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comparison mcabber/libjabber/socket.c @ 25:bf3d6e241714

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[/trunk] Changeset 41 by mikael * Add libjabber to trunk. Let the game begin! :-)
author mikael
date Sun, 27 Mar 2005 20:18:21 +0000
parents
children c3ae9251c197
comparison
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24:e88b15cbf2de 25:bf3d6e241714
1 /*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License as published by
4 * the Free Software Foundation; either version 2 of the License, or
5 * (at your option) any later version.
6 *
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
11 *
12 * You should have received a copy of the GNU General Public License
13 * along with this program; if not, write to the Free Software
14 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
15 *
16 * Jabber
17 * Copyright (C) 1998-1999 The Jabber Team http://jabber.org/
18 */
19
20 #include "libxode.h"
21 #include "connwrap.h"
22
23 /* socket.c
24 *
25 * Simple wrapper to make socket creation easy.
26 * type = NETSOCKET_SERVER is local listening socket
27 * type = NETSOCKET_CLIENT is connection socket
28 * type = NETSOCKET_UDP
29 */
30
31 int make_netsocket(u_short port, char *host, int type, int ssl)
32 {
33 int s, flag = 1;
34 struct sockaddr_in sa;
35 struct in_addr *saddr;
36 int socket_type;
37
38 /* is this a UDP socket or a TCP socket? */
39 socket_type = (type == NETSOCKET_UDP)?SOCK_DGRAM:SOCK_STREAM;
40
41 bzero((void *)&sa,sizeof(struct sockaddr_in));
42
43 if((s = socket(AF_INET,socket_type,0)) < 0)
44 return(-1);
45 if(setsockopt(s, SOL_SOCKET, SO_REUSEADDR, (char*)&flag, sizeof(flag)) < 0)
46 return(-1);
47
48 saddr = make_addr(host);
49 if(saddr == NULL)
50 return(-1);
51 sa.sin_family = AF_INET;
52 sa.sin_port = htons(port);
53
54 if(type == NETSOCKET_SERVER)
55 {
56 /* bind to specific address if specified */
57 if(host != NULL)
58 sa.sin_addr.s_addr = saddr->s_addr;
59
60 if(bind(s,(struct sockaddr*)&sa,sizeof sa) < 0)
61 {
62 close(s);
63 return(-1);
64 }
65 }
66 if(type == NETSOCKET_CLIENT)
67 {
68 sa.sin_addr.s_addr = saddr->s_addr;
69 if(cw_connect(s,(struct sockaddr*)&sa,sizeof sa,ssl) < 0)
70 {
71 close(s);
72 return(-1);
73 }
74 }
75 if(type == NETSOCKET_UDP)
76 {
77 /* bind to all addresses for now */
78 if(bind(s,(struct sockaddr*)&sa,sizeof sa) < 0)
79 {
80 close(s);
81 return(-1);
82 }
83
84 /* specify default recipient for read/write */
85 sa.sin_addr.s_addr = saddr->s_addr;
86 if(cw_connect(s,(struct sockaddr*)&sa,sizeof sa,ssl) < 0)
87 {
88 close(s);
89 return(-1);
90 }
91 }
92
93
94 return(s);
95 }
96
97 void change_socket_to_blocking(int s)
98 /* make socket blocking */
99 {
100 int val;
101 val = fcntl(s, F_GETFL, 0);
102 fcntl(s, F_SETFL, val & (~O_NONBLOCK));
103 }
104
105 void change_socket_to_nonblocking(int s)
106 /* make socket non-blocking */
107 {
108 int val;
109 val = fcntl(s, F_GETFL, 0);
110 fcntl(s, F_SETFL, val | O_NONBLOCK);
111 }
112
113 /* socket.c
114 *
115 * Simple wrapper to make non-blocking client socket creation easy.
116 * type = NETSOCKET_SERVER is local listening socket
117 * type = NETSOCKET_CLIENT is connection socket
118 * type = NETSOCKET_UDP
119 */
120
121 int make_nb_netsocket(u_short port, char *host, int type, int ssl, int* state)
122 {
123 int s, flag = 1;
124 struct sockaddr_in sa;
125 struct in_addr *saddr;
126 int socket_type;
127
128 /* is this a UDP socket or a TCP socket? */
129 socket_type = (type == NETSOCKET_UDP)?SOCK_DGRAM:SOCK_STREAM;
130
131 bzero((void *)&sa,sizeof(struct sockaddr_in));
132
133 if((s = socket(AF_INET,socket_type,0)) < 0)
134 return(-1);
135 if(setsockopt(s, SOL_SOCKET, SO_REUSEADDR, (char*)&flag, sizeof(flag)) < 0)
136 return(-1);
137 change_socket_to_nonblocking(s);
138
139 saddr = make_addr(host);
140 if(saddr == NULL)
141 return(-1);
142 sa.sin_family = AF_INET;
143 sa.sin_port = htons(port);
144
145 if(type == NETSOCKET_SERVER)
146 {
147 /* bind to specific address if specified */
148 if(host != NULL)
149 sa.sin_addr.s_addr = saddr->s_addr;
150
151 if(bind(s,(struct sockaddr*)&sa,sizeof sa) < 0)
152 {
153 close(s);
154 return(-1);
155 }
156 }
157 if(type == NETSOCKET_CLIENT)
158 {
159 int rc;
160 sa.sin_addr.s_addr = saddr->s_addr;
161 rc = cw_nb_connect(s,(struct sockaddr*)&sa,sizeof sa,ssl, state);
162 if (rc == -1 )
163 {
164 close(s);
165 return(-1);
166 }
167 }
168 if(type == NETSOCKET_UDP)
169 {
170 /* bind to all addresses for now */
171 if(bind(s,(struct sockaddr*)&sa,sizeof sa) < 0)
172 {
173 close(s);
174 return(-1);
175 }
176
177 /* specify default recipient for read/write */
178 sa.sin_addr.s_addr = saddr->s_addr;
179 if(cw_connect(s,(struct sockaddr*)&sa,sizeof sa,ssl) < 0)
180 {
181 close(s);
182 return(-1);
183 }
184 }
185
186
187 return(s);
188 }
189
190 struct in_addr *make_addr(char *host)
191 {
192 struct hostent *hp;
193 static struct in_addr addr;
194 char myname[MAXHOSTNAMELEN + 1];
195
196 if(host == NULL || strlen(host) == 0)
197 {
198 gethostname(myname,MAXHOSTNAMELEN);
199 hp = gethostbyname(myname);
200 if(hp != NULL)
201 {
202 return (struct in_addr *) *hp->h_addr_list;
203 }
204 }else{
205 addr.s_addr = inet_addr(host);
206 if(addr.s_addr != -1)
207 {
208 return &addr;
209 }
210 hp = gethostbyname(host);
211 if(hp != NULL)
212 {
213 return (struct in_addr *) *hp->h_addr_list;
214 }
215 }
216 return NULL;
217 }
218
219 /* Sets a file descriptor to close on exec. "flag" is 1 to close on exec, 0 to
220 * leave open across exec.
221 * -- EJB 7/31/2000
222 */
223 int set_fd_close_on_exec(int fd, int flag)
224 {
225 int oldflags = fcntl(fd,F_GETFL);
226 int newflags;
227
228 if(flag)
229 newflags = oldflags | FD_CLOEXEC;
230 else
231 newflags = oldflags & (~FD_CLOEXEC);
232
233 if(newflags==oldflags)
234 return 0;
235 return fcntl(fd,F_SETFL,(long)newflags);
236 }
237