X-Git-Url: http://git.scottworley.com/voter/blobdiff_plain/7717ed89ce2c276f1e2adc15bd859d6167deda98..8133330850750d4f3382ddc3b645642eae3ea08f:/src/main.rs diff --git a/src/main.rs b/src/main.rs index 98cfc35..2e5de54 100644 --- a/src/main.rs +++ b/src/main.rs @@ -1,4 +1,11 @@ +// voter: A simple CGI vote recorder, approval-voting-style +// +// This program is free software: you can redistribute it and/or modify it +// under the terms of the GNU Affero General Public License as published +// by the Free Software Foundation, version 3. + use rand::prelude::*; +use std::collections::{HashMap, HashSet}; use std::io::prelude::*; use std::path::{Path, PathBuf}; @@ -11,7 +18,7 @@ fn validate_path(path: &str) -> Result { if path == "/" { return Err(cgi::text_response(404, "(This is the voting place. You should have been given a more specific URL for the specific thing you've been invited to vote on.)")); } - if path.contains("..") || !path.starts_with("/") { + if path.contains("..") || !path.starts_with('/') { return Err(invalid_path()); } let dir = Path::new(&format!("{DATA_PATH}{path}")).to_path_buf(); @@ -44,14 +51,42 @@ fn get_voter(request: &cgi::Request) -> Result<&[u8], cgi::Response> { } } +fn tally_votes(dir: PathBuf) -> std::io::Result>> { + let mut tally: HashMap> = HashMap::new(); + if let Ok(vfile) = std::fs::File::open(dir.join("votes")) { + for liner in std::io::BufReader::new(vfile).lines() { + let line = liner?; + if let Some((voter, datum)) = line.split_once(' ') { + if voter.len() == COOKIE_LENGTH { + if let Some((vote, candidate)) = datum.split_once(' ') { + if vote == "0" { + if let Some(entry) = tally.get_mut(candidate) { + entry.remove(voter); + } + } else if vote == "1" { + tally + .entry(candidate.to_owned()) + .or_default() + .insert(voter.to_owned()); + } + } + } + } + } + } + Ok(tally) +} + +fn valid_id_char(c: &u8) -> bool { + (b'A'..=b'Z').contains(c) || (b'a'..=b'z').contains(c) || (b'0'..=b'9').contains(c) +} + fn make_random_id() -> [u8; COOKIE_LENGTH] { let mut id = [0; COOKIE_LENGTH]; - for i in 0..COOKIE_LENGTH { - while !(b'A'..=b'Z').contains(&id[i]) - && !(b'a'..=b'z').contains(&id[i]) - && !(b'0'..=b'9').contains(&id[i]) + for c in id.iter_mut() { + while !valid_id_char(c) { - id[i] = random() + *c = random() } } id @@ -65,7 +100,7 @@ fn set_cookie(mut response: cgi::Response, path: &str) -> Result Vote!