summary refs log tree commit diff stats
path: root/tests/async/t9201.nim
diff options
context:
space:
mode:
Diffstat (limited to 'tests/async/t9201.nim')
-rw-r--r--tests/async/t9201.nim14
1 files changed, 14 insertions, 0 deletions
diff --git a/tests/async/t9201.nim b/tests/async/t9201.nim
new file mode 100644
index 000000000..5aaba7063
--- /dev/null
+++ b/tests/async/t9201.nim
@@ -0,0 +1,14 @@
+discard """
+  exitcode: 0
+"""
+
+# Derived from issue #9201
+import asyncdispatch, macros
+
+macro newAsyncProc(name: untyped): untyped =
+  expectKind name, nnkStrLit
+  let pName = genSym(nskProc, name.strVal)
+  result = getAst async quote do:
+    proc `pName`() = discard
+
+newAsyncProc("hello")
generated by cgit-pink 1.4.1-2-gfad0 (git 2.36.2.497.gbbea4dcf42) at 2025-01-27 04:58:08 +0000
9 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 
#
#
#           The Nim Compiler
#        (c) Copyright 2015 Nim Contributors
#
#    See the file "copying.txt", included in this
#    distribution, for details about the copyright.
#

import strutils

const Sha1DigestSize = 20

type
  Sha1Digest = array[0 .. Sha1DigestSize-1, uint8]
  SecureHash* = distinct Sha1Digest

# Copyright (c) 2011, Micael Hildenborg
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
# * Redistributions of source code must retain the above copyright
#   notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright
#   notice, this list of conditions and the following disclaimer in the
#   documentation and/or other materials provided with the distribution.
# * Neither the name of Micael Hildenborg nor the
#   names of its contributors may be used to endorse or promote products
#   derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY Micael Hildenborg ''AS IS'' AND ANY
# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL Micael Hildenborg BE LIABLE FOR ANY
# DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# Ported to Nim by Erik O'Leary

type
  Sha1State* = array[0 .. 5-1, uint32]
  Sha1Buffer = array[0 .. 80-1, uint32]

template clearBuffer(w: Sha1Buffer, len = 16) =
  zeroMem(addr(w), len * sizeof(uint32))

proc init*(result: var Sha1State) =
  result[0] = 0x67452301'u32
  result[1] = 0xefcdab89'u32
  result[2] = 0x98badcfe'u32
  result[3] = 0x10325476'u32
  result[4] = 0xc3d2e1f0'u32

proc innerHash(state: var Sha1State, w: var Sha1Buffer) =
  var
    a = state[0]
    b = state[1]
    c = state[2]
    d = state[3]
    e = state[4]

  var round = 0

  template rot(value, bits: uint32): uint32 =
    (value shl bits) or (value shr (32 - bits))

  template sha1(fun, val: uint32) =
    let t = rot(a, 5) + fun + e + val + w[round]
    e = d
    d = c
    c = rot(b, 30)
    b = a
    a = t

  template process(body: untyped) =
    w[round] = rot(w[round - 3] xor w[round - 8] xor w[round - 14] xor w[round - 16], 1)
    body
    inc(round)

  template wrap(dest, value: untyped) =
    let v = dest + value
    dest = v

  while round < 16:
    sha1((b and c) or (not b and d), 0x5a827999'u32)
    inc(round)

  while round < 20:
    process:
      sha1((b and c) or (not b and d), 0x5a827999'u32)

  while round < 40:
    process:
      sha1(b xor c xor d, 0x6ed9eba1'u32)

  while round < 60:
    process:
      sha1((b and c) or (b and d) or (c and d), 0x8f1bbcdc'u32)

  while round < 80:
    process:
      sha1(b xor c xor d, 0xca62c1d6'u32)

  wrap state[0], a
  wrap state[1], b
  wrap state[2], c
  wrap state[3], d
  wrap state[4], e

proc sha1(src: cstring; len: int): Sha1Digest =
  #Initialize state
  var state: Sha1State
  init(state)

  #Create w buffer
  var w: Sha1Buffer

  #Loop through all complete 64byte blocks.
  let byteLen = len
  let endOfFullBlocks = byteLen - 64
  var endCurrentBlock = 0
  var currentBlock = 0

  while currentBlock <= endOfFullBlocks:
    endCurrentBlock = currentBlock + 64

    var i = 0
    while currentBlock < endCurrentBlock:
      w[i] = uint32(src[currentBlock+3]) or
             uint32(src[currentBlock+2]) shl 8'u32 or
             uint32(src[currentBlock+1]) shl 16'u32 or
             uint32(src[currentBlock])   shl 24'u32
      currentBlock += 4
      inc(i)

    innerHash(state, w)

  #Handle last and not full 64 byte block if existing
  endCurrentBlock = byteLen - currentBlock
  clearBuffer(w)
  var lastBlockBytes = 0

  while lastBlockBytes < endCurrentBlock:

    var value = uint32(src[lastBlockBytes + currentBlock]) shl
                ((3'u32 - uint32(lastBlockBytes and 3)) shl 3)

    w[lastBlockBytes shr 2] = w[lastBlockBytes shr 2] or value
    inc(lastBlockBytes)

  w[lastBlockBytes shr 2] = w[lastBlockBytes shr 2] or (
    0x80'u32 shl ((3'u32 - uint32(lastBlockBytes and 3)) shl 3)
  )

  if endCurrentBlock >= 56:
    innerHash(state, w)
    clearBuffer(w)

  w[15] = uint32(byteLen) shl 3
  innerHash(state, w)

  # Store hash in result pointer, and make sure we get in in the correct order
  # on both endian models.
  for i in 0 .. Sha1DigestSize-1:
    result[i] = uint8((int(state[i shr 2]) shr ((3-(i and 3)) * 8)) and 255)

proc sha1(src: string): Sha1Digest =
  ## Calculate SHA1 from input string
  sha1(src, src.len)

proc secureHash*(str: string): SecureHash = SecureHash(sha1(str))
proc secureHashFile*(filename: string): SecureHash = secureHash(readFile(filename))
proc `$`*(self: SecureHash): string =
  result = ""
  for v in Sha1Digest(self):
    result.add(toHex(int(v), 2))

proc parseSecureHash*(hash: string): SecureHash =
  for i in 0 ..< Sha1DigestSize:
    Sha1Digest(result)[i] = uint8(parseHexInt(hash[i*2] & hash[i*2 + 1]))

proc `==`*(a, b: SecureHash): bool =
  # Not a constant-time comparison, but that's acceptable in this context
  Sha1Digest(a) == Sha1Digest(b)


when isMainModule:
  let hash1 = secureHash("a93tgj0p34jagp9[agjp98ajrhp9aej]")
  doAssert hash1 == hash1
  doAssert parseSecureHash($hash1) == hash1