surf.c

   1 /* See LICENSE file for copyright and license details.
   2  *
   3  * To understand surf, start reading main().
   4  */
   5 #include <signal.h>
   6 #include <X11/X.h>
   7 #include <X11/Xatom.h>
   8 #include <gtk/gtk.h>
   9 #include <gdk/gdkx.h>
  10 #include <gdk/gdk.h>
  11 #include <gdk/gdkkeysyms.h>
  12 #include <string.h>
  13 #include <sys/types.h>
  14 #include <sys/wait.h>
  15 #include <unistd.h>
  16 #include <stdlib.h>
  17 #include <stdio.h>
  18 #include <webkit/webkit.h>
  19 #include <glib/gstdio.h>
  20 #include <JavaScriptCore/JavaScript.h>
  21
  22 #define LENGTH(x)               (sizeof x / sizeof x[0])
  23 #define CLEANMASK(mask)         (mask & ~(GDK_MOD2_MASK))
  24
  25 typedef union Arg Arg;
  26 union Arg {
  27         const gboolean b;
  28         const gint i;
  29         const void *v;
  30 };
  31
  32 typedef struct Client {
  33         GtkWidget *win, *scroll, *vbox, *urlbar, *searchbar, *indicator;
  34         WebKitWebView *view;
  35         WebKitDownload *download;
  36         gchar *title;
  37         gint progress;
  38         struct Client *next;
  39 } Client;
  40
  41 typedef struct Cookie {
  42         char *name;
  43         char *value;
  44         char *domain;
  45         char *path;
  46         struct Cookie *next;
  47 } Cookie;
  48
  49 typedef enum {
  50         Browser = 0x0001,
  51         SearchBar = 0x0010,
  52         UrlBar = 0x0100,
  53         Any = ~0,
  54 } KeyFocus;
  55
  56 typedef struct {
  57         guint mod;
  58         guint keyval;
  59         void (*func)(Client *c, const Arg *arg);
  60         const Arg arg;
  61         KeyFocus focus;
  62 } Key;
  63
  64 static Display *dpy;
  65 static Atom urlprop;
  66 static SoupCookieJar *cookiejar;
  67 static SoupSession *session;
  68 static Client *clients = NULL;
  69 /*static Cookie *cookies = NULL;*/
  70 static GdkNativeWindow embed = 0;
  71 static gboolean showxid = FALSE;
  72 static gboolean ignore_once = FALSE;
  73 static gchar winid[64];
  74 static gchar *progname;
  75
  76 static gchar *buildpath(const gchar *path);
  77 static void cleanup(void);
  78 static void clipboard(Client *c, const Arg *arg);
  79 static gchar *copystr(gchar **str, const gchar *src);
  80 static gboolean decidewindow(WebKitWebView *view, WebKitWebFrame *f, WebKitNetworkRequest *r, WebKitWebNavigationAction *n, WebKitWebPolicyDecision *p, Client *c);
  81 static void destroyclient(Client *c);
  82 static void destroywin(GtkWidget* w, Client *c);
  83 static void die(char *str);
  84 static void download(WebKitDownload *o, GParamSpec *pspec, Client *c);
  85 static void drawindicator(Client *c);
  86 static gboolean exposeindicator(GtkWidget *w, GdkEventExpose *e, Client *c);
  87 static gboolean initdownload(WebKitWebView *view, WebKitDownload *o, Client *c);
  88 static gchar *geturi(Client *c);
  89 static void hidesearch(Client *c, const Arg *arg);
  90 static void hideurl(Client *c, const Arg *arg);
  91 static gboolean keypress(GtkWidget* w, GdkEventKey *ev, Client *c);
  92 static void linkhover(WebKitWebView* page, const gchar* t, const gchar* l, Client *c);
  93 static void loadcommit(WebKitWebView *view, WebKitWebFrame *f, Client *c);
  94 static void loadstart(WebKitWebView *view, WebKitWebFrame *f, Client *c);
  95 static void loaduri(Client *c, const Arg *arg);
  96 static void navigate(Client *c, const Arg *arg);
  97 static Client *newclient(void);
  98 static void newproc(const gchar *url);
  99 static WebKitWebView *createwindow(WebKitWebView  *v, WebKitWebFrame *f, Client *c);
 100 static void pasteurl(GtkClipboard *clipboard, const gchar *text, gpointer d);
