Server : Apache
System : Linux profile 3.10.0-1160.88.1.el7.x86_64 #1 SMP Tue Mar 7 15:41:52 UTC 2023 x86_64
User : apache ( 48)
PHP Version : 8.0.28
Disable Function : NONE
Directory : /Data/.backup/script/fcron-3.2.0/
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Server : Apache System : Linux profile 3.10.0-1160.88.1.el7.x86_64 #1 SMP Tue Mar 7 15:41:52 UTC 2023 x86_64 User : apache ( 48) PHP Version : 8.0.28 Disable Function : NONE Directory : /Data/.backup/script/fcron-3.2.0/ |
/*
* FCRON - periodic command scheduler
*
* Copyright 2000-2014 Thibault Godouet <fcron@free.fr>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* The GNU General Public License can also be found in the file
* `LICENSE' that comes with the fcron source distribution.
*/
#include "fcron.h"
#include "conf.h"
#include "database.h"
int read_file(const char *file_name, cf_t * cf, int is_system_startup);
int add_line_to_file(cl_t * cl, cf_t * cf, uid_t runas, char *runas_str,
time_t t_save, int is_system_startup);
int read_strn(int fd, char **str, short int size);
int read_type(int fd, short int *type, short int *size);
void synchronize_file(char *file_name, int is_system_startup);
/* this is used to create a list of files to remove, to add */
typedef struct list_t {
char *str;
struct list_t *next;
} list_t;
void
reload_all(const char *dir_name)
/* save all current configuration, remove it from the memory,
* and reload from dir_name */
{
cf_t *f = NULL;
explain("Removing current configuration from memory");
f = file_base;
while (f != NULL) {
if (f->cf_running > 0)
wait_all(&f->cf_running);
save_file(f);
delete_file(f->cf_user);
/* delete_file remove the f file from the list :
* next file to remove is now pointed by file_base. */
f = file_base;
}
synchronize_dir(dir_name, 0);
}
void
synchronize_dir(const char *dir_name, int is_system_startup)
/* read dir_name and create three list of files to remove,
* new files and normal files. Then remove each file
* listed in the first list, then read normal files,
* finally add new files. */
{
list_t *rm_list = NULL;
list_t *new_list = NULL;
list_t *file_list = NULL;
list_t *list_cur = NULL;
DIR *dir;
struct dirent *den;
if (strcmp(dir_name, ".") == 0)
explain("updating configuration from %s", fcrontabs);
else
explain("updating configuration from %s", dir_name);
if ((dir = opendir("."))) {
while ((den = readdir(dir))) {
if (strncmp(den->d_name, "rm.", 3) == 0) {
/* this is a file to remove from database */
Alloc(list_cur, list_t);
list_cur->str = strdup2(den->d_name);
list_cur->next = rm_list;
rm_list = list_cur;
}
else if (strncmp(den->d_name, "new.", 4) == 0) {
/* this is a file to append to database */
Alloc(list_cur, list_t);
list_cur->str = strdup2(den->d_name);
list_cur->next = new_list;
new_list = list_cur;
}
else if (strchr(den->d_name, '.') != NULL)
continue;
else
/* this is a normal file : if file_base is not null,
* so if a database has already been created, we
* ignore it */
if (file_base == NULL) {
Alloc(list_cur, list_t);
list_cur->str = strdup2(den->d_name);
list_cur->next = file_list;
file_list = list_cur;
}
}
closedir(dir);
}
else
die("Unable to open current dir!");
/* proceed to adds or removes */
/* begin by removing files which are no longer wanted */
for (list_cur = rm_list; list_cur; list_cur = list_cur->next) {
explain("removing file %s", list_cur->str + 3);
delete_file(list_cur->str + 3); /* len("rm.") = 3 */
if (remove(list_cur->str + 3) != 0 && errno != ENOENT)
error_e("Could not remove %s", list_cur->str + 3);
if (remove(list_cur->str) != 0 && errno != ENOENT)
error_e("Could not remove %s", list_cur->str);
}
/* then add normal files, if any, to database */
for (list_cur = file_list; list_cur; list_cur = list_cur->next) {
errno = 0;
if (getpwnam(list_cur->str)
#ifdef SYSFCRONTAB
|| strcmp(list_cur->str, SYSFCRONTAB) == 0
#endif
) {
explain("adding file %s", list_cur->str);
synchronize_file(list_cur->str, is_system_startup);
}
else
error_e("ignoring file \"%s\" : not in passwd file.",
