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Commit | Line | Data |
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51b499db DM |
1 | //! Tools and utilities |
2 | //! | |
3 | //! This is a collection of small and useful tools. | |
6100071f | 4 | use std::any::Any; |
61653382 | 5 | use std::borrow::Borrow; |
6100071f | 6 | use std::collections::HashMap; |
62ee2eb4 | 7 | use std::hash::BuildHasher; |
98c259b4 | 8 | use std::fs::File; |
b649887e | 9 | use std::io::{self, BufRead, Read, Seek, SeekFrom}; |
98c259b4 | 10 | use std::os::unix::io::RawFd; |
6100071f | 11 | use std::path::Path; |
365bb90f | 12 | |
f7d4e4b5 | 13 | use anyhow::{bail, format_err, Error}; |
af926291 | 14 | use serde_json::Value; |
c5946faf | 15 | use openssl::hash::{hash, DigestBytes, MessageDigest}; |
968a0ab2 | 16 | use percent_encoding::{utf8_percent_encode, AsciiSet}; |
0fe5d605 | 17 | |
00ec8d16 | 18 | pub use proxmox::tools::fd::Fd; |
95f36925 | 19 | use proxmox::tools::fs::{create_path, CreateOptions}; |
00ec8d16 | 20 | |
1d781c5b | 21 | use proxmox_http::{ |
7d2be91b FG |
22 | client::SimpleHttp, |
23 | client::SimpleHttpOptions, | |
24 | ProxyConfig, | |
25 | }; | |
57889533 | 26 | |
6100071f | 27 | pub mod acl; |
e6513bd5 | 28 | pub mod apt; |
556eb70e | 29 | pub mod async_io; |
6ed25cbe | 30 | pub mod borrow; |
ec01eead | 31 | pub mod cert; |
ea62611d | 32 | pub mod compression; |
bc5c1a9a | 33 | pub mod config; |
a5bdc987 | 34 | pub mod cpio; |
6100071f | 35 | pub mod daemon; |
10effc98 | 36 | pub mod disks; |
4939255f | 37 | pub mod format; |
fb01fd3a WB |
38 | pub mod fs; |
39 | pub mod fuse_loop; | |
e5ef69ec | 40 | |
fda19dcc DM |
41 | mod memcom; |
42 | pub use memcom::Memcom; | |
43 | ||
9ff747ef | 44 | pub mod json; |
8074d2b0 | 45 | pub mod logrotate; |
45f9b32e | 46 | pub mod loopdev; |
fb01fd3a | 47 | pub mod lru_cache; |
5446bfbb | 48 | pub mod async_lru_cache; |
fb01fd3a | 49 | pub mod nom; |
59e94227 | 50 | pub mod serde_filter; |
fb01fd3a | 51 | pub mod statistics; |
7b22fb25 | 52 | pub mod subscription; |
fb01fd3a WB |
53 | pub mod systemd; |
54 | pub mod ticket; | |
55 | pub mod xattr; | |
fdce52aa | 56 | pub mod zip; |
9372c078 | 57 | pub mod sgutils2; |
639a6782 | 58 | pub mod paperkey; |
f1d99e3f | 59 | |
fb01fd3a WB |
60 | pub mod parallel_handler; |
61 | pub use parallel_handler::ParallelHandler; | |
3c9b3702 | 62 | |
f1d99e3f | 63 | mod wrapped_reader_stream; |
fb01fd3a | 64 | pub use wrapped_reader_stream::{AsyncReaderStream, StdChannelStream, WrappedReaderStream}; |
dcd033a5 | 65 | |
943479f5 | 66 | mod async_channel_writer; |
fb01fd3a | 67 | pub use async_channel_writer::AsyncChannelWriter; |
943479f5 | 68 | |
dcd033a5 | 69 | mod std_channel_writer; |
fb01fd3a | 70 | pub use std_channel_writer::StdChannelWriter; |
8cf6e764 | 71 | |
f1d76ecf DC |
72 | mod tokio_writer_adapter; |
73 | pub use tokio_writer_adapter::TokioWriterAdapter; | |
74 | ||
a650f503 | 75 | mod process_locker; |
fb01fd3a | 76 | pub use process_locker::{ProcessLocker, ProcessLockExclusiveGuard, ProcessLockSharedGuard}; |
a650f503 | 77 | |
3b151414 | 78 | mod file_logger; |
fb01fd3a | 79 | pub use file_logger::{FileLogger, FileLogOptions}; |
3b151414 | 80 | |
490be29e | 81 | mod broadcast_future; |
fb01fd3a | 82 | pub use broadcast_future::{BroadcastData, BroadcastFuture}; |
490be29e | 83 | |
fded74d0 | 84 | /// The `BufferedRead` trait provides a single function |
