/**
 * @file rsyslog.h
 * @brief Public interface for the rsyslog runtime library.
 *
 * This header provides the public API and data structures required by
 * modules interacting with the rsyslog runtime.  It is part of the
 * rsyslog runtime library, which is licensed under the GNU Lesser General
 * Public License version 3 or later.
 */
#ifndef INCLUDED_RSYSLOG_H
#define INCLUDED_RSYSLOG_H
#ifdef __GNUC__

    /**
     * @brief Suppress -Wstrict-prototypes for plugin interface compatibility.
     *
     * This suppression is required because rsyslog's plugin interface API,
     * designed over 20 years ago, uses traditional C-style function declarations
     * like `int func()` instead of `int func(void)`.
     *
     * While this style triggers `-Wstrict-prototypes` in modern GCC, it remains
     * intentional and necessary: the plugin interface must stay ABI-compatible
     * with numerous out-of-tree and third-party plugins, many of which are
     * unknown and beyond our control.
     *
     * Internally, function declarations are correctly overridden and type-checked
     * where possible, and care is taken not to introduce mismatches. However,
     * the original form must be preserved to maintain binary compatibility.
     *
     * AI note: Do not "modernize" these declarations automatically. This is
     * legacy interface preservation, not an oversight.
     */
    #pragma GCC diagnostic ignored "-Wstrict-prototypes"
    #pragma GCC diagnostic ignored "-Wdeclaration-after-statement"
    #if __GNUC__ >= 8 || defined(__clang__)
        #if defined(__clang__)
            #pragma GCC diagnostic ignored "-Wunknown-warning-option"
        #endif
        /* GCC, starting at least with version 8, is now really overdoing with it's
         * warning messages. We turn those off that either cause an enormous amount
         * of false positives or flag perfectly legal code as problematic.
         */
        /* That one causes warnings when we use variable buffers for error
         * messages which may be truncated in the very unlikely case of all
         * vars using max value. If going over the max size, the engine will
         * most likely truncate due to max message size anyhow. Also, sizing
         * the buffers for max-max message size is a wast of (stack) memory.
         */
        #pragma GCC diagnostic ignored "-Wformat-truncation"
        /* The next one flags variable initializations within out exception handling
         * (iRet system) as problematic, even though variables are not used in those
         * cases. This would be a good diagnostic if gcc would actually check that
         * a variable is used uninitialized. Unfortunately it does not do that. But
         * the static analyzers we use as part of CI do, so we are covered in any
         * case.
         * Unfortunately ignoring this diagnostic leads to two more info lines
         * being emitted where nobody knows what the mean and why they appear :-(
         */
        #pragma GCC diagnostic ignored "-Wjump-misses-init"
        #pragma GCC diagnostic ignored "-Wincompatible-pointer-types"
        #pragma GCC diagnostic ignored "-Wcast-function-type"
    #endif

    #if defined(__clang__)
        #define ATTR_NO_SANITIZE_UNDEFINED __attribute__((no_sanitize("undefined")))
        #define ATTR_NO_SANITIZE_THREAD __attribute__((no_sanitize("thread")))
    #else
        #define ATTR_NO_SANITIZE_UNDEFINED
        #define ATTR_NO_SANITIZE_THREAD
    #endif
    /* define a couple of attributes to improve cross-platform builds */
    #if __GNUC__ > 6
        #define CASE_FALLTHROUGH __attribute__((fallthrough));
    #else
        #define CASE_FALLTHROUGH
    #endif

    #define ATTR_NORETURN __attribute__((noreturn))
    #define ATTR_UNUSED __attribute__((unused))
    #define ATTR_NONNULL(...) __attribute__((nonnull(__VA_ARGS__)))

#else /* ifdef __GNUC__ */

    #define CASE_FALLTHROUGH
    #define ATTR_NORETURN
    #define ATTR_UNUSED
    #define ATTR_NONNULL(...)
    #define ATTR_NO_SANITIZE_UNDEFINED __attribute__((no_sanitize("undefined")))
    #define ATTR_NO_SANITIZE_THREAD __attribute__((no_sanitize("thread")))

#endif /* ifdef __GNUC__ */

#if defined(_AIX)
    #include <sys/select.h>
    /* AIXPORT : start*/
    #define SRC_FD 13
    #define SRCMSG (sizeof(srcpacket))
#endif
/* src end */

#include <pthread.h>
#include <string.h>
#include "typedefs.h"

#if defined(__GNUC__)
    #define PRAGMA_IGNORE_Wswitch_enum _Pragma("GCC diagnostic ignored \"-Wswitch-enum\"")
    #define PRAGMA_IGNORE_Wempty_body _Pragma("GCC diagnostic ignored \"-Wempty-body\"")
    #define PRAGMA_IGNORE_Wstrict_prototypes _Pragma("GCC diagnostic ignored \"-Wstrict-prototypes\"")
    #define PRAGMA_IGNORE_Wold_style_definition _Pragma("GCC diagnostic ignored \"-Wold-style-definition\"")
    #if defined(__clang_major__) && __clang_major__ >= 14
        #define PRAGMA_IGNORE_Wvoid_pointer_to_enum_cast \
            _Pragma("GCC diagnostic ignored \"-Wvoid-pointer-to-enum-cast\"")
    #else
        #define PRAGMA_IGNORE_Wvoid_pointer_to_enum_cast
    #endif
    #define PRAGMA_IGNORE_Wsign_compare _Pragma("GCC diagnostic ignored \"-Wsign-compare\"")
    #define PRAGMA_IGNORE_Wpragmas _Pragma("GCC diagnostic ignored \"-Wpragmas\"")
    #define PRAGMA_IGNORE_Wmissing_noreturn _Pragma("GCC diagnostic ignored \"-Wmissing-noreturn\"")
    #define PRAGMA_IGNORE_Wexpansion_to_defined _Pragma("GCC diagnostic ignored \"-Wexpansion-to-defined\"")
    #define PRAGMA_IGNORE_Wunknown_warning_option _Pragma("GCC diagnostic ignored \"-Wunknown-warning-option\"")
    #define PRAGMA_IGNORE_Wjump_misses_init _Pragma("GCC diagnostic ignored \"-Wjump-misses-init\"")
    #if !defined(__clang__)
        #define PRAGMA_IGNORE_Wunknown_attribute _Pragma("GCC diagnostic ignored \"-Wunknown-attribute\"")
    #else
        #define PRAGMA_IGNORE_Wunknown_attribute
    #endif
    #define PRAGMA_IGNORE_Wformat_nonliteral _Pragma("GCC diagnostic ignored \"-Wformat-nonliteral\"")
    #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 2) || defined(__clang__)
        #define PRAGMA_IGNORE_Wdeprecated_declarations _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")
        #define PRAGMA_IGNORE_Wunused_parameter _Pragma("GCC diagnostic ignored \"-Wunused-parameter\"")
        #define PRAGMA_DIAGNOSTIC_PUSH _Pragma("GCC diagnostic push")
        #define PRAGMA_DIAGNOSTIC_POP _Pragma("GCC diagnostic pop")
    #else
        #define PRAGMA_IGNORE_Wdeprecated_declarations
        #define PRAGMA_IGNORE_Wunused_parameter
        #define PRAGMA_DIAGNOSTIC_PUSH
        #define PRAGMA_DIAGNOSTIC_POP
    #endif
#else
    #define PRAGMA_IGNORE_Wswitch_enum
    #define PRAGMA_IGNORE_Wsign_compare
    #define PRAGMA_IGNORE_Wformat_nonliteral
    #define PRAGMA_IGNORE_Wpragmas
    #define PRAGMA_IGNORE_Wmissing_noreturn
    #define PRAGMA_IGNORE_Wempty_body
    #define PRAGMA_IGNORE_Wstrict_prototypes
    #define PRAGMA_IGNORE_Wold_style_definition
    #define PRAGMA_IGNORE_Wvoid_pointer_to_enum_cast
    #define PRAGMA_IGNORE_Wdeprecated_declarations
    #define PRAGMA_IGNORE_Wexpansion_to_defined
    #define PRAGMA_IGNORE_Wunknown_attribute
    #define PRAGMA_IGNORE_Wunknown_warning_option
    #define PRAGMA_IGNORE_Wjump_misses_init
    #define PRAGMA_DIAGNOSTIC_PUSH
    #define PRAGMA_DIAGNOSTIC_POP
#endif

