OpenCoverage

bf_nbio.c

Absolute File Name:/home/opencoverage/opencoverage/guest-scripts/openssl/src/crypto/bio/bf_nbio.c
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1/*-
2 * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.-
3 *-
4 * Licensed under the OpenSSL license (the "License"). You may not use-
5 * this file except in compliance with the License. You can obtain a copy-
6 * in the file LICENSE in the source distribution or at-
7 * https://www.openssl.org/source/license.html-
8 */-
9-
10#include <stdio.h>-
11#include <errno.h>-
12#include "bio_lcl.h"-
13#include "internal/cryptlib.h"-
14#include <openssl/rand.h>-
15-
16/*-
17 * BIO_put and BIO_get both add to the digest, BIO_gets returns the digest-
18 */-
19-
20static int nbiof_write(BIO *h, const char *buf, int num);-
21static int nbiof_read(BIO *h, char *buf, int size);-
22static int nbiof_puts(BIO *h, const char *str);-
23static int nbiof_gets(BIO *h, char *str, int size);-
24static long nbiof_ctrl(BIO *h, int cmd, long arg1, void *arg2);-
25static int nbiof_new(BIO *h);-
26static int nbiof_free(BIO *data);-
27static long nbiof_callback_ctrl(BIO *h, int cmd, BIO_info_cb *fp);-
28typedef struct nbio_test_st {-
29 /* only set if we sent a 'should retry' error */-
30 int lrn;-
31 int lwn;-
32} NBIO_TEST;-
33-
34static const BIO_METHOD methods_nbiof = {-
35 BIO_TYPE_NBIO_TEST,-
36 "non-blocking IO test filter",-
37 /* TODO: Convert to new style write function */-
38 bwrite_conv,-
39 nbiof_write,-
40 /* TODO: Convert to new style read function */-
41 bread_conv,-
42 nbiof_read,-
43 nbiof_puts,-
44 nbiof_gets,-
45 nbiof_ctrl,-
46 nbiof_new,-
47 nbiof_free,-
48 nbiof_callback_ctrl,-
49};-
50-
51const BIO_METHOD *BIO_f_nbio_test(void)-
52{-
53 return &methods_nbiof;
never executed: return &methods_nbiof;
0
54}-
55-
56static int nbiof_new(BIO *bi)-
57{-
58 NBIO_TEST *nt;-
59-
60 if ((nt = OPENSSL_zalloc(sizeof(*nt))) == NULL) {
(nt = CRYPTO_z...== ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
61 BIOerr(BIO_F_NBIOF_NEW, ERR_R_MALLOC_FAILURE);-
62 return 0;
never executed: return 0;
0
63 }-
64 nt->lrn = -1;-
65 nt->lwn = -1;-
66 bi->ptr = (char *)nt;-
67 bi->init = 1;-
68 return 1;
never executed: return 1;
0
69}-
70-
71static int nbiof_free(BIO *a)-
72{-
73 if (a == NULL)
a == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
74 return 0;
never executed: return 0;
0
75 OPENSSL_free(a->ptr);-
76 a->ptr = NULL;-
77 a->init = 0;-
78 a->flags = 0;-
79 return 1;
never executed: return 1;
0
80}-
81-
82static int nbiof_read(BIO *b, char *out, int outl)-
83{-
84 int ret = 0;-
85 int num;-
86 unsigned char n;-
87-
88 if (out == NULL)
out == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
89 return 0;
never executed: return 0;
0
90 if (b->next_bio == NULL)
b->next_bio == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
91 return 0;
never executed: return 0;
0
92-
93 BIO_clear_retry_flags(b);-
94 if (RAND_priv_bytes(&n, 1) <= 0)
RAND_priv_bytes(&n, 1) <= 0Description
TRUEnever evaluated
FALSEnever evaluated
0
95 return -1;
never executed: return -1;
0
96 num = (n & 0x07);-
97-
98 if (outl > num)
outl > numDescription
TRUEnever evaluated
FALSEnever evaluated
0
99 outl = num;
never executed: outl = num;
0
100-
101 if (num == 0) {
num == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
102 ret = -1;-
103 BIO_set_retry_read(b);-
104 } else {
never executed: end of block
0
105 ret = BIO_read(b->next_bio, out, outl);-
106 if (ret < 0)
ret < 0Description
TRUEnever evaluated
FALSEnever evaluated
0
107 BIO_copy_next_retry(b);
