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apache / httpd / refs/tags/2.4.55 / . / modules / md / mod_md_config.c
blob: 2f193005849f67d5777407bb8746ffd7893bc067 [file] [log] [blame]
/* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <assert.h>
#include <apr_lib.h>
#include <apr_strings.h>
#include <httpd.h>
#include <http_core.h>
#include <http_config.h>
#include <http_log.h>
#include <http_vhost.h>
#include "md.h"
#include "md_acme.h"
#include "md_crypt.h"
#include "md_log.h"
#include "md_json.h"
#include "md_util.h"
#include "mod_md_private.h"
#include "mod_md_config.h"
#define MD_CMD_MD_SECTION "<MDomainSet"
#define MD_CMD_MD2_SECTION "<MDomain"
#define DEF_VAL (-1)
#ifndef MD_DEFAULT_BASE_DIR
#define MD_DEFAULT_BASE_DIR "md"
#endif
static md_timeslice_t def_ocsp_keep_window = {
0,
MD_TIME_OCSP_KEEP_NORM,
};
static md_timeslice_t def_ocsp_renew_window = {
MD_TIME_LIFE_NORM,
MD_TIME_RENEW_WINDOW_DEF,
};
/* Default settings for the global conf */
static md_mod_conf_t defmc = {
NULL, /* list of mds */
#if AP_MODULE_MAGIC_AT_LEAST(20180906, 2)
NULL, /* base dirm by default state-dir-relative */
#else
MD_DEFAULT_BASE_DIR,
#endif
NULL, /* proxy url for outgoing http */
NULL, /* md_reg_t */
NULL, /* md_ocsp_reg_t */
80, /* local http: port */
443, /* local https: port */
-1, /* can http: */
-1, /* can https: */
0, /* manage base server */
MD_HSTS_MAX_AGE_DEFAULT, /* hsts max-age */
NULL, /* hsts headers */
NULL, /* unused names */
NULL, /* init errors hash */
NULL, /* notify cmd */
NULL, /* message cmd */
NULL, /* env table */
0, /* dry_run flag */
1, /* server_status_enabled */
1, /* certificate_status_enabled */
&def_ocsp_keep_window, /* default time to keep ocsp responses */
&def_ocsp_renew_window, /* default time to renew ocsp responses */
"crt.sh", /* default cert checker site name */
"https://crt.sh?q=", /* default cert checker site url */
NULL, /* CA cert file to use */
apr_time_from_sec(5), /* minimum delay for retries */
13, /* retry_failover after 14 errors, with 5s delay ~ half a day */
0, /* store locks, disabled by default */
apr_time_from_sec(5), /* max time to wait to obaint a store lock */
};
static md_timeslice_t def_renew_window = {
MD_TIME_LIFE_NORM,
MD_TIME_RENEW_WINDOW_DEF,
};
static md_timeslice_t def_warn_window = {
MD_TIME_LIFE_NORM,
MD_TIME_WARN_WINDOW_DEF,
};
/* Default server specific setting */
static md_srv_conf_t defconf = {
"default", /* name */
NULL, /* server_rec */
&defmc, /* mc */
1, /* transitive */
MD_REQUIRE_OFF, /* require https */
MD_RENEW_AUTO, /* renew mode */
0, /* must staple */
NULL, /* pkey spec */
&def_renew_window, /* renew window */
&def_warn_window, /* warn window */
NULL, /* ca urls */
NULL, /* ca contact (email) */
MD_PROTO_ACME, /* ca protocol */
NULL, /* ca agreemnent */
NULL, /* ca challenges array */
NULL, /* ca eab kid */
NULL, /* ca eab hmac */
0, /* stapling */
1, /* staple others */
NULL, /* currently defined md */
NULL, /* assigned md, post config */
0, /* is_ssl, set during mod_ssl post_config */
};
static md_mod_conf_t *mod_md_config;
static apr_status_t cleanup_mod_config(void *dummy)
{
(void)dummy;
mod_md_config = NULL;
return APR_SUCCESS;
}
static md_mod_conf_t *md_mod_conf_get(apr_pool_t *pool, int create)
{
if (mod_md_config) {
return mod_md_config; /* reused for lifetime of the pool */
}
if (create) {
mod_md_config = apr_pcalloc(pool, sizeof(*mod_md_config));
memcpy(mod_md_config, &defmc, sizeof(*mod_md_config));
mod_md_config->mds = apr_array_make(pool, 5, sizeof(const md_t *));
mod_md_config->unused_names = apr_array_make(pool, 5, sizeof(const md_t *));
mod_md_config->env = apr_table_make(pool, 10);
mod_md_config->init_errors = apr_hash_make(pool);
apr_pool_cleanup_register(pool, NULL, cleanup_mod_config, apr_pool_cleanup_null);
}
return mod_md_config;
}
#define CONF_S_NAME(s) (s && s->server_hostname? s->server_hostname : "default")
static void srv_conf_props_clear(md_srv_conf_t *sc)
{
sc->transitive = DEF_VAL;
sc->require_https = MD_REQUIRE_UNSET;
sc->renew_mode = DEF_VAL;
sc->must_staple = DEF_VAL;
sc->pks = NULL;
sc->renew_window = NULL;
sc->warn_window = NULL;
sc->ca_urls = NULL;
sc->ca_contact = NULL;
sc->ca_proto = NULL;
sc->ca_agreement = NULL;
sc->ca_challenges = NULL;
sc->ca_eab_kid = NULL;
sc->ca_eab_hmac = NULL;
sc->stapling = DEF_VAL;
sc->staple_others = DEF_VAL;
}
static void srv_conf_props_copy(md_srv_conf_t *to, const md_srv_conf_t *from)
{
to->transitive = from->transitive;
to->require_https = from->require_https;
to->renew_mode = from->renew_mode;
to->must_staple = from->must_staple;
to->pks = from->pks;
to->warn_window = from->warn_window;
to->renew_window = from->renew_window;
to->ca_urls = from->ca_urls;
to->ca_contact = from->ca_contact;
to->ca_proto = from->ca_proto;
to->ca_agreement = from->ca_agreement;
to->ca_challenges = from->ca_challenges;
to->ca_eab_kid = from->ca_eab_kid;
to->ca_eab_hmac = from->ca_eab_hmac;
to->stapling = from->stapling;