0a72e267 DM |
85 | /// `buffered_read`. It returns a reference to an internal buffer. The |
86 | /// purpose of this traid is to avoid unnecessary data copies. | |
fded74d0 | 87 | pub trait BufferedRead { |
318564ac DM |
88 | /// This functions tries to fill the internal buffers, then |
89 | /// returns a reference to the available data. It returns an empty | |
90 | /// buffer if `offset` points to the end of the file. | |
0a72e267 DM |
91 | fn buffered_read(&mut self, offset: u64) -> Result<&[u8], Error>; |
92 | } | |
93 | ||
f5f13ebc | 94 | pub fn json_object_to_query(data: Value) -> Result<String, Error> { |
f5f13ebc DM |
95 | let mut query = url::form_urlencoded::Serializer::new(String::new()); |
96 | ||
97 | let object = data.as_object().ok_or_else(|| { | |
98 | format_err!("json_object_to_query: got wrong data type (expected object).") | |
99 | })?; | |
100 | ||
101 | for (key, value) in object { | |
102 | match value { | |
6100071f WB |
103 | Value::Bool(b) => { |
104 | query.append_pair(key, &b.to_string()); | |
105 | } | |
106 | Value::Number(n) => { | |
107 | query.append_pair(key, &n.to_string()); | |
108 | } | |
109 | Value::String(s) => { | |
110 | query.append_pair(key, &s); | |
111 | } | |
f5f13ebc DM |
112 | Value::Array(arr) => { |
113 | for element in arr { | |
114 | match element { | |
6100071f WB |
115 | Value::Bool(b) => { |
116 | query.append_pair(key, &b.to_string()); | |
117 | } | |
118 | Value::Number(n) => { | |
119 | query.append_pair(key, &n.to_string()); | |
120 | } | |
121 | Value::String(s) => { | |
122 | query.append_pair(key, &s); | |
123 | } | |
124 | _ => bail!( | |
125 | "json_object_to_query: unable to handle complex array data types." | |
126 | ), | |
f5f13ebc DM |
127 | } |
128 | } | |
129 | } | |
130 | _ => bail!("json_object_to_query: unable to handle complex data types."), | |
131 | } | |
132 | } | |
133 | ||
134 | Ok(query.finish()) | |
135 | } | |
136 | ||
0fe5d605 | 137 | pub fn required_string_param<'a>(param: &'a Value, name: &str) -> Result<&'a str, Error> { |
6100071f | 138 | match param[name].as_str() { |
0fe5d605 DM |
139 | Some(s) => Ok(s), |
140 | None => bail!("missing parameter '{}'", name), | |
141 | } | |
142 | } | |
0d38dcb4 | 143 | |
e17d5d86 DM |
144 | pub fn required_string_property<'a>(param: &'a Value, name: &str) -> Result<&'a str, Error> { |
145 | match param[name].as_str() { | |
146 | Some(s) => Ok(s), | |
147 | None => bail!("missing property '{}'", name), | |
148 | } | |
149 | } | |
150 | ||
a4ba60be | 151 | pub fn required_integer_param(param: &Value, name: &str) -> Result<i64, Error> { |
6100071f | 152 | match param[name].as_i64() { |
0d38dcb4 DM |
153 | Some(s) => Ok(s), |
154 | None => bail!("missing parameter '{}'", name), | |
f8dfbb45 DM |
155 | } |
156 | } | |
157 | ||
a4ba60be | 158 | pub fn required_integer_property(param: &Value, name: &str) -> Result<i64, Error> { |
e17d5d86 DM |
159 | match param[name].as_i64() { |
160 | Some(s) => Ok(s), | |
161 | None => bail!("missing property '{}'", name), | |
162 | } | |
163 | } | |
164 | ||
35304303 | 165 | pub fn required_array_param<'a>(param: &'a Value, name: &str) -> Result<&'a [Value], Error> { |
6100071f | 166 | match param[name].as_array() { |
35304303 | 167 | Some(s) => Ok(&s), |
f8dfbb45 | 168 | None => bail!("missing parameter '{}'", name), |
0d38dcb4 DM |
169 | } |
170 | } | |
383e8577 | 171 | |
