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fixed download scraping for Astro frontend, added manual link fallback and self-update for script #3

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fixed download scraping for Astro frontend, added manual link fallback and self-update for script #3

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219 changes: 190 additions & 29 deletions install.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,8 @@ DO_STATUS=0
DO_PRINT_DOWNLOADS=0
FORCE=0
YES=0
INSTALLER_VERSION="1.1.0"
SKIP_SELF_UPDATE=0
INSTALLER_URL="${ANTIGRAVITY_LINUX_INSTALLER_URL:-}"

log() { printf '%s\n' "$*"; }
Expand Down Expand Up @@ -80,6 +82,7 @@ while [ $# -gt 0 ]; do
--status) DO_STATUS=1 ;;
--print-downloads) DO_PRINT_DOWNLOADS=1 ;;
--uninstall) DO_UNINSTALL=1 ;;
--no-self-update) SKIP_SELF_UPDATE=1 ;;
-y|--yes) YES=1 ;;
-h|--help) usage; exit 0 ;;
*) err "Unknown option: $1" ;;
Expand Down Expand Up @@ -126,47 +129,159 @@ resolve_main_bundle() {
local tmpdir="$1"
local html="$tmpdir/download.html"
local js="$tmpdir/download.js"
curl -fsSL --compressed --retry 3 -o "$html" "$DOWNLOAD_PAGE"
local main_js_url
main_js_url=$(python3 - "$html" "$DOWNLOAD_PAGE" <<'PY'

curl -fsSL -L -H "User-Agent: Mozilla/5.0 (X11; Linux x86_64)" --compressed --retry 3 -o "$html" "$DOWNLOAD_PAGE" || true

python3 - "$html" "$DOWNLOAD_PAGE" "$tmpdir" <<'PY'
import re, sys
from pathlib import Path
from urllib.parse import urljoin
html = Path(sys.argv[1]).read_text(errors='replace')
import urllib.request

html_path = Path(sys.argv[1])
page = sys.argv[2]
# Prefer the application bundle that contains the download data.
matches = re.findall(r'(?:src|href)=["\']([^"\']*main-[^"\']+\.js)["\']', html)
if not matches:
matches = re.findall(r'(?:src|href)=["\']([^"\']+\.js)["\']', html)
if not matches:
raise SystemExit('Could not find JavaScript bundle on the official Antigravity download page')
print(urljoin(page, matches[-1]))
tmpdir = Path(sys.argv[3])
js_out = tmpdir / "download.js"

if not html_path.exists():
sys.exit(0)

html = html_path.read_text(errors='replace')

js_urls = re.findall(r'(?:src|href)=["\']([^"\']+\.js(?:\?[^"\']*)?)["\']', html)
js_urls += re.findall(r'["\']([^"\']+\/_astro\/[^"\']+\.js)["\']', html)
js_urls += re.findall(r'["\']([^"\']+\/_next\/static\/[^"\']+\.js)["\']', html)

combined_content = [html]

headers = {'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64)'}
for rel_url in set(js_urls):
if rel_url.startswith('http://') or rel_url.startswith('https://'):
full_url = rel_url
else:
full_url = urljoin(page, rel_url)
try:
req = urllib.request.Request(full_url, headers=headers)
with urllib.request.urlopen(req, timeout=5) as resp:
combined_content.append(resp.read().decode('utf-8', errors='replace'))
except Exception:
pass

js_out.write_text("\n".join(combined_content), encoding='utf-8')
PY

if [ -s "$js" ]; then
printf '%s\n' "$js"
else
printf '%s\n' "$html"
fi
}

prompt_manual_url() {
local product="$1"
local platform="$2"
local url=""

printf '\n' >&2
warn "Automatic download link resolution failed for Antigravity ${product} (${platform})."
printf '%s\n' "================================================================================" >&2
printf '%s\n' "MANUAL ACTION REQUIRED:" >&2
printf '%s\n' "1. Open the official download page in your browser:" >&2
printf '%s\n' " ${DOWNLOAD_PAGE}" >&2
printf '%s\n' "2. Right-click the download link for ${product} (${platform}) and select 'Copy Link Address'." >&2
printf '%s\n' "================================================================================" >&2
printf '\n' >&2

