From 49948b4cc0f73d02a8932c525690a35e8efb6ac5 Mon Sep 17 00:00:00 2001
From: Lizzy Fleckenstein <lizzy@vlhl.dev>
Date: Wed, 19 Jun 2024 18:07:47 +0200
Subject: add client

Signed-off-by: Lizzy Fleckenstein <lizzy@vlhl.dev>
---
 src/peer.c | 164 -------------------------------------------------------------
 1 file changed, 164 deletions(-)
 delete mode 100644 src/peer.c

(limited to 'src/peer.c')

diff --git a/src/peer.c b/src/peer.c
deleted file mode 100644
index f984aec..0000000
--- a/src/peer.c
+++ /dev/null
@@ -1,164 +0,0 @@
-// SPDX-FileCopyrightText: 2024 Lizzy Fleckenstein <lizzy@vlhl.dev>
-//
-// SPDX-License-Identifier: AGPL-3.0-or-later
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <poll.h>
-#include <errno.h>
-#include "peer.h"
-
-void peer_init(peer *p, int socket)
-{
-	p->socket = socket;
-	p->disco = false;
-
-	p->in.header = true;
-	p->in.len = 0;
-	p->in.promised = 0;
-	p->in.buffer = malloc(PEER_INBUFFER_SIZE);
-
-	p->out.cursor = 0;
-	p->out.avail = 0;
-	p->out.buffer = malloc(PEER_OUTBUFFER_SIZE);
-}
-
-void peer_free(peer *p)
-{
-	close(p->socket);
-	free(p->in.buffer);
-	free(p->out.buffer);
-}
-
-// in
-
-static void next_in(peer *p, bool header, size_t len)
-{
-	p->in.header = header;
-	p->in.len = 0;
-	p->in.buffer = malloc(p->in.promised = len);
-}
-
-static bool peer_in_ready(peer *p)
-{
-	ssize_t got = read(p->socket, p->in.buffer + p->in.len, p->in.promised - p->in.len);
-	if (got < 0) {
-		switch (errno) {
-			case ECONNRESET:
-				p->disco = true;
-				return true;
-			case EINTR:
-				return peer_in_ready(p); // retry
-			default:
-				perror("read");
-				return false;
-		}
-	}
-
-	p->in.len += got;
-	if (p->in.len == p->in.promised && p->in.len != 0) {
-		if (!p->in.header)
-			return true;
-
-		size_t len = *(pkt_header *) p->in.buffer;
-		if (len > PEER_INBUFFER_SIZE)
-			// TODO: figure out what to do if packet too large (disconnect?)
-			next_in(p, true, sizeof(pkt_header));
-		else
-			next_in(p, false, len);
-	}
-
-	return false;
-}
-
-// out
-
-static void send_raw(peer *p, void *data, size_t len)
-{
-	memcpy(p->out.buffer + p->out.cursor + p->out.avail, data, len);
-	p->out.avail += len;
-}
-
-static bool out_space(peer *p, size_t len)
-{
-	if (len + p->out.avail > PEER_OUTBUFFER_SIZE)
-		return false;
-
-	if (p->out.cursor + p->out.avail + len > PEER_OUTBUFFER_SIZE) {
-		memmove(p->out.buffer, p->out.buffer + p->out.cursor, p->out.avail);
-		p->out.cursor = 0;
-	}
-
-	return true;
-}
-
-bool peer_send(peer *p, void *data, size_t len)
-{
-	if (len > PEER_INBUFFER_SIZE)
-		return false;
-
-	pkt_header hdr = (pkt_header) len;
-
-	if (!out_space(p, sizeof hdr + len))
-		return false;
-
-	send_raw(p, &hdr, sizeof hdr);
-	send_raw(p, data, len);
-
-	return true;
-}
-
-static bool peer_out_ready(peer *p)
-{
-	ssize_t written = write(p->socket, p->out.buffer + p->out.cursor, p->out.avail);
-	if (written < 0) {
-		switch (errno) {
-			case ECONNRESET:
-				p->disco = true;
-				return true;
-			case EINTR:
-				return peer_out_ready(p);
-			default:
-				perror("write");
-				return false;
-		}
-	}
-
-	p->out.avail -= written;
-	if (p->out.avail == 0)
-		p->out.cursor = 0;
-
-	return false;
-}
-
-// poll
-
-struct pollfd peer_prepare(peer *p)
-{
-	struct pollfd pfd = {0};
-
-	pfd.fd = p->socket;
-	if (p->in.len == p->in.promised)
-		next_in(p, true, sizeof(pkt_header));
-
-	pfd.events = POLLIN | (p->out.avail ? POLLOUT : 0);
-
-	return pfd;
-}
-
-bool peer_ready(peer *p, struct pollfd pfd)
-{
-	bool x = false;
-
-	if (pfd.revents & (POLLHUP | POLLERR))
-		p->disco = true;
-
-	if (pfd.revents & POLLIN)
-		x = x || peer_in_ready(p);
-	if (pfd.revents & POLLOUT)
-		x = x || peer_out_ready(p);
-
-	return x;
-}
-- 
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