/*
- * Copyright (C) 1997-2007 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 1997-2009 Andre Noll <maan@systemlinux.org>
*
* Licensed under the GPL v2. For licencing details see COPYING.
*/
/** used in various contexts */
#define MAXLINE 255
-/** compute the minimum of \a a and \a b */
-#define PARA_MIN(a,b) ((a) < (b) ? (a) : (b))
-/** compute the maximum of \a a and \a b */
-#define PARA_MAX(a,b) ((a) > (b) ? (a) : (b))
-/** compute the absolute value of \a a */
-#define PARA_ABS(a) ((a) > 0 ? (a) : -(a))
-
-/** debug loglevel, gets really noisy */
-#define DEBUG 1
-/** still noisy, but won't fill your disk */
-#define INFO 2
-/** normal, but significant event */
-#define NOTICE 3
-/** unexpected event that can be handled */
-#define WARNING 4
-/** unhandled error condition */
-#define ERROR 5
-/** system might be unreliable */
-#define CRIT 6
-/** last message before exit */
-#define EMERG 7
-
-/** log messages with lower proirity than that will not be compiled in*/
+/** Compute the minimum of \a x and \a y. */
+#define PARA_MIN(x, y) ({ \
+ typeof(x) _min1 = (x); \
+ typeof(y) _min2 = (y); \
+ (void) (&_min1 == &_min2); \
+ _min1 < _min2 ? _min1 : _min2; })
+
+/** Compute the maximum of \a x and \a y. */
+#define PARA_MAX(x, y) ({ \
+ typeof(x) _max1 = (x); \
+ typeof(y) _max2 = (y); \
+ (void) (&_max1 == &_max2); \
+ _max1 < _max2 ? _max2 : _max1; })
+
+/** Compute the absolute value of \a x. */
+#define PARA_ABS(x) ({ \
+ typeof(x) _x = (x); \
+ _x > 0? _x : -_x; })
+
+/** Debug loglevel, gets really noisy. */
+#define LL_DEBUG 0
+/** Still noisy, but won't fill your disk. */
+#define LL_INFO 1
+/** Normal, but significant event. */
+#define LL_NOTICE 2
+/** Unexpected event that can be handled. */
+#define LL_WARNING 3
+/** Unhandled error condition. */
+#define LL_ERROR 4
+/** System might be unreliable. */
+#define LL_CRIT 5
+/** Last message before exit. */
+#define LL_EMERG 6
+/** Number of all loglevels. */
+#define NUM_LOGLEVELS 7
+
+/** Log messages with lower priority than that will not be compiled in. */
#define COMPILE_TIME_LOGLEVEL 0
-#if DEBUG > COMPILE_TIME_LOGLEVEL
-#define PARA_DEBUG_LOG(f,...) para_log(DEBUG, "%s: " f, __FUNCTION__, ## __VA_ARGS__)
+/** \cond */
+#if LL_DEBUG >= COMPILE_TIME_LOGLEVEL
+#define PARA_DEBUG_LOG(f,...) para_log(LL_DEBUG, "%s: " f, __FUNCTION__, ## __VA_ARGS__)
#else
#define PARA_DEBUG_LOG(...) do {;} while (0)
#endif
-#if INFO > COMPILE_TIME_LOGLEVEL
-#define PARA_INFO_LOG(f,...) para_log(INFO, "%s: " f, __FUNCTION__, ## __VA_ARGS__)
+#if LL_INFO >= COMPILE_TIME_LOGLEVEL
+#define PARA_INFO_LOG(f,...) para_log(LL_INFO, "%s: " f, __FUNCTION__, ## __VA_ARGS__)
#else
#define PARA_INFO_LOG(...) do {;} while (0)
#endif
-#if NOTICE > COMPILE_TIME_LOGLEVEL
-#define PARA_NOTICE_LOG(f,...) para_log(NOTICE, "%s: " f, __FUNCTION__, ## __VA_ARGS__)
+#if LL_NOTICE >= COMPILE_TIME_LOGLEVEL
+#define PARA_NOTICE_LOG(f,...) para_log(LL_NOTICE, "%s: " f, __FUNCTION__, ## __VA_ARGS__)
#else
#define PARA_NOTICE_LOG(...) do {;} while (0)
#endif
-#if WARNING > COMPILE_TIME_LOGLEVEL
-#define PARA_WARNING_LOG(f,...) para_log(WARNING, "%s: " f, __FUNCTION__, ## __VA_ARGS__)
+#if LL_WARNING >= COMPILE_TIME_LOGLEVEL
+#define PARA_WARNING_LOG(f,...) para_log(LL_WARNING, "%s: " f, __FUNCTION__, ## __VA_ARGS__)
#else
#define PARA_WARNING_LOG(...) do {;} while (0)
#endif
-#if ERROR > COMPILE_TIME_LOGLEVEL
-#define PARA_ERROR_LOG(f,...) para_log(ERROR, "%s: " f, __FUNCTION__, ## __VA_ARGS__)
+#if LL_ERROR >= COMPILE_TIME_LOGLEVEL
+#define PARA_ERROR_LOG(f,...) para_log(LL_ERROR, "%s: " f, __FUNCTION__, ## __VA_ARGS__)
#else
#define PARA_ERROR_LOG(...) do {;} while (0)
#endif
-#if CRIT > COMPILE_TIME_LOGLEVEL
-#define PARA_CRIT_LOG(f,...) para_log(CRIT, "%s: " f, __FUNCTION__, ## __VA_ARGS__)
+#if LL_CRIT >= COMPILE_TIME_LOGLEVEL
+#define PARA_CRIT_LOG(f,...) para_log(LL_CRIT, "%s: " f, __FUNCTION__, ## __VA_ARGS__)
#else
#define PARA_CRIT_LOG(...) do {;} while (0)
#endif
-#if EMERG > COMPILE_TIME_LOGLEVEL
-#define PARA_EMERG_LOG(f,...) para_log(EMERG, "%s: " f, __FUNCTION__, ## __VA_ARGS__)
+#if LL_EMERG >= COMPILE_TIME_LOGLEVEL
+#define PARA_EMERG_LOG(f,...) para_log(LL_EMERG, "%s: " f, __FUNCTION__, ## __VA_ARGS__)
#else
#define PARA_EMERG_LOG(...)
