DEALINGS IN THE SOFTWARE.
*/
-#include <stdbool.h>
-#include <stdint.h>
-#include <gssapi/gssapi.h>
-#include <gssapi/gssapi_ext.h>
-
-#include <httpd.h>
-#include <http_core.h>
-#include <http_connection.h>
-#include <http_log.h>
-#include <http_request.h>
-#include <apr_strings.h>
-#include <apr_base64.h>
+#include "mod_auth_gssapi.h"
+
+#define MOD_AUTH_GSSAPI_VERSION PACKAGE_NAME "/" PACKAGE_VERSION
module AP_MODULE_DECLARE_DATA auth_gssapi_module;
-APR_DECLARE_OPTIONAL_FN(int, ssl_is_https, (conn_rec *));
+APLOG_USE_MODULE(auth_gssapi);
-struct mag_config {
- bool ssl_only;
- bool map_to_local;
- bool gss_conn_ctx;
- gss_key_value_set_desc cred_store;
-};
+APR_DECLARE_OPTIONAL_FN(int, ssl_is_https, (conn_rec *));
static char *mag_status(request_rec *req, int type, uint32_t err)
{
static APR_OPTIONAL_FN_TYPE(ssl_is_https) *mag_is_https = NULL;
-static int mag_post_config(apr_pool_t *cfg, apr_pool_t *log,
+static int mag_post_config(apr_pool_t *cfgpool, apr_pool_t *log,
apr_pool_t *temp, server_rec *s)
{
/* FIXME: create mutex to deal with connections and contexts ? */
mag_is_https = APR_RETRIEVE_OPTIONAL_FN(ssl_is_https);
+ mag_post_config_session();
+ ap_add_version_component(cfgpool, MOD_AUTH_GSSAPI_VERSION);
return OK;
}
-
-struct mag_conn {
- gss_ctx_id_t ctx;
- bool established;
- char *user_name;
- char *gss_name;
-};
-
static int mag_pre_connection(conn_rec *c, void *csd)
{
struct mag_conn *mc;
mc = apr_pcalloc(c->pool, sizeof(struct mag_conn));
if (!mc) return DECLINED;
+ mc->parent = c->pool;
ap_set_module_config(c->conn_config, &auth_gssapi_module, (void*)mc);
return OK;
}
+static apr_status_t mag_conn_destroy(void *ptr)
+{
+ struct mag_conn *mc = (struct mag_conn *)ptr;
+ uint32_t min;
+
+ if (mc->ctx) {
+ (void)gss_delete_sec_context(&min, &mc->ctx, GSS_C_NO_BUFFER);
+ mc->established = false;
+ }
+ return APR_SUCCESS;
+}
+
static bool mag_conn_is_https(conn_rec *c)
{
if (mag_is_https) {
return false;
}
+static char *escape(apr_pool_t *pool, const char *name,
+ char find, const char *replace)
+{
+ char *escaped = NULL;
+ char *namecopy;
+ char *n;
+ char *p;
+
+ namecopy = apr_pstrdup(pool, name);
+ if (!namecopy) goto done;
+
+ p = strchr(namecopy, find);
+ if (!p) return namecopy;
+
+ /* first segment */
+ n = namecopy;
+ while (p) {
+ /* terminate previous segment */
+ *p = '\0';
+ if (escaped) {
+ escaped = apr_pstrcat(pool, escaped, n, replace, NULL);
+ } else {
+ escaped = apr_pstrcat(pool, n, replace, NULL);
+ }
+ if (!escaped) goto done;
+ /* move to next segment */
+ n = p + 1;
+ p = strchr(n, find);
+ }
+ /* append last segment if any */
+ if (*n) {
+ escaped = apr_pstrcat(pool, escaped, n, NULL);
+ }
+
+done:
+ if (!escaped) {
+ ap_log_error(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, NULL,
+ "OOM escaping name");
+ }
+ return escaped;
+}
+
+static void mag_store_deleg_creds(request_rec *req,
+ char *dir, char *clientname,
+ gss_cred_id_t delegated_cred,
+ char **ccachefile)
+{
+ gss_key_value_element_desc element;
+ gss_key_value_set_desc store;
+ char *value;
