Annotation of src/usr.bin/ftp/main.c, Revision 1.93
1.93 ! jsing 1: /* $OpenBSD: main.c,v 1.92 2014/07/16 04:52:43 lteo Exp $ */
1.36 millert 2: /* $NetBSD: main.c,v 1.24 1997/08/18 10:20:26 lukem Exp $ */
1.5 deraadt 3:
1.1 deraadt 4: /*
1.44 itojun 5: * Copyright (C) 1997 and 1998 WIDE Project.
6: * All rights reserved.
7: *
8: * Redistribution and use in source and binary forms, with or without
9: * modification, are permitted provided that the following conditions
10: * are met:
11: * 1. Redistributions of source code must retain the above copyright
12: * notice, this list of conditions and the following disclaimer.
13: * 2. Redistributions in binary form must reproduce the above copyright
14: * notice, this list of conditions and the following disclaimer in the
15: * documentation and/or other materials provided with the distribution.
16: * 3. Neither the name of the project nor the names of its contributors
17: * may be used to endorse or promote products derived from this software
18: * without specific prior written permission.
19: *
20: * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
21: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23: * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
24: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30: * SUCH DAMAGE.
31: */
32:
33: /*
1.1 deraadt 34: * Copyright (c) 1985, 1989, 1993, 1994
35: * The Regents of the University of California. All rights reserved.
36: *
37: * Redistribution and use in source and binary forms, with or without
38: * modification, are permitted provided that the following conditions
39: * are met:
40: * 1. Redistributions of source code must retain the above copyright
41: * notice, this list of conditions and the following disclaimer.
42: * 2. Redistributions in binary form must reproduce the above copyright
43: * notice, this list of conditions and the following disclaimer in the
44: * documentation and/or other materials provided with the distribution.
1.53 millert 45: * 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 46: * may be used to endorse or promote products derived from this software
47: * without specific prior written permission.
48: *
49: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
50: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
51: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
52: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
53: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
54: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
55: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
56: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
57: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
58: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
59: * SUCH DAMAGE.
60: */
61:
62: /*
63: * FTP User Program -- Command Interface.
64: */
65: #include <sys/types.h>
66: #include <sys/socket.h>
67:
1.18 millert 68: #include <ctype.h>
1.1 deraadt 69: #include <err.h>
1.86 jca 70: #include <limits.h>
1.1 deraadt 71: #include <netdb.h>
72: #include <pwd.h>
73: #include <stdio.h>
1.39 deraadt 74: #include <errno.h>
