Mercurial > hg > xmms-sid
annotate src/xs_support.c @ 895:b6e069c9c000
Move stuff around a bit.
author | Matti Hamalainen <ccr@tnsp.org> |
---|---|
date | Fri, 09 Nov 2012 08:22:41 +0200 |
parents | 4697c5bd7025 |
children | b928b8a9c5bf |
rev | line source |
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4 | 1 /* |
2 XMMS-SID - SIDPlay input plugin for X MultiMedia System (XMMS) | |
3 | |
4 Miscellaneous support functions | |
5 | |
324 | 6 Programmed and designed by Matti 'ccr' Hamalainen <ccr@tnsp.org> |
723 | 7 (C) Copyright 1999-2009 Tecnic Software productions (TNSP) |
4 | 8 |
9 This program is free software; you can redistribute it and/or modify | |
10 it under the terms of the GNU General Public License as published by | |
11 the Free Software Foundation; either version 2 of the License, or | |
12 (at your option) any later version. | |
13 | |
14 This program is distributed in the hope that it will be useful, | |
15 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 GNU General Public License for more details. | |
18 | |
412
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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. |
772 | 22 |
23 -- | |
24 Except for the MD5 related functionality at the end of this file. | |
25 -- | |
4 | 26 */ |
49
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27 #include "xs_support.h" |
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28 #include <stdarg.h> |
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29 #include <ctype.h> |
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30 #ifndef __AUDACIOUS_NEWVFS__ |
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31 #include <sys/types.h> |
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32 #include <sys/stat.h> |
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33 #include <unistd.h> |
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34 #endif |
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35 |
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36 /* Error messages |
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37 */ |
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38 void xs_error(const char *fmt, ...) |
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39 { |
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40 va_list ap; |
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41 fprintf(stderr, "XMMS-SID: "); |
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42 va_start(ap, fmt); |
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43 vfprintf(stderr, fmt, ap); |
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44 va_end(ap); |
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45 } |
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46 |
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47 #ifndef DEBUG_NP |
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48 void XSDEBUG(const char *fmt, ...) |
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49 { |
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50 #ifdef DEBUG |
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51 va_list ap; |
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52 fprintf(stderr, "XSDEBUG: "); |
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53 va_start(ap, fmt); |
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54 vfprintf(stderr, fmt, ap); |
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55 va_end(ap); |
887 | 56 #else |
57 (void) fmt; | |
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58 #endif |
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59 } |
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60 #endif |
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61 |
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62 |
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63 #ifndef __AUDACIOUS_NEWVFS__ |
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64 off_t xs_fsize(XSFile *f) |
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65 { |
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66 off_t pos; |
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67 if (fseeko(f, 0, SEEK_END) < 0) |
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68 return -1; |
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69 |
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70 pos = ftello(f); |
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71 |
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72 if (fseeko(f, 0, SEEK_SET) < 0) |
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73 return -1; |
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74 |
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75 return pos; |
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76 } |
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77 #endif |
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78 |
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79 |
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80 gboolean xs_is_dir_path(const gchar *path) |
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81 { |
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82 #ifndef __AUDACIOUS_NEWVFS__ |
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83 struct stat sb; |
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84 if (stat(path, &sb) < 0) |
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85 return FALSE; |
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86 |
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87 return (S_ISDIR(sb.st_mode)); |
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88 #else |
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89 // XXX |
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90 #endif |
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91 } |
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92 |
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93 |
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94 gchar *xs_get_dir_path(const gchar *path) |
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95 { |
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96 #ifndef __AUDACIOUS_NEWVFS__ |
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97 if (!xs_is_dir_path(path)) |
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98 return g_dirname(path); |
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99 else |
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100 return g_strdup(path); |
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101 #else |
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102 // XXX |
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103 #endif |
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104 } |
