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a0103914c2
Update sha1dc from the latest version by the upstream maintainer[1]. This version includes a commit of mine which allows for replacing the local modifications done to the upstream files in git.git with macro definitions to monkeypatch it in place. It also brings in a change[2] upstream made for the breakage 2.13.0 introduced on SPARC and other platforms that forbid unaligned access[3]. This means that the code customizations done since the initial import in commit28dc98e343("sha1dc: add collision-detecting sha1 implementation", 2017-03-16) can be done purely via Makefile definitions and by including the content of our own sha1dc_git.[ch] in sha1dc/sha1.c via a macro. 1.cc465543b32.33a694a9ee3. "Git 2.13.0 segfaults on Solaris SPARC due to DC_SHA1=YesPlease being on by default" (https://public-inbox.org/git/CACBZZX6nmKK8af0-UpjCKWV4R+hV-uk2xWXVA5U+_UQ3VXU03g@mail.gmail.com/) Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
24 lines
609 B
C
24 lines
609 B
C
/*
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* This code is included at the end of sha1dc/sha1.c with the
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* SHA1DC_CUSTOM_TRAILING_INCLUDE_SHA1_C macro.
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*/
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void git_SHA1DCFinal(unsigned char hash[20], SHA1_CTX *ctx)
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{
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if (!SHA1DCFinal(hash, ctx))
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return;
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die("SHA-1 appears to be part of a collision attack: %s",
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sha1_to_hex(hash));
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}
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void git_SHA1DCUpdate(SHA1_CTX *ctx, const void *vdata, unsigned long len)
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{
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const char *data = vdata;
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/* We expect an unsigned long, but sha1dc only takes an int */
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while (len > INT_MAX) {
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SHA1DCUpdate(ctx, data, INT_MAX);
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data += INT_MAX;
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len -= INT_MAX;
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}
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SHA1DCUpdate(ctx, data, len);
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}
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