Maarten Derks | 8d5a713 | 2016-06-07 15:51:53 +0200 | [diff] [blame] | 1 | package com.fairphone.updater.tools; |
| 2 | |
| 3 | import android.util.Xml; |
| 4 | |
| 5 | import com.fairphone.updater.data.Store; |
| 6 | import com.fairphone.updater.data.UpdaterData; |
| 7 | import com.fairphone.updater.data.Version; |
| 8 | |
| 9 | import org.xmlpull.v1.XmlPullParser; |
| 10 | import org.xmlpull.v1.XmlPullParserException; |
| 11 | |
| 12 | import java.io.FileInputStream; |
| 13 | import java.io.IOException; |
| 14 | import java.util.Locale; |
| 15 | |
| 16 | /** |
| 17 | * A helper class for parsing the XML received from the server into a data structure. |
| 18 | * |
| 19 | * @author Maarten Derks |
| 20 | */ |
| 21 | public class XmlParser { |
| 22 | |
| 23 | private static final String ns = null; |
| 24 | |
| 25 | /** |
| 26 | * Parse the content of the specified file input stream into an UpdaterData object. |
| 27 | * |
| 28 | * @param fis A FileInputStream containing the XML to be parsed |
| 29 | * @return an UpdaterData object |
| 30 | * @throws XmlPullParserException This exception is thrown to signal XML Pull Parser related faults. |
| 31 | * @throws IOException Signals a general, I/O-related error. |
| 32 | */ |
| 33 | public UpdaterData parse(FileInputStream fis) throws XmlPullParserException, IOException { |
| 34 | try { |
| 35 | XmlPullParser parser = Xml.newPullParser(); |
| 36 | parser.setFeature(XmlPullParser.FEATURE_PROCESS_NAMESPACES, false); |
| 37 | parser.setInput(fis, null); |
| 38 | parser.nextTag(); |
| 39 | return readUpdaterXml(parser); |
| 40 | } finally { |
| 41 | fis.close(); |
| 42 | } |
| 43 | } |
| 44 | |
| 45 | private UpdaterData readUpdaterXml(XmlPullParser parser) throws XmlPullParserException, IOException { |
| 46 | UpdaterData updaterData = UpdaterData.getInstance(); |
| 47 | updaterData.resetUpdaterData(); |
| 48 | |
| 49 | parser.require(XmlPullParser.START_TAG, ns, "updater"); |
| 50 | while (parser.next() != XmlPullParser.END_TAG) { |
| 51 | if (parser.getEventType() != XmlPullParser.START_TAG) { |
| 52 | continue; |
| 53 | } |
| 54 | String tagName = parser.getName(); |
| 55 | if (tagName.equals("releases")) { |
| 56 | parser.require(XmlPullParser.START_TAG, ns, "releases"); |
| 57 | while (parser.next() != XmlPullParser.END_TAG) { |
| 58 | if (parser.getEventType() != XmlPullParser.START_TAG) { |
| 59 | continue; |
| 60 | } |
| 61 | String releaseType = parser.getName(); |
| 62 | if (releaseType.equals("fairphone")) { |
| 63 | parser.require(XmlPullParser.START_TAG, ns, "fairphone"); |
| 64 | updaterData.setLatestFairphoneVersionNumber(parser.getAttributeValue(ns, "latest")); |
| 65 | while (parser.next() != XmlPullParser.END_TAG) { |
| 66 | if (parser.getEventType() != XmlPullParser.START_TAG) { |
| 67 | continue; |
| 68 | } |
| 69 | String name = parser.getName(); |
| 70 | if (name.equals("version")) { |
| 71 | updaterData.addFairphoneVersion(readVersion(parser, Version.IMAGE_TYPE_FAIRPHONE)); |
| 72 | } else { |
| 73 | skip(parser); |
| 74 | } |
| 75 | } |
| 76 | } |
| 77 | |
| 78 | if (releaseType.equals("aosp")) { |
| 79 | parser.require(XmlPullParser.START_TAG, ns, "aosp"); |
| 80 | updaterData.setLatestAOSPVersionNumber(parser.getAttributeValue(ns, "latest")); |
| 81 | while (parser.next() != XmlPullParser.END_TAG) { |
| 82 | if (parser.getEventType() != XmlPullParser.START_TAG) { |
| 83 | continue; |
| 84 | } |
| 85 | String name = parser.getName(); |
| 86 | if (name.equals("version")) { |
| 87 | updaterData.addAOSPVersion(readVersion(parser, Version.IMAGE_TYPE_AOSP)); |
| 88 | } else { |
| 89 | skip(parser); |
| 90 | } |
| 91 | } |
| 92 | } |
| 93 | } |
| 94 | } |
| 95 | |
| 96 | if (tagName.equals("stores")) { |
| 97 | parser.require(XmlPullParser.START_TAG, ns, "stores"); |
| 98 | while (parser.next() != XmlPullParser.END_TAG) { |
| 99 | if (parser.getEventType() != XmlPullParser.START_TAG) { |
| 100 | continue; |
| 101 | } |
| 102 | String name = parser.getName(); |
| 103 | if (name.equals("store")) { |
| 104 | updaterData.addAppStore(readStore(parser)); |
