mirror of
https://github.com/openssl/openssl.git
synced 2024-12-09 05:51:54 +08:00
6c2a56beec
Reviewed-by: Mark J. Cox <mark@awe.com> Reviewed-by: Richard Levitte <levitte@openssl.org> (Merged from https://github.com/openssl/openssl/pull/11526)
675 lines
20 KiB
C
675 lines
20 KiB
C
/*
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* Copyright 2000-2020 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include "e_os.h"
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#include "dso_local.h"
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#if defined(DSO_WIN32)
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# ifdef _WIN32_WCE
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# if _WIN32_WCE < 300
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static FARPROC GetProcAddressA(HMODULE hModule, LPCSTR lpProcName)
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{
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WCHAR lpProcNameW[64];
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int i;
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for (i = 0; lpProcName[i] && i < 64; i++)
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lpProcNameW[i] = (WCHAR)lpProcName[i];
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if (i == 64)
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return NULL;
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lpProcNameW[i] = 0;
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return GetProcAddressW(hModule, lpProcNameW);
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}
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# endif
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# undef GetProcAddress
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# define GetProcAddress GetProcAddressA
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static HINSTANCE LoadLibraryA(LPCSTR lpLibFileName)
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{
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WCHAR *fnamw;
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size_t len_0 = strlen(lpLibFileName) + 1, i;
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# ifdef _MSC_VER
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fnamw = (WCHAR *)_alloca(len_0 * sizeof(WCHAR));
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# else
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fnamw = (WCHAR *)alloca(len_0 * sizeof(WCHAR));
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# endif
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if (fnamw == NULL) {
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SetLastError(ERROR_NOT_ENOUGH_MEMORY);
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return NULL;
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}
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# if defined(_WIN32_WCE) && _WIN32_WCE>=101
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if (!MultiByteToWideChar(CP_ACP, 0, lpLibFileName, len_0, fnamw, len_0))
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# endif
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for (i = 0; i < len_0; i++)
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fnamw[i] = (WCHAR)lpLibFileName[i];
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return LoadLibraryW(fnamw);
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}
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# endif
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/* Part of the hack in "win32_load" ... */
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# define DSO_MAX_TRANSLATED_SIZE 256
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static int win32_load(DSO *dso);
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static int win32_unload(DSO *dso);
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static DSO_FUNC_TYPE win32_bind_func(DSO *dso, const char *symname);
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static char *win32_name_converter(DSO *dso, const char *filename);
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static char *win32_merger(DSO *dso, const char *filespec1,
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const char *filespec2);
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static int win32_pathbyaddr(void *addr, char *path, int sz);
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static void *win32_globallookup(const char *name);
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static const char *openssl_strnchr(const char *string, int c, size_t len);
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DEFINE_STACK_OF(void)
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static DSO_METHOD dso_meth_win32 = {
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"OpenSSL 'win32' shared library method",
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win32_load,
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win32_unload,
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win32_bind_func,
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NULL, /* ctrl */
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win32_name_converter,
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win32_merger,
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NULL, /* init */
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NULL, /* finish */
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win32_pathbyaddr, /* pathbyaddr */
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win32_globallookup
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};
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DSO_METHOD *DSO_METHOD_openssl(void)
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{
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return &dso_meth_win32;
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}
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/*
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* For this DSO_METHOD, our meth_data STACK will contain; (i) a pointer to
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* the handle (HINSTANCE) returned from LoadLibrary(), and copied.
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*/
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static int win32_load(DSO *dso)
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{
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HINSTANCE h = NULL, *p = NULL;
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/* See applicable comments from dso_dl.c */
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char *filename = DSO_convert_filename(dso, NULL);
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if (filename == NULL) {
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DSOerr(DSO_F_WIN32_LOAD, DSO_R_NO_FILENAME);
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goto err;
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}
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h = LoadLibraryA(filename);
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if (h == NULL) {
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DSOerr(DSO_F_WIN32_LOAD, DSO_R_LOAD_FAILED);
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ERR_add_error_data(3, "filename(", filename, ")");
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goto err;
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}
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p = OPENSSL_malloc(sizeof(*p));
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if (p == NULL) {
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DSOerr(DSO_F_WIN32_LOAD, ERR_R_MALLOC_FAILURE);
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goto err;
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}
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*p = h;
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if (!sk_void_push(dso->meth_data, p)) {
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DSOerr(DSO_F_WIN32_LOAD, DSO_R_STACK_ERROR);
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goto err;
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}
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/* Success */
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dso->loaded_filename = filename;
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return 1;
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err:
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/* Cleanup ! */
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OPENSSL_free(filename);
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OPENSSL_free(p);
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if (h != NULL)
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FreeLibrary(h);
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return 0;
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}
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static int win32_unload(DSO *dso)
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{
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HINSTANCE *p;
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if (dso == NULL) {
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DSOerr(DSO_F_WIN32_UNLOAD, ERR_R_PASSED_NULL_PARAMETER);
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return 0;
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}
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if (sk_void_num(dso->meth_data) < 1)
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return 1;
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p = sk_void_pop(dso->meth_data);
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if (p == NULL) {
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DSOerr(DSO_F_WIN32_UNLOAD, DSO_R_NULL_HANDLE);
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return 0;
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}
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if (!FreeLibrary(*p)) {
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DSOerr(DSO_F_WIN32_UNLOAD, DSO_R_UNLOAD_FAILED);
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/*
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* We should push the value back onto the stack in case of a retry.
