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remote.cpp
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//
// remote.cpp
// remote
//
// Created by Vitaly Pronkin on 14/05/14.
// Copyright (c) 2014 mifki. All rights reserved.
//
#include <sys/stat.h>
#include <stdint.h>
#include <stdlib.h>
#include <math.h>
#include <iostream>
#include <map>
#include <vector>
#include <queue>
#include <algorithm>
#include <mutex>
#include <zlib.h>
#if defined(WIN32)
#define WIN32_LEAN_AND_MEAN
#define NOMINMAX
#include <windows.h>
float roundf(float x)
{
return x >= 0.0f ? floorf(x + 0.5f) : ceilf(x - 0.5f);
}
#elif defined(__APPLE__)
#else
#include <dlfcn.h>
#endif
#include "Core.h"
#include "Console.h"
#include "Export.h"
#include "PluginManager.h"
#include "VTableInterpose.h"
#include "MemAccess.h"
#include "VersionInfo.h"
#include "TileTypes.h"
#include "LuaTools.h"
#include "modules/Maps.h"
#include "modules/World.h"
#include "modules/MapCache.h"
#include "modules/Gui.h"
#include "modules/Screen.h"
#include "modules/Buildings.h"
#include "modules/Units.h"
#include "modules/Items.h"
#include "df/graphic.h"
#include "df/enabler.h"
#include "df/init.h"
#include "df/d_init.h"
#include "df/renderer.h"
#include "df/interfacest.h"
#include "df/world.h"
#include "df/world_data.h"
#include "df/viewscreen_dwarfmodest.h"
#include "df/viewscreen_topicmeeting_takerequestsst.h"
#include "df/viewscreen_topicmeetingst.h"
#include "df/viewscreen_meetingst.h"
#include "df/viewscreen_civlistst.h"
#include "tinythread.h"
#include <enet/enet.h>
#include "sha256.h"
/*unsigned long long enet_time_get2 (void)
{
struct timeval timeVal;
gettimeofday (& timeVal, NULL);
return timeVal.tv_sec*1000*1000+timeVal.tv_usec;
}*/
using namespace DFHack;
using df::global::world;
using std::string;
using std::vector;
using df::global::enabler;
using df::global::gps;
using df::global::ui;
using df::global::init;
using df::global::d_init;
using df::global::gview;
#if defined(DF_04024) || defined(DF_04303)
#define TEXPOS_TYPE int32_t
#else
#define TEXPOS_TYPE long
#endif
static bool enabled;
static color_ostream *out2;
static unsigned short advflags;
#define ADVFLAG_NO_FASTRENDER (1 << 0)
#define ADVFLAG_NO_LOCALMAP (1 << 1)
#define ADVFLAG_FASTRENDER (1 << 2)
static int gwindow_x, gwindow_y, gwindow_z;
static int mwindow_x;
static int gmenu_w;
// Buffers for map rendering
static uint8_t *gscreen;
static uint8_t *gscreen_origin;
static TEXPOS_TYPE *gscreentexpos;
static TEXPOS_TYPE *gscreentexpos_origin;
static int8_t *gscreentexpos_addcolor;
static int8_t *gscreentexpos_addcolor_origin;
static uint8_t *gscreentexpos_grayscale, *gscreentexpos_cf, *gscreentexpos_cbr;
static uint8_t *gscreentexpos_grayscale_origin, *gscreentexpos_cf_origin, *gscreentexpos_cbr_origin;
// Buffers for rendering lower levels before merging
static uint8_t *mscreen;
static uint8_t *mscreen_origin;
static TEXPOS_TYPE *mscreentexpos;
static TEXPOS_TYPE *mscreentexpos_origin;
static int8_t *mscreentexpos_addcolor;
static int8_t *mscreentexpos_addcolor_origin;
static uint8_t *mscreentexpos_grayscale, *mscreentexpos_cf, *mscreentexpos_cbr;
