482fbe6400
MXS-1070 Now both qc_mysqlembedded and qc_sqlite return the same stuff for the same statement, and both include also operators in addition to pure functions. Whether that is the right approach, is still subject to debate. However, if we want to make it possible to disable e.g. the use of concat as in "select concat(a) from t", where a is a string, to prevent the bypassing of the masking filter, then conceptually it should be possible to prevent "select a+0 from t", where a is an int, as well.
410 lines
7.2 KiB
C
410 lines
7.2 KiB
C
/*
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* @licence@
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*/
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#include "builtin_functions.h"
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#include <stdlib.h>
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#include <string.h>
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#include <maxscale/debug.h>
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static struct
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{
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bool inited;
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} unit = { false };
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// The functions have been taken from:
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// https://mariadb.com/kb/en/mariadb/functions-and-operators/
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static const char* BUILTIN_FUNCTIONS[] =
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{
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/*
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* Bit Functions and Operators
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* https://mariadb.com/kb/en/mariadb/bit-functions-and-operators
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*/
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"bit_count",
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/*
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* Control Flow Functions
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* https://mariadb.com/kb/en/mariadb/control-flow-functions/
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*/
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"if",
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"ifnull",
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"nullif",
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/*
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* Date and Time Functions
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* https://mariadb.com/kb/en/mariadb/date-and-time-functions/
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*/
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"adddate",
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"addtime",
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"convert_tz",
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"curdate",
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"current_date",
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"current_time",
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"current_timestamp",
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"curtime",
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"date",
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"datediff",
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"date_add",
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"date_format",
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"date_sub",
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"day",
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"dayname",
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"dayofmonth",
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"dayofweek",
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"dayofyear",
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"extract",
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"from_days",
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"from_unixtime",
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"get_format",
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"hour",
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"last_day",
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"localtime",
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"localtimestamp",
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"makedate",
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"maketime",
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"microsecond",
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"minute",
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"month",
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"monthname",
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"now",
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"period_add",
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"period_diff",
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"quarter",
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"second",
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"sec_to_time",
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"str_to_date",
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"subdate",
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"subtime",
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"sysdate",
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"time",
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"timediff"
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"timestamp",
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"timestampadd",
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"timestampdiff",
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"time_format",
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"time_to_sec",
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"to_days",
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"to_seconds",
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"unix_timestamp",
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"utc_date",
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"utc_time",
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"week",
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"weekday",
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"weekofyear",
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"year",
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"yearweek",
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/*
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* Columns Functions
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* https://mariadb.com/kb/en/mariadb/dynamic-columns-functions/
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*/
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"column_check",
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"column_exists",
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"column_get",
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"column_json",
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"column_list",
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/*
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* Encryption, Hashing and Compression Functions
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* https://mariadb.com/kb/en/mariadb/encryption-hashing-and-compression-functions/
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*/
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"aes_decrypt",
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"aes_encrypt",
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"compress",
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"decode",
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"des_decrypt",
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"des_encrypt",
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"encode",
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"encrypt",
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"md5",
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"old_password",
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"password",
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"sha1",
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"sha2",
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"uncompress",
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"uncompressed_length",
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/*
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* Comparison Operators
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* https://mariadb.com/kb/en/mariadb/comparison-operators/
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*/
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"coalesce",
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"greatest",
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"interval",
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"isnull",
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"least",
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/*
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* Functions and Modifiers for use with GROUP BY
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* https://mariadb.com/kb/en/mariadb/functions-and-modifiers-for-use-with-group-by/
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*/
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"avg",
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"bit_and",
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"bit_or",
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"bit_xor",
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"count",
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"group_concat",
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"max",
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"min",
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"std",
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"stddev",
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"stddev_pop",
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"stddev_samp",
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"sum",
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"variance",
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"var_pop",
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"var_samp",
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/*
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* Geographic Functions
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* https://mariadb.com/kb/en/mariadb/geographic-functions/
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*/
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// Geometry Constructors
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// https://mariadb.com/kb/en/mariadb/geometry-constructors/
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"geometrycollection",
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"linestring",
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"multilinestring",
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"multipoint",
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"point",
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"polygon",
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"st_buffer",
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"st_convexhull",
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"st_intersection",
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"st_pointonsurface",
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"st_symdifference",
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"std_union",
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// Geometry Properties
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// https://mariadb.com/kb/en/mariadb/geometry-properties/
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// TODO
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// Geometry Relations
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// TODO
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// LineString Properties
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// TODO
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// MBR
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// TODO
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// Point Propertoes
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// TODO
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// Polygon Properties
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// TODO
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// WKB
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// TODO
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// WKT
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// https://mariadb.com/kb/en/mariadb/wkt/