list_cur->str);
}
/* finally add new files */
for (list_cur = new_list; list_cur; list_cur = list_cur->next) {
/* len("new.") = 4 : */
errno = 0;
if (getpwnam(list_cur->str + 4)
#ifdef SYSFCRONTAB
|| strcmp(list_cur->str + 4, SYSFCRONTAB) == 0
#endif
) {
explain("adding new file %s", list_cur->str + 4);
synchronize_file(list_cur->str, is_system_startup);
}
else
error_e("ignoring file %s : not in passwd file.",
(list_cur->str + 4));
}
/* free lists */
{
list_t *l = NULL;
list_t *next = NULL;
next = rm_list;
while ((l = next) != NULL) {
next = l->next;
Free_safe(l->str);
Free_safe(l);
}
next = new_list;
while ((l = next) != NULL) {
next = l->next;
Free_safe(l->str);
Free_safe(l);
}
next = file_list;
while ((l = next) != NULL) {
next = l->next;
Free_safe(l->str);
Free_safe(l);
}
}
}
void
synchronize_file(char *file_name, int is_system_startup)
{
cf_t *cur_f = NULL;
char *user = NULL;
if (strchr(file_name, '.') != NULL) {
/* this is a new file : we have to check if there is an old
* version in database in order to keep a maximum of fields
* (cl_nextexe) to their current value */
cf_t *prev = NULL;
/* set user name */
/* we add 4 to file_name pointer because of the "new."
* string at the beginning of a new file */
user = (file_name + 4);
for (cur_f = file_base; cur_f; cur_f = cur_f->cf_next) {
if (strcmp(user, cur_f->cf_user) == 0)
break;
prev = cur_f;
}
if (cur_f != NULL) {
/* an old version of this file exist in database */
cf_t *old = NULL;
cl_t *old_l = NULL;
cl_t *new_l = NULL;
/* size used when comparing two line :
* it's the size of all time table (mins, days ...) */
const size_t size = (bitstr_size(60) + bitstr_size(24) +
bitstr_size(32) + bitstr_size(12) +
bitstr_size(7));
old = cur_f;
/* load new file */
Alloc(cur_f, cf_t);
if (read_file(file_name, cur_f, is_system_startup) != 0) {
/* an error as occured */
return;
}
/* assign old pointer to the old file, and move it to the first
* place of the list : delete_file() only remove the first
* occurrence of the file which has the name given in argument */
if (prev != NULL) {
prev->cf_next = old->cf_next;
old->cf_next = file_base;
file_base = old;
}
else
/* this is the first file in the list : no need to move it */
;
/* compare each lines between the new and the old
* version of the file */
for (new_l = cur_f->cf_line_base; new_l; new_l = new_l->cl_next)
for (old_l = old->cf_line_base; old_l; old_l = old_l->cl_next) {
/* compare the shell command and the fields
* from cl_mins down to cl_runfreq or the timefreq */
if (strcmp(new_l->cl_shell, old_l->cl_shell) == 0
&& ((is_freq(new_l->cl_option)
&& new_l->cl_timefreq == old_l->cl_timefreq)
|| (is_td(new_l->cl_option)
&& memcmp(&(new_l->cl_mins), &(old_l->cl_mins),
size) == 0
&& is_dayor(new_l->cl_option) ==
is_dayor(old_l->cl_option))
)) {
if (new_l->cl_runfreq == old_l->cl_runfreq)
new_l->cl_remain = old_l->cl_remain;
/* check if there is a change about the tz diff */
if ((new_l->cl_file->cf_tzdiff !=
old_l->cl_file->cf_tzdiff) &&
(old_l->cl_nextexe - old_l->cl_file->cf_tzdiff
+ new_l->cl_file->cf_tzdiff > now))
new_l->cl_nextexe = old_l->cl_nextexe
- old_l->cl_file->cf_tzdiff +
new_l->cl_file->cf_tzdiff;
else
new_l->cl_nextexe = old_l->cl_nextexe;
if (is_runonce(new_l->cl_option)
&& is_runonce(old_l->cl_option)
&& is_hasrun(old_l->cl_option)) {
explain
(" from last conf: job '%s' with runonce set has "
"already run since last system startup: not "
"re-scheduling.", new_l->cl_shell);
set_hasrun(new_l->cl_option);
/* job has already run: remove from the queue */
job_queue_remove(new_l);
}
else
/* update the position in the queue */
insert_nextexe(new_l);
if (debug_opt && !is_hasrun(new_l->cl_option)) {
struct tm *ftime;
ftime = localtime(&new_l->cl_nextexe);
debug
(" from last conf: '%s' next exec %04d-%02d-%02d"
" wday:%d %02d:%02d:%02d (system time)",
new_l->cl_shell, (ftime->tm_year + 1900),
(ftime->tm_mon + 1), ftime->tm_mday,
ftime->tm_wday, ftime->tm_hour, ftime->tm_min,
ftime->tm_sec);
}
break;
}
}
/* remove old file from the list */