static uint8_t *mscreentexpos_grayscale_origin, *mscreentexpos_cf_origin, *mscreentexpos_cbr_origin;
static uint8_t *gscreen_under, *mscreen_under;
static uint8_t *screen_under_ptr, *screen_ptr;
static uint8_t *world_map;
#include "patches.hpp"
#if defined(WIN32) && !defined(_WIN64)
// On Windows 32bit there's no parameter pointing to the map_renderer structure
typedef void (_stdcall *RENDER_MAP)(int);
#else
typedef void (*RENDER_MAP)(void*, int);
#endif
typedef void (*RENDER_WORLD_MAP)(df::world_data *, int, int, int, int, int, int, int, int, int, int, int, int);
RENDER_MAP _render_map;
RENDER_WORLD_MAP render_world_map;
#if defined(WIN32) && !defined(_WIN64)
#define render_map() _render_map(0)
#else
#define render_map() _render_map(df::global::map_renderer, 0)
#endif
static tthread::thread * enthread;
static void enthreadmain(ENetHost*);
unsigned char buf[1024*1024];
struct rendered_block {
unsigned char x, y, z;
unsigned int data[16*16];
};
rendered_block *sent_blocks_idx[16][16][256];
bool *rendered_tiles;
static lua_State *L;
static int wx, wy;
static bool rendering;
static int newwidth, newheight, curwidth, curheight;
static volatile bool waiting_render;
static volatile bool map_render_enabled;
static volatile bool render_initial;
static bool rendering_remote_map;
static unsigned int server_token;
static unsigned int world_token;
static bool remote_on;
static int enet_port = 1235;
static bool debug;
static string publish_name;
static enet_uint32 last_publish_attempt;
static bool mediation_connected;
static std::string pwd_hash = "";
void remote_publish(string &name);
std::list<ENetPacket*> outgoing;
static ENetPeer *client_peer = NULL;
static ENetPeer *mediation_peer = NULL;
static ENetPeer *ip_check_peer = NULL;
static ENetHost *server;
static ENetAddress ext_addr;
std::string client_addr;
bool ip_check_done;
static int timer_timeout = -1;
static string timer_fn;
static int maxlevels = 3;
unsigned int t2 = 0;
std::recursive_mutex render_mutex;
static void patch_rendering(bool enable_lower_levels)
{
#ifndef NO_RENDERING_PATCH
static bool ready = false;
static unsigned char orig[MAX_PATCH_LEN];
intptr_t addr = p_render_lower_levels.addr;
#ifdef WIN32
addr += Core::getInstance().vinfo->getRebaseDelta();
#endif
if (!ready)
{
#if defined(DF_04305)
(new MemoryPatcher(Core::getInstance().p))->makeWritable((void*)addr, sizeof(p_render_lower_levels.len));
#else
(new MemoryPatcher(Core::getInstance().p.get()))->makeWritable((void*)addr, sizeof(p_render_lower_levels.len));
#endif
memcpy(orig, (void*)addr, p_render_lower_levels.len);
ready = true;
}
if (enable_lower_levels)
memcpy((void*)addr, orig, p_render_lower_levels.len);
else
apply_patch(NULL, p_render_lower_levels);
#endif
}
#include "corehacks.hpp"
#include "dwarfmode.hpp"
#include "embark.hpp"
#include "civlist.hpp"
#include "units.hpp"
#include "items.hpp"
#include "buildings.hpp"
#include "itemcache.hpp"
#if defined(WIN32)
void check_open_firewall(color_ostream *out2, int port);
#endif
std::string hash_password(const std::string &pwd)
{
