Commit | Line | Data |
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edf71f48 DF |
1 | /* |
2 | * Copyright (c) 1983 Regents of the University of California. | |
3 | * All rights reserved. The Berkeley software License Agreement | |
4 | * specifies the terms and conditions for redistribution. | |
5 | */ | |
6 | ||
7 | #ifndef lint | |
8 | char copyright[] = | |
9 | "@(#) Copyright (c) 1983 Regents of the University of California.\n\ | |
10 | All rights reserved.\n"; | |
11 | #endif not lint | |
12 | ||
ba5bf9f5 | 13 | #ifndef lint |
edf71f48 DF |
14 | static char sccsid[] = "@(#)main.c 5.1 (Berkeley) %G%"; |
15 | #endif not lint | |
ba5bf9f5 SL |
16 | |
17 | /* | |
18 | * FTP User Program -- Command Interface. | |
19 | */ | |
3b645f65 | 20 | #include <sys/param.h> |
ba5bf9f5 SL |
21 | #include <sys/socket.h> |
22 | #include <sys/ioctl.h> | |
23 | ||
62c4a390 SL |
24 | #include <arpa/ftp.h> |
25 | ||
ba5bf9f5 SL |
26 | #include <signal.h> |
27 | #include <stdio.h> | |
28 | #include <errno.h> | |
29 | #include <ctype.h> | |
30 | #include <netdb.h> | |
3b645f65 | 31 | #include <pwd.h> |
ba5bf9f5 | 32 | |
ba5bf9f5 SL |
33 | #include "ftp_var.h" |
34 | ||
35 | int intr(); | |
36 | int lostpeer(); | |
3b645f65 | 37 | extern char *home; |
ba5bf9f5 SL |
38 | |
39 | main(argc, argv) | |
40 | char *argv[]; | |
41 | { | |
42 | register char *cp; | |
43 | int top; | |
3b645f65 SL |
44 | struct passwd *pw; |
45 | char homedir[MAXPATHLEN]; | |
ba5bf9f5 SL |
46 | |
47 | sp = getservbyname("ftp", "tcp"); | |
48 | if (sp == 0) { | |
49 | fprintf(stderr, "ftp: ftp/tcp: unknown service\n"); | |
50 | exit(1); | |
51 | } | |
a16b8edf | 52 | doglob = 1; |
5ac6fc46 | 53 | interactive = 1; |
a16b8edf | 54 | autologin = 1; |
ba5bf9f5 SL |
55 | argc--, argv++; |
56 | while (argc > 0 && **argv == '-') { | |
57 | for (cp = *argv + 1; *cp; cp++) | |
58 | switch (*cp) { | |
59 | ||
60 | case 'd': | |
61 | options |= SO_DEBUG; | |
62 | debug++; | |
63 | break; | |
64 | ||
65 | case 'v': | |
66 | verbose++; | |
67 | break; | |
68 | ||
69 | case 't': | |
70 | trace++; | |
71 | break; | |
72 | ||
73 | case 'i': | |
5ac6fc46 | 74 | interactive = 0; |
ba5bf9f5 SL |
75 | break; |
76 | ||
77 | case 'n': | |
78 | autologin = 0; | |
79 | break; | |
80 | ||
a16b8edf SL |
81 | case 'g': |
82 | doglob = 0; | |
83 | break; | |
84 | ||
ba5bf9f5 SL |
85 | default: |
86 | fprintf(stderr, | |
87 | "ftp: %c: unknown option\n", *cp); | |
88 | exit(1); | |
89 | } | |
90 | argc--, argv++; | |
91 | } | |
92 | fromatty = isatty(fileno(stdin)); | |
93 | /* | |
94 | * Set up defaults for FTP. | |
95 | */ | |
96 | strcpy(typename, "ascii"), type = TYPE_A; | |
97 | strcpy(formname, "non-print"), form = FORM_N; | |
98 | strcpy(modename, "stream"), mode = MODE_S; | |
99 | strcpy(structname, "file"), stru = STRU_F; | |
00775b29 | 100 | strcpy(bytename, "8"), bytesize = 8; |
ba5bf9f5 SL |
101 | if (fromatty) |
102 | verbose++; | |
3b645f65 SL |
103 | /* |
104 | * Set up the home directory in case we're globbing. | |
105 | */ | |
106 | pw = getpwnam(getlogin()); | |
107 | if (pw == NULL) | |
108 | pw = getpwuid(getuid()); | |
109 | if (pw != NULL) { | |
110 | home = homedir; | |
111 | strcpy(home, pw->pw_dir); | |
112 | } | |
ba5bf9f5 SL |
113 | if (argc > 0) { |
114 | if (setjmp(toplevel)) | |
115 | exit(0); | |
67368a68 SL |
116 | signal(SIGINT, intr); |
117 | signal(SIGPIPE, lostpeer); | |
ba5bf9f5 SL |
118 | setpeer(argc + 1, argv - 1); |
119 | } | |
120 | top = setjmp(toplevel) == 0; | |
121 | if (top) { | |
67368a68 SL |
122 | signal(SIGINT, intr); |
123 | signal(SIGPIPE, lostpeer); | |
ba5bf9f5 SL |
124 | } |
125 | for (;;) { | |
126 | cmdscanner(top); | |
127 | top = 1; | |
128 | } | |
129 | } | |
130 | ||
131 | intr() | |
132 | { | |
133 | ||
