#ifdef KRB5
#include <krb5.h>
#include <gssapi.h>
+#ifndef HEIMDAL
+#include <gssapi_generic.h>
+#define GSS_C_NT_USER_NAME gss_nt_user_name
+#define GSS_C_NT_HOSTBASED_SERVICE gss_nt_service_name
+#define krb5_get_err_text(context,code) error_message(code)
+#endif
#endif /* KRB5 */
#ifdef KRB4
#endif /* APXS1 */
-
-
/***************************************************************************
Auth Configuration Structure
***************************************************************************/
typedef struct {
char *krb_auth_realms;
- int krb_fail_status;
char *krb_force_instance;
int krb_save_credentials;
- char *krb_tmp_dir;
char *service_name;
- char *krb_lifetime;
#ifdef KRB5
char *krb_5_keytab;
- int krb_forwardable;
int krb_method_gssapi;
int krb_method_k5pass;
#endif
#endif
} kerb_auth_config;
+static const char*
+krb5_save_realms(cmd_parms *cmd, kerb_auth_config *sec, char *arg);
+
#ifdef APXS1
#define command(name, func, var, type, usage) \
{ name, func, \
#endif
static const command_rec kerb_auth_cmds[] = {
- command("KrbAuthRealm", ap_set_string_slot, krb_auth_realms,
- ITERATE, "Realms to attempt authentication against (can be multiple)."),
+ command("KrbAuthRealms", krb5_save_realms, krb_auth_realms,
+ RAW_ARGS, "Realms to attempt authentication against (can be multiple)."),
- command("KrbAuthRealms", ap_set_string_slot, krb_auth_realms,
- ITERATE, "Alias for KrbAuthRealm."),
-
-#if 0
- command("KrbFailStatus", kerb_set_fail_slot, krb_fail_status,
- TAKE1, "If auth fails, return status set here."),
-#endif
-
- command("KrbForceInstance", ap_set_string_slot, krb_force_instance,
- TAKE1, "Force authentication against an instance specified here."),
+ command("KrbAuthRealm", krb5_save_realms, krb_auth_realms,
+ RAW_ARGS, "Alias for KrbAuthRealms."),
command("KrbSaveCredentials", ap_set_flag_slot, krb_save_credentials,
FLAG, "Save and store credentials/tickets retrieved during auth."),
- command("KrbSaveTickets", ap_set_flag_slot, krb_save_credentials,
- FLAG, "Alias for KrbSaveCredentials."),
-
- command("KrbTmpdir", ap_set_string_slot, krb_tmp_dir,
- TAKE1, "Path to store ticket files and such in."),
-
command("KrbServiceName", ap_set_string_slot, service_name,
TAKE1, "Kerberos service name to be used by apache."),
-#if 0
- command("KrbLifetime", ap_set_string_slot, krb_lifetime,
- TAKE1, "Kerberos ticket lifetime."),
-#endif
-
#ifdef KRB5
command("Krb5Keytab", ap_set_file_slot, krb_5_keytab,
TAKE1, "Location of Kerberos V5 keytab file."),
- command("KrbForwardable", ap_set_flag_slot, krb_forwardable,
- FLAG, "Credentials retrieved will be flagged as forwardable."),
-
- command("KrbMethodGSSAPI", ap_set_flag_slot, krb_method_gssapi,
- FLAG, "Enable GSSAPI authentication."),
+ command("KrbMethodNegotiate", ap_set_flag_slot, krb_method_gssapi,
+ FLAG, "Enable Negotiate authentication method."),
command("KrbMethodK5Pass", ap_set_flag_slot, krb_method_k5pass,
FLAG, "Enable Kerberos V5 password authentication."),
kerb_auth_config *rec;
rec = (kerb_auth_config *) ap_pcalloc(p, sizeof(kerb_auth_config));
- ((kerb_auth_config *)rec)->krb_fail_status = HTTP_UNAUTHORIZED;
#ifdef KRB5
((kerb_auth_config *)rec)->krb_method_k5pass = 1;
((kerb_auth_config *)rec)->krb_method_gssapi = 1;
return rec;
}
+static const char*
+krb5_save_realms(cmd_parms *cmd, kerb_auth_config *sec, char *arg)
+{
+ sec->krb_auth_realms= ap_pstrdup(cmd->pool, arg);
+ return NULL;
+}
+
void log_rerror(const char *file, int line, int level, int status,
const request_rec *r, const char *fmt, ...)
