Add sanity checks in fetch() and digestgen() to automatically detect and handle inval...

svn path=/main/branches/2.1.2/; revision=7040

diff --git a/pym/portage.py b/pym/portage.py
index 79bb3ca0b98472aeb21fd4c6e9ba03303e663898..9f5818b95f5e84e2bc88e5dac286f7fd956c20c0 100644 (file)
--- a/pym/portage.py
+++ b/pym/portage.py
@@ -2590,7 +2590,16 @@ def fetch(myuris, mysettings, listonly=0, fetchonly=0, locks_in_subdir=".locks",
                                                if not os.access(myfile_path, os.R_OK):
                                                        writemsg("!!! Failed to adjust permissions:" + \
                                                                " %s\n" % str(e), noiselevel=-1)
-                                       if myfile not in mydigests:
+
+                                       # If the file is empty then it's obviously invalid. Remove
+                                       # the empty file and try to download if possible.
+                                       if mystat.st_size == 0:
+                                               if can_fetch:
+                                                       try:
+                                                               os.unlink(myfile_path)
+                                                       except EnvironmentError:
+                                                               pass
+                                       elif myfile not in mydigests:
                                                # We don't have a digest, but the file exists.  We must
                                                # assume that it is fully downloaded.
                                                continue
@@ -2714,6 +2723,17 @@ def fetch(myuris, mysettings, listonly=0, fetchonly=0, locks_in_subdir=".locks",
                                                                writemsg("!!! Failed to adjust permissions:" + \
                                                                        " %s\n" % str(e), noiselevel=-1)
 
+                                       # If the file is empty then it's obviously invalid.  Don't
+                                       # trust the return value from the fetcher.  Remove the
+                                       # empty file and try to download again.
+                                       try:
+                                               if os.stat(myfile_path).st_size == 0:
+                                                       os.unlink(myfile_path)
+                                                       fetched = 0
+                                                       continue
+                                       except EnvironmentError:
+                                               pass
+
                                        if mydigests!=None and mydigests.has_key(myfile):
                                                try:
                                                        mystat = os.stat(myfile_path)
@@ -2852,12 +2872,16 @@ def digestgen(myarchives, mysettings, overwrite=1, manifestonly=0, myportdb=None
                        missing_files = []
                        for myfile in missing_hashes:
                                try:
-                                       os.stat(os.path.join(mysettings["DISTDIR"], myfile))
+                                       st = os.stat(os.path.join(mysettings["DISTDIR"], myfile))
                                except OSError, e:
                                        if e.errno != errno.ENOENT:
                                                raise
                                        del e
                                        missing_files.append(myfile)
+                               else:
+                                       # If the file is empty then it's obviously invalid.
+                                       if st.st_size == 0:
+                                               missing_files.append(myfile)
                        if missing_files:
                                mytree = os.path.realpath(os.path.dirname(
                                        os.path.dirname(mysettings["O"])))