Commit | Line | Data |
---|---|---|
edf71f48 | 1 | /* |
3371ac92 | 2 | * Copyright (c) 1985, 1989 Regents of the University of California. |
11c5f0a3 KB |
3 | * All rights reserved. |
4 | * | |
1343342a | 5 | * %sccs.include.redist.c% |
edf71f48 DF |
6 | */ |
7 | ||
8 | #ifndef lint | |
9 | char copyright[] = | |
3371ac92 | 10 | "@(#) Copyright (c) 1985, 1989 Regents of the University of California.\n\ |
edf71f48 | 11 | All rights reserved.\n"; |
11c5f0a3 | 12 | #endif /* not lint */ |
edf71f48 | 13 | |
ba5bf9f5 | 14 | #ifndef lint |
1343342a | 15 | static char sccsid[] = "@(#)main.c 5.16 (Berkeley) %G%"; |
11c5f0a3 | 16 | #endif /* not lint */ |
ba5bf9f5 SL |
17 | |
18 | /* | |
19 | * FTP User Program -- Command Interface. | |
20 | */ | |
9069f68e | 21 | #include "ftp_var.h" |
ba5bf9f5 SL |
22 | #include <sys/socket.h> |
23 | #include <sys/ioctl.h> | |
04480325 | 24 | #include <sys/types.h> |
ba5bf9f5 | 25 | |
62c4a390 SL |
26 | #include <arpa/ftp.h> |
27 | ||
ba5bf9f5 SL |
28 | #include <signal.h> |
29 | #include <stdio.h> | |
30 | #include <errno.h> | |
31 | #include <ctype.h> | |
32 | #include <netdb.h> | |
3b645f65 | 33 | #include <pwd.h> |
ba5bf9f5 | 34 | |
04480325 | 35 | uid_t getuid(); |
029aa654 RA |
36 | sig_t intr(); |
37 | sig_t lostpeer(); | |
3b645f65 | 38 | extern char *home; |
14433a73 | 39 | char *getlogin(); |
ba5bf9f5 SL |
40 | |
41 | main(argc, argv) | |
42 | char *argv[]; | |
43 | { | |
44 | register char *cp; | |
45 | int top; | |
14433a73 | 46 | struct passwd *pw = NULL; |
3b645f65 | 47 | char homedir[MAXPATHLEN]; |
ba5bf9f5 SL |
48 | |
49 | sp = getservbyname("ftp", "tcp"); | |
50 | if (sp == 0) { | |
51 | fprintf(stderr, "ftp: ftp/tcp: unknown service\n"); | |
52 | exit(1); | |
53 | } | |
a16b8edf | 54 | doglob = 1; |
5ac6fc46 | 55 | interactive = 1; |
a16b8edf | 56 | autologin = 1; |
ba5bf9f5 SL |
57 | argc--, argv++; |
58 | while (argc > 0 && **argv == '-') { | |
59 | for (cp = *argv + 1; *cp; cp++) | |
60 | switch (*cp) { | |
61 | ||
62 | case 'd': | |
63 | options |= SO_DEBUG; | |
64 | debug++; | |
65 | break; | |
66 | ||
67 | case 'v': | |
68 | verbose++; | |
69 | break; | |
70 | ||
71 | case 't': | |
72 | trace++; | |
73 | break; | |
74 | ||
75 | case 'i': | |
5ac6fc46 | 76 | interactive = 0; |
ba5bf9f5 SL |
77 | break; |
78 | ||
79 | case 'n': | |
80 | autologin = 0; | |
81 | break; | |
82 | ||
a16b8edf SL |
83 | case 'g': |
84 | doglob = 0; | |
85 | break; | |
86 | ||
ba5bf9f5 | 87 | default: |
04480325 | 88 | fprintf(stdout, |
ba5bf9f5 SL |
89 | "ftp: %c: unknown option\n", *cp); |
90 | exit(1); | |
91 | } | |
92 | argc--, argv++; | |
93 | } | |
94 | fromatty = isatty(fileno(stdin)); | |
ba5bf9f5 SL |
95 | if (fromatty) |
96 | verbose++; | |
029aa654 | 97 | cpend = 0; /* no pending replies */ |
9069f68e | 98 | proxy = 0; /* proxy not active */ |
029aa654 RA |
99 | crflag = 1; /* strip c.r. on ascii gets */ |
100 | sendport = -1; /* not using ports */ | |
3b645f65 SL |
101 | /* |
102 | * Set up the home directory in case we're globbing. | |
103 | */ | |
14433a73 | 104 | cp = getlogin(); |
9069f68e | 105 | if (cp != NULL) { |
14433a73 | 106 | pw = getpwnam(cp); |
9069f68e | 107 | } |
3b645f65 SL |
108 | if (pw == NULL) |
109 | pw = getpwuid(getuid()); | |
