t/t7510-signed-commit.sh

   1 #!/bin/sh
   2
   3 test_description='signed commit tests'
   4 . ./test-lib.sh
   5 GNUPGHOME_NOT_USED=$GNUPGHOME
   6 . "$TEST_DIRECTORY/lib-gpg.sh"
   7
   8 test_expect_success GPG 'create signed commits' '
   9         test_when_finished "test_unconfig commit.gpgsign" &&
  10
  11         echo 1 >file && git add file &&
  12         test_tick && git commit -S -m initial &&
  13         git tag initial &&
  14         git branch side &&
  15
  16         echo 2 >file && test_tick && git commit -a -S -m second &&
  17         git tag second &&
  18
  19         git checkout side &&
  20         echo 3 >elif && git add elif &&
  21         test_tick && git commit -m "third on side" &&
  22
  23         git checkout master &&
  24         test_tick && git merge -S side &&
  25         git tag merge &&
  26
  27         echo 4 >file && test_tick && git commit -a -m "fourth unsigned" &&
  28         git tag fourth-unsigned &&
  29
  30         test_tick && git commit --amend -S -m "fourth signed" &&
  31         git tag fourth-signed &&
  32
  33         git config commit.gpgsign true &&
  34         echo 5 >file && test_tick && git commit -a -m "fifth signed" &&
  35         git tag fifth-signed &&
  36
  37         git config commit.gpgsign false &&
  38         echo 6 >file && test_tick && git commit -a -m "sixth" &&
  39         git tag sixth-unsigned &&
  40
  41         git config commit.gpgsign true &&
  42         echo 7 >file && test_tick && git commit -a -m "seventh" --no-gpg-sign &&
  43         git tag seventh-unsigned &&
  44
  45         test_tick && git rebase -f HEAD^^ && git tag sixth-signed HEAD^ &&
  46         git tag seventh-signed &&
  47
  48         echo 8 >file && test_tick && git commit -a -m eighth -SB7227189 &&
  49         git tag eighth-signed-alt &&
  50
  51         # commit.gpgsign is still on but this must not be signed
  52         git tag ninth-unsigned $(echo 9 | git commit-tree HEAD^{tree}) &&
  53         # explicit -S of course must sign.
  54         git tag tenth-signed $(echo 9 | git commit-tree -S HEAD^{tree})
  55 '
  56
  57 test_expect_success GPG 'verify and show signatures' '
  58         (
  59                 for commit in initial second merge fourth-signed \
  60                         fifth-signed sixth-signed seventh-signed tenth-signed
  61                 do
  62                         git verify-commit $commit &&
  63                         git show --pretty=short --show-signature $commit >actual &&
  64                         grep "Good signature from" actual &&
  65                         ! grep "BAD signature from" actual &&
  66                         echo $commit OK || exit 1
  67                 done
  68         ) &&
  69         (
  70                 for commit in merge^2 fourth-unsigned sixth-unsigned \
  71                         seventh-unsigned ninth-unsigned
  72                 do
  73                         test_must_fail git verify-commit $commit &&
  74                         git show --pretty=short --show-signature $commit >actual &&
  75                         ! grep "Good signature from" actual &&
  76                         ! grep "BAD signature from" actual &&
  77                         echo $commit OK || exit 1
  78                 done
  79         ) &&
  80         (
  81                 for commit in eighth-signed-alt
  82                 do
  83                         git show --pretty=short --show-signature $commit >actual &&
  84                         grep "Good signature from" actual &&
  85                         ! grep "BAD signature from" actual &&
  86                         grep "not certified" actual &&
  87                         echo $commit OK || exit 1
  88                 done
  89         )
  90 '
  91
  92 test_expect_success GPG 'verify-commit exits success on untrusted signature' '
  93         git verify-commit eighth-signed-alt 2>actual &&
  94         grep "Good signature from" actual &&
  95         ! grep "BAD signature from" actual &&
  96         grep "not certified" actual
  97 '
  98
  99 test_expect_success GPG 'verify signatures with --raw' '
 100         (
 101                 for commit in initial second merge fourth-signed fifth-signed sixth-signed seventh-signed
 102                 do
 103                         git verify-commit --raw $commit 2>actual &&
 104                         grep "GOODSIG" actual &&
 105                         ! grep "BADSIG" actual &&
 106                         echo $commit OK || exit 1
 107                 done
 108         ) &&
 109         (
 110                 for commit in merge^2 fourth-unsigned sixth-unsigned seventh-unsigned
