youtube-utils/scripts/yt-api-helper.sh

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#!/bin/sh
# shellcheck disable=SC2236,SC2237
#
# ^ Allow the use of `! -z` and `! [ -z]` as those are
# more intuitive than `-n`
#
# Globals
#
ALL_CLIENTS="web
web-embed
web-mobile
android
android-embed
apple-ios
tv-html5
tv-html5-embed"
#
# Utility functions
#
print_usage()
{
(
echo "Usage: yt-api-helper -i [-c <client>] [-e <endpoint>]"
echo "Usage: yt-api-helper -c <client> -e <endpoint> -d <data>"
) >&2
}
print_help()
{
print_usage
(
echo ""
echo "Options:"
echo " -c,--client Client to use. Mandatory in non-interactive mode."
echo " -d,--data Raw data to send to the API"
echo " -e,--endpoint Youtube endpoint to request."
echo " Mandatory in non-interactive mode"
echo " -h,--help Show this help"
echo " -i,--interactive Run in interactive mode"
echo " -o,--output Print output to file instead of stdout"
echo ""
echo " --debug Show what is sent to the API"
echo ""
) >&2
print_clients
print_endpoints
}
print_clients()
{
(
echo ""
echo "Available clients:"
for client in $ALL_CLIENTS; do
echo " - $client"
done
) >&2
}
print_endpoints()
{
(
echo ""
echo "Available endpoints:"
echo " - browse"
echo " - browse-continuation"
echo " - next"
echo " - next-continuation"
echo " - player"
echo " - search"
echo " - resolve"
) >&2
}
query_with_default()
{
prompt="$1"
default="$2"
printf "%s [%s]: " "$prompt" "$default" >&2
read -r data
if [ -z "$data" ]; then
echo "$default"
else
echo "$data"
fi
}
query_with_error()
{
prompt="$1"
error_message="$2"
printf "%s []: " "$prompt" >&2
read -r data
if [ -z "$data" ]; then
error_msg "$error_message"
exit 1
else
echo "$data"
fi
}
is_arg()
{
case $1 in
-c|--client) true;;
-d|--data) true;;
-e|--endpoint) true;;
-h|--help) true;;
-i|--interactive) true;;
-o|--output) true;;
--debug) true;;
*) false;;
esac
}
error_msg()
{
printf "Error: %s\n" "$1" >&2
}
#
# Client selection function
#
client_select()
{
# Default API key, used by most clients
apikey="AIzaSyAO_FJ2SlqU8Q4STEHLGCilw_Y9_11qcW8"
# Default user-agent
user_agent="Mozilla/5.0 (Windows NT 10.0; rv:78.0) Gecko/20100101 Firefox/78.0"
# Reset values, in case this function is used multiple times
client_name=""
client_vers=""
client_extra_device_make=""
client_extra_device_model=""
client_extra_os_name=""
client_extra_os_vers=""
client_extra_platform=""
client_extra_form_factor=""
case "$1" in
web)
client_name="WEB"
client_vers="2.20230217.01.00"
;;
web-embed)
client_name="WEB_EMBEDDED_PLAYER"
client_vers="1.20230217.01.0"
;;
web-mobile)
client_name="MWEB"
client_vers="2.20230216.06.00"
;;
android)
apikey="AIzaSyA8eiZmM1FaDVjRy-df2KTyQ_vz_yYM39w"
client_name="ANDROID"
client_vers="17.31.35"
;;
android-embed)
client_name="ANDROID_EMBEDDED_PLAYER"
client_vers="17.31.35"
;;
apple-ios)
apikey="AIzaSyB-63vPrdThhKuerbB2N_l7Kwwcxj6yUAc"
client_name="IOS"
client_vers="17.31.4"
client_extra_device_make="Apple"
client_extra_device_model="iPhone11,8"
client_extra_os_vers="15.2.0"
user_agent="com.google.ios.youtube/17.31.4 (iPhone11,8; U; CPU iOS 15_2 like Mac OS X; en_GB)"
;;
tv-html5)
client_name="TVHTML5"
client_vers="7.20220325"
;;
tv-html5-embed)
client_name="TVHTML5_SIMPLY_EMBEDDED_PLAYER"
client_vers="2.0"
screen="EMBED"
;;
*)
error_msg "Unknown client '$client_option'"
