From: ticktock35 <ticktock35@e8e0d7a0-c8d9-11dd-a880-a1081c7ac358>
Date: Thu, 26 Mar 2009 07:58:43 +0000 (+0000)
Subject: reduce a big memory leak
X-Git-Url: https://git.librecmc.org/?p=oweals%2Fopkg-lede.git;a=commitdiff_plain;h=483c4d7573439e71d0bdfe5a9192b3ffc06d35c1

reduce a big memory leak
connecting deb_extract Null pointers

git-svn-id: http://opkg.googlecode.com/svn/trunk@206 e8e0d7a0-c8d9-11dd-a880-a1081c7ac358
---

diff --git a/libopkg/opkg.c b/libopkg/opkg.c
index 11b5ee7..735fb58 100644
--- a/libopkg/opkg.c
+++ b/libopkg/opkg.c
@@ -1064,6 +1064,7 @@ int opkg_repository_accessibility_check(opkg_t *opkg)
     free(stmp);
 
     str_list_append(src, repo_ptr);
+    free(repo_ptr);
     repositories++;
   }
   while (repositories > 0) 
diff --git a/libopkg/opkg_remove.c b/libopkg/opkg_remove.c
index 0b913fd..3886ccc 100644
--- a/libopkg/opkg_remove.c
+++ b/libopkg/opkg_remove.c
@@ -350,7 +350,7 @@ int remove_data_files_and_list(opkg_conf_t *conf, pkg_t *pkg)
 	  file_name = (char *)iter->data;
 
 	  if (file_is_dir(file_name)) {
-	       str_list_append(&installed_dirs, strdup(file_name));
+	       str_list_append(&installed_dirs, file_name);
 	       continue;
 	  }
 
diff --git a/libopkg/pkg.c b/libopkg/pkg.c
index 6e0f396..1ab24e1 100644
--- a/libopkg/pkg.c
+++ b/libopkg/pkg.c
@@ -1412,6 +1412,7 @@ str_list_t *pkg_get_installed_files(pkg_t *pkg)
 	       sprintf_alloc(&installed_file_name, "%s", file_name);
 	  }
 	  str_list_append(pkg->installed_files, installed_file_name);
+          free(installed_file_name);
 	  free(line);
      }
 
@@ -1433,7 +1434,7 @@ int pkg_free_installed_files(pkg_t *pkg)
 	  return 0;
 
      if (pkg->installed_files) {
-         str_list_deinit(pkg->installed_files);
+         str_list_purge(pkg->installed_files);
      }
 
      pkg->installed_files = NULL;
diff --git a/libopkg/pkg_extract.c b/libopkg/pkg_extract.c
index eae7746..0aae4ad 100644
--- a/libopkg/pkg_extract.c
+++ b/libopkg/pkg_extract.c
@@ -37,7 +37,6 @@ int pkg_extract_control_file_to_stream(pkg_t *pkg, FILE *stream)
 	return EINVAL;
     }
 
-    /* XXX: QUESTION: Is there a way to do this directly with deb_extract now? */
     fputs(buffer, stream);
     free(buffer);
 
@@ -54,10 +53,11 @@ int pkg_extract_control_files_to_dir_with_prefix(pkg_t *pkg,
 						 const char *prefix)
 {
     char *dir_with_prefix;
+    char *buffer = NULL;
 
     sprintf_alloc(&dir_with_prefix, "%s/%s", dir, prefix);
 
-    deb_extract(pkg->local_filename, stderr,
+    buffer = deb_extract(pkg->local_filename, stderr,
 		extract_control_tar_gz
                 | extract_all_to_fs| extract_preserve_date
 		| extract_unconditional,
@@ -65,23 +65,26 @@ int pkg_extract_control_files_to_dir_with_prefix(pkg_t *pkg,
 
     free(dir_with_prefix);
 
-    /* XXX: BUG: how do we know if deb_extract worked or not? This is
-       a defect in the current deb_extract from what I can tell.
-
-       Once this is fixed, audit all calls to deb_extract. */
+    if (buffer == NULL) {
+        return EINVAL;
+    }
+    free(buffer);
     return 0;
 }
 
 int pkg_extract_data_files_to_dir(pkg_t *pkg, const char *dir)
 {
-    deb_extract(pkg->local_filename, stderr,
+    char *buffer = NULL;
+    buffer = deb_extract(pkg->local_filename, stderr,
 		extract_data_tar_gz
                 | extract_all_to_fs| extract_preserve_date
 		| extract_unconditional,
 		dir, NULL);
 
-    /* BUG: How do we know if deb_extract worked or not? This is a
-       defect in the current deb_extract from what I can tell. */
+    if (buffer == NULL) {
+        return EINVAL;
+    }
+    free(buffer);
     return 0;
 }
 
