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1 | /* |
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2 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. |
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3 | * |
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4 | * Copyright 2019 Olaf Wintermann. All rights reserved. |
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5 | * |
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6 | * Redistribution and use in source and binary forms, with or without |
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7 | * modification, are permitted provided that the following conditions are met: |
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8 | * |
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9 | * 1. Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * |
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12 | * 2. Redistributions in binary form must reproduce the above copyright |
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13 | * notice, this list of conditions and the following disclaimer in the |
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14 | * documentation and/or other materials provided with the distribution. |
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15 | * |
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16 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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17 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
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20 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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23 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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24 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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25 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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26 | * POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |
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29 | #include "finfo.h" |
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30 | |
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31 | #include <stdio.h> |
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32 | #include <stdlib.h> |
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33 | #include <string.h> |
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34 | #include <unistd.h> |
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35 | #include <errno.h> |
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36 | #include <sys/stat.h> |
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37 | |
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38 | #include <ucx/string.h> |
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39 | #include <ucx/list.h> |
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40 | #include <libidav/crypto.h> |
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41 | #include <libidav/utils.h> |
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42 | |
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43 | #include "libxattr.h" |
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44 | |
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45 | uint32_t parse_finfo_settings(const char *str, char **error) { |
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46 | scstr_t s = scstr(str); |
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47 | |
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48 | if(!sstrcmp(s, SC("*")) || !sstrcmp(s, SC("a")) || !sstrcmp(s, SC("all"))) { |
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49 | return FINFO_DATE|FINFO_OWNER|FINFO_MODE; |
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50 | } |
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51 | |
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52 | ssize_t count = 0; |
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53 | sstr_t *fs = sstrsplit(s, SC(","), &count); |
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54 | |
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55 | char *err = NULL; |
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56 | |
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57 | uint32_t finfo = 0; |
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58 | for(int i=0;i<count;i++) { |
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59 | sstr_t f = fs[i]; |
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60 | if(!sstrcasecmp(f, SC("date"))) { |
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61 | finfo |= FINFO_DATE; |
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62 | } else if(!sstrcasecmp(f, SC("owner"))) { |
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63 | finfo |= FINFO_OWNER; |
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64 | } else if(!sstrcasecmp(f, SC("mode"))) { |
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65 | finfo |= FINFO_MODE; |
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66 | } else if(!sstrcasecmp(f, SC("xattr"))) { |
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67 | finfo |= FINFO_XATTR; |
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68 | } else if(error && !err) { |
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69 | err = fs[i].ptr; |
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70 | continue; |
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71 | } |
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72 | free(f.ptr); |
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73 | } |
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74 | |
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75 | free(fs); |
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76 | return err ? 0 : finfo; |
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77 | } |
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78 | |
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79 | int resource_set_finfo(const char *path, DavResource *res, uint32_t finfo) { |
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80 | if(!path || finfo == 0) { |
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81 | return 0; |
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82 | } |
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83 | |
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84 | struct stat s; |
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85 | if(stat(path, &s)) { |
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86 | fprintf(stderr, "failed to stat: %s\n", path); |
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87 | return 1; |
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88 | } |
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89 | return resource_set_finfo_s(&s, res, finfo); |
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90 | } |
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91 | |
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92 | int resource_set_finfo_s(struct stat *s, DavResource *res, uint32_t finfo) { |
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93 | if(finfo == 0) { |
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94 | return 0; |
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95 | } |
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96 | |
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97 | DavXmlNode *content = NULL; |
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98 | DavXmlNode *last = NULL; |
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99 | |
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100 | if((finfo & FINFO_DATE) == FINFO_DATE) { |
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101 | char str[32]; |
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102 | struct tm *date = gmtime(&s->st_mtime); |
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103 | strftime(str, 32, "%a, %d %b %Y %H:%M:%S GMT", date); |
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104 | DavXmlNode *mtime = dav_xml_createnode_with_text(DAV_NS, "mtime", str); |
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105 | content = mtime; |
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106 | last = mtime; |
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107 | } |
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108 | #ifndef _WIN32 |
