From 9b3caf1f841cf451ba162bcaf83a96ba0c834a78 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Anton=20Luka=20=C5=A0ijanec?= <anton@sijanec.eu>
Date: Sun, 8 Jan 2023 23:48:11 +0100
Subject: downloading metadata over tcp works, asan reports a memory leak about
 nodes

---
 utils/info.c     | 33 +++++++++++++++++++++++++++++++++
 utils/midpoint.c | 19 -------------------
 2 files changed, 33 insertions(+), 19 deletions(-)
 create mode 100644 utils/info.c

(limited to 'utils')

diff --git a/utils/info.c b/utils/info.c
new file mode 100644
index 0000000..6f082dc
--- /dev/null
+++ b/utils/info.c
@@ -0,0 +1,33 @@
+#include <error.h>
+#include <sys/time.h>
+#include <poll.h>
+#define TORRENT_USERDATA struct dht * dht;
+#define DHT_USERDATA struct pollfd ** pollfds; size_t * pollfds_size; nfds_t * nfds;
+#include <dht.c>
+#define S0(x) (x ? x : "")
+int we_have_disconnected = 0;
+#define DISCONNECTION_MIXIN_BOTTOM we_have_disconnected++;
+#include <tcp.c>
+int main (int argc, char ** argv) {
+	if (argc != 1+3)
+		error_at_line(1, 0, __FILE__, __LINE__, "%s infohash ipv6 port", S0(argv[0]));
+	struct dht * dht = dht_init(NULL);
+	nfds_t nfds = 0;
+	size_t pollfds_size = 1;
+	struct pollfd * pollfds = malloc(sizeof *pollfds);
+	dht->nfds = &nfds;
+	dht->pollfds_size = &pollfds_size;
+	dht->pollfds = &pollfds;
+	dht->connection = connection;
+	dht->verbosity |= incoming_dht | outgoing_dht | expected | debug;
+	dht->torrents = torrent_init();
+	hex2bin(dht->torrents->hash, argv[1], 20);
+	dht->torrents->type = info;
+	dht->torrents->peers = peer_init();
+	inet_pton(AF_INET6, argv[2], dht->torrents->peers->addr.sin6_addr.s6_addr);
+	dht->torrents->peers->addr.sin6_port = htons(atoi(argv[3]));
+	periodic(dht);
+	while (!we_have_disconnected && poll(*dht->pollfds, *dht->nfds, -1) != -1)
+		tcp_work(dht);
+	dht_free(dht);
+}
diff --git a/utils/midpoint.c b/utils/midpoint.c
index 1a2e6f3..c736143 100644
--- a/utils/midpoint.c
+++ b/utils/midpoint.c
@@ -2,25 +2,6 @@
 #include <error.h>
 #define S0(x) (x ? x : "")
 
-/**
- * converts a hexadecimal string to bytes
- *
- * b and h may not overlap, unless they are the same address
- *
- * @param b	[out]	array of bytes to write to with capacity l
- * @param h	[in]	array of hex to read from with 2l hex digits
- * @param l	[in]	length of output array
- */
-
-void hex2bin (unsigned char * b, const char * h, int l) {
-	for (int i = 0; i < l; i++) {
-		char ms = *h++;
-		char ls = *h++;
-		b[i] = (ms >= 'a' ? ms - 'a' + 10 : (ms >= 'A' ? ms - 'A' + 10 : ms - '0')) << 4;
-		b[i] |= (ls >= 'a' ? ls - 'a' + 10 : (ls >= 'A' ? ls - 'A' + 10 : ls - '0'));
-	}
-}
-
 int main (int argc, char ** argv) {
 	if (argc < 3)
 		error_at_line(1, 0, __FILE__, __LINE__, "%s <bin|add|subtract|divide|midpoint> <a> [b]", S0(argv[0]));
-- 
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