1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
|
#include "utils.hpp"
#define PORT "4444"
int main(int argc, char** argv);
int connect_to_server(Options* options);
void* packet_recieveing_thread(void* poptions);
void* ping_thread(void* poptions);
int parse_arguments(int argc, char** argv, Options* options);
int print_help();
Options options {};
int main(int argc, char** argv)
{
int status;
char player_name[20] = "Anonymous";
char num[5];
sprintf(num, "%d", (int)(time(0) % 9999));
strncat(player_name, num, sizeof(player_name));
options.server = false;
strncpy(options.port, PORT, sizeof(options.port));
strncpy(options.name, player_name, sizeof(options.name));
options.encryption = false;
strncpy(options.password, DEFAULT_PASS, sizeof(options.password));
status = parse_arguments(argc, argv, &options);
if(status)
{
print_help();
goto end;
}
status = connect_to_server(&options);
if(status)
{
ERROR_LOG("Failed to connect to the server.\n");
goto end;
}
INFO_LOG("Succesfully connected to server.\n");
pthread_t packet_recieveing_thread_id;
pthread_create(&packet_recieveing_thread_id, NULL, packet_recieveing_thread, (void*)&options);
start_client(NULL, &options);
end:
return status;
}
int connect_to_server(Options* options)
{
options->sockfd = socket(AF_INET, SOCK_STREAM, 0);
if(options->sockfd < 0)
return 1;
struct sockaddr_in sockaddr;
sockaddr.sin_family = AF_INET;
sockaddr.sin_addr.s_addr = inet_addr(options->ip);
sockaddr.sin_port = htons(atoi(options->port));
if(connect(options->sockfd, (struct sockaddr*)&sockaddr, sizeof(sockaddr)))
return 2;
Packet packet {};
packet.type = PacketType::packet_connect;
strncpy(packet.data.packet_connect.name, options->name, sizeof(packet.data.packet_connect.name));
packet.data.packet_connect.pass = options->pass;
strncpy(packet.data.packet_connect.password, options->password, sizeof(packet.data.packet_connect.password));
if(send_packet(&packet, &options->sockfd, options, NULL))
return 3;
pthread_t ping_thread_id;
pthread_create(&ping_thread_id, NULL, ping_thread, (void*)options);
return 0;
}
void* packet_recieveing_thread(void* poptions)
{
Options* opt = (Options*)poptions;
Packet incoming_packet {};
int read_size = 0;
while((read_size = recv(opt->sockfd, &incoming_packet, sizeof(incoming_packet), 0)) > 0)
{
int result = handle_incoming_packet(&incoming_packet, &opt->sockfd, NULL, &options);
if(result)
{
ERROR_LOG("Invalid packet recieved.\n");
exit(1);
}
}
return 0;
}
void* ping_thread(void* poptions)
{
Options* opt = (Options*)poptions;
while(1)
{
Packet ping {};
ping.type = PacketType::packet_ping;
strncpy(ping.data.packet_ping.name, opt->name, sizeof(ping.data.packet_ping.name));
if(send_packet(&ping, &opt->sockfd, opt, NULL))
{
ERROR_LOG("Lost connection to server.\n");
exit(1);
}
sleep(2);
}
}
int parse_arguments(int argc, char** argv, Options* options)
{
extern char* optarg;
int status = 0;
bool mand_flag = false;
int option;
while((option = getopt(argc, argv, "i:p:en:x:h")) != -1)
switch(option)
{
case 'i':
strncpy(options->ip, optarg, sizeof(options->ip));
mand_flag = true;
break;
case 'p':
strncpy(options->port, optarg, sizeof(options->port));
break;
case 'e':
options->encryption = true;
break;
case 'n':
strncpy(options->name, optarg, sizeof(options->name));
break;
case 'x':
options->pass = true;
strncpy(options->password, optarg, sizeof(options->password));
break;
case 'h':
print_help();
break;
case ':':
status = 1;
break;
case '?':
status = 1;
break;
}
if(!mand_flag)
{
status = 1;
ERROR_LOG("Needs ip argument (-i IP)\n");
}
return status;
}
int print_help()
{
printf(
"Usage:\n"
"\t./client\n"
"\t\t-i (IP) [ip address]\n"
"\t\t-p (PORT) [port number]\n"
"\t\t-e [encryption]\n"
"\t\t-n (NAME) [username]\n"
"\t\t-x (PASS) [password]\n"
"\t\t-h [show help]\n"
);
return 0;
}
|
