12 static char *encprotos[] = {
21 char *ealgs = "rc4_256 sha1";
22 int encproto = Encnone;
23 char *aan = "/bin/aan";
24 char *anstring = "tcp!*!0";
31 int connect(char*, char*, int);
34 void catcher(void*, char*);
35 void sysfatal(char*, ...);
37 int filter(int, char *, char *);
39 static void mksecret(char *, uchar *);
42 * based on libthread's threadsetname, but drags in less library code.
43 * actually just sets the arguments displayed.
46 procsetname(char *fmt, ...)
54 cmdname = vsmprint(fmt, arg);
58 snprint(buf, sizeof buf, "#p/%d/args", getpid());
59 if((fd = open(buf, OWRITE)) >= 0){
60 write(fd, cmdname, strlen(cmdname)+1);
67 post(char *name, char *envname, int srvfd)
72 fd = create(name, OWRITE, 0600);
75 snprint(buf, sizeof(buf), "%d", srvfd);
76 if(write(fd, buf, strlen(buf)) != strlen(buf))
77 sysfatal("srv write: %r");
79 putenv(envname, name);
83 lookup(char *s, char *l[])
87 for (i = 0; l[i] != 0; i++)
88 if (strcmp(l[i], s) == 0)
94 main(int argc, char **argv)
96 char *mntpt, *srvpost, srvfile[64];
97 int backwards = 0, fd, mntflags, oldserver;
123 /* ignored but allowed for compatibility */
130 if ((encproto = lookup(EARGF(usage()), encprotos)) < 0)
134 ealgs = EARGF(usage());
135 if(*ealgs == 0 || strcmp(ealgs, "clear") == 0)
139 keyspec = EARGF(usage());
145 anstring = EARGF(usage());
148 srvpost = EARGF(usage());
160 mntpt = 0; /* to shut up compiler */
182 if (encproto == Enctls)
183 sysfatal("%s: tls has not yet been implemented", argv[0]);
191 fd = connect(argv[0], argv[1], oldserver);
194 fprint(fd, "impo %s %s\n", filterp? "aan": "nofilter",
195 encprotos[encproto]);
197 if (encproto != Encnone && ealgs && ai) {
198 uchar key[16], digest[SHA1dlen];
199 char fromclientsecret[21];
200 char fromserversecret[21];
203 assert(ai->nsecret <= sizeof(key)-4);
204 memmove(key+4, ai->secret, ai->nsecret);
206 /* exchange random numbers */
208 for(i = 0; i < 4; i++)
210 if(write(fd, key, 4) != 4)
211 sysfatal("can't write key part: %r");
212 if(readn(fd, key+12, 4) != 4)
213 sysfatal("can't read key part: %r");
215 /* scramble into two secrets */
216 sha1(key, sizeof(key), digest, nil);
217 mksecret(fromclientsecret, digest);
218 mksecret(fromserversecret, digest+10);
221 fd = filter(fd, filterp, backwards ? nil : argv[0]);
223 /* set up encryption */
224 procsetname("pushssl");
225 fd = pushssl(fd, ealgs, fromclientsecret, fromserversecret, nil);
227 sysfatal("can't establish ssl connection: %r");
230 fd = filter(fd, filterp, backwards ? nil : argv[0]);
236 snprint(srvfile, sizeof(srvfile), "/srv/%s", srvpost);
238 post(srvfile, srvpost, fd);
240 procsetname("mount on %s", mntpt);
241 if(mount(fd, -1, mntpt, mntflags, "") < 0)
242 sysfatal("can't mount %s: %r", argv[1]);
245 if(backwards && argc > 1){
246 exec(argv[1], &argv[1]);
247 sysfatal("exec: %r");
253 catcher(void*, char *msg)
256 if(strcmp(msg, "alarm") == 0)
266 procsetname("old9p");
268 sysfatal("pipe: %r");
270 switch(rfork(RFPROC|RFMEM|RFFDG|RFNAMEG)) {
272 sysfatal("rfork srvold9p: %r");
284 fd = open("/sys/log/cpu", OWRITE);
289 execl("/bin/srvold9p", "srvold9p", "-ds", nil);
291 execl("/bin/srvold9p", "srvold9p", "-s", nil);
292 sysfatal("exec srvold9p: %r");
301 connect(char *system, char *tree, int oldserver)
303 char buf[ERRMAX], dir[128], *na;
307 na = netmkaddr(system, 0, "exportfs");
308 procsetname("dial %s", na);
309 if((fd = dial(na, 0, dir, 0)) < 0)
310 sysfatal("can't dial %s: %r", system);
318 procsetname("auth_proxy auth_getkey proto=%q role=client %s",
320 ai = auth_proxy(fd, auth_getkey, "proto=%q role=client %s",
323 sysfatal("%r: %s", system);
327 procsetname("writing tree name %s", tree);
328 n = write(fd, tree, strlen(tree));
330 sysfatal("can't write tree: %r");
332 strcpy(buf, "can't read tree");
334 procsetname("awaiting OK for %s", tree);
335 n = read(fd, buf, sizeof buf - 1);
336 if(n!=2 || buf[0]!='O' || buf[1]!='K'){
338 sysfatal("timed out connecting to %s", na);
339 buf[sizeof buf - 1] = '\0';
340 sysfatal("bad remote tree: %s", buf);
355 * Ignore doauth==0 on purpose. Is it useful here?
