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Timestamp:
Nov 20, 2008, 10:46:54 PM (16 years ago)
Author:
broder
Message:

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1 edited

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  • trunk/packages/invirt-console-server/files/usr/bin/invirt-consolefs

    r1713 r1726  
    1616
    1717class ConsoleFS(routefs.RouteFS):
    18         """
    19         ConsoleFS creates a series of subdirectories each mirroring the same real
    20         directory, except for a single file - the .k5login - which is dynamically
    21         generated for each subdirectory
    22         """
    23        
    24         def __init__(self, *args, **kw):
    25                 """Initialize the filesystem and set it to allow_other access besides
    26                 the user who mounts the filesystem (i.e. root)
    27                 """
    28                 super(ConsoleFS, self).__init__(*args, **kw)
    29                 self.lasttime = 0
    30                 self.machines = []
    31                 self.fuse_args.add("allow_other", True)
    32                
    33                 openlog('invirt-consolefs ', LOG_PID, LOG_DAEMON)
    34                
    35                 syslog(LOG_DEBUG, 'Init complete.')
    36        
    37         def make_map(self):
    38                 m = Mapper()
    39                 m.connect('', controller='getMachines')
    40                 m.connect(':machine', controller='getMirror')
    41                 m.connect(':machine/.k5login', controller='getK5login')
    42                 m.connect(':machine/*(path)', controller='getMirror')
    43                 return m
    44        
    45         def recache(self):
    46                 if time() - self.lasttime > 5:
    47                         self.lasttime = time()
    48                         database.clear_cache()
    49                         self.machines = dict((machine.name, machine) for machine in database.session.query(database.Machine).all())
     18    """
     19    ConsoleFS creates a series of subdirectories each mirroring the same real
     20    directory, except for a single file - the .k5login - which is dynamically
     21    generated for each subdirectory
     22    """
     23   
     24    def __init__(self, *args, **kw):
     25        """Initialize the filesystem and set it to allow_other access besides
     26        the user who mounts the filesystem (i.e. root)
     27        """
     28        super(ConsoleFS, self).__init__(*args, **kw)
     29        self.lasttime = 0
     30        self.machines = []
     31        self.fuse_args.add("allow_other", True)
     32       
     33        openlog('invirt-consolefs ', LOG_PID, LOG_DAEMON)
     34       
     35        syslog(LOG_DEBUG, 'Init complete.')
     36   
     37    def make_map(self):
     38        m = Mapper()
     39        m.connect('', controller='getMachines')
     40        m.connect(':machine', controller='getMirror')
     41        m.connect(':machine/.k5login', controller='getK5login')
     42        m.connect(':machine/*(path)', controller='getMirror')
     43        return m
     44   
     45    def recache(self):
     46        if time() - self.lasttime > 5:
     47            self.lasttime = time()
     48            database.clear_cache()
     49            self.machines = dict((machine.name, machine) for machine in database.session.query(database.Machine).all())
    5050
    51         def getMachines(self, **kw):
    52                 self.recache()
    53                 return self.machines.keys()
    54        
    55         def getMirror(self, machine, path='', **kw):
    56                 """Translate the path into its realpath equivalent, and return that
    57                 """
    58                 real = realpath + path
    59                 if os.path.isdir(real):
    60                         # The list is converted to a set so that we can handle the case
    61                         # where there is already a .k5login in the realpath gracefully   
    62                         return routefs.Directory(set(os.listdir(real) + ['.k5login']))
    63                 elif os.path.islink(real):
    64                         return routefs.Symlink(os.readlink(real))
    65                 elif os.path.isfile(real):
    66                         return open(real).read()
    67                 else:
    68                         return -errno.EINVAL
    69        
    70         def getK5login(self, machine, **kw):
    71                 self.recache()
    72                 machine = self.machines[machine]
    73                 users = [acl.user for acl in machine.acl]
    74                 return "\n".join(map(self.userToPrinc, users) + [''])
    75        
    76         def mirrorPath(self, path):
    77                 """Translate a virtual path to its real path counterpart"""
    78                 return realpath + "/".join(getParts(path)[1:])
    79        
    80         def userToPrinc(self, user):
    81                 """Convert Kerberos v4-style names to v5-style and append a default
    82                 realm if none is specified
    83                 """
    84                 if '@' in user:
    85                         (princ, realm) = user.split('@')
    86                 else:
    87                         princ = user
    88                         realm = config.authn[0].realm
    89                
    90                 return princ.replace('.', '/') + '@' + realm
     51    def getMachines(self, **kw):
     52        self.recache()
     53        return self.machines.keys()
     54   
     55    def getMirror(self, machine, path='', **kw):
     56        """Translate the path into its realpath equivalent, and return that
     57        """
     58        real = realpath + path
     59        if os.path.isdir(real):
     60            # The list is converted to a set so that we can handle the case
     61            # where there is already a .k5login in the realpath gracefully   
     62            return routefs.Directory(set(os.listdir(real) + ['.k5login']))
     63        elif os.path.islink(real):
     64            return routefs.Symlink(os.readlink(real))
     65        elif os.path.isfile(real):
     66            return open(real).read()
     67        else:
     68            return -errno.EINVAL
     69   
     70    def getK5login(self, machine, **kw):
     71        self.recache()
     72        machine = self.machines[machine]
     73        users = [acl.user for acl in machine.acl]
     74        return "\n".join(map(self.userToPrinc, users) + [''])
     75   
     76    def mirrorPath(self, path):
     77        """Translate a virtual path to its real path counterpart"""
     78        return realpath + "/".join(getParts(path)[1:])
     79   
     80    def userToPrinc(self, user):
     81        """Convert Kerberos v4-style names to v5-style and append a default
     82        realm if none is specified
     83        """
     84        if '@' in user:
     85            (princ, realm) = user.split('@')
     86        else:
     87            princ = user
     88            realm = config.authn[0].realm
     89       
     90        return princ.replace('.', '/') + '@' + realm
    9191
    9292if __name__ == '__main__':
    93         database.connect()
    94         routefs.main(ConsoleFS)
     93    database.connect()
     94    routefs.main(ConsoleFS)
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