1
2
3
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
53
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
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
|
require_relative 'test_base'
require_relative '../ruby/envutil'
module DL
class TestCPtr < TestBase
def test_cptr_to_int
null = DL::NULL
assert_equal(null.to_i, null.to_int)
end
def test_malloc_free_func_int
free = CFunc.new(DL::RUBY_FREE, TYPE_VOID, 'free')
ptr = CPtr.malloc(10, free.to_i)
assert_equal 10, ptr.size
assert_equal free.to_i, ptr.free.to_i
end
def test_malloc_free_func
free = CFunc.new(DL::RUBY_FREE, TYPE_VOID, 'free')
ptr = CPtr.malloc(10, free)
assert_equal 10, ptr.size
assert_equal free.to_i, ptr.free.to_i
end
def test_to_str
str = "hello world"
ptr = CPtr[str]
assert_equal 3, ptr.to_str(3).length
assert_equal str, ptr.to_str
ptr[5] = 0
assert_equal "hello\0world", ptr.to_str
end
def test_to_s
str = "hello world"
ptr = CPtr[str]
assert_equal 3, ptr.to_s(3).length
assert_equal str, ptr.to_s
ptr[5] = 0
assert_equal 'hello', ptr.to_s
end
def test_minus
str = "hello world"
ptr = CPtr[str]
assert_equal ptr.to_s, (ptr + 3 - 3).to_s
end
# TODO: what if the pointer size is 0? raise an exception? do we care?
def test_plus
str = "hello world"
ptr = CPtr[str]
new_str = ptr + 3
assert_equal 'lo world', new_str.to_s
end
def test_inspect
ptr = CPtr.new(0)
inspect = ptr.inspect
assert_match(/size=#{ptr.size}/, inspect)
assert_match(/free=#{sprintf("%#x", ptr.free.to_i)}/, inspect)
assert_match(/ptr=#{sprintf("%#x", ptr.to_i)}/, inspect)
end
def test_to_ptr_string
str = "hello world"
ptr = CPtr[str]
assert ptr.tainted?, 'pointer should be tainted'
assert_equal str.length, ptr.size
assert_equal 'hello', ptr[0,5]
end
def test_to_ptr_io
buf = CPtr.malloc(10)
File.open(__FILE__, 'r') do |f|
ptr = CPtr.to_ptr f
fread = CFunc.new(@libc['fread'], TYPE_VOID, 'fread')
fread.call([buf.to_i, DL::SIZEOF_CHAR, buf.size - 1, ptr.to_i])
end
File.open(__FILE__, 'r') do |f|
assert_equal f.read(9), buf.to_s
end
end
def test_to_ptr_with_ptr
ptr = CPtr.new 0
ptr2 = CPtr.to_ptr Struct.new(:to_ptr).new(ptr)
assert_equal ptr, ptr2
assert_raises(DL::DLError) do
CPtr.to_ptr Struct.new(:to_ptr).new(nil)
end
end
def test_to_ptr_with_num
ptr = CPtr.new 0
assert_equal ptr, CPtr[0]
end
def test_equals
ptr = CPtr.new 0
ptr2 = CPtr.new 0
assert_equal ptr2, ptr
end
def test_not_equals
ptr = CPtr.new 0
assert_not_equal 10, ptr, '10 should not equal the pointer'
end
def test_cmp
ptr = CPtr.new 0
assert_nil(ptr <=> 10, '10 should not be comparable')
end
def test_ref_ptr
ary = [0,1,2,4,5]
addr = CPtr.new(dlwrap(ary))
assert_equal addr.to_i, addr.ref.ptr.to_i
assert_equal addr.to_i, (+ (- addr)).to_i
end
def test_to_value
ary = [0,1,2,4,5]
addr = CPtr.new(dlwrap(ary))
assert_equal ary, addr.to_value
end
def test_free
ptr = CPtr.malloc(4)
assert_nil ptr.free
end
def test_free=
assert_normal_exit(<<-"End", '[ruby-dev:39269]')
require 'dl'
DL::LIBC_SO = #{DL::LIBC_SO.dump}
DL::LIBM_SO = #{DL::LIBM_SO.dump}
include DL
@libc = dlopen(LIBC_SO)
@libm = dlopen(LIBM_SO)
free = CFunc.new(DL::RUBY_FREE, TYPE_VOID, 'free')
ptr = CPtr.malloc(4)
ptr.free = free
free.ptr
ptr.free.ptr
End
free = CFunc.new(DL::RUBY_FREE, TYPE_VOID, 'free')
ptr = CPtr.malloc(4)
ptr.free = free
assert_equal free.ptr, ptr.free.ptr
end
def test_null?
ptr = CPtr.new(0)
assert ptr.null?
end
def test_size
ptr = CPtr.malloc(4)
assert_equal 4, ptr.size
DL.free ptr.to_i
end
def test_size=
ptr = CPtr.malloc(4)
ptr.size = 10
assert_equal 10, ptr.size
DL.free ptr.to_i
end
def test_aref_aset
check = Proc.new{|str,ptr|
assert_equal(str.size(), ptr.size())
assert_equal(str, ptr.to_s())
assert_equal(str[0,2], ptr.to_s(2))
assert_equal(str[0,2], ptr[0,2])
assert_equal(str[1,2], ptr[1,2])
assert_equal(str[1,0], ptr[1,0])
assert_equal(str[0].ord, ptr[0])
assert_equal(str[1].ord, ptr[1])
}
str = 'abc'
ptr = CPtr[str]
check.call(str, ptr)
str[0] = "c"
assert_equal 'c'.ord, ptr[0] = "c".ord
check.call(str, ptr)
str[0,2] = "aa"
assert_equal 'aa', ptr[0,2] = "aa"
check.call(str, ptr)
ptr2 = CPtr['cdeeee']
str[0,2] = "cd"
assert_equal ptr2, ptr[0,2] = ptr2
check.call(str, ptr)
ptr3 = CPtr['vvvv']
str[0,2] = "vv"
assert_equal ptr3.to_i, ptr[0,2] = ptr3.to_i
check.call(str, ptr)
end
def test_null_pointer
nullpo = CPtr.new(0)
assert_raise(DLError) {nullpo[0]}
assert_raise(DLError) {nullpo[0] = 1}
end
end
end
|