35304303 | 172 | pub fn required_array_property<'a>(param: &'a Value, name: &str) -> Result<&'a [Value], Error> { |
e17d5d86 | 173 | match param[name].as_array() { |
35304303 | 174 | Some(s) => Ok(&s), |
e17d5d86 DM |
175 | None => bail!("missing property '{}'", name), |
176 | } | |
177 | } | |
178 | ||
a4ba60be WB |
179 | pub fn complete_file_name<S>(arg: &str, _param: &HashMap<String, String, S>) -> Vec<String> |
180 | where | |
181 | S: BuildHasher, | |
182 | { | |
383e8577 DM |
183 | let mut result = vec![]; |
184 | ||
6100071f | 185 | use nix::fcntl::AtFlags; |
383e8577 DM |
186 | use nix::fcntl::OFlag; |
187 | use nix::sys::stat::Mode; | |
383e8577 | 188 | |
62ee2eb4 | 189 | let mut dirname = std::path::PathBuf::from(if arg.is_empty() { "./" } else { arg }); |
383e8577 DM |
190 | |
191 | let is_dir = match nix::sys::stat::fstatat(libc::AT_FDCWD, &dirname, AtFlags::empty()) { | |
192 | Ok(stat) => (stat.st_mode & libc::S_IFMT) == libc::S_IFDIR, | |
193 | Err(_) => false, | |
194 | }; | |
195 | ||
196 | if !is_dir { | |
197 | if let Some(parent) = dirname.parent() { | |
198 | dirname = parent.to_owned(); | |
199 | } | |
200 | } | |
201 | ||
6100071f WB |
202 | let mut dir = |
203 | match nix::dir::Dir::openat(libc::AT_FDCWD, &dirname, OFlag::O_DIRECTORY, Mode::empty()) { | |
204 | Ok(d) => d, | |
205 | Err(_) => return result, | |
206 | }; | |
383e8577 DM |
207 | |
208 | for item in dir.iter() { | |
209 | if let Ok(entry) = item { | |
210 | if let Ok(name) = entry.file_name().to_str() { | |
6100071f WB |
211 | if name == "." || name == ".." { |
212 | continue; | |
213 | } | |
383e8577 DM |
214 | let mut newpath = dirname.clone(); |
215 | newpath.push(name); | |
216 | ||
6100071f WB |
217 | if let Ok(stat) = |
218 | nix::sys::stat::fstatat(libc::AT_FDCWD, &newpath, AtFlags::empty()) | |
219 | { | |
383e8577 DM |
220 | if (stat.st_mode & libc::S_IFMT) == libc::S_IFDIR { |
221 | newpath.push(""); | |
222 | if let Some(newpath) = newpath.to_str() { | |
223 | result.push(newpath.to_owned()); | |
224 | } | |
225 | continue; | |
6100071f | 226 | } |
383e8577 DM |
227 | } |
228 | if let Some(newpath) = newpath.to_str() { | |
229 | result.push(newpath.to_owned()); | |
230 | } | |
6100071f | 231 | } |
383e8577 DM |
232 | } |
233 | } | |
234 | ||
235 | result | |
236 | } | |
443f3743 DM |
237 | |
238 | /// Scan directory for matching file names. | |
239 | /// | |
240 | /// Scan through all directory entries and call `callback()` function | |
241 | /// if the entry name matches the regular expression. This function | |
242 | /// used unix `openat()`, so you can pass absolute or relative file | |
243 | /// names. This function simply skips non-UTF8 encoded names. | |
244 | pub fn scandir<P, F>( | |
245 | dirfd: RawFd, | |
121f18ef | 246 | path: &P, |
443f3743 | 247 | regex: ®ex::Regex, |
6100071f | 248 | mut callback: F, |
443f3743 | 249 | ) -> Result<(), Error> |
6100071f WB |
250 | where |
251 | F: FnMut(RawFd, &str, nix::dir::Type) -> Result<(), Error>, | |
252 | P: ?Sized + nix::NixPath, | |
443f3743 | 253 | { |
121f18ef | 254 | for entry in self::fs::scan_subdir(dirfd, path, regex)? { |
443f3743 DM |
255 | let entry = entry?; |
256 | let file_type = match entry.file_type() { | |
257 | Some(file_type) => file_type, | |
258 | None => bail!("unable to detect file type"), | |
259 | }; | |
443f3743 | 260 | |
6100071f WB |
261 | callback( |