+ uint32_t maj, min;
+ char *escaped;
+
+ /* We need to escape away '/', we can't have path separators in
+ * a ccache file name */
+ /* first double escape the esacping char (~) if any */
+ escaped = escape(req->pool, clientname, '~', "~~");
+ if (!escaped) return;
+ /* then escape away the separator (/) if any */
+ escaped = escape(req->pool, escaped, '/', "~");
+ if (!escaped) return;
+
+ value = apr_psprintf(req->pool, "FILE:%s/%s", dir, escaped);
+ if (!value) {
+ ap_log_error(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, NULL,
+ "OOM storing delegated credentials");
+ return;
+ }
+
+ element.key = "ccache";
+ element.value = value;
+ store.elements = &element;
+ store.count = 1;
+
+ maj = gss_store_cred_into(&min, delegated_cred, GSS_C_INITIATE,
+ GSS_C_NULL_OID, 1, 1, &store, NULL, NULL);
+ if (GSS_ERROR(maj)) {
+ ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, req, "%s",
+ mag_error(req, "failed to store delegated creds",
+ maj, min));
+ }
+
+ *ccachefile = value;
+}
+
static int mag_auth(request_rec *req)
{
const char *type;
+ const char *auth_type;
struct mag_config *cfg;
const char *auth_header;
char *auth_header_type;
gss_buffer_desc output = GSS_C_EMPTY_BUFFER;
gss_buffer_desc name = GSS_C_EMPTY_BUFFER;
gss_name_t client = GSS_C_NO_NAME;
+ gss_cred_id_t user_cred = GSS_C_NO_CREDENTIAL;
+ gss_cred_id_t acquired_cred = GSS_C_NO_CREDENTIAL;
gss_cred_id_t delegated_cred = GSS_C_NO_CREDENTIAL;
+ gss_cred_usage_t cred_usage = GSS_C_ACCEPT;
uint32_t flags;
+ uint32_t vtime;
uint32_t maj, min;
char *reply;
size_t replen;
gss_OID mech_type = GSS_C_NO_OID;
gss_buffer_desc lname = GSS_C_EMPTY_BUFFER;
struct mag_conn *mc = NULL;
+ bool is_basic = false;
+ gss_ctx_id_t user_ctx = GSS_C_NO_CONTEXT;
+ gss_name_t server = GSS_C_NO_NAME;
+#ifdef HAVE_GSS_KRB5_CCACHE_NAME
+ const char *user_ccache = NULL;
+ const char *orig_ccache = NULL;
+#endif
+ uint32_t init_flags = 0;
+ time_t expiration;
type = ap_auth_type(req);
if ((type == NULL) || (strcasecmp(type, "GSSAPI") != 0)) {
cfg = ap_get_module_config(req->per_dir_config, &auth_gssapi_module);
+ /* implicit auth for subrequests if main auth already happened */
+ if (!ap_is_initial_req(req)) {
+ type = ap_auth_type(req->main);
+ if ((type != NULL) && (strcasecmp(type, "GSSAPI") == 0)) {
+ /* warn if the subrequest location and the main request
+ * location have different configs */
+ if (cfg != ap_get_module_config(req->main->per_dir_config,
+ &auth_gssapi_module)) {
+ ap_log_rerror(APLOG_MARK, APLOG_WARNING||APLOG_NOERRNO, 0,
+ req, "Subrequest authentication bypass on "
+ "location with different configuration!");
+ }
+ if (req->main->user) {
+ req->user = apr_pstrdup(req->pool, req->main->user);
+ return OK;
+ } else {
+ ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, req,
+ "The main request is tasked to establish the "
+ "security context, can't proceed!");
+ return HTTP_UNAUTHORIZED;
+ }
+ } else {
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, req,
+ "Subrequest GSSAPI auth with no auth on the main "
+ "request. This operation may fail if other "
