├── .travis.yml ├── LICENSE ├── Makefile ├── README.md ├── sensors ├── blockdev.sh ├── chardev.sh ├── ping.sh ├── tcp.sh └── wifi.sh ├── swatd.c ├── swatd.conf └── swatd.init /.travis.yml: -------------------------------------------------------------------------------- 1 | # This is a build configuration for travis-ci.org 2 | language: c 3 | script: make 4 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. 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It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /Makefile: -------------------------------------------------------------------------------- 1 | swatd: swatd.c 2 | gcc -Wall -Werror -pedantic swatd.c -o swatd 3 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | SWATd 2 | ===== 3 | 4 | [![Build Status](https://travis-ci.org/defuse/swatd.svg?branch=master)](https://travis-ci.org/defuse/swatd) 5 | 6 | SWATd lets you configure 'sensors' that check your PC's external environment. 7 | When enough sensors 'fail', SWATd will run a script for you. 8 | 9 | Sensors are commands or scripts that get executed repeatedly. A sensor is said 10 | to fail when its exit code makes a transition from zero (working) to non-zero 11 | (not working). This makes configuration easy and powerful. For example, you can 12 | make a sensor that checks if your website is online, and then make a command to 13 | alert you when the sensor fails. 14 | 15 | SWATd was originally written as a tool to defend against theft by criminals or 16 | to detect when your computer is captured by police. For example, you can set 17 | a sensor to detect if your WiFi network is in range, and when it goes out of 18 | range, automatically unmount encrypted volumes. So if someone steals your laptop 19 | from your house, your files will be safe. Since SWATd only counts the failure 20 | when the sensor *changes* from a "WiFi in range" state to a "WiFi out of range" 21 | state, if you use your laptop somewhere else, you don't need to worry about 22 | disabling SWATd every time you leave your house. 23 | 24 | **WARNING:** While this may be helpful for some, there are significant risks. 25 | For one, in some countries, including the United States, you could go to jail on 26 | obstruction of justice charges just for *running* SWATd, even though you are 27 | innocent. Second, SWATd is not perfect: law enforcement or a smart thief can 28 | still dump your RAM, thus getting your encryption keys, before doing anything 29 | that would make a sensor fail. Use with caution, and consult an attorney first. 30 | **It's most likely the case that if you find yourself needing to rely on SWATd, 31 | then you have already lost.** 32 | 33 | Building and Installing 34 | ----------------------- 35 | 36 | To build SWATd, `cd` into the source code directory and run `make`. This will 37 | create a `swatd` executable. If you want to install it as a daemon, refer to 38 | your operating system's manuals. To run SWATd from a terminal (non-daemon), pass 39 | the `-s` option. 40 | 41 | ### Arch Linux 42 | 43 | To install SWATd on Arch Linux, copy `swatd` into `/usr/local/bin`: 44 | 45 | # make 46 | # install swatd /usr/local/bin/ 47 | 48 | Create the configuration file (See the Configuration section below): 49 | 50 | # mkdir /etc/swatd 51 | # chmod 700 /etc/swatd 52 | # vim /etc/swatd/swatd.conf 53 | 54 | If you want SWATd to start when you boot, add the following to 55 | `/etc/systemd/system/swatd.service`. 