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gerrit.cesnet.cz / github / CESNET / libnetconf2 / ff8ddc05a0581fe384b9faf75ad142956fbd5bd0 / . / src / session_client.c
blob: c4872cd833fc307ef12b79fc438e0fcc49d437c5 [file] [log] [blame]
/**
* \file session_client.c
* \author Michal Vasko <mvasko@cesnet.cz>
* \brief libnetconf2 session client functions
*
* Copyright (c) 2015 CESNET, z.s.p.o.
*
* This source code is licensed under BSD 3-Clause License (the "License").
* You may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://opensource.org/licenses/BSD-3-Clause
*/
#include <assert.h>
#include <errno.h>
#include <fcntl.h>
#include <netdb.h>
#include <netinet/in.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 <arpa/inet.h>
#include <poll.h>
#include <libyang/libyang.h>
#include "libnetconf.h"
#include "session_client.h"
#include "messages_client.h"
static const char *ncds2str[] = {NULL, "config", "url", "running", "startup", "candidate"};
struct nc_client_opts client_opts;
API int
nc_client_set_schema_searchpath(const char *path)
{
if (client_opts.schema_searchpath) {
free(client_opts.schema_searchpath);
}
if (path) {
client_opts.schema_searchpath = strdup(path);
if (!client_opts.schema_searchpath) {
ERRMEM;
return 1;
}
} else {
client_opts.schema_searchpath = NULL;
}
return 0;
}
API const char *
nc_client_get_schema_searchpath(void)
{
return client_opts.schema_searchpath;
}
/* SCHEMAS_DIR not used (implicitly) */
static int
ctx_check_and_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) {
ERR("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(revision);
if (!module) {
WRN("Failed to load model \"%s\".", model_name);
free(model_name);
return 1;
}
free(model_name);
/* 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;
}
/* SCHEMAS_DIR used as the last resort */
static int
ctx_check_and_load_ietf_netconf(struct ly_ctx *ctx, const char **cpblts)
{
int i;
const struct lys_module *ietfnc;
ietfnc = ly_ctx_get_module(ctx, "ietf-netconf", NULL);
if (!ietfnc) {
ietfnc = ly_ctx_load_module(ctx, "ietf-netconf", NULL);
if (!ietfnc) {
ietfnc = lys_parse_path(ctx, SCHEMAS_DIR"/ietf-netconf.yin", LYS_IN_YIN);
}
}
if (!ietfnc) {
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 *mod_name, const char *mod_rev, const char *submod_name, const char *submod_rev,
void *user_data, LYS_INFORMAT *format, void (**free_model_data)(void *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;
struct nc_reply_error *error_rpl;
struct lyd_node_anydata *get_schema_data;
NC_MSG_TYPE msg;
char *model_data = NULL;
uint64_t msgid;
if (submod_name) {
rpc = nc_rpc_getschema(submod_name, submod_rev, "yang", NC_PARAMTYPE_CONST);
} else {
rpc = nc_rpc_getschema(mod_name, mod_rev, "yang", NC_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("Session %u: failed to send the <get-schema> RPC.", session->id);
nc_rpc_free(rpc);
return NULL;
}
do {
msg = nc_recv_reply(session, rpc, msgid, 1000, 0, &reply);
} while (msg == NC_MSG_NOTIF);
nc_rpc_free(rpc);
if (msg == NC_MSG_WOULDBLOCK) {
ERR("Session %u: timeout for receiving reply to a <get-schema> expired.", session->id);
return NULL;
} else if (msg == NC_MSG_ERROR) {
ERR("Session %u: failed to receive a reply to <get-schema>.", session->id);
return NULL;
}
switch (reply->type) {
case NC_RPL_OK:
ERR("Session %u: unexpected reply OK to a <get-schema> RPC.", session->id);
nc_reply_free(reply);
return NULL;
case NC_RPL_DATA:
/* fine */
break;
case NC_RPL_ERROR:
error_rpl = (struct nc_reply_error *)reply;
if (error_rpl->count) {