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109 | if((finfo & FINFO_OWNER) == FINFO_OWNER) { |
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110 | // TODO |
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111 | } |
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112 | if((finfo & FINFO_MODE) == FINFO_MODE) { |
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113 | mode_t mode = s->st_mode & 07777; |
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114 | char str[32]; |
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115 | snprintf(str, 32, "%o", (int)mode); |
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116 | DavXmlNode *xmode = dav_xml_createnode_with_text(DAV_NS, "mode", str); |
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117 | if(last) { |
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118 | last->next = xmode; |
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119 | } else { |
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120 | content = xmode; |
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121 | } |
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122 | last = xmode; |
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123 | } |
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124 | #endif |
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125 | |
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126 | |
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127 | dav_set_property(res, "idav:finfo", content);; |
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128 | |
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129 | return 0; |
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130 | } |
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131 | |
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132 | XAttributes* xml_get_attributes(DavXmlNode *xml) { |
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133 | UcxList *names = NULL; |
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134 | UcxList *values = NULL; |
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135 | |
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136 | size_t count = 0; |
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137 | |
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138 | char *hash = NULL; |
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139 | |
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140 | DavXmlNode *node = xml; |
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141 | while(node) { |
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142 | if(node->type == DAV_XML_ELEMENT) { |
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143 | if(!strcmp(node->name, "hash")) { |
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144 | hash = dav_xml_getstring(node->children); |
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145 | } else if(!strcmp(node->name, "xattr")) { |
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146 | char *xattr_name = dav_xml_get_attr(node, "name"); |
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147 | if(xattr_name) { |
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148 | names = ucx_list_append(names, strdup(xattr_name)); |
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149 | |
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150 | char *text = dav_xml_getstring(node->children); |
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151 | if(!text) { |
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152 | text = ""; |
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153 | } |
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154 | |
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155 | int len = 0; |
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156 | char *val = util_base64decode_len(text, &len); |
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157 | |
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158 | sstr_t *value = malloc(sizeof(sstr_t)); |
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159 | value->ptr = val; |
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160 | value->length = len; |
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161 | |
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162 | values = ucx_list_append(values, value); |
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163 | |
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164 | count++; |
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165 | } |
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166 | } |
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167 | } |
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168 | |
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169 | node = node->next; |
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170 | } |
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171 | |
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172 | XAttributes *attributes = NULL; |
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173 | if(count > 0) { |
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174 | attributes = calloc(1, sizeof(XAttributes)); |
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175 | attributes->hash = hash ? strdup(hash) : NULL; |
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176 | attributes->nattr = count; |
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177 | attributes->names = calloc(count, sizeof(char*)); |
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178 | attributes->values = calloc(count, sizeof(sstr_t)); |
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179 | int i=0; |
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180 | UCX_FOREACH(elm, names) { |
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181 | attributes->names[i] = elm->data; |
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182 | i++; |
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183 | } |
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184 | i=0; |
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185 | UCX_FOREACH(elm, values) { |
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186 | attributes->values[i] = *(sstr_t*)elm->data; |
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187 | i++; |
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188 | } |
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189 | } |
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190 | return attributes; |
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191 | } |
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192 | |
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193 | XAttributes* file_get_attributes(const char *path) { |
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194 | ssize_t nelm = 0; |
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195 | char **attributes = xattr_list(path, &nelm); |
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196 | if(nelm <= 0) { |
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197 | return NULL; |
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198 | } |
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199 | |
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200 | XAttributes *xattr = malloc(sizeof(XAttributes)); |
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201 | xattr->nattr = 0; |
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202 | xattr->names = calloc(nelm, sizeof(char*)); |
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203 | xattr->values = calloc(nelm, sizeof(sstr_t)); |
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204 | |
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205 | DAV_SHA_CTX *sha256 = dav_hash_init(); |
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206 | |
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207 | size_t nattr = 0; |
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208 | for(int i=0;i<nelm;i++) { |
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209 | ssize_t valuelen = 0; |
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210 | char *value = xattr_get(path, attributes[i], &valuelen); |
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211 | if(valuelen >= 0) { |
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212 | dav_hash_update(sha256, attributes[i], strlen(attributes[i])); |
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213 | dav_hash_update(sha256, value, valuelen); |
