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io.c: opening external command

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* io.c (rb_io_open_generic): when external command will be invoked
  as other than IO singleton method, probably unintentionally,
  warn if it is File or raise ArgumentError.

From: Nobuyoshi Nakada <nobu@ruby-lang.org>

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61317 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2017-12-18 04:32:54 +00:00
parent 570642bf15
commit 2ad35b31bb
2 changed files with 35 additions and 15 deletions
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41
io.c
View file

@ -7069,10 +7069,10 @@ rb_f_open(int argc, VALUE *argv)
return rb_io_s_open(argc, argv, rb_cFile);
}
static VALUE rb_io_open_generic(VALUE, int, int, const convconfig_t *, mode_t);
static VALUE rb_io_open_generic(VALUE, VALUE, int, int, const convconfig_t *, mode_t);
static VALUE
rb_io_open(VALUE filename, VALUE vmode, VALUE vperm, VALUE opt)
rb_io_open(VALUE io, VALUE filename, VALUE vmode, VALUE vperm, VALUE opt)
{
int oflags, fmode;
convconfig_t convconfig;
@ -7080,19 +7080,30 @@ rb_io_open(VALUE filename, VALUE vmode, VALUE vperm, VALUE opt)
rb_io_extract_modeenc(&vmode, &vperm, opt, &oflags, &fmode, &convconfig);
perm = NIL_P(vperm) ? 0666 : NUM2MODET(vperm);
return rb_io_open_generic(filename, oflags, fmode, &convconfig, perm);
return rb_io_open_generic(io, filename, oflags, fmode, &convconfig, perm);
}
static VALUE
rb_io_open_generic(VALUE filename, int oflags, int fmode,
rb_io_open_generic(VALUE klass, VALUE filename, int oflags, int fmode,
const convconfig_t *convconfig, mode_t perm)
{
VALUE cmd;
if (!NIL_P(cmd = check_pipe_command(filename))) {
if (klass != rb_cIO) {
ID func = rb_frame_this_func();
VALUE fname = rb_id2str(func);
static const char MSG[] = "IO.%"PRIsVALUE" called on %"PRIsVALUE" to invoke external command";
if (klass == rb_cFile) {
rb_warn(MSG, fname, klass);
}
else {
rb_raise(rb_eArgError, MSG, fname, klass);
}
}
return pipe_open_s(cmd, rb_io_oflags_modestr(oflags), fmode, convconfig);
}
else {
return rb_file_open_generic(io_alloc(rb_cFile), filename,
return rb_file_open_generic(io_alloc(klass), filename,
oflags, fmode, convconfig, perm);
}
}
@ -10155,7 +10166,7 @@ struct foreach_arg {
};
static void
open_key_args(int argc, VALUE *argv, VALUE opt, struct foreach_arg *arg)
open_key_args(VALUE klass, int argc, VALUE *argv, VALUE opt, struct foreach_arg *arg)
{
VALUE path, v;
VALUE vmode = Qnil, vperm = Qnil;
@ -10178,7 +10189,7 @@ open_key_args(int argc, VALUE *argv, VALUE opt, struct foreach_arg *arg)
rb_check_arity(n, 0, 3); /* rb_io_open */
rb_scan_args(n, RARRAY_CONST_PTR(v), "02:", &vmode, &vperm, &opt);
}
arg->io = rb_io_open(path, vmode, vperm, opt);
arg->io = rb_io_open(klass, path, vmode, vperm, opt);
}
static VALUE
@ -10232,7 +10243,7 @@ rb_io_s_foreach(int argc, VALUE *argv, VALUE self)
argc = rb_scan_args(argc, argv, "13:", NULL, NULL, NULL, NULL, &opt);
RETURN_ENUMERATOR(self, orig_argc, argv);
extract_getline_args(argc-1, argv+1, &garg);
open_key_args(argc, argv, opt, &arg);
open_key_args(self, argc, argv, opt, &arg);
if (NIL_P(arg.io)) return Qnil;
extract_getline_opts(opt, &garg);
check_getline_args(&garg.rs, &garg.limit, garg.io = arg.io);
@ -10284,7 +10295,7 @@ rb_io_s_readlines(int argc, VALUE *argv, VALUE io)
argc = rb_scan_args(argc, argv, "13:", NULL, NULL, NULL, NULL, &opt);
extract_getline_args(argc-1, argv+1, &garg);
open_key_args(argc, argv, opt, &arg);
open_key_args(io, argc, argv, opt, &arg);
if (NIL_P(arg.io)) return Qnil;
extract_getline_opts(opt, &garg);
check_getline_args(&garg.rs, &garg.limit, garg.io = arg.io);
@ -10360,7 +10371,7 @@ rb_io_s_read(int argc, VALUE *argv, VALUE io)
struct foreach_arg arg;
argc = rb_scan_args(argc, argv, "13:", NULL, NULL, &offset, NULL, &opt);
open_key_args(argc, argv, opt, &arg);
open_key_args(io, argc, argv, opt, &arg);
if (NIL_P(arg.io)) return Qnil;
if (!NIL_P(offset)) {
struct seek_arg sarg;
@ -10409,7 +10420,7 @@ rb_io_s_binread(int argc, VALUE *argv, VALUE io)
rb_scan_args(argc, argv, "12", NULL, NULL, &offset);
FilePathValue(argv[0]);
convconfig.enc = rb_ascii8bit_encoding();
arg.io = rb_io_open_generic(argv[0], oflags, fmode, &convconfig, 0);
arg.io = rb_file_open_generic(io_alloc(io), argv[0], oflags, fmode, &convconfig, 0);
if (NIL_P(arg.io)) return Qnil;
arg.argv = argv+1;
arg.argc = (argc > 1) ? 1 : 0;
@ -10435,7 +10446,7 @@ io_s_write0(struct write_arg *arg)
}
static VALUE
io_s_write(int argc, VALUE *argv, int binary)
io_s_write(int argc, VALUE *argv, VALUE klass, int binary)
{
VALUE string, offset, opt;
struct foreach_arg arg;
@ -10455,7 +10466,7 @@ io_s_write(int argc, VALUE *argv, int binary)
if (NIL_P(offset)) mode |= O_TRUNC;
rb_hash_aset(opt,sym_mode,INT2NUM(mode));
}
open_key_args(argc,argv,opt,&arg);
open_key_args(klass, argc, argv, opt, &arg);
#ifndef O_BINARY
if (binary) rb_io_binmode_m(arg.io);
@ -10529,7 +10540,7 @@ io_s_write(int argc, VALUE *argv, int binary)
static VALUE
rb_io_s_write(int argc, VALUE *argv, VALUE io)
{
return io_s_write(argc, argv, 0);
return io_s_write(argc, argv, io, 0);
}
/*
@ -10544,7 +10555,7 @@ rb_io_s_write(int argc, VALUE *argv, VALUE io)
static VALUE
rb_io_s_binwrite(int argc, VALUE *argv, VALUE io)
{
return io_s_write(argc, argv, 1);
return io_s_write(argc, argv, io, 1);
}
struct copy_stream_struct {

9
test/ruby/test_io.rb
View file

@ -2184,6 +2184,15 @@ class TestIO < Test::Unit::TestCase
end
end
def test_read_command
assert_warn(/invoke external command/) do
File.read("|#{EnvUtil.rubybin} -e puts")
end
assert_raise_with_message(ArgumentError, /invoke external command/) do
Class.new(IO).read("|#{EnvUtil.rubybin} -e puts")
end
end
def test_reopen
make_tempfile {|t|
open(__FILE__) do |f|