create torrent and magnet files

4 files changed, 89 insertions, 5 deletions

diff --git a/.gitignore b/.gitignore
index 59bd84b..0a6961c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,3 +8,6 @@ isorepo*
 
 # helpers
 continue.sh
+
+# local config
+parabolaiso/TORRENT_METADATA
diff --git a/parabolaiso/TORRENT_METADATA.sample b/parabolaiso/TORRENT_METADATA.sample
new file mode 100644
index 0000000..ad4427a
--- /dev/null
+++ b/parabolaiso/TORRENT_METADATA.sample
@@ -0,0 +1,27 @@
+
+# TORRENT_ANNOUNCE_URL (string)
+#                      will be embedded into the .torrent file
+#                      if this is not defined, then no .torrent file will be created
+readonly TORRENT_ANNOUNCE_URL="http://torrent.resonatingmedia.com:6969/announce"
+
+# TORRENT_WEBSEED_URLS (newline-separated list of strings)
+#                      will be embedded into the .torrent file
+readonly TORRENT_WEBSEED_URLS="
+http://mirror.grapentin.org/parabola/iso/
+http://jeweet.net/repo/parabola/iso/
+http://mirror.yandex.ru/mirrors/parabola/iso/
+http://mirror.fsf.org/parabola/iso/
+http://parabola.serverpit.com/iso/
+http://mirror.freedif.org/Parabola/iso/
+http://ftp.acc.umu.se/mirror/parabola.nu/iso/
+"
+
+# TORRENT_COMMENT (string)
+#                 will be embedded into the .torrent file
+#                 if ISOS_URL is defined below, a URL will be appended to this, pointing
+#                 to where the GPG signature of the ISO will be expected to be hosted
+readonly TORRENT_COMMENT="Parabola GNU/Linux-libre Official Release - GPG signature: "
+
+# ISOS_URL (string)
+#          is used to make a URL to where the ISO and GPG signature will be hosted
+readonly ISOS_URL=https://repo.parabola.nu/iso
diff --git a/parabolaiso/mkmetadata b/parabolaiso/mkmetadata
new file mode 100755
index 0000000..c00b98c
--- /dev/null
+++ b/parabolaiso/mkmetadata
@@ -0,0 +1,56 @@
+#!/bin/bash
+
+readonly OUT_DIR=$1
+readonly IMG_NAME=$2
+readonly PKGLIST=$(readlink -f $3)
+
+# if an optional .torrent file is desired, see ./TORRENT_METADATA.sample
+[[ -f ./TORRENT_METADATA ]] && source ./TORRENT_METADATA
+
+which mktorrent &> /dev/null && readonly HAS_MKTORRENT=1 || readonly HAS_MKTORRENT=0
+which rhash     &> /dev/null && readonly HAS_RHASH=1     || readonly HAS_RHASH=0
+[[ -n "${TORRENT_ANNOUNCE_URL}" ]] && readonly SHOULD_MKTORRENT=${HAS_MKTORRENT} || \
+                                      readonly SHOULD_MKTORRENT=0
+[[ -n "${ISOS_URL}" ]] && readonly SIG_URL=${ISOS_URL}/$(basename ${OUT_DIR})/${IMG_NAME}.sig
+[[ -n "${ISOS_URL}" ]] && readonly SIGURL_MSG="GPG signature is expected to be at: ${SIG_URL}"
+readonly ISO_HOST_PATH=$(echo "$(basename ${OUT_DIR})/${IMG_NAME}" | sed 's|\s|%20|')
+readonly WEBSEEDS_CSV=$(echo $urls | sed -E "s|([^ ]+)|\1${ISO_HOST_PATH}|g" | tr ' ' ',')
+
+readonly PKGLIST_SUCCESS_MSG="\t=> copied $(basename ${PKGLIST})"
+readonly SHA512SUMS_SUCCESS_MSG="\t=> SHA512SUMS appended"
+readonly WHIIRLPOOLSUMS_SUCCESS_MSG="\t=> WHIRLPOOLSUMS appended"
+readonly MAGNET_SUCCESS_MSG="\t=> ${IMG_NAME}.magnet saved"
+readonly TORRENT_SUCCESS_MSG="\t=> ${IMG_NAME}.torrent saved\n${SIGURL_MSG}"
+
+
+MakeMetadata()
+{
+  # copy package lists and create checksums and optional torrent file
+  cp ${PKGLIST} .                                         && echo -e ${PKGLIST_SUCCESS_MSG}
+  rhash --sha512    "${IMG_NAME}" >> SHA512SUMS           && echo -e ${SHA512SUMS_SUCCESS_MSG}
+  rhash --whirlpool "${IMG_NAME}" >> WHIRLPOOLSUMS        && echo -e ${WHIIRLPOOLSUMS_SUCCESS_MSG}
+  rhash --magnet    "${IMG_NAME}"  > "${IMG_NAME}.magnet" && echo -e ${MAGNET_SUCCESS_MSG}
+  (( ${SHOULD_MKTORRENT} )) && MakeTorrent                && echo -e ${TORRENT_SUCCESS_MSG}
+
+  sort SHA512SUMS    --key=2 --output=SHA512SUMS
+  sort WHIRLPOOLSUMS --key=2 --output=WHIRLPOOLSUMS
+}
+
+MakeTorrent()
+{
+  # create torrent file
+  mktorrent --announce=${TORRENT_ANNOUNCE_URL}                                 \
+            --comment="${TORRENT_COMMENT}${SIG_URL}"                           \
+            $([[ -n "${WEBSEEDS_CSV}" ]] && echo "--web-seed=${WEBSEEDS_CSV}") \
+            --piece-length=20 --no-date --verbose                              \
+            "${IMG_NAME}"
+}
+
+
+if   (( ${HAS_RHASH} )) && (( $# == 3 ))
+then echo "[mkmetadata]: preparing metadata"
+
+     pushd ${OUT_DIR} > /dev/null
+     MakeMetadata
+     popd             > /dev/null
+fi
diff --git a/parabolaiso/mkparabolaiso b/parabolaiso/mkparabolaiso
index 248879e..eb2366e 100755
--- a/parabolaiso/mkparabolaiso
+++ b/parabolaiso/mkparabolaiso
@@ -514,11 +514,9 @@ command_iso () {
             "${work_dir}/iso/"
         _msg_info "Done! | $(ls -sh "${out_dir}/${img_name}")"
 
-        cp "${work_dir}/iso/${install_dir}/pkglist.${arch}.txt" ${out_dir}/
-        pushd ${out_dir}                                  > /dev/null
-        sha512sum         "${img_name}" >> SHA512SUMS    2> /dev/null || true
-        rhash --whirlpool "${img_name}" >> WHIRLPOOLSUMS 2> /dev/null || true
-        popd                                              > /dev/null
+        # copy package lists and create checksums and optional torrent files
+        pkglist="${work_dir}/iso/${install_dir}/pkglist.${arch}.txt"
+        mkmetadata "${out_dir}" "${img_name}" "${pkglist}" || true
     fi
 }