Commit | Line | Data |
---|---|---|
c55a77db PH |
1 | /* A little hacked up program that listens on a given port and allows a script |
2 | to play the part of a remote MTA for testing purposes. This scripted version is | |
3 | hacked from my original interactive version. A further hack allows it to listen | |
4 | on a Unix domain socket as an alternative to a TCP/IP port. | |
5 | ||
6 | In an IPv6 world, listening happens on both an IPv6 and an IPv4 socket, always | |
7 | on all interfaces, unless the option -noipv6 is given. */ | |
8 | ||
9 | /* ANSI C standard includes */ | |
10 | ||
11 | #include <ctype.h> | |
12 | #include <signal.h> | |
13 | #include <stdarg.h> | |
14 | #include <stddef.h> | |
15 | #include <stdio.h> | |
16 | #include <stdlib.h> | |
17 | #include <string.h> | |
18 | #include <time.h> | |
19 | ||
20 | /* Unix includes */ | |
21 | ||
22 | #include <errno.h> | |
23 | #include <dirent.h> | |
24 | #include <sys/types.h> | |
25 | ||
26 | #include <netinet/in_systm.h> | |
27 | #include <netinet/in.h> | |
28 | #include <netinet/ip.h> | |
29 | ||
30 | #ifdef HAVE_NETINET_IP_VAR_H | |
31 | #include <netinet/ip_var.h> | |
32 | #endif | |
33 | ||
34 | #include <netdb.h> | |
35 | #include <arpa/inet.h> | |
36 | #include <sys/time.h> | |
37 | #include <sys/resource.h> | |
38 | #include <sys/socket.h> | |
39 | #include <sys/un.h> | |
40 | #include <sys/stat.h> | |
41 | #include <fcntl.h> | |
42 | #include <unistd.h> | |
43 | #include <utime.h> | |
44 | ||
45 | #ifdef AF_INET6 | |
a719fce4 | 46 | # define HAVE_IPV6 1 |
c55a77db PH |
47 | #endif |
48 | ||
49 | #ifndef S_ADDR_TYPE | |
a719fce4 JH |
50 | # define S_ADDR_TYPE u_long |
51 | #endif | |
52 | ||
53 | #ifndef CS | |
54 | # define CS (char *) | |
c55a77db PH |
55 | #endif |
56 | ||
57 | ||
58 | typedef struct line { | |
59 | struct line *next; | |
7eb6c37c | 60 | unsigned len; |
c55a77db PH |
61 | char line[1]; |
62 | } line; | |
63 | ||
64 | ||
65 | /************************************************* | |
66 | * SIGALRM handler - crash out * | |
67 | *************************************************/ | |
68 | ||
69 | static void | |
70 | sigalrm_handler(int sig) | |
71 | { | |
72 | sig = sig; /* Keep picky compilers happy */ | |
73 | printf("\nServer timed out\n"); | |
74 | exit(99); | |
75 | } | |
76 | ||
77 | ||
78 | /************************************************* | |
79 | * Get textual IP address * | |
80 | *************************************************/ | |
81 | ||
82 | /* This function is copied from Exim */ | |
83 | ||
84 | char * | |
85 | host_ntoa(const void *arg, char *buffer) | |
86 | { | |
87 | char *yield; | |
88 | ||
89 | /* The new world. It is annoying that we have to fish out the address from | |
90 | different places in the block, depending on what kind of address it is. It | |
91 | is also a pain that inet_ntop() returns a const char *, whereas the IPv4 | |
92 | function inet_ntoa() returns just char *, and some picky compilers insist | |
93 | on warning if one assigns a const char * to a char *. Hence the casts. */ | |
94 | ||
95 | #if HAVE_IPV6 | |
96 | char addr_buffer[46]; | |
97 | int family = ((struct sockaddr *)arg)->sa_family; | |
98 | if (family == AF_INET6) | |
99 | { | |
100 | struct sockaddr_in6 *sk = (struct sockaddr_in6 *)arg; | |
101 | yield = (char *)inet_ntop(family, &(sk->sin6_addr), addr_buffer, | |
102 | sizeof(addr_buffer)); | |
103 | } | |
