1 files changed, 95 insertions, 0 deletions
diff --git a/gpg-interface.h b/gpg-interface.h
new file mode 100644
index 0000000..143cdc1
--- /dev/null
+++ b/gpg-interface.h
@@ -0,0 +1,95 @@
+#ifndef GPG_INTERFACE_H
+#define GPG_INTERFACE_H
+
+struct strbuf;
+
+#define GPG_VERIFY_VERBOSE		1
+#define GPG_VERIFY_RAW			2
+#define GPG_VERIFY_OMIT_STATUS	4
+
+enum signature_trust_level {
+	TRUST_UNDEFINED,
+	TRUST_NEVER,
+	TRUST_MARGINAL,
+	TRUST_FULLY,
+	TRUST_ULTIMATE,
+};
+
+enum payload_type {
+	SIGNATURE_PAYLOAD_UNDEFINED,
+	SIGNATURE_PAYLOAD_COMMIT,
+	SIGNATURE_PAYLOAD_TAG,
+	SIGNATURE_PAYLOAD_PUSH_CERT,
+};
+
+struct signature_check {
+	char *payload;
+	size_t payload_len;
+	enum payload_type payload_type;
+	timestamp_t payload_timestamp;
+	char *output;
+	char *gpg_status;
+
+	/*
+	 * possible "result":
+	 * 0 (not checked)
+	 * N (checked but no further result)
+	 * G (good)
+	 * B (bad)
+	 */
+	char result;
+	char *signer;
+	char *key;
+	char *fingerprint;
+	char *primary_key_fingerprint;
+	enum signature_trust_level trust_level;
+};
+
+void signature_check_clear(struct signature_check *sigc);
+
+/*
+ * Look at a GPG signed tag object.  If such a signature exists, store it in
+ * signature and the signed content in payload.  Return 1 if a signature was
+ * found, and 0 otherwise.
+ */
+int parse_signature(const char *buf, size_t size, struct strbuf *payload, struct strbuf *signature);
+
+/*
+ * Look at GPG signed content (e.g. a signed tag object), whose
+ * payload is followed by a detached signature on it.  Return the
+ * offset where the embedded detached signature begins, or the end of
+ * the data when there is no such signature.
+ */
+size_t parse_signed_buffer(const char *buf, size_t size);
+
+/*
+ * Create a detached signature for the contents of "buffer" and append
+ * it after "signature"; "buffer" and "signature" can be the same
+ * strbuf instance, which would cause the detached signature appended
+ * at the end.
+ */
+int sign_buffer(struct strbuf *buffer, struct strbuf *signature,
+		const char *signing_key);
+
+
+/*
+ * Returns corresponding string in lowercase for a given member of
+ * enum signature_trust_level. For example, `TRUST_ULTIMATE` will
+ * return "ultimate".
+ */
+const char *gpg_trust_level_to_str(enum signature_trust_level level);
+
+void set_signing_key(const char *);
+const char *get_signing_key(void);
+
+/*
+ * Returns a textual unique representation of the signing key in use
+ * Either a GPG KeyID or a SSH Key Fingerprint
+ */
+const char *get_signing_key_id(void);
+int check_signature(struct signature_check *sigc,
+		    const char *signature, size_t slen);
+void print_signature_buffer(const struct signature_check *sigc,
+			    unsigned flags);
+
+#endif