programs/taskmgr/dbgchnl.c

   1 /*
   2  *  ReactOS Task Manager
   3  *
   4  *  dbgchnl.c
   5  *
   6  *  Copyright (C) 2003 - 2004 Eric Pouech
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  21  */
  22
  23 #define WIN32_LEAN_AND_MEAN    /* Exclude rarely-used stuff from Windows headers */
  24 #include <windows.h>
  25 #include <ctype.h>
  26 #include <commctrl.h>
  27 #include <stdlib.h>
  28 #include <malloc.h>
  29 #include <memory.h>
  30 #include <tchar.h>
  31 #include <stdio.h>
  32 #include <winnt.h>
  33 #include <dbghelp.h>
  34
  35 #include "taskmgr.h"
  36 #include "perfdata.h"
  37 #include "column.h"
  38 #include "wine/debug.h"
  39
  40 /* TODO:
  41  *      - the dialog box could be non modal
  42  *      - in that case,
  43  *              + could refresh channels from time to time
  44  *              + set the name of exec (and perhaps its pid) in dialog title
  45  *      - get a better UI (replace the 'x' by real tick boxes in list view)
  46  *      - enhance visual feedback: the list is large, and it's hard to get the
  47  *        right line when clicking on rightmost column (trace for example)
  48  *      - get rid of printfs (error reporting) and use real message boxes
  49  *      - include the column width settings in the full column management scheme
  50  *      - use more global settings (like having a temporary on/off
  51  *        setting for a fixme:s or err:s
  52  */
  53
  54 static DWORD (WINAPI *pSymSetOptions)(DWORD);
  55 static BOOL  (WINAPI *pSymInitialize)(HANDLE, PSTR, BOOL);
  56 static DWORD (WINAPI *pSymLoadModule)(HANDLE, HANDLE, PCSTR, PCSTR, DWORD, DWORD);
  57 static BOOL  (WINAPI *pSymCleanup)(HANDLE);
  58 static BOOL  (WINAPI *pSymFromName)(HANDLE, PCSTR, PSYMBOL_INFO);
  59
  60 BOOL AreDebugChannelsSupported(void)
  61 {
  62     static HANDLE   hDbgHelp /* = NULL */;
  63
  64     if (hDbgHelp) return TRUE;
  65
  66     if (!(hDbgHelp = LoadLibrary("dbghelp.dll"))) 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     LVITEM      lvitem;
  84     ULONG       Index;
  85     DWORD       dwProcessId;
  86
  87     for (Index = 0; Index < (ULONG)ListView_GetItemCount(hProcessPageListCtrl); Index++)
  88     {
  89         lvitem.mask = LVIF_STATE;
  90         lvitem.stateMask = LVIS_SELECTED;
  91         lvitem.iItem = Index;
  92         lvitem.iSubItem = 0;
  93
  94         SendMessage(hProcessPageListCtrl, LVM_GETITEM, 0, (LPARAM) &lvitem);
  95
  96         if (lvitem.state & LVIS_SELECTED)
  97             break;
  98     }
  99
 100     dwProcessId = PerfDataGetProcessId(Index);
 101
 102     if ((ListView_GetSelectedCount(hProcessPageListCtrl) != 1) || (dwProcessId == 0))
 103         return 0;
 104     return dwProcessId;
 105 }
 106
 107 static int     list_channel_CB(HANDLE hProcess, void* addr, struct __wine_debug_channel* channel, void* user)
 108 {
 109     int         j;
 110     char        val[2];
 111     LVITEMA     lvitem;
 112     int         index;
 113     HWND        hChannelLV = (HWND)user;
 114
 115     lvitem.mask = LVIF_TEXT;
 116     lvitem.pszText = channel->name;
 117     lvitem.iItem = 0;
 118     lvitem.iSubItem = 0;
 119
 120     index = ListView_InsertItem(hChannelLV, &lvitem);
 121     if (index == -1) return 0;
 122
 123     val[1] = '\0';
 124     for (j = 0; j < 4; j++)
 125     {
 126         val[0] = (channel->flags & (1 << j)) ? 'x' : ' ';
 127         ListView_SetItemText(hChannelLV, index, j + 1, val);
 128     }
 129     return 1;
 130 }
 131
 132 struct cce_user
 133 {
 134     const char* name;           /* channel to look for */
 135     unsigned    value, mask;    /* how to change channel */
 136     unsigned    done;           /* number of successful changes */
 137     unsigned    notdone;        /* number of unsuccessful changes */
