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//HTML Viewer in C--

//Copyright 2007-2020 by Veliant & Leency

//Asper, lev, Lrz, Barsuk, Nable, hidnplayr...

#ifndef AUTOBUILD

	#include "lang.h--"

#endif

//libraries

#define MEMSIZE 1024 * 800

#include "..\lib\gui.h"

#include "..\lib\draw_buf.h"

#include "..\lib\list_box.h"

#include "..\lib\cursor.h"

#include "..\lib\collection.h"

#include "..\lib\random.h"

#include "..\lib\clipboard.h"

// *.obj libraries

#include "..\lib\obj\box_lib.h"

#include "..\lib\obj\libio.h"

#include "..\lib\obj\libimg.h"

#include "..\lib\obj\http.h"

#include "..\lib\obj\iconv.h"

#include "..\lib\obj\proc_lib.h"

//useful patterns

#include "..\lib\patterns\history.h"

#include "..\lib\patterns\http_downloader.h"

#include "..\lib\patterns\simple_open_dialog.h"

#ifdef LANG_RUS

char version[]="����⮢� ��㧥� 2.0 beta1";

#define T_LOADING "����㧪� ��࠭���..."

#define T_RENDERING "�����ਭ�..."

char page_not_found[] = FROM "html\\page_not_found_ru.htm""\0";

char homepage[] = FROM "html\\homepage_ru.htm""\0";

char help[] = FROM "html\\help_ru.htm""\0";

char accept_language[]= "Accept-Language: ru\n";

char rmb_menu[] =

"��ᬮ���� ��室���

������஢��� ��室���

�����

�������� ����㧮�";

char link_menu[] =

"����஢��� ��뫪�

������ ᮤ�ন��� ��뫪�";

#else

char version[]="Text-based Browser 2.0 beta1";

#define T_LOADING "Loading..."

#define T_RENDERING "Rendering..."

char page_not_found[] = FROM "html\\page_not_found_en.htm""\0";

char homepage[] = FROM "html\\homepage_en.htm""\0";

char help[] = FROM "html\\help_en.htm""\0";

char accept_language[]= "Accept-Language: en\n";

char rmb_menu[] =

"View source

Edit source

History

Download Manager";

char link_menu[] =

"Copy link

Download link contents";

#endif

#define URL_SIZE 4000;

dword col_bg = 0xE3E2E2;

dword panel_color  = 0xE3E2E2;

dword border_color = 0x8C8C8C;

bool debug_mode = false;

bool open_in_a_new_window = false;

_http http = {0, 0, 0, 0, 0, 0, 0};

#include "..\TWB\TWB.c"

#include "history.h"

#include "show_src.h"

#include "download_manager.h"

#define URL_SERVICE_HISTORY "WebView:history"

#define URL_SERVICE_HOMEPAGE "WebView:home"

#define URL_SERVICE_HELP "WebView:help"

dword TOOLBAR_H = 40;

dword STATUSBAR_H = 15;

int action_buf;

bool source_mode = false;

progress_bar wv_progress_bar;

char stak[4096];

proc_info Form;

enum {

	BACK_BUTTON=1000,

	FORWARD_BUTTON,

	REFRESH_BUTTON,

	GOTOURL_BUTTON,

	SANDWICH_BUTTON,

	VIEW_SOURCE,

	EDIT_SOURCE,

	VIEW_HISTORY,

	DOWNLOAD_MANAGER,

	COPY_LINK_URL,

	DOWNLOAD_LINK_CONTENTS,

};

char default_dir[] = "/rd/1";

od_filter filter2 = { 16, "TXT\0HTM\0HTML\0\0" };

char URL[URL_SIZE];

char editURL[URL_SIZE];

edit_box address_box = {250,60,30,0xffffff,0x94AECE,0xffffff,0xffffff,0x10000000,URL_SIZE-2,#editURL,0,NULL,19,19};

#define SKIN_Y 24

void LoadLibraries()

{

	load_dll(boxlib,    #box_lib_init,0);

	load_dll(libio,     #libio_init,1);

	load_dll(libimg,    #libimg_init,1);

	load_dll(libHTTP,   #http_lib_init,1);

	load_dll(iconv_lib, #iconv_open,0);

	load_dll(Proc_lib,  #OpenDialog_init,0);

