def getfiles(host, filelist, destdir, hashlist=[""], prog_indicator=0, createhashfile=False):
""" stub for the old getfiles to convert parameters to getfiles1
XXX this will go away soon
"""
if hashlist == [""]:
hashlist = None
if hashlist != None and len(hashlist) != len(filelist):
arizonareport.send_syslog(arizonareport.ERR, "getfiles(): The number of files given doesn't match the number of hashes given.")
return (False, downloaded_files)
tuples = []
for (i,file) in enumerate(filelist):
if hashlist:
hash = hashlist[i]
else:
hash = None
dict = {"filename": file}
if hash:
dict['hash'] = hash
# XXX this will be going away
dict['hashfuncs'] = [storkpackage.get_package_metadata_hash, default_hashfunc]
tuples.append(dict)
return getfiles1(host, tuples, destdir, prog_indicator, createhashfile)
def init_sharing_program():
# Check that we know who we are...
if arizonaconfig.get_option('slicename') == None:
arizonareport.send_error(0, "--slicename must be set")
arizonareport.send_syslog(arizonareport.ERR, "slicename hasn't been set")
sys.exit(1)
def __overwrite_file(filename, text):
"""
<Purpose>
Overwrites filename with the given text.
<Arguments>
filename:
File to write to.
text:
Text to write.
<Exceptions>
None.
<Side Effects>
None.
<Returns>
None.
"""
try:
out_file = open(filename, "w")
out_file.write(text)
out_file.close()
except IOError:
arizonareport.send_syslog(arizonareport.ERR, "IOError writing " + filename)
os._exit(0)
return
def mount_dir(sourcefinal, targetfinal, flags):
arizonareport.send_syslog(arizonareport.INFO, "Stork_proper: mount " + str(sourcefinal) + " " + str(targetfinal) + " " + str(flags))
#uncomment this to call via os.popen instaed of importing proper directly
#return call(["mountdir", sourcefinal, targetfinal, flags])
# import Proper.py; if it is already imported, then this is a no-op
try:
import Proper
except:
arizonareport.send_syslog(arizonareport.ERROR, "Stork_proper: failed to import Proper.py")
return False
# call proper to set the file flags
try:
output = Proper.mount_dir(sourcefinal, targetfinal, flags)
except:
arizonareport.send_syslog(arizonareport.ERROR, "Stork_proper: Exception in Proper call")
return False
if is_proper_error(output):
arizonareport.send_syslog(arizonareport.ERROR, "Stork_proper: Error")
return False
arizonareport.send_syslog(arizonareport.INFO, "Stork_proper: Success")
return True
def __handle_retrievedstatus(data):
"""
<Purpose>
Sets whether or not all files were retrieved.
<Arguments>
data:
Status: must be "true" or "false"
<Exceptions>
None.
<Side Effects>
None.
<Returns>
None.
"""
global glo_status
__report_handler("retrievedstatus", data)
data = data.strip().lower()
if data == "true":
glo_status = True
elif data == "false":
glo_status = False
else:
arizonareport.send_syslog(arizonareport.INFO, "__handle_retrievedstatus: expected `true' or `false', data:" + str(data))
arizonareport.send_error(0, "nest transfer: received unexpected __handle_retrievedstatus response:" + str(data))
__disconnect("arizonatransfer_nest.__handle_retrievedstatus: received unexpected __handle_retrievedstatus response:" + str(data))
def set_width(width):
"""
<Purpose>
Set the console width for download_indicator function.
<Arguments>
width:
maximum width of the console text on the screen
<Exceptions>
TypeError:
If the filename passed in is not a string, TypeError is raised
<Side Effects>
Assign filename passed in to glo_filename.
<Returns>
None.
"""
global glo_width
# if width is not an int, then raise TypeError.
if not isinstance(width, int):
arizonareport.send_syslog(arizonareport.ERR, "set_width(): 'width' is incorrect")
raise TypeError
glo_width = width
def set_filename(filename):
"""
<Purpose>
Set the file name for download_indicator function.
