diff options
Diffstat (limited to 'contrib/omfile-hardened')
| -rw-r--r-- | contrib/omfile-hardened/Makefile.am | 8 | ||||
| -rw-r--r-- | contrib/omfile-hardened/Makefile.in | 799 | ||||
| -rw-r--r-- | contrib/omfile-hardened/omfile-hardened.c | 1654 |
3 files changed, 2461 insertions, 0 deletions
diff --git a/contrib/omfile-hardened/Makefile.am b/contrib/omfile-hardened/Makefile.am new file mode 100644 index 0000000..c1c754e --- /dev/null +++ b/contrib/omfile-hardened/Makefile.am @@ -0,0 +1,8 @@ +pkglib_LTLIBRARIES = omfile-hardened.la + +omfile_hardened_la_SOURCES = omfile-hardened.c +omfile_hardened_la_CPPFLAGS = $(RSRT_CFLAGS) $(PTHREADS_CFLAGS) -I ../../tools +omfile_hardened_la_LDFLAGS = -module -avoid-version +omfile_hardened_la_LIBADD = + +EXTRA_DIST = diff --git a/contrib/omfile-hardened/Makefile.in b/contrib/omfile-hardened/Makefile.in new file mode 100644 index 0000000..e1ba943 --- /dev/null +++ b/contrib/omfile-hardened/Makefile.in @@ -0,0 +1,799 @@ +# 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; 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/dev/null +++ b/contrib/omfile-hardened/omfile-hardened.c @@ -0,0 +1,1654 @@ +/* omfile.c + * This is the implementation of the build-in file output module. + * + * NOTE: read comments in module-template.h to understand how this file + * works! + * + * File begun on 2007-07-21 by RGerhards (extracted from syslogd.c, which + * at the time of the fork from sysklogd was under BSD license) + * + * A large re-write of this file was done in June, 2009. The focus was + * to introduce many more features (like zipped writing), clean up the code + * and make it more reliable. In short, that rewrite tries to provide a new + * solid basis for the next three to five years to come. During it, bugs + * may have been introduced ;) -- rgerhards, 2009-06-04 + * + * Note that as of 2010-02-28 this module does no longer handle + * pipes. These have been moved to ompipe, to reduced the entanglement + * between the two different functionalities. -- rgerhards + * + * Copyright 2007-2017 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 "glbl.h" +#include <stdio.h> +#include <stdarg.h> +#include <stdlib.h> +#include <string.h> +#include <time.h> +#include <assert.h> +#include <errno.h> +#include <ctype.h> +#include <libgen.h> +#include <unistd.h> +#include <sys/file.h> +#include <fcntl.h> +#include <sys/statvfs.h> +#ifdef HAVE_ATOMIC_BUILTINS +# include <pthread.h> +#endif + + +#include "conf.h" +#include "syslogd-types.h" +#include "srUtils.h" +#include "template.h" +#include "outchannel.h" +#include "omfile.h" +#include "cfsysline.h" +#include "module-template.h" +#include "errmsg.h" +#include "stream.h" +#include "unicode-helper.h" +#include "atomic.h" +#include "statsobj.h" +#include "sigprov.h" +#include "cryprov.h" +#include "parserif.h" +#include "janitor.h" +#include "rsconf.h" + +MODULE_TYPE_OUTPUT +MODULE_TYPE_NOKEEP +MODULE_CNFNAME("omfile") + +/* forward definitions */ +static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal); + +/* internal structures + */ +DEF_OMOD_STATIC_DATA +DEFobjCurrIf(glbl) +DEFobjCurrIf(strm) +DEFobjCurrIf(statsobj) + +/* for our current LRU mechanism, we need a monotonically increasing counters. We use + * it much like a "Lamport logical clock": we do not need the actual time, we just need + * to know the sequence in which files were accessed. So we use a simple counter to + * create that sequence. We use an unsigned 64 bit value which is extremely unlike to + * wrap within the lifetime of a process. If we process 1,000,000 file writes per + * second, the process could still exist over 500,000 years before a wrap to 0 happens. + * That should be sufficient (and even than, there would no really bad effect ;)). + * The variable below is the global counter/clock. + */ +#if HAVE_ATOMIC_BUILTINS64 +static uint64 clockFileAccess = 0; +#else +static unsigned clockFileAccess = 0; +#endif +/* and the "tick" function */ +#ifndef HAVE_ATOMIC_BUILTINS +static pthread_mutex_t mutClock; +#endif +static uint64 +getClockFileAccess(void) +{ +#if HAVE_ATOMIC_BUILTINS64 + return ATOMIC_INC_AND_FETCH_uint64(&clockFileAccess, &mutClock); +#else + return ATOMIC_INC_AND_FETCH_unsigned(&clockFileAccess, &mutClock); +#endif +} + + +/* The following structure is a dynafile name cache entry. + */ +struct s_dynaFileCacheEntry { + uchar *pName; /* name currently open, if dynamic name */ + strm_t *pStrm; /* our output stream */ + void *sigprovFileData; /* opaque data ptr for provider use */ + uint64 clkTickAccessed;/* for LRU - based on clockFileAccess */ + short nInactive; /* number of minutes not writen - for close timeout */ +}; +typedef struct s_dynaFileCacheEntry dynaFileCacheEntry; + + +#define IOBUF_DFLT_SIZE 4096 /* default size for io buffers */ +#define FLUSH_INTRVL_DFLT 1 /* default buffer flush interval (in seconds) */ +#define USE_ASYNCWRITER_DFLT 0 /* default buffer use async writer */ +#define FLUSHONTX_DFLT 1 /* default for flush on TX end */ + +typedef struct _instanceData { + pthread_mutex_t mutWrite; /* guard against multiple instances writing to single file */ + uchar *fname; /* file or template name (display only) */ + uchar *tplName; /* name of assigned template */ + strm_t *pStrm; /* our output stream */ + short nInactive; /* number of minutes not writen (STATIC files only) */ + char bDynamicName; /* 0 - static name, 1 - dynamic name (with properties) */ + int fCreateMode; /* file creation mode for open() */ + int fDirCreateMode; /* creation mode for mkdir() */ + int bCreateDirs; /* auto-create directories? */ + int bSyncFile; /* should the file by sync()'ed? 1- yes, 0- no */ + uint8_t iNumTpls; /* number of tpls we use */ + uid_t fileUID; /* IDs for creation */ + uid_t dirUID; + gid_t fileGID; + gid_t dirGID; + int bFailOnChown; /* fail creation if chown fails? */ + uchar *sigprovName; /* signature provider */ + uchar *sigprovNameFull;/* full internal signature provider name */ + sigprov_if_t sigprov; /* ptr to signature provider interface */ + void *sigprovData; /* opaque data ptr for provider use */ + void *sigprovFileData;/* opaque data ptr for file instance */ + sbool useSigprov; /* quicker than checkig ptr (1 vs 8 bytes!) */ + uchar *cryprovName; /* crypto provider */ + uchar *cryprovNameFull;/* full internal crypto provider name */ + void *cryprovData; /* opaque data ptr for provider use */ + cryprov_if_t cryprov; /* ptr to crypto provider interface */ + sbool useCryprov; /* quicker than checkig ptr (1 vs 8 bytes!) */ + int iCurrElt; /* currently active cache element (-1 = none) */ + uint iCurrCacheSize; /* currently cache size (1-based) */ + uint iDynaFileCacheSize; /* size of file handle cache */ + /* The cache is implemented as an array. An empty element is indicated + * by a NULL pointer. Memory is allocated as needed. The following + * pointer points to the overall structure. + */ + dynaFileCacheEntry **dynCache; + off_t iSizeLimit; /* file size limit, 0 = no limit */ + uchar *pszSizeLimitCmd; /* command to carry out when size limit is reached */ + int iZipLevel; /* zip mode to use for this selector */ + uint iIOBufSize; /* size of associated io buffer */ + int iFlushInterval; /* how fast flush buffer on inactivity? */ + short iCloseTimeout; /* after how many *minutes* shall the file be closed if inactive? */ + sbool bFlushOnTXEnd; /* flush write buffers when transaction has ended? */ + sbool bUseAsyncWriter; /* use async stream writer? */ + sbool bVeryRobustZip; + statsobj_t *stats; /* dynafile, primarily cache stats */ + STATSCOUNTER_DEF(ctrRequests, mutCtrRequests); + STATSCOUNTER_DEF(ctrLevel0, mutCtrLevel0); + STATSCOUNTER_DEF(ctrEvict, mutCtrEvict); + STATSCOUNTER_DEF(ctrMiss, mutCtrMiss); + STATSCOUNTER_DEF(ctrMax, mutCtrMax); + STATSCOUNTER_DEF(ctrCloseTimeouts, mutCtrCloseTimeouts); + char janitorID[128]; /* holds ID for janitor calls */ +} instanceData; + + +typedef struct wrkrInstanceData { + instanceData *pData; +} wrkrInstanceData_t; + + +typedef struct configSettings_s { + uint iDynaFileCacheSize; /* max cache for dynamic files */ + int fCreateMode; /* mode to use when creating files */ + int fDirCreateMode; /* mode to use when creating files */ + int bFailOnChown; /* fail if chown fails? */ + uid_t fileUID; /* UID to be used for newly created files */ + uid_t fileGID; /* GID to be used for newly created files */ + uid_t dirUID; /* UID to be used for newly created directories */ + uid_t dirGID; /* GID to be used for newly created directories */ + int bCreateDirs;/* auto-create directories for dynaFiles: 0 - no, 1 - yes */ + int bEnableSync;/* enable syncing of files (no dash in front of pathname in conf): 0 - no, 1 - yes */ + int iZipLevel; /* zip compression mode (0..9 as usual) */ + sbool bFlushOnTXEnd;/* flush write buffers when transaction has ended? */ + int64 iIOBufSize; /* size of an io buffer */ + int iFlushInterval; /* how often flush the output buffer on inactivity? */ + int bUseAsyncWriter; /* should we enable asynchronous writing? */ + EMPTY_STRUCT +} configSettings_t; +static configSettings_t cs; +uchar *pszFileDfltTplName; /* name of the default template to use */ + +struct modConfData_s { + rsconf_t *pConf; /* our overall config object */ + uchar *tplName; /* default template */ + int fCreateMode; /* default mode to use when creating files */ + int fDirCreateMode; /* default mode to use when creating files */ + uid_t fileUID; /* default IDs for creation */ + uid_t dirUID; + gid_t fileGID; + gid_t dirGID; + int bDynafileDoNotSuspend; +}; + +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 exec process */ + +/* tables for interfacing with the v6 config system */ +/* module-global parameters */ +static struct cnfparamdescr modpdescr[] = { + { "template", eCmdHdlrGetWord, 0 }, + { "dircreatemode", eCmdHdlrFileCreateMode, 0 }, + { "filecreatemode", eCmdHdlrFileCreateMode, 0 }, + { "dirowner", eCmdHdlrUID, 0 }, + { "dirownernum", eCmdHdlrInt, 0 }, + { "dirgroup", eCmdHdlrGID, 0 }, + { "dirgroupnum", eCmdHdlrInt, 0 }, + { "fileowner", eCmdHdlrUID, 0 }, + { "fileownernum", eCmdHdlrInt, 0 }, + { "filegroup", eCmdHdlrGID, 0 }, + { "dynafile.donotsuspend", eCmdHdlrBinary, 0 }, + { "filegroupnum", eCmdHdlrInt, 0 }, +}; +static struct cnfparamblk modpblk = + { CNFPARAMBLK_VERSION, + sizeof(modpdescr)/sizeof(struct cnfparamdescr), + modpdescr + }; + +/* action (instance) parameters */ +static struct cnfparamdescr actpdescr[] = { + { "dynafilecachesize", eCmdHdlrInt, 0 }, /* legacy: dynafilecachesize */ + { "ziplevel", eCmdHdlrInt, 0 }, /* legacy: omfileziplevel */ + { "flushinterval", eCmdHdlrInt, 0 }, /* legacy: omfileflushinterval */ + { "asyncwriting", eCmdHdlrBinary, 0 }, /* legacy: omfileasyncwriting */ + { "veryrobustzip", eCmdHdlrBinary, 0 }, + { "flushontxend", eCmdHdlrBinary, 0 }, /* legacy: omfileflushontxend */ + { "iobuffersize", eCmdHdlrSize, 0 }, /* legacy: omfileiobuffersize */ + { "dirowner", eCmdHdlrUID, 0 }, /* legacy: dirowner */ + { "dirownernum", eCmdHdlrInt, 0 }, /* legacy: dirownernum */ + { "dirgroup", eCmdHdlrGID, 0 }, /* legacy: dirgroup */ + { "dirgroupnum", eCmdHdlrInt, 0 }, /* legacy: dirgroupnum */ + { "fileowner", eCmdHdlrUID, 0 }, /* legacy: fileowner */ + { "fileownernum", eCmdHdlrInt, 0 }, /* legacy: fileownernum */ + { "filegroup", eCmdHdlrGID, 0 }, /* legacy: filegroup */ + { "filegroupnum", eCmdHdlrInt, 0 }, /* legacy: filegroupnum */ + { "dircreatemode", eCmdHdlrFileCreateMode, 0 }, /* legacy: dircreatemode */ + { "filecreatemode", eCmdHdlrFileCreateMode, 0 }, /* legacy: filecreatemode */ + { "failonchownfailure", eCmdHdlrBinary, 0 }, /* legacy: failonchownfailure */ + { "createdirs", eCmdHdlrBinary, 0 }, /* legacy: createdirs */ + { "sync", eCmdHdlrBinary, 0 }, /* legacy: actionfileenablesync */ + { "file", eCmdHdlrString, 0 }, /* either "file" or ... */ + { "dynafile", eCmdHdlrString, 0 }, /* "dynafile" MUST be present */ + { "sig.provider", eCmdHdlrGetWord, 0 }, + { "cry.provider", eCmdHdlrGetWord, 0 }, + { "closetimeout", eCmdHdlrPositiveInt, 0 }, + { "template", eCmdHdlrGetWord, 0 } +}; +static struct cnfparamblk actpblk = + { CNFPARAMBLK_VERSION, + sizeof(actpdescr)/sizeof(struct cnfparamdescr), + actpdescr + }; + + +/* this function gets the default template. It coordinates action between + * old-style and new-style configuration parts. + */ +static uchar* +getDfltTpl(void) +{ + if(loadModConf != NULL && loadModConf->tplName != NULL) + return loadModConf->tplName; + else if(pszFileDfltTplName == NULL) + return (uchar*)"RSYSLOG_FileFormat"; + else + return pszFileDfltTplName; +} + + +BEGINinitConfVars /* (re)set config variables to default values */ +CODESTARTinitConfVars + pszFileDfltTplName = NULL; /* make sure this can be free'ed! */ + iRet = resetConfigVariables(NULL, NULL); /* params are dummies */ +ENDinitConfVars + +BEGINisCompatibleWithFeature +CODESTARTisCompatibleWithFeature + if(eFeat == sFEATURERepeatedMsgReduction) + iRet = RS_RET_OK; +ENDisCompatibleWithFeature + + +BEGINdbgPrintInstInfo +CODESTARTdbgPrintInstInfo + if(pData->bDynamicName) { + dbgprintf("[dynamic]\n"); + } else { /* regular file */ + dbgprintf("%s%s\n", pData->fname, + (pData->pStrm == NULL) ? " (closed)" : ""); + } + + dbgprintf("\ttemplate='%s'\n", pData->fname); + dbgprintf("\tuse async writer=%d\n", pData->bUseAsyncWriter); + dbgprintf("\tflush on TX end=%d\n", pData->bFlushOnTXEnd); + dbgprintf("\tflush interval=%d\n", pData->iFlushInterval); + dbgprintf("\tfile cache size=%d\n", pData->iDynaFileCacheSize); + dbgprintf("\tcreate directories: %s\n", pData->bCreateDirs ? "on" : "off"); + dbgprintf("\tvery robust zip: %s\n", pData->bCreateDirs ? "on" : "off"); + dbgprintf("\tfile owner %d, group %d\n", (int) pData->fileUID, (int) pData->fileGID); + dbgprintf("\tdirectory owner %d, group %d\n", (int) pData->dirUID, (int) pData->dirGID); + dbgprintf("\tdir create mode 0%3.3o, file create mode 0%3.3o\n", + pData->fDirCreateMode, pData->fCreateMode); + dbgprintf("\tfail if owner/group can not be set: %s\n", pData->bFailOnChown ? "yes" : "no"); +ENDdbgPrintInstInfo + + + +/* set the default template to be used + * This is a module-global parameter, and as such needs special handling. It needs to + * be coordinated with values set via the v2 config system (rsyslog v6+). What we do + * is we do not permit this directive after the v2 config system has been