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',
25 class GetBootMedium(Method):
27 This method is a redesign based on former, supposedly dedicated,
28 AdmGenerateNodeConfFile
30 As compared with its ancestor, this method provides a much more detailed
31 detailed interface, that allows to
32 (*) either just preview the node config file -- in which case
33 the node key is NOT recomputed, and NOT provided in the output
34 (*) or regenerate the node config file for storage on a floppy
35 that is, exactly what the ancestor method used todo,
36 including renewing the node's key
37 (*) or regenerate the config file and bundle it inside an ISO or USB image
38 (*) or just provide the generic ISO or USB boot images
39 in which case of course the node_id_or_hostname parameter is not used
41 action is expected among the following string constants
49 Apart for the preview mode, this method generates a new node key for the
50 specified node, effectively invalidating any old boot medium.
52 In addition, two return mechanisms are supported.
53 (*) The default behaviour is that the file's content is returned as a
54 base64-encoded string. This is how the ancestor method used to work.
55 To use this method, pass an empty string as the file parameter.
57 (*) Or, for efficiency -- this makes sense only when the API is used
58 by the web pages that run on the same host -- the caller may provide
59 a filename, in which case the resulting file is stored in that location instead.
60 The filename argument can use the following markers, that are expanded
62 - %d : default root dir (some builtin dedicated area under /var/tmp/)
63 Using this is recommended, and enforced for non-admin users
64 - %n : the node's name when this makes sense, or a mktemp-like name when
65 generic media is requested
66 - %s : a file suffix appropriate in the context (.txt, .iso or the like)
67 - %v : the bootcd version string (e.g. 4.0)
69 With the file-based return mechanism, the method returns the full pathname
72 It is the caller's responsability to remove this file after use.
74 Options: an optional array of keywords.
75 options are not supported for generic images
76 Currently supported are
77 - 'partition' - for USB actions only
79 - 'serial' or 'serial:<console_spec>'
80 console_spec (or 'default') is passed as-is to bootcd/build.sh
81 it is expected to be a colon separated string denoting
82 tty - baudrate - parity - bits
86 - Non-admins can only generate files for nodes at their sites.
87 - Non-admins, when they provide a filename, *must* specify it in the %d area
90 Whenever needed, the method stores intermediate files in a
91 private area, typically not located under the web server's
92 accessible area, and are cleaned up by the method.
96 roles = ['admin', 'pi', 'tech']
100 Mixed(Node.fields['node_id'],
101 Node.fields['hostname']),
102 Parameter (str, "Action mode, expected in " + "|".join(boot_medium_actions)),
103 Parameter (str, "Empty string for verbatim result, resulting file full path otherwise"),
104 Parameter ([str], "Options"),
107 returns = Parameter(str, "Node boot medium, either inlined, or filename, depending on the filename parameter")
109 BOOTCDDIR = "/usr/share/bootcd/"
110 BOOTCDBUILD = "/usr/share/bootcd/build.sh"
111 GENERICDIR = "/var/www/html/download/"
112 WORKDIR = "/var/tmp/bootmedium"
114 # uncomment this to preserve temporary area and bootcustom logs
117 ### returns (host, domain) :
118 # 'host' : host part of the hostname
119 # 'domain' : domain part of the hostname
120 def split_hostname (self, node):
121 # Split hostname into host and domain parts
122 parts = node['hostname'].split(".", 1)
124 raise PLCInvalidArgument, "Node hostname %s is invalid"%node['hostname']
128 def floppy_contents (self, node, renew_key):
130 if node['peer_id'] is not None:
131 raise PLCInvalidArgument, "Not a local node"
133 # If we are not an admin, make sure that the caller is a
134 # member of the site at which the node is located.
