diff --git a/lib/cib/cib_remote.c b/lib/cib/cib_remote.c index 8a0a53536d..a0bd40c00d 100644 --- a/lib/cib/cib_remote.c +++ b/lib/cib/cib_remote.c @@ -1,643 +1,648 @@ /* * Copyright (c) 2008 Andrew Beekhof * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA * */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef HAVE_GNUTLS_GNUTLS_H # undef KEYFILE # include extern gnutls_anon_client_credentials anon_cred_c; extern gnutls_session *create_tls_session(int csock, int type); const int kx_prio[] = { GNUTLS_KX_ANON_DH, 0 }; #else typedef void gnutls_session; #endif #include #include #define DH_BITS 1024 struct remote_connection_s { int socket; gboolean encrypted; gnutls_session *session; GFDSource *source; char *token; }; typedef struct cib_remote_opaque_s { int flags; int socket; int port; char *server; char *user; char *passwd; struct remote_connection_s command; struct remote_connection_s callback; } cib_remote_opaque_t; void cib_remote_connection_destroy(gpointer user_data); gboolean cib_remote_dispatch(int fd, gpointer user_data); int cib_remote_signon(cib_t* cib, const char *name, enum cib_conn_type type); int cib_remote_signoff(cib_t* cib); int cib_remote_free(cib_t* cib); int cib_remote_perform_op( cib_t *cib, const char *op, const char *host, const char *section, xmlNode *data, xmlNode **output_data, int call_options); static int cib_remote_inputfd(cib_t* cib) { cib_remote_opaque_t *private = cib->variant_opaque; return private->callback.socket; } static int cib_remote_set_connection_dnotify( cib_t *cib, void (*dnotify)(gpointer user_data)) { return cib_NOTSUPPORTED; } static int cib_remote_register_notification(cib_t* cib, const char *callback, int enabled) { xmlNode *notify_msg = create_xml_node(NULL, "cib_command"); cib_remote_opaque_t *private = cib->variant_opaque; crm_xml_add(notify_msg, F_CIB_OPERATION, T_CIB_NOTIFY); crm_xml_add(notify_msg, F_CIB_NOTIFY_TYPE, callback); crm_xml_add_int(notify_msg, F_CIB_NOTIFY_ACTIVATE, enabled); cib_send_remote_msg(private->callback.session, notify_msg, private->callback.encrypted); free_xml(notify_msg); return cib_ok; } cib_t* cib_remote_new (const char *server, const char *user, const char *passwd, int port, gboolean encrypted) { cib_remote_opaque_t *private = NULL; cib_t *cib = cib_new_variant(); crm_malloc0(private, sizeof(cib_remote_opaque_t)); cib->variant = cib_remote; cib->variant_opaque = private; if(server) { private->server = crm_strdup(server); } if(user) { private->user = crm_strdup(user); } if(passwd) { private->passwd = crm_strdup(passwd); } private->port = port; private->command.encrypted = encrypted; private->callback.encrypted = encrypted; /* assign variant specific ops*/ cib->cmds->variant_op = cib_remote_perform_op; cib->cmds->signon = cib_remote_signon; cib->cmds->signoff = cib_remote_signoff; cib->cmds->free = cib_remote_free; cib->cmds->inputfd = cib_remote_inputfd; cib->cmds->register_notification = cib_remote_register_notification; cib->cmds->set_connection_dnotify = cib_remote_set_connection_dnotify; return cib; } static int cib_tls_close(cib_t *cib) { cib_remote_opaque_t *private = cib->variant_opaque; + shutdown (private->command.socket, SHUT_RDWR); /* no more receptions */ + shutdown (private->callback.socket, SHUT_RDWR); /* no more receptions */ close(private->command.socket); close(private->callback.socket); + #ifdef HAVE_GNUTLS_GNUTLS_H