From a83cfa78acfa78d690aec7ca86922c8d9f58a01c Mon Sep 17 00:00:00 2001
From: tastytea <tastytea@tastytea.de>
Date: Thu, 18 Jul 2019 18:15:46 +0200
Subject: [PATCH] instanceinfo.sh: Refactored code into functions.

---
 instanceinfo.sh | 255 ++++++++++++++++++++++++++----------------------
 1 file changed, 138 insertions(+), 117 deletions(-)

diff --git a/instanceinfo.sh b/instanceinfo.sh
index 7c3fac7..2fbbf7f 100755
--- a/instanceinfo.sh
+++ b/instanceinfo.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 # Print some basic info about fediverse instances.
 
-# Version: 2019-07-16_2
+# Version: 2019-07-18_1
 
 if [[ -z "${1}" ]]; then
     echo "usage: ${0} DOMAIN" >&2
@@ -19,6 +19,140 @@ function striphtml()
     echo "${extract}" | sed 's/\\u003c/</g' | sed 's/\\u003e/>/g' | sed -E 's/<[^>]+>//g' | sed 's/\\r\\n/ /g' | sed -E 's/(^"|"$)//g'
 }
 
+function parse_nodeinfo()
+{
+    local instance="${1}"
+    local nodeinfo="${2}"
+    json=$(curl -s "${nodeinfo}")
+
+    # shellcheck disable=SC2155
+    local implementation=$(jq -r ".software.name" <<<"${json}")
+    # shellcheck disable=SC2155
+    local version=$(jq -r ".software.version" <<<"${json}")
+    echo "${implementation} ${version} detected."
+
+    # shellcheck disable=SC2155
+    local description=$(jq -r ".metadata.nodeDescription" <<<"${json}")
+    if [[ "${description}" == "null" ]]; then
+        description=$(jq -r ".metadata.shortDescription" <<<"${json}")
+    fi
+    if [[ "${description}" == "null" ]]; then
+        description=$(jq -r ".metadata.nodeName" <<<"${json}")
+    fi
+    [[ "${description}" != "null" ]] && echo "Description: ${description}"
+
+    # shellcheck disable=SC2155
+    local admins=$(jq -r ".metadata.staffAccounts" <<<"${json}")
+    if [[ "${admins}" == "null" ]]; then
+        admins=$(jq -r ".metadata.adminAccount" <<<"${json}")
+    fi
+    [[ "${admins}" != "null" ]] && echo "Admins: ${admins}"
+
+    echo -n "Number of users: "
+    jq -r ".usage.users.total" <<<"${json}"
+
+    # shellcheck disable=SC2155
+    local active=$(jq -r ".usage.users.activeMonth" <<<"${json}")
+    [[ "${active}" != "null" ]] && echo "Active user (month): ${active}"
+
+    echo -n "Open registrations: "
+    jq -r ".openRegistrations" <<<"${json}"
+
+    # shellcheck disable=SC2155
+    local restrictions=$(jq -r ".metadata.federation.mrf_simple" <<<"${json}")
+    [[ "${restrictions}" != "null" ]] && echo "Federation restrictions: ${restrictions}"
+
+    if [[ "${implementation}" == "pleroma" ]]; then
+        echo "Further info, maybe: https://${instance}/about"
+    elif [[ "${implementation}" == "funkwhale" ]]; then
+        echo -n "Artists / tracks: "
+        jq -rj ".metadata.library.artists.total" <<<"${json}"
+        echo -n " / "
+        jq -r ".metadata.library.tracks.total" <<<"${json}"
+    elif [[ "${implementation}" == "mastodon" ]]; then
+        echo "Further info, maybe: https://${instance}/about/more"
