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acl.c
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acl.c
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/* $Id: acl.c,v 1.91 2009/06/08 23:40:06 manu Exp $ */
/*
* Copyright (c) 2004-2007 Emmanuel Dreyfus
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Emmanuel Dreyfus
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#ifdef HAVE_SYS_CDEFS_H
#include <sys/cdefs.h>
#ifdef __RCSID
__RCSID("$Id: acl.c,v 1.91 2009/06/08 23:40:06 manu Exp $");
#endif
#endif
#ifdef HAVE_OLD_QUEUE_H
#include "queue.h"
#else
#include <sys/queue.h>
#endif
#include <errno.h>
#include <stdio.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <syslog.h>
#include <pthread.h>
#include <sysexits.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <regex.h>
#include "spf.h"
#include "acl.h"
#include "conf.h"
#include "sync.h"
#include "list.h"
#ifdef USE_DNSRBL
#include "dnsrbl.h"
#endif
#ifdef USE_CURL
#include "urlcheck.h"
#endif
#ifdef USE_LDAP
#include "ldapcheck.h"
#endif
#if defined(USE_CURL) || defined(USE_LDAP)
#include "prop.h"
#endif
#ifdef USE_GEOIP
#include "geoip.h"
#endif
#ifdef USE_P0F
#include "p0f.h"
#endif
#if (defined(HAVE_SPF) || defined(HAVE_SPF_ALT) || \
defined(HAVE_SPF2_10) || defined(HAVE_SPF2))
#include "spf.h"
#endif
#ifdef USE_DKIM
#include "dkimcheck.h"
#endif
#ifdef USE_SPAMD
#include "spamd.h"
#endif
#include "macro.h"
#include "clock.h"
#include "milter-greylist.h"
#ifdef USE_DMALLOC
#include <dmalloc.h>
#endif
struct acllist acl_head;
pthread_rwlock_t acl_lock;
static struct acl_entry *gacl;
int gneg;
char *acl_print_netblock(acl_data_t *, char *, size_t);
char *acl_print_string(acl_data_t *, char *, size_t);
char *acl_print_regex(acl_data_t *, char *, size_t);
char *acl_print_list(acl_data_t *, char *, size_t);
char *acl_print_null(acl_data_t *, char *, size_t);
char *acl_print_opnum(acl_data_t *, char *, size_t);
int acl_opnum_cmp(int, enum operator, int);
void acl_free_entry(struct acl_entry *);
void acl_free_netblock(acl_data_t *);
void acl_free_string(acl_data_t *);
void acl_free_regex(acl_data_t *);
void acl_add_netblock(acl_data_t *, void *);
void acl_add_string(acl_data_t *, void *);
void acl_add_regex(acl_data_t *, void *);
void acl_add_body_string(acl_data_t *, void *);
void acl_add_body_regex(acl_data_t *, void *);
void acl_add_macro(acl_data_t *, void *);
void acl_add_opnum(acl_data_t *, void *);
void acl_add_opnum_body(acl_data_t *, void *);
void acl_add_list(acl_data_t *, void *);
char *acl_print_macro(acl_data_t *, char *, size_t);
#ifdef USE_DNSRBL
void acl_add_dnsrbl(acl_data_t *, void *);
char *acl_print_dnsrbl(acl_data_t *, char *, size_t);
#endif
#ifdef USE_CURL
void acl_add_urlcheck(acl_data_t *, void *);
char *acl_print_urlcheck(acl_data_t *, char *, size_t);
