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krb5.c
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/**
* Copyright (c) 2008 Moritz Bechler
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
**/
/* CHANGELOG (more recent on top)
*
* 2010-05-27 Mark Seecof add getPrincipal(), getRealm(), getLifetime(),
* renew(), getTktAttrs() methods; support more
* options to initKeytab/Password(); check only
* primary TGT in isValid(); fix some bugs.
*
* 2010-04-11 Moritz Bechler RC2 release
*/
#include "config.h"
#include "php_krb5.h"
#include "ext/standard/info.h"
#include "ext/standard/base64.h"
#include <sys/time.h>
#include <arpa/inet.h>
#ifdef HAVE_KADM5
#include "kdb.h"
#endif
zend_class_entry *krb5_ce_ccache;
/* Class definition */
ZEND_BEGIN_ARG_INFO_EX(arginfo_KRB5CCache_none, 0, 0, 0)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_KRB5CCache_initPassword, 0, 0, 2)
ZEND_ARG_INFO(0, principal)
ZEND_ARG_INFO(0, pass)
ZEND_ARG_ARRAY_INFO(0, options, 0)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_KRB5CCache_initKeytab, 0, 0, 2)
ZEND_ARG_INFO(0, principal)
ZEND_ARG_INFO(0, keytab)
ZEND_ARG_ARRAY_INFO(0, options, 0)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_KRB5CCache_changePassword, 0, 0, 3)
ZEND_ARG_INFO(0, principal)
ZEND_ARG_INFO(0, oldpass)
ZEND_ARG_INFO(0, newpass)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_KRB5CCache_open, 0, 0, 1)
ZEND_ARG_INFO(0, src)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_KRB5CCache_save, 0, 0, 1)
ZEND_ARG_INFO(0, dest)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_KRB5CCache_isValid, 0, 0, 0)
ZEND_ARG_INFO(0, timeRemain)
ZEND_END_ARG_INFO()
ZEND_BEGIN_ARG_INFO_EX(arginfo_KRB5CCache_getTktAttrs, 0, 0, 0)
ZEND_ARG_INFO(0, prefix)
ZEND_END_ARG_INFO()
PHP_METHOD(KRB5CCache, initPassword);
PHP_METHOD(KRB5CCache, initKeytab);
PHP_METHOD(KRB5CCache, changePassword);
PHP_METHOD(KRB5CCache, getName);
PHP_METHOD(KRB5CCache, getPrincipal);
PHP_METHOD(KRB5CCache, getRealm);
PHP_METHOD(KRB5CCache, getLifetime);
PHP_METHOD(KRB5CCache, getEntries);
PHP_METHOD(KRB5CCache, open);
PHP_METHOD(KRB5CCache, save);
PHP_METHOD(KRB5CCache, isValid);
PHP_METHOD(KRB5CCache, getTktAttrs);
PHP_METHOD(KRB5CCache, renew);
PHP_METHOD(KRB5CCache, getExpirationTime);
static zend_function_entry krb5_ccache_functions[] = {
PHP_ME(KRB5CCache, initPassword, arginfo_KRB5CCache_initPassword, ZEND_ACC_PUBLIC)
PHP_ME(KRB5CCache, initKeytab, arginfo_KRB5CCache_initKeytab, ZEND_ACC_PUBLIC)
PHP_ME(KRB5CCache, changePassword,arginfo_KRB5CCache_changePassword, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
PHP_ME(KRB5CCache, getName, arginfo_KRB5CCache_none, ZEND_ACC_PUBLIC)
PHP_ME(KRB5CCache, getPrincipal, arginfo_KRB5CCache_none, ZEND_ACC_PUBLIC)
PHP_ME(KRB5CCache, getRealm, arginfo_KRB5CCache_none, ZEND_ACC_PUBLIC)
PHP_ME(KRB5CCache, getLifetime, arginfo_KRB5CCache_none, ZEND_ACC_PUBLIC)
PHP_ME(KRB5CCache, getEntries, arginfo_KRB5CCache_none, ZEND_ACC_PUBLIC)
PHP_ME(KRB5CCache, open, arginfo_KRB5CCache_open, ZEND_ACC_PUBLIC)
PHP_ME(KRB5CCache, save, arginfo_KRB5CCache_save, ZEND_ACC_PUBLIC)
PHP_ME(KRB5CCache, isValid, arginfo_KRB5CCache_isValid, ZEND_ACC_PUBLIC)
PHP_ME(KRB5CCache, getTktAttrs, arginfo_KRB5CCache_getTktAttrs, ZEND_ACC_PUBLIC)
PHP_ME(KRB5CCache, renew, arginfo_KRB5CCache_none, ZEND_ACC_PUBLIC)
PHP_ME(KRB5CCache, getExpirationTime,arginfo_KRB5CCache_none, ZEND_ACC_PUBLIC)
PHP_FE_END
};
zend_module_entry krb5_module_entry = {
