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-rw-r--r--crond/rdcron.c503
1 files changed, 0 insertions, 503 deletions
diff --git a/crond/rdcron.c b/crond/rdcron.c
deleted file mode 100644
index 8781a6f..0000000
--- a/crond/rdcron.c
+++ /dev/null
@@ -1,503 +0,0 @@
-/* SPDX-License-Identifier: GPL-3.0-or-later */
-/*
- * Copyright (C) 2018 - David Oberhollenzer
- *
- * 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 3 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, see <https://www.gnu.org/licenses/>.
- */
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <string.h>
-#include <stdlib.h>
-#include <limits.h>
-#include <stdio.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <ctype.h>
-#include <pwd.h>
-#include <grp.h>
-
-#include "crontab.h"
-#include "libcfg.h"
-#include "util.h"
-
-
-static const enum_map_t weekday[] = {
- { "MON", 1 },
- { "TUE", 2 },
- { "WED", 3 },
- { "THU", 4 },
- { "FRI", 5 },
- { "SAT", 6 },
- { "SUN", 0 },
-};
-
-static const enum_map_t month[] = {
- { "JAN", 1 },
- { "FEB", 2 },
- { "MAR", 3 },
- { "APR", 4 },
- { "MAY", 5 },
- { "JUN", 6 },
- { "JUL", 7 },
- { "AUG", 8 },
- { "SEP", 9 },
- { "OCT", 10 },
- { "NOV", 11 },
- { "DEC", 12 },
-};
-
-static const struct {
- const char *macro;
- crontab_t tab;
-} intervals[] = {
- {
- .macro = "yearly",
- .tab = {
- .minute = 0x01,
- .hour = 0x01,
- .dayofmonth = 0x01,
- .month = 0x01,
- .dayofweek = 0xFF
- },
- }, {
- .macro = "annually",
- .tab = {
- .minute = 0x01,
- .hour = 0x01,
- .dayofmonth = 0x01,
- .month = 0x01,
- .dayofweek = 0xFF
- },
- }, {
- .macro = "monthly",
- .tab = {
- .minute = 0x01,
- .hour = 0x01,
- .dayofmonth = 0x01,
- .month = 0xFFFF,
- .dayofweek = 0xFF
- },
- }, {
- .macro = "weekly",
- .tab = {
- .minute = 0x01,
- .hour = 0x01,
- .dayofmonth = 0xFFFFFFFF,
- .month = 0xFFFF,
- .dayofweek = 0x01
- },
- }, {
- .macro = "daily",
- .tab = {
- .minute = 0x01,
- .hour = 0x01,
- .dayofmonth = 0xFFFFFFFF,
- .month = 0xFFFF,
- .dayofweek = 0xFF
- },
- }, {
- .macro = "hourly",
- .tab = {
- .minute = 0x01,
- .hour = 0xFFFFFFFF,
- .dayofmonth = 0xFFFFFFFF,
- .month = 0xFFFF,
- .dayofweek = 0xFF
- },
- },
-};
-
-/*****************************************************************************/
-
-static int try_unescape(char *arg, rdline_t *rd)
-{
- if (unescape(arg)) {
- fprintf(stderr, "%s: %zu: malformed string constant\n",
- rd->filename, rd->lineno);
- return -1;
- }
- return 0;
-}
-
-static char *try_strdup(const char *str, rdline_t *rd)
-{
- char *out = strdup(str);
-
- if (out == NULL) {
- fprintf(stderr, "%s: %zu: out of memory\n",
- rd->filename, rd->lineno);
- }
- return out;
-}
-
-static char *readnum(char *line, int *out, int minval, int maxval,
- const enum_map_t *mnemonic, rdline_t *rd)
-{
- int i, temp, value = 0;
- const enum_map_t *ev;
-
- if (!isdigit(*line)) {
- if (!mnemonic)
- goto fail_mn;
-
- for (i = 0; isalnum(line[i]); ++i)
- ;
- if (i == 0)
- goto fail_mn;
-
- temp = line[i];
- line[i] = '\0';
- ev = enum_by_name(mnemonic, line);
- if (!ev) {
- fprintf(stderr, "%s: %zu: unexpected '%s'",
- rd->filename, rd->lineno, line);
- }
- line[i] = temp;
- if (!ev)
- return NULL;
- *out = ev->value;
- return line + i;
- }
-
- while (isdigit(*line)) {
- i = ((*(line++)) - '0');
- if (value > (maxval - i) / 10)
