response.c
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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 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, see
<http://www.gnu.org/licenses/>. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <mailutils/cctype.h>
#include <mailutils/cstr.h>
#include <mailutils/stream.h>
#include <mailutils/errno.h>
#include <mailutils/sys/imap.h>
#define IS_PREFIX(s, len, pfx) \
((len) >= sizeof (pfx) - 1 && \
memcmp ((s), (pfx), sizeof (pfx) - 1) == 0 && \
s[sizeof (pfx) - 1] == ' ')
int
_mu_imap_response (mu_imap_t imap)
{
size_t n = 0;
int status = 0;
if (imap == NULL)
return EINVAL;
if (MU_IMAP_FISSET (imap, MU_IMAP_RESP))
return 0;
_mu_imap_clrerrstr (imap);
if (imap->untagged_resp)
mu_list_clear (imap->untagged_resp);
else
{
status = mu_list_create (&imap->untagged_resp);
MU_IMAP_CHECK_ERROR (imap, status);
mu_list_set_destroy_item (imap->untagged_resp, mu_list_free_item);
}
while (1)
{
status = mu_stream_getline (imap->carrier, &imap->rdbuf,
&imap->rdsize, NULL);
if (status == 0)
{
n = mu_rtrim_class (imap->rdbuf, MU_CTYPE_SPACE);
if (imap->rdbuf[0] == '*' && imap->rdbuf[1] == ' ')
{
char *p = mu_str_skip_cset (imap->rdbuf + 2, " ");
mu_list_append (imap->untagged_resp, strdup (p));
}
else if (n > imap->tag_len + 3 &&
memcmp (imap->rdbuf, imap->tag_str, imap->tag_len) == 0
&& imap->rdbuf[imap->tag_len] == ' ')
{
char *p = mu_str_skip_cset (imap->rdbuf + imap->tag_len, " ");
size_t len = strlen (p);
if (len >= imap->tagsize)
{
char *np = realloc (imap->tagbuf, len + 1);
if (!np)
{
imap->state = MU_IMAP_ERROR;
return ENOMEM;
}
imap->tagsize = len + 1;
imap->tagbuf = np;
}
strcpy (imap->tagbuf, p);
if (IS_PREFIX (p, len, "OK"))
{
imap->resp_code = MU_IMAP_OK;
p = mu_str_skip_cset (p + 2, " ");
_mu_imap_seterrstr (imap, p, strlen (p));
}
else if (IS_PREFIX (p, len, "NO"))
{
imap->resp_code = MU_IMAP_NO;
p = mu_str_skip_cset (p + 2, " ");
_mu_imap_seterrstr (imap, p, strlen (p));
}
else if (IS_PREFIX (p, len, "BAD"))
{
imap->resp_code = MU_IMAP_BAD;
p = mu_str_skip_cset (p + 2, " ");
_mu_imap_seterrstr (imap, p, strlen (p));
}
else
status = MU_ERR_BADREPLY;
MU_IMAP_FSET (imap, MU_IMAP_RESP);
break;
}
else
{
imap->state = MU_IMAP_ERROR;
return MU_ERR_BADREPLY;
}
}
else
{
imap->state = MU_IMAP_ERROR;
return status;
}
}
return status;
}