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add basic S3-Compatible Object Storage support

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we have now an interface for filesystem backeds, this make easy to add
new filesystem backends
This commit is contained in:
Nicola Murino
2020-01-19 07:41:05 +01:00
parent 0b42dbc3c3
commit a4834f4a83
40 changed files with 2315 additions and 420 deletions
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22
sftpd/ssh_cmd.go
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@@ -21,12 +21,14 @@ import (
"github.com/drakkan/sftpgo/logger"
"github.com/drakkan/sftpgo/metrics"
"github.com/drakkan/sftpgo/utils"
"github.com/drakkan/sftpgo/vfs"
"golang.org/x/crypto/ssh"
)
var (
errQuotaExceeded = errors.New("denying write due to space limit")
errPermissionDenied = errors.New("Permission denied. You don't have the permissions to execute this command")
errQuotaExceeded = errors.New("denying write due to space limit")
errPermissionDenied = errors.New("Permission denied. You don't have the permissions to execute this command")
errUnsupportedConfig = errors.New("command unsupported for this configuration")
)
type sshCommand struct {
@@ -101,6 +103,9 @@ func (c *sshCommand) handle() error {
}
func (c *sshCommand) handleHashCommands() error {
if !vfs.IsLocalOsFs(c.connection.fs) {
return c.sendErrorResponse(errUnsupportedConfig)
}
var h hash.Hash
if c.command == "md5sum" {
h = md5.New()
@@ -125,14 +130,14 @@ func (c *sshCommand) handleHashCommands() error {
response = fmt.Sprintf("%x -\n", h.Sum(nil))
} else {
sshPath := c.getDestPath()
path, err := c.connection.buildPath(sshPath)
fsPath, err := c.connection.fs.ResolvePath(sshPath, c.connection.User.GetHomeDir())
if err != nil {
return c.sendErrorResponse(err)
}
if !c.connection.User.HasPerm(dataprovider.PermListItems, sshPath) {
return c.sendErrorResponse(errPermissionDenied)
}
hash, err := computeHashForFile(h, path)
hash, err := computeHashForFile(h, fsPath)
if err != nil {
return c.sendErrorResponse(err)
}
@@ -144,6 +149,9 @@ func (c *sshCommand) handleHashCommands() error {
}
func (c *sshCommand) executeSystemCommand(command systemCommand) error {
if !vfs.IsLocalOsFs(c.connection.fs) {
return c.sendErrorResponse(errUnsupportedConfig)
}
if c.connection.User.QuotaFiles > 0 && c.connection.User.UsedQuotaFiles > c.connection.User.QuotaFiles {
return c.sendErrorResponse(errQuotaExceeded)
}
@@ -288,7 +296,7 @@ func (c *sshCommand) getSystemCommand() (systemCommand, error) {
if len(c.args) > 0 {
var err error
sshPath := c.getDestPath()
path, err = c.connection.buildPath(sshPath)
path, err = c.connection.fs.ResolvePath(sshPath, c.connection.User.GetHomeDir())
if err != nil {
return command, err
}
@@ -331,7 +339,7 @@ func (c *sshCommand) rescanHomeDir() error {
var numFiles int
var size int64
if AddQuotaScan(c.connection.User.Username) {
numFiles, size, _, err = utils.ScanDirContents(c.connection.User.HomeDir)
numFiles, size, err = c.connection.fs.ScanDirContents(c.connection.User.HomeDir)
if err != nil {
c.connection.Log(logger.LevelWarn, logSenderSSH, "error scanning user home dir %#v: %v", c.connection.User.HomeDir, err)
} else {
@@ -389,7 +397,7 @@ func (c *sshCommand) sendExitStatus(err error) {
if err == nil && c.command != "scp" {
realPath := c.getDestPath()
if len(realPath) > 0 {
p, err := c.connection.buildPath(realPath)
p, err := c.connection.fs.ResolvePath(realPath, c.connection.User.GetHomeDir())
if err == nil {
realPath = p
}