#include "mod_auth_gssapi.h"
-static const char *
+void
+gss_log(const char *file,
+ int line,
+#if AP_SERVER_MAJORVERSION_NUMBER == 2 && AP_SERVER_MINORVERSION_NUMBER == 4
+ int module_index,
+#endif
+ int level,
+ int status,
+ const request_rec *r,
+ const char *fmt, ...)
+{
+ char errstr[1024];
+ va_list ap;
+
+ va_start(ap, fmt);
+ vsnprintf(errstr, sizeof(errstr), fmt, ap);
+ va_end(ap);
+
+ ap_log_rerror(file,
+ line,
+#if AP_SERVER_MAJORVERSION_NUMBER == 2 && AP_SERVER_MINORVERSION_NUMBER == 4
+ module_index,
+#endif
+ level | APLOG_NOERRNO,
+ status,
+ r,
+ "%s",
+ errstr);
+}
+
+apr_status_t
+gss_cleanup_conn_ctx(void *data)
+{
+ gss_conn_ctx ctx = (gss_conn_ctx) data;
+ OM_uint32 minor_status;
+
+ if (ctx && ctx->context != GSS_C_NO_CONTEXT)
+ gss_delete_sec_context(&minor_status, &ctx->context, GSS_C_NO_BUFFER);
+
+ if (ctx && ctx->server_creds != GSS_C_NO_CREDENTIAL)
+ gss_release_cred(&minor_status, &ctx->server_creds);
+
+ return APR_SUCCESS;
+}
+
+gss_conn_ctx
+gss_create_conn_ctx(request_rec *r, gss_auth_config *conf)
+{
+ char key[1024];
+ gss_conn_ctx ctx = NULL;
+
+ snprintf(key, sizeof(key), "mod_auth_gssweb:conn_ctx");
+
+ if (NULL == (ctx = (gss_conn_ctx) apr_palloc(r->connection->pool, sizeof(*ctx)))) {
+ gss_log(APLOG_MARK, APLOG_ERR, 0, r, "gss_create_conn_ctx: Can't allocate GSS context");
+ return NULL;
+ }
+ ctx->context = GSS_C_NO_CONTEXT;
+ ctx->state = GSS_CTX_EMPTY;
+ ctx->filter_stat = GSS_FILT_NEW;
+ ctx->user = NULL;
+
+ /* Acquire and store server credentials */
+ if (0 == get_gss_creds(r, conf, &(ctx->server_creds))) {
+ gss_log(APLOG_MARK, APLOG_DEBUG, 0, r, "gss_create_conn_ctx: Server credentials acquired");
+ } else {
+ gss_log(APLOG_MARK, APLOG_ERR, 0, r, "gss_create_conn_ctx: Error: Server credentials NOT acquired");
+ return NULL;
+ }
+
+ apr_pool_userdata_set(ctx, key, gss_cleanup_conn_ctx, r->connection->pool);
+
+ return ctx;
+}
+
+gss_conn_ctx
+gss_retrieve_conn_ctx(request_rec *r)
+{
+ char key[1024];
+ gss_conn_ctx ctx = NULL;
+
+ snprintf(key, sizeof(key), "mod_auth_gssweb:conn_ctx");
+ apr_pool_userdata_get((void **)&ctx, key, r->connection->pool);
+
+ if (NULL == ctx)
+ gss_log(APLOG_MARK, APLOG_DEBUG, 0, r, "gss_retrieve_conn_ctx: No GSS context found");
+
+ return ctx;
+}
+
+void *
+gss_config_dir_create(apr_pool_t *p, char *d)
+{
+ gss_auth_config *conf;
+
+ conf = (gss_auth_config *) apr_pcalloc(p, sizeof(*conf));
+ return conf;
+}
+
+
+const char *
get_gss_error(request_rec *r, OM_uint32 err_maj, OM_uint32 err_min, char *prefix)
{
OM_uint32 maj_stat, min_stat;
return err_msg;
}
-static int
+int
get_gss_creds(request_rec *r,
gss_auth_config *conf,
gss_cred_id_t *server_creds)
return 0;
}
-static int
+int
