extra.c
3.75 KB
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/* GNU mailutils - a suite of utilities for electronic mail
Copyright (C) 1999, 2001 Free Software Foundation, Inc.
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, 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "pop3d.h"
/* Takes a string as input and returns either the remainder of the string
after the first space, or a zero length string if no space */
char *
pop3d_args (const char *cmd)
{
int space = -1, i = 0, len;
char *buf;
len = strlen (cmd) + 1;
buf = malloc (len * sizeof (char));
if (buf == NULL)
pop3d_abquit (ERR_NO_MEM);
while (space < 0 && i < len)
{
if (cmd[i] == ' ')
space = i + 1;
else if (cmd[i] == '\0' || cmd[i] == '\r' || cmd[i] == '\n')
len = i;
i++;
}
if (space < 0)
buf[0] = '\0';
else
{
for (i = space; i < len; i++)
if (cmd[i] == '\0' || cmd[i] == '\r' || cmd[i] == '\n')
buf[i - space] = '\0';
else
buf[i - space] = cmd[i];
}
return buf;
}
/* This takes a string and returns the string up to the first space or end of
the string, whichever occurs first */
char *
pop3d_cmd (const char *cmd)
{
char *buf;
int i = 0, len;
len = strlen (cmd) + 1;
buf = malloc (len * sizeof (char));
if (buf == NULL)
pop3d_abquit (ERR_NO_MEM);
for (i = 0; i < len; i++)
{
if (cmd[i] == ' ' || cmd[i] == '\0' || cmd[i] == '\r' || cmd[i] == '\n')
len = i;
else
buf[i] = cmd[i];
}
buf[i - 1] = '\0';
return buf;
}
/* This is called if GNU POP3 needs to quit without going to the UPDATE stage.
This is used for conditions such as out of memory, a broken socket, or
being killed on a signal */
int
pop3d_abquit (int reason)
{
/* Unlock spool */
pop3d_unlock();
mailbox_close (mbox);
mailbox_destroy (&mbox);
switch (reason)
{
case ERR_NO_MEM:
fprintf (ofile, "-ERR Out of memory, quitting\r\n");
syslog (LOG_ERR, "Out of memory");
break;
case ERR_SIGNAL:
fprintf (ofile, "-ERR Quitting on signal\r\n");
syslog (LOG_ERR, "Quitting on signal");
break;
case ERR_TIMEOUT:
fprintf (ofile, "-ERR Session timed out\r\n");
if (state == TRANSACTION)
syslog (LOG_INFO, "Session timed out for user: %s", username);
else
syslog (LOG_INFO, "Session timed out for no user");
break;
case ERR_NO_OFILE:
syslog (LOG_INFO, "No socket to send to");
break;
case ERR_MBOX_SYNC:
syslog (LOG_ERR, "Mailbox was updated by other party: %s", username);
fprintf (ofile, "-ERR [OUT-SYNC] Mailbox updated by other party or corrupt\r\n");
break;
default:
fprintf (ofile, "-ERR Quitting (reason unknown)\r\n");
syslog (LOG_ERR, "Unknown quit");
break;
}
closelog();
exit (EXIT_FAILURE);
}
/* Gets a line of input from the client, caller should free() */
char *
pop3d_readline (FILE *fp)
{
static char buffer[512];
char *ptr;
alarm (timeout);
ptr = fgets (buffer, sizeof (buffer), fp);
alarm (0);
/* We should probably check ferror() too, but if ptr is null we
are done anyway; if (!ptr && ferror(fp)) */
if (!ptr)
pop3d_abquit (ERR_NO_OFILE);
/* Caller should not free () this ... should we strdup() then? */
return ptr;
}