to->staple_others = from->staple_others;
}
static void srv_conf_props_apply(md_t *md, const md_srv_conf_t *from, apr_pool_t *p)
{
if (from->require_https != MD_REQUIRE_UNSET) md->require_https = from->require_https;
if (from->transitive != DEF_VAL) md->transitive = from->transitive;
if (from->renew_mode != DEF_VAL) md->renew_mode = from->renew_mode;
if (from->must_staple != DEF_VAL) md->must_staple = from->must_staple;
if (from->pks) md->pks = md_pkeys_spec_clone(p, from->pks);
if (from->renew_window) md->renew_window = from->renew_window;
if (from->warn_window) md->warn_window = from->warn_window;
if (from->ca_urls) md->ca_urls = apr_array_copy(p, from->ca_urls);
if (from->ca_proto) md->ca_proto = from->ca_proto;
if (from->ca_agreement) md->ca_agreement = from->ca_agreement;
if (from->ca_contact) {
apr_array_clear(md->contacts);
APR_ARRAY_PUSH(md->contacts, const char *) =
md_util_schemify(p, from->ca_contact, "mailto");
}
if (from->ca_challenges) md->ca_challenges = apr_array_copy(p, from->ca_challenges);
if (from->ca_eab_kid) md->ca_eab_kid = from->ca_eab_kid;
if (from->ca_eab_hmac) md->ca_eab_hmac = from->ca_eab_hmac;
if (from->stapling != DEF_VAL) md->stapling = from->stapling;
}
void *md_config_create_svr(apr_pool_t *pool, server_rec *s)
{
md_srv_conf_t *conf = (md_srv_conf_t *)apr_pcalloc(pool, sizeof(md_srv_conf_t));
conf->name = apr_pstrcat(pool, "srv[", CONF_S_NAME(s), "]", NULL);
conf->s = s;
conf->mc = md_mod_conf_get(pool, 1);
srv_conf_props_clear(conf);
return conf;
}
static void *md_config_merge(apr_pool_t *pool, void *basev, void *addv)
{
md_srv_conf_t *base = (md_srv_conf_t *)basev;
md_srv_conf_t *add = (md_srv_conf_t *)addv;
md_srv_conf_t *nsc;
char *name = apr_pstrcat(pool, "[", CONF_S_NAME(add->s), ", ", CONF_S_NAME(base->s), "]", NULL);
nsc = (md_srv_conf_t *)apr_pcalloc(pool, sizeof(md_srv_conf_t));
nsc->name = name;
nsc->mc = add->mc? add->mc : base->mc;
nsc->transitive = (add->transitive != DEF_VAL)? add->transitive : base->transitive;
nsc->require_https = (add->require_https != MD_REQUIRE_UNSET)? add->require_https : base->require_https;
nsc->renew_mode = (add->renew_mode != DEF_VAL)? add->renew_mode : base->renew_mode;
nsc->must_staple = (add->must_staple != DEF_VAL)? add->must_staple : base->must_staple;
nsc->pks = (!md_pkeys_spec_is_empty(add->pks))? add->pks : base->pks;
nsc->renew_window = add->renew_window? add->renew_window : base->renew_window;
nsc->warn_window = add->warn_window? add->warn_window : base->warn_window;
nsc->ca_urls = add->ca_urls? apr_array_copy(pool, add->ca_urls)
: (base->ca_urls? apr_array_copy(pool, base->ca_urls) : NULL);
nsc->ca_contact = add->ca_contact? add->ca_contact : base->ca_contact;
nsc->ca_proto = add->ca_proto? add->ca_proto : base->ca_proto;
nsc->ca_agreement = add->ca_agreement? add->ca_agreement : base->ca_agreement;
nsc->ca_challenges = (add->ca_challenges? apr_array_copy(pool, add->ca_challenges)
: (base->ca_challenges? apr_array_copy(pool, base->ca_challenges) : NULL));
nsc->ca_eab_kid = add->ca_eab_kid? add->ca_eab_kid : base->ca_eab_kid;
nsc->ca_eab_hmac = add->ca_eab_hmac? add->ca_eab_hmac : base->ca_eab_hmac;
nsc->stapling = (add->stapling != DEF_VAL)? add->stapling : base->stapling;
nsc->staple_others = (add->staple_others != DEF_VAL)? add->staple_others : base->staple_others;
nsc->current = NULL;
return nsc;
}
void *md_config_merge_svr(apr_pool_t *pool, void *basev, void *addv)
{
return md_config_merge(pool, basev, addv);
}
static int inside_section(cmd_parms *cmd, const char *section) {
ap_directive_t *d;
for (d = cmd->directive->parent; d; d = d->parent) {
if (!ap_cstr_casecmp(d->directive, section)) {
return 1;
}
}
return 0;
}
static int inside_md_section(cmd_parms *cmd) {
return (inside_section(cmd, MD_CMD_MD_SECTION) || inside_section(cmd, MD_CMD_MD2_SECTION));
}
static const char *md_section_check(cmd_parms *cmd) {
if (!inside_md_section(cmd)) {
return apr_pstrcat(cmd->pool, cmd->cmd->name, " is only valid inside a '",
MD_CMD_MD_SECTION, "' context, not here", NULL);
}
return NULL;
}
#define MD_LOC_GLOBAL (0x01)
#define MD_LOC_MD (0x02)
#define MD_LOC_ELSE (0x04)
#define MD_LOC_ALL (0x07)
#define MD_LOC_NOT_MD (0x102)
static const char *md_conf_check_location(cmd_parms *cmd, int flags)
{
if (MD_LOC_GLOBAL == flags) {
return ap_check_cmd_context(cmd, GLOBAL_ONLY);
}
if (MD_LOC_NOT_MD == flags && inside_md_section(cmd)) {
return apr_pstrcat(cmd->pool, cmd->cmd->name, " is not allowed inside an '",
MD_CMD_MD_SECTION, "' context", NULL);
}
if (MD_LOC_MD == flags) {
return md_section_check(cmd);
}
else if ((MD_LOC_MD & flags) && inside_md_section(cmd)) {
return NULL;
}
return ap_check_cmd_context(cmd, NOT_IN_DIRECTORY|NOT_IN_LOCATION);
}
static const char *set_on_off(int *pvalue, const char *s, apr_pool_t *p)
{
if (!apr_strnatcasecmp("off", s)) {
*pvalue = 0;
}
else if (!apr_strnatcasecmp("on", s)) {
*pvalue = 1;
}
else {
return apr_pstrcat(p, "unknown '", s,
