annotate src/xs_support.c @ 772:91a36a4b79c6

Cosmetics.
author Matti Hamalainen <ccr@tnsp.org>
date Tue, 06 Nov 2012 11:26:59 +0200
parents 469b341734b2
children bee1f36efc16
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1 /*
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2 XMMS-SID - SIDPlay input plugin for X MultiMedia System (XMMS)
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3
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4 Miscellaneous support functions
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5
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6 Programmed and designed by Matti 'ccr' Hamalainen <ccr@tnsp.org>
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7 (C) Copyright 1999-2009 Tecnic Software productions (TNSP)
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8
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9 This program is free software; you can redistribute it and/or modify
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10 it under the terms of the GNU General Public License as published by
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11 the Free Software Foundation; either version 2 of the License, or
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12 (at your option) any later version.
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13
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14 This program is distributed in the hope that it will be useful,
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15 but WITHOUT ANY WARRANTY; without even the implied warranty of
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16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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17 GNU General Public License for more details.
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18
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19 You should have received a copy of the GNU General Public License along
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20 with this program; if not, write to the Free Software Foundation, Inc.,
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21 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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22
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23 --
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24 Except for the MD5 related functionality at the end of this file.
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25 --
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26 */
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27 #include "xs_support.h"
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28 #include <ctype.h>
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29 #include <glib.h>
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30
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31
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32 guint16 xs_fread_be16(XSFile *f)
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33 {
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34 return (((guint16) xs_fgetc(f)) << 8) | ((guint16) xs_fgetc(f));
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35 }
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36
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37
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38 guint32 xs_fread_be32(XSFile *f)
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39 {
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40 return
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41 (((guint32) xs_fgetc(f)) << 24) |
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42 (((guint32) xs_fgetc(f)) << 16) |
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43 (((guint32) xs_fgetc(f)) << 8) |
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44 ((guint32) xs_fgetc(f));
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45 }
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47
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48 /* Load a file to a buffer, return 0 on success, negative value on error
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49 */
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50 gint xs_fload_buffer(const gchar *filename, guint8 **buf, size_t *bufSize)
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51 {
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52 XSFile *f;
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53 glong seekPos;
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54
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55 if (filename == NULL)
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56 return -15;
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57
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58 if ((f = xs_fopen(filename, "rb")) == NULL)
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59 return -1;
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60
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61 xs_fseek(f, 0, SEEK_END);
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62 seekPos = xs_ftell(f);
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63
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64 if (seekPos > 0)
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65 {
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66 size_t readSize = seekPos;
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67 if (readSize >= *bufSize || *buf == NULL)
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68 {
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69 /* Only re-allocate if the required size > current */
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70 if (*buf != NULL) {
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71 g_free(*buf);
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72 *buf = NULL;
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73 }
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74
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75 *bufSize = seekPos;
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76
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77 *buf = (guint8 *) g_malloc(*bufSize * sizeof(guint8));
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78 if (*buf == NULL) {
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79 xs_fclose(f);
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80 return -2;
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81 }
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82 }
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83
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84 /* Read data */
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85 xs_fseek(f, 0, SEEK_SET);
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86 readSize = xs_fread(*buf, sizeof(guint8), *bufSize, f);
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87 xs_fclose(f);
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88
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89 if (readSize != *bufSize)
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90 return -3;
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91 else
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92 return 0;
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93 } else {
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94 xs_fclose(f);
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95 return -4;
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96 }
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97 }
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98
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99
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100 /* Copy a given string over in *result.
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101 */
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102 gint xs_pstrcpy(gchar **result, const gchar *str)
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103 {
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104 /* Check the string pointers */
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105 if (!result || !str)
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106 return -1;
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107
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108 /* Allocate memory for destination */
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109 if (*result)
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110 g_free(*result);
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111 *result = (gchar *) g_malloc(strlen(str) + 1);
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112 if (!*result)
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113 return -2;
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114
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115 /* Copy to the destination */
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116 strcpy(*result, str);
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117
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118 return 0;
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119 }
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120
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121
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122 /* Concatenates a given string into string pointed by *result.
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123 */
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124 gint xs_pstrcat(gchar **result, const gchar *str)
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125 {
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126 /* Check the string pointers */
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127 if (!result || !str)
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128 return -1;
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129
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130 if (*result != NULL) {
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131 *result = (gchar *) g_realloc(*result, strlen(*result) + strlen(str) + 1);
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132 if (*result == NULL)
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133 return -1;
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134 strcat(*result, str);
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135 } else {
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136 *result = (gchar *) g_malloc(strlen(str) + 1);
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137 if (*result == NULL)
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138 return -1;
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139 strcpy(*result, str);
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140 }
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141
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142 return 0;
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143 }
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144
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145
239
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146 /* Concatenate a given string up to given dest size or \n.
