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 */ | |
e5c9fb3c HSHR |
201 | if (argc > 1 && (!strcmp(argv[1], "--help") || !strcmp(argv[1], "-h"))) |
202 | { | |
203 | printf("Usage: %s [options]\n", argv[0]); | |
204 | puts("Options" | |
205 | "\n\t-d debug" | |
206 | "\n\t-i n n seconds initial delay" | |
207 | "\n\t-noipv4 disable ipv4" | |
208 | "\n\t-noipv6 disable ipv6" | |
209 | "\n\t-oP file write PID to file" | |
210 | "\n\t-t n n seconds timeout" | |
211 | ); | |
212 | exit(0); | |
213 | } | |
c55a77db PH |
214 | |
215 | while (na < argc && argv[na][0] == '-') | |
216 | { | |
217 | if (strcmp(argv[na], "-d") == 0) debug = 1; | |
218 | else if (strcmp(argv[na], "-t") == 0) timeout = atoi(argv[++na]); | |
8a512ed5 | 219 | else if (strcmp(argv[na], "-i") == 0) initial_pause = atoi(argv[++na]); |
c55a77db PH |
220 | else if (strcmp(argv[na], "-noipv4") == 0) use_ipv4 = 0; |
221 | else if (strcmp(argv[na], "-noipv6") == 0) use_ipv6 = 0; | |
f41e0506 | 222 | else if (strcmp(argv[na], "-oP") == 0) pidfile = argv[++na]; |
c55a77db PH |
223 | else |
224 | { | |
e5c9fb3c | 225 | printf("server: unknown option %s, try -h or --help\n", argv[na]); |
c55a77db PH |
226 | exit(1); |
227 | } | |
228 | na++; | |
229 | } | |
230 | ||
231 | if (!use_ipv4 && !use_ipv6) | |
232 | { | |
233 | printf("server: -noipv4 and -noipv6 cannot both be given\n"); | |
234 | exit(1); | |
235 | } | |
236 | ||
237 | if (na >= argc) | |
238 | { | |
239 | printf("server: no port number or socket name given\n"); | |
240 | exit(1); | |
241 | } | |
242 | ||
243 | if (argv[na][0] == '/') | |
244 | { | |
245 | sockname = argv[na]; | |
246 | unlink(sockname); /* in case left lying around */ | |
247 | } | |
248 | else port = atoi(argv[na]); | |
249 | na++; | |
250 | ||
251 | if (na < argc) connection_count = atoi(argv[na]); | |
252 | ||
253 | ||
8a512ed5 JH |
254 | /* Initial pause (before creating listen sockets */ |
255 | if (initial_pause > 0) | |
256 | { | |
257 | if (debug) | |
258 | printf("%d: Inital pause of %d seconds\n", time(NULL), initial_pause); | |
259 | else | |
260 | printf("Inital pause of %d seconds\n", initial_pause); | |
261 | while (initial_pause > 0) | |
262 | initial_pause = sleep(initial_pause); | |
263 | } | |
264 | ||
c55a77db PH |
265 | /* Create sockets */ |
266 | ||
267 | if (port == 0) /* Unix domain */ | |
268 | { | |
8a512ed5 | 269 | if (debug) printf("%d: Creating Unix domain socket\n", time(NULL)); |
c55a77db PH |
270 | listen_socket[udn] = socket(PF_UNIX, SOCK_STREAM, 0); |
271 | if (listen_socket[udn] < 0) | |
272 | { | |
273 | printf("Unix domain socket creation failed: %s\n", strerror(errno)); | |
274 | exit(1); | |
275 | } | |
276 | } | |
277 | else | |
278 | { | |
279 | #if HAVE_IPV6 | |
280 | if (use_ipv6) | |
281 | { | |
282 | if (debug) printf("Creating IPv6 socket\n"); | |
283 | listen_socket[v6n] = socket(AF_INET6, SOCK_STREAM, 0); | |
284 | if (listen_socket[v6n] < 0) | |
285 | { | |
286 | printf("IPv6 socket creation failed: %s\n", strerror(errno)); | |
