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annotate admin/application/libraries/hgphp.php @ 19:51f6d4415b09

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completed Issue #8 security - block creation of 'admin' repository name and issue #2 concurrency - hgweb support
author joshjcarrier
date Sat, 15 May 2010 13:23:40 -0700
parents 9aceab434288
children 6f38dd98ff78
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1 <?php if (!defined('BASEPATH')) exit('No direct script access allowed');
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2
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3 /**
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4 * CodeIgniter Mercurial Repository Management class
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5 *
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6 * Scans file system and Mercurial projects directory, allowing
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2ec108f96fad Cleaned up config. UI tidy up. Commenting. Still missing caching and concurrency checks.
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7 * web-based manipulation of the hgweb.config and hgrc configuration files.
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8 *
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9 * Depends on the HgConf2Ini library.
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10 *
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11 * @package CodeIgniter
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12 * @subpackage Libraries
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13 * @category Libraries
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14 * @author Josh Carrier
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15 * @link blog.joshjcarrier.com
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16 *
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17 */
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18 class HgPHP
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19 {
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20 private $_ci;
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22 function __construct($config = array())
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23 {
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24 if(!empty($config))
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25 {
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26 $this->initialize($config);
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27 }
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29 $this->_ci =& get_instance();
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30 $this->_ci->lang->load('hgphp');
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31 $this->_ci->load->library('hgconf2ini');
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32 log_message('debug', 'HgPHP class Initialized');
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33 }
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35 function initialize($config = array())
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36 {
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37 foreach($config as $key=>$val)
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38 {
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39 $this->{'_'.$key} = $val;
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40 }
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41 }
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42
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43 /**
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44 * Public accessors - hgweb.config
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45 */
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46
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47 /**
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48 * Returns a list of available repositories.
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49 * Will show up if: detected in repo directory
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50 * Will have status "enabled" if: detected in hgweb.config
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51 *
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52 * @param ofl_lock_hgwebconf (updated by reference) the current optimistic file lock value
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53 * @return an array of 0 or more detected repositories
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54 */
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55 function lsdir(&$ofl_lock_hgwebconf)
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56 {
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57 $realdir = $this->__realdirscan();
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58 $hgwebdir_compat = $this->_ci->hgconf2ini->getHgWebDirCollections($ofl_lock_hgwebconf);
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60 $allrepo = array_merge($realdir, $hgwebdir_compat);
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62 $hgrepos = array();
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63 foreach($allrepo as $repo)
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64 {
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65 $hgrepos[$repo]['name'] = $repo;
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66
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67 if(isset($realdir[$repo]) && isset($hgwebdir_compat[$repo]))
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68 {
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69 $hgrepos[$repo]['status'] = HGPHP_REPO_STATUS_ENABLED;
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70 }
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71 else if(isset($realdir[$repo]) && !isset($hgwebdir_compat[$repo]))
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72 {
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73 $hgrepos[$repo]['status'] = HGPHP_REPO_STATUS_DISABLED;
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74 }
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75 else if(!isset($realdir[$repo]) && isset($hgwebdir_compat[$repo]))
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76 {
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77 $hgrepos[$repo]['status'] = HGPHP_REPO_STATUS_MISSING;
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78 }
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79 }
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81 return $hgrepos;
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82 }
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83
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84 /**
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85 * Create a Hg repository by:
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86 * - adding an entry in hgrc if not present
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87 * - creating a bare repository if not present
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88 * @param r_name name of the new repository to create, used as folder name
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89 * @param hg_lock_hgwebconf (updated by reference) the last known optimistic file lock value of hgwebconf
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90 * @param hg_lock_hgrc (updated by reference) value of hgrc's lock value
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91 * @return status code
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92 */
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93 function create_repository($r_name, &$ofl_lock_hgwebconf, &$hg_lock_hgrc)
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94 {
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95 if(!$this->can_create($r_name))
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96 {
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97 return HGPHP_ERR_PERM_USR;
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98 }
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99
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100 $create_status = HGPHP_OK;
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101 $ofl_dummylock_hgwebconf = '';
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102 $lsdir = $this->lsdir($ofl_dummylock_hgwebconf); // don't want to update the lock yet
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103
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104 // simplifies repo list into array where name is both key and value
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105 // this is how hgweb.config wants it
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106 $existingdir = array_keys($lsdir);
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107 $tempexistingdir = array();
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108 foreach($existingdir as $repo_name)
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109 {
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110 $tempexistingdir[$repo_name] = $repo_name;
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111 }
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112 $existingdir = $tempexistingdir;
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113
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114 // not registered in hgweb.config
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115 if(!isset($lsdir[$r_name]))
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116 {
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117 // edit the directory
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118 $existingdir[$r_name] = $r_name;
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119 $create_status = $this->_ci->hgconf2ini->setHgWebDirCollections($existingdir, $ofl_lock_hgwebconf);
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120 if($create_status == HGPHP_OK)
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121 {
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122 // then create the repository
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123 $create_status = $this->create_repository_dir($r_name, $hg_lock_hgrc);
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124 }
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125 }
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126 // TODO repair missing directory?
