hostsreader_get() used to assign the IP address to both `name` and `ip`
fields in `struct hostsreader`, which led to proxychains effectively
ignoring the contents of /etc/hosts.
this should fix the build of the recently added ipv6 code on MacOS X,
OpenBSD and eventually FreeBSD.
closes#83closes#85
thanks to @cam13 and @vonnyfly for reporting/testing.
config.mak is autogenerated by the configure script since a long time.
there's no need to supply the example anymore, and it appears a lot
of people are looking into the directory expecting to find a binary
distribution.
if an ipv4-mapped ipv6 address is detected, the ip is converted
into v4 format because it may actually be one of our remote dns ips.
it was reported that a program called "maven", when getting handed our
fake ips in the remote dns subnet, converts the ip to v6 prior to calling
connect():
[proxychains] Strict chain ... 127.0.0.1:1080 ... ::ffff:224.0.0.1:443
<--socket error or timeout!
fixes#77
only basic testing was done (with 2 socks5 proxies listening on ::1)
but seems to work as intended.
ipv6 support for the hostsreader (/etc/hosts) is not implemented so far.
since "user" always points to a statically allocated string buffer,
the test for if(user)... was bogus.
use ulen instead.
this bug should only be visible on socks servers that require auth
if username was not passed, so it was probably not really an issue.
the allocatorthread got pointers to RAM which were reallocated
behind the back, and if realloc() couldn't grow in-place, lead
to segfaults in applications that do a lot of DNS-lookups such
as webbrowsers.
closes#66closes#31
thanks to @ravomavain for tracking down the issue.
working directly with the passed variables could lead to bugs when
some lines in the hosts file aren't well-formed and the loop is taken
several times while the buf vars are already modified.
the hostentdb introduced between 4.2 and 4.3
(via af5c6f0c6a )
had several issues:
- it caused breakage on FreeBSD and was commented out there
- prevented usage of the hostdb when proxy_dns was turned off
(issue #42)
- required dynamic memory allocation which was accessed from several
threads
- wouldnt reflect changes to the hosts file made during program run
the only sensible solution is to remove the hostentdb and replace it
with a home-grown hosts parser (we can't use gethostent() since
that would mess up the gethostent()-state from different threads).
the new parser used here is deliberately held simple and only meant
to provide the user with means to reference hardcoded ipv4 addresses
via his hosts file.
fixes#42
