| /* dso_win32.c -*- mode:C; c-file-style: "eay" -*- */ |
| /* |
| * Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL project |
| * 2000. |
| */ |
| /* ==================================================================== |
| * Copyright (c) 2000 The OpenSSL Project. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. All advertising materials mentioning features or use of this |
| * software must display the following acknowledgment: |
| * "This product includes software developed by the OpenSSL Project |
| * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" |
| * |
| * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
| * endorse or promote products derived from this software without |
| * prior written permission. For written permission, please contact |
| * licensing@OpenSSL.org. |
| * |
| * 5. Products derived from this software may not be called "OpenSSL" |
| * nor may "OpenSSL" appear in their names without prior written |
| * permission of the OpenSSL Project. |
| * |
| * 6. Redistributions of any form whatsoever must retain the following |
| * acknowledgment: |
| * "This product includes software developed by the OpenSSL Project |
| * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
| * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
| * OF THE POSSIBILITY OF SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This product includes cryptographic software written by Eric Young |
| * (eay@cryptsoft.com). This product includes software written by Tim |
| * Hudson (tjh@cryptsoft.com). |
| * |
| */ |
| |
| #include <stdio.h> |
| #include <string.h> |
| #include "internal/cryptlib.h" |
| #include <openssl/dso.h> |
| |
| #if !defined(DSO_WIN32) |
| DSO_METHOD *DSO_METHOD_win32(void) |
| { |
| return NULL; |
| } |
| #else |
| |
| # ifdef _WIN32_WCE |
| # if _WIN32_WCE < 300 |
| static FARPROC GetProcAddressA(HMODULE hModule, LPCSTR lpProcName) |
| { |
| WCHAR lpProcNameW[64]; |
| int i; |
| |
| for (i = 0; lpProcName[i] && i < 64; i++) |
| lpProcNameW[i] = (WCHAR)lpProcName[i]; |
| if (i == 64) |
| return NULL; |
| lpProcNameW[i] = 0; |
| |
| return GetProcAddressW(hModule, lpProcNameW); |
| } |
| # endif |
| # undef GetProcAddress |
| # define GetProcAddress GetProcAddressA |
| |
| static HINSTANCE LoadLibraryA(LPCSTR lpLibFileName) |
| { |
| WCHAR *fnamw; |
| size_t len_0 = strlen(lpLibFileName) + 1, i; |
| |
| # ifdef _MSC_VER |
| fnamw = (WCHAR *)_alloca(len_0 * sizeof(WCHAR)); |
| # else |
| fnamw = (WCHAR *)alloca(len_0 * sizeof(WCHAR)); |
| # endif |
| if (fnamw == NULL) { |
| SetLastError(ERROR_NOT_ENOUGH_MEMORY); |
| return NULL; |
| } |
| # if defined(_WIN32_WCE) && _WIN32_WCE>=101 |
| if (!MultiByteToWideChar(CP_ACP, 0, lpLibFileName, len_0, fnamw, len_0)) |
| # endif |
| for (i = 0; i < len_0; i++) |
| fnamw[i] = (WCHAR)lpLibFileName[i]; |
| |
| return LoadLibraryW(fnamw); |
| } |
| # endif |
| |
| /* Part of the hack in "win32_load" ... */ |
