Date: Tue, 14 May 2019 22:51:49 +0000 (UTC) From: Gordon Tetlow <gordon@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-releng@freebsd.org Subject: svn commit: r347585 - in releng: 11.2/usr.bin/xinstall 11.2/usr.bin/xinstall/tests 12.0/usr.bin/xinstall 12.0/usr.bin/xinstall/tests Message-ID: <201905142251.x4EMpnFf046783@repo.freebsd.org>
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Author: gordon Date: Tue May 14 22:51:49 2019 New Revision: 347585 URL: https://svnweb.freebsd.org/changeset/base/347585 Log: Fix partially matching relative paths in xinstall. Approved by: so Security: FreeBSD-EN-19:09.xinstall Modified: releng/11.2/usr.bin/xinstall/tests/install_test.sh releng/11.2/usr.bin/xinstall/xinstall.c releng/12.0/usr.bin/xinstall/tests/install_test.sh releng/12.0/usr.bin/xinstall/xinstall.c Modified: releng/11.2/usr.bin/xinstall/tests/install_test.sh ============================================================================== --- releng/11.2/usr.bin/xinstall/tests/install_test.sh Tue May 14 22:48:36 2019 (r347584) +++ releng/11.2/usr.bin/xinstall/tests/install_test.sh Tue May 14 22:51:49 2019 (r347585) @@ -377,6 +377,29 @@ mkdir_simple_body() { atf_check install -d dir1/dir2/dir3 } +atf_test_case symbolic_link_relative_absolute_common +symbolic_link_relative_absolute_common_head() { + atf_set "descr" "Verify -l rs with absolute paths having common components" +} +symbolic_link_relative_absolute_common_body() { + filename=foo.so + src_path=lib + src_path_prefixed=$PWD/$src_path + dest_path=$PWD/libexec/ + src_file=$src_path_prefixed/$filename + dest_file=$dest_path/$filename + + atf_check mkdir $src_path_prefixed $dest_path + atf_check touch $src_file + atf_check install -l sr $src_file $dest_path + + dest_path_relative=$(readlink $dest_file) + src_path_relative="../lib/$filename" + if [ "$src_path_relative" != "$dest_path_relative" ]; then + atf_fail "unexpected symlink contents ('$src_path_relative' != '$dest_path_relative')" + fi +} + atf_init_test_cases() { atf_add_test_case copy_to_nonexistent atf_add_test_case copy_to_nonexistent_safe @@ -415,5 +438,6 @@ atf_init_test_cases() { atf_add_test_case symbolic_link_relative_absolute_source_and_dest1 atf_add_test_case symbolic_link_relative_absolute_source_and_dest1_double_slash atf_add_test_case symbolic_link_relative_absolute_source_and_dest2 + atf_add_test_case symbolic_link_relative_absolute_common atf_add_test_case mkdir_simple } Modified: releng/11.2/usr.bin/xinstall/xinstall.c ============================================================================== --- releng/11.2/usr.bin/xinstall/xinstall.c Tue May 14 22:48:36 2019 (r347584) +++ releng/11.2/usr.bin/xinstall/xinstall.c Tue May 14 22:51:49 2019 (r347585) @@ -667,7 +667,7 @@ makelink(const char *from_name, const char *to_name, } if (dolink & LN_RELATIVE) { - char *to_name_copy, *cp, *d, *s; + char *to_name_copy, *cp, *d, *ld, *ls, *s; if (*from_name != '/') { /* this is already a relative link */ @@ -703,8 +703,19 @@ makelink(const char *from_name, const char *to_name, free(to_name_copy); /* Trim common path components. */ - for (s = src, d = dst; *s == *d; s++, d++) + ls = ld = NULL; + for (s = src, d = dst; *s == *d; ls = s, ld = d, s++, d++) continue; + /* + * If we didn't end after a directory separator, then we've + * falsely matched the last component. For example, if one + * invoked install -lrs /lib/foo.so /libexec/ then the source + * would terminate just after the separator while the + * destination would terminate in the middle of 'libexec', + * leading to a full directory getting falsely eaten. + */ + if ((ls != NULL && *ls != '/') || (ld != NULL && *ld != '/')) + s--, d--; while (*s != '/') s--, d--; Modified: releng/12.0/usr.bin/xinstall/tests/install_test.sh ============================================================================== --- releng/12.0/usr.bin/xinstall/tests/install_test.sh Tue May 14 22:48:36 2019 (r347584) +++ releng/12.0/usr.bin/xinstall/tests/install_test.sh Tue May 14 22:51:49 2019 (r347585) @@ -377,6 +377,29 @@ mkdir_simple_body() { atf_check install -d dir1/dir2/dir3 } +atf_test_case symbolic_link_relative_absolute_common +symbolic_link_relative_absolute_common_head() { + atf_set "descr" "Verify -l rs with absolute paths having common components" +} +symbolic_link_relative_absolute_common_body() { + filename=foo.so + src_path=lib + src_path_prefixed=$PWD/$src_path + dest_path=$PWD/libexec/ + src_file=$src_path_prefixed/$filename + dest_file=$dest_path/$filename + + atf_check mkdir $src_path_prefixed $dest_path + atf_check touch $src_file + atf_check install -l sr $src_file $dest_path + + dest_path_relative=$(readlink $dest_file) + src_path_relative="../lib/$filename" + if [ "$src_path_relative" != "$dest_path_relative" ]; then + atf_fail "unexpected symlink contents ('$src_path_relative' != '$dest_path_relative')" + fi +} + atf_init_test_cases() { atf_add_test_case copy_to_nonexistent atf_add_test_case copy_to_nonexistent_safe @@ -415,5 +438,6 @@ atf_init_test_cases() { atf_add_test_case symbolic_link_relative_absolute_source_and_dest1 atf_add_test_case symbolic_link_relative_absolute_source_and_dest1_double_slash atf_add_test_case symbolic_link_relative_absolute_source_and_dest2 + atf_add_test_case symbolic_link_relative_absolute_common atf_add_test_case mkdir_simple } Modified: releng/12.0/usr.bin/xinstall/xinstall.c ============================================================================== --- releng/12.0/usr.bin/xinstall/xinstall.c Tue May 14 22:48:36 2019 (r347584) +++ releng/12.0/usr.bin/xinstall/xinstall.c Tue May 14 22:51:49 2019 (r347585) @@ -673,7 +673,7 @@ makelink(const char *from_name, const char *to_name, } if (dolink & LN_RELATIVE) { - char *to_name_copy, *cp, *d, *s; + char *to_name_copy, *cp, *d, *ld, *ls, *s; if (*from_name != '/') { /* this is already a relative link */ @@ -709,8 +709,19 @@ makelink(const char *from_name, const char *to_name, free(to_name_copy); /* Trim common path components. */ - for (s = src, d = dst; *s == *d; s++, d++) + ls = ld = NULL; + for (s = src, d = dst; *s == *d; ls = s, ld = d, s++, d++) continue; + /* + * If we didn't end after a directory separator, then we've + * falsely matched the last component. For example, if one + * invoked install -lrs /lib/foo.so /libexec/ then the source + * would terminate just after the separator while the + * destination would terminate in the middle of 'libexec', + * leading to a full directory getting falsely eaten. + */ + if ((ls != NULL && *ls != '/') || (ld != NULL && *ld != '/')) + s--, d--; while (*s != '/') s--, d--;
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