[331] | 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 | }
|
---|
| 431 |
|
---|
| 432 | /* Fill in into filespec1_split */
|
---|
| 433 | if (!filespec1_split->node && !filespec1_split->device) {
|
---|
| 434 | filespec1_split->node = filespec2_split->node;
|
---|
| 435 | filespec1_split->nodelen = filespec2_split->nodelen;
|
---|
| 436 | filespec1_split->device = filespec2_split->device;
|
---|
| 437 | filespec1_split->devicelen = filespec2_split->devicelen;
|
---|
| 438 | }
|
---|
| 439 | if (!filespec1_split->dir) {
|
---|
| 440 | filespec1_split->dir = filespec2_split->dir;
|
---|
| 441 | filespec1_split->dirlen = filespec2_split->dirlen;
|
---|
| 442 | } else if (filespec1_split->dir[0] != '\\'
|
---|
| 443 | && filespec1_split->dir[0] != '/') {
|
---|
| 444 | filespec1_split->predir = filespec2_split->dir;
|
---|
| 445 | filespec1_split->predirlen = filespec2_split->dirlen;
|
---|
| 446 | }
|
---|
| 447 | if (!filespec1_split->file) {
|
---|
| 448 | filespec1_split->file = filespec2_split->file;
|
---|
| 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 */
|
---|