refactor: drop hexrange

Signed-off-by: Greg Heartsfield <scsibug@imap.cc>

src/hexrange.rs

@@ -1,159 +0,0 @@
-//! Utilities for searching hexadecimal
-use crate::utils::is_hex;
-use hex;
-
-/// Types of hexadecimal queries.
-#[derive(PartialEq, Eq, PartialOrd, Ord, Debug, Clone)]
-pub enum HexSearch {
-    // when no range is needed, exact 32-byte
-    Exact(Vec<u8>),
-    // lower (inclusive) and upper range (exclusive)
-    Range(Vec<u8>, Vec<u8>),
-    // lower bound only, upper bound is MAX inclusive
-    LowerOnly(Vec<u8>),
-}
-
-/// Check if a string contains only f chars
-fn is_all_fs(s: &str) -> bool {
-    s.chars().all(|x| x == 'f' || x == 'F')
-}
-
-/// Find the next hex sequence greater than the argument.
-#[must_use]
-pub fn hex_range(s: &str) -> Option<HexSearch> {
-    let mut hash_base = s.to_owned();
-    if !is_hex(&hash_base) || hash_base.len() > 64 {
-        return None;
-    }
-    if hash_base.len() == 64 {
-        return Some(HexSearch::Exact(hex::decode(&hash_base).ok()?));
-    }
-    // if s is odd, add a zero
-    let mut odd = hash_base.len() % 2 != 0;
-    if odd {
-        // extend the string to make it even
-        hash_base.push('0');
-    }
-    let base = hex::decode(hash_base).ok()?;
-    // check for all ff's
-    if is_all_fs(s) {
-        // there is no higher bound, we only want to search for blobs greater than this.
-        return Some(HexSearch::LowerOnly(base));
-    }
-
-    // return a range
-    let mut upper = base.clone();
-    let mut byte_len = upper.len();
-
-    // for odd strings, we made them longer, but we want to increment the upper char (+16).
-    // we know we can do this without overflowing because we explicitly set the bottom half to 0's.
-    while byte_len > 0 {
-        byte_len -= 1;
-        // check if byte can be incremented, or if we need to carry.
-        let b = upper[byte_len];
-        if b == u8::MAX {
-            // reset and carry
-            upper[byte_len] = 0;
-        } else if odd {
-            // check if first char in this byte is NOT 'f'
-            if b < 240 {
-                // bump up the first character in this byte
-                upper[byte_len] = b + 16;
-                // increment done, stop iterating through the vec
-                break;
-            }
-            // if it is 'f', reset the byte to 0 and do a carry
-            // reset and carry
-            upper[byte_len] = 0;
-            // done with odd logic, so don't repeat this
-            odd = false;
-        } else {
-            // bump up the first character in this byte
-            upper[byte_len] = b + 1;
-            // increment done, stop iterating
-            break;
-        }
-    }
-    Some(HexSearch::Range(base, upper))
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-    use crate::error::Result;
-
-    #[test]
-    fn hex_range_exact() -> Result<()> {
-        let hex = "abcdef00abcdef00abcdef00abcdef00abcdef00abcdef00abcdef00abcdef00";
-        let r = hex_range(hex);
-        assert_eq!(
-            r,
-            Some(HexSearch::Exact(hex::decode(hex).expect("invalid hex")))
-        );
-        Ok(())
-    }
-    #[test]
-    fn hex_full_range() -> Result<()> {
-        let hex = "aaaa";
-        let hex_upper = "aaab";
-        let r = hex_range(hex);
-        assert_eq!(
-            r,
-            Some(HexSearch::Range(
-                hex::decode(hex).expect("invalid hex"),
-                hex::decode(hex_upper).expect("invalid hex")
-            ))
-        );
-        Ok(())
-    }
-
-    #[test]
-    fn hex_full_range_odd() -> Result<()> {
-        let r = hex_range("abc");
-        assert_eq!(
-            r,
-            Some(HexSearch::Range(
-                hex::decode("abc0").expect("invalid hex"),
-                hex::decode("abd0").expect("invalid hex")
-            ))
-        );
-        Ok(())
-    }
-
-    #[test]
-    fn hex_full_range_odd_end_f() -> Result<()> {
-        let r = hex_range("abf");
-        assert_eq!(
-            r,
-            Some(HexSearch::Range(
-                hex::decode("abf0").expect("invalid hex"),
-                hex::decode("ac00").expect("invalid hex")
-            ))
-        );
-        Ok(())
-    }
-
-    #[test]
-    fn hex_no_upper() -> Result<()> {
-        let r = hex_range("ffff");
-        assert_eq!(
-            r,
-            Some(HexSearch::LowerOnly(
-                hex::decode("ffff").expect("invalid hex")
-            ))
-        );
-        Ok(())
-    }
-
-    #[test]
-    fn hex_no_upper_odd() -> Result<()> {
-        let r = hex_range("fff");
-        assert_eq!(
-            r,
-            Some(HexSearch::LowerOnly(
-                hex::decode("fff0").expect("invalid hex")
-            ))
-        );
-        Ok(())
-    }
-}