1.18 millert 75: #include <stdlib.h>
1.1 deraadt 76: #include <string.h>
77: #include <unistd.h>
78:
1.91 jsing 79: #include <ressl.h>
80:
81: #include "cmds.h"
1.1 deraadt 82: #include "ftp_var.h"
83:
1.86 jca 84: #ifndef SMALL
85: char * const ssl_verify_opts[] = {
86: #define SSL_CAFILE 0
87: "cafile",
88: #define SSL_CAPATH 1
89: "capath",
90: #define SSL_CIPHERS 2
91: "ciphers",
92: #define SSL_DONTVERIFY 3
93: "dont",
94: #define SSL_DOVERIFY 4
95: "do",
96: #define SSL_VERIFYDEPTH 5
97: "depth",
98: NULL
99: };
1.91 jsing 100:
101: struct ressl_config *ressl_config;
1.86 jca 102: #endif /* !SMALL */
103:
1.49 deraadt 104: int family = PF_UNSPEC;
1.81 halex 105: int pipeout;
1.49 deraadt 106:
1.1 deraadt 107: int
1.54 deraadt 108: main(volatile int argc, char *argv[])
1.1 deraadt 109: {
1.34 millert 110: int ch, top, rval;
1.1 deraadt 111: struct passwd *pw = NULL;
1.44 itojun 112: char *cp, homedir[MAXPATHLEN];
1.38 millert 113: char *outfile = NULL;
1.62 tedu 114: const char *errstr;
1.28 millert 115: int dumb_terminal = 0;
1.91 jsing 116: #ifndef SMALL
117: long long depth;
118: #endif
1.1 deraadt 119:
1.44 itojun 120: ftpport = "ftp";
121: httpport = "http";
1.61 deraadt 122: #ifndef SMALL
123: httpsport = "https";
1.69 martynas 124: #endif /* !SMALL */
1.44 itojun 125: gateport = getenv("FTPSERVERPORT");
1.51 millert 126: if (gateport == NULL || *gateport == '\0')
1.44 itojun 127: gateport = "ftpgate";
1.1 deraadt 128: doglob = 1;
129: interactive = 1;
130: autologin = 1;
1.37 millert 131: passivemode = 1;
132: activefallback = 1;
1.17 millert 133: preserve = 1;
134: verbose = 0;
135: progress = 0;
1.36 millert 136: gatemode = 0;
1.25 millert 137: #ifndef SMALL
1.22 millert 138: editing = 0;
1.28 millert 139: el = NULL;
140: hist = NULL;
1.63 pyr 141: cookiefile = NULL;
1.67 martynas 142: resume = 0;
1.82 haesbaer 143: srcaddr = NULL;
1.77 martynas 144: marg_sl = sl_init();
1.69 martynas 145: #endif /* !SMALL */
1.8 kstailey 146: mark = HASHBYTES;
1.47 itojun 147: #ifdef INET6
148: epsv4 = 1;
149: #else
150: epsv4 = 0;
151: #endif
152: epsv4bad = 0;
1.1 deraadt 153:
1.37 millert 154: /* Set default operation mode based on FTPMODE environment variable */
1.51 millert 155: if ((cp = getenv("FTPMODE")) != NULL && *cp != '\0') {
1.37 millert 156: if (strcmp(cp, "passive") == 0) {
157: passivemode = 1;
158: activefallback = 0;
159: } else if (strcmp(cp, "active") == 0) {
160: passivemode = 0;
161: activefallback = 0;
162: } else if (strcmp(cp, "gate") == 0) {
163: gatemode = 1;
164: } else if (strcmp(cp, "auto") == 0) {
165: passivemode = 1;
166: activefallback = 1;
167: } else
168: warnx("unknown FTPMODE: %s. Using defaults", cp);
169: }
170:
171: if (strcmp(__progname, "gate-ftp") == 0)
1.36 millert 172: gatemode = 1;
173: gateserver = getenv("FTPSERVER");
174: if (gateserver == NULL || *gateserver == '\0')
175: gateserver = GATE_SERVER;
176: if (gatemode) {
177: if (*gateserver == '\0') {
178: warnx(
1.37 millert 179: "Neither $FTPSERVER nor $GATE_SERVER is defined; disabling gate-ftp");
1.36 millert 180: gatemode = 0;
181: }
182: }
1.17 millert 183:
1.31 millert 184: cp = getenv("TERM");
