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Posted to users@tapestry.apache.org by Oscar Picasso <os...@yahoo.com> on 2006/04/16 16:24:41 UTC
Looking for a CATCHPA
Hi,
I'm looking for a CATCHPA library to use with my Tapestry application. I'm looking for something easy to use and efficient.
I welcome any advice.
Oscar
---------------------------------
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Re: Looking for a CATCHPA
Posted by Oscar Picasso <os...@yahoo.com>.
Do you have a code example of such an ImageCaptchaServlet?
Daniel Lydiard <dl...@hotmail.com> wrote: I'm using Jcaptcha with my tapestry application.
1. Load the ImageCaptchaServlet in your web.xml.
jcaptcha
com.foo.ImageCaptchaServlet
1
jcaptcha
/jcaptcha
2. Do something like this in a component class method to get the captcha
question.
captchaId = getPage().getRequest().getSession(true).getId();
return CaptchaServiceSingleton.getInstance().getQuestionForID(captchaId);
3. Point to the servlet for the captchaimage in your component .
4. To validate the user response
captchaId = getRequest().getSession(true).getId();
return
CaptchaServiceSingleton.getInstance().validateResponseForID(captchaId,
userResponse);
Hope this helps.
----- Original Message -----
From: "Oscar Picasso"
To: "Tapestry users"
Sent: Sunday, April 16, 2006 11:47 AM
Subject: Re: Looking for a CATCHPA
>I have taken a look. But I have no idea where to start. The api javadoc has
>only one class: JCaptchaCommentAuthenticator. It seems there is a problem
>with the site.
>
> Have you worked with JCaptcha? And do you know where to start?
>
> Oscar
>
>
>
> J�r�me BERNARD wrote: Have a loot at
> http://jcaptcha.sourceforge.net/
>
> Regards,
> J�r�me.
>
> On 4/16/06, Oscar Picasso wrote:
>> Hi,
>>
>> I'm looking for a CATCHPA library to use with my Tapestry application.
>> I'm looking for something easy to use and efficient.
>>
>> I welcome any advice.
>>
>> Oscar
>>
>>
>> ---------------------------------
>> Blab-away for as little as 1�/min. Make PC-to-Phone Calls using Yahoo!
>> Messenger with Voice.
>>
>
>
> --
> J�r�me BERNARD,
> Kalixia, SARL.
> http://weblog.kalixia.com
>
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>
>
>
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Re: Programmatically create PageLink ?
Posted by Oscar Picasso <os...@yahoo.com>.
Yes that was the kind of thing I was thinking of. I just forgot where the information was.
Aleksej <al...@ivs.lt> wrote: If you need to form link value by your self ( URL address ) then you need
to get appropriate IServiceEngine for it.
Maybe this will help to understand how does it works:
http://www.tapestryforums.com/force-redirect-vt880.html
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Re: Programmatically create PageLink ?
Posted by Aleksej <al...@ivs.lt>.
If you need to form link value by your self ( URL address ) then you need
to get appropriate IServiceEngine for it.
Maybe this will help to understand how does it works:
http://www.tapestryforums.com/force-redirect-vt880.html
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Re: Programmatically create PageLink ?
Posted by Oscar Picasso <os...@yahoo.com>.
It helps a lot. That was I was looking for. Thanks.
Oscar
Onno Scheffers <on...@piraya.nl> wrote: Oscar Picasso schreef:
>Hi,
>
>Thanks for the advice, but it's not what I intend to do. I already know how to use a PageLink.
>
>What I want to do, is to capture the output of a PageLink and use it in a parameter of another component, in that case in a FieldLabel. The actual code should look like this.
>
>
Would this help? I use it to generate the URL to a page through the
PageService:
@InjectObject("engine-service:page")
public abstract IEngineService getPageService();
public String getPageURL(IRequestCycle cycle, String pageName) {
return getPageService().getLink(false, pageName).getURL();
}
If you really want to capture the output of a component, I think you
need to provide your own MarkupWriter and parse it contents?
Regards,
Onno
> [input]
>
>You see the difference. I don't use a PageLink here but I want a generated output at myPageLink. myPageLink would be a programmatically generated PageLink.
>
>I have already seen something similar with other kind of generated links used in conjuction with a RedirectException. I just don't find this example.
>
>Oscar
>
>Peter Svensson
wrote: Well, I think it's quite easy, since you only need to provide the name of
>the page, like
>
>go to Page1
>
>So if you instead had
>
>go to Page
>
>And then had a method
>
>public String getPage()
>{
> return pagename;
>}
>
>In your class, you home free.
>
>See
>http://jakarta.apache.org/tapestry/tapestry/ComponentReference/PageLink.html
>for reference
>
>Cheers,
>PS
>On 4/24/06, Oscar Picasso wrote:
>
>
>>Hi,
>>
>>How to create programmaticlly a PageLink?
>>
>>Actually I want to use the rendered pagelink inside a FieldLabel.
>>
>>Something like:
>>
>>displayName="ognl:myPageLink "/>
>>
>>Maybe you have a better idea for what I intend to do.
>>
>>Oscar
>>
>>
>>---------------------------------
>>Celebrate Earth Day everyday! Discover 10 things you can do to help slow
>>climate change. Yahoo! Earth Day
>>
>>
>>
>
>
>
>---------------------------------
>Yahoo! Messenger with Voice. Make PC-to-Phone Calls to the US (and 30+ countries) for 2�/min or less.
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Re: Programmatically create PageLink ?
Posted by Onno Scheffers <on...@piraya.nl>.
Oscar Picasso schreef:
>Hi,
>
>Thanks for the advice, but it's not what I intend to do. I already know how to use a PageLink.
>
>What I want to do, is to capture the output of a PageLink and use it in a parameter of another component, in that case in a FieldLabel. The actual code should look like this.
>
>
Would this help? I use it to generate the URL to a page through the
PageService:
@InjectObject("engine-service:page")
public abstract IEngineService getPageService();
public String getPageURL(IRequestCycle cycle, String pageName) {
return getPageService().getLink(false, pageName).getURL();
}
If you really want to capture the output of a component, I think you
need to provide your own MarkupWriter and parse it contents?
Regards,
Onno
><span jwcid="@FieldLable" raw="true" displayName="ongl:'You should accept the ' + myPageLink" field="accept"/><input jwcid="accept@Checkbox" value="ognl:tos"/>
>
>You see the difference. I don't use a PageLink here but I want a generated output at myPageLink. myPageLink would be a programmatically generated PageLink.
>
>I have already seen something similar with other kind of generated links used in conjuction with a RedirectException. I just don't find this example.
>
>Oscar
>
>Peter Svensson <ps...@gmail.com> wrote: Well, I think it's quite easy, since you only need to provide the name of
>the page, like
>
>go to Page1
>
>So if you instead had
>
>go to Page
>
>And then had a method
>
>public String getPage()
>{
> return pagename;
>}
>
>In your class, you home free.
>
>See
>http://jakarta.apache.org/tapestry/tapestry/ComponentReference/PageLink.html
>for reference
>
>Cheers,
>PS
>On 4/24/06, Oscar Picasso wrote:
>
>
>>Hi,
>>
>>How to create programmaticlly a PageLink?
>>
>>Actually I want to use the rendered pagelink inside a FieldLabel.
>>
>>Something like:
>>
>>displayName="ognl:myPageLink "/>
>>
>>Maybe you have a better idea for what I intend to do.
>>
>>Oscar
>>
>>
>>---------------------------------
>>Celebrate Earth Day everyday! Discover 10 things you can do to help slow
>>climate change. Yahoo! Earth Day
>>
>>
>>
>
>
>
>---------------------------------
>Yahoo! Messenger with Voice. Make PC-to-Phone Calls to the US (and 30+ countries) for 2¢/min or less.
>
>
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Re: Programmatically create PageLink ?
Posted by Norbert Sándor <de...@erinors.com>.
You cannot programatically create a PageLink. What you can do:
- use the "page service" to generate the link itself (ie. the href part
of PageLink), see PageLink.java for an example
- Embed a PageLink in a Block, and render its contents to a custom
writer which is backed by for example a StringWriter. This way you can
get the entire output of the PageLink, including the <a> tag, etc.
I haven't followed this discussion, but I hope it helps.
Regards,
Norbi
Oscar Picasso wrote:
> Hi,
>
> Thanks for the advice, but it's not what I intend to do. I already know how to use a PageLink.
>
> What I want to do, is to capture the output of a PageLink and use it in a parameter of another component, in that case in a FieldLabel. The actual code should look like this.
>
> <span jwcid="@FieldLable" raw="true" displayName="ongl:'You should accept the ' + myPageLink" field="accept"/><input jwcid="accept@Checkbox" value="ognl:tos"/>
>
> You see the difference. I don't use a PageLink here but I want a generated output at myPageLink. myPageLink would be a programmatically generated PageLink.
>
> I have already seen something similar with other kind of generated links used in conjuction with a RedirectException. I just don't find this example.