| 105 | } else { |
| 106 | skip(parser); |
| 107 | } |
| 108 | } |
| 109 | } |
| 110 | } |
| 111 | return updaterData; |
| 112 | } |
| 113 | |
| 114 | private Version readVersion(XmlPullParser parser, String imageType) throws XmlPullParserException, IOException { |
| 115 | parser.require(XmlPullParser.START_TAG, ns, "version"); |
| 116 | |
| 117 | Version version = new Version(); |
| 118 | |
| 119 | version.setId(parser.getAttributeValue(ns, "number")); |
| 120 | version.setImageType(imageType); |
| 121 | |
| 122 | while (parser.next() != XmlPullParser.END_TAG) { |
| 123 | if (parser.getEventType() != XmlPullParser.START_TAG) { |
| 124 | continue; |
| 125 | } |
| 126 | String tagName = parser.getName(); |
| 127 | if (tagName.equals("name")) { |
| 128 | version.setName(readName(parser)); |
| 129 | } else if (tagName.equals("build_number")) { |
| 130 | version.setBuildNumber(readBuildNumber(parser)); |
| 131 | } else if (tagName.equals("android_version")) { |
| 132 | version.setAndroidVersion(readAndroidVersion(parser)); |
| 133 | } else if (tagName.equals("release_notes")) { |
| 134 | version.setReleaseNotes(Version.DEFAULT_NOTES_LANG, readReleaseNotes(parser)); |
| 135 | } else if (tagName.equals("release_notes" + "_" + Locale.getDefault().getLanguage())) { |
| 136 | version.setReleaseNotes(Locale.getDefault().getLanguage(), readLocalizedReleaseNotes(parser)); |
| 137 | } else if (tagName.equals("release_date")) { |
| 138 | version.setReleaseDate(readReleaseDate(parser)); |
| 139 | } else if (tagName.equals("md5sum")) { |
| 140 | version.setMd5Sum(readMd5sum(parser)); |
| 141 | } else if(tagName.equals("thumbnail_link")) { |
| 142 | version.setThumbnailLink(readThumbnailLink(parser)); |
| 143 | } else if (tagName.equals("update_link")) { |
| 144 | version.setDownloadLink(readUpdateLink(parser)); |
| 145 | } else if (tagName.equals("dependencies")) { |
| 146 | version.setVersionDependencies(readDependencies(parser)); |
| 147 | } else if (tagName.equals("erase_data_warning")) { |
| 148 | version.setEraseAllPartitionWarning(); |
| 149 | } else { |
| 150 | skip(parser); |
| 151 | } |
| 152 | } |
| 153 | return version; |
| 154 | } |
| 155 | |
| 156 | private Store readStore(XmlPullParser parser) throws XmlPullParserException, IOException { |
| 157 | parser.require(XmlPullParser.START_TAG, ns, "store"); |
| 158 | |
| 159 | Store store = new Store(); |
| 160 | |
| 161 | store.setId(parser.getAttributeValue(ns, "number")); |
| 162 | |
| 163 | while (parser.next() != XmlPullParser.END_TAG) { |
| 164 | if (parser.getEventType() != XmlPullParser.START_TAG) { |
| 165 | continue; |
| 166 | } |
| 167 | String tagName = parser.getName(); |
| 168 | if (tagName.equals("name")) { |
| 169 | store.setName(readName(parser)); |
| 170 | } else if (tagName.equals("build_number")) { |
| 171 | store.setBuildNumber(readBuildNumber(parser)); |
| 172 | } else if (tagName.equals("release_notes")) { |
| 173 | store.setReleaseNotes(Version.DEFAULT_NOTES_LANG, readReleaseNotes(parser)); |
| 174 | } else if (tagName.equals("release_notes" + "_" + Locale.getDefault().getLanguage())) { |
| 175 | store.setReleaseNotes(Locale.getDefault().getLanguage(), readLocalizedReleaseNotes(parser)); |
| 176 | } else if (tagName.equals("release_date")) { |
| 177 | store.setReleaseDate(readReleaseDate(parser)); |
| 178 | } else if (tagName.equals("md5sum")) { |
| 179 | store.setMd5Sum(readMd5sum(parser)); |
| 180 | } else if (tagName.equals("update_link")) { |
| 181 | store.setDownloadLink(readUpdateLink(parser)); |
| 182 | } else if (tagName.equals("show_disclaimer")) { |
| 183 | store.setShowDisclaimer(); |
| 184 | } else { |
| 185 | skip(parser); |
| 186 | } |
| 187 | } |
| 188 | return store; |
| 189 | } |
| 190 | |
| 191 | private String readName(XmlPullParser parser) throws IOException, XmlPullParserException { |
| 192 | parser.require(XmlPullParser.START_TAG, ns, "name"); |
| 193 | String name = readText(parser); |
| 194 | parser.require(XmlPullParser.END_TAG, ns, "name"); |
| 195 | return name; |
| 196 | } |
