diff options
28 files changed, 2991 insertions, 176 deletions
diff --git a/server/Makefile.in b/server/Makefile.in index 1cde271ef..158202ca2 100644 --- a/server/Makefile.in +++ b/server/Makefile.in @@ -43,6 +43,16 @@ DBUS_CFLAGS = @DBUS_CFLAGS@ CHECK_LIBS = @CHECK_LIBS@ CHECK_CFLAGS = @CHECK_CFLAGS@ +PAM_LIBS = @PAM_LIBS@ + +OPENLDAP_LIBS = @OPENLDAP_LIBS@ + +MOZLDAP_CFLAGS = @MOZLDAP_CFLAGS@ +MOZLDAP_LIBS = @MOZLDAP_LIBS@ + +LDAP_CFLAGS = $(MOZLDAP_CFLAGS) $(OPENLDAP_CFLAGS) +LDAP_LIBS = $(MOZLDAP_LIBS) $(OPENLDAP_LIBS) + LIBDL = @LIBDL@ SHLIBEXT = @SHLIBEXT@ @@ -75,6 +85,10 @@ PROXY_BE_SOBASE=libsss_proxy.$(SHLIBEXT) PROXY_BE_SONAME=$(PROXY_BE_SOBASE).0 PROXY_BE_SOLIB=$(PROXY_BE_SOBASE).$(PACKAGE_VERSION) +LDAP_BE_SOBASE=libsss_ldap.$(SHLIBEXT) +LDAP_BE_SONAME=$(LDAP_BE_SOBASE).0 +LDAP_BE_SOLIB=$(LDAP_BE_SOBASE).$(PACKAGE_VERSION) + default: all include $(srvdir)/rules.mk @@ -86,7 +100,7 @@ headers = DBUS_SYSBUS_POLICY_DIR = @sysconfdir@/dbus-1/system.d -LIBEXECBINS = sbin/sssd_nss sbin/sssd_dp sbin/sssd_be +LIBEXECBINS = sbin/sssd_nss sbin/sssd_dp sbin/sssd_be sbin/sssd_pam ifneq (x$(HAVE_INFOPIPE), x) LIBEXECBINS += sbin/sssd_info DBUS_SYSBUS_POLICIES = infopipe/org.freeipa.sssd.infopipe.conf @@ -100,9 +114,9 @@ BINS = sbin/sssd $(LIBEXECBINS) TESTS = tests/sysdb-tests tests/infopipe-tests TESTS_DATA = tests/tests.ldb tests/tests_conf.ldb tests/introspect.ref -SOLIBS = lib/$(MEMBEROF_SOLIB) lib/$(PROXY_BE_SOLIB) -SONAMELIBS = lib/$(PROXY_BE_SONAME) lib/$(MEMBEROF_SONAME) -SOBASELIBS = lib/$(PROXY_BE_SOBASE) lib/$(MEMBEROF_SOBASE) +SOLIBS = lib/$(MEMBEROF_SOLIB) lib/$(PROXY_BE_SOLIB) lib/$(LDAP_BE_SOLIB) +SONAMELIBS = lib/$(PROXY_BE_SONAME) lib/$(MEMBEROF_SONAME) lib/$(LDAP_BE_SONAME) +SOBASELIBS = lib/$(PROXY_BE_SOBASE) lib/$(MEMBEROF_SOBASE) lib/$(LDAP_BE_SOBASE) DIRS = sbin lib @@ -158,6 +172,8 @@ endif ${INSTALLCMD} -m 755 $(SOLIBS) $(DESTDIR)$(SSSD_LIBDIR) ln -fs $(PROXY_BE_SOLIB) $(DESTDIR)$(SSSD_LIBDIR)/$(PROXY_BE_SONAME) ln -fs $(PROXY_BE_SOLIB) $(DESTDIR)$(SSSD_LIBDIR)/$(PROXY_BE_SOBASE) + ln -fs $(LDAP_BE_SOLIB) $(DESTDIR)$(SSSD_LIBDIR)/$(LDAP_BE_SONAME) + ln -fs $(LDAP_BE_SOLIB) $(DESTDIR)$(SSSD_LIBDIR)/$(LDAP_BE_SOBASE) ln -fs $(MEMBEROF_SOLIB) $(DESTDIR)$(SSSD_LIBDIR)/$(MEMBEROF_SONAME) ln -fs $(MEMBEROF_SOLIB) $(DESTDIR)$(SSSD_LIBDIR)/$(MEMBEROF_SOBASE) diff --git a/server/configure.ac b/server/configure.ac index b2f73b2e1..a06dfdab9 100644 --- a/server/configure.ac +++ b/server/configure.ac @@ -50,6 +50,8 @@ m4_include(libtalloc.m4) m4_include(libtdb.m4) m4_include(libevents.m4) m4_include(libldb.m4) +m4_include(pam.m4) +m4_include(ldap.m4) m4_include(util/signal.m4) PKG_CHECK_MODULES([DBUS],[dbus-1]) diff --git a/server/external/ldap.m4 b/server/external/ldap.m4 new file mode 100644 index 000000000..535c28908 --- /dev/null +++ b/server/external/ldap.m4 @@ -0,0 +1,51 @@ +dnl AC_SUBST(LDAP_LIBS) +dnl +dnl AC_CHECK_HEADERS(lber.h ldap.h, , AC_MSG_ERROR("could not locate ldap header files please install devel package")) +dnl +dnl AC_CHECK_LIB(lber, main, LDAP_LIBS="-llber $LDAP_LIBS") +dnl AC_CHECK_LIB(ldap, main, LDAP_LIBS="-lldap $LDAP_LIBS") +dnl +dnl --------------------------------------------------------------------------- +dnl - Check for Mozilla LDAP or OpenLDAP SDK +dnl --------------------------------------------------------------------------- + +AC_ARG_WITH(openldap, [ --with-openldap Use OpenLDAP]) + +if test x$with_openldap = xyes; then + AC_CHECK_LIB(ldap, ldap_search, with_ldap=yes) + dnl Check for other libraries we need to link with to get the main routines. + test "$with_ldap" != "yes" && { AC_CHECK_LIB(ldap, ldap_open, [with_ldap=yes with_ldap_lber=yes], , -llber) } + test "$with_ldap" != "yes" && { AC_CHECK_LIB(ldap, ldap_open, [with_ldap=yes with_ldap_lber=yes with_ldap_krb=yes], , -llber -lkrb) } + test "$with_ldap" != "yes" && { AC_CHECK_LIB(ldap, ldap_open, [with_ldap=yes with_ldap_lber=yes with_ldap_krb=yes with_ldap_des=yes], , -llber -lkrb -ldes) } + dnl Recently, we need -lber even though the main routines are elsewhere, + dnl because otherwise be get link errors w.r.t. ber_pvt_opt_on. So just + dnl check for that (it's a variable not a fun but that doesn't seem to + dnl matter in these checks) and stick in -lber if so. Can't hurt (even to + dnl stick it in always shouldn't hurt, I don't think) ... #### Someone who + dnl #### understands LDAP needs to fix this properly. + test "$with_ldap_lber" != "yes" && { AC_CHECK_LIB(lber, ber_pvt_opt_on, with_ldap_lber=yes) } + + if test "$with_ldap" = "yes"; then + if test "$with_ldap_des" = "yes" ; then + OPENLDAP_LIBS="${OPENLDAP_LIBS} -ldes" + fi + if test "$with_ldap_krb" = "yes" ; then + OPENLDAP_LIBS="${OPENLDAP_LIBS} -lkrb" + fi + if test "$with_ldap_lber" = "yes" ; then + OPENLDAP_LIBS="${OPENLDAP_LIBS} -llber" + fi + OPENLDAP_LIBS="${OPENLDAP_LIBS} -lldap" + else + AC_MSG_ERROR([OpenLDAP not found]) + fi + + AC_SUBST(OPENLDAP_LIBS) +else + PKG_CHECK_MODULES(MOZLDAP, mozldap > 6) + MOZLDAP_CFLAGS="${MOZLDAP_CFLAGS} -DWITH_MOZLDAP" + AC_SUBST(MOZLDAP_CFLAGS) + AC_SUBST(MOZLDAP_LIBS) +fi + + diff --git a/server/external/pam.m4 b/server/external/pam.m4 new file mode 100644 index 000000000..f99a2e69b --- /dev/null +++ b/server/external/pam.m4 @@ -0,0 +1,5 @@ +AC_SUBST(PAM_LIBS) + +AC_CHECK_HEADERS(security/pam_appl.h security/pam_misc.h security/pam_modules.h) + +AC_CHECK_LIB(pam, pam_get_item, [ PAM_LIBS="-lpam" ]) diff --git a/server/providers/data_provider.c b/server/providers/data_provider.c index c6dc8d124..a0e3b08d2 100644 --- a/server/providers/data_provider.c +++ b/server/providers/data_provider.c @@ -29,6 +29,8 @@ #include <string.h> #include <sys/time.h> #include <errno.h> +#include <security/pam_modules.h> + #include "popt.h" #include "util/util.h" #include "confdb/confdb.h" @@ -39,6 +41,7 @@ #include "dp_interfaces.h" #include "monitor/monitor_sbus.h" #include "monitor/monitor_interfaces.h" +#include "responder/pam/pamsrv.h" struct dp_backend; struct dp_frontend; @@ -88,9 +91,11 @@ struct sbus_method mon_sbus_methods[] = { }; static int dp_get_account_info(DBusMessage *message, struct sbus_conn_ctx *sconn); +static int dp_pamhandler(DBusMessage *message, struct sbus_conn_ctx *sconn); struct sbus_method dp_sbus_methods[] = { { DP_SRV_METHOD_GETACCTINFO, dp_get_account_info }, + { DP_SRV_METHOD_PAMHANDLER, dp_pamhandler }, { NULL, NULL } }; @@ -721,6 +726,275 @@ respond: return EOK; } +static void be_got_pam_reply(DBusPendingCall *pending, void *data) +{ + struct dp_be_request *bereq; + DBusMessage *reply; + DBusConnection *conn; + DBusError dbus_error; + dbus_bool_t ret; + uint32_t pam_status; + char *domain; + int type; + + bereq = talloc_get_type(data, struct dp_be_request); + dbus_error_init(&dbus_error); + + reply = dbus_pending_call_steal_reply(pending); + if (!reply) { + /* reply should never be null. This function shouldn't be called + * until reply is valid or timeout has occurred. If reply is NULL + * here, something is seriously wrong and we should bail out. + */ + DEBUG(0, ("Severe error. A reply callback was called but no reply was received and no timeout occurred\n")); + + /* Destroy this connection */ + sbus_disconnect(bereq->be->dpcli->conn_ctx); + goto done; + } + + type = dbus_message_get_type(reply); + switch (type) { + case DBUS_MESSAGE_TYPE_METHOD_RETURN: + ret = dbus_message_get_args(reply, &dbus_error, + DBUS_TYPE_UINT32, &pam_status, + DBUS_TYPE_STRING, &domain, + DBUS_TYPE_INVALID); + if (!ret) { + DEBUG(1,("Failed to parse message, killing connection\n")); + if (dbus_error_is_set(&dbus_error)) dbus_error_free(&dbus_error); + sbus_disconnect(bereq->be->dpcli->conn_ctx); + pam_status = PAM_SYSTEM_ERR; + domain = ""; + goto done; + } + + DEBUG(4, ("Got reply (%d, %s) from %s(%s)\n", pam_status, domain, + bereq->be->name, bereq->be->domain)); + + break; + + case DBUS_MESSAGE_TYPE_ERROR: + DEBUG(0,("The Data Provider returned an error [%s], closing connection.\n", + dbus_message_get_error_name(reply))); + /* Falling through to default intentionally*/ + default: + /* + * Timeout or other error occurred or something + * unexpected happened. + * It doesn't matter which, because either way we + * know that this connection isn't trustworthy. + * We'll destroy it now. + */ + DEBUG(1,("Maybe timeout?\n")); + sbus_disconnect(bereq->be->dpcli->conn_ctx); + goto done; + } + + conn = sbus_get_connection(bereq->req->src_cli->conn_ctx); + ret = dbus_message_append_args(bereq->req->reply, + DBUS_TYPE_UINT32, &pam_status, + DBUS_TYPE_STRING, &domain, + DBUS_TYPE_INVALID); + if (!ret) { + DEBUG(1, ("Failed to build reply ... frontend will wait for timeout ...\n")); + talloc_free(bereq->req); + goto done; + } + + /* finally send it */ + dbus_connection_send(conn, bereq->req->reply, NULL); + dbus_message_unref(bereq->req->reply); + talloc_free(bereq->req); + +done: + dbus_pending_call_unref(pending); + dbus_message_unref(reply); +} + +static int dp_call_pamhandler(struct dp_be_request *bereq, struct pam_data *pd) +{ + DBusMessage *msg; + DBusPendingCall *pending_reply; + DBusConnection *conn; + dbus_bool_t ret; + + conn = sbus_get_connection(bereq->be->dpcli->conn_ctx); + + /* create the message */ + msg = dbus_message_new_method_call(NULL, + DP_CLI_PATH, + DP_CLI_INTERFACE, + DP_CLI_METHOD_PAMHANDLER); + if (msg == NULL) { + DEBUG(0,("Out of memory?!\n")); + return ENOMEM; + } + + DEBUG(4, ("Sending request with to 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, + 600000 /* TODO: set 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; + } + + /* Set up the reply handler */ + dbus_pending_call_set_notify(pending_reply, be_got_pam_reply, + bereq, NULL); + dbus_message_unref(msg); + + return EOK; +} + +static int dp_pamhandler(DBusMessage *message, struct sbus_conn_ctx *sconn) +{ + DBusMessage *reply; + DBusError dbus_error; + struct dp_client *dpcli; + struct dp_backend *dpbe; + struct dp_be_request *bereq; + struct dp_request *dpreq = NULL; + dbus_bool_t dbret; + void *user_data; + int ret; + struct pam_data *pd; + int pam_status=PAM_SUCCESS; + int domain_found=0; + + user_data = sbus_conn_get_private_data(sconn); + if (!user_data) return EINVAL; + dpcli = talloc_get_type(user_data, struct dp_client); + if (!dpcli) return EINVAL; + +/* FIXME: free arrays returned by dbus_message_get_args() */ + pd = talloc(NULL, struct pam_data); + if (!pd) return ENOMEM; + + dbus_error_init(&dbus_error); + + ret = dbus_message_get_args(message, &dbus_error, + 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(0,("Failed, to parse message!\n")); + if (dbus_error_is_set(&dbus_error)) dbus_error_free(&dbus_error); + talloc_free(pd); + return EIO; + } + + DEBUG(4, ("Got the following data:\n")); + DEBUG_PAM_DATA(4, pd); + + reply = dbus_message_new_method_return(message); + if (!reply) { + DEBUG(0,("Out of memory?!\n")); + talloc_free(pd); + return ENOMEM; + } + + dpreq = talloc(dpcli->dpctx, struct dp_request); + if (!dpreq) { + ret = ENOMEM; + pam_status = PAM_ABORT; + goto respond; + } + + dpreq->reply = reply; + dpreq->src_cli = dpcli; + dpreq->pending_replies = 0; + /* FIXME: add handling of default domain */ + dpbe = dpcli->dpctx->be_list; + while (dpbe) { + DEBUG(4, ("Checking [%s][%s]\n", pd->domain, dpbe->domain)); + if (strcasecmp(dpbe->domain, pd->domain) == 0 ) { + domain_found=1; + bereq = talloc(dpreq, struct dp_be_request); + if (!bereq) { + DEBUG(1, ("Out of memory while sending requests\n")); + dpbe = dpbe->next; + continue; + } + bereq->req = dpreq; + bereq->be = dpbe; + DEBUG(4, ("Sending wildcard request to [%s]\n", dpbe->domain)); + ret = dp_call_pamhandler(bereq, pd); + if (ret != EOK) { + DEBUG(2,("Failed to dispatch request to %s\n", dpbe->domain)); + dpbe = dpbe->next; + continue; + } + dpreq->pending_replies++; + } + dpbe = dpbe->next; + } + + if (domain_found) { + talloc_free(pd); + return EOK; + } + + pam_status = PAM_MODULE_UNKNOWN; + +respond: + dbret = dbus_message_append_args(reply, + DBUS_TYPE_UINT32, &pam_status, + DBUS_TYPE_STRING, &(pd->domain), + DBUS_TYPE_INVALID); + if (!dbret) return EIO; + + /* send reply back immediately */ + sbus_conn_send_reply(sconn, reply); + dbus_message_unref(reply); + + talloc_free(pd); + return EOK; +} + static int dp_backend_destructor(void *ctx) { struct dp_backend *dpbe = talloc_get_type(ctx, struct dp_backend); diff --git a/server/providers/data_provider.h b/server/providers/data_provider.h index 5dc402efa..2d0e37e17 100644 --- a/server/providers/data_provider.h +++ b/server/providers/data_provider.h @@ -52,11 +52,17 @@ #define DP_CLI_FRONTEND 0x0002 #define DP_CLI_TYPE_MASK 0x0003 +#define DP_CLI_PROVIDE_ACC_INFO (1<<8) +#define DP_CLI_PROVIDE_PAM (1<<9) +#define DP_CLI_PROVIDE_POLICY (1<<10) + #define DP_CLI_METHOD_IDENTITY "getIdentity" #define DP_CLI_METHOD_ONLINE "getOnline" #define DP_CLI_METHOD_GETACCTINFO "getAccountInfo" +#define DP_CLI_METHOD_PAMHANDLER "pamHandler" #define DP_SRV_METHOD_GETACCTINFO "getAccountInfo" +#define DP_SRV_METHOD_PAMHANDLER "pamHandler" #define DP_ERR_OK 0 #define DP_ERR_OFFLINE 1 diff --git a/server/providers/data_provider_be.c b/server/providers/data_provider_be.c index 26a78efb2..9ed3d2ce6 100644 --- a/server/providers/data_provider_be.c +++ b/server/providers/data_provider_be.c @@ -29,6 +29,10 @@ #include <string.h> #include <sys/time.h> #include <errno.h> + +#include <security/pam_appl.h> +#include <security/pam_modules.h> + #include "popt.h" #include "util/util.h" #include "confdb/confdb.h" @@ -40,7 +44,7 @@ #include "providers/dp_sbus.h" #include "monitor/monitor_sbus.h" #include "monitor/monitor_interfaces.h" - +#include "../sss_client/sss_cli.h" typedef int (*be_init_fn_t)(TALLOC_CTX *, struct be_mod_ops **, void **); @@ -56,11 +60,13 @@ struct sbus_method mon_sbus_methods[] = { static int be_identity(DBusMessage *message, struct sbus_conn_ctx *sconn); static int be_check_online(DBusMessage *message, struct sbus_conn_ctx *sconn); static int be_get_account_info(DBusMessage *message, struct sbus_conn_ctx *sconn); +static int be_pam_handler(DBusMessage *message, struct sbus_conn_ctx *sconn); struct sbus_method be_methods[] = { { DP_CLI_METHOD_IDENTITY, be_identity }, { DP_CLI_METHOD_ONLINE, be_check_online }, { DP_CLI_METHOD_GETACCTINFO, be_get_account_info }, + { DP_CLI_METHOD_PAMHANDLER, be_pam_handler }, { NULL, NULL } }; @@ -503,8 +509,138 @@ done: return EOK; } +static void be_pam_handler_callback(struct be_req *req, int status, + const char *errstr) { + struct be_pam_handler *ph; + DBusMessage *reply; + DBusConnection *conn; + dbus_bool_t dbret; + + ph = talloc_get_type(req->req_data, struct be_pam_handler); + + DEBUG(4, ("Sending result [%d][%s]\n", ph->pam_status, ph->domain)); + reply = (DBusMessage *)req->pvt; + dbret = dbus_message_append_args(reply, + DBUS_TYPE_UINT32, &(ph->pam_status), + DBUS_TYPE_STRING, &(ph->domain), + DBUS_TYPE_INVALID); + if (!dbret) { + DEBUG(1, ("Failed to generate dbus reply\n")); + return; + } + + conn = sbus_get_connection(req->be_ctx->dp_ctx->scon_ctx); + dbus_connection_send(conn, reply, NULL); + dbus_message_unref(reply); + + DEBUG(4, ("Sent result [%d][%s]\n", ph->pam_status, ph->domain)); + + talloc_free(req); +} + +static int be_pam_handler(DBusMessage *message, struct sbus_conn_ctx *sconn) +{ + DBusError dbus_error; + DBusMessage *reply; + struct be_ctx *ctx; + struct be_pam_handler *req; + struct be_req *be_req; + dbus_bool_t ret; + void *user_data; + struct pam_data *pd; + uint32_t pam_status=99; + + user_data = sbus_conn_get_private_data(sconn); + if (!user_data) return EINVAL; + ctx = talloc_get_type(user_data, struct be_ctx); + if (!ctx) return EINVAL; + + pd = talloc(NULL, struct pam_data); + if (!pd) return ENOMEM; + + dbus_error_init(&dbus_error); + + reply = dbus_message_new_method_return(message); + if (!reply) { + DEBUG(1, ("dbus_message_new_method_return failed, cannot send reply.\n")); + talloc_free(pd); + return ENOMEM; + } + ret = dbus_message_get_args(message, &dbus_error, + 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 parse message!\n")); + talloc_free(pd); + return EIO; + } + + DEBUG(4, ("Got request with the following data\n")); + DEBUG_PAM_DATA(4, pd); + + be_req = talloc(ctx, struct be_req); + if (!be_req) { + pam_status = PAM_SYSTEM_ERR; + goto done; + } + be_req->be_ctx = ctx; + be_req->fn = be_pam_handler_callback; + be_req->pvt = reply; + + req = talloc(be_req, struct be_pam_handler); + if (!req) { + pam_status = PAM_SYSTEM_ERR; + goto done; + } + req->domain = ctx->domain; + req->pd = pd; + + be_req->req_data = req; + + ret = be_file_request(ctx, ctx->ops->pam_handler, be_req); + if (ret != EOK) { + pam_status = PAM_SYSTEM_ERR; + goto done; + } + + return EOK; + +done: + if (be_req) { + talloc_free(be_req); + } + + DEBUG(4, ("Sending result [%d][%s]\n", pam_status, ctx->domain)); + ret = dbus_message_append_args(reply, + DBUS_TYPE_UINT32, &pam_status, + DBUS_TYPE_STRING, &ctx->domain, + DBUS_TYPE_INVALID); + if (!ret) return EIO; + + /* send reply back immediately */ + sbus_conn_send_reply(sconn, reply); + dbus_message_unref(reply); + + talloc_free(pd); + return EOK; +} + /* mon_cli_init * sbus channel to the monitor daemon */ static int mon_cli_init(struct be_ctx *ctx) diff --git a/server/providers/dp_backend.h b/server/providers/dp_backend.h index 765c16ee7..cdd2c51b7 100644 --- a/server/providers/dp_backend.h +++ b/server/providers/dp_backend.h @@ -24,6 +24,7 @@ #include "providers/data_provider.h" #include "db/sysdb.h" +#include "responder/pam/pamsrv.h" struct be_mod_ops; @@ -64,11 +65,18 @@ struct be_online_req { int online; }; +struct be_pam_handler { + int pam_status; + const char *domain; + struct pam_data *pd; +}; + typedef void (*be_req_fn_t)(struct be_req *); struct be_mod_ops { be_req_fn_t check_online; be_req_fn_t get_account_info; + be_req_fn_t pam_handler; }; #endif /* __DP_BACKEND_H___ */ diff --git a/server/providers/ldap_be.c b/server/providers/ldap_be.c new file mode 100644 index 000000000..6c573b7d6 --- /dev/null +++ b/server/providers/ldap_be.c @@ -0,0 +1,676 @@ +/* + SSSD + + LDAP Backend Module + + Authors: + Sumit Bose <sbose@redhat.com> + + Copyright (C) 2008 Red Hat + + 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 <errno.h> +#include <ldap.h> +#include <sys/time.h> + +#include <security/pam_modules.h> + +#include "util/util.h" +#include "providers/dp_backend.h" +#include "db/sysdb.h" +#include "../sss_client/sss_cli.h" + +struct ldap_ctx { + char *ldap_uri; + char *default_bind_dn; + char *default_authtok_type; + uint32_t default_authtok_size; + char *default_authtok; +}; + +struct ldap_ops; +struct ldap_req; + +struct ldap_ops { + void (*op)(struct ldap_req *); + struct ldap_ops *next; +}; + +enum ldap_be_ops { + LDAP_NOOP = 0x0000, + LDAP_OP_INIT = 0x0001, + LDAP_CHECK_INIT_RESULT, + LDAP_CHECK_STD_BIND, + LDAP_CHECK_SEARCH_DN_RESULT, + LDAP_CHECK_USER_BIND +}; + +struct ldap_req { + struct be_req *req; + struct pam_data *pd; + struct ldap_ctx *ldap_ctx; + LDAP *ldap; + struct ldap_ops *ops; + char *user_dn; + /*event_timed_handler_t next_task;*/ + event_fd_handler_t next_task; + enum ldap_be_ops next_op; + int msgid; +}; + +static int schedule_next_task(struct ldap_req *lr, struct timeval tv, + event_timed_handler_t task) { + int ret; + struct timed_event *te; + struct timeval timeout; + + ret = gettimeofday(&timeout, NULL); + if (ret == -1) { + DEBUG(1, ("gettimeofday failed [%d][%s].\n", errno, strerror(errno))); + return ret; + } + timeout.tv_sec += tv.tv_sec; + timeout.tv_usec += tv.tv_usec; + + + te = event_add_timed(lr->req->be_ctx->ev, lr, timeout, task, lr); + if ( te == NULL ) { + return EIO; + } + + return EOK; +} + +static int wait_for_fd(struct ldap_req *lr) { + int ret; + int fd; + struct fd_event *fde; + + ret = ldap_get_option(lr->ldap, LDAP_OPT_DESC, &fd); + if ( ret != LDAP_OPT_SUCCESS ) { + DEBUG(1, ("ldap_get_option failed.\n")); + return ret; + } + + fde = event_add_fd(lr->req->be_ctx->ev, lr, fd, EVENT_FD_READ, lr->next_task, lr); + if ( fde == NULL ) { + return EIO; + } + + return EOK; +} + +static int ldap_pam_chauthtok(struct ldap_req *lr) { + BerElement *ber=NULL; + int ret; + int pam_status=PAM_SUCCESS; + struct berval *bv; + int msgid; + LDAPMessage *result=NULL; + int ldap_ret; + + ber = ber_alloc_t( LBER_USE_DER ); + if ( ber == NULL ) { + DEBUG(1, ("ber_alloc_t failed.\n")); + return PAM_SYSTEM_ERR; + } + + ret = ber_printf( ber, "{tststs}", LDAP_TAG_EXOP_MODIFY_PASSWD_ID, + lr->user_dn, + LDAP_TAG_EXOP_MODIFY_PASSWD_OLD, lr->pd->authtok, + LDAP_TAG_EXOP_MODIFY_PASSWD_NEW, lr->pd->newauthtok); + if ( ret == -1 ) { + DEBUG(1, ("ber_printf failed.\n")); + pam_status = PAM_SYSTEM_ERR; + goto cleanup; + } + + ret = ber_flatten(ber, &bv); + if ( ret == -1 ) { + DEBUG(1, ("ber_flatten failed.\n")); + pam_status = PAM_SYSTEM_ERR; + goto cleanup; + } + + ret = ldap_extended_operation(lr->ldap, LDAP_EXOP_MODIFY_PASSWD, bv, + NULL, NULL, &msgid); + if ( ret != LDAP_SUCCESS ) { + DEBUG(1, ("ldap_extended_operation failed.\n")); + pam_status = PAM_SYSTEM_ERR; + goto cleanup; + } + + ret = ldap_result(lr->ldap, msgid, FALSE, NULL, &result); + if ( ret == -1 ) { + DEBUG(1, ("ldap_result failed.\n")); + pam_status = PAM_SYSTEM_ERR; + goto cleanup; + } + ret = ldap_parse_result(lr->ldap, result, &ldap_ret, NULL, NULL, NULL, + NULL, 0); + if ( ret != LDAP_SUCCESS ) { + DEBUG(1, ("ldap_parse_result failed.\n")); + pam_status = PAM_SYSTEM_ERR; + goto cleanup; + } + DEBUG(3, ("LDAP_EXOP_MODIFY_PASSWD result: [%d][%s]\n", ldap_ret, + ldap_err2string(ldap_ret))); + + ldap_msgfree(result); + + if ( ldap_ret != LDAP_SUCCESS ) pam_status = PAM_SYSTEM_ERR; + +cleanup: + ber_bvfree(bv); + ber_free(ber, 1); + return pam_status; +} + +static int ldap_be_init(struct ldap_req *lr) { + int ret; + int status=EOK; + int ldap_vers = LDAP_VERSION3; + int msgid; + + ret = ldap_initialize(&(lr->ldap), lr->ldap_ctx->ldap_uri); + if (ret != LDAP_SUCCESS) { + DEBUG(1, ("ldap_initialize failed: %s\n", strerror(errno))); + return EIO; + } + + /* LDAPv3 is needed for TLS */ + ret = ldap_set_option(lr->ldap, LDAP_OPT_PROTOCOL_VERSION, &ldap_vers); + if ( ret != LDAP_OPT_SUCCESS) { + DEBUG(1, ("ldap_set_option failed: %s\n", ldap_err2string(ret))); + status = EIO; + goto cleanup; + } + + /* For now TLS is forced. Maybe it would be necessary to make this + * configurable to allow people to expose their passwords over the + * network. */ + ret = ldap_start_tls(lr->ldap, NULL, NULL, &msgid); + if ( ret != LDAP_SUCCESS) { + DEBUG(1, ("ldap_start_tls failed: %s\n", ldap_err2string(ret))); + status = EIO; + goto cleanup; + } + + lr->msgid = msgid; + + return EOK; + +cleanup: + ldap_unbind_ext(lr->ldap, NULL, NULL); + lr->ldap = NULL; + return status; +} + +static int ldap_be_bind(struct ldap_req *lr) { + int ret; + int msgid; + char *dn=NULL; + struct berval pw; + + pw.bv_len = 0; + pw.bv_val = NULL; + + if ( lr->user_dn != NULL ) { + dn = lr->user_dn; + pw.bv_len = lr->pd->authtok_size; + pw.bv_val = (char *) lr->pd->authtok; + } + if ( lr->user_dn == NULL && lr->ldap_ctx->default_bind_dn != NULL ) { + dn = lr->ldap_ctx->default_bind_dn; + pw.bv_len = lr->ldap_ctx->default_authtok_size; + pw.bv_val = lr->ldap_ctx->default_authtok; + } + + DEBUG(3, ("Trying to bind as [%s][%*s]\n", dn, pw.bv_len, pw.bv_val)); + ret = ldap_sasl_bind(lr->ldap, dn, LDAP_SASL_SIMPLE, &pw, NULL, NULL, + &msgid); + if ( ret == -1 || msgid == -1 ) { + DEBUG(1, ("ldap_bind failed\n")); + return LDAP_OTHER; + } + lr->msgid = msgid; + return LDAP_SUCCESS; +} + +static void ldap_be_loop(struct event_context *ev, struct fd_event *te, + uint16_t fd, void *pvt) { + int ret; + int pam_status=PAM_SUCCESS; + int ldap_ret; + struct ldap_req *lr; + struct be_pam_handler *ph; + struct be_req *req; + LDAPMessage *result=NULL; + LDAPMessage *msg=NULL; + struct timeval no_timeout={0, 0}; + char *errmsgp = NULL; +/* FIXME: user timeout form config */ + char *filter=NULL; + char *attrs[] = { LDAP_NO_ATTRS, NULL }; + + lr = talloc_get_type(pvt, struct ldap_req); + + switch ( lr->next_op ) { + case LDAP_OP_INIT: + ret = ldap_be_init(lr); + if (ret != EOK) { + DEBUG(1, ("ldap_be_init failed.\n")); + lr->ldap = NULL; + pam_status = PAM_SYSTEM_ERR; + goto done; + } + case LDAP_CHECK_INIT_RESULT: + ret = ldap_result(lr->ldap, lr->msgid, FALSE, &no_timeout, &result); + if ( ret == -1 ) { + DEBUG(1, ("ldap_result failed.\n")); + pam_status = PAM_SYSTEM_ERR; + goto done; + } + if ( ret == 0 ) { + DEBUG(1, ("ldap_result not ready yet, waiting.\n")); + lr->next_task = ldap_be_loop; + lr->next_op = LDAP_CHECK_INIT_RESULT; + ret = wait_for_fd(lr); + if ( ret != EOK ) { + DEBUG(1, ("schedule_next_task failed.\n")); + pam_status = PAM_SYSTEM_ERR; + goto done; + } + return; + } + + ret = ldap_parse_result(lr->ldap, result, &ldap_ret, NULL, NULL, NULL, NULL, 0); + if ( ret != LDAP_SUCCESS ) { + DEBUG(1, ("ldap_parse_result failed.\n")); + pam_status = PAM_SYSTEM_ERR; + goto done; + } + DEBUG(3, ("ldap_start_tls result: [%d][%s]\n", ldap_ret, ldap_err2string(ldap_ret))); + + if ( ldap_ret != LDAP_SUCCESS ) { + DEBUG(1, ("setting up TLS failed.\n")); + pam_status = PAM_SYSTEM_ERR; + goto done; + } + +/* FIXME: take care that ldap_install_tls might block */ + ret = ldap_install_tls(lr->ldap); + if ( ret != LDAP_SUCCESS ) { + DEBUG(1, ("ldap_install_tls failed.\n")); + pam_status = PAM_SYSTEM_ERR; + goto done; + } + + ret = ldap_be_bind(lr); + if ( ret != LDAP_SUCCESS ) { + DEBUG(1, ("ldap_be_bind failed.\n")); + pam_status = PAM_SYSTEM_ERR; + goto done; + } + case LDAP_CHECK_STD_BIND: + ret = ldap_result(lr->ldap, lr->msgid, FALSE, &no_timeout, &result); + if ( ret == -1 ) { + DEBUG(1, ("ldap_result failed.\n")); + pam_status = PAM_SYSTEM_ERR; + goto done; + } + if ( ret == 0 ) { + DEBUG(1, ("ldap_result not ready yet, waiting.