diff options
Diffstat (limited to 'www/jakarta-tomcat41/files/daemonctl.c')
| -rw-r--r-- | www/jakarta-tomcat41/files/daemonctl.c | 480 |
1 files changed, 0 insertions, 480 deletions
diff --git a/www/jakarta-tomcat41/files/daemonctl.c b/www/jakarta-tomcat41/files/daemonctl.c deleted file mode 100644 index 60bb58201a6b..000000000000 --- a/www/jakarta-tomcat41/files/daemonctl.c +++ /dev/null @@ -1,480 +0,0 @@ -/* - * -*- mode: Fundamental; tab-width: 4; -*- - * ex:ts=4 - * - * Daemon control program. - * - * $FreeBSD: /tmp/pcvs/ports/www/jakarta-tomcat41/files/Attic/daemonctl.c,v 1.9 2002-08-28 22:54:21 znerd Exp $ - */ - -#include <assert.h> -#include <fcntl.h> -#include <signal.h> -#include <stdarg.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <syslog.h> -#include <unistd.h> -#include <sys/errno.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <sys/uio.h> - -/* The maximum size of the PID file, in bytes */ -#define MAX_FILE_SIZE 32 - -/* The interval in seconds between the checks to make sure the process - died after a kill */ -#define STOP_TIME_INTERVAL 1 - -#define ERR_ILLEGAL_ARGUMENT 1 -#define ERR_PID_FILE_NOT_FOUND 2 -#define ERR_PID_FILE_TOO_LARGE 3 -#define ERR_PID_FILE_CONTAINS_ILLEGAL_CHAR 4 -#define ERR_KILL_FAILED 5 -#define ERR_ALREADY_RUNNING 6 -#define ERR_NOT_RUNNING 7 -#define ERR_CHDIR_TO_APP_HOME 8 -#define ERR_ACCESS_JAR_FILE 17 -#define ERR_STDOUT_LOGFILE_OPEN 9 -#define ERR_STDERR_LOGFILE_OPEN 10 -#define ERR_FORK_FAILED 11 -#define ERR_STAT_JAVA_HOME 12 -#define ERR_JAVA_HOME_NOT_DIR 13 -#define ERR_STAT_JAVA_CMD 14 -#define ERR_JAVA_CMD_NOT_FILE 15 -#define ERR_JAVA_CMD_NOT_EXECUTABLE 16 - -#define private static - -private void printUsage(void); -private int openPIDFile(void); -private int readPID(int); -private void writePID(int file, int pid); -private void start(void); -private void stop(void); -private void restart(void); - - -/** - * Main function. This function is called when this program is executed. - * - * @param argc - * the number of arguments plus one, so always greater than 0. - * - * @param argv - * the arguments in an array of character pointers, where the last argument - * element is followed by a NULL element. - */ -int main(int argc, char *argv[]) { - - /* Declare variables, like all other good ANSI C programs do :) */ - char *argument; - - /* Parse the arguments */ - if (argc < 2) { - printUsage(); - return 0; - } - - argument = argv[1]; - if (strcmp("start", argument) == 0) { - start(); - } else if (strcmp("stop", argument) == 0) { - stop(); - } else if (strcmp("restart", argument) == 0) { - restart(); - } else { - fprintf(stderr, "%%CONTROL_SCRIPT_NAME%%: Illegal argument \"%s\".