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Commit | Line | Data |
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f0cbd3ec FB |
1 | /* |
2 | * Copyright (c) 1995 Danny Gasparovski. | |
5fafdf24 | 3 | * |
f0cbd3ec FB |
4 | * Please read the file COPYRIGHT for the |
5 | * terms and conditions of the copyright. | |
6 | */ | |
7 | ||
f0cbd3ec | 8 | #include <slirp.h> |
6dbe553f JK |
9 | #include <libslirp.h> |
10 | ||
11 | #include "monitor.h" | |
f0cbd3ec | 12 | |
9f349498 JK |
13 | #ifdef DEBUG |
14 | int slirp_debug = DBG_CALL|DBG_MISC|DBG_ERROR; | |
15 | #endif | |
16 | ||
f0cbd3ec FB |
17 | struct quehead { |
18 | struct quehead *qh_link; | |
19 | struct quehead *qh_rlink; | |
20 | }; | |
21 | ||
22 | inline void | |
511d2b14 | 23 | insque(void *a, void *b) |
f0cbd3ec FB |
24 | { |
25 | register struct quehead *element = (struct quehead *) a; | |
26 | register struct quehead *head = (struct quehead *) b; | |
27 | element->qh_link = head->qh_link; | |
28 | head->qh_link = (struct quehead *)element; | |
29 | element->qh_rlink = (struct quehead *)head; | |
30 | ((struct quehead *)(element->qh_link))->qh_rlink | |
31 | = (struct quehead *)element; | |
32 | } | |
33 | ||
34 | inline void | |
511d2b14 | 35 | remque(void *a) |
f0cbd3ec FB |
36 | { |
37 | register struct quehead *element = (struct quehead *) a; | |
38 | ((struct quehead *)(element->qh_link))->qh_rlink = element->qh_rlink; | |
39 | ((struct quehead *)(element->qh_rlink))->qh_link = element->qh_link; | |
40 | element->qh_rlink = NULL; | |
f0cbd3ec FB |
41 | } |
42 | ||
a13a4126 JK |
43 | int add_exec(struct ex_list **ex_ptr, int do_pty, char *exec, |
44 | struct in_addr addr, int port) | |
f0cbd3ec FB |
45 | { |
46 | struct ex_list *tmp_ptr; | |
5fafdf24 | 47 | |
f0cbd3ec FB |
48 | /* First, check if the port is "bound" */ |
49 | for (tmp_ptr = *ex_ptr; tmp_ptr; tmp_ptr = tmp_ptr->ex_next) { | |
a13a4126 JK |
50 | if (port == tmp_ptr->ex_fport && |
51 | addr.s_addr == tmp_ptr->ex_addr.s_addr) | |
52 | return -1; | |
f0cbd3ec | 53 | } |
5fafdf24 | 54 | |
f0cbd3ec FB |
55 | tmp_ptr = *ex_ptr; |
56 | *ex_ptr = (struct ex_list *)malloc(sizeof(struct ex_list)); | |
57 | (*ex_ptr)->ex_fport = port; | |
58 | (*ex_ptr)->ex_addr = addr; | |
59 | (*ex_ptr)->ex_pty = do_pty; | |
e1c5a2b3 | 60 | (*ex_ptr)->ex_exec = (do_pty == 3) ? exec : strdup(exec); |
f0cbd3ec FB |
61 | (*ex_ptr)->ex_next = tmp_ptr; |
62 | return 0; | |
63 | } | |
64 | ||
65 | #ifndef HAVE_STRERROR | |
66 | ||
67 | /* | |
68 | * For systems with no strerror | |
69 | */ | |
70 | ||
71 | extern int sys_nerr; | |
72 | extern char *sys_errlist[]; | |
73 | ||
74 | char * | |
75 | strerror(error) | |
76 | int error; | |
77 | { | |
78 | if (error < sys_nerr) | |
79 | return sys_errlist[error]; | |
80 | else | |
81 | return "Unknown error."; | |
82 | } | |
83 | ||
84 | #endif | |
85 | ||
86 | ||
a3d4af03 FB |
87 | #ifdef _WIN32 |
88 | ||
89 | int | |
9634d903 | 90 | fork_exec(struct socket *so, const char *ex, int do_pty) |
a3d4af03 FB |
91 | { |
92 | /* not implemented */ | |
93 | return 0; | |
94 | } | |
95 | ||
96 | #else | |
97 | ||
f0cbd3ec FB |
98 | /* |
99 | * XXX This is ugly | |