+ "subrequests already established a context or the "
+ "mechanism requires multiple roundtrips.");
+ }
+ }
+
if (cfg->ssl_only) {
if (!mag_conn_is_https(req->connection)) {
ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, req,
req->connection->conn_config,
&auth_gssapi_module);
if (!mc) {
- return DECLINED;
+ ap_log_rerror(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, req,
+ "Failed to retrieve connection context!");
+ goto done;
}
+ }
+
+ /* if available, session always supersedes connection bound data */
+ if (cfg->use_sessions) {
+ mag_check_session(req, cfg, &mc);
+ }
+
+ if (mc) {
+ /* register the context in the memory pool, so it can be freed
+ * when the connection/request is terminated */
+ apr_pool_userdata_set(mc, "mag_conn_ptr",
+ mag_conn_destroy, mc->parent);
+
if (mc->established) {
ap_log_rerror(APLOG_MARK, APLOG_DEBUG|APLOG_NOERRNO, 0, req,
- "Connection bound pre-authentication found.");
+ "Already established context found!");
apr_table_set(req->subprocess_env, "GSS_NAME", mc->gss_name);
- req->ap_auth_type = apr_pstrdup(req->pool, "Negotiate");
+ apr_table_set(req->subprocess_env, "GSS_SESSION_EXPIRATION",
+ apr_psprintf(req->pool,
+ "%ld", (long)mc->expiration));
+ req->ap_auth_type = apr_pstrdup(req->pool, mc->auth_type);
req->user = apr_pstrdup(req->pool, mc->user_name);
ret = OK;
goto done;
auth_header_type = ap_getword_white(req->pool, &auth_header);
if (!auth_header_type) goto done;
- if (strcasecmp(auth_header_type, "Negotiate") != 0) goto done;
+ if (strcasecmp(auth_header_type, "Negotiate") == 0) {
+ auth_type = "Negotiate";
+
+ auth_header_value = ap_getword_white(req->pool, &auth_header);
+ if (!auth_header_value) goto done;
+ input.length = apr_base64_decode_len(auth_header_value) + 1;
+ input.value = apr_pcalloc(req->pool, input.length);
+ if (!input.value) goto done;
+ input.length = apr_base64_decode(input.value, auth_header_value);
+ } else if ((strcasecmp(auth_header_type, "Basic") == 0) &&
+ (cfg->use_basic_auth == true)) {
+ auth_type = "Basic";
+ is_basic = true;
+
+ gss_buffer_desc ba_user;
+ gss_buffer_desc ba_pwd;
+
+ ba_pwd.value = ap_pbase64decode(req->pool, auth_header);
+ if (!ba_pwd.value) goto done;
+ ba_user.value = ap_getword_nulls_nc(req->pool,
+ (char **)&ba_pwd.value, ':');
+ if (!ba_user.value) goto done;
+ if (((char *)ba_user.value)[0] == '\0' ||
+ ((char *)ba_pwd.value)[0] == '\0') {
+ ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, req,
+ "Invalid empty user or password for Basic Auth");
+ goto done;
+ }
+ ba_user.length = strlen(ba_user.value);
+ ba_pwd.length = strlen(ba_pwd.value);
+ maj = gss_import_name(&min, &ba_user, GSS_C_NT_USER_NAME, &client);
+ if (GSS_ERROR(maj)) {
+ ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, req,
+ "In Basic Auth, %s",
+ mag_error(req, "gss_import_name() failed",
+ maj, min));
+ goto done;
+ }
+#ifdef HAVE_GSS_KRB5_CCACHE_NAME
+ /* Set a per-thread ccache in case we are using kerberos,
+ * it is not elegant but avoids interference between threads */
