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 & ~(GDK_MOD2_MASK))
  25
  26 typedef union Arg Arg;
  27 union Arg {
  28         gboolean b;
  29         gint i;
  30         const void *v;
  31 };
  32
  33 typedef struct Client {
  34         GtkWidget *win, *scroll, *vbox, *indicator;
  35         WebKitWebView *view;
  36         char *title, *linkhover;
  37         const char *uri, *needle;
  38         gint progress;
  39         struct Client *next;
  40         gboolean zoomed;
  41 } Client;
  42
  43 typedef struct {
  44         char *label;
  45         void (*func)(Client *c, const Arg *arg);
  46         const Arg arg;
  47 } Item;
  48
  49 typedef struct {
  50         guint mod;
  51         guint keyval;
  52         void (*func)(Client *c, const Arg *arg);
  53         const Arg arg;
  54 } Key;
  55
  56 static Display *dpy;
  57 static Atom uriprop, findprop;
  58 static Client *clients = NULL;
  59 static GdkNativeWindow embed = 0;
  60 static gboolean showxid = FALSE;
  61 static int ignorexprop = 0;
  62 static char winid[64];
  63 static char *progname;
  64 static gboolean loadimage = 1, plugin = 1, script = 1;
  65
  66 static char *buildpath(const char *path);
  67 static void cleanup(void);
  68 static void clipboard(Client *c, const Arg *arg);
  69 static char *copystr(char **str, const char *src);
  70 static WebKitWebView *createwindow(WebKitWebView *v, WebKitWebFrame *f, Client *c);
  71 static gboolean decidedownload(WebKitWebView *v, WebKitWebFrame *f, WebKitNetworkRequest *r, gchar *m,  WebKitWebPolicyDecision *p, Client *c);
  72 static gboolean decidewindow(WebKitWebView *v, WebKitWebFrame *f, WebKitNetworkRequest *r, WebKitWebNavigationAction *n, WebKitWebPolicyDecision *p, Client *c);
  73 static void destroyclient(Client *c);
  74 static void destroywin(GtkWidget* w, Client *c);
  75 static void die(char *str);
  76 static void drawindicator(Client *c);
  77 static gboolean exposeindicator(GtkWidget *w, GdkEventExpose *e, Client *c);
  78 static void find(Client *c, const Arg *arg);
  79 static const char *getatom(Client *c, Atom a);
  80 static const char *getcookies(SoupURI *uri);
  81 static char *geturi(Client *c);
  82 void gotheaders(SoupMessage *msg, gpointer user_data);
  83 static gboolean keypress(GtkWidget *w, GdkEventKey *ev, Client *c);
  84 static void linkhover(WebKitWebView *v, const char* t, const char* l, Client *c);
  85 static void loadstatuschange(WebKitWebView *view, GParamSpec *pspec, Client *c);
  86 static void loaduri(Client *c, const Arg *arg);
  87 static void navigate(Client *c, const Arg *arg);
  88 static Client *newclient(void);
  89 static void newwindow(Client *c, const Arg *arg);
  90 static void newrequest(SoupSession *s, SoupMessage *msg, gpointer v);
  91 static void pasteuri(GtkClipboard *clipboard, const char *text, gpointer d);
  92 static void print(Client *c, const Arg *arg);
  93 static GdkFilterReturn processx(GdkXEvent *xevent, GdkEvent *event, gpointer d);
  94 static void progresschange(WebKitWebView *view, GParamSpec *pspec, Client *c);
  95 static void reload(Client *c, const Arg *arg);
  96 static void resize(GtkWidget *w, GtkAllocation *a, Client *c);
  97 static void scroll(Client *c, const Arg *arg);
  98 static void setatom(Client *c, Atom a, const char *v);
  99 static void setcookie(SoupCookie *c);
 100 static void setup(void);
 101 static void sigchld(int unused);
 102 static void source(Client *c, const Arg *arg);
 103 static void spawn(Client *c, const Arg *arg);
 104 static void stop(Client *c, const Arg *arg);
 105 static void titlechange(WebKitWebView *v, WebKitWebFrame* frame, const char* title, Client *c);
 106 static void update(Client *c);
 107 static void updatewinid(Client *c);
 108 static void usage(void);
 109 static void windowobjectcleared(GtkWidget *w, WebKitWebFrame *frame, JSContextRef js, JSObjectRef win, Client *c);
 110 static void zoom(Client *c, const Arg *arg);
 111
 112 /* configuration, allows nested code to access above variables */
 113 #include "config.h"
 114
 115 char *
 116 buildpath(const char *path) {
 117         char *apath, *p;
 118         FILE *f;
 119
 120         /* creating directory */
 121         if(path[0] == '/')
 122                 apath = g_strdup(path);
 123         else
