static const char* g_UserDataKey = "_shib_check_user_";
}
+/* Apache 2.2.x headers must be accumulated and set in the output filter.
+ Apache 2.0.49+ supports the filter method.
+ Apache 1.3.x and lesser 2.0.x must write the headers directly. */
+
+#if (defined(SHIB_APACHE_20) || defined(SHIB_APACHE_22)) && AP_MODULE_MAGIC_AT_LEAST(20020903,6)
+#define SHIB_DEFERRED_HEADERS
+#endif
+
/********************************************************************************/
// Basic Apache Configuration code.
//
int bBasicHijack; // activate for AuthType Basic?
int bRequireSession; // require a session?
int bExportAssertion; // export SAML assertion to the environment?
+ int bUseEnvVars; // use environment instead of headers?
};
// creates per-directory config structure
dc->szAuthGrpFile = NULL;
dc->szApplicationId = NULL;
dc->szRequireWith = NULL;
+ dc->bUseEnvVars = -1;
return dc;
}
dc->bRequireSession=((child->bRequireSession==-1) ? parent->bRequireSession : child->bRequireSession);
dc->bExportAssertion=((child->bExportAssertion==-1) ? parent->bExportAssertion : child->bExportAssertion);
dc->bRequireAll=((child->bRequireAll==-1) ? parent->bRequireAll : child->bRequireAll);
+ dc->bUseEnvVars=((child->bUseEnvVars==-1) ? parent->bUseEnvVars : child->bUseEnvVars);
return dc;
}
+// per-request module structure
+struct shib_request_config
+{
+ SH_AP_TABLE *env; // environment vars
+#ifdef SHIB_DEFERRED_HEADERS
+ SH_AP_TABLE *hdr_out; // headers to browser
+ SH_AP_TABLE *hdr_err; // err headers to browser
+#endif
+};
+
+// create a request record
+static shib_request_config *init_request_config(request_rec *r)
+{
+ shib_request_config* rc=(shib_request_config*)ap_pcalloc(r->pool,sizeof(shib_request_config));
+ ap_set_module_config (r->request_config, &mod_shib, rc);
+ memset(rc, 0, sizeof(shib_request_config));
+ ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r), "shib_init_rc\n");
+ return rc;
+}
+
// generic global slot handlers
extern "C" const char* ap_set_global_string_slot(cmd_parms* parms, void*, const char* arg)
{
request_rec* m_req;
shib_dir_config* m_dc;
shib_server_config* m_sc;
+ shib_request_config* m_rc;
ShibTargetApache(request_rec* req) : m_gotBody(false) {
m_sc = (shib_server_config*)ap_get_module_config(req->server->module_config, &mod_shib);
m_dc = (shib_dir_config*)ap_get_module_config(req->per_dir_config, &mod_shib);
+ m_rc = (shib_request_config*)ap_get_module_config(req->request_config, &mod_shib);
init(
m_sc->szScheme ? m_sc->szScheme : ap_http_method(req),
}
virtual void setCookie(const string &name, const string &value) {
char* val = ap_psprintf(m_req->pool, "%s=%s", name.c_str(), value.c_str());
+#ifdef SHIB_DEFERRED_HEADERS
+ ap_table_addn(m_rc->hdr_err, "Set-Cookie", val);
+#else
ap_table_addn(m_req->err_headers_out, "Set-Cookie", val);
+#endif
}
virtual const char* getQueryString() const { return m_req->args; }
virtual const char* getRequestBody() const {
return m_body.c_str();
}
virtual void clearHeader(const string &name) {
- ap_table_unset(m_req->headers_in, name.c_str());
- ap_table_set(m_req->headers_in, name.c_str(), g_unsetHeaderValue.c_str());
+ if (m_dc->bUseEnvVars!=0) {
+ // ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(m_req), "shib_clear_header: env\n");
+ if (m_rc && m_rc->env) ap_table_unset(m_rc->env, name.c_str());
+ } else {
+ // ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(m_req), "shib_clear_header: hdr\n");
+ ap_table_unset(m_req->headers_in, name.c_str());
+ ap_table_set(m_req->headers_in, name.c_str(), g_unsetHeaderValue.c_str());
+ }
}
virtual void setHeader(const string &name, const string &value) {
- ap_table_set(m_req->headers_in, name.c_str(), value.c_str());
+ if (m_dc->bUseEnvVars!=0) {
+ if (!m_rc) {
+ // this happens on subrequests
+ // ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(m_req), "shib_setheader: no_m_rc\n");
