From: Michael Brudevold <[email protected]>
LE support added for P-256 and split out from existing BREDR support for
P-192
Also attempt to free any existing values before setting new values
---
plugins/neard.c | 8 ++++----
src/eir.c | 41 +++++++++++++++++++++++++++++++++++------
src/eir.h | 10 ++++++++--
3 files changed, 47 insertions(+), 12 deletions(-)
diff --git a/plugins/neard.c b/plugins/neard.c
index 99762482c..11d9e91c4 100644
--- a/plugins/neard.c
+++ b/plugins/neard.c
@@ -352,11 +352,11 @@ static int process_eir(uint8_t *eir, size_t size, struct oob_params *remote)
remote->services = eir_data.services;
eir_data.services = NULL;
- remote->hash = eir_data.hash;
- eir_data.hash = NULL;
+ remote->hash = eir_data.hash192;
+ eir_data.hash192 = NULL;
- remote->randomizer = eir_data.randomizer;
- eir_data.randomizer = NULL;
+ remote->randomizer = eir_data.randomizer192;
+ eir_data.randomizer192 = NULL;
eir_data_free(&eir_data);
diff --git a/src/eir.c b/src/eir.c
index 2f9ee036f..79d423074 100644
--- a/src/eir.c
+++ b/src/eir.c
@@ -53,10 +53,14 @@ void eir_data_free(struct eir_data *eir)
eir->services = NULL;
g_free(eir->name);
eir->name = NULL;
- free(eir->hash);
- eir->hash = NULL;
- free(eir->randomizer);
- eir->randomizer = NULL;
+ free(eir->hash192);
+ eir->hash192 = NULL;
+ free(eir->randomizer192);
+ eir->randomizer192 = NULL;
+ free(eir->hash256);
+ eir->hash256 = NULL;
+ free(eir->randomizer256);
+ eir->randomizer256 = NULL;
g_slist_free_full(eir->msd_list, g_free);
eir->msd_list = NULL;
g_slist_free_full(eir->sd_list, sd_free);
@@ -323,13 +327,15 @@ void eir_parse(struct eir_data *eir, const uint8_t *eir_data, uint8_t eir_len)
case EIR_SSP_HASH:
if (data_len < 16)
break;
- eir->hash = util_memdup(data, 16);
+ free(eir->hash192);
+ eir->hash192 = util_memdup(data, 16);
break;
case EIR_SSP_RANDOMIZER:
if (data_len < 16)
break;
- eir->randomizer = util_memdup(data, 16);
+ free(eir->randomizer192);
+ eir->randomizer192 = util_memdup(data, 16);
break;
case EIR_DEVICE_ID:
@@ -342,6 +348,15 @@ void eir_parse(struct eir_data *eir, const uint8_t *eir_data, uint8_t eir_len)
eir->did_version = data[6] | (data[7] << 8);
break;
+ case EIR_LE_DEVICE_ADDRESS:
+ if (data_len < sizeof(bdaddr_t) + 1)
+ break;
+
+ memcpy(&eir->addr, data, sizeof(bdaddr_t));
+ eir->addr_type = data[sizeof(bdaddr_t)] & 0x1 ?
+ BDADDR_LE_RANDOM : BDADDR_LE_PUBLIC;
+ break;
+
case EIR_SVC_DATA16:
eir_parse_uuid16_data(eir, data, data_len);
break;
@@ -354,6 +369,20 @@ void eir_parse(struct eir_data *eir, const uint8_t *eir_data, uint8_t eir_len)
eir_parse_uuid128_data(eir, data, data_len);
break;
+ case EIR_LE_SC_CONF:
+ if (data_len < 16)
+ break;
+ free(eir->hash256);
+ eir->hash256 = util_memdup(data, 16);
+ break;
+
+ case EIR_LE_SC_RAND:
+ if (data_len < 16)
+ break;
+ free(eir->randomizer256);
+ eir->randomizer256 = util_memdup(data, 16);
+ break;
+
case EIR_MANUFACTURER_DATA:
eir_parse_msd(eir, data, data_len);
break;
diff --git a/src/eir.h b/src/eir.h
index 6154e23ec..b2cf00f37 100644
--- a/src/eir.h
+++ b/src/eir.h
@@ -33,9 +33,12 @@
#define EIR_PUB_TRGT_ADDR 0x17 /* LE: Public Target Address */
#define EIR_RND_TRGT_ADDR 0x18 /* LE: Random Target Address */
#define EIR_GAP_APPEARANCE 0x19 /* GAP appearance */
+#define EIR_LE_DEVICE_ADDRESS 0x1B /* LE: Bluetooth Device Address */
#define EIR_SOLICIT32 0x1F /* LE: Solicit UUIDs, 32-bit */
#define EIR_SVC_DATA32 0x20 /* LE: Service data, 32-bit UUID */
#define EIR_SVC_DATA128 0x21 /* LE: Service data, 128-bit UUID */
+#define EIR_LE_SC_CONF 0x22 /* LE: Secure Connections Confirmation Value */
+#define EIR_LE_SC_RAND 0x23 /* LE: Secure Connections Random Value */
#define EIR_TRANSPORT_DISCOVERY 0x26 /* Transport Discovery Service */
#define EIR_MANUFACTURER_DATA 0xFF /* Manufacturer Specific Data */
@@ -77,9 +80,12 @@ struct eir_data {
uint16_t appearance;
bool name_complete;
int8_t tx_power;
- uint8_t *hash;
- uint8_t *randomizer;
+ uint8_t *hash192;
+ uint8_t *randomizer192;
+ uint8_t *hash256;
+ uint8_t *randomizer256;
bdaddr_t addr;
+ uint8_t addr_type;
uint16_t did_vendor;
uint16_t did_product;
uint16_t did_version;
--
2.25.1
This is automated email and please do not reply to this email!
