1 files changed, 236 insertions, 0 deletions
diff --git a/src/pluto/log.h b/src/pluto/log.h
new file mode 100644
index 000000000..a4eae9d1c
--- /dev/null
+++ b/src/pluto/log.h
@@ -0,0 +1,236 @@
+/* logging definitions
+ * Copyright (C) 1998-2001  D. Hugh Redelmeier.
+ *
+ * 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.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * 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.
+ *
+ * RCSID $Id: log.h,v 1.4 2005/07/11 18:33:45 as Exp $
+ */
+
+#include <freeswan.h>
+
+#define LOG_WIDTH   1024    /* roof of number of chars in log line */
+
+#ifndef PERPEERLOGDIR
+#define PERPEERLOGDIR "/var/log/pluto/peer"
+#endif
+
+/* our versions of assert: log result */
+
+#ifdef DEBUG
+
+extern void passert_fail(const char *pred_str
+    , const char *file_str, unsigned long line_no) NEVER_RETURNS;
+
+extern void pexpect_log(const char *pred_str
+			, const char *file_str, unsigned long line_no);
+
+# define impossible() passert_fail("impossible", __FILE__, __LINE__)
+
+extern void switch_fail(int n
+    , const char *file_str, unsigned long line_no) NEVER_RETURNS;
+
+# define bad_case(n) switch_fail((int) n, __FILE__, __LINE__)
+
+# define passert(pred) { \
+	if (!(pred)) \
+	    passert_fail(#pred, __FILE__, __LINE__); \
+    }
+
+# define pexpect(pred) { \
+	if (!(pred)) \
+	    pexpect_log(#pred, __FILE__, __LINE__); \
+    }
+
+/* assert that an err_t is NULL; evaluate exactly once */
+# define happy(x) { \
+	err_t ugh = x; \
+	if (ugh != NULL) \
+	    passert_fail(ugh, __FILE__, __LINE__); \
+    }
+
+#else /*!DEBUG*/
+
+# define impossible() abort()
+# define bad_case(n) abort()
+# define passert(pred)  { }	/* do nothing */
+# define happy(x)  { (void) x; }	/* evaluate non-judgementally */
+
+#endif /*!DEBUG*/
+
+
+extern bool
+    log_to_stderr,	/* should log go to stderr? */
+    log_to_syslog,	/* should log go to syslog? */
+    log_to_perpeer;     /* should log go to per-IP file? */
+
+extern const char *base_perpeer_logdir;
+
+/* maximum number of files to keep open for per-peer log files */
+#define MAX_PEERLOG_COUNT 16
+
+/* Context for logging.
+ *
+ * Global variables: must be carefully adjusted at transaction boundaries!
+ * All are to be left in RESET condition and will be checked.
+ * There are several pairs of routines to set and reset them.
+ * If the context provides a whack file descriptor, messages
+ * should be copied to it -- see whack_log()
+ */
+extern int whack_log_fd;	/* only set during whack_handle() */
+extern struct state *cur_state;	/* current state, for diagnostics */
+extern struct connection *cur_connection;	/* current connection, for diagnostics */
+extern const ip_address *cur_from;	/* source of current current message */
+extern u_int16_t cur_from_port;	/* host order */
+
+#ifdef DEBUG
+
+  extern lset_t cur_debugging;	/* current debugging level */
+
+  extern void extra_debugging(const struct connection *c);
+
+# define reset_debugging() { cur_debugging = base_debugging; }
+
+# define GLOBALS_ARE_RESET() (whack_log_fd == NULL_FD \
+    && cur_state == NULL \
+    && cur_connection == NULL \
+    && cur_from == NULL \
+    && cur_debugging == base_debugging)
+
+#else /*!DEBUG*/
+
+# define extra_debugging(c)  { }
+
+# define reset_debugging() { }
+
+# define GLOBALS_ARE_RESET() (whack_log_fd == NULL_FD \
+    && cur_state == NULL \
+    && cur_connection == NULL \
+    && cur_from == NULL)
+
+#endif /*!DEBUG*/
+
+#define reset_globals() { \
+    whack_log_fd = NULL_FD; \
+    cur_state = NULL; \
+    cur_from = NULL; \
+    reset_cur_connection(); \
+    }
+
+
+#define set_cur_connection(c) { \
+    cur_connection = (c); \
+    extra_debugging(c); \
+    }
+
+#define reset_cur_connection() { \
+    cur_connection = NULL; \
+    reset_debugging(); \
+    }
+
+
+#define set_cur_state(s) { \
+    cur_state = (s); \
+    extra_debugging((s)->st_connection); \
+    }
+
+#define reset_cur_state() { \
+    cur_state = NULL; \
+    reset_debugging(); \
+    }
+
+extern void init_log(const char *program);
+extern void close_log(void);
+extern void plog(const char *message, ...) PRINTF_LIKE(1);
+extern void exit_log(const char *message, ...) PRINTF_LIKE(1) NEVER_RETURNS;
+
+/* close of all per-peer logging */
+extern void close_peerlog(void);
+
+/* free all per-peer log resources */
+extern void perpeer_logfree(struct connection *c);
+
+
+
+/* the following routines do a dance to capture errno before it is changed
+ * A call must doubly parenthesize the argument list (no varargs macros).
