1 | /*
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2 | * Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.
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3 | *
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4 | * Licensed under the OpenSSL license (the "License"). You may not use
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5 | * this file except in compliance with the License. You can obtain a copy
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6 | * in the file LICENSE in the source distribution or at
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7 | * https://www.openssl.org/source/license.html
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8 | */
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9 |
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10 | #include "dso_locl.h"
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11 |
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12 | #if defined(DSO_WIN32)
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13 |
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14 | # ifdef _WIN32_WCE
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15 | # if _WIN32_WCE < 300
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16 | static FARPROC GetProcAddressA(HMODULE hModule, LPCSTR lpProcName)
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17 | {
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18 | WCHAR lpProcNameW[64];
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19 | int i;
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20 |
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21 | for (i = 0; lpProcName[i] && i < 64; i++)
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22 | lpProcNameW[i] = (WCHAR)lpProcName[i];
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23 | if (i == 64)
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24 | return NULL;
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25 | lpProcNameW[i] = 0;
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26 |
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27 | return GetProcAddressW(hModule, lpProcNameW);
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28 | }
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29 | # endif
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30 | # undef GetProcAddress
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31 | # define GetProcAddress GetProcAddressA
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32 |
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33 | static HINSTANCE LoadLibraryA(LPCSTR lpLibFileName)
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34 | {
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35 | WCHAR *fnamw;
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36 | size_t len_0 = strlen(lpLibFileName) + 1, i;
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37 |
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38 | # ifdef _MSC_VER
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39 | fnamw = (WCHAR *)_alloca(len_0 * sizeof(WCHAR));
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40 | # else
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41 | fnamw = (WCHAR *)alloca(len_0 * sizeof(WCHAR));
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42 | # endif
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43 | if (fnamw == NULL) {
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44 | SetLastError(ERROR_NOT_ENOUGH_MEMORY);
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45 | return NULL;
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46 | }
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47 | # if defined(_WIN32_WCE) && _WIN32_WCE>=101
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48 | if (!MultiByteToWideChar(CP_ACP, 0, lpLibFileName, len_0, fnamw, len_0))
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49 | # endif
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50 | for (i = 0; i < len_0; i++)
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51 | fnamw[i] = (WCHAR)lpLibFileName[i];
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52 |
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53 | return LoadLibraryW(fnamw);
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54 | }
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55 | # endif
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56 |
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57 | /* Part of the hack in "win32_load" ... */
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58 | # define DSO_MAX_TRANSLATED_SIZE 256
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59 |
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60 | static int win32_load(DSO *dso);
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61 | static int win32_unload(DSO *dso);
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62 | static DSO_FUNC_TYPE win32_bind_func(DSO *dso, const char *symname);
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63 | static char *win32_name_converter(DSO *dso, const char *filename);
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64 | static char *win32_merger(DSO *dso, const char *filespec1,
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65 | const char *filespec2);
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66 | static void *win32_globallookup(const char *name);
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67 |
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68 | static const char *openssl_strnchr(const char *string, int c, size_t len);
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69 |
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70 | static DSO_METHOD dso_meth_win32 = {
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71 | "OpenSSL 'win32' shared library method",
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72 | win32_load,
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73 | win32_unload,
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74 | win32_bind_func,
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75 | NULL, /* ctrl */
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76 | win32_name_converter,
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77 | win32_merger,
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78 | NULL, /* init */
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79 | NULL, /* finish */
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80 | NULL, /* pathbyaddr */
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81 | win32_globallookup
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82 | };
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83 |
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84 | DSO_METHOD *DSO_METHOD_openssl(void)
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85 | {
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86 | return &dso_meth_win32;
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87 | }
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88 |
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89 | /*
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90 | * For this DSO_METHOD, our meth_data STACK will contain; (i) a pointer to
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91 | * the handle (HINSTANCE) returned from LoadLibrary(), and copied.
