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1 /* crypto/asn1/f_int.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 #include <stdio.h> |
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62 #include "cryptlib.h" |
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63 #include <openssl/buffer.h> |
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64 #include <openssl/asn1.h> |
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65 #if (defined(SYMBIAN) && (defined(__WINSCW__) || defined(__WINS__))) |
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66 #include "libcrypto_wsd_macros.h" |
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67 #include "libcrypto_wsd.h" |
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68 #endif |
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69 |
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70 |
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71 EXPORT_C int i2a_ASN1_INTEGER(BIO *bp, ASN1_INTEGER *a) |
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72 { |
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73 int i,n=0; |
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74 #ifndef EMULATOR |
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75 static const char *h="0123456789ABCDEF"; |
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76 #else |
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77 static const char *const h="0123456789ABCDEF"; |
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78 #endif |
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79 char buf[2]; |
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80 |
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81 if (a == NULL) return(0); |
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82 |
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83 if (a->type & V_ASN1_NEG) |
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84 { |
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85 if (BIO_write(bp, "-", 1) != 1) goto err; |
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86 n = 1; |
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87 } |
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88 |
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89 if (a->length == 0) |
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90 { |
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91 if (BIO_write(bp,"00",2) != 2) goto err; |
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92 n += 2; |
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93 } |
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94 else |
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95 { |
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96 for (i=0; i<a->length; i++) |
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97 { |
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98 if ((i != 0) && (i%35 == 0)) |
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99 { |
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100 if (BIO_write(bp,"\\\n",2) != 2) goto err; |
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101 n+=2; |
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102 } |
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103 buf[0]=h[((unsigned char)a->data[i]>>4)&0x0f]; |
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104 buf[1]=h[((unsigned char)a->data[i] )&0x0f]; |
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105 if (BIO_write(bp,buf,2) != 2) goto err; |
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106 n+=2; |
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107 } |
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108 } |
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109 return(n); |
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110 err: |
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111 return(-1); |
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112 } |
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113 |
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114 EXPORT_C int a2i_ASN1_INTEGER(BIO *bp, ASN1_INTEGER *bs, char *buf, int size) |
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115 { |
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116 int ret=0; |
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117 int i,j,k,m,n,again,bufsize; |
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118 unsigned char *s=NULL,*sp; |
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119 unsigned char *bufp; |
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120 int num=0,slen=0,first=1; |
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121 |
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122 bs->type=V_ASN1_INTEGER; |
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123 |
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124 bufsize=BIO_gets(bp,buf,size); |
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125 for (;;) |
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126 { |
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127 if (bufsize < 1) goto err_sl; |
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128 i=bufsize; |
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129 if (buf[i-1] == '\n') buf[--i]='\0'; |
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130 if (i == 0) goto err_sl; |
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131 if (buf[i-1] == '\r') buf[--i]='\0'; |
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132 if (i == 0) goto err_sl; |
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133 again=(buf[i-1] == '\\'); |
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134 |
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135 for (j=0; j<i; j++) |
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136 { |
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137 #ifndef CHARSET_EBCDIC |
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138 if (!( ((buf[j] >= '0') && (buf[j] <= '9')) || |
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139 ((buf[j] >= 'a') && (buf[j] <= 'f')) || |
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140 ((buf[j] >= 'A') && (buf[j] <= 'F')))) |
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141 #else |
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142 /* This #ifdef is not strictly necessary, since |
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143 * the characters A...F a...f 0...9 are contiguous |
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144 * (yes, even in EBCDIC - but not the whole alphabet). |
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145 * Nevertheless, isxdigit() is faster. |
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146 */ |
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147 if (!isxdigit(buf[j])) |
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148 #endif |
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149 { |
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150 i=j; |
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151 break; |
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152 } |
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153 } |
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154 buf[i]='\0'; |
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155 /* We have now cleared all the crap off the end of the |
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156 * line */ |
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157 if (i < 2) goto err_sl; |
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158 |
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159 bufp=(unsigned char *)buf; |
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160 if (first) |
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161 { |
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162 first=0; |
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163 if ((bufp[0] == '0') && (buf[1] == '0')) |
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164 { |
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165 bufp+=2; |
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166 i-=2; |
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167 } |
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168 } |
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169 k=0; |
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170 i-=again; |
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171 if (i%2 != 0) |
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172 { |
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173 ASN1err(ASN1_F_A2I_ASN1_INTEGER,ASN1_R_ODD_NUMBER_OF_CHARS); |
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174 goto err; |
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175 } |
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176 i/=2; |
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177 if (num+i > slen) |
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178 { |
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179 if (s == NULL) |
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180 sp=(unsigned char *)OPENSSL_malloc( |
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181 (unsigned int)num+i*2); |
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182 else |
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183 sp=OPENSSL_realloc_clean(s,slen,num+i*2); |
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184 if (sp == NULL) |
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185 { |
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186 ASN1err(ASN1_F_A2I_ASN1_INTEGER,ERR_R_MALLOC_FAILURE); |
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187 if (s != NULL) OPENSSL_free(s); |
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188 goto err; |
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189 } |
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190 s=sp; |
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191 slen=num+i*2; |
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192 } |
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193 for (j=0; j<i; j++,k+=2) |
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194 { |
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195 for (n=0; n<2; n++) |
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196 { |
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197 m=bufp[k+n]; |
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198 if ((m >= '0') && (m <= '9')) |
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199 m-='0'; |
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200 else if ((m >= 'a') && (m <= 'f')) |
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201 m=m-'a'+10; |
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202 else if ((m >= 'A') && (m <= 'F')) |
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203 m=m-'A'+10; |
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204 else |
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205 { |
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206 ASN1err(ASN1_F_A2I_ASN1_INTEGER,ASN1_R_NON_HEX_CHARACTERS); |
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207 goto err; |
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208 } |
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209 s[num+j]<<=4; |
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210 s[num+j]|=m; |
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211 } |
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212 } |
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213 num+=i; |
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214 if (again) |
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215 bufsize=BIO_gets(bp,buf,size); |
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216 else |
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217 break; |
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218 } |
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219 bs->length=num; |
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220 bs->data=s; |
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221 ret=1; |
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222 err: |
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223 if (0) |
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224 { |
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225 err_sl: |
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226 ASN1err(ASN1_F_A2I_ASN1_INTEGER,ASN1_R_SHORT_LINE); |
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227 } |
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228 return(ret); |
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229 } |
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230 |