1.51 millert 185: dumb_terminal = (cp == NULL || *cp == '\0' || !strcmp(cp, "dumb") ||
1.31 millert 186: !strcmp(cp, "emacs") || !strcmp(cp, "su"));
1.17 millert 187: fromatty = isatty(fileno(stdin));
1.22 millert 188: if (fromatty) {
1.17 millert 189: verbose = 1; /* verbose if from a tty */
1.25 millert 190: #ifndef SMALL
1.28 millert 191: if (!dumb_terminal)
1.34 millert 192: editing = 1; /* editing mode on if tty is usable */
1.69 martynas 193: #endif /* !SMALL */
1.22 millert 194: }
1.30 deraadt 195:
196: ttyout = stdout;
1.33 millert 197: if (isatty(fileno(ttyout)) && !dumb_terminal && foregroundproc())
1.34 millert 198: progress = 1; /* progress bar on if tty is usable */
1.32 deraadt 199:
1.63 pyr 200: #ifndef SMALL
201: cookiefile = getenv("http_cookies");
1.69 martynas 202: #endif /* !SMALL */
1.88 lteo 203: httpuseragent = NULL;
1.63 pyr 204:
1.86 jca 205: while ((ch = getopt(argc, argv,
1.88 lteo 206: "46AaCc:dD:Eegik:mno:pP:r:S:s:tU:vV")) != -1) {
1.1 deraadt 207: switch (ch) {
1.49 deraadt 208: case '4':
209: family = PF_INET;
210: break;
211: case '6':
212: family = PF_INET6;
213: break;
1.37 millert 214: case 'A':
215: activefallback = 0;
216: passivemode = 0;
217: break;
218:
1.17 millert 219: case 'a':
220: anonftp = 1;
221: break;
222:
1.67 martynas 223: case 'C':
224: #ifndef SMALL
225: resume = 1;
1.69 martynas 226: #endif /* !SMALL */
1.67 martynas 227: break;
228:
1.63 pyr 229: case 'c':
230: #ifndef SMALL
231: cookiefile = optarg;
1.69 martynas 232: #endif /* !SMALL */
1.63 pyr 233: break;
234:
1.87 deraadt 235: case 'D':
236: action = optarg;
237: break;
1.1 deraadt 238: case 'd':
1.70 martynas 239: #ifndef SMALL
1.1 deraadt 240: options |= SO_DEBUG;
241: debug++;
1.70 martynas 242: #endif /* !SMALL */
1.1 deraadt 243: break;
1.17 millert 244:
1.59 fgsch 245: case 'E':
246: epsv4 = 0;
247: break;
248:
1.28 millert 249: case 'e':
250: #ifndef SMALL
1.22 millert 251: editing = 0;
1.69 martynas 252: #endif /* !SMALL */
1.21 kstailey 253: break;
254:
1.1 deraadt 255: case 'g':
256: doglob = 0;
257: break;
258:
259: case 'i':
260: interactive = 0;
1.41 millert 261: break;
262:
1.65 espie 263: case 'k':
264: keep_alive_timeout = strtonum(optarg, 0, INT_MAX,
265: &errstr);
266: if (errstr != NULL) {
267: warnx("keep alive amount is %s: %s", errstr,
268: optarg);
269: usage();
270: }
271: break;
1.41 millert 272: case 'm':
1.42 millert 273: progress = -1;
1.1 deraadt 274: break;
275:
276: case 'n':
277: autologin = 0;
278: break;
279:
1.38 millert 280: case 'o':
281: outfile = optarg;
1.81 halex 282: if (*outfile == '\0') {
283: pipeout = 0;
284: outfile = NULL;
285: ttyout = stdout;
286: } else {
287: pipeout = strcmp(outfile, "-") == 0;
288: ttyout = pipeout ? stderr : stdout;
289: }
1.38 millert 290: break;
291:
1.3 deraadt 292: case 'p':
1.17 millert 293: passivemode = 1;
1.37 millert 294: activefallback = 0;
1.3 deraadt 295: break;
296:
1.17 millert 297: case 'P':
1.44 itojun 298: ftpport = optarg;
1.7 mickey 299: break;
300:
1.18 millert 301: case 'r':
1.62 tedu 302: retry_connect = strtonum(optarg, 0, INT_MAX, &errstr);
1.65 espie 303: if (errstr != NULL) {
