-
Notifications
You must be signed in to change notification settings - Fork 884
/
self_update.rs
1523 lines (1283 loc) · 51.1 KB
/
self_update.rs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
//! Self-installation and updating
//!
//! This is the installer at the heart of Rust. If it breaks
//! everything breaks. It is conceptually very simple, as rustup is
//! distributed as a single binary, and installation mostly requires
//! copying it into place. There are some tricky bits though, mostly
//! because of workarounds to self-delete an exe on Windows.
//!
//! During install (as `rustup-init`):
//!
//! * copy the self exe to $CARGO_HOME/bin
//! * hardlink rustc, etc to *that*
//! * update the PATH in a system-specific way
//! * run the equivalent of `rustup default stable`
//!
//! During upgrade (`rustup self upgrade`):
//!
//! * download rustup-init to $CARGO_HOME/bin/rustup-init
//! * run rustu-init with appropriate flags to indicate
//! this is a self-upgrade
//! * rustup-init copies bins and hardlinks into place. On windows
//! this happens *after* the upgrade command exits successfully.
//!
//! During uninstall (`rustup self uninstall`):
//!
//! * Delete `$RUSTUP_HOME`.
//! * Delete everything in `$CARGO_HOME`, including
//! the rustup binary and its hardlinks
//!
//! Deleting the running binary during uninstall is tricky
//! and racy on Windows.
use common::{self, Confirm};
use errors::*;
use rustup_dist::dist;
use rustup_utils::utils;
use std::env;
use std::env::consts::EXE_SUFFIX;
use std::path::{Path, PathBuf, Component};
use std::process::{self, Command};
use std::fs;
use tempdir::TempDir;
use term2;
use regex::Regex;
pub struct InstallOpts {
pub default_host_triple: String,
pub default_toolchain: String,
pub no_modify_path: bool,
}
#[cfg(feature = "no-self-update")]
pub const NEVER_SELF_UPDATE: bool = true;
#[cfg(not(feature = "no-self-update"))]
pub const NEVER_SELF_UPDATE: bool = false;
// The big installation messages. These are macros because the first
// argument of format! needs to be a literal.
macro_rules! pre_install_msg_template {
($platform_msg: expr) => {
concat!(
r"
# Welcome to Rust!
This will download and install the official compiler for the Rust
programming language, and its package manager, Cargo.
It will add the `cargo`, `rustc`, `rustup` and other commands to
Cargo's bin directory, located at:
{cargo_home_bin}
",
$platform_msg
,
r#"
You can uninstall at any time with `rustup self uninstall` and
these changes will be reverted.
"#
)};
}
macro_rules! pre_install_msg_unix {
() => {
pre_install_msg_template!(
"This path will then be added to your `PATH` environment variable by
modifying the profile file{plural} located at:
{rcfiles}"
)};
}
macro_rules! pre_install_msg_win {
() => {
pre_install_msg_template!(
"This path will then be added to your `PATH` environment variable by
modifying the `HKEY_CURRENT_USER/Environment/PATH` registry key."
)};
}
macro_rules! pre_install_msg_no_modify_path {
() => {
pre_install_msg_template!(
"This path needs to be in your `PATH` environment variable,
but will not be added automatically."
)};
}
macro_rules! post_install_msg_unix {
() => {
r"# Rust is installed now. Great!
To get started you need Cargo's bin directory ({cargo_home}/bin) in your `PATH`
environment variable. Next time you log in this will be done
automatically.
To configure your current shell run `source {cargo_home}/env`
"
};
}
macro_rules! post_install_msg_win {
() => {
r"# Rust is installed now. Great!
To get started you need Cargo's bin directory ({cargo_home}\bin) in your `PATH`
environment variable. Future applications will automatically have the
correct environment, but you may need to restart your current shell.
"
};
}
macro_rules! post_install_msg_unix_no_modify_path {
() => {
r"# Rust is installed now. Great!
To get started you need Cargo's bin directory ({cargo_home}/bin) in your `PATH`
environment variable.
To configure your current shell run `source {cargo_home}/env`
"
};
}
macro_rules! post_install_msg_win_no_modify_path {
() => {
r"# Rust is installed now. Great!