#endif
#ifdef USE_LDAP
void acl_add_ldapcheck(acl_data_t *, void *);
char *acl_print_ldapcheck(acl_data_t *, char *, size_t);
#endif
#if defined(USE_CURL) || defined(USE_LDAP)
void acl_add_prop_string(acl_data_t *, void *);
void acl_add_prop_regex(acl_data_t *, void *);
char *acl_print_prop_string(acl_data_t *, char *, size_t);
char *acl_print_prop_regex(acl_data_t *, char *, size_t);
void acl_free_prop_string(acl_data_t *);
void acl_free_prop_regex(acl_data_t *);
#endif
struct acl_clause_rec acl_clause_rec[] = {
/* Temporary types for lists */
{ AC_LIST, MULTIPLE_OK, AS_NONE, "list",
AT_LIST, AC_NONE, AC_NONE, EXF_NONE,
acl_print_list, acl_add_list,
NULL, acl_list_filter },
{ AC_EMAIL, MULTIPLE_OK, AS_NONE, "email",
AT_NONE, AC_NONE, AC_NONE, EXF_NONE,
acl_print_string, acl_add_string,
acl_free_string, NULL },
{ AC_REGEX, MULTIPLE_OK, AS_NONE, "regex",
AT_NONE, AC_NONE, AC_NONE, EXF_NONE,
acl_print_regex, acl_add_regex,
acl_free_regex, NULL },
{ AC_STRING, MULTIPLE_OK, AS_NONE, "string",
AT_NONE, AC_NONE, AC_NONE, EXF_NONE,
acl_print_string, acl_add_string,
acl_free_string, NULL },
/* Real types used in clauses */
{ AC_NETBLOCK, UNIQUE, AS_ANY, "net",
AT_NETBLOCK, AC_NETBLOCK_LIST, AC_NETBLOCK, EXF_ADDR,
acl_print_netblock, acl_add_netblock,
acl_free_netblock, acl_netblock_filter },
{ AC_NETBLOCK_LIST, UNIQUE, AS_ANY, "net_list",
AT_LIST, AC_NONE, AC_NONE, EXF_ADDR,
acl_print_list, acl_add_list,
NULL, acl_list_filter },
{ AC_DOMAIN, UNIQUE, AS_ANY, "domain",
AT_STRING, AC_DOMAIN_LIST, AC_DOMAIN, EXF_DOMAIN,
acl_print_string, acl_add_string,
acl_free_string, acl_domain_cmp },
{ AC_DOMAIN_RE, UNIQUE, AS_ANY, "domain_re",
AT_REGEX, AC_DOMAIN_LIST, AC_REGEX, EXF_DOMAIN,
acl_print_regex, acl_add_regex,
acl_free_regex, acl_domain_regexec },
{ AC_DOMAIN_LIST, UNIQUE, AS_ANY, "domain_list",
AT_LIST, AC_NONE, AC_NONE, EXF_DOMAIN,
acl_print_list, acl_add_list,
NULL, acl_list_filter },
{ AC_HELO, UNIQUE, AS_RCPT, "helo",
AT_STRING, AC_HELO_LIST, AC_STRING, EXF_HELO,
acl_print_string, acl_add_string,
acl_free_string, acl_helo_strstr },
{ AC_HELO_RE, UNIQUE, AS_RCPT, "helo_re",
AT_REGEX, AC_HELO_LIST, AC_REGEX, EXF_HELO,
acl_print_regex, acl_add_regex,
acl_free_regex, acl_helo_regexec },
{ AC_HELO_LIST, UNIQUE, AS_RCPT, "helo_list",
AT_LIST, AC_NONE, AC_NONE, EXF_HELO,
acl_print_list, acl_add_list,
NULL, acl_list_filter },
{ AC_FROM, UNIQUE, AS_ANY, "from",
AT_STRING, AC_FROM_LIST, AC_EMAIL, EXF_FROM,
acl_print_string, acl_add_string,
acl_free_string, acl_from_cmp },
{ AC_FROM_RE, UNIQUE, AS_ANY, "from_re",
AT_REGEX, AC_FROM_LIST, AC_REGEX, EXF_FROM,
acl_print_regex, acl_add_regex,
acl_free_regex, acl_from_regexec },
{ AC_FROM_LIST, UNIQUE, AS_ANY, "from_list",
AT_LIST, AC_NONE, AC_NONE, EXF_FROM,
acl_print_list, acl_add_list,
