*/
/*
- * Copyright (c) 2004 Masarykova universita
+ * Copyright (c) 2004-2005 Masarykova universita
* (Masaryk University, Brno, Czech Republic)
* All rights reserved.
*
#include "config.h"
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdarg.h>
+
#define MODAUTHKERB_VERSION "5.0-rc6"
+#define MECH_NEGOTIATE "Negotiate"
#include <httpd.h>
#include <http_config.h>
#include <http_request.h>
#ifdef STANDARD20_MODULE_STUFF
-#include <ap_compat.h>
#include <apr_strings.h>
#include <apr_base64.h>
+
+#define ap_null_cleanup NULL
+#define ap_register_cleanup apr_pool_cleanup_register
+
+#define ap_pstrdup apr_pstrdup
+#define ap_pstrcat apr_pstrcat
+#define ap_pcalloc apr_pcalloc
+#define ap_psprintf apr_psprintf
+
+#define ap_base64decode_len apr_base64_decode_len
+#define ap_base64decode apr_base64_decode
+#define ap_base64encode_len apr_base64_encode_len
+#define ap_base64encode apr_base64_encode
+
+#define ap_table_setn apr_table_setn
+#define ap_table_add apr_table_add
+#else
+#define ap_pstrchr_c strchr
+#endif /* STANDARD20_MODULE_STUFF */
+
+#ifdef _WIN32
+#define vsnprintf _vsnprintf
+#define snprintf _snprintf
+#endif
+
+#ifndef KRB5_LIB_FUNCTION
+# if defined(_WIN32)
+# define KRB5_LIB_FUNCTION _stdcall
+# else
+# define KRB5_LIB_FUNCTION
#endif
#ifdef KRB5
#include <netdb.h> /* gethostbyname() */
#endif /* KRB4 */
-/* XXX remove dependency on unistd.h ??? */
+#ifndef _WIN32
+/* should be HAVE_UNISTD_H instead */
#include <unistd.h>
+#endif
#ifdef STANDARD20_MODULE_STUFF
module AP_MODULE_DECLARE_DATA auth_kerb_module;
int use_krb4, int use_krb5pwd, char *negotiate_ret_value);
static const char*
-krb5_save_realms(cmd_parms *cmd, kerb_auth_config *sec, char *arg);
+krb5_save_realms(cmd_parms *cmd, void *sec, const char *arg);
#ifdef STANDARD20_MODULE_STUFF
#define command(name, func, var, type, usage) \
- AP_INIT_ ## type (name, func, \
- (void*)APR_XtOffsetOf(kerb_auth_config, var), \
+ AP_INIT_ ## type (name, (void*) func, \
+ (void*)APR_OFFSETOF(kerb_auth_config, var), \
OR_AUTHCFG | RSRC_CONF, usage)
#else
#define command(name, func, var, type, usage) \
{ NULL }
};
+#ifdef _WIN32
+int
+mkstemp(char *template)
+{
+ int start, i;
+ pid_t val;
+ val = getpid();
+ start = strlen(template) - 1;
+ while(template[start] == 'X') {
+ template[start] = '0' + val % 10;
+ val /= 10;
+ start--;
+ }
+
+ do{
+ int fd;
+ fd = open(template, O_RDWR | O_CREAT | O_EXCL, 0600);
+ if(fd >= 0 || errno != EEXIST)
+ return fd;
+ i = start + 1;
+ do{
+ if(template[i] == 0)
+ return -1;
+ template[i]++;
+ if(template[i] == '9' + 1)
+ template[i] = 'a';
+ if(template[i] <= 'z')
+ break;
+ template[i] = 'a';
+ i++;
+ }while(1);
+ }while(1);
+}
+#endif
+
#if defined(KRB5) && !defined(HEIMDAL)
/* Needed to work around problems with replay caches */
#include "mit-internals.h"
/* This is our replacement krb5_rc_store function */
-static krb5_error_code
+static krb5_error_code KRB5_LIB_FUNCTION
mod_auth_kerb_rc_store(krb5_context context, krb5_rcache rcache,
krb5_donot_replay_internal *donot_replay)
{
}
static const char*
-krb5_save_realms(cmd_parms *cmd, kerb_auth_config *sec, char *arg)
+krb5_save_realms(cmd_parms *cmd, void *vsec, const char *arg)
{
+ kerb_auth_config *sec = (kerb_auth_config *) vsec;
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, ...)
