static int ChangeUser(const char *user)
{
struct passwd *pas;
const char *err_msg;
/*
* Obtain password entry and change privileges
*/
pas = getpwnam(user);
if (pas == 0) {
crondlog("\011failed to get uid for %s", user);
return (-1);
}
setenv("USER", pas->pw_name, 1);
setenv("HOME", pas->pw_dir, 1);
setenv("SHELL", DEFAULT_SHELL, 1);
/*
* Change running state to the user in question
*/
err_msg = change_identity_e2str(pas);
if (err_msg) {
crondlog("\011%s for user %s", err_msg, user);
return (-1);
}
if (chdir(pas->pw_dir) < 0) {
crondlog("\011chdir failed: %s: %m", pas->pw_dir);
if (chdir(TMPDIR) < 0) {
crondlog("\011chdir failed: %s: %m", TMPDIR);
return (-1);
}
}
return (pas->pw_uid);
}
static void RunJob(const char *user, CronLine *line)
{
struct passwd *pas;
pid_t pid;
/* prepare things before vfork */
pas = getpwnam(user);
if (!pas) {
crondlog(LVL9 "can't get uid for %s", user);
goto err;
}
SetEnv(pas);
/* fork as the user in question and run program */
pid = vfork();
if (pid == 0) {
/* CHILD */
/* change running state to the user in question */
ChangeUser(pas);
if (DebugOpt) {
crondlog(LVL5 "child running %s", DEFAULT_SHELL);
}
execl(DEFAULT_SHELL, DEFAULT_SHELL, "-c", line->cl_Shell, NULL);
crondlog(ERR20 "can't exec, user %s cmd %s %s %s", user,
DEFAULT_SHELL, "-c", line->cl_Shell);
_exit(EXIT_SUCCESS);
}
if (pid < 0) {
/* FORK FAILED */
crondlog(ERR20 "can't vfork");
err:
pid = 0;
}
line->cl_Pid = pid;
}
static void RunJob(const char *user, CronLine * line)
{
/* Fork as the user in question and run program */
pid_t pid = fork();
if (pid == 0) {
/* CHILD */
/* Change running state to the user in question */
if (ChangeUser(user) < 0) {
exit(0);
}
#ifdef FEATURE_DEBUG_OPT
if (DebugOpt) {
crondlog("\005Child Running %s\n", DEFAULT_SHELL);
}
#endif
execl(DEFAULT_SHELL, DEFAULT_SHELL, "-c", line->cl_Shell, NULL);
crondlog("\024unable to exec, user %s cmd %s -c %s\n", user,
DEFAULT_SHELL, line->cl_Shell);
exit(0);
} else if (pid < 0) {
/* FORK FAILED */
crondlog("\024couldn't fork, user %s\n", user);
pid = 0;
}
line->cl_Pid = pid;
}
static void
ForkJob(const char *user, CronLine * line, int mailFd,
const char *prog, const char *cmd, const char *arg, const char *mailf)
{
/* Fork as the user in question and run program */
pid_t pid = fork();
line->cl_Pid = pid;
if (pid == 0) {
/* CHILD */
/* Change running state to the user in question */
if (ChangeUser(user) < 0) {
exit(0);
}
#ifdef FEATURE_DEBUG_OPT
if (DebugOpt) {
crondlog("\005Child Running %s\n", prog);
}
#endif
if (mailFd >= 0) {
dup2(mailFd, mailf != NULL);
dup2((mailf ? mailFd : 1), 2);
close(mailFd);
}
execl(prog, prog, cmd, arg, NULL);
crondlog("\024unable to exec, user %s cmd %s %s %s\n", user, prog, cmd, arg);
if (mailf) {
fdprintf(1, "Exec failed: %s -c %s\n", prog, arg);
}
exit(0);
} else if (pid < 0) {
/* FORK FAILED */
crondlog("\024couldn't fork, user %s\n", user);
line->cl_Pid = 0;
if (mailf) {
remove(mailf);
}
} else if (mailf) {
/* PARENT, FORK SUCCESS
* rename mail-file based on pid of process
*/
char mailFile2[128];
snprintf(mailFile2, sizeof(mailFile2), TMPDIR "/cron.%s.%d", user, pid);
rename(mailf, mailFile2);
}
/*
* Close the mail file descriptor.. we can't just leave it open in
* a structure, closing it later, because we might run out of descriptors
*/
if (mailFd >= 0) {
close(mailFd);
}
}
static void ChangeUser(struct passwd *pas)
{
/* careful: we're after vfork! */
change_identity(pas); /* - initgroups, setgid, setuid */
if (chdir(pas->pw_dir) < 0) {
crondlog(LVL9 "can't chdir(%s)", pas->pw_dir);
if (chdir(TMPDIR) < 0) {
crondlog(DIE9 "can't chdir(%s)", TMPDIR); /* exits */
}
}
}
static int TestJobs(time_t t1, time_t t2)
{
short nJobs = 0;
time_t t;