NULL, acl_list_filter },
{ AC_RCPT, MULTIPLE_OK, AS_ANY, "rcpt",
AT_STRING, AC_RCPT_LIST, AC_EMAIL, EXF_RCPT,
acl_print_string, acl_add_string,
acl_free_string, acl_rcpt_cmp },
{ AC_RCPT_RE, MULTIPLE_OK, AS_ANY, "rcpt_re",
AT_REGEX, AC_RCPT_LIST, AC_REGEX, EXF_RCPT,
acl_print_regex, acl_add_regex,
acl_free_regex, acl_rcpt_regexec },
{ AC_RCPT_LIST, MULTIPLE_OK, AS_ANY, "rcpt_list",
AT_LIST, AC_NONE, AC_NONE, EXF_RCPT,
acl_print_list, acl_add_list,
NULL, acl_list_filter },
{ AC_BODY, MULTIPLE_OK, AS_DATA, "body",
AT_STRING, AC_BODY_LIST, AC_STRING, EXF_BODY,
acl_print_string, acl_add_body_string,
acl_free_string, acl_body_strstr },
{ AC_BODY_RE, MULTIPLE_OK, AS_DATA, "body_re",
AT_REGEX, AC_BODY_LIST, AC_REGEX, EXF_BODY,
acl_print_regex, acl_add_body_regex,
acl_free_regex, acl_body_regexec },
{ AC_BODY_LIST, MULTIPLE_OK, AS_DATA, "body_list",
AT_LIST, AC_NONE, AC_NONE, EXF_BODY,
acl_print_list, acl_add_list,
NULL, acl_list_filter },
{ AC_HEADER, MULTIPLE_OK, AS_DATA, "header",
AT_STRING, AC_HEADER_LIST, AC_STRING, EXF_HEADER,
acl_print_string, acl_add_body_string,
acl_free_string, acl_header_strstr },
{ AC_HEADER_RE, MULTIPLE_OK, AS_DATA, "header_re",
AT_REGEX, AC_HEADER_LIST, AC_REGEX, EXF_HEADER,
acl_print_regex, acl_add_body_regex,
acl_free_regex, acl_header_regexec },
{ AC_HEADER_LIST, MULTIPLE_OK, AS_DATA, "header_list",
AT_LIST, AC_NONE, AC_NONE, EXF_HEADER,
acl_print_list, acl_add_list,
NULL, acl_list_filter },
{ AC_MACRO, MULTIPLE_OK, AS_ANY, "macro",
AT_MACRO, AC_MACRO_LIST, AC_STRING, EXF_MACRO,
acl_print_macro, acl_add_macro,
NULL, macro_check },
{ AC_MACRO_LIST, MULTIPLE_OK, AS_ANY, "macro_list",
AT_LIST, AC_NONE, AC_NONE, EXF_MACRO,
acl_print_list, acl_add_list,
NULL, acl_list_filter },
#ifdef USE_DNSRBL
{ AC_DNSRBL, MULTIPLE_OK, AS_ANY, "dnsrbl",
AT_DNSRBL, AC_DNSRBL_LIST, AC_STRING, EXF_DNSRBL,
acl_print_dnsrbl, acl_add_dnsrbl,
NULL, dnsrbl_check_source },
{ AC_DNSRBL_LIST, MULTIPLE_OK, AS_ANY, "dnsrbl_list",
AT_LIST, AC_NONE, AC_NONE, EXF_DNSRBL,
acl_print_list, acl_add_list,
NULL, acl_list_filter },
#endif
#ifdef USE_CURL
{ AC_URLCHECK, MULTIPLE_OK, AS_ANY, "urlcheck",
AT_URLCHECK, AC_URLCHECK_LIST, AC_STRING, EXF_URLCHECK,
acl_print_urlcheck, acl_add_urlcheck,
NULL, urlcheck_validate },
{ AC_URLCHECK_LIST, MULTIPLE_OK, AS_ANY, "urlcheck_list",
AT_LIST, AC_NONE, AC_NONE, EXF_URLCHECK,
acl_print_list, acl_add_list,
NULL, acl_list_filter },
#endif
#ifdef USE_LDAP
{ AC_LDAPCHECK, MULTIPLE_OK, AS_ANY, "ldapcheck",
AT_LDAPCHECK, AC_NONE, AC_STRING, EXF_LDAPCHECK,
acl_print_ldapcheck, acl_add_ldapcheck,
NULL, ldapcheck_validate },
#endif
#if defined(USE_CURL) || defined(USE_LDAP)
{ AC_PROP, MULTIPLE_OK, AS_ANY, "prop",
AT_PROP, AC_NONE, AC_PROP, EXF_PROP,
acl_print_prop_string, acl_add_prop_string,
