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Code Issues Releases Activity

o Use snprintf rather than sprintf.

Browse Source 
o Revert gid to caller before a shell so we can run setgid.
o minor style nits to make bruce happy :-)
o use strncpy correctly.
This commit is contained in:
Warner Losh 1998-06-09 04:28:05 +00:00
parent fae4b464e3
commit f34c49eb54
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=36791
3 changed files with 12 additions and 11 deletions
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10
usr.bin/tip/tip/cmds.c
View File

@ -36,7 +36,7 @@
static char sccsid[] = "@(#)cmds.c 8.1 (Berkeley) 6/6/93";
#endif
static const char rcsid[] =
"$Id: cmds.c,v 1.5 1997/08/25 05:02:09 imp Exp $";
"$Id: cmds.c,v 1.6 1997/08/26 10:25:16 eivind Exp $";
#endif /* not lint */
#include "tipconf.h"
@ -181,7 +181,7 @@ cu_take(cc)
printf("\r\n%s: cannot create\r\n", argv[1]);
return;
}
(void)sprintf(line, "cat %s ; echo \"\" ; echo ___tip_end_of_file_marker___", argv[0]);
(void)snprintf(line, sizeof(line), "cat %s ; echo \"\" ; echo ___tip_end_of_file_marker___", argv[0]);
xfer(line, fd, "\n___tip_end_of_file_marker___\n");
}
@ -554,9 +554,9 @@ cu_put(cc)
return;
}
if (boolean(value(ECHOCHECK)))
sprintf(line, "cat>%s\r", argv[1]);
snprintf(line, sizeof(line), "cat>%s\r", argv[1]);
else
sprintf(line, "stty -echo;cat>%s;stty echo\r", argv[1]);
snprintf(line, sizeof(line), "stty -echo;cat>%s;stty echo\r", argv[1]);
transmit(fd, "\04", line);
}
@ -1027,7 +1027,7 @@ expand(name)
/* signal(SIGINT, sigint) */
return(name);
}
sprintf(cmdbuf, "echo %s", name);
snprintf(cmdbuf, sizeof(cmdbuf), "echo %s", name);
if ((pid = vfork()) == 0) {
Shell = value(SHELL);
if (Shell == NOSTR)

4
usr.bin/tip/tip/cu.c
View File

@ -36,7 +36,7 @@
static char sccsid[] = "@(#)cu.c 8.1 (Berkeley) 6/6/93";
#endif
static const char rcsid[] =
"$Id$";
"$Id: cu.c,v 1.2 1997/08/18 07:16:02 charnier Exp $";
#endif /* not lint */
#include "tipconf.h"
@ -110,7 +110,7 @@ cumain(argc, argv)
* The "cu" host name is used to define the
* attributes of the generic dialer.
*/
(void)sprintf(sbuf, "cu%d", BR);
(void)snprintf(sbuf, sizeof(sbuf), "cu%d", BR);
if ((i = hunt(sbuf)) == 0) {
printf("all ports busy\n");
exit(3);

9
usr.bin/tip/tip/tip.c
View File

@ -42,7 +42,7 @@ static const char copyright[] =
static char sccsid[] = "@(#)tip.c 8.1 (Berkeley) 6/6/93";
#endif
static const char rcsid[] =
"$Id: tip.c,v 1.6 1997/08/26 10:25:19 eivind Exp $";
"$Id: tip.c,v 1.7 1997/09/18 14:07:17 phk Exp $";
#endif /* not lint */
/*
@ -153,13 +153,13 @@ main(argc, argv)
* Copy the number then stomp on the original (in case the number
* is private, we don't want 'ps' or 'w' to find it).
*/
if (strlen(system) > sizeof PNbuf - 1)
if (strlen(system) > sizeof(PNbuf - 1))
errx(1, "phone number too long (max = %d bytes)", sizeof PNbuf - 1);
strncpy( PNbuf, system, sizeof PNbuf - 1 );
strncpy(PNbuf, system, sizeof(PNbuf - 1));
for (p = system; *p; p++)
*p = '\0';
PN = PNbuf;
(void)sprintf(sbuf, "tip%ld", BR);
(void)snprintf(sbuf, sizeof(sbuf), "tip%ld", BR);
system = sbuf;
notnumber:
@ -333,6 +333,7 @@ daemon_uid()
void
shell_uid()
{
setegid(gid);
seteuid(uid);
}