Dear submitter,
Thank you for submitting the patches to the linux bluetooth mailing list.
This is a CI test results with your patch series:
PW Link:https://patchwork.kernel.org/project/bluetooth/list/?series=649437
---Test result---
Test Summary:
CheckPatch FAIL 4.40 seconds
GitLint PASS 2.99 seconds
Prep - Setup ELL PASS 43.55 seconds
Build - Prep PASS 0.74 seconds
Build - Configure PASS 8.77 seconds
Build - Make PASS 1434.98 seconds
Make Check PASS 11.93 seconds
Make Check w/Valgrind PASS 450.60 seconds
Make Distcheck PASS 234.96 seconds
Build w/ext ELL - Configure PASS 8.77 seconds
Build w/ext ELL - Make PASS 1408.11 seconds
Incremental Build with patchesPASS 4282.77 seconds
Details
##############################
Test: CheckPatch - FAIL
Desc: Run checkpatch.pl script with rule in .checkpatch.conf
Output:
[v2,1/3] eir: parse data types for LE OOB pairing
WARNING:LONG_LINE_COMMENT: line length of 89 exceeds 80 columns
#202: FILE: src/eir.h:40:
+#define EIR_LE_SC_CONF 0x22 /* LE: Secure Connections Confirmation Value */
WARNING:LONG_LINE_COMMENT: line length of 83 exceeds 80 columns
#203: FILE: src/eir.h:41:
+#define EIR_LE_SC_RAND 0x23 /* LE: Secure Connections Random Value */
/github/workspace/src/12878130.patch total: 0 errors, 2 warnings, 111 lines checked
NOTE: For some of the reported defects, checkpatch may be able to
mechanically convert to the typical style using --fix or --fix-inplace.
/github/workspace/src/12878130.patch has style problems, please review.
NOTE: Ignored message types: COMMIT_MESSAGE COMPLEX_MACRO CONST_STRUCT FILE_PATH_CHANGES MISSING_SIGN_OFF PREFER_PACKED SPDX_LICENSE_TAG SPLIT_STRING SSCANF_TO_KSTRTO
NOTE: If any of the errors are false positives, please report
them to the maintainer, see CHECKPATCH in MAINTAINERS.
[v2,2/3] Accept LE formatted EIR data with neard plugin
WARNING:LONG_LINE_COMMENT: line length of 89 exceeds 80 columns
#184: FILE: plugins/neard.c:581:
+ /* nokia.com:bt, EIR, and EIR.le should not be passed together */
WARNING:LONG_LINE_COMMENT: line length of 89 exceeds 80 columns
#193: FILE: plugins/neard.c:599:
+ /* nokia.com:bt, EIR, and EIR.le should not be passed together */
WARNING:LONG_LINE_COMMENT: line length of 89 exceeds 80 columns
#206: FILE: plugins/neard.c:617:
+ /* nokia.com:bt, EIR, and EIR.le should not be passed together */
WARNING:LONG_LINE: line length of 85 exceeds 80 columns
#243: FILE: plugins/neard.c:750:
+ remote.address_type);
WARNING:LONG_LINE: line length of 85 exceeds 80 columns
#252: FILE: plugins/neard.c:774:
+ remote.address_type, io_cap);
WARNING:LONG_LINE: line length of 84 exceeds 80 columns
#322: FILE: src/adapter.h:216:
+ const bdaddr_t *bdaddr, uint8_t bdaddr_type,
WARNING:LONG_LINE: line length of 81 exceeds 80 columns
#323: FILE: src/adapter.h:217:
+ uint8_t *hash192, uint8_t *randomizer192,
WARNING:LONG_LINE: line length of 82 exceeds 80 columns
#324: FILE: src/adapter.h:218:
+ uint8_t *hash256, uint8_t *randomizer256);
/github/workspace/src/12878131.patch total: 0 errors, 8 warnings, 206 lines checked
NOTE: For some of the reported defects, checkpatch may be able to
mechanically convert to the typical style using --fix or --fix-inplace.
/github/workspace/src/12878131.patch has style problems, please review.
NOTE: Ignored message types: COMMIT_MESSAGE COMPLEX_MACRO CONST_STRUCT FILE_PATH_CHANGES MISSING_SIGN_OFF PREFER_PACKED SPDX_LICENSE_TAG SPLIT_STRING SSCANF_TO_KSTRTO
NOTE: If any of the errors are false positives, please report
them to the maintainer, see CHECKPATCH in MAINTAINERS.