ERR("Session %u: error reply to a <get-schema> RPC (tag \"%s\", message \"%s\").",
session->id, error_rpl->err[0].tag, error_rpl->err[0].message);
} else {
ERR("Session %u: unexpected reply error to a <get-schema> RPC.", session->id);
}
nc_reply_free(reply);
return NULL;
case NC_RPL_NOTIF:
ERR("Session %u: unexpected reply notification to a <get-schema> RPC.", session->id);
nc_reply_free(reply);
return NULL;
}
data_rpl = (struct nc_reply_data *)reply;
if ((data_rpl->data->schema->nodetype != LYS_RPC) || strcmp(data_rpl->data->schema->name, "get-schema")
|| !data_rpl->data->child || (data_rpl->data->child->schema->nodetype != LYS_ANYXML)) {
ERR("Session %u: unexpected data in reply to a <get-schema> RPC.", session->id);
nc_reply_free(reply);
return NULL;
}
get_schema_data = (struct lyd_node_anydata *)data_rpl->data->child;
switch (get_schema_data->value_type) {
case LYD_ANYDATA_CONSTSTRING:
case LYD_ANYDATA_STRING:
model_data = strdup(get_schema_data->value.str);
break;
case LYD_ANYDATA_DATATREE:
lyd_print_mem(&model_data, get_schema_data->value.tree, LYD_XML, LYP_WITHSIBLINGS);
break;
case LYD_ANYDATA_XML:
lyxml_print_mem(&model_data, get_schema_data->value.xml, LYXML_PRINT_SIBLINGS);
break;
case LYD_ANYDATA_JSON:
case LYD_ANYDATA_JSOND:
case LYD_ANYDATA_SXML:
case LYD_ANYDATA_SXMLD:
ERRINT;
break;
}
nc_reply_free(reply);
*free_model_data = free;
*format = LYS_IN_YANG;
return model_data;
}
/* return 0 - ok, 1 - some models failed to load, -1 - error */
int
nc_ctx_check_and_fill(struct nc_session *session)
{
int i, get_schema_support = 0, ret = 0, r;
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)) {
get_schema_support = 1;
break;
}
}
/* get-schema is supported, load local ietf-netconf-monitoring so we can create <get-schema> RPCs */
if (get_schema_support && !ly_ctx_get_module(session->ctx, "ietf-netconf-monitoring", NULL)) {
if (lys_parse_path(session->ctx, SCHEMAS_DIR"/ietf-netconf-monitoring.yin", LYS_IN_YIN)) {
/* 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>.");
}
}
/* load base model disregarding whether it's in capabilities (but NETCONF capabilities are used to enable features) */
if (ctx_check_and_load_ietf_netconf(session->ctx, session->cpblts)) {
if (old_clb) {
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;
}
r = ctx_check_and_load_model(session, session->cpblts[i]);
if (r == -1) {
ret = -1;
break;
}
/* failed to load schema, but let's try to find it using user callback (or locally, if not set),
* if it was using get-schema */
if (r == 1) {
if (get_schema_support) {
VRB("Trying to load the schema from a different source.");
/* works even if old_clb is NULL */
ly_ctx_set_module_clb(session->ctx, old_clb, old_data);
r = ctx_check_and_load_model(session, session->cpblts[i]);
}
/* fail again (or no other way to try), too bad */
if (r) {
ret = 1;
}
/* set get-schema callback back */
ly_ctx_set_module_clb(session->ctx, &libyang_module_clb, session);
}
}
if (old_clb) {
ly_ctx_set_module_clb(session->ctx, old_clb, old_data);
}
if (ret == 1) {
WRN("Some models failed to be loaded, any data from these models will be ignored.");
}
return ret;
}
API struct nc_session *
nc_connect_inout(int fdin, int fdout, struct ly_ctx *ctx)
{
struct nc_session *session;
if (fdin < 0) {
ERRARG("fdin");
return NULL;
} else if (fdout < 0) {
ERRARG("fdout");
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);
/* definitely should not happen, but be ready */
if (!ctx && !(ctx = ly_ctx_new(NULL))) {
/* that's just it */
goto fail;
}
} else {
