diff options
Diffstat (limited to 'server/responder/pam/pamsrv_dp.c')
| -rw-r--r-- | server/responder/pam/pamsrv_dp.c | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/server/responder/pam/pamsrv_dp.c b/server/responder/pam/pamsrv_dp.c new file mode 100644 index 00000000..8a10c6bd --- /dev/null +++ b/server/responder/pam/pamsrv_dp.c @@ -0,0 +1,215 @@ +/* + SSSD + + NSS Responder - Data Provider Interfaces + + Copyright (C) Simo Sorce <ssorce@redhat.com> 2008 + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 3 of the License, or + (at your option) any later version. + + This program 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 General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. +*/ + +#include <sys/time.h> +#include <time.h> + +#include <talloc.h> +#include <security/pam_modules.h> + +#include "util/util.h" +#include "responder/common/responder_packet.h" +#include "responder/nss/nsssrv.h" +#include "providers/data_provider.h" +#include "sbus/sbus_client.h" +#include "providers/dp_sbus.h" +#include "responder/pam/pamsrv.h" + +struct pam_reply_ctx { + struct cli_ctx *cctx; + pam_dp_callback_t callback; +}; + +static void pam_process_dp_reply(DBusPendingCall *pending, void *ptr) { + DBusError dbus_error; + DBusMessage* msg; + int ret; + int type; + dbus_uint32_t pam_status; + char *domain; + struct pam_reply_ctx *rctx; + + rctx = talloc_get_type(ptr, struct pam_reply_ctx); + + dbus_error_init(&dbus_error); + + dbus_pending_call_block(pending); + msg = dbus_pending_call_steal_reply(pending); + if (msg == NULL) { + DEBUG(0, ("Severe error. A reply callback was called but no reply was received and no timeout occurred\n")); + pam_status = PAM_SYSTEM_ERR; + goto done; + } + + + type = dbus_message_get_type(msg); + switch (type) { + case DBUS_MESSAGE_TYPE_METHOD_RETURN: + ret = dbus_message_get_args(msg, &dbus_error, + DBUS_TYPE_UINT32, &pam_status, + DBUS_TYPE_STRING, &domain, + DBUS_TYPE_INVALID); + if (!ret) { + DEBUG(0, ("Failed to parse reply.\n")); + pam_status = PAM_SYSTEM_ERR; + domain = ""; + goto done; + } + DEBUG(4, ("received: [%d][%s]\n", pam_status, domain)); + break; + case DBUS_MESSAGE_TYPE_ERROR: + DEBUG(0, ("Reply error.\n")); + pam_status = PAM_SYSTEM_ERR; + break; + default: + DEBUG(0, ("Default... what now?.\n")); + pam_status = PAM_SYSTEM_ERR; + } + + +done: + dbus_pending_call_unref(pending); + dbus_message_unref(msg); + rctx->callback(rctx->cctx, pam_status, domain); +} + +int pam_dp_send_req(struct cli_ctx *cctx, + pam_dp_callback_t callback, + int timeout, struct pam_data *pd) { + DBusMessage *msg; + DBusPendingCall *pending_reply; + DBusConnection *conn; + DBusError dbus_error; + dbus_bool_t ret; + struct pam_reply_ctx *rctx; + + rctx = talloc(cctx, struct pam_reply_ctx); + if (rctx == NULL) { + DEBUG(0,("Out of memory?!\n")); + return ENOMEM; + } + rctx->cctx=cctx; + rctx->callback=callback; + + if (pd->domain==NULL || + pd->user==NULL || + pd->service==NULL || + pd->tty==NULL || + pd->ruser==NULL || + pd->rhost==NULL ) { + return EINVAL; + } + + conn = sbus_get_connection(cctx->nctx->dp_ctx->scon_ctx); + dbus_error_init(&dbus_error); + + msg = dbus_message_new_method_call(NULL, + DP_CLI_PATH, + DP_CLI_INTERFACE, + DP_SRV_METHOD_PAMHANDLER); + if (msg == NULL) { + DEBUG(0,("Out of memory?!\n")); + return ENOMEM; + } + + + DEBUG(4, ("Sending request with the following data:\n")); + DEBUG_PAM_DATA(4, pd); + + ret = dbus_message_append_args(msg, + DBUS_TYPE_INT32, &(pd->cmd), + DBUS_TYPE_STRING, &(pd->domain), + DBUS_TYPE_STRING, &(pd->user), + DBUS_TYPE_STRING, &(pd->service), + DBUS_TYPE_STRING, &(pd->tty), + DBUS_TYPE_STRING, &(pd->ruser), + DBUS_TYPE_STRING, &(pd->rhost), + DBUS_TYPE_INT32, &(pd->authtok_type), + DBUS_TYPE_ARRAY, DBUS_TYPE_BYTE, + &(pd->authtok), pd->authtok_size, + DBUS_TYPE_INT32, &(pd->newauthtok_type), + DBUS_TYPE_ARRAY, DBUS_TYPE_BYTE, + &(pd->newauthtok), pd->newauthtok_size, + DBUS_TYPE_INVALID); + if (!ret) { + DEBUG(1,("Failed to build message\n")); + return EIO; + } + + ret = dbus_connection_send_with_reply(conn, msg, &pending_reply, timeout); + if (!ret) { + /* + * Critical Failure + * We can't communicate on this connection + * We'll drop it using the default destructor. + */ + DEBUG(0, ("D-BUS send failed.\n")); + dbus_message_unref(msg); + return EIO; + } + + dbus_pending_call_set_notify(pending_reply, pam_process_dp_reply, rctx, + NULL); + dbus_message_unref(msg); + + return EOK; +} + +static int pam_dp_identity(DBusMessage *message, struct sbus_conn_ctx *sconn) +{ + dbus_uint16_t version = DATA_PROVIDER_VERSION; + dbus_uint16_t clitype = DP_CLI_FRONTEND; + const char *cliname = "PAM"; + const char *nullname = ""; + DBusMessage *reply; + dbus_bool_t ret; + + DEBUG(4,("Sending ID reply: (%d,%d,%s)\n", clitype, version, cliname)); + + reply = dbus_message_new_method_return(message); + if (!reply) return ENOMEM; + + ret = dbus_message_append_args(reply, + DBUS_TYPE_UINT16, &clitype, + DBUS_TYPE_UINT16, &version, + DBUS_TYPE_STRING, &cliname, + DBUS_TYPE_STRING, &nullname, + DBUS_TYPE_INVALID); + if (!ret) { + dbus_message_unref(reply); + return EIO; + } + + /* send reply back */ + sbus_conn_send_reply(sconn, reply); + dbus_message_unref(reply); + + return EOK; +} + +struct sbus_method *register_pam_dp_methods(void) { + static struct sbus_method pam_dp_methods[] = { + { DP_CLI_METHOD_IDENTITY, pam_dp_identity }, + { NULL, NULL } + }; + + return pam_dp_methods; +} |