104 | else | |
105 | { | |
106 | struct sockaddr_in *sk = (struct sockaddr_in *)arg; | |
107 | yield = (char *)inet_ntop(family, &(sk->sin_addr), addr_buffer, | |
108 | sizeof(addr_buffer)); | |
109 | } | |
110 | ||
111 | /* If the result is a mapped IPv4 address, show it in V4 format. */ | |
112 | ||
113 | if (strncmp(yield, "::ffff:", 7) == 0) yield += 7; | |
114 | ||
115 | #else /* HAVE_IPV6 */ | |
116 | ||
117 | /* The old world */ | |
118 | ||
119 | yield = inet_ntoa(((struct sockaddr_in *)arg)->sin_addr); | |
120 | #endif | |
121 | ||
122 | strcpy(buffer, yield); | |
123 | return buffer; | |
124 | } | |
125 | ||
126 | ||
7eb6c37c JH |
127 | |
128 | static void | |
129 | printit(char * s, int n) | |
130 | { | |
131 | while(n--) | |
132 | { | |
133 | unsigned char c = *s++; | |
134 | if (c == '\\') | |
135 | printf("\\\\"); | |
136 | else if (c >= ' ' && c <= '~') /* assumes ascii */ | |
137 | putchar(c); | |
138 | else | |
139 | printf("\\x%02x", c); | |
140 | } | |
141 | putchar('\n'); | |
142 | } | |
143 | ||
144 | ||
145 | ||
c55a77db PH |
146 | /************************************************* |
147 | * Main Program * | |
148 | *************************************************/ | |
149 | ||
150 | #define v6n 0 /* IPv6 socket number */ | |
151 | #define v4n 1 /* IPv4 socket number */ | |
152 | #define udn 2 /* Unix domain socket number */ | |
153 | #define skn 2 /* Potential number of sockets */ | |
154 | ||
155 | int main(int argc, char **argv) | |
156 | { | |
157 | int i; | |
158 | int port = 0; | |
159 | int listen_socket[3] = { -1, -1, -1 }; | |
160 | int accept_socket; | |
161 | int dup_accept_socket; | |
162 | int connection_count = 1; | |
163 | int count; | |
164 | int on = 1; | |
165 | int timeout = 5; | |
8a512ed5 | 166 | int initial_pause = 0; |
c55a77db PH |
167 | int use_ipv4 = 1; |
168 | int use_ipv6 = 1; | |
169 | int debug = 0; | |
170 | int na = 1; | |
171 | line *script = NULL; | |
172 | line *last = NULL; | |
173 | line *s; | |
174 | FILE *in, *out; | |
7eb6c37c | 175 | int linebuf = 1; |
f41e0506 | 176 | char *pidfile = NULL; |
c55a77db PH |
177 | |
178 | char *sockname = NULL; | |
179 | unsigned char buffer[10240]; | |
180 | ||
181 | struct sockaddr_un sockun; /* don't use "sun" */ | |
182 | struct sockaddr_un sockun_accepted; | |
183 | int sockun_len = sizeof(sockun_accepted); | |
184 | ||
185 | #if HAVE_IPV6 | |
186 | struct sockaddr_in6 sin6; | |
187 | struct sockaddr_in6 accepted; | |
188 | struct in6_addr anyaddr6 = IN6ADDR_ANY_INIT ; | |
189 | #else | |
190 | struct sockaddr_in accepted; | |
191 | #endif | |
192 | ||
193 | /* Always need an IPv4 structure */ | |
194 | ||
195 | struct sockaddr_in sin4; | |
196 | ||
197 | int len = sizeof(accepted); | |
198 | ||
199 | ||
200 | /* Sort out the arguments */ | |
201 | ||
202 | while (na < argc && argv[na][0] == '-') | |
203 | { | |
204 | if (strcmp(argv[na], "-d") == 0) debug = 1; | |
205 | else if (strcmp(argv[na], "-t") == 0) timeout = atoi(argv[++na]); | |
8a512ed5 | 206 | else if (strcmp(argv[na], "-i") == 0) initial_pause = atoi(argv[++na]); |
c55a77db PH |
207 | else if (strcmp(argv[na], "-noipv4") == 0) use_ipv4 = 0; |
208 | else if (strcmp(argv[na], "-noipv6") == 0) use_ipv6 = 0; | |
f41e0506 | 209 | else if (strcmp(argv[na], "-oP") == 0) pidfile = argv[++na]; |
c55a77db PH |
210 | else |
211 | { | |
212 | printf("server: unknown option %s\n", argv[na]); | |