 124                 apath = g_strconcat(g_get_home_dir(), "/", path, NULL);
 125         if((p = strrchr(apath, '/'))) {
 126                 *p = '\0';
 127                 g_mkdir_with_parents(apath, 0755);
 128                 *p = '/';
 129         }
 130         /* creating file (gives error when apath ends with "/") */
 131         if((f = fopen(apath, "a")))
 132                 fclose(f);
 133         return apath;
 134 }
 135
 136 void
 137 cleanup(void) {
 138         while(clients)
 139                 destroyclient(clients);
 140         g_free(cookiefile);
 141         g_free(scriptfile);
 142         g_free(stylefile);
 143 }
 144
 145 void
 146 runscript(WebKitWebFrame *frame, JSContextRef js) {
 147         JSStringRef jsscript;
 148         char *script;
 149         JSValueRef exception = NULL;
 150         GError *error;
 151
 152         if(g_file_get_contents(scriptfile, &script, NULL, &error)) {
 153                 jsscript = JSStringCreateWithUTF8CString(script);
 154                 JSEvaluateScript(js, jsscript, JSContextGetGlobalObject(js), NULL, 0, &exception);
 155         }
 156 }
 157
 158 void
 159 clipboard(Client *c, const Arg *arg) {
 160         gboolean paste = *(gboolean *)arg;
 161
 162         if(paste)
 163                 gtk_clipboard_request_text(gtk_clipboard_get(GDK_SELECTION_PRIMARY), pasteuri, c);
 164         else
 165                 gtk_clipboard_set_text(gtk_clipboard_get(GDK_SELECTION_PRIMARY), c->linkhover ? c->linkhover : geturi(c), -1);
 166 }
 167
 168 char *
 169 copystr(char **str, const char *src) {
 170         char *tmp;
 171         tmp = g_strdup(src);
 172
 173         if(str && *str) {
 174                 g_free(*str);
 175                 *str = tmp;
 176         }
 177         return tmp;
 178 }
 179
 180 WebKitWebView *
 181 createwindow(WebKitWebView  *v, WebKitWebFrame *f, Client *c) {
 182         Client *n = newclient();
 183         return n->view;
 184 }
 185
 186 gboolean
 187 decidedownload(WebKitWebView *v, WebKitWebFrame *f, WebKitNetworkRequest *r, gchar *m,  WebKitWebPolicyDecision *p, Client *c) {
 188         if(!webkit_web_view_can_show_mime_type(v, m)) {
 189                 webkit_web_policy_decision_ignore(p);
 190                 webkit_web_view_load_html_string(c->view,
 191                                 "Can't display content.",
 192                                 webkit_network_request_get_uri(r));
 193                 return TRUE;
 194         }
 195         return FALSE;
 196 }
 197
 198 gboolean
 199 decidewindow(WebKitWebView *view, WebKitWebFrame *f, WebKitNetworkRequest *r, WebKitWebNavigationAction *n, WebKitWebPolicyDecision *p, Client *c) {
 200         Arg arg;
 201
 202         if(webkit_web_navigation_action_get_reason(n) == WEBKIT_WEB_NAVIGATION_REASON_LINK_CLICKED) {
 203                 webkit_web_policy_decision_ignore(p);
 204                 arg.v = (void *)webkit_network_request_get_uri(r);
 205                 newwindow(NULL, &arg);
 206                 return TRUE;
 207         }
 208         return FALSE;
 209 }
 210
 211 void
 212 destroyclient(Client *c) {
 213         Client *p;
 214
 215         gtk_widget_destroy(c->indicator);
 216         gtk_widget_destroy(GTK_WIDGET(c->view));
 217         gtk_widget_destroy(c->scroll);
 218         gtk_widget_destroy(c->vbox);
 219         gtk_widget_destroy(c->win);
 220
 221         for(p = clients; p && p->next != c; p = p->next);
 222         if(p)
 223                 p->next = c->next;
 224         else
 225                 clients = c->next;
 226         free(c);
 227         if(clients == NULL)
 228                 gtk_main_quit();
 229 }
 230
 231 void
 232 destroywin(GtkWidget* w, Client *c) {
 233         destroyclient(c);
 234 }
 235
 236 void
 237 die(char *str) {
 238         fputs(str, stderr);
 239         exit(EXIT_FAILURE);
 240 }
 241
 242 void
 243 drawindicator(Client *c) {
 244         gint width;
 245         const char *uri;
 246         GtkWidget *w;
 247         GdkGC *gc;
 248         GdkColor fg;
 249
 250         uri = getatom(c, uriprop);
 251         w = c->indicator;
 252         width = c->progress * w->allocation.width / 100;
 253         gc = gdk_gc_new(w->window);
 254         gdk_color_parse(strstr(uri, "https://") == uri ?
