From a20f2ac2eaf757d6345a260c71ebc782a56da0e0 Mon Sep 17 00:00:00 2001
From: Kevin Bowling <kevin.bowling@kev009.com>
Date: Fri, 17 Dec 2010 21:09:41 -0700
Subject: [PATCH] MOTD implementation

---
 motd.conf.dist      |  3 ++-
 src/craftd-config.c | 63 ++++++++++++++++++++++++++++++++++++++-------
 src/craftd-config.h | 14 +++++++---
 src/craftd.c        |  1 +
 src/network/send.c  |  6 +++++
 5 files changed, 74 insertions(+), 13 deletions(-)

diff --git a/motd.conf.dist b/motd.conf.dist
index 81f6420..a26a770 100644
--- a/motd.conf.dist
+++ b/motd.conf.dist
@@ -1 +1,2 @@
-Temporary MOTD
+Welcome to craftd!  This is a test server.
+Check us out at http://mc.kev009.com/craftd/
diff --git a/src/craftd-config.c b/src/craftd-config.c
index 1c86ebc..45c9fe3 100644
--- a/src/craftd-config.c
+++ b/src/craftd-config.c
@@ -26,12 +26,23 @@
 #include <stdint.h>
 #include <string.h>
 #include <unistd.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
 
 #include <jansson.h>
 
 #include "craftd-config.h"
 #include "util.h"
 
+/* Networking knobs */
+const int MAX_LISTENBACKLOG = 16;
+const int MAX_BUF = 8096;
+
+/* MOTD */
+bstring Config_motd[MOTD_LINES];
+int Config_motdsz = 0;
+
 /* Search path for the main config file, in order */
 static const char *config_searchpath[] = {
   "/.craftd/craftd.conf", // $HOME is appended to this in _setdefaults()!
@@ -65,12 +76,46 @@ craftd_config_setdefaults()
   Config.max_listenbacklog = 16;
   Config.mcstring_max = 100;
   Config.workpool_size = 2;
-  Config.motd_file = "motd.conf";
+  char *motddefault = "motd.conf";
+  Config.motd_file = motddefault;
   
   // httpd settings
   Config.httpd_enabled = true;
   Config.httpd_port = 25566;
-  Config.docroot = "htdocs/";
+  char *docrootdefault = "htdocs/";
+  Config.docroot = docrootdefault;
+}
+
+void
+craftd_config_readmotd(char *file)
+{
+  //struct bstrList *motd = bstrListCreate();
+  FILE *fp;
+
+  LOG(LOG_DEBUG, "Reading MOTD file %s", file);
+  
+  /* Open the MOTD or exit */
+  if ((fp = fopen(file, "r")) == NULL)
+    PERR("Error reading MOTD file"); // Read errno and quit
+  struct bStream *bs = bsopen((bNread)fread, fp);
+
+  bstring line;
+  int i;
+  for (i = 0; (line = bgets((bNgetc)fgetc, fp, '\n')) != NULL; ++i)
+  {
+    if (i > MOTD_LINES)
+      ERR("MOTD File is too long, max lines is %d", MOTD_LINES);
+
+    LOG(LOG_DEBUG, "MOTD: %s", line->data);
+    Config_motd[i] = line;
+  }
+
+  Config_motdsz = i;
+
+  bsclose(bs);
+  fclose(fp);
+
+  return;
 }
 
 /**
@@ -152,8 +197,8 @@ parseJInt(int *storage, const json_t *obj, const char *key)
  * @param obj json object to parse
  * @param key key to read
  */
-void
-parseJString(char *storage, const json_t *obj, const char *key)
+char *
+parseJString(const json_t *obj, const char *key)
 {
   const char *strval;
   json_t *strobj = json_object_get(obj, key);
@@ -162,7 +207,7 @@ parseJString(char *storage, const json_t *obj, const char *key)
   if (!strobj)
   {
     LOG(LOG_DEBUG, "Config: key \"%s\" is undefined.  Using default.", key);
-    return;
+    return Config.motd_file;
   }
   
   /* Check if the value is a string (fatal) */
@@ -173,8 +218,8 @@ parseJString(char *storage, const json_t *obj, const char *key)
   LOG(LOG_DEBUG, "Got string value: \"%s\" for key: \"%s\"", strval, key);
   
   /* Set the storage location to the new value */
-  storage = (char *)Malloc(strlen(strval));
-  storage = strdup(strval);
+  //storage = (char *)Malloc(strlen(strval));
+  return strdup(strval);
 }
 
 /**
@@ -225,7 +270,7 @@ craftd_config_parse(const char *file)
     parseJInt(&Config.game_port, jsongame, "game-port");
     parseJInt(&Config.mcstring_max, jsongame, "minecraft-stringmax");
     parseJInt(&Config.workpool_size, jsongame, "worker-pool-size");
-    parseJString(Config.motd_file, jsongame, "motd-file");
+    Config.motd_file = parseJString(jsongame, "motd-file");
   }
   else
   {
@@ -238,7 +283,7 @@ craftd_config_parse(const char *file)
   {
     parseJBool(&Config.httpd_enabled, jsonhttp, "enabled");
     parseJInt(&Config.httpd_port, jsonhttp, "httpd-port");
-    parseJString(Config.docroot, jsonhttp, "static-docroot");
+    Config.docroot = parseJString(jsonhttp, "static-docroot");
   }
   else
   {
diff --git a/src/craftd-config.h b/src/craftd-config.h
index aa560fc..f9bca99 100644
--- a/src/craftd-config.h
+++ b/src/craftd-config.h
@@ -31,14 +31,22 @@
 #include <stdbool.h>
 #include <stdint.h>
 
-#define MAX_LISTENBACKLOG (16)
-#define MAX_BUF (8096)
+#include "bstrlib.h"
+
+/* Networking knobs */
+const int MAX_LISTENBACKLOG;
+const int MAX_BUF;
 
 /* Public methods */
 void craftd_config_setdefaults();
-void craftd_config_parse(const char* file);
+void craftd_config_parse(const char *file);
+void craftd_config_readmotd(char *file);
 
 /* Public data */
+#define MOTD_LINES (20) // Max MOTD line count
+extern bstring Config_motd[MOTD_LINES];
+int Config_motdsz;
+
 struct
 {
   // Game settings
diff --git a/src/craftd.c b/src/craftd.c
index 0cf204b..42cdb2a 100644
--- a/src/craftd.c
+++ b/src/craftd.c
@@ -362,6 +362,7 @@ main(int argc, char *argv[])
   /* Initialize the configuration */
   craftd_config_setdefaults();
   craftd_config_parse(argconfigfile);
+  craftd_config_readmotd(Config.motd_file);
 
   /* Tell libevent to use our logging functions */
   event_set_log_callback(ev_log_callback);
diff --git a/src/network/send.c b/src/network/send.c
index 3384e8d..fe8d046 100644
--- a/src/network/send.c
+++ b/src/network/send.c
@@ -95,6 +95,12 @@ process_login(struct PL_entry *player, bstring username, uint32_t ver)
       player->username->data);
   send_syschat(loginmsg);
   bstrFree(loginmsg);
+
+  /* Send player MOTD */
+  for(int i=0; i < Config_motdsz; ++i)
+  {
+    send_directchat(player, Config_motd[i]);
+  }
   
   return;
 }