--- /dev/null
+/* 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 "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);
+#if 0
+static int win32_unbind_var(DSO *dso, char *symname, void *symptr);
+static int win32_unbind_func(DSO *dso, char *symname, DSO_FUNC_TYPE symptr);
+static int win32_init(DSO *dso);
+static int win32_finish(DSO *dso);
+static long win32_ctrl(DSO *dso, int cmd, long larg, void *parg);
+#endif
+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,
+/* For now, "unbind" doesn't exist */
+#if 0
+ NULL, /* unbind_var */
+ NULL, /* unbind_func */
+#endif
+ 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 = (HINSTANCE *)OPENSSL_malloc(sizeof(HINSTANCE));
+ 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 !*/
+ if(filename != NULL)
+ OPENSSL_free(filename);
+ if(p != NULL)
+ 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;
+ void *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 = GetProcAddress(*ptr, symname);
+ if(sym == NULL)
+ {
+ DSOerr(DSO_F_WIN32_BIND_VAR,DSO_R_SYM_FAILURE);
+ ERR_add_error_data(3, "symname(", symname, ")");
+ return(NULL);
+ }
+ return(sym);
+ }
+
+static DSO_FUNC_TYPE win32_bind_func(DSO *dso, const char *symname)
+ {
+ HINSTANCE *ptr;
+ void *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 = GetProcAddress(*ptr, symname);
+ if(sym == 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);
+ }
+
+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_malloc(sizeof(struct file_st));
+ if(result == NULL)
+ {
+ DSOerr(DSO_F_WIN32_SPLITTER,
+ ERR_R_MALLOC_FAILURE);
+ return(NULL);
+ }
+
+ memset(result, 0, sizeof(struct file_st));
+ 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)
+ {
+ 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;
+ }
+#if 0 /* Not needed, since the directory converter above already appeneded
+ a backslash */
+ if(file_split->predir && (file_split->dir || file_split->file))
+ {
+ result[offset] = '\\'; offset++;
+ }
+#endif
+ 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;
+ }
+#if 0 /* Not needed, since the directory converter above already appeneded
+ a backslash */
+ if(file_split->dir && file_split->file)
+ {
+ result[offset] = '\\'; offset++;
+ }
+#endif
+ 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)
+ {
+ 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)
+ {
+ 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;
+ int len;
+
+ 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
+ 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
+ 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;
+ FARPROC 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 = GetProcAddress(me32.hModule,name)))
+ {
+ (*close_snap)(hModuleSnap);
+ FreeLibrary(dll);
+ return ret;
+ }
+ } while((*module_next)(hModuleSnap,&me32));
+
+ (*close_snap)(hModuleSnap);
+ FreeLibrary(dll);
+ return NULL;
+ }
+#endif /* DSO_WIN32 */
projects / cassiopeia.git / blobdiff