*** VERSION 5.2.0 ***

[NeonServV5.git] / src / tools.c

diff --git a/src/tools.c b/src/tools.c
index fa187b614826ae68c00b58831545ad382e9d5140..71cd40d756b6858f272bb5d123cc60a8c8d4d821 100644 (file)
--- a/src/tools.c
+++ b/src/tools.c
@@ -1,3 +1,19 @@
+/* tools.c - NeonServ v5.2
+ * Copyright (C) 2011  Philipp Kreil (pk910)
+ * 
+ * This program 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.
+ * 
+ * This program 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 this program. If not, see <http://www.gnu.org/licenses/>. 
+ */
 #include "tools.h"
 #include "UserNode.h"
 #include "ChanNode.h"
@@ -378,6 +394,7 @@ void flushModeBuffer(struct ModeBuffer *modeBuf) {
     char modeStr[MAXMODES+3];
     int modePos = 0;
     char paramStr[MAXLEN];
+    *paramStr = '\0';
     int paramPos = 0;
     int i;
     if(modeBuf->addCount) {
@@ -496,6 +513,32 @@ int isFakeHost(char *host) {
     return (strlen(p2+1) > 4);
 }
 
+static unsigned long crc_table[256];
+
+static void crc32_init() {
+    unsigned long crc;
+    int i, j;
+    for(i = 0; i < 256; i++) {
+        crc = i;
+        for(j = 8; j > 0; j--) {
+            if(crc & 1)
+                               crc = (crc >> 1) ^ 0xEDB88320L;
+            else
+                crc >>= 1;
+        }
+        crc_table[i] = crc;
+    }
+}
+
+unsigned long crc32(const char *text) {
+    register unsigned long crc = 0xFFFFFFFF;
+    unsigned int c, i = 0;
+    while((c = (unsigned int)text[i++]) != 0)
+        crc = ((crc >> 8) & 0x00FFFFFF) ^ crc_table[(crc^c) & 0xFF];
+    return (crc^0xFFFFFFFF);
+}
+
 void init_tools() {
     register_default_language_table(msgtab);
+    crc32_init();
 }