>
> Oscar
>
> Peter Svensson <ps...@gmail.com> wrote: Well, I think it's quite easy, since you only need to provide the name of
> the page, like
>
> go to Page1
>
> So if you instead had
>
> go to Page
>
> And then had a method
>
> public String getPage()
> {
> return pagename;
> }
>
> In your class, you home free.
>
> See
> http://jakarta.apache.org/tapestry/tapestry/ComponentReference/PageLink.html
> for reference
>
> Cheers,
> PS
> On 4/24/06, Oscar Picasso wrote:
>
>> Hi,
>>
>> How to create programmaticlly a PageLink?
>>
>> Actually I want to use the rendered pagelink inside a FieldLabel.
>>
>> Something like:
>>
>> displayName="ognl:myPageLink "/>
>>
>> Maybe you have a better idea for what I intend to do.
>>
>> Oscar
>>
>>
>> ---------------------------------
>> Celebrate Earth Day everyday! Discover 10 things you can do to help slow
>> climate change. Yahoo! Earth Day
>>
>>
>
>
>
> ---------------------------------
> Yahoo! Messenger with Voice. Make PC-to-Phone Calls to the US (and 30+ countries) for 2¢/min or less.
>
> ------------------------------------------------------------------------
>
> No virus found in this incoming message.
> Checked by AVG Free Edition.
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Re: Programmatically create PageLink ?
Posted by Oscar Picasso <os...@yahoo.com>.
Hi,
Thanks for the advice, but it's not what I intend to do. I already know how to use a PageLink.
What I want to do, is to capture the output of a PageLink and use it in a parameter of another component, in that case in a FieldLabel. The actual code should look like this.
<span jwcid="@FieldLable" raw="true" displayName="ongl:'You should accept the ' + myPageLink" field="accept"/><input jwcid="accept@Checkbox" value="ognl:tos"/>
You see the difference. I don't use a PageLink here but I want a generated output at myPageLink. myPageLink would be a programmatically generated PageLink.
I have already seen something similar with other kind of generated links used in conjuction with a RedirectException. I just don't find this example.
Oscar
Peter Svensson <ps...@gmail.com> wrote: Well, I think it's quite easy, since you only need to provide the name of
the page, like
go to Page1
So if you instead had
go to Page
And then had a method
public String getPage()
{
return pagename;
}
In your class, you home free.
See
http://jakarta.apache.org/tapestry/tapestry/ComponentReference/PageLink.html
for reference
Cheers,
PS
On 4/24/06, Oscar Picasso wrote:
>
> Hi,
>
> How to create programmaticlly a PageLink?
>
> Actually I want to use the rendered pagelink inside a FieldLabel.
>
> Something like:
>
> displayName="ognl:myPageLink "/>
>
> Maybe you have a better idea for what I intend to do.
>
> Oscar
>
>
> ---------------------------------
> Celebrate Earth Day everyday! Discover 10 things you can do to help slow
> climate change. Yahoo! Earth Day
>
---------------------------------
Yahoo! Messenger with Voice. Make PC-to-Phone Calls to the US (and 30+ countries) for 2¢/min or less.
Re: Programmatically create PageLink ?
Posted by Peter Svensson <ps...@gmail.com>.
Well, I think it's quite easy, since you only need to provide the name of
the page, like
<a jwcid="@PageLink" page="Page1">go to Page1</a>
So if you instead had
<a jwcid="@PageLink" page="ognl:page">go to Page</a>
And then had a method
public String getPage()
{
return pagename;
}
In your class, you home free.
See
http://jakarta.apache.org/tapestry/tapestry/ComponentReference/PageLink.html
for reference
Cheers,
PS
On 4/24/06, Oscar Picasso <os...@yahoo.com> wrote:
>
> Hi,
>
> How to create programmaticlly a PageLink?
>
> Actually I want to use the rendered pagelink inside a FieldLabel.
>
> Something like:
> <span jwci="@FieldLabel" field="myField" raw="true"
> displayName="ognl:myPageLink "/>
>
> Maybe you have a better idea for what I intend to do.
>
> Oscar
>
>
> ---------------------------------
> Celebrate Earth Day everyday! Discover 10 things you can do to help slow
> climate change. Yahoo! Earth Day
>
Programmatically create PageLink ?
Posted by Oscar Picasso <os...@yahoo.com>.
Hi,
How to create programmaticlly a PageLink?
Actually I want to use the rendered pagelink inside a FieldLabel.
Something like:
<span jwci="@FieldLabel" field="myField" raw="true" displayName="ognl:myPageLink "/>
Maybe you have a better idea for what I intend to do.
Oscar
---------------------------------
Celebrate Earth Day everyday! Discover 10 things you can do to help slow climate change. Yahoo! Earth Day
Re: Looking for a CATCHPA
Posted by Adam Zimowski <zi...@gmail.com>.
Using Captcha as a separate servlet is very un-Tapestry like. The way
to do it in Tapestry is to setup a Hivemind service. My app uses it
like this (hivemodule.xml):
<service-point id="CaptchaService"
interface="org.apache.tapestry.engine.IEngineService">
<invoke-factory>
<construct class="org.opendating.tapestry.services.CaptchaService">
<set-object
property="linkFactory"
value="service:tapestry.url.LinkFactory"/>
</construct>
</invoke-factory>
</service-point>
<contribution configuration-id="tapestry.services.ApplicationServices">
<service name="captcha" object="service:CaptchaService"/>
</contribution>
You can then inject the service into the Captcha component you can
build. I posted links to the opensource app which uses this stuff.
Have a look at several interesting classes which do it 100% within
Tapestry, no external servlet.
Here are some: CaptchaService, OpenDatingCaptchaEngine, CaptchaComp,
RegistrationCaptchaPage.
The code is out there in the open. You could easily take pieces you
need and fit it right into your project.
Adam
On 17 Apr 2006 18:57:58 -0000, kelson tran
<de...@devlists.com> wrote:
> I've been reading this tread, and I found it very useful. I'm still new
> to Tapestry. How do you use the servlet in your page? What is needed
> to set it up?
>
> Thx in advance
>
>
> On Sunday, April 16, 2006, at 7:50 PM, Konstantin Ignatyev wrote:
> >--0-1251190441-1145242250=:93503
> >Content-Type: text/plain; charset=iso-8859-1
> >Content-Transfer-Encoding: 8bit
> >
> >Just did the following and it seems to work beautifully
> >
> >
> >
> >public class JCaptchaServlet extends HttpServlet {
> >
> >
> > protected void doGet(HttpServletRequest request,
> >HttpServletResponse response) throws ServletException, IOException {
> >
> > String captchaID = request.getSession(true).getId();
> >
> > // call the ManageableImageCaptchaService methods
> > byte[] captchaChallengeAsJpeg = null;
> > ByteArrayOutputStream jpegOutputStream = new ByteArrayOutputStream();
> > try {
> > ImageCaptchaService srv = App.getCaptchaService();
> > BufferedImage challenge =
> >srv.getImageChallengeForID(captchaID, request.getLocale());
> > Object challengeString = srv.getQuestionForID(captchaID,
> >request.getLocale());
> > // the output stream to render the captcha image as jpeg into
> >
> > // a jpeg encoder
> > JPEGImageEncoder jpegEncoder =
> >JPEGCodec.createJPEGEncoder(jpegOutputStream);
> > jpegEncoder.encode(challenge);
> > } catch (IllegalArgumentException e) {
> > // log a security warning and return a 404...
> >// if (log.isWarnEnabled())
> >// {
> >// log.warn(
> >// "There was a try from "
> >// + request.getRemoteAddr()
> >// + " to render an URL without ID"
> >// + " or with a too long one");
> >// theResponse.sendError(HttpServletResponse.SC_NOT_FOUND);
> > return;
> >// }
> > } catch (CaptchaServiceException e) {
> > // log and return a 404 instead of an image...
> >// log.warn(
> >// "Error trying to generate a captcha and "
> >// + "render its challenge as JPEG",
> >// e);
> > response.sendError(HttpServletResponse.SC_NOT_FOUND);
> > return;
> > }
> >
> > captchaChallengeAsJpeg = jpegOutputStream.toByteArray();
> >
> > // render the captcha challenge as a JPEG image in the response
> > response.setHeader("Cache-Control", "no-store");
> > response.setHeader("Pragma", "no-cache");
> > response.setDateHeader("Expires", 0);
> >
> > response.setContentType("image/jpeg");
> > ServletOutputStream responseOutputStream =
> > response.getOutputStream();
> > responseOutputStream.write(captchaChallengeAsJpeg);
> > }
> >
> >
> >}
> >
> >------------
> >private static ImageCaptchaService captchaService;
> > private static Object captchaGuard = new Object();
> >
> > public static ImageCaptchaService getCaptchaService() {
> > synchronized (captchaGuard) {
> > if (captchaService == null) {
> > captchaService = new EhcacheManageableImageCaptchaService(
> >new SimpleListImageCaptchaEngine() , 180, 100000){
> >
> > };
> > }
> > return captchaService;
> > }
> > }
> >
> >----------------------
> >
> >
> >
> >Validation
> >
> >@InjectObject( "service:tapestry.globals.HttpServletRequest")
> > public abstract HttpServletRequest getHttpRequest();
> >
> >............