/* Find jobs > t1 and <= t2 */
for (t = t1 - t1 % 60; t <= t2; t += 60) {
if (t > t1) {
struct tm *tp = localtime(&t);
CronFile *file;
CronLine *line;
for (file = FileBase; file; file = file->cf_Next) {
#ifdef FEATURE_DEBUG_OPT
if (DebugOpt)
crondlog("\005FILE %s:\n", file->cf_User);
#endif
if (file->cf_Deleted)
continue;
for (line = file->cf_LineBase; line; line = line->cl_Next) {
#ifdef FEATURE_DEBUG_OPT
if (DebugOpt)
crondlog("\005 LINE %s\n", line->cl_Shell);
#endif
if (line->cl_Mins[tp->tm_min] && line->cl_Hrs[tp->tm_hour] &&
(line->cl_Days[tp->tm_mday] || line->cl_Dow[tp->tm_wday])
&& line->cl_Mons[tp->tm_mon]) {
#ifdef FEATURE_DEBUG_OPT
if (DebugOpt) {
crondlog("\005 JobToDo: %d %s\n",
line->cl_Pid, line->cl_Shell);
}
#endif
if (line->cl_Pid > 0) {
crondlog("\010 process already running: %s %s\n",
file->cf_User, line->cl_Shell);
} else if (line->cl_Pid == 0) {
line->cl_Pid = -1;
file->cf_Ready = 1;
++nJobs;
}
}
}
}
}
}
return (nJobs);
}
static void SynchronizeDir(void)
{
/* Attempt to delete the database. */
for (;;) {
CronFile *file;
for (file = FileBase; file && file->cf_Deleted; file = file->cf_Next);
if (file == NULL) {
break;
}
DeleteFile(file->cf_User);
}
/*
* Remove cron update file
*
* Re-chdir, in case directory was renamed & deleted, or otherwise
* screwed up.
*
* scan directory and add associated users
*/
remove(CRONUPDATE);
if (chdir(CDir) < 0) {
crondlog("\311unable to find %s\n", CDir);
}
{
DIR *dir = opendir(".");
struct dirent *den;
if (dir) {
while ((den = readdir(dir))) {
if (strchr(den->d_name, '.') != NULL) {
continue;
}
if (getpwnam(den->d_name)) {
SynchronizeFile(den->d_name);
} else {
crondlog("\007ignoring %s\n", den->d_name);
}
}
closedir(dir);
} else {
crondlog("\311Unable to open current dir!\n");
}
}
}
static void RunJob(const char *user, CronLine *line)
{
char mailFile[128];
int mailFd = -1;
line->cl_Pid = 0;
line->cl_MailFlag = 0;
if (line->cl_MailTo) {
/* open mail file - owner root so nobody can screw with it. */
snprintf(mailFile, sizeof(mailFile), "%s/cron.%s.%d", TMPDIR, user, getpid());
mailFd = open(mailFile, O_CREAT | O_TRUNC | O_WRONLY | O_EXCL | O_APPEND, 0600);
if (mailFd >= 0) {
line->cl_MailFlag = 1;
fdprintf(mailFd, "To: %s\nSubject: cron: %s\n\n", user,
line->cl_Shell);
line->cl_MailPos = lseek(mailFd, 0, SEEK_CUR);
} else {
crondlog(ERR20 "cannot create mail file %s for user %s, "
"discarding output", mailFile, user);
}
}
ForkJob(user, line, mailFd, DEFAULT_SHELL, "-c", line->cl_Shell, mailFile);
}
static void RunJobs(void)
{
CronFile *file;
CronLine *line;
for (file = FileBase; file; file = file->cf_Next) {
if (!file->cf_Ready)
continue;
file->cf_Ready = 0;
for (line = file->cf_LineBase; line; line = line->cl_Next) {
if (line->cl_Pid >= 0)
continue;
RunJob(file->cf_User, line);
crondlog(LVL8 "USER %s pid %3d cmd %s",
file->cf_User, (int)line->cl_Pid, line->cl_Shell);
if (line->cl_Pid < 0) {
file->cf_Ready = 1;
} else if (line->cl_Pid > 0) {
file->cf_Running = 1;
}
}
}
}
static void log8(const char *msg, ...)
{
va_list va;
va_start(va, msg);
crondlog(8, msg, va);
va_end(va);
}
static void RunJobs(void)
{
CronFile *file;
CronLine *line;
for (file = FileBase; file; file = file->cf_Next) {
if (file->cf_Ready) {
file->cf_Ready = 0;
for (line = file->cf_LineBase; line; line = line->cl_Next) {
if (line->cl_Pid < 0) {
RunJob(file->cf_User, line);
crondlog("\010USER %s pid %3d cmd %s\n",
file->cf_User, line->cl_Pid, line->cl_Shell);
if (line->cl_Pid < 0) {
file->cf_Ready = 1;
}
else if (line->cl_Pid > 0) {
file->cf_Running = 1;
}
}
}
}
}
}
/*
* TestJobs()
*
* determine which jobs need to be run. Under normal conditions, the
* period is about a minute (one scan). Worst case it will be one
* hour (60 scans).
