added elf_interpreteR_path

build/libelfmaster.pc

@@ -2,9 +2,10 @@ prefix=/opt/elfmaster
 includedir=/opt/elfmaster/include
 libdir=/opt/elfmaster/lib
 
-Name: Backtrace I/O pdb parsing library
-Description: Library for the loading and parsing of pdb files
-URL: http://backtrace.io/
+Name: Advanced ELF binary parsing API
+Description: Library for the loading, parsing, modifying and
+forensic reconstruction of ELF binaries.
+URL: https://github.com/elfmaster/libelfmaster
 Version: 0.1.0
 Cflags: -D__x86_64__ -I${includedir} -D_GNU_SOURCE
 

examples/Makefile

@@ -33,6 +33,7 @@ all:
 	$(CC) -Wl,-z,separate-code test.c -o test_scop_pie
 	$(CC) -no-pie -Wl,-z,separate-code test.c -o test_scop_binary
 	$(CC) -O2 -g pltgot.c -o pltgot ../src/libelfmaster.a
+	$(CC) phoff.c -o phoff ../src/libelfmaster.a
 	./stripx test_stripped
 	./stripx test32_stripped
 clean:

include/libelfmaster.h

@@ -990,4 +990,5 @@ bool elf_section_commit(elfobj_t *);
 bool elf_lxc_set_rootfs(elfobj_t *, const char *);
 bool elf_lxc_get_rootfs(elfobj_t *, char *, const size_t);
 
+char * elf_interpreter_path(elfobj_t *);
 #endif

src/libelfmaster.c

@@ -3235,6 +3235,23 @@ elf_open_object(const char *path, struct elfobj *obj, uint64_t load_flags,
 	return false;
 }
 
+char *
+elf_interpreter_path(elfobj_t *obj)
+{
+	struct elf_segment segment;
+	elf_segment_iterator_t p_iter;
+	char *path;
+
+	elf_segment_iterator_init(obj, &p_iter);
+	while (elf_segment_iterator_next(&p_iter, &segment) == ELF_ITER_OK) {
+		if (segment.type == PT_INTERP) {
+			path = elf_offset_pointer(obj, segment.offset);
+			return path;
+		}
+	}
+	return NULL;
+}
+
 void
 elf_close_object(elfobj_t *obj)
 {