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/*
common functions for various routers (fastrouter, http...)
*/
#include <uwsgi.h>
extern struct uwsgi_server uwsgi;
#include "cr.h"
void uwsgi_corerouter_setup_sockets(struct uwsgi_corerouter *ucr) {
struct uwsgi_gateway_socket *ugs = uwsgi.gateway_sockets;
while (ugs) {
if (!strcmp(ucr->name, ugs->owner)) {
if (!ugs->subscription) {
if (ugs->name[0] == '=') {
int shared_socket = atoi(ugs->name + 1);
if (shared_socket >= 0) {
ugs->fd = uwsgi_get_shared_socket_fd_by_num(shared_socket);
ugs->shared = 1;
if (ugs->fd == -1) {
uwsgi_log("unable to use shared socket %d\n", shared_socket);
exit(1);
}
ugs->name = uwsgi_getsockname(ugs->fd);
}
}
else if (!uwsgi_startswith("fd://", ugs->name, 5)) {
int fd_socket = atoi(ugs->name + 5);
if (fd_socket >= 0) {
ugs->fd = fd_socket;
ugs->name = uwsgi_getsockname(ugs->fd);
if (!ugs->name) {
uwsgi_log("unable to use file descriptor %d as socket\n", fd_socket);
exit(1);
}
}
}
else {
ugs->port = strrchr(ugs->name, ':');
int current_defer_accept = uwsgi.no_defer_accept;
if (ugs->no_defer) {
uwsgi.no_defer_accept = 1;
}
if (ugs->fd == -1) {
if (ugs->port) {
ugs->fd = bind_to_tcp(ugs->name, uwsgi.listen_queue, ugs->port);
ugs->port++;
ugs->port_len = strlen(ugs->port);
}
else {
ugs->fd = bind_to_unix(ugs->name, uwsgi.listen_queue, uwsgi.chmod_socket, uwsgi.abstract_socket);
}
}
if (ugs->no_defer) {
uwsgi.no_defer_accept = current_defer_accept;
}
}
// fix SERVER_PORT
if (!ugs->port || !ugs->port_len) {
ugs->port = strrchr(ugs->name, ':');
if (ugs->port) {
ugs->port++;
ugs->port_len = strlen(ugs->port);
}
}
// put socket in non-blocking mode
uwsgi_socket_nb(ugs->fd);
uwsgi_log("%s bound on %s fd %d\n", ucr->name, ugs->name, ugs->fd);
}
else if (ugs->subscription) {
if (ugs->fd == -1) {
if (strchr(ugs->name, ':')) {
ugs->fd = bind_to_udp(ugs->name, 0, 0);
}
else {
ugs->fd = bind_to_unix_dgram(ugs->name);
if (ugs->fd < 1 || (uwsgi.subscriptions_use_credentials && uwsgi_socket_passcred(ugs->fd))) {
exit(1);
}
}
uwsgi_socket_nb(ugs->fd);
}
uwsgi_log("%s subscription server bound on %s fd %d\n", ucr->name, ugs->name, ugs->fd);
}
}
ugs = ugs->next;
}
}
void *uwsgi_corerouter_setup_event_queue(struct uwsgi_corerouter *ucr, int id) {
ucr->queue = event_queue_init();
struct uwsgi_gateway_socket *ugs = uwsgi.gateway_sockets;
while (ugs) {
if (!strcmp(ucr->name, ugs->owner)) {
if (!ucr->cheap || ugs->subscription) {
event_queue_add_fd_read(ucr->queue, ugs->fd);
}
ugs->gateway = &ushared->gateways[id];
}
ugs = ugs->next;
}
return event_queue_alloc(ucr->nevents);
}
void uwsgi_corerouter_manage_subscription(struct uwsgi_corerouter *ucr, int id, struct uwsgi_gateway_socket *ugs) {
int i;
struct uwsgi_subscribe_req usr;
char bbuf[4096];
ssize_t len = -1;
memset(&usr, 0, sizeof(struct uwsgi_subscribe_req));
if (uwsgi.subscriptions_use_credentials) {
len = uwsgi_recv_cred2(ugs->fd, bbuf, 4096, &usr.pid, &usr.uid, &usr.gid);
}
else {
len = recv(ugs->fd, bbuf, 4096, 0);
}
if (len > 0) {
uwsgi_hooked_parse(bbuf + 4, len - 4, corerouter_manage_subscription, &usr);
if (usr.sign_len > 0) {
// calc the base size
usr.base = bbuf + 4;
usr.base_len = len - 4 - (2 + 4 + 2 + usr.sign_len);
}
// subscribe request ?
