Initial commit
Sven Slootweg
12 years ago
commit
aaa3b1a6ec
@ -0,0 +1,122 @@
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#!/usr/bin/env python
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import os, sys, pwd, glob, setuplib, subprocess
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def get_uid_gid():
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try:
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target_user = pwd.getpwnam("pylsa")
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except KeyError, e:
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raise Exception("The PyLSA installation appears to have been corrupted.")
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return (target_user[2], target_user[3])
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def switch_user():
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target_uid, target_gid = get_uid_gid()
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os.setgid(target_gid)
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os.setuid(target_uid)
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def install(as_root=False):
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try:
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target_uid, target_gid = get_uid_gid()
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except Exception, e:
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target_uid, target_gid = (-1, -1)
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if as_root == True:
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target_path = "/home/pylsa/.pylsa"
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else:
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target_path = os.path.expanduser("~/.pylsa")
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setuplib.create_directory(target_path, True, target_uid, target_gid)
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setuplib.copy_file("src/daemon.py", "%s/daemon.py" % target_path, False, target_uid, target_gid)
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setuplib.copy_file("pylsa.conf", "%s/pylsa.conf" % target_path, True, target_uid, target_gid)
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subprocess.call(["tar", "-xzf", "psutil-0.6.1.tar.gz"])
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os.chdir("psutil-0.6.1")
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stfu = open("/dev/null", "w")
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if subprocess.call(["python", "setup.py", "build"], stdout=stfu, stderr=stfu) != 0:
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sys.stderr.write("An error occurred during compilation.\n")
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exit(1)
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try:
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build_dir = glob.glob("build/lib.*")[0]
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except IndexError, e:
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sys.stderr.write("Compilation appears to have failed, exiting...\n")
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exit(1)
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setuplib.copy_directory(build_dir, "%s/lib" % target_path, False, target_uid, target_gid)
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def add_user(uname):
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# Lock /etc/passwd and /etc/group so we can safely add a user.
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open("/etc/passwd.lock", "w").close()
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open("/etc/group.lock", "w").close()
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# Find highest non-reserved UID in the user list
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passwd = open("/etc/passwd", "r+")
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highest_uid = 1000
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for line in passwd:
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username, password, uid, gid, name, homedir, shell = line.split(":")
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if username == uname:
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return True
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if int(uid) < 32000 and int(uid) > highest_uid:
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highest_uid = int(uid)
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new_uid = highest_uid + 1
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# Find highest non-reserved GID in the group list - we will assume same restrictions as for UID
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grp = open("/etc/group", "r+")
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highest_gid = 1000
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for line in grp:
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groupname, password, gid, users = line.split(":")
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if groupname == uname:
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return True
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if int(gid) < 32000 and int(gid) > highest_gid:
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highest_gid = int(gid)
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new_gid = highest_gid + 1
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# Append new user and group
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passwd.seek(0, 2)
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grp.seek(0, 2)
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setuplib.create_directory("/home/%s" % uname, True, new_uid, new_gid, "u+rwx g+rx")
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passwd.write("%s::%d:%d::/home/cvm:/bin/false\n" % (uname, new_uid, new_gid))
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grp.write("%s::%d:\n" % (uname, new_gid))
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# We're done with /etc/passwd and /etc/group
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passwd.close()
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grp.close()
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# Remove the locks on /etc/passwd and /etc/group
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os.remove("/etc/passwd.lock")
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os.remove("/etc/group.lock")
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return True
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if os.getuid() == 0:
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# Script is run as root
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if os.path.isdir("/home/pylsa/.pylsa"):
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# Already installed, run as pylsa user
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switch_user()
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exit(subprocess.call(["python", "/home/pylsa/.pylsa/daemon.py"]))
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else:
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# Not installed yet, install as pylsa user then run
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add_user("pylsa")
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install(True)
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switch_user()
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exit(subprocess.call(["python", "/home/pylsa/.pylsa/daemon.py"]))
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else:
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# Script is run as unprivileged user
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if os.path.isdir(os.path.expanduser("~/.pylsa")):
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# Already installed
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exit(subprocess.call(["python", os.path.expanduser("~/.pylsa/daemon.py")]))
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else:
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# Not installed yet
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install(False)
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exit(subprocess.call(["python", os.path.expanduser("~/.pylsa/daemon.py")]))
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Binary file not shown.