304: warnx("retry amount is %s: %s", errstr,
1.62 tedu 305: optarg);
1.65 espie 306: usage();
307: }
1.18 millert 308: break;
309:
1.86 jca 310: case 'S':
311: #ifndef SMALL
1.91 jsing 312: if (ressl_config == NULL) {
313: ressl_config = ressl_config_new();
314: if (ressl_config == NULL)
315: errx(1, "ressl config failed");
316: }
317:
1.86 jca 318: cp = optarg;
319: while (*cp) {
320: char *str;
321: switch (getsubopt(&cp, ssl_verify_opts, &str)) {
322: case SSL_CAFILE:
323: if (str == NULL)
324: errx(1, "missing CA file");
1.93 ! jsing 325: if (ressl_config_set_ca_file(
! 326: ressl_config, str) != 0)
! 327: errx(1, "ressl ca file failed");
1.86 jca 328: break;
329: case SSL_CAPATH:
330: if (str == NULL)
331: errx(1, "missing CA directory"
332: " path");
1.93 ! jsing 333: if (ressl_config_set_ca_path(
! 334: ressl_config, str) != 0)
! 335: errx(1, "ressl ca path failed");
1.86 jca 336: break;
337: case SSL_CIPHERS:
338: if (str == NULL)
339: errx(1, "missing cipher list");
1.93 ! jsing 340: if (ressl_config_set_ciphers(
! 341: ressl_config, str) != 0)
! 342: errx(1, "ressl ciphers failed");
1.86 jca 343: break;
344: case SSL_DONTVERIFY:
1.91 jsing 345: ressl_config_insecure_no_verify(
346: ressl_config);
1.86 jca 347: break;
348: case SSL_DOVERIFY:
1.91 jsing 349: ressl_config_verify(ressl_config);
1.86 jca 350: break;
351: case SSL_VERIFYDEPTH:
352: if (str == NULL)
353: errx(1, "missing depth");
1.91 jsing 354: depth = strtonum(str, 0, INT_MAX,
355: &errstr);
1.86 jca 356: if (errstr)
357: errx(1, "certificate "
358: "validation depth is %s",
359: errstr);
1.91 jsing 360: ressl_config_set_verify_depth(
361: ressl_config, (int)depth);
1.86 jca 362: break;
363: default:
364: errx(1, "unknown -S suboption `%s'",
365: suboptarg ? suboptarg : "");
366: /* NOTREACHED */
367: }
368: }
369: #endif
370: break;
371:
1.82 haesbaer 372: case 's':
373: #ifndef SMALL
374: srcaddr = optarg;
375: #endif /* !SMALL */
376: break;
377:
1.1 deraadt 378: case 't':
1.17 millert 379: trace = 1;
1.1 deraadt 380: break;
381:
1.89 halex 382: #ifndef SMALL
1.88 lteo 383: case 'U':
1.89 halex 384: free (httpuseragent);
1.88 lteo 385: if (strcspn(optarg, "\r\n") != strlen(optarg))
386: errx(1, "Invalid User-Agent: %s.", optarg);
387: if (asprintf(&httpuseragent, "User-Agent: %s",
388: optarg) == -1)
389: errx(1, "Can't allocate memory for HTTP(S) "
390: "User-Agent");
1.89 halex 391: break;
1.88 lteo 392: #endif /* !SMALL */
393:
1.1 deraadt 394: case 'v':
1.17 millert 395: verbose = 1;
396: break;
397:
398: case 'V':
399: verbose = 0;
1.1 deraadt 400: break;
401:
402: default:
1.17 millert 403: usage();
1.1 deraadt 404: }
405: }
406: argc -= optind;
407: argv += optind;
1.63 pyr 408:
409: #ifndef SMALL
410: cookie_load();
1.69 martynas 411: #endif /* !SMALL */
1.89 halex 412: if (httpuseragent == NULL)
413: httpuseragent = HTTP_USER_AGENT;
1.1 deraadt 414:
415: cpend = 0; /* no pending replies */
416: proxy = 0; /* proxy not active */
417: crflag = 1; /* strip c.r. on ascii gets */
418: sendport = -1; /* not using ports */
419: /*
420: * Set up the home directory in case we're globbing.
