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1 /* crypto/bio/bss_file.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 /* |
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60 * 03-Dec-1997 rdenny@dc3.com Fix bug preventing use of stdin/stdout |
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61 * with binary data (e.g. asn1parse -inform DER < xxx) under |
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62 * Windows |
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63 */ |
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64 /* |
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65 © Portions copyright (c) 2006 Nokia Corporation. All rights reserved. |
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66 */ |
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67 |
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68 |
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69 #ifndef HEADER_BSS_FILE_C |
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70 #define HEADER_BSS_FILE_C |
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71 |
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72 #if defined(__linux) || defined(__sun) || defined(__hpux) |
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73 /* Following definition aliases fopen to fopen64 on above mentioned |
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74 * platforms. This makes it possible to open and sequentially access |
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75 * files larger than 2GB from 32-bit application. It does not allow to |
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76 * traverse them beyond 2GB with fseek/ftell, but on the other hand *no* |
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77 * 32-bit platform permits that, not with fseek/ftell. Not to mention |
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78 * that breaking 2GB limit for seeking would require surgery to *our* |
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79 * API. But sequential access suffices for practical cases when you |
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80 * can run into large files, such as fingerprinting, so we can let API |
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81 * alone. For reference, the list of 32-bit platforms which allow for |
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82 * sequential access of large files without extra "magic" comprise *BSD, |
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83 * Darwin, IRIX... |
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84 */ |
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85 #ifndef _FILE_OFFSET_BITS |
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86 #define _FILE_OFFSET_BITS 64 |
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87 #endif |
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88 #endif |
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89 |
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90 #include <stdio.h> |
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91 #include <errno.h> |
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92 #include "cryptlib.h" |
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93 #include "bio_lcl.h" |
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94 #include <openssl/err.h> |
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95 #if (defined(SYMBIAN) && (defined(__WINSCW__) || defined(__WINS__))) |
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96 #include "libcrypto_wsd_macros.h" |
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97 #include "libcrypto_wsd.h" |
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98 #endif |
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99 |
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100 |
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101 #if !defined(OPENSSL_NO_STDIO) |
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102 |
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103 static int MS_CALLBACK file_write(BIO *h, const char *buf, int num); |
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104 static int MS_CALLBACK file_read(BIO *h, char *buf, int size); |
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105 static int MS_CALLBACK file_puts(BIO *h, const char *str); |
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106 static int MS_CALLBACK file_gets(BIO *h, char *str, int size); |
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107 static long MS_CALLBACK file_ctrl(BIO *h, int cmd, long arg1, void *arg2); |
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108 static int MS_CALLBACK file_new(BIO *h); |
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109 static int MS_CALLBACK file_free(BIO *data); |
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110 #ifndef EMULATOR |
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111 static BIO_METHOD methods_filep= |
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112 { |
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113 BIO_TYPE_FILE, |
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114 "FILE pointer", |
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115 file_write, |
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116 file_read, |
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117 file_puts, |
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118 file_gets, |
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119 file_ctrl, |
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120 file_new, |
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121 file_free, |
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122 NULL, |
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123 }; |
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124 #else |
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125 GET_STATIC_VAR_FROM_TLS(methods_filep,bss_file,BIO_METHOD) |
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126 #define methods_filep (*GET_WSD_VAR_NAME(methods_filep,bss_file,s)()) |
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127 const BIO_METHOD temp_s_methods_filep= |
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128 { |
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129 BIO_TYPE_FILE, |
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130 "FILE pointer", |
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131 file_write, |
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132 file_read, |
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133 file_puts, |
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134 file_gets, |
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135 file_ctrl, |
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136 file_new, |
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137 file_free, |
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138 NULL, |
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139 }; |
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140 |
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141 #endif |
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142 |
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143 |
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144 EXPORT_C BIO *BIO_new_file(const char *filename, const char *mode) |
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145 { |
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146 BIO *ret; |
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147 FILE *file; |
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148 |
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149 if ((file=fopen(filename,mode)) == NULL) |
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150 { |
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151 SYSerr(SYS_F_FOPEN,get_last_sys_error()); |
