[PATCH v8 14/16] sbuild: Fixed proxy support

[Uladzimir Bely <ubely@ilbers.de>]

This makes sbuild able to work via proxy.

Proxy settings passed via 'sbuild_export' seem to work only for build
stage in sbuild. Previous stages (like schroot setup, downloading deps)
don't use this values.

To work via proxy in this stages there should be environment filter
for sbuild set via sbuild.conf.

Signed-off-by: Uladzimir Bely <ubely@ilbers.de>
---
 meta/classes/dpkg-base.bbclass |  1 +
 meta/classes/dpkg.bbclass      | 14 ++++++++++++++
 meta/classes/sbuild.bbclass    | 31 ++++++++++++++++++++++++-------
 3 files changed, 39 insertions(+), 7 deletions(-)

diff --git a/meta/classes/dpkg-base.bbclass b/meta/classes/dpkg-base.bbclass
index 01676f5e..e879bf9c 100644
--- a/meta/classes/dpkg-base.bbclass
+++ b/meta/classes/dpkg-base.bbclass
@@ -105,6 +105,7 @@ python() {
 }
 
 do_apt_fetch() {
+    E="${@ isar_export_proxies(d)}"
     schroot_create_configs
     for uri in "${SRC_APT}"; do
         schroot -d / -c ${SBUILD_CHROOT} -- \
diff --git a/meta/classes/dpkg.bbclass b/meta/classes/dpkg.bbclass
index da3b3ede..126a4ee4 100644
--- a/meta/classes/dpkg.bbclass
+++ b/meta/classes/dpkg.bbclass
@@ -35,6 +35,15 @@ dpkg_runbuild() {
         [ "${var}" = "PATH_PREPEND" ] && continue
         [ "${var}" = "DEB_BUILD_OPTIONS" ] && continue
 
+        [ "${var}" = "http_proxy" ] && continue
+        [ "${var}" = "HTTP_PROXY" ] && continue
+        [ "${var}" = "https_proxy" ] && continue
+        [ "${var}" = "HTTPS_PROXY" ] && continue
+        [ "${var}" = "ftp_proxy" ] && continue
+        [ "${var}" = "FTP_PROXY" ] && continue
+        [ "${var}" = "no_proxy" ] && continue
+        [ "${var}" = "NO_PROXY" ] && continue
+
         bbwarn "Export of '${line}' detected, please migrate to templates"
     done
 
@@ -59,6 +68,11 @@ dpkg_runbuild() {
 
     export SBUILD_CONFIG="${SBUILD_CONFIG}"
 
+    for envvar in http_proxy HTTP_PROXY https_proxy HTTPS_PROXY \
+        ftp_proxy FTP_PROXY no_proxy NO_PROXY; do
+        sbuild_add_env_filter "$envvar"
+    done
+
     echo '$apt_keep_downloaded_packages = 1;' >> ${SBUILD_CONFIG}
 
     # Create a .dsc file from source directory to use it with sbuild
diff --git a/meta/classes/sbuild.bbclass b/meta/classes/sbuild.bbclass
index f7c93bbe..7a732da5 100644
--- a/meta/classes/sbuild.bbclass
+++ b/meta/classes/sbuild.bbclass
@@ -99,16 +99,33 @@ schroot_delete_configs() {
 EOSUDO
 }
 
+sbuild_add_env_filter() {
+    [ -w ${SBUILD_CONFIG} ] || touch ${SBUILD_CONFIG}
+
+    if ! grep -q "^\$environment_filter =" ${SBUILD_CONFIG}; then
+        echo "\$environment_filter = [" >> ${SBUILD_CONFIG}
+        echo "];" >> ${SBUILD_CONFIG}
+    fi
+
+    FILTER=${1}
+
+    sed -i -e "/'\^${FILTER}\\$/d" \
+        -e "/^\$environment_filter =.*/a '^${FILTER}\$'," ${SBUILD_CONFIG}
+}
+
 sbuild_export() {
-    VAR=${1}; shift
-    VAR_LINE="'${VAR}' => '${@}',"
-    if [ -s "${SBUILD_CONFIG}" ]; then
-        sed -i -e "\$i\\" -e "${VAR_LINE}" ${SBUILD_CONFIG}
-    else
-        echo "\$build_environment = {" > ${SBUILD_CONFIG}
-        echo "${VAR_LINE}" >> ${SBUILD_CONFIG}
+    [ -w ${SBUILD_CONFIG} ] || touch ${SBUILD_CONFIG}
+
+    if ! grep -q "^\$build_environment =" ${SBUILD_CONFIG}; then
+        echo "\$build_environment = {" >> ${SBUILD_CONFIG}
         echo "};" >> ${SBUILD_CONFIG}
     fi
+
+    VAR=${1}; shift
+    VAR_LINE="'${VAR}' => '${@}',"
+
+    sed -i -e "/^'${VAR}' =>/d" ${SBUILD_CONFIG} \
+        -e "/^\$build_environment =.*/a ${VAR_LINE}" ${SBUILD_CONFIG}
 }
 
 schroot_install() {
-- 
2.20.1