\n", argument); - printUsage(); - exit(ERR_ILLEGAL_ARGUMENT); - } - - return 0; -} - - -/** - * Prints usage information to stdout. - */ -void printUsage(void) { - printf("Usage: %%CONTROL_SCRIPT_NAME%% [ start | stop | restart ]\n"); -} - - -/** - * Attempts to open the PID file. If that file is successfully opened, then - * the file handle (an int) will be returned. - * - * @return - * the file handle. - */ -int openPIDFile(void) { - - int file; - - /* Attempt to open the PID file */ - file = open("%%PID_FILE%%", O_RDWR); - if (file < 0) { - printf(" [ FAILED ]\n"); - fprintf(stderr, "%%CONTROL_SCRIPT_NAME%%: Unable to open %%PID_FILE%% for reading and writing: "); - perror(NULL); - exit(ERR_PID_FILE_NOT_FOUND); - } - - return file; -} - - -/** - * Reads a PID from the specified file. The file is identified by a file - * handle. - * - * @param file - * the file handle. - * - * @return - * the PID, or -1 if the file was empty. - */ -int readPID(int file) { - - char *buffer; - int hadNewline = 0; - unsigned int count; - unsigned int i; - int pid; - - /* Read the PID file contents */ - buffer = (char *) malloc((MAX_FILE_SIZE + 1) * sizeof(char)); - count = read(file, buffer, MAX_FILE_SIZE + 1); - if (count > MAX_FILE_SIZE) { - printf(" [ FAILED ]\n"); - fprintf(stderr, "%%CONTROL_SCRIPT_NAME%%: The file %%PID_FILE%% contains more than %d bytes.\n", MAX_FILE_SIZE); - exit(ERR_PID_FILE_TOO_LARGE); - } - - /* Convert the bytes to a number */ - pid = 0; - for (i=0; i<count; i++) { - char c = buffer[i]; - if (c >= '0' && c <= '9') { - char digit = c - '0'; - pid *= 10; - pid += digit; - } else if (i == (count - 1) && c == '\n') { - /* XXX: Ignore a newline at the end of the file */ - hadNewline = 1; - } else { - printf(" [ FAILED ]\n"); - fprintf(stderr, "%%CONTROL_SCRIPT_NAME%%: The file %%PID_FILE%% contains an illegal character (%d) at position %d.\n", c, i); - exit(ERR_PID_FILE_CONTAINS_ILLEGAL_CHAR); - } - } - printf(" [ DONE ]\n"); - - if (count == 0 || (count == 1 && hadNewline == 1)) { - return -1; - } - - return pid; -} - - -/** - * Writes a process ID to the specified file. The file is identified by a file - * handle. - * - * @param file - * the file handle, always greater than 0. - * - * @param pid - * the PID to store, always greater than 0. - */ -void writePID(int file, int pid) { - - char *buffer; - int nbytes; - - /* Check preconditions */ - assert(file > 0); - assert(pid > 0); - - printf(">> Writing PID file..."); - - lseek(file, (off_t) 0, SEEK_SET); - ftruncate(file, (off_t) 0); - nbytes = asprintf(&buffer, "%d\n", pid); - write(file, buffer, nbytes); - printf(" [ DONE ]\n"); -} - - -/** - * Checks if the specified process is running. - * - * @param pid - * the process id, greater than 0. - * - * @return - * 0 if the specified process is not running, a different value otherwise. - */ -int existsProcess(int pid) { - - int result; - - /* Check preconditions */ - assert(pid > 0); - - /* See if the process exists */ - result = kill(pid, 0); - - /* If the result is 0, then the process exists */ - if (result == 0) { - return 1; - } else { - return 0; - } -} - - -/** - * Kills the process identified by the specified ID. - * - * @param pid - * the process id, greater than 0. - */ -void killProcess(int pid) { - - int result; - unsigned int waited; - unsigned int forced; - unsigned int interval = STOP_TIME_INTERVAL; - unsigned int timeout = %%STOP_TIMEOUT%%; - - /* Check