56 | 57 | [Unit] 58 | Description=SWATd 59 | 60 | [Service] 61 | Type=forking 62 | PIDFile=/var/run/swatd.pid 63 | ExecStart=/usr/local/bin/swatd -p /var/run/swatd.pid 64 | Restart=on-abort 65 | 66 | [Install] 67 | WantedBy=multi-user.target 68 | 69 | Then run: 70 | 71 | # systemctl enable swatd.service 72 | # systemctl start swatd.service 73 | 74 | You can check the status of SWATd by running: 75 | 76 | # systemctl status swatd.service 77 | 78 | Read SWATd's log entries by running: 79 | 80 | # journalctl /usr/local/bin/swatd 81 | 82 | ### Debian 83 | 84 | To install SWATd on Debian, copy `swatd` into `/usr/local/bin`: 85 | 86 | # make 87 | # install swatd /usr/local/bin/ 88 | 89 | Create the configuration file (See the Configuration section below): 90 | 91 | # mkdir /etc/swatd 92 | # chmod 700 /etc/swatd 93 | # vim /etc/swatd/swatd.conf 94 | 95 | Then copy `swatd.init` to `/etc/init.d/` and enable it: 96 | 97 | # cp swatd.init /etc/init.d/swatd 98 | # update-rc.d swatd defaults 99 | 100 | Configuration 101 | ------------- 102 | 103 | By default, SWATd looks for a configuration file in `/etc/swatd/swatd.conf`. 104 | Alternatively, you can provide a configuration file path to SWATd with the `-c` 105 | option. In any case, the configuration file must not be world writable, or SWATd 106 | will refuse to run. 107 | 108 | The configuration file syntax is extremely simple. There are only three options: 109 | `interval`, `threshold`, and `execute`. To set a value for one of the options, 110 | begin a line with its name, followed by a colon, followed by the value. 111 | Everything after a '#' is treated as a comment (ignored). Blank lines are 112 | ignored. All other lines define a sensor command. 113 | 114 | `interval` is the number of seconds to wait between sensor checks. `threshold` 115 | is the number of sensors that must fail before assuming you are being raided. 116 | `execute` is the command to execute when you are being raided. 117 | 118 | Here is an example configuration file: 119 | 120 | # This configuration makes SWATd continually check if /tmp/foobar exists. If 121 | # /tmp/foobar stops existing (goes from existing to not existing), SWATd will 122 | # write some text to the file /tmp/ran. 123 | 124 | # ============================================================================= 125 | # The number of seconds to wait between sensor checks. 126 | # ============================================================================= 127 | interval: 30 128 | 129 | # ============================================================================= 130 | # The number of sensors that must 'fail' at the same time. 131 | # ============================================================================= 132 | threshold: 1 133 | 134 | # ============================================================================= 135 | # The command to execute when 'threshold' sensors fail. 136 | # ============================================================================= 137 | execute: echo "haiii" > /tmp/ran 138 | 139 | # ============================================================================= 140 | # Sensor commands. 141 | # A sensor has 'failed' when the exit code transisions from zero to non-zero. 142 | # If a sensor's exit code is transitions from zero to 255, the command will be 143 | # executed immediately regardless of the 'threshold' setting, and the failure 144 | # count will not be incremented. 145 | # WARNING: Sensor commands MUST terminate. 146 | # ============================================================================= 147 | 148 | test -e /tmp/foobar 149 | -------------------------------------------------------------------------------- /sensors/blockdev.sh: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | readonly DEVICE=/dev/sdc 3 | 4 | test -b "$DEVICE" 5 | exit $? 