mirror of
https://github.com/BishopFox/sliver
synced 2026-06-08 10:29:05 +00:00
Raf
125 lines
3.2 KiB
Go
125 lines
3.2 KiB
Go
package filesystem
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/*
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Sliver Implant Framework
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Copyright (C) 2023 Bishop Fox
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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import (
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"context"
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"fmt"
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"github.com/bishopfox/sliver/client/console"
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"github.com/bishopfox/sliver/protobuf/clientpb"
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"github.com/bishopfox/sliver/protobuf/sliverpb"
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"github.com/spf13/cobra"
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"google.golang.org/protobuf/proto"
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)
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func HeadCmd(cmd *cobra.Command, con *console.SliverClient, args []string, head bool) {
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session, beacon := con.ActiveTarget.GetInteractive()
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if session == nil && beacon == nil {
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return
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}
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var filePath string
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var fetchBytes bool
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var fetchSize int64
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var operationName string
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var download *sliverpb.Download
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var err error
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if len(args) > 0 {
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filePath = args[0]
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}
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if filePath == "" {
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con.PrintErrorf("Missing parameter: file name\n")
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return
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}
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if cmd.Flags().Changed("bytes") {
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fetchBytes = true
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fetchSize, _ = cmd.Flags().GetInt64("bytes")
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if fetchSize < 0 {
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// Cannot fetch a negative number of bytes
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con.PrintErrorf("The number of bytes specified must be positive.")
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return
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}
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if fetchSize == 1 {
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operationName = "byte"
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} else {
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operationName = "bytes"
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}
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} else {
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fetchBytes = false
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fetchSize, _ = cmd.Flags().GetInt64("lines")
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if fetchSize < 0 {
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// Cannot fetch a negative number of lines
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con.PrintErrorf("The number of lines specified must be positive.")
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return
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}
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if fetchSize == 1 {
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operationName = "line"
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} else {
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operationName = "lines"
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}
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}
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ctrl := make(chan bool)
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con.SpinUntil(fmt.Sprintf("Retrieving %d %s from %s ...", fetchSize, operationName, filePath), ctrl)
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// A tail is a negative head
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if !head {
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fetchSize *= -1
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}
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if fetchBytes {
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download, err = con.Rpc.Download(context.Background(), &sliverpb.DownloadReq{
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Request: con.ActiveTarget.Request(cmd),
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Path: filePath,
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MaxBytes: fetchSize,
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RestrictedToFile: true,
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})
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} else {
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download, err = con.Rpc.Download(context.Background(), &sliverpb.DownloadReq{
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Request: con.ActiveTarget.Request(cmd),
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Path: filePath,
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MaxLines: fetchSize,
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RestrictedToFile: true,
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})
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}
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ctrl <- true
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<-ctrl
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if err != nil {
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con.PrintErrorf("%s\n", err)
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return
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}
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if download.Response != nil && download.Response.Async {
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con.AddBeaconCallback(download.Response.TaskID, func(task *clientpb.BeaconTask) {
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err = proto.Unmarshal(task.Response, download)
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if err != nil {
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con.PrintErrorf("Failed to decode response %s\n", err)
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return
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}
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PrintCat(filePath, download, cmd, con)
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})
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con.PrintAsyncResponse(download.Response)
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} else {
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PrintCat(filePath, download, cmd, con)
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}
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}
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