To get started you need Cargo's bin directory ({cargo_home}\bin) in your `PATH`
environment variable. This has not been done automatically.
"
};
}
macro_rules! pre_uninstall_msg {
() => {
r"# Thanks for hacking in Rust!
This will uninstall all Rust toolchains and data, and remove
`{cargo_home}/bin` from your `PATH` environment variable.
"
}
}
static MSVC_MESSAGE: &'static str =
r#"# Rust Visual C++ prerequisites
Rust requires the Microsoft C++ build tools for Visual Studio 2013 or
later, but they don't seem to be installed.
The easiest way to acquire the build tools is by installing Microsoft
Visual C++ Build Tools 2015 which provides just the Visual C++ build
tools:
http://landinghub.visualstudio.com/visual-cpp-build-tools
Alternately, you can install Visual Studio 2015 or Visual
Studio 2013 and during install select the "C++ tools":
https://www.visualstudio.com/downloads/
_Install the C++ build tools before proceeding_.
If you will be targeting the GNU ABI or otherwise know what you are
doing then it is fine to continue installation without the build
tools, but otherwise, install the C++ build tools before proceeding.
"#;
static TOOLS: &'static [&'static str]
= &["rustc", "rustdoc", "cargo", "rust-lldb", "rust-gdb", "rls"];
// Tools which are commonly installed by Cargo as well as rustup. We take a bit
// more care with these to ensure we don't overwrite the user's previous
// installation.
static DUP_TOOLS: &'static [&'static str] = &["rustfmt", "cargo-fmt"];
static UPDATE_ROOT: &'static str
= "https://static.rust-lang.org/rustup";
/// `CARGO_HOME` suitable for display, possibly with $HOME
/// substituted for the directory prefix
fn canonical_cargo_home() -> Result<String> {
let path = try!(utils::cargo_home());
let mut path_str = path.to_string_lossy().to_string();
let default_cargo_home = utils::home_dir().unwrap_or(PathBuf::from(".")).join(".cargo");
if default_cargo_home == path {
if cfg!(unix) {
path_str = String::from("$HOME/.cargo");
} else {
path_str = String::from(r"%USERPROFILE%\.cargo");
}
}
Ok(path_str)
}
/// Installing is a simple matter of coping the running binary to
/// `CARGO_HOME`/bin, hardlinking the various Rust tools to it,
/// and adding `CARGO_HOME`/bin to PATH.
pub fn install(no_prompt: bool, verbose: bool,
mut opts: InstallOpts) -> Result<()> {
try!(do_pre_install_sanity_checks());
try!(check_existence_of_rustc_or_cargo_in_path(no_prompt));
try!(do_anti_sudo_check(no_prompt));
if !try!(do_msvc_check(&opts)) {
if no_prompt {
warn!("installing msvc toolchain without its prerequisites");
} else {
term2::stdout().md(MSVC_MESSAGE);
if !try!(common::confirm("\nContinue? (Y/n)", true)) {
info!("aborting installation");
return Ok(());
}
}
}
if !no_prompt {
let ref msg = try!(pre_install_msg(opts.no_modify_path));
term2::stdout().md(msg);
loop {
term2::stdout().md(current_install_opts(&opts));
match try!(common::confirm_advanced()) {
Confirm::No => {
info!("aborting installation");
return Ok(());
},
Confirm::Yes => {
break;
},
Confirm::Advanced => {
opts = try!(customize_install(opts));
}
}
}
}
let install_res: Result<()> = (|| {
try!(cleanup_legacy());
try!(install_bins());
if !opts.no_modify_path {
try!(do_add_to_path(&get_add_path_methods()));
}
// Create ~/.rustup and a compatibility ~/.multirust symlink.