 101 static GdkFilterReturn processx(GdkXEvent *xevent, GdkEvent *event, gpointer d);
 102 static void print(Client *c, const Arg *arg);
 103 static void proccookies(SoupMessage *m, Client *c);
 104 static void progresschange(WebKitWebView *view, gint p, Client *c);
 105 static void request(SoupSession *s, SoupMessage *m, Client *c);
 106 static void reload(Client *c, const Arg *arg);
 107 static void rereadcookies(void);
 108 static void sigchld(int unused);
 109 static void setcookie(char *name, char *val, char *dom, char *path, long exp);
 110 static void setup(void);
 111 static void spawn(Client *c, const Arg *arg);
 112 static void titlechange(WebKitWebView* view, WebKitWebFrame* frame, const gchar* title, Client *c);
 113 static void scroll(Client *c, const Arg *arg);
 114 static void searchtext(Client *c, const Arg *arg);
 115 static void source(Client *c, const Arg *arg);
 116 static void showsearch(Client *c, const Arg *arg);
 117 static void showurl(Client *c, const Arg *arg);
 118 static void stop(Client *c, const Arg *arg);
 119 static void titlechange(WebKitWebView* view, WebKitWebFrame* frame, const gchar* title, Client *c);
 120 static gboolean unfocusbar(GtkWidget *w, GdkEventFocus *e, Client *c);
 121 static void usage(void);
 122 static void update(Client *c);
 123 static void updatewinid(Client *c);
 124 static void windowobjectcleared(GtkWidget *w, WebKitWebFrame *frame, JSContextRef js, JSObjectRef win, Client *c);
 125 static void zoom(Client *c, const Arg *arg);
 126
 127 /* configuration, allows nested code to access above variables */
 128 #include "config.h"
 129
 130 gchar *
 131 buildpath(const gchar *path) {
 132         gchar *apath, *p;
 133         FILE *f;
 134
 135         /* creating directory */
 136         if(path[0] == '/')
 137                 apath = g_strdup(path);
 138         else
 139                 apath = g_strconcat(g_get_home_dir(), "/", path, NULL);
 140         if((p = strrchr(apath, '/'))) {
 141                 *p = '\0';
 142                 g_mkdir_with_parents(apath, 0755);
 143                 *p = '/';
 144         }
 145         /* creating file (gives error when apath ends with "/") */
 146         if((f = g_fopen(apath, "a")))
 147                 fclose(f);
 148         return apath;
 149 }
 150
 151 void
 152 cleanup(void) {
 153         while(clients)
 154                 destroyclient(clients);
 155         g_free(cookiefile);
 156         g_free(dldir);
 157         g_free(scriptfile);
 158         g_free(stylefile);
 159 }
 160
 161 void
 162 clipboard(Client *c, const Arg *arg) {
 163         gboolean paste = *(gboolean *)arg;
 164
 165         if(paste)
 166                 gtk_clipboard_request_text(gtk_clipboard_get(GDK_SELECTION_PRIMARY), pasteurl, c);
 167         else
 168                 gtk_clipboard_set_text(gtk_clipboard_get(GDK_SELECTION_PRIMARY), webkit_web_view_get_uri(c->view), -1);
 169 }
 170
 171 gchar *
 172 copystr(gchar **str, const gchar *src) {
 173         gchar *tmp;
 174         tmp = g_strdup(src);
 175
 176         if(str && *str) {
 177                 g_free(*str);
 178                 *str = tmp;
 179         }
 180         return tmp;
 181 }
 182
 183 void
 184 destroyclient(Client *c) {
 185         Client *p;
 186
 187         gtk_widget_destroy(GTK_WIDGET(c->view));
 188         gtk_widget_destroy(c->scroll);
 189         gtk_widget_destroy(c->urlbar);
 190         gtk_widget_destroy(c->searchbar);
 191         gtk_widget_destroy(c->vbox);
 192         gtk_widget_destroy(c->win);
 193         for(p = clients; p && p->next != c; p = p->next);
 194         if(p)
