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author	akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>	2009-02-04 15:12:53 +0000
committer	akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>	2009-02-04 15:12:53 +0000
commit	d961c653b92b7b19b797ecef03270346035133eb (patch)
tree	3228e0457b774e7463dae04e8b0d48fc53884ede /lib
parent	b2c9a6d13341a26d974030971472845f6d9ab230 (diff)

relax tests for MacOS X.

git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@22044 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

Diffstat (limited to 'lib')

0 files changed, 0 insertions, 0 deletions

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/* The config file handler (not yet a real object)
 *
 * This file is based on an excerpt from syslogd.c, which dates back
 * much later. I began the file on 2008-02-19 as part of the modularization
 * effort. Over time, a clean abstration will become even more important
 * because the config file handler will by dynamically be loaded and be
 * kept in memory only as long as the config file is actually being 
 * processed. Thereafter, it shall be unloaded. -- rgerhards
 *
 * TODO: the license MUST be changed to LGPL. However, we can not
 * currently do that, because we use some sysklogd code to crunch
 * the selector lines (e.g. *.info). That code is scheduled for removal
 * as part of RainerScript. After this is done, we can change licenses.
 *
 * Copyright 2008 Rainer Gerhards and Adiscon GmbH.
 *
 * This file is part of rsyslog.
 *
 * Rsyslog is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Rsyslog is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Rsyslog.  If not, see <http://www.gnu.org/licenses/>.
 *
 * A copy of the GPL can be found in the file "COPYING" in this distribution.
 */
#define CFGLNSIZ 4096 /* the maximum size of a configuraton file line, after re-combination */
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <stddef.h>
#include <string.h>
#include <dlfcn.h>
#include <sys/stat.h>
#include <errno.h>
#include <ctype.h>
#include <assert.h>
#include <dirent.h>
#include <glob.h>
#include <sys/types.h>
#ifdef HAVE_LIBGEN_H
#	ifndef OS_SOLARIS
#		include <libgen.h>
#	endif
#endif

#include "rsyslog.h"
#include "../tools/syslogd.h" /* TODO: this must be removed! */
#include "dirty.h"
#include "parse.h"
#include "action.h"
#include "template.h"
#include "cfsysline.h"
#include "modules.h"
#include "outchannel.h"
#include "stringbuf.h"
#include "conf.h"
#include "stringbuf.h"
#include "srUtils.h"
#include "errmsg.h"
#include "net.h"
#include "expr.h"
#include "ctok.h"
#include "ctok_token.h"

#ifdef OS_SOLARIS
#	define NAME_MAX MAXNAMELEN
#endif

/* forward definitions */
static rsRetVal cfline(uchar *line, selector_t **pfCurr);
static rsRetVal processConfFile(uchar *pConfFile);


/* static data */
DEFobjStaticHelpers
DEFobjCurrIf(expr)
DEFobjCurrIf(ctok)
DEFobjCurrIf(ctok_token)
DEFobjCurrIf(module)
DEFobjCurrIf(errmsg)
DEFobjCurrIf(net)

static int iNbrActions; /* number of actions the running config has. Needs to be init on ReInitConf() */

/* The following global variables are used for building
 * tag and host selector lines during startup and config reload.
 * This is stored as a global variable pool because of its ease. It is
 * also fairly compatible with multi-threading as the stratup code must
 * be run in a single thread anyways. So there can be no race conditions. These
 * variables are no longer used once the configuration has been loaded (except,
 * of course, during a reload). rgerhards 2005-10-18
 */
EHostnameCmpMode eDfltHostnameCmpMode;
cstr_t *pDfltHostnameCmp;
cstr_t *pDfltProgNameCmp;


/* process a directory and include all of its files into
 * the current config file. There is no specific order of inclusion,
 * files are included in the order they are read from the directory.
 * The caller must have make sure that the provided parameter is
 * indeed a directory.
 * rgerhards, 2007-08-01
 */
static rsRetVal doIncludeDirectory(uchar *pDirName)
{
	DEFiRet;
	int iEntriesDone = 0;
	DIR *pDir;
	union {
              struct dirent d;
              char b[offsetof(struct dirent, d_name) + NAME_MAX + 1];
	} u;
	struct dirent *res;
	size_t iDirNameLen;
	size_t iFileNameLen;
	uchar szFullFileName[MAXFNAME];

