2 * Copyright (c) 1995 Danny Gasparovski.
4 * Please read the file COPYRIGHT for the
5 * terms and conditions of the copyright.
11 #include "monitor/monitor.h"
12 #include "qemu/main-loop.h"
15 int slirp_debug = DBG_CALL|DBG_MISC|DBG_ERROR;
19 struct quehead *qh_link;
20 struct quehead *qh_rlink;
24 insque(void *a, void *b)
26 register struct quehead *element = (struct quehead *) a;
27 register struct quehead *head = (struct quehead *) b;
28 element->qh_link = head->qh_link;
29 head->qh_link = (struct quehead *)element;
30 element->qh_rlink = (struct quehead *)head;
31 ((struct quehead *)(element->qh_link))->qh_rlink
32 = (struct quehead *)element;
38 register struct quehead *element = (struct quehead *) a;
39 ((struct quehead *)(element->qh_link))->qh_rlink = element->qh_rlink;
40 ((struct quehead *)(element->qh_rlink))->qh_link = element->qh_link;
41 element->qh_rlink = NULL;
44 int add_exec(struct ex_list **ex_ptr, int do_pty, char *exec,
45 struct in_addr addr, int port)
47 struct ex_list *tmp_ptr;
49 /* First, check if the port is "bound" */
50 for (tmp_ptr = *ex_ptr; tmp_ptr; tmp_ptr = tmp_ptr->ex_next) {
51 if (port == tmp_ptr->ex_fport &&
52 addr.s_addr == tmp_ptr->ex_addr.s_addr)
57 *ex_ptr = (struct ex_list *)malloc(sizeof(struct ex_list));
58 (*ex_ptr)->ex_fport = port;
59 (*ex_ptr)->ex_addr = addr;
60 (*ex_ptr)->ex_pty = do_pty;
61 (*ex_ptr)->ex_exec = (do_pty == 3) ? exec : strdup(exec);
62 (*ex_ptr)->ex_next = tmp_ptr;
69 * For systems with no strerror
73 extern char *sys_errlist[];
80 return sys_errlist[error];
82 return "Unknown error.";
91 fork_exec(struct socket *so, const char *ex, int do_pty)
101 * We create and bind a socket, then fork off to another
102 * process, which connects to this socket, after which we
103 * exec the wanted program. If something (strange) happens,
104 * the accept() call could block us forever.
106 * do_pty = 0 Fork/exec inetd style
107 * do_pty = 1 Fork/exec using slirp.telnetd
108 * do_ptr = 2 Fork/exec using pty
111 fork_exec(struct socket *so, const char *ex, int do_pty)
114 struct sockaddr_in addr;
115 socklen_t addrlen = sizeof(addr);
117 const char *argv[256];
118 /* don't want to clobber the original */
124 DEBUG_CALL("fork_exec");
125 DEBUG_ARG("so = %lx", (long)so);
126 DEBUG_ARG("ex = %lx", (long)ex);
127 DEBUG_ARG("do_pty = %lx", (long)do_pty);
132 addr.sin_family = AF_INET;
134 addr.sin_addr.s_addr = INADDR_ANY;
136 if ((s = qemu_socket(AF_INET, SOCK_STREAM, 0)) < 0 ||
137 bind(s, (struct sockaddr *)&addr, addrlen) < 0 ||
139 lprint("Error: inet socket: %s\n", strerror(errno));
149 lprint("Error: fork failed: %s\n", strerror(errno));
156 /* Set the DISPLAY */
157 getsockname(s, (struct sockaddr *)&addr, &addrlen);
160 * Connect to the socket
161 * XXX If any of these fail, we're in trouble!
163 s = qemu_socket(AF_INET, SOCK_STREAM, 0);
164 addr.sin_addr = loopback_addr;
166 ret = connect(s, (struct sockaddr *)&addr, addrlen);
167 } while (ret < 0 && errno == EINTR);
172 for (s = getdtablesize() - 1; s >= 3; s--)
176 bptr = g_strdup(ex); /* No need to free() this */
178 /* Setup "slirp.telnetd -x" */
179 argv[i++] = "slirp.telnetd";
184 /* Change the string into argv[] */
186 while (*bptr != ' ' && *bptr != (char)0)
190 argv[i++] = strdup(curarg);
194 execvp(argv[0], (char **)argv);
196 /* Ooops, failed, let's tell the user why */
197 fprintf(stderr, "Error: execvp of %s failed: %s\n",
198 argv[0], strerror(errno));
199 close(0); close(1); close(2); /* XXX */
203 qemu_add_child_watch(pid);
205 * XXX this could block us...