+ long long unsigned int rndname;
+ apr_status_t rs;
+ rs = apr_generate_random_bytes((unsigned char *)(&rndname),
+ sizeof(long long unsigned int));
+ if (rs != APR_SUCCESS) {
+ ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, req,
+ "Failed to generate random ccache name");
+ goto done;
+ }
+ user_ccache = apr_psprintf(req->pool, "MEMORY:user_%qu", rndname);
+ maj = gss_krb5_ccache_name(&min, user_ccache, &orig_ccache);
+ if (GSS_ERROR(maj)) {
+ ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, req,
+ "In Basic Auth, %s",
+ mag_error(req, "gss_krb5_ccache_name() "
+ "failed", maj, min));
+ goto done;
+ }
+#endif
+ maj = gss_acquire_cred_with_password(&min, client, &ba_pwd,
+ GSS_C_INDEFINITE,
+ GSS_C_NO_OID_SET,
+ GSS_C_INITIATE,
+ &user_cred, NULL, NULL);
+ if (GSS_ERROR(maj)) {
+ ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, req,
+ "In Basic Auth, %s",
+ mag_error(req, "gss_acquire_cred_with_password() "
+ "failed", maj, min));
+ goto done;
+ }
+ gss_release_name(&min, &client);
+ } else {
+ goto done;
+ }
- auth_header_value = ap_getword_white(req->pool, &auth_header);
- if (!auth_header_value) goto done;
- input.length = apr_base64_decode_len(auth_header_value) + 1;
- input.value = apr_pcalloc(req->pool, input.length);
- if (!input.value) goto done;
- input.length = apr_base64_decode(input.value, auth_header_value);
+ req->ap_auth_type = apr_pstrdup(req->pool, auth_type);
- maj = gss_accept_sec_context(&min, pctx, GSS_C_NO_CREDENTIAL,
+#ifdef HAVE_GSS_ACQUIRE_CRED_FROM
+ if (cfg->use_s4u2proxy) {
+ cred_usage = GSS_C_BOTH;
+ }
+ if (cfg->cred_store) {
+ maj = gss_acquire_cred_from(&min, GSS_C_NO_NAME, GSS_C_INDEFINITE,
+ GSS_C_NO_OID_SET, cred_usage,
+ cfg->cred_store, &acquired_cred,
+ NULL, NULL);
+ if (GSS_ERROR(maj)) {
+ ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, req, "%s",
+ mag_error(req, "gss_acquire_cred_from() failed",
+ maj, min));
+ goto done;
+ }
+ }
+#endif
+
+ if (is_basic) {
+ if (!acquired_cred) {
+ /* Try to acquire default creds */
+ maj = gss_acquire_cred(&min, GSS_C_NO_NAME, GSS_C_INDEFINITE,
+ GSS_C_NO_OID_SET, cred_usage,
+ &acquired_cred, NULL, NULL);
+ if (GSS_ERROR(maj)) {
+ ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, req,
+ "%s", mag_error(req, "gss_acquire_cred_from()"
+ " failed", maj, min));
+ goto done;
+ }
+ }
+ maj = gss_inquire_cred(&min, acquired_cred, &server,
+ NULL, NULL, NULL);
+ if (GSS_ERROR(maj)) {
+ ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, req,
+ "%s", mag_error(req, "gss_inquired_cred_() "
+ "failed", maj, min));
+ goto done;
+ }
+
+ if (cfg->deleg_ccache_dir) {
+ /* delegate ourselves credentials so we store them as requested */
+ init_flags |= GSS_C_DELEG_FLAG;
+ }
+
+ /* output and input are inverted here, this is intentional */
+ maj = gss_init_sec_context(&min, user_cred, &user_ctx, server,
+ GSS_C_NO_OID, init_flags, 300,
+ GSS_C_NO_CHANNEL_BINDINGS, &output,
+ NULL, &input, NULL, NULL);
+ if (GSS_ERROR(maj)) {
+ ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, req,
+ "%s", mag_error(req, "gss_init_sec_context() "
