Changeset 43 for trunk/src/reglookup.c

Timestamp:

08/05/05 20:47:37 (19 years ago)

Author:

tim

Message:

Fixed memory allocation and string issues in ACL code.

Fixed bug with filtered keys and value printing.

Cleaned up tree traversal routines.

File:

• trunk/src/reglookup.c (modified) (14 diffs)

trunk/src/reglookup.c

@@ -267 +267 @@
 
 /* Security descriptor print functions  */
-
+/* XXX: these functions should be moved out into regfio library */
 const char* ace_type2str(uint8 type)
 {
@@ -330 +330 @@
 {
   char* ret_val = malloc(9*sizeof(char));
-  sprintf(ret_val, "%8X", perms);
+  sprintf(ret_val, "%.8X", perms);
 
   return ret_val;
@@ -369 +369 @@
   char field_delim = ':';
 
+printf("acl: %.8X\n", (uint32)acl);
+
   for (i = 0; i < acl->num_aces; i++)
   {
@@ -379 +381 @@
     /* XXX: this is slow */
     extra = strlen(sid_str) + strlen(type_str) 
-          + strlen(perms_str) + strlen(flags_str);
-    ret_val = realloc(ret_val, size+extra+5);
+          + strlen(perms_str) + strlen(flags_str)+5;
+    ret_val = realloc(ret_val, size+extra);
     if(ret_val == NULL)
       return NULL;
-    snprintf(ret_val+size, extra+4, "%s%s%c%s%c%s%c%s",
-             ace_delim,sid_str,
-             field_delim,type_str,
-             field_delim,perms_str,
-             field_delim,flags_str);
-    size += extra;
+    size += snprintf(ret_val+size, extra, "%s%s%c%s%c%s%c%s",
+                     ace_delim,sid_str,
+                     field_delim,type_str,
+                     field_delim,perms_str,
+                     field_delim,flags_str);
     ace_delim = "|";
     free(sid_str);
@@ -404 +405 @@
     return get_acl(sec_desc->sacl);
   else
-    return "";
+    return NULL;
 }
 
@@ -413 +414 @@
     return get_acl(sec_desc->dacl);
   else
-    return "";
+    return NULL;
 }
 
@@ -483 +484 @@
   if (buf == NULL)
     return NULL;
-  buf[0] = '\0';
+  buf[0] = '/';
+  buf[1] = '\0';
 
   iter = void_stack_iterator_new(nk_stack);
@@ -530 +532 @@
   char* quoted_name;
 
