Andrew's git - gitweb.git/blob - t/t7510-signed-commit.sh

   1#!/bin/sh
   2
   3test_description='signed commit tests'
   4. ./test-lib.sh
   5GNUPGHOME_NOT_USED=$GNUPGHOME
   6. "$TEST_DIRECTORY/lib-gpg.sh"
   7
   8test_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        echo 9 | git commit-tree HEAD^{tree} >oid &&
  53        test_line_count = 1 oid &&
  54        git tag ninth-unsigned $(cat oid) &&
  55        # explicit -S of course must sign.
  56        echo 10 | git commit-tree -S HEAD^{tree} >oid &&
  57        test_line_count = 1 oid &&
  58        git tag tenth-signed $(cat oid) &&
  59
  60        # --gpg-sign[=<key-id>] must sign.
  61        echo 11 | git commit-tree --gpg-sign HEAD^{tree} >oid &&
  62        test_line_count = 1 oid &&
  63        git tag eleventh-signed $(cat oid) &&
  64        echo 12 | git commit-tree --gpg-sign=B7227189 HEAD^{tree} >oid &&
  65        test_line_count = 1 oid &&
  66        git tag twelfth-signed-alt $(cat oid)
  67'
  68
  69test_expect_success GPG 'verify and show signatures' '
  70        (
  71                for commit in initial second merge fourth-signed \
  72                        fifth-signed sixth-signed seventh-signed tenth-signed \
  73                        eleventh-signed
  74                do
  75                        git verify-commit $commit &&
  76                        git show --pretty=short --show-signature $commit >actual &&
  77                        grep "Good signature from" actual &&
  78                        ! grep "BAD signature from" actual &&
  79                        echo $commit OK || exit 1
  80                done
  81        ) &&
  82        (
  83                for commit in merge^2 fourth-unsigned sixth-unsigned \
  84                        seventh-unsigned ninth-unsigned
  85                do
  86                        test_must_fail git verify-commit $commit &&
  87                        git show --pretty=short --show-signature $commit >actual &&
  88                        ! grep "Good signature from" actual &&
  89                        ! grep "BAD signature from" actual &&
  90                        echo $commit OK || exit 1
  91                done
  92        ) &&
  93        (
  94                for commit in eighth-signed-alt twelfth-signed-alt
  95                do
  96                        git show --pretty=short --show-signature $commit >actual &&
  97                        grep "Good signature from" actual &&
  98                        ! grep "BAD signature from" actual &&
  99                        grep "not certified" actual &&
 100                        echo $commit OK || exit 1
 101                done
 102        )
 103'
 104
 105test_expect_success GPG 'verify-commit exits success on untrusted signature' '
 106        git verify-commit eighth-signed-alt 2>actual &&
 107        grep "Good signature from" actual &&
 108        ! grep "BAD signature from" actual &&
 109        grep "not certified" actual
 110'
 111
 112test_expect_success GPG 'verify signatures with --raw' '
 113        (
 114                for commit in initial second merge fourth-signed fifth-signed sixth-signed seventh-signed
 115                do
 116                        git verify-commit --raw $commit 2>actual &&
 117                        grep "GOODSIG" actual &&
 118                        ! grep "BADSIG" actual &&
 119                        echo $commit OK || exit 1
 120                done
 121        ) &&
 122        (
 123                for commit in merge^2 fourth-unsigned sixth-unsigned seventh-unsigned
 124                do
 125                        test_must_fail git verify-commit --raw $commit 2>actual &&
 126                        ! grep "GOODSIG" actual &&
 127                        ! grep "BADSIG" actual &&
 128                        echo $commit OK || exit 1
 129                done
 130        ) &&
 131        (
 132                for commit in eighth-signed-alt
 133                do
 134                        git verify-commit --raw $commit 2>actual &&
 135                        grep "GOODSIG" actual &&
 136                        ! grep "BADSIG" actual &&
 137                        grep "TRUST_UNDEFINED" actual &&
 138                        echo $commit OK || exit 1
 139                done
 140        )
 141'
 142
 143test_expect_success GPG 'show signed commit with signature' '
 144        git show -s initial >commit &&
 145        git show -s --show-signature initial >show &&
 146        git verify-commit -v initial >verify.1 2>verify.2 &&
 147        git cat-file commit initial >cat &&
 148        grep -v -e "gpg: " -e "Warning: " show >show.commit &&
 149        grep -e "gpg: " -e "Warning: " show >show.gpg &&
 150        grep -v "^ " cat | grep -v "^gpgsig " >cat.commit &&
 151        test_cmp show.commit commit &&
 152        test_cmp show.gpg verify.2 &&
 153        test_cmp cat.commit verify.1
 154'
 155
 156test_expect_success GPG 'detect fudged signature' '
 157        git cat-file commit seventh-signed >raw &&