delete_file(user);
/* insert new file in the list */
cur_f->cf_next = file_base;
file_base = cur_f;
/* save final file */
save_file(cur_f);
/* delete new.user file */
if (remove(file_name) != 0)
error_e("could not remove %s", file_name);
}
else {
/* no old version exist in database : load this file
* as a normal file, but change its name */
Alloc(cur_f, cf_t);
if (read_file(file_name, cur_f, is_system_startup) != 0) {
/* an error as occured */
return;
}
/* insert the file in the list */
cur_f->cf_next = file_base;
file_base = cur_f;
/* save as a normal file */
save_file(cur_f);
/* delete new.user file */
if (remove(file_name) != 0)
error_e("could not remove %s", file_name);
}
}
else {
/* this is a normal file */
Alloc(cur_f, cf_t);
if (read_file(file_name, cur_f, is_system_startup) != 0) {
/* an error as occured */
return;
}
/* insert the file in the list */
cur_f->cf_next = file_base;
file_base = cur_f;
}
}
int
read_strn(int fd, char **str, short int size)
/* read a "size"-length string in a binary fcrontab file */
{
if ((*str = calloc(size + 1, sizeof(char))) == NULL)
goto err;
if (read(fd, *str, size) < size)
goto err;
(*str)[size] = '\0';
return OK;
err:
Free_safe(*str);
return ERR;
}
int
read_type(int fd, short int *type, short int *size)
/* read the type and size of the next field in a binary fcrontab file */
{
if (read(fd, type, sizeof(short int)) < sizeof(short int))
goto err;
if (read(fd, size, sizeof(short int)) < sizeof(short int))
goto err;
return OK;
err:
return ERR;
}
/* macros for read_file() */
/* read "size" bytes from file "ff", put them in "to", and check for errors */
#define Read(TO, SIZE, ERR_STR) \
{ \
if ( read(fileno(ff), &(TO), SIZE) < SIZE ) { \
error_e(ERR_STR); \
goto err; \
} \
}
#define Read_strn(TO, SIZE, ERR_STR) \
{ \
if ( read_strn(fileno(ff), &(TO), SIZE) != OK ) { \
error_e(ERR_STR); \
goto err; \
} \
}
int
read_file(const char *file_name, cf_t * cf, int is_system_startup)
/* read a formated fcrontab.
* return ERR on error, OK otherwise */
{
FILE *ff = NULL;
cl_t *cl = NULL;
long int bufi = 0;
time_t t_save = 0;
uid_t runas = 0;
char *runas_str = NULL;
struct stat file_stat;
struct passwd *pass = NULL;
short int type = 0, size = 0;
int rc;
int has_read_cl_first = 0; /* have we read S_FIRST_T? */
#ifdef WITH_SELINUX
int flask_enabled = is_selinux_enabled();
int retval;
struct av_decision avd;
char *user_name = NULL;
#endif
/* open file */
if ((ff = fopen(file_name, "r")) == NULL) {
warn_e("Could not read %s (may have just been removed)", file_name);
goto err;
}
/* check if this file is owned by root : otherwise, all runas fields
* of this file should be set to the owner */
rc = fstat(fileno(ff), &file_stat);
if (rc != 0) {
error_e("Could not stat %s", file_name);
goto err;
}
#ifdef WITH_SELINUX
if (flask_enabled && fgetfilecon(fileno(ff), &cf->cf_file_context) < 0) {
error_e("Could not get context of %s", file_name);
goto err;
}
#endif
if (strncmp(file_name, "new.", 4) == 0) {
if (file_stat.st_uid == rootuid) {
/* file is owned by root : no test needed : set runas to rootuid */
runas = rootuid;
}
else {
/* this is a standard user's new fcrontab : set the runas field to
* the owner of the file */
runas = file_stat.st_uid;
if ((pass = getpwuid(file_stat.st_uid)) == NULL) {
error_e("Could not getpwuid(%d)", file_stat.st_uid);
goto err;
}
runas_str = strdup2(pass->pw_name);
}
cf->cf_user = strdup2(file_name + 4);
}
else {
if (!cf->cf_user)
cf->cf_user = strdup2(file_name);
if (file_stat.st_uid == rootuid) {
/* file is owned by root : either this file has already been parsed
* at least once by fcron, or it is root's fcrontab */
runas = rootuid;
}
else {
error("Non-new file %s owned by someone else than root", file_name);
goto err;
}
}
#ifdef WITH_SELINUX
/*
* Since fcrontab files are not directly executed,
* fcron daemon must ensure that the fcrontab file has
* a context that is appropriate for the context of
* the user fcron job. It performs an entrypoint
* permission check for this purpose.