> >if( App.getCaptchaService().validateResponseForID(
> >getHttpRequest().getSession(true).getId(), getCaptchaAnswer() )){
> > System.out.println("CAPTCHA - Pass");
> > }else{
> >
> >
> >
> >Oscar Picasso <os...@yahoo.com> wrote: Do you have a code
> >example of such an ImageCaptchaServlet?
> >
> >Daniel Lydiard wrote: I'm using Jcaptcha with my tapestry application.
> >
> >1. Load the ImageCaptchaServlet in your web.xml.
> >
> >
> >jcaptcha
> >
> >com.foo.ImageCaptchaServlet
> >
> >1
> >
> >
> >
> >
> >
> >
> >jcaptcha
> >
> >/jcaptcha
> >
> >
> >
> >
> >2. Do something like this in a component class method to get the captcha
> >question.
> >captchaId = getPage().getRequest().getSession(true).getId();
> >return CaptchaServiceSingleton.getInstance().getQuestionForID(captchaId);
> >
> >3. Point to the servlet for the captchaimage in your component .
> >
> >4. To validate the user response
> >captchaId = getRequest().getSession(true).getId();
> >
> >return
> >CaptchaServiceSingleton.getInstance().validateResponseForID(captchaId,
> >userResponse);
> >
> >
> >Hope this helps.
> >
> >
> >----- Original Message -----
> >From: "Oscar Picasso"
> >To: "Tapestry users"
> >Sent: Sunday, April 16, 2006 11:47 AM
> >Subject: Re: Looking for a CATCHPA
> >
> >
> >>I have taken a look. But I have no idea where to start. The api
> >>javadoc has
> >>only one class: JCaptchaCommentAuthenticator. It seems there is a
> >>problem
> >>with the site.
> >>
> >> Have you worked with JCaptcha? And do you know where to start?
> >>
> >> Oscar
> >>
> >>
> >>
> >> J�r�me BERNARD wrote: Have a loot at
> >> http://jcaptcha.sourceforge.net/
> >>
> >> Regards,
> >> J�r�me.
> >>
> >> On 4/16/06, Oscar Picasso wrote:
> >>> Hi,
> >>>
> >>> I'm looking for a CATCHPA library to use with my Tapestry application.
> >>> I'm looking for something easy to use and efficient.
> >>>
> >>> I welcome any advice.
> >>>
> >>> Oscar
> >>>
> >>>
> >>> ---------------------------------
> >>> Blab-away for as little as 1�/min. Make PC-to-Phone Calls
> >>>using Yahoo!
> >>> Messenger with Voice.
> >>>
> >>
> >>
> >> --
> >> J�r�me BERNARD,
> >> Kalixia, SARL.
> >> http://weblog.kalixia.com
> >>
> >> ---------------------------------------------------------------------
> >> To unsubscribe, e-mail: tapestry-user-unsubscribe@jakarta.apache.org
> >> For additional commands, e-mail: tapestry-user-help@jakarta.apache.org
> >>
> >>
> >>
> >>
> >> ---------------------------------
> >> Yahoo! Messenger with Voice. PC-to-Phone calls for ridiculously
> >>low rates.
> >
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> >
> >
> >
> >__________________________________________________
> >Do You Yahoo!?
> >Tired of spam? Yahoo! Mail has the best spam protection around
> >http://mail.yahoo.com
> >
> >
> >Konstantin Ignatyev
> >
> >
> >
> >
> >PS: If this is a typical day on planet earth, humans will add
> >fifteen million tons of carbon to the atmosphere, destroy 115 square
> >miles of tropical rainforest, create seventy-two miles of desert,
> >eliminate between forty to one hundred species, erode seventy-one
> >million tons of topsoil, add 2,700 tons of CFCs to the stratosphere,
> >and increase their population by 263,000
> >
> >Bowers, C.A. The Culture of Denial: Why the Environmental Movement
> >Needs a Strategy for Reforming Universities and Public Schools. New
> >York: State University of New York Press, 1997: (4) (5) (p.206)
> >--0-1251190441-1145242250=:93503--
>
>
>
>
> --
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>
Property Selection on submit to an anchor
Posted by James Sherwood <js...@rgisolutions.com>.
Hello,
I was wondering if anyone would know how I could have a property
selection(dropdown box) with an onchange submit go to an anchor in the page
after it submits?
Thanks,
James
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doing an anchor in a form submit?
Posted by James Sherwood <js...@rgisolutions.com>.
I have done this before I beleive but can't seem to remember how or figure
it out again.
Basically I have a form submit and if a certain condition is met I want to
finish the submit by sending them to a certian part of the next page by
using an anchor.
I.E.: cycle.activate("Submittedpage#secondsection") (i know this doesnt work
but its an example:)
any ideas?
Thanks,
James
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Re: Looking for a CATCHPA
Posted by Adam Zimowski <zi...@gmail.com>.
Check out www.opendating.org which uses JCaptcha. The source code is
easily browsable from http://www.opendating.org/dev/javadoc/.
RegistrationCaptchaPage is what you want. You can download complete
source code from sourceforge.net/projects/opendating.
Regards,
Adam
On 4/17/06, Oscar Picasso <os...@yahoo.com> wrote:
> I'm going to try it in my application. Thanks.
>
> Konstantin Ignatyev <kg...@yahoo.com> wrote: Just did the following and it seems to work beautifully
>
>
>
> public class JCaptchaServlet extends HttpServlet {
>
>
> protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
>
> String captchaID = request.getSession(true).getId();
>
> // call the ManageableImageCaptchaService methods
> byte[] captchaChallengeAsJpeg = null;
> ByteArrayOutputStream jpegOutputStream = new ByteArrayOutputStream();
> try {
> ImageCaptchaService srv = App.getCaptchaService();
> BufferedImage challenge = srv.getImageChallengeForID(captchaID, request.getLocale());
> Object challengeString = srv.getQuestionForID(captchaID, request.getLocale());
> // the output stream to render the captcha image as jpeg into
>
> // a jpeg encoder
> JPEGImageEncoder jpegEncoder = JPEGCodec.createJPEGEncoder(jpegOutputStream);
> jpegEncoder.encode(challenge);
> } catch (IllegalArgumentException e) {
> // log a security warning and return a 404...
> // if (log.isWarnEnabled())
> // {
> // log.warn(
> // "There was a try from "
> // + request.getRemoteAddr()
> // + " to render an URL without ID"
> // + " or with a too long one");
> // theResponse.sendError(HttpServletResponse.SC_NOT_FOUND);
> return;
> // }
> } catch (CaptchaServiceException e) {
> // log and return a 404 instead of an image...
> // log.warn(
> // "Error trying to generate a captcha and "
> // + "render its challenge as JPEG",
> // e);
> response.sendError(HttpServletResponse.SC_NOT_FOUND);
> return;
> }
>
> captchaChallengeAsJpeg = jpegOutputStream.toByteArray();
>
> // render the captcha challenge as a JPEG image in the response
> response.setHeader("Cache-Control", "no-store");
> response.setHeader("Pragma", "no-cache");
> response.setDateHeader("Expires", 0);
>
> response.setContentType("image/jpeg");
> ServletOutputStream responseOutputStream =
> response.getOutputStream();
> responseOutputStream.write(captchaChallengeAsJpeg);
> }
>
>
> }
>
> ------------
> private static ImageCaptchaService captchaService;
> private static Object captchaGuard = new Object();
>
> public static ImageCaptchaService getCaptchaService() {
> synchronized (captchaGuard) {
> if (captchaService == null) {
> captchaService = new EhcacheManageableImageCaptchaService( new SimpleListImageCaptchaEngine() , 180, 100000){
>
> };
> }
> return captchaService;
> }
> }
>
> ----------------------
>
>
>
> Validation
>
> @InjectObject( "service:tapestry.globals.HttpServletRequest")
> public abstract HttpServletRequest getHttpRequest();
>
> ............
> if( App.getCaptchaService().validateResponseForID( getHttpRequest().getSession(true).getId(), getCaptchaAnswer() )){
> System.out.println("CAPTCHA - Pass");
> }else{
>
>
>
> Oscar Picasso wrote: Do you have a code example of such an ImageCaptchaServlet?
>
> Daniel Lydiard wrote: I'm using Jcaptcha with my tapestry application.
>
> 1. Load the ImageCaptchaServlet in your web.xml.
>
>
> jcaptcha
>
> com.foo.ImageCaptchaServlet
>
> 1
>
>
>
>
>
>
> jcaptcha
>
> /jcaptcha
>
>
>
>
> 2. Do something like this in a component class method to get the captcha
> question.
> captchaId = getPage().getRequest().getSession(true).getId();
> return CaptchaServiceSingleton.getInstance().getQuestionForID(captchaId);
>
> 3. Point to the servlet for the captchaimage in your component .