100 | * We create and bind a socket, then fork off to another | |
101 | * process, which connects to this socket, after which we | |
102 | * exec the wanted program. If something (strange) happens, | |
103 | * the accept() call could block us forever. | |
5fafdf24 | 104 | * |
f0cbd3ec FB |
105 | * do_pty = 0 Fork/exec inetd style |
106 | * do_pty = 1 Fork/exec using slirp.telnetd | |
107 | * do_ptr = 2 Fork/exec using pty | |
108 | */ | |
109 | int | |
9634d903 | 110 | fork_exec(struct socket *so, const char *ex, int do_pty) |
f0cbd3ec FB |
111 | { |
112 | int s; | |
113 | struct sockaddr_in addr; | |
242acf3a | 114 | socklen_t addrlen = sizeof(addr); |
f0cbd3ec | 115 | int opt; |
7ccfb2eb | 116 | const char *argv[256]; |
f0cbd3ec FB |
117 | /* don't want to clobber the original */ |
118 | char *bptr; | |
9634d903 | 119 | const char *curarg; |
7b91a172 | 120 | int c, i, ret; |
4d54ec78 | 121 | pid_t pid; |
5fafdf24 | 122 | |
f0cbd3ec FB |
123 | DEBUG_CALL("fork_exec"); |
124 | DEBUG_ARG("so = %lx", (long)so); | |
125 | DEBUG_ARG("ex = %lx", (long)ex); | |
126 | DEBUG_ARG("do_pty = %lx", (long)do_pty); | |
5fafdf24 | 127 | |
f0cbd3ec | 128 | if (do_pty == 2) { |
3f9b2b1f | 129 | return 0; |
f0cbd3ec FB |
130 | } else { |
131 | addr.sin_family = AF_INET; | |
132 | addr.sin_port = 0; | |
133 | addr.sin_addr.s_addr = INADDR_ANY; | |
3b46e624 | 134 | |
40ff6d7e | 135 | if ((s = qemu_socket(AF_INET, SOCK_STREAM, 0)) < 0 || |
f0cbd3ec FB |
136 | bind(s, (struct sockaddr *)&addr, addrlen) < 0 || |
137 | listen(s, 1) < 0) { | |
138 | lprint("Error: inet socket: %s\n", strerror(errno)); | |
379ff53d | 139 | closesocket(s); |
3b46e624 | 140 | |
f0cbd3ec FB |
141 | return 0; |
142 | } | |
143 | } | |
5fafdf24 | 144 | |
4d54ec78 PB |
145 | pid = fork(); |
146 | switch(pid) { | |
f0cbd3ec FB |
147 | case -1: |
148 | lprint("Error: fork failed: %s\n", strerror(errno)); | |
149 | close(s); | |
f0cbd3ec | 150 | return 0; |
3b46e624 | 151 | |
f0cbd3ec | 152 | case 0: |
565465fc JK |
153 | setsid(); |
154 | ||
f0cbd3ec | 155 | /* Set the DISPLAY */ |
9f1134d4 SW |
156 | getsockname(s, (struct sockaddr *)&addr, &addrlen); |
157 | close(s); | |
158 | /* | |
159 | * Connect to the socket | |
160 | * XXX If any of these fail, we're in trouble! | |
161 | */ | |
162 | s = qemu_socket(AF_INET, SOCK_STREAM, 0); | |
163 | addr.sin_addr = loopback_addr; | |
164 | do { | |
165 | ret = connect(s, (struct sockaddr *)&addr, addrlen); | |
166 | } while (ret < 0 && errno == EINTR); | |
3b46e624 | 167 | |
f0cbd3ec FB |
168 | dup2(s, 0); |
169 | dup2(s, 1); | |
170 | dup2(s, 2); | |
9634d903 | 171 | for (s = getdtablesize() - 1; s >= 3; s--) |
f0cbd3ec | 172 | close(s); |
3b46e624 | 173 | |
f0cbd3ec | 174 | i = 0; |
7267c094 | 175 | bptr = g_strdup(ex); /* No need to free() this */ |
f0cbd3ec FB |
176 | if (do_pty == 1) { |
177 | /* Setup "slirp.telnetd -x" */ | |
178 | argv[i++] = "slirp.telnetd"; | |
179 | argv[i++] = "-x"; | |
180 | argv[i++] = bptr; | |
181 | } else | |
182 | do { | |
183 | /* Change the string into argv[] */ | |
184 | curarg = bptr; | |
185 | while (*bptr != ' ' && *bptr != (char)0) | |
186 | bptr++; | |
187 | c = *bptr; | |
188 | *bptr++ = (char)0; | |
