match-regexp.c

/* $Id$ */

/*
 * Copyright (c) 2006 Nicholas Marriott <nicholas.marriott@gmail.com>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF MIND, 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.
 */

#include<sys/types.h>

#include<regex.h>

#include"fdm.h"
#include"match.h"

intmatch_regexp_match(structmail_ctx*, structexpritem*);
voidmatch_regexp_desc(structexpritem*, char*, size_t);

structmatchmatch_regexp= {
"regexp",
match_regexp_match,
match_regexp_desc
};

int
match_regexp_match(structmail_ctx*mctx, structexpritem*ei)
{
structmatch_regexp_data*data=ei->data;
structaccount*a=mctx->account;
structmail*m=mctx->mail;
intres;
char*cause;
size_tso, eo;

so=0;
eo=m->size;
switch (data->area) {
caseAREA_HEADERS:
if (m->body==0)
return (MATCH_FALSE);
eo=m->body;
break;
caseAREA_BODY:
so=m->body;
break;
caseAREA_ANY:
break;
 }
log_debug3("%s: matching from %zu to %zu (size=%zu, body=%zu)", a->name,
so, eo, m->size, m->body);

res=re_block(&data->re, m->data+so, eo-so, &m->rml, &cause);
if (res==-1) {
log_warnx("%s: %s", a->name, cause);
xfree(cause);
return (MATCH_ERROR);
 }
if (res==0)
return (MATCH_FALSE);
return (MATCH_TRUE);
}

void
match_regexp_desc(structexpritem*ei, char*buf, size_tlen)
{
structmatch_regexp_data*data=ei->data;
constchar*area=NULL;

switch (data->area) {
caseAREA_BODY:
area="body";
break;
caseAREA_HEADERS:
area="headers";
break;
caseAREA_ANY:
area="any";
break;
 }

xsnprintf(buf, len, "regexp \"%s\" in %s", data->re.str, area);
}