262 | entry.parent_fd(), | |
263 | unsafe { entry.file_name_utf8_unchecked() }, | |
264 | file_type, | |
265 | )?; | |
443f3743 DM |
266 | } |
267 | Ok(()) | |
268 | } | |
7e13b2d6 | 269 | |
c5946faf WB |
270 | /// Shortcut for md5 sums. |
271 | pub fn md5sum(data: &[u8]) -> Result<DigestBytes, Error> { | |
272 | hash(MessageDigest::md5(), data).map_err(Error::from) | |
273 | } | |
274 | ||
7e13b2d6 | 275 | pub fn get_hardware_address() -> Result<String, Error> { |
1631c54f | 276 | static FILENAME: &str = "/etc/ssh/ssh_host_rsa_key.pub"; |
7e13b2d6 | 277 | |
72c0e102 TL |
278 | let contents = proxmox::tools::fs::file_get_contents(FILENAME) |
279 | .map_err(|e| format_err!("Error getting host key - {}", e))?; | |
280 | let digest = md5sum(&contents) | |
281 | .map_err(|e| format_err!("Error digesting host key - {}", e))?; | |
7e13b2d6 | 282 | |
52fe9e8e | 283 | Ok(proxmox::tools::bin_to_hex(&digest).to_uppercase()) |
7e13b2d6 | 284 | } |
22968600 | 285 | |
af2fddea DM |
286 | pub fn assert_if_modified(digest1: &str, digest2: &str) -> Result<(), Error> { |
287 | if digest1 != digest2 { | |
6100071f | 288 | bail!("detected modified configuration - file changed by other user? Try again."); |
af2fddea DM |
289 | } |
290 | Ok(()) | |
291 | } | |
b9903d63 | 292 | |
09f12d1c | 293 | /// Extract a specific cookie from cookie header. |
b9903d63 | 294 | /// We assume cookie_name is already url encoded. |
09f12d1c | 295 | pub fn extract_cookie(cookie: &str, cookie_name: &str) -> Option<String> { |
b9903d63 | 296 | for pair in cookie.split(';') { |
b9903d63 DM |
297 | let (name, value) = match pair.find('=') { |
298 | Some(i) => (pair[..i].trim(), pair[(i + 1)..].trim()), | |
299 | None => return None, // Cookie format error | |
300 | }; | |
301 | ||
302 | if name == cookie_name { | |
8a1028e0 | 303 | use percent_encoding::percent_decode; |
b9903d63 DM |
304 | if let Ok(value) = percent_decode(value.as_bytes()).decode_utf8() { |
305 | return Some(value.into()); | |
306 | } else { | |
307 | return None; // Cookie format error | |
308 | } | |
309 | } | |
310 | } | |
311 | ||
312 | None | |
313 | } | |
af53186e | 314 | |
968a0ab2 DC |
315 | /// percent encode a url component |
316 | pub fn percent_encode_component(comp: &str) -> String { | |
317 | utf8_percent_encode(comp, percent_encoding::NON_ALPHANUMERIC).to_string() | |
318 | } | |
319 | ||
61653382 | 320 | pub fn join<S: Borrow<str>>(data: &[S], sep: char) -> String { |
af53186e DM |
321 | let mut list = String::new(); |
322 | ||
323 | for item in data { | |
62ee2eb4 | 324 | if !list.is_empty() { |
6100071f WB |
325 | list.push(sep); |
326 | } | |
61653382 | 327 | list.push_str(item.borrow()); |
af53186e DM |
328 | } |
329 | ||
330 | list | |
331 | } | |
ff7049d4 | 332 | |
002a191a DM |
333 | /// Detect modified configuration files |
334 | /// | |
add5861e | 335 | /// This function fails with a reasonable error message if checksums do not match. |
002a191a DM |
336 | pub fn detect_modified_configuration_file(digest1: &[u8;32], digest2: &[u8;32]) -> Result<(), Error> { |
337 | if digest1 != digest2 { | |
a4ba60be | 338 | bail!("detected modified configuration - file changed by other user? Try again."); |
002a191a DM |
339 | } |
340 | Ok(()) | |
341 | } | |
342 | ||
3578d99f DM |
343 | /// normalize uri path |
344 | /// | |
345 | /// Do not allow ".", "..", or hidden files ".XXXX" | |