session->flags |= NC_SESSION_SHAREDCTX;
}
session->ctx = ctx;
/* NETCONF handshake */
if (nc_handshake(session) != NC_MSG_HELLO) {
goto fail;
}
session->status = NC_STATUS_RUNNING;
if (nc_ctx_check_and_fill(session) == -1) {
goto fail;
}
return session;
fail:
nc_session_free(session, NULL);
return NULL;
}
int
nc_sock_connect(const char* host, uint16_t port)
{
int i, sock = -1, flags;
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;
}
/* make the socket non-blocking */
if (((flags = fcntl(sock, F_GETFL)) == -1) || (fcntl(sock, F_SETFL, flags | O_NONBLOCK) == -1)) {
ERR("Fcntl failed (%s).", strerror(errno));
close(sock);
return -1;
}
/* 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;
}
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, **cont_ptr;
NC_MSG_TYPE msgtype = 0; /* NC_MSG_ERROR */
r = nc_timedlock(session->ti_lock, timeout);
if (r == -1) {
/* error */
return NC_MSG_ERROR;
} else if (!r) {
/* 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;
xml = cont->msg;
free(cont);
msgtype = NC_MSG_NOTIF;
}
/* try to get rpc-reply from the session's queue */
if (msgid && session->replies) {
cont = session->replies;
session->replies = cont->next;
xml = cont->msg;
free(cont);
msgtype = NC_MSG_REPLY;
}
if (!msgtype) {
/* read message from wire */
msgtype = nc_read_msg_poll(session, timeout, &xml);
}
/* we read rpc-reply, want a notif */
if (!msgid && (msgtype == NC_MSG_REPLY)) {
cont_ptr = &session->replies;
while (*cont_ptr) {
cont_ptr = &((*cont_ptr)->next);
}
*cont_ptr = malloc(sizeof **cont_ptr);
if (!*cont_ptr) {
ERRMEM;
pthread_mutex_unlock(session->ti_lock);
lyxml_free(session->ctx, xml);
return NC_MSG_ERROR;
}
(*cont_ptr)->msg = xml;
(*cont_ptr)->next = NULL;
}
/* we read notif, want a rpc-reply */
if (msgid && (msgtype == NC_MSG_NOTIF)) {
/* TODO check whether the session is even subscribed */
/*if (!session->notif) {
pthread_mutex_unlock(session->ti_lock);
ERR("Session %u: received a <notification> but session is not subscribed.", session->id);
lyxml_free(session->ctx, xml);
return NC_MSG_ERROR;
}*/
cont_ptr = &session->notifs;
while (*cont_ptr) {
cont_ptr = &((*cont_ptr)->next);
}
*cont_ptr = malloc(sizeof **cont_ptr);
if (!cont_ptr) {
ERRMEM;
pthread_mutex_unlock(session->ti_lock);
lyxml_free(session->ctx, xml);
return NC_MSG_ERROR;
}
(*cont_ptr)->msg = xml;
(*cont_ptr)->next = NULL;
}
pthread_mutex_unlock(session->ti_lock);
switch (msgtype) {
case NC_MSG_NOTIF:
if (!msgid) {
*msg = xml;
}
break;
case NC_MSG_REPLY:
if (msgid) {
/* check message-id */
str_msgid = lyxml_get_attr(xml, "message-id", NULL);
if (!str_msgid) {
ERR("Session %u: received a <rpc-reply> without a message-id.", session->id);
msgtype = NC_MSG_REPLY_ERR_MSGID;
} else {
cur_msgid = strtoul(str_msgid, &ptr, 10);
if (cur_msgid != msgid) {
ERR("Session %u: received a <rpc-reply> with an unexpected message-id \"%s\".",
session->id, str_msgid);
msgtype = NC_MSG_REPLY_ERR_MSGID;
}
}
*msg = xml;
}
break;
case NC_MSG_HELLO:
ERR("Session %u: received another <hello> message.", session->id);
lyxml_free(session->ctx, xml);
msgtype = NC_MSG_ERROR;
break;
case NC_MSG_RPC:
ERR("Session %u: received <rpc> from a NETCONF server.", session->id);
lyxml_free(session->ctx, xml);
msgtype = NC_MSG_ERROR;
break;
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 = nc_realloc(err->attr, err->attr_count * sizeof *err->attr);
if (!err->attr) {
ERRMEM;
return;
}
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 = nc_realloc(err->elem, err->elem_count * sizeof *err->elem);
if (!err->elem) {