print_clients
exit 1
;;
esac
}
#
# Endpoint selection function
#
endpoint_select()
{
case "$1" in
browse)
endpoint="youtubei/v1/browse"
if [ $interactive = true ]; then
browse_id=$(query_with_default "Enter browse ID" "UCXuqSBlHAE6Xw-yeJA0Tunw")
endpoint_data="\"browseId\":\"${browse_id}\""
fi
;;
browse-cont*|browse-tok*)
endpoint="youtubei/v1/browse"
if [ $interactive = true ]; then
token=$(query_with_error "Enter continuation token" "token required")
endpoint_data="\"continuation\":\"${token}\""
fi
;;
player|next)
endpoint="youtubei/v1/$endpoint_option"
if [ $interactive = true ]; then
vid=$(query_with_default "Enter video ID" "dQw4w9WgXcQ")
endpoint_data="\"videoId\":\"${vid}\""
fi
;;
next-cont*|next-tok*)
endpoint="youtubei/v1/next"
if [ $interactive = true ]; then
token=$(query_with_error "Enter continuation token" "token required")
endpoint_data="\"continuation\":\"${token}\""
fi
;;
search)
endpoint="youtubei/v1/search"
if [ $interactive = true ]; then
# Get search query, and escape backslashes and double quotes
query=$(
query_with_error "Enter your search query" "search term required" |
sed -e 's/\\/\\\\/g' -e 's/"/\\"/g'
)
endpoint_data="\"query\":\"${query}\""
fi
;;
resolve)
endpoint="youtubei/v1/navigation/resolve_url"
if [ $interactive = true ]; then
url=$(query_with_error "Enter URL" "URL required")
endpoint_data="\"url\":\"${url}\""
fi
;;
*)
error_msg "Unknown endpoint '$1'"
print_endpoints
exit 1
;;
esac
# Interactively request additional parameters for the supported endpoints
if [ $interactive = true ]
then
case "$1" in
browse|player|search)
params=$(query_with_default "Enter optional parameters (base64-encoded protobuf)" "")
if [ ! -z "$params" ]; then
endpoint_data="${endpoint_data},\"params\":\"${params}\""
fi
;;
esac
fi
}
#
# Function to craft the client data
#
make_request_data()
{
client="\"hl\":\"${hl}\",\"gl\":\"${gl}\""
client="${client},\"deviceMake\":\"${client_extra_device_make}\""
client="${client},\"deviceModel\":\"${client_extra_device_model}\""
if ! [ -z "$screen" ]; then
client="${client},\"clientScreen\":\"${screen}\""
fi
client="${client},\"clientName\":\"${client_name}\""
client="${client},\"clientVersion\":\"${client_vers}\""
if ! [ -z "$client_extra_os_name" ]; then
client="${client},\"osName\":\"${client_extra_os_name}\""
fi
if ! [ -z "$client_extra_os_vers" ]; then
client="${client},\"osVersion\":\"${client_extra_os_vers}\""
fi
if ! [ -z "$client_extra_platform" ]; then
client="${client},\"platform\":\"${client_extra_platform}\""
fi
if ! [ -z "$client_extra_form_factor" ]; then
client="${client},\"clientFormFactor\":\"${client_extra_form_factor}\""
fi
data="{\"context\":{\"client\":{$client}},$endpoint_data}"
# Basic debug
if [ $debug = true ]; then
if command -v jq >&2 >/dev/null; then
printf "\nSending: %s\n\n" "$data" | jq . >&2
else
printf "\nSending: %s\n\n" "$data" | sed 's/{/{\n/g; s/}/\n}/g; s/,/,\n/g' >&2
fi
fi
# Return data
printf "{\"context\":{\"client\":{%s}},%s}\n" "$client" "$endpoint_data"
}
#
# Final command - send request to Youtube
#
send_request()
{
request_data="$1"
output_file="$2"
url="https://www.youtube.com/${endpoint}?key=${apikey}"
# Headers
hdr_ct='Content-Type: application/json; charset=utf-8'
hdr_ua="User-Agent: ${user_agent}"
