From ee37b4d210b6c66d3b7484bf1c32c651b3c5e6e9 Mon Sep 17 00:00:00 2001
From: John Zaitseff <J.Zaitseff@zap.org.au>
Date: Tue, 19 Jul 2011 23:24:17 +1000
Subject: [PATCH] Add the --no-encrypt command-line option

---
 src/fileio.c  |  3 ++-
 src/globals.c |  5 +++--
 src/globals.h |  1 +
 src/trader.c  | 19 +++++++++++++------
 4 files changed, 19 insertions(+), 9 deletions(-)

diff --git a/src/fileio.c b/src/fileio.c
index 92ad89f..55b442e 100644
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -329,7 +329,8 @@ bool save_game (int num)
 	err_exit_nomem();
     }
 
-    crypt_key = game_file_crypt_key[randi(GAME_FILE_CRYPT_KEY_SIZE)];
+    crypt_key = option_no_encrypt ? 0 :
+	game_file_crypt_key[randi(GAME_FILE_CRYPT_KEY_SIZE)];
 
     // Create the data directory, if needed
     data_dir = data_directory();
diff --git a/src/globals.c b/src/globals.c
index 9a3c6b6..bcf88d9 100644
--- a/src/globals.c
+++ b/src/globals.c
@@ -85,8 +85,9 @@ int	game_num	= 0;		// Game number (1-9)
 bool	quit_selected	= false;	// Is a player trying to quit the game?
 bool	abort_game	= false;	// Abort game without declaring winner?
 
-bool	option_no_color = false;	// True if --no-color was specified
-int	option_max_turn = 0;		// Max. turns if --max-turn was specified
+bool	option_no_color   = false;	// True if --no-color was specified
+bool	option_no_encrypt = false;	// True if --no-encrypt was specified
+int	option_max_turn   = 0;		// Max. turns if --max-turn was specified
 
 
 /***********************************************************************/
diff --git a/src/globals.h b/src/globals.h
index 3b08b4f..027ae73 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -198,6 +198,7 @@ extern bool	quit_selected;		// Is a player trying to quit the game?
 extern bool	abort_game;		// Abort game without declaring winner?
 
 extern bool	option_no_color;	// True if --no-color was specified
+extern bool	option_no_encrypt;	// True if --no-encrypt was specified
 extern int	option_max_turn;	// Max. turns if --max-turn was specified
 
 
diff --git a/src/trader.c b/src/trader.c
index a59c197..de7816c 100644
--- a/src/trader.c
+++ b/src/trader.c
@@ -43,6 +43,7 @@
 
 enum options_char {
     OPTION_NO_COLOR = 1,
+    OPTION_NO_ENCRYPT,
     OPTION_MAX_TURN
 };
 
@@ -51,12 +52,13 @@ static const char options_short[] = "hV";
     // -V, --version
 
 static struct option const options_long[] = {
-    { "help",      no_argument,       NULL, 'h' },
-    { "version",   no_argument,       NULL, 'V' },
-    { "no-color",  no_argument,       NULL, OPTION_NO_COLOR },
-    { "no-colour", no_argument,       NULL, OPTION_NO_COLOR },
-    { "max-turn",  required_argument, NULL, OPTION_MAX_TURN },
-    { NULL,        0,                 NULL, 0 }
+    { "help",       no_argument,       NULL, 'h' },
+    { "version",    no_argument,       NULL, 'V' },
+    { "no-color",   no_argument,       NULL, OPTION_NO_COLOR },
+    { "no-colour",  no_argument,       NULL, OPTION_NO_COLOR },
+    { "no-encrypt", no_argument,       NULL, OPTION_NO_ENCRYPT },
+    { "max-turn",   required_argument, NULL, OPTION_MAX_TURN },
+    { NULL,         0,                 NULL, 0 }
 };
 
 
@@ -215,6 +217,11 @@ void process_cmdline (int argc, char *argv[])
 	    option_no_color = true;
 	    break;
 
+	case OPTION_NO_ENCRYPT:
+	    // --no-encrypt: don't encrypt game files
+	    option_no_encrypt = true;
+	    break;
+
 	case OPTION_MAX_TURN:
 	    // --max-turn: specify the maximum turn number
 	    option_max_turn = strtol(optarg, &p, 10);