 255                         progress_trust : progress, &fg);
 256         gdk_gc_set_rgb_fg_color(gc, &fg);
 257         gdk_draw_rectangle(w->window,
 258                         w->style->bg_gc[GTK_WIDGET_STATE(w)],
 259                         TRUE, 0, 0, w->allocation.width, w->allocation.height);
 260         gdk_draw_rectangle(w->window, gc, TRUE, 0, 0, width,
 261                         w->allocation.height);
 262         g_object_unref(gc);
 263 }
 264
 265 gboolean
 266 exposeindicator(GtkWidget *w, GdkEventExpose *e, Client *c) {
 267         drawindicator(c);
 268         return TRUE;
 269 }
 270
 271 void
 272 find(Client *c, const Arg *arg) {
 273         const char *s;
 274
 275         s = getatom(c, findprop);
 276         gboolean forward = *(gboolean *)arg;
 277         webkit_web_view_search_text(c->view, s, FALSE, forward, TRUE);
 278 }
 279
 280 const char *
 281 getcookies(SoupURI *uri) {
 282         const char *c;
 283         SoupCookieJar *j = soup_cookie_jar_text_new(cookiefile, TRUE);
 284         c = soup_cookie_jar_get_cookies(j, uri, TRUE);
 285         g_object_unref(j);
 286         return c;
 287 }
 288
 289 const char *
 290 getatom(Client *c, Atom a) {
 291         static char buf[BUFSIZ];
 292         Atom adummy;
 293         int idummy;
 294         unsigned long ldummy;
 295         unsigned char *p = NULL;
 296
 297         XGetWindowProperty(dpy, GDK_WINDOW_XID(GTK_WIDGET(c->win)->window),
 298                         a, 0L, BUFSIZ, False, XA_STRING,
 299                         &adummy, &idummy, &ldummy, &ldummy, &p);
 300         if(p)
 301                 strncpy(buf, (char *)p, LENGTH(buf)-1);
 302         else
 303                 buf[0] = '\0';
 304         XFree(p);
 305         return buf;
 306 }
 307
 308 char *
 309 geturi(Client *c) {
 310         char *uri;
 311
 312         if(!(uri = (char *)webkit_web_view_get_uri(c->view)))
 313                 uri = "about:blank";
 314         return uri;
 315 }
 316
 317 void
 318 gotheaders(SoupMessage *msg, gpointer v) {
 319         SoupURI *uri;
 320         GSList *l, *p;
 321
 322         uri = soup_message_get_uri(msg);
 323         for(p = l = soup_cookies_from_response(msg); p;
 324                 p = g_slist_next(p))  {
 325                 setcookie((SoupCookie *)p->data);
 326         }
 327         soup_cookies_free(l);
 328 }
 329
 330 gboolean
 331 keypress(GtkWidget* w, GdkEventKey *ev, Client *c) {
 332         guint i;
 333         gboolean processed = FALSE;
 334
 335         updatewinid(c);
 336         for(i = 0; i < LENGTH(keys); i++) {
 337                 if(gdk_keyval_to_lower(ev->keyval) == keys[i].keyval
 338                                 && CLEANMASK(ev->state) == keys[i].mod
 339                                 && keys[i].func) {
 340                         keys[i].func(c, &(keys[i].arg));
 341                         processed = TRUE;
 342                 }
 343         }
 344         return processed;
 345 }
 346
