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gh-85287: Change codecs to raise precise UnicodeEncodeError and UnicodeDecodeError (#113674)
Co-authored-by: Inada Naoki <songofacandy@gmail.com>
This commit is contained in:
John Sloboda
GitHub
parent
c514a975ab
commit
649857a157
9 changed files with 306 additions and 81 deletions
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@ -11,7 +11,7 @@
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sace_prefix = "xn--"
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# This assumes query strings, so AllowUnassigned is true
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def nameprep(label):
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def nameprep(label): # type: (str) -> str
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# Map
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newlabel = []
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for c in label:
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@ -25,7 +25,7 @@ def nameprep(label):
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label = unicodedata.normalize("NFKC", label)
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# Prohibit
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for c in label:
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for i, c in enumerate(label):
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if stringprep.in_table_c12(c) or \
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stringprep.in_table_c22(c) or \
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stringprep.in_table_c3(c) or \
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@ -35,7 +35,7 @@ def nameprep(label):
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stringprep.in_table_c7(c) or \
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stringprep.in_table_c8(c) or \
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stringprep.in_table_c9(c):
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raise UnicodeError("Invalid character %r" % c)
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raise UnicodeEncodeError("idna", label, i, i+1, f"Invalid character {c!r}")
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# Check bidi
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RandAL = [stringprep.in_table_d1(x) for x in label]
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@ -46,29 +46,38 @@ def nameprep(label):
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# This is table C.8, which was already checked
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# 2) If a string contains any RandALCat character, the string
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# MUST NOT contain any LCat character.
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if any(stringprep.in_table_d2(x) for x in label):
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raise UnicodeError("Violation of BIDI requirement 2")
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for i, x in enumerate(label):
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if stringprep.in_table_d2(x):
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raise UnicodeEncodeError("idna", label, i, i+1,
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"Violation of BIDI requirement 2")
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# 3) If a string contains any RandALCat character, a
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# RandALCat character MUST be the first character of the
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# string, and a RandALCat character MUST be the last
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# character of the string.
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if not RandAL[0] or not RandAL[-1]:
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raise UnicodeError("Violation of BIDI requirement 3")
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if not RandAL[0]:
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raise UnicodeEncodeError("idna", label, 0, 1,
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"Violation of BIDI requirement 3")
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if not RandAL[-1]:
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raise UnicodeEncodeError("idna", label, len(label)-1, len(label),
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"Violation of BIDI requirement 3")
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return label
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def ToASCII(label):
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def ToASCII(label): # type: (str) -> bytes
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try:
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# Step 1: try ASCII
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label = label.encode("ascii")
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except UnicodeError:
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label_ascii = label.encode("ascii")
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except UnicodeEncodeError:
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pass
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else:
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# Skip to step 3: UseSTD3ASCIIRules is false, so
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# Skip to step 8.
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if 0 < len(label) < 64:
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return label
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raise UnicodeError("label empty or too long")
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if 0 < len(label_ascii) < 64:
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return label_ascii
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if len(label) == 0:
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raise UnicodeEncodeError("idna", label, 0, 1, "label empty")
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else:
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raise UnicodeEncodeError("idna", label, 0, len(label), "label too long")
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# Step 2: nameprep
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label = nameprep(label)
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@ -76,29 +85,34 @@ def ToASCII(label):
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# Step 3: UseSTD3ASCIIRules is false
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# Step 4: try ASCII
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try:
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label = label.encode("ascii")
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except UnicodeError:
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label_ascii = label.encode("ascii")
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except UnicodeEncodeError:
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pass
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else:
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# Skip to step 8.
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if 0 < len(label) < 64:
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return label
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raise UnicodeError("label empty or too long")
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return label_ascii
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if len(label) == 0:
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raise UnicodeEncodeError("idna", label, 0, 1, "label empty")
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else:
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raise UnicodeEncodeError("idna", label, 0, len(label), "label too long")
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# Step 5: Check ACE prefix
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if label[:4].lower() == sace_prefix:
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raise UnicodeError("Label starts with ACE prefix")
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if label.lower().startswith(sace_prefix):
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raise UnicodeEncodeError(
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"idna", label, 0, len(sace_prefix), "Label starts with ACE prefix")
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# Step 6: Encode with PUNYCODE
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label = label.encode("punycode")
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label_ascii = label.encode("punycode")
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# Step 7: Prepend ACE prefix
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label = ace_prefix + label
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label_ascii = ace_prefix + label_ascii
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# Step 8: Check size
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if 0 < len(label) < 64:
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return label
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raise UnicodeError("label empty or too long")
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# do not check for empty as we prepend ace_prefix.