if [ -e /dev/tty ]; then
printf "Please paste the direct download URL here: " > /dev/tty
read -r url < /dev/tty
elif [ -t 0 ]; then
printf "Please paste the direct download URL here: " >&2
read -r url
fi

url=$(echo "$url" | xargs)

if [ -z "$url" ]; then
err "No download URL provided."
fi

local version
version=$(python3 - "$url" <<'PY'
import re, sys
from urllib.parse import unquote
url = unquote(sys.argv[1])
for pattern in (r'/antigravity-hub/([^/]+)/', r'/stable/([^/]+)/', r'/(\d+\.\d+\.\d+(?:-[^/]+)?)/'):
m = re.search(pattern, url)
if m:
print(m.group(1).split('-', 1)[0])
sys.exit(0)
print('unknown')
PY
)
curl -fsSL --compressed --retry 3 -o "$js" "$main_js_url"
printf '%s\n' "$js"

printf '%s %s\n' "$version" "$url"
}

resolve_download_from_bundle() {
local js="$1"
local product="$2"
python3 - "$js" "$AG_PLATFORM" "$product" <<'PY'

if [ "$product" = "ide" ] && [ -n "${ANTIGRAVITY_IDE_URL:-}" ]; then
local version
version=$(python3 - "$ANTIGRAVITY_IDE_URL" <<'PY'
import re, sys
from urllib.parse import unquote
url = unquote(sys.argv[1])
for pattern in (r'/antigravity-hub/([^/]+)/', r'/stable/([^/]+)/', r'/(\d+\.\d+\.\d+(?:-[^/]+)?)/'):
m = re.search(pattern, url)
if m:
print(m.group(1).split('-', 1)[0])
sys.exit(0)
print('unknown')
PY
)
printf '%s %s\n' "$version" "$ANTIGRAVITY_IDE_URL"
return 0
fi

if [ "$product" = "desktop" ] && [ -n "${ANTIGRAVITY_DESKTOP_URL:-}" ]; then
local version
version=$(python3 - "$ANTIGRAVITY_DESKTOP_URL" <<'PY'
import re, sys
from urllib.parse import unquote
url = unquote(sys.argv[1])
for pattern in (r'/antigravity-hub/([^/]+)/', r'/stable/([^/]+)/', r'/(\d+\.\d+\.\d+(?:-[^/]+)?)/'):
m = re.search(pattern, url)
if m:
print(m.group(1).split('-', 1)[0])
sys.exit(0)
print('unknown')
PY
)
printf '%s %s\n' "$version" "$ANTIGRAVITY_DESKTOP_URL"
return 0
fi

local result=""
if [ -f "$js" ] && [ -s "$js" ]; then
result=$(python3 - "$js" "$AG_PLATFORM" "$product" <<'PY'
import html, re, sys
from pathlib import Path
from urllib.parse import unquote
bundle = html.unescape(Path(sys.argv[1]).read_text(errors='replace'))

bundle_path = Path(sys.argv[1])
if not bundle_path.exists():
sys.exit(0)

bundle = html.unescape(bundle_path.read_text(errors='replace'))
platform = sys.argv[2]
product = sys.argv[3]

# Normalize escaped slashes sometimes found in JS string literals.
text = bundle.replace('\\/', '/')

def fail(msg):
raise SystemExit(msg)

def version_from_url(url):
decoded = unquote(url)
# Known current layouts include antigravity-hub/<version>/ and stable/<version>/.
for pattern in (r'/antigravity-hub/([^/]+)/', r'/stable/([^/]+)/', r'/(\d+\.\d+\.\d+(?:-[^/]+)?)/'):
m = re.search(pattern, decoded)
if m:
Expand All @@ -176,15 +291,11 @@ def version_from_url(url):
if product == 'desktop':
marker = 'id:"antigravity-2"'
next_marker = 'id:"antigravity-cli"'
filename_patterns = [r'Antigravity\.tar\.gz']
label = 'Antigravity 2.0'
filename_patterns = [r'Antigravity\.tar\.gz', r'Antigravity.*\.tar\.gz']
elif product == 'ide':
marker = 'id:"antigravity-ide"'
next_marker = 'id:"antigravity-sdk"'
filename_patterns = [r'Antigravity%20IDE\.tar\.gz', r'Antigravity\+IDE\.tar\.gz', r'Antigravity IDE\.tar\.gz']
label = 'Antigravity IDE'
else:
fail(f'Unknown product: {product}')
filename_patterns = [r'Antigravity%20IDE\.tar\.gz', r'Antigravity\+IDE\.tar\.gz', r'Antigravity IDE\.tar\.gz', r'Antigravity.*IDE.*\.tar\.gz']

