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Code Issues Releases Wiki Activity

Remove pcntl/php CLI setup checks

Browse source 
Summary:
As far as I know, we never actually need `php` to be available from the web UI. I think the history here is:

  - Long ago, we checked for 'pcntl' as an extension during setup.
  - Someone had an install where 'pcntl' was available from the CLI, but not the web UI. So we switched the check to use the CLI.
  - Someone had an install where the CLI binary was php-fpm, which caused the 'pcntl' check to loop endlessly, so we added more checks.

But we don't actually need to do any of this -- when the user tries to run the daemons, they get an explicit message that they need to install pcntl already, and we never (as far as I know) try to run PHP scripts from the web UI other than the pcntl_available.php check (we only run `git`, `svn`, `hg`, `ssh-agent`, `diff`, `xhpast` and `pygmentize`, I think).

Test Plan: Thought carefully about places we might execute PHP scripts from the web UI. Looked through /scripts/ to try to identfiy anything we might execute.

Reviewers: btrahan, vrana

Reviewed By: btrahan

CC: aran

Differential Revision: https://secure.phabricator.com/D4568
This commit is contained in:
epriestley 2013-01-21 11:57:24 -08:00
parent 7137492e4a
commit d5b006b2cc
2 changed files with 0 additions and 93 deletions
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8
scripts/setup/pcntl_available.php
View file

@ -1,8 +0,0 @@
#!/usr/bin/env php
<?php
if (extension_loaded('pcntl')) {
echo "YES\n";
} else {
echo "NO\n";
}

85
src/infrastructure/PhabricatorSetup.php
View file

@ -152,93 +152,8 @@ final class PhabricatorSetup {
}
}
list($err, $stdout, $stderr) = exec_manual('which php');
if ($err) {
self::writeFailure();
self::write("Unable to locate 'php' on the command line from the web ".
"server. Verify that 'php' is in the webserver's PATH.\n".
" err: {$err}\n".
"stdout: {$stdout}\n".
"stderr: {$stderr}\n");
return;
} else {
self::write(" okay PHP binary found on the command line.\n");
$php_bin = trim($stdout);
}
// NOTE: In cPanel + suphp installs, 'php' may be the PHP CGI SAPI, not the
// PHP CLI SAPI. proc_open() will pass the environment to the child process,
// which will re-execute the webpage (causing an infinite number of
// processes to spawn). To test that the 'php' binary is safe to execute,
// we call php_sapi_name() using "env -i" to wipe the environment so it
// doesn't execute another reuqest if it's the wrong binary. We can't use
// "-r" because php-cgi doesn't support that flag.
$tmp_file = new TempFile('sapi.php');
Filesystem::writeFile($tmp_file, '<?php echo php_sapi_name();');
list($err, $stdout, $stderr) = exec_manual(
'/usr/bin/env -i %s -f %s',
$php_bin,
$tmp_file);
if ($err) {
self::writeFailure();
self::write("Unable to execute 'php' on the command line from the web ".
"server.\n".
" err: {$err}\n".
"stdout: {$stdout}\n".
"stderr: {$stderr}\n");
return;
} else {
self::write(" okay PHP is available from the command line.\n");
$sapi = trim($stdout);
if ($sapi != 'cli') {
self::writeFailure();
self::write(
"The 'php' binary on this system uses the '{$sapi}' SAPI, but the ".
"'cli' SAPI is expected. Replace 'php' with the php-cli SAPI ".
"binary, or edit your webserver configuration so the first 'php' ".
"in PATH is the 'cli' SAPI.\n\n".
"If you're running cPanel with suphp, the easiest way to fix this ".
"is to add '/usr/local/bin' before '/usr/bin' for 'env_path' in ".
"suconf.php:\n\n".
' env_path="/bin:/usr/local/bin:/usr/bin"'.
"\n\n");
return;
} else {
self::write(" okay 'php' is CLI SAPI.\n");
}
}
$root = dirname(phutil_get_library_root('phabricator'));
// On RHEL6, doing a distro install of pcntl makes it available from the
// CLI binary but not from the Apache module. This isn't entirely
// unreasonable and we don't need it from Apache, so do an explicit test
// for CLI availability.
list($err, $stdout, $stderr) = exec_manual(
'php %s',
"{$root}/scripts/setup/pcntl_available.php");
if ($err) {
self::writeFailure();
self::write("Unable to execute scripts/setup/pcntl_available.php to ".
"test for the availability of pcntl from the CLI.\n".
" err: {$err}\n".
"stdout: {$stdout}\n".
"stderr: {$stderr}\n");
return;
} else {
if (trim($stdout) == 'YES') {
self::write(" okay pcntl is available from the command line.\n");
self::write("[OKAY] All extensions OKAY\n");
} else {
self::write(" warn pcntl is not available!\n");
self::write("[WARN] *** WARNING *** pcntl extension not available. ".
"You will not be able to run daemons.\n");
}
}
self::writeHeader("GIT SUBMODULES");
if (!Filesystem::pathExists($root.'/.git')) {
self::write(" skip Not a git clone.\n\n");