Mercurial > farol > farolluz
annotate farolluz/document.py @ 43:b87f2a6e613a
Add CVE parsing (from OpenVAS GSA)
| author | Benoît Allard <benoit.allard@greenbone.net> |
|---|---|
| date | Mon, 29 Dec 2014 16:33:34 +0100 |
| parents | 1ea1a3c3c790 |
| children |
| rev | line source |
|---|---|
| 0 | 1 # -*- coding: utf-8 -*- |
| 2 # | |
| 3 # Authors: | |
| 4 # Benoît Allard <benoit.allard@greenbone.net> | |
| 5 # | |
| 6 # Copyright: | |
| 7 # Copyright (C) 2014 Greenbone Networks GmbH | |
| 8 # | |
| 9 # This program is free software; you can redistribute it and/or | |
| 10 # modify it under the terms of the GNU General Public License | |
| 11 # as published by the Free Software Foundation; either version 2 | |
| 12 # of the License, or (at your option) any later version. | |
| 13 # | |
| 14 # This program is distributed in the hope that it will be useful, | |
| 15 # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 17 # GNU General Public License for more details. | |
| 18 # | |
| 19 # You should have received a copy of the GNU General Public License | |
| 20 # along with this program; if not, write to the Free Software | |
| 21 # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 22 | |
| 23 """\ | |
| 24 Objects related to CVRF Documents | |
| 25 """ | |
| 26 | |
|
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27 from .common import ValidationError |
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28 from .producttree import CVRFProductTree, CVRFRelationship |
| 0 | 29 |
| 30 class CVRFPublisher(object): | |
| 31 TYPES = ('Vendor', 'Discoverer', 'Coordinator', 'User', 'Other') | |
| 32 def __init__(self, _type, vendorid=None): | |
| 33 self._type = _type | |
| 34 self._vendorid = vendorid | |
| 35 self._contact = None | |
| 36 self._authority = None | |
| 37 | |
| 38 def setContact(self, contact): | |
| 39 self._contact = contact | |
| 40 | |
| 41 def setAuthority(self, authority): | |
| 42 self._authority = authority | |
| 43 | |
| 44 def validate(self): | |
| 45 if not self._type: | |
| 46 raise ValidationError('Document Publisher needs to have a type') | |
| 47 if self._type not in self.TYPES: | |
| 48 raise ValidationError('Document Publisher Type needs to be one of %s' % ', '.join(self.TYPES)) | |
| 49 | |
| 50 def __str__(self): | |
| 51 s = 'CVRFPublisher: %s' % self._type | |
| 52 if self._vendorid is not None: | |
| 53 s += ' ID: %s' % self._vendorid | |
| 54 if self._contact is not None: | |
| 55 s += ' Contact: "%s"' % self._contact | |
| 56 if self._authority is not None: | |
| 57 s += ' Authority: "%s"' % self._authority | |
| 58 return s | |
| 59 | |
| 60 | |
| 61 class CVRFTrackingID(object): | |
| 62 def __init__(self, _id): | |
| 63 self._id = _id | |
| 64 self._aliases = [] | |
| 65 | |
| 66 def addAlias(self, alias): | |
| 67 self._aliases.append(alias) | |
| 68 | |
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69 def getId(self): |
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70 return self._id |
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71 |
| 0 | 72 def validate(self): |
| 73 if not self._id: | |
| 74 raise ValidationError('Document ID cannot be left empty') | |
| 75 | |
| 76 def __str__(self): | |
| 77 if self._aliases: | |
| 78 return "%s (%s)" % (self._id, ', '.join(self._aliases)) | |
| 79 return self._id | |
| 80 | |
| 81 | |
| 82 class CVRFTracking(object): | |
| 83 STATUSES = ('Draft', 'Interim', 'Final') | |
| 84 def __init__(self, _id, status, version, initial, current): | |
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85 """ version must be a tuple of (max four) ints """ |
| 0 | 86 self._identification = _id |
| 87 self._status = status | |
| 88 self._version = version | |
| 89 self._history = [] | |
| 90 self._initialDate = initial | |
| 91 self._currentDate = current | |
| 92 self._generator = None | |
| 93 | |
| 94 def addRevision(self, revision): | |
| 95 self._history.append(revision) | |
| 96 | |
| 97 def setGenerator(self, generator): | |
| 98 self._generator = generator | |
| 99 | |
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100 def getId(self): |
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101 return self._identification.getId() |
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102 |
| 0 | 103 def validate(self): |
| 104 if self._identification is None: | |
| 105 raise ValidationError('Document Tracking needs to have an Identification') | |
| 106 self._identification.validate() | |
| 107 if not self._status: | |
| 108 raise ValidationError('Document status must be set') | |
| 109 if self._status not in self.STATUSES: | |
| 110 raise ValidationError('Document Status must be one of %s' % ', '.join(self.STATUSES)) | |
| 111 if not self._version: | |
| 112 raise ValidationError('Document Version must be set') | |
| 113 if len(self._version) > 4: | |
| 114 raise ValidationError('Document Version must be comprised between `nn` and `nn.nn.nn.nn`') | |
| 115 if not self._history: | |
| 116 raise ValidationError('Document must have at least a revision') | |
