def __init__(self, datasetDir, labelFilename = 'labels.txt'):
self.datasetDir = datasetDir
self.labelLoader = LabelLoader(labelFilename)
self.determineProjects()
def __init__(self, datasetDir, labelFilename='labels.txt'):
self.datasetDir = datasetDir
self.labelLoader = LabelLoader(labelFilename)
self.determineProjects()
class RankingEvaluator:
def __init__(self, datasetDir, labelFilename = 'labels.txt'):
self.datasetDir = datasetDir
self.labelLoader = LabelLoader(labelFilename)
self.determineProjects()
def generateAverageCDF(self, rankingName, reverse = False, constantLengthDict=False):
self.reverse = reverse
averageCdf = None
for p in self.projects:
(ranking, vulnerableEntries) = self.getRankingAndVulnsForProject(p, rankingName)
self.printVulnerableEntries(p, vulnerableEntries)
lengthDict = self.generateLengthDictForProject(p, constantLengthDict)
(X,Y) = self.generateCDF(ranking, vulnerableEntries, lengthDict)
print X
(X, cdf) = self.interpolate(X, Y)
if averageCdf == None:
averageCdf = cdf
else:
averageCdf += cdf
averageCdf /= len(self.projects)
return (X, averageCdf)
def generateHistograms(self, rankingName, reverse=False):
self.reverse = reverse
for p in self.projects:
self.generateHistogramsForProject(p, rankingName)
def generateHistogramsForProject(self, project, rankingName):
(ranking, vulnerableEntries) = self.getRankingAndVulnsForProject(project, rankingName)
scores = self.getScoresFromRanking(ranking)
vulnScores = self.getScoresFromRanking(vulnerableEntries)
minVulnScore = numpy.min(vulnScores)
maxVulnScore = numpy.max(vulnScores)
print 'MinVulnScore: %f' % (minVulnScore)
print 'MaxVulnScore: %f' % (maxVulnScore)
print 'nInBand: %f' % (len([s for s in scores if s >= minVulnScore and s <= maxVulnScore]))
print 'nOutOfBand: %f' % (len([s for s in scores if s < minVulnScore or s > maxVulnScore]))
import pylab
pylab.figure()
pylab.hist(scores, 1000)
pylab.figure()
pylab.hist(vulnScores, 1000)
for r in ranking:
print r
def getScoresFromRanking(self, ranking):
return [r.score for r in ranking]
def printVulnerableEntries(self, projectName, vulnerableEntries):
print projectName
for entry in vulnerableEntries: print entry
def generateGlobalCDF(self, rankingName, reverse = False, constantLengthDict = False):
self.reverse = reverse
(globalRanking, vulnerableEntries) = self.generateGlobalRanking(rankingName)
globalLengthDict = self.generateGlobalLengthDict(constantLengthDict)
(X,Y) = self.generateCDF(globalRanking, vulnerableEntries, globalLengthDict)
return (X, Y)
def generateGlobalRanking(self, rankingName):
vulnerableEntries = []
globalRanking = []
for p in self.projects:
(projectRanking, projectVulns) = self.getRankingAndVulnsForProject(p, rankingName)
globalRanking.extend(projectRanking)
vulnerableEntries.extend(projectVulns)
globalRanking.sort()
vulnerableEntries.sort()
return (globalRanking, vulnerableEntries)
def determineProjects(self):
projectIndexFilename = self.getProjectIndexFilename()
lines = file(projectIndexFilename).readlines()
self.projects = [l.replace('\n', '') for l in lines]
print self.projects
def getProjectIndexFilename(self):
return self.datasetDir + 'cleanedup'
def getRankingAndVulnsForProject(self, projectName, rankingName):
projectRanking = self.getRankingForProject(projectName, rankingName)
vulnerableEntries = self.getVulnerableEntriesForProject(projectName, projectRanking)
return (projectRanking, vulnerableEntries)
def getRankingForProject(self, project, rankingName):
rankingFilename = self.datasetDir + project + '/%s' % (rankingName)
ranking = pickle.load(file(rankingFilename))
if self.reverse:
for r in ranking: r.invert()
ranking.sort()
return ranking
def getVulnerableEntriesForProject(self, project, projectRanking):
self.labelLoader.loadLabels(project, self.datasetDir)
vulnerableEntries = self.labelLoader.getPositionsOfVulns(projectRanking)
return vulnerableEntries
def generateGlobalLengthDict(self, constantLengthDict):