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92 | */
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93 |
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94 | static int win32_load(DSO *dso)
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95 | {
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96 | HINSTANCE h = NULL, *p = NULL;
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97 | /* See applicable comments from dso_dl.c */
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98 | char *filename = DSO_convert_filename(dso, NULL);
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99 |
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100 | if (filename == NULL) {
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101 | DSOerr(DSO_F_WIN32_LOAD, DSO_R_NO_FILENAME);
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102 | goto err;
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103 | }
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104 | h = LoadLibraryA(filename);
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105 | if (h == NULL) {
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106 | DSOerr(DSO_F_WIN32_LOAD, DSO_R_LOAD_FAILED);
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107 | ERR_add_error_data(3, "filename(", filename, ")");
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108 | goto err;
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109 | }
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110 | p = OPENSSL_malloc(sizeof(*p));
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111 | if (p == NULL) {
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112 | DSOerr(DSO_F_WIN32_LOAD, ERR_R_MALLOC_FAILURE);
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113 | goto err;
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114 | }
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115 | *p = h;
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116 | if (!sk_void_push(dso->meth_data, p)) {
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117 | DSOerr(DSO_F_WIN32_LOAD, DSO_R_STACK_ERROR);
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118 | goto err;
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119 | }
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120 | /* Success */
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121 | dso->loaded_filename = filename;
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122 | return (1);
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123 | err:
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124 | /* Cleanup ! */
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125 | OPENSSL_free(filename);
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126 | OPENSSL_free(p);
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127 | if (h != NULL)
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128 | FreeLibrary(h);
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129 | return (0);
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130 | }
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131 |
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132 | static int win32_unload(DSO *dso)
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133 | {
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134 | HINSTANCE *p;
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135 | if (dso == NULL) {
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136 | DSOerr(DSO_F_WIN32_UNLOAD, ERR_R_PASSED_NULL_PARAMETER);
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137 | return (0);
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138 | }
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139 | if (sk_void_num(dso->meth_data) < 1)
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140 | return (1);
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141 | p = sk_void_pop(dso->meth_data);
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142 | if (p == NULL) {
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143 | DSOerr(DSO_F_WIN32_UNLOAD, DSO_R_NULL_HANDLE);
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144 | return (0);
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145 | }
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146 | if (!FreeLibrary(*p)) {
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147 | DSOerr(DSO_F_WIN32_UNLOAD, DSO_R_UNLOAD_FAILED);
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148 | /*
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149 | * We should push the value back onto the stack in case of a retry.
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150 | */
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151 | sk_void_push(dso->meth_data, p);
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152 | return (0);
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153 | }
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154 | /* Cleanup */
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155 | OPENSSL_free(p);
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156 | return (1);
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157 | }
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158 |
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159 | static DSO_FUNC_TYPE win32_bind_func(DSO *dso, const char *symname)
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160 | {
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161 | HINSTANCE *ptr;
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162 | union {
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163 | void *p;
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164 | FARPROC f;
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165 | } sym;
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166 |
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167 | if ((dso == NULL) || (symname == NULL)) {
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168 | DSOerr(DSO_F_WIN32_BIND_FUNC, ERR_R_PASSED_NULL_PARAMETER);
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169 | return (NULL);
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170 | }
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171 | if (sk_void_num(dso->meth_data) < 1) {
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172 | DSOerr(DSO_F_WIN32_BIND_FUNC, DSO_R_STACK_ERROR);
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173 | return (NULL);
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174 | }
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175 | ptr = sk_void_value(dso->meth_data, sk_void_num(dso->meth_data) - 1);
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176 | if (ptr == NULL) {
