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mime: be stricter parsing media types #3562

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bradfitz opened this issue Apr 24, 2012 · 5 comments
Closed

mime: be stricter parsing media types #3562

bradfitz opened this issue Apr 24, 2012 · 5 comments
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@bradfitz
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This shouldn't be valid:

http://play.golang.org/p/IQ8GeEmP1_

    t, params, err := mime.ParseMediaType(`image/'><style type="text/css">td{background-color:red}</style>`)   
    fmt.Printf("t=%q, p=%v, err=%v", t, params, err)

        t="image/'><style type=\"text/css\">td{background-color:red}</style>", p=map[], err=mime: unexpected content after media subtype


according to: http://www.ietf.org/rfc/rfc1521.txt
@rsc
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rsc commented Apr 25, 2012

Comment 1:

It's not valid: there's an error returned.

@bradfitz
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Comment 2:

yeah, but it'd still be nice if t and params were zero values when err != nil.  I know
that's not documented, but it's more consistent with how errors normally work, and it's
halfway implied by the docs saying that a non-nil map is returned when err == nil.
Feel free to close if you disagree.

@rsc
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rsc commented Apr 25, 2012

Comment 3:

agreed

@bradfitz
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Comment 4:

This issue was closed by revision 7f7a70f.

Status changed to Fixed.

@rsc
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rsc commented Apr 25, 2012

Comment 5:

This issue was closed by revision b0c2507ec455.

@bradfitz bradfitz self-assigned this Apr 25, 2012
rsc added a commit that referenced this issue May 11, 2015
@rsc
[release-branch.go1] mime: make ParseMediaType return zero results on…
8f2d489 
… error

««« CL 6119051 / 1384d7510575
mime: make ParseMediaType return zero results on error

Fixes #3562

R=golang-dev, adg, rsc
CC=golang-dev
https://golang.org/cl/6119051
»»»

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6127045
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@bradfitz @rsc @gopherbot