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Code Issues Releases Activity

Setting .nofinger will not hide you from root.

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This commit is contained in:
Diomidis Spinellis 2005-09-19 10:11:47 +00:00
parent 8f3d766b5d
commit d2e4ea2a51
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=150316
4 changed files with 6 additions and 1 deletions
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1
usr.bin/finger/extern.h
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@ -48,6 +48,7 @@ extern time_t now;
extern int oflag;
extern int pplan; /* don't show .plan/.project */
extern int Tflag;
extern int invoker_root; /* Invoked by root */
void enter_lastlog(PERSON *);
PERSON *enter_person(struct passwd *);

1
usr.bin/finger/finger.1
View File

@ -202,6 +202,7 @@ option is the only option that may be passed to a remote machine.
If the file
.Pa .nofinger
exists in the user's home directory,
and the program is not run with superuser privileges,
.Nm
behaves as if the user in question does not exist.
.Pp

2
usr.bin/finger/finger.c
View File

@ -95,6 +95,7 @@ int entries, gflag, kflag, lflag, mflag, pplan, sflag, oflag, Tflag;
sa_family_t family = PF_UNSPEC;
int d_first = -1;
char tbuf[1024];
int invoker_root = 0;
static void loginlist(void);
static int option(int, char **);
@ -168,6 +169,7 @@ main(int argc, char **argv)
static char myname[] = "finger";
if (getuid() == 0 || geteuid() == 0) {
invoker_root = 1;
if ((pw = getpwnam(UNPRIV_NAME)) && pw->pw_uid > 0) {
setgid(pw->pw_gid);
setuid(pw->pw_uid);

3
usr.bin/finger/util.c
View File

@ -408,6 +408,7 @@ userinfo(PERSON *pn, struct passwd *pw)
/*
* Is this user hiding from finger?
* If ~<user>/.nofinger exists, return 1 (hide), else return 0 (nohide).
* Nobody can hide from root.
*/
int
@ -416,7 +417,7 @@ hide(struct passwd *pw)
struct stat st;
char buf[MAXPATHLEN];
if (!pw->pw_dir)
if (invoker_root || !pw->pw_dir)
return 0;
snprintf(buf, sizeof(buf), "%s/%s", pw->pw_dir, _PATH_NOFINGER);