134 | longjmp(toplevel, 1); | |
135 | } | |
136 | ||
137 | lostpeer() | |
138 | { | |
139 | extern FILE *cout; | |
140 | extern int data; | |
ba5bf9f5 SL |
141 | |
142 | if (connected) { | |
143 | if (cout != NULL) { | |
0b579705 | 144 | shutdown(fileno(cout), 1+1); |
ba5bf9f5 SL |
145 | fclose(cout); |
146 | cout = NULL; | |
147 | } | |
148 | if (data >= 0) { | |
0b579705 | 149 | shutdown(data, 1+1); |
ba5bf9f5 SL |
150 | (void) close(data); |
151 | data = -1; | |
152 | } | |
153 | connected = 0; | |
154 | } | |
155 | longjmp(toplevel, 1); | |
156 | } | |
157 | ||
158 | char * | |
159 | tail(filename) | |
160 | char *filename; | |
161 | { | |
162 | register char *s; | |
163 | ||
164 | while (*filename) { | |
165 | s = rindex(filename, '/'); | |
166 | if (s == NULL) | |
167 | break; | |
168 | if (s[1]) | |
169 | return (s + 1); | |
170 | *s = '\0'; | |
171 | } | |
172 | return (filename); | |
173 | } | |
174 | ||
175 | /* | |
176 | * Command parser. | |
177 | */ | |
178 | cmdscanner(top) | |
179 | int top; | |
180 | { | |
181 | register struct cmd *c; | |
182 | struct cmd *getcmd(); | |
183 | extern struct cmd cmdtab[]; | |
184 | extern int help(); | |
185 | ||
186 | if (!top) | |
187 | putchar('\n'); | |
188 | for (;;) { | |
189 | if (fromatty) { | |
190 | printf("ftp> "); | |
191 | fflush(stdout); | |
192 | } | |
5a94754b SL |
193 | if (gets(line) == 0) { |
194 | if (feof(stdin)) { | |
ed129162 RC |
195 | if (!fromatty) |
196 | quit(); | |
5a94754b SL |
197 | clearerr(stdin); |
198 | putchar('\n'); | |
199 | } | |
ba5bf9f5 | 200 | break; |
5a94754b | 201 | } |
ba5bf9f5 SL |
202 | if (line[0] == 0) |
203 | break; | |
204 | makeargv(); | |
205 | c = getcmd(margv[0]); | |
206 | if (c == (struct cmd *)-1) { | |
207 | printf("?Ambiguous command\n"); | |
208 | continue; | |
209 | } | |
210 | if (c == 0) { | |
211 | printf("?Invalid command\n"); | |
212 | continue; | |
213 | } | |
5ac6fc46 SL |
214 | if (c->c_conn && !connected) { |
215 | printf ("Not connected.\n"); | |
216 | continue; | |
217 | } | |
ba5bf9f5 SL |
218 | (*c->c_handler)(margc, margv); |
219 | if (bell && c->c_bell) | |
220 | putchar(CTRL(g)); | |
221 | if (c->c_handler != help) | |
222 | break; | |
223 | } | |
224 | longjmp(toplevel, 0); | |
225 | } | |
226 | ||
227 | struct cmd * | |
228 | getcmd(name) | |
229 | register char *name; | |
230 | { | |
231 | register char *p, *q; | |
232 | register struct cmd *c, *found; | |
233 | register int nmatches, longest; | |
234 | ||
235 | longest = 0; | |
236 | nmatches = 0; | |
237 | found = 0; | |
238 | for (c = cmdtab; p = c->c_name; c++) { | |
239 | for (q = name; *q == *p++; q++) | |
240 | if (*q == 0) /* exact match? */ | |
241 | return (c); | |
242 | if (!*q) { /* the name was a prefix */ | |
243 | if (q - name > longest) { | |
244 | longest = q - name; | |
245 | nmatches = 1; | |
246 | found = c; | |
247 | } else if (q - name == longest) | |
248 | nmatches++; | |
249 | } | |
250 | } | |
251 | if (nmatches > 1) | |
252 | return ((struct cmd *)-1); | |
253 | return (found); | |
254 | } | |
255 | ||
256 | /* | |
257 | * Slice a string up into argc/argv. | |
258 | */ | |
259 | makeargv() | |
260 | { | |
261 | char **argp; | |
262 | char *slurpstring(); | |
263 | ||
264 | margc = 0; | |
265 | argp = margv; | |
266 | stringbase = line; /* scan from first of buffer */ | |
267 | argbase = argbuf; /* store from first of buffer */ | |
268 | while (*argp++ = slurpstring()) | |
269 | margc++; | |
270 | } | |
271 | ||
272 | /* | |
273 | * Parse string into argbuf; | |
274 | * implemented with FSM to | |
275 | * handle quoting and strings | |
276 | */ | |
277 | char * | |
278 | slurpstring() | |
279 | { | |
280 | int got_one = 0; | |
281 | register char *sb = stringbase; | |
282 | register char *ap = argbase; | |
