diff options
Diffstat (limited to '')
| -rw-r--r-- | plugins/imjournal/Makefile.am | 12 | ||||
| -rw-r--r-- | plugins/imjournal/Makefile.in | 816 | ||||
| -rw-r--r-- | plugins/imjournal/dummy.c | 171 | ||||
| -rw-r--r-- | plugins/imjournal/imjournal.c | 1496 |
4 files changed, 2495 insertions, 0 deletions
diff --git a/plugins/imjournal/Makefile.am b/plugins/imjournal/Makefile.am new file mode 100644 index 0000000..5306130 --- /dev/null +++ b/plugins/imjournal/Makefile.am @@ -0,0 +1,12 @@ +pkglib_LTLIBRARIES = imjournal.la + +if IMJOURNAL_USE_DUMMY +imjournal_la_SOURCES = dummy.c +imjournal_la_CPPFLAGS = -I$(top_srcdir) $(PTHREADS_CFLAGS) $(RSRT_CFLAGS) -D MODNAME=imjournal +imjournal_la_LDFLAGS = -module -avoid-version +else +imjournal_la_SOURCES = imjournal.c +imjournal_la_CPPFLAGS = $(PTHREADS_CFLAGS) $(RSRT_CFLAGS) $(LIBSYSTEMD_JOURNAL_CFLAGS) +imjournal_la_LDFLAGS = -module -avoid-version +imjournal_la_LIBADD = $(LIBSYSTEMD_JOURNAL_LIBS) +endif diff --git a/plugins/imjournal/Makefile.in b/plugins/imjournal/Makefile.in new file mode 100644 index 0000000..ff4bd52 --- /dev/null +++ b/plugins/imjournal/Makefile.in @@ -0,0 +1,816 @@ +# 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; 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\ + uninstall-am uninstall-pkglibLTLIBRARIES + +.PRECIOUS: Makefile + + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/plugins/imjournal/dummy.c b/plugins/imjournal/dummy.c new file mode 100644 index 0000000..fe8c249 --- /dev/null +++ b/plugins/imjournal/dummy.c @@ -0,0 +1,171 @@ +/* a dummy module to be loaded if we cannot build this module, but + * configure required it to be "optional". + * + * Copyright 2020 Rainer Gerhards and Adiscon GmbH. + * + * This file is part of rsyslog. + * + * Licensed 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 + * -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 "rsyslog.h" +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <assert.h> +#include <signal.h> +#include <errno.h> +#include <unistd.h> +#include <stdint.h> +#include <pthread.h> +#include "conf.h" +#include "syslogd-types.h" +#include "srUtils.h" +#include "template.h" +#include "module-template.h" +#include "errmsg.h" +#include "parserif.h" + +#define MODULE_NAME(x) #x + +MODULE_TYPE_OUTPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME(MODULE_NAME(MODNAME)) + + +DEF_OMOD_STATIC_DATA + +/* config variables */ +typedef struct _instanceData { + char *dummy; +} instanceData; + +typedef struct wrkrInstanceData { + instanceData *pData; +} wrkrInstanceData_t; + +struct modConfData_s { +}; + +/* modConf ptr to use for the current load process */ +static modConfData_t *loadModConf = NULL; +/* modConf ptr to use for the current exec process */ +static modConfData_t *runModConf = NULL; + + + + +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad + loadModConf = pModConf; +ENDbeginCnfLoad + +BEGINendCnfLoad +CODESTARTendCnfLoad +ENDendCnfLoad + +BEGINcheckCnf +CODESTARTcheckCnf +ENDcheckCnf + +BEGINactivateCnf +CODESTARTactivateCnf + runModConf = pModConf; +ENDactivateCnf + +BEGINfreeCnf +CODESTARTfreeCnf +ENDfreeCnf + + +BEGINcreateWrkrInstance +CODESTARTcreateWrkrInstance +ENDcreateWrkrInstance + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature +ENDisCompatibleWithFeature + + +BEGINfreeInstance +CODESTARTfreeInstance +ENDfreeInstance + + +BEGINfreeWrkrInstance +CODESTARTfreeWrkrInstance +ENDfreeWrkrInstance + + +BEGINsetModCnf +CODESTARTsetModCnf + (void) lst; + parser_errmsg("%s is an optional module which could not be built on your platform " + "please remove it from the configuration or upgrade your platform", MODULE_NAME(MODNAME)); +ENDsetModCnf + + +BEGINnewActInst +CODESTARTnewActInst + (void) pData; + (void) ppModData; + parser_errmsg("%s is an optional module which could not be built on your platform " + "please remove it from the configuration or upgrade your platform", MODULE_NAME(MODNAME)); +ENDnewActInst + + +BEGINdbgPrintInstInfo +CODESTARTdbgPrintInstInfo +ENDdbgPrintInstInfo + + +BEGINtryResume +CODESTARTtryResume +ENDtryResume + + +BEGINdoAction_NoStrings +CODESTARTdoAction + (void) pMsgData; +ENDdoAction + + +NO_LEGACY_CONF_parseSelectorAct + + +BEGINmodExit +CODESTARTmodExit +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_OMOD_QUERIES +CODEqueryEtryPt_STD_OMOD8_QUERIES +CODEqueryEtryPt_STD_CONF2_setModCnf_QUERIES +CODEqueryEtryPt_STD_CONF2_OMOD_QUERIES +CODEqueryEtryPt_STD_CONF2_QUERIES +ENDqueryEtryPt + + +BEGINmodInit() +CODESTARTmodInit + /* we only support the current interface specification */ + *ipIFVersProvided = CURR_MOD_IF_VERSION; +CODEmodInit_QueryRegCFSLineHdlr + dbgprintf("dummy module compiled with rsyslog version %s.\n", VERSION); +ENDmodInit diff --git a/plugins/imjournal/imjournal.c b/plugins/imjournal/imjournal.c new file mode 100644 index 0000000..cda9b4b --- /dev/null +++ b/plugins/imjournal/imjournal.c @@ -0,0 +1,1496 @@ +/* The systemd journal import module + * + * To test under Linux: + * emmit log message into systemd journal + * + * Copyright (C) 2008-2019 Adiscon GmbH + * + * This file is part of rsyslog. + * + * Licensed 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 + * -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 "rsyslog.h" +#include <stdio.h> +#include <dirent.h> +#include <assert.h> +#include <string.h> +#include <stdarg.h> +#include <ctype.h> +#include <stdlib.h> +#include <time.h> +#include <sys/poll.h> +#include <sys/socket.h> +#include <sys/stat.h> +#include <sys/types.h> +#include <unistd.h> +#include <errno.h> +#include <systemd/sd-journal.h> +#include <fcntl.h> + +#include "dirty.h" +#include "cfsysline.h" +#include "obj.h" +#include "msg.h" +#include "module-template.h" +#include "datetime.h" +#include "net.h" +#include "glbl.h" +#include "statsobj.h" +#include "ruleset.h" +#include "parser.h" +#include "prop.h" +#include "errmsg.h" +#include "srUtils.h" +#include "unicode-helper.h" +#include "ratelimit.h" + + +MODULE_TYPE_INPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("imjournal") + +/* Module static data */ +DEF_IMOD_STATIC_DATA +DEFobjCurrIf(datetime) +DEFobjCurrIf(glbl) +DEFobjCurrIf(parser) +DEFobjCurrIf(prop) +DEFobjCurrIf(net) +DEFobjCurrIf(ruleset) +DEFobjCurrIf(statsobj) + +/* Module static data */ +typedef struct journal_etry_s { + pthread_t tid; /* the worker's thread ID */ + ruleset_t *pBindRuleset; + char* stateFile; + struct journalContext_s *journalContext; + struct journal_etry_s *next; +} journal_etry_t; +static journal_etry_t *journal_root = NULL; +static int n_journal = 0; + +struct modConfData_s { + rsconf_t *pConf; + instanceConf_t *root, *tail; +}; + +static struct configSettings_s { + char *stateFile; + int fCreateMode; /* default mode to use when creating new files, e.g. stateFile */ + int iPersistStateInterval; + unsigned int ratelimitInterval; + unsigned int ratelimitBurst; + int bIgnorePrevious; + int bIgnoreNonValidStatefile; + int iDfltSeverity; + int iDfltFacility; + int bUseJnlPID; + char *usePid; + int bWorkAroundJournalBug; /* deprecated, left for backwards compatibility only */ + int bFsync; + int bRemote; + char *dfltTag; +} cs; + +static rsRetVal facilityHdlr(uchar **pp, void *pVal); + +/* module-global parameters */ +static struct cnfparamdescr modpdescr[] = { + { "statefile", eCmdHdlrGetWord, 0 }, + { "filecreatemode", eCmdHdlrFileCreateMode, 0 }, + { "ratelimit.interval", eCmdHdlrInt, 0 }, + { "ratelimit.burst", eCmdHdlrInt, 0 }, + { "persiststateinterval", eCmdHdlrInt, 0 }, + { "ignorepreviousmessages", eCmdHdlrBinary, 0 }, + { "ignorenonvalidstatefile", eCmdHdlrBinary, 0 }, + { "defaultseverity", eCmdHdlrSeverity, 0 }, + { "defaultfacility", eCmdHdlrString, 0 }, + { "usepidfromsystem", eCmdHdlrBinary, 0 }, + { "usepid", eCmdHdlrString, 0 }, + { "workaroundjournalbug", eCmdHdlrBinary, 0 }, + { "fsync", eCmdHdlrBinary, 0 }, + { "remote", eCmdHdlrBinary, 0 }, + { "defaulttag", eCmdHdlrGetWord, 0 } +}; +static struct cnfparamblk modpblk = + { CNFPARAMBLK_VERSION, + sizeof(modpdescr)/sizeof(struct cnfparamdescr), + modpdescr + }; + +/* input instance parameters */ +static struct cnfparamdescr inppdescr[] = { + { "ruleset", eCmdHdlrString, 0 }, + { "main", eCmdHdlrBinary, 0 }, +}; +static struct cnfparamblk inppblk = + { CNFPARAMBLK_VERSION, + sizeof(inppdescr)/sizeof(struct cnfparamdescr), + inppdescr + }; + +struct instanceConf_s { + struct instanceConf_s *next; + char *stateFile; + uchar *pszBindRuleset; + ruleset_t *pBindRuleset; /* ruleset to bind listener to (use system default if unspecified) */ + int bMain; +}; + +#include "im-helper.h" /* must be included AFTER the type definitions! */ + +#define DFLT_persiststateinterval 10 +#define DFLT_SEVERITY pri2sev(LOG_NOTICE) +#define DFLT_FACILITY pri2fac(LOG_USER) +#define DFLT_TAG "journal" + +static int bLegacyCnfModGlobalsPermitted = 1;/* are legacy module-global config parameters permitted? */ + +static prop_t *pInputName = NULL; +/* there is only one global inputName for all messages generated by this module */ +static prop_t *pLocalHostIP = NULL; /* a pseudo-constant propterty for 127.0.0.1 */ +static const char *pidFieldName; /* read-only after startup */ +static int bPidFallBack; +static ratelimit_t *ratelimiter = NULL; +static struct { + statsobj_t *stats; + STATSCOUNTER_DEF(ctrSubmitted, mutCtrSubmitted) + STATSCOUNTER_DEF(ctrRead, mutCtrRead); + STATSCOUNTER_DEF(ctrDiscarded, mutCtrDiscarded); + STATSCOUNTER_DEF(ctrFailed, mutCtrFailed); + STATSCOUNTER_DEF(ctrPollFailed, mutCtrPollFailed); + STATSCOUNTER_DEF(ctrRotations, mutCtrRotations); + STATSCOUNTER_DEF(ctrRecoveryAttempts, mutCtrRecoveryAttempts); + uint64 ratelimitDiscardedInInterval; + uint64 diskUsageBytes; +} statsCounter; +struct journalContext_s { /* structure encapsulating all the journald_API-related stuff */ + sd_journal *j; /* main object encapsulating journal for us, has to be used in every sd_journal*() call */ + sbool reloaded; /* we have reloaded journal after detecting rotation */ + sbool atHead; /* true if we are at start of journal (no seek was done) */ + char *cursor; /* should point to last valid journald entry we processed */ +}; + +#define MAX_JOURNAL 8 +static struct journalContext_s journalContextArray[MAX_JOURNAL] = { + {NULL, 0, 1, NULL}, + {NULL, 0, 1, NULL}, + {NULL, 0, 1, NULL}, + {NULL, 0, 1, NULL}, + {NULL, 0, 1, NULL}, + {NULL, 0, 1, NULL}, + {NULL, 0, 1, NULL}, + {NULL, 0, 1, NULL}, +}; +static modConfData_t *loadModConf = NULL;/* modConf ptr to use for the current load process */ +static modConfData_t *runModConf = NULL;/* modConf ptr to use for run process */ + +#define J_PROCESS_PERIOD 1024 /* Call sd_journal_process() every 1,024 records */ + +static rsRetVal persistJournalState(struct journalContext_s *journalContext, char* stateFile); +static rsRetVal loadJournalState(struct journalContext_s *journalContext, char* stateFile); + +static rsRetVal openJournal(struct journalContext_s *journalContext) { + + int r; + DEFiRet; + + if (journalContext->j) { + LogMsg(0, RS_RET_OK_WARN, LOG_WARNING, "imjournal: opening journal when already opened.\n"); + } + if ((r = sd_journal_open(&journalContext->j, cs.bRemote? 0 : SD_JOURNAL_LOCAL_ONLY)) < 0) { + LogError(-r, RS_RET_IO_ERROR, "imjournal: sd_journal_open() failed"); + iRet = RS_RET_IO_ERROR; + } + if ((r = sd_journal_set_data_threshold(journalContext->j, glbl.GetMaxLine(runModConf->pConf))) < 0) { + LogError(-r, RS_RET_IO_ERROR, "imjournal: sd_journal_set_data_threshold() failed"); + iRet = RS_RET_IO_ERROR; + } + journalContext->atHead = 1; + RETiRet; +} + +/* trySave shoulod only be true if there is no journald error preceeding this call */ +static void closeJournal(struct journalContext_s *journalContext) { + if (!journalContext->j) { + LogMsg(0, RS_RET_OK_WARN, LOG_WARNING, "imjournal: closing NULL journal.\n"); + } + sd_journal_close(journalContext->j); + journalContext->j = NULL; /* setting to NULL here as journald API will not do that for us... */ +} + +static int journalGetData(struct journalContext_s *journalContext, const char *field, const void **data, size_t *length) +{ + int ret; + + ret = sd_journal_get_data(journalContext->j, field, data, length); + if (ret == -EADDRNOTAVAIL) { + LogError(-ret, RS_RET_ERR, "imjournal: Tried to get data without a 'next' call.