pop3_uidl.c
2.7 KB
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <string.h>
#include <errno.h>
#include <stdlib.h>
#include <mailutils/sys/pop3.h>
int
mu_pop3_uidl (mu_pop3_t pop3, unsigned int msgno, char **uidl)
{
int status;
if (pop3 == NULL)
return EINVAL;
if (uidl == NULL)
return MU_ERR_OUT_PTR_NULL;
switch (pop3->state)
{
case MU_POP3_NO_STATE:
status = mu_pop3_writeline (pop3, "UIDL %d\r\n", msgno);
MU_POP3_CHECK_ERROR (pop3, status);
mu_pop3_debug_cmd (pop3);
pop3->state = MU_POP3_UIDL;
case MU_POP3_UIDL:
status = mu_pop3_send (pop3);
MU_POP3_CHECK_EAGAIN (pop3, status);
pop3->acknowledge = 0;
pop3->state = MU_POP3_UIDL_ACK;
case MU_POP3_UIDL_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_NO_STATE;
*uidl = NULL;
{
char *space;
/* Format: +OK msgno uidlstring */
/* Pass the "+OK". */
space = strchr (pop3->ack.buf, ' ');
if (space)
{
/* Skip spaces. */
while (*space == ' ') space++;
/* Pass the number. */
space = strchr (space, ' ');
if (space)
{
size_t len;
/* Skip spaces between msgno and uidlstring */
while (*space == ' ') space++;
len = strlen (space);
if (space[len - 1] == '\n')
{
space[len - 1] = '\0';
len--;
}
*uidl = calloc (len + 1, 1);
if (*uidl)
memcpy (*uidl, space, len);
}
}
}
if (*uidl == NULL) /* What can we do? */
{
*uidl = malloc (1);
if (*uidl)
**uidl = '\0';
else
status = ENOMEM;
}
break;
/* They must deal with the error first by reopening. */
case MU_POP3_ERROR:
status = ECANCELED;
break;
default:
status = EINPROGRESS;
}
return status;
}