-rw-r--r-- | src/dudki.cc | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/src/dudki.cc b/src/dudki.cc index e91ad5e..9562079 100644 --- a/src/dudki.cc +++ b/src/dudki.cc | |||
@@ -1,35 +1,36 @@ | |||
1 | #include <unistd.h> | 1 | #include <unistd.h> |
2 | #include <signal.h> | 2 | #include <signal.h> |
3 | #include <syslog.h> | 3 | #include <syslog.h> |
4 | #include <errno.h> | ||
4 | #include <iostream> | 5 | #include <iostream> |
5 | #include <fstream> | 6 | #include <fstream> |
6 | #include <stdexcept> | 7 | #include <stdexcept> |
7 | using namespace std; | 8 | using namespace std; |
8 | #include "configuration.h" | 9 | #include "configuration.h" |
9 | #include "util.h" | 10 | #include "util.h" |
10 | 11 | ||
11 | #include "config.h" | 12 | #include "config.h" |
12 | #ifdef HAVE_GETOPT_H | 13 | #ifdef HAVE_GETOPT_H |
13 | # include <getopt.h> | 14 | # include <getopt.h> |
14 | #endif | 15 | #endif |
15 | 16 | ||
16 | #ifndef DEFAULT_CONF_FILE | 17 | #ifndef DEFAULT_CONF_FILE |
17 | # define DEFAULT_CONF_FILE "/etc/dudki.conf" | 18 | # define DEFAULT_CONF_FILE "/etc/dudki.conf" |
18 | #endif | 19 | #endif |
19 | 20 | ||
20 | #define PHEADER PACKAGE " Version " VERSION | 21 | #define PHEADER PACKAGE " Version " VERSION |
21 | #define PCOPY "Copyright (c) 2004 Klever Group" | 22 | #define PCOPY "Copyright (c) 2004 Klever Group" |
22 | 23 | ||
23 | bool finishing = false; | 24 | bool finishing = false; |
24 | bool restarting = false; | 25 | bool restarting = false; |
25 | static char **_argv = NULL; | 26 | static char **_argv = NULL; |
26 | 27 | ||
27 | static void lethal_signal_handler(int signum) { | 28 | static void lethal_signal_handler(int signum) { |
28 | syslog(LOG_NOTICE,"Lethal signal received. Terminating."); | 29 | syslog(LOG_NOTICE,"Lethal signal received. Terminating."); |
29 | finishing = true; | 30 | finishing = true; |
30 | } | 31 | } |
31 | static void sighup_handler(int signum) { | 32 | static void sighup_handler(int signum) { |
32 | syslog(LOG_NOTICE,"SUGHUP received, reloading."); | 33 | syslog(LOG_NOTICE,"SUGHUP received, reloading."); |
33 | restarting = finishing = true; | 34 | restarting = finishing = true; |
34 | } | 35 | } |
35 | 36 | ||
@@ -39,169 +40,186 @@ void check_herd(configuration& config) { | |||
39 | } | 40 | } |
40 | 41 | ||
41 | void signal_self(const configuration& config,int signum) { | 42 | void signal_self(const configuration& config,int signum) { |
42 | ifstream pids(config.pidfile.c_str(),ios::in); | 43 | ifstream pids(config.pidfile.c_str(),ios::in); |
43 | if(!pids) | 44 | if(!pids) |
44 | throw runtime_error("Can't detect running instance"); | 45 | throw runtime_error("Can't detect running instance"); |
45 | pid_t pid = 0; | 46 | pid_t pid = 0; |
46 | pids >> pid; | 47 | pids >> pid; |
47 | if(!pid) | 48 | if(!pid) |
48 | throw runtime_error("Can't detect running instance"); | 49 | throw runtime_error("Can't detect running instance"); |
49 | if(pid==getpid()) | 50 | if(pid==getpid()) |
50 | throw 0; | 51 | throw 0; |
51 | if(kill(pid,signum)) | 52 | if(kill(pid,signum)) |
52 | throw runtime_error("Failed to signal running instance"); | 53 | throw runtime_error("Failed to signal running instance"); |
53 | } | 54 | } |
54 | 55 | ||
55 | int main(int argc,char **argv) { | 56 | int main(int argc,char **argv) { |
56 | try { | 57 | try { |
57 | _argv = new char*[argc+1]; | 58 | _argv = new char*[argc+1]; |
58 | if(!_argv) | 59 | if(!_argv) |
