Re: [twsocket] IMAP4 support
What do you mean it limits number of items via POP3? How many new mails you have? Gmail AFAIK only disables standard behavior of DELE command and instead of deleting it acts as set in settings of Gmail account (usually marks message as read). Also, once email has been accessed through POP3 it cannot be accessed anymore even though you didn't delete it. Gmail treats RETR as if you submitted RETR and DELE afterwards even if you didn't submit DELE. But it didn't limit me to access all emails so far (once). -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] Merry Christmas
Čestit Božić i Sretna Nova Godina! (from Croatia) (Merry Christmas and Happy New Year) There, more funny characters for you to test your decoders :) -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
[twsocket] 64 bit NNTP Article IDs
Here is a thing I posted on Indy forums but also concerns Overbyte package too. According to RFC-3977 article number is supposed to increase until it reaches bounds of 31-bit value - 2,147,483,647 ( http://tools.ietf.org/html/rfc3977#page-24) and while servers are not allowed to send higher value by RFC, the RFC is still open to this possibility and advises for newsreaders to have internal structures prepared to hold higher values like unsigned 64 bit or so. In fact for some high-volume newsgroups this number has been exceeded already ( http://en.wikipedia.org/wiki/Alt.binaries.boneless) and some newsreaders have issues handling this. Some of the most popular news servers like GigaNews are already sending high bound number in unsigned 64-bit format and are recommending for newsreaders to implement this as well - http://www.giganews.com/news/article/64-bit-Usenet.html - Note that this is their recommendation but this is not necessary how other servers may handle this - some may simply wrap counters to 32-bit value ignoring the high bits. When the number reaches 32-bit limit odd things may happen in newsreaders - they may stop accepting new articles. Some servers might (not sure) wrap article numbers to reset the count. But most popular ones have chosen not to do so but continue increasing the number and this is likely to happen for others as well. In any case, using 64 bit integer for Article ID's is better and safer at least until most news servers are either upgraded or RFC is updated or it is decided what format to use. OverbyteIcsNntpCli.pas uses 32-bit number and GetInteger function to convert number to integer rather than StrToInt64. Additionally it uses -1 value as well which further limits the use of 32-bit range. Extending to even 63-bit value (not even need for 64 bit unsigned) as 63 bit integer is still a very very very very large number not likely to be reached anytime soon even in alt.binaries.boneless. How complicated a change to 64 bit article ID's is? -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] Restricted ports on the Mac
Maybe a stupid question but have you tried to telnet to localhost, port 21 to see if anything else listens on it? perhaps a hanged process/thread? -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] thread safety and async operation
Basically you answered what I needed to know. As long as no ProcessMessages is called it is safe to use in non-thread safe environment with single thread. Thanks for the answer. -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] [OT] What are possible dangers using ICS-SSL without SSLversion chec
It is definitely possible to have issues with UPX but I would say that's a bit too sensitive heuristics. With better (read: paid) anti-viri programs I never had any issues - they recognize UPX and unpack it properly and check for whatever is inside. Only AVG and similar software (free versions) had this issues - not to pick on any in particular. But back on topic - we could really use updated SSL DLL's on Overbyte wiki. There has been another security fix since 0.98n version and 1.0.x version should now be relatively stable and IMHO supported too. Someone cares to update it? ;) -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] [OT] What are possible dangers using ICS-SSL without SSLversion chec
Also, is there a mechanism (in ICS) to check for invalid root certificates (regarding the recent SSL issue with bad Comodo certificates)? -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] How to set in GSSLEAY_DLL_Name under BCB2010?
GSSLEAY_DLL_Name = SSLEAY32.DLL; doesn't seem to work! well it should. could be a problem with installation? maybe you're missing some of the #pragma's in the cpp file? -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] SSL send emai using gmail?
A kind of related note - if you are downloading mail from Gmail (using POP3) Gmail does not behave as usual servers where you issue RETR command and deletes message only after you issue DELE command but instead it uses settings from Gmail account and seems to ignore DELE command completely. If you are not using POP3 but only SMTP then care about this. -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
[twsocket] Why ICS prefers non-blocking sockets?