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*/
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sk_void_push(dso->meth_data, p);
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return 0;
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}
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/* Cleanup */
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OPENSSL_free(p);
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return 1;
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}
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static DSO_FUNC_TYPE win32_bind_func(DSO *dso, const char *symname)
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{
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HINSTANCE *ptr;
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union {
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void *p;
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FARPROC f;
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} sym;
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if ((dso == NULL) || (symname == NULL)) {
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DSOerr(DSO_F_WIN32_BIND_FUNC, ERR_R_PASSED_NULL_PARAMETER);
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return NULL;
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}
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if (sk_void_num(dso->meth_data) < 1) {
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DSOerr(DSO_F_WIN32_BIND_FUNC, DSO_R_STACK_ERROR);
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return NULL;
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}
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ptr = sk_void_value(dso->meth_data, sk_void_num(dso->meth_data) - 1);
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if (ptr == NULL) {
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DSOerr(DSO_F_WIN32_BIND_FUNC, DSO_R_NULL_HANDLE);
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return NULL;
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}
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sym.f = GetProcAddress(*ptr, symname);
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if (sym.p == NULL) {
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DSOerr(DSO_F_WIN32_BIND_FUNC, DSO_R_SYM_FAILURE);
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ERR_add_error_data(3, "symname(", symname, ")");
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return NULL;
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}
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return (DSO_FUNC_TYPE)sym.f;
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}
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struct file_st {
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const char *node;
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int nodelen;
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const char *device;
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int devicelen;
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const char *predir;
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int predirlen;
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const char *dir;
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int dirlen;
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const char *file;
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int filelen;
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};
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static struct file_st *win32_splitter(DSO *dso, const char *filename,
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int assume_last_is_dir)
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{
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struct file_st *result = NULL;
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enum { IN_NODE, IN_DEVICE, IN_FILE } position;
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const char *start = filename;
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char last;
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if (!filename) {
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DSOerr(DSO_F_WIN32_SPLITTER, DSO_R_NO_FILENAME);
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return NULL;
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}
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result = OPENSSL_zalloc(sizeof(*result));
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if (result == NULL) {
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DSOerr(DSO_F_WIN32_SPLITTER, ERR_R_MALLOC_FAILURE);
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return NULL;
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}
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position = IN_DEVICE;
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if ((filename[0] == '\\' && filename[1] == '\\')
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|| (filename[0] == '/' && filename[1] == '/')) {
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position = IN_NODE;
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filename += 2;
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start = filename;
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result->node = start;
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}
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do {
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last = filename[0];
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switch (last) {
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case ':':
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if (position != IN_DEVICE) {
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DSOerr(DSO_F_WIN32_SPLITTER, DSO_R_INCORRECT_FILE_SYNTAX);
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OPENSSL_free(result);
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return NULL;
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}
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result->device = start;
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result->devicelen = (int)(filename - start);
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position = IN_FILE;
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start = ++filename;
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result->dir = start;
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break;
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case '\\':
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case '/':
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if (position == IN_NODE) {
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result->nodelen = (int)(filename - start);
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position = IN_FILE;
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start = ++filename;
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result->dir = start;
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} else if (position == IN_DEVICE) {
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position = IN_FILE;
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filename++;
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result->dir = start;
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result->dirlen = (int)(filename - start);
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start = filename;
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} else {
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filename++;
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result->dirlen += (int)(filename - start);
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start = filename;
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}
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break;
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case '\0':
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if (position == IN_NODE) {
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result->nodelen = (int)(filename - start);
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} else {
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if (filename - start > 0) {
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if (assume_last_is_dir) {
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if (position == IN_DEVICE) {
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result->dir = start;
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result->dirlen = 0;
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}
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result->dirlen += (int)(filename - start);
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} else {
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result->file = start;
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result->filelen = (int)(filename - start);
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}
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}
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}
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break;
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default:
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filename++;
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break;
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}
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}
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while (last);