-  if(!type_filter_enabled || (vk->type == type_filter))
-  {
-    /* Thanks Microsoft for making this process so straight-forward!!! */
-    size = (vk->data_size & ~VK_DATA_IN_OFFSET);
-    if(vk->data_size & VK_DATA_IN_OFFSET)
-    {
-      tmp_buf[0] = (uint8)((vk->data_off >> 3) & 0xFF);
-      tmp_buf[1] = (uint8)((vk->data_off >> 2) & 0xFF);
-      tmp_buf[2] = (uint8)((vk->data_off >> 1) & 0xFF);
-      tmp_buf[3] = (uint8)(vk->data_off & 0xFF);
-      if(size > 4)
-        size = 4;
-      quoted_value = data_to_ascii(tmp_buf, 4, vk->type);
-    }
-    else
-    {
-      /* XXX: This is a safety hack.  No data fields have yet been found
-       * larger, but length limits are probably better got from fields
-       * in the registry itself, within reason.
-       */
-      if(size > 16384)
-      {
-        fprintf(stderr, "WARNING: key size %d larger than "
-                        "16384, truncating...\n", size);
-        size = 16384;
-      }
-      quoted_value = data_to_ascii(vk->data, vk->data_size, vk->type);
-    }
-
-    /* XXX: Sometimes value names can be NULL in registry.  Need to
-     *      figure out why and when, and generate the appropriate output
-     *      for that condition.
+  /* Thanks Microsoft for making this process so straight-forward!!! */
+  size = (vk->data_size & ~VK_DATA_IN_OFFSET);
+  if(vk->data_size & VK_DATA_IN_OFFSET)
+  {
+    tmp_buf[0] = (uint8)((vk->data_off >> 3) & 0xFF);
+    tmp_buf[1] = (uint8)((vk->data_off >> 2) & 0xFF);
+    tmp_buf[2] = (uint8)((vk->data_off >> 1) & 0xFF);
+    tmp_buf[3] = (uint8)(vk->data_off & 0xFF);
+    if(size > 4)
+      size = 4;
+    quoted_value = data_to_ascii(tmp_buf, 4, vk->type);
+  }
+  else
+  {
+    /* XXX: This is a safety hack.  No data fields have yet been found
+     * larger, but length limits are probably better got from fields
+     * in the registry itself, within reason.
      */
-    quoted_prefix = quote_string(prefix, special_chars);
-    quoted_name = quote_string(vk->valuename, special_chars);
-
+    if(size > 16384)
+    {
+      fprintf(stderr, "WARNING: key size %d larger than "
+              "16384, truncating...\n", size);
+      size = 16384;
+    }
+    quoted_value = data_to_ascii(vk->data, vk->data_size, vk->type);
+  }
+  
+  /* XXX: Sometimes value names can be NULL in registry.  Need to
+   *      figure out why and when, and generate the appropriate output
+   *      for that condition.
+   */
+  quoted_prefix = quote_string(prefix, special_chars);
+  quoted_name = quote_string(vk->valuename, special_chars);
+  
+  if(print_security)
     printf("%s/%s,%s,%s,,,,,\n", quoted_prefix, quoted_name,
            regfio_type_val2str(vk->type), quoted_value);
-
-    if(quoted_value != NULL)
-      free(quoted_value);
-    if(quoted_prefix != NULL)
-      free(quoted_prefix);
-    if(quoted_name != NULL)
-      free(quoted_name);
-  }
+  else
+    printf("%s/%s,%s,%s,\n", quoted_prefix, quoted_name,
+           regfio_type_val2str(vk->type), quoted_value);
+  
+  if(quoted_value != NULL)
+    free(quoted_value);
+  if(quoted_prefix != NULL)
+    free(quoted_prefix);
+  if(quoted_name != NULL)
+    free(quoted_name);
 }
 
@@ -584 +587 @@
   
   for(i=0; i < nk->num_values; i++)
-    printValue(&nk->values[i], prefix);
-}
-
-
-/* XXX: this function is god-awful.  Needs to be re-designed. */
-void printKeyTree(REGF_FILE* f, void_stack* nk_stack, char* prefix)
-{
-  REGF_NK_REC* cur;
-  REGF_NK_REC* sub;
-  char* path = NULL;
-  char* val_path = NULL;
+    if(!type_filter_enabled || (nk->values[i].type == type_filter))
+      printValue(&nk->values[i], prefix);
+}
+
+
+void printKey(REGF_NK_REC* k, char* full_path)
+{
+  static char empty_str[1] = "";
   char* owner = NULL;
   char* group = NULL;
@@ -603 +603 @@
   struct tm* tmp_time_s = NULL;
 
+  *tmp_time = nt_time_to_unix(&k->mtime);
+  tmp_time_s = gmtime(tmp_time);
+  strftime(mtime, sizeof(mtime), "%Y-%m-%d %H:%M:%S", tmp_time_s);
+
+  if(print_security)
+  {
+    owner = get_owner(k->sec_desc->sec_desc);
+    group = get_group(k->sec_desc->sec_desc);
+    sacl = get_sacl(k->sec_desc->sec_desc);
+    dacl = get_dacl(k->sec_desc->sec_desc);
+    if(owner == NULL)
+      owner = empty_str;
+    if(group == NULL)
+      group = empty_str;
+    if(sacl == NULL)
+      sacl = empty_str;
+    if(dacl == NULL)
+      dacl = empty_str;
+
+    printf("%s,KEY,,%s,%s,%s,%s,%s\n", full_path, mtime, 
+           owner, group, sacl, dacl);
+
+    if(owner != empty_str)
+      free(owner);
+    if(group != empty_str)
+      free(group);
+    if(sacl != empty_str)
+      free(sacl);
+    if(dacl != empty_str)
+      free(dacl);
+  }
+  else
+    printf("%s,KEY,,%s\n", full_path, mtime);
+}
+
+
+/* XXX: this function is god-awful.  Needs to be re-designed. */
+void printKeyTree(REGF_FILE* f, void_stack* nk_stack, char* prefix)
+{
+  REGF_NK_REC* cur;
+  REGF_NK_REC* sub;
+  char* path = NULL;
+  char* val_path = NULL;
+
   int key_type = regfio_type_str2val("KEY");
-
+  
   if((cur = (REGF_NK_REC*)void_stack_cur(nk_stack)) != NULL)
   {
@@ -610 +654 @@
     path = stack2Path(nk_stack);
     