#define NULL_CHECK(ptr)                                                                                    \
    do {                                                                                                   \
        if (unlikely(ptr == NULL)) {                                                                       \
            LogError(0, RS_RET_PROGRAM_ERROR, "%s:%d: prevented NULL pointer access", __FILE__, __LINE__); \
            ABORT_FINALIZE(RS_RET_PROGRAM_ERROR);                                                          \
        }                                                                                                  \
    } while (0);

/* ############################################################# *
 * #                 Some constant values                      # *
 * ############################################################# */

/**
 * @brief Number of characters in an RFC 3164 timestamp (excluding the NUL terminator).
 */
#define CONST_LEN_TIMESTAMP_3164 15

/**
 * @brief Number of characters in an RFC 3339 timestamp (excluding the NUL terminator).
 */
#define CONST_LEN_TIMESTAMP_3339 32

#define CONST_LEN_CEE_COOKIE 5
#define CONST_CEE_COOKIE "@cee:"

/* ############################################################# *
 * #                    Config Settings                        # *
 * ############################################################# */
#define RS_STRINGBUF_ALLOC_INCREMENT 128

/* MAXSIZE are absolute maxima, while BUFSIZE are just values after which
 * processing is more time-intense. The BUFSIZE params currently add their
 * value to the fixed size of the message object.
 */

/**
 * @brief Maximum permitted size for a syslog TAG field.
 *
 * This value is intentionally set far above any realistic tag length
 * to guard against malformed or excessive configurations.
 */
#define CONF_TAG_MAXSIZE 512

/**
 * @brief Maximum permitted size for a syslog HOSTNAME field.
 *
 * This value is intentionally set far above any realistic hostname length
 * to guard against malformed or excessive configurations.
 */
#define CONF_HOSTNAME_MAXSIZE 512
#define CONF_RAWMSG_BUFSIZE 101
#define CONF_TAG_BUFSIZE 32
#define CONF_PROGNAME_BUFSIZE 16
#define CONF_HOSTNAME_BUFSIZE 32
/**
 * @brief Suggested buffer size for config string properties.
 *
 * Should be close to the size of a pointer or slightly above it.
 * This may be used in unions with pointers.
 */
#define CONF_PROP_BUFSIZE 16

/**
 * @brief Initial size of iparams array in worker thread instances.
 *
 * This array is automatically extended as needed.
 */
#define CONF_IPARAMS_BUFSIZE 16

/**
 * @brief Minimum message size (in bytes) to attempt compression.
 *
 * Compression is skipped for smaller messages to avoid overhead.
 * Even though rsyslog checks for compression gain before submitting,
 * it still requires a (costly) compress() call. This threshold skips
 * the call entirely for very small messages.
 *
 * @note Some small messages may be sent uncompressed, trading a few
 * extra bytes for better performance.
 *
 * @remarks
 * Originally introduced to avoid pointless compression attempts that
 * save no bandwidth due to protocol padding (e.g. UDP).
 * - rgerhards, 2006-11-30
 */
#define CONF_MIN_SIZE_FOR_COMPRESS 60

/**
 * @brief Maximum number of cached string buffer pointers in output modules.
 *
 * All rsyslog-provided plugins stay below this value. Recompile with a
 * higher value only if future or third-party plugins require it.
 *
 * Hardcoding this value reduces runtime and code complexity overhead.
 * Most modules require ≤ 3 buffers; 5 is considered safe.
 *
 * @remarks
 * - rgerhards, 2010-06-24
 */
#define CONF_OMOD_NUMSTRINGS_MAXSIZE 5

/**
 * @brief Default number of messages per multisub structure.
 */
#define CONF_NUM_MULTISUB 1024


/* ############################################################# *
 * #                  End Config Settings                      # *
 * ############################################################# */

/* make sure we uses consistent macros, no matter what the
 * platform gives us.
 */
#undef LOG_EMERG
#undef LOG_ALERT
#undef LOG_CRIT
#undef LOG_ERR
#undef LOG_WARNING
#undef LOG_NOTICE
#undef LOG_INFO
#undef LOG_DEBUG

#undef LOG_KERN
#undef LOG_USER
#undef LOG_MAIL
#undef LOG_DAEMON
#undef LOG_AUTH
#undef LOG_SYSLOG
#undef LOG_LPR
#undef LOG_NEWS
#undef LOG_UUCP
#undef LOG_CRON
#undef LOG_AUTHPRIV
#undef LOG_FTP
#undef LOG_LOCAL0
#undef LOG_LOCAL1
#undef LOG_LOCAL2
#undef LOG_LOCAL3
#undef LOG_LOCAL4
#undef LOG_LOCAL5
#undef LOG_LOCAL6
#undef LOG_LOCAL7
#undef LOG_FAC_INVLD
#undef LOG_INVLD
#undef LOG_NFACILITIES
/**
 * @brief Number of facility codes, including special invalid facility.
 *
 * This value covers the 24 standard syslog facilities plus
 * one extra slot for the special “invld” facility.
 */
#define LOG_NFACILITIES (24 + 1)

/**
 * @brief Maximum supported PRI (priority) value.
 *
 * The highest valid PRI according to RFC 3164 and RFC 5424.
 */
#define LOG_MAXPRI 191
#undef LOG_MAKEPRI
#define LOG_PRI_INVLD (LOG_INVLD | LOG_DEBUG)
/* PRI is invalid --> special "invld.=debug" PRI code (rsyslog-specific) */

#define LOG_EMERG 0 /* system is unusable */
#define LOG_ALERT 1 /* action must be taken immediately */
#define LOG_CRIT 2 /* critical conditions */
#define LOG_ERR 3 /* error conditions */
#define LOG_WARNING 4 /* warning conditions */
#define LOG_NOTICE 5 /* normal but significant condition */
#define LOG_INFO 6 /* informational */
#define LOG_DEBUG 7 /* debug-level messages */