"', supported parameter values are 'on' and 'off'", NULL);
}
return NULL;
}
static void add_domain_name(apr_array_header_t *domains, const char *name, apr_pool_t *p)
{
if (md_array_str_index(domains, name, 0, 0) < 0) {
APR_ARRAY_PUSH(domains, char *) = md_util_str_tolower(apr_pstrdup(p, name));
}
}
static const char *set_transitive(int *ptransitive, const char *value)
{
if (!apr_strnatcasecmp("auto", value)) {
*ptransitive = 1;
return NULL;
}
else if (!apr_strnatcasecmp("manual", value)) {
*ptransitive = 0;
return NULL;
}
return "unknown value, use \"auto|manual\"";
}
static const char *md_config_sec_start(cmd_parms *cmd, void *mconfig, const char *arg)
{
md_srv_conf_t *sc;
md_srv_conf_t save;
const char *endp;
const char *err, *name;
apr_array_header_t *domains;
md_t *md;
int transitive = -1;
(void)mconfig;
if ((err = md_conf_check_location(cmd, MD_LOC_NOT_MD))) {
return err;
}
sc = md_config_get(cmd->server);
endp = ap_strrchr_c(arg, '>');
if (endp == NULL) {
return MD_CMD_MD_SECTION "> directive missing closing '>'";
}
arg = apr_pstrndup(cmd->pool, arg, (apr_size_t)(endp-arg));
if (!arg || !*arg) {
return MD_CMD_MD_SECTION " > section must specify a unique domain name";
}
name = ap_getword_conf(cmd->pool, &arg);
domains = apr_array_make(cmd->pool, 5, sizeof(const char *));
add_domain_name(domains, name, cmd->pool);
while (*arg != '\0') {
name = ap_getword_conf(cmd->pool, &arg);
if (NULL != set_transitive(&transitive, name)) {
add_domain_name(domains, name, cmd->pool);
}
}
if (domains->nelts == 0) {
return "needs at least one domain name";
}
md = md_create(cmd->pool, domains);
if (transitive >= 0) {
md->transitive = transitive;
}
/* Save the current settings in this srv_conf and apply+restore at the
* end of this section */
memcpy(&save, sc, sizeof(save));
srv_conf_props_clear(sc);
sc->current = md;
if (NULL == (err = ap_walk_config(cmd->directive->first_child, cmd, cmd->context))) {
srv_conf_props_apply(md, sc, cmd->pool);
APR_ARRAY_PUSH(sc->mc->mds, const md_t *) = md;
}
sc->current = NULL;
srv_conf_props_copy(sc, &save);
return err;
}
static const char *md_config_sec_add_members(cmd_parms *cmd, void *dc,
int argc, char *const argv[])
{
md_srv_conf_t *sc = md_config_get(cmd->server);
const char *err;
int i;
(void)dc;
if (NULL != (err = md_section_check(cmd))) {
if (argc == 1) {
/* only these values are allowed outside a section */
return set_transitive(&sc->transitive, argv[0]);
}
return err;
}
assert(sc->current);
for (i = 0; i < argc; ++i) {
if (NULL != set_transitive(&sc->transitive, argv[i])) {
add_domain_name(sc->current->domains, argv[i], cmd->pool);
}
}
return NULL;
}
static const char *md_config_set_names(cmd_parms *cmd, void *dc,
int argc, char *const argv[])
{
md_srv_conf_t *sc = md_config_get(cmd->server);
apr_array_header_t *domains = apr_array_make(cmd->pool, 5, sizeof(const char *));
const char *err;
md_t *md;
int i, transitive = -1;
(void)dc;
if ((err = md_conf_check_location(cmd, MD_LOC_NOT_MD))) {
return err;
}
for (i = 0; i < argc; ++i) {
if (NULL != set_transitive(&transitive, argv[i])) {
add_domain_name(domains, argv[i], cmd->pool);
}
}
if (domains->nelts == 0) {
return "needs at least one domain name";
}
md = md_create(cmd->pool, domains);
if (transitive >= 0) {
md->transitive = transitive;
}
if (cmd->config_file) {
md->defn_name = cmd->config_file->name;
md->defn_line_number = cmd->config_file->line_number;
}
APR_ARRAY_PUSH(sc->mc->mds, md_t *) = md;
return NULL;
}
static const char *md_config_set_ca(cmd_parms *cmd, void *dc,
int argc, char *const argv[])
{
md_srv_conf_t *sc = md_config_get(cmd->server);
const char *err, *url;
int i;
(void)dc;
if ((err = md_conf_check_location(cmd, MD_LOC_ALL))) {
return err;
}
if (!sc->ca_urls) {
sc->ca_urls = apr_array_make(cmd->pool, 3, sizeof(const char *));
}
else {
apr_array_clear(sc->ca_urls);
}
for (i = 0; i < argc; ++i) {
if (APR_SUCCESS != md_get_ca_url_from_name(&url, cmd->pool, argv[i])) {
return url;
}
APR_ARRAY_PUSH(sc->ca_urls, const char *) = url;
}
return NULL;
}
static const char *md_config_set_contact(cmd_parms *cmd, void *dc, const char *value)
{
md_srv_conf_t *sc = md_config_get(cmd->server);
const char *err;
(void)dc;
if ((err = md_conf_check_location(cmd, MD_LOC_ALL))) {
return err;
}
sc->ca_contact = value;
return NULL;
}
static const char *md_config_set_ca_proto(cmd_parms *cmd, void *dc, const char *value)
{
md_srv_conf_t *config = md_config_get(cmd->server);
const char *err;
(void)dc;
if ((err = md_conf_check_location(cmd, MD_LOC_ALL))) {
return err;
}
config->ca_proto = value;
return NULL;
}
static const char *md_config_set_agreement(cmd_parms *cmd, void *dc, const char *value)
{
md_srv_conf_t *config = md_config_get(cmd->server);
const char *err;
(void)dc;
if ((err = md_conf_check_location(cmd, MD_LOC_ALL))) {
return err;
}
config->ca_agreement = value;
return NULL;
}
static const char *md_config_set_renew_mode(cmd_parms *cmd, void *dc, const char *value)