| # define DSO_MAX_TRANSLATED_SIZE 256 |
| |
| static int win32_load(DSO *dso); |
| static int win32_unload(DSO *dso); |
| static void *win32_bind_var(DSO *dso, const char *symname); |
| static DSO_FUNC_TYPE win32_bind_func(DSO *dso, const char *symname); |
| static char *win32_name_converter(DSO *dso, const char *filename); |
| static char *win32_merger(DSO *dso, const char *filespec1, |
| const char *filespec2); |
| static int win32_pathbyaddr(void *addr, char *path, int sz); |
| static void *win32_globallookup(const char *name); |
| |
| static const char *openssl_strnchr(const char *string, int c, size_t len); |
| |
| static DSO_METHOD dso_meth_win32 = { |
| "OpenSSL 'win32' shared library method", |
| win32_load, |
| win32_unload, |
| win32_bind_var, |
| win32_bind_func, |
| NULL, /* ctrl */ |
| win32_name_converter, |
| win32_merger, |
| NULL, /* init */ |
| NULL, /* finish */ |
| win32_pathbyaddr, |
| win32_globallookup |
| }; |
| |
| DSO_METHOD *DSO_METHOD_win32(void) |
| { |
| return (&dso_meth_win32); |
| } |
| |
| /* |
| * For this DSO_METHOD, our meth_data STACK will contain; (i) a pointer to |
| * the handle (HINSTANCE) returned from LoadLibrary(), and copied. |
| */ |
| |
| static int win32_load(DSO *dso) |
| { |
| HINSTANCE h = NULL, *p = NULL; |
| /* See applicable comments from dso_dl.c */ |
| char *filename = DSO_convert_filename(dso, NULL); |
| |
| if (filename == NULL) { |
| DSOerr(DSO_F_WIN32_LOAD, DSO_R_NO_FILENAME); |
| goto err; |
| } |
| h = LoadLibraryA(filename); |
| if (h == NULL) { |
| DSOerr(DSO_F_WIN32_LOAD, DSO_R_LOAD_FAILED); |
| ERR_add_error_data(3, "filename(", filename, ")"); |
| goto err; |
| } |
| p = OPENSSL_malloc(sizeof(*p)); |
| if (p == NULL) { |
| DSOerr(DSO_F_WIN32_LOAD, ERR_R_MALLOC_FAILURE); |
| goto err; |
| } |
| *p = h; |
| if (!sk_void_push(dso->meth_data, p)) { |
| DSOerr(DSO_F_WIN32_LOAD, DSO_R_STACK_ERROR); |
| goto err; |
| } |
| /* Success */ |
| dso->loaded_filename = filename; |
| return (1); |
| err: |
| /* Cleanup ! */ |
| OPENSSL_free(filename); |
| OPENSSL_free(p); |
| if (h != NULL) |
| FreeLibrary(h); |
| return (0); |
| } |
| |
| static int win32_unload(DSO *dso) |
| { |
| HINSTANCE *p; |
| if (dso == NULL) { |
| DSOerr(DSO_F_WIN32_UNLOAD, ERR_R_PASSED_NULL_PARAMETER); |
| return (0); |
| } |
| if (sk_void_num(dso->meth_data) < 1) |
| return (1); |
| p = sk_void_pop(dso->meth_data); |
| if (p == NULL) { |
| DSOerr(DSO_F_WIN32_UNLOAD, DSO_R_NULL_HANDLE); |
| return (0); |
| } |
| if (!FreeLibrary(*p)) { |
| DSOerr(DSO_F_WIN32_UNLOAD, DSO_R_UNLOAD_FAILED); |
| /* |
| * We should push the value back onto the stack in case of a retry. |
| */ |
| sk_void_push(dso->meth_data, p); |
| return (0); |
| } |
| /* Cleanup */ |
| OPENSSL_free(p); |
| return (1); |
| } |
| |
| /* |
| * Using GetProcAddress for variables? TODO: Check this out in the Win32 API |
| * docs, there's probably a variant for variables. |
| */ |
| static void *win32_bind_var(DSO *dso, const char *symname) |