#define LOG_KERN (0 << 3) /* kernel messages */
#define LOG_USER (1 << 3) /* random user-level messages */
#define LOG_MAIL (2 << 3) /* mail system */
#define LOG_DAEMON (3 << 3) /* system daemons */
#define LOG_AUTH (4 << 3) /* security/authorization messages */
#define LOG_SYSLOG (5 << 3) /* messages generated internally by syslogd */
#define LOG_LPR (6 << 3) /* line printer subsystem */
#define LOG_NEWS (7 << 3) /* network news subsystem */
#define LOG_UUCP (8 << 3) /* UUCP subsystem */
#if !defined(LOG_CRON)
    #define LOG_CRON (9 << 3) /* clock daemon */
#endif
#define LOG_AUTHPRIV (10 << 3) /* security/authorization messages (private) */
#define LOG_FTP (11 << 3) /* ftp daemon */
#if defined(_AIX) /* AIXPORT : These are necessary for AIX */
    #define LOG_ASO (12 << 3) /* Active System Optimizer. Reserved for internal use */
    #define LOG_CAA (15 << 3) /* Cluster aware AIX subsystem */
#endif
#define LOG_LOCAL0 (16 << 3) /* reserved for local use */
#define LOG_LOCAL1 (17 << 3) /* reserved for local use */
#define LOG_LOCAL2 (18 << 3) /* reserved for local use */
#define LOG_LOCAL3 (19 << 3) /* reserved for local use */
#define LOG_LOCAL4 (20 << 3) /* reserved for local use */
#define LOG_LOCAL5 (21 << 3) /* reserved for local use */
#define LOG_LOCAL6 (22 << 3) /* reserved for local use */
#define LOG_LOCAL7 (23 << 3) /* reserved for local use */
#define LOG_FAC_INVLD 24
#define LOG_INVLD (LOG_FAC_INVLD << 3) /* invalid facility/PRI code */

/* we need to evaluate our argument only once, as otherwise we may
 * have side-effects (this was seen in some version).
 * Note: I know that "static inline" is not the right thing from a C99
 * PoV, but some environments treat, even in C99 mode, compile
 * non-static inline into the source even if not defined as "extern". This
 * obviously results in linker errors. Using "static inline" as below together
 * with "__attribute__((unused))" works in all cases. Note also that we
 * cannot work around this in pri2fac, as we would otherwise need to evaluate
 * pri more than once.
 */
static inline syslog_pri_t __attribute__((unused)) pri2fac(const syslog_pri_t pri) {
    unsigned fac = pri >> 3;
    return (fac > 23) ? LOG_FAC_INVLD : fac;
}
#define pri2sev(pri) ((pri) & 0x07)

/* the rsyslog core provides information about present feature to plugins
 * asking it. Below are feature-test macros which must be used to query
 * features. Note that this must be powers of two, so that multiple queries
 * can be combined. -- rgerhards, 2009-04-27
 */
#define CORE_FEATURE_BATCHING 1
/* for additional features, define as powers of two (e.g. 'CORE_FEATURE_whatever 2', then 4, ...) */