// FIXME: Someday we can stop setting up the symlink, and when
// we do that we can stop creating ~/.rustup as well.
try!(utils::create_rustup_home());
try!(maybe_install_rust(&opts.default_toolchain, &opts.default_host_triple, verbose));
if cfg!(unix) {
let ref env_file = try!(utils::cargo_home()).join("env");
let ref env_str = format!(
"{}\n",
try!(shell_export_string()));
try!(utils::write_file("env", env_file, env_str));
}
Ok(())
})();
if let Err(ref e) = install_res {
common::report_error(e);
// On windows, where installation happens in a console
// that may have opened just for this purpose, give
// the user an opportunity to see the error before the
// window closes.
if cfg!(windows) && !no_prompt {
println!("");
println!("Press the Enter key to continue.");
try!(common::read_line());
}
process::exit(1);
}
// More helpful advice, skip if -y
if !no_prompt {
let cargo_home = try!(canonical_cargo_home());
let msg = if !opts.no_modify_path {
if cfg!(unix) {
format!(post_install_msg_unix!(),
cargo_home = cargo_home)
} else {
format!(post_install_msg_win!(),
cargo_home = cargo_home)
}
} else {
if cfg!(unix) {
format!(post_install_msg_unix_no_modify_path!(),
cargo_home = cargo_home)
} else {
format!(post_install_msg_win_no_modify_path!(),
cargo_home = cargo_home)
}
};
term2::stdout().md(msg);
// On windows, where installation happens in a console
// that may have opened just for this purpose, require
// the user to press a key to continue.
if cfg!(windows) {
println!("");
println!("Press the Enter key to continue.");
try!(common::read_line());
}
}
Ok(())
}
fn rustc_or_cargo_exists_in_path() -> Result<()> {
// Ignore rustc and cargo if present in $HOME/.cargo/bin or a few other directories
fn ignore_paths(path: &PathBuf) -> bool {
!path.components().any(|c| c == Component::Normal(".cargo".as_ref())) &&
!path.components().any(|c| c == Component::Normal(".multirust".as_ref()))
}
if let Some(paths) = env::var_os("PATH") {
let paths = env::split_paths(&paths).filter(ignore_paths);
for path in paths {
let rustc = path.join(format!("rustc{}", EXE_SUFFIX));
let cargo = path.join(format!("cargo{}", EXE_SUFFIX));
if rustc.exists() || cargo.exists() {
return Err(path.to_str().unwrap().into());
}
}
}
Ok(())
}
fn check_existence_of_rustc_or_cargo_in_path(no_prompt: bool) -> Result<()> {
// Only the test runner should set this
let skip_check = env::var_os("RUSTUP_INIT_SKIP_PATH_CHECK");
// Ignore this check if called with no prompt (-y) or if the environment variable is set
if no_prompt || skip_check == Some("yes".into()) {
return Ok(());
}
if let Err(path) = rustc_or_cargo_exists_in_path() {
err!("it looks like you have an existing installation of Rust at:");
err!("{}", path);
err!("rustup cannot be installed alongside Rust. Please uninstall first");
err!("if this is what you want, restart the installation with `-y'");
Err("cannot install while Rust is installed".into())
} else {
Ok(())
}
}
fn do_pre_install_sanity_checks() -> Result<()> {
let multirust_manifest_path
= PathBuf::from("/usr/local/lib/rustlib/manifest-multirust");
let rustc_manifest_path
= PathBuf::from("/usr/local/lib/rustlib/manifest-rustc");
let uninstaller_path
= PathBuf::from("/usr/local/lib/rustlib/uninstall.sh");
let multirust_meta_path
= env::home_dir().map(|d| d.join(".multirust"));
let multirust_version_path
= multirust_meta_path.as_ref().map(|p| p.join("version"));
let rustup_sh_path
= env::home_dir().map(|d| d.join(".rustup"));
let rustup_sh_version_path = rustup_sh_path.as_ref().map(|p| p.join("rustup-version"));
let multirust_exists =
multirust_manifest_path.exists() && uninstaller_path.exists();
let rustc_exists =
rustc_manifest_path.exists() && uninstaller_path.exists();
let rustup_sh_exists =
rustup_sh_version_path.map(|p| p.exists()) == Some(true);
let old_multirust_meta_exists = if let Some(ref multirust_version_path) = multirust_version_path {
multirust_version_path.exists() && {
let version = utils::read_file("old-multirust", multirust_version_path);