*/
if (flask_enabled) {
char *sename = NULL;
char *selevl = NULL;
/* first, get the SELinux user for that Linux user */
#ifdef SYSFCRONTAB
if (!strcmp(cf->cf_user, SYSFCRONTAB))
/* system_u is the default SELinux user for running system services */
user_name = "system_u";
else
#endif /* def SYSFCRONTAB */
{
if (getseuserbyname(cf->cf_user, &sename, &selevl) < 0) {
error_e("Cannot find SELinux user for user \"%s\"\n",
cf->cf_user);
goto err;
}
user_name = sename;
}
if (get_default_context(user_name, NULL, &cf->cf_user_context))
error_e("NO CONTEXT for Linux user '%s' (SELinux user '%s')",
cf->cf_user, user_name);
retval =
security_compute_av(cf->cf_user_context, cf->cf_file_context,
SECCLASS_FILE, FILE__ENTRYPOINT, &avd);
if (retval || ((FILE__ENTRYPOINT & avd.allowed) != FILE__ENTRYPOINT)) {
syslog(LOG_ERR, "ENTRYPOINT FAILED for Linux user '%s' "
"(CONTEXT %s) for file CONTEXT %s", cf->cf_user,
cf->cf_user_context, cf->cf_file_context);
goto err;
}
Free_safe(sename);
Free_safe(selevl);
}
#endif
debug("User %s Entry", file_name);
/* get version of fcrontab file: it permits to daemon not to load
* a file which he won't understand the syntax, for example
* a file using a depreciated format generated by an old fcrontab,
* if the syntax has changed */
if (read_type(fileno(ff), &type, &size) != OK || type != S_HEADER_T ||
read(fileno(ff), &bufi, size) < size || bufi != S_FILEVERSION) {
error("File %s is not valid: ignored.", file_name);
error("This file may have been generated by an old version of fcron.");
error("In that case, you should try to use the converter given in the "
"source package, or install it again using fcrontab.");
goto err;
}
if (read_type(fileno(ff), &type, &size) != OK || type != S_USER_T) {
error("Invalid binary fcrontab (no USER field)");
goto err;
}
/* get the owner's name */
/* we set cf->cf_user before for SE Linux, so we need to free it here */
Free_safe(cf->cf_user);
if (read_strn(fileno(ff), &cf->cf_user, size) != OK) {
error("Cannot read user's name : file ignored");
goto err;
}
if (runas != rootuid) {
/* we use file owner's name for more security (see above) */
/* free the value obtained by read_strn() (we need to read it anyway
* to set the file ptr to the next thing to read) */
Free_safe(cf->cf_user);
cf->cf_user = runas_str;
}
/* get the time & date of the saving */
/* a new file generated by fcrontab has t_save set to 0 */
if (read_type(fileno(ff), &type, &size) != OK || type != S_TIMEDATE_T
|| read(fileno(ff), &t_save, size) < size) {
error("could not get time and date of saving");
goto err;
}
else {
debug("file saved at %lu.", t_save);
}
if (cf->cf_env_list == NULL)
cf->cf_env_list = env_list_init();
Alloc(cl, cl_t);
/* main loop : read env variables, and lines */
while (read_type(fileno(ff), &type, &size) == OK) {
/* action is determined by the type of the field */
switch (type) {
case S_ENVVAR_T:
/* read a env variable and add it to the env var list */
{
char *envvar = NULL;
/* Read_strn go to "err" on error */
Read_strn(envvar, size, "Error while reading env var");
debug(" Env: \"%s\"", envvar);
/* we do not allow USER or LOGNAME assignment.
