Mercurial > hg > truffle
annotate agent/src/os/win32/serverLists.hpp @ 3862:52e4ba46751f
7020373: JSR rewriting can overflow memory address size variables
Summary: Abort if incoming classfile's parameters would cause overflows
Reviewed-by: coleenp, dcubed, never
author | kamg |
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date | Tue, 12 Apr 2011 16:42:26 -0400 |
parents | c18cbe5936b8 |
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rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2000, 2003, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
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7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 #ifndef _SERVER_LISTS_ | |
26 #define _SERVER_LISTS_ | |
27 | |
28 #include <vector> | |
29 #include <winsock2.h> | |
30 #include "IOBuf.hpp" | |
31 | |
32 // | |
33 // NOTE: | |
34 // | |
35 // All of these lists are guarded by the global lock managed by the | |
36 // Lists class. Lists::init() must be called at the start of the | |
37 // program. | |
38 // | |
39 | |
40 class Lists { | |
41 friend class ListsLocker; | |
42 public: | |
43 static void init(); | |
44 private: | |
45 static void lock(); | |
46 static void unlock(); | |
47 static CRITICAL_SECTION crit; | |
48 }; | |
49 | |
50 // Should be allocated on stack. Ensures proper locking/unlocking | |
51 // pairing. | |
52 class ListsLocker { | |
53 public: | |
54 ListsLocker(); | |
55 ~ListsLocker(); | |
56 }; | |
57 | |
58 // We must keep track of all of the child processes we have forked to | |
59 // handle attaching to a target process. This is necessary because we | |
60 // allow clients to detach from processes, but the child processes we | |
61 // fork must necessarily stay alive for the duration of the target | |
62 // application. A subsequent attach operation to the target process | |
63 // results in the same child process being reused. For this reason, | |
64 // child processes are known to be in one of two states: attached and | |
65 // detached. | |
66 | |
67 class ClientInfo; | |
68 | |
69 class ChildInfo { | |
70 public: | |
71 /** The pid of the ChildInfo indicates the process ID of the target | |
72 process which the subprocess was created to debug, not the pid | |
73 of the subprocess itself. */ | |
74 ChildInfo(DWORD pid, HANDLE childProcessHandle, | |
75 HANDLE writeToStdinHandle, HANDLE readFromStdoutHandle, | |
76 HANDLE auxHandle1, HANDLE auxHandle2); | |
77 | |
78 DWORD getPid(); | |
79 HANDLE getChildProcessHandle(); | |
80 HANDLE getWriteToStdinHandle(); | |
81 HANDLE getReadFromStdoutHandle(); | |
82 | |
83 /** Set the client which is currently attached to the target process | |
84 via this child process. Set this to NULL to indicate that the | |
85 child process is ready to accept another attachment. */ | |
86 void setClient(ClientInfo* clientInfo); | |
87 | |
88 ClientInfo* getClient(); | |
89 | |
90 /** This is NOT automatically called in the destructor */ | |
91 void closeAll(); | |
92 | |
93 private: | |
94 DWORD pid; | |
95 HANDLE childProcessHandle; | |
96 HANDLE writeToStdinHandle; | |
97 HANDLE readFromStdoutHandle; | |
98 HANDLE auxHandle1; | |
99 HANDLE auxHandle2; | |
100 ClientInfo* client; | |
101 }; | |
102 | |
103 // We keep track of a list of child debugger processes, each of which | |
104 // is responsible for debugging a certain target process. These | |
105 // debugger processes can serve multiple clients during their | |
106 // lifetime. When a client detaches from a given process or tells the | |
107 // debugger to "exit", the debug server is notified that the child | |
108 // process is once again available to accept connections from clients. | |
109 | |
110 class ChildList { | |
111 private: | |
112 typedef std::vector<ChildInfo*> ChildInfoList; | |
113 | |
114 public: | |
115 ChildList(); | |
116 ~ChildList(); | |
117 | |
118 void addChild(ChildInfo*); | |
119 | |
120 /** Removes and returns the ChildInfo* associated with the given | |
121 child process handle. */ | |
122 ChildInfo* removeChild(HANDLE childProcessHandle); | |
123 | |
124 /** Removes the given ChildInfo. */ | |
125 void removeChild(ChildInfo* info); | |
126 | |
127 /** Return the ChildInfo* associated with a given process ID without | |
128 removing it from the list. */ | |
129 ChildInfo* getChildByPid(DWORD pid); | |
130 | |
131 /** Iteration support */ | |
132 int size(); | |
133 | |
134 /** Iteration support */ | |
135 ChildInfo* getChildByIndex(int index); | |
136 | |
137 private: | |
138 ChildInfoList childList; | |
139 }; | |
140 | |
141 // We also keep a list of clients whose requests we are responsible | |
142 // for serving. Clients can attach and detach from child processes. | |
143 | |
144 class ClientInfo { | |
145 public: | |
146 ClientInfo(SOCKET dataSocket); | |
147 ~ClientInfo(); | |
148 | |
149 SOCKET getDataSocket(); | |
150 /** Gets an IOBuf configured for the data socket, which should be | |
151 used for all communication with the client. */ | |
152 IOBuf* getIOBuf(); | |
153 | |
154 /** Set the information for the process to which this client is | |
155 attached. Set this to NULL to indicate that the client is not | |
156 currently attached to any target process. */ | |
157 void setTarget(ChildInfo* childInfo); | |
158 | |
159 /** Get the information for the process to which this client is | |
160 currently attached, or NULL if none. */ | |
161 ChildInfo* getTarget(); | |
162 | |
163 /** Close down the socket connection to this client. This is NOT | |
164 automatically called by the destructor. */ | |
165 void closeAll(); | |
166 | |
167 private: | |
168 SOCKET dataSocket; | |
169 IOBuf* buf; | |
170 ChildInfo* target; | |
171 }; | |
172 | |
173 class ClientList { | |
174 private: | |
175 typedef std::vector<ClientInfo*> ClientInfoList; | |
176 | |
177 public: | |
178 ClientList(); | |
179 ~ClientList(); | |
180 | |
181 /** Adds a client to the list. */ | |
182 void addClient(ClientInfo* info); | |
183 | |
184 /** Check to see whether the parent socket of any of the ClientInfo | |
185 objects is readable in the given fd_set. If so, returns TRUE and | |
186 sets the given ClientInfo* (a non-NULL pointer to which must be | |
187 given) appropriately. */ | |
188 bool isAnyDataSocketSet(fd_set* fds, ClientInfo** info); | |
189 | |
190 /** Removes a client from the list. User is responsible for deleting | |
191 the ClientInfo* using operator delete. */ | |
192 void removeClient(ClientInfo* client); | |
193 | |
194 /** Iteration support. */ | |
195 int size(); | |
196 | |
197 /** Iteration support. */ | |
198 ClientInfo* get(int num); | |
199 | |
200 private: | |
201 ClientInfoList clientList; | |
202 }; | |
203 | |
204 #endif // #defined _SERVER_LISTS_ |