Add checks on the plugin version and the plugin license. Currently

     only implemented for FD plugins.

git-svn-id: https://bacula.svn.sourceforge.net/svnroot/bacula/trunk@8626 91ce42f0-d328-0410-95d8-f526ca767f89

diff --git a/bacula/src/dird/dir_plugins.c b/bacula/src/dird/dir_plugins.c
index a794e5d803aadf39762575c358fe058590e4c5cb..f6e904fbe3d9c9e7648130727839dbbf4d1c9633 100644 (file)
--- a/bacula/src/dird/dir_plugins.c
+++ b/bacula/src/dird/dir_plugins.c
@@ -116,7 +116,7 @@ void load_dir_plugins(const char *plugin_dir)
    }
 
    plugin_list = New(alist(10, not_owned_by_alist));
-   load_plugins((void *)&binfo, (void *)&bfuncs, plugin_dir, plugin_type);
+   load_plugins((void *)&binfo, (void *)&bfuncs, plugin_dir, plugin_type, NULL);
    dbg_plugin_add_hook(dump_dir_plugin);
 }
 

diff --git a/bacula/src/dird/inc_conf.c b/bacula/src/dird/inc_conf.c
index 5df66b1ac029cbc66ae314275b8c7ad5acf6eb06..ef15d3f2dd0a6e056e22e9a8af32b2fd773e612e 100644 (file)
--- a/bacula/src/dird/inc_conf.c
+++ b/bacula/src/dird/inc_conf.c
@@ -1,7 +1,7 @@
 /*
    Bacula® - The Network Backup Solution
 
-   Copyright (C) 2000-2008 Free Software Foundation Europe e.V.
+   Copyright (C) 2000-2009 Free Software Foundation Europe e.V.
 
    The main author of Bacula is Kern Sibbald, with contributions from
    many others, a complete list can be found in the file AUTHORS.

diff --git a/bacula/src/filed/fd_plugins.c b/bacula/src/filed/fd_plugins.c
index 27c4c2038aac32497815698bfe3be7a341428320..67943bbf722c04f4148df43c817e1690a4a0e77e 100644 (file)
--- a/bacula/src/filed/fd_plugins.c
+++ b/bacula/src/filed/fd_plugins.c
@@ -62,6 +62,7 @@ static bRC baculaDebugMsg(bpContext *ctx, const char *file, int line,
 static void *baculaMalloc(bpContext *ctx, const char *file, int line,
               size_t size);
 static void baculaFree(bpContext *ctx, const char *file, int line, void *mem);
+static bool is_plugin_compatible(Plugin *plugin);
 
 /*
  * These will be plugged into the global pointer structure for
@@ -435,6 +436,7 @@ bail_out:
 
 /*
  * Tell the plugin to create the file.  Return values are
+ *   This is called only during Restore
  *
  *  CF_ERROR    -- error
  *  CF_SKIP     -- skip processing this file
@@ -509,6 +511,7 @@ int plugin_create_file(JCR *jcr, ATTR *attr, BFILE *bfd, int replace)
  * Reset the file attributes after all file I/O is done -- this allows
  *  the previous access time/dates to be set properly, and it also allows
  *  us to properly set directory permissions.
+ *  Not currently Implemented.
  */
 bool plugin_set_attributes(JCR *jcr, ATTR *attr, BFILE *ofd)
 {
@@ -520,12 +523,15 @@ bool plugin_set_attributes(JCR *jcr, ATTR *attr, BFILE *ofd)
    return true;
 }
 
+/*
+ * Print to file the plugin info.
+ */
 void dump_fd_plugin(Plugin *plugin, FILE *fp)
 {
    if (!plugin) {
       return ;
    }
-   pInfo *info = (pInfo *) plugin->pinfo;
+   pInfo *info = (pInfo *)plugin->pinfo;
    fprintf(fp, "\tversion=%d\n", info->version);
    fprintf(fp, "\tdate=%s\n", NPRTB(info->plugin_date));
    fprintf(fp, "\tmagic=%s\n", NPRTB(info->plugin_magic));
@@ -549,7 +555,8 @@ void load_fd_plugins(const char *plugin_dir)
    }
 