	OpenDialog_init stdcall (#o_dialog);

}

void HandleParam()

{

	if (param) {

		if (!strncmp(#param, "-d ", 3)) {

			strcpy(#downloader_edit, #param+3);

			CreateThread(#Downloader,#downloader_stak+4092);

			ExitProcess();

		} else if (!strncmp(#param, "-s ", 3)) {

			source_mode = true;

			strcpy(#URL, #param + 3);

		} else {

			strcpy(#URL, #param);

		}

	} else {

		strcpy(#URL, URL_SERVICE_HOMEPAGE);

	}

}

void main()

{

	int redirect_count = 0;

	int i;

	LoadLibraries();

	CreateDir("/tmp0/1/downloads");

	Libimg_LoadImage(#skin, "/sys/toolbar.png");

	HandleParam();

	skin.h = 26;

	WB1.list.SetFont(8, 14, 10011000b);

	WB1.list.no_selection = true;

	SetEventMask(EVM_REDRAW + EVM_KEY + EVM_BUTTON + EVM_MOUSE + EVM_MOUSE_FILTER + EVM_STACK);

	loop() switch(WaitEvent())

	{

		case evMouse:

			edit_box_mouse stdcall (#address_box);

			mouse.get();

			if (PageLinks.HoverAndProceed(mouse.x, WB1.list.first + mouse.y))

			&& (bufsize) && (mouse.pkm) && (mouse.up) {

				if (WB1.list.MouseOver(mouse.x, mouse.y)) EventShowPageMenu(mouse.x, mouse.y);

				break;

			}

			if (WB1.list.MouseScroll(mouse.vert)) WB1.DrawPage();

			scrollbar_v_mouse (#scroll_wv);

			if (WB1.list.first != scroll_wv.position)

			{

				WB1.list.first = scroll_wv.position;

				WB1.DrawPage();

				break;

			}

			break;

		case evButton:

			ProcessEvent(GetButtonID());

			break;

		case evKey:

			GetKeys();

			if (key_modifier&KEY_LCTRL) || (key_modifier&KEY_RCTRL) {

				if (key_scancode == SCAN_CODE_KEY_O) {EventOpenDialog();break;}

				if (key_scancode == SCAN_CODE_KEY_H) {ProcessEvent(VIEW_HISTORY);break;}

				if (key_scancode == SCAN_CODE_KEY_U) {EventViewSource();break;}

				if (key_scancode == SCAN_CODE_KEY_T)

				|| (key_scancode == SCAN_CODE_KEY_N) {RunProgram(#program_path, NULL);break;}

				if (key_scancode == SCAN_CODE_KEY_J) {ProcessEvent(DOWNLOAD_MANAGER);break;}

				if (key_scancode == SCAN_CODE_KEY_R) {ProcessEvent(REFRESH_BUTTON);break;}

				if (key_scancode == SCAN_CODE_ENTER) {EventSeachWeb();break;}

				if (key_scancode == SCAN_CODE_LEFT)  {ProcessEvent(BACK_BUTTON);break;}

				if (key_scancode == SCAN_CODE_RIGHT) {ProcessEvent(FORWARD_BUTTON);break;}

				if (key_scancode == SCAN_CODE_KEY_W) {ExitProcess();break;}

			}

			if (key_scancode == SCAN_CODE_F5) ProcessEvent(REFRESH_BUTTON);

			if (address_box.flags & ed_focus)

			{

				if (key_scancode == SCAN_CODE_ENTER) {

					ProcessEvent(key_scancode);

				}

				else {

					EAX = key_editbox;

					edit_box_key stdcall(#address_box);

				}

			}

			else

			{

				#define KEY_SCROLL_N 11

				if (SCAN_CODE_UP   == key_scancode) for (i=0;i

				if (SCAN_CODE_DOWN == key_scancode) for (i=0;i

				if (key_scancode == SCAN_CODE_F6) {address_box.flags=ed_focus; DrawOmnibox();}

				if (WB1.list.ProcessKey(key_scancode)) WB1.DrawPage();

				else ProcessEvent(key_scancode);

