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/* the Music Player Daemon (MPD)
* (c)2003-2006 by Warren Dukes (warren.dukes@gmail.com)
* This project's homepage is: http://www.musicpd.org
*
* This program 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 2 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "myfprintf.h"
#include "interface.h"
#include "path.h"
#include "log.h"
#include "conf.h"
#include <stdarg.h>
#include <sys/param.h>
#include <unistd.h>
#include <sys/select.h>
#include <fcntl.h>
#include <string.h>
#include <errno.h>
#define BUFFER_LENGTH MAXPATHLEN+1024
static int myfprintf_stdLogMode = 0;
static FILE * myfprintf_out;
static FILE * myfprintf_err;
static char * myfprintf_outFilename;
static char * myfprintf_errFilename;
static void blockingWrite(int fd, char * string, int len) {
int ret;
while(len) {
ret = write(fd,string,len);
if(ret==0) return;
if(ret<0) {
switch(errno) {
case EAGAIN:
case EINTR:
continue;
default:
return;
}
}
len-= ret;
string+= ret;
}
}
void myfprintfStdLogMode(FILE * out, FILE * err) {
myfprintf_stdLogMode = 1;
myfprintf_out = out;
myfprintf_err = err;
myfprintf_outFilename = getConfigParamValue(CONF_LOG_FILE);
myfprintf_errFilename = getConfigParamValue(CONF_ERROR_FILE);
}
void myfprintf(FILE * fp, char * format, ... ) {
static char buffer[BUFFER_LENGTH+1];
va_list arglist;
int fd = fileno(fp);
va_start(arglist,format);
if(fd==1 || fd==2) {
if(myfprintf_stdLogMode) {
time_t t = time(NULL);
if(fd==1) fp = myfprintf_out;
else fp = myfprintf_err;
strftime(buffer,14,"%b %e %R",localtime(&t));
blockingWrite(fd,buffer,strlen(buffer));
blockingWrite(fd," : ",3);
}
vsnprintf(buffer,BUFFER_LENGTH,format,arglist);
blockingWrite(fd,buffer,strlen(buffer));
}
else {
int len;
vsnprintf(buffer,BUFFER_LENGTH,format,arglist);
len = strlen(buffer);
if(interfacePrintWithFD(fd,buffer,len)<0) {
blockingWrite(fd,buffer,len);
}
}
va_end(arglist);
}
int myfprintfCloseAndOpenLogFile() {
if(myfprintf_stdLogMode) {
while(fclose(myfprintf_out)<0 && errno==EINTR);
while(fclose(myfprintf_err)<0 && errno==EINTR);
while((myfprintf_out = fopen(myfprintf_outFilename,"a+"))==NULL
&& errno==EINTR);
if(!myfprintf_out) {
ERROR("error re-opening log file: %s\n",
myfprintf_out);
return -1;
}
while((myfprintf_err = fopen(myfprintf_errFilename,"a+"))==NULL
&& errno==EINTR);
if(!myfprintf_out) {
ERROR("error re-opening log file: %s\n",
myfprintf_out);
return -1;
}
while(dup2(fileno(myfprintf_out),1)<0 && errno==EINTR);
while(dup2(fileno(myfprintf_err),2)<0 && errno==EINTR);
}
return 0;
}
void myfprintfCloseLogFile() {
if(myfprintf_stdLogMode) {
while(fclose(myfprintf_out)<0 && errno==EINTR);
while(fclose(myfprintf_err)<0 && errno==EINTR);
}
}
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