XPost: misc.phone.mobile.iphone, comp.mobile.android

On 2025-04-25 13:21, Carlos E.R. wrote:

On 2025-04-25 10:37, Herbert Kleebauer wrote:

On 25.04.2025 02:09, Carlos E.R. wrote:

On 2025-04-25 00:01, Herbert Kleebauer wrote:

https://f-droid.org/packages/org.primftpd/

...

I try again on my main phone. First I install it (I had uninstalled it).
Run it, go to configure, it says "create keys?", I say yes (I did not
see this prompt yesterday). I configure user name and password, go to
main screen, hit run, it does not die and both ftp and sftp are active.
AND, I successfully connect using both sftp and ftp.

If we have "sftp", maybe we can use "sshfs", which would allow a mount, and thus do rsync. It connects, but permissions are too restrictive.

cer@Telcontar:~/tmp> sshfs -p 1234 cer@192.168.2.18:/ /home/cer/fusermount/ (cer@192.168.2.18) Password:
cer@Telcontar:~/tmp> ls ~/fusermount/
storage
cer@Telcontar:~/tmp> ls ~/fusermount/storage/
ls: reading directory '/home/cer/fusermount/storage/': Permission denied cer@Telcontar:~/tmp> ls ~/fusermount/
storage
cer@Telcontar:~/tmp> l ~/fusermount/
total 0
d--x--x--x 1 bin bin 0 Nov 3 1971 storage/
cer@Telcontar:~/tmp> l ~/fusermount/
total 0
d--x--x--x 1 bin bin 0 Nov 3 1971 storage/
cer@Telcontar:~/tmp>

We need 'rx' permissions to traverse the directory tree.

The problem is the same with sftp:


cer@Telcontar:~/tmp> sftp -P 1234 cer@192.168.2.18
Password authentication
(cer@192.168.2.18) Password:
Connected to 192.168.2.18.
sftp> dir
Alarms Android Audiobooks DCIM Documentos Documents Download
Fotos.smsng Fotos.xplay FotosClasificadas Movies Music Nikon_WU Notifications
OtherMediaBackup Pictures Pixlr Pl@ntNet PlantNet Podcasts Recorders
Recordings Ringtones WhatsApp
sftp> dir /
/storage
sftp> dir /storage/
remote readdir("/storage/"): Permission denied
sftp>

sftp> dir /storage/
remote readdir("/storage/"): Permission denied
sftp> dir ..
remote readdir("/storage/emulated/0/../"): Permission denied
sftp>
sftp> dir /storage/emulated/0/
/storage/emulated/0/Alarms /storage/emulated/0/Android /storage/emulated/0/Audiobooks
/storage/emulated/0/DCIM /storage/emulated/0/Documentos /storage/emulated/0/Documents
/storage/emulated/0/Download /storage/emulated/0/Fotos.smsng /storage/emulated/0/Fotos.xplay
/storage/emulated/0/FotosClasificadas /storage/emulated/0/Movies /storage/emulated/0/Music
/storage/emulated/0/Nikon_WU /storage/emulated/0/Notifications /storage/emulated/0/OtherMediaBackup
/storage/emulated/0/Pictures /storage/emulated/0/Pixlr /storage/emulated/0/Pl@ntNet
/storage/emulated/0/PlantNet /storage/emulated/0/Podcasts /storage/emulated/0/Recorders
/storage/emulated/0/Recordings /storage/emulated/0/Ringtones /storage/emulated/0/WhatsApp
sftp>


So, progress :-)