 195                 p->next = c->next;
 196         else
 197                 clients = c->next;
 198         free(c);
 199         if(clients == NULL)
 200                 gtk_main_quit();
 201 }
 202
 203 gboolean
 204 decidewindow(WebKitWebView *view, WebKitWebFrame *f, WebKitNetworkRequest *r, WebKitWebNavigationAction *n, WebKitWebPolicyDecision *p, Client *c) {
 205         if(webkit_web_navigation_action_get_reason(n) == WEBKIT_WEB_NAVIGATION_REASON_LINK_CLICKED) {
 206                 webkit_web_policy_decision_ignore(p);
 207                 newproc(webkit_network_request_get_uri(r));
 208                 return TRUE;
 209         }
 210         return FALSE;
 211 }
 212
 213 void
 214 destroywin(GtkWidget* w, Client *c) {
 215         destroyclient(c);
 216 }
 217
 218 void
 219 die(char *str) {
 220         fputs(str, stderr);
 221         exit(EXIT_FAILURE);
 222 }
 223
 224 void
 225 drawindicator(Client *c) {
 226         gint width;
 227         gchar *uri;
 228         GtkWidget *w;
 229         GdkGC *gc;
 230         GdkColor fg;
 231
 232         uri = geturi(c);
 233         w = c->indicator;
 234         width = c->progress * w->allocation.width / 100;
 235         gc = gdk_gc_new(w->window);
 236         gdk_color_parse(strstr(uri, "https://") == uri ?
 237                         progress_trust : progress, &fg);
 238         gdk_gc_set_rgb_fg_color(gc, &fg);
 239         gdk_draw_rectangle(w->window,
 240                         w->style->bg_gc[GTK_WIDGET_STATE(w)],
 241                         TRUE, 0, 0, w->allocation.width, w->allocation.height);
 242         gdk_draw_rectangle(w->window, gc, TRUE, 0, 0, width,
 243                         w->allocation.height);
 244         g_object_unref(gc);
 245 }
 246
 247 gboolean
 248 exposeindicator(GtkWidget *w, GdkEventExpose *e, Client *c) {
 249         drawindicator(c);
 250         return TRUE;
 251 }
 252
 253 void
 254 download(WebKitDownload *o, GParamSpec *pspec, Client *c) {
 255         WebKitDownloadStatus status;
 256
 257         status = webkit_download_get_status(c->download);
 258         if(status == WEBKIT_DOWNLOAD_STATUS_STARTED || status == WEBKIT_DOWNLOAD_STATUS_CREATED) {
 259                 c->progress = (gint)(webkit_download_get_progress(c->download)*100);
 260         }
 261         update(c);
 262 }
 263
 264 gboolean
 265 initdownload(WebKitWebView *view, WebKitDownload *o, Client *c) {
 266         const gchar *filename;
 267         gchar *uri, *html;
 268
 269         stop(c, NULL);
 270         c->download = o;
 271         filename = webkit_download_get_suggested_filename(o);
 272         uri = g_strconcat("file://", dldir, "/", filename, NULL);
 273         webkit_download_set_destination_uri(c->download, uri);
 274         c->progress = 0;
 275         g_free(uri);
 276         html = g_strdup_printf("Download <b>%s</b>...", filename);
 277         webkit_web_view_load_html_string(c->view, html,
 278                         webkit_download_get_uri(c->download));
 279         g_signal_connect(c->download, "notify::progress", G_CALLBACK(download), c);
 280         g_signal_connect(c->download, "notify::status", G_CALLBACK(download), c);
 281         webkit_download_start(c->download);
 282
 283         c->title = copystr(&c->title, filename);
 284         update(c);
 285         g_free(html);
 286         return TRUE;
 287 }
 288
 289 gchar *
 290 geturi(Client *c) {
 291         gchar *uri;
 292
 293         if(!(uri = (gchar *)webkit_web_view_get_uri(c->view)))
 294                 uri = copystr(NULL, "about:blank");
 295         return uri;
 296 }
 297
 298 void
