toaster: Rationalise mimetype guessing to fix artifact downloads

Artifact download links were broken because the function to
get the mimetype for the artifact was incorrectly using the
underlying mimetype library. The function was also attached
to the build environment controller, which was unnecessary, as
we only support local controllers anyway.

Remove the mimetype getter on the build environment and
use the one in the view code instead. This works correctly
and prevents the download error from occurring.

[YOCTO #8369]

Signed-off-by: Elliot Smith <elliot.smith@intel.com>
Signed-off-by: brian avery <avery.brian@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 1 insertions, 35 deletions

diff --git a/lib/toaster/bldcontrol/models.py b/lib/toaster/bldcontrol/models.py
index f2493a842..ab4110530 100644
--- a/lib/toaster/bldcontrol/models.py
+++ b/lib/toaster/bldcontrol/models.py
@@ -39,40 +39,6 @@ class BuildEnvironment(models.Model):
     created     = models.DateTimeField(auto_now_add = True)
     updated     = models.DateTimeField(auto_now = True)
 
-
-    def get_artifact_type(self, path):
-        if self.betype == BuildEnvironment.TYPE_LOCAL:
-            try:
-                import magic
-
-                # fair warning: this is a mess; there are multiple competeing and incompatible
-                # magic modules floating around, so we try some of the most common combinations
-
-                try:    # we try ubuntu's python-magic 5.4
-                    m = magic.open(magic.MAGIC_MIME_TYPE)
-                    m.load()
-                    return m.file(path)
-                except AttributeError:
-                    pass
-
-                try:    # we try python-magic 0.4.6
-                    m = magic.Magic(magic.MAGIC_MIME)
-                    return m.from_file(path)
-                except AttributeError:
-                    pass
-
-                try:    # we try pip filemagic 1.6
-                    m = magic.Magic(flags=magic.MAGIC_MIME_TYPE)
-                    return m.id_filename(path)
-                except AttributeError:
-                    pass
-
-                return "binary/octet-stream"
-            except ImportError:
-                return "binary/octet-stream"
-        raise Exception("FIXME: artifact type not implemented for build environment type %s" % self.get_betype_display())
-
-
     def get_artifact(self, path):
         if self.betype == BuildEnvironment.TYPE_LOCAL:
             return open(path, "r")
diff --git a/lib/toaster/toastergui/views.py b/lib/toaster/toastergui/views.py
index 6e5815595..839ee78f9 100755
--- a/lib/toaster/toastergui/views.py
+++ b/lib/toaster/toastergui/views.py
@@ -2981,7 +2981,7 @@ if True:
             if file_name is None:
                 raise Exception("Could not handle artifact %s id %s" % (artifact_type, artifact_id))
             else:
-                content_type = b.buildrequest.environment.get_artifact_type(file_name)
+                content_type = MimeTypeFinder.get_mimetype(file_name)
                 fsock = b.buildrequest.environment.get_artifact(file_name)
                 file_name = os.path.basename(file_name) # we assume that the build environment system has the same path conventions as host