@ -0,0 +1 @@
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@ -0,0 +1,148 @@
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import stat, os, shutil, urllib, subprocess
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from itertools import dropwhile
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def create_directory(path, ignore_failure=True, uid=-1, gid=-1, modes=""):
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try:
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os.makedirs(path)
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except OSError, e:
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if ignore_failure:
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pass
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else:
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raise
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if uid != -1 or gid != -1:
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os.chown(path, uid, gid)
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if modes != "":
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set_modes(path, modes)
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def copy_file(source, destination, ignore_failure=True, uid=-1, gid=-1, modes=""):
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if ignore_failure == False:
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if os.path.exists(destination):
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raise Exception("Destination path already exists.")
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try:
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shutil.copy(source, destination)
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except IOError, e:
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if ignore_failure:
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pass
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else:
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raise
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if uid != -1 or gid != -1:
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os.chown(destination, uid, gid)
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if modes != "":
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set_modes(destination, modes)
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def copy_directory(source, destination, ignore_failure=True, uid=-1, gid=-1, modes=""):
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if ignore_failure == False:
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if os.path.exists(destination):
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raise Exception("Destination path already exists.")
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try:
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shutil.copytree(source, destination)
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except IOError, e:
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if ignore_failure:
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pass
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else:
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raise
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if uid != -1 or gid != -1:
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os.chown(destination, uid, gid)
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if modes != "":
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set_modes(destination, modes)
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def create_file(path, contents="", uid=-1, gid=-1, modes=""):
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f = open(path, "w")
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if contents != "":
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f.write(contents)
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f.close()
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if uid != -1 or gid != -1:
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os.chown(path, uid, gid)
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if modes != "":
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set_modes(path, modes)
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def set_modes(path, modes):
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mode_map = {
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"u": {
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"r": stat.S_IRUSR,
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"w": stat.S_IWUSR,
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"x": stat.S_IXUSR
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},
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"g": {
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"r": stat.S_IRGRP,
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"w": stat.S_IWGRP,
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"x": stat.S_IXGRP
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},
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"o": {
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"r": stat.S_IROTH,
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"w": stat.S_IWOTH,
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"x": stat.S_IXOTH
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}
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}
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chunks = modes.split(" ")
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mode = 0
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for chunk in chunks:
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usertype, changes = chunk.split("+")
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if usertype in mode_map:
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for change in list(changes):
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if change in mode_map[usertype]:
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mode = mode | mode_map[usertype][change]
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else:
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raise Exception("Unknown permission in modes specification.")
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elif usertype == "a":
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for change in list(changes):
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for i in mode_map:
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if change in mode_map[i]:
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mode = mode | mode_map[i][change]
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else:
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raise Exception("Unknown user type in modes specification.")
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os.chmod(path, mode)
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def download_file(name, mirrors):
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try:
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file_mirrors = mirrors[name]
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except KeyError, e:
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raise Exception("No such file exists in the mirror list.")
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for url in file_mirrors:
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try:
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urllib.urlretrieve(url, name)
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except:
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continue
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else:
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return name
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raise Exception("No functional mirrors found for this file.")
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def install_rpm(path):
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stfu = open("/dev/null", "wb")
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result = subprocess.call(["yum", "--nogpgcheck", "install", "-y", path], stdout=stfu, stderr=stfu)
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stfu.close()
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if result != 0:
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raise Exception("Failed to install package.")
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def install_remote_rpm(name, mirrors):
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download_file(name, mirrors)
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install_rpm(name)
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def rindex(lst, item):
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# http://stackoverflow.com/a/6892096/1332715
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try:
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return dropwhile(lambda x: lst[x].strip() != item, reversed(xrange(len(lst)))).next()
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except StopIteration:
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raise ValueError, "rindex(lst, item): item not in list"
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@ -0,0 +1,135 @@
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import sys, os, json
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from datetime import datetime
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# We need to set both the Python module path and system environment path, to make sure that the daemon
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# can find both the psutil library and its compiled libraries.
