comparison: src/main/kotlin/de/uapcore/lightpit/AbstractServlet.kt
src/main/kotlin/de/uapcore/lightpit/AbstractServlet.kt
- changeset 335
- 1eed60b779da
- parent 298
- 1275eb652008
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| 334:2696337baa3d | 335:1eed60b779da |
|---|---|
| 31 import jakarta.servlet.http.Cookie | 31 import jakarta.servlet.http.Cookie |
| 32 import jakarta.servlet.http.HttpServlet | 32 import jakarta.servlet.http.HttpServlet |
| 33 import jakarta.servlet.http.HttpServletRequest | 33 import jakarta.servlet.http.HttpServletRequest |
| 34 import jakarta.servlet.http.HttpServletResponse | 34 import jakarta.servlet.http.HttpServletResponse |
| 35 import java.sql.SQLException | 35 import java.sql.SQLException |
| 36 import java.time.ZoneId | |
| 36 import java.util.* | 37 import java.util.* |
| 37 | 38 |
| 38 abstract class AbstractServlet : HttpServlet() { | 39 abstract class AbstractServlet : HttpServlet() { |
| 39 | 40 |
| 40 companion object { | 41 companion object { |
| 42 const val COOKIE_MAX_AGE = 2592000 // 30 days | |
| 41 const val LANGUAGE_COOKIE_NAME = "lpit_language" | 43 const val LANGUAGE_COOKIE_NAME = "lpit_language" |
| 44 const val TIMEZONE_COOKIE_NAME = "lpit_timezone" | |
| 42 } | 45 } |
| 43 | 46 |
| 44 protected val logger = MyLogger() | 47 protected val logger = MyLogger() |
| 45 | 48 |
| 46 /** | 49 /** |
| 134 ) | 137 ) |
| 135 } else { | 138 } else { |
| 136 val sessionLocale = session.getAttribute(Constants.SESSION_ATTR_LANGUAGE) as Locale | 139 val sessionLocale = session.getAttribute(Constants.SESSION_ATTR_LANGUAGE) as Locale |
| 137 resp.locale = sessionLocale | 140 resp.locale = sessionLocale |
| 138 logger.trace("Continuing session {0} with language {1}", session.id, sessionLocale) | 141 logger.trace("Continuing session {0} with language {1}", session.id, sessionLocale) |
| 142 } | |
| 143 | |
| 144 // determine the timezone | |
| 145 if (session.getAttribute(Constants.SESSION_ATTR_TIMEZONE) == null) { | |
| 146 // timezone selection stored in cookie | |
| 147 val cookieTimezone = cookieTimezone(http) | |
| 148 | |
| 149 // if no cookie, fall back to server's timezone (the browser does not transmit one) | |
| 150 val timezone = cookieTimezone ?: ZoneId.systemDefault() | |
| 151 | |
| 152 selectTimezone(http, timezone) | |
| 153 logger.debug("Timezone for session {0} set to {1}", session.id, timezone) | |
| 139 } | 154 } |
| 140 | 155 |
| 141 // if this is an error path, bypass the normal flow | 156 // if this is an error path, bypass the normal flow |
| 142 if (fullPath.startsWith("/error/")) { | 157 if (fullPath.startsWith("/error/")) { |
| 143 http.styleSheets = listOf("error") | 158 http.styleSheets = listOf("error") |
| 196 | 211 |
| 197 private fun cookieLanguage(http: HttpRequest): Locale? = | 212 private fun cookieLanguage(http: HttpRequest): Locale? = |
| 198 http.request.cookies?.firstOrNull { c -> c.name == LANGUAGE_COOKIE_NAME } | 213 http.request.cookies?.firstOrNull { c -> c.name == LANGUAGE_COOKIE_NAME } |
| 199 ?.runCatching {Locale.forLanguageTag(this.value)}?.getOrNull() | 214 ?.runCatching {Locale.forLanguageTag(this.value)}?.getOrNull() |
| 200 | 215 |
| 216 protected fun sessionLanguage(http: HttpRequest) = http.session.getAttribute(Constants.SESSION_ATTR_LANGUAGE) as Locale | |
| 217 | |
| 218 private fun cookieTimezone(http: HttpRequest): ZoneId? = | |
| 219 http.request.cookies?.firstOrNull { c -> c.name == TIMEZONE_COOKIE_NAME } | |
| 220 ?.runCatching { ZoneId.of(this.value)}?.getOrNull() | |
| 221 | |
| 222 protected fun sessionTimezone(http: HttpRequest) = http.session.getAttribute(Constants.SESSION_ATTR_TIMEZONE) as String | |
| 223 | |
| 224 protected fun selectTimezone(http: HttpRequest, zoneId: ZoneId) { | |
| 225 http.session.setAttribute(Constants.SESSION_ATTR_TIMEZONE, zoneId.id) | |
| 226 val cookie = Cookie(TIMEZONE_COOKIE_NAME, zoneId.id) | |
| 227 cookie.isHttpOnly = true | |
| 228 cookie.path = http.request.contextPath | |
| 229 cookie.maxAge = COOKIE_MAX_AGE | |
| 230 http.response.addCookie(cookie) | |
| 231 } | |
| 232 | |
| 201 protected fun selectLanguage(http: HttpRequest, locale: Locale) { | 233 protected fun selectLanguage(http: HttpRequest, locale: Locale) { |
| 202 http.response.locale = locale | 234 http.response.locale = locale |
| 203 http.session.setAttribute(Constants.SESSION_ATTR_LANGUAGE, locale) | 235 http.session.setAttribute(Constants.SESSION_ATTR_LANGUAGE, locale) |
| 204 // delete cookie if language selection matches request locale, otherwise set cookie | 236 // delete cookie if language selection matches request locale, otherwise set cookie |
| 205 val cookie = Cookie(LANGUAGE_COOKIE_NAME, "") | 237 val cookie = Cookie(LANGUAGE_COOKIE_NAME, "") |
| 207 cookie.path = http.request.contextPath | 239 cookie.path = http.request.contextPath |
| 208 if (http.request.locale.language == locale.language) { | 240 if (http.request.locale.language == locale.language) { |
| 209 cookie.maxAge = 0 | 241 cookie.maxAge = 0 |
| 210 } else { | 242 } else { |
| 211 cookie.value = locale.language | 243 cookie.value = locale.language |
| 212 cookie.maxAge = 2592000 // 30 days | 244 cookie.maxAge = COOKIE_MAX_AGE |
| 213 } | 245 } |
| 214 http.response.addCookie(cookie) | 246 http.response.addCookie(cookie) |
| 215 } | 247 } |
| 216 } | 248 } |