When I looked at Indy and Ararat Synapse they both prefer blocking sockets to connect to text-based protocols like HTTP, POP, SMTP, FTP etc. The reason - because communication is flowed - you send command, you wait reply, if reply does not match you handle error. It is all nice line-by-line inline code. With ICS it uses events to reply to reply codes and non-blocking. But with this you lose - easy to follow code flow. If you really need to make it independent you simply put it in separate thread - both Indy and Synapse have their own way of solving this - Indy has special component for threading sockets and Synapse some kind of function that gets called every once in a while. It is all much better explained here why blocking is better: http://www.ararat.cz/synapse/doku.php/about So I am wondering why ICS prefers events when the code is so much simpler without them? -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] SSL send emai using gmail?
See: http://wiki.overbyte.be/wiki/index.php/ICS_Download -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] Season's greetings
Merry Christmas and Happy 2011 from Croatia to all of you guys especially Francois, Arno and Angus... and big thanks for all the help and tips provided so far! You have no idea how much it is appreciated! -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
[twsocket] MIME, TMimeDecodeW and IP*Works
I was looking a bit at how IP*Works operates that is included in Delphi/CB XE. With MIME decoder it has a nice feature of decoding parts on demand. Basically it scans MIME message for available parts and builds a list of available parts. They are not decoded at this point. When you access array elements though, they are being decoded dynamically. So for larger messages it won't allocate lots of memory before you actually need a certain large part but you can still get info about message for previewing purposes and also it won't use a lot of CPU time (like when you run base64 decoder on a large file). So I was thinking that would be nice for TMimeDecodeW as well - or maybe it already operates that way? Any thoughts on this? -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
[twsocket] Combining ICS with Indy
Someone before here mentioned compiler errors with CB and ICS. Errors like: [BCC32 Error] ws2def.h(213): E2238 Multiple declaration for 'sockaddr' [BCC32 Error] winsock.h(486): E2344 Earlier declaration of 'sockaddr' [BCC32 Error] ws2def.h(222): E2146 Need an identifier to declare [BCC32 Error] ws2def.h(391): E2184 Enum syntax error [BCC32 Error] ws2def.h(444): E2040 Declaration terminated incorrectly I had the same thing. The problem was when I tried to include in single cpp/hpp unit ICS and Indy. In particular the issue causing this was IdMessage in combination with OverbyteIcsMimeDec These two headers conflict: #include OverbyteIcsMimeDec.hpp #include IdMessage.hpp I wasn't able to place them in single unit to compile successfully. Only after putting Indy in different unit (on another form) and changing the include order of form include files it finally compiled. I'm not sure which of these headers didn't check if ws2def.h or winsock.h wasn't already included but I would suggest a check when building these headers in ICS to place a check whether a particular header is already included so it doesn't get included twice. -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] ICS V7 and TLS support
First off, does ICS V7 support the newest TLS version 1.2 ? whatever 0.9.8n supports, ICS should support. so take a look what 098n supports in openssl docs. dynamically when a ICS-SSL application starts ? on first use (first connection), not when app starts but when SSL/TLS component is used, or you can initialize / load libraries manually when you init context - which is better because you can detect if dll's are missing from the folder. arno's example code: try GSSLEAY_DLL_Name := full path and filename; GLIBEAY_DLL_Name := full path and filename; MySslContext.InitContext; except // Something went wrong with loading OSSL, handle it. end; There has been made bugfixes a.o. in the OpenSSL versions succeeding 0.9.8e and 0.9.8h. Is ICS-SSL limited to 0.9.8e/h or can newer versions be used ? ICS can use 0.9.8n which is more recent than both versions you mention. You can find it here: http://wiki.overbyte.be/wiki/index.php/ICS_Download More recent is only 0.9.8o. Occasionally, TeamICS makes new version builds and tests ICS against them. 098n is not the latest but is stable. better choice only would be 0.9.8o at the moment. versions 1.xx are not yet stable so 098x are better for production purposes but eventually they will replace 098x versions. the above dlls don't require any external dependencies so are best for use with your app probably. -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] OT: Keyloggers and the way Microsoft treats them
be thankful for it and make your own and make money on it. ms thinks on a corporate level and what their corporate heads think is good for their users. it is a whole different mindset than regular users mindset. by the time they figure it out you'll have tons of money just for that simple idea. if you really make money on it, you can thank me later :) -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] TCP LocalPort...
