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interp.c
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/* interp.c -- sieve script interpretor builder
* Larry Greenfield
*
* Copyright (c) 1994-2008 Carnegie Mellon University. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The name "Carnegie Mellon University" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For permission or any legal
* details, please contact
* Carnegie Mellon University
* Center for Technology Transfer and Enterprise Creation
* 4615 Forbes Avenue
* Suite 302
* Pittsburgh, PA 15213
* (412) 268-7393, fax: (412) 268-7395
* innovation@andrew.cmu.edu
*
* 4. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by Computing Services
* at Carnegie Mellon University (http://www.cmu.edu/computing/)."
*
* CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
* THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdlib.h>
#include <string.h>
#include "xmalloc.h"
#include "xstrlcat.h"
#include "sieve_interface.h"
#include "interp.h"
#include "libconfig.h"
#include "times.h"
#define EXT_LEN 4096
/* build a sieve interpretor */
EXPORTED sieve_interp_t *sieve_interp_alloc(void *interp_context)
{
sieve_interp_t *i;
static int initonce;
if (!initonce) {
initialize_siev_error_table();
initonce = 1;
}
i = (sieve_interp_t *) xmalloc(sizeof(sieve_interp_t));
i->redirect = i->discard = i->reject = i->fileinto = i->keep = NULL;
i->getsize = NULL;
i->getheader = NULL;
i->getenvelope = NULL;
i->getbody = NULL;
i->getinclude = NULL;
i->vacation = NULL;
i->notify = NULL;
i->markflags = NULL;
i->interp_context = interp_context;
i->err = NULL;
i->lastitem = NULL;
i->extensions[0] = '\0';
i->time = time(NULL);
return i;
}
EXPORTED const char *sieve_listextensions(sieve_interp_t *i)
{
if (i->extensions[0] == '\0') {
unsigned long config_sieve_extensions =
config_getbitfield(IMAPOPT_SIEVE_EXTENSIONS);
/* add comparators */
strlcat(i->extensions, "comparator-i;ascii-numeric", EXT_LEN);
/* add actions */
if (i->fileinto &&
(config_sieve_extensions & IMAP_ENUM_SIEVE_EXTENSIONS_FILEINTO))
strlcat(i->extensions, " fileinto", EXT_LEN);
if (i->reject &&
(config_sieve_extensions & IMAP_ENUM_SIEVE_EXTENSIONS_REJECT))
strlcat(i->extensions, " reject", EXT_LEN);
if (i->vacation &&
(config_sieve_extensions & IMAP_ENUM_SIEVE_EXTENSIONS_VACATION_SECONDS))
strlcat(i->extensions, " vacation vacation-seconds", EXT_LEN);
else if (i->vacation &&
(config_sieve_extensions & IMAP_ENUM_SIEVE_EXTENSIONS_VACATION))
strlcat(i->extensions, " vacation", EXT_LEN);
if (i->markflags &&
(config_sieve_extensions & IMAP_ENUM_SIEVE_EXTENSIONS_IMAPFLAGS))
strlcat(i->extensions, " imapflags", EXT_LEN);
if (i->notify &&
(config_sieve_extensions & IMAP_ENUM_SIEVE_EXTENSIONS_NOTIFY))
strlcat(i->extensions, " notify", EXT_LEN);
if (i->getinclude &&
(config_sieve_extensions & IMAP_ENUM_SIEVE_EXTENSIONS_INCLUDE))
strlcat(i->extensions, " include", EXT_LEN);
/* add tests */
if (i->getenvelope &&
(config_sieve_extensions & IMAP_ENUM_SIEVE_EXTENSIONS_ENVELOPE))
strlcat(i->extensions, " envelope", EXT_LEN);
if (i->getbody &&
(config_sieve_extensions & IMAP_ENUM_SIEVE_EXTENSIONS_BODY))
strlcat(i->extensions, " body", EXT_LEN);
if (config_sieve_extensions & IMAP_ENUM_SIEVE_EXTENSIONS_IMAP4FLAGS)
strlcat(i->extensions, " imap4flags", EXT_LEN);
/* add match-types */
