March 2007 - Oberon - mailman3.inf.ethz.ch

Darwin Oberon 2.4.3
by Roger Vossler 07 Apr '07

07 Apr '07

Hi, Does anyone know if Darwin Oberon has been ported to Mac OSX 10.4.x on Intel Macintosh hardware? If not, does anyone know if a version of Darwin Oberon that worked on a Macintosh G4 or G5 processor will work with Rosetta on an Intel Macintosh? Thanks for any information, Roger.....

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SSL tunnel; was SMTP/SSH tunnel
by Easthope 31 Mar '07

31 Mar '07

Bill & others, Sorry for all the questions and banter. I want to solidify a few more ideas before blundering further. "http://en.wikipedia.org/wiki/Secure_Sockets_Layer" distinguishes two cases. 1. TLS-capable application. "... IETF recommended that application protocols always start unsecured and ... offer a way to upgrade to TLS ..." 2. TLS-ignorant application communicating through a TLS tunnel. As I understand, Oberon MUA falls into case 2. At Mon, 26 Mar 2007 04:54:06 +0800 Bill Hacker wrote, wh> By either: wh> - Using the expected TLS ... wh> ... wh> *OR* ... await ONLY an arriving SSL session. Both subcases of case 1 above? Oberon initiates the tunnel; it can not wait for a SSL session. I need to aim for case 2. wh> 22 is indeed the SSH port, but that is for terminal session. SSH.StartForwarding is in SSH which depends on SSHTransport which defines SSHport = 22. I found no other port in the modules. wh> a) Specify which IP to listen on: Doesn't the SSL daemon, rather than the MTA, listen on the interface? wh> b) ... ports ... wh> b) ... certificate ... wh> c) ... 'Offer' TLS to all, or ... wh> d) ... keep state ... All issues for the SSL daemon running the tunnel; not for the MTA? wh> e) ... accept AUTH ... One of the more obscure aspects. wh> See also POP and IMAP use of SSL. In Oberon, POP and IMAP are ignorant of SSL. If anyone knows of a link to a SSL tunnel Howto it would help. Thanks, ... Peter E.

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Re^3: RX.Tool scope limited to 1 line ?
by Easthope 30 Mar '07

30 Mar '07

Chris, cg> You mean recompile TextFrames.Mod with OpenCmd="Desktops.OpenDoc" ? Yes. There is a note about that in my Oberon Web page since a year or two ago. cg> ... many disadvantages: Nothing is perfect. There are two practical choices. OpenCmd="ET.Open" OpenCmd="Desktops.OpenDoc" Of course, if you can make an improvement or extension to either of these, why not? cg> Well I don't want to study regular expressions. The "... cat ... dog ..." problem you described is a regular expression problem. If you work on that problem you are working with at least one regular expression. Regards, ... Peter

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Re: ^2: RX.Tool scope limited to 1 line ?
by Chris Glur 30 Mar '07

30 Mar '07

> cg> * searched file must be 'gadget' type=2E ie=2E not Edit=2EOpen > > Peter Easthope wrote: > A simple solution is to set OpenCmd =3D "Desktops=2EOpenDoc";=20 > in TextFrames=2EMod and recompile it=2E You might find the=20 > Desktops viewer advantageous in other facets as well=2E > You mean recompile TextFrames.Mod with OpenCmd="Desktops.OpenDoc" ? Does that cause Desktops.OpenDoc to be the default editor at boot-up ? Linux-ETH-Oberon also has NOT Edit.Open as default. Which also has many disadvantages: * can't do TextMail.Cite * * has problems with News.Send * and/or TextMail.Send * * and unwanted auto-indent is most annoying. I find it best just to accept that text needs to be moved between the different 'editors' and formats. > cg> =2E=2E=2E finds the biggest text-stretch =2E=2E=2E want the=20 > first/smallest =2E=2E=2E > > Question for the regular expression experts=2E There=20 > must be a simple answer=2E Well I don't want to study regular expressions. BTW an example of the common need for a quick, multi-find/replace is to 'fix' your mime-posts by ET.Do DeMime , where file: DeMime is a script to find/replace-translate: '=20' -> '' '=3D' -> '=' .etc. Thanks, == Chris Glur.

