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-rw-r--r--src/starter/loglite.c295
1 files changed, 295 insertions, 0 deletions
diff --git a/src/starter/loglite.c b/src/starter/loglite.c
new file mode 100644
index 000000000..94d9b79bb
--- /dev/null
+++ b/src/starter/loglite.c
@@ -0,0 +1,295 @@
+/* error logging functions
+ * Copyright (C) 1997 Angelos D. Keromytis.
+ * 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: loglite.c 3267 2007-10-08 19:57:54Z andreas $
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <stdarg.h>
+#include <syslog.h>
+#include <errno.h>
+#include <string.h>
+#include <unistd.h>
+#include <signal.h> /* used only if MSG_NOSIGNAL not defined */
+#include <libgen.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include <freeswan.h>
+
+#include <constants.h>
+#include <defs.h>
+#include <log.h>
+#include <whack.h>
+
+bool
+ log_to_stderr = FALSE, /* should log go to stderr? */
+ log_to_syslog = TRUE; /* should log go to syslog? */
+
+void
+init_log(const char *program)
+{
+ if (log_to_stderr)
+ setbuf(stderr, NULL);
+ if (log_to_syslog)
+ openlog(program, LOG_CONS | LOG_NDELAY | LOG_PID, LOG_AUTHPRIV);
+}
+
+void
+close_log(void)
+{
+ if (log_to_syslog)
+ closelog();
+}
+
+void
+plog(const char *message, ...)
+{
+ va_list args;
+ char m[LOG_WIDTH]; /* longer messages will be truncated */
+
+ va_start(args, message);
+ vsnprintf(m, sizeof(m), message, args);
+ va_end(args);
+
+ if (log_to_stderr)
+ fprintf(stderr, "%s\n", m);
+ if (log_to_syslog)
+ syslog(LOG_WARNING, "%s", m);
+}
+
+void
+loglog(int mess_no, const char *message, ...)
+{
+ va_list args;
+ char m[LOG_WIDTH]; /* longer messages will be truncated */
+
+ va_start(args, message);
+ vsnprintf(m, sizeof(m), message, args);
+ va_end(args);
+
+ if (log_to_stderr)
+ fprintf(stderr, "%s\n", m);
+ if (log_to_syslog)
+ syslog(LOG_WARNING, "%s", m);
+}
+
+void
+log_errno_routine(int e, const char *message, ...)
+{
+ va_list args;
+ char m[LOG_WIDTH]; /* longer messages will be truncated */
+
+ va_start(args, message);
+ vsnprintf(m, sizeof(m), message, args);
+ va_end(args);
+
+ if (log_to_stderr)
+ fprintf(stderr, "ERROR: %s. Errno %d: %s\n", m, e, strerror(e));
+ if (log_to_syslog)
+ syslog(LOG_ERR, "ERROR: %s. Errno %d: %s", m, e, strerror(e));
+}
+
+void
+exit_log(const char *message, ...)
+{
+ va_list args;
+ char m[LOG_WIDTH]; /* longer messages will be truncated */
+
+ va_start(args, message);
+ vsnprintf(m, sizeof(m), message, args);
+ va_end(args);
+
+ if (log_to_stderr)
+ fprintf(stderr, "FATAL ERROR: %s\n", m);
+ if (log_to_syslog)
+ syslog(LOG_ERR, "FATAL ERROR: %s", m);
+ exit(1);
+}
+
+void
+exit_log_errno_routine(int e, const char *message, ...)
+{
+ va_list args;
+ char m[LOG_WIDTH]; /* longer messages will be truncated */
+
+ va_start(args, message);
+ vsnprintf(m, sizeof(m), message, args);
+ va_end(args);
+
+ if (log_to_stderr)
+ fprintf(stderr, "FATAL ERROR: %s. Errno %d: %s\n", m, e, strerror(e));
+ if (log_to_syslog)
+ syslog(LOG_ERR, "FATAL ERROR: %s. Errno %d: %s", m, e, strerror(e));
+ exit(1);
+}
+
+void
+whack_log(int mess_no, const char *message, ...)
+{
+ va_list args;
+ char m[LOG_WIDTH]; /* longer messages will be truncated */
+
+ va_start(args, message);
+ vsnprintf(m, sizeof(m), message, args);
+ va_end(args);
+
+ fprintf(stderr, "%s\n", m);
+}
+
+/* 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!).