<Arguments>
filename:
it will be set and used for download_indicator to show the file
name on the screen.
<Exceptions>
TypeError:
If the filename passed in is not a string, TypeError is raised
<Side Effects>
Assign filename passed in to glo_filename.
<Returns>
None.
"""
# if filename is not a string, then raise TypeError.
if not isinstance(filename, str):
arizonareport.send_syslog(arizonareport.ERR, "set_filename(): 'filename' is incorrect")
raise TypeError
arizonareport.send_out_comma(0, filename + ":")
def __handle_retrieveindicator(data):
"""
<Purpose>
Sets whether or not the download indicator is displayed.
<Arguments>
data:
Indicator: must be an int (as a string)
<Exceptions>
None.
<Side Effects>
None.
<Returns>
None.
"""
global glo_retrieveindicator
storklog.log_nest("stork_nest_comm", "__handle_retrieveindicator", "start", "data", data)
__report_handler("retrieveindicator", data)
if not __identified():
storklog.log_nest("stork_nest_comm", "__handle_retrieveindicator", "end", "error", "")
return
data = data.strip()
try:
glo_retrieveindicator = int(data)
except ValueError:
arizonareport.send_syslog(arizonareport.INFO, "__handle_retrieveindicator: expected an integer value, data: `" + str(data) + "'")
arizonareport.send_error(0, "nest: retrieveindicator expected an integer value, data: `" + str(data) + "', disconnecting")
__disconnect("stork_nest_comm.__handle_retrieveindicator: retrieveindicator expected an integer value, data: `" + str(data) + "'")
storklog.log_nest("stork_nest_comm", "__handle_retrieveindicator", "end", "ok", "")
def __handle_end(data):
"""
<Purpose>
Responds to the \end command by terminating the connection.
<Arguments>
data:
Unused. # to log the time taken
time_before = time.time()
<Exceptions>
IOError if socket communications fails.
<Side Effects>
None.
<Returns>
None.
"""
storklog.log_nest("stork_nest_comm", "__handle_bindscript", "start", "data", data)
__report_handler("end", data)
arizonareport.send_syslog(arizonareport.INFO, "Client requested disconnect.")
#print "[DEBUG] client requested disconnection, disconnecting"
arizonacomm.disconnect("Client requested disconnect (sent end command)")
storklog.log_nest("stork_nest_comm", "__handle_bindscript", "end", "ok", "")
def __handle_removefile(data):
try:
os.remove(data)
arizonacomm.send("identifyready", "")
except (TypeError, IOError, OSError): #changed from catching a general exception
arizonareport.send_syslog(arizonareport.ERR, "storkidentify.__handle_removefile(): Could not remove file: `" + str(data) + "'")
arizonareport.send_error(2, "ERROR: Could not remove file: `" + str(data) + "'")
__identify_done(None)
def share_file(source_serv, source_file, dest_serv, dest_file):
"""
<Purpose>
Share a file from a source file to dest_file on dest_serv
<Arguments>
source_serv:
'source_serv' is a vserver service which a source file is shared from
'source_serv' should be a string.
source_file:
'source_file' is a file on vserver system to share from.
'source_file' should be a string.
dest_serv:
'dest_serv' is a vserver service which a source file is shared to
'dest_serv' should be a string.
dest_file:
'dest_file' is a file on vserver system to share to.
'dest_file' should be a string.
<Exceptions>
OSError:
If linking fails, then return False.
<Side Effects>
None.
<Returns>
True if sharing succeeds, otherwise False.