+static void
+log_rerror(const char *file, int line, int level, int status,
+ const request_rec *r, const char *fmt, ...)
{
char errstr[1024];
va_list ap;
sent_name = ap_getword (r->pool, &sent_pw, ':');
/* do not allow user to override realm setting of server */
- if (strchr(sent_name, '@')) {
+ if (ap_strchr_c(sent_name, '@')) {
log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
"specifying realm in user name is prohibited");
return HTTP_UNAUTHORIZED;
* we had to use this call instead, which is only a bit modified version of
* krb5_verify_init_creds() */
static krb5_error_code
-verify_krb5_init_creds(krb5_context context, krb5_creds *creds,
+verify_krb5_init_creds(request_rec *r, krb5_context context, krb5_creds *creds,
krb5_principal ap_req_server, krb5_keytab ap_req_keytab)
{
krb5_error_code ret;
krb5_creds *new_creds = NULL;
krb5_auth_context auth_context = NULL;
krb5_keytab keytab = NULL;
+ char *server_name;
memset(&req, 0, sizeof(req));
keytab = ap_req_keytab;
ret = krb5_cc_resolve(context, "MEMORY:", &local_ccache);
- if (ret)
+ if (ret) {
+ log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
+ "krb5_cc_resolve() failed when verifying KDC");
return ret;
+ }
ret = krb5_cc_initialize(context, local_ccache, creds->client);
- if (ret)
+ if (ret) {
+ log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
+ "krb5_cc_initialize() failed when verifying KDC");
goto end;
+ }
ret = krb5_cc_store_cred (context, local_ccache, creds);
- if (ret)
+ if (ret) {
+ log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
+ "krb5_cc_initialize() failed when verifying KDC");
goto end;
+ }
+
+ ret = krb5_unparse_name(context, ap_req_server, &server_name);
+ if (ret) {
+ log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
+ "krb5_unparse_name() failed when verifying KDC");
+ goto end;
+ }
+ log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
+ "Trying to verify authenticity of KDC using principal %s", server_name);
+ free(server_name);
if (!krb5_principal_compare (context, ap_req_server, creds->server)) {
krb5_creds match_cred;
ret = krb5_get_credentials (context, 0, local_ccache,
&match_cred, &new_creds);
- if (ret)
+ if (ret) {
+ log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
+ "krb5_get_credentials() failed when verifying KDC");
goto end;
+ }
creds = new_creds;
}
ret = krb5_mk_req_extended (context, &auth_context, 0, NULL, creds, &req);
- if (ret)
+ if (ret) {
+ log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
+ "krb5_mk_req_extended() failed when verifying KDC");
goto end;
+ }
krb5_auth_con_free (context, auth_context);
auth_context = NULL;
ret = krb5_auth_con_init(context, &auth_context);
- if (ret)
+ if (ret) {
+ log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
+ "krb5_auth_con_init() failed when verifying KDC");
goto end;
+ }
/* use KRB5_AUTH_CONTEXT_DO_SEQUENCE to skip replay cache checks */
krb5_auth_con_setflags(context, auth_context, KRB5_AUTH_CONTEXT_DO_SEQUENCE);
ret = krb5_rd_req (context, &auth_context, &req, ap_req_server,
keytab, 0, NULL);
+ if (ret) {
+ log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
+ "krb5_rd_req() failed when verifying KDC");
+ goto end;
+ }
end:
#ifdef HEIMDAL
krb5_principal server = NULL;
krb5_error_code ret;
krb5_ccache ret_ccache = NULL;
+ char *name = NULL;
/* XXX error messages shouldn't be logged here (and in the while() loop in
* authenticate_user_krb5pwd() as weell), in order to avoid confusing log
memset(&creds, 0, sizeof(creds));
+ ret = krb5_unparse_name(context, principal, &name);
+ if (ret == 0) {
+ log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
+ "Trying to get TGT for user %s", name);
+ free(name);
+ }
+
ret = krb5_get_init_creds_password(context, &creds, principal,
(char *)password, NULL,
NULL, 0, NULL, NULL);
log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
"krb5_get_init_creds_password() failed: %s",
krb5_get_err_text(context, ret));
- return ret;
+ goto end;
}
ret = krb5_sname_to_principal(context, ap_get_server_name(r), service,
*/
if (krb_verify_kdc &&
- (ret = verify_krb5_init_creds(context, &creds, server, keytab))) {
+ (ret = verify_krb5_init_creds(r, context, &creds, server, keytab))) {
log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
"failed to verify krb5 credentials: %s",
krb5_get_err_text(context, ret));
}
-int authenticate_user_krb5pwd(request_rec *r,
- kerb_auth_config *conf,
- const char *auth_line)
+static int
+authenticate_user_krb5pwd(request_rec *r,
+ kerb_auth_config *conf,
+ const char *auth_line)
{
const char *sent_pw = NULL;
const char *sent_name = NULL;
const char *realms = NULL;
+ const char *realm = NULL;
krb5_context kcontext = NULL;
krb5_error_code code;
krb5_principal client = NULL;
int ret;
char *name = NULL;
int all_principals_unkown;
+ char *p = NULL;
code = krb5_init_context(&kcontext);
if (code) {
sent_pw = ap_pbase64decode(r->pool, auth_line);
sent_name = ap_getword (r->pool, &sent_pw, ':');
- /* do not allow user to override realm setting of server */
- if (strchr(sent_name, '@')) {
- log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
- "specifying realm in user name is prohibited");
- ret = HTTP_UNAUTHORIZED;
- goto end;
- }
if (sent_pw == NULL || *sent_pw == '\0') {
log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
if (conf->krb_5_keytab)
krb5_kt_resolve(kcontext, conf->krb_5_keytab, &keytab);
- all_principals_unkown = 1;
- realms = conf->krb_auth_realms;
- do {
- if (realms && (code = krb5_set_default_realm(kcontext,
- ap_getword_white(r->pool, &realms)))){
+ p = strchr(sent_name, '@');
+ if (p) {
+ *p++ = '\0';
+ if (conf->krb_auth_realms && !ap_find_token(r->pool, conf->krb_auth_realms, p)) {
log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
- "krb5_set_default_realm() failed: %s",
- krb5_get_err_text(kcontext, code));
- continue;
+ "Specified realm `%s' not allowed by configuration", p);
+ ret = HTTP_UNAUTHORIZED;
+ goto end;
}
+ }
+
+ realms = (p) ? p : conf->krb_auth_realms;
+ all_principals_unkown = 1;
+ do {
+ name = (char *) sent_name;
+ if (realms && (realm = ap_getword_white(r->pool, &realms)))
+ name = ap_psprintf(r->pool, "%s@%s", sent_name, realm);
if (client) {
krb5_free_principal(kcontext, client);
client = NULL;
}
- code = krb5_parse_name(kcontext, sent_name, &client);
+
+ code = krb5_parse_name(kcontext, name, &client);
if (code) {
