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From a4d32450c3565f5dba9e027283ea3dd40a21138e Mon Sep 17 00:00:00 2001
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From: Denis 'GNUtoo' Carikli <GNUtoo@no-log.org>
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Date: Mon, 9 Jan 2017 21:50:19 +0100
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Subject: [PATCH 41/43] osutils: don't segfault on empty files.
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In the "string operating_system()" method, the GNU/Linux
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distribution is detected by trying to open various files
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like /etc/lsb_release.
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Without that patch, If one of such file is present and empty,
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lshw -dump will produce a segmentation fault.
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On the Parabola GNU/Linux distribution (An arch derivative),
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/etc/arch-release is empty.
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Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@no-log.org>
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---
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src/core/osutils.cc | 42 +++++++++++++++++++++---------------------
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1 file changed, 21 insertions(+), 21 deletions(-)
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diff --git a/src/core/osutils.cc b/src/core/osutils.cc
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index cc03dc4..e93b79e 100644
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--- a/src/core/osutils.cc
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+++ b/src/core/osutils.cc
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@@ -773,47 +773,47 @@ string operating_system()
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struct utsname u;
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string os = "";
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- if(loadfile("/etc/lsb-release", osinfo))
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+ if(loadfile("/etc/lsb-release", osinfo) && (osinfo.size() > 0))
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os = osinfo[0];
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- else if(loadfile("/etc/lsb_release", osinfo))
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+ else if(loadfile("/etc/lsb_release", osinfo) && (osinfo.size() > 0))
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os = osinfo[0];
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- else if(loadfile("/etc/system-release", osinfo))
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+ else if(loadfile("/etc/system-release", osinfo) && (osinfo.size() > 0))
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os = osinfo[0];
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- else if(loadfile("/etc/release", osinfo))
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+ else if(loadfile("/etc/release", osinfo) && (osinfo.size() > 0))
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os = osinfo[0];
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- else if(loadfile("/etc/arch-release", osinfo))
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+ else if(loadfile("/etc/arch-release", osinfo) && (osinfo.size() > 0))
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os = osinfo[0];
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- else if(loadfile("/etc/arklinux-release", osinfo))
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+ else if(loadfile("/etc/arklinux-release", osinfo) && (osinfo.size() > 0))
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os = osinfo[0];
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- else if(loadfile("/etc/aurox-release", osinfo))
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+ else if(loadfile("/etc/aurox-release", osinfo) && (osinfo.size() > 0))
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os = osinfo[0];
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- else if(loadfile("/etc/conectiva-release", osinfo))
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+ else if(loadfile("/etc/conectiva-release", osinfo) && (osinfo.size() > 0))
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os = osinfo[0];
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- else if(loadfile("/etc/debian_version", osinfo))
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+ else if(loadfile("/etc/debian_version", osinfo) && (osinfo.size() > 0))
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os = osinfo[0];
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- else if(loadfile("/etc/fedora-release", osinfo))
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+ else if(loadfile("/etc/fedora-release", osinfo) && (osinfo.size() > 0))
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os = osinfo[0];
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- else if(loadfile("/etc/gentoo-release", osinfo))
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+ else if(loadfile("/etc/gentoo-release", osinfo) && (osinfo.size() > 0))
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os = osinfo[0];
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- else if(loadfile("/etc/linuxppc-release", osinfo))
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+ else if(loadfile("/etc/linuxppc-release", osinfo) && (osinfo.size() > 0))
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os = osinfo[0];
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- else if(loadfile("/etc/mandrake-release", osinfo))
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+ else if(loadfile("/etc/mandrake-release", osinfo) && (osinfo.size() > 0))
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os = osinfo[0];
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- else if(loadfile("/etc/mandriva-release", osinfo))
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+ else if(loadfile("/etc/mandriva-release", osinfo) && (osinfo.size() > 0))
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os = osinfo[0];
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- else if(loadfile("/etc/novell-release", osinfo))
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+ else if(loadfile("/etc/novell-release", osinfo) && (osinfo.size() > 0))
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os = osinfo[0];
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- else if(loadfile("/etc/pld-release", osinfo))
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+ else if(loadfile("/etc/pld-release", osinfo) && (osinfo.size() > 0))
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os = osinfo[0];
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- else if(loadfile("/etc/redhat-release", osinfo))
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+ else if(loadfile("/etc/redhat-release", osinfo) && (osinfo.size() > 0))
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os = osinfo[0];
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- else if(loadfile("/etc/slackware-version", osinfo))
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+ else if(loadfile("/etc/slackware-version", osinfo) && (osinfo.size() > 0))
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os = osinfo[0];
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- else if(loadfile("/etc/sun-release", osinfo))
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+ else if(loadfile("/etc/sun-release", osinfo) && (osinfo.size() > 0))
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os = osinfo[0];
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- else if(loadfile("/etc/SuSE-release", osinfo))
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+ else if(loadfile("/etc/SuSE-release", osinfo) && (osinfo.size() > 0))
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os = osinfo[0];
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- else if(loadfile("/etc/yellowdog-release", osinfo))
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+ else if(loadfile("/etc/yellowdog-release", osinfo) && (osinfo.size() > 0))
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os = osinfo[0];
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if(uname(&u) != 0) return "";
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--
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2.10.2
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