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152 ERR_add_error_data(5,"fopen('",filename,"','",mode,"')"); |
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153 if (errno == ENOENT) |
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154 BIOerr(BIO_F_BIO_NEW_FILE,BIO_R_NO_SUCH_FILE); |
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155 else |
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156 BIOerr(BIO_F_BIO_NEW_FILE,ERR_R_SYS_LIB); |
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157 return(NULL); |
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158 } |
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159 if ((ret=BIO_new(BIO_s_file_internal())) == NULL) |
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160 { |
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161 fclose(file); |
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162 return(NULL); |
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163 } |
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164 |
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165 BIO_clear_flags(ret,BIO_FLAGS_UPLINK); /* we did fopen -> we disengage UPLINK */ |
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166 BIO_set_fp(ret,file,BIO_CLOSE); |
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167 return(ret); |
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168 } |
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169 |
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170 EXPORT_C BIO *BIO_new_fp(FILE *stream, int close_flag) |
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171 { |
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172 BIO *ret; |
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173 |
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174 if ((ret=BIO_new(BIO_s_file())) == NULL) |
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175 return(NULL); |
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176 |
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177 BIO_set_flags(ret,BIO_FLAGS_UPLINK); /* redundant, left for documentation puposes */ |
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178 BIO_set_fp(ret,stream,close_flag); |
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179 return(ret); |
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180 } |
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181 |
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182 EXPORT_C BIO_METHOD *BIO_s_file(void) |
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183 { |
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184 return(&methods_filep); |
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185 } |
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186 |
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187 static int MS_CALLBACK file_new(BIO *bi) |
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188 { |
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189 bi->init=0; |
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190 bi->num=0; |
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191 bi->ptr=NULL; |
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192 bi->flags=BIO_FLAGS_UPLINK; /* default to UPLINK */ |
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193 return(1); |
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194 } |
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195 |
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196 static int MS_CALLBACK file_free(BIO *a) |
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197 { |
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198 if (a == NULL) return(0); |
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199 if (a->shutdown) |
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200 { |
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201 if ((a->init) && (a->ptr != NULL)) |
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202 { |
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203 if (a->flags&BIO_FLAGS_UPLINK) |
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204 UP_fclose (a->ptr); |
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205 else |
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206 fclose (a->ptr); |
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207 a->ptr=NULL; |
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208 a->flags=BIO_FLAGS_UPLINK; |
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209 } |
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210 a->init=0; |
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211 } |
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212 return(1); |
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213 } |
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214 |
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215 static int MS_CALLBACK file_read(BIO *b, char *out, int outl) |
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216 { |
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217 int ret=0; |
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218 |
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219 if (b->init && (out != NULL)) |
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220 { |
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221 if (b->flags&BIO_FLAGS_UPLINK) |
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222 ret=UP_fread(out,1,(int)outl,b->ptr); |
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223 else |
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224 ret=fread(out,1,(int)outl,(FILE *)b->ptr); |
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225 if(ret == 0 && (b->flags&BIO_FLAGS_UPLINK)?UP_ferror((FILE *)b->ptr):ferror((FILE *)b->ptr)) |
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226 { |
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227 SYSerr(SYS_F_FREAD,get_last_sys_error()); |
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228 BIOerr(BIO_F_FILE_READ,ERR_R_SYS_LIB); |
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229 ret=-1; |
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230 } |
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231 } |
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232 return(ret); |
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233 } |
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234 |
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235 static int MS_CALLBACK file_write(BIO *b, const char *in, int inl) |
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236 { |
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237 int ret=0; |
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238 |
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239 if (b->init && (in != NULL)) |
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240 { |
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241 if (b->flags&BIO_FLAGS_UPLINK) |
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242 ret=UP_fwrite(in,(int)inl,1,b->ptr); |
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243 else |
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244 ret=fwrite(in,(int)inl,1,(FILE *)b->ptr); |
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245 if (ret) |
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246 ret=inl; |
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247 /* ret=fwrite(in,1,(int)inl,(FILE *)b->ptr); */ |
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248 /* according to Tim Hudson <tjh@cryptsoft.com>, the commented |
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249 * out version above can cause 'inl' write calls under |
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250 * some stupid stdio implementations (VMS) */ |
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251 } |
