lower case direcotry(no code changed)

Signed-off-by: Nikola Pajkovsky <npajkovs@redhat.com>

1 files changed, 463 insertions, 0 deletions

diff --git a/src/daemon/PluginManager.cpp b/src/daemon/PluginManager.cpp
new file mode 100644
index 00000000..4f64ed00
--- /dev/null
+++ b/src/daemon/PluginManager.cpp
@@ -0,0 +1,463 @@
+/*
+    PluginManager.cpp
+
+    Copyright (C) 2009  Zdenek Prikryl (zprikryl@redhat.com)
+    Copyright (C) 2009  RedHat inc.
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+*/
+#include <dlfcn.h>
+#include "abrtlib.h"
+#include "abrt_exception.h"
+#include "comm_layer_inner.h"
+#include "Polkit.h"
+#include "PluginManager.h"
+
+using namespace std;
+
+
+/**
+ * CLoadedModule class. A class which contains a loaded plugin.
+ */
+class CLoadedModule
+{
+    private:
+        /* dlopen'ed library */
+        void *m_pHandle;
+        const plugin_info_t *m_pPluginInfo;
+        CPlugin* (*m_pFnPluginNew)();
+
+    public:
+        CLoadedModule(void *handle, const char *mod_name);
+        ~CLoadedModule()             { dlclose(m_pHandle); }
+        int GetMagicNumber()         { return m_pPluginInfo->m_nMagicNumber; }
+        const char *GetVersion()     { return m_pPluginInfo->m_sVersion; }
+        const char *GetName()        { return m_pPluginInfo->m_sName; }
+        const char *GetDescription() { return m_pPluginInfo->m_sDescription; }
+        const char *GetEmail()       { return m_pPluginInfo->m_sEmail; }
+        const char *GetWWW()         { return m_pPluginInfo->m_sWWW; }
+        const char *GetGTKBuilder()  { return m_pPluginInfo->m_sGTKBuilder; }
+        plugin_type_t GetType()      { return m_pPluginInfo->m_Type; }
+        CPlugin *PluginNew()         { return m_pFnPluginNew(); }
+};
+CLoadedModule::CLoadedModule(void *handle, const char *mod_name)
+{
+    m_pHandle = handle;
+    /* All errors are fatal */
+#define LOADSYM(fp, handle, name) \
+    do { \
+        fp = (typeof(fp)) (dlsym(handle, name)); \
+        if (!fp) \
+            error_msg_and_die("'%s' has no %s entry", mod_name, name); \
+    } while (0)
+
+    LOADSYM(m_pPluginInfo, handle, "plugin_info");
+    LOADSYM(m_pFnPluginNew, handle, "plugin_new");
+#undef LOADSYM
+}
+
+
+/**
+ * Text representation of plugin types.
+ */
+static const char *const plugin_type_str[] = {
+    "Analyzer",
+    "Action",
+    "Reporter",
+    "Database"
+};
+
+
+/**
+ * A function. It saves settings. On success it returns true, otherwise returns false.
+ * @param path A path of config file.
+ * @param settings Plugin's settings.
+ * @return if it success it returns true, otherwise it returns false.
