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Bypass A/B testing by restricting user agents
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Zed
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@ -1,115 +1,69 @@
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import random, strformat, strutils
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import random, strformat, strutils, sequtils
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randomize()
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const rvs = [
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"11.0", "40.0", "42.0", "43.0", "47.0", "50.0", "52.0", "53.0", "54.0",
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"61.0", "66.0", "67.0"
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"61.0", "66.0", "67.0", "69.0", "70.0"
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]
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proc rv(): string =
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if rand(5) < 3: ""
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if rand(10) < 1: ""
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else: "; rv:" & sample(rvs)
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# OS
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const enc = ["; U", "; N", "; I", ""]
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proc linux(): string =
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const
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arch = ["i686", "x86_64"]
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distro = ["", "; Ubuntu/14.10", "; Ubuntu/16.10", "; Ubuntu/19.10", "; Ubuntu"]
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"X11; Linux " & sample(arch) & sample(distro)
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window = ["X11", "Wayland", "Unknown"]
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arch = ["i686", "x86_64", "arm"]
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distro = ["", "; Ubuntu/14.10", "; Ubuntu/16.10", "; Ubuntu/19.10",
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"; Ubuntu", "; Fedora"]
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sample(window) & sample(enc) & "; Linux " & sample(arch) & sample(distro)
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proc windows(): string =
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const
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nt = ["5.1", "5.2", "6.0", "6.1", "6.2", "6.3", "6.4", "9.0", "10.0"]
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arch = ["; WOW64", "; Win64; x64", "; ARM", ""]
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trident = ["", "; Trident/5.0", "; Trident/6.0", "; Trident/7.0"]
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"Windows " & sample(nt) & sample(arch) & sample(trident)
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"Windows " & sample(nt) & sample(enc) & sample(arch) & sample(trident)
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let macs = toSeq(6..15).mapIt($it) & @["14_4", "10_1", "9_3"]
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proc mac(): string =
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const v = ["Intel Mac OS X 10_12", "Intel Mac OS X 10_11", "Intel Mac OS X 10_10_1",
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"Intel Mac OS X 10_9_3"]
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"Macintosh; " & sample(v)
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"Macintosh; Intel Mac OS X 10_" & sample(macs) & sample(enc)
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# Browser
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const safariV = [
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"536.25", "536.26", "536.26.17", "536.28.10", "536.29.13", "536.30.1",
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"537.32", "537.36", "537.43.58", "537.73.11", "537.85.17", "537.71",
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"537.73.11", "537.75.14", "537.76.4", "537.77.4", "537.78.2",
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"537.85.17", "538.35.8", "600.6.3", "600.7.12", "601.1.56", "601.2.7",
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"601.3.9", "601.4.4", "601.5.17", "601.6.17", "601.7.1", "601.7.8",
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"602.1.50", "602.2.14", "602.3.12", "602.4.8", "603.1.30", "603.2.4",
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"603.3.8", "604.1.28"
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]
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proc appleWebKit(): string =
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"AppleWebKit/" & sample(safariV) & " (KHTML, like Gecko) "
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proc safari(): string =
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const edge = ["", "", " Edge/16.16299"]
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" Safari/" & sample(safariV) & sample(edge)
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proc chrome(): string =
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const v = [
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"41.0.2224.3", "41.0.2225.0", "41.0.2226.0", "41.0.2227.0", "41.0.2227.1",
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"41.0.2228.0", "49.0.2623.112", "57.0.2987.133", "58.0.3029.110",
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"59.0.3071.115", "61.0.3163.100", "63.0.3239.132", "63.0.3239.84",
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"64.0.3282.186", "65.0.3325.181", "67.0.3396.99", "68.0.3440.106",
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"69.0.3497.100", "70.0.3538.102", "70.0.3538.110", "70.0.3538.77",
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"72.0.3626.121", "74.0.3729.131"]
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"Chrome/" & sample(v)
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proc firefox(): string =
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const v = [
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"38.0", "40.1", "43.0", "50.0", "52.0", "53.0", "60.0", "60.0.2", "60.0.1",
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"61.0", "61.0.1", "66.0", "67.0"]
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"Gecko/20100101 Firefox/" & sample(v)
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proc presto(): string =
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const p = ["2.12.388", "2.12.407", "22.9.168"]
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const v = ["12.00", "12.14", "12.16"]
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const p = ["2.12.388", "2.12.407", "22.9.168", "2.9.201", "2.8.131", "2.7.62",
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"2.6.30", "2.5.24"]
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const v = ["10.0", "11.0", "11.1", "11.5", "11.6", "12.00", "12.14", "12.16"]
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&"Presto/{sample(p)} Version/{sample(v)}"
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proc opr(): string =
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const v = [
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"43.0.2442.991", "36.0.2130.32", "56.0.3051.52", "47.0.2631.39",
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"42.0.2393.94", "49.0.2711.0", "34.0.2036.25", "52.0.2871.99",
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"33.0.1990.115", "53.0.2907.99"
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]
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" OPR/" & sample(v)
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# Samples
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proc product(): string =
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const opera = ["Opera/9.80", "Opera/12.0"]
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if rand(10) < 8: "Mozilla/5.0"
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if rand(20) < 1: "Mozilla/5.0"
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else: sample(opera)
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proc os(): string =
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let r = rand(10)
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let os =
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case rand(2)
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of 0: linux()
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of 1: windows()
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if r < 6: windows()
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elif r < 9: linux()
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else: mac()
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&"({os}{rv()})"
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proc browser(os: string; prod: string): string =
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if "Opera" in prod:
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if rand(1) == 0: return presto()
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else: return appleWebKit() & chrome() & safari() & opr()
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if "X11" in os and "rv" notin os:
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return appleWebKit() & chrome() & safari()
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let r = rand(100)
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if r < 5: "like Gecko"
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elif r < 50: appleWebKit() & chrome() & safari()
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else: firefox()
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proc browser(prod: string): string =
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if "Opera" in prod: presto()
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else: "like Gecko"
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# Agent
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proc getAgent*(): string =
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let prod = product()
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let os = os()
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result = &"{prod} {os} {browser(os, prod)}"
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&"{prod} {os()} {browser(prod)}"
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