April 2010 - jboss-dev-forums - Jboss List Archives

Re: [jboss-dev-forums] [JBoss ESB Development] - Problem in retrieving WSDL from remote endpoint

by David Ward

David Ward [http://community.jboss.org/people/dward] replied to the discussion "Problem in retrieving WSDL from remote endpoint" To view the discussion, visit: http://community.jboss.org/message/540047#540047 -------------------------------------------------------------- Well, if you look at everywhere that calls that method, our code consistently hardcodes "UTF-8". So maybe we should question why are we passing in a charset anyway? Regarding determining the charset, I have done a lot of reading on this, and you can't always depend on magic bytes to tell you the encoding, so some amount of the bytes have to be reviewed and matched with conversion tables to find a match. On ICU4J's homepage, "+ICU's conversion tables are based on *charset data collected by IBM over the course of many decades*, and is the most complete available anywhere.+" I would be likely to believe this, as I had read elsewhere that many of the I18N code in JDK >=1.1 came from them and was actually fed directly into the Java language via partnership. "IBM and the ICU team played a key role in providing globalization technology into Sun's Java". -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/540047#540047] Start a new discussion in JBoss ESB Development at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&cont...]

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Re: [jboss-dev-forums] [JBoss ESB Development] - Problem in retrieving WSDL from remote endpoint

by Kevin Conner

Kevin Conner [http://community.jboss.org/people/Kevin.Conner%40jboss.com] replied to the discussion "Problem in retrieving WSDL from remote endpoint" To view the discussion, visit: http://community.jboss.org/message/540045#540045 -------------------------------------------------------------- It looks like the invocation of that method seems to be more of an issue, both locations hard code it to be "UTF-8". Kev -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/540045#540045] Start a new discussion in JBoss ESB Development at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&cont...]

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Re: [jboss-dev-forums] [JBoss ESB Development] - Problem in retrieving WSDL from remote endpoint

by Kevin Conner

Kevin Conner [http://community.jboss.org/people/Kevin.Conner%40jboss.com] replied to the discussion "Problem in retrieving WSDL from remote endpoint" To view the discussion, visit: http://community.jboss.org/message/540040#540040 -------------------------------------------------------------- That method creates a String with the encoding that it has been told is present. The fact that we are giving it the *wrong* encoding, for whatever reason, does not make that implementation incorrect. I would be interested to find out more about how ICU4J determines the character set, especially if we can see that it is guaranteed to get it right every time. Kev -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/540040#540040] Start a new discussion in JBoss ESB Development at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&cont...]

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Re: [jboss-dev-forums] [JBoss ESB Development] - Problem in retrieving WSDL from remote endpoint

by Kevin Conner

Kevin Conner [http://community.jboss.org/people/Kevin.Conner%40jboss.com] replied to the discussion "Problem in retrieving WSDL from remote endpoint" To view the discussion, visit: http://community.jboss.org/message/540039#540039 -------------------------------------------------------------- As Magesh points out, the readStreamString method is implemented correctly. It is not intended to transform a stream into a named character set but to read in a stream already in that character set. How we determine that character set seems to be the issue. I don't know enough about internationalised character sets to know whether 'guessing' is guaranteed to work. My guess would be that it isn't and that any utility is a 'best attempt' rather than a guarantee, but we should definitely check that out. If we cannot rely on a Content-Type header or equivalent, either because the value is incorrect or cannot be determined from the XML, then I think it would be safer for us to provide a fallback mechanism and allow the type to be specified/overridden (as Magesh sugegsted) rather than trying to guess it. Kev -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/540039#540039] Start a new discussion in JBoss ESB Development at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&cont...]

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Re: [jboss-dev-forums] [JBoss ESB Development] - Problem in retrieving WSDL from remote endpoint

by David Ward

David Ward [http://community.jboss.org/people/dward] replied to the discussion "Problem in retrieving WSDL from remote endpoint" To view the discussion, visit: http://community.jboss.org/message/540036#540036 -------------------------------------------------------------- Magesh, I disagree that you believe StreamUtils.readStreamString(stream, charset):String is correctly implemented. It creates a String with the passed bytes and passed encoding, however the passed bytes contain character data which might not be in the passed encoding! Using ICU4J can fix this. Specifically, change this: public static String readStreamString(InputStream stream, String charset) throws UnsupportedEncodingException { return new String(StreamUtils.readStream(stream), charset); } to this: public static String readStreamString(InputStream stream, String charset) { return new CharsetDetector().getString(StreamUtils.readStream(stream), charset); } Regarding the statement: "The user application may be expecting only the specified encoding, whereas due to intelligent scanning we might read all encoded streams", I do worry about this a bit from a performance perspective (although it has not been substantiated yet), however I do not worry about it as a security issue. Either way we're building up a String. I should also note that I didn't change any methods that just read an InputStream into a byte[] array. I only changed the methods readStreamString and getResourceAsString - the two utility methods that want those bytes +as a *String*+, and not just as a data-bucket. I would be okay with just sticking to fixing the WSDL encoding problem, which would mean removing my change to StreamUtils and convert the characters "closer" to the WSDL handling code, however: 1. I wouldn't add a property called "wsdl-encoding" to any Action. Again, we would be depending on the user to specificy it correctly, which we've already seen here they don't do. 2. What do we do about all the other areas of our code that need to do String handling/outputting that are assuming the bytes contain characters encoded as UTF-8, but they're not??? I think the thing that intrigues me the most about your reply is that non-UTF-8 WSDL should not be allowed according to Basic Profile. This could change everything. I have to admit I was ignorant of this. Now, should we: 1. Say "all WSDL must adhere to Basic Profile so we are rejecting this jira." - Seems a bit harsh, but might be acceptable. 2. Understand that many people (myself included up until now) don't know about this, or +don't *want* to adhere to it+, so we should just handle the possibility of non-UTF-8 or UTF-16 encoded documents just in case? Thanks for the feedback, David -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/540036#540036] Start a new discussion in JBoss ESB Development at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&cont...]

