| /** |
| * \file session.c |
| * \author Radek Krejci <rkrejci@cesnet.cz> |
| * \brief libnetconf2 - input/output functions |
| * |
| * Copyright (c) 2015 CESNET, z.s.p.o. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * 3. Neither the name of the Company nor the names of its contributors |
| * may be used to endorse or promote products derived from this |
| * software without specific prior written permission. |
| * |
| */ |
| |
| #include <assert.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <netdb.h> |
| #include <pthread.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/socket.h> |
| #include <sys/stat.h> |
| #include <sys/types.h> |
| #include <unistd.h> |
| |
| #include <libyang/libyang.h> |
| |
| #include "libnetconf.h" |
| #include "messages_p.h" |
| |
| #define TIMEOUT_STEP 50 |
| |
| static NC_MSG_TYPE nc_send_hello_(struct nc_session *session); |
| static NC_MSG_TYPE nc_recv_hello(struct nc_session *session); |
| static NC_MSG_TYPE nc_send_msg(struct nc_session *session, struct lyd_node *op); |
| |
| static char *schema_searchpath = NULL; |
| |
| /* session configuration */ |
| static struct { |
| uint16_t hello_timeout; /**< hello-timeout in seconds, default is 600 */ |
| } cfg = {600}; |
| |
| API int |
| nc_schema_searchpath(const char *path) |
| { |
| if (schema_searchpath) { |
| free(schema_searchpath); |
| } |
| schema_searchpath = strdup(path); |
| |
| return schema_searchpath ? 0 : 1; |
| } |
| |
| API NC_STATUS |
| nc_get_session_status(const struct nc_session *session) |
| { |
| return session->status; |
| } |
| |
| API uint32_t |
| nc_get_session_id(const struct nc_session *session) |
| { |
| return session->id; |
| } |
| |
| API NC_TRANSPORT_IMPL |
| nc_get_session_ti(const struct nc_session *session) |
| { |
| return session->ti_type; |
| } |
| |
| API const char * |
| nc_get_session_username(const struct nc_session *session) |
| { |
| return session->username; |
| } |
| |
| API const char * |
| nc_get_session_host(const struct nc_session *session) |
| { |
| return session->host; |
| } |
| |
| API uint16_t |
| nc_get_session_port(const struct nc_session *session) |
| { |
| return session->port; |
| } |
| |
| API const char ** |
| nc_get_session_cpblts(const struct nc_session *session) |
| { |
| return session->cpblts; |
| } |
| |
| /* |
| * @return 0 - success |
| * -1 - timeout |
| * >0 - error |
| */ |
| static int |
| session_ti_lock(struct nc_session *session, int timeout) |
| { |
| int r; |
| |
| if (timeout >= 0) { |
| /* limited waiting for lock */ |
| do { |
| r = pthread_mutex_trylock(session->ti_lock); |
| if (r == EBUSY) { |
| /* try later until timeout passes */ |
| usleep(TIMEOUT_STEP); |
| timeout = timeout - TIMEOUT_STEP; |
| continue; |
| } else if (r) { |
| /* error */ |
| ERR("Acquiring session (%u) TI lock failed (%s).", session->id, strerror(r)); |
| return r; |
| } else { |
| /* lock acquired */ |
| return 0; |
| } |
| } while(timeout > 0); |
| |
| /* timeout has passed */ |
| return -1; |
| } else { |
| /* infinite waiting for lock */ |
| return pthread_mutex_lock(session->ti_lock); |
| } |
| } |
| |
| static int |
| session_ti_unlock(struct nc_session *session) |
| { |
| return pthread_mutex_unlock(session->ti_lock); |
| } |
| |
| int |
| nc_handshake(struct nc_session *session) |
| { |
| NC_MSG_TYPE type; |
| |
| type = nc_send_hello_(session); |
| if (type != NC_MSG_HELLO) { |
| return 1; |
| } |
| |
| type = nc_recv_hello(session); |
| if (type != NC_MSG_HELLO) { |
| return 1; |
| } |
| |
| return 0; |
| } |
| |
| static int |
| ctx_load_model(struct nc_session *session, const char *cpblt) |
| { |
| const struct lys_module *module; |
| char *ptr, *ptr2; |
| char *model_name, *revision = NULL, *features = NULL; |
| |
| /* parse module */ |
| ptr = strstr(cpblt, "module="); |
| if (!ptr) { |
| WRN("Unknown capability \"%s\" could not be parsed.", cpblt); |
| return 1; |
| } |
| ptr += 7; |
| ptr2 = strchr(ptr, '&'); |
| if (!ptr2) { |
| ptr2 = ptr + strlen(ptr); |
| } |
| model_name = strndup(ptr, ptr2 - ptr); |
| |
| /* parse revision */ |
| ptr = strstr(cpblt, "revision="); |
| if (ptr) { |
| ptr += 9; |
| ptr2 = strchr(ptr, '&'); |
| if (!ptr2) { |
| ptr2 = ptr + strlen(ptr); |
| } |
| revision = strndup(ptr, ptr2 - ptr); |
| } |
| |
| /* load module if needed */ |
| module = ly_ctx_get_module(session->ctx, model_name, revision); |
| if (!module) { |
| module = ly_ctx_load_module(session->ctx, model_name, revision); |
| } |
| |
| free(model_name); |
| free(revision); |
| if (!module) { |
| return 1; |
| } |
| |
| /* parse features */ |
| ptr = strstr(cpblt, "features="); |
| if (ptr) { |
| ptr += 9; |
| ptr2 = strchr(ptr, '&'); |
| if (!ptr2) { |
| ptr2 = ptr + strlen(ptr); |
| } |
| features = strndup(ptr, ptr2 - ptr); |
| } |
| |
| /* enable features */ |
| if (features) { |
| /* basically manual strtok_r (to avoid macro) */ |
| ptr2 = features; |
| for (ptr = features; *ptr; ++ptr) { |
| if (*ptr == ',') { |
| *ptr = '\0'; |
| /* remember last feature */ |
| ptr2 = ptr + 1; |
| } |
| } |
| |
| ptr = features; |
| lys_features_enable(module, ptr); |
| while (ptr != ptr2) { |
| ptr += strlen(ptr) + 1; |
| lys_features_enable(module, ptr); |
| } |
| |
| free(features); |
| } |
| |
| return 0; |
| } |
| |
| static int |
| ctx_load_ietf_netconf(struct ly_ctx *ctx, const char **cpblts) |
| { |
| int i; |
| const struct lys_module *ietfnc; |
| |
| if (!(ietfnc = ly_ctx_load_module(ctx, "ietf-netconf", NULL))) { |
| ERR("Loading base NETCONF schema failed."); |
| return 1; |
| } |
| |
| /* set supported capabilities from ietf-netconf */ |
| for (i = 0; cpblts[i]; ++i) { |
| if (!strncmp(cpblts[i], "urn:ietf:params:netconf:capability:", 35)) { |
| if (!strncmp(cpblts[i] + 35, "writable-running", 16)) { |
| lys_features_enable(ietfnc, "writable-running"); |
| } else if (!strncmp(cpblts[i] + 35, "candidate", 9)) { |
| lys_features_enable(ietfnc, "candidate"); |
| } else if (!strcmp(cpblts[i] + 35, "confirmed-commit:1.1")) { |
| lys_features_enable(ietfnc, "confirmed-commit"); |