\n"); + if ((ret = sd_journal_next(journalContext->j)) < 0) { + LogError(-ret, RS_RET_ERR, "imjournal: sd_journal_next() failed\n"); + } else { + ret = sd_journal_get_data(journalContext->j, field, data, length); + } + } + + return ret; +} + + +/* ugly workaround to handle facility numbers; values + * derived from names need to be eight times smaller, + * i.e.: 0..23 + */ +static rsRetVal facilityHdlr(uchar **pp, void *pVal) +{ + DEFiRet; + char *p; + + skipWhiteSpace(pp); + p = (char *) *pp; + + if (isdigit((int) *p)) { + *((int *) pVal) = (int) strtol(p, (char **) pp, 10); + } else { + int len; + syslogName_t *c; + + for (len = 0; p[len] && !isspace((int) p[len]); len++) + /* noop */; + for (c = syslogFacNames; c->c_name; c++) { + if (!strncasecmp(p, (char *) c->c_name, len)) { + *((int *) pVal) = pri2fac(c->c_val); + break; + } + } + *pp += len; + } + + RETiRet; +} + + +/* Currently just replaces '\0' with ' '. Not doing so would cause + * the value to be truncated. New space is allocated for the resulting + * string. + */ +static rsRetVal +sanitizeValue(const char *in, size_t len, char **out) +{ + char *buf, *p; + DEFiRet; + + CHKmalloc(p = buf = malloc(len + 1)); + memcpy(buf, in, len); + buf[len] = '\0'; + + while ((p = memchr(p, '\0', len + buf - p)) != NULL) { + *p++ = ' '; + } + + *out = buf; + +finalize_it: + RETiRet; +} + + +/* Read JSON part of single journald message and return it as JSON object + */ +static rsRetVal +readJSONfromJournalMsg(struct journalContext_s *journalContext, struct fjson_object **json) +{ + DEFiRet; + const void *get; + const void *equal_sign; + struct fjson_object *jval; + size_t l; + long prefixlen = 0; + + CHKmalloc(*json = fjson_object_new_object()); + + SD_JOURNAL_FOREACH_DATA(journalContext->j, get, l) { + char *data; + char *name; + + /* locate equal sign, this is always present */ + equal_sign = memchr(get, '=', l); + + /* ... but we know better than to trust the specs */ + if (equal_sign == NULL) { + LogError(0, RS_RET_ERR, "SD_JOURNAL_FOREACH_DATA()" + "returned a malformed field (has no '='): '%s'", (char*)get); + continue; /* skip the entry */ + } + + /* get length of journal data prefix */ + prefixlen = ((char *)equal_sign - (char *)get); + + CHKmalloc(name = strndup(get, prefixlen)); + + prefixlen++; /* remove '=' */ + + CHKiRet_Hdlr(sanitizeValue(((const char *)get) + prefixlen, l - prefixlen, &data)) { + free (name); + FINALIZE; + } + + /* and save them to json object */ + jval = fjson_object_new_string((char *)data); + fjson_object_object_add(*json, name, jval); + free (data); + free (name); + } +finalize_it: + RETiRet; +} + + +/* Try to obtain current journald cursor and save it to journalContext struct. + */ +static rsRetVal +updateJournalCursor(struct journalContext_s *journalContext) +{ + DEFiRet; + char *c = NULL; + int r; + + if ((r = sd_journal_get_cursor(journalContext->j, &c)) < 0) { + LogError(-r, RS_RET_ERR, "imjournal: Could not get journald cursor!\n"); + ABORT_FINALIZE(RS_RET_ERR); + } + /* save journal cursor (at this point we can be sure it is valid) */ + free(journalContext->cursor); + journalContext->cursor = c; +finalize_it: + RETiRet; +} + + +/* enqueue the the journal message into the message queue. + * The provided msg string is not freed - thus must be done + * by the caller. + */ +static rsRetVal +enqMsg(uchar *msg, uchar *pszTag, int iFacility, int iSeverity, struct timeval *tp, struct fjson_object *json, +int sharedJsonProperties, ruleset_t *pBindRuleset) +{ + struct syslogTime st; + smsg_t *pMsg; + size_t len; + DEFiRet; + + assert(msg != NULL); + assert(pszTag != NULL); + + if(tp == NULL) { + CHKiRet(msgConstruct(&pMsg)); + } else { + datetime.timeval2syslogTime(tp, &st, TIME_IN_LOCALTIME); + CHKiRet(msgConstructWithTime(&pMsg, &st, tp->tv_sec)); + } + MsgSetFlowControlType(pMsg, eFLOWCTL_LIGHT_DELAY); + MsgSetInputName(pMsg, pInputName); + len = strlen((char*)msg); + MsgSetRawMsg(pMsg, (char*)msg, len); + if(len > 0) + parser.SanitizeMsg(pMsg); + MsgSetMSGoffs(pMsg, 0); /* we do not have a header... */ + MsgSetRcvFrom(pMsg, glbl.GetLocalHostNameProp()); + MsgSetRcvFromIP(pMsg, pLocalHostIP); + MsgSetHOSTNAME(pMsg, glbl.GetLocalHostName(), ustrlen(glbl.GetLocalHostName())); + MsgSetTAG(pMsg, pszTag, ustrlen(pszTag)); + if (pBindRuleset != NULL) { + MsgSetRuleset(pMsg, pBindRuleset); + } + pMsg->iFacility = iFacility; + pMsg->iSeverity = iSeverity; + + if(json != NULL) { + msgAddJSON(pMsg, (uchar*)"!", json, 0, sharedJsonProperties); + } + + CHKiRet(ratelimitAddMsg(ratelimiter, NULL, pMsg)); + STATSCOUNTER_INC(statsCounter.ctrSubmitted, statsCounter.mutCtrSubmitted); + +finalize_it: + if (iRet == RS_RET_DISCARDMSG) { + STATSCOUNTER_INC(statsCounter.ctrDiscarded, statsCounter.mutCtrDiscarded); + } else if (iRet != RS_RET_OK) { + LogError(0, RS_RET_ERR, "imjournal: error during enqMsg().\n"); + } + + RETiRet; +} + + +/* Read journal log while data are available, each read() reads one journald record. + */ +static rsRetVal +readjournal(struct journalContext_s *journalContext, ruleset_t *pBindRuleset) +{ + DEFiRet; + + struct timeval tv; + uint64_t timestamp; + + struct fjson_object *json = NULL; + int r; + + /* Information from messages */ + char *message = NULL; + char *sys_iden; + char *sys_iden_help = NULL; + + const void *get; + const void *pidget; + size_t length; + size_t pidlength; + + int severity = cs.iDfltSeverity; + int facility = cs.iDfltFacility; + + /* Get message text */ + if (journalGetData(journalContext, "MESSAGE", &get, &length) < 0) { + CHKmalloc(message = strdup("")); + } else { + CHKiRet(sanitizeValue(((const char *)get) + 8, length - 8, &message)); + } + STATSCOUNTER_INC(statsCounter.ctrRead, statsCounter.mutCtrRead); + + /* Get message severity ("priority" in journald's terminology) */ + if (journalGetData(journalContext, "PRIORITY", &get, &length) >= 0) { + if (length == 10) { + severity = ((char *)get)[9] - '0'; + if (severity < 0 || 7 < severity) { + LogError(0, RS_RET_ERR, "imjournal: the value of the 'PRIORITY' field is " + "out of bounds: %d, resetting", severity); + severity = cs.iDfltSeverity; + } + } else { + LogError(0, RS_RET_ERR, "The value of the 