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tst bad Cc: url
by Chris Glur 28 Mar '07

28 Mar '07

========= sample header for EASMailTxAuth.Send * ======= !! fails to send from Desktops.OpenDoc type text ?? To: oberon(a)lists.inf.ethz.ch Cc: crglur@absamail.co.za,crglur@gmail.com Subject: M$-Win's crashing & N-O's unsave inet-fetches & Linux/N-O/wiki

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Re: [Oberon] Re: ^2: RX.Tool scope limited to 1 line ?
by Easthope 27 Mar '07

27 Mar '07

Chris, cg> * searched file must be 'gadget' type. ie. not Edit.Open A simple solution is to set OpenCmd = "Desktops.OpenDoc"; in TextFrames.Mod and recompile it. You might find the Desktops viewer advantageous in other facets as well. cg> ... finds the biggest text-stretch ... want the first/smallest ... Question for the regular expression experts. There must be a simple answer. Regards, ... Peter E.

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Re: ^2: RX.Tool scope limited to 1 line ?
by Chris Glur 27 Mar '07

27 Mar '07

Can it replace the multiple lines, starting with the one containing 'cat' up to the one containing 'dog' ? Easthope a écrit : > <anyString> <space> "cat" <anyString> > <anyString for line 2> > <anyString for line 3> > <anyString> <space> "dog" > > ? > > Yes, I expect that Regul can do it ... but I've never > tried a similar problem. _____________________________________ Gérard wrote: > My last little improvements were made under BlackBox > (see Helmut Zinn's site). > That's why it's not well 'formatted' for N-O ? > But the latter example works easily under Oberon: in Regul.Panel, > write > > $ .* cat (.|$)* dog .* > > in the Find: field; write nothing in the Repl.: field; mark (F1) the > text that must be changed; press Find Next and, then, Replace. It's all. > > Hint: $ stands for EOL, a dot (.) stands for any character, but not EOL, > the star (*) marks the repetition of the previous word, a vertical bar > (|) stands for a logical OR and braces group expressions together. Press > the Help button and follow the links in the title for further explanations. > > Hint 2: If the first line to be deleted is the first line in the text, > without any EOL before, don't write the first $ in the Find: field. -________________________________________________________________________________ $ .* cat (.|$)* dog .* == <EOL> <-- starts @ EOL/line-boundry [any character, but not EOL]repeated {0?1 times} 'cat' [any character]repeated 'dog' [any character, but not EOL]repeated <-- terminates @ EOL-boundry --________________________________________________________________________________ Using my log from 10 June 2004, when I first D/Led the package for testing, and had a near nervous breakdown when finding that : } This package requires the TBox and Babel subsystems I now find: * searched file must be 'gadget' type. ie. not Edit.Open * [Replace] gives: TRAP 100 HALT statement TBoxMapping.Init PC = 888 if the [Find Next} text-stretch is not fully seen as selected. Ie. when the text-stretch size doesn't cause the display to scroll to show the end of the selection, then [Replace] is ok. Since I've got many 4-line-long-stretches to delete, it can do it. * the suggested [Find Next] field for my immediate/example[s] is not correct, because it finds the biggest text-stretch bracketed by 'cat' & 'dog'. Whereas I eg. want to process multiple text-stretches bracketed by 'cat & 'dog'. Analagously if you want to delete all text-stretches between "(" and ")" you don't want to delete all of the single text-stretch between the first "(" and the last ")". I guess what I need [for this example] is easier that what you've given me, but I don't want any more school boy exercise new syntaxes to learn, so some examples are welcome. Ie. I seem to remember reading how Perl is [also] too clever: finding the biggest matching pattern. I just want the first/smallest [but repeating] match [for my immediate example]. Thanks, == Chris Glur. PS. how would I remove the first 3 spaces [" "] of each line of a text ?