#endif
+/** \endcond */
/**
* define a standard log function that always writes to stderr
va_end(argp); \
}
-/** version text used by various commands if -V switch was given */
-#define VERSION_TEXT(prefix) "para_" prefix " " PACKAGE_VERSION "\n" \
- "Copyright (C) 2007 Andre Noll\n" \
+/** 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) 2009 Andre Noll\n" \
"This is free software with ABSOLUTELY NO WARRANTY." \
" See COPYING for details.\n" \
"Written by Andre Noll.\n" \
printf("%s", VERSION_TEXT(_prefix)); \
exit(EXIT_SUCCESS); \
}
+
+/* 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 */
#define AWAITING_DATA_MSG "\nAwaiting Data."
/** sent by para_server if authentication was successful */
-#define PROCEED_MSG "\nProceed.\n"
+#define PROCEED_MSG "Proceed."
/** 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 */
#define EOC_MSG "\nEnd of Command."
-/** sent by para_client, followed by the decrypted challenge number */
-#define CHALLENGE_RESPONSE_MSG "challenge_response:"
/* exec */
int para_exec_cmdline_pid(pid_t *pid, const char *cmdline, int *fds);
const long b, const struct timeval *tv2,
struct timeval *result);
void ms2tv(const long unsigned n, struct timeval *tv);
+void compute_chunk_time(long unsigned chunk_num,
+ struct timeval *chunk_tv, struct timeval *stream_start,
+ struct timeval *result);
-/* stat */
-enum {
- SI_STATUS_BAR, SI_STATUS, SI_NUM_PLAYED,
- SI_MTIME, SI_LENGTH_MIN, SI_LENGTH_SEC,
- SI_FILE_SIZE, SI_STATUS_FLAGS, SI_FORMAT,
- SI_SCORE, SI_AUDIO_INFO1, SI_AUDIO_INFO2,
- SI_AUDIO_INFO3, SI_DBINFO1, SI_DBINFO2,
- SI_DBINFO3, SI_DECODER_FLAGS, SI_AUDIOD_STATUS,
- SI_PLAY_TIME, SI_UPTIME, SI_OFFSET,
- SI_LENGTH, SI_STREAM_START, SI_CURRENT_TIME,
- SI_AUDIOD_UPTIME, SI_SELECTOR, NUM_STAT_ITEMS
-};
-
-int stat_item_valid(const char *item);
-int stat_line_valid(const char *);
-void stat_client_write(const char *msg, int itemnum);
-int stat_client_add(int fd, long unsigned mask);
-#define FOR_EACH_STAT_ITEM(i) for (i = 0; i < NUM_STAT_ITEMS; i++)
+/** The enum of all status items. */
+enum status_items {STATUS_ITEM_ENUM NUM_STAT_ITEMS};
+extern const char *status_item_list[];
+/** Loop over each status item. */
+#define FOR_EACH_STATUS_ITEM(i) for (i = 0; i < NUM_STAT_ITEMS; i++)
+int for_each_stat_item(char *item_buf, size_t num_bytes,
+ int (*item_handler)(int, char *));
__printf_2_3 void para_log(int, const char*, ...);
-/* taken from printf man page */
+/**
+ * Write a log message to a dynamically allocated string.
+ *
+ * \param fmt Usual format string.
+ * \param p Result pointer.
+ *
+ * \sa printf(3). */
#define PARA_VSPRINTF(fmt, p) \
{ \
int n; \
} \
}
-static inline int para_random(unsigned max)
+/**
+ * Return a random non-negative integer in an interval.
+ *
+ * \param max Determines maximal possible return value.
+ *
+ * \return An integer between zero and \p max - 1, inclusively.
+ */
+_static_inline_ long int para_random(unsigned max)
{
- return ((max + 0.0) * (rand() / (RAND_MAX + 1.0)));
+ return ((max + 0.0) * (random() / (RAND_MAX + 1.0)));
}
-/* Round up x to a multiple of y */
-#define ROUND_UP(x, y) (((x) + (y - 1) / (y)) * (y))
+/** Round up x to a multiple of y */
+#define ROUND_UP(x, y) ((((x) + ((y) - 1)) / (y)) * (y))
+
+
+/** Get the size of an array */
+#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
+
+/**
+ * Wrapper for isspace.
+ * NetBSD needs this.
+ */
+/*
+ * The values should be cast to an unsigned char first, then to int.
+ * Why? Because the isdigit (as do all other is/to functions/macros)
+ * expect a number from 0 upto and including 255 as their (int) argument.
+ * Because char is signed on most systems, casting it to int immediately
+ * gives the functions an argument between -128 and 127 (inclusive),
+ * which they will use as an array index, and which will thus fail
+ * horribly for characters which have their most significant bit set.
+ */
+#define para_isspace(c) isspace((int)(unsigned char)(c))
+
+/** Data that indicates an eof-condition for a fec-encoded stream. */
+#define FEC_EOF_PACKET "\xec\x0d\xcc\xfe\0\0\0\0" \
+ "\0\0\0\0\0\0\0\0" "\0\0\0\0\0\0\0\0" "\0\0\0\0\0\0\0\0"
+#define FEC_EOF_PACKET_LEN 32
projects / paraslash.git / blobdiff