sections = []
start = text.find(marker)
Expand All @@ -195,15 +306,38 @@ sections.append(text)

for section in sections:
for filename_re in filename_patterns:
pattern = r'https?://[^"\'\s<>)]*/' + re.escape(platform) + r'/' + filename_re
pattern = r'https?://[^"\'\s<>)]*/' + re.escape(platform) + r'/[^"\'\s<>)]*' + filename_re
matches = re.findall(pattern, section)
if matches:
url = matches[-1]
print(version_from_url(url), url)
sys.exit(0)

fail(f'Could not find official {label} tarball for {platform} in Google download bundle')
if product == 'ide':
broad_pattern = r'https?://[^\s"\'<>)]*?' + re.escape(platform) + r'[^\s"\'<>)]*?IDE[^\s"\'<>)]*?\.tar\.gz'
else:
broad_pattern = r'https?://[^\s"\'<>)]*?' + re.escape(platform) + r'[^\s"\'<>)]*?Antigravity(?![^\s"\'<>)]*IDE)[^\s"\'<>)]*?\.tar\.gz'

matches = re.findall(broad_pattern, text, re.IGNORECASE)
if not matches and product == 'desktop':
broad_pattern = r'https?://[^\s"\'<>)]*?' + re.escape(platform) + r'[^\s"\'<>)]*?\.tar\.gz'
all_matches = re.findall(broad_pattern, text, re.IGNORECASE)
matches = [u for u in all_matches if 'IDE' not in u]

if matches:
url = matches[-1]
print(version_from_url(url), url)
sys.exit(0)

PY
)
fi

if [ -z "$result" ]; then
result=$(prompt_manual_url "$product" "$AG_PLATFORM")
fi

printf '%s\n' "$result"
}

resolve_desktop_download() { resolve_download_from_bundle "$1" desktop; }
Expand Down Expand Up @@ -544,7 +678,34 @@ uninstall_all() {
log "Removed helper-managed Antigravity files. User settings under home directories were left untouched."
}

check_self_update() {
[ "$SKIP_SELF_UPDATE" -eq 1 ] && return 0

local remote_url="${INSTALLER_URL:-https://opensnap.github.io/antigravity/install.sh}"

local remote_script
remote_script=$(curl -fsSL -L -m 5 "$remote_url" 2>/dev/null) || return 0

local remote_version
remote_version=$(echo "$remote_script" | sed -n 's/^INSTALLER_VERSION=["'\''"]\([^"'\'']*\)["'\''"]/\1/p' | head -n 1)

if [ -n "$remote_version" ] && [ "$remote_version" != "$INSTALLER_VERSION" ]; then
log "A newer installer script version is available (local: v$INSTALLER_VERSION, remote: v$remote_version)."
log "Updating installer script from $remote_url..."

if [ -n "${BASH_SOURCE[0]:-}" ] && [ -w "${BASH_SOURCE[0]}" ]; then
printf '%s\n' "$remote_script" > "${BASH_SOURCE[0]}"
log "Installer script updated. Re-executing..."
exec bash "${BASH_SOURCE[0]}" "${ORIGINAL_ARGS[@]}" --no-self-update
else
exec bash -c "$remote_script" bash "${ORIGINAL_ARGS[@]}" --no-self-update
fi
fi
}

main() {
check_self_update

if [ "$DO_STATUS" -eq 1 ]; then
print_status
exit 0
Expand All @@ -564,7 +725,7 @@ main() {
mkdir -p "$tmp_parent"
local tmpdir
tmpdir=$(mktemp -d "$tmp_parent/$PROJECT_NAME.XXXXXX")
trap 'rm -rf "$tmpdir"' EXIT
trap 'rm -rf "${tmpdir:-}"' EXIT
local js
js=$(resolve_main_bundle "$tmpdir")
[ "$INSTALL_DESKTOP" -eq 1 ] && install_desktop_app "$tmpdir" "$js"
Expand Down