| 197 | |
| 198 | private String readBuildNumber(XmlPullParser parser) throws IOException, XmlPullParserException { |
| 199 | parser.require(XmlPullParser.START_TAG, ns, "build_number"); |
| 200 | String buildNumber = readText(parser); |
| 201 | parser.require(XmlPullParser.END_TAG, ns, "build_number"); |
| 202 | return buildNumber; |
| 203 | } |
| 204 | |
| 205 | private String readAndroidVersion(XmlPullParser parser) throws IOException, XmlPullParserException { |
| 206 | parser.require(XmlPullParser.START_TAG, ns, "android_version"); |
| 207 | String androidVersion = readText(parser); |
| 208 | parser.require(XmlPullParser.END_TAG, ns, "android_version"); |
| 209 | return androidVersion; |
| 210 | } |
| 211 | |
| 212 | private String readReleaseNotes(XmlPullParser parser) throws IOException, XmlPullParserException { |
| 213 | parser.require(XmlPullParser.START_TAG, ns, "release_notes"); |
| 214 | String releaseNotes = readText(parser); |
| 215 | parser.require(XmlPullParser.END_TAG, ns, "release_notes"); |
| 216 | return releaseNotes; |
| 217 | } |
| 218 | |
| 219 | private String readLocalizedReleaseNotes(XmlPullParser parser) throws IOException, XmlPullParserException { |
| 220 | parser.require(XmlPullParser.START_TAG, ns, "release_notes" + "_" + Locale.getDefault().getLanguage()); |
| 221 | String releaseNotes = readText(parser); |
| 222 | parser.require(XmlPullParser.END_TAG, ns, "release_notes" + "_" + Locale.getDefault().getLanguage()); |
| 223 | return releaseNotes; |
| 224 | } |
| 225 | |
| 226 | private String readReleaseDate(XmlPullParser parser) throws IOException, XmlPullParserException { |
| 227 | parser.require(XmlPullParser.START_TAG, ns, "release_date"); |
| 228 | String releaseDate = readText(parser); |
| 229 | parser.require(XmlPullParser.END_TAG, ns, "release_date"); |
| 230 | return releaseDate; |
| 231 | } |
| 232 | |
| 233 | private String readMd5sum(XmlPullParser parser) throws IOException, XmlPullParserException { |
| 234 | parser.require(XmlPullParser.START_TAG, ns, "md5sum"); |
| 235 | String md5sum = readText(parser); |
| 236 | parser.require(XmlPullParser.END_TAG, ns, "md5sum"); |
| 237 | return md5sum; |
| 238 | } |
| 239 | |
| 240 | private String readThumbnailLink(XmlPullParser parser) throws IOException, XmlPullParserException { |
| 241 | parser.require(XmlPullParser.START_TAG, ns, "thumbnail_link"); |
| 242 | String thumbnailLink = readText(parser); |
| 243 | parser.require(XmlPullParser.END_TAG, ns, "thumbnail_link"); |
| 244 | return thumbnailLink; |
| 245 | } |
| 246 | |
| 247 | private String readUpdateLink(XmlPullParser parser) throws IOException, XmlPullParserException { |
| 248 | parser.require(XmlPullParser.START_TAG, ns, "update_link"); |
| 249 | String updateLink = readText(parser); |
| 250 | parser.require(XmlPullParser.END_TAG, ns, "update_link"); |
| 251 | return updateLink; |
| 252 | } |
| 253 | |
| 254 | private String readDependencies(XmlPullParser parser) throws IOException, XmlPullParserException { |
| 255 | parser.require(XmlPullParser.START_TAG, ns, "dependencies"); |
| 256 | String dependencies = readText(parser); |
| 257 | parser.require(XmlPullParser.END_TAG, ns, "dependencies"); |
| 258 | return dependencies; |
| 259 | } |
| 260 | |
| 261 | private String readText(XmlPullParser parser) throws IOException, XmlPullParserException { |
| 262 | String result = ""; |
| 263 | if (parser.next() == XmlPullParser.TEXT) { |
| 264 | result = parser.getText(); |
| 265 | parser.nextTag(); |
| 266 | } |
| 267 | return result; |
| 268 | } |
| 269 | |
| 270 | private void skip(XmlPullParser parser) throws XmlPullParserException, IOException { |
| 271 | if (parser.getEventType() != XmlPullParser.START_TAG) { |
| 272 | throw new IllegalStateException(); |
| 273 | } |
| 274 | int depth = 1; |
| 275 | while (depth != 0) { |
| 276 | switch (parser.next()) { |
| 277 | case XmlPullParser.END_TAG: |
| 278 | depth--; |
| 279 | break; |
| 280 | case XmlPullParser.START_TAG: |
| 281 | depth++; |
| 282 | break; |
| 283 | } |
| 284 | } |
| 285 | } |
| 286 | } |