "failed to flatten header line from server in buffer"); return HTTP_INTERNAL_SERVER_ERROR; } // protect against overly large strings not fitting into buf if (buf_len >= HUGE_STRING_LEN) { buf_len = HUGE_STRING_LEN - 1; } buf[buf_len] = 0; /* remove CR or LF at end of line */ char *eol = strpbrk(buf, CRLF); if (eol) *eol = 0; ap_log_rerror(APLOG_MARK, APLOG_TRACE3, 0, r, "%s: Got HTTP response header line [%s]", r->method, buf); char *value = strchr(buf, ':'); if (value) { *value = 0; value++; while (apr_isspace(*value)) value++; /* Skip to start of value */ apr_table_add(r->headers_out, buf, value); if (!strcasecmp(buf, "WWW-Authenticate")) { server_auth = proxy_msrpc_debug_auth_server(r, value, server_auth); } } else { expecting_response_headers = 0; } if (buf[0] == 0) { expecting_response_headers = 0; } } apr_brigade_cleanup(bb); } ap_log_rerror(APLOG_MARK, APLOG_TRACE3, 0, r, "%s: Got all HTTP response headers from server", r->method); /* debug output for authentication mechanisms provided by server */ ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, "%s: server auth: %s", r->method, server_auth ? server_auth : "missing"); /* parse some important response headers */ apr_int64_t body_length = 0; const char *header_value = apr_table_get(r->headers_out, "Content-Length"); if (header_value) { body_length = apr_atoi64(header_value); if (errno != 0) { ap_log_rerror(APLOG_MARK, APLOG_ERR, APR_FROM_OS_ERROR(errno), r, "%s: Failed to parse response body Content-Length: '%s'", r->method, header_value); return HTTP_INTERNAL_SERVER_ERROR; } } if (backend_status_code != HTTP_OK) { ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, "%s: server refused MSRPC request for %s: [%s]", r->method, r->unparsed_uri, r->status_line); } /* forward response headers to client */ apr_bucket *e = apr_bucket_flush_create(bb->bucket_alloc); APR_BRIGADE_INSERT_TAIL(bb, e); rv = ap_pass_brigade(r->proto_output_filters, bb); if (rv != APR_SUCCESS) { ap_log_rerror(APLOG_MARK, APLOG_INFO, rv, r, "%s: failed to forward server response headers to client", r->method); return HTTP_INTERNAL_SERVER_ERROR; } ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, r, "%s: Forwarded all HTTP response headers to client", r->method); /* if there is a response body, forward it to the client */ if (body_length > 0) { /* correctly log the request body size in reverseproxy.log */ r->sent_bodyct = 1; r->bytes_sent = body_length; /* simplistic read request body, if present */ ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, r, "%s: HTTP response body size: %ld bytes", r->method, body_length); assert(APR_BRIGADE_EMPTY(bb)); rv = ap_get_brigade(backend->connection->input_filters, bb, AP_MODE_READBYTES, APR_BLOCK_READ, body_length); if (rv != APR_SUCCESS) { ap_log_rerror(APLOG_MARK, APLOG_ERR, rv, r, "%s: Failed to read response body from server", r->method); return HTTP_BAD_GATEWAY; } r->clength = body_length; /* forward response body to the client */ e = apr_bucket_flush_create(bb->bucket_alloc); APR_BRIGADE_INSERT_TAIL(bb, e); rv = ap_pass_brigade(r->connection->output_filters, bb); if (rv != APR_SUCCESS) { ap_log_rerror(APLOG_MARK, APLOG_INFO, rv, r, "failed to forward server response body to client"); return HTTP_INTERNAL_SERVER_ERROR; } } else { ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, r, "%s: no HTTP response body", r->method); } apr_brigade_cleanup(bb); ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, "%s: Forwarded the HTTP response to client", r->method); return backend_status_code; } static apr_status_t proxy_msrpc_disconnect_backend(void *data) { conn_rec *c = (conn_rec *)data; if (c == NULL) return APR_SUCCESS; msrpc_backend_t *d = (msrpc_backend_t *)ap_get_module_config(c->conn_config, &proxy_msrpc_module); if (d == NULL) return APR_SUCCESS; ap_set_module_config(c->conn_config, &proxy_msrpc_module, NULL); d->conn->close = 1; ap_log_error(APLOG_MARK, APLOG_TRACE2, 0, d->server, "%s: Client connection cleanup triggered release of backend connection 0x%pp back to pool", d->proxy_function, d->conn); ap_proxy_release_connection(d->proxy_function, d->conn, d->server); return APR_SUCCESS; } static int proxy_msrpc_connect_backend(request_rec *r, const char *proxy_function, proxy_conn_rec **backendp, proxy_worker *worker, proxy_server_conf *conf, char **locurl, const char *proxyname, apr_port_t proxyport, int is_ssl) { msrpc_backend_t *d = (msrpc_backend_t *)ap_get_module_config(r->connection->conn_config, &proxy_msrpc_module); if (d && d->conn) { ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, r, "%s: re-using already established connection 0x%pp to backend: %s", r->method, d->conn, d->conn->hostname); *backendp = d->conn; return OK; } /* create space for state information */ proxy_conn_rec *backend = NULL; int status = ap_proxy_acquire_connection(proxy_function, &backend, worker, r->server); if (status != OK) return status; *backendp = backend; ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, r, "%s: acquired backend connection 0x%pp", r->method, backend); backend->is_ssl = is_ssl; if (is_ssl) { ap_proxy_ssl_connection_cleanup(backend, r); } /* We want to avoid the backend connection being reused. * As a safe-guard, mark the backend to be closed after use. */ backend->close = 1; /* Step One: Determine Who To Connect To */ char server_portstr[32]; apr_uri_t *uri = apr_palloc(r->pool, sizeof(*uri)); status = ap_proxy_determine_connection(r->pool, r, conf, worker, backend, uri, locurl, proxyname, proxyport, server_portstr, sizeof(server_portstr)); if (status != OK) goto cleanup; /* Step Two: Make the Connection */ if (ap_proxy_connect_backend(proxy_function, backend, worker, r->server)) { ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, "%s: failed to make connection to backend: %s", proxy_function, backend->hostname); status = HTTP_SERVICE_UNAVAILABLE; goto cleanup; } /* Step Three: Create conn_rec */ if (!backend->connection) { status = ap_proxy_connection_create(proxy_function, backend, r->connection, r->server); if (status != OK) goto cleanup; /* We want to avoid the backend connection being reused. * As a safe-guard, mark the backend to be closed after use. */ backend->connection->keepalive = AP_CONN_CLOSE; /* * On SSL connections set a note on the connection what CN is * requested, such that mod_ssl can check if it is requested to do * so. */ if (is_ssl) { proxy_dir_conf *dconf; const char *ssl_hostname; /* * In the case of ProxyPreserveHost on use the hostname of * the request if present otherwise use the one from the * backend request URI. */ dconf = ap_get_module_config(r->per_dir_config, &proxy_module); if ((dconf->preserve_host != 0) && (r->hostname != NULL)) { ssl_hostname = r->hostname; } else { ssl_hostname = uri->hostname; } apr_table_set(backend->connection->notes, "proxy-request-hostname", ssl_hostname); } } /* Step four: Register backend connection with client connection * This ensures that the backend connection is closed too * as soon as the client connection is closed */ msrpc_backend_t *cleanup_data = apr_pcalloc(r->connection->pool, sizeof(msrpc_backend_t)); cleanup_data->proxy_function = apr_pstrdup(r->connection->pool, r->method); cleanup_data->conn = backend; cleanup_data->server = r->server; apr_pool_cleanup_register(r->connection->pool, r->connection, proxy_msrpc_disconnect_backend, apr_pool_cleanup_null); ap_set_module_config(r->connection->conn_config, &proxy_msrpc_module, cleanup_data); return OK; cleanup: if (backend) { backend->close = 1; ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, r, "%s: backend connection 0x%pp setup failed, returning to pool", r->method, backend); ap_proxy_release_connection(proxy_function, backend, r->server); } return status; } /* MSRPC handler */ static int proxy_msrpc_handler(request_rec *r, proxy_worker *worker, proxy_server_conf *conf, char *url, const char *proxyname, apr_port_t proxyport) { int status = HTTP_INTERNAL_SERVER_ERROR; proxy_conn_rec *backend = NULL; apr_bucket_brigade *server_bb = NULL; const char *proxy_function = "HTTP"; int is_ssl = 0; apr_pool_t *p = r->pool; proxy_msrpc_conf_t *msrpc_conf; msrpc_conf = (proxy_msrpc_conf_t *)ap_get_module_config(r->server->module_config, &proxy_msrpc_module); /* is