			}

			break;

		case evReDraw:

			if (menu.cur_y) {

				ProcessEvent(menu.cur_y);

				menu.cur_y = 0;

			}

			DefineAndDrawWindow(GetScreenWidth()-800/2-random(80),GetScreenHeight()-700/2-random(80),800,700,0x73,0,0,0);

			GetProcessInfo(#Form, SelfInfo);

			system.color.get();

			col_bg = system.color.work;

			if (Form.status_window>2) { DrawTitle(#header); break; }

			if (Form.height<120) { MoveSize(OLD,OLD,OLD,120); break; }

			if (Form.width<280) { MoveSize(OLD,OLD,280,OLD); break; }

			draw_window();

			break;

		case evNetwork:

			if (http.transfer > 0) {

				http.receive();

				EventUpdateProgressBar();

				DrawStatusBar(T_LOADING);

				if (http.receive_result == 0) {

					// Handle redirects

					if (http.status_code >= 300) && (http.status_code < 400)

					{

						redirect_count++;

						if (redirect_count>5)

						{

							notify("'Too many redirects.' -E");

							StopLoading();

						}

						else

						{

							http.handle_redirect();

							http.free();

							GetAbsoluteURL(#http.redirect_url);

							debug("Redirect: "); debugln(#http.redirect_url);

							history.back();

							strcpy(#URL, #http.redirect_url);

							strcpy(#editURL, #URL);

							DrawOmnibox();

							OpenPage();

							//ProcessLink(history.current());

						}

						break;

					}

					redirect_count = 0;

					// Loading the page is complete, free resources

					history.add(#URL);

					bufpointer = http.content_pointer;

					bufsize = http.content_received;

					http.free();

					DrawStatusBar(T_RENDERING);

					ShowPage();

					DrawStatusBar(NULL);

				}

			}

	}

}

void SetElementSizes()

{

	address_box.top = TOOLBAR_H/2-10;

	basic_line_h = calc(WB1.list.font_h * 130) / 100;

	address_box.width = Form.cwidth - address_box.left - 50;

	WB1.list.SetSizes(0, TOOLBAR_H, Form.width - 10 - scroll_wv.size_x,

		Form.cheight - TOOLBAR_H - STATUSBAR_H, basic_line_h);

	WB1.list.wheel_size = 7 * basic_line_h;

	WB1.list.column_max = WB1.list.w - scroll_wv.size_x / WB1.list.font_w + 1;

	WB1.list.visible = WB1.list.h;

	if (WB1.list.w!=WB1.DrawBuf.bufw) {

		WB1.DrawBuf.Init(WB1.list.x, WB1.list.y, WB1.list.w, 800*20);

		ProcessEvent(REFRESH_BUTTON);

	}

}

void draw_window()

{

	DrawBar(0,0, Form.cwidth,TOOLBAR_H-2, panel_color);

	DrawBar(0,TOOLBAR_H-2, Form.cwidth,1, 0xD7D0D3);

	DrawBar(0,TOOLBAR_H-1, Form.cwidth,1, border_color);

	SetElementSizes();

	DrawRectangle(address_box.left-3, address_box.top-3, address_box.width+5, 25,border_color);

	DefineButton(address_box.left-52, address_box.top-2, 24, skin.h-2, BACK_BUTTON+BT_HIDE, 0);

	DefineButton(address_box.left-27, address_box.top-2, 24, skin.h-2, FORWARD_BUTTON+BT_HIDE, 0);

	img_draw stdcall(skin.image, address_box.left-53, address_box.top-3, 51, skin.h, 0, SKIN_Y);

	DefineButton(address_box.left+address_box.width+1, address_box.top-3, 16, skin.h-1, REFRESH_BUTTON+BT_HIDE+BT_NOFRAME, 0);

	DefineButton(Form.cwidth-27, address_box.top-3, 23, skin.h-1, SANDWICH_BUTTON+BT_HIDE, 0);

	img_draw stdcall(skin.image, Form.cwidth-24, address_box.top-3, 17, skin.h, 102, SKIN_Y);

	DrawBar(0,Form.cheight - STATUSBAR_H, Form.cwidth,STATUSBAR_H, col_bg);