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if len(label_ascii) < 64:
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return label_ascii
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raise UnicodeEncodeError("idna", label, 0, len(label), "label too long")
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def ToUnicode(label):
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if len(label) > 1024:
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@ -110,7 +124,9 @@ def ToUnicode(label):
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# per https://www.rfc-editor.org/rfc/rfc3454#section-3.1 while still
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# preventing us from wasting time decoding a big thing that'll just
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# hit the actual <= 63 length limit in Step 6.
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raise UnicodeError("label way too long")
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if isinstance(label, str):
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label = label.encode("utf-8", errors="backslashreplace")
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raise UnicodeDecodeError("idna", label, 0, len(label), "label way too long")
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# Step 1: Check for ASCII
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if isinstance(label, bytes):
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pure_ascii = True
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@ -118,25 +134,32 @@ def ToUnicode(label):
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try:
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label = label.encode("ascii")
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pure_ascii = True
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except UnicodeError:
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except UnicodeEncodeError:
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pure_ascii = False
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if not pure_ascii:
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assert isinstance(label, str)
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# Step 2: Perform nameprep
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label = nameprep(label)
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# It doesn't say this, but apparently, it should be ASCII now
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try:
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label = label.encode("ascii")
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except UnicodeError:
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raise UnicodeError("Invalid character in IDN label")
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except UnicodeEncodeError as exc:
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raise UnicodeEncodeError("idna", label, exc.start, exc.end,
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"Invalid character in IDN label")
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# Step 3: Check for ACE prefix
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if not label[:4].lower() == ace_prefix:
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assert isinstance(label, bytes)
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if not label.lower().startswith(ace_prefix):
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return str(label, "ascii")
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# Step 4: Remove ACE prefix
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label1 = label[len(ace_prefix):]
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# Step 5: Decode using PUNYCODE
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result = label1.decode("punycode")
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try:
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result = label1.decode("punycode")
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except UnicodeDecodeError as exc:
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offset = len(ace_prefix)
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raise UnicodeDecodeError("idna", label, offset+exc.start, offset+exc.end, exc.reason)
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# Step 6: Apply ToASCII
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label2 = ToASCII(result)
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@ -144,7 +167,8 @@ def ToUnicode(label):
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# Step 7: Compare the result of step 6 with the one of step 3
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# label2 will already be in lower case.
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if str(label, "ascii").lower() != str(label2, "ascii"):
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raise UnicodeError("IDNA does not round-trip", label, label2)
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raise UnicodeDecodeError("idna", label, 0, len(label),
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f"IDNA does not round-trip, '{label!r}' != '{label2!r}'")
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# Step 8: return the result of step 5
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return result
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@ -156,7 +180,7 @@ def encode(self, input, errors='strict'):
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if errors != 'strict':
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# IDNA is quite clear that implementations must be strict
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raise UnicodeError("unsupported error handling "+errors)
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raise UnicodeError(f"Unsupported error handling: {errors}")
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if not input:
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return b'', 0
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@ -168,11 +192,16 @@ def encode(self, input, errors='strict'):
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else:
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# ASCII name: fast path
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labels = result.split(b'.')
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for label in labels[:-1]:
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if not (0 < len(label) < 64):
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raise UnicodeError("label empty or too long")
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if len(labels[-1]) >= 64:
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raise UnicodeError("label too long")
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for i, label in enumerate(labels[:-1]):
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if len(label) == 0:
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offset = sum(len(l) for l in labels[:i]) + i
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raise UnicodeEncodeError("idna", input, offset, offset+1,
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"label empty")
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for i, label in enumerate(labels):
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if len(label) >= 64:
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offset = sum(len(l) for l in labels[:i]) + i
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raise UnicodeEncodeError("idna", input, offset, offset+len(label),
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"label too long")
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return result, len(input)
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result = bytearray()
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@ -182,17 +211,27 @@ def encode(self, input, errors='strict'):
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del labels[-1]
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else:
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trailing_dot = b''
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for label in labels:
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for i, label in enumerate(labels):
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if result:
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# Join with U+002E
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result.extend(b'.')
