Open
Bug 1515831
Opened 6 years ago
Updated 2 years ago
Does CurlUtils.escapeStringPosix handle strings containing code points greater than U+00FF correctly?
Categories
(DevTools :: Netmonitor, enhancement, P3)
DevTools
Netmonitor
Tracking
(Not tracked)
NEW
People
(Reporter: Waldo, Unassigned)
References
(Blocks 1 open bug, )
Details
browser_net_curl-utils.js has a test for CurlUtils.escapeStringPosix that -- prior to bug 1492937 -- passed in the string "æ ø ü ß ö é" expecting a result like "$'\\xc3\\xa6 \\xc3\\xb8 \\xc3\\xbc \\xc3\\x9f \\xc3\\xb6 \\xc3\\xa9'" where each code point above U+00FF was converted to a sequence of hex escapes for the code point's UTF-8 encoding. However, this only *happened* to work because browser_net_curl-utils.js was loaded not as UTF-8, but as Latin-1. So the nice string with various code points in [U+0080, U+00FF] was *really* a string whose elements were the UTF-8 code units. And when bug 1492937 changed things so this script got loaded as UTF-8, the script *also* had to be changed to make that nice string of actual non-ASCII code points be instead be the awful and stupid "\xc3\xa6 \xc3\xb8 \xc3\xbc \xc3\x9f \xc3\xb6 \xc3\xa9" so it would continue to contain as elements the same UTF-8 code unit values. It isn't clear that escapeStringPosix does what it's intended to do, and what the author of this test *probably* thought it was doing. Sometimes it outputs \u-style escapes; other times it outputs \x-style escapes. The \x-escaping is applied to non-ASCII *bytes* as bytes even when they are constituent parts of a UTF-8 code point, but then the bigger-than-byte code points are escaped otherwise. And none of this handles surrogate pairs -- "🚴" spanning two UTF-16 code units is almost certainly not escaped in a sensible manner. It's possible the current code is right, but I doubt it. But someone who actually understands curl, the arguments it takes, and how ANSI-C quoting interacts with both of those should make the call.
Updated•6 years ago
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Priority: -- → P3
Updated•5 years ago
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Blocks: netmonitor-copy
Updated•2 years ago
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Severity: normal → S3
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Description
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