59 | throw runtime_error("memory allocation problem at the very start"); | 60 | throw runtime_error("memory allocation problem at the very start"); |
60 | memmove(_argv,argv,sizeof(*_argv)*(argc+1)); | 61 | memmove(_argv,argv,sizeof(*_argv)*(argc+1)); |
61 | string config_file = DEFAULT_CONF_FILE; | 62 | string config_file = DEFAULT_CONF_FILE; |
62 | enum { | 63 | enum { |
63 | op_default, | 64 | op_default, |
64 | op_work, | 65 | op_work, |
65 | op_signal, | 66 | op_signal, |
66 | op_ensure, | 67 | op_ensure, |
67 | op_test | 68 | op_test |
68 | } op = op_default; | 69 | } op = op_default; |
69 | int op_signum = 0; | 70 | int op_signum = 0; |
70 | while(true) { | 71 | while(true) { |
71 | #defineSHORTOPTSTRING "f:hVLrkcet" | 72 | #defineSHORTOPTSTRING "f:hVLrkcets:" |
72 | #ifdef HAVE_GETOPT_LONG | 73 | #ifdef HAVE_GETOPT_LONG |
73 | static struct option opts[] = { | 74 | static struct option opts[] = { |
74 | { "help", no_argument, 0, 'h' }, | 75 | { "help", no_argument, 0, 'h' }, |
75 | { "usage", no_argument, 0, 'h' }, | 76 | { "usage", no_argument, 0, 'h' }, |
76 | { "version", no_argument, 0, 'V' }, | 77 | { "version", no_argument, 0, 'V' }, |
77 | { "license", no_argument, 0, 'L' }, | 78 | { "license", no_argument, 0, 'L' }, |
78 | { "config", required_argument, 0, 'f' }, | 79 | { "config", required_argument, 0, 'f' }, |
79 | { "kill", no_argument, 0, 'k' }, | 80 | { "kill", no_argument, 0, 'k' }, |
80 | { "reload", no_argument, 0, 'r' }, | 81 | { "reload", no_argument, 0, 'r' }, |
82 | { "signal", required_argument, 0, 's' }, | ||
81 | { "check", no_argument, 0, 'c' }, | 83 | { "check", no_argument, 0, 'c' }, |
82 | { "ensure", no_argument, 0, 'e' }, | 84 | { "ensure", no_argument, 0, 'e' }, |
83 | { "test", no_argument, 0, 't' }, | 85 | { "test", no_argument, 0, 't' }, |
84 | { NULL, 0, 0, 0 } | 86 | { NULL, 0, 0, 0 } |
85 | }; | 87 | }; |
86 | int c = getopt_long(argc,argv,SHORTOPTSTRING,opts,NULL); | 88 | int c = getopt_long(argc,argv,SHORTOPTSTRING,opts,NULL); |
87 | #else /* !HAVE_GETOPT_LONG */ | 89 | #else /* !HAVE_GETOPT_LONG */ |
88 | int c = getopt(argc,argv,SHORTOPTSTRING); | 90 | int c = getopt(argc,argv,SHORTOPTSTRING); |
89 | #endif /* /HAVE_GETOPT_LONG */ | 91 | #endif /* /HAVE_GETOPT_LONG */ |
90 | if(c==-1) | 92 | if(c==-1) |
91 | break; | 93 | break; |
92 | switch(c) { | 94 | switch(c) { |
93 | case 'h': | 95 | case 'h': |
94 | cerr << PHEADER << endl | 96 | cerr << PHEADER << endl |
95 | << PCOPY << endl << endl | 97 | << PCOPY << endl << endl |
96 | << " " << argv[0] << " [options] [processes]" << endl << endl << | 98 | << " " << argv[0] << " [options] [processes]" << endl << endl << |
97 | #ifdef HAVE_GETOPT_LONG | 99 | #ifdef HAVE_GETOPT_LONG |
98 | " -h, --help\n" | 100 | " -h, --help\n" |
99 | " --usage display this text\n" | 101 | " --usage display this text\n" |
100 | " -V, --version display version number\n" | 102 | " -V, --version display version number\n" |
101 | " -L, --license show license\n" | 103 | " -L, --license show license\n" |
102 | " -f filename, --config=filename\n" | 104 | " -f filename, --config=filename\n" |
103 | " specify the configuration file to use\n" | 105 | " specify the configuration file to use\n" |
104 | "\n" | 106 | "\n" |
105 | " -k, --kill stop running instance (send SIGTERM)\n" | 107 | " -k, --kill stop running instance (send SIGTERM)\n" |
