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1711f8de | 1 | /* ssl/record/rec_layer_s23.c */ |
58964a49 | 2 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
3 | * All rights reserved. |
4 | * | |
5 | * This package is an SSL implementation written | |
6 | * by Eric Young (eay@cryptsoft.com). | |
7 | * The implementation was written so as to conform with Netscapes SSL. | |
0f113f3e | 8 | * |
d02b48c6 RE |
9 | * This library is free for commercial and non-commercial use as long as |
10 | * the following conditions are aheared to. The following conditions | |
11 | * apply to all code found in this distribution, be it the RC4, RSA, | |
12 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
13 | * included with this distribution is covered by the same copyright terms | |
14 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
0f113f3e | 15 | * |
d02b48c6 RE |
16 | * Copyright remains Eric Young's, and as such any Copyright notices in |
17 | * the code are not to be removed. | |
18 | * If this package is used in a product, Eric Young should be given attribution | |
19 | * as the author of the parts of the library used. | |
20 | * This can be in the form of a textual message at program startup or | |
21 | * in documentation (online or textual) provided with the package. | |
0f113f3e | 22 | * |
d02b48c6 RE |
23 | * Redistribution and use in source and binary forms, with or without |
24 | * modification, are permitted provided that the following conditions | |
25 | * are met: | |
26 | * 1. Redistributions of source code must retain the copyright | |
27 | * notice, this list of conditions and the following disclaimer. | |
28 | * 2. Redistributions in binary form must reproduce the above copyright | |
29 | * notice, this list of conditions and the following disclaimer in the | |
30 | * documentation and/or other materials provided with the distribution. | |
31 | * 3. All advertising materials mentioning features or use of this software | |
32 | * must display the following acknowledgement: | |
33 | * "This product includes cryptographic software written by | |
34 | * Eric Young (eay@cryptsoft.com)" | |
35 | * The word 'cryptographic' can be left out if the rouines from the library | |
36 | * being used are not cryptographic related :-). | |
0f113f3e | 37 | * 4. If you include any Windows specific code (or a derivative thereof) from |
d02b48c6 RE |
38 | * the apps directory (application code) you must include an acknowledgement: |
39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
0f113f3e | 40 | * |
d02b48c6 RE |
41 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
42 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
43 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
44 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
45 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
46 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
47 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
48 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
49 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
50 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
51 | * SUCH DAMAGE. | |
0f113f3e | 52 | * |
d02b48c6 RE |
53 | * The licence and distribution terms for any publically available version or |
54 | * derivative of this code cannot be changed. i.e. this code cannot simply be | |
55 | * copied and put under another distribution licence | |
56 | * [including the GNU Public Licence.] | |
57 | */ | |
58 | ||
59 | #include <stdio.h> | |
60 | #include <errno.h> | |
61 | #define USE_SOCKETS | |
999005e4 | 62 | #include "../ssl_locl.h" |
ec577822 BM |
63 | #include <openssl/evp.h> |
64 | #include <openssl/buffer.h> | |
d02b48c6 | 65 | |
6b691a5c | 66 | int ssl23_write_bytes(SSL *s) |
0f113f3e MC |
67 | { |
68 | int i, num, tot; | |
69 | char *buf; | |
d02b48c6 | 70 | |
0f113f3e MC |
71 | buf = s->init_buf->data; |
72 | tot = s->init_off; | |
73 | num = s->init_num; | |
74 | for (;;) { | |
75 | s->rwstate = SSL_WRITING; | |
76 | i = BIO_write(s->wbio, &(buf[tot]), num); | |
77 | if (i <= 0) { | |
78 | s->init_off = tot; | |
79 | s->init_num = num; | |
80 | return (i); | |
81 | } | |
82 | s->rwstate = SSL_NOTHING; | |
83 | if (i == num) | |
84 | return (tot + i); | |
d02b48c6 | 85 | |
0f113f3e MC |
86 | num -= i; |
87 | tot += i; | |
88 | } | |
89 | } | |
d02b48c6 | 90 | |
074309b7 | 91 | /* return regularly only when we have read (at least) 'n' bytes */ |
6b691a5c | 92 | int ssl23_read_bytes(SSL *s, int n) |
0f113f3e MC |
93 | { |
94 | unsigned char *p; | |
95 | int j; | |
d02b48c6 | 96 | |
9e7ba3b2 MC |
97 | if (s->rlayer.packet_length < (unsigned int)n) { |
98 | p = s->rlayer.packet; | |
d02b48c6 | 99 | |
0f113f3e MC |
100 | for (;;) { |
101 | s->rwstate = SSL_READING; | |
7a7048af | 102 | j = BIO_read(s->rbio, |
9e7ba3b2 MC |
103 | (char *)&(p[s->rlayer.packet_length]), |
104 | n - s->rlayer.packet_length); | |
0f113f3e MC |
105 | if (j <= 0) |
106 | return (j); | |
107 | s->rwstate = SSL_NOTHING; | |
9e7ba3b2 MC |
108 | s->rlayer.packet_length += j; |
109 | if (s->rlayer.packet_length >= (unsigned int)n) | |
110 | return (s->rlayer.packet_length); | |
0f113f3e MC |
111 | } |
112 | } | |
113 | return (n); | |
114 | } |