"""
arizonareport.send_syslog(arizonareport.ERR, "share_file(): Needs to account for source vserver correctly # JUSTIN TODO FIXME")
return False
# check all arguments are strings
if not isinstance(source, str):
arizonareport.send_syslog(arizonareport.ERR, "share_file(): source should be a string.")
return False
if not isinstance(dest_serv, str):
arizonareport.send_syslog(arizonareport.ERR, "share_file(): dest_serv should be a string.")
return False
if not isinstance(dest_file, str):
arizonareport.send_syslog(arizonareport.ERR, "share_file(): dest_file should be a string.")
return False
# this copy is based on the fact that a root directory of a dest_serv is mounted to /vservers/dest_serv
# so we can just simply use linking.
try:
os.link(source, "/vservers/"+dest_serv+"/"+dest_file)
# error occures when files don't exit or is alreay linked.
except OSError, (errno, strerror):
arizonareport.send_syslog(arizonareport.ERR, "share_file(): I/O error(" + str(errno) + "): " + str(strerror))
return False
def __handle_setactive(data):
try:
global glo_active
glo_active = data
arizonacomm.send("identifyready", "")
except (IOError, TypeError): #changed from catching a general exception
arizonareport.send_syslog(arizonareport.ERR, "storkidentify.__handle_setactive(): Could not set file: `" + str(data) + "' as the active file")
arizonareport.send_error(2, "ERROR: Could not set file: `" + str(data) + "' as the active file")
__identify_done(None)
def __handle_createdirectory(data):
global glo_active
try:
glo_active = data
os.mkdir(data)
arizonacomm.send("identifyready", "")
except (TypeError, IOError, OSError):
arizonareport.send_syslog(arizonareport.ERR, "storkidentify.__handle_createdirectory(): Could not create directory: `" + str(data) + "'")
arizonareport.send_error(2, "ERROR: Could not create directory: `" + str(data) + "'")
__identify_done(None)
def __handle_readactive(data):
try:
f = open(glo_active, "r")
data = f.read()
f.close()
arizonacomm.send("identifyready", data)
except (IOError, TypeError): #changed from catching a general exception
arizonareport.send_syslog(arizonareport.ERR, "storkidentify.__handle_readactive(): Could not read active file: `" + str(glo_active) + "'")
arizonareport.send_error(2, "ERROR: Could not read active file: `" + str(glo_active) + "'")
__identify_done(None)
def __handle_appendactive(data):
try:
f = open(glo_active, "a")
f.write(data)
f.close()
arizonacomm.send("identifyready", "")
except (TypeError, IOError): #changed from catching a general exception
arizonareport.send_syslog(arizonareport.ERR, "storkidentify.__handle_appendactive(): Could not append: `" + str(data) + "' to active file: `" + str(glo_active) + "'")
arizonareport.send_error(2, "ERROR: Could not append: `" + str(data) + "' to active file: `" + str(glo_active) + "'")
__identify_done(None)
def __handle_createfile(data):
global glo_active
try:
glo_active = data
f = open(data, "w+")
f.close()
arizonacomm.send("identifyready", "")
except (IOError, TypeError): #changed from catching a general exception
arizonareport.send_syslog(arizonareport.ERR, "storkidentify.__handle_createfile(): Could not create file: `" + str(data) + "'")
arizonareport.send_error(2, "ERROR: Could not create file: `" + str(data) + "'")
__identify_done(None)
def __handle_retrievefile(data):
"""
<Purpose>
Adds a file to the retrieve list.
<Arguments>
None.
<Exceptions>
None.
<Side Effects>
None.
<Returns>
None.
"""
global glo_retrievefiles
global glo_retrievesubdirs
__report_handler("retrievefile", data)
storklog.log_nest("stork_nest_comm", "__handle_retrievefile", "start", "data", data)
if not __identified():
storklog.log_nest("stork_nest_comm", "__handle_retrievefile", "end", "error", "")