---
Regards,
Linux Bluetooth
Hi Michael,
On Fri, Jun 10, 2022 at 3:49 PM Michael Brudevold <[email protected]> wrote:
>
> From: Michael Brudevold <[email protected]>
>
> LE support added for P-256 and split out from existing BREDR support for
> P-192
>
> Also attempt to free any existing values before setting new values
> ---
> plugins/neard.c | 8 ++++----
> src/eir.c | 41 +++++++++++++++++++++++++++++++++++------
> src/eir.h | 10 ++++++++--
> 3 files changed, 47 insertions(+), 12 deletions(-)
>
> diff --git a/plugins/neard.c b/plugins/neard.c
> index 99762482c..11d9e91c4 100644
> --- a/plugins/neard.c
> +++ b/plugins/neard.c
> @@ -352,11 +352,11 @@ static int process_eir(uint8_t *eir, size_t size, struct oob_params *remote)
> remote->services = eir_data.services;
> eir_data.services = NULL;
>
> - remote->hash = eir_data.hash;
> - eir_data.hash = NULL;
> + remote->hash = eir_data.hash192;
> + eir_data.hash192 = NULL;
>
> - remote->randomizer = eir_data.randomizer;
> - eir_data.randomizer = NULL;
> + remote->randomizer = eir_data.randomizer192;
> + eir_data.randomizer192 = NULL;
>
> eir_data_free(&eir_data);
>
> diff --git a/src/eir.c b/src/eir.c
> index 2f9ee036f..79d423074 100644
> --- a/src/eir.c
> +++ b/src/eir.c
> @@ -53,10 +53,14 @@ void eir_data_free(struct eir_data *eir)
> eir->services = NULL;
> g_free(eir->name);
> eir->name = NULL;
> - free(eir->hash);
> - eir->hash = NULL;
> - free(eir->randomizer);
> - eir->randomizer = NULL;
> + free(eir->hash192);
> + eir->hash192 = NULL;
> + free(eir->randomizer192);
> + eir->randomizer192 = NULL;
> + free(eir->hash256);
> + eir->hash256 = NULL;
> + free(eir->randomizer256);
> + eir->randomizer256 = NULL;
> g_slist_free_full(eir->msd_list, g_free);
> eir->msd_list = NULL;
> g_slist_free_full(eir->sd_list, sd_free);
> @@ -323,13 +327,15 @@ void eir_parse(struct eir_data *eir, const uint8_t *eir_data, uint8_t eir_len)
> case EIR_SSP_HASH:
> if (data_len < 16)
> break;
> - eir->hash = util_memdup(data, 16);
> + free(eir->hash192);
> + eir->hash192 = util_memdup(data, 16);
> break;
>
> case EIR_SSP_RANDOMIZER:
> if (data_len < 16)
> break;
> - eir->randomizer = util_memdup(data, 16);
> + free(eir->randomizer192);
> + eir->randomizer192 = util_memdup(data, 16);
> break;
>
> case EIR_DEVICE_ID:
> @@ -342,6 +348,15 @@ void eir_parse(struct eir_data *eir, const uint8_t *eir_data, uint8_t eir_len)
> eir->did_version = data[6] | (data[7] << 8);
> break;
>
> + case EIR_LE_DEVICE_ADDRESS:
> + if (data_len < sizeof(bdaddr_t) + 1)
> + break;
> +
> + memcpy(&eir->addr, data, sizeof(bdaddr_t));
> + eir->addr_type = data[sizeof(bdaddr_t)] & 0x1 ?
> + BDADDR_LE_RANDOM : BDADDR_LE_PUBLIC;
> + break;
> +
> case EIR_SVC_DATA16:
> eir_parse_uuid16_data(eir, data, data_len);
> break;
> @@ -354,6 +369,20 @@ void eir_parse(struct eir_data *eir, const uint8_t *eir_data, uint8_t eir_len)
> eir_parse_uuid128_data(eir, data, data_len);
> break;
>
> + case EIR_LE_SC_CONF:
> + if (data_len < 16)
> + break;
> + free(eir->hash256);
> + eir->hash256 = util_memdup(data, 16);
> + break;
> +
> + case EIR_LE_SC_RAND:
> + if (data_len < 16)
> + break;
> + free(eir->randomizer256);
> + eir->randomizer256 = util_memdup(data, 16);
> + break;
> +
> case EIR_MANUFACTURER_DATA:
> eir_parse_msd(eir, data, data_len);
> break;
> diff --git a/src/eir.h b/src/eir.h
> index 6154e23ec..b2cf00f37 100644
> --- a/src/eir.h
> +++ b/src/eir.h
> @@ -33,9 +33,12 @@
> #define EIR_PUB_TRGT_ADDR 0x17 /* LE: Public Target Address */
> #define EIR_RND_TRGT_ADDR 0x18 /* LE: Random Target Address */
> #define EIR_GAP_APPEARANCE 0x19 /* GAP appearance */
> +#define EIR_LE_DEVICE_ADDRESS 0x1B /* LE: Bluetooth Device Address */
> #define EIR_SOLICIT32 0x1F /* LE: Solicit UUIDs, 32-bit */
> #define EIR_SVC_DATA32 0x20 /* LE: Service data, 32-bit UUID */
> #define EIR_SVC_DATA128 0x21 /* LE: Service data, 128-bit UUID */
> +#define EIR_LE_SC_CONF 0x22 /* LE: Secure Connections Confirmation Value */
> +#define EIR_LE_SC_RAND 0x23 /* LE: Secure Connections Random Value */
> #define EIR_TRANSPORT_DISCOVERY 0x26 /* Transport Discovery Service */
> #define EIR_MANUFACTURER_DATA 0xFF /* Manufacturer Specific Data */
>
> @@ -77,9 +80,12 @@ struct eir_data {
> uint16_t appearance;
> bool name_complete;
> int8_t tx_power;
> - uint8_t *hash;
> - uint8_t *randomizer;
> + uint8_t *hash192;
> + uint8_t *randomizer192;
> + uint8_t *hash256;
> + uint8_t *randomizer256;
> bdaddr_t addr;
> + uint8_t addr_type;
> uint16_t did_vendor;
> uint16_t did_product;
> uint16_t did_version;
> --
> 2.25.1
It might be better to handle this via bt_ad instance instead of
eir_data, in fact the plan was always to switch to bt_ad but it seems
we forgot about it at some point.
