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
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
|
/* vmop.c - abstracts an operation (instructed) supported by the
* rsyslog virtual machine
*
* Module begun 2008-02-20 by Rainer Gerhards
*
* Copyright 2007, 2008 Rainer Gerhards and Adiscon GmbH.
*
* This file is part of the rsyslog runtime library.
*
* The rsyslog runtime library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* The rsyslog runtime library 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with the rsyslog runtime library. If not, see <http://www.gnu.org/licenses/>.
*
* A copy of the GPL can be found in the file "COPYING" in this distribution.
* A copy of the LGPL can be found in the file "COPYING.LESSER" in this distribution.
*/
#include "config.h"
#include <stdlib.h>
#include <assert.h>
#include "rsyslog.h"
#include "obj.h"
#include "vmop.h"
/* static data */
DEFobjStaticHelpers
DEFobjCurrIf(var)
/* forward definitions */
static rsRetVal vmopOpcode2Str(vmop_t *pThis, uchar **ppName);
/* Standard-Constructor
*/
BEGINobjConstruct(vmop) /* be sure to specify the object type also in END macro! */
ENDobjConstruct(vmop)
/* ConstructionFinalizer
* rgerhards, 2008-01-09
*/
rsRetVal vmopConstructFinalize(vmop_t __attribute__((unused)) *pThis)
{
DEFiRet;
ISOBJ_TYPE_assert(pThis, vmop);
RETiRet;
}
/* destructor for the vmop object */
BEGINobjDestruct(vmop) /* be sure to specify the object type also in END and CODESTART macros! */
CODESTARTobjDestruct(vmop)
if( pThis->opcode == opcode_PUSHSYSVAR
|| pThis->opcode == opcode_PUSHMSGVAR
|| pThis->opcode == opcode_PUSHCONSTANT) {
if(pThis->operand.pVar != NULL)
var.Destruct(&pThis->operand.pVar);
}
ENDobjDestruct(vmop)
/* DebugPrint support for the vmop object */
BEGINobjDebugPrint(vmop) /* be sure to specify the object type also in END and CODESTART macros! */
uchar *pOpcodeName;
CODESTARTobjDebugPrint(vmop)
vmopOpcode2Str(pThis, &pOpcodeName);
dbgoprint((obj_t*) pThis, "opcode: %d\t(%s), next %p, var in next line\n", (int) pThis->opcode, pOpcodeName,
pThis->pNext);
if(pThis->operand.pVar != NULL)
var.DebugPrint(pThis->operand.pVar);
ENDobjDebugPrint(vmop)
/* set operand (variant case)
* rgerhards, 2008-02-20
*/
static rsRetVal
vmopSetVar(vmop_t *pThis, var_t *pVar)
{
DEFiRet;
ISOBJ_TYPE_assert(pThis, vmop);
ISOBJ_TYPE_assert(pVar, var);
pThis->operand.pVar = pVar;
RETiRet;
}
/* set operation
* rgerhards, 2008-02-20
*/
static rsRetVal
vmopSetOpcode(vmop_t *pThis, opcode_t opcode)
{
DEFiRet;
ISOBJ_TYPE_assert(pThis, vmop);
pThis->opcode = opcode;
RETiRet;
}
/* a way to turn an opcode into a readable string
*/
static rsRetVal
vmopOpcode2Str(vmop_t *pThis, uchar **ppName)
{
DEFiRet;
ISOBJ_TYPE_assert(pThis, vmop);
switch(pThis->opcode) {
case opcode_OR:
*ppName = (uchar*) "or";
break;
case opcode_AND:
*ppName = (uchar*) "and";
break;
case opcode_PLUS:
*ppName = (uchar*) "+";
break;
case opcode_MINUS:
*ppName = (uchar*) "-";
break;
case opcode_TIMES:
*ppName = (uchar*) "*";
break;
case opcode_DIV:
*ppName = (uchar*) "/";
break;
case opcode_MOD:
*ppName = (uchar*) "%";
break;
case opcode_NOT:
*ppName = (uchar*) "not";
break;
case opcode_CMP_EQ:
*ppName = (uchar*) "==";
break;
case opcode_CMP_NEQ:
*ppName = (uchar*) "!=";
break;
case opcode_CMP_LT:
*ppName = (uchar*) "<";
break;
case opcode_CMP_GT:
*ppName = (uchar*) ">";
break;
case opcode_CMP_LTEQ:
*ppName = (uchar*) "<=";
break;
case opcode_CMP_CONTAINS:
*ppName = (uchar*) "contains";
break;
case opcode_CMP_STARTSWITH:
*ppName = (uchar*) "startswith";
break;
case opcode_CMP_GTEQ:
*ppName = (uchar*) ">=";
break;
case opcode_PUSHSYSVAR:
*ppName = (uchar*) "PUSHSYSVAR";
break;
case opcode_PUSHMSGVAR:
*ppName = (uchar*) "PUSHMSGVAR";
break;
case opcode_PUSHCONSTANT:
*ppName = (uchar*) "PUSHCONSTANT";
break;
case opcode_POP:
*ppName = (uchar*) "POP";
break;
case opcode_UNARY_MINUS:
*ppName = (uchar*) "UNARY_MINUS";
break;
case opcode_STRADD:
*ppName = (uchar*) "STRADD";
break;
default:
*ppName = (uchar*) "INVALID opcode";
break;
}
RETiRet;
}
/* queryInterface function
* rgerhards, 2008-02-21
*/
BEGINobjQueryInterface(vmop)
CODESTARTobjQueryInterface(vmop)
if(pIf->ifVersion != vmopCURR_IF_VERSION) { /* check for current version, increment on each change */
ABORT_FINALIZE(RS_RET_INTERFACE_NOT_SUPPORTED);
}
/* ok, we have the right interface, so let's fill it
* Please note that we may also do some backwards-compatibility
* work here (if we can support an older interface version - that,
* of course, also affects the "if" above).
*/
//xxxpIf->oID = OBJvmop;
pIf->Construct = vmopConstruct;
pIf->ConstructFinalize = vmopConstructFinalize;
pIf->Destruct = vmopDestruct;
pIf->DebugPrint = vmopDebugPrint;
pIf->SetOpcode = vmopSetOpcode;
pIf->SetVar = vmopSetVar;
pIf->Opcode2Str = vmopOpcode2Str;
finalize_it:
ENDobjQueryInterface(vmop)
/* Initialize the vmop class. Must be called as the very first method
* before anything else is called inside this class.
* rgerhards, 2008-02-19
*/
BEGINObjClassInit(vmop, 1, OBJ_IS_CORE_MODULE) /* class, version */
/* request objects we use */
CHKiRet(objUse(var, CORE_COMPONENT));
OBJSetMethodHandler(objMethod_DEBUGPRINT, vmopDebugPrint);
OBJSetMethodHandler(objMethod_CONSTRUCTION_FINALIZER, vmopConstructFinalize);
ENDObjClassInit(vmop)
/* vi:set ai:
*/
|