346 | /// Also remove empty path components | |
347 | pub fn normalize_uri_path(path: &str) -> Result<(String, Vec<&str>), Error> { | |
3578d99f DM |
348 | let items = path.split('/'); |
349 | ||
350 | let mut path = String::new(); | |
351 | let mut components = vec![]; | |
352 | ||
353 | for name in items { | |
6100071f WB |
354 | if name.is_empty() { |
355 | continue; | |
356 | } | |
62ee2eb4 | 357 | if name.starts_with('.') { |
3578d99f DM |
358 | bail!("Path contains illegal components."); |
359 | } | |
360 | path.push('/'); | |
361 | path.push_str(name); | |
362 | components.push(name); | |
363 | } | |
364 | ||
365 | Ok((path, components)) | |
366 | } | |
367 | ||
97fab7aa | 368 | /// Helper to check result from std::process::Command output |
143b6545 DM |
369 | /// |
370 | /// The exit_code_check() function should return true if the exit code | |
371 | /// is considered successful. | |
372 | pub fn command_output( | |
373 | output: std::process::Output, | |
144006fa | 374 | exit_code_check: Option<fn(i32) -> bool>, |
e64b9f92 | 375 | ) -> Result<Vec<u8>, Error> { |
97fab7aa DM |
376 | |
377 | if !output.status.success() { | |
378 | match output.status.code() { | |
379 | Some(code) => { | |
143b6545 DM |
380 | let is_ok = match exit_code_check { |
381 | Some(check_fn) => check_fn(code), | |
382 | None => code == 0, | |
383 | }; | |
384 | if !is_ok { | |
97fab7aa DM |
385 | let msg = String::from_utf8(output.stderr) |
386 | .map(|m| if m.is_empty() { String::from("no error message") } else { m }) | |
387 | .unwrap_or_else(|_| String::from("non utf8 error message (suppressed)")); | |
388 | ||
389 | bail!("status code: {} - {}", code, msg); | |
390 | } | |
391 | } | |
392 | None => bail!("terminated by signal"), | |
393 | } | |
394 | } | |
395 | ||
e64b9f92 DM |
396 | Ok(output.stdout) |
397 | } | |
97fab7aa | 398 | |
e64b9f92 DM |
399 | /// Helper to check result from std::process::Command output, returns String. |
400 | /// | |
401 | /// The exit_code_check() function should return true if the exit code | |
402 | /// is considered successful. | |
403 | pub fn command_output_as_string( | |
404 | output: std::process::Output, | |
405 | exit_code_check: Option<fn(i32) -> bool>, | |
406 | ) -> Result<String, Error> { | |
407 | let output = command_output(output, exit_code_check)?; | |
408 | let output = String::from_utf8(output)?; | |
97fab7aa DM |
409 | Ok(output) |
410 | } | |
411 | ||
144006fa DM |
412 | pub fn run_command( |
413 | mut command: std::process::Command, | |
414 | exit_code_check: Option<fn(i32) -> bool>, | |
415 | ) -> Result<String, Error> { | |
416 | ||
417 | let output = command.output() | |
418 | .map_err(|err| format_err!("failed to execute {:?} - {}", command, err))?; | |
419 | ||
f254a270 | 420 | let output = command_output_as_string(output, exit_code_check) |
144006fa DM |
421 | .map_err(|err| format_err!("command {:?} failed - {}", command, err))?; |
422 | ||
423 | Ok(output) | |
424 | } | |
97fab7aa | 425 | |
ff7049d4 | 426 | pub fn fd_change_cloexec(fd: RawFd, on: bool) -> Result<(), Error> { |
6100071f | 427 | use nix::fcntl::{fcntl, FdFlag, F_GETFD, F_SETFD}; |
ff7049d4 WB |
428 | let mut flags = FdFlag::from_bits(fcntl(fd, F_GETFD)?) |
429 | .ok_or_else(|| format_err!("unhandled file flags"))?; // nix crate is stupid this way... | |
430 | flags.set(FdFlag::FD_CLOEXEC, on); | |
431 | fcntl(fd, F_SETFD(flags))?; | |
