+/* SPDX-License-Identifier: LGPL-2.1+ */
#pragma once
-/***
- This file is part of systemd.
-
- Copyright 2010 Lennart Poettering
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd 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
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
#include <errno.h>
#include <stdbool.h>
#include <stddef.h>
#include "log.h"
#include "macro.h"
-/* An abstract parser for simple, line based, shallow configuration
- * files consisting of variable assignments only. */
+/* An abstract parser for simple, line based, shallow configuration files consisting of variable assignments only. */
+
+typedef enum ConfigParseFlags {
+ CONFIG_PARSE_RELAXED = 1 << 0,
+ CONFIG_PARSE_ALLOW_INCLUDE = 1 << 1,
+ CONFIG_PARSE_WARN = 1 << 2,
+ CONFIG_PARSE_REFUSE_BOM = 1 << 3,
+} ConfigParseFlags;
+
+/* Argument list for parsers of specific configuration settings. */
+#define CONFIG_PARSER_ARGUMENTS \
+ const char *unit, \
+ const char *filename, \
+ unsigned line, \
+ const char *section, \
+ unsigned section_line, \
+ const char *lvalue, \
+ int ltype, \
+ const char *rvalue, \
+ void *data, \
+ void *userdata
/* Prototype for a parser for a specific configuration setting */
-typedef int (*ConfigParserCallback)(const char *unit,
- const char *filename,
- unsigned line,
- const char *section,
- unsigned section_line,
- const char *lvalue,
- int ltype,
- const char *rvalue,
- void *data,
- void *userdata);
+typedef int (*ConfigParserCallback)(CONFIG_PARSER_ARGUMENTS);
+
+/* A macro declaring the a function prototype, following the typedef above, simply because it's so cumbersomely long
+ * otherwise. (And current emacs gets irritatingly slow when editing files that contain lots of very long function
+ * prototypes on the same screen…) */
+#define CONFIG_PARSER_PROTOTYPE(name) int name(CONFIG_PARSER_ARGUMENTS)
/* Wraps information for parsing a specific configuration variable, to
* be stored in a simple array */
const char *sections, /* nulstr */
ConfigItemLookup lookup,
const void *table,
- bool relaxed,
- bool allow_include,
- bool warn,
+ ConfigParseFlags flags,
void *userdata);
int config_parse_many_nulstr(
const char *sections, /* nulstr */
ConfigItemLookup lookup,
const void *table,
- bool relaxed,
+ ConfigParseFlags flags,
void *userdata);
int config_parse_many(
const char *sections, /* nulstr */
ConfigItemLookup lookup,
const void *table,
- bool relaxed,
+ ConfigParseFlags flags,
void *userdata);
-/* Generic parsers */
-int config_parse_int(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
-int config_parse_unsigned(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
-int config_parse_long(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
-int config_parse_uint8(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
-int config_parse_uint16(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
-int config_parse_uint32(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
-int config_parse_uint64(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
-int config_parse_double(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
-int config_parse_iec_size(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
-int config_parse_si_size(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
-int config_parse_iec_uint64(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
-int config_parse_bool(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
-int config_parse_tristate(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
-int config_parse_string(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
-int config_parse_path(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
-int config_parse_strv(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
-int config_parse_sec(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
-int config_parse_nsec(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
-int config_parse_mode(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
-int config_parse_log_facility(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
-int config_parse_log_level(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
-int config_parse_signal(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
-int config_parse_personality(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
-int config_parse_ifname(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
-int config_parse_ip_port(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
-
-#define DEFINE_CONFIG_PARSE_ENUM(function,name,type,msg) \
- int function(const char *unit, \
- const char *filename, \
- unsigned line, \
- const char *section, \
