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142 lines
3.2 KiB
142 lines
3.2 KiB
source $stdenv/setup |
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source $mirrorsFile |
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# Curl flags to handle redirects, not use EPSV, handle cookies for |
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# servers to need them during redirects, and work on SSL without a |
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# certificate (this isn't a security problem because we check the |
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# cryptographic hash of the output anyway). |
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curl="curl \ |
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--location --max-redirs 20 \ |
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--retry 3 \ |
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--disable-epsv \ |
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--cookie-jar cookies \ |
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--insecure \ |
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$curlOpts \ |
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$NIX_CURL_FLAGS" |
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downloadedFile="$out" |
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if [ -n "$downloadToTemp" ]; then downloadedFile="$TMPDIR/file"; fi |
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tryDownload() { |
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local url="$1" |
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echo |
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header "trying $url" |
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local curlexit=18; |
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success= |
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# if we get error code 18, resume partial download |
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while [ $curlexit -eq 18 ]; do |
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# keep this inside an if statement, since on failure it doesn't abort the script |
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if $curl -C - --fail "$url" --output "$downloadedFile"; then |
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success=1 |
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break |
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else |
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curlexit=$?; |
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fi |
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done |
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stopNest |
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} |
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finish() { |
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set +o noglob |
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if [[ $executable == "1" ]]; then |
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chmod +x $downloadedFile |
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fi |
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runHook postFetch |
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stopNest |
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exit 0 |
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} |
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tryHashedMirrors() { |
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if test -n "$NIX_HASHED_MIRRORS"; then |
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hashedMirrors="$NIX_HASHED_MIRRORS" |
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fi |
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for mirror in $hashedMirrors; do |
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url="$mirror/$outputHashAlgo/$outputHash" |
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if $curl --retry 0 --connect-timeout "${NIX_CONNECT_TIMEOUT:-15}" \ |
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--fail --silent --show-error --head "$url" \ |
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--write-out "%{http_code}" --output /dev/null > code 2> log; then |
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tryDownload "$url" |
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if test -n "$success"; then finish; fi |
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else |
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# Be quiet about 404 errors, which we interpret as the file |
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# not being present on this particular mirror. |
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if test "$(cat code)" != 404; then |
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echo "error checking the existence of $url:" |
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cat log |
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fi |
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fi |
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done |
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} |
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# URL list may contain ?. No glob expansion for that, please |
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set -o noglob |
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urls2= |
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for url in $urls; do |
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if test "${url:0:9}" != "mirror://"; then |
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urls2="$urls2 $url" |
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else |
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url2="${url:9}"; echo "${url2/\// }" > split; read site fileName < split |
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#varName="mirror_$site" |
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varName="$site" # !!! danger of name clash, fix this |
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if test -z "${!varName}"; then |
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echo "warning: unknown mirror:// site \`$site'" |
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else |
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mirrors=${!varName} |
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# Allow command-line override by setting NIX_MIRRORS_$site. |
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varName="NIX_MIRRORS_$site" |
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if test -n "${!varName}"; then mirrors="${!varName}"; fi |
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for url3 in $mirrors; do |
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urls2="$urls2 $url3$fileName"; |
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done |
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fi |
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fi |
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done |
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urls="$urls2" |
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# Restore globbing settings |
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set +o noglob |
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if test -n "$showURLs"; then |
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echo "$urls" > $out |
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exit 0 |
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fi |
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if test -n "$preferHashedMirrors"; then |
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tryHashedMirrors |
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fi |
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# URL list may contain ?. No glob expansion for that, please |
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set -o noglob |
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success= |
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for url in $urls; do |
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tryDownload "$url" |
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if test -n "$success"; then finish; fi |
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done |
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# Restore globbing settings |
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set +o noglob |
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if test -z "$preferHashedMirrors"; then |
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tryHashedMirrors |
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fi |
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echo "error: cannot download $name from any mirror" |
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exit 1
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