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 #include <sys/file.h>
  22
  23 #define LENGTH(x)               (sizeof x / sizeof x[0])
  24
  25 enum { AtomFind, AtomGo, AtomUri, AtomLast };
  26
  27 typedef union Arg Arg;
  28 union Arg {
  29         gboolean b;
  30         gint i;
  31         const void *v;
  32 };
  33
  34 typedef struct Client {
  35         GtkWidget *win, *scroll, *vbox, *indicator;
  36         WebKitWebView *view;
  37         char *title, *linkhover;
  38         const char *uri, *needle;
  39         gint progress;
  40         gboolean sslfailed;
  41         struct Client *next;
  42         gboolean zoomed;
  43 } Client;
  44
  45 typedef struct {
  46         char *label;
  47         void (*func)(Client *c, const Arg *arg);
  48         const Arg arg;
  49 } Item;
  50
  51 typedef struct {
  52         guint mod;
  53         guint keyval;
  54         void (*func)(Client *c, const Arg *arg);
  55         const Arg arg;
  56 } Key;
  57
  58 static Display *dpy;
  59 static Atom atoms[AtomLast];
  60 static Client *clients = NULL;
  61 static GdkNativeWindow embed = 0;
  62 static gboolean showxid = FALSE;
  63 static char winid[64];
  64 static char *progname;
  65 static gboolean loadimage = 1, plugin = 1, script = 1;
  66
  67 static char *buildpath(const char *path);
  68 static void cleanup(void);
  69 static void clipboard(Client *c, const Arg *arg);
  70 static char *copystr(char **str, const char *src);
  71 static WebKitWebView *createwindow(WebKitWebView *v, WebKitWebFrame *f, Client *c);
  72 static gboolean decidedownload(WebKitWebView *v, WebKitWebFrame *f, WebKitNetworkRequest *r, gchar *m,  WebKitWebPolicyDecision *p, Client *c);
  73 static gboolean decidewindow(WebKitWebView *v, WebKitWebFrame *f, WebKitNetworkRequest *r, WebKitWebNavigationAction *n, WebKitWebPolicyDecision *p, Client *c);
  74 static void destroyclient(Client *c);
  75 static void destroywin(GtkWidget* w, Client *c);
  76 static void die(char *str);
  77 static void drawindicator(Client *c);
  78 static gboolean exposeindicator(GtkWidget *w, GdkEventExpose *e, Client *c);
  79 static void find(Client *c, const Arg *arg);
  80 static const char *getatom(Client *c, int a);
  81 static const char *getcookies(SoupURI *uri);
  82 static char *geturi(Client *c);
  83 void gotheaders(SoupMessage *msg, gpointer user_data);
  84 static gboolean initdownload(WebKitWebView *v, WebKitDownload *o, Client *c);
  85 static gboolean keypress(GtkWidget *w, GdkEventKey *ev, Client *c);
  86 static void linkhover(WebKitWebView *v, const char* t, const char* l, Client *c);
  87 static void loadstatuschange(WebKitWebView *view, GParamSpec *pspec, Client *c);
  88 static void loaduri(Client *c, const Arg *arg);
  89 static void navigate(Client *c, const Arg *arg);
  90 static Client *newclient(void);
  91 static void newwindow(Client *c, const Arg *arg);
  92 static void newrequest(SoupSession *s, SoupMessage *msg, gpointer v);
  93 static void pasteuri(GtkClipboard *clipboard, const char *text, gpointer d);
  94 static void print(Client *c, const Arg *arg);
  95 static GdkFilterReturn processx(GdkXEvent *xevent, GdkEvent *event, gpointer d);
  96 static void progresschange(WebKitWebView *view, GParamSpec *pspec, Client *c);
  97 static void reload(Client *c, const Arg *arg);
  98 static void resize(GtkWidget *w, GtkAllocation *a, Client *c);
  99 static void scroll(Client *c, const Arg *arg);
 100 static void setatom(Client *c, int a, const char *v);
 101 static void setcookie(SoupCookie *c);
 102 static void setup(void);
 103 static void sigchld(int unused);
 104 static void source(Client *c, const Arg *arg);
 105 static void spawn(Client *c, const Arg *arg);
 106 static void eval(Client *c, const Arg *arg);
 107 static void stop(Client *c, const Arg *arg);
 108 static void titlechange(WebKitWebView *v, WebKitWebFrame* frame, const char* title, Client *c);
 109 static void update(Client *c);
 110 static void updatewinid(Client *c);
 111 static void usage(void);
 112 static void windowobjectcleared(GtkWidget *w, WebKitWebFrame *frame, JSContextRef js, JSObjectRef win, Client *c);
 113 static void zoom(Client *c, const Arg *arg);
 114
 115 /* configuration, allows nested code to access above variables */
 116 #include "config.h"
 117
 118 char *
 119 buildpath(const char *path) {
 120         char *apath, *p;
 121         FILE *f;
 122
 123         /* creating directory */
 124         if(path[0] == '/')
 125                 apath = g_strdup(path);
 126         else
 127                 apath = g_strconcat(g_get_home_dir(), "/", path, NULL);