+ "failed", maj, min));
+ goto done;
+ }
+ }
+
+ maj = gss_accept_sec_context(&min, pctx, acquired_cred,
&input, GSS_C_NO_CHANNEL_BINDINGS,
- &client, &mech_type, &output, &flags, NULL,
+ &client, &mech_type, &output, &flags, &vtime,
&delegated_cred);
if (GSS_ERROR(maj)) {
- ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, req,
+ ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, req, "%s",
mag_error(req, "gss_accept_sec_context() failed",
maj, min));
goto done;
}
-
- if (maj == GSS_S_CONTINUE_NEEDED) {
- if (!cfg->gss_conn_ctx) {
+ if (is_basic) {
+ while (maj == GSS_S_CONTINUE_NEEDED) {
+ gss_release_buffer(&min, &input);
+ /* output and input are inverted here, this is intentional */
+ maj = gss_init_sec_context(&min, user_cred, &user_ctx, server,
+ GSS_C_NO_OID, init_flags, 300,
+ GSS_C_NO_CHANNEL_BINDINGS, &output,
+ NULL, &input, NULL, NULL);
+ if (GSS_ERROR(maj)) {
+ ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, req,
+ "%s", mag_error(req, "gss_init_sec_context() "
+ "failed", maj, min));
+ goto done;
+ }
+ gss_release_buffer(&min, &output);
+ maj = gss_accept_sec_context(&min, pctx, acquired_cred,
+ &input, GSS_C_NO_CHANNEL_BINDINGS,
+ &client, &mech_type, &output, &flags,
+ &vtime, &delegated_cred);
+ if (GSS_ERROR(maj)) {
+ ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, req,
+ "%s", mag_error(req, "gss_accept_sec_context()"
+ " failed", maj, min));
+ goto done;
+ }
+ }
+ } else if (maj == GSS_S_CONTINUE_NEEDED) {
+ if (!mc) {
ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, req,
- "Mechanism needs continuation but "
- "GSSConnectionContext is off.");
+ "Mechanism needs continuation but neither "
+ "GssapiConnectionBound nor "
+ "GssapiUseSessions are available");
gss_delete_sec_context(&min, pctx, GSS_C_NO_BUFFER);
gss_release_buffer(&min, &output);
output.length = 0;
}
+ /* auth not complete send token and wait next packet */
goto done;
}
- /* once the connection has been accepted we do not need the context
- * anymore, discard it. FIXME: we also need a destructor for those
- * mechanisms (like NTLMSSP) that do not complete in one step */
- gss_delete_sec_context(&min, pctx, GSS_C_NO_BUFFER);
-
-#ifdef HAVE_GSS_STORE_CRED_INTO
- if (cfg->cred_store && delegated_cred != GSS_C_NO_CREDENTIAL) {
- gss_key_value_set_desc store = {0, NULL};
- /* FIXME: run substtutions */
-
- maj = gss_store_cred_into(&min, delegated_cred, GSS_C_INITIATE,
- GSS_C_NULL_OID, 1, 1, &store, NULL, NULL);
- }
-#endif
-
- req->ap_auth_type = apr_pstrdup(req->pool, "Negotiate");
-
/* Always set the GSS name in an env var */
maj = gss_display_name(&min, client, &name, NULL);
if (GSS_ERROR(maj)) {
- ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, req,
- mag_error(req, "gss_accept_sec_context() failed",
+ ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, req, "%s",
+ mag_error(req, "gss_display_name() failed",
maj, min));
goto done;
}
clientname = apr_pstrndup(req->pool, name.value, name.length);
apr_table_set(req->subprocess_env, "GSS_NAME", clientname);