213 | exit(1); | |
214 | } | |
215 | na++; | |
216 | } | |
217 | ||
218 | if (!use_ipv4 && !use_ipv6) | |
219 | { | |
220 | printf("server: -noipv4 and -noipv6 cannot both be given\n"); | |
221 | exit(1); | |
222 | } | |
223 | ||
224 | if (na >= argc) | |
225 | { | |
226 | printf("server: no port number or socket name given\n"); | |
227 | exit(1); | |
228 | } | |
229 | ||
230 | if (argv[na][0] == '/') | |
231 | { | |
232 | sockname = argv[na]; | |
233 | unlink(sockname); /* in case left lying around */ | |
234 | } | |
235 | else port = atoi(argv[na]); | |
236 | na++; | |
237 | ||
238 | if (na < argc) connection_count = atoi(argv[na]); | |
239 | ||
240 | ||
8a512ed5 JH |
241 | /* Initial pause (before creating listen sockets */ |
242 | if (initial_pause > 0) | |
243 | { | |
244 | if (debug) | |
245 | printf("%d: Inital pause of %d seconds\n", time(NULL), initial_pause); | |
246 | else | |
247 | printf("Inital pause of %d seconds\n", initial_pause); | |
248 | while (initial_pause > 0) | |
249 | initial_pause = sleep(initial_pause); | |
250 | } | |
251 | ||
c55a77db PH |
252 | /* Create sockets */ |
253 | ||
254 | if (port == 0) /* Unix domain */ | |
255 | { | |
8a512ed5 | 256 | if (debug) printf("%d: Creating Unix domain socket\n", time(NULL)); |
c55a77db PH |
257 | listen_socket[udn] = socket(PF_UNIX, SOCK_STREAM, 0); |
258 | if (listen_socket[udn] < 0) | |
259 | { | |
260 | printf("Unix domain socket creation failed: %s\n", strerror(errno)); | |
261 | exit(1); | |
262 | } | |
263 | } | |
264 | else | |
265 | { | |
266 | #if HAVE_IPV6 | |
267 | if (use_ipv6) | |
268 | { | |
269 | if (debug) printf("Creating IPv6 socket\n"); | |
270 | listen_socket[v6n] = socket(AF_INET6, SOCK_STREAM, 0); | |
271 | if (listen_socket[v6n] < 0) | |
272 | { | |
273 | printf("IPv6 socket creation failed: %s\n", strerror(errno)); | |
274 | exit(1); | |
275 | } | |
276 | ||
277 | /* If this is an IPv6 wildcard socket, set IPV6_V6ONLY if that option is | |
278 | available. */ | |
279 | ||
280 | #ifdef IPV6_V6ONLY | |
281 | if (setsockopt(listen_socket[v6n], IPPROTO_IPV6, IPV6_V6ONLY, (char *)(&on), | |
282 | sizeof(on)) < 0) | |
283 | printf("Setting IPV6_V6ONLY on IPv6 wildcard " | |
284 | "socket failed (%s): carrying on without it\n", strerror(errno)); | |
285 | #endif /* IPV6_V6ONLY */ | |
286 | } | |
287 | #endif /* HAVE_IPV6 */ | |
288 | ||
289 | /* Create an IPv4 socket if required */ | |
290 | ||
291 | if (use_ipv4) | |
292 | { | |
293 | if (debug) printf("Creating IPv4 socket\n"); | |
294 | listen_socket[v4n] = socket(AF_INET, SOCK_STREAM, 0); | |
295 | if (listen_socket[v4n] < 0) | |
296 | { | |
297 | printf("IPv4 socket creation failed: %s\n", strerror(errno)); | |
298 | exit(1); | |
299 | } | |
300 | } | |
301 | } | |
302 | ||
303 | ||
304 | /* Set SO_REUSEADDR on the IP sockets so that the program can be restarted | |
305 | while a connection is being handled - this can happen as old connections lie | |
306 | around for a bit while crashed processes are tidied away. Without this, a | |
307 | connection will prevent reuse of the smtp port for listening. */ | |
308 | ||
309 | for (i = v6n; i <= v4n; i++) | |
310 | { | |
311 | if (listen_socket[i] >= 0 && | |
312 | setsockopt(listen_socket[i], SOL_SOCKET, SO_REUSEADDR, (char *)(&on), | |
313 | sizeof(on)) < 0) | |
314 | { | |
315 | printf("setting SO_REUSEADDR on socket failed: %s\n", strerror(errno)); | |
