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-rw-r--r--runtime/datetime.c268
1 files changed, 158 insertions, 110 deletions
diff --git a/runtime/datetime.c b/runtime/datetime.c
index 6d5652ff..47cde8c2 100644
--- a/runtime/datetime.c
+++ b/runtime/datetime.c
@@ -159,18 +159,34 @@ static int srSLMGParseInt32(char** ppsz)
/**
* Parse a TIMESTAMP-3339.
- * updates the parse pointer position.
+ * updates the parse pointer position. The pTime parameter
+ * is guranteed to be updated only if a new valid timestamp
+ * could be obtained (restriction added 2008-09-16 by rgerhards).
*/
-static int
+static rsRetVal
ParseTIMESTAMP3339(struct syslogTime *pTime, char** ppszTS)
{
char *pszTS = *ppszTS;
+ /* variables to temporarily hold time information while we parse */
+ int year;
+ int month;
+ int day;
+ int hour; /* 24 hour clock */
+ int minute;
+ int second;
+ int secfrac; /* fractional seconds (must be 32 bit!) */
+ int secfracPrecision;
+ char OffsetMode; /* UTC offset + or - */
+ char OffsetHour; /* UTC offset in hours */
+ int OffsetMinute; /* UTC offset in minutes */
+ /* end variables to temporarily hold time information while we parse */
+ DEFiRet;
assert(pTime != NULL);
assert(ppszTS != NULL);
assert(pszTS != NULL);
- pTime->year = srSLMGParseInt32(&pszTS);
+ year = srSLMGParseInt32(&pszTS);
/* We take the liberty to accept slightly malformed timestamps e.g. in
* the format of 2003-9-1T1:0:0. This doesn't hurt on receiving. Of course,
@@ -178,105 +194,128 @@ ParseTIMESTAMP3339(struct syslogTime *pTime, char** ppszTS)
* here because at postion 11, there is no "T" in such cases ;)
*/
if(*pszTS++ != '-')
- return FALSE;
- pTime->month = srSLMGParseInt32(&pszTS);
- if(pTime->month < 1 || pTime->month > 12)
- return FALSE;
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
+ month = srSLMGParseInt32(&pszTS);
+ if(month < 1 || month > 12)
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
if(*pszTS++ != '-')
- return FALSE;
- pTime->day = srSLMGParseInt32(&pszTS);
- if(pTime->day < 1 || pTime->day > 31)
- return FALSE;
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
+ day = srSLMGParseInt32(&pszTS);
+ if(day < 1 || day > 31)
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
if(*pszTS++ != 'T')
- return FALSE;
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
- pTime->hour = srSLMGParseInt32(&pszTS);
- if(pTime->hour < 0 || pTime->hour > 23)
- return FALSE;
+ hour = srSLMGParseInt32(&pszTS);
+ if(hour < 0 || hour > 23)
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
if(*pszTS++ != ':')
- return FALSE;
- pTime->minute = srSLMGParseInt32(&pszTS);
- if(pTime->minute < 0 || pTime->minute > 59)
- return FALSE;
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
+ minute = srSLMGParseInt32(&pszTS);
+ if(minute < 0 || minute > 59)
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
if(*pszTS++ != ':')
- return FALSE;
- pTime->second = srSLMGParseInt32(&pszTS);
- if(pTime->second < 0 || pTime->second > 60)
- return FALSE;
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
+ second = srSLMGParseInt32(&pszTS);
+ if(second < 0 || second > 60)
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
/* Now let's see if we have secfrac */
- if(*pszTS == '.')