135 if 'admin' not in self.caller['roles']:
136 if node['site_id'] not in self.caller['site_ids']:
137 raise PLCPermissionDenied, "Not allowed to generate a configuration file for %s"%node['hostname']
139 # Get node networks for this node
141 nodenetworks = NodeNetworks(self.api, node['nodenetwork_ids'])
142 for nodenetwork in nodenetworks:
143 if nodenetwork['is_primary']:
144 primary = nodenetwork
147 raise PLCInvalidArgument, "No primary network configured on %s"%node['hostname']
149 ( host, domain ) = self.split_hostname (node)
152 # Generate 32 random bytes
153 bytes = random.sample(xrange(0, 256), 32)
154 # Base64 encode their string representation
155 node['key'] = base64.b64encode("".join(map(chr, bytes)))
156 # XXX Boot Manager cannot handle = in the key
157 node['key'] = node['key'].replace("=", "")
161 # Generate node configuration file suitable for BootCD
165 file += 'NODE_ID="%d"\n' % node['node_id']
166 file += 'NODE_KEY="%s"\n' % node['key']
169 file += 'NET_DEVICE="%s"\n' % primary['mac'].lower()
171 file += 'IP_METHOD="%s"\n' % primary['method']
173 if primary['method'] == 'static':
174 file += 'IP_ADDRESS="%s"\n' % primary['ip']
175 file += 'IP_GATEWAY="%s"\n' % primary['gateway']
176 file += 'IP_NETMASK="%s"\n' % primary['netmask']
177 file += 'IP_NETADDR="%s"\n' % primary['network']
178 file += 'IP_BROADCASTADDR="%s"\n' % primary['broadcast']
179 file += 'IP_DNS1="%s"\n' % primary['dns1']
180 file += 'IP_DNS2="%s"\n' % (primary['dns2'] or "")
182 file += 'HOST_NAME="%s"\n' % host
183 file += 'DOMAIN_NAME="%s"\n' % domain
185 # define various nodenetwork settings attached to the primary nodenetwork
186 settings = NodeNetworkSettings (self.api, {'nodenetwork_id':nodenetwork['nodenetwork_id']})
189 for setting in settings:
190 if setting['category'] is not None:
191 categories.add(setting['category'])
193 for category in categories:
194 category_settings = NodeNetworkSettings(self.api,{'nodenetwork_id':nodenetwork['nodenetwork_id'],
195 'category':category})
196 if category_settings:
197 file += '### Category : %s\n'%category
198 for setting in category_settings:
199 file += '%s_%s="%s"\n'%(category.upper(),setting['name'].upper(),setting['value'])
201 for nodenetwork in nodenetworks:
202 if nodenetwork['method'] == 'ipmi':
203 file += 'IPMI_ADDRESS="%s"\n' % nodenetwork['ip']
204 if nodenetwork['mac']:
205 file += 'IPMI_MAC="%s"\n' % nodenetwork['mac'].lower()
210 def bootcd_version (self):
212 f = open (self.BOOTCDDIR + "/build/version.txt")
213 version=f.readline().strip()
218 def cleantrash (self):
219 for file in self.trash:
221 print 'DEBUG -- preserving',file
225 def call(self, auth, node_id_or_hostname, action, filename, options = []):
229 if action not in boot_medium_actions:
230 raise PLCInvalidArgument, "Unknown action %s"%action
232 ### compute file suffix and type
233 if action.find("-iso") >= 0 :
236 elif action.find("-usb") >= 0:
243 # handle / caconicalize options
246 raise PLCInvalidArgument, "Options are not supported for node configs"
248 # create a dict for build.sh
250 for option in options:
251 if option == "cramfs":
252 optdict['cramfs']=True
253 elif option == 'partition':
255 raise PLCInvalidArgument, "option 'partition' is for USB images only"
258 elif option == "serial":
259 optdict['serial']='default'
260 elif option.find("serial:") == 0:
261 optdict['serial']=option.replace("serial:","")
263 raise PLCInvalidArgument, "unknown option %s"%option
265 ### compute a 8 bytes random number
266 tempbytes = random.sample (xrange(0,256), 8);
268 return chr((c>>4)+65) + chr ((c&16)+65)
269 temp = "".join(map(hexa2,tempbytes))
271 ### check node if needed
272 if action.find("node-") == 0:
273 nodes = Nodes(self.api, [node_id_or_hostname])
275 raise PLCInvalidArgument, "No such node %r"%node_id_or_hostname
277 nodename = node['hostname']
284 filename = filename.replace ("%d",self.WORKDIR)
285 filename = filename.replace ("%n",nodename)
286 filename = filename.replace ("%s",suffix)
287 filename = filename.replace ("%p",self.api.config.PLC_NAME)
288 # only if filename contains "%v", bootcd is maybe not avail ?
