Added config inis, key refactoring

- CNC can accept multiple different auth keys now
- laikaK_checkAuth() added
- shell defaults to using shell.ini config file
- CNC doesn't require a config file however it's highly recommended

lib/NOTES.md

@@ -0,0 +1,7 @@
+There are some unused features and boilerplate. The unused files include:
+- ltunnel.h
+- ltunnel.c
+- lbox.h
+- lvm.h
+
+These files can be safely removed from the library.

lib/include/lsodium.h

@@ -10,4 +10,6 @@
 bool laikaK_loadKeys(uint8_t *outPub, uint8_t *outPriv, const char *inPub, const char *inPriv);
 bool laikaK_genKeys(uint8_t *outPub, uint8_t *outPriv);
 
+bool laikaK_checkAuth(uint8_t *pubKey, uint8_t **authKeys, int keys);
+
 #endif

lib/src/lpeer.c

@@ -166,7 +166,7 @@ bool laikaS_handlePeerIn(struct sLaika_socket *sock) {
 
             /* read packet ID */
             peer->pktID = laikaS_readByte(&peer->sock);
-            LAIKA_DEBUG("%s", laikaD_getPacketName(peer->pktID));
+            LAIKA_DEBUG("%s\n", laikaD_getPacketName(peer->pktID));
 
             /* LAIKAPKT_VARPKT's body is unencrypted, and handled by this switch statement. LAIKAPKT_VARPKT is 
                 also likely not to be defined in our pktSizeTable. the LAIKAPKT_VARPKT case calls laikaS_startInPacket

lib/src/lsocket.c

@@ -152,8 +152,8 @@ void laikaS_bind(struct sLaika_socket *sock, uint16_t port) {
 }
 
 void laikaS_acceptFrom(struct sLaika_socket *sock, struct sLaika_socket *from, char *ipv4) {
-    socklen_t addressSize;
     struct sockaddr_in address;
+    socklen_t addressSize = sizeof(struct sockaddr_in);
 
     sock->sock = accept(from->sock, (struct sockaddr*)&address, &addressSize);
     if (SOCKETINVALID(sock->sock))

lib/src/lsodium.c

@@ -17,3 +17,17 @@ bool laikaK_loadKeys(uint8_t *outPub, uint8_t *outPriv, const char *inPub, const
 bool laikaK_genKeys(uint8_t *outPub, uint8_t *outPriv) {
     return crypto_kx_keypair(outPub, outPriv) == 0;
 }
+
+bool laikaK_checkAuth(uint8_t *pubKey, uint8_t **authKeys, int keys) {
+    char buf[128]; /* i don't expect bin2hex to write outside this, but it's only user-info and doesn't break anything (ie doesn't write outside the buffer) */
+    int i;
+
+    /* check if key is in authKey list */
+    for (i = 0; i < keys; i++) {
+        if (sodium_memcmp(pubKey, authKeys[i], crypto_kx_PUBLICKEYBYTES) == 0)
+            return true;
+    }
+
+    /* key not found */
+    return false;
+}