t/t7510-signed-commit.sh

   1 #!/bin/sh
   2
   3 test_description='signed commit tests'
   4 . ./test-lib.sh
   5 . "$TEST_DIRECTORY/lib-gpg.sh"
   6
   7 test_expect_success GPG 'create signed commits' '
   8         test_when_finished "test_unconfig commit.gpgsign" &&
   9
  10         echo 1 >file && git add file &&
  11         test_tick && git commit -S -m initial &&
  12         git tag initial &&
  13         git branch side &&
  14
  15         echo 2 >file && test_tick && git commit -a -S -m second &&
  16         git tag second &&
  17
  18         git checkout side &&
  19         echo 3 >elif && git add elif &&
  20         test_tick && git commit -m "third on side" &&
  21
  22         git checkout master &&
  23         test_tick && git merge -S side &&
  24         git tag merge &&
  25
  26         echo 4 >file && test_tick && git commit -a -m "fourth unsigned" &&
  27         git tag fourth-unsigned &&
  28
  29         test_tick && git commit --amend -S -m "fourth signed" &&
  30         git tag fourth-signed &&
  31
  32         git config commit.gpgsign true &&
  33         echo 5 >file && test_tick && git commit -a -m "fifth signed" &&
  34         git tag fifth-signed &&
  35
  36         git config commit.gpgsign false &&
  37         echo 6 >file && test_tick && git commit -a -m "sixth" &&
  38         git tag sixth-unsigned &&
  39
  40         git config commit.gpgsign true &&
  41         echo 7 >file && test_tick && git commit -a -m "seventh" --no-gpg-sign &&
  42         git tag seventh-unsigned &&
  43
  44         test_tick && git rebase -f HEAD^^ && git tag sixth-signed HEAD^ &&
  45         git tag seventh-signed &&
  46
  47         echo 8 >file && test_tick && git commit -a -m eighth -SB7227189 &&
  48         git tag eighth-signed-alt
  49 '
  50
  51 test_expect_success GPG 'verify and show signatures' '
  52         (
  53                 for commit in initial second merge fourth-signed fifth-signed sixth-signed seventh-signed
  54                 do
  55                         git verify-commit $commit &&
  56                         git show --pretty=short --show-signature $commit >actual &&
  57                         grep "Good signature from" actual &&
  58                         ! grep "BAD signature from" actual &&
  59                         echo $commit OK || exit 1
  60                 done
  61         ) &&
  62         (
  63                 for commit in merge^2 fourth-unsigned sixth-unsigned seventh-unsigned
  64                 do
  65                         test_must_fail git verify-commit $commit &&
  66                         git show --pretty=short --show-signature $commit >actual &&
  67                         ! grep "Good signature from" actual &&
  68                         ! grep "BAD signature from" actual &&
  69                         echo $commit OK || exit 1
  70                 done
  71         ) &&
  72         (
  73                 for commit in eighth-signed-alt
  74                 do
  75                         git show --pretty=short --show-signature $commit >actual &&
  76                         grep "Good signature from" actual &&
  77                         ! grep "BAD signature from" actual &&
  78                         grep "not certified" actual &&
  79                         echo $commit OK || exit 1
  80                 done
  81         )
  82 '
  83
  84 test_expect_success GPG 'verify-commit exits success on untrusted signature' '
  85         git verify-commit eighth-signed-alt 2>actual &&
  86         grep "Good signature from" actual &&
  87         ! grep "BAD signature from" actual &&
  88         grep "not certified" actual
  89 '
  90
  91 test_expect_success GPG 'verify signatures with --raw' '
  92         (
  93                 for commit in initial second merge fourth-signed fifth-signed sixth-signed seventh-signed
  94                 do
  95                         git verify-commit --raw $commit 2>actual &&
  96                         grep "GOODSIG" actual &&
  97                         ! grep "BADSIG" actual &&
  98                         echo $commit OK || exit 1
  99                 done
 100         ) &&
 101         (
