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package http
import (
"context"
"errors"
"io"
"net/url"
"github.com/aptly-dev/aptly/utils"
. "gopkg.in/check.v1"
)
type CompressionSuite struct {
baseURL *url.URL
ctx context.Context
}
var _ = Suite(&CompressionSuite{})
const (
bzipData = "BZh91AY&SY\xcc\xc3q\xd4\x00\x00\x02A\x80\x00\x10\x02\x00\x0c\x00 \x00!\x9ah3M\x19\x97\x8b\xb9\"\x9c(Hfa\xb8\xea\x00"
gzipData = "\x1f\x8b\x08\x00\xc8j\xb0R\x00\x03+I-.\xe1\x02\x00\xc65\xb9;\x05\x00\x00\x00"
xzData = "\xfd\x37\x7a\x58\x5a\x00\x00\x04\xe6\xd6\xb4\x46\x02\x00\x21\x01\x16\x00\x00\x00\x74\x2f\xe5\xa3\x01\x00\x04\x74\x65\x73\x74\x0a\x00\x00\x00\x00\x9d\xed\x31\x1d\x0f\x9f\xd7\xe6\x00\x01\x1d\x05\xb8\x2d\x80\xaf\x1f\xb6\xf3\x7d\x01\x00\x00\x00\x00\x04\x59\x5a"
rawData = "test"
)
func (s *CompressionSuite) SetUpTest(c *C) {
s.baseURL, _ = url.Parse("http://example.com/")
s.ctx = context.Background()
}
func (s *CompressionSuite) TestDownloadTryCompression(c *C) {
var buf []byte
expectedChecksums := map[string]utils.ChecksumInfo{
"file.bz2": {Size: int64(len(bzipData))},
"file.gz": {Size: int64(len(gzipData))},
"file.xz": {Size: int64(len(xzData))},
"file": {Size: int64(len(rawData))},
}
// bzip2 only available
buf = make([]byte, 4)
d := NewFakeDownloader()
d.ExpectResponse("http://example.com/file.bz2", bzipData)
r, file, err := DownloadTryCompression(s.ctx, d, s.baseURL, "file", expectedChecksums, false)
c.Assert(err, IsNil)
defer func() {
_ = file.Close()
}()
_, _ = io.ReadFull(r, buf)
c.Assert(string(buf), Equals, rawData)
c.Assert(d.Empty(), Equals, true)
// bzip2 not available, but gz is
buf = make([]byte, 4)
d = NewFakeDownloader()
d.ExpectError("http://example.com/file.bz2", &Error{Code: 404})
d.ExpectResponse("http://example.com/file.gz", gzipData)
r, file, err = DownloadTryCompression(s.ctx, d, s.baseURL, "file", expectedChecksums, false)
c.Assert(err, IsNil)
defer func() {
_ = file.Close()
}()
_, _ = io.ReadFull(r, buf)
c.Assert(string(buf), Equals, rawData)
c.Assert(d.Empty(), Equals, true)
// bzip2 & gzip not available, but xz is
buf = make([]byte, 4)
d = NewFakeDownloader()
d.ExpectError("http://example.com/file.bz2", &Error{Code: 404})
d.ExpectError("http://example.com/file.gz", &Error{Code: 404})
d.ExpectResponse("http://example.com/file.xz", xzData)
r, file, err = DownloadTryCompression(s.ctx, d, s.baseURL, "file", expectedChecksums, false)
c.Assert(err, IsNil)
defer func() {
_ = file.Close()
}()
_, _ = io.ReadFull(r, buf)
c.Assert(string(buf), Equals, rawData)
c.Assert(d.Empty(), Equals, true)
// bzip2, gzip & xz not available, but raw is
buf = make([]byte, 4)
d = NewFakeDownloader()
d.ExpectError("http://example.com/file.bz2", &Error{Code: 404})
d.ExpectError("http://example.com/file.gz", &Error{Code: 404})
d.ExpectError("http://example.com/file.xz", &Error{Code: 404})
d.ExpectResponse("http://example.com/file", rawData)
r, file, err = DownloadTryCompression(s.ctx, d, s.baseURL, "file", expectedChecksums, false)
c.Assert(err, IsNil)
defer func() {
_ = file.Close()
}()
_, _ = io.ReadFull(r, buf)
c.Assert(string(buf), Equals, rawData)
c.Assert(d.Empty(), Equals, true)
// gzip available, but broken
d = NewFakeDownloader()
d.ExpectError("http://example.com/file.bz2", &Error{Code: 404})
d.ExpectResponse("http://example.com/file.gz", "x")
_, _, err = DownloadTryCompression(s.ctx, d, s.baseURL, "file", nil, true)
c.Assert(err, ErrorMatches, "unexpected EOF")
c.Assert(d.Empty(), Equals, true)
}
func (s *CompressionSuite) TestDownloadTryCompressionLongestSuffix(c *C) {
var buf []byte
expectedChecksums := map[string]utils.ChecksumInfo{
"file.bz2": {Size: 1},
"subdir/file.bz2": {Size: int64(len(bzipData))},
"otherdir/file.bz2": {Size: 1},
}
// longest suffix should be picked up
buf = make([]byte, 4)
d := NewFakeDownloader()
d.ExpectResponse("http://example.com/subdir/file.bz2", bzipData)
r, file, err := DownloadTryCompression(s.ctx, d, s.baseURL, "subdir/file", expectedChecksums, false)
c.Assert(err, IsNil)
defer func() {
_ = file.Close()
}()
_, _ = io.ReadFull(r, buf)
c.Assert(string(buf), Equals, rawData)
c.Assert(d.Empty(), Equals, true)
}
func (s *CompressionSuite) TestDownloadTryCompressionErrors(c *C) {
d := NewFakeDownloader()
_, _, err := DownloadTryCompression(s.ctx, d, s.baseURL, "file", nil, true)
c.Assert(err, ErrorMatches, "unexpected request.*")
d = NewFakeDownloader()
d.ExpectError("http://example.com/file.bz2", &Error{Code: 404})
d.ExpectError("http://example.com/file.gz", &Error{Code: 404})
d.ExpectError("http://example.com/file.xz", &Error{Code: 404})
d.ExpectError("http://example.com/file", errors.New("403"))
_, _, err = DownloadTryCompression(s.ctx, d, s.baseURL, "file", nil, true)
c.Assert(err, ErrorMatches, "403")
d = NewFakeDownloader()
d.ExpectError("http://example.com/file.bz2", &Error{Code: 404})
d.ExpectError("http://example.com/file.gz", &Error{Code: 404})
d.ExpectError("http://example.com/file.xz", &Error{Code: 404})
d.ExpectResponse("http://example.com/file", rawData)
expectedChecksums := map[string]utils.ChecksumInfo{
"file.bz2": {Size: 7},
"file.gz": {Size: 7},
"file.xz": {Size: 7},
"file": {Size: 7},
}
_, _, err = DownloadTryCompression(s.ctx, d, s.baseURL, "file", expectedChecksums, false)
c.Assert(err, ErrorMatches, "checksums don't match.*")
}
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