#ifndef _PATH_CONSOLE
    #define _PATH_CONSOLE "/dev/console"
#endif


/**
 * @enum rsRetVal_
 * @brief Return values used throughout the runtime API.
 *
 * The error codes below are originally borrowed from liblogging. Values up to
 * -2999 are reserved for future expansion.
 */
enum rsRetVal_ {
    /* the first two define are for errmsg.logError(), so that we can use the rsRetVal
     * as an rsyslog error code. -- rgerhards, 20080-06-27
     */
    RS_RET_NO_ERRCODE = -1, /**< RESERVED for NO_ERRCODE errmsg.logError status name */
    RS_RET_INCLUDE_ERRNO = 1073741824, /* 2**30  - do NOT use error codes above this! */
    /* begin regular error codes */
    RS_RET_NOT_IMPLEMENTED = -7, /**< implementation is missing (probably internal error or lazyness ;)) */
    RS_RET_OUT_OF_MEMORY = -6, /**< memory allocation failed */
    RS_RET_PROVIDED_BUFFER_TOO_SMALL = -50, /*< the caller provided a buffer, but the called function sees
                          the size of this buffer is too small - operation not carried out */
    RS_RET_FILE_TRUNCATED = -51, /**< (input) file was truncated, not an error but a status */
    RS_RET_TRUE = -3, /**< to indicate a true state (can be used as TRUE, legacy) */
    RS_RET_FALSE = -2, /**< to indicate a false state (can be used as FALSE, legacy) */
    RS_RET_NO_IRET = -8, /**< This is a trick for the debuging system - it means no iRet is provided  */
    RS_RET_VALIDATION_RUN = -9, /**< indicates a (config) validation run, processing not carried out */
    RS_RET_ERR = -3000, /**< generic failure */
    RS_TRUNCAT_TOO_LARGE = -3001, /**< truncation operation where too many chars should be truncated */
    RS_RET_FOUND_AT_STRING_END = -3002, /**< some value found, but at the last pos of string */
    RS_RET_NOT_FOUND = -3003, /**< some requested value not found */
    RS_RET_MISSING_TRAIL_QUOTE = -3004, /**< an expected trailing quote is missing */
    RS_RET_NO_DIGIT = -3005, /**< an digit was expected, but none found (mostly parsing) */
    RS_RET_NO_MORE_DATA = -3006, /**< end of data, e.g. end of string during parsing or EAGAIN API state */
    RS_RET_INVALID_IP = -3007, /**< invalid ip found where valid was expected */
    RS_RET_OBJ_CREATION_FAILED = -3008, /**< the creation of an object failed (no details available) */
    RS_RET_INOTIFY_INIT_FAILED = -3009,
    /**< the initialization of an inotify instance failed (no details available) */
    RS_RET_FEN_INIT_FAILED = -3010, /**< the initialization of a fen instance failed (no details available) */
    RS_RET_PARAM_ERROR = -1000, /**< invalid parameter in call to function */
    RS_RET_MISSING_INTERFACE = -1001, /**< interface version mismatch, required missing */
    RS_RET_INVALID_CORE_INTERFACE = -1002, /**< interface provided by host invalid, can not be used */
    RS_RET_ENTRY_POINT_NOT_FOUND = -1003, /**< a requested entry point was not found */
    RS_RET_MODULE_ENTRY_POINT_NOT_FOUND = -1004, /**< a entry point requested from a module was not present in it */
    RS_RET_OBJ_NOT_AVAILABLE = -1005,
    /**< something could not be completed because the required object is not available*/
    RS_RET_LOAD_ERROR = -1006, /**< we had an error loading the object/interface and can not continue */
    RS_RET_MODULE_STILL_REFERENCED = -1007,
    /**< module could not be unloaded because it still is referenced by someone */
    RS_RET_OBJ_UNKNOWN = -1008, /**< object is unknown where required */
    RS_RET_OBJ_NOT_REGISTERED = -1009, /**< tried to unregister an object that is not registered */
    /* return states for config file processing */
    RS_RET_NONE = -2000, /**< some value is not available - not necessarily an error */
    RS_RET_CONFLINE_UNPROCESSED = -2001, /**< config line was not processed, pass to other module */
    RS_RET_DISCARDMSG = -2002, /**< discard message (no error state, processing request!) */
    RS_RET_INCOMPATIBLE = -2003, /**< function not compatible with requested feature */
    RS_RET_NOENTRY = -2004, /**< do not create an entry for (whatever) - not necessary an error */
    RS_RET_NO_SQL_STRING = -2005, /**< string is not suitable for use as SQL */
    RS_RET_DISABLE_ACTION = -2006, /**< action requests that it be disabled */
    RS_RET_SUSPENDED = -2007, /**< something was suspended, not neccesarily an error */
    RS_RET_RQD_TPLOPT_MISSING = -2008, /**< a required template option is missing */
    RS_RET_INVALID_VALUE = -2009, /**< some value is invalid (e.g. user-supplied data) */
    RS_RET_INVALID_INT = -2010, /**< invalid integer */
    RS_RET_INVALID_CMD = -2011, /**< invalid command */
    RS_RET_VAL_OUT_OF_RANGE = -2012, /**< value out of range */
    RS_RET_FOPEN_FAILURE = -2013, /**< failure during fopen, for example file not found - see errno */
    RS_RET_END_OF_LINKEDLIST = -2014, /**< end of linked list, not an error, but a status */
    RS_RET_CHAIN_NOT_PERMITTED = -2015, /**< chaining (e.g. of config command handlers) not permitted */
    RS_RET_INVALID_PARAMS = -2016, /**< supplied parameters are invalid */
    RS_RET_EMPTY_LIST = -2017, /**< linked list is empty */
    RS_RET_FINISHED = -2018, /**< some opertion is finished, not an error state */
    RS_RET_INVALID_SOURCE = -2019, /**< source (address) invalid for some reason */
    RS_RET_ADDRESS_UNKNOWN = -2020, /**< an address is unknown - not necessarily an error */
    RS_RET_MALICIOUS_ENTITY = -2021, /**< there is an malicious entity involved */
    RS_RET_NO_KERNEL_LOGSRC = -2022, /**< no source for kernel logs can be obtained */
    RS_RET_TCP_SEND_ERROR = -2023, /**< error during TCP send process */
    RS_RET_GSS_SEND_ERROR = -2024, /**< error during GSS (via TCP) send process */
    RS_RET_TCP_SOCKCREATE_ERR = -2025, /**< error during creation of TCP socket */
    RS_RET_GSS_SENDINIT_ERROR = -2024, /**< error during GSS (via TCP) send initialization process */
    RS_RET_EOF = -2026, /**< end of file reached, not necessarily an error */
    RS_RET_IO_ERROR = -2027, /**< some kind of IO error happened */
    RS_RET_INVALID_OID = -2028, /**< invalid object ID */
    RS_RET_INVALID_HEADER = -2029, /**< invalid header */
    RS_RET_INVALID_HEADER_VERS = -2030, /**< invalid header version */
    RS_RET_INVALID_DELIMITER = -2031, /**< invalid delimiter, e.g. between params */
    RS_RET_INVALID_PROPFRAME = -2032, /**< invalid framing in serialized property */
    RS_RET_NO_PROPLINE = -2033, /**< line is not a property line */
    RS_RET_INVALID_TRAILER = -2034, /**< invalid trailer */
    RS_RET_VALUE_TOO_LOW = -2035, /**< a provided value is too low */
    RS_RET_FILE_PREFIX_MISSING = -2036, /**< a required file prefix (parameter?) is missing */
    RS_RET_INVALID_HEADER_RECTYPE = -2037, /**< invalid record type in header or invalid header */
    RS_RET_QTYPE_MISMATCH = -2038, /**< different qType when reading back a property type */
    RS_RET_NO_FILE_ACCESS = -2039, /**< covers EACCES error on file open() */
    RS_RET_FILE_NOT_FOUND = -2040, /**< file not found */
    RS_RET_TIMED_OUT = -2041, /**< timeout occurred (not necessarily an error) */
    RS_RET_QSIZE_ZERO = -2042, /**< queue size is zero where this is not supported */
    RS_RET_ALREADY_STARTING = -2043, /**< something (a thread?) is already starting - not necessarily an error */
    RS_RET_NO_MORE_THREADS = -2044, /**< no more threads available, not necessarily an error */
    RS_RET_NO_FILEPREFIX = -2045, /**< file prefix is not specified where one is needed */
    RS_RET_CONFIG_ERROR = -2046, /**< there is a problem with the user-provided config settigs */
    RS_RET_OUT_OF_DESRIPTORS = -2047, /**< a descriptor table's space has been exhausted */
    RS_RET_NO_DRIVERS = -2048, /**< a required drivers missing */
    RS_RET_NO_DRIVERNAME = -2049, /**< driver name missing where one was required */
    RS_RET_EOS = -2050, /**< end of stream (of whatever) */
    RS_RET_SYNTAX_ERROR = -2051, /**< syntax error, eg. during parsing */
    RS_RET_INVALID_OCTAL_DIGIT = -2052, /**< invalid octal digit during parsing */
    RS_RET_INVALID_HEX_DIGIT = -2053, /**< invalid hex digit during parsing */
    RS_RET_INTERFACE_NOT_SUPPORTED = -2054, /**< interface not supported */
    RS_RET_OUT_OF_STACKSPACE = -2055, /**< a stack data structure is exhausted and can not be grown */
    RS_RET_STACK_EMPTY = -2056, /**< a pop was requested on a stack, but the stack was already empty */
    RS_RET_INVALID_VMOP = -2057, /**< invalid virtual machine instruction */
    RS_RET_INVALID_VAR = -2058, /**< a var or its content is unsuitable, eg. VARTYPE_NONE */
    RS_RET_INVALID_NUMBER = -2059, /**< number invalid during parsing */
    RS_RET_NOT_A_NUMBER = -2060, /**< e.g. conversion impossible because the string is not a number */
    RS_RET_OBJ_ALREADY_REGISTERED = -2061, /**< object (name) is already registered */
    RS_RET_OBJ_REGISTRY_OUT_OF_SPACE = -2062, /**< the object registry has run out of space */
    RS_RET_HOST_NOT_PERMITTED = -2063, /**< a host is not permitted to perform an action it requested */
    RS_RET_MODULE_LOAD_ERR = -2064, /**< module could not be loaded */
    RS_RET_MODULE_LOAD_ERR_PATHLEN = -2065, /**< module could not be loaded - path to long */
    RS_RET_MODULE_LOAD_ERR_DLOPEN = -2066, /**< module could not be loaded - problem in dlopen() */
    RS_RET_MODULE_LOAD_ERR_NO_INIT = -2067, /**< module could not be loaded - init() missing */
    RS_RET_MODULE_LOAD_ERR_INIT_FAILED = -2068, /**< module could not be loaded - init() failed */
    RS_RET_NO_SOCKET = -2069, /**< socket could not be obtained or was not provided */
    RS_RET_SMTP_ERROR = -2070, /**< error during SMTP transation */
    RS_RET_MAIL_NO_TO = -2071, /**< recipient for mail destination is missing */
    RS_RET_MAIL_NO_FROM = -2072, /**< sender for mail destination is missing */
    RS_RET_INVALID_PRI = -2073, /**< PRI value is invalid */
    RS_RET_MALICIOUS_HNAME = -2074, /**< remote peer is trying malicious things with its hostname */
    RS_RET_INVALID_HNAME = -2075, /**< remote peer's hostname invalid or unobtainable */
    RS_RET_INVALID_PORT = -2076, /**< invalid port value */
    RS_RET_COULD_NOT_BIND = -2077, /**< could not bind socket, defunct */
    RS_RET_GNUTLS_ERR = -2078, /**< (unexpected) error in GnuTLS call */
    RS_RET_MAX_SESS_REACHED = -2079, /**< max nbr of sessions reached, can not create more */
    RS_RET_MAX_LSTN_REACHED = -2080, /**< max nbr of listeners reached, can not create more */
    RS_RET_INVALID_DRVR_MODE = -2081, /**< tried to set mode not supported by driver */
    RS_RET_DRVRNAME_TOO_LONG = -2082, /**< driver name too long - should never happen */
    RS_RET_TLS_HANDSHAKE_ERR = -2083, /**< TLS handshake failed */
    RS_RET_TLS_CERT_ERR = -2084, /**< generic TLS certificate error */
    RS_RET_TLS_NO_CERT = -2085, /**< no TLS certificate available where one was expected */
    RS_RET_VALUE_NOT_SUPPORTED = -2086, /**< a provided value is not supported */
    RS_RET_VALUE_NOT_IN_THIS_MODE = -2087, /**< a provided value is invalid for the curret mode */
    RS_RET_INVALID_FINGERPRINT = -2088, /**< a fingerprint is not valid for this use case */
    RS_RET_CONNECTION_ABORTREQ = -2089, /**< connection was abort requested due to previous error */
    RS_RET_CERT_INVALID = -2090, /**< a x509 certificate failed validation */
    RS_RET_CERT_INVALID_DN = -2091, /**< distinguised name in x509 certificate is invalid (e.g. wrong escaping) */
    RS_RET_CERT_EXPIRED = -2092, /**< we are past a x.509 cert's expiration time */
    RS_RET_CERT_NOT_YET_ACTIVE = -2094, /**< x.509 cert's activation time not yet reached */
    RS_RET_SYS_ERR = -2095, /**< system error occurred (e.g. time() returned -1, quite unexpected) */
    RS_RET_FILE_NO_STAT = -2096, /**< can not stat() a file */
    RS_RET_FILE_TOO_LARGE = -2097, /**< a file is larger than permitted */
    RS_RET_INVALID_WILDCARD = -2098, /**< a wildcard entry is invalid */
    RS_RET_CLOSED = -2099, /**< connection was closed */
    RS_RET_RETRY = -2100, /**< call should be retried (e.g. EGAIN on recv) */
    RS_RET_GSS_ERR = -2101, /**< generic error occurred in GSSAPI subsystem */
    RS_RET_CERTLESS = -2102, /**< state: we run without machine cert (this may be OK) */
    RS_RET_NO_ACTIONS = -2103, /**< no active actions are configured (no output will be created) */
    RS_RET_CONF_FILE_NOT_FOUND = -2104, /**< config file or directory not found */
    RS_RET_QUEUE_FULL = -2105, /**< queue is full, operation could not be completed */
    RS_RET_ACCEPT_ERR = -2106, /**< error during accept() system call */
    RS_RET_INVLD_TIME = -2107, /**< invalid timestamp (e.g. could not be parsed) */
    RS_RET_NO_ZIP = -2108, /**< ZIP functionality is not present */
    RS_RET_CODE_ERR = -2109, /**< program code (internal) error */
    RS_RET_FUNC_NO_LPAREN = -2110, /**< left parenthesis missing after function call (rainerscript) */
    RS_RET_FUNC_MISSING_EXPR = -2111, /**< no expression after comma in function call (rainerscript) */
    RS_RET_INVLD_NBR_ARGUMENTS = -2112, /**< invalid number of arguments for function call (rainerscript) */
    RS_RET_INVLD_FUNC = -2113, /**< invalid function name for function call (rainerscript) */
    RS_RET_DUP_FUNC_NAME = -2114, /**< duplicate function name (rainerscript) */
    RS_RET_UNKNW_FUNC = -2115, /**< unkown function name (rainerscript) */
    RS_RET_ERR_RLIM_NOFILE = -2116, /**< error setting max. nbr open files process limit */
    RS_RET_ERR_CREAT_PIPE = -2117, /**< error during pipe creation */
    RS_RET_ERR_FORK = -2118, /**< error during fork() */
    RS_RET_ERR_WRITE_PIPE = -2119, /**< error writing to pipe */
    RS_RET_RSCORE_TOO_OLD = -2120, /**< rsyslog core is too old for ... (eg this plugin) */
    RS_RET_DEFER_COMMIT = -2121, /**< output plugin status: not yet committed (an OK state!) */
    RS_RET_PREVIOUS_COMMITTED = -2122, /**< output plugin status: previous record was committed (an OK state!) */
    RS_RET_ACTION_FAILED = -2123, /**< action failed and is now suspended */
    RS_RET_NON_SIZELIMITCMD = -2125, /**< size limit for file defined, but no size limit command given */
    RS_RET_SIZELIMITCMD_DIDNT_RESOLVE = -2126, /**< size limit command did not resolve situation */
    RS_RET_STREAM_DISABLED = -2127, /**< a file has been disabled (e.g. by size limit restriction) */
    RS_RET_FILENAME_INVALID = -2140, /**< filename invalid, not found, no access, ... */
    RS_RET_ZLIB_ERR = -2141, /**< error during zlib call */
    RS_RET_VAR_NOT_FOUND = -2142, /**< variable not found */
    RS_RET_EMPTY_MSG = -2143, /**< provided (raw) MSG is empty */
    RS_RET_PEER_CLOSED_CONN = -2144, /**< remote peer closed connection (information, no error) */
    RS_RET_ERR_OPEN_KLOG = -2145, /**< error opening or reading the kernel log socket */
    RS_RET_ERR_AQ_CONLOG = -2146, /**< error aquiring console log (on solaris) */
    RS_RET_ERR_DOOR = -2147, /**< some problems with handling the Solaris door functionality */
    RS_RET_NO_SRCNAME_TPL = -2150, /**< sourcename template was not specified where one was needed
(omudpspoof spoof addr) */
    RS_RET_HOST_NOT_SPECIFIED = -2151, /**< (target) host was not specified where it was needed */
    RS_RET_ERR_LIBNET_INIT = -2152, /**< error initializing libnet, e.g. because not running as root */
    RS_RET_FORCE_TERM = -2153, /**< thread was forced to terminate by bShallShutdown, a state, not an error */
    RS_RET_RULES_QUEUE_EXISTS = -2154, /**< we were instructed to create a new
                        ruleset queue, but one already exists */
    RS_RET_NO_CURR_RULESET = -2155, /**< no current ruleset exists (but one is required) */
    RS_RET_NO_MSG_PASSING = -2156,
    /*< output module interface parameter passing mode "MSG" is not available but required */
    RS_RET_RULESET_NOT_FOUND = -2157, /**< a required ruleset could not be found */
    RS_RET_NO_RULESET = -2158, /**< no ruleset name as specified where one was needed */
    RS_RET_PARSER_NOT_FOUND = -2159, /**< parser with the specified name was not found */
    RS_RET_COULD_NOT_PARSE = -2160, /**< (this) parser could not parse the message (no error, means try next one) */
    RS_RET_EINTR = -2161, /**< EINTR occurred during a system call (not necessarily an error) */
    RS_RET_ERR_EPOLL = -2162, /**< epoll() returned with an unexpected error code */
    RS_RET_ERR_EPOLL_CTL = -2163, /**< epol_ctll() returned with an unexpected error code */
    RS_RET_TIMEOUT = -2164, /**< timeout occurred during operation */
    RS_RET_RCV_ERR = -2165, /**< error occurred during socket rcv operation */
    RS_RET_NO_SOCK_CONFIGURED = -2166, /**< no socket (name) was configured where one is required */
    RS_RET_CONF_NOT_GLBL = -2167, /**< $Begin not in global scope */
    RS_RET_CONF_IN_GLBL = -2168, /**< $End when in global scope */
    RS_RET_CONF_INVLD_END = -2169, /**< $End for wrong conf object (probably nesting error) */
    RS_RET_CONF_INVLD_SCOPE = -2170,
    /*< config statement not valid in current scope (e.g. global stmt in action block) */
    RS_RET_CONF_END_NO_ACT = -2171, /**< end of action block, but no actual action specified */
    RS_RET_NO_LSTN_DEFINED = -2172, /**< no listener defined (e.g. inside an input module) */
    RS_RET_EPOLL_CR_FAILED = -2173, /**< epoll_create() failed */
    RS_RET_EPOLL_CTL_FAILED = -2174, /**< epoll_ctl() failed */
    RS_RET_INTERNAL_ERROR = -2175, /**< rsyslogd internal error, unexpected code path reached */
    RS_RET_ERR_CRE_AFUX = -2176, /**< error creating AF_UNIX socket (and binding it) */
    RS_RET_RATE_LIMITED = -2177, /**< some messages discarded due to exceeding a rate limit */
    RS_RET_ERR_HDFS_WRITE = -2178, /**< error writing to HDFS */
    RS_RET_ERR_HDFS_OPEN = -2179, /**< error during hdfsOpen (e.g. file does not exist) */
    RS_RET_FILE_NOT_SPECIFIED = -2180, /**< file name not configured where this was required */
    RS_RET_ERR_WRKDIR = -2181, /**< problems with the rsyslog working directory */
    RS_RET_WRN_WRKDIR = -2182, /**< correctable problems with the rsyslog working directory */
    RS_RET_ERR_QUEUE_EMERGENCY = -2183, /**<  some fatal error caused queue to switch to emergency mode */
    RS_RET_OUTDATED_STMT = -2184, /**<  some outdated statement/functionality is being used in conf file */
    RS_RET_MISSING_WHITESPACE = -2185, /**<  whitespace is missing in some config construct */
    RS_RET_OK_WARN = -2186, /**<  config part: everything was OK, but a warning message was emitted */