--
Luiz Augusto von Dentz
Hi Luiz,
On Sat, Jun 11, 2022 at 3:27 PM Luiz Augusto von Dentz
<[email protected]> wrote:
>
> Hi Michael,
>
> On Fri, Jun 10, 2022 at 3:49 PM Michael Brudevold <[email protected]> wrote:
> >
> > From: Michael Brudevold <[email protected]>
> >
> > LE support added for P-256 and split out from existing BREDR support for
> > P-192
> >
> > Also attempt to free any existing values before setting new values
> > ---
> > plugins/neard.c | 8 ++++----
> > src/eir.c | 41 +++++++++++++++++++++++++++++++++++------
> > src/eir.h | 10 ++++++++--
> > 3 files changed, 47 insertions(+), 12 deletions(-)
> >
> > diff --git a/plugins/neard.c b/plugins/neard.c
> > index 99762482c..11d9e91c4 100644
> > --- a/plugins/neard.c
> > +++ b/plugins/neard.c
> > @@ -352,11 +352,11 @@ static int process_eir(uint8_t *eir, size_t size, struct oob_params *remote)
> > remote->services = eir_data.services;
> > eir_data.services = NULL;
> >
> > - remote->hash = eir_data.hash;
> > - eir_data.hash = NULL;
> > + remote->hash = eir_data.hash192;
> > + eir_data.hash192 = NULL;
> >
> > - remote->randomizer = eir_data.randomizer;
> > - eir_data.randomizer = NULL;
> > + remote->randomizer = eir_data.randomizer192;
> > + eir_data.randomizer192 = NULL;
> >
> > eir_data_free(&eir_data);
> >
> > diff --git a/src/eir.c b/src/eir.c
> > index 2f9ee036f..79d423074 100644
> > --- a/src/eir.c
> > +++ b/src/eir.c
> > @@ -53,10 +53,14 @@ void eir_data_free(struct eir_data *eir)
> > eir->services = NULL;
> > g_free(eir->name);
> > eir->name = NULL;
> > - free(eir->hash);
> > - eir->hash = NULL;
> > - free(eir->randomizer);
> > - eir->randomizer = NULL;
> > + free(eir->hash192);
> > + eir->hash192 = NULL;
> > + free(eir->randomizer192);
> > + eir->randomizer192 = NULL;
> > + free(eir->hash256);
> > + eir->hash256 = NULL;
> > + free(eir->randomizer256);
> > + eir->randomizer256 = NULL;
> > g_slist_free_full(eir->msd_list, g_free);
> > eir->msd_list = NULL;
> > g_slist_free_full(eir->sd_list, sd_free);
> > @@ -323,13 +327,15 @@ void eir_parse(struct eir_data *eir, const uint8_t *eir_data, uint8_t eir_len)
> > case EIR_SSP_HASH:
> > if (data_len < 16)
> > break;
> > - eir->hash = util_memdup(data, 16);
> > + free(eir->hash192);
> > + eir->hash192 = util_memdup(data, 16);
> > break;
> >
> > case EIR_SSP_RANDOMIZER:
> > if (data_len < 16)
> > break;
> > - eir->randomizer = util_memdup(data, 16);
> > + free(eir->randomizer192);
> > + eir->randomizer192 = util_memdup(data, 16);
> > break;
> >
> > case EIR_DEVICE_ID:
> > @@ -342,6 +348,15 @@ void eir_parse(struct eir_data *eir, const uint8_t *eir_data, uint8_t eir_len)
> > eir->did_version = data[6] | (data[7] << 8);
> > break;
> >
> > + case EIR_LE_DEVICE_ADDRESS:
> > + if (data_len < sizeof(bdaddr_t) + 1)
> > + break;
> > +
> > + memcpy(&eir->addr, data, sizeof(bdaddr_t));
> > + eir->addr_type = data[sizeof(bdaddr_t)] & 0x1 ?
