July 2020 - tor-commits - lists.torproject.org

[tor/release-0.4.4] Merge branch 'maint-0.4.2' into maint-0.4.3
by ahf＠torproject.org 31 Jul '20

31 Jul '20

commit e78a7450a2990a75380885786a5840f15f482131 Merge: 3b8bf743ae 4e684c8695 Author: Alexander Færøy <ahf(a)torproject.org> Date: Fri Jul 31 02:03:34 2020 +0000 Merge branch 'maint-0.4.2' into maint-0.4.3 changes/bug40076 | 5 ++++ src/lib/buf/buffers.c | 2 ++ src/test/test_buffers.c | 64 +++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 71 insertions(+)

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[tor/release-0.4.4] Merge branch 'maint-0.4.3' into maint-0.4.4
by ahf＠torproject.org 31 Jul '20

31 Jul '20

commit 4c22050de14244418b1b3dbce124544e7fb40e4a Merge: b4400e2093 e78a7450a2 Author: Alexander Færøy <ahf(a)torproject.org> Date: Fri Jul 31 02:03:35 2020 +0000 Merge branch 'maint-0.4.3' into maint-0.4.4

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[tor/release-0.4.4] Merge branch 'maint-0.4.4' into release-0.4.4
by ahf＠torproject.org 31 Jul '20

31 Jul '20

commit 0f5d5943881da7d7350a01ac3361611f45e796f3 Merge: f04034536f 4c22050de1 Author: Alexander Færøy <ahf(a)torproject.org> Date: Fri Jul 31 02:03:35 2020 +0000 Merge branch 'maint-0.4.4' into release-0.4.4

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[tor/maint-0.3.5] Add unit test for buf_move_all(), including a failing case
by ahf＠torproject.org 31 Jul '20

31 Jul '20

commit 0a588821cb5540e901a3d5b07ac73a20905a2c64 Author: Nick Mathewson <nickm(a)torproject.org> Date: Thu Jul 30 14:19:32 2020 -0400 Add unit test for buf_move_all(), including a failing case The failing case is #if'd out for now, but will be fixed in the next commit. Testing for a fix for #40076. --- src/test/test_buffers.c | 66 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) diff --git a/src/test/test_buffers.c b/src/test/test_buffers.c index 2f9ad1fbe3..67a49a5017 100644 --- a/src/test/test_buffers.c +++ b/src/test/test_buffers.c @@ -302,6 +302,71 @@ test_buffer_pullup(void *arg) tor_free(tmp); } +static void +test_buffers_move_all(void *arg) +{ + (void)arg; + buf_t *input = buf_new(); + buf_t *output = buf_new(); + char *s = NULL; + +#if 0 + /* Move from empty buffer to nonempty buffer. (This is a regression test for + * #40076) */ + buf_add(output, "abc", 3); + buf_assert_ok(input); + buf_assert_ok(output); + buf_move_all(output, input); + buf_assert_ok(input); + buf_assert_ok(output); + tt_int_op(buf_datalen(output), OP_EQ, 3); + s = buf_extract(output, NULL); + tt_str_op(s, OP_EQ, "abc"); + buf_free(output); + buf_free(input); + tor_free(s); + + /* Move from empty to empty. */ + output = buf_new(); + input = buf_new(); +#endif + buf_move_all(output, input); + buf_assert_ok(input); + buf_assert_ok(output); + tt_int_op(buf_datalen(output), OP_EQ, 0); + buf_free(output); + buf_free(input); + + /* Move from nonempty to empty. */ + output = buf_new(); + input = buf_new(); + buf_add(input, "longstanding bugs", 17); + buf_move_all(output, input); + buf_assert_ok(input); + buf_assert_ok(output); + s = buf_extract(output, NULL); + tt_str_op(s, OP_EQ, "longstanding bugs"); + buf_free(output); + buf_free(input); + tor_free(s); + + /* Move from nonempty to nonempty. */ + output = buf_new(); + input = buf_new(); + buf_add(output, "the start of", 12); + buf_add(input, " a string", 9); + buf_move_all(output, input); + buf_assert_ok(input); + buf_assert_ok(output); + s = buf_extract(output, NULL); + tt_str_op(s, OP_EQ, "the start of a string"); + + done: + buf_free(output); + buf_free(input); + tor_free(s); +} + static void test_buffer_copy(void *arg) { @@ -799,6 +864,7 @@ struct testcase_t buffer_tests[] = { { "basic", test_buffers_basic, TT_FORK, NULL, NULL }, { "copy", test_buffer_copy, TT_FORK, NULL, NULL }, { "pullup", test_buffer_pullup, TT_FORK, NULL, NULL }, + { "move_all", test_buffers_move_all, 0, NULL, NULL }, { "startswith", test_buffer_peek_startswith, 0, NULL, NULL }, { "allocation_tracking", test_buffer_allocation_tracking, TT_FORK, NULL, NULL },

