check-so-resolves

#!/bin/bash

# Description: Recursively scans /opt for ELF files and checks for unresolvable shared object links.
source ./is_elf

check_dependencies() {
    local file_path="$1"

    # can't run ldd on non-executables
    if [[ ! -x "$file_path" ]]; then
        return
    fi

    # Use ldd to list dependencies; suppress standard error to handle broken links gracefully
    ldd_output=$(ldd "$file_path" 2>&1)
    ldd_status=$?

    if [[ $ldd_status -ne 0 ]]; then
        echo "Error: ldd failed for $file_path"
        echo "ldd output: $ldd_output"
        return
    fi

    # Check for "not found" in ldd output indicating unresolved dependencies
    not_found=$(echo "$ldd_output" | grep "not found")
    if [[ -n "$not_found" ]]; then
        echo "Unresolvable shared objects in: $file_path"
        echo "$not_found"
        echo ""
    fi
}

# Export functions and variables for use in subshells (if needed)
export -f is_elf
export -f check_dependencies

DIRS="/opt /usr/local"
for d in $DIRS
do
    echo "Scanning $d for ELF files and checking dependencies..."
    find $d -type f 2>/dev/null | while IFS= read -r file; do
        if is_elf "$file" ; then
            check_dependencies "$file"
        fi
    done
done