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libidn2 support for IDNA2008+UTS#46 (using ffi) #496

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libidn2 support for IDNA2008+UTS#46 (using ffi) #496

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f77bcf4
libidn2 ffi implementation
jarthod Mar 22, 2023
dfed402
Merge branch 'main' into libidn2
jarthod Apr 11, 2023
0a6f091
Fix gemspec generation
jarthod Apr 11, 2023
a1fb7de
Rename IDNA backend implementations and refactor loading mechanism
jarthod Apr 11, 2023
421cdca
Add Automatic IDNA memory leak detection to CI + keep libidn2 opt-in …
jarthod Apr 11, 2023
84fdb89
Restore exceptions path + various fixes
jarthod Apr 11, 2023
a5e87c6
Add strict mode for IDNA conversion
jarthod Apr 17, 2023
3482be0
Update README.md
jarthod Apr 18, 2023
c63f9ba
Move libidn1 specific exception handling inside the libidn1.rb file a…
jarthod Apr 18, 2023
ccbcb9e
Change IDNA::Error exception to inherit URI::InvalidURIError
jarthod Apr 18, 2023
9eb3910
try with option 2: wrap errors in URI
jarthod Apr 18, 2023
7d75d6c
explicit exception message passing
jarthod Apr 18, 2023
f0b98df
more consistent IDNA handling of wrong input
jarthod Apr 18, 2023
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4 changes: 2 additions & 2 deletions lib/addressable/idna.rb
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Expand Up @@ -32,13 +32,13 @@ class << self

# public interface implemented by all backends
def to_ascii(value)
backend.to_ascii(value)
backend.to_ascii(value) if value.is_a?(String)
rescue Error
strict_mode ? raise : value
end

def to_unicode(value)
backend.to_unicode(value)
backend.to_unicode(value) if value.is_a?(String)
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While doing some tests I noticed behavior was not consistent when passing invalid input between backends, so I normalized this with if value.is_a?(String) and added tests in f0b98df. This case shouldn't happen much unless people manually call Addressable::IDNA but in that case we better protect the code a bit.

libidn2 for example was throwing some invalid memory read at address=0x0000000000000000 when called with nil.

If you prefer for the other types like Integer or Array we can also raise a TypeError.

rescue Error
strict_mode ? raise : value
end
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14 changes: 14 additions & 0 deletions spec/addressable/idna_spec.rb
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Expand Up @@ -152,6 +152,13 @@
"example..host"
)).to eq("example..host")
end

it "handles nil input" do
expect(Addressable::IDNA.to_ascii(nil)).to eq(nil)
expect(Addressable::IDNA.to_ascii(45)).to eq(nil)
expect(Addressable::IDNA.to_ascii([])).to eq(nil)
expect(Addressable::IDNA.to_ascii({})).to eq(nil)
end
end

shared_examples_for "converting from ASCII to unicode" do
Expand Down Expand Up @@ -256,6 +263,13 @@
"example..host"
)).to eq("example..host")
end

it "handles unexpected input as nil" do
expect(Addressable::IDNA.to_unicode(nil)).to eq(nil)
expect(Addressable::IDNA.to_unicode(45)).to eq(nil)
expect(Addressable::IDNA.to_unicode([])).to eq(nil)
expect(Addressable::IDNA.to_unicode({})).to eq(nil)
end
end

describe Addressable::IDNA, "when using the pure-Ruby implementation" do
Expand Down