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252 return(ret); |
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253 } |
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254 |
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255 static long MS_CALLBACK file_ctrl(BIO *b, int cmd, long num, void *ptr) |
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256 { |
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257 long ret=1; |
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258 FILE *fp=(FILE *)b->ptr; |
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259 FILE **fpp; |
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260 char p[4]; |
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261 |
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262 switch (cmd) |
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263 { |
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264 case BIO_C_FILE_SEEK: |
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265 case BIO_CTRL_RESET: |
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266 if (b->flags&BIO_FLAGS_UPLINK) |
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267 ret=(long)UP_fseek(b->ptr,num,0); |
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268 else |
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269 ret=(long)fseek(fp,num,0); |
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270 break; |
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271 case BIO_CTRL_EOF: |
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272 if (b->flags&BIO_FLAGS_UPLINK) |
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273 ret=(long)UP_feof(fp); |
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274 else |
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275 ret=(long)feof(fp); |
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276 break; |
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277 case BIO_C_FILE_TELL: |
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278 case BIO_CTRL_INFO: |
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279 if (b->flags&BIO_FLAGS_UPLINK) |
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280 ret=UP_ftell(b->ptr); |
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281 else |
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282 ret=ftell(fp); |
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283 break; |
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284 case BIO_C_SET_FILE_PTR: |
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285 file_free(b); |
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286 b->shutdown=(int)num&BIO_CLOSE; |
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287 b->ptr=ptr; |
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288 b->init=1; |
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289 #if BIO_FLAGS_UPLINK!=0 |
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290 #if defined(__MINGW32__) && defined(__MSVCRT__) && !defined(_IOB_ENTRIES) |
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291 #define _IOB_ENTRIES 20 |
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292 #endif |
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293 #if defined(_IOB_ENTRIES) |
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294 /* Safety net to catch purely internal BIO_set_fp calls */ |
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295 if ((size_t)ptr >= (size_t)stdin && |
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296 (size_t)ptr < (size_t)(stdin+_IOB_ENTRIES)) |
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297 BIO_clear_flags(b,BIO_FLAGS_UPLINK); |
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298 #endif |
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299 #endif |
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300 #ifdef UP_fsetmode |
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301 if (b->flags&BIO_FLAGS_UPLINK) |
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302 UP_fsetmode(b->ptr,num&BIO_FP_TEXT?'t':'b'); |
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303 else |
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304 #endif |
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305 { |
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306 #if defined(OPENSSL_SYS_WINDOWS) |
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307 int fd = fileno((FILE*)ptr); |
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308 if (num & BIO_FP_TEXT) |
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309 _setmode(fd,_O_TEXT); |
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310 else |
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311 _setmode(fd,_O_BINARY); |
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312 #elif defined(OPENSSL_SYS_NETWARE) && defined(NETWARE_CLIB) |
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313 int fd = fileno((FILE*)ptr); |
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314 /* Under CLib there are differences in file modes |
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315 */ |
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316 if (num & BIO_FP_TEXT) |
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317 _setmode(fd,O_TEXT); |
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318 else |
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319 _setmode(fd,O_BINARY); |
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320 #elif defined(OPENSSL_SYS_MSDOS) |
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321 int fd = fileno((FILE*)ptr); |
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322 /* Set correct text/binary mode */ |
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323 if (num & BIO_FP_TEXT) |
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324 _setmode(fd,_O_TEXT); |
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325 /* Dangerous to set stdin/stdout to raw (unless redirected) */ |
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326 else |
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327 { |
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328 if (fd == STDIN_FILENO || fd == STDOUT_FILENO) |
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329 { |
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330 if (isatty(fd) <= 0) |
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331 _setmode(fd,_O_BINARY); |
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332 } |
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333 else |
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334 _setmode(fd,_O_BINARY); |
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335 } |
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336 #elif defined(OPENSSL_SYS_OS2) |
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337 int fd = fileno((FILE*)ptr); |
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338 if (num & BIO_FP_TEXT) |
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339 setmode(fd, O_TEXT); |
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340 else |
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341 setmode(fd, O_BINARY); |
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342 #endif |
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343 } |
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344 break; |
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345 case BIO_C_SET_FILENAME: |
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346 file_free(b); |
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347 b->shutdown=(int)num&BIO_CLOSE; |
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348 if (num & BIO_FP_APPEND) |
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349 { |
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350 if (num & BIO_FP_READ) |