421: */
422: cp = getlogin();
423: if (cp != NULL) {
424: pw = getpwnam(cp);
425: }
426: if (pw == NULL)
427: pw = getpwuid(getuid());
428: if (pw != NULL) {
1.52 deraadt 429: (void)strlcpy(homedir, pw->pw_dir, sizeof homedir);
1.1 deraadt 430: home = homedir;
1.3 deraadt 431: }
1.9 michaels 432:
1.17 millert 433: setttywidth(0);
1.18 millert 434: (void)signal(SIGWINCH, setttywidth);
1.34 millert 435:
1.17 millert 436: if (argc > 0) {
1.44 itojun 437: if (isurl(argv[0])) {
1.38 millert 438: rval = auto_fetch(argc, argv, outfile);
1.17 millert 439: if (rval >= 0) /* -1 == connected and cd-ed */
440: exit(rval);
441: } else {
1.77 martynas 442: #ifndef SMALL
1.3 deraadt 443: char *xargv[5];
444:
445: if (setjmp(toplevel))
446: exit(0);
1.20 millert 447: (void)signal(SIGINT, (sig_t)intr);
448: (void)signal(SIGPIPE, (sig_t)lostpeer);
1.3 deraadt 449: xargv[0] = __progname;
1.17 millert 450: xargv[1] = argv[0];
451: xargv[2] = argv[1];
452: xargv[3] = argv[2];
453: xargv[4] = NULL;
1.18 millert 454: do {
455: setpeer(argc+1, xargv);
456: if (!retry_connect)
457: break;
458: if (!connected) {
459: macnum = 0;
1.30 deraadt 460: fputs("Retrying...\n", ttyout);
1.18 millert 461: sleep(retry_connect);
462: }
463: } while (!connected);
1.35 mickey 464: retry_connect = 0; /* connected, stop hiding msgs */
1.77 martynas 465: #endif /* !SMALL */
1.3 deraadt 466: }
1.1 deraadt 467: }
1.28 millert 468: #ifndef SMALL
469: controlediting();
1.1 deraadt 470: top = setjmp(toplevel) == 0;
471: if (top) {
1.20 millert 472: (void)signal(SIGINT, (sig_t)intr);
473: (void)signal(SIGPIPE, (sig_t)lostpeer);
1.1 deraadt 474: }
475: for (;;) {
476: cmdscanner(top);
477: top = 1;
478: }
1.77 martynas 479: #else /* !SMALL */
480: usage();
481: #endif /* !SMALL */
1.1 deraadt 482: }
483:
484: void
1.58 deraadt 485: intr(void)
1.1 deraadt 486: {
1.90 deraadt 487: int save_errno = errno;
1.1 deraadt 488:
1.90 deraadt 489: write(fileno(ttyout), "\n\r", 2);
1.17 millert 490: alarmtimer(0);
1.90 deraadt 491:
492: errno = save_errno;
1.1 deraadt 493: longjmp(toplevel, 1);
494: }
495:
496: void
1.58 deraadt 497: lostpeer(void)
1.1 deraadt 498: {
1.39 deraadt 499: int save_errno = errno;
1.1 deraadt 500:
1.17 millert 501: alarmtimer(0);
1.1 deraadt 502: if (connected) {
503: if (cout != NULL) {
1.66 moritz 504: (void)shutdown(fileno(cout), SHUT_RDWR);
1.18 millert 505: (void)fclose(cout);
1.1 deraadt 506: cout = NULL;
507: }
508: if (data >= 0) {
1.66 moritz 509: (void)shutdown(data, SHUT_RDWR);
1.18 millert 510: (void)close(data);
1.1 deraadt 511: data = -1;
512: }
513: connected = 0;
514: }
515: pswitch(1);
516: if (connected) {
517: if (cout != NULL) {
1.66 moritz 518: (void)shutdown(fileno(cout), SHUT_RDWR);
1.18 millert 519: (void)fclose(cout);
1.1 deraadt 520: cout = NULL;
521: }
522: connected = 0;
523: }
524: proxflag = 0;
525: pswitch(0);
1.39 deraadt 526: errno = save_errno;
1.1 deraadt 527: }
528:
1.77 martynas 529: #ifndef SMALL
1.1 deraadt 530: /*
1.17 millert 531: * Generate a prompt
532: */
1.1 deraadt 533: char *
1.58 deraadt 534: prompt(void)
1.1 deraadt 535: {
1.17 millert 536: return ("ftp> ");
1.1 deraadt 537: }
538:
539: /*
540: * Command parser.
