Add httpd(8), an attempt to turn the relayd(8) codebase into a simple

web server.  It is not finished yet and I just started it today, but
the goal is to provide an HTTP server that a) provides minimal
features, b) serves static files, c) provides FastCGI support, and d)
follows common coding practices of OpenBSD.

It will neither support plugins, nor custom memory allocators, EBCDIC
support, PCRE or any other things that can be found elsewhere.
httpd(8) is not intended to provide a fully-featured replacement for
nginx(8) or the Apache, but it will provide enough functionality that
is needed in the OpenBSD base system.

ok deraadt@

1 files changed, 139 insertions, 0 deletions

diff --git a/usr.sbin/httpd/http.h b/usr.sbin/httpd/http.h
new file mode 100644
index 00000000000..76d98e3a142
--- /dev/null
+++ b/usr.sbin/httpd/http.h
@@ -0,0 +1,139 @@
+/*	$OpenBSD: http.h,v 1.1 2014/07/12 23:34:54 reyk Exp $	*/
+
+/*
+ * Copyright (c) 2012 - 2014 Reyk Floeter <reyk@openbsd.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 _HTTPD_HTTP_H
+#define _HTTPD_HTTP_H
+
+enum httpmethod {
+	HTTP_METHOD_NONE	= 0,
+
+	/* HTTP/1.1, RFC 2616 */
+	HTTP_METHOD_GET,
+	HTTP_METHOD_HEAD,
+	HTTP_METHOD_POST,
+	HTTP_METHOD_PUT,
+	HTTP_METHOD_DELETE,
+	HTTP_METHOD_OPTIONS,
+	HTTP_METHOD_TRACE,
+	HTTP_METHOD_CONNECT,
+
+	/* WebDAV, RFC 4918 */
+	HTTP_METHOD_PROPFIND,
+	HTTP_METHOD_PROPPATCH,
+	HTTP_METHOD_MKCOL,
+	HTTP_METHOD_COPY,
+	HTTP_METHOD_MOVE,
+	HTTP_METHOD_LOCK,
+	HTTP_METHOD_UNLOCK,
+
+	/* PATCH, RFC 5789 */
+	HTTP_METHOD_PATCH,
+
+	/* Server response (internal value) */
+	HTTP_METHOD_RESPONSE
+};
+
+struct http_method {
+	enum httpmethod		 method_id;
+	const char		*method_name;
+};
+#define HTTP_METHODS		{			\
+	{ HTTP_METHOD_GET,		"GET" },	\
+	{ HTTP_METHOD_HEAD,		"HEAD" },	\
+	{ HTTP_METHOD_POST,		"POST" },	\
+	{ HTTP_METHOD_PUT,		"PUT" },	\
+	{ HTTP_METHOD_DELETE,		"DELETE" },	\
+	{ HTTP_METHOD_OPTIONS,		"OPTIONS" },	\
+	{ HTTP_METHOD_TRACE,		"TRACE" },	\
+	{ HTTP_METHOD_CONNECT,		"CONNECT" },	\
+	{ HTTP_METHOD_PROPFIND,		"PROPFIND" },	\
+	{ HTTP_METHOD_PROPPATCH,	"PROPPATCH" },	\
+	{ HTTP_METHOD_MKCOL,		"MKCOL" },	\
+	{ HTTP_METHOD_COPY,		"COPY" },	\
+	{ HTTP_METHOD_MOVE,		"MOVE" },	\
+	{ HTTP_METHOD_LOCK,		"LOCK" },	\
+	{ HTTP_METHOD_UNLOCK,		"UNLOCK" },	\
+	{ HTTP_METHOD_PATCH,		"PATCH" },	\
+	{ HTTP_METHOD_NONE,		NULL }		\
+}
+
+struct http_error {
+	int			 error_code;
+	const char		*error_name;
+};
+#define HTTP_ERRORS		{			\
+	{ 100,	"Continue" },				\
+	{ 101,	"Switching Protocols" },		\
+	{ 200,	"OK" },					\
+	{ 201,	"Created" },				\
+	{ 202,	"Accepted" },				\
+	{ 203,	"Non-Authorative Information" },	\
+	{ 204,	"No Content" },				\
+	{ 205,	"Reset Content" },			\
+	{ 206,	"Partial Content" },			\
+	{ 300,	"Multiple Choices" },			\
+	{ 301,	"Moved Permanently" },			\
+	{ 302,	"Moved Temporarily" },			\
+	{ 303,	"See Other" },				\
+	{ 304,	"Not Modified" },			\
+	{ 307,	"Temporary Redirect" },			\
+	{ 400,	"Bad Request" },			\
+	{ 401,	"Unauthorized" },			\
+	{ 402,	"Payment Required" },			\
+	{ 403,	"Forbidden" },				\
+	{ 404,	"Not Found" },				\
+	{ 405,	"Method Not Allowed" },			\
+	{ 406,	"Not Acceptable" },			\
+	{ 407,	"Proxy Authentication Required" },	\
+	{ 408,	"Request Timeout" },			\
+	{ 409,	"Conflict" },				\
+	{ 410,	"Gone" },				\
+	{ 411,	"Length Required" },			\
+	{ 412,	"Precondition Failed" },		\
+	{ 413,	"Request Entity Too Large" },		\
+	{ 414,	"Request-URL Too Long" },		\
+	{ 415,	"Unsupported Media Type" },		\
+	{ 416,	"Requested Range Not Satisfiable" },	\
+	{ 417,	"Expectation Failed" },			\
+	{ 500,	"Internal Server Error" },		\
+	{ 501,	"Not Implemented" },			\
+	{ 502,	"Bad Gateway" },			\
+	{ 503,	"Service Unavailable" },		\
+	{ 504,	"Gateway Timeout" },			\
+	{ 505,	"HTTP Version Not Supported" },		\
+	{ 0,	NULL }					\
+}
+
+/* Used during runtime */
+struct http_descriptor {
+	struct kv		 http_pathquery;
+#define http_path		 http_pathquery.kv_key
+#define http_query		 http_pathquery.kv_value
+#define http_rescode		 http_pathquery.kv_key
+#define http_resmesg		 http_pathquery.kv_value
+
+	char			*http_version;
+	enum httpmethod		 http_method;
+	int			 http_chunked;
+
+	/* A tree of headers and attached lists for repeated headers. */
+	struct kvtree		 http_headers;
+	struct kv		*http_lastheader;
+};
+
+#endif /* _HTTPD_HTTP_H */