para.h

   1 /*
   2  * Copyright (C) 1997-2006 Andre Noll <maan@systemlinux.org>
   3  *
   4  *     This program is free software; you can redistribute it and/or modify
   5  *     it under the terms of the GNU General Public License as published by
   6  *     the Free Software Foundation; either version 2 of the License, or
   7  *     (at your option) any later version.
   8  *
   9  *     This program is distributed in the hope that it will be useful,
  10  *     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *     GNU General Public License for more details.
  13  *
  14  *     You should have received a copy of the GNU General Public License
  15  *     along with this program; if not, write to the Free Software
  16  *     Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
  17  */
  18
  19 /** \file para.h global paraslash definitions */
  20
  21 #include "config.h"
  22
  23 #include <sys/stat.h>
  24 #include <fcntl.h>
  25 #include <sys/wait.h>
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28 #include <time.h> /* time(), localtime() */
  29 #include <unistd.h>
  30 #include <errno.h>
  31 #include <limits.h>
  32 #include <stdarg.h>
  33 #include <ctype.h>
  34 #include <netinet/in.h>
  35 #include <arpa/inet.h>
  36 #include <sys/socket.h>
  37 #include <sys/un.h> /* needed by create_pf_socket */
  38 #include <string.h>
  39 #include "gcc-compat.h"
  40
  41 /* some internal constants */
  42 #define STRINGSIZE 4096
  43 #define MAXLINE 255
  44
  45
  46 #define PARA_MIN(a,b) ((a) < (b) ? (a) : (b))
  47 #define PARA_MAX(a,b) ((a) > (b) ? (a) : (b))
  48 #define PARA_ABS(a) ((a) > 0 ? (a) : -(a))
  49
  50 /* Loglevels */
  51 #define DEBUG 1
  52 #define INFO  2
  53 #define NOTICE 3
  54 #define WARNING 4
  55 #define ERROR 5
  56 #define CRIT 6
  57 #define EMERG 7
  58
  59
  60 #define COMPILE_TIME_LOGLEVEL 0
  61 #if DEBUG > COMPILE_TIME_LOGLEVEL
  62 #define PARA_DEBUG_LOG(f,...) para_log(DEBUG, "%s: " f, __FUNCTION__, __VA_ARGS__)
  63 #else
  64 #define PARA_DEBUG_LOG(...) do {;} while (0)
  65 #endif
  66
  67 #if INFO > COMPILE_TIME_LOGLEVEL
  68 #define PARA_INFO_LOG(f,...) para_log(INFO, "%s: " f, __FUNCTION__, __VA_ARGS__)
  69 #else
  70 #define PARA_INFO_LOG(...) do {;} while (0)
  71 #endif
  72
  73 #if NOTICE > COMPILE_TIME_LOGLEVEL
  74 #define PARA_NOTICE_LOG(f,...) para_log(NOTICE, "%s: " f, __FUNCTION__, __VA_ARGS__)
  75 #else
  76 #define PARA_NOTICE_LOG(...) do {;} while (0)
  77 #endif
  78
  79 #if WARNING > COMPILE_TIME_LOGLEVEL
  80 #define PARA_WARNING_LOG(f,...) para_log(WARNING, "%s: " f, __FUNCTION__, __VA_ARGS__)
  81 #else
  82 #define PARA_WARNING_LOG(...) do {;} while (0)
  83 #endif
  84
  85 #if ERROR > COMPILE_TIME_LOGLEVEL
  86 #define PARA_ERROR_LOG(f,...) para_log(ERROR, "%s: " f, __FUNCTION__, __VA_ARGS__)
  87 #else
  88 #define PARA_ERROR_LOG(...) do {;} while (0)
  89 #endif
  90
  91 #if CRIT > COMPILE_TIME_LOGLEVEL
  92 #define PARA_CRIT_LOG(f,...) para_log(CRIT, "%s: " f, __FUNCTION__, __VA_ARGS__)
  93 #else
  94 #define PARA_CRIT_LOG(...) do {;} while (0)
  95 #endif
  96
  97 #if EMERG > COMPILE_TIME_LOGLEVEL
  98 #define PARA_EMERG_LOG(f,...) para_log(EMERG, "%s: " f, __FUNCTION__, __VA_ARGS__)
  99 #else
 100 #define PARA_EMERG_LOG(...)
 101 #endif
 102
 103 #define COPYRIGHT "Copyright (c) 1997-2006 by Andre Noll"
 104
 105 #define LICENSE "This is free software with ABSOLUTELY NO WARRANTY. " \
 106         "See COPYING for details."
 107
 108 #define AWAITING_DATA_MSG "\nAwaiting Data."
 109 #define PROCEED_MSG "\nProceed.\n"
 110 #define PROCEED_MSG_LEN strlen(PROCEED_MSG)
 111 #define EOC_MSG "\nEnd of Command."