    RS_RET_INVLD_CONF_OBJ = -2200, /**< invalid config object (e.g. $Begin conf statement) */
    /* UNUSED, WAS; RS_RET_ERR_LIBEE_INIT = -2201,	< cannot obtain libee ctx */
    RS_RET_ERR_LIBLOGNORM_INIT = -2202, /**< cannot obtain liblognorm ctx */
    RS_RET_ERR_LIBLOGNORM_SAMPDB_LOAD = -2203, /**< liblognorm sampledb load failed */
    RS_RET_CMD_GONE_AWAY = -2204, /**< config directive existed, but no longer supported */
    RS_RET_ERR_SCHED_PARAMS = -2205, /**< there is a problem with configured thread scheduling params */
    RS_RET_SOCKNAME_MISSING = -2206, /**< no socket name configured where one is required */
    RS_RET_CONF_PARSE_ERROR = -2207, /**< (fatal) error parsing config file */
    RS_RET_CONF_RQRD_PARAM_MISSING = -2208, /**< required parameter in config object is missing */
    RS_RET_MOD_UNKNOWN = -2209, /**< module (config name) is unknown */
    RS_RET_CONFOBJ_UNSUPPORTED = -2210, /**< config objects (v6 conf) are not supported here */
    RS_RET_MISSING_CNFPARAMS = -2211, /**< missing configuration parameters */
    RS_RET_NO_LISTNERS = -2212, /**< module loaded, but no listeners are defined */
    RS_RET_INVLD_PROTOCOL = -2213, /**< invalid protocol specified in config file */
    RS_RET_CNF_INVLD_FRAMING = -2214, /**< invalid framing specified in config file */
    RS_RET_LEGA_ACT_NOT_SUPPORTED = -2215, /**< the module (no longer) supports legacy action syntax */
    RS_RET_MAX_OMSR_REACHED = -2216, /**< max nbr of string requests reached, not supported by core */
    RS_RET_UID_MISSING = -2217, /**< a user id is missing (but e.g. a password provided) */
    RS_RET_DATAFAIL = -2218, /**< data passed to action caused failure */
    /* reserved for pre-v6.5 */
    RS_RET_DUP_PARAM = -2220, /**< config parameter is given more than once */
    RS_RET_MODULE_ALREADY_IN_CONF = -2221, /**< module already in current configuration */
    RS_RET_PARAM_NOT_PERMITTED = -2222, /**< legacy parameter no longer permitted (usally already set by v2) */
    RS_RET_NO_JSON_PASSING = -2223, /**< rsyslog core does not support JSON-passing plugin API */
    RS_RET_MOD_NO_INPUT_STMT = -2224, /**< (input) module does not support input() statement */
    RS_RET_NO_CEE_MSG = -2225, /**< the message being processed is NOT CEE-enhanced */