* this was already checked by fcrontab, but we check again
* just in case... */
if (strcmp_until(envvar, "USER", '=') == 0
|| strcmp_until(envvar, "LOGNAME", '=') == 0) {
error
("USER or LOGNAME assignement is not allowed: ignored.");
}
else {
env_list_putenv(cf->cf_env_list, envvar, 1);
}
Free_safe(envvar);
}
break;
case S_TZDIFF_T:
/* time diff between local (real) and system hour */
Read(bufi, size, "Error while reading tzdiff field");
cf->cf_tzdiff = (signed char)bufi;
break;
case S_TZ_T:
/* read the timezone (string) in which the line should run */
Read_strn(cl->cl_tz, size, "Error while reading timezone field");
break;
case S_SHELL_T:
Read_strn(cl->cl_shell, size, "Error while reading shell field");
break;
case S_RUNAS_T:
Read_strn(cl->cl_runas, size, "Error while reading runas field");
break;
case S_MAILTO_T:
Read_strn(cl->cl_mailto, size, "Error while reading mailto field");
break;
case S_NEXTEXE_T:
Read(bufi, size, "Error while reading nextexe field");
cl->cl_nextexe = (time_t) bufi;
break;
case S_FIRST_T:
Read(bufi, size, "Error while reading first field");
cl->cl_first = (time_t) bufi;
has_read_cl_first = 1;
break;
case S_OPTION_T:
if (size < OPTION_SIZE)
/* set the options not defined in the savefile to default */
set_default_opt(cl->cl_option);
Read(cl->cl_option, size, "Error while reading option field");
break;
case S_NUMEXE_T:
Read(cl->cl_numexe, size, "Error while reading numexe field");
break;
case S_LAVG_T:
Read(cl->cl_lavg, size, "Error while reading lavg field");
break;
case S_UNTIL_T:
Read(bufi, size, "Error while reading until field");
cl->cl_until = (time_t) bufi;
break;
case S_NICE_T:
Read(cl->cl_nice, size, "Error while reading nice field");
break;
case S_RUNFREQ_T:
Read(bufi, size, "Error while reading runfreq field");
cl->cl_runfreq = (unsigned short)bufi;
break;
case S_REMAIN_T:
Read(bufi, size, "Error while reading remain field");
cl->cl_remain = (unsigned short)bufi;
break;
case S_TIMEFREQ_T:
Read(bufi, size, "Error while reading timefreq field");
cl->cl_timefreq = (time_t) bufi;
break;
case S_JITTER_T:
/* read the jitter (uchar) to use to set next execution time */
Read(bufi, size, "Error while reading jitter field");
cl->cl_jitter = (unsigned char)bufi;
break;
case S_MINS_T:
Read(cl->cl_mins, size, "Error while reading mins field");
break;
case S_HRS_T:
Read(cl->cl_hrs, size, "Error while reading hrs field");
break;
case S_DAYS_T:
Read(cl->cl_days, size, "Error while reading days field");
break;
case S_MONS_T:
Read(cl->cl_mons, size, "Error while reading mons field");
break;
case S_DOW_T:
Read(cl->cl_dow, size, "Error while reading dow field");
break;
case S_ENDLINE_T:
if (is_freq(cl->cl_option) && !has_read_cl_first) {
/* Up to fcron 3.0.X, cl_first/S_FIRST_T was not saved for all @-lines */
cl->cl_first = cl->cl_nextexe;
}
if (add_line_to_file
(cl, cf, runas, runas_str, t_save, is_system_startup) != 0)
free_line(cl);
Alloc(cl, cl_t);
break;
/* default case in "switch(type)" */
default:
error("Error while loading %s : unknown field type %d (ignored)",
file_name, type);
free_line(cl);
Alloc(cl, cl_t);
/* skip the data corresponding to the unknown field */
{
/* we avoid using fseek(), as it seems not to work correctly
* on some systems when we use read() on the FILE stream */
int i;
for (i = 0; i < size; i++)
if (getc(ff) == EOF)
goto err;
}
}
}
/* free last cl Alloc : unused */
Free_safe(cl);
/* check for an error */
if (ferror(ff) != 0)
error("file %s is truncated : you should reinstall it with fcrontab",
file_name);
xfclose_check(&ff, file_name);
return OK;
err:
if (ff != NULL)