acl_free_prop_string, prop_string_validate },
{ AC_PROP_RE, MULTIPLE_OK, AS_ANY, "prop_re",
AT_PROP, AC_NONE, AC_PROP_RE, EXF_PROP,
acl_print_prop_regex, acl_add_prop_regex,
acl_free_prop_regex, prop_regex_validate },
#endif
{ AC_AUTH, MULTIPLE_OK, AS_ANY, "auth",
AT_STRING, AC_AUTH_LIST, AC_STRING, EXF_AUTH,
acl_print_string, acl_add_string,
acl_free_string, acl_auth_strcmp },
{ AC_AUTH_RE, MULTIPLE_OK, AS_ANY, "auth_re",
AT_REGEX, AC_AUTH_LIST, AC_REGEX, EXF_AUTH,
acl_print_regex, acl_add_regex,
acl_free_regex, acl_auth_regexec },
{ AC_AUTH_LIST, MULTIPLE_OK, AS_ANY, "auth_list",
AT_LIST, AC_NONE, AC_NONE, EXF_AUTH,
acl_print_list, acl_add_list,
NULL, acl_list_filter },
{ AC_TLS, MULTIPLE_OK, AS_ANY, "tls",
AT_STRING, AC_TLS_LIST, AC_STRING, EXF_STARTTLS,
acl_print_string, acl_add_string,
acl_free_string, acl_tls_strcmp },
{ AC_TLS_RE, MULTIPLE_OK, AS_ANY, "tls_re",
AT_REGEX, AC_TLS_LIST, AC_REGEX, EXF_STARTTLS,
acl_print_regex, acl_add_regex,
acl_free_regex, acl_tls_regexec },
{ AC_TLS_LIST, MULTIPLE_OK, AS_ANY, "tls_list",
AT_LIST, AC_NONE, AC_NONE, EXF_STARTTLS,
acl_print_list, acl_add_list,
NULL, acl_list_filter },
#if (defined(HAVE_SPF) || defined(HAVE_SPF_ALT) || \
defined(HAVE_SPF2_10) || defined(HAVE_SPF2))
{ AC_SPF, MULTIPLE_OK, AS_ANY, "spf",
AT_SPF, AC_NONE, AC_SPF, EXF_SPF,
acl_print_spf, acl_add_spf,
NULL, spf_check },
#endif
#ifdef USE_DKIM
{ AC_DKIM, MULTIPLE_OK, AS_DATA, "dkim",
AT_DKIM, AC_NONE, AC_DKIM, EXF_DKIM,
acl_print_dkim, acl_add_dkim,
NULL, dkimcheck_validate },
#endif
{ AC_MSGSIZE, MULTIPLE_OK, AS_DATA, "msgsize",
AT_OPNUM, AC_NONE, AC_MSGSIZE, EXF_MSGSIZE,
acl_print_opnum, acl_add_opnum,
NULL, acl_msgsize_cmp },
{ AC_RCPTCOUNT, MULTIPLE_OK, AS_ANY, "rcptcount",
AT_OPNUM, AC_NONE, AC_RCPTCOUNT, EXF_RCPTCOUNT,
acl_print_opnum, acl_add_opnum_body,
NULL, acl_rcptcount_cmp },
{ AC_CLOCKSPEC, MULTIPLE_OK, AS_ANY, "time",
AT_CLOCKSPEC, AC_NONE, AC_CLOCKSPEC, EXF_CLOCKSPEC,
print_clockspec, add_clockspec,
clockspec_free, clockspec_filter },
{ AC_CLOCKSPEC_LIST, MULTIPLE_OK, AS_ANY, "time_list",
AT_LIST, AC_NONE, AC_NONE, EXF_CLOCKSPEC,
acl_print_list, acl_add_list,
NULL, acl_list_filter },
#ifdef USE_GEOIP
{ AC_GEOIP, MULTIPLE_OK, AS_ANY, "geoip",
AT_STRING, AC_GEOIP_LIST, AC_STRING, EXF_GEOIP,
acl_print_string, acl_add_string,
acl_free_string, geoip_filter },
{ AC_GEOIP_LIST, MULTIPLE_OK, AS_ANY, "geoip_list",
AT_LIST, AC_NONE, AC_NONE, EXF_GEOIP,
acl_print_list, acl_add_list,
NULL, acl_list_filter },
#endif
#ifdef USE_P0F
{ AC_P0F, MULTIPLE_OK, AS_ANY, "p0f",
AT_STRING, AC_P0F_LIST, AC_STRING, EXF_P0F,
acl_print_string, acl_add_string,
acl_free_string, p0f_cmp },
{ AC_P0F_RE, UNIQUE, AS_ANY, "p0f_re",
AT_REGEX, AC_P0F_LIST, AC_REGEX, EXF_DOMAIN,
acl_print_regex, acl_add_regex,
acl_free_regex, p0f_regexec },