- {
+ if(*pszTS == '.') {
char *pszStart = ++pszTS;
- pTime->secfrac = srSLMGParseInt32(&pszTS);
- pTime->secfracPrecision = (int) (pszTS - pszStart);
- }
- else
- {
- pTime->secfracPrecision = 0;
- pTime->secfrac = 0;
+ secfrac = srSLMGParseInt32(&pszTS);
+ secfracPrecision = (int) (pszTS - pszStart);
+ } else {
+ secfracPrecision = 0;
+ secfrac = 0;
}
/* check the timezone */
if(*pszTS == 'Z')
{
pszTS++; /* eat Z */
- pTime->OffsetMode = 'Z';
- pTime->OffsetHour = 0;
- pTime->OffsetMinute = 0;
- }
- else if((*pszTS == '+') || (*pszTS == '-'))
- {
- pTime->OffsetMode = *pszTS;
+ OffsetMode = 'Z';
+ OffsetHour = 0;
+ OffsetMinute = 0;
+ } else if((*pszTS == '+') || (*pszTS == '-')) {
+ OffsetMode = *pszTS;
pszTS++;
- pTime->OffsetHour = srSLMGParseInt32(&pszTS);
- if(pTime->OffsetHour < 0 || pTime->OffsetHour > 23)
- return FALSE;
+ OffsetHour = srSLMGParseInt32(&pszTS);
+ if(OffsetHour < 0 || OffsetHour > 23)
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
if(*pszTS++ != ':')
- return FALSE;
- pTime->OffsetMinute = srSLMGParseInt32(&pszTS);
- if(pTime->OffsetMinute < 0 || pTime->OffsetMinute > 59)
- return FALSE;
- }
- else
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
+ OffsetMinute = srSLMGParseInt32(&pszTS);
+ if(OffsetMinute < 0 || OffsetMinute > 59)
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
+ } else {
/* there MUST be TZ information */
- return FALSE;
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
+ }
/* OK, we actually have a 3339 timestamp, so let's indicated this */
if(*pszTS == ' ')
++pszTS;
else
- return FALSE;
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
- /* update parse pointer */
+ /* we had success, so update parse pointer and caller-provided timestamp */
*ppszTS = pszTS;
+ pTime->timeType = 2;
+ pTime->year = year;
+ pTime->month = month;
+ pTime->day = day;
+ pTime->hour = hour;
+ pTime->minute = minute;
+ pTime->second = second;
+ pTime->secfrac = secfrac;
+ pTime->secfracPrecision = secfracPrecision;
+ pTime->OffsetMode = OffsetMode;
+ pTime->OffsetHour = OffsetHour;
+ pTime->OffsetMinute = OffsetMinute;
- return TRUE;
+finalize_it:
+ RETiRet;
}
/**
- * Parse a TIMESTAMP-3164.
- * Returns TRUE on parse OK, FALSE on parse error.
+ * Parse a TIMESTAMP-3164. The pTime parameter
+ * is guranteed to be updated only if a new valid timestamp
+ * could be obtained (restriction added 2008-09-16 by rgerhards). This
+ * also means the caller *must* provide a valid (probably current)
+ * timstamp in pTime when calling this function. a 3164 timestamp contains
+ * only partial information and only that partial information is updated.
+ * So the "output timestamp" is a valid timestamp only if the "input
+ * timestamp" was valid, too. The is actually an optimization, as it
+ * permits us to use a pre-aquired timestamp and thus avoids to do
+ * a (costly) time() call. Thanks to David Lang for insisting on
+ * time() call reduction ;).
*/
-static int
+static rsRetVal
ParseTIMESTAMP3164(struct syslogTime *pTime, char** ppszTS)
{
+ /* variables to temporarily hold time information while we parse */
+ int month;
+ int day;
+ int hour; /* 24 hour clock */
+ int minute;
+ int second;
+ /* end variables to temporarily hold time information while we parse */
char *pszTS;
+ DEFiRet;
assert(ppszTS != NULL);
pszTS = *ppszTS;
assert(pszTS != NULL);
assert(pTime != NULL);
- getCurrTime(pTime); /* obtain the current year and UTC offsets! */
-
/* If we look at the month (Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec),
* we may see the following character sequences occur:
*
@@ -301,117 +340,117 @@ ParseTIMESTAMP3164(struct syslogTime *pTime, char** ppszTS)
++pszTS;
if(*pszTS == 'n') {
++pszTS;
- pTime->month = 1;
+ month = 1;
} else
- return FALSE;
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
} else if(*pszTS == 'u') {
++pszTS;
if(*pszTS == 'n') {
++pszTS;
- pTime->month = 6;
+ month = 6;
} else if(*pszTS == 'l') {
++pszTS;
- pTime->month = 7;
+ month = 7;
} else
- return FALSE;
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
} else
- return FALSE;
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
break;
case 'F':
if(*pszTS == 'e') {
++pszTS;
if(*pszTS == 'b') {
++pszTS;
- pTime->month = 2;
+ month = 2;
} else
- return FALSE;
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
} else
- return FALSE;
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
break;
case 'M':
if(*pszTS == 'a') {
++pszTS;
if(*pszTS == 'r') {