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result.extend(ToASCII(label))
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try:
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result.extend(ToASCII(label))
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except (UnicodeEncodeError, UnicodeDecodeError) as exc:
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offset = sum(len(l) for l in labels[:i]) + i
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raise UnicodeEncodeError(
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"idna",
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input,
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offset + exc.start,
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offset + exc.end,
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exc.reason,
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)
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return bytes(result+trailing_dot), len(input)
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def decode(self, input, errors='strict'):
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if errors != 'strict':
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raise UnicodeError("Unsupported error handling "+errors)
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raise UnicodeError(f"Unsupported error handling: {errors}")
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if not input:
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return "", 0
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@ -218,8 +257,15 @@ def decode(self, input, errors='strict'):
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trailing_dot = ''
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result = []
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for label in labels:
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result.append(ToUnicode(label))
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for i, label in enumerate(labels):
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try:
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u_label = ToUnicode(label)
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except (UnicodeEncodeError, UnicodeDecodeError) as exc:
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offset = sum(len(x) for x in labels[:i]) + len(labels[:i])
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raise UnicodeDecodeError(
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"idna", input, offset+exc.start, offset+exc.end, exc.reason)
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else:
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result.append(u_label)
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return ".".join(result)+trailing_dot, len(input)
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@ -227,7 +273,7 @@ class IncrementalEncoder(codecs.BufferedIncrementalEncoder):
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def _buffer_encode(self, input, errors, final):
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if errors != 'strict':
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# IDNA is quite clear that implementations must be strict
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raise UnicodeError("unsupported error handling "+errors)
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raise UnicodeError(f"Unsupported error handling: {errors}")
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if not input:
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return (b'', 0)
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@ -251,7 +297,16 @@ def _buffer_encode(self, input, errors, final):
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# Join with U+002E
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result.extend(b'.')
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size += 1
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result.extend(ToASCII(label))
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try:
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result.extend(ToASCII(label))
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except (UnicodeEncodeError, UnicodeDecodeError) as exc:
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raise UnicodeEncodeError(
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"idna",
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input,
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size + exc.start,
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size + exc.end,
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exc.reason,
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)
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size += len(label)
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result += trailing_dot
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@ -261,7 +316,7 @@ def _buffer_encode(self, input, errors, final):
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class IncrementalDecoder(codecs.BufferedIncrementalDecoder):
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def _buffer_decode(self, input, errors, final):
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if errors != 'strict':
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raise UnicodeError("Unsupported error handling "+errors)
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raise UnicodeError("Unsupported error handling: {errors}")
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if not input:
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return ("", 0)
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@ -271,7 +326,11 @@ def _buffer_decode(self, input, errors, final):
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labels = dots.split(input)
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else:
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# Must be ASCII string
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input = str(input, "ascii")
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try:
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input = str(input, "ascii")
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except (UnicodeEncodeError, UnicodeDecodeError) as exc:
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raise UnicodeDecodeError("idna", input,
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exc.start, exc.end, exc.reason)
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labels = input.split(".")
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trailing_dot = ''
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@ -288,7 +347,18 @@ def _buffer_decode(self, input, errors, final):
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result = []
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size = 0
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for label in labels:
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result.append(ToUnicode(label))
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try:
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u_label = ToUnicode(label)
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except (UnicodeEncodeError, UnicodeDecodeError) as exc:
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raise UnicodeDecodeError(
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"idna",
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input.encode("ascii", errors="backslashreplace"),
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size + exc.start,
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size + exc.end,
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exc.reason,
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)
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else:
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result.append(u_label)
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if size:
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size += 1
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size += len(label)
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@ -1,4 +1,4 @@
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""" Codec for the Punicode encoding, as specified in RFC 3492
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""" Codec for the Punycode encoding, as specified in RFC 3492
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Written by Martin v. Löwis.
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"""
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@ -131,10 +131,11 @@ def decode_generalized_number(extended, extpos, bias, errors):
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j = 0
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while 1:
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try:
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char = ord(extended[extpos])
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char = extended[extpos]
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except IndexError:
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if errors == "strict":
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raise UnicodeError("incomplete punicode string")
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raise UnicodeDecodeError("punycode", extended, extpos, extpos+1,
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"incomplete punycode string")
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return extpos + 1, None
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extpos += 1
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if 0x41 <= char <= 0x5A: # A-Z
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@ -142,8 +143,8 @@ def decode_generalized_number(extended, extpos, bias, errors):
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elif 0x30 <= char <= 0x39:
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digit = char - 22 # 0x30-26
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elif errors == "strict":
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raise UnicodeError("Invalid extended code point '%s'"
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% extended[extpos-1])
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raise UnicodeDecodeError("punycode", extended, extpos-1, extpos,
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f"Invalid extended code point '{extended[extpos-1]}'")
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else:
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return extpos, None
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t = T(j, bias)
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@ -155,11 +156,14 @@ def decode_generalized_number(extended, extpos, bias, errors):
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def insertion_sort(base, extended, errors):
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"""3.2 Insertion unsort coding"""
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"""3.2 Insertion sort coding"""
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# This function raises UnicodeDecodeError with position in the extended.
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# Caller should add the offset.