>
> 4. To validate the user response
> captchaId = getRequest().getSession(true).getId();
>
> return
> CaptchaServiceSingleton.getInstance().validateResponseForID(captchaId,
> userResponse);
>
>
> Hope this helps.
>
>
> ----- Original Message -----
> From: "Oscar Picasso"
> To: "Tapestry users"
> Sent: Sunday, April 16, 2006 11:47 AM
> Subject: Re: Looking for a CATCHPA
>
>
> >I have taken a look. But I have no idea where to start. The api javadoc has
> >only one class: JCaptchaCommentAuthenticator. It seems there is a problem
> >with the site.
> >
> > Have you worked with JCaptcha? And do you know where to start?
> >
> > Oscar
> >
> >
> >
> > J�r�me BERNARD wrote: Have a loot at
> > http://jcaptcha.sourceforge.net/
> >
> > Regards,
> > J�r�me.
> >
> > On 4/16/06, Oscar Picasso wrote:
> >> Hi,
> >>
> >> I'm looking for a CATCHPA library to use with my Tapestry application.
> >> I'm looking for something easy to use and efficient.
> >>
> >> I welcome any advice.
> >>
> >> Oscar
> >>
> >>
> >> ---------------------------------
> >> Blab-away for as little as 1�/min. Make PC-to-Phone Calls using Yahoo!
> >> Messenger with Voice.
> >>
> >
> >
> > --
> > J�r�me BERNARD,
> > Kalixia, SARL.
> > http://weblog.kalixia.com
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: tapestry-user-unsubscribe@jakarta.apache.org
> > For additional commands, e-mail: tapestry-user-help@jakarta.apache.org
> >
> >
> >
> >
> > ---------------------------------
> > Yahoo! Messenger with Voice. PC-to-Phone calls for ridiculously low rates.
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: tapestry-user-unsubscribe@jakarta.apache.org
> For additional commands, e-mail: tapestry-user-help@jakarta.apache.org
>
>
>
> __________________________________________________
> Do You Yahoo!?
> Tired of spam? Yahoo! Mail has the best spam protection around
> http://mail.yahoo.com
>
>
> Konstantin Ignatyev
>
>
>
>
> PS: If this is a typical day on planet earth, humans will add fifteen million tons of carbon to the atmosphere, destroy 115 square miles of tropical rainforest, create seventy-two miles of desert, eliminate between forty to one hundred species, erode seventy-one million tons of topsoil, add 2,700 tons of CFCs to the stratosphere, and increase their population by 263,000
>
> Bowers, C.A. The Culture of Denial: Why the Environmental Movement Needs a Strategy for Reforming Universities and Public Schools. New York: State University of New York Press, 1997: (4) (5) (p.206)
>
>
> ---------------------------------
> New Yahoo! Messenger with Voice. Call regular phones from your PC and save big.
>
Re: Looking for a CATCHPA
Posted by Daniel Lydiard <dl...@hotmail.com>.
Whoops I forgot to mention that I actually had to create the servlet code,
but it's included in the JCaptcha example...
----- Original Message -----
From: "Oscar Picasso" <os...@yahoo.com>
To: "Tapestry users" <ta...@jakarta.apache.org>
Sent: Monday, April 17, 2006 5:41 AM
Subject: Re: Looking for a CATCHPA
> I'm going to try it in my application. Thanks.
>
> Konstantin Ignatyev <kg...@yahoo.com> wrote: Just did the following
> and it seems to work beautifully
>
>
>
> public class JCaptchaServlet extends HttpServlet {
>
>
> protected void doGet(HttpServletRequest request, HttpServletResponse
> response) throws ServletException, IOException {
>
> String captchaID = request.getSession(true).getId();
>
> // call the ManageableImageCaptchaService methods
> byte[] captchaChallengeAsJpeg = null;
> ByteArrayOutputStream jpegOutputStream = new ByteArrayOutputStream();
> try {
> ImageCaptchaService srv = App.getCaptchaService();
> BufferedImage challenge = srv.getImageChallengeForID(captchaID,
> request.getLocale());
> Object challengeString = srv.getQuestionForID(captchaID,
> request.getLocale());
> // the output stream to render the captcha image as jpeg into
>
> // a jpeg encoder
> JPEGImageEncoder jpegEncoder =
> JPEGCodec.createJPEGEncoder(jpegOutputStream);
> jpegEncoder.encode(challenge);
> } catch (IllegalArgumentException e) {
> // log a security warning and return a 404...
> // if (log.isWarnEnabled())
> // {
> // log.warn(
> // "There was a try from "
> // + request.getRemoteAddr()
> // + " to render an URL without ID"
> // + " or with a too long one");
> // theResponse.sendError(HttpServletResponse.SC_NOT_FOUND);
> return;
> // }
> } catch (CaptchaServiceException e) {
> // log and return a 404 instead of an image...
> // log.warn(
> // "Error trying to generate a captcha and "
> // + "render its challenge as JPEG",
> // e);
> response.sendError(HttpServletResponse.SC_NOT_FOUND);
> return;
> }
>
> captchaChallengeAsJpeg = jpegOutputStream.toByteArray();
>
> // render the captcha challenge as a JPEG image in the response
> response.setHeader("Cache-Control", "no-store");
> response.setHeader("Pragma", "no-cache");
> response.setDateHeader("Expires", 0);
>
> response.setContentType("image/jpeg");
> ServletOutputStream responseOutputStream =
> response.getOutputStream();
> responseOutputStream.write(captchaChallengeAsJpeg);
> }
>
>
> }
>
> ------------
> private static ImageCaptchaService captchaService;
> private static Object captchaGuard = new Object();
>
> public static ImageCaptchaService getCaptchaService() {
> synchronized (captchaGuard) {
> if (captchaService == null) {
> captchaService = new EhcacheManageableImageCaptchaService( new
> SimpleListImageCaptchaEngine() , 180, 100000){
>
> };
> }
> return captchaService;
> }
> }
>
> ----------------------
>
>
>
> Validation
>
> @InjectObject( "service:tapestry.globals.HttpServletRequest")
> public abstract HttpServletRequest getHttpRequest();
>
> ............
> if( App.getCaptchaService().validateResponseForID(
> getHttpRequest().getSession(true).getId(), getCaptchaAnswer() )){
> System.out.println("CAPTCHA - Pass");
> }else{
>
>
>
> Oscar Picasso wrote: Do you have a code example of such an
> ImageCaptchaServlet?
>
> Daniel Lydiard wrote: I'm using Jcaptcha with my tapestry application.
>
> 1. Load the ImageCaptchaServlet in your web.xml.
>
>
> jcaptcha
>
> com.foo.ImageCaptchaServlet
>
> 1
>
>
>
>
>
>
> jcaptcha
>
> /jcaptcha
>
>
>
>
> 2. Do something like this in a component class method to get the captcha
> question.
> captchaId = getPage().getRequest().getSession(true).getId();
> return CaptchaServiceSingleton.getInstance().getQuestionForID(captchaId);
>
> 3. Point to the servlet for the captchaimage in your component .
>
> 4. To validate the user response
> captchaId = getRequest().getSession(true).getId();
>
> return
> CaptchaServiceSingleton.getInstance().validateResponseForID(captchaId,
> userResponse);
>
>
> Hope this helps.
>
>
> ----- Original Message -----
> From: "Oscar Picasso"
> To: "Tapestry users"
> Sent: Sunday, April 16, 2006 11:47 AM
> Subject: Re: Looking for a CATCHPA
>
>
>>I have taken a look. But I have no idea where to start. The api javadoc
>>has
>>only one class: JCaptchaCommentAuthenticator. It seems there is a problem
>>with the site.
>>
>> Have you worked with JCaptcha? And do you know where to start?
>>
>> Oscar
>>
>>
>>
>> J�r�me BERNARD wrote: Have a loot at
>> http://jcaptcha.sourceforge.net/
>>
>> Regards,
>> J�r�me.
>>
>> On 4/16/06, Oscar Picasso wrote:
>>> Hi,
>>>
>>> I'm looking for a CATCHPA library to use with my Tapestry application.
>>> I'm looking for something easy to use and efficient.
>>>
>>> I welcome any advice.
>>>
>>> Oscar
>>>
>>>
>>> ---------------------------------
>>> Blab-away for as little as 1�/min. Make PC-to-Phone Calls using
>>> Yahoo!
>>> Messenger with Voice.
>>>
>>
>>
>> --
>> J�r�me BERNARD,
>> Kalixia, SARL.
>> http://weblog.kalixia.com
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: tapestry-user-unsubscribe@jakarta.apache.org
>> For additional commands, e-mail: tapestry-user-help@jakarta.apache.org
>>
>>
>>
>>
>> ---------------------------------
>> Yahoo! Messenger with Voice. PC-to-Phone calls for ridiculously low
>> rates.