@@ -148,6 +151,7 @@ int pkg_extract_data_file_names_to_file(pkg_t *pkg, const char *file_name)
 
 int pkg_extract_data_file_names_to_stream(pkg_t *pkg, FILE *file)
 {
+    char *buffer = NULL;
     /* XXX: DPKG_INCOMPATIBILITY: deb_extract will extract all of the
        data file names with a '.' as the first character. I've taught
        opkg how to cope with the presence or absence of the '.', but
@@ -160,11 +164,15 @@ int pkg_extract_data_file_names_to_stream(pkg_t *pkg, FILE *file)
        If we wanted to, we could workaround the deb_extract behavior
        right here, by writing to a tmpfile, then munging things as we
        wrote to the actual stream. */
-     deb_extract(pkg->local_filename, file,
+    buffer = deb_extract(pkg->local_filename, file,
 		 extract_quiet | extract_data_tar_gz | extract_list,
 		 NULL, NULL);
 
     /* BUG: How do we know if deb_extract worked or not? This is a
        defect in the current deb_extract from what I can tell. */
+    if (buffer == NULL) {
+        return EINVAL;
+    }
+    free(buffer);
     return 0;
 }
diff --git a/libopkg/str_list.c b/libopkg/str_list.c
index b354c9e..563f3a1 100644
--- a/libopkg/str_list.c
+++ b/libopkg/str_list.c
@@ -26,6 +26,8 @@ int str_list_elt_init(str_list_elt_t *elt, char *data)
 
 void str_list_elt_deinit(str_list_elt_t *elt)
 {
+    if (elt->data)
+        free(elt->data);
     void_list_elt_deinit((void_list_elt_t *) elt);
 }
 
@@ -44,17 +46,26 @@ int str_list_init(str_list_t *list)
 
 void str_list_deinit(str_list_t *list)
 {
-    void_list_deinit((void_list_t *) list);
+    str_list_elt_t *elt;
+    while (!void_list_empty(list)) {
+        elt = str_list_first(list);
+        if (!elt)
+            return;
+        list_del_init(&elt->node);
+        free(elt->data);
+        elt->data=NULL;
+        free(elt);
+    }
 }
 
 int str_list_append(str_list_t *list, char *data)
 {
-    return void_list_append((void_list_t *) list, data);
+    return void_list_append((void_list_t *) list, strdup(data));
 }
 
 int str_list_push(str_list_t *list, char *data)
 {
-    return void_list_push((void_list_t *) list, data);
+    return void_list_push((void_list_t *) list, strdup(data));
 }
 
 str_list_elt_t *str_list_pop(str_list_t *list)
@@ -62,17 +73,21 @@ str_list_elt_t *str_list_pop(str_list_t *list)
     return (str_list_elt_t *) void_list_pop((void_list_t *) list);
 }
 
-str_list_elt_t *str_list_remove(str_list_t *list, str_list_elt_t **iter)
+void str_list_remove(str_list_t *list, str_list_elt_t **iter)
 {
-    return (str_list_elt_t *) void_list_remove((void_list_t *) list,
+    str_list_elt_t * elt = void_list_remove((void_list_t *) list,
 					       (void_list_elt_t **) iter);
+
+    str_list_elt_deinit(elt);
 }
 
-char *str_list_remove_elt(str_list_t *list, const char *target_str)
+void str_list_remove_elt(str_list_t *list, const char *target_str)
 {
-     return (char *)void_list_remove_elt((void_list_t *) list,
+     char *str = void_list_remove_elt((void_list_t *) list,
 					 (void *)target_str,
 					 (void_list_cmp_t)strcmp);
+     if (str) 
+         free(str);
 }
 
 str_list_elt_t *str_list_first(str_list_t *list) {
@@ -93,14 +108,6 @@ str_list_elt_t *str_list_last(str_list_t *list) {
 
 
 void str_list_purge(str_list_t *list) {
-    str_list_elt_t *elt;
-    while (!void_list_empty(list)) {
-        elt = str_list_first(list);
-        if (!elt)
-            return;
-        list_del_init(&elt->node);
-        free(elt->data);
-        elt->data=NULL;
-        free(elt);
-    }
+    str_list_deinit(list);
+    free(list);
 }
diff --git a/libopkg/str_list.h b/libopkg/str_list.h
index b187a06..4f62fe7 100644
--- a/libopkg/str_list.h
+++ b/libopkg/str_list.h
@@ -34,8 +34,8 @@ void str_list_deinit(str_list_t *list);
 int str_list_append(str_list_t *list, char *data);
 int str_list_push(str_list_t *list, char *data);
 str_list_elt_t *str_list_pop(str_list_t *list);
-str_list_elt_t *str_list_remove(str_list_t *list, str_list_elt_t **iter);
-char *str_list_remove_elt(str_list_t *list, const char *target_str);
+void str_list_remove(str_list_t *list, str_list_elt_t **iter);
+void str_list_remove_elt(str_list_t *list, const char *target_str);
 
 str_list_elt_t *str_list_first(str_list_t *list);
 str_list_elt_t *str_list_prev(str_list_t *list, str_list_elt_t *node);