pop3_retr.c
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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 1999, 2000, 2001 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 2 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 <stdlib.h>
#include <errno.h>
#include <mailutils/sys/pop3.h>
int
mu_pop3_retr (mu_pop3_t pop3, unsigned int msgno, mu_stream_t *pstream)
{
int status;
if (pop3 == NULL || msgno == 0)
return EINVAL;
if (pstream == NULL)
return MU_ERR_OUT_PTR_NULL;
switch (pop3->state)
{
case MU_POP3_NO_STATE:
status = mu_pop3_writeline (pop3, "RETR %d\r\n", msgno);
MU_POP3_CHECK_ERROR (pop3, status);
mu_pop3_debug_cmd (pop3);
pop3->state = MU_POP3_RETR;
case MU_POP3_RETR:
status = mu_pop3_send (pop3);
MU_POP3_CHECK_EAGAIN (pop3, status);
pop3->acknowledge = 0;
pop3->state = MU_POP3_RETR_ACK;
case MU_POP3_RETR_ACK:
status = mu_pop3_response (pop3, NULL, 0, NULL);
MU_POP3_CHECK_EAGAIN (pop3, status);
mu_pop3_debug_ack (pop3);
MU_POP3_CHECK_OK (pop3);
pop3->state = MU_POP3_RETR_RX;
case MU_POP3_RETR_RX:
status = mu_pop3_stream_create (pop3, pstream);
MU_POP3_CHECK_ERROR (pop3, status);
break;
/* They must deal with the error first by reopening. */
case MU_POP3_ERROR:
status = ECANCELED;
break;
default:
status = EINPROGRESS;
}
return status;
}