return
# check filename
# TODO need other checks? probably a security bug here ~ . ..
if data[0] == "/" or data.find("../") != -1 or data.find("~/") != -1:
arizonareport.send_syslog(arizonareport.INFO, "__handle_retrievefile: Illegal filename path")
arizonareport.send_error(0, "nest: retrievefile detected an illegal filename path, disconnecting")
__disconnect("stork_nest_comm.__handle_retrievefile: retrievefile detected an illegal filename path")
storklog.log_nest("stork_nest_comm", "__handle_retrievefile", "end", "error", "")
return
if glo_retrievesubdirs == None:
glo_retrievesubdirs = []
# strip subdirectories from filename
clip = data.rfind("/")
if clip != -1:
# need to modify destdir to include subdirectory
glo_retrievesubdirs.append(data[: clip + 1])
# remove extra path from filename
data = data[clip + 1:]
else:
glo_retrievesubdirs.append("")
if glo_retrievefiles == None:
glo_retrievefiles = []
glo_retrievefiles.append(data)
storklog.log_nest("stork_nest_comm", "__handle_retrievefile", "end", "ok", "")
def __write_file(filename, text):
arizonageneral.check_type_simple(filename, "filename", str, "planetlab_share.__write_file")
arizonageneral.check_type_simple(text, "text", str, "planetlab_share.__write_file")
try:
thefile = open(filename, "w")
thefile.write(str(text) + '\n')
thefile.close()
except IOError:
arizonareport.send_syslog(arizonareport.ERR, "IOError writing " + filename)
return
def determine_remote_files(name, destdir, hashfuncs=[default_hashfunc], maskList=[]):
"""
<Purpose>
Cracks open a metafile, determines the names of the files referenced
from that metafile, and checks to make sure they are signed
correctly.
An unsigned metafile is assumed to exist at destdir/METAFILE_FN
<Arguments>
name:
'name' of the remote thing we're synchronizing. The only purpose
of this parameter is as text info for the user; It's suggested to
use the same name as the 'host' parameter that is supplied to
sync_remote_files(), but not absoletely necessary.
destdir:
'destdir' is a destination directory which will be synchronized.
<Exceptions>
None.
<Side Effects>
None
<Returns>
A tuple: (result, file_list)
True or False to indicate success, a list of downloaded files, and a list
of all files on the server.
"""
metafile_path = os.path.join(destdir, METAFILE_FN)
fetch_list = []
if not os.path.exists(metafile_path):
arizonareport.send_error(arizonareport.ERR, "determine_remote_files(): file " + str(metafile_path) + " does not exist")
arizonareport.send_syslog(arizonareport.ERR, "determine_remote_files(): file " + str(metafile_path) + " does not exist")
return (False, fetch_list)
mtime = os.stat(metafile_path)[ST_MTIME]
arizonareport.send_out(1, "Using metadata " + name + ", timestamp " + time.ctime(mtime))
# Open the file we just retrieved
arizonareport.send_out(4, "[DEBUG] opening " + metafile_path)
try:
dir_file = open(metafile_path)
# if a file cannot be opened
except IOError, (errno, strerror):
arizonareport.send_error(arizonareport.ERR, "determine_remote_files(): I/O error(" + str(errno) + "): " + str(strerror))
arizonareport.send_syslog(arizonareport.ERR, "determine_remote_files(): I/O error(" + str(errno) + "): " + str(strerror))
return (False, fetch_list)
def __handle_verbosity(data):
"""
<Purpose>
Handles the \verbosity command, then sends local stdout/err messages
to the client for remote display. See data argument for details.
<Arguments>
data:
New verbosity level (-1 to 4, inclusive). Default verbosity
level is -1, which is silence (no messages are sent).
Normal verbosity levels are 0=quiet to 3=very verbose.
Verbosity level 4 prints raw debug messages.
<Exceptions>
IOError if socket communications fails.
<Side Effects>
Sets arizonareport verbosity, to be used when this module prints.
Redirects/restores stdout/err
<Returns>
None.
