コード例 #1
0
ファイル: parse.c プロジェクト: fastly/rsyslog
/* Parse a quoted string ("-some-data") from the given position.
 * Leading whitespace before the first quote is skipped. During
 * parsing, escape sequences are detected and converted:
 * \\ - backslash character
 * \" - quote character
 * any other value \<somechar> is reserved for future use.
 *
 * After return, the parse pointer is paced after the trailing
 * quote.
 *
 * Output:
 * ppCStr Pointer to the parsed string - must be freed by caller and
 *        does NOT include the quotes.
 * rgerhards, 2005-09-19
 */
rsRetVal parsQuotedCStr(rsParsObj *pThis, cstr_t **ppCStr)
{
	register unsigned char *pC;
	cstr_t *pCStr = NULL;
	DEFiRet;

	rsCHECKVALIDOBJECT(pThis, OIDrsPars);

	CHKiRet(parsSkipAfterChar(pThis, '"'));
	pC = rsCStrGetBufBeg(pThis->pCStr) + pThis->iCurrPos;

	/* OK, we most probably can obtain a value... */
	CHKiRet(cstrConstruct(&pCStr));

	while(pThis->iCurrPos < cstrLen(pThis->pCStr)) {
		if(*pC == '"') {
			break;	/* we are done! */
		} else if(*pC == '\\') {
			++pThis->iCurrPos;
			++pC;
			if(pThis->iCurrPos < cstrLen(pThis->pCStr)) {
				/* in this case, we copy the escaped character
				 * to the output buffer (but do not rely on this,
				 * we might later introduce other things, like \007!
				 */
				CHKiRet(cstrAppendChar(pCStr, *pC));
			}
		} else { /* regular character */
			CHKiRet(cstrAppendChar(pCStr, *pC));
		}
		++pThis->iCurrPos;
		++pC;
	}
	
	if(*pC == '"') {
		++pThis->iCurrPos; /* 'eat' trailing quote */
	} else {
		/* error - improperly quoted string! */
		cstrDestruct(&pCStr);
		ABORT_FINALIZE(RS_RET_MISSING_TRAIL_QUOTE);
	}

	/* We got the string, let's finish it...  */
	CHKiRet(cstrFinalize(pCStr));

	/* done! */
	*ppCStr = pCStr;

finalize_it:
	if(iRet != RS_RET_OK) {
		if(pCStr != NULL)
			cstrDestruct(&pCStr);
	}

	RETiRet;
}
コード例 #2
0
ファイル: impstats.c プロジェクト: ahtotruu/rsyslog
/* log stats message to file; limited error handling done */
static inline void
doLogToFile(cstr_t *cstr)
{
	struct iovec iov[4];
	ssize_t nwritten;
	ssize_t nexpect;
	time_t t;
	char timebuf[32];

	if(cstrLen(cstr) == 0)
		goto done;
	if(runModConf->logfd == -1) {
		runModConf->logfd = open(runModConf->logfile, O_WRONLY|O_CREAT|O_APPEND|O_CLOEXEC, S_IRUSR|S_IWUSR);
		if(runModConf->logfd == -1) {
			dbgprintf("error opening stats file %s\n", runModConf->logfile);
			goto done;
		}
	}

	time(&t);
	iov[0].iov_base = ctime_r(&t, timebuf);
	iov[0].iov_len = nexpect = strlen(iov[0].iov_base) - 1; /* -1: strip \n */
	iov[1].iov_base = ": ";
	iov[1].iov_len = 2;
	nexpect += 2;
	iov[2].iov_base = rsCStrGetSzStrNoNULL(cstr);
	iov[2].iov_len = (size_t) cstrLen(cstr);
	nexpect += cstrLen(cstr);
	iov[3].iov_base = "\n";
	iov[3].iov_len = 1;
	nexpect++;
	nwritten = writev(runModConf->logfd, iov, 4);

	if(nwritten != nexpect) {
			dbgprintf("error writing stats file %s, nwritten %lld, expected %lld\n",
				  runModConf->logfile, (long long) nwritten, (long long) nexpect);
	}
done:	return;
}
コード例 #3
0
ファイル: parse.c プロジェクト: Werkov/rsyslog
/* Parse string up to a delimiter.
 *
 * Input:
 * cDelim - the delimiter. Note that SP within a value always is a delimiter,
 * so cDelim is actually an *additional* delimiter.
 *   The following two are for whitespace stripping,
 *   0 means "no", 1 "yes"
 *   - bTrimLeading
 *   - bTrimTrailing
 *   - bConvLower - convert string to lower case?
 * 
 * Output:
 * ppCStr Pointer to the parsed string - must be freed by caller!
 */
rsRetVal parsDelimCStr(rsParsObj *pThis, cstr_t **ppCStr, char cDelim, int bTrimLeading, int bTrimTrailing, int bConvLower)
{
	DEFiRet;
	register unsigned char *pC;
	cstr_t *pCStr = NULL;

	rsCHECKVALIDOBJECT(pThis, OIDrsPars);

	CHKiRet(rsCStrConstruct(&pCStr));

	if(bTrimLeading)
		parsSkipWhitespace(pThis);

	pC = rsCStrGetBufBeg(pThis->pCStr) + pThis->iCurrPos;

	while(pThis->iCurrPos < rsCStrLen(pThis->pCStr) && *pC != cDelim) {
		CHKiRet(cstrAppendChar(pCStr, bConvLower ? tolower(*pC) : *pC));
		++pThis->iCurrPos;
		++pC;
	}
	
	if(pThis->iCurrPos < cstrLen(pThis->pCStr)) { //BUGFIX!!
		++pThis->iCurrPos; /* eat delimiter */
	}

	/* We got the string, now take it and see if we need to
	 * remove anything at its end.
	 */
	CHKiRet(cstrFinalize(pCStr));

	if(bTrimTrailing) {
		CHKiRet(cstrTrimTrailingWhiteSpace(pCStr));
	}

	/* done! */
	*ppCStr = pCStr;

finalize_it:
	if(iRet != RS_RET_OK) {
		if(pCStr != NULL)
			rsCStrDestruct(&pCStr);
	}

	RETiRet;
}