- {
- return((dso == NULL) ? 0 : dso->flags);
- }
-
-
-int DSO_up(DSO *dso)
- {
- if (dso == NULL)
- {
- DSOerr(DSO_F_DSO_UP,ERR_R_PASSED_NULL_PARAMETER);
- return(0);
- }
-
- CRYPTO_add(&dso->references,1,CRYPTO_LOCK_DSO);
- return(1);
- }
-
-DSO *DSO_load(DSO *dso, char *filename, DSO_METHOD *meth)
- {
- DSO *ret;
- int allocated = 0;
-
- if(filename == NULL)
- {
- DSOerr(DSO_F_DSO_LOAD,ERR_R_PASSED_NULL_PARAMETER);
- return(NULL);
- }
- if(dso == NULL)
- {
- ret = DSO_new_method(meth);
- if(ret == NULL)
- {
- DSOerr(DSO_F_DSO_LOAD,ERR_R_MALLOC_FAILURE);
- return(NULL);
- }
- allocated = 1;
- }
- else
- ret = dso;
- if(ret->meth->dso_load == NULL)
- {
- DSOerr(DSO_F_DSO_LOAD,DSO_R_UNSUPPORTED);
- if(allocated)
- DSO_free(ret);
- return(NULL);
- }
- if(!ret->meth->dso_load(ret, filename))
- {
- DSOerr(DSO_F_DSO_LOAD,DSO_R_LOAD_FAILED);
- if(allocated)
- DSO_free(ret);
- return(NULL);
- }
- /* Load succeeded */
- return(ret);
- }
-
-void *DSO_bind(DSO *dso, char *symname)
- {
- void *ret = NULL;
-
- if((dso == NULL) || (symname == NULL))
- {
- DSOerr(DSO_F_DSO_BIND,ERR_R_PASSED_NULL_PARAMETER);
- return(NULL);
- }
- if(dso->meth->dso_bind == NULL)
- {
- DSOerr(DSO_F_DSO_BIND,DSO_R_UNSUPPORTED);
- return(NULL);
- }
- if(!dso->meth->dso_bind(dso, symname, &ret))
- {
- DSOerr(DSO_F_DSO_BIND,DSO_R_SYM_FAILURE);
- return(NULL);
- }
- /* Success */
- return(ret);
- }
+{
+ return ((dso == NULL) ? 0 : dso->flags);
+}
+
+int DSO_up_ref(DSO *dso)
+{
+ int i;
+
+ if (dso == NULL) {
+ DSOerr(DSO_F_DSO_UP_REF, ERR_R_PASSED_NULL_PARAMETER);
+ return 0;
+ }
+
+ if (CRYPTO_atomic_add(&dso->references, 1, &i, dso->lock) <= 0)
+ return 0;
+
+ REF_PRINT_COUNT("DSO", r);
+ REF_ASSERT_ISNT(i < 2);
+ return ((i > 1) ? 1 : 0);
+}
+
+DSO *DSO_load(DSO *dso, const char *filename, DSO_METHOD *meth, int flags)
+{
+ DSO *ret;
+ int allocated = 0;
+
+ if (dso == NULL) {
+ ret = DSO_new_method(meth);
+ if (ret == NULL) {
+ DSOerr(DSO_F_DSO_LOAD, ERR_R_MALLOC_FAILURE);
+ goto err;
+ }
+ allocated = 1;
+ /* Pass the provided flags to the new DSO object */
+ if (DSO_ctrl(ret, DSO_CTRL_SET_FLAGS, flags, NULL) < 0) {
+ DSOerr(DSO_F_DSO_LOAD, DSO_R_CTRL_FAILED);
+ goto err;
+ }
+ } else
+ ret = dso;
+ /* Don't load if we're currently already loaded */
+ if (ret->filename != NULL) {
+ DSOerr(DSO_F_DSO_LOAD, DSO_R_DSO_ALREADY_LOADED);
+ goto err;
+ }
+ /*
+ * filename can only be NULL if we were passed a dso that already has one
+ * set.
+ */
+ if (filename != NULL)
+ if (!DSO_set_filename(ret, filename)) {
+ DSOerr(DSO_F_DSO_LOAD, DSO_R_SET_FILENAME_FAILED);
+ goto err;
+ }
+ filename = ret->filename;
+ if (filename == NULL) {
+ DSOerr(DSO_F_DSO_LOAD, DSO_R_NO_FILENAME);
+ goto err;
+ }
+ if (ret->meth->dso_load == NULL) {
+ DSOerr(DSO_F_DSO_LOAD, DSO_R_UNSUPPORTED);
+ goto err;
+ }
+ if (!ret->meth->dso_load(ret)) {
+ DSOerr(DSO_F_DSO_LOAD, DSO_R_LOAD_FAILED);
+ goto err;
+ }
+ /* Load succeeded */
+ return (ret);
+ err:
+ if (allocated)
+ DSO_free(ret);
+ return (NULL);
+}
+
+DSO_FUNC_TYPE DSO_bind_func(DSO *dso, const char *symname)
+{
+ DSO_FUNC_TYPE ret = NULL;
+
+ if ((dso == NULL) || (symname == NULL)) {
+ DSOerr(DSO_F_DSO_BIND_FUNC, ERR_R_PASSED_NULL_PARAMETER);
+ return (NULL);
+ }
+ if (dso->meth->dso_bind_func == NULL) {
+ DSOerr(DSO_F_DSO_BIND_FUNC, DSO_R_UNSUPPORTED);
+ return (NULL);
+ }
+ if ((ret = dso->meth->dso_bind_func(dso, symname)) == NULL) {
+ DSOerr(DSO_F_DSO_BIND_FUNC, DSO_R_SYM_FAILURE);
+ return (NULL);
+ }
+ /* Success */
+ return (ret);
+}
+
+/*
+ * I don't really like these *_ctrl functions very much to be perfectly
+ * honest. For one thing, I think I have to return a negative value for any
+ * error because possible DSO_ctrl() commands may return values such as
+ * "size"s that can legitimately be zero (making the standard
+ * "if (DSO_cmd(...))" form that works almost everywhere else fail at odd
+ * times. I'd prefer "output" values to be passed by reference and the return
+ * value as success/failure like usual ... but we conform when we must... :-)
+ */
+long DSO_ctrl(DSO *dso, int cmd, long larg, void *parg)
+{
+ 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);
+}
+
+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);
+}