main.c

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/*
 * Copyright 2011 Vincent Sanders <vince@simtec.co.uk>
 *
 * This file is part of NetSurf, http://www.netsurf-browser.org/
 *
 * NetSurf 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; version 2 of the License.
 *
 * NetSurf 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 "utils/config.h"
 
#include <limits.h>
#include <stdbool.h>
#include <windows.h>
#include <shlobj.h>
#include <shlwapi.h>
#include <io.h>
 
#include "utils/utils.h"
#include "utils/log.h"
#include "utils/messages.h"
#include "utils/filepath.h"
#include "utils/file.h"
#include "utils/nsurl.h"
#include "utils/nsoption.h"
#include "netsurf/url_db.h"
#include "netsurf/cookie_db.h"
#include "netsurf/browser.h"
#include "netsurf/browser_window.h"
#include "netsurf/fetch.h"
#include "netsurf/misc.h"
#include "netsurf/netsurf.h"
#include "desktop/hotlist.h"
 
#include "windows/findfile.h"
#include "windows/file.h"
#include "windows/cookies.h"
#include "windows/drawable.h"
#include "windows/corewindow.h"
#include "windows/download.h"
#include "windows/local_history.h"
#include "windows/window.h"
#include "windows/schedule.h"
#include "windows/font.h"
#include "windows/fetch.h"
#include "windows/pointers.h"
#include "windows/bitmap.h"
#include "windows/clipboard.h"
#include "windows/gui.h"
 
 
/**
 * Obtain the DPI of the display.
 *
 * \return The DPI of the device the window is displayed on.
 */
static int get_screen_dpi(void)
{
        HDC screendc = GetDC(0);
        int dpi = GetDeviceCaps(screendc, LOGPIXELSY);
        ReleaseDC(0, screendc);
 
        if (dpi <= 10) {
                dpi = 96; /* 96DPI is the default */
        }
 
        NSLOG(netsurf, INFO, "FIX DPI %d", dpi);
 
        return dpi;
}
 
/**
 * Get the path to the config directory.
 *
 * This ought to use SHGetKnownFolderPath(FOLDERID_RoamingAppData) and
 * PathCcpAppend() but uses depricated API because that is what mingw
 * supports.
 *
 * @param config_home_out Path to configuration directory.
 * @return NSERROR_OK on sucess and \a config_home_out updated else error code.
 */
static nserror get_config_home(char **config_home_out)
{
        TCHAR adPath[MAX_PATH]; /* appdata path */
        char nsdir[] = "NetSurf";
        HRESULT hres;
 
        hres = SHGetFolderPath(NULL,
                               CSIDL_APPDATA | CSIDL_FLAG_CREATE,
                               NULL,
                               SHGFP_TYPE_CURRENT,
                               adPath);
        if (hres != S_OK) {
                return NSERROR_INVALID;
        }
 
        if (PathAppend(adPath, nsdir) == false) {
                return NSERROR_NOT_FOUND;
        }
 
        /* ensure netsurf directory exists */
        if (CreateDirectory(adPath, NULL) == 0) {
                DWORD dw;
                dw = GetLastError();
                if (dw != ERROR_ALREADY_EXISTS) {
                        return NSERROR_NOT_DIRECTORY;
                }
        }
 
        *config_home_out = strdup(adPath);
 
        NSLOG(netsurf, INFO, "using config path \"%s\"", *config_home_out);
 
        return NSERROR_OK;
}
 
 
/**
 * Cause an abnormal program termination.
 *
 * \note This never returns and is intended to terminate without any cleanup.
 *
 * \param error The message to display to the user.
 */
static void die(const char *error)
{
        exit(1);
}
 
 
 
/**
 * Ensures output logging stream is available
 */
static bool nslog_ensure(FILE *fptr)
{
        /* mwindows compile flag normally invalidates standard io unless
         *  already redirected
         */
        if (_get_osfhandle(fileno(fptr)) == -1) {
                AllocConsole();
                freopen("CONOUT$", "w", fptr);
        }
        return true;
}
 
/**
 * Set option defaults for windows frontend
 *
 * @param defaults The option table to update.
 * @return error status.
 */
static nserror set_defaults(struct nsoption_s *defaults)
{
        /* Set defaults for absent option strings */
 
        /* locate CA bundle and set as default, cannot rely on curl
         * compiled in default on windows.
         */
        DWORD res_len;
        DWORD buf_tchar_size = PATH_MAX + 1;
        DWORD buf_bytes_size = sizeof(TCHAR) * buf_tchar_size;
        char *ptr = NULL;
        char *buf;
        char *fname;
        HRESULT hres;
        char dldir[] = "Downloads";
 
        buf = malloc(buf_bytes_size);
        if (buf== NULL) {
                return NSERROR_NOMEM;
        }
        buf[0] = '\0';
 