this module enabled? */ if (!proxy_msrpc_configured || (!msrpc_conf) || !msrpc_conf->enabled) { ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, "declining because being disabled in config"); return DECLINED; } /* does the method number match? */ if ((r->method_number != msrpc_methods[MSRPC_M_DATA_IN]) && (r->method_number != msrpc_methods[MSRPC_M_DATA_OUT])) { ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, "declining due to bad method: %s", r->method); return DECLINED; } /* does the user agent match? */ const char *request_user_agent = apr_table_get(r->headers_in, "User-Agent"); if (!request_user_agent) { ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, "declining due to missing User-Agent header"); return DECLINED; } else { int found = 0; if (!msrpc_conf->user_agents) { /* if no user agent explicitly configured, check for the default user agent */ if (!strcasecmp(request_user_agent, "MSRPC")) { found = 1; } } else { /* otherwise iterate through list of configured user agents */ const char **configured_user_agent = (const char **)msrpc_conf->user_agents->elts; int i; for (i = 0; i < msrpc_conf->user_agents->nelts; i++) { if (!strcasecmp(request_user_agent, configured_user_agent[i])) { found = 1; break; } } } if (!found) { ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, "declining due to bad User-Agent: %s", request_user_agent); return DECLINED; } } /* find the scheme */ const char *u = strchr(url, ':'); if (u == NULL || u[1] != '/' || u[2] != '/' || u[3] == '\0') return DECLINED; if ((u - url) > 14) return HTTP_BAD_REQUEST; char *scheme = apr_pstrndup(p, url, u - url); /* scheme is lowercase */ ap_str_tolower(scheme); /* is it for us? */ if (strcmp(scheme, "https") == 0) { if (!ap_proxy_ssl_enable(NULL)) { ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, "HTTPS: declining URL %s (mod_ssl not configured?)", url); return DECLINED; } is_ssl = 1; proxy_function = "HTTPS"; } else if (strcmp(scheme, "http") != 0) { ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, "HTTP: declining URL %s", url); return DECLINED; /* only interested in HTTP via proxy */ } /* do we have a request body? */ const char *request_content_length = apr_table_get(r->headers_in, "Content-Length"); apr_int64_t request_body_length = 0; if (request_content_length) { request_body_length = apr_strtoi64(request_content_length, NULL, 10); if (errno != 0) { ap_log_rerror(APLOG_MARK, APLOG_DEBUG, errno, r, "%s: declining due to unparsable header Content-Length: %s", r->method, request_content_length); return DECLINED; } } ap_log_rerror(APLOG_MARK, APLOG_TRACE1, 0, r, "%s: serving URL %s", r->method, url); /* connect to backend * this re-uses an already established backend connection from an * earlier MSRPC request on the same client connection */ char *locurl = url; status = proxy_msrpc_connect_backend(r, proxy_function, &backend, worker, conf, &locurl, proxyname, proxyport, is_ssl); if (status != OK) { ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, "%s: proxy_msrpc_connect_backend() failed to %pI (%s)", r->method, worker->cp->addr, worker->s->hostname); return status; } server_bb = apr_brigade_create(backend->connection->pool, backend->connection->bucket_alloc); if (request_body_length == 0) { /* forward initial HTTP request without MSRPC payload */ status = proxy_msrpc_send_request_headers(r, locurl, server_bb, backend, backend->connection); if (status != OK) { ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, "%s: proxy_msrpc_send_request_headers() failed to %pI (%s)", r->method, worker->cp->addr, worker->s->hostname); goto cleanup; } ap_log_rerror(APLOG_MARK, APLOG_TRACE1, 0, r, "%s: HTTP request sent to %pI (%s), now waiting for a response", r->method, worker->cp->addr, worker->s->hostname); status = proxy_msrpc_read_server_response(r, backend, server_bb); ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, r, "%s: proxy_msrpc_read_server_response() returned status code %d", r->method, status); if (status != HTTP_UNAUTHORIZED) { ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, "%s: server %pI (%s) did not accept request without PDU (HTTP status code %d)", r->method, worker->cp->addr, worker->s->hostname, status); } ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, r, "%s: proxy_msrpc_handler finished for request without body", r->method); return OK; } /* store request body length for later use */ proxy_msrpc_request_data_t *rdata = ap_get_module_config(r->request_config, &proxy_msrpc_module); /* If we hit this point and rdata is NOT null this means mod_proxy called the * handler for a different backend server and it failed. Because * proxy_msrpc_read_and_parse_initial_pdu consumes the input brigade we * must not call it again. Hence reuse rdata. */ if (rdata == NULL) { rdata = apr_pcalloc(r->pool, sizeof(proxy_msrpc_request_data_t)); rdata->server_bb = server_bb; rdata->body_length = request_body_length; ap_set_module_config(r->request_config, &proxy_msrpc_module, rdata); /* wait for enough data coming in to parse the first MSRPC PDU */ status = proxy_msrpc_read_and_parse_initial_pdu(r, rdata); if (status != OK) { goto cleanup; } /* body length of RPC_OUT_DATA requests needs to match PDU length */ if (r->method_number == msrpc_methods[MSRPC_M_DATA_OUT]) { if (rdata->body_length != rdata->initial_pdu_offset) { ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, "MSRPC PDU length %llu of RPC_OUT_DATA request " "does not match request body length %lld", rdata->initial_pdu_offset, rdata->body_length); return HTTP_BAD_REQUEST; } } /* if we made it here, we succeeded to read the initial PDU from the client */ rdata->initialized = 1; } else { if (!rdata->initialized) { ap_log_rerror(APLOG_MARK, APLOG_NOTICE, 0, r, "MSRPC initialization for this request failed, cannot complete connection set up"); goto cleanup; } /* set the server bucket brigade to the one in use curretly */ rdata->server_bb = server_bb; } apr_uri_t *uri = apr_palloc(p, sizeof(*uri)); int retry = 0; while (retry < 2) { /* Step Four: Send HTTP request headers to the backend server */ status = proxy_msrpc_send_request_headers(r, locurl, rdata->server_bb, backend, backend->connection); if (status != OK) { ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, "%s: proxy_msrpc_send_request_headers() failed to %pI (%s)", r->method, worker->cp->addr, worker->s->hostname); goto cleanup; } ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, "%s: request headers successfully sent to server %pI (%s)", r->method, worker->cp->addr, worker->s->hostname); /* Step Five: Forward the first PDU to the backend server */ status = proxy_msrpc_send_pdu(r, rdata->initial_pdu, rdata->initial_pdu_offset, rdata->server_bb, backend, backend->connection); if (status != OK) { if ((status == HTTP_SERVICE_UNAVAILABLE) && worker->s->ping_timeout_set) { backend->close = 1; ap_log_rerror(APLOG_MARK, APLOG_INFO, status, r, "%s: ap_proxy_msrpc_request() failed to %pI (%s)", r->method, worker->cp->addr, worker->s->hostname); retry++; continue; } ap_log_rerror(APLOG_MARK, APLOG_INFO, 0, r, "%s: proxy_msrpc_send_pdu() failed to %pI (%s)", r->method, worker->cp->addr, worker->s->hostname); break; } ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, "%s: initial PDU successfully sent to server %pI (%s)", r->method, worker->cp->addr, worker->s->hostname); /* synchronize with RPC_DATA_IN request */ // TODO: Replace hard-coded path by something configuration depending char *sync_key = apr_pstrcat(r->pool, "/tmp/msrpc_tunnel_", rdata->outlook_session, ".sync", NULL); if (r->method_number == msrpc_methods[MSRPC_M_DATA_OUT]) { /* Wait for "HTTP/1.1 200 OK" message from server */ // TODO: proxy_msrpc_read_server_response() should NOT send data to the client so we can // return propper HTTP errors when backend server was ok and 'we' failed. See below // for a use case. status = proxy_msrpc_read_server_response(r, backend, rdata->server_bb); ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, r, "%s: proxy_msrpc_read_server_response() returned status code %d", r->method, status); if (status != HTTP_OK) { ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, "%s: server %pI (%s) did not accept initial PDU (HTTP status code %d)", r->method, worker->cp->addr, worker->s->hostname, status); /* mark tunnel mode as failed */ proxy_msrpc_validate_outlook_session(r, rdata, SESSION_BROKEN); int sync_rv = msrpc_sync_ready(sync_key, SESSION_BROKEN); if (sync_rv != 0) { ap_log_rerror(APLOG_MARK, APLOG_ERR, APR_FROM_OS_ERROR(errno), r, "%s: Failed to sync broken Outlook Session %s: %d", r->method, rdata->outlook_session, sync_rv); } /* Do not 'return' here as we have to clean up the broken backend connection with the 'cleanup' label. */ break; } ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, "%s: server %pI (%s) acknowledged the tunnel", r->method, worker->cp->addr, worker->s->hostname); /* Switch to tunnel mode */ proxy_msrpc_validate_outlook_session(r, rdata, SESSION_TUNNEL); int sync_rv = msrpc_sync_ready(sync_key, SESSION_TUNNEL); if (sync_rv == 0) { ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, "%s: Set Outlook Session %s successfully synchronized", r->method, rdata->outlook_session); } else { ap_log_rerror(APLOG_MARK, APLOG_ERR, APR_FROM_OS_ERROR(errno), r, "%s: Failed to sync Outlook Session %s: %d", r->method, rdata->outlook_session, sync_rv); (void)proxy_msrpc_validate_outlook_session(r, rdata, SESSION_BROKEN); /* Do not 'return' here as we have to clean up the broken backend connection with the 'cleanup' label. */ break; } } else if (r->method_number == msrpc_methods[MSRPC_M_DATA_IN]) { int8_t sync_state = msrpc_sync_wait(sync_key, 5000); if (sync_state == SESSION_TUNNEL) { ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, "%s: Set Outlook Session %s successfully synchronized", r->method, rdata->outlook_session); } else { ap_log_rerror(APLOG_MARK, APLOG_ERR, APR_FROM_OS_ERROR(errno), r, "%s: Failed to sync Outlook Session %s: %d", r->method, rdata->outlook_session, sync_state); (void)proxy_msrpc_validate_outlook_session(r, rdata, SESSION_BROKEN); /* Do not 'return' here as we have to clean up the broken backend connection with the 'cleanup' label. */ break; } } /* All the subsequent traffic on this connection is RPC traffic, and there is * no way to downgrade the connection back to HTTP. For this reason there is * no point in keeping the mod_reqtimeout filter in the chain. * Otherwise it would close Outlook connections after the configured timeout */ proxy_msrpc_remove_reqtimeout(r->input_filters); /* Step Six: tunnel traffic from backend to frontend and vice versa */ status = proxy_msrpc_tunnel(p, r, rdata, backend); if (status != OK) { ap_log_rerror(APLOG_MARK, APLOG_INFO, status, r, "%s: proxy_msrpc_tunnel() failed to %pI (%s)", r->method, worker->cp->addr, worker->s->hostname); } /* fall through to cleanup */ break; } /* Step Seven: Clean Up */ cleanup: if (backend) { /* unregister backend from client connection */ ap_set_module_config(r->connection->conn_config, &proxy_msrpc_module, NULL); /* close backend connection */ backend->close = 1; ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, r, "%s: handler working on backend connection 0x%pp finished, returning connection to pool", r->method, backend); ap_proxy_release_connection(proxy_function, backend, r->server); } /* if something went wrong we should also close the client connection, otherwise Outlook will hang idle. */ ap_log_rerror(APLOG_MARK, APLOG_TRACE2, 0, r, "%s: setting keepalive from %d to AP_CONN_CLOSE", r->method, r->connection->keepalive); r->connection->keepalive = AP_CONN_CLOSE; apr_socket_close(ap_get_conn_socket(r->connection)); r->connection->aborted = 1; return status; } static void proxy_msrpc_register_hook(apr_pool_t *p) { static const char *const before_module[] = { "mod_proxy_http.c", NULL}; ap_hook_pre_config(proxy_msrpc_precfg, NULL, NULL, APR_HOOK_MIDDLE); ap_hook_post_config(proxy_msrpc_init, NULL, NULL, APR_HOOK_FIRST); ap_hook_child_init(proxy_msrpc_child_init, NULL, NULL, APR_HOOK_MIDDLE); proxy_hook_scheme_handler(proxy_msrpc_handler, NULL, before_module, APR_HOOK_FIRST); } static const char *set_outlook_anywhere_passthrough(cmd_parms *parms, void *dummy, int flag) { proxy_msrpc_conf_t *conf; conf = (proxy_msrpc_conf_t *)ap_get_module_config(parms->server->module_config, &proxy_msrpc_module); conf->enabled = flag; conf->enabled_set = 1; proxy_msrpc_configured = 1; return NULL; } static const char *set_outlook_anywhere_user_agents(cmd_parms *cmd, void *cfg, const char* arg) { server_rec *s = cmd->server; proxy_msrpc_conf_t *conf = ap_get_module_config(s->module_config, &proxy_msrpc_module); assert(conf != NULL); if (!conf->user_agents) { conf->user_agents = apr_array_make(cmd->pool, 2, sizeof(const char*)); } const char **user_agent = apr_array_push(conf->user_agents); *user_agent = arg; return NULL; } static const char *set_outlook_anywhere_socache(cmd_parms *cmd, void *CFG, const char *arg) { const char *errmsg = ap_check_cmd_context(cmd, GLOBAL_ONLY); if (errmsg) return errmsg; msrpc_session_cache_provider = ap_lookup_provider(AP_SOCACHE_PROVIDER_GROUP, arg, AP_SOCACHE_PROVIDER_VERSION); if (msrpc_session_cache_provider == NULL) { errmsg = apr_psprintf(cmd->pool, "Unknown socache provider '%s'. Maybe you need " "to load the appropriate socache module " "(mod_socache_%s?)", arg, arg); } return errmsg; } static const char *set_outlook_anywhere_cache_expiry(cmd_parms *cmd, void *CFG, const char *arg) { const char *errmsg = ap_check_cmd_context(cmd, GLOBAL_ONLY); if (errmsg) return errmsg; apr_interval_time_t value = apr_atoi64(arg); if (errno != 0) { return apr_psprintf(cmd->pool, "failed to parse '%s'", arg); } if (value < 1000000) { return "value needs to be larger than 1000000"; } msrpc_session_cache_expiry = value; return NULL; } static void *create_msrpc_config(apr_pool_t *p, server_rec *s) { proxy_msrpc_conf_t *c = apr_pcalloc(p, sizeof(proxy_msrpc_conf_t)); return c; } static void *merge_msrpc_config(apr_pool_t *p, void *basev, void *overridesv) { proxy_msrpc_conf_t *new_c = apr_pcalloc(p, sizeof(proxy_msrpc_conf_t)); proxy_msrpc_conf_t *base = (proxy_msrpc_conf_t *)basev; proxy_msrpc_conf_t *overrides = (proxy_msrpc_conf_t *)overridesv; new_c->enabled = (overrides->enabled_set == 0) ? base->enabled : overrides->enabled; if (overrides->user_agents) { new_c->user_agents = apr_array_copy_hdr(p, overrides->user_agents); } return new_c; } static const command_rec proxy_msrpc_cmds[] = { AP_INIT_FLAG("OutlookAnywherePassthrough", set_outlook_anywhere_passthrough, NULL, RSRC_CONF, "Enable passthrough of Outlook Anywhere traffic"), AP_INIT_ITERATE("OutlookAnywhereUserAgents", set_outlook_anywhere_user_agents, NULL, RSRC_CONF, "User-Agents that should be treated as Outlook Anywhere"), AP_INIT_TAKE1("OutlookAnywhereSOCache", set_outlook_anywhere_socache, NULL, RSRC_CONF, "SOCache provider for Outlook Anywhere"), AP_INIT_TAKE1("OutlookAnywhereSOCacheExpire", set_outlook_anywhere_cache_expiry, NULL, RSRC_CONF, "Expiry for Outlook Anywhere session cache"), {NULL} }; module AP_MODULE_DECLARE_DATA proxy_msrpc_module = { STANDARD20_MODULE_STUFF, NULL, /* create per-directory config structure */ NULL, /* merge per-directory config structures */ create_msrpc_config, /* create per-server config structure */ merge_msrpc_config, /* merge per-server config structures */ proxy_msrpc_cmds, /* command apr_table_t */ proxy_msrpc_register_hook /* register hooks */ }; mod_proxy_msrpc-mod_proxy_msrpc-0.6/src/msrpc_pdu_parser.c000066400000000000000000000260571237436577000243600ustar00rootroot00000000000000/************************************************************************** * Copyright (C) 2013 Astaro GmbH & Co. KG -- a Sophos company * Astaro GmbH & Co. KG licenses this file to You under the Apache License, * Version 2.0 (the "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * * Author: Micha Lenk -- 2013-03-05 * ***************************************************************************/ #include "msrpc_pdu_parser.h" #include "msrpc_pdu_private.h" #include #include #include #include #include #ifdef DEBUG_MSRPC_PDU_PARSER #include #endif static const char const *msrpc_pdu_name[] = { "RPC REQUEST", "RPC PING", "RPC RESPONSE", "RPC FAULT", "RPC WORKING", "RPC NOCALL", "RPC REJECT", "RPC ACK", "RPC CL CANCEL", "RPC FACK", "RPC CANCEL ACK", "RPC BIND", "RPC BIND ACK", "RPC BIND NAK", "RPC ALTER CONTEXT", "RPC ALTER CONTEXT