Add efacf056cd

dockerdoom/trunk/setup/execute.c

@@ -0,0 +1,454 @@
+// Emacs style mode select   -*- C++ -*- 
+//-----------------------------------------------------------------------------
+//
+// Copyright(C) 2006 Simon Howard
+//
+// 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 2
+// 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, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+// 02111-1307, USA.
+//
+
+// Code for invoking Doom
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <sys/types.h>
+
+#if defined(_WIN32_WCE)
+#include "libc_wince.h"
+#endif
+
+#ifdef _WIN32
+
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#include <process.h>
+
+#else
+
+#include <sys/wait.h>
+#include <unistd.h>
+
+#endif
+
+#include "textscreen.h"
+
+#include "config.h"
+#include "configfile.h"
+#include "execute.h"
+#include "m_argv.h"
+
+#ifdef _WIN32
+#define DOOM_BINARY PACKAGE_TARNAME ".exe"
+#else
+#define DOOM_BINARY PACKAGE_TARNAME
+#endif
+
+#ifdef _WIN32
+#define DIR_SEPARATOR '\\'
+#define PATH_SEPARATOR ';'
+#else
+#define DIR_SEPARATOR '/'
+#define PATH_SEPARATOR ':'
+#endif
+
+struct execute_context_s
+{
+    char *response_file;
+    FILE *stream;
+};
+
+// Returns the path to a temporary file of the given name, stored
+// inside the system temporary directory.
+
+static char *TempFile(char *s)
+{
+    char *result;
+    char *tempdir;
+
+#ifdef _WIN32
+    // Check the TEMP environment variable to find the location.
+
+    tempdir = getenv("TEMP");
+
+    if (tempdir == NULL)
+    {
+        tempdir = ".";
+    }
+#else
+    // In Unix, just use /tmp.
+
+    tempdir = "/tmp";
+#endif
+
+    result = malloc(strlen(tempdir) + strlen(s) + 2);
+    sprintf(result, "%s%c%s", tempdir, DIR_SEPARATOR, s);
+
+    return result;
+}
+
+static int ArgumentNeedsEscape(char *arg)
+{
+    char *p;
+
+    for (p = arg; *p != '\0'; ++p)
+    {
+        if (isspace(*p))
+        {
+            return 1;
+        }
+    }
+
+    return 0;
+}
+
+// Arguments passed to the setup tool should be passed through to the
+// game when launching a game.  Calling this adds all arguments from
+// myargv to the output context.
+
+void PassThroughArguments(execute_context_t *context)
+{
+    int i;
+
+    for (i = 1; i < myargc; ++i)
+    {
+        if (ArgumentNeedsEscape(myargv[i]))
+        {
+            AddCmdLineParameter(context, "\"%s\"", myargv[i]);
+        }
+        else
+        {
+            AddCmdLineParameter(context, "%s", myargv[i]);
+        }
+    }
+}
+
+execute_context_t *NewExecuteContext(void)
+{
+    execute_context_t *result;
+
+    result = malloc(sizeof(execute_context_t));
+    
+    result->response_file = TempFile("chocolat.rsp");
+    result->stream = fopen(result->response_file, "w");
+
+    if (result->stream == NULL)
+    {
+        fprintf(stderr, "Error opening response file\n");
+        exit(-1);
+    }
+    
+    return result;
+}
+
+void AddCmdLineParameter(execute_context_t *context, char *s, ...)
+{
+    va_list args;
+
+    va_start(args, s);
+
+    vfprintf(context->stream, s, args);
+    fprintf(context->stream, "\n");
+}
+
+#if defined(_WIN32)
+
+// Wait for the specified process to exit.  Returns the exit code.
+
+static unsigned int WaitForProcessExit(HANDLE subprocess)
+{
+    DWORD exit_code;
+
+    for (;;)
+    {
+        WaitForSingleObject(subprocess, INFINITE);
+
+        if (!GetExitCodeProcess(subprocess, &exit_code))
+        {
+            return -1;
+        }
+
+        if (exit_code != STILL_ACTIVE)
+        {
+            return exit_code;
+        }
+    }
+}
+
+static void ConcatWCString(wchar_t *buf, const char *value)
+{
+    MultiByteToWideChar(CP_OEMCP, 0,
+                        value, strlen(value) + 1,
+                        buf + wcslen(buf), strlen(value) + 1);
+}
+
+// Build the command line string, a wide character string of the form:
+//
+// "program" "arg"
+
+static wchar_t *BuildCommandLine(const char *program, const char *arg)
+{
+    wchar_t exe_path[MAX_PATH];
+    wchar_t *result;
+    wchar_t *sep;
+
+    // Get the path to this .exe file.
+
+    GetModuleFileNameW(NULL, exe_path, MAX_PATH);
+
+    // Allocate buffer to contain result string.