#if ZEND_MODULE_API_NO >= 20010901
STANDARD_MODULE_HEADER,
#endif
PHP_KRB5_EXT_NAME,
NULL,
PHP_MINIT(krb5),
PHP_MSHUTDOWN(krb5),
NULL,
NULL,
PHP_MINFO(krb5),
#if ZEND_MODULE_API_NO >= 20010901
PHP_KRB5_VERSION,
#endif
STANDARD_MODULE_PROPERTIES
};
#ifdef COMPILE_DL_KRB5
ZEND_GET_MODULE(krb5)
#endif
krb5_error_code php_krb5_display_error(krb5_context ctx, krb5_error_code code, char* str TSRMLS_DC);
/* Initialization functions */
zend_object_handlers krb5_ccache_handlers;
#if PHP_MAJOR_VERSION < 7
zend_object_value php_krb5_ticket_object_new( zend_class_entry *ce TSRMLS_DC);
#else
zend_object *php_krb5_ticket_object_new(zend_class_entry *ce TSRMLS_DC);
static void php_krb5_ccache_object_free(zend_object *obj TSRMLS_DC);
#endif
PHP_MINIT_FUNCTION(krb5)
{
zend_class_entry krb5_ccache;
INIT_CLASS_ENTRY(krb5_ccache, "KRB5CCache", krb5_ccache_functions);
krb5_ce_ccache = zend_register_internal_class(&krb5_ccache TSRMLS_CC);
krb5_ce_ccache->create_object = php_krb5_ticket_object_new;
memcpy(&krb5_ccache_handlers, zend_get_std_object_handlers(), sizeof(zend_object_handlers));
#if PHP_MAJOR_VERSION >= 7
krb5_ccache_handlers.offset = XtOffsetOf(krb5_ccache_object, std);
krb5_ccache_handlers.free_obj = php_krb5_ccache_object_free;
#endif
#ifdef HAVE_KADM5
if(php_krb5_kadm5_register_classes(TSRMLS_C) != SUCCESS) {
return FAILURE;
}
#endif
/* register constants */
REGISTER_LONG_CONSTANT("GSS_C_DELEG_FLAG", GSS_C_DELEG_FLAG, CONST_CS | CONST_PERSISTENT );
REGISTER_LONG_CONSTANT("GSS_C_MUTUAL_FLAG", GSS_C_MUTUAL_FLAG, CONST_CS | CONST_PERSISTENT );
REGISTER_LONG_CONSTANT("GSS_C_REPLAY_FLAG", GSS_C_REPLAY_FLAG, CONST_CS | CONST_PERSISTENT );
REGISTER_LONG_CONSTANT("GSS_C_SEQUENCE_FLAG", GSS_C_SEQUENCE_FLAG, CONST_CS | CONST_PERSISTENT );
REGISTER_LONG_CONSTANT("GSS_C_CONF_FLAG", GSS_C_CONF_FLAG, CONST_CS | CONST_PERSISTENT );
REGISTER_LONG_CONSTANT("GSS_C_INTEG_FLAG", GSS_C_INTEG_FLAG, CONST_CS | CONST_PERSISTENT );
REGISTER_LONG_CONSTANT("GSS_C_ANON_FLAG", GSS_C_ANON_FLAG, CONST_CS | CONST_PERSISTENT );
REGISTER_LONG_CONSTANT("GSS_C_PROT_READY_FLAG", GSS_C_PROT_READY_FLAG, CONST_CS | CONST_PERSISTENT );
REGISTER_LONG_CONSTANT("GSS_C_TRANS_FLAG", GSS_C_TRANS_FLAG, CONST_CS | CONST_PERSISTENT );
REGISTER_LONG_CONSTANT("GSS_C_BOTH", GSS_C_BOTH, CONST_CS | CONST_PERSISTENT );
REGISTER_LONG_CONSTANT("GSS_C_INITIATE", GSS_C_INITIATE, CONST_CS | CONST_PERSISTENT );
REGISTER_LONG_CONSTANT("GSS_C_ACCEPT", GSS_C_ACCEPT, CONST_CS | CONST_PERSISTENT );
REGISTER_LONG_CONSTANT("GSS_C_NO_NAME", 0, CONST_CS | CONST_PERSISTENT );
#ifdef KRB5_TL_DB_ARGS
REGISTER_LONG_CONSTANT("KRB5_TL_DB_ARGS", KRB5_TL_DB_ARGS, CONST_CS | CONST_PERSISTENT );
#endif
if(php_krb5_gssapi_register_classes(TSRMLS_C) != SUCCESS) {
return FAILURE;
}
if(php_krb5_negotiate_auth_register_classes(TSRMLS_C) != SUCCESS) {
return FAILURE;
}
return SUCCESS;
}
PHP_MSHUTDOWN_FUNCTION(krb5)
{
if(php_krb5_gssapi_shutdown(TSRMLS_C) != SUCCESS) {
return FAILURE;
}
return SUCCESS;
}
PHP_MINFO_FUNCTION(krb5)
{
php_info_print_table_start();
php_info_print_table_row(2, "Kerberos 5 support", "enabled");
php_info_print_table_row(2, "Extension version", PHP_KRB5_VERSION);
#ifdef HAVE_KRB5_MIT
php_info_print_table_row(2, "Kerberos library", "MIT");
#endif
#ifdef HAVE_KRB5_HEIMDAL
php_info_print_table_row(2, "Kerberos library", "Heimdal");
#endif
#ifdef KRB5_VERSION
php_info_print_table_row(2, "Library version", KRB5_VERSION);
#endif
#ifdef HAVE_KADM5