316 | exit(1); | |
317 | } | |
318 | } | |
319 | ||
320 | ||
321 | /* Now bind the sockets to the required port or path. If a path, ensure | |
322 | anyone can write to it. */ | |
323 | ||
324 | if (port == 0) | |
325 | { | |
326 | struct stat statbuf; | |
327 | sockun.sun_family = AF_UNIX; | |
328 | if (debug) printf("Binding Unix domain socket\n"); | |
329 | sprintf(sockun.sun_path, "%.*s", (int)(sizeof(sockun.sun_path)-1), sockname); | |
330 | if (bind(listen_socket[udn], (struct sockaddr *)&sockun, sizeof(sockun)) < 0) | |
331 | { | |
332 | printf("Unix domain socket bind() failed: %s\n", strerror(errno)); | |
333 | exit(1); | |
334 | } | |
335 | (void)stat(sockname, &statbuf); | |
336 | if (debug) printf("Setting Unix domain socket mode: %0x\n", | |
337 | statbuf.st_mode | 0777); | |
338 | if (chmod(sockname, statbuf.st_mode | 0777) < 0) | |
339 | { | |
340 | printf("Unix domain socket chmod() failed: %s\n", strerror(errno)); | |
341 | exit(1); | |
342 | } | |
343 | } | |
344 | ||
345 | else | |
346 | { | |
347 | for (i = 0; i < skn; i++) | |
348 | { | |
349 | if (listen_socket[i] < 0) continue; | |
350 | ||
351 | /* For an IPv6 listen, use an IPv6 socket */ | |
352 | ||
353 | #if HAVE_IPV6 | |
354 | if (i == v6n) | |
355 | { | |
356 | memset(&sin6, 0, sizeof(sin6)); | |
357 | sin6.sin6_family = AF_INET6; | |
358 | sin6.sin6_port = htons(port); | |
359 | sin6.sin6_addr = anyaddr6; | |
360 | if (bind(listen_socket[i], (struct sockaddr *)&sin6, sizeof(sin6)) < 0) | |
361 | { | |
362 | printf("IPv6 socket bind() failed: %s\n", strerror(errno)); | |
363 | exit(1); | |
364 | } | |
365 | } | |
366 | else | |
367 | #endif | |
368 | ||
369 | /* For an IPv4 bind, use an IPv4 socket, even in an IPv6 world. If an IPv4 | |
370 | bind fails EADDRINUSE after IPv6 success, carry on, because it means the | |
371 | IPv6 socket will handle IPv4 connections. */ | |
372 | ||
373 | { | |
374 | memset(&sin4, 0, sizeof(sin4)); | |
375 | sin4.sin_family = AF_INET; | |
376 | sin4.sin_addr.s_addr = (S_ADDR_TYPE)INADDR_ANY; | |
377 | sin4.sin_port = htons(port); | |
378 | if (bind(listen_socket[i], (struct sockaddr *)&sin4, sizeof(sin4)) < 0) | |
379 | { | |
380 | if (listen_socket[v6n] < 0 || errno != EADDRINUSE) | |
381 | { | |
382 | printf("IPv4 socket bind() failed: %s\n", strerror(errno)); | |
383 | exit(1); | |
384 | } | |
385 | else | |
386 | { | |
387 | close(listen_socket[i]); | |
388 | listen_socket[i] = -1; | |
389 | } | |
390 | } | |
391 | } | |
392 | } | |
393 | } | |
394 | ||
395 | ||
396 | /* Start listening. If IPv4 fails EADDRINUSE after IPv6 succeeds, ignore the | |
397 | error because it means that the IPv6 socket will handle IPv4 connections. Don't | |
398 | output anything, because it will mess up the test output, which will be | |
399 | different for systems that do this and those that don't. */ | |
400 | ||
401 | for (i = 0; i <= skn; i++) | |
402 | { | |
403 | if (listen_socket[i] >= 0 && listen(listen_socket[i], 5) < 0) | |
404 | { | |
405 | if (i != v4n || listen_socket[v6n] < 0 || errno != EADDRINUSE) | |
406 | { | |
407 | printf("listen() failed: %s\n", strerror(errno)); | |
408 | exit(1); | |
409 | } | |
410 | } | |
411 | } | |
412 | ||
413 | ||
f41e0506 JH |
414 | if (pidfile) |
415 | { | |
416 | FILE * p; | |
417 | if (!(p = fopen(pidfile, "w"))) | |
418 | { | |
419 | fprintf(stderr, "pidfile create failed: %s\n", strerror(errno)); | |