+    elif [[ "${implementation}" == "pixelfed" ]]; then
+        echo "Further info, maybe: https://${instance}/site/terms"
+    elif [[ "${implementation}" == "peertube" ]]; then
+        echo "Further info, maybe: https://${instance}/about/instance"
+    fi
+}
+
+function parse_mastodon()
+{
+    local instance="${1}"
+    local mastoinfo="${2}"
+    json=$(curl -s "${mastoinfo}")
+    local implementation=""
+
+    if grep -Eq '"is_(pro|verified)"' <<<"${json}"; then
+        implementation="Gab"
+    elif grep -Eq '"version":"[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+\."' <<<"${json}"; then
+        implementation="Florence"
+    elif grep -Eq '"version":"[0-9]+\.[0-9]+\.[0-9]+"' <<<"${json}"; then
+        implementation="Mastodon"
+    elif grep -Eq '"version":"[0-9]+\.[0-9]+\.[0-9][\._\-]?[a-zA-Z]+"' <<<"${json}"; then
+        implementation="Mastodon fork"
+    fi
+    if [[ -n "${implementation}" ]]; then
+        # shellcheck disable=SC2155
+        local version=$(jq -r ".version" <<<"${json}")
+        echo "${implementation} ${version} detected."
+    fi
+
+    echo -n "Description: "
+    # shellcheck disable=SC2046
+    striphtml $(jq ".description" <<<"${json}")
+
+    # shellcheck disable=SC2155
+    local admin=$(jq -r ".contact_account.acct" <<<"${json}")
+    [[ -n "${admin}" ]] && echo "Admin: https://${instance}/users/${admin}"
+
+    # shellcheck disable=SC2155
+    local email=$(jq -r ".email" <<<"${json}")
+    [[ -n "${email}" ]] && echo "E-Mail: ${email}"
+
+    echo -n "Number of users: "
+    jq -r ".stats.user_count" <<<"${json}"
+
+    echo -n "Open registrations: "
+    jq -r ".registrations" <<<"${json}"
+
+    if [[ "${implementation}" == "Mastodon"
+                    || "${implementation}" == "Mastodon fork"
+                    || "${implementation}" == "Florence" ]]; then
+        echo "Further info, maybe: https://${instance}/about/more"
+    elif [[ "${implementation}" == "Gab" ]]; then
+        echo "Further info, maybe: https://${instance}/about"
+    fi
+}
+
+function parse_misskey()
+{
+    local instance="${1}"
+    local misskeyinfo="${2}"
+    json=$(curl -s -X POST "${misskeyinfo}")
+
+    # shellcheck disable=SC2155
+    local version=$(jq -r ".version" <<<"${json}")
+    echo "Misskey ${version} detected."
+
+    # shellcheck disable=SC2155
+    local email=$(jq -r ".maintainerEmail" <<<"${json}")
+    [[ -n "${email}" ]] && echo "E-Mail: ${email}"
+
+    # shellcheck disable=SC2155
+    local users=$(curl -s -X POST "https://${instance}/api/stats" | jq -r ".usersCount")
+    [[ -n ${users} ]] && echo "Number of users: ${users}"
+
+    echo -n "Open registrations: "
+    jq -r ".features.registration" <<<"${json}"
+
+    # shellcheck disable=SC2155
+    local tos=$(jq -r ".ToSUrl" <<<"${json}")
+    [[ -n "${tos}" ]] && echo "ToS: ${tos}"
+}
+
 function main()
 {
     local instance="${1}"
@@ -29,126 +163,13 @@ function main()
 