php_info_print_table_row(2, "KADM5 support", "yes");
#else
php_info_print_table_row(2, "KADM5 support", "no");
#endif
#if HAVE_GSS_KRB5_IMPORT_CRED
php_info_print_table_row(2, "Import cred support", "yes");
#else
php_info_print_table_row(2, "Import cred support", "no");
#endif
php_info_print_table_row(2, "GSSAPI/SPNEGO auth support", "yes");
php_info_print_table_end();
}
/* Constructors/Destructors */
/* {{{ */
#if PHP_MAJOR_VERSION < 7
static void php_krb5_ccache_object_dtor(void *obj, zend_object_handle handle TSRMLS_DC)
{
krb5_ccache_object *ticket = (krb5_ccache_object*)obj;
if(ticket) {
OBJECT_STD_DTOR(ticket->std);
krb5_cc_destroy(ticket->ctx, ticket->cc);
krb5_free_context(ticket->ctx);
if(ticket->keytab) {
efree(ticket->keytab);
}
efree(ticket);
}
}
#else
static void php_krb5_ccache_object_free(zend_object *obj TSRMLS_DC)
{
krb5_ccache_object *ticket = (krb5_ccache_object*)((char *)obj - XtOffsetOf(krb5_ccache_object, std));
krb5_cc_destroy(ticket->ctx, ticket->cc);
krb5_free_context(ticket->ctx);
if(ticket->keytab) {
efree(ticket->keytab);
}
zend_object_std_dtor(obj);
}
#endif
/* }}} */
/* {{{ */
#if PHP_MAJOR_VERSION < 7
zend_object_value php_krb5_ticket_object_new(zend_class_entry *ce TSRMLS_DC)
{
zend_object_value retval;
zend_object *failed;
krb5_ccache_object *object;
krb5_error_code ret = 0;
object = emalloc(sizeof(krb5_ccache_object));
memset(object, 0, sizeof(krb5_ccache_object));
/* intialize context */
if((ret = krb5_init_context(&object->ctx))) {
php_error_docref(NULL TSRMLS_CC, E_ERROR, "Cannot initialize Kerberos5 context");
efree(object);
return zend_objects_new(&failed, ce TSRMLS_CC);
}
// initialize random ccache
if((ret = krb5_cc_new_unique(object->ctx, "MEMORY", "", &object->cc))) {
const char *msg = krb5_get_error_message(object->ctx,ret);
php_error_docref(NULL TSRMLS_CC, E_ERROR, "Cannot open credential cache: %s", msg);
krb5_free_error_message(object->ctx, msg);
krb5_free_context(object->ctx);
efree(object);
return zend_objects_new(&failed, ce TSRMLS_CC);
}
INIT_STD_OBJECT(object->std, ce);
#if PHP_VERSION_ID < 50399
zend_hash_copy(object->std.properties, &ce->default_properties,
(copy_ctor_func_t) zval_add_ref, NULL,
sizeof(zval*));
#else
object_properties_init(&(object->std), ce);
#endif
retval.handle = zend_objects_store_put(object, php_krb5_ccache_object_dtor, NULL, NULL TSRMLS_CC);
retval.handlers = &krb5_ccache_handlers;
return retval;
}
#else
zend_object *php_krb5_ticket_object_new(zend_class_entry *ce TSRMLS_DC)
{
krb5_ccache_object *object;
krb5_error_code ret = 0;
object = ecalloc(1, sizeof(krb5_ccache_object) + zend_object_properties_size(ce));
/* intialize context */
if((ret = krb5_init_context(&object->ctx))) {
php_error_docref(NULL TSRMLS_CC, E_ERROR, "Cannot initialize Kerberos5 context");
efree(object);
return zend_objects_new(ce);
}
// initialize random ccache
if((ret = krb5_cc_new_unique(object->ctx, "MEMORY", "", &object->cc))) {
const char *msg = krb5_get_error_message(object->ctx,ret);
php_error_docref(NULL TSRMLS_CC, E_ERROR, "Cannot open credential cache: %s", msg);
krb5_free_error_message(object->ctx, msg);
krb5_free_context(object->ctx);
efree(object);
return zend_objects_new(ce);
}
zend_object_std_init(&object->std, ce TSRMLS_CC);
object_properties_init(&object->std, ce);
object->std.handlers = &krb5_ccache_handlers;
return &object->std;
}
#endif
/* }}} */
/* Helper functions */
/* {{{ Parse options array for initKeytab()/initPassword() */
