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# Maintainer: Danilo Pianini <danilo.pianini@gmail.com>
pkgname=pantum-cp2100-cm2100-driver
pkgver="1.0.39"
pkgrel="1"
pkgdesc="Linux driver for Pantum CP2100 and CM2100 printers V$pkgver"
arch=('x86_64' 'i386' 'i686')
url="https://global.pantum.com/support/download/driver/"
license=('proprietary')
makedepends=('python' 'curl' 'unzip' 'binutils' 'zstd')
depends=('cups' 'cups-filters' 'ghostscript')
sha256sums=()
source=()
# Convert pkgver "1.0.39" -> "V1_0_39" for upstream ZIP filename
_pkgver_upstream="V${pkgver//./_}"
_zipfile="Pantum_CP2100_CM2100_LinuxDriver%20${_pkgver_upstream}.zip"
_url="https://drivers.pantum.com/userfiles/files/download/drive/CM2100/${_zipfile}"
# Extracts the data payload of a .deb into a target directory.
# Usage: extract_deb <deb-file> <dest-dir>
extract_deb() {
local deb="$1" dest="$2"
[[ -f "$deb" ]] || { echo "extract_deb: missing deb: $deb"; return 1; }
[[ -n "$dest" ]] || { echo "extract_deb: missing destination"; return 1; }
mkdir -p "$dest"
# Find the data tarball inside the .deb (supports xz/gz/bz2/zst/none)
local data_member
data_member="$(ar t "$deb" | grep -E '^data\.tar\.(xz|gz|bz2|zst)?$' | head -n1)"
[[ -n "$data_member" ]] || { echo "extract_deb: no data.tar.* in $deb"; return 1; }
echo ">> Extracting $data_member from $deb to $dest"
case "$data_member" in
*.xz) ar p "$deb" "$data_member" | tar -xJpf - -C "$dest" ;;
*.gz) ar p "$deb" "$data_member" | tar -xzpf - -C "$dest" ;;
*.bz2) ar p "$deb" "$data_member" | tar -xjpf - -C "$dest" ;;
*.zst) ar p "$deb" "$data_member" | tar --zstd -xpf - -C "$dest" ;;
*tar) ar p "$deb" "$data_member" | tar -xpf - -C "$dest" ;;
*) echo "extract_deb: unknown data member: $data_member"; return 1 ;;
esac
}
# Map Arch Linux $CARCH to Debian .deb architecture
to_deb_arch() {
case "$1" in
x86_64) echo "amd64" ;;
i686) echo "i386" ;;
*) echo "$1" ;;
esac
}
build() {
cd "$srcdir"/*LinuxDriver*/Resources
local _debarch
_debarch="$(to_deb_arch "$CARCH")"
local deb
deb="$(printf '%s\n' pantum2100_${pkgver}-*_${_debarch}.deb | head -n1)"
[[ -f "$deb" ]] || { echo "No deb found for arch $_debarch"; ls -la; return 1; }
_debout="$srcdir/debroot-${pkgver}-${_debarch}"
rm -rf "$_debout"
extract_deb "$deb" "$_debout"
}
package() {
local _debarch
_debarch="$(to_deb_arch "$CARCH")"
_debout="$srcdir/debroot-${pkgver}-${_debarch}"
[[ -d "$_debout" ]] || { echo "package(): missing extracted dir: $_debout"; return 1; }
echo ">> Installing files into \$pkgdir"
mkdir -p "$pkgdir"
cp -a --no-preserve=ownership "$_debout"/. "$pkgdir"/
}
prepare() {
cd "$srcdir"
out="Pantum_CP2100_CM2100_LinuxDriver_${pkgver}.zip"
part="$out.part"
echo ">> Fetch 1: download (could be real ZIP or HTML stub)"
# Add a referer and accept header; some anti-bot setups check these
curl -fsSL --compressed \
-A 'Mozilla/5.0' \
-H 'Accept: */*' \
-e 'https://global.pantum.com/support/download/driver/' \
-o "$part" "$_url" || { echo "Download failed"; exit 1; }
# If it’s already a ZIP, we’re done.
if unzip -tq "$part" >/dev/null 2>&1; then
echo ">> Got a valid ZIP directly."
