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Commit | Line | Data |
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b1322259 | 1 | /* |
6738bf14 | 2 | * Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved. |
f334461f | 3 | * |
b1322259 RS |
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 | |
f334461f MC |
8 | */ |
9 | ||
10 | #include "bio_lcl.h" | |
176db6dc | 11 | #include "internal/thread_once.h" |
f334461f | 12 | |
5a7ad1f0 RS |
13 | CRYPTO_RWLOCK *bio_type_lock = NULL; |
14 | static CRYPTO_ONCE bio_type_init = CRYPTO_ONCE_STATIC_INIT; | |
15 | ||
16 | DEFINE_RUN_ONCE_STATIC(do_bio_type_init) | |
17 | { | |
63ab5ea1 | 18 | bio_type_lock = CRYPTO_THREAD_lock_new(); |
5a7ad1f0 RS |
19 | return bio_type_lock != NULL; |
20 | } | |
8b8d963d RS |
21 | |
22 | int BIO_get_new_index() | |
23 | { | |
2f545ae4 | 24 | static CRYPTO_REF_COUNT bio_count = BIO_TYPE_START; |
8b8d963d RS |
25 | int newval; |
26 | ||
5a7ad1f0 RS |
27 | if (!RUN_ONCE(&bio_type_init, do_bio_type_init)) { |
28 | BIOerr(BIO_F_BIO_GET_NEW_INDEX, ERR_R_MALLOC_FAILURE); | |
29 | return -1; | |
30 | } | |
2f545ae4 | 31 | if (!CRYPTO_UP_REF(&bio_count, &newval, bio_type_lock)) |
8b8d963d RS |
32 | return -1; |
33 | return newval; | |
34 | } | |
35 | ||
f334461f MC |
36 | BIO_METHOD *BIO_meth_new(int type, const char *name) |
37 | { | |
38 | BIO_METHOD *biom = OPENSSL_zalloc(sizeof(BIO_METHOD)); | |
39 | ||
6dbe4dc4 RS |
40 | if (biom == NULL |
41 | || (biom->name = OPENSSL_strdup(name)) == NULL) { | |
42 | OPENSSL_free(biom); | |
43 | BIOerr(BIO_F_BIO_METH_NEW, ERR_R_MALLOC_FAILURE); | |
44 | return NULL; | |
f334461f | 45 | } |
6dbe4dc4 | 46 | biom->type = type; |
f334461f MC |
47 | return biom; |
48 | } | |
49 | ||
50 | void BIO_meth_free(BIO_METHOD *biom) | |
51 | { | |
6dbe4dc4 RS |
52 | if (biom != NULL) { |
53 | OPENSSL_free(biom->name); | |
54 | OPENSSL_free(biom); | |
55 | } | |
f334461f MC |
56 | } |
57 | ||
58 | int (*BIO_meth_get_write(BIO_METHOD *biom)) (BIO *, const char *, int) | |
3befffa3 MC |
59 | { |
60 | return biom->bwrite_old; | |
61 | } | |
62 | ||
63 | int (*BIO_meth_get_write_ex(BIO_METHOD *biom)) (BIO *, const char *, size_t, | |
64 | size_t *) | |
f334461f MC |
65 | { |
66 | return biom->bwrite; | |
67 | } | |
68 | ||
3befffa3 | 69 | /* Conversion for old style bwrite to new style */ |
42c60460 | 70 | int bwrite_conv(BIO *bio, const char *data, size_t datal, size_t *written) |
3befffa3 MC |
71 | { |
72 | int ret; | |
73 | ||
42c60460 MC |
74 | if (datal > INT_MAX) |
75 | datal = INT_MAX; | |
3befffa3 | 76 | |
42c60460 | 77 | ret = bio->method->bwrite_old(bio, data, (int)datal); |
3befffa3 MC |
78 | |
79 | if (ret <= 0) { | |
80 | *written = 0; | |
81 | return ret; | |
82 | } | |
83 | ||
84 | *written = (size_t)ret; | |
85 | ||
86 | return 1; | |
87 | } | |
88 | ||
f334461f | 89 | int BIO_meth_set_write(BIO_METHOD *biom, |
adb4076a | 90 | int (*bwrite) (BIO *, const char *, int)) |
f334461f | 91 | { |
3befffa3 MC |
92 | biom->bwrite_old = bwrite; |
93 | biom->bwrite = bwrite_conv; | |
94 | return 1; | |
95 | } | |
96 | ||
97 | int BIO_meth_set_write_ex(BIO_METHOD *biom, | |
98 | int (*bwrite) (BIO *, const char *, size_t, size_t *)) | |
99 | { | |
100 | biom->bwrite_old = NULL; | |
adb4076a | 101 | biom->bwrite = bwrite; |
f334461f MC |
102 | return 1; |
103 | } | |
104 | ||
a146ae55 | 105 | int (*BIO_meth_get_read(BIO_METHOD *biom)) (BIO *, char *, int) |
d07aee2c MC |