let version = version.unwrap_or(String::new());
let version = version.parse().unwrap_or(0);
let cutoff_version = 12; // First rustup version
version < cutoff_version
}
} else {
false
};
match (multirust_exists, old_multirust_meta_exists) {
(true, false) => {
warn!("it looks like you have an existing installation of multirust");
warn!("rustup cannot be installed alongside multirust");
warn!("run `{}` as root to uninstall multirust before installing rustup", uninstaller_path.display());
return Err("cannot install while multirust is installed".into());
}
(false, true) => {
warn!("it looks like you have existing multirust metadata");
warn!("rustup cannot be installed alongside multirust");
warn!("delete `{}` before installing rustup", multirust_meta_path.expect("").display());
return Err("cannot install while multirust is installed".into());
}
(true, true) => {
warn!("it looks like you have an existing installation of multirust");
warn!("rustup cannot be installed alongside multirust");
warn!("run `{}` as root and delete `{}` before installing rustup", uninstaller_path.display(), multirust_meta_path.expect("").display());
return Err("cannot install while multirust is installed".into());
}
(false, false) => ()
}
if rustc_exists {
warn!("it looks like you have an existing installation of Rust");
warn!("rustup cannot be installed alongside Rust. Please uninstall first");
warn!("run `{}` as root to uninstall Rust", uninstaller_path.display());
return Err("cannot install while Rust is installed".into());
}
if rustup_sh_exists {
warn!("it looks like you have existing rustup.sh metadata");
warn!("rustup cannot be installed while rustup.sh metadata exists");
warn!("delete `{}` to remove rustup.sh", rustup_sh_path.expect("").display());
warn!("or, if you already rustup installed, you can run");
warn!("`rustup self update` and `rustup toolchain list` to upgrade");
warn!("your directory structure");
return Err("cannot install while rustup.sh is installed".into());
}
Ok(())
}
// If the user is trying to install with sudo, on some systems this will
// result in writing root-owned files to the user's home directory, because
// sudo is configured not to change $HOME. Don't let that bogosity happen.
#[allow(dead_code)]
fn do_anti_sudo_check(no_prompt: bool) -> Result<()> {
#[cfg(unix)]
pub fn home_mismatch() -> bool {
extern crate libc as c;
use std::env;
use std::ffi::CStr;
use std::mem;
use std::ops::Deref;
use std::ptr;
// test runner should set this, nothing else
if env::var("RUSTUP_INIT_SKIP_SUDO_CHECK").as_ref().map(Deref::deref).ok() == Some("yes") {
return false;
}
let mut buf = [0u8; 1024];
let mut pwd = unsafe { mem::uninitialized::<c::passwd>() };
let mut pwdp: *mut c::passwd = ptr::null_mut();
let rv = unsafe { c::getpwuid_r(c::geteuid(), &mut pwd, mem::transmute(&mut buf), buf.len(), &mut pwdp) };
if rv != 0 || pwdp.is_null() {
warn!("getpwuid_r: couldn't get user data");
return false;
}
let pw_dir = unsafe { CStr::from_ptr(pwd.pw_dir) }.to_str().ok();
let env_home = env::var_os("HOME");
let env_home = env_home.as_ref().map(Deref::deref);
match (env_home, pw_dir) {
(None, _) | (_, None) => false,
(Some(eh), Some(pd)) => eh != pd
}
}
#[cfg(not(unix))]
pub fn home_mismatch() -> bool {
false
}
match (home_mismatch(), no_prompt) {
(false, _) => (),
(true, false) => {
err!("$HOME differs from euid-obtained home directory: you may be using sudo");
err!("if this is what you want, restart the installation with `-y'");
process::exit(1);
},
(true, true) => {
warn!("$HOME differs from euid-obtained home directory: you may be using sudo");
}
}
Ok(())
}
// Provide guidance about setting up MSVC if it doesn't appear to be
// installed
#[cfg(windows)]
fn do_msvc_check(opts: &InstallOpts) -> Result<bool> {
// Test suite skips this since it's env dependent
if env::var("RUSTUP_INIT_SKIP_MSVC_CHECK").is_ok() {
return Ok(true);
}
use gcc::windows_registry;