+ expiration = time(NULL) + vtime;
+ apr_table_set(req->subprocess_env, "GSS_SESSION_EXPIRATION",
+ apr_psprintf(req->pool, "%ld", (long)expiration));
+
+#ifdef HAVE_GSS_STORE_CRED_INTO
+ if (cfg->deleg_ccache_dir && delegated_cred != GSS_C_NO_CREDENTIAL) {
+ char *ccachefile = NULL;
+
+ mag_store_deleg_creds(req, cfg->deleg_ccache_dir, clientname,
+ delegated_cred, &ccachefile);
+
+ if (ccachefile) {
+ apr_table_set(req->subprocess_env, "KRB5CCNAME", ccachefile);
+ }
+ }
+#endif
if (cfg->map_to_local) {
maj = gss_localname(&min, client, mech_type, &lname);
if (maj != GSS_S_COMPLETE) {
- ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, req,
+ ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, req, "%s",
mag_error(req, "gss_localname() failed", maj, min));
goto done;
}
}
if (mc) {
- mc->user_name = apr_pstrdup(req->connection->pool, req->user);
- mc->gss_name = apr_pstrdup(req->connection->pool, clientname);
+ mc->user_name = apr_pstrdup(mc->parent, req->user);
+ mc->gss_name = apr_pstrdup(mc->parent, clientname);
mc->established = true;
+ if (vtime == GSS_C_INDEFINITE || vtime < MIN_SESS_EXP_TIME) {
+ vtime = MIN_SESS_EXP_TIME;
+ }
+ mc->expiration = expiration;
+ if (cfg->use_sessions) {
+ mag_attempt_session(req, cfg, mc);
+ }
+ mc->auth_type = auth_type;
}
ret = OK;
done:
- if (ret == HTTP_UNAUTHORIZED) {
- if (output.length != 0) {
- replen = apr_base64_encode_len(output.length) + 1;
- reply = apr_pcalloc(req->pool, 10 + replen);
- if (reply) {
- memcpy(reply, "Negotiate ", 10);
- apr_base64_encode(&reply[10], output.value, output.length);
- apr_table_add(req->err_headers_out,
- "WWW-Authenticate", reply);
- }
- } else {
+ if ((!is_basic) && (output.length != 0)) {
+ replen = apr_base64_encode_len(output.length) + 1;
+ reply = apr_pcalloc(req->pool, 10 + replen);
+ if (reply) {
+ memcpy(reply, "Negotiate ", 10);
+ apr_base64_encode(&reply[10], output.value, output.length);
apr_table_add(req->err_headers_out,
- "WWW-Authenticate", "Negotiate");
+ "WWW-Authenticate", reply);
+ }
+ } else if (ret == HTTP_UNAUTHORIZED) {
+ apr_table_add(req->err_headers_out,
+ "WWW-Authenticate", "Negotiate");
+ if (cfg->use_basic_auth) {
+ apr_table_add(req->err_headers_out,
+ "WWW-Authenticate",
+ apr_psprintf(req->pool, "Basic realm=\"%s\"",
+ ap_auth_name(req)));
+ }
+ }
+#ifdef HAVE_GSS_KRB5_CCACHE_NAME
+ if (user_ccache != NULL) {
+ maj = gss_krb5_ccache_name(&min, orig_ccache, NULL);
+ if (maj != GSS_S_COMPLETE) {
+ ap_log_rerror(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, req,
+ "Failed to restore per-thread ccache, %s",
+ mag_error(req, "gss_krb5_ccache_name() "
+ "failed", maj, min));
}
}
+#endif
+ gss_delete_sec_context(&min, &user_ctx, &output);
+ gss_release_cred(&min, &user_cred);
+ gss_release_cred(&min, &acquired_cred);
gss_release_cred(&min, &delegated_cred);
gss_release_buffer(&min, &output);
gss_release_name(&min, &client);
+ gss_release_name(&min, &server);
gss_release_buffer(&min, &name);
gss_release_buffer(&min, &lname);
return ret;
cfg = (struct mag_config *)apr_pcalloc(p, sizeof(struct mag_config));