420 | exit(1); | |
421 | } | |
422 | fprintf(p, "%ld\n", (long)getpid()); | |
423 | fclose(p); | |
424 | } | |
425 | ||
c55a77db PH |
426 | /* This program handles only a fixed number of connections, in sequence. Before |
427 | waiting for the first connection, read the standard input, which contains the | |
428 | script of things to do. A line containing "++++" is treated as end of file. | |
429 | This is so that the Perl driving script doesn't have to close the pipe - | |
430 | because that would cause it to wait for this process, which it doesn't yet want | |
431 | to do. The driving script adds the "++++" automatically - it doesn't actually | |
7eb6c37c | 432 | appear in the test script. Within lines we interpret \xNN and \\ groups */ |
c55a77db | 433 | |
a719fce4 | 434 | while (fgets(CS buffer, sizeof(buffer), stdin) != NULL) |
c55a77db PH |
435 | { |
436 | line *next; | |
7eb6c37c | 437 | char * d; |
a719fce4 | 438 | int n = (int)strlen(CS buffer); |
7eb6c37c JH |
439 | |
440 | if (n > 1 && buffer[0] == '>' && buffer[1] == '>') | |
441 | linebuf = 0; | |
c55a77db PH |
442 | while (n > 0 && isspace(buffer[n-1])) n--; |
443 | buffer[n] = 0; | |
a719fce4 | 444 | if (strcmp(CS buffer, "++++") == 0) break; |
c55a77db PH |
445 | next = malloc(sizeof(line) + n); |
446 | next->next = NULL; | |
7eb6c37c JH |
447 | d = next->line; |
448 | { | |
449 | char * s = CS buffer; | |
450 | do | |
451 | { | |
452 | char ch; | |
453 | char cl = *s; | |
454 | if (cl == '\\' && (cl = *++s) == 'x') | |
455 | { | |
456 | if ((ch = *++s - '0') > 9 && (ch -= 'A'-'9'-1) > 15) ch -= 'a'-'A'; | |
457 | if ((cl = *++s - '0') > 9 && (cl -= 'A'-'9'-1) > 15) cl -= 'a'-'A'; | |
458 | cl |= ch << 4; | |
459 | } | |
460 | *d++ = cl; | |
461 | } | |
462 | while (*s++); | |
463 | } | |
464 | next->len = d - next->line - 1; | |
c55a77db PH |
465 | if (last == NULL) script = last = next; |
466 | else last->next = next; | |
467 | last = next; | |
468 | } | |
469 | ||
470 | fclose(stdin); | |
471 | ||
472 | /* SIGALRM handler crashes out */ | |
473 | ||
474 | signal(SIGALRM, sigalrm_handler); | |
475 | ||
476 | /* s points to the current place in the script */ | |
477 | ||
478 | s = script; | |
479 | ||
480 | for (count = 0; count < connection_count; count++) | |
481 | { | |
482 | alarm(timeout); | |
483 | if (port <= 0) | |
484 | { | |
485 | printf("Listening on %s ... ", sockname); | |
486 | fflush(stdout); | |
487 | accept_socket = accept(listen_socket[udn], | |
488 | (struct sockaddr *)&sockun_accepted, &sockun_len); | |
489 | } | |
490 | ||
491 | else | |
492 | { | |
493 | int lcount; | |
494 | int max_socket = 0; | |
495 | fd_set select_listen; | |
496 | ||
497 | printf("Listening on port %d ... ", port); | |
498 | fflush(stdout); | |
499 | ||
500 | FD_ZERO(&select_listen); | |
501 | for (i = 0; i < skn; i++) | |
502 | { | |
503 | if (listen_socket[i] >= 0) FD_SET(listen_socket[i], &select_listen); | |
504 | if (listen_socket[i] > max_socket) max_socket = listen_socket[i]; | |
505 | } | |
506 | ||
507 | lcount = select(max_socket + 1, &select_listen, NULL, NULL, NULL); | |
508 | if (lcount < 0) | |
509 | { | |
510 | printf("Select failed\n"); | |
511 | fflush(stdout); | |
512 | continue; | |
513 | } | |
514 | ||
515 | accept_socket = -1; | |
516 | for (i = 0; i < skn; i++) | |
517 | { | |
518 | if (listen_socket[i] > 0 && FD_ISSET(listen_socket[i], &select_listen)) | |
