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Update storage code to allow plugins

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Add naive plugin support to the storage code, it will
load plugins from $(libdir)/fprintd/modules, given the configuration
from /etc/fprintd.conf.
This commit is contained in:
Bastien Nocera
2008-10-29 18:34:38 +00:00
committed by Daniel Drake
parent 96b444ed3e
commit bd2debc01e
8 changed files with 110 additions and 71 deletions
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91
src/main.c
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@ -27,8 +27,11 @@
#include <glib/gi18n.h>
#include <libfprint/fprint.h>
#include <glib-object.h>
#include <gmodule.h>
#include "fprintd.h"
#include "storage.h"
#include "file_storage.h"
DBusGConnection *fprintd_dbus_conn = NULL;
static gboolean g_fatal_warnings = FALSE;
@ -200,6 +203,88 @@ static int setup_pollfds(void)
return 0;
}
static void
set_storage_file (void)
{
store.init = &file_storage_init;
store.deinit = &file_storage_deinit;
store.print_data_save = &file_storage_print_data_save;
store.print_data_load = &file_storage_print_data_load;
store.print_data_delete = &file_storage_print_data_delete;
store.discover_prints = &file_storage_discover_prints;
}
static gboolean
load_storage_module (const char *module_name)
{
GModule *module;
char *filename;
filename = g_module_build_path (PLUGINDIR, module_name);
module = g_module_open (filename, 0);
g_free (filename);
if (module == NULL)
return FALSE;
if (!g_module_symbol (module, "init", (gpointer *) &store.init) ||
!g_module_symbol (module, "deinit", (gpointer *) &store.deinit) ||
!g_module_symbol (module, "print_data_save", (gpointer *) &store.print_data_save) ||
!g_module_symbol (module, "print_data_load", (gpointer *) &store.print_data_load) ||
!g_module_symbol (module, "print_data_delete", (gpointer *) &store.print_data_delete) ||
!g_module_symbol (module, "discover_prints", (gpointer *) &store.discover_prints)) {
g_module_close (module);
return FALSE;
}
g_module_make_resident (module);
return TRUE;
}
static gboolean
load_conf (void)
{
GKeyFile *file;
char *filename;
char *module_name;
GError *error = NULL;
gboolean ret;
filename = g_build_filename (SYSCONFDIR, "fprintd.conf", NULL);
file = g_key_file_new ();
if (!g_key_file_load_from_file (file, filename, G_KEY_FILE_NONE, &error)) {
g_print ("Could not open fprintd.conf: %s\n", error->message);
goto bail;
}
g_free (filename);
filename = NULL;
module_name = g_key_file_get_string (file, "storage", "type", &error);
if (module_name == NULL)
goto bail;
g_key_file_free (file);
if (g_str_equal (module_name, "file")) {
g_free (module_name);
set_storage_file ();
return TRUE;
}
ret = load_storage_module (module_name);
g_free (module_name);
return ret;
bail:
g_key_file_free (file);
g_free (filename);
g_error_free (error);
return FALSE;
}
static const GOptionEntry entries[] = {
{"g-fatal-warnings", 0, 0, G_OPTION_ARG_NONE, &g_fatal_warnings, "Make all warnings fatal", NULL},
{ NULL }
@ -237,6 +322,12 @@ int main(int argc, char **argv)
g_log_set_always_fatal (fatal_mask);
}
/* Load the configuration file,
* and the default storage plugin */
if (!load_conf())
set_storage_file ();
store.init ();
r = fp_init();
if (r < 0) {
g_error("fprint init failed with error %d\n", r);