{
md_srv_conf_t *config = md_config_get(cmd->server);
const char *err;
md_renew_mode_t renew_mode;
(void)dc;
if (!apr_strnatcasecmp("auto", value) || !apr_strnatcasecmp("automatic", value)) {
renew_mode = MD_RENEW_AUTO;
}
else if (!apr_strnatcasecmp("always", value)) {
renew_mode = MD_RENEW_ALWAYS;
}
else if (!apr_strnatcasecmp("manual", value) || !apr_strnatcasecmp("stick", value)) {
renew_mode = MD_RENEW_MANUAL;
}
else {
return apr_pstrcat(cmd->pool, "unknown MDDriveMode ", value, NULL);
}
if ((err = md_conf_check_location(cmd, MD_LOC_ALL))) {
return err;
}
config->renew_mode = renew_mode;
return NULL;
}
static const char *md_config_set_must_staple(cmd_parms *cmd, void *dc, const char *value)
{
md_srv_conf_t *config = md_config_get(cmd->server);
const char *err;
(void)dc;
if ((err = md_conf_check_location(cmd, MD_LOC_ALL))) {
return err;
}
return set_on_off(&config->must_staple, value, cmd->pool);
}
static const char *md_config_set_stapling(cmd_parms *cmd, void *dc, const char *value)
{
md_srv_conf_t *config = md_config_get(cmd->server);
const char *err;
(void)dc;
if ((err = md_conf_check_location(cmd, MD_LOC_ALL))) {
return err;
}
return set_on_off(&config->stapling, value, cmd->pool);
}
static const char *md_config_set_staple_others(cmd_parms *cmd, void *dc, const char *value)
{
md_srv_conf_t *config = md_config_get(cmd->server);
const char *err;
(void)dc;
if ((err = md_conf_check_location(cmd, MD_LOC_ALL))) {
return err;
}
return set_on_off(&config->staple_others, value, cmd->pool);
}
static const char *md_config_set_base_server(cmd_parms *cmd, void *dc, const char *value)
{
md_srv_conf_t *config = md_config_get(cmd->server);
const char *err = md_conf_check_location(cmd, MD_LOC_NOT_MD);
(void)dc;
if (err) return err;
return set_on_off(&config->mc->manage_base_server, value, cmd->pool);
}
static const char *md_config_set_min_delay(cmd_parms *cmd, void *dc, const char *value)
{
md_srv_conf_t *config = md_config_get(cmd->server);
const char *err = md_conf_check_location(cmd, MD_LOC_NOT_MD);
apr_time_t delay;
(void)dc;
if (err) return err;
if (md_duration_parse(&delay, value, "s") != APR_SUCCESS) {
return "unrecognized duration format";
}
config->mc->min_delay = delay;
return NULL;
}
static const char *md_config_set_retry_failover(cmd_parms *cmd, void *dc, const char *value)
{
md_srv_conf_t *config = md_config_get(cmd->server);
const char *err = md_conf_check_location(cmd, MD_LOC_NOT_MD);
int retry_failover;
(void)dc;
if (err) return err;
retry_failover = atoi(value);
if (retry_failover <= 0) {
return "invalid argument, must be a number > 0";
}
config->mc->retry_failover = retry_failover;
return NULL;
}
static const char *md_config_set_store_locks(cmd_parms *cmd, void *dc, const char *s)
{
md_srv_conf_t *config = md_config_get(cmd->server);
const char *err = md_conf_check_location(cmd, MD_LOC_NOT_MD);
int use_store_locks;
apr_time_t wait_time = 0;
(void)dc;
if (err) {
return err;
}
else if (!apr_strnatcasecmp("off", s)) {
use_store_locks = 0;
}
else if (!apr_strnatcasecmp("on", s)) {
use_store_locks = 1;
}
else {
if (md_duration_parse(&wait_time, s, "s") != APR_SUCCESS) {
return "neither 'on', 'off' or a duration specified";
}
use_store_locks = (wait_time != 0);
}
config->mc->use_store_locks = use_store_locks;
if (wait_time) {
config->mc->lock_wait_timeout = wait_time;
}
return NULL;
}
static const char *md_config_set_require_https(cmd_parms *cmd, void *dc, const char *value)
{
md_srv_conf_t *config = md_config_get(cmd->server);
const char *err;
if ((err = md_conf_check_location(cmd, MD_LOC_ALL))) {
return err;
}
(void)dc;
if (!apr_strnatcasecmp("off", value)) {
config->require_https = MD_REQUIRE_OFF;
}
else if (!apr_strnatcasecmp(MD_KEY_TEMPORARY, value)) {
config->require_https = MD_REQUIRE_TEMPORARY;
}
else if (!apr_strnatcasecmp(MD_KEY_PERMANENT, value)) {
config->require_https = MD_REQUIRE_PERMANENT;
}
else {
return apr_pstrcat(cmd->pool, "unknown '", value,
"', supported parameter values are 'temporary' and 'permanent'", NULL);
}
return NULL;
}
static const char *md_config_set_renew_window(cmd_parms *cmd, void *dc, const char *value)
{
md_srv_conf_t *config = md_config_get(cmd->server);
const char *err;
(void)dc;
if ((err = md_conf_check_location(cmd, MD_LOC_ALL))) {
return err;
}
err = md_timeslice_parse(&config->renew_window, cmd->pool, value, MD_TIME_LIFE_NORM);
if (!err && config->renew_window->norm
&& (config->renew_window->len >= config->renew_window->norm)) {
err = "a length of 100% or more is not allowed.";
}
if (err) return apr_psprintf(cmd->pool, "MDRenewWindow %s", err);
return NULL;
}
static const char *md_config_set_warn_window(cmd_parms *cmd, void *dc, const char *value)
{
md_srv_conf_t *config = md_config_get(cmd->server);
const char *err;
(void)dc;
if ((err = md_conf_check_location(cmd, MD_LOC_ALL))) {
return err;
}
err = md_timeslice_parse(&config->warn_window, cmd->pool, value, MD_TIME_LIFE_NORM);
