Re: [webkit-dev] Changing the implementation of KURL

2012-01-28 Thread Adam Barth
On Fri, Jan 27, 2012 at 9:44 PM, Darin Fisher da...@chromium.org wrote:
 On Fri, Jan 27, 2012 at 2:39 AM, Adam Barth aba...@webkit.org wrote:
 On Fri, Jan 27, 2012 at 1:49 AM, Maciej Stachowiak m...@apple.com wrote:
  That said, this plan was based on the premise that Chromium folks were
  willing to cooperate with the unforking effort, and would be happy to
  use a
  WebKit-integrated URL library based on GoogleURL. If that is no longer
  the
  case, then certainly we should not proceed on a false premise.

 I've been talking a bit with Benjamin about this topic off-list.  I'm
 hopeful that with some careful attention to dependencies and
 interfaces, Chromium will be able to use WTFURL in place of GoogleURL.

 I still think it is a bit backwards for Chromium's network stack to depend
 on WebKit,
 but I remain open minded about this.  I'm curious how it will work out.

The general approach I had in mind was to view WTFURL as a separate
library that just happens to be hosted at svn.webkit.org.  That
requires some careful managing of dependencies but it seems worth
trying.

Adam
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Re: [webkit-dev] Changing the implementation of KURL

2012-01-28 Thread Joe Mason
 -Original Message-
 From: webkit-dev-boun...@lists.webkit.org [mailto:webkit-dev-
 boun...@lists.webkit.org] On Behalf Of Adam Barth
 Sent: Saturday, January 28, 2012 3:20 AM
 To: Darin Fisher
 Cc: Benjamin Poulain; WebKit Development
 Subject: Re: [webkit-dev] Changing the implementation of KURL
 
 The general approach I had in mind was to view WTFURL as a separate
 library that just happens to be hosted at svn.webkit.org.  That
 requires some careful managing of dependencies but it seems worth
 trying.

It would be handy if WTF as a whole could be used as a platform utility 
library.  WTF::String in particular to stop string classes from multiplying: if 
the platform's network stack return headers as C strings, and you want to do 
some munging before passing them to WebKit, you can avoid data copies by 
converting them to WTF::String as soon as possible, rather than converting from 
C strings to (say) std::string and then again to WTF::String on entering webkit.

While we're talking about hosting utility libraries that only some ports would 
use, it would be REALLY handy to have One True Cookie Parser, since right now 
WebKit leaves it to the network stack, and there are so many stacks that have 
substandard or non-existant cookie parsers that need to be reimplemented.

Joe

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Re: [webkit-dev] Changing the implementation of KURL

2012-01-28 Thread Brett Wilson
On Sat, Jan 28, 2012 at 12:19 AM, Adam Barth aba...@webkit.org wrote:
 On Fri, Jan 27, 2012 at 9:44 PM, Darin Fisher da...@chromium.org wrote:
 On Fri, Jan 27, 2012 at 2:39 AM, Adam Barth aba...@webkit.org wrote:
 On Fri, Jan 27, 2012 at 1:49 AM, Maciej Stachowiak m...@apple.com wrote:
  That said, this plan was based on the premise that Chromium folks were
  willing to cooperate with the unforking effort, and would be happy to
  use a
  WebKit-integrated URL library based on GoogleURL. If that is no longer
  the
  case, then certainly we should not proceed on a false premise.

 I've been talking a bit with Benjamin about this topic off-list.  I'm
 hopeful that with some careful attention to dependencies and
 interfaces, Chromium will be able to use WTFURL in place of GoogleURL.

 I still think it is a bit backwards for Chromium's network stack to depend
 on WebKit,
 but I remain open minded about this.  I'm curious how it will work out.

 The general approach I had in mind was to view WTFURL as a separate
 library that just happens to be hosted at svn.webkit.org.  That
 requires some careful managing of dependencies but it seems worth
 trying.

I don't really want to reopen this debate, but how is that different
than checking GoogleURL into webkit? Maciej was saying that this would
impose an unacceptable burden on WebKit developers. I'm wondering what
his specific complaints about burden are and whether they might also
apply to a standalone WTFURL class.

For example, if Maciej is concerned about coding style, we can easily
fix that either way and it's a non-issue. If the concern is
familiarity, I'm not sure I see the difference between Adam
reimplementing WTFURL and using some existing code since they're
both new code from the perspective of average WebKit contributors.