    plugin_list = New(alist(10, not_owned_by_alist));
-   if (!load_plugins((void *)&binfo, (void *)&bfuncs, plugin_dir, plugin_type)) {
+   if (!load_plugins((void *)&binfo, (void *)&bfuncs, plugin_dir, plugin_type,
+                     is_plugin_compatible)) {
       /* Either none found, or some error */
       if (plugin_list->size() == 0) {
          delete plugin_list;
@@ -565,15 +572,58 @@ void load_fd_plugins(const char *plugin_dir)
    plugin_bread  = my_plugin_bread;
    plugin_bwrite = my_plugin_bwrite;
    plugin_blseek = my_plugin_blseek;
+
+   /* 
+    * Verify that the plugin is acceptable, and print information
+    *  about it.
+    */
    foreach_alist(plugin, plugin_list) {
       Jmsg(NULL, M_INFO, 0, _("Loaded plugin: %s\n"), plugin->file);
       Dmsg1(dbglvl, "Loaded plugin: %s\n", plugin->file);
-
    }
 
    dbg_plugin_add_hook(dump_fd_plugin);
 }
 
+/*
+ * Check if a plugin is compatible.  Called by the load_plugin function
+ *  to allow us to verify the plugin.
+ */
+static bool is_plugin_compatible(Plugin *plugin)
+{
+   pInfo *info = (pInfo *)plugin->pinfo;
+   Dmsg0(50, "is_plugin_compatible called\n");
+   if (debug_level >= 50) {
+      dump_fd_plugin(plugin, stdin);
+   }
+   if (strcmp(info->plugin_magic, FD_PLUGIN_MAGIC) != 0) {
+      Jmsg(NULL, M_ERROR, 0, _("Plugin magic wrong. Plugin=%s wanted=%s got=%s\n"),
+           plugin->file, FD_PLUGIN_MAGIC, info->plugin_magic);
+      Dmsg3(50, "Plugin magic wrong. Plugin=%s wanted=%s got=%s\n",
+           plugin->file, FD_PLUGIN_MAGIC, info->plugin_magic);
+
+      return false;
+   }
+   if (info->version != FD_PLUGIN_INTERFACE_VERSION) {
+      Jmsg(NULL, M_ERROR, 0, _("Plugin version incorrect. Plugin=%s wanted=%d got=%d\n"),
+           plugin->file, FD_PLUGIN_INTERFACE_VERSION, info->version);
+      Dmsg3(50, "Plugin version incorrect. Plugin=%s wanted=%d got=%d\n",
+           plugin->file, FD_PLUGIN_INTERFACE_VERSION, info->version);
+      return false;
+   }
+   if (strcmp(info->plugin_license, "Bacula GPLv2") != 0 &&
+       strcmp(info->plugin_license, "GPLv2") != 0) {
+      Jmsg(NULL, M_ERROR, 0, _("Plugin license incompatible. Plugin=%s license=%s\n"),
+           plugin->file, info->plugin_license);
+      Dmsg2(50, "Plugin license incompatible. Plugin=%s license=%s\n",
+           plugin->file, info->plugin_license);
+      return false;
+   }
+      
+   return true;
+}
+
+
 /*
  * Create a new instance of each plugin for this Job
  *   Note, plugin_list can exist but jcr->plugin_ctx_list can

diff --git a/bacula/src/lib/plugins.c b/bacula/src/lib/plugins.c
index 0f799a590245d58bba9a4183c7281d3fbbfb9104..739a50489900668e4d91caa93fc77ca04449a22f 100644 (file)
--- a/bacula/src/lib/plugins.c
+++ b/bacula/src/lib/plugins.c
@@ -70,7 +70,8 @@ Plugin *new_plugin()
 /*
  * Load all the plugins in the specified directory.
  */
-bool load_plugins(void *binfo, void *bfuncs, const char *plugin_dir, const char *type)
+bool load_plugins(void *binfo, void *bfuncs, const char *plugin_dir, 
+        const char *type, bool is_plugin_compatible(Plugin *plugin))
 {
    bool found = false;
    t_loadPlugin loadPlugin;
@@ -167,6 +168,11 @@ bool load_plugins(void *binfo, void *bfuncs, const char *plugin_dir, const char
       if (loadPlugin(binfo, bfuncs, &plugin->pinfo, &plugin->pfuncs) != bRC_OK) {
          goto get_out;
       }
+      if (!is_plugin_compatible) {
+         Dmsg0(50, "Plugin compatibility pointer not set.\n");   
+      } else if (!is_plugin_compatible(plugin)) {
+         goto get_out;
+      }
 
