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* bignum.c (rb_big_aref): idx may be a Bignum.

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* numeric.c (fix_aref): negative index must return zero.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@1810 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
matz 2001-11-01 05:11:24 +00:00
parent a313c30d9c
commit bbb608ad79
5 changed files with 337 additions and 37 deletions
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6
ChangeLog
View file

@ -1,3 +1,9 @@
Thu Nov 1 14:08:42 2001 Yukihiro Matsumoto <matz@ruby-lang.org>
* bignum.c (rb_big_aref): idx may be a Bignum.
* numeric.c (fix_aref): negative index must return zero.
Thu Nov 1 13:23:50 2001 Yukihiro Matsumoto <matz@ruby-lang.org>
* gc.c (gc_mark_children): should NOT treat last element of

8
bignum.c
View file

@ -1324,9 +1324,15 @@ rb_big_aref(x, y)
VALUE x, y;
{
BDIGIT *xds;
int shift = NUM2INT(y);
int shift;
int s1, s2;
if (TYPE(y) == T_BIGNUM) {
if (!RBIGNUM(y)->sign || RBIGNUM(x)->sign)
return INT2FIX(0);
return INT2FIX(1);
}
shift = NUM2INT(y);
if (shift < 0) return INT2FIX(0);
s1 = shift/BITSPERDIG;
s2 = shift%BITSPERDIG;

