Removed a buffer overflow in args().
While I'm here, fix a bug with 'register' in conjunction with setjmp(), staticize and do some -Wall cleaning.
This commit is contained in:
Eivind Eklund
parent
0fa2443f0e
commit
a8b28da029
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=28788
@ -36,7 +36,7 @@
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static char sccsid[] = "@(#)cmds.c 8.1 (Berkeley) 6/6/93";
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#endif
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static const char rcsid[] =
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"$Id: cmds.c,v 1.4 1997/08/22 22:14:15 imp Exp $";
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"$Id: cmds.c,v 1.5 1997/08/25 05:02:09 imp Exp $";
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#endif /* not lint */
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#include "tipconf.h"
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@ -46,6 +46,7 @@ static const char rcsid[] =
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <err.h>
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#include <libutil.h>
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#include <stdio.h>
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/*
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@ -61,30 +62,32 @@ char *sep[] = { "second", "minute", "hour" };
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static char *argv[10]; /* argument vector for take and put */
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void timeout(); /* timeout function called on alarm */
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void stopsnd(); /* SIGINT handler during file transfers */
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void intcopy(); /* interrupt routine for file transfers */
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int anyof __P((char *, char *));
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static void stopsnd(); /* SIGINT handler during file transfers */
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static void intcopy(); /* interrupt routine for file transfers */
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void suspend __P((char));
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void genbrk __P((void));
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void tandem __P((char *));
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void variable __P((void));
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void prtime __P((char *, time_t));
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int args __P((char *, char **));
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void execute __P((char *));
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void finish __P((void));
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void tipabort __P((char *));
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void chdirectory __P((void));
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void shell __P((void));
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void send __P((char));
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void cu_put __P((char));
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void transmit __P((FILE *, char *, char *));
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void sendfile __P((char));
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void pipefile __P((void));
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void transfer __P((char *, int, char *));
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void xfer __P((char *, int, char *));
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void cu_take __P((char));
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void getfl __P((char));
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static int anyof __P((char *, char *));
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static void tandem __P((char *));
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static void prtime __P((char *, time_t));
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static int args __P((char *, char **, int));
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static void execute __P((char *));
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static void send __P((char));
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static void transmit __P((FILE *, char *, char *));
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static void transfer __P((char *, int, char *));
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static void xfer __P((char *, int, char *));
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void
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usedefchars ()
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{
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@ -167,7 +170,7 @@ cu_take(cc)
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if (prompt("[take] ", copyname, sizeof(copyname)))
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return;
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if ((argc = args(copyname, argv)) < 1 || argc > 2) {
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if ((argc = args(copyname, argv, sizeof(argv)/sizeof(argv[0]))) < 1 || argc > 2) {
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printf("usage: <take> from [to]\r\n");
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return;
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}
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@ -182,15 +185,15 @@ cu_take(cc)
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xfer(line, fd, "\n___tip_end_of_file_marker___\n");
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}
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extern jmp_buf intbuf;
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static jmp_buf intbuf;
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void
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static void
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xfer(buf, fd, eofchars)
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char *buf, *eofchars;
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{
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register int ct;
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int ct;
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char c, *match;
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register int cnt, eof, v;
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int cnt, eof, v;
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time_t start;
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sig_t f;
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char r;
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@ -266,12 +269,11 @@ xfer(buf, fd, eofchars)
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(void)fclose(ff);
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}
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static jmp_buf intbuf;
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/*
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* Bulk transfer routine --
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* used by getfl(), cu_take(), and pipefile()
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*/
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void
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static void
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transfer(buf, fd, eofchars)
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char *buf, *eofchars;
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{
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@ -346,7 +348,6 @@ pipefile()
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int cpid, pdes[2];
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char buf[256];
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int status, p;
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extern int errno;
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if (prompt("Local command? ", buf, sizeof(buf)))
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return;
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@ -433,7 +434,7 @@ sendfile(cc)
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* Bulk transfer routine to remote host --
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* used by sendfile() and cu_put()
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*/
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void
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static void
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transmit(fd, eofchars, command)
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FILE *fd;
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char *eofchars, *command;
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@ -541,7 +542,7 @@ cu_put(cc)
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if (prompt("[put] ", copyname, sizeof(copyname)))
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return;
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if ((argc = args(copyname, argv)) < 1 || argc > 2) {
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if ((argc = args(copyname, argv, sizeof(argv)/sizeof(argv[0]))) < 1 || argc > 2) {
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printf("usage: <put> from [to]\r\n");
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return;
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}
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@ -563,7 +564,7 @@ cu_put(cc)
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* FTP - send single character
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* wait for echo & handle timeout
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*/
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void
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static void
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send(c)
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char c;
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{
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@ -840,7 +841,7 @@ intcopy()
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longjmp(intbuf, 1);
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}
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void
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static void
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execute(s)
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char *s;
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{
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@ -854,15 +855,16 @@ execute(s)
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execl(value(SHELL), cp, "-c", s, 0);
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}
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int
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args(buf, a)
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static int
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args(buf, a, num)
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char *buf, *a[];
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int num;
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{
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register char *p = buf, *start;
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register char **parg = a;
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register int n = 0;
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do {
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while (*p && n < num) {
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while (*p && (*p == ' ' || *p == '\t'))
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p++;
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start = p;
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@ -874,12 +876,11 @@ args(buf, a)
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parg++, n++;
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if (*p)
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*p++ = '\0';
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} while (*p);
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}
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return(n);
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}
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void
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static void
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prtime(s, a)
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char *s;
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time_t a;
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@ -946,7 +947,7 @@ variable()
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/*
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* Turn tandem mode on or off for remote tty.
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*/
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void
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static void
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tandem(option)
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char *option;
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{
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@ -1079,7 +1080,7 @@ expand(name)
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* Are any of the characters in the two strings the same?
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*/
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int
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static int
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anyof(s1, s2)
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register char *s1, *s2;
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{
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@ -42,7 +42,7 @@ static const char copyright[] =
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static char sccsid[] = "@(#)tip.c 8.1 (Berkeley) 6/6/93";
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#endif
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static const char rcsid[] =
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"$Id: tip.c,v 1.4 1997/08/22 22:14:15 imp Exp $";
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"$Id: tip.c,v 1.5 1997/08/25 05:02:10 imp Exp $";
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#endif /* not lint */
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/*
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@ -58,6 +58,8 @@ void ttysetup (int speed);
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*/
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#include <err.h>
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#include <sys/types.h>
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#include <libutil.h>
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#include "tipconf.h"
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#include "tip.h"
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#include "pathnames.h"
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@ -157,7 +159,7 @@ main(argc, argv)
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for (p = system; *p; p++)
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*p = '\0';
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PN = PNbuf;
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(void)sprintf(sbuf, "tip%d", BR);
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(void)sprintf(sbuf, "tip%ld", BR);
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system = sbuf;
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notnumber:
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@ -713,5 +715,5 @@ setparity(defparity)
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(void) fflush(stderr);
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}
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for (i = 0; i < 0200; i++)
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partab[i] = evenpartab[i] ^ flip | set & clr;
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partab[i] = (evenpartab[i] ^ flip) | (set & clr);
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}
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