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if (!result->nodelen)
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result->node = NULL;
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if (!result->devicelen)
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result->device = NULL;
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if (!result->dirlen)
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result->dir = NULL;
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if (!result->filelen)
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result->file = NULL;
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return result;
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}
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static char *win32_joiner(DSO *dso, const struct file_st *file_split)
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{
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int len = 0, offset = 0;
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char *result = NULL;
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const char *start;
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if (!file_split) {
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DSOerr(DSO_F_WIN32_JOINER, ERR_R_PASSED_NULL_PARAMETER);
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return NULL;
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}
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if (file_split->node) {
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len += 2 + file_split->nodelen; /* 2 for starting \\ */
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if (file_split->predir || file_split->dir || file_split->file)
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len++; /* 1 for ending \ */
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} else if (file_split->device) {
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len += file_split->devicelen + 1; /* 1 for ending : */
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}
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len += file_split->predirlen;
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if (file_split->predir && (file_split->dir || file_split->file)) {
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len++; /* 1 for ending \ */
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}
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len += file_split->dirlen;
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if (file_split->dir && file_split->file) {
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len++; /* 1 for ending \ */
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}
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len += file_split->filelen;
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if (!len) {
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DSOerr(DSO_F_WIN32_JOINER, DSO_R_EMPTY_FILE_STRUCTURE);
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return NULL;
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}
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result = OPENSSL_malloc(len + 1);
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if (result == NULL) {
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DSOerr(DSO_F_WIN32_JOINER, ERR_R_MALLOC_FAILURE);
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return NULL;
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}
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if (file_split->node) {
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strcpy(&result[offset], "\\\\");
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offset += 2;
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strncpy(&result[offset], file_split->node, file_split->nodelen);
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offset += file_split->nodelen;
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if (file_split->predir || file_split->dir || file_split->file) {
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result[offset] = '\\';
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offset++;
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}
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} else if (file_split->device) {
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strncpy(&result[offset], file_split->device, file_split->devicelen);
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offset += file_split->devicelen;
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result[offset] = ':';
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offset++;
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}
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start = file_split->predir;
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while (file_split->predirlen > (start - file_split->predir)) {
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const char *end = openssl_strnchr(start, '/',
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file_split->predirlen - (start -
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file_split->predir));
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if (!end)
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end = start
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+ file_split->predirlen - (start - file_split->predir);
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strncpy(&result[offset], start, end - start);
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offset += (int)(end - start);
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result[offset] = '\\';
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offset++;
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start = end + 1;
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}
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start = file_split->dir;
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while (file_split->dirlen > (start - file_split->dir)) {
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const char *end = openssl_strnchr(start, '/',
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file_split->dirlen - (start -
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file_split->dir));
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if (!end)
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end = start + file_split->dirlen - (start - file_split->dir);
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strncpy(&result[offset], start, end - start);
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offset += (int)(end - start);
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result[offset] = '\\';
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offset++;
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start = end + 1;
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}
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strncpy(&result[offset], file_split->file, file_split->filelen);
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offset += file_split->filelen;
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result[offset] = '\0';
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return result;
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}
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static char *win32_merger(DSO *dso, const char *filespec1,
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const char *filespec2)
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{
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char *merged = NULL;
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struct file_st *filespec1_split = NULL;
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struct file_st *filespec2_split = NULL;
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if (!filespec1 && !filespec2) {
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DSOerr(DSO_F_WIN32_MERGER, ERR_R_PASSED_NULL_PARAMETER);
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return NULL;
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}
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if (!filespec2) {
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merged = OPENSSL_strdup(filespec1);
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if (merged == NULL) {
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DSOerr(DSO_F_WIN32_MERGER, ERR_R_MALLOC_FAILURE);
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return NULL;
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}
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} else if (!filespec1) {
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merged = OPENSSL_strdup(filespec2);
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if (merged == NULL) {
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DSOerr(DSO_F_WIN32_MERGER, ERR_R_MALLOC_FAILURE);
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return NULL;
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}
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} else {
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filespec1_split = win32_splitter(dso, filespec1, 0);
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if (!filespec1_split) {
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DSOerr(DSO_F_WIN32_MERGER, ERR_R_MALLOC_FAILURE);
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return NULL;
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}
