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/************************************************************************
* Error handling routines.
*
* The functions in this file are independent of any application
* variables, and may be used with any C program.
* Either of the names CLIENT or SERVER may be defined when compiling
* this function. If neither are defined, we assume CLIENT.
*/
//#include <varargs.h>
#include <string.h>
#include <stdarg.h>
#include <errno.h>
#include <iostream>
using namespace std;
#ifdef CLIENT
#ifdef SERVER
cant define both CLIENT and SERVER
#endif
#endif
#ifndef CLIENT
#ifndef SERVER
#define CLIENT 1 /* default to client */
#endif
#endif
#ifndef NULL
#define NULL ((void *) 0)
#endif
char *pname = NULL;
#ifdef CLIENT /* these all output to stderr */
/* ------------------- BEGIN CLIENT ------------------- */
/*
* Print the UNIX errno value.
*/
void my_perror()
{
//char *sys_err_str();
char *str = strerror(errno);
cerr << str << endl;
//fprintf(stderr, " %s\n", sys_err_str());
}
/*
* Print the UNIX errno value.
* We just append it to the end of the emesgstr[] array.
*/
/*
* Fatal error. Print a message and terminate.
* Don't dump core and don't print the system's errno value.
*
* err_quit(str, arg1, arg2, ...)
*
* The string "str" must specify the conversion specification for any args.
*/
/*VARARGS1*/
void err_quit(char *fmt, ...)
{
va_list args;
va_start(args, fmt);
if (pname != NULL)
cerr << pname;
fmt = va_arg(args, char *);
vfprintf(stderr, fmt, args);
fputc('\n', stderr);
va_end(args);
exit(1);
}
/*
* Fatal error related to a system call. Print a message and terminate.
* Don't dump core, but do print the system's errno value and its
* associated message.
*
* err_sys(str, arg1, arg2, ...)
*
* The string "str" must specify the conversion specification for any args.
*/
/*VARARGS1*/
void err_sys(char *fmt, ...)
{
va_list args;
va_start(args, fmt);
if (pname != NULL) {
cerr << "if (pname != NULL) {" << endl;
fprintf(stderr, "%s: ", pname);
}
fmt = va_arg(args, char *);
vfprintf(stderr, fmt, args);
va_end(args);
my_perror();
exit(1);
}
/*
* Recoverable error. Print a message, and return to caller.
*
* err_ret(str, arg1, arg2, ...)
*
* The string "str" must specify the conversion specification for any args.
*/
/*VARARGS1*/
void err_ret(char *fmt, ...)
{
va_list args;
va_start(args, fmt);
if (pname != NULL)
fprintf(stderr, "%s: ", pname);
fmt = va_arg(args, char *);
vfprintf(stderr, fmt, args);
va_end(args);
my_perror();
fflush(stdout);
fflush(stderr);
return;
}
/*
* Fatal error. Print a message, dump core (for debugging) and terminate.
*
* err_dump(str, arg1, arg2, ...)
*
* The string "str" must specify the conversion specification for any args.
*/
/*VARARGS1*/
void err_dump(char *fmt, ...)
{
va_list args;
va_start(args, fmt);
if (pname != NULL)
fprintf(stderr, "%s: ", pname);
fmt = va_arg(args, char *);
vfprintf(stderr, fmt, args);
va_end(args);
my_perror();
fflush(stdout); /* abort doesn't flush stdio buffers */
fflush(stderr);
abort(); /* dump core and terminate */
exit(1); /* shouldn't get here */
}
#endif /* ------------------- END CLIENT ------------------- */
/* ------------------- BEGIN SERVER ------------------- */
#ifdef SERVER
#ifdef BSD
/*
* Under BSD, these server routines use the syslog(3) facility.
* They don't append a newline, for example.
*/
#include <syslog.h>
#else /* not BSD */
/*
* There really ought to be a better way to handle server logging
* under System V.
*/
#define syslog(a,b) cerr << "syslog: "<< (b)
#define openlog(a,b,c) cerr << (a)
#endif /* BSD */
/*
* Print the UNIX errno value.
* We just append it to the end of the emesgstr[] array.
*/
char emesgstr[255] = {"test"}; /* used by all server routines */
void my_perror()
{
// register int len;
//char *sys_err_str();
// len = strlen(emesgstr);
cerr << emesgstr
<< strerror(errno)
<< endl;
//sprintf(emesgstr + len, " %s", sys_err_str());
}
/*
* Identify ourself, for syslog() messages.
*
* LOG_PID is an option that says prepend each message with our pid.
* LOG_CONS is an option that says write to console if unable to send
* the message to syslogd.
* LOG_DAEMON is our facility.
*/
void err_init(char *ident)
{
openlog(ident, (LOG_PID | LOG_CONS), LOG_DAEMON);
}
/*
* Fatal error. Print a message and terminate.
* Don't print the system's errno value.
*
* err_quit(str, arg1, arg2, ...)
*
* The string "str" must specify the conversion specification for any args.
*/
/*VARARGS1*/
void err_quit(char *fmt, ...)
{
va_list args;
va_start(args, fmt);
fmt = va_arg(args, char *);
vsprintf(emesgstr, fmt, args);
va_end(args);
syslog(LOG_ERR, emesgstr);
exit(1);
}
/*
* Fatal error related to a system call. Print a message and terminate.
* Don't dump core, but do print the system's errno value and its
* associated message.
*
* err_sys(str, arg1, arg2, ...)
*
* The string "str" must specify the conversion specification for any args.
*/
/*VARARGS1*/
void err_sys(char *fmt, ...)
{
cerr << "err_sys: " << fmt << endl;
va_list args;
va_start(args, fmt);
fmt = va_arg(args, char *);
vsprintf(emesgstr, fmt, args);
va_end(args);
my_perror();
syslog(LOG_ERR, emesgstr);
exit(1);
}
/*
* Recoverable error. Print a message, and return to caller.
*
* err_ret(str, arg1, arg2, ...)
*
* The string "str" must specify the conversion specification for any args.
*/
/*VARARGS1*/
void err_ret(char *fmt, ...)
{
va_list args;
va_start(args, fmt);
fmt = va_arg(args, char *);
vsprintf(emesgstr, fmt, args);
va_end(args);
my_perror();
syslog(LOG_ERR, emesgstr);
return;
}
/*
* Fatal error. Print a message, dump core (for debugging) and terminate.
*
* err_dump(str, arg1, arg2, ...)
*
* The string "str" must specify the conversion specification for any args.
*/
/*VARARGS1*/
void err_dump(char *fmt, ...)
{
va_list args;
va_start(args,fmt);
fmt = va_arg(args, char *);
vsprintf(emesgstr, fmt, args);
va_end(args);
my_perror();
syslog(LOG_ERR, emesgstr);
abort(); /* dump core and terminate */
exit(1); /* shouldn't get here */
}
#endif /* ------------------- SERVER ------------------- */
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