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127 else if($lsdir[$r_name]['status'] == HGPHP_REPO_STATUS_MISSING)
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128 {
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129 $create_status = -100;
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130 //$this->template->inject_partial('user_msg', 'Repository "'. $r_name .'" RESTORE.');
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131 }
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132 else
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133 {
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134 // repository already exists
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135 $create_status = HGPHP_ERR_FS_PREEXISTS;
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136 }
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137 return $create_status;
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138 }
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139
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140 /**
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141 * update_repository
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142 * Update repository's hgrc
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143 * @param r_name name of the repository to update hgrc for
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144 * @param hgrc_data array representing new hgrc file
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145 * @param ofl_lock_hgrc (updated by reference) the current optimistic file lock value
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146 * @return status code
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147 */
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148 function update_repository($r_name, $hgrc_data, &$ofl_lock_hgrc)
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149 {
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150 return $this->_ci->hgconf2ini->setHGRC($r_name, $hgrc_data, $ofl_lock_hgrc);
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151 }
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152
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153 /**
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154 * delete_repository
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155 * Deletes a repository from the file system and unregisters it from hgweb.config
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156 * @param r_name name of the repo to delete permanently
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157 * @param $ofl_lock_hgwebconf (updated by reference) the current optimistic file lock value
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158 * @return status code
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159 */
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160 function delete_repository($r_name, &$ofl_lock_hgwebconf)
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161 {
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162 if(!$this->can_delete($r_name))
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163 {
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164 return HGPHP_ERR_PERM_USR;
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165 }
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166
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167 $del_status = HGPHP_OK;
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168 $ofl_dummylock_hgwebconf = '';
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169 $lsdir = $this->lsdir($ofl_dummylock_hgwebconf); // don't want to update lock yet
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170
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171 // simplifies repo list into array where name is both key and value
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172 // this is how hgweb.config wants it
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173 $existingdir = array_keys($lsdir);
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174 $tempexistingdir = array();
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175 foreach($existingdir as $repo_name)
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176 {
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177 $tempexistingdir[$repo_name] = $repo_name;
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178 }
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179 $existingdir = $tempexistingdir;
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180
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181 if(isset($lsdir[$r_name]))
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182 {
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183 // edit the directory
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184 unset($existingdir[$r_name]);
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185 // remove hgweb.config
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186 $del_status = $this->_ci->hgconf2ini->setHgWebDirCollections($existingdir, $ofl_lock_hgwebconf);
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187
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188 // remove from hgweb.config
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189 if($del_status == HGPHP_OK)
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190 {
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191 // existing filesystem is not missing, thus needs to be deleted
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192 if($lsdir[$r_name]['status'] != HGPHP_REPO_STATUS_MISSING)
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193 {
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194 // FIXME ofl lock?
