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156 lines
3.7 KiB
156 lines
3.7 KiB
--- chrpath-0.16/Makefile.am 2014-01-12 08:52:21.000000000 +0100
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+++ chrpath-0.16-ng/Makefile.am 2019-05-19 11:23:48.352936406 +0200
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@@ -12,11 +12,18 @@
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fakeroot debian/rules binary
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chrpath_SOURCES = \
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- chrpath.c \
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- killrpath.c \
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main.c \
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- elf.c \
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protos.h
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+
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+chrpath_LDADD = $(LDLIBS)
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+
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+lib_LTLIBRARIES = libchrpath32.la libchrpath64.la
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+libchrpath32_la_SOURCES = chrpath.c killrpath.c elf.c protos.h
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+libchrpath32_la_CFLAGS = -DSIZEOF_VOID_P=4
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+libchrpath32_la_LDFLAGS = -avoid-version
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+libchrpath64_la_SOURCES = chrpath.c killrpath.c elf.c protos.h
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+libchrpath64_la_CFLAGS = -DSIZEOF_VOID_P=8
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+libchrpath64_la_LDFLAGS = -avoid-version
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EXTRA_DIST = $(man_MANS)
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--- chrpath-0.16/configure.ac 2014-01-12 09:01:52.000000000 +0100
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+++ chrpath-0.16-ng/configure.ac 2019-05-19 11:25:07.158665075 +0200
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@@ -16,6 +16,7 @@
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dnl Checks for programs.
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AC_PROG_CC
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AC_PROG_INSTALL
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+AC_PROG_LIBTOOL
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dnl Checks for libraries.
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@@ -26,11 +27,19 @@
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dnl Checks for typedefs, structures, and compiler characteristics.
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AC_C_CONST
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AC_C_BIGENDIAN
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-AC_CHECK_SIZEOF(void *)
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dnl Checks for library functions.
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AC_CHECK_FUNCS(getopt_long)
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+dnl See if we need -ldl on this platform for dlopen
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+LDLIBS=
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+save_LIBS="$LIBS"
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+LIBS=
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+AC_SEARCH_LIBS([dlopen], [dl])
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+LDLIBS=${LIBS}
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+LIBS="${save_LIBS}"
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+AC_SUBST([LDLIBS])
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+
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if eval "test x$GCC = xyes"; then
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for flag in \
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-W \
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--- chrpath-0.16/main.c 2014-01-14 10:15:59.000000000 +0100
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+++ chrpath-0.16-ng/main.c 2019-05-19 11:29:34.648390032 +0200
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@@ -12,13 +12,19 @@
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# include "config.h"
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#endif
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+#include <dlfcn.h>
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+#include <elf.h>
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+#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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+#include <string.h>
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#include <unistd.h>
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#ifdef HAVE_GETOPT_H
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#include <getopt.h>
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#endif
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-#include "protos.h"
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+
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+typedef int (*killrpath_t)(const char *filename);
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+typedef int (*chrpath_t)(const char *filename, const char *newpath, int convert);
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#ifdef HAVE_GETOPT_LONG
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# define GETOPT_LONG getopt_long
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@@ -63,6 +69,30 @@
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printf("\n");
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}
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+static unsigned
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+elf_class(const char *filename)
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+{
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+ Elf32_Ehdr ehdr;
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+ int fd;
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+
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+ fd = open(filename, O_RDONLY);
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+ if (fd == -1)
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+ return 0;
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+ if (read(fd, &ehdr, sizeof(ehdr)) != sizeof(ehdr))
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+ {
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+ close(fd);
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+ return 0;
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+ }
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+ close(fd);
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+ if ((memcmp(ehdr.e_ident, ELFMAG, SELFMAG) != 0)
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+ || (ehdr.e_ident[EI_VERSION] != EV_CURRENT))
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+ {
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+ fprintf(stderr, "`%s' probably isn't an ELF file.\n", filename);
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+ return 0;
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+ }
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+ return ehdr.e_ident[EI_CLASS];
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+}
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+
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int
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main(int argc, char * const argv[])
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{
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@@ -75,6 +105,10 @@
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#ifdef HAVE_GETOPT_LONG
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int option_index = 0;
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#endif /* HAVE_GETOPT_LONG */
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+
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+ void* dll[2];
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+ killrpath_t killrpath[2];
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+ chrpath_t chrpath[2];
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if (argc < 2)
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{
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@@ -118,15 +152,32 @@
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break;
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}
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} while (-1 != opt);
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+
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+ dll[0] = dlopen("libchrpath32.so", RTLD_LAZY);
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+ killrpath[0] = (killrpath_t)dlsym(dll[0], "killrpath");
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+ chrpath[0] = (chrpath_t)dlsym(dll[0], "chrpath");
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+
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+ dll[1] = dlopen("libchrpath64.so", RTLD_LAZY);
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+ killrpath[1] = (killrpath_t)dlsym(dll[1], "killrpath");
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+ chrpath[1] = (chrpath_t)dlsym(dll[1], "chrpath");
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while (optind < argc && (!retval || keep_going))
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{
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+ const char* program = argv[optind++];
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+ unsigned eclass = elf_class(program);
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+ if (!eclass)
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+ {
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+ retval = 1;
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+ continue;
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+ }
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if (remove)
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- retval |= killrpath(argv[optind++]);
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+ retval |= killrpath[eclass - ELFCLASS32](program);
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else
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/* list by default, replace if path is set */
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- retval |= chrpath(argv[optind++], newpath, convert);
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+ retval |= chrpath[eclass - ELFCLASS32](program, newpath, convert);
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}
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+ dlclose(dll[0]);
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+ dlclose(dll[1]);
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return retval;
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}
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