pop3_uidl.c
2.76 KB
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/* GNU mailutils - a suite of utilities for electronic mail
Copyright (C) 1999, 2000, 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 Library 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 Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#ifdef HAVE_STRING_H
# include <string.h>
#else
# include <strings.h>
#endif
#include <stdlib.h>
#include <mailutils/sys/pop3.h>
static int
pop3_uidl0 (pop3_t pop3, unsigned msgno, char **uidl)
{
int status;
switch (pop3->state)
{
case POP3_NO_STATE:
if (uidl == NULL)
return MU_ERROR_INVALID_PARAMETER;
status = pop3_writeline (pop3, "UIDL %d\r\n", msgno);
POP3_CHECK_ERROR (pop3, status);
pop3->state = POP3_UIDL;
case POP3_UIDL:
status = pop3_send (pop3);
POP3_CHECK_EAGAIN (pop3, status);
pop3->acknowledge = 0;
pop3->state = POP3_UIDL_ACK;
case POP3_UIDL_ACK:
status = pop3_response (pop3, NULL, 0, NULL);
POP3_CHECK_EAGAIN (pop3, status);
POP3_CHECK_OK (pop3);
pop3->state = POP3_NO_STATE;
*uidl = NULL;
{
char *space;
/* Pass the "+OK". */
space = strchr (pop3->ack.buf, ' ');
if (space)
{
/* Pass the number. */
space = strchr (space, ' ');
if (space)
{
size_t 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 = MU_ERROR_NO_MEMORY;
}
break;
/* They must deal with the error first by reopening. */
case POP3_ERROR:
status = MU_ERROR_OPERATION_CANCELED;
break;
default:
status = MU_ERROR_OPERATION_IN_PROGRESS;
}
return status;
}
int
pop3_uidl (pop3_t pop3, unsigned msgno, char **uidl)
{
int status;
if (pop3 == NULL)
return MU_ERROR_INVALID_PARAMETER;
monitor_lock (pop3->lock);
monitor_cleanup_push (pop3_cleanup, pop3);
status = pop3_uidl0 (pop3, msgno, uidl);
monitor_unlock (pop3->lock);
monitor_cleanup_pop (0);
return status;
}