ERRMEM;
return;
}
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 = nc_realloc(err->ns, err->ns_count * sizeof *err->ns);
if (!err->ns) {
ERRMEM;
return;
}
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 = nc_realloc(err->other, err->other_count * sizeof *err->other);
if (!err->other) {
ERRMEM;
return;
}
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, int parseroptions)
{
struct lyxml_elem *iter;
const struct lys_node *schema = NULL;
struct lyd_node *data = NULL, *next, *elem;
struct nc_client_reply_error *error_rpl;
struct nc_reply_data *data_rpl;
struct nc_reply *reply = NULL;
struct nc_rpc_act_generic *rpc_gen;
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);
if (!error_rpl) {
ERRMEM;
return NULL;
}
error_rpl->type = NC_RPL_ERROR;
error_rpl->err = calloc(i, sizeof *error_rpl->err);
if (!error_rpl->err) {
ERRMEM;
free(error_rpl);
return NULL;
}
error_rpl->count = i;
error_rpl->ctx = ctx;
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);
if (!reply) {
ERRMEM;
return NULL;
}
reply->type = NC_RPL_OK;
/* some RPC output */
} else {
switch (rpc->type) {
case NC_RPC_ACT_GENERIC:
rpc_gen = (struct nc_rpc_act_generic *)rpc;
if (rpc_gen->has_data) {
data = rpc_gen->content.data;
} else {
data = lyd_parse_mem(ctx, rpc_gen->content.xml_str, LYD_XML, LYD_OPT_RPC | parseroptions, NULL);
if (!data) {
ERR("Failed to parse a generic RPC/action XML.");
return NULL;
}
}
if (data->schema->nodetype == LYS_RPC) {
/* RPC */
schema = data->schema;
} else {
/* action */
LY_TREE_DFS_BEGIN(data, next, elem) {
if (elem->schema->nodetype == LYS_ACTION) {
schema = elem->schema;
break;
}
LY_TREE_DFS_END(data, next, elem);
}
}
/* cleanup */
if (data != rpc_gen->content.data) {
lyd_free(data);
data = NULL;
}
if (!schema) {
/* only with action, if there is no action, it should not have gotten this far */
ERRINT;
return NULL;
}
break;
case NC_RPC_GETCONFIG:
case NC_RPC_GET:
if (!xml->child->child) {
/* we did not receive any data */
data_rpl = malloc(sizeof *data_rpl);
if (!data_rpl) {
ERRMEM;
return NULL;
}
data_rpl->type = NC_RPL_DATA;
data_rpl->data = NULL;
return (struct nc_reply *)data_rpl;
}
/* special treatment */
data = lyd_parse_xml(ctx, &xml->child->child, LYD_OPT_DESTRUCT
| (rpc->type == NC_RPC_GETCONFIG ? LYD_OPT_GETCONFIG : LYD_OPT_GET) | parseroptions);
if (!data) {
ERR("Failed to parse <%s> reply.", (rpc->type == NC_RPC_GETCONFIG ? "get-config" : "get"));
return NULL;
}
break;
case NC_RPC_GETSCHEMA:
schema = ly_ctx_get_node(ctx, NULL, "/ietf-netconf-monitoring:get-schema");
if (!schema) {
ERRINT;
return NULL;
}
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 */
ERR("Unexpected data reply (root elem \"%s\").", xml->child->name);
return NULL;
default:
ERRINT;
return NULL;
}
data_rpl = malloc(sizeof *data_rpl);
if (!data_rpl) {
ERRMEM;
return NULL;
}
data_rpl->type = NC_RPL_DATA;
if (!data) {
data_rpl->data = lyd_parse_xml(ctx, &xml->child, LYD_OPT_RPCREPLY | LYD_OPT_DESTRUCT | parseroptions,
schema, NULL);
} else {
/* <get>, <get-config> */
data_rpl->data = data;
}
if (!data_rpl->data) {
ERR("Failed to parse <rpc-reply>.");
free(data_rpl);
return NULL;
}
reply = (struct nc_reply *)data_rpl;
}
return reply;
}
#if defined(NC_ENABLED_SSH) || defined(NC_ENABLED_TLS)
int
nc_client_ch_add_bind_listen(const char *address, uint16_t port, NC_TRANSPORT_IMPL ti)
{
int sock;
if (!address) {
ERRARG("address");
return -1;
} else if (!port) {
ERRARG("port");
return -1;
}
sock = nc_sock_listen(address, port);
if (sock == -1) {
return -1;
}