- goto fail_of;
- value = value * 10 + i;
- }
-
- if (value < minval)
- goto fail_uf;
-
- *out = value;
- return line;
-fail_of:
- fprintf(stderr, "%s: %zu: value exceeds maximum (%d > %d)\n",
- rd->filename, rd->lineno, value, maxval);
- return NULL;
-fail_uf:
- fprintf(stderr, "%s: %zu: value too small (%d < %d)\n",
- rd->filename, rd->lineno, value, minval);
- return NULL;
-fail_mn:
- fprintf(stderr, "%s: %zu: expected numeric value",
- rd->filename, rd->lineno);
- return NULL;
-}
-
-static char *readfield(char *line, uint64_t *out, int minval, int maxval,
- const enum_map_t *mnemonic, rdline_t *rd)
-{
- int value, endvalue, step;
- uint64_t v = 0;
-next:
- if (*line == '*') {
- ++line;
- value = minval;
- endvalue = maxval;
- } else {
- line = readnum(line, &value, minval, maxval, mnemonic, rd);
- if (!line)
- goto fail;
-
- if (*line == '-') {
- line = readnum(line + 1, &endvalue, minval, maxval,
- mnemonic, rd);
- if (!line)
- goto fail;
- } else {
- endvalue = value;
- }
- }
-
- if (endvalue < value)
- goto fail;
-
- if (*line == '/') {
- line = readnum(line + 1, &step, 1, maxval + 1, NULL, rd);
- if (!line)
- goto fail;
- } else {
- step = 1;
- }
-
- while (value <= endvalue) {
- v |= 1UL << (unsigned long)(value - minval);
- value += step;
- }
-
- if (*line == ',' || *line == ' ') {
- ++line;
- goto next;
- }
-
- if (*line != '\0')
- goto fail;
-
- *out = v;
- return line;
-fail:
- fprintf(stderr, "%s: %zu: invalid time range expression\n",
- rd->filename, rd->lineno);
- return NULL;
-}
-
-/*****************************************************************************/
-
-static int cron_exec(void *user, char *arg, rdline_t *rd, int flags)
-{
- crontab_t *cron = user;
- exec_t *e, *end;
- (void)flags;
-
- e = calloc(1, sizeof(*e) + strlen(arg) + 1);
- if (e == NULL) {
- fprintf(stderr, "%s: %zu: out of memory\n",
- rd->filename, rd->lineno);
- return -1;
- }
-
- strcpy(e->args, arg);
-
- e->argc = pack_argv(e->args);
- if (e->argc < 0) {
- fprintf(stderr, "%s: %zu: malformed string constant\n",
- rd->filename, rd->lineno);
- return -1;
- }
-
- if (cron->exec == NULL) {
- cron->exec = e;
- } else {
- for (end = cron->exec; end->next != NULL; end = end->next)
- ;
- end->next = e;
- }
- return 0;
-}
-
-static int cron_hour(void *user, char *arg, rdline_t *rd, int flags)
-{
- crontab_t *cron = user;
- uint64_t value;
- (void)flags;
-
- if (!readfield(arg, &value, 0, 23, NULL, rd))
- return -1;
-
- cron->hour = value;
- return 0;
-}
-
-static int cron_minute(void *user, char *arg, rdline_t *rd, int flags)
-{
- crontab_t *cron = user;
- uint64_t value;
- (void)flags;
-
- if (!readfield(arg, &value, 0, 59, NULL, rd))
- return -1;
-
- cron->minute = value;
- return 0;
-}
-
-static int cron_dayofmonth(void *user, char *arg, rdline_t *rd, int flags)
-{
- crontab_t *cron = user;
- uint64_t value;
- (void)flags;
-
- if (!readfield(arg, &value, 1, 31, NULL, rd))
- return -1;
-
- cron->dayofmonth = value;
- return 0;
-}
-
-static int cron_dayofweek(void *user, char *arg, rdline_t *rd, int flags)
-{
- crontab_t *cron = user;
- uint64_t value;
- (void)flags;
-
- if (!readfield(arg, &value, 0, 6, weekday, rd))
- return -1;
-
- cron->dayofweek = value;
- return 0;
-}
-
-static int cron_month(void *user, char *arg, rdline_t *rd, int flags)
-{
- crontab_t *cron = user;