\n")); + lr->next_task = ldap_be_loop; + lr->next_op = LDAP_CHECK_STD_BIND; + ret = wait_for_fd(lr); + if ( ret != EOK ) { + DEBUG(1, ("schedule_next_task failed.\n")); + pam_status = PAM_SYSTEM_ERR; + goto done; + } + return; + } + + ret = ldap_parse_result(lr->ldap, result, &ldap_ret, NULL, &errmsgp, + NULL, NULL, 0); + if ( ret != LDAP_SUCCESS ) { + DEBUG(1, ("ldap_parse_result failed.\n")); + pam_status = PAM_SYSTEM_ERR; + goto done; + } + DEBUG(3, ("Bind result: [%d][%s][%s]\n", ldap_ret, + ldap_err2string(ldap_ret), errmsgp)); + if ( ldap_ret != LDAP_SUCCESS ) { + DEBUG(1, ("bind failed.\n")); + pam_status = PAM_SYSTEM_ERR; + goto done; + } + + filter = talloc_asprintf(lr->ldap_ctx, + "(&(uid=%s)(objectclass=posixAccount))", + lr->pd->user); + + DEBUG(4, ("calling ldap_search_ext with [%s].\n", filter)); + ret = ldap_search_ext(lr->ldap, + "ou=user,dc=my-domain,dc=com", + LDAP_SCOPE_SUBTREE, + filter, + attrs, + TRUE, + NULL, + NULL, + NULL, + 0, + &(lr->msgid)); + if ( ret != LDAP_SUCCESS) { + DEBUG(1, ("ldap_search_ext failed [%d][%s].\n", ret, ldap_err2string(ret))); + pam_status = PAM_SYSTEM_ERR; + goto done; + } + case LDAP_CHECK_SEARCH_DN_RESULT: + ret = ldap_result(lr->ldap, lr->msgid, TRUE, &no_timeout, &result); + if ( ret == -1 ) { + DEBUG(1, ("ldap_result failed.\n")); + pam_status = PAM_SYSTEM_ERR; + goto done; + } + if ( ret == 0 ) { + DEBUG(1, ("ldap_result not ready yet, waiting.\n")); + lr->next_task = ldap_be_loop; + lr->next_op = LDAP_CHECK_SEARCH_DN_RESULT; + ret = wait_for_fd(lr); + if ( ret != EOK ) { + DEBUG(1, ("schedule_next_task failed.\n")); + pam_status = PAM_SYSTEM_ERR; + goto done; + } + return; + } + + msg = ldap_first_message(lr->ldap, result); + if ( msg == NULL ) { + DEBUG(1, ("ldap_first_message failed.\n")); + pam_status = PAM_SYSTEM_ERR; + goto done; + } + + do { + switch ( ldap_msgtype(msg) ) { + case LDAP_RES_SEARCH_ENTRY: + if ( lr->user_dn != NULL ) { + DEBUG(1, ("Found more than one object with filter [%s].\n", + filter)); + pam_status = PAM_SYSTEM_ERR; + goto done; + } + lr->user_dn = ldap_get_dn(lr->ldap, msg); + if ( lr->user_dn == NULL ) { + DEBUG(1, ("ldap_get_dn failed.\n")); + pam_status = PAM_SYSTEM_ERR; + goto done; + } + + if ( *(lr->user_dn) == '\0' ) { + DEBUG(1, ("No user found.\n")); + pam_status = PAM_USER_UNKNOWN; + goto done; + } + DEBUG(3, ("Found dn: %s\n",lr->user_dn)); + + ldap_msgfree(result); + result = NULL; + break; + default: + DEBUG(3, ("ignoring message with type %d.\n", ldap_msgtype(msg))); + } + } while( (msg=ldap_next_message(lr->ldap, msg)) != NULL ); + + ret = ldap_be_bind(lr); + if ( ret != LDAP_SUCCESS ) { + DEBUG(1, ("ldap_be_bind failed.\n")); + pam_status = PAM_SYSTEM_ERR; + goto done; + } + case LDAP_CHECK_USER_BIND: + ret = ldap_result(lr->ldap, lr->msgid, FALSE, &no_timeout, &result); + if ( ret == -1 ) { + DEBUG(1, ("ldap_result failed.\n")); + pam_status = PAM_SYSTEM_ERR; + goto done; + } + if ( ret == 0 ) { + DEBUG(1, ("ldap_result not ready yet, waiting.\n")); + lr->next_task = ldap_be_loop; + lr->next_op = LDAP_CHECK_USER_BIND; + ret = wait_for_fd(lr); + if ( ret != EOK ) { + DEBUG(1, ("schedule_next_task failed.\n")); + pam_status = PAM_SYSTEM_ERR; + goto done; + } + return; + } + + ret = ldap_parse_result(lr->ldap, result, &ldap_ret, NULL, &errmsgp, + NULL, NULL, 0); + if ( ret != LDAP_SUCCESS ) { + DEBUG(1, ("ldap_parse_result failed.\n")); + pam_status = PAM_SYSTEM_ERR; + goto done; + } + DEBUG(3, ("Bind result: [%d][%s][%s]\n", ldap_ret, + ldap_err2string(ldap_ret), errmsgp)); + switch (ldap_ret) { + case LDAP_SUCCESS: + pam_status = PAM_SUCCESS; + break; + case LDAP_INVALID_CREDENTIALS: + pam_status = PAM_CRED_INSUFFICIENT; + goto done; + break; + default: + pam_status = PAM_SYSTEM_ERR; + goto done; + } + + + + +/* + ret = pam_setup_ldap_connection(lr); + if ( ret != PAM_SUCCESS ) { + DEBUG(1, ("pam_setup_ldap_connection failed.\n")); + pam_status = ret; + goto done; + } + DEBUG(3, ("Successfully connected as %s.\n", lr->user_dn)); +*/ + + switch (lr->pd->cmd) { + case SSS_PAM_AUTHENTICATE: + pam_status = PAM_SUCCESS; + break; + case SSS_PAM_CHAUTHTOK: + pam_status = ldap_pam_chauthtok(lr); + break; + case SSS_PAM_ACCT_MGMT: + case SSS_PAM_SETCRED: + case SSS_PAM_OPEN_SESSION: + case SSS_PAM_CLOSE_SESSION: + pam_status = PAM_SUCCESS; + break; + default: + DEBUG(1, ("Unknown pam command %d.\n", lr->pd->cmd)); + pam_status = PAM_SYSTEM_ERR; + } + break; + default: + DEBUG(1, ("Unknown ldap backend operation %d.\n", lr->next_op)); + pam_status = PAM_SYSTEM_ERR; + } + +done: + ldap_memfree(errmsgp); + ldap_msgfree(result); + talloc_free(filter); + if (lr->ldap != NULL ) ldap_unbind_ext(lr->ldap, NULL, NULL); + req = lr->req; + ph = talloc_get_type(lr->req->req_data, struct be_pam_handler); + ph->pam_status = pam_status; + + talloc_free(lr); + + req->fn(req, pam_status, NULL); +} + +static void ldap_start(struct event_context *ev, struct timed_event *te, + struct timeval tv, void *pvt) { + int ret; + int pam_status; + struct ldap_req *lr; + struct be_req *req; + struct be_pam_handler *ph; + + lr = talloc_get_type(pvt, struct ldap_req); + + ret = ldap_be_init(lr); + if (ret != EOK) { + DEBUG(1, ("ldap_be_init failed.\n")); + lr->ldap = NULL; + pam_status = PAM_SYSTEM_ERR; + goto done; + } + + lr->next_task = ldap_be_loop; + lr->next_op = LDAP_CHECK_INIT_RESULT; + ret = wait_for_fd(lr); + if ( ret != EOK ) { + DEBUG(1, ("schedule_next_task failed.\n")); + pam_status = PAM_SYSTEM_ERR; + goto done; + } + return; + +done: + if (lr->ldap != NULL ) ldap_unbind_ext(lr->ldap, NULL, NULL); + req = lr->req; + ph = talloc_get_type(lr->req->req_data, struct be_pam_handler); + ph->pam_status = pam_status; + + talloc_free(lr); + + req->fn(req, pam_status, NULL); +} + +static void ldap_pam_handler(struct be_req *req) { + int ret; + int pam_status=PAM_SUCCESS; + struct ldap_req *lr; + struct ldap_ctx *ldap_ctx; + struct be_pam_handler *ph; + struct pam_data *pd; + struct timeval timeout; + + ph = talloc_get_type(req->req_data, struct be_pam_handler); + pd = ph->pd; + + ldap_ctx = talloc_get_type(req->be_ctx->pvt_data, struct ldap_ctx); + + lr = talloc(req, struct ldap_req); + + lr->ldap = NULL; + lr->req = req; + lr->pd = pd; + lr->ldap_ctx = ldap_ctx; + lr->user_dn = NULL; + lr->next_task = NULL; + lr->next_op = LDAP_NOOP; + + timeout.tv_sec=0; + timeout.tv_usec=0; + ret = schedule_next_task(lr, timeout, ldap_start); + if ( ret != EOK ) { + DEBUG(1, ("schedule_next_task failed.\n")); + pam_status = PAM_SYSTEM_ERR; + goto done; + } + + return; + +done: + talloc_free(lr); + + ph->pam_status = pam_status; + req->fn(req, pam_status, NULL); +} + +struct be_mod_ops ldap_mod_ops = { + .check_online = NULL, + .get_account_info = NULL, + .pam_handler = ldap_pam_handler +}; + + +int sssm_ldap_init(struct be_ctx *bectx, struct be_mod_ops **ops, void **pvt_data) +{ + struct ldap_ctx *ctx; + char *ldap_uri; + char *default_bind_dn; + char *default_authtok_type; + char *default_authtok; + int ret; + + ctx = talloc(bectx, struct ldap_ctx); + if (!ctx) { + return ENOMEM; + } + + ret = confdb_get_string(bectx->cdb, ctx, bectx->conf_path, + "ldapUri", "ldap://localhost", &ldap_uri); + if (ret != EOK) goto done; + ctx->ldap_uri = ldap_uri; + + ret = confdb_get_string(bectx->cdb, ctx, bectx->conf_path, + "defaultBindDn", NULL, &default_bind_dn); + if (ret != EOK) goto done; + ctx->default_bind_dn = default_bind_dn; + + ret = confdb_get_string(bectx->cdb, ctx, bectx->conf_path, + "defaultAuthtokType", NULL, &default_authtok_type); + if (ret != EOK) goto done; + ctx->default_authtok_type = default_authtok_type; + + +/* TODO: better to have a blob object than a string here */ + ret = confdb_get_string(bectx->cdb, ctx, bectx->conf_path, + "defaultAuthtok", NULL, &default_authtok); + if (ret != EOK) goto done; + ctx->default_authtok = default_authtok; + ctx->default_authtok_size = (default_authtok==NULL?0:strlen(default_authtok)); + + + + *ops = &ldap_mod_ops; + *pvt_data = ctx; + ret = EOK; + +done: + if (ret != EOK) { + talloc_free(ctx); + } + return ret; +} diff --git a/server/providers/proxy.c b/server/providers/proxy.c index 0ec6e5302..e072ec3c7 100644 --- a/server/providers/proxy.c +++ b/server/providers/proxy.c @@ -23,9 +23,14 @@ #include <errno.h> #include <pwd.h> #include <grp.h> + +#include <security/pam_appl.h> +#include <security/pam_modules.h> + #include "util/util.h" #include "providers/dp_backend.h" #include "db/sysdb.h" +#include "../sss_client/sss_cli.h" struct proxy_nss_ops { enum nss_status (*getpwnam_r)(const char *name, struct passwd *result, @@ -154,6 +159,130 @@ static void get_pw_uid(struct be_req *req, uid_t uid) return proxy_reply(req, EOK, NULL); } +struct authtok_conv { + char *authtok; + char *oldauthtok; +}; + +static int proxy_internal_conv(int num_msg, const struct pam_message **msgm, + struct pam_response **response, + void *appdata_ptr) { + int i; + struct pam_response *reply; + struct authtok_conv *auth_data; + + auth_data = talloc_get_type(appdata_ptr, struct authtok_conv); + + if (num_msg <= 0) return PAM_CONV_ERR; + + reply = (struct pam_response *) calloc(num_msg, + sizeof(struct pam_response)); + if (reply == NULL) return PAM_CONV_ERR; + + for (i=0; i < num_msg; i++) { + switch( msgm[i]->msg_style ) { + case PAM_PROMPT_ECHO_OFF: + DEBUG(4, ("Conversation message: %s.\n", msgm[i]->msg)); + reply[i].resp_retcode = 0; + reply[i].resp = strdup(auth_data->authtok); + break; + default: + DEBUG(1, ("Conversation style %d not supported.\n", + msgm[i]->msg_style)); + goto failed; + } + } + + *response = reply; + reply = NULL; + + return PAM_SUCCESS; + +failed: + free(reply); + return PAM_CONV_ERR; +} + +static void proxy_pam_handler(struct be_req *req) { + int ret; + int pam_status; + pam_handle_t *pamh=NULL; + struct authtok_conv *auth_data; + struct pam_conv conv; + struct be_pam_handler *ph; + struct pam_data *pd; + + ph = talloc_get_type(req->req_data, struct be_pam_handler); + pd = ph->pd; + + conv.conv=proxy_internal_conv; + auth_data = talloc_zero(req->be_ctx, struct authtok_conv); + conv.appdata_ptr=auth_data; + + ret = pam_start("sssd_be_test", pd->user, &conv, &pamh); + if (ret == PAM_SUCCESS) { + DEBUG(1, ("Pam transaction started.\n")); + pam_set_item(pamh, PAM_TTY, pd->tty); + if (ret != PAM_SUCCESS) { + DEBUG(1, ("Setting PAM_TTY failed: %s.\n", pam_strerror(pamh, ret))); + } + pam_set_item(pamh, PAM_RUSER, pd->ruser); + if (ret != PAM_SUCCESS) { + DEBUG(1, ("Setting PAM_RUSER failed: %s.\n", pam_strerror(pamh, ret))); + } + pam_set_item(pamh, PAM_RHOST, pd->rhost); + if (ret != PAM_SUCCESS) { + DEBUG(1, ("Setting PAM_RHOST failed: %s.\n", pam_strerror(pamh, ret))); + } + switch (pd->cmd) { + case SSS_PAM_AUTHENTICATE: +/* FIXME: \0 missing at the end */ + auth_data->authtok=(char *) pd->authtok; + auth_data->oldauthtok=NULL; + pam_status=pam_authenticate(pamh, 0); + break; + case SSS_PAM_SETCRED: + pam_status=pam_setcred(pamh, 0); + break; + case SSS_PAM_ACCT_MGMT: + pam_status=pam_acct_mgmt(pamh, 0); + break; + case SSS_PAM_OPEN_SESSION: + pam_status=pam_open_session(pamh, 0); + break; + case SSS_PAM_CLOSE_SESSION: + pam_status=pam_close_session(pamh, 0); + break; + case SSS_PAM_CHAUTHTOK: +/* FIXME: \0 missing at the end */ + auth_data->authtok=(char *) pd->newauthtok; + auth_data->oldauthtok=(char *) pd->authtok; + pam_status=pam_chauthtok(pamh, 0); + break; + default: + DEBUG(1, ("unknown PAM call")); + pam_status=PAM_ABORT; + } + + DEBUG(4, ("Pam result: [%d][%s]\n", pam_status, pam_strerror(pamh, pam_status))); + + ret = pam_end(pamh, pam_status); + if (ret != PAM_SUCCESS) { + pamh=NULL; + DEBUG(1, ("Cannot terminate pam transaction.\n")); + } + + } else { + DEBUG(1, ("Failed to initialize pam transaction.