 102                 for commit in merge^2 fourth-unsigned sixth-unsigned seventh-unsigned
 103                 do
 104                         test_must_fail git verify-commit --raw $commit 2>actual &&
 105                         ! grep "GOODSIG" actual &&
 106                         ! grep "BADSIG" actual &&
 107                         echo $commit OK || exit 1
 108                 done
 109         ) &&
 110         (
 111                 for commit in eighth-signed-alt
 112                 do
 113                         git verify-commit --raw $commit 2>actual &&
 114                         grep "GOODSIG" actual &&
 115                         ! grep "BADSIG" actual &&
 116                         grep "TRUST_UNDEFINED" actual &&
 117                         echo $commit OK || exit 1
 118                 done
 119         )
 120 '
 121
 122 test_expect_success GPG 'show signed commit with signature' '
 123         git show -s initial >commit &&
 124         git show -s --show-signature initial >show &&
 125         git verify-commit -v initial >verify.1 2>verify.2 &&
 126         git cat-file commit initial >cat &&
 127         grep -v -e "gpg: " -e "Warning: " show >show.commit &&
 128         grep -e "gpg: " -e "Warning: " show >show.gpg &&
 129         grep -v "^ " cat | grep -v "^gpgsig " >cat.commit &&
 130         test_cmp show.commit commit &&
 131         test_cmp show.gpg verify.2 &&
 132         test_cmp cat.commit verify.1
 133 '
 134
 135 test_expect_success GPG 'detect fudged signature' '
 136         git cat-file commit seventh-signed >raw &&
 137
 138         sed -e "s/seventh/7th forged/" raw >forged1 &&
 139         git hash-object -w -t commit forged1 >forged1.commit &&
 140         ! git verify-commit $(cat forged1.commit) &&
 141         git show --pretty=short --show-signature $(cat forged1.commit) >actual1 &&
 142         grep "BAD signature from" actual1 &&
 143         ! grep "Good signature from" actual1
 144 '
 145
 146 test_expect_success GPG 'detect fudged signature with NUL' '
 147         git cat-file commit seventh-signed >raw &&
 148         cat raw >forged2 &&
 149         echo Qwik | tr "Q" "\000" >>forged2 &&
 150         git hash-object -w -t commit forged2 >forged2.commit &&
 151         ! git verify-commit $(cat forged2.commit) &&
 152         git show --pretty=short --show-signature $(cat forged2.commit) >actual2 &&
 153         grep "BAD signature from" actual2 &&
 154         ! grep "Good signature from" actual2
 155 '
 156
 157 test_expect_success GPG 'amending already signed commit' '
 158         git checkout fourth-signed^0 &&
 159         git commit --amend -S --no-edit &&
 160         git verify-commit HEAD &&
 161         git show -s --show-signature HEAD >actual &&
 162         grep "Good signature from" actual &&
 163         ! grep "BAD signature from" actual
 164 '
 165
 166 test_expect_success GPG 'show good signature with custom format' '
 167         cat >expect <<-\EOF &&
 168         G
 169         13B6F51ECDDE430D
 170         C O Mitter <committer@example.com>
 171         EOF
 172         git log -1 --format="%G?%n%GK%n%GS" sixth-signed >actual &&
 173         test_cmp expect actual
 174 '
 175
 176 test_expect_success GPG 'show bad signature with custom format' '
 177         cat >expect <<-\EOF &&
 178         B
 179         13B6F51ECDDE430D
 180         C O Mitter <committer@example.com>
 181         EOF
 182         git log -1 --format="%G?%n%GK%n%GS" $(cat forged1.commit) >actual &&
 183         test_cmp expect actual
 184 '
 185
 186 test_expect_success GPG 'show unknown signature with custom format' '
 187         cat >expect <<-\EOF &&
 188         U
 189         61092E85B7227189
 190         Eris Discordia <discord@example.net>
 191         EOF
 192         git log -1 --format="%G?%n%GK%n%GS" eighth-signed-alt >actual &&
 193         test_cmp expect actual
 194 '
 195
 196 test_expect_success GPG 'show lack of signature with custom format' '
 197         cat >expect <<-\EOF &&
 198         N
 199
 200
 201         EOF
 202         git log -1 --format="%G?%n%GK%n%GS" seventh-unsigned >actual &&
 203         test_cmp expect actual
 204 '
 205
 206 test_done