> > + BDADDR_LE_RANDOM : BDADDR_LE_PUBLIC;
> > + break;
> > +
> > case EIR_SVC_DATA16:
> > eir_parse_uuid16_data(eir, data, data_len);
> > break;
> > @@ -354,6 +369,20 @@ void eir_parse(struct eir_data *eir, const uint8_t *eir_data, uint8_t eir_len)
> > eir_parse_uuid128_data(eir, data, data_len);
> > break;
> >
> > + case EIR_LE_SC_CONF:
> > + if (data_len < 16)
> > + break;
> > + free(eir->hash256);
> > + eir->hash256 = util_memdup(data, 16);
> > + break;
> > +
> > + case EIR_LE_SC_RAND:
> > + if (data_len < 16)
> > + break;
> > + free(eir->randomizer256);
> > + eir->randomizer256 = util_memdup(data, 16);
> > + break;
> > +
> > case EIR_MANUFACTURER_DATA:
> > eir_parse_msd(eir, data, data_len);
> > break;
> > diff --git a/src/eir.h b/src/eir.h
> > index 6154e23ec..b2cf00f37 100644
> > --- a/src/eir.h
> > +++ b/src/eir.h
> > @@ -33,9 +33,12 @@
> > #define EIR_PUB_TRGT_ADDR 0x17 /* LE: Public Target Address */
> > #define EIR_RND_TRGT_ADDR 0x18 /* LE: Random Target Address */
> > #define EIR_GAP_APPEARANCE 0x19 /* GAP appearance */
> > +#define EIR_LE_DEVICE_ADDRESS 0x1B /* LE: Bluetooth Device Address */
> > #define EIR_SOLICIT32 0x1F /* LE: Solicit UUIDs, 32-bit */
> > #define EIR_SVC_DATA32 0x20 /* LE: Service data, 32-bit UUID */
> > #define EIR_SVC_DATA128 0x21 /* LE: Service data, 128-bit UUID */
> > +#define EIR_LE_SC_CONF 0x22 /* LE: Secure Connections Confirmation Value */
> > +#define EIR_LE_SC_RAND 0x23 /* LE: Secure Connections Random Value */
> > #define EIR_TRANSPORT_DISCOVERY 0x26 /* Transport Discovery Service */
> > #define EIR_MANUFACTURER_DATA 0xFF /* Manufacturer Specific Data */
> >
> > @@ -77,9 +80,12 @@ struct eir_data {
> > uint16_t appearance;
> > bool name_complete;
> > int8_t tx_power;
> > - uint8_t *hash;
> > - uint8_t *randomizer;
> > + uint8_t *hash192;
> > + uint8_t *randomizer192;
> > + uint8_t *hash256;
> > + uint8_t *randomizer256;
> > bdaddr_t addr;
> > + uint8_t addr_type;
> > uint16_t did_vendor;
> > uint16_t did_product;
> > uint16_t did_version;
> > --
> > 2.25.1
>
> It might be better to handle this via bt_ad instance instead of
> eir_data, in fact the plan was always to switch to bt_ad but it seems
> we forgot about it at some point.
Are you thinking something like below (doesn't fully compile,
name2utf8 is static in eir so I did nothing about that yet)?
Basically where the ad code parses the EIR data, but the neard plugin
still manages what to do with the data? The alternative would be
where device.c became smarter to consume the ad struct itself and the
neard plugin becomes a simple conduit for the ad data.
index 77a4630da..3d4064515 100644
--- a/plugins/neard.c
+++ b/plugins/neard.c
@@ -31,6 +31,7 @@
#include "src/agent.h"
#include "src/btd.h"
#include "src/shared/util.h"
+#include "src/shared/ad.h"
#define NEARD_NAME "org.neard"
#define NEARD_PATH "/org/neard"
@@ -336,6 +337,52 @@ static int check_device(struct btd_device *device)
return 0;
}
+static void process_oob_adv(void *data, void *user_data)
+{
+ struct bt_ad_data *ad_data = data;
+ struct oob_params *remote = user_data;
+ uint8_t name_len;
+
+ switch (ad_data->type) {
+ case EIR_NAME_SHORT:
+ case EIR_NAME_COMPLETE:
+ name_len = ad_data->len;
+
+ /* Some vendors put a NUL byte terminator into
+ * the name */
+ while (name_len > 0 && ad_data->data[name_len - 1] == '\0')
+ name_len--;
+
+ g_free(remote->name);
+
+ remote->name = name2utf8(ad_data->data, name_len);
+ break;
+
+ case BT_AD_LE_DEVICE_ADDRESS:
+ if (ad_data->len < sizeof(bdaddr_t) + 1)
+ break;
+
+ memcpy(&remote->address, ad_data->data, sizeof(bdaddr_t));
+ remote->address_type = ad_data->data[sizeof(bdaddr_t)] & 0x1 ?
+ BDADDR_LE_RANDOM : BDADDR_LE_PUBLIC;
+ break;
+
+ case EIR_LE_SC_CONF:
+ if (ad_data->len < 16)
+ break;
+ free(remote->hash256);
+ remote->hash256 = util_memdup(ad_data->data, 16);
+ break;
+
+ case EIR_LE_SC_RAND:
+ if (ad_data->len < 16)
+ break;
+ free(remote->randomizer256);
+ remote->randomizer256 = util_memdup(ad_data->data, 16);
+ break;
+ }
+}
+
static int process_eir(uint8_t *eir, size_t size, struct oob_params *remote)
{
struct eir_data eir_data;
@@ -370,32 +417,17 @@ static int process_eir(uint8_t *eir, size_t
size, struct oob_params *remote)
static void process_eir_le(uint8_t *eir, size_t size, struct
oob_params *remote)
{
- struct eir_data eir_data;
+ struct bt_ad *ad;
DBG("size %zu", size);
- memset(&eir_data, 0, sizeof(eir_data));
-
- eir_parse(&eir_data, eir, size);
-
- bacpy(&remote->address, &eir_data.addr);
- remote->address_type = eir_data.addr_type;
-
- remote->class = eir_data.class;
-
- remote->name = eir_data.name;
- eir_data.name = NULL;
-
- remote->services = eir_data.services;
- eir_data.services = NULL;
-
- remote->hash256 = eir_data.hash256;
- eir_data.hash256 = NULL;
+ ad = bt_ad_new_with_data(size, eir);
- remote->randomizer256 = eir_data.randomizer256;
- eir_data.randomizer256 = NULL;
+ if (ad) {
+ bt_ad_foreach_data(ad, process_oob_adv, remote);
- eir_data_free(&eir_data);
+ bt_ad_unref(ad);
+ }
}
Hi Mike,
On Mon, Jun 13, 2022 at 2:42 PM Mike Brudevold <[email protected]> wrote:
>
> Hi Luiz,
>
> > It might be better to handle this via bt_ad instance instead of
> > eir_data, in fact the plan was always to switch to bt_ad but it seems
> > we forgot about it at some point.
