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1 /* crypto/bio/bss_sock.c */ |
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2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
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3 * All rights reserved. |
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4 * |
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5 * This package is an SSL implementation written |
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6 * by Eric Young (eay@cryptsoft.com). |
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7 * The implementation was written so as to conform with Netscapes SSL. |
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8 * |
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9 * This library is free for commercial and non-commercial use as long as |
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10 * the following conditions are aheared to. The following conditions |
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11 * apply to all code found in this distribution, be it the RC4, RSA, |
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12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation |
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13 * included with this distribution is covered by the same copyright terms |
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14 * except that the holder is Tim Hudson (tjh@cryptsoft.com). |
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15 * |
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16 * Copyright remains Eric Young's, and as such any Copyright notices in |
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17 * the code are not to be removed. |
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18 * If this package is used in a product, Eric Young should be given attribution |
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19 * as the author of the parts of the library used. |
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20 * This can be in the form of a textual message at program startup or |
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21 * in documentation (online or textual) provided with the package. |
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22 * |
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23 * Redistribution and use in source and binary forms, with or without |
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24 * modification, are permitted provided that the following conditions |
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25 * are met: |
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26 * 1. Redistributions of source code must retain the copyright |
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27 * notice, this list of conditions and the following disclaimer. |
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28 * 2. Redistributions in binary form must reproduce the above copyright |
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29 * notice, this list of conditions and the following disclaimer in the |
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30 * documentation and/or other materials provided with the distribution. |
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31 * 3. All advertising materials mentioning features or use of this software |
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32 * must display the following acknowledgement: |
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33 * "This product includes cryptographic software written by |
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34 * Eric Young (eay@cryptsoft.com)" |
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35 * The word 'cryptographic' can be left out if the rouines from the library |
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36 * being used are not cryptographic related :-). |
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37 * 4. If you include any Windows specific code (or a derivative thereof) from |
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38 * the apps directory (application code) you must include an acknowledgement: |
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39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" |
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40 * |
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41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
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42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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51 * SUCH DAMAGE. |
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52 * |
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53 * The licence and distribution terms for any publically available version or |
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54 * derivative of this code cannot be changed. i.e. this code cannot simply be |
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55 * copied and put under another distribution licence |
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56 * [including the GNU Public Licence.] |
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57 */ |
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58 /* |
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59 © Portions copyright (c) 2006 Nokia Corporation. All rights reserved. |
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60 */ |
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61 |
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62 |
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63 #include <stdio.h> |
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64 #include <errno.h> |
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65 #define USE_SOCKETS |
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66 #include "cryptlib.h" |
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67 #include <openssl/bio.h> |
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68 #if (defined(SYMBIAN) && (defined(__WINSCW__) || defined(__WINS__))) |
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69 #include "libcrypto_wsd_macros.h" |
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70 #include "libcrypto_wsd.h" |
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71 #endif |
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72 |
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73 #ifdef WATT32 |
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74 #define sock_write SockWrite /* Watt-32 uses same names */ |
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75 #define sock_read SockRead |
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76 #define sock_puts SockPuts |
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77 #endif |
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78 |
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79 static int sock_write(BIO *h, const char *buf, int num); |
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80 static int sock_read(BIO *h, char *buf, int size); |
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81 static int sock_puts(BIO *h, const char *str); |
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82 static long sock_ctrl(BIO *h, int cmd, long arg1, void *arg2); |
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83 static int sock_new(BIO *h); |
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84 static int sock_free(BIO *data); |
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85 int BIO_sock_should_retry(int s); |
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86 |
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87 #ifndef EMULATOR |
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88 static BIO_METHOD methods_sockp= |
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89 { |
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90 BIO_TYPE_SOCKET, |
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91 "socket", |
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92 sock_write, |
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93 sock_read, |
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94 sock_puts, |
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95 NULL, /* sock_gets, */ |
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96 sock_ctrl, |
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97 sock_new, |
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98 sock_free, |
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99 NULL, |
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100 }; |
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101 #else |
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102 |
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103 GET_STATIC_VAR_FROM_TLS(methods_sockp,bss_sock,BIO_METHOD) |
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104 #define methods_sockp (*GET_WSD_VAR_NAME(methods_sockp,bss_sock,s)()) |
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105 BIO_METHOD const temp_s_methods_sockp= |
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106 { |
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107 BIO_TYPE_SOCKET, |
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108 "socket", |
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109 sock_write, |
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110 sock_read, |
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111 sock_puts, |
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112 NULL, /* sock_gets, */ |
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113 sock_ctrl, |
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114 sock_new, |
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115 sock_free, |
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116 NULL, |
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117 }; |
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118 |
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119 #endif |
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120 |
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121 |
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122 EXPORT_C BIO_METHOD *BIO_s_socket(void) |
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123 { |
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124 return(&methods_sockp); |
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125 } |
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126 |
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127 EXPORT_C BIO *BIO_new_socket(int fd, int close_flag) |
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128 { |
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129 BIO *ret; |
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130 |
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131 ret=BIO_new(BIO_s_socket()); |
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132 if (ret == NULL) return(NULL); |
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133 BIO_set_fd(ret,fd,close_flag); |
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134 return(ret); |
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135 } |
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136 |
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137 static int sock_new(BIO *bi) |
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138 { |
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139 bi->init=0; |
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140 bi->num=0; |
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141 bi->ptr=NULL; |
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142 bi->flags=0; |
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143 return(1); |
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144 } |
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145 |
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146 static int sock_free(BIO *a) |
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147 { |
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148 if (a == NULL) return(0); |
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149 if (a->shutdown) |
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150 { |
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151 if (a->init) |
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152 { |
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153 SHUTDOWN2(a->num); |
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154 } |
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155 a->init=0; |