*/
static int TestJobs(time_t t1, time_t t2)
{
int nJobs = 0;
time_t t;
/* Find jobs > t1 and <= t2 */
for (t = t1 - t1 % 60; t <= t2; t += 60) {
struct tm *tp;
CronFile *file;
CronLine *line;
if (t <= t1)
continue;
tp = localtime(&t);
for (file = FileBase; file; file = file->cf_Next) {
if (DebugOpt)
crondlog(LVL5 "file %s:", file->cf_User);
if (file->cf_Deleted)
continue;
for (line = file->cf_LineBase; line; line = line->cl_Next) {
if (DebugOpt)
crondlog(LVL5 " line %s", line->cl_Shell);
if (line->cl_Mins[tp->tm_min] && line->cl_Hrs[tp->tm_hour]
&& (line->cl_Days[tp->tm_mday] || line->cl_Dow[tp->tm_wday])
&& line->cl_Mons[tp->tm_mon]
) {
if (DebugOpt) {
crondlog(LVL5 " job: %d %s",
(int)line->cl_Pid, line->cl_Shell);
}
if (line->cl_Pid > 0) {
crondlog(LVL8 "user %s: process already running: %s",
file->cf_User, line->cl_Shell);
} else if (line->cl_Pid == 0) {
line->cl_Pid = -1;
file->cf_Ready = 1;
++nJobs;
}
}
}
}
}
return nJobs;
}
static void SynchronizeDir(void)
{
CronFile *file;
/* Attempt to delete the database. */
again:
for (file = FileBase; file; file = file->cf_Next) {
if (!file->cf_Deleted) {
DeleteFile(file->cf_User);
goto again;
}
}
/*
* Remove cron update file
*
* Re-chdir, in case directory was renamed & deleted, or otherwise
* screwed up.
*
* scan directory and add associated users
*/
unlink(CRONUPDATE);
if (chdir(CDir) < 0) {
crondlog(DIE9 "can't chdir(%s)", CDir);
}
{
DIR *dir = opendir(".");
struct dirent *den;
if (!dir)
crondlog(DIE9 "can't chdir(%s)", "."); /* exits */
while ((den = readdir(dir)) != NULL) {
if (strchr(den->d_name, '.') != NULL) {
continue;
}
if (getpwnam(den->d_name)) {
SynchronizeFile(den->d_name);
} else {
crondlog(LVL7 "ignoring %s", den->d_name);
}
}
closedir(dir);
}
}
static void RunJob(const char *user, CronLine * line)
{
char mailFile[128];
int mailFd;
line->cl_Pid = 0;
line->cl_MailFlag = 0;
/* open mail file - owner root so nobody can screw with it. */
snprintf(mailFile, sizeof(mailFile), TMPDIR "/cron.%s.%d", user, getpid());
mailFd = open(mailFile, O_CREAT | O_TRUNC | O_WRONLY | O_EXCL | O_APPEND, 0600);
if (mailFd >= 0) {
line->cl_MailFlag = 1;
fdprintf(mailFd, "To: %s\nSubject: cron: %s\n\n", user,
line->cl_Shell);
line->cl_MailPos = lseek(mailFd, 0, 1);
} else {
crondlog("\024unable to create mail file user %s file %s, output to /dev/null\n", user, mailFile);
}
ForkJob(user, line, mailFd, DEFAULT_SHELL, "-c", line->cl_Shell, mailFile);
}
int crond_main(int argc ATTRIBUTE_UNUSED, char **argv)
{
unsigned opt;
INIT_G();
/* "-b after -f is ignored", and so on for every pair a-b */
opt_complementary = "f-b:b-f:S-L:L-S" USE_DEBUG_CROND_OPTION(":d-l")
":l+:d+"; /* -l and -d have numeric param */
opt = getopt32(argv, "l:L:fbSc:" USE_DEBUG_CROND_OPTION("d:"),
&LogLevel, &LogFile, &CDir
USE_DEBUG_CROND_OPTION(,&LogLevel));
/* both -d N and -l N set the same variable: LogLevel */
if (!(opt & OPT_f)) {
/* close stdin, stdout, stderr.
