diff options
Diffstat (limited to '')
| -rw-r--r-- | plugins/imrelp/Makefile.am | 6 | ||||
| -rw-r--r-- | plugins/imrelp/Makefile.in | 797 | ||||
| -rw-r--r-- | plugins/imrelp/imrelp.c | 954 |
3 files changed, 1757 insertions, 0 deletions
diff --git a/plugins/imrelp/Makefile.am b/plugins/imrelp/Makefile.am new file mode 100644 index 0000000..8c6faff --- /dev/null +++ b/plugins/imrelp/Makefile.am @@ -0,0 +1,6 @@ +pkglib_LTLIBRARIES = imrelp.la + +imrelp_la_SOURCES = imrelp.c +imrelp_la_CPPFLAGS = -I$(top_srcdir) $(PTHREADS_CFLAGS) $(RELP_CFLAGS) $(RSRT_CFLAGS) +imrelp_la_LDFLAGS = -module -avoid-version +imrelp_la_LIBADD = $(RELP_LIBS) diff --git a/plugins/imrelp/Makefile.in b/plugins/imrelp/Makefile.in new file mode 100644 index 0000000..d5c2dd0 --- /dev/null +++ b/plugins/imrelp/Makefile.in @@ -0,0 +1,797 @@ +# Makefile.in generated by automake 1.16.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2018 Free Software Foundation, Inc. + +# This Makefile.in is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY, to the extent permitted by law; without +# even the implied warranty of MERCHANTABILITY or FITNESS FOR A +# PARTICULAR PURPOSE. + +@SET_MAKE@ + +VPATH = @srcdir@ +am__is_gnu_make = { \ + if test -z '$(MAKELEVEL)'; then \ + false; \ + elif test -n '$(MAKE_HOST)'; then \ + true; \ + elif test -n '$(MAKE_VERSION)' && test -n '$(CURDIR)'; then \ + true; \ + else \ + false; \ + fi; \ +} +am__make_running_with_option = \ + case $${target_option-} in \ + ?) ;; \ + *) echo "am__make_running_with_option: internal error: invalid" \ + "target option '$${target_option-}' specified" >&2; \ + exit 1;; \ + esac; \ + has_opt=no; \ + sane_makeflags=$$MAKEFLAGS; \ + if $(am__is_gnu_make); then \ + sane_makeflags=$$MFLAGS; \ + else \ + case $$MAKEFLAGS in \ + *\\[\ \ ]*) \ + bs=\\; \ + sane_makeflags=`printf '%s\n' "$$MAKEFLAGS" \ + | sed "s/$$bs$$bs[$$bs $$bs ]*//g"`;; \ + esac; \ + fi; \ + skip_next=no; \ + strip_trailopt () \ + { \ + flg=`printf '%s\n' "$$flg" | sed "s/$$1.*$$//"`; \ + }; \ + for flg in $$sane_makeflags; do \ + test $$skip_next = yes && { skip_next=no; continue; }; \ + case $$flg in \ + *=*|--*) continue;; \ + -*I) strip_trailopt 'I'; skip_next=yes;; \ + -*I?*) strip_trailopt 'I';; \ + -*O) strip_trailopt 'O'; skip_next=yes;; \ + -*O?*) strip_trailopt 'O';; \ + -*l) strip_trailopt 'l'; skip_next=yes;; \ + -*l?*) strip_trailopt 'l';; \ + -[dEDm]) skip_next=yes;; \ + -[JT]) skip_next=yes;; \ + esac; \ + case $$flg in \ + *$$target_option*) has_opt=yes; break;; \ + esac; \ + done; \ + test $$has_opt = yes +am__make_dryrun = (target_option=n; $(am__make_running_with_option)) +am__make_keepgoing = (target_option=k; $(am__make_running_with_option)) +pkgdatadir = $(datadir)/@PACKAGE@ +pkgincludedir = $(includedir)/@PACKAGE@ +pkglibdir = $(libdir)/@PACKAGE@ +pkglibexecdir = $(libexecdir)/@PACKAGE@ +am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd +install_sh_DATA = $(install_sh) -c -m 644 +install_sh_PROGRAM = $(install_sh) -c +install_sh_SCRIPT = $(install_sh) -c +INSTALL_HEADER = $(INSTALL_DATA) +transform = $(program_transform_name) +NORMAL_INSTALL = : +PRE_INSTALL = : +POST_INSTALL = : +NORMAL_UNINSTALL = : +PRE_UNINSTALL = : +POST_UNINSTALL = : +build_triplet = @build@ +host_triplet = @host@ +subdir = plugins/imrelp +ACLOCAL_M4 = $(top_srcdir)/aclocal.m4 +am__aclocal_m4_deps = $(top_srcdir)/m4/ac_check_define.m4 \ + $(top_srcdir)/m4/atomic_operations.m4 \ + $(top_srcdir)/m4/atomic_operations_64bit.m4 \ + $(top_srcdir)/m4/libtool.m4 $(top_srcdir)/m4/ltoptions.m4 \ + $(top_srcdir)/m4/ltsugar.m4 $(top_srcdir)/m4/ltversion.m4 \ + $(top_srcdir)/m4/lt~obsolete.m4 $(top_srcdir)/configure.ac +am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \ + $(ACLOCAL_M4) +DIST_COMMON = $(srcdir)/Makefile.am $(am__DIST_COMMON) +mkinstalldirs = $(install_sh) -d +CONFIG_HEADER = $(top_builddir)/config.h +CONFIG_CLEAN_FILES = +CONFIG_CLEAN_VPATH_FILES = +am__vpath_adj_setup = srcdirstrip=`echo "$(srcdir)" | sed 's|.|.|g'`; +am__vpath_adj = case $$p in \ + $(srcdir)/*) f=`echo "$$p" | sed "s|^$$srcdirstrip/||"`;; \ + *) f=$$p;; \ + esac; +am__strip_dir = f=`echo $$p | sed -e 's|^.*/||'`; +am__install_max = 40 +am__nobase_strip_setup = \ + srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*|]/\\\\&/g'` +am__nobase_strip = \ + for p in $$list; do echo "$$p"; done | sed -e "s|$$srcdirstrip/||" +am__nobase_list = $(am__nobase_strip_setup); \ + for p in $$list; do echo "$$p $$p"; done | \ + sed "s| $$srcdirstrip/| |;"' / .