358 procsetname("auth_proxy auth_getkey proto=p9any role=server");
359 ai = auth_proxy(0, auth_getkey, "proto=p9any role=server");
361 sysfatal("auth_proxy: %r");
362 if(auth_chuid(ai, nil) < 0)
363 sysfatal("auth_chuid: %r");
364 putenv("service", "import");
368 open("/dev/null", ORDWR);
370 open("/dev/null", ORDWR);
378 fprint(2, "usage: import [-abcC] [-A] [-E clear|ssl|tls] "
379 "[-e 'crypt auth'|clear] [-k keypattern] [-p] [-n address ] [-z] host remotefs [mountpoint]\n");
384 filter(int fd, char *cmd, char *host)
386 char addr[128], buf[256], *s, *file, *argv[16];
387 int lfd, p[2], len, argc;
390 /* Get a free port and post it to the client. */
391 if (announce(anstring, addr) < 0)
392 sysfatal("filter: Cannot announce %s: %r", anstring);
394 snprint(buf, sizeof(buf), "%s/local", addr);
395 if ((lfd = open(buf, OREAD)) < 0)
396 sysfatal("filter: Cannot open %s: %r", buf);
397 if ((len = read(lfd, buf, sizeof buf - 1)) < 0)
398 sysfatal("filter: Cannot read %s: %r", buf);
401 if ((s = strchr(buf, '\n')) != nil)
403 if (write(fd, buf, len) != len)
404 sysfatal("filter: cannot write port; %r");
406 /* Read address string from connection */
407 if ((len = read(fd, buf, sizeof buf - 1)) < 0)
408 sysfatal("filter: cannot write port; %r");
411 if ((s = strrchr(buf, '!')) == nil)
412 sysfatal("filter: illegally formatted port %s", buf);
413 strecpy(addr, addr+sizeof(addr), netmkaddr(host, "tcp", s+1));
414 strecpy(strrchr(addr, '!'), addr+sizeof(addr), s);
418 fprint(2, "filter: %s\n", addr);
420 snprint(buf, sizeof(buf), "%s", cmd);
421 argc = tokenize(buf, argv, nelem(argv)-3);
423 sysfatal("filter: empty command");
431 if((s = strrchr(argv[0], '/')) != nil)
435 sysfatal("pipe: %r");
437 switch(rfork(RFNOWAIT|RFPROC|RFMEM|RFFDG|RFREND)) {
439 sysfatal("filter: rfork; %r\n");
442 if (dup(p[0], 1) < 0)
443 sysfatal("filter: Cannot dup to 1; %r");
444 if (dup(p[0], 0) < 0)
445 sysfatal("filter: Cannot dup to 0; %r");
449 sysfatal("filter: exec; %r");
459 mksecret(char *t, uchar *f)
461 sprint(t, "%2.2ux%2.2ux%2.2ux%2.2ux%2.2ux%2.2ux%2.2ux%2.2ux%2.2ux%2.2ux",
462 f[0], f[1], f[2], f[3], f[4], f[5], f[6], f[7], f[8], f[9]);