6 | 7 | -------------------------------------------------------------------------------- /sensors/chardev.sh: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | DEVICE=$1 3 | 4 | # Default device value 5 | : ${DEVICE:="/dev/input/mouse0"} 6 | 7 | test -c "$DEVICE" 8 | exit $? 9 | 10 | -------------------------------------------------------------------------------- /sensors/ping.sh: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | readonly HOSTNAME=localhost 3 | readonly TIMEOUT=2 4 | 5 | for i in {1..5}; do 6 | if ping -c 1 -w "$TIMEOUT" "$HOSTNAME" > /dev/null 2>&1; then 7 | exit 0 8 | fi 9 | done 10 | 11 | exit 1 12 | -------------------------------------------------------------------------------- /sensors/tcp.sh: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | readonly HOSTNAME=localhost 3 | readonly PORT=80 4 | readonly TIMEOUT=2 5 | 6 | for i in {1..5}; do 7 | if nc -w "$TIMEOUT" -z "$HOSTNAME" "$PORT" > /dev/null 2>&1; then 8 | exit 0 9 | fi 10 | done 11 | 12 | exit 1 13 | -------------------------------------------------------------------------------- /sensors/wifi.sh: -------------------------------------------------------------------------------- 1 | #!/bin/bash 2 | readonly SSID="your-ssid" 3 | readonly MAC_ADDRESS="00:00:00:00:00:00" 4 | 5 | if iwconfig 2>&1 | fgrep -q "ESSID:\"$SSID\""; then 6 | if iwconfig 2>&1 | fgrep -q "$MAC_ADDRESS"; then 7 | exit 0 8 | else 9 | exit 1 10 | fi 11 | else 12 | exit 1 13 | fi 14 | 15 | -------------------------------------------------------------------------------- /swatd.c: -------------------------------------------------------------------------------- 1 | /* 2 | * swatd.c - Run scripts when you are being raided by the police. 3 | * This program is free software: you can redistribute it and/or modify 4 | * it under the terms of the GNU General Public License as published by 5 | * the Free Software Foundation, either version 3 of the License, or 6 | * (at your option) any later version. 7 | * 8 | * This program is distributed in the hope that it will be useful, 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 | * GNU General Public License for more details. 12 | * 13 | * You should have received a copy of the GNU General Public License 14 | * along with this program. If not, see . 15 | */ 16 | 17 | #include 18 | #include 19 | #include 20 | #include 21 | #include 22 | #include 23 | #include 24 | #include 25 | #include 26 | #include 27 | #include 28 | 29 | #define DEFAULT_CONFIG "/etc/swatd/swatd.conf" 30 | #define MAX_SCRIPTS 100 31 | #define DEFAULT_CHECK_INTERVAL 30 32 | 33 | typedef struct SwatConfig { 34 | char *execute; 35 | char **scripts; 36 | int script_count; 37 | int failure_count; 38 | } config_t; 39 | 40 | typedef struct SensorState { 41 | char *command; 42 | int last; 43 | int failed; 44 | } sensor_t; 45 | 46 | void printUsage(void); 47 | void becomeDaemon(void); 48 | void loadConfig(config_t *config, const char *path); 49 | void monitor(config_t *config); 50 | void runCommand(config_t *config); 51 | void logError(const char *msg, ...); 52 | void logInfo(const char *msg, ...); 53 | void strip(char *str); 54 | void catch_signal(int signal); 55 | void writePID(const char *path); 56 | 57 | int use_syslog = 0; 58 | int check_interval = DEFAULT_CHECK_INTERVAL; 59 | 60 | int main(int argc, char **argv) 61 | { 62 | int c = 0; 63 | int become_daemon = 1; 64 | int config_loaded = 0; 65 | config_t config; 66 | char *pidfile = NULL; 67 | 68 | opterr = 0; 69 | while ((c = getopt(argc, argv, "sc:p:")) != -1) { 70 | switch (c) { 71 | case 's': 72 | become_daemon = 0; 73 | break; 74 | case 'c': 75 | loadConfig(&config, optarg); 76 | config_loaded = 1; 77 | break; 78 | case 'p': 79 | pidfile = malloc(strlen(optarg) + 1); 80 | strcpy(pidfile, optarg); 81 | break; 82 | case 'h': 83 | printUsage(); 84 | exit(0); 85 | break; 86 | case '?': 87 | printUsage(); 88 | exit(EXIT_FAILURE); 89 | break; 90 | default: 91 | exit(EXIT_FAILURE); 92 | } 93 | } 94 | 95 | if (signal(SIGTERM, catch_signal) == SIG_ERR) { 96 | logError("Error while setting SIGTERM handler.\n"); 97 | exit(EXIT_FAILURE); 98 | } 99 | 100 | if (become_daemon) { 101 | becomeDaemon(); 102 | } 103 | 104 | if (pidfile != NULL) { 105 | writePID(pidfile); 106 | free(pidfile); 107 | pidfile = NULL; 108 | } 109 | 110 | 111 | if (!config_loaded) { 112 | loadConfig(&config, DEFAULT_CONFIG); 113 | } 114 | 115 | monitor(&config); 116 | 117 | exit(EXIT_SUCCESS); 118 | } 119 | 120 | void printUsage(void) 121 | { 122 | printf("SWATd - Run scripts when you are being raided by the police.\n"); 123 | printf(" -c CONFIG\t\tUse config file CONFIG.\n"); 124 | printf(" -s\t\t\tDon't fork.\n"); 125 | printf(" -p\t\t\tPID file.\n"); 126 | printf(" -h\t\t\tHelp menu.\n"); 127 | } 128 | 129 | void becomeDaemon(void) 130 | { 131 | pid_t pid, sid; 132 | pid = fork(); 133 | 134 | if (pid < 0) { 135 | /* error */ 136 | logError("Fork failed.\n"); 137 | exit(EXIT_FAILURE); 138 | } else if (pid > 0) { 139 | /* we are the parent */ 140 | exit(EXIT_SUCCESS); 141 | } 142 | 143 | umask(0); 144 | 145 | openlog("SWATd", LOG_NOWAIT | LOG_PID, LOG_USER); 146 | use_syslog = 1; 147 | logInfo("SWATd started.\n"); 148 | 149 | sid = setsid(); 150 | if (sid < 0) { 151 | logError("Could not create process group\n"); 152 | exit(EXIT_FAILURE); 153 | } 154 | 155 | if (chdir("/") < 0) { 156 | logError("Could not change working directory to /\n"); 157 | exit(EXIT_FAILURE); 158 | } 159 | 160 | close(STDIN_FILENO); 161 | close(STDOUT_FILENO); 162 | close(STDERR_FILENO); 163 | } 164 | 165 | void loadConfig(config_t *config, const char *path) 166 | { 167 | char line[2048]; 168 | FILE *fp; 169 | 170 | /* Don't run if the config file is world writable. */ 171 | struct stat stat_buf; 172 | if (stat(path, &stat_buf) == -1) { 173 | logError("Could not stat() %s\n", path); 174 | exit(EXIT_FAILURE); 175 | } 176 | if (stat_buf.st_mode & 2) { 177 | logError("Config file %s is world writable. This is dangerous.\n", path); 178 | exit(EXIT_FAILURE); 179 | } 180 | 181 | 182 | fp = fopen(path, "r"); 183 | if (fp == NULL) { 184 | logError("Could not open config file %s\n", path); 185 | exit(EXIT_FAILURE); 186 | } 187 | 188 | config->scripts = malloc(sizeof(char *) * MAX_SCRIPTS); 189 | config->script_count = 0; 190 | 191 | while (fgets(line, sizeof(line), fp) != NULL) { 192 | strip(line); 193 | if (strstr(line, "threshold:") == line) { 194 | sscanf(line + strlen("threshold:"), "%d", &config->failure_count); 195 | } 196 | else if (strstr(line, "interval:") == line) { 197 | sscanf(line + strlen("interval:"), "%d", &check_interval); 198 | } 199 | else if (strstr(line, "execute:") == line) { 200 | char *cmd = line + strlen("execute:"); 201 | strip(cmd); 202 | config->execute = malloc(strlen(cmd) + 1); 203 | strcpy(config->execute, cmd); 204 | } else if (strlen(line) > 0 && config->script_count < MAX_SCRIPTS) { 205 | config->scripts[config->script_count] = malloc(strlen(line) + 1); 206 | strcpy(config->scripts[config->script_count], line); 207 | config->script_count++; 208 | } 209 | } 210 | 211 | if (config->script_count == MAX_SCRIPTS) { 212 | logError("Too many scripts.