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<TITLE>MBSE BBS Programs - mbcico - The Fidonet mailer.</TITLE>
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<BLOCKQUOTE>
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<h5>Last update 03-Mar-2002</h5>
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<P>&nbsp;<P>
<H1>mbcico - The Fidonet mailer.</H1>
<P>
This is work in progress....
<P>
<h3>Synopsis.</H3>
<P>
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<code>-a&lt;inetaddr&gt; -l&lt;ttydevice&gt; &lt;node&gt; ...</code><br>
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<code>-n&lt;phone&gt;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</code>forced phone number<br>
<code>-l&lt;ttydevice&gt;&nbsp;</code>forced tty device<br>
<code>-t&lt;tcpmode&gt;&nbsp;&nbsp;&nbsp;</code>telnet TCP/IP mode, must be one of ifc|itn|ibn, forces TCP/IP<br>
<code>-a&lt;inetaddr&gt;&nbsp;&nbsp;</code>supply internet hostname if not in nodelist<br>
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<code> &lt;node&gt;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</code>should be in domain form, e.g. f11.n22.z3<br>
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<code>-h&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</code>show this help message<br>
<br>
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&nbsp;or: <code>mbcico tsync|yoohoo|**EMSI_INQC816|-t ibn|-t ifc|-t itn</code> (this is answer mode)
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<P>&nbsp;<P>
<H3>Description.</H3>
<P>
<strong>mbcico</strong> stands for MBse "Internet - Fidonet Copy In /Copy Out",
this is a FidoNet(r) compatible transport agent. It is based on <strong>
ifcico</strong> written by Eugene G. Crosser, &lt;crosser@average.org&gt;,
2:5020/230@FidoNet. I changed the name of the program to make the difference
between <strong>ifcico</strong> and <strong>mbcico</strong>. Nowadays it is
quite different then ifcico.
<P>
Currently it supports FTS-0001, YooHoo/2U2 and EMSI handshake protocols,
Xmodem, Telink, Modem7, Hydra, SEAlink with and without overdrive and
crash recovery, Bark file and update requests, WaZoo protocols: DietIFNA,
plain Zmodem (aka ZedZip, EMSI flag "ZMO") and ZedZap, WaZoo file and
update requests (nodelist flag should be XA). WaZoo file and update requests
do also work with FTS-0001 sessions, this is supported by several well known DOS
mailers also.
Password protected requests and update requests are implemented (but not
yet full tested).
<P>
There is also a special protocol optimized to use over TCP/IP connections,
contributed by Stanislav Voronyi &lt;stas@uanet.kharkov.ua&gt;, it is
identiefied by EMSI proto code TCP (not registered) and nodelist flag IFC.
The default port is 60179. There is a telnet variant on this, the default
port is 23, and nodelist flag is ITN. The telnet variant is written by
T. Tanaka.
<P>
There is also a <strong>Binkp</strong> implementation, this is a
bi-directional TCP/IP protocol.
This protocol is prefferred over the IFC protocol because it is
more efficient. Nodelist flag is IBN, the default port is 24554, and the
nodelist request flag is XX. This Binkp implementation supports multiple
batches, however this is only tested against another <strong>mbcico.</strong>
I don't know if any other mailer supports this option, but it is documented
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in the spec's. (Irex uses it).
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<P>
Outbound directory structure is BinkleyTerm compatible, with domains and
point subdirectories (full 5d). There are separate "protected" and
"unprotected" inbound directories for the incoming sessions with the nodes
that are in your setup. Files received during outbound sessions are always
stored in the "protected" inbound.
<P>
"Magic" file request processors are executable files placed in the "magic"
directory. If a request is made for a file with matching name, the
executable from the "magic" directory is run, and its stdout output is mailed
to the requestor. Full requestor's address, in the form of "John Smith of
1:234/56/7" is passed to the executable in the command line. Non-executable
files in the magic directory contain the full names to magic filenames. The
magic NODELIST can thus point to the full path and filename of your latest
nodelist. These magic names are automatic maintained by the <strong>mbfido</strong>
program when the magic name is set in the .tic file that you receive.
<P>
To run <strong>mbcico</strong> in master mode, you need to make dialout
devices read/writeable for <strong>mbcico</strong>, and do the same for
the directory where your uucp locks are created (usually /var/locks).
<P>&nbsp;<P>
<h3>Answer Mode.</h3>
<P>
To make <strong>mbcico</strong> work in answer mode, you need <strong>
mgetty</strong> written by Gert Doering. <strong>mbcico</strong> must be
started with one of the following parameters:
<P><PRE>
FTS-0001 call: "/opt/mbse/bin/mbcico tsync"
FTS-0006 call: "/opt/mbse/bin/mbcico yoohoo"
EMSI call: "/opt/mbse/bin/mbcico **EMSI_....."
</PRE><P>
In the latter case the received EMSI packet should be passed whitout trailing
CR). To make this work <strong>mgetty</strong> must be compiled with the
-DFIDO option. Other getty programs might work.
