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 #define CLEANMASK(mask)         (mask & (ShiftMask|ControlMask|Mod1Mask|Mod2Mask|Mod3Mask|Mod4Mask|Mod5Mask))
  25
  26 enum { AtomFind, AtomGo, AtomUri, AtomLast };
  27
  28 typedef union Arg Arg;
  29 union Arg {
  30         gboolean b;
  31         gint i;
  32         const void *v;
  33 };
  34
  35 typedef struct Client {
  36         GtkWidget *win, *scroll, *vbox, *indicator;
  37         WebKitWebView *view;
  38         char *title, *linkhover;
  39         const char *uri, *needle;
  40         gint progress;
  41         gboolean sslfailed;
  42         struct Client *next;
  43         gboolean zoomed;
  44 } Client;
  45
  46 typedef struct {
  47         char *label;
  48         void (*func)(Client *c, const Arg *arg);
  49         const Arg arg;
  50 } Item;
  51
  52 typedef struct {
  53         guint mod;
  54         guint keyval;
  55         void (*func)(Client *c, const Arg *arg);
  56         const Arg arg;
  57 } Key;
  58
  59 static Display *dpy;
  60 static Atom atoms[AtomLast];
  61 static Client *clients = NULL;
  62 static GdkNativeWindow embed = 0;
  63 static gboolean showxid = FALSE;
  64 static char winid[64];
  65 static char *progname;
  66 static gboolean loadimage = 1, plugin = 1, script = 1;
  67
  68 static char *buildpath(const char *path);
  69 static void cleanup(void);
  70 static void clipboard(Client *c, const Arg *arg);
  71 static char *copystr(char **str, const char *src);
  72 static WebKitWebView *createwindow(WebKitWebView *v, WebKitWebFrame *f, Client *c);
  73 static gboolean decidedownload(WebKitWebView *v, WebKitWebFrame *f, WebKitNetworkRequest *r, gchar *m,  WebKitWebPolicyDecision *p, Client *c);
  74 static gboolean decidewindow(WebKitWebView *v, WebKitWebFrame *f, WebKitNetworkRequest *r, WebKitWebNavigationAction *n, WebKitWebPolicyDecision *p, Client *c);
  75 static void destroyclient(Client *c);
  76 static void destroywin(GtkWidget* w, Client *c);
  77 static void die(char *str);
  78 static void drawindicator(Client *c);
  79 static gboolean exposeindicator(GtkWidget *w, GdkEventExpose *e, Client *c);
  80 static void find(Client *c, const Arg *arg);
  81 static const char *getatom(Client *c, int a);
  82 static const char *getcookies(SoupURI *uri);
  83 static char *geturi(Client *c);
  84 void gotheaders(SoupMessage *msg, gpointer user_data);
  85 static gboolean initdownload(WebKitWebView *v, WebKitDownload *o, Client *c);
  86 static gboolean keypress(GtkWidget *w, GdkEventKey *ev, Client *c);
  87 static void linkhover(WebKitWebView *v, const char* t, const char* l, Client *c);
  88 static void loadstatuschange(WebKitWebView *view, GParamSpec *pspec, Client *c);
  89 static void loaduri(Client *c, const Arg *arg);
  90 static void navigate(Client *c, const Arg *arg);
  91 static Client *newclient(void);
  92 static void newwindow(Client *c, const Arg *arg);
  93 static void newrequest(SoupSession *s, SoupMessage *msg, gpointer v);
  94 static void pasteuri(GtkClipboard *clipboard, const char *text, gpointer d);
  95 static void print(Client *c, const Arg *arg);
  96 static GdkFilterReturn processx(GdkXEvent *xevent, GdkEvent *event, gpointer d);
  97 static void progresschange(WebKitWebView *view, GParamSpec *pspec, Client *c);
  98 static void reload(Client *c, const Arg *arg);
  99 static void scroll_h(Client *c, const Arg *arg);
 100 static void scroll_v(Client *c, const Arg *arg);
 101 static void scroll(GtkAdjustment *a, const Arg *arg);
 102 static void setatom(Client *c, int a, const char *v);
 103 static void setcookie(SoupCookie *c);
 104 static void setup(void);
 105 static void sigchld(int unused);
 106 static void source(Client *c, const Arg *arg);
 107 static void spawn(Client *c, const Arg *arg);
 108 static void eval(Client *c, const Arg *arg);
 109 static void stop(Client *c, const Arg *arg);
 110 static void titlechange(WebKitWebView *v, WebKitWebFrame* frame, const char* title, Client *c);
