49 lines
1.4 KiB
Bash
Executable File
49 lines
1.4 KiB
Bash
Executable File
termux_download() {
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if [ $# != 3 ]; then
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termux_error_exit "termux_download(): Invalid arguments - expected \$URL \$DESTINATION \$CHECKSUM"
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fi
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local URL="$1"
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local DESTINATION="$2"
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local CHECKSUM="$3"
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if [ -f "$DESTINATION" ] && [ "$CHECKSUM" != "SKIP_CHECKSUM" ]; then
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# Keep existing file if checksum matches.
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local EXISTING_CHECKSUM
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EXISTING_CHECKSUM=$(sha256sum "$DESTINATION" | cut -f 1 -d ' ')
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if [ "$EXISTING_CHECKSUM" = "$CHECKSUM" ]; then return; fi
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fi
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local TMPFILE
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TMPFILE=$(mktemp "$TERMUX_PKG_TMPDIR/download.$TERMUX_PKG_NAME.XXXXXXXXX")
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echo "Downloading ${URL}"
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local TRYMAX=6
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for try in $(seq 1 $TRYMAX); do
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if curl -L --fail --retry 2 -o "$TMPFILE" "$URL"; then
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local ACTUAL_CHECKSUM
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ACTUAL_CHECKSUM=$(sha256sum "$TMPFILE" | cut -f 1 -d ' ')
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if [ "$CHECKSUM" != "SKIP_CHECKSUM" ]; then
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if [ "$CHECKSUM" != "$ACTUAL_CHECKSUM" ]; then
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>&2 printf "Wrong checksum for %s:\nExpected: %s\nActual: %s\n" \
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"$URL" "$CHECKSUM" "$ACTUAL_CHECKSUM"
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exit 1
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fi
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else
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printf "WARNING: No checksum check for %s:\nActual: %s\n" \
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"$URL" "$ACTUAL_CHECKSUM"
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fi
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mv "$TMPFILE" "$DESTINATION"
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return
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else
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echo "Download of $URL failed (attempt $try/$TRYMAX)" 1>&2
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sleep 45
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fi
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done
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termux_error_exit "Failed to download $URL"
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}
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# Make script standalone executable as well as sourceable
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if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
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termux_download "$@"
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fi
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