	DrawBar(0,Form.cheight - STATUSBAR_H, Form.cwidth,1, border_color);

	if (!header) {

		OpenPage();

		WB1.DrawScroller();

	}

	else {

		WB1.DrawPage();

		DrawOmnibox();

	}

	DrawRectangle(scroll_wv.start_x, scroll_wv.start_y, scroll_wv.size_x, scroll_wv.size_y-1, scroll_wv.bckg_col);

	DrawProgress();

}

void ProcessEvent(dword id__)

{

	switch (id__)

	{

		case 1:

			ExitProcess();

			return;

		case SCAN_CODE_BS:

		case BACK_BUTTON:

			if (history.back()) {

				strcpy(#URL, history.current());

				OpenPage();

			}

			return;

		case FORWARD_BUTTON:

			if (history.forward()) {

				strcpy(#URL, history.current());

				OpenPage();

			}

			return;

		case GOTOURL_BUTTON:

		case SCAN_CODE_ENTER:

			EventSubmitOmnibox();

			return;

		case REFRESH_BUTTON:

			if (http.transfer > 0)

			{

				StopLoading();

				draw_window();

			}

			else OpenPage();

			return;

		case SANDWICH_BUTTON:

			EventShowPageMenu(Form.cwidth - 215, TOOLBAR_H-6);

			return;

		case VIEW_SOURCE:

			EventViewSource();

			break;

		case EDIT_SOURCE:

			if (check_is_the_adress_local(#URL)) {

				RunProgram("/rd/1/tinypad", #URL);

			} else {

				CreateFile(bufsize, bufpointer, "/tmp0/1/WebView_tmp.htm");

				if (!EAX) RunProgram("/rd/1/tinypad", "/tmp0/1/WebView_tmp.htm");

			}

			return;

		case VIEW_HISTORY:

			strcpy(#URL, URL_SERVICE_HISTORY);

			OpenPage();

			return;

		case DOWNLOAD_MANAGER:

			if (!downloader_opened) {

				downloader_edit = NULL;

				CreateThread(#Downloader,#downloader_stak+4092);

			}

			return;

		case COPY_LINK_URL:

			Clipboard__CopyText(PageLinks.GetURL(PageLinks.active));

			notify("'URL copied to clipboard'O");

			return;

		case DOWNLOAD_LINK_CONTENTS:

			if (!downloader_opened) {

				strcpy(#downloader_edit, PageLinks.GetURL(PageLinks.active));

				CreateThread(#Downloader,#downloader_stak+4092);

			}

			return;

		case SCAN_CODE_F12:

			debug_mode ^= 1;

			if (debug_mode) notify("'Debug mode ON'-I");

			else notify("'Debug mode OFF'-I");

			return;

	}

}

void StopLoading()

{

	if (http.transfer)

	{

		EAX = http.transfer;

		EAX = EAX.http_msg.content_ptr;		// get pointer to data

		$push	EAX							// save it on the stack

		http_free stdcall (http.transfer);	// abort connection

		$pop	EAX

		free(EAX);						// free data

		http.transfer=0;

		bufsize = 0;

		bufpointer = free(bufpointer);

		pause(10);

	}

	wv_progress_bar.value = 0;

	DrawOmnibox();

}

void ReplaceSpaceInUrl() {

	int i;

	strcpy(#editURL, #URL);

	while (i = strchr(#URL, ' '))

	{

		i -= #URL;

		strlcpy(#URL+i+3, #editURL+i+1, sizeof(URL)-i-4);

		URL[i] = '%';

		URL[i+1] = '2';

		URL[i+2] = '0';

	}

	strcpy(#editURL, #URL);

}

void OpenPage()

{

	char getUrl[sizeof(URL)];

	StopLoading();

	strcpy(#editURL, #URL);

	history.add(#URL);

	if (!strncmp(#URL,"WebView:",8))

	{

		if (!strcmp(#URL, URL_SERVICE_HOMEPAGE)) LoadInternalPage(#homepage, sizeof(homepage));

		else if (!strcmp(#URL, URL_SERVICE_HELP)) LoadInternalPage(#help, sizeof(help));

		else if (!strcmp(#URL, URL_SERVICE_HISTORY)) ShowHistory();

		else {bufsize=0; ShowPage();} //page not found

		DrawOmnibox();

		return;