\n")); + pam_status = PAM_SYSTEM_ERR; + } + + talloc_free(auth_data); + + ph->pam_status = pam_status; + req->fn(req, EOK, NULL); +} + #define MAX_BUF_SIZE 1024*1024 /* max 1MiB */ static void enum_users(struct be_req *req) @@ -664,7 +793,8 @@ static void proxy_get_account_info(struct be_req *req) struct be_mod_ops proxy_mod_ops = { .check_online = proxy_check_online, - .get_account_info = proxy_get_account_info + .get_account_info = proxy_get_account_info, + .pam_handler = proxy_pam_handler }; static void *proxy_dlsym(void *handle, const char *functemp, char *libname) diff --git a/server/responder/common/responder_cmd.c b/server/responder/common/responder_cmd.c new file mode 100644 index 000000000..83d55e651 --- /dev/null +++ b/server/responder/common/responder_cmd.c @@ -0,0 +1,78 @@ +/* + SSSD + + SSS Client Responder, command parser + + 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 <errno.h> +#include "util/util.h" +#include "responder/common/responder_cmd.h" +#include "responder/common/responder_packet.h" + + +void sss_cmd_done(struct sss_cmd_ctx *nctx) +{ + /* now that the packet is in place, unlock queue + * making the event writable */ + EVENT_FD_WRITEABLE(nctx->cctx->cfde); + + /* free all request related data through the talloc hierarchy */ + talloc_free(nctx); +} + +int sss_cmd_get_version(struct cli_ctx *cctx) +{ + struct sss_cmd_ctx *nctx; + uint8_t *body; + size_t blen; + int ret; + + nctx = talloc(cctx, struct sss_cmd_ctx); + if (!nctx) { + return ENOMEM; + } + nctx->cctx = cctx; + + /* create response packet */ + ret = sss_packet_new(cctx->creq, sizeof(uint32_t), + sss_packet_get_cmd(cctx->creq->in), + &cctx->creq->out); + if (ret != EOK) { + return ret; + } + sss_packet_get_body(cctx->creq->out, &body, &blen); + ((uint32_t *)body)[0] = SSS_PROTOCOL_VERSION; + + sss_cmd_done(nctx); + return EOK; +} + +int sss_cmd_execute(struct cli_ctx *cctx, struct sss_cmd_table *sss_cmds) +{ + enum sss_cli_command cmd; + int i; + + cmd = sss_packet_get_cmd(cctx->creq->in); + + for (i = 0; sss_cmds[i].cmd != SSS_CLI_NULL; i++) { + if (cmd == sss_cmds[i].cmd) { + return sss_cmds[i].fn(cctx); + } + } + + return EINVAL; +} diff --git a/server/responder/common/responder_cmd.h b/server/responder/common/responder_cmd.h new file mode 100644 index 000000000..ee094ad3b --- /dev/null +++ b/server/responder/common/responder_cmd.h @@ -0,0 +1,71 @@ +/* + SSSD + + SSS Client Responder, header file + + 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/>. +*/ + +#ifndef __SSSSRV_CMD_H__ +#define __SSSSRV_CMD_H__ + +#include <stdint.h> +#include <sys/un.h> +#include "talloc.h" +#include "tevent.h" +#include "ldb.h" +#include "../sss_client/sss_cli.h" + +/* needed until nsssrv.h is updated */ +#ifndef __NSSSRV_H__ +struct cli_request { + + /* original request from the wire */ + struct sss_packet *in; + + /* reply data */ + struct sss_packet *out; +}; + +struct cli_ctx { + struct event_context *ev; + struct nss_ctx *nctx; + int cfd; + struct fd_event *cfde; + struct sockaddr_un addr; + struct cli_request *creq; + struct getent_ctx *gctx; +}; +#endif + +struct sss_cmd_ctx { + struct cli_ctx *cctx; + const char *domain; + const char *name; + uid_t id; + bool check_expiration; +}; + +struct sss_cmd_table { + enum sss_cli_command cmd; + int (*fn)(struct cli_ctx *cctx); +}; + +int sss_cmd_execute(struct cli_ctx *cctx, struct sss_cmd_table *sss_cmds); +void sss_cmd_done(struct sss_cmd_ctx *nctx); +int sss_cmd_get_version(struct cli_ctx *cctx); + +#endif /* __SSSSRV_CMD_H__ */ diff --git a/server/responder/common/responder_common.c b/server/responder/common/responder_common.c new file mode 100644 index 000000000..b5db7d1e2 --- /dev/null +++ b/server/responder/common/responder_common.c @@ -0,0 +1,518 @@ +/* + SSSD + + Common Responder methods + + 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 <stdio.h> +#include <unistd.h> +#include <fcntl.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <sys/socket.h> +#include <sys/un.h> +#include <string.h> +#include <sys/time.h> +#include <errno.h> +#include "popt.h" +#include "util/util.h" +#include "responder/nss/nsssrv.h" +#include "db/sysdb.h" +#include "confdb/confdb.h" +#include "dbus/dbus.h" +#include "sbus/sssd_dbus.h" +#include "util/btreemap.h" +#include "responder/common/responder_packet.h" +#include "responder/common/responder_cmd.h" +#include "responder/common/responder_dp.h" +#include "providers/data_provider.h" +#include "monitor/monitor_sbus.h" +#include "monitor/monitor_interfaces.h" +#include "sbus/sbus_client.h" + +static void set_nonblocking(int fd) +{ + unsigned v; + v = fcntl(fd, F_GETFL, 0); + fcntl(fd, F_SETFL, v | O_NONBLOCK); +} + +static void set_close_on_exec(int fd) +{ + unsigned v; + v = fcntl(fd, F_GETFD, 0); + fcntl(fd, F_SETFD, v | FD_CLOEXEC); +} + +static int client_destructor(struct cli_ctx *ctx) +{ + if (ctx->cfd > 0) close(ctx->cfd); + return 0; +} + +static void client_send(struct event_context *ev, struct cli_ctx *cctx) +{ + int ret; + + ret = sss_packet_send(cctx->creq->out, cctx->cfd); + if (ret == EAGAIN) { + /* not all data was sent, loop again */ + return; + } + if (ret != EOK) { + DEBUG(0, ("Failed to read request, aborting client!\n")); + talloc_free(cctx); + return; + } + + /* ok all sent */ + EVENT_FD_NOT_WRITEABLE(cctx->cfde); + EVENT_FD_READABLE(cctx->cfde); + talloc_free(cctx->creq); + cctx->creq = NULL; + return; +} + +static void client_recv(struct event_context *ev, struct cli_ctx *cctx) +{ + int ret; + + if (!cctx->creq) { + cctx->creq = talloc_zero(cctx, struct cli_request); + if (!cctx->creq) { + DEBUG(0, ("Failed to alloc request, aborting client!\n")); + talloc_free(cctx); + return; + } + } + + if (!cctx->creq->in) { + ret = sss_packet_new(cctx->creq, NSS_PACKET_MAX_RECV_SIZE, + 0, &cctx->creq->in); + if (ret != EOK) { + DEBUG(0, ("Failed to alloc request, aborting client!\n")); + talloc_free(cctx); + return; + } + } + + ret = sss_packet_recv(cctx->creq->in, cctx->cfd); + switch (ret) { + case EOK: + /* do not read anymore */ + EVENT_FD_NOT_READABLE(cctx->cfde); + /* execute command */ + ret = sss_cmd_execute(cctx, cctx->nctx->sss_cmds); + if (ret != EOK) { + DEBUG(0, ("Failed to execute request, aborting client!\n")); + talloc_free(cctx); + } + /* past this point cctx can be freed at any time by callbacks + * in case of error, do not use it */ + return; + + case EAGAIN: + /* need to read still some data, loop again */ + break; + + case EINVAL: + DEBUG(6, ("Invalid data from client, closing connection!\n")); + talloc_free(cctx); + break; + + case ENODATA: + DEBUG(5, ("Client disconnected!\n")); + talloc_free(cctx); + break; + + default: + DEBUG(6, ("Failed to read request, aborting client!\n")); + talloc_free(cctx); + } + + return; +} + +static void client_fd_handler(struct event_context *ev, + struct fd_event *fde, + uint16_t flags, void *ptr) +{ + struct cli_ctx *cctx = talloc_get_type(ptr, struct cli_ctx); + + if (flags & EVENT_FD_READ) { + client_recv(ev, cctx); + return; + } + if (flags & EVENT_FD_WRITE) { + client_send(ev, cctx); + return; + } +} + +static void accept_fd_handler(struct event_context *ev, + struct fd_event *fde, + uint16_t flags, void *ptr) +{ + /* accept and attach new event handler */ + struct nss_ctx *nctx = talloc_get_type(ptr, struct nss_ctx); + struct cli_ctx *cctx; + socklen_t len; + + cctx = talloc_zero(nctx, struct cli_ctx); + if (!cctx) { + struct sockaddr_un addr; + int fd; + DEBUG(0, ("Out of memory trying to setup client context!\n")); + /* accept and close to signal the client we have a problem */ + memset(&addr, 0, sizeof(addr)); + len = sizeof(addr); + fd = accept(nctx->lfd, (struct sockaddr *)&addr, &len); + if (fd == -1) { + return; + } + close(fd); + return; + } + + len = sizeof(cctx->addr); + cctx->cfd = accept(nctx->lfd, (struct sockaddr *)&cctx->addr, &len); + if (cctx->cfd == -1) { + DEBUG(1, ("Accept failed [%s]", strerror(errno))); + talloc_free(cctx); + return; + } + + cctx->cfde = event_add_fd(ev, cctx, cctx->cfd, + EVENT_FD_READ, client_fd_handler, cctx); + if (!cctx->cfde) { + close(cctx->cfd); + talloc_free(cctx); + DEBUG(2, ("Failed to queue client handler\n")); + } + + cctx->ev = ev; + cctx->nctx = nctx; + + talloc_set_destructor(cctx, client_destructor); + + DEBUG(4, ("Client connected!\n")); + + return; +} + +static int sss_sbus_init(struct nss_ctx *nctx) +{ + int ret; + char *sbus_address; + struct service_sbus_ctx *ss_ctx; + struct sbus_method_ctx *sm_ctx; + + /* Set up SBUS connection to the monitor */ + ret = monitor_get_sbus_address(nctx, nctx->cdb, &sbus_address); + if (ret != EOK) { + DEBUG(0, ("Could not locate monitor address.\n")); + return ret; + } + + ret = monitor_init_sbus_methods(nctx, nctx->sss_sbus_methods, &sm_ctx); + if (ret != EOK) { + DEBUG(0, ("Could not initialize SBUS methods.\n")); + return ret; + } + + ret = sbus_client_init(nctx, nctx->ev, + sbus_address, sm_ctx, + NULL /* Private Data */, + NULL /* Destructor */, + &ss_ctx); + if (ret != EOK) { + DEBUG(0, ("Failed to connect to monitor services.\n")); + return ret; + } + + /* Set up NSS-specific listeners */ + /* None currently used */ + + nctx->ss_ctx = ss_ctx; + + return EOK; +} + +/* create a unix socket and listen to it */ +static int set_unix_socket(struct nss_ctx *nctx) +{ + struct sockaddr_un addr; + char *default_pipe; + int ret; + + default_pipe = talloc_asprintf(nctx, "%s/%s", PIPE_PATH, + nctx->sss_pipe_name); + if (!default_pipe) { + return ENOMEM; + } + + ret = confdb_get_string(nctx->cdb, nctx, + nctx->confdb_socket_path, "unixSocket", + default_pipe, &nctx->sock_name); + if (ret != EOK) { + talloc_free(default_pipe); + return ret; + } + talloc_free(default_pipe); + + nctx->lfd = socket(AF_UNIX, SOCK_STREAM, 0); + if (nctx->lfd == -1) { + return EIO; + } + + /* Set the umask so that permissions are set right on the socket. + * It must be readable and writable by anybody on the system. */ + umask(0111); + + set_nonblocking(nctx->lfd); + set_close_on_exec(nctx->lfd); + + memset(&addr, 0, sizeof(addr)); + addr.sun_family = AF_UNIX; + strncpy(addr.sun_path, nctx->sock_name, sizeof(addr.sun_path)); + + /* make sure we have no old sockets around */ + unlink(nctx->sock_name); + + if (bind(nctx->lfd, (struct sockaddr *)&addr, sizeof(addr)) == -1) { + DEBUG(0,("Unable to bind on socket '%s'\n", nctx->sock_name)); + goto failed; + } + if (listen(nctx->lfd, 10) != 0) { + DEBUG(0,("Unable to listen on socket '%s'\n", nctx->sock_name)); + goto failed; + } + + nctx->lfde = event_add_fd(nctx->ev, nctx, nctx->lfd, + EVENT_FD_READ, accept_fd_handler, nctx); + + /* we want default permissions on created files to be very strict, + so set our umask to 0177 */ + umask(0177); + return EOK; + +failed: + /* we want default permissions on created files to be very strict, + so set our umask to 0177 */ + umask(0177); + close(nctx->lfd); + return EIO; +} + +/* domain names are case insensitive for now + * NOTE: this function is not utf-8 safe, + * only ASCII names for now */ +static int _domain_comparator(const void *key1, const void *key2) +{ + return strcasecmp((const char *)key1, (const char *)key2); +} + +static int sss_init_domains(struct nss_ctx *nctx) +{ + char *path; + char **domains; + char *provider; + TALLOC_CTX *tmp_ctx; + struct nss_domain_info *info; + int ret, i, c; + int retval; + + tmp_ctx = talloc_new(nctx); + ret = confdb_get_domains(nctx->cdb, tmp_ctx, &domains); + if (ret != EOK) { + retval = ret; + goto done; + } + + i = 0; + c = 0; + while (domains[i] != NULL) { + DEBUG(3, ("Adding domain %s to the map\n", domains[i])); + + path = talloc_asprintf(tmp_ctx, "config/domains/%s", domains[i]); + if (!path) { + retval = ENOMEM; + goto done; + } + + /* alloc on tmp_ctx, it will be stolen by btreemap_set_value */ + info = talloc_zero(tmp_ctx, struct nss_domain_info); + if (!info) { + retval = ENOMEM; + goto done; + } + + /* Build the basedn for this domain */ + info->basedn = talloc_asprintf(info, SYSDB_DOM_BASE, domains[i]); + DEBUG(3, ("BaseDN: %s\n", info->basedn)); + + ret = confdb_get_int(nctx->cdb, tmp_ctx, path, + "enumerate", false, &(info->enumerate)); + if (ret != EOK) { + DEBUG(0, ("Failed to fetch enumerate for [%s]!\n", domains[i])); + } + + ret = confdb_get_bool(nctx->cdb, tmp_ctx, path, + "legacy", false, &(info->legacy)); + if (ret != EOK) { + DEBUG(0, ("Failed to fetch legacy for [%s]!\n", domains[i])); + } + + ret = confdb_get_string(nctx->cdb, tmp_ctx, path, "provider", + NULL, &provider); + if (ret != EOK) { + DEBUG(0, ("Failed to fetch provider for [%s]!\n", domains[i])); + } + if (provider) info->has_provider = true; + + ret = btreemap_set_value(nctx, &nctx->domain_map, + domains[i], info, + _domain_comparator); + if (ret != EOK) { + DEBUG(1, ("Failed to store domain info, aborting!\n")); + retval = ret; + goto done; + } + + i++; + c++; + } + if (c == 0) { + /* No domains configured! + * Note: this should never happen, since LOCAL should + * always be configured */ + DEBUG(0, ("No domains configured on this client!