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 #define WIN32_LEAN_AND_MEAN    /* Exclude rarely-used stuff from Windows headers */
  25 #include <windows.h>
  26 #include <ctype.h>
  27 #include <commctrl.h>
  28 #include <stdlib.h>
  29 #include <memory.h>
  30 #include <stdio.h>
  31 #include <winnt.h>
  32 #include <dbghelp.h>
  33
  34 #include "taskmgr.h"
  35 #include "perfdata.h"
  36 #include "column.h"
  37 #include "wine/debug.h"
  38
  39 /* TODO:
  40  *      - the dialog box could be non modal
  41  *      - in that case,
  42  *              + could refresh channels from time to time
  43  *              + set the name of exec (and perhaps its pid) in dialog title
  44  *      - get a better UI (replace the 'x' by real tick boxes in list view)
  45  *      - enhance visual feedback: the list is large, and it's hard to get the
  46  *        right line when clicking on rightmost column (trace for example)
  47  *      - get rid of printfs (error reporting) and use real message boxes
  48  *      - include the column width settings in the full column management scheme
  49  *      - use more global settings (like having a temporary on/off
  50  *        setting for a fixme:s or err:s
  51  */
  52
  53 static DWORD (WINAPI *pSymSetOptions)(DWORD);
  54 static BOOL  (WINAPI *pSymInitialize)(HANDLE, PSTR, BOOL);
  55 static DWORD (WINAPI *pSymLoadModule)(HANDLE, HANDLE, PCSTR, PCSTR, DWORD, DWORD);
  56 static BOOL  (WINAPI *pSymCleanup)(HANDLE);
  57 static BOOL  (WINAPI *pSymFromName)(HANDLE, PCSTR, PSYMBOL_INFO);
  58
  59 BOOL AreDebugChannelsSupported(void)
  60 {
  61     static HANDLE   hDbgHelp /* = NULL */;
  62
  63     static const WCHAR    wszDbgHelp[] = {'D','B','G','H','E','L','P','.','D','L','L',0};
  64
  65     if (hDbgHelp) return TRUE;
  66
  67     if (!(hDbgHelp = LoadLibraryW(wszDbgHelp))) return FALSE;
  68     pSymSetOptions = (void*)GetProcAddress(hDbgHelp, "SymSetOptions");
  69     pSymInitialize = (void*)GetProcAddress(hDbgHelp, "SymInitialize");
  70     pSymLoadModule = (void*)GetProcAddress(hDbgHelp, "SymLoadModule");
  71     pSymFromName   = (void*)GetProcAddress(hDbgHelp, "SymFromName");
  72     pSymCleanup    = (void*)GetProcAddress(hDbgHelp, "SymCleanup");
  73     if (!pSymSetOptions || !pSymInitialize || !pSymLoadModule || !pSymCleanup || !pSymFromName)
  74     {
  75         FreeLibrary(hDbgHelp);
  76         hDbgHelp = NULL;
  77         return FALSE;
  78     }
  79     return TRUE;
  80 }
  81
  82 static DWORD    get_selected_pid(void)
  83 {
  84     LVITEM      lvitem;
  85     ULONG       Index;
  86     DWORD       dwProcessId;
  87
  88     for (Index = 0; Index < (ULONG)ListView_GetItemCount(hProcessPageListCtrl); Index++)
  89     {
  90         lvitem.mask = LVIF_STATE;
  91         lvitem.stateMask = LVIS_SELECTED;
  92         lvitem.iItem = Index;
  93         lvitem.iSubItem = 0;
  94
  95         SendMessage(hProcessPageListCtrl, LVM_GETITEM, 0, (LPARAM) &lvitem);
  96
  97         if (lvitem.state & LVIS_SELECTED)
  98             break;
  99     }
 100
 101     dwProcessId = PerfDataGetProcessId(Index);
 102
 103     if ((ListView_GetSelectedCount(hProcessPageListCtrl) != 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     char        val[2];
 112     LVITEMA     lvitem;
 113     int         index;
 114     HWND        hChannelLV = user;
 115
 116     lvitem.mask = LVIF_TEXT;
 117     lvitem.pszText = channel->name;
 118     lvitem.iItem = 0;
 119     lvitem.iSubItem = 0;
 120
 121     index = ListView_InsertItem(hChannelLV, &lvitem);
 122     if (index == -1) return 0;
 123
 124     val[1] = '\0';
 125     for (j = 0; j < 4; j++)
 126     {
 127         val[0] = (channel->flags & (1 << j)) ? 'x' : ' ';
 128         ListView_SetItemText(hChannelLV, index, j + 1, val);
 129     }
 130     return 1;
 131 }
 132
 133 struct cce_user
 134 {
 135     const char* name;           /* channel to look for */
