7 from PLC.Faults import *
8 from PLC.Method import Method
9 from PLC.Parameter import Parameter, Mixed
10 from PLC.Auth import Auth
12 from PLC.Nodes import Node, Nodes
13 from PLC.NodeNetworks import NodeNetwork, NodeNetworks
14 from PLC.NodeNetworkSettings import NodeNetworkSetting, NodeNetworkSettings
16 # could not define this in the class..
17 boot_medium_actions = [ 'node-preview',
26 # xxx used by GetDummyBoxMedium
28 # Generate 32 random bytes
29 bytes = random.sample(xrange(0, 256), 32)
30 # Base64 encode their string representation
31 key = base64.b64encode("".join(map(chr, bytes)))
32 # Boot Manager cannot handle = in the key
33 # XXX this sounds wrong, as it might prevent proper decoding
34 key = key.replace("=", "")
37 class GetBootMedium(Method):
39 This method is a redesign based on former, supposedly dedicated,
40 AdmGenerateNodeConfFile
42 As compared with its ancestor, this method provides a much more detailed
43 detailed interface, that allows to
44 (*) either just preview the node config file -- in which case
45 the node key is NOT recomputed, and NOT provided in the output
46 (*) or regenerate the node config file for storage on a floppy
47 that is, exactly what the ancestor method used todo,
48 including renewing the node's key
49 (*) or regenerate the config file and bundle it inside an ISO or USB image
50 (*) or just provide the generic ISO or USB boot images
51 in which case of course the node_id_or_hostname parameter is not used
53 action is expected among the following string constants
61 Apart for the preview mode, this method generates a new node key for the
62 specified node, effectively invalidating any old boot medium.
64 In addition, two return mechanisms are supported.
65 (*) The default behaviour is that the file's content is returned as a
66 base64-encoded string. This is how the ancestor method used to work.
67 To use this method, pass an empty string as the file parameter.
69 (*) Or, for efficiency -- this makes sense only when the API is used
70 by the web pages that run on the same host -- the caller may provide
71 a filename, in which case the resulting file is stored in that location instead.
72 The filename argument can use the following markers, that are expanded
74 - %d : default root dir (some builtin dedicated area under /var/tmp/)
75 Using this is recommended, and enforced for non-admin users
76 - %n : the node's name when this makes sense, or a mktemp-like name when
77 generic media is requested
78 - %s : a file suffix appropriate in the context (.txt, .iso or the like)
79 - %v : the bootcd version string (e.g. 4.0)
81 With the file-based return mechanism, the method returns the full pathname
84 It is the caller's responsability to remove this file after use.
86 Options: an optional array of keywords.
87 options are not supported for generic images
88 Currently supported are
89 - 'partition' - for USB actions only
91 - 'serial' or 'serial:<console_spec>'
92 console_spec (or 'default') is passed as-is to bootcd/build.sh
93 it is expected to be a colon separated string denoting
94 tty - baudrate - parity - bits
98 - Non-admins can only generate files for nodes at their sites.
99 - Non-admins, when they provide a filename, *must* specify it in the %d area
102 Whenever needed, the method stores intermediate files in a
103 private area, typically not located under the web server's
104 accessible area, and are cleaned up by the method.
108 roles = ['admin', 'pi', 'tech']
112 Mixed(Node.fields['node_id'],
113 Node.fields['hostname']),
114 Parameter (str, "Action mode, expected in " + "|".join(boot_medium_actions)),
115 Parameter (str, "Empty string for verbatim result, resulting file full path otherwise"),
116 Parameter ([str], "Options"),
119 returns = Parameter(str, "Node boot medium, either inlined, or filename, depending on the filename parameter")
121 BOOTCDDIR = "/usr/share/bootcd/"
122 BOOTCDBUILD = "/usr/share/bootcd/build.sh"
123 GENERICDIR = "/var/www/html/download/"
124 WORKDIR = "/var/tmp/bootmedium"
126 # uncomment this to preserve temporary area and bootcustom logs
129 ### returns (host, domain) :
130 # 'host' : host part of the hostname
131 # 'domain' : domain part of the hostname
132 def split_hostname (self, node):
133 # Split hostname into host and domain parts
134 parts = node['hostname'].split(".", 1)
136 raise PLCInvalidArgument, "Node hostname %s is invalid"%node['hostname']
140 def floppy_contents (self, node, renew_key):
142 if node['peer_id'] is not None:
143 raise PLCInvalidArgument, "Not a local node"
145 # If we are not an admin, make sure that the caller is a
146 # member of the site at which the node is located.