lengthDict = {}
for p in self.projects:
projectLengthDict = self.generateLengthDictForProject(p, constantLengthDict)
lengthDict.update(projectLengthDict)
return lengthDict
def generateLengthDictForProject(self, projectName, constantLengthDict):
if constantLengthDict:
return self.generateConstantLengthDictForProject(projectName)
functionIndex = pickle.load(file(self.datasetDir + projectName + '/parsed/functionIndex.pickl'))
d = {}
for (unused,functionLocations) in functionIndex.d.iteritems():
for (row, location) in functionLocations:
if d.has_key(location): print 'WARN'
d[location] = self.functionLengthFromRow(row)
return d
def generateConstantLengthDictForProject(self, projectName):
functionIndex = pickle.load(file(self.datasetDir + projectName + '/parsed/functionIndex.pickl'))
d = {}
for (unused,functionLocations) in functionIndex.d.iteritems():
for (row, location) in functionLocations:
if d.has_key(location): print 'WARN'
d[location] = 1
return d
def functionLengthFromRow(self, row):
(startLine, startPos) = row[1].split(':') #@UnusedVariable
(endLine, endPos) = row[2].split(':') #@UnusedVariable
length = int(endLine) - int(startLine) + 1
return length
def rankingEntryToLocation(self, rankingEntry):
(filename, funcName, pos) = rankingEntry.position
(line, col) = pos.split(':')
return 'sourceDir/%s/%s_%s_%s' % (filename, funcName, line, col)
def generateCDF(self, ranking, vulnerableEntries, lengthDict):
nVulns = len(vulnerableEntries)
totalLinesOfCode = sum(lengthDict.values())
X = [0]
Y = [0]
nFound = 0
positions = vulnerableEntries[:]
converter = self.rankingEntryToLocation
for i in xrange(len(ranking)):
if len(positions) == 0:
continue
if positions[0] == ranking[i]:
positions.pop(0)
nFound += 1
readFunctionLinesOfCode = [lengthDict[converter(r)] for r in ranking[:i]]
linesOfCodeRead = numpy.sum(readFunctionLinesOfCode)
X.append( 100 * float(linesOfCodeRead) / totalLinesOfCode)
Y.append( 100 * float(nFound)/ nVulns)
X.append(100)
Y.append(100)
return (X,Y)
def interpolate(self, X,Y):
xvals = numpy.linspace(0,100,100)
return (xvals, numpy.interp(xvals, X, Y))
class RankingEvaluator:
def __init__(self, datasetDir, labelFilename='labels.txt'):
self.datasetDir = datasetDir
self.labelLoader = LabelLoader(labelFilename)
self.determineProjects()
def generateAverageCDF(self,
rankingName,
reverse=False,
constantLengthDict=False):
self.reverse = reverse
averageCdf = None
for p in self.projects:
(ranking, vulnerableEntries) = self.getRankingAndVulnsForProject(
p, rankingName)
self.printVulnerableEntries(p, vulnerableEntries)
lengthDict = self.generateLengthDictForProject(
p, constantLengthDict)
(X, Y) = self.generateCDF(ranking, vulnerableEntries, lengthDict)
print X
(X, cdf) = self.interpolate(X, Y)
if averageCdf == None:
averageCdf = cdf
else:
averageCdf += cdf
averageCdf /= len(self.projects)
return (X, averageCdf)
def generateHistograms(self, rankingName, reverse=False):
self.reverse = reverse
for p in self.projects:
self.generateHistogramsForProject(p, rankingName)
def generateHistogramsForProject(self, project, rankingName):
(ranking, vulnerableEntries) = self.getRankingAndVulnsForProject(
project, rankingName)
scores = self.getScoresFromRanking(ranking)
vulnScores = self.getScoresFromRanking(vulnerableEntries)
minVulnScore = numpy.min(vulnScores)
maxVulnScore = numpy.max(vulnScores)
print 'MinVulnScore: %f' % (minVulnScore)
print 'MaxVulnScore: %f' % (maxVulnScore)
print 'nInBand: %f' % (len(
[s for s in scores if s >= minVulnScore and s <= maxVulnScore]))
print 'nOutOfBand: %f' % (len(
[s for s in scores if s < minVulnScore or s > maxVulnScore]))
import pylab
pylab.figure()
pylab.hist(scores, 1000)
pylab.figure()
pylab.hist(vulnScores, 1000)
for r in ranking:
print r
def getScoresFromRanking(self, ranking):
return [r.score for r in ranking]
def printVulnerableEntries(self, projectName, vulnerableEntries):
print projectName