{ AC_P0F_LIST, MULTIPLE_OK, AS_ANY, "p0f_list",
AT_LIST, AC_NONE, AC_NONE, EXF_P0F,
acl_print_list, acl_add_list,
NULL, acl_list_filter },
#endif
#ifdef USE_SPAMD
{ AC_SA, MULTIPLE_OK, AS_DATA, "spamd",
AT_NONE, AC_NONE, AC_NONE, EXF_SA,
acl_print_null, NULL, NULL, spamd_isspam },
{ AC_SASCORE, MULTIPLE_OK, AS_DATA, "spamd score",
AT_OPNUM, AC_NONE, AC_NONE, EXF_SA,
acl_print_opnum, acl_add_opnum, NULL, spamd_score },
#endif
};
struct {
acl_stage_t ss_stage;
char *ss_string;
} stage_string_rec[] = {
{ AS_NONE, "NONE" },
{ AS_RCPT, "RCPT" },
{ AS_DATA, "DATA" },
{ AS_ANY, "ANY" },
};
char *
stage_string(stage)
acl_stage_t stage;
{
int i;
int count = sizeof(stage_string_rec) / sizeof(*stage_string_rec);
for (i = 0; i < count; i++)
if (stage_string_rec[i].ss_stage == stage)
return stage_string_rec[i].ss_string;
mg_log(LOG_ERR, "unexpected ACL stage %d", stage);
exit(EX_SOFTWARE);
/* NOTREACHED */
return NULL;
}
int
acl_opnum_cmp(val1, op, val2)
int val1;
enum operator op;
int val2;
{
switch(op) {
case OP_EQ:
return (val1 == val2);
break;
case OP_NE:
return (val1 != val2);
break;
case OP_LT:
return (val1 < val2);
break;
case OP_GT:
return (val1 > val2);
break;
case OP_LE:
return (val1 <= val2);
break;
case OP_GE:
return (val1 >= val2);
break;
default:
mg_log(LOG_ERR, "unexpected operator");
exit(EX_SOFTWARE);
break;
}
/* NOTREACHED */
return 0;
}
int
acl_rcptcount_cmp(ad, stage, ap, priv)
acl_data_t *ad;
acl_stage_t stage;
struct acl_param *ap;
struct mlfi_priv *priv;
{
if (acl_opnum_cmp(priv->priv_rcptcount, ad->opnum.op, ad->opnum.num))
return 1;
return 0;
}
int
acl_msgsize_cmp(ad, stage, ap, priv)
acl_data_t *ad;
acl_stage_t stage;
struct acl_param *ap;
struct mlfi_priv *priv;
{
if (acl_opnum_cmp(priv->priv_msgcount, ad->opnum.op, ad->opnum.num))
return 1;
return 0;
}
int
acl_domain_cmp(ad, stage, ap, priv)
acl_data_t *ad;
acl_stage_t stage;
struct acl_param *ap;
struct mlfi_priv *priv;
{
char *host = priv->priv_hostname;
char *domain = ad->string;
int hidx, didx;
if ((host[0] == '\0') && domain[0] == '\0')
return 1;
if ((host[0] == '\0') || domain[0] == '\0')
return 0;
hidx = strlen(host) - 1;
didx = strlen(domain) - 1;
while ((hidx >= 0) && (didx >= 0)) {
if (tolower((int)host[hidx]) != tolower((int)domain[didx])) {
return (0);
}
hidx--;
didx--;
}
if (didx >= 0)
return (0);
if ( (conf.c_domainexact == 1) &&(hidx >= 0) && (host[hidx] != '.')) {
mg_log(LOG_INFO, "domainexact option overrides %s suffix "
"match of %s", domain, host);
return (0);
}
return (1);
}
int
acl_header_strstr(ad, stage, ap, priv)
acl_data_t *ad;
acl_stage_t stage;
struct acl_param *ap;
struct mlfi_priv *priv;
{
struct header *h;
if (stage != AS_DATA) {
mg_log(LOG_ERR, "header filter called at non DATA stage");
exit(EX_SOFTWARE);
}
TAILQ_FOREACH(h, &priv->priv_header, h_list)
