mirror of
https://github.com/subsurface/subsurface.git
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Get the SHA1 routines from git instead of openssl
..they are of a higher quality anyway, and this way we have one less library to worry about. And this way there is nobody who can claim that openssl is not a system library and thus not compatible with the GPL. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
Linus Torvalds
Dirk Hohndel
parent
306d503528
commit
a0558a87b4
4 changed files with 321 additions and 3 deletions
4
Makefile
4
Makefile
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@ -141,7 +141,7 @@ ifneq ($(strip $(LIBXSLT)),)
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endif
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endif
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LIBS = $(LIBXML2) $(LIBXSLT) $(LIBGTK) $(LIBGCONF2) $(LIBDIVECOMPUTER) $(EXTRALIBS) $(LIBZIP) -lpthread -lm -lssl -lcrypto $(LIBOSMGPSMAP) $(LIBSOUP)
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LIBS = $(LIBXML2) $(LIBXSLT) $(LIBGTK) $(LIBGCONF2) $(LIBDIVECOMPUTER) $(EXTRALIBS) $(LIBZIP) -lpthread -lm $(LIBOSMGPSMAP) $(LIBSOUP)
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MSGLANGS=$(notdir $(wildcard po/*po))
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MSGOBJS=$(addprefix share/locale/,$(MSGLANGS:.po=.UTF-8/LC_MESSAGES/subsurface.mo))
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@ -149,7 +149,7 @@ MSGOBJS=$(addprefix share/locale/,$(MSGLANGS:.po=.UTF-8/LC_MESSAGES/subsurface.m
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OBJS = main.o dive.o time.o profile.o info.o equipment.o divelist.o deco.o planner.o \
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parse-xml.o save-xml.o libdivecomputer.o print.o uemis.o uemis-downloader.o \
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gtk-gui.o statistics.o file.o cochran.o device.o download-dialog.o prefs.o \
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webservice.o $(GPSOBJ) $(OSSUPPORT).o $(RESFILE)
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webservice.o sha1.o $(GPSOBJ) $(OSSUPPORT).o $(RESFILE)
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DEPS = $(wildcard .dep/*.dep)
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3
dive.h
3
dive.h
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@ -9,7 +9,8 @@
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#include <glib.h>
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#include <glib/gstdio.h>
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#include <libxml/tree.h>
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#include <openssl/sha.h>
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#include "sha1.h"
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#define O2_IN_AIR 209 // permille
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#define N2_IN_AIR 781
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284
sha1.c
Normal file
284
sha1.c
Normal file
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@ -0,0 +1,284 @@
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/*
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* SHA1 routine optimized to do word accesses rather than byte accesses,
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* and to avoid unnecessary copies into the context array.
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*
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* This was initially based on the Mozilla SHA1 implementation, although
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* none of the original Mozilla code remains.
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*/
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/* this is only to get definitions for memcpy(), ntohl() and htonl() */
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#include <string.h>
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#include <arpa/inet.h>
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#include "sha1.h"
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#if defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))
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/*
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* Force usage of rol or ror by selecting the one with the smaller constant.
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* It _can_ generate slightly smaller code (a constant of 1 is special), but
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* perhaps more importantly it's possibly faster on any uarch that does a
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* rotate with a loop.
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*/
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#define SHA_ASM(op, x, n) ({ unsigned int __res; __asm__(op " %1,%0":"=r" (__res):"i" (n), "0" (x)); __res; })
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#define SHA_ROL(x,n) SHA_ASM("rol", x, n)
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#define SHA_ROR(x,n) SHA_ASM("ror", x, n)
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#else
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#define SHA_ROT(X,l,r) (((X) << (l)) | ((X) >> (r)))
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#define SHA_ROL(X,n) SHA_ROT(X,n,32-(n))
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#define SHA_ROR(X,n) SHA_ROT(X,32-(n),n)
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#endif
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/*
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* If you have 32 registers or more, the compiler can (and should)
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* try to change the array[] accesses into registers. However, on
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* machines with less than ~25 registers, that won't really work,
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* and at least gcc will make an unholy mess of it.