	}

	if (!strncmp(#URL,"http:",5)) || (!strncmp(#URL,"https://",8))

	{

		ReplaceSpaceInUrl();

		img_draw stdcall(skin.image, address_box.left+address_box.width+1, address_box.top-3, 17, skin.h, 68, SKIN_Y);

		if (!strncmp(#URL,"http:",5)) {

			http.get(#URL);

		} else if (!strncmp(#URL,"https://",8)) {

			sprintf(#getUrl, "http://gate.aspero.pro/?site=%s", #URL);

			http.get(#getUrl);

		}

		if (!http.transfer)

		{

			StopLoading();

			bufsize = 0;

			bufpointer = free(bufpointer);

			ShowPage();

			return;

		}

	}

	else

	{

		file_size stdcall (#URL);

		if (EBX) {

			bufsize = EBX;

			free(bufpointer);

			bufpointer = malloc(bufsize);

			ReadFile(0, bufsize, bufpointer, #URL);

		} else {

			bufsize = bufpointer = 0;

		}

		ShowPage();

	}

}

void ProcessAnchor()

{

	char anchor[256];

	dword anchor_pos;

	anchor_pos = strrchr(#URL, '#')-1;

	strlcpy(#anchor, #URL+anchor_pos, sizeof(anchor)-1);

	URL[anchor_pos] = 0x00;

	if (URL[0] == NULL) {

		//case when URL consists of anchor only

		if (anchors.get_pos_by_name(#anchor+1)!=-1) WB1.list.first = anchors.get_pos_by_name(#anchor+1);

		strcpy(#URL, history.current());

	} else {

		GetAbsoluteURL(#URL);

		OpenPage();

		if (anchors.get_pos_by_name(#anchor+1)!=-1) WB1.list.first = anchors.get_pos_by_name(#anchor+1);

	}

	WB1.DrawPage();

	strcpy(#editURL, #URL);

	strcat(#editURL, #anchor);

	DrawOmnibox();

}

void EventSubmitOmnibox()

{

	if (!editURL[0]) return;

	if (!strncmp(#editURL,"http:",5)) || (editURL[0]=='/')

	|| (!strncmp(#editURL,"https:",6)) || (!strncmp(#editURL,"WebView:",8))

	{

		strcpy(#URL, #editURL);

	}

	else

	{

		strlcpy(#URL,"http://",7);

		strcat(#URL, #editURL);

	}

	OpenPage();

}

void EventClickLink()

{

	strcpy(#URL, PageLinks.GetURL(PageLinks.active));

	GetAbsoluteURL(#URL);

	ProcessLink();

}

void ProcessLink()

{

	if (http.transfer > 0)

	{

		StopLoading();

		history.back();

	}

	if (strrchr(#URL, '#')!=0) {

		ProcessAnchor();

		return;

	}

	if (!strncmp(#URL,"mailto:", 7)) || (!strncmp(#URL,"tel:", 4))

	{

		notify(#URL);

		strcpy(#editURL, history.current());

		strcpy(#URL, history.current());

		return;

	}

	if (!strncmp(#URL,"WebView:",8)) {

		OpenPage();

		return;

	}

	if (strncmp(#URL,"http://",7)!=0) && (strncmp(#URL,"https://",8)!=0)

	{

		if (UrlExtIs(".htm")!=true) && (UrlExtIs(".html")!=true)

		{

			if (strchr(#URL, '|')) {

				ESBYTE[strchr(#URL, '|')] = NULL;

				RunProgram(#URL, strlen(#URL)+1+#URL);

			}

			else {

				RunProgram("/sys/@open", #URL);

			}

			strcpy(#editURL, history.current());

			strcpy(#URL, history.current());

			return;

		}

	}

	else

	{

		if (UrlExtIs(".png")==true) || (UrlExtIs(".gif")==true) || (UrlExtIs(".jpg")==true)

		|| (UrlExtIs(".zip")==true) || (UrlExtIs(".kex")==true) || (UrlExtIs(".pdf")==true)

		|| (UrlExtIs(".7z")==true) {

			if (!downloader_opened) {

				strcpy(#downloader_edit, #URL);

