/* Signal handler - controls main loop */
void
signal_handler(int sig)
{
nc_verb_verbose("Signal %d received.", sig);
switch (sig) {
case SIGINT:
case SIGTERM:
case SIGQUIT:
case SIGABRT:
case SIGKILL:
if (mainloop == 0) {
/* first attempt */
mainloop = 1;
} else {
/* second attempt */
nc_verb_error("Hey! I need some time, be patient next time!");
exit(EXIT_FAILURE);
}
break;
default:
nc_verb_error("Exiting on signal: %d", sig);
exit(EXIT_FAILURE);
break;
}
}
/* !DO NOT ALTER FUNCTION SIGNATURE! */
int callback_n_netopeer_n_modules_n_module_n_enabled(void** UNUSED(data), XMLDIFF_OP op, xmlNodePtr old_node, xmlNodePtr new_node, struct nc_err** UNUSED(error)) {
xmlNodePtr tmp, node;
char* module_name = NULL, *module_enabled = NULL;
struct np_module* module = netopeer_options.modules;
node = (op & XMLDIFF_REM ? old_node : new_node);
if (node == NULL) {
return EXIT_FAILURE;
}
for (tmp = node->parent->children; tmp != NULL; tmp = tmp->next) {
if (xmlStrEqual(tmp->name, BAD_CAST "name")) {
module_name = get_node_content(tmp);
break;
}
}
module_enabled = get_node_content(node);
if (module_name == NULL || module_enabled == NULL) {
nc_verb_error("%s: missing module \"name\" or \"enabled\" node", __func__);
return EXIT_FAILURE;
}
if ((op & (XMLDIFF_REM | XMLDIFF_ADD)) && strcmp(module_enabled, "false") == 0) {
/* module is/was not enabled, nothing to enable/disable */
return EXIT_SUCCESS;
}
while (module) {
if (strcmp(module->name, module_name) == 0) {
break;
}
module = module->next;
}
if ((op & XMLDIFF_REM) || ((op & XMLDIFF_MOD) && strcmp(module_enabled, "false") == 0)) {
if (module == NULL) {
nc_verb_error("%s: internal error: module to disable not found", __func__);
return EXIT_FAILURE;
}
if (module_disable(module, 1)) {
return EXIT_FAILURE;
}
} else if ((op & XMLDIFF_ADD) || ((op & XMLDIFF_MOD) && strcmp(module_enabled, "true") == 0)) {
if (module != NULL) {
nc_verb_error("%s: internal error: module to enable already exists", __func__);
return EXIT_FAILURE;
}
module = calloc(1, sizeof(struct np_module));
module->name = strdup(module_name);
if (module_enable(module, 1)) {
return EXIT_FAILURE;
}
}
return EXIT_SUCCESS;
}
static int ntp_cmd(const char* cmd)
{
int status;
pid_t pid;
const char* service[] = {
NULL, /* UNKNOWN */
REDHAT_NTP_SERVICE, /* REDHAT */
SUSE_NTP_SERVICE, /* SUSE */
DEBIAN_NTP_SERVICE /* DEBIAN */
};
if (distribution_id == 0) {
identity_detect();
}
if (service[distribution_id] == NULL) {
nc_verb_error("Unable to start NTP service (unknown Linux distro).");
return EXIT_FAILURE;
}
if ((pid = vfork()) == -1) {
nc_verb_error("fork failed (%s).", strerror(errno));
return EXIT_FAILURE;
} else if (pid == 0) {
/* child */
int fd = open("/dev/null", O_RDONLY);
if (fd == -1) {
nc_verb_warning("Opening NULL dev failed (%s).", strerror(errno));
} else {
dup2(fd, STDIN_FILENO);
dup2(fd, STDOUT_FILENO);
dup2(fd, STDERR_FILENO);
close(fd);
}
execl("/sbin/service", "/sbin/service", service[distribution_id], cmd, (char*)NULL);
nc_verb_error("exec failed (%s).", strerror(errno));
return EXIT_FAILURE;
}
if (waitpid(pid, &status, 0) == -1) {
nc_verb_error("Failed to wait for the service child (%s).", strerror(errno));
return EXIT_FAILURE;
}
if (WEXITSTATUS(status) != 0) {
if (strcmp(cmd, "status")) {
nc_verb_error("Unable to %s NTP service (command returned %d).", cmd, WEXITSTATUS(status));
}
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
/* !DO NOT ALTER FUNCTION SIGNATURE! */
int callback_ofc_capable_switch_ofc_logical_switches (void ** data, XMLDIFF_OP op, xmlNodePtr node, struct nc_err** error)
{
nc_verb_verbose("%s: data=%p, op=%d\n", __PRETTY_FUNCTION__, data, op);