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105 |
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106 |
751 | 107 guint16 xs_fread_be16(XSFile *f) |
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108 { |
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109 return (((guint16) xs_fgetc(f)) << 8) | ((guint16) xs_fgetc(f)); |
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110 } |
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111 |
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112 |
751 | 113 guint32 xs_fread_be32(XSFile *f) |
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114 { |
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115 return |
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116 (((guint32) xs_fgetc(f)) << 24) | |
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117 (((guint32) xs_fgetc(f)) << 16) | |
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118 (((guint32) xs_fgetc(f)) << 8) | |
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119 ((guint32) xs_fgetc(f)); |
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120 } |
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121 |
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122 |
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123 /* Load a file to a buffer, return 0 on success, negative value on error |
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124 */ |
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125 gboolean xs_fload_buffer(const gchar *filename, |
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126 guint8 **pbuf, size_t *bufSize, const size_t maxSize, gboolean failMaxSize) |
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127 { |
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128 XSFile *fp = NULL; |
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129 size_t readSize = 0, fileSize = 0; |
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130 gboolean res = FALSE; |
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131 |
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132 if (filename == NULL) |
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133 return FALSE; |
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134 |
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135 if ((fp = xs_fopen(filename, "rb")) == NULL) |
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136 { |
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137 xs_error("Could not open '%s' for reading.\n", filename); |
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138 goto error; |
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139 } |
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140 |
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141 fileSize = xs_fsize(fp); |
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142 if (failMaxSize && fileSize > maxSize) |
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143 { |
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144 xs_error("File '%s' size %d exceeds maxSize %d.\n", |
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145 fileSize, maxSize); |
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146 goto error; |
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147 } |
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148 |
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149 readSize = fileSize < maxSize ? fileSize : maxSize; |
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150 |
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151 if ((*pbuf = (guint8 *) g_malloc(readSize * sizeof(guint8))) == NULL) |
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152 { |
867
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153 xs_error("Could not allocate %d bytes for filebuffer '%s'.\n", |
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154 readSize, filename); |
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155 goto error; |
660
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156 } |
867
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157 |
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158 *bufSize = xs_fread(*pbuf, sizeof(guint8), readSize, fp); |
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159 res = (readSize == *bufSize); |
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160 |
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161 error: |
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162 if (fp != NULL) |
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163 xs_fclose(fp); |
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164 |
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165 if (!res) |
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166 { |
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167 xs_error("File '%s', expected %d bytes, read %d bytes.\n", |
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168 readSize, *bufSize); |
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169 } |
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170 |
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171 return res; |
527
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172 } |
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173 |
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174 |
867
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175 gboolean xs_fload_buffer_path(const gchar *ppath, const gchar *pfilename, |
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176 guint8 **pbuf, size_t *bufSize, const size_t maxSize, gboolean failMaxSize) |
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177 { |
889 | 178 gchar *filename, *pseparator; |
867
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179 gboolean res; |
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180 |
889 | 181 if (pfilename == NULL) |
182 return FALSE; | |
183 | |
184 pseparator = ppath != NULL ? ((ppath[strlen(ppath)] != '/') ? "/" : "") : ""; | |
185 filename = g_strdup_printf("%s%s%s", ppath, pseparator, pfilename); | |
186 | |
867
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187 if (filename == NULL) |
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188 return FALSE; |
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189 |
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190 res = xs_fload_buffer(filename, pbuf, bufSize, maxSize, failMaxSize); |
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191 |
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192 g_free(filename); |
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193 return res; |
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194 } |
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195 |