if (!err && config->warn_window->norm
&& (config->warn_window->len >= config->warn_window->norm)) {
err = "a length of 100% or more is not allowed.";
}
if (err) return apr_psprintf(cmd->pool, "MDWarnWindow %s", err);
return NULL;
}
static const char *md_config_set_proxy(cmd_parms *cmd, void *arg, const char *value)
{
md_srv_conf_t *sc = md_config_get(cmd->server);
const char *err;
if ((err = md_conf_check_location(cmd, MD_LOC_NOT_MD))) {
return err;
}
md_util_abs_http_uri_check(cmd->pool, value, &err);
if (err) {
return err;
}
sc->mc->proxy_url = value;
(void)arg;
return NULL;
}
static const char *md_config_set_store_dir(cmd_parms *cmd, void *arg, const char *value)
{
md_srv_conf_t *sc = md_config_get(cmd->server);
const char *err;
if ((err = md_conf_check_location(cmd, MD_LOC_NOT_MD))) {
return err;
}
sc->mc->base_dir = value;
(void)arg;
return NULL;
}
static const char *set_port_map(md_mod_conf_t *mc, const char *value)
{
int net_port, local_port;
const char *endp;
if (!strncmp("http:", value, sizeof("http:") - 1)) {
net_port = 80; endp = value + sizeof("http") - 1;
}
else if (!strncmp("https:", value, sizeof("https:") - 1)) {
net_port = 443; endp = value + sizeof("https") - 1;
}
else {
net_port = (int)apr_strtoi64(value, (char**)&endp, 10);
if (errno) {
return "unable to parse first port number";
}
}
if (!endp || *endp != ':') {
return "no ':' after first port number";
}
++endp;
if (*endp == '-') {
local_port = 0;
}
else {
local_port = (int)apr_strtoi64(endp, (char**)&endp, 10);
if (errno) {
return "unable to parse second port number";
}
if (local_port <= 0 || local_port > 65535) {
return "invalid number for port map, must be in ]0,65535]";
}
}
switch (net_port) {
case 80:
mc->local_80 = local_port;
break;
case 443:
mc->local_443 = local_port;
break;
default:
return "mapped port number must be 80 or 443";
}
return NULL;
}
static const char *md_config_set_port_map(cmd_parms *cmd, void *arg,
const char *v1, const char *v2)
{
md_srv_conf_t *sc = md_config_get(cmd->server);
const char *err;
(void)arg;
if (!(err = md_conf_check_location(cmd, MD_LOC_NOT_MD))) {
err = set_port_map(sc->mc, v1);
}
if (!err && v2) {
err = set_port_map(sc->mc, v2);
}
return err;
}
static const char *md_config_set_cha_tyes(cmd_parms *cmd, void *dc,
int argc, char *const argv[])
{
md_srv_conf_t *config = md_config_get(cmd->server);
apr_array_header_t **pcha, *ca_challenges;
const char *err;
int i;
(void)dc;
if ((err = md_conf_check_location(cmd, MD_LOC_ALL))) {
return err;
}
pcha = &config->ca_challenges;
ca_challenges = *pcha;
if (ca_challenges) {
apr_array_clear(ca_challenges);
}
else {
*pcha = ca_challenges = apr_array_make(cmd->pool, 5, sizeof(const char *));
}
for (i = 0; i < argc; ++i) {
APR_ARRAY_PUSH(ca_challenges, const char *) = argv[i];
}
return NULL;
}
static const char *md_config_set_pkeys(cmd_parms *cmd, void *dc,
int argc, char *const argv[])
{
md_srv_conf_t *config = md_config_get(cmd->server);
const char *err, *ptype;
apr_int64_t bits;
int i;
(void)dc;
if ((err = md_conf_check_location(cmd, MD_LOC_ALL))) {
return err;
}
if (argc <= 0) {
return "needs to specify the private key type";
}
config->pks = md_pkeys_spec_make(cmd->pool);
for (i = 0; i < argc; ++i) {
ptype = argv[i];
if (!apr_strnatcasecmp("Default", ptype)) {
if (argc > 1) {
return "'Default' allows no other parameter";
}
md_pkeys_spec_add_default(config->pks);
}
else if (strlen(ptype) > 3
&& (ptype[0] == 'R' || ptype[0] == 'r')
&& (ptype[1] == 'S' || ptype[1] == 's')
&& (ptype[2] == 'A' || ptype[2] == 'a')
&& isdigit(ptype[3])) {
bits = (int)apr_atoi64(ptype+3);
if (bits < MD_PKEY_RSA_BITS_MIN) {
return apr_psprintf(cmd->pool,
"must be %d or higher in order to be considered safe.",
MD_PKEY_RSA_BITS_MIN);
}
if (bits >= INT_MAX) {
return apr_psprintf(cmd->pool, "is too large for an RSA key length.");
}
if (md_pkeys_spec_contains_rsa(config->pks)) {
return "two keys of type 'RSA' are not possible.";
}
md_pkeys_spec_add_rsa(config->pks, (unsigned int)bits);
}
else if (!apr_strnatcasecmp("RSA", ptype)) {
if (i+1 >= argc || !isdigit(argv[i+1][0])) {
bits = MD_PKEY_RSA_BITS_DEF;
}
else {
++i;
bits = (int)apr_atoi64(argv[i]);
if (bits < MD_PKEY_RSA_BITS_MIN) {
return apr_psprintf(cmd->pool,
"must be %d or higher in order to be considered safe.",
MD_PKEY_RSA_BITS_MIN);
}
if (bits >= INT_MAX) {
return apr_psprintf(cmd->pool, "is too large for an RSA key length.");
}
}
if (md_pkeys_spec_contains_rsa(config->pks)) {
return "two keys of type 'RSA' are not possible.";
}
md_pkeys_spec_add_rsa(config->pks, (unsigned int)bits);
}
else {
if (md_pkeys_spec_contains_ec(config->pks, argv[i])) {
return apr_psprintf(cmd->pool, "two keys of type '%s' are not possible.", argv[i]);
}
md_pkeys_spec_add_ec(config->pks, argv[i]);
}
}
return NULL;
}
static const char *md_config_set_notify_cmd(cmd_parms *cmd, void *mconfig, const char *arg)
{
md_srv_conf_t *sc = md_config_get(cmd->server);
const char *err;