# Run!
temp_dl=_curl_$(date '+%s')
curl --compressed -H "$hdr_ct" -H "$hdr_ua" --data "$request_data" "$url" | \
sed -E '
/^\s+"(clickT|t)rackingParams.+,$/d
s/,?\n\s+"(clickT|t)rackingParams.+$//
' > "$temp_dl"
# Print to STDOUT if no output file was given
if [ -z "$output_file" ]; then
cat "$temp_dl"
rm "$temp_dl"
else
mv -- "$temp_dl" "$output_file"
fi
}
#
# Parameters init
#
interactive=false
debug=false
client_option=""
endpoint_option=""
data=""
#
# Parse arguments
#
while :; do
# Exit if no more arguments to parse
if [ $# -eq 0 ]; then break; fi
case $1 in
-c|--client)
shift
if [ $# -eq 0 ] || is_arg "$1"; then
error_msg "missing argument after -c/--client"
print_usage
exit 2
fi
client_option=$1
;;
-d|--data)
shift
if [ $# -eq 0 ] || is_arg "$1"; then
error_msg "missing argument after -d/--data"
print_usage
exit 2
fi
data=$1
;;
-e|--endpoint)
shift
if [ $# -eq 0 ] || is_arg "$1"; then
error_msg "missing argument after -e/--endpoint"
print_usage
exit 2
fi
endpoint_option=$1
;;
-h|--help)
print_help
exit 0
;;
-i|--interactive)
interactive=true
;;
-o|--output)
shift
if [ $# -eq 0 ] || is_arg "$1"; then
error_msg "missing argument after -o/--output"
print_usage
exit 2
fi
output="$1"
;;
--debug)
debug=true
;;
*)
error_msg "unknown argument '$1'"
print_usage
exit 2
;;
esac
shift
done
#
# Input validation
#
if [ ! -z "$data" ]; then
# Can't pass data in interactive mode
if [ $interactive = true ]; then
error_msg "-d/--data can't be used with -i/--interactive"
print_usage
exit 2
fi
# In non-interactive mode, we still need to pass a client
# so the right API key is passed as a URL parameter
if [ -z "$client_option" ]; then
error_msg "-c/--client is required to select an API key"
print_usage
exit 2
fi
# Endpoint must be given if non-interactive mode
if [ -z "$endpoint_option" ]; then
error_msg "In non-interactive mode, an endpoint must be passed with -e/--endpoint"
print_usage
exit 2
fi
fi
if [ -z "$data" ] && [ $interactive = false ]; then
# Data must be given if non-interactive mode
error_msg "In non-interactive mode, data must be passed with -d/--data"
print_usage
exit 2
fi
if [ -z "$output" ] && [ $interactive = true ]; then
confirm=$(query_with_default "\nIt's recommended to use --output in interactive mode.\nContinue?" "No")
case $confirm in
[Yy]|[Yy][Ee][Ss]) ;;
*) exit 0;;
esac
fi
#
# Required parameters. Ask if not provided
#
if [ -z "$client_option" ]; then
if [ $interactive = true ]; then
print_clients
client_option=$(query_with_default "\nEnter a client to use" "web")
else
exit 2
fi
fi
if [ -z "$endpoint_option" ]; then
if [ $interactive = true ]; then
print_endpoints
endpoint_option=$(query_with_default "\nEnter an endpoint to request" "")
else
exit 2
fi
fi
# new line
echo >&2
# Interactive language/region selection
if [ $interactive = true ]; then
hl=$(query_with_default "Enter content language (hl)" "en")
gl=$(query_with_default "Enter content region (gl)" "US")
fi
#
# Run the request
#
client_select "$client_option"
endpoint_select "$endpoint_option"
if [ $interactive = true ]; then
data=$(make_request_data)
fi
send_request "$data" "$output"