cmp_gss_type(gss_buffer_t token, gss_OID oid)
{
unsigned char *p;
return memcmp(p, oid->elements, oid->length);
}
-int
-gss_authenticate(request_rec *r, gss_auth_config *conf, gss_conn_ctx ctx,
- const char *auth_line, char **negotiate_ret_value)
-{
- OM_uint32 major_status, minor_status, minor_status2;
- gss_buffer_desc input_token = GSS_C_EMPTY_BUFFER;
- gss_buffer_desc output_token = GSS_C_EMPTY_BUFFER;
- const char *auth_param = NULL;
- int ret;
- gss_name_t client_name = GSS_C_NO_NAME;
- gss_cred_id_t delegated_cred = GSS_C_NO_CREDENTIAL;
- gss_cred_id_t server_creds = GSS_C_NO_CREDENTIAL;
- OM_uint32 ret_flags = 0;
- gss_OID_desc spnego_oid;
- OM_uint32 (*accept_sec_context)
- (OM_uint32 *, gss_ctx_id_t *, const gss_cred_id_t,
- const gss_buffer_t, const gss_channel_bindings_t,
- gss_name_t *, gss_OID *, gss_buffer_t, OM_uint32 *,
- OM_uint32 *, gss_cred_id_t *);
-
- *negotiate_ret_value = "\0";
-
- spnego_oid.length = 6;
- spnego_oid.elements = (void *)"\x2b\x06\x01\x05\x05\x02";
-
- if (conf->krb5_keytab) {
- char *ktname;
- /* we don't use the ap_* calls here, since the string passed to putenv()
- * will become part of the enviroment and shouldn't be free()ed by apache
- */
- ktname = malloc(strlen("KRB5_KTNAME=") + strlen(conf->krb5_keytab) + 1);
- if (ktname == NULL) {
- gss_log(APLOG_MARK, APLOG_ERR, 0, r, "malloc() failed: not enough memory");
- ret = HTTP_INTERNAL_SERVER_ERROR;
- goto end;
- }
- sprintf(ktname, "KRB5_KTNAME=%s", conf->krb5_keytab);
- putenv(ktname);
-#ifdef HEIMDAL
- /* Seems to be also supported by latest MIT */
- gsskrb5_register_acceptor_identity(conf->krb_5_keytab);
-#endif
- }
-
- ret = get_gss_creds(r, conf, &server_creds);
- if (ret)
- goto end;
-
- /* ap_getword() shifts parameter */
- auth_param = ap_getword_white(r->pool, &auth_line);
- if (auth_param == NULL) {
- gss_log(APLOG_MARK, APLOG_ERR, 0, r,
- "No Authorization parameter in request from client");
- ret = HTTP_UNAUTHORIZED;
- goto end;
- }
-
- if (ctx->state == GSS_CTX_ESTABLISHED) {
- gss_delete_sec_context(&minor_status, &ctx->context, GSS_C_NO_BUFFER);
- ctx->context = GSS_C_NO_CONTEXT;
- ctx->state = GSS_CTX_EMPTY;
- }
-
- input_token.length = apr_base64_decode_len(auth_param) + 1;
- input_token.value = apr_pcalloc(r->connection->pool, input_token.length);
- if (input_token.value == NULL) {
- gss_log(APLOG_MARK, APLOG_ERR, 0, r,
- "ap_pcalloc() failed (not enough memory)");
- ret = HTTP_INTERNAL_SERVER_ERROR;
- goto end;
- }
- input_token.length = apr_base64_decode(input_token.value, auth_param);
-
- /* LOG length, type */
-
-#ifdef GSSAPI_SUPPORTS_SPNEGO
- accept_sec_context = gss_accept_sec_context;
-#else
- accept_sec_context = (cmp_gss_type(&input_token, &spnego_oid) == 0) ?
