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s3: make scheme configurable

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This enables using for http for S3 request for debugging or
implementations that don't have https configured.  This is not a problem
for binary caches since they should not contain sensitive information.
Both package signatures and AWS auth already protect against tampering.
This commit is contained in:
Daiderd Jordan 2018-12-07 23:38:24 +01:00
parent 05f0543a17
commit 898823b67d
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GPG key ID: D02435D05B810C96
3 changed files with 11 additions and 7 deletions
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2
src/libstore/download.cc
View file

@ -622,7 +622,7 @@ struct CurlDownloader : public Downloader
// FIXME: do this on a worker thread
try {
#ifdef ENABLE_S3
S3Helper s3Helper("", Aws::Region::US_EAST_1, ""); // FIXME: make configurable
S3Helper s3Helper("", Aws::Region::US_EAST_1, "", ""); // FIXME: make configurable
auto slash = request.uri.find('/', 5);
if (slash == std::string::npos)
throw nix::Error("bad S3 URI '%s'", request.uri);

12
src/libstore/s3-binary-cache-store.cc
View file

@ -82,8 +82,8 @@ static void initAWS()
});
}
S3Helper::S3Helper(const std::string & profile, const std::string & region, const std::string & endpoint)
: config(makeConfig(region, endpoint))
S3Helper::S3Helper(const string & profile, const string & region, const string & scheme, const string & endpoint)
: config(makeConfig(region, scheme, endpoint))
, client(make_ref<Aws::S3::S3Client>(
profile == ""
? std::dynamic_pointer_cast<Aws::Auth::AWSCredentialsProvider>(
@ -114,11 +114,14 @@ class RetryStrategy : public Aws::Client::DefaultRetryStrategy
}
};
ref<Aws::Client::ClientConfiguration> S3Helper::makeConfig(const string & region, const string & endpoint)
ref<Aws::Client::ClientConfiguration> S3Helper::makeConfig(const string & region, const string & scheme, const string & endpoint)
{
initAWS();
auto res = make_ref<Aws::Client::ClientConfiguration>();
res->region = region;
if (!scheme.empty()) {
res->scheme = Aws::Http::SchemeMapper::FromString(scheme.c_str());
}
if (!endpoint.empty()) {
res->endpointOverride = endpoint;
}
@ -169,6 +172,7 @@ struct S3BinaryCacheStoreImpl : public S3BinaryCacheStore
{
const Setting<std::string> profile{this, "", "profile", "The name of the AWS configuration profile to use."};
const Setting<std::string> region{this, Aws::Region::US_EAST_1, "region", {"aws-region"}};
const Setting<std::string> scheme{this, "", "scheme", "The scheme to use for S3 requests, https by default."};
const Setting<std::string> endpoint{this, "", "endpoint", "An optional override of the endpoint to use when talking to S3."};
const Setting<std::string> narinfoCompression{this, "", "narinfo-compression", "compression method for .narinfo files"};
const Setting<std::string> lsCompression{this, "", "ls-compression", "compression method for .ls files"};
@ -188,7 +192,7 @@ struct S3BinaryCacheStoreImpl : public S3BinaryCacheStore
const Params & params, const std::string & bucketName)
: S3BinaryCacheStore(params)
, bucketName(bucketName)
, s3Helper(profile, region, endpoint)
, s3Helper(profile, region, scheme, endpoint)
{
diskCache = getNarInfoDiskCache();
}

4
src/libstore/s3.hh
View file

@ -14,9 +14,9 @@ struct S3Helper
ref<Aws::Client::ClientConfiguration> config;
ref<Aws::S3::S3Client> client;
S3Helper(const std::string & profile, const std::string & region, const std::string & endpoint);
S3Helper(const std::string & profile, const std::string & region, const std::string & scheme, const std::string & endpoint);
ref<Aws::Client::ClientConfiguration> makeConfig(const std::string & region, const std::string & endpoint);
ref<Aws::Client::ClientConfiguration> makeConfig(const std::string & region, const std::string & scheme, const std::string & endpoint);
struct DownloadResult
{