- uint64_t value;
- (void)flags;
-
- if (!readfield(arg, &value, 1, 12, month, rd))
- return -1;
-
- cron->month = value;
- return 0;
-}
-
-static int cron_interval(void *user, char *arg, rdline_t *rd, int flags)
-{
- crontab_t *cron = user;
- size_t i;
- (void)flags;
-
- for (i = 0; i < ARRAY_SIZE(intervals); ++i) {
- if (!strcmp(intervals[i].macro, arg)) {
- cron->minute = intervals[i].tab.minute;
- cron->hour = intervals[i].tab.hour;
- cron->dayofmonth = intervals[i].tab.dayofmonth;
- cron->month = intervals[i].tab.month;
- cron->dayofweek = intervals[i].tab.dayofweek;
- return 0;
- }
- }
-
- fprintf(stderr, "%s: %zu: unknown interval '%s'\n",
- rd->filename, rd->lineno, arg);
- return -1;
-}
-
-static int cron_user(void *user, char *arg, rdline_t *rd, int flags)
-{
- crontab_t *cron = user;
- struct passwd *pwd;
- bool isnumeric;
- char *ptr;
- int value;
- (void)flags;
-
- for (ptr = arg; isdigit(*ptr); ++ptr)
- ;
-
- isnumeric = (*ptr == '\0');
- pwd = getpwnam(arg);
-
- if (pwd == NULL && !isnumeric) {
- fprintf(stderr, "%s: %zu: unknown user '%s'\n",
- rd->filename, rd->lineno, arg);
- return -1;
- }
-
- if (pwd != NULL) {
- cron->uid = pwd->pw_uid;
- } else {
- if (readnum(arg, &value, 0, INT_MAX, NULL, rd))
- return -1;
- cron->uid = value;
- }
- return 0;
-}
-
-static int cron_group(void *user, char *arg, rdline_t *rd, int flags)
-{
- crontab_t *cron = user;
- struct group *group;
- bool isnumeric;
- char *ptr;
- int value;
- (void)flags;
-
- for (ptr = arg; isdigit(*ptr); ++ptr)
- ;
-
- isnumeric = (*ptr == '\0');
- group = getgrnam(arg);
-
- if (group == NULL && !isnumeric) {
- fprintf(stderr, "%s: %zu: unknown group '%s'\n",
- rd->filename, rd->lineno, arg);
- return -1;
- }
-
- if (group != NULL) {
- cron->gid = group->gr_gid;
- } else {
- if (readnum(arg, &value, 0, INT_MAX, NULL, rd))
- return -1;
- cron->gid = value;
- }
- return 0;
-}
-
-static int cron_tty(void *user, char *arg, rdline_t *rd, int flags)
-{
- crontab_t *cron = user;
- (void)flags;
-
- if (strncmp(arg, "truncate", 8) == 0 && isspace(arg[8])) {
- cron->tty_truncate = 1;
- arg += 8;
- while (isspace(*arg))
- ++arg;
- }
-
- if (try_unescape(arg, rd))
- return -1;
-
- cron->ctty = try_strdup(arg, rd);
- return cron->ctty == NULL ? -1 : 0;
-}
-
-
-
-static const cfg_param_t cron_params[] = {
- { "hour", 0, cron_hour },
- { "minute", 0, cron_minute },
- { "dayofmonth", 0, cron_dayofmonth },
- { "dayofweek", 0, cron_dayofweek },
- { "month", 0, cron_month },
- { "interval", 0, cron_interval },
- { "user", 0, cron_user },
- { "group", 0, cron_group },
- { "tty", 0, cron_tty },
- { "exec", 1, cron_exec },
-};
-
-crontab_t *rdcron(int dirfd, const char *filename)
-{
- crontab_t *cron = NULL;
- rdline_t rd;
- int ret;
-
- if (rdline_init(&rd, dirfd, filename, 0, NULL))
- return NULL;
-
- cron = calloc(1, sizeof(*cron));
- if (cron == NULL) {
- fputs("out of memory\n", stderr);
- goto out;
- }
-
- cron->minute = 0xFFFFFFFFFFFFFFFFUL;
- cron->hour = 0xFFFFFFFF;
- cron->dayofmonth = 0xFFFFFFFF;
- cron->month = 0xFFFF;
- cron->dayofweek = 0xFF;
-
- ret = rdcfg(cron, &rd, cron_params, ARRAY_SIZE(cron_params), 0);
- if (ret) {
- delcron(cron);
- cron = NULL;
- }
-out:
- rdline_cleanup(&rd);
- return cron;
-}
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