287 | exit(1); | |
288 | } | |
289 | ||
290 | /* If this is an IPv6 wildcard socket, set IPV6_V6ONLY if that option is | |
291 | available. */ | |
292 | ||
293 | #ifdef IPV6_V6ONLY | |
294 | if (setsockopt(listen_socket[v6n], IPPROTO_IPV6, IPV6_V6ONLY, (char *)(&on), | |
295 | sizeof(on)) < 0) | |
296 | printf("Setting IPV6_V6ONLY on IPv6 wildcard " | |
297 | "socket failed (%s): carrying on without it\n", strerror(errno)); | |
298 | #endif /* IPV6_V6ONLY */ | |
299 | } | |
300 | #endif /* HAVE_IPV6 */ | |
301 | ||
302 | /* Create an IPv4 socket if required */ | |
303 | ||
304 | if (use_ipv4) | |
305 | { | |
306 | if (debug) printf("Creating IPv4 socket\n"); | |
307 | listen_socket[v4n] = socket(AF_INET, SOCK_STREAM, 0); | |
308 | if (listen_socket[v4n] < 0) | |
309 | { | |
310 | printf("IPv4 socket creation failed: %s\n", strerror(errno)); | |
311 | exit(1); | |
312 | } | |
313 | } | |
314 | } | |
315 | ||
316 | ||
317 | /* Set SO_REUSEADDR on the IP sockets so that the program can be restarted | |
318 | while a connection is being handled - this can happen as old connections lie | |
319 | around for a bit while crashed processes are tidied away. Without this, a | |
320 | connection will prevent reuse of the smtp port for listening. */ | |
321 | ||
322 | for (i = v6n; i <= v4n; i++) | |
323 | { | |
324 | if (listen_socket[i] >= 0 && | |
325 | setsockopt(listen_socket[i], SOL_SOCKET, SO_REUSEADDR, (char *)(&on), | |
326 | sizeof(on)) < 0) | |
327 | { | |
328 | printf("setting SO_REUSEADDR on socket failed: %s\n", strerror(errno)); | |
329 | exit(1); | |
330 | } | |
331 | } | |
332 | ||
333 | ||
334 | /* Now bind the sockets to the required port or path. If a path, ensure | |
335 | anyone can write to it. */ | |
336 | ||
337 | if (port == 0) | |
338 | { | |
339 | struct stat statbuf; | |
340 | sockun.sun_family = AF_UNIX; | |
341 | if (debug) printf("Binding Unix domain socket\n"); | |
342 | sprintf(sockun.sun_path, "%.*s", (int)(sizeof(sockun.sun_path)-1), sockname); | |
343 | if (bind(listen_socket[udn], (struct sockaddr *)&sockun, sizeof(sockun)) < 0) | |
344 | { | |
345 | printf("Unix domain socket bind() failed: %s\n", strerror(errno)); | |
346 | exit(1); | |
347 | } | |
348 | (void)stat(sockname, &statbuf); | |
349 | if (debug) printf("Setting Unix domain socket mode: %0x\n", | |
350 | statbuf.st_mode | 0777); | |
351 | if (chmod(sockname, statbuf.st_mode | 0777) < 0) | |
352 | { | |
353 | printf("Unix domain socket chmod() failed: %s\n", strerror(errno)); | |
354 | exit(1); | |
355 | } | |
356 | } | |
357 | ||
358 | else | |
359 | { | |
360 | for (i = 0; i < skn; i++) | |
361 | { | |
362 | if (listen_socket[i] < 0) continue; | |
363 | ||
364 | /* For an IPv6 listen, use an IPv6 socket */ | |
365 | ||
366 | #if HAVE_IPV6 | |
367 | if (i == v6n) | |
368 | { | |
369 | memset(&sin6, 0, sizeof(sin6)); | |
370 | sin6.sin6_family = AF_INET6; | |
371 | sin6.sin6_port = htons(port); | |
372 | sin6.sin6_addr = anyaddr6; | |
373 | if (bind(listen_socket[i], (struct sockaddr *)&sin6, sizeof(sin6)) < 0) | |