189 | argv[i++] = strdup(curarg); | |
190 | } while (c); | |
3b46e624 | 191 | |
511d2b14 | 192 | argv[i] = NULL; |
7ccfb2eb | 193 | execvp(argv[0], (char **)argv); |
3b46e624 | 194 | |
f0cbd3ec | 195 | /* Ooops, failed, let's tell the user why */ |
f0d98b05 KS |
196 | fprintf(stderr, "Error: execvp of %s failed: %s\n", |
197 | argv[0], strerror(errno)); | |
f0cbd3ec FB |
198 | close(0); close(1); close(2); /* XXX */ |
199 | exit(1); | |
3b46e624 | 200 | |
f0cbd3ec | 201 | default: |
4d54ec78 | 202 | qemu_add_child_watch(pid); |
9f1134d4 SW |
203 | /* |
204 | * XXX this could block us... | |
205 | * XXX Should set a timer here, and if accept() doesn't | |
206 | * return after X seconds, declare it a failure | |
207 | * The only reason this will block forever is if socket() | |
208 | * of connect() fail in the child process | |
209 | */ | |
210 | do { | |
211 | so->s = accept(s, (struct sockaddr *)&addr, &addrlen); | |
212 | } while (so->s < 0 && errno == EINTR); | |
213 | closesocket(s); | |
214 | opt = 1; | |
215 | setsockopt(so->s, SOL_SOCKET, SO_REUSEADDR, (char *)&opt, sizeof(int)); | |
216 | opt = 1; | |
217 | setsockopt(so->s, SOL_SOCKET, SO_OOBINLINE, (char *)&opt, sizeof(int)); | |
1c5970a8 | 218 | socket_set_nonblock(so->s); |
3b46e624 | 219 | |
f0cbd3ec | 220 | /* Append the telnet options now */ |
511d2b14 | 221 | if (so->so_m != NULL && do_pty == 1) { |
f0cbd3ec | 222 | sbappend(so, so->so_m); |
511d2b14 | 223 | so->so_m = NULL; |
f0cbd3ec | 224 | } |
3b46e624 | 225 | |
f0cbd3ec FB |
226 | return 1; |
227 | } | |
228 | } | |
229 | #endif | |
230 | ||
231 | #ifndef HAVE_STRDUP | |
232 | char * | |
233 | strdup(str) | |
234 | const char *str; | |
235 | { | |
236 | char *bptr; | |
5fafdf24 | 237 | |
f0cbd3ec FB |
238 | bptr = (char *)malloc(strlen(str)+1); |
239 | strcpy(bptr, str); | |
5fafdf24 | 240 | |
f0cbd3ec FB |
241 | return bptr; |
242 | } | |
243 | #endif | |
244 | ||
376253ec | 245 | #include "monitor.h" |
c9f10306 | 246 | |
31a60e22 BS |
247 | void lprint(const char *format, ...) |
248 | { | |
249 | va_list args; | |
250 | ||
251 | va_start(args, format); | |
8631b608 | 252 | monitor_vprintf(default_mon, format, args); |
31a60e22 BS |
253 | va_end(args); |
254 | } | |
f0cbd3ec | 255 | |
f0cbd3ec | 256 | void |
511d2b14 | 257 | u_sleep(int usec) |
f0cbd3ec FB |
258 | { |
259 | struct timeval t; | |
260 | fd_set fdset; | |
5fafdf24 | 261 | |
f0cbd3ec | 262 | FD_ZERO(&fdset); |
5fafdf24 | 263 | |
f0cbd3ec FB |
264 | t.tv_sec = 0; |
265 | t.tv_usec = usec * 1000; | |
5fafdf24 | 266 | |
f0cbd3ec FB |
267 | select(0, &fdset, &fdset, &fdset, &t); |
268 | } | |
269 | ||
9f8bd042 | 270 | void slirp_connection_info(Slirp *slirp, Monitor *mon) |
6dbe553f JK |
271 | { |
272 | const char * const tcpstates[] = { | |
273 | [TCPS_CLOSED] = "CLOSED", | |
274 | [TCPS_LISTEN] = "LISTEN", | |
275 | [TCPS_SYN_SENT] = "SYN_SENT", | |
276 | [TCPS_SYN_RECEIVED] = "SYN_RCVD", | |
277 | [TCPS_ESTABLISHED] = "ESTABLISHED", | |
278 | [TCPS_CLOSE_WAIT] = "CLOSE_WAIT", | |
279 | [TCPS_FIN_WAIT_1] = "FIN_WAIT_1", | |
280 | [TCPS_CLOSING] = "CLOSING", | |
281 | [TCPS_LAST_ACK] = "LAST_ACK", | |
282 | [TCPS_FIN_WAIT_2] = "FIN_WAIT_2", | |
