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Commit | Line | Data |
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b1322259 | 1 | /* |
e0c89df9 | 2 | * Copyright 2000-2017 The OpenSSL Project Authors. All Rights Reserved. |
4ec2d4d2 | 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 | |
4ec2d4d2 UM |
8 | */ |
9 | ||
effaf4de RS |
10 | #include <openssl/opensslconf.h> |
11 | #ifdef OPENSSL_NO_EGD | |
12 | NON_EMPTY_TRANSLATION_UNIT | |
13 | #else | |
14 | ||
15 | # include <openssl/crypto.h> | |
16 | # include <openssl/e_os2.h> | |
17 | # include <openssl/rand.h> | |
4ec2d4d2 | 18 | |
e0c89df9 RS |
19 | /* |
20 | * Query an EGD | |
4ec2d4d2 UM |
21 | */ |
22 | ||
1fbab1dc | 23 | # if defined(OPENSSL_SYS_WIN32) || defined(OPENSSL_SYS_VMS) || defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_VXWORKS) || defined(OPENSSL_SYS_VOS) || defined(OPENSSL_SYS_UEFI) |
2fbc8a2a | 24 | int RAND_query_egd_bytes(const char *path, unsigned char *buf, int bytes) |
0f113f3e | 25 | { |
a2371fa9 | 26 | return -1; |
0f113f3e MC |
27 | } |
28 | ||
4ec2d4d2 | 29 | int RAND_egd(const char *path) |
0f113f3e | 30 | { |
75e2c877 | 31 | return -1; |
0f113f3e | 32 | } |
1921eaad | 33 | |
0f113f3e MC |
34 | int RAND_egd_bytes(const char *path, int bytes) |
35 | { | |
75e2c877 | 36 | return -1; |
0f113f3e | 37 | } |
e0c89df9 | 38 | |
0f113f3e | 39 | # else |
e0c89df9 | 40 | |
0423f812 BK |
41 | # include OPENSSL_UNISTD |
42 | # include <stddef.h> | |
43 | # include <sys/types.h> | |
44 | # include <sys/socket.h> | |
45 | # ifndef NO_SYS_UN_H | |
46 | # ifdef OPENSSL_SYS_VXWORKS | |
47 | # include <streams/un.h> | |
48 | # else | |
49 | # include <sys/un.h> | |
50 | # endif | |
51 | # else | |
0f113f3e MC |
52 | struct sockaddr_un { |
53 | short sun_family; /* AF_UNIX */ | |
54 | char sun_path[108]; /* path name (gag) */ | |
8bf49ea1 | 55 | }; |
0423f812 BK |
56 | # endif /* NO_SYS_UN_H */ |
57 | # include <string.h> | |
58 | # include <errno.h> | |
4ec2d4d2 | 59 | |
6343829a | 60 | int RAND_query_egd_bytes(const char *path, unsigned char *buf, int bytes) |
0f113f3e | 61 | { |
e0c89df9 | 62 | FILE *fp = NULL; |
0f113f3e | 63 | struct sockaddr_un addr; |
e0c89df9 RS |
64 | int mybuffer, ret = -1, i, numbytes, fd; |
65 | unsigned char tempbuf[255]; | |
4ec2d4d2 | 66 | |
e0c89df9 RS |
67 | if (bytes > (int)sizeof(tempbuf)) |
68 | return -1; | |
69 | ||
70 | /* Make socket. */ | |
0f113f3e MC |
71 | memset(&addr, 0, sizeof(addr)); |
72 | addr.sun_family = AF_UNIX; | |
73 | if (strlen(path) >= sizeof(addr.sun_path)) | |
75e2c877 | 74 | return -1; |
0904e79a | 75 | strcpy(addr.sun_path, path); |
e0c89df9 | 76 | i = offsetof(struct sockaddr_un, sun_path) + strlen(path); |
0f113f3e | 77 | fd = socket(AF_UNIX, SOCK_STREAM, 0); |
e0c89df9 | 78 | if (fd == -1 || (fp = fdopen(fd, "r+")) == NULL) |
75e2c877 RS |
79 | return -1; |
80 | setbuf(fp, NULL); | |
e0c89df9 RS |
81 | |
82 | /* Try to connect */ | |
83 | for ( ; ; ) { | |
84 | if (connect(fd, (struct sockaddr *)&addr, i) == 0) | |
85 | break; | |
0423f812 | 86 | # ifdef EISCONN |
e0c89df9 RS |
87 | if (errno == EISCONN) |
88 | break; | |
0423f812 | 89 | # endif |
e0c89df9 | 90 | switch (errno) { |
0423f812 | 91 | # ifdef EINTR |
e0c89df9 | 92 | case EINTR: |
0423f812 BK |
93 | # endif |
94 | # ifdef EAGAIN | |
e0c89df9 | 95 | case EAGAIN: |
0423f812 | 96 | # endif |
e0c89df9 RS |
97 | # ifdef EINPROGRESS |
98 | case EINPROGRESS: | |
0423f812 | 99 | # endif |
e0c89df9 RS |
100 | # ifdef EALREADY |
101 | case EALREADY: | |
0423f812 | 102 | # endif |
e0c89df9 RS |
103 | /* No error, try again */ |
104 | break; | |
105 | default: | |
106 | ret = -1; | |
0f113f3e | 107 | goto err; |
0f113f3e | 108 | } |
0f113f3e | 109 | } |
e0c89df9 RS |
110 | |
111 | /* Make request, see how many bytes we can get back. */ | |
112 | tempbuf[0] = 1; | |
113 | tempbuf[1] = bytes; | |
114 | if (fwrite(tempbuf, sizeof(char), 2, fp) != 2 || fflush(fp) == EOF) | |
115 | goto err; | |
116 | if (fread(tempbuf, sizeof(char), 1, fp) != 1 || tempbuf[0] == 0) | |
117 | goto err; | |
118 | numbytes = tempbuf[0]; | |
119 | ||
120 | /* Which buffer are we using? */ | |
121 | mybuffer = buf == NULL; | |
122 | if (mybuffer) | |
123 | buf = tempbuf; | |
124 | ||
125 | /* Read bytes. */ | |
126 | i = fread(buf, sizeof(char), numbytes, fp); | |
127 | if (i < numbytes) | |
128 | goto err; | |
129 | ret = numbytes; | |
130 | if (mybuffer) | |
75e2c877 | 131 | RAND_add(tempbuf, i, i); |
e0c89df9 | 132 | |
599c0353 | 133 | err: |
e0c89df9 RS |
134 | if (fp != NULL) |
135 | fclose(fp); | |
a2371fa9 | 136 | return ret; |
0f113f3e | 137 | } |
a8ebe469 | 138 | |
6343829a | 139 | int RAND_egd_bytes(const char *path, int bytes) |
0f113f3e | 140 | { |
e0c89df9 | 141 | int num; |
599c0353 | 142 | |
0f113f3e | 143 | num = RAND_query_egd_bytes(path, NULL, bytes); |
c2114afc | 144 | if (num < 0) |
e0c89df9 RS |
145 | return -1; |
146 | if (RAND_status() != 1) | |
147 | return -1; | |
148 | return num; | |
0f113f3e | 149 | } |
1921eaad | 150 | |
a8ebe469 | 151 | int RAND_egd(const char *path) |
0f113f3e | 152 | { |
75e2c877 | 153 | return RAND_egd_bytes(path, 255); |
0f113f3e | 154 | } |
1921eaad | 155 | |
0423f812 BK |
156 | # endif |
157 | ||
4ec2d4d2 | 158 | #endif |