 299 hidesearch(Client *c, const Arg *arg) {
 300         gtk_widget_hide(c->searchbar);
 301         gtk_widget_grab_focus(GTK_WIDGET(c->view));
 302 }
 303
 304 void
 305 hideurl(Client *c, const Arg *arg) {
 306         gtk_widget_hide(c->urlbar);
 307         gtk_widget_grab_focus(GTK_WIDGET(c->view));
 308 }
 309
 310 gboolean
 311 keypress(GtkWidget* w, GdkEventKey *ev, Client *c) {
 312         guint i, focus;
 313         gboolean processed = FALSE;
 314
 315         if(ev->type != GDK_KEY_PRESS)
 316                 return FALSE;
 317         if(GTK_WIDGET_HAS_FOCUS(c->searchbar))
 318                 focus = SearchBar;
 319         else if(GTK_WIDGET_HAS_FOCUS(c->urlbar))
 320                 focus = UrlBar;
 321         else
 322                 focus = Browser;
 323         updatewinid(c);
 324         for(i = 0; i < LENGTH(keys); i++) {
 325                 if(focus & keys[i].focus
 326                                 && gdk_keyval_to_lower(ev->keyval) == keys[i].keyval
 327                                 && CLEANMASK(ev->state) == keys[i].mod
 328                                 && keys[i].func) {
 329                         keys[i].func(c, &(keys[i].arg));
 330                         processed = TRUE;
 331                 }
 332         }
 333         return processed;
 334 }
 335
 336 void
 337 linkhover(WebKitWebView* page, const gchar* t, const gchar* l, Client *c) {
 338         if(l)
 339                 gtk_window_set_title(GTK_WINDOW(c->win), l);
 340         else
 341                 update(c);
 342 }
 343
 344 void
 345 loadcommit(WebKitWebView *view, WebKitWebFrame *f, Client *c) {
 346         gchar *uri;
 347
 348         ignore_once = TRUE;
 349         uri = geturi(c);
 350         XChangeProperty(dpy, GDK_WINDOW_XID(GTK_WIDGET(c->win)->window), urlprop,
 351                         XA_STRING, 8, PropModeReplace, (unsigned char *)uri,
 352                         strlen(uri) + 1);
 353 }
 354
 355 void
 356 loadstart(WebKitWebView *view, WebKitWebFrame *f, Client *c) {
 357         c->progress = 0;
 358         update(c);
 359 }
 360
 361 void
 362 loaduri(Client *c, const Arg *arg) {
 363         gchar *u;
 364         const gchar *uri = (gchar *)arg->v;
 365         if(!uri)
 366                 uri = gtk_entry_get_text(GTK_ENTRY(c->urlbar));
 367         u = g_strrstr(uri, "://") ? g_strdup(uri)
 368                 : g_strdup_printf("http://%s", uri);
 369         webkit_web_view_load_uri(c->view, u);
 370         c->progress = 0;
 371         c->title = copystr(&c->title, u);
 372         g_free(u);
 373         update(c);
 374 }
 375
 376 void
 377 navigate(Client *c, const Arg *arg) {
 378         gint steps = *(gint *)arg;
 379         webkit_web_view_go_back_or_forward(c->view, steps);
 380 }
 381
 382 Client *
 383 newclient(void) {
 384         Client *c;
 385         WebKitWebSettings *settings;
 386         gchar *uri;
 387
 388         if(!(c = calloc(1, sizeof(Client))))
 389                 die("Cannot malloc!\n");
 390         /* Window */
 391         if(embed) {
 392                 c->win = gtk_plug_new(embed);
 393         }
 394         else {
 395                 c->win = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 396                 gtk_window_set_wmclass(GTK_WINDOW(c->win), "surf", "surf");
 397         }
 398         gtk_window_set_default_size(GTK_WINDOW(c->win), 800, 600);
 399         g_signal_connect(G_OBJECT(c->win), "destroy", G_CALLBACK(destroywin), c);
 400         g_signal_connect(G_OBJECT(c->win), "key-press-event", G_CALLBACK(keypress), c);
 401
 402         /* VBox */
 403         c->vbox = gtk_vbox_new(FALSE, 0);
 404
