Localize the I2P router console.

config/chroot_local-includes/usr/local/lib/tails-shell-library/common.sh

@@ -20,3 +20,15 @@ wait_until() {
 try_for() {
     wait_until "${@}"
 }
+
+set_key() {
+    local key="${1}"
+    local value="${2}"
+    local file="${3}"
+    local op="${4:-=}"
+    if grep -q "^${key}${op}" "${file}"; then
+        sed -i -n "s/^${key}${op}.*$/${key}${op}${value}/p" "${file}"
+    else
+        echo "${key}${op}${value}" >> "${file}"
+    fi
+}

config/chroot_local-includes/usr/local/lib/tails-shell-library/i2p.sh

 #!/bin/sh
 
+# Import set_key().
+. /usr/local/lib/tails-shell-library/common.sh
+
+# Import language_code_from_locale().
+. /usr/local/lib/tails-shell-library/localization.sh
+
+I2P_DEFAULT_CONFIG="/usr/share/i2p"
 I2P_CONFIG="/var/lib/i2p/i2p-config"
 I2P_TUNNEL_CONFIG="${I2P_CONFIG}/i2ptunnel.config"
 
@@ -31,3 +38,20 @@ i2p_router_console_address() {
 i2p_router_console_is_ready() {
     netstat -4nlp | grep -qwF "$(i2p_router_console_address)"
 }
+
+set_best_i2p_router_console_lang() {
+    # We will use the detected language even if I2P supports it; it
+    # will default to English in that case.
+    local lang="$(language_code_from_locale "${LANG}")"
+    # We first try to set it in an existing "live" config, even though
+    # the effect will only appear after a restart.
+    local config
+    for config in "${I2P_CONFIG}/router.config" \
+                  "${I2P_DEFAULT_CONFIG}/router.config"; do
+        if [ -e "${config}" ]; then
+            set_key "routerconsole.lang" "${lang}" "${config}"
+            return 0
+        fi
+    done
+    return 1
+}

config/chroot_local-includes/usr/local/sbin/tails-i2p

@@ -16,7 +16,8 @@ set -u
 
 # Import wait_until()
 . /usr/local/lib/tails-shell-library/common.sh
-# Import i2p_has_bootstrapped() and i2p_router_console_is_ready()
+# Import i2p_has_bootstrapped(), i2p_router_console_is_ready() and
+# set_best_i2p_router_console_lang().
 . /usr/local/lib/tails-shell-library/i2p.sh
 
 I2P_STARTUP_TIMEOUT=60
@@ -62,7 +63,16 @@ notify_bootstrap_success() {
 
 case "${1}" in
     start|restart)
-        service i2p restart
+        # Stop I2P before setting the router console language in case
+        # it pushes any updated options on quit.
+        if service i2p status; then
+            service i2p stop
+        fi
+        # Get LANG, since we may run this from an environment that
+        # doesn't have it set.
+        . /etc/default/locale
+        set_best_i2p_router_console_lang
+        service i2p start
         wait_until_i2p_router_console_is_ready || startup_failure
         notify_router_console_success
         wait_until_i2p_has_bootstrapped || bootstrap_failure