 111                 do
 112                         test_must_fail git verify-commit --raw $commit 2>actual &&
 113                         ! grep "GOODSIG" actual &&
 114                         ! grep "BADSIG" actual &&
 115                         echo $commit OK || exit 1
 116                 done
 117         ) &&
 118         (
 119                 for commit in eighth-signed-alt
 120                 do
 121                         git verify-commit --raw $commit 2>actual &&
 122                         grep "GOODSIG" actual &&
 123                         ! grep "BADSIG" actual &&
 124                         grep "TRUST_UNDEFINED" actual &&
 125                         echo $commit OK || exit 1
 126                 done
 127         )
 128 '
 129
 130 test_expect_success GPG 'show signed commit with signature' '
 131         git show -s initial >commit &&
 132         git show -s --show-signature initial >show &&
 133         git verify-commit -v initial >verify.1 2>verify.2 &&
 134         git cat-file commit initial >cat &&
 135         grep -v -e "gpg: " -e "Warning: " show >show.commit &&
 136         grep -e "gpg: " -e "Warning: " show >show.gpg &&
 137         grep -v "^ " cat | grep -v "^gpgsig " >cat.commit &&
 138         test_cmp show.commit commit &&
 139         test_cmp show.gpg verify.2 &&
 140         test_cmp cat.commit verify.1
 141 '
 142
 143 test_expect_success GPG 'detect fudged signature' '
 144         git cat-file commit seventh-signed >raw &&
 145
 146         sed -e "s/seventh/7th forged/" raw >forged1 &&
 147         git hash-object -w -t commit forged1 >forged1.commit &&
 148         ! git verify-commit $(cat forged1.commit) &&
 149         git show --pretty=short --show-signature $(cat forged1.commit) >actual1 &&
 150         grep "BAD signature from" actual1 &&
 151         ! grep "Good signature from" actual1
 152 '
 153
 154 test_expect_success GPG 'detect fudged signature with NUL' '
 155         git cat-file commit seventh-signed >raw &&
 156         cat raw >forged2 &&
 157         echo Qwik | tr "Q" "\000" >>forged2 &&
 158         git hash-object -w -t commit forged2 >forged2.commit &&
 159         ! git verify-commit $(cat forged2.commit) &&
 160         git show --pretty=short --show-signature $(cat forged2.commit) >actual2 &&
 161         grep "BAD signature from" actual2 &&
 162         ! grep "Good signature from" actual2
 163 '
 164
 165 test_expect_success GPG 'amending already signed commit' '
 166         git checkout fourth-signed^0 &&
 167         git commit --amend -S --no-edit &&
 168         git verify-commit HEAD &&
 169         git show -s --show-signature HEAD >actual &&
 170         grep "Good signature from" actual &&
 171         ! grep "BAD signature from" actual
 172 '
 173
 174 test_expect_success GPG 'show good signature with custom format' '
 175         cat >expect <<-\EOF &&
 176         G
 177         13B6F51ECDDE430D
 178         C O Mitter <committer@example.com>
 179         EOF
 180         git log -1 --format="%G?%n%GK%n%GS" sixth-signed >actual &&
 181         test_cmp expect actual
 182 '
 183
 184 test_expect_success GPG 'show bad signature with custom format' '
 185         cat >expect <<-\EOF &&
 186         B
 187         13B6F51ECDDE430D
 188         C O Mitter <committer@example.com>
 189         EOF
 190         git log -1 --format="%G?%n%GK%n%GS" $(cat forged1.commit) >actual &&
 191         test_cmp expect actual
 192 '
 193
 194 test_expect_success GPG 'show untrusted signature with custom format' '
 195         cat >expect <<-\EOF &&
 196         U
 197         61092E85B7227189
 198         Eris Discordia <discord@example.net>
 199         EOF
 200         git log -1 --format="%G?%n%GK%n%GS" eighth-signed-alt >actual &&
 201         test_cmp expect actual
 202 '
 203
 204 test_expect_success GPG 'show unknown signature with custom format' '
 205         cat >expect <<-\EOF &&
 206         E
 207         61092E85B7227189
 208
 209         EOF
 210         GNUPGHOME="$GNUPGHOME_NOT_USED" git log -1 --format="%G?%n%GK%n%GS" eighth-signed-alt >actual &&
 211         test_cmp expect actual
 212 '
 213
 214 test_expect_success GPG 'show lack of signature with custom format' '
 215         cat >expect <<-\EOF &&
 216         N
 217
 218
 219         EOF
 220         git log -1 --format="%G?%n%GK%n%GS" seventh-unsigned >actual &&
 221         test_cmp expect actual
 222 '
 223
 224 test_expect_success GPG 'log.showsignature behaves like --show-signature' '
 225         test_config log.showsignature true &&
 226         git show initial >actual &&
 227         grep "gpg: Signature made" actual &&
 228         grep "gpg: Good signature" actual
 229 '
 230
 231 test_done