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char = 0x80
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pos = -1
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bias = 72
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extpos = 0
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while extpos < len(extended):
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newpos, delta = decode_generalized_number(extended, extpos,
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bias, errors)
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@ -171,7 +175,9 @@ def insertion_sort(base, extended, errors):
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char += pos // (len(base) + 1)
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if char > 0x10FFFF:
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if errors == "strict":
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raise UnicodeError("Invalid character U+%x" % char)
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raise UnicodeDecodeError(
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"punycode", extended, pos-1, pos,
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f"Invalid character U+{char:x}")
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char = ord('?')
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pos = pos % (len(base) + 1)
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base = base[:pos] + chr(char) + base[pos:]
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@ -187,11 +193,21 @@ def punycode_decode(text, errors):
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pos = text.rfind(b"-")
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if pos == -1:
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base = ""
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extended = str(text, "ascii").upper()
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extended = text.upper()
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else:
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base = str(text[:pos], "ascii", errors)
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extended = str(text[pos+1:], "ascii").upper()
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return insertion_sort(base, extended, errors)
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try:
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base = str(text[:pos], "ascii", errors)
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except UnicodeDecodeError as exc:
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raise UnicodeDecodeError("ascii", text, exc.start, exc.end,
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exc.reason) from None
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extended = text[pos+1:].upper()
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try:
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return insertion_sort(base, extended, errors)
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except UnicodeDecodeError as exc:
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offset = pos + 1
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raise UnicodeDecodeError("punycode", text,
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offset+exc.start, offset+exc.end,
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exc.reason) from None
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### Codec APIs
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@ -203,7 +219,7 @@ def encode(self, input, errors='strict'):
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def decode(self, input, errors='strict'):
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if errors not in ('strict', 'replace', 'ignore'):
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raise UnicodeError("Unsupported error handling "+errors)
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raise UnicodeError(f"Unsupported error handling: {errors}")
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res = punycode_decode(input, errors)
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return res, len(input)
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@ -214,7 +230,7 @@ def encode(self, input, final=False):
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class IncrementalDecoder(codecs.IncrementalDecoder):
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def decode(self, input, final=False):
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if self.errors not in ('strict', 'replace', 'ignore'):
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raise UnicodeError("Unsupported error handling "+self.errors)