'PRIORITY' field has an " + "unexpected length: %zu\n", length); + } + } + + /* Get syslog facility */ + if (journalGetData(journalContext, "SYSLOG_FACILITY", &get, &length) >= 0) { + // Note: the journal frequently contains invalid facilities! + if (length == 17 || length == 18) { + facility = ((char *)get)[16] - '0'; + if (length == 18) { + facility *= 10; + facility += ((char *)get)[17] - '0'; + } + if (facility < 0 || 23 < facility) { + DBGPRINTF("The value of the 'FACILITY' field is " + "out of bounds: %d, resetting\n", facility); + facility = cs.iDfltFacility; + } + } else { + DBGPRINTF("The value of the 'FACILITY' field has an " + "unexpected length: %zu value: '%s'\n", length, (const char*)get); + } + } + + /* Get message identifier, client pid and add ':' */ + if (journalGetData(journalContext, "SYSLOG_IDENTIFIER", &get, &length) >= 0) { + CHKiRet(sanitizeValue(((const char *)get) + 18, length - 18, &sys_iden)); + } else if (journalGetData(journalContext, "_COMM", &get, &length) >= 0) { + CHKiRet(sanitizeValue(((const char *)get) + 6, length - 6, &sys_iden)); + } else { + CHKmalloc(sys_iden = strdup(cs.dfltTag)); + } + + /* trying to get PID, default is "SYSLOG_PID" property */ + if (journalGetData(journalContext, pidFieldName, &pidget, &pidlength) >= 0) { + char *sys_pid; + int val_ofs; + + val_ofs = strlen(pidFieldName) + 1; /* name + '=' */ + CHKiRet_Hdlr(sanitizeValue(((const char *)pidget) + val_ofs, pidlength - val_ofs, &sys_pid)) { + free (sys_iden); + FINALIZE; + } + r = asprintf(&sys_iden_help, "%s[%s]:", sys_iden, sys_pid); + free (sys_pid); + } else { + /* this is fallback, "SYSLOG_PID" doesn't exist so trying to get "_PID" property */ + if (bPidFallBack && journalGetData(journalContext, "_PID", &pidget, &pidlength) >= 0) { + char *sys_pid; + int val_ofs; + + val_ofs = strlen("_PID") + 1; /* name + '=' */ + CHKiRet_Hdlr(sanitizeValue(((const char *)pidget) + val_ofs, pidlength - val_ofs, &sys_pid)) { + free (sys_iden); + FINALIZE; + } + r = asprintf(&sys_iden_help, "%s[%s]:", sys_iden, sys_pid); + free (sys_pid); + } else { + /* there is no PID property available */ + r = asprintf(&sys_iden_help, "%s:", sys_iden); + } + } + + free (sys_iden); + + if (-1 == r) { + STATSCOUNTER_INC(statsCounter.ctrFailed, statsCounter.mutCtrFailed); + ABORT_FINALIZE(RS_RET_OUT_OF_MEMORY); + } + + CHKiRet(readJSONfromJournalMsg(journalContext, &json)); + + /* calculate timestamp */ + if (sd_journal_get_realtime_usec(journalContext->j, ×tamp) >= 0) { + tv.tv_sec = timestamp / 1000000; + tv.tv_usec = timestamp % 1000000; + } + + iRet = updateJournalCursor(journalContext); + + /* submit message */ + enqMsg((uchar *)message, (uchar *) sys_iden_help, facility, severity, &tv, json, 0, pBindRuleset); + +finalize_it: + free(sys_iden_help); + free(message); + RETiRet; +} + + +/* This function saves journal cursor into state file. + * It must be checked that stateFile is configured prior to calling this. + */ +static rsRetVal +persistJournalState(struct journalContext_s *journalContext, char* stateFile) +{ + DEFiRet; + char tmp_sf[MAXFNAME]; + int fd = -1; + size_t len; + ssize_t wr_ret; + + DBGPRINTF("Persisting journal position, cursor: %s, at head? %d\n", + journalContext->cursor, journalContext->atHead); + + /* first check that we have valid cursor */ + if (!journalContext->cursor) { + DBGPRINTF("Journal cursor is not valid, ok...\n"); + ABORT_FINALIZE(RS_RET_OK); + } + + /* we create a temporary name by adding a ".tmp" + * suffix to the end of our state file's name + * + * we use snprintf() to safely honor the boundaries + * of the temporary state file name buffer by using + * a precision specifier, which will limit the number + * of bytes taken from stateFile to what will fit + * + * TODO: figure out a better way to avoid the PATH_MAX + * problem. The truncated stateFile with .tmp at the + * end is not optimal + */ +#define IM_SF_TMP_SUFFIX ".tmp" + snprintf(tmp_sf, sizeof(tmp_sf), "%.*s%s", + /* this calculates the max size for state file name, note that + * sizeof() NOT -1 is intentional - it reserves spaces for the + * NUL terminator. + */ + (int)(sizeof(tmp_sf) - sizeof(IM_SF_TMP_SUFFIX)), + stateFile, IM_SF_TMP_SUFFIX); + + fd = open((char*) tmp_sf, O_WRONLY|O_CREAT|O_CLOEXEC, cs.fCreateMode); + if (fd == -1) { + LogError(errno, RS_RET_FILE_OPEN_ERROR, "imjournal: open() failed for path: '%s'", tmp_sf); + ABORT_FINALIZE(RS_RET_FILE_OPEN_ERROR); + } + + len = strlen(journalContext->cursor); + wr_ret = write(fd, journalContext->cursor, len); + if (wr_ret != (ssize_t)len) { + LogError(errno, RS_RET_IO_ERROR, "imjournal: failed to save cursor to: '%s'," + "write returned %zd, expected %zu", cs.stateFile, wr_ret, len); + ABORT_FINALIZE(RS_RET_IO_ERROR); + } + + /* change the name of the file to the configured one */ + if (rename(tmp_sf, stateFile) < 0) { + LogError(errno, iRet, "imjournal: rename() failed for new path: '%s'", stateFile); + ABORT_FINALIZE(RS_RET_IO_ERROR); + } + + if (cs.bFsync) { + if (fsync(fd) != 0) { + LogError(errno, RS_RET_IO_ERROR, "imjournal: fsync on '%s' failed", stateFile); + ABORT_FINALIZE(RS_RET_IO_ERROR); + } + /* In order to guarantee physical write we need to force parent sync as well */ + DIR *wd; + if (!(wd = opendir((char *)glbl.GetWorkDir(runModConf->pConf)))) { + LogError(errno, RS_RET_IO_ERROR, "imjournal: failed to open '%s' directory", + glbl.GetWorkDir(runModConf->pConf)); + ABORT_FINALIZE(RS_RET_IO_ERROR); + } + if (fsync(dirfd(wd)) != 0) { + LogError(errno, RS_RET_IO_ERROR, "imjournal: fsync on '%s' failed", + glbl.GetWorkDir(runModConf->pConf)); + ABORT_FINALIZE(RS_RET_IO_ERROR); + } + + closedir(wd); + } + + DBGPRINTF("Persisted journal to '%s'\n", stateFile); + +finalize_it: + if (fd != -1) { + if (close(fd) == -1) { + LogError(errno, RS_RET_IO_ERROR, "imjournal: close() failed for path: '%s'", tmp_sf); + iRet = RS_RET_IO_ERROR; + } + } + RETiRet; +} + + +static rsRetVal skipOldMessages(struct journalContext_s *journalContext); + +static rsRetVal +handleRotation(struct journalContext_s *journalContext, char* stateFile) +{ + DEFiRet; + int r; + + LogMsg(0, RS_RET_OK, LOG_NOTICE, "imjournal: journal files changed, reloading...