 138 };
 139
 140 /******************************************************************
 141  *              change_channel_CB
 142  *
 143  * Callback used for changing a given channel attributes
 144  */
 145 static int change_channel_CB(HANDLE hProcess, void* addr, struct __wine_debug_channel *channel, void* pmt)
 146 {
 147     struct cce_user* user = (struct cce_user*)pmt;
 148
 149     if (!user->name || !strcmp(channel->name, user->name))
 150     {
 151         channel->flags = (channel->flags & ~user->mask) | (user->value & user->mask);
 152         if (WriteProcessMemory(hProcess, addr, channel, sizeof(*channel), NULL))
 153             user->done++;
 154         else
 155             user->notdone++;
 156     }
 157     return 1;
 158 }
 159
 160 static void* get_symbol(HANDLE hProcess, const char* name, const char* lib)
 161 {
 162     char                buffer[sizeof(IMAGEHLP_SYMBOL) + 256];
 163     SYMBOL_INFO*        si = (SYMBOL_INFO*)buffer;
 164     void*               ret = NULL;
 165
 166     pSymSetOptions(SYMOPT_DEFERRED_LOADS | SYMOPT_PUBLICS_ONLY);
 167     /* FIXME: the TRUE option is due to the face that dbghelp requires it
 168      * when loading an ELF module
 169      */
 170     if (pSymInitialize(hProcess, NULL, TRUE))
 171     {
 172         si->SizeOfStruct = sizeof(*si);
 173         si->MaxNameLen = sizeof(buffer) - sizeof(IMAGEHLP_SYMBOL);
 174         if (pSymLoadModule(hProcess, NULL, lib, NULL, 0, 0) &&
 175             pSymFromName(hProcess, name, si))
 176             ret = (void*)(ULONG_PTR)si->Address;
 177         pSymCleanup(hProcess);
 178     }
 179     return ret;
 180 }
 181
 182 typedef int (*EnumChannelCB)(HANDLE, void*, struct __wine_debug_channel*, void*);
 183
 184 /******************************************************************
 185  *              enum_channel
 186  *
 187  * Enumerates all known channels on process hProcess through callback
 188  * ce.
 189  */
 190 static int enum_channel(HANDLE hProcess, EnumChannelCB ce, void* user)
 191 {
 192     struct __wine_debug_channel channel;
 193     int                         ret = 1;
 194     void*                       addr;
 195
 196     if (!(addr = get_symbol(hProcess, "debug_options", "libwine.so"))) return -1;
 197
 198     while (ret && addr && ReadProcessMemory(hProcess, addr, &channel, sizeof(channel), NULL))
 199     {
 200         if (!channel.name[0]) break;
 201         ret = ce(hProcess, addr, &channel, user);
 202         addr = (struct __wine_debug_channel *)addr + 1;
 203     }
 204     return 0;
 205 }
 206
 207 static void DebugChannels_FillList(HWND hChannelLV)
 208 {
 209     HANDLE      hProcess;
 210
 211     SendMessage(hChannelLV, LVM_DELETEALLITEMS, 0, 0);
 212
 213     hProcess = OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_OPERATION | PROCESS_VM_READ, FALSE, get_selected_pid());
 214     if (!hProcess) return; /* FIXME messagebox */
 215     SendMessage(hChannelLV, WM_SETREDRAW, FALSE, 0);
 216     enum_channel(hProcess, list_channel_CB, (void*)hChannelLV);
 217     SendMessage(hChannelLV, WM_SETREDRAW, TRUE, 0);
 218     CloseHandle(hProcess);
 219 }
 220
 221 static void DebugChannels_OnCreate(HWND hwndDlg)
 222 {
 223     HWND        hLV = GetDlgItem(hwndDlg, IDC_DEBUG_CHANNELS_LIST);
 224     LVCOLUMN    lvc;
 225     static TCHAR debug_channelT[] = {'D','e','b','u','g',' ','C','h','a','n','n','e','l',0},
 226                  fixmeT[]         = {'F','i','x','m','e',0},
 227                  errT[]           = {'E','r','r',0},
 228                  warnT[]          = {'W','a','r','n',0},
 229                  traceT[]         = {'T','r','a','c','e',0};
 230
 231     lvc.mask = LVCF_FMT | LVCF_TEXT | LVCF_WIDTH;
 232     lvc.fmt = LVCFMT_LEFT;
 233     lvc.pszText = debug_channelT;
 234     lvc.cx = 100;