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: tapestry-user-unsubscribe@jakarta.apache.org
> For additional commands, e-mail: tapestry-user-help@jakarta.apache.org
>
>
>
> __________________________________________________
> Do You Yahoo!?
> Tired of spam? Yahoo! Mail has the best spam protection around
> http://mail.yahoo.com
>
>
> Konstantin Ignatyev
>
>
>
>
> PS: If this is a typical day on planet earth, humans will add fifteen
> million tons of carbon to the atmosphere, destroy 115 square miles of
> tropical rainforest, create seventy-two miles of desert, eliminate between
> forty to one hundred species, erode seventy-one million tons of topsoil,
> add 2,700 tons of CFCs to the stratosphere, and increase their population
> by 263,000
>
> Bowers, C.A. The Culture of Denial: Why the Environmental Movement Needs
> a Strategy for Reforming Universities and Public Schools. New York:
> State University of New York Press, 1997: (4) (5) (p.206)
>
>
> ---------------------------------
> New Yahoo! Messenger with Voice. Call regular phones from your PC and save
> big.
---------------------------------------------------------------------
To unsubscribe, e-mail: tapestry-user-unsubscribe@jakarta.apache.org
For additional commands, e-mail: tapestry-user-help@jakarta.apache.org
Re: Looking for a CATCHPA
Posted by Oscar Picasso <os...@yahoo.com>.
I'm going to try it in my application. Thanks.
Konstantin Ignatyev <kg...@yahoo.com> wrote: Just did the following and it seems to work beautifully
public class JCaptchaServlet extends HttpServlet {
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String captchaID = request.getSession(true).getId();
// call the ManageableImageCaptchaService methods
byte[] captchaChallengeAsJpeg = null;
ByteArrayOutputStream jpegOutputStream = new ByteArrayOutputStream();
try {
ImageCaptchaService srv = App.getCaptchaService();
BufferedImage challenge = srv.getImageChallengeForID(captchaID, request.getLocale());
Object challengeString = srv.getQuestionForID(captchaID, request.getLocale());
// the output stream to render the captcha image as jpeg into
// a jpeg encoder
JPEGImageEncoder jpegEncoder = JPEGCodec.createJPEGEncoder(jpegOutputStream);
jpegEncoder.encode(challenge);
} catch (IllegalArgumentException e) {
// log a security warning and return a 404...
// if (log.isWarnEnabled())
// {
// log.warn(
// "There was a try from "
// + request.getRemoteAddr()
// + " to render an URL without ID"
// + " or with a too long one");
// theResponse.sendError(HttpServletResponse.SC_NOT_FOUND);
return;
// }
} catch (CaptchaServiceException e) {
// log and return a 404 instead of an image...
// log.warn(
// "Error trying to generate a captcha and "
// + "render its challenge as JPEG",
// e);
response.sendError(HttpServletResponse.SC_NOT_FOUND);
return;
}
captchaChallengeAsJpeg = jpegOutputStream.toByteArray();
// render the captcha challenge as a JPEG image in the response
response.setHeader("Cache-Control", "no-store");
response.setHeader("Pragma", "no-cache");
response.setDateHeader("Expires", 0);
response.setContentType("image/jpeg");
ServletOutputStream responseOutputStream =
response.getOutputStream();
responseOutputStream.write(captchaChallengeAsJpeg);
}
}
------------
private static ImageCaptchaService captchaService;
private static Object captchaGuard = new Object();
public static ImageCaptchaService getCaptchaService() {
synchronized (captchaGuard) {
if (captchaService == null) {
captchaService = new EhcacheManageableImageCaptchaService( new SimpleListImageCaptchaEngine() , 180, 100000){
};
}
return captchaService;
}
}
----------------------
Validation
@InjectObject( "service:tapestry.globals.HttpServletRequest")
public abstract HttpServletRequest getHttpRequest();
............
if( App.getCaptchaService().validateResponseForID( getHttpRequest().getSession(true).getId(), getCaptchaAnswer() )){
System.out.println("CAPTCHA - Pass");
}else{
Oscar Picasso wrote: Do you have a code example of such an ImageCaptchaServlet?
Daniel Lydiard wrote: I'm using Jcaptcha with my tapestry application.
1. Load the ImageCaptchaServlet in your web.xml.
jcaptcha
com.foo.ImageCaptchaServlet
1
jcaptcha
/jcaptcha
2. Do something like this in a component class method to get the captcha
question.
captchaId = getPage().getRequest().getSession(true).getId();
return CaptchaServiceSingleton.getInstance().getQuestionForID(captchaId);
3. Point to the servlet for the captchaimage in your component .
4. To validate the user response
captchaId = getRequest().getSession(true).getId();
return
CaptchaServiceSingleton.getInstance().validateResponseForID(captchaId,
userResponse);
Hope this helps.
----- Original Message -----
From: "Oscar Picasso"
To: "Tapestry users"
Sent: Sunday, April 16, 2006 11:47 AM
Subject: Re: Looking for a CATCHPA
>I have taken a look. But I have no idea where to start. The api javadoc has
>only one class: JCaptchaCommentAuthenticator. It seems there is a problem
>with the site.
>
> Have you worked with JCaptcha? And do you know where to start?
>
> Oscar
>
>
>
> J�r�me BERNARD wrote: Have a loot at
> http://jcaptcha.sourceforge.net/
>
> Regards,
> J�r�me.
>
> On 4/16/06, Oscar Picasso wrote:
>> Hi,
>>
>> I'm looking for a CATCHPA library to use with my Tapestry application.
>> I'm looking for something easy to use and efficient.
>>
>> I welcome any advice.
>>
>> Oscar
>>
>>
>> ---------------------------------
>> Blab-away for as little as 1�/min. Make PC-to-Phone Calls using Yahoo!
>> Messenger with Voice.
>>
>
>
> --
> J�r�me BERNARD,
> Kalixia, SARL.
> http://weblog.kalixia.com
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: tapestry-user-unsubscribe@jakarta.apache.org
> For additional commands, e-mail: tapestry-user-help@jakarta.apache.org
>
>
>
>
> ---------------------------------
> Yahoo! Messenger with Voice. PC-to-Phone calls for ridiculously low rates.
---------------------------------------------------------------------
To unsubscribe, e-mail: tapestry-user-unsubscribe@jakarta.apache.org
For additional commands, e-mail: tapestry-user-help@jakarta.apache.org
__________________________________________________
Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around
http://mail.yahoo.com
Konstantin Ignatyev
PS: If this is a typical day on planet earth, humans will add fifteen million tons of carbon to the atmosphere, destroy 115 square miles of tropical rainforest, create seventy-two miles of desert, eliminate between forty to one hundred species, erode seventy-one million tons of topsoil, add 2,700 tons of CFCs to the stratosphere, and increase their population by 263,000
Bowers, C.A. The Culture of Denial: Why the Environmental Movement Needs a Strategy for Reforming Universities and Public Schools. New York: State University of New York Press, 1997: (4) (5) (p.206)
---------------------------------
New Yahoo! Messenger with Voice. Call regular phones from your PC and save big.
Re: Looking for a CATCHPA
Posted by Konstantin Ignatyev <kg...@yahoo.com>.
simply put this in web.xml
<servlet>
<servlet-name>captcha</servlet-name>
<servlet-class>zzzzweb.JCaptchaServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>captcha</servlet-name>
<url-pattern>/captcha</url-pattern>
</servlet-mapping>
And servlet and Tapestry both use the same (singleton) instance of CATCHA service
kelson tran <de...@devlists.com> wrote: I've been reading this tread, and I found it very useful. I'm still new
to Tapestry. How do you use the servlet in your page? What is needed
to set it up?
Thx in advance
On Sunday, April 16, 2006, at 7:50 PM, Konstantin Ignatyev wrote:
>--0-1251190441-1145242250=:93503
>Content-Type: text/plain; charset=iso-8859-1
>Content-Transfer-Encoding: 8bit
>
>Just did the following and it seems to work beautifully
>
>
>
>public class JCaptchaServlet extends HttpServlet {
>
>
> protected void doGet(HttpServletRequest request,
>HttpServletResponse response) throws ServletException, IOException {
>
> String captchaID = request.getSession(true).getId();
>
> // call the ManageableImageCaptchaService methods
> byte[] captchaChallengeAsJpeg = null;
> ByteArrayOutputStream jpegOutputStream = new ByteArrayOutputStream();
> try {
> ImageCaptchaService srv = App.getCaptchaService();
> BufferedImage challenge =
>srv.getImageChallengeForID(captchaID, request.getLocale());
> Object challengeString = srv.getQuestionForID(captchaID,
>request.getLocale());
> // the output stream to render the captcha image as jpeg into
>
> // a jpeg encoder
> JPEGImageEncoder jpegEncoder =
>JPEGCodec.createJPEGEncoder(jpegOutputStream);
> jpegEncoder.encode(challenge);
> } catch (IllegalArgumentException e) {
> // log a security warning and return a 404...