RESP", NULL, "RPC SHUTDOWN", "RPC CO CANCEL", "RPC ORPHANED", "RPC RTS", NULL, }; static const char const *msrpc_rts_pdu_command_name[] = { "ReceiveWindowSize", "FlowControlAck", "ConnectionTimeOut", "Cookie", "ChannelLifetime", "ClientKeepalive", "Version", "Empty", "Padding", "NegativeANCE", "ANCE", "ClientAddress", "AssociationGroupID", "Destination", "PingTrafficSentNotify", NULL, }; #define MSRPC_PDU_IS_LITTLE_ENDIAN (pdu->data_representation == MSRPC_PDU_DATA_REPRESENTATION_LITTLE_ENDIAN) apr_status_t msrpc_pdu_get_length(const char *buf, apr_size_t *length) { msrpc_pdu_t *pdu = (msrpc_pdu_t *)buf; assert(length != NULL); if (*length < offsetof(msrpc_pdu_t, auth_length)) { return APR_INCOMPLETE; } #ifdef DEBUG_MSRPC_PDU_PARSER printf("data representation: 0x%08x\n", (uint32_t)pdu->data_representation); #endif *length = MSRPC_PDU_IS_LITTLE_ENDIAN ? pdu->frag_length : swap_bytes_uint16_t(pdu->frag_length); return APR_SUCCESS; } apr_status_t msrpc_pdu_validate(const char *buf, const char **error) { msrpc_pdu_t *pdu = (msrpc_pdu_t *)buf; apr_size_t length = offsetof(msrpc_pdu_t, auth_length); apr_status_t rv = msrpc_pdu_get_length(buf, &length); if (rv != APR_SUCCESS) { if (error) *error = "bad length"; return rv; } if (length < offsetof(msrpc_pdu_t, auth_length)) { if (error) *error = "incomplete PDU"; return APR_INCOMPLETE; } if (pdu->version != 5) { if (error) *error = "PDU version"; return APR_FROM_OS_ERROR(EBADMSG); } if (pdu->version_minor != 0) { if (error) *error = "PDU minor version"; return APR_FROM_OS_ERROR(EBADMSG); } if (pdu->type > 20) { if (error) *error = "PDU type"; return APR_FROM_OS_ERROR(EBADMSG); } if ((pdu->data_representation != MSRPC_PDU_DATA_REPRESENTATION_LITTLE_ENDIAN) && (pdu->data_representation != MSRPC_PDU_DATA_REPRESENTATION_BIG_ENDIAN)) { if (error) *error = "data representation"; return APR_FROM_OS_ERROR(EBADMSG); } uint16_t frag_length = MSRPC_PDU_IS_LITTLE_ENDIAN ? pdu->frag_length : swap_bytes_uint16_t(pdu->frag_length); if (frag_length % 4 != 0) { if (error) *error = "unaligned length"; return APR_FROM_OS_ERROR(EBADMSG); } return APR_SUCCESS; } apr_status_t msrpc_pdu_get_rts_pdu_count(const char *buf, uint16_t *count) { assert(buf != NULL); assert(count != NULL); msrpc_pdu_t *pdu = (msrpc_pdu_t *)buf; if (pdu->type != MSRPC_PDU_RTS) { return APR_FROM_OS_ERROR(EINVAL); } *count = MSRPC_PDU_IS_LITTLE_ENDIAN ? pdu->rts_pdu_count : swap_bytes_uint16_t(pdu->rts_pdu_count); return APR_SUCCESS; } unsigned int msrpc_rts_pdu_len(const msrpc_rts_pdu_t *pdu, uint32_t data_representation) { apr_size_t size = 0; uint32_t conformance_count; uint32_t addrtype; uint32_t command; assert(pdu != NULL); command = (data_representation == MSRPC_PDU_DATA_REPRESENTATION_LITTLE_ENDIAN) ? pdu->command : swap_bytes_uint32_t(pdu->command); #ifdef DEBUG_MSRPC_PDU_PARSER printf("msrpc_rts_pdu_len: data representation: 0x%08x, command: 0x%08x\n", data_representation, command); #endif switch (command) { case RTS_CMD_RECEIVE_WINDOW_SIZE: case RTS_CMD_CONNECTION_TIMEOUT: case RTS_CMD_CHANNEL_LIFETIME: case RTS_CMD_CLIENT_KEEPALIVE: case RTS_CMD_VERSION: case RTS_CMD_DESTINATION: case RTS_CMD_PING_TRAFFIC_SENT_NOTIFY: size = sizeof(pdu->command) + sizeof(uint32_t); break; case RTS_CMD_FLOW_CONTROL_ACK: size = sizeof(pdu->command) + sizeof(uint32_t) // bytes received + sizeof(uint32_t) // available window + sizeof(uuid_t); // channel cookie break; case RTS_CMD_COOKIE: case RTS_CMD_ASSOCIATION_GROUPID: size = sizeof(pdu->command) + sizeof(uuid_t); break; case RTS_CMD_EMPTY: case RTS_CMD_NEGATIVE_ANCE: case RTS_CMD_ANCE: size = sizeof(pdu->command); break; case RTS_CMD_PADDING: // see http://msdn.microsoft.com/en-us/library/cc244015.aspx if (data_representation == MSRPC_PDU_DATA_REPRESENTATION_LITTLE_ENDIAN) { conformance_count = pdu->u32[0]; } else { conformance_count = swap_bytes_uint32_t(pdu->u32[0]); } size = sizeof(pdu->command) + sizeof(conformance_count) + conformance_count; break; case RTS_CMD_CLIENT_ADDRESS: // see http://msdn.microsoft.com/en-us/library/cc244004.aspx // and http://msdn.microsoft.com/en-us/library/cc243993.aspx if (data_representation == MSRPC_PDU_DATA_REPRESENTATION_LITTLE_ENDIAN) { addrtype = pdu->u32[0]; } else { addrtype = swap_bytes_uint32_t(pdu->u32[0]); } size = sizeof(pdu->command) + sizeof(addrtype); switch (addrtype) { case RTS_IPV4: size += sizeof(struct in_addr); break; case RTS_IPV6: size += sizeof(struct in6_addr); break; default: return 0; } size += 12; // padding break; default: return 0; } return size; } apr_status_t msrpc_pdu_get_rts_pdu(const char *buf, unsigned int offset, msrpc_rts_pdu_t **rts_pdu, unsigned int *len) { assert(buf != NULL); assert(rts_pdu != NULL); msrpc_pdu_t *pdu = (msrpc_pdu_t *)buf; uint16_t frag_length = MSRPC_PDU_IS_LITTLE_ENDIAN ? pdu->frag_length : swap_bytes_uint16_t(pdu->frag_length); if (pdu->type != MSRPC_PDU_RTS) { #ifdef DEBUG_MSRPC_PDU_PARSER printf("No RTS PDU\n"); #endif return APR_FROM_OS_ERROR(EINVAL); } if (offsetof(msrpc_pdu_t, rts_pdu_buf) + offset >= frag_length) { #ifdef DEBUG_MSRPC_PDU_PARSER printf("Frag length shorter than offset\n"); #endif return APR_FROM_OS_ERROR(EINVAL); } unsigned int pdusize = msrpc_rts_pdu_len((msrpc_rts_pdu_t *)(pdu->rts_pdu_buf + offset), pdu->data_representation); if (pdusize == 0) { #ifdef DEBUG_MSRPC_PDU_PARSER printf("failed to parse RTS PDU\n"); #endif return APR_FROM_OS_ERROR(EBADMSG); } if (offsetof(msrpc_pdu_t, rts_pdu_buf) + offset + pdusize > frag_length) { #ifdef DEBUG_MSRPC_PDU_PARSER printf("RTS PDU length doesn't fit into frag length at the given offset\n"); #endif return APR_FROM_OS_ERROR(EBADMSG); } *len = pdusize; *rts_pdu = (msrpc_rts_pdu_t *)(pdu->rts_pdu_buf + offset); return APR_SUCCESS; } const char *msrpc_pdu_get_name(const char *buf) { assert(buf); msrpc_pdu_t *pdu = (msrpc_pdu_t *)buf; if (pdu->type <= MSRPC_PDU_RTS) { return msrpc_pdu_name[pdu->type]; } return NULL; } const char *msrpc_rts_pdu_get_command_name(msrpc_rts_pdu_t *pdu, uint32_t data_representation) { uint32_t command; assert(pdu); command = (data_representation == MSRPC_PDU_DATA_REPRESENTATION_LITTLE_ENDIAN) ? pdu->command : swap_bytes_uint32_t(pdu->command); if (command <= RTS_CMD_PING_TRAFFIC_SENT_NOTIFY) { return msrpc_rts_pdu_command_name[command]; } return NULL; } apr_status_t msrpc_rts_get_virtual_channel_cookie(const char *buf, uuid_t **cookie, const char **error) { msrpc_pdu_t *pdu = (msrpc_pdu_t *)buf; uint16_t rts_pdu_count; apr_status_t rv; assert(buf); assert(cookie); if (pdu->type != MSRPC_PDU_RTS) { if (error) *error = "not a RTS pdu"; return APR_FROM_OS_ERROR(EINVAL); } if (pdu->rts_flags != RTS_FLAG_NONE) { if (error) *error = "unexpected flags on RTS pdu"; return APR_FROM_OS_ERROR(EBADMSG); } rv = msrpc_pdu_get_rts_pdu_count(buf, &rts_pdu_count); if (rv != APR_SUCCESS) { if (error) *error = "unexpected error from msrpc_pdu_get_rts_pdu_count()"; return rv; } if ((rts_pdu_count != 4) && (rts_pdu_count != 6)) { if (error) *error = "unexpected RTS command count"; return APR_FROM_OS_ERROR(EBADMSG); } unsigned int offset = 0; msrpc_rts_pdu_t *rtspdu = NULL; unsigned int rtspdulen = 0; rv = msrpc_pdu_get_rts_pdu(buf, offset, &rtspdu, &rtspdulen); if (rv != APR_SUCCESS) { if (error) *error = "failed to get first RTS command"; return rv; } uint32_t command = MSRPC_PDU_IS_LITTLE_ENDIAN ? rtspdu->command : swap_bytes_uint32_t(rtspdu->command); uint32_t rts_version = MSRPC_PDU_IS_LITTLE_ENDIAN ? rtspdu->u32[0] : swap_bytes_uint32_t(rtspdu->u32[0]); if ((command != RTS_CMD_VERSION) && (rts_version != 1)) { if (error) *error = "unexpected first RTS command or RTS version"; return APR_FROM_OS_ERROR(EBADMSG); } offset += rtspdulen; rv = msrpc_pdu_get_rts_pdu(buf, offset, &rtspdu, &rtspdulen); if (rv != APR_SUCCESS) { if (error) *error = "failed to get second RTS command"; return rv; } command = MSRPC_PDU_IS_LITTLE_ENDIAN ? rtspdu->command : swap_bytes_uint32_t(rtspdu->command); if (command != RTS_CMD_COOKIE) { if (error) *error = "unexpected second RTS command"; return APR_FROM_OS_ERROR(EBADMSG); } *cookie = &rtspdu->uuid; return APR_SUCCESS; } mod_proxy_msrpc-mod_proxy_msrpc-0.6/src/msrpc_pdu_parser.h000066400000000000000000000035571237436577000243650ustar00rootroot00000000000000/************************************************************************** * Copyright (C) 2013 Astaro GmbH & Co. KG -- a Sophos company * Astaro GmbH & Co. KG licenses this file to You under the Apache License, * Version 2.0 (the "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * * Author: Micha Lenk -- 2013-03-05 * ***************************************************************************/ #ifndef _MSRPC_PDU_PARSER_H_ #define _MSRPC_PDU_PARSER_H_ #include #include #define MSRPC_PDU_MINLENGTH 10 // we need at least 10 bytes to read the PDU length #define MSRPC_PDU_MAXLENGTH 128 // in practice we haven't seen larger initial PDUs yet typedef struct msrpc_rts_pdu msrpc_rts_pdu_t; apr_status_t msrpc_pdu_get_length(const char *buf, apr_size_t *length); apr_status_t msrpc_pdu_validate(const char *buf, const char **error); apr_status_t msrpc_pdu_get_rts_pdu_count(const char *buf, uint16_t *count); unsigned int msrpc_rts_pdu_len(const msrpc_rts_pdu_t *pdu, uint32_t data_representation); apr_status_t msrpc_pdu_get_rts_pdu(const char *buf, unsigned int offset, msrpc_rts_pdu_t **rts_pdu, unsigned int *len); const char *msrpc_pdu_get_name(const char *buf); const char *msrpc_rts_pdu_get_command_name(msrpc_rts_pdu_t *pdu, uint32_t data_representation); apr_status_t msrpc_rts_get_virtual_channel_cookie(const char *buf, uuid_t **cookie, const char **error); #endif mod_proxy_msrpc-mod_proxy_msrpc-0.6/src/msrpc_pdu_private.h000066400000000000000000000106201237436577000245300ustar00rootroot00000000000000/************************************************************************** * Copyright (C) 2013 Astaro GmbH & Co. KG -- a Sophos company * Astaro GmbH & Co. KG licenses this file to You under the Apache License, * Version 2.0 (the "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * * Author: Micha Lenk -- 2013-03-05 * ***************************************************************************/ #ifndef _MSRPC_PDU_PRIVATE_H_ #define _MSRPC_PDU_PRIVATE_H_ #include #include #define MSRPC_PDU_DATA_REPRESENTATION_BIG_ENDIAN 0x10000000 #define MSRPC_PDU_DATA_REPRESENTATION_LITTLE_ENDIAN 0x00000010 #define swap_bytes_uint16_t(x) ((((x) & 0x00FF) << 8) | (((x) & 0xFF00) >> 8)) #define swap_bytes_uint32_t(x) ((((x) & 0x000000FF) << 24) | (((x) & 0x0000FF00) << 8) | \ (((x) & 0x00FF0000) >> 8) | (((x) & 0xFF000000) >> 24)) /* interpretation of such PDUs, see Microsoft's documentation: * http://msdn.microsoft.com/en-us/library/cc244017.aspx (RTS PDU header) * http://msdn.microsoft.com/en-us/library/cc244018.aspx (RTS PDU body) */ struct msrpc_rts_pdu { uint32_t command; union { uint8_t u8[16]; uint16_t u16[8]; uint32_t u32[4]; uint64_t u64[2]; uuid_t uuid; struct in_addr ipv4_addr; struct in6_addr ipv6_addr; }; }__attribute__ ((packed)); typedef struct _msrpc_pdu { uint8_t version; uint8_t version_minor; uint8_t type; uint8_t flags; uint32_t data_representation; uint16_t frag_length; uint16_t auth_length; uint32_t call_id; union { uint8_t data[112]; struct { uint16_t rts_flags; uint16_t rts_pdu_count; uint8_t rts_pdu_buf[108]; }; }; } __attribute__ ((packed)) msrpc_pdu_t; /* MSRPC PDU types * see also http://pubs.opengroup.org/onlinepubs/9629399/chap12.htm#tagtcjh_28 */ #define MSRPC_PDU_REQUEST 0 #define MSRPC_PDU_PING 1 #define MSRPC_PDU_RESPONSE 2 #define MSRPC_PDU_FAULT 3 #define MSRPC_PDU_WORKING 4 #define MSRPC_PDU_NOCALL 5 #define MSRPC_PDU_REJECT 6 #define MSRPC_PDU_ACK 7 #define MSRPC_PDU_CL_CANCEL 8 #define MSRPC_PDU_FACK 9 #define MSRPC_PDU_CANCEL_ACK 10 #define MSRPC_PDU_BIND 11 #define MSRPC_PDU_BIND_ACK 12 #define MSRPC_PDU_BIND_NAK 13 #define MSRPC_PDU_ALTER_CONTEXT 14 #define MSRPC_PDU_ALTER_CONTEXT_RESP 15 #define MSRPC_PDU_SHUTDOWN 17 #define MSRPC_PDU_CO_CANCEL 18 #define MSRPC_PDU_ORPHANED 19 #define MSRPC_PDU_RTS 20 /* RTS flags */ #define RTS_FLAG_NONE 0x0000 #define RTS_FLAG_PING 0x0001 #define RTS_FLAG_OTHER_CMD 0x0002 #define RTS_FLAG_RECYCLE_CHANNEL 0x0004 #define RTS_FLAG_IN_CHANNEL 0x0008 #define RTS_FLAG_OUT_CHANNEL 0x0010 #define RTS_FLAG_EOF 0x0020 #define RTS_FLAG_ECHO 0x0040 /* RTS client address type */ #define RTS_IPV4 0 #define RTS_IPV6 1 // See http://msdn.microsoft.com/en-us/library/cc243998.aspx #define RTS_CMD_RECEIVE_WINDOW_SIZE 0 #define RTS_CMD_FLOW_CONTROL_ACK 1 #define RTS_CMD_CONNECTION_TIMEOUT 2 #define RTS_CMD_COOKIE 3 #define RTS_CMD_CHANNEL_LIFETIME 4 #define RTS_CMD_CLIENT_KEEPALIVE 5 #define RTS_CMD_VERSION 6 #define RTS_CMD_EMPTY 7 #define RTS_CMD_PADDING 8 #define RTS_CMD_NEGATIVE_ANCE 9 #define RTS_CMD_ANCE 0xA #define RTS_CMD_CLIENT_ADDRESS 0xB #define RTS_CMD_ASSOCIATION_GROUPID 0xC #define RTS_CMD_DESTINATION 0xD #define RTS_CMD_PING_TRAFFIC_SENT_NOTIFY 0xE #endif mod_proxy_msrpc-mod_proxy_msrpc-0.6/src/msrpc_sync.c000066400000000000000000000152021237436577000231560ustar00rootroot00000000000000/************************************************************************** * Copyright (C) 2013 Astaro GmbH & Co. KG -- a Sophos company * Astaro GmbH & Co. KG licenses this file to You under the Apache License, * Version 2.0 (the "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * * Author: Micha Lenk -- 2013-03-05 * ***************************************************************************/ #include "msrpc_sync.h" #include #include #include #include #include #include #include #include #include #include #ifdef DEBUG_MSRPC_FIFO #include #endif #define EVENT_SIZE ( sizeof (struct inotify_event) ) #define EVENT_BUF_LEN ( 100 * ( EVENT_SIZE + 16 ) ) int8_t msrpc_sync_wait(const char *key, int timeout) { int sync_fd; #ifdef O_CLOEXEC sync_fd = open(key, O_RDONLY | O_CLOEXEC); #else sync_fd = open(key, O_RDONLY); #endif if (sync_fd < 0) { if (errno == ENOENT) { // wait until the file is created, or a timeout happens #if HAVE_INOTIFY_INIT1 int inotify_fd = inotify_init1(IN_CLOEXEC); #else int inotify_fd = inotify_init(); #endif if (inotify_fd < 0) { #ifdef DEBUG_MSRPC_FIFO printf("inotify_init1() failed: %m\n"); #endif return -1; } // trim key to directory name char key_dir[PATH_MAX]; strncpy(key_dir, key, PATH_MAX); key_dir[PATH_MAX-1] = 0; // safeguard against overly large key char *slash = strrchr(key_dir, '/'); assert(slash != NULL); *slash = 0; // get pure filename without directory const char *key_without_dir = slash + 1; // wait until the file is created and closed after writing int watch_fd = inotify_add_watch(inotify_fd, key_dir, IN_CLOSE_WRITE); if (watch_fd < 0) { int inotify_errno = errno; close(inotify_fd); errno = inotify_errno; #ifdef DEBUG_MSRPC_FIFO printf("inotify_add_watch() failed: %m\n"); #endif return -1; } fd_set wait_fds; FD_ZERO(&wait_fds); FD_SET(inotify_fd, &wait_fds); struct timeval remaining; remaining.tv_sec = timeout / 1000; remaining.tv_usec = (timeout % 1000) * 1000; int rv; do { rv = select(inotify_fd + 1, &wait_fds, NULL, NULL, &remaining); if (rv < 0) { #ifdef DEBUG_MSRPC_FIFO printf("select() failed: %m\n"); #endif if (errno == EINTR) { continue; } break; } else if (rv == 0) { close(inotify_fd); errno = ETIMEDOUT; return -1; } else if (rv > 0) { char event_buf[EVENT_BUF_LEN]; int bytes = read(inotify_fd, event_buf, EVENT_BUF_LEN); if (bytes < 0) { if (errno == EINTR) { continue; } #ifdef DEBUG_MSRPC_FIFO printf("read on inotify fd failed: %m\n"); #endif rv = -1; break; } int offset = 0; while (offset < bytes) { struct inotify_event *ie = (struct inotify_event *)&event_buf[offset]; if ((ie->wd == watch_fd) && (ie->mask & IN_CLOSE_WRITE)) { #ifdef DEBUG_MSRPC_FIFO printf("Got event for file '%s'\n", ie->name); #endif if (!strcmp(ie->name, key_without_dir)) { #ifdef DEBUG_MSRPC_FIFO printf("Got a match!