static int php_krb5_parse_init_creds_opts(zval *opts, krb5_get_init_creds_opt *cred_opts, char **in_tkt_svc, char **vfy_keytab TSRMLS_DC)
{
int retval = 0;
zval *tmp = NULL;
zend_string *str = NULL;
if (Z_TYPE_P(opts) != IS_ARRAY) {
return KRB5KRB_ERR_GENERIC;
}
/* forwardable */
tmp = zend_compat_hash_find(HASH_OF(opts), "forwardable", sizeof("forwardable"));
if (tmp != NULL) {
krb5_get_init_creds_opt_set_forwardable(cred_opts, zval_is_true(tmp));
}
/* proxiable */
tmp = zend_compat_hash_find(HASH_OF(opts), "proxiable", sizeof("proxiable"));
if (tmp != NULL) {
krb5_get_init_creds_opt_set_proxiable(cred_opts, zval_is_true(tmp));
}
#ifdef KRB5_GET_INIT_CREDS_OPT_CANONICALIZE
/* canonicalize */
tmp = zend_compat_hash_find(HASH_OF(opts), "canonicalize", sizeof("canonicalize"));
if (tmp != NULL) {
krb5_get_init_creds_opt_set_canonicalize(cred_opts, zval_is_true(tmp));
}
#endif /* KRB5_GET_INIT_CREDS_OPT_CANONICALIZE */
/* tkt_life */
tmp = zend_compat_hash_find(HASH_OF(opts), "tkt_life", sizeof("tkt_life"));
if (tmp != NULL) {
krb5_get_init_creds_opt_set_tkt_life(cred_opts, zval_get_long(tmp TSRMLS_CC));
}
/* renew_life */
tmp = zend_compat_hash_find(HASH_OF(opts), "renew_life", sizeof("renew_life"));
if (tmp != NULL) {
krb5_get_init_creds_opt_set_renew_life(cred_opts, zval_get_long(tmp TSRMLS_CC));
}
/* service_name (krb5 arg "in_tkt_service") */
tmp = zend_compat_hash_find(HASH_OF(opts), "service_name", sizeof("service_name"));
if (tmp != NULL) {
str = zval_get_string(tmp TSRMLS_CC);
if ((*in_tkt_svc = emalloc(1+str->len))) {
strncpy(*in_tkt_svc, str->val, str->len);
(*in_tkt_svc)[str->len] = '\0';
}
zend_string_release(str);
}
/* verification keytab name */
tmp = zend_compat_hash_find(HASH_OF(opts), "verify_keytab", sizeof("verify_keytab"));
if (tmp != NULL) {
str = zval_get_string(tmp TSRMLS_CC);
if ((*vfy_keytab = emalloc(1+str->len))) {
strncpy(*vfy_keytab, str->val, str->len);
(*vfy_keytab)[str->len] = '\0';
}
zend_string_release(str);
}
return retval;
} /* }}} */
/* {{{ */
krb5_error_code php_krb5_display_error(krb5_context ctx, krb5_error_code code, char* str TSRMLS_DC) {
const char *errstr = krb5_get_error_message(ctx,code);
zend_throw_exception_ex(NULL, 0 TSRMLS_CC, str, errstr);
krb5_free_error_message(ctx, errstr);
return code;
}
/* }}} */
/* {{{ Copies one ccache to another*/
static krb5_error_code php_krb5_copy_ccache(krb5_context ctx, const krb5_ccache src, krb5_ccache dest TSRMLS_DC)
{
krb5_error_code retval = 0;
krb5_principal princ;
if((retval = krb5_cc_get_principal(ctx,src,&princ))) {
return php_krb5_display_error(ctx, retval, "Failed to retrieve principal from source ccache (%s)" TSRMLS_CC);
}
if((retval = krb5_cc_initialize(ctx,dest,princ))) {
krb5_free_principal(ctx, princ);
return php_krb5_display_error(ctx, retval, "Failed to initialize destination ccache (%s)" TSRMLS_CC);
}
krb5_free_principal(ctx, princ);
#ifdef HAVE_KRB5_HEIMDAL
if((retval = krb5_cc_copy_cache(ctx, src, dest))) {
return php_krb5_display_error(ctx, retval, "Cannot copy given credential cache (%s)" TSRMLS_CC);
}
#else
krb5_cc_cursor cursor;
if((retval = krb5_cc_start_seq_get(ctx,src,&cursor))) {
return retval;
}
krb5_creds creds;
while(krb5_cc_next_cred(ctx,src,&cursor,&creds) == 0) {
if((retval = krb5_cc_store_cred(ctx, dest,&creds))) {
krb5_cc_end_seq_get(ctx,src,&cursor);
return retval;
}
krb5_free_cred_contents(ctx, &creds);
}
krb5_cc_end_seq_get(ctx,src,&cursor);
#endif
