Implement here-document syntax in configuration file.

Here-document is supported for ip-list and trusted-ip statements.

* doc/ping903.conf.5: Document the here-document syntax.
* NEWS: Likewise.
* examples/inspect: Mention that the created output is a valid
configuration file.
* src/config.c: Support for here-document.
* src/defs.h: Mark printf-like functions as such.
* src/ping903.h (CF_HEREDOC_OPCODE): New data type.
(cf_callback_arg): Add heredoc member.
(STMT_T_HEREDOC): New statement type.
* src/remoteip.c (cf_trusted_ip_heredoc): New function.

* src/ping903.c: Fix format strings and unused variables.
* src/ping903q.c: Likewise.
* src/pinger.c: Likewise.

1 files changed, 6 insertions, 3 deletions

diff --git a/src/defs.h b/src/defs.h
index 85918ef..1f7c7f3 100644
--- a/src/defs.h
+++ b/src/defs.h
@@ -51,10 +51,13 @@ void *e2nrealloc(void *p, size_t *pn, size_t s);
 
 extern char *progname;
 
+#define ATTR_PRINTFLIKE(fmt,narg)				\
+	__attribute__ ((__format__ (__printf__, fmt, narg)))
+
 void vlogger(int prio, char const *fmt, va_list ap);
-void fatal(char const *fmt, ...);
-void error(char const *fmt, ...);
-void info(char const *fmt, ...);
+void fatal(char const *fmt, ...) ATTR_PRINTFLIKE(1,2);
+void error(char const *fmt, ...) ATTR_PRINTFLIKE(1,2);
+void info(char const *fmt, ...) ATTR_PRINTFLIKE(1,2);
 void syslog_enable(void);
 void set_progname(char const *arg);
 int set_log_facility(char const *arg);