{
#endif
}
-#if 0
-static const char *kerb_set_fail_slot(cmd_parms *cmd, void *struct_ptr,
- const char *arg)
-{
- int offset = (int) (long) cmd->info;
- if (!strncasecmp(arg, "unauthorized", 12))
- *(int *) ((char *)struct_ptr + offset) = HTTP_UNAUTHORIZED;
- else if (!strncasecmp(arg, "forbidden", 9))
- *(int *) ((char *)struct_ptr + offset) = HTTP_FORBIDDEN;
- else if (!strncasecmp(arg, "declined", 8))
- *(int *) ((char *)struct_ptr + offset) = DECLINED;
- else
- return "KrbAuthFailStatus must be Forbidden, Unauthorized, or Declined.";
- return NULL;
-}
-#endif
-
#ifdef KRB4
/***************************************************************************
Username/Password Validation for Krb4
if (conf->krb_save_credentials) {
tfname = (char *)malloc(sizeof(char) * MAX_STRING_LEN);
- sprintf(tfname, "%s/k5cc_ap_%s",
- conf->krb_tmp_dir ? conf->krb_tmp_dir : "/tmp",
- MK_USER);
+ sprintf(tfname, "/tmp/k5cc_ap_%s", MK_USER);
if (!strcmp(instance, "")) {
tfname = strcat(tfname, ".");
tfname = strcat(tfname, realm);
}
- for (c = tfname + strlen(conf->krb_tmp_dir ? conf->krb_tmp_dir :
- "/tmp") + 1; *c; c++) {
+ for (c = tfname + strlen("/tmp") + 1; *c; c++) {
if (*c == '/')
*c = '.';
}
krb5_ccache ccache, const char *password, krb5_boolean secure,
const char *service)
{
- int ret;
- krb5_context kcontext;
- krb5_principal server, client;
- krb5_timestamp now;
- krb5_creds my_creds;
- krb5_flags options = 0;
- krb5_principal me = NULL;
- krb5_data tgtname = {
- 0,
- KRB5_TGS_NAME_SIZE,
- KRB5_TGS_NAME
- };
-
- memset((char *)&my_creds, 0, sizeof(my_creds));
- my_creds.client = principal;
-
- if (krb5_build_principal_ext(kcontext, &server,
- krb5_princ_realm(kcontext, me)->length,
- krb5_princ_realm(kcontext, me)->data,
- tgtname.length, tgtname.data,
- krb5_princ_realm(kcontext, me)->length,
- krb5_princ_realm(kcontext, me)->data,
- 0)) {
- return ret;
- }
+ krb5_creds creds;
+ krb5_principal server = NULL;
+ krb5_error_code ret;
+ krb5_verify_init_creds_opt opt;
- my_creds.server = server;
- if (krb5_timeofday(kcontext, &now))
- return -1;
+ memset(&creds, 0, sizeof(creds));
- my_creds.times.starttime = 0;
- /* XXX
- my_creds.times.endtime = now + lifetime;
- my_creds.times.renew_till = now + renewal;
- */
+ ret = krb5_get_init_creds_password(context, &creds, principal,
+ (char *)password, krb5_prompter_posix,
+ NULL, 0, NULL, NULL);
+ if (ret)
+ return ret;
- ret = krb5_get_in_tkt_with_password(kcontext, options, 0, NULL, 0,
- password, ccache, &my_creds, 0);
- if (ret) {
- return ret;
+ ret = krb5_sname_to_principal(context, NULL, service,
+ KRB5_NT_SRV_HST, &server);
+ if (ret)
+ goto end;
+
+ krb5_verify_init_creds_opt_init(&opt);
+ krb5_verify_init_creds_opt_set_ap_req_nofail(&opt, secure);
+
+ ret = krb5_verify_init_creds(context, &creds, server, NULL, NULL, &opt);
+ if (ret)
+ goto end;
+