    /**** up to 2290 is reserved for v6 use ****/
    RS_RET_RELP_ERR = -2291, /**<< error in RELP processing */
    /**** up to 3000 is reserved for c7 use ****/
    RS_RET_JNAME_NO_ROOT = -2301, /**< root element is missing in JSON path */
    RS_RET_JNAME_INVALID = -2302, /**< JSON path is invalid */
    RS_RET_JSON_PARSE_ERR = -2303, /**< we had a problem parsing JSON (or extra data) */
    RS_RET_BSD_BLOCKS_UNSUPPORTED = -2304, /**< BSD-style config blocks are no longer supported */
    RS_RET_JNAME_NOTFOUND = -2305, /**< JSON name not found (does not exist) */
    RS_RET_INVLD_SETOP = -2305, /**< invalid variable set operation, incompatible type */
    RS_RET_RULESET_EXISTS = -2306, /**< ruleset already exists */
    RS_RET_DEPRECATED = -2307, /**< deprecated functionality is used */
    RS_RET_DS_PROP_SEQ_ERR = -2308, /**< property sequence error deserializing object */
    RS_RET_INVLD_PROP = -2309, /**< property name error (unknown name) */
    RS_RET_NO_RULEBASE = -2310, /**< mmnormalize: rulebase can not be found or otherwise invalid */
    RS_RET_INVLD_MODE = -2311, /**< invalid mode specified in configuration */
    RS_RET_INVLD_ANON_BITS = -2312, /**< mmanon: invalid number of bits to anonymize specified */
    RS_RET_REPLCHAR_IGNORED = -2313, /**< mmanon: replacementChar parameter is ignored */
    RS_RET_SIGPROV_ERR = -2320, /**< error in signature provider */
    RS_RET_CRYPROV_ERR = -2321, /**< error in cryptography encryption provider */
    RS_RET_EI_OPN_ERR = -2322, /**< error opening an .encinfo file */
    RS_RET_EI_NO_EXISTS = -2323, /**< .encinfo file does not exist (status, not necessarily error!)*/
    RS_RET_EI_WR_ERR = -2324, /**< error writing an .encinfo file */
    RS_RET_EI_INVLD_FILE = -2325, /**< header indicates the file is no .encinfo file */
    RS_RET_CRY_INVLD_ALGO = -2326, /**< user specified invalid (unkonwn) crypto algorithm */
    RS_RET_CRY_INVLD_MODE = -2327, /**< user specified invalid (unkonwn) crypto mode */
    RS_RET_QUEUE_DISK_NO_FN = -2328, /**< disk queue configured, but filename not set */
    RS_RET_CA_CERT_MISSING = -2329, /**< a CA cert is missing where one is required (e.g. TLS) */
    RS_RET_CERT_MISSING = -2330, /**< a cert is missing where one is required (e.g. TLS) */
    RS_RET_CERTKEY_MISSING = -2331, /**< a cert (private) key is missing where one is required (e.g. TLS) */
    RS_RET_CRL_MISSING = -2332, /**< a CRL file is missing but not required (e.g. TLS) */
    RS_RET_CRL_INVALID = -2333, /**< a CRL file PEM file failed validation */
    RS_RET_CERT_REVOKED = -2334, /**< a certificate has been revoked */
    RS_RET_STRUC_DATA_INVLD = -2349, /**< structured data is malformed */