\n"); #endif sync_fd = open(key, O_RDONLY | O_CLOEXEC); if (sync_fd < 0) { rv = -1; break; } } #ifdef DEBUG_MSRPC_FIFO } else { printf("Got something else\n"); #endif } offset += EVENT_SIZE + ie->len; } } } while ((rv > 0) && (sync_fd < 0)); close(inotify_fd); } else { #ifdef DEBUG_MSRPC_FIFO printf("open for sync_fd failed: %m\n"); #endif return -1; } } #ifdef DEBUG_MSRPC_FIFO printf("Trying to read from sync_fd %d\n", sync_fd); #endif int8_t result; ssize_t read_count = read(sync_fd, &result, sizeof(result)); if (read_count <= 0) { int read_errno = (read_count == 0) ? ENODATA : errno; close(sync_fd); errno = read_errno; #ifdef DEBUG_MSRPC_FIFO printf("read() on sync_fd failed: %m\n"); #endif return -1; } unlink(key); close(sync_fd); errno = 0; return result; } int msrpc_sync_ready(const char *key, int8_t value) { // try to create and open the file int sync_fd = open(key, O_WRONLY | O_CLOEXEC | O_CREAT | O_EXCL, 0600); if (sync_fd < 0) { #ifdef DEBUG_MSRPC_FIFO printf("open() on sync_fd for %s failed: %m\n", key); #endif return -1; } // write the value to the file and close it ssize_t written = write(sync_fd, &value, sizeof(value)); if (written <= 0) { #ifdef DEBUG_MSRPC_FIFO printf("write() on sync_fd for %s failed: %m\n", key); #endif unlink(key); close(sync_fd); return -1; } close(sync_fd); return 0; } mod_proxy_msrpc-mod_proxy_msrpc-0.6/src/msrpc_sync.h000066400000000000000000000041541237436577000231670ustar00rootroot00000000000000/************************************************************************** * Copyright (C) 2013 Astaro GmbH & Co. KG -- a Sophos company * Astaro GmbH & Co. KG licenses this file to You under the Apache License, * Version 2.0 (the "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * * Author: Micha Lenk -- 2013-03-05 * ***************************************************************************/ #ifndef _MSRPC_FIFO_H_ #define _MSRPC_FIFO_H_ #include #include /** * msrpc_sync_wait() waits until its counter part function * msrpc_sync_ready() is called for the same key or until the specified * timeout is reached. In the first case it returns the value that was * used in the call of msrpc_sync_ready() and errno is set to zero. In * the latter case it returns -1 and errno is set to ETIMEDOUT. * * The provided key needs to be a file name of a file created by * msrpc_sync_ready. If the operation succeeds (i.e. no timeout happens) * the file will get unlinked on return. * * The timeout is specified in milli seconds. * * This function can be used to synchronize two processes. */ int8_t msrpc_sync_wait(const char *key, int timeout); /** * msrpc_sync_ready() transports the specified value to the counter part * function msrpc_sync_wait() that was called for the same key (see * above). On success, zero is returned. On error -1 is returned and * errno is set appropriately. * * The provided key will be used to create a file on the file system, so * it needs to be a valid file name. * * This function can be used to synchronize two processes. */ int msrpc_sync_ready(const char *key, int8_t value); #endif mod_proxy_msrpc-mod_proxy_msrpc-0.6/test/000077500000000000000000000000001237436577000210225ustar00rootroot00000000000000mod_proxy_msrpc-mod_proxy_msrpc-0.6/test/Makefile.in000066400000000000000000000024641237436577000230750ustar00rootroot00000000000000APR_CFLAGS=@APR_CFLAGS@ APR_LIBS=@APR_LIBS@ CHECK_CFLAGS=@CHECK_CFLAGS@ CHECK_LIBS=-lpthread @CHECK_LIBS@ UUID_LIBS=@UUIDLIB@ all: check_msrpc_pdu_parser check_msrpc_sync check_msrpc_pdu_parser.o: check_msrpc_pdu_parser.c ../src/msrpc_pdu_parser.h ../src/msrpc_pdu_private.h gcc $(CFLAGS) $(APR_CFLAGS) -I../src -c -o check_msrpc_pdu_parser.o check_msrpc_pdu_parser.c check_msrpc_sync.o: check_msrpc_sync.c ../src/msrpc_sync.h gcc $(CFLAGS) -I../src -c -o check_msrpc_sync.o check_msrpc_sync.c msrpc_pdu_parser.o: ../src/msrpc_pdu_parser.c ../src/msrpc_pdu_parser.h ../src/msrpc_pdu_private.h gcc $(CFLAGS) $(APR_CFLAGS) -I../src -c ../src/msrpc_pdu_parser.c msrpc_sync.o: ../src/msrpc_sync.c ../src/msrpc_sync.h gcc $(CFLAGS) -D_GNU_SOURCE -I../src -c ../src/msrpc_sync.c check_msrpc_pdu_parser: check_msrpc_pdu_parser.o msrpc_pdu_parser.o gcc $(CFLAGS) $(APR_CFLAGS) -o check_msrpc_pdu_parser check_msrpc_pdu_parser.o msrpc_pdu_parser.o $(CHECK_LIBS) $(APR_LIBS) $(UUID_LIBS) check_msrpc_sync: check_msrpc_sync.o msrpc_sync.o gcc $(CFLAGS) -o check_msrpc_sync check_msrpc_sync.o msrpc_sync.o $(CHECK_LIBS) clean: rm -f check_msrpc_pdu_parser check_msrpc_sync *.o check.log Makefile check: check_msrpc_pdu_parser check_msrpc_sync ./check_msrpc_pdu_parser ./check_msrpc_sync .PHONY: all check clean mod_proxy_msrpc-mod_proxy_msrpc-0.6/test/check_msrpc_pdu_parser.c000066400000000000000000000475311237436577000257050ustar00rootroot00000000000000/************************************************************************** * Copyright (C) 2013 Astaro GmbH & Co. KG -- a Sophos company * Astaro GmbH & Co. KG licenses this file to You under the Apache License, * Version 2.0 (the "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * * Author: Micha Lenk -- 2013-03-05 * ***************************************************************************/ #include #include #include #include #include "msrpc_pdu_parser.h" #include "msrpc_pdu_private.h" #include // TODO: REMOVE printf() and this line #include #define TESTDATA_INITIAL_PDU_IN "\x05\x00\x14\x03\x10\x00\x00\x00" \ "\x68\x00\x00\x00\x00\x00\x00\x00\x00\x00\x06\x00\x06\x00\x00\x00" \ "\x01\x00\x00\x00\x03\x00\x00\x00\x97\x15\xf8\x97\xf6\x6d\x23\x4e" \ "\x78\xca\x17\x6f\xdd\xe1\xbf\x2d\x03\x00\x00\x00\x25\x0d\x9e\x0d" \ "\xce\x53\xca\x78\xee\x0c\xa1\x03\xb3\x54\xa1\x07\x04\x00\x00\x00" \ "\x00\x00\x00\x40\x05\x00\x00\x00\xe0\x93\x04\x00\x0c\x00\x00\x00" \ "\x1b\x38\x50\x77\x23\xb8\x42\x40\x91\xfe\x8d\x4b\x9e\xe8\xed\x1a" #define TESTDATA_INITIAL_PDU_OUT "\x05\x00\x14\x03\x10\x00\x00\x00" \ "\x4c\x00\x00\x00\x00\x00\x00\x00\x00\x00\x04\x00\x06\x00\x00\x00" \ "\x01\x00\x00\x00\x03\x00\x00\x00\x97\x15\xf8\x97\xf6\x6d\x23\x4e" \ "\x78\xca\x17\x6f\xdd\xe1\xbf\x2d\x03\x00\x00\x00\x86\x39\xb6\xd2" \ "\xc9\x62\xa2\x77\xe4\x7a\x10\xf3\x57\x2d\xe7\xc2\x00\x00\x00\x00" \ "\x00\x00\x01\x00" typedef struct { const char *data; apr_size_t data_length; apr_status_t expected_result; apr_size_t expected_length; } test_msrpc_pdu_length_t; const static test_msrpc_pdu_length_t testset_msrpc_pdu_length[] = { { "", 0, APR_INCOMPLETE, 0 }, { "\x00\x01\x02\x03\x04\x05\x06\x07\x08", 9, APR_INCOMPLETE, 9 }, { "\x05\x00\x14\x03\x10\x00\x00\x00\x2c\x00", 10, APR_SUCCESS, 44 }, { TESTDATA_INITIAL_PDU_IN, 104, APR_SUCCESS, 104 }, { TESTDATA_INITIAL_PDU_OUT, 76, APR_SUCCESS, 76 }, }; const static size_t testset_msrpc_pdu_length_size = sizeof(testset_msrpc_pdu_length) / sizeof(test_msrpc_pdu_length_t); typedef struct { const char *data; const char *expected_error; apr_status_t expected_result; } test_msrpc_pdu_validate_t; const static test_msrpc_pdu_validate_t testset_msrpc_pdu_validate[] = { { "\x05\x00\x14\x03\x10\x00\x00\x00\x04\x00\x00\x00", "incomplete PDU", APR_INCOMPLETE }, { "\x06\x00\x14\x03\x10\x00\x00\x00\x0c\x00\x00\x00", "PDU version", APR_FROM_OS_ERROR(EBADMSG) }, { "\x05\x01\x14\x03\x10\x00\x00\x00\x0c\x00\x00\x00", "PDU minor version", APR_FROM_OS_ERROR(EBADMSG) }, { "\x05\x00\x15\x03\x10\x00\x00\x00\x0c\x00\x00\x00", "PDU type", APR_FROM_OS_ERROR(EBADMSG) }, { "\x05\x00\x14\x03\x01\x11\x11\x11\x0c\x00\x00\x00", "data representation", APR_FROM_OS_ERROR(EBADMSG) }, { "\x05\x00\x14\x03\x10\x00\x00\x00\x0d\x00\x00\x00\x00", "unaligned length", APR_FROM_OS_ERROR(EBADMSG) }, { "\x05\x00\x14\x03\x10\x00\x00\x00\x0c\x00\x00\x00", NULL, APR_SUCCESS }, // Caution: next is a synthetic test case, big endian data representation has not been seen in the wild: { "\x05\x00\x14\x03\x00\x00\x00\x10\x00\x0c\x00\x00", NULL, APR_SUCCESS }, { TESTDATA_INITIAL_PDU_IN, NULL, APR_SUCCESS }, { TESTDATA_INITIAL_PDU_OUT, NULL, APR_SUCCESS }, }; const static size_t testset_msrpc_pdu_validate_size = sizeof(testset_msrpc_pdu_validate) / sizeof(test_msrpc_pdu_validate_t); typedef struct { const char *data; apr_status_t expected_result; uint16_t expected_count; } test_msrpc_pdu_get_rts_pdu_count_t; const static test_msrpc_pdu_get_rts_pdu_count_t testset_msrpc_pdu_get_rts_pdu_count[] = { { TESTDATA_INITIAL_PDU_IN, APR_SUCCESS, 6 }, { TESTDATA_INITIAL_PDU_OUT, APR_SUCCESS, 4 }, { "\x05\x00\x13\x03\x10\x00\x00\x00\x0c\x00\x00\x00", APR_FROM_OS_ERROR(EINVAL), (uint16_t)-1 }, }; const static size_t testset_msrpc_pdu_get_rts_pdu_count_size = sizeof(testset_msrpc_pdu_get_rts_pdu_count) / sizeof(test_msrpc_pdu_get_rts_pdu_count_t); typedef struct { const char data_representation[4]; const char *data; unsigned int expected_size; } test_msrpc_rts_pdu_len_t; const static test_msrpc_rts_pdu_len_t testset_msrpc_rts_pdu_len[] = { { "\x10\x00\x00\x00", "\x00\x00\x00\x00", 8 }, { "\x10\x00\x00\x00", "\x01\x00\x00\x00", 