return retval;
}
/* }}} */
/* {{{ extract realm string */
static char *php_krb5_get_realm(krb5_context ctx, krb5_principal princ TSRMLS_DC)
{
#ifdef HAVE_KRB5_PRINCIPAL_GET_REALM
return krb5_principal_get_realm(ctx, princ);
#else
krb5_data *data;
data = krb5_princ_realm(ctx, princ);
if ((data != NULL) && (data->data != NULL)) return data->data;
/* else */
return NULL;
#endif
}
/* }}} */
/* {{{ Get expiration times for primary TGT in cache */
static krb5_error_code php_krb5_get_tgt_expire(krb5_ccache_object *ccache, long *endtime, long *renew_until TSRMLS_DC)
{
krb5_error_code retval = 0;
char *errstr = NULL;
krb5_principal princ;
int have_princ = 0;
krb5_creds in_cred;
int have_in_cred = 0;
krb5_creds *credptr = NULL;
int have_credptr = 0;
char *realm;
do {
memset(&princ, 0, sizeof(princ));
if ((retval = krb5_cc_get_principal(ccache->ctx,ccache->cc, &princ))) {
errstr = "Failed to retrieve principal from source ccache (%s)";
break;
}
have_princ = 1;
if (!(realm = php_krb5_get_realm(ccache->ctx, princ TSRMLS_CC))) {
retval = KRB5KRB_ERR_GENERIC;
errstr = "Failed to extract realm from principal (%s)";
break;
}
memset(&in_cred, 0, sizeof(in_cred));
in_cred.client = princ;
if ((retval = krb5_build_principal(ccache->ctx, &in_cred.server, strlen(realm), realm, "krbtgt", realm, NULL))) {
errstr = "Failed to build krbtgt principal (%s)";
break;
}
have_in_cred = 1;
if ((retval = krb5_get_credentials(ccache->ctx, KRB5_GC_CACHED, ccache->cc, &in_cred, &credptr))) {
errstr = "Failed to retrieve krbtgt ticket from cache (%s)";
break;
}
have_credptr = 1;
} while (0);
if (have_princ) krb5_free_principal(ccache->ctx, princ);
if (have_in_cred) krb5_free_principal(ccache->ctx, in_cred.server);
if (have_credptr) {
krb5_free_cred_contents(ccache->ctx, credptr);
*endtime = credptr->times.endtime;
*renew_until = credptr->times.renew_till;
free(credptr);
}
if (errstr != NULL) {
php_krb5_display_error(ccache->ctx, retval, errstr TSRMLS_CC);
}
return retval;
}
/* }}} */
/* {{{ verify a (client's) new TGT using keytab */
static krb5_error_code php_krb5_verify_tgt(krb5_ccache_object *ccache, krb5_creds *creds, char *vfy_keytab TSRMLS_DC)
{
krb5_error_code retval = 0;
krb5_error_code r2val;
krb5_keytab ktab;
int have_ktab = 0;
krb5_kt_cursor cursor;
int have_cursor = 0;
krb5_keytab_entry entry;
int have_entry = 0;
krb5_principal princ;
int have_princ = 0;
krb5_verify_init_creds_opt opts;
if (!vfy_keytab || !*vfy_keytab) {
return KRB5_KT_NOTFOUND;
}
do {
memset(&ktab, 0, sizeof(ktab));
if ((retval = krb5_kt_resolve(ccache->ctx, vfy_keytab, &ktab))) {
break;
}
have_ktab = 1;
memset(&cursor, 0, sizeof(cursor));
if ((retval = krb5_kt_start_seq_get(ccache->ctx, ktab, &cursor))) {
break;
}
have_cursor = 1;
memset(&entry, 0, sizeof(entry));
if ((retval = krb5_kt_next_entry(ccache->ctx, ktab, &entry, &cursor))) {
break;
}
have_entry = 1;
memset(&princ, 0, sizeof(princ));
if ((retval = krb5_copy_principal(ccache->ctx, entry.principal, &princ))) {
break;
}
have_princ = 1;
krb5_verify_init_creds_opt_init(&opts);
krb5_verify_init_creds_opt_set_ap_req_nofail(&opts, 1);
if ((retval = krb5_verify_init_creds(ccache->ctx, creds, princ, ktab, NULL, &opts))) {
break;
}
} while (0);
if (have_ktab && (r2val = krb5_kt_close(ccache->ctx, ktab))) {
php_krb5_display_error(ccache->ctx, r2val, "Failed to close keytab (%s)" TSRMLS_CC);
}
if (have_cursor && (r2val = krb5_kt_end_seq_get(ccache->ctx, ktab, &cursor))) {
