292 lines
9.8 KiB
Rust
292 lines
9.8 KiB
Rust
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use std::collections::HashSet;
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use anyhow::{Error, bail};
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use apt_pkg_native::Cache;
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use proxmox::const_regex;
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use crate::api2::types::APTUpdateInfo;
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const_regex! {
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VERSION_EPOCH_REGEX = r"^\d+:";
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FILENAME_EXTRACT_REGEX = r"^.*/.*?_(.*)_Packages$";
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}
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// FIXME: once the 'changelog' API call switches over to 'apt-get changelog' only,
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// consider removing this function entirely, as it's value is never used anywhere
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// then (widget-toolkit doesn't use the value either)
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fn get_changelog_url(
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package: &str,
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filename: &str,
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version: &str,
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origin: &str,
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component: &str,
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) -> Result<String, Error> {
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if origin == "" {
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bail!("no origin available for package {}", package);
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}
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if origin == "Debian" {
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let mut command = std::process::Command::new("apt-get");
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command.arg("changelog");
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command.arg("--print-uris");
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command.arg(package);
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let output = crate::tools::run_command(command, None)?; // format: 'http://foo/bar' package.changelog
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let output = match output.splitn(2, ' ').next() {
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Some(output) => {
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if output.len() < 2 {
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bail!("invalid output (URI part too short) from 'apt-get changelog --print-uris': {}", output)
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}
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output[1..output.len()-1].to_owned()
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},
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None => bail!("invalid output from 'apt-get changelog --print-uris': {}", output)
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};
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return Ok(output);
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} else if origin == "Proxmox" {
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// FIXME: Use above call to 'apt changelog <pkg> --print-uris' as well.
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// Currently not possible as our packages do not have a URI set in their Release file.
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let version = (VERSION_EPOCH_REGEX.regex_obj)().replace_all(version, "");
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let base = match (FILENAME_EXTRACT_REGEX.regex_obj)().captures(filename) {
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Some(captures) => {
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let base_capture = captures.get(1);
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match base_capture {
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Some(base_underscore) => base_underscore.as_str().replace("_", "/"),
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None => bail!("incompatible filename, cannot find regex group")
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}
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},
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None => bail!("incompatible filename, doesn't match regex")
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};
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return Ok(format!("http://download.proxmox.com/{}/{}_{}.changelog",
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base, package, version));
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}
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bail!("unknown origin ({}) or component ({})", origin, component)
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}
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pub struct FilterData<'a> {
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// this is version info returned by APT
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pub installed_version: Option<&'a str>,
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pub candidate_version: &'a str,
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// this is the version info the filter is supposed to check
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pub active_version: &'a str,
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}
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enum PackagePreSelect {
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OnlyInstalled,
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OnlyNew,
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All,
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}
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pub fn list_installed_apt_packages<F: Fn(FilterData) -> bool>(
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filter: F,
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only_versions_for: Option<&str>,
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) -> Vec<APTUpdateInfo> {
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let mut ret = Vec::new();
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let mut depends = HashSet::new();
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// note: this is not an 'apt update', it just re-reads the cache from disk
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let mut cache = Cache::get_singleton();
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cache.reload();
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let mut cache_iter = match only_versions_for {
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Some(name) => cache.find_by_name(name),
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None => cache.iter()
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};
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loop {
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match cache_iter.next() {
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Some(view) => {
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let di = if only_versions_for.is_some() {
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query_detailed_info(
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PackagePreSelect::All,
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&filter,
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view,
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None
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)
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} else {
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query_detailed_info(
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PackagePreSelect::OnlyInstalled,
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&filter,
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view,
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Some(&mut depends)
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)
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};
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if let Some(info) = di {
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ret.push(info);
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}
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if only_versions_for.is_some() {
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break;
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}
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},
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None => {
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drop(cache_iter);
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// also loop through missing dependencies, as they would be installed
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for pkg in depends.iter() {
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let mut iter = cache.find_by_name(&pkg);
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let view = match iter.next() {
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Some(view) => view,
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None => continue // package not found, ignore
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};
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let di = query_detailed_info(
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PackagePreSelect::OnlyNew,
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&filter,
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view,
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None
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);
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if let Some(info) = di {
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ret.push(info);
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}
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}
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break;
