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#include "includes.h"
#include "listener.h"
#include "session.h"
#include "dbutil.h"
void listeners_initialise() {
/* just one slot to start with */
ses.listeners = (struct Listener**)m_malloc(sizeof(struct Listener*));
ses.listensize = 1;
ses.listeners[0] = NULL;
}
void set_listener_fds(fd_set * readfds) {
unsigned int i, j;
struct Listener *listener;
/* check each in turn */
for (i = 0; i < ses.listensize; i++) {
listener = ses.listeners[i];
if (listener != NULL) {
for (j = 0; j < listener->nsocks; j++) {
FD_SET(listener->socks[j], readfds);
}
}
}
}
void handle_listeners(fd_set * readfds) {
unsigned int i, j;
struct Listener *listener;
int sock;
/* check each in turn */
for (i = 0; i < ses.listensize; i++) {
listener = ses.listeners[i];
if (listener != NULL) {
for (j = 0; j < listener->nsocks; j++) {
sock = listener->socks[j];
if (FD_ISSET(sock, readfds)) {
listener->accepter(listener, sock);
}
}
}
}
}
/* accepter(int fd, void* typedata) is a function to accept connections,
* cleanup(void* typedata) happens when cleaning up */
struct Listener* new_listener(int socks[], unsigned int nsocks,
int type, void* typedata,
void (*accepter)(struct Listener*, int sock),
void (*cleanup)(struct Listener*)) {
unsigned int i, j;
struct Listener *newlisten = NULL;
/* try get a new structure to hold it */
for (i = 0; i < ses.listensize; i++) {
if (ses.listeners[i] == NULL) {
break;
}
}
/* or create a new one */
if (i == ses.listensize) {
if (ses.listensize > MAX_LISTENERS) {
TRACE(("leave newlistener: too many already"));
for (j = 0; j < nsocks; j++) {
close(socks[i]);
}
return NULL;
}
ses.listeners = (struct Listener**)m_realloc(ses.listeners,
(ses.listensize+LISTENER_EXTEND_SIZE)
*sizeof(struct Listener*));
ses.listensize += LISTENER_EXTEND_SIZE;
for (j = i; j < ses.listensize; j++) {
ses.listeners[j] = NULL;
}
}
for (j = 0; j < nsocks; j++) {
ses.maxfd = MAX(ses.maxfd, socks[j]);
}
TRACE(("new listener num %d ", i));
newlisten = (struct Listener*)m_malloc(sizeof(struct Listener));
newlisten->index = i;
newlisten->type = type;
newlisten->typedata = typedata;
newlisten->nsocks = nsocks;
memcpy(newlisten->socks, socks, nsocks * sizeof(int));
newlisten->accepter = accepter;
newlisten->cleanup = cleanup;
ses.listeners[i] = newlisten;
return newlisten;
}
/* Return the first listener which matches the type-specific comparison
* function. Particularly needed for global requests, like tcp */
struct Listener * get_listener(int type, void* typedata,
int (*match)(void*, void*)) {
unsigned int i;
struct Listener* listener;
for (i = 0, listener = ses.listeners[i]; i < ses.listensize; i++) {
if (listener->type == type
&& match(typedata, listener->typedata)) {
return listener;
}
}
return NULL;
}
void remove_listener(struct Listener* listener) {
unsigned int j;
if (listener->cleanup) {
listener->cleanup(listener);
}
for (j = 0; j < listener->nsocks; j++) {
close(listener->socks[j]);
}
ses.listeners[listener->index] = NULL;
m_free(listener);
}
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