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; |
c55a77db PH |
176 | |
177 | char *sockname = NULL; | |
178 | unsigned char buffer[10240]; | |
179 | ||
180 | struct sockaddr_un sockun; /* don't use "sun" */ | |
181 | struct sockaddr_un sockun_accepted; | |
182 | int sockun_len = sizeof(sockun_accepted); | |
183 | ||
184 | #if HAVE_IPV6 | |
185 | struct sockaddr_in6 sin6; | |
186 | struct sockaddr_in6 accepted; | |
187 | struct in6_addr anyaddr6 = IN6ADDR_ANY_INIT ; | |
188 | #else | |
189 | struct sockaddr_in accepted; | |
190 | #endif | |
191 | ||
192 | /* Always need an IPv4 structure */ | |
193 | ||
194 | struct sockaddr_in sin4; | |
195 | ||
196 | int len = sizeof(accepted); | |
197 | ||
198 | ||
199 | /* Sort out the arguments */ | |
200 | ||
201 | while (na < argc && argv[na][0] == '-') | |
202 | { | |
203 | if (strcmp(argv[na], "-d") == 0) debug = 1; | |
204 | else if (strcmp(argv[na], "-t") == 0) timeout = atoi(argv[++na]); | |
8a512ed5 | 205 | else if (strcmp(argv[na], "-i") == 0) initial_pause = atoi(argv[++na]); |
c55a77db PH |
206 | else if (strcmp(argv[na], "-noipv4") == 0) use_ipv4 = 0; |
207 | else if (strcmp(argv[na], "-noipv6") == 0) use_ipv6 = 0; | |
208 | else | |
209 | { | |
210 | printf("server: unknown option %s\n", argv[na]); | |
211 | exit(1); | |
212 | } | |
213 | na++; | |
214 | } | |
215 | ||
216 | if (!use_ipv4 && !use_ipv6) | |
217 | { | |
218 | printf("server: -noipv4 and -noipv6 cannot both be given\n"); | |
219 | exit(1); | |
220 | } | |
221 | ||
222 | if (na >= argc) | |
223 | { | |
224 | printf("server: no port number or socket name given\n"); | |
225 | exit(1); | |
226 | } | |
227 | ||
228 | if (argv[na][0] == '/') | |
229 | { | |
230 | sockname = argv[na]; | |
231 | unlink(sockname); /* in case left lying around */ | |
232 | } | |
233 | else port = atoi(argv[na]); | |
234 | na++; | |
235 | ||
236 | if (na < argc) connection_count = atoi(argv[na]); | |
237 | ||
238 | ||
8a512ed5 JH |
239 | /* Initial pause (before creating listen sockets */ |
240 | if (initial_pause > 0) | |
241 | { | |
242 | if (debug) | |
243 | printf("%d: Inital pause of %d seconds\n", time(NULL), initial_pause); | |
244 | else | |
245 | printf("Inital pause of %d seconds\n", initial_pause); | |
246 | while (initial_pause > 0) | |
247 | initial_pause = sleep(initial_pause); | |
248 | } | |
249 | ||
c55a77db PH |
250 | /* Create sockets */ |
251 | ||
252 | if (port == 0) /* Unix domain */ | |
253 | { | |
8a512ed5 | 254 | if (debug) printf("%d: Creating Unix domain socket\n", time(NULL)); |
c55a77db PH |
255 | listen_socket[udn] = socket(PF_UNIX, SOCK_STREAM, 0); |
256 | if (listen_socket[udn] < 0) | |
257 | { | |
258 | printf("Unix domain socket creation failed: %s\n", strerror(errno)); | |
259 | exit(1); | |
260 | } | |
261 | } | |
262 | else | |
263 | { | |
264 | #if HAVE_IPV6 | |
265 | if (use_ipv6) | |
266 | { | |
267 | if (debug) printf("Creating IPv6 socket\n"); | |
268 | listen_socket[v6n] = socket(AF_INET6, SOCK_STREAM, 0); | |
