Error while setting RFCOMM security options

Bluez-devel Julien Campana 3 participants 3 messages May 11, 2004 – May 12, 2004 Bluetooth drivers

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Julien Campana

author

2004-05-11 14:27 UTC #0 lore raw

Hi!

I'm trying to connect to a device over RFCOMM using the flags "authenticate", "encryption" and "master". Part of the code is:=20

/******************************************/
if ((fd =3D socket(PF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM)) < 0)

     return fd;

memset(&local_addr, 0, sizeof(local_addr)); local_addr.rc_family =3D AF_BLUETOOTH; bacpy(&local_addr.rc_bdaddr, BDADDR_ANY);
if ((err =3D bind(fd, (struct sockaddr *)&local_addr, sizeof(local_addr)))

< 0) {
     close(fd);
     return err;

}

int opt =3D 0;
if (master) opt |=3D L2CAP_LM_MASTER;
if (auth) opt |=3D L2CAP_LM_AUTH;
if (encrypt) opt |=3D L2CAP_LM_ENCRYPT;

if (setsockopt(fd, SOL_RFCOMM, L2CAP_LM, &opt, sizeof(opt)) < 0) {
printf("WARNING can't set link Mode (reason: %s)\n\n",
strerror(errno));
}
/*******************************************/

This programm outputs the following message:=20 WARNING can't set link Mode (reason: Protocol not available)

Why? The L2CAP protocol is available as well as the RFCOMM protocol on my machine (l2ping actually works and my program exchanges data over RFCOMM without any problem).

Am I wrong in the way of setting these security flags?

Thank you for your answers.

Julien Campana

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Stephen Crane

2004-05-11 14:35 UTC #1 lore raw

BlueZ doesn't support these socket options for RFComm yet.

Quoted 57 lines · Julien Campana

Hi!
I'm trying to connect to a device over RFCOMM using the flags "authenticate", "encryption" and "master". Part of the code is:
/******************************************/
if ((fd = socket(PF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM)) < 0)
     return fd;
memset(&local_addr, 0, sizeof(local_addr)); local_addr.rc_family = AF_BLUETOOTH; bacpy(&local_addr.rc_bdaddr, BDADDR_ANY);
if ((err = bind(fd, (struct sockaddr *)&local_addr, sizeof(local_addr)))
< 0) {
     close(fd);
     return err;
}
int opt = 0;
if (master) opt |= L2CAP_LM_MASTER;
if (auth) opt |= L2CAP_LM_AUTH;
if (encrypt) opt |= L2CAP_LM_ENCRYPT;
if (setsockopt(fd, SOL_RFCOMM, L2CAP_LM, &opt, sizeof(opt)) < 0) {
printf("WARNING can't set link Mode (reason: %s)\n\n",
strerror(errno));
   }
/*******************************************/
This programm outputs the following message:
WARNING can't set link Mode (reason: Protocol not available)
Why? The L2CAP protocol is available as well as the RFCOMM protocol on my machine (l2ping actually works and my program exchanges data over RFCOMM without any problem).
Am I wrong in the way of setting these security flags?
Thank you for your answers.
Julien Campana
-------------------------------------------------------
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Learn developer strategies Cisco, Motorola, Ericsson & Lucent use to deliver higher performing products faster, at low TCO.
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Signature · 14 lines

Stephen Crane, Rococo Software Ltd. http://www.rococosoft.com
[email protected] +353-1-6601315 (ext 209)



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Learn developer strategies Cisco, Motorola, Ericsson & Lucent use to deliver
higher performing products faster, at low TCO.
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Marcel Holtmann

maintainer

2004-05-12 13:25 UTC #2 lore raw

In reply to Julien Campana

Hi Julien,

Quoted 8 lines

This programm outputs the following message:
WARNING can't set link Mode (reason: Protocol not available)
Why? The L2CAP protocol is available as well as the RFCOMM protocol on my machine (l2ping actually works and my program exchanges data over RFCOMM without any problem).
Am I wrong in the way of setting these security flags?

why do you think that you can set L2CAP options on a RFCOMM socket ;)

Regards

Marcel