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move to proper date in file if open old log

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This commit is contained in:
Jeff Hill
1999-08-31 15:51:00 +00:00
parent 02c6dc08e0
commit e9ebeb5202
1 changed files with 131 additions and 18 deletions
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149
src/util/iocLogServer.c
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@@ -47,6 +47,9 @@
* .09 050494 pg HPUX port changes.
* .10 021694 joh ANSI C
* $Log$
* Revision 1.31 1999/08/11 00:24:11 jhill
* dont increment file pos on error
*
* Revision 1.30 1998/06/16 02:43:16 jhill
* use ip addr conversion in libCom - and cosmetic changes
*
@@ -306,6 +309,132 @@ int main()
}
}
/*
* seekLatestLine (struct ioc_log_server *pserver)
*/
static int seekLatestLine (struct ioc_log_server *pserver)
{
static const time_t invalidTime = (time_t) -1;
time_t theLatestTime = invalidTime;
long latestFilePos = -1;
int status;
/*
* start at the beginning
*/
rewind (pserver->poutfile);
while (1) {
struct tm theDate;
int convertStatus;
char month[16];
/*
* find the line in the file with the latest date
*
* this assumes ctime() produces dates of the form:
* DayName MonthName dayNum 24hourHourNum:minNum:secNum yearNum
*/
convertStatus = fscanf (
pserver->poutfile, "%*s %*s %s %d %d:%d:%d %d %*[^\n] \n",
month, &theDate.tm_mday, &theDate.tm_hour,
&theDate.tm_min, &theDate.tm_sec, &theDate.tm_year);
if (convertStatus==6) {
static const char *pMonths[] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
static const unsigned nMonths = sizeof(pMonths)/sizeof(pMonths[0]);
time_t lineTime = (time_t) -1;
unsigned iMonth;
for (iMonth=0; iMonth<nMonths; iMonth++) {
if ( strcmp (pMonths[iMonth], month)==0 ) {
theDate.tm_mon = iMonth;
break;
}
}
if (iMonth<nMonths) {
static const int tm_epoch_year = 1900;
if (theDate.tm_year>tm_epoch_year) {
theDate.tm_year -= tm_epoch_year;
theDate.tm_isdst = -1; /* dont know */
lineTime = mktime (&theDate);
if ( lineTime != invalidTime ) {
if (theLatestTime == invalidTime ||
difftime(lineTime, theLatestTime)>=0) {
latestFilePos = ftell (pserver->poutfile);
theLatestTime = lineTime;
}
}
else {
char date[128];
size_t nChar;
nChar = strftime (date, sizeof(date), "%a %b %d %H:%M:%S %Y\n", &theDate);
if (nChar>0) {
fprintf (stderr, "iocLogServer: strange date in log file: %s\n", date);
}
else {
fprintf (stderr, "iocLogServer: strange date in log file\n");
}
}
}
else {
fprintf (stderr, "iocLogServer: strange year in log file: %d\n", theDate.tm_year);
}
}
else {
fprintf (stderr, "iocLogServer: strange month in log file: %s\n", month);
}
}
else {
char c = fgetc (pserver->poutfile);
/*
* bypass the line if it does not match the expected format
*/
while ( c!=EOF && c!='\n' ) {
c = fgetc (pserver->poutfile);
}
if (c==EOF) {
break;
}
}
}
/*
* move to the proper location in the file
*/
if (latestFilePos != -1) {
status = fseek (pserver->poutfile, latestFilePos, SEEK_SET);
if (status!=IOCLS_OK) {
fclose (pserver->poutfile);
pserver->poutfile = stderr;
return IOCLS_ERROR;
}
}
else {
status = fseek (pserver->poutfile, 0L, SEEK_END);
if (status!=IOCLS_OK) {
fclose (pserver->poutfile);
pserver->poutfile = stderr;
return IOCLS_ERROR;
}
}
pserver->filePos = ftell (pserver->poutfile);
if (theLatestTime==invalidTime) {
if (pserver->filePos!=0) {
fprintf (stderr, "iocLogServer: **** Warning ****\n");
fprintf (stderr, "iocLogServer: no recognizable dates in \"%s\"\n",
ioc_log_file_name);
fprintf (stderr, "iocLogServer: logging at end of file\n");
}
}
return IOCLS_OK;
}
/*
* openLogFile()
@@ -313,7 +442,6 @@ int main()
*/
static int openLogFile (struct ioc_log_server *pserver)
{
int status;
enum TF_RETURN ret;
if (ioc_log_file_limit==0u) {
@@ -347,24 +475,9 @@ static int openLogFile (struct ioc_log_server *pserver)
strcpy (pserver->outfile, ioc_log_file_name);
pserver->max_file_size = ioc_log_file_limit;
/*
* This is not required under UNIX but does appear
* to be required under WIN32.
*/
status = fseek (pserver->poutfile, 0L, SEEK_END);
if (status!=IOCLS_OK) {
fclose (pserver->poutfile);
pserver->poutfile = stderr;
return IOCLS_ERROR;
}
pserver->filePos = ftell (pserver->poutfile);
return IOCLS_OK;
return seekLatestLine (pserver);
}
/*
* handleLogFileError()
@@ -449,7 +562,7 @@ static void acceptNewClient(void *pParam)
* this task will find out and exit
*/
{
long true = true;
long true = 1;
status = setsockopt(
pclient->insock,