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x/website/internal/web: code examples render with double-escaped HTML #46839

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networkimprov opened this issue Jun 20, 2021 · 2 comments
Closed

x/website/internal/web: code examples render with double-escaped HTML #46839

networkimprov opened this issue Jun 20, 2021 · 2 comments
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FrozenDueToAge NeedsFix The path to resolution is known, but the work has not been done.
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Unreleased

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@networkimprov
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I'm running the latest Firefox & Chrome on Windows.

The HTML for examples are mangled on at least this page:
https://golang.org/pkg/crypto/rsa/#example_DecryptOAEP

For instance:

ciphertext, _ := hex.DecodeString("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")
label := []byte("orders")

<span class="comment">// crypto/rand.Reader is a good source of entropy for blinding the RSA</span>
<span class="comment">// operation.</span>
rng := rand.Reader

plaintext, err := DecryptOAEP(sha256.New(), rng, test2048Key, ciphertext, label)
if err != nil {
    fmt.Fprintf(os.Stderr, &#34;Error from decryption: %s\n&#34;, err)
    return
}

fmt.Printf(&#34;Plaintext: %s\n&#34;, string(plaintext))

<span class="comment">// Remember that encryption only provides confidentiality. The</span>
<span class="comment">// ciphertext should be signed before authenticity is assumed and, even</span>
<span class="comment">// then, consider that messages might be reordered.</span>
@seankhliao seankhliao changed the title godoc: Examples have mangled html x/website: Examples have mangled html Jun 20, 2021
@gopherbot gopherbot added this to the Unreleased milestone Jun 20, 2021
@seankhliao seankhliao added the NeedsFix The path to resolution is known, but the work has not been done. label Jun 20, 2021
@networkimprov
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cc @dmitshur @agnivade

CarsonHoffman added a commit to CarsonHoffman/website that referenced this issue Jul 5, 2021
@CarsonHoffman
internal/web: stop double-escaping of code in non-playground examples
0535352 
4c9e549 introduced an issue causing non-playground
code examples to be double-escaped, causing HTML escape sequences and elements
to appear in the code, such as the examples in crypto/rsa, as reported in golang/go#46839.
This change treats the code as `template.HTML` rather than `string` after running
through (*Page).Node (which formats the code as HTML) and doing some basic transformations,
preventing this double-escaping from occurring.

Fixes golang/go#46839
CarsonHoffman added a commit to CarsonHoffman/website that referenced this issue Jul 5, 2021
@CarsonHoffman
internal/web: stop double-escaping of code in non-playground examples
e5adf7c 
4c9e549 introduced an issue causing non-playground
code examples to be double-escaped, causing HTML escape sequences and elements
to appear in the code, such as the examples in crypto/rsa, as reported in golang/go#46839.
This change treats the code as `template.HTML` rather than `string` after running
through `(*Page).Node` (which formats the code as HTML) and doing some basic transformations,
preventing this double-escaping from occurring.

Fixes golang/go#46839
@CarsonHoffman CarsonHoffman mentioned this issue Jul 5, 2021
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@gopherbot
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Change https://golang.org/cl/332889 mentions this issue: internal/web: stop double-escaping of code in non-playground examples

@dmitshur dmitshur changed the title x/website: Examples have mangled html x/website/internal/web: code examples render with double-escaped HTML Jul 15, 2021
@golang golang locked and limited conversation to collaborators Jul 19, 2022
passionSeven added a commit to passionSeven/website that referenced this issue Oct 18, 2022
@passionSeven
internal/web: stop double-escaping of code in non-playground examples
25b2d47 
CL 317655 introduced an issue causing non-playground code examples
to be double-escaped, causing HTML escape sequences and elements
to appear in the code, such as the examples in crypto/rsa,
as reported in golang/go#46839. This change treats the code as
template.HTML rather than string after running through (*Page).Node
(which formats the code as HTML) and doing some basic transformations,
preventing this double-escaping from occurring.

Fixes golang/go#46839

Change-Id: Id226147eb51219bd5e2db61e959519258e39a298
GitHub-Last-Rev: 81f8dc5e878cd283f7d5865e73d214135838549b
GitHub-Pull-Request: golang/website#73
Reviewed-on: https://go-review.googlesource.com/c/website/+/332889
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
Run-TryBot: Dmitri Shuralyov <dmitshur@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Cherry Mui <cherryyz@google.com>
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internal/web: stop double-escaping of code in non-playground examples CarsonHoffman/website
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@networkimprov @gopherbot @seankhliao