 136     unsigned    value, mask;    /* how to change channel */
 137     unsigned    done;           /* number of successful changes */
 138     unsigned    notdone;        /* number of unsuccessful changes */
 139 };
 140
 141 /******************************************************************
 142  *              change_channel_CB
 143  *
 144  * Callback used for changing a given channel attributes
 145  */
 146 static int change_channel_CB(HANDLE hProcess, void* addr, struct __wine_debug_channel *channel, void* pmt)
 147 {
 148     struct cce_user* user = (struct cce_user*)pmt;
 149
 150     if (!user->name || !strcmp(channel->name, user->name))
 151     {
 152         channel->flags = (channel->flags & ~user->mask) | (user->value & user->mask);
 153         if (WriteProcessMemory(hProcess, addr, channel, sizeof(*channel), NULL))
 154             user->done++;
 155         else
 156             user->notdone++;
 157     }
 158     return 1;
 159 }
 160
 161 static void* get_symbol(HANDLE hProcess, const char* name)
 162 {
 163     char                buffer[sizeof(IMAGEHLP_SYMBOL) + 256];
 164     SYMBOL_INFO*        si = (SYMBOL_INFO*)buffer;
 165     void*               ret = NULL;
 166
 167     /* also ask for wine extensions (loading symbols from ELF files) */
 168     pSymSetOptions(SYMOPT_DEFERRED_LOADS | SYMOPT_PUBLICS_ONLY | 0x40000000);
 169     /* FIXME: the TRUE option is due to the fact that dbghelp requires it
 170      * when loading an ELF module
 171      */
 172     if (pSymInitialize(hProcess, NULL, TRUE))
 173     {
 174         si->SizeOfStruct = sizeof(*si);
 175         si->MaxNameLen = sizeof(buffer) - sizeof(IMAGEHLP_SYMBOL);
 176         if (pSymFromName(hProcess, name, si))
 177             ret = (void*)(ULONG_PTR)si->Address;
 178         pSymCleanup(hProcess);
 179     }
 180     return ret;
 181 }
 182
 183 typedef int (*EnumChannelCB)(HANDLE, void*, struct __wine_debug_channel*, void*);
 184
 185 /******************************************************************
 186  *              enum_channel
 187  *
 188  * Enumerates all known channels on process hProcess through callback
 189  * ce.
 190  */
 191 static int enum_channel(HANDLE hProcess, EnumChannelCB ce, void* user)
 192 {
 193     struct __wine_debug_channel channel;
 194     int                         ret = 1;
 195     void*                       addr;
 196
 197     if (!(addr = get_symbol(hProcess, "libwine.so.1!debug_options"))) return -1;
 198
 199     while (ret && addr && ReadProcessMemory(hProcess, addr, &channel, sizeof(channel), NULL))
 200     {
 201         if (!channel.name[0]) break;
 202         ret = ce(hProcess, addr, &channel, user);
 203         addr = (struct __wine_debug_channel *)addr + 1;
 204     }
 205     return 0;
 206 }
 207
 208 static void DebugChannels_FillList(HWND hChannelLV)
 209 {
 210     HANDLE      hProcess;
 211
 212     SendMessage(hChannelLV, LVM_DELETEALLITEMS, 0, 0);
 213
 214     hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_OPERATION | PROCESS_VM_READ, FALSE, get_selected_pid());
 215     if (!hProcess) return; /* FIXME messagebox */
 216     SendMessage(hChannelLV, WM_SETREDRAW, FALSE, 0);
 217     enum_channel(hProcess, list_channel_CB, (void*)hChannelLV);
 218     SendMessage(hChannelLV, WM_SETREDRAW, TRUE, 0);
 219     CloseHandle(hProcess);
 220 }
 221
 222 static void DebugChannels_OnCreate(HWND hwndDlg)
 223 {
 224     HWND        hLV = GetDlgItem(hwndDlg, IDC_DEBUG_CHANNELS_LIST);
 225     LVCOLUMNW   lvc;
 226
 227     static WCHAR debug_channelW[] = {'D','e','b','u','g',' ','C','h','a','n','n','e','l',0},
 228                  fixmeW[]         = {'F','i','x','m','e',0},
 229                  errW[]           = {'E','r','r',0},
 230                  warnW[]          = {'W','a','r','n',0},
 231                  traceW[]         = {'T','r','a','c','e',0};
 232
 233     lvc.mask = LVCF_FMT | LVCF_TEXT | LVCF_WIDTH;
