+
+dcp::DecryptedKDM
+decrypt_kdm_with_helpful_error (dcp::EncryptedKDM kdm)
+{
+ try {
+ return dcp::DecryptedKDM (kdm, Config::instance()->decryption_chain()->key().get());
+ } catch (dcp::KDMDecryptionError& e) {
+ /* Try to flesh out the error a bit */
+ auto const kdm_subject_name = kdm.recipient_x509_subject_name();
+ bool on_chain = false;
+ auto dc = Config::instance()->decryption_chain();
+ for (auto i: dc->root_to_leaf()) {
+ if (i.subject() == kdm_subject_name) {
+ on_chain = true;
+ }
+ }
+ if (!on_chain) {
+ throw KDMError (_("This KDM was not made for DCP-o-matic's decryption certificate."), e.what());
+ } else if (kdm_subject_name != dc->leaf().subject()) {
+ throw KDMError (_("This KDM was made for DCP-o-matic but not for its leaf certificate."), e.what());
+ } else {
+ throw;
+ }
+ }
+}
+
+
+boost::filesystem::path
+default_font_file ()
+{
+ boost::filesystem::path liberation_normal;
+ try {
+ liberation_normal = resources_path() / "LiberationSans-Regular.ttf";
+ if (!boost::filesystem::exists (liberation_normal)) {
+ /* Hack for unit tests */
+ liberation_normal = resources_path() / "fonts" / "LiberationSans-Regular.ttf";
+ }
+ } catch (boost::filesystem::filesystem_error& e) {
+
+ }
+
+ if (!boost::filesystem::exists(liberation_normal)) {
+ liberation_normal = "/usr/share/fonts/truetype/liberation/LiberationSans-Regular.ttf";
+ }
+ if (!boost::filesystem::exists(liberation_normal)) {
+ liberation_normal = "/usr/share/fonts/liberation-sans/LiberationSans-Regular.ttf";
+ }
+
+ return liberation_normal;
+}
+
+
+string
+to_upper (string s)
+{
+ transform (s.begin(), s.end(), s.begin(), ::toupper);
+ return s;
+}
+
+
+/* Set to 1 to print the IDs of some of our threads to stdout on creation */
+#define DCPOMATIC_DEBUG_THREADS 0
+
+#if DCPOMATIC_DEBUG_THREADS
+void
+start_of_thread (string name)
+{
+ std::cout << "THREAD:" << name << ":" << std::hex << pthread_self() << "\n";
+}
+#else
+void
+start_of_thread (string)
+{
+
+}