>
> Are you thinking something like below (doesn't fully compile,
> name2utf8 is static in eir so I did nothing about that yet)?
> Basically where the ad code parses the EIR data, but the neard plugin
> still manages what to do with the data? The alternative would be
> where device.c became smarter to consume the ad struct itself and the
> neard plugin becomes a simple conduit for the ad data.
The later is probably better alternative, like I said I wrote bt_ad to
replace eir handling completely so we could also write proper unit
testing for it, Im fine if you want to take the time to change the
daemon core itself but at least introduce support for the types you
will be using in the plugin and then make use of them.
> index 77a4630da..3d4064515 100644
> --- a/plugins/neard.c
> +++ b/plugins/neard.c
> @@ -31,6 +31,7 @@
> #include "src/agent.h"
> #include "src/btd.h"
> #include "src/shared/util.h"
> +#include "src/shared/ad.h"
>
> #define NEARD_NAME "org.neard"
> #define NEARD_PATH "/org/neard"
> @@ -336,6 +337,52 @@ static int check_device(struct btd_device *device)
> return 0;
> }
>
> +static void process_oob_adv(void *data, void *user_data)
> +{
> + struct bt_ad_data *ad_data = data;
> + struct oob_params *remote = user_data;
> + uint8_t name_len;
> +
> + switch (ad_data->type) {
> + case EIR_NAME_SHORT:
> + case EIR_NAME_COMPLETE:
> + name_len = ad_data->len;
> +
> + /* Some vendors put a NUL byte terminator into
> + * the name */
> + while (name_len > 0 && ad_data->data[name_len - 1] == '\0')
> + name_len--;
> +
> + g_free(remote->name);
> +
> + remote->name = name2utf8(ad_data->data, name_len);
> + break;
> +
> + case BT_AD_LE_DEVICE_ADDRESS:
> + if (ad_data->len < sizeof(bdaddr_t) + 1)
> + break;
> +
> + memcpy(&remote->address, ad_data->data, sizeof(bdaddr_t));
> + remote->address_type = ad_data->data[sizeof(bdaddr_t)] & 0x1 ?
> + BDADDR_LE_RANDOM : BDADDR_LE_PUBLIC;
> + break;
> +
> + case EIR_LE_SC_CONF:
> + if (ad_data->len < 16)
> + break;
> + free(remote->hash256);
> + remote->hash256 = util_memdup(ad_data->data, 16);
> + break;
> +
> + case EIR_LE_SC_RAND:
> + if (ad_data->len < 16)
> + break;
> + free(remote->randomizer256);
> + remote->randomizer256 = util_memdup(ad_data->data, 16);
> + break;
> + }
> +}
Do we need to duplicate this information? I'd consider just using the
bt_ad instance to parse and store them, well perhaps we want to
introduce something like bt_ad_foreach_type so you can locate the data
by type?
> static int process_eir(uint8_t *eir, size_t size, struct oob_params *remote)
> {
> struct eir_data eir_data;
> @@ -370,32 +417,17 @@ static int process_eir(uint8_t *eir, size_t
> size, struct oob_params *remote)
>
> static void process_eir_le(uint8_t *eir, size_t size, struct
> oob_params *remote)
> {
> - struct eir_data eir_data;
> + struct bt_ad *ad;
>
> DBG("size %zu", size);
>
> - memset(&eir_data, 0, sizeof(eir_data));
> -
> - eir_parse(&eir_data, eir, size);
> -
> - bacpy(&remote->address, &eir_data.addr);
> - remote->address_type = eir_data.addr_type;
> -
> - remote->class = eir_data.class;
> -
> - remote->name = eir_data.name;
> - eir_data.name = NULL;
> -
> - remote->services = eir_data.services;
> - eir_data.services = NULL;
> -
> - remote->hash256 = eir_data.hash256;
> - eir_data.hash256 = NULL;
> + ad = bt_ad_new_with_data(size, eir);
>
> - remote->randomizer256 = eir_data.randomizer256;
> - eir_data.randomizer256 = NULL;
> + if (ad) {
> + bt_ad_foreach_data(ad, process_oob_adv, remote);
>
> - eir_data_free(&eir_data);
> + bt_ad_unref(ad);
> + }
> }
--
Luiz Augusto von Dentz
Hi Luiz,
On Mon, Jun 13, 2022 at 4:55 PM Luiz Augusto von Dentz
<[email protected]> wrote:
>
> Hi Mike,
>
> On Mon, Jun 13, 2022 at 2:42 PM Mike Brudevold <[email protected]> wrote:
> >
> > Hi Luiz,
> >
> > > It might be better to handle this via bt_ad instance instead of
> > > eir_data, in fact the plan was always to switch to bt_ad but it seems
> > > we forgot about it at some point.