* close unused descriptors - don't need them. */
bb_daemonize_or_rexec(DAEMON_CLOSE_EXTRA_FDS, argv);
}
if (!DebugOpt && LogFile == NULL) {
/* logging to syslog */
openlog(applet_name, LOG_CONS | LOG_PID, LOG_CRON);
logmode = LOGMODE_SYSLOG;
}
xchdir(CDir);
//signal(SIGHUP, SIG_IGN); /* ? original crond dies on HUP... */
setenv("SHELL", DEFAULT_SHELL, 1); /* once, for all future children */
crondlog(LVL9 "crond (busybox "BB_VER") started, log level %d", LogLevel);
SynchronizeDir();
/* main loop - synchronize to 1 second after the minute, minimum sleep
* of 1 second. */
{
time_t t1 = time(NULL);
time_t t2;
long dt;
int rescan = 60;
int sleep_time = 60;
write_pidfile("/var/run/crond.pid");
for (;;) {
sleep((sleep_time + 1) - (time(NULL) % sleep_time));
t2 = time(NULL);
dt = (long)t2 - (long)t1;
/*
* The file 'cron.update' is checked to determine new cron
* jobs. The directory is rescanned once an hour to deal
* with any screwups.
*
* check for disparity. Disparities over an hour either way
* result in resynchronization. A reverse-indexed disparity
* less then an hour causes us to effectively sleep until we
* match the original time (i.e. no re-execution of jobs that
* have just been run). A forward-indexed disparity less then
* an hour causes intermediate jobs to be run, but only once
* in the worst case.
*
* when running jobs, the inequality used is greater but not
* equal to t1, and less then or equal to t2.
*/
if (--rescan == 0) {
rescan = 60;
SynchronizeDir();
}
CheckUpdates();
if (DebugOpt)
crondlog(LVL5 "wakeup dt=%ld", dt);
if (dt < -60 * 60 || dt > 60 * 60) {
crondlog(WARN9 "time disparity of %d minutes detected", dt / 60);
} else if (dt > 0) {
TestJobs(t1, t2);
RunJobs();
sleep(5);
if (CheckJobs() > 0) {
sleep_time = 10;
} else {
sleep_time = 60;
}
}
t1 = t2;
}
}
return 0; /* not reached */
}
int eooqd_main(int argc, char *argv[])
{
int r;
char *pid_file_name, *instance_id_str;
char *check;
struct event *checkQueueEvent, *rePostEvent;
struct timeval tv;
struct rlimit limit;
atlas_id= NULL;
instance_id_str= NULL;
pid_file_name= NULL;
queue_id= "";
(void)getopt32(argv, "A:i:P:q:", &atlas_id, &instance_id_str,
&pid_file_name, &queue_id);
if (argc != optind+1)
{
bb_show_usage();
return 1;
}
instance_id= 0;
if (instance_id_str)
{
instance_id= strtoul(instance_id_str, &check, 0);
if (check[0] != '\0')
{
report("unable to parse instance id '%s'",
instance_id_str);
return 1;
}
}
if(pid_file_name)
{
write_pidfile(pid_file_name);
}
state = xzalloc(sizeof(*state));
state->atlas_id= atlas_id;
state->queue_file= argv[optind];
state->max_busy= 10;
state->slots= xzalloc(sizeof(*state->slots) * state->max_busy);
if (strlen(state->queue_file) + strlen(SUFFIX) + 1 >
sizeof(state->curr_qfile))
{
report("filename too long ('%s')", state->queue_file);
return 1;
}
strlcpy(state->curr_qfile, state->queue_file,
sizeof(state->curr_qfile));
strlcat(state->curr_qfile, SUFFIX, sizeof(state->curr_qfile));
signal(SIGQUIT, SIG_DFL);
limit.rlim_cur= RLIM_INFINITY;
limit.rlim_max= RLIM_INFINITY;
setrlimit(RLIMIT_CORE, &limit);
/* Create libevent event base */
EventBase= event_base_new();
if (!EventBase)
{
crondlog(DIE9 "event_base_new failed"); /* exits */
}
DnsBase= evdns_base_new(EventBase, 1 /*initialize*/);
if (!DnsBase)
{
event_base_free(EventBase);
crondlog(DIE9 "evdns_base_new failed"); /* exits */
}
checkQueueEvent= event_new(EventBase, -1, EV_TIMEOUT|EV_PERSIST,
checkQueue, NULL);
if (!checkQueueEvent)
crondlog(DIE9 "event_new failed"); /* exits */
tv.tv_sec= 1;
tv.tv_usec= 0;
event_add(checkQueueEvent, &tv);
rePostEvent= event_new(EventBase, -1, EV_TIMEOUT|EV_PERSIST,
re_post, NULL);
if (!rePostEvent)
crondlog(DIE9 "event_new failed"); /* exits */
tv.tv_sec= 60;
tv.tv_usec= 0;
event_add(rePostEvent, &tv);
r= event_base_loop(EventBase, 0);
if (r != 0)
crondlog(LVL9 "event_base_loop failed");
return 0;
}
static char *ParseField(char *user, char *ary, int modvalue, int off,
const char *names, char *ptr)
/* 'names' is a pointer to a set of 3-char abbreviations */
{
char *base = ptr;
int n1 = -1;
int n2 = -1;
if (base == NULL) {
return NULL;
}
while (!isspace(*ptr)) {
int skip = 0;
/* Handle numeric digit or symbol or '*' */
if (*ptr == '*') {
n1 = 0; /* everything will be filled */
n2 = modvalue - 1;
skip = 1;
++ptr;
} else if (isdigit(*ptr)) {
if (n1 < 0) {
n1 = strtol(ptr, &ptr, 10) + off;
} else {
n2 = strtol(ptr, &ptr, 10) + off;
}
skip = 1;
} else if (names) {
int i;
for (i = 0; names[i]; i += 3) {
/* was using strncmp before... */
if (strncasecmp(ptr, &names[i], 3) == 0) {
ptr += 3;
if (n1 < 0) {
n1 = i / 3;
} else {
n2 = i / 3;
}
skip = 1;
break;
}
}
}
/* handle optional range '-' */
if (skip == 0) {
crondlog(WARN9 "user %s: parse error at %s", user, base);
return NULL;
}
if (*ptr == '-' && n2 < 0) {
++ptr;
continue;
}
/*
* collapse single-value ranges, handle skipmark, and fill
* in the character array appropriately.
