commit a1c04e932bdaf411c500622f706fa7d5dfcc28fb
parent b553349251e3904601f4c535e2f5b0911450da88
Author: sin <sin@2f30.org>
Date: Fri, 6 Nov 2015 10:58:27 +0000
Sync cron with latest scron
Diffstat:
| M | cron.c | | | 279 | ++++++++++++++++++++++++++++++++++++++++++++++++++----------------------------- |
1 file changed, 177 insertions(+), 102 deletions(-)
diff --git a/cron.c b/cron.c
@@ -1,11 +1,14 @@
/* See LICENSE file for copyright and license details. */
+#include <sys/types.h>
#include <sys/wait.h>
#include <errno.h>
+#include <limits.h>
#include <signal.h>
#include <stdarg.h>
#include <stdlib.h>
#include <stdio.h>
+#include <ctype.h>
#include <string.h>
#include <syslog.h>
#include <time.h>
@@ -15,11 +18,16 @@
#include "util.h"
struct field {
- /* [low, high] */
- long low;
- long high;
- /* for every `div' units */
- long div;
+ enum {
+ ERROR,
+ WILDCARD,
+ NUMBER,
+ RANGE,
+ REPEAT,
+ LIST
+ } type;
+ long *val;
+ int len;
};
struct ctabentry {
@@ -112,7 +120,7 @@ runjob(char *cmd)
loginfo("run: %s pid: %d at %s",
cmd, getpid(), ctime(&t));
execl("/bin/sh", "/bin/sh", "-c", cmd, (char *)NULL);
- logwarn("error: failed to execute job: %s time: %s",
+ logerr("error: failed to execute job: %s time: %s",
cmd, ctime(&t));
_exit(1);
default:
@@ -194,25 +202,39 @@ matchentry(struct ctabentry *cte, struct tm *tm)
{ .f = &cte->wday, .tm = tm->tm_wday, .len = 7 },
};
size_t i;
+ int j;
for (i = 0; i < LEN(matchtbl); i++) {
- if (matchtbl[i].f->high == -1) {
- if (matchtbl[i].f->low == -1) {
- continue;
- } else if (matchtbl[i].f->div > 0) {
- if (matchtbl[i].tm > 0) {
- if (matchtbl[i].tm % matchtbl[i].f->div == 0)
- continue;
- } else {
- if (matchtbl[i].len % matchtbl[i].f->div == 0)
- continue;
- }
- } else if (matchtbl[i].f->low == matchtbl[i].tm) {
+ switch (matchtbl[i].f->type) {
+ case WILDCARD:
+ continue;
+ case NUMBER:
+ if (matchtbl[i].f->val[0] == matchtbl[i].tm)
continue;
+ break;
+ case RANGE:
+ if (matchtbl[i].f->val[0] <= matchtbl[i].tm)
+ if (matchtbl[i].f->val[1] >= matchtbl[i].tm)
+ continue;
+ break;
+ case REPEAT:
+ if (matchtbl[i].tm > 0) {
+ if (matchtbl[i].tm % matchtbl[i].f->val[0] == 0)
+ continue;
+ } else {
+ if (matchtbl[i].len % matchtbl[i].f->val[0] == 0)
+ continue;
}
- } else if (matchtbl[i].f->low <= matchtbl[i].tm &&
- matchtbl[i].f->high >= matchtbl[i].tm) {
- continue;
+ break;
+ case LIST:
+ for (j = 0; j < matchtbl[i].f->len; j++)
+ if (matchtbl[i].f->val[j] == matchtbl[i].tm)
+ break;
+ if (j < matchtbl[i].f->len)
+ continue;
+ break;
+ default:
+ break;
}
break;
}
@@ -224,59 +246,120 @@ matchentry(struct ctabentry *cte, struct tm *tm)
static int
parsefield(const char *field, long low, long high, struct field *f)
{
- long min, max, div;
+ int i;
char *e1, *e2;
+ const char *p;
- if (strcmp(field, "*") == 0) {
- f->low = -1;
- f->high = -1;
- return 0;
- }
+ p = field;
+ while (isdigit(*p))
+ p++;
- div = -1;
- max = -1;
- min = strtol(field, &e1, 10);
+ f->type = ERROR;
+
+ switch (*p) {
+ case '*':
+ if (strcmp(field, "*") == 0) {
+ f->val = NULL;
+ f->len = 0;
+ f->type = WILDCARD;
+ } else if (strncmp(field, "*/", 2) == 0) {
+ f->val = emalloc(sizeof(*f->val));
+ f->len = 1;
+
+ errno = 0;
+ f->val[0] = strtol(field + 2, &e1, 10);
+ if (e1[0] != '\0' || errno != 0 || f->val[0] == 0)
+ break;
+
+ f->type = REPEAT;
+ }
+ break;
+ case '\0':
+ f->val = emalloc(sizeof(*f->val));
+ f->len = 1;
- switch (e1[0]) {
- case '-':
- e1++;
errno = 0;
- max = strtol(e1, &e2, 10);
- if (e2[0] != '\0' || errno != 0)
- return -1;
+ f->val[0] = strtol(field, &e1, 10);
+ if (e1[0] != '\0' || errno != 0)
+ break;
+
+ f->type = NUMBER;
break;
- case '*':
- e1++;
- if (e1[0] != '/')
- return -1;
- e1++;
+ case '-':
+ f->val = emalloc(2 * sizeof(*f->val));
+ f->len = 2;
+
+ errno = 0;
+ f->val[0] = strtol(field, &e1, 10);
+ if (e1[0] != '-' || errno != 0)
+ break;
+
errno = 0;