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*
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* So to avoid that mess which just slows things down, we force
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* the stores to memory to actually happen (we might be better off
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* with a 'W(t)=(val);asm("":"+m" (W(t))' there instead, as
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* suggested by Artur Skawina - that will also make gcc unable to
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* try to do the silly "optimize away loads" part because it won't
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* see what the value will be).
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*
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* Ben Herrenschmidt reports that on PPC, the C version comes close
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* to the optimized asm with this (ie on PPC you don't want that
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* 'volatile', since there are lots of registers).
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*
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* On ARM we get the best code generation by forcing a full memory barrier
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* between each SHA_ROUND, otherwise gcc happily get wild with spilling and
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* the stack frame size simply explode and performance goes down the drain.
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*/
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#if defined(__i386__) || defined(__x86_64__)
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#define setW(x, val) (*(volatile unsigned int *)&W(x) = (val))
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#elif defined(__GNUC__) && defined(__arm__)
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#define setW(x, val) do { W(x) = (val); __asm__("":::"memory"); } while (0)
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#else
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#define setW(x, val) (W(x) = (val))
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#endif
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/*
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* Performance might be improved if the CPU architecture is OK with
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* unaligned 32-bit loads and a fast ntohl() is available.
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* Otherwise fall back to byte loads and shifts which is portable,
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* and is faster on architectures with memory alignment issues.
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*/
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#if defined(__i386__) || defined(__x86_64__) || \
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defined(_M_IX86) || defined(_M_X64) || \
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defined(__ppc__) || defined(__ppc64__) || \
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defined(__powerpc__) || defined(__powerpc64__) || \
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defined(__s390__) || defined(__s390x__)
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#define get_be32(p) ntohl(*(unsigned int *)(p))
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#define put_be32(p, v) do { *(unsigned int *)(p) = htonl(v); } while (0)
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#else
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#define get_be32(p) ( \
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(*((unsigned char *)(p) + 0) << 24) | \
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(*((unsigned char *)(p) + 1) << 16) | \
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(*((unsigned char *)(p) + 2) << 8) | \
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(*((unsigned char *)(p) + 3) << 0) )
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#define put_be32(p, v) do { \
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unsigned int __v = (v); \
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*((unsigned char *)(p) + 0) = __v >> 24; \
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*((unsigned char *)(p) + 1) = __v >> 16; \
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*((unsigned char *)(p) + 2) = __v >> 8; \
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*((unsigned char *)(p) + 3) = __v >> 0; } while (0)
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#endif
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/* This "rolls" over the 512-bit array */
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#define W(x) (array[(x)&15])
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/*
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* Where do we get the source from? The first 16 iterations get it from
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* the input data, the next mix it from the 512-bit array.
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*/
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#define SHA_SRC(t) get_be32((unsigned char *) block + (t)*4)
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#define SHA_MIX(t) SHA_ROL(W((t)+13) ^ W((t)+8) ^ W((t)+2) ^ W(t), 1);
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#define SHA_ROUND(t, input, fn, constant, A, B, C, D, E) do { \
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unsigned int TEMP = input(t); setW(t, TEMP); \
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E += TEMP + SHA_ROL(A,5) + (fn) + (constant); \
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B = SHA_ROR(B, 2); } while (0)
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#define T_0_15(t, A, B, C, D, E) SHA_ROUND(t, SHA_SRC, (((C^D)&B)^D) , 0x5a827999, A, B, C, D, E )
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#define T_16_19(t, A, B, C, D, E) SHA_ROUND(t, SHA_MIX, (((C^D)&B)^D) , 0x5a827999, A, B, C, D, E )
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#define T_20_39(t, A, B, C, D, E) SHA_ROUND(t, SHA_MIX, (B^C^D) , 0x6ed9eba1, A, B, C, D, E )
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#define T_40_59(t, A, B, C, D, E) SHA_ROUND(t, SHA_MIX, ((B&C)+(D&(B^C))) , 0x8f1bbcdc, A, B, C, D, E )
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#define T_60_79(t, A, B, C, D, E) SHA_ROUND(t, SHA_MIX, (B^C^D) , 0xca62c1d6, A, B, C, D, E )
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static void blk_SHA1_Block(blk_SHA_CTX *ctx, const void *block)
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{
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unsigned int A,B,C,D,E;
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unsigned int array[16];
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A = ctx->H[0];
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B = ctx->H[1];