519 | { | |
520 | accept_socket = accept(listen_socket[i], | |
521 | (struct sockaddr *)&accepted, &len); | |
522 | FD_CLR(listen_socket[i], &select_listen); | |
523 | break; | |
524 | } | |
525 | } | |
526 | } | |
527 | alarm(0); | |
528 | ||
529 | if (accept_socket < 0) | |
530 | { | |
531 | printf("accept() failed: %s\n", strerror(errno)); | |
532 | exit(1); | |
533 | } | |
534 | ||
535 | out = fdopen(accept_socket, "w"); | |
536 | ||
537 | dup_accept_socket = dup(accept_socket); | |
538 | ||
539 | if (port > 0) | |
a719fce4 | 540 | printf("\nConnection request from [%s]\n", host_ntoa(&accepted, CS buffer)); |
c55a77db PH |
541 | else |
542 | { | |
543 | printf("\nConnection request\n"); | |
544 | ||
545 | /* Linux supports a feature for acquiring the peer's credentials, but it | |
546 | appears to be Linux-specific. This code is untested and unused, just | |
547 | saved here for reference. */ | |
548 | ||
549 | /**********-------------------- | |
550 | struct ucred cr; | |
551 | int cl=sizeof(cr); | |
552 | ||
553 | if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &cr, &cl)==0) { | |
554 | printf("Peer's pid=%d, uid=%d, gid=%d\n", | |
555 | cr.pid, cr.uid, cr.gid); | |
556 | --------------*****************/ | |
557 | } | |
558 | ||
559 | if (dup_accept_socket < 0) | |
560 | { | |
561 | printf("Couldn't dup socket descriptor\n"); | |
562 | printf("421 Connection refused: %s\n", strerror(errno)); | |
563 | fprintf(out, "421 Connection refused: %s\r\n", strerror(errno)); | |
564 | fclose(out); | |
565 | exit(2); | |
566 | } | |
567 | ||
568 | in = fdopen(dup_accept_socket, "r"); | |
569 | ||
570 | /* Loop for handling the conversation(s). For use in SMTP sessions, there are | |
571 | default rules for determining input and output lines: the latter start with | |
572 | digits. This means that the input looks like SMTP dialog. However, this | |
573 | doesn't work for other tests (e.g. ident tests) so we have explicit '<' and | |
574 | '>' flags for input and output as well as the defaults. */ | |
575 | ||
576 | for (; s != NULL; s = s->next) | |
577 | { | |
578 | char *ss = s->line; | |
579 | ||
580 | /* Output lines either start with '>' or a digit. In the '>' case we can | |
581 | fudge the sending of \r\n as required. Default is \r\n, ">>" send nothing, | |
582 | ">CR>" sends \r only, and ">LF>" sends \n only. We can also force a | |
583 | connection closedown by ">*eof". */ | |
584 | ||
585 | if (ss[0] == '>') | |
586 | { | |
587 | char *end = "\r\n"; | |
7eb6c37c JH |
588 | unsigned len = s->len; |
589 | printit(ss++, len--); | |
c55a77db PH |
590 | |
591 | if (strncmp(ss, "*eof", 4) == 0) | |
592 | { | |
593 | s = s->next; | |
594 | goto END_OFF; | |
595 | } | |
596 | ||
597 | if (*ss == '>') | |
7eb6c37c | 598 | { end = ""; ss++; len--; } |
c55a77db | 599 | else if (strncmp(ss, "CR>", 3) == 0) |
7eb6c37c | 600 | { end = "\r"; ss += 3; len -= 3; } |
c55a77db | 601 | else if (strncmp(ss, "LF>", 3) == 0) |
7eb6c37c | 602 | { end = "\n"; ss += 3; len -= 3; } |
c55a77db | 603 | |
7eb6c37c JH |
604 | fwrite(ss, 1, len, out); |
605 | if (*end) fprintf(out, end); | |
c55a77db PH |
606 | } |
607 | ||
608 | else if (isdigit((unsigned char)ss[0])) | |
609 | { | |
610 | printf("%s\n", ss); | |
611 | fprintf(out, "%s\r\n", ss); | |
612 | } | |
613 | ||
614 | /* If the script line starts with "*sleep" we just sleep for a while | |
615 | before continuing. */ | |