src/lib.rs

@@ -6,7 +6,6 @@ pub mod db;
 pub mod delegation;
 pub mod error;
 pub mod event;
-pub mod hexrange;
 pub mod info;
 pub mod nauthz;
 pub mod nip05;

src/repo/postgres.rs

@@ -14,7 +14,6 @@ use sqlx::{Error, Execute, FromRow, Postgres, QueryBuilder, Row};
 use std::time::{Duration, Instant};
 
 use crate::error;
-use crate::hexrange::{hex_range, HexSearch};
 use crate::repo::postgres_migration::run_migrations;
 use crate::server::NostrMetrics;
 use crate::utils::{self, is_hex, is_lower_hex};
@@ -60,8 +59,7 @@ async fn cleanup_expired(conn: PostgresPool, frequency: Duration) -> Result<()>
                         }
                     }
                 }
-            }
+            };
-            ;
         }
     });
     Ok(())
@@ -726,6 +724,7 @@ fn query_from_filter(f: &ReqFilter) -> Option<QueryBuilder<Postgres>> {
     }
 
     let mut query = QueryBuilder::new("SELECT e.\"content\", e.created_at FROM \"event\" e WHERE ");
+
     // This tracks whether we need to push a prefix AND before adding another clause
     let mut push_and = false;
     // Query for "authors", allowing prefix matches
@@ -736,12 +735,8 @@ fn query_from_filter(f: &ReqFilter) -> Option<QueryBuilder<Postgres>> {
         if auth_vec.is_empty() {
             return None;
         }
-        query.push("(");
+        query.push("(e.pub_key in (");
 
-        // shortcut authors into "IN" query
-        let any_is_range = auth_vec.iter().any(|pk| pk.len() != 64);
-        if !any_is_range {
-            query.push("e.pub_key in (");
         let mut pk_sep = query.separated(", ");
         for pk in auth_vec.iter() {
             pk_sep.push_bind(hex::decode(pk).ok());
@@ -751,48 +746,8 @@ fn query_from_filter(f: &ReqFilter) -> Option<QueryBuilder<Postgres>> {
         for pk in auth_vec.iter() {
             pk_delegated_sep.push_bind(hex::decode(pk).ok());
         }
-            query.push(")");
         push_and = true;
-        } else {
+        query.push("))");
-            let mut range_authors = query.separated(" OR ");
-            for auth in auth_vec {
-                match hex_range(auth) {
-                    Some(HexSearch::Exact(ex)) => {
-                        range_authors
-                            .push("(e.pub_key = ")
-                            .push_bind_unseparated(ex.clone())
-                            .push_unseparated(" OR e.delegated_by = ")
-                            .push_bind_unseparated(ex)
-                            .push_unseparated(")");
-                    }
-                    Some(HexSearch::Range(lower, upper)) => {
-                        range_authors
-                            .push("((e.pub_key > ")
-                            .push_bind_unseparated(lower.clone())
-                            .push_unseparated(" AND e.pub_key < ")
-                            .push_bind_unseparated(upper.clone())
-                            .push_unseparated(") OR (e.delegated_by > ")
-                            .push_bind_unseparated(lower)
-                            .push_unseparated(" AND e.delegated_by < ")
-                            .push_bind_unseparated(upper)
-                            .push_unseparated("))");
-                    }
-                    Some(HexSearch::LowerOnly(lower)) => {
-                        range_authors
-                            .push("(e.pub_key > ")
-                            .push_bind_unseparated(lower.clone())
-                            .push_unseparated(" OR e.delegated_by > ")
-                            .push_bind_unseparated(lower)
-                            .push_unseparated(")");
-                    }
-                    None => {
-                        info!("Could not parse hex range from author {:?}", auth);
-                    }
-                }
-                push_and = true;
-            }
-        }
-        query.push(")");
     }
 
     // Query for Kind
@@ -813,7 +768,7 @@ fn query_from_filter(f: &ReqFilter) -> Option<QueryBuilder<Postgres>> {
         query.push(")");
     }
 
-    // Query for event, allowing prefix matches
+    // Query for event,
     if let Some(id_vec) = &f.ids {
         // filter out non-hex values
         let id_vec: Vec<&String> = id_vec.iter().filter(|a| is_hex(a)).collect();
@@ -827,48 +782,12 @@ fn query_from_filter(f: &ReqFilter) -> Option<QueryBuilder<Postgres>> {
         }
         push_and = true;
 
