Everywhere: Move shared library checks into a common function

While we're at it, unify the various different conditions that are
scattered accross the codebase.

Userland/DevTools/Profiler/Process.cpp

@@ -5,6 +5,7 @@
  */
 
 #include "Process.h"
+#include <LibCore/File.h>
 
 namespace Profiler {
 
@@ -90,7 +91,7 @@ void LibraryMetadata::handle_mmap(FlatPtr base, size_t size, const String& name)
     } else {
         String path_string = path.to_string();
         String full_path;
-        if (path_string.ends_with(".so"sv))
+        if (Core::File::looks_like_shared_library(path_string))
             full_path = String::formatted("/usr/lib/{}", path);
         else
             full_path = path_string;

Userland/DevTools/UserspaceEmulator/Emulator.cpp

@@ -15,6 +15,7 @@
 #include <AK/LexicalPath.h>
 #include <AK/MappedFile.h>
 #include <AK/StringUtils.h>
+#include <LibCore/File.h>
 #include <LibELF/AuxiliaryVector.h>
 #include <LibELF/Image.h>
 #include <LibELF/Validation.h>
@@ -395,7 +396,7 @@ MmapRegion const* Emulator::load_library_from_address(FlatPtr address)
         return {};
 
     String lib_path = lib_name;
-    if (lib_name.ends_with(".so"))
+    if (Core::File::looks_like_shared_library(lib_name))
         lib_path = String::formatted("/usr/lib/{}", lib_path);
 
     if (!m_dynamic_library_cache.contains(lib_path)) {
@@ -432,7 +433,10 @@ Optional<Emulator::SymbolInfo> Emulator::symbol_at(FlatPtr address)
     auto lib_name = address_region->lib_name();
     auto const* first_region = (lib_name.is_null() || lib_name.is_empty()) ? address_region : first_region_for_object(lib_name);
     VERIFY(first_region);
-    auto lib_path = lib_name.ends_with(".so"sv) ? String::formatted("/usr/lib/{}", lib_name) : lib_name;
+    auto lib_path = lib_name;
+    if (Core::File::looks_like_shared_library(lib_name)) {
+        lib_path = String::formatted("/usr/lib/{}", lib_name);
+    }
 
     auto it = m_dynamic_library_cache.find(lib_path);
     auto const& elf = it->value.debug_info->elf();

Userland/Libraries/LibCore/File.cpp

@@ -147,6 +147,16 @@ bool File::is_link(String const& filename)
     return S_ISLNK(st.st_mode);
 }
 
+bool File::looks_like_shared_library() const
+{
+    return File::looks_like_shared_library(m_filename);
+}
+
+bool File::looks_like_shared_library(const String& filename)
+{
+    return filename.ends_with(".so"sv) || filename.contains(".so."sv);
+}
+
 bool File::exists(String const& filename)
 {
     struct stat st;

Userland/Libraries/LibCore/File.h

@@ -32,6 +32,9 @@ public:
     bool is_link() const;
     static bool is_link(String const& filename);
 
+    bool looks_like_shared_library() const;
+    static bool looks_like_shared_library(String const& filename);
+
     static bool exists(String const& filename);
     static ErrorOr<size_t> size(String const& filename);
     static bool ensure_parent_directories(String const& path);

Userland/Libraries/LibCoredump/Backtrace.cpp

@@ -20,7 +20,7 @@ namespace Coredump {
 ELFObjectInfo const* Backtrace::object_info_for_region(ELF::Core::MemoryRegionInfo const& region)
 {
     auto path = region.object_name();
-    if (!path.starts_with('/') && (path.ends_with(".so"sv) || path.contains(".so."sv)))
+    if (!path.starts_with('/') && Core::File::looks_like_shared_library(path))
         path = LexicalPath::join("/usr/lib", path).string();
 
     auto maybe_ptr = m_debug_info_cache.get(path);

Userland/Libraries/LibCoredump/Reader.cpp

@@ -7,6 +7,7 @@
 #include <AK/JsonObject.h>
 #include <AK/JsonValue.h>
 #include <LibCompress/Gzip.h>
+#include <LibCore/File.h>
 #include <LibCoredump/Reader.h>
 #include <signal_numbers.h>
 #include <string.h>
@@ -273,7 +274,7 @@ const Reader::LibraryData* Reader::library_containing(FlatPtr address) const
     auto name = region->object_name();
 
     String path;
-    if (name.ends_with(".so"))
+    if (Core::File::looks_like_shared_library(name))
         path = String::formatted("/usr/lib/{}", name);
     else {
         path = name;

Userland/Libraries/LibDebug/DebugSession.cpp

@@ -433,7 +433,7 @@ void DebugSession::update_loaded_libs()
             return IterationDecision::Continue;
 
         String lib_name = object_path.value();
-        if (lib_name.ends_with(".so"))
+        if (Core::File::looks_like_shared_library(lib_name))
             lib_name = LexicalPath::basename(object_path.value());
 
         FlatPtr base_address = entry.as_object().get("address").to_addr();