\n"); 213 | } 214 | 215 | if (ferror(fp)) { 216 | logError("Error while reading config file %s\n", path); 217 | exit(EXIT_FAILURE); 218 | } 219 | 220 | fclose(fp); 221 | } 222 | 223 | void monitor(config_t *config) 224 | { 225 | int i, retval, failed, ran; 226 | 227 | int sensor_count = config->script_count; 228 | sensor_t *sensors = malloc(sensor_count * sizeof(sensor_t)); 229 | 230 | for (i = 0; i < sensor_count; i++) { 231 | sensors[i].command = config->scripts[i]; 232 | sensors[i].last = -1; 233 | sensors[i].failed = 0; 234 | } 235 | 236 | failed = 0; 237 | ran = 0; 238 | 239 | while (1) { 240 | sleep(check_interval); 241 | 242 | for (i = 0; i < sensor_count; i++) { 243 | retval = system(sensors[i].command); 244 | if (retval == -1) { 245 | logError("Could not execute sensor [%s]\n", sensors[i].command); 246 | } else { 247 | retval = WEXITSTATUS(retval); 248 | /* Transition from zero to non-zero (sensor failed). */ 249 | if (sensors[i].last == 0 && retval != 0) { 250 | if (retval == 255) { 251 | runCommand(config); 252 | } else { 253 | sensors[i].failed = 1; 254 | failed++; 255 | } 256 | /* Transition from non-zero to zero (sensor recovered). */ 257 | } else if (sensors[i].failed && retval == 0) { 258 | sensors[i].failed = 0; 259 | failed--; 260 | } 261 | sensors[i].last = retval; 262 | } 263 | } 264 | 265 | /* We don't want to keep executing the command once enough sensors fail. 266 | * Instead, we only execute it again once the failure count drops below 267 | * the threshold and crosses it again. */ 268 | 269 | if (ran == 0 && failed >= config->failure_count) { 270 | logInfo("%d sensor(s) failed. Executing the command.\n", failed); 271 | runCommand(config); 272 | ran = 1; 273 | } else if (ran && failed < config->failure_count) { 274 | logInfo("Some sensors recovered. Allowing re-execution.\n"); 275 | ran = 0; 276 | } 277 | 278 | } 279 | } 280 | 281 | void runCommand(config_t *config) 282 | { 283 | int retval = system(config->execute); 284 | if (retval == -1) { 285 | logError("Could not execute the command [%s]\n", config->execute); 286 | } else if (retval != 0) { 287 | logError("Command returned non-zero.\n"); 288 | } 289 | } 290 | 291 | 292 | void logError(const char *msg, ...) 293 | { 294 | va_list args; 295 | va_start(args, msg); 296 | if (use_syslog) { 297 | vsyslog(LOG_ERR, msg, args); 298 | } else { 299 | printf("ERROR: "); 300 | vprintf(msg, args); 301 | } 302 | va_end(args); 303 | } 304 | 305 | void logInfo(const char *msg, ...) 306 | { 307 | va_list args; 308 | va_start(args, msg); 309 | if (use_syslog) { 310 | vsyslog(LOG_NOTICE, msg, args); 311 | } else { 312 | printf("NOTICE: "); 313 | vprintf(msg, args); 314 | } 315 | va_end(args); 316 | } 317 | 318 | void strip(char *str) 319 | { 320 | char *to = str, *from = str; 321 | 322 | /* Move to the first non-whitespace character. */ 323 | while (isspace(*from) && *from != '\0') { 324 | from++; 325 | } 326 | 327 | /* Copy to the end of the string or start of a comment. */ 328 | while (*from != '\0' && *from != '#') { 329 | *to = *from; 330 | to++; 331 | from++; 332 | } 333 | *to = '\0'; 334 | 335 | /* Remove spaces from the end of the string.. */ 336 | to--; 337 | while (isspace(*to)) { 338 | *to = '\0'; 339 | to--; 340 | } 341 | } 342 | 343 | void catch_signal(int signal) 344 | { 345 | if (signal == SIGTERM) { 346 | closelog(); 347 | exit(EXIT_SUCCESS); 348 | } 349 | } 350 | 351 | void writePID(const char *path) 352 | { 353 | pid_t pid = getpid(); 354 | FILE *fp = fopen(path, "w"); 355 | if (fp == NULL) { 356 | logError("Error opening PID file.