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Make query depth limits configurable (#4787)

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Mees Delzenne 2024-09-17 12:12:10 +02:00 committed by GitHub
parent 682523db6d
commit e5e4783e3f
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GPG key ID: B5690EEEBB952194
2 changed files with 40 additions and 11 deletions
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14
core/src/cnf/mod.rs
View file

@ -21,6 +21,14 @@ pub static MAX_CONCURRENT_TASKS: LazyLock<usize> =
pub static MAX_COMPUTATION_DEPTH: LazyLock<u32> =
lazy_env_parse!("SURREAL_MAX_COMPUTATION_DEPTH", u32, 120);
/// Specifies how deep the parser will parse nested objects and arrays in a query.
pub static MAX_OBJECT_PARSING_DEPTH: LazyLock<u32> =
lazy_env_parse!("SURREAL_MAX_OBJECT_PARSING_DEPTH", u32, 100);
/// Specifies how deep the parser will parse recursive queries (queries within queries).
pub static MAX_QUERY_PARSING_DEPTH: LazyLock<u32> =
lazy_env_parse!("SURREAL_MAX_QUERY_PARSING_DEPTH", u32, 20);
/// Specifies the number of items which can be cached within a single transaction.
pub static TRANSACTION_CACHE_SIZE: LazyLock<usize> =
lazy_env_parse!("SURREAL_TRANSACTION_CACHE_SIZE", usize, 10_000);
@ -61,8 +69,10 @@ pub static EXTERNAL_SORTING_BUFFER_LIMIT: LazyLock<usize> =
pub static GRAPHQL_ENABLE: LazyLock<bool> =
lazy_env_parse!("SURREAL_EXPERIMENTAL_GRAPHQL", bool, false);
/// Enable experimental bearer access and stateful access grant management. Still under active development.
/// Using this experimental feature may introduce risks related to breaking changes and security issues.
/// Enable experimental bearer access and stateful access grant management.
///
/// Still under active development. Using this experimental feature may introduce risks related
/// to breaking changes and security issues.
#[cfg(not(test))]
pub static EXPERIMENTAL_BEARER_ACCESS: LazyLock<bool> =
lazy_env_parse!("SURREAL_EXPERIMENTAL_BEARER_ACCESS", bool, false);