I'm asking because I suspect Maciej's main concern is control over the
library and dependencies and the ability to easily make changes
necessary for Apple and WebKit (I would be worried about this, too).
From my perspective, however, this might imply that he would want the
ability in the future to make modifications and add dependencies that
would be nonstarters with respect to Chromium's requirements. The
normal answer (which I agree with) when some random port wants to do
something weird and be able to compile without, for example,
JavaScript, is that WebKit doesn't support these one-off use cases,
take the whole thing and we should agree that this reasoning wouldn't
apply to dependencies on the URL component.

I think there was some agreement last year when the first part of this
project happened. If we restart it, I would want to again make sure
that everybody really understands what our dependency requirements are
and agree that we're not going to be changing them because it's better
for the WebKit community (c.f. Joe Mason's request to use all of
WTF). I also worry that this will be a 9 month project for Adam, as
the current partially done parsing thing took longer than anybody
would have liked. Personally I would prefer Adam spend time fixing my
security bugs :) So I want to be explicit on what Apple perceives as
the benefit of Adam writes a bunch of new well-tested code with no
dependencies vs. copy existing well-tested code with no dependencies
into third_party and possibly reformat so we can make sure there are
no surprises later.

That said, I am quite supportive of you unification work for the
benefit of WebKit!

Brett
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Re: [webkit-dev] Changing the implementation of KURL

2012-01-28 Thread Maciej Stachowiak

On Jan 28, 2012, at 9:24 AM, Brett Wilson wrote:

 On Sat, Jan 28, 2012 at 12:19 AM, Adam Barth aba...@webkit.org wrote:
 On Fri, Jan 27, 2012 at 9:44 PM, Darin Fisher da...@chromium.org wrote:
 On Fri, Jan 27, 2012 at 2:39 AM, Adam Barth aba...@webkit.org wrote:
 On Fri, Jan 27, 2012 at 1:49 AM, Maciej Stachowiak m...@apple.com wrote:
 That said, this plan was based on the premise that Chromium folks were
 willing to cooperate with the unforking effort, and would be happy to
 use a
 WebKit-integrated URL library based on GoogleURL. If that is no longer
 the
 case, then certainly we should not proceed on a false premise.
 
 I've been talking a bit with Benjamin about this topic off-list.  I'm
 hopeful that with some careful attention to dependencies and
 interfaces, Chromium will be able to use WTFURL in place of GoogleURL.
 
 I still think it is a bit backwards for Chromium's network stack to depend
 on WebKit,
 but I remain open minded about this.  I'm curious how it will work out.
 
 The general approach I had in mind was to view WTFURL as a separate
 library that just happens to be hosted at svn.webkit.org.  That
 requires some careful managing of dependencies but it seems worth
 trying.
 
 I don't really want to reopen this debate, but how is that different
 than checking GoogleURL into webkit? Maciej was saying that this would
 impose an unacceptable burden on WebKit developers. I'm wondering what
 his specific complaints about burden are and whether they might also
 apply to a standalone WTFURL class.
 
 For example, if Maciej is concerned about coding style, we can easily
 fix that either way and it's a non-issue. If the concern is
 familiarity, I'm not sure I see the difference between Adam
 reimplementing WTFURL and using some existing code since they're
 both new code from the perspective of average WebKit contributors.

I don't think anyone is expecting to implement new URL code from scratch. The 
proposals that were put forward are, as I understand them:

(1) Check in GoogleURL as-is into the ThirdParty directory as an external 
dependency; future maintenance would be done via the canonical GoogleURL 
repository.
(2) Check in GoogleURL as a proper part of WebKit, adapting its coding style 
and wrapping it in a way that works well with other WebKit/WTF data types.

The issue is not new code or not, but the ability to maintain it going forward.

 I'm asking because I suspect Maciej's main concern is control over the
 library and dependencies and the ability to easily make changes
 necessary for Apple and WebKit (I would be worried about this, too).

That's exactly it.

 From my perspective, however, this might imply that he would want the
 ability in the future to make modifications and add dependencies that
 would be nonstarters with respect to Chromium's requirements. The
 normal answer (which I agree with) when some random port wants to do
 something weird and be able to compile without, for example,
 JavaScript, is that WebKit doesn't support these one-off use cases,
 take the whole thing and we should agree that this reasoning wouldn't
 apply to dependencies on the URL component.
 
