/* the Music Player Daemon (MPD) * (c)2003-2004 by Warren Dukes (shank@mercury.chem.pitt.edu) * 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 <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 int myfprintf_stdLogMode = 0; FILE * myfprintf_out; FILE * myfprintf_err; char * myfprintf_outFilename; char * myfprintf_errFilename; 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, char * outFilename, char * errFilename) { myfprintf_stdLogMode = 1; myfprintf_out = out; myfprintf_err = err; myfprintf_outFilename = prependCwdToPathDup(outFilename); myfprintf_errFilename = prependCwdToPathDup(errFilename); } void myfprintf(FILE * fp, char * format, ... ) { char buffer[BUFFER_LENGTH+1]; va_list arglist; int fd = fileno(fp); memset(buffer,0,BUFFER_LENGTH+1); 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; }