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ae2dc3f217
After5e86b005c0, I now think ANYARGS is dangerous and should be extinct. This commit uses rb_gvar_getter_t / rb_gvar_setter_t for rb_define_hooked_variable / rb_define_virtual_variable which revealed lots of function prototype inconsistencies. Some of them were literally decades old, going back todda5dc00cf.
127 lines
2.3 KiB
C
127 lines
2.3 KiB
C
/**********************************************************************
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safe.c -
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$Author$
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created at: Tue Sep 23 09:44:32 JST 2008
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Copyright (C) 2008 Yukihiro Matsumoto
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**********************************************************************/
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/* safe-level:
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0 - strings from streams/environment/ARGV are tainted (default)
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1 - no dangerous operation by tainted value
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*/
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#define SAFE_LEVEL_MAX RUBY_SAFE_LEVEL_MAX
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#include "ruby/ruby.h"
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#include "vm_core.h"
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/* $SAFE accessor */
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#undef rb_secure
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#undef rb_set_safe_level
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#undef ruby_safe_level_2_warning
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int
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ruby_safe_level_2_warning(void)
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{
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return 2;
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}
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int
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rb_safe_level(void)
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{
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return GET_VM()->safe_level_;
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}
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void
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rb_set_safe_level_force(int safe)
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{
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GET_VM()->safe_level_ = safe;
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}
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void
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rb_set_safe_level(int level)
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{
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rb_vm_t *vm = GET_VM();
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if (level > SAFE_LEVEL_MAX) {
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rb_raise(rb_eArgError, "$SAFE=2 to 4 are obsolete");
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}
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else if (level < 0) {
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rb_raise(rb_eArgError, "$SAFE should be >= 0");
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}
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else {
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int line;
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const char *path = rb_source_location_cstr(&line);
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if (0) fprintf(stderr, "%s:%d $SAFE %d -> %d\n",
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path ? path : "-", line, vm->safe_level_, level);
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vm->safe_level_ = level;
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}
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}
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static VALUE
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safe_getter(ID _x, VALUE *_y)
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{
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return INT2NUM(rb_safe_level());
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}
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static void
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safe_setter(VALUE val, ID _x, VALUE *_y)
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{
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int level = NUM2INT(val);
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rb_set_safe_level(level);
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}
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void
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rb_secure(int level)
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{
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if (level <= rb_safe_level()) {
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ID caller_name = rb_frame_callee();
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if (caller_name) {
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rb_raise(rb_eSecurityError, "Insecure operation `%"PRIsVALUE"' at level %d",
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rb_id2str(caller_name), rb_safe_level());
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}
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else {
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rb_raise(rb_eSecurityError, "Insecure operation at level %d",
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rb_safe_level());
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}
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}
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}
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void
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rb_secure_update(VALUE obj)
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{
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}
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void
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rb_insecure_operation(void)
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{
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ID caller_name = rb_frame_callee();
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if (caller_name) {
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rb_raise(rb_eSecurityError, "Insecure operation - %"PRIsVALUE,
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rb_id2str(caller_name));
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}
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else {
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rb_raise(rb_eSecurityError, "Insecure operation: -r");
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}
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}
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void
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rb_check_safe_obj(VALUE x)
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{
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if (rb_safe_level() > 0 && OBJ_TAINTED(x)) {
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rb_insecure_operation();
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}
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}
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void
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Init_safe(void)
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{
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rb_define_virtual_variable("$SAFE", safe_getter, safe_setter);
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}
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