269 | if (listen_socket[v6n] < 0) | |
270 | { | |
271 | printf("IPv6 socket creation failed: %s\n", strerror(errno)); | |
272 | exit(1); | |
273 | } | |
274 | ||
275 | /* If this is an IPv6 wildcard socket, set IPV6_V6ONLY if that option is | |
276 | available. */ | |
277 | ||
278 | #ifdef IPV6_V6ONLY | |
279 | if (setsockopt(listen_socket[v6n], IPPROTO_IPV6, IPV6_V6ONLY, (char *)(&on), | |
280 | sizeof(on)) < 0) | |
281 | printf("Setting IPV6_V6ONLY on IPv6 wildcard " | |
282 | "socket failed (%s): carrying on without it\n", strerror(errno)); | |
283 | #endif /* IPV6_V6ONLY */ | |
284 | } | |
285 | #endif /* HAVE_IPV6 */ | |
286 | ||
287 | /* Create an IPv4 socket if required */ | |
288 | ||
289 | if (use_ipv4) | |
290 | { | |
291 | if (debug) printf("Creating IPv4 socket\n"); | |
292 | listen_socket[v4n] = socket(AF_INET, SOCK_STREAM, 0); | |
293 | if (listen_socket[v4n] < 0) | |
294 | { | |
295 | printf("IPv4 socket creation failed: %s\n", strerror(errno)); | |
296 | exit(1); | |
297 | } | |
298 | } | |
299 | } | |
300 | ||
301 | ||
302 | /* Set SO_REUSEADDR on the IP sockets so that the program can be restarted | |
303 | while a connection is being handled - this can happen as old connections lie | |
304 | around for a bit while crashed processes are tidied away. Without this, a | |
305 | connection will prevent reuse of the smtp port for listening. */ | |
306 | ||
307 | for (i = v6n; i <= v4n; i++) | |
308 | { | |
309 | if (listen_socket[i] >= 0 && | |
310 | setsockopt(listen_socket[i], SOL_SOCKET, SO_REUSEADDR, (char *)(&on), | |
311 | sizeof(on)) < 0) | |
312 | { | |
313 | printf("setting SO_REUSEADDR on socket failed: %s\n", strerror(errno)); | |
314 | exit(1); | |
315 | } | |
316 | } | |
317 | ||
318 | ||
319 | /* Now bind the sockets to the required port or path. If a path, ensure | |
320 | anyone can write to it. */ | |
321 | ||
322 | if (port == 0) | |
323 | { | |
324 | struct stat statbuf; | |
325 | sockun.sun_family = AF_UNIX; | |
326 | if (debug) printf("Binding Unix domain socket\n"); | |
327 | sprintf(sockun.sun_path, "%.*s", (int)(sizeof(sockun.sun_path)-1), sockname); | |
328 | if (bind(listen_socket[udn], (struct sockaddr *)&sockun, sizeof(sockun)) < 0) | |
329 | { | |
330 | printf("Unix domain socket bind() failed: %s\n", strerror(errno)); | |
331 | exit(1); | |
332 | } | |
333 | (void)stat(sockname, &statbuf); | |
334 | if (debug) printf("Setting Unix domain socket mode: %0x\n", | |
335 | statbuf.st_mode | 0777); | |
336 | if (chmod(sockname, statbuf.st_mode | 0777) < 0) | |
337 | { | |
338 | printf("Unix domain socket chmod() failed: %s\n", strerror(errno)); | |
339 | exit(1); | |
340 | } | |
341 | } | |
342 | ||
343 | else | |
344 | { | |
345 | for (i = 0; i < skn; i++) | |
346 | { | |
347 | if (listen_socket[i] < 0) continue; | |
348 | ||
349 | /* For an IPv6 listen, use an IPv6 socket */ | |
350 | ||
351 | #if HAVE_IPV6 | |
352 | if (i == v6n) | |
353 | { | |
354 | memset(&sin6, 0, sizeof(sin6)); | |