php_krb5_display_error(ccache->ctx, r2val, "Failed to free keytab cursor (%s)" TSRMLS_CC);
}
if (have_entry &&
#ifdef HAVE_KRB5_HEIMDAL
(r2val = krb5_kt_free_entry(ccache->ctx, &entry))
#else
(r2val = krb5_free_keytab_entry_contents(ccache->ctx, &entry))
#endif
) {
php_krb5_display_error(ccache->ctx, r2val, "Failed to free keytab entry (%s)" TSRMLS_CC);
}
if (have_princ) krb5_free_principal(ccache->ctx, princ);
return retval;
}
/* }}} */
#ifdef HAVE_KRB5_GET_INIT_CREDS_OPT_SET_EXPIRE_CALLBACK
/* {{{ received and store password and account expiration times */
void expire_callback_func(krb5_context context, void *data, krb5_timestamp password_expiration, krb5_timestamp account_expiration, krb5_boolean is_last_req) {
krb5_ccache_object *ccache = (krb5_ccache_object *) data;
ccache->exp_received = TRUE;
ccache->exp_password = password_expiration;
ccache->exp_account = account_expiration;
ccache->exp_is_last_req = is_last_req;
}
#endif
/* }}} */
/* KRB5CCache Methods */
/* {{{ proto string KRB5CCache::getName( )
Gets the name/identifier of this credential cache */
PHP_METHOD(KRB5CCache, getName)
{
krb5_ccache_object *ccache = KRB5_THIS_CCACHE;
const char *tmpname = krb5_cc_get_name(ccache->ctx, ccache->cc);
const char *tmptype = krb5_cc_get_type(ccache->ctx, ccache->cc);
char *name = NULL;
if (zend_parse_parameters_none() == FAILURE) {
zend_throw_exception(NULL, "Failed to parse arglist", 0 TSRMLS_CC);
RETURN_FALSE;
}
name = emalloc(strlen(tmpname) + strlen(tmptype) + 2);
*name = 0;
strcat(name, tmptype);
strcat(name, ":");
strcat(name, tmpname);
_RETVAL_STRING(name);
efree(name);
}
/* }}} */
/* {{{ proto bool KRB5CCache::open( string $src )
Copies the contents of the credential cache given by $dest to this credential cache */
PHP_METHOD(KRB5CCache, open)
{
krb5_ccache_object *ccache = KRB5_THIS_CCACHE;
char *sccname = NULL;
strsize_t sccname_len = 0;
krb5_error_code retval = 0;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, ARG_PATH, &sccname, &sccname_len) == FAILURE) {
zend_throw_exception(NULL, "Failed to parse arglist", 0 TSRMLS_CC);
RETURN_FALSE;
}
krb5_ccache src;
if((retval = krb5_cc_resolve(ccache->ctx, sccname, &src))) {
php_krb5_display_error(ccache->ctx, retval, "Cannot open given credential cache (%s)" TSRMLS_CC);
RETURN_FALSE;
}
if((retval = php_krb5_copy_ccache(ccache->ctx, src, ccache->cc TSRMLS_CC))) {
krb5_cc_close(ccache->ctx, src);
php_krb5_display_error(ccache->ctx, retval, "Failed to copy credential cache (%s)" TSRMLS_CC);
RETURN_FALSE;
}
krb5_cc_close(ccache->ctx, src);
RETURN_TRUE;
}
/* }}} */
/* {{{ proto bool KRB5CCache::save( string $dest )
Copies the contents of this credential cache to the credential cache given by $dest */
PHP_METHOD(KRB5CCache, save)
{
krb5_ccache_object *ccache = KRB5_THIS_CCACHE;
char *sccname = NULL;
strsize_t sccname_len = 0;
krb5_error_code retval = 0;
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, ARG_PATH, &sccname, &sccname_len) == FAILURE) {
zend_throw_exception(NULL, "Failed to parse arglist", 0 TSRMLS_CC);
RETURN_FALSE;
}
krb5_ccache dest = NULL;
if((retval = krb5_cc_resolve(ccache->ctx, sccname, &dest))) {
php_krb5_display_error(ccache->ctx, retval, "Cannot open given credential cache (%s)" TSRMLS_CC);
RETURN_FALSE;
}
if((retval = php_krb5_copy_ccache(ccache->ctx, ccache->cc, dest TSRMLS_CC))) {
krb5_cc_close(ccache->ctx, dest);
php_krb5_display_error(ccache->ctx, retval, "Failed to copy credential cache (%s)" TSRMLS_CC);
RETURN_FALSE;
