1 files changed, 95 insertions, 0 deletions
diff --git a/auth-options.h b/auth-options.h
new file mode 100644
index 0000000..0462983
--- /dev/null
+++ b/auth-options.h
@@ -0,0 +1,95 @@
+/* $OpenBSD: auth-options.h,v 1.27 2018/06/06 18:23:32 djm Exp $ */
+
+/*
+ * Copyright (c) 2018 Damien Miller <djm@mindrot.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef AUTH_OPTIONS_H
+#define AUTH_OPTIONS_H
+
+struct passwd;
+struct sshkey;
+
+/*
+ * sshauthopt represents key options parsed from authorized_keys or
+ * from certificate extensions/options.
+ */
+struct sshauthopt {
+	/* Feature flags */
+	int permit_port_forwarding_flag;
+	int permit_agent_forwarding_flag;
+	int permit_x11_forwarding_flag;
+	int permit_pty_flag;
+	int permit_user_rc;
+
+	/* "restrict" keyword was invoked */
+	int restricted;
+
+	/* key/principal expiry date */
+	uint64_t valid_before;
+
+	/* Certificate-related options */
+	int cert_authority;
+	char *cert_principals;
+
+	int force_tun_device;
+	char *force_command;
+
+	/* Custom environment */
+	size_t nenv;
+	char **env;
+
+	/* Permitted port forwardings */
+	size_t npermitopen;
+	char **permitopen;
+
+	/* Permitted listens (remote forwarding) */
+	size_t npermitlisten;
+	char **permitlisten;
+
+	/*
+	 * Permitted host/addresses (comma-separated)
+	 * Caller must check source address matches both lists (if present).
+	 */
+	char *required_from_host_cert;
+	char *required_from_host_keys;
+};
+
+struct sshauthopt *sshauthopt_new(void);
+struct sshauthopt *sshauthopt_new_with_keys_defaults(void);
+void sshauthopt_free(struct sshauthopt *opts);
+struct sshauthopt *sshauthopt_copy(const struct sshauthopt *orig);
+int sshauthopt_serialise(const struct sshauthopt *opts, struct sshbuf *m, int);
+int sshauthopt_deserialise(struct sshbuf *m, struct sshauthopt **opts);
+
+/*
+ * Parse authorized_keys options. Returns an options structure on success
+ * or NULL on failure. Will set errstr on failure.
+ */
+struct sshauthopt *sshauthopt_parse(const char *s, const char **errstr);
+
+/*
+ * Parse certification options to a struct sshauthopt.
+ * Returns options on success or NULL on failure.
+ */
+struct sshauthopt *sshauthopt_from_cert(struct sshkey *k);
+
+/*
+ * Merge key options.
+ */
+struct sshauthopt *sshauthopt_merge(const struct sshauthopt *primary,
+    const struct sshauthopt *additional, const char **errstrp);
+
+#endif