+ */
+char diag_space[sizeof(diag_space)];
+
+err_t
+builddiag(const char *fmt, ...)
+{
+ static char diag_space[LOG_WIDTH]; /* longer messages will be truncated */
+ char t[sizeof(diag_space)]; /* build result here first */
+ va_list args;
+
+ va_start(args, fmt);
+ t[0] = '\0'; /* in case nothing terminates string */
+ vsnprintf(t, sizeof(t), fmt, args);
+ va_end(args);
+ strcpy(diag_space, t);
+ return diag_space;
+}
+
+/* Debugging message support */
+
+#ifdef DEBUG
+
+void
+switch_fail(int n, const char *file_str, unsigned long line_no)
+{
+ char buf[30];
+
+ snprintf(buf, sizeof(buf), "case %d unexpected", n);
+ passert_fail(buf, file_str, line_no);
+}
+
+void
+passert_fail(const char *pred_str, const char *file_str, unsigned long line_no)
+{
+ /* we will get a possibly unplanned prefix. Hope it works */
+ loglog(RC_LOG_SERIOUS, "ASSERTION FAILED at %s:%lu: %s", file_str, line_no, pred_str);
+ abort(); /* exiting correctly doesn't always work */
+}
+
+lset_t
+ base_debugging = DBG_NONE, /* default to reporting nothing */
+ cur_debugging = DBG_NONE;
+
+void
+pexpect_log(const char *pred_str, const char *file_str, unsigned long line_no)
+{
+ /* we will get a possibly unplanned prefix. Hope it works */
+ loglog(RC_LOG_SERIOUS, "EXPECTATION FAILED at %s:%lu: %s", file_str, line_no, pred_str);
+}
+
+/* log a debugging message (prefixed by "| ") */
+
+void
+DBG_log(const char *message, ...)
+{
+ va_list args;
+ char m[LOG_WIDTH]; /* longer messages will be truncated */
+
+ va_start(args, message);
+ vsnprintf(m, sizeof(m), message, args);
+ va_end(args);
+
+ if (log_to_stderr)
+ fprintf(stderr, "| %s\n", m);
+ if (log_to_syslog)
+ syslog(LOG_DEBUG, "| %s", m);
+}
+
+/* dump raw bytes in hex to stderr (for lack of any better destination) */
+
+void
+DBG_dump(const char *label, const void *p, size_t len)
+{
+# define DUMP_LABEL_WIDTH 20 /* arbitrary modest boundary */
+# define DUMP_WIDTH (4 * (1 + 4 * 3) + 1)
+ char buf[DUMP_LABEL_WIDTH + DUMP_WIDTH];
+ char *bp;
+ const unsigned char *cp = p;
+
+ bp = buf;
+
+ if (label != NULL && label[0] != '\0')
+ {
+ /* Handle the label. Care must be taken to avoid buffer overrun. */
+ size_t llen = strlen(label);
+
+ if (llen + 1 > sizeof(buf))
+ {
+ DBG_log("%s", label);
+ }
+ else
+ {
+ strcpy(buf, label);
+ if (buf[llen-1] == '\n')
+ {
+ buf[llen-1] = '\0'; /* get rid of newline */
+ DBG_log("%s", buf);
+ }
+ else if (llen < DUMP_LABEL_WIDTH)
+ {
+ bp = buf + llen;
+ }
+ else
+ {
+ DBG_log("%s", buf);
+ }
+ }
+ }
+
+ do {
+ int i, j;
+
+ for (i = 0; len!=0 && i!=4; i++)
+ {
+ *bp++ = ' ';
+ for (j = 0; len!=0 && j!=4; len--, j++)
+ {
+ static const char hexdig[] = "0123456789abcdef";
+
+ *bp++ = ' ';
+ *bp++ = hexdig[(*cp >> 4) & 0xF];
+ *bp++ = hexdig[*cp & 0xF];
+ cp++;
+ }
+ }
+ *bp = '\0';
+ DBG_log("%s", buf);
+ bp = buf;
+ } while (len != 0);
+# undef DUMP_LABEL_WIDTH
+# undef DUMP_WIDTH
+}
+
+#endif /* DEBUG */
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