xfclose_check(&ff, file_name);
if (cl != NULL && cl->cl_next == NULL) {
/* line is not yet in the line list of the file : free it */
Free_safe(cl->cl_shell);
Free_safe(cl->cl_runas);
Free_safe(cl->cl_mailto);
Free_safe(cl);
}
/* check if we have started to read the lines and env var */
if (cl != NULL) {
/* insert the line in the file list in order to be able to free
* the memory using delete_file() */
cf->cf_next = file_base;
file_base = cf;
delete_file(cf->cf_user);
}
else {
Free_safe(cf->cf_user);
}
return ERR;
}
int
add_line_to_file(cl_t * cl, cf_t * cf, uid_t runas, char *runas_str,
time_t t_save, int is_system_startup)
/* check if the line is valid, and if yes, add it to the file cf */
{
time_t slept = now - t_save;
if (cl->cl_shell == NULL || cl->cl_runas == NULL || cl->cl_mailto == NULL) {
error("Line is not valid (empty shell, runas or mailto field)"
" : ignored");
return 1;
}
/* set runas field if necessary (to improve security) */
if (runas != rootuid) {
if (strcmp(cl->cl_runas, runas_str) != 0)
warn("warning: runas(%s) is not owner (%s): overridden.",
cl->cl_runas, runas_str);
Set(cl->cl_runas, runas_str);
}
/* we need that here because the user's name contained in the
* struct cf_t may be required */
cl->cl_file = cf;
/* check if the mailto field is valid */
if (cl->cl_mailto && (*(cl->cl_mailto) == '-' ||
strcspn(cl->cl_mailto,
" \t\n") != strlen(cl->cl_mailto))) {
error("mailto field \'%s\' is not valid : set to owner %s.",
cl->cl_mailto, cl->cl_file->cf_user);
Set(cl->cl_mailto, cl->cl_file->cf_user);
}
/* job has been stopped during execution: insert it in lavg or serial queue
* if it was in one at fcron's stops. */
/* NOTE: runatreboot is prioritary over jobs that were still running
* when fcron stops, because the former will get run quicker as they are not
* put into the serial queue. runatreboot jobs will be handled later on. */
if (cl->cl_numexe > 0 && !is_runatreboot(cl->cl_option)) {
cl->cl_numexe = 0;
if (is_lavg(cl->cl_option)) {
if (!is_strict(cl->cl_option))
add_lavg_job(cl, -1);
}
else if (is_serial(cl->cl_option)
|| is_serial_once(cl->cl_option))
add_serial_job(cl, -1);
else {
/* job has been stopped during execution :
* launch it again */
warn("job '%s' did not finish : running it again.", cl->cl_shell);
set_serial_once(cl->cl_option);
add_serial_job(cl, -1);
}
}
if (is_system_startup || is_volatile(cl->cl_option)) {
clear_hasrun(cl->cl_option);
}
if (is_runonce(cl->cl_option) && is_hasrun(cl->cl_option)) {
/* if we get here, then is_system_startup is_volatile are both false */
/* do nothing: don't re-schedule or add to the job queue */
explain("job '%s' with runonce set has already run since last "
"system startup: not re-scheduling.", cl->cl_shell);
}
else if (is_td(cl->cl_option)) {
/* set the time and date of the next execution */
if (is_system_startup && is_runatreboot(cl->cl_option)) {
if (is_notice_notrun(cl->cl_option)) {
if (cl->cl_runfreq == 1) {
/* %-line */
set_next_exe_notrun(cl, SYSDOWN_RUNATREBOOT);
}
else {
/* set next exe and mail user */
time_t since = cl->cl_nextexe;
cl->cl_nextexe = now;
mail_notrun_time_t(cl, SYSDOWN, since);
}
}
else {
cl->cl_nextexe = now;
}
insert_nextexe(cl);
}
else if (cl->cl_nextexe <= now) {
if (cl->cl_nextexe == 0)
/* the is a line from a new file */
set_next_exe(cl, NO_GOTO, -1);
else if (cl->cl_runfreq == 1 && is_notice_notrun(cl->cl_option))
set_next_exe_notrun(cl, SYSDOWN);
else if (is_bootrun(cl->cl_option) && t_save != 0
&& cl->cl_runfreq != 1) {
if (cl->cl_remain > 0 && --cl->cl_remain > 0) {
debug(" cl_remain: %d", cl->cl_remain);
}
else {
/* run bootrun jobs */