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147 * If size max is reached, change the end to "..."
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148 */
663
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diff changeset
149 void xs_pnstrcat(gchar *dest, size_t iSize, const gchar *str)
239
7833df935239 Added xs_pnstrcat() to ease forming of limited size strings.
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150 {
660
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151 size_t i, n;
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152 const gchar *s;
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153 gchar *d;
359
b1a858b8cb1a Re-indentation all (non-generated) code.
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154
663
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155 d = dest;
660
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156 i = 0;
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157 while (*d && (i < iSize)) {
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158 i++;
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159 d++;
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160 }
239
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diff changeset
161
663
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162 s = str;
660
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163 while (*s && (*s != '\n') && (i < iSize)) {
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164 *d = *s;
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165 d++;
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166 s++;
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167 i++;
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168 }
359
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169
660
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170 *d = 0;
239
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diff changeset
171
660
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172 if (i >= iSize) {
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173 i--;
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174 d--;
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175 n = 3;
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176 while ((i > 0) && (n > 0)) {
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177 *d = '.';
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178 d--;
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179 i--;
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180 n--;
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181 }
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182 }
239
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183 }
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184
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diff changeset
185
206
8b896d461fdb Trivial fixes and added strncpy replacement.
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parents: 202
diff changeset
186 /* Locate character in string
8b896d461fdb Trivial fixes and added strncpy replacement.
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187 */
663
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diff changeset
188 void xs_findnext(const gchar *str, size_t *pos)
4
4bb09e405eab Added new files for 0.8
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parents:
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189 {
663
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190 while (str[*pos] && isspace(str[*pos]))
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191 (*pos)++;
4
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192 }
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193
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parents:
diff changeset
194
663
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diff changeset
195 void xs_findeol(const gchar *str, size_t *pos)
4
4bb09e405eab Added new files for 0.8
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parents:
diff changeset
196 {
663
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197 while (str[*pos] && (str[*pos] != '\n') && (str[*pos] != '\r'))
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diff changeset
198 (*pos)++;
4
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199 }
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diff changeset
200
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parents:
diff changeset
201
663
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diff changeset
202 void xs_findnum(const gchar *str, size_t *pos)
109
578b71b62eeb Fileinfo now basically working, STIL COMMENT-fields are not yet parsed or shown.
Matti Hamalainen <ccr@tnsp.org>
parents: 87
diff changeset
203 {
663
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diff changeset
204 while (str[*pos] && isdigit(str[*pos]))
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diff changeset
205 (*pos)++;
109
578b71b62eeb Fileinfo now basically working, STIL COMMENT-fields are not yet parsed or shown.
Matti Hamalainen <ccr@tnsp.org>
parents: 87
diff changeset
206 }
771
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diff changeset
207
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diff changeset
208
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diff changeset
209 /*
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diff changeset
210 * MD5 implementation, modified for XMMS-SID from
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211 * Colin Plumb's implementation by Matti 'ccr' Hämäläinen.
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diff changeset
212 *
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diff changeset
213 * This code implements the MD5 message-digest algorithm.
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diff changeset
214 * The algorithm is due to Ron Rivest. This code was
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diff changeset
215 * written by Colin Plumb in 1993, no copyright is claimed.
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diff changeset
216 * This code is in the public domain; do with it what you wish.
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diff changeset
217 */
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218
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diff changeset
219 #if G_BYTE_ORDER == G_LITTLE_ENDIAN
772
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diff changeset
220 # define xs_md5_bytereverse(buf, len) /* Nothing */
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diff changeset
221 #elif G_BYTE_ORDER == G_BIG_ENDIAN
771
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diff changeset
222 static void xs_md5_bytereverse(guint8 *buf, guint l)
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diff changeset
223 {
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diff changeset
224 guint32 t;
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diff changeset
225 do {
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diff changeset
226 t = (guint32) ((guint) buf[3] << 8 | buf[2]) << 16 | ((guint) buf[1] << 8 | buf[0]);
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diff changeset
227 *(guint32 *) buf = t;
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diff changeset
228 buf += sizeof(guint32);
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diff changeset
229 } while (--l);
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diff changeset
230 }
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
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diff changeset
231 #else
772
91a36a4b79c6 Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
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diff changeset
232 # error Unsupported endianess!
