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- /*
- * Copyright (c) 1985, 1989 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms are permitted
- * provided that the above copyright notice and this paragraph are
- * duplicated in all such forms and that any documentation,
- * advertising materials, and other materials related to such
- * distribution and use acknowledge that the software was developed
- * by the University of California, Berkeley. The name of the
- * University may not be used to endorse or promote products derived
- * from this software without specific prior written permission.
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
- */
-
- #ifndef lint
- char copyright[] =
- "@(#) Copyright (c) 1985, 1989 Regents of the University of California.\n\
- All rights reserved.\n";
- #endif /* not lint */
-
- /*
- * BFTP User Program -- Command Interface.
- * based on 5.13 (Berkeley) 3/14/89 "main.c"
- *
- * Modified at ISI 3/9/90 -- ucb_cp.c
- */
-
- #include <stdio.h>
- #include <ctype.h>
- #include <sys/signal.h>
- #include <sys/types.h>
- #include <sys/time.h>
- #include <netinet/in.h>
- #include <arpa/inet.h>
- #include <netdb.h>
- #include <sys/socket.h>
-
- #include <sys/ioctl.h>
- #include <arpa/ftp.h>
-
- #include <errno.h>
- #include <pwd.h>
-
- #include "ucb_cp.h"
-
- /* This section is from main.c 5.13 (Berkeley) 3/14/89 */
-
- extern struct cmd cmdtab[];
- extern char *help_preamble;
- extern int NCMDS;
-
- intr()
- {
- longjmp(toplevel, 1);
- }
-
- do_main()
- {
- int top;
-
- fromatty = isatty(fileno(stdin));
-
- top = setjmp(toplevel) == 0;
- if (top) {
- (void) signal(SIGINT, intr);
- }
- for (;;) {
- cmdscanner(top);
- top = 1;
- }
- }
-
- /*
- * Command parser.
- */
- cmdscanner(top)
- int top;
- {
- char *cp;
- register struct cmd *c;
- struct cmd *getcmd();
-
- if (!top)
- (void) putchar('\n');
- for (;;) {
- if (fromatty) {
- printf("BFTP> ");
- (void) fflush(stdout);
- }
- if (gets(line) == 0) {
- if (feof(stdin) || ferror(stdin))
- quit();
- break;
- }
- if (line[0] == 0)
- break;
- makeargv();
- if (margc == 0) {
- continue;
- }
- c = getcmd(margv[0]);
- if (c == (struct cmd *)-1) {
- printf("?Ambiguous command\n");
- continue;
- }
- if (c == 0) {
- /* ISI addition */
- for (cp = margv[0]; *cp; cp++)
- if (*cp == '?') {
- strcpy(line, "help");
- makeargv();
- help(margc, margv);
- break;
- }
- if (!*cp)
- /* ************ */
- printf("?Invalid command\n");
- continue;
- }
- (*c->c_handler)(margc, margv);
- if (c->c_handler != help)
- break;
- }
- (void) signal(SIGINT, intr);
- }
-
- struct cmd *
- getcmd(name)
- register char *name;
- {
- register char *p, *q;
- register struct cmd *c, *found;
- register int nmatches, longest;
-
- longest = 0;
- nmatches = 0;
- found = 0;
- for (c = cmdtab; p = c->c_name; c++) {
- for (q = name; *q == *p++; q++)
- if (*q == 0) /* exact match? */
- return (c);
- if (!*q) { /* the name was a prefix */
- if (q - name > longest) {
- longest = q - name;
- nmatches = 1;
- found = c;
- } else if (q - name == longest)
- nmatches++;
- }
- }
- if (nmatches > 1)
- return ((struct cmd *)-1);
- return (found);
- }
-
- /*
- * Slice a string up into argc/argv.