+ if (ccache) {
+ ret = krb5_cc_initialize(context, ccache, principal);
+ if (ret == 0)
+ ret = krb5_cc_store_cred(context, ccache, &creds);
}
- return 0;
+end:
+ krb5_free_cred_contents(context, &creds);
+ if (server)
+ krb5_free_principal(context, server);
+ return ret;
}
#endif
krb5_principal princ,
krb5_ccache *ccache)
{
- char *c, ccname[MAX_STRING_LEN];
- krb5_error_code problem;
- int ret;
- krb5_ccache tmp_ccache = NULL;
-
- snprintf(ccname, sizeof(ccname), "FILE:%s/k5cc_ap_%s",
- conf->krb_tmp_dir ? conf->krb_tmp_dir : "/tmp",
- MK_USER);
+ char *ccname;
+ krb5_error_code problem;
+ int ret;
+ krb5_ccache tmp_ccache = NULL;
- for (c = ccname + strlen(conf->krb_tmp_dir ? conf->krb_tmp_dir :
- "/tmp") + 1; *c; c++) {
- if (*c == '/')
- *c = '.';
- }
+#ifdef HEIMDAL
+ problem = krb5_cc_gen_new(kcontext, &krb5_fcc_ops, &tmp_ccache);
+#else
+ problem = krb5_fcc_generate_new(kcontext, &tmp_ccache);
+ /* krb5_fcc_generate_new() doesn't set KRB5_TC_OPENCLOSE, which makes
+ krb5_cc_initialize() fail */
+ krb5_fcc_set_flags(kcontext, tmp_ccache, KRB5_TC_OPENCLOSE);
+#endif
+ if (problem) {
+ log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
+ "Cannot create file for new krb5 ccache: %s",
+ krb5_get_err_text(kcontext, problem));
+ ret = HTTP_INTERNAL_SERVER_ERROR;
+ goto end;
+ }
- problem = krb5_cc_resolve(kcontext, ccname, &tmp_ccache);
- if (problem) {
- log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
- "Cannot create krb5 ccache: krb5_cc_resolve() failed: %s",
- krb5_get_err_text(kcontext, problem));
- ret = HTTP_INTERNAL_SERVER_ERROR;
- goto end;
- }
+ ccname = ap_pstrdup(r->pool, krb5_cc_get_name(kcontext, tmp_ccache));
- problem = krb5_cc_initialize(kcontext, tmp_ccache, princ);
- if (problem) {
- log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
- "Cannot create krb5 ccache: krb5_cc_initialize() failed: %s",
- krb5_get_err_text(kcontext, problem));
- ret = HTTP_INTERNAL_SERVER_ERROR;
- goto end;
- }
+ problem = krb5_cc_initialize(kcontext, tmp_ccache, princ);
+ if (problem) {
+ log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
+ "Cannot initialize krb5 ccache %s: krb5_cc_initialize() failed: %s",
+ ccname, krb5_get_err_text(kcontext, problem));
+ ret = HTTP_INTERNAL_SERVER_ERROR;
+ goto end;
+ }
- ap_table_setn(r->subprocess_env, "KRB5CCNAME", ccname);
- ap_register_cleanup(r->pool, ccname,
- krb5_cache_cleanup, ap_null_cleanup);
+ ap_table_setn(r->subprocess_env, "KRB5CCNAME", ccname);
+ ap_register_cleanup(r->pool, ccname,
+ krb5_cache_cleanup, ap_null_cleanup);
- *ccache = tmp_ccache;
- tmp_ccache = NULL;
+ *ccache = tmp_ccache;
+ tmp_ccache = NULL;
- ret = OK;
+ ret = OK;
end:
- if (tmp_ccache)
- krb5_cc_destroy(kcontext, tmp_ccache);
+ if (tmp_ccache)
+ krb5_cc_destroy(kcontext, tmp_ccache);
- return ret;
+ return ret;
}
static int
return ret;
}
+#ifdef HEIMDAL