+ * The first argument must be "e", the local variable that captures errno.
+ */
+#define log_errno(a) { int e = errno; log_errno_routine a; }
+extern void log_errno_routine(int e, const char *message, ...) PRINTF_LIKE(2);
+#define exit_log_errno(a) { int e = errno; exit_log_errno_routine a; }
+extern void exit_log_errno_routine(int e, const char *message, ...) PRINTF_LIKE(2) NEVER_RETURNS NEVER_RETURNS;
+
+extern void whack_log(int mess_no, const char *message, ...) PRINTF_LIKE(2);
+
+/* Log to both main log and whack log
+ * Much like log, actually, except for specifying mess_no.
+ */
+extern void loglog(int mess_no, const char *message, ...) PRINTF_LIKE(2);
+
+/* show status, usually on whack log */
+extern void show_status(bool all, const char *name);
+
+/* Build up a diagnostic in a static buffer.
+ * Although this would be a generally useful function, it is very
+ * hard to come up with a discipline that prevents different uses
+ * from interfering.  It is intended that by limiting it to building
+ * diagnostics, we will avoid this problem.
+ * Juggling is performed to allow an argument to be a previous
+ * result: the new string may safely depend on the old one.  This
+ * restriction is not checked in any way: violators will produce
+ * confusing results (without crashing!).
+ */
+extern char diag_space[LOG_WIDTH];	/* output buffer, but can be occupied at call */
+extern err_t builddiag(const char *fmt, ...) PRINTF_LIKE(1);
+
+#ifdef DEBUG
+
+extern lset_t base_debugging;	/* bits selecting what to report */
+
+#define DBGP(cond)         (cur_debugging & (cond))
+#define DBG(cond, action)   { if (DBGP(cond)) { action ; } }
+
+extern void DBG_log(const char *message, ...) PRINTF_LIKE(1);
+extern void DBG_dump(const char *label, const void *p, size_t len);
+#define DBG_dump_chunk(label, ch) DBG_dump(label, (ch).ptr, (ch).len)
+
+#else /*!DEBUG*/
+
+#define DBG(cond, action)	{ }	/* do nothing */
+
+#endif /*!DEBUG*/
+
+#define DBG_cond_dump(cond, label, p, len) DBG(cond, DBG_dump(label, p, len))
+#define DBG_cond_dump_chunk(cond, label, ch) DBG(cond, DBG_dump_chunk(label, ch))
+
+
+/* ip_str: a simple to use variant of addrtot.
+ * It stores its result in a static buffer.
+ * This means that newer calls overwrite the storage of older calls.
+ * Note: this is not used in any of the logging functions, so their
+ * callers may use it.
+ */
+extern const char *ip_str(const ip_address *src);
+
+/*
+ * call this routine to reset daily items.
+ */
+extern void daily_log_reset(void);
+extern void daily_log_event(void);
+
+/*
+ * some events are to be logged only occasionally.
+ */
+extern bool logged_txt_warning;
+extern bool logged_myid_ip_txt_warning;
+extern bool logged_myid_ip_key_warning;
+extern bool logged_myid_fqdn_txt_warning;
+extern bool logged_myid_fqdn_key_warning;