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