206 * XXX Should set a timer here, and if accept() doesn't
207 * return after X seconds, declare it a failure
208 * The only reason this will block forever is if socket()
209 * of connect() fail in the child process
212 so->s = accept(s, (struct sockaddr *)&addr, &addrlen);
213 } while (so->s < 0 && errno == EINTR);
216 qemu_setsockopt(so->s, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(int));
218 qemu_setsockopt(so->s, SOL_SOCKET, SO_OOBINLINE, &opt, sizeof(int));
219 qemu_set_nonblock(so->s);
221 /* Append the telnet options now */
222 if (so->so_m != NULL && do_pty == 1) {
223 sbappend(so, so->so_m);
239 bptr = (char *)malloc(strlen(str)+1);
246 void lprint(const char *format, ...)
250 va_start(args, format);
251 monitor_vprintf(default_mon, format, args);
255 void slirp_connection_info(Slirp *slirp, Monitor *mon)
257 const char * const tcpstates[] = {
258 [TCPS_CLOSED] = "CLOSED",
259 [TCPS_LISTEN] = "LISTEN",
260 [TCPS_SYN_SENT] = "SYN_SENT",
261 [TCPS_SYN_RECEIVED] = "SYN_RCVD",
262 [TCPS_ESTABLISHED] = "ESTABLISHED",
263 [TCPS_CLOSE_WAIT] = "CLOSE_WAIT",
264 [TCPS_FIN_WAIT_1] = "FIN_WAIT_1",
265 [TCPS_CLOSING] = "CLOSING",
266 [TCPS_LAST_ACK] = "LAST_ACK",
267 [TCPS_FIN_WAIT_2] = "FIN_WAIT_2",
268 [TCPS_TIME_WAIT] = "TIME_WAIT",
270 struct in_addr dst_addr;
271 struct sockaddr_in src;
278 monitor_printf(mon, " Protocol[State] FD Source Address Port "
279 "Dest. Address Port RecvQ SendQ\n");
281 for (so = slirp->tcb.so_next; so != &slirp->tcb; so = so->so_next) {
282 if (so->so_state & SS_HOSTFWD) {
283 state = "HOST_FORWARD";
284 } else if (so->so_tcpcb) {
285 state = tcpstates[so->so_tcpcb->t_state];
289 if (so->so_state & (SS_HOSTFWD | SS_INCOMING)) {
290 src_len = sizeof(src);
291 getsockname(so->s, (struct sockaddr *)&src, &src_len);
292 dst_addr = so->so_laddr;
293 dst_port = so->so_lport;
295 src.sin_addr = so->so_laddr;
296 src.sin_port = so->so_lport;
297 dst_addr = so->so_faddr;
298 dst_port = so->so_fport;
300 snprintf(buf, sizeof(buf), " TCP[%s]", state);
301 monitor_printf(mon, "%-19s %3d %15s %5d ", buf, so->s,
302 src.sin_addr.s_addr ? inet_ntoa(src.sin_addr) : "*",
303 ntohs(src.sin_port));
304 monitor_printf(mon, "%15s %5d %5d %5d\n",
305 inet_ntoa(dst_addr), ntohs(dst_port),
306 so->so_rcv.sb_cc, so->so_snd.sb_cc);
309 for (so = slirp->udb.so_next; so != &slirp->udb; so = so->so_next) {
310 if (so->so_state & SS_HOSTFWD) {
311 snprintf(buf, sizeof(buf), " UDP[HOST_FORWARD]");
312 src_len = sizeof(src);
313 getsockname(so->s, (struct sockaddr *)&src, &src_len);
314 dst_addr = so->so_laddr;
315 dst_port = so->so_lport;
317 snprintf(buf, sizeof(buf), " UDP[%d sec]",
318 (so->so_expire - curtime) / 1000);
319 src.sin_addr = so->so_laddr;
320 src.sin_port = so->so_lport;
321 dst_addr = so->so_faddr;
322 dst_port = so->so_fport;
324 monitor_printf(mon, "%-19s %3d %15s %5d ", buf, so->s,
325 src.sin_addr.s_addr ? inet_ntoa(src.sin_addr) : "*",
326 ntohs(src.sin_port));
327 monitor_printf(mon, "%15s %5d %5d %5d\n",
328 inet_ntoa(dst_addr), ntohs(dst_port),
329 so->so_rcv.sb_cc, so->so_snd.sb_cc);
332 for (so = slirp->icmp.so_next; so != &slirp->icmp; so = so->so_next) {
333 snprintf(buf, sizeof(buf), " ICMP[%d sec]",
334 (so->so_expire - curtime) / 1000);
335 src.sin_addr = so->so_laddr;
336 dst_addr = so->so_faddr;
337 monitor_printf(mon, "%-19s %3d %15s - ", buf, so->s,
338 src.sin_addr.s_addr ? inet_ntoa(src.sin_addr) : "*");
339 monitor_printf(mon, "%15s - %5d %5d\n", inet_ntoa(dst_addr),
340 so->so_rcv.sb_cc, so->so_snd.sb_cc);