\n")); + retval = EINVAL; + goto done; + } + + ret = confdb_get_string(nctx->cdb, nctx, + "config/domains", "default", + NULL, &nctx->default_domain); + if (ret != EOK) { + retval = ret; + goto done; + } + + retval = EOK; + +done: + talloc_free(tmp_ctx); + return retval; +} + +int sss_process_init(TALLOC_CTX *mem_ctx, + struct event_context *ev, + struct confdb_ctx *cdb, + struct sbus_method sss_sbus_methods[], + struct sss_cmd_table sss_cmds[], + const char *sss_pipe_name, + const char *confdb_socket_path, + struct sbus_method dp_methods[]) +{ + struct nss_ctx *nctx; + int ret; + + nctx = talloc_zero(mem_ctx, struct nss_ctx); + if (!nctx) { + DEBUG(0, ("fatal error initializing nss_ctx\n")); + return ENOMEM; + } + nctx->ev = ev; + nctx->cdb = cdb; + nctx->sss_sbus_methods = sss_sbus_methods; + nctx->sss_cmds = sss_cmds; + nctx->sss_pipe_name = sss_pipe_name; + nctx->confdb_socket_path = confdb_socket_path; + nctx->dp_methods = dp_methods; + + ret = sss_init_domains(nctx); + if (ret != EOK) { + DEBUG(0, ("fatal error setting up domain map\n")); + return ret; + } + + ret = sss_sbus_init(nctx); + if (ret != EOK) { + DEBUG(0, ("fatal error setting up message bus\n")); + return ret; + } + + ret = sss_dp_init(nctx, nctx->dp_methods); + if (ret != EOK) { + DEBUG(0, ("fatal error setting up backend connector\n")); + return ret; + } + + ret = sysdb_init(nctx, ev, cdb, NULL, &nctx->sysdb); + if (ret != EOK) { + DEBUG(0, ("fatal error initializing nss_ctx\n")); + return ret; + } + + /* after all initializations we are ready to listen on our socket */ + ret = set_unix_socket(nctx); + if (ret != EOK) { + DEBUG(0, ("fatal error initializing socket\n")); + return ret; + } + + nctx->cache_timeout = 600; /* FIXME: read from conf */ + + DEBUG(1, ("NSS Initialization complete\n")); + + return EOK; +} + +int sss_parse_name(TALLOC_CTX *memctx, + const char *fullname, + struct btreemap *domain_map, + const char **domain, const char **name) { + char *delim; + struct btreemap *node; + int ret; + + if ((delim = strchr(fullname, NSS_DOMAIN_DELIM)) != NULL) { + + /* Check for registered domain */ + ret = btreemap_search_key(domain_map, (void *)(delim+1), &node); + if (ret != BTREEMAP_FOUND) { + /* No such domain was registered. Return EINVAL. + * TODO: alternative approach? + * Alternatively, we could simply fail down to + * below, treating the entire construct as the + * full name if the domain is unspecified. + */ + return EINVAL; + } + + *name = talloc_strndup(memctx, fullname, delim-fullname); + *domain = talloc_strdup(memctx, delim+1); + } + else { + *name = talloc_strdup(memctx, fullname); + *domain = NULL; + } + + return EOK; +} diff --git a/server/responder/common/responder_common.h b/server/responder/common/responder_common.h new file mode 100644 index 000000000..433b242e2 --- /dev/null +++ b/server/responder/common/responder_common.h @@ -0,0 +1,24 @@ +#include "sbus/sssd_dbus.h" +#include "responder/common/responder_cmd.h" +#include "util/btreemap.h" + +/* SSS_DOMAIN_DELIM can be specified in config.h */ +#include "config.h" +#ifndef SSS_DOMAIN_DELIM +#define SSS_DOMAIN_DELIM '@' +#endif + + +int sss_process_init(TALLOC_CTX *mem_ctx, + struct event_context *ev, + struct confdb_ctx *cdb, + struct sbus_method sss_sbus_methods[], + struct sss_cmd_table sss_cmds[], + const char *sss_pipe_name, + const char *confdb_socket_path, + struct sbus_method dp_methods[]); + +int sss_parse_name(TALLOC_CTX *memctx, + const char *fullname, + struct btreemap *domain_map, + const char **domain, const char **name); diff --git a/server/responder/common/responder_dp.c b/server/responder/common/responder_dp.c new file mode 100644 index 000000000..a024674b3 --- /dev/null +++ b/server/responder/common/responder_dp.c @@ -0,0 +1,123 @@ + +#include <sys/time.h> +#include <time.h> +#include "responder/nss/nsssrv.h" +#include "util/util.h" +#include "responder/common/responder_packet.h" +#include "responder/common/responder_common.h" +#include "providers/data_provider.h" +#include "sbus/sbus_client.h" +#include "providers/dp_sbus.h" + +struct sss_dp_pvt_ctx { + struct nss_ctx *nctx; + struct sbus_method *methods; + time_t last_retry; + int retries; +}; + +static int sss_dp_conn_destructor(void *data); +static void sss_dp_reconnect(struct event_context *ev, + struct timed_event *te, + struct timeval tv, void *data); + +static void sss_dp_conn_reconnect(struct sss_dp_pvt_ctx *pvt) +{ + struct nss_ctx *nctx; + struct timed_event *te; + struct timeval tv; + struct sbus_method_ctx *sm_ctx; + char *sbus_address; + time_t now; + int ret; + + now = time(NULL); + + /* reset retry if last reconnect was > 60 sec. ago */ + if (pvt->last_retry + 60 < now) pvt->retries = 0; + if (pvt->retries >= 3) { + DEBUG(4, ("Too many reconnect retries! Giving up\n")); + return; + } + + pvt->last_retry = now; + pvt->retries++; + + nctx = pvt->nctx; + + ret = dp_get_sbus_address(nctx, nctx->cdb, &sbus_address); + if (ret != EOK) { + DEBUG(0, ("Could not locate data provider address.\n")); + return; + } + + ret = dp_init_sbus_methods(nctx, pvt->methods, &sm_ctx); + if (ret != EOK) { + DEBUG(0, ("Could not initialize SBUS methods.\n")); + return; + } + + ret = sbus_client_init(nctx, nctx->ev, + sbus_address, sm_ctx, + pvt, sss_dp_conn_destructor, + &nctx->dp_ctx); + if (ret != EOK) { + DEBUG(4, ("Failed to reconnect [%d(%s)]!\n", ret, strerror(ret))); + + tv.tv_sec = now +5; + tv.tv_usec = 0; + te = event_add_timed(nctx->ev, nctx, tv, sss_dp_reconnect, pvt); + if (te == NULL) { + DEBUG(4, ("Failed to add timed event! Giving up\n")); + } else { + DEBUG(4, ("Retrying in 5 seconds\n")); + } + } +} + +static void sss_dp_reconnect(struct event_context *ev, + struct timed_event *te, + struct timeval tv, void *data) +{ + struct sss_dp_pvt_ctx *pvt; + + pvt = talloc_get_type(data, struct sss_dp_pvt_ctx); + + sss_dp_conn_reconnect(pvt); +} + +int sss_dp_conn_destructor(void *data) +{ + struct sss_dp_pvt_ctx *pvt; + struct sbus_conn_ctx *scon; + + scon = talloc_get_type(data, struct sbus_conn_ctx); + if (!scon) return 0; + + /* if this is a regular disconnect just quit */ + if (sbus_conn_disconnecting(scon)) return 0; + + pvt = talloc_get_type(sbus_conn_get_private_data(scon), + struct sss_dp_pvt_ctx); + if (pvt) return 0; + + sss_dp_conn_reconnect(pvt); + + return 0; +} + +int sss_dp_init(struct nss_ctx *nctx, struct sbus_method *dp_methods) +{ + struct sss_dp_pvt_ctx *pvt; + + pvt = talloc_zero(nctx, struct sss_dp_pvt_ctx); + if (!pvt) return ENOMEM; + + pvt->nctx = nctx; + pvt->methods = dp_methods; + + sss_dp_conn_reconnect(pvt); + + return EOK; +} + diff --git a/server/responder/common/responder_dp.h b/server/responder/common/responder_dp.h new file mode 100644 index 000000000..2eeddf5b0 --- /dev/null +++ b/server/responder/common/responder_dp.h @@ -0,0 +1,4 @@ +#include "responder/nss/nsssrv.h" +#include "sbus/sssd_dbus.h" + +int sss_dp_init(struct nss_ctx *nctx, struct sbus_method dp_methods[]); diff --git a/server/nss/nsssrv_packet.c b/server/responder/common/responder_packet.c index f79087d4e..247629342 100644 --- a/server/nss/nsssrv_packet.c +++ b/server/responder/common/responder_packet.c @@ -1,7 +1,7 @@ /* SSSD - NSS Responder, command parser + SSS Client Responder, command parser Copyright (C) Simo Sorce <ssorce@redhat.com> 2008 @@ -25,11 +25,11 @@ #include <errno.h> #include "talloc.h" #include "util/util.h" -#include "nss/nsssrv.h" +#include "responder/common/responder_packet.h" -#define NSSSRV_PACKET_MEM_SIZE 512 +#define SSSSRV_PACKET_MEM_SIZE 512 -struct nss_packet { +struct sss_packet { size_t memsize; uint8_t *buffer; @@ -49,22 +49,22 @@ struct nss_packet { * Allocate a new packet structure * * - if size is defined use it otherwise the default packet will be - * NSSSRV_PACKET_MEM_SIZE bytes. + * SSSSRV_PACKET_MEM_SIZE bytes. */ -int nss_packet_new(TALLOC_CTX *mem_ctx, size_t size, - enum sss_nss_command cmd, - struct nss_packet **rpacket) +int sss_packet_new(TALLOC_CTX *mem_ctx, size_t size, + enum sss_cli_command cmd, + struct sss_packet **rpacket) { - struct nss_packet *packet; + struct sss_packet *packet; - packet = talloc(mem_ctx, struct nss_packet); + packet = talloc(mem_ctx, struct sss_packet); if (!packet) return ENOMEM; if (size) { - int n = (size + SSS_NSS_HEADER_SIZE) % NSSSRV_PACKET_MEM_SIZE; - packet->memsize = (n + 1) * NSSSRV_PACKET_MEM_SIZE; + int n = (size + SSS_NSS_HEADER_SIZE) % SSSSRV_PACKET_MEM_SIZE; + packet->memsize = (n + 1) * SSSSRV_PACKET_MEM_SIZE; } else { - packet->memsize = NSSSRV_PACKET_MEM_SIZE; + packet->memsize = SSSSRV_PACKET_MEM_SIZE; } packet->buffer = talloc_size(packet, packet->memsize); @@ -90,8 +90,8 @@ int nss_packet_new(TALLOC_CTX *mem_ctx, size_t size, return EOK; } -/* grows a packet size only in NSSSRV_PACKET_MEM_SIZE chunks */ -int nss_packet_grow(struct nss_packet *packet, size_t size) +/* grows a packet size only in SSSSRV_PACKET_MEM_SIZE chunks */ +int sss_packet_grow(struct sss_packet *packet, size_t size) { size_t totlen, len; uint8_t *newmem; @@ -105,8 +105,8 @@ int nss_packet_grow(struct nss_packet *packet, size_t size) /* make sure we do not overflow */ if (totlen < len) { - int n = len % NSSSRV_PACKET_MEM_SIZE + 1; - totlen += n * NSSSRV_PACKET_MEM_SIZE; + int n = len % SSSSRV_PACKET_MEM_SIZE + 1; + totlen += n * SSSSRV_PACKET_MEM_SIZE; if (totlen < len) { return EINVAL; } @@ -132,7 +132,7 @@ int nss_packet_grow(struct nss_packet *packet, size_t size) return 0; } -int nss_packet_recv(struct nss_packet *packet, int fd) +int sss_packet_recv(struct sss_packet *packet, int fd) { size_t rb; size_t len; @@ -174,7 +174,7 @@ int nss_packet_recv(struct nss_packet *packet, int fd) return EOK; } -int nss_packet_send(struct nss_packet *packet, int fd) +int sss_packet_send(struct sss_packet *packet, int fd) { size_t rb; size_t len; @@ -203,18 +203,18 @@ int nss_packet_send(struct nss_packet *packet, int fd) return EOK; } -enum sss_nss_command nss_packet_get_cmd(struct nss_packet *packet) +enum sss_cli_command sss_packet_get_cmd(struct sss_packet *packet) { - return (enum sss_nss_command)(*packet->cmd); + return (enum sss_cli_command)(*packet->cmd); } -void nss_packet_get_body(struct nss_packet *packet, uint8_t **body, size_t *blen) +void sss_packet_get_body(struct sss_packet *packet, uint8_t **body, size_t *blen) { *body = packet->body; *blen = *packet->len - SSS_NSS_HEADER_SIZE; } -void nss_packet_set_error(struct nss_packet *packet, int error) +void sss_packet_set_error(struct sss_packet *packet, int error) { *(packet->status) = error; } diff --git a/server/responder/common/responder_packet.h b/server/responder/common/responder_packet.h new file mode 100644 index 000000000..1a8529466 --- /dev/null +++ b/server/responder/common/responder_packet.h @@ -0,0 +1,39 @@ +/* + SSSD + + SSS Client Responder, header file + + 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/>. +*/ + +#ifndef __SSSSRV_PACKET_H__ +#define __SSSSRV_PACKET_H__ + +#include "../sss_client/sss_cli.h" + +struct sss_packet; + +int sss_packet_new(TALLOC_CTX *mem_ctx, size_t size, + enum sss_cli_command cmd, + struct sss_packet **rpacket); +int sss_packet_grow(struct sss_packet *packet, size_t size); +int sss_packet_recv(struct sss_packet *packet, int fd); +int sss_packet_send(struct sss_packet *packet, int fd); +enum sss_cli_command sss_packet_get_cmd(struct sss_packet *packet); +void sss_packet_get_body(struct sss_packet *packet, uint8_t **body, size_t *blen); +void sss_packet_set_error(struct sss_packet *packet, int error); + +#endif /* __SSSSRV_PACKET_H__ */ diff --git a/server/nss/nsssrv.c b/server/responder/nss/nsssrv.c index c48aed4a3..93490c46d 100644 --- a/server/nss/nsssrv.c +++ b/server/responder/nss/nsssrv.c @@ -31,12 +31,13 @@ #include <errno.h> #include "popt.h" #include "util/util.h" -#include "nss/nsssrv.h" +#include "responder/nss/nsssrv.h" #include "db/sysdb.h" #include "confdb/confdb.h" #include "dbus/dbus.h" #include "sbus/sssd_dbus.h" #include "util/btreemap.h" +#include "responder/common/responder_packet.h" #include "providers/data_provider.h" #include "monitor/monitor_sbus.h" #include "monitor/monitor_interfaces.h" @@ -81,7 +82,7 @@ static void client_send(struct event_context *ev, struct cli_ctx *cctx) { int ret; - ret = nss_packet_send(cctx->creq->out, cctx->cfd); + ret = sss_packet_send(cctx->creq->out, cctx->cfd); if (ret == EAGAIN) { /* not all data was sent, loop again */ return; @@ -114,7 +115,7 @@ static void client_recv(struct event_context *ev, struct cli_ctx *cctx) } if (!cctx->creq->in) { - ret = nss_packet_new(cctx->creq, NSS_PACKET_MAX_RECV_SIZE, + ret = sss_packet_new(cctx->creq, NSS_PACKET_MAX_RECV_SIZE, 0, &cctx->creq->in); if (ret != EOK) { DEBUG(0, ("Failed to alloc request, aborting client!