110 | if (pw != NULL) { | |
111 | home = homedir; | |
04480325 | 112 | (void) strcpy(home, pw->pw_dir); |
3b645f65 | 113 | } |
ba5bf9f5 SL |
114 | if (argc > 0) { |
115 | if (setjmp(toplevel)) | |
116 | exit(0); | |
04480325 GM |
117 | (void) signal(SIGINT, intr); |
118 | (void) signal(SIGPIPE, lostpeer); | |
ba5bf9f5 SL |
119 | setpeer(argc + 1, argv - 1); |
120 | } | |
121 | top = setjmp(toplevel) == 0; | |
122 | if (top) { | |
04480325 GM |
123 | (void) signal(SIGINT, intr); |
124 | (void) signal(SIGPIPE, lostpeer); | |
ba5bf9f5 SL |
125 | } |
126 | for (;;) { | |
127 | cmdscanner(top); | |
128 | top = 1; | |
129 | } | |
130 | } | |
131 | ||
029aa654 | 132 | sig_t |
ba5bf9f5 SL |
133 | intr() |
134 | { | |
135 | ||
136 | longjmp(toplevel, 1); | |
137 | } | |
138 | ||
029aa654 | 139 | sig_t |
ba5bf9f5 SL |
140 | lostpeer() |
141 | { | |
142 | extern FILE *cout; | |
143 | extern int data; | |
ba5bf9f5 SL |
144 | |
145 | if (connected) { | |
146 | if (cout != NULL) { | |
04480325 GM |
147 | (void) shutdown(fileno(cout), 1+1); |
148 | (void) fclose(cout); | |
ba5bf9f5 SL |
149 | cout = NULL; |
150 | } | |
151 | if (data >= 0) { | |
04480325 | 152 | (void) shutdown(data, 1+1); |
ba5bf9f5 SL |
153 | (void) close(data); |
154 | data = -1; | |
155 | } | |
156 | connected = 0; | |
157 | } | |
9069f68e GM |
158 | pswitch(1); |
159 | if (connected) { | |
160 | if (cout != NULL) { | |
04480325 GM |
161 | (void) shutdown(fileno(cout), 1+1); |
162 | (void) fclose(cout); | |
9069f68e GM |
163 | cout = NULL; |
164 | } | |
165 | connected = 0; | |
166 | } | |
167 | proxflag = 0; | |
168 | pswitch(0); | |
ba5bf9f5 SL |
169 | } |
170 | ||
04480325 | 171 | /*char * |
ba5bf9f5 SL |
172 | tail(filename) |
173 | char *filename; | |
174 | { | |
175 | register char *s; | |
176 | ||
177 | while (*filename) { | |
178 | s = rindex(filename, '/'); | |
179 | if (s == NULL) | |
180 | break; | |
181 | if (s[1]) | |
182 | return (s + 1); | |
183 | *s = '\0'; | |
184 | } | |
185 | return (filename); | |
186 | } | |
04480325 | 187 | */ |
ba5bf9f5 SL |
188 | /* |
189 | * Command parser. | |
190 | */ | |
191 | cmdscanner(top) | |
192 | int top; | |
193 | { | |
194 | register struct cmd *c; | |
195 | struct cmd *getcmd(); | |
ba5bf9f5 SL |
196 | extern int help(); |
197 | ||
198 | if (!top) | |
04480325 | 199 | (void) putchar('\n'); |
ba5bf9f5 SL |
200 | for (;;) { |
201 | if (fromatty) { | |
202 | printf("ftp> "); | |
04480325 | 203 | (void) fflush(stdout); |
ba5bf9f5 | 204 | } |
5a94754b | 205 | if (gets(line) == 0) { |
f888943d | 206 | if (feof(stdin) || ferror(stdin)) |
c3b6c3a8 | 207 | quit(); |
ba5bf9f5 | 208 | break; |
5a94754b | 209 | } |
ba5bf9f5 SL |
210 | if (line[0] == 0) |
211 | break; | |
212 | makeargv(); | |
9069f68e | 213 | if (margc == 0) { |
14433a73 | 214 | continue; |
9069f68e | 215 | } |
ba5bf9f5 SL |
216 | c = getcmd(margv[0]); |
217 | if (c == (struct cmd *)-1) { | |
218 | printf("?Ambiguous command\n"); | |
219 | continue; | |
220 | } | |
221 | if (c == 0) { | |
222 | printf("?Invalid command\n"); | |
223 | continue; | |
224 | } | |
5ac6fc46 SL |
225 | if (c->c_conn && !connected) { |
226 | printf ("Not connected.\n"); | |
227 | continue; | |
228 | } | |
ba5bf9f5 SL |
229 | (*c->c_handler)(margc, margv); |