| 117 if not self._initialDate: | |
| 118 raise ValidationError('Document must have an initial Release date set') | |
| 119 prev_date = self._initialDate | |
| 120 if self._history[0]._date < self._initialDate: | |
| 121 # Documents could have revisions before being released | |
| 122 prev_date = self._history[0]._date | |
| 123 prev = () | |
| 124 for revision in self._history: | |
| 125 revision.validate() | |
| 126 if revision._number <= prev: | |
| 127 raise ValidationError('Revision numbers must always be increasing') | |
| 128 if revision._date < prev_date: | |
| 129 raise ValidationError('Revision dates must always be increasing') | |
| 130 prev = revision._number | |
| 131 prev_date = revision._date | |
| 132 if not self._currentDate: | |
| 133 raise ValidationError('Document must have a Current Release Date set') | |
| 134 if self._currentDate != self._history[-1]._date: | |
| 135 raise ValidationError('Current Release Date must be the same as the Date from the last Revision') | |
| 136 if self._initialDate > self._currentDate: | |
| 137 raise ValidationError('Initial date must not be after current Date') | |
| 138 if self._version != self._history[-1]._number: | |
| 139 raise ValidationError('Document version must be the same as the number of the last Revision') | |
| 140 | |
| 141 def __str__(self): | |
| 142 s = "ID: %s" % self._identification | |
| 143 s += " Status: %s" % self._status | |
| 144 s += " v%s" % '.'.join('%d' % i for i in self._version) | |
| 145 s += " %d revisions" % len(self._history) | |
| 146 s += " Initial release: %s" % self._initialDate.isoformat() | |
| 147 return s | |
| 148 | |
| 149 | |
| 150 class CVRFRevision(object): | |
| 151 def __init__(self, number, date, description): | |
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152 """ number is a tuple of (max four) ints """ |
| 0 | 153 self._number = number |
| 154 self._date = date | |
| 155 self._description = description | |
| 156 | |
| 157 def validate(self): | |
| 158 if not self._number: | |
| 159 raise ValidationError('A Revision must have a Number') | |
| 160 if not self._date: | |
| 161 raise ValidationError('A Revision must have a Date') | |
| 162 if not self._description: | |
| 163 raise ValidationError('A Revision must have a Description') | |
| 164 | |
| 165 class CVRFGenerator(object): | |
| 166 def __init__(self): | |
| 167 self._engine = None | |
| 168 self._date = None | |
| 169 | |
| 170 def setEngine(self, engine): | |
| 171 self._engine = engine | |
| 172 | |
| 173 def setDate(self, date): | |
| 174 self._date = date | |
| 175 | |
| 176 def validate(self): | |
| 177 if (not self._engine) and (not self._date): | |
| 178 raise ValidationError('The Generator must have at least an Engine or a Date') | |
| 179 | |
| 180 | |
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181 class CVRFAggregateSeverity(object): |
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182 def __init__(self, severity): |
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183 self._severity = severity |
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184 self._namespace = None |
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185 |
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186 def setNamespace(self, namespace): |
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187 self._namespace = namespace |
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188 |
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189 |
| 0 | 190 class CVRF(object): |
| 191 def __init__(self, title, _type): | |
| 192 self._title = title | |
| 193 self._type = _type | |
| 194 self._publisher = None | |
| 195 self._tracking = None | |
| 196 self._notes = [] | |
| 197 self._distribution = None | |
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198 self._aggregateseverity = None |
| 0 | 199 self._references = [] |
| 200 self._acknowledgments = [] | |
| 201 self._producttree = None | |
| 202 self._vulnerabilities = [] | |
| 203 | |
| 204 def setPublisher(self, publisher): | |
| 205 self._publisher = publisher | |
| 206 | |
| 207 def setTracking(self, tracking): | |
| 208 self._tracking = tracking | |
| 209 | |
| 210 def addNote(self, note): | |
| 211 self._notes.append(note) | |
| 212 | |
| 213 def setDistribution(self, distribution): | |
| 214 self._distribution = distribution | |
| 215 | |
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216 def setAggregateSeverity(self, aggregateseverity): |
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217 self._aggregateseverity = aggregateseverity |
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218 |
| 0 | 219 def addReference(self, ref): |
| 220 self._references.append(ref) | |
| 221 | |
| 222 def addAcknowledgment(self, ack): | |
| 223 self._acknowledgments.append(ack) | |
| 224 | |
| 225 def createProductTree(self): | |
| 226 """ only done if the element is there """ | |
| 227 self._producttree = CVRFProductTree() | |
| 228 return self._producttree | |