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raise UnicodeError(f"Unsupported error handling: {self.errors}")
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return punycode_decode(input, self.errors)
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class StreamWriter(Codec,codecs.StreamWriter):
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@ -1,6 +1,6 @@
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""" Python 'undefined' Codec
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This codec will always raise a ValueError exception when being
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This codec will always raise a UnicodeError exception when being
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used. It is intended for use by the site.py file to switch off
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automatic string to Unicode coercion.
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@ -64,7 +64,7 @@ def _buffer_decode(self, input, errors, final):
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elif byteorder == 1:
|
||||
self.decoder = codecs.utf_16_be_decode
|
||||
elif consumed >= 2:
|
||||
raise UnicodeError("UTF-16 stream does not start with BOM")
|
||||
raise UnicodeDecodeError("utf-16", input, 0, 2, "Stream does not start with BOM")
|
||||
return (output, consumed)
|
||||
return self.decoder(input, self.errors, final)
|
||||
|
||||
|
|
@ -138,7 +138,7 @@ def decode(self, input, errors='strict'):
|
|||
elif byteorder == 1:
|
||||
self.decode = codecs.utf_16_be_decode
|
||||
elif consumed>=2:
|
||||
raise UnicodeError("UTF-16 stream does not start with BOM")
|
||||
raise UnicodeDecodeError("utf-16", input, 0, 2, "Stream does not start with BOM")
|
||||
return (object, consumed)
|
||||
|
||||
### encodings module API
|
||||
|
|
|
|||
|
|
@ -59,7 +59,7 @@ def _buffer_decode(self, input, errors, final):
|
|||
elif byteorder == 1:
|
||||
self.decoder = codecs.utf_32_be_decode
|
||||
elif consumed >= 4:
|
||||
raise UnicodeError("UTF-32 stream does not start with BOM")
|
||||
raise UnicodeDecodeError("utf-32", input, 0, 4, "Stream does not start with BOM")
|
||||
return (output, consumed)
|
||||
return self.decoder(input, self.errors, final)
|
||||
|
||||
|
|
@ -132,8 +132,8 @@ def decode(self, input, errors='strict'):
|
|||
self.decode = codecs.utf_32_le_decode
|
||||
elif byteorder == 1:
|
||||
self.decode = codecs.utf_32_be_decode
|
||||
elif consumed>=4:
|
||||
raise UnicodeError("UTF-32 stream does not start with BOM")
|
||||
elif consumed >= 4:
|
||||
raise UnicodeDecodeError("utf-32", input, 0, 4, "Stream does not start with BOM")
|
||||
return (object, consumed)
|
||||
|
||||
### encodings module API
|
||||
|
|
|
|||
|
|
@ -482,11 +482,11 @@ def test_only_one_bom(self):
|
|||
def test_badbom(self):
|
||||
s = io.BytesIO(4*b"\xff")
|
||||
f = codecs.getreader(self.encoding)(s)
|
||||
self.assertRaises(UnicodeError, f.read)
|
||||
self.assertRaises(UnicodeDecodeError, f.read)
|
||||
|
||||
s = io.BytesIO(8*b"\xff")
|
||||
f = codecs.getreader(self.encoding)(s)
|
||||
self.assertRaises(UnicodeError, f.read)
|
||||
self.assertRaises(UnicodeDecodeError, f.read)
|
||||
|
||||
def test_partial(self):
|
||||
self.check_partial(
|
||||
|
|
@ -666,11 +666,11 @@ def test_only_one_bom(self):
|
|||
def test_badbom(self):
|
||||
s = io.BytesIO(b"\xff\xff")
|
||||
f = codecs.getreader(self.encoding)(s)
|
||||
self.assertRaises(UnicodeError, f.read)
|
||||
self.assertRaises(UnicodeDecodeError, f.read)
|
||||
|
||||
s = io.BytesIO(b"\xff\xff\xff\xff")
|
||||
f = codecs.getreader(self.encoding)(s)
|
||||
self.assertRaises(UnicodeError, f.read)
|
||||
self.assertRaises(UnicodeDecodeError, f.read)
|
||||
|
||||
def test_partial(self):
|
||||
self.check_partial(
|
||||
|
|
@ -1356,13 +1356,29 @@ def test_decode(self):
|
|||
|
||||
def test_decode_invalid(self):
|
||||
testcases = [
|
||||
(b"xn--w&", "strict", UnicodeError()),
|
||||
(b"xn--w&", "strict", UnicodeDecodeError("punycode", b"", 5, 6, "")),
|
||||
(b"&egbpdaj6bu4bxfgehfvwxn", "strict", UnicodeDecodeError("punycode", b"", 0, 1, "")),
|
||||
(b"egbpdaj6bu&4bx&fgehfvwxn", "strict", UnicodeDecodeError("punycode", b"", 10, 11, "")),
|
||||
(b"egbpdaj6bu4bxfgehfvwxn&", "strict", UnicodeDecodeError("punycode", b"", 22, 23, "")),
|
||||
(b"\xFFProprostnemluvesky-uyb24dma41a", "strict", UnicodeDecodeError("ascii", b"", 0, 1, "")),
|
||||
(b"Pro\xFFprostnemluvesky-uyb24dma41a", "strict", UnicodeDecodeError("ascii", b"", 3, 4, "")),
|
||||
(b"Proprost&nemluvesky-uyb24&dma41a", "strict", UnicodeDecodeError("punycode", b"", 25, 26, "")),
|
||||
(b"Proprostnemluvesky&-&uyb24dma41a", "strict", UnicodeDecodeError("punycode", b"", 20, 21, "")),
|
||||