432 | Ok(()) | |
433 | } | |
9136f857 | 434 | |
9136f857 DM |
435 | static mut SHUTDOWN_REQUESTED: bool = false; |
436 | ||
437 | pub fn request_shutdown() { | |
6100071f WB |
438 | unsafe { |
439 | SHUTDOWN_REQUESTED = true; | |
440 | } | |
7a630df7 | 441 | crate::server::server_shutdown(); |
9136f857 DM |
442 | } |
443 | ||
444 | #[inline(always)] | |
445 | pub fn shutdown_requested() -> bool { | |
446 | unsafe { SHUTDOWN_REQUESTED } | |
447 | } | |
92da93b2 DM |
448 | |
449 | pub fn fail_on_shutdown() -> Result<(), Error> { | |
450 | if shutdown_requested() { | |
451 | bail!("Server shutdown requested - aborting task"); | |
452 | } | |
453 | Ok(()) | |
454 | } | |
d96bb7f1 | 455 | |
c4044009 WB |
456 | /// safe wrapper for `nix::unistd::pipe2` defaulting to `O_CLOEXEC` and guarding the file |
457 | /// descriptors. | |
efd1536e WB |
458 | pub fn pipe() -> Result<(Fd, Fd), Error> { |
459 | let (pin, pout) = nix::unistd::pipe2(nix::fcntl::OFlag::O_CLOEXEC)?; | |
460 | Ok((Fd(pin), Fd(pout))) | |
461 | } | |
2edc341b | 462 | |
c4044009 WB |
463 | /// safe wrapper for `nix::sys::socket::socketpair` defaulting to `O_CLOEXEC` and guarding the file |
464 | /// descriptors. | |
465 | pub fn socketpair() -> Result<(Fd, Fd), Error> { | |
466 | use nix::sys::socket; | |
467 | let (pa, pb) = socket::socketpair( | |
468 | socket::AddressFamily::Unix, | |
469 | socket::SockType::Stream, | |
470 | None, | |
471 | socket::SockFlag::SOCK_CLOEXEC, | |
472 | )?; | |
473 | Ok((Fd(pa), Fd(pb))) | |
474 | } | |
475 | ||
476 | ||
2edc341b DM |
477 | /// An easy way to convert types to Any |
478 | /// | |
479 | /// Mostly useful to downcast trait objects (see RpcEnvironment). | |
480 | pub trait AsAny { | |
dd5495d6 | 481 | fn as_any(&self) -> &dyn Any; |
2edc341b DM |
482 | } |
483 | ||
484 | impl<T: Any> AsAny for T { | |
6100071f WB |
485 | fn as_any(&self) -> &dyn Any { |
486 | self | |
487 | } | |
2edc341b | 488 | } |
8a1028e0 | 489 | |
32413921 FG |
490 | /// The default 2 hours are far too long for PBS |
491 | pub const PROXMOX_BACKUP_TCP_KEEPALIVE_TIME: u32 = 120; | |
57889533 FG |
492 | pub const DEFAULT_USER_AGENT_STRING: &'static str = "proxmox-backup-client/1.0"; |
493 | ||
494 | /// Returns a new instance of `SimpleHttp` configured for PBS usage. | |
495 | pub fn pbs_simple_http(proxy_config: Option<ProxyConfig>) -> SimpleHttp { | |
496 | let options = SimpleHttpOptions { | |
497 | proxy_config, | |
498 | user_agent: Some(DEFAULT_USER_AGENT_STRING.to_string()), | |
499 | tcp_keepalive: Some(PROXMOX_BACKUP_TCP_KEEPALIVE_TIME), | |
500 | ..Default::default() | |
501 | }; | |
502 | ||
503 | SimpleHttp::with_options(options) | |
504 | } | |
32413921 | 505 | |
8a1028e0 WB |
506 | /// This used to be: `SIMPLE_ENCODE_SET` plus space, `"`, `#`, `<`, `>`, backtick, `?`, `{`, `}` |
507 | pub const DEFAULT_ENCODE_SET: &AsciiSet = &percent_encoding::CONTROLS // 0..1f and 7e | |
508 | // The SIMPLE_ENCODE_SET adds space and anything >= 0x7e (7e itself is already included above) | |
509 | .add(0x20) | |
510 | .add(0x7f) | |
511 | // the DEFAULT_ENCODE_SET added: | |
512 | .add(b' ') | |
513 | .add(b'"') | |
514 | .add(b'#') | |
515 | .add(b'<') | |
516 | .add(b'>') | |
517 | .add(b'`') | |
518 | .add(b'?') | |
519 | .add(b'{') | |
520 | .add(b'}'); | |
386990ba WB |
521 | |
522 | /// Get an iterator over lines of a file, skipping empty lines and comments (lines starting with a | |