Do you really need to determine free local port? By what you wrote it doesn't seem you need that. You need a free local port if you are making a server type of application, not a client application. If you connect to remote server (then you are making a client application) you connect to whatever port that server has assigned but that will not generate TCP binding error on your (client) computer. Usually you connect to specific port then the communication continues after establishing connection on a random port to free the specific port on server for additional connections. If you really need free local port for server app, then assign a port, start server and if you get an exception, assign another port and so on until you exhaust all ports required for your application. If you need one specific port - then report error to the user. -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
[twsocket] RFC 2822 date format - Timezone
I think there might be a slight issue with timezone bias calculation. In this function (haven't checked but similar could be used somewhere else too): function TimeZoneBias : String; in OverbyteIcsSmtpProt.pas if timezone could not be calculated (TIME_ZONE_ID_INVALID) or if it is GMT (UTC) it returns - as result. But here is what RFC 2822 says: --- The form + SHOULD be used to indicate a time zone at Universal Time. Though - also indicates Universal Time, it is used to indicate that the time was generated on a system that may be in a local time zone other than Universal Time and therefore indicates that the date-time contains no information about the local time zone. Notice the capitalized SHOULD in RFC. So in other words - means that this timezone info is meaningless. + would mean - this date was generated on a client that is in UTC timezone e.g. London. But - could be for example used by server to add or correct invalid timezone but if the server is in different timezone than sender of the original email it might mean the above - it fixed the date but the timezone is no longer relevant to the original sender so cannot be used to determine where the original message time zone is. So if this is all correct - my suggestion for modification if this is all right would be to: - return - if TIME_ZONE_ID_INVALID - return + if timezone is UTC or GMT etc - for any use by clients - return - - for any use by servers Also a question - is there a function to return TDateTime version of RFC-formatted date in Mimeparser? I could not find it... or am I supposed to do my own parser for RFC date from headers because the result from mime parser is raw RFC formatted date? -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
[twsocket] pop3 and lastresponse
I found something that might also be issue with pop3 component. If you check one pop3 account and end the session usually LastResponse will be some ending message like +OK sayonara. But if you then reinitialize pop3 for another account and this account fails to connect, for example due to timeout you get for example -ERR Connection refused (Winsock error #10061) but LastResponse is still +OK sayonara although it should be invalidated and set to empty string. Or, there should be IMO a method ClearLastResponse as LastResponse is not a writeable property right now. Checking on both messages (LastError and LastResponse) is useful for debugging purposes so they should be a possibility to manually (by calling ClearLastResponse) or automatically invalidate LastResponse. Furthermore, although Error code is accessible in for example OnRequestDone it is not accessible within the pop3 component and the code may sometimes be 10061 which is Winsock code or 500 which is pop3 component code. Nothing that can't be done with little RegEx on LastError but why not publishing this as well? I've done quite a bit of testing for Throttle and Timeout. While Timeout works rather nice as far as Idle version goes, connect version is usually preceded by Windows built-in timeout (unless you set connect timeout to very low time like 1 second) Windows may time-out the connection much sooner than connect timeout did. Other that that it works fine. Try connecting to 127.0.0.1, unroutable address like 192.168.255.255, or 10.255.255.255, and existing but firewalled like www.google.com:81 to test this. I'm not sure if it applies only to later Windows and haven't tested with older Windows than XP. As for Throttle, it works but rather strangely. If I set limit to 1 and timer to 1000 it should pass 1 byte every 1000ms and accumulate the rest in internal buffer right? Well it doesn't work like if you do something like SendStr(Some large string here) it will send entire string and then wait for 1000 ms rather than sending just one byte every 1000 ms. At least this is how throttle should work - send a maximum of Limit bytes every Timer interval and if more is available, store in internal buffer for sending later. It may be tricky to implement as data could accumulate in memory but not sure about that one. -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] pop3 and lastresponse