if (strstr(h->h_line, ad->string) != NULL)
return 1;
return 0;
}
int
acl_body_strstr(ad, stage, ap, priv)
acl_data_t *ad;
acl_stage_t stage;
struct acl_param *ap;
struct mlfi_priv *priv;
{
struct body *b;
if (stage != AS_DATA) {
mg_log(LOG_ERR, "body filter called at non DATA stage");
exit(EX_SOFTWARE);
}
TAILQ_FOREACH(b, &priv->priv_body, b_list)
if (strstr(b->b_lines, ad->string) != NULL)
return 1;
return 0;
}
int
myregexec(priv, ad, ap, string)
struct mlfi_priv *priv;
acl_data_t *ad;
struct acl_param *ap;
const char *string;
{
size_t len;
int nmatch;
regmatch_t *pmatch = NULL;
int retval;
int i;
/*
* Placeholder for information from regexec, +1 for \0
*/
nmatch = ad->regex.nmatch + 1;
if ((pmatch = malloc(nmatch * sizeof(*pmatch))) == NULL) {
mg_log(LOG_ERR, "malloc failed: %s", strerror(errno));
exit(EX_OSERR);
}
bzero(pmatch, nmatch * sizeof(*pmatch));
/*
* The real regexec
*/
retval = regexec(ad->regex.re, string, nmatch, pmatch, 0);
if (retval != 0) /* No match */
goto out;
/*
* Add room for matched parenthesized substrings
*/
len = (ap->ap_nmatch + ad->regex.nmatch) * sizeof(*ap->ap_pmatch);;
if (len > 0) {
if ((ap->ap_pmatch = realloc(ap->ap_pmatch, len)) == NULL) {
mg_log(LOG_ERR, "realloc failed: %s", strerror(errno));
exit(EX_OSERR);
}
}
/* Move the previous matches to the end of the array */
if (ap->ap_nmatch != 0) {
memmove(&ap->ap_pmatch[ad->regex.nmatch],
&ap->ap_pmatch[0], ap->ap_nmatch * sizeof(char *));
}
bzero(&ap->ap_pmatch[0], ad->regex.nmatch * sizeof(char *));
ap->ap_nmatch += ad->regex.nmatch;
/*
* Gather the strings, skipping the first one (\0)
*/
for (i = 1; i < nmatch; i++) {
if (pmatch[i].rm_so == -1) {
mg_log(LOG_DEBUG, "unexpected void backreference no %d "
"in regex %s against \"%s\"",
i, ad->regex.re_copy, string);
break;
}
len = pmatch[i].rm_eo - pmatch[i].rm_so + 1;
if ((ap->ap_pmatch[i - 1] = malloc(len)) == NULL) {
mg_log(LOG_ERR, "malloc failed: %s", strerror(errno));
exit(EX_OSERR);
}
memcpy(ap->ap_pmatch[i - 1], string + pmatch[i].rm_so, len - 1);
ap->ap_pmatch[i - 1][len - 1] = '\0';
if (conf.c_debug)
mg_log(LOG_DEBUG,
"regex /%s/ against \"%s\": match[%d] = \"%s\"",
ad->regex.re_copy, string, i, ap->ap_pmatch[i - 1]);
}
out:
if (pmatch != NULL)
free(pmatch);
#if 0
if (conf.c_debug) {
int i;
for (i = 0; i < ap->ap_nmatch; i++)
mg_log(LOG_DEBUG,
" match[%d] = \"%s\"",
i, ap->ap_pmatch[i]);
}
#endif
return retval;
}
int
acl_helo_regexec(ad, stage, ap, priv)
acl_data_t *ad;
acl_stage_t stage;
struct acl_param *ap;
struct mlfi_priv *priv;
{
if (myregexec(priv, ad, ap, priv->priv_helo) == 0)
return 1;
return 0;
}
int
acl_from_regexec(ad, stage, ap, priv)
acl_data_t *ad;
acl_stage_t stage;
struct acl_param *ap;
struct mlfi_priv *priv;
{
if (myregexec(priv, ad, ap, priv->priv_from) == 0)
return 1;
