Initial commit of twind - a small and simple gemini daemon

1 files changed, 79 insertions, 0 deletions

diff --git a/twind.h b/twind.h
new file mode 100644
index 0000000..9d9fce3
--- /dev/null
+++ b/twind.h
@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 2021 Matthias Schmidt <xhr@giessen.ccc.de>
+ *
+ * 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 _TWIND_H
+#define _TWIND_H
+
+#include <netinet/in.h>
+
+#include <openssl/ssl.h>
+
+#define VERSION "2021.a"
+#define MAXREQLEN 1025
+#define _PATH_TWIND_ACCESS_LOG "logs/access.log"
+#define _PATH_TWIND_ERROR_LOG "logs/error.log"
+
+enum status_codes {
+	STATUS_INPUT = 10,
+	STATUS_SENSITIVE_INPUT = 11,
+	STATUS_SUCCESS = 20,
+	STATUS_REDIRECT_TEMP = 30,
+	STATUS_REDIRECT_PERM = 31,
+	STATUS_TEMP_UNAVAILABLE = 40,
+	STATUS_SERVER_UNAVAILABLE = 41,
+	STATUS_CGI_ERROR = 42,
+	STATUS_PROXY_ERROR = 43,
+	STATUS_SLOW_DOWN = 44,
+	STATUS_PERM_FAILURE = 50,
+	STATUS_NOT_FOUND = 51,
+	STATUS_GONE = 52,
+	STATUS_PROXY_REQUEST_REFUSED = 53,
+	STATUS_BAD_REQUEST = 59,
+	STATUS_CLIENT_CERT_REQUIRED = 60,
+	STATUS_CERT_NOT_AUTHORIZED = 61,
+	STATUS_CERT_NOT_VALID = 62,
+};
+
+struct client_connection {
+	SSL *ssl_peer;
+	char client_addr[INET6_ADDRSTRLEN];
+};
+
+/* gemini.c */
+int check_gemini_file(const char *);
+int send_response(SSL*, int, const char *, const char *);
+int send_non_success_response(SSL*, int);
+
+/* request.c */
+int get_path_from_request(char *, char *);
+
+/* mime.c */
+char* get_file_extension(const char*);
+char* get_mime_type(const char *);
+
+/* util.c */
+void* xmalloc(size_t);
+char* xstrdup(const char *);
+size_t strlcpy(char *, const char *, size_t);
+
+/* log.c */
+void open_twind_logs(void);
+void close_twind_logs(void);
+void log_access(const struct client_connection *, const char *, ...);
+void log_error(const struct client_connection *, const char *, ...);
+void user_log(int, const char *, ...);
+
+#endif