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156 a->flags=0; |
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157 } |
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158 return(1); |
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159 } |
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160 |
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161 static int sock_read(BIO *b, char *out, int outl) |
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162 { |
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163 int ret=0; |
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164 |
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165 if (out != NULL) |
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166 { |
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167 clear_socket_error(); |
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168 ret=readsocket(b->num,out,outl); |
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169 BIO_clear_retry_flags(b); |
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170 if (ret <= 0) |
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171 { |
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172 if (BIO_sock_should_retry(ret)) |
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173 BIO_set_retry_read(b); |
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174 } |
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175 } |
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176 return(ret); |
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177 } |
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178 |
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179 static int sock_write(BIO *b, const char *in, int inl) |
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180 { |
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181 int ret; |
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182 |
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183 clear_socket_error(); |
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184 ret=writesocket(b->num,in,inl); |
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185 BIO_clear_retry_flags(b); |
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186 if (ret <= 0) |
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187 { |
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188 if (BIO_sock_should_retry(ret)) |
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189 BIO_set_retry_write(b); |
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190 } |
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191 return(ret); |
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192 } |
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193 |
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194 static long sock_ctrl(BIO *b, int cmd, long num, void *ptr) |
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195 { |
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196 long ret=1; |
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197 int *ip; |
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198 |
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199 switch (cmd) |
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200 { |
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201 case BIO_CTRL_RESET: |
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202 num=0; |
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203 case BIO_C_FILE_SEEK: |
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204 ret=0; |
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205 break; |
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206 case BIO_C_FILE_TELL: |
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207 case BIO_CTRL_INFO: |
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208 ret=0; |
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209 break; |
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210 case BIO_C_SET_FD: |
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211 sock_free(b); |
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212 b->num= *((int *)ptr); |
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213 b->shutdown=(int)num; |
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214 b->init=1; |
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215 break; |
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216 case BIO_C_GET_FD: |
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217 if (b->init) |
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218 { |
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219 ip=(int *)ptr; |
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220 if (ip != NULL) *ip=b->num; |
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221 ret=b->num; |
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222 } |
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223 else |
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224 ret= -1; |
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225 break; |
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226 case BIO_CTRL_GET_CLOSE: |
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227 ret=b->shutdown; |
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228 break; |
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229 case BIO_CTRL_SET_CLOSE: |
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230 b->shutdown=(int)num; |
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231 break; |
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232 case BIO_CTRL_PENDING: |
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233 case BIO_CTRL_WPENDING: |
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234 ret=0; |
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235 break; |
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236 case BIO_CTRL_DUP: |
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237 case BIO_CTRL_FLUSH: |
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238 ret=1; |
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239 break; |
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240 default: |
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241 ret=0; |
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242 break; |
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243 } |
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244 return(ret); |
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245 } |
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246 |
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247 static int sock_puts(BIO *bp, const char *str) |
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248 { |
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249 int n,ret; |
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250 |
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251 n=strlen(str); |
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252 ret=sock_write(bp,str,n); |
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253 return(ret); |
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254 } |
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255 |
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256 EXPORT_C int BIO_sock_should_retry(int i) |
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257 { |
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258 int err; |
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259 |
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260 if ((i == 0) || (i == -1)) |
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261 { |
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262 err=get_last_socket_error(); |
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263 |
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264 #if defined(OPENSSL_SYS_WINDOWS) && 0 /* more microsoft stupidity? perhaps not? Ben 4/1/99 */ |
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265 if ((i == -1) && (err == 0)) |
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266 return(1); |
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267 #endif |
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268 |
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269 return(BIO_sock_non_fatal_error(err)); |
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270 } |
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271 return(0); |
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272 } |
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273 |
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274 EXPORT_C int BIO_sock_non_fatal_error(int err) |
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275 { |
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276 switch (err) |
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277 { |
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278 #if defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_NETWARE) |
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279 # if defined(WSAEWOULDBLOCK) |
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280 case WSAEWOULDBLOCK: |
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281 # endif |
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282 |
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283 # if 0 /* This appears to always be an error */ |
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284 # if defined(WSAENOTCONN) |
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285 case WSAENOTCONN: |
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286 # endif |
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287 # endif |
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288 #endif |
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289 |
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290 #ifdef EWOULDBLOCK |
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291 # ifdef WSAEWOULDBLOCK |
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292 # if WSAEWOULDBLOCK != EWOULDBLOCK |
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293 case EWOULDBLOCK: |
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294 # endif |
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295 # else |
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296 case EWOULDBLOCK: |
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297 # endif |
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298 #endif |
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299 |
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300 #if defined(ENOTCONN) |
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301 case ENOTCONN: |
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302 #endif |
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303 |
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304 #ifdef EINTR |
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305 case EINTR: |
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306 #endif |
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307 |
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308 #ifdef EAGAIN |
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309 # if EWOULDBLOCK != EAGAIN |
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310 case EAGAIN: |
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311 # endif |
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312 #endif |
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313 |
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314 #ifdef EPROTO |
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315 case EPROTO: |
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316 #endif |
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317 |
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318 #ifdef EINPROGRESS |
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319 case EINPROGRESS: |
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320 #endif |
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321 |
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322 #ifdef EALREADY |
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323 case EALREADY: |
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324 #endif |
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325 return(1); |
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326 /* break; */ |
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327 default: |
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328 break; |
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329 } |
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330 return(0); |
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331 } |