pop3_response.c
2.06 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 <string.h>
#include <errno.h>
#include <mailutils/sys/pop3.h>
/* If we did not grap the ack already, call pop3_readline() but handle
Nonblocking also. */
int
mu_pop3_response (mu_pop3_t pop3, char *buffer, size_t buflen, size_t *pnread)
{
size_t n = 0;
int status = 0;
if (pop3 == NULL)
return EINVAL;
if (!pop3->acknowledge)
{
size_t len = pop3->ack.len - (pop3->ack.ptr - pop3->ack.buf);
status = mu_pop3_readline (pop3, pop3->ack.ptr, len, &n);
pop3->ack.ptr += n;
if (status == 0)
{
len = pop3->ack.ptr - pop3->ack.buf;
if (len && pop3->ack.buf[len - 1] == '\n')
pop3->ack.buf[len - 1] = '\0';
pop3->acknowledge = 1; /* Flag that we have the ack. */
pop3->ack.ptr = pop3->ack.buf;
}
else
{
/* Provide them with an error. */
const char *econ = "-ERR POP3 IO ERROR";
n = strlen (econ);
strcpy (pop3->ack.buf, econ);
}
}
else
n = strlen (pop3->ack.buf);
if (buffer)
{
buflen--; /* Leave space for the NULL. */
n = (buflen < n) ? buflen : n;
memcpy (buffer, pop3->ack.buf, n);
buffer[n] = '\0';
}
if (pnread)
*pnread = n;
return status;
}