if ((err = md_conf_check_location(cmd, MD_LOC_NOT_MD))) {
return err;
}
sc->mc->notify_cmd = arg;
(void)mconfig;
return NULL;
}
static const char *md_config_set_msg_cmd(cmd_parms *cmd, void *mconfig, const char *arg)
{
md_srv_conf_t *sc = md_config_get(cmd->server);
const char *err;
if ((err = md_conf_check_location(cmd, MD_LOC_NOT_MD))) {
return err;
}
sc->mc->message_cmd = arg;
(void)mconfig;
return NULL;
}
static const char *md_config_set_dns01_cmd(cmd_parms *cmd, void *mconfig, const char *arg)
{
md_srv_conf_t *sc = md_config_get(cmd->server);
const char *err;
if ((err = md_conf_check_location(cmd, MD_LOC_NOT_MD))) {
return err;
}
apr_table_set(sc->mc->env, MD_KEY_CMD_DNS01, arg);
(void)mconfig;
return NULL;
}
static const char *md_config_add_cert_file(cmd_parms *cmd, void *mconfig, const char *arg)
{
md_srv_conf_t *sc = md_config_get(cmd->server);
const char *err, *fpath;
(void)mconfig;
if ((err = md_conf_check_location(cmd, MD_LOC_MD))) return err;
assert(sc->current);
fpath = ap_server_root_relative(cmd->pool, arg);
if (!fpath) return apr_psprintf(cmd->pool, "certificate file not found: %s", arg);
if (!sc->current->cert_files) {
sc->current->cert_files = apr_array_make(cmd->pool, 3, sizeof(char*));
}
APR_ARRAY_PUSH(sc->current->cert_files, const char*) = fpath;
return NULL;
}
static const char *md_config_add_key_file(cmd_parms *cmd, void *mconfig, const char *arg)
{
md_srv_conf_t *sc = md_config_get(cmd->server);
const char *err, *fpath;
(void)mconfig;
if ((err = md_conf_check_location(cmd, MD_LOC_MD))) return err;
assert(sc->current);
fpath = ap_server_root_relative(cmd->pool, arg);
if (!fpath) return apr_psprintf(cmd->pool, "certificate key file not found: %s", arg);
if (!sc->current->pkey_files) {
sc->current->pkey_files = apr_array_make(cmd->pool, 3, sizeof(char*));
}
APR_ARRAY_PUSH(sc->current->pkey_files, const char*) = fpath;
return NULL;
}
static const char *md_config_set_server_status(cmd_parms *cmd, void *dc, const char *value)
{
md_srv_conf_t *sc = md_config_get(cmd->server);
const char *err;
(void)dc;
if ((err = md_conf_check_location(cmd, MD_LOC_ALL))) {
return err;
}
return set_on_off(&sc->mc->server_status_enabled, value, cmd->pool);
}
static const char *md_config_set_certificate_status(cmd_parms *cmd, void *dc, const char *value)
{
md_srv_conf_t *sc = md_config_get(cmd->server);
const char *err;
(void)dc;
if ((err = md_conf_check_location(cmd, MD_LOC_ALL))) {
return err;
}
return set_on_off(&sc->mc->certificate_status_enabled, value, cmd->pool);
}
static const char *md_config_set_ocsp_keep_window(cmd_parms *cmd, void *dc, const char *value)
{
md_srv_conf_t *sc = md_config_get(cmd->server);
const char *err;
(void)dc;
if ((err = md_conf_check_location(cmd, MD_LOC_ALL))) {
return err;
}
err = md_timeslice_parse(&sc->mc->ocsp_keep_window, cmd->pool, value, MD_TIME_OCSP_KEEP_NORM);
if (err) return apr_psprintf(cmd->pool, "MDStaplingKeepResponse %s", err);
return NULL;
}
static const char *md_config_set_ocsp_renew_window(cmd_parms *cmd, void *dc, const char *value)
{
md_srv_conf_t *sc = md_config_get(cmd->server);
const char *err;
(void)dc;
if ((err = md_conf_check_location(cmd, MD_LOC_ALL))) {
return err;
}
err = md_timeslice_parse(&sc->mc->ocsp_renew_window, cmd->pool, value, MD_TIME_LIFE_NORM);
if (!err && sc->mc->ocsp_renew_window->norm
&& (sc->mc->ocsp_renew_window->len >= sc->mc->ocsp_renew_window->norm)) {
err = "with a length of 100% or more is not allowed.";
}
if (err) return apr_psprintf(cmd->pool, "MDStaplingRenewWindow %s", err);
return NULL;
}
static const char *md_config_set_cert_check(cmd_parms *cmd, void *dc,
const char *name, const char *url)
{
md_srv_conf_t *sc = md_config_get(cmd->server);
const char *err;
(void)dc;
if ((err = md_conf_check_location(cmd, MD_LOC_ALL))) {
return err;
}
sc->mc->cert_check_name = name;
sc->mc->cert_check_url = url;
return NULL;
}
static const char *md_config_set_activation_delay(cmd_parms *cmd, void *mconfig, const char *arg)
{
md_srv_conf_t *sc = md_config_get(cmd->server);
const char *err;
apr_interval_time_t delay;
(void)mconfig;
if ((err = md_conf_check_location(cmd, MD_LOC_NOT_MD))) {
return err;
}
if (md_duration_parse(&delay, arg, "d") != APR_SUCCESS) {
return "unrecognized duration format";
}
apr_table_set(sc->mc->env, MD_KEY_ACTIVATION_DELAY, md_duration_format(cmd->pool, delay));
return NULL;
}
static const char *md_config_set_ca_certs(cmd_parms *cmd, void *dc, const char *path)
{
md_srv_conf_t *sc = md_config_get(cmd->server);
(void)dc;
sc->mc->ca_certs = path;
return NULL;
}
static const char *md_config_set_eab(cmd_parms *cmd, void *dc,
const char *keyid, const char *hmac)
{
md_srv_conf_t *sc = md_config_get(cmd->server);
const char *err;
(void)dc;
if ((err = md_conf_check_location(cmd, MD_LOC_ALL))) {
return err;
}
if (!hmac) {
if (!apr_strnatcasecmp("None", keyid)) {
keyid = "none";
}
else {
/* a JSON file keeping keyid and hmac */
const char *fpath;
apr_status_t rv;