106 | " -r, --reload reload running instance (send SIGHUP)\n" | 108 | " -r, --reload reload running instance (send SIGHUP)\n" |
109 | " -s signum, --signal=signum\n" | ||
110 | " send the specified signal to the running process\n" | ||
107 | " -c, --check check if the process is running\n" | 111 | " -c, --check check if the process is running\n" |
108 | " (the above commands operate on dudki itself if no\n" | 112 | " (the above commands operate on dudki itself if no\n" |
109 | " process name has been specified)\n" | 113 | " process name has been specified)\n" |
110 | " -e, --ensure ensure that dudki is running\n" | 114 | " -e, --ensure ensure that dudki is running\n" |
111 | " -t, --test test configuration file and exit" | 115 | " -t, --test test configuration file and exit" |
112 | #else /* !HAVE_GETOPT_LONG */ | 116 | #else /* !HAVE_GETOPT_LONG */ |
113 | " -h display this text\n" | 117 | " -h display this text\n" |
114 | " -V display version number\n" | 118 | " -V display version number\n" |
115 | " -L show license\n" | 119 | " -L show license\n" |
116 | " -f filename specify the configuration file to use\n" | 120 | " -f filename specify the configuration file to use\n" |
117 | "\n" | 121 | "\n" |
118 | " -k stop running instance (send SIGTERM)\n" | 122 | " -k stop running instance (send SIGTERM)\n" |
119 | " -r reload running instance (send SIGHUP)\n" | 123 | " -r reload running instance (send SIGHUP)\n" |
124 | " -s signum send the specified signal to the running process\n" | ||
120 | " -c check if the process is running\n" | 125 | " -c check if the process is running\n" |
121 | " (the above commands operate on dudki itself if no\n" | 126 | " (the above commands operate on dudki itself if no\n" |
122 | " process name has been specified)\n" | 127 | " process name has been specified)\n" |
123 | " -e ensure that dudki is running\n" | 128 | " -e ensure that dudki is running\n" |
124 | " -t test configuration file and exit" | 129 | " -t test configuration file and exit" |
125 | #endif /* /HAVE_GETOPT_LONG */ | 130 | #endif /* /HAVE_GETOPT_LONG */ |
126 | << endl; | 131 | << endl; |
127 | exit(0); | 132 | exit(0); |
128 | break; | 133 | break; |
129 | case 'V': | 134 | case 'V': |
130 | cerr << VERSION << endl; | 135 | cerr << VERSION << endl; |
131 | exit(0); | 136 | exit(0); |
132 | break; | 137 | break; |
133 | case 'L': | 138 | case 'L': |
134 | extern const char *COPYING; | 139 | extern const char *COPYING; |
135 | cerr << COPYING << endl; | 140 | cerr << COPYING << endl; |
136 | exit(0); | 141 | exit(0); |
137 | break; | 142 | break; |
138 | case 'f': | 143 | case 'f': |
139 | config_file = optarg; | 144 | config_file = optarg; |
140 | break; | 145 | break; |
141 | case 'k': | 146 | case 'k': |
142 | if(op!=op_default) { | 147 | if(op!=op_default) { |
143 | cerr << "Can't obey two or more orders at once" << endl; | 148 | cerr << "Can't obey two or more orders at once" << endl; |
144 | exit(1); | 149 | exit(1); |
145 | } | 150 | } |
146 | op = op_signal; op_signum = SIGTERM; | 151 | op = op_signal; op_signum = SIGTERM; |
147 | break; | 152 | break; |
148 | case 'r': | 153 | case 'r': |
149 | if(op!=op_default) { | 154 | if(op!=op_default) { |
150 | cerr << "Can't obey two or more orders at once" << endl; | 155 | cerr << "Can't obey two or more orders at once" << endl; |
151 | exit(1); | 156 | exit(1); |
152 | } | 157 | } |
153 | op = op_signal; op_signum = SIGHUP; | 158 | op = op_signal; op_signum = SIGHUP; |
