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-rw-r--r--lib/Makemodule.am11
-rw-r--r--lib/cron/cronscan.c77
-rw-r--r--lib/cron/crontab.c50
-rw-r--r--lib/cron/delcron.c38
-rw-r--r--lib/cron/rdcron.c503
-rw-r--r--lib/include/crontab.h56
-rw-r--r--lib/include/libcfg.h24
-rw-r--r--lib/libcfg/rdcfg.c83
-rw-r--r--lib/util/rdsvc.c128
9 files changed, 882 insertions, 88 deletions
diff --git a/lib/Makemodule.am b/lib/Makemodule.am
index 817a2a5..7620e63 100644
--- a/lib/Makemodule.am
+++ b/lib/Makemodule.am
@@ -9,11 +9,16 @@ libinit_a_CPPFLAGS = $(AM_CPPFLAGS)
libinit_a_CFLAGS = $(AM_CFLAGS)
libcfg_a_SOURCES = lib/libcfg/rdline.c lib/libcfg/unescape.c
-libcfg_a_SOURCES += lib/libcfg/splitkv.c
+libcfg_a_SOURCES += lib/libcfg/splitkv.c lib/libcfg/rdcfg.c
libcfg_a_SOURCES += lib/libcfg/pack_argv.c lib/include/libcfg.h
libcfg_a_CPPFLAGS = $(AM_CPPFLAGS)
libcfg_a_CFLAGS = $(AM_CFLAGS)
-EXTRA_DIST += $(HEADRS) lib/include/libcfg.h
+libcron_a_SOURCES = lib/cron/rdcron.c lib/cron/delcron.c lib/cron/crontab.c
+libcron_a_SOURCES += lib/cron/cronscan.c lib/include/crontab.h
+libcron_a_CPPFLAGS = $(AM_CPPFLAGS)
+libcron_a_CFLAGS = $(AM_CFLAGS)
-noinst_LIBRARIES += libinit.a libcfg.a
+EXTRA_DIST += $(HEADRS) lib/include/libcfg.h lib/include/crontab.h
+
+noinst_LIBRARIES += libinit.a libcfg.a libcron.a
diff --git a/lib/cron/cronscan.c b/lib/cron/cronscan.c
new file mode 100644
index 0000000..e28fb03
--- /dev/null
+++ b/lib/cron/cronscan.c
@@ -0,0 +1,77 @@
+/* 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 <stddef.h>
+#include <dirent.h>
+#include <string.h>
+#include <errno.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <ctype.h>
+
+#include "crontab.h"
+
+int cronscan(const char *directory, crontab_t **list)
+{
+ struct dirent *ent;
+ int dfd, ret = 0;
+ crontab_t *cron;
+ DIR *dir;
+
+ dir = opendir(directory);
+ if (dir == NULL) {
+ perror(directory);
+ return -1;
+ }
+
+ dfd = dirfd(dir);
+ if (dfd < 0) {
+ perror(directory);
+ closedir(dir);
+ return -1;
+ }
+
+ for (;;) {
+ errno = 0;
+ ent = readdir(dir);
+
+ if (ent == NULL) {
+ if (errno != 0) {
+ perror(directory);
+ ret = -1;
+ }
+ break;
+ }
+
+ if (!strcmp(ent->d_name, ".") || !strcmp(ent->d_name, ".."))