 405         /* scrolled window */
 406         c->scroll = gtk_scrolled_window_new(NULL, NULL);
 407         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(c->scroll),
 408                         GTK_POLICY_NEVER, GTK_POLICY_NEVER);
 409
 410         /* webview */
 411         c->view = WEBKIT_WEB_VIEW(webkit_web_view_new());
 412         g_signal_connect(G_OBJECT(c->view), "title-changed", G_CALLBACK(titlechange), c);
 413         g_signal_connect(G_OBJECT(c->view), "load-progress-changed", G_CALLBACK(progresschange), c);
 414         g_signal_connect(G_OBJECT(c->view), "load-committed", G_CALLBACK(loadcommit), c);
 415         g_signal_connect(G_OBJECT(c->view), "load-started", G_CALLBACK(loadstart), c);
 416         g_signal_connect(G_OBJECT(c->view), "hovering-over-link", G_CALLBACK(linkhover), c);
 417         g_signal_connect(G_OBJECT(c->view), "create-web-view", G_CALLBACK(createwindow), c);
 418         g_signal_connect(G_OBJECT(c->view), "new-window-policy-decision-requested", G_CALLBACK(decidewindow), c);
 419         g_signal_connect(G_OBJECT(c->view), "download-requested", G_CALLBACK(initdownload), c);
 420         g_signal_connect(G_OBJECT(c->view), "window-object-cleared", G_CALLBACK(windowobjectcleared), c);
 421         g_signal_connect_after(session, "request-started", G_CALLBACK(request), c);
 422
 423         /* urlbar */
 424         c->urlbar = gtk_entry_new();
 425         gtk_entry_set_has_frame(GTK_ENTRY(c->urlbar), FALSE);
 426         g_signal_connect(G_OBJECT(c->urlbar), "focus-out-event", G_CALLBACK(unfocusbar), c);
 427
 428         /* searchbar */
 429         c->searchbar = gtk_entry_new();
 430         gtk_entry_set_has_frame(GTK_ENTRY(c->searchbar), FALSE);
 431         g_signal_connect(G_OBJECT(c->searchbar), "focus-out-event", G_CALLBACK(unfocusbar), c);
 432
 433         /* indicator */
 434         c->indicator = gtk_drawing_area_new();
 435         gtk_widget_set_size_request(c->indicator, 0, 2);
 436         g_signal_connect (G_OBJECT (c->indicator), "expose_event",
 437                         G_CALLBACK (exposeindicator), c);
 438
 439         /* Arranging */
 440         gtk_container_add(GTK_CONTAINER(c->scroll), GTK_WIDGET(c->view));
 441         gtk_container_add(GTK_CONTAINER(c->win), c->vbox);
 442         gtk_container_add(GTK_CONTAINER(c->vbox), c->scroll);
 443         gtk_container_add(GTK_CONTAINER(c->vbox), c->searchbar);
 444         gtk_container_add(GTK_CONTAINER(c->vbox), c->urlbar);
 445         gtk_container_add(GTK_CONTAINER(c->vbox), c->indicator);
 446
 447         /* Setup */
 448         gtk_box_set_child_packing(GTK_BOX(c->vbox), c->urlbar, FALSE, FALSE, 0, GTK_PACK_START);
 449         gtk_box_set_child_packing(GTK_BOX(c->vbox), c->searchbar, FALSE, FALSE, 0, GTK_PACK_START);
 450         gtk_box_set_child_packing(GTK_BOX(c->vbox), c->indicator, FALSE, FALSE, 0, GTK_PACK_START);
 451         gtk_box_set_child_packing(GTK_BOX(c->vbox), c->scroll, TRUE, TRUE, 0, GTK_PACK_START);
 452         gtk_widget_grab_focus(GTK_WIDGET(c->view));
 453         gtk_widget_hide_all(c->searchbar);
 454         gtk_widget_hide_all(c->urlbar);
 455         gtk_widget_show(c->vbox);
 456         gtk_widget_show(c->indicator);
 457         gtk_widget_show(c->scroll);
 458         gtk_widget_show(GTK_WIDGET(c->view));
 459         gtk_widget_show(c->win);
 460         gdk_window_set_events(GTK_WIDGET(c->win)->window, GDK_ALL_EVENTS_MASK);
 461         gdk_window_add_filter(GTK_WIDGET(c->win)->window, processx, c);
 462         webkit_web_view_set_full_content_zoom(c->view, TRUE);
 463         settings = webkit_web_view_get_settings(c->view);