return 0;
}
int
acl_auth_regexec(ad, stage, ap, priv)
acl_data_t *ad;
acl_stage_t stage;
struct acl_param *ap;
struct mlfi_priv *priv;
{
char *auth_authen;
auth_authen = smfi_getsymval(priv->priv_ctx, "{auth_authen}");
if (auth_authen == NULL)
return 0;
if (myregexec(priv, ad, ap, auth_authen) == 0)
return 1;
return 0;
}
int
acl_tls_regexec(ad, stage, ap, priv)
acl_data_t *ad;
acl_stage_t stage;
struct acl_param *ap;
struct mlfi_priv *priv;
{
char *verify;
char *dn;
if (((verify = smfi_getsymval(priv->priv_ctx, "{verify}")) == NULL) ||
(strcmp(verify, "OK") != 0) ||
((dn = smfi_getsymval(priv->priv_ctx, "{cert_subject}")) == NULL))
return 0;
if (myregexec(priv, ad, ap, dn) == 0)
return 1;
return 0;
}
int
acl_rcpt_regexec(ad, stage, ap, priv)
acl_data_t *ad;
acl_stage_t stage;
struct acl_param *ap;
struct mlfi_priv *priv;
{
if (stage == AS_RCPT) {
if (myregexec(priv, ad, ap, priv->priv_cur_rcpt) == 0)
return 1;
} else {
struct rcpt *r;
LIST_FOREACH(r, &priv->priv_rcpt, r_list)
if (myregexec(priv, ad, ap, r->r_addr) == 0)
return 1;
}
return 0;
}
int
acl_domain_regexec(ad, stage, ap, priv)
acl_data_t *ad;
acl_stage_t stage;
struct acl_param *ap;
struct mlfi_priv *priv;
{
if (myregexec(priv, ad, ap, priv->priv_hostname) == 0)
return 1;
return 0;
}
int
acl_header_regexec(ad, stage, ap, priv)
acl_data_t *ad;
acl_stage_t stage;
struct acl_param *ap;
struct mlfi_priv *priv;
{
struct header *h;
if (stage != AS_DATA) {
mg_log(LOG_ERR, "header filter called at non DATA stage");
exit(EX_SOFTWARE);
}
TAILQ_FOREACH(h, &priv->priv_header, h_list)
if (myregexec(priv, ad, ap, h->h_line) == 0)
return 1;
return 0;
}
int
acl_helo_strstr(ad, stage, ap, priv)
acl_data_t *ad;
acl_stage_t stage;
struct acl_param *ap;
struct mlfi_priv *priv;
{
char *helo = ad->string;
printf("-> %s/%s\n", priv->priv_helo, helo);
if (strstr(priv->priv_helo, helo) != NULL)
return 1;
return 0;
}
int
acl_from_cmp(ad, stage, ap, priv)
acl_data_t *ad;
acl_stage_t stage;
struct acl_param *ap;
struct mlfi_priv *priv;
{
char *from = ad->string;
if (emailcmp(priv->priv_from, from) == 0)
return 1;
return 0;
}
int
acl_rcpt_cmp(ad, stage, ap, priv)
acl_data_t *ad;
acl_stage_t stage;
struct acl_param *ap;
struct mlfi_priv *priv;
{
char *rcpt = ad->string;
if (stage == AS_RCPT) {
if (emailcmp(priv->priv_cur_rcpt, rcpt) == 0)
return 1;
} else {
struct rcpt *r;
LIST_FOREACH(r, &priv->priv_rcpt, r_list)
if (emailcmp(r->r_addr, rcpt) == 0)
return 1;
}
return 0;
}
int
acl_auth_strcmp(ad, stage, ap, priv)
acl_data_t *ad;
acl_stage_t stage;
struct acl_param *ap;
struct mlfi_priv *priv;
{
char *auth_authen;
auth_authen = smfi_getsymval(priv->priv_ctx, "{auth_authen}");
if (auth_authen == NULL)
return 0;
if (strcmp(auth_authen, ad->string) == 0)
return 1;
return 0;
}
int
acl_tls_strcmp(ad, stage, ap, priv)