problem = krb5_cc_copy_cache(kcontext, delegated_cred, ccache);
+#else
+ problem = krb5_cc_copy_creds(kcontext, delegated_cred, ccache);
+#endif
krb5_free_principal(kcontext, princ);
if (problem) {
- snprintf(errstr, sizeof(errstr), "krb5_cc_copy_cache() failed: %s",
+ snprintf(errstr, sizeof(errstr), "Failed to store credentials: %s",
krb5_get_err_text(kcontext, problem));
krb5_cc_destroy(kcontext, ccache);
return HTTP_INTERNAL_SERVER_ERROR;
const char *auth_line)
{
const char *sent_pw = NULL;
+ const char *sent_name = NULL;
const char *realms = NULL;
+ const char *service_name = NULL;
krb5_context kcontext = NULL;
krb5_error_code code;
krb5_principal client = NULL;
krb5_ccache ccache = NULL;
int ret;
+ char *name = NULL;
code = krb5_init_context(&kcontext);
if (code) {
}
sent_pw = ap_pbase64decode(r->pool, auth_line);
- MK_USER = ap_getword (r->pool, &sent_pw, ':');
- MK_AUTH_TYPE = "Basic";
-
+ sent_name = ap_getword (r->pool, &sent_pw, ':');
/* do not allow user to override realm setting of server */
- if (strchr(MK_USER, '@')) {
+ if (strchr(sent_name, '@')) {
log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
"specifying realm in user name is prohibited");
ret = HTTP_UNAUTHORIZED;
}
if (conf->krb_5_keytab)
- /* setenv("KRB5_KTNAME", conf->krb_5_keytab, 1); */
- kcontext->default_keytab = conf->krb_5_keytab;
+ setenv("KRB5_KTNAME", conf->krb_5_keytab, 1);
+ /* kcontext->default_keytab = conf->krb_5_keytab; */
+
+ if (conf->service_name) {
+ char *p;
+ service_name = ap_pstrdup(r->pool, conf->service_name);
+ if ((p=strchr(service_name, '/')))
+ *p = '\0';
+ } else
+ service_name = "khttp";
realms = conf->krb_auth_realms;
do {
ap_getword_white(r->pool, &realms))))
continue;
-#if 0
- code = krb5_parse_name(kcontext, MK_USER, &client);
-#else
- code = krb5_parse_name(kcontext, "kouril", &client);
-#endif
+ if (client) {
+ krb5_free_principal(kcontext, client);
+ client = NULL;
+ }
+ code = krb5_parse_name(kcontext, sent_name, &client);
if (code)
continue;
code = krb5_verify_user(kcontext, client, ccache, sent_pw, 1,
- (conf->service_name) ? conf->service_name : "khttp");
- krb5_free_principal(kcontext, client);
+ service_name);
if (code == 0)
break;
goto end;
}
- if (conf->krb_save_credentials) {
- ret = store_krb5_creds(kcontext, r, conf, ccache);
- if (ret) /* Ignore error ?? */
- goto end;
+ code = krb5_unparse_name(kcontext, client, &name);
+ if (code) {
+ log_rerror(APLOG_MARK, APLOG_ERR, 0, r, "krb5_unparse_name() failed: %s",
+ krb5_get_err_text(kcontext, code));
+ ret = HTTP_UNAUTHORIZED;
+ goto end;
}
+ MK_USER = ap_pstrdup (r->pool, name);
+ MK_AUTH_TYPE = "Basic";
+ free(name);
+
+ if (conf->krb_save_credentials)
+ store_krb5_creds(kcontext, r, conf, ccache);
ret = OK;
if (gss_conn->server_creds != GSS_C_NO_CREDENTIAL)
gss_release_cred(&minor_status, &gss_conn->server_creds);