 464         g_object_set(G_OBJECT(settings), "user-agent", useragent, NULL);
 465         uri = g_strconcat("file://", stylefile, NULL);
 466         g_object_set(G_OBJECT(settings), "user-stylesheet-uri", uri, NULL);
 467         g_free(uri);
 468
 469         c->download = NULL;
 470         c->title = NULL;
 471         c->next = clients;
 472         clients = c;
 473         if(showxid) {
 474                 gdk_display_sync(gtk_widget_get_display(c->win));
 475                 printf("%u\n", (guint)GDK_WINDOW_XID(GTK_WIDGET(c->win)->window));
 476                 fflush(NULL);
 477         }
 478         return c;
 479 }
 480
 481 void
 482 newproc(const gchar *url) {
 483         guint i = 0, urlindex;
 484         const gchar *cmd[7];
 485         const Arg arg = { .v = (void *)cmd };
 486         gchar tmp[64];
 487
 488         cmd[i++] = progname;
 489         if(embed) {
 490                 cmd[i++] = "-e";
 491                 snprintf(tmp, LENGTH(tmp), "%u\n", (int)embed);
 492                 cmd[i++] = tmp;
 493         }
 494         if(showxid) {
 495                 cmd[i++] = "-x";
 496         }
 497         cmd[i++] = "--";
 498         urlindex = i;
 499         if(url)
 500                 cmd[i++] = url;
 501         cmd[i++] = NULL;
 502         spawn(NULL, &arg);
 503 }
 504
 505 WebKitWebView *
 506 createwindow(WebKitWebView  *v, WebKitWebFrame *f, Client *c) {
 507         Client *n = newclient();
 508         return n->view;
 509 }
 510
 511
 512 void
 513 pasteurl(GtkClipboard *clipboard, const gchar *text, gpointer d) {
 514         Arg arg = {.v = text };
 515         if(text != NULL)
 516                 loaduri((Client *) d, &arg);
 517 }
 518
 519 GdkFilterReturn
 520 processx(GdkXEvent *e, GdkEvent *event, gpointer d) {
 521         Client *c = (Client *)d;
 522         XPropertyEvent *ev;
 523         Atom adummy;
 524         gint idummy;
 525         unsigned long ldummy;
 526         unsigned char *buf = NULL;
 527         Arg arg;
 528
 529         if(((XEvent *)e)->type == PropertyNotify) {
 530                 ev = &((XEvent *)e)->xproperty;
 531                 if(ev->atom == urlprop && ev->state == PropertyNewValue) {
 532                         if(ignore_once)
 533                                ignore_once = FALSE;
 534                         else {
 535                                 XGetWindowProperty(dpy, ev->window, urlprop, 0L, BUFSIZ, False, XA_STRING,
 536                                         &adummy, &idummy, &ldummy, &ldummy, &buf);
 537                                 arg.v = buf;
 538                                 loaduri(c, &arg);
 539                                 XFree(buf);
 540                         }
 541                         return GDK_FILTER_REMOVE;
 542                 }
 543         }
 544         return GDK_FILTER_CONTINUE;
 545 }
 546
 547 void
 548 print(Client *c, const Arg *arg) {
 549         webkit_web_frame_print(webkit_web_view_get_main_frame(c->view));
 550 }
 551
 552 void
 553 proccookies(SoupMessage *m, Client *c) {
 554         GSList *l;
 555         SoupCookie *co;
 556         long t;
 557
 558         rereadcookies();
 559         for (l = soup_cookies_from_response(m); l; l = l->next){
 560                 co = (SoupCookie *)l->data;
 561                 t = co->expires ?  soup_date_to_time_t(co->expires) : 0;
 562                 setcookie(co->name, co->value, co->domain, co->value, t);
 563         }
 564         g_slist_free(l);
 565 }
 566
 567 void
 568 progresschange(WebKitWebView* view, gint p, Client *c) {
 569         c->progress = p;
 570         update(c);
 571 }
 572
 573 void