 158        sed -e "s/^seventh/7th forged/" raw >forged1 &&
 159        git hash-object -w -t commit forged1 >forged1.commit &&
 160        test_must_fail git verify-commit $(cat forged1.commit) &&
 161        git show --pretty=short --show-signature $(cat forged1.commit) >actual1 &&
 162        grep "BAD signature from" actual1 &&
 163        ! grep "Good signature from" actual1
 164'
 165
 166test_expect_success GPG 'detect fudged signature with NUL' '
 167        git cat-file commit seventh-signed >raw &&
 168        cat raw >forged2 &&
 169        echo Qwik | tr "Q" "\000" >>forged2 &&
 170        git hash-object -w -t commit forged2 >forged2.commit &&
 171        test_must_fail git verify-commit $(cat forged2.commit) &&
 172        git show --pretty=short --show-signature $(cat forged2.commit) >actual2 &&
 173        grep "BAD signature from" actual2 &&
 174        ! grep "Good signature from" actual2
 175'
 176
 177test_expect_success GPG 'amending already signed commit' '
 178        git checkout fourth-signed^0 &&
 179        git commit --amend -S --no-edit &&
 180        git verify-commit HEAD &&
 181        git show -s --show-signature HEAD >actual &&
 182        grep "Good signature from" actual &&
 183        ! grep "BAD signature from" actual
 184'
 185
 186test_expect_success GPG 'show good signature with custom format' '
 187        cat >expect <<-\EOF &&
 188        G
 189        13B6F51ECDDE430D
 190        C O Mitter <committer@example.com>
 191        73D758744BE721698EC54E8713B6F51ECDDE430D
 192        73D758744BE721698EC54E8713B6F51ECDDE430D
 193        EOF
 194        git log -1 --format="%G?%n%GK%n%GS%n%GF%n%GP" sixth-signed >actual &&
 195        test_cmp expect actual
 196'
 197
 198test_expect_success GPG 'show bad signature with custom format' '
 199        cat >expect <<-\EOF &&
 200        B
 201        13B6F51ECDDE430D
 202        C O Mitter <committer@example.com>
 203
 204
 205        EOF
 206        git log -1 --format="%G?%n%GK%n%GS%n%GF%n%GP" $(cat forged1.commit) >actual &&
 207        test_cmp expect actual
 208'
 209
 210test_expect_success GPG 'show untrusted signature with custom format' '
 211        cat >expect <<-\EOF &&
 212        U
 213        65A0EEA02E30CAD7
 214        Eris Discordia <discord@example.net>
 215        F8364A59E07FFE9F4D63005A65A0EEA02E30CAD7
 216        D4BE22311AD3131E5EDA29A461092E85B7227189
 217        EOF
 218        git log -1 --format="%G?%n%GK%n%GS%n%GF%n%GP" eighth-signed-alt >actual &&
 219        test_cmp expect actual
 220'
 221
 222test_expect_success GPG 'show unknown signature with custom format' '
 223        cat >expect <<-\EOF &&
 224        E
 225        65A0EEA02E30CAD7
 226
 227
 228
 229        EOF
 230        GNUPGHOME="$GNUPGHOME_NOT_USED" git log -1 --format="%G?%n%GK%n%GS%n%GF%n%GP" eighth-signed-alt >actual &&
 231        test_cmp expect actual
 232'
 233
 234test_expect_success GPG 'show lack of signature with custom format' '
 235        cat >expect <<-\EOF &&
 236        N
 237
 238
 239
 240
 241        EOF
 242        git log -1 --format="%G?%n%GK%n%GS%n%GF%n%GP" seventh-unsigned >actual &&
 243        test_cmp expect actual
 244'
 245
 246test_expect_success GPG 'log.showsignature behaves like --show-signature' '
 247        test_config log.showsignature true &&
 248        git show initial >actual &&
 249        grep "gpg: Signature made" actual &&
 250        grep "gpg: Good signature" actual
 251'
 252
 253test_expect_success GPG 'check config gpg.format values' '
 254        test_config gpg.format openpgp &&
 255        git commit -S --amend -m "success" &&
 256        test_config gpg.format OpEnPgP &&
 257        test_must_fail git commit -S --amend -m "fail"
 258'
 259
 260test_expect_success GPG 'detect fudged commit with double signature' '
 261        sed -e "/gpgsig/,/END PGP/d" forged1 >double-base &&
 262        sed -n -e "/gpgsig/,/END PGP/p" forged1 | \
 263                sed -e "s/^gpgsig//;s/^ //" | gpg --dearmor >double-sig1.sig &&
 264        gpg -o double-sig2.sig -u 29472784 --detach-sign double-base &&
 265        cat double-sig1.sig double-sig2.sig | gpg --enarmor >double-combined.asc &&
 266        sed -e "s/^\(-.*\)ARMORED FILE/\1SIGNATURE/;1s/^/gpgsig /;2,\$s/^/ /" \
 267                double-combined.asc > double-gpgsig &&
 268        sed -e "/committer/r double-gpgsig" double-base >double-commit &&
 269        git hash-object -w -t commit double-commit >double-commit.commit &&
 270        test_must_fail git verify-commit $(cat double-commit.commit) &&
 271        git show --pretty=short --show-signature $(cat double-commit.commit) >double-actual &&
 272        grep "BAD signature from" double-actual &&
 273        grep "Good signature from" double-actual
 274'
 275
 276test_expect_success GPG 'show double signature with custom format' '
 277        cat >expect <<-\EOF &&
 278        E
 279
 280
 281
 282
 283        EOF
 284        git log -1 --format="%G?%n%GK%n%GS%n%GF%n%GP" $(cat double-commit.commit) >actual &&
 285        test_cmp expect actual
 286'
 287
 288test_done