IMO the component should clear LastResponse on before connect. Maybe it should, but what it does is different story :) The following fails also with non-sync version but sync is easier to copy-paste. //-- SyncPop3Cli-Host = put-valid-server-here; SyncPop3Cli-UserName = put-valid-username; SyncPop3Cli-PassWord = put-valid-password; SyncPop3Cli-ConnectSync(); SyncPop3Cli-UserSync(); SyncPop3Cli-PassSync(); SyncPop3Cli-StatSync(); SyncPop3Cli-QuitSync(); // Here you should have +OK goodbye or whatever in LastResponse MessageBox(NULL,(LastResponse:+SyncPop3Cli-LastResponse+\r\nLastError:+ SyncPop3Cli-ErrorMessage).c_str(), Info, MB_OK); SyncPop3Cli-ClearErrorMessage(); //SyncPop3Cli-LastResponse = ; // What should be done SyncPop3Cli-Host = www.google.com; // Simulate bad server SyncPop3Cli-Port = 81; // Behind firewall SyncPop3Cli-UserName = a; SyncPop3Cli-PassWord = b; SyncPop3Cli-ConnectSync(); // +OK goodbye from last connection is still here MessageBox(NULL,(LastResponse:+SyncPop3Cli-LastResponse+\r\nLastError:+ SyncPop3Cli-ErrorMessage).c_str(), Info, MB_OK); //-- So what about a numeric property LastErrorNumber? There is no such property nowhere in pop3 (or in any ICS file). something, worth to be tested anyway: [...] I'll take a look and test this code soon enough. Thanks. -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] HTTPcli: source path question
Well, then I have a question: maybe you have some ideas of how to organize recursive download: for example, if user started to download www.example.com/path/index.html, we should also accept www.example.com/path/logo.jpg and so on, but not www.example.com/index.php. If user started www.example.com/path/foo, we should accept www.example.com/path/foo/index.php but NOT www.example.com/path/bar.jpg. Applications like Wget do support this behavior but the question is how they do it. HTTP reply consists of header and document. In header you can find useful info about the type of the document being served. Wget uses this info to determine filename and hint the directory structure. It parses HTML but not in a way that it creates a folder structure. Rather it creates a browsable structure that you can open in your web browser. Basically for each document you receive you have to scan for a href=link links (and possibly also CSS-based links) and internally in your program organize them into folder structure. You also need to look at base link in html header if it exists. To create browsable structure sometimes also a href links in downloaded documents need to be modified as well, to point to different location. -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] HTTPcli: source path question
Then I noticed that requests to folder without trailing slash (GET /somepath/foo/bar) are redirected to locations with slash (/somepath/foo/bar/) so it's easy to tell it's a directory. this depends how server is configured to treat trailing slash. In most cases it will treat it as access to folder and look for default files there (index.htm, index.html, index.php, default.asp, default.aspx etc.). But this can be easily changed by simply changing .htaccess files on Apache for example so even if web server is configured one way, navigating to a certain folder with different .htaccess directives can change this behaviour completely. You will see that for example WordPress has an option how it will display URL path - as folders as html file but in reality this is just a choice of format which will be parsed later by index.php or whatever. This is just a modification of .htaccess So you cannot really know how folders are structured on the server is just by looking at the URL. Furthermore a lot of servers are configured as virtual hosting meaning a single host hosts hundreds or even thousands of sites that share the same IP address (just have their own user account directory configured on the server). -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] New DLL hijacking vulnerability KB 2269637
const GSSLEAY_DLL_Name : String = 'SSLEAY32.DLL'; This is not required since writable typed constants is enabled. That's all fine but I don't see it published as property anywhere. How do I modify its value during runtime to set full path for SSLEAY32.DLL and LIBEAY32.DLL? -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] New DLL hijacking vulnerability KB 2269637
Forget about my remark about \ or /. The DllPath could be used as is just DllPath + LibraryName. This avoids the need to process needlessly slashes or backslashes. If this is used I would suggest a bold remark in the docs on Wiki to encourage use of this property if this is to be used. Anyway, other ideas are still welcome. -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
[twsocket] New DLL hijacking vulnerability KB 2269637