print_element_names(node, 0);
int rv = EXIT_SUCCESS;
if (NULL != node->children) {
assert(ofc_state.lsi_list);
assert(XMLDIFF_CHAIN & op);
if ((XMLDIFF_ADD|XMLDIFF_REM|XMLDIFF_MOD|XMLDIFF_CHAIN) & op) {
struct lsi *current_lsi;
while ( (current_lsi = list_next(ofc_state.lsi_list)) ) {
handle_ports(current_lsi->res.port_list_del);
}
while ( (current_lsi = list_pop_head(ofc_state.lsi_list)) ) {
handle_ports(current_lsi->res.port_list_add);
lsi_cleanup(current_lsi);
}
} else {
nc_verb_error("unsupported op");
assert(0);
}
list_delete(ofc_state.lsi_list);
ofc_state.lsi_list = NULL;
}
return rv;
}
/* !DO NOT ALTER FUNCTION SIGNATURE! */
int callback_ofc_capable_switch_ofc_logical_switches_ofc_switch_ofc_controllers_ofc_controller (void ** data, XMLDIFF_OP op, xmlNodePtr node, struct nc_err** error)
{
nc_verb_verbose("%s: data=%p, op=%d\n", __PRETTY_FUNCTION__, data, op);
print_element_names(node, 0);
if (NULL == *data) {
*data = calloc(1, sizeof(struct lsi));
assert(*data);
}
if ((XMLDIFF_ADD) & op) {
if (NULL == LSI(data)->controller_list_add) {
LSI(data)->controller_list_add = list_new();
assert(LSI(data)->controller_list_add);
}
list_append_data(LSI(data)->controller_list_add, __data);
__data = NULL;
} else if ((XMLDIFF_REM) & op) {
if (NULL == LSI(data)->controller_list_del) {
LSI(data)->controller_list_del = list_new();
assert(LSI(data)->controller_list_del);
}
list_append_data(LSI(data)->controller_list_del, __data);
__data = NULL;
} else {
nc_verb_error("not implemented");
assert(0);
}
return EXIT_SUCCESS;
}
/* !DO NOT ALTER FUNCTION SIGNATURE! */
int callback_n_netopeer_n_tls_n_server_cert(void** UNUSED(data), XMLDIFF_OP op, xmlNodePtr UNUSED(old_node), xmlNodePtr new_node, struct nc_err** error) {
char* content = NULL;
if (op & (XMLDIFF_MOD | XMLDIFF_ADD)) {
content = get_node_content(new_node);
if (content == NULL) {
*error = nc_err_new(NC_ERR_OP_FAILED);
nc_verb_error("%s: node content missing", __func__);
return EXIT_FAILURE;
}
}
/* TLS_CTX LOCK */
pthread_mutex_lock(&netopeer_options.tls_opts->tls_ctx_lock);
free(netopeer_options.tls_opts->server_cert);
netopeer_options.tls_opts->server_cert = NULL;
if (op & (XMLDIFF_MOD | XMLDIFF_ADD)) {
netopeer_options.tls_opts->server_cert = strdup(content);
}
netopeer_options.tls_opts->tls_ctx_change_flag = 1;
/* TLS_CTX UNLOCK */
pthread_mutex_unlock(&netopeer_options.tls_opts->tls_ctx_lock);
return EXIT_SUCCESS;
}
/* !DO NOT ALTER FUNCTION SIGNATURE! */
int callback_n_netopeer_n_max_sessions(void** UNUSED(data), XMLDIFF_OP op, xmlNodePtr UNUSED(old_node), xmlNodePtr new_node, struct nc_err** error) {
char* content = NULL, *ptr, *msg;
uint16_t num;
if (op & XMLDIFF_REM) {
netopeer_options.max_sessions = 8;
return EXIT_SUCCESS;
}
content = get_node_content(new_node);
if (content == NULL) {
*error = nc_err_new(NC_ERR_OP_FAILED);
nc_verb_error("%s: node content missing", __func__);
return EXIT_FAILURE;
}
num = strtol(content, &ptr, 10);
if (*ptr != '\0') {
asprintf(&msg, "Could not convert '%s' to a number.", content);
*error = nc_err_new(NC_ERR_BAD_ELEM);
nc_err_set(*error, NC_ERR_PARAM_MSG, msg);
nc_err_set(*error, NC_ERR_PARAM_INFO_BADELEM, "/netopeer/max-sessions");
free(msg);
return EXIT_FAILURE;
}
netopeer_options.max_sessions = num;
return EXIT_SUCCESS;
}
int
ofcds_rollback(void *UNUSED(data))
{
xmlChar *data;
int size, ret;
struct nc_err *e;
if (rollback.type == NC_DATASTORE_ERROR) {
nc_verb_error("No data to rollback");
return EXIT_FAILURE;
}
/* dump data for copy-config */
if (rollback.doc) {
xmlDocDumpMemory(rollback.doc, &data, &size);
} else {
data = xmlStrdup(BAD_CAST "");
}
rollbacking = 1;
