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#include "config.h"
/*
** Copyright 1998 - 2006 Double Precision, Inc.
** See COPYING for distribution information.
*/
#include "maildrop.h"
#include "exittrap.h"
#include <signal.h>
#include <sysexits.h>
#include <errno.h>
#if SYSLOG_LOGGING
#include <syslog.h>
#endif
extern void killprocgroup();
int Maildrop::sigfpe;
static RETSIGTYPE sig_fpe(int)
{
maildrop.sigfpe=1;
signal (SIGFPE, sig_fpe);
#if RETSIGTYPE != void
return (0);
#endif
}
void Maildrop::cleanup()
{
ExitTrap::onexit();
killprocgroup();
}
RETSIGTYPE Maildrop::bye(int n)
{
static const char msg[]="maildrop: signal 0x";
static const char hex[]="0123456789ABCDEF";
cleanup();
if (write(2, msg, sizeof(msg)-1) < 0 ||
write(2, hex+ ((n / 16) & 0x0F), 1) < 0 ||
write(2, hex+ (n & 0x0F), 1) < 0 ||
write(2, "\n", 1) < 0)
; /* gcc shut up */
_exit(EX_TEMPFAIL);
#if RETSIGTYPE != void
return (0);
#endif
}
int Maildrop::trap(int (*func)(int, char *[]), int argc, char *argv[])
{
int n;
for (n=0; n<NSIG; n++)
signal(n, bye);
signal(SIGPIPE, SIG_IGN);
#ifdef SIGWINCH
signal(SIGWINCH, SIG_IGN);
#endif
signal(SIGCHLD, SIG_DFL);
signal(SIGFPE, sig_fpe);
#if SYSLOG_LOGGING
openlog("maildrop", LOG_PID, LOG_MAIL);
#endif
try
{
int r=(*func)(argc, argv);
cleanup();
return (r);
}
catch (const char *p)
{
merr << argv[0] << ": " << p << "\n";
#if SYSLOG_LOGGING
syslog(LOG_INFO, "%s", p);
#endif
cleanup();
return (EX_TEMPFAIL);
}
#if NEED_NONCONST_EXCEPTIONS
catch (char *p)
{
merr << argv[0] << ": " << p << "\n";
#if SYSLOG_LOGGING
syslog(LOG_INFO, "%s", p);
#endif
cleanup();
return (EX_TEMPFAIL);
}
#endif
catch (int n)
{
cleanup();
return (n);
}
catch (...)
{
merr << argv[0] << ": Internal error.\n";
#if SYSLOG_LOGGING
syslog(LOG_INFO, "Internal error.");
#endif
cleanup();
return (EX_TEMPFAIL);
}
}
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