| } else if (!strncmp(cpblts[i] + 35, "rollback-on-error", 17)) { |
| lys_features_enable(ietfnc, "rollback-on-error"); |
| } else if (!strcmp(cpblts[i] + 35, "validate:1.1")) { |
| lys_features_enable(ietfnc, "validate"); |
| } else if (!strncmp(cpblts[i] + 35, "startup", 7)) { |
| lys_features_enable(ietfnc, "startup"); |
| } else if (!strncmp(cpblts[i] + 35, "url", 3)) { |
| lys_features_enable(ietfnc, "url"); |
| } else if (!strncmp(cpblts[i] + 35, "xpath", 5)) { |
| lys_features_enable(ietfnc, "xpath"); |
| } |
| } |
| } |
| |
| return 0; |
| } |
| |
| static char * |
| libyang_module_clb(const char *name, const char *revision, void *user_data, LYS_INFORMAT *format, |
| void (**free_model_data)(char *model_data)) |
| { |
| struct nc_session *session = (struct nc_session *)user_data; |
| struct nc_rpc *rpc; |
| struct nc_reply *reply; |
| struct nc_reply_data *data_rpl; |
| NC_MSG_TYPE msg; |
| char *model_data; |
| uint64_t msgid; |
| |
| /* TODO later replace with yang to reduce model size? */ |
| rpc = nc_rpc_getschema(name, revision, "yin", NC_RPC_PARAMTYPE_CONST); |
| *format = LYS_IN_YIN; |
| |
| while ((msg = nc_send_rpc(session, rpc, 0, &msgid)) == NC_MSG_WOULDBLOCK) { |
| usleep(1000); |
| } |
| if (msg == NC_MSG_ERROR) { |
| ERR("Failed to send the <get-schema> RPC."); |
| nc_rpc_free(rpc); |
| return NULL; |
| } |
| |
| msg = nc_recv_reply(session, rpc, msgid, 250, &reply); |
| nc_rpc_free(rpc); |
| if (msg == NC_MSG_WOULDBLOCK) { |
| ERR("Timeout for receiving reply to a <get-schema> expired."); |
| return NULL; |
| } else if (msg == NC_MSG_ERROR) { |
| ERR("Failed to receive a reply to <get-schema>."); |
| return NULL; |
| } |
| |
| data_rpl = (struct nc_reply_data *)reply; |
| model_data = lyxml_serialize(((struct lyd_node_anyxml *)data_rpl->data)->value); |
| nc_reply_free(reply); |
| *free_model_data = NULL; |
| |
| return model_data; |
| } |
| |
| /* session with an empty context is assumed */ |
| int |
| nc_ctx_fill(struct nc_session *session) |
| { |
| int i; |
| ly_module_clb old_clb = NULL; |
| void *old_data = NULL; |
| |
| assert(session->cpblts && session->ctx); |
| |
| /* check if get-schema is supported */ |
| for (i = 0; session->cpblts[i]; ++i) { |
| if (!strncmp(session->cpblts[i], "urn:ietf:params:xml:ns:yang:ietf-netconf-monitoring", 51)) { |
| /* it is supported, load local ietf-netconf-monitoring so we can create <get-schema> RPCs */ |
| if (ly_ctx_load_module(session->ctx, "ietf-netconf-monitoring", NULL)) { |
| /* set module retrieval using <get-schema> */ |
| old_clb = ly_ctx_get_module_clb(session->ctx, &old_data); |
| ly_ctx_set_module_clb(session->ctx, &libyang_module_clb, session); |
| } else { |
| WRN("Loading NETCONF monitoring schema failed, cannot use <get-schema>."); |
| } |
| break; |
| } |
| } |
| |
| /* load base model disregarding whether it's in capabilities (but NETCONF capabilities are used to enable features) */ |
| if (ctx_load_ietf_netconf(session->ctx, session->cpblts)) { |
| ly_ctx_set_module_clb(session->ctx, old_clb, old_data); |
| return 1; |
| } |
| |
| /* load all other models */ |
| for (i = 0; session->cpblts[i]; ++i) { |
| if (!strncmp(session->cpblts[i], "urn:ietf:params:netconf:capability", 34) |
| || !strncmp(session->cpblts[i], "urn:ietf:params:netconf:base", 28)) { |
| continue; |
| } |
| |
| ctx_load_model(session, session->cpblts[i]); |
| } |
| |
| ly_ctx_set_module_clb(session->ctx, old_clb, old_data); |
| return 0; |
| } |
| |
| int |
| nc_ctx_check(struct nc_session *session) |
| { |
| /* check presence of the required base schema */ |
| if (!ly_ctx_get_module(session->ctx, "ietf-netconf", NULL)) { |
| if (ctx_load_ietf_netconf(session->ctx, session->cpblts)) { |
| return 1; |
| } |
| } |
| |
| return 0; |
| } |
| |
| API struct nc_session * |
| nc_connect_inout(int fdin, int fdout, struct ly_ctx *ctx) |
| { |
| struct nc_session *session = NULL; |
| |
| if (fdin < 0 || fdout < 0) { |
| ERR("%s: Invalid parameter", __func__); |
| return NULL; |
| } |
| |
| /* prepare session structure */ |
| session = calloc(1, sizeof *session); |
| if (!session) { |
| ERRMEM; |
| return NULL; |
| } |
| session->status = NC_STATUS_STARTING; |
| session->side = NC_CLIENT; |
| |
| /* transport specific data */ |
| session->ti_type = NC_TI_FD; |
| session->ti.fd.in = fdin; |
| session->ti.fd.out = fdout; |
| |
| /* assign context (dicionary needed for handshake) */ |
| if (!ctx) { |
| ctx = ly_ctx_new(SCHEMAS_DIR); |
| } else { |
| session->flags |= NC_SESSION_SHAREDCTX; |
| } |
| session->ctx = ctx; |
| |
| /* NETCONF handshake */ |
| if (nc_handshake(session)) { |
| goto fail; |
| } |
| session->status = NC_STATUS_RUNNING; |
| |
| /* check/fill libyang context */ |
| if (session->flags & NC_SESSION_SHAREDCTX) { |
| if (nc_ctx_check(session)) { |
| goto fail; |
| } |
| } else { |
| if (nc_ctx_fill(session)) { |
| goto fail; |
| } |
| } |
| |
| return session; |
| |
| fail: |
| nc_session_free(session); |
| return NULL; |
| } |
| |
| int |
| nc_connect_getsocket(const char* host, unsigned short port) |
| { |
| int sock = -1; |
| int i; |
| struct addrinfo hints, *res_list, *res; |
| char port_s[6]; /* length of string representation of short int */ |
| |
| snprintf(port_s, 6, "%u", port); |
| |
| /* Connect to a server */ |
| memset(&hints, 0, sizeof hints); |
| hints.ai_family = AF_UNSPEC; |
| hints.ai_socktype = SOCK_STREAM; |
| hints.ai_protocol = IPPROTO_TCP; |
| i = getaddrinfo(host, port_s, &hints, &res_list); |
| if (i != 0) { |
| ERR("Unable to translate the host address (%s).", gai_strerror(i)); |
| return -1; |
| } |
| |
| for (i = 0, res = res_list; res != NULL; res = res->ai_next) { |
| sock = socket(res->ai_family, res->ai_socktype, res->ai_protocol); |
| if (sock == -1) { |
| /* socket was not created, try another resource */ |
| i = errno; |
| goto errloop; |
| } |
| |
| if (connect(sock, res->ai_addr, res->ai_addrlen) == -1) { |
| /* network connection failed, try another resource */ |
| i = errno; |
| close(sock); |
| sock = -1; |
| goto errloop; |
| } |
| |