 112 #define CHALLENGE_RESPONSE_MSG "challenge_response:"
 113
 114 /* gui_common */
 115 int para_open_audiod_pipe(char *);
 116 int read_audiod_pipe(int, void (*)(char *));
 117
 118 /* exec */
 119 int para_exec_cmdline_pid(pid_t *pid, const char *cmdline, int *fds);
 120
 121 /* signal */
 122 int para_signal_init(void);
 123 int para_install_sighandler(int);
 124 void para_reap_children(void);
 125 pid_t para_reap_child(void);
 126 int para_next_signal(void);
 127
 128 /* time */
 129 int tv_diff(const struct timeval *b, const struct timeval *a, struct timeval *diff);
 130 long unsigned tv2ms(const struct timeval*);
 131 void d2tv(double, struct timeval*);
 132 void tv_add(const struct timeval*, const struct timeval *, struct timeval *);
 133 void tv_scale(const unsigned long, const struct timeval *, struct timeval *);
 134 void tv_divide(const unsigned long div, const struct timeval *tv,
 135         struct timeval *result);
 136 int tv_convex_combination(const long a, const struct timeval *tv1,
 137                 const long b, const struct timeval *tv2,
 138                 struct timeval *result);
 139 void ms2tv(const long unsigned n, struct timeval *tv);
 140
 141 /* stat */
 142 enum {
 143         SI_STATUS_BAR,          SI_STATUS,              SI_NUM_PLAYED,
 144         SI_MTIME,               SI_LENGTH_MIN,          SI_LENGTH_SEC,
 145         SI_FILE_SIZE,           SI_STATUS_FLAGS,        SI_FORMAT,
 146         SI_SCORE,               SI_AUDIO_INFO1,         SI_AUDIO_INFO2,
 147         SI_AUDIO_INFO3,         SI_DBINFO1,             SI_DBINFO2,
 148         SI_DBINFO3,             SI_DECODER_FLAGS,       SI_AUDIOD_STATUS,
 149         SI_PLAY_TIME,           SI_UPTIME,              SI_OFFSET,
 150         SI_LENGTH,              SI_STREAM_START,        SI_CURRENT_TIME,
 151         SI_AUDIOD_UPTIME,       SI_SELECTOR,            NUM_STAT_ITEMS
 152 };
 153
 154 int stat_item_valid(const char *item);
 155 int stat_line_valid(const char *);
 156 void stat_client_write(char *msg, int itemnum);
 157 int stat_client_add(int fd, long unsigned mask);
 158 void dump_empty_status(void);
 159 unsigned for_each_line(char *, int, void (*)(char *));
 160
 161 struct stat_item_data {
 162         const char *prefix, *postfix;
 163         unsigned x, y, len;
 164         int fg, bg, align;
 165 };
 166
 167 /* gui_theme */
 168 struct gui_theme {
 169         const char *name;
 170         const char *author;
 171         int sb_fg, sb_bg;
 172         int cmd_fg, cmd_bg;
 173         int output_fg, output_bg;
 174         int msg_fg, msg_bg;
 175         int err_msg_fg, err_msg_bg;
 176         int welcome_fg, welcome_bg;
 177         int sep_fg, sep_bg;
 178         const char *sep_str;
 179         int default_fg, default_bg;
 180
 181         int top_lines_default, top_lines_min;
 182         int lines_min, cols_min;
 183         struct stat_item_data data[NUM_STAT_ITEMS];
 184 };
 185
 186 void init_theme(int i, struct gui_theme *);
 187 void next_theme(struct gui_theme *);
 188 void prev_theme(struct gui_theme *);
 189 #define LEFT 1
 190 #define RIGHT 2
 191 #define CENTER 3
 192
 193
 194 __printf_2_3 void para_log(int, const char*, ...);
 195
 196 /* taken from printf man page */
 197 #define PARA_VSPRINTF(fmt, p) \
 198 { \
 199         int n, size = 100; \
 200         p = para_malloc(size); \
 201         while (1) { \
 202                 va_list ap; \
 203                 /* Try to print in the allocated space. */ \
 204                 va_start(ap, fmt); \
 205                 n = vsnprintf(p, size, fmt, ap); \
 206                 va_end(ap); \
 207                 /* If that worked, return the string. */ \
 208                 if (n > -1 && n < size) \
 209                         break; \
 210                 /* Else try again with more space. */ \
 211                 if (n > -1) /* glibc 2.1 */ \
 212                         size = n + 1; /* precisely what is needed */ \
 213                 else /* glibc 2.0 */ \
 214                         size *= 2; /* twice the old size */ \
 215                 p = para_realloc(p, size); \
 216         } \
 217 }