used to set + * the parameter. + */ +static rsRetVal +setLegacyDfltTpl(void __attribute__((unused)) *pVal, uchar* newVal) +{ + DEFiRet; + + if(loadModConf != NULL && loadModConf->tplName != NULL) { + free(newVal); + parser_errmsg("omfile: default template already set via module " + "global parameter - can no longer be changed"); + ABORT_FINALIZE(RS_RET_ERR); + } + free(pszFileDfltTplName); + pszFileDfltTplName = newVal; +finalize_it: + RETiRet; +} + + +/* set the dynaFile cache size. Does some limit checking. + * rgerhards, 2007-07-31 + */ +static rsRetVal setDynaFileCacheSize(void __attribute__((unused)) *pVal, int iNewVal) +{ + DEFiRet; + + if(iNewVal < 1) { + errno = 0; + parser_errmsg( + "DynaFileCacheSize must be greater 0 (%d given), changed to 1.", iNewVal); + iRet = RS_RET_VAL_OUT_OF_RANGE; + iNewVal = 1; + } else if(iNewVal > 1000) { + errno = 0; + parser_errmsg( + "DynaFileCacheSize maximum is 1,000 (%d given), changed to 1,000.", iNewVal); + iRet = RS_RET_VAL_OUT_OF_RANGE; + iNewVal = 1000; + } + + cs.iDynaFileCacheSize = iNewVal; + DBGPRINTF("DynaFileCacheSize changed to %d.\n", iNewVal); + + RETiRet; +} + + +/* Helper to cfline(). Parses a output channel name up until the first + * comma and then looks for the template specifier. Tries + * to find that template. Maps the output channel to the + * proper filed structure settings. Everything is stored in the + * filed struct. Over time, the dependency on filed might be + * removed. + * rgerhards 2005-06-21 + */ +static rsRetVal cflineParseOutchannel(instanceData *pData, uchar* p, omodStringRequest_t *pOMSR, + int iEntry, int iTplOpts) +{ + DEFiRet; + size_t i; + struct outchannel *pOch; + char szBuf[128]; /* should be more than sufficient */ + + ++p; /* skip '$' */ + i = 0; + /* get outchannel name */ + while(*p && *p != ';' && *p != ' ' && + i < (sizeof(szBuf) - 1) ) { + szBuf[i++] = *p++; + } + szBuf[i] = '\0'; + + /* got the name, now look up the channel... */ + pOch = ochFind(szBuf, i); + + if(pOch == NULL) { + parser_errmsg( + "outchannel '%s' not found - ignoring action line", + szBuf); + ABORT_FINALIZE(RS_RET_NOT_FOUND); + } + + /* check if there is a file name in the outchannel... */ + if(pOch->pszFileTemplate == NULL) { + parser_errmsg( + "outchannel '%s' has no file name template - ignoring action line", + szBuf); + ABORT_FINALIZE(RS_RET_ERR); + } + + /* OK, we finally got a correct template. So let's use it... */ + pData->fname = ustrdup(pOch->pszFileTemplate); + pData->iSizeLimit = pOch->uSizeLimit; + /* WARNING: It is dangerous "just" to pass the pointer. As we + * never rebuild the output channel description, this is acceptable here. + */ + pData->pszSizeLimitCmd = pOch->cmdOnSizeLimit; + + iRet = cflineParseTemplateName(&p, pOMSR, iEntry, iTplOpts, getDfltTpl()); + +finalize_it: + RETiRet; +} + + +/* This function deletes an entry from the dynamic file name + * cache. A pointer to the cache must be passed in as well + * as the index of the to-be-deleted entry. This index may + * point to an unallocated entry, in whcih case the + * function immediately returns. Parameter bFreeEntry is 1 + * if the entry should be free()ed and 0 if not. + */ +static rsRetVal +dynaFileDelCacheEntry(instanceData *__restrict__ const pData, const int iEntry, const int bFreeEntry) +{ + dynaFileCacheEntry **pCache = pData->dynCache; + DEFiRet; + assert(pCache != NULL); + + if(pCache[iEntry] == NULL) + FINALIZE; + + DBGPRINTF("Removing entry %d for file '%s' from dynaCache.\n", iEntry, + pCache[iEntry]->pName == NULL ? UCHAR_CONSTANT("[OPEN FAILED]") : pCache[iEntry]->pName); + + if(pCache[iEntry]->pName != NULL) { + free(pCache[iEntry]->pName); + pCache[iEntry]->pName = NULL; + } + + if(pCache[iEntry]->pStrm != NULL) { + strm.Destruct(&pCache[iEntry]->pStrm); + if(pData->useSigprov) { + pData->sigprov.OnFileClose(pCache[iEntry]->sigprovFileData); + pCache[iEntry]->sigprovFileData = NULL; + } + } + + if(bFreeEntry) { + free(pCache[iEntry]); + pCache[iEntry] = NULL; + } + +finalize_it: + RETiRet; +} + + +/* This function frees all dynamic file name cache entries and closes the + * relevant files. Part of Shutdown and HUP processing. + * rgerhards, 2008-10-23 + */ +static void +dynaFileFreeCacheEntries(instanceData *__restrict__ const pData) +{ + register uint i; + assert(pData != NULL); + + for(i = 0 ; i < pData->iCurrCacheSize ; ++i) { + dynaFileDelCacheEntry(pData, i, 1); + } + pData->iCurrElt = -1; /* invalidate current element */ +} + + +/* This function frees the dynamic file name cache. + */ +static void dynaFileFreeCache(instanceData *__restrict__ const pData) +{ + assert(pData != NULL); + + dynaFileFreeCacheEntries(pData); + if(pData->dynCache != NULL) + free(pData->dynCache); +} + + +/* close current file */ +static rsRetVal +closeFile(instanceData *__restrict__ const pData) +{ + DEFiRet; + if(pData->useSigprov) { + pData->sigprov.OnFileClose(pData->sigprovFileData); + pData->sigprovFileData = NULL; + } + strm.Destruct(&pData->pStrm); + RETiRet; +} + + +/* This prepares the signature provider to process a file */ +static rsRetVal +sigprovPrepare(instanceData *__restrict__ const pData, uchar *__restrict__ const fn) +{ + DEFiRet; + pData->sigprov.OnFileOpen(pData->sigprovData, fn, &pData->sigprovFileData); + RETiRet; +} + +/* This is now shared code for all types of files. It simply prepares + * file access, which, among others, means the the file wil be opened + * and any directories in between will be created (based on config, of + * course). -- rgerhards, 2008-10-22 + * changed to iRet interface - 2009-03-19 + */ +static rsRetVal +prepareFile(instanceData *__restrict__ const pData, const uchar *__restrict__ const newFileName) +{ + int fd; + char errStr[1024]; /* buffer for strerr() */ + DEFiRet; + + pData->pStrm = NULL; + if(access((char*)newFileName, F_OK) != 0) { + /* file does not exist, create it (and eventually parent directories */ + if(pData->bCreateDirs) { + /* We first need to create parent dirs if they are missing. + * We do not report any errors here ourselfs but let the code + * fall through to error handler below. + */ + if(makeFileParentDirs(newFileName, ustrlen(newFileName), + pData->fDirCreateMode, pData->dirUID, + pData->dirGID, pData->bFailOnChown) != 0) { + rs_strerror_r(errno, errStr, sizeof(errStr)); + parser_errmsg( "omfile: creating parent " + "directories for file '%s' failed: %s", + newFileName, errStr); + ABORT_FINALIZE(RS_RET_ERR); /* we give up */ + } + } + /* no matter if we needed to create directories or not, we now try to create + * the file. -- rgerhards, 2008-12-18 (based on patch from William Tisater) + */ + fd = open((char*) newFileName, O_WRONLY|O_APPEND|O_CREAT|O_NOCTTY|O_CLOEXEC, + pData->fCreateMode); + if(fd != -1) { + /* check and set uid/gid */ + if(pData->fileUID != (uid_t)-1 || pData->fileGID != (gid_t) -1) { + /* we need to set owner/group */ + if(fchown(fd, pData->fileUID, pData->fileGID) != 0) { + rs_strerror_r(errno, errStr, sizeof(errStr)); + parser_errmsg( + "omfile: chown for file '%s' failed: %s", + newFileName, errStr); + if(pData->bFailOnChown) { + close(fd); + ABORT_FINALIZE(RS_RET_ERR); /* we give up */ + } + /* we will silently ignore