cer@Telcontar:~/tmp> sshfs -p 1234 cer@192.168.2.18:/storage/emulated/0/ /home/cer/fusermount/
(cer@192.168.2.18) Password:
cer@Telcontar:~/tmp> dir ~/fusermount/
total 0
drwxrwxrwx 1 bin bin 0 Mar 4 2022 Alarms
dr-xr-xr-x 1 bin bin 0 Mar 4 2022 Android
drwxrwxrwx 1 bin bin 0 Mar 4 2022 Audiobooks
drwxrwxrwx 1 bin bin 0 Mar 16 2023 DCIM
dr-xr-xr-x 1 bin bin 0 Sep 5 2024 Documentos
drwxrwxrwx 1 bin bin 0 Apr 25 04:40 Documents
drwxrwxrwx 1 bin bin 0 Apr 24 22:59 Download
dr-xr-xr-x 1 bin bin 0 May 2 2022 Fotos.smsng
dr-xr-xr-x 1 bin bin 0 May 2 2022 Fotos.xplay
dr-xr-xr-x 1 bin bin 0 Jun 17 2023 FotosClasificadas
drwxrwxrwx 1 bin bin 0 Mar 4 2022 Movies
drwxrwxrwx 1 bin bin 0 Mar 5 2023 Music
dr-xr-xr-x 1 bin bin 0 May 15 2022 Nikon_WU
drwxrwxrwx 1 bin bin 0 May 2 2022 Notifications
dr-xr-xr-x 1 bin bin 0 May 2 2022 OtherMediaBackup
drwxrwxrwx 1 bin bin 0 Mar 2 21:18 Pictures
dr-xr-xr-x 1 bin bin 0 Oct 16 2022 Pixlr
dr-xr-xr-x 1 bin bin 0 May 2 2022 Pl@ntNet
dr-xr-xr-x 1 bin bin 0 May 2 2022 PlantNet
drwxrwxrwx 1 bin bin 0 Mar 4 2022 Podcasts
dr-xr-xr-x 1 bin bin 0 May 2 2022 Recorders
drwxrwxrwx 1 bin bin 0 Mar 4 2022 Recordings
drwxrwxrwx 1 bin bin 0 May 2 2022 Ringtones
dr-xr-xr-x 1 bin bin 0 Oct 26 2023 WhatsApp
cer@Telcontar:~/tmp>


Wow! so, now I can try rsync.

(this is one advantage of ftp/sftp over the usb cable: we are not limited by MTP quirks)


cer@Telcontar:~/Varia/Gadgetos/MovilMotorolaG52> cat bcksshfs
#!/bin/bash

OPTIONS="--archive --acls --xattrs --hard-links --sparse --stats --human-readable "
#--del
#--modify-window=1

DESTINO=2025-04-25
PREVIO=2022-05-02

rsync $OPTIONS --link-dest=../$PREVIO \
~/fusermount/ $DESTINO

cer@Telcontar:~/Varia/Gadgetos/MovilMotorolaG52> ./bcksshfs
rsync: [sender] readdir("/home/cer/fusermount/Android/data"): Permission denied (13)
rsync: [sender] readdir("/home/cer/fusermount/Android/obb"): Permission denied (13)

Number of files: 434 (dir: 434)
Number of created files: 353 (dir: 353)
Number of deleted files: 0
Number of regular files transferred: 0
Total file size: 0 bytes
Total transferred file size: 0 bytes
Literal data: 0 bytes
Matched data: 0 bytes
File list size: 0
File list generation time: 0,393 seconds
File list transfer time: 0,000 seconds
Total bytes sent: 12,08K
Total bytes received: 1,78K

sent 12,08K bytes received 1,78K bytes 413,70 bytes/sec
total size is 0 speedup is 0,00
rsync error: some files/attrs were not transferred (see previous errors) (code 23) at main.c(1336) [sender=3.2.7]
cer@Telcontar:~/Varia/Gadgetos/MovilMotorolaG52>


There is another problem: I only see directories, not files. Might be a permission problem? Everything seems owned by "bin". Maybe repeat as root.




cer@Telcontar:~/Varia/Gadgetos/MovilMotorolaG52> su
Password:
Telcontar:/home/cer/Varia/Gadgetos/MovilMotorolaG52 # Telcontar:/home/cer/Varia/Gadgetos/MovilMotorolaG52 # cat ./bcksshfs #!/bin/bash

OPTIONS="--archive --acls --xattrs --hard-links --sparse --stats --human-readable "
#--del
#--modify-window=1

DESTINO=2025-04-25
PREVIO=2022-05-02

rsync $OPTIONS --link-dest=../$PREVIO \
/home/cer/fusermount/ $DESTINO

Telcontar:/home/cer/Varia/Gadgetos/MovilMotorolaG52 # Telcontar:/home/cer/Varia/Gadgetos/MovilMotorolaG52 # ./bcksshfs
rsync: [sender] readdir("/home/cer/fusermount/Android/data"): Permission denied (13)
rsync: [sender] readdir("/home/cer/fusermount/Android/obb"): Permission denied (13)