771
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diff changeset
233 #endif
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
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diff changeset
234
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diff changeset
235
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diff changeset
236 /* Start MD5 accumulation. Set bit count to 0 and buffer to mysterious
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diff changeset
237 * initialization constants.
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diff changeset
238 */
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
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parents: 763
diff changeset
239 void xs_md5_init(xs_md5state_t *ctx)
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
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parents: 763
diff changeset
240 {
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
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parents: 763
diff changeset
241 ctx->buf[0] = 0x67452301;
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Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
242 ctx->buf[1] = 0xefcdab89;
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parents: 763
diff changeset
243 ctx->buf[2] = 0x98badcfe;
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diff changeset
244 ctx->buf[3] = 0x10325476;
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
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diff changeset
245
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
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diff changeset
246 ctx->bits[0] = 0;
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
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diff changeset
247 ctx->bits[1] = 0;
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
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diff changeset
248 }
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
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diff changeset
249
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
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diff changeset
250
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
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parents: 763
diff changeset
251 /* The core of the MD5 algorithm, this alters an existing MD5 hash to
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parents: 763
diff changeset
252 * reflect the addition of 16 longwords of new data. xs_md5_update blocks
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diff changeset
253 * the data and converts bytes into longwords for this routine.
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diff changeset
254 */
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
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diff changeset
255 #define F1(x, y, z) (z ^ (x & (y ^ z)))
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
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diff changeset
256 #define F2(x, y, z) F1(z, x, y)
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diff changeset
257 #define F3(x, y, z) (x ^ y ^ z)
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diff changeset
258 #define F4(x, y, z) (y ^ (x | ~z))
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diff changeset
259 #define MD5STEP(f, w, x, y, z, data, s) \
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
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diff changeset
260 ( w += f(x, y, z) + data, w = w<<s | w>>(32-s), w += x )
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diff changeset
261
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
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diff changeset
262 static void xs_md5_transform(guint32 buf[4], guint32 const in[16])
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diff changeset
263 {
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
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diff changeset
264 register guint32 a, b, c, d;
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diff changeset
265
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diff changeset
266 a = buf[0];
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diff changeset
267 b = buf[1];
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diff changeset
268 c = buf[2];
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diff changeset
269 d = buf[3];
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diff changeset
270
772
91a36a4b79c6 Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
parents: 771
diff changeset
271 MD5STEP(F1, a, b, c, d, in[ 0] + 0xd76aa478, 7);
91a36a4b79c6 Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
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diff changeset
272 MD5STEP(F1, d, a, b, c, in[ 1] + 0xe8c7b756, 12);
91a36a4b79c6 Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
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diff changeset
273 MD5STEP(F1, c, d, a, b, in[ 2] + 0x242070db, 17);
91a36a4b79c6 Cosmetics.
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diff changeset
274 MD5STEP(F1, b, c, d, a, in[ 3] + 0xc1bdceee, 22);
91a36a4b79c6 Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
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diff changeset
275 MD5STEP(F1, a, b, c, d, in[ 4] + 0xf57c0faf, 7);
91a36a4b79c6 Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
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diff changeset
276 MD5STEP(F1, d, a, b, c, in[ 5] + 0x4787c62a, 12);
91a36a4b79c6 Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
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diff changeset
277 MD5STEP(F1, c, d, a, b, in[ 6] + 0xa8304613, 17);
91a36a4b79c6 Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
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diff changeset
278 MD5STEP(F1, b, c, d, a, in[ 7] + 0xfd469501, 22);
91a36a4b79c6 Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
parents: 771
diff changeset
279 MD5STEP(F1, a, b, c, d, in[ 8] + 0x698098d8, 7);
91a36a4b79c6 Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
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diff changeset
280 MD5STEP(F1, d, a, b, c, in[ 9] + 0x8b44f7af, 12);
771
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diff changeset
281 MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17);
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diff changeset
282 MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22);
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diff changeset
283 MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7);
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diff changeset
284 MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12);
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