283 | char *tmp = argbase; /* will return this if token found */ | |
284 | ||
5ac6fc46 SL |
285 | if (*sb == '!') { /* recognize ! as a token for shell */ |
286 | stringbase++; | |
287 | return ("!"); | |
288 | } | |
ba5bf9f5 SL |
289 | S0: |
290 | switch (*sb) { | |
291 | ||
292 | case '\0': | |
293 | goto OUT; | |
294 | ||
295 | case ' ': | |
296 | case '\t': | |
297 | sb++; goto S0; | |
298 | ||
299 | default: | |
300 | goto S1; | |
301 | } | |
302 | ||
303 | S1: | |
304 | switch (*sb) { | |
305 | ||
306 | case ' ': | |
307 | case '\t': | |
308 | case '\0': | |
309 | goto OUT; /* end of token */ | |
310 | ||
311 | case '\\': | |
312 | sb++; goto S2; /* slurp next character */ | |
313 | ||
314 | case '"': | |
315 | sb++; goto S3; /* slurp quoted string */ | |
316 | ||
317 | default: | |
318 | *ap++ = *sb++; /* add character to token */ | |
319 | got_one = 1; | |
320 | goto S1; | |
321 | } | |
322 | ||
323 | S2: | |
324 | switch (*sb) { | |
325 | ||
326 | case '\0': | |
327 | goto OUT; | |
328 | ||
329 | default: | |
330 | *ap++ = *sb++; | |
331 | got_one = 1; | |
332 | goto S1; | |
333 | } | |
334 | ||
335 | S3: | |
336 | switch (*sb) { | |
337 | ||
338 | case '\0': | |
339 | goto OUT; | |
340 | ||
341 | case '"': | |
342 | sb++; goto S1; | |
343 | ||
344 | default: | |
345 | *ap++ = *sb++; | |
346 | got_one = 1; | |
347 | goto S3; | |
348 | } | |
349 | ||
350 | OUT: | |
351 | if (got_one) | |
352 | *ap++ = '\0'; | |
353 | argbase = ap; /* update storage pointer */ | |
354 | stringbase = sb; /* update scan pointer */ | |
355 | if (got_one) | |
356 | return(tmp); | |
357 | return((char *)0); | |
358 | } | |
359 | ||
360 | #define HELPINDENT (sizeof ("directory")) | |
361 | ||
362 | /* | |
363 | * Help command. | |
364 | * Call each command handler with argc == 0 and argv[0] == name. | |
365 | */ | |
366 | help(argc, argv) | |
367 | int argc; | |
368 | char *argv[]; | |
369 | { | |
370 | register struct cmd *c; | |
371 | ||
372 | if (argc == 1) { | |
373 | register int i, j, w; | |
374 | int columns, width = 0, lines; | |
375 | extern int NCMDS; | |
376 | ||
377 | printf("Commands may be abbreviated. Commands are:\n\n"); | |
378 | for (c = cmdtab; c < &cmdtab[NCMDS]; c++) { | |
379 | int len = strlen(c->c_name); | |
380 | ||
381 | if (len > width) | |
382 | width = len; | |
383 | } | |
384 | width = (width + 8) &~ 7; | |
385 | columns = 80 / width; | |
386 | if (columns == 0) | |
387 | columns = 1; | |
388 | lines = (NCMDS + columns - 1) / columns; | |
389 | for (i = 0; i < lines; i++) { | |
390 | for (j = 0; j < columns; j++) { | |
391 | c = cmdtab + j * lines + i; | |
392 | printf("%s", c->c_name); | |
393 | if (c + lines >= &cmdtab[NCMDS]) { | |
394 | printf("\n"); | |
395 | break; | |
396 | } | |
397 | w = strlen(c->c_name); | |
398 | while (w < width) { | |
399 | w = (w + 8) &~ 7; | |
400 | putchar('\t'); | |
401 | } | |
402 | } | |
403 | } | |
404 | return; | |
405 | } | |
406 | while (--argc > 0) { | |
407 | register char *arg; | |
408 | arg = *++argv; | |
409 | c = getcmd(arg); | |
410 | if (c == (struct cmd *)-1) | |
411 | printf("?Ambiguous help command %s\n", arg); | |
412 | else if (c == (struct cmd *)0) | |
413 | printf("?Invalid help command %s\n", arg); | |
414 | else | |
415 | printf("%-*s\t%s\n", HELPINDENT, | |
416 | c->c_name, c->c_help); | |
417 | } | |
418 | } | |
419 | ||
420 | /* | |
421 | * Call routine with argc, argv set from args (terminated by 0). | |
422 | */ | |
423 | /* VARARGS2 */ | |
424 | call(routine, args) | |
425 | int (*routine)(); | |
426 | int args; | |
427 | { | |
428 | register int *argp; | |
429 | register int argc; | |
430 | ||
431 | for (argc = 0, argp = &args; *argp++ != 0; argc++) | |
432 | ; | |
433 | (*routine)(argc, &args); | |
434 | } |