*\//!s/ .*/ ./; s,\( .*\)/[^/]*$$,\1,' | \ + $(AWK) 'BEGIN { files["."] = "" } { files[$$2] = files[$$2] " " $$1; \ + if (++n[$$2] == $(am__install_max)) \ + { print $$2, files[$$2]; n[$$2] = 0; files[$$2] = "" } } \ + END { for (dir in files) print dir, files[dir] }' +am__base_list = \ + sed '$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;$$!N;s/\n/ /g' | \ + sed '$$!N;$$!N;$$!N;$$!N;s/\n/ /g' +am__uninstall_files_from_dir = { \ + test -z "$$files" \ + || { test ! 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a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * -or- + * see COPYING.ASL20 in the source distribution + * + * 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. + */ +#include "config.h" +#include <stdlib.h> +#include <assert.h> +#include <string.h> +#include <errno.h> +#include <unistd.h> +#include <stdarg.h> +#include <ctype.h> +#include <netinet/in.h> +#include <netdb.h> +#include <sys/types.h> +#include <sys/socket.h> +#include <signal.h> +#include <librelp.h> +#include "rsyslog.h" +#include "dirty.h" +#include "errmsg.h" +#include "cfsysline.h" +#include "module-template.h" +#include "net.h" +#include "msg.h" +#include "unicode-helper.h" +#include "prop.h" +#include "ruleset.h" +#include "glbl.h" +#include "statsobj.h" +#include "srUtils.h" +#include "parserif.h" + +MODULE_TYPE_INPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("imrelp") + +/* static data */ +DEF_IMOD_STATIC_DATA +DEFobjCurrIf(net) +DEFobjCurrIf(prop) +DEFobjCurrIf(ruleset) +DEFobjCurrIf(glbl) +DEFobjCurrIf(statsobj) + +/* forward definitions */ +static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal); + + +/* Module static data */ +/* config vars for legacy config system */ +static relpEngine_t *pRelpEngine; /* our relp engine */ + +/* config settings */ +typedef struct configSettings_s { + uchar *pszBindRuleset; /* name of Ruleset to bind to */ +} configSettings_t; +static configSettings_t cs; + +struct instanceConf_s { + uchar *pszBindPort; /* port to bind to */ + uchar *pszBindAddr; /* address to bind to */ + uchar *pszBindRuleset; /* name of ruleset to bind to */ + uchar *pszInputName; /* value for inputname property */ + prop_t *pInputName; /* InputName in property format for fast access */ + ruleset_t *pBindRuleset; /* ruleset to bind listener to */ + sbool bKeepAlive; /* support keep-alive packets */ + sbool bEnableTLS; + sbool bEnableTLSZip; + sbool bEnableLstn; /* flag to permit disabling of listener in error case */ + int dhBits; + size_t maxDataSize; + int oversizeMode; + uchar *pristring; /* GnuTLS priority string (NULL if not to be provided) */ + uchar *authmode; /* TLS auth mode */ + uchar *caCertFile; + uchar *myCertFile; + uchar *myPrivKeyFile; +#if defined(HAVE_RELPENGINESETTLSCFGCMD) + uchar *tlscfgcmd; +#endif + int iKeepAliveIntvl; + int iKeepAliveProbes; + int iKeepAliveTime; + flowControl_t flowCtlType; + struct { + int nmemb; + uchar **name; + } permittedPeers; + + struct instanceConf_s *next; + /* with librelp, this module does not have any own specific session + * or listener active data item. As a "work-around", we keep some + * data items inside the configuration object. To keep things + * decently clean, we put them all into their dedicated struct. So + * it is easy to judge what is actual configuration and what is + * dynamic runtime data. -- rgerhards, 2013-06-18 + */ + struct { + statsobj_t *stats; /* listener stats */ + STATSCOUNTER_DEF(ctrSubmit, mutCtrSubmit) + } data; +}; + + +struct modConfData_s { + rsconf_t *pConf; /* our overall config object */ + instanceConf_t *root, *tail; + const char *tlslib; + uchar *pszBindRuleset; /* default name of Ruleset to bind to */ +}; + +static modConfData_t *loadModConf = NULL;/* modConf ptr to use for the current load process */ +static modConfData_t *runModConf = NULL;/* modConf ptr to use for the current load process */ + +/* module-global parameters */ +static struct cnfparamdescr modpdescr[] = { + { "ruleset", eCmdHdlrGetWord, 0 }, + { "tls.tlslib", eCmdHdlrString, 0 } +}; +static struct cnfparamblk modpblk = + { CNFPARAMBLK_VERSION, + sizeof(modpdescr)/sizeof(struct cnfparamdescr), + modpdescr + }; + +/* input instance parameters */ +static struct cnfparamdescr inppdescr[] = { + { "port", eCmdHdlrString, CNFPARAM_REQUIRED }, + { "address", eCmdHdlrString, 0 }, + { "name", eCmdHdlrString, 