let installing_msvc = opts.default_host_triple.contains("msvc");
let have_msvc = windows_registry::find_tool(&opts.default_host_triple, "cl.exe").is_some();
if installing_msvc && !have_msvc {
return Ok(false);
}
Ok(true)
}
#[cfg(not(windows))]
fn do_msvc_check(_opts: &InstallOpts) -> Result<bool> {
Ok(true)
}
fn pre_install_msg(no_modify_path: bool) -> Result<String> {
let cargo_home = try!(utils::cargo_home());
let cargo_home_bin = cargo_home.join("bin");
if !no_modify_path {
if cfg!(unix) {
let add_path_methods = get_add_path_methods();
let rcfiles = add_path_methods.into_iter()
.filter_map(|m| {
if let PathUpdateMethod::RcFile(path) = m {
Some(format!("{}", path.display()))
} else {
None
}
}).collect::<Vec<_>>();
let plural = if rcfiles.len() > 1 { "s" } else { "" };
let rcfiles = rcfiles.into_iter().map(|f| format!(" {}", f)).collect::<Vec<_>>();
let rcfiles = rcfiles.join("\n");
Ok(format!(pre_install_msg_unix!(),
cargo_home_bin = cargo_home_bin.display(),
plural = plural,
rcfiles = rcfiles))
} else {
Ok(format!(pre_install_msg_win!(),
cargo_home_bin = cargo_home_bin.display()))
}
} else {
Ok(format!(pre_install_msg_no_modify_path!(),
cargo_home_bin = cargo_home_bin.display()))
}
}
fn current_install_opts(opts: &InstallOpts) -> String {
format!(
r"Current installation options:
- ` `default host triple: `{}`
- ` `default toolchain: `{}`
- modify PATH variable: `{}`
",
opts.default_host_triple,
opts.default_toolchain,
if !opts.no_modify_path { "yes" } else { "no" }
)
}
// Interactive editing of the install options
fn customize_install(mut opts: InstallOpts) -> Result<InstallOpts> {
println!(
"I'm going to ask you the value of each these installation options.\n\
You may simply press the Enter key to leave unchanged.");
println!("");
opts.default_host_triple = try!(common::question_str(
"Default host triple?",
&opts.default_host_triple));
opts.default_toolchain = try!(common::question_str(
"Default toolchain? (stable/beta/nightly/none)",
&opts.default_toolchain));
opts.no_modify_path = !try!(common::question_bool(
"Modify PATH variable? (y/n)",
!opts.no_modify_path));
Ok(opts)
}
// Before rustup-rs installed bins to $CARGO_HOME/bin it installed
// them to $RUSTUP_HOME/bin. If those bins continue to exist after
// upgrade and are on the $PATH, it would cause major confusion. This
// method silently deletes them.
fn cleanup_legacy() -> Result<()> {
let legacy_bin_dir = try!(legacy_multirust_home_dir()).join("bin");
for tool in TOOLS.iter().cloned().chain(vec!["multirust", "rustup"]) {
let ref file = legacy_bin_dir.join(&format!("{}{}", tool, EXE_SUFFIX));
if file.exists() {
try!(utils::remove_file("legacy-bin", file));
}
}
return Ok(());
#[cfg(unix)]
fn legacy_multirust_home_dir() -> Result<PathBuf> {
Ok(try!(utils::legacy_multirust_home()))
}
#[cfg(windows)]
fn legacy_multirust_home_dir() -> Result<PathBuf> {
use rustup_utils::raw::windows::{
get_special_folder, FOLDERID_LocalAppData
};
// FIXME: This looks bogus. Where is the .multirust dir?
Ok(get_special_folder(&FOLDERID_LocalAppData).unwrap_or(PathBuf::from(".")))
}
}
fn install_bins() -> Result<()> {
let ref bin_path = try!(utils::cargo_home()).join("bin");
let ref this_exe_path = try!(utils::current_exe());
let ref rustup_path = bin_path.join(&format!("rustup{}", EXE_SUFFIX));
try!(utils::ensure_dir_exists("bin", bin_path, &|_| {}));
// NB: Even on Linux we can't just copy the new binary over the (running)
// old binary; we must unlink it first.
if rustup_path.exists() {
try!(utils::remove_file("rustup-bin", rustup_path));
}
try!(utils::copy_file(this_exe_path, rustup_path));
try!(utils::make_executable(rustup_path));
install_proxies()
}
pub fn install_proxies() -> Result<()> {
let ref bin_path = try!(utils::cargo_home()).join("bin");
let ref rustup_path = bin_path.join(&format!("rustup{}", EXE_SUFFIX));
// Record the size of the known links, then when we get files which may or
// may not be links, we compare their size. Same size means probably a link.