+ */
+static bool SavePluginSettings(const char *pPath, const map_plugin_settings_t& pSettings)
+{
+    FILE* fOut = fopen(pPath, "w");
+    if (fOut)
+    {
+        fprintf(fOut, "# Settings were written by abrt\n");
+        map_plugin_settings_t::const_iterator it = pSettings.begin();
+        for (; it != pSettings.end(); it++)
+        {
+            fprintf(fOut, "%s = %s\n", it->first.c_str(), it->second.c_str());
+        }
+        fclose(fOut);
+        return true;
+    }
+    return false;
+}
+
+
+CPluginManager::CPluginManager()
+{}
+
+CPluginManager::~CPluginManager()
+{}
+
+void CPluginManager::LoadPlugins()
+{
+    DIR *dir = opendir(PLUGINS_LIB_DIR);
+    if (dir != NULL)
+    {
+        struct dirent *dent;
+        while ((dent = readdir(dir)) != NULL)
+        {
+            if (!is_regular_file(dent, PLUGINS_LIB_DIR))
+                continue;
+            char *ext = strrchr(dent->d_name, '.');
+            if (!ext || strcmp(ext + 1, PLUGINS_LIB_EXTENSION) != 0)
+                continue;
+            *ext = '\0';
+            if (strncmp(dent->d_name, PLUGINS_LIB_PREFIX, sizeof(PLUGINS_LIB_PREFIX)-1) != 0)
+                continue;
+            LoadPlugin(dent->d_name + sizeof(PLUGINS_LIB_PREFIX)-1, /*enabled_only:*/ true);
+        }
+        closedir(dir);
+    }
+}
+
+void CPluginManager::UnLoadPlugins()
+{
+    map_loaded_module_t::iterator it_module;
+    while ((it_module = m_mapLoadedModules.begin()) != m_mapLoadedModules.end())
+    {
+        UnLoadPlugin(it_module->first.c_str());
+    }
+}
+
+CPlugin* CPluginManager::LoadPlugin(const char *pName, bool enabled_only)
+{
+    map_plugin_t::iterator it_plugin = m_mapPlugins.find(pName);
+    if (it_plugin != m_mapPlugins.end())
+    {
+        return it_plugin->second; /* ok */
+    }
+
+    map_string_t plugin_info;
+    plugin_info["Name"] = pName;
+
+    const char *conf_name = pName;
+    if (strncmp(pName, "Kerneloops", sizeof("Kerneloops")-1) == 0)
+    {
+        /* Kerneloops{,Scanner,Reporter} share the same .conf file */
+        conf_name = "Kerneloops";
+    }
+    map_plugin_settings_t pluginSettings;
+    string conf_fullname = ssprintf(PLUGINS_CONF_DIR"/%s."PLUGINS_CONF_EXTENSION, conf_name);
+    LoadPluginSettings(conf_fullname.c_str(), pluginSettings);
+    m_map_plugin_settings[pName] = pluginSettings;
+    /* If settings are empty, most likely .conf file does not exist.
+     * Don't mislead the user: */
+    VERB3 if (!pluginSettings.empty()) log("Loaded %s.conf", conf_name);
+
+    if (enabled_only)
+    {
+        map_plugin_settings_t::iterator it = pluginSettings.find("Enabled");
+        if (it == pluginSettings.end() || !string_to_bool(it->second.c_str()))
+        {
+            plugin_info["Enabled"] = "no";
+            string empty;
+            plugin_info["Type"] = empty;
+            plugin_info["Version"] = empty;
+            plugin_info["Description"] = empty;
+            plugin_info["Email"] = empty;
+            plugin_info["WWW"] = empty;
+            plugin_info["GTKBuilder"] = empty;
+            m_map_plugin_info[pName] = plugin_info;
+            VERB3 log("Plugin %s: 'Enabled' is not set, not loading it (yet)", pName);
+            return NULL; /* error */
+        }
+    }
+
+    string libPath = ssprintf(PLUGINS_LIB_DIR"/"PLUGINS_LIB_PREFIX"%s."PLUGINS_LIB_EXTENSION, pName);
+    void *handle = dlopen(libPath.c_str(), RTLD_NOW);
+    if (!handle)
+    {
+        error_msg("Can't load '%s': %s", libPath.c_str(), dlerror());
+        return NULL; /* error */
+    }
+    CLoadedModule *module = new CLoadedModule(handle, pName);
+    if (module->GetMagicNumber() != PLUGINS_MAGIC_NUMBER
+     || module->GetType() < 0
+     || module->GetType() > MAX_PLUGIN_TYPE
+    ) {
+        error_msg("Can't load non-compatible plugin %s: magic %d != %d or type %d is not in [0,%d]",
+                pName,
+                module->GetMagicNumber(), PLUGINS_MAGIC_NUMBER,
+                module->GetType(), MAX_PLUGIN_TYPE);
+        delete module;
