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32 #include "mod_auth_gssapi.h"
35 gss_log(const char *file,
37 #if AP_SERVER_MAJORVERSION_NUMBER == 2 && AP_SERVER_MINORVERSION_NUMBER == 4
49 vsnprintf(errstr, sizeof(errstr), fmt, ap);
54 #if AP_SERVER_MAJORVERSION_NUMBER == 2 && AP_SERVER_MINORVERSION_NUMBER == 4
57 level | APLOG_NOERRNO,
65 gss_cleanup_conn_ctx(void *data)
67 gss_conn_ctx ctx = (gss_conn_ctx) data;
68 OM_uint32 minor_status;
70 if (ctx && ctx->context != GSS_C_NO_CONTEXT)
71 gss_delete_sec_context(&minor_status, &ctx->context, GSS_C_NO_BUFFER);
73 if (ctx && ctx->server_creds != GSS_C_NO_CREDENTIAL)
74 gss_release_cred(&minor_status, &ctx->server_creds);
80 gss_create_conn_ctx(request_rec *r, gss_auth_config *conf)
83 gss_conn_ctx ctx = NULL;
85 snprintf(key, sizeof(key), "mod_auth_gssweb:conn_ctx");
87 if (NULL == (ctx = (gss_conn_ctx) apr_palloc(r->connection->pool, sizeof(*ctx)))) {
88 gss_log(APLOG_MARK, APLOG_ERR, 0, r, "gss_create_conn_ctx: Can't allocate GSS context");
91 ctx->context = GSS_C_NO_CONTEXT;
92 ctx->state = GSS_CTX_EMPTY;
93 ctx->filter_stat = GSS_FILT_NEW;
96 /* Acquire and store server credentials */
97 if (0 == get_gss_creds(r, conf, &(ctx->server_creds))) {
98 gss_log(APLOG_MARK, APLOG_DEBUG, 0, r, "gss_create_conn_ctx: Server credentials acquired");
100 gss_log(APLOG_MARK, APLOG_ERR, 0, r, "gss_create_conn_ctx: Error: Server credentials NOT acquired");
104 apr_pool_userdata_set(ctx, key, gss_cleanup_conn_ctx, r->connection->pool);
110 gss_retrieve_conn_ctx(request_rec *r)
113 gss_conn_ctx ctx = NULL;
115 snprintf(key, sizeof(key), "mod_auth_gssweb:conn_ctx");
116 apr_pool_userdata_get((void **)&ctx, key, r->connection->pool);
119 gss_log(APLOG_MARK, APLOG_DEBUG, 0, r, "gss_retrieve_conn_ctx: No GSS context found");
125 gss_config_dir_create(apr_pool_t *p, char *d)
127 gss_auth_config *conf;
129 conf = (gss_auth_config *) apr_pcalloc(p, sizeof(*conf));
135 get_gss_error(request_rec *r, OM_uint32 err_maj, OM_uint32 err_min, char *prefix)
137 OM_uint32 maj_stat, min_stat;
138 OM_uint32 msg_ctx = 0;
139 gss_buffer_desc status_string;
143 gss_log(APLOG_MARK, APLOG_DEBUG, 0, r,
144 "GSS-API major_status:%8.8x, minor_status:%8.8x",
147 err_msg = apr_pstrdup(r->pool, prefix);
149 maj_stat = gss_display_status (&min_stat,
155 if (!GSS_ERROR(maj_stat)) {
156 err_msg = apr_pstrcat(r->pool, err_msg,
157 ": ", (char*) status_string.value, NULL);
158 gss_release_buffer(&min_stat, &status_string);
161 } while (!GSS_ERROR(maj_stat) && msg_ctx != 0);
164 err_msg = apr_pstrcat(r->pool, err_msg, " (", NULL);
167 maj_stat = gss_display_status (&min_stat,
173 if (!GSS_ERROR(maj_stat)) {
174 err_msg = apr_pstrcat(r->pool, err_msg,
175 (first_pass) ? "" : ", ",
176 (char *) status_string.value,
178 gss_release_buffer(&min_stat, &status_string);
181 } while (!GSS_ERROR(maj_stat) && msg_ctx != 0);
182 err_msg = apr_pstrcat(r->pool, err_msg, ")", NULL);
188 get_gss_creds(request_rec *r,
189 gss_auth_config *conf,
190 gss_cred_id_t *server_creds)
192 gss_buffer_desc token = GSS_C_EMPTY_BUFFER;
193 OM_uint32 major_status, minor_status, minor_status2;
194 gss_name_t server_name = GSS_C_NO_NAME;
196 int have_server_princ;
198 if (conf->service_name && strcmp(conf->service_name, "Any") == 0) {
199 *server_creds = GSS_C_NO_CREDENTIAL;
203 have_server_princ = conf->service_name && strchr(conf->service_name, '/') != NULL;
204 if (have_server_princ)
205 strncpy(buf, conf->service_name, sizeof(buf));
207 snprintf(buf, sizeof(buf), "%s@%s",
208 (conf->service_name) ? conf->service_name : SERVICE_NAME,
209 ap_get_server_name(r));
212 token.length = strlen(buf) + 1;
214 major_status = gss_import_name(&minor_status, &token,
215 (have_server_princ) ? (gss_OID) GSS_KRB5_NT_PRINCIPAL_NAME : (gss_OID) GSS_C_NT_HOSTBASED_SERVICE,
217 memset(&token, 0, sizeof(token));
218 if (GSS_ERROR(major_status)) {
219 gss_log(APLOG_MARK, APLOG_ERR, 0, r,
220 "%s", get_gss_error(r, major_status, minor_status,
221 "gss_import_name() failed"));
222 return HTTP_INTERNAL_SERVER_ERROR;
225 major_status = gss_display_name(&minor_status, server_name, &token, NULL);
226 if (GSS_ERROR(major_status)) {
227 /* Perhaps we could just ignore this error but it's safer to give up now,
229 gss_log(APLOG_MARK, APLOG_ERR, 0, r,
230 "%s", get_gss_error(r, major_status, minor_status,
231 "gss_display_name() failed"));
232 return HTTP_INTERNAL_SERVER_ERROR;
235 gss_log(APLOG_MARK, APLOG_DEBUG, 0, r, "Acquiring creds for %s", token.value);
236 gss_release_buffer(&minor_status, &token);
238 major_status = gss_acquire_cred(&minor_status, server_name, GSS_C_INDEFINITE,
239 GSS_C_NO_OID_SET, GSS_C_ACCEPT,
240 server_creds, NULL, NULL);
241 gss_release_name(&minor_status2, &server_name);
242 if (GSS_ERROR(major_status)) {
243 gss_log(APLOG_MARK, APLOG_ERR, 0, r,
244 "%s", get_gss_error(r, major_status, minor_status,
245 "Failed to load GSS-API credentials"));
246 return HTTP_INTERNAL_SERVER_ERROR;
253 cmp_gss_type(gss_buffer_t token, gss_OID oid)
258 if (token->length == 0)
259 return GSS_S_DEFECTIVE_TOKEN;
263 return GSS_S_DEFECTIVE_TOKEN;
266 if ((len & 0x7f) > 4)
267 return GSS_S_DEFECTIVE_TOKEN;
271 return GSS_S_DEFECTIVE_TOKEN;
273 if (((OM_uint32) *p++) != oid->length)
274 return GSS_S_DEFECTIVE_TOKEN;
276 return memcmp(p, oid->elements, oid->length);