dlls/dbghelp/source.c

   1 /*
   2  * File source.c - source files management
   3  *
   4  * Copyright (C) 2004,      Eric Pouech.
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  *
  20  */
  21 #include "config.h"
  22 #include <stdlib.h>
  23 #include <stdio.h>
  24 #include <string.h>
  25 #include <assert.h>
  26
  27 #include "dbghelp_private.h"
  28 #include "wine/debug.h"
  29
  30 WINE_DEFAULT_DEBUG_CHANNEL(dbghelp);
  31
  32 /******************************************************************
  33  *              source_find
  34  *
  35  * check whether a source file has already been stored
  36  */
  37 static unsigned source_find(const struct module* module, const char* name)
  38 {
  39     char*       ptr = module->sources;
  40
  41     while (*ptr)
  42     {
  43         if (strcmp(ptr, name) == 0) return ptr - module->sources;
  44         ptr += strlen(ptr) + 1;
  45     }
  46     return (unsigned)-1;
  47 }
  48
  49 /******************************************************************
  50  *              source_new
  51  *
  52  * checks if source exists. if not, add it
  53  */
  54 unsigned source_new(struct module* module, const char* base, const char* name)
  55 {
  56     unsigned    ret;
  57     const char* full;
  58     char*       tmp = NULL;
  59
  60     if (!name) return (unsigned)-1;
  61     if (!base || *name == '/')
  62         full = name;
  63     else
  64     {
  65         unsigned bsz = strlen(base);
  66
  67         tmp = HeapAlloc(GetProcessHeap(), 0, bsz + 1 + strlen(name) + 1);
  68         if (!tmp) return (unsigned)-1;
  69         full = tmp;
  70         strcpy(tmp, base);
  71         if (tmp[bsz - 1] != '/') tmp[bsz++] = '/';
  72         strcpy(&tmp[bsz], name);
  73     }
  74     if (!module->sources || (ret = source_find(module, full)) == (unsigned)-1)
  75     {
  76         int len = strlen(full) + 1;
  77         if (module->sources_used + len + 1 > module->sources_alloc)
  78         {
  79             /* Alloc by block of 256 bytes */
  80             module->sources_alloc = (module->sources_used + len + 1 + 255) & ~255;
  81             if (!module->sources)
  82                 module->sources = HeapAlloc(GetProcessHeap(), 0, module->sources_alloc);
  83             else
  84                 module->sources = HeapReAlloc(GetProcessHeap(), 0, module->sources,
  85                                               module->sources_alloc);
  86         }
  87         ret = module->sources_used;
  88         memcpy(module->sources + module->sources_used, full, len);
  89         module->sources_used += len;
  90         module->sources[module->sources_used] = '\0';
  91     }
  92     HeapFree(GetProcessHeap(), 0, tmp);
  93     return ret;
  94 }
  95
  96 /******************************************************************
  97  *              source_get
  98  *
  99  * returns a stored source file name
 100  */
 101 const char* source_get(const struct module* module, unsigned idx)
 102 {
 103     if (idx == -1) return "";
 104     assert(module->sources);
 105     return module->sources + idx;
 106 }
 107
 108 /******************************************************************
 109  *              SymEnumSourceFiles (DBGHELP.@)
 110  *
 111  */
 112 BOOL WINAPI SymEnumSourceFiles(HANDLE hProcess, ULONG64 ModBase, PCSTR Mask,
 113                                PSYM_ENUMSOURCEFILES_CALLBACK cbSrcFiles,
 114                                PVOID UserContext)
 115 {
 116     struct module_pair  pair;
 117     SOURCEFILE          sf;
 118     char*               ptr;
 119
 120     if (!cbSrcFiles) return FALSE;
 121     pair.pcs = process_find_by_handle(hProcess);
 122     if (!pair.pcs) return FALSE;
 123
 124     if (ModBase)
 125     {
 126         pair.requested = module_find_by_addr(pair.pcs, ModBase, DMT_UNKNOWN);
 127         if (!module_get_debug(&pair)) return FALSE;
 128     }
 129     else
 130     {
 131         if (Mask[0] == '!')
 132         {
 133             pair.requested = module_find_by_nameA(pair.pcs, Mask + 1);
 134             if (!module_get_debug(&pair)) return FALSE;
 135         }
 136         else
 137         {
 138             FIXME("Unsupported yet (should get info from current context)\n");
 139             return FALSE;
 140         }
 141     }
 142     if (!pair.effective->sources) return FALSE;
 143     for (ptr = pair.effective->sources; *ptr; ptr += strlen(ptr) + 1)
 144     {
 145         /* FIXME: not using Mask */
 146         sf.ModBase = ModBase;
 147         sf.FileName = ptr;
 148         if (!cbSrcFiles(&sf, UserContext)) break;
 149     }
 150
 151     return TRUE;
 152 }
 153
 154 /******************************************************************
 155  *              SymGetSourceFileToken (DBGHELP.@)
 156  *
 157  */
 158 BOOL WINAPI SymGetSourceFileToken(HANDLE hProcess, ULONG64 base,
 159                                   PCSTR src, PVOID* token, DWORD* size)
 160 {
 161     FIXME("%p %s %s %p %p: stub!\n",
 162           hProcess, wine_dbgstr_longlong(base), debugstr_a(src), token, size);
 163     SetLastError(ERROR_NOT_SUPPORTED);
 164     return FALSE;
 165 }
 166
 167 /******************************************************************
 168  *              SymGetSourceFileTokenW (DBGHELP.@)
 169  *
 170  */
 171 BOOL WINAPI SymGetSourceFileTokenW(HANDLE hProcess, ULONG64 base,
 172                                    PCWSTR src, PVOID* token, DWORD* size)
 173 {
 174     FIXME("%p %s %s %p %p: stub!\n",
 175           hProcess, wine_dbgstr_longlong(base), debugstr_w(src), token, size);
 176     SetLastError(ERROR_NOT_SUPPORTED);
 177     return FALSE;
 178 }