| /* we're done, network connection established */ |
| break; |
| errloop: |
| VRB("Unable to connect to %s:%s over %s (%s).", host, port_s, |
| (res->ai_family == AF_INET6) ? "IPv6" : "IPv4", strerror(i)); |
| continue; |
| } |
| |
| if (sock == -1) { |
| ERR("Unable to connect to %s:%s.", host, port_s); |
| } else { |
| VRB("Successfully connected to %s:%s over %s", host, port_s, (res->ai_family == AF_INET6) ? "IPv6" : "IPv4"); |
| } |
| freeaddrinfo(res_list); |
| |
| return sock; |
| } |
| |
| API void |
| nc_session_free(struct nc_session *session) |
| { |
| int r, i; |
| int multisession = 0; /* flag for more NETCONF session on a single SSH session */ |
| struct nc_session *siter; |
| struct nc_msg_cont *contiter; |
| struct lyxml_elem *rpl, *child; |
| struct lyd_node *close_rpc; |
| const struct lys_module *ietfnc; |
| void *p; |
| |
| if (!session || session->status == NC_STATUS_CLOSING) { |
| return; |
| } |
| |
| /* mark session for closing */ |
| if (session->ti_lock) { |
| do { |
| r = session_ti_lock(session, 0); |
| } while (r < 0); |
| if (r) { |
| return; |
| } |
| } |
| |
| /* stop notifications loop if any */ |
| if (session->notif) { |
| pthread_cancel(*session->notif); |
| pthread_join(*session->notif, NULL); |
| } |
| |
| if (session->side == NC_CLIENT && session->status == NC_STATUS_RUNNING) { |
| /* cleanup message queues */ |
| /* notifications */ |
| for (contiter = session->notifs; contiter; ) { |
| lyxml_free(session->ctx, contiter->msg); |
| |
| p = contiter; |
| contiter = contiter->next; |
| free(p); |
| } |
| |
| /* rpc replies */ |
| for (contiter = session->replies; contiter; ) { |
| lyxml_free(session->ctx, contiter->msg); |
| |
| p = contiter; |
| contiter = contiter->next; |
| free(p); |
| } |
| |
| /* send closing info to the other side */ |
| ietfnc = ly_ctx_get_module(session->ctx, "ietf-netconf", NULL); |
| if (!ietfnc) { |
| WRN("%s: Missing ietf-netconf schema in context (session %u), unable to send <close-session\\>", __func__, session->id); |
| } else { |
| close_rpc = lyd_new(NULL, ietfnc, "close-session"); |
| nc_send_msg(session, close_rpc); |
| lyd_free(close_rpc); |
| switch (nc_read_msg(session, 200, &rpl)) { |
| case NC_MSG_REPLY: |
| LY_TREE_FOR(rpl->child, child) { |
| if (!strcmp(child->name, "ok") && child->ns && !strcmp(child->ns->value, NC_NS_BASE)) { |
| break; |
| } |
| } |
| if (!child) { |
| WRN("The reply to <close-session\\> was not <ok\\> as expected."); |
| } |
| lyxml_free(session->ctx, rpl); |
| break; |
| case NC_MSG_WOULDBLOCK: |
| WRN("Timeout for receiving a reply to <close-session\\> elapsed."); |
| break; |
| case NC_MSG_ERROR: |
| ERR("Failed to receive a reply to <close-session\\>."); |
| break; |
| default: |
| /* cannot happen */ |
| break; |
| } |
| } |
| |
| /* list of server's capabilities */ |
| if (session->cpblts) { |
| for (i = 0; session->cpblts[i]; i++) { |
| lydict_remove(session->ctx, session->cpblts[i]); |
| } |
| free(session->cpblts); |
| } |
| } |
| |
| session->status = NC_STATUS_CLOSING; |
| |
| /* transport implementation cleanup */ |
| switch (session->ti_type) { |
| case NC_TI_NONE: |
| break; |
| |
| case NC_TI_FD: |
| /* nothing needed - file descriptors were provided by caller, |
| * so it is up to the caller to close them correctly |
| * TODO use callbacks |
| */ |
| break; |
| |
| #ifdef ENABLE_SSH |
| case NC_TI_LIBSSH: |
| ssh_channel_free(session->ti.libssh.channel); |
| /* There can be multiple NETCONF sessions on the same SSH session (NETCONF session maps to |
| * SSH channel). So destroy the SSH session only if there is no other NETCONF session using |
| * it. |
| */ |
| if (!session->ti.libssh.next) { |
| ssh_disconnect(session->ti.libssh.session); |
| ssh_free(session->ti.libssh.session); |
| } else { |
| /* multiple NETCONF sessions on a single SSH session */ |
| multisession = 1; |
| /* remove the session from the list */ |
| for (siter = session->ti.libssh.next; siter->ti.libssh.next != session; siter = siter->ti.libssh.next); |
| if (session->ti.libssh.next == siter) { |
| /* there will be only one session */ |
| siter->ti.libssh.next = NULL; |
| } else { |
| /* there are still multiple sessions, keep the ring list */ |
| siter->ti.libssh.next = session->ti.libssh.next; |
| } |
| } |
| break; |
| #endif |
| |
| #ifdef ENABLE_TLS |
| case NC_TI_OPENSSL: |
| SSL_shutdown(session->ti.tls); |
| SSL_free(session->ti.tls); |
| break; |
| #endif |
| } |
| lydict_remove(session->ctx, session->username); |
| lydict_remove(session->ctx, session->host); |
| |
| /* final cleanup */ |
| if (session->ti_lock) { |
| if (multisession) { |
| session_ti_unlock(session); |
| } else { |
| pthread_mutex_destroy(session->ti_lock); |
| free(session->ti_lock); |
| } |
| } |
| |
| if (!(session->flags & NC_SESSION_SHAREDCTX)) { |
| ly_ctx_destroy(session->ctx); |
| } |
| |
| free(session); |
| } |
| |
| static int |
| parse_cpblts(struct lyxml_elem *xml, const char ***list) |
| { |
| struct lyxml_elem *cpblt; |
| int ver = -1; |
| int i = 0; |
| |
| if (list) { |
| /* get the storage for server's capabilities */ |
| LY_TREE_FOR(xml->child, cpblt) { |
| i++; |
| } |
| /* last item remains NULL */ |
| *list = calloc(i + 1, sizeof **list); |
| if (!*list) { |
| ERRMEM; |
| return -1; |
| } |
| i = 0; |
| } |
| |
| LY_TREE_FOR(xml->child, cpblt) { |
| if (strcmp(cpblt->name, "capability") && cpblt->ns && cpblt->ns->value && |
| !strcmp(cpblt->ns->value, NC_NS_BASE)) { |
| ERR("Unexpected <%s> element in client's <hello>.", cpblt->name); |
| return -1; |
| } else if (!cpblt->ns || !cpblt->ns->value || strcmp(cpblt->ns->value, NC_NS_BASE)) { |
| continue; |
| } |
| |
| /* detect NETCONF version */ |
| if (ver < 0 && !strcmp(cpblt->content, "urn:ietf:params:netconf:base:1.0")) { |
| ver = 0; |
| } else if (ver < 1 && !strcmp(cpblt->content, "urn:ietf:params:netconf:base:1.1")) { |
| ver = 1; |
| } |
| |
| /* store capabilities */ |
| if (list) { |
| (*list)[i] = cpblt->content; |
| cpblt->content = NULL; |
| i++; |
| } |
| } |
| |
| if (ver == -1) { |
