def taint x x end def sink x puts x end def positional(p1, p2) sink p1 # $ hasValueFlow=1 $ hasValueFlow=16 $ hasValueFlow=18 $ hasValueFlow=61 sink p2 # $ hasValueFlow=2 $ hasValueFlow=19 $ hasValueFlow=61 $ MISSING: hasValueFlow=17 end positional(taint(1), taint(2)) def keyword(p1:, p2:) sink p1 # $ hasValueFlow=3 $ hasValueFlow=6 $ hasValueFlow=8 $ hasValueFlow=16 sink p2 # $ hasValueFlow=4 $ hasValueFlow=5 $ hasValueFlow=7 $ hasValueFlow=17 end keyword(p1: taint(3), p2: taint(4)) keyword(p2: taint(5), p1: taint(6)) keyword(:p2 => taint(7), :p1 => taint(8)) def kwargs(p1:, **kwargs) sink p1 # $ hasValueFlow=9 $ hasValueFlow=13 $ hasValueFlow=14 sink (kwargs[:p1]) sink (kwargs[:p2]) # $ hasValueFlow=10 $ hasValueFlow=15 sink (kwargs[:p3]) # $ hasValueFlow=11 $ hasValueFlow=12 sink (kwargs[:p4]) end kwargs(p1: taint(9), p2: taint(10), p3: taint(11), p4: "") args = { p3: taint(12), p4: "" } kwargs(p1: taint(13), **args) args = {:p1 => taint(14), :p2 => taint(15) } kwargs(**args) args = {:p1 => taint(16) } keyword(p2: taint(17), **args) args = [taint(17)] positional(taint(16), *args) args = [taint(18), taint(19)] positional(*args) def posargs(p1, *posargs) sink p1 # $ hasValueFlow=20 $ hasValueFlow=23 $ hasValueFlow=24 sink (posargs[0]) # $ hasValueFlow=22 $ hasValueFlow=21 $ MISSING: hasValueFlow=25 sink (posargs[1]) end posargs(taint(20), taint(21)) args = [taint(22)] posargs(taint(23), *args) args = [taint(24), taint(25)] posargs(*args) args = taint(26) def splatstuff(*x) sink x[0] # $ hasValueFlow=26 end splatstuff(*args) def splatmid(x, y, *z, w, r) sink x # $ hasValueFlow=27 $ hasValueFlow=32 $ hasValueFlow=45 sink y # $ hasValueFlow=28 $ hasValueFlow=46 $ MISSING: hasValueFlow=33 sink z[0] # MISSING: $ hasValueFlow=47 $ hasValueFlow=29 $ hasValueFlow=34 sink z[1] # $ MISSING: hasValueFlow=48 $ hasValueFlow=35 sink w # $ hasValueFlow=30 $ hasValueFlow=50 $ MISSING: hasValueFlow=36 sink r # $ hasValueFlow=31 $ hasValueFlow=51 $ MISSING: hasValueFlow=37 end splatmid(taint(27), taint(28), taint(29), taint(30), taint(31)) args = [taint(33), taint(34), taint(35), taint(36)] splatmid(taint(32), *args, taint(37)) def pos_many(t, u, v, w, x, y, z) sink t # $ hasValueFlow=38 $ hasValueFlow=66 sink u # $ hasValueFlow=39 $ hasValueFlow=67 $ SPURIOUS: hasValueFlow=68 sink v # $ MISSING: hasValueFlow=40 sink w # $ MISSING: hasValueFlow=41 $ SPURIOUS: hasValueFlow=44 sink x # $ MISSING: hasValueFlow=42 sink y # $ MISSING: hasValueFlow=43 sink z # $ MISSING: hasValueFlow=44 end args = [taint(40), taint(41), taint(42), taint(43)] pos_many(taint(38), taint(39), *args, taint(44)) splatmid(taint(45), taint(46), *[taint(47), taint(48), taint(49)], taint(50), taint(51)) def splatmidsmall(a, *splats, b) sink a # $ hasValueFlow=52 $ hasValueFlow=55 sink splats[0] # $ MISSING: hasValueFlow=53 sink splats[1] # $ MISSING: hasValueFlow=54 sink b # $ hasValueFlow=57 end splatmidsmall(taint(52), *[taint(53), taint(54)]) splatmidsmall(taint(55), taint(56), taint(57)) def splat_followed_by_keyword_param(a, *b, c:) sink a # $ hasValueFlow=58 sink b[0] # $ hasValueFlow=59 sink c # $ hasValueFlow=60 end splat_followed_by_keyword_param(taint(58), taint(59), c: taint(60)) x = [] x[some_index()] = taint(61) positional(*x) def destruct((a,b), (c,(d,e))) sink a # $ MISSING: hasValueFlow=62 sink b # $ MISSING: hasValueFlow=63 sink c # $ MISSING: hasValueFlow=64 sink d sink e # $ MISSING: hasValueFlow=65 end destruct([taint(62), taint(63)], [taint(64), [0, taint(65)]]) args = [taint(66), taint(67)] pos_many(*args, taint(68), nil, nil, nil, nil) def splatall(*args) sink args[1] # $ hasValueFlow=70 end splatall(*[taint(69), taint(70), taint(71)])