\n"); + STATSCOUNTER_INC(statsCounter.ctrRotations, statsCounter.mutCtrRotations); + closeJournal(journalContext); + + iRet = openJournal(journalContext); + if (iRet != RS_RET_OK) { + ABORT_FINALIZE(RS_RET_ERR); + } + + /* outside error scenarios we should always have a cursor available at this point */ + if (!journalContext->cursor) + { + if (stateFile) { + iRet = loadJournalState(journalContext, stateFile); + } + else if (cs.bIgnorePrevious) { + /* Seek to the very end of the journal and ignore all older messages. */ + iRet = skipOldMessages(journalContext); + } + FINALIZE; + } + + if (sd_journal_seek_cursor(journalContext->j, journalContext->cursor) != 0) { + LogError(0, RS_RET_ERR, "imjournal: " + "couldn't seek to cursor `%s'\n", journalContext->cursor); + iRet = RS_RET_ERR; + } + journalContext->atHead = 0; + /* Need to advance because cursor points at last processed message */ + if ((r = sd_journal_next(journalContext->j)) < 0) { + LogError(-r, RS_RET_ERR, "imjournal: sd_journal_next() failed"); + iRet = RS_RET_ERR; + } + +finalize_it: + journalContext->reloaded = 1; + RETiRet; +} + +#define POLL_TIMEOUT 900000 /* timeout for poll is 900ms */ + +static rsRetVal +pollJournal(struct journalContext_s *journalContext, char* stateFile) +{ + DEFiRet; + int err; + + err = sd_journal_wait(journalContext->j, POLL_TIMEOUT); + if (err == SD_JOURNAL_INVALIDATE && !journalContext->reloaded) { + CHKiRet(handleRotation(journalContext, stateFile)); + } + else { + journalContext->reloaded = 0; + } + +finalize_it: + RETiRet; +} + + +static rsRetVal +skipOldMessages(struct journalContext_s *journalContext) +{ + int r; + DEFiRet; + + if ((r = sd_journal_seek_tail(journalContext->j)) < 0) { + LogError(-r, RS_RET_ERR, + "imjournal: sd_journal_seek_tail() failed"); + ABORT_FINALIZE(RS_RET_ERR); + } + journalContext->atHead = 0; + if ((r = sd_journal_previous(journalContext->j)) < 0) { + LogError(-r, RS_RET_ERR, + "imjournal: sd_journal_previous() failed"); + ABORT_FINALIZE(RS_RET_ERR); + } + +finalize_it: + RETiRet; +} + +/* This function loads a journal cursor from the state file. + */ +static rsRetVal +loadJournalState(struct journalContext_s *journalContext, char* stateFile) +{ + DEFiRet; + int r; + FILE *r_sf; + + DBGPRINTF("Loading journal position, at head? %d, reloaded? %d\n", + journalContext->atHead, journalContext->reloaded); + + /* if state file not exists (on very first run), skip */ + if (access(stateFile, F_OK|R_OK) == -1 && errno == ENOENT) { + if (cs.bIgnorePrevious) { + /* Seek to the very end of the journal and ignore all older messages. */ + skipOldMessages(journalContext); + } + LogMsg(errno, RS_RET_FILE_NOT_FOUND, LOG_NOTICE, "imjournal: No statefile exists, " + "%s will be created (ignore if this is first run)", stateFile); + FINALIZE; + } + + if ((r_sf = fopen(stateFile, "rb")) != NULL) { + char readCursor[128 + 1]; + if (fscanf(r_sf, "%128s\n", readCursor) != EOF) { + if (sd_journal_seek_cursor(journalContext->j, readCursor) != 0) { + LogError(0, RS_RET_ERR, "imjournal: " + "couldn't seek to cursor `%s'\n", readCursor); + iRet = RS_RET_ERR; + } else { + journalContext->atHead = 0; + char * tmp_cursor = NULL; + sd_journal_next(journalContext->j); + /* + * This is resolving the situation when system is after reboot and boot_id + * doesn't match so cursor pointing into "future". + * Usually sd_journal_next jump to head of journal due to journal aproximation, + * but when system time goes backwards and cursor is still + invalid, rsyslog stops logging. + * We use sd_journal_get_cursor to validate our cursor. + * When cursor is invalid we are trying to jump to the head of journal + * This problem with time should not affect persistent journal, + * but if cursor has been intentionally compromised it could stop logging even + * with persistent journal. + * */ + if ((r = sd_journal_get_cursor(journalContext->j, &tmp_cursor)) < 0) { + LogError(-r, RS_RET_IO_ERROR, "imjournal: " + "loaded invalid cursor, seeking to the head of journal\n"); + if ((r = sd_journal_seek_head(journalContext->j)) < 0) { + LogError(-r, RS_RET_ERR, "imjournal: " + "sd_journal_seek_head() failed, when cursor is invalid\n"); + iRet = RS_RET_ERR; + } + journalContext->atHead = 1; + } + free(tmp_cursor); + } + } else { + LogError(0, RS_RET_IO_ERROR, "imjournal: " + "fscanf on state file `%s' failed\n", stateFile); + iRet = RS_RET_IO_ERROR; + } + + fclose(r_sf); + + if (iRet != RS_RET_OK && cs.bIgnoreNonValidStatefile) { + /* ignore state file errors */ + iRet = RS_RET_OK; + LogError(0, NO_ERRCODE, "imjournal: ignoring invalid state file %s", stateFile); + if (cs.bIgnorePrevious) { + skipOldMessages(journalContext); + } + } + } else { + LogError(0, RS_RET_FOPEN_FAILURE, "imjournal: open on state file `%s' failed\n", stateFile); + if (cs.bIgnorePrevious) { + /* Seek to the very end of the journal and ignore all older messages. */ + skipOldMessages(journalContext); + } + } + +finalize_it: + RETiRet; +} + +static void +tryRecover(struct journalContext_s *journalContext) { + LogMsg(0, RS_RET_OK, LOG_INFO, "imjournal: trying to recover from journal error"); + STATSCOUNTER_INC(statsCounter.ctrRecoveryAttempts, statsCounter.mutCtrRecoveryAttempts); + closeJournal(journalContext); + srSleep(0, 200000); // do not hammer machine with too-frequent retries + openJournal(journalContext); +} + +static rsRetVal +addListner(instanceConf_t *inst, u_int8_t index) +{ + DEFiRet; + if (index >= MAX_JOURNAL) { + iRet = RS_RET_NO_MORE_DATA; + RETiRet; + } + + journal_etry_t *etry; + CHKmalloc(etry = (journal_etry_t*) calloc(1, sizeof(journal_etry_t))); + etry->journalContext = &journalContextArray[index]; + if (inst) { + etry->pBindRuleset = inst->pBindRuleset; + etry->stateFile = inst->stateFile; + } + etry->next = journal_root; + journal_root = etry; + ++n_journal; + +finalize_it: + if(iRet != RS_RET_OK) { + LogError(0, NO_ERRCODE, "imjournal: error %d trying to add listener", iRet); + free(etry); + } + RETiRet; +} + + +static rsRetVal +doRun(journal_etry_t const* etry) +{ + DEFiRet; + uint64_t count = 0; + char* stateFile = cs.stateFile; + if (etry->stateFile) { + stateFile = etry->stateFile; + } + + if (stateFile) { + /* Load our position in the journal from the state file. */ + CHKiRet(loadJournalState(etry->journalContext, stateFile)); + } else if (cs.bIgnorePrevious) { + /* Seek to the very end of the journal and ignore all older messages. */ + skipOldMessages(etry->journalContext); + } + + if (cs.dfltTag == NULL) { + cs.dfltTag = strdup(DFLT_TAG); + } + + if (cs.usePid && (strcmp(cs.usePid, "system") == 0)) { + pidFieldName = "_PID"; + bPidFallBack = 0; + } else if (cs.usePid && (strcmp(cs.usePid, "syslog") == 0)) { + pidFieldName = "SYSLOG_PID"; + bPidFallBack = 0; + } else { + pidFieldName = "SYSLOG_PID"; + bPidFallBack = 1; + if (cs.usePid && (strcmp(cs.usePid, "both") != 0)) { + LogError(0, RS_RET_OK, "option \"usepid\"" + " should contain one of system|syslog|both and no '%s'",cs.usePid); + } + } + + /* this is an endless loop - it is terminated when the thread is + * signalled to do so. This, however, is handled by the framework. + */ + while (glbl.GetGlobalInputTermState() == 0) { + int r; + + r = sd_journal_next(etry->journalContext->j); + if (r < 0) { + LogError(-r, RS_RET_ERR, "imjournal: sd_journal_next() failed"); + tryRecover(etry->journalContext); + continue; + } + + if (r == 0) { + if (etry->journalContext->atHead) { + LogMsg(0, RS_RET_OK, LOG_WARNING, "imjournal: " + "Journal indicates no msgs when positioned at head.\n"); + } + /* No new messages, wait for activity. */ + if (pollJournal(etry->journalContext, stateFile) != RS_RET_OK && + !etry->journalContext->reloaded) { + tryRecover(etry->journalContext); + } + continue; + } + + /* + * update journal disk usage before reading the new message. + */ + const int e = sd_journal_get_usage(etry->journalContext->j, (uint64_t *)&statsCounter.diskUsageBytes); + if (e < 0) { + LogError(-e, RS_RET_ERR, "imjournal: sd_get_usage() failed"); + } + + if (readjournal(etry->journalContext, etry->pBindRuleset) != RS_RET_OK) { + tryRecover(etry->journalContext); + continue; + } + + count++; + etry->journalContext->atHead = 0; + if (stateFile) { /* can't persist without a state file */ + /* TODO: This could use some finer metric. */ + if ((count % cs.iPersistStateInterval) == 0) { + persistJournalState(etry->journalContext, stateFile); + } + } + } +finalize_it: + RETiRet; +} + +static void * +RunServerThread(void *myself) +{ + DEFiRet; + journal_etry_t *const etry = (journal_etry_t*) myself; + iRet = doRun(etry); + if(iRet != RS_RET_OK) { + LogError(0, iRet, "imjournal: error while stopping journal processing; " + "rsyslog may hang on shutdown"); + } + return NULL; +} + +/* support for running multiple servers on multiple threads (one server per thread) */ +static void +startSrvWrkr(journal_etry_t *const etry) +{ + int r; + pthread_attr_t sessThrdAttr; + + /* We need to temporarily block all signals because the new thread + * inherits our signal mask. There is a race if we do not block them + * now, and we have seen in practice that this race causes grief. + * So we 1. save the current set, 2. block evertyhing, 3. start + * threads, and 4 reset the current set to saved state. + * rgerhards, 2019-08-16 + */ + sigset_t sigSet, sigSetSave; + sigfillset(&sigSet); + /* enable signals we still need */ + sigdelset(&sigSet, SIGTTIN); + sigdelset(&sigSet, SIGSEGV); + pthread_sigmask(SIG_SETMASK, &sigSet, &sigSetSave); + + pthread_attr_init(&sessThrdAttr); + pthread_attr_setstacksize(&sessThrdAttr, 4096*1024); + r = pthread_create(&etry->tid, &sessThrdAttr, RunServerThread, etry); + if(r != 0) { + LogError(r, NO_ERRCODE, "imjournal: error creating imjournal thread"); + /* we do NOT abort, as other servers may run - after all, we logged an error */ + } + pthread_attr_destroy(&sessThrdAttr); + pthread_sigmask(SIG_SETMASK, &sigSetSave, NULL); +} + +/* stop server worker thread + */ +static void +stopSrvWrkr(journal_etry_t *const etry) +{ + DBGPRINTF("Wait for thread shutdown etry %p\n", etry); + pthread_kill(etry->tid, SIGTTIN); + pthread_join(etry->tid, NULL); + DBGPRINTF("input %p terminated\n", etry); +} + +BEGINrunInput +CODESTARTrunInput + CHKiRet(ratelimitNew(&ratelimiter, "imjournal", NULL)); + dbgprintf("imjournal: ratelimiting burst %u, interval %u\n", cs.ratelimitBurst, + cs.ratelimitInterval); + ratelimitSetLinuxLike(ratelimiter, cs.ratelimitInterval, cs.ratelimitBurst); + ratelimitSetNoTimeCache(ratelimiter); + + /* handling old "usepidfromsystem" option */ + if (cs.bUseJnlPID != -1) { + free(cs.usePid); + cs.usePid = strdup("system"); + LogError(0, RS_RET_DEPRECATED, + "\"usepidfromsystem\" is deprecated, use \"usepid\" instead"); + } + + journal_etry_t *etry = journal_root->next; + while(etry != NULL) { + startSrvWrkr(etry); + etry = etry->next; + } + + CHKiRet(doRun(journal_root)); + + etry = journal_root->next; + while(etry != NULL) { + stopSrvWrkr(etry); + etry = etry->next; + } + +finalize_it: +ENDrunInput + + +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad + loadModConf = pModConf; + pModConf->pConf = pConf; + bLegacyCnfModGlobalsPermitted = 1; + + cs.bIgnoreNonValidStatefile = 1; + cs.iPersistStateInterval = DFLT_persiststateinterval; + cs.stateFile = NULL; + cs.fCreateMode = -1; + cs.ratelimitBurst = 20000; + cs.ratelimitInterval = 600; + cs.iDfltSeverity = DFLT_SEVERITY; + cs.iDfltFacility = DFLT_FACILITY; + cs.bUseJnlPID = -1; + cs.usePid = NULL; + cs.bWorkAroundJournalBug = 1; + cs.bFsync = 0; + cs.bRemote = 0; + cs.dfltTag = NULL; +ENDbeginCnfLoad + + +BEGINendCnfLoad +CODESTARTendCnfLoad + /* bad trick to handle old and new style config all in old-style var */ + if(cs.stateFile != NULL && cs.stateFile[0] != '/') { + char *new_stateFile; + if (-1 == asprintf(&new_stateFile, "%s/%s", + (char *)glbl.GetWorkDir(loadModConf->pConf), cs.stateFile)) { + LogError(0, RS_RET_OUT_OF_MEMORY, "imjournal: asprintf failed\n"); + ABORT_FINALIZE(RS_RET_OUT_OF_MEMORY); + } + free (cs.stateFile); + cs.stateFile = new_stateFile; + } +finalize_it: +ENDendCnfLoad + + +BEGINcheckCnf + instanceConf_t *inst; +CODESTARTcheckCnf + for(inst = pModConf->root ; inst != NULL ; inst = inst->next) { + std_checkRuleset(pModConf, inst); + } +ENDcheckCnf + + +BEGINactivateCnf + instanceConf_t *inst; + instanceConf_t *root_inst = NULL; + u_int8_t index = 0; +CODESTARTactivateCnf + runModConf = pModConf; + + /* support statistic gathering */ + CHKiRet(statsobj.Construct(&(statsCounter.stats))); + CHKiRet(statsobj.SetName(statsCounter.stats, (uchar*)"imjournal")); + CHKiRet(statsobj.SetOrigin(statsCounter.stats, (uchar*)"imjournal")); + STATSCOUNTER_INIT(statsCounter.ctrSubmitted, statsCounter.mutCtrSubmitted); + CHKiRet(statsobj.AddCounter(statsCounter.stats, UCHAR_CONSTANT("submitted"), + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &(statsCounter.ctrSubmitted))); + STATSCOUNTER_INIT(statsCounter.ctrRead, statsCounter.mutCtrRead); + CHKiRet(statsobj.AddCounter(statsCounter.stats, UCHAR_CONSTANT("read"), + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &(statsCounter.ctrRead))); + STATSCOUNTER_INIT(statsCounter.ctrDiscarded, statsCounter.mutCtrDiscarded); + CHKiRet(statsobj.AddCounter(statsCounter.stats, UCHAR_CONSTANT("discarded"), + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &(statsCounter.ctrDiscarded))); + STATSCOUNTER_INIT(statsCounter.ctrFailed, statsCounter.mutCtrFailed); + CHKiRet(statsobj.AddCounter(statsCounter.stats, UCHAR_CONSTANT("failed"), + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &(statsCounter.ctrFailed))); + STATSCOUNTER_INIT(statsCounter.ctrPollFailed, statsCounter.mutCtrPollFailed); + CHKiRet(statsobj.AddCounter(statsCounter.stats, UCHAR_CONSTANT("poll_failed"), + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &(statsCounter.ctrPollFailed))); + STATSCOUNTER_INIT(statsCounter.ctrRotations, statsCounter.mutCtrRotations); + CHKiRet(statsobj.AddCounter(statsCounter.stats, UCHAR_CONSTANT("rotations"), + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &(statsCounter.ctrRotations))); + STATSCOUNTER_INIT(statsCounter.ctrRecoveryAttempts, statsCounter.mutCtrRecoveryAttempts); + CHKiRet(statsobj.AddCounter(statsCounter.stats, UCHAR_CONSTANT("recovery_attempts"), + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &(statsCounter.ctrRecoveryAttempts))); + CHKiRet(statsobj.AddCounter(statsCounter.stats, UCHAR_CONSTANT("ratelimit_discarded_in_interval"), + ctrType_Int, CTR_FLAG_NONE, &(statsCounter.ratelimitDiscardedInInterval))); + CHKiRet(statsobj.AddCounter(statsCounter.stats, UCHAR_CONSTANT("disk_usage_bytes"), + ctrType_Int, CTR_FLAG_NONE, &(statsCounter.diskUsageBytes))); + CHKiRet(statsobj.ConstructFinalize(statsCounter.stats)); + /* end stats counter */ + + for(inst = runModConf->root ; inst != NULL ; inst = inst->next) { + if(cs.stateFile) { + char *new_stateFile; + if (-1 == asprintf(&new_stateFile, "%s/%s", cs.stateFile, inst->pszBindRuleset)) { + LogError(0, RS_RET_OUT_OF_MEMORY, "imjournal: asprintf failed\n"); + ABORT_FINALIZE(RS_RET_OUT_OF_MEMORY); + } + free(inst->stateFile); + inst->stateFile = new_stateFile;; + } + + // Only the first input module with main enabled will be treated as + // the main process. + if (inst->bMain && root_inst == NULL) { + root_inst = inst; + } else { + if (addListner(inst, index++) != RS_RET_OK) { + LogError(0, RS_RET_NO_MORE_DATA, + "imjournal: Can only support up to %i journals\n", + MAX_JOURNAL); + ABORT_FINALIZE(RS_RET_NO_MORE_DATA); + } + } + } + + // Add all state files as a subfile of original cs.stateFile. + if(runModConf->root != NULL && cs.stateFile) { + char *new_stateFile; + if (-1 == asprintf(&new_stateFile, "%s/default", cs.stateFile)) { + LogError(0, RS_RET_OUT_OF_MEMORY, "imjournal: asprintf failed\n"); + ABORT_FINALIZE(RS_RET_OUT_OF_MEMORY); + } + + // TODO(need to delete old state file and create the folder. + DIR *stateDir; + if (!(stateDir = opendir(cs.stateFile))) { + remove(cs.stateFile); + mkdir(cs.stateFile, 0700); + } else { + closedir(stateDir); + } + + free(cs.stateFile); + cs.stateFile = new_stateFile;; + } + + // Default Handlers. Will be used as the main process if no `main` + // property is set in the input modules. + if (addListner(NULL, index++) != RS_RET_OK) { + LogError(0, RS_RET_NO_MORE_DATA, + "imjournal: Can only support up to %i journals\n", + MAX_JOURNAL); + ABORT_FINALIZE(RS_RET_NO_MORE_DATA); + } + + // Main process will be the top of journal_root. + if (root_inst != NULL){ + if (addListner(root_inst, index++) != RS_RET_OK) { + LogError(0, RS_RET_NO_MORE_DATA, + "imjournal: Can only support up to %i journals\n", + MAX_JOURNAL); + ABORT_FINALIZE(RS_RET_NO_MORE_DATA); + } + } + +finalize_it: +ENDactivateCnf + + +BEGINfreeCnf + instanceConf_t *inst, *del; +CODESTARTfreeCnf + for(inst = pModConf->root ; inst != NULL ; ) { + free(inst->pszBindRuleset); + free(inst->stateFile); + del = inst; + inst = inst->next; + free(del); + } + free(cs.stateFile); + free(cs.usePid); + free(cs.dfltTag); + statsobj.Destruct(&(statsCounter.stats)); +ENDfreeCnf + +/* open journal */ +BEGINwillRun + journal_etry_t *etry = journal_root; +CODESTARTwillRun + while(etry != NULL) { + CHKiRet(openJournal(etry->journalContext)); + etry = etry->next; + } +finalize_it: +ENDwillRun + +/* close journal */ +BEGINafterRun + journal_etry_t *etry = journal_root; + journal_etry_t *del; +CODESTARTafterRun + while(etry != NULL) { + char *stateFile = cs.stateFile; + if (etry->stateFile) { + stateFile = etry->stateFile; + } + if (stateFile) { /* can't persist without a state file */ + persistJournalState(etry->journalContext, stateFile); + } + closeJournal(etry->journalContext); + free(etry->journalContext->cursor); + // TODO: check iRet, reprot error + del = etry; + etry = etry->next; + free(del); + } + + if (ratelimiter) { + ratelimitDestruct(ratelimiter); + } +ENDafterRun + + +BEGINmodExit +CODESTARTmodExit + if(pInputName != NULL) + prop.Destruct(&pInputName); + if(pLocalHostIP != NULL) + prop.Destruct(&pLocalHostIP); + + /* release objects we used */ + objRelease(statsobj, CORE_COMPONENT); + objRelease(glbl, CORE_COMPONENT); + objRelease(net, CORE_COMPONENT); + objRelease(datetime, CORE_COMPONENT); + objRelease(parser, CORE_COMPONENT); + objRelease(prop, CORE_COMPONENT); + objRelease(ruleset, CORE_COMPONENT); +ENDmodExit + + +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 imjournal:\n"); + cnfparamsPrint(&modpblk, pvals); + } + + for (i = 0 ; i < modpblk.nParams ; ++i) { + if (!pvals[i].bUsed) + continue; + if (!strcmp(modpblk.descr[i].name, "persiststateinterval")) { + cs.iPersistStateInterval = (int) pvals[i].val.d.n; + } else if (!strcmp(modpblk.descr[i].name, "statefile")) { + cs.stateFile = (char *)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(modpblk.descr[i].name, "filecreatemode")) { + cs.fCreateMode = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "ratelimit.burst")) { + cs.ratelimitBurst = (unsigned int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "ratelimit.interval")) { + cs.ratelimitInterval = (unsigned int) pvals[i].val.d.n; + } else if (!strcmp(modpblk.descr[i].name, "ignorepreviousmessages")) { + cs.bIgnorePrevious = (int) pvals[i].val.d.n; + } else if (!strcmp(modpblk.descr[i].name, "ignorenonvalidstatefile")) { + cs.bIgnoreNonValidStatefile = (int) pvals[i].val.d.n; + } else if (!strcmp(modpblk.descr[i].name, "defaultseverity")) { + cs.iDfltSeverity = (int) pvals[i].val.d.n; + } else if (!strcmp(modpblk.descr[i].name, "defaultfacility")) { + /* ugly workaround to handle facility numbers; values + derived from names need to be eight times smaller */ + + char *fac, *p; + + fac = p = es_str2cstr(pvals[i].val.d.estr, NULL); + facilityHdlr((uchar **) &p, (void *) &cs.iDfltFacility); + free(fac); + } else if (!strcmp(modpblk.descr[i].name, "usepidfromsystem")) { + cs.bUseJnlPID = (int) pvals[i].val.d.n; + } else if (!strcmp(modpblk.descr[i].name, "usepid")) { + cs.usePid = (char *)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if (!strcmp(modpblk.descr[i].name, "workaroundjournalbug")) { + cs.bWorkAroundJournalBug = (int) pvals[i].val.d.n; + } else if (!strcmp(modpblk.descr[i].name, "fsync")) { + cs.bFsync = (int) pvals[i].val.d.n; + } else if (!strcmp(modpblk.descr[i].name, "remote")) { + cs.bRemote = (int) pvals[i].val.d.n; + } else if (!strcmp(modpblk.descr[i].name, "defaulttag")) { + cs.dfltTag = (char *)es_str2cstr(pvals[i].val.d.estr, NULL); + } else { + dbgprintf("imjournal: program error, non-handled " + "param '%s' in beginCnfLoad\n", modpblk.descr[i].name); + } + } + + /* File create mode is not set */ + if (cs.fCreateMode == -1) { + const int fCreateMode = 0644; + LogMsg(0, RS_RET_OK_WARN, LOG_WARNING, "imjournal: filecreatemode is not set, " + "using default %04o", fCreateMode); + cs.fCreateMode = fCreateMode; + } + +finalize_it: + if (pvals != NULL) + cnfparamvalsDestruct(pvals, &modpblk); +ENDsetModCnf + +/* create input instance, set default parameters, and + * add it to the list of instances. + */ +static rsRetVal ATTR_NONNULL(1) +createInstance(instanceConf_t **const pinst) +{ + instanceConf_t *inst; + DEFiRet; + CHKmalloc(inst = malloc(sizeof(instanceConf_t))); + inst->next = NULL; + inst->pBindRuleset = NULL; + inst->pszBindRuleset = NULL; + + /* 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: + if(iRet != RS_RET_OK) { + free(inst); + } + RETiRet; +} + + +BEGINnewInpInst + struct cnfparamvals *pvals; + instanceConf_t *inst; + int i; +CODESTARTnewInpInst + DBGPRINTF("newInpInst (imjournal)\n"); + + pvals = nvlstGetParams(lst, &inppblk, NULL); + if(pvals == NULL) { + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + if(Debug) { + DBGPRINTF("input param blk in imjournal:\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, "ruleset")) { + inst->pszBindRuleset = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(inppblk.descr[i].name, "main")) { + inst->bMain = (int) pvals[i].val.d.n; + } else { + DBGPRINTF("program error, non-handled " + "param '%s'\n", inppblk.descr[i].name); + } + } +finalize_it: +CODE_STD_FINALIZERnewInpInst + if (pvals != NULL) + cnfparamvalsDestruct(pvals, &inppblk); +ENDnewInpInst + + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature + if(eFeat == sFEATURENonCancelInputTermination) + iRet = RS_RET_OK; +ENDisCompatibleWithFeature + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_IMOD_QUERIES +CODEqueryEtryPt_STD_CONF2_QUERIES +CODEqueryEtryPt_STD_CONF2_setModCnf_QUERIES +CODEqueryEtryPt_STD_CONF2_IMOD_QUERIES +CODEqueryEtryPt_IsCompatibleWithFeature_IF_OMOD_QUERIES +ENDqueryEtryPt + + +static inline void +std_checkRuleset_genErrMsg(__attribute__((unused)) modConfData_t *modConf, instanceConf_t *inst) +{ + LogError(0, NO_ERRCODE, "imjournal: ruleset '%s' not found - " + "using default ruleset instead", inst->pszBindRuleset); +} + +BEGINmodInit() +CODESTARTmodInit + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr + CHKiRet(objUse(datetime, CORE_COMPONENT)); + CHKiRet(objUse(glbl, CORE_COMPONENT)); + CHKiRet(objUse(parser, CORE_COMPONENT)); + CHKiRet(objUse(prop, CORE_COMPONENT)); + CHKiRet(objUse(net, CORE_COMPONENT)); + CHKiRet(objUse(statsobj, CORE_COMPONENT)); + CHKiRet(objUse(ruleset, CORE_COMPONENT)); + + /* we need to create the inputName property (only once during our lifetime) */ + CHKiRet(prop.CreateStringProp(&pInputName, UCHAR_CONSTANT("imjournal"), sizeof("imjournal") - 1)); + CHKiRet(prop.CreateStringProp(&pLocalHostIP, UCHAR_CONSTANT("127.0.0.1"), sizeof("127.0.0.1") - 1)); + + CHKiRet(omsdRegCFSLineHdlr((uchar *)"imjournalpersiststateinterval", 0, eCmdHdlrInt, + NULL, &cs.iPersistStateInterval, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"imjournalratelimitinterval", 0, eCmdHdlrInt, + NULL, &cs.ratelimitInterval, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"imjournalratelimitburst", 0, eCmdHdlrInt, + NULL, &cs.ratelimitBurst, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"imjournalstatefile", 0, eCmdHdlrGetWord, + NULL, &cs.stateFile, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"imjournalignorepreviousmessages", 0, eCmdHdlrBinary, + NULL, &cs.bIgnorePrevious, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"imjournaldefaultseverity", 0, eCmdHdlrSeverity, + NULL, &cs.iDfltSeverity, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"imjournaldefaultfacility", 0, eCmdHdlrCustomHandler, + facilityHdlr, &cs.iDfltFacility, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"imjournalusepidfromsystem", 0, eCmdHdlrBinary, + NULL, &cs.bUseJnlPID, STD_LOADABLE_MODULE_ID)); +ENDmodInit +/* vim:set ai: + */ |