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177 | DSOerr(DSO_F_WIN32_BIND_FUNC, DSO_R_NULL_HANDLE);
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178 | return (NULL);
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179 | }
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180 | sym.f = GetProcAddress(*ptr, symname);
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181 | if (sym.p == NULL) {
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182 | DSOerr(DSO_F_WIN32_BIND_FUNC, DSO_R_SYM_FAILURE);
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183 | ERR_add_error_data(3, "symname(", symname, ")");
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184 | return (NULL);
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185 | }
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186 | return ((DSO_FUNC_TYPE)sym.f);
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187 | }
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188 |
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189 | struct file_st {
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190 | const char *node;
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191 | int nodelen;
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192 | const char *device;
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193 | int devicelen;
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194 | const char *predir;
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195 | int predirlen;
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196 | const char *dir;
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197 | int dirlen;
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198 | const char *file;
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199 | int filelen;
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200 | };
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201 |
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202 | static struct file_st *win32_splitter(DSO *dso, const char *filename,
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203 | int assume_last_is_dir)
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204 | {
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205 | struct file_st *result = NULL;
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206 | enum { IN_NODE, IN_DEVICE, IN_FILE } position;
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207 | const char *start = filename;
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208 | char last;
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209 |
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210 | if (!filename) {
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211 | DSOerr(DSO_F_WIN32_SPLITTER, DSO_R_NO_FILENAME);
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212 | /*
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213 | * goto err;
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214 | */
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215 | return (NULL);
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216 | }
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217 |
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218 | result = OPENSSL_zalloc(sizeof(*result));
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219 | if (result == NULL) {
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220 | DSOerr(DSO_F_WIN32_SPLITTER, ERR_R_MALLOC_FAILURE);
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221 | return (NULL);
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222 | }
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223 |
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224 | position = IN_DEVICE;
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225 |
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226 | if ((filename[0] == '\\' && filename[1] == '\\')
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227 | || (filename[0] == '/' && filename[1] == '/')) {
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228 | position = IN_NODE;
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229 | filename += 2;
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230 | start = filename;
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231 | result->node = start;
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232 | }
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233 |
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234 | do {
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235 | last = filename[0];
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236 | switch (last) {
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237 | case ':':
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238 | if (position != IN_DEVICE) {
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239 | DSOerr(DSO_F_WIN32_SPLITTER, DSO_R_INCORRECT_FILE_SYNTAX);
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240 | /*
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241 | * goto err;
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242 | */
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243 | OPENSSL_free(result);
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244 | return (NULL);
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245 | }
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246 | result->device = start;
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247 | result->devicelen = (int)(filename - start);
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248 | position = IN_FILE;
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249 | start = ++filename;
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250 | result->dir = start;
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251 | break;
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252 | case '\\':
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253 | case '/':
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254 | if (position == IN_NODE) {
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255 | result->nodelen = (int)(filename - start);
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256 | position = IN_FILE;
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257 | start = ++filename;
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258 | result->dir = start;
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259 | } else if (position == IN_DEVICE) {
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260 | position = IN_FILE;
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261 | filename++;
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262 | result->dir = start;
