programs/taskmgr/dbgchnl.c

   1 /*
   2  *  ReactOS Task Manager
   3  *
   4  *  dbgchnl.c
   5  *
   6  *  Copyright (C) 2003 - 2004 Eric Pouech
   7  *  Copyright (C) 2008  Vladimir Pankratov
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  22  */
  23
  24 #include <ctype.h>
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27
  28 #include <windows.h>
  29 #include <commctrl.h>
  30 #include <winnt.h>
  31 #include <dbghelp.h>
  32
  33 #include "taskmgr.h"
  34 #include "perfdata.h"
  35 #include "column.h"
  36 #include "wine/debug.h"
  37
  38 /* TODO:
  39  *      - the dialog box could be non modal
  40  *      - in that case,
  41  *              + could refresh channels from time to time
  42  *              + set the name of exec (and perhaps its pid) in dialog title
  43  *      - get a better UI (replace the 'x' by real tick boxes in list view)
  44  *      - enhance visual feedback: the list is large, and it's hard to get the
  45  *        right line when clicking on rightmost column (trace for example)
  46  *      - get rid of printfs (error reporting) and use real message boxes
  47  *      - include the column width settings in the full column management scheme
  48  *      - use more global settings (like having a temporary on/off
  49  *        setting for a fixme:s or err:s
  50  */
  51
  52 static DWORD (WINAPI *pSymSetOptions)(DWORD);
  53 static BOOL  (WINAPI *pSymInitialize)(HANDLE, PSTR, BOOL);
  54 static DWORD (WINAPI *pSymLoadModule)(HANDLE, HANDLE, PCSTR, PCSTR, DWORD, DWORD);
  55 static BOOL  (WINAPI *pSymCleanup)(HANDLE);
  56 static BOOL  (WINAPI *pSymFromName)(HANDLE, PCSTR, PSYMBOL_INFO);
  57
  58 BOOL AreDebugChannelsSupported(void)
  59 {
  60     static HANDLE   hDbgHelp /* = NULL */;
  61
  62     static const WCHAR    wszDbgHelp[] = {'D','B','G','H','E','L','P','.','D','L','L',0};
  63
  64     if (hDbgHelp) return TRUE;
  65
  66     if (!(hDbgHelp = LoadLibraryW(wszDbgHelp))) return FALSE;
  67     pSymSetOptions = (void*)GetProcAddress(hDbgHelp, "SymSetOptions");
  68     pSymInitialize = (void*)GetProcAddress(hDbgHelp, "SymInitialize");
  69     pSymLoadModule = (void*)GetProcAddress(hDbgHelp, "SymLoadModule");
  70     pSymFromName   = (void*)GetProcAddress(hDbgHelp, "SymFromName");
  71     pSymCleanup    = (void*)GetProcAddress(hDbgHelp, "SymCleanup");
  72     if (!pSymSetOptions || !pSymInitialize || !pSymLoadModule || !pSymCleanup || !pSymFromName)
  73     {
  74         FreeLibrary(hDbgHelp);
  75         hDbgHelp = NULL;
  76         return FALSE;
  77     }
  78     return TRUE;
  79 }
  80
  81 static DWORD    get_selected_pid(void)
  82 {
  83     LVITEMW     lvitem;
  84     ULONG       Index, Count;
  85     DWORD       dwProcessId;
  86
  87     Count = SendMessageW(hProcessPageListCtrl, LVM_GETITEMCOUNT, 0, 0);
  88     for (Index = 0; Index < Count; Index++)
  89     {
  90         lvitem.mask = LVIF_STATE;
  91         lvitem.stateMask = LVIS_SELECTED;
  92         lvitem.iItem = Index;
  93         lvitem.iSubItem = 0;
  94
  95         SendMessageW(hProcessPageListCtrl, LVM_GETITEMW, 0, (LPARAM) &lvitem);
  96
  97         if (lvitem.state & LVIS_SELECTED)
  98             break;
  99     }
 100
 101     Count = SendMessageW(hProcessPageListCtrl, LVM_GETSELECTEDCOUNT, 0, 0);
 102     dwProcessId = PerfDataGetProcessId(Index);
 103     if ((Count != 1) || (dwProcessId == 0))
 104         return 0;
 105     return dwProcessId;
 106 }
 107
 108 static int     list_channel_CB(HANDLE hProcess, void* addr, struct __wine_debug_channel* channel, void* user)
 109 {
 110     int         j;
 111     WCHAR       nameW[sizeof(channel->name)], val[2];
 112     LVITEMW     lvitem;
 113     int         index;
 114     HWND        hChannelLV = user;
 115
 116     MultiByteToWideChar(CP_ACP, 0, channel->name, sizeof(channel->name), nameW, sizeof(nameW)/sizeof(WCHAR));
 117
 118     lvitem.mask = LVIF_TEXT;
 119     lvitem.pszText = nameW;
 120     lvitem.iItem = 0;
 121     lvitem.iSubItem = 0;
 122
 123     index = ListView_InsertItemW(hChannelLV, &lvitem);
 124     if (index == -1) return 0;