preconditions */ - assert(pid > 0); - - printf(">> Terminating process %d...", pid); - result = kill(pid, SIGTERM); - if (result < 0) { - printf(" [ FAILED ]\n"); - fprintf(stderr, "%%CONTROL_SCRIPT_NAME%%: Unable to kill process %d: ", pid); - perror(NULL); - exit(ERR_KILL_FAILED); - } - - /* Wait until the process is actually killed */ - result = existsProcess(pid); - for (waited=0; result == 1 && waited < timeout; waited += interval) - { - printf("."); - fflush(NULL); - sleep(interval); - result = existsProcess(pid); - } - - /* If the process still exists, then have no mercy and kill it */ - forced = 0; - if (result == 1) { - - /* Force the process to die */ - result = kill(pid, SIGKILL); - if (result == 0) { - forced = 1; - printf(" [ DONE ]\n"); - fprintf(stderr, "%%CONTROL_SCRIPT_NAME%%: Process %d did not terminate within %%STOP_TIMEOUT%% sec. Killed.\n", pid); - } else if (result != ESRCH) { - printf(" [ FAILED ]\n"); - fprintf(stderr, "%%CONTROL_SCRIPT_NAME%%: Unable to kill process %d: ", pid); - perror(NULL); - exit(ERR_KILL_FAILED); - } - } - - if (forced == 0) { - printf(" [ DONE ]\n"); - } -} - - -/** - * Starts the daemon. - */ -void start(void) { - - int file; - int pid; - int result; - int stdoutLogFile; - int stderrLogFile; - struct stat sb; - - /* Open and read the PID file */ - printf(">> Reading PID file (%%PID_FILE%%)..."); - file = openPIDFile(); - pid = readPID(file); - - printf(">> Starting %%APP_TITLE%% %%PORTVERSION%%..."); - if (pid != -1) { - - /* Check if the process actually exists */ - result = existsProcess(pid); - if (result == 1) { - printf(" [ FAILED ]\n"); - fprintf(stderr, "%%CONTROL_SCRIPT_NAME%%: %%APP_TITLE%% %%PORTVERSION%% is already running, PID is %d.\n", pid); - exit(ERR_ALREADY_RUNNING); - } - } - - /* Check if the JDK home directory is actually a directory */ - result = stat("%%JAVA_HOME%%", &sb); - if (result != 0) { - printf(" [ FAILED ]\n"); - fprintf(stderr, "%%CONTROL_SCRIPT_NAME%%: Unable to stat %%JAVA_HOME%%: "); - perror(NULL); - exit(ERR_STAT_JAVA_HOME); - } - if (!S_ISDIR(sb.st_mode)) { - printf(" [ FAILED ]\n"); - fprintf(stderr, "%%CONTROL_SCRIPT_NAME%%: Java home directory %%JAVA_HOME%% is not a directory.\n"); - exit(ERR_JAVA_HOME_NOT_DIR); - } - - /* Check if the Java command is actually an executable regular file */ - result = stat("%%JAVA_HOME%%/%%JAVA_CMD%%", &sb); - if (result != 0) { - printf(" [ FAILED ]\n"); - fprintf(stderr, "%%CONTROL_SCRIPT_NAME%%: Unable to stat %%JAVA_HOME%%/%%JAVA_CMD%%: "); - perror(NULL); - exit(ERR_STAT_JAVA_CMD); - } - if (!S_ISREG(sb.st_mode)) { - printf(" [ FAILED ]\n"); - fprintf(stderr, "%%CONTROL_SCRIPT_NAME%%: Java command %%JAVA_HOME%%/%%JAVA_CMD%% is not a regular file.