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[tor/maint-0.3.5] Fix a bug in buf_move_all() when the input buffer is empty.
by ahf＠torproject.org 31 Jul '20

31 Jul '20

commit c4742b89b23d58958ee0d5ca324dac5948c94bf6 Author: Nick Mathewson <nickm(a)torproject.org> Date: Thu Jul 30 14:24:25 2020 -0400 Fix a bug in buf_move_all() when the input buffer is empty. We found this in #40076, after we started using buf_move_all() in more places. Fixes bug #40076; bugfix on 0.3.3.1-alpha. As far as I know, the crash only affects master, but I think this warrants a backport, "just in case". --- changes/bug40076 | 5 +++++ src/lib/container/buffers.c | 2 ++ src/test/test_buffers.c | 2 -- 3 files changed, 7 insertions(+), 2 deletions(-) diff --git a/changes/bug40076 b/changes/bug40076 new file mode 100644 index 0000000000..9ef5969ae8 --- /dev/null +++ b/changes/bug40076 @@ -0,0 +1,5 @@ + o Minor bugfixes (correctness, buffers): + - Fix a correctness bug that could cause an assertion failure if we ever + tried using the buf_move_all() function with an empty input. + As far as we know, no released versions of Tor do this. + Fixes bug 40076; bugfix on 0.3.3.1-alpha. diff --git a/src/lib/container/buffers.c b/src/lib/container/buffers.c index 67887f2f30..fe4cf7c385 100644 --- a/src/lib/container/buffers.c +++ b/src/lib/container/buffers.c @@ -689,6 +689,8 @@ buf_move_all(buf_t *buf_out, buf_t *buf_in) tor_assert(buf_out); if (!buf_in) return; + if (buf_datalen(buf_in) == 0) + return; if (BUG(buf_out->datalen >= INT_MAX || buf_in->datalen >= INT_MAX)) return; if (BUG(buf_out->datalen >= INT_MAX - buf_in->datalen)) diff --git a/src/test/test_buffers.c b/src/test/test_buffers.c index 67a49a5017..3e7364a5c8 100644 --- a/src/test/test_buffers.c +++ b/src/test/test_buffers.c @@ -310,7 +310,6 @@ test_buffers_move_all(void *arg) buf_t *output = buf_new(); char *s = NULL; -#if 0 /* Move from empty buffer to nonempty buffer. (This is a regression test for * #40076) */ buf_add(output, "abc", 3); @@ -329,7 +328,6 @@ test_buffers_move_all(void *arg) /* Move from empty to empty. */ output = buf_new(); input = buf_new(); -#endif buf_move_all(output, input); buf_assert_ok(input); buf_assert_ok(output);

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[tor/maint-0.4.4] Fix a bug in buf_move_all() when the input buffer is empty.
by ahf＠torproject.org 31 Jul '20