md_json_t *json;
/* If only dumping the config, don't verify the file */
if (ap_state_query(AP_SQ_RUN_MODE) == AP_SQ_RM_CONFIG_DUMP) {
goto leave;
}
fpath = ap_server_root_relative(cmd->pool, keyid);
if (!fpath) {
return apr_pstrcat(cmd->pool, cmd->cmd->name,
": Invalid file path ", keyid, NULL);
}
if (!md_file_exists(fpath, cmd->pool)) {
return apr_pstrcat(cmd->pool, cmd->cmd->name,
": file not found: ", fpath, NULL);
}
rv = md_json_readf(&json, cmd->pool, fpath);
if (APR_SUCCESS != rv) {
return apr_pstrcat(cmd->pool, cmd->cmd->name,
": error reading JSON file ", fpath, NULL);
}
keyid = md_json_gets(json, MD_KEY_KID, NULL);
if (!keyid || !*keyid) {
return apr_pstrcat(cmd->pool, cmd->cmd->name,
": JSON does not contain '", MD_KEY_KID,
"' element in file ", fpath, NULL);
}
hmac = md_json_gets(json, MD_KEY_HMAC, NULL);
if (!hmac || !*hmac) {
return apr_pstrcat(cmd->pool, cmd->cmd->name,
": JSON does not contain '", MD_KEY_HMAC,
"' element in file ", fpath, NULL);
}
}
}
leave:
sc->ca_eab_kid = keyid;
sc->ca_eab_hmac = hmac;
return NULL;
}
const command_rec md_cmds[] = {
AP_INIT_TAKE_ARGV("MDCertificateAuthority", md_config_set_ca, NULL, RSRC_CONF,
"URL(s) or known name(s) of CA issuing the certificates"),
AP_INIT_TAKE1("MDCertificateAgreement", md_config_set_agreement, NULL, RSRC_CONF,
"either 'accepted' or the URL of CA Terms-of-Service agreement you accept"),
AP_INIT_TAKE_ARGV("MDCAChallenges", md_config_set_cha_tyes, NULL, RSRC_CONF,
"A list of challenge types to be used."),
AP_INIT_TAKE1("MDCertificateProtocol", md_config_set_ca_proto, NULL, RSRC_CONF,
"Protocol used to obtain/renew certificates"),
AP_INIT_TAKE1("MDContactEmail", md_config_set_contact, NULL, RSRC_CONF,
"Email address used for account registration"),
AP_INIT_TAKE1("MDDriveMode", md_config_set_renew_mode, NULL, RSRC_CONF,
"deprecated, older name for MDRenewMode"),
AP_INIT_TAKE1("MDRenewMode", md_config_set_renew_mode, NULL, RSRC_CONF,
"Controls how renewal of Managed Domain certificates shall be handled."),
AP_INIT_TAKE_ARGV("MDomain", md_config_set_names, NULL, RSRC_CONF,
"A group of server names with one certificate"),
AP_INIT_RAW_ARGS(MD_CMD_MD_SECTION, md_config_sec_start, NULL, RSRC_CONF,
"Container for a managed domain with common settings and certificate."),
AP_INIT_RAW_ARGS(MD_CMD_MD2_SECTION, md_config_sec_start, NULL, RSRC_CONF,
"Short form for <MDomainSet> container."),
AP_INIT_TAKE_ARGV("MDMember", md_config_sec_add_members, NULL, RSRC_CONF,
"Define domain name(s) part of the Managed Domain. Use 'auto' or "
"'manual' to enable/disable auto adding names from virtual hosts."),
AP_INIT_TAKE_ARGV("MDMembers", md_config_sec_add_members, NULL, RSRC_CONF,
"Define domain name(s) part of the Managed Domain. Use 'auto' or "
"'manual' to enable/disable auto adding names from virtual hosts."),
AP_INIT_TAKE1("MDMustStaple", md_config_set_must_staple, NULL, RSRC_CONF,
"Enable/Disable the Must-Staple flag for new certificates."),
AP_INIT_TAKE12("MDPortMap", md_config_set_port_map, NULL, RSRC_CONF,
"Declare the mapped ports 80 and 443 on the local server. E.g. 80:8000 "
"to indicate that the server port 8000 is reachable as port 80 from the "
"internet. Use 80:- to indicate that port 80 is not reachable from "
"the outside."),
AP_INIT_TAKE_ARGV("MDPrivateKeys", md_config_set_pkeys, NULL, RSRC_CONF,
"set the type and parameters for private key generation"),
AP_INIT_TAKE1("MDHttpProxy", md_config_set_proxy, NULL, RSRC_CONF,
"URL of a HTTP(S) proxy to use for outgoing connections"),
AP_INIT_TAKE1("MDStoreDir", md_config_set_store_dir, NULL, RSRC_CONF,
"the directory for file system storage of managed domain data."),
AP_INIT_TAKE1("MDRenewWindow", md_config_set_renew_window, NULL, RSRC_CONF,
"Time length for renewal before certificate expires (defaults to days)."),
AP_INIT_TAKE1("MDRequireHttps", md_config_set_require_https, NULL, RSRC_CONF|OR_AUTHCFG,
"Redirect non-secure requests to the https: equivalent."),
AP_INIT_RAW_ARGS("MDNotifyCmd", md_config_set_notify_cmd, NULL, RSRC_CONF,
"Set the command to run when signup/renew of domain is complete."),
AP_INIT_TAKE1("MDBaseServer", md_config_set_base_server, NULL, RSRC_CONF,
"Allow managing of base server outside virtual hosts."),
AP_INIT_RAW_ARGS("MDChallengeDns01", md_config_set_dns01_cmd, NULL, RSRC_CONF,
"Set the command for setup/teardown of dns-01 challenges"),
AP_INIT_TAKE1("MDCertificateFile", md_config_add_cert_file, NULL, RSRC_CONF,
"set the static certificate (chain) file to use for this domain."),
AP_INIT_TAKE1("MDCertificateKeyFile", md_config_add_key_file, NULL, RSRC_CONF,
"set the static private key file to use for this domain."),
AP_INIT_TAKE1("MDServerStatus", md_config_set_server_status, NULL, RSRC_CONF,
"On to see Managed Domains in server-status."),
AP_INIT_TAKE1("MDCertificateStatus", md_config_set_certificate_status, NULL, RSRC_CONF,
"On to see Managed Domain expose /.httpd/certificate-status."),