523 | /// `#`). | |
524 | pub fn file_get_non_comment_lines<P: AsRef<Path>>( | |
525 | path: P, | |
526 | ) -> Result<impl Iterator<Item = io::Result<String>>, Error> { | |
527 | let path = path.as_ref(); | |
528 | ||
529 | Ok(io::BufReader::new( | |
530 | File::open(path).map_err(|err| format_err!("error opening {:?}: {}", path, err))?, | |
531 | ) | |
532 | .lines() | |
533 | .filter_map(|line| match line { | |
534 | Ok(line) => { | |
535 | let line = line.trim(); | |
536 | if line.is_empty() || line.starts_with('#') { | |
537 | None | |
538 | } else { | |
539 | Some(Ok(line.to_string())) | |
540 | } | |
541 | } | |
542 | Err(err) => Some(Err(err)), | |
543 | })) | |
544 | } | |
e693818a | 545 | |
ac7513e3 DM |
546 | pub fn setup_safe_path_env() { |
547 | std::env::set_var("PATH", "/sbin:/bin:/usr/sbin:/usr/bin"); | |
548 | // Make %ENV safer - as suggested by https://perldoc.perl.org/perlsec.html | |
549 | for name in &["IFS", "CDPATH", "ENV", "BASH_ENV"] { | |
550 | std::env::remove_var(name); | |
551 | } | |
552 | } | |
cdf1da28 WB |
553 | |
554 | pub fn strip_ascii_whitespace(line: &[u8]) -> &[u8] { | |
555 | let line = match line.iter().position(|&b| !b.is_ascii_whitespace()) { | |
556 | Some(n) => &line[n..], | |
557 | None => return &[], | |
558 | }; | |
559 | match line.iter().rev().position(|&b| !b.is_ascii_whitespace()) { | |
560 | Some(n) => &line[..(line.len() - n)], | |
561 | None => &[], | |
562 | } | |
563 | } | |
1bc1d81a DM |
564 | |
565 | /// Seeks to start of file and computes the SHA256 hash | |
566 | pub fn compute_file_csum(file: &mut File) -> Result<([u8; 32], u64), Error> { | |
567 | ||
568 | file.seek(SeekFrom::Start(0))?; | |
569 | ||
570 | let mut hasher = openssl::sha::Sha256::new(); | |
571 | let mut buffer = proxmox::tools::vec::undefined(256*1024); | |
572 | let mut size: u64 = 0; | |
573 | ||
574 | loop { | |
575 | let count = match file.read(&mut buffer) { | |
a4ba60be | 576 | Ok(0) => break, |
1bc1d81a DM |
577 | Ok(count) => count, |
578 | Err(ref err) if err.kind() == std::io::ErrorKind::Interrupted => { | |
579 | continue; | |
580 | } | |
581 | Err(err) => return Err(err.into()), | |
582 | }; | |
1bc1d81a DM |
583 | size += count as u64; |
584 | hasher.update(&buffer[..count]); | |
585 | } | |
586 | ||
587 | let csum = hasher.finish(); | |
588 | ||
589 | Ok((csum, size)) | |
590 | } | |
014dc5f9 WB |
591 | |
592 | /// Create the base run-directory. | |
593 | /// | |
594 | /// This exists to fixate the permissions for the run *base* directory while allowing intermediate | |
595 | /// directories after it to have different permissions. | |
596 | pub fn create_run_dir() -> Result<(), Error> { | |
95f36925 WB |
597 | let backup_user = crate::backup::backup_user()?; |
598 | let opts = CreateOptions::new() | |
599 | .owner(backup_user.uid) | |
600 | .group(backup_user.gid); | |
af06decd | 601 | let _: bool = create_path(pbs_buildcfg::PROXMOX_BACKUP_RUN_DIR_M!(), None, Some(opts))?; |
014dc5f9 WB |
602 | Ok(()) |
603 | } | |
0b6d9442 WB |
604 | |
605 | /// Modeled after the nightly `std::ops::ControlFlow`. | |
606 | #[derive(Clone, Copy, Debug, PartialEq)] | |
607 | pub enum ControlFlow<B, C = ()> { | |
608 | Continue(C), | |
609 | Break(B), | |
610 | } | |
611 | ||
612 | impl<B> ControlFlow<B> { | |
613 | pub const CONTINUE: ControlFlow<B, ()> = ControlFlow::Continue(()); | |
614 | } |