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filespec2_split = win32_splitter(dso, filespec2, 1);
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if (!filespec2_split) {
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DSOerr(DSO_F_WIN32_MERGER, ERR_R_MALLOC_FAILURE);
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OPENSSL_free(filespec1_split);
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return NULL;
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}
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/* Fill in into filespec1_split */
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if (!filespec1_split->node && !filespec1_split->device) {
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filespec1_split->node = filespec2_split->node;
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filespec1_split->nodelen = filespec2_split->nodelen;
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filespec1_split->device = filespec2_split->device;
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filespec1_split->devicelen = filespec2_split->devicelen;
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}
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if (!filespec1_split->dir) {
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filespec1_split->dir = filespec2_split->dir;
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filespec1_split->dirlen = filespec2_split->dirlen;
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} else if (filespec1_split->dir[0] != '\\'
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&& filespec1_split->dir[0] != '/') {
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filespec1_split->predir = filespec2_split->dir;
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filespec1_split->predirlen = filespec2_split->dirlen;
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}
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if (!filespec1_split->file) {
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filespec1_split->file = filespec2_split->file;
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filespec1_split->filelen = filespec2_split->filelen;
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}
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merged = win32_joiner(dso, filespec1_split);
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}
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OPENSSL_free(filespec1_split);
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OPENSSL_free(filespec2_split);
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return merged;
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}
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static char *win32_name_converter(DSO *dso, const char *filename)
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{
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char *translated;
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int len, transform;
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len = strlen(filename);
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transform = ((strstr(filename, "/") == NULL) &&
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(strstr(filename, "\\") == NULL) &&
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(strstr(filename, ":") == NULL));
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if (transform)
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/* We will convert this to "%s.dll" */
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translated = OPENSSL_malloc(len + 5);
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else
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/* We will simply duplicate filename */
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translated = OPENSSL_malloc(len + 1);
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if (translated == NULL) {
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DSOerr(DSO_F_WIN32_NAME_CONVERTER, DSO_R_NAME_TRANSLATION_FAILED);
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return NULL;
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}
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if (transform)
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sprintf(translated, "%s.dll", filename);
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else
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sprintf(translated, "%s", filename);
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return translated;
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}
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static const char *openssl_strnchr(const char *string, int c, size_t len)
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{
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size_t i;
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const char *p;
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for (i = 0, p = string; i < len && *p; i++, p++) {
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if (*p == c)
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return p;
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}
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return NULL;
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}
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# include <tlhelp32.h>
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# ifdef _WIN32_WCE
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# define DLLNAME "TOOLHELP.DLL"
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# else
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# ifdef MODULEENTRY32
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# undef MODULEENTRY32 /* unmask the ASCII version! */
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# endif
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# define DLLNAME "KERNEL32.DLL"
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# endif
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typedef HANDLE(WINAPI *CREATETOOLHELP32SNAPSHOT) (DWORD, DWORD);
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typedef BOOL(WINAPI *CLOSETOOLHELP32SNAPSHOT) (HANDLE);
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typedef BOOL(WINAPI *MODULE32) (HANDLE, MODULEENTRY32 *);
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static int win32_pathbyaddr(void *addr, char *path, int sz)
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{
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HMODULE dll;
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HANDLE hModuleSnap = INVALID_HANDLE_VALUE;
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MODULEENTRY32 me32;
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CREATETOOLHELP32SNAPSHOT create_snap;
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CLOSETOOLHELP32SNAPSHOT close_snap;
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MODULE32 module_first, module_next;
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if (addr == NULL) {
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union {
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int (*f) (void *, char *, int);
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void *p;
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} t = {
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win32_pathbyaddr
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};
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addr = t.p;
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}
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dll = LoadLibrary(TEXT(DLLNAME));
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if (dll == NULL) {
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DSOerr(DSO_F_WIN32_PATHBYADDR, DSO_R_UNSUPPORTED);
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return -1;
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}
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create_snap = (CREATETOOLHELP32SNAPSHOT)
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GetProcAddress(dll, "CreateToolhelp32Snapshot");
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if (create_snap == NULL) {
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FreeLibrary(dll);
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DSOerr(DSO_F_WIN32_PATHBYADDR, DSO_R_UNSUPPORTED);
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return -1;
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}
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/* We take the rest for granted... */
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# ifdef _WIN32_WCE
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close_snap = (CLOSETOOLHELP32SNAPSHOT)
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GetProcAddress(dll, "CloseToolhelp32Snapshot");
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# else
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close_snap = (CLOSETOOLHELP32SNAPSHOT) CloseHandle;
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# endif
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module_first = (MODULE32) GetProcAddress(dll, "Module32First");
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module_next = (MODULE32) GetProcAddress(dll, "Module32Next");
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/*
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* Take a snapshot of current process which includes
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* list of all involved modules.
