fix cmd again (fix by Blub and me)

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@8212 d7cf8633-e32d-0410-b094-e92efae38249

diff --git a/cmd.c b/cmd.c
index 4e1fb7297885840f42bbb706e960eede4c06a445..b515dbb92d6cd747424a141ee21b15b8c2689f41 100644 (file)
--- a/cmd.c
+++ b/cmd.c
@@ -161,7 +161,9 @@ void Cbuf_Execute (void)
                {
                        if (text[i] == '"')
                                quotes ^= 1;
-                       if (text[i] == '\\' && (text[i+1] == '"' || text[i+1] == '\\'))
+                       // make sure i doesn't get > cursize which causes a negative
+                       // size in memmove, which is fatal --blub
+                       if (i < (cmd_text.cursize-1) && (text[i] == '\\' && (text[i+1] == '"' || text[i+1] == '\\')))
                                i++;
                        if ( !quotes &&  text[i] == ';')
                                break;  // don't break if inside a quoted string
@@ -169,13 +171,17 @@ void Cbuf_Execute (void)
                                break;
                }
 
-               /* should never happen
+               // better than CRASHING on overlong input lines that may SOMEHOW enter the buffer
                if(i >= MAX_INPUTLINE)
-                       i = MAX_INPUTLINE - 1;
-               */
-
-               memcpy (line, text, i);
-               line[i] = 0;
+               {
+                       Con_Printf("Warning: console input buffer had an overlong line. Ignored.\n");
+                       line[0] = 0;
+               }
+               else
+               {
+                       memcpy (line, text, i);
+                       line[i] = 0;
+               }
 
 // delete the text from the command buffer and move remaining commands down
 // this is necessary because commands (exec, alias) can insert data at the