masqmail
annotate admin/guess-hostname @ 331:e507c854a63e
Security fix! Correct handling of seteuid() return value
See Debian bug #638002, reported by John Lightsey.
When possible the (already available) set_euidgid() function is used.
Additionally, it is unnecessary to change the identity when writing
into an already open file descriptor.
This should fix the problem.
| author | markus schnalke <meillo@marmaro.de> |
|---|---|
| date | Sat, 27 Aug 2011 16:19:07 +0200 |
| parents | 92b58989a09e |
| children |
| rev | line source |
|---|---|
| meillo@160 | 1 #!/bin/sh |
| meillo@160 | 2 # |
| meillo@160 | 3 # try several ways to guess the hostname |
| meillo@162 | 4 # earlier output lines are probably better |
| meillo@160 | 5 |
| meillo@160 | 6 ( |
| meillo@160 | 7 |
| meillo@160 | 8 # this is what Debian uses |
| meillo@160 | 9 cat /etc/mailname |
| meillo@160 | 10 |
| meillo@162 | 11 # probably a good value on GNU/Linux |
| meillo@162 | 12 hostname -f |
| meillo@162 | 13 |
| meillo@160 | 14 # this is often the short hostname |
| meillo@160 | 15 cat /etc/hostname |
| meillo@160 | 16 |
| meillo@162 | 17 # often the short hostname, but widely available |
| meillo@162 | 18 hostname |
| meillo@162 | 19 |
| meillo@160 | 20 # this file was mentioned on the Internet |
| meillo@160 | 21 cat /etc/HOSTNAME |
| meillo@160 | 22 |
| meillo@218 | 23 ) 2>/dev/null | uniq |
| meillo@218 | 24 |
| meillo@218 | 25 exit 0 |