-        // shortcut ids into "IN" query
-        let any_is_range = id_vec.iter().any(|pk| pk.len() != 64);
-        if !any_is_range {
         query.push("id in (");
         let mut sep = query.separated(", ");
         for id in id_vec.iter() {
             sep.push_bind(hex::decode(id).ok());
         }
-            query.push(")");
+        query.push("))");
-        } else {
-            // take each author and convert to a hex search
-            let mut id_query = query.separated(" OR ");
-            for id in id_vec {
-                match hex_range(id) {
-                    Some(HexSearch::Exact(ex)) => {
-                        id_query
-                            .push("(id = ")
-                            .push_bind_unseparated(ex)
-                            .push_unseparated(")");
-                    }
-                    Some(HexSearch::Range(lower, upper)) => {
-                        id_query
-                            .push("(id > ")
-                            .push_bind_unseparated(lower)
-                            .push_unseparated(" AND id < ")
-                            .push_bind_unseparated(upper)
-                            .push_unseparated(")");
-                    }
-                    Some(HexSearch::LowerOnly(lower)) => {
-                        id_query
-                            .push("(id > ")
-                            .push_bind_unseparated(lower)
-                            .push_unseparated(")");
-                    }
-                    None => {
-                        info!("Could not parse hex range from id {:?}", id);
-                    }
-                }
-            }
-        }
-
-        query.push(")");
     }
 
     // Query for tags
@@ -888,7 +807,8 @@ fn query_from_filter(f: &ReqFilter) -> Option<QueryBuilder<Postgres>> {
                 if push_or {
                     query.push(" OR ");
                 }
-                query.push("(t.\"name\" = ")
+                query
+                    .push("(t.\"name\" = ")
                     .push_bind(key.to_string())
                     .push(" AND (");
 
@@ -898,8 +818,7 @@ fn query_from_filter(f: &ReqFilter) -> Option<QueryBuilder<Postgres>> {
                     query.push("value in (");
                     // plain value match first
                     let mut tag_query = query.separated(", ");
-                    for v in val.iter()
+                    for v in val.iter().filter(|v| !is_lower_hex(v)) {
-                        .filter(|v| !is_lower_hex(v)) {
                         tag_query.push_bind(v.as_bytes());
                     }
                 }
@@ -910,8 +829,7 @@ fn query_from_filter(f: &ReqFilter) -> Option<QueryBuilder<Postgres>> {
                     query.push("value_hex in (");
                     // plain value match first
                     let mut tag_query = query.separated(", ");
-                    for v in val.iter()
+                    for v in val.iter().filter(|v| v.len() % 2 == 0 && is_lower_hex(v)) {
-                        .filter(|v| v.len() % 2 == 0 && is_lower_hex(v)) {
                         tag_query.push_bind(hex::decode(v).ok());
                     }
                 }
@@ -988,11 +906,10 @@ impl FromRow<'_, PgRow> for VerificationRecord {
     }
 }
 
-
 #[cfg(test)]
 mod tests {
-    use std::collections::{HashMap, HashSet};
     use super::*;
+    use std::collections::{HashMap, HashSet};
 
     #[test]
     fn test_query_gen_tag_value_hex() {
@@ -1001,11 +918,16 @@ mod tests {
             kinds: Some(vec![1000]),
             since: None,
             until: None,
-            authors: Some(vec!["84de35e2584d2b144aae823c9ed0b0f3deda09648530b93d1a2a146d1dea9864".to_owned()]),
+            authors: Some(vec![
+                "84de35e2584d2b144aae823c9ed0b0f3deda09648530b93d1a2a146d1dea9864".to_owned(),
+            ]),
             limit: None,
-            tags: Some(HashMap::from([
+            tags: Some(HashMap::from([(
-                ('p', HashSet::from(["63fe6318dc58583cfe16810f86dd09e18bfd76aabc24a0081ce2856f330504ed".to_owned()]))
+                'p',
-            ])),
+                HashSet::from([
+                    "63fe6318dc58583cfe16810f86dd09e18bfd76aabc24a0081ce2856f330504ed".to_owned(),
+                ]),
+            )])),
             force_no_match: false,
         };
 
@@ -1020,11 +942,11 @@ mod tests {
             kinds: Some(vec![1000]),
             since: None,
             until: None,
-            authors: Some(vec!["84de35e2584d2b144aae823c9ed0b0f3deda09648530b93d1a2a146d1dea9864".to_owned()]),
+            authors: Some(vec![
+                "84de35e2584d2b144aae823c9ed0b0f3deda09648530b93d1a2a146d1dea9864".to_owned(),
+            ]),
             limit: None,
-            tags: Some(HashMap::from([
+            tags: Some(HashMap::from([('d', HashSet::from(["test".to_owned()]))])),
-                ('d', HashSet::from(["test".to_owned()]))
-            ])),
             force_no_match: false,
         };
 
