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authorMichael Vetter <jubalh@iodoru.org>2019-10-31 12:56:48 +0100
committerMichael Vetter <jubalh@iodoru.org>2019-10-31 12:56:48 +0100
commit4ecd4dea6a0a4c216a57d039dc7dc01d5e41d68a (patch)
tree95a0cc0bfa2712f6931c2cc76805d05aa0708071 /src/xmpp/chat_session.c
parent725cf3e47a6841c2b6e9c27f125f69953cf39f81 (diff)
downloadprofani-tty-4ecd4dea6a0a4c216a57d039dc7dc01d5e41d68a.tar.gz
Replace sent_messages list with algo
For OMEMO we had a list with our sent messages.
It was used so that we don't decrypt our own messages in MUCs that come
in via reflection.

Recently for https://github.com/profanity-im/profanity/pull/1209 we
started to use origin-id and use an algorithm so we can detect our own
sent messages via checking origin-id.

Profanity uses the same id for the message ID and origin-id.

With 06f300a42c4c627b6f1817bd48d92f083ffd9883 we added the
message_is_sent_by_us() function.

We implemented XEP-0359 this way to fix
https://github.com/profanity-im/profanity/issues/1201 so that we don't
log our own messages in MUCs twice.

We can now check whether the message was sent by us using this function
and can get rid of the list.

Probably we could also put many parts of the sv_ev_room_message()
function inside (else) part of `if (!(g_strcmp0(mynick,
message->jid->resourcepart) == 0 && message_is_sent_by_us(message))) {`.

Have to look more closely whether any of this needs to be run in case
the message actually comes from us.
Diffstat (limited to 'src/xmpp/chat_session.c')
0 files changed, 0 insertions, 0 deletions
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# Structured control flow using break/loop rather than jump.
#
# To run (on Linux):
#   $ ./translate_subx init.linux 0*.subx apps/subx-params.subx apps/braces.subx
#   $ mv a.elf apps/braces
#
# Example 1:
#   $ cat x.subx
#   {
#     7c/jump-if-< break/disp8
#     74/jump-if-= loop/disp8
#   }
#   $ cat x.subx |apps/braces
#   _loop1:
#     7c/jump-if-< _break1/disp8
#     74/jump-if-= _loop1/disp8
#   _break1:
#
# Example 2:
#   $ cat x.subx
#   {
#     7c/jump-if-< break/disp8
#   }
#   {
#     74/jump-if-= loop/disp8
#   }
#   $ cat x.subx |apps/braces
#   _loop1:
#     7c/jump-if-< _break1/disp8
#   _break1:
#   _loop2:
#     74/jump-if-= _loop2/disp8
#   _break2:
#
# Example 3:
#   $ cat x.subx
#   {
#     {
#       74/jump-if-= loop/disp8
#     }
#     7c/jump-if-< loop/disp8
#   }
#   $ cat x.subx |apps/braces
#   _loop1:
#     _loop2:
#       74/jump-if-= _loop2/disp8
#     _break2:
#     7c/jump-if-< _loop1/disp8
#   _break1:

== code

Entry:  # run tests if necessary, a REPL if not
    # . prologue
    89/<- %ebp 4/r32/esp
    # initialize heap
    (new-segment *Heap-size Heap)
    # if (argc <= 1) goto interactive
    81 7/subop/compare *ebp 1/imm32
    7e/jump-if-<= $subx-braces-main:interactive/disp8
    # if (argv[1] != "test")) goto interactive
    (kernel-string-equal? *(ebp+8) "test")  # => eax
    3d/compare-eax-and 0/imm32/false
    74/jump-if-= $subx-braces-main:interactive/disp8
    #
    (run-tests)
    # syscall(exit, *Num-test-failures)
    8b/-> *Num-test-failures 3/r32/ebx
    eb/jump $subx-braces-main:end/disp8
$subx-braces-main:interactive:
    (subx-braces Stdin Stdout)
    # syscall(exit, 0)
    bb/copy-to-ebx 0/imm32
$subx-braces-main:end:
    b8/copy-to-eax 1/imm32/exit
    cd/syscall 0x80/imm8

subx-braces:  # in: (addr buffered-file), out: (addr buffered-file)
    # pseudocode:
    #   var line: (stream byte 512)
    #   var label-stack: (stack int 32)  # at most 32 levels of nesting
    #   var next-label-id: int = 1
    #   while true
    #     clear-stream(line)
    #     read-line-buffered(in, line)
    #     if (line->write == 0) break                           # end of file
    #     skip-chars-matching-whitespace(line)
    #     if line->data[line->read] == '{'
    #       print(out, "_loop" next-label-id ":\n")
    #       push(label-stack, next-label-id)
    #       ++next-label-id
    #       continue
    #     if line->data[line->read] == '}'
    #       var top = pop(label-stack)
    #       print(out, "_break" top ":\n")
    #       continue
    #     while true
    #       var word-slice: (addr slice) = next-word-or-string(line)
    #       if slice-empty?(word-slice)                         # end of line
    #         break
    #       if slice-starts-with?(word-slice, "#")              # comment
    #         continue
    #       if slice-starts-with?(word-slice, "break/")
    #         var top = top(label-stack)
    #         print(out, "_break" top)
    #         word-slice->start += len("break")
    #       else if slice-starts-with?(word-slice, "loop/")
    #         var top = top(label-stack)
    #         print(out, "_loop" top)
    #         word-slice->start += len("loop")
    #       print(out, word-slice " ")
    #     print(out, "\n")
    #   flush(out)
    # . prologue
    55/push-ebp
    89/<- %ebp 4/r32/esp
    # . save registers
    50/push-eax
    51/push-ecx
    52/push-edx
    53/push-ebx
    56/push-esi
    57/push-edi
    # esi = in
    8b/-> *(ebp+8) 6/r32/esi
    # var line/ecx: (stream byte 512)
    81 5/subop/subtract %esp 0x200/imm32
    68/push 0x200/imm32/length
    68/push 0/imm32/read
    68/push 0/imm32/write
    89/<- %ecx 4/r32/esp
    # var label-stack/edx: (stack int 32)
    81 5/subop/subtract %esp 0x80/imm32
    68/push 0x80/imm32/length
    68/push 0/imm32/top
    89/<- %edx 4/r32/esp
    # var next-label-id/ebx: int = 1
    c7 0/subop/copy %ebx 1/imm32
    # var word-slice/edi: slice
    68/push 0/imm32/end
    68/push 0/imm32/start
    89/<- %edi 4/r32/esp
$subx-braces:line-loop:
    (clear-stream %ecx)
    (read-line-buffered %esi %ecx)
$subx-braces:check0:
    # if (line->write == 0) break
    81 7/subop/compare *ecx 0/imm32
    0f 84/jump-if-=  $subx-braces:break/disp32
    (skip-chars-matching-whitespace %ecx)
$subx-braces:check-for-curly-open:
    # if (line->data[line->read] != '{') goto next check
    # . eax = line->data[line->read]
    8b/-> *(ecx+4) 0/r32/eax
    8a/copy-byte *(ecx+eax+0xc) 0/r32/AL
    81 4/subop/and %eax 0xff/imm32
    # . if (eax != '{') continue
    3d/compare-eax-and 0x7b/imm32/open-curly
    0f 85/jump-if-!= $subx-braces:check-for-curly-closed/disp32
$subx-braces:emit-curly-open:
    # print(out, "_loop" next-label-id ":")
    (write-buffered *(ebp+0xc) "_loop")
    (print-int32-buffered *(ebp+0xc) %ebx)
    (write-buffered *(ebp+0xc) ":")
    # push(label-stack, next-label-id)
    (push %edx %ebx)
    # ++next-label-id
    ff 0/subop/increment %ebx
    # continue
    e9/jump  $subx-braces:next-line/disp32
$subx-braces:check-for-curly-closed:
    # if (line->data[line->read] != '}') goto next check
    3d/compare-eax-and 0x7d/imm32/close-curly
    0f 85/jump-if-= $subx-braces:word-loop/disp32
$subx-braces:emit-curly-closed:
    # eax = pop(label-stack)
    (pop %edx)
    # print(out, "_break" eax ":")
    (write-buffered *(ebp+0xc) "_break")
    (print-int32-buffered *(ebp+0xc) %eax)
    (write-buffered *(ebp+0xc) ":")
    # continue
    e9/jump  $subx-braces:next-line/disp32
$subx-braces:word-loop:
    (next-word-or-string %ecx %edi)
$subx-braces:check1:
    # if (slice-empty?(word-slice)) break
    (slice-empty? %edi)
    3d/compare-eax-and 0/imm32/false
    0f 85/jump-if-!= $subx-braces:next-line/disp32
$subx-braces:check-for-comment:
    # if (slice-starts-with?(word-slice, "#")) continue
    # . eax = *word-slice->start
    8b/-> *edi 0/r32/eax
    8a/copy-byte *eax 0/r32/AL
    81 4/subop/and %eax 0xff/imm32
    # . if (eax == '#') continue
    3d/compare-eax-and 0x23/imm32/hash
    74/jump-if-= $subx-braces:word-loop/disp8
$subx-braces:check-for-break:
    # if (!slice-starts-with?(word-slice, "break/")) goto next check
    # . eax = slice-starts-with?(word-slice, "break/")
    (slice-starts-with? %edi "break/")
    # . if (eax == false) goto next check
    3d/compare-eax-and 0/imm32/false
    74/jump-if-= $subx-braces:check-for-loop/disp8
$subx-braces:emit-break:
    (top %edx)
    # print(out, "_break" eax)
    (write-buffered *(ebp+0xc) "_break")
    (print-int32-buffered *(ebp+0xc) %eax)
    # word-slice->start += len("break")
    81 0/subop/add *edi 5/imm32/strlen
    # emit rest of word as usual
    eb/jump $subx-braces:emit-word-slice/disp8
$subx-braces:check-for-loop:
    # if (!slice-starts-with?(word-slice, "loop/")) emit word
    # . eax = slice-starts-with?(word-slice, "loop/")
    (slice-starts-with? %edi "loop/")
    # . if (eax == false) goto next check
    3d/compare-eax-and 0/imm32/false
    74/jump-if-= $subx-braces:emit-word-slice/disp8
$subx-braces:emit-loop:
    (top %edx)
    # print(out, "_loop" eax)
    (write-buffered *(ebp+0xc) "_loop")
    (print-int32-buffered *(ebp+0xc) %eax)
    # word-slice->start += len("loop")
    81 0/subop/add *edi 4/imm32/strlen
    # fall through
$subx-braces:emit-word-slice:
    # print(out, word-slice " ")
    (write-slice-buffered *(ebp+0xc) %edi)
    (write-buffered *(ebp+0xc) Space)
    # loop to next word
    e9/jump $subx-braces:word-loop/disp32
$subx-braces:next-line:
    # print(out, "\n")
    (write-buffered *(ebp+0xc) Newline)
    # loop to next line
    e9/jump $subx-braces:line-loop/disp32
$subx-braces:break:
    (flush *(ebp+0xc))
$subx-braces:end:
    # . reclaim locals
    81 0/subop/add %esp 0x29c/imm32
    # . restore registers
    5f/pop-to-edi
    5e/pop-to-esi
    5b/pop-to-ebx
    5a/pop-to-edx
    59/pop-to-ecx
    58/pop-to-eax
    # . epilogue
    89/<- %esp 5/r32/ebp
    5d/pop-to-ebp
    c3/return