*/
if (n2 < 0) {
n2 = n1;
}
if (*ptr == '/') {
skip = strtol(ptr + 1, &ptr, 10);
}
/*
* fill array, using a failsafe is the easiest way to prevent
* an endless loop
*/
{
int s0 = 1;
int failsafe = 1024;
--n1;
do {
n1 = (n1 + 1) % modvalue;
if (--s0 == 0) {
ary[n1 % modvalue] = 1;
s0 = skip;
}
if (--failsafe == 0) {
crondlog(WARN9 "user %s: parse error at %s", user, base);
return NULL;
}
} while (n1 != n2);
}
if (*ptr != ',') {
break;
}
++ptr;
n1 = -1;
n2 = -1;
}
if (!isspace(*ptr)) {
crondlog(WARN9 "user %s: parse error at %s", user, base);
return NULL;
}
if (DebugOpt && (LogLevel <= 5)) { /* like LVL5 */
/* can't use crondlog, it inserts '\n' */
int i;
for (i = 0; i < modvalue; ++i)
fprintf(stderr, "%d", (unsigned char)ary[i]);
fputc('\n', stderr);
}
return skip_whitespace(ptr);
}
static void SynchronizeFile(const char *fileName)
{
FILE *fi;
struct stat sbuf;
int maxEntries;
int maxLines;
char buf[1024];
#if ENABLE_FEATURE_CROND_CALL_SENDMAIL
char *mailTo = NULL;
#endif
if (!fileName)
return;
DeleteFile(fileName);
fi = fopen(fileName, "r");
if (!fi)
return;
maxEntries = MAXLINES;
if (strcmp(fileName, "root") == 0) {
maxEntries = 65535;
}
maxLines = maxEntries * 10;
if (fstat(fileno(fi), &sbuf) == 0 && sbuf.st_uid == DaemonUid) {
CronFile *file = xzalloc(sizeof(CronFile));
CronLine **pline;
file->cf_User = xstrdup(fileName);
pline = &file->cf_LineBase;
while (fgets(buf, sizeof(buf), fi) != NULL && --maxLines) {
CronLine *line;
char *ptr;
trim(buf);
if (buf[0] == '\0' || buf[0] == '#') {
continue;
}
if (--maxEntries == 0) {
break;
}
if (DebugOpt) {
crondlog(LVL5 "user:%s entry:%s", fileName, buf);
}
/* check if line is setting MAILTO= */
if (0 == strncmp("MAILTO=", buf, 7)) {
#if ENABLE_FEATURE_CROND_CALL_SENDMAIL
free(mailTo);
mailTo = (buf[7]) ? xstrdup(buf+7) : NULL;
#endif /* otherwise just ignore such lines */
continue;
}
*pline = line = xzalloc(sizeof(CronLine));
/* parse date ranges */
ptr = ParseField(file->cf_User, line->cl_Mins, 60, 0, NULL, buf);
ptr = ParseField(file->cf_User, line->cl_Hrs, 24, 0, NULL, ptr);
ptr = ParseField(file->cf_User, line->cl_Days, 32, 0, NULL, ptr);
ptr = ParseField(file->cf_User, line->cl_Mons, 12, -1, MonAry, ptr);
ptr = ParseField(file->cf_User, line->cl_Dow, 7, 0, DowAry, ptr);
/* check failure */
if (ptr == NULL) {
free(line);
continue;
}
/*
* fix days and dow - if one is not "*" and the other
* is "*", the other is set to 0, and vise-versa
*/
FixDayDow(line);
#if ENABLE_FEATURE_CROND_CALL_SENDMAIL
/* copy mailto (can be NULL) */
line->cl_MailTo = xstrdup(mailTo);
#endif
/* copy command */
line->cl_Shell = xstrdup(ptr);
if (DebugOpt) {
crondlog(LVL5 " command:%s", ptr);
}
pline = &line->cl_Next;
}
*pline = NULL;
file->cf_Next = FileBase;
FileBase = file;
if (maxLines == 0 || maxEntries == 0) {
crondlog(WARN9 "user %s: too many lines", fileName);