the chown() failure + * if configured to do so. + */ + } + } + close(fd); /* close again, as we need a stream further on */ + } + else { + ABORT_FINALIZE(RS_RET_ERR); + } + } + + /* the copies below are clumpsy, but there is no way around given the + * anomalies in dirname() and basename() [they MODIFY the provided buffer...] + */ + uchar szNameBuf[MAXFNAME+1]; + uchar szDirName[MAXFNAME+1]; + uchar szBaseName[MAXFNAME+1]; + ustrncpy(szNameBuf, newFileName, MAXFNAME); + szNameBuf[MAXFNAME] = '\0'; + ustrncpy(szDirName, (uchar*)dirname((char*)szNameBuf), MAXFNAME); + szDirName[MAXFNAME] = '\0'; + ustrncpy(szNameBuf, newFileName, MAXFNAME); + szNameBuf[MAXFNAME] = '\0'; + ustrncpy(szBaseName, (uchar*)basename((char*)szNameBuf), MAXFNAME); + szBaseName[MAXFNAME] = '\0'; + + CHKiRet(strm.Construct(&pData->pStrm)); + CHKiRet(strm.SetFName(pData->pStrm, szBaseName, ustrlen(szBaseName))); + CHKiRet(strm.SetDir(pData->pStrm, szDirName, ustrlen(szDirName))); + CHKiRet(strm.SetiZipLevel(pData->pStrm, pData->iZipLevel)); + CHKiRet(strm.SetbVeryReliableZip(pData->pStrm, pData->bVeryRobustZip)); + CHKiRet(strm.SetsIOBufSize(pData->pStrm, (size_t) pData->iIOBufSize)); + CHKiRet(strm.SettOperationsMode(pData->pStrm, STREAMMODE_WRITE_APPEND)); + CHKiRet(strm.SettOpenMode(pData->pStrm, cs.fCreateMode)); + CHKiRet(strm.SetbSync(pData->pStrm, pData->bSyncFile)); + CHKiRet(strm.SetsType(pData->pStrm, STREAMTYPE_FILE_SINGLE)); + CHKiRet(strm.SetiSizeLimit(pData->pStrm, pData->iSizeLimit)); + if(pData->useCryprov) { + CHKiRet(strm.Setcryprov(pData->pStrm, &pData->cryprov)); + CHKiRet(strm.SetcryprovData(pData->pStrm, pData->cryprovData)); + } + /* set the flush interval only if we actually use it - otherwise it will activate + * async processing, which is a real performance waste if we do not do buffered + * writes! -- rgerhards, 2009-07-06 + */ + if(pData->bUseAsyncWriter) + CHKiRet(strm.SetiFlushInterval(pData->pStrm, pData->iFlushInterval)); + if(pData->pszSizeLimitCmd != NULL) + CHKiRet(strm.SetpszSizeLimitCmd(pData->pStrm, ustrdup(pData->pszSizeLimitCmd))); + CHKiRet(strm.ConstructFinalize(pData->pStrm)); + + if(pData->useSigprov) + sigprovPrepare(pData, szNameBuf); + +finalize_it: + if(iRet != RS_RET_OK) { + if(pData->pStrm != NULL) { + closeFile(pData); + } + } + RETiRet; +} + +// <kortemik date="2018-02-20"> +/* verify enough we have space left for writes */ +static rsRetVal +fsCheck(instanceData *__restrict__ const pData, const uchar *__restrict__ const fileName) +{ + DEFiRet; + struct statvfs stat; + char *pathcopy; + const char *path; + + pathcopy = strdup((char*)fileName); + path = dirname(pathcopy); + + if (statvfs(path, &stat) != 0) { + iRet = RS_RET_FILE_NO_STAT; + LogError(0, iRet, "could not stat %s", path); + FINALIZE; + } + + /* check if we have space available for all buffers to be flushed and for + * a maximum length message, perhaps current msg size would be enough */ + if (stat.f_bsize * stat.f_bavail < + pData->iIOBufSize * pData->iDynaFileCacheSize + (uint)(glbl.GetMaxLine(runModConf->pConf))) + { + iRet = RS_RET_FS_ERR; + LogError(0, iRet, "too few available blocks in %s", path); + FINALIZE; + } + /* there must be enough inodes left, one is left for administrative purposes + * check is not done if file system reports 0 total inodes, such as btrfs */ + if (stat.f_favail < 2 && stat.f_files > 0) + { + iRet = RS_RET_FS_ERR; + LogError(0, iRet, "too few available inodes in %s", path); + FINALIZE; + } + + /* file system must not be read only */ + if (stat.f_flag == ST_RDONLY) + { + iRet = RS_RET_FS_ERR; + LogError(0, iRet, "file-system is read-only in %s", path); + FINALIZE; + } + + iRet = RS_RET_OK; + +finalize_it: + if (pathcopy != NULL) + free(pathcopy); + RETiRet; +} +// </kortemik> + +/* This function handles dynamic file names. It checks if the + * requested file name is already open and, if not, does everything + * needed to switch to the it. + * Function returns 0 if all went well and non-zero otherwise. + * On successful return pData->fd must point to the correct file to + * be written. + * This is a helper to writeFile(). rgerhards, 2007-07-03 + */ +static rsRetVal +prepareDynFile(instanceData *__restrict__ const pData, const uchar *__restrict__ const newFileName) +{ + uint64 ctOldest; /* "timestamp" of oldest element */ + int iOldest; + uint i; + int iFirstFree; + rsRetVal localRet; + dynaFileCacheEntry **pCache; + DEFiRet; + + assert(pData != NULL); + assert(newFileName != NULL); + + pCache = pData->dynCache; + + /* first check, if we still have the current file */ + if( (pData->iCurrElt != -1) + && !ustrcmp(newFileName, pCache[pData->iCurrElt]->pName)) { + CHKiRet(fsCheck(pData, newFileName)); + + /* great, we are all set */ + pCache[pData->iCurrElt]->clkTickAccessed = getClockFileAccess(); + STATSCOUNTER_INC(pData->ctrLevel0, pData->mutCtrLevel0); + /* LRU needs only a strictly monotonically increasing counter, so such a one could do */ + FINALIZE; + } + + /* ok, no luck. Now let's search the table if we find a matching spot. + * While doing so, we also prepare for creation of a new one. + */ + pData->iCurrElt = -1; /* invalid current element pointer */ + iFirstFree = -1; /* not yet found */ + iOldest = 0; /* we assume the first element to be the oldest - that will change as we loop */ + ctOldest = getClockFileAccess(); /* there must always be an older one */ + for(i = 0 ; i < pData->iCurrCacheSize ; ++i) { + if(pCache[i] == NULL || pCache[i]->pName == NULL) { + if(iFirstFree == -1) + iFirstFree = i; + } else { /* got an element, let's see if it matches */ + if(!ustrcmp(newFileName, pCache[i]->pName)) { + CHKiRet(fsCheck(pData, newFileName)); + + /* we found our element! */ + pData->pStrm = pCache[i]->pStrm; + if(pData->useSigprov) + pData->sigprovFileData = pCache[i]->sigprovFileData; + pData->iCurrElt = i; + pCache[i]->clkTickAccessed = getClockFileAccess(); /* update "timestamp" for LRU */ + FINALIZE; + } + /* did not find it - so lets keep track of the counters for LRU */ + if(pCache[i]->clkTickAccessed < ctOldest) { + ctOldest = pCache[i]->clkTickAccessed; + iOldest = i; + } + } + } + + /* we have not found an entry */ + STATSCOUNTER_INC(pData->ctrMiss, pData->mutCtrMiss); + + /* similarly, we need to set the current pStrm to NULL, because otherwise, if prepareFile() fails, + * we may end up using an old stream. This bug depends on how exactly prepareFile fails, + * but it could be triggered in the common case of a failed open() system call. + * rgerhards, 2010-03-22 + */ + pData->pStrm = NULL, pData->sigprovFileData = NULL; + + if(iFirstFree == -1 && (pData->iCurrCacheSize < pData->iDynaFileCacheSize)) { + /* there is space left, so set it to that index */ + iFirstFree = pData->iCurrCacheSize++; + STATSCOUNTER_SETMAX_NOMUT(pData->ctrMax, (unsigned) pData->iCurrCacheSize); + } + + /* Note that the following code sequence does not work with the cache entry itself, + * but rather with pData->pStrm, the (sole) stream pointer in the non-dynafile case. + * The cache array is only updated after the open was successful. -- rgerhards, 2010-03-21 + */ + if(iFirstFree == -1) { + dynaFileDelCacheEntry(pData, iOldest, 