++pszTS;
- pTime->month = 3;
+ month = 3;
} else if(*pszTS == 'y') {
++pszTS;
- pTime->month = 5;
+ month = 5;
} else
- return FALSE;
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
} else
- return FALSE;
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
break;
case 'A':
if(*pszTS == 'p') {
++pszTS;
if(*pszTS == 'r') {
++pszTS;
- pTime->month = 4;
+ month = 4;
} else
- return FALSE;
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
} else if(*pszTS == 'u') {
++pszTS;
if(*pszTS == 'g') {
++pszTS;
- pTime->month = 8;
+ month = 8;
} else
- return FALSE;
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
} else
- return FALSE;
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
break;
case 'S':
if(*pszTS == 'e') {
++pszTS;
if(*pszTS == 'p') {
++pszTS;
- pTime->month = 9;
+ month = 9;
} else
- return FALSE;
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
} else
- return FALSE;
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
break;
case 'O':
if(*pszTS == 'c') {
++pszTS;
if(*pszTS == 't') {
++pszTS;
- pTime->month = 10;
+ month = 10;
} else
- return FALSE;
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
} else
- return FALSE;
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
break;
case 'N':
if(*pszTS == 'o') {
++pszTS;
if(*pszTS == 'v') {
++pszTS;
- pTime->month = 11;
+ month = 11;
} else
- return FALSE;
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
} else
- return FALSE;
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
break;
case 'D':
if(*pszTS == 'e') {
++pszTS;
if(*pszTS == 'c') {
++pszTS;
- pTime->month = 12;
+ month = 12;
} else
- return FALSE;
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
} else
- return FALSE;
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
break;
default:
- return FALSE;
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
}
/* done month */
if(*pszTS++ != ' ')
- return FALSE;
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
/* we accept a slightly malformed timestamp when receiving. This is
* we accept one-digit days
@@ -419,42 +458,51 @@ ParseTIMESTAMP3164(struct syslogTime *pTime, char** ppszTS)
if(*pszTS == ' ')
++pszTS;
- pTime->day = srSLMGParseInt32(&pszTS);
- if(pTime->day < 1 || pTime->day > 31)
- return FALSE;
+ day = srSLMGParseInt32(&pszTS);
+ if(day < 1 || day > 31)
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
if(*pszTS++ != ' ')
- return FALSE;
- pTime->hour = srSLMGParseInt32(&pszTS);
- if(pTime->hour < 0 || pTime->hour > 23)
- return FALSE;
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
+ hour = srSLMGParseInt32(&pszTS);
+ if(hour < 0 || hour > 23)
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
if(*pszTS++ != ':')
- return FALSE;
- pTime->minute = srSLMGParseInt32(&pszTS);
- if(pTime->minute < 0 || pTime->minute > 59)
- return FALSE;
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
+ minute = srSLMGParseInt32(&pszTS);
+ if(minute < 0 || minute > 59)
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
if(*pszTS++ != ':')
- return FALSE;
- pTime->second = srSLMGParseInt32(&pszTS);
- if(pTime->second < 0 || pTime->second > 60)
- return FALSE;
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
+ second = srSLMGParseInt32(&pszTS);
+ if(second < 0 || second > 60)
+ ABORT_FINALIZE(RS_RET_INVLD_TIME);
- /* we provide support for an exter ":" after the date. While this is an
+ /* we provide support for an extra ":" after the date. While this is an
* invalid format, it occurs frequently enough (e.g. with Cisco devices)
* to permit it as a valid case. -- rgerhards, 2008-09-12
*/
if(*pszTS++ == ':')
- ++pszTS;
+ ++pszTS; /* just skip past it */
- /* OK, we actually have a 3164 timestamp, so let's indicate this
- * and fill the rest of the properties. */
+ /* we had success, so update parse pointer and caller-provided timestamp
+ * fields we do not have are not updated in the caller's timestamp. This
+ * is the reason why the caller must pass in a correct timestamp.
+ */
+ *ppszTS = pszTS; /* provide updated parse position back to caller */
pTime->timeType = 1;
+ pTime->month = month;
+ pTime->day = day;
+ pTime->hour = hour;
+ pTime->minute = minute;
+ pTime->second = second;
pTime->secfracPrecision = 0;
pTime->secfrac = 0;
- *ppszTS = pszTS; /* provide updated parse position back to caller */
- return TRUE;
+
+finalize_it:
+ RETiRet;
}
/*******************************************************************
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