+{
+ 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);
+}