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bf_nbio.c

Absolute File Name:/home/opencoverage/opencoverage/guest-scripts/libressl/src/crypto/bio/bf_nbio.c
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1-
2-
3-
4-
5-
6static int nbiof_write(BIO *h, const char *buf, int num);-
7static int nbiof_read(BIO *h, char *buf, int size);-
8static int nbiof_puts(BIO *h, const char *str);-
9static int nbiof_gets(BIO *h, char *str, int size);-
10static long nbiof_ctrl(BIO *h, int cmd, long arg1, void *arg2);-
11static int nbiof_new(BIO *h);-
12static int nbiof_free(BIO *data);-
13static long nbiof_callback_ctrl(BIO *h, int cmd, bio_info_cb *fp);-
14-
15typedef struct nbio_test_st {-
16-
17 int lrn;-
18 int lwn;-
19} NBIO_TEST;-
20-
21static const BIO_METHOD methods_nbiof = {-
22 .type = (16|0x0200),-
23 .name = "non-blocking IO test filter",-
24 .bwrite = nbiof_write,-
25 .bread = nbiof_read,-
26 .bputs = nbiof_puts,-
27 .bgets = nbiof_gets,-
28 .ctrl = nbiof_ctrl,-
29 .create = nbiof_new,-
30 .destroy = nbiof_free,-
31 .callback_ctrl = nbiof_callback_ctrl-
32};-
33-
34const BIO_METHOD *-
35BIO_f_nbio_test(void)-
36{-
37 return
never executed: return (&methods_nbiof);
 (&methods_nbiof);
never executed: return (&methods_nbiof);
0
38}-
39-
40static int-
41nbiof_new(BIO *bi)-
42{-
43 NBIO_TEST *nt;-
44-
45 if (!(nt = malloc(sizeof(NBIO_TEST)))
!(nt = malloc(...f(NBIO_TEST)))Description
TRUEnever evaluated
FALSEnever evaluated
)		0
46 return
never executed: return (0);
 (0);
never executed: return (0);
0
47 nt->lrn = -1;-
48 nt->lwn = -1;-
49 bi->ptr = (char *)nt;-
50 bi->init = 1;-
51 bi->flags = 0;-
52 return
never executed: return (1);
 (1);
never executed: return (1);
0
53}-
54-
55static int-
56nbiof_free(BIO *a)-
57{-
58 if (a ==
a == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
59 ((void *)0)
a == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
60 )-
61 return
never executed: return (0);
 (0);
never executed: return (0);
0
62 free(a->ptr);-
63 a->ptr = -
64 ((void *)0)-
65 ;-
66 a->init = 0;-
67 a->flags = 0;-
68 return
never executed: return (1);
 (1);
never executed: return (1);
0
69}-
70-
71static int-
72nbiof_read(BIO *b, char *out, int outl)-
73{-
74 int ret = 0;-
75 int num;-
76 unsigned char n;-
77-
78 if (out ==
out == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
79 ((void *)0)
out == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
80 )-
81 return
never executed: return (0);
 (0);
never executed: return (0);
0
82 if (b->next_bio ==
b->next_bio == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
83 ((void *)0)
b->next_bio == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
84 )-
85 return
never executed: return (0);
 (0);
never executed: return (0);
0
86-
87 BIO_clear_flags(b, ((0x01|0x02|0x04)|0x08));-
88-
89 arc4random_buf(&n, 1);-
90 num = (n & 0x07);-
91-
92 if (outl > num
outl > numDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
93 outl = num;
never executed: outl = num;
0
94-
95 if (num == 0
num == 0Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
96 ret = -1;-
97 BIO_set_flags(b, (0x01|0x08));-
98 }
never executed: end of block
 else {		0
99 ret = BIO_read(b->next_bio, out, outl);-
100 if (ret < 0
ret < 0Description
TRUEnever evaluated
FALSEnever evaluated
)		0
101 BIO_copy_next_retry(b);
never executed: BIO_copy_next_retry(b);
0
102 }
never executed: end of block
0
103 return
never executed: return (ret);
 (ret);
never executed: return (ret);
0
104}-
105-
106static int-
107nbiof_write(BIO *b, const char *in, int inl)-
108{-
109 NBIO_TEST *nt;-
110 int ret = 0;-
111 int num;-
112 unsigned char n;-
113-
114 if ((
(in == ((void *)0) )Description
TRUEnever evaluated
FALSEnever evaluated
in ==
(in == ((void *)0) )Description
TRUEnever evaluated
FALSEnever evaluated
0
115 ((void *)0)
(in == ((void *)0) )Description
TRUEnever evaluated
FALSEnever evaluated
0
116 )
(in == ((void *)0) )Description
TRUEnever evaluated
FALSEnever evaluated
 || (
(inl <= 0)Description
TRUEnever evaluated
FALSEnever evaluated
inl <= 0)