 111 static void update(Client *c);
 112 static void updatewinid(Client *c);
 113 static void usage(void);
 114 static void windowobjectcleared(GtkWidget *w, WebKitWebFrame *frame, JSContextRef js, JSObjectRef win, Client *c);
 115 static void zoom(Client *c, const Arg *arg);
 116
 117 /* configuration, allows nested code to access above variables */
 118 #include "config.h"
 119
 120 char *
 121 buildpath(const char *path) {
 122         char *apath, *p;
 123         FILE *f;
 124
 125         /* creating directory */
 126         if(path[0] == '/')
 127                 apath = g_strdup(path);
 128         else
 129                 apath = g_strconcat(g_get_home_dir(), "/", path, NULL);
 130         if((p = strrchr(apath, '/'))) {
 131                 *p = '\0';
 132                 g_mkdir_with_parents(apath, 0700);
 133                 g_chmod(apath, 0700); /* in case it existed */
 134                 *p = '/';
 135         }
 136         /* creating file (gives error when apath ends with "/") */
 137         if((f = fopen(apath, "a"))) {
 138                 g_chmod(apath, 0600); /* always */
 139                 fclose(f);
 140         }
 141         return apath;
 142 }
 143
 144 void
 145 cleanup(void) {
 146         while(clients)
 147                 destroyclient(clients);
 148         g_free(cookiefile);
 149         g_free(scriptfile);
 150         g_free(stylefile);
 151 }
 152
 153 void
 154 evalscript(JSContextRef js, char *script, char* scriptname) {
 155         JSStringRef jsscript, jsscriptname;
 156         JSValueRef exception = NULL;
 157
 158         jsscript = JSStringCreateWithUTF8CString(script);
 159         jsscriptname = JSStringCreateWithUTF8CString(scriptname);
 160         JSEvaluateScript(js, jsscript, JSContextGetGlobalObject(js), jsscriptname, 0, &exception);
 161         JSStringRelease(jsscript);
 162         JSStringRelease(jsscriptname);
 163 }
 164
 165 void
 166 runscript(WebKitWebFrame *frame) {
 167         char *script;
 168         GError *error;
 169
 170         if(g_file_get_contents(scriptfile, &script, NULL, &error)) {
 171                 evalscript(webkit_web_frame_get_global_context(frame), script, scriptfile);
 172         }
 173 }
 174
 175 void
 176 clipboard(Client *c, const Arg *arg) {
 177         gboolean paste = *(gboolean *)arg;
 178
 179         if(paste)
 180                 gtk_clipboard_request_text(gtk_clipboard_get(GDK_SELECTION_PRIMARY), pasteuri, c);
 181         else
 182                 gtk_clipboard_set_text(gtk_clipboard_get(GDK_SELECTION_PRIMARY), c->linkhover ? c->linkhover : geturi(c), -1);
 183 }
 184
 185 char *
 186 copystr(char **str, const char *src) {
 187         char *tmp;
 188         tmp = g_strdup(src);
 189
 190         if(str && *str) {
 191                 g_free(*str);
 192                 *str = tmp;
 193         }
 194         return tmp;
 195 }
 196
 197 WebKitWebView *
 198 createwindow(WebKitWebView  *v, WebKitWebFrame *f, Client *c) {
 199         Client *n = newclient();
 200         return n->view;
 201 }
 202
 203 gboolean
 204 decidedownload(WebKitWebView *v, WebKitWebFrame *f, WebKitNetworkRequest *r, gchar *m,  WebKitWebPolicyDecision *p, Client *c) {
 205         if(!webkit_web_view_can_show_mime_type(v, m)) {
 206                 webkit_web_policy_decision_download(p);
 207                 return TRUE;
 208         }
 209         return FALSE;
 210 }
 211
 212 gboolean
 213 decidewindow(WebKitWebView *view, WebKitWebFrame *f, WebKitNetworkRequest *r, WebKitWebNavigationAction *n, WebKitWebPolicyDecision *p, Client *c) {
 214         Arg arg;
 215
 216         if(webkit_web_navigation_action_get_reason(n) == WEBKIT_WEB_NAVIGATION_REASON_LINK_CLICKED) {
 217                 webkit_web_policy_decision_ignore(p);
 218                 arg.v = (void *)webkit_network_request_get_uri(r);
 219                 newwindow(NULL, &arg);