				CreateThread(#Downloader,#downloader_stak+4092);

				strcpy(#editURL, history.current());

				strcpy(#URL, history.current());

			}

			else notify("'WebView\nPlease, start a new download only when previous ended.'Et");

			return;

		}

	}

	if (open_in_a_new_window)

	{

		RunProgram(#program_path, #URL);

		strcpy(#editURL, history.current());

		strcpy(#URL, history.current());

	}

	else

	{

		OpenPage();

	}

	open_in_a_new_window = false;

}

void DrawOmnibox()

{

	int skin_x_offset;

	DrawBar(address_box.left-2, address_box.top-2, address_box.width+3, 2, address_box.color);

	DrawBar(address_box.left-2, address_box.top, 2, 22, address_box.color);

	if (address_box.flags & ed_focus) address_box.flags = ed_focus; else address_box.flags = 0;

	EditBox_UpdateText(#address_box, address_box.flags);

	edit_box_draw stdcall(#address_box);

	if (http.transfer > 0) skin_x_offset = 68; else skin_x_offset = 51;

	img_draw stdcall(skin.image, address_box.left+address_box.width+1, address_box.top-3, 17, skin.h, skin_x_offset, SKIN_Y);

}

void LoadInternalPage(dword _bufpos, _in_filesize){

	bufsize = _in_filesize;

	if (bufpointer!=_bufpos) free(bufpointer);

	bufpointer = malloc(bufsize);

	memmov(bufpointer, _bufpos, bufsize);

	ShowPage();

}

void ShowPage()

{

	WB1.list.first = 0; //scroll page to the top

	DrawOmnibox();

	if (!bufsize) || (!bufpointer) {

		LoadInternalPage(#page_not_found, sizeof(page_not_found));

	}

	WB1.ParseHtml();

	if (source_mode) {

		source_mode = false;

		ShowSource();

		LoadInternalPage(bufpointer, bufsize);

	}

}

byte UrlExtIs(dword ext)

{

	if (!strcmpi(#URL + strlen(#URL) - strlen(ext), ext)) return true;

	return false;

}

void DrawProgress()

{

	dword persent;

	if (http.transfer == 0) return;

	if (wv_progress_bar.max) persent = wv_progress_bar.value*100/wv_progress_bar.max; else persent = 10;

	DrawBar(address_box.left-2, address_box.top+20, persent*address_box.width/100, 2, 0x72B7EB);

}

void EventShowPageMenu(dword _left, _top)

{

	menu.show(Form.left+_left-6,Form.top+_top+skin_height+3, 220, #rmb_menu, VIEW_SOURCE);

}

void EventShowLinkMenu(dword _left, _top)

{

	menu.show(Form.left+_left-6,Form.top+_top+skin_height+3, 220, #link_menu, COPY_LINK_URL);

}

void EventUpdateProgressBar()

{

	wv_progress_bar.max = http.content_length;

	if (wv_progress_bar.value != http.content_received)

	{

		wv_progress_bar.value = http.content_received;

		DrawProgress();

	}

}

void EventSeachWeb()

{

	sprintf(#URL, "https://www.google.com/search?q=%s", #editURL);

	replace_char(#URL, ' ', '_', sizeof(URL));

	ProcessLink();

}

void EventOpenDialog()

{

	OpenDialog_start stdcall (#o_dialog);

	if (o_dialog.status) {

		strcpy(#URL, #openfile_path);

		OpenPage();

	}

}

void EventViewSource()

{

	char source_view_param[sizeof(URL)+4];

	strcpy(#source_view_param, "-s ");

	strcat(#source_view_param, #URL);

	RunProgram(#program_path, #source_view_param);

}

void DrawStatusBar(dword _status_text)

{

	status_text.start_x = 10;

	status_text.start_y = Form.cheight - STATUSBAR_H + 3;

	status_text.area_size_x = Form.cwidth - status_text.start_x -3;

	DrawBar(status_text.start_x, status_text.start_y, status_text.area_size_x, 9, col_bg);

	status_text.text_pointer = _status_text;

	PathShow_prepare stdcall(#status_text);

	PathShow_draw stdcall(#status_text);

}

stop: