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/// This program collects statistics about e.g. the SKS packet dump.
///
/// Note that to achieve reasonable performance, you need to compile
/// Sequoia and this program with optimizations, either by copying
/// this example to a new project and compile the release target, or
/// by adding this to Sequoia's top-level Cargo.toml:
///
/// [profile.dev]
/// opt-level = 3
use std::env;
use std::fs::File;
extern crate buffered_reader;
use buffered_reader::BufferedReaderGeneric;
extern crate openpgp;
use openpgp::{Packet, Tag};
use openpgp::packet::BodyLength;
use openpgp::parse::PacketParser;
fn main() {
let args: Vec<String> = env::args().collect();
if args.len() != 2 {
panic!("Collects statistics about OpenPGP packet dumps.\n\n\
Usage: {} <packet-dump>\n", args[0]);
}
// Global stats.
let mut packet_count = 0;
let mut packet_size = 0 as usize;
// Per-tag statistics.
let mut tags_count = vec![0; 64];
let mut tags_unknown = vec![0; 64];
let mut tags_size_bytes = vec![0 as usize; 64];
let mut tags_size_count = vec![0; 64];
let mut tags_size_min = vec![::std::u32::MAX; 64];
let mut tags_size_max = vec![0; 64];
// Per-TPK statistics.
let mut tpk_count = 0;
let mut tpk = PerTPK::min();
let mut tpk_min = PerTPK::max();
let mut tpk_max = PerTPK::min();
// Create a parser.
let br = BufferedReaderGeneric::new(
File::open(&args[1]).expect("Failed to open file"),
Some(128 * 1024 * 1024) // Use a large buffer.
);
let mut ppo = PacketParser::from_reader(br)
.expect("Failed to create reader");
// Iterate over all packets.
while let Some(pp) = ppo {
// While the packet is in the parser, get some data for later.
let size = match pp.header.length {
BodyLength::Full(n) => Some(n),
_ => None,
};
// Get the packet and advance the parser.
let (packet, _, tmp, _) = pp.next()
.expect("Failed to get next packet");
ppo = tmp;
packet_count += 1;
if let Some(n) = size {
packet_size += n as usize;
}
let i = u8::from(packet.tag()) as usize;
tags_count[i] += 1;
// If a new TPK starts, update TPK statistics.
if let Packet::PublicKey(_) = packet {
if tpk_count > 0 {
tpk.update_min_max(&mut tpk_min, &mut tpk_max);
}
tpk_count += 1;
tpk = PerTPK::min();
}
if let Packet::Unknown(_) = packet {
tags_unknown[i] += 1;
} else {
// Only record size statistics of packets we successfully
// parsed.
if let Some(n) = size {
tags_size_bytes[i] += n as usize;
tags_size_count[i] += 1;
if n < tags_size_min[i] {
tags_size_min[i] = n;
}
if n > tags_size_max[i] {
tags_size_max[i] = n;
}
tpk.bytes += n as usize;
}
tpk.packets += 1;
tpk.tags[i] += 1;
}
}
tpk.update_min_max(&mut tpk_min, &mut tpk_max);
// Print statistics.
println!("# Packet statistics\n\n\
{:>15} {:>9} {:>9} {:>9} {:>9} {:>9}",
"Packet tag", "count", "unknown",
"min size", "mean size", "max size");
println!("-------------------------------------------------------\
----------");
for t in 0..64 {
let count = tags_count[t];
if count > 0 {
println!("{:>15} {:>9} {:>9} {:>9} {:>9} {:>9}",
format!("{:?}", Tag::from(t as u8)),
count,
tags_unknown[t],
tags_size_min[t],
tags_size_bytes[t] / tags_size_count[t],
tags_size_max[t]);
}
}
println!();
println!("# TPK statistics\n\n\
{:>15} {:>9} {:>9} {:>9}",
"", "min", "mean", "max");
println!("---------------------------------------------");
println!("{:>15} {:>9} {:>9} {:>9}",
"Size (packets)",
tpk_min.packets, packet_count / tpk_count, tpk_max.packets);
println!("{:>15} {:>9} {:>9} {:>9}",
"Size (bytes)",
tpk_min.bytes, packet_size / tpk_count, tpk_max.bytes);
for t in 0..64 {
let max = tpk_max.tags[t];
if t as u8 != Tag::PublicKey.into() && max > 0 {
println!("{:>15} {:>9} {:>9} {:>9}",
format!("{:?}", Tag::from(t as u8)),
tpk_min.tags[t],
tags_count[t] / tpk_count,
max);
}
}
}
struct PerTPK {
packets: usize,
bytes: usize,
tags: Vec<u32>,
}
impl PerTPK {
fn min() -> Self {
PerTPK {
packets: 0,
bytes: 0,
tags: vec![0; 64],
}
}
fn max() -> Self {
PerTPK {
packets: ::std::usize::MAX,
bytes: ::std::usize::MAX,
tags: vec![::std::u32::MAX; 64],
}
}
fn update_min_max(&self, min: &mut PerTPK, max: &mut PerTPK) {
if self.packets < min.packets {
min.packets = self.packets;
}
if self.packets > max.packets {
max.packets = self.packets;
}
if self.bytes < min.bytes {
min.bytes = self.bytes;
}
if self.bytes > max.bytes {
max.bytes = self.bytes;
}
for i in 0..64 {
if self.tags[i] < min.tags[i] {
min.tags[i] = self.tags[i];
}
if self.tags[i] > max.tags[i] {
max.tags[i] = self.tags[i];
}
}
}
}
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