| ERR("Peer does not support compatible NETCONF version."); |
| } |
| |
| return ver; |
| } |
| |
| static NC_MSG_TYPE |
| nc_recv_hello(struct nc_session *session) |
| { |
| struct lyxml_elem *xml = NULL, *node; |
| NC_MSG_TYPE msgtype = 0; /* NC_MSG_ERROR */ |
| int ver = -1; |
| char *str; |
| long long int id; |
| int flag = 0; |
| |
| msgtype = nc_read_msg(session, cfg.hello_timeout * 1000, &xml); |
| |
| switch(msgtype) { |
| case NC_MSG_HELLO: |
| /* parse <hello> data */ |
| if (session->side == NC_SERVER) { |
| /* get know NETCONF version */ |
| LY_TREE_FOR(xml->child, node) { |
| if (!node->ns || !node->ns->value || strcmp(node->ns->value, NC_NS_BASE)) { |
| continue; |
| } else if (strcmp(node->name, "capabilities")) { |
| ERR("Unexpected <%s> element in client's <hello>.", node->name); |
| goto error; |
| } |
| |
| if (flag) { |
| /* multiple capabilities elements */ |
| ERR("Invalid <hello> message (multiple <capabilities> elements)"); |
| goto error; |
| } |
| flag = 1; |
| |
| if ((ver = parse_cpblts(node, &session->cpblts)) < 0) { |
| goto error; |
| } |
| session->version = ver; |
| } |
| } else { /* NC_CLIENT */ |
| LY_TREE_FOR(xml->child, node) { |
| if (!node->ns || !node->ns->value || strcmp(node->ns->value, NC_NS_BASE)) { |
| continue; |
| } else if (!strcmp(node->name, "session-id")) { |
| if (!node->content || !strlen(node->content)) { |
| ERR("No value of <session-id> element in server's <hello>"); |
| goto error; |
| } |
| str = NULL; |
| id = strtoll(node->content, &str, 10); |
| if (*str || id < 1 || id > UINT32_MAX) { |
| ERR("Invalid value of <session-id> element in server's <hello>"); |
| goto error; |
| } |
| session->id = (uint32_t)id; |
| continue; |
| } else if (strcmp(node->name, "capabilities")) { |
| ERR("Unexpected <%s> element in client's <hello>.", node->name); |
| goto error; |
| } |
| |
| if (flag) { |
| /* multiple capabilities elements */ |
| ERR("Invalid <hello> message (multiple <capabilities> elements)"); |
| goto error; |
| } |
| flag = 1; |
| |
| if ((ver = parse_cpblts(node, &session->cpblts)) < 0) { |
| goto error; |
| } |
| session->version = ver; |
| } |
| |
| if (!session->id) { |
| ERR("Missing <session-id> in server's <hello>"); |
| goto error; |
| } |
| } |
| break; |
| case NC_MSG_ERROR: |
| /* nothing special, just pass it out */ |
| break; |
| default: |
| ERR("Unexpected message received instead of <hello>."); |
| msgtype = NC_MSG_ERROR; |
| } |
| |
| /* cleanup */ |
| lyxml_free(session->ctx, xml); |
| |
| return msgtype; |
| |
| error: |
| /* cleanup */ |
| lyxml_free(session->ctx, xml); |
| |
| return NC_MSG_ERROR; |
| } |
| |
| NC_MSG_TYPE |
| nc_recv_rpc(struct nc_session *session, int timeout, struct nc_server_rpc **rpc) |
| { |
| int r; |
| struct lyxml_elem *xml = NULL; |
| NC_MSG_TYPE msgtype = 0; /* NC_MSG_ERROR */ |
| |
| if (!session || !rpc) { |
| ERR("%s: Invalid parameter", __func__); |
| return NC_MSG_ERROR; |
| } else if (session->status != NC_STATUS_RUNNING || session->side != NC_SERVER) { |
| ERR("%s: invalid session to receive RPCs.", __func__); |
| return NC_MSG_ERROR; |
| } |
| |
| r = session_ti_lock(session, timeout); |
| if (r > 0) { |
| /* error */ |
| return NC_MSG_ERROR; |
| } else if (r < 0) { |
| /* timeout */ |
| return NC_MSG_WOULDBLOCK; |
| } |
| |
| msgtype = nc_read_msg(session, timeout, &xml); |
| session_ti_unlock(session); |
| |
| switch(msgtype) { |
| case NC_MSG_RPC: |
| *rpc = malloc(sizeof **rpc); |
| (*rpc)->tree = lyd_parse_xml(session->ctx, xml, LYD_OPT_DESTRUCT); |
| lyxml_free(session->ctx, xml); |
| break; |
| case NC_MSG_HELLO: |
| ERR("SESSION %u: Received another <hello> message.", session->id); |
| goto error; |
| case NC_MSG_REPLY: |
| ERR("SESSION %u: Received <rpc-reply> from NETCONF client.", session->id); |
| goto error; |
| case NC_MSG_NOTIF: |
| ERR("SESSION %u: Received <notification> from NETCONF client.", session->id); |
| goto error; |
| default: |
| /* NC_MSG_WOULDBLOCK and NC_MSG_ERROR - pass it out; |
| * NC_MSG_NONE is not returned by nc_read_msg() |
| */ |
| break; |
| } |
| |
| return msgtype; |
| |
| error: |
| |
| /* cleanup */ |
| lyxml_free(session->ctx, xml); |
| |
| return NC_MSG_ERROR; |
| } |
| |
| static NC_MSG_TYPE |
| get_msg(struct nc_session *session, int timeout, uint64_t msgid, struct lyxml_elem **msg) |
| { |
| int r; |
| char *ptr; |
| const char *str_msgid; |
| uint64_t cur_msgid; |
| struct lyxml_elem *xml; |
| struct nc_msg_cont *cont, *prev_cont, **cont_ptr; |
| NC_MSG_TYPE msgtype = 0; /* NC_MSG_ERROR */ |
| |
| next_message: |
| if (msgtype) { |
| /* second run, wait and give a chance to nc_recv_reply() */ |
| usleep(TIMEOUT_STEP); |
| timeout = timeout - (TIMEOUT_STEP); |
| } |
| r = session_ti_lock(session, timeout); |
| if (r > 0) { |
| /* error */ |
| return NC_MSG_ERROR; |
| } else if (r < 0) { |
| /* timeout */ |
| return NC_MSG_WOULDBLOCK; |
| } |
| |
| /* try to get notification from the session's queue */ |
| if (!msgid && session->notifs) { |
| cont = session->notifs; |
| session->notifs = cont->next; |
| |
| session_ti_unlock(session); |
| |
| *msg = cont->msg; |
| free(cont); |
| |
| return NC_MSG_NOTIF; |
| } |
| |
| /* try to get rpc-reply from the session's queue */ |
| if (msgid && session->replies) { |
| prev_cont = NULL; |
| for (cont = session->replies; cont; cont = cont->next) { |
| /* errors checked in the condition below */ |
| str_msgid = lyxml_get_attr(cont->msg, "message-id", NULL); |
| cur_msgid = strtoul(str_msgid, &ptr, 10); |
| |
| if (cur_msgid == msgid) { |
| if (!prev_cont) { |
| session->replies = cont->next; |
| } else { |
| prev_cont->next = cont->next; |
| } |
| session_ti_unlock(session); |
| |
| *msg = cont->msg; |
| free(cont); |
| |
| return NC_MSG_REPLY; |
| } |
| |
| prev_cont = cont; |
| } |
| } |
| |
| /* read message from wire */ |
| msgtype = nc_read_msg(session, timeout, &xml); |
| |
| /* we read rpc-reply, want a notif */ |
| if (!msgid && (msgtype == NC_MSG_REPLY)) { |
| /* just check that message-id is fine */ |