 234     lvc.fmt = LVCFMT_LEFT;
 235     lvc.pszText = debug_channelW;
 236     lvc.cx = 100;
 237     SendMessageW(hLV, LVM_INSERTCOLUMNW, 0, (LPARAM) &lvc);
 238
 239     lvc.mask = LVCF_FMT | LVCF_TEXT | LVCF_WIDTH;
 240     lvc.fmt = LVCFMT_CENTER;
 241     lvc.pszText = fixmeW;
 242     lvc.cx = 55;
 243     SendMessageW(hLV, LVM_INSERTCOLUMNW, 1, (LPARAM) &lvc);
 244
 245     lvc.mask = LVCF_FMT | LVCF_TEXT | LVCF_WIDTH;
 246     lvc.fmt = LVCFMT_CENTER;
 247     lvc.pszText = errW;
 248     lvc.cx = 55;
 249     SendMessageW(hLV, LVM_INSERTCOLUMNW, 2, (LPARAM) &lvc);
 250
 251     lvc.mask = LVCF_FMT | LVCF_TEXT | LVCF_WIDTH;
 252     lvc.fmt = LVCFMT_CENTER;
 253     lvc.pszText = warnW;
 254     lvc.cx = 55;
 255     SendMessageW(hLV, LVM_INSERTCOLUMNW, 3, (LPARAM) &lvc);
 256
 257     lvc.mask = LVCF_FMT | LVCF_TEXT | LVCF_WIDTH;
 258     lvc.fmt = LVCFMT_CENTER;
 259     lvc.pszText = traceW;
 260     lvc.cx = 55;
 261     SendMessageW(hLV, LVM_INSERTCOLUMNW, 4, (LPARAM) &lvc);
 262
 263     DebugChannels_FillList(hLV);
 264 }
 265
 266 static void DebugChannels_OnNotify(HWND hDlg, LPARAM lParam)
 267 {
 268     NMHDR*      nmh = (NMHDR*)lParam;
 269
 270     switch (nmh->code)
 271     {
 272     case NM_CLICK:
 273         if (nmh->idFrom == IDC_DEBUG_CHANNELS_LIST)
 274         {
 275             LVHITTESTINFO       lhti;
 276             HWND                hChannelLV;
 277             HANDLE              hProcess;
 278             NMITEMACTIVATE*     nmia = (NMITEMACTIVATE*)lParam;
 279
 280             hProcess = OpenProcess(PROCESS_VM_OPERATION | PROCESS_VM_READ | PROCESS_VM_WRITE, FALSE, get_selected_pid());
 281             if (!hProcess) return; /* FIXME message box */
 282             lhti.pt = nmia->ptAction;
 283             hChannelLV = GetDlgItem(hDlg, IDC_DEBUG_CHANNELS_LIST);
 284             SendMessage(hChannelLV, LVM_SUBITEMHITTEST, 0, (LPARAM)&lhti);
 285             if (nmia->iSubItem >= 1 && nmia->iSubItem <= 4)
 286             {
 287                 TCHAR           val[2];
 288                 TCHAR           name[32];
 289                 unsigned        bitmask = 1 << (lhti.iSubItem - 1);
 290                 struct cce_user user;
 291
 292                 ListView_GetItemText(hChannelLV, lhti.iItem, 0, name, sizeof(name) / sizeof(name[0]));
 293                 ListView_GetItemText(hChannelLV, lhti.iItem, lhti.iSubItem, val, sizeof(val) / sizeof(val[0]));
 294                 user.name = name;
 295                 user.value = (val[0] == 'x') ? 0 : bitmask;
 296                 user.mask = bitmask;
 297                 user.done = user.notdone = 0;
 298                 enum_channel(hProcess, change_channel_CB, &user);
 299                 if (user.done)
 300                 {
 301                     val[0] ^= ('x' ^ ' ');
 302                     ListView_SetItemText(hChannelLV, lhti.iItem, lhti.iSubItem, val);
 303                 }
 304                 if (user.notdone)
 305                     printf("Some channel instances weren't correctly set\n");
 306             }
 307             CloseHandle(hProcess);
 308         }
 309         break;
 310     }
 311 }
 312
 313 static INT_PTR CALLBACK DebugChannelsDlgProc(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
 314 {
 315     switch (message)
 316     {
 317     case WM_INITDIALOG:
 318         DebugChannels_OnCreate(hDlg);
 319         return TRUE;
 320     case WM_COMMAND:
 321         if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL)
 322         {
 323             EndDialog(hDlg, LOWORD(wParam));
 324             return TRUE;
 325         }
 326         break;
 327     case WM_NOTIFY:
 328         DebugChannels_OnNotify(hDlg, lParam);
 329         break;
 330     }
 331     return FALSE;
 332 }
 333
 334 void ProcessPage_OnDebugChannels(void)
 335 {
 336     DialogBoxW(hInst, (LPCWSTR)IDD_DEBUG_CHANNELS_DIALOG, hMainWnd, DebugChannelsDlgProc);
 337 }