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"MLineFromText",
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"MPointFromText",
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"MPolyFromText",
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"ST_AsText",
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"ST_ASWKT",
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"ST_GeomCollFromText",
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"ST_GeometryFromText",
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"ST_LineFromText",
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"ST_PointFromText",
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"ST_PolyFromText",
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// Deprecated
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"geomfromtext",
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/*
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* Information Functions
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* https://mariadb.com/kb/en/mariadb/information-functions/
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*/
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"benchmark",
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"binlog_gtid_pos",
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"charset",
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"coercibility",
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"collation",
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"connection_id",
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"current_role",
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"current_user",
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"database",
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"decode_histogram",
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"found_rows",
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"last_insert_id",
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"row_count",
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"schema",
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"session_user",
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"system_user",
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"user",
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"version",
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/*
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* Miscellanesous Functions
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* https://mariadb.com/kb/en/mariadb/miscellaneous-functions/
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*/
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"default",
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"get_lock",
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"inet6_aton",
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"inet6_ntoa",
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"inet_aton",
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"inet_ntoa",
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"is_free_lock",
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"is_ipv4",
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"is_ipv4_compat",
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"is_ipv4_mapped",
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"is_ipv6",
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"is_used_lock",
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"last_value",
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"master_gtid_wait",
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"master_pos_wait",
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"name_const",
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"release_lock",
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"sleep",
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"uuid",
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"uuid_short",
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"values",
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/*
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* Numeric Functions
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* https://mariadb.com/kb/en/mariadb/numeric-functions/
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*/
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"abs",
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"acos",
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"asin",
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"atan",
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"atan2",
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"ceil",
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"ceiling",
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"conv",
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"cos",
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"cot",
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"crc32",
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"degrees",
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"div",
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"exp",
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"floor",
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"greatest",
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"least",
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"ln",
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"log",
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"log10",
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"log2",
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"mod",
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"oct",
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"pi",
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"pow",
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"power",
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"radians",
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"rand",
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"round",
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"sign",
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"sin",
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"sqrt",
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"tan",
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"truncate",
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/*
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* String Functions
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* https://mariadb.com/kb/en/mariadb/string-functions/
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*/
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"ascii",
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"bin",
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"bit_length",
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"cast",
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"char",
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"character_length",
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"char_length",
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"concat",
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"concat_ws",
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"convert",
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"elt",
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"export_set",
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"extractvalue",
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"field",
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"find_in_set",
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"format",
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"hex",
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"insert",
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"instr",
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"lcase",
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"left",
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"length",
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"like",
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"load_file",
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"locate",
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"lower",
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"lpad",
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"ltrim",
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"make_set",
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"mid",
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"octet_length",
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"ord",
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"position",
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"quote",
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"repeat",
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"replace",
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"reverse",
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"right",
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"rpad",
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"rtrim",
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"soundex",
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"space",
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"strcmp",
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"substr",
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"substring",
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"substring_index",
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"trim",
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"ucase",
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"unhex",
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"updatexml",
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"upper",
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"from_base64",
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"to_base64",
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"weight_string",
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/*
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* http://dev.mysql.com/doc/refman/5.7/en/row-subqueries.html
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*/
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"row"
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};
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const size_t N_BUILTIN_FUNCTIONS = sizeof(BUILTIN_FUNCTIONS) / sizeof(BUILTIN_FUNCTIONS[0]);
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// NOTE: sort_compare and search_compare are not identical, so don't
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// NOTE: optimize either of them away.
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static int sort_compare(const void* key, const void* value)
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{
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return strcasecmp(*(const char**) key, *(const char**) value);
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}
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static int search_compare(const void* key, const void* value)
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{
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return strcasecmp((const char*) key, *(const char**) value);
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}
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//
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// API
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//
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void init_builtin_functions()
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{
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ss_dassert(!unit.inited);
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qsort(BUILTIN_FUNCTIONS, N_BUILTIN_FUNCTIONS, sizeof(char*), sort_compare);
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unit.inited = true;
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}
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void finish_builtin_functions()
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{
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ss_dassert(unit.inited);
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unit.inited = false;
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}
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bool is_builtin_readonly_function(const char* key)
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{
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ss_dassert(unit.inited);
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char* value = bsearch(key, BUILTIN_FUNCTIONS, N_BUILTIN_FUNCTIONS, sizeof(char*), search_compare);
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return value ? true : false;
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}
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