mv -f "$part" "$out"
else
mime="$(file -b "$part" 2>/dev/null || true)"
# Case A: gzipped HTML stub
if echo "$mime" | grep -qi 'gzip compressed'; then
echo ">> Detected gzipped HTML stub, inflating..."
html="$(zcat -- "$part")"
rm -f "$part"
# Case B: plain HTML stub
elif echo "$mime" | grep -qi 'html'; then
echo ">> Detected plain HTML stub."
html="$(cat -- "$part")"
rm -f "$part"
# Case C: ZIP that contains one HTML file (rare)
elif unzip -tq "$part" >/dev/null 2>&1; then
entries="$(unzip -Z1 "$part" 2>/dev/null || true)"
if [[ "$(printf '%s\n' "$entries" | wc -l)" -eq 1 ]]; then
stubfile="$(printf '%s\n' "$entries")"
if unzip -p "$part" "$stubfile" | head -c 15 | grep -q '^<html>'; then
echo ">> Detected stub inside single-file ZIP; extracting HTML..."
html="$(unzip -p "$part" "$stubfile")"
rm -f "$part"
fi
fi
fi
# We must have HTML by now
if [[ -z "${html:-}" ]]; then
echo ">> Unexpected content (not ZIP, not HTML):"
file "$part" || true
head -c 200 "$part" || true
exit 1
fi
echo ">> Extracting arg1 from HTML..."
arg1="$(python - <<'PY'
import re, sys
data = sys.stdin.read()
m = re.search(r"var\s+arg1\s*=\s*'([0-9A-F]+)'", data)
print(m.group(1) if m else "")
PY
<<< "$html")"
if [[ -z "$arg1" ]]; then
echo "Failed to extract arg1 from stub."
printf '%s\n' "$html" | head -n 60
exit 1
fi
echo ">> Computing acw_sc__v2 cookie..."
cookie_val="$(python - "$arg1" <<'PY'
import sys
arg1 = sys.argv[1].strip()
pos = [0xf,0x23,0x1d,0x18,0x21,0x10,0x1,0x26,0xa,0x9,0x13,0x1f,0x28,0x1b,0x16,0x17,0x19,0xd,0x6,0xb,0x27,0x12,0x14,0x8,0xe,0x15,0x20,0x1a,0x2,0x1e,0x7,0x4,0x11,0x5,0x3,0x1c,0x22,0x25,0xc,0x24]
mask = "3000176000856006061501533003690027800375"
out = ['']*len(pos)
for i, ch in enumerate(arg1):
for j, p in enumerate(pos):
if p == i+1:
out[j] = ch
break
arg2 = ''.join(out)
n = min(len(arg2), len(mask))
res = []
for i in range(0, n, 2):
a = int(arg2[i:i+2], 16)
m = int(mask[i:i+2], 16)
res.append(f"{a ^ m:02x}")
print(''.join(res))
PY
)"
[[ -n "$cookie_val" ]] || { echo "Failed to compute cookie"; exit 1; }
echo ">> Fetch 2: download real ZIP with cookie..."
curl -fsSL --compressed \
-A 'Mozilla/5.0' \
-H "Cookie: acw_sc__v2=${cookie_val}" \
-H 'Accept: application/zip,*/*' \
-e 'https://global.pantum.com/support/download/driver/' \
-o "$out" "$_url" || { echo "Second download failed"; exit 1; }
fi
echo ">> Validating final ZIP..."
unzip -tq "$out" >/dev/null 2>&1 || { echo "Final ZIP invalid"; file "$out"; exit 1; }
echo ">> Unpacking ZIP so build() can find Resources/..."
bsdtar -xf "$out"
}
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