 220                 return TRUE;
 221         }
 222         return FALSE;
 223 }
 224
 225 void
 226 destroyclient(Client *c) {
 227         Client *p;
 228
 229         webkit_web_view_stop_loading(c->view);
 230         gtk_widget_destroy(c->indicator);
 231         gtk_widget_destroy(GTK_WIDGET(c->view));
 232         gtk_widget_destroy(c->scroll);
 233         gtk_widget_destroy(c->vbox);
 234         gtk_widget_destroy(c->win);
 235
 236         for(p = clients; p && p->next != c; p = p->next);
 237         if(p)
 238                 p->next = c->next;
 239         else
 240                 clients = c->next;
 241         free(c);
 242         if(clients == NULL)
 243                 gtk_main_quit();
 244 }
 245
 246 void
 247 destroywin(GtkWidget* w, Client *c) {
 248         destroyclient(c);
 249 }
 250
 251 void
 252 die(char *str) {
 253         fputs(str, stderr);
 254         exit(EXIT_FAILURE);
 255 }
 256
 257 void
 258 drawindicator(Client *c) {
 259         gint width;
 260         const char *uri;
 261         GtkWidget *w;
 262         GdkGC *gc;
 263         GdkColor fg;
 264
 265         uri = geturi(c);
 266         w = c->indicator;
 267         width = c->progress * w->allocation.width / 100;
 268         gc = gdk_gc_new(w->window);
 269         if(strstr(uri, "https://") == uri)
 270                 gdk_color_parse(c->sslfailed ?
 271                                 progress_untrust : progress_trust, &fg);
 272         else
 273                 gdk_color_parse(progress, &fg);
 274         gdk_gc_set_rgb_fg_color(gc, &fg);
 275         gdk_draw_rectangle(w->window,
 276                         w->style->bg_gc[GTK_WIDGET_STATE(w)],
 277                         TRUE, 0, 0, w->allocation.width, w->allocation.height);
 278         gdk_draw_rectangle(w->window, gc, TRUE, 0, 0, width,
 279                         w->allocation.height);
 280         g_object_unref(gc);
 281 }
 282
 283 gboolean
 284 exposeindicator(GtkWidget *w, GdkEventExpose *e, Client *c) {
 285         drawindicator(c);
 286         return TRUE;
 287 }
 288
 289 void
 290 find(Client *c, const Arg *arg) {
 291         const char *s;
 292
 293         s = getatom(c, AtomFind);
 294         gboolean forward = *(gboolean *)arg;
 295         webkit_web_view_search_text(c->view, s, FALSE, forward, TRUE);
 296 }
 297
 298 const char *
 299 getcookies(SoupURI *uri) {
 300         const char *c;
 301         SoupCookieJar *j = soup_cookie_jar_text_new(cookiefile, TRUE);
 302         c = soup_cookie_jar_get_cookies(j, uri, TRUE);
 303         g_object_unref(j);
 304         return c;
 305 }
 306
 307 const char *
 308 getatom(Client *c, int a) {
 309         static char buf[BUFSIZ];
 310         Atom adummy;
 311         int idummy;
 312         unsigned long ldummy;
 313         unsigned char *p = NULL;
 314
 315         XGetWindowProperty(dpy, GDK_WINDOW_XID(GTK_WIDGET(c->win)->window),
 316                         atoms[a], 0L, BUFSIZ, False, XA_STRING,
 317                         &adummy, &idummy, &ldummy, &ldummy, &p);
 318         if(p)
 319                 strncpy(buf, (char *)p, LENGTH(buf)-1);
 320         else
 321                 buf[0] = '\0';
 322         XFree(p);
 323         return buf;
 324 }
 325
 326 char *
 327 geturi(Client *c) {
 328         char *uri;
 329
 330         if(!(uri = (char *)webkit_web_view_get_uri(c->view)))
 331                 uri = "about:blank";
 332         return uri;
 333 }
 334
 335 void
 336 gotheaders(SoupMessage *msg, gpointer v) {
 337         GSList *l, *p;
 338
 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                                 && CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
 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
 478         /* VBox */
 479         c->vbox = gtk_vbox_new(FALSE, 0);
 480
 481         /* Scrolled Window */
 482         c->scroll = gtk_scrolled_window_new(NULL, NULL);
 483         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(c->scroll),