374 | { | |
375 | printf("IPv6 socket bind() failed: %s\n", strerror(errno)); | |
376 | exit(1); | |
377 | } | |
378 | } | |
379 | else | |
380 | #endif | |
381 | ||
382 | /* For an IPv4 bind, use an IPv4 socket, even in an IPv6 world. If an IPv4 | |
383 | bind fails EADDRINUSE after IPv6 success, carry on, because it means the | |
384 | IPv6 socket will handle IPv4 connections. */ | |
385 | ||
386 | { | |
387 | memset(&sin4, 0, sizeof(sin4)); | |
388 | sin4.sin_family = AF_INET; | |
389 | sin4.sin_addr.s_addr = (S_ADDR_TYPE)INADDR_ANY; | |
390 | sin4.sin_port = htons(port); | |
391 | if (bind(listen_socket[i], (struct sockaddr *)&sin4, sizeof(sin4)) < 0) | |
392 | { | |
393 | if (listen_socket[v6n] < 0 || errno != EADDRINUSE) | |
394 | { | |
395 | printf("IPv4 socket bind() failed: %s\n", strerror(errno)); | |
396 | exit(1); | |
397 | } | |
398 | else | |
399 | { | |
400 | close(listen_socket[i]); | |
401 | listen_socket[i] = -1; | |
402 | } | |
403 | } | |
404 | } | |
405 | } | |
406 | } | |
407 | ||
408 | ||
409 | /* Start listening. If IPv4 fails EADDRINUSE after IPv6 succeeds, ignore the | |
410 | error because it means that the IPv6 socket will handle IPv4 connections. Don't | |
411 | output anything, because it will mess up the test output, which will be | |
412 | different for systems that do this and those that don't. */ | |
413 | ||
414 | for (i = 0; i <= skn; i++) | |
415 | { | |
416 | if (listen_socket[i] >= 0 && listen(listen_socket[i], 5) < 0) | |
417 | { | |
418 | if (i != v4n || listen_socket[v6n] < 0 || errno != EADDRINUSE) | |
419 | { | |
420 | printf("listen() failed: %s\n", strerror(errno)); | |
421 | exit(1); | |
422 | } | |
423 | } | |
424 | } | |
425 | ||
426 | ||
f41e0506 JH |
427 | if (pidfile) |
428 | { | |
429 | FILE * p; | |
430 | if (!(p = fopen(pidfile, "w"))) | |
431 | { | |
432 | fprintf(stderr, "pidfile create failed: %s\n", strerror(errno)); | |
433 | exit(1); | |
434 | } | |
435 | fprintf(p, "%ld\n", (long)getpid()); | |
436 | fclose(p); | |
437 | } | |
438 | ||
c55a77db PH |
439 | /* This program handles only a fixed number of connections, in sequence. Before |
440 | waiting for the first connection, read the standard input, which contains the | |
441 | script of things to do. A line containing "++++" is treated as end of file. | |
442 | This is so that the Perl driving script doesn't have to close the pipe - | |
443 | because that would cause it to wait for this process, which it doesn't yet want | |
444 | to do. The driving script adds the "++++" automatically - it doesn't actually | |
7eb6c37c | 445 | appear in the test script. Within lines we interpret \xNN and \\ groups */ |
c55a77db | 446 | |
a719fce4 | 447 | while (fgets(CS buffer, sizeof(buffer), stdin) != NULL) |
c55a77db PH |
448 | { |
449 | line *next; | |
7eb6c37c | 450 | char * d; |
a719fce4 | 451 | int n = (int)strlen(CS buffer); |
7eb6c37c JH |
452 | |
453 | if (n > 1 && buffer[0] == '>' && buffer[1] == '>') | |
454 | linebuf = 0; | |
c55a77db PH |