It appears that this new vulnerability requires programs to adopt secure DLL loading. As Microsoft says they can't fix the issue by patching Windows as it would mess up a lot of programs so it is up to programmers to fix it in their own programs. This applies to all programs that load external libraries (DLL files) one way or another - so it applies to ICS as well as it loads SSLEAY32.DLL and other DLL's The solution is to load DLL files in a secure manner as described here: Dynamic-Link Library Security - how to load libraries securely: http://msdn.microsoft.com/en-us/library/ff919712%28VS.85%29.aspx More info about this vulnerability: Microsoft Security Advisory (2269637): http://www.microsoft.com/technet/security/advisory/2269637.mspx http://www.f-secure.com/weblog/archives/2018.html Google search on this issue: http://www.google.com/search?q=KB+2269637 -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] OpenSSL 1.0
Open SSL is currently branched into two releases - 0.9.8o and 1.0.0a. Although 1.0.x is more recent, 0.9.x versions are currently more stable so I would go with 0.9.x -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] ICS Message handlers
Can I send attachment to this group? If not, how do I send? Eric Please don't send attachments even if it is possible. Upload to hotfile.com or some similar service (there is a bunch of them!) like that and link in your message... all of such services offer you a delete link which you can use later to delete your files if you don't want them present at later time. -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
[twsocket] WM_USER vs. WM_APP messages
From what I could see, ICS uses a lot of WM_USER+n messages range but the use of these custom messages is not recommended. Instead you should use WM_APP+n. http://msdn.microsoft.com/en-us/library/ms644930%28VS.85%29.aspx The reason to use WM_APP is because WM_USER can conflict with system messages - this is especially true on older Windows so WM_APP range should be safer. Any thoughts on that? -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
[twsocket] Detecting POP3 protocol state and disconnecting
A few POP3 related questions... 1. How am I supposed to detect when POP3 component has disconnected or what state is it in? OnSessionClosed appears to trigger BEFORE it disconnects but after QUIT is sent (not logical for me, should be the last one to trigger) and what seems to trigger at the disconnection time is OnRequestDone when TPop3Request is pop3Quit which appears to be the last one to happen. But if I immediately during this event start new batch of POP3 commands (by setting new server, new port etc.) it may sometimes trigger pop3 already connected and sometimes won't. So obviously it is still connected. Also, is it good to fill pop3 component with new server name while in event handler or how to implement a small time-delay (to fill it right after the event is handled)? Next I tried OnStateChange event. It is supposed to update SyncPop3Cli1-State or perhaps ProtocolState right? Well... it does trigger but SyncPop3Cli1-State always returns pop3Ready (defined as 0). Same goes for SyncPop3Cli1-ProtocolState - whenever I read it it always says pop3Disconnected. So why these are not updated or how to read them? Finally, I tried SyncPop3Cli1-Connected - which always returns true. I could start 2-3 pop3 components for 2-3 servers rather than waiting for first one to finish, but that is rather dumb idea if protocol state can be detected. 2. What good is TimeOut property for? It is obviously not for timeout like for example waiting for server response because you have to use TTimer for that. I also tried to see if it will be used for DNS lookup or something like that but it doesn't seem to have any effect... -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] SSH support
Fredrik Larsson wrote: Can't you use something like Putty to tunnel the traffic? I may also suggest http://www.stunnel.org/ for wrapping any kind of non-SSL traffic into SSL. -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] A better Unicode port of the POP3 client
Hi, I uploaded a better Unicode port of TPop3Cli here: http://www.duodata.de/misc/delphi/ics/OverbyteIcsPop3Prot.zip Thanks for making a quick fix, I will surely use it and probably a few other people here as well. But I'm more for a permanent solution so I'll keep an eye on this. I've been researching a bit and seems that using AnsiChar and AnsiString types to store binary data are safe they only have codepage associated with them so only conversions may be issue but apart from that they should behave binary safe as before in earlier versions of Delphi/C++. As long as you assign one AnsiString with the same codepage (like system default one, even if it is Japanese locale) there should be no conversions. I'm not sure though what would happen if two AnsiStrings were in different codepages, then probably some conversions may occur but haven't tried that. But of course TBytes is better for this purpose although it doesn't have so many useful methods in it for manipulating the data like AnsiString has... -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] pop3, buffer and character encoding