 347 void
 348 linkhover(WebKitWebView *v, const char* t, const char* l, Client *c) {
 349         if(l) {
 350                 c->linkhover = copystr(&c->linkhover, l);
 351         }
 352         else if(c->linkhover) {
 353                 free(c->linkhover);
 354                 c->linkhover = NULL;
 355         }
 356         update(c);
 357 }
 358
 359 void
 360 loadstatuschange(WebKitWebView *view, GParamSpec *pspec, Client *c) {
 361         switch(webkit_web_view_get_load_status (c->view)) {
 362         case WEBKIT_LOAD_COMMITTED:
 363                 setatom(c, uriprop, geturi(c));
 364                 break;
 365         case WEBKIT_LOAD_FINISHED:
 366                 c->progress = 0;
 367                 update(c);
 368                 break;
 369         default:
 370                 break;
 371         }
 372 }
 373
 374 void
 375 loaduri(Client *c, const Arg *arg) {
 376         char *u;
 377         const char *uri = (char *)arg->v;
 378         Arg a = { .b = FALSE };
 379
 380         if(strcmp(uri, "") == 0)
 381                 return;
 382         u = g_strrstr(uri, "://") ? g_strdup(uri)
 383                 : g_strdup_printf("http://%s", uri);
 384         /* prevents endless loop */
 385         if(c->uri && strcmp(u, c->uri) == 0) {
 386                 reload(c, &a);
 387         }
 388         else {
 389                 webkit_web_view_load_uri(c->view, u);
 390                 c->progress = 0;
 391                 c->title = copystr(&c->title, u);
 392                 g_free(u);
 393                 update(c);
 394         }
 395 }
 396
 397 void
 398 navigate(Client *c, const Arg *arg) {
 399         int steps = *(int *)arg;
 400         webkit_web_view_go_back_or_forward(c->view, steps);
 401 }
 402
 403 Client *
 404 newclient(void) {
 405         Client *c;
 406         WebKitWebSettings *settings;
 407         WebKitWebFrame *frame;
 408         GdkGeometry hints = { 1, 1 };
 409         char *uri, *ua;
 410
 411         if(!(c = calloc(1, sizeof(Client))))
 412                 die("Cannot malloc!\n");
 413         /* Window */
 414         if(embed) {
 415                 c->win = gtk_plug_new(embed);
 416         }
 417         else {
 418                 c->win = gtk_window_new(GTK_WINDOW_TOPLEVEL);
 419                 /* TA:  20091214:  Despite what the GNOME docs say, the ICCCM
 420                  * is always correct, so we should still call this function.
 421                  * But when doing so, we *must* differentiate between a
 422                  * WM_CLASS and a resource on the window.  By convention, the
 423                  * window class (WM_CLASS) is capped, while the resource is in
 424                  * lowercase.   Both these values come as a pair.
 425                  */
 426                 gtk_window_set_wmclass(GTK_WINDOW(c->win), "surf", "surf");
 427
 428                 /* TA:  20091214:  And set the role here as well -- so that
 429                  * sessions can pick this up.