| str_msgid = lyxml_get_attr(xml, "message-id", NULL); |
| if (!str_msgid) { |
| session_ti_unlock(session); |
| ERR("SESSION %u: Received a <rpc-reply> with no message-id, discarding.", session->id); |
| lyxml_free(session->ctx, xml); |
| goto next_message; |
| } |
| cur_msgid = strtoul(str_msgid, &ptr, 10); |
| if (ptr[0]) { |
| session_ti_unlock(session); |
| ERR("SESSION %u: Received a <rpc-reply> with an invalid message-id (\"%s\"), discarding.", session->id, str_msgid); |
| lyxml_free(session->ctx, xml); |
| goto next_message; |
| } |
| |
| cont_ptr = &session->replies; |
| while (*cont_ptr) { |
| cont_ptr = &((*cont_ptr)->next); |
| } |
| *cont_ptr = malloc(sizeof **cont_ptr); |
| (*cont_ptr)->msg = xml; |
| (*cont_ptr)->next = NULL; |
| } |
| |
| /* we read notif, want a rpc-reply */ |
| if (msgid && (msgtype == NC_MSG_NOTIF)) { |
| if (!session->notif) { |
| session_ti_unlock(session); |
| ERR("SESSION %u: Received a <notification> but session is not subscribed.", session->id); |
| lyxml_free(session->ctx, xml); |
| goto next_message; |
| } |
| |
| cont_ptr = &session->notifs; |
| while (*cont_ptr) { |
| cont_ptr = &((*cont_ptr)->next); |
| } |
| *cont_ptr = malloc(sizeof **cont_ptr); |
| (*cont_ptr)->msg = xml; |
| (*cont_ptr)->next = NULL; |
| } |
| |
| session_ti_unlock(session); |
| |
| switch (msgtype) { |
| case NC_MSG_NOTIF: |
| /* we want a rpc-reply */ |
| if (msgid) { |
| goto next_message; |
| } |
| *msg = xml; |
| break; |
| |
| case NC_MSG_REPLY: |
| /* we want a notif */ |
| if (!msgid) { |
| goto next_message; |
| } |
| *msg = xml; |
| break; |
| |
| case NC_MSG_HELLO: |
| ERR("SESSION %u: Received another <hello> message.", session->id); |
| lyxml_free(session->ctx, xml); |
| goto next_message; |
| |
| case NC_MSG_RPC: |
| ERR("SESSION %u: Received <rpc> from NETCONF server.", session->id); |
| lyxml_free(session->ctx, xml); |
| goto next_message; |
| |
| default: |
| /* NC_MSG_WOULDBLOCK and NC_MSG_ERROR - pass it out; |
| * NC_MSG_NONE is not returned by nc_read_msg() |
| */ |
| break; |
| } |
| |
| return msgtype; |
| } |
| |
| /* cannot strictly fail, but does not need to fill any error parameter at all */ |
| static void |
| parse_rpc_error(struct ly_ctx *ctx, struct lyxml_elem *xml, struct nc_err *err) |
| { |
| struct lyxml_elem *iter, *next, *info; |
| |
| LY_TREE_FOR(xml->child, iter) { |
| if (!iter->ns) { |
| if (iter->content) { |
| WRN("<rpc-error> child \"%s\" with value \"%s\" without namespace.", iter->name, iter->content); |
| } else { |
| WRN("<rpc-error> child \"%s\" without namespace.", iter->name); |
| } |
| continue; |
| } else if (strcmp(iter->ns->value, NC_NS_BASE)) { |
| if (iter->content) { |
| WRN("<rpc-error> child \"%s\" with value \"%s\" in an unknown namespace \"%s\".", |
| iter->name, iter->content, iter->ns->value); |
| } else { |
| WRN("<rpc-error> child \"%s\" in an unknown namespace \"%s\".", iter->name, iter->ns->value); |
| } |
| continue; |
| } |
| |
| if (!strcmp(iter->name, "error-type")) { |
| if (!iter->content || (strcmp(iter->content, "transport") && strcmp(iter->content, "rpc") |
| && strcmp(iter->content, "protocol") && strcmp(iter->content, "application"))) { |
| WRN("<rpc-error> <error-type> unknown value \"%s\".", (iter->content ? iter->content : "")); |
| } else if (err->type) { |
| WRN("<rpc-error> <error-type> duplicated."); |
| } else { |
| err->type = lydict_insert(ctx, iter->content, 0); |
| } |
| } else if (!strcmp(iter->name, "error-tag")) { |
| if (!iter->content || (strcmp(iter->content, "in-use") && strcmp(iter->content, "invalid-value") |
| && strcmp(iter->content, "too-big") && strcmp(iter->content, "missing-attribute") |
| && strcmp(iter->content, "bad-attribute") && strcmp(iter->content, "unknown-attribute") |
| && strcmp(iter->content, "missing-element") && strcmp(iter->content, "bad-element") |
| && strcmp(iter->content, "unknown-element") && strcmp(iter->content, "unknown-namespace") |
| && strcmp(iter->content, "access-denied") && strcmp(iter->content, "lock-denied") |
| && strcmp(iter->content, "resource-denied") && strcmp(iter->content, "rollback-failed") |
| && strcmp(iter->content, "data-exists") && strcmp(iter->content, "data-missing") |
| && strcmp(iter->content, "operation-not-supported") && strcmp(iter->content, "operation-failed") |
| && strcmp(iter->content, "malformed-message"))) { |
| WRN("<rpc-error> <error-tag> unknown value \"%s\".", (iter->content ? iter->content : "")); |
| } else if (err->tag) { |
| WRN("<rpc-error> <error-tag> duplicated."); |
| } else { |
| err->tag = lydict_insert(ctx, iter->content, 0); |
| } |
| } else if (!strcmp(iter->name, "error-severity")) { |
| if (!iter->content || (strcmp(iter->content, "error") && strcmp(iter->content, "warning"))) { |
| WRN("<rpc-error> <error-severity> unknown value \"%s\".", (iter->content ? iter->content : "")); |
| } else if (err->severity) { |
| WRN("<rpc-error> <error-severity> duplicated."); |
| } else { |
| err->severity = lydict_insert(ctx, iter->content, 0); |
| } |
| } else if (!strcmp(iter->name, "error-app-tag")) { |
| if (err->apptag) { |
| WRN("<rpc-error> <error-app-tag> duplicated."); |
| } else { |
| err->apptag = lydict_insert(ctx, (iter->content ? iter->content : ""), 0); |
| } |
| } else if (!strcmp(iter->name, "error-path")) { |
| if (err->path) { |
| WRN("<rpc-error> <error-path> duplicated."); |
| } else { |
| err->path = lydict_insert(ctx, (iter->content ? iter->content : ""), 0); |
| } |
| } else if (!strcmp(iter->name, "error-message")) { |
| if (err->message) { |
| WRN("<rpc-error> <error-message> duplicated."); |
| } else { |
| err->message_lang = lyxml_get_attr(iter, "xml:lang", NULL); |
| if (!err->message_lang) { |
| VRB("<rpc-error> <error-message> without the recommended \"xml:lang\" attribute."); |
| } |
| err->message = lydict_insert(ctx, (iter->content ? iter->content : ""), 0); |
| } |
| } else if (!strcmp(iter->name, "error-info")) { |
| LY_TREE_FOR_SAFE(iter->child, next, info) { |
| if (info->ns && !strcmp(info->ns->value, NC_NS_BASE)) { |