let mut file_size = 0;
// Try to hardlink all the Rust exes to the rustup exe. Some systems,
// like Android, does not support hardlinks, so we fallback to symlinks.
for tool in TOOLS {
let ref tool_path = bin_path.join(&format!("{}{}", tool, EXE_SUFFIX));
if tool_path.exists() {
file_size = utils::file_size(tool_path)?;
}
try!(utils::hard_or_symlink_file(rustup_path, tool_path));
}
for tool in DUP_TOOLS {
let ref tool_path = bin_path.join(&format!("{}{}", tool, EXE_SUFFIX));
if tool_path.exists() && (file_size == 0 || utils::file_size(tool_path)? != file_size) {
warn!("tool `{}` is already installed, remove it from `{}`, then run `rustup update` \
to have rustup manage this tool.",
tool, bin_path.to_string_lossy());
} else {
try!(utils::hard_or_symlink_file(rustup_path, tool_path));
}
}
Ok(())
}
fn maybe_install_rust(toolchain_str: &str, default_host_triple: &str, verbose: bool) -> Result<()> {
let ref cfg = try!(common::set_globals(verbose));
// If there is already an install, then `toolchain_str` may not be
// a toolchain the user actually wants. Don't do anything. FIXME:
// This logic should be part of InstallOpts so that it isn't
// possible to select a toolchain then have it not be installed.
if toolchain_str == "none" {
info!("skipping toolchain installation");
println!("");
} else if try!(cfg.find_default()).is_none() {
// Set host triple first as it will affect resolution of toolchain_str
try!(cfg.set_default_host_triple(default_host_triple));
let toolchain = try!(cfg.get_toolchain(toolchain_str, false));
let status = try!(toolchain.install_from_dist());
try!(cfg.set_default(toolchain_str));
println!("");
try!(common::show_channel_update(cfg, toolchain_str, Ok(status)));
} else {
info!("updating existing rustup installation");
println!("");
}
Ok(())
}
pub fn uninstall(no_prompt: bool) -> Result<()> {
if NEVER_SELF_UPDATE {
err!("self-uninstall is disabled for this build of rustup");
err!("you should probably use your system package manager to uninstall rustup");
process::exit(1);
}
if cfg!(feature = "msi-installed") {
// Get the product code of the MSI installer from the registry
// and spawn `msiexec /x`, then exit immediately
let product_code = try!(get_msi_product_code());
try!(Command::new("msiexec")
.arg("/x")
.arg(product_code)
.spawn()
.chain_err(|| ErrorKind::WindowsUninstallMadness));
process::exit(0);
}
let ref cargo_home = try!(utils::cargo_home());
if !cargo_home.join(&format!("bin/rustup{}", EXE_SUFFIX)).exists() {
return Err(ErrorKind::NotSelfInstalled(cargo_home.clone()).into());
}
if !no_prompt {
println!("");
let ref msg = format!(pre_uninstall_msg!(),
cargo_home = try!(canonical_cargo_home()));
term2::stdout().md(msg);
if !try!(common::confirm("\nContinue? (y/N)", false)) {
info!("aborting uninstallation");
return Ok(());
}
}
info!("removing rustup home");
try!(utils::delete_legacy_multirust_symlink());
// Delete RUSTUP_HOME
let ref rustup_dir = try!(utils::rustup_home());
if rustup_dir.exists() {
try!(utils::remove_dir("rustup_home", rustup_dir, &|_| {}));
}
let read_dir_err = "failure reading directory";
info!("removing cargo home");
// Remove CARGO_HOME/bin from PATH
let ref remove_path_methods = try!(get_remove_path_methods());
try!(do_remove_from_path(remove_path_methods));
// Delete everything in CARGO_HOME *except* the rustup bin
// First everything except the bin directory
for dirent in try!(fs::read_dir(cargo_home).chain_err(|| read_dir_err)) {
let dirent = try!(dirent.chain_err(|| read_dir_err));
if dirent.file_name().to_str() != Some("bin") {
if dirent.path().is_dir() {
try!(utils::remove_dir("cargo_home", &dirent.path(), &|_| {}));
} else {
try!(utils::remove_file("cargo_home", &dirent.path()));
}
}
}
// Then everything in bin except rustup and tools. These can't be unlinked
// until this process exits (on windows).