 430                  */
 431                 gtk_window_set_role(GTK_WINDOW(c->win), "Surf");
 432         }
 433         gtk_window_set_default_size(GTK_WINDOW(c->win), 800, 600);
 434         g_signal_connect(G_OBJECT(c->win), "destroy", G_CALLBACK(destroywin), c);
 435         g_signal_connect(G_OBJECT(c->win), "key-press-event", G_CALLBACK(keypress), c);
 436         g_signal_connect(G_OBJECT(c->win), "size-allocate", G_CALLBACK(resize), c);
 437
 438         /* VBox */
 439         c->vbox = gtk_vbox_new(FALSE, 0);
 440
 441         /* Scrolled Window */
 442         c->scroll = gtk_scrolled_window_new(NULL, NULL);
 443         gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(c->scroll),
 444                         GTK_POLICY_NEVER, GTK_POLICY_NEVER);
 445
 446         /* Webview */
 447         c->view = WEBKIT_WEB_VIEW(webkit_web_view_new());
 448         g_signal_connect(G_OBJECT(c->view), "title-changed", G_CALLBACK(titlechange), c);
 449         g_signal_connect(G_OBJECT(c->view), "hovering-over-link", G_CALLBACK(linkhover), c);
 450         g_signal_connect(G_OBJECT(c->view), "create-web-view", G_CALLBACK(createwindow), c);
 451         g_signal_connect(G_OBJECT(c->view), "new-window-policy-decision-requested", G_CALLBACK(decidewindow), c);
 452         g_signal_connect(G_OBJECT(c->view), "mime-type-policy-decision-requested", G_CALLBACK(decidedownload), c);
 453         g_signal_connect(G_OBJECT(c->view), "window-object-cleared", G_CALLBACK(windowobjectcleared), c);
 454         g_signal_connect(G_OBJECT(c->view), "notify::load-status", G_CALLBACK(loadstatuschange), c);
 455         g_signal_connect(G_OBJECT(c->view), "notify::progress", G_CALLBACK(progresschange), c);
 456
 457         /* Indicator */
 458         c->indicator = gtk_drawing_area_new();
 459         gtk_widget_set_size_request(c->indicator, 0, 2);
 460         g_signal_connect (G_OBJECT (c->indicator), "expose_event",
 461                         G_CALLBACK (exposeindicator), c);
 462
 463         /* Arranging */
 464         gtk_container_add(GTK_CONTAINER(c->scroll), GTK_WIDGET(c->view));
 465         gtk_container_add(GTK_CONTAINER(c->win), c->vbox);
 466         gtk_container_add(GTK_CONTAINER(c->vbox), c->scroll);
 467         gtk_container_add(GTK_CONTAINER(c->vbox), c->indicator);
 468
 469         /* Setup */
 470         gtk_box_set_child_packing(GTK_BOX(c->vbox), c->indicator, FALSE, FALSE, 0, GTK_PACK_START);
 471         gtk_box_set_child_packing(GTK_BOX(c->vbox), c->scroll, TRUE, TRUE, 0, GTK_PACK_START);
 472         gtk_widget_grab_focus(GTK_WIDGET(c->view));
 473         gtk_widget_show(c->vbox);
 474         gtk_widget_show(c->indicator);
 475         gtk_widget_show(c->scroll);
 476         gtk_widget_show(GTK_WIDGET(c->view));
 477         gtk_widget_show(c->win);
 478         gtk_window_set_geometry_hints(GTK_WINDOW(c->win), NULL, &hints, GDK_HINT_MIN_SIZE);
 479         gdk_window_set_events(GTK_WIDGET(c->win)->window, GDK_ALL_EVENTS_MASK);
 480         gdk_window_add_filter(GTK_WIDGET(c->win)->window, processx, c);
 481         webkit_web_view_set_full_content_zoom(c->view, TRUE);
 482         frame = webkit_web_view_get_main_frame(c->view);
 483         runscript(frame, webkit_web_frame_get_global_context(frame));
 484         settings = webkit_web_view_get_settings(c->view);
 485         if(!(ua = getenv("SURF_USERAGENT")))
 486                 ua = useragent;
 487         g_object_set(G_OBJECT(settings), "user-agent", ua, NULL);
 488         uri = g_strconcat("file://", stylefile, NULL);
 489         g_object_set(G_OBJECT(settings), "user-stylesheet-uri", uri, NULL);
 490         g_object_set(G_OBJECT(settings), "auto-load-images", loadimage, NULL);
 491         g_object_set(G_OBJECT(settings), "enable-plugins", plugin, NULL);
 492         g_object_set(G_OBJECT(settings), "enable-scripts", script, NULL);