 128         if((p = strrchr(apath, '/'))) {
 129                 *p = '\0';
 130                 g_mkdir_with_parents(apath, 0700);
 131                 g_chmod(apath, 0700); /* in case it existed */
 132                 *p = '/';
 133         }
 134         /* creating file (gives error when apath ends with "/") */
 135         if((f = fopen(apath, "a"))) {
 136                 g_chmod(apath, 0600); /* always */
 137                 fclose(f);
 138         }
 139         return apath;
 140 }
 141
 142 void
 143 cleanup(void) {
 144         while(clients)
 145                 destroyclient(clients);
 146         g_free(cookiefile);
 147         g_free(scriptfile);
 148         g_free(stylefile);
 149 }
 150
 151 void
 152 evalscript(WebKitWebFrame *frame, JSContextRef js, char *script, char* scriptname) {
 153         JSStringRef jsscript, jsscriptname;
 154         JSValueRef exception = NULL;
 155
 156         jsscript = JSStringCreateWithUTF8CString(script);
 157         jsscriptname = JSStringCreateWithUTF8CString(scriptname);
 158         JSEvaluateScript(js, jsscript, JSContextGetGlobalObject(js), jsscriptname, 0, &exception);
 159         JSStringRelease(jsscript);
 160         JSStringRelease(jsscriptname);
 161 }
 162
 163 void
 164 runscript(WebKitWebFrame *frame, JSContextRef js) {
 165         char *script;
 166         GError *error;
 167
 168         if(g_file_get_contents(scriptfile, &script, NULL, &error)) {
 169                 evalscript(frame, webkit_web_frame_get_global_context(frame), script, scriptfile);
 170         }
 171 }
 172
 173 void
 174 clipboard(Client *c, const Arg *arg) {
 175         gboolean paste = *(gboolean *)arg;
 176
 177         if(paste)
 178                 gtk_clipboard_request_text(gtk_clipboard_get(GDK_SELECTION_PRIMARY), pasteuri, c);
 179         else
 180                 gtk_clipboard_set_text(gtk_clipboard_get(GDK_SELECTION_PRIMARY), c->linkhover ? c->linkhover : geturi(c), -1);
 181 }
 182
 183 char *
 184 copystr(char **str, const char *src) {
 185         char *tmp;
 186         tmp = g_strdup(src);
 187
 188         if(str && *str) {
 189                 g_free(*str);
 190                 *str = tmp;
 191         }
 192         return tmp;
 193 }
 194
 195 WebKitWebView *
 196 createwindow(WebKitWebView  *v, WebKitWebFrame *f, Client *c) {
 197         Client *n = newclient();
 198         return n->view;
 199 }
 200
 201 gboolean
 202 decidedownload(WebKitWebView *v, WebKitWebFrame *f, WebKitNetworkRequest *r, gchar *m,  WebKitWebPolicyDecision *p, Client *c) {
 203         if(!webkit_web_view_can_show_mime_type(v, m)) {
 204                 webkit_web_policy_decision_download(p);
 205                 return TRUE;
 206         }
 207         return FALSE;
 208 }
 209
 210 gboolean
 211 decidewindow(WebKitWebView *view, WebKitWebFrame *f, WebKitNetworkRequest *r, WebKitWebNavigationAction *n, WebKitWebPolicyDecision *p, Client *c) {
 212         Arg arg;
 213
 214         if(webkit_web_navigation_action_get_reason(n) == WEBKIT_WEB_NAVIGATION_REASON_LINK_CLICKED) {
 215                 webkit_web_policy_decision_ignore(p);
 216                 arg.v = (void *)webkit_network_request_get_uri(r);
 217                 newwindow(NULL, &arg);
 218                 return TRUE;
 219         }
 220         return FALSE;
 221 }
 222
 223 void
 224 destroyclient(Client *c) {
 225         Client *p;
 226
 227         webkit_web_view_stop_loading(c->view);
 228         gtk_widget_destroy(c->indicator);
 229         gtk_widget_destroy(GTK_WIDGET(c->view));
 230         gtk_widget_destroy(c->scroll);
 231         gtk_widget_destroy(c->vbox);
 232         gtk_widget_destroy(c->win);
 233
 234         for(p = clients; p && p->next != c; p = p->next);
 235         if(p)
 236                 p->next = c->next;
 237         else
 238                 clients = c->next;
 239         free(c);
 240         if(clients == NULL)
 241                 gtk_main_quit();
 242 }
 243
 244 void
 245 destroywin(GtkWidget* w, Client *c) {
 246         destroyclient(c);
 247 }
 248
 249 void
 250 die(char *str) {
 251         fputs(str, stderr);
 252         exit(EXIT_FAILURE);
 253 }
 254
 255 void
 256 drawindicator(Client *c) {
 257         gint width;
 258         const char *uri;
 259         GtkWidget *w;
 260         GdkGC *gc;
 261         GdkColor fg;
 262
 263         uri = geturi(c);
 264         w = c->indicator;
 265         width = c->progress * w->allocation.width / 100;
 266         gc = gdk_gc_new(w->window);
 267         if(strstr(uri, "https://") == uri)
 268                 gdk_color_parse(c->sslfailed ?