889 | 196 |
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197 /* |
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198 * MD5 implementation, modified for XMMS-SID from |
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199 * Colin Plumb's implementation by Matti 'ccr' Hämäläinen. |
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200 * |
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201 * This code implements the MD5 message-digest algorithm. |
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202 * The algorithm is due to Ron Rivest. This code was |
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203 * written by Colin Plumb in 1993, no copyright is claimed. |
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204 * This code is in the public domain; do with it what you wish. |
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205 */ |
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206 |
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207 #if G_BYTE_ORDER == G_LITTLE_ENDIAN |
772 | 208 # define xs_md5_bytereverse(buf, len) /* Nothing */ |
209 #elif G_BYTE_ORDER == G_BIG_ENDIAN | |
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210 static void xs_md5_bytereverse(guint8 *buf, guint l) |
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211 { |
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212 guint32 t; |
868 | 213 do |
214 { | |
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215 t = (guint32) ((guint) buf[3] << 8 | buf[2]) << 16 | ((guint) buf[1] << 8 | buf[0]); |
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216 *(guint32 *) buf = t; |
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217 buf += sizeof(guint32); |
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218 } while (--l); |
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219 } |
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220 #else |
772 | 221 # error Unsupported endianess! |
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222 #endif |
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223 |
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224 |
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225 /* Start MD5 accumulation. Set bit count to 0 and buffer to mysterious |
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226 * initialization constants. |
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227 */ |
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228 void xs_md5_init(xs_md5state_t *ctx) |
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229 { |
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230 ctx->buf[0] = 0x67452301; |
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231 ctx->buf[1] = 0xefcdab89; |
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232 ctx->buf[2] = 0x98badcfe; |
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233 ctx->buf[3] = 0x10325476; |
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234 |
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235 ctx->bits[0] = 0; |
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236 ctx->bits[1] = 0; |
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237 } |
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238 |
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239 |
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240 /* The core of the MD5 algorithm, this alters an existing MD5 hash to |
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241 * reflect the addition of 16 longwords of new data. xs_md5_update blocks |
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242 * the data and converts bytes into longwords for this routine. |
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243 */ |
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244 #define F1(x, y, z) (z ^ (x & (y ^ z))) |
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245 #define F2(x, y, z) F1(z, x, y) |
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246 #define F3(x, y, z) (x ^ y ^ z) |
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247 #define F4(x, y, z) (y ^ (x | ~z)) |
868 | 248 #define MD5STEP(f, w, x, y, z, data, s) ( w += f(x, y, z) + data, w = w<<s | w>>(32-s), w += x ) |
771
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249 |
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250 static void xs_md5_transform(guint32 buf[4], guint32 const in[16]) |
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251 { |
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252 register guint32 a, b, c, d; |
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253 |
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254 a = buf[0]; |
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255 b = buf[1]; |
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256 c = buf[2]; |
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257 d = buf[3]; |
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258 |
772 | 259 MD5STEP(F1, a, b, c, d, in[ 0] + 0xd76aa478, 7); |
260 MD5STEP(F1, d, a, b, c, in[ 1] + 0xe8c7b756, 12); | |
261 MD5STEP(F1, c, d, a, b, in[ 2] + 0x242070db, 17); | |
262 MD5STEP(F1, b, c, d, a, in[ 3] + 0xc1bdceee, 22); | |
263 MD5STEP(F1, a, b, c, d, in[ 4] + 0xf57c0faf, 7); | |
264 MD5STEP(F1, d, a, b, c, in[ 5] + 0x4787c62a, 12); | |
265 MD5STEP(F1, c, d, a, b, in[ 6] + 0xa8304613, 17); | |
266 MD5STEP(F1, b, c, d, a, in[ 7] + 0xfd469501, 22); | |
267 MD5STEP(F1, a, b, c, d, in[ 8] + 0x698098d8, 7); | |
268 MD5STEP(F1, d, a, b, c, in[ 9] + 0x8b44f7af, 12); | |
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269 MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17); |
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270 MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22); |
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271 MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7); |
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272 MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12); |
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273 MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17); |
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274 MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22); |
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275 |
772 | 276 MD5STEP(F2, a, b, c, d, in[ 1] + 0xf61e2562, 5); |
277 MD5STEP(F2, d, a, b, c, in[ 6] + 0xc040b340, 9); | |
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278 MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14); |
772 | 279 MD5STEP(F2, b, c, d, a, in[ 0] + 0xe9b6c7aa, 20); |
280 MD5STEP(F2, a, b, c, d, in[ 5] + 0xd62f105d, 5); | |
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281 MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9); |
