check_system: add check-blocked.sh for testing site access through gateways

check_system/check-blocked.sh

+#!/bin/sh
+# Check if sites are blocked/throttled through different gateways
+# Usage: check-blocked.sh [site...]
+# Without arguments checks the default site list.
+#
+# Tests each site through configured gateways via SOCKS5 proxies
+# (microsocks :1080 on each egw/ogw container).
+# Two-step check: availability (eget --check-url), then speed (eget --speedtest).
+#
+# Verdicts per gateway:
+#   OK(speed)  — available, speed > 0 MB/s
+#   SLOW(speed) — available, speed < 0.10 MB/s (throttled)
+#   BLOCK      — unavailable (connection refused / timeout)
+#   FAIL       — eget error
+
+EGET="epm tool eget"
+
+# Gateway list: name and SOCKS5 proxy URL
+# Extend this list as needed.
+# "direct" = no proxy (default route of this machine).
+GATEWAYS="
+direct
+gre.hetzner     socks5h://91.232.225.122:1080
+gre.beget       socks5h://91.232.225.124:1080
+ikev2.beget     socks5h://91.232.225.130:1080
+"
+
+# Default sites to check
+DEFAULT_SITES="instagram.com facebook.com youtube.com rutracker.org flibusta.is"
+
+SLOW_THRESHOLD="0.10"  # MB/s — below this is "throttled"
+TIMEOUT=15
+
+# ---------------------------------------------------------------
+
+TMPFILE=$(mktemp)
+trap 'rm -f "$TMPFILE"' EXIT
+
+# Run eget with optional SOCKS5 proxy
+# Usage: run_eget [proxy_url] [eget_args...]
+run_eget()
+{
+    local proxy="$1"
+    shift
+    if [ -n "$proxy" ] ; then
+        EGET_BACKEND=curl ALL_PROXY="$proxy" timeout "$TIMEOUT" $EGET "$@"
+    else
+        timeout "$TIMEOUT" $EGET "$@"
+    fi
+}
+
+# Parse gateway list into arrays
+gw_count=0
+while IFS=' 	' read -r name proxy ; do
+    [ -z "$name" ] && continue
+    eval "gw_name_$gw_count=\"$name\""
+    eval "gw_proxy_$gw_count=\"$proxy\""
+    gw_count=$((gw_count + 1))
+done <<EOF
+$(echo "$GATEWAYS" | sed '/^$/d')
+EOF
+
+# Determine sites
+sites="${*:-$DEFAULT_SITES}"
+
+# Print banner
+hostname=$(hostname -f 2>/dev/null || hostname)
+printf "Site availability & download speed test from %s\n" "$hostname"
+printf "Gateways: SOCKS5 proxies on egw/ogw containers (microsocks :1080)\n\n"
+
+# Print header
+printf "%-20s" "site"
+i=0
+while [ "$i" -lt "$gw_count" ] ; do
+    eval "name=\$gw_name_$i"
+    printf "  %-14s" "$name"
+    i=$((i + 1))
+done
+printf "\n"
+
+# Separator
+printf "%-20s" "--------------------"
+i=0
+while [ "$i" -lt "$gw_count" ] ; do
+    printf "  %-14s" "--------------"
+    i=$((i + 1))
+done
+printf "\n"
+
+# Check each site
+for site in $sites ; do
+    url="https://$site/"
+    printf "%-20s" "$site"
+
+    i=0
+    while [ "$i" -lt "$gw_count" ] ; do
+        eval "proxy=\$gw_proxy_$i"
+
+        # Step 1: availability
+        if run_eget "$proxy" --check-url "$url" >/dev/null 2>&1 ; then
+            # Step 2: speed
+            speed=$(run_eget "$proxy" --speedtest --tsv "$url" 2>/dev/null | cut -f2)
+            [ -z "$speed" ] && speed="0.00"
+
+            # Compare with threshold (using awk for float comparison)
+            is_slow=$(echo "$speed $SLOW_THRESHOLD" | awk '{print ($1 < $2) ? 1 : 0}')
+
+            if [ "$is_slow" = "1" ] ; then
+                cell="SLOW($speed)"
+            else
+                cell="OK($speed)"
+            fi
+        else
+            cell="BLOCK"
+        fi
+
+        printf "  %-14s" "$cell"
+        i=$((i + 1))
+    done
+    printf "\n"
+done
+
+echo
+echo "Legend: OK(N) = available, N MB/s download speed"
+echo "        SLOW(N) = available but speed < ${SLOW_THRESHOLD} MB/s (throttled)"
+echo "        BLOCK = connection failed (blocked or down)"