\n"); - exit(ERR_JAVA_CMD_NOT_FILE); - } - result = access("%%JAVA_HOME%%/%%JAVA_CMD%%", X_OK); - if (result != 0) { - printf(" [ FAILED ]\n"); - fprintf(stderr, "%%CONTROL_SCRIPT_NAME%%: Java command %%JAVA_HOME%%/%%JAVA_CMD%% is not executable: "); - perror(NULL); - exit(ERR_JAVA_CMD_NOT_EXECUTABLE); - } - - /* Change directory */ - result = chdir("%%APP_HOME%%"); - if (result < 0) { - printf(" [ FAILED ]\n"); - fprintf(stderr, "%%CONTROL_SCRIPT_NAME%%: Unable to access directory %%APP_HOME%%: "); - perror(NULL); - exit(ERR_CHDIR_TO_APP_HOME); - } - - /* See if the JAR file exists */ - result = access("%%APP_HOME%%/%%JAR_FILE%%", R_OK); - if (result < 0) { - printf(" [ FAILED ]\n"); - fprintf(stderr, "%%CONTROL_SCRIPT_NAME%%: Unable to access JAR file %%APP_HOME%%/%%JAR_FILE%%: "); - perror(NULL); - exit(ERR_ACCESS_JAR_FILE); - } - - /* Open the stdout log file */ - stdoutLogFile = open("%%STDOUT_LOG%%", O_WRONLY); - if (stdoutLogFile < 0) { - printf(" [ FAILED ]\n"); - fprintf(stderr, "%%CONTROL_SCRIPT_NAME%%: Unable to open %%STDOUT_LOG%% for writing: "); - perror(NULL); - exit(ERR_STDOUT_LOGFILE_OPEN); - } - lseek(stdoutLogFile, (off_t) 0, SEEK_END); - - /* Open the stderr log file */ - stderrLogFile = open("%%STDERR_LOG%%", O_WRONLY); - if (stderrLogFile < 0) { - printf(" [ FAILED ]\n"); - fprintf(stderr, "%%CONTROL_SCRIPT_NAME%%: Unable to open %%STDERR_LOG%% for writing: "); - perror(NULL); - exit(ERR_STDERR_LOGFILE_OPEN); - } - lseek(stderrLogFile, (off_t) 0, SEEK_END); - - /* Split this process in two */ - pid = fork(); - if (pid == -1) { - printf(" [ FAILED ]\n"); - fprintf(stderr, "%%CONTROL_SCRIPT_NAME%%: Unable to fork: "); - perror(NULL); - exit(ERR_FORK_FAILED); - } - - if (pid == 0) { - - /* Redirect stdout to log file */ - dup2(stdoutLogFile, STDOUT_FILENO); - - /* Redirect stderr to log file */ - dup2(stderrLogFile, STDERR_FILENO); - - /* TODO: Support redirection of both stdout and stderr to the same - file using pipe(2) */ - - /* Execute the command */ - execl("%%JAVA_HOME%%/%%JAVA_CMD%%", "%%JAVA_HOME%%/%%JAVA_CMD%%", "-jar", %%JAVA_ARGS%% "%%JAR_FILE%%", %%JAR_ARGS%% NULL); - - fprintf(stderr, "%%CONTROL_SCRIPT_NAME%%: Unable to start %%APP_TITLE%% %%PORTVERSION%% since '%%JAVA_HOME%%/%%JAVA_CMD%% -jar %%JAR_FILE%%' in %%APP_HOME%%: "); - perror(NULL); - } else { - printf(" [ DONE ]\n"); - writePID(file, pid); - } -} - -/** - * Stops the daemon. - */ -void stop(void) { - - int file; - int pid; - - /* Open and read the PID file */ - printf(">> Reading PID file (%%PID_FILE%%)..."); - file = openPIDFile(); - pid = readPID(file); - - printf(">> Checking if %%APP_TITLE%% %%PORTVERSION%% is running..."); - - /* If there is a PID, see if the process still exists */ - if (pid != -1) { - int result = kill(pid, 0); - if (result != 0 && errno == ESRCH) { - ftruncate(file, (off_t) 0); - pid = -1; - } - } - - /* If there is no running process, produce an error */ - if (pid == -1) { - printf(" [ FAILED ]\n"); - fprintf(stderr, "%%CONTROL_SCRIPT_NAME%%: %%APP_TITLE%% %%PORTVERSION%% is currently not running.\n"); - exit(ERR_NOT_RUNNING); - } - printf(" [ DONE ]\n"); - - /* Terminate the process */ - killProcess(pid); - - /* Clear the PID file */ - ftruncate(file, (off_t) 0); -} - - -/** - * Restarts the process. If it not currently running, then it will fail. - */ -void restart(void) { - stop(); - start(); -} |