| { |
| HINSTANCE *ptr; |
| union { |
| void *p; |
| FARPROC f; |
| } sym; |
| |
| if ((dso == NULL) || (symname == NULL)) { |
| DSOerr(DSO_F_WIN32_BIND_VAR, ERR_R_PASSED_NULL_PARAMETER); |
| return (NULL); |
| } |
| if (sk_void_num(dso->meth_data) < 1) { |
| DSOerr(DSO_F_WIN32_BIND_VAR, DSO_R_STACK_ERROR); |
| return (NULL); |
| } |
| ptr = sk_void_value(dso->meth_data, sk_void_num(dso->meth_data) - 1); |
| if (ptr == NULL) { |
| DSOerr(DSO_F_WIN32_BIND_VAR, DSO_R_NULL_HANDLE); |
| return (NULL); |
| } |
| sym.f = GetProcAddress(*ptr, symname); |
| if (sym.p == NULL) { |
| DSOerr(DSO_F_WIN32_BIND_VAR, DSO_R_SYM_FAILURE); |
| ERR_add_error_data(3, "symname(", symname, ")"); |
| return (NULL); |
| } |
| return (sym.p); |
| } |
| |
| static DSO_FUNC_TYPE win32_bind_func(DSO *dso, const char *symname) |
| { |
| HINSTANCE *ptr; |
| union { |
| void *p; |
| FARPROC f; |
| } sym; |
| |
| if ((dso == NULL) || (symname == NULL)) { |
| DSOerr(DSO_F_WIN32_BIND_FUNC, ERR_R_PASSED_NULL_PARAMETER); |
| return (NULL); |
| } |
| if (sk_void_num(dso->meth_data) < 1) { |
| DSOerr(DSO_F_WIN32_BIND_FUNC, DSO_R_STACK_ERROR); |
| return (NULL); |
| } |
| ptr = sk_void_value(dso->meth_data, sk_void_num(dso->meth_data) - 1); |
| if (ptr == NULL) { |
| DSOerr(DSO_F_WIN32_BIND_FUNC, DSO_R_NULL_HANDLE); |
| return (NULL); |
| } |
| sym.f = GetProcAddress(*ptr, symname); |
| if (sym.p == NULL) { |
| DSOerr(DSO_F_WIN32_BIND_FUNC, DSO_R_SYM_FAILURE); |
| ERR_add_error_data(3, "symname(", symname, ")"); |
| return (NULL); |
| } |
| return ((DSO_FUNC_TYPE)sym.f); |
| } |
| |
| struct file_st { |
| const char *node; |
| int nodelen; |
| const char *device; |
| int devicelen; |
| const char *predir; |
| int predirlen; |
| const char *dir; |
| int dirlen; |
| const char *file; |
| int filelen; |
| }; |
| |
| static struct file_st *win32_splitter(DSO *dso, const char *filename, |
| int assume_last_is_dir) |
| { |
| struct file_st *result = NULL; |
| enum { IN_NODE, IN_DEVICE, IN_FILE } position; |
| const char *start = filename; |
| char last; |
| |
| if (!filename) { |
| DSOerr(DSO_F_WIN32_SPLITTER, DSO_R_NO_FILENAME); |
| /* |
| * goto err; |
| */ |
| return (NULL); |
| } |
| |
| result = OPENSSL_zalloc(sizeof(*result)); |
| if (result == NULL) { |
| DSOerr(DSO_F_WIN32_SPLITTER, ERR_R_MALLOC_FAILURE); |
| return (NULL); |
| } |
| |
| position = IN_DEVICE; |
| |
| if ((filename[0] == '\\' && filename[1] == '\\') |
| || (filename[0] == '/' && filename[1] == '/')) { |
| position = IN_NODE; |
| filename += 2; |
| start = filename; |
| result->node = start; |
| } |
| |
| do { |
| last = filename[0]; |
| switch (last) { |
| case ':': |
| if (position != IN_DEVICE) { |
| DSOerr(DSO_F_WIN32_SPLITTER, DSO_R_INCORRECT_FILE_SYNTAX); |
| /* |
| * goto err; |
| */ |
| OPENSSL_free(result); |
| return (NULL); |
| } |
| result->device = start; |
| result->devicelen = (int)(filename - start); |
| position = IN_FILE; |