+ m_rc = init_request_config(m_req);
+ }
+ if (!m_rc->env) m_rc->env = ap_make_table(m_req->pool, 10);
+ // ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(m_req), "shib_set_env: %s=%s\n", name.c_str(), value.c_str()?value.c_str():"Null");
+ ap_table_set(m_rc->env, name.c_str(), value.c_str()?value.c_str():"");
+ } else {
+ // ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(m_req), "shib_set_hdr: %s=%s\n", name.c_str(), value.c_str()?value.c_str():"Null");
+ ap_table_set(m_req->headers_in, name.c_str(), value.c_str());
+ }
}
virtual string getHeader(const string &name) {
- const char *hdr = ap_table_get(m_req->headers_in, name.c_str());
+ const char *hdr;
+ if (m_dc->bUseEnvVars!=0) {
+ if (m_rc && m_rc->env) hdr = ap_table_get(m_rc->env, name.c_str());
+ else hdr = NULL;
+ // ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(m_req), "shib_get_hdr_env: %s=%s\n", name.c_str(), hdr?hdr:"NULL");
+ } else {
+ hdr = ap_table_get(m_req->headers_in, name.c_str());
+ // ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(m_req), "shib_get_hdr: %s=%s\n", name.c_str(), hdr?hdr:"NULL");
+ }
return string(hdr ? hdr : "");
}
virtual void setRemoteUser(const string &user) {
// Check user authentication and export information, then set the handler bypass
pair<bool,void*> res = sta.doCheckAuthN(true);
apr_pool_userdata_setn((const void*)42,g_UserDataKey,NULL,r->pool);
- if (res.first) return (int)res.second;
+ if (res.first) return (int)(long)res.second;
// user auth was okay -- export the assertions now
res = sta.doExportAssertions();
- if (res.first) return (int)res.second;
+ if (res.first) return (int)(long)res.second;
// export happened successfully.. this user is ok.
return OK;
ShibTargetApache sta(r);
pair<bool,void*> res = sta.doHandler();
- if (res.first) return (int)res.second;
+ if (res.first) return (int)(long)res.second;
ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, SH_AP_R(r), "doHandler() did not do anything.");
return SERVER_ERROR;
ShibTargetApache sta(r);
pair<bool,void*> res = sta.doCheckAuthZ();
- if (res.first) return (int)res.second;
+ if (res.first) return (int)(long)res.second;
// We're all okay.
return OK;
if (!strcmp(wrapper->getHeader(),"REMOTE_USER"))
vals=remote_user.c_str();
else
- vals=ap_table_get(sta->m_req->headers_in,wrapper->getHeader());
+ if (sta->m_dc->bUseEnvVars!=0) {
+ if (sta->m_rc && sta->m_rc->env) vals=ap_table_get(sta->m_rc->env,wrapper->getHeader());
+ else vals = NULL;
+ } else {
+ vals=ap_table_get(sta->m_req->headers_in,wrapper->getHeader());
+ }
+
while (*t && vals && *vals) {
w=ap_getword_conf(sta->m_req->pool,&t);
if (*w=='~') {
#endif
+// Initial look at a request - create the per-request structure
+static int shib_post_read(request_rec *r)
+{
+ shib_request_config* rc = init_request_config(r);
+
+ ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r), "shib_post_read: E=%s\n", rc->env?"env":"hdr");
+
+#ifdef SHIB_DEFERRED_HEADERS
+ rc->hdr_out = ap_make_table(r->pool, 5);
+ rc->hdr_err = ap_make_table(r->pool, 5);
+#endif
+ return DECLINED;
+}
+
+// fixups: set environment vars
+
+extern "C" int shib_fixups(request_rec* r)
+{
+ shib_request_config *rc = (shib_request_config*)ap_get_module_config(r->request_config, &mod_shib);
+ shib_dir_config *dc = (shib_dir_config*)ap_get_module_config(r->per_dir_config, &mod_shib);
+ if (dc->bOff==1 || dc->bUseEnvVars==0)
+ return DECLINED;
+
+ ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r), "shib_fixup(%d): ENTER\n", (int)getpid());
+
+ if (rc==NULL || rc->env==NULL || ap_is_empty_table(rc->env))
+ return DECLINED;
+
+ ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r), "shib_fixup adding %d vars\n", ap_table_elts(rc->env)->nelts);
+ r->subprocess_env = ap_overlay_tables(r->pool, r->subprocess_env, rc->env);
+
+ return OK;
+}
+
/*
* shib_child_exit()
* Cleanup the (per-process) pool info.
