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
|
/*
* Copyright (C) 1998 Michael R. Elkins <me@cs.hmc.edu>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "mutt.h"
#include "globals.h"
#include "mutt_socket.h"
#include <unistd.h>
#include <netinet/in.h>
#include <netdb.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
/* support for multiple socket connections */
static CONNECTION *Connections = NULL;
static int NumConnections = 0;
/* simple read buffering to speed things up. */
int mutt_socket_readchar (CONNECTION *conn, char *c)
{
if (conn->bufpos >= conn->available)
{
conn->available = read (conn->fd, conn->inbuf, LONG_STRING);
dprint (1, (debugfile, "mutt_socket_readchar(): buffered %d chars\n", conn->available));
conn->bufpos = 0;
if (conn->available <= 0)
return conn->available; /* returns 0 for EOF or -1 for other error */
}
*c = conn->inbuf[conn->bufpos];
conn->bufpos++;
return 1;
}
int mutt_socket_read_line (char *buf, size_t buflen, CONNECTION *conn)
{
char ch;
int i;
for (i = 0; i < buflen; i++)
{
if (mutt_socket_readchar (conn, &ch) != 1)
return (-1);
if (ch == '\n')
break;
buf[i] = ch;
}
buf[i-1] = 0;
return (i + 1);
}
int mutt_socket_read_line_d (char *buf, size_t buflen, CONNECTION *conn)
{
int r = mutt_socket_read_line (buf, buflen, conn);
dprint (1,(debugfile,"mutt_socket_read_line_d():%s\n", buf));
return r;
}
int mutt_socket_write (CONNECTION *conn, const char *buf)
{
dprint (1,(debugfile,"mutt_socket_write():%s", buf));
return (write (conn->fd, buf, strlen (buf)));
}
CONNECTION *mutt_socket_select_connection (char *host, int port, int flags)
{
int x;
if (flags != M_NEW_SOCKET)
{
for (x = 0; x < NumConnections; x++)
{
if (!strcmp (host, Connections[x].server) &&
(port == Connections[x].port))
return &Connections[x];
}
}
if (NumConnections == 0)
{
NumConnections = 1;
Connections = (CONNECTION *) safe_malloc (sizeof (CONNECTION));
}
else
{
NumConnections++;
safe_realloc ((void *)&Connections, sizeof (CONNECTION) * NumConnections);
}
Connections[NumConnections - 1].bufpos = 0;
Connections[NumConnections - 1].available = 0;
Connections[NumConnections - 1].uses = 0;
Connections[NumConnections - 1].server = safe_strdup (host);
Connections[NumConnections - 1].port = port;
return &Connections[NumConnections - 1];
}
|