0 }, + { "ruleset", eCmdHdlrString, 0 }, + { "keepalive", eCmdHdlrBinary, 0 }, + { "keepalive.probes", eCmdHdlrInt, 0 }, + { "keepalive.time", eCmdHdlrInt, 0 }, + { "keepalive.interval", eCmdHdlrInt, 0 }, + { "maxdatasize", eCmdHdlrSize, 0 }, + { "oversizemode", eCmdHdlrString, 0 }, + { "flowcontrol", eCmdHdlrGetWord, 0 }, + { "tls", eCmdHdlrBinary, 0 }, + { "tls.permittedpeer", eCmdHdlrArray, 0 }, + { "tls.authmode", eCmdHdlrString, 0 }, + { "tls.dhbits", eCmdHdlrInt, 0 }, + { "tls.prioritystring", eCmdHdlrString, 0 }, + { "tls.cacert", eCmdHdlrString, 0 }, + { "tls.mycert", eCmdHdlrString, 0 }, + { "tls.myprivkey", eCmdHdlrString, 0 }, + { "tls.tlscfgcmd", eCmdHdlrString, 0 }, + { "tls.compression", eCmdHdlrBinary, 0 } +}; +static struct cnfparamblk inppblk = + { CNFPARAMBLK_VERSION, + sizeof(inppdescr)/sizeof(struct cnfparamdescr), + inppdescr + }; + +#include "im-helper.h" /* must be included AFTER the type definitions! */ +static int bLegacyCnfModGlobalsPermitted;/* are legacy module-global config parameters permitted? */ + +/* ------------------------------ callbacks ------------------------------ */ + +PRAGMA_DIAGNOSTIC_PUSH +PRAGMA_IGNORE_Wformat_nonliteral +static void __attribute__((format(printf, 1, 2))) +imrelp_dbgprintf(const char *fmt, ...) +{ + va_list ap; + char pszWriteBuf[32*1024+1]; //this function has to be able to + /*generate a buffer longer than that of r_dbgprintf, so + r_dbgprintf can properly truncate*/ + + if(!(Debug && debugging_on)) { + return; + } + + va_start(ap, fmt); + vsnprintf(pszWriteBuf, sizeof(pszWriteBuf), fmt, ap); + va_end(ap); + r_dbgprintf("imrelp.c", "%s", pszWriteBuf); +} +PRAGMA_DIAGNOSTIC_POP + +static void +onErr(void *pUsr, char *objinfo, char* errmesg, __attribute__((unused)) relpRetVal errcode) +{ + instanceConf_t *inst = (instanceConf_t*) pUsr; + LogError(0, RS_RET_RELP_AUTH_FAIL, "imrelp[%s]: error '%s', object " + " '%s' - input may not work as intended", + inst->pszBindPort, errmesg, objinfo); +} + +static void +onGenericErr(char *objinfo, char* errmesg, __attribute__((unused)) relpRetVal errcode) +{ + LogError(0, RS_RET_RELP_ERR, "imrelp: librelp error '%s', object " + " '%s' - input may not work as intended", errmesg, objinfo); +} + +static void +onAuthErr(void *pUsr, char *authinfo, char* errmesg, __attribute__((unused)) relpRetVal errcode) +{ + instanceConf_t *inst = (instanceConf_t*) pUsr; + LogError(0, RS_RET_RELP_AUTH_FAIL, "imrelp[%s]: authentication error '%s', peer " + "is '%s'", inst->pszBindPort, errmesg, authinfo); +} + +/* callback for receiving syslog messages. This function is invoked from the + * RELP engine when a syslog message arrived. It must return a relpRetVal, + * with anything else but RELP_RET_OK terminating the relp session. Please note + * that RELP_RET_OK is equal to RS_RET_OK and the other libRELP error codes + * are different from our rsRetVal. So we can simply use our own iRet system + * to fulfill the requirement. + * rgerhards, 2008-03-21 + * Note: librelp 1.0.0 is required in order to receive the IP address, otherwise + * we will only see the hostname (twice). -- rgerhards, 2009-10-14 + */ +static relpRetVal +onSyslogRcv(void *pUsr, uchar *pHostname, uchar *pIP, uchar *msg, size_t lenMsg) +{ + prop_t *pProp = NULL; + smsg_t *pMsg; + instanceConf_t *inst = (instanceConf_t*) pUsr; + DEFiRet; + + CHKiRet(msgConstruct(&pMsg)); + MsgSetInputName(pMsg, inst->pInputName); + MsgSetRawMsg(pMsg, (char*)msg, lenMsg); + MsgSetFlowControlType(pMsg, inst->flowCtlType); + MsgSetRuleset(pMsg, inst->pBindRuleset); + pMsg->msgFlags = PARSE_HOSTNAME | NEEDS_PARSING; + + /* TODO: optimize this, we can store it inside the session */ + MsgSetRcvFromStr(pMsg, pHostname, ustrlen(pHostname), &pProp); + CHKiRet(prop.Destruct(&pProp)); + CHKiRet(MsgSetRcvFromIPStr(pMsg, pIP, ustrlen(pIP), &pProp)); + CHKiRet(prop.Destruct(&pProp)); + CHKiRet(submitMsg2(pMsg)); + STATSCOUNTER_INC(inst->data.ctrSubmit, inst->data.mutCtrSubmit); + +finalize_it: + + RETiRet; +} + + +/* ------------------------------ end callbacks ------------------------------ */ + +/* create input instance, set default parameters, and + * add it to the list of instances. + */ +static rsRetVal +createInstance(instanceConf_t **pinst) +{ + instanceConf_t *inst; + DEFiRet; + CHKmalloc(inst = malloc(sizeof(instanceConf_t))); + inst->next = NULL; + + inst->pszBindPort = NULL; + inst->pszBindAddr = NULL; + inst->pszBindRuleset = NULL; + inst->pszInputName = NULL; + inst->pBindRuleset = NULL; + inst->bKeepAlive = 0; + inst->iKeepAliveIntvl = 0; + inst->iKeepAliveProbes = 0; + inst->iKeepAliveTime = 0; + inst->bEnableTLS = 0; + inst->bEnableTLSZip = 0; + inst->bEnableLstn = 0; + inst->dhBits = 0; + inst->pristring = NULL; + inst->authmode = NULL; + inst->permittedPeers.nmemb = 0; + inst->caCertFile = NULL; + inst->myCertFile = NULL; + inst->myPrivKeyFile = NULL; +#if defined(HAVE_RELPENGINESETTLSCFGCMD) + inst->tlscfgcmd = NULL; +#endif + inst->maxDataSize = 0; + inst->flowCtlType = eFLOWCTL_LIGHT_DELAY; +#ifdef HAVE_RELPSRVSETOVERSIZEMODE + inst->oversizeMode = RELP_OVERSIZE_TRUNCATE; +#endif + + /* node created, let's add to config */ + if(loadModConf->tail == NULL) { + loadModConf->tail = loadModConf->root = inst; + } else { + loadModConf->tail->next = inst; + loadModConf->tail = inst; + } + + *pinst = inst; +finalize_it: + RETiRet; +} + + +/* function to generate an error message if the ruleset cannot be found */ +static inline void +std_checkRuleset_genErrMsg(__attribute__((unused)) modConfData_t *modConf, instanceConf_t *inst) +{ + LogError(0, NO_ERRCODE, "imrelp[%s]: ruleset '%s' not found - " + "using default ruleset instead", + inst->pszBindPort, inst->pszBindRuleset); +} + + +/* This function is called when a new listener instance shall be added to + * the current config object via the legacy config system. It just shuffles + * all parameters to the listener in-memory instance. + * rgerhards, 2011-05-04 + */ +static rsRetVal addInstance(void __attribute__((unused)) *pVal, uchar *pNewVal) +{ + instanceConf_t *inst; + DEFiRet; + + CHKiRet(createInstance(&inst)); + + if(pNewVal == NULL || *pNewVal == '\0') { + LogError(0, NO_ERRCODE, "imrelp: port number must be specified, listener ignored"); + } + if((pNewVal == NULL) || (*pNewVal == '\0')) { + inst->pszBindPort = NULL; + } else { + CHKmalloc(inst->pszBindPort = ustrdup(pNewVal)); + } + if((cs.pszBindRuleset == NULL) || (cs.pszBindRuleset[0] == '\0')) { + inst->pszBindRuleset = NULL; + } else { + CHKmalloc(inst->pszBindRuleset = ustrdup(cs.pszBindRuleset)); + } + inst->pBindRuleset = NULL; + + inst->bEnableLstn = -1; /* all ok, ready to start up */ +finalize_it: + free(pNewVal); + RETiRet; +} + + +static rsRetVal +addListner(modConfData_t __attribute__((unused)) *modConf, instanceConf_t *inst) +{ + relpSrv_t *pSrv; + int relpRet; + uchar statname[64]; + int i; + DEFiRet; + + if(!inst->bEnableLstn) { + DBGPRINTF("listener not started because it is disabled by config error\n"); + FINALIZE; + } + + if(pRelpEngine == NULL) { + CHKiRet(relpEngineConstruct(&pRelpEngine)); + CHKiRet(relpEngineSetDbgprint(pRelpEngine, (void (*)(char *, ...))imrelp_dbgprintf)); + CHKiRet(relpEngineSetFamily(pRelpEngine, glbl.GetDefPFFamily(runModConf->pConf))); + CHKiRet(relpEngineSetEnableCmd(pRelpEngine, (uchar*) "syslog", eRelpCmdState_Required)); + CHKiRet(relpEngineSetSyslogRcv2(pRelpEngine, onSyslogRcv)); + CHKiRet(relpEngineSetOnErr(pRelpEngine, onErr)); + CHKiRet(relpEngineSetOnGenericErr(pRelpEngine, onGenericErr)); + CHKiRet(relpEngineSetOnAuthErr(pRelpEngine, onAuthErr)); + if (!glbl.GetDisableDNS(runModConf->pConf)) { + CHKiRet(relpEngineSetDnsLookupMode(pRelpEngine, 1)); + } + #if defined(HAVE_RELPENGINESETTLSLIBBYNAME) + if(modConf->tlslib != NULL) { + if(relpEngineSetTLSLibByName(pRelpEngine, modConf->tlslib) != RELP_RET_OK) { + LogMsg(0, RS_RET_CONF_PARAM_INVLD, LOG_WARNING, + "imrelp: tlslib '%s' not accepted as valid by librelp - using default", + modConf->tlslib); + } + } + #endif + } + + CHKiRet(relpEngineListnerConstruct(pRelpEngine, &pSrv)); + CHKiRet(relpSrvSetMaxDataSize(pSrv, inst->maxDataSize)); + CHKiRet(relpSrvSetLstnPort(pSrv, inst->pszBindPort)); + #if defined(HAVE_RELPSRVSETLSTNADDR) + CHKiRet(relpSrvSetLstnAddr(pSrv, inst->pszBindAddr)); + #endif + +#ifdef HAVE_RELPSRVSETOVERSIZEMODE + CHKiRet(relpSrvSetOversizeMode(pSrv, inst->oversizeMode)); +#endif + inst->pszInputName = ustrdup((inst->pszInputName == NULL) ? UCHAR_CONSTANT("imrelp") : inst->pszInputName); + CHKiRet(prop.Construct(&inst->pInputName)); + CHKiRet(prop.SetString(inst->pInputName, inst->pszInputName, ustrlen(inst->pszInputName))); + CHKiRet(prop.ConstructFinalize(inst->pInputName)); + /* support statistics gathering */ + CHKiRet(statsobj.Construct(&(inst->data.stats))); + snprintf((char*)statname, sizeof(statname), "%s(%s)", + inst->pszInputName, inst->pszBindPort); + statname[sizeof(statname)-1] = '\0'; /* just