>// if (log.isWarnEnabled())
>// {
>// log.warn(
>// "There was a try from "
>// + request.getRemoteAddr()
>// + " to render an URL without ID"
>// + " or with a too long one");
>// theResponse.sendError(HttpServletResponse.SC_NOT_FOUND);
> return;
>// }
> } catch (CaptchaServiceException e) {
> // log and return a 404 instead of an image...
>// log.warn(
>// "Error trying to generate a captcha and "
>// + "render its challenge as JPEG",
>// e);
> response.sendError(HttpServletResponse.SC_NOT_FOUND);
> return;
> }
>
> captchaChallengeAsJpeg = jpegOutputStream.toByteArray();
>
> // render the captcha challenge as a JPEG image in the response
> response.setHeader("Cache-Control", "no-store");
> response.setHeader("Pragma", "no-cache");
> response.setDateHeader("Expires", 0);
>
> response.setContentType("image/jpeg");
> ServletOutputStream responseOutputStream =
> response.getOutputStream();
> responseOutputStream.write(captchaChallengeAsJpeg);
> }
>
>
>}
>
>------------
>private static ImageCaptchaService captchaService;
> private static Object captchaGuard = new Object();
>
> public static ImageCaptchaService getCaptchaService() {
> synchronized (captchaGuard) {
> if (captchaService == null) {
> captchaService = new EhcacheManageableImageCaptchaService(
>new SimpleListImageCaptchaEngine() , 180, 100000){
>
> };
> }
> return captchaService;
> }
> }
>
>----------------------
>
>
>
>Validation
>
>@InjectObject( "service:tapestry.globals.HttpServletRequest")
> public abstract HttpServletRequest getHttpRequest();
>
>............
>if( App.getCaptchaService().validateResponseForID(
>getHttpRequest().getSession(true).getId(), getCaptchaAnswer() )){
> System.out.println("CAPTCHA - Pass");
> }else{
>
>
>
>Oscar Picasso wrote: Do you have a code
>example of such an ImageCaptchaServlet?
>
>Daniel Lydiard wrote: I'm using Jcaptcha with my tapestry application.
>
>1. Load the ImageCaptchaServlet in your web.xml.
>
>
>jcaptcha
>
>com.foo.ImageCaptchaServlet
>
>1
>
>
>
>
>
>
>jcaptcha
>
>/jcaptcha
>
>
>
>
>2. Do something like this in a component class method to get the captcha
>question.
>captchaId = getPage().getRequest().getSession(true).getId();
>return CaptchaServiceSingleton.getInstance().getQuestionForID(captchaId);
>
>3. Point to the servlet for the captchaimage in your component .
>
>4. To validate the user response
>captchaId = getRequest().getSession(true).getId();
>
>return
>CaptchaServiceSingleton.getInstance().validateResponseForID(captchaId,
>userResponse);
>
>
>Hope this helps.
>
>
>----- Original Message -----
>From: "Oscar Picasso"
>To: "Tapestry users"
>Sent: Sunday, April 16, 2006 11:47 AM
>Subject: Re: Looking for a CATCHPA
>
>
>>I have taken a look. But I have no idea where to start. The api
>>javadoc has
>>only one class: JCaptchaCommentAuthenticator. It seems there is a
>>problem
>>with the site.
>>
>> Have you worked with JCaptcha? And do you know where to start?
>>
>> Oscar
>>
>>
>>
>> J�r�me BERNARD wrote: Have a loot at
>> http://jcaptcha.sourceforge.net/
>>
>> Regards,
>> J�r�me.
>>
>> On 4/16/06, Oscar Picasso wrote:
>>> Hi,
>>>
>>> I'm looking for a CATCHPA library to use with my Tapestry application.
>>> I'm looking for something easy to use and efficient.
>>>
>>> I welcome any advice.
>>>
>>> Oscar
>>>
>>>
>>> ---------------------------------
>>> Blab-away for as little as 1�/min. Make PC-to-Phone Calls
>>>using Yahoo!
>>> Messenger with Voice.
>>>
>>
>>
>> --
>> J�r�me BERNARD,
>> Kalixia, SARL.
>> http://weblog.kalixia.com
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: tapestry-user-unsubscribe@jakarta.apache.org
>> For additional commands, e-mail: tapestry-user-help@jakarta.apache.org
>>
>>
>>
>>
>> ---------------------------------
>> Yahoo! Messenger with Voice. PC-to-Phone calls for ridiculously
>>low rates.
>
>---------------------------------------------------------------------
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>
>
>
>__________________________________________________
>Do You Yahoo!?
>Tired of spam? Yahoo! Mail has the best spam protection around
>http://mail.yahoo.com
>
>
>Konstantin Ignatyev
>
>
>
>
>PS: If this is a typical day on planet earth, humans will add
>fifteen million tons of carbon to the atmosphere, destroy 115 square
>miles of tropical rainforest, create seventy-two miles of desert,
>eliminate between forty to one hundred species, erode seventy-one
>million tons of topsoil, add 2,700 tons of CFCs to the stratosphere,
>and increase their population by 263,000
>
>Bowers, C.A. The Culture of Denial: Why the Environmental Movement
>Needs a Strategy for Reforming Universities and Public Schools. New
>York: State University of New York Press, 1997: (4) (5) (p.206)
>--0-1251190441-1145242250=:93503--
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PS: If this is a typical day on planet earth, humans will add fifteen million tons of carbon to the atmosphere, destroy 115 square miles of tropical rainforest, create seventy-two miles of desert, eliminate between forty to one hundred species, erode seventy-one million tons of topsoil, add 2,700 tons of CFCs to the stratosphere, and increase their population by 263,000
Bowers, C.A. The Culture of Denial: Why the Environmental Movement Needs a Strategy for Reforming Universities and Public Schools. New York: State University of New York Press, 1997: (4) (5) (p.206)
Re: Looking for a CATCHPA
Posted by kelson tran <de...@devlists.com>.
I've been reading this tread, and I found it very useful. I'm still new
to Tapestry. How do you use the servlet in your page? What is needed
to set it up?
Thx in advance
On Sunday, April 16, 2006, at 7:50 PM, Konstantin Ignatyev wrote:
>--0-1251190441-1145242250=:93503
>Content-Type: text/plain; charset=iso-8859-1
>Content-Transfer-Encoding: 8bit
>
>Just did the following and it seems to work beautifully
>
>
>
>public class JCaptchaServlet extends HttpServlet {
>
>
> protected void doGet(HttpServletRequest request,
>HttpServletResponse response) throws ServletException, IOException {
>
> String captchaID = request.getSession(true).getId();
>
> // call the ManageableImageCaptchaService methods
> byte[] captchaChallengeAsJpeg = null;
> ByteArrayOutputStream jpegOutputStream = new ByteArrayOutputStream();
> try {
> ImageCaptchaService srv = App.getCaptchaService();
> BufferedImage challenge =
>srv.getImageChallengeForID(captchaID, request.getLocale());
> Object challengeString = srv.getQuestionForID(captchaID,
>request.getLocale());
> // the output stream to render the captcha image as jpeg into
>
> // a jpeg encoder
> JPEGImageEncoder jpegEncoder =
>JPEGCodec.createJPEGEncoder(jpegOutputStream);
> jpegEncoder.encode(challenge);
> } catch (IllegalArgumentException e) {
> // log a security warning and return a 404...
>// if (log.isWarnEnabled())
>// {
>// log.warn(
>// "There was a try from "
>// + request.getRemoteAddr()
>// + " to render an URL without ID"
>// + " or with a too long one");
>// theResponse.sendError(HttpServletResponse.SC_NOT_FOUND);
> return;
>// }
> } catch (CaptchaServiceException e) {
> // log and return a 404 instead of an image...
>// log.warn(
>// "Error trying to generate a captcha and "
>// + "render its challenge as JPEG",
>// e);
> response.sendError(HttpServletResponse.SC_NOT_FOUND);
> return;
> }
>
> captchaChallengeAsJpeg = jpegOutputStream.toByteArray();
>
> // render the captcha challenge as a JPEG image in the response
> response.setHeader("Cache-Control", "no-store");
> response.setHeader("Pragma", "no-cache");
> response.setDateHeader("Expires", 0);
>
> response.setContentType("image/jpeg");
> ServletOutputStream responseOutputStream =
> response.getOutputStream();
> responseOutputStream.write(captchaChallengeAsJpeg);
> }
>
>
>}
>
>------------
>private static ImageCaptchaService captchaService;
> private static Object captchaGuard = new Object();
>
> public static ImageCaptchaService getCaptchaService() {
> synchronized (captchaGuard) {
> if (captchaService == null) {
> captchaService = new EhcacheManageableImageCaptchaService(
>new SimpleListImageCaptchaEngine() , 180, 100000){
>
> };
> }
> return captchaService;
> }
> }
>
>----------------------
>
>
>
>Validation
>
>@InjectObject( "service:tapestry.globals.HttpServletRequest")
> public abstract HttpServletRequest getHttpRequest();
>
>............