230 | if (bell && c->c_bell) | |
ff00793c | 231 | (void) putchar('\007'); |
ba5bf9f5 SL |
232 | if (c->c_handler != help) |
233 | break; | |
234 | } | |
04480325 GM |
235 | (void) signal(SIGINT, intr); |
236 | (void) signal(SIGPIPE, lostpeer); | |
ba5bf9f5 SL |
237 | } |
238 | ||
239 | struct cmd * | |
240 | getcmd(name) | |
241 | register char *name; | |
242 | { | |
a7d96790 | 243 | extern struct cmd cmdtab[]; |
ba5bf9f5 SL |
244 | register char *p, *q; |
245 | register struct cmd *c, *found; | |
246 | register int nmatches, longest; | |
247 | ||
248 | longest = 0; | |
249 | nmatches = 0; | |
250 | found = 0; | |
251 | for (c = cmdtab; p = c->c_name; c++) { | |
252 | for (q = name; *q == *p++; q++) | |
253 | if (*q == 0) /* exact match? */ | |
254 | return (c); | |
255 | if (!*q) { /* the name was a prefix */ | |
256 | if (q - name > longest) { | |
257 | longest = q - name; | |
258 | nmatches = 1; | |
259 | found = c; | |
260 | } else if (q - name == longest) | |
261 | nmatches++; | |
262 | } | |
263 | } | |
264 | if (nmatches > 1) | |
265 | return ((struct cmd *)-1); | |
266 | return (found); | |
267 | } | |
268 | ||
269 | /* | |
270 | * Slice a string up into argc/argv. | |
271 | */ | |
9069f68e GM |
272 | |
273 | int slrflag; | |
274 | ||
ba5bf9f5 SL |
275 | makeargv() |
276 | { | |
277 | char **argp; | |
278 | char *slurpstring(); | |
279 | ||
280 | margc = 0; | |
281 | argp = margv; | |
282 | stringbase = line; /* scan from first of buffer */ | |
283 | argbase = argbuf; /* store from first of buffer */ | |
9069f68e GM |
284 | slrflag = 0; |
285 | while (*argp++ = slurpstring()) | |
ba5bf9f5 SL |
286 | margc++; |
287 | } | |
288 | ||
289 | /* | |
290 | * Parse string into argbuf; | |
291 | * implemented with FSM to | |
292 | * handle quoting and strings | |
293 | */ | |
294 | char * | |
295 | slurpstring() | |
296 | { | |
297 | int got_one = 0; | |
298 | register char *sb = stringbase; | |
299 | register char *ap = argbase; | |
300 | char *tmp = argbase; /* will return this if token found */ | |
301 | ||
9069f68e GM |
302 | if (*sb == '!' || *sb == '$') { /* recognize ! as a token for shell */ |
303 | switch (slrflag) { /* and $ as token for macro invoke */ | |
304 | case 0: | |
305 | slrflag++; | |
306 | stringbase++; | |
307 | return ((*sb == '!') ? "!" : "$"); | |
ff00793c | 308 | /* NOTREACHED */ |
9069f68e GM |
309 | case 1: |
310 | slrflag++; | |
311 | altarg = stringbase; | |
312 | break; | |
313 | default: | |
314 | break; | |
315 | } | |
316 | } | |
317 | ||
ba5bf9f5 SL |
318 | S0: |
319 | switch (*sb) { | |
320 | ||
321 | case '\0': | |
322 | goto OUT; | |
323 | ||
324 | case ' ': | |
325 | case '\t': | |
326 | sb++; goto S0; | |
327 | ||
328 | default: | |
9069f68e GM |
329 | switch (slrflag) { |
330 | case 0: | |
331 | slrflag++; | |
332 | break; | |
333 | case 1: | |
334 | slrflag++; | |
335 | altarg = sb; | |
336 | break; | |
337 | default: | |
338 | break; | |
339 | } | |
ba5bf9f5 SL |
340 | goto S1; |
341 | } | |
342 | ||
343 | S1: | |
344 | switch (*sb) { | |
345 | ||
346 | case ' ': | |
347 | case '\t': | |
348 | case '\0': | |
349 | goto OUT; /* end of token */ | |
350 | ||
351 | case '\\': | |
352 | sb++; goto S2; /* slurp next character */ | |
353 | ||
354 | case '"': | |