if (bbuf[3] == 0) {
if (uwsgi_add_subscribe_node(ucr->subscriptions, &usr) && ucr->i_am_cheap) {
struct uwsgi_gateway_socket *ugs = uwsgi.gateway_sockets;
while (ugs) {
if (!strcmp(ugs->owner, ucr->name) && !ugs->subscription) {
event_queue_add_fd_read(ucr->queue, ugs->fd);
}
ugs = ugs->next;
}
ucr->i_am_cheap = 0;
uwsgi_log("[%s pid %d] leaving cheap mode...\n", ucr->name, (int) uwsgi.mypid);
}
}
//unsubscribe
else {
struct uwsgi_subscribe_node *node = uwsgi_get_subscribe_node_by_name(ucr->subscriptions, usr.key, usr.keylen, usr.address, usr.address_len);
if (node && node->len) {
#ifdef UWSGI_SSL
if (uwsgi.subscriptions_sign_check_dir) {
if (!uwsgi_subscription_sign_check(node->slot, &usr)) {
return;
}
}
#endif
if (node->death_mark == 0)
uwsgi_log("[%s pid %d] %.*s => marking %.*s as failed\n", ucr->name, (int) uwsgi.mypid, (int) usr.keylen, usr.key, (int) usr.address_len, usr.address);
node->failcnt++;
node->death_mark = 1;
// check if i can remove the node
if (node->reference == 0) {
uwsgi_remove_subscribe_node(ucr->subscriptions, node);
}
if (ucr->cheap && !ucr->i_am_cheap && uwsgi_no_subscriptions(ucr->subscriptions)) {
uwsgi_gateway_go_cheap(ucr->name, ucr->queue, &ucr->i_am_cheap);
}
}
}
// propagate the subscription to other nodes
for (i = 0; i < ushared->gateways_cnt; i++) {
if (i == id)
continue;
if (!strcmp(ushared->gateways[i].name, ucr->name)) {
if (send(ushared->gateways[i].internal_subscription_pipe[0], bbuf, len, 0) != len) {
uwsgi_error("uwsgi_corerouter_manage_subscription()/send()");
}
}
}
// resubscribe if needed ?
if (ucr->resubscribe) {
static char *address = NULL;
if (!address) {
struct uwsgi_gateway_socket *augs = uwsgi.gateway_sockets;
while (augs) {
if (!strcmp(ucr->name, augs->owner)) {
if (!augs->subscription) {
address = augs->name;
break;
}
}
augs = augs->next;
}
}
struct uwsgi_string_list *usl = NULL;
char *sni_key = NULL;
char *sni_cert = NULL;
char *sni_ca = NULL;
if (usr.sni_key_len) {
sni_key = uwsgi_concat2n(usr.sni_key, usr.sni_key_len, "", 0);
}
if (usr.sni_crt_len) {
sni_cert = uwsgi_concat2n(usr.sni_crt, usr.sni_crt_len, "", 0);
}
if (usr.sni_ca_len) {
sni_ca = uwsgi_concat2n(usr.sni_ca, usr.sni_ca_len, "", 0);
}
uwsgi_foreach(usl, ucr->resubscribe) {
if (ucr->resubscribe_bind) {
static int rfd = -1;
if (rfd == -1) {
rfd = bind_to_udp(ucr->resubscribe_bind, 0, 0);
}
uwsgi_send_subscription_from_fd(rfd, usl->value, usr.key, usr.keylen, usr.modifier1, usr.modifier2, bbuf[3], address, NULL, sni_key, sni_cert, sni_ca);
}
else {
uwsgi_send_subscription_from_fd(-2, usl->value, usr.key, usr.keylen, usr.modifier1, usr.modifier2, bbuf[3], address, NULL, sni_key, sni_cert, sni_ca);
}
}
if (sni_key) free(sni_key);
if (sni_cert) free(sni_cert);
if (sni_ca) free(sni_ca);
}
}
}
void uwsgi_corerouter_manage_internal_subscription(struct uwsgi_corerouter *ucr, int fd) {
struct uwsgi_subscribe_req usr;
char bbuf[4096];
ssize_t len = recv(fd, bbuf, 4096, 0);
if (len > 0) {
memset(&usr, 0, sizeof(struct uwsgi_subscribe_req));
uwsgi_hooked_parse(bbuf + 4, len - 4, corerouter_manage_subscription, &usr);
// subscribe request ?
if (bbuf[3] == 0) {
if (uwsgi_add_subscribe_node(ucr->subscriptions, &usr) && ucr->i_am_cheap) {
struct uwsgi_gateway_socket *ugs = uwsgi.gateway_sockets;
while (ugs) {
if (!strcmp(ugs->owner, ucr->name) && !ugs->subscription) {
event_queue_add_fd_read(ucr->queue, ugs->fd);
}
ugs = ugs->next;
}
ucr->i_am_cheap = 0;
uwsgi_log("[%s pid %d] leaving cheap mode...\n", ucr->name, (int) uwsgi.mypid);
}
}
//unsubscribe
else {
struct uwsgi_subscribe_node *node = uwsgi_get_subscribe_node_by_name(ucr->subscriptions, usr.key, usr.keylen, usr.address, usr.address_len);
if (node && node->len) {
if (node->death_mark == 0)
uwsgi_log("[%s pid %d] %.*s => marking %.*s as failed\n", ucr->name, (int) uwsgi.mypid, (int) usr.keylen, usr.key, (int) usr.address_len, usr.address);
node->failcnt++;
node->death_mark = 1;
// check if i can remove the node
if (node->reference == 0) {
uwsgi_remove_subscribe_node(ucr->subscriptions, node);
}
if (ucr->cheap && !ucr->i_am_cheap && uwsgi_no_subscriptions(ucr->subscriptions)) {
uwsgi_gateway_go_cheap(ucr->name, ucr->queue, &ucr->i_am_cheap);
}
}
}
}
}
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