355 | sin6.sin6_family = AF_INET6; | |
356 | sin6.sin6_port = htons(port); | |
357 | sin6.sin6_addr = anyaddr6; | |
358 | if (bind(listen_socket[i], (struct sockaddr *)&sin6, sizeof(sin6)) < 0) | |
359 | { | |
360 | printf("IPv6 socket bind() failed: %s\n", strerror(errno)); | |
361 | exit(1); | |
362 | } | |
363 | } | |
364 | else | |
365 | #endif | |
366 | ||
367 | /* For an IPv4 bind, use an IPv4 socket, even in an IPv6 world. If an IPv4 | |
368 | bind fails EADDRINUSE after IPv6 success, carry on, because it means the | |
369 | IPv6 socket will handle IPv4 connections. */ | |
370 | ||
371 | { | |
372 | memset(&sin4, 0, sizeof(sin4)); | |
373 | sin4.sin_family = AF_INET; | |
374 | sin4.sin_addr.s_addr = (S_ADDR_TYPE)INADDR_ANY; | |
375 | sin4.sin_port = htons(port); | |
376 | if (bind(listen_socket[i], (struct sockaddr *)&sin4, sizeof(sin4)) < 0) | |
377 | { | |
378 | if (listen_socket[v6n] < 0 || errno != EADDRINUSE) | |
379 | { | |
380 | printf("IPv4 socket bind() failed: %s\n", strerror(errno)); | |
381 | exit(1); | |
382 | } | |
383 | else | |
384 | { | |
385 | close(listen_socket[i]); | |
386 | listen_socket[i] = -1; | |
387 | } | |
388 | } | |
389 | } | |
390 | } | |
391 | } | |
392 | ||
393 | ||
394 | /* Start listening. If IPv4 fails EADDRINUSE after IPv6 succeeds, ignore the | |
395 | error because it means that the IPv6 socket will handle IPv4 connections. Don't | |
396 | output anything, because it will mess up the test output, which will be | |
397 | different for systems that do this and those that don't. */ | |
398 | ||
399 | for (i = 0; i <= skn; i++) | |
400 | { | |
401 | if (listen_socket[i] >= 0 && listen(listen_socket[i], 5) < 0) | |
402 | { | |
403 | if (i != v4n || listen_socket[v6n] < 0 || errno != EADDRINUSE) | |
404 | { | |
405 | printf("listen() failed: %s\n", strerror(errno)); | |
406 | exit(1); | |
407 | } | |
408 | } | |
409 | } | |
410 | ||
411 | ||
412 | /* This program handles only a fixed number of connections, in sequence. Before | |
413 | waiting for the first connection, read the standard input, which contains the | |
414 | script of things to do. A line containing "++++" is treated as end of file. | |
415 | This is so that the Perl driving script doesn't have to close the pipe - | |
416 | because that would cause it to wait for this process, which it doesn't yet want | |
417 | to do. The driving script adds the "++++" automatically - it doesn't actually | |
7eb6c37c | 418 | appear in the test script. Within lines we interpret \xNN and \\ groups */ |
c55a77db | 419 | |
a719fce4 | 420 | while (fgets(CS buffer, sizeof(buffer), stdin) != NULL) |
c55a77db PH |
421 | { |
422 | line *next; | |
7eb6c37c | 423 | char * d; |
a719fce4 | 424 | int n = (int)strlen(CS buffer); |
7eb6c37c JH |
425 | |
426 | if (n > 1 && buffer[0] == '>' && buffer[1] == '>') | |
427 | linebuf = 0; | |
c55a77db PH |
428 | while (n > 0 && isspace(buffer[n-1])) n--; |
429 | buffer[n] = 0; | |
a719fce4 | 430 | if (strcmp(CS buffer, "++++") == 0) break; |