455 | while (n > 0 && isspace(buffer[n-1])) n--; |
456 | buffer[n] = 0; | |
a719fce4 | 457 | if (strcmp(CS buffer, "++++") == 0) break; |
c55a77db PH |
458 | next = malloc(sizeof(line) + n); |
459 | next->next = NULL; | |
7eb6c37c JH |
460 | d = next->line; |
461 | { | |
462 | char * s = CS buffer; | |
463 | do | |
464 | { | |
465 | char ch; | |
466 | char cl = *s; | |
467 | if (cl == '\\' && (cl = *++s) == 'x') | |
468 | { | |
469 | if ((ch = *++s - '0') > 9 && (ch -= 'A'-'9'-1) > 15) ch -= 'a'-'A'; | |
470 | if ((cl = *++s - '0') > 9 && (cl -= 'A'-'9'-1) > 15) cl -= 'a'-'A'; | |
471 | cl |= ch << 4; | |
472 | } | |
473 | *d++ = cl; | |
474 | } | |
475 | while (*s++); | |
476 | } | |
477 | next->len = d - next->line - 1; | |
c55a77db PH |
478 | if (last == NULL) script = last = next; |
479 | else last->next = next; | |
480 | last = next; | |
481 | } | |
482 | ||
483 | fclose(stdin); | |
484 | ||
485 | /* SIGALRM handler crashes out */ | |
486 | ||
487 | signal(SIGALRM, sigalrm_handler); | |
488 | ||
489 | /* s points to the current place in the script */ | |
490 | ||
491 | s = script; | |
492 | ||
493 | for (count = 0; count < connection_count; count++) | |
494 | { | |
495 | alarm(timeout); | |
496 | if (port <= 0) | |
497 | { | |
498 | printf("Listening on %s ... ", sockname); | |
499 | fflush(stdout); | |
500 | accept_socket = accept(listen_socket[udn], | |
501 | (struct sockaddr *)&sockun_accepted, &sockun_len); | |
502 | } | |
503 | ||
504 | else | |
505 | { | |
506 | int lcount; | |
507 | int max_socket = 0; | |
508 | fd_set select_listen; | |
509 | ||
510 | printf("Listening on port %d ... ", port); | |
511 | fflush(stdout); | |
512 | ||
513 | FD_ZERO(&select_listen); | |
514 | for (i = 0; i < skn; i++) | |
515 | { | |
516 | if (listen_socket[i] >= 0) FD_SET(listen_socket[i], &select_listen); | |
517 | if (listen_socket[i] > max_socket) max_socket = listen_socket[i]; | |
518 | } | |
519 | ||
520 | lcount = select(max_socket + 1, &select_listen, NULL, NULL, NULL); | |
521 | if (lcount < 0) | |
522 | { | |
523 | printf("Select failed\n"); | |
524 | fflush(stdout); | |
525 | continue; | |
526 | } | |
527 | ||
528 | accept_socket = -1; | |
529 | for (i = 0; i < skn; i++) | |
530 | { | |
531 | if (listen_socket[i] > 0 && FD_ISSET(listen_socket[i], &select_listen)) | |
532 | { | |
533 | accept_socket = accept(listen_socket[i], | |
534 | (struct sockaddr *)&accepted, &len); | |
535 | FD_CLR(listen_socket[i], &select_listen); | |
536 | break; | |
537 | } | |
538 | } | |
539 | } | |
540 | alarm(0); | |
541 | ||
542 | if (accept_socket < 0) | |
543 | { | |
544 | printf("accept() failed: %s\n", strerror(errno)); | |
545 | exit(1); | |
546 | } | |
547 | ||
548 | out = fdopen(accept_socket, "w"); | |
549 | ||
550 | dup_accept_socket = dup(accept_socket); | |
551 | ||
552 | if (port > 0) | |
a719fce4 | 553 | printf("\nConnection request from [%s]\n", host_ntoa(&accepted, CS buffer)); |
c55a77db PH |
554 | else |
555 | { | |
556 | printf("\nConnection request\n"); | |
557 | ||