>if( App.getCaptchaService().validateResponseForID(
>getHttpRequest().getSession(true).getId(), getCaptchaAnswer() )){
> System.out.println("CAPTCHA - Pass");
> }else{
>
>
>
>Oscar Picasso <os...@yahoo.com> wrote: Do you have a code
>example of such an ImageCaptchaServlet?
>
>Daniel Lydiard wrote: I'm using Jcaptcha with my tapestry application.
>
>1. Load the ImageCaptchaServlet in your web.xml.
>
>
>jcaptcha
>
>com.foo.ImageCaptchaServlet
>
>1
>
>
>
>
>
>
>jcaptcha
>
>/jcaptcha
>
>
>
>
>2. Do something like this in a component class method to get the captcha
>question.
>captchaId = getPage().getRequest().getSession(true).getId();
>return CaptchaServiceSingleton.getInstance().getQuestionForID(captchaId);
>
>3. Point to the servlet for the captchaimage in your component .
>
>4. To validate the user response
>captchaId = getRequest().getSession(true).getId();
>
>return
>CaptchaServiceSingleton.getInstance().validateResponseForID(captchaId,
>userResponse);
>
>
>Hope this helps.
>
>
>----- Original Message -----
>From: "Oscar Picasso"
>To: "Tapestry users"
>Sent: Sunday, April 16, 2006 11:47 AM
>Subject: Re: Looking for a CATCHPA
>
>
>>I have taken a look. But I have no idea where to start. The api
>>javadoc has
>>only one class: JCaptchaCommentAuthenticator. It seems there is a
>>problem
>>with the site.
>>
>> Have you worked with JCaptcha? And do you know where to start?
>>
>> Oscar
>>
>>
>>
>> J�r�me BERNARD wrote: Have a loot at
>> http://jcaptcha.sourceforge.net/
>>
>> Regards,
>> J�r�me.
>>
>> On 4/16/06, Oscar Picasso wrote:
>>> Hi,
>>>
>>> I'm looking for a CATCHPA library to use with my Tapestry application.
>>> I'm looking for something easy to use and efficient.
>>>
>>> I welcome any advice.
>>>
>>> Oscar
>>>
>>>
>>> ---------------------------------
>>> Blab-away for as little as 1�/min. Make PC-to-Phone Calls
>>>using Yahoo!
>>> Messenger with Voice.
>>>
>>
>>
>> --
>> J�r�me BERNARD,
>> Kalixia, SARL.
>> http://weblog.kalixia.com
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: tapestry-user-unsubscribe@jakarta.apache.org
>> For additional commands, e-mail: tapestry-user-help@jakarta.apache.org
>>
>>
>>
>>
>> ---------------------------------
>> Yahoo! Messenger with Voice. PC-to-Phone calls for ridiculously
>>low rates.
>
>---------------------------------------------------------------------
>To unsubscribe, e-mail: tapestry-user-unsubscribe@jakarta.apache.org
>For additional commands, e-mail: tapestry-user-help@jakarta.apache.org
>
>
>
>__________________________________________________
>Do You Yahoo!?
>Tired of spam? Yahoo! Mail has the best spam protection around
>http://mail.yahoo.com
>
>
>Konstantin Ignatyev
>
>
>
>
>PS: If this is a typical day on planet earth, humans will add
>fifteen million tons of carbon to the atmosphere, destroy 115 square
>miles of tropical rainforest, create seventy-two miles of desert,
>eliminate between forty to one hundred species, erode seventy-one
>million tons of topsoil, add 2,700 tons of CFCs to the stratosphere,
>and increase their population by 263,000
>
>Bowers, C.A. The Culture of Denial: Why the Environmental Movement
>Needs a Strategy for Reforming Universities and Public Schools. New
>York: State University of New York Press, 1997: (4) (5) (p.206)
>--0-1251190441-1145242250=:93503--
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Re: Looking for a CATCHPA
Posted by Konstantin Ignatyev <kg...@yahoo.com>.
Just did the following and it seems to work beautifully
public class JCaptchaServlet extends HttpServlet {
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
String captchaID = request.getSession(true).getId();
// call the ManageableImageCaptchaService methods
byte[] captchaChallengeAsJpeg = null;
ByteArrayOutputStream jpegOutputStream = new ByteArrayOutputStream();
try {
ImageCaptchaService srv = App.getCaptchaService();
BufferedImage challenge = srv.getImageChallengeForID(captchaID, request.getLocale());
Object challengeString = srv.getQuestionForID(captchaID, request.getLocale());
// the output stream to render the captcha image as jpeg into
// a jpeg encoder
JPEGImageEncoder jpegEncoder = JPEGCodec.createJPEGEncoder(jpegOutputStream);
jpegEncoder.encode(challenge);
} catch (IllegalArgumentException e) {
// log a security warning and return a 404...
// if (log.isWarnEnabled())
// {
// log.warn(
// "There was a try from "
// + request.getRemoteAddr()
// + " to render an URL without ID"
// + " or with a too long one");
// theResponse.sendError(HttpServletResponse.SC_NOT_FOUND);
return;
// }
} catch (CaptchaServiceException e) {
// log and return a 404 instead of an image...
// log.warn(
// "Error trying to generate a captcha and "
// + "render its challenge as JPEG",
// e);
response.sendError(HttpServletResponse.SC_NOT_FOUND);
return;
}
captchaChallengeAsJpeg = jpegOutputStream.toByteArray();
// render the captcha challenge as a JPEG image in the response
response.setHeader("Cache-Control", "no-store");
response.setHeader("Pragma", "no-cache");
response.setDateHeader("Expires", 0);
response.setContentType("image/jpeg");
ServletOutputStream responseOutputStream =
response.getOutputStream();
responseOutputStream.write(captchaChallengeAsJpeg);
}
}
------------
private static ImageCaptchaService captchaService;
private static Object captchaGuard = new Object();
public static ImageCaptchaService getCaptchaService() {
synchronized (captchaGuard) {
if (captchaService == null) {
captchaService = new EhcacheManageableImageCaptchaService( new SimpleListImageCaptchaEngine() , 180, 100000){
};
}
return captchaService;
}
}
----------------------
Validation
@InjectObject( "service:tapestry.globals.HttpServletRequest")
public abstract HttpServletRequest getHttpRequest();
............
if( App.getCaptchaService().validateResponseForID( getHttpRequest().getSession(true).getId(), getCaptchaAnswer() )){
System.out.println("CAPTCHA - Pass");
}else{
Oscar Picasso <os...@yahoo.com> wrote: Do you have a code example of such an ImageCaptchaServlet?
Daniel Lydiard wrote: I'm using Jcaptcha with my tapestry application.
1. Load the ImageCaptchaServlet in your web.xml.
jcaptcha
com.foo.ImageCaptchaServlet
1
jcaptcha
/jcaptcha
2. Do something like this in a component class method to get the captcha
question.
captchaId = getPage().getRequest().getSession(true).getId();
return CaptchaServiceSingleton.getInstance().getQuestionForID(captchaId);
3. Point to the servlet for the captchaimage in your component .
4. To validate the user response
captchaId = getRequest().getSession(true).getId();
return
CaptchaServiceSingleton.getInstance().validateResponseForID(captchaId,
userResponse);
Hope this helps.
----- Original Message -----
From: "Oscar Picasso"
To: "Tapestry users"
Sent: Sunday, April 16, 2006 11:47 AM
Subject: Re: Looking for a CATCHPA
>I have taken a look. But I have no idea where to start. The api javadoc has
>only one class: JCaptchaCommentAuthenticator. It seems there is a problem
>with the site.
>
> Have you worked with JCaptcha? And do you know where to start?
>
> Oscar
>
>
>
> J�r�me BERNARD wrote: Have a loot at
> http://jcaptcha.sourceforge.net/
>
> Regards,
> J�r�me.
>
> On 4/16/06, Oscar Picasso wrote:
>> Hi,
>>
>> I'm looking for a CATCHPA library to use with my Tapestry application.
>> I'm looking for something easy to use and efficient.
>>
>> I welcome any advice.
>>
>> Oscar
>>
>>
>> ---------------------------------
>> Blab-away for as little as 1�/min. Make PC-to-Phone Calls using Yahoo!
>> Messenger with Voice.
>>
>
>
> --
> J�r�me BERNARD,
> Kalixia, SARL.
> http://weblog.kalixia.com
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: tapestry-user-unsubscribe@jakarta.apache.org
> For additional commands, e-mail: tapestry-user-help@jakarta.apache.org
>
>
>
>
> ---------------------------------
> Yahoo! Messenger with Voice. PC-to-Phone calls for ridiculously low rates.