}
krb5_cc_close(ccache->ctx, dest);
RETURN_TRUE;
}
/* }}} */
/* {{{ proto bool KRB5CCache::initPassword( string $principal, string $pass [, array $options ])
Gets a TGT for the given principal using the given credentials */
PHP_METHOD(KRB5CCache, initPassword)
{
krb5_ccache_object *ccache = KRB5_THIS_CCACHE;
krb5_error_code retval = 0;
char *errstr = "";
char *sprinc = NULL;
strsize_t sprinc_len = 0;
char *spass = NULL;
strsize_t spass_len = 0;
zval *opts = NULL;
krb5_principal princ;
int have_princ = 0;
krb5_get_init_creds_opt *cred_opts;
int have_cred_opts = 0;
char *in_tkt_svc = NULL;
char *vfy_keytab = NULL;
krb5_creds creds;
int have_creds = 0;
#ifndef KRB5_GET_INIT_CREDS_OPT_CANONICALIZE
krb5_get_init_creds_opt cred_opts_struct;
cred_opts = &cred_opts_struct;
#endif
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "ss|a", &sprinc, &sprinc_len, &spass, &spass_len, &opts) == FAILURE) {
zend_throw_exception(NULL, "Failed to parse arglist", 0 TSRMLS_CC);
RETURN_FALSE;
}
do {
memset(&princ, 0, sizeof(princ));
if ((retval = krb5_parse_name(ccache->ctx, sprinc, &princ))) {
errstr = "Cannot parse Kerberos principal (%s)";
break;
}
have_princ = 1;
#ifdef KRB5_GET_INIT_CREDS_OPT_CANONICALIZE
if ((retval = krb5_get_init_creds_opt_alloc(ccache->ctx, &cred_opts))) {
errstr = "Cannot allocate cred_opts (%s)";
break;
}
#else
krb5_get_init_creds_opt_init(cred_opts);
#endif
have_cred_opts = 1;
if (opts != NULL) {
if ((retval = php_krb5_parse_init_creds_opts(opts, cred_opts, &in_tkt_svc, &vfy_keytab TSRMLS_CC))) {
errstr = "Cannot parse credential options (%s)";
break;
}
}
#ifdef HAVE_KRB5_GET_INIT_CREDS_OPT_SET_EXPIRE_CALLBACK
krb5_get_init_creds_opt_set_expire_callback(ccache->ctx,
cred_opts,
expire_callback_func,
ccache);
#endif
memset(&creds, 0, sizeof(creds));
if ((retval = krb5_get_init_creds_password(ccache->ctx, &creds, princ, spass, NULL, 0, 0, in_tkt_svc, cred_opts))) {
errstr = "Cannot get ticket (%s)";
break;
}
have_creds = 1;
if((retval = krb5_cc_initialize(ccache->ctx, ccache->cc, princ))) {
errstr = "Failed to initialize credential cache (%s)";
break;
}
if((retval = krb5_cc_store_cred(ccache->ctx, ccache->cc, &creds))) {
errstr = "Failed to store ticket in credential cache (%s)";
break;
}
if (vfy_keytab && *vfy_keytab && (retval = php_krb5_verify_tgt(ccache, &creds, vfy_keytab TSRMLS_CC))) {
errstr = "Failed to verify ticket (%s)";
break;
}
} while (0);
if (have_princ) krb5_free_principal(ccache->ctx, princ);
#ifdef KRB5_GET_INIT_CREDS_OPT_CANONICALIZE
if (have_cred_opts) krb5_get_init_creds_opt_free(ccache->ctx, cred_opts);
#endif
if (in_tkt_svc) efree(in_tkt_svc);
if (vfy_keytab) efree(vfy_keytab);
if (have_creds) krb5_free_cred_contents(ccache->ctx, &creds);
if (retval) {
php_krb5_display_error(ccache->ctx, retval, errstr TSRMLS_CC);
RETURN_FALSE;
}
RETURN_TRUE;
}
/* }}} */
/* {{{ proto bool KRB5CCache::initKeytab( string $principal, string $keytab_file [, array $options ])
Gets a TGT for the given principal using the credentials in the given keytab */
PHP_METHOD(KRB5CCache, initKeytab)
{
krb5_ccache_object *ccache = KRB5_THIS_CCACHE;
krb5_error_code retval = 0;
char *errstr = "";
char *sprinc = NULL;
strsize_t sprinc_len = 0;
char *skeytab = NULL;
strsize_t skeytab_len = 0;
zval *opts = NULL;
krb5_principal princ;
int have_princ = 0;
krb5_keytab keytab;
int have_keytab = 0;
krb5_get_init_creds_opt *cred_opts;
int have_cred_opts = 0;
char *in_tkt_svc = NULL;