| if (!strcmp(info->name, "session-id")) { |
| if (err->sid) { |
| WRN("<rpc-error> <error-info> <session-id> duplicated."); |
| } else { |
| err->sid = lydict_insert(ctx, (info->content ? info->content : ""), 0); |
| } |
| } else if (!strcmp(info->name, "bad-attr")) { |
| ++err->attr_count; |
| err->attr = realloc(err->attr, err->attr_count * sizeof *err->attr); |
| err->attr[err->attr_count - 1] = lydict_insert(ctx, (info->content ? info->content : ""), 0); |
| } else if (!strcmp(info->name, "bad-element")) { |
| ++err->elem_count; |
| err->elem = realloc(err->elem, err->elem_count * sizeof *err->elem); |
| err->elem[err->elem_count - 1] = lydict_insert(ctx, (info->content ? info->content : ""), 0); |
| } else if (!strcmp(info->name, "bad-namespace")) { |
| ++err->ns_count; |
| err->ns = realloc(err->ns, err->ns_count * sizeof *err->ns); |
| err->ns[err->ns_count - 1] = lydict_insert(ctx, (info->content ? info->content : ""), 0); |
| } else { |
| if (info->content) { |
| WRN("<rpc-error> <error-info> unknown child \"%s\" with value \"%s\".", |
| info->name, info->content); |
| } else { |
| WRN("<rpc-error> <error-info> unknown child \"%s\".", info->name); |
| } |
| } |
| } else { |
| lyxml_unlink(ctx, info); |
| ++err->other_count; |
| err->other = realloc(err->other, err->other_count * sizeof *err->other); |
| err->other[err->other_count - 1] = info; |
| } |
| } |
| } else { |
| if (iter->content) { |
| WRN("<rpc-error> unknown child \"%s\" with value \"%s\".", iter->name, iter->content); |
| } else { |
| WRN("<rpc-error> unknown child \"%s\".", iter->name); |
| } |
| } |
| } |
| } |
| |
| static struct nc_reply * |
| parse_reply(struct ly_ctx *ctx, struct lyxml_elem *xml, struct nc_rpc *rpc) |
| { |
| struct lyxml_elem *iter; |
| const struct lys_node *schema; |
| struct lyd_node *data; |
| struct nc_reply_error *error_rpl; |
| struct nc_reply_data *data_rpl; |
| struct nc_reply *reply = NULL; |
| int i; |
| |
| if (!xml->child) { |
| ERR("An empty <rpc-reply>."); |
| return NULL; |
| } |
| |
| /* rpc-error */ |
| if (!strcmp(xml->child->name, "rpc-error") && xml->child->ns && !strcmp(xml->child->ns->value, NC_NS_BASE)) { |
| /* count and check elements */ |
| i = 0; |
| LY_TREE_FOR(xml->child, iter) { |
| if (strcmp(iter->name, "rpc-error")) { |
| ERR("<rpc-reply> content mismatch (<rpc-error> and <%s>).", iter->name); |
| return NULL; |
| } else if (!iter->ns) { |
| ERR("<rpc-reply> content mismatch (<rpc-error> without namespace)."); |
| return NULL; |
| } else if (strcmp(iter->ns->value, NC_NS_BASE)) { |
| ERR("<rpc-reply> content mismatch (<rpc-error> with NS \"%s\").", iter->ns->value); |
| return NULL; |
| } |
| ++i; |
| } |
| |
| error_rpl = malloc(sizeof *error_rpl); |
| error_rpl->type = NC_REPLY_ERROR; |
| error_rpl->ctx = ctx; |
| error_rpl->err = calloc(i, sizeof *error_rpl->err); |
| error_rpl->err_count = i; |
| reply = (struct nc_reply *)error_rpl; |
| |
| i = 0; |
| LY_TREE_FOR(xml->child, iter) { |
| parse_rpc_error(ctx, iter, error_rpl->err + i); |
| ++i; |
| } |
| |
| /* ok */ |
| } else if (!strcmp(xml->child->name, "ok") && xml->child->ns && !strcmp(xml->child->ns->value, NC_NS_BASE)) { |
| if (xml->child->next) { |
| ERR("<rpc-reply> content mismatch (<ok> and <%s>).", xml->child->next->name); |
| return NULL; |
| } |
| reply = malloc(sizeof *reply); |
| reply->type = NC_REPLY_OK; |
| |
| /* some RPC output */ |
| } else { |
| switch (rpc->type) { |
| case NC_RPC_GENERIC: |
| schema = ((struct nc_rpc_generic *)rpc)->data->schema; |
| break; |
| case NC_RPC_GENERIC_XML: |
| data = lyd_parse(ctx, ((struct nc_rpc_generic_xml *)rpc)->xml_str, LYD_XML, 0); |
| if (!data) { |
| ERR("Failed to parse a generic RPC XML."); |
| return NULL; |
| } |
| schema = data->schema; |
| lyd_free(data); |
| break; |
| case NC_RPC_GETCONFIG: |
| schema = ly_ctx_get_node(ctx, "/ietf-netconf:get-config"); |
| break; |
| case NC_RPC_GET: |
| schema = ly_ctx_get_node(ctx, "/ietf-netconf:get"); |
| break; |
| case NC_RPC_GETSCHEMA: |
| schema = ly_ctx_get_node(ctx, "/ietf-netconf-monitoring:get-schema"); |
| break; |
| case NC_RPC_EDIT: |
| case NC_RPC_COPY: |
| case NC_RPC_DELETE: |
| case NC_RPC_LOCK: |
| case NC_RPC_UNLOCK: |
| case NC_RPC_KILL: |
| case NC_RPC_COMMIT: |
| case NC_RPC_DISCARD: |
| case NC_RPC_CANCEL: |
| case NC_RPC_VALIDATE: |
| case NC_RPC_SUBSCRIBE: |
| /* there is no output defined */ |
| break; |
| } |
| |
| if (!schema) { |
| ERR("%s: internal error (%s:%d).", __func__, __FILE__, __LINE__); |
| return NULL; |
| } |
| |
| data_rpl = malloc(sizeof *data_rpl); |
| data_rpl->type = NC_REPLY_DATA; |
| data_rpl->data = lyd_parse_output_xml(schema, xml, LYD_OPT_DESTRUCT); |
| if (!data_rpl->data) { |
| ERR("Failed to parse <rpc-reply>."); |
| free(data_rpl); |
| return NULL; |
| } |
| reply = (struct nc_reply *)data_rpl; |
| } |
| |
| return reply; |
| } |
| |
| API NC_MSG_TYPE |
| nc_recv_reply(struct nc_session *session, struct nc_rpc *rpc, uint64_t msgid, int timeout, struct nc_reply **reply) |
| { |
| struct lyxml_elem *xml; |
| NC_MSG_TYPE msgtype = 0; /* NC_MSG_ERROR */ |
| |
| if (!session || !reply) { |
| ERR("%s: Invalid parameter", __func__); |
| return NC_MSG_ERROR; |
| } else if (session->status != NC_STATUS_RUNNING || session->side != NC_CLIENT) { |
| ERR("%s: invalid session to receive RPC replies.", __func__); |
| return NC_MSG_ERROR; |
| } |
| *reply = NULL; |
| |
| msgtype = get_msg(session, timeout, msgid, &xml); |
| if (msgtype == NC_MSG_WOULDBLOCK) { |
| return NC_MSG_WOULDBLOCK; |
| } |
| |
| if (msgtype == NC_MSG_REPLY) { |
| *reply = parse_reply(session->ctx, xml, rpc); |
| if (!(*reply)) { |
| return NC_MSG_ERROR; |
| } |
| } |
| |
| return msgtype; |
| } |
| |
| API NC_MSG_TYPE |
| nc_recv_notif(struct nc_session *session, int timeout, struct nc_notif **notif) |
| { |
| struct lyxml_elem *xml; |
| NC_MSG_TYPE msgtype = 0; /* NC_MSG_ERROR */ |
| |
| if (!session || !notif) { |
| ERR("%s: Invalid parameter", __func__); |
| return NC_MSG_ERROR; |
| } else if (session->status != NC_STATUS_RUNNING || session->side != NC_CLIENT) { |
