diff options
| author | Daniel Bertalan <dani@danielbertalan.dev> | 2022-01-19 22:50:58 +0100 |
|---|---|---|
| committer | Brian Gianforcaro <b.gianfo@gmail.com> | 2022-01-24 10:41:47 +0000 |
| commit | b509d8a2f7ac91bbbecd39f1f9ca2b0a4bd7a2fe (patch) | |
| tree | ccbe070a6114d0d85f110b0aed24cd9c9eeadfa7 | |
| parent | 4055c393fc996cf087bda3683b206594bb32bcb6 (diff) | |
Utilities/readelf: Add support for printing the content of sections
| -rw-r--r-- | Base/usr/share/man/man1/readelf.md | 3 | ||||
| -rw-r--r-- | Userland/Utilities/readelf.cpp | 18 |
2 files changed, 19 insertions, 2 deletions
diff --git a/Base/usr/share/man/man1/readelf.md b/Base/usr/share/man/man1/readelf.md index 6f2e59e60f..08effd75ac 100644 --- a/Base/usr/share/man/man1/readelf.md +++ b/Base/usr/share/man/man1/readelf.md @@ -5,7 +5,7 @@ readelf ## Synopsis ```sh -$ readelf [--all] [--file-header] [--program-headers] [--section-headers] [--headers] [--syms] [--dyn-syms] [--dynamic] [--notes] [--relocs] [--unwind] [--checksec] <path> +$ readelf [--all] [--file-header] [--program-headers] [--section-headers] [--headers] [--syms] [--dyn-syms] [--dynamic] [--notes] [--relocs] [--unwind] [--checksec] [--string-dump section-name] <path> ``` ## Options: @@ -24,6 +24,7 @@ $ readelf [--all] [--file-header] [--program-headers] [--section-headers] [--hea * `-r`, `--relocs`: Display relocations * `-u`, `--unwind`: Display unwind info * `-c`, `--checksec`: Display security hardening info +* `-p section-name`, `--string-dump section-name`: Display the contents of a section as strings ## Arguments: diff --git a/Userland/Utilities/readelf.cpp b/Userland/Utilities/readelf.cpp index 5aae35b4d0..1946ee3c47 100644 --- a/Userland/Utilities/readelf.cpp +++ b/Userland/Utilities/readelf.cpp @@ -1,5 +1,5 @@ /* - * Copyright (c) 2020, the SerenityOS developers. + * Copyright (c) 2020-2022, the SerenityOS developers. * * SPDX-License-Identifier: BSD-2-Clause */ @@ -242,6 +242,7 @@ int main(int argc, char** argv) static bool display_unwind_info = false; static bool display_dynamic_section = false; static bool display_hardening = false; + StringView string_dump_section {}; Core::ArgsParser args_parser; args_parser.add_option(display_all, "Display all", "all", 'a'); @@ -256,6 +257,7 @@ int main(int argc, char** argv) args_parser.add_option(display_relocations, "Display relocations", "relocs", 'r'); args_parser.add_option(display_unwind_info, "Display unwind info", "unwind", 'u'); args_parser.add_option(display_hardening, "Display security hardening info", "checksec", 'c'); + args_parser.add_option(string_dump_section, "Display the contents of a section as strings", "string-dump", 'p', "section-name"); args_parser.add_positional_argument(path, "ELF path", "path"); args_parser.parse(argc, argv); @@ -717,5 +719,19 @@ int main(int argc, char** argv) outln(); } + if (!string_dump_section.is_null()) { + auto maybe_section = elf_image.lookup_section(string_dump_section); + if (maybe_section.has_value()) { + outln("String dump of section \'{}\':", string_dump_section); + StringView data(maybe_section->raw_data(), maybe_section->size()); + data.for_each_split_view('\0', false, [&data](auto string) { + auto offset = string.characters_without_null_termination() - data.characters_without_null_termination(); + outln("[{:6x}] {}", offset, string); + }); + } else { + warnln("Could not find section \'{}\'", string_dump_section); + return 1; + } + } return 0; } |