++client_opts.ch_bind_count;
client_opts.ch_binds = nc_realloc(client_opts.ch_binds, client_opts.ch_bind_count * sizeof *client_opts.ch_binds);
if (!client_opts.ch_binds) {
ERRMEM;
close(sock);
return -1;
}
client_opts.ch_binds[client_opts.ch_bind_count - 1].address = strdup(address);
if (!client_opts.ch_binds[client_opts.ch_bind_count - 1].address) {
ERRMEM;
close(sock);
return -1;
}
client_opts.ch_binds[client_opts.ch_bind_count - 1].port = port;
client_opts.ch_binds[client_opts.ch_bind_count - 1].sock = sock;
client_opts.ch_binds[client_opts.ch_bind_count - 1].ti = ti;
return 0;
}
int
nc_client_ch_del_bind(const char *address, uint16_t port, NC_TRANSPORT_IMPL ti)
{
uint32_t i;
int ret = -1;
if (!address && !port && !ti) {
for (i = 0; i < client_opts.ch_bind_count; ++i) {
close(client_opts.ch_binds[i].sock);
free((char *)client_opts.ch_binds[i].address);
ret = 0;
}
free(client_opts.ch_binds);
client_opts.ch_binds = NULL;
client_opts.ch_bind_count = 0;
} else {
for (i = 0; i < client_opts.ch_bind_count; ++i) {
if ((!address || !strcmp(client_opts.ch_binds[i].address, address))
&& (!port || (client_opts.ch_binds[i].port == port))
&& (!ti || (client_opts.ch_binds[i].ti == ti))) {
close(client_opts.ch_binds[i].sock);
free((char *)client_opts.ch_binds[i].address);
--client_opts.ch_bind_count;
memcpy(&client_opts.ch_binds[i], &client_opts.ch_binds[client_opts.ch_bind_count], sizeof *client_opts.ch_binds);
ret = 0;
}
}
}
return ret;
}
API int
nc_accept_callhome(int timeout, struct ly_ctx *ctx, struct nc_session **session)
{
int sock;
char *host = NULL;
uint16_t port, idx;
if (!client_opts.ch_binds) {
ERRINIT;
return -1;
} else if (!session) {
ERRARG("session");
return -1;
}
sock = nc_sock_accept_binds(client_opts.ch_binds, client_opts.ch_bind_count, timeout, &host, &port, &idx);
if (sock < 1) {
free(host);
return sock;
}
#ifdef NC_ENABLED_SSH
if (client_opts.ch_binds[idx].ti == NC_TI_LIBSSH) {
*session = nc_accept_callhome_ssh_sock(sock, host, port, ctx, NC_TRANSPORT_TIMEOUT);
} else
#endif
#ifdef NC_ENABLED_TLS
if (client_opts.ch_binds[idx].ti == NC_TI_OPENSSL) {
*session = nc_accept_callhome_tls_sock(sock, host, port, ctx, NC_TRANSPORT_TIMEOUT);
} else
#endif
{
close(sock);
*session = NULL;
}
free(host);
if (!(*session)) {
return -1;
}
return 1;
}
#endif /* NC_ENABLED_SSH || NC_ENABLED_TLS */
API const char **
nc_session_get_cpblts(const struct nc_session *session)
{
if (!session) {
ERRARG("session");
return NULL;
}
return session->cpblts;
}
API const char *
nc_session_cpblt(const struct nc_session *session, const char *capab)
{
int i, len;
if (!session) {
ERRARG("session");
return NULL;
} else if (!capab) {
ERRARG("capab");
return NULL;
}
len = strlen(capab);
for (i = 0; session->cpblts[i]; ++i) {
if (!strncmp(session->cpblts[i], capab, len)) {
return session->cpblts[i];
}
}
return NULL;
}
API int
nc_session_ntf_thread_running(const struct nc_session *session)
{
if (!session) {
ERRARG("session");
return 0;
}
return session->ntf_tid ? 1 : 0;
}
API void
nc_client_init(void)
{
nc_init();
}
API void
nc_client_destroy(void)
{
nc_client_set_schema_searchpath(NULL);
#if defined(NC_ENABLED_SSH) || defined(NC_ENABLED_TLS)
nc_client_ch_del_bind(NULL, 0, 0);
#endif
#ifdef NC_ENABLED_SSH
nc_client_ssh_destroy_opts();
#endif
#ifdef NC_ENABLED_TLS
nc_client_tls_destroy_opts();
#endif
nc_destroy();
}
API NC_MSG_TYPE
nc_recv_reply(struct nc_session *session, struct nc_rpc *rpc, uint64_t msgid, int timeout, int parseroptions, struct nc_reply **reply)
{
struct lyxml_elem *xml;
