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-rw-r--r--ChangeLog4
-rw-r--r--lib/uri/common.rb28
2 files changed, 23 insertions, 9 deletions
diff --git a/ChangeLog b/ChangeLog
index cf82d4fb51..76b8017f8c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Tue Apr 12 19:19:50 2011 NARUSE, Yui <naruse@ruby-lang.org>
+
+ * lib/uri/common.rb: avoid race condition. fixes #4572
+
Tue Apr 12 18:07:13 2011 TAKAO Kouji <kouji@takao7.net>
* ext/readline/extconf.rb: --disable-libedit to disable
diff --git a/lib/uri/common.rb b/lib/uri/common.rb
index e2ccbdc846..3bfe33ac64 100644
--- a/lib/uri/common.rb
+++ b/lib/uri/common.rb
@@ -743,11 +743,16 @@ module URI
# See URI.decode_www_form_component, URI.encode_www_form
def self.encode_www_form_component(str)
if TBLENCWWWCOMP_.empty?
+ tbl = {}
256.times do |i|
- TBLENCWWWCOMP_[i.chr] = '%%%02X' % i
+ tbl[i.chr] = '%%%02X' % i
+ end
+ tbl[' '] = '+'
+ begin
+ TBLENCWWWCOMP_.replace(tbl)
+ TBLENCWWWCOMP_.freeze
+ rescue
end
- TBLENCWWWCOMP_[' '] = '+'
- TBLENCWWWCOMP_.freeze
end
str = str.to_s
if HTML5ASCIIINCOMPAT.include?(str.encoding)
@@ -767,15 +772,20 @@ module URI
# See URI.encode_www_form_component, URI.decode_www_form
def self.decode_www_form_component(str, enc=Encoding::UTF_8)
if TBLDECWWWCOMP_.empty?
+ tbl = {}
256.times do |i|
h, l = i>>4, i&15
- TBLDECWWWCOMP_['%%%X%X' % [h, l]] = i.chr
- TBLDECWWWCOMP_['%%%x%X' % [h, l]] = i.chr
- TBLDECWWWCOMP_['%%%X%x' % [h, l]] = i.chr
- TBLDECWWWCOMP_['%%%x%x' % [h, l]] = i.chr
+ tbl['%%%X%X' % [h, l]] = i.chr
+ tbl['%%%x%X' % [h, l]] = i.chr
+ tbl['%%%X%x' % [h, l]] = i.chr
+ tbl['%%%x%x' % [h, l]] = i.chr
+ end
+ tbl['+'] = ' '
+ begin
+ TBLDECWWWCOMP_.replace(tbl)
+ TBLDECWWWCOMP_.freeze
+ rescue
end
- TBLDECWWWCOMP_['+'] = ' '
- TBLDECWWWCOMP_.freeze
end
raise ArgumentError, "invalid %-encoding (#{str})" unless /\A(?:%\h\h|[^%]+)*\z/ =~ str
str.gsub(/\+|%\h\h/, TBLDECWWWCOMP_).force_encoding(enc)