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forked from pool/protobuf-c
Richard Brown 2022-07-27 19:46:59 +00:00 committed by Git OBS Bridge
parent ec63d3f455
commit 89e7cee34c
3 changed files with 4 additions and 110 deletions

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@ -1,86 +0,0 @@
From 6e389ce2c34355d36009a8fb1666bed29fa2d4f4 Mon Sep 17 00:00:00 2001
From: "Todd C. Miller" <Todd.Miller@sudo.ws>
Date: Mon, 6 Jun 2022 13:57:38 -0600
Subject: [PATCH] Only shift unsigned values to avoid implementation-specific
behavior. This converts the arithmetic shifts to logical shifts. It is based
in part on a stackoverflow answer by John Schultz,
https://stackoverflow.com/questions/4533076/google-protocol-buffers-zigzag-encoding
---
protobuf-c/protobuf-c.c | 23 +++++++++++------------
1 file changed, 11 insertions(+), 12 deletions(-)
diff --git a/protobuf-c/protobuf-c.c b/protobuf-c/protobuf-c.c
index ad1bdb1..98052cd 100644
--- a/protobuf-c/protobuf-c.c
+++ b/protobuf-c/protobuf-c.c
@@ -316,9 +316,8 @@ int32_size(int32_t v)
static inline uint32_t
zigzag32(int32_t v)
{
- // Note: the right-shift must be arithmetic
- // Note: left shift must be unsigned because of overflow
- return ((uint32_t)(v) << 1) ^ (uint32_t)(v >> 31);
+ // Note: Using unsigned types prevents undefined behavior
+ return ((uint32_t)v << 1) ^ -((uint32_t)v >> 31);
}
/**
@@ -380,9 +379,8 @@ uint64_size(uint64_t v)
static inline uint64_t
zigzag64(int64_t v)
{
- // Note: the right-shift must be arithmetic
- // Note: left shift must be unsigned because of overflow
- return ((uint64_t)(v) << 1) ^ (uint64_t)(v >> 63);
+ // Note: Using unsigned types prevents undefined behavior
+ return ((uint64_t)v << 1) ^ -((uint64_t)v >> 63);
}
/**
@@ -802,7 +800,8 @@ uint32_pack(uint32_t value, uint8_t *out)
}
/**
- * Pack a signed 32-bit integer and return the number of bytes written.
+ * Pack a signed 32-bit integer and return the number of bytes written,
+ * passed as unsigned to avoid implementation-specific behavior.
* Negative numbers are encoded as two's complement 64-bit integers.
*
* \param value
@@ -813,14 +812,14 @@ uint32_pack(uint32_t value, uint8_t *out)
* Number of bytes written to `out`.
*/
static inline size_t
-int32_pack(int32_t value, uint8_t *out)
+int32_pack(uint32_t value, uint8_t *out)
{
- if (value < 0) {
+ if ((int32_t)value < 0) {
out[0] = value | 0x80;
out[1] = (value >> 7) | 0x80;
out[2] = (value >> 14) | 0x80;
out[3] = (value >> 21) | 0x80;
- out[4] = (value >> 28) | 0x80;
+ out[4] = (value >> 28) | 0xf0;
out[5] = out[6] = out[7] = out[8] = 0xff;
out[9] = 0x01;
return 10;
@@ -2425,7 +2424,7 @@ static inline int32_t
unzigzag32(uint32_t v)
{
// Note: Using unsigned types prevents undefined behavior
- return (int32_t)((v >> 1) ^ (~(v & 1) + 1));
+ return (int32_t)((v >> 1) ^ -(v & 1));
}
static inline uint32_t
@@ -2467,7 +2466,7 @@ static inline int64_t
unzigzag64(uint64_t v)
{
// Note: Using unsigned types prevents undefined behavior
- return (int64_t)((v >> 1) ^ (~(v & 1) + 1));
+ return (int64_t)((v >> 1) ^ -(v & 1));
}
static inline uint64_t

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@ -1,12 +1,3 @@
-------------------------------------------------------------------
Tue Jul 5 12:38:17 UTC 2022 - Adam Majer <adam.majer@suse.de>
- Do not build static libraries
- Run unit tests
- Explicit files and directories for includedir, so we can detect
what we actually install there
- 508.patch: fixes invalid arithmetic shift (bsc#1200908, CVE-2022-33070)
-------------------------------------------------------------------
Tue Nov 23 10:10:53 UTC 2021 - Bjørn Lie <bjorn.lie@gmail.com>

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@ -26,7 +26,6 @@ License: BSD-3-Clause
Group: Development/Tools/Other
URL: https://github.com/protobuf-c/protobuf-c
Source: https://github.com/protobuf-c/protobuf-c/releases/download/v%version/%name-%version.tar.gz
Patch1: 508.patch
BuildRequires: autoconf
BuildRequires: automake
BuildRequires: gcc
@ -55,7 +54,7 @@ Summary: C bindings for Google's Protocol Buffers
Group: Development/Libraries/C and C++
Requires: libprotobuf-c%sover = %version
Provides: %name = %version
Obsoletes: %name <= 1.4.0
Obsoletes: %name <= %version
%description -n libprotobuf-c-devel
This package provides a code generator and runtime libraries to use Protocol
@ -65,20 +64,14 @@ Buffers from pure C (not C++).
%autosetup -p1
%build
%{!?make_build:%define make_build make -O %{?_smp_mflags} V=1 VERBOSE=1}
%define _lto_cflags %nil
autoreconf -fvi
%configure \
--enable-static=no
%configure
%make_build
%install
%make_install
rm %buildroot/%_libdir/*.la
%check
make check
rm "%buildroot/%_libdir"/*.a "%buildroot/%_libdir"/*.la
%post -n libprotobuf-c%sover -p /sbin/ldconfig
%postun -n libprotobuf-c%sover -p /sbin/ldconfig
@ -90,13 +83,9 @@ make check
%files -n libprotobuf-c-devel
%doc ChangeLog TODO
%dir %_includedir/protobuf-c
%dir %_includedir/google
%dir %_includedir/google/protobuf-c
%_includedir/protobuf-c/*
%_includedir/google/protobuf-c/protobuf-c.h
%_bindir/protoc-c
%_bindir/protoc-gen-c
%_includedir/*/
%_libdir/libprotobuf-c.so
%_libdir/pkgconfig/libprotobuf-c.pc