+ 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_strdup(filespec1);
+ if (merged == NULL) {
+ DSOerr(DSO_F_WIN32_MERGER, ERR_R_MALLOC_FAILURE);
+ return (NULL);
+ }
+ } else if (!filespec1) {
+ merged = OPENSSL_strdup(filespec2);
+ if (merged == NULL) {
+ DSOerr(DSO_F_WIN32_MERGER, ERR_R_MALLOC_FAILURE);
+ return (NULL);
+ }
+ } 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 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;