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wip: tests, clippy
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@ -1,6 +1,7 @@
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//! Event parsing and validation
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use crate::error::Error;
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use crate::error::Result;
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use crate::event::Event;
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use bitcoin_hashes::{sha256, Hash};
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use lazy_static::lazy_static;
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use regex::Regex;
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@ -86,6 +87,14 @@ pub struct ConditionQuery {
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pub(crate) conditions: Vec<Condition>,
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}
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impl ConditionQuery {
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pub fn allows_event(&self, _event: &Event) -> bool {
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// check each condition, to ensure that the event complies with the restriction.
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false
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}
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}
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// Verify that the delegator approved the delegation; return a ConditionQuery if so.
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pub fn validate_delegation(
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delegator: &str,
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@ -125,7 +134,46 @@ pub fn validate_delegation(
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pub struct Condition {
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pub(crate) field: Field,
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pub(crate) operator: Operator,
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pub(crate) values: Vec<usize>,
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pub(crate) values: Vec<u64>,
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}
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impl Condition {
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/// Check if this condition allows the given event to be delegated
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pub fn allows_event(&self, event: &Event) -> bool {
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// determine what the right-hand side of the operator is
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let resolved_field = match &self.field {
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Field::Kind => event.kind,
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Field::CreatedAt => event.created_at,
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};
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match &self.operator {
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Operator::LessThan => {
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// the less-than operator is only valid for single values.
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if self.values.len() == 1 {
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if let Some(v) = self.values.first() {
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return resolved_field < *v;
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}
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}
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}
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Operator::GreaterThan => {
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// the greater-than operator is only valid for single values.
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if self.values.len() == 1 {
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if let Some(v) = self.values.first() {
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return resolved_field > *v;
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}
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}
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}
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Operator::Equals => {
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// equals is interpreted as "must be equal to at least one provided value"
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return self.values.iter().any(|&x| resolved_field == x);
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}
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Operator::NotEquals => {
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// not-equals is interpreted as "must not be equal to any provided value"
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// this is the one case where an empty list of values could be allowed; even though it is a pointless restriction.
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return self.values.iter().all(|&x| resolved_field != x);
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}
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}
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false
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}
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}
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fn str_to_condition(cs: &str) -> Option<Condition> {
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@ -141,7 +189,7 @@ fn str_to_condition(cs: &str) -> Option<Condition> {
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let rawvals = caps.get(3)?.as_str();
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let values = rawvals
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.split_terminator(',')
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.map(|n| n.parse::<usize>().ok())
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.map(|n| n.parse::<u64>().ok())
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.collect::<Option<Vec<_>>>()?;
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// convert field string into Field
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Some(Condition {
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@ -279,4 +327,84 @@ mod tests {
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assert_eq!(parsed, cq);
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Ok(())
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}
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fn simple_event() -> Event {
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Event {
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id: "0".to_owned(),
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pubkey: "0".to_owned(),
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created_at: 0,
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kind: 0,
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tags: vec![],
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content: "".to_owned(),
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sig: "0".to_owned(),
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tagidx: None,
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}
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}
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// Check for condition logic on event w/ empty values
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#[test]
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fn condition_with_empty_values() {
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let mut c = Condition {
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field: Field::Kind,
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operator: Operator::GreaterThan,
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values: vec![],
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};
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let e = simple_event();
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assert!(!c.allows_event(&e));
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c.operator = Operator::LessThan;
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assert!(!c.allows_event(&e));
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c.operator = Operator::Equals;
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assert!(!c.allows_event(&e));
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// Not Equals applied to an empty list *is* allowed
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// (pointless, but logically valid).
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c.operator = Operator::NotEquals;
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assert!(c.allows_event(&e));
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}
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// Check for condition logic on event w/ single value
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#[test]
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fn condition_kind_gt_event_single() {
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let c = Condition {
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field: Field::Kind,
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operator: Operator::GreaterThan,
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values: vec![10],
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};
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let mut e = simple_event();
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// kind is not greater than 10, not allowed
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e.kind = 1;
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assert!(!c.allows_event(&e));
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// kind is greater than 10, allowed
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e.kind = 100;
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assert!(c.allows_event(&e));
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// kind is 10, not allowed
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e.kind = 10;
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assert!(!c.allows_event(&e));
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}
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// Check for condition logic on event w/ multi values
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#[test]
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fn condition_with_multi_values() {
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let mut c = Condition {
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field: Field::Kind,
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operator: Operator::Equals,
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values: vec![0, 10, 20],
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};
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let mut e = simple_event();
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// Allow if event kind is in list for Equals
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e.kind = 10;
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assert!(c.allows_event(&e));
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// Deny if event kind is not in list for Equals
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e.kind = 11;
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assert!(!c.allows_event(&e));
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// Deny if event kind is in list for NotEquals
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e.kind = 10;
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c.operator = Operator::NotEquals;
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assert!(!c.allows_event(&e));
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// Allow if event kind is not in list for NotEquals
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e.kind = 99;
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c.operator = Operator::NotEquals;
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assert!(c.allows_event(&e));
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// Always deny if GreaterThan/LessThan for a list
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c.operator = Operator::LessThan;
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assert!(!c.allows_event(&e));
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c.operator = Operator::GreaterThan;
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assert!(!c.allows_event(&e));
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}
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}
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13
src/event.rs
13
src/event.rs
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@ -125,9 +125,16 @@ impl Event {
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let querystr = delegation_tag.get(1)?;
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let sig = delegation_tag.get(2)?;
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// pass into the validate_delegation
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validate_delegation(delegator, delegatee, querystr, sig);
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// try to construct a delegation object (
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todo!();
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if let Some(cond_query) = validate_delegation(delegator, delegatee, querystr, sig) {
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// check if this condition query would allow this event.
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if cond_query.allows_event(self) {
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Some(delegator.into())
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} else {
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None
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}
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} else {
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None
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}
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}
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/// Build an event tag index
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