Re: [fetchmail-users] fetchmail and socks5

[<Joc...@Ha...>]

>>>>> "RMG" == Rob MacGregor writes:

On 3/8/07, Jochen Hayek wrote:

    >> A while ago I started experiments with socks5 (-> dante)
    >> and created a /etc/socks.conf on my local host and I set up a socks5 proxy server on a neighbour box.
    >> 
    >> I did not instruct my local fetchmail to make use of my socks5 proxy
    >> and I also wasn't aware, that my local fetchmail actually does us it,
    >> but in a situation, when that proxy server on the neighbour box temporarily did not run,
    >> I finally noticed (using "strace"), that fetchmail contacted my socks5 proxy.
    >> 
    >> 
    >> I did some rtfm-ing,
    >> but I did not find a way to instruct fetchmail to *not* attempt contacting my socks5 proxy.

    RMG> Fetchmail has *no* native socks support.  

Currently I am convinced, your statement is incorrect.

But I rather have some sympathy for your suspicion,
as this magical and undescribed feature of fetchmail is certainly rather weird,
and fetchmail shouldn't behave like that.

Have you ever run fetchmail in a socks5 ready environment?
Give yourself a try and let's continue discussing the matter than!

    RMG> You're either running it
    RMG> with a socks wrapper (runsock/socksify)
    RMG> or have added this yourself (eg via ld.so.preload).

No, I don't, nothing like that.
(No socks wrapper, no LD_PRELOAD, no /etc/ld.so.preload, no ...)
I told you above: "I did not instruct my local fetchmail to make use of my socks5 proxy"
I mean, what I write.
And you read my statement, didn't you?!?

    RMG> It's hard to say though as you've provided no
    RMG> real information (version numbers, contents of configuration files,
    RMG> command lines used, anything really).

Alright, alright, yet another doubting Thomas ;-)

Can you see "SOCKS" here:

    [2007-03-15 14:11:49] johayek@HayekJ $ fetchmail --version
    This is fetchmail release 6.3.2+POP2+IMAP-GSS+RPA+NTLM+SDPS+SSL+OPIE+SOCKS+NLS.

    Copyright (C) 2002, 2003 Eric S. Raymond
    Copyright (C) 2004 Matthias Andree, Eric S. Raymond, Rob F. Funk, Graham Wilson
    Copyright (C) 2005 Matthias Andree, Sunil Shetye
    Copyright (C) 2006 Matthias Andree
    Fetchmail comes with ABSOLUTELY NO WARRANTY. This is free software, and you
    are welcome to redistribute it under certain conditions. For details,
    please see the file COPYING in the source or documentation directory.

    Fallback MDA: (none)
    Linux HayekJ 2.6.16.21-0.13-default #1 Mon Jul 17 17:22:44 UTC 2006 i686 i686 i386 GNU/Linux
    Taking options from command line and /home/jochen_hayek/.fetchmailrc
    Idfile is /home/jochen_hayek/.fetchids
    Fetchmail will show progress dots even in logfiles.
    Fetchmail will forward misaddressed multidrop messages to johayek.
    Fetchmail will direct error mail to the postmaster.


    close(3)                                = 0
    [...]
    open("/etc/socks.conf", O_RDONLY)       = 4
    [...]



And here we have some config file extract:

      skip shuttle.de
        via   "blablabla.shuttle.de" with proto IMAP and no dns tracepolls
        user "jh9999" there with password "PASSWORD" is johayek here
        options
        ssl
          sslproto tls1
          sslfingerprint "D9:83:30:EA:3B:A5:02:A2:D6:72:1D:B7:AB:C3:30:CB"
        fetchall
        stripcr
        dropstatus
        dropdelivered
        warnings 3600
        expunge 20
        folders imap/folder-misc/_to-be-downloaded,imap/folder/prio-4
        properties "'mailbox_from':'INBOX','mailbox_dir':'imap','mailbox_dir_separator':'/'"
        antispam 571
        no rewrite
        pass8bits


And here we have some "strace" output:

    [2007-03-15 13:30:59] johayek@HayekJ $ strace fetchmail shuttle.de
    execve("/usr/bin/fetchmail", ["fetchmail", "shuttle.de"], [/* 112 vars */]) = 0
    brk(0)                                  = 0x808d000
    mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7fb3000
    access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or directory)
    open("/usr/local/lib/tls/i686/sse2/libsocks.so.0", O_RDONLY) = -1 ENOENT (No such file or directory)
    open("/usr/local/lib/tls/i686/libsocks.so.0", O_RDONLY) = -1 ENOENT (No such file or directory)
    open("/usr/local/lib/tls/sse2/libsocks.so.0", O_RDONLY) = -1 ENOENT (No such file or directory)
    open("/usr/local/lib/tls/libsocks.so.0", O_RDONLY) = -1 ENOENT (No such file or directory)
    open("/usr/local/lib/i686/sse2/libsocks.so.0", O_RDONLY) = -1 ENOENT (No such file or directory)
    open("/usr/local/lib/i686/libsocks.so.0", O_RDONLY) = -1 ENOENT (No such file or directory)
    open("/usr/local/lib/sse2/libsocks.so.0", O_RDONLY) = -1 ENOENT (No such file or directory)
    open("/usr/local/lib/libsocks.so.0", O_RDONLY) = -1 ENOENT (No such file or directory)
    open("/usr/lib/tls/i686/sse2/libsocks.so.0", O_RDONLY) = -1 ENOENT (No such file or directory)
    open("/usr/lib/tls/i686/libsocks.so.0", O_RDONLY) = -1 ENOENT (No such file or directory)
    open("/usr/lib/tls/sse2/libsocks.so.0", O_RDONLY) = -1 ENOENT (No such file or directory)
    open("/usr/lib/tls/libsocks.so.0", O_RDONLY) = -1 ENOENT (No such file or directory)
    open("/usr/lib/i686/sse2/libsocks.so.0", O_RDONLY) = -1 ENOENT (No such file or directory)
    open("/usr/lib/i686/libsocks.so.0", O_RDONLY) = -1 ENOENT (No such file or directory)
    open("/usr/lib/sse2/libsocks.so.0", O_RDONLY) = -1 ENOENT (No such file or directory)
    open("/usr/lib/libsocks.so.0", O_RDONLY) = 3
    read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0\3\0\1\0\0\0 O\0\000"..., 512) = 512
    [...]
    open("/etc/socks.conf", O_RDONLY)       = 4
    fstat64(4, {st_mode=S_IFREG|0644, st_size=4374, ...}) = 0
    mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb7bb3000
    read(4, "# $Id: socks.conf,v 1.28 2001/12"..., 8192) = 4374
    read(4, "", 4096)                       = 0
    [...]