 269                                 progress_untrust : progress_trust, &fg);
 270         else
 271                 gdk_color_parse(progress, &fg);
 272         gdk_gc_set_rgb_fg_color(gc, &fg);
 273         gdk_draw_rectangle(w->window,
 274                         w->style->bg_gc[GTK_WIDGET_STATE(w)],
 275                         TRUE, 0, 0, w->allocation.width, w->allocation.height);
 276         gdk_draw_rectangle(w->window, gc, TRUE, 0, 0, width,
 277                         w->allocation.height);
 278         g_object_unref(gc);
 279 }
 280
 281 gboolean
 282 exposeindicator(GtkWidget *w, GdkEventExpose *e, Client *c) {
 283         drawindicator(c);
 284         return TRUE;
 285 }
 286
 287 void
 288 find(Client *c, const Arg *arg) {
 289         const char *s;
 290
 291         s = getatom(c, AtomFind);
 292         gboolean forward = *(gboolean *)arg;
 293         webkit_web_view_search_text(c->view, s, FALSE, forward, TRUE);
 294 }
 295
 296 const char *
 297 getcookies(SoupURI *uri) {
 298         const char *c;
 299         SoupCookieJar *j = soup_cookie_jar_text_new(cookiefile, TRUE);
 300         c = soup_cookie_jar_get_cookies(j, uri, TRUE);
 301         g_object_unref(j);
 302         return c;
 303 }
 304
 305 const char *
 306 getatom(Client *c, int a) {
 307         static char buf[BUFSIZ];
 308         Atom adummy;
 309         int idummy;
 310         unsigned long ldummy;
 311         unsigned char *p = NULL;
 312
 313         XGetWindowProperty(dpy, GDK_WINDOW_XID(GTK_WIDGET(c->win)->window),
 314                         atoms[a], 0L, BUFSIZ, False, XA_STRING,
 315                         &adummy, &idummy, &ldummy, &ldummy, &p);
 316         if(p)
 317                 strncpy(buf, (char *)p, LENGTH(buf)-1);
 318         else
 319                 buf[0] = '\0';
 320         XFree(p);
 321         return buf;
 322 }
 323
 324 char *
 325 geturi(Client *c) {
 326         char *uri;
 327
 328         if(!(uri = (char *)webkit_web_view_get_uri(c->view)))
 329                 uri = "about:blank";
 330         return uri;
 331 }
 332
 333 void
 334 gotheaders(SoupMessage *msg, gpointer v) {
 335         SoupURI *uri;
 336         GSList *l, *p;
 337
 338         uri = soup_message_get_uri(msg);
 339         for(p = l = soup_cookies_from_response(msg); p;
 340                 p = g_slist_next(p))  {
 341                 setcookie((SoupCookie *)p->data);
 342         }
 343         soup_cookies_free(l);
 344 }
 345
 346 gboolean
 347 initdownload(WebKitWebView *view, WebKitDownload *o, Client *c) {
 348         Arg arg;
 349
 350         updatewinid(c);
 351         arg = (Arg)DOWNLOAD((char *)webkit_download_get_uri(o));
 352         spawn(c, &arg);
 353         return FALSE;
 354 }
 355
 356 gboolean
 357 keypress(GtkWidget* w, GdkEventKey *ev, Client *c) {
 358         guint i;
 359         gboolean processed = FALSE;
 360
 361         updatewinid(c);
 362         for(i = 0; i < LENGTH(keys); i++) {
 363                 if(gdk_keyval_to_lower(ev->keyval) == keys[i].keyval
 364                                 && (ev->state & keys[i].mod) == keys[i].mod
 365                                 && keys[i].func) {
 366                         keys[i].func(c, &(keys[i].arg));
 367                         processed = TRUE;
 368                 }
 369         }
 370         return processed;
 371 }
 372
 373 void
 374 linkhover(WebKitWebView *v, const char* t, const char* l, Client *c) {
 375         if(l) {
 376                 c->linkhover = copystr(&c->linkhover, l);
 377         }