558 | /* Linux supports a feature for acquiring the peer's credentials, but it | |
559 | appears to be Linux-specific. This code is untested and unused, just | |
560 | saved here for reference. */ | |
561 | ||
562 | /**********-------------------- | |
563 | struct ucred cr; | |
564 | int cl=sizeof(cr); | |
565 | ||
566 | if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &cr, &cl)==0) { | |
567 | printf("Peer's pid=%d, uid=%d, gid=%d\n", | |
568 | cr.pid, cr.uid, cr.gid); | |
569 | --------------*****************/ | |
570 | } | |
571 | ||
572 | if (dup_accept_socket < 0) | |
573 | { | |
574 | printf("Couldn't dup socket descriptor\n"); | |
575 | printf("421 Connection refused: %s\n", strerror(errno)); | |
576 | fprintf(out, "421 Connection refused: %s\r\n", strerror(errno)); | |
577 | fclose(out); | |
578 | exit(2); | |
579 | } | |
580 | ||
581 | in = fdopen(dup_accept_socket, "r"); | |
582 | ||
583 | /* Loop for handling the conversation(s). For use in SMTP sessions, there are | |
584 | default rules for determining input and output lines: the latter start with | |
585 | digits. This means that the input looks like SMTP dialog. However, this | |
586 | doesn't work for other tests (e.g. ident tests) so we have explicit '<' and | |
587 | '>' flags for input and output as well as the defaults. */ | |
588 | ||
589 | for (; s != NULL; s = s->next) | |
590 | { | |
591 | char *ss = s->line; | |
592 | ||
593 | /* Output lines either start with '>' or a digit. In the '>' case we can | |
594 | fudge the sending of \r\n as required. Default is \r\n, ">>" send nothing, | |
595 | ">CR>" sends \r only, and ">LF>" sends \n only. We can also force a | |
596 | connection closedown by ">*eof". */ | |
597 | ||
598 | if (ss[0] == '>') | |
599 | { | |
600 | char *end = "\r\n"; | |
7eb6c37c JH |
601 | unsigned len = s->len; |
602 | printit(ss++, len--); | |
c55a77db PH |
603 | |
604 | if (strncmp(ss, "*eof", 4) == 0) | |
605 | { | |
606 | s = s->next; | |
607 | goto END_OFF; | |
608 | } | |
609 | ||
610 | if (*ss == '>') | |
7eb6c37c | 611 | { end = ""; ss++; len--; } |
c55a77db | 612 | else if (strncmp(ss, "CR>", 3) == 0) |
7eb6c37c | 613 | { end = "\r"; ss += 3; len -= 3; } |
c55a77db | 614 | else if (strncmp(ss, "LF>", 3) == 0) |
7eb6c37c | 615 | { end = "\n"; ss += 3; len -= 3; } |
c55a77db | 616 | |
7eb6c37c JH |
617 | fwrite(ss, 1, len, out); |
618 | if (*end) fprintf(out, end); | |
c55a77db PH |
619 | } |
620 | ||
621 | else if (isdigit((unsigned char)ss[0])) | |
622 | { | |
623 | printf("%s\n", ss); | |
624 | fprintf(out, "%s\r\n", ss); | |
625 | } | |
626 | ||
627 | /* If the script line starts with "*sleep" we just sleep for a while | |
628 | before continuing. */ | |
629 | ||
630 | else if (strncmp(ss, "*sleep ", 7) == 0) | |
631 | { | |
632 | int sleepfor = atoi(ss+7); | |
633 | printf("%s\n", ss); | |
634 | fflush(out); | |
635 | sleep(sleepfor); | |
636 | } | |
637 | ||
638 | /* Otherwise the script line is the start of an input line we are expecting | |
639 | from the client, or "*eof" indicating we expect the client to close the | |
