1 | //util.c: |
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2 | |
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3 | /* |
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4 | * Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008 |
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5 | * The code (may) include prototypes and comments (and maybe |
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6 | * other code fragements) from libpulse*. They are mostly copyrighted by: |
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7 | * Lennart Poettering <poettering@users.sourceforge.net> and |
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8 | * Pierre Ossman <drzeus@drzeus.cx> |
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9 | * |
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10 | * This file is part of libroarpulse a part of RoarAudio, |
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11 | * a cross-platform sound system for both, home and professional use. |
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12 | * See README for details. |
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13 | * |
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14 | * This file is free software; you can redistribute it and/or modify |
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15 | * it under the terms of the GNU General Public License version 3 |
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16 | * as published by the Free Software Foundation. |
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17 | * |
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18 | * RoarAudio is distributed in the hope that it will be useful, |
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19 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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20 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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21 | * GNU General Public License for more details. |
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22 | * |
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23 | * You should have received a copy of the GNU General Public License |
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24 | * along with this software; see the file COPYING. If not, write to |
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25 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. |
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26 | * |
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27 | * NOTE for everyone want's to change something and send patches: |
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28 | * read README and HACKING! There a addition information on |
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29 | * the license of this document you need to read before you send |
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30 | * any patches. |
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31 | * |
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32 | * NOTE for uses of non-GPL (LGPL,...) software using libesd, libartsc |
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33 | * or libpulse*: |
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34 | * The libs libroaresd, libroararts and libroarpulse link this libroar |
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35 | * and are therefore GPL. Because of this it may be illigal to use |
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36 | * them with any software that uses libesd, libartsc or libpulse*. |
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37 | */ |
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38 | |
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39 | #include <libroarpulse/libroarpulse.h> |
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40 | |
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41 | /** Return the binary file name of the current process. This is not |
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42 | * supported on all architectures, in which case NULL is returned. */ |
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43 | char *pa_get_binary_name(char *s, size_t l) { |
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44 | #ifdef __linux__ |
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45 | int ret; |
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46 | char path[PATH_MAX]; |
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47 | |
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48 | if ( (ret = readlink("/proc/self/exe", path, PATH_MAX-1)) != -1 ) { |
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49 | path[ret] = 0; |
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50 | return strncpy(s, pa_path_get_filename(path), l); |
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51 | } |
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52 | #endif |
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53 | |
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54 | return NULL; |
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55 | } |
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56 | |
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57 | /** Return a pointer to the filename inside a path (which is the last |
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58 | * component). */ |
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59 | // some versions declare this as const char * f(...) |
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60 | // and newer(?) versions as char * f(...)... |
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61 | ROAR_HAVE_TYPE_PA_PATH_GET_FILENAME pa_path_get_filename(const char *p) { |
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62 | char * r; |
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63 | |
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64 | if ( (r = strrchr(p, '/')) ) { |
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65 | return (const char *) r+1; |
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66 | } else { |
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67 | return p; |
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68 | } |
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69 | |
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70 | } |
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71 | |
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72 | /** Return the current username in the specified string buffer. */ |
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73 | char *pa_get_user_name(char *s, size_t l); |
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74 | |
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75 | /** Return the current hostname in the specified buffer. */ |
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76 | char *pa_get_host_name(char *s, size_t l); |
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77 | |
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78 | /** Return the fully qualified domain name in s */ |
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79 | char *pa_get_fqdn(char *s, size_t l); |
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80 | |
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81 | /** Return the home directory of the current user */ |
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82 | char *pa_get_home_dir(char *s, size_t l) { |
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83 | char * home = getenv("HOME"); |
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84 | |
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85 | if ( home == NULL ) |
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86 | return NULL; |
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87 | |
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88 | strncpy(s, home, l); |
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89 | |
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90 | s[l-1] = 0; |
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91 | |
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92 | return s; |
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93 | } |
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94 | |
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95 | /** Wait t milliseconds */ |
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96 | int pa_msleep(unsigned long t) { |
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97 | #ifdef ROAR_TARGET_WIN32 |
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98 | Sleep(t); |
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99 | #else |
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100 | usleep(1000*t); |
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101 | #endif |
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102 | return 0; |
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103 | } |
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104 | |
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105 | /* Format the specified data as a hexademical string */ |
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106 | char *pa_hexstr(const uint8_t* d, size_t dlength, char *s, size_t slength) { |
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107 | const char table[] = "0123456789abcdef"; |
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108 | char * p = s; |
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109 | size_t i; |
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110 | |
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111 | for (i = 0; i < dlength && slength > 2; i++, slength -= 2, d++) { |
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112 | *(p++) = table[*d >> 4]; |
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113 | *(p++) = table[*d & 0x0F]; |
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114 | } |
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115 | |
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116 | *p = 0; |
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117 | |
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118 | return s; |
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119 | } |
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120 | |
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121 | /* Parse a hexadecimal string as created by pa_hexstr() to a BLOB */ |
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122 | size_t pa_parsehex(const char *p, uint8_t *d, size_t dlength) { |
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123 | size_t have = 0; |
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124 | register int low_nibble = 0; |
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125 | register char c; |
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126 | |
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127 | if ( dlength == 0 ) |
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128 | return 0; |
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129 | |
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130 | for (; (c = *p); p++) { |
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131 | if ( c >= '0' && c <= '9' ) { |
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132 | c -= '0'; |
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133 | } else if ( c >= 'a' && c <= 'f' ) { |
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134 | c -= 'a' - 10; |
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135 | } else if ( c >= 'A' && c <= 'F' ) { |
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136 | c -= 'A' - 10; |
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137 | } else { |
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138 | return (size_t)-1; |
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139 | } |
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140 | |
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141 | if ( low_nibble ) { |
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142 | *d |= c & 0x0F; |
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143 | low_nibble = 0; |
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144 | |
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145 | d++; |
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146 | have++; |
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147 | dlength--; |
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148 | |
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149 | if ( dlength == 0 ) |
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150 | return have; |
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151 | } else { |
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152 | *d = (c & 0x0F) << 4; |
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153 | low_nibble = 1; |
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154 | } |
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155 | } |
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156 | |
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157 | return have; |
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158 | } |
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159 | |
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160 | |
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161 | //ll |
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