37
core/src/syn/mod.rs
View file

@ -1,6 +1,7 @@
//! Module containing the implementation of the surrealql tokens, lexer, and parser.
use crate::{
cnf::{MAX_OBJECT_PARSING_DEPTH, MAX_QUERY_PARSING_DEPTH},
err::Error,
sql::{Block, Datetime, Duration, Idiom, Query, Range, Subquery, Thing, Value},
};
@ -43,7 +44,9 @@ pub fn could_be_reserved_keyword(s: &str) -> bool {
#[instrument(level = "trace", target = "surrealdb::core::syn", fields(length = input.len()))]
pub fn parse(input: &str) -> Result<Query, Error> {
trace!(target: TARGET, "Parsing SurrealQL query");
let mut parser = Parser::new(input.as_bytes());
let mut parser = Parser::new(input.as_bytes())
.with_object_recursion_limit(*MAX_OBJECT_PARSING_DEPTH as usize)
.with_query_recursion_limit(*MAX_QUERY_PARSING_DEPTH as usize);
let mut stack = Stack::new();
stack
.enter(|stk| parser.parse_query(stk))
@ -56,7 +59,9 @@ pub fn parse(input: &str) -> Result<Query, Error> {
#[instrument(level = "trace", target = "surrealdb::core::syn", fields(length = input.len()))]
pub fn value(input: &str) -> Result<Value, Error> {
trace!(target: TARGET, "Parsing SurrealQL value");
let mut parser = Parser::new(input.as_bytes());
let mut parser = Parser::new(input.as_bytes())
.with_object_recursion_limit(*MAX_OBJECT_PARSING_DEPTH as usize)
.with_query_recursion_limit(*MAX_QUERY_PARSING_DEPTH as usize);
let mut stack = Stack::new();
stack
.enter(|stk| parser.parse_value_table(stk))
@ -70,7 +75,9 @@ pub fn value(input: &str) -> Result<Value, Error> {
#[instrument(level = "trace", target = "surrealdb::core::syn", fields(length = input.len()))]
pub fn json(input: &str) -> Result<Value, Error> {
trace!(target: TARGET, "Parsing inert JSON value");
let mut parser = Parser::new(input.as_bytes());
let mut parser = Parser::new(input.as_bytes())
.with_object_recursion_limit(*MAX_OBJECT_PARSING_DEPTH as usize)
.with_query_recursion_limit(*MAX_QUERY_PARSING_DEPTH as usize);
let mut stack = Stack::new();
stack
.enter(|stk| parser.parse_json(stk))
@ -84,7 +91,9 @@ pub fn json(input: &str) -> Result<Value, Error> {
#[instrument(level = "trace", target = "surrealdb::core::syn", fields(length = input.len()))]
pub fn subquery(input: &str) -> Result<Subquery, Error> {
trace!(target: TARGET, "Parsing SurrealQL subquery");
let mut parser = Parser::new(input.as_bytes());
let mut parser = Parser::new(input.as_bytes())
.with_object_recursion_limit(*MAX_OBJECT_PARSING_DEPTH as usize)
.with_query_recursion_limit(*MAX_QUERY_PARSING_DEPTH as usize);
let mut stack = Stack::new();
stack
.enter(|stk| parser.parse_full_subquery(stk))
@ -98,7 +107,9 @@ pub fn subquery(input: &str) -> Result<Subquery, Error> {
#[instrument(level = "trace", target = "surrealdb::core::syn", fields(length = input.len()))]
pub fn idiom(input: &str) -> Result<Idiom, Error> {
trace!(target: TARGET, "Parsing SurrealQL idiom");
let mut parser = Parser::new(input.as_bytes());
let mut parser = Parser::new(input.as_bytes())
.with_object_recursion_limit(*MAX_OBJECT_PARSING_DEPTH as usize)
.with_query_recursion_limit(*MAX_QUERY_PARSING_DEPTH as usize);
parser.table_as_field = true;
let mut stack = Stack::new();
stack
@ -151,7 +162,9 @@ pub fn range(input: &str) -> Result<Range, Error> {
#[instrument(level = "trace", target = "surrealdb::core::syn", fields(length = input.len()))]
pub fn thing(input: &str) -> Result<Thing, Error> {
trace!(target: TARGET, "Parsing SurrealQL thing");
let mut parser = Parser::new(input.as_bytes());
let mut parser = Parser::new(input.as_bytes())
.with_object_recursion_limit(*MAX_OBJECT_PARSING_DEPTH as usize)
.with_query_recursion_limit(*MAX_QUERY_PARSING_DEPTH as usize);
let mut stack = Stack::new();
stack
.enter(|stk| parser.parse_thing(stk))
@ -165,7 +178,9 @@ pub fn thing(input: &str) -> Result<Thing, Error> {
#[instrument(level = "trace", target = "surrealdb::core::syn", fields(length = input.len()))]
pub fn block(input: &str) -> Result<Block, Error> {
trace!(target: TARGET, "Parsing SurrealQL block");
let mut parser = Parser::new(input.as_bytes());
let mut parser = Parser::new(input.as_bytes())
.with_object_recursion_limit(*MAX_OBJECT_PARSING_DEPTH as usize)
.with_query_recursion_limit(*MAX_QUERY_PARSING_DEPTH as usize);
let mut stack = Stack::new();
let token = parser.peek();
match token.kind {
@ -190,7 +205,9 @@ pub fn block(input: &str) -> Result<Block, Error> {
#[instrument(level = "trace", target = "surrealdb::core::syn", fields(length = input.len()))]
pub fn value_legacy_strand(input: &str) -> Result<Value, Error> {
trace!(target: TARGET, "Parsing SurrealQL value, with legacy strings");
let mut parser = Parser::new(input.as_bytes());
let mut parser = Parser::new(input.as_bytes())
.with_object_recursion_limit(*MAX_OBJECT_PARSING_DEPTH as usize)
.with_query_recursion_limit(*MAX_QUERY_PARSING_DEPTH as usize);
let mut stack = Stack::new();
parser.allow_legacy_strand(true);
stack
@ -205,7 +222,9 @@ pub fn value_legacy_strand(input: &str) -> Result<Value, Error> {
#[instrument(level = "trace", target = "surrealdb::core::syn", fields(length = input.len()))]
pub fn json_legacy_strand(input: &str) -> Result<Value, Error> {
trace!(target: TARGET, "Parsing inert JSON value, with legacy strings");
let mut parser = Parser::new(input.as_bytes());
let mut parser = Parser::new(input.as_bytes())
.with_object_recursion_limit(*MAX_OBJECT_PARSING_DEPTH as usize)
.with_query_recursion_limit(*MAX_QUERY_PARSING_DEPTH as usize);
let mut stack = Stack::new();
parser.allow_legacy_strand(true);
stack