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Re^3: [Oberon] SMTP/SSH tunnel
by peasthope＠cablelan.net 25 Mar '07

25 Mar '07

Bill, wh> ... hostnames and IP's not just 'H' and 'W' and 'P'. Sorry. Here is more info. P = cablelan.net = ISP machine or cluster. I do not know the OS for certain. The Web server appears to be MS, so my first guess is that the mail server is MS also. H = joule.cablelan.net, dynamic IP address on eth0, 192.168.1.1 on eth1 = my home Debian server with exim4 and ipmasq. W1 = heaviside.cablelan.net, local address 192.168.1.3 on my home LAN = home workstation = ETH Oberon / PC Native 05.01.2003. W2 = cantor.pathology.ubc.ca, local address 192.168.1.7 on my work LAN = "work" workstation = ETH Oberon / PC Native 05.01.2003. wh> ... amazed thay accept your relay on port 25. At a conceptual level: I am a customer of cablelan and joule is directly connected to their MAN. Why not accept all my messages from joule including messages originating from a machine connected to joule? At a presentation/session/transport(?) level: joule runs ipmasq. For all I know, ipmasq is involved for the relay to work. wh> 'H' can have more than one set of interface ports and protocols, ... Yes, H has eth0, connected to P, and eth1, connected to my LAN. wh> ... odder still that it fails when you are accessing a box back of the relay host from different places ... Probably simply that exim4 and the tunnel are not connected properly. wh> Oberon will need fixed port numbers at both ends, and Exim can 'meet' it there, ... After reading all the documentation which has turned up in the last three weeks, two questions still baffle me. - Encryption and port forwarding are entirely distinct concepts. Why are they implemented together in SSH? Is it just that both are used in a tunnel? (No offense to Guenter.) - Suppose the Oberon MUA issues a message with port = 25 and tunneling is working. Each SMTP packet is wrapped inside a SSH packet (marked port 22 according to the list I've seen). At the outlet end of the tunnel, the SSH wrapper is removed. So the unwrapped SMTP packet should be just as when it left the MUA. So how is exim aware of the tunnel and why is the packet treated differently from a packet from a MUA connected without a tunnel? I am unlikely to progress far with the tech -nicalities before understanding the elementary concepts. Probably at least a few others are benefiting from this discussion. Thanks, ... Peter E. Desktops.OpenDoc http://carnot.pathology.ubc.ca/

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Re (2): [Oberon] SMTP/SSH tunnel
by peasthope＠cablelan.net 25 Mar '07

25 Mar '07

Bill, Thanks for the explanation. I'll try to fill in some details. wh> ... need to control the MTA AND it be one that can do as it is told. H can! There are three machines, W, H and P. W is my Oberon workstation. H is my Debian Linux system at home. It has exim4, a connection to my home LAN and a continuous cable connection to P. P belongs to the ISP and is beyond my control. When W is on the LAN with H, H relays messages to P with no problems. Apparently W, H and P all use port 25. SSH is not involved. When W is away from the home LAN but can connect to H through the Internet, messages should go from W to H through a SSH tunnel. H should continue to relay messages to P as mentioned above. The tunnel should be invoked by W. wh> Best to use 587. So /etc/exim4/exim4.conf.template should contain this line? tls_on_connect_ports = 587 H should continue to allow a local connection on port 25 ... and this might open the tunnel from W to H? SSH.StartForwarding peter(a)peasthope.yi.org 25:localhost:587 ~ This will be the data flow? [W:Oberon MUA:25] ==(SMTP in SSH tunnel)==> [587:H:exim:25] ==(SMTP in cable)==> [25:P] Thanks again for all the information, ... Peter E. Desktops.OpenDoc http://carnot.pathology.ubc.ca/

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The JPC Project
by Douglas G. Danforth 25 Mar '07

25 Mar '07

http://www.physics.ox.ac.uk/jpc/index.html JPC is a pure Java <http://java.sun.com/> emulation <http://www.physics.ox.ac.uk/jpc/Emulation.html> of an x86 PC with fully virtual peripherals. It runs anywhere you have a JVM, whether x86, RISC, mobile phone, set-top box, possibly even your refrigerator! All this, with the bulletproof security and stability of Java technology. JPC has been developed since August 2005 in Oxford University's <http://www.ox.ac.uk/> Subdepartment of Particle Physics.

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