355 | sb++; goto S3; /* slurp quoted string */ | |
356 | ||
357 | default: | |
358 | *ap++ = *sb++; /* add character to token */ | |
359 | got_one = 1; | |
360 | goto S1; | |
361 | } | |
362 | ||
363 | S2: | |
364 | switch (*sb) { | |
365 | ||
366 | case '\0': | |
367 | goto OUT; | |
368 | ||
369 | default: | |
370 | *ap++ = *sb++; | |
371 | got_one = 1; | |
372 | goto S1; | |
373 | } | |
374 | ||
375 | S3: | |
376 | switch (*sb) { | |
377 | ||
378 | case '\0': | |
379 | goto OUT; | |
380 | ||
381 | case '"': | |
382 | sb++; goto S1; | |
383 | ||
384 | default: | |
385 | *ap++ = *sb++; | |
386 | got_one = 1; | |
387 | goto S3; | |
388 | } | |
389 | ||
390 | OUT: | |
391 | if (got_one) | |
392 | *ap++ = '\0'; | |
393 | argbase = ap; /* update storage pointer */ | |
394 | stringbase = sb; /* update scan pointer */ | |
9069f68e | 395 | if (got_one) { |
ba5bf9f5 | 396 | return(tmp); |
9069f68e GM |
397 | } |
398 | switch (slrflag) { | |
399 | case 0: | |
400 | slrflag++; | |
401 | break; | |
402 | case 1: | |
403 | slrflag++; | |
404 | altarg = (char *) 0; | |
405 | break; | |
406 | default: | |
407 | break; | |
408 | } | |
ba5bf9f5 SL |
409 | return((char *)0); |
410 | } | |
411 | ||
412 | #define HELPINDENT (sizeof ("directory")) | |
413 | ||
414 | /* | |
415 | * Help command. | |
416 | * Call each command handler with argc == 0 and argv[0] == name. | |
417 | */ | |
418 | help(argc, argv) | |
419 | int argc; | |
420 | char *argv[]; | |
421 | { | |
a7d96790 | 422 | extern struct cmd cmdtab[]; |
ba5bf9f5 SL |
423 | register struct cmd *c; |
424 | ||
425 | if (argc == 1) { | |
9069f68e | 426 | register int i, j, w, k; |
ba5bf9f5 SL |
427 | int columns, width = 0, lines; |
428 | extern int NCMDS; | |
429 | ||
430 | printf("Commands may be abbreviated. Commands are:\n\n"); | |
431 | for (c = cmdtab; c < &cmdtab[NCMDS]; c++) { | |
432 | int len = strlen(c->c_name); | |
433 | ||
434 | if (len > width) | |
435 | width = len; | |
436 | } | |
437 | width = (width + 8) &~ 7; | |
438 | columns = 80 / width; | |
439 | if (columns == 0) | |
440 | columns = 1; | |
441 | lines = (NCMDS + columns - 1) / columns; | |
442 | for (i = 0; i < lines; i++) { | |
443 | for (j = 0; j < columns; j++) { | |
444 | c = cmdtab + j * lines + i; | |
9069f68e | 445 | if (c->c_name && (!proxy || c->c_proxy)) { |
14433a73 | 446 | printf("%s", c->c_name); |
9069f68e GM |
447 | } |
448 | else if (c->c_name) { | |
449 | for (k=0; k < strlen(c->c_name); k++) { | |
04480325 | 450 | (void) putchar(' '); |
9069f68e GM |
451 | } |
452 | } | |
ba5bf9f5 SL |
453 | if (c + lines >= &cmdtab[NCMDS]) { |
454 | printf("\n"); | |
455 | break; | |
456 | } | |
457 | w = strlen(c->c_name); | |
458 | while (w < width) { | |
459 | w = (w + 8) &~ 7; | |
04480325 | 460 | (void) putchar('\t'); |
ba5bf9f5 SL |
461 | } |
462 | } | |
463 | } | |
464 | return; | |
465 | } | |
466 | while (--argc > 0) { | |
467 | register char *arg; | |
468 | arg = *++argv; | |
469 | c = getcmd(arg); | |
470 | if (c == (struct cmd *)-1) | |
471 | printf("?Ambiguous help command %s\n", arg); | |
472 | else if (c == (struct cmd *)0) | |
473 | printf("?Invalid help command %s\n", arg); | |
474 | else | |
475 | printf("%-*s\t%s\n", HELPINDENT, | |
476 | c->c_name, c->c_help); | |
477 | } | |
478 | } |