std::string q = pwd;
for (int i = 0; i < 517; i++)
q = sha256(q);
return q;
}
bool verify_pwd(string pwdhash)
{
return (pwd_hash.size() == 0 || pwd_hash == pwdhash);
}
void resend_outgoing()
{
for (auto it = outgoing.begin(); it != outgoing.end(); it++)
{
ENetPacket *pkt = *it;
enet_peer_send (client_peer, 0, pkt);
}
}
void packet_free_cb(ENetPacket *packet)
{
//XXX: if several packets are sent at once, this function may be called not in the sending order
//XXX: so we can't just use the first packet in the queue
if (packet->flags & ENET_PACKET_FLAG_SENT)
outgoing.remove(packet);
else
{
ENetPacket * pkt = enet_packet_create (packet->data, packet->dataLength, packet->flags);
pkt->freeCallback = packet_free_cb;
std::list<ENetPacket*>::iterator findIter = std::find(outgoing.begin(), outgoing.end(), packet);
if (findIter != outgoing.end())
*findIter = pkt;
}
}
unsigned char *zbuf = NULL;
int zbufsz = 0;
void send_enet(const unsigned char *buf, int sz, ENetPeer *peer)
{
z_stream strm;
bool compressed = false;
if (sz >= 500)
{
// *out2 << "compressing " << sz << std::endl;
strm.zalloc = Z_NULL;
strm.zfree = Z_NULL;
strm.opaque = Z_NULL;
deflateInit(&strm, Z_DEFAULT_COMPRESSION);
int zsz = deflateBound(&strm, sz);
if (zsz > zbufsz)
{
free(zbuf);
zbuf = (unsigned char*) malloc(zsz + 1);
zbuf[0] = 129;
zbufsz = zsz;
}
strm.avail_in = sz;
strm.next_in = (Bytef*)buf;
strm.avail_out = zsz;
strm.next_out = zbuf + 1;
int ret = deflate(&strm, Z_FINISH); /* no bad return value */
zsz = strm.next_out - zbuf;
if (ret == Z_STREAM_END && zsz < sz)
{
buf = zbuf;
sz = zsz + 1;
compressed = true;
}
else
deflateEnd(&strm);
}
ENetPacket * packet = enet_packet_create (buf, sz, ENET_PACKET_FLAG_RELIABLE);
if (compressed)
deflateEnd(&strm);
if (peer == client_peer)
{
packet->freeCallback = packet_free_cb;
outgoing.push_back(packet);
}
enet_peer_send(peer, 0, packet);
}
int send_response(lua_State *L)
{
int seq = lua_tointeger(L, lua_upvalueindex(1));
ENetPeer *peer = (ENetPeer*) lua_touserdata(L, lua_upvalueindex(2));
int type = lua_tointeger(L, 1);
size_t len;
const char *s = lua_tolstring(L, 2, &len);
if (s)
{
unsigned char *b = buf;
*(b++) = type;
*(unsigned short*)b = seq + 1;
b += 2;
memcpy(b, s, len);
b += len;
send_enet(buf, b-buf, peer);
}
return 0;
}
std::string address2ip(ENetAddress *addr)
{
char name[32];
enet_address_get_host_ip(addr, name, sizeof(name));
return name;
}
static int old_status1 = 0, old_status2 = 0;
static bool force_send_status;
void empty_map_cache()
{
for (int i = 0; i < 16; i++)
for (int j = 0; j < 16; j++)
for (int z = 0; z < 256; z++)
free(sent_blocks_idx[i][j][z]);
memset(sent_blocks_idx, 0, sizeof(sent_blocks_idx));
memset(rendered_tiles, 0, 256*256*256*sizeof(bool));
}
bool block_is_unmined(int bx, int by, int zlevel)
{
bool unmined = true;
df::map_block *block = world->map.block_index[bx][by][zlevel];
if (!block)
return true;
for (int j = 0; j < 16; j++)
for (int i = 0; i < 16; i++)
if (!block->designation[i][j].bits.hidden)
return false;
return true;
}
#define DECODE_TILE(is,bg,fg,texpos) \
{ \
if (graphics && (texpos=*(gscreentexpos+tile))) \
