static authz_status dbdgroup_check_authorization(request_rec *r,
const char *require_args,
const void *parsed_require_args)
{
int i, rv;
const char *w;
apr_array_header_t *groups = NULL;
const char *err = NULL;
const ap_expr_info_t *expr = parsed_require_args;
const char *require;
const char *t;
authz_dbd_cfg *cfg = ap_get_module_config(r->per_dir_config,
&authz_dbd_module);
if (!r->user) {
return AUTHZ_DENIED_NO_USER;
}
if (groups == NULL) {
groups = apr_array_make(r->pool, 4, sizeof(const char*));
rv = authz_dbd_group_query(r, cfg, groups);
if (rv != OK) {
return AUTHZ_GENERAL_ERROR;
}
}
require = ap_expr_str_exec(r, expr, &err);
if (err) {
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(02590)
"authz_dbd authorize: require dbd-group: Can't "
"evaluate require expression: %s", err);
return AUTHZ_DENIED;
}
t = require;
while (t[0]) {
w = ap_getword_white(r->pool, &t);
for (i=0; i < groups->nelts; ++i) {
if (!strcmp(w, ((const char**)groups->elts)[i])) {
return AUTHZ_GRANTED;
}
}
}
return AUTHZ_DENIED;
}
static authz_status host_check_authorization(request_rec *r,
const char *require_line,
const void *parsed_require_line)
{
const char *t, *w;
const char *remotehost = NULL;
int remotehost_is_ip;
remotehost = ap_get_useragent_host(r, REMOTE_DOUBLE_REV, &remotehost_is_ip);
if ((remotehost == NULL) || remotehost_is_ip) {
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(01753)
"access check of '%s' to %s failed, reason: unable to get the "
"remote host name", require_line, r->uri);
}
else {
const char *err = NULL;
const ap_expr_info_t *expr = parsed_require_line;
const char *require;
require = ap_expr_str_exec(r, expr, &err);
if (err) {
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(02593)
"authz_host authorize: require host: Can't "
"evaluate require expression: %s", err);
return AUTHZ_DENIED;
}
/* The 'host' provider will allow the configuration to specify a list of
host names to check rather than a single name. This is different
from the previous host based syntax. */
t = require;
while ((w = ap_getword_conf(r->pool, &t)) && w[0]) {
if (in_domain(w, remotehost)) {
return AUTHZ_GRANTED;
}
}
}
/* authz_core will log the require line and the result at DEBUG */
return AUTHZ_DENIED;
}
static int evaluate_query_parameters(request_rec *r,
const apr_array_header_t *parsed_require_args,
const void **query_parameters)
{
int i;
apr_array_header_t *qp;
const ap_expr_info_t *expr = NULL;
const char *parameter;
const char *err = NULL;
/* evaluate the query parameters in parsed_require_args */
qp = apr_array_make(r->pool,
parsed_require_args->nelts,
sizeof (char *));
for (i = 0; i < parsed_require_args->nelts; i++) {
expr = ((const ap_expr_info_t **)parsed_require_args->elts)[i];
parameter = ap_expr_str_exec(r, expr, &err);
if (err) {
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO()
"authz_dbd in evaluate query_parameters: Can't "
"evaluate require expression: %s", err);
return HTTP_INTERNAL_SERVER_ERROR;
}
*(const char **)apr_array_push(qp) = parameter;
}
*query_parameters = (void *)qp;
return OK;
}
static authz_status
forward_dns_check_authorization(request_rec *r,
const char *require_line,
const void *parsed_require_line)
{
const char *err = NULL;
const ap_expr_info_t *expr = parsed_require_line;
const char *require, *t;
char *w;
/* the require line is an expression, which is evaluated now. */
require = ap_expr_str_exec(r, expr, &err);
if (err) {
ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, APLOGNO(03354)
"authz_host authorize: require forward-dns: "
"Can't evaluate require expression: %s", err);
return AUTHZ_DENIED;
}
/* tokenize expected list of names */
t = require;
while ((w = ap_getword_conf(r->pool, &t)) && w[0]) {
apr_sockaddr_t *sa;
apr_status_t rv;
char *hash_ptr;
/* stop on apache configuration file comments */
if ((hash_ptr = ap_strchr(w, '#'))) {
if (hash_ptr == w) {
break;
}
*hash_ptr = '\0';
}
/* does the client ip match one of the names? */
rv = apr_sockaddr_info_get(&sa, w, APR_UNSPEC, 0, 0, r->pool);
if (rv == APR_SUCCESS) {
while (sa) {
int match = apr_sockaddr_equal(sa, r->useragent_addr);
ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, APLOGNO(03355)
"access check for %s as '%s': %s",
r->useragent_ip, w, match? "yes": "no");
if (match) {
return AUTHZ_GRANTED;
}
sa = sa->next;
}
}
else {
ap_log_rerror(APLOG_MARK, APLOG_WARNING, 0, r, APLOGNO(03356)
"No sockaddr info for \"%s\"", w);
}
/* stop processing, we are in a comment */
if (hash_ptr) {
break;
}
}
return AUTHZ_DENIED;
}