AP_INIT_TAKE1("MDWarnWindow", md_config_set_warn_window, NULL, RSRC_CONF,
"When less time remains for a certificate, send our/log a warning (defaults to days)"),
AP_INIT_RAW_ARGS("MDMessageCmd", md_config_set_msg_cmd, NULL, RSRC_CONF,
"Set the command run when a message about a domain is issued."),
AP_INIT_TAKE1("MDStapling", md_config_set_stapling, NULL, RSRC_CONF,
"Enable/Disable OCSP Stapling for this/all Managed Domain(s)."),
AP_INIT_TAKE1("MDStapleOthers", md_config_set_staple_others, NULL, RSRC_CONF,
"Enable/Disable OCSP Stapling for certificates not in Managed Domains."),
AP_INIT_TAKE1("MDStaplingKeepResponse", md_config_set_ocsp_keep_window, NULL, RSRC_CONF,
"The amount of time to keep an OCSP response in the store."),
AP_INIT_TAKE1("MDStaplingRenewWindow", md_config_set_ocsp_renew_window, NULL, RSRC_CONF,
"Time length for renewal before OCSP responses expire (defaults to days)."),
AP_INIT_TAKE2("MDCertificateCheck", md_config_set_cert_check, NULL, RSRC_CONF,
"Set name and URL pattern for a certificate monitoring site."),
AP_INIT_TAKE1("MDActivationDelay", md_config_set_activation_delay, NULL, RSRC_CONF,
"How long to delay activation of new certificates"),
AP_INIT_TAKE1("MDCACertificateFile", md_config_set_ca_certs, NULL, RSRC_CONF,
"Set the CA file to use for connections"),
AP_INIT_TAKE12("MDExternalAccountBinding", md_config_set_eab, NULL, RSRC_CONF,
"Set the external account binding keyid and hmac values to use at CA"),
AP_INIT_TAKE1("MDRetryDelay", md_config_set_min_delay, NULL, RSRC_CONF,
"Time length for first retry, doubled on every consecutive error."),
AP_INIT_TAKE1("MDRetryFailover", md_config_set_retry_failover, NULL, RSRC_CONF,
"The number of errors before a failover to another CA is triggered."),
AP_INIT_TAKE1("MDStoreLocks", md_config_set_store_locks, NULL, RSRC_CONF,
"Configure locking of store for updates."),
AP_INIT_TAKE1(NULL, NULL, NULL, RSRC_CONF, NULL)
};
apr_status_t md_config_post_config(server_rec *s, apr_pool_t *p)
{
md_srv_conf_t *sc;
md_mod_conf_t *mc;
sc = md_config_get(s);
mc = sc->mc;
mc->hsts_header = NULL;
if (mc->hsts_max_age > 0) {
mc->hsts_header = apr_psprintf(p, "max-age=%d", mc->hsts_max_age);
}
#if AP_MODULE_MAGIC_AT_LEAST(20180906, 2)
if (mc->base_dir == NULL) {
mc->base_dir = ap_state_dir_relative(p, MD_DEFAULT_BASE_DIR);
}
#endif
return APR_SUCCESS;
}
static md_srv_conf_t *config_get_int(server_rec *s, apr_pool_t *p)
{
md_srv_conf_t *sc = (md_srv_conf_t *)ap_get_module_config(s->module_config, &md_module);
ap_assert(sc);
if (sc->s != s && p) {
sc = md_config_merge(p, &defconf, sc);
sc->s = s;
sc->name = apr_pstrcat(p, CONF_S_NAME(s), sc->name, NULL);
sc->mc = md_mod_conf_get(p, 1);
ap_set_module_config(s->module_config, &md_module, sc);
}
return sc;
}
md_srv_conf_t *md_config_get(server_rec *s)
{
return config_get_int(s, NULL);
}
md_srv_conf_t *md_config_get_unique(server_rec *s, apr_pool_t *p)
{
assert(p);
return config_get_int(s, p);
}
md_srv_conf_t *md_config_cget(conn_rec *c)
{
return md_config_get(c->base_server);
}
const char *md_config_gets(const md_srv_conf_t *sc, md_config_var_t var)
{
switch (var) {
case MD_CONFIG_CA_CONTACT:
return sc->ca_contact? sc->ca_contact : defconf.ca_contact;
case MD_CONFIG_CA_PROTO:
return sc->ca_proto? sc->ca_proto : defconf.ca_proto;
case MD_CONFIG_BASE_DIR:
return sc->mc->base_dir;
case MD_CONFIG_PROXY:
return sc->mc->proxy_url;
case MD_CONFIG_CA_AGREEMENT:
return sc->ca_agreement? sc->ca_agreement : defconf.ca_agreement;
case MD_CONFIG_NOTIFY_CMD:
return sc->mc->notify_cmd;
default:
return NULL;
}
}
int md_config_geti(const md_srv_conf_t *sc, md_config_var_t var)
{
switch (var) {
case MD_CONFIG_DRIVE_MODE:
return (sc->renew_mode != DEF_VAL)? sc->renew_mode : defconf.renew_mode;
case MD_CONFIG_TRANSITIVE:
return (sc->transitive != DEF_VAL)? sc->transitive : defconf.transitive;
case MD_CONFIG_REQUIRE_HTTPS:
return (sc->require_https != MD_REQUIRE_UNSET)? sc->require_https : defconf.require_https;
case MD_CONFIG_MUST_STAPLE:
return (sc->must_staple != DEF_VAL)? sc->must_staple : defconf.must_staple;
case MD_CONFIG_STAPLING:
return (sc->stapling != DEF_VAL)? sc->stapling : defconf.stapling;
case MD_CONFIG_STAPLE_OTHERS:
return (sc->staple_others != DEF_VAL)? sc->staple_others : defconf.staple_others;
default:
return 0;
}
}
void md_config_get_timespan(md_timeslice_t **pspan, const md_srv_conf_t *sc, md_config_var_t var)
{
switch (var) {
case MD_CONFIG_RENEW_WINDOW:
*pspan = sc->renew_window? sc->renew_window : defconf.renew_window;
break;
case MD_CONFIG_WARN_WINDOW:
*pspan = sc->warn_window? sc->warn_window : defconf.warn_window;
break;
default:
break;
}
}
const md_t *md_get_for_domain(server_rec *s, const char *domain)
{
md_srv_conf_t *sc;
const md_t *md;
int i;
sc = md_config_get(s);
for (i = 0; sc && sc->assigned && i < sc->assigned->nelts; ++i) {
md = APR_ARRAY_IDX(sc->assigned, i, const md_t*);
if (md_contains(md, domain, 0)) goto leave;
}
md = NULL;
leave:
return md;
}