3 files changed, 72 insertions, 0 deletions
diff --git a/.gitignore b/.gitignore
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--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+cj
+.cj
+.old/*
diff --git a/README.md b/README.md
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index 0000000..8e99ed0
--- /dev/null
+++ b/README.md
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+# README for obs-dl.sh
+This script makes it easy to download an asset from the [Open Build Service](https://build.opensuse.org/) from cli.
+
+## Upstream
+This repository is the original: [https://gitlab.com/bgstack15/obs-dl](https://gitlab.com/bgstack15/obs-dl)
+
+## Alternatives
+Download the assets in a web browser and a login session.
+
+## How to use
+Set environment variables USERNAME and PASSWORD and then run command
+
+    ./obs-dl https://build.opensuse.org/source/home:bgstack15/freefilesync/_service:recompress:tar_scm:FreeFileSync.tar.gz?rev=9410c094a8ce7fb9df4042c405ea0c7b
+
+## Reason for existing
+My build server is headless and I don't always want to use my desktop to download a large asset just to push it up to my dev system.
+
+## Dependencies
+Bourne shell
+
+## References
+man 1 curl
+Original work.
diff --git a/obs-dl.sh b/obs-dl.sh
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--- /dev/null
+++ b/obs-dl.sh
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+#!/bin/sh
+# Startdate: 2020-11-30
+# Works!
+
+ua="Mozilla/5.0 (X11; Linux x86_64; rv:68.l9) Gecko/20100101" # not that important
+cj=./.cj
+file="${1}" ; test -z "${file}" && { echo "Need file to download! Aborted." 1>&2 ; exit 1 ; }
+test -z "${OBS_PASSWORD}" && { echo "Need OBS_PASSWORD set. Aborted." 1>&2 ; exit 1 ; }
+test -z "${OBS_USERNAME}" && { echo "Need OBS_USERNAME set. Aborted." 1>&2 ; exit 1 ; }
+
+# Functions
+url_var() {
+   LC_ALL=C
+   ___encoded=""
+   ___i=""
+   ___c=""
+   ___temp="$( mktemp )"
+   # needs GNU head
+   echo "${1}" | sed -r -e 's/(.)/\1\n/g;' | head -n -1 | while read char ;
+   do
+      #echo "Char: ${char}"
+      test '\0' != "${char}" &&
+      case "${char}" in
+         [a-zA-Z0-9/_.~-] ) ___encoded="${___encoded}${char}" ;;
+         * ) ___encoded="${___encoded}$( $( which printf ) "%%%02x" "'${char}" )" ;;
+      esac
+      echo "${___encoded}" > "${___temp}"
+   done
+   ___encoded="$( cat "${___temp}" )" ; rm -f "${___temp}"
+   echo "${___encoded}"
+}
+
+# html-encode the password, because of special characters...
+OBS_PASSWORD="$( url_var "${OBS_PASSWORD}" )"
+
+# visit page to get authenticity token and also the first part of the cookie, openSUSE_session
+page="$( curl -s -b "${cj}" -c "${cj}" 'https://build.opensuse.org/' -H 'Host: build.opensuse.org' -H "User-Agent: ${ua}" -H 'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8' -H 'Accept-Language: en-US,en;q=0.5' --compressed -H 'Connection: keep-alive' )"
+# must extract "csrf-token" value for "authenticity_token"
+at="$( echo "${page}" | awk -F'"' '/csrf-token/{print $4}' | sed -r -e 's/\+/%2B/g;' -e 's/=/%3D/g;' )"
+
+# authenticate to get the _obs_api_session part of the cookie
+curl -s -b "${cj}" -c "${cj}" 'https://build.opensuse.org/ICSLogin/auth-up' -H 'Host: build.opensuse.org' -H "User-Agent: ${ua}" -H 'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8' -H 'Accept-Language: en-US,en;q=0.5' --compressed -H 'Referer: https://build.opensuse.org/' -H 'Connection: keep-alive' --data-raw "authenticity_token=${at}&context=default&proxypath=reserve&message=Please+log+in&username=${OBS_USERNAME}&password=${OBS_PASSWORD}&login=Log+In"
+
+# and now download the real file
+# it is possible that in the future I will need to adjust "Referer" to be directly related to the requested ${file}
+curl -b "${cj}" -c "${cj}" "${file}" -J -O -R -H 'Host: build.opensuse.org' -H "User-Agent: ${ua}" -H 'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8' -H 'Accept-Language: en-US,en;q=0.5' --compressed -H 'Referer: https://build.opensuse.org/project/show/home:bgstack15' -H 'Connection: keep-alive'