\n")); @@ -123,7 +124,7 @@ static void client_recv(struct event_context *ev, struct cli_ctx *cctx) } } - ret = nss_packet_recv(cctx->creq->in, cctx->cfd); + ret = sss_packet_recv(cctx->creq->in, cctx->cfd); switch (ret) { case EOK: /* do not read anymore */ diff --git a/server/nss/nsssrv.h b/server/responder/nss/nsssrv.h index 2352a5054..03dc35af2 100644 --- a/server/nss/nsssrv.h +++ b/server/responder/nss/nsssrv.h @@ -27,8 +27,10 @@ #include "talloc.h" #include "tevent.h" #include "ldb.h" -#include "../nss_client/sss_nss.h" +#include "../sss_client/sss_cli.h" #include "dbus/dbus.h" +#include "sbus/sssd_dbus.h" +#include "responder/common/responder_cmd.h" #define NSS_SBUS_SERVICE_VERSION 0x0001 #define NSS_SBUS_SERVICE_NAME "nss" @@ -61,6 +63,12 @@ struct nss_ctx { char *default_domain; int cache_timeout; + + struct sbus_method *sss_sbus_methods; + struct sss_cmd_table *sss_cmds; + const char *sss_pipe_name; + const char *confdb_socket_path; + struct sbus_method *dp_methods; }; struct cli_ctx { @@ -85,24 +93,12 @@ struct nss_packet; struct cli_request { /* original request from the wire */ - struct nss_packet *in; + struct sss_packet *in; /* reply data */ - struct nss_packet *out; + struct sss_packet *out; }; -/* from nsssrv_packet.c */ -int nss_packet_new(TALLOC_CTX *mem_ctx, size_t size, - enum sss_nss_command cmd, - struct nss_packet **rpacket); -int nss_packet_grow(struct nss_packet *packet, size_t size); -int nss_packet_recv(struct nss_packet *packet, int fd); -int nss_packet_send(struct nss_packet *packet, int fd); -enum sss_nss_command nss_packet_get_cmd(struct nss_packet *packet); -void nss_packet_get_body(struct nss_packet *packet, uint8_t **body, size_t *blen); -void nss_packet_set_error(struct nss_packet *packet, int error); - -/* from nsssrv_cmd.c */ int nss_cmd_execute(struct cli_ctx *cctx); /* from nsssrv_dp.c */ diff --git a/server/nss/nsssrv_cmd.c b/server/responder/nss/nsssrv_cmd.c index b16d27c22..338de0ead 100644 --- a/server/nss/nsssrv_cmd.c +++ b/server/responder/nss/nsssrv_cmd.c @@ -21,7 +21,8 @@ #include "util/util.h" #include "util/btreemap.h" -#include "nss/nsssrv.h" +#include "responder/common/responder_packet.h" +#include "responder/nss/nsssrv.h" #include "db/sysdb.h" #include <time.h> @@ -50,7 +51,7 @@ struct nss_dom_ctx { }; struct nss_cmd_table { - enum sss_nss_command cmd; + enum sss_cli_command cmd; int (*fn)(struct cli_ctx *cctx); }; @@ -70,14 +71,14 @@ static int nss_cmd_send_error(struct nss_cmd_ctx *cmdctx, int err) int ret; /* create response packet */ - ret = nss_packet_new(cctx->creq, 0, - nss_packet_get_cmd(cctx->creq->in), + ret = sss_packet_new(cctx->creq, 0, + sss_packet_get_cmd(cctx->creq->in), &cctx->creq->out); if (ret != EOK) { return ret; } - nss_packet_set_error(cctx->creq->out, err); + sss_packet_set_error(cctx->creq->out, err); return EOK; } @@ -146,14 +147,14 @@ static int nss_cmd_get_version(struct cli_ctx *cctx) cmdctx->cctx = cctx; /* create response packet */ - ret = nss_packet_new(cctx->creq, sizeof(uint32_t), - nss_packet_get_cmd(cctx->creq->in), + ret = sss_packet_new(cctx->creq, sizeof(uint32_t), + sss_packet_get_cmd(cctx->creq->in), &cctx->creq->out); if (ret != EOK) { return ret; } - nss_packet_get_body(cctx->creq->out, &body, &blen); - ((uint32_t *)body)[0] = SSS_NSS_VERSION; + sss_packet_get_body(cctx->creq->out, &body, &blen); + ((uint32_t *)body)[0] = SSS_PROTOCOL_VERSION; nss_cmd_done(cmdctx); return EOK; @@ -163,7 +164,7 @@ static int nss_cmd_get_version(struct cli_ctx *cctx) * PASSWD db related functions ***************************************************************************/ -static int fill_pwent(struct nss_packet *packet, +static int fill_pwent(struct sss_packet *packet, struct ldb_message **msgs, int count) { @@ -180,7 +181,7 @@ static int fill_pwent(struct nss_packet *packet, int i, ret, num; /* first 2 fields (len and reserved), filled up later */ - ret = nss_packet_grow(packet, 2*sizeof(uint32_t)); + ret = sss_packet_grow(packet, 2*sizeof(uint32_t)); rp = 2*sizeof(uint32_t); num = 0; @@ -206,12 +207,12 @@ static int fill_pwent(struct nss_packet *packet, s4 = strlen(shell) + 1; rsize = 2*sizeof(uint64_t) +s1 + 2 + s2 + s3 +s4; - ret = nss_packet_grow(packet, rsize); + ret = sss_packet_grow(packet, rsize); if (ret != EOK) { num = 0; goto done; } - nss_packet_get_body(packet, &body, &blen); + sss_packet_get_body(packet, &body, &blen); ((uint64_t *)(&body[rp]))[0] = uid; ((uint64_t *)(&body[rp]))[1] = gid; @@ -231,7 +232,7 @@ static int fill_pwent(struct nss_packet *packet, } done: - nss_packet_get_body(packet, &body, &blen); + sss_packet_get_body(packet, &body, &blen); ((uint32_t *)body)[0] = num; /* num results */ ((uint32_t *)body)[1] = 0; /* reserved */ @@ -292,7 +293,7 @@ static void nss_cmd_getpwnam_callback(void *ptr, int status, /* dont loop forever :-) */ dctx->check_provider = false; - timeout = SSS_NSS_SOCKET_TIMEOUT/2; + timeout = SSS_CLI_SOCKET_TIMEOUT/2; ret = nss_dp_send_acct_req(cctx->nctx, cmdctx, nss_cmd_getpwnam_dp_callback, dctx, @@ -315,28 +316,27 @@ static void nss_cmd_getpwnam_callback(void *ptr, int status, DEBUG(2, ("No results for getpwnam call\n")); - ret = nss_packet_new(cctx->creq, 2*sizeof(uint32_t), - nss_packet_get_cmd(cctx->creq->in), + ret = sss_packet_new(cctx->creq, 2*sizeof(uint32_t), + sss_packet_get_cmd(cctx->creq->in), &cctx->creq->out); if (ret != EOK) { NSS_CMD_FATAL_ERROR(cctx); } - nss_packet_get_body(cctx->creq->out, &body, &blen); + sss_packet_get_body(cctx->creq->out, &body, &blen); ((uint32_t *)body)[0] = 0; /* 0 results */ ((uint32_t *)body)[1] = 0; /* reserved */ break; case 1: /* create response packet */ - ret = nss_packet_new(cctx->creq, 0, - nss_packet_get_cmd(cctx->creq->in), + ret = sss_packet_new(cctx->creq, 0, + sss_packet_get_cmd(cctx->creq->in), &cctx->creq->out); if (ret != EOK) { NSS_CMD_FATAL_ERROR(cctx); } - ret = fill_pwent(cctx->creq->out, res->msgs, res->count); - nss_packet_set_error(cctx->creq->out, ret); + sss_packet_set_error(cctx->creq->out, ret); break; @@ -401,7 +401,7 @@ static int nss_cmd_getpwnam(struct cli_ctx *cctx) dctx->cmdctx = cmdctx; /* get user name to query */ - nss_packet_get_body(cctx->creq->in, &body, &blen); + sss_packet_get_body(cctx->creq->in, &body, &blen); /* if not terminated fail */ if (body[blen -1] != '\0') { talloc_free(cmdctx); @@ -503,7 +503,7 @@ static void nss_cmd_getpwuid_callback(void *ptr, int status, /* dont loop forever :-) */ dctx->check_provider = false; - timeout = SSS_NSS_SOCKET_TIMEOUT/2; + timeout = SSS_CLI_SOCKET_TIMEOUT/2; ret = nss_dp_send_acct_req(cctx->nctx, cmdctx, nss_cmd_getpwuid_dp_callback, dctx, @@ -530,28 +530,28 @@ static void nss_cmd_getpwuid_callback(void *ptr, int status, DEBUG(2, ("No results for getpwuid call\n")); - ret = nss_packet_new(cctx->creq, 2*sizeof(uint32_t), - nss_packet_get_cmd(cctx->creq->in), + ret = sss_packet_new(cctx->creq, 2*sizeof(uint32_t), + sss_packet_get_cmd(cctx->creq->in), &cctx->creq->out); if (ret != EOK) { NSS_CMD_FATAL_ERROR(cctx); } - nss_packet_get_body(cctx->creq->out, &body, &blen); + sss_packet_get_body(cctx->creq->out, &body, &blen); ((uint32_t *)body)[0] = 0; /* 0 results */ ((uint32_t *)body)[1] = 0; /* reserved */ break; case 1: /* create response packet */ - ret = nss_packet_new(cctx->creq, 0, - nss_packet_get_cmd(cctx->creq->in), + ret = sss_packet_new(cctx->creq, 0, + sss_packet_get_cmd(cctx->creq->in), &cctx->creq->out); if (ret != EOK) { NSS_CMD_FATAL_ERROR(cctx); } ret = fill_pwent(cctx->creq->out, res->msgs, res->count); - nss_packet_set_error(cctx->creq->out, ret); + sss_packet_set_error(cctx->creq->out, ret); break; @@ -622,7 +622,7 @@ static int nss_cmd_getpwuid(struct cli_ctx *cctx) cmdctx->cctx = cctx; /* get uid to query */ - nss_packet_get_body(cctx->creq->in, &body, &blen); + sss_packet_get_body(cctx->creq->in, &body, &blen); if (blen != sizeof(uint64_t)) { return EINVAL; @@ -708,13 +708,13 @@ static void nss_cmd_setpwent_callback(void *ptr, int status, if (status != LDB_SUCCESS) { /* create response packet */ - ret = nss_packet_new(cctx->creq, 0, - nss_packet_get_cmd(cctx->creq->in), + ret = sss_packet_new(cctx->creq, 0, + sss_packet_get_cmd(cctx->creq->in), &cctx->creq->out); if (ret != EOK) { NSS_CMD_FATAL_ERROR(cctx); } - nss_packet_set_error(cctx->creq->out, status); + sss_packet_set_error(cctx->creq->out, status); cmdctx->done = true; return; } @@ -747,8 +747,8 @@ static void nss_cmd_setpwent_callback(void *ptr, int status, } /* create response packet */ - ret = nss_packet_new(cctx->creq, 0, - nss_packet_get_cmd(cctx->creq->in), + ret = sss_packet_new(cctx->creq, 0, + sss_packet_get_cmd(cctx->creq->in), &cctx->creq->out); if (ret != EOK) { NSS_CMD_FATAL_ERROR(cctx); @@ -848,7 +848,7 @@ static int nss_cmd_setpwent_ext(struct cli_ctx *cctx, bool immediate) dctx->legacy = info->legacy; if (dctx->check_provider) { - timeout = SSS_NSS_SOCKET_TIMEOUT/(i+2); + timeout = SSS_CLI_SOCKET_TIMEOUT/(i+2); ret = nss_dp_send_acct_req(cctx->nctx, cmdctx, nss_cmd_setpw_dp_callback, dctx, timeout, domains[i], NSS_DP_USER, @@ -871,14 +871,14 @@ static int nss_cmd_setpwent_ext(struct cli_ctx *cctx, bool immediate) if (cmdctx->nr == 0) { /* create response packet */ - ret = nss_packet_new(cctx->creq, 0, - nss_packet_get_cmd(cctx->creq->in), + ret = sss_packet_new(cctx->creq, 0, + sss_packet_get_cmd(cctx->creq->in), &cctx->creq->out); if (ret != EOK) { return ret; } - nss_packet_set_error(cctx->creq->out, ret); + sss_packet_set_error(cctx->creq->out, ret); nss_cmd_done(cmdctx); return EOK; } @@ -921,29 +921,29 @@ static void nss_cmd_getpwent_callback(void *ptr, int status, int ret; /* get max num of entries to return in one call */ - nss_packet_get_body(cctx->creq->in, &body, &blen); + sss_packet_get_body(cctx->creq->in, &body, &blen); if (blen != sizeof(uint32_t)) { NSS_CMD_FATAL_ERROR(cctx); } num = *((uint32_t *)body); /* create response packet */ - ret = nss_packet_new(cctx->creq, 0, - nss_packet_get_cmd(cctx->creq->in), + ret = sss_packet_new(cctx->creq, 0, + sss_packet_get_cmd(cctx->creq->in), &cctx->creq->out); if (ret != EOK) { NSS_CMD_FATAL_ERROR(cctx); } if (status != LDB_SUCCESS) { - nss_packet_set_error(cctx->creq->out, status); + sss_packet_set_error(cctx->creq->out, status); goto done; } gctx->pwds = talloc_steal(gctx, res); ret = nss_cmd_retpwent(cctx, num); - nss_packet_set_error(cctx->creq->out, ret); + sss_packet_set_error(cctx->creq->out, ret); done: nss_cmd_done(cmdctx); @@ -961,7 +961,7 @@ static int nss_cmd_getpwent(struct cli_ctx *cctx) DEBUG(4, ("Requesting info for all accounts\n")); /* get max num of entries to return in one call */ - nss_packet_get_body(cctx->creq->in, &body, &blen); + sss_packet_get_body(cctx->creq->in, &body, &blen); if (blen != sizeof(uint32_t)) { return EINVAL; } @@ -989,15 +989,15 @@ static int nss_cmd_getpwent(struct cli_ctx *cctx) cmdctx->cctx = cctx; /* create response packet */ - ret = nss_packet_new(cctx->creq, 0, - nss_packet_get_cmd(cctx->creq->in), + ret = sss_packet_new(cctx->creq, 0, + sss_packet_get_cmd(cctx->creq->in), &cctx->creq->out); if (ret != EOK) { return ret; } ret = nss_cmd_retpwent(cctx, num); - nss_packet_set_error(cctx->creq->out, ret); + sss_packet_set_error(cctx->creq->out, ret); nss_cmd_done(cmdctx); return EOK; } @@ -1016,8 +1016,8 @@ static int nss_cmd_endpwent(struct cli_ctx *cctx) cmdctx->cctx = cctx; /* create response packet */ - ret = nss_packet_new(cctx->creq, 0, - nss_packet_get_cmd(cctx->creq->in), + ret = sss_packet_new(cctx->creq, 0, + sss_packet_get_cmd(cctx->creq->in), &cctx->creq->out); if (cctx->gctx == NULL) goto done; @@ -1037,7 +1037,7 @@ done: * GROUP db related functions ***************************************************************************/ -static int fill_grent(struct nss_packet *packet, +static int fill_grent(struct sss_packet *packet, struct ldb_message **msgs, int count) { @@ -1052,7 +1052,7 @@ static int fill_grent(struct nss_packet *packet, bool memnum_set = false; /* first 2 fields (len and reserved), filled up later */ - ret = nss_packet_grow(packet, 2*sizeof(uint32_t)); + ret = sss_packet_grow(packet, 2*sizeof(uint32_t)); rp = 2*sizeof(uint32_t); num = 0; @@ -1073,8 +1073,8 @@ static int fill_grent(struct nss_packet *packet, /* fill in gid and name and set pointer for number of members */ rsize = sizeof(uint64_t) + sizeof(uint32_t) + strlen(name)+1 +2; - ret = nss_packet_grow(packet, rsize); - nss_packet_get_body(packet, &body, &blen); + ret = sss_packet_grow(packet, rsize); + sss_packet_get_body(packet, &body, &blen); rp = blen - rsize; ((uint64_t *)(&body[rp]))[0] = gid; rp += sizeof(uint64_t); @@ -1097,19 +1097,19 @@ static int fill_grent(struct nss_packet *packet, for (j = 0; j < memnum; j++) { rsize = el->values[j].length + 1; - ret = nss_packet_grow(packet, rsize); + ret = sss_packet_grow(packet, rsize); if (ret != EOK) { num = 0; goto done; } - nss_packet_get_body(packet, &body, &blen); + sss_packet_get_body(packet, &body, &blen); rp = blen - rsize; memcpy(&body[rp], el->values[j].data, el->values[j].length); body[blen-1] = '\0'; } - nss_packet_get_body(packet, &body, &blen); + sss_packet_get_body(packet, &body, &blen); ((uint32_t *)(&body[mnump]))[0] = memnum; /* num members */ memnum_set = true; @@ -1128,7 +1128,7 @@ static int fill_grent(struct nss_packet *packet, * fail there if here start bogus entries */ get_group = true; i--; - nss_packet_get_body(packet, &body, &blen); + sss_packet_get_body(packet, &body, &blen); ((uint32_t *)(&body[mnump]))[0] = memnum; /* num members */ memnum_set = true; continue; @@ -1136,12 +1136,12 @@ static int fill_grent(struct nss_packet *packet, rsize = strlen(name) + 1; - ret = nss_packet_grow(packet, rsize); + ret = sss_packet_grow(packet, rsize); if (ret != EOK) { num = 0; goto done; } - nss_packet_get_body(packet, &body, &blen); + sss_packet_get_body(packet, &body, &blen); rp = blen - rsize; memcpy(&body[rp], name, rsize); @@ -1151,13 +1151,13 @@ static int fill_grent(struct nss_packet *packet, if (!memnum_set) { /* fill in the last group member count */ if (mnump != 0) { - nss_packet_get_body(packet, &body, &blen); + sss_packet_get_body(packet, &body, &blen); ((uint32_t *)(&body[mnump]))[0] = memnum; /* num members */ } } done: - nss_packet_get_body(packet, &body, &blen); + sss_packet_get_body(packet, &body, &blen); ((uint32_t *)body)[0] = num; /* num results */ ((uint32_t *)body)[1] = 0; /* reserved */ @@ -1210,7 +1210,7 @@ static void nss_cmd_getgrnam_callback(void *ptr, int status, /* dont loop forever :-) */ dctx->check_provider = false; - timeout = SSS_NSS_SOCKET_TIMEOUT/2; + timeout = SSS_CLI_SOCKET_TIMEOUT/2; ret = nss_dp_send_acct_req(cctx->nctx, cmdctx, nss_cmd_getgrnam_dp_callback, dctx, @@ -1234,13 +1234,13 @@ static void nss_cmd_getgrnam_callback(void *ptr, int status, DEBUG(2, ("No results for getgrnam call\n")); - ret = nss_packet_new(cctx->creq, 2*sizeof(uint32_t), - nss_packet_get_cmd(cctx->creq->in), + ret = sss_packet_new(cctx->creq, 2*sizeof(uint32_t), + sss_packet_get_cmd(cctx->creq->in), &cctx->creq->out); if (ret != EOK) { NSS_CMD_FATAL_ERROR(cctx); } - nss_packet_get_body(cctx->creq->out, &body, &blen); + sss_packet_get_body(cctx->creq->out, &body, &blen); ((uint32_t *)body)[0] = 0; /* 0 results */ ((uint32_t *)body)[1] = 0; /* reserved */ break; @@ -1250,15 +1250,15 @@ static void nss_cmd_getgrnam_callback(void *ptr, int status, DEBUG(6, ("Returning info for group [%s]\n", cmdctx->name)); /* create response packet */ - ret = nss_packet_new(cctx->creq, 0, - nss_packet_get_cmd(cctx->creq->in), + ret = sss_packet_new(cctx->creq, 0, + sss_packet_get_cmd(cctx->creq->in), &cctx->creq->out); if (ret != EOK) { NSS_CMD_FATAL_ERROR(cctx); } ret = fill_grent(cctx->creq->out, res->msgs, res->count); - nss_packet_set_error(cctx->creq->out, ret); + sss_packet_set_error(cctx->creq->out, ret); } done: @@ -1314,7 +1314,7 @@ static int nss_cmd_getgrnam(struct cli_ctx *cctx) dctx->cmdctx = cmdctx; /* get user name to query */ - nss_packet_get_body(cctx->creq->in, &body, &blen); + sss_packet_get_body(cctx->creq->in, &body, &blen); /* if not terminated fail */ if (body[blen -1] != '\0') { talloc_free(cmdctx); @@ -1407,7 +1407,7 @@ static void nss_cmd_getgrgid_callback(void *ptr, int status, /* dont loop forever :-) */ dctx->check_provider = false; - timeout = SSS_NSS_SOCKET_TIMEOUT/2; + timeout = SSS_CLI_SOCKET_TIMEOUT/2; ret = nss_dp_send_acct_req(cctx->nctx, cmdctx, nss_cmd_getgrgid_dp_callback, dctx, @@ -1434,13 +1434,13 @@ static void nss_cmd_getgrgid_callback(void *ptr, int status, DEBUG(2, ("No results for getgrgid call\n")); - ret = nss_packet_new(cctx->creq, 2*sizeof(uint32_t), - nss_packet_get_cmd(cctx->creq->in), + ret = sss_packet_new(cctx->creq, 2*sizeof(uint32_t), + sss_packet_get_cmd(cctx->creq->in), &cctx->creq->out); if (ret != EOK) { NSS_CMD_FATAL_ERROR(cctx); } - nss_packet_get_body(cctx->creq->out, &body, &blen); + sss_packet_get_body(cctx->creq->out, &body, &blen); ((uint32_t *)body)[0] = 0; /* 0 results */ ((uint32_t *)body)[1] = 0; /* reserved */ break; @@ -1450,15 +1450,15 @@ static void nss_cmd_getgrgid_callback(void *ptr, int status, DEBUG(6, ("Returning info for group [%u]\n", (unsigned)cmdctx->id)); /* create response packet */ - ret = nss_packet_new(cctx->creq, 0, - nss_packet_get_cmd(cctx->creq->in), + ret = sss_packet_new(cctx->creq, 0, + sss_packet_get_cmd(cctx->creq->in), &cctx->creq->out); if (ret != EOK) { NSS_CMD_FATAL_ERROR(cctx); } ret = fill_grent(cctx->creq->out, res->msgs, res->count); - nss_packet_set_error(cctx->creq->out, ret); + sss_packet_set_error(cctx->creq->out, ret); } done: @@ -1516,7 +1516,7 @@ static int nss_cmd_getgrgid(struct cli_ctx *cctx) cmdctx->cctx = cctx; /* get uid to query */ - nss_packet_get_body(cctx->creq->in, &body, &blen); + sss_packet_get_body(cctx->creq->in, &body, &blen); if (blen != sizeof(uint64_t)) { return EINVAL; @@ -1601,13 +1601,13 @@ static void nss_cmd_setgrent_callback(void *ptr, int status, if (status != LDB_SUCCESS) { /* create response packet */ - ret = nss_packet_new(cctx->creq, 0, - nss_packet_get_cmd(cctx->creq->in), + ret = sss_packet_new(cctx->creq, 0, + sss_packet_get_cmd(cctx->creq->in), &cctx->creq->out); if (ret != EOK) { NSS_CMD_FATAL_ERROR(cctx); } - nss_packet_set_error(cctx->creq->out, status); + sss_packet_set_error(cctx->creq->out, status); cmdctx->done = true; return; } @@ -1639,8 +1639,8 @@ static void nss_cmd_setgrent_callback(void *ptr, int status, } /* create response packet */ - ret = nss_packet_new(cctx->creq, 0, - nss_packet_get_cmd(cctx->creq->in), + ret = sss_packet_new(cctx->creq, 0, + sss_packet_get_cmd(cctx->creq->in), &cctx->creq->out); if (ret != EOK) { NSS_CMD_FATAL_ERROR(cctx); @@ -1740,7 +1740,7 @@ static int nss_cmd_setgrent_ext(struct cli_ctx *cctx, bool immediate) dctx->legacy = info->legacy; if (dctx->check_provider) { - timeout = SSS_NSS_SOCKET_TIMEOUT/(i+2); + timeout = SSS_CLI_SOCKET_TIMEOUT/(i+2); ret = nss_dp_send_acct_req(cctx->nctx, cmdctx, nss_cmd_setgr_dp_callback, dctx, timeout, domains[i], NSS_DP_GROUP, @@ -1762,14 +1762,14 @@ static int nss_cmd_setgrent_ext(struct cli_ctx *cctx, bool immediate) if (cmdctx->nr == 0) { /* create response packet */ - ret = nss_packet_new(cctx->creq, 0, - nss_packet_get_cmd(cctx->creq->in), + ret = sss_packet_new(cctx->creq, 0, + sss_packet_get_cmd(cctx->creq->in), &cctx->creq->out); if (ret != EOK) { return ret; } - nss_packet_set_error(cctx->creq->out, ret); + sss_packet_set_error(cctx->creq->out, ret); nss_cmd_done(cmdctx); return EOK; } @@ -1811,7 +1811,7 @@ static void nss_cmd_getgrent_callback(void *ptr, int status, int ret; /* get max num of entries to return in one call */ - nss_packet_get_body(cctx->creq->in, &body, &blen); + sss_packet_get_body(cctx->creq->in, &body, &blen); if (blen != sizeof(uint32_t)) { ret = nss_cmd_send_error(cmdctx, EIO); if (ret != EOK) { @@ -1822,22 +1822,22 @@ static void nss_cmd_getgrent_callback(void *ptr, int status, num = *((uint32_t *)body); /* create response packet */ - ret = nss_packet_new(cctx->creq, 0, - nss_packet_get_cmd(cctx->creq->in), + ret = sss_packet_new(cctx->creq, 0, + sss_packet_get_cmd(cctx->creq->in), &cctx->creq->out); if (ret != EOK) { NSS_CMD_FATAL_ERROR(cctx); } if (status != LDB_SUCCESS) { - nss_packet_set_error(cctx->creq->out, status); + sss_packet_set_error(cctx->creq->out, status); goto done; } gctx->grps = talloc_steal(gctx, res); ret = nss_cmd_retgrent(cctx, num); - nss_packet_set_error(cctx->creq->out, ret); + sss_packet_set_error(cctx->creq->out, ret); done: nss_cmd_done(cmdctx); @@ -1855,7 +1855,7 @@ static int nss_cmd_getgrent(struct cli_ctx *cctx) DEBUG(4, ("Requesting info for all groups\n")); /* get max num of entries to return in one call */ - nss_packet_get_body(cctx->creq->in, &body, &blen); + sss_packet_get_body(cctx->creq->in, &body, &blen); if (blen != sizeof(uint32_t)) { return EINVAL; } @@ -1883,15 +1883,15 @@ static int nss_cmd_getgrent(struct cli_ctx *cctx) cmdctx->cctx = cctx; /* create response packet */ - ret = nss_packet_new(cctx->creq, 0, - nss_packet_get_cmd(cctx->creq->in), + ret = sss_packet_new(cctx->creq, 0, + sss_packet_get_cmd(cctx->creq->in), &cctx->creq->out); if (ret != EOK) { return ret; } ret = nss_cmd_retgrent(cctx, num); - nss_packet_set_error(cctx->creq->out, ret); + sss_packet_set_error(cctx->creq->out, ret); nss_cmd_done(cmdctx); return EOK; } @@ -1910,8 +1910,8 @@ static int nss_cmd_endgrent(struct cli_ctx *cctx) cmdctx->cctx = cctx; /* create response packet */ - ret = nss_packet_new(cctx->creq, 0, - nss_packet_get_cmd(cctx->creq->in), + ret = sss_packet_new(cctx->creq, 0, + sss_packet_get_cmd(cctx->creq->in), &cctx->creq->out); if (cctx->gctx == NULL) goto done; @@ -1939,33 +1939,33 @@ static void nss_cmd_initgr_callback(void *ptr, int status, int ret, i; /* create response packet */ - ret = nss_packet_new(cctx->creq, 0, - nss_packet_get_cmd(cctx->creq->in), + ret = sss_packet_new(cctx->creq, 0, + sss_packet_get_cmd(cctx->creq->in), &cctx->creq->out); if (ret != EOK) { NSS_CMD_FATAL_ERROR(cctx); } if (status != LDB_SUCCESS) { - nss_packet_set_error(cctx->creq->out, status); + sss_packet_set_error(cctx->creq->out, status); goto done; } num = res->count; /* the first 64 bit uint is really 2 32 units used to hold the number of * results */ - ret = nss_packet_grow(cctx->creq->out, (1 + num) * sizeof(uint64_t)); + ret = sss_packet_grow(cctx->creq->out, (1 + num) * sizeof(uint64_t)); if (ret != EOK) { - nss_packet_set_error(cctx->creq->out, ret); + sss_packet_set_error(cctx->creq->out, ret); goto done; } - nss_packet_get_body(cctx->creq->out, &body, &blen); + sss_packet_get_body(cctx->creq->out, &body, &blen); for (i = 0; i < num; i++) { gid = ldb_msg_find_attr_as_uint64(res->msgs[i], SYSDB_GR_GIDNUM, 0); if (!gid) { DEBUG(1, ("Incomplete group object for initgroups! Aborting\n")); - nss_packet_set_error(cctx->creq->out, EIO); + sss_packet_set_error(cctx->creq->out, EIO); num = 0; goto done; } @@ -2084,7 +2084,7 @@ static void nss_cmd_getinit_callback(void *ptr, int status, /* dont loop forever :-) */ dctx->check_provider = false; - timeout = SSS_NSS_SOCKET_TIMEOUT/2; + timeout = SSS_CLI_SOCKET_TIMEOUT/2; ret = nss_dp_send_acct_req(cctx->nctx, cmdctx, nss_cmd_getinitnam_callback, dctx, @@ -2108,20 +2108,20 @@ static void nss_cmd_getinit_callback(void *ptr, int status, DEBUG(2, ("No results for initgroups call\n")); - ret = nss_packet_new(cctx->creq, 2*sizeof(uint32_t), - nss_packet_get_cmd(cctx->creq->in), + ret = sss_packet_new(cctx->creq, 2*sizeof(uint32_t), + sss_packet_get_cmd(cctx->creq->in), &cctx->creq->out); if (ret != EOK) { NSS_CMD_FATAL_ERROR(cctx); } - nss_packet_get_body(cctx->creq->out, &body, &blen); + sss_packet_get_body(cctx->creq->out, &body, &blen); ((uint32_t *)body)[0] = 0; /* 0 results */ ((uint32_t *)body)[1] = 0; /* reserved */ break; case 1: - timeout = SSS_NSS_SOCKET_TIMEOUT/2; + timeout = SSS_CLI_SOCKET_TIMEOUT/2; ret = nss_dp_send_acct_req(cctx->nctx, cmdctx, nss_cmd_getinitgr_callback, dctx, timeout, dctx->domain, NSS_DP_INITGROUPS, @@ -2170,7 +2170,7 @@ static int nss_cmd_initgroups(struct cli_ctx *cctx) dctx->cmdctx = cmdctx; /* get user name to query */ - nss_packet_get_body(cctx->creq->in, &body, &blen); + sss_packet_get_body(cctx->creq->in, &body, &blen); cmdctx->name = (const char *)body; /* if not terminated fail */ if (cmdctx->name[blen -1] != '\0') { @@ -2203,8 +2203,9 @@ static int nss_cmd_initgroups(struct cli_ctx *cctx) return EOK; } +struct nss_cmd_table sss_cmds[] = {}; struct nss_cmd_table nss_cmds[] = { - {SSS_NSS_GET_VERSION, nss_cmd_get_version}, + {SSS_GET_VERSION, nss_cmd_get_version}, {SSS_NSS_GETPWNAM, nss_cmd_getpwnam}, {SSS_NSS_GETPWUID, nss_cmd_getpwuid}, {SSS_NSS_SETPWENT, nss_cmd_setpwent}, @@ -2216,17 +2217,17 @@ struct nss_cmd_table nss_cmds[] = { {SSS_NSS_GETGRENT, nss_cmd_getgrent}, {SSS_NSS_ENDGRENT, nss_cmd_endgrent}, {SSS_NSS_INITGR, nss_cmd_initgroups}, - {SSS_NSS_NULL, NULL} + {SSS_CLI_NULL, NULL} }; int nss_cmd_execute(struct cli_ctx *cctx) { - enum sss_nss_command cmd; + enum sss_cli_command cmd; int i; - cmd = nss_packet_get_cmd(cctx->creq->in); + cmd = sss_packet_get_cmd(cctx->creq->in); - for (i = 0; nss_cmds[i].cmd != SSS_NSS_NULL; i++) { + for (i = 0; nss_cmds[i].cmd != SSS_CLI_NULL; i++) { if (cmd == nss_cmds[i].cmd) { return nss_cmds[i].fn(cctx); } diff --git a/server/nss/nsssrv_dp.c b/server/responder/nss/nsssrv_dp.c index ec8aea8b1..46e218014 100644 --- a/server/nss/nsssrv_dp.c +++ b/server/responder/nss/nsssrv_dp.c @@ -22,7 +22,8 @@ #include <sys/time.h> #include <time.h> #include "util/util.h" -#include "nss/nsssrv.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" diff --git a/server/responder/pam/pamsrv.c b/server/responder/pam/pamsrv.c new file mode 100644 index 000000000..b6593bcff --- /dev/null +++ b/server/responder/pam/pamsrv.c @@ -0,0 +1,171 @@ +/* + SSSD + + PAM Responder + + 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 <stdio.h> +#include <unistd.h> +#include <fcntl.