[PATCH 2/2] scripts/install-buildtools: write download URLs to files for traceability

[Alexander Kanavin <alex.kanavin@gmail.com>]

From: Alexander Kanavin <alex@linutronix.de>

This extends the previous commit, so that download URLs are preserved
in addition to actual artefacts. By default it's all written to a temporary
directory and erased together with artefacts, but users can choose
to preserve both:

$ install-buildtools -D --keep-downloads-directory=.
...

$ ls -1
buildtools_url
check_url
x86_64-buildtools-extended-nativesdk-standalone-5.1.2.sh
x86_64-buildtools-extended-nativesdk-standalone-5.1.2.sh.sha256sum

Signed-off-by: Alexander Kanavin <alex@linutronix.de>
---
 scripts/install-buildtools | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/scripts/install-buildtools b/scripts/install-buildtools
index 1a68aad53e7..7bd6556edf6 100755
--- a/scripts/install-buildtools
+++ b/scripts/install-buildtools
@@ -243,6 +243,8 @@ def main():
         # Fetch installer
         logger.info("Fetching buildtools installer")
         tmpbuildtools = os.path.join(sdk_dir, filename)
+        with open(os.path.join(sdk_dir, 'buildtools_url'), 'w') as f:
+            f.write(buildtools_url)
         ret = subprocess.call("wget -q -O %s %s" %
                               (tmpbuildtools, buildtools_url), shell=True)
         if ret != 0:
@@ -256,6 +258,8 @@ def main():
             check_url = "{}.{}".format(buildtools_url, checksum_type)
             checksum_filename = "{}.{}".format(filename, checksum_type)
             tmpbuildtools_checksum = os.path.join(sdk_dir, checksum_filename)
+            with open(os.path.join(sdk_dir, 'check_url'), 'w') as f:
+                f.write(check_url)
             ret = subprocess.call("wget -q -O %s %s" %
                                     (tmpbuildtools_checksum, check_url), shell=True)
             if ret != 0:
-- 
2.39.5