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263 | result->dirlen = (int)(filename - start);
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264 | start = filename;
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265 | } else {
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266 | filename++;
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267 | result->dirlen += (int)(filename - start);
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268 | start = filename;
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269 | }
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270 | break;
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271 | case '\0':
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272 | if (position == IN_NODE) {
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273 | result->nodelen = (int)(filename - start);
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274 | } else {
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275 | if (filename - start > 0) {
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276 | if (assume_last_is_dir) {
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277 | if (position == IN_DEVICE) {
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278 | result->dir = start;
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279 | result->dirlen = 0;
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280 | }
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281 | result->dirlen += (int)(filename - start);
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282 | } else {
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283 | result->file = start;
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284 | result->filelen = (int)(filename - start);
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285 | }
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286 | }
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287 | }
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288 | break;
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289 | default:
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290 | filename++;
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291 | break;
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292 | }
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293 | }
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294 | while (last);
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295 |
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296 | if (!result->nodelen)
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297 | result->node = NULL;
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298 | if (!result->devicelen)
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299 | result->device = NULL;
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300 | if (!result->dirlen)
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301 | result->dir = NULL;
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302 | if (!result->filelen)
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303 | result->file = NULL;
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304 |
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305 | return (result);
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306 | }
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307 |
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308 | static char *win32_joiner(DSO *dso, const struct file_st *file_split)
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309 | {
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310 | int len = 0, offset = 0;
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311 | char *result = NULL;
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312 | const char *start;
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313 |
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314 | if (!file_split) {
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315 | DSOerr(DSO_F_WIN32_JOINER, ERR_R_PASSED_NULL_PARAMETER);
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316 | return (NULL);
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317 | }
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318 | if (file_split->node) {
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319 | len += 2 + file_split->nodelen; /* 2 for starting \\ */
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320 | if (file_split->predir || file_split->dir || file_split->file)
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321 | len++; /* 1 for ending \ */
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322 | } else if (file_split->device) {
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323 | len += file_split->devicelen + 1; /* 1 for ending : */
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324 | }
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325 | len += file_split->predirlen;
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326 | if (file_split->predir && (file_split->dir || file_split->file)) {
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327 | len++; /* 1 for ending \ */
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328 | }
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329 | len += file_split->dirlen;
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330 | if (file_split->dir && file_split->file) {
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331 | len++; /* 1 for ending \ */
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332 | }
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333 | len += file_split->filelen;
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334 |
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335 | if (!len) {
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336 | DSOerr(DSO_F_WIN32_JOINER, DSO_R_EMPTY_FILE_STRUCTURE);
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337 | return (NULL);
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338 | }
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339 |
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340 | result = OPENSSL_malloc(len + 1);
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341 | if (result == NULL) {
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342 | DSOerr(DSO_F_WIN32_JOINER, ERR_R_MALLOC_FAILURE);
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343 | return (NULL);
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344 | }
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345 |
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346 | if (file_split->node) {
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347 | strcpy(&result[offset], "\\\\");
