From e18e670f43f0e7b126f209c040126aa02511fa32 Mon Sep 17 00:00:00 2001
From: Luke Bratch <luke@bratch.co.uk>
Date: Sun, 12 May 2019 20:56:55 +0100
Subject: Completely rewrite configuration file reading to remove lots of
 duplicated code and to simplify things.  Alter everything that called the old
 functions.

---
 blabouncer.c | 46 ++++++++++++++++++++++++++++++++++++++--------
 1 file changed, 38 insertions(+), 8 deletions(-)

(limited to 'blabouncer.c')

diff --git a/blabouncer.c b/blabouncer.c
index d96ec09..5da18e0 100644
--- a/blabouncer.c
+++ b/blabouncer.c
@@ -70,6 +70,8 @@
 #define MAXREALNAMELEN 128 // Randomly picked (TODO - is there an actual maximum real name length?)
 #define MAXPORTLEN 6 // Up to 65535, so 5 characters + 1 for null
 
+#define CONFFILE "blabouncer.conf"
+
 struct channel {
   char name[MAXCHANLENGTH];
   char topic[MAXDATASIZE]; // TODO - Is there a particular maximum topic length?
@@ -91,7 +93,6 @@ struct ircdstrings {
   char nickuserhost[MAXDATASIZE]; // TODO - Make sure this changes when nick changes, if that's meant to happen.
   char ircnick[MAXNICKLENGTH]; // TODO - Make sure this changes when nick changes
   char ircusername[MAXUSERNAMELEN];
-  char ircrealname[MAXREALNAMELEN];
   char currentmsg[MAXDATASIZE]; // Holding area for the current server-received IRC message being processed in case it needs building across multiple reads (i.e. a truncated/split message)
 };
 
@@ -99,6 +100,9 @@ struct ircdstrings {
 struct settings {
   int replayseconds;
   char clientport[MAXPORTLEN];
+  char ircnick[MAXNICKLENGTH]; // In both settings and ircdstrings as settings is from our file whereas server may change ircdstrings copy
+  char ircusername[MAXUSERNAMELEN]; // (Is this also true for the username?  Can the server change that?)
+  char ircrealname[MAXREALNAMELEN];
 };
 
 int debugmode = 0;
@@ -665,7 +669,7 @@ int processircmessage(int *serversockfd, int *clientsockfd, char *str, int sourc
     case SOURCE_CLIENT: // If message(s) were from a real IRC client
       // PASS received?  User is trying to log in, check their password.
       if (strncmp(tokens[0], "PASS", strlen(tokens[0])) == 0) {
-        if (checkpassword(tokens[1])) {
+        if (checkpassword(tokens[1], CONFFILE)) {
           printf("Password accepted!  Setting fd %d to authenticated.\n", sourcefd);
           // Find the client in the clients array and set them as authenticated
           for (int i = 0; i < MAXCLIENTS; i++) {
@@ -1049,11 +1053,11 @@ void dochat(int *serversockfd, int *clientsockfd, struct settings *settings) {
   ircdstrings.nickuserhost[0] = '\0';
   ircdstrings.ircnick[0] = '\0';
   ircdstrings.ircusername[0] = '\0';
-  ircdstrings.ircrealname[0] = '\0';
   ircdstrings.currentmsg[0] = '\0';
 
-  // Read required things from configuration file
-  readnames(ircdstrings.ircnick, ircdstrings.ircusername, ircdstrings.ircrealname);
+  // Populate nick and username from our configuration file for now, real IRCd may change them later (TODO - Is this true of username?)
+  strcpy(ircdstrings.ircnick, settings->ircnick);
+  strcpy(ircdstrings.ircusername, settings->ircusername);
 
   // Send our NICK
   snprintf(outgoingmsg, MAXDATASIZE, "NICK %s", ircdstrings.ircnick); // TODO - Check for success (with return code)
@@ -1061,7 +1065,7 @@ void dochat(int *serversockfd, int *clientsockfd, struct settings *settings) {
   sendtoserver(serversockfd, outgoingmsg, strlen(outgoingmsg), 0, arr_clients, arr_authed);
 
   // Send our USER
-  snprintf(outgoingmsg, MAXDATASIZE, "USER %s 8 * : %s", ircdstrings.ircusername, ircdstrings.ircrealname); // TODO - Check for success (with return code)
+  snprintf(outgoingmsg, MAXDATASIZE, "USER %s 8 * : %s", ircdstrings.ircusername, settings->ircrealname); // TODO - Check for success (with return code)
                                                                                 // TODO - Send a more intelligent/correct USER string
   // sourcefd = 0 as this is a trusted message
   sendtoserver(serversockfd, outgoingmsg, strlen(outgoingmsg), 0, arr_clients, arr_authed);
@@ -1278,8 +1282,34 @@ int main(int argc, char *argv[]) {
 
   // Structure of our various settings which are to either be read from the configuration file or set at runtime
   struct settings settings;
-  settings.replayseconds = confreplayseconds();
-  confclientport(settings.clientport);
+
+  // Populate said settings
+
+  // How many seconds of replay log should automatically be replayed - TODO - Can we do error checking on this?
+  settings.replayseconds = getconfint("replayseconds", CONFFILE);
+  // What port should the bouncer listen on
+  if (!getconfstr("clientport", CONFFILE, settings.clientport)) {
+    printf("main(): error getting clientport from configuration file.\n");
+    exit(1);
+  }
+
+  // What is the configured nick?
+  if (!getconfstr("nick", CONFFILE, settings.ircnick)) {
+    printf("main(): error getting nick from configuration file.\n");
+    exit(1);
+  }
+
+  // What is the configured username?
+  if (!getconfstr("username", CONFFILE, settings.ircusername)) {
+    printf("main(): error getting username from configuration file.\n");
+    exit(1);
+  }
+
+  // What is the configured real name?
+  if (!getconfstr("realname", CONFFILE, settings.ircrealname)) {
+    printf("main(): error getting real name from configuration file.\n");
+    exit(1);
+  }
 
   // TODO: see if any of this can be shared (i.e. 1. avoid code duplication, and 2. see if variables can be shared between client/server sockets)
 
-- 
cgit v1.2.3