| start = ++filename; |
| result->dir = start; |
| break; |
| case '\\': |
| case '/': |
| if (position == IN_NODE) { |
| result->nodelen = (int)(filename - start); |
| position = IN_FILE; |
| start = ++filename; |
| result->dir = start; |
| } else if (position == IN_DEVICE) { |
| position = IN_FILE; |
| filename++; |
| result->dir = start; |
| result->dirlen = (int)(filename - start); |
| start = filename; |
| } else { |
| filename++; |
| result->dirlen += (int)(filename - start); |
| start = filename; |
| } |
| break; |
| case '\0': |
| if (position == IN_NODE) { |
| result->nodelen = (int)(filename - start); |
| } else { |
| if (filename - start > 0) { |
| if (assume_last_is_dir) { |
| if (position == IN_DEVICE) { |
| result->dir = start; |
| result->dirlen = 0; |
| } |
| result->dirlen += (int)(filename - start); |
| } else { |
| result->file = start; |
| result->filelen = (int)(filename - start); |
| } |
| } |
| } |
| break; |
| default: |
| filename++; |
| break; |
| } |
| } |
| while (last); |
| |
| if (!result->nodelen) |
| result->node = NULL; |
| if (!result->devicelen) |
| result->device = NULL; |
| if (!result->dirlen) |
| result->dir = NULL; |
| if (!result->filelen) |
| result->file = NULL; |
| |
| return (result); |
| } |
| |
| static char *win32_joiner(DSO *dso, const struct file_st *file_split) |
| { |
| int len = 0, offset = 0; |
| char *result = NULL; |
| const char *start; |
| |
| if (!file_split) { |
| DSOerr(DSO_F_WIN32_JOINER, ERR_R_PASSED_NULL_PARAMETER); |
| return (NULL); |
| } |
| if (file_split->node) { |
| len += 2 + file_split->nodelen; /* 2 for starting \\ */ |
| if (file_split->predir || file_split->dir || file_split->file) |
| len++; /* 1 for ending \ */ |
| } else if (file_split->device) { |
| len += file_split->devicelen + 1; /* 1 for ending : */ |
| } |
| len += file_split->predirlen; |
| if (file_split->predir && (file_split->dir || file_split->file)) { |
| len++; /* 1 for ending \ */ |
| } |
| len += file_split->dirlen; |
| if (file_split->dir && file_split->file) { |
| len++; /* 1 for ending \ */ |
| } |
| len += file_split->filelen; |
| |
| if (!len) { |
| DSOerr(DSO_F_WIN32_JOINER, DSO_R_EMPTY_FILE_STRUCTURE); |
| return (NULL); |
| } |
| |
| result = OPENSSL_malloc(len + 1); |
| if (result == NULL) { |
| DSOerr(DSO_F_WIN32_JOINER, ERR_R_MALLOC_FAILURE); |
| return (NULL); |
| } |
| |
| if (file_split->node) { |
| strcpy(&result[offset], "\\\\"); |
| offset += 2; |
| strncpy(&result[offset], file_split->node, file_split->nodelen); |
| offset += file_split->nodelen; |
| if (file_split->predir || file_split->dir || file_split->file) { |
| result[offset] = '\\'; |
| offset++; |
| } |
| } else if (file_split->device) { |
| strncpy(&result[offset], file_split->device, file_split->devicelen); |
| offset += file_split->devicelen; |
| result[offset] = ':'; |
| offset++; |
| } |
| start = file_split->predir; |
| while (file_split->predirlen > (start - file_split->predir)) { |