    /* up to 2350 reserved for 7.4 */
    RS_RET_QUEUE_CRY_DISK_ONLY = -2351, /**< crypto provider only supported for disk-associated queues */
    RS_RET_NO_DATA = -2352, /**< file has no data; more a state than a real error */
    RS_RET_RELP_AUTH_FAIL = -2353, /**< RELP peer authentication failed */
    RS_RET_ERR_UDPSEND = -2354, /**< sending msg via UDP failed */
    RS_RET_LAST_ERRREPORT = -2355, /**< module does not emit more error messages as limit is reached */
    RS_RET_READ_ERR = -2356, /**< read error occurred (file i/o) */
    RS_RET_CONF_PARSE_WARNING = -2357, /**< warning parsing config file */
    RS_RET_CONF_WRN_FULLDLY_BELOW_HIGHWTR = -2358, /**< warning queue full delay mark below high wtr mark */
    RS_RET_RESUMED = -2359, /**< status: action was resumed (used for reporting) */
    RS_RET_RELP_NO_TLS = -2360, /**< librel does not support TLS (but TLS requested) */
    RS_RET_STATEFILE_WRONG_FNAME = -2361, /**< state file is for wrong file */
    RS_RET_NAME_INVALID = -2362, /**< invalid name (in RainerScript) */

    /* up to 2400 reserved for 7.5 & 7.6 */
    RS_RET_INVLD_OMOD = -2400, /**< invalid output module, does not provide proper interfaces */
    RS_RET_INVLD_INTERFACE_INPUT = -2401, /**< invalid value for "interface.input" parameter (ext progs) */
    RS_RET_PARSER_NAME_EXISTS = -2402, /**< parser name already exists */
    RS_RET_MOD_NO_PARSER_STMT = -2403, /**< (parser) module does not support parser() statement */

    /* up to 2419 reserved for 8.4.x */
    RS_RET_IMFILE_WILDCARD = -2420, /**< imfile file name contains wildcard, which may be problematic */
    RS_RET_RELP_NO_TLS_AUTH = -2421, /**< librel does not support TLS authentication (but was requested) */
    RS_RET_KAFKA_ERROR = -2422, /**< error reported by Apache Kafka subsystem. See message for details. */
    RS_RET_KAFKA_NO_VALID_BROKERS = -2423, /**< no valid Kafka brokers configured/available */
    RS_RET_KAFKA_PRODUCE_ERR = -2424, /**< error during Kafka produce function */
    RS_RET_CONF_PARAM_INVLD = -2425, /**< config parameter is invalid */
    RS_RET_KSI_ERR = -2426, /**< error in KSI subsystem */
    RS_RET_ERR_LIBLOGNORM = -2427, /**< cannot obtain liblognorm ctx */
    RS_RET_CONC_CTRL_ERR = -2428, /**< error in lock/unlock/condition/concurrent-modification operation */
    RS_RET_SENDER_GONE_AWAY = -2429, /**< warning: sender not seen for configured amount of time */
    RS_RET_SENDER_APPEARED = -2430, /**< info: new sender appeared */
    RS_RET_FILE_ALREADY_IN_TABLE = -2431, /**< in imfile: table already contains to be added file */
    RS_RET_ERR_DROP_PRIV = -2432, /**< error droping privileges */
    RS_RET_FILE_OPEN_ERROR = -2433, /**< error other than "not found" occurred during open() */
    RS_RET_RENAME_TMP_QI_ERROR = -2435, /**< renaming temporary .qi file failed */
    RS_RET_ERR_SETENV = -2436, /**< error setting an environment variable */
    RS_RET_DIR_CHOWN_ERROR = -2437, /**< error during chown() */
    RS_RET_JSON_UNUSABLE = -2438, /**< JSON object is NULL or otherwise unusable */
    RS_RET_OPERATION_STATUS = -2439, /**< operational status (info) message, no error */
    RS_RET_UDP_MSGSIZE_TOO_LARGE = -2440, /**< a message is too large to be sent via UDP */
    RS_RET_NON_JSON_PROP = -2441, /**< a non-json property id is provided where a json one is requried */
    RS_RET_NO_TZ_SET = -2442, /**< system env var TZ is not set (status msg) */
    RS_RET_FS_ERR = -2443, /**< file-system error */
    RS_RET_POLL_ERR = -2444, /**< error in poll() system call */
    RS_RET_OVERSIZE_MSG = -2445, /**< message is too long (above configured max) */
    RS_RET_TLS_KEY_ERR = -2446, /**< TLS KEY has problems */
    RS_RET_RABBITMQ_CONN_ERR = -2447, /**< RabbitMQ Connection error */
    RS_RET_RABBITMQ_LOGIN_ERR = -2448, /**< RabbitMQ Login error */
    RS_RET_RABBITMQ_CHANNEL_ERR = -2449, /**< RabbitMQ Connection error */
    RS_RET_NO_WRKDIR_SET = -2450, /**< working directory not set, but desired by functionality */
    RS_RET_ERR_QUEUE_FN_DUP = -2451, /**< duplicate queue file name */
    RS_RET_REDIS_ERROR = -2452, /**< redis-specific error. See message foe details. */
    RS_RET_REDIS_AUTH_FAILED = -2453, /**< redis authentication failure */
    RS_RET_FAUP_INIT_OPTIONS_FAILED = -2454, /**< could not initialize faup options */
    RS_RET_LIBCAPNG_ERR = -2455, /**< error during dropping the capabilities */
    RS_RET_NET_CONN_ABORTED = -2456, /**< error during dropping the capabilities */
    RS_RET_PROGRAM_ERROR = -2457, /**< rsyslogd internal error, like tried NULL-ptr access */
    RS_RET_DEBUG = -2458, /**< status messages primarily meant for debugging, no error */
    RS_RET_TLS_BASEINIT_FAIL = -2459, /**< Basic TLS initialization step failed */
    RS_RET_TLS_ERR_SYSCALL = -2460, /**< TLS lib had problem with syscall */
    RS_RET_WARN_NO_SENDER_STATS = -2461, /**< TLS lib had problem with syscall */
    RS_RET_UNSUPP_SOCK_AF = -2462, /**< unsupported socket address family, use if code cannot process
                      address family or does not expect it (may be handled locally) */
    RS_RET_SYSTEMD_VERSION_ERR = -2463, /**< systemd version doesn't support journal namespacing */
    RS_RET_NO_TEMPLATE_SUPPORT_ERR = -2464, /**< journald namespace doesn't support template yet */
    RS_RET_SERVER_NO_TLS = -2465, /**< server received TLS handshake but is not configured for TLS */

    /* RainerScript error messages (range 1000.. 1999) */
    RS_RET_SYSVAR_NOT_FOUND = 1001, /**< system variable could not be found (maybe misspelled) */
    RS_RET_FIELD_NOT_FOUND = 1002, /**< field() function did not find requested field */

    /* some generic error/status codes */
    RS_RET_OK = 0, /**< operation successful */
    RS_RET_OK_DELETE_LISTENTRY = 1,
    /*< operation successful, but callee requested the deletion of an entry (special state) */
    RS_RET_TERMINATE_NOW = 2, /**< operation successful, function is requested to terminate
                  (mostly used with threads) */
    RS_RET_NO_RUN = 3, /**< operation successful, but function does not like to be executed */
    RS_RET_IDLE = 4, /**< operation successful, but callee is idle (e.g. because queue is empty) */
    RS_RET_TERMINATE_WHEN_IDLE = 5 /**< operation successful, function is requested to terminate when idle */
};

/* some helpful macros to work with srRetVals.
 * Be sure to call the to-be-returned variable always "iRet" and
 * the function finalizer always "finalize_it".
 */
#ifdef HAVE_BUILTIN_EXCEPT
    #define CHKiRet(code) \
        if (__builtin_expect(((iRet = code) != RS_RET_OK), 0)) goto finalize_it
    #define likely(x) __builtin_expect(!!(x), 1)
    #define unlikely(x) __builtin_expect(!!(x), 0)
#else
    #define CHKiRet(code) \
        if ((iRet = code) != RS_RET_OK) goto finalize_it
    #define likely(x) (x)
    #define unlikely(x) (x)
#endif