541: */
542: void
1.58 deraadt 543: cmdscanner(int top)
1.1 deraadt 544: {
545: struct cmd *c;
1.17 millert 546: int num;
1.55 otto 547: HistEvent hev;
1.1 deraadt 548:
1.77 martynas 549: if (!top && !editing)
1.30 deraadt 550: (void)putc('\n', ttyout);
1.1 deraadt 551: for (;;) {
1.17 millert 552: if (!editing) {
553: if (fromatty) {
1.30 deraadt 554: fputs(prompt(), ttyout);
555: (void)fflush(ttyout);
1.17 millert 556: }
557: if (fgets(line, sizeof(line), stdin) == NULL)
558: quit(0, 0);
559: num = strlen(line);
560: if (num == 0)
561: break;
562: if (line[--num] == '\n') {
563: if (num == 0)
564: break;
565: line[num] = '\0';
566: } else if (num == sizeof(line) - 2) {
1.30 deraadt 567: fputs("sorry, input line too long.\n", ttyout);
1.17 millert 568: while ((num = getchar()) != '\n' && num != EOF)
569: /* void */;
570: break;
571: } /* else it was a line without a newline */
572: } else {
573: const char *buf;
574: cursor_pos = NULL;
575:
1.90 deraadt 576: if ((buf = el_gets(el, &num)) == NULL || num == 0) {
577: putc('\n', ttyout);
578: fflush(ttyout);
1.17 millert 579: quit(0, 0);
1.90 deraadt 580: }
1.46 fgsch 581: if (buf[--num] == '\n') {
1.17 millert 582: if (num == 0)
583: break;
1.46 fgsch 584: }
585: if (num >= sizeof(line)) {
1.30 deraadt 586: fputs("sorry, input line too long.\n", ttyout);
1.1 deraadt 587: break;
1.17 millert 588: }
1.34 millert 589: memcpy(line, buf, (size_t)num);
1.17 millert 590: line[num] = '\0';
1.55 otto 591: history(hist, &hev, H_ENTER, buf);
1.17 millert 592: }
593:
1.1 deraadt 594: makeargv();
1.17 millert 595: if (margc == 0)
1.1 deraadt 596: continue;
597: c = getcmd(margv[0]);
598: if (c == (struct cmd *)-1) {
1.30 deraadt 599: fputs("?Ambiguous command.\n", ttyout);
1.1 deraadt 600: continue;
601: }
602: if (c == 0) {
1.24 millert 603: /*
604: * Give editline(3) a shot at unknown commands.
605: * XXX - bogus commands with a colon in
606: * them will not elicit an error.
607: */
1.45 markus 608: if (editing &&
1.55 otto 609: el_parse(el, margc, (const char **)margv) != 0)
1.30 deraadt 610: fputs("?Invalid command.\n", ttyout);
1.1 deraadt 611: continue;
612: }
613: if (c->c_conn && !connected) {
1.30 deraadt 614: fputs("Not connected.\n", ttyout);
1.1 deraadt 615: continue;
616: }
1.17 millert 617: confirmrest = 0;
1.1 deraadt 618: (*c->c_handler)(margc, margv);
619: if (bell && c->c_bell)
1.30 deraadt 620: (void)putc('\007', ttyout);
1.1 deraadt 621: if (c->c_handler != help)
622: break;
623: }
1.20 millert 624: (void)signal(SIGINT, (sig_t)intr);
625: (void)signal(SIGPIPE, (sig_t)lostpeer);
1.1 deraadt 626: }
627:
628: struct cmd *
1.58 deraadt 629: getcmd(const char *name)
1.1 deraadt 630: {
1.17 millert 631: const char *p, *q;
1.1 deraadt 632: struct cmd *c, *found;
633: int nmatches, longest;
1.2 deraadt 634:
635: if (name == NULL)
636: return (0);
1.1 deraadt 637:
638: longest = 0;
639: nmatches = 0;
640: found = 0;
1.17 millert 641: for (c = cmdtab; (p = c->c_name) != NULL; c++) {
1.1 deraadt 642: for (q = name; *q == *p++; q++)
643: if (*q == 0) /* exact match? */
644: return (c);
645: if (!*q) { /* the name was a prefix */
646: if (q - name > longest) {
647: longest = q - name;
648: nmatches = 1;
649: found = c;
650: } else if (q - name == longest)
651: nmatches++;
652: }
653: }
654: if (nmatches > 1)
655: return ((struct cmd *)-1);
656: return (found);
657: }
658:
659: /*
660: * Slice a string up into argc/argv.