 484                         GTK_POLICY_NEVER, GTK_POLICY_NEVER);
 485
 486         /* Webview */
 487         c->view = WEBKIT_WEB_VIEW(webkit_web_view_new());
 488         g_signal_connect(G_OBJECT(c->view), "title-changed", G_CALLBACK(titlechange), c);
 489         g_signal_connect(G_OBJECT(c->view), "hovering-over-link", G_CALLBACK(linkhover), c);
 490         g_signal_connect(G_OBJECT(c->view), "create-web-view", G_CALLBACK(createwindow), c);
 491         g_signal_connect(G_OBJECT(c->view), "new-window-policy-decision-requested", G_CALLBACK(decidewindow), c);
 492         g_signal_connect(G_OBJECT(c->view), "mime-type-policy-decision-requested", G_CALLBACK(decidedownload), c);
 493         g_signal_connect(G_OBJECT(c->view), "window-object-cleared", G_CALLBACK(windowobjectcleared), c);
 494         g_signal_connect(G_OBJECT(c->view), "notify::load-status", G_CALLBACK(loadstatuschange), c);
 495         g_signal_connect(G_OBJECT(c->view), "notify::progress", G_CALLBACK(progresschange), c);
 496         g_signal_connect(G_OBJECT(c->view), "download-requested", G_CALLBACK(initdownload), c);
 497
 498         /* Indicator */
 499         c->indicator = gtk_drawing_area_new();
 500         gtk_widget_set_size_request(c->indicator, 0, 2);
 501         g_signal_connect (G_OBJECT (c->indicator), "expose_event",
 502                         G_CALLBACK (exposeindicator), c);
 503
 504         /* Arranging */
 505         gtk_container_add(GTK_CONTAINER(c->scroll), GTK_WIDGET(c->view));
 506         gtk_container_add(GTK_CONTAINER(c->win), c->vbox);
 507         gtk_container_add(GTK_CONTAINER(c->vbox), c->scroll);
 508         gtk_container_add(GTK_CONTAINER(c->vbox), c->indicator);
 509
 510         /* Setup */
 511         gtk_box_set_child_packing(GTK_BOX(c->vbox), c->indicator, FALSE, FALSE, 0, GTK_PACK_START);
 512         gtk_box_set_child_packing(GTK_BOX(c->vbox), c->scroll, TRUE, TRUE, 0, GTK_PACK_START);
 513         gtk_widget_grab_focus(GTK_WIDGET(c->view));
 514         gtk_widget_show(c->vbox);
 515         gtk_widget_show(c->indicator);
 516         gtk_widget_show(c->scroll);
 517         gtk_widget_show(GTK_WIDGET(c->view));
 518         gtk_widget_show(c->win);
 519         gtk_window_set_geometry_hints(GTK_WINDOW(c->win), NULL, &hints, GDK_HINT_MIN_SIZE);
 520         gdk_window_set_events(GTK_WIDGET(c->win)->window, GDK_ALL_EVENTS_MASK);
 521         gdk_window_add_filter(GTK_WIDGET(c->win)->window, processx, c);
 522         webkit_web_view_set_full_content_zoom(c->view, TRUE);
 523         frame = webkit_web_view_get_main_frame(c->view);
 524         runscript(frame);
 525         settings = webkit_web_view_get_settings(c->view);
 526         if(!(ua = getenv("SURF_USERAGENT")))
 527                 ua = useragent;
 528         g_object_set(G_OBJECT(settings), "user-agent", ua, NULL);
 529         uri = g_strconcat("file://", stylefile, NULL);
 530         g_object_set(G_OBJECT(settings), "user-stylesheet-uri", uri, NULL);
 531         g_object_set(G_OBJECT(settings), "auto-load-images", loadimage, NULL);
 532         g_object_set(G_OBJECT(settings), "enable-plugins", plugin, NULL);
 533         g_object_set(G_OBJECT(settings), "enable-scripts", script, NULL);
 534         g_object_set(G_OBJECT(settings), "enable-spatial-navigation", SPATIAL_BROWSING, NULL);
 535
 536         g_free(uri);
 537
 538         setatom(c, AtomFind, "");
 539         setatom(c, AtomUri, "about:blank");
 540         if(HIDE_BACKGROUND)
 541                 webkit_web_view_set_transparent(c->view, TRUE);
 542
 543         c->title = NULL;
 544         c->next = clients;
 545         clients = c;
 546         if(showxid) {
 547                 gdk_display_sync(gtk_widget_get_display(c->win));
 548                 printf("%u\n", (guint)GDK_WINDOW_XID(GTK_WIDGET(c->win)->window));
 549                 fflush(NULL);
 550                 if (fclose(stdout) != 0) {