ret = ofcds_copyconfig(NULL, rollback.type, NC_DATASTORE_CONFIG,
(char *) data, &e);
rollbacking = 0;
if (ret) {
nc_err_free(e);
}
xmlFree(data);
return ret;
}
int
ofcds_deleteconfig(void *UNUSED(data), NC_DATASTORE target,
struct nc_err **error)
{
switch (target) {
case NC_DATASTORE_RUNNING:
*error = nc_err_new(NC_ERR_OP_FAILED);
nc_err_set(*error, NC_ERR_PARAM_MSG,
"Cannot delete a running datastore.");
return EXIT_FAILURE;
case NC_DATASTORE_STARTUP:
store_rollback(gds_startup, NC_DATASTORE_STARTUP);
gds_startup = NULL;
break;
case NC_DATASTORE_CANDIDATE:
store_rollback(gds_cand, NC_DATASTORE_CANDIDATE);
gds_cand = NULL;
break;
default:
nc_verb_error("Invalid <delete-config> target.");
*error = nc_err_new(NC_ERR_BAD_ELEM);
nc_err_set(*error, NC_ERR_PARAM_INFO_BADELEM, "target");
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}
/* !DO NOT ALTER FUNCTION SIGNATURE! */
int callback_n_netopeer_n_ssh_n_auth_timeout(void** UNUSED(data), XMLDIFF_OP op, xmlNodePtr UNUSED(old_node), xmlNodePtr new_node, struct nc_err** error) {
char* content = NULL, *ptr, *msg;
uint16_t num;
if (op & XMLDIFF_REM) {
netopeer_options.ssh_opts->auth_timeout = 10;
return EXIT_SUCCESS;
}
content = get_node_content(new_node);
if (content == NULL) {
*error = nc_err_new(NC_ERR_OP_FAILED);
nc_verb_error("%s: node content missing", __func__);
return EXIT_FAILURE;
}
num = strtol(content, &ptr, 10);
if (*ptr != '\0') {
*error = nc_err_new(NC_ERR_OP_FAILED);
if (asprintf(&msg, "Could not convert '%s' to a number.", content) == 0) {
nc_err_set(*error, NC_ERR_PARAM_MSG, msg);
free(msg);
}
return EXIT_FAILURE;
}
netopeer_options.ssh_opts->auth_timeout = num;
return EXIT_SUCCESS;
}
int cmd_remove(const char* arg) {
char* ptr, *argv;
struct ncds_ds_list* ds;
struct model_list* model;
if (strlen(arg) < 7) {
cmd_remove_help();
return 1;
}
argv = strdupa(arg + strlen("remove "));
ptr = strtok(argv, " ");
ds = find_datastore(ptr);
if (ds == NULL) {
model = find_model(ptr);
if (model == NULL) {
nc_verb_error("No datastore or model \"%s\" found", ptr);
return 1;
} else {
ncds_ds_model_free(model->model);
}
} else {
ncds_free(ds->datastore);
}
remove_hint(ptr);
return 0;
}
/* !DO NOT ALTER FUNCTION SIGNATURE! */
int callback_n_netopeer_n_tls_n_crl_dir(void** UNUSED(data), XMLDIFF_OP op, xmlNodePtr UNUSED(old_node), xmlNodePtr new_node, struct nc_err** error) {
char* content = NULL;
if (op & (XMLDIFF_MOD | XMLDIFF_ADD)) {
content = get_node_content(new_node);
if (content == NULL) {
*error = nc_err_new(NC_ERR_OP_FAILED);
nc_verb_error("%s: node content missing", __func__);
return EXIT_FAILURE;
}
}
/* CRL_DIR LOCK */
pthread_mutex_lock(&netopeer_options.tls_opts->crl_dir_lock);
free(netopeer_options.tls_opts->crl_dir);
netopeer_options.tls_opts->crl_dir = NULL;
if (op & (XMLDIFF_MOD | XMLDIFF_ADD)) {
netopeer_options.tls_opts->crl_dir = strdup(content);
}
/* CRL_DIR UNLOCK */
pthread_mutex_unlock(&netopeer_options.tls_opts->crl_dir_lock);
return EXIT_SUCCESS;
}
/* !DO NOT ALTER FUNCTION SIGNATURE! */
int callback_n_netopeer_n_hello_timeout(void** UNUSED(data), XMLDIFF_OP op, xmlNodePtr UNUSED(old_node), xmlNodePtr new_node, struct nc_err** error) {
char* content = NULL, *ptr, *msg;
uint32_t num;
if (op & XMLDIFF_REM) {
/* set default value */
nc_hello_timeout(600 * 1000);
return EXIT_SUCCESS;
}
content = get_node_content(new_node);
if (content == NULL) {
*error = nc_err_new(NC_ERR_OP_FAILED);
nc_verb_error("%s: node content missing", __func__);
return EXIT_FAILURE;
}
num = strtol(content, &ptr, 10);
if (*ptr != '\0') {
*error = nc_err_new(NC_ERR_BAD_ELEM);
if (asprintf(&msg, "Could not convert '%s' to a number.", content) == 0) {