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <sys/socket.h> +#include <sys/un.h> +#include <string.h> +#include <sys/time.h> +#include <errno.h> +#include "popt.h" +#include "util/util.h" +#include "db/sysdb.h" +#include "confdb/confdb.h" +#include "dbus/dbus.h" +#include "sbus/sssd_dbus.h" +#include "util/btreemap.h" +#include "responder/common/responder_packet.h" +#include "responder/common/responder_cmd.h" +#include "responder/common/responder_common.h" +#include "providers/data_provider.h" +#include "monitor/monitor_sbus.h" +#include "monitor/monitor_interfaces.h" +#include "sbus/sbus_client.h" +#include "responder/pam/pamsrv.h" + +#define SSS_PAM_PIPE_NAME "pam" +#define PAM_SBUS_SERVICE_VERSION 0x0001 +#define PAM_SBUS_SERVICE_NAME "pam" +#define CONFDB_SOCKET_PATH "config/services/pam" + +static int service_identity(DBusMessage *message, struct sbus_conn_ctx *sconn); +static int service_pong(DBusMessage *message, struct sbus_conn_ctx *sconn); +static int service_reload(DBusMessage *message, struct sbus_conn_ctx *sconn); + +struct sbus_method sss_sbus_methods[] = { + {SERVICE_METHOD_IDENTITY, service_identity}, + {SERVICE_METHOD_PING, service_pong}, + {SERVICE_METHOD_RELOAD, service_reload}, + {NULL, NULL} +}; + +static int service_identity(DBusMessage *message, struct sbus_conn_ctx *sconn) +{ + dbus_uint16_t version = PAM_SBUS_SERVICE_VERSION; + const char *name = PAM_SBUS_SERVICE_NAME; + DBusMessage *reply; + dbus_bool_t ret; + + DEBUG(4,("Sending ID reply: (%s,%d)\n", name, version)); + + reply = dbus_message_new_method_return(message); + if (!reply) return ENOMEM; + + ret = dbus_message_append_args(reply, + DBUS_TYPE_STRING, &name, + DBUS_TYPE_UINT16, &version, + 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; +} + +static int service_pong(DBusMessage *message, struct sbus_conn_ctx *sconn) +{ + DBusMessage *reply; + dbus_bool_t ret; + + reply = dbus_message_new_method_return(message); + if (!reply) return ENOMEM; + + ret = dbus_message_append_args(reply, DBUS_TYPE_INVALID); + if (!ret) { + return EIO; + } + + /* send reply back */ + sbus_conn_send_reply(sconn, reply); + dbus_message_unref(reply); + + return EOK; +} + +static int service_reload(DBusMessage *message, struct sbus_conn_ctx *sconn) { + /* Monitor calls this function when we need to reload + * our configuration information. Perform whatever steps + * are needed to update the configuration objects. + */ + + /* Send an empty reply to acknowledge receipt */ + return service_pong(message, sconn); +} + +int main(int argc, const char *argv[]) +{ + int opt; + poptContext pc; + struct main_context *main_ctx; + int ret; + struct sbus_method *pam_dp_methods; + struct sss_cmd_table *sss_cmds; + + struct poptOption long_options[] = { + POPT_AUTOHELP + SSSD_MAIN_OPTS + { NULL } + }; + + pc = poptGetContext(argv[0], argc, argv, long_options, 0); + while((opt = poptGetNextOpt(pc)) != -1) { + switch(opt) { + default: + fprintf(stderr, "\nInvalid option %s: %s\n\n", + poptBadOption(pc, 0), poptStrerror(opt)); + poptPrintUsage(pc, stderr, 0); + return 1; + } + } + + poptFreeContext(pc); + + /* set up things like debug , signals, daemonization, etc... */ + ret = server_setup("sssd[pam]", 0, &main_ctx); + if (ret != EOK) return 2; + + pam_dp_methods = register_pam_dp_methods(); + sss_cmds = register_sss_cmds(); + ret = sss_process_init(main_ctx, + main_ctx->event_ctx, + main_ctx->confdb_ctx, + sss_sbus_methods, + sss_cmds, + SSS_PAM_PIPE_NAME, + CONFDB_SOCKET_PATH, + pam_dp_methods); + if (ret != EOK) return 3; + + /* loop on main */ + server_loop(main_ctx); + + return 0; +} + diff --git a/server/responder/pam/pamsrv.h b/server/responder/pam/pamsrv.h new file mode 100644 index 000000000..bb0082acc --- /dev/null +++ b/server/responder/pam/pamsrv.h @@ -0,0 +1,33 @@ +#include "sbus/sssd_dbus.h" +#include "responder/common/responder_cmd.h" + +#define PAM_DP_TIMEOUT 5000 + +#define DEBUG_PAM_DATA(level, pd) do { \ + if (level <= debug_level) pam_print_data(level, pd); \ +} while(0); + +struct pam_data { + int cmd; + uint32_t authtok_type; + uint32_t authtok_size; + uint32_t newauthtok_type; + uint32_t newauthtok_size; + char *domain; + char *user; + char *service; + char *tty; + char *ruser; + char *rhost; + uint8_t *authtok; + uint8_t *newauthtok; +}; + +void pam_print_data(int l, struct pam_data *pd); + +typedef void (*pam_dp_callback_t)(struct cli_ctx *cctx, int pam_status, char *domain); + +struct sbus_method *register_pam_dp_methods(void); +struct sss_cmd_table *register_sss_cmds(void); +int pam_dp_send_req(struct cli_ctx *cctx, pam_dp_callback_t callback, + int timeout, struct pam_data *pd); diff --git a/server/responder/pam/pamsrv_cmd.c b/server/responder/pam/pamsrv_cmd.c new file mode 100644 index 000000000..4fdded309 --- /dev/null +++ b/server/responder/pam/pamsrv_cmd.c @@ -0,0 +1,196 @@ +#include <errno.h> +#include <talloc.h> + +#include "util/util.h" +#include "responder/common/responder_common.h" +#include "responder/common/responder_cmd.h" +#include "responder/common/responder_packet.h" +#include "responder/pam/pamsrv.h" + +static int pam_parse_in_data(uint8_t *body, size_t blen, struct pam_data *pd) { + int start; + int end; + int last=blen-1; + char *delim; + + start = end = 0; + while ( end < last && body[end++]!='\0'); + pd->user = (char *) &body[start]; + + delim = strchr(pd->user, SSS_DOMAIN_DELIM); + if (delim != NULL ) { + *delim = '\0'; + pd->domain = delim+1; + } else { + pd->domain = NULL; + } + + start = end; + while ( end < last && body[end++]!='\0'); + pd->service = (char *) &body[start]; + + start = end; + while ( end < last && body[end++]!='\0'); + pd->tty = (char *) &body[start]; + + start = end; + while ( end < last && body[end++]!='\0'); + pd->ruser = (char *) &body[start]; + + start = end; + while ( end < last && body[end++]!='\0'); + pd->rhost = (char *) &body[start]; + + start = end; + pd->authtok_type = (int) body[start]; + start += sizeof(uint32_t); + pd->authtok_size = (int) body[start]; + start += sizeof(uint32_t); + end = start+pd->authtok_size; + if ( pd->authtok_size == 0 ) { + pd->authtok = NULL; + } else { + if ( end <= blen ) { + pd->authtok = (uint8_t *) &body[start]; + } else { + DEBUG(1, ("Invalid authtok size: %d\n", pd->authtok_size)); + return EINVAL; + } + } + + start = end; + pd->newauthtok_type = (int) body[start]; + start += sizeof(uint32_t); + pd->newauthtok_size = (int) body[start]; + start += sizeof(uint32_t); + end = start+pd->newauthtok_size; + if ( pd->newauthtok_size == 0 ) { + pd->newauthtok = NULL; + } else { + if ( end <= blen ) { + pd->newauthtok = (uint8_t *) &body[start]; + } else { + DEBUG(1, ("Invalid newauthtok size: %d\n", pd->newauthtok_size)); + return EINVAL; + } + } + + DEBUG_PAM_DATA(4, pd); + + return EOK; +} + +static void pam_reply(struct cli_ctx *cctx, int pam_status, char *domain) { + struct sss_cmd_ctx *nctx; + int32_t ret_status = pam_status; + uint8_t *body; + size_t blen; + int ret; + int err = EOK; + + DEBUG(4, ("pam_reply get called.\n")); + nctx = talloc_zero(cctx, struct sss_cmd_ctx); + if (!nctx) { + err = ENOMEM; + goto done; + } + nctx->cctx = cctx; + nctx->check_expiration = true; + + ret = sss_packet_new(cctx->creq, 0, sss_packet_get_cmd(cctx->creq->in), + &cctx->creq->out); + if (ret != EOK) { + err = ret; + goto done; + } + + ret = sss_packet_grow(cctx->creq->out, sizeof(int) + strlen(domain)+1 ); + if (ret != EOK) { + err = ret; + goto done; + } + + sss_packet_get_body(cctx->creq->out, &body, &blen); + DEBUG(4, ("blen: %d\n", blen)); + memcpy(body, &ret_status, sizeof(int32_t)); + memcpy(body+sizeof(int32_t), domain, strlen(domain)+1); + +done: + sss_cmd_done(nctx); +} + +static int pam_forwarder(struct cli_ctx *cctx, int pam_cmd) +{ + uint8_t *body; + size_t blen; + int ret; + struct pam_data *pd; + + pd = talloc(cctx, struct pam_data); + if (pd == NULL) return ENOMEM; + + sss_packet_get_body(cctx->creq->in, &body, &blen); + if (blen >= sizeof(uint32_t) && + ((uint32_t *)(&body[blen - sizeof(uint32_t)]))[0] != END_OF_PAM_REQUEST) { + DEBUG(1, ("Received data not terminated.\n")); + talloc_free(pd); + return EINVAL; + } + + pd->cmd = pam_cmd; + ret=pam_parse_in_data(body, blen, pd); + if( ret != 0 ) { + talloc_free(pd); + return EINVAL; + } + + ret=pam_dp_send_req(cctx, pam_reply, PAM_DP_TIMEOUT, pd); + DEBUG(4, ("pam_dp_send_req returned %d\n", ret)); + + return ret; +} + +static int pam_cmd_authenticate(struct cli_ctx *cctx) { + DEBUG(4, ("entering pam_cmd_authenticate\n")); + return pam_forwarder(cctx, SSS_PAM_AUTHENTICATE); +} + +static int pam_cmd_setcred(struct cli_ctx *cctx) { + DEBUG(4, ("entering pam_cmd_setcred\n")); + return pam_forwarder(cctx, SSS_PAM_SETCRED); +} + +static int pam_cmd_acct_mgmt(struct cli_ctx *cctx) { + DEBUG(4, ("entering pam_cmd_acct_mgmt\n")); + return pam_forwarder(cctx, SSS_PAM_ACCT_MGMT); +} + +static int pam_cmd_open_session(struct cli_ctx *cctx) { + DEBUG(4, ("entering pam_cmd_open_session\n")); + return pam_forwarder(cctx, SSS_PAM_OPEN_SESSION); +} + +static int pam_cmd_close_session(struct cli_ctx *cctx) { + DEBUG(4, ("entering pam_cmd_close_session\n")); + return pam_forwarder(cctx, SSS_PAM_CLOSE_SESSION); +} + +static int pam_cmd_chauthtok(struct cli_ctx *cctx) { + DEBUG(4, ("entering pam_cmd_chauthtok\n")); + return pam_forwarder(cctx, SSS_PAM_CHAUTHTOK); +} + +struct sss_cmd_table *register_sss_cmds(void) { + static struct sss_cmd_table sss_cmds[] = { + {SSS_GET_VERSION, sss_cmd_get_version}, + {SSS_PAM_AUTHENTICATE, pam_cmd_authenticate}, + {SSS_PAM_SETCRED, pam_cmd_setcred}, + {SSS_PAM_ACCT_MGMT, pam_cmd_acct_mgmt}, + {SSS_PAM_OPEN_SESSION, pam_cmd_open_session}, + {SSS_PAM_CLOSE_SESSION, pam_cmd_close_session}, + {SSS_PAM_CHAUTHTOK, pam_cmd_chauthtok}, + {SSS_CLI_NULL, NULL} + }; + + return sss_cmds; +} diff --git a/server/responder/pam/pamsrv_dp.c b/server/responder/pam/pamsrv_dp.c new file mode 100644 index 000000000..8a10c6bd7 --- /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; +} diff --git a/server/responder/pam/pamsrv_util.c b/server/responder/pam/pamsrv_util.c new file mode 100644 index 000000000..5dab9b679 --- /dev/null +++ b/server/responder/pam/pamsrv_util.c @@ -0,0 +1,16 @@ +#include "util/util.h" +#include "responder/pam/pamsrv.h" + +void pam_print_data(int l, struct pam_data *pd) { + DEBUG(l, ("command: %d\n", pd->cmd)); + DEBUG(l, ("domain: %s\n", pd->domain)); + DEBUG(l, ("user: %s\n", pd->user)); + DEBUG(l, ("service: %s\n", pd->service)); + DEBUG(l, ("tty: %s\n", pd->tty)); + DEBUG(l, ("ruser: %s\n", pd->ruser)); + DEBUG(l, ("rhost: %s\n", pd->rhost)); + DEBUG(l, ("authtok type: %d\n", pd->authtok_type)); + DEBUG(l, ("authtok size: %d\n", pd->authtok_size)); + DEBUG(l, ("newauthtok type: %d\n", pd->newauthtok_type)); + DEBUG(l, ("newauthtok size: %d\n", pd->newauthtok_size)); +} diff --git a/server/server.mk b/server/server.mk index 744dc243d..386f56f16 100644 --- a/server/server.mk +++ b/server/server.mk @@ -15,6 +15,12 @@ UTIL_OBJ = \ db/sysdb.o \ db/sysdb_sync.o +RESPONDER_UTIL_OBJ = \ + responder/common/responder_dp.o \ + responder/common/responder_packet.o \ + responder/common/responder_common.o \ + responder/common/responder_cmd.o + SERVER_OBJ = \ monitor/monitor.o @@ -27,11 +33,13 @@ DP_BE_OBJ = \ PROXY_BE_OBJ = \ providers/proxy.o +LDAP_BE_OBJ = \ + providers/ldap_be.o + NSSSRV_OBJ = \ - nss/nsssrv.o \ - nss/nsssrv_packet.o \ - nss/nsssrv_cmd.o \ - nss/nsssrv_dp.o + responder/nss/nsssrv.o \ + responder/nss/nsssrv_cmd.o \ + responder/nss/nsssrv_dp.o INFOPIPE_OBJ = \ infopipe/infopipe.o \ @@ -51,17 +59,29 @@ SYSDB_TEST_OBJ = \ INFP_TEST_OBJ = \ tests/infopipe-tests.o +PAMSRV_OBJ = \ + responder/pam/pamsrv.o \ + responder/pam/pamsrv_cmd.o \ + responder/pam/pamsrv_dp.o + +PAMSRV_UTIL_OBJ = responder/pam/pamsrv_util.o + +PAM = -lpam + sbin/sssd: $(SERVER_OBJ) $(UTIL_OBJ) $(CC) -o sbin/sssd $(SERVER_OBJ) $(UTIL_OBJ) $(LDFLAGS) $(LIBS) -sbin/sssd_nss: $(NSSSRV_OBJ) $(UTIL_OBJ) - $(CC) -o sbin/sssd_nss $(NSSSRV_OBJ) $(UTIL_OBJ) $(LDFLAGS) $(LIBS) +sbin/sssd_nss: $(NSSSRV_OBJ) $(UTIL_OBJ) $(RESPONDER_UTIL_OBJ) + $(CC) -o sbin/sssd_nss $(NSSSRV_OBJ) $(UTIL_OBJ) $(RESPONDER_UTIL_OBJ) $(LDFLAGS) $(LIBS) + +sbin/sssd_pam: $(PAMSRV_OBJ) $(UTIL_OBJ) $(RESPONDER_UTIL_OBJ) $(PAMSRV_UTIL_OBJ) + $(CC) -o sbin/sssd_pam $(PAMSRV_OBJ) $(UTIL_OBJ) $(PAMSRV_UTIL_OBJ) $(RESPONDER_UTIL_OBJ) $(LDFLAGS) $(LIBS) -sbin/sssd_dp: $(DP_OBJ) $(UTIL_OBJ) - $(CC) -o sbin/sssd_dp $(DP_OBJ) $(UTIL_OBJ) $(LDFLAGS) $(LIBS) +sbin/sssd_dp: $(DP_OBJ) $(UTIL_OBJ) $(PAMSRV_UTIL_OBJ) + $(CC) -o sbin/sssd_dp $(DP_OBJ) $(UTIL_OBJ) $(PAMSRV_UTIL_OBJ) $(LDFLAGS) $(LIBS) sbin/sssd_be: $(DP_BE_OBJ) $(UTIL_OBJ) - $(CC) -Wl,-E -o sbin/sssd_be $(DP_BE_OBJ) $(UTIL_OBJ) $(LDFLAGS) $(LIBS) + $(CC) -Wl,-E -o sbin/sssd_be $(DP_BE_OBJ) $(UTIL_OBJ) $(PAMSRV_UTIL_OBJ) $(LDFLAGS) $(LIBS) $(PAM) sbin/sssd_info: $(INFOPIPE_OBJ) $(UTIL_OBJ) $(CC) -o sbin/sssd_info $(INFOPIPE_OBJ) $(UTIL_OBJ) $(LDFLAGS) $(LIBS) @@ -70,9 +90,13 @@ sbin/sssd_pk: $(POLKIT_OBJ) $(UTIL_OBJ) $(CC) -o sbin/sssd_pk $(POLKIT_OBJ) $(UTIL_OBJ) $(LDFLAGS) $(LIBS) lib/$(PROXY_BE_SOBASE): $(PROXY_BE_OBJ) - $(SHLD) $(SHLD_FLAGS) $(SONAMEFLAG)$(PROXY_BE_SONAME) -o lib/$(PROXY_BE_SOLIB) $(PROXY_BE_OBJ) $(LDFLAGS) $(LIBS) + $(SHLD) $(SHLD_FLAGS) $(SONAMEFLAG)$(PROXY_BE_SONAME) -o lib/$(PROXY_BE_SOLIB) $(PROXY_BE_OBJ) $(LDFLAGS) $(LIBS) $(PAM_LIBS) ln -fs $(PROXY_BE_SOLIB) $@ +lib/$(LDAP_BE_SOBASE): $(LDAP_BE_OBJ) + $(SHLD) $(SHLD_FLAGS) $(SONAMEFLAG)$(LDAP_BE_SONAME) -o lib/$(LDAP_BE_SOLIB) $(LDAP_BE_OBJ) $(LDFLAGS) $(LIBS) $(LDAP_LIBS) + ln -fs $(LDAP_BE_SOLIB) $@ + lib/$(MEMBEROF_SOBASE): $(MEMBEROF_OBJ) $(SHLD) $(SHLD_FLAGS) $(SONAMEFLAG)$(MEMBEROF_SONAME) -o lib/$(MEMBEROF_SOLIB) $(MEMBEROF_OBJ) $(LDFLAGS) $(LDB_LIBS) ln -fs $(MEMBEROF_SOLIB) $@ |