bitbake: fetch2: Add checksum capability for crate fetcher

This change brings checksum verification of each crate
in a recipe, e.g

| SRC_URI += " \
|     crate://crates.io/aho-corasick/0.7.20 \
|     crate://crates.io/atomic-waker/1.1.0 \
|     crate://crates.io/cc/1.0.79 \
| "
|
| SRC_URI[aho-corasick.sha256sum] = "cc936419f96fa211c1b9166887b38e5e40b19958e5b895be7c1f93adec7071ac"
| SRC_URI[atomic-waker.sha256sum] = "debc29dde2e69f9e47506b525f639ed42300fc014a3e007832592448fa8e4599"
| SRC_URI[cc.sha256sum] = "50d30906286121d95be3d479533b458f87493b30a4b5f79a607db8f5d11aa91f"

That will require to move the checksum initialization
after the possible call to urldata_init method in order
for the crate fetcher to parse the url.

Another way of doing could have been implementing a decodeurl
method that would have been specific for each fetcher class.

(Bitbake rev: 4920686c13dd66f9bfa4f7dd38d6e955f153eeec)

Signed-off-by: Frederic Martinsons <frederic.martinsons@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/fetch2/__init__.py

@@ -1295,18 +1295,13 @@ class FetchData(object):
 
             if checksum_name in self.parm:
                 checksum_expected = self.parm[checksum_name]
-            elif self.type not in ["http", "https", "ftp", "ftps", "sftp", "s3", "az"]:
+            elif self.type not in ["http", "https", "ftp", "ftps", "sftp", "s3", "az", "crate"]:
                 checksum_expected = None
             else:
                 checksum_expected = d.getVarFlag("SRC_URI", checksum_name)
 
             setattr(self, "%s_expected" % checksum_id, checksum_expected)
 
-        for checksum_id in CHECKSUM_LIST:
-            configure_checksum(checksum_id)
-
-        self.ignore_checksums = False
-
         self.names = self.parm.get("name",'default').split(',')
 
         self.method = None
@@ -1328,6 +1323,11 @@ class FetchData(object):
         if hasattr(self.method, "urldata_init"):
             self.method.urldata_init(self, d)
 
+        for checksum_id in CHECKSUM_LIST:
+            configure_checksum(checksum_id)
+
+        self.ignore_checksums = False
+
         if "localpath" in self.parm:
             # if user sets localpath for file, use it instead.
             self.localpath = self.parm["localpath"]

bitbake/lib/bb/tests/fetch.py

@@ -2377,6 +2377,13 @@ class CrateTest(FetcherTest):
         d = self.d
 
         fetcher = bb.fetch2.Fetch(uris, self.d)
+        ud = fetcher.ud[fetcher.urls[0]]
+
+        self.assertIn("name", ud.parm)
+        self.assertEqual(ud.parm["name"], "glob")
+        self.assertIn("downloadfilename", ud.parm)
+        self.assertEqual(ud.parm["downloadfilename"], "glob-0.2.11.crate")
+
         fetcher.download()
         fetcher.unpack(self.tempdir)
         self.assertEqual(sorted(os.listdir(self.tempdir)), ['cargo_home', 'download' , 'unpacked'])
@@ -2418,6 +2425,19 @@ class CrateTest(FetcherTest):
         d = self.d
 
         fetcher = bb.fetch2.Fetch(uris, self.d)
+        ud = fetcher.ud[fetcher.urls[0]]
+
+        self.assertIn("name", ud.parm)
+        self.assertEqual(ud.parm["name"], "glob")
+        self.assertIn("downloadfilename", ud.parm)
+        self.assertEqual(ud.parm["downloadfilename"], "glob-0.2.11.crate")
+
+        ud = fetcher.ud[fetcher.urls[1]]
+        self.assertIn("name", ud.parm)
+        self.assertEqual(ud.parm["name"], "time")
+        self.assertIn("downloadfilename", ud.parm)
+        self.assertEqual(ud.parm["downloadfilename"], "time-0.1.35.crate")
+
         fetcher.download()
         fetcher.unpack(self.tempdir)
         self.assertEqual(sorted(os.listdir(self.tempdir)), ['cargo_home', 'download' , 'unpacked'])
@@ -2427,6 +2447,18 @@ class CrateTest(FetcherTest):
         self.assertTrue(os.path.exists(self.tempdir + "/cargo_home/bitbake/time-0.1.35/.cargo-checksum.json"))
         self.assertTrue(os.path.exists(self.tempdir + "/cargo_home/bitbake/time-0.1.35/src/lib.rs"))
 
+    @skipIfNoNetwork()
+    def test_crate_incorrect_cksum(self):
+        uri = "crate://crates.io/aho-corasick/0.7.20"
+        self.d.setVar('SRC_URI', uri)
+        self.d.setVarFlag("SRC_URI", "aho-corasick.sha256sum", hashlib.sha256("Invalid".encode("utf-8")).hexdigest())
+
+        uris = self.d.getVar('SRC_URI').split()
+
+        fetcher = bb.fetch2.Fetch(uris, self.d)
+        with self.assertRaisesRegexp(bb.fetch2.FetchError, "Fetcher failure for URL"):
+            fetcher.download()
+
 class NPMTest(FetcherTest):
     def skipIfNoNpm():
         import shutil