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348 | offset += 2;
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349 | strncpy(&result[offset], file_split->node, file_split->nodelen);
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350 | offset += file_split->nodelen;
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351 | if (file_split->predir || file_split->dir || file_split->file) {
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352 | result[offset] = '\\';
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353 | offset++;
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354 | }
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355 | } else if (file_split->device) {
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356 | strncpy(&result[offset], file_split->device, file_split->devicelen);
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357 | offset += file_split->devicelen;
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358 | result[offset] = ':';
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359 | offset++;
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360 | }
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361 | start = file_split->predir;
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362 | while (file_split->predirlen > (start - file_split->predir)) {
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363 | const char *end = openssl_strnchr(start, '/',
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364 | file_split->predirlen - (start -
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365 | file_split->predir));
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366 | if (!end)
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367 | end = start
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368 | + file_split->predirlen - (start - file_split->predir);
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369 | strncpy(&result[offset], start, end - start);
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370 | offset += (int)(end - start);
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371 | result[offset] = '\\';
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372 | offset++;
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373 | start = end + 1;
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374 | }
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375 | start = file_split->dir;
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376 | while (file_split->dirlen > (start - file_split->dir)) {
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377 | const char *end = openssl_strnchr(start, '/',
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378 | file_split->dirlen - (start -
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379 | file_split->dir));
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380 | if (!end)
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381 | end = start + file_split->dirlen - (start - file_split->dir);
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382 | strncpy(&result[offset], start, end - start);
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383 | offset += (int)(end - start);
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384 | result[offset] = '\\';
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385 | offset++;
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386 | start = end + 1;
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387 | }
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388 | strncpy(&result[offset], file_split->file, file_split->filelen);
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389 | offset += file_split->filelen;
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390 | result[offset] = '\0';
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391 | return (result);
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392 | }
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393 |
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394 | static char *win32_merger(DSO *dso, const char *filespec1,
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395 | const char *filespec2)
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396 | {
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397 | char *merged = NULL;
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398 | struct file_st *filespec1_split = NULL;
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399 | struct file_st *filespec2_split = NULL;
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400 |
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401 | if (!filespec1 && !filespec2) {
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402 | DSOerr(DSO_F_WIN32_MERGER, ERR_R_PASSED_NULL_PARAMETER);
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403 | return (NULL);
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404 | }
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405 | if (!filespec2) {
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406 | merged = OPENSSL_malloc(strlen(filespec1) + 1);
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407 | if (merged == NULL) {
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408 | DSOerr(DSO_F_WIN32_MERGER, ERR_R_MALLOC_FAILURE);
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409 | return (NULL);
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410 | }
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411 | strcpy(merged, filespec1);
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412 | } else if (!filespec1) {
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413 | merged = OPENSSL_malloc(strlen(filespec2) + 1);
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414 | if (merged == NULL) {
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415 | DSOerr(DSO_F_WIN32_MERGER, ERR_R_MALLOC_FAILURE);
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416 | return (NULL);
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417 | }
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418 | strcpy(merged, filespec2);
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419 | } else {
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420 | filespec1_split = win32_splitter(dso, filespec1, 0);
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421 | if (!filespec1_split) {
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422 | DSOerr(DSO_F_WIN32_MERGER, ERR_R_MALLOC_FAILURE);
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423 | return (NULL);
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424 | }
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425 | filespec2_split = win32_splitter(dso, filespec2, 1);