TBytes was the datatype to be used. However that would break backwards compatibility since historically string was used everywhere. That all was no problem, however the rule is: DO NOT BREAK BACKWARDS COMPATIBILITY and that is where the problems begin. Well you've already broken this rule by using UnicodeString as return type so I don't see a big deal here. Also ICS 7 is used by users that need to recompile their code in D2009/2010 so they do have to adapt their code anyway as it won't work properly with D2009 not just with ICS. For compatibility purposes you have ICS 6 and 5. And it's not a big problem - I have 2 ideas then to satisfy everybody and improve codepages compatibility: Idea 1: Why not introduce TPop3Cli.LastResponseTb which would be identical to LastResponse except different type (TBytes)? Idea 2 (probably better one): Why not introduce TPop3Cli.ResponseType enum which you could choose if you want TBytes or String and the default if you don't use it would be String for backward compatibility? Both changes should be relatively easy to implement like a few lines of code... and you could apply them for other components as well that may have issues with Unicode. -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] A bug with Pop3 - followup
So if you changed some of the wiki pages now you can surround it with these tags and make your code look nicer. Looks nice with C++, however the Delphi colors should be changed. I didn't want to go into styling because it is a matter of preference. The colors as they are now are defaults of GeSHi and are very similar to the ones used for example on Wikipedia - see: http://en.wikipedia.org/wiki/Delphi_programming_language and http://en.wikipedia.org/wiki/C%2B%2B But styling is easy - providing you have access to the server. I have MediaWiki installed locally so I can edit help locally and upload when finished and it is only a matter of modifying GeSHi language .php files for example in: extensions\SyntaxHighlight_GeSHi\geshi\geshi\delphi.php You will find: 'STYLES' = array( 'KEYWORDS' = array( 1 = 'color: #00; font-weight: bold;', 2 = 'color: #00; font-weight: bold;', 3 = 'color: #66;', 4 = 'color: #66; font-weight: bold;' ), 'COMMENTS' = array( 1 = 'color: #808080; font-style: italic;', 2 = 'color: #008000; font-style: italic;', 'MULTI' = 'color: #808080; font-style: italic;' ), etc... These are colors of delphi output... so... style to... whatever you want them to be. Don't introduce CSS errors though. C++ colors are in: cpp.php also under 'STYLES' array So change it to whatever you like or think they may be. I'm at home with PHP and CSS but I'm not going into that issue, I just suggested to Francois - Delphi and C++ builder default interface colors to look familliar, but he has no time to change these so if you modify the files send it to him. I can do the styling that's a piece of cake, but it has to be a popular vote :) Simply send me 24-bit PNG screenshots of code and I can work with that (they have to be PNG to avoid JPG messing with colors as it is lossy and PNG is not). Whatever you decide - make sure after styling it to save the changed files because if GeSHi is updated you may overwrite the styling files so to avoid that.. backup these. -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
[twsocket] pop3, buffer and character encoding
OK, I have an issue which I don't entirely understand. The way to check received pop3 message is to create Pop3CliMessageLine event and then add Pop3Cli.LastResponse to your own buffer (UnicodeString) and store that as email. However, this creates a bit of a problem - LastResponse is UnicodeString. Normally, that's fine but the sender may send message in some single-byte encoding. So in order to handle this properly - I'd have to store message as bytes (raw buffer received from server) and later when reading it read the encoding from message header and convert bytes to UnicodeString using the encoding of the message. But LastResponse is already encoded in Unicode so I don't get raw bytes output but some converted output using some built in logic which I don't get it. if I send for example 0x80, 0x81, 0x82 I may not get the identical result in LastResponse. In fact all the characters above 0x7f may be messed up. It's ok for ASCII messages but not for others. So how is this exactly handled and is there a way to receive raw bytes from socket to convert them to proper encoding later after storing them? -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] A bug with Pop3 - followup