nc_err_set(*error, NC_ERR_PARAM_MSG, msg);
nc_err_set(*error, NC_ERR_PARAM_INFO_BADELEM, "/netopeer/hello-timeout");
free(msg);
}
return EXIT_FAILURE;
}
nc_hello_timeout(num * 1000);
return EXIT_SUCCESS;
}
/* !DO NOT ALTER FUNCTION SIGNATURE! */
int callback_n_netopeer_n_tls_n_trusted_ca_certs_n_trusted_ca_cert(void** UNUSED(data), XMLDIFF_OP op, xmlNodePtr old_node, xmlNodePtr new_node, struct nc_err** error) {
char* content = NULL;
if (op & (XMLDIFF_REM | XMLDIFF_MOD)) {
content = get_node_content(old_node);
if (content == NULL) {
*error = nc_err_new(NC_ERR_OP_FAILED);
nc_verb_error("%s: node content missing", __func__);
return EXIT_FAILURE;
}
/* TLS_CTX LOCK */
pthread_mutex_lock(&netopeer_options.tls_opts->tls_ctx_lock);
if (del_trusted_cert(&netopeer_options.tls_opts->trusted_certs, content, 0) != 0) {
nc_verb_error("%s: inconsistent state (%s:%d)", __func__, __FILE__, __LINE__);
} else {
netopeer_options.tls_opts->tls_ctx_change_flag = 1;
}
/* TLS_CTX UNLOCK */
pthread_mutex_unlock(&netopeer_options.tls_opts->tls_ctx_lock);
}
if (op & (XMLDIFF_MOD | XMLDIFF_ADD)) {
content = get_node_content(new_node);
if (content == NULL) {
*error = nc_err_new(NC_ERR_OP_FAILED);
nc_verb_error("%s: node content missing", __func__);
return EXIT_FAILURE;
}
/* TLS_CTX LOCK */
pthread_mutex_lock(&netopeer_options.tls_opts->tls_ctx_lock);
add_trusted_cert(&netopeer_options.tls_opts->trusted_certs, content, 0);
netopeer_options.tls_opts->tls_ctx_change_flag = 1;
/* TLS_CTX UNLOCK */
pthread_mutex_unlock(&netopeer_options.tls_opts->tls_ctx_lock);
}
return EXIT_SUCCESS;
}
/* always returns only a single new connection */
static struct client_struct* sock_accept(const struct np_sock* npsock) {
int r;
unsigned int i;
socklen_t client_saddr_len;
struct client_struct* ret;
if (npsock == NULL) {
return NULL;
}
/* poll for a new connection */
errno = 0;
r = poll(npsock->pollsock, npsock->count, netopeer_options.response_time);
if (r == 0 || (r == -1 && errno == EINTR)) {
/* we either timeouted or going to exit or restart */
return NULL;
}
if (r == -1) {
nc_verb_error("%s: poll failed (%s)", __func__, strerror(errno));
return NULL;
}
ret = calloc(1, sizeof(struct client_struct));
client_saddr_len = sizeof(struct sockaddr_storage);
/* accept the first polled connection */
for (i = 0; i < npsock->count; ++i) {
if (npsock->pollsock[i].revents & POLLIN) {
ret->sock = accept(npsock->pollsock[i].fd, (struct sockaddr*)&ret->saddr, &client_saddr_len);
if (ret->sock == -1) {
nc_verb_error("%s: accept failed (%s)", __func__, strerror(errno));
free(ret);
return NULL;
}
ret->transport = npsock->transport[i];
npsock->pollsock[i].revents = 0;
break;
}
}
return ret;
}
int cmd_print(const char* arg) {
char* ptr, *argv;
xmlDocPtr doc;
struct ncds_ds_list* ds;
struct model_list* model;
argv = strdupa(arg);
strtok(argv, " ");
ptr = strtok(NULL, " ");
if (ptr == NULL) {
ds = ncds.datastores;
model = models_list;
printf("Datastores:\n");
if (ds == NULL) {
printf("\tnone\n");
}
for (; ds != NULL; ds = ds->next) {
printf("\t%s\n", ds->datastore->data_model->name);
}
printf("Models:\n");
if (model == NULL) {
printf("\tnone\n");
}
for (; model != NULL; model = model->next) {
printf("\t%s\n", model->model->name);
}
} else {
char* buf = NULL;
int buf_len = 0;
ds = find_datastore(ptr);
if (ds == NULL) {
model = find_model(ptr);
if (model == NULL) {
nc_verb_error("No datastore or model \"%s\" found", ptr);
return 1;
} else {
doc = model->model->xml;
}
} else {
doc = ds->datastore->ext_model;
}
xmlDocDumpFormatMemory(doc, (xmlChar**)&buf, &buf_len, 1);
fwrite(buf, 1, buf_len, stdout);
free(buf);
}
return 0;
}
void* data_thread(void* UNUSED(arg)) {