661: */
662:
663: int slrflag;
664:
665: void
1.58 deraadt 666: makeargv(void)
1.1 deraadt 667: {
1.17 millert 668: char *argp;
1.1 deraadt 669:
670: stringbase = line; /* scan from first of buffer */
671: argbase = argbuf; /* store from first of buffer */
672: slrflag = 0;
1.17 millert 673: marg_sl->sl_cur = 0; /* reset to start of marg_sl */
1.1 deraadt 674: for (margc = 0; ; margc++) {
1.17 millert 675: argp = slurpstring();
676: sl_add(marg_sl, argp);
677: if (argp == NULL)
1.1 deraadt 678: break;
679: }
1.17 millert 680: if (cursor_pos == line) {
681: cursor_argc = 0;
682: cursor_argo = 0;
683: } else if (cursor_pos != NULL) {
684: cursor_argc = margc;
685: cursor_argo = strlen(margv[margc-1]);
686: }
687: }
1.1 deraadt 688:
1.17 millert 689: #define INC_CHKCURSOR(x) { (x)++ ; \
690: if (x == cursor_pos) { \
691: cursor_argc = margc; \
692: cursor_argo = ap-argbase; \
693: cursor_pos = NULL; \
694: } }
1.1 deraadt 695:
696: /*
697: * Parse string into argbuf;
698: * implemented with FSM to
699: * handle quoting and strings
700: */
701: char *
1.58 deraadt 702: slurpstring(void)
1.1 deraadt 703: {
704: int got_one = 0;
705: char *sb = stringbase;
706: char *ap = argbase;
707: char *tmp = argbase; /* will return this if token found */
708:
709: if (*sb == '!' || *sb == '$') { /* recognize ! as a token for shell */
710: switch (slrflag) { /* and $ as token for macro invoke */
711: case 0:
712: slrflag++;
1.17 millert 713: INC_CHKCURSOR(stringbase);
1.1 deraadt 714: return ((*sb == '!') ? "!" : "$");
715: /* NOTREACHED */
716: case 1:
717: slrflag++;
718: altarg = stringbase;
719: break;
720: default:
721: break;
722: }
723: }
724:
725: S0:
726: switch (*sb) {
727:
728: case '\0':
729: goto OUT;
730:
731: case ' ':
732: case '\t':
1.17 millert 733: INC_CHKCURSOR(sb);
734: goto S0;
1.1 deraadt 735:
736: default:
737: switch (slrflag) {
738: case 0:
739: slrflag++;
740: break;
741: case 1:
742: slrflag++;
743: altarg = sb;
744: break;
745: default:
746: break;
747: }
748: goto S1;
749: }
750:
751: S1:
752: switch (*sb) {
753:
754: case ' ':
755: case '\t':
756: case '\0':
757: goto OUT; /* end of token */
758:
759: case '\\':
1.17 millert 760: INC_CHKCURSOR(sb);
761: goto S2; /* slurp next character */
1.1 deraadt 762:
763: case '"':
1.17 millert 764: INC_CHKCURSOR(sb);
765: goto S3; /* slurp quoted string */
1.1 deraadt 766:
767: default:
1.17 millert 768: *ap = *sb; /* add character to token */
769: ap++;
770: INC_CHKCURSOR(sb);
1.1 deraadt 771: got_one = 1;
772: goto S1;
773: }
774:
775: S2:
776: switch (*sb) {
777:
778: case '\0':
779: goto OUT;
780:
781: default:
1.17 millert 782: *ap = *sb;
783: ap++;
784: INC_CHKCURSOR(sb);
1.1 deraadt 785: got_one = 1;
786: goto S1;
787: }
788:
789: S3:
790: switch (*sb) {
791:
792: case '\0':
793: goto OUT;
794:
795: case '"':
1.17 millert 796: INC_CHKCURSOR(sb);
797: goto S1;
1.1 deraadt 798:
799: default:
1.17 millert 800: *ap = *sb;
801: ap++;
802: INC_CHKCURSOR(sb);
1.1 deraadt 803: got_one = 1;
804: goto S3;
805: }
806:
807: OUT:
808: if (got_one)
809: *ap++ = '\0';
810: argbase = ap; /* update storage pointer */
811: stringbase = sb; /* update scan pointer */
812: if (got_one) {
813: return (tmp);
814: }
815: switch (slrflag) {
816: case 0:
817: slrflag++;
818: break;
819: case 1:
820: slrflag++;
821: altarg = (char *) 0;
822: break;
823: default:
824: break;
825: }
826: return ((char *)0);
827: }
828:
829: /*
830: * Help command.