Number of files: 434 (dir: 434)
Number of created files: 353 (dir: 353)
Number of deleted files: 0
Number of regular files transferred: 0
Total file size: 0 bytes
Total transferred file size: 0 bytes
Literal data: 0 bytes
Matched data: 0 bytes
File list size: 0
File list generation time: 0,339 seconds
File list transfer time: 0,000 seconds
Total bytes sent: 12,08K
Total bytes received: 1,78K

sent 12,08K bytes received 1,78K bytes 311,44 bytes/sec
total size is 0 speedup is 0,00
rsync error: some files/attrs were not transferred (see previous errors) (code 23) at main.c(1336) [sender=3.2.7]
Telcontar:/home/cer/Varia/Gadgetos/MovilMotorolaG52 #

Nope.

Telcontar:/home/cer/Varia/Gadgetos/MovilMotorolaG52 # l /home/cer/fusermount/DCIM/Camera/
total 0
drwxrwxrwx 1 bin bin 0 Jul 11 2024 Thumbnail/
drwxrwxrwx 1 bin bin 0 Mar 27 13:44 bf56b4888c57b866c97eyy/ Telcontar:/home/cer/Varia/Gadgetos/MovilMotorolaG52 #

Telcontar:/home/cer/Varia/Gadgetos/MovilMotorolaG52 # fusermount -u /home/cer/fusermount
Telcontar:/home/cer/Varia/Gadgetos/MovilMotorolaG52 #

It just does not see the files. No go.

But it is not just sshfs, it is plain sftp that fails:

cer@Telcontar:~/Varia/Gadgetos/MovilMotorolaG52/tmp> sftp -P 1234 cer@192.168.2.18:/storage/emulated/0/
Password authentication
(cer@192.168.2.18) Password:
Connected to 192.168.2.18.
Changing to: /storage/emulated/0/
sftp> dir
Alarms Android Audiobooks DCIM Documentos Documents Download
Fotos.smsng Fotos.xplay FotosClasificadas Movies Music Nikon_WU Notifications
OtherMediaBackup Pictures Pixlr Pl@ntNet PlantNet Podcasts Recorders
Recordings Ringtones WhatsApp
sftp> dir DCIM
DCIM/Camera DCIM/ImageApp DCIM/MiWatch DCIM/PlantNet
sftp> dir DCIM/Camera/
DCIM/Camera/Thumbnail DCIM/Camera/bf56b4888c57b866c97eyy
sftp> cd DCIM/Camera/
sftp> dir
Thumbnail bf56b4888c57b866c97eyy
sftp>

sftp> bye
cer@Telcontar:~/Varia/Gadgetos/MovilMotorolaG52/tmp>


There just there are no files seen on sftp. That's pretty bad. And plain FTP?


cer@Telcontar:~/Varia/Gadgetos/MovilMotorolaG52/tmp> ftp -P 12345 cer@192.168.2.18
Connected to 192.168.2.18.
220 Service ready for new user.
331 User name okay, need password for cer.
Password:
230 User logged in, proceed.
Remote system type is UNIX.
Using binary mode to transfer files.

dir

229 Entering Passive Mode (|||5678|)
150 File status okay; about to open data connection.
dr-x------ 0 cer cer 0 Mar 4 2022 Android
drwx------ 0 cer cer 0 Mar 5 2023 Music
drwx------ 0 cer cer 0 Mar 4 2022 Podcasts
...
226 Closing data connection.

dir DCIM

229 Entering Passive Mode (|||5678|)
150 File status okay; about to open data connection.
drwx------ 0 cer cer 0 Apr 24 21:16 Camera
drwx------ 0 cer cer 0 Sep 27 2023 PlantNet
drwx------ 0 cer cer 0 Feb 23 2023 ImageApp
drwx------ 0 cer cer 0 Mar 7 2024 MiWatch
226 Closing data connection.

dir DCIM/Camera

229 Entering Passive Mode (|||5678|)
150 File status okay; about to open data connection.
drwx------ 0 cer cer 0 Jul 11 2024 Thumbnail
drwx------ 0 cer cer 0 Mar 27 13:44 bf56b4888c57b866c97eyy
226 Closing data connection.

bye

cer@Telcontar:~/Varia/Gadgetos/MovilMotorolaG52/tmp>


Well, total failure.




--
Cheers, Carlos.

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