-    if(strlen(path) > 0)
-      if(!type_filter_enabled || (key_type == type_filter))
-      {
-        owner = get_owner(cur->sec_desc->sec_desc);
-        group = get_group(cur->sec_desc->sec_desc);
-        sacl = get_sacl(cur->sec_desc->sec_desc);
-        dacl = get_dacl(cur->sec_desc->sec_desc);
-        *tmp_time = nt_time_to_unix(&cur->mtime);
-        tmp_time_s = gmtime(tmp_time);
-        strftime(mtime, sizeof(mtime), "%Y-%m-%d %H:%M:%S", tmp_time_s);
-        printf("%s%s,KEY,,%s,%s,%s,%s,%s\n", prefix, path, mtime, 
-               owner, group, sacl, dacl);
-        if(owner != NULL)
-          free(owner);
-        owner = NULL;
-        if(group != NULL)
-          free(group);
-        group = NULL;
-        if(sacl != NULL)
-          free(sacl);
-        sacl = NULL;
-        if(dacl != NULL)
-          free(dacl);
-        dacl = NULL;
-      }
+
+    val_path = (char*)malloc(strlen(prefix)+strlen(path)+1);
+    sprintf(val_path, "%s%s", prefix, path);
+    if(!type_filter_enabled || (key_type == type_filter))
+      printKey(cur, val_path);
+
     if(!type_filter_enabled || (key_type != type_filter))
-      printValueList(cur, path);
+      printValueList(cur, val_path);
+    if(val_path != NULL)
+      free(val_path);
     while((cur = (REGF_NK_REC*)void_stack_cur(nk_stack)) != NULL)
     {
@@ -649 +676 @@
           sprintf(val_path, "%s%s", prefix, path);
           if(!type_filter_enabled || (key_type == type_filter))
-          {
-            owner = get_owner(sub->sec_desc->sec_desc);
-            group = get_group(sub->sec_desc->sec_desc);
-            sacl = get_sacl(sub->sec_desc->sec_desc);
-            dacl = get_dacl(sub->sec_desc->sec_desc);
-            *tmp_time = nt_time_to_unix(&cur->mtime);
-            tmp_time_s = gmtime(tmp_time);
-            strftime(mtime, sizeof(mtime), "%Y-%m-%d %H:%M:%S", tmp_time_s);
-            printf("%s,KEY,,%s,%s,%s,%s,%s\n", val_path, mtime,
-                   owner, group, sacl, dacl);
-          }
+            printKey(sub, val_path);
           if(!type_filter_enabled || (key_type != type_filter))
             printValueList(sub, val_path);
           if(val_path != NULL)
             free(val_path);
-          val_path = NULL;
-          if(path != NULL)
-            free(path);
-          path = NULL;
-          if(owner != NULL)
-            free(owner);
-          owner = NULL;
-          if(group != NULL)
-            free(group);
-          group = NULL;
-          /* XXX: causes segfaults.  fix mem allocation bug */
-          /*      if(sacl != NULL)
-            free(sacl);*/
-          sacl = NULL;
-          if(dacl != NULL)
-            free(dacl);
-          dacl = NULL;
-          tmp_time_s = NULL;
         }
       }
@@ -754 +753 @@
     if(strcasecmp(sub->values[i].valuename, cur_str) == 0)
     {
+      /* XXX: fix mem leak with stack2Path return value */
       printValue(&sub->values[i], stack2Path(nk_stack));
       return 0;
@@ -867 +867 @@
   {
     if(print_header)
-      printf("PATH,TYPE,VALUE,MTIME,OWNER,GROUP,SACL,DACL\n");
+    {
+      if(print_security)
+        printf("PATH,TYPE,VALUE,MTIME,OWNER,GROUP,SACL,DACL\n");
+      else
+        printf("PATH,TYPE,VALUE,MTIME\n");
+    }
 
     path_stack = path2Stack(path_filter);