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Auto heal the player
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Yvon Cognard committed Jul 21, 2010
1 parent 47502a1 commit 4cd16b9
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Showing 3 changed files with 258 additions and 5 deletions.
3 changes: 2 additions & 1 deletion divert_socket/includes/parse.h
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@@ -1,6 +1,7 @@
#ifndef _PARSE_H_
#define _PARSE_H_

void parse_server_packet(unsigned char *data, int len);
int parse_incoming_packet(unsigned char *data, int data_len);
int parse_outgoing_packet(unsigned char *data, int data_len);

#endif
11 changes: 7 additions & 4 deletions divert_socket/src/main.c
View file
Expand Up @@ -13,6 +13,7 @@
#include "ip.h"
#include "udp.h"
#include "debug.h"
#include "parse.h"

#define IPPROTO_DIVERT 254
#define BUFSIZE 65535
Expand Down Expand Up @@ -84,23 +85,25 @@ int main(int argc, char** argv) {

if (sin.sin_addr.s_addr == 0) // Outgoing packet
{
write(0, ">", 1);
// write(0, ">", 1);
#ifdef DEBUG
printf("____ OUTGOING ____\n");
debug_show_ip_header(packet);
printf("------------------\n");
#endif
craft_outgoing_packet(data, data_len);
if (parse_outgoing_packet(data, data_len) == 1)
craft_outgoing_packet(data, data_len);
}
else // Incoming packet
{
write(0, "<", 1);
// write(0, "<", 1);
#ifdef DEBUG
printf("____ INCOMING ____\n");
debug_show_ip_header(packet);
printf("------------------\n");
#endif
craft_incoming_packet(data, data_len);
if (parse_incoming_packet(data, data_len) == 1)
craft_incoming_packet(data, data_len);
}
}
else
Expand Down
249 changes: 249 additions & 0 deletions divert_socket/src/parse.c
View file
@@ -0,0 +1,249 @@
#include <sys/types.h>
#include <stdio.h>
#include <arpa/inet.h>

#include "crafting.h"

#define PAK_SERVER_UpdateCoordinates 0x0001 // a unit is moving on screen
// 2 int16 x_coord; // new X coordinate on map
// 4 int16 y_coord; // new Y coordinate on map
// 6 int16 skin_id; // unit skin ID
// 8 int32 unit_id; // unit ID
// 12 int8 light_percentage; // radiance from 0 to 100
// 13 int8 unit_type; // 0 = monster, 1 = NPC, 2 = player
// 14 int8 health_percentage; // visual health from red (0) to green (100)
#define PAK_SERVER_SynchronizePlayerCoordinates 0x0009 // server is making sure client is at the right location
// 2 int16 x_coord;
// 4 int16 y_coord;
// 6 int16 world;
#define PAK_CLIENT_PutPlayerInGame 0x000D
// 2 string8 playername;
#define PAK_SERVER_PutPlayerInGame 0x000D
// 2 int8 unknown1;
// 3 int32 player_id;
// 7 int16 x_coord;
// 9 int16 y_coord;
// 11 int16 world;
// 13 int32 health;
// 17 int32 max_health;
// 21 int16 mana;
// 23 int16 max_mana;
// 25 int64 xp;
// 33 int64 next_level_xp;
// 41 int16 strength;
// 43 int16 endurance;
// 45 int16 dexterity;
// 47 int16 willpower; // unused
// 49 int16 wisdom;
// 51 int16 intelligence;
// 53 int16 luck; // unused
// 55 int8 seconds;
// 56 int8 minutes;
// 57 int8 hour;
// 58 int8 week;
// 59 int8 day;
// 60 int8 month;
// 61 int16 year;
// 63 int32 gold;
// 67 int16 level;
// 69 int64 base_level_xp;
#define PAK_CLIENT_Attack 0x0018
// 2 int16 x_coord;
// 4 int16 y_coord;
// 6 int32 unit_id;
#define PAK_SERVER_Unknown24 0x0018
#define PAK_CLIENT_CastSpell 0x0020
// 2 int16 spell_id;
// 4 int16 target_x_coord;
// 6 int16 target_y_coord;
// 8 int32 target_unit_id;
#define PAK_SERVER_Unknown32 0x0020
#define PAK_CLIENT_UpdateLife 0x0021
#define PAK_SERVER_UpdateLife 0x0021
// 2 int32 health;
// 6 int32 max_health;

struct s_player {
uint32_t player_id;
uint16_t x_coord;
uint16_t y_coord;
uint32_t health;
uint32_t max_health;
uint16_t mana;
uint16_t max_mana;
};

struct s_player player;

