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Use CHAOS TXT local.api.txt instead of trying to parse pihole-FTL --config webserver.ports
Signed-off-by: DL6ER <dl6er@dl6er.de>
This commit is contained in:
DL6ER
parent
6016131280
commit
96bf07863f
2 changed files with 47 additions and 49 deletions
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@ -21,62 +21,60 @@
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TestAPIAvailability() {
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# as we are running locally, we can get the port value from FTL directly
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local ports port availabilityResonse
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ports="$(pihole-FTL --config webserver.port)"
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port="${ports%%,*}"
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local chaos_api_list availabilityResonse
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# Iterate over comma separated list of ports
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while [ -n "${ports}" ]; do
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# if the port ends with an "s", it is a secure connection
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if [ "${port#"${port%?}"}" = "s" ]; then
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# remove the "s" from the port
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API_PROT="https"
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API_PORT="${port%?}"
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elif [ "${port#"${port%?}"}" = "r" ]; then
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# Ignore this port, the client may not be able to follow the
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# redirected target when FTL is not used as local resolver
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API_PORT="0"
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# Query the API URLs from FTL using CHAOS TXT local.api.ftl
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# The result is a space-separated enumeration of full URLs
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# e.g., "http://localhost:80/api" "https://localhost:443/api"
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chaos_api_list="$(dig +short chaos txt local.api.ftl @127.0.0.1)"
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# If the query was not successful, the variable is empty
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if [ -z "${chaos_api_list}" ]; then
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echo "API not available. Please check connectivity"
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exit 1
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fi
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# Iterate over space-separated list of URLs
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while [ -n "${chaos_api_list}" ]; do
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# Get the first URL
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API_URL="${chaos_api_list%% *}"
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# Strip leading and trailing quotes
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API_URL="${API_URL%\"}"
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API_URL="${API_URL#\"}"
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# Test if the API is available at this URL
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availabilityResonse=$(curl -skS -o /dev/null -w "%{http_code}" "${API_URL}auth")
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# Test if http status code was 200 (OK), 308 (redirect, we follow) 401 (authentication required)
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if [ ! "${availabilityResonse}" = 200 ] && [ ! "${availabilityResonse}" = 308 ] && [ ! "${availabilityResonse}" = 401 ]; then
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# API is not available at this port/protocol combination
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API_PORT=""
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else
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# otherwise it is an insecure (plain HTTP) connection
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API_PROT="http"
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API_PORT="${port}"
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# API is available at this URL combination
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break
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fi
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if [ ! "${API_PORT}" = "0" ]; then
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# If the port is of form "ip:port", we need to remove everything before
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# the last ":" in the string, e.g., "[::]:80" -> "80"
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if [ "${API_PORT#*:}" != "${API_PORT}" ]; then
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API_PORT="${API_PORT##*:}"
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fi
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# Remove the first URL from the list
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local last_api_list
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last_api_list="${chaos_api_list}"
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chaos_api_list="${chaos_api_list#* }"
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API_URL="${API_PROT}://localhost:${API_PORT}/api"
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availabilityResonse=$(curl -skS -o /dev/null -w "%{http_code}" "${API_URL}/auth")
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# Test if http status code was 200 (OK), 308 (redirect, we follow) 401 (authentication required)
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if [ ! "${availabilityResonse}" = 200 ] && [ ! "${availabilityResonse}" = 308 ] && [ ! "${availabilityResonse}" = 401 ]; then
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# API is not available at this port/protocol combination
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API_PORT="0"
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else
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# API is available at this port/protocol combination
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break
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fi
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# If the list did not change, we are at the last element
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if [ "${last_api_list}" = "${chaos_api_list}" ]; then
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# Remove the last element
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chaos_api_list=""
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fi
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# If the loop has not been broken, remove the first port from the list
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# and get the next port
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ports="${ports#*,}"
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port="${ports%%,*}"
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done
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# if API_PORT is 0, no working API port was found
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if [ "${API_PORT}" = "0" ]; then
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# if API_PORT is empty, no working API port was found
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if [ -n "${API_PORT}" ]; then
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echo "API not available at: ${API_URL}"
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echo "Exiting."
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exit 1
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fi
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}
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Authenthication() {
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Authentication() {
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# Try to authenticate
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LoginAPI
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@ -96,7 +94,7 @@ Authenthication() {
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}
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LoginAPI() {
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sessionResponse="$(curl -skS -X POST "${API_URL}/auth" --user-agent "Pi-hole cli " --data "{\"password\":\"${password}\"}" )"
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sessionResponse="$(curl -skS -X POST "${API_URL}auth" --user-agent "Pi-hole cli " --data "{\"password\":\"${password}\"}" )"
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if [ -z "${sessionResponse}" ]; then
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echo "No response from FTL server. Please check connectivity"
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@ -108,11 +106,11 @@ LoginAPI() {
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}
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DeleteSession() {
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# if a valid Session exists (no password required or successful authenthication) and
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# SID is not null (successful authenthication only), delete the session
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# if a valid Session exists (no password required or successful Authentication) and
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# SID is not null (successful Authentication only), delete the session
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if [ "${validSession}" = true ] && [ ! "${SID}" = null ]; then
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# Try to delete the session. Omit the output, but get the http status code
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deleteResponse=$(curl -skS -o /dev/null -w "%{http_code}" -X DELETE "${API_URL}/auth" -H "Accept: application/json" -H "sid: ${SID}")
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deleteResponse=$(curl -skS -o /dev/null -w "%{http_code}" -X DELETE "${API_URL}auth" -H "Accept: application/json" -H "sid: ${SID}")
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case "${deleteResponse}" in
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"200") printf "%b" "A session that was not created cannot be deleted (e.g., empty API password).\n";;
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@ -121,14 +121,14 @@ Main(){
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# or b) for the /search endpoint (webserver.api.searchAPIauth) no authentication is required.
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# Therefore, we try to query directly without authentication but do authenticat if 401 is returned
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data=$(GetFTLData "/search/${domain}?N=${max_results}&partial=${partial}")
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data=$(GetFTLData "search/${domain}?N=${max_results}&partial=${partial}")
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if [ "${data}" = 401 ]; then
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# Unauthenticated, so authenticate with the FTL server required
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Authenthication
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Authentication
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# send query again
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data=$(GetFTLData "/search/${domain}?N=${max_results}&partial=${partial}")
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data=$(GetFTLData "search/${domain}?N=${max_results}&partial=${partial}")
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fi
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GenerateOutput "${data}"
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