{ \
if (gscreentexpos_grayscale[tile]) \
{ \
fg = gscreentexpos_cf[tile]; \
bg = gscreentexpos_cbr[tile]; \
} \
else if (gscreentexpos_addcolor[tile]) \
{ \
bg = s[2] & 7; \
unsigned char bold = (s[3] & 1) * 8; \
fg = (s[1] + bold) % 16; \
} \
else \
{ \
fg = 15; \
bg = 0; \
} \
\
is = texpos | (fg << 4) | bg; \
} \
else \
{ \
texpos = 0; \
is = *((unsigned int*)gscreen + tile); \
is &= 0x01ffffff; /* Ignore depth */ \
} \
}
static unsigned char mapbuf[10000], mapbuf2[10000];
void send_initial_map(unsigned short seq, unsigned char startblk, ENetPeer *conn)
{
bool graphics = init->display.flag.is_set(init_display_flags::USE_GRAPHICS);
int map_w = world->map.x_count;
int map_h = world->map.y_count;
int blk_w = map_w / 16;
int blk_h = map_h / 16;
if (!startblk)
{
int ox = wx;
int oy = wy;
int ow = newwidth;
int oh = newheight;
wx = 0;
wy = 0;
df::viewscreen *ws = Gui::getCurViewscreen();
if (df::viewscreen_dwarfmodest::_identity.is_direct_instance(ws))
{
{
FastCoreSuspender suspend;
newwidth = map_w;
newheight = map_h;
waiting_render = true;
render_initial = true;
}
while(waiting_render);
}
/**out2 << "aa" << std::endl;
{
CoreSuspender suspend;
//while (enabler->outstanding_gframes);
newwidth = map_w;
newheight = map_h;
render_remote_map();
gps->force_full_display_count = 2;
}*/
/*{
newwidth = map_w;
newheight = map_h;
core_force_render();
}*/
wx = ox;
wy = oy;
newwidth = ow;
newheight = oh;
}
int zlevel = gwindow_z;
unsigned char *b = buf;
int cnt = 0;
//XXX: for example, if the game has already ended, we're on end announcement screen
if (!world->map.block_index)
goto done;
*(b++) = 131;
*(unsigned short*)b = seq + 1;
b += 2;
*(b++) = zlevel;
for (int by = 0; by < blk_h; by++)
{
for (int bx = 0; bx < blk_w; bx++)
{
int idx = bx + by * blk_w;
if (idx < startblk)
continue;
// Skip unmined or non-existent blocks
// if (block_is_unmined(bx, by, zlevel))
// continue;
// Limit to number of blocks per msg
if (++cnt >= 10)
{
// *nextblk = idx;
// goto enough;
send_enet(buf, (int)(b-buf), conn);
b = buf;
*(b++) = 131;
*(unsigned short*)b = seq + 1;
b += 2;
*(b++) = zlevel;
}
rendered_block *rblk = sent_blocks_idx[bx][by][zlevel];
if (!rblk)
rblk = sent_blocks_idx[bx][by][zlevel] = (rendered_block*) calloc(1, sizeof(rendered_block));
*(b++) = bx;
*(b++) = by;
unsigned char *firstb = b;
*(b++) = 0;
int x0 = 0, y0 = 0, dz0 = 0;
bool deeper = false;
bool senddz = false, senddz2 = false;
unsigned char *mapptr = mapbuf, *mapptr2 = mapbuf2;
godeeper:;
for (uint8_t j = 0; j < 16; j++)
{
for (uint8_t i = 0; i < 16; i++)
{
int x = bx*16 + i;
int y = by*16 + j;
const int tile = x * map_h + y;
unsigned char *s = gscreen + tile*4;
int dz = (s[3] & 0xfe) >> 1;
if (dz < dz0)
continue;
if (dz > dz0)
{
if (!deeper)
{
x0 = x;
y0 = y;
deeper = true;
}
continue;
}
unsigned int is;
unsigned char bg, fg;
unsigned short texpos;
DECODE_TILE(is, bg, fg, texpos);
*(mapptr++) = (j << 4) | i;
if (*(gscreen_under+tile*4))
{
// if (mapptr2 - mapbuf2 >= sizeof(mapbuf2)-10)
// goto enough;
{
unsigned char *s_under = gscreen_under + tile*4;
*(mapptr++) = s_under[0]; //ch