31 Jul '20

commit c4742b89b23d58958ee0d5ca324dac5948c94bf6 Author: Nick Mathewson <nickm(a)torproject.org> Date: Thu Jul 30 14:24:25 2020 -0400 Fix a bug in buf_move_all() when the input buffer is empty. We found this in #40076, after we started using buf_move_all() in more places. Fixes bug #40076; bugfix on 0.3.3.1-alpha. As far as I know, the crash only affects master, but I think this warrants a backport, "just in case". --- changes/bug40076 | 5 +++++ src/lib/container/buffers.c | 2 ++ src/test/test_buffers.c | 2 -- 3 files changed, 7 insertions(+), 2 deletions(-) diff --git a/changes/bug40076 b/changes/bug40076 new file mode 100644 index 0000000000..9ef5969ae8 --- /dev/null +++ b/changes/bug40076 @@ -0,0 +1,5 @@ + o Minor bugfixes (correctness, buffers): + - Fix a correctness bug that could cause an assertion failure if we ever + tried using the buf_move_all() function with an empty input. + As far as we know, no released versions of Tor do this. + Fixes bug 40076; bugfix on 0.3.3.1-alpha. diff --git a/src/lib/container/buffers.c b/src/lib/container/buffers.c index 67887f2f30..fe4cf7c385 100644 --- a/src/lib/container/buffers.c +++ b/src/lib/container/buffers.c @@ -689,6 +689,8 @@ buf_move_all(buf_t *buf_out, buf_t *buf_in) tor_assert(buf_out); if (!buf_in) return; + if (buf_datalen(buf_in) == 0) + return; if (BUG(buf_out->datalen >= INT_MAX || buf_in->datalen >= INT_MAX)) return; if (BUG(buf_out->datalen >= INT_MAX - buf_in->datalen)) diff --git a/src/test/test_buffers.c b/src/test/test_buffers.c index 67a49a5017..3e7364a5c8 100644 --- a/src/test/test_buffers.c +++ b/src/test/test_buffers.c @@ -310,7 +310,6 @@ test_buffers_move_all(void *arg) buf_t *output = buf_new(); char *s = NULL; -#if 0 /* Move from empty buffer to nonempty buffer. (This is a regression test for * #40076) */ buf_add(output, "abc", 3); @@ -329,7 +328,6 @@ test_buffers_move_all(void *arg) /* Move from empty to empty. */ output = buf_new(); input = buf_new(); -#endif buf_move_all(output, input); buf_assert_ok(input); buf_assert_ok(output);

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[tor/maint-0.4.4] Merge branch 'bug40076_042' into bug40076_043
by ahf＠torproject.org 31 Jul '20

31 Jul '20

commit 69d775293714f3fdb582f7877191ade48f8f8124 Merge: 3b8bf743ae c2d5ec5e43 Author: Nick Mathewson <nickm(a)torproject.org> Date: Thu Jul 30 14:27:29 2020 -0400 Merge branch 'bug40076_042' into bug40076_043 changes/bug40076 | 5 ++++ src/lib/buf/buffers.c | 2 ++ src/test/test_buffers.c | 64 +++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 71 insertions(+)

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[tor/maint-0.4.4] Merge branch 'bug40076_043' into bug40076_044
by ahf＠torproject.org 31 Jul '20

31 Jul '20

commit b4400e2093f68e349464eacd7dbe44cebf8d5c71 Merge: 0c8c295963 69d7752937 Author: Nick Mathewson <nickm(a)torproject.org> Date: Thu Jul 30 14:28:11 2020 -0400 Merge branch 'bug40076_043' into bug40076_044 changes/bug40076 | 5 ++++ src/lib/buf/buffers.c | 2 ++ src/test/test_buffers.c | 64 +++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 71 insertions(+) diff --cc src/lib/buf/buffers.c index 95b384bf06,d7b73e3807..a5031a47a6 --- a/src/lib/buf/buffers.c +++ b/src/lib/buf/buffers.c @@@ -692,9 -692,11 +692,11 @@@ buf_move_all(buf_t *buf_out, buf_t *buf tor_assert(buf_out); if (!buf_in) return; + if (buf_datalen(buf_in) == 0) + return; - if (BUG(buf_out->datalen >= INT_MAX || buf_in->datalen >= INT_MAX)) + if (BUG(buf_out->datalen > BUF_MAX_LEN || buf_in->datalen > BUF_MAX_LEN)) return; - if (BUG(buf_out->datalen >= INT_MAX - buf_in->datalen)) + if (BUG(buf_out->datalen > BUF_MAX_LEN - buf_in->datalen)) return; if (buf_out->head == NULL) {

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[tor/maint-0.4.4] Add unit test for buf_move_all(), including a failing case
by ahf＠torproject.org 31 Jul '20