+ continue;
+
+ cron = rdcron(dfd, ent->d_name);
+ if (cron == NULL) {
+ ret = -1;
+ continue;
+ }
+
+ cron->next = *list;
+ *list = cron;
+ }
+
+ closedir(dir);
+ return ret;
+}
diff --git a/lib/cron/crontab.c b/lib/cron/crontab.c
new file mode 100644
index 0000000..f761ec0
--- /dev/null
+++ b/lib/cron/crontab.c
@@ -0,0 +1,50 @@
+/* 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 <string.h>
+
+#include "crontab.h"
+
+void cron_tm_to_mask(crontab_t *out, struct tm *t)
+{
+ memset(out, 0, sizeof(*out));
+ out->minute = 1UL << ((unsigned long)t->tm_min);
+ out->hour = 1 << t->tm_hour;
+ out->dayofmonth = 1 << (t->tm_mday - 1);
+ out->month = 1 << t->tm_mon;
+ out->dayofweek = 1 << t->tm_wday;
+}
+
+bool cron_should_run(const crontab_t *t, const crontab_t *mask)
+{
+ if ((t->minute & mask->minute) == 0)
+ return false;
+
+ if ((t->hour & mask->hour) == 0)
+ return false;
+
+ if ((t->dayofmonth & mask->dayofmonth) == 0)
+ return false;
+
+ if ((t->month & mask->month) == 0)
+ return false;
+
+ if ((t->dayofweek & mask->dayofweek) == 0)
+ return false;
+
+ return true;
+}
diff --git a/lib/cron/delcron.c b/lib/cron/delcron.c
new file mode 100644
index 0000000..1877db1
--- /dev/null
+++ b/lib/cron/delcron.c
@@ -0,0 +1,38 @@
+/* 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 <stdlib.h>
+
+#include "crontab.h"
+
+void delcron(crontab_t *cron)
+{
+ exec_t *e;
+
+ if (cron == NULL)
+ return;
+
+ while (cron->exec != NULL) {
+ e = cron->exec;
+ cron->exec = e->next;
+
+ free(e);
+ }
+
+ free(cron->ctty);
+ free(cron);
+}
diff --git a/lib/cron/rdcron.c b/lib/cron/rdcron.c
new file mode 100644
index 0000000..42936ce
--- /dev/null
+++ b/lib/cron/rdcron.c
@@ -0,0 +1,503 @@
+/* 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;
+ rdline_t rd;
+ int fd, ret;
+
+ fd = openat(dirfd, filename, O_RDONLY);
+ if (fd < 0) {
+ perror(filename);
+ return NULL;
+ }
+
+ cron = calloc(1, sizeof(*cron));
+ if (cron == NULL) {
+ fputs("out of memory\n", stderr);
+ goto out;
+ }
+
+ cron->pid = -1;
+
+ rdline_init(&rd, fd, filename, 0, NULL);
+ ret = rdcfg(cron, &rd, cron_params, ARRAY_SIZE(cron_params), 0);
+ if (ret) {
+ delcron(cron);
+ cron = NULL;
+ }
+out:
+ close(fd);
+ return cron;
+}
diff --git a/lib/include/crontab.h b/lib/include/crontab.h
new file mode 100644
index 0000000..408d276
--- /dev/null
+++ b/lib/include/crontab.h
@@ -0,0 +1,56 @@
+/* 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/>.
+ */
+#ifndef CRONTAB_H
+#define CRONTAB_H
+
+#include <sys/types.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <time.h>
+
+#include "service.h"
+
+typedef struct crontab_t {
+ struct crontab_t *next;
+ exec_t *exec;
+ char *ctty;
+
+ uid_t uid;
+ gid_t gid;
+ pid_t pid;
+
+ uint64_t minute;
+ uint32_t hour;
+ uint32_t dayofmonth;
+ uint16_t month;
+ uint8_t dayofweek;
+
+ unsigned int tty_truncate : 1;
+} crontab_t;
+
+crontab_t *rdcron(int dirfd, const char *filename);
+
+void delcron(crontab_t *cron);
+
+int cronscan(const char *directory, crontab_t **list);
+
+void cron_tm_to_mask(crontab_t *out, struct tm *t);
+
+bool cron_should_run(const crontab_t *t, const crontab_t *mask);
+
+#endif /* CRONTAB_H */
diff --git a/lib/include/libcfg.h b/lib/include/libcfg.h
index 83b9213..8096f1b 100644
--- a/lib/include/libcfg.h
+++ b/lib/include/libcfg.h
@@ -19,6 +19,7 @@
#define LIBCONFIG_H
#include <stdbool.h>
+#include <stddef.h>
typedef struct {
int fd; /* input file descriptor */
@@ -38,6 +39,20 @@ typedef struct {
bool comment; /* inside a comment */
} rdline_t;
+typedef struct {
+ /* keyword to map the callback to */
+ const char *key;
+
+ /*
+ If set, allow grouping repetitions of the keyword in a single
+ multi line '{' ... '}' block. The callback is called for each
+ line.
+ */
+ unsigned int allow_block : 1;
+
+ int (*handle)(void *obj, char *arg, rdline_t *rd, int flags);
+} cfg_param_t;
+
/*
Initialize the config line scanner.
@@ -104,4 +119,13 @@ int pack_argv(char *str);
*/
int splitkv(rdline_t *rd, char **k, char **v);
+/*
+ Parse a configuration file containing '<keyword> [arguments...]' lines.
+ The cfgobj and flags are passed to the callback in the params array.
+
+ Returns zero on success.
