/*
- * Copyright (C) 1997-2006 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 1997-2009 Andre Noll <maan@systemlinux.org>
*
- * 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.
- *
- * 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
+ * Licensed under the GPL v2. For licencing details see COPYING.
*/
/** \file para.h global paraslash definitions */
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/wait.h>
-#include <signal.h>
-#include <sys/signal.h>
#include <stdio.h>
#include <stdlib.h>
-#include <string.h>
#include <time.h> /* time(), localtime() */
#include <unistd.h>
#include <errno.h>
#include <limits.h>
#include <stdarg.h>
-#include <stropts.h>
-#include <poll.h>
-#include <sys/socket.h>
+#include <ctype.h>
#include <netinet/in.h>
#include <arpa/inet.h>
-#include <sys/ipc.h>
-#include <sys/sem.h>
-#include <ctype.h>
+#include <sys/socket.h>
#include <sys/un.h> /* needed by create_pf_socket */
+#include <string.h>
+#include <assert.h>
#include "gcc-compat.h"
-/* some internal constants */
-#define STRINGSIZE 4096
+/** used in various contexts */
#define MAXLINE 255
-
-#define MIN(a,b) ((a) < (b) ? (a) : (b))
-#define MAX(a,b) ((a) > (b) ? (a) : (b))
-#define ABS(a) ((a) > 0 ? (a) : -(a))
-
-/* Loglevels */
-#define DEBUG 1
-#define INFO 2
-#define NOTICE 3
-#define WARNING 4
-#define ERROR 5
-#define CRIT 6
-#define EMERG 7
-
-
+/** 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(...)
+#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(...)
+#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(...)
+#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(...)
+#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(...)
+#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(...)
+#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 COPYRIGHT "Copyright (c) 1997-2006 by Andre Noll"
-
-#define LICENSE "This is free software with ABSOLUTELY NO WARRANTY. " \
- "See COPYING for details."
-
+/**
+ * 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.
+ *
+ */
+#define INIT_STDERR_LOGGING(loglevel_barrier) \
+ __printf_2_3 void para_log(int ll, const char* fmt,...) \
+ { \
+ va_list argp; \
+ if (ll < loglevel_barrier) \
+ return; \
+ va_start(argp, fmt); \
+ vfprintf(stderr, fmt, argp); \
+ va_end(argp); \
+ }
+
+/** version text used by various commands if -V switch was given */
+#define VERSION_TEXT(prefix) "para_" prefix " " PACKAGE_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" \
+ "Report bugs to <maan@systemlinux.org>.\n"
+
+/** 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_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"
+/** 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:"
-/* gui_common */
-int para_open_audiod_pipe(char *);
-int read_audiod_pipe(int, void (*)(char *));
-
/* exec */
-int file_exists(const char *);
-int para_exec(pid_t *, const char *, char *const [], int *);
-int para_exec_cmdline_pid(pid_t *, char *, int *);
-
-/* signal */
-int para_signal_init(void);
-int para_install_sighandler(int);
-void para_reap_children(void);
-pid_t para_reap_child(void);
-int para_next_signal(void);
+int para_exec_cmdline_pid(pid_t *pid, const char *cmdline, int *fds);
/* time */
int tv_diff(const struct timeval *b, const struct timeval *a, struct timeval *diff);
void d2tv(double, struct timeval*);
void tv_add(const struct timeval*, const struct timeval *, struct timeval *);
void tv_scale(const unsigned long, const struct timeval *, struct timeval *);
-void tv_divide(const unsigned long div, const struct timeval *tv,
+void tv_divide(const unsigned long divisor, const struct timeval *tv,
struct timeval *result);
int tv_convex_combination(const long a, const struct timeval *tv1,
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_DBTOOL,
-};
-#define NUM_STAT_ITEMS (SI_DBTOOL + 1)
+/** 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 stat_item_valid(const char *item);
int stat_line_valid(const char *);
-void stat_client_write(char *msg);
-int stat_client_add(int);
-void dump_empty_status(void);
-unsigned for_each_line(char *, int, void (*)(char *), int);
-
-struct stat_item_data {
- char *prefix, *postfix;
- unsigned x, y, len;
- int fg, bg, align;
-};
-
-/* gui_theme */
-struct gui_theme {
- char *name;
- char *author;
- int sb_fg, sb_bg;
- int cmd_fg, cmd_bg;
- int output_fg, output_bg;
- int msg_fg, msg_bg;
- int err_msg_fg, err_msg_bg;
- int welcome_fg, welcome_bg;
- int sep_fg, sep_bg;
- char *sep_str;
- int default_fg, default_bg;
-
- int top_lines_default, top_lines_min;
- int lines_min, cols_min;
- struct stat_item_data data[NUM_STAT_ITEMS];
-};
-
-void init_theme(int i, struct gui_theme *);
-void next_theme(struct gui_theme *);
-void prev_theme(struct gui_theme *);
-#define LEFT 1
-#define RIGHT 2
-#define CENTER 3
-
-
-__printf_2_3 void para_log(int, char*, ...);
-
-/* taken from printf man page */
+void stat_client_write(const char *msg, int itemnum);
+int stat_client_add(int fd, long unsigned mask);
+
+__printf_2_3 void para_log(int, const char*, ...);
+
+/**
+ * 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, size = 100; \
+ int n; \
+ size_t size = 100; \
p = para_malloc(size); \
while (1) { \
va_list ap; \
} \
}
+/**
+ * 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) * (random() / (RAND_MAX + 1.0)));
+}
+
+/** Round up x to a multiple of y */
+#define ROUND_UP(x, y) ((((x) + ((y) - 1)) / (y)) * (y))
-enum supported_dbtools {DBT_DOPEY,
-#ifdef HAVE_MYSQL
- DBT_MYSQL,
-#endif
- NUM_DBTOOLS
-};
+/** 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