 I think there was some agreement last year when the first part of this
 project happened. If we restart it, I would want to again make sure
 that everybody really understands what our dependency requirements are
 and agree that we're not going to be changing them because it's better
 for the WebKit community (c.f. Joe Mason's request to use all of
 WTF). I also worry that this will be a 9 month project for Adam, as
 the current partially done parsing thing took longer than anybody
 would have liked. Personally I would prefer Adam spend time fixing my
 security bugs :) So I want to be explicit on what Apple perceives as
 the benefit of Adam writes a bunch of new well-tested code with no
 dependencies vs. copy existing well-tested code with no dependencies
 into third_party and possibly reformat so we can make sure there are
 no surprises later.

I think that, at this point, Benjamin is volunteering to do the bulk of work 
and Adam is offering to help. The code would be more along the lines of 
reformatting and refactoring than write[ing] a bunch of new code as I 
understand it.

I understand your concern about wanting to keept his code free of unwanted 
dependencies. However, we do already have a pretty hard boundary that WTF can't 
depend on anything higher in the stack. We could make WTFURL even more 
restricted if that was necessary or helpful. However, I think most of us who do 
not work on Chromium are not clear on what exactly the dependency constraints 
are. It would be helpful if you or Adam or someone else could document them. 

Let's take some specific examples. Would using WTF::Vector inside the 
implementation (not necessarily at the API boundary, just internally) be 
acceptable? Or would it be required to use C arrays or std::vector? Would using 
WTF's ASSERT family of macros be acceptable, or 

Re: [webkit-dev] Changing the implementation of KURL

2012-01-28 Thread Brett Wilson
On Sat, Jan 28, 2012 at 4:07 PM, Maciej Stachowiak m...@apple.com wrote:

 On Jan 28, 2012, at 9:24 AM, Brett Wilson wrote:

 On Sat, Jan 28, 2012 at 12:19 AM, Adam Barth aba...@webkit.org wrote:
 On Fri, Jan 27, 2012 at 9:44 PM, Darin Fisher da...@chromium.org wrote:
 On Fri, Jan 27, 2012 at 2:39 AM, Adam Barth aba...@webkit.org wrote:
 On Fri, Jan 27, 2012 at 1:49 AM, Maciej Stachowiak m...@apple.com wrote:
 That said, this plan was based on the premise that Chromium folks were
 willing to cooperate with the unforking effort, and would be happy to
 use a
 WebKit-integrated URL library based on GoogleURL. If that is no longer
 the
 case, then certainly we should not proceed on a false premise.

 I've been talking a bit with Benjamin about this topic off-list.  I'm
 hopeful that with some careful attention to dependencies and
 interfaces, Chromium will be able to use WTFURL in place of GoogleURL.

 I still think it is a bit backwards for Chromium's network stack to depend
 on WebKit,
 but I remain open minded about this.  I'm curious how it will work out.

 The general approach I had in mind was to view WTFURL as a separate
 library that just happens to be hosted at svn.webkit.org.  That
 requires some careful managing of dependencies but it seems worth
 trying.

 I don't really want to reopen this debate, but how is that different
 than checking GoogleURL into webkit? Maciej was saying that this would
 impose an unacceptable burden on WebKit developers. I'm wondering what
 his specific complaints about burden are and whether they might also
 apply to a standalone WTFURL class.

 For example, if Maciej is concerned about coding style, we can easily
 fix that either way and it's a non-issue. If the concern is
 familiarity, I'm not sure I see the difference between Adam
 reimplementing WTFURL and using some existing code since they're
 both new code from the perspective of average WebKit contributors.

 I don't think anyone is expecting to implement new URL code from scratch. The 
 proposals that were put forward are, as I understand them:

 (1) Check in GoogleURL as-is into the ThirdParty directory as an external 
 dependency; future maintenance would be done via the canonical GoogleURL 
 repository.
 (2) Check in GoogleURL as a proper part of WebKit, adapting its coding style 
 and wrapping it in a way that works well with other WebKit/WTF data types.

 The issue is not new code or not, but the ability to maintain it going 
 forward.

That's great, thanks.