	ASSERT(pDirName != NULL);

	if((pDir = opendir((char*) pDirName)) == NULL) {
		errmsg.LogError(errno, RS_RET_FOPEN_FAILURE, "error opening include directory");
		ABORT_FINALIZE(RS_RET_FOPEN_FAILURE);
	}

	/* prepare file name buffer */
	iDirNameLen = strlen((char*) pDirName);
	memcpy(szFullFileName, pDirName, iDirNameLen);

	/* now read the directory */
	iEntriesDone = 0;
	while(readdir_r(pDir, &u.d, &res) == 0) {
		if(res == NULL)
			break; /* this also indicates end of directory */
#		ifdef DT_REG
		/* TODO: find an alternate way to checking for special files if this is
		 * not defined. This is currently a known problem on HP UX, but the work-
		 * around is simple: do not create special files in that directory. So 
		 * fixing this is actually not the most important thing on earth...
		 * rgerhards, 2008-03-04
		 */
		if(res->d_type != DT_REG)
			continue; /* we are not interested in special files */
#		endif
		if(res->d_name[0] == '.')
			continue; /* these files we are also not interested in */
		++iEntriesDone;
		/* construct filename */
		iFileNameLen = strlen(res->d_name);
		if (iFileNameLen > NAME_MAX)
			iFileNameLen = NAME_MAX;
		memcpy(szFullFileName + iDirNameLen, res->d_name, iFileNameLen);
		*(szFullFileName + iDirNameLen + iFileNameLen) = '\0';
		dbgprintf("including file '%s'\n", szFullFileName);
		processConfFile(szFullFileName);
		/* we deliberately ignore the iRet of processConfFile() - this is because
		 * failure to process one file does not mean all files will fail. By ignoring,
		 * we retry with the next file, which is the best thing we can do. -- rgerhards, 2007-08-01
		 */
	}

	if(iEntriesDone == 0) {
		/* I just make it a debug output, because I can think of a lot of cases where it
		 * makes sense not to have any files. E.g. a system maintainer may place a $Include
		 * into the config file just in case, when additional modules be installed. When none
		 * are installed, the directory will be empty, which is fine. -- rgerhards 2007-08-01
		 */
		dbgprintf("warning: the include directory contained no files - this may be ok.\n");
	}

finalize_it:
	if(pDir != NULL)
		closedir(pDir);

	RETiRet;
}


/* process a $include config line. That type of line requires
 * inclusion of another file.
 * rgerhards, 2007-08-01
 */
rsRetVal
doIncludeLine(uchar **pp, __attribute__((unused)) void* pVal)
{
	DEFiRet;
	char pattern[MAXFNAME];
	uchar *cfgFile;
	glob_t cfgFiles;
	int result;
	size_t i = 0;
	struct stat fileInfo;

	ASSERT(pp != NULL);
	ASSERT(*pp != NULL);

	if(getSubString(pp, (char*) pattern, sizeof(pattern) / sizeof(char), ' ')  != 0) {
		errmsg.LogError(0, RS_RET_NOT_FOUND, "could not parse config file name");
		ABORT_FINALIZE(RS_RET_NOT_FOUND);
	}

	/* Use GLOB_MARK to append a trailing slash for directories.
	 * Required by doIncludeDirectory().
	 */
	result = glob(pattern, GLOB_MARK, NULL, &cfgFiles);
	if(result == GLOB_NOSPACE || result == GLOB_ABORTED) {
		char errStr[1024];
		rs_strerror_r(errno, errStr, sizeof(errStr));
		errmsg.LogError(0, RS_RET_FILE_NOT_FOUND, "error accessing config file or directory '%s': %s",
				pattern, errStr);
		ABORT_FINALIZE(RS_RET_FILE_NOT_FOUND);
	}

	for(i = 0; i < cfgFiles.gl_pathc; i++) {
		cfgFile = (uchar*) cfgFiles.gl_pathv[i];

		if(stat((char*) cfgFile, &fileInfo) != 0) 
			continue; /* continue with the next file if we can't stat() the file */