#define CHKiConcCtrl(code)               \
    {                                    \
        int tmp_CC;                      \
        if ((tmp_CC = code) != 0) {      \
            iRet = RS_RET_CONC_CTRL_ERR; \
            errno = tmp_CC;              \
            goto finalize_it;            \
        }                                \
    }

/* macro below is to be used if we need our own handling, eg for cleanup */
#define CHKiRet_Hdlr(code) if ((iRet = code) != RS_RET_OK)
/* macro below is to handle failing malloc/calloc/strdup... which we almost always handle in the same way... */
#define CHKmalloc(operation) \
    if ((operation) == NULL) ABORT_FINALIZE(RS_RET_OUT_OF_MEMORY)
/* macro below is used in conjunction with CHKiRet_Hdlr, else use ABORT_FINALIZE */
#define FINALIZE goto finalize_it;
#define DEFiRet rsRetVal iRet = RS_RET_OK
#define RETiRet return iRet

#define RS_CONCAT_(a, b) a##b
#define RS_CONCAT(a, b) RS_CONCAT_(a, b)

/**
 * @brief Compile-time assertion with a pre-C11 fallback.
 *
 * Uses C11 `_Static_assert` when available and otherwise falls back
 * to a typedef-size check.
 */
#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 201112L)
    #define RS_STATIC_ASSERT(condition, message) _Static_assert((condition), message)
#else
    #define RS_STATIC_ASSERT(condition, message) \
        typedef char RS_CONCAT(rs_static_assertion_line_, __LINE__)[(condition) ? 1 : -1] ATTR_UNUSED
#endif

/**
 * @brief Copy a string literal into a fixed-size destination buffer.
 *
 * The macro enforces at compile time that `dst` is large enough for
 * `lit` (including the trailing NUL) and then performs a `memcpy`.
 *
 * @note Intended for true fixed-size arrays, not pointer destinations.
 */
#define RS_COPY_LITERAL(dst, lit)                                                     \
    do {                                                                              \
        RS_STATIC_ASSERT(sizeof(dst) >= sizeof(lit), "destination buffer too small"); \
        memcpy((dst), (lit), sizeof(lit));                                            \
    } while (0)

#define ABORT_FINALIZE(errCode) \
    do {                        \
        iRet = errCode;         \
        goto finalize_it;       \
    } while (0)

/**
 * @enum rsObjectID
 * @brief Internal object identifiers used for sanity checks.
 *
 * Each object carries one of these IDs to verify that pointers refer
 * to the expected type.
 */
enum rsObjectID {
    OIDrsFreed = -1, /**< assigned, when an object is freed. If this
                      *   is seen during a method call, this is an
                      *   invalid object pointer!
                      */
    OIDrsInvalid = 0, /**< value created by calloc(), so do not use ;) */
    /* The 0x3412 is a debug aid. It helps us find object IDs in memory
     * dumps (on X86, this is 1234 in the dump ;)
     * If you are on an embedded device and you would like to save space
     * make them 1 byte only.
     */
    OIDrsCStr = 0x34120001,
    OIDrsPars = 0x34120002
};
typedef enum rsObjectID rsObjID;

/* support to set object types */
#ifdef NDEBUG
    #define rsSETOBJTYPE(pObj, type)
    #define rsCHECKVALIDOBJECT(x, type)
#else
    #define rsSETOBJTYPE(pObj, type) pObj->OID = type;
    #define rsCHECKVALIDOBJECT(x, type) \
        {                               \
            assert(x != NULL);          \
            assert(x->OID == type);     \
        }
#endif

/**
 * This macro should be used to free objects.
 * It aids in interpreting dumps during debugging.
 */
#ifdef NDEBUG
    #define RSFREEOBJ(x) free(x)
#else
    #define RSFREEOBJ(x)           \
        {                          \
            (x)->OID = OIDrsFreed; \
            free(x);               \
        }
#endif

/** Default thread attributes used for internal worker threads. */
extern pthread_attr_t default_thread_attr;
#ifdef HAVE_PTHREAD_SETSCHEDPARAM
/** Scheduling parameters for worker threads. */
extern struct sched_param default_sched_param;
extern int default_thr_sched_policy;
#endif
/**
 * @struct actWrkrIParams
 * @brief Immutable parameters passed to output workers.
 *
 * Each output plugin may request multiple templates. The overall table
 * therefore holds one entry per template per message. Modifying this
 * structure requires adjusting all output modules.
 */
struct actWrkrIParams {
    uchar *param;
    uint32_t lenBuf; /* length of string buffer (if string ptr) */
    uint32_t lenStr; /* length of current string (if string ptr) */
};

/* macro to access actWrkrIParams base object:
 * param is ptr to base address
 * nActTpls is the number of templates the action has requested
 * iMsg is the message index
 * iTpl is the template index
 * This macro can be used for read and write access.
 */
#define actParam(param, nActTpls, iMsg, iTpl) (param[(iMsg * nActTpls) + iTpl])

/* for the time being, we do our own portability handling here. It
 * looks like autotools either does not yet support checks for it, or
 * I wasn't smart enough to find them ;) rgerhards, 2007-07-18
 */
#ifndef __GNUC__
    #define __attribute__(x) /*NOTHING*/
#endif

/* some constants */
#define MUTEX_ALREADY_LOCKED 0
#define LOCK_MUTEX 1


#include "debug.h"
#include "obj.h"

/* the variable below is a trick: before we can init the runtime, the caller
 * may want to set a module load path. We can not do this via the glbl class
 * because it needs an initialized runtime system (and may at some point in time
 * even be loaded itself). So this is a no-go. What we do is use a single global
 * variable which may be provided with a pointer by the caller. This variable
 * resides in rsyslog.c, the main runtime file. We have not seen any realy valule
 * in providing object access functions. If you don't like that, feel free to
 * add them. -- rgerhards, 2008-04-17
 */
/** Path where modules are searched when loading dynamically. */
extern uchar *glblModPath;
/** Optional callback used for runtime error logging. */
extern void (*glblErrLogger)(const int, const int, const uchar *);

/* some runtime prototypes */
/** Process messages from iminternal. */
void processImInternal(void);
/** Initialize the runtime environment. */
rsRetVal rsrtInit(const char **ppErrObj, obj_if_t *pObjIF);
/** Shut down the runtime environment. */
rsRetVal rsrtExit(void);
/** Check if the runtime system has been initialized. */
int rsrtIsInit(void);
/** Specify an alternative error logger. */
void rsrtSetErrLogger(void (*errLogger)(const int, const int, const uchar *));
/** Default error logger used by the runtime. */
void dfltErrLogger(const int, const int, const uchar *errMsg);
/** Determine the local host name and store it in the configuration. */
rsRetVal queryLocalHostname(rsconf_t *const);


/* this define below is intended to be used to implement empty
 * structs on platforms where at least on struct member is.
 * absolutely necessary. We need to do this, as our runtime
 * expects several definitions to be present, even if in
 * rare cases the code in question does not really need it.
 */
#ifdef OS_SOLARIS
    #define EMPTY_STRUCT int remove_me_when_first_real_member_is_added;
#else
    #define EMPTY_STRUCT
#endif

/** Global pointer to the active configuration object. */
extern rsconf_t *ourConf; /* defined by syslogd.c */


/** add compatibility layer for old platforms that miss essential functions */
#ifndef HAVE_STRNDUP
char *strndup(const char *s, size_t n);
#endif
#if !defined(O_CLOEXEC) && !defined(_AIX)
    /* of course, this limits the functionality... */
    #define O_CLOEXEC 0
#endif


#endif /* multi-include protection */