106 | { |
107 | return biom->bread_old; | |
108 | } | |
109 | ||
110 | int (*BIO_meth_get_read_ex(BIO_METHOD *biom)) (BIO *, char *, size_t, size_t *) | |
f334461f MC |
111 | { |
112 | return biom->bread; | |
113 | } | |
114 | ||
d07aee2c | 115 | /* Conversion for old style bread to new style */ |
d62bf89c | 116 | int bread_conv(BIO *bio, char *data, size_t datal, size_t *readbytes) |
d07aee2c MC |
117 | { |
118 | int ret; | |
119 | ||
42c60460 MC |
120 | if (datal > INT_MAX) |
121 | datal = INT_MAX; | |
d07aee2c | 122 | |
42c60460 | 123 | ret = bio->method->bread_old(bio, data, (int)datal); |
d07aee2c MC |
124 | |
125 | if (ret <= 0) { | |
d62bf89c | 126 | *readbytes = 0; |
d07aee2c MC |
127 | return ret; |
128 | } | |
129 | ||
d62bf89c | 130 | *readbytes = (size_t)ret; |
d07aee2c MC |
131 | |
132 | return 1; | |
133 | } | |
134 | ||
f334461f | 135 | int BIO_meth_set_read(BIO_METHOD *biom, |
adb4076a | 136 | int (*bread) (BIO *, char *, int)) |
d07aee2c MC |
137 | { |
138 | biom->bread_old = bread; | |
139 | biom->bread = bread_conv; | |
140 | return 1; | |
141 | } | |
142 | ||
143 | int BIO_meth_set_read_ex(BIO_METHOD *biom, | |
144 | int (*bread) (BIO *, char *, size_t, size_t *)) | |
f334461f | 145 | { |
3befffa3 | 146 | biom->bread_old = NULL; |
adb4076a | 147 | biom->bread = bread; |
f334461f MC |
148 | return 1; |
149 | } | |
150 | ||
151 | int (*BIO_meth_get_puts(BIO_METHOD *biom)) (BIO *, const char *) | |
152 | { | |
153 | return biom->bputs; | |
154 | } | |
155 | ||
156 | int BIO_meth_set_puts(BIO_METHOD *biom, | |
adb4076a | 157 | int (*bputs) (BIO *, const char *)) |
f334461f | 158 | { |
adb4076a | 159 | biom->bputs = bputs; |
f334461f MC |
160 | return 1; |
161 | } | |
162 | ||
163 | int (*BIO_meth_get_gets(BIO_METHOD *biom)) (BIO *, char *, int) | |
164 | { | |
a146ae55 | 165 | return biom->bgets; |
f334461f MC |
166 | } |
167 | ||
168 | int BIO_meth_set_gets(BIO_METHOD *biom, | |
adb4076a | 169 | int (*bgets) (BIO *, char *, int)) |
f334461f | 170 | { |
adb4076a | 171 | biom->bgets = bgets; |
f334461f MC |
172 | return 1; |
173 | } | |
174 | ||
175 | long (*BIO_meth_get_ctrl(BIO_METHOD *biom)) (BIO *, int, long, void *) | |
176 | { | |
177 | return biom->ctrl; | |
178 | } | |
179 | ||
180 | int BIO_meth_set_ctrl(BIO_METHOD *biom, | |
181 | long (*ctrl) (BIO *, int, long, void *)) | |
182 | { | |
183 | biom->ctrl = ctrl; | |
184 | return 1; | |
185 | } | |
186 | ||
a146ae55 | 187 | int (*BIO_meth_get_create(BIO_METHOD *biom)) (BIO *) |
f334461f MC |
188 | { |
189 | return biom->create; | |
190 | } | |
191 | ||
192 | int BIO_meth_set_create(BIO_METHOD *biom, int (*create) (BIO *)) | |
193 | { | |
194 | biom->create = create; | |
195 | return 1; | |
196 | } | |
197 | ||
198 | int (*BIO_meth_get_destroy(BIO_METHOD *biom)) (BIO *) | |
199 | { | |
200 | return biom->destroy; | |
201 | } | |
202 | ||
203 | int BIO_meth_set_destroy(BIO_METHOD *biom, int (*destroy) (BIO *)) | |
204 | { | |
205 | biom->destroy = destroy; | |
206 | return 1; | |
207 | } | |
208 | ||
fce78bd4 | 209 | long (*BIO_meth_get_callback_ctrl(BIO_METHOD *biom)) (BIO *, int, BIO_info_cb *) |
f334461f MC |
210 | { |
211 | return biom->callback_ctrl; | |
212 | } | |
213 | ||
214 | int BIO_meth_set_callback_ctrl(BIO_METHOD *biom, | |
215 | long (*callback_ctrl) (BIO *, int, | |
fce78bd4 | 216 | BIO_info_cb *)) |
f334461f MC |
217 | { |
218 | biom->callback_ctrl = callback_ctrl; | |
219 | return 1; | |
220 | } |