}
}
fclose(fi);
}
static void SynchronizeFile(const char *fileName)
{
int maxEntries = MAXLINES;
int maxLines;
char buf[1024];
if (strcmp(fileName, "root") == 0) {
maxEntries = 65535;
}
maxLines = maxEntries * 10;
if (fileName) {
FILE *fi;
DeleteFile(fileName);
fi = fopen(fileName, "r");
if (fi != NULL) {
struct stat sbuf;
if (fstat(fileno(fi), &sbuf) == 0 && sbuf.st_uid == DaemonUid) {
CronFile *file = calloc(1, sizeof(CronFile));
CronLine **pline;
file->cf_User = strdup(fileName);
pline = &file->cf_LineBase;
while (fgets(buf, sizeof(buf), fi) != NULL && --maxLines) {
CronLine line;
char *ptr;
trim(buf);
if (buf[0] == 0 || buf[0] == '#') {
continue;
}
if (--maxEntries == 0) {
break;
}
memset(&line, 0, sizeof(line));
#ifdef FEATURE_DEBUG_OPT
if (DebugOpt) {
crondlog("\111User %s Entry %s\n", fileName, buf);
}
#endif
/* parse date ranges */
ptr = ParseField(file->cf_User, line.cl_Mins, 60, 0, NULL, buf);
ptr = ParseField(file->cf_User, line.cl_Hrs, 24, 0, NULL, ptr);
ptr = ParseField(file->cf_User, line.cl_Days, 32, 0, NULL, ptr);
ptr = ParseField(file->cf_User, line.cl_Mons, 12, -1, MonAry, ptr);
ptr = ParseField(file->cf_User, line.cl_Dow, 7, 0, DowAry, ptr);
/* check failure */
if (ptr == NULL) {
continue;
}
/*
* fix days and dow - if one is not * and the other
* is *, the other is set to 0, and vise-versa
*/
FixDayDow(&line);
*pline = calloc(1, sizeof(CronLine));
**pline = line;
/* copy command */
(*pline)->cl_Shell = strdup(ptr);
#ifdef FEATURE_DEBUG_OPT
if (DebugOpt) {
crondlog("\111 Command %s\n", ptr);
}
#endif
pline = &((*pline)->cl_Next);
}
*pline = NULL;
file->cf_Next = FileBase;
FileBase = file;
if (maxLines == 0 || maxEntries == 0) {
crondlog("\111Maximum number of lines reached for user %s\n", fileName);
}
}
fclose(fi);
}
}
}
static char *ParseField(char *user, char *ary, int modvalue, int off,
const char *const *names, char *ptr)
{
char *base = ptr;
int n1 = -1;
int n2 = -1;
if (base == NULL) {
return (NULL);
}
while (*ptr != ' ' && *ptr != '\t' && *ptr != '\n') {
int skip = 0;
/* Handle numeric digit or symbol or '*' */
if (*ptr == '*') {
n1 = 0; /* everything will be filled */
n2 = modvalue - 1;
skip = 1;
++ptr;
} else if (*ptr >= '0' && *ptr <= '9') {
if (n1 < 0) {
n1 = strtol(ptr, &ptr, 10) + off;
} else {
n2 = strtol(ptr, &ptr, 10) + off;
}
skip = 1;
} else if (names) {
int i;
for (i = 0; names[i]; ++i) {
if (strncmp(ptr, names[i], strlen(names[i])) == 0) {
break;
}
}
if (names[i]) {
ptr += strlen(names[i]);
if (n1 < 0) {
n1 = i;
} else {
n2 = i;
}
skip = 1;
}
}
/* handle optional range '-' */
if (skip == 0) {
crondlog("\111failed user %s parsing %s\n", user, base);
return (NULL);
}
if (*ptr == '-' && n2 < 0) {
++ptr;
continue;
}
/*
* collapse single-value ranges, handle skipmark, and fill
* in the character array appropriately.