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*/
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hModuleSnap = (*create_snap) (TH32CS_SNAPMODULE, 0);
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if (hModuleSnap == INVALID_HANDLE_VALUE) {
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FreeLibrary(dll);
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DSOerr(DSO_F_WIN32_PATHBYADDR, DSO_R_UNSUPPORTED);
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return -1;
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}
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me32.dwSize = sizeof(me32);
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if (!(*module_first) (hModuleSnap, &me32)) {
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(*close_snap) (hModuleSnap);
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FreeLibrary(dll);
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DSOerr(DSO_F_WIN32_PATHBYADDR, DSO_R_FAILURE);
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return -1;
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}
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/* Enumerate the modules to find one which includes me. */
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do {
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if ((size_t) addr >= (size_t) me32.modBaseAddr &&
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(size_t) addr < (size_t) (me32.modBaseAddr + me32.modBaseSize)) {
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(*close_snap) (hModuleSnap);
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FreeLibrary(dll);
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# ifdef _WIN32_WCE
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# if _WIN32_WCE >= 101
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return WideCharToMultiByte(CP_ACP, 0, me32.szExePath, -1,
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path, sz, NULL, NULL);
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# else
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{
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int i, len = (int)wcslen(me32.szExePath);
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if (sz <= 0)
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return len + 1;
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if (len >= sz)
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len = sz - 1;
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for (i = 0; i < len; i++)
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path[i] = (char)me32.szExePath[i];
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path[len++] = '\0';
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return len;
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}
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# endif
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# else
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{
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int len = (int)strlen(me32.szExePath);
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if (sz <= 0)
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return len + 1;
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if (len >= sz)
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len = sz - 1;
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memcpy(path, me32.szExePath, len);
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path[len++] = '\0';
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return len;
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}
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# endif
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}
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} while ((*module_next) (hModuleSnap, &me32));
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(*close_snap) (hModuleSnap);
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FreeLibrary(dll);
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return 0;
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}
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static void *win32_globallookup(const char *name)
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{
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HMODULE dll;
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HANDLE hModuleSnap = INVALID_HANDLE_VALUE;
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MODULEENTRY32 me32;
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CREATETOOLHELP32SNAPSHOT create_snap;
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CLOSETOOLHELP32SNAPSHOT close_snap;
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MODULE32 module_first, module_next;
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union {
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void *p;
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FARPROC f;
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} ret = { NULL };
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dll = LoadLibrary(TEXT(DLLNAME));
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if (dll == NULL) {
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DSOerr(DSO_F_WIN32_GLOBALLOOKUP, DSO_R_UNSUPPORTED);
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return NULL;
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}
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create_snap = (CREATETOOLHELP32SNAPSHOT)
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GetProcAddress(dll, "CreateToolhelp32Snapshot");
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if (create_snap == NULL) {
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FreeLibrary(dll);
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DSOerr(DSO_F_WIN32_GLOBALLOOKUP, DSO_R_UNSUPPORTED);
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return NULL;
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}
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/* We take the rest for granted... */
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# ifdef _WIN32_WCE
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close_snap = (CLOSETOOLHELP32SNAPSHOT)
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GetProcAddress(dll, "CloseToolhelp32Snapshot");
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# else
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close_snap = (CLOSETOOLHELP32SNAPSHOT) CloseHandle;
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# endif
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module_first = (MODULE32) GetProcAddress(dll, "Module32First");
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module_next = (MODULE32) GetProcAddress(dll, "Module32Next");
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hModuleSnap = (*create_snap) (TH32CS_SNAPMODULE, 0);
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if (hModuleSnap == INVALID_HANDLE_VALUE) {
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FreeLibrary(dll);
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DSOerr(DSO_F_WIN32_GLOBALLOOKUP, DSO_R_UNSUPPORTED);
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return NULL;
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}
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me32.dwSize = sizeof(me32);
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if (!(*module_first) (hModuleSnap, &me32)) {
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(*close_snap) (hModuleSnap);
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FreeLibrary(dll);
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return NULL;
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}
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do {
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if ((ret.f = GetProcAddress(me32.hModule, name))) {
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(*close_snap) (hModuleSnap);
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FreeLibrary(dll);
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return ret.p;
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}
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} while ((*module_next) (hModuleSnap, &me32));
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(*close_snap) (hModuleSnap);
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FreeLibrary(dll);
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return NULL;
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}
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#endif /* DSO_WIN32 */
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