 574 request(SoupSession *s, SoupMessage *m, Client *c) {
 575         soup_message_add_header_handler(m, "got-headers", "Set-Cookie",
 576                         G_CALLBACK(proccookies), c);
 577 }
 578
 579 void
 580 reload(Client *c, const Arg *arg) {
 581         gboolean nocache = *(gboolean *)arg;
 582         if(nocache)
 583                  webkit_web_view_reload_bypass_cache(c->view);
 584         else
 585                  webkit_web_view_reload(c->view);
 586 }
 587
 588 void
 589 rereadcookies(void) {
 590
 591 }
 592
 593 void
 594 scroll(Client *c, const Arg *arg) {
 595         gdouble v;
 596         GtkAdjustment *a;
 597
 598         a = gtk_scrolled_window_get_vadjustment(GTK_SCROLLED_WINDOW(c->scroll));
 599         v = gtk_adjustment_get_value(a);
 600         v += gtk_adjustment_get_step_increment(a) * arg->i;
 601         v = MAX(v, 0.0);
 602         v = MIN(v, gtk_adjustment_get_upper(a) - gtk_adjustment_get_page_size(a));
 603         gtk_adjustment_set_value(a, v);
 604 }
 605
 606 void
 607 sigchld(int unused) {
 608         if(signal(SIGCHLD, sigchld) == SIG_ERR)
 609                 die("Can't install SIGCHLD handler");
 610         while(0 < waitpid(-1, NULL, WNOHANG));
 611 }
 612
 613 void
 614 setcookie(char *name, char *val, char *dom, char *path, long exp) {
 615
 616 }
 617
 618 void
 619 setup(void) {
 620         SoupSession *s;
 621
 622         /* clean up any zombies immediately */
 623         sigchld(0);
 624         gtk_init(NULL, NULL);
 625         if (!g_thread_supported())
 626                 g_thread_init(NULL);
 627
 628         dpy = GDK_DISPLAY();
 629         session = webkit_get_default_session();
 630         urlprop = XInternAtom(dpy, "_SURF_URL", False);
 631
 632         /* create dirs and files */
 633         cookiefile = buildpath(cookiefile);
 634         dldir = buildpath(dldir);
 635         scriptfile = buildpath(scriptfile);
 636         stylefile = buildpath(stylefile);
 637
 638         /* cookie persistance */
 639         s = webkit_get_default_session();
 640         cookiejar = soup_cookie_jar_text_new(cookiefile, FALSE);
 641         soup_session_add_feature(s, SOUP_SESSION_FEATURE(cookiejar));
 642 }
 643
 644 void
 645 showsearch(Client *c, const Arg *arg) {
 646         hideurl(c, NULL);
 647         gtk_widget_show(c->searchbar);
 648         gtk_widget_grab_focus(c->searchbar);
 649 }
 650
 651 void
 652 source(Client *c, const Arg *arg) {
 653         Arg a = { .b = FALSE };
 654         gboolean s;
 655
 656         s = webkit_web_view_get_view_source_mode(c->view);
 657         webkit_web_view_set_view_source_mode(c->view, !s);
 658         reload(c, &a);
 659 }
 660
 661 void
 662 searchtext(Client *c, const Arg *arg) {
 663         const gchar *text;
 664         gboolean forward = *(gboolean *)arg;
 665         text = gtk_entry_get_text(GTK_ENTRY(c->searchbar));
 666         webkit_web_view_search_text(c->view, text, FALSE, forward, TRUE);
 667         webkit_web_view_mark_text_matches(c->view, text, FALSE, 0);
 668 }
 669
 670 void
 671 showurl(Client *c, const Arg *arg) {
 672         gchar *uri;
 673
 674         hidesearch(c, NULL);
 675         uri = geturi(c);
 676         gtk_entry_set_text(GTK_ENTRY(c->urlbar), uri);
 677         gtk_widget_show(c->urlbar);
 678         gtk_widget_grab_focus(c->urlbar);
 679 }
 680
 681 void
 682 stop(Client *c, const Arg *arg) {
 683         if(c->download)
 684                 webkit_download_cancel(c->download);
 685         else
 686                 webkit_web_view_stop_loading(c->view);
 687         c->download = NULL;
 688 }
 689
 690 void
 691 spawn(Client *c, const Arg *arg) {
 692         if(fork() == 0) {
 693                 if(dpy)
 694                         close(ConnectionNumber(dpy));
 695                 setsid();
 696                 execvp(((char **)arg->v)[0], (char **)arg->v);
 697                 fprintf(stderr, "tabbed: execvp %s", ((char **)arg->v)[0]);
 698                 perror(" failed");
 699                 exit(0);
 700         }
 701 }
 702
 703 void
 704 titlechange(WebKitWebView *v, WebKitWebFrame *f, const gchar *t, Client *c) {
 705         c->title = copystr(&c->title, t);
 706         update(c);
 707 }
 708
 709 gboolean
 710 unfocusbar(GtkWidget *w, GdkEventFocus *e, Client *c) {
 711         hidesearch(c, NULL);
 712         hideurl(c, NULL);
 713         return FALSE;
 714 }
 715
 716 void
 717 usage(void) {
 718         fputs("surf - simple browser\n", stderr);
 719         die("usage: surf [-e Window] [-x] [uri]\n");
 720 }
 721
 722 void
 723 update(Client *c) {
 724         gchar *t;
 725
 726         if(c->progress == 100)
 727                 t = g_strdup(c->title);
 728         else
 729                 t = g_strdup_printf("%s [%i%%]", c->title, c->progress);
 730         drawindicator(c);
 731         gtk_window_set_title(GTK_WINDOW(c->win), t);
 732         g_free(t);
 733
 734 }
 735
 736 void
 737 updatewinid(Client *c) {
 738         snprintf(winid, LENGTH(winid), "%u",
 739                         (int)GDK_WINDOW_XID(GTK_WIDGET(c->win)->window));
 740 }
 741
 742 void
 743 windowobjectcleared(GtkWidget *w, WebKitWebFrame *frame, JSContextRef js, JSObjectRef win, Client *c) {
 744         JSStringRef jsscript;
 745         gchar *script;
 746         JSValueRef exception = NULL;
 747         GError *error;
 748
 749         if(g_file_get_contents(scriptfile, &script, NULL, &error)) {
 750                 jsscript = JSStringCreateWithUTF8CString(script);
 751                 JSEvaluateScript(js, jsscript, JSContextGetGlobalObject(js), NULL, 0, &exception);
 752         }
 753 }
 754
 755 void
 756 zoom(Client *c, const Arg *arg) {
 757         if(arg->i < 0)          /* zoom out */
 758                 webkit_web_view_zoom_out(c->view);
 759         else if(arg->i > 0)     /* zoom in */
 760                 webkit_web_view_zoom_in(c->view);
 761         else                    /* reset */
 762                 webkit_web_view_set_zoom_level(c->view, 1.0);
 763 }
 764
 765 int main(int argc, char *argv[]) {
 766         int i;
 767         Arg arg;
 768
 769         progname = argv[0];
 770         /* command line args */
 771         for(i = 1, arg.v = NULL; i < argc && argv[i][0] == '-'; i++) {
 772                 if(!strcmp(argv[i], "-x"))
 773                         showxid = TRUE;
 774                 else if(!strcmp(argv[i], "-e")) {
 775                         if(++i < argc)
 776                                 embed = atoi(argv[i]);
 777                         else
 778                                 usage();
 779                 }
 780                 else if(!strcmp(argv[i], "--")) {
 781                         i++;
 782                         break;
 783                 }
 784                 else if(!strcmp(argv[i], "-v"))
 785                         die("surf-"VERSION", © 2009 surf engineers, see LICENSE for details\n");
 786                 else
 787                         usage();
 788         }
 789         if(i < argc)
 790                 arg.v = argv[i];
 791         setup();
 792         newclient();
 793         if(arg.v) {
 794                 loaduri(clients, &arg);
 795         }
 796         gtk_main();
 797         cleanup();
 798         return EXIT_SUCCESS;
 799 }