c55a77db PH |
431 | next = malloc(sizeof(line) + n); |
432 | next->next = NULL; | |
7eb6c37c JH |
433 | d = next->line; |
434 | { | |
435 | char * s = CS buffer; | |
436 | do | |
437 | { | |
438 | char ch; | |
439 | char cl = *s; | |
440 | if (cl == '\\' && (cl = *++s) == 'x') | |
441 | { | |
442 | if ((ch = *++s - '0') > 9 && (ch -= 'A'-'9'-1) > 15) ch -= 'a'-'A'; | |
443 | if ((cl = *++s - '0') > 9 && (cl -= 'A'-'9'-1) > 15) cl -= 'a'-'A'; | |
444 | cl |= ch << 4; | |
445 | } | |
446 | *d++ = cl; | |
447 | } | |
448 | while (*s++); | |
449 | } | |
450 | next->len = d - next->line - 1; | |
c55a77db PH |
451 | if (last == NULL) script = last = next; |
452 | else last->next = next; | |
453 | last = next; | |
454 | } | |
455 | ||
456 | fclose(stdin); | |
457 | ||
458 | /* SIGALRM handler crashes out */ | |
459 | ||
460 | signal(SIGALRM, sigalrm_handler); | |
461 | ||
462 | /* s points to the current place in the script */ | |
463 | ||
464 | s = script; | |
465 | ||
466 | for (count = 0; count < connection_count; count++) | |
467 | { | |
468 | alarm(timeout); | |
469 | if (port <= 0) | |
470 | { | |
471 | printf("Listening on %s ... ", sockname); | |
472 | fflush(stdout); | |
473 | accept_socket = accept(listen_socket[udn], | |
474 | (struct sockaddr *)&sockun_accepted, &sockun_len); | |
475 | } | |
476 | ||
477 | else | |
478 | { | |
479 | int lcount; | |
480 | int max_socket = 0; | |
481 | fd_set select_listen; | |
482 | ||
483 | printf("Listening on port %d ... ", port); | |
484 | fflush(stdout); | |
485 | ||
486 | FD_ZERO(&select_listen); | |
487 | for (i = 0; i < skn; i++) | |
488 | { | |
489 | if (listen_socket[i] >= 0) FD_SET(listen_socket[i], &select_listen); | |
490 | if (listen_socket[i] > max_socket) max_socket = listen_socket[i]; | |
491 | } | |
492 | ||
493 | lcount = select(max_socket + 1, &select_listen, NULL, NULL, NULL); | |
494 | if (lcount < 0) | |
495 | { | |
496 | printf("Select failed\n"); | |
497 | fflush(stdout); | |
498 | continue; | |
499 | } | |
500 | ||
501 | accept_socket = -1; | |
502 | for (i = 0; i < skn; i++) | |
503 | { | |
504 | if (listen_socket[i] > 0 && FD_ISSET(listen_socket[i], &select_listen)) | |
505 | { | |
506 | accept_socket = accept(listen_socket[i], | |
507 | (struct sockaddr *)&accepted, &len); | |
508 | FD_CLR(listen_socket[i], &select_listen); | |
509 | break; | |
510 | } | |
511 | } | |
512 | } | |
513 | alarm(0); | |
514 | ||
515 | if (accept_socket < 0) | |
516 | { | |
517 | printf("accept() failed: %s\n", strerror(errno)); | |
518 | exit(1); | |
519 | } | |
520 | ||
521 | out = fdopen(accept_socket, "w"); | |
522 | ||
523 | dup_accept_socket = dup(accept_socket); | |
524 | ||
525 | if (port > 0) | |
a719fce4 | 526 | printf("\nConnection request from [%s]\n", host_ntoa(&accepted, CS buffer)); |
c55a77db PH |
527 | else |
528 | { | |
529 | printf("\nConnection request\n"); | |
530 | ||
531 | /* Linux supports a feature for acquiring the peer's credentials, but it | |