28 }, { "\x10\x00\x00\x00", "\x02\x00\x00\x00", 8 }, { "\x10\x00\x00\x00", "\x03\x00\x00\x00", 20 }, { "\x10\x00\x00\x00", "\x04\x00\x00\x00", 8 }, { "\x10\x00\x00\x00", "\x05\x00\x00\x00", 8 }, { "\x10\x00\x00\x00", "\x06\x00\x00\x00", 8 }, { "\x10\x00\x00\x00", "\x07\x00\x00\x00", 4 }, { "\x10\x00\x00\x00", "\x08\x00\x00\x00\x00\x00\x00\x00", 8 }, { "\x10\x00\x00\x00", "\x08\x00\x00\x00\x01\x00\x00\x00", 9 }, // checking whether all the bits from padding count are evaluated correctly: { "\x10\x00\x00\x00", "\x08\x00\x00\x00\x01\x02\x03\x04", 8 + 0x04030201 }, { "\x10\x00\x00\x00", "\x09\x00\x00\x00", 4 }, { "\x10\x00\x00\x00", "\x0a\x00\x00\x00", 4 }, { "\x10\x00\x00\x00", "\x0b\x00\x00\x00\x00\x00\x00\x00", 8 + 4 + 12 }, // IPv4 address { "\x10\x00\x00\x00", "\x0b\x00\x00\x00\x01\x00\x00\x00", 8 + 16 + 12 }, // IPv6 address { "\x10\x00\x00\x00", "\x0b\x00\x00\x00\x03\x00\x00\x00", 0 }, // neither IPv4 nor IPv6 address { "\x10\x00\x00\x00", "\x0c\x00\x00\x00", 20 }, { "\x10\x00\x00\x00", "\x0d\x00\x00\x00", 8 }, { "\x10\x00\x00\x00", "\x0e\x00\x00\x00", 8 }, { "\x10\x00\x00\x00", "\x0f\x00\x00\x00", 0 }, }; const static size_t testset_msrpc_rts_pdu_len_size = sizeof(testset_msrpc_rts_pdu_len) / sizeof(test_msrpc_rts_pdu_len_t); typedef struct { const char *data; unsigned int offset; int output_buffer_length; apr_status_t expected_rv; const char *expected_data; unsigned int expected_length; } test_msrpc_pdu_get_rts_pdu_t; const static test_msrpc_pdu_get_rts_pdu_t testset_msrpc_pdu_get_rts_pdu[] = { { TESTDATA_INITIAL_PDU_IN, 0, -1, APR_SUCCESS, "\x06\x00\x00\x00\x01\x00\x00\x00", 8 }, { TESTDATA_INITIAL_PDU_IN, 8, -1, APR_SUCCESS, "\x03\x00\x00\x00\x97\x15\xF8\x97\xF6\x6D\x23\x4E\x78\xCA\x17\x6F\xDD\xE1\xBF\x2D", 20 }, { TESTDATA_INITIAL_PDU_IN, 28, -1, APR_SUCCESS, "\x03\x00\x00\x00\x25\x0D\x9E\x0D\xCE\x53\xCA\x78\xEE\x0C\xA1\x03\xB3\x54\xA1\x07", 20 }, { TESTDATA_INITIAL_PDU_IN, 48, -1, APR_SUCCESS, "\x04\x00\x00\x00\x00\x00\x00\x40", 8 }, { TESTDATA_INITIAL_PDU_IN, 56, -1, APR_SUCCESS, "\x05\x00\x00\x00\xE0\x93\x04\x00", 8 }, { TESTDATA_INITIAL_PDU_IN, 64, -1, APR_SUCCESS, "\x0C\x00\x00\x00\x1B\x38\x50\x77\x23\xB8\x42\x40\x91\xFE\x8D\x4B\x9E\xE8\xED\x1A", 20 }, { TESTDATA_INITIAL_PDU_OUT, 0, -1, APR_SUCCESS, "\x06\x00\x00\x00\x01\x00\x00\x00", 8 }, { TESTDATA_INITIAL_PDU_OUT, 8, -1, APR_SUCCESS, "\x03\x00\x00\x00\x97\x15\xF8\x97\xF6\x6D\x23\x4E\x78\xCA\x17\x6F\xDD\xE1\xBF\x2D", 20 }, { TESTDATA_INITIAL_PDU_OUT, 28, -1, APR_SUCCESS, "\x03\x00\x00\x00\x86\x39\xB6\xD2\xC9\x62\xA2\x77\xE4\x7A\x10\xF3\x57\x2D\xE7\xC2", 20 }, { TESTDATA_INITIAL_PDU_OUT, 48, -1, APR_SUCCESS, "\x00\x00\x00\x00\x00\x00\x01\x00", 8 }, { "\x05\x00\x13\x03\x10\x00\x00\x00\x2c\x00", 0, -1, APR_FROM_OS_ERROR(EINVAL), NULL, 0 }, { "\x05\x00\x14\x03\x10\x00\x00\x00\x14\x00", 0, -1, APR_FROM_OS_ERROR(EINVAL), NULL, 0 }, { "\x05\x00\x14\x03\x10\x00\x00\x00\x1C\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00" "\xFF\x00\x00\x00\x01\x00\x00\x00", 0, -1, APR_FROM_OS_ERROR(EBADMSG), NULL, 0 }, { "\x05\x00\x14\x03\x10\x00\x00\x00\x1B\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00" "\x06\x00\x00\x00\x01\x00\x00\x00", 0, -1, APR_FROM_OS_ERROR(EBADMSG), NULL, 0 }, { "\x05\x00\x14\x03\x10\x00\x00\x00\x1C\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00" "\x06\x00\x00\x00\x01\x00\x00\x00", 0, 8, APR_SUCCESS, "\x06\x00\x00\x00\x01\x00\x00\x00", 8 }, }; const static size_t testset_msrpc_pdu_get_rts_pdu_size = sizeof(testset_msrpc_pdu_get_rts_pdu) / sizeof(test_msrpc_pdu_get_rts_pdu_t); typedef struct { const char *data; const char *name; } test_msrpc_pdu_get_name_t; const static test_msrpc_pdu_get_name_t testset_msrpc_pdu_get_name[] = { { TESTDATA_INITIAL_PDU_IN, "RPC RTS" }, { TESTDATA_INITIAL_PDU_OUT, "RPC RTS" }, }; const static size_t testset_msrpc_pdu_get_name_size = sizeof(testset_msrpc_pdu_get_name) / sizeof(test_msrpc_pdu_get_name_t); typedef struct { const char *data; unsigned int rts_command_count; const char *name[7]; } test_msrpc_rts_pdu_get_command_name_t; const static test_msrpc_rts_pdu_get_command_name_t testset_msrpc_rts_pdu_get_command_name[] = { { TESTDATA_INITIAL_PDU_IN, 6, { "Version", "Cookie", "Cookie", "ChannelLifetime", "ClientKeepalive", "AssociationGroupID", NULL } }, { TESTDATA_INITIAL_PDU_OUT, 4, { "Version", "Cookie", "Cookie", "ReceiveWindowSize", NULL, NULL, NULL } }, }; const static size_t testset_msrpc_rts_pdu_get_command_name_size = sizeof(testset_msrpc_rts_pdu_get_command_name) / sizeof(test_msrpc_rts_pdu_get_command_name_t); typedef struct { const char *data; uuid_t cookie; } test_msrpc_rts_get_virtual_channel_cookie_t; const static test_msrpc_rts_get_virtual_channel_cookie_t testset_msrpc_rts_get_virtual_channel_cookie[] = { { TESTDATA_INITIAL_PDU_IN, { 0x97, 0x15, 0xf8, 0x97, 0xf6, 0x6d, 0x23, 0x4e, 0x78, 0xca, 0x17, 0x6f, 0xdd, 0xe1, 0xbf, 0x2d } }, { TESTDATA_INITIAL_PDU_IN, { 0x97, 0x15, 0xf8, 0x97, 0xf6, 0x6d, 0x23, 0x4e, 0x78, 0xca, 0x17, 0x6f, 0xdd, 0xe1, 0xbf, 0x2d } }, }; const static size_t testset_msrpc_rts_get_virtual_channel_cookie_size = sizeof(testset_msrpc_rts_get_virtual_channel_cookie) / sizeof(test_msrpc_rts_get_virtual_channel_cookie_t); START_TEST (test_msrpc_pdu_get_length) { char data[10]; memcpy(data, testset_msrpc_pdu_length[_i].data, sizeof(data)); apr_size_t data_length = testset_msrpc_pdu_length[_i].data_length; apr_status_t rv = msrpc_pdu_get_length(data, &data_length); fail_unless(rv == testset_msrpc_pdu_length[_i].expected_result, " for iteration %u\n" "EXPECTED rv: %u, BUT GOT rv: %u", _i, testset_msrpc_pdu_length[_i].expected_result, rv); fail_unless(data_length == testset_msrpc_pdu_length[_i].expected_length, " for iteration %u\n" "EXPECTED length: %lu, BUT GOT length: %lu", _i, testset_msrpc_pdu_length[_i].expected_length, data_length); } END_TEST START_TEST (test_msrpc_pdu_validate) { const char *error = NULL; apr_status_t expected_result = testset_msrpc_pdu_validate[_i].expected_result; const char *expected_error = testset_msrpc_pdu_validate[_i].expected_error; apr_status_t rv = msrpc_pdu_validate(testset_msrpc_pdu_validate[_i].data, &error); fail_unless(rv == expected_result, " for iteration %u\n" "EXPECTED rv: %u, BUT GOT rv: %u (%s)", _i, expected_result, rv, error); if (expected_error == NULL) { fail_unless(error == NULL, " for iteration %u\n" "EXPECTED error as a NULL pointer, BUT GOT error: %s", _i, error); } else { fail_unless(error != NULL, " for iteration %u\n" "EXPECTED error: %s, BUT GOT a NULL pointer", _i, expected_error); if (error) { fail_unless(!strcmp(error, expected_error), " for iteration %u\n" "EXPECTED error: %s, BUT GOT error: %s", _i, expected_error, error); } } } END_TEST START_TEST (test_msrpc_pdu_get_rts_pdu_count) { const char *data = testset_msrpc_pdu_get_rts_pdu_count[_i].data; apr_status_t expected_rv = testset_msrpc_pdu_get_rts_pdu_count[_i].expected_result; uint16_t expected_count = testset_msrpc_pdu_get_rts_pdu_count[_i].expected_count; uint16_t count = (uint16_t)-1; apr_status_t rv = msrpc_pdu_get_rts_pdu_count(data, &count); fail_unless(rv == expected_rv, " for iteration %u\n" "EXPECTED rv: %u, BUT GOT rv: %u", _i, expected_rv, rv); fail_unless(count == expected_count, " for iteration %u\n" "EXPECTED count: %u, BUT GOT count: %u", _i, expected_count, count); } END_TEST START_TEST (test_msrpc_rts_pdu_len) { uint32_t data_representation = *((uint32_t *)(testset_msrpc_rts_pdu_len[_i].data_representation)); const msrpc_rts_pdu_t *pdu = (const msrpc_rts_pdu_t *)testset_msrpc_rts_pdu_len[_i].data; apr_size_t expected_size = testset_msrpc_rts_pdu_len[_i].expected_size; apr_size_t size = msrpc_rts_pdu_len(pdu, data_representation); fail_unless(size == expected_size, " for iteration %u\n" "EXPECTED size: %lu, BUT GOT size: %lu", _i, expected_size, size); } END_TEST START_TEST (test_msrpc_pdu_get_rts_pdu) { const test_msrpc_pdu_get_rts_pdu_t *testset = &testset_msrpc_pdu_get_rts_pdu[_i]; msrpc_rts_pdu_t *rtspdu = NULL; unsigned int rtspdulen = 0; apr_status_t rv = msrpc_pdu_get_rts_pdu(testset->data, testset->offset, &rtspdu, &rtspdulen); fail_unless(testset->expected_rv == rv, " for iteration %u\n" "EXPECTED rv: %u, BUT GOT rv: %u", _i, testset->expected_rv, rv); if (rv == APR_SUCCESS) { fail_unless(testset->expected_length == rtspdulen, " for iteration %u\n" "EXPECTED pdu length: %u, BUT GOT pdu length: %u", _i, testset->expected_length, rtspdulen); if (memcmp(testset->expected_data, rtspdu, rtspdulen) != 0) { unsigned char *received_data = (unsigned char *)rtspdu; char expected_str[4096]; char returned_str[4096]; int i; for (i=0; i < rtspdulen; i++) { snprintf(&expected_str[i*3], sizeof(expected_str)-1-i*3, "%02hhX ", (unsigned char)testset->expected_data[i]); snprintf(&returned_str[i*3], sizeof(returned_str)-1-i*3, "%02hhX ", received_data[i]); } expected_str[rtspdulen*3-1] = 0; returned_str[rtspdulen*3-1] = 0; fail(" for iteration %u\n" "EXPECTED pdu [%s] DOES NOT MATCH\nreturned pdu [%s]", _i, expected_str, returned_str); } } } END_TEST START_TEST (test_msrpc_pdu_get_name) { const char *pdu = testset_msrpc_pdu_get_name[_i].data; const char *expected_name = testset_msrpc_pdu_get_name[_i].name; const char *name = msrpc_pdu_get_name(pdu); if (name) { if (!expected_name) { expected_name = ""; } fail_unless(strcmp(name, expected_name) == 0, " for iteration %u\n" "EXPECTED name: %s, BUT GOT name: %s", _i, expected_name, name); } else { fail(" for iteration %u\nEXPECTED a pdu name, BUT GOT a NULL pointer", _i); } } END_TEST START_TEST (test_msrpc_rts_pdu_get_command_name) { const char *pdu = testset_msrpc_rts_pdu_get_command_name[_i].data; uint32_t data_representation = ((msrpc_pdu_t *)pdu)->data_representation; unsigned int expected_command_count = testset_msrpc_rts_pdu_get_command_name[_i].rts_command_count; msrpc_rts_pdu_t *rtspdu = NULL; unsigned int i, rtspdulen; unsigned int offset = 0; apr_status_t rv; for (i = 0; i < expected_command_count; i++) { rv = msrpc_pdu_get_rts_pdu(pdu, offset, &rtspdu, &rtspdulen); fail_unless(rv == APR_SUCCESS, " for iteration %u\n" "EXPECTED rv 0, BUT GOT rv %u", _i, rv); const char *name = msrpc_rts_pdu_get_command_name(rtspdu, data_representation); const char *expected_name = testset_msrpc_rts_pdu_get_command_name[_i].name[i]; if (name) { if (!expected_name) { expected_name = ""; } fail_unless(strcmp(name, expected_name) == 0, " for iteration %u, RTS command %u\n" "EXPECTED name: %s, BUT GOT name: %s", _i, i, expected_name, name); } else { fail(" for iteration %u, RTS command %u\nEXPECTED a pdu name, BUT GOT a NULL pointer", _i, i); } offset += rtspdulen; } } END_TEST START_TEST (test_msrpc_rts_get_virtual_channel_cookie) { const char *pdu = testset_msrpc_rts_get_virtual_channel_cookie[_i].data; const uuid_t *expected_cookie = &testset_msrpc_rts_get_virtual_channel_cookie[_i].cookie; uuid_t *cookie = NULL; const char *error = NULL; apr_status_t rv = msrpc_rts_get_virtual_channel_cookie(pdu, &cookie, &error); fail_unless(rv == APR_SUCCESS, " for iteration %u\n" "EXPECTED no error, BUT GOT rv: %u (%s)", _i, rv, error); if (uuid_compare(*expected_cookie, *cookie) != 0) { char expected_uuid[37]; uuid_unparse(*expected_cookie, expected_uuid); char parsed_uuid[37]; uuid_unparse(*cookie, parsed_uuid); fail(" for iteration %u\nEXPECTED cookie %s, BUT GOT cookie: %s", _i, expected_uuid, parsed_uuid); } } END_TEST Suite * msrpc_pdu_parser_suite (void) { Suite *s = suite_create("MSRPC PDU parser"); /* check MSRPC PDU length retrieval */ TCase *tc = tcase_create ("MSRPC PDU length retrieval"); tcase_add_loop_test(tc, test_msrpc_pdu_get_length, 0, testset_msrpc_pdu_length_size); suite_add_tcase(s, tc); /* check MSRPC PDU validation */ tc = tcase_create ("MSRPC PDU validation"); tcase_add_loop_test(tc, test_msrpc_pdu_validate, 0, testset_msrpc_pdu_validate_size); suite_add_tcase(s, tc); /* check MSRPC RTS PDU count retrieval */ tc = tcase_create ("MSRPC PDU, RTS PDU count retrieval"); tcase_add_loop_test(tc, test_msrpc_pdu_get_rts_pdu_count, 0, testset_msrpc_pdu_get_rts_pdu_count_size); suite_add_tcase(s, tc); /* check MSRPC RTS length parsing */ tc = tcase_create ("MSRPC RTS PDU length check"); tcase_add_loop_test(tc, test_msrpc_rts_pdu_len, 0, testset_msrpc_rts_pdu_len_size); suite_add_tcase(s, tc); /* check MSRPC RTS PDU retrieval */ tc = tcase_create ("MSRPC PDU, RTS PDU retrieval"); tcase_add_loop_test(tc, test_msrpc_pdu_get_rts_pdu, 0, testset_msrpc_pdu_get_rts_pdu_size); suite_add_tcase(s, tc); /* check MSRPC PDU name */ tc = tcase_create ("MSRPC PDU name detection"); tcase_add_loop_test(tc, test_msrpc_pdu_get_name, 0, testset_msrpc_pdu_get_name_size); suite_add_tcase(s, tc); /* check MSRPC RTS command name */ tc = tcase_create ("MSRPC RTS command name detection"); tcase_add_loop_test(tc, test_msrpc_rts_pdu_get_command_name, 0, testset_msrpc_rts_pdu_get_command_name_size); suite_add_tcase(s, tc); /* check virtual channel cookie */ tc = tcase_create ("MSRPC RTS virtual channel cookie"); tcase_add_loop_test(tc, test_msrpc_rts_get_virtual_channel_cookie, 0, testset_msrpc_rts_get_virtual_channel_cookie_size); suite_add_tcase(s, tc); return s; } int main(void) { int number_failed; Suite *s = msrpc_pdu_parser_suite(); SRunner *sr = srunner_create(s); srunner_set_log (sr, "check.log"); srunner_run_all(sr, CK_NORMAL); number_failed = srunner_ntests_failed(sr); srunner_free(sr); return (number_failed == 0) ? EXIT_SUCCESS : EXIT_FAILURE; } mod_proxy_msrpc-mod_proxy_msrpc-0.6/test/check_msrpc_sync.c000066400000000000000000000073301237436577000245060ustar00rootroot00000000000000/************************************************************************** * Copyright (C) 2013 Astaro GmbH & Co. KG -- a Sophos company * Astaro GmbH & Co. KG licenses this file to You under the Apache License, * Version 2.0 (the "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * * Author: Micha Lenk -- 2013-03-05 * ***************************************************************************/ #include #include #include #include #include #include "msrpc_sync.h" typedef struct { const char *key; int timeout; int8_t exp_value; int exp_errno; } test_msrpc_sync_wait_t; const static test_msrpc_sync_wait_t testset_msrpc_sync_wait[] = { { "/tmp/test_fifo", 1, -1, ETIMEDOUT }, { "/dev/zero", 1, 0, 0 }, { "/dev/null", 1, -1, ENODATA }, }; const static size_t testset_msrpc_sync_wait_size = sizeof(testset_msrpc_sync_wait) / sizeof(test_msrpc_sync_wait_t); typedef struct { const char *key; int8_t value; int exp_rv; int exp_errno; } test_msrpc_sync_ready_t; const static test_msrpc_sync_ready_t testset_msrpc_sync_ready[] = { { "/tmp/test_fifo", 42, 0, 0 }, { "/dev/null", 42, -1, EEXIST }, }; const static size_t testset_msrpc_sync_ready_size = sizeof(testset_msrpc_sync_ready) / sizeof(test_msrpc_sync_ready_t); START_TEST (test_msrpc_sync_wait) { const test_msrpc_sync_wait_t *ts = &testset_msrpc_sync_wait[_i]; int8_t value = msrpc_sync_wait(ts->key, ts->timeout); fail_unless(value == ts->exp_value, " for iteration %u on fifo %s\n" "EXPECTED value %d, BUT GOT value %d (%m)", _i, ts->key, ts->exp_value, value); if (value != 0) { fail_unless(errno == ts->exp_errno, " for iteration %u on fifo %s\n" "EXPECTED errno %d, BUT GOT errno %d", _i, ts->key, ts->exp_errno, errno); } } END_TEST START_TEST (test_msrpc_sync_ready) { const test_msrpc_sync_ready_t *ts = &testset_msrpc_sync_ready[_i]; int rv = msrpc_sync_ready(ts->key, ts->value); int rv_errno = errno; unlink(ts->key); errno = rv_errno; fail_unless(rv == ts->exp_rv, " for iteration %u on fifo %s\n" "EXPECTED rv %d, BUT GOT rv %d (%m)", _i, ts->key, ts->exp_rv, rv); if (rv != 0) { fail_unless(errno == ts->exp_errno, " for iteration %u on fifo %s\n" "EXPECTED errno %d, BUT GOT errno %d (%m)", _i, ts->key, ts->exp_errno, errno); } } END_TEST Suite * msrpc_fifo_suite (void) { Suite *s = suite_create("MSRPC synchronization"); /* check MSRPC FIFO wait */ TCase *tc = tcase_create ("MSRPC sync wait"); tcase_add_loop_test(tc, test_msrpc_sync_wait, 0, testset_msrpc_sync_wait_size); suite_add_tcase(s, tc); /* check MSRPC FIFO ready */ tc = tcase_create ("MSRPC sync ready"); tcase_add_loop_test(tc, test_msrpc_sync_ready, 0, testset_msrpc_sync_ready_size); suite_add_tcase(s, tc); return s; } int main(void) { int number_failed; Suite *s = msrpc_fifo_suite(); SRunner *sr = srunner_create(s); srunner_set_log (sr, "check.log"); srunner_run_all(sr, CK_NORMAL); number_failed = srunner_ntests_failed(sr); srunner_free(sr); return (number_failed == 0) ? EXIT_SUCCESS : EXIT_FAILURE; }