bg = s_under[2] & 7;
unsigned char bold = (s_under[3] & 1) * 8;
fg = (s_under[1] + bold) % 16;
*(mapptr++) = fg | (bg << 4);
if (senddz)
{
senddz = false;
*(mapptr-1) |= 128;
*(mapptr++) = dz0;
}
}
*(mapptr2++) = (j << 4) | i;
if (texpos)
{
*(unsigned short*)mapptr2 = texpos;
mapptr2 += 2;
if (gscreentexpos_grayscale[tile])
{
fg = gscreentexpos_cf[tile];
bg = gscreentexpos_cbr[tile];
}
else if (gscreentexpos_addcolor[tile])
{
bg = s[2] & 7;
unsigned char bold = (s[3] & 1) * 8;
fg = (s[1] + bold) % 16;
}
else
{
fg = 15;
bg = 0;
}
}
else
{
*(unsigned short*)mapptr2 = s[0];
mapptr2 += 2;
bg = s[2] & 7;
unsigned char bold = (s[3] & 1) * 8;
fg = (s[1] + bold) % 16;
}
*(mapptr2++) = fg | (bg << 4);
if (senddz2)
{
senddz2 = false;
*(mapptr2-1) |= 128;
*(mapptr2++) = dz0;
}
}
else
{
*(mapptr++) = s[0]; //ch
bg = s[2] & 7;
unsigned char bold = (s[3] & 1) * 8;
fg = (s[1] + bold) % 16;
*(mapptr++) = fg | (bg << 4);
if (senddz)
{
senddz = false;
*(mapptr-1) |= 128;
*(mapptr++) = dz0;
}
}
rblk->data[i + j * 16] = is;
if (dz)
{
for (int z = zlevel-dz+1;z<=zlevel;z++)
rendered_tiles[z*256*256 + x+y*256] = true;
}
}
}
if (deeper) {
dz0++;
deeper = false;
senddz = true;
senddz2 = true;
// *out2 << "deeper "<<dz0 <<std::endl;
goto godeeper;
}
if (mapptr != mapbuf)
{
*firstb |= (1 << 3);
int len = mapptr-mapbuf;
*(short*)b = len;
b += 2;
memcpy(b, mapbuf, len);
b += len;
}
if (mapptr2 != mapbuf2)
{
*firstb |= (1 << 4);
int len = mapptr2-mapbuf2;
*(short*)b = len;
b += 2;
memcpy(b, mapbuf2, len);
b += len;
}
}
}
// enough:;
send_enet(buf, (int)(b-buf), conn);
done:;
b = buf;
*(b++) = 128;
*(unsigned short*)b = seq + 1;
b += 2;
//TODO: send 1 on success, 0 on error (goto from above)
send_enet(buf, (int)(b-buf), conn);
// if (!*nextblk) {
map_render_enabled = true;
t2 = enabler->gframe_last;
*out2 << "initial map sent" << std::endl;
// }
}
bool send_map_updates(ENetPeer *conn)
{
bool graphics = init->display.flag.is_set(init_display_flags::USE_GRAPHICS);
bool needs_sync = force_send_status;
force_send_status = false;
unsigned char *b = buf;
unsigned char *firstb = buf;
*(b++) = 0;
{
// long t1 = enet_time_get2();
FastCoreSuspender suspend;
if (!remote_on)
return false;
// long t2 = enet_time_get2();
// *out2 << (t2-t1) << std::endl;
int top = lua_gettop(L);
Lua::PushModulePublic(*out2, L, "remote", "get_status_ext");
lua_pushinteger(L, needs_sync);
if (Lua::SafeCall(*out2, L, 1, 4, true))
{
int status1 = lua_tointeger(L, -4);
int status2 = lua_tointeger(L, -3);
size_t len, len2;
const unsigned char *extdata = (const unsigned char*) lua_tolstring(L, -2, &len);
const unsigned char *centerdata = (const unsigned char*) lua_tolstring(L, -1, &len2);
// Status
if (old_status1 != status1 || old_status2 != status2 || needs_sync)
{
*firstb |= (1 << 0);
*(b++) = status1;
*(b++) = status2;
old_status1 = status1;
old_status2 = status2;
}
// Extended data
if (extdata)
{
*firstb |= (1 << 1);
memcpy(b, extdata, len);
b += len;
}
// Center data
if (centerdata)
{
int newwx = std::max(0, (int)roundf(centerdata[0] - newwidth/2.0f));
int newwy = std::max(0, (int)roundf(centerdata[1] - newheight/2.0f));