 I'm asking because I suspect Maciej's main concern is control over the
 library and dependencies and the ability to easily make changes
 necessary for Apple and WebKit (I would be worried about this, too).

 That's exactly it.

 From my perspective, however, this might imply that he would want the
 ability in the future to make modifications and add dependencies that
 would be nonstarters with respect to Chromium's requirements. The
 normal answer (which I agree with) when some random port wants to do
 something weird and be able to compile without, for example,
 JavaScript, is that WebKit doesn't support these one-off use cases,
 take the whole thing and we should agree that this reasoning wouldn't
 apply to dependencies on the URL component.

 I think there was some agreement last year when the first part of this
 project happened. If we restart it, I would want to again make sure
 that everybody really understands what our dependency requirements are
 and agree that we're not going to be changing them because it's better
 for the WebKit community (c.f. Joe Mason's request to use all of
 WTF). I also worry that this will be a 9 month project for Adam, as
 the current partially done parsing thing took longer than anybody
 would have liked. Personally I would prefer Adam spend time fixing my
 security bugs :) So I want to be explicit on what Apple perceives as
 the benefit of Adam writes a bunch of new well-tested code with no
 dependencies vs. copy existing well-tested code with no dependencies
 into third_party and possibly reformat so we can make sure there are
 no surprises later.

 I think that, at this point, Benjamin is volunteering to do the bulk of work 
 and Adam is offering to help. The code would be more along the lines of 
 reformatting and refactoring than write[ing] a bunch of new code as I 
 understand it.

 I understand your concern about wanting to keept his code free of unwanted 
 dependencies. However, we do already have a pretty hard boundary that WTF 
 can't depend on anything higher in the stack. We could make WTFURL even more 
 restricted if that was necessary or helpful. However, I think most of us who 
 do not work on Chromium are not clear on what exactly the dependency 
 constraints are. It would be helpful if you or Adam or someone else could 
 document them.

 Let's take some specific examples. Would using WTF::Vector inside the 
 implementation (not necessarily at the API boundary, just internally) be 
 acceptable? Or 

Re: [webkit-dev] Changing the implementation of KURL

2012-01-28 Thread Brett Wilson
On Sat, Jan 28, 2012 at 4:48 PM, Brett Wilson bre...@chromium.org wrote:
 On Sat, Jan 28, 2012 at 4:07 PM, Maciej Stachowiak m...@apple.com wrote:

 On Jan 28, 2012, at 9:24 AM, Brett Wilson wrote:

 On Sat, Jan 28, 2012 at 12:19 AM, Adam Barth aba...@webkit.org wrote:
 On Fri, Jan 27, 2012 at 9:44 PM, Darin Fisher da...@chromium.org wrote:
 On Fri, Jan 27, 2012 at 2:39 AM, Adam Barth aba...@webkit.org wrote:
 On Fri, Jan 27, 2012 at 1:49 AM, Maciej Stachowiak m...@apple.com 
 wrote:
 That said, this plan was based on the premise that Chromium folks were
 willing to cooperate with the unforking effort, and would be happy to
 use a
 WebKit-integrated URL library based on GoogleURL. If that is no longer
 the
 case, then certainly we should not proceed on a false premise.

 I've been talking a bit with Benjamin about this topic off-list.  I'm
 hopeful that with some careful attention to dependencies and
 interfaces, Chromium will be able to use WTFURL in place of GoogleURL.

 I still think it is a bit backwards for Chromium's network stack to depend
 on WebKit,
 but I remain open minded about this.  I'm curious how it will work out.

 The general approach I had in mind was to view WTFURL as a separate
 library that just happens to be hosted at svn.webkit.org.  That
 requires some careful managing of dependencies but it seems worth
 trying.

 I don't really want to reopen this debate, but how is that different
 than checking GoogleURL into webkit? Maciej was saying that this would
 impose an unacceptable burden on WebKit developers. I'm wondering what
 his specific complaints about burden are and whether they might also
 apply to a standalone WTFURL class.

 For example, if Maciej is concerned about coding style, we can easily
 fix that either way and it's a non-issue. If the concern is
 familiarity, I'm not sure I see the difference between Adam
 reimplementing WTFURL and using some existing code since they're
 both new code from the perspective of average WebKit contributors.