     if curl -sILf -X POST "${misskeyinfo}" | grep -iq 'Content-Type: application/json'; then
         echo "Misskey API found."
-        json=$(curl -s -X POST "${misskeyinfo}")
-
-        # shellcheck disable=SC2155
-        local version=$(jq -r ".version" <<<"${json}")
-        echo "Misskey ${version} detected."
-
-        # shellcheck disable=SC2155
-        local email=$(jq -r ".maintainerEmail" <<<"${json}")
-        [[ -n "${email}" ]] && echo "E-Mail: ${email}"
-
-        # shellcheck disable=SC2155
-        local users=$(curl -s -X POST "https://${instance}/api/stats" | jq -r ".usersCount")
-        [[ -n ${users} ]] && echo "Number of users: ${users}"
-
-        echo -n "Open registrations: "
-        jq -r ".features.registration" <<<"${json}"
-
-        # shellcheck disable=SC2155
-        local tos=$(jq -r ".ToSUrl" <<<"${json}")
-        [[ -n "${tos}" ]] && echo "ToS: ${tos}"
+        parse_misskey "${instance}" "${misskeyinfo}"
     elif curl -sILf "${nodeinfo}" | grep -iq 'Content-Type: application/json'; then
         echo "Nodeinfo found."
-        json=$(curl -s "${nodeinfo}")
-
-        # shellcheck disable=SC2155
-        local implementation=$(jq -r ".software.name" <<<"${json}")
-        # shellcheck disable=SC2155
-        local version=$(jq -r ".software.version" <<<"${json}")
-        echo "${implementation} ${version} detected."
-
-        # shellcheck disable=SC2155
-        local description=$(jq -r ".metadata.nodeDescription" <<<"${json}")
-        if [[ "${description}" == "null" ]]; then
-            description=$(jq -r ".metadata.shortDescription" <<<"${json}")
-        fi
-        if [[ "${description}" == "null" ]]; then
-            description=$(jq -r ".metadata.nodeName" <<<"${json}")
-        fi
-        [[ "${description}" != "null" ]] && echo "Description: ${description}"
-
-        # shellcheck disable=SC2155
-        local admins=$(jq -r ".metadata.staffAccounts" <<<"${json}")
-        if [[ "${admins}" == "null" ]]; then
-            admins=$(jq -r ".metadata.adminAccount" <<<"${json}")
-        fi
-        [[ "${admins}" != "null" ]] && echo "Admins: ${admins}"
-
-        echo -n "Number of users: "
-        jq -r ".usage.users.total" <<<"${json}"
-
-        # shellcheck disable=SC2155
-        local active=$(jq -r ".usage.users.activeMonth" <<<"${json}")
-        [[ "${active}" != "null" ]] && echo "Active user (month): ${active}"
-
-        echo -n "Open registrations: "
-        jq -r ".openRegistrations" <<<"${json}"
-
-        # shellcheck disable=SC2155
-        local restrictions=$(jq -r ".metadata.federation.mrf_simple" <<<"${json}")
-        [[ "${restrictions}" != "null" ]] && echo "Federation restrictions: ${restrictions}"
-
-        if [[ "${implementation}" == "pleroma" ]]; then
-            echo "Further info, maybe: https://${instance}/about"
-        elif [[ "${implementation}" == "funkwhale" ]]; then
-            echo -n "Artists / tracks: "
-            jq -rj ".metadata.library.artists.total" <<<"${json}"
-            echo -n " / "
-            jq -r ".metadata.library.tracks.total" <<<"${json}"
-        elif [[ "${implementation}" == "mastodon" ]]; then
-            echo "Further info, maybe: https://${instance}/about/more"
-        elif [[ "${implementation}" == "pixelfed" ]]; then
-            echo "Further info, maybe: https://${instance}/site/terms"
-        elif [[ "${implementation}" == "peertube" ]]; then
-            echo "Further info, maybe: https://${instance}/about/instance"
-        fi
+        parse_nodeinfo "${instance}" "${nodeinfo}"
     elif curl -sILf "${mastoinfo}" | grep -iq 'Content-Type: application/json'; then
         echo "Mastodon API found."
-        json=$(curl -s "${mastoinfo}")
-        local implementation=""
-
-        if grep -Eq '"is_(pro|verified)"' <<<"${json}"; then
-            implementation="Gab"
-        elif grep -Eq '"version":"[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+\."' <<<"${json}"; then
-            implementation="Florence"
-        elif grep -Eq '"version":"[0-9]+\.[0-9]+\.[0-9]+"' <<<"${json}"; then
-            implementation="Mastodon"
-        elif grep -Eq '"version":"[0-9]+\.[0-9]+\.[0-9][\._\-]?[a-zA-Z]+"' <<<"${json}"; then
-            implementation="Mastodon fork"
-        fi
-        if [[ -n "${implementation}" ]]; then
-            # shellcheck disable=SC2155
-            local version=$(jq -r ".version" <<<"${json}")
-            echo "${implementation} ${version} detected."
-        fi
-
-        echo -n "Description: "
-        # shellcheck disable=SC2046
-        striphtml $(jq ".description" <<<"${json}")
-
-        # shellcheck disable=SC2155
-        local admin=$(jq -r ".contact_account.acct" <<<"${json}")
-        [[ -n "${admin}" ]] && echo "Admin: https://${instance}/users/${admin}"
-
-        # shellcheck disable=SC2155
-        local email=$(jq -r ".email" <<<"${json}")
-        [[ -n "${email}" ]] && echo "E-Mail: ${email}"
-
-        echo -n "Number of users: "
-        jq -r ".stats.user_count" <<<"${json}"
-
-        echo -n "Open registrations: "
-        jq -r ".registrations" <<<"${json}"
-
-        if [[ "${implementation}" == "Mastodon"
-                || "${implementation}" == "Mastodon fork"
-                || "${implementation}" == "Florence" ]]; then
-            echo "Further info, maybe: https://${instance}/about/more"
-        elif [[ "${implementation}" == "Gab" ]]; then
-            echo "Further info, maybe: https://${instance}/about"
-        fi
+        parse_mastodon "${instance}" "${mastoinfo}"
     else
         echo "Could not detect type of server."
         curl -I "https://${instance}/"