285 MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17);
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
286 MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22);
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
287
772
91a36a4b79c6 Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
parents: 771
diff changeset
288 MD5STEP(F2, a, b, c, d, in[ 1] + 0xf61e2562, 5);
91a36a4b79c6 Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
parents: 771
diff changeset
289 MD5STEP(F2, d, a, b, c, in[ 6] + 0xc040b340, 9);
771
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
290 MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14);
772
91a36a4b79c6 Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
parents: 771
diff changeset
291 MD5STEP(F2, b, c, d, a, in[ 0] + 0xe9b6c7aa, 20);
91a36a4b79c6 Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
parents: 771
diff changeset
292 MD5STEP(F2, a, b, c, d, in[ 5] + 0xd62f105d, 5);
771
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
293 MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9);
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
294 MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14);
772
91a36a4b79c6 Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
parents: 771
diff changeset
295 MD5STEP(F2, b, c, d, a, in[ 4] + 0xe7d3fbc8, 20);
91a36a4b79c6 Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
parents: 771
diff changeset
296 MD5STEP(F2, a, b, c, d, in[ 9] + 0x21e1cde6, 5);
771
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
297 MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9);
772
91a36a4b79c6 Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
parents: 771
diff changeset
298 MD5STEP(F2, c, d, a, b, in[ 3] + 0xf4d50d87, 14);
91a36a4b79c6 Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
parents: 771
diff changeset
299 MD5STEP(F2, b, c, d, a, in[ 8] + 0x455a14ed, 20);
771
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
300 MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5);
772
91a36a4b79c6 Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
parents: 771
diff changeset
301 MD5STEP(F2, d, a, b, c, in[ 2] + 0xfcefa3f8, 9);
91a36a4b79c6 Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
parents: 771
diff changeset
302 MD5STEP(F2, c, d, a, b, in[ 7] + 0x676f02d9, 14);
771
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
303 MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20);
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
304
772
91a36a4b79c6 Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
parents: 771
diff changeset
305 MD5STEP(F3, a, b, c, d, in[ 5] + 0xfffa3942, 4);
91a36a4b79c6 Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
parents: 771
diff changeset
306 MD5STEP(F3, d, a, b, c, in[ 8] + 0x8771f681, 11);
771
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
307 MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16);
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
308 MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23);
772
91a36a4b79c6 Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
parents: 771
diff changeset
309 MD5STEP(F3, a, b, c, d, in[ 1] + 0xa4beea44, 4);
91a36a4b79c6 Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
parents: 771
diff changeset
310 MD5STEP(F3, d, a, b, c, in[ 4] + 0x4bdecfa9, 11);
91a36a4b79c6 Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
parents: 771
diff changeset
311 MD5STEP(F3, c, d, a, b, in[ 7] + 0xf6bb4b60, 16);
771
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
312 MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23);
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
313 MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4);
772
91a36a4b79c6 Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
parents: 771
diff changeset
314 MD5STEP(F3, d, a, b, c, in[ 0] + 0xeaa127fa, 11);
91a36a4b79c6 Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
parents: 771
diff changeset
315 MD5STEP(F3, c, d, a, b, in[ 3] + 0xd4ef3085, 16);
91a36a4b79c6 Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
parents: 771
diff changeset
316 MD5STEP(F3, b, c, d, a, in[ 6] + 0x04881d05, 23);
91a36a4b79c6 Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
parents: 771
diff changeset
317 MD5STEP(F3, a, b, c, d, in[ 9] + 0xd9d4d039, 4);
771
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
318 MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11);
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
319 MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16);
772
91a36a4b79c6 Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
parents: 771
diff changeset
320 MD5STEP(F3, b, c, d, a, in[ 2] + 0xc4ac5665, 23);
771
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
321
772
91a36a4b79c6 Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
parents: 771
diff changeset
322 MD5STEP(F4, a, b, c, d, in[ 0] + 0xf4292244, 6);
91a36a4b79c6 Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
parents: 771
diff changeset
323 MD5STEP(F4, d, a, b, c, in[ 7] + 0x432aff97, 10);
771
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
324 MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15);
772
91a36a4b79c6 Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
parents: 771
diff changeset
325 MD5STEP(F4, b, c, d, a, in[ 5] + 0xfc93a039, 21);
771
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
326 MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6);
772
91a36a4b79c6 Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
parents: 771
diff changeset
327 MD5STEP(F4, d, a, b, c, in[ 3] + 0x8f0ccc92, 10);
771
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
328 MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15);
772
91a36a4b79c6 Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
parents: 771
diff changeset
329 MD5STEP(F4, b, c, d, a, in[ 1] + 0x85845dd1, 21);
91a36a4b79c6 Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
parents: 771
diff changeset
330 MD5STEP(F4, a, b, c, d, in[ 8] + 0x6fa87e4f, 6);
771
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
331 MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);
772
91a36a4b79c6 Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
parents: 771
diff changeset
332 MD5STEP(F4, c, d, a, b, in[ 6] + 0xa3014314, 15);
771
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
333 MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21);
772
91a36a4b79c6 Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
parents: 771
diff changeset
334 MD5STEP(F4, a, b, c, d, in[ 4] + 0xf7537e82, 6);
771
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
335 MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10);
772
91a36a4b79c6 Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
parents: 771
diff changeset
336 MD5STEP(F4, c, d, a, b, in[ 2] + 0x2ad7d2bb, 15);
91a36a4b79c6 Cosmetics.