char *vfy_keytab = NULL;
krb5_creds creds;
int have_creds = 0;
#ifndef KRB5_GET_INIT_CREDS_OPT_CANONICALIZE
krb5_get_init_creds_opt cred_opts_struct;
cred_opts = &cred_opts_struct;
#endif
if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s" ARG_PATH "|a", &sprinc, &sprinc_len, &skeytab, &skeytab_len, &opts) == FAILURE) {
zend_throw_exception(NULL, "Failed to parse arglist", 0 TSRMLS_CC);
RETURN_FALSE;
}
#if PHP_VERSION_ID < 50399
if ( (PG(safe_mode) &&
!php_checkuid(skeytab, NULL, CHECKUID_CHECK_FILE_AND_DIR)) ||
php_check_open_basedir(skeytab TSRMLS_CC)) {
RETURN_FALSE;
}
#else
if ( php_check_open_basedir(skeytab TSRMLS_CC)) {
RETURN_FALSE;
}
#endif
do {
memset(&princ, 0, sizeof(princ));
if ((retval = krb5_parse_name(ccache->ctx, sprinc, &princ))) {
errstr = "Cannot parse Kerberos principal (%s)";
break;
}
have_princ = 1;
memset(&keytab, 0, sizeof(keytab));
if ((retval = krb5_kt_resolve(ccache->ctx, skeytab, &keytab))) {
errstr = "Cannot load keytab (%s)";
break;
}
have_keytab = 1;
#ifdef KRB5_GET_INIT_CREDS_OPT_CANONICALIZE
if ((retval = krb5_get_init_creds_opt_alloc(ccache->ctx, &cred_opts))) {
errstr = "Cannot allocate cred_opts (%s)";
break;
}
#else
krb5_get_init_creds_opt_init(cred_opts);
#endif
have_cred_opts = 1;
if(opts) {
if ((retval = php_krb5_parse_init_creds_opts(opts, cred_opts, &in_tkt_svc, &vfy_keytab TSRMLS_CC))) {
errstr = "Cannot parse credential options";
break;
}
}
memset(&creds, 0, sizeof(creds));
if ((retval = krb5_get_init_creds_keytab(ccache->ctx, &creds, princ, keytab, 0, in_tkt_svc, cred_opts))) {
errstr = "Cannot get ticket (%s)";
break;
}
have_creds = 1;
if ((retval = krb5_cc_initialize(ccache->ctx, ccache->cc, princ))) {
errstr = "Failed to initialize credential cache (%s)";
break;
}
if((retval = krb5_cc_store_cred(ccache->ctx, ccache->cc, &creds))) {
errstr = "Failed to store ticket in credential cache (%s)";
break;
}
if (vfy_keytab && *vfy_keytab && (retval = php_krb5_verify_tgt(ccache, &creds, vfy_keytab TSRMLS_CC))) {
errstr = "Failed to verify ticket (%s)";
break;
}
} while (0);
if (have_princ) krb5_free_principal(ccache->ctx, princ);
if (have_keytab) krb5_kt_close(ccache->ctx, keytab);
#ifdef KRB5_GET_INIT_CREDS_OPT_CANONICALIZE
if (have_cred_opts) krb5_get_init_creds_opt_free(ccache->ctx, cred_opts);
#endif
if (in_tkt_svc) efree(in_tkt_svc);
if (vfy_keytab) efree(vfy_keytab);
if (have_creds) krb5_free_cred_contents(ccache->ctx, &creds);
if (retval) {
php_krb5_display_error(ccache->ctx, retval, errstr TSRMLS_CC);
RETURN_FALSE;
}
ccache->keytab = estrdup(skeytab);
RETURN_TRUE;
}
/* }}} */
/* {{{ proto string KRB5CCache::getPrincipal( )
Returns name of primary principal (client) associated with cache */
PHP_METHOD(KRB5CCache, getPrincipal)
{
krb5_ccache_object *ccache = KRB5_THIS_CCACHE;
krb5_error_code retval = 0;
krb5_principal princ;
char *princname = NULL;
if (zend_parse_parameters_none() == FAILURE) {
zend_throw_exception(NULL, "Failed to parse arglist", 0 TSRMLS_CC);
RETURN_FALSE;
}
memset(&princ, 0, sizeof(princ));
if ((retval = krb5_cc_get_principal(ccache->ctx, ccache->cc, &princ))) {
php_krb5_display_error(ccache->ctx, retval, "Failed to retrieve principal from source ccache (%s)" TSRMLS_CC);
RETURN_EMPTY_STRING();
}
if ((retval = krb5_unparse_name(ccache->ctx, princ, &princname))) {
krb5_free_principal(ccache->ctx,princ);
php_krb5_display_error(ccache->ctx, retval, "Failed to unparse principal name (%s)" TSRMLS_CC);
RETURN_EMPTY_STRING();