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C = ctx->H[2];
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D = ctx->H[3];
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E = ctx->H[4];
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/* Round 1 - iterations 0-16 take their input from 'block' */
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T_0_15( 0, A, B, C, D, E);
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T_0_15( 1, E, A, B, C, D);
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T_0_15( 2, D, E, A, B, C);
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T_0_15( 3, C, D, E, A, B);
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T_0_15( 4, B, C, D, E, A);
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T_0_15( 5, A, B, C, D, E);
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T_0_15( 6, E, A, B, C, D);
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T_0_15( 7, D, E, A, B, C);
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T_0_15( 8, C, D, E, A, B);
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T_0_15( 9, B, C, D, E, A);
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T_0_15(10, A, B, C, D, E);
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T_0_15(11, E, A, B, C, D);
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T_0_15(12, D, E, A, B, C);
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T_0_15(13, C, D, E, A, B);
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T_0_15(14, B, C, D, E, A);
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T_0_15(15, A, B, C, D, E);
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/* Round 1 - tail. Input from 512-bit mixing array */
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T_16_19(16, E, A, B, C, D);
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T_16_19(17, D, E, A, B, C);
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T_16_19(18, C, D, E, A, B);
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T_16_19(19, B, C, D, E, A);
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/* Round 2 */
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T_20_39(20, A, B, C, D, E);
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T_20_39(21, E, A, B, C, D);
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T_20_39(22, D, E, A, B, C);
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T_20_39(23, C, D, E, A, B);
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T_20_39(24, B, C, D, E, A);
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T_20_39(25, A, B, C, D, E);
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T_20_39(26, E, A, B, C, D);
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T_20_39(27, D, E, A, B, C);
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T_20_39(28, C, D, E, A, B);
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T_20_39(29, B, C, D, E, A);
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T_20_39(30, A, B, C, D, E);
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T_20_39(31, E, A, B, C, D);
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T_20_39(32, D, E, A, B, C);
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T_20_39(33, C, D, E, A, B);
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T_20_39(34, B, C, D, E, A);
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T_20_39(35, A, B, C, D, E);
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T_20_39(36, E, A, B, C, D);
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T_20_39(37, D, E, A, B, C);
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T_20_39(38, C, D, E, A, B);
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T_20_39(39, B, C, D, E, A);
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/* Round 3 */
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T_40_59(40, A, B, C, D, E);
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T_40_59(41, E, A, B, C, D);
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T_40_59(42, D, E, A, B, C);
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T_40_59(43, C, D, E, A, B);
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T_40_59(44, B, C, D, E, A);
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T_40_59(45, A, B, C, D, E);
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T_40_59(46, E, A, B, C, D);
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T_40_59(47, D, E, A, B, C);
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T_40_59(48, C, D, E, A, B);
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T_40_59(49, B, C, D, E, A);
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T_40_59(50, A, B, C, D, E);
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T_40_59(51, E, A, B, C, D);
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T_40_59(52, D, E, A, B, C);
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T_40_59(53, C, D, E, A, B);
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T_40_59(54, B, C, D, E, A);
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T_40_59(55, A, B, C, D, E);
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T_40_59(56, E, A, B, C, D);
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T_40_59(57, D, E, A, B, C);
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T_40_59(58, C, D, E, A, B);
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T_40_59(59, B, C, D, E, A);
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/* Round 4 */
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T_60_79(60, A, B, C, D, E);
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T_60_79(61, E, A, B, C, D);
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T_60_79(62, D, E, A, B, C);
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T_60_79(63, C, D, E, A, B);
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T_60_79(64, B, C, D, E, A);
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T_60_79(65, A, B, C, D, E);
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T_60_79(66, E, A, B, C, D);
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T_60_79(67, D, E, A, B, C);
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T_60_79(68, C, D, E, A, B);
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T_60_79(69, B, C, D, E, A);
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T_60_79(70, A, B, C, D, E);
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T_60_79(71, E, A, B, C, D);
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T_60_79(72, D, E, A, B, C);
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T_60_79(73, C, D, E, A, B);
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T_60_79(74, B, C, D, E, A);
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T_60_79(75, A, B, C, D, E);
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T_60_79(76, E, A, B, C, D);
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T_60_79(77, D, E, A, B, C);
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T_60_79(78, C, D, E, A, B);