+
+    result = calloc(wcslen(exe_path) + strlen(program) + strlen(arg) + 6,
+                    sizeof(wchar_t));
+
+    wcscpy(result, L"\"");
+
+    // Copy the path part of the filename (including ending \)
+    // into the result buffer:
+
+    sep = wcsrchr(exe_path, DIR_SEPARATOR);
+
+    if (sep != NULL)
+    {
+        wcsncpy(result + 1, exe_path, sep - exe_path + 1);
+        result[sep - exe_path + 2] = '\0';
+    }
+
+    // Concatenate the name of the program:
+
+    ConcatWCString(result, program);
+
+    // End of program name, start of argument:
+
+    wcscat(result, L"\" \"");
+
+    ConcatWCString(result, arg);
+
+    wcscat(result, L"\"");
+
+    return result;
+}
+
+static int ExecuteCommand(const char *program, const char *arg)
+{
+    STARTUPINFOW startup_info;
+    PROCESS_INFORMATION proc_info;
+    wchar_t *command;
+    int result = 0;
+
+    command = BuildCommandLine(program, arg);
+
+    // Invoke the program:
+
+    memset(&proc_info, 0, sizeof(proc_info));
+    memset(&startup_info, 0, sizeof(startup_info));
+    startup_info.cb = sizeof(startup_info);
+
+    if (!CreateProcessW(NULL, command,
+                        NULL, NULL, FALSE, 0, NULL, NULL,
+                        &startup_info, &proc_info))
+    {
+        result = -1;
+    }
+    else
+    {
+        // Wait for the process to finish, and save the exit code.
+
+        result = WaitForProcessExit(proc_info.hProcess);
+
+        CloseHandle(proc_info.hProcess);
+        CloseHandle(proc_info.hThread);
+    }
+
+    free(command);
+
+    return result;
+}
+
+#else
+
+// Given the specified program name, get the full path to the program,
+// assuming that it is in the same directory as this program is.
+
+static char *GetFullExePath(const char *program)
+{
+    char *result;
+    char *sep;
+    unsigned int path_len;
+
+    sep = strrchr(myargv[0], DIR_SEPARATOR);
+
+    if (sep == NULL)
+    {
+        result = strdup(program);
+    }
+    else
+    {
+        path_len = sep - myargv[0] + 1;
+
+        result = malloc(strlen(program) + path_len + 1);
+
+        strncpy(result, myargv[0], path_len);
+        result[path_len] = '\0';
+
+        strcat(result, program);
+    }
+
+    return result;
+}
+
+static int ExecuteCommand(const char *program, const char *arg)
+{
+    pid_t childpid;
+    int result;
+    const char *argv[3];
+
+    childpid = fork();
+
+    if (childpid == 0) 
+    {
+        // This is the child.  Execute the command.
+
+        argv[0] = GetFullExePath(program);
+        argv[1] = arg;
+        argv[2] = NULL;
+
+        execvp(argv[0], (char **) argv);
+
+        exit(0x80);
+    }
+    else
+    {
+        // This is the parent.  Wait for the child to finish, and return
+        // the status code.
+
+        waitpid(childpid, &result, 0);
+
+        if (WIFEXITED(result) && WEXITSTATUS(result) != 0x80) 
+        {
+            return WEXITSTATUS(result);
+        }
+        else
+        {
+            return -1;
+        }
+    }
+}
+
+#endif
+
+int ExecuteDoom(execute_context_t *context)
+{
+    char *response_file_arg;
+    int result;
+    
+    fclose(context->stream);
+
+    // Build the command line
+
+    response_file_arg = malloc(strlen(context->response_file) + 2);
+    sprintf(response_file_arg, "@%s", context->response_file);
+
+    // Run Doom
+
+    result = ExecuteCommand(DOOM_BINARY, response_file_arg);
+
+    free(response_file_arg);
+
+    // Destroy context
+    remove(context->response_file);
+    free(context->response_file);
+    free(context);
+
+    return result;
+}
+
+static void TestCallback(TXT_UNCAST_ARG(widget), TXT_UNCAST_ARG(data))
+{
+    execute_context_t *exec;
+    char *main_cfg;
+    char *extra_cfg;
+    txt_window_t *testwindow;
+    txt_label_t *label;
+    
+    testwindow = TXT_NewWindow("Starting Doom");
+
+    label = TXT_NewLabel("Starting Doom to test the\n"
+                         "settings.  Please wait.");
+    TXT_SetWidgetAlign(label, TXT_HORIZ_CENTER);
+    TXT_AddWidget(testwindow, label);
+    TXT_DrawDesktop();
+
+    // Save temporary configuration files with the current configuration
+
+    main_cfg = TempFile("tmp.cfg");
+    extra_cfg = TempFile("extratmp.cfg");
+
+    M_SaveMainDefaults(main_cfg);
+    M_SaveExtraDefaults(extra_cfg);
+
+    // Run with the -testcontrols parameter
+
+    exec = NewExecuteContext();
+    AddCmdLineParameter(exec, "-testcontrols");
+    AddCmdLineParameter(exec, "-config \"%s\"", main_cfg);
+    AddCmdLineParameter(exec, "-extraconfig \"%s\"", extra_cfg);
+    ExecuteDoom(exec);
+
+    TXT_CloseWindow(testwindow);
+
+    // Delete the temporary config files
+
+    remove(main_cfg);
+    remove(extra_cfg);
+    free(main_cfg);
+    free(extra_cfg);
+}
+
+txt_window_action_t *TestConfigAction(void)
+{
+    txt_window_action_t *test_action;
+    
+    test_action = TXT_NewWindowAction('t', "Test");
+    TXT_SignalConnect(test_action, "pressed", TestCallback, NULL);
+
+    return test_action;
+}
+
+// Invokes Doom to find which IWADs are installed.
+// This is a cheap hack to avoid duplication of the complicated install
+// path searching code inside Doom.
+
+int FindInstalledIWADs(void)
+{
+    execute_context_t *context;
+    int result;
+
+    context = NewExecuteContext();
+    AddCmdLineParameter(context, "-findiwads");
+    result = ExecuteDoom(context);
+
+    if (result < 0)
+    {
+        return 0;
+    }
+    else
+    {
+        return result;
+    }
+}
+