31 Jul '20

commit 0a588821cb5540e901a3d5b07ac73a20905a2c64 Author: Nick Mathewson <nickm(a)torproject.org> Date: Thu Jul 30 14:19:32 2020 -0400 Add unit test for buf_move_all(), including a failing case The failing case is #if'd out for now, but will be fixed in the next commit. Testing for a fix for #40076. --- src/test/test_buffers.c | 66 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) diff --git a/src/test/test_buffers.c b/src/test/test_buffers.c index 2f9ad1fbe3..67a49a5017 100644 --- a/src/test/test_buffers.c +++ b/src/test/test_buffers.c @@ -302,6 +302,71 @@ test_buffer_pullup(void *arg) tor_free(tmp); } +static void +test_buffers_move_all(void *arg) +{ + (void)arg; + buf_t *input = buf_new(); + buf_t *output = buf_new(); + char *s = NULL; + +#if 0 + /* Move from empty buffer to nonempty buffer. (This is a regression test for + * #40076) */ + buf_add(output, "abc", 3); + buf_assert_ok(input); + buf_assert_ok(output); + buf_move_all(output, input); + buf_assert_ok(input); + buf_assert_ok(output); + tt_int_op(buf_datalen(output), OP_EQ, 3); + s = buf_extract(output, NULL); + tt_str_op(s, OP_EQ, "abc"); + buf_free(output); + buf_free(input); + tor_free(s); + + /* Move from empty to empty. */ + output = buf_new(); + input = buf_new(); +#endif + buf_move_all(output, input); + buf_assert_ok(input); + buf_assert_ok(output); + tt_int_op(buf_datalen(output), OP_EQ, 0); + buf_free(output); + buf_free(input); + + /* Move from nonempty to empty. */ + output = buf_new(); + input = buf_new(); + buf_add(input, "longstanding bugs", 17); + buf_move_all(output, input); + buf_assert_ok(input); + buf_assert_ok(output); + s = buf_extract(output, NULL); + tt_str_op(s, OP_EQ, "longstanding bugs"); + buf_free(output); + buf_free(input); + tor_free(s); + + /* Move from nonempty to nonempty. */ + output = buf_new(); + input = buf_new(); + buf_add(output, "the start of", 12); + buf_add(input, " a string", 9); + buf_move_all(output, input); + buf_assert_ok(input); + buf_assert_ok(output); + s = buf_extract(output, NULL); + tt_str_op(s, OP_EQ, "the start of a string"); + + done: + buf_free(output); + buf_free(input); + tor_free(s); +} + static void test_buffer_copy(void *arg) { @@ -799,6 +864,7 @@ struct testcase_t buffer_tests[] = { { "basic", test_buffers_basic, TT_FORK, NULL, NULL }, { "copy", test_buffer_copy, TT_FORK, NULL, NULL }, { "pullup", test_buffer_pullup, TT_FORK, NULL, NULL }, + { "move_all", test_buffers_move_all, 0, NULL, NULL }, { "startswith", test_buffer_peek_startswith, 0, NULL, NULL }, { "allocation_tracking", test_buffer_allocation_tracking, TT_FORK, NULL, NULL },

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[tor/maint-0.4.4] Merge branch 'maint-0.4.2' into bug40076_042
by ahf＠torproject.org 31 Jul '20

31 Jul '20

commit c2d5ec5e43c2690656ea5a5a384683108782d149 Merge: c4742b89b2 cdb0e6c252 Author: Nick Mathewson <nickm(a)torproject.org> Date: Thu Jul 30 14:27:29 2020 -0400 Merge branch 'maint-0.4.2' into bug40076_042 .gitignore | 16 +- .travis.yml | 18 +- ChangeLog | 2731 ++++++- LICENSE | 3 +- Makefile.am | 106 +- ReleaseNotes | 2437 +++++- autogen.sh | 5 +- changes/29241_diagnostic | 4 - changes/bug12399 | 3 - changes/bug13221 | 5 - changes/bug22619 | 3 - changes/bug23507 | 5 - changes/bug23818_v2 | 6 - changes/bug23818_v3 | 6 - changes/bug24661 | 3 - changes/bug27197 | 3 - changes/bug27199 | 3 - changes/bug27740 | 4 - changes/bug27741 | 5 - changes/bug27750 | 6 - changes/bug27800 | 4 - changes/bug27804 | 3 - changes/bug27841 | 7 - changes/bug27948 | 6 - changes/bug27963_timeradd | 4 - changes/bug27968 | 3 - changes/bug28096 | 13 - changes/bug28115 | 3 - changes/bug28127 | 7 - changes/bug28183 | 4 - changes/bug28202 | 4 - changes/bug28245 | 6 - changes/bug28298 | 4 - changes/bug28303 | 3 - 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