never executed: BIO_copy_next_retry(b);
0
108 }
never executed: end of block
0
109 return ret;
never executed: return ret;
0
110}-
111-
112static int nbiof_write(BIO *b, const char *in, int inl)-
113{-
114 NBIO_TEST *nt;-
115 int ret = 0;-
116 int num;-
117 unsigned char n;-
118-
119 if ((in == NULL) || (inl <= 0))
(in == ((void *)0) )Description
TRUEnever evaluated
FALSEnever evaluated
(inl <= 0)Description
TRUEnever evaluated
FALSEnever evaluated
0
120 return 0;
never executed: return 0;
0
121 if (b->next_bio == NULL)
b->next_bio == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
122 return 0;
never executed: return 0;
0
123 nt = (NBIO_TEST *)b->ptr;-
124-
125 BIO_clear_retry_flags(b);-
126-
127 if (nt->lwn > 0) {
nt->lwn > 0Description
TRUEnever evaluated
FALSEnever evaluated
0
128 num = nt->lwn;-
129 nt->lwn = 0;-
130 } else {
never executed: end of block
0
131 if (RAND_priv_bytes(&n, 1) <= 0)
RAND_priv_bytes(&n, 1) <= 0Description
TRUEnever evaluated
FALSEnever evaluated
0
132 return -1;
never executed: return -1;
0
133 num = (n & 7);-
134 }
never executed: end of block
0
135-
136 if (inl > num)
inl > numDescription
TRUEnever evaluated
FALSEnever evaluated
0
137 inl = num;
never executed: inl = num;
0
138-
139 if (num == 0) {
num == 0Description
TRUEnever evaluated
FALSEnever evaluated
0
140 ret = -1;-
141 BIO_set_retry_write(b);-
142 } else {
never executed: end of block
0
143 ret = BIO_write(b->next_bio, in, inl);-
144 if (ret < 0) {
ret < 0Description
TRUEnever evaluated
FALSEnever evaluated
0
145 BIO_copy_next_retry(b);-
146 nt->lwn = inl;-
147 }
never executed: end of block
0
148 }
never executed: end of block
0
149 return ret;
never executed: return ret;
0
150}-
151-
152static long nbiof_ctrl(BIO *b, int cmd, long num, void *ptr)-
153{-
154 long ret;-
155-
156 if (b->next_bio == NULL)
b->next_bio == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
157 return 0;
never executed: return 0;
0
158 switch (cmd) {-
159 case BIO_C_DO_STATE_MACHINE:
never executed: case 101:
0
160 BIO_clear_retry_flags(b);-
161 ret = BIO_ctrl(b->next_bio, cmd, num, ptr);-
162 BIO_copy_next_retry(b);-
163 break;
never executed: break;
0
164 case BIO_CTRL_DUP:
never executed: case 12:
0
165 ret = 0L;-
166 break;
never executed: break;
0
167 default:
never executed: default:
0
168 ret = BIO_ctrl(b->next_bio, cmd, num, ptr);-
169 break;
never executed: break;
0
170 }-
171 return ret;
never executed: return ret;
0
172}-
173-
174static long nbiof_callback_ctrl(BIO *b, int cmd, BIO_info_cb *fp)-
175{-
176 long ret = 1;-
177-
178 if (b->next_bio == NULL)
b->next_bio == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
179 return 0;
never executed: return 0;
0
180 switch (cmd) {-
181 default:
never executed: default:
0
182 ret = BIO_callback_ctrl(b->next_bio, cmd, fp);-
183 break;
never executed: break;
0
184 }-
185 return ret;
never executed: return ret;
0
186}-
187-
188static int nbiof_gets(BIO *bp, char *buf, int size)-
189{-
190 if (bp->next_bio == NULL)
bp->next_bio == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
191 return 0;
never executed: return 0;
0
192 return BIO_gets(bp->next_bio, buf, size);
never executed: return BIO_gets(bp->next_bio, buf, size);
0
193}-
194-
195static int nbiof_puts(BIO *bp, const char *str)-
196{-
197 if (bp->next_bio == NULL)
bp->next_bio == ((void *)0)Description
TRUEnever evaluated
FALSEnever evaluated
0
198 return 0;
never executed: return 0;
0
199 return BIO_puts(bp->next_bio, str);
never executed: return BIO_puts(bp->next_bio, str);
0
200}-
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