NC_MSG_TYPE msgtype = 0; /* NC_MSG_ERROR */
if (!session) {
ERRARG("session");
return NC_MSG_ERROR;
} else if (!rpc) {
ERRARG("rpc");
return NC_MSG_ERROR;
} else if (!reply) {
ERRARG("reply");
return NC_MSG_ERROR;
} else if (parseroptions & LYD_OPT_TYPEMASK) {
ERRARG("parseroptions");
return NC_MSG_ERROR;
} else if ((session->status != NC_STATUS_RUNNING) || (session->side != NC_CLIENT)) {
ERR("Session %u: invalid session to receive RPC replies.", session->id);
return NC_MSG_ERROR;
}
parseroptions &= ~(LYD_OPT_DESTRUCT | LYD_OPT_NOSIBLINGS);
*reply = NULL;
msgtype = get_msg(session, timeout, msgid, &xml);
if ((msgtype == NC_MSG_REPLY) || (msgtype == NC_MSG_REPLY_ERR_MSGID)) {
*reply = parse_reply(session->ctx, xml, rpc, parseroptions);
lyxml_free(session->ctx, xml);
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, *ev_time;
NC_MSG_TYPE msgtype = 0; /* NC_MSG_ERROR */
if (!session) {
ERRARG("session");
return NC_MSG_ERROR;
} else if (!notif) {
ERRARG("notif");
return NC_MSG_ERROR;
} else if (session->status != NC_STATUS_RUNNING || session->side != NC_CLIENT) {
ERR("Session %u: invalid session to receive Notifications.", session->id);
return NC_MSG_ERROR;
}
msgtype = get_msg(session, timeout, 0, &xml);
if (msgtype == NC_MSG_NOTIF) {
*notif = calloc(1, sizeof **notif);
if (!*notif) {
ERRMEM;
lyxml_free(session->ctx, xml);
return NC_MSG_ERROR;
}
/* eventTime */
LY_TREE_FOR(xml->child, ev_time) {
if (!strcmp(ev_time->name, "eventTime")) {
(*notif)->datetime = lydict_insert(session->ctx, ev_time->content, 0);
/* lyd_parse does not know this element */
lyxml_free(session->ctx, ev_time);
break;
}
}
if (!(*notif)->datetime) {
ERR("Session %u: notification is missing the \"eventTime\" element.", session->id);
goto fail;
}
/* notification body */
(*notif)->tree = lyd_parse_xml(session->ctx, &xml->child, LYD_OPT_NOTIF | LYD_OPT_DESTRUCT, NULL);
lyxml_free(session->ctx, xml);
xml = NULL;
if (!(*notif)->tree) {
ERR("Session %u: failed to parse a new notification.", session->id);
goto fail;
}
}
return msgtype;
fail:
lydict_remove(session->ctx, (*notif)->datetime);
lyd_free((*notif)->tree);
free(*notif);
*notif = NULL;
lyxml_free(session->ctx, xml);
return NC_MSG_ERROR;
}
static void *
nc_recv_notif_thread(void *arg)
{
struct nc_ntf_thread_arg *ntarg;
struct nc_session *session;
void (*notif_clb)(struct nc_session *session, const struct nc_notif *notif);
struct nc_notif *notif;
NC_MSG_TYPE msgtype;
ntarg = (struct nc_ntf_thread_arg *)arg;
session = ntarg->session;
notif_clb = ntarg->notif_clb;
free(ntarg);
while (session->ntf_tid) {
msgtype = nc_recv_notif(session, 0, &notif);
if (msgtype == NC_MSG_NOTIF) {
notif_clb(session, notif);
if (!strcmp(notif->tree->schema->name, "notificationComplete")
&& !strcmp(notif->tree->schema->module->name, "nc-notifications")) {
nc_notif_free(notif);
break;
}
nc_notif_free(notif);
} else if (msgtype == NC_MSG_ERROR) {
break;
}
usleep(NC_CLIENT_NOTIF_THREAD_SLEEP);
}
VRB("Session %u: notification thread exit.", session->id);
session->ntf_tid = NULL;
return NULL;
}
API int
nc_recv_notif_dispatch(struct nc_session *session, void (*notif_clb)(struct nc_session *session, const struct nc_notif *notif))
{
struct nc_ntf_thread_arg *ntarg;
int ret;
if (!session) {
ERRARG("session");
return -1;
} else if (!notif_clb) {
ERRARG("notif_clb");
return -1;
} else if ((session->status != NC_STATUS_RUNNING) || (session->side != NC_CLIENT)) {
ERR("Session %u: invalid session to receive Notifications.", session->id);
return -1;
} else if (session->ntf_tid) {