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195 $del_status = $this->_ci->hgconf2ini->unlinkHGRC($r_name, $ofl_lock);
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196
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197 if($del_status == HGPHP_OK)
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198 {
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199 $del_status = $this->delete_repository_dir($r_name);
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200 }
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201 }
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202 }
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203 }
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204 else
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205 {
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206 $del_status = HGPHP_ERR_FS_PREEXISTS;
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207 }
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208 return $del_status;
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209 }
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210
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211 /**
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212 * stat_repository
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213 * Returns the HGRC represented as an array for the specified repository
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214 * @param r_name name of the project whose hgrc to retrieve
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215 * @param ofl_lock_hgrc (updated by reference) the current optimistic file lock value will be updated
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216 * @return array representing hgrc or status code
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217 */
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218 function stat_repository($r_name, &$ofl_lock_hgrc)
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219 {
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220 // FIXME permission check
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221 return $this->_ci->hgconf2ini->getHGRC($r_name, $ofl_lock_hgrc);
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222 }
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223
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224
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225 /**
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226 * can_create
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227 * Checks if user has permissions to create this repository
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228 * @param r_name name of repository wanting to be created
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229 * @return true if allowed
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230 */
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231 function can_create($r_name)
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232 {
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233 return $this->_hgwebconf_allow_repo_create;
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234 }
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235
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236 /**
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237 * can_delete
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238 * Checks if user has permissions to delete this repository
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239 * @param r_name name of repository wanting to be deleted
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240 * @return true if allowed
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241 */
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242 function can_delete($r_name)
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243 {
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244 return $this->_hgwebconf_allow_repo_delete;
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245 }
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246
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247 /**
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248 * create_repository_dir
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249 * Creates a whole repository directory, with hgrc
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250 * @param r_name name of repository to create directory for
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251 * @param ofl_lock_hgrc (updated by reference) the current optimistic file lock value will be updated
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252 * @return status code
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253 */
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254 function create_repository_dir($r_name, &$ofl_lock_hgrc)
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255 {
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256 if(!$this->can_create($r_name))
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257 {
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258 return HGPHP_ERR_PERM_USR;
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259 }
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260
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261 // create repo directory structure recursively
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262 $create_status = mkdir($this->_repositories_abs_dir . $r_name . '/.hg/store/data/', 0755, TRUE);
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263
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264 if($create_status == TRUE)
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265 {
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266 // create hgrc
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267 $create_status = $this->_ci->hgconf2ini->touchHGRC($r_name, $ofl_lock);
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268 }
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269 else
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270 {
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271 // system couldn't make directory
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272 $create_status = HGPHP_ERR_PERM_SYS_REPODIR;
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273 }
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274 return $create_status;
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275 }
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276
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277 /**
18
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278 * delete_repository_dir
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279 * Deletes a whole repository directory including hgrc and data files
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280 * @param r_name name of repository to delete directory of
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281 * @return status code
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282 */
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283 function delete_repository_dir($repository_name)
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284 {
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285 if(!$this->can_delete($repository_name))
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286 {
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287 return HGPHP_ERR_PERM_USR;
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288 }
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289
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290 $cd = $this->_repositories_abs_dir . $repository_name;
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291 $this->recursiveDelete($cd . '/.hg/');
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292 $del_status = $this->recursiveDelete($cd);
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293 if($del_status == TRUE)
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294 {
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295 $del_status = HGPHP_OK;
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296 }
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297 else
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298 {
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299 $del_status = HGPHP_ERR_PERM_SYS_REPODIR;
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300 }
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301 return $del_status;
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302 }
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303
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304 /**
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305 * Performs a real directory scan where the projects are suppose to reside.
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306 *
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307 * @return the array containing 0 or more valid directories
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308 */
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309 function __realdirscan()
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310 {
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311 $this->_ci->load->helper('directory');
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312
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313 $realdir = directory_map($this->_repositories_abs_dir, TRUE);
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314
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315 $verifiedrealdir = array();
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316 foreach($realdir as $file)
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317 {
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318 // checks if we detected a folder
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319 if(is_dir($this->_repositories_abs_dir . $file))
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320 {
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321 $verifiedrealdir[$file] = $file;
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322 }
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323 }
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324
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325 return $verifiedrealdir;
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326 }
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327
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328 /**
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329 * Delete a file or recursively delete a directory
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330 *
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331 * @param string $str Path to file or directory
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332 * @return true on successful deletion
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333 */
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334 function recursiveDelete($str){
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335 if(is_file($str)){
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336 return @unlink($str);
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337 }
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338 elseif(is_dir($str)){
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339 $scan = glob(rtrim($str,'/').'/*');
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340 foreach($scan as $index=>$path){
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341 $this->recursiveDelete($path);
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342 }
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343 return @rmdir($str);
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344 }
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345 }
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346 }