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426 | if (!filespec2_split) {
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427 | DSOerr(DSO_F_WIN32_MERGER, ERR_R_MALLOC_FAILURE);
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428 | OPENSSL_free(filespec1_split);
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429 | return (NULL);
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430 | }
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431 |
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432 | /* Fill in into filespec1_split */
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433 | if (!filespec1_split->node && !filespec1_split->device) {
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434 | filespec1_split->node = filespec2_split->node;
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435 | filespec1_split->nodelen = filespec2_split->nodelen;
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436 | filespec1_split->device = filespec2_split->device;
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437 | filespec1_split->devicelen = filespec2_split->devicelen;
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438 | }
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439 | if (!filespec1_split->dir) {
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440 | filespec1_split->dir = filespec2_split->dir;
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441 | filespec1_split->dirlen = filespec2_split->dirlen;
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442 | } else if (filespec1_split->dir[0] != '\\'
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443 | && filespec1_split->dir[0] != '/') {
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444 | filespec1_split->predir = filespec2_split->dir;
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445 | filespec1_split->predirlen = filespec2_split->dirlen;
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446 | }
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447 | if (!filespec1_split->file) {
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448 | filespec1_split->file = filespec2_split->file;
|
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449 | filespec1_split->filelen = filespec2_split->filelen;
|
---|
450 | }
|
---|
451 |
|
---|
452 | merged = win32_joiner(dso, filespec1_split);
|
---|
453 | }
|
---|
454 | OPENSSL_free(filespec1_split);
|
---|
455 | OPENSSL_free(filespec2_split);
|
---|
456 | return (merged);
|
---|
457 | }
|
---|
458 |
|
---|
459 | static char *win32_name_converter(DSO *dso, const char *filename)
|
---|
460 | {
|
---|
461 | char *translated;
|
---|
462 | int len, transform;
|
---|
463 |
|
---|
464 | len = strlen(filename);
|
---|
465 | transform = ((strstr(filename, "/") == NULL) &&
|
---|
466 | (strstr(filename, "\\") == NULL) &&
|
---|
467 | (strstr(filename, ":") == NULL));
|
---|
468 | if (transform)
|
---|
469 | /* We will convert this to "%s.dll" */
|
---|
470 | translated = OPENSSL_malloc(len + 5);
|
---|
471 | else
|
---|
472 | /* We will simply duplicate filename */
|
---|
473 | translated = OPENSSL_malloc(len + 1);
|
---|
474 | if (translated == NULL) {
|
---|
475 | DSOerr(DSO_F_WIN32_NAME_CONVERTER, DSO_R_NAME_TRANSLATION_FAILED);
|
---|
476 | return (NULL);
|
---|
477 | }
|
---|
478 | if (transform)
|
---|
479 | sprintf(translated, "%s.dll", filename);
|
---|
480 | else
|
---|
481 | sprintf(translated, "%s", filename);
|
---|
482 | return (translated);
|
---|
483 | }
|
---|
484 |
|
---|
485 | static const char *openssl_strnchr(const char *string, int c, size_t len)
|
---|
486 | {
|
---|
487 | size_t i;
|
---|
488 | const char *p;
|
---|
489 | for (i = 0, p = string; i < len && *p; i++, p++) {
|
---|
490 | if (*p == c)
|
---|
491 | return p;
|
---|
492 | }
|
---|
493 | return NULL;
|
---|
494 | }
|
---|
495 |
|
---|
496 | # include <tlhelp32.h>
|
---|
497 | # ifdef _WIN32_WCE
|
---|
498 | # define DLLNAME "TOOLHELP.DLL"
|
---|
499 | # else
|
---|
500 | # ifdef MODULEENTRY32
|
---|
501 | # undef MODULEENTRY32 /* unmask the ASCII version! */
|
---|
502 | # endif
|
---|
503 | # define DLLNAME "KERNEL32.DLL"
|
---|
504 | # endif
|
---|
505 |
|
---|
506 | typedef HANDLE(WINAPI *CREATETOOLHELP32SNAPSHOT) (DWORD, DWORD);
|
---|
507 | typedef BOOL(WINAPI *CLOSETOOLHELP32SNAPSHOT) (HANDLE);
|
---|
508 | typedef BOOL(WINAPI *MODULE32) (HANDLE, MODULEENTRY32 *);
|
---|
509 |
|
---|
510 | static void *win32_globallookup(const char *name)
|
---|
511 | {
|
---|
512 | HMODULE dll;
|
---|
513 | HANDLE hModuleSnap = INVALID_HANDLE_VALUE;
|
---|
514 | MODULEENTRY32 me32;
|
---|
515 | CREATETOOLHELP32SNAPSHOT create_snap;
|
---|
516 | CLOSETOOLHELP32SNAPSHOT close_snap;
|
---|
517 | MODULE32 module_first, module_next;
|
---|
518 | union {
|
---|
519 | void *p;
|
---|
520 | FARPROC f;
|
---|
521 | } ret = { NULL };
|
---|
522 |
|
---|
523 | dll = LoadLibrary(TEXT(DLLNAME));
|
---|
524 | if (dll == NULL) {
|
---|
525 | DSOerr(DSO_F_WIN32_GLOBALLOOKUP, DSO_R_UNSUPPORTED);
|
---|
526 | return NULL;
|
---|
527 | }
|
---|
528 |
|
---|
529 | create_snap = (CREATETOOLHELP32SNAPSHOT)
|
---|
530 | GetProcAddress(dll, "CreateToolhelp32Snapshot");
|
---|
531 | if (create_snap == NULL) {
|
---|
532 | FreeLibrary(dll);
|
---|
533 | DSOerr(DSO_F_WIN32_GLOBALLOOKUP, DSO_R_UNSUPPORTED);
|
---|
534 | return NULL;
|
---|
535 | }
|
---|
536 | /* We take the rest for granted... */
|
---|
537 | # ifdef _WIN32_WCE
|
---|
538 | close_snap = (CLOSETOOLHELP32SNAPSHOT)
|
---|
539 | GetProcAddress(dll, "CloseToolhelp32Snapshot");
|
---|
540 | # else
|
---|
541 | close_snap = (CLOSETOOLHELP32SNAPSHOT) CloseHandle;
|
---|
542 | # endif
|
---|
543 | module_first = (MODULE32) GetProcAddress(dll, "Module32First");
|
---|
544 | module_next = (MODULE32) GetProcAddress(dll, "Module32Next");
|
---|
545 |
|
---|
546 | hModuleSnap = (*create_snap) (TH32CS_SNAPMODULE, 0);
|
---|
547 | if (hModuleSnap == INVALID_HANDLE_VALUE) {
|
---|
548 | FreeLibrary(dll);
|
---|
549 | DSOerr(DSO_F_WIN32_GLOBALLOOKUP, DSO_R_UNSUPPORTED);
|
---|
550 | return NULL;
|
---|
551 | }
|
---|
552 |
|
---|
553 | me32.dwSize = sizeof(me32);
|
---|
554 |
|
---|
555 | if (!(*module_first) (hModuleSnap, &me32)) {
|
---|
556 | (*close_snap) (hModuleSnap);
|
---|
557 | FreeLibrary(dll);
|
---|
558 | return NULL;
|
---|
559 | }
|
---|
560 |
|
---|
561 | do {
|
---|
562 | if ((ret.f = GetProcAddress(me32.hModule, name))) {
|
---|
563 | (*close_snap) (hModuleSnap);
|
---|
564 | FreeLibrary(dll);
|
---|
565 | return ret.p;
|
---|
566 | }
|
---|
567 | } while ((*module_next) (hModuleSnap, &me32));
|
---|
568 |
|
---|
569 | (*close_snap) (hModuleSnap);
|
---|
570 | FreeLibrary(dll);
|
---|
571 | return NULL;
|
---|
572 | }
|
---|
573 | #endif /* DSO_WIN32 */
|
---|