--- /dev/null
+scripts.mit.edu repository
+Copyright (C) 2006 Jeff Arnold and Joe Presbrey,
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+ Version 2, June 1991
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+Public License instead of this License.
--- /dev/null
+/* mod_auth_sslcert
+ * version 1.1.1, released 2007-10-01
+ * Anders Kaseorg <andersk@mit.edu>
+ *
+ * This module does authentication based on SSL client certificates:
+ * AuthType SSLCert
+ * AuthSSLCertVar SSL_CLIENT_S_DN_Email
+ * AuthSSLCertStripSuffix "@MIT.EDU"
+ */
+
+#include "apr_strings.h"
+#define APR_WANT_STRFUNC /* for strcasecmp */
+#include "apr_want.h"
+
+#include "ap_config.h"
+#include "httpd.h"
+#include "http_config.h"
+#include "http_core.h"
+#include "http_log.h"
+#include "http_request.h"
+
+#include "mod_auth.h"
+#include "mod_ssl.h"
+
+static APR_OPTIONAL_FN_TYPE(ssl_var_lookup) *ssl_var_lookup;
+
+typedef struct {
+ int authoritative;
+ char *var;
+ char *strip_suffix;
+ int strip_suffix_required;
+} auth_sslcert_config_rec;
+
+static void *create_auth_sslcert_dir_config(apr_pool_t *p, char *dirspec)
+{
+ auth_sslcert_config_rec *conf = apr_pcalloc(p, sizeof(*conf));
+
+ conf->authoritative = -1;
+ conf->var = NULL;
+ conf->strip_suffix = NULL;
+ conf->strip_suffix_required = -1;
+
+ return conf;
+}
+
+static void *merge_auth_sslcert_dir_config(apr_pool_t *p, void *parent_conf, void *newloc_conf)
+{
+ auth_sslcert_config_rec *pconf = parent_conf, *nconf = newloc_conf,
+ *conf = apr_pcalloc(p, sizeof(*conf));
+
+ conf->authoritative = (nconf->authoritative != -1) ?
+ nconf->authoritative : pconf->authoritative;
+ conf->var = (nconf->var != NULL) ?
+ nconf->var : pconf->var;
+ conf->strip_suffix = (nconf->var != NULL || nconf->strip_suffix != NULL) ?
+ nconf->strip_suffix : pconf->strip_suffix;
+ conf->strip_suffix_required = (nconf->var != NULL || nconf->strip_suffix_required != -1) ?
+ nconf->authoritative : pconf->authoritative;
+
+ return conf;
+}
+
+static const command_rec auth_sslcert_cmds[] =
+{
+ AP_INIT_FLAG("AuthSSLCertAuthoritative", ap_set_flag_slot,
+ (void *)APR_OFFSETOF(auth_sslcert_config_rec, authoritative),
+ OR_AUTHCFG,
+ "Set to 'Off' to allow access control to be passed along to "
+ "lower modules if the UserID is not known to this module"),
+ AP_INIT_TAKE1("AuthSSLCertVar", ap_set_string_slot,
+ (void*)APR_OFFSETOF(auth_sslcert_config_rec, var),
+ OR_AUTHCFG,
+ "SSL variable to use as the username"),
+ AP_INIT_TAKE1("AuthSSLCertStripSuffix", ap_set_string_slot,
+ (void*)APR_OFFSETOF(auth_sslcert_config_rec, strip_suffix),
+ OR_AUTHCFG,
+ "An optional suffix to strip from the username"),
+ AP_INIT_FLAG("AuthSSLCertStripSuffixRequired", ap_set_flag_slot,
+ (void *)APR_OFFSETOF(auth_sslcert_config_rec, strip_suffix_required),
+ OR_AUTHCFG,
+ "Set to 'Off' to allow certs that don't end with a recognized "
+ "suffix to still authenticate"),
+ {NULL}
+};
+
+module AP_MODULE_DECLARE_DATA auth_sslcert_module;
+
+static int authenticate_sslcert_user(request_rec *r)
+{
+ auth_sslcert_config_rec *conf = ap_get_module_config(r->per_dir_config,
+ &auth_sslcert_module);
+ const char *current_auth;
+
+ /* Are we configured to be SSLCert auth? */
+ current_auth = ap_auth_type(r);
+ if (!current_auth || strcasecmp(current_auth, "SSLCert") != 0) {
+ return DECLINED;
+ }
+
+ r->ap_auth_type = "SSLCert";
+
+ if (strcasecmp((char *)ssl_var_lookup(r->pool, r->server, r->connection, r,
+ "SSL_CLIENT_VERIFY"),
+ "SUCCESS") == 0) {
+ if (conf->var == NULL) {
+ ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
+ "AuthSSLCertVar is not set: \"%s\"", r->uri);
+ return HTTP_INTERNAL_SERVER_ERROR;
+ }
+ char *user = (char *)ssl_var_lookup(r->pool, r->server, r->connection, r,
+ conf->var);
+ if (user != NULL && user[0] != '\0') {
+ if (conf->strip_suffix != NULL) {
+ int i = strlen(user) - strlen(conf->strip_suffix);
+ if (i >= 0 && strcasecmp(user + i, conf->strip_suffix) == 0) {
+ r->user = apr_pstrmemdup(r->pool, user, i);
+ return OK;
+ } else if (!conf->strip_suffix_required) {
+ r->user = user;
+ return OK;
+ } else {
+ ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
+ "SSL username for \"%s\" has wrong suffix: \"%s\"",
+ r->uri, user);
+ }
+ } else {
+ r->user = user;
+ return OK;
+ }
+ } else {
+ ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
+ "no SSL username for \"%s\"", r->uri);
+ }
+ } else if (conf->authoritative) {
+ ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
+ "SSL client not verified for \"%s\"", r->uri);
+ }
+
+ /* If we're not authoritative, then any error is ignored. */
+ if (!conf->authoritative) {
+ return DECLINED;
+ }
+
+ ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
+ "SSLCert authentication failure for \"%s\"",
+ r->uri);
+ return HTTP_UNAUTHORIZED;
+}
+
+static void import_ssl_var_lookup()
+{
+ ssl_var_lookup = APR_RETRIEVE_OPTIONAL_FN(ssl_var_lookup);
+}
+
+static void register_hooks(apr_pool_t *p)
+{
+ ap_hook_check_user_id(authenticate_sslcert_user, NULL, NULL, APR_HOOK_MIDDLE);
+ ap_hook_optional_fn_retrieve(import_ssl_var_lookup, NULL, NULL, APR_HOOK_MIDDLE);
+}
+
+module AP_MODULE_DECLARE_DATA auth_sslcert_module =
+{
+ STANDARD20_MODULE_STUFF,
+ create_auth_sslcert_dir_config, /* dir config creater */
+ merge_auth_sslcert_dir_config, /* dir merger */
+ NULL, /* server config */
+ NULL, /* merge server config */
+ auth_sslcert_cmds, /* command apr_table_t */
+ register_hooks /* register hooks */
+};
projects / invirt/packages/libapache2-mod-auth-sslcert.git / commitdiff
