repo: init

1 files changed, 64 insertions, 0 deletions

diff --git a/gpg.c b/gpg.c
new file mode 100644
index 0000000..ab7d8dd
--- /dev/null
+++ b/gpg.c
@@ -0,0 +1,64 @@
+#include <stdio.h>
+#include <locale.h>
+
+#include <gpgme.h>
+
+#include "gpg.h"
+
+#define fail_if_err(err) \
+	if (err) { \
+		fprintf(stderr, "%s:%d: %s: %s\n", __FILE__, __LINE__, \
+		      gpgme_strsource(err), gpgme_strerror(err)); \
+		gpg_cleanup(); \
+		return 1; \
+	}
+
+static gpgme_ctx_t ctx = NULL;
+static gpgme_key_t key = NULL;
+
+int gpg_init(void);
+void gpg_cleanup(void);
+
+int gpg_init(void)
+{
+	gpgme_error_t err;
+	const char *local = setlocale(LC_ALL, "");
+	
+	gpgme_check_version(NULL);
+	gpgme_set_locale(NULL, LC_CTYPE, local);
+#ifdef LC_MESSAGES
+	gpgme_set_locale(NULL, LC_MESSAGES, local);
+#endif
+
+	err = gpgme_engine_check_version(GPGME_PROTOCOL_OpenPGP);
+	fail_if_err(err);
+	err = gpgme_new(&ctx);
+	fail_if_err(err);
+
+	return 0;
+}
+
+void gpg_cleanup(void)
+{
+	if (ctx)
+		gpgme_key_release(key);
+	if (key)
+		gpgme_release(ctx);
+}
+
+int gpg_key_validate(const char *fpr)
+{
+	int r;
+	gpgme_error_t err;
+
+	r = gpg_init();
+	if (r)
+		return r;
+
+	err = gpgme_get_key(ctx, fpr, &key, 1);
+	fail_if_err(err);
+
+	gpg_cleanup();
+
+	return 0;
+}