test-subx-braces-passes-most-words-through:
    # . prologue
    55/push-ebp
    89/<- %ebp 4/r32/esp
    # setup
    (clear-stream _test-input-stream)
    (clear-stream _test-output-stream)
    (clear-stream $_test-input-buffered-file->buffer)
    (clear-stream $_test-output-buffered-file->buffer)
    # test
    (write _test-input-stream "== abcd 0x1")
    (subx-braces _test-input-buffered-file _test-output-buffered-file)
    # check that the line just passed through
    (flush _test-output-buffered-file)
#?     # dump _test-output-stream {{{
#?     (write 2 "^")
#?     (write-stream 2 _test-output-stream)
#?     (write 2 "$\n")
#?     # }}}
    (check-stream-equal _test-output-stream "== abcd 0x1 \n" "F - test-subx-braces-passes-most-words-through")
    # . epilogue
    89/<- %esp 5/r32/ebp
    5d/pop-to-ebp
    c3/return

test-subx-braces-1:
    # input:
    #   {
    #   ab break/imm32
    #   cd loop/imm32
    #   }
    #
    # output:
    #   _loop1:
    #   ab _break1/imm32
    #   cd _loop1/imm32
    #   _break1:
    #
    # . prologue
    55/push-ebp
    89/<- %ebp 4/r32/esp
    # setup
    (clear-stream _test-input-stream)
    (clear-stream _test-output-stream)
    (clear-stream $_test-input-buffered-file->buffer)
    (clear-stream $_test-output-buffered-file->buffer)
    # test
    (write _test-input-stream "{\nab break/imm32\ncd loop/imm32\n}")
    (subx-braces _test-input-buffered-file _test-output-buffered-file)
    # check that the line just passed through
    (flush _test-output-buffered-file)
#?     # dump _test-output-stream {{{
#?     (write 2 "^")
#?     (write-stream 2 _test-output-stream)
#?     (write 2 "$\n")
#?     # }}}
    (check-stream-equal _test-output-stream "_loop0x00000001:\nab _break0x00000001/imm32 \ncd _loop0x00000001/imm32 \n_break0x00000001:\n" "F - test-subx-braces-1")
    # . epilogue
    89/<- %esp 5/r32/ebp
    5d/pop-to-ebp
    c3/return

test-subx-braces-2:
    # input:
    #   {
    #   {
    #   ab break/imm32
    #   }
    #   cd loop/imm32
    #   }
    #
    # output:
    #   _loop1:
    #   _loop2:
    #   ab _break2/imm32
    #   _break2:
    #   cd _loop1/imm32
    #   _break1:
    #
    # . prologue
    55/push-ebp
    89/<- %ebp 4/r32/esp
    # setup
    (clear-stream _test-input-stream)
    (clear-stream _test-output-stream)
    (clear-stream $_test-input-buffered-file->buffer)
    (clear-stream $_test-output-buffered-file->buffer)
    # test
    (write _test-input-stream "{\n{\nab break/imm32\n}\ncd loop/imm32\n}")
    (subx-braces _test-input-buffered-file _test-output-buffered-file)
    # check that the line just passed through
    (flush _test-output-buffered-file)
#?     # dump _test-output-stream {{{
#?     (write 2 "^")
#?     (write-stream 2 _test-output-stream)
#?     (write 2 "$\n")
#?     # }}}
    (check-stream-equal _test-output-stream "_loop0x00000001:\n_loop0x00000002:\nab _break0x00000002/imm32 \n_break0x00000002:\ncd _loop0x00000001/imm32 \n_break0x00000001:\n" "F - test-subx-braces-2")
    # . epilogue
    89/<- %esp 5/r32/ebp
    5d/pop-to-ebp
    c3/return