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351 BUF_strlcpy(p,"a+",sizeof p); |
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352 else BUF_strlcpy(p,"a",sizeof p); |
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353 } |
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354 else if ((num & BIO_FP_READ) && (num & BIO_FP_WRITE)) |
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355 BUF_strlcpy(p,"r+",sizeof p); |
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356 else if (num & BIO_FP_WRITE) |
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357 BUF_strlcpy(p,"w",sizeof p); |
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358 else if (num & BIO_FP_READ) |
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359 BUF_strlcpy(p,"r",sizeof p); |
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360 else |
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361 { |
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362 BIOerr(BIO_F_FILE_CTRL,BIO_R_BAD_FOPEN_MODE); |
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363 ret=0; |
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364 break; |
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365 } |
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366 #if defined(OPENSSL_SYS_MSDOS) || defined(OPENSSL_SYS_WINDOWS) || defined(OPENSSL_SYS_OS2) || defined(OPENSSL_SYS_WIN32_CYGWIN) |
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367 if (!(num & BIO_FP_TEXT)) |
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368 strcat(p,"b"); |
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369 else |
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370 strcat(p,"t"); |
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371 #endif |
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372 #if defined(OPENSSL_SYS_NETWARE) |
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373 if (!(num & BIO_FP_TEXT)) |
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374 strcat(p,"b"); |
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375 else |
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376 strcat(p,"t"); |
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377 #endif |
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378 fp=fopen(ptr,p); |
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379 if (fp == NULL) |
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380 { |
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381 SYSerr(SYS_F_FOPEN,get_last_sys_error()); |
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382 ERR_add_error_data(5,"fopen('",ptr,"','",p,"')"); |
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383 BIOerr(BIO_F_FILE_CTRL,ERR_R_SYS_LIB); |
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384 ret=0; |
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385 break; |
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386 } |
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387 b->ptr=fp; |
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388 b->init=1; |
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389 BIO_clear_flags(b,BIO_FLAGS_UPLINK); /* we did fopen -> we disengage UPLINK */ |
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390 break; |
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391 case BIO_C_GET_FILE_PTR: |
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392 /* the ptr parameter is actually a FILE ** in this case. */ |
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393 if (ptr != NULL) |
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394 { |
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395 fpp=(FILE **)ptr; |
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396 *fpp=(FILE *)b->ptr; |
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397 } |
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398 break; |
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399 case BIO_CTRL_GET_CLOSE: |
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400 ret=(long)b->shutdown; |
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401 break; |
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402 case BIO_CTRL_SET_CLOSE: |
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403 b->shutdown=(int)num; |
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404 break; |
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405 case BIO_CTRL_FLUSH: |
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406 if (b->flags&BIO_FLAGS_UPLINK) |
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407 UP_fflush(b->ptr); |
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408 else |
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409 fflush((FILE *)b->ptr); |
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410 break; |
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411 case BIO_CTRL_DUP: |
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412 ret=1; |
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413 break; |
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414 |
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415 case BIO_CTRL_WPENDING: |
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416 case BIO_CTRL_PENDING: |
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417 case BIO_CTRL_PUSH: |
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418 case BIO_CTRL_POP: |
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419 default: |
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420 ret=0; |
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421 break; |
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422 } |
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423 return(ret); |
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424 } |
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425 |
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426 static int MS_CALLBACK file_gets(BIO *bp, char *buf, int size) |
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427 { |
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428 int ret=0; |
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429 |
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430 buf[0]='\0'; |
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431 if (bp->flags&BIO_FLAGS_UPLINK) |
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432 UP_fgets(buf,size,bp->ptr); |
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433 else |
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434 fgets(buf,size,(FILE *)bp->ptr); |
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435 if (buf[0] != '\0') |
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436 ret=strlen(buf); |
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437 return(ret); |
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438 } |
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439 |
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440 static int MS_CALLBACK file_puts(BIO *bp, const char *str) |
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441 { |
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442 int n,ret; |
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443 |
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444 n=strlen(str); |
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445 ret=file_write(bp,str,n); |
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446 return(ret); |
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447 } |
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448 |
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449 #endif /* OPENSSL_NO_STDIO */ |
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450 |
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451 #endif /* HEADER_BSS_FILE_C */ |
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452 |
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453 |