acl_data_t *ad;
acl_stage_t stage;
struct acl_param *ap;
struct mlfi_priv *priv;
{
char *verify;
char *dn;
if (((verify = smfi_getsymval(priv->priv_ctx, "{verify}")) == NULL) ||
(strcmp(verify, "OK") != 0) ||
((dn = smfi_getsymval(priv->priv_ctx, "{cert_subject}")) == NULL))
return 0;
if (strcmp(dn, ad->string) == 0)
return 1;
return 0;
}
int
acl_list_filter(ad, stage, ap, priv)
acl_data_t *ad;
acl_stage_t stage;
struct acl_param *ap;
struct mlfi_priv *priv;
{
struct all_list_entry *ale;
struct list_entry *le;
int retval;
ale = ad->list;
TAILQ_FOREACH(le, &ale->al_head, l_list) {
retval = (*le->l_acr->acr_filter)(&le->l_data, stage, ap, priv);
if (retval != 0)
return retval;
}
return 0;
}
int
acl_body_regexec(ad, stage, ap, priv)
acl_data_t *ad;
acl_stage_t stage;
struct acl_param *ap;
struct mlfi_priv *priv;
{
struct body *b;
if (stage != AS_DATA) {
mg_log(LOG_ERR, "body filter called at non DATA stage");
exit(EX_SOFTWARE);
}
TAILQ_FOREACH(b, &priv->priv_body, b_list)
if (myregexec(priv, ad, ap, b->b_lines) == 0)
return 1;
return 0;
}
struct acl_clause_rec *
acl_list_item_fixup(item_type, list_type)
acl_clause_t item_type;
acl_clause_t list_type;
{
struct acl_clause_rec *cur_acr;
int i;
int count = sizeof(acl_clause_rec) / sizeof(*acl_clause_rec);
for (i = 0; i < count; i++) {
cur_acr = &acl_clause_rec[i];
if ((cur_acr->acr_list_type == list_type) &&
(cur_acr->acr_item_type == item_type))
return cur_acr;
}
return NULL;
}
struct acl_clause_rec *
get_acl_clause_rec(type)
acl_clause_t type;
{
int i;
int count = sizeof(acl_clause_rec) / sizeof(*acl_clause_rec);
for (i = 0; i < count; i++)
if (acl_clause_rec[i].acr_type == type)
return &acl_clause_rec[i];
mg_log(LOG_ERR, "unexpected acl clause type %d", type);
exit(EX_SOFTWARE);
/* NOTREACHED */
return NULL;
}
char *
acl_print_string(ad, buf, len)
acl_data_t *ad;
char *buf;
size_t len;
{
snprintf(buf, len, "\"%s\"", ad->string);
return buf;
}
char *
acl_print_regex(ad, buf, len)
acl_data_t *ad;
char *buf;
size_t len;
{
snprintf(buf, len, "%s", ad->regex.re_copy);
return buf;
}
char *
acl_print_list(ad, buf, len)
acl_data_t *ad;
char *buf;
size_t len;
{
snprintf(buf, len, "\"%s\"", ad->list->al_name);
return buf;
}
char *
acl_print_null(ad, buf, len)
acl_data_t *ad;
char *buf;
size_t len;
{
if (len > 0)
buf[0] = '\0';
return buf;
}
char *
acl_print_opnum(ad, buf, len)
acl_data_t *ad;
char *buf;
size_t len;
{
struct {
enum operator op;
char *str;
} op_to_str[] = {
{ OP_EQ, "==" },
{ OP_NE, "!=" },
{ OP_GT, ">" },
{ OP_LT, "<" },
{ OP_GE, ">=" },
{ OP_LE, "<=" },
};
int i;
char *str = NULL;
for (i = 0; i < sizeof(op_to_str) / sizeof(*op_to_str); i++) {
if (op_to_str[i].op == ad->opnum.op) {
str = op_to_str[i].str;
break;
}
}
if (str == NULL) {
mg_log(LOG_ERR, "unexpected operator");