| ERR("%s: invalid session to receive Notifications.", __func__); |
| return NC_MSG_ERROR; |
| } |
| |
| msgtype = get_msg(session, timeout, 0, &xml); |
| if (msgtype == NC_MSG_WOULDBLOCK) { |
| return NC_MSG_WOULDBLOCK; |
| } |
| |
| if (msgtype == NC_MSG_NOTIF) { |
| *notif = malloc(sizeof **notif); |
| (*notif)->tree = lyd_parse_xml(session->ctx, xml, LYD_OPT_DESTRUCT); |
| lyxml_free(session->ctx, xml); |
| } |
| |
| return msgtype; |
| } |
| |
| static NC_MSG_TYPE |
| nc_send_hello_(struct nc_session *session) |
| { |
| int r; |
| char **cpblts; |
| |
| if (session->side == NC_CLIENT) { |
| /* client side hello - send only NETCONF base capabilities */ |
| cpblts = malloc(3 * sizeof *cpblts); |
| cpblts[0] = "urn:ietf:params:netconf:base:1.0"; |
| cpblts[1] = "urn:ietf:params:netconf:base:1.1"; |
| cpblts[2] = NULL; |
| |
| r = nc_write_msg(session, NC_MSG_HELLO, cpblts, NULL); |
| free(cpblts); |
| } |
| |
| |
| if (r) { |
| return NC_MSG_ERROR; |
| } else { |
| return NC_MSG_HELLO; |
| } |
| } |
| |
| static NC_MSG_TYPE |
| nc_send_msg(struct nc_session *session, struct lyd_node *op) |
| { |
| int r; |
| |
| if (session->ctx != op->schema->module->ctx) { |
| ERR("RPC \"%s\" was created in different context than that of \"%s\" session %u.", |
| op->schema->name, session->username, session->id); |
| return NC_MSG_ERROR; |
| } |
| |
| r = nc_write_msg(session, NC_MSG_RPC, op, NULL); |
| |
| if (r) { |
| return NC_MSG_ERROR; |
| } |
| |
| return NC_MSG_RPC; |
| } |
| |
| API NC_MSG_TYPE |
| nc_send_rpc(struct nc_session *session, struct nc_rpc *rpc, int timeout, uint64_t *msgid) |
| { |
| NC_MSG_TYPE r; |
| struct nc_rpc_generic *rpc_gen; |
| struct nc_rpc_generic_xml *rpc_gen_xml; |
| struct nc_rpc_getconfig *rpc_gc; |
| struct nc_rpc_edit *rpc_e; |
| struct nc_rpc_copy *rpc_cp; |
| struct nc_rpc_delete *rpc_del; |
| struct nc_rpc_lock *rpc_lock; |
| struct nc_rpc_get *rpc_g; |
| struct nc_rpc_kill *rpc_k; |
| struct nc_rpc_commit *rpc_com; |
| struct nc_rpc_cancel *rpc_can; |
| struct nc_rpc_validate *rpc_val; |
| struct nc_rpc_getschema *rpc_gs; |
| struct nc_rpc_subscribe *rpc_sub; |
| struct lyd_node *data, *node; |
| const struct lys_module *ietfnc, *ietfncmon, *notifs; |
| char str[11]; |
| uint64_t cur_msgid; |
| |
| if (!session || !rpc) { |
| ERR("%s: Invalid parameter", __func__); |
| return NC_MSG_ERROR; |
| } else if (session->status != NC_STATUS_RUNNING || session->side != NC_CLIENT) { |
| ERR("%s: invalid session to send RPCs.", __func__); |
| return NC_MSG_ERROR; |
| } |
| |
| if ((rpc->type != NC_RPC_GETSCHEMA) && (rpc->type != NC_RPC_GENERIC) |
| && (rpc->type != NC_RPC_GENERIC_XML) && (rpc->type != NC_RPC_SUBSCRIBE)) { |
| ietfnc = ly_ctx_get_module(session->ctx, "ietf-netconf", NULL); |
| if (!ietfnc) { |
| ERR("%s: Missing ietf-netconf schema in context (session %u)", session->id); |
| return NC_MSG_ERROR; |
| } |
| } |
| |
| switch (rpc->type) { |
| case NC_RPC_GENERIC: |
| rpc_gen = (struct nc_rpc_generic *)rpc; |
| |
| data = rpc_gen->data; |
| break; |
| |
| case NC_RPC_GENERIC_XML: |
| rpc_gen_xml = (struct nc_rpc_generic_xml *)rpc; |
| |
| data = lyd_parse(session->ctx, rpc_gen_xml->xml_str, LYD_XML, LYD_OPT_STRICT); |
| break; |
| |
| case NC_RPC_GETCONFIG: |
| rpc_gc = (struct nc_rpc_getconfig *)rpc; |
| |
| data = lyd_new(NULL, ietfnc, "get-config"); |
| node = lyd_new(data, ietfnc, "source"); |
| node = lyd_new_leaf(node, ietfnc, ncds2str[rpc_gc->source], NULL); |
| if (!node) { |
| lyd_free(data); |
| return NC_MSG_ERROR; |
| } |
| if (rpc_gc->filter) { |
| if (rpc_gc->filter[0] == '<') { |
| node = lyd_new_anyxml(data, ietfnc, "filter", rpc_gc->filter); |
| lyd_insert_attr(node, "type", "subtree"); |
| } else { |
| node = lyd_new_anyxml(data, ietfnc, "filter", NULL); |
| lyd_insert_attr(node, "type", "xpath"); |
| lyd_insert_attr(node, "select", rpc_gc->filter); |
| } |
| } |
| break; |
| |
| case NC_RPC_EDIT: |
| rpc_e = (struct nc_rpc_edit *)rpc; |
| |
| data = lyd_new(NULL, ietfnc, "edit-config"); |
| node = lyd_new(data, ietfnc, "target"); |
| node = lyd_new_leaf(node, ietfnc, ncds2str[rpc_e->target], NULL); |
| if (!node) { |
| lyd_free(data); |
| return NC_MSG_ERROR; |
| } |
| |
| if (rpc_e->default_op) { |
| node = lyd_new_leaf(data, ietfnc, "default-operation", rpcedit_dfltop2str[rpc_e->default_op]); |
| if (!node) { |
| lyd_free(data); |
| return NC_MSG_ERROR; |
| } |
| } |
| |
| if (rpc_e->test_opt) { |
| node = lyd_new_leaf(data, ietfnc, "test-option", rpcedit_testopt2str[rpc_e->test_opt]); |
| if (!node) { |
| lyd_free(data); |
| return NC_MSG_ERROR; |
| } |
| } |
| |
| if (rpc_e->error_opt) { |
| node = lyd_new_leaf(data, ietfnc, "error-option", rpcedit_erropt2str[rpc_e->error_opt]); |
| if (!node) { |
| lyd_free(data); |
| return NC_MSG_ERROR; |
| } |
| } |
| |
| if (rpc_e->edit_cont[0] == '<') { |
| node = lyd_new_anyxml(data, ietfnc, "config", rpc_e->edit_cont); |
| } else { |
| node = lyd_new_leaf(data, ietfnc, "url", rpc_e->edit_cont); |
| } |
| if (!node) { |
| lyd_free(data); |
| return NC_MSG_ERROR; |
| } |
| break; |
| |
| case NC_RPC_COPY: |
| rpc_cp = (struct nc_rpc_copy *)rpc; |
| |
| data = lyd_new(NULL, ietfnc, "copy-config"); |
| node = lyd_new(data, ietfnc, "target"); |
| if (rpc_cp->url_trg) { |
| node = lyd_new_leaf(node, ietfnc, "url", rpc_cp->url_trg); |
| } else { |
| node = lyd_new_leaf(node, ietfnc, ncds2str[rpc_cp->target], NULL); |
| } |
| if (!node) { |
| lyd_free(data); |
| return NC_MSG_ERROR; |
| } |
| |
| node = lyd_new(data, ietfnc, "source"); |
| if (rpc_cp->url_config_src) { |
| if (rpc_cp->url_config_src[0] == '<') { |
| node = lyd_new_anyxml(node, ietfnc, "config", rpc_cp->url_config_src); |
| } else { |
| node = lyd_new_leaf(node, ietfnc, "url", rpc_cp->url_config_src); |
| } |
| } else { |
| node = lyd_new_leaf(node, ietfnc, ncds2str[rpc_cp->source], NULL); |
| } |
| if (!node) { |
| lyd_free(data); |
| return NC_MSG_ERROR; |
| } |
| break; |
| |
| case NC_RPC_DELETE: |
| rpc_del = (struct nc_rpc_delete *)rpc; |
| |