 493         g_free(uri);
 494         setatom(c, findprop, "");
 495         setatom(c, uriprop, "");
 496         if(NOBACKGROUND)
 497                 webkit_web_view_set_transparent(c->view, TRUE);
 498
 499         c->title = NULL;
 500         c->next = clients;
 501         clients = c;
 502         if(showxid) {
 503                 gdk_display_sync(gtk_widget_get_display(c->win));
 504                 printf("%u\n", (guint)GDK_WINDOW_XID(GTK_WIDGET(c->win)->window));
 505                 fflush(NULL);
 506         }
 507         return c;
 508 }
 509
 510 void
 511 newrequest(SoupSession *s, SoupMessage *msg, gpointer v) {
 512         SoupMessageHeaders *h = msg->request_headers;
 513         SoupURI *uri;
 514         const char *c;
 515
 516         soup_message_headers_remove(h, "Cookie");
 517         uri = soup_message_get_uri(msg);
 518         if((c = getcookies(uri)))
 519                 soup_message_headers_append(h, "Cookie", c);
 520         g_signal_connect_after(G_OBJECT(msg), "got-headers", G_CALLBACK(gotheaders), NULL);
 521 }
 522
 523 void
 524 newwindow(Client *c, const Arg *arg) {
 525         guint i = 0;
 526         const char *cmd[10], *uri;
 527         const Arg a = { .v = (void *)cmd };
 528         char tmp[64];
 529
 530         cmd[i++] = progname;
 531         if(embed) {
 532                 cmd[i++] = "-e";
 533                 snprintf(tmp, LENGTH(tmp), "%u\n", (int)embed);
 534                 cmd[i++] = tmp;
 535         }
 536         if(!script)
 537                 cmd[i++] = "-s";
 538         if(!plugin)
 539                 cmd[i++] = "-p";
 540         if(!loadimage)
 541                 cmd[i++] = "-i";
 542         if(showxid)
 543                 cmd[i++] = "-x";
 544         cmd[i++] = "--";
 545         uri = arg->v ? (char *)arg->v : c->linkhover;
 546         if(uri)
 547                 cmd[i++] = uri;
 548         cmd[i++] = NULL;
 549         spawn(NULL, &a);
 550 }
 551
 552 void
 553 pasteuri(GtkClipboard *clipboard, const char *text, gpointer d) {
 554         Arg arg = {.v = text };
 555         if(text != NULL)
 556                 loaduri((Client *) d, &arg);
 557 }
 558
 559 void
 560 print(Client *c, const Arg *arg) {
 561         webkit_web_frame_print(webkit_web_view_get_main_frame(c->view));
 562 }
 563
 564 GdkFilterReturn
 565 processx(GdkXEvent *e, GdkEvent *event, gpointer d) {
 566         Client *c = (Client *)d;
 567         XPropertyEvent *ev;
 568         Arg arg;
 569
 570         if(((XEvent *)e)->type == PropertyNotify) {
 571                 ev = &((XEvent *)e)->xproperty;
 572                 if(ignorexprop)
 573                         ignorexprop--;
 574                 else if(ev->state == PropertyNewValue) {
 575                         if(ev->atom == uriprop) {
 576                                 arg.v = getatom(c, uriprop);
 577                                 loaduri(c, &arg);
 578                         }
 579                         else if(ev->atom == findprop) {
 580                                 arg.b = TRUE;
 581                                 find(c, &arg);
 582                         }
 583                         return GDK_FILTER_REMOVE;
 584                 }
 585         }
 586         return GDK_FILTER_CONTINUE;
 587 }
 588
 589 void
 590 progresschange(WebKitWebView *view, GParamSpec *pspec, Client *c) {
 591         c->progress = webkit_web_view_get_progress(c->view) * 100;
 592         update(c);
 593 }
 594
 595 void
 596 reload(Client *c, const Arg *arg) {
 597         gboolean nocache = *(gboolean *)arg;
 598         if(nocache)
 599                  webkit_web_view_reload_bypass_cache(c->view);
 600         else
 601                  webkit_web_view_reload(c->view);
 602 }
 603
 604 void
 605 resize(GtkWidget *w, GtkAllocation *a, Client *c) {
 606         double zoom;
 607