to be on the save side... */ + CHKiRet(statsobj.SetName(inst->data.stats, statname)); + CHKiRet(statsobj.SetOrigin(inst->data.stats, (uchar*)"imrelp")); + STATSCOUNTER_INIT(inst->data.ctrSubmit, inst->data.mutCtrSubmit); + CHKiRet(statsobj.AddCounter(inst->data.stats, UCHAR_CONSTANT("submitted"), + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &(inst->data.ctrSubmit))); + CHKiRet(statsobj.ConstructFinalize(inst->data.stats)); + /* end stats counters */ + relpSrvSetUsrPtr(pSrv, inst); + relpSrvSetKeepAlive(pSrv, inst->bKeepAlive, inst->iKeepAliveIntvl, + inst->iKeepAliveProbes, inst->iKeepAliveTime); + if(inst->bEnableTLS) { + relpRet = relpSrvEnableTLS2(pSrv); + if(relpRet == RELP_RET_ERR_NO_TLS) { + LogError(0, RS_RET_RELP_NO_TLS, + "imrelp: could not activate relp TLS, librelp " + "does not support it (most probably GnuTLS lib " + "is too old)!"); + ABORT_FINALIZE(RS_RET_RELP_NO_TLS); + } else if(relpRet == RELP_RET_ERR_NO_TLS_AUTH) { + LogError(0, RS_RET_RELP_NO_TLS_AUTH, + "imrelp: could not activate relp TLS with " + "authentication, librelp does not support it " + "(most probably GnuTLS lib is too old)! " + "Note: anonymous TLS is probably supported."); + ABORT_FINALIZE(RS_RET_RELP_NO_TLS_AUTH); + } else if(relpRet != RELP_RET_OK) { + LogError(0, RS_RET_RELP_ERR, + "imrelp: could not activate relp TLS, code %d", relpRet); + ABORT_FINALIZE(RS_RET_RELP_ERR); + } + if(inst->bEnableTLSZip) { + relpSrvEnableTLSZip2(pSrv); + } + if(inst->dhBits) { + relpSrvSetDHBits(pSrv, inst->dhBits); + } + relpSrvSetGnuTLSPriString(pSrv, (char*)inst->pristring); + if(relpSrvSetAuthMode(pSrv, (char*)inst->authmode) != RELP_RET_OK) { + LogError(0, RS_RET_RELP_ERR, + "imrelp: invalid auth mode '%s'", inst->authmode); + ABORT_FINALIZE(RS_RET_RELP_ERR); + } + if(relpSrvSetCACert(pSrv, (char*) inst->caCertFile) != RELP_RET_OK) + ABORT_FINALIZE(RS_RET_RELP_ERR); + if(relpSrvSetOwnCert(pSrv, (char*) inst->myCertFile) != RELP_RET_OK) + ABORT_FINALIZE(RS_RET_RELP_ERR); + if(relpSrvSetPrivKey(pSrv, (char*) inst->myPrivKeyFile) != RELP_RET_OK) + ABORT_FINALIZE(RS_RET_RELP_ERR); +#if defined(HAVE_RELPENGINESETTLSCFGCMD) + if (inst->tlscfgcmd != NULL) { + if(relpSrvSetTlsConfigCmd(pSrv, (char*) inst->tlscfgcmd) != RELP_RET_OK) + ABORT_FINALIZE(RS_RET_RELP_ERR); + } +#endif + for(i = 0 ; i < inst->permittedPeers.nmemb ; ++i) { + relpSrvAddPermittedPeer(pSrv, (char*)inst->permittedPeers.name[i]); + } + } + relpRet = relpEngineListnerConstructFinalize(pRelpEngine, pSrv); + /* re-check error TLS error codes. librelp seems to emit them only + * after finalize in some cases... + */ + if(relpRet == RELP_RET_ERR_NO_TLS) { + LogError(0, RS_RET_RELP_NO_TLS, + "imrelp: could not activate relp TLS listener, librelp " + "does not support it (most probably GnuTLS lib " + "is too old)!"); + ABORT_FINALIZE(RS_RET_RELP_NO_TLS); + } else if(relpRet == RELP_RET_ERR_NO_TLS_AUTH) { + LogError(0, RS_RET_RELP_NO_TLS_AUTH, + "imrelp: could not activate relp TLS listener with " + "authentication, librelp does not support it " + "(most probably GnuTLS lib is too old)! " + "Note: anonymous TLS is probably supported."); + ABORT_FINALIZE(RS_RET_RELP_NO_TLS_AUTH); + } else if(relpRet != RELP_RET_OK) { + LogError(0, RS_RET_RELP_ERR, + "imrelp: could not activate relp listener, code %d", relpRet); + ABORT_FINALIZE(RS_RET_RELP_ERR); + } + + DBGPRINTF("imrelp: max data size %zd\n", inst->maxDataSize); + resetConfigVariables(NULL,NULL); + +finalize_it: + RETiRet; +} + + +BEGINnewInpInst + struct cnfparamvals *pvals; + instanceConf_t *inst = NULL; + int i,j; + FILE *fp; +CODESTARTnewInpInst + DBGPRINTF("newInpInst (imrelp)\n"); + + if((pvals = nvlstGetParams(lst, &inppblk, NULL)) == NULL) { + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + if(Debug) { + dbgprintf("input param blk in imrelp:\n"); + cnfparamsPrint(&inppblk, pvals); + } + + CHKiRet(createInstance(&inst)); + + for(i = 0 ; i < inppblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(inppblk.descr[i].name, "port")) { + inst->pszBindPort = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "address")) { + #if defined(HAVE_RELPSRVSETLSTNADDR) + inst->pszBindAddr = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + #else + parser_errmsg("imrelp: librelp does not support input parameter 'address'; " + "it probably is too old (1.2.16 should be fine); ignoring