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T_60_79(79, B, C, D, E, A);
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ctx->H[0] += A;
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ctx->H[1] += B;
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ctx->H[2] += C;
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ctx->H[3] += D;
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ctx->H[4] += E;
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}
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void blk_SHA1_Init(blk_SHA_CTX *ctx)
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{
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ctx->size = 0;
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/* Initialize H with the magic constants (see FIPS180 for constants) */
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ctx->H[0] = 0x67452301;
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ctx->H[1] = 0xefcdab89;
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ctx->H[2] = 0x98badcfe;
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ctx->H[3] = 0x10325476;
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ctx->H[4] = 0xc3d2e1f0;
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}
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void blk_SHA1_Update(blk_SHA_CTX *ctx, const void *data, unsigned long len)
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{
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unsigned int lenW = ctx->size & 63;
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ctx->size += len;
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/* Read the data into W and process blocks as they get full */
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if (lenW) {
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unsigned int left = 64 - lenW;
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if (len < left)
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left = len;
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memcpy(lenW + (char *)ctx->W, data, left);
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lenW = (lenW + left) & 63;
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len -= left;
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data = ((const char *)data + left);
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if (lenW)
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return;
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blk_SHA1_Block(ctx, ctx->W);
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}
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while (len >= 64) {
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blk_SHA1_Block(ctx, data);
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data = ((const char *)data + 64);
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len -= 64;
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}
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if (len)
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memcpy(ctx->W, data, len);
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}
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void blk_SHA1_Final(unsigned char hashout[20], blk_SHA_CTX *ctx)
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{
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static const unsigned char pad[64] = { 0x80 };
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unsigned int padlen[2];
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int i;
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/* Pad with a binary 1 (ie 0x80), then zeroes, then length */
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padlen[0] = htonl((uint32_t)(ctx->size >> 29));
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padlen[1] = htonl((uint32_t)(ctx->size << 3));
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i = ctx->size & 63;
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blk_SHA1_Update(ctx, pad, 1+ (63 & (55 - i)));
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blk_SHA1_Update(ctx, padlen, 8);
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/* Output hash */
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for (i = 0; i < 5; i++)
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put_be32(hashout + i*4, ctx->H[i]);
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}
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33
sha1.h
Normal file
33
sha1.h
Normal file
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@ -0,0 +1,33 @@
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/*
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* SHA1 routine optimized to do word accesses rather than byte accesses,
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* and to avoid unnecessary copies into the context array.
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*
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* This was initially based on the Mozilla SHA1 implementation, although
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* none of the original Mozilla code remains.
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*/
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typedef struct {
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unsigned long long size;
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unsigned int H[5];
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unsigned int W[16];
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} blk_SHA_CTX;
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void blk_SHA1_Init(blk_SHA_CTX *ctx);
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void blk_SHA1_Update(blk_SHA_CTX *ctx, const void *dataIn, unsigned long len);
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void blk_SHA1_Final(unsigned char hashout[20], blk_SHA_CTX *ctx);
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/* Make us use the standard names */
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#define SHA_CTX blk_SHA_CTX
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#define SHA1_Init blk_SHA1_Init
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#define SHA1_Update blk_SHA1_Update
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#define SHA1_Final blk_SHA1_Final
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/* Trivial helper function */
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static inline void SHA1(const void *dataIn, unsigned long len, unsigned char hashout[20])
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{
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SHA_CTX ctx;
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SHA1_Init(&ctx);
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SHA1_Update(&ctx, dataIn, len);
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SHA1_Final(hashout, &ctx);
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}
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Reference in a new issue