 551                         die("Error closing stdout");
 552                 }
 553         }
 554         return c;
 555 }
 556
 557 void
 558 newrequest(SoupSession *s, SoupMessage *msg, gpointer v) {
 559         SoupMessageHeaders *h = msg->request_headers;
 560         SoupURI *uri;
 561         const char *c;
 562
 563         soup_message_headers_remove(h, "Cookie");
 564         uri = soup_message_get_uri(msg);
 565         if((c = getcookies(uri)))
 566                 soup_message_headers_append(h, "Cookie", c);
 567         g_signal_connect_after(G_OBJECT(msg), "got-headers", G_CALLBACK(gotheaders), NULL);
 568 }
 569
 570 void
 571 newwindow(Client *c, const Arg *arg) {
 572         guint i = 0;
 573         const char *cmd[10], *uri;
 574         const Arg a = { .v = (void *)cmd };
 575         char tmp[64];
 576
 577         cmd[i++] = progname;
 578         if(embed) {
 579                 cmd[i++] = "-e";
 580                 snprintf(tmp, LENGTH(tmp), "%u\n", (int)embed);
 581                 cmd[i++] = tmp;
 582         }
 583         if(!script)
 584                 cmd[i++] = "-s";
 585         if(!plugin)
 586                 cmd[i++] = "-p";
 587         if(!loadimage)
 588                 cmd[i++] = "-i";
 589         if(showxid)
 590                 cmd[i++] = "-x";
 591         cmd[i++] = "--";
 592         uri = arg->v ? (char *)arg->v : c->linkhover;
 593         if(uri)
 594                 cmd[i++] = uri;
 595         cmd[i++] = NULL;
 596         spawn(NULL, &a);
 597 }
 598
 599 void
 600 pasteuri(GtkClipboard *clipboard, const char *text, gpointer d) {
 601         Arg arg = {.v = text };
 602         if(text != NULL)
 603                 loaduri((Client *) d, &arg);
 604 }
 605
 606 void
 607 print(Client *c, const Arg *arg) {
 608         webkit_web_frame_print(webkit_web_view_get_main_frame(c->view));
 609 }
 610
 611 GdkFilterReturn
 612 processx(GdkXEvent *e, GdkEvent *event, gpointer d) {
 613         Client *c = (Client *)d;
 614         XPropertyEvent *ev;
 615         Arg arg;
 616
 617         if(((XEvent *)e)->type == PropertyNotify) {
 618                 ev = &((XEvent *)e)->xproperty;
 619                 if(ev->state == PropertyNewValue) {
 620                         if(ev->atom == atoms[AtomFind]) {
 621                                 arg.b = TRUE;
 622                                 find(c, &arg);
 623                                 return GDK_FILTER_REMOVE;
 624                         }
 625                         else if(ev->atom == atoms[AtomGo]) {
 626                                 arg.v = getatom(c, AtomGo);
 627                                 loaduri(c, &arg);
 628                                 return GDK_FILTER_REMOVE;
 629                         }
 630                 }
 631         }
 632         return GDK_FILTER_CONTINUE;
 633 }
 634
 635 void
 636 progresschange(WebKitWebView *view, GParamSpec *pspec, Client *c) {
 637         c->progress = webkit_web_view_get_progress(c->view) * 100;
 638         update(c);
 639 }
 640
 641 void
 642 reload(Client *c, const Arg *arg) {
 643         gboolean nocache = *(gboolean *)arg;
 644         if(nocache)
 645                  webkit_web_view_reload_bypass_cache(c->view);
 646         else
 647                  webkit_web_view_reload(c->view);
 648 }
 649
 650 void
 651 scroll_h(Client *c, const Arg *arg) {
 652         scroll(gtk_scrolled_window_get_hadjustment(
 653                                 GTK_SCROLLED_WINDOW(c->scroll)), arg);
 654 }
 655
 656 void
 657 scroll_v(Client *c, const Arg *arg) {
 658         scroll(gtk_scrolled_window_get_vadjustment(
 659                                 GTK_SCROLLED_WINDOW(c->scroll)), arg);
 660 }
 661
 662 void
 663 scroll(GtkAdjustment *a, const Arg *arg) {
 664         gdouble v;
 665
 666         v = gtk_adjustment_get_value(a);
 667         switch (arg->i){
 668         case +10000:
 669         case -10000:
 670                 v += gtk_adjustment_get_page_increment(a) *
 671                         (arg->i / 10000);
 672                 break;
 673         case +20000:
 674         case -20000:
 675         default:
 676                 v += gtk_adjustment_get_step_increment(a) * arg->i;
 677         }
 678
 679         v = MAX(v, 0.0);
 680         v = MIN(v, gtk_adjustment_get_upper(a) -
 681                         gtk_adjustment_get_page_size(a));
 682         gtk_adjustment_set_value(a, v);
 683 }
 684
 685 void
 686 setcookie(SoupCookie *c) {
 687         int lock;
 688
 689         lock = open(cookiefile, 0);
 690         flock(lock, LOCK_EX);
 691         SoupDate *e;
 692         SoupCookieJar *j = soup_cookie_jar_text_new(cookiefile, FALSE);
 693         c = soup_cookie_copy(c);
 694         if(c->expires == NULL && sessiontime) {
 695                 e = soup_date_new_from_time_t(time(NULL) + sessiontime);
 696                 soup_cookie_set_expires(c, e);
 697         }
 698         soup_cookie_jar_add_cookie(j, c);
 699         g_object_unref(j);
 700         flock(lock, LOCK_UN);
 701         close(lock);
 702 }
 703
 704 void
 705 setatom(Client *c, int a, const char *v) {
 706         XSync(dpy, False);
 707         XChangeProperty(dpy, GDK_WINDOW_XID(GTK_WIDGET(c->win)->window), atoms[a],
 708                         XA_STRING, 8, PropModeReplace, (unsigned char *)v,
 709                         strlen(v) + 1);
 710 }
 711
 712 void
 713 setup(void) {
 714         char *proxy;
 715         char *new_proxy;
 716         SoupURI *puri;
 717         SoupSession *s;
 718
 719         /* clean up any zombies immediately */
 720         sigchld(0);
 721         gtk_init(NULL, NULL);
 722         if (!g_thread_supported())
 723                 g_thread_init(NULL);
 724
 725         dpy = GDK_DISPLAY();
 726         s = webkit_get_default_session();
 727
 728         /* atoms */
 729         atoms[AtomFind] = XInternAtom(dpy, "_SURF_FIND", False);
 730         atoms[AtomGo] = XInternAtom(dpy, "_SURF_GO", False);
 731         atoms[AtomUri] = XInternAtom(dpy, "_SURF_URI", False);
 732
 733         /* dirs and files */
 734         cookiefile = buildpath(cookiefile);
 735         scriptfile = buildpath(scriptfile);
 736         stylefile = buildpath(stylefile);
 737
 738         /* request handler */
 739         s = webkit_get_default_session();
 740         soup_session_remove_feature_by_type(s, soup_cookie_get_type());
 741         soup_session_remove_feature_by_type(s, soup_cookie_jar_get_type());
 742         g_signal_connect_after(G_OBJECT(s), "request-started", G_CALLBACK(newrequest), NULL);
 743
 744         /* ssl */
 745         g_object_set(G_OBJECT(s), "ssl-ca-file", cafile, NULL);
 746         g_object_set(G_OBJECT(s), "ssl-strict", strictssl, NULL);
 747
 748         /* proxy */
 749         if((proxy = getenv("http_proxy")) && strcmp(proxy, "")) {
 750                 new_proxy = g_strrstr(proxy, "http://") ? g_strdup(proxy) :
 751                         g_strdup_printf("http://%s", proxy);
 752                 puri = soup_uri_new(new_proxy);
 753                 g_object_set(G_OBJECT(s), "proxy-uri", puri, NULL);
 754                 soup_uri_free(puri);
 755                 g_free(new_proxy);
 756         }
 757 }
 758
 759 void
 760 sigchld(int unused) {
 761         if(signal(SIGCHLD, sigchld) == SIG_ERR)
 762                 die("Can't install SIGCHLD handler");
 763         while(0 < waitpid(-1, NULL, WNOHANG));
 764 }
 765
 766 void
 767 source(Client *c, const Arg *arg) {
 768         Arg a = { .b = FALSE };
 769         gboolean s;
 770
 771         s = webkit_web_view_get_view_source_mode(c->view);
 772         webkit_web_view_set_view_source_mode(c->view, !s);
 773         reload(c, &a);
 774 }
 775
 776 void
 777 spawn(Client *c, const Arg *arg) {
 778         if(fork() == 0) {
 779                 if(dpy)
 780                         close(ConnectionNumber(dpy));