"""
global glo_verbosity_set
storklog.log_nest("stork_nest_comm", "__handle_verbosity", "start", "data", data)
__report_handler("verbosity", data)
# check verbosity value
try:
verbosity = int(data)
if verbosity < -1 or verbosity > 4:
raise ValueError
except ValueError:
arizonareport.send_syslog(arizonareport.INFO, "__handle_verbosity: bad verbosity value `" + str(data) + "', must be from -1 to 4")
arizonareport.send_error(0, "nest: bad verbosity value `" + str(data) + "', must be from -1 to 4")
__disconnect("stork_nest_comm.__handle_verbosity: bad verbosity value `" + str(data) + "', must be from -1 to 4")
storklog.log_nest("stork_nest_comm", "__handle_verbosity", "end", "error", "")
return
if verbosity > 0 and not glo_verbosity_set and not arizonaconfig.get_option("localoutput"):
# turn on output redirection
arizonareport.redirect_stdout(arizonacomm_out())
arizonareport.redirect_stderr(arizonacomm_err())
glo_verbosity_set = True
"""elif verbosity < 0 and glo_verbosity_set:
# turn off output redirection
arizonareport.restore_stdout()
arizonareport.restore_stderr() """
arizonareport.set_verbosity(verbosity)
storklog.log_nest("stork_nest_comm", "__handle_verbosity", "end", "ok", "")
def identifyready(junk_data):
""" TODO comments """
global glo_identified
global glo_state
global glo_randdir
storklog.log_nest("planetlab_share", "identifyready", "start", "", "")
if glo_state == 0:
arizonacomm.send("createfile", glo_randdir + "/.exportdir")
glo_state = 1
elif glo_state == 1:
arizonacomm.send("appendactive", arizonaconfig.get_option("slicename") + "\n")
glo_state = 2
elif glo_state == 2:
# Try to mount their directory onto ours. If the /tmp/.../identify
# directory disappears, then they are identified, otherwise not.
__share_directory(glo_client, glo_randdir, arizonaconfig.get_option("slicename"), glo_randdir, "")
glo_identified = not os.path.exists(glo_randdir + "/identify")
# clean up...
unshare_directory(arizonaconfig.get_option("slicename"), glo_randdir)
# BUG TODO FIXME NEEDS WORK
# There is a bug that gets triggered here... Sometimes the above unmount
# call fails silently (acts like success) and then these fail. I will wrap
# in try: except OSError: until I figure out
# NOTE: I copied these comments from the previous authenticate code..
# It is possible that the bug has been fixed due to the refactoring.
try:
os.rmdir(glo_randdir + "/identify")
os.rmdir(glo_randdir)
except OSError:
arizonareport.send_syslog(arizonareport.INFO, "Triggered known BUG in identifyready()\n")
arizonareport.send_syslog(arizonareport.INFO, "BUG trying to rmdir(" + glo_randdir + "/identify)\n")
arizonareport.send_syslog(arizonareport.INFO, "BUG trying to rmdir(" + glo_randdir + ")\n")
arizonareport.send_syslog(arizonareport.INFO, "BUG Exception: " + str(sys.exc_info()[0]) + " " + str(sys.exc_info()[1]) + " " + str(sys.exc_info()[2]))
arizonareport.send_syslog(arizonareport.INFO, "End BUG ")
arizonacomm.send("removefile", glo_randdir + "/.exportdir")
glo_state = 3
elif glo_state == 3:
arizonacomm.send("removedirectory", glo_randdir)
glo_randdir = None
glo_state = 4
elif glo_state == 4:
glo_state = None
if glo_identified:
arizonacomm.send("identified", arizonaconfig.get_option("slicename"))
storklog.log_nest("planetlab_share", "identifyready", "identified", "yes", "")
else:
arizonacomm.send("identifyfailed", "")
storklog.log_nest("planetlab_share", "identifyready", "identified", "no", "")
storklog.log_nest("planetlab_share", "identifyready", "end", "ok", "")
def __verify_shared(slice):
# It's us!
if not slice or slice == arizonaconfig.get_option('slicename'):
return True
# Is there already a dir for this client
if not os.path.exists(__path(slice,"/")):
arizonareport.send_syslog(arizonareport.ERR, slice + " hasn't been shared")
return False
# We init to test (because the dir may exist but it can't be bound).
# If it isn't bound but could be then we'll bind here (not necessarily good)
return init_client(slice)
def __verify_connection(host):
"""
<Purpose>
This verifies a connection, testing a host and target directory.