| 229 | |
| 230 def addVulnerability(self, vuln): | |
| 231 self._vulnerabilities.append(vuln) | |
| 232 | |
| 233 def getProductForID(self, productid): | |
| 234 if self._producttree is None: | |
| 235 raise ValueError('No ProductTree') | |
| 236 return self._producttree.getProductForID(productid) | |
| 237 | |
| 238 def getGroupForID(self, groupid): | |
| 239 if self._producttree is None: | |
| 240 raise ValueError('No ProductTree') | |
| 241 return self._producttree.getGroupForID(groupid) | |
| 242 | |
| 243 def getHighestCVSS(self): | |
| 244 highestBaseScore = 0 | |
| 245 highest = None | |
| 246 for vulnerability in self._vulnerabilities: | |
| 247 for cvss in vulnerability._cvsss: | |
| 248 if cvss._basescore <= highestBaseScore: | |
| 249 continue | |
| 250 highestBaseScore = cvss._basescore | |
| 251 highest = cvss | |
| 252 return highest | |
| 253 | |
| 254 def getProductList(self, type_='Fixed'): | |
| 255 products = set() | |
| 256 if type_ == 'Fixed': | |
| 257 # First try through the Remediation | |
| 258 for vulnerability in self._vulnerabilities: | |
| 259 for remediation in vulnerability._remediations: | |
| 260 if remediation._type != 'Vendor Fix': | |
| 261 continue | |
| 262 for productid in remediation._productids: | |
| 263 products.add(productid) | |
| 264 for groupid in remediation._groupids: | |
| 265 for productid in self.getGroupForID(groupid)._productids: | |
| 266 products.add(productid) | |
| 267 if not products: | |
| 268 # If nothing there, try through the productstatuses | |
| 269 for vulnerability in self._vulnerabilities: | |
| 270 for status in vulnerability._productstatuses: | |
| 271 if status._type != type_: | |
| 272 continue | |
| 273 for productid in status._productids: | |
| 274 products.add(productid) | |
| 275 return set(self.getProductForID(p) for p in products) | |
| 276 | |
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277 def mentionsProductId(self, productid): |
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278 # We first look at the ProductTree |
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279 ptree = self._producttree |
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280 for relation in ptree._relationships: |
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281 if productid == relation._productreference: |
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282 yield relation |
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283 elif productid == relation._relatestoproductreference: |
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284 yield relation |
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285 # Then go through the groups |
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286 for group in ptree._groups: |
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287 if productid in group._productids: |
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288 yield group |
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289 # Finally, go through all the Vulnerabilities |
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290 for vulnerability in self._vulnerabilities: |
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291 for item in vulnerability.mentionsProdId(productid): |
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292 yield item |
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293 |
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294 def isProductOrphan(self, productid): |
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295 """ Returns if a productid is mentioned nowhere in the document """ |
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296 for _ in self.mentionsProductId(productid): |
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297 return False |
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298 return True |
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299 |
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300 def changeProductID(self, old, new): |
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301 for item in self.mentionsProductId(old): |
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302 if isinstance(item, CVRFRelationship): |
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303 if old == item._productreference: |
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304 item._productreference = new |
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305 elif old == item._relatestoproductreference: |
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306 item._relatestoproductreference = new |
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307 else: |
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308 item._productids.remove(old) |
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309 item._productids.append(new) |
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310 |
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311 def mentionsGroupId(self, groupid): |