 I don't think anyone is expecting to implement new URL code from scratch. 
 The proposals that were put forward are, as I understand them:

 (1) Check in GoogleURL as-is into the ThirdParty directory as an external 
 dependency; future maintenance would be done via the canonical GoogleURL 
 repository.
 (2) Check in GoogleURL as a proper part of WebKit, adapting its coding style 
 and wrapping it in a way that works well with other WebKit/WTF data types.

 The issue is not new code or not, but the ability to maintain it going 
 forward.

 That's great, thanks.

 I'm asking because I suspect Maciej's main concern is control over the
 library and dependencies and the ability to easily make changes
 necessary for Apple and WebKit (I would be worried about this, too).

 That's exactly it.

 From my perspective, however, this might imply that he would want the
 ability in the future to make modifications and add dependencies that
 would be nonstarters with respect to Chromium's requirements. The
 normal answer (which I agree with) when some random port wants to do
 something weird and be able to compile without, for example,
 JavaScript, is that WebKit doesn't support these one-off use cases,
 take the whole thing and we should agree that this reasoning wouldn't
 apply to dependencies on the URL component.

 I think there was some agreement last year when the first part of this
 project happened. If we restart it, I would want to again make sure
 that everybody really understands what our dependency requirements are
 and agree that we're not going to be changing them because it's better
 for the WebKit community (c.f. Joe Mason's request to use all of
 WTF). I also worry that this will be a 9 month project for Adam, as
 the current partially done parsing thing took longer than anybody
 would have liked. Personally I would prefer Adam spend time fixing my
 security bugs :) So I want to be explicit on what Apple perceives as
 the benefit of Adam writes a bunch of new well-tested code with no
 dependencies vs. copy existing well-tested code with no dependencies
 into third_party and possibly reformat so we can make sure there are
 no surprises later.

 I think that, at this point, Benjamin is volunteering to do the bulk of work 
 and Adam is offering to help. The code would be more along the lines of 
 reformatting and refactoring than write[ing] a bunch of new code as I 
 understand it.

 I understand your concern about wanting to keept his code free of unwanted 
 dependencies. However, we do already have a pretty hard boundary that WTF 
 can't depend on anything higher in the stack. We could make WTFURL even more 
 restricted if that was necessary or helpful. However, I think most of us who 
 do not work on Chromium are not clear on what exactly the dependency 
 constraints are. It would be helpful if you or Adam or someone else could 
 document them.

 Let's take some specific examples. Would using WTF::Vector inside the 
 implementation 

Re: [webkit-dev] Changing the implementation of KURL

2012-01-28 Thread Joe Mason
 -Original Message-
 From: webkit-dev-boun...@lists.webkit.org [mailto:webkit-dev-
 boun...@lists.webkit.org] On Behalf Of Maciej Stachowiak
 Sent: Saturday, January 28, 2012 7:08 PM
 To: Brett Wilson
 Cc: Benjamin Poulain; WebKit Development
 Subject: Re: [webkit-dev] Changing the implementation of KURL
 
 Let's take some specific examples. Would using WTF::Vector inside the
 implementation (not necessarily at the API boundary, just internally)
 be acceptable? Or would it be required to use C arrays or std::vector?
 Would using WTF's ASSERT family of macros be acceptable, or should some
 other form of asserts be used? The are examples I can think of where
 dependencies could simply be added in the course of trying to get the
 code to be in WebKit style.

Another big potential dependency would be use of Platform.h and the 
ENABLE/USE/etc system of macros - I could easily see a new feature including 
special processing for a new URL scheme, similar to the way file: url's have 
slightly different parsing rules than http: urls.  In this case we'd want to 
wrap the special handling in ENABLE(feature).  (Arguably the url class should 
be flexible enough that you don't have to hardcode special handling for a 
scheme, though.)

Joe

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Re: [webkit-dev] Changing the implementation of KURL

2012-01-28 Thread Brett Wilson
On Sat, Jan 28, 2012 at 5:28 PM, Joe Mason jma...@rim.com wrote:
 -Original Message-
 From: webkit-dev-boun...@lists.webkit.org [mailto:webkit-dev-
 boun...@lists.webkit.org] On Behalf Of Maciej Stachowiak
 Sent: Saturday, January 28, 2012 7:08 PM
 To: Brett Wilson
 Cc: Benjamin Poulain; WebKit Development
 Subject: Re: [webkit-dev] Changing the implementation of KURL

 Let's take some specific examples. Would using WTF::Vector inside the
 implementation (not necessarily at the API boundary, just internally)
 be acceptable? Or would it be required to use C arrays or std::vector?
 Would using WTF's ASSERT family of macros be acceptable, or should some
 other form of asserts be used? The are examples I can think of where
 dependencies could simply be added in the course of trying to get the
 code to be in WebKit style.

