Hi, there seems to be a small but very bad bug in the f-prot scanning part of qmail-scanner.
The error codes of f-prot scanner are not evaluated correctly. Thus mail may be rejected/not delivered although scanning was quite ok. The problem is, that there are error codes (>8) that are actually only warnings. IMHO these warnings should not result in rejecting the whole mail. Example is an java .jar file. f-prot complains about that files and exits with error code 8. In the current implementation of qmail-scanner this results in: "corrupt or unknown F-Prot scanner error or memory/resource/perms problem" which is not very useful. I would recommend to throw a warning instead of exiting in that case. I attach a patch for that. For possible f-prot error codes see man page: ------><------ PROGRAM EXIT CODES 0 Normal exit. Nothing found, nothing done. 1 Unrecoverable error (e.g., missing virus signature files). 2 Selftest failed (program has been modified). 3 At least one virus-infected object was found. 4 Reserved, not currently in use. 5 Abnormal termination (scanning did not finish). 6 At least one virus was removed. 7 Error, out of memory. 8 At least one suspicious object was found. 9 At least one object was not scanned (encrypted file, unsup- ported/unknown compression method, unsupported/unknown file for- mat, corrupted or invalid file). 10 At lest one archive object was not scanned (contains more then N levels of nested archives, as specified with -archive switch). ------><------ Regards, dimaki
qmail-scanner-queue.fprot.patch
Description: attachment
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