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/*
* Copyright (c) 1983 Eric P. Allman
* Copyright (c) 1988 Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted provided
* that: (1) source distributions retain this entire copyright notice and
* comment, and (2) distributions including binaries display the following
* acknowledgement: ``This product includes software developed by the
* University of California, Berkeley and its contributors'' in the
* documentation or other materials provided with the distribution and in
* all advertising materials mentioning features or use of this software.
* Neither the name of the University nor the names of its contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#ifndef lint
static char Version[] = "@(#)stat.c e07@nikhef.nl (Eric Wassenaar) 970926";
#endif
#include "vrfy.h"
extern int SmtpErrno; /* saved errno from system calls */
extern char *SmtpPhase; /* connection state message */
extern char *CurHostName; /* remote host that is being contacted */
extern char SmtpErrorBuffer[]; /* smtp temporary failure message */
/*
* Status messages.
*/
static char *SysExMsg[] =
{
/* 64 EX_USAGE */ "500 Bad usage",
/* 65 EX_DATAERR */ "501 Data format error",
/* 66 EX_NOINPUT */ "550 Cannot open input",
/* 67 EX_NOUSER */ "550 User unknown",
/* 68 EX_NOHOST */ "550 Host unknown",
/* 69 EX_UNAVAILABLE */ "554 Service unavailable",
/* 70 EX_SOFTWARE */ "554 Internal error",
/* 71 EX_OSERR */ "451 Operating system error",
/* 72 EX_OSFILE */ "554 System file missing",
/* 73 EX_CANTCREAT */ "550 Can't create output",
/* 74 EX_IOERR */ "451 I/O error",
/* 75 EX_TEMPFAIL */ "250 Deferred",
/* 76 EX_PROTOCOL */ "554 Remote protocol error",
/* 77 EX_NOPERM */ "550 Insufficient permission",
/* 78 EX_CONFIG */ "554 Local configuration error",
#ifdef notdef
/* 79 EX_AMBUSER */ "550 User ambiguous"
#endif
};
static int N_SysEx = sizeof(SysExMsg) / sizeof(SysExMsg[0]);
#define EX__BASE EX_USAGE
/*
** STATSTRING -- Fetch message describing result status
** ----------------------------------------------------
**
** Returns:
** Pointer to appropriate status message.
*/
char *
statstring(stat)
int stat; /* result status */
{
static char buf[BUFSIZ];
if (stat == EX_SUCCESS)
{
(void) sprintf(buf, "250 Ok");
return(buf);
}
stat -= EX__BASE;
if (stat < 0 || stat >= N_SysEx)
{
(void) sprintf(buf, "554 Unknown status %d", stat + EX__BASE);
return(buf);
}
return(SysExMsg[stat]);
}
/*
** ERRSTRING -- Fetch message describing system call errors
** --------------------------------------------------------
**
** Returns:
** Pointer to appropriate error message.
*/
char *
errstring(err)
int err; /* errno from system calls */
{
static char buf[BUFSIZ];
switch (err)
{
case ETIMEDOUT:
case ECONNRESET:
case EIO:
if (err == ECONNRESET)
(void) strcpy(buf, "Connection reset");
else
(void) strcpy(buf, strerror(err));
if (SmtpPhase != NULL)
{
(void) strcat(buf, " during ");
(void) strcat(buf, SmtpPhase);
}
if (CurHostName != NULL)
{
(void) strcat(buf, " with ");
(void) strcat(buf, CurHostName);
}
return(buf);
case EHOSTUNREACH:
case EHOSTDOWN:
case ENETUNREACH:
case ENETDOWN:
if (CurHostName == NULL)
break;
(void) sprintf(buf, "Host %s is unreachable", CurHostName);
return(buf);
case ECONNREFUSED:
if (CurHostName == NULL)
break;
(void) sprintf(buf, "Connection refused by %s", CurHostName);
return(buf);
}
return strerror(err);
}
/*
** GIVERESPONSE -- Issue status message about transaction result
** -------------------------------------------------------------
**
** Returns:
** None.
*/
void
giveresponse(stat)
int stat; /* result status */
{
char buf[BUFSIZ];
register char *p;
if (stat == EX_TEMPFAIL)
{
if (h_errno == TRY_AGAIN)
/* temporary nameserver failure */
p = "Hostname lookup failure";
else if (SmtpErrno != 0)
/* non-fatal system call failure */
p = errstring(SmtpErrno);
else
/* temporary smtp failure reply message received */
p = SmtpErrorBuffer;
/* add extra information for temporary failures */
if (p == NULL || p[0] == '\0')
p = "Transient failure";
(void) sprintf(buf, "%s: %s", statstring(stat), p);
}
else if (stat == EX_NOHOST && h_errno != 0)
{
/* add extra information from nameserver */
if (h_errno == HOST_NOT_FOUND)
p = "Not registered in DNS";
else if (h_errno == NO_ADDRESS)
p = "No address or MX record";
else
p = "Nameserver lookup failure";
(void) sprintf(buf, "%s (%s)", statstring(stat), p);
}
else
(void) sprintf(buf, "%s", statstring(stat));
/* issue status message */
message(buf);
}
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