 Another big potential dependency would be use of Platform.h and the 
 ENABLE/USE/etc system of macros - I could easily see a new feature including 
 special processing for a new URL scheme, similar to the way file: url's have 
 slightly different parsing rules than http: urls.  In this case we'd want to 
 wrap the special handling in ENABLE(feature).  (Arguably the url class should 
 be flexible enough that you don't have to hardcode special handling for a 
 scheme, though.)

I don't see that as being much of an issue. Google Safe Browsing can
always write their own Platform.h that does what they need.

Brett
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Re: [webkit-dev] Changing the implementation of KURL

2012-01-28 Thread Benjamin Poulain
On Sat, Jan 28, 2012 at 4:59 PM, Brett Wilson bre...@chromium.org wrote:
 So to clarify, I think we need to keep the current architecture.
 Obviously WebKit needs a URL class that uses its String class, so
 WTFURL would probably be a wrapper around some core library for WebKit
 to use. Chromium would rewrite our GURL class to use the same core
 library and keep std::strings (we don't want all our browser-level
 code to have to convert std::string - WTF::String just like today we
 don't want to do the inverse in WebKit).

I don't really get this point. With WTF linked statically, no matter
how largish WTF, it will not cost much to use.

You say you don't want to convert std::string-WTF::String and
WTF::String at the browser level, but aren't you doing that a lot more
with the current code?

Parsing valid URL can probably be done without WTF.
URL canonicalization is frequent in WebKit and I would think using
String directly is a good idea. Same for modifying a URL.

Chromium is the only ports that use the same URL Class in the whole
stack. And it seems you do not want any dependencies on WTF. Maybe an
alternative is to change this and convert KURL-GoogleURL on platform
boundaries like the other ports?

Benjamin
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Re: [webkit-dev] Changing the implementation of KURL

2012-01-28 Thread Darin Fisher
The other concern I have is about the stability of the API to the URL
guts that GURL living in the chromium repository would depend on.  Anyone
changing the URL guts would need to be careful not to break that contract.
This seems like it might be annoying for those who do not work on chromium.
On Jan 28, 2012 5:43 PM, Brett Wilson bre...@chromium.org wrote:

 On Sat, Jan 28, 2012 at 5:28 PM, Joe Mason jma...@rim.com wrote:
  -Original Message-
  From: webkit-dev-boun...@lists.webkit.org [mailto:webkit-dev-
  boun...@lists.webkit.org] On Behalf Of Maciej Stachowiak
  Sent: Saturday, January 28, 2012 7:08 PM
  To: Brett Wilson
  Cc: Benjamin Poulain; WebKit Development
  Subject: Re: [webkit-dev] Changing the implementation of KURL
 
  Let's take some specific examples. Would using WTF::Vector inside the
  implementation (not necessarily at the API boundary, just internally)
  be acceptable? Or would it be required to use C arrays or std::vector?
  Would using WTF's ASSERT family of macros be acceptable, or should some
  other form of asserts be used? The are examples I can think of where
  dependencies could simply be added in the course of trying to get the
  code to be in WebKit style.
 
  Another big potential dependency would be use of Platform.h and the
 ENABLE/USE/etc system of macros - I could easily see a new feature
 including special processing for a new URL scheme, similar to the way file:
 url's have slightly different parsing rules than http: urls.  In this case
 we'd want to wrap the special handling in ENABLE(feature).  (Arguably the
 url class should be flexible enough that you don't have to hardcode special
 handling for a scheme, though.)

 I don't see that as being much of an issue. Google Safe Browsing can
 always write their own Platform.h that does what they need.