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sys.path.insert(0, "%s/lib" % os.path.split(os.path.realpath(__file__))[0])
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os.environ['PATH'] = "%s/lib:%s" % (os.path.split(os.path.realpath(__file__))[0], os.environ['PATH'])
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import psutil
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import urlparse
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import SocketServer, SimpleHTTPServer
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bind_ip = ""
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port = 8081
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def generate_stats(get_processes):
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listed_filesystems = ["ext2", "ext3", "ext4", "reiserfs", "removable", "fixed", "simfs"]
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mem = psutil.virtual_memory()
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swap = psutil.swap_memory()
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disks = {}
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for disk in psutil.disk_partitions(True):
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if disk.fstype in listed_filesystems:
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usage = psutil.disk_usage(disk.mountpoint)
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disks[disk.mountpoint] = {
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"device": disk.device,
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"options": disk.opts,
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"filesystem": disk.fstype,
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"total": usage.total,
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"free": usage.free
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}
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return_data = {
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"uptime": (datetime.now() - datetime.fromtimestamp(psutil.BOOT_TIME)).total_seconds(),
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"memory": {
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"total": mem.total,
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"available": mem.available,
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"used": mem.used,
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"unused": mem.free
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},
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"swap": {
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"total": swap.total,
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"used": swap.used,
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"unused": swap.free,
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"in": swap.sin,
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"out": swap.sout
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},
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"disk": disks,
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"cpu": psutil.cpu_percent(percpu=True)
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}
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if get_processes:
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processes = []
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for proc in psutil.process_iter():
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try:
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cwd = proc.getcwd()
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except psutil.AccessDenied, e:
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cwd = None
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processes.append({
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"pid": proc.pid,
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"parent": proc.ppid,
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"name": proc.name,
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"command": proc.cmdline,
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"user": proc.username,
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"status": str(proc.status), # If we don't explicitly use str() here, json module will get confused
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"cwd": cwd,
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"cpu": proc.get_cpu_percent(interval=0.1),
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"rss": proc.get_memory_info()[0]
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})
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return_data['process'] = processes
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return return_data
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class StatsHandler(SimpleHTTPServer.SimpleHTTPRequestHandler):
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def do_GET(self):
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req = urlparse.urlparse(self.path)
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get_params = urlparse.parse_qs(req.query)
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path = req.path
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try:
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get_processes = (get_params['processes'][0] == "1")
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except:
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get_processes = False
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if path=='/':
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self.send_response(200)
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self.send_header('Content-type','text/json')
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self.end_headers()
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self.wfile.write(json.dumps(generate_stats(get_processes)))
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return
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else:
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self.send_response(404)
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self.send_header('Content-type','text/plain')
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self.end_headers()
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self.wfile.write("404 Not Found")
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return
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#### Hacky way to daemonize the whole thing
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# Fork away
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if os.fork(): exit(0)
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os.umask(0)
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os.setsid()
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if os.fork(): exit(0)
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# Write PID to file
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outfile = open("pylsa.pid", "w")
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outfile.write('%i' % os.getpid())
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outfile.close()
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# Bind the server
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httpd = SocketServer.ThreadingTCPServer((bind_ip, port), StatsHandler, False)
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httpd.allow_reuse_address = True
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httpd.server_bind()
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httpd.server_activate()
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# If all went well, we'll redirect streams to silence them
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sys.stdout.flush()
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sys.stderr.flush()
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si = file('/dev/null', 'r')
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so = file('/dev/null', 'a+')
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se = file('/dev/null', 'a+', 0)
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os.dup2(si.fileno(), sys.stdin.fileno())
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os.dup2(so.fileno(), sys.stdout.fileno())
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os.dup2(se.fileno(), sys.stderr.fileno())
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# Done!
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print 'Port=',port
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httpd.serve_forever()
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Reference in New Issue