diff options
Diffstat (limited to 'authz')
| -rw-r--r-- | authz/Makefile.objs | 3 | ||||
| -rw-r--r-- | authz/pamacct.c | 148 | ||||
| -rw-r--r-- | authz/trace-events | 3 |
3 files changed, 154 insertions, 0 deletions
diff --git a/authz/Makefile.objs b/authz/Makefile.objs index 8351bf181d..ed7b273596 100644 --- a/authz/Makefile.objs +++ b/authz/Makefile.objs @@ -2,3 +2,6 @@ authz-obj-y += base.o authz-obj-y += simple.o authz-obj-y += list.o authz-obj-y += listfile.o +authz-obj-$(CONFIG_AUTH_PAM) += pamacct.o + +pamacct.o-libs = -lpam diff --git a/authz/pamacct.c b/authz/pamacct.c new file mode 100644 index 0000000000..5038358cdc --- /dev/null +++ b/authz/pamacct.c @@ -0,0 +1,148 @@ +/* + * QEMU PAM authorization driver + * + * Copyright (c) 2018 Red Hat, Inc. + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see <http://www.gnu.org/licenses/>. + * + */ + +#include "qemu/osdep.h" +#include "authz/pamacct.h" +#include "authz/trace.h" +#include "qom/object_interfaces.h" + +#include <security/pam_appl.h> + + +static bool qauthz_pam_is_allowed(QAuthZ *authz, + const char *identity, + Error **errp) +{ + QAuthZPAM *pauthz = QAUTHZ_PAM(authz); + const struct pam_conv pam_conversation = { 0 }; + pam_handle_t *pamh = NULL; + int ret; + + trace_qauthz_pam_check(authz, identity, pauthz->service); + ret = pam_start(pauthz->service, + identity, + &pam_conversation, + &pamh); + if (ret != PAM_SUCCESS) { + error_setg(errp, "Unable to start PAM transaction: %s", + pam_strerror(NULL, ret)); + return false; + } + + ret = pam_acct_mgmt(pamh, PAM_SILENT); + pam_end(pamh, ret); + if (ret != PAM_SUCCESS) { + error_setg(errp, "Unable to authorize user '%s': %s", + identity, pam_strerror(pamh, ret)); + return false; + } + + return true; +} + + +static void +qauthz_pam_prop_set_service(Object *obj, + const char *service, + Error **errp G_GNUC_UNUSED) +{ + QAuthZPAM *pauthz = QAUTHZ_PAM(obj); + + g_free(pauthz->service); + pauthz->service = g_strdup(service); +} + + +static char * +qauthz_pam_prop_get_service(Object *obj, + Error **errp G_GNUC_UNUSED) +{ + QAuthZPAM *pauthz = QAUTHZ_PAM(obj); + + return g_strdup(pauthz->service); +} + + +static void +qauthz_pam_complete(UserCreatable *uc, Error **errp) +{ +} + + +static void +qauthz_pam_finalize(Object *obj) +{ + QAuthZPAM *pauthz = QAUTHZ_PAM(obj); + + g_free(pauthz->service); +} + + +static void +qauthz_pam_class_init(ObjectClass *oc, void *data) +{ + UserCreatableClass *ucc = USER_CREATABLE_CLASS(oc); + QAuthZClass *authz = QAUTHZ_CLASS(oc); + + ucc->complete = qauthz_pam_complete; + authz->is_allowed = qauthz_pam_is_allowed; + + object_class_property_add_str(oc, "service", + qauthz_pam_prop_get_service, + qauthz_pam_prop_set_service, + NULL); +} + + +QAuthZPAM *qauthz_pam_new(const char *id, + const char *service, + Error **errp) +{ + return QAUTHZ_PAM( + object_new_with_props(TYPE_QAUTHZ_PAM, + object_get_objects_root(), + id, errp, + "service", service, + NULL)); +} + + +static const TypeInfo qauthz_pam_info = { + .parent = TYPE_QAUTHZ, + .name = TYPE_QAUTHZ_PAM, + .instance_size = sizeof(QAuthZPAM), + .instance_finalize = qauthz_pam_finalize, + .class_size = sizeof(QAuthZPAMClass), + .class_init = qauthz_pam_class_init, + .interfaces = (InterfaceInfo[]) { + { TYPE_USER_CREATABLE }, + { } + } +}; + + +static void +qauthz_pam_register_types(void) +{ + type_register_static(&qauthz_pam_info); +} + + +type_init(qauthz_pam_register_types); diff --git a/authz/trace-events b/authz/trace-events index fb65349a90..72c411927d 100644 --- a/authz/trace-events +++ b/authz/trace-events @@ -13,3 +13,6 @@ qauthz_list_default_policy(void *authz, const char *identity, int policy) "AuthZ # auth/listfile.c qauthz_list_file_load(void *authz, const char *filename) "AuthZ file %p load filename=%s" qauthz_list_file_refresh(void *authz, const char *filename, int success) "AuthZ file %p load filename=%s success=%d" + +# auth/pam.c +qauthz_pam_check(void *authz, const char *identity, const char *service) "AuthZ PAM %p identity=%s service=%s" |