cl->cl_remain = cl->cl_runfreq;
debug(" boot-run '%s'", cl->cl_shell);
if (!is_lavg(cl->cl_option)) {
set_serial_once(cl->cl_option);
add_serial_job(cl, -1);
}
else
add_lavg_job(cl, -1);
}
set_next_exe(cl, STD, -1);
}
else {
if (is_notice_notrun(cl->cl_option)) {
/* set next exe and mail user */
time_t since = cl->cl_nextexe;
set_next_exe(cl, NO_GOTO, -1);
mail_notrun_time_t(cl, SYSDOWN, since);
}
else
set_next_exe(cl, NO_GOTO, -1);
}
}
else {
/* value of nextexe is valid : just insert line in queue */
insert_nextexe(cl);
}
}
else { /* is_td(cl->cl_option) */
if (cl->cl_timefreq < 10) {
error("Invalid timefreq %ld for job '%s': setting to 1 day",
cl->cl_timefreq, cl->cl_shell);
cl->cl_timefreq = 3600 * 24;
}
/* standard @-lines */
if (is_system_startup && is_runatreboot(cl->cl_option)) {
cl->cl_nextexe = now;
}
/* t_save == 0 means this is a new file, hence a new line */
else if (t_save == 0 || is_volatile(cl->cl_option)
|| (is_system_startup && (is_rebootreset(cl->cl_option)
|| is_runonce(cl->cl_option)))) {
/* cl_first is always saved to disk for a volatile line */
if (cl->cl_first == LONG_MAX) {
cl->cl_nextexe = TIME_T_MAX;
}
else {
cl->cl_nextexe = now + cl->cl_first;
if (cl->cl_nextexe < now || cl->cl_nextexe > TIME_T_MAX) {
/* there was an integer overflow! */
error
("Error while setting next exe time for job '%s': cl_nextexe"
" overflowed (case1). now=%lu, cl_timefreq=%lu, cl_nextexe=%lu.",
cl->cl_shell, now, cl->cl_timefreq, cl->cl_nextexe);
error
("Setting cl_nextexe to TIME_T_MAX to prevent an infinite loop.");
cl->cl_nextexe = TIME_T_MAX;
}
}
}
else {
if (cl->cl_nextexe != LONG_MAX) {
cl->cl_nextexe += slept;
if (cl->cl_nextexe < now || cl->cl_nextexe > TIME_T_MAX) {
/* either there was an integer overflow, or the slept time is incorrect
* (e.g. fcron didn't shut down cleanly and the fcrontab wasn't saved correctly) */
error
("Error while setting next exe time for job '%s': cl_nextexe"
" overflowed (case2). now=%lu, cl_timefreq=%lu, cl_nextexe=%lu. "
"Did fcron shut down cleanly?",
cl->cl_shell, now, cl->cl_timefreq, cl->cl_nextexe);
error
("Setting cl_nextexe to now+cl_timefreq to prevent an infinite loop.");
cl->cl_nextexe = now + cl->cl_timefreq;
error("next execution will now be at %ld.", cl->cl_nextexe);
}
}
}
insert_nextexe(cl);
}
if (debug_opt && !(is_runonce(cl->cl_option) && is_hasrun(cl->cl_option))) {
struct tm *ftime;
ftime = localtime(&(cl->cl_nextexe));
debug(" cmd '%s' next exec %04d-%02d-%02d wday:%d %02d:%02d:%02d"
" (system time)",
cl->cl_shell, (ftime->tm_year + 1900), (ftime->tm_mon + 1),
ftime->tm_mday, ftime->tm_wday, ftime->tm_hour, ftime->tm_min,
ftime->tm_sec);
}
/* add the current line to the list, and allocate a new line */
if ((cl->cl_id = next_id++) >= ULONG_MAX - 1) {
warn("Line id reached %ld: cycling back to zero.", ULONG_MAX);
next_id = 0;
}
cl->cl_next = cf->cf_line_base;
cf->cf_line_base = cl;
return 0;
}
void
delete_file(const char *user_name)
/* free a file if user_name is not null
* otherwise free all files */
{
cf_t *file;
cf_t *prev_file = NULL;
cl_t *line;
cl_t *cur_line;
struct job_t *j = NULL;
struct job_t *prev_j;
int i, k;
struct cl_t **s_a = NULL;
exe_t *e = NULL;
lavg_t *l = NULL;
file = file_base;
while (file != NULL) {
if (strcmp(user_name, file->cf_user) != 0) {
prev_file = file;
file = file->cf_next;
continue;
}
for (e = exe_list_first(exe_list); e != NULL;
e = exe_list_next(exe_list))
if (e->e_line != NULL && e->e_line->cl_file == file) {
/* we set the e_line to NULL, as so we know in wait_chld()
* and wait_all() the corresponding file has been removed.