log_rerror(APLOG_MARK, APLOG_ERR, 0, r,
"krb5_parse_name() failed: %s",
end:
log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
"kerb_authenticate_user_krb5pwd ret=%d user=%s authtype=%s",
- ret, (MK_USER)?MK_USER:"(NULL)", MK_AUTH_TYPE);
+ ret, (MK_USER)?MK_USER:"(NULL)", (MK_AUTH_TYPE)?MK_AUTH_TYPE:"(NULL)");
if (client)
krb5_free_principal(kcontext, client);
if (ccache)
int ret;
gss_name_t client_name = GSS_C_NO_NAME;
gss_cred_id_t delegated_cred = GSS_C_NO_CREDENTIAL;
- OM_uint32 (*accept_sec_token)();
+ OM_uint32 (KRB5_LIB_FUNCTION *accept_sec_token)
+ (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 *);
gss_OID_desc spnego_oid;
gss_ctx_id_t context = GSS_C_NO_CONTEXT;
gss_cred_id_t server_creds = GSS_C_NO_CREDENTIAL;
}
sprintf(ktname, "KRB5_KTNAME=%s", conf->krb_5_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);
*negotiate_ret_value = token;
log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r,
"GSS-API token of length %d bytes will be sent back",
- major_status, output_token.length);
+ output_token.length);
gss_release_buffer(&minor_status2, &output_token);
+ set_kerb_auth_headers(r, conf, 0, 0, *negotiate_ret_value);
}
if (GSS_ERROR(major_status)) {
goto end;
}
- MK_AUTH_TYPE = "Negotiate";
+ MK_AUTH_TYPE = MECH_NEGOTIATE;
MK_USER = ap_pstrdup(r->pool, output_token.value);
if (conf->krb_save_credentials && delegated_cred != GSS_C_NO_CREDENTIAL)
store_gss_creds(r, conf, (char *)output_token.value, delegated_cred);
- if (*negotiate_ret_value)
- set_kerb_auth_headers(r, conf, 0, 0, *negotiate_ret_value);
-
gss_release_buffer(&minor_status, &output_token);
ret = OK;
{
if (ap_is_initial_req(r) || MK_AUTH_TYPE == NULL)
return 0;
- if (strcmp(MK_AUTH_TYPE, "Negotiate") ||
+ if (strcmp(MK_AUTH_TYPE, MECH_NEGOTIATE) ||
(strcmp(MK_AUTH_TYPE, "Basic") && strchr(MK_USER, '@')))
return 1;
return 0;
* apache in the proxy mode should retain client's authN headers? */
#ifdef KRB5
if (negotiate_ret_value != NULL && conf->krb_method_gssapi) {
- negoauth_param = (*negotiate_ret_value == '\0') ? "Negotiate" :
- ap_pstrcat(r->pool, "Negotiate ", negotiate_ret_value, NULL);
+ negoauth_param = (*negotiate_ret_value == '\0') ? MECH_NEGOTIATE :
+ ap_pstrcat(r->pool, MECH_NEGOTIATE " ", negotiate_ret_value, NULL);
ap_table_add(r->err_headers_out, header_name, negoauth_param);
}
if ((use_krb5pwd && conf->krb_method_k5pass) || conf->krb_delegate_basic) {
#endif
}
-int kerb_authenticate_user(request_rec *r)
+static int
+kerb_authenticate_user(request_rec *r)
{
kerb_auth_config *conf =
(kerb_auth_config *) ap_get_module_config(r->per_dir_config,
#ifdef KRB5
if (use_krb5 && conf->krb_method_gssapi &&
- strcasecmp(auth_type, "Negotiate") == 0) {
+ strcasecmp(auth_type, MECH_NEGOTIATE) == 0) {
ret = authenticate_user_gss(r, conf, auth_line, &negotiate_ret_value);
} else if (use_krb5 && conf->krb_method_k5pass &&
strcasecmp(auth_type, "Basic") == 0) {
return OK;
}
-void kerb_register_hooks(apr_pool_t *p)
+static void
+kerb_register_hooks(apr_pool_t *p)
{
ap_hook_post_config(kerb_init_handler, NULL, NULL, APR_HOOK_MIDDLE);
ap_hook_check_user_id(kerb_authenticate_user, NULL, NULL, APR_HOOK_MIDDLE);
projects / mod_auth_kerb.cvs / .git / blobdiff