350
lib/resolv.rb
View file

@ -1,3 +1,176 @@
=begin
= resolv library
resolv.rb is a resolver library written in Ruby.
Since it is written in Ruby, it is thread-aware.
I.e. it can resolv many hostnames concurrently.
It is possible to lookup various resources of DNS using DNS module directly.
== example
Resolv.getaddress("www.ruby-lang.org")
Resolv.getname("210.251.121.214").to_s
Resolv::DNS.new.getresources("www.ruby-lang.org", Resolv::DNS::Resource::IN::A).collect {|r| r.address}
Resolv::DNS.new.getresources("ruby-lang.org", Resolv::DNS::Resource::IN::MX).collect {|r| [r.exchange.to_s, r.preference]}
== Resolv module
=== module methods
--- Resolv.getaddress(name)
--- Resolv.getaddresses(name)
--- Resolv.each_address(name) {|address| ...}
They lookups IP addresses of ((|name|)) which represents a hostname
as a string.
getaddress returns first entry of lookupped addresses.
getaddresses returns lookupped addresses.
each_address iterates over lookupped addresses.
--- Resolv.getname(address)
--- Resolv.getnames(address)
--- Resolv.each_name(address) {|name| ...}
lookups hostnames of ((|address|)) which represents IP address as a string.
getname returns first entry of lookupped names.
getnames returns lookupped names.
each_names iterates over lookupped names.
== Resolv::Hosts class
hostname resolver using /etc/hosts format.
=== class methods
--- Resolv::Hosts.new(hosts='/etc/hosts')
=== methods
--- Resolv::Hosts#getaddress(name)
--- Resolv::Hosts#getaddresses(name)
--- Resolv::Hosts#each_address(name) {|address| ...}
address lookup methods.
--- Resolv::Hosts#getname(address)
--- Resolv::Hosts#getnames(address)
--- Resolv::Hosts#each_name(address) {|name| ...}
hostnames lookup methods.
== Resolv::DNS class
DNS stub resolver.
=== class methods
--- Resolv::DNS.new(resolv_conf='/etc/resolv.conf')
=== methods
--- Resolv::DNS#getaddress(name)
--- Resolv::DNS#getaddresses(name)
--- Resolv::DNS#each_address(name) {|address| ...}
address lookup methods.
((|name|)) must be a instance of Resolv::Name or String. Lookupped
address is represented as an instance of Resolv::IPv4 or Resolv::IPv6.
--- Resolv::DNS#getname(address)
--- Resolv::DNS#getnames(address)
--- Resolv::DNS#each_name(address) {|name| ...}
hostnames lookup methods.
((|address|)) must be a instance of Resolv::IPv4, Resolv::IPv6 or String.
Lookupped name is represented as an instance of Resolv::Name.
--- Resolv::DNS#getresource(name, typeclass)
--- Resolv::DNS#getresources(name, typeclass)
--- Resolv::DNS#each_resources(name, typeclass) {|resource| ...}
They lookup DNS resources of ((|name|)).
((|name|)) must be a instance of Resolv::Name or String.
((|typeclass|)) should be one of follows:
* Resolv::DNS::Resource::IN::ANY
* Resolv::DNS::Resource::IN::NS
* Resolv::DNS::Resource::IN::CNAME
* Resolv::DNS::Resource::IN::SOA
* Resolv::DNS::Resource::IN::HINFO
* Resolv::DNS::Resource::IN::MINFO
* Resolv::DNS::Resource::IN::MX
* Resolv::DNS::Resource::IN::TXT
* Resolv::DNS::Resource::IN::ANY
* Resolv::DNS::Resource::IN::A
* Resolv::DNS::Resource::IN::WKS
* Resolv::DNS::Resource::IN::PTR
* Resolv::DNS::Resource::IN::AAAA
Lookupped resource is represented as an instance of (a subclass of)
Resolv::DNS::Resource.
== Resolv::DNS::Resource::IN::NS class
--- name
== Resolv::DNS::Resource::IN::CNAME class
--- name
== Resolv::DNS::Resource::IN::SOA class
--- mname
--- rname
--- serial
--- refresh
--- retry
--- expire
--- minimum
== Resolv::DNS::Resource::IN::HINFO class
--- cpu
--- os
== Resolv::DNS::Resource::IN::MINFO class
--- rmailbx
--- emailbx
== Resolv::DNS::Resource::IN::MX class
--- preference
--- exchange
== Resolv::DNS::Resource::IN::TXT class
--- data
== Resolv::DNS::Resource::IN::A class
--- address
== Resolv::DNS::Resource::IN::WKS class
--- address
--- protocol
--- bitmap
== Resolv::DNS::Resource::IN::PTR class
--- name
== Resolv::DNS::Resource::IN::AAAA class
--- address
== Resolv::DNS::Name class
=== class methods
--- Resolv::DNS::Name.create(name)
=== methods
--- Resolv::DNS::Name#to_s
== Resolv::DNS::Resource class
== Resolv::IPv4 class
=== class methods
--- Resolv::IPv4.create(address)
=== methods
--- Resolv::IPv4#to_s
--- Resolv::IPv4#to_name
=== constants
--- Resolv::IPv4::Regex
regular expression for IPv4 address.
== Resolv::IPv6 class
=== class methods
--- Resolv::IPv6.create(address)
=== methods
--- Resolv::IPv6#to_s
--- Resolv::IPv6#to_name
=== constants
--- Resolv::IPv6::Regex
regular expression for IPv6 address.
== Bugs
NIS is not supported.
=end
require 'socket'
require 'fcntl'
require 'timeout'
@ -8,35 +181,76 @@ class Resolv
DefaultResolver.getaddress(name)
end
def self.getaddresses(name)
DefaultResolver.getaddresses(name)
end
def self.each_address(name, &block)
DefaultResolver.each_address(name, &block)
end
def self.getname(address)
DefaultResolver.getname(address)
end
def self.getnames(address)
DefaultResolver.getnames(address)
end
def self.each_name(address, &proc)
DefaultResolver.each_name(address, &proc)
end
def initialize(resolvers=[Hosts.new, DNS.new])
@resolvers = resolvers
end
def getaddress(name)
return name if AddressRegex =~ name
rs = @resolvers.dup
begin
r = rs.shift
return r.getaddress(name)
rescue ResolvError
retry unless rs.empty?
raise
each_address(name) {|address| return address}
raise ResolvError.new("no address for #{name}")
end
def getaddresses(name)
ret = []
each_address(name) {|address| ret << address}
return ret
end
def each_address(name)
if AddressRegex =~ name
yield name
return
end
yielded = false
@resolvers.each {|r|
r.each_address(name) {|address|
yield address.to_s