if (!cfg) return NULL;
+ cfg->pool = p;
return cfg;
}
return NULL;
}
+static const char *mag_use_sess(cmd_parms *parms, void *mconfig, int on)
+{
+ struct mag_config *cfg = (struct mag_config *)mconfig;
+ cfg->use_sessions = on ? true : false;
+ return NULL;
+}
+
+static const char *mag_use_s4u2p(cmd_parms *parms, void *mconfig, int on)
+{
+ struct mag_config *cfg = (struct mag_config *)mconfig;
+ cfg->use_s4u2proxy = on ? true : false;
+
+ if (cfg->deleg_ccache_dir == NULL) {
+ cfg->deleg_ccache_dir = apr_pstrdup(parms->pool, "/tmp");
+ if (!cfg->deleg_ccache_dir) {
+ ap_log_error(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0,
+ parms->server, "%s", "OOM setting deleg_ccache_dir.");
+ }
+ }
+ return NULL;
+}
+
+static const char *mag_sess_key(cmd_parms *parms, void *mconfig, const char *w)
+{
+ struct mag_config *cfg = (struct mag_config *)mconfig;
+ struct databuf keys;
+ unsigned char *val;
+ apr_status_t rc;
+ const char *k;
+ int l;
+
+ if (strncmp(w, "key:", 4) != 0) {
+ ap_log_error(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, parms->server,
+ "Invalid key format, expected prefix 'key:'");
+ return NULL;
+ }
+ k = w + 4;
+
+ l = apr_base64_decode_len(k);
+ val = apr_palloc(parms->temp_pool, l);
+ if (!val) {
+ ap_log_error(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, parms->server,
+ "Failed to get memory to decode key");
+ return NULL;
+ }
+
+ keys.length = (int)apr_base64_decode_binary(val, k);
+ keys.value = (unsigned char *)val;
+
+ if (keys.length != 32) {
+ ap_log_error(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, parms->server,
+ "Invalid key lenght, expected 32 got %d", keys.length);
+ return NULL;
+ }
+
+ rc = SEAL_KEY_CREATE(cfg->pool, &cfg->mag_skey, &keys);
+ if (rc != OK) {
+ ap_log_error(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, parms->server,
+ "Failed to import sealing key!");
+ }
+ return NULL;
+}
+
+#define MAX_CRED_OPTIONS 10
+
static const char *mag_cred_store(cmd_parms *parms, void *mconfig,
const char *w)
{
p = strchr(w, ':');
if (!p) {
ap_log_error(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, parms->server,
- "%s [%s]", "Invalid syntax for GSSCredStore option", w);
+ "%s [%s]", "Invalid syntax for GssapiCredStore option", w);
return NULL;
}
value = apr_pstrdup(parms->pool, p + 1);
if (!key || !value) {
ap_log_error(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, parms->server,
- "%s", "OOM handling GSSCredStore option");
+ "%s", "OOM handling GssapiCredStore option");
return NULL;
}
- size = sizeof(gss_key_value_element_desc) * cfg->cred_store.count + 1;
- elements = apr_palloc(parms->pool, size);
- if (!elements) {
+ if (!cfg->cred_store) {
+ cfg->cred_store = apr_pcalloc(parms->pool,
+ sizeof(gss_key_value_set_desc));
+ if (!cfg->cred_store) {
+ ap_log_error(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, parms->server,
+ "%s", "OOM handling GssapiCredStore option");
+ return NULL;
+ }
+ size = sizeof(gss_key_value_element_desc) * MAX_CRED_OPTIONS;
+ cfg->cred_store->elements = apr_palloc(parms->pool, size);