<Arguments>
host:
'host' holds two things, a server name and target directory.
For example, if you want to retrieve files from '/tmp/' directory
in 'quadrus.cs.arizona.edu' server, the 'host' will be
'quadrus.cs.arizona.edu/tmp'.
<Exceptions>
urllib2.URLError:
If host name is incorrect or host is dead, then return False
urllib2.HTTPError:
If given target directory is incorrect, then return False
<Side Effects>
None.
<Returns>
True or False (see above)
"""
# split host into server name and directory
host.replace("http://","")
host.replace("ftp://","")
index = host.find('/')
# set hostname to hold only a server name
if index != -1:
hostname = host[:index]
else :
hostname = host
# checking only host
#the port number is for the odd bittorrent imports which interfere with
# the regular usage of urllib2.urlopen
checkurl = __build_url("http://"+hostname+"80", "")
# urllib2 is used since urllib doestn't offer a nice way to check the connection is valid
try :
urllib2.urlopen(checkurl)
# incorrect host name or host is dead
except urllib2.URLError, (msg):
def unlink_file(target_slice, target_file):
# Make sure the slice has bound
if not __verify_shared(target_slice):
return False
targetfinal = __path(target_slice, target_file)
arizonareport.send_syslog(arizonareport.INFO, 'Unlink a file "' + targetfinal + '"')
# TODO FIXME Below we should catch FNF, is dir, etc. errors
try:
os.unlink(targetfinal)
except OSError, (errno, strerror):
arizonareport.send_syslog(arizonareport.ERR, "OS error(%s): %s" % (errno, strerror))
return False
def share_directory(source_slice, source_dir, target_slice, target_dir, flags):
"""
<Purpose>
Share a directory between two slices. It uses Proper.py in planetlab
servers. It assumes that source_slice and target_slice have both bound.
If this is not the case, use __share_directory instead.
<Arguments>
source_slice:
A slice name that you want to share a directory to.
source_dir:
Directory that you want to share.
target_slice:
A slice name that you want to share a directory to.
target_dir:
Directory to which you want to share source_dir.
flags:
If it is not empty string, then share a directory with protection.
<Exceptions>
OSError:
If it fails to create directories.
<Side Effects>
None.
<Returns>
True if it succeeds to share, otherwise return False.
"""
# Make sure the slices have bound
if not __verify_shared(source_slice):
return False
if not __verify_shared(target_slice):
return False
# Create the source dir if missing
if not os.path.exists(__path(source_slice, "/" + source_dir)):
try:
os.makedirs(__path(source_slice, "/" + source_dir))
except OSError, (errno, strerror):
arizonareport.send_syslog(arizonareport.ERR, "OS error(%s): %s" % (errno, strerror))
return False
def link_file(source_slice, source_file, target_slice, target_file, verify_same):
if not __verify_shared(source_slice):
return False
if not __verify_shared(target_slice):
return False
# Find out where things should be placed
sourcefinal = __path(source_slice,source_file)
targetfinal = __path(target_slice,target_file)
# TODO FIXME create destdir if it doesn't exist???
arizonareport.send_syslog(arizonareport.INFO, 'Link a file "' + sourcefinal + '" to "' + targetfinal + '"')
try:
storklog.log_nest("planetlab_share", "link_file", "file-hash-size", "", sourcefinal + " " + str(os.path.getsize(sourcefinal)))
except:
pass
# Is the source valid?
if not arizonageneral.valid_fn(__path(source_slice,source_file)):
arizonareport.send_syslog(arizonareport.ERR, "In planetlab_share.link_file, '"+sourcefinal+"' is invalid")
return False
if verify_same:
# verify_same is used by stork_prepare to only link files that are
# identical. A different file is not an error so do not return False. We
# want to return True so that arizona_share continues to link the other
# files in the package.
# can't be the same if the target doesn't exist
if not os.path.exists(targetfinal):
return True
if not filecmp.cmp(sourcefinal, targetfinal):
return True
# If it exists, remove and relink because os.link fails if the target exists...
if os.path.exists(targetfinal):
if os.path.isfile(targetfinal):
os.unlink(targetfinal)
else:
arizonareport.send_syslog(arizonareport.ERR, "In planetlab_share.link_file, '"+targetfinal+"' exists and is not a file")
return False
# Check for the dir and create if missing
if not os.path.exists(os.path.dirname(targetfinal)):
os.makedirs(os.path.dirname(targetfinal))
try:
os.link(sourcefinal, targetfinal)
except OSError, (errno, strerror):
arizonareport.send_syslog(arizonareport.ERR, \
"planetlab_share.link_file('" + sourcefinal + "','" + \
targetfinal + "') OS error(%s): %s" % (errno, strerror))
return False
def __verify_connection(host):
"""
<Purpose>
This verifies a connection, testing a host, username, password, port
<Arguments>
host:
'host' holds two things, a server name and target directory.
For example, if you want to retrieve files from '/tmp/' directory
in 'quadrus.cs.arizona.edu' server, the 'host' will be
'quadrus.cs.arizona.edu/tmp'.
<Exceptions>
URLError:
If host name is incorrect or host is dead, then return False
IOError:
If given username, password, port, or target directory is
incorrect, then return False
<Side Effects>
None.
<Returns>
True or False (see above)
"""
# split host into server name and directory
index = host.find('/')
# set hostname to hold only a server name
if index != -1:
hostname = host[:index]
else :
hostname = host
# checking only host
checkurl = __build_url(hostname, "")
# urllib2 is used since urllib doestn't offer a nice way to check the connection is valid
try :
urllib2.urlopen(checkurl)
# incorrect host name or host is dead
except urllib2.URLError, (msg):
arizonareport.send_syslog(arizonareport.ERR, '__verify_connection(): "' + hostname + '" '+ str(msg).split("'")[1])
return False
def __verify_connection(host):
"""
<Purpose>
This verifies a connection, testing a host and target directory.
<Arguments>
host:
'host' holds two things, a server name and target directory.
For example, if you want to retrieve files from '/tmp/' directory
in 'quadrus.cs.arizona.edu' server, the 'host' will be
'quadrus.cs.arizona.edu/tmp'.
<Exceptions>
None.
<Side Effects>
None.
<Returns>
True or False (see above)
"""
# split host into server name and directory
#this could potentially be bad:(eg: http://quadrus.cs.arizona.edu/PlanetLab/...
# would return http:
#index = host.find('/')
thost=host.replace("http://","")
thost=thost.replace("ftp://","")
index=thost.find("/")
# set hostname to hold only a server name
if index != -1:
hostname = thost[:index]
else :
hostname = host
# checking only host
checkurl = __build_url(hostname, "")
# urllib2 is used since urllib doestn't offer a nice way to check the connection is valid
try :
urllib2.urlopen(checkurl)
# incorrect host name or host is dead
except urllib2.URLError, (msg):
arizonareport.send_syslog(arizonareport.ERR, '__verify_connection(): "' + hostname + '" '+ str(msg).split("'")[1])
return False
def __report_handler(name, data):
"""
<Purpose>
Syslogs the connection, handler name, and data.
<Arguments>
None.
<Exceptions>
None.
<Side Effects>
None.
<Returns>
None.
"""
arizonareport.send_syslog(arizonareport.INFO, "[" + glo_connection + "] Handling " + name + ", data: `" + data + "'")
def __report_handler(name, data):
"""
<Purpose>
Syslogs the connection, handler name, and data.
<Arguments>
None.
<Exceptions>
None.
<Side Effects>
None.
<Returns>
None.
"""
arizonareport.send_syslog(arizonareport.INFO, "[" + arizonaconfig.get_option("transhost") + ":" + str(arizonaconfig.get_option("transport")) + "] Handling " + name + ", data: `" + data + "'")