 608         if(c->zoomed)
 609                 return;
 610         zoom = webkit_web_view_get_zoom_level(c->view);
 611         if(a->width * a->height < 300 * 400 && zoom != 0.2)
 612                 webkit_web_view_set_zoom_level(c->view, 0.2);
 613         else if(zoom != 1.0)
 614                 webkit_web_view_set_zoom_level(c->view, 1.0);
 615 }
 616
 617 void
 618 scroll(Client *c, const Arg *arg) {
 619         gdouble v;
 620         GtkAdjustment *a;
 621
 622         a = gtk_scrolled_window_get_vadjustment(GTK_SCROLLED_WINDOW(c->scroll));
 623         v = gtk_adjustment_get_value(a);
 624         v += gtk_adjustment_get_step_increment(a) * arg->i;
 625         v = MAX(v, 0.0);
 626         v = MIN(v, gtk_adjustment_get_upper(a) - gtk_adjustment_get_page_size(a));
 627         gtk_adjustment_set_value(a, v);
 628 }
 629
 630 void
 631 setcookie(SoupCookie *c) {
 632         int lock;
 633
 634         lock = open(cookiefile, 0);
 635         flock(lock, LOCK_EX);
 636         SoupDate *e;
 637         SoupCookieJar *j = soup_cookie_jar_text_new(cookiefile, FALSE);
 638         c = soup_cookie_copy(c);
 639         if(c->expires == NULL && sessiontime) {
 640                 e = soup_date_new_from_time_t(time(NULL) + sessiontime);
 641                 soup_cookie_set_expires(c, e);
 642         }
 643         soup_cookie_jar_add_cookie(j, c);
 644         g_object_unref(j);
 645         flock(lock, LOCK_UN);
 646         close(lock);
 647 }
 648
 649 void
 650 setatom(Client *c, Atom a, const char *v) {
 651         XSync(dpy, False);
 652         ignorexprop++;
 653         XChangeProperty(dpy, GDK_WINDOW_XID(GTK_WIDGET(c->win)->window), a,
 654                         XA_STRING, 8, PropModeReplace, (unsigned char *)v,
 655                         strlen(v) + 1);
 656 }
 657
 658 void
 659 setup(void) {
 660         char *proxy;
 661         char *new_proxy;
 662         SoupURI *puri;
 663         SoupSession *s;
 664
 665         /* clean up any zombies immediately */
 666         sigchld(0);
 667         gtk_init(NULL, NULL);
 668         if (!g_thread_supported())
 669                 g_thread_init(NULL);
 670
 671         dpy = GDK_DISPLAY();
 672         s = webkit_get_default_session();
 673         uriprop = XInternAtom(dpy, "_SURF_URI", False);
 674         findprop = XInternAtom(dpy, "_SURF_FIND", False);
 675
 676         /* dirs and files */
 677         cookiefile = buildpath(cookiefile);
 678         scriptfile = buildpath(scriptfile);
 679         stylefile = buildpath(stylefile);
 680
 681         /* request handler */
 682         s = webkit_get_default_session();
 683         soup_session_remove_feature_by_type(s, soup_cookie_get_type());
 684         soup_session_remove_feature_by_type(s, soup_cookie_jar_get_type());
 685         g_signal_connect_after(G_OBJECT(s), "request-started", G_CALLBACK(newrequest), NULL);
 686
 687         /* proxy */
 688         if((proxy = getenv("http_proxy")) && strcmp(proxy, "")) {
 689                 new_proxy = g_strrstr(proxy, "http://") ? g_strdup(proxy) :
 690                         g_strdup_printf("http://%s", proxy);
 691
 692                 puri = soup_uri_new(new_proxy);
 693                 g_object_set(G_OBJECT(s), "proxy-uri", puri, NULL);
 694                 soup_uri_free(puri);
 695                 g_free(new_proxy);
 696         }
 697 }
 698
 699 void
 700 sigchld(int unused) {
 701         if(signal(SIGCHLD, sigchld) == SIG_ERR)
 702                 die("Can't install SIGCHLD handler");
 703         while(0 < waitpid(-1, NULL, WNOHANG));
 704 }
 705
 706 void
 707 source(Client *c, const Arg *arg) {
 708         Arg a = { .b = FALSE };
 709         gboolean s;
 710
 711         s = webkit_web_view_get_view_source_mode(c->view);
 712         webkit_web_view_set_view_source_mode(c->view, !s);
 713         reload(c, &a);
 714 }
