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util/shlib_wrap.sh

 

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#!/bin/sh

 

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[ $# -ne 0 ] || set -x          # debug mode without arguments:-)

 

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THERE="`echo $0 | sed -e 's|[^/]*$||' 2>/dev/null`.."

 

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[ -d "${THERE}" ] || exec "$@"  # should never happen...

 

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# Alternative to this is to parse ${THERE}/Makefile...

 

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LIBCRYPTOSO="${THERE}/libcrypto.so"

 

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if [ -f "$LIBCRYPTOSO" ]; then

 

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    while [ -h "$LIBCRYPTOSO" ]; do

 

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        LIBCRYPTOSO="${THERE}/`ls -l "$LIBCRYPTOSO" | sed -e 's|.*\-> ||'`"

 

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    done

 

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    SOSUFFIX=`echo ${LIBCRYPTOSO} | sed -e 's|.*\.so||' 2>/dev/null`

 

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    LIBSSLSO="${THERE}/libssl.so${SOSUFFIX}"

 

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fi

 

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SYSNAME=`(uname -s) 2>/dev/null`;

 

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case "$SYSNAME" in

 

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SunOS|IRIX*)

 

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        # SunOS and IRIX run-time linkers evaluate alternative

 

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        # variables depending on target ABI...

 

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        rld_var=LD_LIBRARY_PATH

 

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        case "`(/usr/bin/file "$LIBCRYPTOSO") 2>/dev/null`" in

 

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        *ELF\ 64*SPARC*|*ELF\ 64*AMD64*)

 

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                [ -n "$LD_LIBRARY_PATH_64" ] && rld_var=LD_LIBRARY_PATH_64

 

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                LD_PRELOAD_64="$LIBCRYPTOSO $LIBSSLSO"; export LD_PRELOAD_64

 

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                preload_var=LD_PRELOAD_64

 

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                ;;

 

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        # Why are newly built .so's preloaded anyway? Because run-time

 

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        # .so lookup path embedded into application takes precedence

 

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        # over LD_LIBRARY_PATH and as result application ends up linking

 

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        # to previously installed .so's. On IRIX instead of preloading

 

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        # newly built .so's we trick run-time linker to fail to find

 

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        # the installed .so by setting _RLD_ROOT variable.

 

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        *ELF\ 32*MIPS*)

 

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                #_RLD_LIST="$LIBCRYPTOSO:$LIBSSLSO:DEFAULT"; export _RLD_LIST

 

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                _RLD_ROOT=/no/such/dir; export _RLD_ROOT

 

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                eval $rld_var=\"/usr/lib'${'$rld_var':+:$'$rld_var'}'\"

 

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                preload_var=_RLD_LIST

 

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                ;;

 

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        *ELF\ N32*MIPS*)

 

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                [ -n "$LD_LIBRARYN32_PATH" ] && rld_var=LD_LIBRARYN32_PATH

 

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                #_RLDN32_LIST="$LIBCRYPTOSO:$LIBSSLSO:DEFAULT"; export _RLDN32_LIST

 

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                _RLDN32_ROOT=/no/such/dir; export _RLDN32_ROOT

 

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                eval $rld_var=\"/usr/lib32'${'$rld_var':+:$'$rld_var'}'\"

 

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                preload_var=_RLDN32_LIST

 

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                ;;

 

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        *ELF\ 64*MIPS*)

 

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                [ -n "$LD_LIBRARY64_PATH"  ] && rld_var=LD_LIBRARY64_PATH

 

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                #_RLD64_LIST="$LIBCRYPTOSO:$LIBSSLSO:DEFAULT"; export _RLD64_LIST

 

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                _RLD64_ROOT=/no/such/dir; export _RLD64_ROOT

 

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                eval $rld_var=\"/usr/lib64'${'$rld_var':+:$'$rld_var'}'\"

 

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                preload_var=_RLD64_LIST

 

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                ;;

 

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        esac

 

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        eval $rld_var=\"${THERE}'${'$rld_var':+:$'$rld_var'}'\"; export $rld_var

 

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        unset rld_var

 

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        ;;

 

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*)      LD_LIBRARY_PATH="${THERE}:$LD_LIBRARY_PATH"     # Linux, ELF HP-UX

 

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        DYLD_LIBRARY_PATH="${THERE}:$DYLD_LIBRARY_PATH" # MacOS X

 

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        SHLIB_PATH="${THERE}:$SHLIB_PATH"               # legacy HP-UX

 

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        LIBPATH="${THERE}:$LIBPATH"                     # AIX, OS/2

 

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        export LD_LIBRARY_PATH DYLD_LIBRARY_PATH SHLIB_PATH LIBPATH

 

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        # Even though $PATH is adjusted [for Windows sake], it doesn't

 

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        # necessarily does the trick. Trouble is that with introduction

 

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        # of SafeDllSearchMode in XP/2003 it's more appropriate to copy

 

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        # .DLLs in vicinity of executable, which is done elsewhere...

 

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        if [ "$OSTYPE" != msdosdjgpp ]; then

 

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                PATH="${THERE}:$PATH"; export PATH

 

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        fi

 

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        ;;

 

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esac

 

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if [ -f "$LIBCRYPTOSO" -a -z "$preload_var" ]; then

 

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        # Following three lines are major excuse for isolating them into

 

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        # this wrapper script. Original reason for setting LD_PRELOAD

 

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        # was to make it possible to pass 'make test' when user linked

 

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        # with -rpath pointing to previous version installation. Wrapping

 

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        # it into a script makes it possible to do so on multi-ABI

 

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        # platforms.

 

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        case "$SYSNAME" in

 

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        *BSD|QNX)       LD_PRELOAD="$LIBCRYPTOSO:$LIBSSLSO" ;;  # *BSD, QNX

 

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        *)      LD_PRELOAD="$LIBCRYPTOSO $LIBSSLSO" ;;  # SunOS, Linux, ELF HP-UX

 

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        esac

 

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        _RLD_LIST="$LIBCRYPTOSO:$LIBSSLSO:DEFAULT"      # Tru64, o32 IRIX

 

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        DYLD_INSERT_LIBRARIES="$LIBCRYPTOSO:$LIBSSLSO"  # MacOS X

 

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        export LD_PRELOAD _RLD_LIST DYLD_INSERT_LIBRARIES

 

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fi

 

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exec "$@"

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