616 | ||
617 | else if (strncmp(ss, "*sleep ", 7) == 0) | |
618 | { | |
619 | int sleepfor = atoi(ss+7); | |
620 | printf("%s\n", ss); | |
621 | fflush(out); | |
622 | sleep(sleepfor); | |
623 | } | |
624 | ||
625 | /* Otherwise the script line is the start of an input line we are expecting | |
626 | from the client, or "*eof" indicating we expect the client to close the | |
627 | connection. Read command line or data lines; the latter are indicated | |
628 | by the expected line being just ".". If the line starts with '<', that | |
629 | doesn't form part of the expected input. (This allows for incoming data | |
7eb6c37c JH |
630 | starting with a digit.) If the line starts with '<<' we operate in |
631 | unbuffered rather than line mode and assume that a single read gets the | |
632 | entire message. */ | |
c55a77db PH |
633 | |
634 | else | |
635 | { | |
636 | int offset; | |
637 | int data = strcmp(ss, ".") == 0; | |
638 | ||
7eb6c37c JH |
639 | if (ss[0] != '<') |
640 | offset = 0; | |
641 | else | |
c55a77db PH |
642 | { |
643 | buffer[0] = '<'; | |
7eb6c37c JH |
644 | if (ss[1] != '<') |
645 | offset = 1; | |
646 | else | |
647 | { | |
648 | buffer[1] = '<'; | |
649 | offset = 2; | |
650 | } | |
c55a77db | 651 | } |
c55a77db PH |
652 | |
653 | fflush(out); | |
654 | ||
7eb6c37c JH |
655 | if (!linebuf) |
656 | { | |
657 | int n; | |
658 | char c; | |
659 | ||
660 | alarm(timeout); | |
661 | n = read(dup_accept_socket, CS buffer+offset, s->len - offset); | |
662 | if (n == 0) | |
663 | { | |
664 | printf("%sxpected EOF read from client\n", | |
665 | (strncmp(ss, "*eof", 4) == 0)? "E" : "Une"); | |
666 | s = s->next; | |
667 | goto END_OFF; | |
668 | } | |
669 | if (offset != 2) | |
670 | while (read(dup_accept_socket, &c, 1) == 1 && c != '\n') ; | |
671 | alarm(0); | |
672 | n += offset; | |
673 | ||
674 | printit(buffer, n); | |
675 | ||
676 | if (data) do | |
677 | { | |
678 | n = (read(dup_accept_socket, &c, 1) == 1 && c == '.'); | |
679 | while (c != '\n' && read(dup_accept_socket, &c, 1) == 1) | |
680 | ; | |
681 | } while (!n); | |
682 | else if (memcmp(ss, buffer, n) != 0) | |
683 | { | |
684 | printf("Comparison failed - bailing out\nExpected: "); | |
685 | printit(ss, n); | |
686 | break; | |
687 | } | |
688 | } | |
689 | else | |
690 | { | |
691 | for (;;) | |
692 | { | |
693 | int n; | |
694 | alarm(timeout); | |
695 | if (fgets(CS buffer+offset, sizeof(buffer)-offset, in) == NULL) | |
696 | { | |
697 | printf("%sxpected EOF read from client\n", | |
698 | (strncmp(ss, "*eof", 4) == 0)? "E" : "Une"); | |
699 | s = s->next; | |
700 | goto END_OFF; | |
701 | } | |
702 | alarm(0); | |
703 | n = (int)strlen(CS buffer); | |
704 | while (n > 0 && isspace(buffer[n-1])) n--; | |
705 | buffer[n] = 0; | |
706 | printf("%s\n", buffer); | |
707 | if (!data || strcmp(CS buffer, ".") == 0) break; | |
708 | } | |
709 | ||
710 | if (strncmp(ss, CS buffer, (int)strlen(ss)) != 0) | |
711 | { | |
712 | printf("Comparison failed - bailing out\n"); | |
713 | printf("Expected: %s\n", ss); | |
714 | break; | |
715 | } | |
716 | } | |
c55a77db PH |
717 | } |
718 | } | |
719 | ||
720 | END_OFF: | |
721 | fclose(in); | |
722 | fclose(out); | |
723 | } | |
724 | ||
725 | if (s == NULL) printf("End of script\n"); | |
726 | ||
727 | if (sockname != NULL) unlink(sockname); | |
728 | exit(0); | |
729 | } | |
730 | ||
731 | /* End of server.c */ |