p11_kit_override_system_files: introduced new function

That allows overriding the default module and configuration
locations, for use in test suites, etc.

Signed-off-by: Nikos Mavrogiannopoulos <nmav@gnutls.org>

3 files changed, 59 insertions, 5 deletions

diff --git a/p11-kit/modules.c b/p11-kit/modules.c
index 3b2a949..fb99e31 100644
--- a/p11-kit/modules.c
+++ b/p11-kit/modules.c
@@ -1,6 +1,7 @@
 /*
  * Copyright (C) 2008 Stefan Walter
  * Copyright (C) 2011 Collabora Ltd.
+ * Copyright (C) 2017 Red Hat, Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -185,6 +186,51 @@ const char *p11_config_user_modules = P11_USER_CONFIG_MODULES;
  * P11-KIT FUNCTIONALITY
  */
 
+/**
+ * p11_kit_override_system_files:
+ * @system_conf: the system configuration file (default: system_config_dir/pkcs11.conf)
+ * @user_conf: the user configuration file (default: ~/.config/pkcs11/pkcs11.conf)
+ * @package_modules: location of modules shipped by p11-kit (default: system_config/modules)
+ * @system_modules: location of system pkcs11 modules (default: system_config/modules)
+ * @user_modules: location of user modules (default: ~/.config/pkcs11/modules)
+ *
+ * Overrides the default system configuration files. The
+ * provided values should be accessible for the lifetime
+ * of p11-kit usage.
+ *
+ * When the value %NULL is provided for any of the locations,
+ * it will not be updated.
+ *
+ * This is function intended to be used in test suites and
+ * not production, and as such %P11_KIT_FUTURE_UNSTABLE_API
+ * must be defined before including p11-kit.h.
+ *
+ * Since: 0.23.10
+ *
+ */
+void
+p11_kit_override_system_files (const char *system_conf,
+                               const char *user_conf,
+                               const char *package_modules,
+                               const char *system_modules,
+                               const char *user_modules)
+{
+	if (system_conf)
+		p11_config_system_file = system_conf;
+
+	if (user_conf)
+		p11_config_user_file = user_conf;
+
+	if (package_modules)
+		p11_config_package_modules = package_modules;
+
+	if (system_modules)
+		p11_config_system_modules = system_modules;
+
+	if (user_modules)
+		p11_config_user_modules = user_modules;
+}
+
 static CK_RV
 create_mutex (CK_VOID_PTR_PTR mut)
 {
diff --git a/p11-kit/p11-kit.h b/p11-kit/p11-kit.h
index a266c35..2a3a740 100644
--- a/p11-kit/p11-kit.h
+++ b/p11-kit/p11-kit.h
@@ -111,6 +111,11 @@ void                   p11_kit_be_loud                      (void);
 
 void                   p11_kit_set_progname                 (const char *progname);
 
+void                   p11_kit_override_system_files        (const char *system_conf,
+                                                             const char *user_conf,
+                                                             const char *package_modules,
+                                                             const char *system_modules,
+						             const char *user_modules);
 #endif
 
 const char *           p11_kit_message                      (void);
diff --git a/p11-kit/test-transport.c b/p11-kit/test-transport.c
index f9c1954..1a9f603 100644
--- a/p11-kit/test-transport.c
+++ b/p11-kit/test-transport.c
@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2012 Stefan Walter
- * Copyright (c) 2012 Red Hat Inc.
+ * Copyright (c) 2012-2017 Red Hat Inc.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -40,6 +40,7 @@
 #include "mock.h"
 #include "path.h"
 #include "private.h"
+
 #include "p11-kit.h"
 #include "rpc.h"
 
@@ -87,8 +88,9 @@ setup_remote (void *unused)
 	data = "remote: |" BUILDDIR "/p11-kit/p11-kit" EXEEXT " remote " BUILDDIR "/.libs/mock-five" SHLEXT "\nx-init-reserved: initialize-arg";
 	p11_test_file_write (test.user_modules, "init-arg.module", data, strlen (data));
 
-	p11_config_user_modules = test.user_modules;
-	p11_config_user_file = test.user_config;
+	p11_kit_override_system_files (NULL, test.user_config,
+				       NULL, NULL,
+				       test.user_modules);
 }
 
 static void
@@ -239,8 +241,9 @@ setup_remote_unix (void *unused)
 	p11_test_file_write (test.user_modules, "remote.module", data, strlen (data));
 	free (data);
 
-	p11_config_user_modules = test.user_modules;
-	p11_config_user_file = test.user_config;
+	p11_kit_override_system_files (NULL, test.user_config,
+				       NULL, NULL,
+				       test.user_modules);
 }
 
 static void