+ gss_connection = NULL;
+
return OK;
}
int ret;
gss_name_t client_name = GSS_C_NO_NAME;
gss_cred_id_t delegated_cred = GSS_C_NO_CREDENTIAL;
+ static int initial_return = HTTP_UNAUTHORIZED;
+
+ /* needed to work around replay caches */
+ if (!ap_is_initial_req(r))
+ return initial_return;
+ initial_return = HTTP_UNAUTHORIZED;
if (gss_connection == NULL) {
gss_connection = ap_pcalloc(r->connection->pool, sizeof(*gss_connection));
goto end;
}
- major_status = gss_export_name(&minor_status, client_name, &output_token);
+ major_status = gss_display_name(&minor_status, client_name, &output_token, NULL);
gss_release_name(&minor_status, &client_name);
if (GSS_ERROR(major_status)) {
log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
gss_release_buffer(&minor_status, &output_token);
-
#if 0
/* If the user comes from a realm specified by configuration don't include
its realm name in the username so that the authorization routine could
if (client_name != GSS_C_NO_NAME)
gss_release_name(&minor_status, &client_name);
+ cleanup_gss_connection(gss_connection);
+
+ initial_return = ret;
return ret;
}
#endif /* KRB5 */
static void
-note_kerb_auth_failure(request_rec *r, const kerb_auth_config *conf)
+note_kerb_auth_failure(request_rec *r, const kerb_auth_config *conf,
+ int use_krb4, int use_krb5)
{
const char *auth_name = NULL;
+ int set_basic = 0;
/* get the user realm specified in .htaccess */
auth_name = ap_auth_name(r);
- /* XXX check AuthType */
-
/* XXX should the WWW-Authenticate header be cleared first? */
#ifdef KRB5
- if (conf->krb_method_gssapi)
+ if (use_krb5 && conf->krb_method_gssapi)
ap_table_add(r->err_headers_out, "WWW-Authenticate", "GSS-Negotiate ");
- if (conf->krb_method_k5pass)
+ if (use_krb5 && conf->krb_method_k5pass) {
ap_table_add(r->err_headers_out, "WWW-Authenticate",
ap_pstrcat(r->pool, "Basic realm=\"", auth_name, "\"", NULL));
+ set_basic = 1;
+ }
#endif
#ifdef KRB4
- if (conf->krb_method_k4pass)
+ if (use_krb4 && conf->krb_method_k4pass && !set_basic)
ap_table_add(r->err_headers_out, "WWW-Authenticate",
ap_pstrcat(r->pool, "Basic realm=\"", auth_name, "\"", NULL));
#endif
use_krb5 = use_krb4 = 1;
else if(type && strcasecmp(type, "KerberosV5") == 0)
use_krb4 = 0;
- else if (type && strcasecmp(type, "KerberosV4") == 0)
+ else if(type && strcasecmp(type, "KerberosV4") == 0)
use_krb5 = 0;
else
return DECLINED;
/* get what the user sent us in the HTTP header */
auth_line = MK_TABLE_GET(r->headers_in, "Authorization");
if (!auth_line) {
- note_kerb_auth_failure(r, conf);
+ note_kerb_auth_failure(r, conf, use_krb4, use_krb5);
return HTTP_UNAUTHORIZED;
}
auth_type = ap_getword_white(r->pool, &auth_line);
#endif
if (ret == HTTP_UNAUTHORIZED)
- note_kerb_auth_failure(r, conf);
+ note_kerb_auth_failure(r, conf, use_krb4, use_krb5);
return ret;
}
projects / mod_auth_kerb.cvs / .git / blobdiff