| const char *end = openssl_strnchr(start, '/', |
| file_split->predirlen - (start - |
| file_split->predir)); |
| if (!end) |
| end = start |
| + file_split->predirlen - (start - file_split->predir); |
| strncpy(&result[offset], start, end - start); |
| offset += (int)(end - start); |
| result[offset] = '\\'; |
| offset++; |
| start = end + 1; |
| } |
| start = file_split->dir; |
| while (file_split->dirlen > (start - file_split->dir)) { |
| const char *end = openssl_strnchr(start, '/', |
| file_split->dirlen - (start - |
| file_split->dir)); |
| if (!end) |
| end = start + file_split->dirlen - (start - file_split->dir); |
| strncpy(&result[offset], start, end - start); |
| offset += (int)(end - start); |
| result[offset] = '\\'; |
| offset++; |
| start = end + 1; |
| } |
| strncpy(&result[offset], file_split->file, file_split->filelen); |
| offset += file_split->filelen; |
| result[offset] = '\0'; |
| return (result); |
| } |
| |
| static char *win32_merger(DSO *dso, const char *filespec1, |
| const char *filespec2) |
| { |
| char *merged = NULL; |
| struct file_st *filespec1_split = NULL; |
| struct file_st *filespec2_split = NULL; |
| |
| if (!filespec1 && !filespec2) { |
| DSOerr(DSO_F_WIN32_MERGER, ERR_R_PASSED_NULL_PARAMETER); |
| return (NULL); |
| } |
| if (!filespec2) { |
| merged = OPENSSL_malloc(strlen(filespec1) + 1); |
| if (merged == NULL) { |
| DSOerr(DSO_F_WIN32_MERGER, ERR_R_MALLOC_FAILURE); |
| return (NULL); |
| } |
| strcpy(merged, filespec1); |
| } else if (!filespec1) { |
| merged = OPENSSL_malloc(strlen(filespec2) + 1); |
| if (merged == NULL) { |
| DSOerr(DSO_F_WIN32_MERGER, ERR_R_MALLOC_FAILURE); |
| return (NULL); |
| } |
| strcpy(merged, filespec2); |
| } else { |
| filespec1_split = win32_splitter(dso, filespec1, 0); |
| if (!filespec1_split) { |
| DSOerr(DSO_F_WIN32_MERGER, ERR_R_MALLOC_FAILURE); |
| return (NULL); |
| } |
| filespec2_split = win32_splitter(dso, filespec2, 1); |
| if (!filespec2_split) { |
| DSOerr(DSO_F_WIN32_MERGER, ERR_R_MALLOC_FAILURE); |
| OPENSSL_free(filespec1_split); |
| return (NULL); |
| } |
| |
| /* Fill in into filespec1_split */ |
| if (!filespec1_split->node && !filespec1_split->device) { |
| filespec1_split->node = filespec2_split->node; |
| filespec1_split->nodelen = filespec2_split->nodelen; |
| filespec1_split->device = filespec2_split->device; |
| filespec1_split->devicelen = filespec2_split->devicelen; |
| } |
| if (!filespec1_split->dir) { |
| filespec1_split->dir = filespec2_split->dir; |
| filespec1_split->dirlen = filespec2_split->dirlen; |
| } else if (filespec1_split->dir[0] != '\\' |
| && filespec1_split->dir[0] != '/') { |
| filespec1_split->predir = filespec2_split->dir; |
| filespec1_split->predirlen = filespec2_split->dirlen; |
| } |
| if (!filespec1_split->file) { |
| filespec1_split->file = filespec2_split->file; |
| filespec1_split->filelen = filespec2_split->filelen; |
| } |
| |
