Initial commit

src/include/connections.h

@@ -0,0 +1,78 @@
+/*
+   swebs - a simple web server
+   Copyright (C) 2022  Nate Choe
+   
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+#ifndef _HAVE_CONNECTIONS
+#define _HAVE_CONNECTIONS
+#include <runner.h>
+#include <sitefile.h>
+
+typedef enum {
+	RECEIVE_REQUEST,
+	RECEIVE_HEADER,
+	RECEIVE_BODY,
+	SEND_RESPONSE,
+} ConnectionSteps;
+
+typedef enum {
+	GET,
+	POST,
+	PUT,
+	HEAD,
+	DELETE,
+	PATCH,
+	OPTIONS,
+} RequestTypes;
+
+typedef struct Connection {
+	int fd;
+	ConnectionSteps progress;
+
+	RequestTypes type;
+	char *path;
+	//ephemeral
+
+	char *(*fields)[2];
+	//pointer to array of 2 pointers, persistent
+	size_t fieldCount;
+	size_t allocatedFields;
+
+	char *body;
+	//ephemeral
+	size_t bodylen;
+	size_t receivedBody;
+
+	struct Connection *next;
+
+	char *currLine;
+	//persistent
+	size_t currLineAlloc;
+	size_t currLineLen;
+} Connection;
+//The 2 types of fields:
+//Persistent fields: Things which aren't freed after a reset, currLine, fields
+//Ephemeral fields: Things which are freed and reallocated after each new
+//request, path, body
+
+int newConnection(Connection *ret, int fd);
+//returns non-zero on error. creates a new connection bound to fd
+void resetConnection(Connection *conn);
+void freeConnection(Connection *conn);
+int updateConnection(Connection *conn, Sitefile *site);
+//returns non-zero on error.
+//Generating a new connection and repeatedly calling updateConnection will
+//handle everything.
+#endif