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82 lines
2.8 KiB
82 lines
2.8 KiB
// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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var assert = require('assert');
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var spawn = require('child_process').spawn;
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var fs = require('fs');
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var myUid = process.getuid();
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var myGid = process.getgid();
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if (myUid != 0) {
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console.error('must be run as root, otherwise the gid/uid setting will' +
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' fail.');
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process.exit(1);
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}
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// get a different user.
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// don't care who it is, as long as it's not root
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var passwd = fs.readFileSync('/etc/passwd', 'utf8');
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passwd = passwd.trim().split(/\n/);
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for (var i = 0, l = passwd.length; i < l; i++) {
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if (passwd[i].charAt(0) === '#') continue;
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passwd[i] = passwd[i].split(':');
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var otherName = passwd[i][0];
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var otherUid = +passwd[i][2];
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var otherGid = +passwd[i][3];
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if (otherUid && otherUid !== myUid &&
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otherGid && otherGid !== myGid &&
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otherUid > 0) {
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break;
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}
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}
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if (!otherUid && !otherGid) throw new Error('failed getting passwd info.');
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console.error('name, id, gid = %j', [otherName, otherUid, otherGid]);
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var whoNumber = spawn('id', [], { uid: otherUid, gid: otherGid });
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var whoName = spawn('id', [], { uid: otherName, gid: otherGid });
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whoNumber.stdout.buf = 'byNumber:';
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whoName.stdout.buf = 'byName:';
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whoNumber.stdout.on('data', onData);
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whoName.stdout.on('data', onData);
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function onData(c) { this.buf += c; }
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whoNumber.on('exit', onExit);
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whoName.on('exit', onExit);
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function onExit(code) {
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var buf = this.stdout.buf;
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console.log(buf);
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var expr = new RegExp('^(byName|byNumber):uid=' +
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otherUid +
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'\\(' +
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otherName +
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'\\) gid=' +
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otherGid +
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'\\(');
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assert.ok(buf.match(expr), 'uid and gid should match ' + otherName);
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}
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