let tools = TOOLS.iter().chain(DUP_TOOLS.iter()).map(|t| format!("{}{}", t, EXE_SUFFIX));
let tools: Vec<_> = tools.chain(vec![format!("rustup{}", EXE_SUFFIX)]).collect();
for dirent in try!(fs::read_dir(&cargo_home.join("bin")).chain_err(|| read_dir_err)) {
let dirent = try!(dirent.chain_err(|| read_dir_err));
let name = dirent.file_name();
let file_is_tool = name.to_str().map(|n| tools.iter().any(|t| *t == n));
if file_is_tool == Some(false) {
if dirent.path().is_dir() {
try!(utils::remove_dir("cargo_home", &dirent.path(), &|_| {}));
} else {
try!(utils::remove_file("cargo_home", &dirent.path()));
}
}
}
info!("removing rustup binaries");
// Delete rustup. This is tricky because this is *probably*
// the running executable and on Windows can't be unlinked until
// the process exits.
try!(delete_rustup_and_cargo_home());
info!("rustup is uninstalled");
process::exit(0);
}
#[cfg(not(feature = "msi-installed"))]
fn get_msi_product_code() -> Result<String> {
unreachable!()
}
#[cfg(feature = "msi-installed")]
fn get_msi_product_code() -> Result<String> {
use winreg::RegKey;
use winapi::*;
let root = RegKey::predef(HKEY_CURRENT_USER);
let environment = root.open_subkey_with_flags("SOFTWARE\\rustup", KEY_READ);
match environment {
Ok(env) => {
match env.get_value("InstalledProductCode") {
Ok(val) => {
Ok(val)
}
Err(e) => {
Err(e).chain_err(|| ErrorKind::WindowsUninstallMadness)
}
}
}
Err(e) => {
Err(e).chain_err(|| ErrorKind::WindowsUninstallMadness)
}
}
}
#[cfg(unix)]
fn delete_rustup_and_cargo_home() -> Result<()> {
let ref cargo_home = try!(utils::cargo_home());
try!(utils::remove_dir("cargo_home", cargo_home, &|_| ()));
Ok(())
}
// The last step of uninstallation is to delete *this binary*,
// rustup.exe and the CARGO_HOME that contains it. On Unix, this
// works fine. On Windows you can't delete files while they are open,
// like when they are running.
//
// Here's what we're going to do:
// - Copy rustup to a temporary file in
// CARGO_HOME/../rustup-gc-$random.exe.
// - Open the gc exe with the FILE_FLAG_DELETE_ON_CLOSE and
// FILE_SHARE_DELETE flags. This is going to be the last
// file to remove, and the OS is going to do it for us.
// This file is opened as inheritable so that subsequent
// processes created with the option to inherit handles
// will also keep them open.
// - Run the gc exe, which waits for the original rustup
// process to close, then deletes CARGO_HOME. This process
// has inherited a FILE_FLAG_DELETE_ON_CLOSE handle to itself.
// - Finally, spawn yet another system binary with the inherit handles
// flag, so *it* inherits the FILE_FLAG_DELETE_ON_CLOSE handle to
// the gc exe. If the gc exe exits before the system exe then at
// last it will be deleted when the handle closes.
//
// This is the DELETE_ON_CLOSE method from
// http://www.catch22.net/tuts/self-deleting-executables
//
// ... which doesn't actually work because Windows won't really
// delete a FILE_FLAG_DELETE_ON_CLOSE process when it exits.
