1 |
// Copyright (C) 2003 Stephane Thiell |
2 |
// |
3 |
// This file is part of pxyscand (from pxys) |
4 |
// |
5 |
// This program is free software; you can redistribute it and/or |
6 |
// modify it under the terms of the GNU General Public License |
7 |
// as published by the Free Software Foundation; either version 2 |
8 |
// of the License, or (at your option) any later version. |
9 |
// |
10 |
// This program is distributed in the hope that it will be useful, |
11 |
// but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 |
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
13 |
// GNU General Public License for more details. |
14 |
// |
15 |
// You should have received a copy of the GNU General Public License |
16 |
// along with this program; if not, write to the Free Software |
17 |
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
18 |
// |
19 |
#define RCSID "$Id: PXCore.cc,v 1.2 2004/01/02 03:08:16 mbuna Exp $" |
20 |
|
21 |
#ifdef HAVE_CONFIG_H |
22 |
#include "config.h" |
23 |
#endif |
24 |
|
25 |
#include "PXCore.h" |
26 |
#include "PXConfig.h" |
27 |
#include "PXConfigLoader.h" |
28 |
#include "PXScanManager.h" |
29 |
#include "PXServer.h" |
30 |
#include <fstream> |
31 |
#include <iostream> |
32 |
#include <cstdlib> |
33 |
#ifdef HAVE_SIGNAL_H |
34 |
#include <signal.h> |
35 |
#endif |
36 |
|
37 |
using std::clog; |
38 |
using std::endl; |
39 |
|
40 |
enum { |
41 |
OPT_FORK = 1 << 0, |
42 |
OPT_CHKCFG = 1 << 1, |
43 |
OPT_DLMAX = 1 << 2 |
44 |
}; |
45 |
|
46 |
PXCore::PXCore(int argc, char *argv[]) |
47 |
{ |
48 |
this->ParseArguments(argc, argv); |
49 |
|
50 |
// Pre fork |
51 |
if ((mOptions & OPT_FORK) && fork()) |
52 |
exit(0); |
53 |
|
54 |
mBirthTime = time(0); |
55 |
srand((unsigned int)mBirthTime ^ getpid()); |
56 |
|
57 |
try |
58 |
{ |
59 |
PXConfigLoader *cfgLoader = new PXConfigLoader(mConfigFile); |
60 |
mConfig = cfgLoader->Load(); |
61 |
} |
62 |
catch (PXXMLException &e) |
63 |
{ |
64 |
clog << "Failed to load configuration file \"" << mConfigFile |
65 |
<< "\":" << endl; |
66 |
clog << e.GetErrorString() << " - hint: " << e.GetHint() << endl; |
67 |
exit(EXIT_FAILURE); |
68 |
} |
69 |
|
70 |
this->SetMaxFDs(); |
71 |
} |
72 |
|
73 |
PXCore::~PXCore() |
74 |
{ |
75 |
free(mConfigFile); |
76 |
} |
77 |
|
78 |
void |
79 |
PXCore::ParseArguments(int argc, char *argv[]) |
80 |
{ |
81 |
extern char *optarg; |
82 |
int c, options = OPT_FORK; /* default */ |
83 |
|
84 |
while ((c = getopt(argc, argv, "cdf:tv")) != -1) |
85 |
{ |
86 |
switch (c) |
87 |
{ |
88 |
case 'c': |
89 |
options = (options | OPT_CHKCFG) & ~OPT_FORK; |
90 |
break; |
91 |
case 'd': |
92 |
options |= OPT_DLMAX; |
93 |
break; |
94 |
case 'f': |
95 |
mConfigFile = strdup(optarg); |
96 |
break; |
97 |
case 't': |
98 |
options &= ~OPT_FORK; |
99 |
break; |
100 |
case 'v': |
101 |
DisplayVersion(); |
102 |
break; |
103 |
case '?': |
104 |
default: |
105 |
DisplayUsage(); |
106 |
break; |
107 |
} |
108 |
} |
109 |
|
110 |
if (!mConfigFile) |
111 |
DisplayUsage(); |
112 |
|
113 |
mOptions = options; |