- div = strtol(e1, &e2, 10);
+ f->val[1] = strtol(e1 + 1, &e2, 10);
if (e2[0] != '\0' || errno != 0)
- return -1;
+ break;
+
+ f->type = RANGE;
break;
- case '\0':
+ case ',':
+ for (i = 1; isdigit(*p) || *p == ','; p++)
+ if (*p == ',')
+ i++;
+ f->val = emalloc(i * sizeof(*f->val));
+ f->len = i;
+
+ errno = 0;
+ f->val[0] = strtol(field, &e1, 10);
+ if (f->val[0] < low || f->val[0] > high)
+ break;
+
+ for (i = 1; *e1 == ',' && errno == 0; i++) {
+ errno = 0;
+ f->val[i] = strtol(e1 + 1, &e2, 10);
+ e1 = e2;
+ }
+ if (e1[0] != '\0' || errno != 0)
+ break;
+
+ f->type = LIST;
break;
default:
return -1;
}
- if (min < low || min > high)
+ for (i = 0; i < f->len; i++)
+ if (f->val[i] < low || f->val[i] > high)
+ f->type = ERROR;
+
+ if (f->type == ERROR) {
+ free(f->val);
return -1;
- if (max != -1)
- if (max < low || max > high)
- return -1;
- if (div != -1)
- if (div < low || div > high)
- return -1;
-
- f->low = min;
- f->high = max;
- f->div = div;
+ }
+
return 0;
}
static void
+freecte(struct ctabentry *cte, int nfields)
+{
+ switch (nfields) {
+ case 6:
+ free(cte->cmd);
+ case 5:
+ free(cte->wday.val);
+ case 4:
+ free(cte->mon.val);
+ case 3:
+ free(cte->mday.val);
+ case 2:
+ free(cte->hour.val);
+ case 1:
+ free(cte->min.val);
+ }
+ free(cte);
+}
+
+static void
unloadentries(void)
{
struct ctabentry *cte, *tmp;
@@ -284,8 +367,7 @@ unloadentries(void)
for (cte = TAILQ_FIRST(&ctabhead); cte; cte = tmp) {
tmp = TAILQ_NEXT(cte, entry);
TAILQ_REMOVE(&ctabhead, cte, entry);
- free(cte->cmd);
- free(cte);
+ freecte(cte, 6);
}
}
@@ -298,69 +380,62 @@ loadentries(void)
int r = 0, y;
size_t size = 0;
ssize_t len;
+ struct fieldlimits {
+ char *name;
+ long min;
+ long max;
+ struct field *f;
+ } flim[] = {
+ { "min", 0, 59, NULL },
+ { "hour", 0, 23, NULL },
+ { "mday", 1, 31, NULL },
+ { "mon", 1, 12, NULL },
+ { "wday", 0, 6, NULL }
+ };
+ size_t x;
if ((fp = fopen(config, "r")) == NULL) {
logerr("error: can't open %s: %s\n", config, strerror(errno));
return -1;
}
- for (y = 0; (len = getline(&line, &size, fp)) > 0; y++) {
+ for (y = 0; (len = getline(&line, &size, fp)) != -1; y++) {
p = line;
if (line[0] == '#' || line[0] == '\n' || line[0] == '\0')
continue;
cte = emalloc(sizeof(*cte));
-
- col = strsep(&p, "\t");
- if (!col || parsefield(col, 0, 59, &cte->min) < 0) {
- logerr("error: failed to parse `min' field on line %d\n",
- y + 1);
- free(cte);
- r = -1;
- break;
- }
-
- col = strsep(&p, "\t");
- if (!col || parsefield(col, 0, 23, &cte->hour) < 0) {
- logerr("error: failed to parse `hour' field on line %d\n",
- y + 1);
- free(cte);
- r = -1;
- break;
- }
-
- col = strsep(&p, "\t");
- if (!col || parsefield(col, 1, 31, &cte->mday) < 0) {
- logerr("error: failed to parse `mday' field on line %d\n",
- y + 1);
- free(cte);
- r = -1;
- break;
- }
-
- col = strsep(&p, "\t");
- if (!col || parsefield(col, 1, 12, &cte->mon) < 0) {
- logerr("error: failed to parse `mon' field on line %d\n",
- y + 1);
- free(cte);
- r = -1;
- break;
+ flim[0].f = &cte->min;
+ flim[1].f = &cte->hour;
+ flim[2].f = &cte->mday;
+ flim[3].f = &cte->mon;
+ flim[4].f = &cte->wday;
+
+ for (x = 0; x < LEN(flim); x++) {
+ do
+ col = strsep(&p, "\t\n ");
+ while (col && col[0] == '\0');
+
+ if (!col || parsefield(col, flim[x].min, flim[x].max, flim[x].f) < 0) {
+ logerr("error: failed to parse `%s' field on line %d\n",
+ flim[x].name, y + 1);
+ freecte(cte, x);
+ r = -1;
+ break;
+ }
}
- col = strsep(&p, "\t");
- if (!col || parsefield(col, 0, 6, &cte->wday) < 0) {
- logerr("error: failed to parse `wday' field on line %d\n",
- y + 1);
- free(cte);
- r = -1;
+ if (r == -1)
break;
- }
col = strsep(&p, "\n");
- if (!col) {
+ if (col)
+ while (col[0] == '\t' || col[0] == ' ')
+ col++;
+ if (!col || col[0] == '\0') {
logerr("error: missing `cmd' field on line %d\n",
y + 1);
- free(cte);
+ freecte(cte, 5);
r = -1;
break;
}