+ */
+int rdcfg(void *cfgobj, rdline_t *rd, const cfg_param_t *params, size_t count,
+ int flags);
+
#endif /* LIBCONFIG_H */
diff --git a/lib/libcfg/rdcfg.c b/lib/libcfg/rdcfg.c
new file mode 100644
index 0000000..71a994f
--- /dev/null
+++ b/lib/libcfg/rdcfg.c
@@ -0,0 +1,83 @@
+/* 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 "libcfg.h"
+
+#include <string.h>
+#include <stdio.h>
+
+static const cfg_param_t *find_param(rdline_t *rd, const char *name,
+ const cfg_param_t *params, size_t count)
+{
+ size_t i;
+
+ for (i = 0; i < count; ++i) {
+ if (!strcmp(params[i].key, name))
+ return params + i;
+ }
+
+ fprintf(stderr, "%s: %zu: unknown keyword '%s'\n",
+ rd->filename, rd->lineno, name);
+ return NULL;
+}
+
+int rdcfg(void *cfgobj, rdline_t *rd, const cfg_param_t *params, size_t count,
+ int flags)
+{
+ const cfg_param_t *p;
+ char *key, *value;
+ int ret;
+
+ while ((ret = rdline(rd)) == 0) {
+ if (splitkv(rd, &key, &value))
+ return -1;
+
+ p = find_param(rd, key, params, count);
+ if (p == NULL)
+ return -1;
+
+ if (p->allow_block && *value == '{') {
+ for (++value; *value == ' '; ++value)
+ ;
+
+ if (*value != '\0') {
+ ret = p->handle(cfgobj, value, rd, flags);
+ if (ret)
+ return -1;
+ }
+
+ while ((ret = rdline(rd)) == 0) {
+ if (strcmp(rd->buffer, "}") == 0)
+ break;
+ if (p->handle(cfgobj, rd->buffer, rd, flags))
+ return -1;
+ }
+
+ if (ret < 0)
+ return -1;
+ if (ret > 0)
+ goto fail_bra;
+ } else if (p->handle(cfgobj, value, rd, flags)) {
+ return -1;
+ }
+ }
+
+ return ret < 0 ? -1 : 0;
+fail_bra:
+ fprintf(stderr, "%s: missing '}' before end-of-file\n", rd->filename);
+ return -1;
+}
diff --git a/lib/util/rdsvc.c b/lib/util/rdsvc.c
index 3e146a2..747d753 100644
--- a/lib/util/rdsvc.c
+++ b/lib/util/rdsvc.c
@@ -60,16 +60,24 @@ static int try_pack_argv(char *str, rdline_t *rd)
return count;
}
-static int svc_desc(service_t *svc, char *arg, rdline_t *rd)
+static int svc_desc(void *user, char *arg, rdline_t *rd, int flags)
{
+ service_t *svc = user;
+ (void)flags;
+
if (try_unescape(arg, rd))
return -1;
svc->desc = try_strdup(arg, rd);
return svc->desc == NULL ? -1 : 0;
}
-static int svc_tty(service_t *svc, char *arg, rdline_t *rd)
+static int svc_tty(void *user, char *arg, rdline_t *rd, int flags)
{
+ service_t *svc = user;
+
+ if (flags & RDSVC_NO_CTTY)
+ return 0;
+
if (strncmp(arg, "truncate", 8) == 0 && isspace(arg[8])) {
svc->flags |= SVC_FLAG_TRUNCATE_OUT;
arg += 8;
@@ -84,10 +92,14 @@ static int svc_tty(service_t *svc, char *arg, rdline_t *rd)
return svc->ctty == NULL ? -1 : 0;
}
-static int svc_exec(service_t *svc, char *arg, rdline_t *rd)
+static int svc_exec(void *user, char *arg, rdline_t *rd, int flags)
{
+ service_t *svc = user;
exec_t *e, *end;
+ if (flags & RDSVC_NO_EXEC)
+ return 0;
+
e = calloc(1, sizeof(*e) + strlen(arg) + 1);
if (e == NULL) {
fprintf(stderr, "%s: %zu: out of memory\n",
@@ -111,8 +123,13 @@ static int svc_exec(service_t *svc, char *arg, rdline_t *rd)
return 0;
}
-static int svc_before(service_t *svc, char *arg, rdline_t *rd)
+static int svc_before(void *user, char *arg, rdline_t *rd, int flags)
{
+ service_t *svc = user;
+
+ if (flags & RDSVC_NO_DEPS)
+ return 0;
+
if (svc->before != NULL) {
fprintf(stderr, "%s: %zu: 'before' dependencies respecified\n",
rd->filename, rd->lineno);
@@ -127,8 +144,13 @@ static int svc_before(service_t *svc, char *arg, rdline_t *rd)
return (svc->num_before < 0) ? -1 : 0;
}