void debug_show_player()
{
printf("Player:\n\
player_id -> %d\n\
x_coord -> %d\n\
y_coord -> %d\n\
health -> %d\n\
max_health -> %d\n\
mana -> %d\n\
max_mana -> %d\n",
player.player_id,
player.x_coord,
player.y_coord,
player.health,
player.max_health,
player.mana,
player.max_mana);
}

uint16_t read_short(unsigned char *data, int pos)
{
return (ntohs(*(uint16_t *)(data + pos)));
}

uint16_t read_long(unsigned char *data, int pos)
{
return (ntohl(*(uint32_t *)(data + pos)));
}

void write_short(uint16_t num, unsigned char *data, int pos)
{
uint16_t *ptr;

ptr = (uint16_t *)(data + pos);
*ptr = htons(num);
}

void write_long(uint32_t num, unsigned char *data, int pos)
{
uint32_t *ptr;

ptr = (uint32_t *)(data + pos);
*ptr = htonl(num);
}

int player_in_game()
{
return (player.player_id != 0);
}

void cast_spell(uint16_t spell_id, uint16_t target_x_coord, uint16_t target_y_coord, uint32_t target_unit_id)
{
printf("Automated spelling\n");

unsigned char data[20];

data[1] = 0x90;

write_short(PAK_CLIENT_CastSpell, data, 8);
write_short(spell_id, data, 10);
write_short(target_x_coord, data, 12);
write_short(target_y_coord, data, 14);
write_long (target_unit_id, data, 16);

craft_outgoing_packet(data, 20);
}

void cast_spell_on_player(uint16_t spell_id)
{
cast_spell(spell_id, player.x_coord, player.y_coord, player.player_id);
}

void cast_heal_on_player()
{
cast_spell_on_player(10033);
}

uint16_t get_packet_id(unsigned char *data, unsigned char **packet_arguments)
{
uint16_t packet_id;

packet_id = ntohs(*(u_short *)(data + 8));
*packet_arguments = (unsigned char *)(data + 10);

if (packet_id == 0x0e) // Reason of this ???
{
packet_id = ntohs(*(u_short *)(data + 14));
*packet_arguments = (unsigned char *)(data + 16);
}

return (packet_id);
}

int parse_incoming_packet(unsigned char *data, int data_len)
{
uint16_t packet_id;
unsigned char *arguments;

packet_id = get_packet_id(data, &arguments);

if (packet_id == PAK_SERVER_UpdateCoordinates)
{
// Player moving?
if (player_in_game() && read_long(arguments, 6) == player.player_id)
{
player.x_coord = read_short(arguments, 0);
player.y_coord = read_short(arguments, 2);
}
}

else if (packet_id == PAK_SERVER_SynchronizePlayerCoordinates && player_in_game())
{
player.x_coord = read_short(arguments, 0);
player.y_coord = read_short(arguments, 2);
}

else if (packet_id == PAK_SERVER_UpdateLife && player_in_game())
{
player.health = ntohl(*(uint32_t *)(arguments));
player.max_health = ntohl(*(uint32_t *)(arguments + 4));

if (player.health * 100 / player.max_health <= 50)
cast_heal_on_player();
}

else if (packet_id == PAK_SERVER_PutPlayerInGame)
{
player.player_id = ntohl(*(uint32_t *)(arguments + 1));
player.x_coord = ntohs(*(uint16_t *)(arguments + 5));
player.y_coord = ntohs(*(uint16_t *)(arguments + 7));
player.health = ntohl(*(uint32_t *)(arguments + 11));
player.max_health = ntohl(*(uint32_t *)(arguments + 15));
player.mana = ntohs(*(uint16_t *)(arguments + 19));
player.max_mana = ntohs(*(uint16_t *)(arguments + 21));
}

return (1); // Reinject the packet
}

int parse_outgoing_packet(unsigned char *data, int data_len)
{
uint16_t packet_id;
unsigned char *arguments;

packet_id = get_packet_id(data, &arguments);

if (packet_id == PAK_CLIENT_Attack)
{
printf("Attacking unit:\n\
x_coord -> %d\n\
y_coord -> %d\n\
unit_id -> %d\n",
read_short(arguments, 0),
read_short(arguments, 2),
read_long(arguments, 4));
}

else if (packet_id == PAK_CLIENT_CastSpell)
{
printf("Spelling:\n\
spell_id -> %d\n\
target_x_coord -> %d\n\
target_y_coord -> %d\n\
target_unit_id -> %d\n",
read_short(arguments, 0),
read_short(arguments, 2),
read_short(arguments, 4),
read_long(arguments, 6));
}

return (1); // Reinject the packet
}

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