Top Level Namespace

Defined Under Namespace

Modules: Digest

Instance Method Summary collapse

Instance Method Details

#Digest(name) ⇒ Object

call-seq:

Digest(name) -> digest_subclass

Returns a Digest subclass by name in a thread-safe manner even when on-demand loading is involved.

require 'digest'

Digest("MD5")
# => Digest::MD5

Digest(:SHA256)
# => Digest::SHA256

Digest(:Foo)
# => LoadError: library not found for class Digest::Foo -- digest/foo



96
97
98
99
100
101
102
103
104
105
106
107
108
109
 
# File 'lib/digest.rb', line 96

def Digest(name)
  const = name.to_sym
  Digest::REQUIRE_MUTEX.synchronize {
    # Ignore autoload's because it is void when we have #const_missing
    Digest.const_missing(const)
  }
rescue LoadError
  # Constants do not necessarily rely on digest/*.
  if Digest.const_defined?(const)
    Digest.const_get(const)
  else
    raise
  end
end

#digest_conf(name, hdr = name, funcs = nil, types = nil) ⇒ Object 



54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
 
# File 'digest_conf.rb', line 54

def digest_conf(name, hdr = name, funcs = nil, types = nil)
  unless with_config("bundled-#{name}")
    cc = with_config("common-digest")
    if cc == true or /\b#{name}\b/ =~ cc
      if File.exist?("#$srcdir/#{name}cc.h") and
        have_header("CommonCrypto/CommonDigest.h")
        $defs << "-D#{name.upcase}_USE_COMMONDIGEST"
        $headers << "#{name}cc.h"
        return :commondigest
      end
    end

    dir_config("openssl")
    pkg_config("openssl")
    require File.expand_path('../../openssl/deprecation', __FILE__)
    if find_openssl_library
      funcs ||= name.upcase
      funcs = Array(funcs)
      types ||= funcs
      hdr = "openssl/#{hdr}.h"
      if funcs.all? {|func| OpenSSL.check_func("#{func}_Transform", hdr)} &&
         types.all? {|type| have_type("#{type}_CTX", hdr)}
        $defs << "-D#{name.upcase}_USE_OPENSSL"
        $headers << "#{name}ossl.h"
        return :ossl
      end
    end
  end
  $objs << "#{name}.#{$OBJEXT}"
  return
end

#find_openssl_library ⇒ Object

Copy from ext/openssl/extconf.rb



4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
 
# File 'digest_conf.rb', line 4

def find_openssl_library
  if $mswin || $mingw
    # required for static OpenSSL libraries
    have_library("gdi32") # OpenSSL <= 1.0.2 (for RAND_screen())
    have_library("crypt32")
  end

  return false unless have_header("openssl/ssl.h")

  ret = have_library("crypto", "CRYPTO_malloc") &&
    have_library("ssl", "SSL_new")
  return ret if ret

  if $mswin
    # OpenSSL >= 1.1.0: libcrypto.lib and libssl.lib.
    if have_library("libcrypto", "CRYPTO_malloc") &&
        have_library("libssl", "SSL_new")
      return true
    end

    # OpenSSL <= 1.0.2: libeay32.lib and ssleay32.lib.
    if have_library("libeay32", "CRYPTO_malloc") &&
        have_library("ssleay32", "SSL_new")
      return true
    end

    # LibreSSL: libcrypto-##.lib and libssl-##.lib, where ## is the ABI version
    # number. We have to find the version number out by scanning libpath.
    libpath = $LIBPATH.dup
    libpath |= ENV["LIB"].split(File::PATH_SEPARATOR)
    libpath.map! { |d| d.tr(File::ALT_SEPARATOR, File::SEPARATOR) }

    ret = [
      ["crypto", "CRYPTO_malloc"],
      ["ssl", "SSL_new"]
    ].all? do |base, func|
      result = false
      libs = ["lib#{base}-[0-9][0-9]", "lib#{base}-[0-9][0-9][0-9]"]
      libs = Dir.glob(libs.map{|l| libpath.map{|d| File.join(d, l + ".*")}}.flatten).map{|path| File.basename(path, ".*")}.uniq
      libs.each do |lib|
        result = have_library(lib, func)
        break if result
      end
      result
    end
    return ret if ret
  end
  return false
end