\n"); 357 | return; 358 | } 359 | if (fprintf(fp, "%d\n", pid) < 0) { 360 | logError("Error writing to PID file.\n"); 361 | } 362 | fclose(fp); 363 | } 364 | -------------------------------------------------------------------------------- /swatd.conf: -------------------------------------------------------------------------------- 1 | # This configuration makes SWATd continually check if /tmp/foobar exists. If 2 | # /tmp/foobar stops existing (goes from existing to not existing), SWATd will 3 | # write some text to the file /tmp/ran. 4 | 5 | # ============================================================================= 6 | # The number of seconds to wait between sensor checks. 7 | # ============================================================================= 8 | interval: 30 9 | 10 | # ============================================================================= 11 | # The number of sensors that must 'fail' at the same time. 12 | # ============================================================================= 13 | threshold: 1 14 | 15 | # ============================================================================= 16 | # The command to execute when 'threshold' sensors fail. 17 | # ============================================================================= 18 | execute: echo "haiii" > /tmp/ran 19 | 20 | # ============================================================================= 21 | # Sensor commands. 22 | # A sensor has 'failed' when the exit code transisions from zero to non-zero. 23 | # If a sensor's exit code is transitions from zero to 255, the command will be 24 | # executed immediately regardless of the 'threshold' setting, and the failure 25 | # count will not be incremented. 26 | # WARNING: Sensor commands MUST terminate. 27 | # ============================================================================= 28 | 29 | test -e /tmp/foobar 30 | -------------------------------------------------------------------------------- /swatd.init: -------------------------------------------------------------------------------- 1 | #! /bin/sh 2 | ### BEGIN INIT INFO 3 | # Provides: swatd 4 | # Required-Start: $remote_fs $syslog 5 | # Required-Stop: $remote_fs $syslog 6 | # Default-Start: 2 3 4 5 7 | # Default-Stop: 0 1 6 8 | # Short-Description: SWATd 9 | # Description: Run scripts when you are being raided by police. 10 | ### END INIT INFO 11 | 12 | # Author: Taylor Hornby 13 | # 14 | # Please remove the "Author" lines above and replace them 15 | # with your own name if you copy and modify this script. 16 | 17 | # Do NOT "set -e" 18 | 19 | # PATH should only include /usr/* if it runs after the mountnfs.sh script 20 | PATH=/sbin:/usr/sbin:/bin:/usr/bin 21 | DESC="SWATd Daemon" 22 | NAME=swatd 23 | DAEMON=/usr/bin/$NAME 24 | DAEMON_ARGS="-p /var/run/swatd.pid" 25 | PIDFILE=/var/run/swatd.pid 26 | SCRIPTNAME=/etc/init.d/swatd 27 | CHUID=root:root 28 | 29 | # Exit if the package is not installed 30 | [ -x "$DAEMON" ] || exit 0 31 | 32 | # Read configuration variable file if it is present 33 | [ -r /etc/default/$NAME ] && . /etc/default/$NAME 34 | 35 | # Load the VERBOSE setting and other rcS variables 36 | . /lib/init/vars.sh 37 | 38 | # Define LSB log_* functions. 39 | # Depend on lsb-base (>= 3.2-14) to ensure that this file is present 40 | # and status_of_proc is working. 