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Nmap now does better OS detection guesses when there isn't an exact match because it uses the point system (MatchPoints) now given in nmap-os-db

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fyodor
2006-09-25 09:08:56 +00:00
parent aee73b577b
commit f1440dfc89
6 changed files with 141 additions and 64 deletions
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30
osscan.h
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@@ -114,6 +114,7 @@
/* We won't even consider matches with a lower accuracy than this */
#define OSSCAN_GUESS_THRESHOLD 0.85
/********************** STRUCTURES ***********************************/
/* moved to global_structures.h */
@@ -128,26 +129,31 @@ char *fp2ascii(FingerPrint *FP);
complete since it is used by scripts such as scripts/fingerwatch for
which some partial fingerpritns are OK. */
FingerPrint *parse_single_fingerprint(char *fprint_orig);
FingerPrint **parse_fingerprint_file(char *fname);
FingerPrint **parse_fingerprint_reference_file(char *dbname);
void free_fingerprint_file(FingerPrint **FPs);
/* These functions take a file/db name and open+parse it, returning an
(allocated) FingerPrintDB containing the results. They exit with
an error message in the case of error. */
FingerPrintDB *parse_fingerprint_file(char *fname);
FingerPrintDB *parse_fingerprint_reference_file(char *dbname);
void free_fingerprint_file(FingerPrintDB *DB);
/* Compares 2 fingerprints -- a referenceFP (can have expression
attributes) with an observed fingerprint (no expressions). If
verbose is nonzero, differences will be printed. The comparison
accuracy (between 0 and 1) is returned) */
accuracy (between 0 and 1) is returned). If MatchPoints is not NULL, it is
a special "fingerprints" which tells how many points each test is worth. */
double compare_fingerprints(FingerPrint *referenceFP, FingerPrint *observedFP,
int verbose);
FingerPrint *MatchPoints, int verbose);
/* Takes a fingerprint and looks for matches inside reference_FPs[].
The results are stored in in FPR (which must point to an instantiated
FingerPrintResults class) -- results will be reverse-sorted by
accuracy. No results below accuracy_threshhold will be included.
The max matches returned is the maximum that fits in a
FingerPrintResults class. */
/* Takes a fingerprint and looks for matches inside the passed in
reference fingerprint DB. The results are stored in in FPR (which
must point to an instantiated FingerPrintResults class) -- results
will be reverse-sorted by accuracy. No results below
accuracy_threshhold will be included. The max matches returned is
the maximum that fits in a FingerPrintResults class. */
void match_fingerprint(FingerPrint *FP, FingerPrintResults *FPR,
FingerPrint **reference_FPs, double accuracy_threshold);
FingerPrintDB *DB, double accuracy_threshold);
/* Returns true if perfect match -- if num_subtests & num_subtests_succeeded are non_null it updates them. if shortcircuit is zero, it does all the tests, otherwise it returns when the first one fails */