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282 MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14); |
772 | 283 MD5STEP(F2, b, c, d, a, in[ 4] + 0xe7d3fbc8, 20); |
284 MD5STEP(F2, a, b, c, d, in[ 9] + 0x21e1cde6, 5); | |
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285 MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9); |
772 | 286 MD5STEP(F2, c, d, a, b, in[ 3] + 0xf4d50d87, 14); |
287 MD5STEP(F2, b, c, d, a, in[ 8] + 0x455a14ed, 20); | |
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288 MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5); |
772 | 289 MD5STEP(F2, d, a, b, c, in[ 2] + 0xfcefa3f8, 9); |
290 MD5STEP(F2, c, d, a, b, in[ 7] + 0x676f02d9, 14); | |
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291 MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20); |
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292 |
772 | 293 MD5STEP(F3, a, b, c, d, in[ 5] + 0xfffa3942, 4); |
294 MD5STEP(F3, d, a, b, c, in[ 8] + 0x8771f681, 11); | |
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295 MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16); |
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296 MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23); |
772 | 297 MD5STEP(F3, a, b, c, d, in[ 1] + 0xa4beea44, 4); |
298 MD5STEP(F3, d, a, b, c, in[ 4] + 0x4bdecfa9, 11); | |
299 MD5STEP(F3, c, d, a, b, in[ 7] + 0xf6bb4b60, 16); | |
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300 MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23); |
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301 MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4); |
772 | 302 MD5STEP(F3, d, a, b, c, in[ 0] + 0xeaa127fa, 11); |
303 MD5STEP(F3, c, d, a, b, in[ 3] + 0xd4ef3085, 16); | |
304 MD5STEP(F3, b, c, d, a, in[ 6] + 0x04881d05, 23); | |
305 MD5STEP(F3, a, b, c, d, in[ 9] + 0xd9d4d039, 4); | |
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306 MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11); |
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307 MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16); |
772 | 308 MD5STEP(F3, b, c, d, a, in[ 2] + 0xc4ac5665, 23); |
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309 |
772 | 310 MD5STEP(F4, a, b, c, d, in[ 0] + 0xf4292244, 6); |
311 MD5STEP(F4, d, a, b, c, in[ 7] + 0x432aff97, 10); | |
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312 MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15); |
772 | 313 MD5STEP(F4, b, c, d, a, in[ 5] + 0xfc93a039, 21); |
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314 MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6); |
772 | 315 MD5STEP(F4, d, a, b, c, in[ 3] + 0x8f0ccc92, 10); |
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316 MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15); |
772 | 317 MD5STEP(F4, b, c, d, a, in[ 1] + 0x85845dd1, 21); |
318 MD5STEP(F4, a, b, c, d, in[ 8] + 0x6fa87e4f, 6); | |
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319 MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10); |
772 | 320 MD5STEP(F4, c, d, a, b, in[ 6] + 0xa3014314, 15); |
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321 MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21); |
772 | 322 MD5STEP(F4, a, b, c, d, in[ 4] + 0xf7537e82, 6); |
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323 MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10); |
772 | 324 MD5STEP(F4, c, d, a, b, in[ 2] + 0x2ad7d2bb, 15); |
325 MD5STEP(F4, b, c, d, a, in[ 9] + 0xeb86d391, 21); | |
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326 |
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327 buf[0] += a; |
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328 buf[1] += b; |
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329 buf[2] += c; |
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330 buf[3] += d; |
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331 } |
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332 |
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333 |
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334 /* Update context to reflect the concatenation of another buffer full |
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335 * of bytes. |
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336 */ |
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337 void xs_md5_append(xs_md5state_t *ctx, const guint8 *buf, guint len) |
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338 { |
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339 guint32 t; |
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340 |
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341 /* Update bitcount */ |
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342 t = ctx->bits[0]; |
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343 if ((ctx->bits[0] = t + ((guint32) len << 3)) < t) |
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344 ctx->bits[1]++; /* Carry from low to high */ |
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345 ctx->bits[1] += len >> 29; |
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346 |
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347 t = (t >> 3) & 0x3f; /* Bytes already in shsInfo->data */ |
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348 |
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349 /* Handle any leading odd-sized chunks */ |
868 | 350 if (t) |
351 { | |
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352 guint8 *p = (guint8 *) ctx->in + t; |
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353 |
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354 t = 64 - t; |
868 | 355 if (len < t) |
356 { | |
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357 memcpy(p, buf, len); |
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358 return; |
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359 } |
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360 memcpy(p, buf, t); |
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361 xs_md5_bytereverse(ctx->in, 16); |
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362 xs_md5_transform(ctx->buf, (guint32 *) ctx->in); |
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363 buf += t; |
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364 len -= t; |
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365 } |
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366 |
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367 /* Process data in 64-byte chunks */ |
868 | 368 while (len >= 64) |
369 { | |
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370 memcpy(ctx->in, buf, 64); |
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371 xs_md5_bytereverse(ctx->in, 16); |