if (config_sieve_extensions & IMAP_ENUM_SIEVE_EXTENSIONS_RELATIONAL)
strlcat(i->extensions, " relational", EXT_LEN);
#ifdef ENABLE_REGEX
if (config_sieve_extensions & IMAP_ENUM_SIEVE_EXTENSIONS_REGEX)
strlcat(i->extensions, " regex", EXT_LEN);
#endif
/* add misc extensions */
if (config_sieve_extensions & IMAP_ENUM_SIEVE_EXTENSIONS_SUBADDRESS)
strlcat(i->extensions, " subaddress", EXT_LEN);
if (config_sieve_extensions & IMAP_ENUM_SIEVE_EXTENSIONS_COPY)
strlcat(i->extensions, " copy", EXT_LEN);
if (config_sieve_extensions & IMAP_ENUM_SIEVE_EXTENSIONS_DATE)
strlcat(i->extensions, " date", EXT_LEN);
}
return i->extensions;
}
EXPORTED int sieve_interp_free(sieve_interp_t **interp)
{
if (*interp) {
free((*interp)->lastitem);
free(*interp);
*interp = NULL;
}
return SIEVE_OK;
}
/* add the callbacks */
EXPORTED void sieve_register_redirect(sieve_interp_t *interp, sieve_callback *f)
{
interp->redirect = f;
}
EXPORTED void sieve_register_discard(sieve_interp_t *interp, sieve_callback *f)
{
interp->discard = f;
}
EXPORTED void sieve_register_reject(sieve_interp_t *interp, sieve_callback *f)
{
interp->reject = f;
}
EXPORTED void sieve_register_fileinto(sieve_interp_t *interp, sieve_callback *f)
{
interp->fileinto = f;
}
EXPORTED void sieve_register_keep(sieve_interp_t *interp, sieve_callback *f)
{
interp->keep = f;
}
EXPORTED void sieve_register_imapflags(sieve_interp_t *interp, const strarray_t *mark)
{
static strarray_t default_mark = STRARRAY_INITIALIZER;
if (!default_mark.count)
strarray_append(&default_mark, "\\flagged");
interp->markflags =
(mark && mark->data && mark->count) ? mark : &default_mark;
}
EXPORTED void sieve_register_notify(sieve_interp_t *interp, sieve_callback *f)
{
interp->notify = f;
}
/* add the callbacks for messages. again, undefined if used after
sieve_script_parse */
EXPORTED void sieve_register_size(sieve_interp_t *interp, sieve_get_size *f)
{
interp->getsize = f;
}
EXPORTED void sieve_register_header(sieve_interp_t *interp, sieve_get_header *f)
{
interp->getheader = f;
}
EXPORTED void sieve_register_envelope(sieve_interp_t *interp, sieve_get_envelope *f)
{
interp->getenvelope = f;
}
EXPORTED void sieve_register_include(sieve_interp_t *interp, sieve_get_include *f)
{
interp->getinclude = f;
}
EXPORTED void sieve_register_body(sieve_interp_t *interp, sieve_get_body *f)
{
interp->getbody = f;
}
EXPORTED int sieve_register_vacation(sieve_interp_t *interp, sieve_vacation_t *v)
{
if (!interp->getenvelope) {
return SIEVE_NOT_FINALIZED; /* we need envelope for vacation! */
}
if (v->min_response == 0)
v->min_response = config_getint(IMAPOPT_SIEVE_VACATION_MIN_RESPONSE);
if (v->max_response == 0)
v->max_response = config_getint(IMAPOPT_SIEVE_VACATION_MAX_RESPONSE);
if (v->min_response < 0 || v->max_response < 7 * DAY2SEC || !v->autorespond
|| !v->send_response) {
return SIEVE_FAIL;
}
interp->vacation = v;
return SIEVE_OK;
}
EXPORTED void sieve_register_parse_error(sieve_interp_t *interp, sieve_parse_error *f)
{
interp->err = f;
}
EXPORTED void sieve_register_execute_error(sieve_interp_t *interp, sieve_execute_error *f)
{
interp->execute_err = f;
}
int interp_verify(sieve_interp_t *i)
{
if (i->redirect && i->keep && i->getsize && i->getheader) {
return SIEVE_OK;
} else {
return SIEVE_NOT_FINALIZED;
}
}

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