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Re: [jboss-dev-forums] [JBoss ESB Development] - Problem in retrieving WSDL from remote endpoint

by David Ward

David Ward [http://community.jboss.org/people/dward] replied to the discussion "Problem in retrieving WSDL from remote endpoint" To view the discussion, visit: http://community.jboss.org/message/540034#540034 -------------------------------------------------------------- Keith, Yes, the original example WSDL declares UTF-8, incorrectly. However, my mention of KOI8-R above is not directly related to the original example WSDL. A fellow Red-Hatter sent me various other Russian WSDL examples, with encodings in CP-1251, KOI8-R and UTF-8, and that's what I've been testing with and got working correctly by reading the byte stream into a String using ICU4J. My change also handles the situation of the original example WSDL, incorrect declaration and all. There is shared code for retrieving the WSDL, so I don't want to do something different for http:// http:// (looking for the Content-Type field) than I do for reading in from file:// or classpath://. Besides, the Content-Type field could be wrong, just as it we saw the declaration was wrong in the original example WSDL. David -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/540034#540034] Start a new discussion in JBoss ESB Development at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&cont...]

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Re: [jboss-dev-forums] [JBoss ESB Development] - Problem in retrieving WSDL from remote endpoint

by Magesh Bojan

Magesh Bojan [http://community.jboss.org/people/mageshbk%40jboss.com] replied to the discussion "Problem in retrieving WSDL from remote endpoint" To view the discussion, visit: http://community.jboss.org/message/540032#540032 -------------------------------------------------------------- > StreamUtils.readStreamString(stream, charset):String was incorrectly implemented. Well it is correctly implemented, it is meant to read bytes to String using the passed encoding and not for conversion. > Unfortunately, there is nothing in the JDK that can determine what character encoding a set of bytes or stream is, and this is paramount to creating a String that can be outputted correctly. Yes, that is why most applications do not try to guess the encoding themselves. Guessing/Intelligently identifying the encoding could pose problems, for e.g., "The user application may be expecting only the specified encoding, whereas due to intelligent scanning we might read all encoded streams" Will this lead to Security issue? I do not know ATM. > Maybe for the purpose of this bug, we just stick to fixing the WSDL encoding problem? I would do this. A setting in the SOAPProxy action like this would be sufficient for downloading and converting the file. <action name="proxy" ..> <property name="wsdl-encoding" value="ISO-8859-1" /> </action> But the major setback is this[1] as the BasicProfile mandates the WSDL and SOAP be only UTF-8 or UTF-16. One more thing is that the attached ItemService.wsdl is actually "ISO-8859-1" encoded file, but just has been specified as "UTF-8": This type of WSDL should not be allowed according to BP! [1] http://www.ws-i.org/Profiles/BasicProfile-1.0-2004-04-16.html#refinement1... http://www.ws-i.org/Profiles/BasicProfile-1.0-2004-04-16.html#refinement1... -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/540032#540032] Start a new discussion in JBoss ESB Development at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&cont...]

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Re: [jboss-dev-forums] [JBoss ESB Development] - Problem in retrieving WSDL from remote endpoint

by Keith Babo

Keith Babo [http://community.jboss.org/people/kcbabo] replied to the discussion "Problem in retrieving WSDL from remote endpoint" To view the discussion, visit: http://community.jboss.org/message/540029#540029 -------------------------------------------------------------- Couple of dumb questions: 1) I looked at the sample WSDL and the XML declaration indicates UTF-8 encoding. Shouldn't this be KOI8-R? In that case, you could use any XML parser to interpret the content, make any changes, then serialize using the encoding of your choice. 2) Since this is coming over HTTP, do you have access to the charset parameter in the Content-Type field? If so, you can use that as a hint for the document encoding (although XML declaration should be used, IMHO). `k. -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/540029#540029] Start a new discussion in JBoss ESB Development at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&cont...]

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Re: [jboss-dev-forums] [JBoss ESB Development] - Problem in retrieving WSDL from remote endpoint

by Keith Babo

Keith Babo [http://community.jboss.org/people/kcbabo] replied to the discussion "Problem in retrieving WSDL from remote endpoint" To view the discussion, visit: http://community.jboss.org/message/540028#540028 -------------------------------------------------------------- Couple of dumb questions: I looked at the example WSDL and the encoding declaration in the XML is UTF-8, not KOI8-R. I'm not an expert on KOI8-R, but a little googling leads me to believe that it's not UTF-8 compatible (natch, based on your findings). Is there a reason why KOI8-R is not declared as the encoding for the document? You can use any XML parser to suck up the content in that case. When retieving the WSDL via HTTP, is the Content-Type field providing a charset parameter? If so, you can use that to decode apporpriately. cheers, `k. -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/540028#540028] Start a new discussion in JBoss ESB Development at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&cont...]

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Re: [jboss-dev-forums] [JBoss Microcontainer Development POJO Server] - Service depends on Web Service

by Ales Justin

Ales Justin [http://community.jboss.org/people/alesj] replied to the discussion "Service depends on Web Service" To view the discussion, visit: http://community.jboss.org/message/540019#540019 -------------------------------------------------------------- The jboss-service.xml's <depends> element still works in new MC env. * http://community.jboss.org/wiki/SERVICEdotXML http://community.jboss.org/wiki/SERVICEdotXML -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/540019#540019] Start a new discussion in JBoss Microcontainer Development POJO Server at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&cont...]

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jboss-dev-forums April 2010