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372 xs_md5_transform(ctx->buf, (guint32 *) ctx->in); |
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373 buf += 64; |
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374 len -= 64; |
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375 } |
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376 |
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377 /* Handle any remaining bytes of data. */ |
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378 memcpy(ctx->in, buf, len); |
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379 } |
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380 |
868 | 381 |
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382 /* Final wrapup - pad to 64-byte boundary with the bit pattern |
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383 * 1 0* (64-bit count of bits processed, MSB-first) |
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384 */ |
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385 void xs_md5_finish(xs_md5state_t *ctx, xs_md5hash_t digest) |
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386 { |
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387 guint count; |
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388 guint8 *p; |
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389 |
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390 /* Compute number of bytes mod 64 */ |
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391 count = (ctx->bits[0] >> 3) & 0x3F; |
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392 |
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393 /* Set the first char of padding to 0x80. This is safe since there is |
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394 always at least one byte free */ |
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395 p = ctx->in + count; |
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396 *p++ = 0x80; |
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397 |
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398 /* Bytes of padding needed to make 64 bytes */ |
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399 count = 64 - 1 - count; |
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400 |
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401 /* Pad out to 56 mod 64 */ |
868 | 402 if (count < 8) |
403 { | |
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404 /* Two lots of padding: Pad the first block to 64 bytes */ |
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405 memset(p, 0, count); |
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406 xs_md5_bytereverse(ctx->in, 16); |
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407 xs_md5_transform(ctx->buf, (guint32 *) ctx->in); |
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408 |
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409 /* Now fill the next block with 56 bytes */ |
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410 memset(ctx->in, 0, 56); |
868 | 411 } |
412 else | |
413 { | |
771
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414 /* Pad block to 56 bytes */ |
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415 memset(p, 0, count - 8); |
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416 } |
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417 xs_md5_bytereverse(ctx->in, 14); |
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418 |
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419 /* Append length in bits and transform */ |
792
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420 memcpy(((guint32 *) ctx->in) + 14, &ctx->bits[0], sizeof(guint32)); |
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421 memcpy(((guint32 *) ctx->in) + 15, &ctx->bits[1], sizeof(guint32)); |
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422 |
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423 xs_md5_transform(ctx->buf, (guint32 *) ctx->in); |
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424 xs_md5_bytereverse((guint8 *) ctx->buf, 4); |
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425 memcpy(digest, ctx->buf, 16); |
895 | 426 memset(ctx, 0, sizeof(ctx)); |
427 } | |
428 | |
429 | |
430 /* Copy a given string over in *result. | |
431 */ | |
432 gint xs_pstrcpy(gchar **result, const gchar *str) | |
433 { | |
434 /* Check the string pointers */ | |
435 if (!result || !str) | |
436 return -1; | |
437 | |
438 /* Allocate memory for destination */ | |
439 g_free(*result); | |
440 | |
441 *result = (gchar *) g_malloc(strlen(str) + 1); | |
442 if (!*result) | |
443 return -2; | |
444 | |
445 /* Copy to the destination */ | |
446 strcpy(*result, str); | |
447 | |
448 return 0; | |
449 } | |
450 | |
451 | |
452 /* Concatenates a given string into string pointed by *result. | |
453 */ | |
454 gint xs_pstrcat(gchar **result, const gchar *str) | |
455 { | |
456 /* Check the string pointers */ | |
457 if (!result || !str) | |
458 return -1; | |
459 | |
460 if (*result != NULL) | |
461 { | |
462 *result = (gchar *) g_realloc(*result, strlen(*result) + strlen(str) + 1); | |
463 if (*result == NULL) | |
464 return -1; | |
465 strcat(*result, str); | |
466 } | |
467 else | |
468 { | |
469 *result = (gchar *) g_malloc(strlen(str) + 1); | |
470 if (*result == NULL) | |
471 return -1; | |
472 strcpy(*result, str); | |
473 } | |
474 | |
475 return 0; | |
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476 } |
895 | 477 |
478 | |
479 /* Concatenate a given string up to given dest size or \n. | |
480 * If size max is reached, change the end to "..." | |
481 */ | |
482 void xs_pnstrcat(gchar *dest, const size_t size, const gchar *str) | |
483 { | |
484 size_t i, n; | |
485 const gchar *s; | |
486 gchar *d; | |
487 | |
488 for (d = dest, i = 0; *d && i < size; i++, d++); | |
489 | |
490 s = str; | |
491 while (*s && *s != '\n' && i < size) | |
492 { | |
493 *d = *s; | |
494 d++; | |
495 s++; | |
496 i++; | |
497 } | |
498 | |
499 *d = 0; | |
500 | |
501 if (i >= size) | |
502 { | |
503 i--; | |
504 d--; | |
505 for (n = 3; i > 0 && n > 0; d--, i--, n--) | |
506 *d = '.'; | |
507 } | |
508 } | |
509 | |
510 | |
511 /* Locate character in string | |
512 */ | |
513 void xs_findnext(const gchar *str, size_t *pos) | |
514 { | |
515 while (str[*pos] && isspace(str[*pos])) | |
516 (*pos)++; | |
517 } | |
518 | |
519 | |
520 void xs_findeol(const gchar *str, size_t *pos) | |
521 { | |
522 while (str[*pos] && (str[*pos] != '\n') && (str[*pos] != '\r')) | |
523 (*pos)++; | |
524 } | |
525 | |
526 | |
527 void xs_findnum(const gchar *str, size_t *pos) | |
528 { | |
529 while (str[*pos] && isdigit(str[*pos])) | |
530 (*pos)++; | |
531 } | |
532 | |
533 |