+        return NULL; /* error */
+    }
+    VERB3 log("Loaded plugin %s v.%s", pName, module->GetVersion());
+
+    CPlugin *plugin = NULL;
+    try
+    {
+        plugin = module->PluginNew();
+        plugin->Init();
+        plugin->SetSettings(pluginSettings);
+    }
+    catch (CABRTException& e)
+    {
+        error_msg("Can't initialize plugin %s: %s",
+                pName,
+                e.what()
+        );
+        delete plugin;
+        delete module;
+        return NULL; /* error */
+    }
+
+    plugin_info["Enabled"] = "yes";
+    plugin_info["Type"] = plugin_type_str[module->GetType()];
+    //plugin_info["Name"] = module->GetName();
+    plugin_info["Version"] = module->GetVersion();
+    plugin_info["Description"] = module->GetDescription();
+    plugin_info["Email"] = module->GetEmail();
+    plugin_info["WWW"] = module->GetWWW();
+    plugin_info["GTKBuilder"] = module->GetGTKBuilder();
+
+    m_map_plugin_info[pName] = plugin_info;
+    m_mapLoadedModules[pName] = module;
+    m_mapPlugins[pName] = plugin;
+    log("Registered %s plugin '%s'", plugin_type_str[module->GetType()], pName);
+    return plugin; /* ok */
+}
+
+void CPluginManager::UnLoadPlugin(const char *pName)
+{
+    map_loaded_module_t::iterator it_module = m_mapLoadedModules.find(pName);
+    if (it_module != m_mapLoadedModules.end())
+    {
+        map_plugin_t::iterator it_plugin = m_mapPlugins.find(pName);
+        if (it_plugin != m_mapPlugins.end()) /* always true */
+        {
+            it_plugin->second->DeInit();
+            delete it_plugin->second;
+            m_mapPlugins.erase(it_plugin);
+        }
+        log("UnRegistered %s plugin %s", plugin_type_str[it_module->second->GetType()], pName);
+        delete it_module->second;
+        m_mapLoadedModules.erase(it_module);
+    }
+}
+
+#ifdef PLUGIN_DYNAMIC_LOAD_UNLOAD
+void CPluginManager::RegisterPluginDBUS(const char *pName, const char *pDBUSSender)
+{
+    int polkit_result = polkit_check_authorization(pDBUSSender,
+                           "org.fedoraproject.abrt.change-daemon-settings");
+    if (polkit_result == PolkitYes)
+    {
+//TODO: report success/failure
+        LoadPlugin(pName);
+    } else
+    {
+        log("User %s not authorized, returned %d", pDBUSSender, polkit_result);
+    }
+}
+
+void CPluginManager::UnRegisterPluginDBUS(const char *pName, const char *pDBUSSender)
+{
+    int polkit_result = polkit_check_authorization(pDBUSSender,
+                           "org.fedoraproject.abrt.change-daemon-settings");
+    if (polkit_result == PolkitYes)
+    {
+        UnLoadPlugin(pName);
+    } else
+    {
+        log("user %s not authorized, returned %d", pDBUSSender, polkit_result);
+    }
+}
+#endif
+
+CAnalyzer* CPluginManager::GetAnalyzer(const char *pName)
+{
+    CPlugin *plugin = LoadPlugin(pName);
+    if (!plugin)
+    {
+        error_msg("Plugin '%s' is not registered", pName);
+        return NULL;
+    }
+    if (m_mapLoadedModules[pName]->GetType() != ANALYZER)
+    {
+        error_msg("Plugin '%s' is not an analyzer plugin", pName);
+        return NULL;
+    }
+    return (CAnalyzer*)plugin;
+}
+
+CReporter* CPluginManager::GetReporter(const char *pName)
+{
+    CPlugin *plugin = LoadPlugin(pName);
+    if (!plugin)
+    {
+        error_msg("Plugin '%s' is not registered", pName);
+        return NULL;
+    }
+    if (m_mapLoadedModules[pName]->GetType() != REPORTER)
+    {
+        error_msg("Plugin '%s' is not a reporter plugin", pName);
+        return NULL;
+    }
+    return (CReporter*)plugin;
+}
+
+CAction* CPluginManager::GetAction(const char *pName, bool silent)
+{
+    CPlugin *plugin = LoadPlugin(pName);
+    if (!plugin)
+    {
+        error_msg("Plugin '%s' is not registered", pName);
+        return NULL;
+    }
+    if (m_mapLoadedModules[pName]->GetType() != ACTION)
+    {
+        if (!silent)
+            error_msg("Plugin '%s' is not an action plugin", pName);
+        return NULL;
+    }
+    return (CAction*)plugin;
+}
+