        /* locate certificate bundle */
        res_len = SearchPathA(NULL,
                              "ca-bundle.crt",
                              NULL,
                              buf_tchar_size,
                              buf,
                              &ptr);
        if (res_len > 0) {
                nsoption_setnull_charp(ca_bundle, strdup(buf));
        } else {
                ptr = filepath_sfind(G_resource_pathv, buf, "ca-bundle.crt");
                if (ptr != NULL) {
                        nsoption_setnull_charp(ca_bundle, strdup(buf));
                }
        }
 
 
        /* download directory default
         *
         * unfortunately SHGetKnownFolderPath(FOLDERID_Downloads) is
         * not available so use the obsolete method of user prodile
         * with downloads suffixed
         */
        buf[0] = '\0';
 
        hres = SHGetFolderPath(NULL,
                               CSIDL_PROFILE | CSIDL_FLAG_CREATE,
                               NULL,
                               SHGFP_TYPE_CURRENT,
                               buf);
        if (hres == S_OK) {
                if (PathAppend(buf, dldir)) {
                        nsoption_setnull_charp(downloads_directory,
                                               strdup(buf));
 
                }
        }
 
        free(buf);
 
        /* ensure homepage option has a default */
        nsoption_setnull_charp(homepage_url, strdup(NETSURF_HOMEPAGE));
 
        /* cookie file default */
        fname = NULL;
        netsurf_mkpath(&fname, NULL, 2, G_config_path, "Cookies");
        if (fname != NULL) {
                nsoption_setnull_charp(cookie_file, fname);
        }
 
        /* cookie jar default */
        fname = NULL;
        netsurf_mkpath(&fname, NULL, 2, G_config_path, "Cookies");
        if (fname != NULL) {
                nsoption_setnull_charp(cookie_jar, fname);
        }
 
        /* url database default */
        fname = NULL;
        netsurf_mkpath(&fname, NULL, 2, G_config_path, "URLs");
        if (fname != NULL) {
                nsoption_setnull_charp(url_file, fname);
        }
 
        /* bookmark database default */
        fname = NULL;
        netsurf_mkpath(&fname, NULL, 2, G_config_path, "Hotlist");
        if (fname != NULL) {
                nsoption_setnull_charp(hotlist_path, fname);
        }
 
        return NSERROR_OK;
}
 
 
/**
 * Initialise user options location and contents
 */
static nserror
nsw32_option_init(int *pargc, char** argv, char **respaths, char *config_path)
{
        nserror ret;
        char *choices = NULL;
 
        /* set the globals that will be used in the set_defaults() callback */
        G_resource_pathv = respaths;
        G_config_path = config_path;
 
        /* user options setup */
        ret = nsoption_init(set_defaults, &nsoptions, &nsoptions_default);
        if (ret != NSERROR_OK) {
                return ret;
        }
 
        /* Attempt to load the user choices */
        ret = netsurf_mkpath(&choices, NULL, 2, config_path, "Choices");
        if (ret == NSERROR_OK) {
                nsoption_read(choices, nsoptions);
                free(choices);
        }
 
        /* overide loaded options with those from commandline */
        nsoption_commandline(pargc, argv, nsoptions);
 
        return NSERROR_OK;
}
 
/**
 * Initialise messages
 */
static nserror nsw32_messages_init(char **respaths)
{
        char *messages;
        nserror res;
        const uint8_t *data;
        size_t data_size;
 
        res = nsw32_get_resource_data("messages", &data, &data_size);
        if (res == NSERROR_OK) {
                res = messages_add_from_inline(data, data_size);
        } else {
                /* Obtain path to messages */
                messages = filepath_find(respaths, "messages");
                if (messages == NULL) {
                        res = NSERROR_NOT_FOUND;
                } else {
                        res = messages_add_from_file(messages);
                        free(messages);
                }
        }
 
        return res;
}
 
 
/**
 * Construct a unix style argc/argv
 *
 * \param argc_out number of commandline arguments
 * \param argv_out string vector of command line arguments
 * \return NSERROR_OK on success else error code
 */
static nserror win32_to_unix_commandline(int *argc_out, char ***argv_out)
{
        int argc = 0;
        char **argv;
        int cura;
        LPWSTR *argvw;
        size_t len;
 
        argvw = CommandLineToArgvW(GetCommandLineW(), &argc);
        if (argvw == NULL) {
                return NSERROR_INVALID;
        }
 
        argv = malloc(sizeof(char *) * argc);
        if (argv == NULL) {
                return NSERROR_NOMEM;
        }
 
        for (cura = 0; cura < argc; cura++) {
 
                len = wcstombs(NULL, argvw[cura], 0) + 1;
                if (len > 0) {
                        argv[cura] = malloc(len);
                        if (argv[cura] == NULL) {
                                free(argv);
                                return NSERROR_NOMEM;
                        }
                } else {
                        free(argv);
                        return NSERROR_INVALID;
                }
 
                wcstombs(argv[cura], argvw[cura], len);
                /* alter windows-style forward slash flags to hyphen flags. */
                if (argv[cura][0] == '/') {
                        argv[cura][0] = '-';
                }
        }
 