289 if filename.find("%v") >=0:
290 filename = filename.replace ("%v",self.bootcd_version())
292 ### Check filename location
294 if 'admin' not in self.caller['roles']:
295 if ( filename.index(self.WORKDIR) != 0):
296 raise PLCInvalidArgument, "File %s not under %s"%(filename,self.WORKDIR)
298 ### output should not exist (concurrent runs ..)
299 if os.path.exists(filename):
300 raise PLCInvalidArgument, "Resulting file %s already exists"%filename
302 ### we can now safely create the file,
303 ### either we are admin or under a controlled location
304 if not os.path.exists(os.path.dirname(filename)):
306 os.makedirs (os.path.dirname(filename),0777)
308 raise PLCPermissionDenied, "Could not create dir %s"%os.path.dirname(filename)
312 if action == 'generic-iso' or action == 'generic-usb':
314 raise PLCInvalidArgument, "Options are not supported for generic images"
315 # this raises an exception if bootcd is missing
316 version = self.bootcd_version()
317 generic_name = "%s-BootCD-%s%s"%(self.api.config.PLC_NAME,
320 generic_path = "%s/%s" % (self.GENERICDIR,generic_name)
323 ret=os.system ("cp %s %s"%(generic_path,filename))
327 raise PLCPermissionDenied, "Could not copy %s into"%(generic_path,filename)
329 ### return the generic medium content as-is, just base64 encoded
330 return base64.b64encode(file(generic_path).read())
332 ### config file preview or regenerated
333 if action == 'node-preview' or action == 'node-floppy':
334 renew_key = (action == 'node-floppy')
335 floppy = self.floppy_contents (node,renew_key)
338 file(filename,'w').write(floppy)
340 raise PLCPermissionDenied, "Could not write into %s"%filename
345 ### we're left with node-iso and node-usb
346 if action == 'node-iso' or action == 'node-usb':
348 ### check we've got required material
349 version = self.bootcd_version()
351 if not os.path.isfile(self.BOOTCDBUILD):
352 raise PLCAPIError, "Cannot locate bootcd/build.sh script %s"%self.BOOTCDBUILD
354 # create the workdir if needed
355 if not os.path.isdir(self.WORKDIR):
357 os.makedirs(self.WORKDIR,0777)
358 os.chmod(self.WORKDIR,0777)
360 raise PLCPermissionDenied, "Could not create dir %s"%self.WORKDIR
363 # generate floppy config
364 floppy_text = self.floppy_contents(node,True)
366 floppy_file = "%s/%s.txt"%(self.WORKDIR,nodename)
368 file(floppy_file,"w").write(floppy_text)
370 raise PLCPermissionDenied, "Could not write into %s"%floppy_file
372 self.trash.append(floppy_file)
374 node_image = "%s/%s%s"%(self.WORKDIR,nodename,suffix)
376 # make build's arguments
378 if "cramfs" in optdict: type += "_cramfs"
379 if "serial" in optdict: serial_arg = "-s %s"%optdict['serial']
380 log_file="%s.log"%node_image
382 build_command = '%s -f "%s" -o "%s" -t "%s" %s &> %s' % (self.BOOTCDBUILD,
389 print 'build command:',build_command
390 ret=os.system(build_command)
392 raise PLCAPIError,"bootcd/build.sh failed\n%s\n%s"%(
393 build_command,file(log_file).read())
395 self.trash.append(log_file)
396 if not os.path.isfile (node_image):
397 raise PLCAPIError,"Unexpected location of build.sh output - %s"%node_image
401 ret=os.system("mv %s %s"%(node_image,filename))
403 self.trash.append(node_image)
405 raise PLCAPIError, "Could not move node image %s into %s"%(node_image,filename)
409 result = file(node_image).read()
410 self.trash.append(node_image)
412 return base64.b64encode(result)
417 # we're done here, or we missed something
418 raise PLCAPIError,'Unhandled action %s'%action