0); + STATSCOUNTER_INC(pData->ctrEvict, pData->mutCtrEvict); + iFirstFree = iOldest; /* this one *is* now free ;) */ + } else { + /* we need to allocate memory for the cache structure */ + CHKmalloc(pCache[iFirstFree] = (dynaFileCacheEntry*) calloc(1, sizeof(dynaFileCacheEntry))); + } + + /* Ok, we finally can open the file */ + localRet = prepareFile(pData, newFileName); /* ignore exact error, we check fd below */ + + /* check if we had an error */ + if(localRet != RS_RET_OK) { + /* We do no longer care about internal messages. The errmsg rate limiter + * will take care of too-frequent error messages. + */ + parser_errmsg("Could not open dynamic file '%s' [state %d]", newFileName, localRet); + ABORT_FINALIZE(localRet); + } + + localRet = fsCheck(pData, newFileName); + if(localRet != RS_RET_OK) { + parser_errmsg("Invalid file-system condition for dynamic file '%s' [state %d]", newFileName, localRet); + ABORT_FINALIZE(localRet); + } + + if((pCache[iFirstFree]->pName = ustrdup(newFileName)) == NULL) { + closeFile(pData); /* need to free failed entry! */ + ABORT_FINALIZE(RS_RET_OUT_OF_MEMORY); + } + pCache[iFirstFree]->pStrm = pData->pStrm; + if(pData->useSigprov) + pCache[iFirstFree]->sigprovFileData = pData->sigprovFileData; + pCache[iFirstFree]->clkTickAccessed = getClockFileAccess(); + pData->iCurrElt = iFirstFree; + DBGPRINTF("Added new entry %d for file cache, file '%s'.\n", iFirstFree, newFileName); + +finalize_it: + if(iRet == RS_RET_OK) + pCache[pData->iCurrElt]->nInactive = 0; + RETiRet; +} + + +/* do the actual write process. This function is to be called once we are ready for writing. + * It will do buffered writes and persist data only when the buffer is full. Note that we must + * be careful to detect when the file handle changed. + * rgerhards, 2009-06-03 + */ +static rsRetVal +doWrite(instanceData *__restrict__ const pData, uchar *__restrict__ const pszBuf, const int lenBuf) +{ + DEFiRet; + assert(pData != NULL); + assert(pszBuf != NULL); + + DBGPRINTF("omfile: write to stream, pData->pStrm %p, lenBuf %d, strt data %.128s\n", + pData->pStrm, lenBuf, pszBuf); + if(pData->pStrm != NULL){ + CHKiRet(strm.Write(pData->pStrm, pszBuf, lenBuf)); + if(pData->useSigprov) { + CHKiRet(pData->sigprov.OnRecordWrite(pData->sigprovFileData, pszBuf, lenBuf)); + } + } + +finalize_it: + RETiRet; +} + +/* rgerhards 2004-11-11: write to a file output. */ +static rsRetVal +writeFile(instanceData *__restrict__ const pData, + const actWrkrIParams_t *__restrict__ const pParam, + const int iMsg) +{ + DEFiRet; + + STATSCOUNTER_INC(pData->ctrRequests, pData->mutCtrRequests); + /* first check if we have a dynamic file name and, if so, + * check if it still is ok or a new file needs to be created + */ + if(pData->bDynamicName) { + DBGPRINTF("omfile: file to log to: %s\n", + actParam(pParam, pData->iNumTpls, iMsg, 1).param); + CHKiRet(prepareDynFile(pData, actParam(pParam, pData->iNumTpls, iMsg, 1).param)); + } else { /* "regular", non-dynafile */ + if(pData->pStrm == NULL) { + CHKiRet(prepareFile(pData, pData->fname)); + if(pData->pStrm == NULL) { + parser_errmsg( + "Could not open output file '%s'", pData->fname); + } + CHKiRet(fsCheck(pData, pData->fname)); + } + pData->nInactive = 0; + } + + iRet = doWrite(pData, actParam(pParam, pData->iNumTpls, iMsg, 0).param, + actParam(pParam, pData->iNumTpls, iMsg, 0).lenStr); + +finalize_it: + RETiRet; +} + + +BEGINbeginCnfLoad +CODESTARTbeginCnfLoad + loadModConf = pModConf; + pModConf->pConf = pConf; + pModConf->tplName = NULL; + pModConf->fCreateMode = 0644; + pModConf->fDirCreateMode = 0700; + pModConf->fileUID = -1; + pModConf->dirUID = -1; + pModConf->fileGID = -1; + pModConf->dirGID = -1; + pModConf->bDynafileDoNotSuspend = 1; +ENDbeginCnfLoad + +BEGINsetModCnf + struct cnfparamvals *pvals = NULL; + int i; +CODESTARTsetModCnf + pvals = nvlstGetParams(lst, &modpblk, NULL); + if(pvals == NULL) { + parser_errmsg("error processing module " + "config parameters [module(...)]"); + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + if(Debug) { + dbgprintf("module (global) param blk for omfile:\n"); + cnfparamsPrint(&modpblk, pvals); + } + + for(i = 0 ; i < modpblk.nParams ; ++i) { + if(!pvals[i].bUsed) { + continue; + } + + if(!strcmp(modpblk.descr[i].name, "template")) { + loadModConf->tplName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + if(pszFileDfltTplName != NULL) { + parser_errmsg("omfile: warning: default template was already " + "set via legacy directive - may lead to inconsistent " + "results."); + } + } else if(!strcmp(modpblk.descr[i].name, "dircreatemode")) { + loadModConf->fDirCreateMode = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "filecreatemode")) { + loadModConf->fCreateMode = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "dirowner")) { + loadModConf->dirUID = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "dirownernum")) { + loadModConf->dirUID = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "dirgroup")) { + loadModConf->dirGID = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "dirgroupnum")) { + loadModConf->dirGID = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "fileowner")) { + loadModConf->fileUID = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "fileownernum")) { + loadModConf->fileUID = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "filegroup")) { + loadModConf->fileGID = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "filegroupnum")) { + loadModConf->fileGID = (int) pvals[i].val.d.n; + } else if(!strcmp(modpblk.descr[i].name, "dynafile.donotsuspend")) { + loadModConf->bDynafileDoNotSuspend = (int) pvals[i].val.d.n; + } else { + dbgprintf("omfile: program error, non-handled " + "param '%s' in beginCnfLoad\n", modpblk.descr[i].name); + } + } +finalize_it: + if(pvals != NULL) + cnfparamvalsDestruct(pvals, &modpblk); +ENDsetModCnf + +/* This function checks dynafile cache for janitor action */ +static void +janitorChkDynaFiles(instanceData *__restrict__ const pData) +{ + uint i; + dynaFileCacheEntry **pCache = pData->dynCache; + + for(i = 0 ; i < pData->iCurrCacheSize ; ++i) { + if(pCache[i] == NULL) + continue; + DBGPRINTF("omfile janitor: checking dynafile %d:%s, inactive since %d\n", i, + pCache[i]->pName == NULL ? UCHAR_CONSTANT("[OPEN FAILED]") : pCache[i]->pName, + (int) pCache[i]->nInactive); + if(pCache[i]->nInactive >= pData->iCloseTimeout) { + STATSCOUNTER_INC(pData->ctrCloseTimeouts, pData->mutCtrCloseTimeouts); + dynaFileDelCacheEntry(pData, i, 1); + if(pData->iCurrElt >= 0) { + if((uint)(pData->iCurrElt) == i) + pData->iCurrElt = -1; /* no longer available! */ + } + } else { + pCache[i]->nInactive += runModConf->pConf->globals.janitorInterval; + } + } +} + +/* callback for the janitor. This cleans out files (if so configured) */ +static void +janitorCB(void *pUsr) +{ + instanceData *__restrict__ const pData = (instanceData *) pUsr; + pthread_mutex_lock(&pData->mutWrite); + if(pData->bDynamicName) { + janitorChkDynaFiles(pData); + } else { + if(pData->pStrm != NULL) { + DBGPRINTF("omfile janitor: checking file %s, inactive since %d\n", + pData->fname, pData->nInactive); + if(pData->nInactive >= pData->iCloseTimeout) { + STATSCOUNTER_INC(pData->ctrCloseTimeouts, pData->mutCtrCloseTimeouts); + closeFile(pData); + } else { + pData->nInactive += runModConf->pConf->globals.janitorInterval; + } + } + } + pthread_mutex_unlock(&pData->mutWrite); +} + + +BEGINendCnfLoad +CODESTARTendCnfLoad + loadModConf = NULL; /* done loading */ + /* free legacy config vars */ + free(pszFileDfltTplName); + pszFileDfltTplName = NULL; +ENDendCnfLoad + +BEGINcheckCnf +CODESTARTcheckCnf +ENDcheckCnf + +BEGINactivateCnf +CODESTARTactivateCnf + runModConf = pModConf; +ENDactivateCnf + +BEGINfreeCnf +CODESTARTfreeCnf + free(pModConf->tplName); +ENDfreeCnf + + +BEGINcreateInstance +CODESTARTcreateInstance + pData->pStrm = NULL; + pthread_mutex_init(&pData->mutWrite, NULL); +ENDcreateInstance + + +BEGINcreateWrkrInstance +CODESTARTcreateWrkrInstance +ENDcreateWrkrInstance + + +BEGINfreeInstance +CODESTARTfreeInstance + free(pData->tplName); + free(pData->fname); + if(pData->iCloseTimeout > 0) + janitorDelEtry(pData->janitorID); + if(pData->bDynamicName) { + dynaFileFreeCache(pData); + } else if(pData->pStrm != NULL) + closeFile(pData); + if(pData->stats != NULL) + statsobj.Destruct(&(pData->stats)); + if(pData->useSigprov) { + pData->sigprov.Destruct(&pData->sigprovData); + obj.ReleaseObj(__FILE__, pData->sigprovNameFull+2, pData->sigprovNameFull, + (void*) &pData->sigprov); + free(pData->sigprovName); + free(pData->sigprovNameFull); + } + if(pData->useCryprov) { + pData->cryprov.Destruct(&pData->cryprovData); + obj.ReleaseObj(__FILE__, pData->cryprovNameFull+2, pData->cryprovNameFull, + (void*) &pData->cryprov); + free(pData->cryprovName); + free(pData->cryprovNameFull); + } + pthread_mutex_destroy(&pData->mutWrite); +ENDfreeInstance + + +BEGINfreeWrkrInstance +CODESTARTfreeWrkrInstance +ENDfreeWrkrInstance + + +BEGINtryResume +CODESTARTtryResume +ENDtryResume + +BEGINbeginTransaction +CODESTARTbeginTransaction + /* we have nothing to do to begin a transaction */ +ENDbeginTransaction + + +BEGINcommitTransaction + instanceData *__restrict__ const pData = pWrkrData->pData; + unsigned i; +CODESTARTcommitTransaction + pthread_mutex_lock(&pData->mutWrite); + + for(i = 0 ; i < nParams ; ++i) { + CHKiRet(writeFile(pData, pParams, i)); + } + /* Note: pStrm may be NULL if there was an error opening the stream */ + /* if bFlushOnTXEnd is set, we need to flush on transaction end - in + * any case. It is not relevant if this is using background writes + * (which then become pretty slow) or not. And, similarly, no flush + * happens when it is not set. Please see + * https://github.com/rsyslog/rsyslog/issues/1297 + * for a discussion of why we actually need this. + * rgerhards, 2017-01-13 + */ + if(pData->bFlushOnTXEnd && pData->pStrm != NULL) { + CHKiRet(strm.Flush(pData->pStrm)); + } + +finalize_it: + if (iRet != RS_RET_OK) { + if (runModConf->bDynafileDoNotSuspend == 0 || !(pData->bDynamicName)) { + LogError(0, iRet, "suspending action"); + iRet = RS_RET_SUSPENDED; + } + else { + LogError(0, iRet, "discarding message"); + } + } + pthread_mutex_unlock(&pData->mutWrite); +ENDcommitTransaction + + +static void +setInstParamDefaults(instanceData *__restrict__ const pData) +{ + pData->fname = NULL; + pData->tplName = NULL; + pData->fileUID = loadModConf->fileUID; + pData->fileGID = loadModConf->fileGID; + pData->dirUID = loadModConf->dirUID; + pData->dirGID = loadModConf->dirGID; + pData->bFailOnChown = 1; + pData->iDynaFileCacheSize = 10; + pData->fCreateMode = loadModConf->fCreateMode; + pData->fDirCreateMode = loadModConf->fDirCreateMode; + pData->bCreateDirs = 1; + pData->bSyncFile = 0; + pData->iZipLevel = 0; + pData->bVeryRobustZip = 0; + pData->bFlushOnTXEnd = FLUSHONTX_DFLT; + pData->iIOBufSize = IOBUF_DFLT_SIZE; + pData->iFlushInterval = FLUSH_INTRVL_DFLT; + pData->bUseAsyncWriter = USE_ASYNCWRITER_DFLT; + pData->sigprovName = NULL; + pData->cryprovName = NULL; + pData->useSigprov = 0; + pData->useCryprov = 0; + pData->iCloseTimeout = -1; +} + + +static rsRetVal +setupInstStatsCtrs(instanceData *__restrict__ const pData) +{ + uchar ctrName[512]; + DEFiRet; + + if(!pData->bDynamicName) { + FINALIZE; + } + + /* support statistics gathering */ + snprintf((char*)ctrName, sizeof(ctrName), "dynafile cache %s", pData->fname); + ctrName[sizeof(ctrName)-1] = '\0'; /* be on the save side */ + CHKiRet(statsobj.Construct(&(pData->stats))); + CHKiRet(statsobj.SetName(pData->stats, ctrName)); + CHKiRet(statsobj.SetOrigin(pData->stats, (uchar*)"omfile")); + STATSCOUNTER_INIT(pData->ctrRequests, pData->mutCtrRequests); + CHKiRet(statsobj.AddCounter(pData->stats, UCHAR_CONSTANT("requests"), + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &(pData->ctrRequests))); + STATSCOUNTER_INIT(pData->ctrLevel0, pData->mutCtrLevel0); + CHKiRet(statsobj.AddCounter(pData->stats, UCHAR_CONSTANT("level0"), + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &(pData->ctrLevel0))); + STATSCOUNTER_INIT(pData->ctrMiss, pData->mutCtrMiss); + CHKiRet(statsobj.AddCounter(pData->stats, UCHAR_CONSTANT("missed"), + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &(pData->ctrMiss))); + STATSCOUNTER_INIT(pData->ctrEvict, pData->mutCtrEvict); + CHKiRet(statsobj.AddCounter(pData->stats, UCHAR_CONSTANT("evicted"), + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &(pData->ctrEvict))); + STATSCOUNTER_INIT(pData->ctrMax, pData->mutCtrMax); + CHKiRet(statsobj.AddCounter(pData->stats, UCHAR_CONSTANT("maxused"), + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &(pData->ctrMax))); + STATSCOUNTER_INIT(pData->ctrCloseTimeouts, pData->mutCtrCloseTimeouts); + CHKiRet(statsobj.AddCounter(pData->stats, UCHAR_CONSTANT("closetimeouts"), + ctrType_IntCtr, CTR_FLAG_RESETTABLE, &(pData->ctrCloseTimeouts))); + CHKiRet(statsobj.ConstructFinalize(pData->stats)); + +finalize_it: + RETiRet; +} + +static void +initSigprov(instanceData *__restrict__ const pData, struct nvlst *lst) +{ + uchar szDrvrName[1024]; + + if(snprintf((char*)szDrvrName, sizeof(szDrvrName), "lmsig_%s", pData->sigprovName) + == sizeof(szDrvrName)) { + parser_errmsg("omfile: signature provider " + "name is too long: '%s' - signatures disabled", + pData->sigprovName); + goto done; + } + pData->sigprovNameFull = ustrdup(szDrvrName); + + pData->sigprov.ifVersion = sigprovCURR_IF_VERSION; + /* The pDrvrName+2 below is a hack to obtain the object name. It + * safes us to have yet another variable with the name without "lm" in + * front of it. If we change the module load interface, we may re-think + * about this hack, but for the time being it is efficient and clean enough. + */ + if(obj.UseObj(__FILE__, szDrvrName, szDrvrName, (void*) &pData->sigprov) + != RS_RET_OK) { + parser_errmsg("omfile: could not load " + "signature provider '%s' - signatures disabled", + szDrvrName); + goto done; + } + + if(pData->sigprov.Construct(&pData->sigprovData) != RS_RET_OK) { + parser_errmsg("omfile: error constructing " + "signature provider %s dataset - signatures disabled", + szDrvrName); + goto done; + } + pData->sigprov.SetCnfParam(pData->sigprovData, lst); + + dbgprintf("loaded signature provider %s, data instance at %p\n", + szDrvrName, pData->sigprovData); + pData->useSigprov = 1; +done: return; +} + +static rsRetVal +initCryprov(instanceData *__restrict__ const pData, struct nvlst *lst) +{ + uchar szDrvrName[1024]; + DEFiRet; + + if(snprintf((char*)szDrvrName, sizeof(szDrvrName), "lmcry_%s", pData->cryprovName) + == sizeof(szDrvrName)) { + parser_errmsg("omfile: crypto provider " + "name is too long: '%s' - encryption disabled", + pData->cryprovName); + ABORT_FINALIZE(RS_RET_ERR); + } + pData->cryprovNameFull = ustrdup(szDrvrName); + + pData->cryprov.ifVersion = cryprovCURR_IF_VERSION; + /* The pDrvrName+2 below is a hack to obtain the object name. It + * safes us to have yet another variable with the name without "lm" in + * front of it. If we change the module load interface, we may re-think + * about this hack, but for the time being it is efficient and clean enough. + */ + if(obj.UseObj(__FILE__, szDrvrName, szDrvrName, (void*) &pData->cryprov) + != RS_RET_OK) { + parser_errmsg("omfile: could not load " + "crypto provider '%s' - encryption disabled", + szDrvrName); + ABORT_FINALIZE(RS_RET_CRYPROV_ERR); + } + + if(pData->cryprov.Construct(&pData->cryprovData) != RS_RET_OK) { + parser_errmsg("omfile: error constructing " + "crypto provider %s dataset - encryption disabled", + szDrvrName); + ABORT_FINALIZE(RS_RET_CRYPROV_ERR); + } + CHKiRet(pData->cryprov.SetCnfParam(pData->cryprovData, lst, CRYPROV_PARAMTYPE_REGULAR)); + + dbgprintf("loaded crypto provider %s, data instance at %p\n", + szDrvrName, pData->cryprovData); + pData->useCryprov = 1; +finalize_it: + RETiRet; +} + +BEGINnewActInst + struct cnfparamvals *pvals; + uchar *tplToUse; + int i; +CODESTARTnewActInst + DBGPRINTF("newActInst (omfile)\n"); + + pvals = nvlstGetParams(lst, &actpblk, NULL); + if(pvals == NULL) { + parser_errmsg("omfile: either the \"file\" or " + "\"dynafile\" parameter must be given"); + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + if(Debug) { + dbgprintf("action param blk in omfile:\n"); + cnfparamsPrint(&actpblk, pvals); + } + + CHKiRet(createInstance(&pData)); + setInstParamDefaults(pData); + + for(i = 0 ; i < actpblk.nParams ; ++i) { + if(!pvals[i].bUsed) + continue; + if(!strcmp(actpblk.descr[i].name, "dynafilecachesize")) { + pData->iDynaFileCacheSize = (uint) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "ziplevel")) { + pData->iZipLevel = (int) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "flushinterval")) { + pData->iFlushInterval = pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "veryrobustzip")) { + pData->bVeryRobustZip = pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "asyncwriting")) { + pData->bUseAsyncWriter = pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "flushontxend")) { + pData->bFlushOnTXEnd = pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "iobuffersize")) { + pData->iIOBufSize = (uint) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "dirowner")) { + pData->dirUID = (int) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "dirownernum")) { + pData->dirUID = (int) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "dirgroup")) { + pData->dirGID = (int) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "dirgroupnum")) { + pData->dirGID = (int) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "fileowner")) { + pData->fileUID = (int) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "fileownernum")) { + pData->fileUID = (int) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "filegroup")) { + pData->fileGID = (int) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "filegroupnum")) { + pData->fileGID = (int) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "dircreatemode")) { + pData->fDirCreateMode = (int) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "filecreatemode")) { + pData->fCreateMode = (int) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "failonchownfailure")) { + pData->bFailOnChown = (int) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "sync")) { + pData->bSyncFile = (int) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "createdirs")) { + pData->bCreateDirs = (int) pvals[i].val.d.n; + } else if(!strcmp(actpblk.descr[i].name, "file")) { + pData->fname = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + CODE_STD_STRING_REQUESTnewActInst(1) + pData->bDynamicName = 0; + } else if(!strcmp(actpblk.descr[i].name, "dynafile")) { + if(pData->fname != NULL) { + parser_errmsg("omfile: both \"file\" and \"dynafile\" set, will use dynafile"); + } + pData->fname = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + CODE_STD_STRING_REQUESTnewActInst(2) + pData->bDynamicName = 1; + } else if(!strcmp(actpblk.descr[i].name, "template")) { + pData->tplName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "sig.provider")) { + pData->sigprovName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "cry.provider")) { + pData->cryprovName = (uchar*)es_str2cstr(pvals[i].val.d.estr, NULL); + } else if(!strcmp(actpblk.descr[i].name, "closetimeout")) { + pData->iCloseTimeout = (int) pvals[i].val.d.n; + } else { + dbgprintf("omfile: program error, non-handled " + "param '%s'\n", actpblk.descr[i].name); + } + } + + if(pData->fname == NULL) { + parser_errmsg("omfile: either the \"file\" or " + "\"dynafile\" parameter must be given"); + ABORT_FINALIZE(RS_RET_MISSING_CNFPARAMS); + } + + if(pData->sigprovName != NULL) { + initSigprov(pData, lst); + } + + if(pData->cryprovName != NULL) { + CHKiRet(initCryprov(pData, lst)); + } + + tplToUse = ustrdup((pData->tplName == NULL) ? getDfltTpl() : pData->tplName); + CHKiRet(OMSRsetEntry(*ppOMSR, 0, tplToUse, OMSR_NO_RQD_TPL_OPTS)); + pData->iNumTpls = 1; + + if(pData->bDynamicName) { + /* "filename" is actually a template name, we need this as string 1. So let's add it + * to the pOMSR. -- rgerhards, 2007-07-27 + */ + CHKiRet(OMSRsetEntry(*ppOMSR, 1, ustrdup(pData->fname), OMSR_NO_RQD_TPL_OPTS)); + pData->iNumTpls = 2; + // TODO: create unified code for this (legacy+v6 system) + /* we now allocate the cache table */ + CHKmalloc(pData->dynCache = (dynaFileCacheEntry**) + calloc(pData->iDynaFileCacheSize, sizeof(dynaFileCacheEntry*))); + pData->iCurrElt = -1; /* no current element */ + } +// TODO: add pData->iSizeLimit = 0; /* default value, use outchannels to configure! */ + setupInstStatsCtrs(pData); + + if(pData->iCloseTimeout == -1) { /* unset? */ + pData->iCloseTimeout = (pData->bDynamicName) ? 10 : 0; + } + + snprintf(pData->janitorID, sizeof(pData->janitorID), "omfile:%sfile:%s:%p", + (pData->bDynamicName) ? "dyna" : "", pData->fname, pData); + pData->janitorID[sizeof(pData->janitorID)-1] = '\0'; /* just in case... */ + + if(pData->iCloseTimeout > 0) + janitorAddEtry(janitorCB, pData->janitorID, pData); + +CODE_STD_FINALIZERnewActInst + cnfparamvalsDestruct(pvals, &actpblk); +ENDnewActInst + + +BEGINparseSelectorAct + uchar fname[MAXFNAME]; +CODESTARTparseSelectorAct + /* Note: the indicator sequence permits us to use '$' to signify + * outchannel, what otherwise is not possible due to truely + * unresolvable grammar conflicts (*this time no way around*). + * rgerhards, 2011-07-09 + */ + if(!strncmp((char*) p, ":omfile:", sizeof(":omfile:") - 1)) { + p += sizeof(":omfile:") - 1; + } + if(!