yielded = true
}
return if yielded
}
end
def getname(address)
rs = @resolvers.dup
begin
r = rs.shift
return r.getname(address)
rescue ResolvError
retry unless rs.empty?
raise
end
each_name(address) {|name| return name}
raise ResolvError.new("no name for #{address}")
end
def getnames(address)
ret = []
each_name(address) {|name| ret << name}
return ret
end
def each_name(address)
yielded = false
@resolvers.each {|r|
r.each_name(address) {|name|
yield name.to_s
yielded = true
}
return if yielded
}
end
class ResolvError < StandardError
@ -79,20 +293,38 @@ class Resolv
end
def getaddress(name)
each_address(name) {|address| return address}
raise ResolvError.new("#{@filename} has no name: #{name}")
end
def getaddresses(name)
ret = []
each_address(name) {|address| ret << address}
return ret
end
def each_address(name, &proc)
lazy_initialize
if @name2addr.include?(name)
return @name2addr[name][0]
else
raise ResolvError.new("#{@filename} has no name: #{name}")
@name2addr[name].each(&proc)
end
end
def getname(address)
each_name(address) {|name| return name}
raise ResolvError.new("#{@filename} has no address: #{address}")
end
def getnames(address)
ret = []
each_name(address) {|name| ret << name}
return ret
end
def each_name(address, &proc)
lazy_initialize
if @addr2name.include?(address)
return @addr2name[address][0]
else
raise ResolvError.new("#{@filename} has no address: #{address}")
@addr2name[address].each(&proc)
end
end
end
@ -127,10 +359,32 @@ class Resolv
end
def getaddress(name)
return getresource(name, Resource::IN::A).address
each_address(name) {|address| return address}
raise ResolvError.new("DNS result has no information for #{name}")
end
def getaddresses(name)
ret = []
each_address(name) {|address| ret << address}
return ret
end
def each_address(name)
each_resources(name, Resource::IN::A) {|resource| yield resource.address}
end
def getname(address)
each_name(address) {|name| return name}
raise ResolvError.new("DNS result has no information for #{address}")
end
def getnames(address)
ret = []
each_name(address) {|name| ret << name}
return ret
end
def each_name(address)
case address
when Name
ptr = address
@ -141,10 +395,21 @@ class Resolv
else
raise ResolvError.new("cannot interpret as address: #{address}")
end
return getresource(ptr, Resource::IN::PTR).name
each_resources(ptr, Resource::IN::PTR) {|resource| yield resource.name}
end
def getresource(name, typeclass)
each_resources(name, typeclass) {|resource| return resource}
raise ResolvError.new("DNS result has no information for #{name}")
end
def getresources(name, typeclass)
ret = []
each_resources(name, typeclass) {|resource| ret << resource}
return ret
end
def each_resources(name, typeclass, &proc)
lazy_initialize
q = Queue.new
senders = {}
@ -162,7 +427,8 @@ class Resolv
timeout(tout) { reply, reply_name = q.pop }
case reply.rcode
when RCode::NoError
return extract_resource(reply, reply_name, typeclass)
extract_resources(reply, reply_name, typeclass, &proc)
return
when RCode::NXDomain
raise Config::NXDomain.new(reply_name)
else
@ -174,27 +440,35 @@ class Resolv
end
end
def extract_resource(msg, name, typeclass)
def extract_resources(msg, name, typeclass)
if typeclass < Resource::ANY
n0 = Name.create(name)
msg.each_answer {|n, ttl, data|
yield data if n0 == n
}
end
yielded = false
n0 = Name.create(name)
msg.each_answer {|n, ttl, data|
if n0 == n
case data
when typeclass
return data
yield data
yielded = true
when Resource::CNAME
n0 = data.name
end
end
}
return if yielded
msg.each_answer {|n, ttl, data|
if n0 == n
case data
when typeclass
return data
yield data
end
end
}
raise ResolvError.new("DNS result has no information for #{name}")
end
class Requester
@ -551,6 +825,10 @@ class Resolv
return @string
end
def inspect
return "#<#{self.class} #{self.to_s}>"
end
def ==(other)
return @downcase == other.downcase
end
@ -1101,7 +1379,7 @@ class Resolv
end
def self.decode_rdata(msg)
preference = msg.get_unpack('n')
preference, = msg.get_unpack('n')
exchange = msg.get_name
return self.new(preference, exchange)
end
@ -1180,7 +1458,7 @@ class Resolv
def self.decode_rdata(msg)
address = IPv4.new(msg.get_bytes(4))
protocol = msg.get_unpack("n")
protocol, = msg.get_unpack("n")
bitmap = msg.get_bytes
return self.new(address, protocol, bitmap)
end
@ -1239,6 +1517,10 @@ class Resolv
return sprintf("%d.%d.%d.%d", *@address.unpack("CCCC"))
end
def inspect
return "#<#{self.class} #{self.to_s}>"
end
def to_name
return DNS::Name.new(
@address.unpack("CCCC").reverse + ['in-addr', 'arpa'])
@ -1326,6 +1608,10 @@ class Resolv
return address
end
def inspect
return "#<#{self.class} #{self.to_s}>"
end
def to_name
return DNS::Name.new(
@address.unpack("H32")[0].split(//).reverse + ['ip6', 'int'])
@ -1345,5 +1631,5 @@ class Resolv
end
DefaultResolver = self.new
AddressRegex = /(?:#{IPv4::Regex.source})|(?:#{IPv6::Regex})/
AddressRegex = /(?:#{IPv4::Regex.source})|(?:#{IPv6::Regex.source})/
end

6
numeric.c
View file

@ -1313,13 +1313,15 @@ fix_aref(fix, idx)
long val = FIX2LONG(fix);
if (TYPE(idx) == T_BIGNUM) {
if (val >= 0) return INT2FIX(0);
if (!RBIGNUM(idx)->sign || val >= 0)
return INT2FIX(0);
return INT2FIX(1);
}
else {
int i = NUM2INT(idx);
if (i < 0 || sizeof(VALUE)*CHAR_BIT-1 < i) {
if (i < 0) return INT2FIX(0);
if (sizeof(VALUE)*CHAR_BIT-1 < i) {
if (val < 0) return INT2FIX(1);
return INT2FIX(0);
}

4
version.h
View file

@ -1,4 +1,4 @@
#define RUBY_VERSION "1.7.1"
#define RUBY_RELEASE_DATE "2001-10-31"
#define RUBY_RELEASE_DATE "2001-11-01"
#define RUBY_VERSION_CODE 171
#define RUBY_RELEASE_CODE 20011031
#define RUBY_RELEASE_CODE 20011101