setting now, " + "listening on all interfaces"); + #endif + } else if(!strcmp(inppblk.descr[i].name, "name")) { + inst->pszInputName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "ruleset")) { + inst->pszBindRuleset = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "maxdatasize")) { + inst->maxDataSize = (size_t) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "flowcontrol")) { + if(!es_strconstcmp(pvals[i].val.d.estr, "none")) { + inst->flowCtlType = eFLOWCTL_NO_DELAY; + } else if(!es_strconstcmp(pvals[i].val.d.estr, "light")) { + inst->flowCtlType = eFLOWCTL_LIGHT_DELAY; + } else if(!es_strconstcmp(pvals[i].val.d.estr, "full")) { + inst->flowCtlType = eFLOWCTL_FULL_DELAY; + } else { + const char *const mode = es_str2cstr(pvals[i].val.d.estr, NULL); + parser_errmsg("imrelp: wrong flowcontrol parameter " + "value '%s', using default: 'light'; possible " + "values: 'no', 'light', 'full'\n", mode); + free((void*)mode); + } + } else if(!strcmp(inppblk.descr[i].name, "oversizemode")) { +#ifdef HAVE_RELPSRVSETOVERSIZEMODE + char *mode = es_str2cstr(pvals[i].val.d.estr, NULL); + if(!strcmp(mode, "abort")) { + inst->oversizeMode = RELP_OVERSIZE_ABORT; + } else if(!strcmp(mode, "truncate")) { + inst->oversizeMode = RELP_OVERSIZE_TRUNCATE; + } else if(!strcmp(mode, "accept")) { + inst->oversizeMode = RELP_OVERSIZE_ACCEPT; + } else { + parser_errmsg("imrelp: wrong oversizeMode parameter " + "value %s, using default: truncate\n", mode); + inst->oversizeMode = RELP_OVERSIZE_TRUNCATE; + } +#else + parser_errmsg("imrelp: parameter oversizeMode is not available in " + "this relp version and is therefore disabled."); +#endif + } else if(!strcmp(inppblk.descr[i].name, "keepalive")) { + inst->bKeepAlive = (sbool) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "keepalive.probes")) { + inst->iKeepAliveProbes = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "keepalive.time")) { + inst->iKeepAliveTime = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "keepalive.interval")) { + inst->iKeepAliveIntvl = (int) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "tls")) { + inst->bEnableTLS = (unsigned) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "tls.dhbits")) { + inst->dhBits = (unsigned) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "tls.prioritystring")) { + inst->pristring = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "tls.authmode")) { + inst->authmode = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "tls.compression")) { + inst->bEnableTLSZip = (unsigned) pvals[i].val.d.n; + } else if(!strcmp(inppblk.descr[i].name, "tls.cacert")) { + inst->caCertFile = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + fp = fopen((const char*)inst->caCertFile, "r"); + if(fp == NULL) { + char errStr[1024]; + rs_strerror_r(errno, errStr, sizeof(errStr)); + LogError(0, RS_RET_NO_FILE_ACCESS, + "error: certificate file %s couldn't be accessed: %s\n", + inst->caCertFile, errStr); + } else { + fclose(fp); + } + } else if(!strcmp(inppblk.descr[i].name, "tls.mycert")) { + inst->myCertFile = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + fp = fopen((const char*)inst->myCertFile, "r"); + if(fp == NULL) { + char errStr[1024]; + rs_strerror_r(errno, errStr, sizeof(errStr)); + LogError(0, RS_RET_NO_FILE_ACCESS, + "error: certificate file %s couldn't be accessed: %s\n", + inst->myCertFile, errStr); + } else { + fclose(fp); + } + } else if(!strcmp(inppblk.descr[i].name, "tls.myprivkey")) { + inst->myPrivKeyFile = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + fp = fopen((const char*)inst->myPrivKeyFile, "r"); + if(fp == NULL) { + char errStr[1024]; + rs_strerror_r(errno, errStr, sizeof(errStr)); + LogError(0, RS_RET_NO_FILE_ACCESS, + "error: certificate file %s couldn't be accessed: %s\n", + inst->myPrivKeyFile, errStr); + } else { + fclose(fp); + } + } else if(!strcmp(inppblk.descr[i].name, "tls.tlscfgcmd")) { +#if defined(HAVE_RELPENGINESETTLSCFGCMD) + inst->tlscfgcmd = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); +#else + parser_errmsg("imrelp: librelp does not support input parameter 'tls.tlscfgcmd'; " + "it probably is too old (1.5.0 or higher should be fine); ignoring setting now."); +#endif + } else if(!strcmp(inppblk.descr[i].name, "tls.permittedpeer")) { + inst->permittedPeers.nmemb = pvals[i].val.d.ar->nmemb; + CHKmalloc(inst->permittedPeers.name = + malloc(sizeof(uchar*) * inst->permittedPeers.nmemb)); + for(j = 0 ; j < pvals[i].val.d.ar->nmemb ; ++j) { + inst->permittedPeers.name[j] = (uchar*)es_str2cstr(pvals[i].val.d.ar->arr[j], NULL); + } + } else { + dbgprintf("imrelp: program error, non-handled " + "param '%s'\n", inppblk.descr[i].name); + } + } + + if(inst->myCertFile != NULL && inst->myPrivKeyFile == NULL) { + LogError(0, RS_RET_ERR, "imrelp: certificate file given but no corresponding " + "private key file - this is invalid, listener cannot be started"); + ABORT_FINALIZE(RS_RET_ERR); + } + if(inst->myCertFile == NULL && inst->myPrivKeyFile != NULL) { + LogError(0, RS_RET_ERR, "imrelp: private key file given but no corresponding " + "certificate file - this is invalid, listener cannot be started"); + ABORT_FINALIZE(RS_RET_ERR); + } + + inst->bEnableLstn = -1; /* all ok, ready to start up */ + +finalize_it: +CODE_STD_FINALIZERnewInpInst + cnfparamvalsDestruct(pvals, &inppblk); + if(iRet != RS_RET_OK) { + if(inst != NULL) { + free(inst->myCertFile); + inst->myCertFile = NULL; + free(inst->myPrivKeyFile); + inst->myPrivKeyFile = NULL; + } + } +ENDnewInpInst + + +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad + loadModConf = pModConf; + pModConf->pConf = pConf; + pModConf->pszBindRuleset = NULL; + pModConf->tlslib = NULL; + /* init legacy config variables */ + cs.pszBindRuleset = NULL; + bLegacyCnfModGlobalsPermitted = 1; +ENDbeginCnfLoad + + +BEGINsetModCnf + struct cnfparamvals *pvals = NULL; + int i; +CODESTARTsetModCnf + pvals = nvlstGetParams(lst, &modpblk, NULL); + if(pvals == NULL) { + LogError(0, RS_RET_MISSING_CNFPARAMS, "error processing module " + "config parameters [module(...)]"); + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + if(Debug) { + dbgprintf("module (global) param blk for imrelp:\n"); + cnfparamsPrint(&modpblk, pvals); + } + + for(i = 0 ; i < modpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(modpblk.descr[i].name, "ruleset")) { + loadModConf->pszBindRuleset = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(modpblk.descr[i].name, "tls.tlslib")) { + #if defined(HAVE_RELPENGINESETTLSLIBBYNAME) + loadModConf->tlslib = es_str2cstr(pvals[i].val.d.estr, NULL); + #else + LogError(0, RS_RET_NOT_IMPLEMENTED, + "imrelp warning: parameter tls.tlslib ignored - librelp does not support " + "this API call. Using whatever librelp was compiled with."); + #endif + } else { + dbgprintf("imrelp: program error, non-handled " + "param '%s' in beginCnfLoad\n", modpblk.descr[i].name); + } + } + /* remove all of our legacy module handlers, as they can not used in addition + * the the new-style config method. + */ + bLegacyCnfModGlobalsPermitted = 0; +finalize_it: + if(pvals != NULL) + cnfparamvalsDestruct(pvals, &modpblk); +ENDsetModCnf + +BEGINendCnfLoad +CODESTARTendCnfLoad + if(loadModConf->pszBindRuleset == NULL) { + if((cs.pszBindRuleset == NULL) || (cs.pszBindRuleset[0] == '\0')) { + loadModConf->pszBindRuleset = NULL; + } else { + CHKmalloc(loadModConf->pszBindRuleset = ustrdup(cs.pszBindRuleset)); + } + } else { + if((cs.pszBindRuleset != NULL) && (cs.pszBindRuleset[0] != '\0')) { + LogError(0, RS_RET_DUP_PARAM, "imrelp: ruleset " + "set via legacy directive ignored"); + } + } +finalize_it: + free(cs.pszBindRuleset); + cs.pszBindRuleset = NULL; + loadModConf = NULL; /* done loading */ +ENDendCnfLoad + +BEGINcheckCnf + instanceConf_t *inst; + size_t maxMessageSize; +CODESTARTcheckCnf + for(inst = pModConf->root ; inst != NULL ; inst = inst->next) { + if(inst->pszBindRuleset == NULL && pModConf->pszBindRuleset != NULL) { + CHKmalloc(inst->pszBindRuleset = ustrdup(pModConf->pszBindRuleset)); + } + std_checkRuleset(pModConf, inst); + + + if(inst->maxDataSize == 0) { + /* We set default value for maxDataSize here because + * otherwise the maxMessageSize isn't set. + */ + inst->maxDataSize = glbl.GetMaxLine(loadConf); + } + maxMessageSize = (size_t)glbl.GetMaxLine(loadConf); + if(inst->maxDataSize < maxMessageSize) { + LogError(0, RS_RET_INVALID_PARAMS, "error: " + "maxDataSize (%zu) is smaller than global parameter " + "maxMessageSize (%zu) - global parameter will be used.", + inst->maxDataSize, maxMessageSize); + inst->maxDataSize = maxMessageSize; + } + } + +finalize_it: +ENDcheckCnf + + +BEGINactivateCnfPrePrivDrop + instanceConf_t *inst; +CODESTARTactivateCnfPrePrivDrop + runModConf = pModConf; + for(inst = runModConf->root ; inst != NULL ; inst = inst->next) { + addListner(pModConf, inst); + } + if(pRelpEngine == NULL) { + LogError(0, RS_RET_NO_LSTN_DEFINED, "imrelp: no RELP listener defined, module can not run."); + ABORT_FINALIZE(RS_RET_NO_RUN); + } +finalize_it: +ENDactivateCnfPrePrivDrop + +BEGINactivateCnf +CODESTARTactivateCnf +ENDactivateCnf + + +BEGINfreeCnf + instanceConf_t *inst, *del; + int i; +CODESTARTfreeCnf + for(inst = pModConf->root ; inst != NULL ; ) { + free(inst->pszBindPort); + if (inst->pszBindAddr != NULL) { + free(inst->pszBindAddr); + } + free(inst->pszBindRuleset); + free(inst->pszInputName); + free(inst->pristring); + free(inst->authmode); + for(i = 0 ; i < inst->permittedPeers.nmemb ; ++i) { + free(inst->permittedPeers.name[i]); + } + if(inst->bEnableLstn) { + prop.Destruct(&inst->pInputName); + statsobj.Destruct(&(inst->data.stats)); + } + del = inst; + inst = inst->next; + free(del); + } + free(pModConf->pszBindRuleset); +ENDfreeCnf + +/* This is used to terminate the plugin. Note that the signal handler blocks + * other activity on the thread. As such, it is safe to request the stop. When + * we terminate, relpEngine is called, and it's select() loop interrupted. But + * only *after this function is done*. So we do not have a race! + */ +static void +doSIGTTIN(int __attribute__((unused)) sig) +{ + const int bTerminate = ATOMIC_FETCH_32BIT(&bTerminateInputs, &mutTerminateInputs); + if(bTerminate && (pRelpEngine != NULL)) { + relpEngineSetStop(pRelpEngine); + } +} + + +/* This function is called to gather input. + */ +BEGINrunInput + sigset_t sigSet; + struct sigaction sigAct; +CODESTARTrunInput + /* we want to support non-cancel input termination. To do so, we must signal librelp + * when to stop. As we run on the same thread, we need to register as SIGTTIN handler, + * which will be used to put the terminating condition into librelp. + */ + sigfillset(&sigSet); + pthread_sigmask(SIG_BLOCK, &sigSet, NULL); + sigemptyset(&sigSet); + sigaddset(&sigSet, SIGTTIN); + pthread_sigmask(SIG_UNBLOCK, &sigSet, NULL); + memset(&sigAct, 0, sizeof (sigAct)); + sigemptyset(&sigAct.sa_mask); + sigAct.sa_handler = doSIGTTIN; + sigaction(SIGTTIN, &sigAct, NULL); + + iRet = relpEngineRun(pRelpEngine); +ENDrunInput + + +BEGINwillRun +CODESTARTwillRun +ENDwillRun + + +BEGINafterRun +CODESTARTafterRun + /* do cleanup here */ +ENDafterRun + + +BEGINmodExit +CODESTARTmodExit + struct sigaction newAct; + memset(&newAct, 0, sizeof (newAct)); + sigemptyset(&newAct.sa_mask); + newAct.sa_handler = SIG_IGN; + sigaction(SIGTTIN, &newAct, NULL); + + if(pRelpEngine != NULL) + iRet = relpEngineDestruct(&pRelpEngine); + + /* release objects we used */ + objRelease(statsobj, CORE_COMPONENT); + objRelease(ruleset, CORE_COMPONENT); + objRelease(glbl, CORE_COMPONENT); + objRelease(prop, CORE_COMPONENT); + objRelease(net, LM_NET_FILENAME); +ENDmodExit + + +static rsRetVal +resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal) +{ + free(cs.pszBindRuleset); + cs.pszBindRuleset = NULL; + return RS_RET_OK; +} + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature + if(eFeat == sFEATURENonCancelInputTermination) + iRet = RS_RET_OK; +ENDisCompatibleWithFeature + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_IMOD_QUERIES +CODEqueryEtryPt_STD_CONF2_QUERIES +CODEqueryEtryPt_STD_CONF2_PREPRIVDROP_QUERIES +CODEqueryEtryPt_STD_CONF2_IMOD_QUERIES +CODEqueryEtryPt_STD_CONF2_setModCnf_QUERIES +CODEqueryEtryPt_IsCompatibleWithFeature_IF_OMOD_QUERIES +ENDqueryEtryPt + + +BEGINmodInit() +CODESTARTmodInit + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + pRelpEngine = NULL; + /* request objects we use */ + CHKiRet(objUse(glbl, CORE_COMPONENT)); + CHKiRet(objUse(prop, CORE_COMPONENT)); + CHKiRet(objUse(net, LM_NET_FILENAME)); + CHKiRet(objUse(ruleset, CORE_COMPONENT)); + CHKiRet(objUse(statsobj, CORE_COMPONENT)); + + #ifndef HAVE_RELPSRVSETOVERSIZEMODE + LogMsg(0, RS_RET_OK_WARN, LOG_WARNING, "imrelp: librelp too old, oversizemode " + "defaults to \"abort\""); + #endif + + /* register config file handlers */ + CHKiRet(regCfSysLineHdlr2((uchar*)"inputrelpserverbindruleset", 0, eCmdHdlrGetWord, + NULL, &cs.pszBindRuleset, STD_LOADABLE_MODULE_ID, &bLegacyCnfModGlobalsPermitted)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"inputrelpserverrun", 0, eCmdHdlrGetWord, + addInstance, NULL, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"resetconfigvariables", 1, eCmdHdlrCustomHandler, + resetConfigVariables, NULL, STD_LOADABLE_MODULE_ID)); +ENDmodInit |