libidav/xml.c

Thu, 14 Dec 2017 13:35:03 +0100

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Thu, 14 Dec 2017 13:35:03 +0100
changeset 346
3e20fd78e555
parent 338
c7f3fe4abdb2
child 361
b6f2462ee055
permissions
-rw-r--r--

fixes missing string terminator when printing simplified xml (dav get-property)

331
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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 2017 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
9ca1e4706acc adds initial support for xml properties in libidav
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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
9ca1e4706acc adds initial support for xml properties in libidav
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10 * notice, this list of conditions and the following disclaimer.
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11 *
9ca1e4706acc adds initial support for xml properties in libidav
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12 * 2. Redistributions in binary form must reproduce the above copyright
9ca1e4706acc adds initial support for xml properties in libidav
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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
9ca1e4706acc adds initial support for xml properties in libidav
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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
9ca1e4706acc adds initial support for xml properties in libidav
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23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
9ca1e4706acc adds initial support for xml properties in libidav
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24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
9ca1e4706acc adds initial support for xml properties in libidav
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25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
9ca1e4706acc adds initial support for xml properties in libidav
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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 <stdio.h>
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30 #include <stdlib.h>
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31 #include <string.h>
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32
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33 #include "xml.h"
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34
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35 static DavXmlNodeType convert_type(xmlElementType type) {
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36 DavXmlNodeType ct;
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37 switch(type) {
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38 default: ct = DAV_XML_NONE; break;
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39 case XML_ELEMENT_NODE: ct = DAV_XML_ELEMENT; break;
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40 case XML_TEXT_NODE: ct = DAV_XML_TEXT;
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41 }
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42 return ct;
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43 }
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44
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45 typedef struct {
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46 xmlNode *node;
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47 DavXmlNode *parent;
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48 } ConvXmlElm;
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49
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50 DavXmlNode* dav_convert_xml(DavSession *sn, xmlNode *node) {
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51 if(!node) {
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52 return NULL;
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53 }
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54 DavXmlNodeType newnt = convert_type(node->type);
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55 if(newnt == DAV_XML_NONE) {
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56 return NULL;
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57 }
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58
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59 UcxMempool *mp = sn->mp;
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60
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61 ConvXmlElm *ce = malloc(sizeof(ConvXmlElm));
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62 ce->node = node;
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63 ce->parent = NULL;
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64 UcxList *stack = ucx_list_prepend(NULL, ce);
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65
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66 DavXmlNode *ret = NULL;
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67
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68 while(stack) {
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69 ConvXmlElm *c = stack->data;
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70 stack = ucx_list_remove(stack, stack);
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71
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72 xmlNode *n = c->node;
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73 DavXmlNode *prev = NULL;
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74 while(n) {
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75 DavXmlNode *newxn = ucx_mempool_calloc(mp, 1, sizeof(DavXmlNode));
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76 if(!ret) {
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77 ret = newxn;
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78 }
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79 newxn->type = convert_type(n->type);
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80 newxn->parent = c->parent;
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81 if(c->parent && !c->parent->children) {
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82 c->parent->children = newxn;
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83 }
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84 newxn->prev = prev;
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85 if(prev) {
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86 prev->next = newxn;
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87 }
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88
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89 if(newxn->type == DAV_XML_ELEMENT) {
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90 newxn->name = dav_session_strdup(sn, (char*)n->name);
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91 if(n->ns && n->ns->href) {
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92 newxn->namespace = dav_session_strdup(sn, (char*)n->ns->href);
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93 }
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94
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95 // TODO: copy attributes
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96
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97 if(n->children) {
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98 ConvXmlElm *convc = malloc(sizeof(ConvXmlElm));
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99 convc->node = n->children;
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100 convc->parent = newxn;
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101 stack = ucx_list_prepend(stack, convc);
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102 }
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103 } else if(newxn->type == DAV_XML_TEXT) {
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104 sstr_t content = sstrdup_a(mp->allocator, sstr((char*)n->content));
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105 newxn->content = content.ptr;
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106 newxn->contentlength = content.length;
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107 }
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108
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109 prev = newxn;
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110 n = n->next;
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111 }
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112
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113 free(c);
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114 }
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115
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116 return ret;
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117 }
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118
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119 void dav_print_xml(DavXmlNode *node) {
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120 if(node->type == DAV_XML_ELEMENT) {
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121 printf("<%s>", node->name);
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122
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123 DavXmlNode *child = node->children;
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124 if(child) {
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125 dav_print_xml(child);
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126 }
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127
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128 printf("</%s>", node->name);
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129 } else {
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130 fwrite(node->content, 1, node->contentlength, stdout);
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131 fflush(stdout);
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132 }
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133 if(node->next) {
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134 dav_print_xml(node->next);
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135 }
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136 }
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137
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138 /* ------------------------- public API ------------------------- */
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139
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140 char* dav_xml_getstring(DavXmlNode *node) {
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141 if(node && node->type == DAV_XML_TEXT) {
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142 return node->content;
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143 } else {
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144 return NULL;
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145 }
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146 }
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338
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148 DavBool dav_xml_isstring(DavXmlNode *node) {
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149 if(node && node->type == DAV_XML_TEXT && !node->next) {
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150 return TRUE;
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151 } else {
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152 return FALSE;
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153 }
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154 }
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155
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156 DavXmlNode* dav_text_node(DavSession *sn, char *text) {
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157 UcxMempool *mp = sn->mp;
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158 DavXmlNode *newxn = ucx_mempool_calloc(mp, 1, sizeof(DavXmlNode));
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159 newxn->type = DAV_XML_TEXT;
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160 sstr_t content = sstrdup_a(mp->allocator, sstr(text));
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161 newxn->content = content.ptr;
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162 newxn->contentlength = content.length;
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163 return newxn;
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164 }
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165

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