Add lindbergh utility

Makefile

@@ -7,7 +7,11 @@ BUILD = build
 
 OBJS := $(patsubst %.c,%.o,$(wildcard src/lindbergh/*.c))
 
-all: lindbergh.so libsegaapi.so libkswapapi.so
+all: lindbergh lindbergh.so libsegaapi.so libkswapapi.so
+
+lindbergh: src/lindbergh/lindbergh.c
+	mkdir -p $(BUILD)
+	$(CC) src/lindbergh/lindbergh.c -o $(BUILD)/lindbergh
 
 lindbergh.so: $(OBJS)
 	mkdir -p $(BUILD)
@@ -23,9 +27,10 @@ libsegaapi.so: src/libsegaapi/segaapi.o
 
 libkswapapi.so: src/libkswapapi/libkswapapi.o
 	$(LIBSEGA_LD) $(LIBSEGA_LDFLAGS) src/libkswapapi/libkswapapi.o -L/usr/lib/i386-linux-gnu -fPIC -shared -o $(BUILD)/libkswapapi.so
+	rm -f src/libkswapapi/*.o
 
 clean:
 	rm -rf $(BUILD)
 	rm -f src/lindbergh/*.o
 	rm -f src/libsegaapi/*.o
-	rm -f src/libkswapapi/*.o
+	rm -f src/libkswapapi/*.o

src/lindbergh/lindbergh.c

@@ -0,0 +1,173 @@
+#include <dirent.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define LD_LIBRARY_PATH "LD_LIBRARY_PATH"
+#define LD_PRELOAD "LD_PRELOAD"
+#define PRELOAD_FILE_NAME "lindbergh.so"
+
+// List of all lindbergh executables known, not including the test executables
+char *games[] = {"amiM.elf", "abc", "hod4M.elf", "lgj_final", "vt3", "id4.elf", "id5.elf", "lgjsp_app", "gsevo", "vf5", "apacheM.elf", "END"};
+
+/**
+ * Tests if the game uses a seperate elf for test mode
+ * and updates the command line to this elf.
+ *
+ * @param name The command path to run
+ */
+void testModePath(char *name)
+{
+    // Check if a different testmode elf is used
+    if (strcmp(name, "./hod4M.elf") == 0)
+    {
+        strcpy(name, "./hod4testM.elf");
+        return;
+    }
+
+    if (strcmp(name, "./Jennifer") == 0)
+    {
+        strcpy(name, "../JenTest/JenTest");
+        return;
+    }
+
+    if (strcmp(name, "./apacheM.elf") == 0)
+    {
+        strcpy(name, "./apacheTestM.elf");
+        return;
+    }
+
+    // Otherwise add the standard -t to the end
+    strcat(name, " -t");
+}
+
+/**
+ * Makes sure the environment variables are set correctly
+ * to run the game.
+ */
+void setEnvironmentVariables()
+{
+    // Ensure the library path is set correctly
+    char libraryPath[128] = {0};
+
+    const char *currentLibraryPath = getenv(LD_LIBRARY_PATH);
+    if (currentLibraryPath != NULL)
+    {
+        strcat(libraryPath, currentLibraryPath);
+        strcat(libraryPath, ":");
+    }
+
+    strcat(libraryPath, ".:lib");
+
+    setenv(LD_LIBRARY_PATH, libraryPath, 1);
+
+    // Ensure the preload path is set correctly
+    setenv(LD_PRELOAD, PRELOAD_FILE_NAME, 1);
+}
+
+/**
+ * Prints the usage for the loader
+ */
+void printUsage(char *argv[])
+{
+    printf("%s [GAME_PATH] [OPTIONS]\n", argv[0]);
+    printf("Options:\n");
+    printf("  --test | -t    Runs the test mode\n");
+    printf("  --help         Displays this usage text\n");
+}
+
+/**
+ * Small utility to automatically detect the game and run it without
+ * having to type a long string in.
+ */
+int main(int argc, char *argv[])
+{
+
+    // Ensure environment variables are set correctly
+    setEnvironmentVariables();
+
+    // Look for the games
+    struct dirent *ent;
+    DIR *dir = opendir(".");
+
+    if (dir == NULL)
+    {
+        printf("Error: Could not list files in current directory.\n");
+        return EXIT_FAILURE;
+    }
+
+    char *game = NULL;
+
+    int lindberghSharedObjectFound = 0;
+
+    while ((ent = readdir(dir)) != NULL)
+    {
+
+        if (ent->d_type != DT_REG)
+            continue;
+
+        if (strcmp(ent->d_name, PRELOAD_FILE_NAME) == 0)
+        {
+            lindberghSharedObjectFound = 1;
+            continue;
+        }
+
+        int index = 0;
+        while (1)
+        {
+            if (strcmp(games[index], "END") == 0)
+                break;
+
+            if (strcmp(ent->d_name, games[index]) == 0)
+            {
+                game = games[index];
+                break;
+            }
+
+            index++;
+        }
+
+        if (game != NULL)
+            break;
+    }
+
+    closedir(dir);
+
+    if (argc > 1)
+    {
+        if (strcmp(argv[1], "--help") == 0)
+        {
+            printUsage(argv);
+            return EXIT_SUCCESS;
+        }
+    }
+
+    if (!lindberghSharedObjectFound)
+    {
+        printf("Error: The preload object lindbergh.so was not found in this directory.\n");
+        return EXIT_FAILURE;
+    }
+
+    if (game == NULL)
+    {
+        printf("Error: No lindbergh game found in this directory.\n");
+        return EXIT_FAILURE;
+    }
+
+    // Build up the command to start the game
+    char command[128];
+    strcpy(command, "./");
+    strcat(command, game);
+
+    if (argc > 1)
+    {
+        if (strcmp(argv[1], "-t") == 0 || strcmp(argv[1], "--test") == 0)
+        {
+            testModePath(command);
+        }
+    }
+
+    printf("$ %s\n", command);
+
+    return system(command);
+}