Thanks for your wiki-input! Arno Garrels Thank you for your answers that helped me. By the way, I suggested to Francois to install Geshi for code-coloring, if you refresh the page on: http://wiki.overbyte.be/wiki/index.php/TPop3Cli.List You'll see how it looks much nicer now. The only important things I suggested already to him is to modify default tab-width to 4 spaces instead of 8 and to surround code in light-gray dashed border like on many other wiki-s so that copy-pasting code is easier... Now the code coloring is a matter of simply pasting it to the wiki and surrounding it with the tags: syntaxhighlight lang=delphi /syntaxhighlight for delphi... or... syntaxhighlight lang=cpp /syntaxhighlight for c++ builder. So if you changed some of the wiki pages now you can surround it with these tags and make your code look nicer. Geshi can also add line numbers and a few more things documented here: http://www.mediawiki.org/wiki/Extension:SyntaxHighlight_GeSHi Anyway... more pop3 pages updates will follow... this is just the first one I did. Also... if someone is into Delphi and has wiki access, I would suggest to translate my example code to Delphi. I'm not so much into Delphi so I could make a messy code when translating it but I'll try to keep examples very simple and not use c++-ish stuff like ?: and similar so it should be fairly easy to understand even if not translated to Delphi. -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] A bug with Pop3 - followup
You have to reset property MsgNum to zero before both List() and Uidl(). Alright, that seems to work, although it is not entirely logical to me. I'll put it in the wiki documentation when updating it along with one complete example. Thanks Arno. -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
[twsocket] A bug with Pop3 - followup
I tried synchronous calls now and discovered that event trigger is not necessary related to UIDL after LIST: SyncPop3Cli1-Host = pop3.host.name; SyncPop3Cli1-Port = 110; SyncPop3Cli1-UserName = username; SyncPop3Cli1-PassWord = password; SyncPop3Cli1-ConnectSync(); SyncPop3Cli1-UserSync(); SyncPop3Cli1-PassSync(); SyncPop3Cli1-StatSync(); Memo1-Lines-Add(Messages: +IntToStr(SyncPop3Cli1-MsgCount)); SyncPop3Cli1-ListSync(); SyncPop3Cli1-QuitSync(); I put this on some button. The first time I call it List works (or if the program is restarted). The second time I call it, all works except that List does not trigger events again. Same goes if I replace it with UidlSync, again works the first time, no event trigger the second time. Now, unless I didn't do some necessary cleanup between two calls, this should work when called twice in a row without restarting a program (which only destroys and creates Pop3 component). So my guess is that there is an issue related with UIDL, LIST and repeated calls one after another... I also tried to set or clear event handlers: SyncPop3Cli1-OnListLine = NULL; SyncPop3Cli1-OnUidlLine = NULL; SyncPop3Cli1-OnListLine = SyncPop3Cli1ListLine; SyncPop3Cli1-OnUidlLine = SyncPop3Cli1UidlLine; In various combinations, to see if setting or releasing event handler would do any change - no change. -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] Should ICS support IPv6 on W2K?
Arno, don't bother with Win2000 without service packs support. See this: OS usage by market share: Windows XP - 62.53% Windows Vista - 15.26% Windows 7 - 12.67% Mac OS X 10.6 - 2.34% Mac OS X 10.5 - 1.96% Linux - 1.13% Java ME - 0.73% Mac OS X 10.4 - 0.66% iPhone - 0.60% Windows 2000 - 0.50% It is slowly moving into Win 9x domain so you can safely move on. Good XP and Win 7 support is much more important than figuring out Win2k support. Whoever uses it in the application can put this requirement in the readme and by the time it is fully tested and IPV4 no longer used, Win2k will have even less market share if any. -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
[twsocket] Issue with compiling on CB2010
When compiling current V7 on CB2010 (possibly D2010 as well) - when doing Install on the design-time package it pops: Unable to find static library: OverbyteIcsCB2009Run.lib On a related note - when doing install should I change active configuration to Release for both Run-time and Design-time packages or should I leave it on Debug before clicking Make (on run-time package) and Install (on design-time package)? I tried with both and they both pop the above message. Also, if anyone knows the difference between TMimeDecode, TMimeDecodeEx and TMimeDecodeW and which one should be used under which occasion? -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] BTW: Support for OpenSSL 0.9.8n is available (ICS v7)
