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Error: Permission denied while uploading a file to a server

See original GitHub issue

Hi,

I have a script that upload a file to an sftp server. It was working with ssh2-streams@0.1.11 but it stopped working with ssh2-streams@0.1.15.

This is the error:

events.js:141
      throw er; // Unhandled 'error' event
      ^

Error: Permission denied
    at SFTPStream._transform (/Users/luca.a.mugnaini/am/node_modules/ssh2/node_modules/ssh2-streams/lib/sftp.js:405:27)
    at SFTPStream.Transform._read (_stream_transform.js:167:10)
    at SFTPStream._read (/Users/luca.a.mugnaini/am/node_modules/ssh2/node_modules/ssh2-streams/lib/sftp.js:181:15)
    at SFTPStream.Transform._write (_stream_transform.js:155:12)
    at doWrite (_stream_writable.js:300:12)
    at writeOrBuffer (_stream_writable.js:286:5)
    at SFTPStream.Writable.write (_stream_writable.js:214:11)
    at Channel.ondata (_stream_readable.js:542:20)
    at emitOne (events.js:77:13)
    at Channel.emit (events.js:169:7)

I use a Mac with node v4.6.0 but I verified that the same problem occur also on Windows.

Let me know if there is any other info that I can provide.

This is the debug log:

DEBUG: Local ident: 'SSH-2.0-ssh2js0.1.15'
DEBUG: Client: Trying xxxxxxx ...
DEBUG: Client: Connected
DEBUG: Parser: IN_INIT
DEBUG: Parser: IN_GREETING
DEBUG: Parser: IN_HEADER
DEBUG: Remote ident: 'SSH-2.0-mod_sftp/0.9.8'
DEBUG: Outgoing: Writing KEXINIT
DEBUG: Parser: IN_PACKETBEFORE (expecting 8)
DEBUG: Parser: IN_PACKET
DEBUG: Parser: pktLen:636,padLen:9,remainLen:632
DEBUG: Parser: IN_PACKETDATA
DEBUG: Parser: IN_PACKETDATAAFTER, packet: KEXINIT
DEBUG: Comparing KEXINITs ...
DEBUG: (local) KEX algorithms: ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha1
DEBUG: (remote) KEX algorithms: diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1,rsa1024-sha1
DEBUG: KEX algorithm: diffie-hellman-group-exchange-sha256
DEBUG: (local) Host key formats: ssh-rsa
DEBUG: (remote) Host key formats: ssh-rsa,ssh-dss
DEBUG: Host key format: ssh-rsa
DEBUG: (local) Client->Server ciphers: aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm,aes128-gcm@openssh.com,aes256-gcm,aes256-gcm@openssh.com
DEBUG: (remote) Client->Server ciphers: aes256-ctr,aes192-ctr,aes128-ctr,aes256-cbc,aes192-cbc,aes128-cbc,blowfish-ctr,blowfish-cbc,cast128-cbc,arcfour256,arcfour128,3des-ctr,3des-cbc
DEBUG: Client->Server Cipher: aes128-ctr
DEBUG: (local) Server->Client ciphers: aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm,aes128-gcm@openssh.com,aes256-gcm,aes256-gcm@openssh.com
DEBUG: (remote) Server->Client ciphers: aes256-ctr,aes192-ctr,aes128-ctr,aes256-cbc,aes192-cbc,aes128-cbc,blowfish-ctr,blowfish-cbc,cast128-cbc,arcfour256,arcfour128,3des-ctr,3des-cbc
DEBUG: Server->Client Cipher: aes128-ctr
DEBUG: (local) Client->Server HMAC algorithms: hmac-sha2-256,hmac-sha2-512,hmac-sha1
DEBUG: (remote) Client->Server HMAC algorithms: hmac-sha1,hmac-sha1-96,hmac-md5,hmac-md5-96,hmac-ripemd160
DEBUG: Client->Server HMAC algorithm: hmac-sha1
DEBUG: (local) Server->Client HMAC algorithms: hmac-sha2-256,hmac-sha2-512,hmac-sha1
DEBUG: (remote) Server->Client HMAC algorithms: hmac-sha1,hmac-sha1-96,hmac-md5,hmac-md5-96,hmac-ripemd160
DEBUG: Server->Client HMAC algorithm: hmac-sha1
DEBUG: (local) Client->Server compression algorithms: none,zlib@openssh.com,zlib
DEBUG: (remote) Client->Server compression algorithms: none
DEBUG: Client->Server compression algorithm: none
DEBUG: (local) Server->Client compression algorithms: none,zlib@openssh.com,zlib
DEBUG: (remote) Server->Client compression algorithms: none
DEBUG: Server->Client compression algorithm: none
DEBUG: Outgoing: Writing KEXDH_GEX_REQUEST
DEBUG: Parser: IN_PACKETBEFORE (expecting 8)
DEBUG: Parser: IN_PACKET
DEBUG: Parser: pktLen:276,padLen:8,remainLen:272
DEBUG: Parser: IN_PACKETDATA
DEBUG: Parser: IN_PACKETDATAAFTER, packet: KEXDH_GEX_GROUP
DEBUG: Outgoing: Writing KEXDH_GEX_INIT
DEBUG: Parser: IN_PACKETBEFORE (expecting 8)
DEBUG: Parser: IN_PACKET
DEBUG: Parser: pktLen:828,padLen:10,remainLen:824
DEBUG: Parser: IN_PACKETDATA
