Add basic module loading and printing of messages.

1 files changed, 44 insertions, 0 deletions

diff --git a/src/module.c b/src/module.c
new file mode 100644
index 0000000..9815c21
--- /dev/null
+++ b/src/module.c
@@ -0,0 +1,44 @@
+
+#include "config.h"
+
+#include "p11-tests.h"
+
+#include <dlfcn.h>
+
+static void *module = NULL;
+CK_FUNCTION_LIST_PTR p11_funcs = NULL;
+
+void
+p11t_module_load(const char *filename)
+{
+	CK_C_GetFunctionList get_function_list;
+	CK_RV rv;
+
+	module = dlopen(filename, RTLD_NOW);
+	if(!module)
+		p11t_msg_fatal("couldn't open library: %s: %s", filename, dlerror());
+
+	/* Lookup the appropriate function in library */
+	get_function_list = (CK_C_GetFunctionList)dlsym (module, "C_GetFunctionList");
+	if(!get_function_list)
+		p11t_msg_fatal("couldn't find C_GetFunctionList function in library: %s: %s", filename, dlerror());
+
+	/* Get the function list */
+	rv = (get_function_list)(&p11_funcs);
+	if(rv != CKR_OK)
+		p11t_msg_fatal("couldn't get function list: %s", p11t_msg_rv(rv));
+
+	/* Make sure we have a compatible version */
+	if(p11_funcs->version.major != CRYPTOKI_VERSION_MAJOR)
+		p11t_msg_fatal("incompatible version of pkcs11 module: %d.%d",
+		               (int)p11_funcs->version.major,
+		               (int)p11_funcs->version.minor);
+}
+
+void
+p11t_module_unload(void)
+{
+	if(module)
+		dlclose(module);
+	module = NULL;
+}