+{
+ if (dso == NULL) {
+ DSOerr(DSO_F_DSO_CTRL, ERR_R_PASSED_NULL_PARAMETER);
+ return (-1);
+ }
+ /*
+ * We should intercept certain generic commands and only pass control to
+ * the method-specific ctrl() function if it's something we don't handle.
+ */
+ switch (cmd) {
+ case DSO_CTRL_GET_FLAGS:
+ return dso->flags;
+ case DSO_CTRL_SET_FLAGS:
+ dso->flags = (int)larg;
+ return (0);
+ case DSO_CTRL_OR_FLAGS:
+ dso->flags |= (int)larg;
+ return (0);
+ default:
+ break;
+ }
+ if ((dso->meth == NULL) || (dso->meth->dso_ctrl == NULL)) {
+ DSOerr(DSO_F_DSO_CTRL, DSO_R_UNSUPPORTED);
+ return (-1);
+ }
+ return (dso->meth->dso_ctrl(dso, cmd, larg, parg));
+}
+
+const char *DSO_get_filename(DSO *dso)
+{
+ if (dso == NULL) {
+ DSOerr(DSO_F_DSO_GET_FILENAME, ERR_R_PASSED_NULL_PARAMETER);
+ return (NULL);
+ }
+ return (dso->filename);
+}
+
+int DSO_set_filename(DSO *dso, const char *filename)
+{
+ char *copied;
+
+ if ((dso == NULL) || (filename == NULL)) {
+ DSOerr(DSO_F_DSO_SET_FILENAME, ERR_R_PASSED_NULL_PARAMETER);
+ return (0);
+ }
+ if (dso->loaded_filename) {
+ DSOerr(DSO_F_DSO_SET_FILENAME, DSO_R_DSO_ALREADY_LOADED);
+ return (0);
+ }
+ /* We'll duplicate filename */
+ copied = OPENSSL_strdup(filename);
+ if (copied == NULL) {
+ DSOerr(DSO_F_DSO_SET_FILENAME, ERR_R_MALLOC_FAILURE);
+ return (0);
+ }
+ OPENSSL_free(dso->filename);
+ dso->filename = copied;
+ return (1);
+}
+
+char *DSO_merge(DSO *dso, const char *filespec1, const char *filespec2)
+{
+ char *result = NULL;
+
+ if (dso == NULL || filespec1 == NULL) {
+ DSOerr(DSO_F_DSO_MERGE, ERR_R_PASSED_NULL_PARAMETER);
+ return (NULL);
+ }
+ if ((dso->flags & DSO_FLAG_NO_NAME_TRANSLATION) == 0) {
+ if (dso->merger != NULL)
+ result = dso->merger(dso, filespec1, filespec2);
+ else if (dso->meth->dso_merger != NULL)
+ result = dso->meth->dso_merger(dso, filespec1, filespec2);
+ }
+ return (result);
+}
+
+char *DSO_convert_filename(DSO *dso, const char *filename)
+{
+ char *result = NULL;
+
+ if (dso == NULL) {
+ DSOerr(DSO_F_DSO_CONVERT_FILENAME, ERR_R_PASSED_NULL_PARAMETER);
+ return (NULL);
+ }
+ if (filename == NULL)
+ filename = dso->filename;
+ if (filename == NULL) {
+ DSOerr(DSO_F_DSO_CONVERT_FILENAME, DSO_R_NO_FILENAME);
+ return (NULL);
+ }
+ if ((dso->flags & DSO_FLAG_NO_NAME_TRANSLATION) == 0) {
+ if (dso->name_converter != NULL)
+ result = dso->name_converter(dso, filename);
+ else if (dso->meth->dso_name_converter != NULL)
+ result = dso->meth->dso_name_converter(dso, filename);
+ }
+ if (result == NULL) {
+ result = OPENSSL_strdup(filename);
+ if (result == NULL) {
+ DSOerr(DSO_F_DSO_CONVERT_FILENAME, ERR_R_MALLOC_FAILURE);
+ return (NULL);
+ }
+ }
+ return (result);
+}
+
+int DSO_pathbyaddr(void *addr, char *path, int sz)
+{
+ DSO_METHOD *meth = default_DSO_meth;
+ if (meth == NULL)
+ meth = DSO_METHOD_openssl();
+ if (meth->pathbyaddr == NULL) {
+ DSOerr(DSO_F_DSO_PATHBYADDR, DSO_R_UNSUPPORTED);
+ return -1;
+ }
+ return (*meth->pathbyaddr) (addr, path, sz);
+}
+
+DSO *DSO_dsobyaddr(void *addr, int flags)
+{
+ DSO *ret = NULL;
+ char *filename = NULL;
+ int len = DSO_pathbyaddr(addr, NULL, 0);
+
+ if (len < 0)
+ return NULL;
+
+ filename = OPENSSL_malloc(len);
+ if (filename != NULL
+ && DSO_pathbyaddr(addr, filename, len) == len)
+ ret = DSO_load(NULL, filename, NULL, flags);
+
+ OPENSSL_free(filename);
+ return ret;
+}
+
+void *DSO_global_lookup(const char *name)
+{
+ DSO_METHOD *meth = default_DSO_meth;
+ if (meth == NULL)
+ meth = DSO_METHOD_openssl();
+ if (meth->globallookup == NULL) {
+ DSOerr(DSO_F_DSO_GLOBAL_LOOKUP, DSO_R_UNSUPPORTED);
+ return NULL;
+ }
+ return (*meth->globallookup) (name);
+}