- gss_accept_sec_context_spnego : gss_accept_sec_context;
-#endif
-
- major_status = accept_sec_context(&minor_status,
- &ctx->context,
- server_creds,
- &input_token,
- GSS_C_NO_CHANNEL_BINDINGS,
- NULL,
- NULL,
- &output_token,
- &ret_flags,
- NULL,
- &delegated_cred);
- gss_log(APLOG_MARK, APLOG_DEBUG, 0, r,
- "Client %s us their credential",
- (ret_flags & GSS_C_DELEG_FLAG) ? "delegated" : "didn't delegate");
- if (output_token.length) {
- char *token = NULL;
- size_t len;
-
- len = apr_base64_encode_len(output_token.length) + 1;
- token = apr_pcalloc(r->connection->pool, len + 1);
- if (token == NULL) {
- gss_log(APLOG_MARK, APLOG_ERR, 0, r,
- "ap_pcalloc() failed (not enough memory)");
- ret = HTTP_INTERNAL_SERVER_ERROR;
- gss_release_buffer(&minor_status2, &output_token);
- goto end;
- }
- apr_base64_encode(token, output_token.value, output_token.length);
- token[len] = '\0';
- *negotiate_ret_value = token;
- gss_log(APLOG_MARK, APLOG_DEBUG, 0, r,
- "GSS-API token of length %d bytes will be sent back",
- output_token.length);
- gss_release_buffer(&minor_status2, &output_token);
- }
-
- if (GSS_ERROR(major_status)) {
- gss_log(APLOG_MARK, APLOG_ERR, 0, r,
- "%s", get_gss_error(r, major_status, minor_status,
- "Failed to establish authentication"));
-#if 0
- /* Don't offer the Negotiate method again if call to GSS layer failed */
- /* XXX ... which means we don't return the "error" output */
- *negotiate_ret_value = NULL;
-#endif
- gss_delete_sec_context(&minor_status, &ctx->context, GSS_C_NO_BUFFER);
- ctx->context = GSS_C_NO_CONTEXT;
- ctx->state = GSS_CTX_EMPTY;
- ret = HTTP_UNAUTHORIZED;
- goto end;
- }
-
- if (major_status & GSS_S_CONTINUE_NEEDED) {
- ctx->state = GSS_CTX_IN_PROGRESS;
- ret = HTTP_UNAUTHORIZED;
- goto end;
- }
-
- major_status = gss_inquire_context(&minor_status, ctx->context, &client_name,
- NULL, NULL, NULL, NULL, NULL, NULL);
- if (GSS_ERROR(major_status)) {
- gss_log(APLOG_MARK, APLOG_ERR, 0, r,
- "%s", get_gss_error(r, major_status, minor_status, "gss_inquire_context() failed"));
- ret = HTTP_INTERNAL_SERVER_ERROR;
- goto end;
- }
-
- major_status = gss_display_name(&minor_status, client_name, &output_token, NULL);
- gss_release_name(&minor_status, &client_name);
- if (GSS_ERROR(major_status)) {
- gss_log(APLOG_MARK, APLOG_ERR, 0, r,
- "%s", get_gss_error(r, major_status, minor_status,
- "gss_display_name() failed"));
- ret = HTTP_INTERNAL_SERVER_ERROR;
- goto end;
- }
-
- ctx->state = GSS_CTX_ESTABLISHED;
- ctx->user = apr_pstrdup(r->pool, output_token.value);
- gss_release_buffer(&minor_status, &output_token);
-
- ret = OK;
-
-end:
- if (delegated_cred)
- gss_release_cred(&minor_status, &delegated_cred);
-
- if (output_token.length)
- gss_release_buffer(&minor_status, &output_token);
-
- if (client_name != GSS_C_NO_NAME)
- gss_release_name(&minor_status, &client_name);
-
- if (server_creds != GSS_C_NO_CREDENTIAL)
- gss_release_cred(&minor_status, &server_creds);
-
- return ret;
-}
projects / mod_auth_kerb.cvs / .git / blobdiff