pop3_readline.c
2.45 KB
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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 2003, 2007, 2010 Free Software Foundation, Inc.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 3 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General
Public License along with this library; if not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301 USA */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/time.h>
#include <unistd.h>
#include <errno.h>
#include <mailutils/sys/pop3.h>
#include <mailutils/error.h>
#include <mailutils/cctype.h>
#include <mailutils/cstr.h>
int
mu_pop3_carrier_is_ready (mu_stream_t carrier, int flag, int timeout)
{
struct timeval tv, *tvp = NULL;
int wflags = flag;
int status;
if (timeout >= 0)
{
tv.tv_sec = timeout / 100;
tv.tv_usec = (timeout % 1000) * 1000;
tvp = &tv;
}
status = mu_stream_wait (carrier, &wflags, tvp);
if (status)
return 0; /* FIXME: provide a way to return error code! */
return wflags & flag;
}
/* Read a complete line from the pop server. Transform CRLF to LF, remove
the stuff byte termination octet ".", put a null in the buffer
when done. And Do a select() (stream_is_readready()) for the timeout. */
/* FIXME: Is it needed? */
int
mu_pop3_getline (mu_pop3_t pop3)
{
size_t n;
int status = mu_stream_getline (pop3->carrier, &pop3->rdbuf,
&pop3->rdsize, &n);
if (status == 0)
{
if (n == 0)
return EIO;
n = mu_rtrim_class (pop3->rdbuf, MU_CTYPE_SPACE);
/* When examining a multi-line response, the client checks to see if the
line begins with the termination octet "."(DOT). If yes and if octets
other than CRLF follow, the first octet of the line (the termination
octet) is stripped away. */
if (n >= 2 &&
pop3->rdbuf[0] == '.' &&
pop3->rdbuf[1] != '\n')
memmove (pop3->rdbuf, pop3->rdbuf + 1, n);
}
return status;
}