if(private->command.encrypted) { + gnutls_bye(*(private->command.session), GNUTLS_SHUT_RDWR); gnutls_deinit(*(private->command.session)); gnutls_free(private->command.session); + gnutls_bye(*(private->callback.session), GNUTLS_SHUT_RDWR); gnutls_deinit(*(private->callback.session)); gnutls_free(private->callback.session); gnutls_anon_free_client_credentials (anon_cred_c); gnutls_global_deinit(); } #endif return 0; } static int cib_tls_signon(cib_t *cib, struct remote_connection_s *connection) { int sock; cib_remote_opaque_t *private = cib->variant_opaque; struct sockaddr_in addr; int rc = 0; char *server = private->server; int ret_ga; struct addrinfo *res; struct addrinfo hints; xmlNode *answer = NULL; xmlNode *login = NULL; connection->socket = 0; connection->session = NULL; /* create socket */ sock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP); if (sock == -1 ) { crm_perror(LOG_ERR,"Socket creation failed"); return -1; } /* getaddrinfo */ bzero(&hints, sizeof(struct addrinfo)); hints.ai_flags = AI_CANONNAME; hints.ai_family = AF_INET; hints.ai_socktype = SOCK_RAW; if(hints.ai_family == AF_INET6) { hints.ai_protocol = IPPROTO_ICMPV6; } else { hints.ai_protocol = IPPROTO_ICMP; } crm_debug("Looking up %s", server); ret_ga = getaddrinfo(server, NULL, &hints, &res); if (ret_ga) { crm_err("getaddrinfo: %s", gai_strerror(ret_ga)); return -1; } if (res->ai_canonname) { server = res->ai_canonname; } crm_debug("Got address %s for %s", server, private->server); if (!res->ai_addr) { fprintf(stderr, "getaddrinfo failed"); exit(1); } #if 1 memcpy(&addr, res->ai_addr, res->ai_addrlen); #else /* connect to server*/ memset(&addr, 0, sizeof(addr)); addr.sin_family = AF_INET; addr.sin_addr.s_addr = inet_addr(server); #endif addr.sin_port = htons(private->port); if (connect(sock, (struct sockaddr *) &addr, sizeof(addr)) == -1) { crm_perror(LOG_ERR,"Connection to %s:%d failed", server, private->port); close(sock); return -1; } if(connection->encrypted) { /* initialize GnuTls lib*/ #ifdef HAVE_GNUTLS_GNUTLS_H gnutls_global_init(); gnutls_anon_allocate_client_credentials(&anon_cred_c); /* bind the socket to GnuTls lib */ connection->session = create_tls_session(sock, GNUTLS_CLIENT); if (connection->session == NULL) { crm_perror(LOG_ERR,"Session creation for %s:%d failed", server, private->port); close(sock); cib_tls_close(cib); return -1; } #else return cib_NOTSUPPORTED; #endif } else { connection->session = GUINT_TO_POINTER(sock); } /* login to server */ login = create_xml_node(NULL, "cib_command"); crm_xml_add(login, "op", "authenticate"); crm_xml_add(login, "user", private->user); crm_xml_add(login, "password", private->passwd); crm_xml_add(login, "hidden", "password"); cib_send_remote_msg(connection->session, login, connection->encrypted); free_xml(login); answer = cib_recv_remote_msg(connection->session, connection->encrypted); crm_log_xml_debug_3(answer, "Reply"); if(answer == NULL) { rc = cib_authentication; } else { /* grab the token */ const char *msg_type = crm_element_value(answer, F_CIB_OPERATION); const char *tmp_ticket = crm_element_value(answer, F_CIB_CLIENTID); if(safe_str_neq(msg_type, CRM_OP_REGISTER) ) { crm_err("Invalid registration message: %s", msg_type); rc = cib_registration_msg; } else if(tmp_ticket == NULL) { rc = cib_callback_token; } else { connection->token = crm_strdup(tmp_ticket); } } if (rc != 0) { cib_tls_close(cib); } connection->socket = sock; connection->source = G_main_add_fd( G_PRIORITY_HIGH, connection->socket, FALSE, cib_remote_dispatch, cib, cib_remote_connection_destroy); return rc; } void cib_remote_connection_destroy(gpointer user_data) { crm_err("Connection destroyed"); #ifdef HAVE_GNUTLS_GNUTLS_H