---------------------------------------------------------------------
To unsubscribe, e-mail: tapestry-user-unsubscribe@jakarta.apache.org
For additional commands, e-mail: tapestry-user-help@jakarta.apache.org
__________________________________________________
Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around
http://mail.yahoo.com
Konstantin Ignatyev
PS: If this is a typical day on planet earth, humans will add fifteen million tons of carbon to the atmosphere, destroy 115 square miles of tropical rainforest, create seventy-two miles of desert, eliminate between forty to one hundred species, erode seventy-one million tons of topsoil, add 2,700 tons of CFCs to the stratosphere, and increase their population by 263,000
Bowers, C.A. The Culture of Denial: Why the Environmental Movement Needs a Strategy for Reforming Universities and Public Schools. New York: State University of New York Press, 1997: (4) (5) (p.206)
Re: Looking for a CATCHPA
Posted by Oscar Picasso <os...@yahoo.com>.
Do you have a code example of such an ImageCaptchaServlet?
Daniel Lydiard <dl...@hotmail.com> wrote: I'm using Jcaptcha with my tapestry application.
1. Load the ImageCaptchaServlet in your web.xml.
jcaptcha
com.foo.ImageCaptchaServlet
1
jcaptcha
/jcaptcha
2. Do something like this in a component class method to get the captcha
question.
captchaId = getPage().getRequest().getSession(true).getId();
return CaptchaServiceSingleton.getInstance().getQuestionForID(captchaId);
3. Point to the servlet for the captchaimage in your component .
4. To validate the user response
captchaId = getRequest().getSession(true).getId();
return
CaptchaServiceSingleton.getInstance().validateResponseForID(captchaId,
userResponse);
Hope this helps.
----- Original Message -----
From: "Oscar Picasso"
To: "Tapestry users"
Sent: Sunday, April 16, 2006 11:47 AM
Subject: Re: Looking for a CATCHPA
>I have taken a look. But I have no idea where to start. The api javadoc has
>only one class: JCaptchaCommentAuthenticator. It seems there is a problem
>with the site.
>
> Have you worked with JCaptcha? And do you know where to start?
>
> Oscar
>
>
>
> J�r�me BERNARD wrote: Have a loot at
> http://jcaptcha.sourceforge.net/
>
> Regards,
> J�r�me.
>
> On 4/16/06, Oscar Picasso wrote:
>> Hi,
>>
>> I'm looking for a CATCHPA library to use with my Tapestry application.
>> I'm looking for something easy to use and efficient.
>>
>> I welcome any advice.
>>
>> Oscar
>>
>>
>> ---------------------------------
>> Blab-away for as little as 1�/min. Make PC-to-Phone Calls using Yahoo!
>> Messenger with Voice.
>>
>
>
> --
> J�r�me BERNARD,
> Kalixia, SARL.
> http://weblog.kalixia.com
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: tapestry-user-unsubscribe@jakarta.apache.org
> For additional commands, e-mail: tapestry-user-help@jakarta.apache.org
>
>
>
>
> ---------------------------------
> Yahoo! Messenger with Voice. PC-to-Phone calls for ridiculously low rates.
---------------------------------------------------------------------
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For additional commands, e-mail: tapestry-user-help@jakarta.apache.org
__________________________________________________
Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around
http://mail.yahoo.com
Re: Looking for a CATCHPA
Posted by Daniel Lydiard <dl...@hotmail.com>.
I'm using Jcaptcha with my tapestry application.
1. Load the ImageCaptchaServlet in your web.xml.
<servlet>
<servlet-name>jcaptcha</servlet-name>
<servlet-class>com.foo.ImageCaptchaServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>jcaptcha</servlet-name>
<url-pattern>/jcaptcha</url-pattern>
</servlet-mapping>
2. Do something like this in a component class method to get the captcha
question.
captchaId = getPage().getRequest().getSession(true).getId();
return CaptchaServiceSingleton.getInstance().getQuestionForID(captchaId);
3. Point to the servlet for the captchaimage in your component .
4. To validate the user response
captchaId = getRequest().getSession(true).getId();
return
CaptchaServiceSingleton.getInstance().validateResponseForID(captchaId,
userResponse);
Hope this helps.
----- Original Message -----
From: "Oscar Picasso" <os...@yahoo.com>
To: "Tapestry users" <ta...@jakarta.apache.org>
Sent: Sunday, April 16, 2006 11:47 AM
Subject: Re: Looking for a CATCHPA
>I have taken a look. But I have no idea where to start. The api javadoc has
>only one class: JCaptchaCommentAuthenticator. It seems there is a problem
>with the site.
>
> Have you worked with JCaptcha? And do you know where to start?
>
> Oscar
>
>
>
> J�r�me BERNARD <je...@gmail.com> wrote: Have a loot at
> http://jcaptcha.sourceforge.net/
>
> Regards,
> J�r�me.
>
> On 4/16/06, Oscar Picasso wrote:
>> Hi,
>>
>> I'm looking for a CATCHPA library to use with my Tapestry application.
>> I'm looking for something easy to use and efficient.
>>
>> I welcome any advice.
>>
>> Oscar
>>
>>
>> ---------------------------------
>> Blab-away for as little as 1�/min. Make PC-to-Phone Calls using Yahoo!
>> Messenger with Voice.
>>
>
>
> --
> J�r�me BERNARD,
> Kalixia, SARL.
> http://weblog.kalixia.com
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: tapestry-user-unsubscribe@jakarta.apache.org
> For additional commands, e-mail: tapestry-user-help@jakarta.apache.org
>
>
>
>
> ---------------------------------
> Yahoo! Messenger with Voice. PC-to-Phone calls for ridiculously low rates.
---------------------------------------------------------------------
To unsubscribe, e-mail: tapestry-user-unsubscribe@jakarta.apache.org
For additional commands, e-mail: tapestry-user-help@jakarta.apache.org
Re: Looking for a CATCHPA
Posted by Oscar Picasso <os...@yahoo.com>.
I have taken a look. But I have no idea where to start. The api javadoc has only one class: JCaptchaCommentAuthenticator. It seems there is a problem with the site.
Have you worked with JCaptcha? And do you know where to start?
Oscar
J�r�me BERNARD <je...@gmail.com> wrote: Have a loot at http://jcaptcha.sourceforge.net/
Regards,
J�r�me.
On 4/16/06, Oscar Picasso wrote:
> Hi,
>
> I'm looking for a CATCHPA library to use with my Tapestry application. I'm looking for something easy to use and efficient.
>
> I welcome any advice.
>
> Oscar
>
>
> ---------------------------------
> Blab-away for as little as 1�/min. Make PC-to-Phone Calls using Yahoo! Messenger with Voice.
>
--
J�r�me BERNARD,
Kalixia, SARL.
http://weblog.kalixia.com
---------------------------------------------------------------------
To unsubscribe, e-mail: tapestry-user-unsubscribe@jakarta.apache.org
For additional commands, e-mail: tapestry-user-help@jakarta.apache.org
---------------------------------
Yahoo! Messenger with Voice. PC-to-Phone calls for ridiculously low rates.
Re: Looking for a CATCHPA
Posted by Jérôme BERNARD <je...@gmail.com>.
Have a loot at http://jcaptcha.sourceforge.net/
Regards,
Jérôme.
On 4/16/06, Oscar Picasso <os...@yahoo.com> wrote:
> Hi,
>
> I'm looking for a CATCHPA library to use with my Tapestry application. I'm looking for something easy to use and efficient.
>
> I welcome any advice.
>
> Oscar
>
>
> ---------------------------------
> Blab-away for as little as 1¢/min. Make PC-to-Phone Calls using Yahoo! Messenger with Voice.
>
--
Jérôme BERNARD,
Kalixia, SARL.
http://weblog.kalixia.com
---------------------------------------------------------------------
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Re: Looking for a CATCHPA
Posted by Oscar Picasso <os...@yahoo.com>.
I can wait until the weekend. Thanks.
spamsucks <sp...@rhoderunner.com> wrote: I was actually working on implementing catchpa into stitches. I have
already got a servlet-filter based implementation (
http://www.rhoderunner.com/longrequest/liveperson/ ) , and will be
porting it to tapestry.
Let me know if you are able to wait until the weekend for a new release.
Oscar Picasso wrote:
>Hi,
>
>I'm looking for a CATCHPA library to use with my Tapestry application. I'm looking for something easy to use and efficient.
>
>I welcome any advice.
>
>Oscar
>
>
>---------------------------------
>Blab-away for as little as 1�/min. Make PC-to-Phone Calls using Yahoo! Messenger with Voice.
>
>
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__________________________________________________
Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around
http://mail.yahoo.com
Re: Looking for a CATCHPA
Posted by spamsucks <sp...@rhoderunner.com>.
I was actually working on implementing catchpa into stitches. I have
already got a servlet-filter based implementation (
http://www.rhoderunner.com/longrequest/liveperson/ ) , and will be
porting it to tapestry.
Let me know if you are able to wait until the weekend for a new release.
Oscar Picasso wrote:
>Hi,
>
>I'm looking for a CATCHPA library to use with my Tapestry application. I'm looking for something easy to use and efficient.
>
>I welcome any advice.
>
>Oscar
>
>
>---------------------------------
>Blab-away for as little as 1¢/min. Make PC-to-Phone Calls using Yahoo! Messenger with Voice.
>
>
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