 Brett
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Re: [webkit-dev] Changing the implementation of KURL

2012-01-28 Thread Adam Barth
On Sat, Jan 28, 2012 at 5:51 PM, Benjamin Poulain benja...@webkit.org wrote:
 On Sat, Jan 28, 2012 at 4:59 PM, Brett Wilson bre...@chromium.org wrote:
 So to clarify, I think we need to keep the current architecture.
 Obviously WebKit needs a URL class that uses its String class, so
 WTFURL would probably be a wrapper around some core library for WebKit
 to use. Chromium would rewrite our GURL class to use the same core
 library and keep std::strings (we don't want all our browser-level
 code to have to convert std::string - WTF::String just like today we
 don't want to do the inverse in WebKit).

 I don't really get this point. With WTF linked statically, no matter
 how largish WTF, it will not cost much to use.

 You say you don't want to convert std::string-WTF::String and
 WTF::String at the browser level, but aren't you doing that a lot more
 with the current code?

 Parsing valid URL can probably be done without WTF.
 URL canonicalization is frequent in WebKit and I would think using
 String directly is a good idea. Same for modifying a URL.

GURL abstracts the underlying storage so that the canonicalized URL is
written directly into the proper type.  As far as I can tell, there
isn't much advantage to WTFURL committing to a particular string type.

 Chromium is the only ports that use the same URL Class in the whole
 stack. And it seems you do not want any dependencies on WTF. Maybe an
 alternative is to change this and convert KURL-GoogleURL on platform
 boundaries like the other ports?

My guess is you won't be able to convince fishd to use different URL
libraries at different layers in Chromium.  There's a long history of
that causing security vulnerabilities, both in Firefox and in Safari.

Adam
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Re: [webkit-dev] Changing the implementation of KURL

2012-01-28 Thread Darin Fisher
On Sat, Jan 28, 2012 at 6:01 PM, Adam Barth aba...@webkit.org wrote:

 On Sat, Jan 28, 2012 at 5:51 PM, Benjamin Poulain benja...@webkit.org
 wrote:
  On Sat, Jan 28, 2012 at 4:59 PM, Brett Wilson bre...@chromium.org
 wrote:
  So to clarify, I think we need to keep the current architecture.
  Obviously WebKit needs a URL class that uses its String class, so
  WTFURL would probably be a wrapper around some core library for WebKit
  to use. Chromium would rewrite our GURL class to use the same core
  library and keep std::strings (we don't want all our browser-level
  code to have to convert std::string - WTF::String just like today we
  don't want to do the inverse in WebKit).
 
  I don't really get this point. With WTF linked statically, no matter
  how largish WTF, it will not cost much to use.
 
  You say you don't want to convert std::string-WTF::String and
  WTF::String at the browser level, but aren't you doing that a lot more
  with the current code?
 
  Parsing valid URL can probably be done without WTF.
  URL canonicalization is frequent in WebKit and I would think using
  String directly is a good idea. Same for modifying a URL.

 GURL abstracts the underlying storage so that the canonicalized URL is
 written directly into the proper type.  As far as I can tell, there
 isn't much advantage to WTFURL committing to a particular string type.

  Chromium is the only ports that use the same URL Class in the whole
  stack. And it seems you do not want any dependencies on WTF. Maybe an
  alternative is to change this and convert KURL-GoogleURL on platform
  boundaries like the other ports?

 My guess is you won't be able to convince fishd to use different URL
 libraries at different layers in Chromium.  There's a long history of
 that causing security vulnerabilities, both in Firefox and in Safari.


Right.  In Firefox, the problem was that the cookie code used some
hand-rolled
string parsing code instead of reusing the URL parsing code.  That resulted
in
a subtle bug that could be exploited to steal cookies.  In Safari's case, I
believe
it was caused by differences between CFNetwork and KURL.

If CFNetwork exposed an API to its URL parser, then it would be super wise
for
any port of WebKit using CFNetwork to reuse the same URL parser.

-Darin
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Re: [webkit-dev] Changing the implementation of KURL

2012-01-28 Thread Benjamin Poulain
On Sat, Jan 28, 2012 at 8:01 PM, Darin Fisher da...@chromium.org wrote:
 If CFNetwork exposed an API to its URL parser, then it would be super wise
 for
 any port of WebKit using CFNetwork to reuse the same URL parser.

That is an interesting idea.

I always considered it would be beneficial to have a single
implementation in order to have a consistent behavior and the same
security/bug fixes. You have a good point, maybe it is in the interest
of the ports to split KURL...

Benjamin
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