532 | appears to be Linux-specific. This code is untested and unused, just | |
533 | saved here for reference. */ | |
534 | ||
535 | /**********-------------------- | |
536 | struct ucred cr; | |
537 | int cl=sizeof(cr); | |
538 | ||
539 | if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &cr, &cl)==0) { | |
540 | printf("Peer's pid=%d, uid=%d, gid=%d\n", | |
541 | cr.pid, cr.uid, cr.gid); | |
542 | --------------*****************/ | |
543 | } | |
544 | ||
545 | if (dup_accept_socket < 0) | |
546 | { | |
547 | printf("Couldn't dup socket descriptor\n"); | |
548 | printf("421 Connection refused: %s\n", strerror(errno)); | |
549 | fprintf(out, "421 Connection refused: %s\r\n", strerror(errno)); | |
550 | fclose(out); | |
551 | exit(2); | |
552 | } | |
553 | ||
554 | in = fdopen(dup_accept_socket, "r"); | |
555 | ||
556 | /* Loop for handling the conversation(s). For use in SMTP sessions, there are | |
557 | default rules for determining input and output lines: the latter start with | |
558 | digits. This means that the input looks like SMTP dialog. However, this | |
559 | doesn't work for other tests (e.g. ident tests) so we have explicit '<' and | |
560 | '>' flags for input and output as well as the defaults. */ | |
561 | ||
562 | for (; s != NULL; s = s->next) | |
563 | { | |
564 | char *ss = s->line; | |
565 | ||
566 | /* Output lines either start with '>' or a digit. In the '>' case we can | |
567 | fudge the sending of \r\n as required. Default is \r\n, ">>" send nothing, | |
568 | ">CR>" sends \r only, and ">LF>" sends \n only. We can also force a | |
569 | connection closedown by ">*eof". */ | |
570 | ||
571 | if (ss[0] == '>') | |
572 | { | |
573 | char *end = "\r\n"; | |
7eb6c37c JH |
574 | unsigned len = s->len; |
575 | printit(ss++, len--); | |
c55a77db PH |
576 | |
577 | if (strncmp(ss, "*eof", 4) == 0) | |
578 | { | |
579 | s = s->next; | |
580 | goto END_OFF; | |
581 | } | |
582 | ||
583 | if (*ss == '>') | |
7eb6c37c | 584 | { end = ""; ss++; len--; } |
c55a77db | 585 | else if (strncmp(ss, "CR>", 3) == 0) |
7eb6c37c | 586 | { end = "\r"; ss += 3; len -= 3; } |
c55a77db | 587 | else if (strncmp(ss, "LF>", 3) == 0) |
7eb6c37c | 588 | { end = "\n"; ss += 3; len -= 3; } |
c55a77db | 589 | |
7eb6c37c JH |
590 | fwrite(ss, 1, len, out); |
591 | if (*end) fprintf(out, end); | |
c55a77db PH |
592 | } |
593 | ||
594 | else if (isdigit((unsigned char)ss[0])) | |
595 | { | |
596 | printf("%s\n", ss); | |
597 | fprintf(out, "%s\r\n", ss); | |
598 | } | |
599 | ||
600 | /* If the script line starts with "*sleep" we just sleep for a while | |
601 | before continuing. */ | |
602 | ||
603 | else if (strncmp(ss, "*sleep ", 7) == 0) | |
604 | { | |
605 | int sleepfor = atoi(ss+7); | |
606 | printf("%s\n", ss); | |
607 | fflush(out); | |
608 | sleep(sleepfor); | |
609 | } | |
610 | ||
611 | /* Otherwise the script line is the start of an input line we are expecting | |
612 | from the client, or "*eof" indicating we expect the client to close the | |