 235     SendMessage(hLV, LVM_INSERTCOLUMN, 0, (LPARAM) &lvc);
 236
 237     lvc.mask = LVCF_FMT | LVCF_TEXT | LVCF_WIDTH;
 238     lvc.fmt = LVCFMT_CENTER;
 239     lvc.pszText = fixmeT;
 240     lvc.cx = 55;
 241     SendMessage(hLV, LVM_INSERTCOLUMN, 1, (LPARAM) &lvc);
 242
 243     lvc.mask = LVCF_FMT | LVCF_TEXT | LVCF_WIDTH;
 244     lvc.fmt = LVCFMT_CENTER;
 245     lvc.pszText = errT;
 246     lvc.cx = 55;
 247     SendMessage(hLV, LVM_INSERTCOLUMN, 2, (LPARAM) &lvc);
 248
 249     lvc.mask = LVCF_FMT | LVCF_TEXT | LVCF_WIDTH;
 250     lvc.fmt = LVCFMT_CENTER;
 251     lvc.pszText = warnT;
 252     lvc.cx = 55;
 253     SendMessage(hLV, LVM_INSERTCOLUMN, 3, (LPARAM) &lvc);
 254
 255     lvc.mask = LVCF_FMT | LVCF_TEXT | LVCF_WIDTH;
 256     lvc.fmt = LVCFMT_CENTER;
 257     lvc.pszText = traceT;
 258     lvc.cx = 55;
 259     SendMessage(hLV, LVM_INSERTCOLUMN, 4, (LPARAM) &lvc);
 260
 261     DebugChannels_FillList(hLV);
 262 }
 263
 264 static void DebugChannels_OnNotify(HWND hDlg, LPARAM lParam)
 265 {
 266     NMHDR*      nmh = (NMHDR*)lParam;
 267
 268     switch (nmh->code)
 269     {
 270     case NM_CLICK:
 271         if (nmh->idFrom == IDC_DEBUG_CHANNELS_LIST)
 272         {
 273             LVHITTESTINFO       lhti;
 274             HWND                hChannelLV;
 275             HANDLE              hProcess;
 276             NMITEMACTIVATE*     nmia = (NMITEMACTIVATE*)lParam;
 277
 278             hProcess = OpenProcess(PROCESS_VM_OPERATION | PROCESS_VM_READ | PROCESS_VM_WRITE, FALSE, get_selected_pid());
 279             if (!hProcess) return; /* FIXME message box */
 280             lhti.pt = nmia->ptAction;
 281             hChannelLV = GetDlgItem(hDlg, IDC_DEBUG_CHANNELS_LIST);
 282             SendMessage(hChannelLV, LVM_SUBITEMHITTEST, 0, (LPARAM)&lhti);
 283             if (nmia->iSubItem >= 1 && nmia->iSubItem <= 4)
 284             {
 285                 TCHAR           val[2];
 286                 TCHAR           name[32];
 287                 unsigned        bitmask = 1 << (lhti.iSubItem - 1);
 288                 struct cce_user user;
 289
 290                 ListView_GetItemText(hChannelLV, lhti.iItem, 0, name, sizeof(name) / sizeof(name[0]));
 291                 ListView_GetItemText(hChannelLV, lhti.iItem, lhti.iSubItem, val, sizeof(val) / sizeof(val[0]));
 292                 user.name = name;
 293                 user.value = (val[0] == 'x') ? 0 : bitmask;
 294                 user.mask = bitmask;
 295                 user.done = user.notdone = 0;
 296                 enum_channel(hProcess, change_channel_CB, &user);
 297                 if (user.done)
 298                 {
 299                     val[0] ^= ('x' ^ ' ');
 300                     ListView_SetItemText(hChannelLV, lhti.iItem, lhti.iSubItem, val);
 301                 }
 302                 if (user.notdone)
 303                     printf("Some channel instances weren't correctly set\n");
 304             }
 305             CloseHandle(hProcess);
 306         }
 307         break;
 308     }
 309 }
 310
 311 static INT_PTR CALLBACK DebugChannelsDlgProc(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
 312 {
 313     switch (message)
 314     {
 315     case WM_INITDIALOG:
 316         DebugChannels_OnCreate(hDlg);
 317         return TRUE;
 318     case WM_COMMAND:
 319         if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL)
 320         {
 321             EndDialog(hDlg, LOWORD(wParam));
 322             return TRUE;
 323         }
 324         break;
 325     case WM_NOTIFY:
 326         DebugChannels_OnNotify(hDlg, lParam);
 327         break;
 328     }
 329     return FALSE;
 330 }
 331
 332 void ProcessPage_OnDebugChannels(void)
 333 {
 334     DialogBox(hInst, (LPCTSTR)IDD_DEBUG_CHANNELS_DIALOG, hMainWnd, DebugChannelsDlgProc);
 335 }