 125
 126     val[1] = '\0';
 127     for (j = 0; j < 4; j++)
 128     {
 129         val[0] = (channel->flags & (1 << j)) ? 'x' : ' ';
 130         ListView_SetItemTextW(hChannelLV, index, j + 1, val);
 131     }
 132     return 1;
 133 }
 134
 135 struct cce_user
 136 {
 137     const char* name;           /* channel to look for */
 138     unsigned    value, mask;    /* how to change channel */
 139     unsigned    done;           /* number of successful changes */
 140     unsigned    notdone;        /* number of unsuccessful changes */
 141 };
 142
 143 /******************************************************************
 144  *              change_channel_CB
 145  *
 146  * Callback used for changing a given channel attributes
 147  */
 148 static int change_channel_CB(HANDLE hProcess, void* addr, struct __wine_debug_channel *channel, void* pmt)
 149 {
 150     struct cce_user* user = (struct cce_user*)pmt;
 151
 152     if (!user->name || !strcmp(channel->name, user->name))
 153     {
 154         channel->flags = (channel->flags & ~user->mask) | (user->value & user->mask);
 155         if (WriteProcessMemory(hProcess, addr, channel, sizeof(*channel), NULL))
 156             user->done++;
 157         else
 158             user->notdone++;
 159     }
 160     return 1;
 161 }
 162
 163 static void* get_symbol(HANDLE hProcess, const char* name)
 164 {
 165     char                buffer[sizeof(IMAGEHLP_SYMBOL) + 256];
 166     SYMBOL_INFO*        si = (SYMBOL_INFO*)buffer;
 167     void*               ret = NULL;
 168
 169     /* also ask for wine extensions (loading symbols from ELF files) */
 170     pSymSetOptions(SYMOPT_DEFERRED_LOADS | SYMOPT_PUBLICS_ONLY | 0x40000000);
 171     /* FIXME: the TRUE option is due to the fact that dbghelp requires it
 172      * when loading an ELF module
 173      */
 174     if (pSymInitialize(hProcess, NULL, TRUE))
 175     {
 176         si->SizeOfStruct = sizeof(*si);
 177         si->MaxNameLen = sizeof(buffer) - sizeof(IMAGEHLP_SYMBOL);
 178         if (pSymFromName(hProcess, name, si))
 179             ret = (void*)(ULONG_PTR)si->Address;
 180         pSymCleanup(hProcess);
 181     }
 182     return ret;
 183 }
 184
 185 typedef int (*EnumChannelCB)(HANDLE, void*, struct __wine_debug_channel*, void*);
 186
 187 /******************************************************************
 188  *              enum_channel
 189  *
 190  * Enumerates all known channels on process hProcess through callback
 191  * ce.
 192  */
 193 static int enum_channel(HANDLE hProcess, EnumChannelCB ce, void* user)
 194 {
 195     struct __wine_debug_channel channel;
 196     int                         ret = 1;
 197     void*                       addr;
 198
 199     if (!(addr = get_symbol(hProcess, "libwine.so.1!debug_options"))) return -1;
 200
 201     while (ret && addr && ReadProcessMemory(hProcess, addr, &channel, sizeof(channel), NULL))
 202     {
 203         if (!channel.name[0]) break;
 204         ret = ce(hProcess, addr, &channel, user);
 205         addr = (struct __wine_debug_channel *)addr + 1;
 206     }
 207     return 0;
 208 }
 209
 210 static void DebugChannels_FillList(HWND hChannelLV)
 211 {
 212     HANDLE      hProcess;
 213
 214     SendMessageW(hChannelLV, LVM_DELETEALLITEMS, 0, 0);
 215
 216     hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_OPERATION | PROCESS_VM_READ, FALSE, get_selected_pid());
 217     if (!hProcess) return; /* FIXME messagebox */
 218     SendMessageW(hChannelLV, WM_SETREDRAW, FALSE, 0);
 219     enum_channel(hProcess, list_channel_CB, (void*)hChannelLV);
 220     SendMessageW(hChannelLV, WM_SETREDRAW, TRUE, 0);
 221     CloseHandle(hProcess);
 222 }
 223
 224 static void DebugChannels_OnCreate(HWND hwndDlg)
 225 {
 226     static WCHAR fixmeW[] = {'F','i','x','m','e','\0'};
 227     static WCHAR errW[]   = {'E','r','r','\0'};
 228     static WCHAR warnW[]  = {'W','a','r','n','\0'};
 229     static WCHAR traceW[] = {'T','r','a','c','e','\0'};
 230     HWND        hLV = GetDlgItem(hwndDlg, IDC_DEBUG_CHANNELS_LIST);
 231     LVCOLUMNW   lvc;