613 | connection. Read command line or data lines; the latter are indicated | |
614 | by the expected line being just ".". If the line starts with '<', that | |
615 | doesn't form part of the expected input. (This allows for incoming data | |
7eb6c37c JH |
616 | starting with a digit.) If the line starts with '<<' we operate in |
617 | unbuffered rather than line mode and assume that a single read gets the | |
618 | entire message. */ | |
c55a77db PH |
619 | |
620 | else | |
621 | { | |
622 | int offset; | |
623 | int data = strcmp(ss, ".") == 0; | |
624 | ||
7eb6c37c JH |
625 | if (ss[0] != '<') |
626 | offset = 0; | |
627 | else | |
c55a77db PH |
628 | { |
629 | buffer[0] = '<'; | |
7eb6c37c JH |
630 | if (ss[1] != '<') |
631 | offset = 1; | |
632 | else | |
633 | { | |
634 | buffer[1] = '<'; | |
635 | offset = 2; | |
636 | } | |
c55a77db | 637 | } |
c55a77db PH |
638 | |
639 | fflush(out); | |
640 | ||
7eb6c37c JH |
641 | if (!linebuf) |
642 | { | |
643 | int n; | |
644 | char c; | |
645 | ||
646 | alarm(timeout); | |
647 | n = read(dup_accept_socket, CS buffer+offset, s->len - offset); | |
648 | if (n == 0) | |
649 | { | |
650 | printf("%sxpected EOF read from client\n", | |
651 | (strncmp(ss, "*eof", 4) == 0)? "E" : "Une"); | |
652 | s = s->next; | |
653 | goto END_OFF; | |
654 | } | |
655 | if (offset != 2) | |
656 | while (read(dup_accept_socket, &c, 1) == 1 && c != '\n') ; | |
657 | alarm(0); | |
658 | n += offset; | |
659 | ||
660 | printit(buffer, n); | |
661 | ||
662 | if (data) do | |
663 | { | |
664 | n = (read(dup_accept_socket, &c, 1) == 1 && c == '.'); | |
665 | while (c != '\n' && read(dup_accept_socket, &c, 1) == 1) | |
666 | ; | |
667 | } while (!n); | |
668 | else if (memcmp(ss, buffer, n) != 0) | |
669 | { | |
670 | printf("Comparison failed - bailing out\nExpected: "); | |
671 | printit(ss, n); | |
672 | break; | |
673 | } | |
674 | } | |
675 | else | |
676 | { | |
677 | for (;;) | |
678 | { | |
679 | int n; | |
680 | alarm(timeout); | |
681 | if (fgets(CS buffer+offset, sizeof(buffer)-offset, in) == NULL) | |
682 | { | |
683 | printf("%sxpected EOF read from client\n", | |
684 | (strncmp(ss, "*eof", 4) == 0)? "E" : "Une"); | |
685 | s = s->next; | |
686 | goto END_OFF; | |
687 | } | |
688 | alarm(0); | |
689 | n = (int)strlen(CS buffer); | |
690 | while (n > 0 && isspace(buffer[n-1])) n--; | |
691 | buffer[n] = 0; | |
692 | printf("%s\n", buffer); | |
693 | if (!data || strcmp(CS buffer, ".") == 0) break; | |
694 | } | |
695 | ||
696 | if (strncmp(ss, CS buffer, (int)strlen(ss)) != 0) | |
697 | { | |
698 | printf("Comparison failed - bailing out\n"); | |
699 | printf("Expected: %s\n", ss); | |
700 | break; | |
701 | } | |
702 | } | |
c55a77db PH |
703 | } |
704 | } | |
705 | ||
706 | END_OFF: | |
707 | fclose(in); | |
708 | fclose(out); | |
709 | } | |
710 | ||
711 | if (s == NULL) printf("End of script\n"); | |
712 | ||
713 | if (sockname != NULL) unlink(sockname); | |
714 | exit(0); | |
715 | } | |
716 | ||
717 | /* End of server.c */ |