(b"Proprostnemluvesky-&uyb24dma41a", "strict", UnicodeDecodeError("punycode", b"", 19, 20, "")),
|
||||
(b"Proprostnemluvesky-uyb24d&ma41a", "strict", UnicodeDecodeError("punycode", b"", 25, 26, "")),
|
||||
(b"Proprostnemluvesky-uyb24dma41a&", "strict", UnicodeDecodeError("punycode", b"", 30, 31, "")),
|
||||
(b"xn--w&", "ignore", "xn-"),
|
||||
]
|
||||
for puny, errors, expected in testcases:
|
||||
with self.subTest(puny=puny, errors=errors):
|
||||
if isinstance(expected, Exception):
|
||||
self.assertRaises(UnicodeError, puny.decode, "punycode", errors)
|
||||
with self.assertRaises(UnicodeDecodeError) as cm:
|
||||
puny.decode("punycode", errors)
|
||||
exc = cm.exception
|
||||
self.assertEqual(exc.encoding, expected.encoding)
|
||||
self.assertEqual(exc.object, puny)
|
||||
self.assertEqual(exc.start, expected.start)
|
||||
self.assertEqual(exc.end, expected.end)
|
||||
else:
|
||||
self.assertEqual(puny.decode("punycode", errors), expected)
|
||||
|
||||
|
|
@ -1532,7 +1548,7 @@ def test_nameprep(self):
|
|||
orig = str(orig, "utf-8", "surrogatepass")
|
||||
if prepped is None:
|
||||
# Input contains prohibited characters
|
||||
self.assertRaises(UnicodeError, nameprep, orig)
|
||||
self.assertRaises(UnicodeEncodeError, nameprep, orig)
|
||||
else:
|
||||
prepped = str(prepped, "utf-8", "surrogatepass")
|
||||
try:
|
||||
|
|
@ -1542,6 +1558,23 @@ def test_nameprep(self):
|
|||
|
||||
|
||||
class IDNACodecTest(unittest.TestCase):
|
||||
|
||||
invalid_decode_testcases = [
|
||||
(b"\xFFpython.org", UnicodeDecodeError("idna", b"\xFFpython.org", 0, 1, "")),
|
||||
(b"pyt\xFFhon.org", UnicodeDecodeError("idna", b"pyt\xFFhon.org", 3, 4, "")),
|
||||
(b"python\xFF.org", UnicodeDecodeError("idna", b"python\xFF.org", 6, 7, "")),
|
||||
(b"python.\xFForg", UnicodeDecodeError("idna", b"python.\xFForg", 7, 8, "")),
|
||||
(b"python.o\xFFrg", UnicodeDecodeError("idna", b"python.o\xFFrg", 8, 9, "")),
|
||||
(b"python.org\xFF", UnicodeDecodeError("idna", b"python.org\xFF", 10, 11, "")),
|
||||
(b"xn--pythn-&mua.org", UnicodeDecodeError("idna", b"xn--pythn-&mua.org", 10, 11, "")),
|
||||
(b"xn--pythn-m&ua.org", UnicodeDecodeError("idna", b"xn--pythn-m&ua.org", 11, 12, "")),
|
||||
(b"xn--pythn-mua&.org", UnicodeDecodeError("idna", b"xn--pythn-mua&.org", 13, 14, "")),
|
||||
]
|
||||
invalid_encode_testcases = [
|
||||
(f"foo.{'\xff'*60}", UnicodeEncodeError("idna", f"foo.{'\xff'*60}", 4, 64, "")),
|
||||
("あさ.\u034f", UnicodeEncodeError("idna", "あさ.\u034f", 3, 4, "")),
|
||||
]
|
||||
|
||||
def test_builtin_decode(self):
|
||||
self.assertEqual(str(b"python.org", "idna"), "python.org")
|
||||
self.assertEqual(str(b"python.org.", "idna"), "python.org.")
|
||||
|
|
@ -1555,16 +1588,38 @@ def test_builtin_decode(self):
|
|||
self.assertEqual(str(b"bugs.XN--pythn-mua.org.", "idna"),
|
||||
"bugs.pyth\xf6n.org.")
|
||||
|
||||
def test_builtin_decode_invalid(self):
|
||||
for case, expected in self.invalid_decode_testcases:
|
||||
with self.subTest(case=case, expected=expected):
|
||||
with self.assertRaises(UnicodeDecodeError) as cm:
|
||||
case.decode("idna")
|
||||
exc = cm.exception
|
||||
self.assertEqual(exc.encoding, expected.encoding)
|
||||
self.assertEqual(exc.object, expected.object)
|
||||
self.assertEqual(exc.start, expected.start, msg=f'reason: {exc.reason}')
|
||||
self.assertEqual(exc.end, expected.end)
|
||||
|
||||
def test_builtin_encode(self):
|
||||
self.assertEqual("python.org".encode("idna"), b"python.org")
|
||||
self.assertEqual("python.org.".encode("idna"), b"python.org.")
|
||||
self.assertEqual("pyth\xf6n.org".encode("idna"), b"xn--pythn-mua.org")
|
||||
self.assertEqual("pyth\xf6n.org.".encode("idna"), b"xn--pythn-mua.org.")
|
||||
|
||||
def test_builtin_encode_invalid(self):
|
||||
for case, expected in self.invalid_encode_testcases:
|
||||
with self.subTest(case=case, expected=expected):
|
||||
with self.assertRaises(UnicodeEncodeError) as cm:
|
||||
case.encode("idna")
|
||||
exc = cm.exception
|
||||
self.assertEqual(exc.encoding, expected.encoding)
|
||||
self.assertEqual(exc.object, expected.object)
|
||||
self.assertEqual(exc.start, expected.start)
|
||||
self.assertEqual(exc.end, expected.end)
|
||||
|
||||
def test_builtin_decode_length_limit(self):
|
||||
with self.assertRaisesRegex(UnicodeError, "way too long"):
|
||||
with self.assertRaisesRegex(UnicodeDecodeError, "way too long"):
|
||||
(b"xn--016c"+b"a"*1100).decode("idna")
|
||||
with self.assertRaisesRegex(UnicodeError, "too long"):
|
||||
with self.assertRaisesRegex(UnicodeDecodeError, "too long"):
|
||||
(b"xn--016c"+b"a"*70).decode("idna")
|
||||
|
||||
def test_stream(self):
|
||||
|
|
@ -1602,6 +1657,39 @@ def test_incremental_decode(self):
|
|||
self.assertEqual(decoder.decode(b"rg."), "org.")