(*p == '$' || *p == '?' || *p == '/' || *p == '.' || *p == '-')) + ABORT_FINALIZE(RS_RET_CONFLINE_UNPROCESSED); + + CHKiRet(createInstance(&pData)); + + if(*p == '-') { + pData->bSyncFile = 0; + p++; + } else { + pData->bSyncFile = cs.bEnableSync; + } + pData->iSizeLimit = 0; /* default value, use outchannels to configure! */ + + switch(*p) { + case '$': + CODE_STD_STRING_REQUESTparseSelectorAct(1) + pData->iNumTpls = 1; + /* rgerhards 2005-06-21: this is a special setting for output-channel + * definitions. In the long term, this setting will probably replace + * anything else, but for the time being we must co-exist with the + * traditional mode lines. + * rgerhards, 2007-07-24: output-channels will go away. We keep them + * for compatibility reasons, but seems to have been a bad idea. + */ + CHKiRet(cflineParseOutchannel(pData, p, *ppOMSR, 0, OMSR_NO_RQD_TPL_OPTS)); + pData->bDynamicName = 0; + break; + + case '?': /* This is much like a regular file handle, but we need to obtain + * a template name. rgerhards, 2007-07-03 + */ + CODE_STD_STRING_REQUESTparseSelectorAct(2) + pData->iNumTpls = 2; + ++p; /* eat '?' */ + CHKiRet(cflineParseFileName(p, fname, *ppOMSR, 0, OMSR_NO_RQD_TPL_OPTS, getDfltTpl())); + pData->fname = ustrdup(fname); + pData->bDynamicName = 1; + pData->iCurrElt = -1; /* no current element */ + /* "filename" is actually a template name, we need this as string 1. So let's add it + * to the pOMSR. -- rgerhards, 2007-07-27 + */ + CHKiRet(OMSRsetEntry(*ppOMSR, 1, ustrdup(pData->fname), OMSR_NO_RQD_TPL_OPTS)); + /* we now allocate the cache table */ + CHKmalloc(pData->dynCache = (dynaFileCacheEntry**) + calloc(cs.iDynaFileCacheSize, sizeof(dynaFileCacheEntry*))); + break; + + case '/': + case '.': + CODE_STD_STRING_REQUESTparseSelectorAct(1) + pData->iNumTpls = 1; + CHKiRet(cflineParseFileName(p, fname, *ppOMSR, 0, OMSR_NO_RQD_TPL_OPTS, getDfltTpl())); + pData->fname = ustrdup(fname); + pData->bDynamicName = 0; + break; + default: + ABORT_FINALIZE(RS_RET_CONFLINE_UNPROCESSED); + } + + /* freeze current paremeters for this action */ + pData->iDynaFileCacheSize = cs.iDynaFileCacheSize; + pData->fCreateMode = cs.fCreateMode; + pData->fDirCreateMode = cs.fDirCreateMode; + pData->bCreateDirs = cs.bCreateDirs; + pData->bFailOnChown = cs.bFailOnChown; + pData->fileUID = cs.fileUID; + pData->fileGID = cs.fileGID; + pData->dirUID = cs.dirUID; + pData->dirGID = cs.dirGID; + pData->iZipLevel = cs.iZipLevel; + pData->bFlushOnTXEnd = cs.bFlushOnTXEnd; + pData->iIOBufSize = (uint) cs.iIOBufSize; + pData->iFlushInterval = cs.iFlushInterval; + pData->bUseAsyncWriter = cs.bUseAsyncWriter; + pData->bVeryRobustZip = 0; /* cannot be specified via legacy conf */ + pData->iCloseTimeout = 0; /* cannot be specified via legacy conf */ + setupInstStatsCtrs(pData); +CODE_STD_FINALIZERparseSelectorAct +ENDparseSelectorAct + + +/* Reset config variables for this module to default values. + * rgerhards, 2007-07-17 + */ +static rsRetVal resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal) +{ + cs.fileUID = -1; + cs.fileGID = -1; + cs.dirUID = -1; + cs.dirGID = -1; + cs.bFailOnChown = 1; + cs.iDynaFileCacheSize = 10; + cs.fCreateMode = 0644; + cs.fDirCreateMode = 0700; + cs.bCreateDirs = 1; + cs.bEnableSync = 0; + cs.iZipLevel = 0; + cs.bFlushOnTXEnd = FLUSHONTX_DFLT; + cs.iIOBufSize = IOBUF_DFLT_SIZE; + cs.iFlushInterval = FLUSH_INTRVL_DFLT; + cs.bUseAsyncWriter = USE_ASYNCWRITER_DFLT; + free(pszFileDfltTplName); + pszFileDfltTplName = NULL; + return RS_RET_OK; +} + + +BEGINdoHUP +CODESTARTdoHUP + pthread_mutex_lock(&pData->mutWrite); + if(pData->bDynamicName) { + dynaFileFreeCacheEntries(pData); + } else { + if(pData->pStrm != NULL) { + closeFile(pData); + } + } + pthread_mutex_unlock(&pData->mutWrite); +ENDdoHUP + + +BEGINmodExit +CODESTARTmodExit + objRelease(glbl, CORE_COMPONENT); + objRelease(strm, CORE_COMPONENT); + objRelease(statsobj, CORE_COMPONENT); + DESTROY_ATOMIC_HELPER_MUT(mutClock); +ENDmodExit + + +BEGINqueryEtryPt +CODESTARTqueryEtryPt +CODEqueryEtryPt_STD_OMODTX_QUERIES +CODEqueryEtryPt_STD_OMOD8_QUERIES +CODEqueryEtryPt_STD_CONF2_QUERIES +CODEqueryEtryPt_STD_CONF2_setModCnf_QUERIES +CODEqueryEtryPt_STD_CONF2_OMOD_QUERIES +CODEqueryEtryPt_doHUP +ENDqueryEtryPt + + +BEGINmodInit(File) +CODESTARTmodInit + *ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */ +CODEmodInit_QueryRegCFSLineHdlr +INITLegCnfVars + CHKiRet(objUse(strm, CORE_COMPONENT)); + CHKiRet(objUse(statsobj, CORE_COMPONENT)); + + INIT_ATOMIC_HELPER_MUT(mutClock); + + INITChkCoreFeature(bCoreSupportsBatching, CORE_FEATURE_BATCHING); + DBGPRINTF("omfile: %susing transactional output interface.\n", bCoreSupportsBatching ? "" : "not "); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"dynafilecachesize", 0, eCmdHdlrInt, setDynaFileCacheSize, + NULL, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"omfileziplevel", 0, eCmdHdlrInt, NULL, &cs.iZipLevel, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"omfileflushinterval", 0, eCmdHdlrInt, NULL, &cs.iFlushInterval, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"omfileasyncwriting", 0, eCmdHdlrBinary, NULL, &cs.bUseAsyncWriter, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"omfileflushontxend", 0, eCmdHdlrBinary, NULL, &cs.bFlushOnTXEnd, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"omfileiobuffersize", 0, eCmdHdlrSize, NULL, &cs.iIOBufSize, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"dirowner", 0, eCmdHdlrUID, NULL, &cs.dirUID, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"dirownernum", 0, eCmdHdlrInt, NULL, &cs.dirUID, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"dirgroup", 0, eCmdHdlrGID, NULL, &cs.dirGID, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"dirgroupnum", 0, eCmdHdlrInt, NULL, &cs.dirGID, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"fileowner", 0, eCmdHdlrUID, NULL, &cs.fileUID, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"fileownernum", 0, eCmdHdlrInt, NULL, &cs.fileUID, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"filegroup", 0, eCmdHdlrGID, NULL, &cs.fileGID, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"filegroupnum", 0, eCmdHdlrInt, NULL, &cs.fileGID, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"dircreatemode", 0, eCmdHdlrFileCreateMode, NULL, + &cs.fDirCreateMode, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"filecreatemode", 0, eCmdHdlrFileCreateMode, NULL, + &cs.fCreateMode, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"createdirs", 0, eCmdHdlrBinary, NULL, &cs.bCreateDirs, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"failonchownfailure", 0, eCmdHdlrBinary, NULL, &cs.bFailOnChown, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"omfileforcechown", 0, eCmdHdlrGoneAway, NULL, NULL, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"actionfileenablesync", 0, eCmdHdlrBinary, NULL, &cs.bEnableSync, + STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"actionfiledefaulttemplate", 0, eCmdHdlrGetWord, setLegacyDfltTpl, + NULL, STD_LOADABLE_MODULE_ID)); + CHKiRet(omsdRegCFSLineHdlr((uchar *)"resetconfigvariables", 1, eCmdHdlrCustomHandler, resetConfigVariables, + NULL, STD_LOADABLE_MODULE_ID)); + CHKiRet(objUse(glbl, CORE_COMPONENT)); +ENDmodInit |