147 if 'admin' not in self.caller['roles']:
148 if node['site_id'] not in self.caller['site_ids']:
149 raise PLCPermissionDenied, "Not allowed to generate a configuration file for %s"%node['hostname']
151 # Get node networks for this node
153 nodenetworks = NodeNetworks(self.api, node['nodenetwork_ids'])
154 for nodenetwork in nodenetworks:
155 if nodenetwork['is_primary']:
156 primary = nodenetwork
159 raise PLCInvalidArgument, "No primary network configured on %s"%node['hostname']
161 ( host, domain ) = self.split_hostname (node)
164 node['key'] = compute_key()
168 # Generate node configuration file suitable for BootCD
172 file += 'NODE_ID="%d"\n' % node['node_id']
173 file += 'NODE_KEY="%s"\n' % node['key']
176 file += 'NET_DEVICE="%s"\n' % primary['mac'].lower()
178 file += 'IP_METHOD="%s"\n' % primary['method']
180 if primary['method'] == 'static':
181 file += 'IP_ADDRESS="%s"\n' % primary['ip']
182 file += 'IP_GATEWAY="%s"\n' % primary['gateway']
183 file += 'IP_NETMASK="%s"\n' % primary['netmask']
184 file += 'IP_NETADDR="%s"\n' % primary['network']
185 file += 'IP_BROADCASTADDR="%s"\n' % primary['broadcast']
186 file += 'IP_DNS1="%s"\n' % primary['dns1']
187 file += 'IP_DNS2="%s"\n' % (primary['dns2'] or "")
189 file += 'HOST_NAME="%s"\n' % host
190 file += 'DOMAIN_NAME="%s"\n' % domain
192 # define various nodenetwork settings attached to the primary nodenetwork
193 settings = NodeNetworkSettings (self.api, {'nodenetwork_id':nodenetwork['nodenetwork_id']})
196 for setting in settings:
197 if setting['category'] is not None:
198 categories.add(setting['category'])
200 for category in categories:
201 category_settings = NodeNetworkSettings(self.api,{'nodenetwork_id':nodenetwork['nodenetwork_id'],
202 'category':category})
203 if category_settings:
204 file += '### Category : %s\n'%category
205 for setting in category_settings:
206 file += '%s_%s="%s"\n'%(category.upper(),setting['name'].upper(),setting['value'])
208 for nodenetwork in nodenetworks:
209 if nodenetwork['method'] == 'ipmi':
210 file += 'IPMI_ADDRESS="%s"\n' % nodenetwork['ip']
211 if nodenetwork['mac']:
212 file += 'IPMI_MAC="%s"\n' % nodenetwork['mac'].lower()
217 def bootcd_version (self):
219 f = open (self.BOOTCDDIR + "/build/version.txt")
220 version=f.readline().strip()
225 def cleantrash (self):
226 for file in self.trash:
228 print 'DEBUG -- preserving',file
232 def call(self, auth, node_id_or_hostname, action, filename, options = []):
236 if action not in boot_medium_actions:
237 raise PLCInvalidArgument, "Unknown action %s"%action
239 ### compute file suffix and type
240 if action.find("-iso") >= 0 :
243 elif action.find("-usb") >= 0:
250 # handle / caconicalize options
253 raise PLCInvalidArgument, "Options are not supported for node configs"
255 # create a dict for build.sh
257 for option in options:
258 if option == "cramfs":
259 optdict['cramfs']=True
260 elif option == 'partition':
262 raise PLCInvalidArgument, "option 'partition' is for USB images only"
265 elif option == "serial":
266 optdict['serial']='default'
267 elif option.find("serial:") == 0:
268 optdict['serial']=option.replace("serial:","")
270 raise PLCInvalidArgument, "unknown option %s"%option
272 ### compute a 8 bytes random number
273 tempbytes = random.sample (xrange(0,256), 8);
275 return chr((c>>4)+65) + chr ((c&16)+65)
276 temp = "".join(map(hexa2,tempbytes))
278 ### check node if needed
279 if action.find("node-") == 0:
280 nodes = Nodes(self.api, [node_id_or_hostname])
282 raise PLCInvalidArgument, "No such node %r"%node_id_or_hostname
284 nodename = node['hostname']
291 # allow to set filename to None or any other empty value
292 if not filename: filename=''
293 filename = filename.replace ("%d",self.WORKDIR)
294 filename = filename.replace ("%n",nodename)
295 filename = filename.replace ("%s",suffix)
296 filename = filename.replace ("%p",self.api.config.PLC_NAME)
297 # only if filename contains "%v", bootcd is maybe not avail ?