| data = lyd_new(NULL, ietfnc, "delete-config"); |
| node = lyd_new(data, ietfnc, "target"); |
| if (rpc_del->url) { |
| node = lyd_new_leaf(node, ietfnc, "url", rpc_del->url); |
| } else { |
| node = lyd_new_leaf(node, ietfnc, ncds2str[rpc_del->target], NULL); |
| } |
| if (!node) { |
| lyd_free(data); |
| return NC_MSG_ERROR; |
| } |
| break; |
| |
| case NC_RPC_LOCK: |
| rpc_lock = (struct nc_rpc_lock *)rpc; |
| |
| data = lyd_new(NULL, ietfnc, "lock"); |
| node = lyd_new(data, ietfnc, "target"); |
| node = lyd_new_leaf(node, ietfnc, ncds2str[rpc_lock->target], NULL); |
| if (!node) { |
| lyd_free(data); |
| return NC_MSG_ERROR; |
| } |
| break; |
| |
| case NC_RPC_UNLOCK: |
| rpc_lock = (struct nc_rpc_lock *)rpc; |
| |
| data = lyd_new(NULL, ietfnc, "unlock"); |
| node = lyd_new(data, ietfnc, "target"); |
| node = lyd_new_leaf(node, ietfnc, ncds2str[rpc_lock->target], NULL); |
| if (!node) { |
| lyd_free(data); |
| return NC_MSG_ERROR; |
| } |
| break; |
| |
| case NC_RPC_GET: |
| rpc_g = (struct nc_rpc_get *)rpc; |
| |
| data = lyd_new(NULL, ietfnc, "get"); |
| if (rpc_g->filter) { |
| if (rpc_g->filter[0] == '<') { |
| node = lyd_new_anyxml(data, ietfnc, "filter", rpc_g->filter); |
| lyd_insert_attr(node, "type", "subtree"); |
| } else { |
| node = lyd_new_anyxml(data, ietfnc, "filter", NULL); |
| lyd_insert_attr(node, "type", "xpath"); |
| lyd_insert_attr(node, "select", rpc_g->filter); |
| } |
| if (!node) { |
| lyd_free(data); |
| return NC_MSG_ERROR; |
| } |
| } |
| break; |
| |
| case NC_RPC_KILL: |
| rpc_k = (struct nc_rpc_kill *)rpc; |
| |
| data = lyd_new(NULL, ietfnc, "kill-session"); |
| sprintf(str, "%u", rpc_k->sid); |
| lyd_new_leaf(data, ietfnc, "session-id", str); |
| break; |
| |
| case NC_RPC_COMMIT: |
| rpc_com = (struct nc_rpc_commit *)rpc; |
| |
| data = lyd_new(NULL, ietfnc, "commit"); |
| if (rpc_com->confirmed) { |
| lyd_new_leaf(data, ietfnc, "confirmed", NULL); |
| } |
| |
| if (rpc_com->confirm_timeout) { |
| sprintf(str, "%u", rpc_com->confirm_timeout); |
| lyd_new_leaf(data, ietfnc, "confirm-timeout", str); |
| } |
| |
| if (rpc_com->persist) { |
| node = lyd_new_leaf(data, ietfnc, "persist", rpc_com->persist); |
| if (!node) { |
| lyd_free(data); |
| return NC_MSG_ERROR; |
| } |
| } |
| |
| if (rpc_com->persist_id) { |
| node = lyd_new_leaf(data, ietfnc, "persist-id", rpc_com->persist_id); |
| if (!node) { |
| lyd_free(data); |
| return NC_MSG_ERROR; |
| } |
| } |
| break; |
| |
| case NC_RPC_DISCARD: |
| data = lyd_new(NULL, ietfnc, "discard-changes"); |
| break; |
| |
| case NC_RPC_CANCEL: |
| rpc_can = (struct nc_rpc_cancel *)rpc; |
| |
| data = lyd_new(NULL, ietfnc, "cancel-commit"); |
| if (rpc_can->persist_id) { |
| node = lyd_new_leaf(data, ietfnc, "persist-id", rpc_can->persist_id); |
| if (!node) { |
| lyd_free(data); |
| return NC_MSG_ERROR; |
| } |
| } |
| break; |
| |
| case NC_RPC_VALIDATE: |
| rpc_val = (struct nc_rpc_validate *)rpc; |
| |
| data = lyd_new(NULL, ietfnc, "validate"); |
| if (rpc_val->url_config_src) { |
| if (rpc_val->url_config_src[0] == '<') { |
| node = lyd_new_anyxml(data, ietfnc, "config", rpc_val->url_config_src); |
| } else { |
| node = lyd_new_leaf(data, ietfnc, "url", rpc_val->url_config_src); |
| } |
| } else { |
| node = lyd_new_leaf(data, ietfnc, ncds2str[rpc_val->source], NULL); |
| } |
| if (!node) { |
| lyd_free(data); |
| return NC_MSG_ERROR; |
| } |
| break; |
| |
| case NC_RPC_GETSCHEMA: |
| ietfncmon = ly_ctx_get_module(session->ctx, "ietf-netconf-monitoring", NULL); |
| if (!ietfncmon) { |
| ERR("%s: Missing ietf-netconf-monitoring schema in context (session %u)", session->id); |
| return NC_MSG_ERROR; |
| } |
| |
| rpc_gs = (struct nc_rpc_getschema *)rpc; |
| |
| data = lyd_new(NULL, ietfncmon, "get-schema"); |
| node = lyd_new_leaf(data, ietfncmon, "identifier", rpc_gs->identifier); |
| if (!node) { |
| lyd_free(data); |
| return NC_MSG_ERROR; |
| } |
| if (rpc_gs->version) { |
| node = lyd_new_leaf(data, ietfncmon, "version", rpc_gs->version); |
| if (!node) { |
| lyd_free(data); |
| return NC_MSG_ERROR; |
| } |
| } |
| if (rpc_gs->format) { |
| node = lyd_new_leaf(data, ietfncmon, "format", rpc_gs->format); |
| if (!node) { |
| lyd_free(data); |
| return NC_MSG_ERROR; |
| } |
| } |
| break; |
| |
| case NC_RPC_SUBSCRIBE: |
| notifs = ly_ctx_get_module(session->ctx, "notifications", NULL); |
| if (!notifs) { |
| ERR("%s: Missing notifications schema in context (session %u)", session->id); |
| return NC_MSG_ERROR; |
| } |
| |
| rpc_sub = (struct nc_rpc_subscribe *)rpc; |
| |
| data = lyd_new(NULL, notifs, "create-subscription"); |
| if (rpc_sub->stream) { |
| node = lyd_new_leaf(data, notifs, "stream", rpc_sub->stream); |
| if (!node) { |
| lyd_free(data); |
| return NC_MSG_ERROR; |
| } |
| } |
| |
| if (rpc_sub->filter) { |
| if (rpc_sub->filter[0] == '<') { |
| node = lyd_new_anyxml(data, notifs, "filter", rpc_sub->filter); |
| lyd_insert_attr(node, "type", "subtree"); |
| } else { |
| node = lyd_new_anyxml(data, notifs, "filter", NULL); |
| lyd_insert_attr(node, "type", "xpath"); |
| lyd_insert_attr(node, "select", rpc_sub->filter); |
| } |
| if (!node) { |
| lyd_free(data); |
| return NC_MSG_ERROR; |
| } |
| } |
| |
| if (rpc_sub->start) { |
| node = lyd_new_leaf(data, notifs, "startTime", rpc_sub->start); |
| if (!node) { |
| lyd_free(data); |
| return NC_MSG_ERROR; |
| } |
| } |
| |
| if (rpc_sub->stop) { |
| node = lyd_new_leaf(data, notifs, "stopTime", rpc_sub->stop); |
| if (!node) { |
| lyd_free(data); |
| return NC_MSG_ERROR; |
| } |
| } |
| break; |
| } |
| |
| if (lyd_validate(data, LYD_OPT_STRICT)) { |
| lyd_free(data); |
| return NC_MSG_ERROR; |
| } |
| |
| r = session_ti_lock(session, timeout); |
| if (r != 0) { |
| /* error or blocking */ |
| r = NC_MSG_WOULDBLOCK; |
| } else { |
| /* send RPC, store its message ID */ |
| r = nc_send_msg(session, data); |
| cur_msgid = session->msgid; |
| } |
| session_ti_unlock(session); |
| |
| lyd_free(data); |
| |
| if (r != NC_MSG_RPC) { |
| return r; |
| } |
| |
| *msgid = cur_msgid; |
| return NC_MSG_RPC; |
| } |