summaryrefslogtreecommitdiffstats
path: root/meta/lib/oe/spdx.py
blob: a99e54ff404b20d5d7ad2d2286d7c72aff726875 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
#
# SPDX-License-Identifier: GPL-2.0-only
#

import hashlib
import itertools
import json

SPDX_VERSION = "2.2"


class _Property(object):
    def __init__(self, *, default=None):
        self.default = default

    def setdefault(self, dest, name):
        if self.default is not None:
            dest.setdefault(name, self.default)


class _String(_Property):
    def __init__(self, **kwargs):
        super().__init__(**kwargs)

    def set_property(self, attrs, name):
        def get_helper(obj):
            return obj._spdx[name]

        def set_helper(obj, value):
            obj._spdx[name] = value

        def del_helper(obj):
            del obj._spdx[name]

        attrs[name] = property(get_helper, set_helper, del_helper)

    def init(self, source):
        return source


class _Object(_Property):
    def __init__(self, cls, **kwargs):
        super().__init__(**kwargs)
        self.cls = cls

    def set_property(self, attrs, name):
        def get_helper(obj):
            if not name in obj._spdx:
                obj._spdx[name] = self.cls()
            return obj._spdx[name]

        def set_helper(obj, value):
            obj._spdx[name] = value

        def del_helper(obj):
            del obj._spdx[name]

        attrs[name] = property(get_helper, set_helper)

    def init(self, source):
        return self.cls(**source)


class _ListProperty(_Property):
    def __init__(self, prop, **kwargs):
        super().__init__(**kwargs)
        self.prop = prop

    def set_property(self, attrs, name):
        def get_helper(obj):
            if not name in obj._spdx:
                obj._spdx[name] = []
            return obj._spdx[name]

        def del_helper(obj):
            del obj._spdx[name]

        attrs[name] = property(get_helper, None, del_helper)

    def init(self, source):
        return [self.prop.init(o) for o in source]


class _StringList(_ListProperty):
    def __init__(self, **kwargs):
        super().__init__(_String(), **kwargs)


class _ObjectList(_ListProperty):
    def __init__(self, cls, **kwargs):
        super().__init__(_Object(cls), **kwargs)


class MetaSPDXObject(type):
    def __new__(mcls, name, bases, attrs):
        attrs["_properties"] = {}

        for key in attrs.keys():
            if isinstance(attrs[key], _Property):
                prop = attrs[key]
                attrs["_properties"][key] = prop
                prop.set_property(attrs, key)

        return super().__new__(mcls, name, bases, attrs)


class SPDXObject(metaclass=MetaSPDXObject):
    def __init__(self, **d):
        self._spdx = {}

        for name, prop in self._properties.items():
            prop.setdefault(self._spdx, name)
            if name in d:
                self._spdx[name] = prop.init(d[name])

    def serializer(self):
        return self._spdx

    def __setattr__(self, name, value):
        if name in self._properties or name == "_spdx":
            super().__setattr__(name, value)
            return
        raise KeyError("%r is not a valid SPDX property" % name)


class SPDXAnnotation(SPDXObject):
    annotationDate = _String()
    annotationType = _String()
    annotator = _String()
    comment = _String()

class SPDXChecksum(SPDXObject):
    algorithm = _String()
    checksumValue = _String()


class SPDXRelationship(SPDXObject):
    spdxElementId = _String()
    relatedSpdxElement = _String()
    relationshipType = _String()
    comment = _String()


class SPDXExternalReference(SPDXObject):
    referenceCategory = _String()
    referenceType = _String()
    referenceLocator = _String()


class SPDXPackageVerificationCode(SPDXObject):
    packageVerificationCodeValue = _String()
    packageVerificationCodeExcludedFiles = _StringList()


class SPDXPackage(SPDXObject):
    name = _String()
    SPDXID = _String()
    versionInfo = _String()
    downloadLocation = _String(default="NOASSERTION")
    packageSupplier = _String(default="NOASSERTION")
    homepage = _String()
    licenseConcluded = _String(default="NOASSERTION")
    licenseDeclared = _String(default="NOASSERTION")
    summary = _String()
    description = _String()
    sourceInfo = _String()
    copyrightText = _String(default="NOASSERTION")
    licenseInfoFromFiles = _StringList(default=["NOASSERTION"])
    externalRefs = _ObjectList(SPDXExternalReference)
    packageVerificationCode = _Object(SPDXPackageVerificationCode)
    hasFiles = _StringList()
    packageFileName = _String()
    annotations = _ObjectList(SPDXAnnotation)


class SPDXFile(SPDXObject):
    SPDXID = _String()
    fileName = _String()
    licenseConcluded = _String(default="NOASSERTION")
    copyrightText = _String(default="NOASSERTION")
    licenseInfoInFiles = _StringList(default=["NOASSERTION"])
    checksums = _ObjectList(SPDXChecksum)
    fileTypes = _StringList()


class SPDXCreationInfo(SPDXObject):
    created = _String()
    licenseListVersion = _String()
    comment = _String()
    creators = _StringList()


class SPDXExternalDocumentRef(SPDXObject):
    externalDocumentId = _String()
    spdxDocument = _String()
    checksum = _Object(SPDXChecksum)


class SPDXExtractedLicensingInfo(SPDXObject):
    name = _String()
    comment = _String()
    licenseId = _String()
    extractedText = _String()


class SPDXDocument(SPDXObject):
    spdxVersion = _String(default="SPDX-" + SPDX_VERSION)
    dataLicense = _String(default="CC0-1.0")
    SPDXID = _String(default="SPDXRef-DOCUMENT")
    name = _String()
    documentNamespace = _String()
    creationInfo = _Object(SPDXCreationInfo)
    packages = _ObjectList(SPDXPackage)
    files = _ObjectList(SPDXFile)
    relationships = _ObjectList(SPDXRelationship)
    externalDocumentRefs = _ObjectList(SPDXExternalDocumentRef)
    hasExtractedLicensingInfos = _ObjectList(SPDXExtractedLicensingInfo)

    def __init__(self, **d):
        super().__init__(**d)

    def to_json(self, f, *, sort_keys=False, indent=None, separators=None):
        class Encoder(json.JSONEncoder):
            def default(self, o):
                if isinstance(o, SPDXObject):
                    return o.serializer()

                return super().default(o)

        sha1 = hashlib.sha1()
        for chunk in Encoder(
            sort_keys=sort_keys,
            indent=indent,
            separators=separators,
        ).iterencode(self):
            chunk = chunk.encode("utf-8")
            f.write(chunk)
            sha1.update(chunk)

        return sha1.hexdigest()

    @classmethod
    def from_json(cls, f):
        return cls(**json.load(f))

    def add_relationship(self, _from, relationship, _to, *, comment=None):
        if isinstance(_from, SPDXObject):
            from_spdxid = _from.SPDXID
        else:
            from_spdxid = _from

        if isinstance(_to, SPDXObject):
            to_spdxid = _to.SPDXID
        else:
            to_spdxid = _to

        r = SPDXRelationship(
            spdxElementId=from_spdxid,
            relatedSpdxElement=to_spdxid,
            relationshipType=relationship,
        )

        if comment is not None:
            r.comment = comment

        self.relationships.append(r)

    def find_by_spdxid(self, spdxid):
        for o in itertools.chain(self.packages, self.files):
            if o.SPDXID == spdxid:
                return o
        return None

    def find_external_document_ref(self, namespace):
        for r in self.externalDocumentRefs:
            if r.spdxDocument == namespace:
                return r
        return None