| merged = win32_joiner(dso, filespec1_split); |
| } |
| OPENSSL_free(filespec1_split); |
| OPENSSL_free(filespec2_split); |
| return (merged); |
| } |
| |
| static char *win32_name_converter(DSO *dso, const char *filename) |
| { |
| char *translated; |
| int len, transform; |
| |
| len = strlen(filename); |
| transform = ((strstr(filename, "/") == NULL) && |
| (strstr(filename, "\\") == NULL) && |
| (strstr(filename, ":") == NULL)); |
| if (transform) |
| /* We will convert this to "%s.dll" */ |
| translated = OPENSSL_malloc(len + 5); |
| else |
| /* We will simply duplicate filename */ |
| translated = OPENSSL_malloc(len + 1); |
| if (translated == NULL) { |
| DSOerr(DSO_F_WIN32_NAME_CONVERTER, DSO_R_NAME_TRANSLATION_FAILED); |
| return (NULL); |
| } |
| if (transform) |
| sprintf(translated, "%s.dll", filename); |
| else |
| sprintf(translated, "%s", filename); |
| return (translated); |
| } |
| |
| static const char *openssl_strnchr(const char *string, int c, size_t len) |
| { |
| size_t i; |
| const char *p; |
| for (i = 0, p = string; i < len && *p; i++, p++) { |
| if (*p == c) |
| return p; |
| } |
| return NULL; |
| } |
| |
| # include <tlhelp32.h> |
| # ifdef _WIN32_WCE |
| # define DLLNAME "TOOLHELP.DLL" |
| # else |
| # ifdef MODULEENTRY32 |
| # undef MODULEENTRY32 /* unmask the ASCII version! */ |
| # endif |
| # define DLLNAME "KERNEL32.DLL" |
| # endif |
| |
| typedef HANDLE(WINAPI *CREATETOOLHELP32SNAPSHOT) (DWORD, DWORD); |
| typedef BOOL(WINAPI *CLOSETOOLHELP32SNAPSHOT) (HANDLE); |
| typedef BOOL(WINAPI *MODULE32) (HANDLE, MODULEENTRY32 *); |
| |
| static int win32_pathbyaddr(void *addr, char *path, int sz) |
| { |
| HMODULE dll; |
| HANDLE hModuleSnap = INVALID_HANDLE_VALUE; |
| MODULEENTRY32 me32; |
| CREATETOOLHELP32SNAPSHOT create_snap; |
| CLOSETOOLHELP32SNAPSHOT close_snap; |
| MODULE32 module_first, module_next; |
| |
| if (addr == NULL) { |
| union { |
| int (*f) (void *, char *, int); |
| void *p; |
| } t = { |
| win32_pathbyaddr |
| }; |
| addr = t.p; |
| } |
| |
| dll = LoadLibrary(TEXT(DLLNAME)); |
| if (dll == NULL) { |
| DSOerr(DSO_F_WIN32_PATHBYADDR, DSO_R_UNSUPPORTED); |
| return -1; |
| } |
| |
| create_snap = (CREATETOOLHELP32SNAPSHOT) |
| GetProcAddress(dll, "CreateToolhelp32Snapshot"); |
| if (create_snap == NULL) { |
| FreeLibrary(dll); |
| DSOerr(DSO_F_WIN32_PATHBYADDR, DSO_R_UNSUPPORTED); |
| return -1; |
| } |
| /* We take the rest for granted... */ |
| # ifdef _WIN32_WCE |
| close_snap = (CLOSETOOLHELP32SNAPSHOT) |
| GetProcAddress(dll, "CloseToolhelp32Snapshot"); |
| # else |
| close_snap = (CLOSETOOLHELP32SNAPSHOT) CloseHandle; |
| # endif |
| module_first = (MODULE32) GetProcAddress(dll, "Module32First"); |
| module_next = (MODULE32) GetProcAddress(dll, "Module32Next"); |
| |
| hModuleSnap = (*create_snap) (TH32CS_SNAPMODULE, 0); |
| if (hModuleSnap == INVALID_HANDLE_VALUE) { |
| FreeLibrary(dll); |
| DSOerr(DSO_F_WIN32_PATHBYADDR, DSO_R_UNSUPPORTED); |