ERR("Session %u: separate notification thread is already running.", session->id);
return -1;
}
ntarg = malloc(sizeof *ntarg);
if (!ntarg) {
ERRMEM;
return -1;
}
ntarg->session = session;
ntarg->notif_clb = notif_clb;
/* just so that nc_recv_notif_thread() does not immediately exit, the value does not matter */
session->ntf_tid = malloc(sizeof *session->ntf_tid);
if (!session->ntf_tid) {
ERRMEM;
free(ntarg);
return -1;
}
ret = pthread_create((pthread_t *)session->ntf_tid, NULL, nc_recv_notif_thread, ntarg);
if (ret) {
ERR("Session %u: failed to create a new thread (%s).", strerror(errno));
free(ntarg);
free((pthread_t *)session->ntf_tid);
session->ntf_tid = NULL;
return -1;
}
return 0;
}
API NC_MSG_TYPE
nc_send_rpc(struct nc_session *session, struct nc_rpc *rpc, int timeout, uint64_t *msgid)
{
NC_MSG_TYPE r;
int ret;
struct nc_rpc_act_generic *rpc_gen;
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 = NULL, *ietfncmon, *notifs, *ietfncwd = NULL;
char str[11];
uint64_t cur_msgid;
if (!session) {
ERRARG("session");
return NC_MSG_ERROR;
} else if (!rpc) {
ERRARG("rpc");
return NC_MSG_ERROR;
} else if (!msgid) {
ERRARG("msgid");
return NC_MSG_ERROR;
} else if (session->status != NC_STATUS_RUNNING || session->side != NC_CLIENT) {
ERR("Session %u: invalid session to send RPCs.", session->id);
return NC_MSG_ERROR;
}
if ((rpc->type != NC_RPC_GETSCHEMA) && (rpc->type != NC_RPC_ACT_GENERIC) && (rpc->type != NC_RPC_SUBSCRIBE)) {
ietfnc = ly_ctx_get_module(session->ctx, "ietf-netconf", NULL);
if (!ietfnc) {
ERR("Session %u: missing ietf-netconf schema in the context.", session->id);
return NC_MSG_ERROR;
}
}
switch (rpc->type) {
case NC_RPC_ACT_GENERIC:
rpc_gen = (struct nc_rpc_act_generic *)rpc;
if (rpc_gen->has_data) {
data = rpc_gen->content.data;
} else {
data = lyd_parse_mem(session->ctx, rpc_gen->content.xml_str, LYD_XML, LYD_OPT_RPC | LYD_OPT_STRICT, NULL);
}
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] || (rpc_gc->filter[0] == '<')) {
node = lyd_new_anydata(data, ietfnc, "filter", rpc_gc->filter, LYD_ANYDATA_CONSTSTRING);
lyd_insert_attr(node, NULL, "type", "subtree");
} else {
node = lyd_new_anydata(data, ietfnc, "filter", NULL, LYD_ANYDATA_CONSTSTRING);
lyd_insert_attr(node, NULL, "type", "xpath");
lyd_insert_attr(node, NULL, "select", rpc_gc->filter);
}
if (!node) {
lyd_free(data);
return NC_MSG_ERROR;
}
}
if (rpc_gc->wd_mode) {
if (!ietfncwd) {
ietfncwd = ly_ctx_get_module(session->ctx, "ietf-netconf-with-defaults", NULL);
if (!ietfncwd) {
ERR("Session %u: missing ietf-netconf-with-defaults schema in the context.", session->id);
return NC_MSG_ERROR;
}
}
switch (rpc_gc->wd_mode) {
case NC_WD_UNKNOWN:
/* cannot get here */
break;
case NC_WD_ALL:
node = lyd_new_leaf(data, ietfncwd, "with-defaults", "report-all");
break;
case NC_WD_ALL_TAG:
node = lyd_new_leaf(data, ietfncwd, "with-defaults", "report-all-tagged");
break;
case NC_WD_TRIM:
node = lyd_new_leaf(data, ietfncwd, "with-defaults", "trim");
break;
case NC_WD_EXPLICIT:
node = lyd_new_leaf(data, ietfncwd, "with-defaults", "explicit");
break;
}
if (!node) {
lyd_free(data);
return NC_MSG_ERROR;
}
}
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] || (rpc_e->edit_cont[0] == '<')) {
node = lyd_new_anydata(data, ietfnc, "config", rpc_e->edit_cont, LYD_ANYDATA_CONSTSTRING);
} 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] || (rpc_cp->url_config_src[0] == '<')) {
node = lyd_new_anydata(node, ietfnc, "config", rpc_cp->url_config_src, LYD_ANYDATA_CONSTSTRING);
} 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;