- */
-
- int slrflag;
-
- makeargv()
- {
- char **argp;
- char *slurpstring();
-
- margc = 0;
- argp = margv;
- stringbase = line; /* scan from first of buffer */
- argbase = argbuf; /* store from first of buffer */
- slrflag = 0;
- while (*argp++ = slurpstring())
- margc++;
- }
-
- /*
- * Parse string into argbuf;
- * implemented with FSM to
- * handle quoting and strings
- */
- char *
- slurpstring()
- {
- int got_one = 0;
- register char *sb = stringbase;
- register char *ap = argbase;
- char *tmp = argbase; /* will return this if token found */
-
- if (*sb == '!' || *sb == '$') { /* recognize ! as a token for shell */
- switch (slrflag) { /* and $ as token for macro invoke */
- case 0:
- slrflag++;
- stringbase++;
- return ((*sb == '!') ? "!" : "$");
- /* NOTREACHED */
- case 1:
- slrflag++;
- altarg = stringbase;
- break;
- default:
- break;
- }
- }
-
- S0:
- switch (*sb) {
-
- case '\0':
- goto OUT;
-
- case ' ':
- case '\t':
- sb++; goto S0;
-
- default:
- switch (slrflag) {
- case 0:
- slrflag++;
- break;
- case 1:
- slrflag++;
- altarg = sb;
- break;
- default:
- break;
- }
- goto S1;
- }
-
- S1:
- switch (*sb) {
-
- case ' ':
- case '\t':
- case '\0':
- goto OUT; /* end of token */
-
- case '\\':
- sb++; goto S2; /* slurp next character */
-
- case '"':
- sb++; goto S3; /* slurp quoted string */
-
- default:
- *ap++ = *sb++; /* add character to token */
- got_one = 1;
- goto S1;
- }
-
- S2:
- switch (*sb) {
-
- case '\0':
- goto OUT;
-
- default:
- *ap++ = *sb++;
- got_one = 1;
- goto S1;
- }
-
- S3:
- switch (*sb) {
-
- case '\0':
- goto OUT;
-
- case '"':
- sb++; goto S1;
-
- default:
- *ap++ = *sb++;
- got_one = 1;
- goto S3;
- }
-
- OUT:
- if (got_one)
- *ap++ = '\0';
- argbase = ap; /* update storage pointer */
- stringbase = sb; /* update scan pointer */
- if (got_one) {
- return(tmp);
- }
- switch (slrflag) {
- case 0:
- slrflag++;
- break;
- case 1:
- slrflag++;
- altarg = (char *) 0;
- break;
- default:
- break;
- }
- return((char *)0);
- }
-
- /*
- * Help command.
- * Call each command handler with argc == 0 and argv[0] == name.
- */
- help(argc, argv)
- int argc;
- char *argv[];
- {
- register struct cmd *c;
-
- if (argc == 1) {
- register int i, j, w, k;
- int columns, width = 0, lines;
- extern int NCMDS;
-
- printf(help_preamble);
- for (c = cmdtab; c < &cmdtab[NCMDS]; c++) {
- int len = strlen(c->c_name);
-
- if (len > width)
- width = len;
- }
- width = (width + 8) &~ 7;
- columns = 80 / width;
- if (columns == 0)
- columns = 1;
- lines = (NCMDS + columns - 1) / columns;
- for (i = 0; i < lines; i++) {
- for (j = 0; j < columns; j++) {
- c = cmdtab + j * lines + i;
- if (c->c_name) {
- printf("%s", c->c_name);
- }
- if (c + lines >= &cmdtab[NCMDS]) {
- printf("\n");
- break;
- }
- w = strlen(c->c_name);
- while (w < width) {
- w = (w + 8) &~ 7;
- (void) putchar('\t');
- }
- }
- }
- return;
- }
- while (--argc > 0) {
- register char *arg;
- arg = *++argv;
- c = getcmd(arg);
- if (c == (struct cmd *)-1)
- printf("?Ambiguous help command %s\n", arg);
- else if (c == (struct cmd *)0)
- printf("?Invalid help command %s\n", arg);
- else
- printf("%-*s %s\n", HELPINDENT,
- c->c_name, c->c_help);
- }
- }
-