154 | break; | 159 | break; |
155 | case 'c': | 160 | case 'c': |
156 | if(op!=op_default) { | 161 | if(op!=op_default) { |
157 | cerr << "Can't obey two or more orders at once" << endl; | 162 | cerr << "Can't obey two or more orders at once" << endl; |
158 | exit(1); | 163 | exit(1); |
159 | } | 164 | } |
160 | op = op_signal; op_signum = 0; | 165 | op = op_signal; op_signum = 0; |
161 | break; | 166 | break; |
162 | case 'e': | 167 | case 'e': |
163 | if(op!=op_default) { | 168 | if(op!=op_default) { |
164 | cerr << "Can't obey two or more orders at once" << endl; | 169 | cerr << "Can't obey two or more orders at once" << endl; |
165 | exit(1); | 170 | exit(1); |
166 | } | 171 | } |
167 | op = op_ensure; | 172 | op = op_ensure; |
168 | break; | 173 | break; |
169 | case 't': | 174 | case 't': |
170 | if(op!=op_default) { | 175 | if(op!=op_default) { |
171 | cerr << "Can't obey two or more orders at once" << endl; | 176 | cerr << "Can't obey two or more orders at once" << endl; |
172 | exit(1); | 177 | exit(1); |
173 | } | 178 | } |
174 | op = op_test; | 179 | op = op_test; |
175 | break; | 180 | break; |
181 | case 's': | ||
182 | if(op!=op_default) { | ||
183 | cerr << "Can't obey two or more orders at once" << endl; | ||
184 | exit(1); | ||
185 | } | ||
186 | op = op_signal; | ||
187 | errno = 0; | ||
188 | op_signum = strtol(optarg,NULL,0); | ||
189 | if(errno) { | ||
190 | cerr << "Can't obtain the signal value" << endl; | ||
191 | exit(1); | ||
192 | } | ||
193 | break; | ||
176 | default: | 194 | default: |
177 | cerr << "Huh??" << endl; | 195 | cerr << "Huh??" << endl; |
178 | exit(1); | 196 | exit(1); |
179 | break; | 197 | break; |
180 | } | 198 | } |
181 | } | 199 | } |
182 | const char *sid = *argv; | 200 | const char *sid = *argv; |
183 | const char *t; | 201 | const char *t; |
184 | while(t = index(sid,'/')) { | 202 | while(t = index(sid,'/')) { |
185 | sid = t; sid++; | 203 | sid = t; sid++; |
186 | } | 204 | } |
187 | openlog(sid,LOG_CONS|LOG_PERROR|LOG_PID,LOG_DAEMON); | 205 | openlog(sid,LOG_CONS|LOG_PERROR|LOG_PID,LOG_DAEMON); |
188 | configuration config; | 206 | configuration config; |
189 | config.parse(config_file); | 207 | config.parse(config_file); |
190 | switch(op) { | 208 | switch(op) { |
191 | case op_test: | 209 | case op_test: |
192 | cerr << "Configuration OK" << endl; | 210 | cerr << "Configuration OK" << endl; |
193 | break; | 211 | break; |
194 | case op_signal: | 212 | case op_signal: |
195 | try { | 213 | try { |
196 | if(optind>=argc) { | 214 | if(optind>=argc) { |
197 | signal_self(config,op_signum); | 215 | signal_self(config,op_signum); |
198 | }else{ | 216 | }else{ |
199 | int failures = 0; | 217 | int failures = 0; |
200 | for(int narg=optind;narg<argc;narg++) { | 218 | for(int narg=optind;narg<argc;narg++) { |
201 | try { | 219 | try { |
202 | processes_t::const_iterator i = config.processes.find(argv[narg]); | 220 | processes_t::const_iterator i = config.processes.find(argv[narg]); |
203 | if(i==config.processes.end()) | 221 | if(i==config.processes.end()) |
204 | throw runtime_error("no such process configured"); | 222 | throw runtime_error("no such process configured"); |
205 | i->second.signal(op_signum); | 223 | i->second.signal(op_signum); |
206 | }catch(exception& e) { | 224 | }catch(exception& e) { |
207 | cerr << "dudki(" << argv[narg] << "): " << e.what() << endl; | 225 | cerr << "dudki(" << argv[narg] << "): " << e.what() << endl; |