114 |
} |
115 |
|
116 |
void |
117 |
PXCore::SetMaxFDs() |
118 |
{ |
119 |
int val = mConfig->scanner.maxscans + MAX_SESSIONS; |
120 |
if (peak_task_set_info(peak_task_self(), PEAK_TASK_FLAVOR_MAXFDS, &val) != 0) |
121 |
{ |
122 |
clog << "PXCore::SetMaxFDs: failed to set PEAK_TASK_FLAVOR_MAXFDS" << endl; |
123 |
clog << "Maybe reduce <maxscans> ?" << endl; |
124 |
exit(1); |
125 |
} |
126 |
} |
127 |
|
128 |
int |
129 |
PXCore::Start() |
130 |
{ |
131 |
if (mOptions & OPT_CHKCFG) |
132 |
{ |
133 |
PXConfigLoader::Dump(mConfig); |
134 |
return EXIT_SUCCESS; |
135 |
} |
136 |
|
137 |
this->InitializeSignals(); |
138 |
this->LogPID(); |
139 |
|
140 |
mScanManager = new PXScanManager(mConfig); |
141 |
|
142 |
mServer = new PXServer(mConfig, mScanManager, this); |
143 |
if (mServer->Start() != 0) |
144 |
return EXIT_FAILURE; |
145 |
|
146 |
// Finish daemonize |
147 |
if (mOptions & OPT_FORK) |
148 |
{ |
149 |
close(STDOUT_FILENO); |
150 |
close(STDIN_FILENO); |
151 |
close(STDERR_FILENO); |
152 |
setsid(); |
153 |
} |
154 |
|
155 |
// And run ! |
156 |
peak_task_run(peak_task_self()); |
157 |
return 0; |
158 |
} |
159 |
|
160 |
void |
161 |
PXCore::Stop() |
162 |
{ |
163 |
mServer->Rehash(); // Save caches |
164 |
peak_task_break(peak_task_self()); |
165 |
} |
166 |
|
167 |
void |
168 |
PXCore::InitializeSignals() |
169 |
{ |
170 |
int sn[3] = { SIGHUP, SIGINT, SIGTERM }; |
171 |
|
172 |
for (int i = 0; i < 3; i++) |
173 |
peak_signal_schedule(peak_signal_create(sn[i], SignalsCallback, this), |
174 |
peak_task_self()); |
175 |
|
176 |
peak_signal_ignore(SIGPIPE); |
177 |
} |
178 |
|
179 |
void |
180 |
PXCore::SignalsCallback(peak_signal s, int sig, void *context) |
181 |
{ |
182 |
PXCore *core = (PXCore *)context; |
183 |
|
184 |
peak_task_exclusivity(); |
185 |
|
186 |
switch (sig) |
187 |
{ |
188 |
case SIGHUP: |
189 |
core->mServer->Rehash(); // Save caches |
190 |
// TODO: reload conf |
191 |
break; |
192 |
case SIGINT: |
193 |
if (core->mOptions & OPT_FORK) |
194 |
{ |
195 |
clog << "Received SIGINT. Use SIGTERM to terminate pxyscand." << endl; |
196 |
break; |
197 |
} |
198 |
case SIGTERM: |
199 |
core->Stop(); |
200 |
break; |
201 |
} |
202 |
} |
203 |
|
204 |
void |
205 |
PXCore::DisplayUsage() const |
206 |
{ |
207 |
clog << "*** Usage: pxyscand [-ctv] -f <config_file>" << endl; |
208 |
clog << "*** -c check configuration file" << endl; |
209 |
clog << "*** -t run in foreground" << endl; |
210 |
clog << "*** -v show version and exit" << endl; |
211 |
exit(EXIT_FAILURE); |
212 |
} |
213 |
|
214 |
void |
215 |
PXCore::DisplayVersion() const |
216 |
{ |
217 |
clog << "*** pxyscand " << VERSION << endl; // TODO |
218 |
clog << "*** Part of pxys v.2 software suite" << endl; |
219 |
clog << "*** " << RCSID << endl; |
220 |
exit(EXIT_SUCCESS); |
221 |
} |
222 |
|
223 |
void |
224 |
PXCore::LogPID() const |
225 |
{ |
226 |
std::ofstream f("pxyscand.pid"); |
227 |
if (f) |
228 |
f << (int)getpid() << endl; |
229 |
else |
230 |
clog << "PXCore::LogPID: pid file open failure" << endl; |
231 |
} |