831: * Call each command handler with argc == 0 and argv[0] == name.
832: */
833: void
1.58 deraadt 834: help(int argc, char *argv[])
1.1 deraadt 835: {
836: struct cmd *c;
837:
838: if (argc == 1) {
1.17 millert 839: StringList *buf;
1.1 deraadt 840:
1.17 millert 841: buf = sl_init();
1.30 deraadt 842: fprintf(ttyout, "%sommands may be abbreviated. Commands are:\n\n",
1.17 millert 843: proxy ? "Proxy c" : "C");
844: for (c = cmdtab; c < &cmdtab[NCMDS]; c++)
845: if (c->c_name && (!proxy || c->c_proxy))
846: sl_add(buf, c->c_name);
847: list_vertical(buf);
848: sl_free(buf, 0);
1.1 deraadt 849: return;
850: }
1.17 millert 851:
1.18 millert 852: #define HELPINDENT ((int) sizeof("disconnect"))
1.17 millert 853:
1.1 deraadt 854: while (--argc > 0) {
855: char *arg;
1.17 millert 856:
1.1 deraadt 857: arg = *++argv;
858: c = getcmd(arg);
859: if (c == (struct cmd *)-1)
1.30 deraadt 860: fprintf(ttyout, "?Ambiguous help command %s\n", arg);
1.1 deraadt 861: else if (c == (struct cmd *)0)
1.30 deraadt 862: fprintf(ttyout, "?Invalid help command %s\n", arg);
1.1 deraadt 863: else
1.30 deraadt 864: fprintf(ttyout, "%-*s\t%s\n", HELPINDENT,
1.1 deraadt 865: c->c_name, c->c_help);
866: }
1.17 millert 867: }
1.77 martynas 868: #endif /* !SMALL */
1.17 millert 869:
870: void
1.58 deraadt 871: usage(void)
1.17 millert 872: {
1.92 lteo 873: fprintf(stderr, "usage: "
1.70 martynas 874: #ifndef SMALL
1.92 lteo 875: "%1$s [-46AadEegimnptVv] [-D title] [-k seconds] [-P port] "
1.87 deraadt 876: "[-r seconds]\n"
877: " [-s srcaddr] [host [port]]\n"
1.92 lteo 878: " %1$s [-C] [-o output] [-s srcaddr]\n"
879: " ftp://[user:password@]host[:port]/file[/] ...\n"
880: " %1$s [-C] [-c cookie] [-o output] [-S ssl_options] "
1.84 haesbaer 881: "[-s srcaddr]\n"
1.88 lteo 882: " [-U useragent] "
1.92 lteo 883: "http[s]://[user:password@]host[:port]/file ...\n"
884: " %1$s [-C] [-o output] [-s srcaddr] file:file ...\n"
885: " %1$s [-C] [-o output] [-s srcaddr] host:/file[/] ...\n",
1.69 martynas 886: #else /* !SMALL */
1.92 lteo 887: "%1$s [-o output] ftp://[user:password@]host[:port]/file[/] ...\n"
888: " %1$s [-o output] http://host[:port]/file ...\n"
889: " %1$s [-o output] file:file ...\n"
890: " %1$s [-o output] host:/file[/] ...\n",
1.69 martynas 891: #endif /* !SMALL */
1.92 lteo 892: __progname);
1.17 millert 893: exit(1);
1.1 deraadt 894: }
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