       found = true;                /* found a plugin */
       plugin_list->append(plugin);
@@ -174,6 +180,18 @@ bool load_plugins(void *binfo, void *bfuncs, const char *plugin_dir, const char
 
 get_out:
    if (!found && plugin) {
+      if (plugin->file) {
+         Dmsg1(50, "Got plugin=%s but not accepted.\n", plugin->file);
+      }
+      if (plugin->unloadPlugin) {
+         plugin->unloadPlugin();
+      }
+      if (plugin->pHandle) {
+         dlclose(plugin->pHandle);
+      }
+      if (plugin->file) {
+         free(plugin->file);
+      }
       free(plugin);
    }
    if (entry) {

diff --git a/bacula/src/lib/plugins.h b/bacula/src/lib/plugins.h
index e7e5b41671c14ae5b5d05fddea5330e3dfd5a9ec..7e84e16cfc6285ec60cac10ed3adb6d781140aa2 100644 (file)
--- a/bacula/src/lib/plugins.h
+++ b/bacula/src/lib/plugins.h
@@ -80,7 +80,8 @@ public:
 
 /* Functions */
 extern Plugin *new_plugin();
-extern bool load_plugins(void *binfo, void *bfuncs, const char *plugin_dir, const char *type);
+extern bool load_plugins(void *binfo, void *bfuncs, const char *plugin_dir, 
+        const char *type, bool is_plugin_compatible(Plugin *plugin));
 extern void unload_plugins();
 
 /* Each daemon can register a debug hook that will be called

diff --git a/bacula/src/plugins/fd/bpipe-fd.c b/bacula/src/plugins/fd/bpipe-fd.c
index abc374a9593cce541abbdef6c4574db11e4f0c67..52521cd154639500620beba0c7ad616ff868b8d1 100644 (file)
--- a/bacula/src/plugins/fd/bpipe-fd.c
+++ b/bacula/src/plugins/fd/bpipe-fd.c
@@ -1,7 +1,7 @@
 /*
    Bacula® - The Network Backup Solution
 
-   Copyright (C) 2007-2008 Free Software Foundation Europe e.V.
+   Copyright (C) 2007-2009 Free Software Foundation Europe e.V.
 
    The main author of Bacula is Kern Sibbald, with contributions from
    many others, a complete list can be found in the file AUTHORS.
@@ -47,7 +47,7 @@ extern "C" {
 
 static const int dbglvl = 150;
 
-#define PLUGIN_LICENSE      "GPLv2"
+#define PLUGIN_LICENSE      "Bacula GPLv2"
 #define PLUGIN_AUTHOR       "Kern Sibbald"
 #define PLUGIN_DATE         "January 2008"
 #define PLUGIN_VERSION      "1"

diff --git a/bacula/src/stored/sd_plugins.c b/bacula/src/stored/sd_plugins.c
index b007032a80bb8b9a54a247fe403126df51d57902..32bbcc51ba156879faba6e1438846e1c0bb7baea 100644 (file)
--- a/bacula/src/stored/sd_plugins.c
+++ b/bacula/src/stored/sd_plugins.c
@@ -117,7 +117,7 @@ void load_sd_plugins(const char *plugin_dir)
    }
 
    plugin_list = New(alist(10, not_owned_by_alist));
-   load_plugins((void *)&binfo, (void *)&bfuncs, plugin_dir, plugin_type);
+   load_plugins((void *)&binfo, (void *)&bfuncs, plugin_dir, plugin_type, NULL);
    dbg_plugin_add_hook(dump_sd_plugin);
 }
 

diff --git a/bacula/technotes-2.5 b/bacula/technotes-2.5
index f244b89e04858384a81c09ab138480a69f9c9923..26399e62bd9d7167e807d021587a8ba92ba760d3 100644 (file)
--- a/bacula/technotes-2.5
+++ b/bacula/technotes-2.5
@@ -3,6 +3,8 @@
           
 General:
 28Mar09
+kes  Add checks on the plugin version and the plugin license. Currently
+     only implemented for FD plugins.
 kes  Add installation of /usr/share/doc/bacula-VERSION
 kes  Modify plugin checkFile to return bRC_Seen to cause file
      to remain.  Previously was true/false.