struct client_struct* client;
int skip_sleep, to_send_size;
char* to_send;
to_send_size = BASE_READ_BUFFER_SIZE;
to_send = malloc(to_send_size);
do {
skip_sleep = 0;
/* GLOBAL READ LOCK */
pthread_rwlock_rdlock(&netopeer_state.global_lock);
/* go through all the clients */
for (client = netopeer_state.clients; client != NULL; client = client->next) {
switch (client->transport) {
#ifdef NP_SSH
case NC_TRANSPORT_SSH:
skip_sleep = np_ssh_client_data((struct client_struct_ssh*)client, &to_send, &to_send_size);
break;
#endif
#ifdef NP_TLS
case NC_TRANSPORT_TLS:
skip_sleep = np_tls_client_data((struct client_struct_tls*)client, &to_send, &to_send_size);
break;
#endif
default:
nc_verb_error("%s: internal error (%s:%d)", __func__, __FILE__, __LINE__);
}
/* we removed a client, maybe the last so quit the loop */
if (skip_sleep == 2) {
break;
}
}
/* GLOBAL READ UNLOCK */
pthread_rwlock_unlock(&netopeer_state.global_lock);
if (!skip_sleep) {
/* we did not do anything productive, so let the thread sleep */
usleep(netopeer_options.response_time*1000);
}
} while (!quit || netopeer_state.clients != NULL);
free(to_send);
#ifdef NP_TLS
np_tls_thread_cleanup();
#endif
return NULL;
}
void np_client_remove(struct client_struct** root, struct client_struct* del_client) {
struct client_struct* client, *prev_client = NULL;
for (client = *root; client != NULL; client = client->next) {
if (client == del_client) {
break;
}
prev_client = client;
}
if (client == NULL) {
nc_verb_error("%s: internal error: client not found (%s:%d)", __func__, __FILE__, __LINE__);
return;
}
if (prev_client == NULL) {
*root = (*root)->next;
} else {
prev_client->next = client->next;
}
switch (client->transport) {
#ifdef NP_SSH
case NC_TRANSPORT_SSH:
client_free_ssh((struct client_struct_ssh*)client);
break;
#endif
#ifdef NP_TLS
case NC_TRANSPORT_TLS:
client_free_tls((struct client_struct_tls*)client);
break;
#endif
default:
nc_verb_error("%s: internal error (%s:%d)", __func__, __FILE__, __LINE__);
}
free(client);
}
/* !DO NOT ALTER FUNCTION SIGNATURE! */
int callback_ofc_capable_switch_ofc_resources_ofc_port_ofc_configuration_ofc_admin_state (void ** data, XMLDIFF_OP op, xmlNodePtr node, struct nc_err** error)
{
nc_verb_verbose("%s: data=%p, op=%d\n", __PRETTY_FUNCTION__, data, op);
print_element_names(node, 0);
int rv = EXIT_SUCCESS;
int down = 0; // default is up
if ((XMLDIFF_ADD|XMLDIFF_MOD) & op) {
if (xmlStrEqual(XML_GET_CONTENT(node->children), BAD_CAST "down")) {
down = 1;
}
// sanity check... if the content is not "down", it has to be "up"
assert(down || xmlStrEqual(XML_GET_CONTENT(node->children), BAD_CAST "up"));
// currently the resource-id is the port name (even if the name is not set
xmlNodePtr tmp = find_element(BAD_CAST "resource-id", node->parent->parent->children);
assert(tmp);
if (down) {
// set interface down
nc_verb_verbose("set interface %s down\n", tmp->children->content);
if (port_disable(ofc_state.xmp_client_handle, tmp->children->content)) {
rv = EXIT_FAILURE;
}
} else {
// set interface up
nc_verb_verbose("set interface %s up\n", tmp->children->content);
if (port_enable(ofc_state.xmp_client_handle, tmp->children->content)) {
rv = EXIT_FAILURE;
}
}
} else if (XMLDIFF_REM & op) {
// setting interface up
} else {
nc_verb_error("unsupported op");
assert(0);
}
return rv;
}
/* !DO NOT ALTER FUNCTION SIGNATURE! */
int callback_ofc_capable_switch_ofc_logical_switches_ofc_switch_ofc_controllers_ofc_controller_ofc_ip_address (void ** data, XMLDIFF_OP op, xmlNodePtr node, struct nc_err** error)
{
nc_verb_verbose("%s: data=%p, op=%d\n", __PRETTY_FUNCTION__, data, op);
assert(__data);
if ((XMLDIFF_ADD) & op) {