+ if (!cfg->cred_store->elements) {
+ ap_log_error(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, parms->server,
+ "%s", "OOM handling GssapiCredStore option");
+ }
+ }
+
+ elements = cfg->cred_store->elements;
+ count = cfg->cred_store->count;
+
+ if (count >= MAX_CRED_OPTIONS) {
ap_log_error(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, parms->server,
- "%s", "OOM handling GSSCredStore option");
+ "Too many GssapiCredStore options (MAX: %d)",
+ MAX_CRED_OPTIONS);
return NULL;
}
+ cfg->cred_store->count++;
- for (count = 0; count < cfg->cred_store.count; count++) {
- elements[count] = cfg->cred_store.elements[count];
- }
elements[count].key = key;
elements[count].value = value;
- cfg->cred_store.elements = elements;
- cfg->cred_store.count = count;
+ return NULL;
+}
+
+static const char *mag_deleg_ccache_dir(cmd_parms *parms, void *mconfig,
+ const char *value)
+{
+ struct mag_config *cfg = (struct mag_config *)mconfig;
+
+ cfg->deleg_ccache_dir = apr_pstrdup(parms->pool, value);
+ if (!cfg->deleg_ccache_dir) {
+ ap_log_error(APLOG_MARK, APLOG_ERR|APLOG_NOERRNO, 0, parms->server,
+ "%s", "OOM handling GssapiDelegCcacheDir option");
+ }
+
+ return NULL;
+}
+
+static const char *mag_use_basic_auth(cmd_parms *parms, void *mconfig, int on)
+{
+ struct mag_config *cfg = (struct mag_config *)mconfig;
+ cfg->use_basic_auth = on ? true : false;
return NULL;
}
static const command_rec mag_commands[] = {
- AP_INIT_FLAG("GSSSSLOnly", mag_ssl_only, NULL, OR_AUTHCFG,
+ AP_INIT_FLAG("GssapiSSLonly", mag_ssl_only, NULL, OR_AUTHCFG,
"Work only if connection is SSL Secured"),
- AP_INIT_FLAG("GSSLocalName", mag_map_to_local, NULL, OR_AUTHCFG,
- "Work only if connection is SSL Secured"),
- AP_INIT_FLAG("GSSConnectionContext", mag_conn_ctx, NULL, OR_AUTHCFG,
- "Authentication is valid for the life of the connection"),
- AP_INIT_ITERATE("GSSCredStore", mag_cred_store, NULL, OR_AUTHCFG,
+ AP_INIT_FLAG("GssapiLocalName", mag_map_to_local, NULL, OR_AUTHCFG,
+ "Translate principals to local names"),
+ AP_INIT_FLAG("GssapiConnectionBound", mag_conn_ctx, NULL, OR_AUTHCFG,
+ "Authentication is bound to the TCP connection"),
+ AP_INIT_FLAG("GssapiUseSessions", mag_use_sess, NULL, OR_AUTHCFG,
+ "Authentication uses mod_sessions to hold status"),
+ AP_INIT_RAW_ARGS("GssapiSessionKey", mag_sess_key, NULL, OR_AUTHCFG,
+ "Key Used to seal session data."),
+#ifdef HAVE_GSS_ACQUIRE_CRED_FROM
+ AP_INIT_FLAG("GssapiUseS4U2Proxy", mag_use_s4u2p, NULL, OR_AUTHCFG,
+ "Initializes credentials for s4u2proxy usage"),
+#endif
+#ifdef HAVE_GSS_STORE_CRED_INTO
+ AP_INIT_ITERATE("GssapiCredStore", mag_cred_store, NULL, OR_AUTHCFG,
"Credential Store"),
+ AP_INIT_RAW_ARGS("GssapiDelegCcacheDir", mag_deleg_ccache_dir, NULL,
+ OR_AUTHCFG, "Directory to store delegated credentials"),
+#endif
+#ifdef HAVE_GSS_ACQUIRE_CRED_WITH_PASSWORD
+ AP_INIT_FLAG("GssapiBasicAuth", mag_use_basic_auth, NULL, OR_AUTHCFG,
+ "Allows use of Basic Auth for authentication"),
+#endif
{ NULL }
};
projects / mod_auth_gssapi.git / blobdiff