RC4: Fix invalid read.

[paraslash.git] / para.h

diff --git a/para.h b/para.h
index 305707da8d5194856fe34c520428dd8410843997..f095a6aa385d2f717048f1e25e15741a15632617 100644 (file)
--- a/para.h
+++ b/para.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1997-2010 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 1997-2011 Andre Noll <maan@systemlinux.org>
  *
  * Licensed under the GPL v2. For licencing details see COPYING.
  */
@@ -50,7 +50,7 @@
        _x > 0? _x : -_x; })
 
 /**
- * define a standard log function that always writes to stderr
+ * Define a standard log function that always writes to stderr.
  *
  * \param loglevel_barrier If the loglevel of the current message
  * is less than that, the message is going to be ignored.
@@ -70,28 +70,28 @@
 /** Version text used by various commands if -V switch was given. */
 #define VERSION_TEXT(prefix) "para_" prefix " " PACKAGE_VERSION \
        " (" GIT_VERSION ": " CODENAME ")" "\n" \
-       "Copyright (C) 2010 Andre Noll\n" \
+       "Copyright (C) 2011 Andre Noll\n" \
        "This is free software with ABSOLUTELY NO WARRANTY." \
        " See COPYING for details.\n" \
        "Written by Andre Noll.\n" \
        "Report bugs to <maan@systemlinux.org>.\n"
 
-/** print out \p VERSION_TEXT and exit if version flag was given */
+/** Print out \p VERSION_TEXT and exit if version flag was given. */
 #define HANDLE_VERSION_FLAG(_prefix, _args_info_struct) \
        if (_args_info_struct.version_given) { \
                printf("%s", VERSION_TEXT(_prefix)); \
                exit(EXIT_SUCCESS); \
        }
 
-/* Sent by para_client to initiate the authentication procedure. */
+/** Sent by para_client to initiate the authentication procedure. */
 #define AUTH_REQUEST_MSG "auth rsa "
-/** sent by para_server for commands that expect a data file */
+/** Sent by para_server for commands that expect a data file. */
 #define AWAITING_DATA_MSG "\nAwaiting Data."
-/** sent by para_server if authentication was successful */
+/** Sent by para_server if authentication was successful. */
 #define PROCEED_MSG "Proceed."
-/** length of the \p PROCEED_MSG string */
+/** Length of the \p PROCEED_MSG string. */
 #define PROCEED_MSG_LEN strlen(PROCEED_MSG)
-/** sent by para_client to indicate the end of the command line */
+/** Sent by para_client to indicate the end of the command line. */
 #define EOC_MSG "\nEnd of Command."
 
 /* exec */
@@ -165,6 +165,17 @@ _static_inline_ long int para_random(unsigned max)
        return ((max + 0.0) * (random() / (RAND_MAX + 1.0)));
 }
 
+/** Round up x to next multiple of y. */
+#define ROUND_UP(x, y) ({ \
+       const typeof(y) _divisor = y; \
+       ((x) + _divisor - 1) / _divisor * _divisor; })
+
+/** Round down x to multiple of y. */
+#define ROUND_DOWN(x, y) ({ \
+       const typeof(y) _divisor = y; \
+       (x) / _divisor * _divisor; })
+
+/** Divide and round up to next integer. */
 #define DIV_ROUND_UP(x, y) ({ \
        typeof(y) _divisor = y; \
        ((x) + _divisor - 1) / _divisor; })