//TODO: by this time, window_z already matches new center, need to use wz
if (1 || wx != newwx || wy != newwy || *df::global::window_z != centerdata[2])
{
*firstb |= (1 << 2);
memcpy(b, centerdata, len2);
b += len2;
wx = newwx;
wy = newwy;
*df::global::window_z = centerdata[2];
}
}
}
lua_settop(L, top);
}
static bool send_z = false;
static int zlevel = 0;
if (zlevel != gwindow_z)
{
send_z = true;
zlevel = gwindow_z;
}
unsigned char *mapptr = mapbuf, *mapptr2 = mapbuf2;
{
render_mutex.lock();
int maxx = std::min(curwidth, world->map.x_count - gwindow_x);
int maxy = std::min(curheight, world->map.y_count - gwindow_y);
int cnt = 0;
int lastdz = 0;
int x0 = 0, y0 = 0, dz0 = 0;
bool deeper = false;
bool senddz = false, senddz2 = false;
godeeper:;
for (int y = y0; y < maxy; y++)
{
for (int x = x0; x < maxx; x++)
{
const int tile = x * curheight + y;
unsigned char *s = gscreen + tile*4;
int dz = (s[3] & 0xfe) >> 1;
if (dz < dz0)
continue;
if (dz > dz0)
{
if (!deeper)
{
x0 = x;
y0 = y;
deeper = true;
}
continue;
}
int xx = x + gwindow_x;
int yy = y + gwindow_y;
rendered_block *rblk = sent_blocks_idx[xx>>4][yy>>4][zlevel];
if (!rblk)
rblk = sent_blocks_idx[xx>>4][yy>>4][zlevel] = (rendered_block*) calloc(1, sizeof(rendered_block));
unsigned int is;
unsigned char bg, fg;
unsigned short texpos;
DECODE_TILE(is, bg, fg, texpos);
if (is != rblk->data[xx%16 + (yy%16) * 16])
{
if (mapptr - mapbuf >= sizeof(mapbuf)-10)
goto enough;
*(mapptr++) = x + gwindow_x;
*(mapptr++) = y + gwindow_y;
if (*(gscreen_under+tile*4))
{
if (mapptr2 - mapbuf2 >= sizeof(mapbuf2)-10)
goto enough;
{
unsigned char *s_under = gscreen_under + tile*4;
*(mapptr++) = s_under[0]; //ch
bg = s_under[2] & 7;
unsigned char bold = (s_under[3] & 1) * 8;
fg = (s_under[1] + bold) % 16;
*(mapptr++) = fg | (bg << 4);
if (senddz)
{
senddz = false;
*(mapptr-1) |= 128;
*(mapptr++) = dz0;
}
}
*(mapptr2++) = x + gwindow_x;
*(mapptr2++) = y + gwindow_y;
if (texpos)
{
*(unsigned short*)mapptr2 = texpos;
mapptr2 += 2;
if (gscreentexpos_grayscale[tile])
{
fg = gscreentexpos_cf[tile];
bg = gscreentexpos_cbr[tile];
}
else if (gscreentexpos_addcolor[tile])
{
bg = s[2] & 7;
unsigned char bold = (s[3] & 1) * 8;
fg = (s[1] + bold) % 16;
}
else
{
fg = 15;
bg = 0;
}
}
else
{
*(unsigned short*)mapptr2 = s[0];
mapptr2 += 2;
bg = s[2] & 7;
unsigned char bold = (s[3] & 1) * 8;
fg = (s[1] + bold) % 16;
}
*(mapptr2++) = fg | (bg << 4);
if (senddz2)
{
senddz2 = false;
*(mapptr2-1) |= 128;
*(mapptr2++) = dz0;
}
}
else
{
*(mapptr++) = s[0]; //ch
bg = s[2] & 7;
unsigned char bold = (s[3] & 1) * 8;
fg = (s[1] + bold) % 16;
*(mapptr++) = fg | (bg << 4);
if (senddz)
{
senddz = false;
*(mapptr-1) |= 128;
*(mapptr++) = dz0;
}
}
rblk->data[xx%16 + (yy%16) * 16] = is;
if (dz)
{
for (int z = zlevel-dz+1;z<=zlevel;z++)
rendered_tiles[z*256*256 + xx+yy*256] = true;
}
}
}
x0 = 0;
}
if (deeper) {
dz0++;
deeper = false;
senddz = true;
senddz2 = true;
// *out2 << "deeper "<<dz0 <<std::endl;
goto godeeper;
}
//TODO: if we've reached limit, should send the rest the next tick and not the next frame !
enough:;