 378         else if(c->linkhover) {
 379                 free(c->linkhover);
 380                 c->linkhover = NULL;
 381         }
 382         update(c);
 383 }
 384
 385 void
 386 loadstatuschange(WebKitWebView *view, GParamSpec *pspec, Client *c) {
 387         WebKitWebFrame *frame;
 388         WebKitWebDataSource *src;
 389         WebKitNetworkRequest *request;
 390         SoupMessage *msg;
 391         char *uri;
 392
 393         switch(webkit_web_view_get_load_status (c->view)) {
 394         case WEBKIT_LOAD_COMMITTED:
 395                 uri = geturi(c);
 396                 if(strstr(uri, "https://") == uri) {
 397                         frame = webkit_web_view_get_main_frame(c->view);
 398                         src = webkit_web_frame_get_data_source(frame);
 399                         request = webkit_web_data_source_get_request(src);
 400                         msg = webkit_network_request_get_message(request);
 401                         c->sslfailed = soup_message_get_flags(msg)
 402                                        ^ SOUP_MESSAGE_CERTIFICATE_TRUSTED;
 403                 }
 404                 setatom(c, AtomUri, uri);
 405                 break;
 406         case WEBKIT_LOAD_FINISHED:
 407                 c->progress = 0;
 408                 update(c);
 409                 break;
 410         default:
 411                 break;
 412         }
 413 }
 414
 415 void
 416 loaduri(Client *c, const Arg *arg) {
 417         char *u;
 418         const char *uri = (char *)arg->v;
 419         Arg a = { .b = FALSE };
 420
 421         if(strcmp(uri, "") == 0)
 422                 return;
 423         u = g_strrstr(uri, "://") ? g_strdup(uri)
 424                 : g_strdup_printf("http://%s", uri);
 425         /* prevents endless loop */
 426         if(c->uri && strcmp(u, c->uri) == 0) {
 427                 reload(c, &a);
 428         }
 429         else {
 430                 webkit_web_view_load_uri(c->view, u);
 431                 c->progress = 0;
 432                 c->title = copystr(&c->title, u);
 433                 g_free(u);
 434                 update(c);
 435         }
 436 }
 437
 438 void
 439 navigate(Client *c, const Arg *arg) {
 440         int steps = *(int *)arg;
 441         webkit_web_view_go_back_or_forward(c->view, steps);
 442 }
 443
 444 Client *
 445 newclient(void) {
 446         Client *c;
 447         WebKitWebSettings *settings;
 448         WebKitWebFrame *frame;
 449         GdkGeometry hints = { 1, 1 };
 450         char *uri, *ua;
 451
 452         if(!(c = calloc(1, sizeof(Client))))
 453                 die("Cannot malloc!\n");
 454         /* Window */
 455         if(embed) {
 456                 c->win = gtk_plug_new(embed);
 457         }
 458         else {
 459                 c->win = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 460                 /* TA:  20091214:  Despite what the GNOME docs say, the ICCCM
 461                  * is always correct, so we should still call this function.
 462                  * But when doing so, we *must* differentiate between a
 463                  * WM_CLASS and a resource on the window.  By convention, the
 464                  * window class (WM_CLASS) is capped, while the resource is in
 465                  * lowercase.   Both these values come as a pair.
 466                  */
 467                 gtk_window_set_wmclass(GTK_WINDOW(c->win), "surf", "Surf");
 468
 469                 /* TA:  20091214:  And set the role here as well -- so that
 470                  * sessions can pick this up.
 471                  */
 472                 gtk_window_set_role(GTK_WINDOW(c->win), "Surf");
 473         }
 474         gtk_window_set_default_size(GTK_WINDOW(c->win), 800, 600);
 475         g_signal_connect(G_OBJECT(c->win), "destroy", G_CALLBACK(destroywin), c);
 476         g_signal_connect(G_OBJECT(c->win), "key-press-event", G_CALLBACK(keypress), c);
 477         g_signal_connect(G_OBJECT(c->win), "size-allocate", G_CALLBACK(resize), c);
 478
 479         /* VBox */
 480         c->vbox = gtk_vbox_new(FALSE, 0);
 481
 482         /* Scrolled Window */
 483         c->scroll = gtk_scrolled_window_new(NULL, NULL);
 484         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(c->scroll),
 485                         GTK_POLICY_NEVER, GTK_POLICY_NEVER);
 486
 487         /* Webview */
 488         c->view = WEBKIT_WEB_VIEW(webkit_web_view_new());
 489         g_signal_connect(G_OBJECT(c->view), "title-changed", G_CALLBACK(titlechange), c);
 490         g_signal_connect(G_OBJECT(c->view), "hovering-over-link", G_CALLBACK(linkhover), c);
 491         g_signal_connect(G_OBJECT(c->view), "create-web-view", G_CALLBACK(createwindow), c);
 492         g_signal_connect(G_OBJECT(c->view), "new-window-policy-decision-requested", G_CALLBACK(decidewindow), c);
 493         g_signal_connect(G_OBJECT(c->view), "mime-type-policy-decision-requested", G_CALLBACK(decidedownload), c);
 494         g_signal_connect(G_OBJECT(c->view), "window-object-cleared", G_CALLBACK(windowobjectcleared), c);
 495         g_signal_connect(G_OBJECT(c->view), "notify::load-status", G_CALLBACK(loadstatuschange), c);
 496         g_signal_connect(G_OBJECT(c->view), "notify::progress", G_CALLBACK(progresschange), c);
 497         g_signal_connect(G_OBJECT(c->view), "download-requested", G_CALLBACK(initdownload), c);
 498
 499         /* Indicator */
 500         c->indicator = gtk_drawing_area_new();
 501         gtk_widget_set_size_request(c->indicator, 0, 2);
 502         g_signal_connect (G_OBJECT (c->indicator), "expose_event",
 503                         G_CALLBACK (exposeindicator), c);
 504
 505         /* Arranging */
 506         gtk_container_add(GTK_CONTAINER(c->scroll), GTK_WIDGET(c->view));
 507         gtk_container_add(GTK_CONTAINER(c->win), c->vbox);
 508         gtk_container_add(GTK_CONTAINER(c->vbox), c->scroll);
 509         gtk_container_add(GTK_CONTAINER(c->vbox), c->indicator);
 510
 511         /* Setup */
 512         gtk_box_set_child_packing(GTK_BOX(c->vbox), c->indicator, FALSE, FALSE, 0, GTK_PACK_START);
 513         gtk_box_set_child_packing(GTK_BOX(c->vbox), c->scroll, TRUE, TRUE, 0, GTK_PACK_START);
 514         gtk_widget_grab_focus(GTK_WIDGET(c->view));
 515         gtk_widget_show(c->vbox);
 516         gtk_widget_show(c->indicator);
 517         gtk_widget_show(c->scroll);
 518         gtk_widget_show(GTK_WIDGET(c->view));
 519         gtk_widget_show(c->win);
 520         gtk_window_set_geometry_hints(GTK_WINDOW(c->win), NULL, &hints, GDK_HINT_MIN_SIZE);
 521         gdk_window_set_events(GTK_WIDGET(c->win)->window, GDK_ALL_EVENTS_MASK);
 522         gdk_window_add_filter(GTK_WIDGET(c->win)->window, processx, c);
 523         webkit_web_view_set_full_content_zoom(c->view, TRUE);
 524         frame = webkit_web_view_get_main_frame(c->view);
 525         runscript(frame, webkit_web_frame_get_global_context(frame));
 526         settings = webkit_web_view_get_settings(c->view);
 527         if(!(ua = getenv("SURF_USERAGENT")))
 528                 ua = useragent;
 529         g_object_set(G_OBJECT(settings), "user-agent", ua, NULL);
 530         uri = g_strconcat("file://", stylefile, NULL);
 531         g_object_set(G_OBJECT(settings), "user-stylesheet-uri", uri, NULL);
 532         g_object_set(G_OBJECT(settings), "auto-load-images", loadimage, NULL);
 533         g_object_set(G_OBJECT(settings), "enable-plugins", plugin, NULL);
 534         g_object_set(G_OBJECT(settings), "enable-scripts", script, NULL);
 535         g_object_set(G_OBJECT(settings), "enable-spatial-navigation", SPATIAL_BROWSING, NULL);
 536
 537         g_free(uri);
 538
 539         setatom(c, AtomFind, "");
 540         setatom(c, AtomUri, "about:blank");
 541         if(HIDE_BACKGROUND)
 542                 webkit_web_view_set_transparent(c->view, TRUE);
 543
 544         c->title = NULL;
 545         c->next = clients;
 546         clients = c;
 547         if(showxid) {
 548                 gdk_display_sync(gtk_widget_get_display(c->win));
 549                 printf("%u\n", (guint)GDK_WINDOW_XID(GTK_WIDGET(c->win)->window));
 550                 fflush(NULL);
 551                 if (fclose(stdout) != 0) {
 552                         die("Error closing stdout");
 553                 }
 554         }
 555         return c;
 556 }
 557
 558 void
 559 newrequest(SoupSession *s, SoupMessage *msg, gpointer v) {
 560         SoupMessageHeaders *h = msg->request_headers;
 561         SoupURI *uri;
 562         const char *c;
 563
 564         soup_message_headers_remove(h, "Cookie");
 565         uri = soup_message_get_uri(msg);
 566         if((c = getcookies(uri)))
 567                 soup_message_headers_append(h, "Cookie", c);
 568         g_signal_connect_after(G_OBJECT(msg), "got-headers", G_CALLBACK(gotheaders), NULL);
 569 }
 570
 571 void
 572 newwindow(Client *c, const Arg *arg) {
 573         guint i = 0;
 574         const char *cmd[10], *uri;
 575         const Arg a = { .v = (void *)cmd };
 576         char tmp[64];
 577
 578         cmd[i++] = progname;
 579         if(embed) {
 580                 cmd[i++] = "-e";
 581                 snprintf(tmp, LENGTH(tmp), "%u\n", (int)embed);
 582                 cmd[i++] = tmp;
 583         }
 584         if(!script)
 585                 cmd[i++] = "-s";
 586         if(!plugin)
 587                 cmd[i++] = "-p";
 588         if(!loadimage)
 589                 cmd[i++] = "-i";
 590         if(showxid)
 591                 cmd[i++] = "-x";
 592         cmd[i++] = "--";
 593         uri = arg->v ? (char *)arg->v : c->linkhover;
 594         if(uri)
 595                 cmd[i++] = uri;
 596         cmd[i++] = NULL;
 597         spawn(NULL, &a);
 598 }
 599
 600 void
 601 pasteuri(GtkClipboard *clipboard, const char *text, gpointer d) {
 602         Arg arg = {.v = text };
 603         if(text != NULL)
 604                 loaduri((Client *) d, &arg);
 605 }
 606
 607 void
 608 print(Client *c, const Arg *arg) {
 609         webkit_web_frame_print(webkit_web_view_get_main_frame(c->view));
 610 }
 611
 612 GdkFilterReturn
 613 processx(GdkXEvent *e, GdkEvent *event, gpointer d) {
 614         Client *c = (Client *)d;
 615         XPropertyEvent *ev;
 616         Arg arg;
 617
 618         if(((XEvent *)e)->type == PropertyNotify) {
 619                 ev = &((XEvent *)e)->xproperty;
 620                 if(ev->state == PropertyNewValue) {
 621                         if(ev->atom == atoms[AtomFind]) {
 622                                 arg.b = TRUE;
 623                                 find(c, &arg);
 624                                 return GDK_FILTER_REMOVE;
 625                         }
 626                         else if(ev->atom == atoms[AtomGo]) {
 627                                 arg.v = getatom(c, AtomGo);
 628                                 loaduri(c, &arg);
 629                                 return GDK_FILTER_REMOVE;
 630                         }
 631                 }
 632         }
 633         return GDK_FILTER_CONTINUE;
 634 }
 635
 636 void
 637 progresschange(WebKitWebView *view, GParamSpec *pspec, Client *c) {
 638         c->progress = webkit_web_view_get_progress(c->view) * 100;
 639         update(c);
 640 }
 641
 642 void
 643 reload(Client *c, const Arg *arg) {
 644         gboolean nocache = *(gboolean *)arg;
 645         if(nocache)
 646                  webkit_web_view_reload_bypass_cache(c->view);
 647         else
 648                  webkit_web_view_reload(c->view);
 649 }
 650
 651 void
 652 resize(GtkWidget *w, GtkAllocation *a, Client *c) {
 653         double zoom;
 654
 655         if(c->zoomed)
 656                 return;
 657         zoom = webkit_web_view_get_zoom_level(c->view);
 658         if(a->width * a->height < 300 * 400 && zoom != 0.2)
 659                 webkit_web_view_set_zoom_level(c->view, 0.2);
 660         else if(zoom != 1.0)
 661                 webkit_web_view_set_zoom_level(c->view, 1.0);
 662 }
 663
 664 void
 665 scroll(Client *c, const Arg *arg) {
 666         gdouble v;
 667         GtkAdjustment *a;
 668
 669         a = gtk_scrolled_window_get_vadjustment(GTK_SCROLLED_WINDOW(c->scroll));
 670         v = gtk_adjustment_get_value(a);
 671         v += gtk_adjustment_get_step_increment(a) * arg->i;
 672         v = MAX(v, 0.0);
 673         v = MIN(v, gtk_adjustment_get_upper(a) - gtk_adjustment_get_page_size(a));
 674         gtk_adjustment_set_value(a, v);
 675 }
 676
 677 void
 678 setcookie(SoupCookie *c) {
 679         int lock;
 680
 681         lock = open(cookiefile, 0);
 682         flock(lock, LOCK_EX);
 683         SoupDate *e;
 684         SoupCookieJar *j = soup_cookie_jar_text_new(cookiefile, FALSE);
 685         c = soup_cookie_copy(c);
 686         if(c->expires == NULL && sessiontime) {
 687                 e = soup_date_new_from_time_t(time(NULL) + sessiontime);
 688                 soup_cookie_set_expires(c, e);
 689         }
 690         soup_cookie_jar_add_cookie(j, c);
 691         g_object_unref(j);
 692         flock(lock, LOCK_UN);
 693         close(lock);
 694 }
 695
 696 void
 697 setatom(Client *c, int a, const char *v) {
 698         XSync(dpy, False);
 699         XChangeProperty(dpy, GDK_WINDOW_XID(GTK_WIDGET(c->win)->window), atoms[a],
 700                         XA_STRING, 8, PropModeReplace, (unsigned char *)v,
 701                         strlen(v) + 1);
 702 }
 703
 704 void
 705 setup(void) {
 706         char *proxy;
 707         char *new_proxy;
 708         SoupURI *puri;
 709         SoupSession *s;
 710
 711         /* clean up any zombies immediately */
 712         sigchld(0);
 713         gtk_init(NULL, NULL);
 714         if (!g_thread_supported())
 715                 g_thread_init(NULL);
 716
 717         dpy = GDK_DISPLAY();
 718         s = webkit_get_default_session();
 719
 720         /* atoms */
 721         atoms[AtomFind] = XInternAtom(dpy, "_SURF_FIND", False);
 722         atoms[AtomGo] = XInternAtom(dpy, "_SURF_GO", False);
 723         atoms[AtomUri] = XInternAtom(dpy, "_SURF_URI", False);
 724
 725         /* dirs and files */
 726         cookiefile = buildpath(cookiefile);
 727         scriptfile = buildpath(scriptfile);
 728         stylefile = buildpath(stylefile);
 729
 730         /* request handler */
 731         s = webkit_get_default_session();
 732         soup_session_remove_feature_by_type(s, soup_cookie_get_type());
 733         soup_session_remove_feature_by_type(s, soup_cookie_jar_get_type());
 734         g_signal_connect_after(G_OBJECT(s), "request-started", G_CALLBACK(newrequest), NULL);
 735
 736         /* ssl */
 737         g_object_set(G_OBJECT(s), "ssl-ca-file", cafile, NULL);
 738         g_object_set(G_OBJECT(s), "ssl-strict", strictssl, NULL);
 739
 740         /* proxy */
 741         if((proxy = getenv("http_proxy")) && strcmp(proxy, "")) {
 742                 new_proxy = g_strrstr(proxy, "http://") ? g_strdup(proxy) :
 743                         g_strdup_printf("http://%s", proxy);
 744                 puri = soup_uri_new(new_proxy);
 745                 g_object_set(G_OBJECT(s), "proxy-uri", puri, NULL);
 746                 soup_uri_free(puri);
 747                 g_free(new_proxy);
 748         }
 749 }
 750
 751 void
 752 sigchld(int unused) {
 753         if(signal(SIGCHLD, sigchld) == SIG_ERR)
 754                 die("Can't install SIGCHLD handler");
 755         while(0 < waitpid(-1, NULL, WNOHANG));
 756 }
 757
 758 void
 759 source(Client *c, const Arg *arg) {
 760         Arg a = { .b = FALSE };
 761         gboolean s;
 762
 763         s = webkit_web_view_get_view_source_mode(c->view);
 764         webkit_web_view_set_view_source_mode(c->view, !s);
 765         reload(c, &a);
 766 }
 767
 768 void
 769 spawn(Client *c, const Arg *arg) {
 770         if(fork() == 0) {
 771                 if(dpy)
 772                         close(ConnectionNumber(dpy));
 773                 setsid();
 774                 execvp(((char **)arg->v)[0], (char **)arg->v);
 775                 fprintf(stderr, "surf: execvp %s", ((char **)arg->v)[0]);
 776                 perror(" failed");
 777                 exit(0);
 778         }
 779 }
 780
 781 void
 782 eval(Client *c, const Arg *arg) {
 783         WebKitWebFrame *frame = webkit_web_view_get_main_frame(c->view);
 784         evalscript(frame, webkit_web_frame_get_global_context(frame), ((char **)arg->v)[0], "");
 785 }
 786
 787 void
 788 stop(Client *c, const Arg *arg) {
 789         webkit_web_view_stop_loading(c->view);
 790 }
 791
 792 void
 793 titlechange(WebKitWebView *v, WebKitWebFrame *f, const char *t, Client *c) {
 794         c->title = copystr(&c->title, t);
 795         update(c);
 796 }
 797
 798 void
 799 update(Client *c) {
 800         char *t;
 801
 802         if(c->linkhover)
 803                 t = g_strdup(c->linkhover);
 804         else if(c->progress != 100)
 805                 t = g_strdup_printf("[%i%%] %s", c->progress, c->title);
 806         else
 807                 t = g_strdup(c->title);
 808         drawindicator(c);
 809         gtk_window_set_title(GTK_WINDOW(c->win), t);
 810         g_free(t);
 811 }
 812
 813 void
 814 updatewinid(Client *c) {
 815         snprintf(winid, LENGTH(winid), "%u",
 816                         (int)GDK_WINDOW_XID(GTK_WIDGET(c->win)->window));
 817 }
 818
 819 void
 820 usage(void) {
 821         fputs("surf - simple browser\n", stderr);
 822         die("usage: surf [-e xid] [-i] [-p] [-s] [-v] [-x] [uri]\n");
 823 }
 824
 825 void
 826 windowobjectcleared(GtkWidget *w, WebKitWebFrame *frame, JSContextRef js, JSObjectRef win, Client *c) {
 827         runscript(frame, js);
 828 }
 829
 830 void
 831 zoom(Client *c, const Arg *arg) {
 832         c->zoomed = TRUE;
 833         if(arg->i < 0)          /* zoom out */
 834                 webkit_web_view_zoom_out(c->view);
 835         else if(arg->i > 0)     /* zoom in */
 836                 webkit_web_view_zoom_in(c->view);
 837         else {                  /* reset */
 838                 c->zoomed = FALSE;
 839                 webkit_web_view_set_zoom_level(c->view, 1.0);
 840         }
 841 }
 842
 843 int
 844 main(int argc, char *argv[]) {
 845         int i;
 846         Arg arg;
 847
 848         progname = argv[0];
 849         /* command line args */
 850         for(i = 1, arg.v = NULL; i < argc && argv[i][0] == '-' &&
 851                         argv[i][1] != '\0' && argv[i][2] == '\0'; i++) {
 852                 if(!strcmp(argv[i], "--")) {
 853                         i++;
 854                         break;
 855                 }
 856                 switch(argv[i][1]) {
 857                 case 'e':
 858                         if(++i < argc)
 859                                 embed = atoi(argv[i]);
 860                         else
 861                                 usage();
 862                         break;
 863                 case 'i':
 864                         loadimage = 0;
 865                         break;
 866                 case 'p':
 867                         plugin = 0;
 868                         break;
 869                 case 's':
 870                         script = 0;
 871                         break;
 872                 case 'x':
 873                         showxid = TRUE;
 874                         break;
 875                 case 'v':
 876                         die("surf-"VERSION", ©2009-2012 surf engineers, see LICENSE for details\n");
 877                 default:
 878                         usage();
 879                 }
 880         }
 881         if(i < argc)
 882                 arg.v = argv[i];
 883         setup();
 884         newclient();
 885         if(arg.v)
 886                 loaduri(clients, &arg);
 887         gtk_main();
 888         cleanup();
 889         return EXIT_SUCCESS;
 890 }