Most likely that's wrong, as I recall the vulnerability, it's probably only safe to not enable option SslOpt_ALLOW_UNSAFE_LEGACY_RENEGOTIATION. I never even meant to enable this option. If it fails I don't care. Many servers will be upgraded quickly to fix this issue anyway so I don't think enabling this option will make a huge difference anyway. By the way, can anyone approve me so I can write documentation on wiki? I'm really tired of looking for documentation on like... 20 different places and many things are undocumented. Even a lousy documentation is better than nothing. As I use components I will update wiki (and not for altruistic reasons - for myself so I have it in one place :) and provide examples in c++ (someone may later rewrite them in delphi, I don't care about it). I have a suggestion - why are you so strict about approval of people that write content? Subscribing to the wiki should be enough, not just another approval. We have too much of usernames for other web places anyway! Have in mind that these strict rules and using mailing list instead of forums discourages a lot of people from using ICS - wikipedia is open for anyone to edit and if works just fine and if you're afraid of spam - well, that's unavoidable, live with it, but that's why you can lock out registered user to wiki and return content to previous wiki version if spam appears. But I don't think there will be a lot of spam anyway, wiki needs signed up user anyway that is more than enough and the majority of users are programmers not spammers, they are not likely to be interested in this. I am willing to write content but discouraged by these strict rules myself so I speak from my personal perspective. With current policies, the documentation will never be updated and it is one of the most boring jobs in the world so nobody will be motivated unless a few people from here and there do it. -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] A problem/bug with current daily snapshot of ICS
You are welcome! It's fixed and checked in. Should be included in the next daily snapshot as well. However declaration of size_t moved to OverbyteIcsTypes.pas and there are some other changes too. Please give it a trial and let me know how it works for you. Arno, didn't had time to test that build but I tried that latest version from 2010-05-08 and it appears to work and compiles just fine. Also works fine with 0.9.8n libs which is great! So no problems so far, if I find some will let you know. Good work, thanks. -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] BTW: Support for OpenSSL 0.9.8n is available (ICS v7)
well, that's great news i thought it was not fixed already and it was still disabled in N version as well. good to know! but what does this mean require the extension as needed? if i understood correctly - if you have 098n and server supports the extension, it will be used with no additional programming on the client side? if your software or server don't support extension it will fail just like L version (unless of course you allow unsafe renegotiation option)? -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
Re: [twsocket] A problem/bug with current daily snapshot of ICS
please try to add the line below to OverbyteIcsLIBEAY.pas and report back,
thank you!
type
{$EXTERNALSYM size_t} == this line
size_t = LongWord; // x86
Arno,
This appears to solve the issue. The project I have now compiles without
errors with this version as well.
/me is happy :)
Thank you!
One additional question - from what I could see ICS does not yet support
OpenSSL 0.9.8N which is currently recommended (stable) version.
The latest one I got working is 0.9.8L.
There are already precompiled Windows DLLs on
http://www.slproweb.com/products/Win32OpenSSL.html from a few days ago but
today I also see they made 1.0.0.0 builds as well.
I wouldn't go personally on 1.0.0.0 until it becomes stable but any plans to
support 0.9.8n as well?
By the way, why not including these builds from the site above on the
overbyte wiki? They are better built IMHO (if you look at properties - the
DLLs have web links, version numbers, copyrights etc, while the builds from
wiki have none of these - and you cannot easily check which version you are
using in your program). I would update wiki myself but the access is
restricted for updating it.
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[twsocket] A problem/bug with current daily snapshot of ICS
I have 2 snapshots. The one I downloaded on 2009-11-18, and the one I downloaded on 2010-05-03 (so it is snapshot from 2010-04-28 in fact which is the last date I see in the history). When I compile a project I have, it stops with the following error message: [BCC32 Error] utilcls.h(511): E2015 Ambiguity between 'size_t' and 'Overbyteicslibeay::size_t' This is what happens with latest snapshot. With older snapshot the project compiles just fine. So, any ideas what's going on here? All the rest of the settings except the ICS installation are identical so it is an issue related with ICS. The above applies for C++ Builder 2009 and ICS 7. -- To unsubscribe or change your settings for TWSocket mailing list please goto http://lists.elists.org/cgi-bin/mailman/listinfo/twsocket Visit our website at http://www.overbyte.be