283 | [TCPS_TIME_WAIT] = "TIME_WAIT", | |
284 | }; | |
285 | struct in_addr dst_addr; | |
286 | struct sockaddr_in src; | |
287 | socklen_t src_len; | |
288 | uint16_t dst_port; | |
289 | struct socket *so; | |
290 | const char *state; | |
291 | char buf[20]; | |
6dbe553f JK |
292 | |
293 | monitor_printf(mon, " Protocol[State] FD Source Address Port " | |
294 | "Dest. Address Port RecvQ SendQ\n"); | |
295 | ||
460fec67 | 296 | for (so = slirp->tcb.so_next; so != &slirp->tcb; so = so->so_next) { |
6dbe553f JK |
297 | if (so->so_state & SS_HOSTFWD) { |
298 | state = "HOST_FORWARD"; | |
299 | } else if (so->so_tcpcb) { | |
300 | state = tcpstates[so->so_tcpcb->t_state]; | |
301 | } else { | |
302 | state = "NONE"; | |
303 | } | |
304 | if (so->so_state & (SS_HOSTFWD | SS_INCOMING)) { | |
305 | src_len = sizeof(src); | |
306 | getsockname(so->s, (struct sockaddr *)&src, &src_len); | |
307 | dst_addr = so->so_laddr; | |
308 | dst_port = so->so_lport; | |
309 | } else { | |
310 | src.sin_addr = so->so_laddr; | |
311 | src.sin_port = so->so_lport; | |
312 | dst_addr = so->so_faddr; | |
313 | dst_port = so->so_fport; | |
314 | } | |
f293d8b1 AL |
315 | snprintf(buf, sizeof(buf), " TCP[%s]", state); |
316 | monitor_printf(mon, "%-19s %3d %15s %5d ", buf, so->s, | |
6dbe553f JK |
317 | src.sin_addr.s_addr ? inet_ntoa(src.sin_addr) : "*", |
318 | ntohs(src.sin_port)); | |
319 | monitor_printf(mon, "%15s %5d %5d %5d\n", | |
320 | inet_ntoa(dst_addr), ntohs(dst_port), | |
321 | so->so_rcv.sb_cc, so->so_snd.sb_cc); | |
322 | } | |
323 | ||
460fec67 | 324 | for (so = slirp->udb.so_next; so != &slirp->udb; so = so->so_next) { |
6dbe553f | 325 | if (so->so_state & SS_HOSTFWD) { |
f293d8b1 | 326 | snprintf(buf, sizeof(buf), " UDP[HOST_FORWARD]"); |
6dbe553f JK |
327 | src_len = sizeof(src); |
328 | getsockname(so->s, (struct sockaddr *)&src, &src_len); | |
329 | dst_addr = so->so_laddr; | |
330 | dst_port = so->so_lport; | |
331 | } else { | |
f293d8b1 | 332 | snprintf(buf, sizeof(buf), " UDP[%d sec]", |
6dbe553f JK |
333 | (so->so_expire - curtime) / 1000); |
334 | src.sin_addr = so->so_laddr; | |
335 | src.sin_port = so->so_lport; | |
336 | dst_addr = so->so_faddr; | |
337 | dst_port = so->so_fport; | |
338 | } | |
f293d8b1 | 339 | monitor_printf(mon, "%-19s %3d %15s %5d ", buf, so->s, |
6dbe553f JK |
340 | src.sin_addr.s_addr ? inet_ntoa(src.sin_addr) : "*", |
341 | ntohs(src.sin_port)); | |
342 | monitor_printf(mon, "%15s %5d %5d %5d\n", | |
343 | inet_ntoa(dst_addr), ntohs(dst_port), | |
344 | so->so_rcv.sb_cc, so->so_snd.sb_cc); | |
345 | } | |
e6d43cfb JK |
346 | |
347 | for (so = slirp->icmp.so_next; so != &slirp->icmp; so = so->so_next) { | |
f293d8b1 | 348 | snprintf(buf, sizeof(buf), " ICMP[%d sec]", |
e6d43cfb JK |
349 | (so->so_expire - curtime) / 1000); |
350 | src.sin_addr = so->so_laddr; | |
351 | dst_addr = so->so_faddr; | |
f293d8b1 | 352 | monitor_printf(mon, "%-19s %3d %15s - ", buf, so->s, |
e6d43cfb JK |
353 | src.sin_addr.s_addr ? inet_ntoa(src.sin_addr) : "*"); |
354 | monitor_printf(mon, "%15s - %5d %5d\n", inet_ntoa(dst_addr), | |
355 | so->so_rcv.sb_cc, so->so_snd.sb_cc); | |
356 | } | |
6dbe553f | 357 | } |