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
|
/* imrelp.c
*
* This is the implementation of the RELP input module.
*
* File begun on 2008-03-13 by RGerhards
*
* Copyright 2008 Rainer Gerhards and Adiscon GmbH.
*
* This file is part of rsyslog.
*
* Rsyslog 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 3 of the License, or
* (at your option) any later version.
*
* Rsyslog 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 Rsyslog. If not, see <http://www.gnu.org/licenses/>.
*
* A copy of the GPL can be found in the file "COPYING" in this distribution.
*/
#include "config.h"
#include <stdlib.h>
#include <assert.h>
#include <string.h>
#include <errno.h>
#include <unistd.h>
#include <stdarg.h>
#include <ctype.h>
#include <netinet/in.h>
#include <netdb.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <librelp.h>
#include "rsyslog.h"
#include "syslogd.h"
#include "cfsysline.h"
#include "module-template.h"
#include "net.h"
MODULE_TYPE_INPUT
/* static data */
DEF_IMOD_STATIC_DATA
DEFobjCurrIf(net)
/* Module static data */
static relpEngine_t *pRelpEngine; /* our relp engine */
/* config settings */
static int iTCPSessMax = 200; /* max number of sessions */
/* ------------------------------ callbacks ------------------------------ */
#if 0
/* this shall go into a specific ACL module! */
static int
isPermittedHost(struct sockaddr *addr, char *fromHostFQDN, void __attribute__((unused)) *pUsrSrv,
void __attribute__((unused)) *pUsrSess)
{
return net.isAllowedSender(net.pAllowedSenders_TCP, addr, fromHostFQDN);
}
#endif // #if 0
/* callback for receiving syslog messages. This function is invoked from the
* RELP engine when a syslog message arrived. It must return a relpRetVal,
* with anything else but RELP_RET_OK terminating the relp session. Please note
* that RELP_RET_OK is equal to RS_RET_OK and the other libRELP error codes
* are different from our rsRetVal. So we can simply use our own iRet system
* to fulfill the requirement.
* rgerhards, 2008-03-21
*/
static relpRetVal
onSyslogRcv(uchar *pHostname, uchar __attribute__((unused)) *pIP, uchar *pMsg, size_t lenMsg)
{
DEFiRet;
parseAndSubmitMessage((char*)pHostname, (char*)pMsg, lenMsg, MSG_PARSE_HOSTNAME,
NOFLAG, eFLOWCTL_LIGHT_DELAY);
RETiRet;
}
/* ------------------------------ end callbacks ------------------------------ */
static rsRetVal addListener(void __attribute__((unused)) *pVal, uchar *pNewVal)
{
DEFiRet;
if(pRelpEngine == NULL) {
CHKiRet(relpEngineConstruct(&pRelpEngine));
CHKiRet(relpEngineSetDbgprint(pRelpEngine, dbgprintf));
CHKiRet(relpEngineSetEnableCmd(pRelpEngine, (uchar*) "syslog", eRelpCmdState_Required));
CHKiRet(relpEngineSetSyslogRcv(pRelpEngine, onSyslogRcv));
}
CHKiRet(relpEngineAddListner(pRelpEngine, pNewVal));
free(pNewVal); /* we do no longer need it */
finalize_it:
RETiRet;
}
/* This function is called to gather input.
*/
BEGINrunInput
CODESTARTrunInput
/* TODO: we must be careful to start the listener here. Currently, tcpsrv.c seems to
* do that in ConstructFinalize
*/
iRet = relpEngineRun(pRelpEngine);
ENDrunInput
/* initialize and return if will run or not */
BEGINwillRun
CODESTARTwillRun
/* first apply some config settings */
//net.PrintAllowedSenders(2); /* TCP */
if(pRelpEngine == NULL)
ABORT_FINALIZE(RS_RET_NO_RUN);
finalize_it:
ENDwillRun
BEGINafterRun
CODESTARTafterRun
/* do cleanup here */
#if 0
if(net.pAllowedSenders_TCP != NULL) {
net.clearAllowedSenders(net.pAllowedSenders_TCP);
net.pAllowedSenders_TCP = NULL;
}
#endif
ENDafterRun
BEGINmodExit
CODESTARTmodExit
if(pRelpEngine != NULL)
iRet = relpEngineDestruct(&pRelpEngine);
/* release objects we used */
objRelease(net, LM_NET_FILENAME);
ENDmodExit
static rsRetVal
resetConfigVariables(uchar __attribute__((unused)) *pp, void __attribute__((unused)) *pVal)
{
iTCPSessMax = 200;
return RS_RET_OK;
}
BEGINqueryEtryPt
CODESTARTqueryEtryPt
CODEqueryEtryPt_STD_IMOD_QUERIES
ENDqueryEtryPt
BEGINmodInit()
CODESTARTmodInit
*ipIFVersProvided = CURR_MOD_IF_VERSION; /* we only support the current interface specification */
CODEmodInit_QueryRegCFSLineHdlr
pRelpEngine = NULL;
/* request objects we use */
CHKiRet(objUse(net, LM_NET_FILENAME));
/* register config file handlers */
CHKiRet(omsdRegCFSLineHdlr((uchar *)"inputrelpserverrun", 0, eCmdHdlrGetWord,
addListener, NULL, STD_LOADABLE_MODULE_ID));
CHKiRet(omsdRegCFSLineHdlr((uchar *)"inputrelpmaxsessions", 0, eCmdHdlrInt,
NULL, &iTCPSessMax, STD_LOADABLE_MODULE_ID));
CHKiRet(omsdRegCFSLineHdlr((uchar *)"resetconfigvariables", 1, eCmdHdlrCustomHandler,
resetConfigVariables, NULL, STD_LOADABLE_MODULE_ID));
ENDmodInit
/* vim:set ai:
*/
|