|
||||
self.assertEqual(decoder.decode(b"", True), "")
|
||||
|
||||
def test_incremental_decode_invalid(self):
|
||||
iterdecode_testcases = [
|
||||
(b"\xFFpython.org", UnicodeDecodeError("idna", b"\xFF", 0, 1, "")),
|
||||
(b"pyt\xFFhon.org", UnicodeDecodeError("idna", b"pyt\xFF", 3, 4, "")),
|
||||
(b"python\xFF.org", UnicodeDecodeError("idna", b"python\xFF", 6, 7, "")),
|
||||
(b"python.\xFForg", UnicodeDecodeError("idna", b"\xFF", 0, 1, "")),
|
||||
(b"python.o\xFFrg", UnicodeDecodeError("idna", b"o\xFF", 1, 2, "")),
|
||||
(b"python.org\xFF", UnicodeDecodeError("idna", b"org\xFF", 3, 4, "")),
|
||||
(b"xn--pythn-&mua.org", UnicodeDecodeError("idna", b"xn--pythn-&mua.", 10, 11, "")),
|
||||
(b"xn--pythn-m&ua.org", UnicodeDecodeError("idna", b"xn--pythn-m&ua.", 11, 12, "")),
|
||||
(b"xn--pythn-mua&.org", UnicodeDecodeError("idna", b"xn--pythn-mua&.", 13, 14, "")),
|
||||
]
|
||||
for case, expected in iterdecode_testcases:
|
||||
with self.subTest(case=case, expected=expected):
|
||||
with self.assertRaises(UnicodeDecodeError) as cm:
|
||||
list(codecs.iterdecode((bytes([c]) for c in case), "idna"))
|
||||
exc = cm.exception
|
||||
self.assertEqual(exc.encoding, expected.encoding)
|
||||
self.assertEqual(exc.object, expected.object)
|
||||
self.assertEqual(exc.start, expected.start)
|
||||
self.assertEqual(exc.end, expected.end)
|
||||
|
||||
decoder = codecs.getincrementaldecoder("idna")()
|
||||
for case, expected in self.invalid_decode_testcases:
|
||||
with self.subTest(case=case, expected=expected):
|
||||
with self.assertRaises(UnicodeDecodeError) as cm:
|
||||
decoder.decode(case)
|
||||
exc = cm.exception
|
||||
self.assertEqual(exc.encoding, expected.encoding)
|
||||
self.assertEqual(exc.object, expected.object)
|
||||
self.assertEqual(exc.start, expected.start)
|
||||
self.assertEqual(exc.end, expected.end)
|
||||
|
||||
def test_incremental_encode(self):
|
||||
self.assertEqual(
|
||||
b"".join(codecs.iterencode("python.org", "idna")),
|
||||
|
|
@ -1630,6 +1718,23 @@ def test_incremental_encode(self):
|
|||
self.assertEqual(encoder.encode("ample.org."), b"xn--xample-9ta.org.")
|
||||
self.assertEqual(encoder.encode("", True), b"")
|
||||
|
||||
def test_incremental_encode_invalid(self):
|
||||
iterencode_testcases = [
|
||||
(f"foo.{'\xff'*60}", UnicodeEncodeError("idna", f"{'\xff'*60}", 0, 60, "")),
|
||||
("あさ.\u034f", UnicodeEncodeError("idna", "\u034f", 0, 1, "")),
|
||||
]
|
||||
for case, expected in iterencode_testcases:
|
||||
with self.subTest(case=case, expected=expected):
|
||||
with self.assertRaises(UnicodeEncodeError) as cm:
|
||||
list(codecs.iterencode(case, "idna"))
|
||||
exc = cm.exception
|
||||
self.assertEqual(exc.encoding, expected.encoding)
|
||||
self.assertEqual(exc.object, expected.object)
|
||||
self.assertEqual(exc.start, expected.start)
|
||||
self.assertEqual(exc.end, expected.end)
|
||||
|
||||
# codecs.getincrementalencoder.encode() does not throw an error
|
||||
|
||||
def test_errors(self):
|
||||
"""Only supports "strict" error handler"""
|
||||
"python.org".encode("idna", "strict")
|
||||
|
|
|
|||
|
|
@ -303,7 +303,7 @@ def test_setstate_validates_input(self):
|
|||
self.assertRaises(TypeError, decoder.setstate, 123)
|
||||
self.assertRaises(TypeError, decoder.setstate, ("invalid", 0))
|
||||
self.assertRaises(TypeError, decoder.setstate, (b"1234", "invalid"))
|
||||
self.assertRaises(UnicodeError, decoder.setstate, (b"123456789", 0))
|
||||
self.assertRaises(UnicodeDecodeError, decoder.setstate, (b"123456789", 0))
|
||||
|
||||
class Test_StreamReader(unittest.TestCase):
|
||||
def test_bug1728403(self):
|
||||
|
|
|
|||
|
|
@ -0,0 +1,2 @@
|
|||
Changes Unicode codecs to return UnicodeEncodeError or UnicodeDecodeError,
|
||||
rather than just UnicodeError.
