Rename core directory because of autoconf name clash

While doing the checks configure might generate "core" files and will
then try to remove them. Having a "core" directory generates an error
while runing the configure script.

There's no workaround but to rename the core directory.

1 files changed, 141 insertions, 0 deletions

diff --git a/toxcore/friend_requests.c b/toxcore/friend_requests.c
new file mode 100644
index 00000000..d8c6858b
--- /dev/null
+++ b/toxcore/friend_requests.c
@@ -0,0 +1,141 @@
+/* friend_requests.c
+ *
+ * Handle friend requests.
+ *
+ *  Copyright (C) 2013 Tox project All Rights Reserved.
+ *
+ *  This file is part of Tox.
+ *
+ *  Tox 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.
+ *
+ *  Tox 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 Tox.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "friend_requests.h"
+
+/* Try to send a friendrequest to peer with public_key
+   data is the data in the request and length is the length.
+   return -1 if failure.
+   return  0 if it sent the friend request directly to the friend.
+   return the number of peers it was routed through if it did not send it directly.*/
+int send_friendrequest(DHT *dht, uint8_t *public_key, uint32_t nospam_num, uint8_t *data, uint32_t length)
+{
+    if (length + sizeof(nospam_num) > MAX_DATA_SIZE)
+        return -1;
+
+    uint8_t temp[MAX_DATA_SIZE];
+    memcpy(temp, &nospam_num, sizeof(nospam_num));
+    memcpy(temp + sizeof(nospam_num), data, length);
+    uint8_t packet[MAX_DATA_SIZE];
+    int len = create_request(dht->c->self_public_key, dht->c->self_secret_key, packet, public_key, temp,
+                             length + sizeof(nospam_num),
+                             CRYPTO_PACKET_FRIEND_REQ);
+
+    if (len == -1)
+        return -1;
+
+    IP_Port ip_port = DHT_getfriendip(dht, public_key);
+
+    if (ip_port.ip.i == 1)
+        return -1;
+
+    if (ip_port.ip.i != 0) {
+        if (sendpacket(dht->c->lossless_udp->net->sock, ip_port, packet, len) != -1)
+            return 0;
+
+        return -1;
+    }
+
+    int num = route_tofriend(dht, public_key, packet, len);
+
+    if (num == 0)
+        return -1;
+
+    return num;
+}
+
+
+/*
+ * Set and get the nospam variable used to prevent one type of friend request spam
+ */
+void set_nospam(Friend_Requests *fr, uint32_t num)
+{
+    fr->nospam = num;
+}
+
+uint32_t get_nospam(Friend_Requests *fr)
+{
+    return fr->nospam;
+}
+
+
+/* set the function that will be executed when a friend request is received. */
+void callback_friendrequest(Friend_Requests *fr, void (*function)(uint8_t *, uint8_t *, uint16_t, void *),
+                            void *userdata)
+{
+    fr->handle_friendrequest = function;
+    fr->handle_friendrequest_isset = 1;
+    fr->handle_friendrequest_userdata = userdata;
+}
+
+/*Add to list of received friend requests*/
+static void addto_receivedlist(Friend_Requests *fr, uint8_t *client_id)
+{
+    if (fr->received_requests_index >= MAX_RECEIVED_STORED)
+        fr->received_requests_index = 0;
+
+    memcpy(fr->received_requests[fr->received_requests_index], client_id, crypto_box_PUBLICKEYBYTES);
+    ++fr->received_requests_index;
+}
+
+/* Check if a friend request was already received
+   return 0 if not, 1 if we did  */
+static int request_received(Friend_Requests *fr, uint8_t *client_id)
+{
+    uint32_t i;
+
+    for (i = 0; i < MAX_RECEIVED_STORED; ++i) {
+        if (memcmp(fr->received_requests[i], client_id, crypto_box_PUBLICKEYBYTES) == 0)
+            return 1;
+    }
+
+    return 0;
+}
+
+
+static int friendreq_handlepacket(void *object, IP_Port source, uint8_t *source_pubkey, uint8_t *packet,
+                                  uint32_t length)
+{
+    Friend_Requests *fr = object;
+
+    if (fr->handle_friendrequest_isset == 0)
+        return 1;
+
+    if (length <= sizeof(fr->nospam))
+        return 1;
+
+    if (request_received(fr, source_pubkey))
+        return 1;
+
+    if (memcmp(packet, &fr->nospam, sizeof(fr->nospam)) != 0)
+        return 1;
+
+    addto_receivedlist(fr, source_pubkey);
+    (*fr->handle_friendrequest)(source_pubkey, packet + 4, length - 4, fr->handle_friendrequest_userdata);
+    return 0;
+}
+
+void friendreq_init(Friend_Requests *fr, Net_Crypto *c)
+{
+    cryptopacket_registerhandler(c, CRYPTO_PACKET_FRIEND_REQ, &friendreq_handlepacket, fr);
+}