Do logging and email sending in the locale specified by the

"sudoers_locale" setting ("C" by default).  Email send by sudo
includes MIME headers when the sudoers locale is not "C".

NEWS

@@ -71,6 +71,10 @@ What's new in Sudo 1.7.5?
    after validating the command so the sudoers entries do not need
    to include the backslashes.
 
+ * Logging and email sending are now done in the locale specified
+   by the "sudoers_locale" setting ("C" by default).  Email send by
+   sudo now includes MIME headers when "sudoers_locale" is not "C".
+
 What's new in Sudo 1.7.4p6?
 
  * A bug has been fixed in the I/O logging support that could cause

config.h.in

@@ -352,6 +352,9 @@
 /* Define to 1 if you have the <netgroup.h> header file. */
 #undef HAVE_NETGROUP_H
 
+/* Define to 1 if you have the `nl_langinfo' function. */
+#undef HAVE_NL_LANGINFO
+
 /* Define to 1 if you have the `openpty' function. */
 #undef HAVE_OPENPTY
 

configure

@@ -15003,7 +15003,8 @@ fi
 LIBS=$ac_save_LIBS
 
 for ac_func in strrchr sysconf tzset strftime initgroups getgroups fstat \
-	       regcomp setlocale getaddrinfo mbr_check_membership setrlimit64
+	       regcomp setlocale nl_langinfo getaddrinfo mbr_check_membership \
+	       setrlimit64
 do :
   as_ac_var=`$as_echo "ac_cv_func_$ac_func" | $as_tr_sh`
 ac_fn_c_check_func "$LINENO" "$ac_func" "$as_ac_var"

configure.in

@@ -1943,7 +1943,8 @@ dnl Function checks
 dnl
 AC_FUNC_GETGROUPS
 AC_CHECK_FUNCS(strrchr sysconf tzset strftime initgroups getgroups fstat \
-	       regcomp setlocale getaddrinfo mbr_check_membership setrlimit64)
+	       regcomp setlocale nl_langinfo getaddrinfo mbr_check_membership \
+	       setrlimit64)
 AC_CHECK_FUNCS(getline, [], [
     AC_LIBOBJ(getline)
     AC_CHECK_FUNCS(fgetln)

plugins/sudoers/logging.c

@@ -47,6 +47,12 @@
 #ifdef HAVE_UNISTD_H
 # include <unistd.h>
 #endif /* HAVE_UNISTD_H */
+#ifdef HAVE_SETLOCALE
+# include <locale.h>
+#endif /* HAVE_SETLOCALE */
+#ifdef HAVE_NL_LANGINFO
+# include <langinfo.h>
+#endif /* HAVE_NL_LANGINFO */
 #include <pwd.h>
 #include <grp.h>
 #include <signal.h>
@@ -122,6 +128,12 @@ do_syslog(int pri, char *msg)
     char *p, *tmp, save;
     const char *fmt;
 
+#ifdef HAVE_SETLOCALE
+    const char *old_locale = estrdup(setlocale(LC_ALL, NULL));
+    if (!setlocale(LC_ALL, def_sudoers_locale))
+	setlocale(LC_ALL, "C");
+#endif /* HAVE_SETLOCALE */
+
     /*
      * Log the full line, breaking into multiple syslog(3) calls if necessary
      */
@@ -156,6 +168,11 @@ do_syslog(int pri, char *msg)
 	fmt = FMT_CONTD;
 	maxlen = MAXSYSLOGLEN - (sizeof(FMT_CONTD) - 6 + strlen(user_name));
     }
+
+#ifdef HAVE_SETLOCALE
+    setlocale(LC_ALL, old_locale);
+    efree((void *)old_locale);
+#endif /* HAVE_SETLOCALE */
 }
 
 static void
@@ -178,6 +195,12 @@ do_logfile(char *msg)
     } else {
 	time_t now;
 
+#ifdef HAVE_SETLOCALE
+	const char *old_locale = estrdup(setlocale(LC_ALL, NULL));
+	if (!setlocale(LC_ALL, def_sudoers_locale))
+	    setlocale(LC_ALL, "C");
+#endif /* HAVE_SETLOCALE */
+
 	now = time(NULL);
 	if (def_loglinelen == 0) {
 	    /* Don't pretty-print long log file lines (hard to grep) */
@@ -247,6 +270,11 @@ do_logfile(char *msg)
 	(void) fflush(fp);
 	(void) lock_file(fileno(fp), SUDO_UNLOCK);
 	(void) fclose(fp);
+
+#ifdef HAVE_SETLOCALE
+	setlocale(LC_ALL, old_locale);
+	efree((void *)old_locale);
+#endif /* HAVE_SETLOCALE */
     }
 }
 
@@ -410,7 +438,7 @@ send_mail(const char *fmt, ...)
 	"USER=root",
 	NULL
     };
-#endif
+#endif /* NO_ROOT_MAILER */
 
     /* Just return if mailer is disabled. */
     if (!def_mailerpath || !def_mailto)
@@ -456,6 +484,14 @@ send_mail(const char *fmt, ...)
 	(void) dup2(fd, STDERR_FILENO);
     }
 
+#ifdef HAVE_SETLOCALE
+    if (!setlocale(LC_ALL, def_sudoers_locale)) {
+	setlocale(LC_ALL, "C");
+	efree(def_sudoers_locale);
+	def_sudoers_locale = estrdup("C");
+    }
+#endif /* HAVE_SETLOCALE */
+
     /* Close password, group and other fds so we don't leak. */
     sudo_endpwent();
     sudo_endgrent();
@@ -552,6 +588,11 @@ send_mail(const char *fmt, ...)
 	    (void) fputc(*p, mail);
     }
 
+#ifdef HAVE_NL_LANGINFO
+    if (strcmp(def_sudoers_locale, "C") != 0)
+	(void) fprintf(mail, "\nContent-Type: text/plain; charset=\"%s\"\nContent-Transfer-Encoding: 8bit", nl_langinfo(CODESET));
+#endif /* HAVE_NL_LANGINFO */
+
     (void) fprintf(mail, "\n\n%s : %s : %s : ", user_host,
 	get_timestr(time(NULL), def_log_year), user_name);
     va_start(ap, fmt);