 232     WCHAR debug_channelW[255];
 233
 234     LoadStringW(hInst, IDS_DEBUG_CHANNEL, debug_channelW, sizeof(debug_channelW)/sizeof(WCHAR));
 235
 236     lvc.mask = LVCF_FMT | LVCF_TEXT | LVCF_WIDTH;
 237     lvc.fmt = LVCFMT_LEFT;
 238     lvc.pszText = debug_channelW;
 239     lvc.cx = 100;
 240     SendMessageW(hLV, LVM_INSERTCOLUMNW, 0, (LPARAM) &lvc);
 241
 242     lvc.mask = LVCF_FMT | LVCF_TEXT | LVCF_WIDTH;
 243     lvc.fmt = LVCFMT_CENTER;
 244     lvc.pszText = fixmeW;
 245     lvc.cx = 55;
 246     SendMessageW(hLV, LVM_INSERTCOLUMNW, 1, (LPARAM) &lvc);
 247
 248     lvc.mask = LVCF_FMT | LVCF_TEXT | LVCF_WIDTH;
 249     lvc.fmt = LVCFMT_CENTER;
 250     lvc.pszText = errW;
 251     lvc.cx = 55;
 252     SendMessageW(hLV, LVM_INSERTCOLUMNW, 2, (LPARAM) &lvc);
 253
 254     lvc.mask = LVCF_FMT | LVCF_TEXT | LVCF_WIDTH;
 255     lvc.fmt = LVCFMT_CENTER;
 256     lvc.pszText = warnW;
 257     lvc.cx = 55;
 258     SendMessageW(hLV, LVM_INSERTCOLUMNW, 3, (LPARAM) &lvc);
 259
 260     lvc.mask = LVCF_FMT | LVCF_TEXT | LVCF_WIDTH;
 261     lvc.fmt = LVCFMT_CENTER;
 262     lvc.pszText = traceW;
 263     lvc.cx = 55;
 264     SendMessageW(hLV, LVM_INSERTCOLUMNW, 4, (LPARAM) &lvc);
 265
 266     DebugChannels_FillList(hLV);
 267 }
 268
 269 static void DebugChannels_OnNotify(HWND hDlg, LPARAM lParam)
 270 {
 271     NMHDR*      nmh = (NMHDR*)lParam;
 272
 273     switch (nmh->code)
 274     {
 275     case NM_CLICK:
 276         if (nmh->idFrom == IDC_DEBUG_CHANNELS_LIST)
 277         {
 278             LVHITTESTINFO       lhti;
 279             HWND                hChannelLV;
 280             HANDLE              hProcess;
 281             NMITEMACTIVATE*     nmia = (NMITEMACTIVATE*)lParam;
 282
 283             hProcess = OpenProcess(PROCESS_VM_OPERATION | PROCESS_VM_READ | PROCESS_VM_WRITE, FALSE, get_selected_pid());
 284             if (!hProcess) return; /* FIXME message box */
 285             lhti.pt = nmia->ptAction;
 286             hChannelLV = GetDlgItem(hDlg, IDC_DEBUG_CHANNELS_LIST);
 287             SendMessageW(hChannelLV, LVM_SUBITEMHITTEST, 0, (LPARAM)&lhti);
 288             if (nmia->iSubItem >= 1 && nmia->iSubItem <= 4)
 289             {
 290                 WCHAR           val[2];
 291                 char            name[32];
 292                 unsigned        bitmask = 1 << (lhti.iSubItem - 1);
 293                 struct cce_user user;
 294
 295                 ListView_GetItemTextA(hChannelLV, lhti.iItem, 0, name, sizeof(name) / sizeof(name[0]));
 296                 ListView_GetItemTextW(hChannelLV, lhti.iItem, lhti.iSubItem, val, sizeof(val) / sizeof(val[0]));
 297                 user.name = name;
 298                 user.value = (val[0] == 'x') ? 0 : bitmask;
 299                 user.mask = bitmask;
 300                 user.done = user.notdone = 0;
 301                 enum_channel(hProcess, change_channel_CB, &user);
 302                 if (user.done)
 303                 {
 304                     val[0] ^= ('x' ^ ' ');
 305                     ListView_SetItemTextW(hChannelLV, lhti.iItem, lhti.iSubItem, val);
 306                 }
 307                 if (user.notdone)
 308                     printf("Some channel instances weren't correctly set\n");
 309             }
 310             CloseHandle(hProcess);
 311         }
 312         break;
 313     }
 314 }
 315
 316 static INT_PTR CALLBACK DebugChannelsDlgProc(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
 317 {
 318     switch (message)
 319     {
 320     case WM_INITDIALOG:
 321         DebugChannels_OnCreate(hDlg);
 322         return TRUE;
 323     case WM_COMMAND:
 324         if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL)
 325         {
 326             EndDialog(hDlg, LOWORD(wParam));
 327             return TRUE;
 328         }
 329         break;
 330     case WM_NOTIFY:
 331         DebugChannels_OnNotify(hDlg, lParam);
 332         break;
 333     }
 334     return FALSE;
 335 }
 336
 337 void ProcessPage_OnDebugChannels(void)
 338 {
 339     DialogBoxW(hInst, (LPCWSTR)IDD_DEBUG_CHANNELS_DIALOG, hMainWnd, DebugChannelsDlgProc);
 340 }