@@ -1039,11 +961,17 @@ mod tests {
             kinds: Some(vec![1000]),
             since: None,
             until: None,
-            authors: Some(vec!["84de35e2584d2b144aae823c9ed0b0f3deda09648530b93d1a2a146d1dea9864".to_owned()]),
+            authors: Some(vec![
+                "84de35e2584d2b144aae823c9ed0b0f3deda09648530b93d1a2a146d1dea9864".to_owned(),
+            ]),
             limit: None,
-            tags: Some(HashMap::from([
+            tags: Some(HashMap::from([(
-                ('d', HashSet::from(["test".to_owned(), "63fe6318dc58583cfe16810f86dd09e18bfd76aabc24a0081ce2856f330504ed".to_owned()]))
+                'd',
-            ])),
+                HashSet::from([
+                    "test".to_owned(),
+                    "63fe6318dc58583cfe16810f86dd09e18bfd76aabc24a0081ce2856f330504ed".to_owned(),
+                ]),
+            )])),
             force_no_match: false,
         };
 
@@ -1062,7 +990,7 @@ mod tests {
             limit: None,
             tags: Some(HashMap::from([
                 ('d', HashSet::from(["follow".to_owned()])),
-                ('t', HashSet::from(["siamstr".to_owned()]))
+                ('t', HashSet::from(["siamstr".to_owned()])),
             ])),
             force_no_match: false,
         };
@@ -1079,9 +1007,7 @@ mod tests {
             until: None,
             authors: None,
             limit: None,
-            tags: Some(HashMap::from([
+            tags: Some(HashMap::from([('a', HashSet::new())])),
-                ('a', HashSet::new())
-            ])),
             force_no_match: false,
         };
         assert!(query_from_filter(&filter).is_none());

src/repo/sqlite.rs

@@ -4,8 +4,6 @@ use crate::config::Settings;
 use crate::db::QueryResult;
 use crate::error::{Error::SqlError, Result};
 use crate::event::{single_char_tagname, Event};
-use crate::hexrange::hex_range;
-use crate::hexrange::HexSearch;
 use crate::nip05::{Nip05Name, VerificationRecord};
 use crate::payment::{InvoiceInfo, InvoiceStatus};
 use crate::repo::sqlite_migration::{upgrade_db, STARTUP_SQL};
@@ -994,24 +992,8 @@ fn query_from_filter(f: &ReqFilter) -> (String, Vec<Box<dyn ToSql>>, Option<Stri
         // take each author and convert to a hexsearch
         let mut auth_searches: Vec<String> = vec![];
         for auth in authvec {
-            match hex_range(auth) {
-                Some(HexSearch::Exact(ex)) => {
             auth_searches.push("author=?".to_owned());
-                    params.push(Box::new(ex));
+            params.push(Box::new(auth.clone()));
-                }
-                Some(HexSearch::Range(lower, upper)) => {
-                    auth_searches.push("(author>? AND author<?)".to_owned());
-                    params.push(Box::new(lower));
-                    params.push(Box::new(upper));
-                }
-                Some(HexSearch::LowerOnly(lower)) => {
-                    auth_searches.push("author>?".to_owned());
-                    params.push(Box::new(lower));
-                }
-                None => {
-                    trace!("Could not parse hex range from author {:?}", auth);
-                }
-            }
         }
         if !authvec.is_empty() {
             let auth_clause = format!("({})", auth_searches.join(" OR "));
@@ -1032,24 +1014,8 @@ fn query_from_filter(f: &ReqFilter) -> (String, Vec<Box<dyn ToSql>>, Option<Stri
         // take each author and convert to a hexsearch
         let mut id_searches: Vec<String> = vec![];
         for id in idvec {
-            match hex_range(id) {
-                Some(HexSearch::Exact(ex)) => {
             id_searches.push("event_hash=?".to_owned());
-                    params.push(Box::new(ex));
+            params.push(Box::new(id.clone()));
-                }
-                Some(HexSearch::Range(lower, upper)) => {
-                    id_searches.push("(event_hash>? AND event_hash<?)".to_owned());
-                    params.push(Box::new(lower));
-                    params.push(Box::new(upper));
-                }
-                Some(HexSearch::LowerOnly(lower)) => {
-                    id_searches.push("event_hash>?".to_owned());
-                    params.push(Box::new(lower));
-                }
-                None => {
-                    info!("Could not parse hex range from id {:?}", id);
-                }
-            }
         }
         if idvec.is_empty() {
             // if the ids list was empty, we should never return