        *argc_out = argc;
        *argv_out = argv;
 
        return NSERROR_OK;
}
 
 
static struct gui_misc_table win32_misc_table = {
        .schedule = win32_schedule,
        .present_cookies = nsw32_cookies_present,
};
 
/**
 * Entry point from windows
 **/
int WINAPI
WinMain(HINSTANCE hInstance, HINSTANCE hLastInstance, LPSTR lpcli, int ncmd)
{
        int argc;
        char **argv;
        char **respaths;
        char *nsw32_config_home = NULL;
        nserror ret;
        const char *addr;
        nsurl *url;
        struct netsurf_table win32_table = {
                .misc = &win32_misc_table,
                .window = win32_window_table,
                .corewindow = win32_core_window_table,
                .clipboard = win32_clipboard_table,
                .download = win32_download_table,
                .fetch = win32_fetch_table,
                .file = win32_file_table,
                .utf8 = win32_utf8_table,
                .bitmap = win32_bitmap_table,
                .layout = win32_layout_table,
        };
 
        ret = netsurf_register(&win32_table);
        if (ret != NSERROR_OK) {
                die("NetSurf operation table registration failed");
        }
 
        /* Save the application-instance handle. */
        hinst = hInstance;
 
        setbuf(stderr, NULL);
 
        ret = win32_to_unix_commandline(&argc, &argv);
        if (ret != NSERROR_OK) {
                /* no log as logging requires this for initialisation */
                return 1;
        }
 
        /* initialise logging - not fatal if it fails but not much we
         * can do about it
         */
        nslog_init(nslog_ensure, &argc, argv);
 
        /* build resource path string vector */
        respaths = nsws_init_resource("${APPDATA}\\NetSurf:${PROGRAMFILES}\\NetSurf\\NetSurf\\:"NETSURF_WINDOWS_RESPATH);
 
        /* Locate the correct user configuration directory path */
        ret = get_config_home(&nsw32_config_home);
        if (ret != NSERROR_OK) {
                NSLOG(netsurf, INFO,
                      "Unable to locate a configuration directory.");
        }
 
        /* Initialise user options */
        ret = nsw32_option_init(&argc, argv, respaths, nsw32_config_home);
        if (ret != NSERROR_OK) {
                NSLOG(netsurf, ERROR, "Options failed to initialise (%s)\n",
                      messages_get_errorcode(ret));
                return 1;
        }
 
        /* Initialise translated messages */
        ret = nsw32_messages_init(respaths);
        if (ret != NSERROR_OK) {
                fprintf(stderr, "Unable to load translated messages (%s)\n",
                        messages_get_errorcode(ret));
                NSLOG(netsurf, INFO, "Unable to load translated messages");
                /** \todo decide if message load faliure should be fatal */
        }
 
        /* common initialisation */
        ret = netsurf_init(NULL);
        if (ret != NSERROR_OK) {
                NSLOG(netsurf, INFO, "NetSurf failed to initialise");
                return 1;
        }
 
        browser_set_dpi(get_screen_dpi());
 
        urldb_load(nsoption_charp(url_file));
        urldb_load_cookies(nsoption_charp(cookie_file));
        hotlist_init(nsoption_charp(hotlist_path),
                        nsoption_charp(hotlist_path));
 
        ret = nsws_create_main_class(hInstance);
        ret = nsws_create_drawable_class(hInstance);
        ret = nsw32_create_corewindow_class(hInstance);
 
        nsoption_set_bool(target_blank, false);
 
        nsws_window_init_pointers(hInstance);
 
        /* If there is a url specified on the command line use it */
        if (argc > 1) {
                addr = argv[1];
        } else if (nsoption_charp(homepage_url) != NULL) {
                addr = nsoption_charp(homepage_url);
        } else {
                addr = NETSURF_HOMEPAGE;
        }
 
        NSLOG(netsurf, INFO, "calling browser_window_create");
 
        ret = nsurl_create(addr, &url);
        if (ret == NSERROR_OK) {
                ret = browser_window_create(BW_CREATE_HISTORY,
                                              url,
                                              NULL,
                                              NULL,
                                              NULL);
                nsurl_unref(url);
 
        }
        if (ret != NSERROR_OK) {
                win32_warning(messages_get_errorcode(ret), 0);
        } else {
                win32_run();
        }
 
        urldb_save_cookies(nsoption_charp(cookie_jar));
        urldb_save(nsoption_charp(url_file));
 
        netsurf_exit();
 
        /* finalise options */
        nsoption_finalise(nsoptions, nsoptions_default);
 
        /* finalise logging */
        nslog_finalise();
 
        return 0;
}