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#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>
#include <errno.h>
#include <string.h>
#include <fcntl.h>
#include <time.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include "triton.h"
#include "log.h"
#include "list.h"
#include "memdebug.h"
#define RECV_BUF_SIZE 4096
#define BANNER "accel-pptp-1.3-rc1\r\n"
struct client_t
{
struct list_head entry;
struct triton_md_handler_t hnd;
char *recv_buf;
int recv_pos;
struct list_head xmit_queue;
int auth:1;
};
static struct triton_context_t serv_ctx;
static struct triton_md_handler_t serv_hnd;
static void send_banner(struct client_t *cln)
{
write(cln->hnd.fd, BANNER, sizeof(BANNER));
}
static int cln_read(struct triton_md_handler_t *h)
{
struct client_t *cln = container_of(h, typeof(*cln), hnd);
int n;
while (1) {
n = read(h->fd, cln->recv_buf + cln->recv_pos, RECV_BUF_SIZE - cln->recv_pos);
if (n == 0) {
//disconnect(cln);
return 0;
}
if (n < 0) {
if (errno != EAGAIN)
log_error("cli: read: %s\n", strerror(errno));
return 0;
}
log_debug("cli: read(%i): ", n);
}
return 0;
}
static int serv_read(struct triton_md_handler_t *h)
{
struct sockaddr_in addr;
socklen_t size = sizeof(addr);
int sock;
struct client_t *conn;
while(1) {
sock = accept(h->fd, (struct sockaddr *)&addr, &size);
if (sock < 0) {
if (errno == EAGAIN)
return 0;
log_error("cli: accept failed: %s\n", strerror(errno));
continue;
}
log_info("cli: new connection from %s\n", inet_ntoa(addr.sin_addr));
if (fcntl(sock, F_SETFL, O_NONBLOCK)) {
log_error("cli: failed to set nonblocking mode: %s, closing connection...\n", strerror(errno));
close(sock);
continue;
}
conn = _malloc(sizeof(*conn));
memset(conn, 0, sizeof(*conn));
conn->hnd.fd = sock;
conn->hnd.read = cln_read;
//conn->hnd.write = cln_write;
conn->recv_buf = _malloc(RECV_BUF_SIZE);
INIT_LIST_HEAD(&conn->xmit_queue);
triton_md_register_handler(&serv_ctx, &conn->hnd);
triton_md_enable_handler(&conn->hnd,MD_MODE_READ);
send_banner(conn);
}
return 0;
}
static void serv_close(struct triton_context_t *ctx)
{
triton_md_unregister_handler(&serv_hnd);
close(serv_hnd.fd);
triton_context_unregister(ctx);
}
static struct triton_context_t serv_ctx = {
.close = serv_close,
};
static struct triton_md_handler_t serv_hnd = {
.read = serv_read,
};
static void start_server(const char *host, int port)
{
struct sockaddr_in addr;
serv_hnd.fd = socket(PF_INET, SOCK_STREAM, 0);
if (serv_hnd.fd < 0) {
log_emerg("cli: failed to create server socket: %s\n", strerror(errno));
return;
}
if (bind (serv_hnd.fd, (struct sockaddr *) &addr, sizeof (addr)) < 0) {
log_emerg("cli: failed to bind socket: %s\n", strerror(errno));
close(serv_hnd.fd);
return;
}
if (listen (serv_hnd.fd, 1) < 0) {
log_emerg("cli: failed to listen socket: %s\n", strerror(errno));
close(serv_hnd.fd);
return;
}
if (fcntl(serv_hnd.fd, F_SETFL, O_NONBLOCK)) {
log_emerg("cli: failed to set nonblocking mode: %s\n", strerror(errno));
close(serv_hnd.fd);
return;
}
addr.sin_family = AF_INET;
addr.sin_port = htons(port);
addr.sin_addr.s_addr = inet_addr(host);
triton_context_register(&serv_ctx, NULL);
triton_md_register_handler(&serv_ctx, &serv_hnd);
triton_md_enable_handler(&serv_hnd, MD_MODE_READ);
triton_context_wakeup(&serv_ctx);
}
static void __init init(void)
{
const char *opt;
int port = 0;
const char *host="127.0.0.1";
opt = conf_get_opt("cli", "port");
if (opt && atoi(opt) > 0)
port = atoi(opt);
opt = conf_get_opt("cli", "bind");
if (opt)
host = opt;
if (!host || !port) {
log_emerg("cli: disabled\n");
return;
}
start_server(host, port);
}
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