DEBUG: Parser: IN_PACKETDATAAFTER, packet: KEXDH_GEX_REPLY
DEBUG: Checking host key format
DEBUG: Checking signature format
DEBUG: Verifying host fingerprint
DEBUG: Host accepted by default (no verification)
DEBUG: Verifying signature
DEBUG: Outgoing: Writing NEWKEYS
DEBUG: Parser: IN_PACKETBEFORE (expecting 8)
DEBUG: Parser: IN_PACKET
DEBUG: Parser: pktLen:12,padLen:10,remainLen:8
DEBUG: Parser: IN_PACKETDATA
DEBUG: Parser: IN_PACKETDATAAFTER, packet: NEWKEYS
DEBUG: Outgoing: Writing SERVICE_REQUEST (ssh-userauth)
DEBUG: Parser: IN_PACKETBEFORE (expecting 16)
DEBUG: Parser: IN_PACKET
DEBUG: Parser: Decrypting
DEBUG: Parser: pktLen:28,padLen:10,remainLen:16
DEBUG: Parser: IN_PACKETDATA
DEBUG: Parser: Decrypting
DEBUG: Parser: HMAC size:20
DEBUG: Parser: IN_PACKETDATAVERIFY
DEBUG: Parser: Verifying MAC
DEBUG: Parser: IN_PACKETDATAVERIFY (Valid HMAC)
DEBUG: Parser: IN_PACKETDATAAFTER, packet: SERVICE_ACCEPT
DEBUG: Outgoing: Writing USERAUTH_REQUEST (password)
DEBUG: Parser: IN_PACKETBEFORE (expecting 16)
DEBUG: Parser: IN_PACKET
DEBUG: Parser: Decrypting
DEBUG: Parser: pktLen:12,padLen:10,remainLen:0
DEBUG: Parser: IN_PACKETDATA
DEBUG: Parser: HMAC size:20
DEBUG: Parser: IN_PACKETDATAVERIFY
DEBUG: Parser: Verifying MAC
DEBUG: Parser: IN_PACKETDATAVERIFY (Valid HMAC)
DEBUG: Parser: IN_PACKETDATAAFTER, packet: USERAUTH_SUCCESS
DEBUG: Outgoing: Writing CHANNEL_OPEN (0, session)
DEBUG: Parser: IN_PACKETBEFORE (expecting 16)
DEBUG: Parser: IN_PACKET
DEBUG: Parser: Decrypting
DEBUG: Parser: pktLen:28,padLen:10,remainLen:16
DEBUG: Parser: IN_PACKETDATA
DEBUG: Parser: Decrypting
DEBUG: Parser: HMAC size:20
DEBUG: Parser: IN_PACKETDATAVERIFY
DEBUG: Parser: Verifying MAC
DEBUG: Parser: IN_PACKETDATAVERIFY (Valid HMAC)
DEBUG: Parser: IN_PACKETDATAAFTER, packet: CHANNEL_OPEN_CONFIRMATION
DEBUG: Outgoing: Writing CHANNEL_REQUEST (0, subsystem: sftp)
DEBUG: Parser: IN_PACKETBEFORE (expecting 16)
DEBUG: Parser: IN_PACKET
DEBUG: Parser: Decrypting
DEBUG: Parser: pktLen:12,padLen:6,remainLen:0
DEBUG: Parser: IN_PACKETDATA
DEBUG: Parser: HMAC size:20
DEBUG: Parser: IN_PACKETDATAVERIFY
DEBUG: Parser: Verifying MAC
DEBUG: Parser: IN_PACKETDATAVERIFY (Valid HMAC)
DEBUG: Parser: IN_PACKETDATAAFTER, packet: CHANNEL_SUCCESS (0)
DEBUG: Parser: IN_PACKETBEFORE (expecting 16)
DEBUG: Outgoing: Writing CHANNEL_DATA (0)
DEBUG: Parser: IN_PACKET
DEBUG: Parser: Decrypting
DEBUG: Parser: pktLen:140,padLen:12,remainLen:128
DEBUG: Parser: IN_PACKETDATA
DEBUG: Parser: Decrypting
DEBUG: Parser: HMAC size:20
DEBUG: Parser: IN_PACKETDATAVERIFY
DEBUG: Parser: Verifying MAC
DEBUG: Parser: IN_PACKETDATAVERIFY (Valid HMAC)
DEBUG: Parser: IN_PACKETDATAAFTER, packet: CHANNEL_DATA (0)
DEBUG[SFTP]: Outgoing: Writing OPEN
DEBUG: Outgoing: Writing CHANNEL_DATA (0)
DEBUG: Parser: IN_PACKETBEFORE (expecting 16)
DEBUG: Parser: IN_PACKET
DEBUG: Parser: Decrypting
DEBUG: Parser: pktLen:60,padLen:7,remainLen:48
DEBUG: Parser: IN_PACKETDATA
DEBUG: Parser: Decrypting
DEBUG: Parser: HMAC size:20
DEBUG: Parser: IN_PACKETDATAVERIFY
DEBUG: Parser: Verifying MAC
DEBUG: Parser: IN_PACKETDATAVERIFY (Valid HMAC)
DEBUG: Parser: IN_PACKETDATAAFTER, packet: CHANNEL_DATA (0)
DEBUG[SFTP]: Parser: Response: STATUS

Issue Analytics

  • State:closed
  • Created 7 years ago
  • Comments:7 (3 by maintainers)

github_iconTop GitHub Comments

1reaction
mofuxcommented, Nov 14, 2016

You are seeing this exception because the remote sftp server does not allow you create a file in the specified location (permission denied). I assume any other sftp client would have the same problem when used with the same identity information. The reason this error is thrown is because you have not attached an error event handler, and the default behaviour is to throw the error if it was not catched using the error handler.

0reactions
mscdexcommented, Nov 15, 2016

Glad to hear it’s working for you now.

One little tip: if you ever enable strict mode for your code, you will need to use the newer octal representation (e.g. 0o664). This newer representation will work in ‘sloppy mode’ too.

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