		if(S_ISREG(fileInfo.st_mode)) { /* config file */
			dbgprintf("requested to include config file '%s'\n", cfgFile);
			iRet = processConfFile(cfgFile);
		} else if(S_ISDIR(fileInfo.st_mode)) { /* config directory */
			dbgprintf("requested to include directory '%s'\n", cfgFile);
			iRet = doIncludeDirectory(cfgFile);
		} else { /* TODO: shall we handle symlinks or not? */
			dbgprintf("warning: unable to process IncludeConfig directive '%s'\n", cfgFile);
		}
	}

	globfree(&cfgFiles);

finalize_it:
	RETiRet;
}


/* process a $ModLoad config line.
 */
rsRetVal
doModLoad(uchar **pp, __attribute__((unused)) void* pVal)
{
	DEFiRet;
	uchar szName[512];
	uchar *pModName;

	ASSERT(pp != NULL);
	ASSERT(*pp != NULL);

	skipWhiteSpace(pp); /* skip over any whitespace */
	if(getSubString(pp, (char*) szName, sizeof(szName) / sizeof(uchar), ' ')  != 0) {
		errmsg.LogError(0, RS_RET_NOT_FOUND, "could not extract module name");
		ABORT_FINALIZE(RS_RET_NOT_FOUND);
	}
	skipWhiteSpace(pp); /* skip over any whitespace */

	/* this below is a quick and dirty hack to provide compatibility with the
	 * $ModLoad MySQL forward compatibility statement. TODO: clean this up
	 * For the time being, it is clean enough, it just needs to be done
	 * differently when we have a full design for loadable plug-ins. For the
	 * time being, we just mangle the names a bit.
	 * rgerhards, 2007-08-14
	 */
	if(!strcmp((char*) szName, "MySQL"))
		pModName = (uchar*) "ommysql.so";
	else
		pModName = szName;

	CHKiRet(module.Load(pModName));

finalize_it:
	RETiRet;
}


/* parse and interpret a $-config line that starts with
 * a name (this is common code). It is parsed to the name
 * and then the proper sub-function is called to handle
 * the actual directive.
 * rgerhards 2004-11-17
 * rgerhards 2005-06-21: previously only for templates, now 
 *    generalized.
 */
rsRetVal
doNameLine(uchar **pp, void* pVal)
{
	DEFiRet;
	uchar *p;
	enum eDirective eDir;
	char szName[128];

	ASSERT(pp != NULL);
	p = *pp;
	ASSERT(p != NULL);

	eDir = (enum eDirective) pVal;	/* this time, it actually is NOT a pointer! */

	if(getSubString(&p, szName, sizeof(szName) / sizeof(char), ',')  != 0) {
		errmsg.LogError(0, RS_RET_NOT_FOUND, "Invalid config line: could not extract name - line ignored");
		ABORT_FINALIZE(RS_RET_NOT_FOUND);
	}
	if(*p == ',')
		++p; /* comma was eaten */
	
	/* we got the name - now we pass name & the rest of the string
	 * to the subfunction. It makes no sense to do further
	 * parsing here, as this is in close interaction with the
	 * respective subsystem. rgerhards 2004-11-17
	 */
	
	switch(eDir) {
		case DIR_TEMPLATE: 
			tplAddLine(szName, &p);
			break;
		case DIR_OUTCHANNEL: 
			ochAddLine(szName, &p);
			break;
		case DIR_ALLOWEDSENDER: 
			net.addAllowedSenderLine(szName, &p);
			break;
		default:/* we do this to avoid compiler warning - not all
			 * enum values call this function, so an incomplete list
			 * is quite ok (but then we should not run into this code,
			 * so at least we log a debug warning).
			 */
			dbgprintf("INTERNAL ERROR: doNameLine() called with invalid eDir %d.\n",
				eDir);
			break;
	}

	*pp = p;

finalize_it:
	RETiRet;
}


/* Parse and interpret a system-directive in the config line
 * A system directive is one that starts with a "$" sign. It offers
 * extended configuration parameters.
 * 2004-11-17 rgerhards
 */
rsRetVal
cfsysline(uchar *p)
{
	DEFiRet;
	uchar szCmd[64];

	ASSERT(p != NULL);
	errno = 0;
	if(getSubString(&p, (char*) szCmd, sizeof(szCmd) / sizeof(uchar), ' ')  != 0) {
		errmsg.LogError(0, RS_RET_NOT_FOUND, "Invalid $-configline - could not extract command - line ignored\n");
		ABORT_FINALIZE(RS_RET_NOT_FOUND);
	}