 715
 716 void
 717 spawn(Client *c, const Arg *arg) {
 718         if(fork() == 0) {
 719                 if(dpy)
 720                         close(ConnectionNumber(dpy));
 721                 setsid();
 722                 execvp(((char **)arg->v)[0], (char **)arg->v);
 723                 fprintf(stderr, "surf: execvp %s", ((char **)arg->v)[0]);
 724                 perror(" failed");
 725                 exit(0);
 726         }
 727 }
 728
 729 void
 730 stop(Client *c, const Arg *arg) {
 731         webkit_web_view_stop_loading(c->view);
 732 }
 733
 734 void
 735 titlechange(WebKitWebView *v, WebKitWebFrame *f, const char *t, Client *c) {
 736         c->title = copystr(&c->title, t);
 737         update(c);
 738 }
 739
 740 void
 741 update(Client *c) {
 742         char *t;
 743
 744         if(c->progress != 100)
 745                 t = g_strdup_printf("[%i%%] %s", c->progress, c->title);
 746         else if(c->linkhover)
 747                 t = g_strdup(c->linkhover);
 748         else
 749                 t = g_strdup(c->title);
 750         drawindicator(c);
 751         gtk_window_set_title(GTK_WINDOW(c->win), t);
 752         g_free(t);
 753 }
 754
 755 void
 756 updatewinid(Client *c) {
 757         snprintf(winid, LENGTH(winid), "%u",
 758                         (int)GDK_WINDOW_XID(GTK_WIDGET(c->win)->window));
 759 }
 760
 761 void
 762 usage(void) {
 763         fputs("surf - simple browser\n", stderr);
 764         die("usage: surf [-e xid] [-i] [-p] [-s] [-v] [-x] [uri]\n");
 765 }
 766
 767 void
 768 windowobjectcleared(GtkWidget *w, WebKitWebFrame *frame, JSContextRef js, JSObjectRef win, Client *c) {
 769         runscript(frame, js);
 770 }
 771
 772 void
 773 zoom(Client *c, const Arg *arg) {
 774         c->zoomed = TRUE;
 775         if(arg->i < 0)          /* zoom out */
 776                 webkit_web_view_zoom_out(c->view);
 777         else if(arg->i > 0)     /* zoom in */
 778                 webkit_web_view_zoom_in(c->view);
 779         else {                  /* reset */
 780                 c->zoomed = FALSE;
 781                 webkit_web_view_set_zoom_level(c->view, 1.0);
 782         }
 783 }
 784
 785 int
 786 main(int argc, char *argv[]) {
 787         int i;
 788         Arg arg;
 789
 790         progname = argv[0];
 791         /* command line args */
 792         for(i = 1, arg.v = NULL; i < argc && argv[i][0] == '-' &&
 793                         argv[i][1] != '\0' && argv[i][2] == '\0'; i++) {
 794                 if(!strcmp(argv[i], "--")) {
 795                         i++;
 796                         break;
 797                 }
 798                 switch(argv[i][1]) {
 799                 case 'e':
 800                         if(++i < argc)
 801                                 embed = atoi(argv[i]);
 802                         else
 803                                 usage();
 804                         break;
 805                 case 'i':
 806                         loadimage = 0;
 807                         break;
 808                 case 'p':
 809                         plugin = 0;
 810                         break;
 811                 case 's':
 812                         script = 0;
 813                         break;
 814                 case 'x':
 815                         showxid = TRUE;
 816                         break;
 817                 case 'v':
 818                         die("surf-"VERSION", © 2009 surf engineers, see LICENSE for details\n");
 819                 default:
 820                         usage();
 821                 }
 822         }
 823         if(i < argc)
 824                 arg.v = argv[i];
 825         setup();
 826         newclient();
 827         if(arg.v)
 828                 loaduri(clients, &arg);
 829         gtk_main();
 830         cleanup();
 831         return EXIT_SUCCESS;
 832 }