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32 #include "mod_auth_gssapi.h"
35 gss_log(const char *file, int line, int level, int status,
36 const request_rec *r, const char *fmt, ...)
42 vsnprintf(errstr, sizeof(errstr), fmt, ap);
45 ap_log_rerror(file, line, level | APLOG_NOERRNO, status, r, "%s", errstr);
49 gss_cleanup_conn_ctx(void *data)
51 gss_conn_ctx ctx = (gss_conn_ctx) data;
52 OM_uint32 minor_status;
54 if (ctx && ctx->context != GSS_C_NO_CONTEXT)
55 gss_delete_sec_context(&minor_status, &ctx->context, GSS_C_NO_BUFFER);
57 if (ctx && ctx->server_creds != GSS_C_NO_CREDENTIAL)
58 gss_release_cred(&minor_status, &ctx->server_creds);
64 gss_create_conn_ctx(request_rec *r, gss_auth_config *conf)
67 gss_conn_ctx ctx = NULL;
69 snprintf(key, sizeof(key), "mod_auth_gssweb:conn_ctx");
71 if (NULL == (ctx = (gss_conn_ctx) apr_palloc(r->connection->pool, sizeof(*ctx)))) {
72 gss_log(APLOG_MARK, APLOG_ERR, 0, r, "gss_create_conn_ctx: Can't allocate GSS context");
75 ctx->context = GSS_C_NO_CONTEXT;
76 ctx->state = GSS_CTX_EMPTY;
77 ctx->filter_stat = GSS_FILT_NEW;
80 /* Acquire and store server credentials */
81 if (0 == get_gss_creds(r, conf, &(ctx->server_creds))) {
82 gss_log(APLOG_MARK, APLOG_DEBUG, 0, r, "gss_create_conn_ctx: Server credentials acquired");
84 gss_log(APLOG_MARK, APLOG_ERR, 0, r, "gss_create_conn_ctx: Error: Server credentials NOT acquired");
88 apr_pool_userdata_set(ctx, key, gss_cleanup_conn_ctx, r->connection->pool);
94 gss_retrieve_conn_ctx(request_rec *r)
97 gss_conn_ctx ctx = NULL;
99 snprintf(key, sizeof(key), "mod_auth_gssweb:conn_ctx");
100 apr_pool_userdata_get((void **)&ctx, key, r->connection->pool);
103 gss_log(APLOG_MARK, APLOG_DEBUG, 0, r, "gss_retrieve_conn_ctx: No GSS context found");
109 gss_config_dir_create(apr_pool_t *p, char *d)
111 gss_auth_config *conf;
113 conf = (gss_auth_config *) apr_pcalloc(p, sizeof(*conf));
119 get_gss_error(request_rec *r, OM_uint32 err_maj, OM_uint32 err_min, char *prefix)
121 OM_uint32 maj_stat, min_stat;
122 OM_uint32 msg_ctx = 0;
123 gss_buffer_desc status_string;
127 gss_log(APLOG_MARK, APLOG_DEBUG, 0, r,
128 "GSS-API major_status:%8.8x, minor_status:%8.8x",
131 err_msg = apr_pstrdup(r->pool, prefix);
133 maj_stat = gss_display_status (&min_stat,
139 if (!GSS_ERROR(maj_stat)) {
140 err_msg = apr_pstrcat(r->pool, err_msg,
141 ": ", (char*) status_string.value, NULL);
142 gss_release_buffer(&min_stat, &status_string);
145 } while (!GSS_ERROR(maj_stat) && msg_ctx != 0);
148 err_msg = apr_pstrcat(r->pool, err_msg, " (", NULL);
151 maj_stat = gss_display_status (&min_stat,
157 if (!GSS_ERROR(maj_stat)) {
158 err_msg = apr_pstrcat(r->pool, err_msg,
159 (first_pass) ? "" : ", ",
160 (char *) status_string.value,
162 gss_release_buffer(&min_stat, &status_string);
165 } while (!GSS_ERROR(maj_stat) && msg_ctx != 0);
166 err_msg = apr_pstrcat(r->pool, err_msg, ")", NULL);
172 get_gss_creds(request_rec *r,
173 gss_auth_config *conf,
174 gss_cred_id_t *server_creds)
176 gss_buffer_desc token = GSS_C_EMPTY_BUFFER;
177 OM_uint32 major_status, minor_status, minor_status2;
178 gss_name_t server_name = GSS_C_NO_NAME;
180 int have_server_princ;
182 if (conf->service_name && strcmp(conf->service_name, "Any") == 0) {
183 *server_creds = GSS_C_NO_CREDENTIAL;
187 have_server_princ = conf->service_name && strchr(conf->service_name, '/') != NULL;
188 if (have_server_princ)
189 strncpy(buf, conf->service_name, sizeof(buf));
191 snprintf(buf, sizeof(buf), "%s@%s",
192 (conf->service_name) ? conf->service_name : SERVICE_NAME,
193 ap_get_server_name(r));
196 token.length = strlen(buf) + 1;
198 major_status = gss_import_name(&minor_status, &token,
199 (have_server_princ) ? (gss_OID) GSS_KRB5_NT_PRINCIPAL_NAME : (gss_OID) GSS_C_NT_HOSTBASED_SERVICE,
201 memset(&token, 0, sizeof(token));
202 if (GSS_ERROR(major_status)) {
203 gss_log(APLOG_MARK, APLOG_ERR, 0, r,
204 "%s", get_gss_error(r, major_status, minor_status,
205 "gss_import_name() failed"));
206 return HTTP_INTERNAL_SERVER_ERROR;
209 major_status = gss_display_name(&minor_status, server_name, &token, NULL);
210 if (GSS_ERROR(major_status)) {
211 /* Perhaps we could just ignore this error but it's safer to give up now,
213 gss_log(APLOG_MARK, APLOG_ERR, 0, r,
214 "%s", get_gss_error(r, major_status, minor_status,
215 "gss_display_name() failed"));
216 return HTTP_INTERNAL_SERVER_ERROR;
219 gss_log(APLOG_MARK, APLOG_DEBUG, 0, r, "Acquiring creds for %s", token.value);
220 gss_release_buffer(&minor_status, &token);
222 major_status = gss_acquire_cred(&minor_status, server_name, GSS_C_INDEFINITE,
223 GSS_C_NO_OID_SET, GSS_C_ACCEPT,
224 server_creds, NULL, NULL);
225 gss_release_name(&minor_status2, &server_name);
226 if (GSS_ERROR(major_status)) {
227 gss_log(APLOG_MARK, APLOG_ERR, 0, r,
228 "%s", get_gss_error(r, major_status, minor_status,
229 "Failed to load GSS-API credentials"));
230 return HTTP_INTERNAL_SERVER_ERROR;
237 cmp_gss_type(gss_buffer_t token, gss_OID oid)
242 if (token->length == 0)
243 return GSS_S_DEFECTIVE_TOKEN;
247 return GSS_S_DEFECTIVE_TOKEN;
250 if ((len & 0x7f) > 4)
251 return GSS_S_DEFECTIVE_TOKEN;
255 return GSS_S_DEFECTIVE_TOKEN;
257 if (((OM_uint32) *p++) != oid->length)
258 return GSS_S_DEFECTIVE_TOKEN;
260 return memcmp(p, oid->elements, oid->length);