| return -1; |
| } |
| |
| me32.dwSize = sizeof(me32); |
| |
| if (!(*module_first) (hModuleSnap, &me32)) { |
| (*close_snap) (hModuleSnap); |
| FreeLibrary(dll); |
| DSOerr(DSO_F_WIN32_PATHBYADDR, DSO_R_FAILURE); |
| return -1; |
| } |
| |
| do { |
| if ((BYTE *) addr >= me32.modBaseAddr && |
| (BYTE *) addr < me32.modBaseAddr + me32.modBaseSize) { |
| (*close_snap) (hModuleSnap); |
| FreeLibrary(dll); |
| # ifdef _WIN32_WCE |
| # if _WIN32_WCE >= 101 |
| return WideCharToMultiByte(CP_ACP, 0, me32.szExePath, -1, |
| path, sz, NULL, NULL); |
| # else |
| { |
| int i, len = (int)wcslen(me32.szExePath); |
| if (sz <= 0) |
| return len + 1; |
| if (len >= sz) |
| len = sz - 1; |
| for (i = 0; i < len; i++) |
| path[i] = (char)me32.szExePath[i]; |
| path[len++] = 0; |
| return len; |
| } |
| # endif |
| # else |
| { |
| int len = (int)strlen(me32.szExePath); |
| if (sz <= 0) |
| return len + 1; |
| if (len >= sz) |
| len = sz - 1; |
| memcpy(path, me32.szExePath, len); |
| path[len++] = 0; |
| return len; |
| } |
| # endif |
| } |
| } while ((*module_next) (hModuleSnap, &me32)); |
| |
| (*close_snap) (hModuleSnap); |
| FreeLibrary(dll); |
| return 0; |
| } |
| |
| static void *win32_globallookup(const char *name) |
| { |
| HMODULE dll; |
| HANDLE hModuleSnap = INVALID_HANDLE_VALUE; |
| MODULEENTRY32 me32; |
| CREATETOOLHELP32SNAPSHOT create_snap; |
| CLOSETOOLHELP32SNAPSHOT close_snap; |
| MODULE32 module_first, module_next; |
| union { |
| void *p; |
| FARPROC f; |
| } ret = { NULL }; |
| |
| dll = LoadLibrary(TEXT(DLLNAME)); |
| if (dll == NULL) { |
| DSOerr(DSO_F_WIN32_GLOBALLOOKUP, DSO_R_UNSUPPORTED); |
| return NULL; |
| } |
| |
| create_snap = (CREATETOOLHELP32SNAPSHOT) |
| GetProcAddress(dll, "CreateToolhelp32Snapshot"); |
| if (create_snap == NULL) { |
| FreeLibrary(dll); |
| DSOerr(DSO_F_WIN32_GLOBALLOOKUP, DSO_R_UNSUPPORTED); |
| return NULL; |
| } |
| /* We take the rest for granted... */ |
| # ifdef _WIN32_WCE |
| close_snap = (CLOSETOOLHELP32SNAPSHOT) |
| GetProcAddress(dll, "CloseToolhelp32Snapshot"); |
| # else |
| close_snap = (CLOSETOOLHELP32SNAPSHOT) CloseHandle; |
| # endif |
| module_first = (MODULE32) GetProcAddress(dll, "Module32First"); |
| module_next = (MODULE32) GetProcAddress(dll, "Module32Next"); |
| |
| hModuleSnap = (*create_snap) (TH32CS_SNAPMODULE, 0); |
| if (hModuleSnap == INVALID_HANDLE_VALUE) { |
| FreeLibrary(dll); |
| DSOerr(DSO_F_WIN32_GLOBALLOOKUP, DSO_R_UNSUPPORTED); |
| return NULL; |
| } |
| |
| me32.dwSize = sizeof(me32); |
| |
| if (!(*module_first) (hModuleSnap, &me32)) { |
| (*close_snap) (hModuleSnap); |
| FreeLibrary(dll); |
| return NULL; |
| } |
| |
| do { |
| if ((ret.f = GetProcAddress(me32.hModule, name))) { |
| (*close_snap) (hModuleSnap); |
| FreeLibrary(dll); |
| return ret.p; |
| } |
| } while ((*module_next) (hModuleSnap, &me32)); |
| |
| (*close_snap) (hModuleSnap); |
| FreeLibrary(dll); |
| return NULL; |
| } |
| #endif /* DSO_WIN32 */ |