//
// .. augmented with this SO answer
// http://stackoverflow.com/questions/10319526/understanding-a-self-deleting-program-in-c
#[cfg(windows)]
fn delete_rustup_and_cargo_home() -> Result<()> {
use rand;
use scopeguard;
use std::thread;
use std::time::Duration;
// CARGO_HOME, hopefully empty except for bin/rustup.exe
let ref cargo_home = try!(utils::cargo_home());
// The rustup.exe bin
let ref rustup_path = cargo_home.join(&format!("bin/rustup{}", EXE_SUFFIX));
// The directory containing CARGO_HOME
let work_path = cargo_home.parent().expect("CARGO_HOME doesn't have a parent?");
// Generate a unique name for the files we're about to move out
// of CARGO_HOME.
let numbah: u32 = rand::random();
let gc_exe = work_path.join(&format!("rustup-gc-{:x}.exe", numbah));
use winapi::{FILE_SHARE_DELETE, FILE_SHARE_READ,
INVALID_HANDLE_VALUE, FILE_FLAG_DELETE_ON_CLOSE,
DWORD, SECURITY_ATTRIBUTES, OPEN_EXISTING,
GENERIC_READ};
use kernel32::{CreateFileW, CloseHandle};
use std::os::windows::ffi::OsStrExt;
use std::ptr;
use std::io;
use std::mem;
unsafe {
// Copy rustup (probably this process's exe) to the gc exe
try!(utils::copy_file(rustup_path, &gc_exe));
let mut gc_exe_win: Vec<_> = gc_exe.as_os_str().encode_wide().collect();
gc_exe_win.push(0);
// Open an inheritable handle to the gc exe marked
// FILE_FLAG_DELETE_ON_CLOSE. This will be inherited
// by subsequent processes.
let mut sa = mem::zeroed::<SECURITY_ATTRIBUTES>();
sa.nLength = mem::size_of::<SECURITY_ATTRIBUTES>() as DWORD;
sa.bInheritHandle = 1;
let gc_handle = CreateFileW(gc_exe_win.as_ptr(),
GENERIC_READ,
FILE_SHARE_READ | FILE_SHARE_DELETE,
&mut sa,
OPEN_EXISTING,
FILE_FLAG_DELETE_ON_CLOSE,
ptr::null_mut());
if gc_handle == INVALID_HANDLE_VALUE {
let err = io::Error::last_os_error();
return Err(err).chain_err(|| ErrorKind::WindowsUninstallMadness);
}
let _g = scopeguard::guard(gc_handle, |h| { let _ = CloseHandle(*h); });
try!(Command::new(gc_exe).spawn()
.chain_err(|| ErrorKind::WindowsUninstallMadness));
// The catch 22 article says we must sleep here to give
// Windows a chance to bump the processes file reference
// count. acrichto though is in disbelief and *demanded* that
// we not insert a sleep. If Windows failed to uninstall
// correctly it is because of him.
// (.. and months later acrichto owes me a beer).
thread::sleep(Duration::from_millis(100));
}
Ok(())
}
/// Run by rustup-gc-$num.exe to delete CARGO_HOME
#[cfg(windows)]
pub fn complete_windows_uninstall() -> Result<()> {
use std::ffi::OsStr;
use std::process::Stdio;
try!(wait_for_parent());
// Now that the parent has exited there are hopefully no more files open in CARGO_HOME
let ref cargo_home = try!(utils::cargo_home());
try!(utils::remove_dir("cargo_home", cargo_home, &|_| ()));
// Now, run a *system* binary to inherit the DELETE_ON_CLOSE
// handle to *this* process, then exit. The OS will delete the gc
// exe when it exits.
let rm_gc_exe = OsStr::new("net");
try!(Command::new(rm_gc_exe)
.stdin(Stdio::null())
.stdout(Stdio::null())
.stderr(Stdio::null())
.spawn()
.chain_err(|| ErrorKind::WindowsUninstallMadness));
process::exit(0);
}
#[cfg(windows)]
fn wait_for_parent() -> Result<()> {
use kernel32::{Process32First, Process32Next,
CreateToolhelp32Snapshot, CloseHandle, OpenProcess,
GetCurrentProcessId, WaitForSingleObject};
use winapi::{PROCESSENTRY32, INVALID_HANDLE_VALUE, DWORD, INFINITE,
TH32CS_SNAPPROCESS, SYNCHRONIZE, WAIT_OBJECT_0};
use std::io;
use std::mem;
use std::ptr;
use scopeguard;
unsafe {
// Take a snapshot of system processes, one of which is ours
// and contains our parent's pid
let snapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
if snapshot == INVALID_HANDLE_VALUE {
let err = io::Error::last_os_error();
return Err(err).chain_err(|| ErrorKind::WindowsUninstallMadness);
}