-static int svc_after(service_t *svc, char *arg, rdline_t *rd)
+static int svc_after(void *user, char *arg, rdline_t *rd, int flags)
{
+ service_t *svc = user;
+
+ if (flags & RDSVC_NO_DEPS)
+ return 0;
+
if (svc->after != NULL) {
fprintf(stderr, "%s: %zu: 'after' dependencies respecified\n",
rd->filename, rd->lineno);
@@ -143,9 +165,11 @@ static int svc_after(service_t *svc, char *arg, rdline_t *rd)
return (svc->num_after < 0) ? -1 : 0;
}
-static int svc_type(service_t *svc, char *arg, rdline_t *rd)
+static int svc_type(void *user, char *arg, rdline_t *rd, int flags)
{
+ service_t *svc = user;
int count = try_pack_argv(arg, rd);
+ (void)flags;
if (count < 1)
return -1;
@@ -189,9 +213,11 @@ fail_limit:
return -1;
}
-static int svc_target(service_t *svc, char *arg, rdline_t *rd)
+static int svc_target(void *user, char *arg, rdline_t *rd, int flags)
{
+ service_t *svc = user;
int target;
+ (void)flags;
if (try_unescape(arg, rd))
return -1;
@@ -208,48 +234,23 @@ static int svc_target(service_t *svc, char *arg, rdline_t *rd)
return 0;
}
-static const struct svc_param {
- const char *key;
-
- unsigned int allow_block : 1;
-
- int flags;
-
- int (*handle)(service_t *svc, char *arg, rdline_t *rd);
-} svc_params[] = {
- { "description", 0, 0, svc_desc },
- { "exec", 1, RDSVC_NO_EXEC, svc_exec },
- { "type", 0, 0, svc_type },
- { "target", 0, 0, svc_target },
- { "tty", 0, RDSVC_NO_CTTY, svc_tty },
- { "before", 0, RDSVC_NO_DEPS, svc_before },
- { "after", 0, RDSVC_NO_DEPS, svc_after },
+static const cfg_param_t svc_params[] = {
+ { "description", 0, svc_desc },
+ { "exec", 1, svc_exec },
+ { "type", 0, svc_type },
+ { "target", 0, svc_target },
+ { "tty", 0, svc_tty },
+ { "before", 0, svc_before },
+ { "after", 0, svc_after },
};
-static const struct svc_param *find_param(rdline_t *rd, const char *name)
-{
- size_t i;
-
- for (i = 0; i < ARRAY_SIZE(svc_params); ++i) {
- if (!strcmp(svc_params[i].key, name))
- return svc_params + i;
- }
-
- fprintf(stderr, "%s: %zu: unknown keyword '%s'\n",
- rd->filename, rd->lineno, name);
- return NULL;
-}
-
-
service_t *rdsvc(int dirfd, const char *filename, int flags)
{
- const struct svc_param *p;
const char *arg, *args[1];
service_t *svc = NULL;
- char *key, *value;
size_t argc, nlen;
rdline_t rd;
- int fd, ret;
+ int fd;
fd = openat(dirfd, filename, O_RDONLY);
if (fd < 0) {
@@ -281,54 +282,11 @@ service_t *rdsvc(int dirfd, const char *filename, int flags)
memcpy(svc->name, filename, nlen);
- while ((ret = rdline(&rd)) == 0) {
- if (splitkv(&rd, &key, &value))
- goto fail;
-
- p = find_param(&rd, key);
- if (p == NULL)
- goto fail;
-
- if (p->allow_block && *value == '{') {
- for (++value; *value == ' '; ++value)
- ;
-
- if (!(flags & p->flags)) {
- if (*value != '\0' &&
- p->handle(svc, value, &rd)) {
- goto fail;
- }
- }
-
- while ((ret = rdline(&rd)) == 0) {
- if (strcmp(rd.buffer, "}") == 0)
- break;
- if (flags & p->flags)
- continue;
- if (p->handle(svc, rd.buffer, &rd))
- goto fail;
- }
-
- if (ret < 0)
- goto fail;
- if (ret > 0)
- goto fail_bra;
- } else {
- if (flags & p->flags)
- continue;
- if (p->handle(svc, value, &rd))
- goto fail;
- }
- }
-
- if (ret < 0)
+ if (rdcfg(svc, &rd, svc_params, ARRAY_SIZE(svc_params), flags))
goto fail;
close(fd);
return svc;
-fail_bra:
- fprintf(stderr, "%s: missing '}' before end-of-file\n", filename);
- goto fail;
fail_oom:
fputs("out of memory\n", stderr);
fail:
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-01 10:43:00 +0000