}
if (rpc_cp->wd_mode) {
if (!ietfncwd) {
ietfncwd = ly_ctx_get_module(session->ctx, "ietf-netconf-with-defaults", NULL);
if (!ietfncwd) {
ERR("Session %u: missing ietf-netconf-with-defaults schema in the context.", session->id);
return NC_MSG_ERROR;
}
}
switch (rpc_cp->wd_mode) {
case NC_WD_UNKNOWN:
/* cannot get here */
break;
case NC_WD_ALL:
node = lyd_new_leaf(data, ietfncwd, "with-defaults", "report-all");
break;
case NC_WD_ALL_TAG:
node = lyd_new_leaf(data, ietfncwd, "with-defaults", "report-all-tagged");
break;
case NC_WD_TRIM:
node = lyd_new_leaf(data, ietfncwd, "with-defaults", "trim");
break;
case NC_WD_EXPLICIT:
node = lyd_new_leaf(data, ietfncwd, "with-defaults", "explicit");
break;
}
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] || (rpc_g->filter[0] == '<')) {
node = lyd_new_anydata(data, ietfnc, "filter", rpc_g->filter, LYD_ANYDATA_CONSTSTRING);
lyd_insert_attr(node, NULL, "type", "subtree");
} else {
node = lyd_new_anydata(data, ietfnc, "filter", NULL, LYD_ANYDATA_CONSTSTRING);
lyd_insert_attr(node, NULL, "type", "xpath");
lyd_insert_attr(node, NULL, "select", rpc_g->filter);
}
if (!node) {
lyd_free(data);
return NC_MSG_ERROR;
}
}
if (rpc_g->wd_mode) {
if (!ietfncwd) {
ietfncwd = ly_ctx_get_module(session->ctx, "ietf-netconf-with-defaults", NULL);
if (!ietfncwd) {
ERR("Session %u: missing ietf-netconf-with-defaults schema in the context.", session->id);
return NC_MSG_ERROR;
}
}
switch (rpc_g->wd_mode) {
case NC_WD_UNKNOWN:
/* cannot get here */
break;
case NC_WD_ALL:
node = lyd_new_leaf(data, ietfncwd, "with-defaults", "report-all");
break;
case NC_WD_ALL_TAG:
node = lyd_new_leaf(data, ietfncwd, "with-defaults", "report-all-tagged");
break;
case NC_WD_TRIM:
node = lyd_new_leaf(data, ietfncwd, "with-defaults", "trim");
break;
case NC_WD_EXPLICIT:
node = lyd_new_leaf(data, ietfncwd, "with-defaults", "explicit");
break;
}
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");
node = lyd_new(data, ietfnc, "source");
if (rpc_val->url_config_src) {
if (!rpc_val->url_config_src[0] || (rpc_val->url_config_src[0] == '<')) {
node = lyd_new_anydata(node, ietfnc, "config", rpc_val->url_config_src, LYD_ANYDATA_CONSTSTRING);
} else {
node = lyd_new_leaf(node, ietfnc, "url", rpc_val->url_config_src);
}
} else {
node = lyd_new_leaf(node, 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("Session %u: missing ietf-netconf-monitoring schema in the context.", 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("Session %u: missing notifications schema in the context.", 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] || (rpc_sub->filter[0] == '<')) {
node = lyd_new_anydata(data, notifs, "filter", rpc_sub->filter, LYD_ANYDATA_CONSTSTRING);
lyd_insert_attr(node, NULL, "type", "subtree");
} else {
node = lyd_new_anydata(data, notifs, "filter", NULL, LYD_ANYDATA_CONSTSTRING);
lyd_insert_attr(node, NULL, "type", "xpath");
lyd_insert_attr(node, NULL, "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;
default:
ERRINT;
return NC_MSG_ERROR;
}
if (lyd_validate(&data, LYD_OPT_RPC | LYD_OPT_STRICT, NULL)) {
lyd_free(data);
return NC_MSG_ERROR;
}
ret = nc_timedlock(session->ti_lock, timeout);
if (ret == -1) {
/* error */
r = NC_MSG_ERROR;
} else if (!ret) {
/* blocking */
r = NC_MSG_WOULDBLOCK;
} else {
/* send RPC, store its message ID */
r = nc_send_msg(session, data);
cur_msgid = session->msgid;
}
pthread_mutex_unlock(session->ti_lock);
lyd_free(data);
if (r != NC_MSG_RPC) {
return r;
}
*msgid = cur_msgid;
return NC_MSG_RPC;
}