640 | connection. Read command line or data lines; the latter are indicated | |
641 | by the expected line being just ".". If the line starts with '<', that | |
642 | doesn't form part of the expected input. (This allows for incoming data | |
7eb6c37c JH |
643 | starting with a digit.) If the line starts with '<<' we operate in |
644 | unbuffered rather than line mode and assume that a single read gets the | |
645 | entire message. */ | |
c55a77db PH |
646 | |
647 | else | |
648 | { | |
649 | int offset; | |
650 | int data = strcmp(ss, ".") == 0; | |
651 | ||
7eb6c37c JH |
652 | if (ss[0] != '<') |
653 | offset = 0; | |
654 | else | |
c55a77db PH |
655 | { |
656 | buffer[0] = '<'; | |
7eb6c37c JH |
657 | if (ss[1] != '<') |
658 | offset = 1; | |
659 | else | |
660 | { | |
661 | buffer[1] = '<'; | |
662 | offset = 2; | |
663 | } | |
c55a77db | 664 | } |
c55a77db PH |
665 | |
666 | fflush(out); | |
667 | ||
7eb6c37c JH |
668 | if (!linebuf) |
669 | { | |
670 | int n; | |
671 | char c; | |
672 | ||
673 | alarm(timeout); | |
674 | n = read(dup_accept_socket, CS buffer+offset, s->len - offset); | |
675 | if (n == 0) | |
676 | { | |
677 | printf("%sxpected EOF read from client\n", | |
678 | (strncmp(ss, "*eof", 4) == 0)? "E" : "Une"); | |
679 | s = s->next; | |
680 | goto END_OFF; | |
681 | } | |
682 | if (offset != 2) | |
683 | while (read(dup_accept_socket, &c, 1) == 1 && c != '\n') ; | |
684 | alarm(0); | |
685 | n += offset; | |
686 | ||
687 | printit(buffer, n); | |
688 | ||
689 | if (data) do | |
690 | { | |
691 | n = (read(dup_accept_socket, &c, 1) == 1 && c == '.'); | |
692 | while (c != '\n' && read(dup_accept_socket, &c, 1) == 1) | |
693 | ; | |
694 | } while (!n); | |
695 | else if (memcmp(ss, buffer, n) != 0) | |
696 | { | |
697 | printf("Comparison failed - bailing out\nExpected: "); | |
698 | printit(ss, n); | |
699 | break; | |
700 | } | |
701 | } | |
702 | else | |
703 | { | |
704 | for (;;) | |
705 | { | |
706 | int n; | |
707 | alarm(timeout); | |
708 | if (fgets(CS buffer+offset, sizeof(buffer)-offset, in) == NULL) | |
709 | { | |
710 | printf("%sxpected EOF read from client\n", | |
711 | (strncmp(ss, "*eof", 4) == 0)? "E" : "Une"); | |
712 | s = s->next; | |
713 | goto END_OFF; | |
714 | } | |
715 | alarm(0); | |
716 | n = (int)strlen(CS buffer); | |
717 | while (n > 0 && isspace(buffer[n-1])) n--; | |
718 | buffer[n] = 0; | |
719 | printf("%s\n", buffer); | |
720 | if (!data || strcmp(CS buffer, ".") == 0) break; | |
721 | } | |
722 | ||
723 | if (strncmp(ss, CS buffer, (int)strlen(ss)) != 0) | |
724 | { | |
725 | printf("Comparison failed - bailing out\n"); | |
726 | printf("Expected: %s\n", ss); | |
727 | break; | |
728 | } | |
729 | } | |
c55a77db PH |
730 | } |
731 | } | |
732 | ||
733 | END_OFF: | |
734 | fclose(in); | |
735 | fclose(out); | |
736 | } | |
737 | ||
738 | if (s == NULL) printf("End of script\n"); | |
739 | ||
740 | if (sockname != NULL) unlink(sockname); | |
741 | exit(0); | |
742 | } | |
743 | ||
744 | /* End of server.c */ |