*/
if (n2 < 0) {
n2 = n1;
}
if (*ptr == '/') {
skip = strtol(ptr + 1, &ptr, 10);
}
/*
* fill array, using a failsafe is the easiest way to prevent
* an endless loop
*/
{
int s0 = 1;
int failsafe = 1024;
--n1;
do {
n1 = (n1 + 1) % modvalue;
if (--s0 == 0) {
ary[n1 % modvalue] = 1;
s0 = skip;
}
}
while (n1 != n2 && --failsafe);
if (failsafe == 0) {
crondlog("\111failed user %s parsing %s\n", user, base);
return (NULL);
}
}
if (*ptr != ',') {
break;
}
++ptr;
n1 = -1;
n2 = -1;
}
if (*ptr != ' ' && *ptr != '\t' && *ptr != '\n') {
crondlog("\111failed user %s parsing %s\n", user, base);
return (NULL);
}
while (*ptr == ' ' || *ptr == '\t' || *ptr == '\n') {
++ptr;
}
#ifdef FEATURE_DEBUG_OPT
if (DebugOpt) {
int i;
for (i = 0; i < modvalue; ++i) {
crondlog("\005%d", ary[i]);
}
crondlog("\005\n");
}
#endif
return (ptr);
}
int crond_main(int ac, char **av)
{
unsigned long opt;
char *lopt, *Lopt, *copt;
#ifdef FEATURE_DEBUG_OPT
char *dopt;
bb_opt_complementally = "f-b:b-f:S-L:L-S:d-l";
#else
bb_opt_complementally = "f-b:b-f:S-L:L-S";
#endif
opterr = 0; /* disable getopt 'errors' message. */
opt = bb_getopt_ulflags(ac, av, "l:L:fbSc:"
#ifdef FEATURE_DEBUG_OPT
"d:"
#endif
, &lopt, &Lopt, &copt
#ifdef FEATURE_DEBUG_OPT
, &dopt
#endif
);
if (opt & 1) {
LogLevel = atoi(lopt);
}
if (opt & 2) {
if (*Lopt != 0) {
LogFile = Lopt;
}
}
if (opt & 32) {
if (*copt != 0) {
CDir = copt;
}
}
#ifdef FEATURE_DEBUG_OPT
if (opt & 64) {
DebugOpt = atoi(dopt);
LogLevel = 0;
}
#endif
/*
* change directory
*/
if (chdir(CDir) != 0) {
bb_perror_msg_and_die("%s", CDir);
}
signal(SIGHUP, SIG_IGN); /* hmm.. but, if kill -HUP original
* version - his died. ;(
*/
/*
* close stdin and stdout, stderr.
* close unused descriptors - don't need.
* optional detach from controlling terminal
*/
if (!(opt & 4)) {
#if defined(__uClinux__)
/* reexec for vfork() do continue parent */
vfork_daemon_rexec(1, 0, ac, av, "-f");
#else /* uClinux */
if (daemon(1, 0) < 0) {
bb_perror_msg_and_die("daemon");
}
#endif /* uClinux */
}
(void) startlogger(); /* need if syslog mode selected */
/*
* main loop - synchronize to 1 second after the minute, minimum sleep
* of 1 second.
*/
crondlog("\011%s " VERSION " dillon, started, log level %d\n",
bb_applet_name, LogLevel);
SynchronizeDir();
{
time_t t1 = time(NULL);
time_t t2;
long dt;
short rescan = 60;
short sleep_time = 60;
for (;;) {
sleep((sleep_time + 1) - (short) (time(NULL) % sleep_time));
t2 = time(NULL);
dt = t2 - t1;
/*
* The file 'cron.update' is checked to determine new cron
* jobs. The directory is rescanned once an hour to deal
* with any screwups.
*
* check for disparity. Disparities over an hour either way
* result in resynchronization. A reverse-indexed disparity
* less then an hour causes us to effectively sleep until we
* match the original time (i.e. no re-execution of jobs that
* have just been run). A forward-indexed disparity less then
* an hour causes intermediate jobs to be run, but only once
* in the worst case.
*
* when running jobs, the inequality used is greater but not
* equal to t1, and less then or equal to t2.
*/
if (--rescan == 0) {
rescan = 60;
SynchronizeDir();
}
CheckUpdates();
#ifdef FEATURE_DEBUG_OPT
if (DebugOpt)
crondlog("\005Wakeup dt=%d\n", dt);
#endif
if (dt < -60 * 60 || dt > 60 * 60) {
t1 = t2;
crondlog("\111time disparity of %d minutes detected\n", dt / 60);
} else if (dt > 0) {
TestJobs(t1, t2);
RunJobs();
sleep(5);
if (CheckJobs() > 0) {
sleep_time = 10;
} else {
sleep_time = 60;
}
t1 = t2;
}
}
}
/* not reached */
}
static void
ForkJob(const char *user, CronLine *line, int mailFd,
const char *prog, const char *cmd, const char *arg,
const char *mail_filename)
{
struct passwd *pas;
pid_t pid;
/* prepare things before vfork */
pas = getpwnam(user);
if (!pas) {
crondlog(LVL9 "can't get uid for %s", user);
goto err;
}
SetEnv(pas);
pid = vfork();
if (pid == 0) {
/* CHILD */
/* change running state to the user in question */
ChangeUser(pas);
if (DebugOpt) {
crondlog(LVL5 "child running %s", prog);
}
if (mailFd >= 0) {
xmove_fd(mailFd, mail_filename ? 1 : 0);
dup2(1, 2);
}
execl(prog, prog, cmd, arg, NULL);
crondlog(ERR20 "can't exec, user %s cmd %s %s %s", user, prog, cmd, arg);
if (mail_filename) {
fdprintf(1, "Exec failed: %s -c %s\n", prog, arg);
}
_exit(EXIT_SUCCESS);
}
line->cl_Pid = pid;
if (pid < 0) {
/* FORK FAILED */
crondlog(ERR20 "can't vfork");
err:
line->cl_Pid = 0;
if (mail_filename) {
unlink(mail_filename);
}
} else if (mail_filename) {
/* PARENT, FORK SUCCESS
* rename mail-file based on pid of process
*/
char mailFile2[128];
snprintf(mailFile2, sizeof(mailFile2), "%s/cron.%s.%d", TMPDIR, user, pid);
rename(mail_filename, mailFile2); // TODO: xrename?