// fixme handle zone in address (see http://www.netconfcentral.org/modules/ietf-inet-types)
CONTROLLER(__data)->ip_domain = parse_ip_address(XML_GET_CONTENT(node->children), &CONTROLLER(__data)->ip);
} else if ((XMLDIFF_REM) & op) {
} else {
nc_verb_error("not implemented");
assert(0);
}
return EXIT_SUCCESS;
}
/* !DO NOT ALTER FUNCTION SIGNATURE! */
int callback_ofc_capable_switch_ofc_logical_switches_ofc_switch_ofc_controllers_ofc_controller_ofc_port (void ** data, XMLDIFF_OP op, xmlNodePtr node, struct nc_err** error)
{
nc_verb_verbose("%s: data=%p, op=%d\n", __PRETTY_FUNCTION__, data, op);
assert(__data);
if ((XMLDIFF_ADD) & op) {
CONTROLLER(__data)->port = strtoul(XML_GET_CONTENT(node->children), NULL, 10);
} else if ((XMLDIFF_REM) & op) {
} else {
nc_verb_error("not implemented");
assert(0);
}
return EXIT_SUCCESS;
}
int cmd_verb(const char* arg) {
const char* verb;
verb = arg + 5;
if (strcmp(verb, "error") == 0) {
nc_verbosity(NC_VERB_ERROR);
} else if (strcmp(verb, "warning") == 0) {
nc_verbosity(NC_VERB_WARNING);
} else if (strcmp(verb, "verbose") == 0) {
nc_verbosity(NC_VERB_VERBOSE);
} else if (strcmp(verb, "debug") == 0) {
nc_verbosity(NC_VERB_DEBUG);
} else {
nc_verb_error("Unknown verbosity \"%s\"", verb);
return 1;
}
return 0;
}
/* !DO NOT ALTER FUNCTION SIGNATURE! */
int callback_ofc_capable_switch_ofc_logical_switches_ofc_switch_ofc_controllers_ofc_controller_ofc_id (void ** data, XMLDIFF_OP op, xmlNodePtr node, struct nc_err** error)
{
nc_verb_verbose("%s: data=%p, op=%d\n", __PRETTY_FUNCTION__, data, op);
assert(NULL == __data);
if ((XMLDIFF_ADD|XMLDIFF_REM) & op) {
__data = calloc(1, sizeof(struct controller));
CONTROLLER(__data)->id = strdup(XML_GET_CONTENT(node->children));
assert(CONTROLLER(__data)->id);
} else {
nc_verb_error("not implemented");
assert(0);
}
return EXIT_SUCCESS;
}
void np_client_detach(struct client_struct** root, struct client_struct* del_client) {
struct client_struct* client, *prev_client = NULL;
for (client = *root; client != NULL; client = client->next) {
if (client == del_client) {
break;
}
prev_client = client;
}
if (client == NULL) {
nc_verb_error("%s: internal error: client not found (%s:%d)", __func__, __FILE__, __LINE__);
return;
}
if (prev_client == NULL) {
*root = (*root)->next;
} else {
prev_client->next = client->next;
}
}
/* !DO NOT ALTER FUNCTION SIGNATURE! */
int callback_n_netopeer_n_ssh_n_server_keys_n_dsa_key(void** UNUSED(data), XMLDIFF_OP op, xmlNodePtr UNUSED(old_node), xmlNodePtr new_node, struct nc_err** error) {
char* content = NULL;
if (op & XMLDIFF_REM) {
free(netopeer_options.ssh_opts->dsa_key);
netopeer_options.ssh_opts->dsa_key = NULL;
netopeer_options.ssh_opts->server_key_change_flag = 1;
return EXIT_SUCCESS;
}
content = get_node_content(new_node);
if (content == NULL) {
*error = nc_err_new(NC_ERR_OP_FAILED);
nc_verb_error("%s: node content missing", __func__);
return EXIT_FAILURE;
}
free(netopeer_options.ssh_opts->dsa_key);
netopeer_options.ssh_opts->dsa_key = strdup(content);
netopeer_options.ssh_opts->server_key_change_flag = 1;
return EXIT_SUCCESS;
}
void* netconf_rpc_thread(void* UNUSED(arg)) {
struct client_struct* client;
do {
/* GLOBAL READ LOCK */
pthread_rwlock_rdlock(&netopeer_state.global_lock);
for (client = netopeer_state.clients; client != NULL; client = client->next) {
if (client->to_free) {
continue;
}
switch (client->transport) {
#ifdef NP_SSH
case NC_TRANSPORT_SSH:
np_ssh_client_netconf_rpc((struct client_struct_ssh*)client);
break;
#endif
#ifdef NP_TLS
case NC_TRANSPORT_TLS:
np_tls_client_netconf_rpc((struct client_struct_tls*)client);
break;
#endif
default:
nc_verb_error("%s: internal error (%s:%d)", __func__, __FILE__, __LINE__);
}
}
/* GLOBAL READ UNLOCK */
pthread_rwlock_unlock(&netopeer_state.global_lock);
usleep(netopeer_options.response_time*1000);
} while (!quit);
#ifdef NP_TLS
np_tls_thread_cleanup();
#endif
return NULL;
}
/* !DO NOT ALTER FUNCTION SIGNATURE! */
int callback_n_netopeer_n_ssh_n_password_auth_enabled(void** UNUSED(data), XMLDIFF_OP op, xmlNodePtr UNUSED(old_node), xmlNodePtr new_node, struct nc_err** error) {
char* content = NULL;
if (op & XMLDIFF_REM) {
netopeer_options.ssh_opts->password_auth_enabled = 1;
return EXIT_SUCCESS;
}
content = get_node_content(new_node);
if (content == NULL) {
*error = nc_err_new(NC_ERR_OP_FAILED);
nc_verb_error("%s: node content missing", __func__);
return EXIT_FAILURE;
}
if (strcmp(content, "false") == 0) {
netopeer_options.ssh_opts->password_auth_enabled = 0;
} else {
netopeer_options.ssh_opts->password_auth_enabled = 1;
}
return EXIT_SUCCESS;
}
/* !DO NOT ALTER FUNCTION SIGNATURE! */
int callback_ofc_capable_switch_ofc_logical_switches_ofc_switch_ofc_datapath_id (void ** data, XMLDIFF_OP op, xmlNodePtr node, struct nc_err** error)
{
nc_verb_verbose("%s: data=%p, op=%d\n", __PRETTY_FUNCTION__, data, op);
assert(NULL == __data);
if (NULL == *data) {
*data = calloc(1, sizeof(struct lsi));
assert(*data);
}
if ((XMLDIFF_ADD|XMLDIFF_REM) & op) {
xmlChar* text = xmlNodeListGetString(node->doc, node->children, 1);
uint64_t dpid = parse_dpid(text);
xmlFree(text);
LSI(data)->dpid = dpid;
} else {
// todo add operation to modify dpid
nc_verb_error("not implemented");
assert(0);
}
return EXIT_SUCCESS;
}
int main (int argc, char** argv)
{
conn_t* conn = NULL;
struct sigaction action;
sigset_t block_mask;
char *aux_string = NULL, path[PATH_MAX];
int next_option, ret;
int daemonize = 0, len;
int verbose = 0;
struct module * netopeer_module = NULL, *server_module = NULL;
/* initialize message system and set verbose and debug variables */
if ((aux_string = getenv (ENVIRONMENT_VERBOSE)) == NULL) {
verbose = NC_VERB_ERROR;
} else {
verbose = atoi (aux_string);
}
aux_string = NULL; /* for sure to avoid unwanted changes in environment */
/* parse given options */
while ((next_option = getopt (argc, argv, OPTSTRING)) != -1) {
switch (next_option) {
case 'd':
daemonize = 1;
break;
case 'h':
print_usage (argv[0]);
break;
case 'v':
verbose = atoi (optarg);
break;
case 'V':
print_version (argv[0]);
break;
default:
print_usage (argv[0]);
break;
}
}
/* set signal handler */
sigfillset (&block_mask);
action.sa_handler = signal_handler;
action.sa_mask = block_mask;
action.sa_flags = 0;
sigaction (SIGINT, &action, NULL);
sigaction (SIGQUIT, &action, NULL);
sigaction (SIGABRT, &action, NULL);
sigaction (SIGTERM, &action, NULL);
sigaction (SIGKILL, &action, NULL);
sigaction (SIGHUP, &action, NULL);
nc_callback_print (clb_print);
/* normalize value if not from the enum */
if (verbose < NC_VERB_ERROR) {
nc_verbosity (NC_VERB_ERROR);
} else if (verbose > NC_VERB_DEBUG) {
nc_verbosity (NC_VERB_DEBUG);
} else {
nc_verbosity (verbose);
}
/* go to the background as a daemon */
if (daemonize == 1) {
if (daemon(0, 0) != 0) {
nc_verb_error("Going to background failed (%s)", strerror(errno));
return (EXIT_FAILURE);
}
openlog("netopeer-server", LOG_PID, LOG_DAEMON);
} else {
openlog("netopeer-server", LOG_PID|LOG_PERROR, LOG_DAEMON);
}
/* make sure we were executed by root */
if (geteuid() != 0) {
nc_verb_error("Failed to start, must have root privileges.");
return (EXIT_FAILURE);
}
/*
* this initialize the library and check potential ABI mismatches
* between the version it was compiled for and the actual shared
* library used.