for entry in vulnerableEntries:
print entry
def generateGlobalCDF(self,
rankingName,
reverse=False,
constantLengthDict=False):
self.reverse = reverse
(globalRanking,
vulnerableEntries) = self.generateGlobalRanking(rankingName)
globalLengthDict = self.generateGlobalLengthDict(constantLengthDict)
(X, Y) = self.generateCDF(globalRanking, vulnerableEntries,
globalLengthDict)
return (X, Y)
def generateGlobalRanking(self, rankingName):
vulnerableEntries = []
globalRanking = []
for p in self.projects:
(projectRanking,
projectVulns) = self.getRankingAndVulnsForProject(p, rankingName)
globalRanking.extend(projectRanking)
vulnerableEntries.extend(projectVulns)
globalRanking.sort()
vulnerableEntries.sort()
return (globalRanking, vulnerableEntries)
def determineProjects(self):
projectIndexFilename = self.getProjectIndexFilename()
lines = file(projectIndexFilename).readlines()
self.projects = [l.replace('\n', '') for l in lines]
print self.projects
def getProjectIndexFilename(self):
return self.datasetDir + 'cleanedup'
def getRankingAndVulnsForProject(self, projectName, rankingName):
projectRanking = self.getRankingForProject(projectName, rankingName)
vulnerableEntries = self.getVulnerableEntriesForProject(
projectName, projectRanking)
return (projectRanking, vulnerableEntries)
def getRankingForProject(self, project, rankingName):
rankingFilename = self.datasetDir + project + '/%s' % (rankingName)
ranking = pickle.load(file(rankingFilename))
if self.reverse:
for r in ranking:
r.invert()
ranking.sort()
return ranking
def getVulnerableEntriesForProject(self, project, projectRanking):
self.labelLoader.loadLabels(project, self.datasetDir)
vulnerableEntries = self.labelLoader.getPositionsOfVulns(
projectRanking)
return vulnerableEntries
def generateGlobalLengthDict(self, constantLengthDict):
lengthDict = {}
for p in self.projects:
projectLengthDict = self.generateLengthDictForProject(
p, constantLengthDict)
lengthDict.update(projectLengthDict)
return lengthDict
def generateLengthDictForProject(self, projectName, constantLengthDict):
if constantLengthDict:
return self.generateConstantLengthDictForProject(projectName)
functionIndex = pickle.load(
file(self.datasetDir + projectName +
'/parsed/functionIndex.pickl'))
d = {}
for (unused, functionLocations) in functionIndex.d.iteritems():
for (row, location) in functionLocations:
if d.has_key(location): print 'WARN'
d[location] = self.functionLengthFromRow(row)
return d
def generateConstantLengthDictForProject(self, projectName):
functionIndex = pickle.load(
file(self.datasetDir + projectName +
'/parsed/functionIndex.pickl'))
d = {}
for (unused, functionLocations) in functionIndex.d.iteritems():
for (row, location) in functionLocations:
if d.has_key(location): print 'WARN'
d[location] = 1
return d
def functionLengthFromRow(self, row):
(startLine, startPos) = row[1].split(':') #@UnusedVariable
(endLine, endPos) = row[2].split(':') #@UnusedVariable
length = int(endLine) - int(startLine) + 1
return length
def rankingEntryToLocation(self, rankingEntry):
(filename, funcName, pos) = rankingEntry.position
(line, col) = pos.split(':')
return 'sourceDir/%s/%s_%s_%s' % (filename, funcName, line, col)
def generateCDF(self, ranking, vulnerableEntries, lengthDict):
nVulns = len(vulnerableEntries)
totalLinesOfCode = sum(lengthDict.values())
X = [0]
Y = [0]
nFound = 0
positions = vulnerableEntries[:]
converter = self.rankingEntryToLocation
for i in xrange(len(ranking)):
if len(positions) == 0:
continue
if positions[0] == ranking[i]:
positions.pop(0)
nFound += 1
readFunctionLinesOfCode = [
lengthDict[converter(r)] for r in ranking[:i]
]
linesOfCodeRead = numpy.sum(readFunctionLinesOfCode)
X.append(100 * float(linesOfCodeRead) / totalLinesOfCode)
Y.append(100 * float(nFound) / nVulns)
X.append(100)
Y.append(100)
return (X, Y)
def interpolate(self, X, Y):
xvals = numpy.linspace(0, 100, 100)
return (xvals, numpy.interp(xvals, X, Y))