}
/*
* Close the mail file descriptor.. we can't just leave it open in
* a structure, closing it later, because we might run out of descriptors
*/
if (mailFd >= 0) {
close(mailFd);
}
}
int eooqd_main(int argc, char *argv[])
{
int r;
size_t len;
char *pid_file_name, *interface_name, *instance_id_str;
char *check;
struct event *checkQueueEvent, *rePostEvent;
struct timeval tv;
struct rlimit limit;
struct stat sb;
atlas_id= NULL;
interface_name= NULL;
instance_id_str= NULL;
pid_file_name= NULL;
queue_id= "";
(void)getopt32(argv, "A:I:i:P:q:", &atlas_id, &interface_name, &instance_id_str,
&pid_file_name, &queue_id);
if (argc != optind+1)
{
bb_show_usage();
return 1;
}
instance_id= 0;
if (instance_id_str)
{
instance_id= strtoul(instance_id_str, &check, 0);
if (check[0] != '\0')
{
report("unable to parse instance id '%s'",
instance_id_str);
return 1;
}
}
if (interface_name)
{
len= strlen(RESOLV_CONF) + 1 +
strlen(interface_name) + 1;
resolv_conf= malloc(len);
snprintf(resolv_conf, len, "%s.%s",
RESOLV_CONF, interface_name);
/* Check if this resolv.conf exists. If it doen't, switch
* to the standard one.
*/
if (stat(resolv_conf, &sb) == -1)
{
free(resolv_conf);
resolv_conf= strdup(RESOLV_CONF);
}
}
else
{
resolv_conf= strdup(RESOLV_CONF);
}
if(pid_file_name)
{
write_pidfile(pid_file_name);
}
state = xzalloc(sizeof(*state));
state->atlas_id= atlas_id;
state->queue_file= argv[optind];
state->max_busy= 10;
state->slots= xzalloc(sizeof(*state->slots) * state->max_busy);
if (strlen(state->queue_file) + strlen(SUFFIX) + 1 >
sizeof(state->curr_qfile))
{
report("filename too long ('%s')", state->queue_file);
return 1;
}
strlcpy(state->curr_qfile, state->queue_file,
sizeof(state->curr_qfile));
strlcat(state->curr_qfile, SUFFIX, sizeof(state->curr_qfile));
snprintf(output_filename, sizeof(output_filename),
OOQD_OUT_PREFIX "%s/ooq.out", queue_id);
signal(SIGQUIT, SIG_DFL);
limit.rlim_cur= RLIM_INFINITY;
limit.rlim_max= RLIM_INFINITY;
setrlimit(RLIMIT_CORE, &limit);
/* Ignore SIGPIPE, broken TCP sessions may trigger them */
signal(SIGPIPE, SIG_IGN);
/* Create libevent event base */
EventBase= event_base_new();
if (!EventBase)
{
crondlog(DIE9 "event_base_new failed"); /* exits */
}
DnsBase= evdns_base_new(EventBase, 0 /*initialize*/);
if (!DnsBase)
{
event_base_free(EventBase);
crondlog(DIE9 "evdns_base_new failed"); /* exits */
}
if (interface_name)
{
r= evdns_base_set_interface(DnsBase, interface_name);
if (r == -1)
{
event_base_free(EventBase);
crondlog(DIE9 "evdns_base_set_interface failed");
/* exits */
}
}
r = evdns_base_resolv_conf_parse(DnsBase, DNS_OPTIONS_ALL,
resolv_conf);
if (r == -1)
{
event_base_free(EventBase);
crondlog(DIE9 "evdns_base_resolv_conf_parse failed"); /* exits */
}
checkQueueEvent= event_new(EventBase, -1, EV_TIMEOUT|EV_PERSIST,
checkQueue, NULL);
if (!checkQueueEvent)
crondlog(DIE9 "event_new failed"); /* exits */
tv.tv_sec= 1;
tv.tv_usec= 0;
event_add(checkQueueEvent, &tv);
rePostEvent= event_new(EventBase, -1, EV_TIMEOUT|EV_PERSIST,
re_post, NULL);
if (!rePostEvent)
crondlog(DIE9 "event_new failed"); /* exits */
tv.tv_sec= 60;
tv.tv_usec= 0;
event_add(rePostEvent, &tv);
r= event_base_loop(EventBase, 0);
if (r != 0)
crondlog(LVL9 "event_base_loop failed");
return 0;
}
