mirror of
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8ee7d0767f
eval_intern.h, eval_jump.h, eval_load.c, eval_method.h, eval_safe.h, gc.c, insnhelper.h, insns.def, iseq.c, proc.c, process.c, signal.c, thread.c, thread_pthread.ci, thread_win32.ci, vm.c, vm.h, vm_dump.c, vm_evalbody.ci, vm_macro.def, yarv.h, yarvcore.h, yarvcore.c: change type and macro names: * yarv_*_t -> rb_*_t * yarv_*_struct -> rb_*_struct * yarv_tag -> rb_vm_tag * YARV_* -> RUBY_VM_* * proc.c, vm.c: move functions about env object creation from proc.c to vm.c. * proc.c, yarvcore.c: fix rb_cVM initialization place. * inits.c: change Init_ISeq() order (after Init_VM). * ruby.h, proc.c: change declaration place of rb_cEnv from proc.c to ruby.c. git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@11651 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
117 lines
2.3 KiB
C
117 lines
2.3 KiB
C
/*
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* This file is included by eval.c
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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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2 - process/file operations prohibited
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3 - all generated objects are tainted
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4 - no global (non-tainted) variable modification/no direct output
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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_THREAD()->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_THREAD()->safe_level = safe;
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}
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static VALUE safe_getter _((void));
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static void safe_setter _((VALUE val));
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#define PROC_TSHIFT (FL_USHIFT+1)
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#define PROC_TMASK (FL_USER1|FL_USER2|FL_USER3)
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#define PROC_TMAX (PROC_TMASK >> PROC_TSHIFT)
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#define PROC_NOSAFE FL_USER4
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#define SAFE_LEVEL_MAX PROC_TMASK
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/* $SAFE accessor */
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void
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rb_set_safe_level(int level)
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{
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rb_thead_t *th = GET_THREAD();
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if (level > th->safe_level) {
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if (level > SAFE_LEVEL_MAX) {
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level = SAFE_LEVEL_MAX;
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}
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th->safe_level = level;
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}
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}
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static VALUE
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safe_getter(void)
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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)
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{
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int level = NUM2INT(val);
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rb_thead_t *th = GET_THREAD();
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if (level < th->safe_level) {
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rb_raise(rb_eSecurityError,
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"tried to downgrade safe level from %d to %d",
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th->safe_level, level);
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}
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if (level > SAFE_LEVEL_MAX) {
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level = SAFE_LEVEL_MAX;
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}
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th->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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if (rb_frame_callee()) {
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rb_raise(rb_eSecurityError, "Insecure operation `%s' at level %d",
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rb_id2name(rb_frame_callee()), 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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if (!OBJ_TAINTED(obj))
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rb_secure(4);
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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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if (rb_frame_callee()) {
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rb_raise(rb_eSecurityError, "Insecure operation - %s",
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rb_id2name(rb_frame_callee()));
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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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rb_secure(4);
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}
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void
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rb_check_safe_str(VALUE x)
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{
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rb_check_safe_obj(x);
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if (TYPE(x) != T_STRING) {
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rb_raise(rb_eTypeError, "wrong argument type %s (expected String)",
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rb_obj_classname(x));
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}
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}
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