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
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
|
/*
* Unix Socket
* (C) 2004-2010 Jack Lloyd
*
* Released under the terms of the Botan license
*/
#include <botan/unx_sock.h>
#include <botan/exceptn.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <netinet/in.h>
#include <netdb.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
namespace Botan {
/**
* Unix Socket Constructor
*/
Unix_Socket::Unix_Socket(const std::string& host, u16bit port) : peer(host)
{
sockfd = -1;
hostent* host_addr = ::gethostbyname(host.c_str());
if(host_addr == 0)
throw Stream_IO_Error("Unix_Socket: gethostbyname failed for " + host);
if(host_addr->h_addrtype != AF_INET) // FIXME
throw Stream_IO_Error("Unix_Socket: " + host + " has IPv6 address");
int fd = ::socket(PF_INET, SOCK_STREAM, 0);
if(fd == -1)
throw Stream_IO_Error("Unix_Socket: Unable to acquire socket");
sockaddr_in socket_info;
::memset(&socket_info, 0, sizeof(socket_info));
socket_info.sin_family = AF_INET;
socket_info.sin_port = htons(port);
::memcpy(&socket_info.sin_addr,
host_addr->h_addr,
host_addr->h_length);
socket_info.sin_addr = *(struct in_addr*)host_addr->h_addr; // FIXME
if(::connect(fd, (sockaddr*)&socket_info, sizeof(struct sockaddr)) != 0)
{
::close(fd);
throw Stream_IO_Error("Unix_Socket: connect failed");
}
sockfd = fd;
}
/**
* Unix Socket Constructor
*/
Unix_Socket::Unix_Socket(int fd, const std::string& peer_id)
{
sockfd = fd;
peer = peer_id;
}
/**
* Read from a Unix socket
*/
size_t Unix_Socket::read(byte buf[], size_t length)
{
if(sockfd == -1)
throw Stream_IO_Error("Unix_Socket::read: Socket not connected");
size_t got = 0;
while(length)
{
ssize_t this_time = ::recv(sockfd, buf + got, length, MSG_NOSIGNAL);
if(this_time == 0)
break;
if(this_time == -1)
{
if(errno == EINTR)
this_time = 0;
else
throw Stream_IO_Error("Unix_Socket::read: Socket read failed");
}
got += this_time;
length -= this_time;
}
return got;
}
/**
* Write to a Unix socket
*/
void Unix_Socket::write(const byte buf[], size_t length)
{
if(sockfd == -1)
throw Stream_IO_Error("Unix_Socket::write: Socket not connected");
size_t offset = 0;
while(length)
{
ssize_t sent = ::send(sockfd, buf + offset, length, MSG_NOSIGNAL);
if(sent == -1)
{
if(errno == EINTR)
sent = 0;
else
throw Stream_IO_Error("Unix_Socket::write: Socket write failed");
}
offset += sent;
length -= sent;
}
}
/**
* Close a Unix socket
*/
void Unix_Socket::close()
{
if(sockfd != -1)
{
if(::close(sockfd) != 0)
throw Stream_IO_Error("Unix_Socket::close failed");
sockfd = -1;
}
}
/**
* Return the peer's name
*/
std::string Unix_Socket::peer_id() const
{
return peer;
}
/**
* Unix Server Socket Constructor
*/
Unix_Server_Socket::Unix_Server_Socket(u16bit port)
{
sockfd = -1;
int fd = ::socket(PF_INET, SOCK_STREAM, 0);
if(fd == -1)
throw Stream_IO_Error("Unix_Server_Socket: Unable to acquire socket");
sockaddr_in socket_info;
::memset(&socket_info, 0, sizeof(socket_info));
socket_info.sin_family = AF_INET;
socket_info.sin_port = htons(port);
// FIXME: support limiting listeners
socket_info.sin_addr.s_addr = INADDR_ANY;
if(::bind(fd, (sockaddr*)&socket_info, sizeof(struct sockaddr)) != 0)
{
::close(fd);
throw Stream_IO_Error("Unix_Server_Socket: bind failed");
}
if(listen(fd, 100) != 0) // FIXME: totally arbitrary
{
::close(fd);
throw Stream_IO_Error("Unix_Server_Socket: listen failed");
}
sockfd = fd;
}
/**
* Close a Unix socket
*/
void Unix_Server_Socket::close()
{
if(sockfd != -1)
{
if(::close(sockfd) != 0)
throw Stream_IO_Error("Unix_Server_Socket::close failed");
sockfd = -1;
}
}
/**
* Accept a new connection
*/
Socket* Unix_Server_Socket::accept()
{
// FIXME: grab IP of remote side, use gethostbyaddr, store as peer_id
int retval = ::accept(sockfd, 0, 0);
if(retval == -1)
throw Stream_IO_Error("Unix_Server_Socket: accept failed");
return new Unix_Socket(retval);
}
}
|