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214 | // add name and value |
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215 | xattr->names[nattr] = attributes[i]; |
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216 | sstr_t v; |
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217 | v.ptr = value; |
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218 | v.length = valuelen; |
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219 | xattr->values[nattr] = v; |
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220 | nattr++; |
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221 | } else { |
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222 | // discard not readable attributes |
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223 | free(attributes[i]); |
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224 | } |
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225 | } |
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226 | |
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227 | xattr->nattr = nattr; |
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228 | |
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229 | unsigned char hash[DAV_SHA256_DIGEST_LENGTH]; |
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230 | dav_hash_final(sha256, hash); |
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231 | xattr->hash = util_hexstr(hash, DAV_SHA256_DIGEST_LENGTH); |
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232 | |
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233 | free(attributes); |
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234 | |
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235 | if(nattr > 0) { |
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236 | return xattr; |
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237 | } else { |
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238 | xattributes_free(xattr); |
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239 | return NULL; |
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240 | } |
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241 | } |
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242 | |
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243 | int resource_set_xattr(DavResource *res, XAttributes *xattr) { |
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244 | if(!xattr || xattr->nattr == 0) { |
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245 | return 0; |
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246 | } |
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247 | |
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248 | DavXmlNode *content = dav_xml_createnode_with_text(DAV_NS, "hash", xattr->hash); |
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249 | DavXmlNode *last = content; |
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250 | |
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251 | for(int i=0;i<xattr->nattr;i++) { |
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252 | DavXmlNode *attr = dav_xml_createnode(DAV_NS, "xattr"); |
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253 | dav_xml_add_attr(attr, "name", xattr->names[i]); |
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254 | last->next = attr; |
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255 | last = attr; |
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256 | |
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257 | sstr_t value = xattr->values[i]; |
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258 | if(value.length > 0) { |
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259 | char *encval = util_base64encode(value.ptr, value.length); |
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260 | attr->children = dav_xml_createtextnode(encval); |
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261 | free(encval); |
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262 | } |
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263 | } |
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264 | |
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265 | dav_set_property(res, "idav:xattributes", content); |
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266 | |
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267 | return 0; |
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268 | } |
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269 | |
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270 | void xattributes_free(XAttributes *xattr) { |
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271 | free(xattr->hash); |
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272 | for(int i=0;i<xattr->nattr;i++) { |
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273 | free(xattr->names[i]); |
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274 | free(xattr->values[i].ptr); |
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275 | } |
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276 | free(xattr); |
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277 | } |
526
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278 | |
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279 | char* get_xattr_hash(DavXmlNode *finfo) { |
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280 | DavXmlNode *node = finfo; |
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281 | while(node) { |
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282 | if(node->type == DAV_XML_ELEMENT && !strcmp(node->name, "hash")) { |
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283 | return dav_xml_getstring(node->children); |
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284 | } |
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285 | node = node->next; |
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286 | } |
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287 | return NULL; |
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288 | } |
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289 | |
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290 | void finfo_get_values(DavXmlNode *xml, FileInfo *outval) { |
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291 | memset(outval, 0, sizeof(FileInfo)); |
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292 | DavXmlNode *node = xml; |
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293 | while(node) { |
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294 | if(node->type == DAV_XML_ELEMENT) { |
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295 | if(!strcmp(node->name, "mtime")) { |
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296 | char *mtime = dav_xml_getstring(node->children); |
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297 | if(mtime) { |
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298 | outval->last_modified = util_parse_lastmodified(mtime); |
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299 | outval->date_set = TRUE; |
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300 | } |
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301 | } else if(!strcmp(node->name, "mode")) { |
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302 | char *mode_str = dav_xml_getstring(node->children); |
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303 | if(mode_str) { |
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304 | char *end; |
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305 | errno = 0; |
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306 | long int mode = strtol(mode_str, &end, 8); |
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307 | if(errno == 0) { |
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308 | mode &= 07777; |
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309 | outval->mode = mode; |
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310 | outval->mode_set = TRUE; |
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311 | } |
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312 | } |
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313 | } |
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314 | } |
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315 | node = node->next; |
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316 | } |
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317 | |
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318 | } |