ap_log_error(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(s),"shib_child_init() done");
}
+// Output filters
+#ifdef SHIB_DEFERRED_HEADERS
+static void set_output_filter(request_rec *r)
+{
+ ap_add_output_filter("SHIB_HEADERS_OUT", NULL, r, r->connection);
+}
+
+static void set_error_filter(request_rec *r)
+{
+ ap_add_output_filter("SHIB_HEADERS_ERR", NULL, r, r->connection);
+}
+
+static apr_status_t do_output_filter(ap_filter_t *f, apr_bucket_brigade *in)
+{
+ request_rec *r = f->r;
+ shib_request_config *rc = (shib_request_config*) ap_get_module_config(r->request_config, &mod_shib);
+
+ if (rc) {
+ ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_out_filter: merging %d headers", apr_table_elts(rc->hdr_out)->nelts);
+ apr_table_overlap(r->headers_out, rc->hdr_out, APR_OVERLAP_TABLES_MERGE);
+ }
+
+ /* remove ourselves from the filter chain */
+ ap_remove_output_filter(f);
+
+ /* send the data up the stack */
+ return ap_pass_brigade(f->next,in);
+}
+
+static apr_status_t do_error_filter(ap_filter_t *f, apr_bucket_brigade *in)
+{
+ request_rec *r = f->r;
+ shib_request_config *rc = (shib_request_config*) ap_get_module_config(r->request_config, &mod_shib);
+
+ if (rc) {
+ ap_log_rerror(APLOG_MARK,APLOG_DEBUG|APLOG_NOERRNO,SH_AP_R(r),"shib_err_filter: merging %d headers", apr_table_elts(rc->hdr_err)->nelts);
+ apr_table_overlap(r->err_headers_out, rc->hdr_err, APR_OVERLAP_TABLES_MERGE);
+ }
+
+ /* remove ourselves from the filter chain */
+ ap_remove_output_filter(f);
+
+ /* send the data up the stack */
+ return ap_pass_brigade(f->next,in);
+}
+#endif // SHIB_DEFERRED_HEADERS
+
typedef const char* (*config_fn_t)(void);
#ifdef SHIB_APACHE_13
{"ShibRequireAll", (config_fn_t)ap_set_flag_slot,
(void *) XtOffsetOf (shib_dir_config, bRequireAll),
OR_AUTHCFG, FLAG, "All require directives must match"},
+ {"ShibUseEnvironment", (config_fn_t)ap_set_flag_slot,
+ (void *) XtOffsetOf (shib_dir_config, bUseEnvVars),
+ OR_AUTHCFG, FLAG, "Export data in environment instead of headers (default)"},
{NULL}
};
shib_auth_checker, /* check auth */
NULL, /* check access */
NULL, /* type_checker */
- NULL, /* fixups */
+ shib_fixups, /* fixups */
NULL, /* logger */
NULL, /* header parser */
shib_child_init, /* child_init */
shib_child_exit, /* child_exit */
- NULL /* post read-request */
+ shib_post_read /* post read-request */
};
#elif defined(SHIB_APACHE_20) || defined(SHIB_APACHE_22)
extern "C" void shib_register_hooks (apr_pool_t *p)
{
+#ifdef SHIB_DEFERRED_HEADERS
+ ap_register_output_filter("SHIB_HEADERS_OUT", do_output_filter, NULL, AP_FTYPE_CONTENT_SET);
+ ap_hook_insert_filter(set_output_filter, NULL, NULL, APR_HOOK_LAST);
+ ap_register_output_filter("SHIB_HEADERS_ERR", do_error_filter, NULL, AP_FTYPE_CONTENT_SET);
+ ap_hook_insert_error_filter(set_error_filter, NULL, NULL, APR_HOOK_LAST);
+ ap_hook_post_read_request(shib_post_read, NULL, NULL, APR_HOOK_MIDDLE);
+#endif
ap_hook_child_init(shib_child_init, NULL, NULL, APR_HOOK_MIDDLE);
ap_hook_check_user_id(shib_check_user, NULL, NULL, APR_HOOK_MIDDLE);
ap_hook_auth_checker(shib_auth_checker, NULL, NULL, APR_HOOK_FIRST);
ap_hook_handler(shib_handler, NULL, NULL, APR_HOOK_LAST);
+ ap_hook_fixups(shib_fixups, NULL, NULL, APR_HOOK_MIDDLE);
}
// SHIB Module commands
AP_INIT_FLAG("ShibRequireAll", (config_fn_t)ap_set_flag_slot,
(void *) offsetof (shib_dir_config, bRequireAll),
OR_AUTHCFG, "All require directives must match"),
+ AP_INIT_FLAG("ShibUseEnvironment", (config_fn_t)ap_set_flag_slot,
+ (void *) offsetof (shib_dir_config, bUseEnvVars),
+ OR_AUTHCFG, "Export data in environment instead of headers (default)"),
{NULL}
};
projects / shibboleth / sp.git / commitdiff