cib_tls_close(user_data); #endif return; } gboolean cib_remote_dispatch(int fd, gpointer user_data) { cib_t *cib = user_data; cib_remote_opaque_t *private = cib->variant_opaque; if(fd == private->callback.socket) { xmlNode *msg = NULL; const char *type = NULL; crm_info("Message on callback channel"); msg = cib_recv_remote_msg(private->callback.session, private->callback.encrypted); type = crm_element_value(msg, F_TYPE); crm_debug_4("Activating %s callbacks...", type); if(safe_str_eq(type, T_CIB)) { cib_native_callback(cib, msg, 0, 0); } else if(safe_str_eq(type, T_CIB_NOTIFY)) { g_list_foreach(cib->notify_list, cib_native_notify, msg); } else { crm_err("Unknown message type: %s", type); } if(msg != NULL) { free_xml(msg); return TRUE; } } else if(fd == private->command.socket) { crm_err("Message on command channel"); } else { crm_err("Unknown fd"); } return FALSE; } int cib_remote_signon(cib_t* cib, const char *name, enum cib_conn_type type) { int rc = cib_ok; cib_remote_opaque_t *private = cib->variant_opaque; if(private->passwd == NULL) { struct termios settings; int rc; rc = tcgetattr (0, &settings); settings.c_lflag &= ~ECHO; rc = tcsetattr (0, TCSANOW, &settings); fprintf(stderr, "Password: "); crm_malloc0(private->passwd, 1024); scanf("%s", private->passwd); fprintf(stdout, "\n"); /* fprintf(stderr, "entered: '%s'\n", buffer); */ settings.c_lflag |= ECHO; rc = tcsetattr (0, TCSANOW, &settings); } if(private->server == NULL || private->user == NULL) { rc = cib_missing; } if(rc == cib_ok) { rc = cib_tls_signon(cib, &(private->command)); } if(rc == cib_ok) { rc = cib_tls_signon(cib, &(private->callback)); } if(rc == cib_ok) { xmlNode *hello = cib_create_op(0, private->callback.token, CRM_OP_REGISTER, NULL, NULL, NULL, 0, NULL); crm_xml_add(hello, F_CIB_CLIENTNAME, name); cib_send_remote_msg(private->command.session, hello, private->command.encrypted); free_xml(hello); } if(rc == cib_ok) { fprintf(stderr, "%s: Opened connection to %s:%d\n", name, private->server, private->port); cib->state = cib_connected_command; cib->type = cib_command; } else { fprintf(stderr, "%s: Connection to %s:%d failed: %s\n", name, private->server, private->port, cib_error2string(rc)); } return rc; } int cib_remote_signoff(cib_t* cib) { int rc = cib_ok; /* cib_remote_opaque_t *private = cib->variant_opaque; */ crm_debug("Signing out of the CIB Service"); #ifdef HAVE_GNUTLS_GNUTLS_H cib_tls_close(cib); #endif cib->state = cib_disconnected; cib->type = cib_none; return rc; } int cib_remote_free (cib_t* cib) { int rc = cib_ok; crm_warn("Freeing CIB"); if(cib->state != cib_disconnected) { rc = cib_remote_signoff(cib); if(rc == cib_ok) { cib_remote_opaque_t *private = cib->variant_opaque; crm_free(private->server); crm_free(private->user); crm_free(private->passwd); crm_free(cib->cmds); crm_free(private); crm_free(cib); } } return rc; } static gboolean timer_expired = FALSE; static struct timer_rec_s *sync_timer = NULL; static gboolean cib_timeout_handler(gpointer data) { struct timer_rec_s *timer = data; timer_expired = TRUE; crm_err("Call %d timed out after %ds", timer->call_id, timer->timeout); /* Always return TRUE, never remove the handler * We do that after the while-loop in cib_native_perform_op() */ return TRUE; } int cib_remote_perform_op( cib_t *cib, const char *op, const char *host, const char *section, xmlNode *data, xmlNode **output_data, int call_options) { int rc = HA_OK; xmlNode *op_msg = NULL; xmlNode *op_reply = NULL; cib_remote_opaque_t *private = cib->variant_opaque; if(sync_timer == NULL) { crm_malloc0(sync_timer, sizeof(struct timer_rec_s)); } if(cib->state == cib_disconnected) { return cib_not_connected; } if(output_data != NULL) { *output_data = NULL; } if(op == NULL) { crm_err("No operation specified"); return cib_operation; } cib->call_id++; /* prevent call_id from being negative (or zero) and conflicting * with the cib_errors enum * use 2 because we use it as (cib->call_id - 1) below */ if(cib->call_id < 1) { cib->call_id = 1; } op_msg = cib_create_op( cib->call_id, private->callback.token, op, host, section, data, call_options, NULL); if(op_msg == NULL) { return cib_create_msg; } crm_debug_3("Sending %s message to CIB service", op); cib_send_remote_msg(private->command.session, op_msg, private->command.encrypted); free_xml(op_msg); if((call_options & cib_discard_reply)) { crm_debug_3("Discarding reply"); return cib_ok; } else if(!(call_options & cib_sync_call)) { return cib->call_id; } rc = IPC_OK; crm_debug_3("Waiting for a syncronous reply"); if(cib->call_timeout > 0) { /* We need this, even with msgfromIPC_timeout(), because we might * get other/older replies that don't match the active request */ timer_expired = FALSE; sync_timer->call_id = cib->call_id; sync_timer->timeout = cib->call_timeout*1000; sync_timer->ref = g_timeout_add( sync_timer->timeout, cib_timeout_handler, sync_timer); } while(timer_expired == FALSE) { int reply_id = -1; int msg_id = cib->call_id; op_reply = cib_recv_remote_msg(private->command.session, private->command.encrypted); if(op_reply == NULL) { break; } crm_element_value_int(op_reply, F_CIB_CALLID, &reply_id); CRM_CHECK(reply_id > 0, free_xml(op_reply); if(sync_timer->ref > 0) { g_source_remove(sync_timer->ref); sync_timer->ref = 0; } return cib_reply_failed); if(reply_id == msg_id) { break; } else if(reply_id < msg_id) { crm_debug("Received old reply: %d (wanted %d)", reply_id, msg_id); crm_log_xml( LOG_MSG, "Old reply", op_reply); } else if((reply_id - 10000) > msg_id) { /* wrap-around case */ crm_debug("Received old reply: %d (wanted %d)", reply_id, msg_id); crm_log_xml( LOG_MSG, "Old reply", op_reply); } else { crm_err("Received a __future__ reply:" " %d (wanted %d)", reply_id, msg_id); } free_xml(op_reply); op_reply = NULL; } if(sync_timer->ref > 0) { g_source_remove(sync_timer->ref); sync_timer->ref = 0; } if(timer_expired) { return cib_remote_timeout; } /* if(IPC_ISRCONN(native->command_channel) == FALSE) { */ /* crm_err("CIB disconnected: %d", */ /* native->command_channel->ch_status); */ /* cib->state = cib_disconnected; */ /* } */ if(op_reply == NULL) { crm_err("No reply message - empty - %d", rc); return cib_reply_failed; } crm_debug_3("Syncronous reply received"); rc = cib_ok; /* Start processing the reply... */ if(crm_element_value_int(op_reply, F_CIB_RC, &rc) != 0) { rc = cib_return_code; } if(rc == cib_diff_resync) { /* This is an internal value that clients do not and should not care about */ rc = cib_ok; } if(rc == cib_ok || rc == cib_not_master || rc == cib_master_timeout) { crm_log_xml(LOG_DEBUG, "passed", op_reply); } else { /* } else if(rc == cib_remote_timeout) { */ crm_err("Call failed: %s", cib_error2string(rc)); crm_log_xml(LOG_WARNING, "failed", op_reply); } if(output_data == NULL) { /* do nothing more */ } else if(!(call_options & cib_discard_reply)) { xmlNode *tmp = get_message_xml(op_reply, F_CIB_CALLDATA); if(tmp == NULL) { crm_debug_3("No output in reply to \"%s\" command %d", op, cib->call_id - 1); } else { *output_data = copy_xml(tmp); } } free_xml(op_reply); return rc; }