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
|
/*
$Header: socketp.c[1.4] Sun Aug 9 03:48:03 1992 nickel@cs.tu-berlin.de proposed $
This file is part of socket(1).
Copyright (C) 1992 by Juergen Nickelsen <nickel@cs.tu-berlin.de>
Please read the file COPYRIGHT for further details.
*/
#ifdef __linux__
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <arpa/inet.h>
#endif
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/errno.h>
#include <sys/un.h>
#include <sys/stat.h>
#include <netinet/in.h>
#include <netdb.h>
#include <stdio.h>
#include "globals.h"
#include <stdint.h> // debfix
#ifndef UNIX_PATH_MAX
#define UNIX_PATH_MAX 108
#endif
/*
* create an INET server socket on PORT accepting QUEUE_LENGTH connections
*/
int create_server_socket_inet(local_ip, port, queue_length)
long int local_ip ;
int port ;
int queue_length ;
{
struct sockaddr_in sa ;
int s;
if ((s = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
return -1 ;
}
bzero((char *) &sa, sizeof(sa)) ;
sa.sin_family = AF_INET ;
if (local_ip)
sa.sin_addr.s_addr = local_ip;
else
sa.sin_addr.s_addr = htonl(INADDR_ANY) ;
sa.sin_port = htons(port) ;
if (bind(s, (struct sockaddr *) &sa, sizeof(sa)) < 0) {
return -1 ;
}
if (listen(s, queue_length) < 0) {
return -1 ;
}
return s ;
}
/*
* create a UNIX server socket bound to PATH accepting QUEUE_LENGTH connections
*/
int create_server_socket_unix(pathname, queue_length)
char *pathname;
int queue_length ;
{
struct sockaddr_un su ;
int s;
struct stat st;
if ((s = socket(PF_UNIX, SOCK_STREAM, 0)) < 0) {
return -1 ;
}
bzero((char *) &su, sizeof(su)) ;
su.sun_family = AF_UNIX ;
strncpy(su.sun_path,pathname,UNIX_PATH_MAX);
su.sun_path[UNIX_PATH_MAX-1]=0;
if ( ! stat(su.sun_path,&st) && S_ISSOCK(st.st_mode) )
unlink(su.sun_path);
if (bind(s, (struct sockaddr *) &su, sizeof(su)) < 0) {
return -1 ;
}
if (listen(s, queue_length) < 0) {
return -1 ;
}
return s ;
}
/* create a client socket connected to PORT on HOSTNAME */
int create_client_socket_inet(local_ip,hostname, port)
long int local_ip ;
char **hostname ;
int port ;
{
struct sockaddr_in sa ;
struct hostent *hp ;
int s ;
// debfix long addr ;
uint32_t addr ;
bzero(&sa, sizeof(sa)) ;
if ((addr = inet_addr(*hostname)) != -1) {
/* is Internet addr in octet notation */
bcopy(&addr, (char *) &sa.sin_addr, sizeof(addr)) ; /* set address */
sa.sin_family = AF_INET ;
} else {
/* do we know the host's address? */
if ((hp = gethostbyname(*hostname)) == NULL) {
return -2 ;
}
*hostname = hp->h_name ;
bcopy(hp->h_addr, (char *) &sa.sin_addr, hp->h_length) ;
sa.sin_family = hp->h_addrtype ;
}
sa.sin_port = htons((u_short) port) ;
if ((s = socket(sa.sin_family, SOCK_STREAM, 0)) < 0) { /* get socket */
return -1 ;
}
if (local_ip) {
struct sockaddr_in direc;
bzero(&direc,sizeof(direc));
direc.sin_addr.s_addr=local_ip;
direc.sin_family=AF_INET;
bind(s,(struct sockaddr *)&direc,sizeof(direc));
}
if (connect(s, (struct sockaddr *) &sa, sizeof(sa)) < 0) { /* connect */
close(s) ;
return -1 ;
}
return s ;
}
/* create a client socket connected to UNIX domain socket "pathname" */
int create_client_socket_unix(pathname)
char *pathname ;
{
struct sockaddr_un su ;
int s ;
su.sun_family=AF_UNIX;
strncpy(su.sun_path,pathname,UNIX_PATH_MAX);
su.sun_path[UNIX_PATH_MAX-1]=0;
if ((s = socket(PF_UNIX, SOCK_STREAM, 0)) < 0) { /* get socket */
return -1 ;
}
if (connect(s, (struct sockaddr *) &su, sizeof(su)) < 0) { /* connect */
close(s) ;
return -1 ;
}
return s ;
}
/* return the port number for service NAME_OR_NUMBER. If NAME is non-null,
* the name is the service is written there.
*/
int resolve_service(name_or_number, protocol, name)
char *name_or_number ;
char *protocol ;
char **name ;
{
struct servent *servent ;
int port ;
if (is_number(name_or_number)) {
port = atoi(name_or_number) ;
if (name != NULL) {
servent = getservbyport(htons(port), "tcp") ;
if (servent != NULL) {
*name = servent->s_name ;
} else {
*name = NULL ;
}
}
return port ;
} else {
servent = getservbyname(name_or_number, "tcp") ;
if (servent == NULL) {
return -1 ;
}
if (name != NULL) {
*name = servent->s_name ;
}
return ntohs(servent->s_port) ;
}
}
/*EOF*/
|