*/
LIBXML_TEST_VERSION
/* initialize library including internal datastores and maybee something more */
if ((ret = nc_init (NC_INIT_ALL | NC_INIT_MULTILAYER)) < 0) {
nc_verb_error("Library initialization failed.");
return (EXIT_FAILURE);
}
/* Initiate communication subsystem for communicate with agents */
conn = comm_init(ret & NC_INITRET_RECOVERY);
if (conn == NULL) {
nc_verb_error("Communication subsystem not initiated.");
return (EXIT_FAILURE);
}
server_start = 1;
restart:
/* start NETCONF server module */
if ((server_module = calloc(1, sizeof(struct module))) == NULL) {
nc_verb_error("Creating necessary NETCONF server plugin failed!");
comm_destroy(conn);
return(EXIT_FAILURE);
}
server_module->name = strdup(NCSERVER_MODULE_NAME);
if (module_enable(server_module, 0)) {
nc_verb_error("Starting necessary NETCONF server plugin failed!");
free(server_module->name);
free(server_module);
comm_destroy(conn);
return EXIT_FAILURE;
}
/* start netopeer device module - it will start all modules that are
* in its configuration and in server configuration */
if ((netopeer_module = calloc(1, sizeof(struct module))) == NULL) {
nc_verb_error("Creating necessary Netopeer plugin failed!");
module_disable(server_module, 1);
comm_destroy(conn);
return(EXIT_FAILURE);
}
netopeer_module->name = strdup(NETOPEER_MODULE_NAME);
if (module_enable(netopeer_module, 0)) {
nc_verb_error("Starting necessary Netopeer plugin failed!");
module_disable(server_module, 1);
free(netopeer_module->name);
free(netopeer_module);
comm_destroy(conn);
return EXIT_FAILURE;
}
server_start = 0;
nc_verb_verbose("Netopeer server successfully initialized.");
while (!done) {
comm_loop(conn, 500);
}
/* unload Netopeer module -> unload all modules */
module_disable(server_module, 1);
module_disable(netopeer_module, 1);
/* main cleanup */
if (!restart_soft) {
/* close connection and destroy all sessions only when shutting down or hard restarting the server */
comm_destroy(conn);
server_sessions_destroy_all ();
nc_close ();
}
/*
*Free the global variables that may
*have been allocated by the parser.
*/
xmlCleanupParser ();
if (restart_soft) {
nc_verb_verbose("Server is going to soft restart.");
restart_soft = 0;
done = 0;
goto restart;
} else if (restart_hard) {
nc_verb_verbose("Server is going to hard restart.");
len = readlink("/proc/self/exe", path, PATH_MAX);
path[len] = 0;
execv(path, argv);
}
return (EXIT_SUCCESS);
}
char *
ofcds_getconfig(void *UNUSED(data), NC_DATASTORE target, struct nc_err **error)
{
xmlChar *config_data = NULL;
switch (target) {
case NC_DATASTORE_RUNNING:
/* If there is no id of the capable-switch (no configuration data were
* provided), continue as there is no OVSDB */
return ofc_get_config_data();
case NC_DATASTORE_STARTUP:
if (!gds_startup) {
config_data = xmlStrdup(BAD_CAST "");
} else {
xmlDocDumpMemory(gds_startup, &config_data, NULL);
}
break;
case NC_DATASTORE_CANDIDATE:
if (!gds_cand) {
config_data = xmlStrdup(BAD_CAST "");
} else {
xmlDocDumpMemory(gds_cand, &config_data, NULL);
}
break;
default:
nc_verb_error("Invalid <get-config> source.");
*error = nc_err_new(NC_ERR_BAD_ELEM);
nc_err_set(*error, NC_ERR_PARAM_INFO_BADELEM, "source");
}
return (char *) config_data;
}