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312 for vulnerability in self._vulnerabilities: |
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313 for item in vulnerability.mentionsGroupId(groupid): |
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314 yield item |
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315 |
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316 def isGroupOrphan(self, groupid): |
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317 """ Returns if a group can be safely deleted """ |
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318 for _ in self.mentionsGroupId(groupid): |
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319 return False |
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320 return True |
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321 |
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322 def changeGroupID(self, old, new): |
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323 for item in self.mentionsGroupId(old): |
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324 item._groupids.remove(old) |
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325 item._groupids.append(new) |
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326 |
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327 def isProductTreeOrphan(self): |
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328 """ Difference with the previous method is that we don;t care about |
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329 inter-producttree references """ |
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330 for vulnerability in self._vulnerabilities: |
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331 for product in self._producttree._products: |
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332 if vulnerability.isMentioningProdId(product._productid): |
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333 return False |
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334 for group in self._producttree._groups: |
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335 if vulnerability.isMentioningGroupId(group._groupid): |
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336 return False |
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337 return True |
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338 |
| 0 | 339 def getNote(self, ordinal): |
| 340 for note in self._notes: | |
| 341 if note._ordinal == ordinal: | |
| 342 return note | |
| 343 return None | |
| 344 | |
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345 def getDocId(self): |
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346 if self._tracking is not None: |
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347 return self._tracking.getId() |
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348 # Make up something ... |
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349 return self._title.lower() |
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350 |
| 0 | 351 def validate(self): |
| 352 if not self._title: | |
| 353 raise ValidationError('Document Title cannot be empty') | |
| 354 if not self._type: | |
| 355 raise ValidationError('Document Type cannot be empty') | |
| 356 if self._publisher is None: | |
| 357 raise ValidationError('Document Publisher needs to be set') | |
| 358 self._publisher.validate() | |
| 359 if self._tracking is None: | |
| 360 raise ValidationError('Document Tracking needs to be set') | |
| 361 self._tracking.validate() | |
| 362 ordinals = set() | |
| 363 for note in self._notes: | |
| 364 note.validate() | |
| 365 if note._ordinal in ordinals: | |
| 366 raise ValidationError('Document Note ordinal %d is issued twice' % note._ordinal) | |
| 367 ordinals.add(note._ordinal) | |
| 368 for reference in self._references: | |
| 369 reference.validate() | |
| 370 for acknowledgment in self._acknowledgments: | |
| 371 acknowledgment.validate() | |
| 372 productids = set() | |
| 373 groupids = set() | |
| 374 if self._producttree: | |
| 375 productids, groupids = self._producttree.validate() | |
| 376 ordinals = set() | |
| 377 for vulnerability in self._vulnerabilities: | |
| 378 vulnerability.validate(productids, groupids) | |
| 379 if vulnerability._ordinal in ordinals: | |
| 380 raise ValidationError('Vulnerability ordinal %d is issued twice' % vulnerability._ordinal) | |
| 381 ordinals.add(vulnerability._ordinal) | |
| 382 | |
| 383 def __str__(self): | |
| 384 s = [ | |
| 385 'Title: %s' % self._title, | |
| 386 'Type: %s' % self._type, | |
| 387 'Publisher: %s' % self._publisher, | |
| 388 'tracking: %s' % self._tracking, | |
| 389 '%d Notes: %s' % (len(self._notes), ', '.join( | |
| 390 str(n) for n in self._notes)) | |
| 391 ] | |
| 392 if self._distribution is not None: | |
| 393 s.append('Distribution: %s' % self._distribution) | |
| 394 s.extend([ | |
| 395 '%d Acknowledgments' % len(self._acknowledgments), | |
| 396 'Products: %s' % self._producttree, | |
| 397 ]) | |
| 398 return '\n'.join(s) |