|
||||
|
|
@ -825,8 +825,15 @@ encoder_encode_stateful(MultibyteStatefulEncoderContext *ctx,
|
|||
if (inpos < datalen) {
|
||||
if (datalen - inpos > MAXENCPENDING) {
|
||||
/* normal codecs can't reach here */
|
||||
PyErr_SetString(PyExc_UnicodeError,
|
||||
"pending buffer overflow");
|
||||
PyObject *excobj = PyObject_CallFunction(PyExc_UnicodeEncodeError,
|
||||
"sOnns",
|
||||
ctx->codec->encoding,
|
||||
inbuf,
|
||||
inpos, datalen,
|
||||
"pending buffer overflow");
|
||||
if (excobj == NULL) goto errorexit;
|
||||
PyErr_SetObject(PyExc_UnicodeEncodeError, excobj);
|
||||
Py_DECREF(excobj);
|
||||
goto errorexit;
|
||||
}
|
||||
ctx->pending = PyUnicode_Substring(inbuf, inpos, datalen);
|
||||
|
|
@ -857,7 +864,16 @@ decoder_append_pending(MultibyteStatefulDecoderContext *ctx,
|
|||
npendings = (Py_ssize_t)(buf->inbuf_end - buf->inbuf);
|
||||
if (npendings + ctx->pendingsize > MAXDECPENDING ||
|
||||
npendings > PY_SSIZE_T_MAX - ctx->pendingsize) {
|
||||
PyErr_SetString(PyExc_UnicodeError, "pending buffer overflow");
|
||||
Py_ssize_t bufsize = (Py_ssize_t)(buf->inbuf_end - buf->inbuf_top);
|
||||
PyObject *excobj = PyUnicodeDecodeError_Create(ctx->codec->encoding,
|
||||
(const char *)buf->inbuf_top,
|
||||
bufsize,
|
||||
0,
|
||||
bufsize,
|
||||
"pending buffer overflow");
|
||||
if (excobj == NULL) return -1;
|
||||
PyErr_SetObject(PyExc_UnicodeDecodeError, excobj);
|
||||
Py_DECREF(excobj);
|
||||
return -1;
|
||||
}
|
||||
memcpy(ctx->pending + ctx->pendingsize, buf->inbuf, npendings);
|
||||
|
|
@ -938,7 +954,17 @@ _multibytecodec_MultibyteIncrementalEncoder_getstate_impl(MultibyteIncrementalEn
|
|||
return NULL;
|
||||
}
|
||||
if (pendingsize > MAXENCPENDING*4) {
|
||||
PyErr_SetString(PyExc_UnicodeError, "pending buffer too large");
|
||||
PyObject *excobj = PyObject_CallFunction(PyExc_UnicodeEncodeError,
|
||||
"sOnns",
|
||||
self->codec->encoding,
|
||||
self->pending,
|
||||
0, PyUnicode_GET_LENGTH(self->pending),
|
||||
"pending buffer too large");
|
||||
if (excobj == NULL) {
|
||||
return NULL;
|
||||
}
|
||||
PyErr_SetObject(PyExc_UnicodeEncodeError, excobj);
|
||||
Py_DECREF(excobj);
|
||||
return NULL;
|
||||
}
|
||||
statebytes[0] = (unsigned char)pendingsize;
|
||||
|
|
@ -1267,7 +1293,13 @@ _multibytecodec_MultibyteIncrementalDecoder_setstate_impl(MultibyteIncrementalDe
|
|||
}
|
||||
|
||||
if (buffersize > MAXDECPENDING) {
|
||||
PyErr_SetString(PyExc_UnicodeError, "pending buffer too large");
|
||||
PyObject *excobj = PyUnicodeDecodeError_Create(self->codec->encoding,
|
||||
PyBytes_AS_STRING(buffer), buffersize,
|
||||
0, buffersize,
|
||||
"pending buffer too large");
|
||||
if (excobj == NULL) return NULL;
|
||||
PyErr_SetObject(PyExc_UnicodeDecodeError, excobj);
|
||||
Py_DECREF(excobj);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue