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 static struct module*   rb_module;
  33 struct source_rb
  34 {
  35     struct wine_rb_entry        entry;
  36     unsigned                    source;
  37 };
  38
  39 static void *source_rb_alloc(size_t size)
  40 {
  41     return HeapAlloc(GetProcessHeap(), 0, size);
  42 }
  43
  44 static void *source_rb_realloc(void *ptr, size_t size)
  45 {
  46     return HeapReAlloc(GetProcessHeap(), 0, ptr, size);
  47 }
  48
  49 static void source_rb_free(void *ptr)
  50 {
  51     HeapFree(GetProcessHeap(), 0, ptr);
  52 }
  53
  54 static int source_rb_compare(const void *key, const struct wine_rb_entry *entry)
  55 {
  56     const struct source_rb *t = WINE_RB_ENTRY_VALUE(entry, const struct source_rb, entry);
  57
  58     return strcmp((const char*)key, rb_module->sources + t->source);
  59 }
  60
  61 const struct wine_rb_functions source_rb_functions =
  62 {
  63     source_rb_alloc,
  64     source_rb_realloc,
  65     source_rb_free,
  66     source_rb_compare,
  67 };
  68
  69 /******************************************************************
  70  *              source_find
  71  *
  72  * check whether a source file has already been stored
  73  */
  74 static unsigned source_find(const char* name)
  75 {
  76     struct wine_rb_entry*       e;
  77
  78     e = wine_rb_get(&rb_module->sources_offsets_tree, name);
  79     if (!e) return -1;
  80     return WINE_RB_ENTRY_VALUE(e, struct source_rb, entry)->source;
  81 }
  82
  83 /******************************************************************
  84  *              source_new
  85  *
  86  * checks if source exists. if not, add it
  87  */
  88 unsigned source_new(struct module* module, const char* base, const char* name)
  89 {
  90     unsigned    ret;
  91     const char* full;
  92     char*       tmp = NULL;
  93
  94     if (!name) return (unsigned)-1;
  95     if (!base || *name == '/')
  96         full = name;
  97     else
  98     {
  99         unsigned bsz = strlen(base);
 100
 101         tmp = HeapAlloc(GetProcessHeap(), 0, bsz + 1 + strlen(name) + 1);
 102         if (!tmp) return (unsigned)-1;
 103         full = tmp;
 104         strcpy(tmp, base);
 105         if (tmp[bsz - 1] != '/') tmp[bsz++] = '/';
 106         strcpy(&tmp[bsz], name);
 107     }
 108     rb_module = module;
 109     if (!module->sources || (ret = source_find(full)) == (unsigned)-1)
 110     {
 111         char* new;
 112         int len = strlen(full) + 1;
 113         struct source_rb* rb;
 114
 115         if (module->sources_used + len + 1 > module->sources_alloc)
 116         {
 117             if (!module->sources)
 118             {
 119                 module->sources_alloc = (module->sources_used + len + 1 + 255) & ~255;
 120                 new = HeapAlloc(GetProcessHeap(), 0, module->sources_alloc);
 121             }
 122             else
 123             {
 124                 module->sources_alloc = max( module->sources_alloc * 2,
 125                                              (module->sources_used + len + 1 + 255) & ~255 );
 126                 new = HeapReAlloc(GetProcessHeap(), 0, module->sources,
 127                                   module->sources_alloc);
 128             }
 129             if (!new) goto done;
 130             module->sources = new;
 131         }
 132         ret = module->sources_used;
 133         memcpy(module->sources + module->sources_used, full, len);
 134         module->sources_used += len;
 135         module->sources[module->sources_used] = '\0';
 136         if ((rb = pool_alloc(&module->pool, sizeof(*rb))))
 137         {
 138             rb->source = ret;
 139             wine_rb_put(&module->sources_offsets_tree, full, &rb->entry);
 140         }
 141     }
 142 done:
 143     HeapFree(GetProcessHeap(), 0, tmp);
 144     return ret;
 145 }
 146
 147 /******************************************************************
 148  *              source_get
 149  *
 150  * returns a stored source file name
 151  */
 152 const char* source_get(const struct module* module, unsigned idx)
 153 {
 154     if (idx == -1) return "";
 155     assert(module->sources);
 156     return module->sources + idx;
 157 }
 158
 159 /******************************************************************
 160  *              SymEnumSourceFiles (DBGHELP.@)
 161  *
 162  */
 163 BOOL WINAPI SymEnumSourceFiles(HANDLE hProcess, ULONG64 ModBase, PCSTR Mask,
 164                                PSYM_ENUMSOURCEFILES_CALLBACK cbSrcFiles,
 165                                PVOID UserContext)
 166 {
 167     struct module_pair  pair;
 168     SOURCEFILE          sf;
 169     char*               ptr;
 170
 171     if (!cbSrcFiles) return FALSE;
 172     pair.pcs = process_find_by_handle(hProcess);
 173     if (!pair.pcs) return FALSE;
 174
 175     if (ModBase)
 176     {
 177         pair.requested = module_find_by_addr(pair.pcs, ModBase, DMT_UNKNOWN);
 178         if (!module_get_debug(&pair)) return FALSE;
 179     }
 180     else
 181     {
 182         if (Mask[0] == '!')
 183         {
 184             pair.requested = module_find_by_nameA(pair.pcs, Mask + 1);
 185             if (!module_get_debug(&pair)) return FALSE;
 186         }
 187         else
 188         {
 189             FIXME("Unsupported yet (should get info from current context)\n");
 190             return FALSE;
 191         }
 192     }
 193     if (!pair.effective->sources) return FALSE;
 194     for (ptr = pair.effective->sources; *ptr; ptr += strlen(ptr) + 1)
 195     {
 196         /* FIXME: not using Mask */
 197         sf.ModBase = ModBase;
 198         sf.FileName = ptr;
 199         if (!cbSrcFiles(&sf, UserContext)) break;
 200     }
 201
 202     return TRUE;
 203 }
 204
 205 /******************************************************************
 206  *              SymGetSourceFileToken (DBGHELP.@)
 207  *
 208  */
 209 BOOL WINAPI SymGetSourceFileToken(HANDLE hProcess, ULONG64 base,
 210                                   PCSTR src, PVOID* token, DWORD* size)
 211 {
 212     FIXME("%p %s %s %p %p: stub!\n",
 213           hProcess, wine_dbgstr_longlong(base), debugstr_a(src), token, size);
 214     SetLastError(ERROR_NOT_SUPPORTED);
 215     return FALSE;
 216 }
 217
 218 /******************************************************************
 219  *              SymGetSourceFileTokenW (DBGHELP.@)
 220  *
 221  */
 222 BOOL WINAPI SymGetSourceFileTokenW(HANDLE hProcess, ULONG64 base,
 223                                    PCWSTR src, PVOID* token, DWORD* size)
 224 {
 225     FIXME("%p %s %s %p %p: stub!\n",
 226           hProcess, wine_dbgstr_longlong(base), debugstr_w(src), token, size);
 227     SetLastError(ERROR_NOT_SUPPORTED);
 228     return FALSE;
 229 }