(inl <= 0)Description
TRUEnever evaluated
FALSEnever evaluated
)		0
117 return
never executed: return (0);
 (0);
never executed: return (0);
0
118 if (b->next_bio ==
b->next_bio == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
119 ((void *)0)
b->next_bio == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
120 )-
121 return
never executed: return (0);
 (0);
never executed: return (0);
0
122 nt = (NBIO_TEST *)b->ptr;-
123-
124 BIO_clear_flags(b, ((0x01|0x02|0x04)|0x08));-
125-
126 if (nt->lwn > 0
nt->lwn > 0Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
127 num = nt->lwn;-
128 nt->lwn = 0;-
129 }
never executed: end of block
 else {		0
130 arc4random_buf(&n, 1);-
131 num = (n&7);-
132 }
never executed: end of block
0
133-
134 if (inl > num
inl > numDescription
TRUEnever evaluated
FALSEnever evaluated
)		0
135 inl = num;
never executed: inl = num;
0
136-
137 if (num == 0
num == 0Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
138 ret = -1;-
139 BIO_set_flags(b, (0x02|0x08));-
140 }
never executed: end of block
 else {		0
141 ret = BIO_write(b->next_bio, in, inl);-
142 if (ret < 0
ret < 0Description
TRUEnever evaluated
FALSEnever evaluated
) {		0
143 BIO_copy_next_retry(b);-
144 nt->lwn = inl;-
145 }
never executed: end of block
0
146 }
never executed: end of block
0
147 return
never executed: return (ret);
 (ret);
never executed: return (ret);
0
148}-
149-
150static long-
151nbiof_ctrl(BIO *b, int cmd, long num, void *ptr)-
152{-
153 long ret;-
154-
155 if (b->next_bio ==
b->next_bio == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
156 ((void *)0)
b->next_bio == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
157 )-
158 return
never executed: return (0);
 (0);
never executed: return (0);
0
159 switch (cmd) {-
160 case
never executed: case 101:
 101:
never executed: case 101:
0
161 BIO_clear_flags(b, ((0x01|0x02|0x04)|0x08));-
162 ret = BIO_ctrl(b->next_bio, cmd, num, ptr);-
163 BIO_copy_next_retry(b);-
164 break;
never executed: break;
0
165 case
never executed: case 12:
 12:
never executed: case 12:
0
166 ret = 0L;-
167 break;
never executed: break;
0
168 default
never executed: default:
:
never executed: default:
0
169 ret = BIO_ctrl(b->next_bio, cmd, num, ptr);-
170 break;
never executed: break;
0
171 }-
172 return
never executed: return (ret);
 (ret);
never executed: return (ret);
0
173}-
174-
175static long-
176nbiof_callback_ctrl(BIO *b, int cmd, bio_info_cb *fp)-
177{-
178 long ret = 1;-
179-
180 if (b->next_bio ==
b->next_bio == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
181 ((void *)0)
b->next_bio == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
182 )-
183 return
never executed: return (0);
 (0);
never executed: return (0);
0
184 switch (cmd) {-
185 default
never executed: default:
:
never executed: default:
0
186 ret = BIO_callback_ctrl(b->next_bio, cmd, fp);-
187 break;
never executed: break;
0
188 }-
189 return
never executed: return (ret);
 (ret);
never executed: return (ret);
0
190}-
191-
192static int-
193nbiof_gets(BIO *bp, char *buf, int size)-
194{-
195 if (bp->next_bio ==
bp->next_bio == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
196 ((void *)0)
bp->next_bio == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
197 )-
198 return
never executed: return (0);
 (0);
never executed: return (0);
0
199 return
never executed: return (BIO_gets(bp->next_bio, buf, size));
 (BIO_gets(bp->next_bio, buf, size));
never executed: return (BIO_gets(bp->next_bio, buf, size));
0
200}-
201-
202static int-
203nbiof_puts(BIO *bp, const char *str)-
204{-
205 if (bp->next_bio ==
bp->next_bio == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
206 ((void *)0)
bp->next_bio == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
207 )-
208 return
never executed: return (0);
 (0);
never executed: return (0);
0
209 return
never executed: return (BIO_puts(bp->next_bio, str));
 (BIO_puts(bp->next_bio, str));
never executed: return (BIO_puts(bp->next_bio, str));
0
210}-
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