+CDatabase* CPluginManager::GetDatabase(const char *pName)
+{
+    CPlugin *plugin = LoadPlugin(pName);
+    if (!plugin)
+    {
+        throw CABRTException(EXCEP_PLUGIN, "Plugin '%s' is not registered", pName);
+    }
+    if (m_mapLoadedModules[pName]->GetType() != DATABASE)
+    {
+        throw CABRTException(EXCEP_PLUGIN, "Plugin '%s' is not a database plugin", pName);
+    }
+    return (CDatabase*)plugin;
+}
+
+plugin_type_t CPluginManager::GetPluginType(const char *pName)
+{
+    CPlugin *plugin = LoadPlugin(pName);
+    if (!plugin)
+    {
+        throw CABRTException(EXCEP_PLUGIN, "Plugin '%s' is not registered", pName);
+    }
+    map_loaded_module_t::iterator it_module = m_mapLoadedModules.find(pName);
+    return it_module->second->GetType();
+}
+
+void CPluginManager::SetPluginSettings(const char *pName,
+                                       const char *pUID,
+                                       const map_plugin_settings_t& pSettings)
+{
+    map_loaded_module_t::iterator it_module = m_mapLoadedModules.find(pName);
+    if (it_module == m_mapLoadedModules.end())
+    {
+        return;
+    }
+    map_plugin_t::iterator it_plugin = m_mapPlugins.find(pName);
+    if (it_plugin == m_mapPlugins.end())
+    {
+        return;
+    }
+    it_plugin->second->SetSettings(pSettings);
+
+#if 0 /* Writing to ~user/.abrt/ is bad wrt security */
+    if (it_module->second->GetType() != REPORTER)
+    {
+        return;
+    }
+
+    const char *home = get_home_dir(xatoi_u(pUID.c_str()));
+    if (home == NULL || strlen(home) == 0)
+        return;
+
+    string confDir = home + "/.abrt";
+    string confPath = confDir + "/" + pName + "."PLUGINS_CONF_EXTENSION;
+    uid_t uid = xatoi_u(pUID.c_str());
+    struct passwd* pw = getpwuid(uid);
+    gid_t gid = pw ? pw->pw_gid : uid;
+
+    struct stat buf;
+    if (stat(confDir.c_str(), &buf) != 0)
+    {
+        if (mkdir(confDir.c_str(), 0700) == -1)
+        {
+            perror_msg("Can't create dir '%s'", confDir.c_str());
+            return;
+        }
+        if (chmod(confDir.c_str(), 0700) == -1)
+        {
+            perror_msg("Can't change mod of dir '%s'", confDir.c_str());
+            return;
+        }
+        if (chown(confDir.c_str(), uid, gid) == -1)
+        {
+            perror_msg("Can't change '%s' ownership to %lu:%lu", confPath.c_str(), (long)uid, (long)gid);
+            return;
+        }
+    }
+    else if (!S_ISDIR(buf.st_mode))
+    {
+        perror_msg("'%s' is not a directory", confDir.c_str());
+        return;
+    }
+
+    /** we don't want to save it from daemon if it's running under root
+    but wi might get back to this once we make the daemon to not run
+    with root privileges
+    */
+    /*
+    SavePluginSettings(confPath, pSettings);
+    if (chown(confPath.c_str(), uid, gid) == -1)
+    {
+        perror_msg("Can't change '%s' ownership to %lu:%lu", confPath.c_str(), (long)uid, (long)gid);
+        return;
+    }
+    */
+#endif
+}
+
+map_plugin_settings_t CPluginManager::GetPluginSettings(const char *pName)
+{
+    map_plugin_settings_t ret;
+
+    map_loaded_module_t::iterator it_module = m_mapLoadedModules.find(pName);
+    if (it_module != m_mapLoadedModules.end())
+    {
+        map_plugin_t::iterator it_plugin = m_mapPlugins.find(pName);
+        if (it_plugin != m_mapPlugins.end())
+        {
+            VERB3 log("Returning settings for loaded plugin %s", pName);
+            ret = it_plugin->second->GetSettings();
+            return ret;
+        }
+    }
+    /* else: module is not loaded */
+    map_map_string_t::iterator it_settings = m_map_plugin_settings.find(pName);
+    if (it_settings != m_map_plugin_settings.end())
+    {
+        /* but it exists, its settings are available nevertheless */
+        VERB3 log("Returning settings for non-loaded plugin %s", pName);
+        ret = it_settings->second;
+        return ret;
+    }
+
+    VERB3 log("Request for settings of unknown plugin %s, returning null result", pName);
+    return ret;
+}