{"id":46,"date":"2008-05-07T12:46:37","date_gmt":"2008-05-07T12:46:37","guid":{"rendered":"http:\/\/tw.newtonstudio.com\/?p=46"},"modified":"2008-05-07T13:27:46","modified_gmt":"2008-05-07T13:27:46","slug":"net-framework-%e7%82%ba%e8%87%aa%e5%b7%b1%e7%9a%84%e7%a8%8b%e5%bc%8f%e8%a8%ad%e5%ae%9asecurity-permission","status":"publish","type":"post","link":"http:\/\/tw.newtonstudio.com\/?p=46","title":{"rendered":".NET FRAMEWORK \u70ba\u81ea\u5df1\u7684\u7a0b\u5f0f\u8a2d\u5b9aSecurity Permission"},"content":{"rendered":"<p>\u70ba\u4e86\u907f\u514d\u4f7f\u7528\u8005\u53d6\u5f97\u4ed6\u5011\u4e0d\u61c9\u8a72\u5b58\u53d6\u7684\u8cc7\u6599,<\/p>\n<p>.NET FRAMEWORK\u63d0\u4f9b\u4e86\u5b89\u5168\u6027\u7684\u7269\u4ef6, \u9650\u5236\u4f7f\u7528\u8005\u7684\u5b58\u53d6\u6b0a\u9650.<br \/>\n\u9019\u8ddfWindows\u672c\u8eab\u7684\u5e33\u6236\u5b89\u5168\u6027\u6709\u4e9b\u4e0d\u540c, \u662f\u91dd\u5c0d\u7a0b\u5f0f\u800c\u8a00.<\/p>\n<p>SecurityAction \u5c6c\u6027\u6709\u4e09\u7a2e:<\/p>\n<ul>\n<li>RequestMinimum(M) \u6b63\u5e38\u57f7\u884c\u7684\u6700\u5c0f\u6b0a\u9650<\/li>\n<li>RequestOptional(O) \u53ef\u6709\u53ef\u7121\u7684\u6b0a\u9650<\/li>\n<li>RequestRefuse(R) \u7d55\u5c0d\u4e0d\u80fd\u6709\u7684\u6b0a\u9650<\/li>\n<\/ul>\n<p>*P\u00a0= Security Policy (\u4e5f\u5c31\u662fEnterprise, Machine, User\u4e09\u8005\u7684\u4ea4\u96c6)<\/p>\n<p>\u6700\u7d42\u6b0a\u9650\u7684\u6c7a\u5b9a\u653e\u7a0b\u5f0f\u70ba:\u00a0\u00a0(P \u4ea4 ((M\u00a0\u806f O) &#8211; R))<\/p>\n<p>\u4ee5\u4e0b\u7bc4\u4f8b\u986f\u793a:\u53ea\u5141\u8a31\u4f7f\u7528\u8005\u5b58\u53d6\u7279\u5b9a\u7684\u8cc7\u6599\u8868, \u5982\u679c\u4e0d\u662f\u6307\u5b9a\u7684\u8cc7\u6599\u8868, \u5c31\u7121\u6cd5\u57f7\u884c\u7a0b\u5f0f:<\/p>\n<p>\u6ce8: RequestOptional, Unrestricted\u61c9\u8a2d\u70baFalse, \u624d\u8868\u793a\u4e0d\u5141\u8a31\u7d66\u4e88\u5176\u4ed6\u7684\u6b0a\u9650; \u5982\u679c\u8a2d\u70baTrue, \u5247\u8868\u793a\u6c92\u6709\u9650\u5236, \u6240\u6709\u6b0a\u9650\u7684\u7d66\u4e86(\u5f88\u5371\u96aa, \u5bb9\u6613\u9020\u6210\u99ed\u5ba2\u7684\u5165\u4fb5).<\/p>\n<blockquote><p>Imports System.Security.Permissions<br \/>\nImports System.Data.SqlClient<\/p>\n<p>&lt;Assembly: UIPermission(SecurityAction.RequestMinimum, Window:=UIPermissionWindow.SafeTopLevelWindows)&gt;<br \/>\n&lt;Assembly: SqlClientPermission(SecurityAction.RequestMinimum, _<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 ConnectionString:=&#8221;server=.;database=pubs;integrated security=true&#8221;)&gt;<\/p>\n<p>&lt;Assembly: SecurityPermission(SecurityAction.RequestOptional, Unrestricted:=False)&gt;<\/p>\n<p>Public Class Form1<\/p>\n<p>\u00a0\u00a0\u00a0 Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Dim cn As New SqlConnection(TextBox1.Text)<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Try<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 cn.Open()<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 MessageBox.Show(&#8220;\u9023\u7dda\u6210\u529f&#8221;)<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Catch ex As Exception<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 MessageBox.Show(ex.Message)<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 End Try<br \/>\n\u00a0\u00a0\u00a0 End Sub<\/p>\n<p>End Class<\/p><\/blockquote>\n<p>\u65b9\u6cd5\u7684\u6b0a\u9650\u5b89\u5168\u7a2e\u985e:<\/p>\n<p>\u6709\u516d\u7a2eSecurityAction \u53ef\u7528\u518d\u5ba3\u544a\u5f0f\u6216\u547d\u4ee4\u5f0f\u5b89\u5168\u6027<\/p>\n<ul>\n<li>Assert<\/li>\n<li>Demand<\/li>\n<li>InheritanceDemand<\/li>\n<li>LinkDemand<\/li>\n<li>PermitOnly<\/li>\n<li>Deny<\/li>\n<\/ul>\n<blockquote><p>Imports System.Security.Permissions<br \/>\nImports System.IO<\/p>\n<p>Public Class Form1<\/p>\n<p>\u00a0\u00a0\u00a0 Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load<\/p>\n<p>\u00a0\u00a0\u00a0 End Sub<\/p>\n<p>\u00a0\u00a0\u00a0 &lt;FileIOPermission(SecurityAction.Demand)&gt; _<br \/>\n\u00a0\u00a0\u00a0 Sub CreateFile()<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Try<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 File.CreateText(&#8220;C:\\test\\b.txt&#8221;)<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 MessageBox.Show(&#8220;b.txt has been created&#8221;)<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Catch ex As Exception<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 MessageBox.Show(ex.Message)<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 End Try<br \/>\n\u00a0\u00a0\u00a0 End Sub<\/p>\n<p>\u00a0\u00a0\u00a0 &#8216;DENY\u8868\u793a\u4e0d\u5141\u8a31\u4f7f\u7528\u9019\u500bMETHOD<br \/>\n\u00a0\u00a0\u00a0 &lt;FileIOPermission(SecurityAction.Deny, Write:=&#8221;C:\\test&#8221;)&gt; _<br \/>\n\u00a0\u00a0\u00a0 Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 CreateFile()<br \/>\n\u00a0\u00a0\u00a0 End Sub<\/p>\n<p>\u00a0\u00a0\u00a0 &#8216;SecurityAction.Demand\u7684\u53e6\u4e00\u7a2e\u5beb\u6cd5<br \/>\n\u00a0\u00a0\u00a0 Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Dim fp As New FileIOPermission(FileIOPermissionAccess.Write, &#8220;C:\\test&#8221;)<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 fp.Demand()<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 CreateFile()<br \/>\n\u00a0\u00a0\u00a0 End Sub<br \/>\nEnd Class<\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>\u70ba\u4e86\u907f\u514d\u4f7f\u7528\u8005\u53d6\u5f97\u4ed6\u5011\u4e0d\u61c9\u8a72\u5b58\u53d6\u7684\u8cc7\u6599, .NET FRAMEWORK\u63d0\u4f9b\u4e86\u5b89\u5168\u6027\u7684\u7269\u4ef6, \u9650\u5236\u4f7f\u7528\u8005\u7684\u5b58\u53d6\u6b0a [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"class_list":["post-46","post","type-post","status-publish","format-standard","hentry","category-net-framework-aspx"],"_links":{"self":[{"href":"http:\/\/tw.newtonstudio.com\/index.php?rest_route=\/wp\/v2\/posts\/46","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/tw.newtonstudio.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/tw.newtonstudio.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/tw.newtonstudio.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/tw.newtonstudio.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=46"}],"version-history":[{"count":0,"href":"http:\/\/tw.newtonstudio.com\/index.php?rest_route=\/wp\/v2\/posts\/46\/revisions"}],"wp:attachment":[{"href":"http:\/\/tw.newtonstudio.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=46"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/tw.newtonstudio.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=46"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/tw.newtonstudio.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=46"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}