298 if filename.find("%v") >=0:
299 filename = filename.replace ("%v",self.bootcd_version())
301 ### Check filename location
303 if 'admin' not in self.caller['roles']:
304 if ( filename.index(self.WORKDIR) != 0):
305 raise PLCInvalidArgument, "File %s not under %s"%(filename,self.WORKDIR)
307 ### output should not exist (concurrent runs ..)
308 if os.path.exists(filename):
309 raise PLCInvalidArgument, "Resulting file %s already exists"%filename
311 ### we can now safely create the file,
312 ### either we are admin or under a controlled location
313 filedir=os.path.dirname(filename)
314 # dirname does not return "." for a local filename like its shell counterpart
316 if not os.path.exists(filedir):
318 os.makedirs (dirname,0777)
320 raise PLCPermissionDenied, "Could not create dir %s"%dirname
324 if action == 'generic-iso' or action == 'generic-usb':
326 raise PLCInvalidArgument, "Options are not supported for generic images"
327 # this raises an exception if bootcd is missing
328 version = self.bootcd_version()
329 generic_name = "%s-BootCD-%s%s"%(self.api.config.PLC_NAME,
332 generic_path = "%s/%s" % (self.GENERICDIR,generic_name)
335 ret=os.system ("cp %s %s"%(generic_path,filename))
339 raise PLCPermissionDenied, "Could not copy %s into"%(generic_path,filename)
341 ### return the generic medium content as-is, just base64 encoded
342 return base64.b64encode(file(generic_path).read())
344 ### config file preview or regenerated
345 if action == 'node-preview' or action == 'node-floppy':
346 renew_key = (action == 'node-floppy')
347 floppy = self.floppy_contents (node,renew_key)
350 file(filename,'w').write(floppy)
352 raise PLCPermissionDenied, "Could not write into %s"%filename
357 ### we're left with node-iso and node-usb
358 if action == 'node-iso' or action == 'node-usb':
360 ### check we've got required material
361 version = self.bootcd_version()
363 if not os.path.isfile(self.BOOTCDBUILD):
364 raise PLCAPIError, "Cannot locate bootcd/build.sh script %s"%self.BOOTCDBUILD
366 # create the workdir if needed
367 if not os.path.isdir(self.WORKDIR):
369 os.makedirs(self.WORKDIR,0777)
370 os.chmod(self.WORKDIR,0777)
372 raise PLCPermissionDenied, "Could not create dir %s"%self.WORKDIR
375 # generate floppy config
376 floppy_text = self.floppy_contents(node,True)
378 floppy_file = "%s/%s.txt"%(self.WORKDIR,nodename)
380 file(floppy_file,"w").write(floppy_text)
382 raise PLCPermissionDenied, "Could not write into %s"%floppy_file
384 self.trash.append(floppy_file)
386 node_image = "%s/%s%s"%(self.WORKDIR,nodename,suffix)
388 # make build's arguments
390 if "cramfs" in optdict: type += "_cramfs"
391 if "serial" in optdict: serial_arg = "-s %s"%optdict['serial']
392 log_file="%s.log"%node_image
394 build_command = '%s -f "%s" -o "%s" -t "%s" %s &> %s' % (self.BOOTCDBUILD,
401 print 'build command:',build_command
402 ret=os.system(build_command)
404 raise PLCAPIError,"bootcd/build.sh failed\n%s\n%s"%(
405 build_command,file(log_file).read())
407 self.trash.append(log_file)
408 if not os.path.isfile (node_image):
409 raise PLCAPIError,"Unexpected location of build.sh output - %s"%node_image
413 ret=os.system("mv %s %s"%(node_image,filename))
415 self.trash.append(node_image)
417 raise PLCAPIError, "Could not move node image %s into %s"%(node_image,filename)
421 result = file(node_image).read()
422 self.trash.append(node_image)
424 return base64.b64encode(result)
429 # we're done here, or we missed something
430 raise PLCAPIError,'Unhandled action %s'%action