diff options
Diffstat (limited to 'coin/provisioning/common/unix/DownloadURL.sh')
| -rwxr-xr-x | coin/provisioning/common/unix/DownloadURL.sh | 50 |
1 files changed, 33 insertions, 17 deletions
diff --git a/coin/provisioning/common/unix/DownloadURL.sh b/coin/provisioning/common/unix/DownloadURL.sh index 0579451f..1d48a565 100755 --- a/coin/provisioning/common/unix/DownloadURL.sh +++ b/coin/provisioning/common/unix/DownloadURL.sh @@ -39,10 +39,12 @@ # based on the SHA length). Target filename should also be given. ############################ BOILERPLATE ############################### -command -v sha1sum >/dev/null || alias sha1sum='shasum -a 1' -command -v sha256sum >/dev/null || alias sha256sum='shasum -a 256' -command -v sha384sum >/dev/null || alias sha384sum='shasum -a 384' -command -v sha512sum >/dev/null || alias sha512sum='shasum -a 512' + +command -v sha1sum >/dev/null || sha1sum () { shasum -a 1 "$@" ; } +command -v sha256sum >/dev/null || sha256sum () { shasum -a 256 "$@" ; } +command -v sha384sum >/dev/null || sha384sum () { shasum -a 384 "$@" ; } +command -v sha512sum >/dev/null || sha512sum () { shasum -a 512 "$@" ; } + ######################################################################## @@ -89,22 +91,36 @@ DownloadURL () { url=$1 url2=$2 expectedHash=$3 - targetFile=$4 - - if VerifyHash "$targetFile" "$expectedHash" + # Optional argument $4: destination filename + if [ x"$4" = x ] then - echo "Skipping download, found and validated existing file: $targetFile" + # defaults to the last component of $url + targetFile=$(echo $url | sed 's|^.*/||') else - echo "Downloading from primary URL: $url" - if ! Download "$url" "$targetFile" + targetFile=$4 + fi + + # If a non-empty file already exists + if [ -s "$targetFile" ] + then + if VerifyHash "$targetFile" "$expectedHash" + then + echo "Skipping download, found and validated existing file: $targetFile" + return + else + echo "WARNING: Non-empty but different file found at destination; will re-download and overwrite file: $targetFile" + fi + fi + + echo "Downloading from primary URL: $url" + if ! Download "$url" "$targetFile" + then + echo "FAIL! to download, trying alternative URL: $url2" 1>&2 + if ! Download "$url2" "$targetFile" then - echo "FAIL! to download, trying alternative URL: $url2" 1>&2 - if ! Download "$url" "$targetFile" - then - echo 'FAIL! to download even from alternative url' 1>&2 - return 1 - fi + echo 'FAIL! to download even from alternative URL' 1>&2 + return 1 fi - VerifyHash "$targetFile" "$expectedHash" fi + VerifyHash "$targetFile" "$expectedHash" } |