<P>
To answer TCP/IP calls the following lines should be added to /etc/inetd.conf:
<P><PRE>
binkd stream tcp nowait mbse /opt/mbse/bin/mbcico mbcico -t ibn
tfido stream tcp nowait mbse /opt/mbse/bin/mbcico mbcico -t itn
fido stream tcp nowait mbse /opt/mbse/bin/mbcico mbcico -t ifc
</PRE><P>
If your system uses xinetd the file /etc/xinetd.d/mbsebbs could be:
<P><PRE>
#:MBSE BBS services are defined here.
service binkp
{
socket_type = stream
protocol = tcp
wait = no
user = mbse
instances = 10
server = /opt/mbse/bin/mbcico
server_args = -t ibn
}
service tfido
{
socket_type = stream
protocol = tcp
wait = no
user = mbse
instances = 10
server = /opt/mbse/bin/mbcico
server_args = -t itn
}
service fido
{
socket_type = stream
protocol = tcp
wait = no
user = mbse
instances = 10
server = /opt/mbse/bin/mbcico
server_args = -t ifc
}
</PRE><P>
In the file /etc/services the following lines must be present:
<P><PRE>
binkd 24554/tcp # mbcico IBN mode
tfido 60177/tcp # mbcico ITN mode
fido 60179/tcp # mbcico IFC mode
mbse 60180/tcp # MBSE BBS deamon
</PRE><P>
In this case I installed the ITN mode at port 60177 instead of 23 like most
sysops do.
<P>&nbsp;<P>
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<h3>Calling Mode.</h3>
<P>
You never need to call nodes with <b>mbcico</b> by hand, <b>mbtask</b> will
start <b>mbcico</b> with the right commandline.<BR>
<B>Note:</B> you should not call nodes with mbcico directly, let
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<b>mbtask</b> do the calling.
If you want to call a node make a <a href="mbout.html">poll</a> command.
<P>&nbsp;<P>
<h3>Environment.</H3>
<P>
In order to run the mbcico you need to set one global environment variable
<strong>$MBSE_ROOT</strong>
This variable must point to the root of the bbs directoy structure.
<P>&nbsp;<P>
<H3>Return Codes.</H3>
<P>
<pre>
0 - No errors
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1..32 - OS errors, SIGHUP, SIGKILL, etc.
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100 - Commandline error.
101 - Configuration error.
103 - Disk full.
108 - File transfer error.
111 - Node not in nodelist.
112 - Node may not be called (Hold, Down, not ZMH).
113 - Could not make connection.
114 - Cannot open tty port.
115 - Node is locked.
116 - No IP address.
117 - Unknown session type.
118 - Not Zone Mail Hour.
119 - Modem error.
120 - Not port available.
121 - Session error.
122 - EMSI session error.
123 - FTSC session error.
124 - Wazoo session error.
125 - YooHoo session error.
126 - Outbound scan error.
127 - Cannot poll.
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</pre>
These codes are also stored in status files for nodes, with the extension
of ".sts". These are small datafiles containing three decimal numbers.
<ol>
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<li>Time retry code, this is the next call attempt time. This is an unsigned
long representing the number of seconds since the epoch. Before this time
the node may not be called. This is set after a failed call, a random time
in the near future is selected.
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<li>Retries, this is the number of consequtive call attempts made that returned
"call failed" or other errors. This field is zeroed when the call succeeds and
when a new "poll" is created. If the value is 30, the node won't be called
anymore.
<li>Code, this is the return code of the last attempt.
</ol>
<p>&nbsp;<p>
<h3>Configuration.</H3>
<P>
The behaviour of mbcico can be configured with <strong>mbsetup</strong>,
section 1.17 If something doesn't do what you want, set the debug on for
that problem. This will produce huge logfiles, but also a lot of information.
Important flags are Device IO, EMSI debug, File forward, Locking, Outboundscan
and Session.
<P>&nbsp;<P>
<h3>Bugs.</H3>
<P>
Incoming calls from McMail mailers, McMail is quite hasty
to establish an EMSI session, and times out in less than a second. So
if your system is heavy loaded, or not too fast, McMail cannot connect
with your system. This is a known problem with McMail 1.0 and older,
later versions are ok.
<P>&nbsp;<P>
<H3>Authors.</H3>
<P>
<pre>
Eugene G. Crosser &lt;crosser@average.org&gt; Orginal ifcico.
Stanislav Voronyi &lt;stas@uanet.kharkov.ua&gt; TCP/IP code.
T. Tanaka Telnet mode.
Martin Junius Rewrite of opentcp().
Omen Technology Inc Zmodem protocol.
Arjen G. Lentz, Joaquim H. Homrighausen Hydra transfer protocol.
Cristof Meerwald Implementation of Hydra in ifcico.
P. Saratxaga Tty driver code, yoohoo extensions.
Dima Maloff Binkp protocol.
Michiel Broek Rewrite for MBSE BBS.
</pre>
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