Matti Hamalainen <ccr@tnsp.org>
parents: 771
diff changeset
337 MD5STEP(F4, b, c, d, a, in[ 9] + 0xeb86d391, 21);
771
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
338
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
339 buf[0] += a;
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
340 buf[1] += b;
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
341 buf[2] += c;
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
342 buf[3] += d;
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
343 }
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
344
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
345
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
346 /* Update context to reflect the concatenation of another buffer full
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
347 * of bytes.
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
348 */
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
349 void xs_md5_append(xs_md5state_t *ctx, const guint8 *buf, guint len)
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
350 {
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
351 guint32 t;
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
352
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
353 /* Update bitcount */
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
354 t = ctx->bits[0];
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
355 if ((ctx->bits[0] = t + ((guint32) len << 3)) < t)
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
356 ctx->bits[1]++; /* Carry from low to high */
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
357 ctx->bits[1] += len >> 29;
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
358
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
359 t = (t >> 3) & 0x3f; /* Bytes already in shsInfo->data */
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
360
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
361 /* Handle any leading odd-sized chunks */
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
362 if (t) {
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
363 guint8 *p = (guint8 *) ctx->in + t;
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
364
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
365 t = 64 - t;
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
366 if (len < t) {
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
367 memcpy(p, buf, len);
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
368 return;
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
369 }
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
370 memcpy(p, buf, t);
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
371 xs_md5_bytereverse(ctx->in, 16);
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
372 xs_md5_transform(ctx->buf, (guint32 *) ctx->in);
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
373 buf += t;
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
374 len -= t;
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
375 }
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
376
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
377 /* Process data in 64-byte chunks */
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
378 while (len >= 64) {
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
379 memcpy(ctx->in, buf, 64);
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
380 xs_md5_bytereverse(ctx->in, 16);
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
381 xs_md5_transform(ctx->buf, (guint32 *) ctx->in);
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
382 buf += 64;
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
383 len -= 64;
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
384 }
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
385
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
386 /* Handle any remaining bytes of data. */
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
387 memcpy(ctx->in, buf, len);
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
388 }
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
389
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
390 /* Final wrapup - pad to 64-byte boundary with the bit pattern
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
391 * 1 0* (64-bit count of bits processed, MSB-first)
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
392 */
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
393 void xs_md5_finish(xs_md5state_t *ctx, xs_md5hash_t digest)
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
394 {
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
395 guint count;
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
396 guint8 *p;
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
397
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
398 /* Compute number of bytes mod 64 */
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
399 count = (ctx->bits[0] >> 3) & 0x3F;
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
400
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
401 /* Set the first char of padding to 0x80. This is safe since there is
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
402 always at least one byte free */
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
403 p = ctx->in + count;
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404 *p++ = 0x80;
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
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parents: 763
diff changeset
405
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
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parents: 763
diff changeset
406 /* Bytes of padding needed to make 64 bytes */
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parents: 763
diff changeset
407 count = 64 - 1 - count;
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Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
408
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Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
409 /* Pad out to 56 mod 64 */
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
410 if (count < 8) {
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
411 /* Two lots of padding: Pad the first block to 64 bytes */
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
412 memset(p, 0, count);
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
413 xs_md5_bytereverse(ctx->in, 16);
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
414 xs_md5_transform(ctx->buf, (guint32 *) ctx->in);
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
415
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diff changeset
416 /* Now fill the next block with 56 bytes */
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parents: 763
diff changeset
417 memset(ctx->in, 0, 56);
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
418 } else {
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
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parents: 763
diff changeset
419 /* Pad block to 56 bytes */
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
420 memset(p, 0, count - 8);
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parents: 763
diff changeset
421 }
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
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parents: 763
diff changeset
422 xs_md5_bytereverse(ctx->in, 14);
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
423
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
424 /* Append length in bits and transform */
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
425 ((guint32 *) ctx->in)[14] = ctx->bits[0];
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Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
426 ((guint32 *) ctx->in)[15] = ctx->bits[1];
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
427
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
428 xs_md5_transform(ctx->buf, (guint32 *) ctx->in);
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
429 xs_md5_bytereverse((guint8 *) ctx->buf, 4);
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
430 memcpy(digest, ctx->buf, 16);
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
431 memset(ctx, 0, sizeof(ctx)); /* In case it's sensitive */
469b341734b2 Move MD5 implementation into xs_support, and some related Audacious
Matti Hamalainen <ccr@tnsp.org>
parents: 763
diff changeset
432 }