- unsigned section_line, \
- const char *lvalue, \
- int ltype, \
- const char *rvalue, \
- void *data, \
- void *userdata) { \
+CONFIG_PARSER_PROTOTYPE(config_parse_int);
+CONFIG_PARSER_PROTOTYPE(config_parse_unsigned);
+CONFIG_PARSER_PROTOTYPE(config_parse_long);
+CONFIG_PARSER_PROTOTYPE(config_parse_uint8);
+CONFIG_PARSER_PROTOTYPE(config_parse_uint16);
+CONFIG_PARSER_PROTOTYPE(config_parse_uint32);
+CONFIG_PARSER_PROTOTYPE(config_parse_uint64);
+CONFIG_PARSER_PROTOTYPE(config_parse_double);
+CONFIG_PARSER_PROTOTYPE(config_parse_iec_size);
+CONFIG_PARSER_PROTOTYPE(config_parse_si_size);
+CONFIG_PARSER_PROTOTYPE(config_parse_iec_uint64);
+CONFIG_PARSER_PROTOTYPE(config_parse_bool);
+CONFIG_PARSER_PROTOTYPE(config_parse_tristate);
+CONFIG_PARSER_PROTOTYPE(config_parse_string);
+CONFIG_PARSER_PROTOTYPE(config_parse_path);
+CONFIG_PARSER_PROTOTYPE(config_parse_strv);
+CONFIG_PARSER_PROTOTYPE(config_parse_sec);
+CONFIG_PARSER_PROTOTYPE(config_parse_sec_def_infinity);
+CONFIG_PARSER_PROTOTYPE(config_parse_nsec);
+CONFIG_PARSER_PROTOTYPE(config_parse_mode);
+CONFIG_PARSER_PROTOTYPE(config_parse_warn_compat);
+CONFIG_PARSER_PROTOTYPE(config_parse_log_facility);
+CONFIG_PARSER_PROTOTYPE(config_parse_log_level);
+CONFIG_PARSER_PROTOTYPE(config_parse_signal);
+CONFIG_PARSER_PROTOTYPE(config_parse_personality);
+CONFIG_PARSER_PROTOTYPE(config_parse_permille);
+CONFIG_PARSER_PROTOTYPE(config_parse_ifname);
+CONFIG_PARSER_PROTOTYPE(config_parse_ip_port);
+CONFIG_PARSER_PROTOTYPE(config_parse_mtu);
+CONFIG_PARSER_PROTOTYPE(config_parse_rlimit);
+
+typedef enum Disabled {
+ DISABLED_CONFIGURATION,
+ DISABLED_LEGACY,
+ DISABLED_EXPERIMENTAL,
+} Disabled;
+
+#define DEFINE_CONFIG_PARSE(function, parser, msg) \
+ CONFIG_PARSER_PROTOTYPE(function) { \
+ int *i = data, r; \
\
+ assert(filename); \
+ assert(lvalue); \
+ assert(rvalue); \
+ assert(data); \
+ \
+ r = parser(rvalue); \
+ if (r < 0) { \
+ log_syntax(unit, LOG_ERR, filename, line, r, \
+ msg ", ignoring: %s", rvalue); \
+ return 0; \
+ } \
+ \
+ *i = r; \
+ return 0; \
+ }
+
+#define DEFINE_CONFIG_PARSE_PTR(function, parser, type, msg) \
+ CONFIG_PARSER_PROTOTYPE(function) { \
+ type *i = data; \
+ int r; \
+ \
+ assert(filename); \
+ assert(lvalue); \
+ assert(rvalue); \
+ assert(data); \
+ \
+ r = parser(rvalue, i); \
+ if (r < 0) \
+ log_syntax(unit, LOG_ERR, filename, line, r, \
+ msg ", ignoring: %s", rvalue); \
+ \
+ return 0; \
+ }
+
+#define DEFINE_CONFIG_PARSE_ENUM(function, name, type, msg) \
+ CONFIG_PARSER_PROTOTYPE(function) { \
type *i = data, x; \
\
assert(filename); \
assert(rvalue); \
assert(data); \
\
- if ((x = name##_from_string(rvalue)) < 0) { \
- log_syntax(unit, LOG_ERR, filename, line, -x, \
+ x = name##_from_string(rvalue); \
+ if (x < 0) { \
+ log_syntax(unit, LOG_ERR, filename, line, 0, \
msg ", ignoring: %s", rvalue); \
return 0; \
} \
return 0; \
}
-#define DEFINE_CONFIG_PARSE_ENUMV(function,name,type,invalid,msg) \
- int function(const char *unit, \
- const char *filename, \
- unsigned line, \
- const char *section, \
- unsigned section_line, \
- const char *lvalue, \
- int ltype, \
- const char *rvalue, \
- void *data, \
- void *userdata) { \
- \
+#define DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT(function, name, type, default_value, msg) \
+ CONFIG_PARSER_PROTOTYPE(function) { \
+ type *i = data, x; \
+ \
+ assert(filename); \
+ assert(lvalue); \
+ assert(rvalue); \
+ assert(data); \
+ \
+ if (isempty(rvalue)) { \
+ *i = default_value; \
+ return 0; \
+ } \
+ \
+ x = name##_from_string(rvalue); \
+ if (x < 0) { \
+ log_syntax(unit, LOG_ERR, filename, line, 0, \
+ msg ", ignoring: %s", rvalue); \
+ return 0; \
+ } \
+ \
+ *i = x; \
+ return 0; \
+ }
+
+#define DEFINE_CONFIG_PARSE_ENUMV(function, name, type, invalid, msg) \
+ CONFIG_PARSER_PROTOTYPE(function) { \
type **enums = data, x, *ys; \
_cleanup_free_ type *xs = NULL; \
const char *word, *state; \
return -ENOMEM; \
\
if ((x = name##_from_string(en)) < 0) { \
- log_syntax(unit, LOG_ERR, filename, line, \
- -x, msg ", ignoring: %s", en); \
+ log_syntax(unit, LOG_ERR, filename, line, 0, \
+ msg ", ignoring: %s", en); \
continue; \
} \
\
for (ys = xs; x != invalid && *ys != invalid; ys++) { \
if (*ys == x) { \
- log_syntax(unit, LOG_ERR, filename, \
- line, -x, \
- "Duplicate entry, ignoring: %s", \
- en); \
+ log_syntax(unit, LOG_NOTICE, filename, \
+ line, 0, \
+ "Duplicate entry, ignoring: %s", \
+ en); \
x = invalid; \
} \
} \
*(xs + i) = invalid; \
} \
\
- free(*enums); \
- *enums = xs; \
- xs = NULL; \
- \
+ free_and_replace(*enums, xs); \
return 0; \
}
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