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}
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}
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}
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return ret;
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}
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fn query_detailed_info<'a, F, V>(
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pre_select: PackagePreSelect,
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filter: F,
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view: V,
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depends: Option<&mut HashSet<String>>,
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) -> Option<APTUpdateInfo>
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where
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F: Fn(FilterData) -> bool,
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V: std::ops::Deref<Target = apt_pkg_native::sane::PkgView<'a>>
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{
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let current_version = view.current_version();
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let candidate_version = view.candidate_version();
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let (current_version, candidate_version) = match pre_select {
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PackagePreSelect::OnlyInstalled => match (current_version, candidate_version) {
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(Some(cur), Some(can)) => (Some(cur), can), // package installed and there is an update
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(Some(cur), None) => (Some(cur.clone()), cur), // package installed and up-to-date
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(None, Some(_)) => return None, // package could be installed
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(None, None) => return None, // broken
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},
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PackagePreSelect::OnlyNew => match (current_version, candidate_version) {
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(Some(_), Some(_)) => return None,
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(Some(_), None) => return None,
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(None, Some(can)) => (None, can),
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(None, None) => return None,
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},
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PackagePreSelect::All => match (current_version, candidate_version) {
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(Some(cur), Some(can)) => (Some(cur), can),
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(Some(cur), None) => (Some(cur.clone()), cur),
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(None, Some(can)) => (None, can),
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(None, None) => return None,
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},
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};
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// get additional information via nested APT 'iterators'
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let mut view_iter = view.versions();
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while let Some(ver) = view_iter.next() {
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let package = view.name();
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let version = ver.version();
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let mut origin_res = "unknown".to_owned();
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let mut section_res = "unknown".to_owned();
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let mut priority_res = "unknown".to_owned();
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let mut change_log_url = "".to_owned();
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let mut short_desc = package.clone();
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let mut long_desc = "".to_owned();
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let fd = FilterData {
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installed_version: current_version.as_deref(),
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candidate_version: &candidate_version,
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active_version: &version,
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};
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if filter(fd) {
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if let Some(section) = ver.section() {
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section_res = section;
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}
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if let Some(prio) = ver.priority_type() {
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priority_res = prio;
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}
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// assume every package has only one origin file (not
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// origin, but origin *file*, for some reason those seem to
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// be different concepts in APT)
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let mut origin_iter = ver.origin_iter();
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let origin = origin_iter.next();
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if let Some(origin) = origin {
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if let Some(sd) = origin.short_desc() {
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short_desc = sd;
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}
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if let Some(ld) = origin.long_desc() {
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long_desc = ld;
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}
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// the package files appear in priority order, meaning
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// the one for the candidate version is first - this is fine
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// however, as the source package should be the same for all
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// versions anyway
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let mut pkg_iter = origin.file();
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let pkg_file = pkg_iter.next();
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if let Some(pkg_file) = pkg_file {
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if let Some(origin_name) = pkg_file.origin() {
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origin_res = origin_name;
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}
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let filename = pkg_file.file_name();
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let component = pkg_file.component();
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// build changelog URL from gathered information
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// ignore errors, use empty changelog instead
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let url = get_changelog_url(&package, &filename,
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&version, &origin_res, &component);
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if let Ok(url) = url {
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change_log_url = url;
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}
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}
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}
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if let Some(depends) = depends {
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let mut dep_iter = ver.dep_iter();
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loop {
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let dep = match dep_iter.next() {
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Some(dep) if dep.dep_type() != "Depends" => continue,
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Some(dep) => dep,
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None => break
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};
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let dep_pkg = dep.target_pkg();
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let name = dep_pkg.name();
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depends.insert(name);
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}
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}
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return Some(APTUpdateInfo {
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package,
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title: short_desc,
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arch: view.arch(),
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description: long_desc,
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change_log_url,
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origin: origin_res,
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version: candidate_version.clone(),
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old_version: match current_version {
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Some(vers) => vers,
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None => "".to_owned()
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},
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priority: priority_res,
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section: section_res,
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});
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}
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}
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return None;
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}
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