* Plus, we decrement serial_running and lavg_serial_running
* as we won't be able to do it at the end of the job */
if ((is_serial(e->e_line->cl_option) ||
is_serial_once(e->e_line->cl_option)) &&
!is_lavg(e->e_line->cl_option))
serial_running--;
else if (is_serial(e->e_line->cl_option) &&
is_lavg(e->e_line->cl_option))
lavg_serial_running--;
e->e_line = NULL;
}
/* free lavg queue entries */
for (l = lavg_list_first(lavg_list); l != NULL;
l = lavg_list_next(lavg_list))
if (l->l_line->cl_file == file) {
debug("removing '%s' from lavg queue", l->l_line->cl_shell);
lavg_list_remove_cur(lavg_list);
}
/* free serial queue entries */
for (i = 0; i < serial_array_size; i++)
if (serial_array[i] != NULL && serial_array[i]->cl_file == file) {
if (!s_a) {
s_a =
alloc_safe(serial_array_size * sizeof(cl_t *),
"serial queue");
}
debug("removing '%s' from serial queue",
serial_array[i]->cl_shell);
serial_num--;
serial_array[i]->cl_numexe--;
serial_array[i] = NULL;
}
/* remove from queue and move the rest of the jobs to get
* a queue in order without empty entries */
if (!s_a)
goto end_of_serial_recomputing;
if ((k = serial_array_index + serial_num) >= serial_array_size)
k -= serial_array_size;
for (i = k = 0; i < serial_array_size; i++) {
if (serial_array_index + i < serial_array_size) {
if ((s_a[k] = serial_array[serial_array_index + i]) != NULL)
k++;
}
else if ((s_a[k] =
serial_array[serial_array_index + i - serial_array_size])
!= NULL)
k++;
}
Free_safe(serial_array);
serial_array = s_a;
serial_array_index = 0;
end_of_serial_recomputing:
/* free lines */
cur_line = file->cf_line_base;
while ((line = cur_line) != NULL) {
cur_line = line->cl_next;
/* remove from the main queue */
prev_j = NULL;
for (j = queue_base; j != NULL; j = j->j_next)
if (j->j_line == line) {
if (prev_j != NULL)
prev_j->j_next = j->j_next;
else
queue_base = j->j_next;
Free_safe(j);
break;
}
else
prev_j = j;
/* free line itself */
free_line(line);
}
/* delete_file() MUST remove only the first occurrence :
* this is needed by synchronize_file() */
break;
}
if (file == NULL)
/* file not in the file list */
return;
/* remove file from file list */
if (prev_file == NULL)
file_base = file->cf_next;
else
prev_file->cf_next = file->cf_next;
/* free env variables */
env_list_destroy(file->cf_env_list);
/* finally free file itself */
Free_safe(file->cf_user);
Free_safe(file);
}
void
save_file(cf_t * arg_file)
/* Store the informations relatives to the executions
* of tasks at a defined frequency of system's running time */
{
cf_t *file = NULL;
cf_t *start_file = NULL;
if (arg_file != NULL)
start_file = arg_file;
else
start_file = file_base;
for (file = start_file; file; file = file->cf_next) {
debug("Saving %s...", file->cf_user);
/* save the file safely : save it to a temporary name, then rename() it */
/* chown the file to root:root : this file should only be read and
* modified by fcron (not fcrontab) */
save_file_safe(file, file->cf_user, "fcron", rootuid, rootgid, now);
if (arg_file != NULL)
/* we have to save only a single file */
break;
}
}