	/* we now try and see if we can find the command in the registered
	 * list of cfsysline handlers. -- rgerhards, 2007-07-31
	 */
	CHKiRet(processCfSysLineCommand(szCmd, &p));

	/* now check if we have some extra characters left on the line - that
	 * should not be the case. Whitespace is OK, but everything else should
	 * trigger a warning (that may be an indication of undesired behaviour).
	 * An exception, of course, are comments (starting with '#').
	 * rgerhards, 2007-07-04
	 */
	skipWhiteSpace(&p);

	if(*p && *p != '#') { /* we have a non-whitespace, so let's complain */
		errmsg.LogError(0, NO_ERRCODE, 
		         "error: extra characters in config line ignored: '%s'", p);
	}

finalize_it:
	RETiRet;
}




/* process a configuration file
 * started with code from init() by rgerhards on 2007-07-31
 */
static rsRetVal
processConfFile(uchar *pConfFile)
{
	DEFiRet;
	int iLnNbr = 0;
	FILE *cf;
	selector_t *fCurr = NULL;
	uchar *p;
	uchar cbuf[CFGLNSIZ];
	uchar *cline;
	int i;
	int bHadAnError = 0;
	ASSERT(pConfFile != NULL);

	if((cf = fopen((char*)pConfFile, "r")) == NULL) {
		ABORT_FINALIZE(RS_RET_FOPEN_FAILURE);
	}

	/* Now process the file.
	 */
	cline = cbuf;
	while (fgets((char*)cline, sizeof(cbuf) - (cline - cbuf), cf) != NULL) {
		++iLnNbr;
		/* drop LF - TODO: make it better, replace fgets(), but its clean as it is */
		if(cline[strlen((char*)cline)-1] == '\n') {
			cline[strlen((char*)cline) -1] = '\0';
		}
		/* check for end-of-section, comments, strip off trailing
		 * spaces and newline character.
		 */
		p = cline;
		skipWhiteSpace(&p);
		if (*p == '\0' || *p == '#')
			continue;

		/* we now need to copy the characters to the begin of line. As this overlaps,
		 * we can not use strcpy(). -- rgerhards, 2008-03-20
		 * TODO: review the code at whole - this is highly suspect (but will go away
		 * once we do the rest of RainerScript).
		 */
		/* was: strcpy((char*)cline, (char*)p); */
		for( i = 0 ; p[i] != '\0' ; ++i) {
			cline[i] = p[i];
		}
		cline[i] = '\0';

		for (p = (uchar*) strchr((char*)cline, '\0'); isspace((int) *--p);)
			/*EMPTY*/;
		if (*p == '\\') {
			if ((p - cbuf) > CFGLNSIZ - 30) {
				/* Oops the buffer is full - what now? */
				cline = cbuf;
			} else {
				*p = 0;
				cline = p;
				continue;
			}
		}  else
			cline = cbuf;
		*++p = '\0'; /* TODO: check this */

		/* we now have the complete line, and are positioned at the first non-whitespace
		 * character. So let's process it
		 */
		if(cfline(cbuf, &fCurr) != RS_RET_OK) {
			/* we log a message, but otherwise ignore the error. After all, the next
			 * line can be correct.  -- rgerhards, 2007-08-02
			 */
			uchar szErrLoc[MAXFNAME + 64];
			dbgprintf("config line NOT successfully processed\n");
			snprintf((char*)szErrLoc, sizeof(szErrLoc) / sizeof(uchar),
				 "%s, line %d", pConfFile, iLnNbr);
			errmsg.LogError(0, NO_ERRCODE, "the last error occured in %s", (char*)szErrLoc);
			bHadAnError = 1;
		}
	}

	/* we probably have one selector left to be added - so let's do that now */
	CHKiRet(selectorAddList(fCurr));

	/* close the configuration file */
	(void) fclose(cf);

finalize_it:
	if(iRet != RS_RET_OK) {
		char errStr[1024];
		if(fCurr != NULL)
			selectorDestruct(fCurr);

		rs_strerror_r(errno, errStr, sizeof(errStr));


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