add log macros for plugins

[src/app-framework-binder.git] / include / afb / afb-plugin.h

diff --git a/include/afb/afb-plugin.h b/include/afb/afb-plugin.h
index de1ab41..6f5cd08 100644 (file)
--- a/include/afb/afb-plugin.h
+++ b/include/afb/afb-plugin.h
@@ -17,6 +17,27 @@
 
 #pragma once
 
+#include <stdarg.h>
+
+/*****************************************************************************
+ * This files is the main file to include for writing plugins dedicated to
+ *
+ *                      AFB-DAEMON
+ *
+ * Functions of plugins of afb-daemon are accessible by authorized clients
+ * through the apis module of afb-daemon.
+ *
+ * A plugin is a shared library. This shared library must have at least one
+ * exported symbol for being registered in afb-daemon.
+ * For the current version of afb-daemon, the function exported MUST be named
+ *
+ *                  pluginAfbV1Register
+ */
+
+/*
+ * Some function of the library are exported to afb-daemon.
+ */
+
 #include <afb/afb-req-itf.h>
 #include <afb/afb-event-sender-itf.h>
 
@@ -40,7 +61,33 @@ enum AFB_session_v1
        AFB_SESSION_CLOSE = 2,  /* closes the session after authentification */
        AFB_SESSION_RENEW = 4,  /* refreshes the token after authentification */
        AFB_SESSION_CHECK = 8,  /* enforce authentification */
-       AFB_SESSION_MASK = 15   /* convenient mask used internally, bit-or of the previous masks */
+
+       AFB_SESSION_LOA_GE = 16, /* check that the LOA is greater or equal to the given value */
+       AFB_SESSION_LOA_LE = 32, /* check that the LOA is lesser or equal to the given value */
+       AFB_SESSION_LOA_EQ = 48, /* check that the LOA is equal to the given value */
+
+       AFB_SESSION_LOA_SHIFT = 6, /* shift for LOA */
+       AFB_SESSION_LOA_MASK = 3,  /* mask for LOA */
+
+       AFB_SESSION_LOA_0 = 0,   /* value for LOA of 0 */
+       AFB_SESSION_LOA_1 = 64,  /* value for LOA of 1 */
+       AFB_SESSION_LOA_2 = 128, /* value for LOA of 2 */
+       AFB_SESSION_LOA_3 = 192, /* value for LOA of 3 */
+
+       AFB_SESSION_LOA_LE_0 = AFB_SESSION_LOA_LE | AFB_SESSION_LOA_0, /* check LOA <= 0 */
+       AFB_SESSION_LOA_LE_1 = AFB_SESSION_LOA_LE | AFB_SESSION_LOA_1, /* check LOA <= 1 */
+       AFB_SESSION_LOA_LE_2 = AFB_SESSION_LOA_LE | AFB_SESSION_LOA_2, /* check LOA <= 2 */
+       AFB_SESSION_LOA_LE_3 = AFB_SESSION_LOA_LE | AFB_SESSION_LOA_3, /* check LOA <= 3 */
+
+       AFB_SESSION_LOA_GE_0 = AFB_SESSION_LOA_GE | AFB_SESSION_LOA_0, /* check LOA >= 0 */
+       AFB_SESSION_LOA_GE_1 = AFB_SESSION_LOA_GE | AFB_SESSION_LOA_1, /* check LOA >= 1 */
+       AFB_SESSION_LOA_GE_2 = AFB_SESSION_LOA_GE | AFB_SESSION_LOA_2, /* check LOA >= 2 */
+       AFB_SESSION_LOA_GE_3 = AFB_SESSION_LOA_GE | AFB_SESSION_LOA_3, /* check LOA >= 3 */
+
+       AFB_SESSION_LOA_EQ_0 = AFB_SESSION_LOA_EQ | AFB_SESSION_LOA_0, /* check LOA == 0 */
+       AFB_SESSION_LOA_EQ_1 = AFB_SESSION_LOA_EQ | AFB_SESSION_LOA_1, /* check LOA == 1 */
+       AFB_SESSION_LOA_EQ_2 = AFB_SESSION_LOA_EQ | AFB_SESSION_LOA_2, /* check LOA == 2 */
+       AFB_SESSION_LOA_EQ_3 = AFB_SESSION_LOA_EQ | AFB_SESSION_LOA_3  /* check LOA == 3 */
 };
 
 /*
@@ -97,6 +144,7 @@ struct afb_daemon_itf {
        struct sd_event *(*get_event_loop)(void *closure);      /* get the common systemd's event loop */
        struct sd_bus *(*get_user_bus)(void *closure);          /* get the common systemd's user d-bus */
        struct sd_bus *(*get_system_bus)(void *closure);        /* get the common systemd's system d-bus */
+       void (*vverbose)(void*closure, int level, const char *file, int line, const char *fmt, va_list args);
 };
 
 /*
@@ -119,7 +167,7 @@ struct AFB_interface
 };
 
 /*
- * The function for registering the plugin to AFB
+ * Function for registering the plugin
  */
 extern const struct AFB_plugin *pluginAfbV1Register (const struct AFB_interface *interface);
 
@@ -159,4 +207,24 @@ static inline struct sd_bus *afb_daemon_get_system_bus(struct afb_daemon daemon)
        return daemon.itf->get_system_bus(daemon.closure);
 }
 
+/*
+ * Send a message described by 'fmt' and following parameters
+ * to the journal for the verbosity 'level'.
+ * 'file' and 'line' are indicators of position of the code in source files.
+ * 'daemon' MUST be the daemon given in interface when activating the plugin.
+ */
+static inline void afb_daemon_verbose(struct afb_daemon daemon, int level, const char *file, int line, const char *fmt, ...)
+{
+       va_list args;
+       va_start(args, fmt);
+       return daemon.itf->vverbose(daemon.closure, level, file, line, fmt, args);
+       va_end(args);
+}
 
+#if !defined(NO_PLUGIN_VERBOSE_MACRO)
+# define ERROR(itf,...)   do{if(itf->verbosity>=0)afb_daemon_verbose(itf->daemon,3,__FILE__,__LINE__,__VA_ARGS__);}while(0)
+# define WARNING(itf,...) do{if(itf->verbosity>=1)afb_daemon_verbose(itf->daemon,4,__FILE__,__LINE__,__VA_ARGS__);}while(0)
+# define NOTICE(itf,...)  do{if(itf->verbosity>=1)afb_daemon_verbose(itf->daemon,5,__FILE__,__LINE__,__VA_ARGS__);}while(0)
+# define INFO(itf,...)    do{if(itf->verbosity>=2)afb_daemon_verbose(itf->daemon,6,__FILE__,__LINE__,__VA_ARGS__);}while(0)
+# define DEBUG(itf,...)   do{if(itf->verbosity>=3)afb_daemon_verbose(itf->daemon,7,__FILE__,__LINE__,__VA_ARGS__);}while(0)
+#endif