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
|
/*
* active port forwarder - software for secure forwarding
* Copyright (C) 2003-2007 jeremian <jeremian [at] poczta.fm>
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*/
#include <config.h>
#include <assert.h>
#include <string.h>
#include "server_find.h"
/*
* Function name: find_client
* Description: Returns the client number with free user slots.
* Arguments: ptr - the server realm
* mode - the strategy of client choosing
* usrclipair - the number of usrclipair
* Returns: The client number with free user slots.
*/
int
find_client(ServerRealm* ptr, char mode, int usrclipair)
{
int i;
assert(ptr != NULL);
switch(mode) {
case 1: { /* fill first client before go to next */
for (i = 0; i < ServerRealm_get_clientsLimit(ptr); ++i) {
if ((ConnectClient_get_state(ServerRealm_get_clientsTable(ptr)[i]) ==
CONNECTCLIENT_STATE_ACCEPTED) &&
(ConnectClient_get_usrCliPair(ServerRealm_get_clientsTable(ptr)[i]) == usrclipair)) {
if (ConnectClient_get_connected(ServerRealm_get_clientsTable(ptr)[i]) <
ConnectClient_get_limit(ServerRealm_get_clientsTable(ptr)[i])) {
return i;
}
}
}
break;
}
default: {
return 0;
}
}
return 0;
}
/*
* Function name: find_usernum
* Description: Finds the free user slot, fill it and returns its number.
* Arguments: ptr - the connected client
* usernum - the connection number on the afserver
* Returns: The user number in the connected client on the afserver side.
*/
int
find_usernum(ConnectClient* ptr, int usernum)
{
int i;
assert(ptr != NULL);
for (i = 0; i < ConnectClient_get_limit(ptr); ++i) {
if (ConnectClient_get_users(ptr)[i] == -1) {
ConnectClient_get_users(ptr)[i] = usernum;
return i;
}
}
return -1;
}
/*
* Function name: find_previousFd
* Description: Finds the file descriptor bound previously to the given
* host:serv.
* Arguments: table - the table of UsrCli structures
* index - the current index of the search
* host - the name of the host
* serv - the name of the service (port)
* Returns: The previously bound file descriptor.
*/
int
find_previousFd(UsrCli** table, int index, char* host, char* serv)
{
int i;
assert(table != NULL);
assert(index >= 0);
for (i = 0; i < index; ++i) {
if (UsrCli_get_manageHostName(table[i])) {
if (host) {
if (strcmp(UsrCli_get_listenHostName(table[i]), host)) {
continue;
}
}
else {
continue;
}
}
else {
if (host) {
continue;
}
}
if (UsrCli_get_managePortName(table[i])) {
if (serv) {
if (strcmp(UsrCli_get_managePortName(table[i]), serv)) {
continue;
}
}
else {
continue;
}
}
else {
if (serv) {
continue;
}
}
return UsrCli_get_manageFd(table[i]);
}
return -1;
}
|