 781                 setsid();
 782                 execvp(((char **)arg->v)[0], (char **)arg->v);
 783                 fprintf(stderr, "surf: execvp %s", ((char **)arg->v)[0]);
 784                 perror(" failed");
 785                 exit(0);
 786         }
 787 }
 788
 789 void
 790 eval(Client *c, const Arg *arg) {
 791         WebKitWebFrame *frame = webkit_web_view_get_main_frame(c->view);
 792         evalscript(webkit_web_frame_get_global_context(frame),
 793                         ((char **)arg->v)[0], "");
 794 }
 795
 796 void
 797 stop(Client *c, const Arg *arg) {
 798         webkit_web_view_stop_loading(c->view);
 799 }
 800
 801 void
 802 titlechange(WebKitWebView *v, WebKitWebFrame *f, const char *t, Client *c) {
 803         c->title = copystr(&c->title, t);
 804         update(c);
 805 }
 806
 807 void
 808 update(Client *c) {
 809         char *t;
 810
 811         if(c->linkhover)
 812                 t = g_strdup(c->linkhover);
 813         else if(c->progress != 100)
 814                 t = g_strdup_printf("[%i%%] %s", c->progress, c->title);
 815         else
 816                 t = g_strdup(c->title);
 817         drawindicator(c);
 818         gtk_window_set_title(GTK_WINDOW(c->win), t);
 819         g_free(t);
 820 }
 821
 822 void
 823 updatewinid(Client *c) {
 824         snprintf(winid, LENGTH(winid), "%u",
 825                         (int)GDK_WINDOW_XID(GTK_WIDGET(c->win)->window));
 826 }
 827
 828 void
 829 usage(void) {
 830         fputs("surf - simple browser\n", stderr);
 831         die("usage: surf [-e xid] [-i] [-p] [-s] [-v] [-x] [uri]\n");
 832 }
 833
 834 void
 835 windowobjectcleared(GtkWidget *w, WebKitWebFrame *frame, JSContextRef js, JSObjectRef win, Client *c) {
 836         runscript(frame);
 837 }
 838
 839 void
 840 zoom(Client *c, const Arg *arg) {
 841         c->zoomed = TRUE;
 842         if(arg->i < 0)          /* zoom out */
 843                 webkit_web_view_zoom_out(c->view);
 844         else if(arg->i > 0)     /* zoom in */
 845                 webkit_web_view_zoom_in(c->view);
 846         else {                  /* reset */
 847                 c->zoomed = FALSE;
 848                 webkit_web_view_set_zoom_level(c->view, 1.0);
 849         }
 850 }
 851
 852 int
 853 main(int argc, char *argv[]) {
 854         int i;
 855         Arg arg;
 856
 857         progname = argv[0];
 858         /* command line args */
 859         for(i = 1, arg.v = NULL; i < argc && argv[i][0] == '-' &&
 860                         argv[i][1] != '\0' && argv[i][2] == '\0'; i++) {
 861                 if(!strcmp(argv[i], "--")) {
 862                         i++;
 863                         break;
 864                 }
 865                 switch(argv[i][1]) {
 866                 case 'e':
 867                         if(++i < argc)
 868                                 embed = strtol(argv[i], NULL, 0);
 869                         else
 870                                 usage();
 871                         break;
 872                 case 'i':
 873                         loadimage = 0;
 874                         break;
 875                 case 'p':
 876                         plugin = 0;
 877                         break;
 878                 case 's':
 879                         script = 0;
 880                         break;
 881                 case 'x':
 882                         showxid = TRUE;
 883                         break;
 884                 case 'v':
 885                         die("surf-"VERSION", ©2009-2012 surf engineers, see LICENSE for details\n");
 886                 default:
 887                         usage();
 888                 }
 889         }
 890         if(i < argc)
 891                 arg.v = argv[i];
 892         setup();
 893         newclient();
 894         if(arg.v)
 895                 loaduri(clients, &arg);
 896         gtk_main();
 897         cleanup();
 898         return EXIT_SUCCESS;
 899 }