41 | . /lib/lsb/init-functions 42 | 43 | # 44 | # Function that starts the daemon/service 45 | # 46 | do_start() 47 | { 48 | # Return 49 | # 0 if daemon has been started 50 | # 1 if daemon was already running 51 | # 2 if daemon could not be started 52 | start-stop-daemon --start --quiet --pidfile $PIDFILE --exec $DAEMON --test > /dev/null \ 53 | || return 1 54 | start-stop-daemon --start --quiet --chuid $CHUID -b --pidfile $PIDFILE --exec $DAEMON -- \ 55 | $DAEMON_ARGS \ 56 | || return 2 57 | # Add code here, if necessary, that waits for the process to be ready 58 | # to handle requests from services started subsequently which depend 59 | # on this one. As a last resort, sleep for some time. 60 | } 61 | 62 | # 63 | # Function that stops the daemon/service 64 | # 65 | do_stop() 66 | { 67 | # Return 68 | # 0 if daemon has been stopped 69 | # 1 if daemon was already stopped 70 | # 2 if daemon could not be stopped 71 | # other if a failure occurred 72 | start-stop-daemon --stop --quiet --retry=TERM/30/KILL/5 --pidfile $PIDFILE --name $NAME 73 | RETVAL="$?" 74 | [ "$RETVAL" = 2 ] && return 2 75 | # Wait for children to finish too if this is a daemon that forks 76 | # and if the daemon is only ever run from this initscript. 77 | # If the above conditions are not satisfied then add some other code 78 | # that waits for the process to drop all resources that could be 79 | # needed by services started subsequently. A last resort is to 80 | # sleep for some time. 81 | start-stop-daemon --stop --quiet --oknodo --retry=0/30/KILL/5 --exec $DAEMON 82 | [ "$?" = 2 ] && return 2 83 | # Many daemons don't delete their pidfiles when they exit. 84 | rm -f $PIDFILE 85 | return "$RETVAL" 86 | } 87 | 88 | # 89 | # Function that sends a SIGHUP to the daemon/service 90 | # 91 | do_reload() { 92 | # 93 | # If the daemon can reload its configuration without 94 | # restarting (for example, when it is sent a SIGHUP), 95 | # then implement that here. 96 | # 97 | start-stop-daemon --stop --signal 1 --quiet --pidfile $PIDFILE --name $NAME 98 | return 0 99 | } 100 | 101 | case "$1" in 102 | start) 103 | [ "$VERBOSE" != no ] && log_daemon_msg "Starting $DESC" "$NAME" 104 | do_start 105 | case "$?" in 106 | 0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;; 107 | 2) [ "$VERBOSE" != no ] && log_end_msg 1 ;; 108 | esac 109 | ;; 110 | stop) 111 | [ "$VERBOSE" != no ] && log_daemon_msg "Stopping $DESC" "$NAME" 112 | do_stop 113 | case "$?" in 114 | 0|1) [ "$VERBOSE" != no ] && log_end_msg 0 ;; 115 | 2) [ "$VERBOSE" != no ] && log_end_msg 1 ;; 116 | esac 117 | ;; 118 | status) 119 | status_of_proc "$DAEMON" "$NAME" && exit 0 || exit $? 120 | ;; 121 | #reload|force-reload) 122 | # 123 | # If do_reload() is not implemented then leave this commented out 124 | # and leave 'force-reload' as an alias for 'restart'. 125 | # 126 | #log_daemon_msg "Reloading $DESC" "$NAME" 127 | #do_reload 128 | #log_end_msg $? 129 | #;; 130 | restart|force-reload) 131 | # 132 | # If the "reload" option is implemented then remove the 133 | # 'force-reload' alias 134 | # 135 | log_daemon_msg "Restarting $DESC" "$NAME" 136 | do_stop 137 | case "$?" in 138 | 0|1) 139 | do_start 140 | case "$?" in 141 | 0) log_end_msg 0 ;; 142 | 1) log_end_msg 1 ;; # Old process is still running 143 | *) log_end_msg 1 ;; # Failed to start 144 | esac 145 | ;; 146 | *) 147 | # Failed to stop 148 | log_end_msg 1 149 | ;; 150 | esac 151 | ;; 152 | *) 153 | #echo "Usage: $SCRIPTNAME {start|stop|restart|reload|force-reload}" >&2 154 | echo "Usage: $SCRIPTNAME {start|stop|status|restart|force-reload}" >&2 155 | exit 3 156 | ;; 157 | esac 158 | 159 | : 160 | 161 | --------------------------------------------------------------------------------