> >
> > Are you thinking something like below (doesn't fully compile,
> > name2utf8 is static in eir so I did nothing about that yet)?
> > Basically where the ad code parses the EIR data, but the neard plugin
> > still manages what to do with the data? The alternative would be
> > where device.c became smarter to consume the ad struct itself and the
> > neard plugin becomes a simple conduit for the ad data.
>
> The later is probably better alternative, like I said I wrote bt_ad to
> replace eir handling completely so we could also write proper unit
> testing for it, Im fine if you want to take the time to change the
> daemon core itself but at least introduce support for the types you
> will be using in the plugin and then make use of them.
>
> > index 77a4630da..3d4064515 100644
> > --- a/plugins/neard.c
> > +++ b/plugins/neard.c
> > @@ -31,6 +31,7 @@
> > #include "src/agent.h"
> > #include "src/btd.h"
> > #include "src/shared/util.h"
> > +#include "src/shared/ad.h"
> >
> > #define NEARD_NAME "org.neard"
> > #define NEARD_PATH "/org/neard"
> > @@ -336,6 +337,52 @@ static int check_device(struct btd_device *device)
> > return 0;
> > }
> >
> > +static void process_oob_adv(void *data, void *user_data)
> > +{
> > + struct bt_ad_data *ad_data = data;
> > + struct oob_params *remote = user_data;
> > + uint8_t name_len;
> > +
> > + switch (ad_data->type) {
> > + case EIR_NAME_SHORT:
> > + case EIR_NAME_COMPLETE:
> > + name_len = ad_data->len;
> > +
> > + /* Some vendors put a NUL byte terminator into
> > + * the name */
> > + while (name_len > 0 && ad_data->data[name_len - 1] == '\0')
> > + name_len--;
> > +
> > + g_free(remote->name);
> > +
> > + remote->name = name2utf8(ad_data->data, name_len);
> > + break;
> > +
> > + case BT_AD_LE_DEVICE_ADDRESS:
> > + if (ad_data->len < sizeof(bdaddr_t) + 1)
> > + break;
> > +
> > + memcpy(&remote->address, ad_data->data, sizeof(bdaddr_t));
> > + remote->address_type = ad_data->data[sizeof(bdaddr_t)] & 0x1 ?
> > + BDADDR_LE_RANDOM : BDADDR_LE_PUBLIC;
> > + break;
> > +
> > + case EIR_LE_SC_CONF:
> > + if (ad_data->len < 16)
> > + break;
> > + free(remote->hash256);
> > + remote->hash256 = util_memdup(ad_data->data, 16);
> > + break;
> > +
> > + case EIR_LE_SC_RAND:
> > + if (ad_data->len < 16)
> > + break;
> > + free(remote->randomizer256);
> > + remote->randomizer256 = util_memdup(ad_data->data, 16);
> > + break;
> > + }
> > +}
>
> Do we need to duplicate this information? I'd consider just using the
> bt_ad instance to parse and store them, well perhaps we want to
> introduce something like bt_ad_foreach_type so you can locate the data
> by type?
That's partly what I was checking on. The ad code doesn't have much
functionality right now to be able to parse the meaning of the data,
beyond storing them in TLV format (bt_ad_data). Which is the opposite
to how the data is given to ad if you're creating an advertisement
(e.g., service UUIDs are stored in bt_uuid_t format inside the service
queue when using bt_ad_add_service_uuid, not in the data queue). This
means the ad code likely has to get smarter, but I wanted to make sure
I wasn't missing something that should have been obvious. If the ad
code can present the data back in a usable format, then it wouldn't
really have to be duplicated. Otherwise this code would have been an
easy way to not use the eir code while the ad code gets developed.
With some concern still that there's a type_reject_list related to the
data ad queue, but that can be completely bypassed when using
bt_ad_new_with_data - so this method is doing something that seems
unintended.
>
> > static int process_eir(uint8_t *eir, size_t size, struct oob_params *remote)
> > {
> > struct eir_data eir_data;
> > @@ -370,32 +417,17 @@ static int process_eir(uint8_t *eir, size_t
> > size, struct oob_params *remote)
> >
> > static void process_eir_le(uint8_t *eir, size_t size, struct
> > oob_params *remote)
> > {
> > - struct eir_data eir_data;
> > + struct bt_ad *ad;
> >
> > DBG("size %zu", size);
> >
> > - memset(&eir_data, 0, sizeof(eir_data));
> > -
> > - eir_parse(&eir_data, eir, size);
> > -
> > - bacpy(&remote->address, &eir_data.addr);
> > - remote->address_type = eir_data.addr_type;
> > -
> > - remote->class = eir_data.class;
> > -
> > - remote->name = eir_data.name;
> > - eir_data.name = NULL;
> > -
> > - remote->services = eir_data.services;
> > - eir_data.services = NULL;
> > -
> > - remote->hash256 = eir_data.hash256;
> > - eir_data.hash256 = NULL;
> > + ad = bt_ad_new_with_data(size, eir);
> >
> > - remote->randomizer256 = eir_data.randomizer256;
> > - eir_data.randomizer256 = NULL;
> > + if (ad) {
> > + bt_ad_foreach_data(ad, process_oob_adv, remote);
> >
> > - eir_data_free(&eir_data);
> > + bt_ad_unref(ad);
> > + }
> > }
>
>
>
> --
> Luiz Augusto von Dentz
Hi Mike,
On Mon, Jun 13, 2022 at 3:28 PM Mike Brudevold <[email protected]> wrote:
>
> Hi Luiz,
>
> On Mon, Jun 13, 2022 at 4:55 PM Luiz Augusto von Dentz
> <[email protected]> wrote:
> >
> > Hi Mike,
> >
> > On Mon, Jun 13, 2022 at 2:42 PM Mike Brudevold <[email protected]> wrote:
> > >
> > > Hi Luiz,
> > >
> > > > It might be better to handle this via bt_ad instance instead of
> > > > eir_data, in fact the plan was always to switch to bt_ad but it seems
> > > > we forgot about it at some point.
> > >
> > > Are you thinking something like below (doesn't fully compile,
> > > name2utf8 is static in eir so I did nothing about that yet)?
> > > Basically where the ad code parses the EIR data, but the neard plugin
> > > still manages what to do with the data? The alternative would be
> > > where device.c became smarter to consume the ad struct itself and the
> > > neard plugin becomes a simple conduit for the ad data.
> >
> > The later is probably better alternative, like I said I wrote bt_ad to
> > replace eir handling completely so we could also write proper unit
> > testing for it, Im fine if you want to take the time to change the
> > daemon core itself but at least introduce support for the types you
> > will be using in the plugin and then make use of them.
> >
> > > index 77a4630da..3d4064515 100644
> > > --- a/plugins/neard.c
> > > +++ b/plugins/neard.c
> > > @@ -31,6 +31,7 @@
> > > #include "src/agent.h"
> > > #include "src/btd.h"
> > > #include "src/shared/util.h"
> > > +#include "src/shared/ad.h"
> > >
> > > #define NEARD_NAME "org.neard"
> > > #define NEARD_PATH "/org/neard"
> > > @@ -336,6 +337,52 @@ static int check_device(struct btd_device *device)
> > > return 0;
> > > }
> > >
> > > +static void process_oob_adv(void *data, void *user_data)
> > > +{
> > > + struct bt_ad_data *ad_data = data;
> > > + struct oob_params *remote = user_data;
> > > + uint8_t name_len;
> > > +
> > > + switch (ad_data->type) {
> > > + case EIR_NAME_SHORT:
> > > + case EIR_NAME_COMPLETE:
> > > + name_len = ad_data->len;
> > > +
> > > + /* Some vendors put a NUL byte terminator into
> > > + * the name */
> > > + while (name_len > 0 && ad_data->data[name_len - 1] == '\0')
> > > + name_len--;
> > > +
> > > + g_free(remote->name);
> > > +
> > > + remote->name = name2utf8(ad_data->data, name_len);
> > > + break;
> > > +
> > > + case BT_AD_LE_DEVICE_ADDRESS:
> > > + if (ad_data->len < sizeof(bdaddr_t) + 1)
> > > + break;
> > > +
> > > + memcpy(&remote->address, ad_data->data, sizeof(bdaddr_t));
> > > + remote->address_type = ad_data->data[sizeof(bdaddr_t)] & 0x1 ?
> > > + BDADDR_LE_RANDOM : BDADDR_LE_PUBLIC;
> > > + break;
> > > +
> > > + case EIR_LE_SC_CONF:
> > > + if (ad_data->len < 16)
> > > + break;
> > > + free(remote->hash256);
> > > + remote->hash256 = util_memdup(ad_data->data, 16);
> > > + break;
> > > +
> > > + case EIR_LE_SC_RAND:
> > > + if (ad_data->len < 16)
> > > + break;
> > > + free(remote->randomizer256);
> > > + remote->randomizer256 = util_memdup(ad_data->data, 16);
> > > + break;
> > > + }
> > > +}
> >
> > Do we need to duplicate this information? I'd consider just using the
> > bt_ad instance to parse and store them, well perhaps we want to
> > introduce something like bt_ad_foreach_type so you can locate the data
> > by type?
>
> That's partly what I was checking on. The ad code doesn't have much
> functionality right now to be able to parse the meaning of the data,
> beyond storing them in TLV format (bt_ad_data). Which is the opposite
> to how the data is given to ad if you're creating an advertisement
> (e.g., service UUIDs are stored in bt_uuid_t format inside the service
> queue when using bt_ad_add_service_uuid, not in the data queue). This
> means the ad code likely has to get smarter, but I wanted to make sure
> I wasn't missing something that should have been obvious. If the ad
> code can present the data back in a usable format, then it wouldn't
> really have to be duplicated. Otherwise this code would have been an
> easy way to not use the eir code while the ad code gets developed.
> With some concern still that there's a type_reject_list related to the
> data ad queue, but that can be completely bypassed when using
> bt_ad_new_with_data - so this method is doing something that seems
> unintended.
Are you missing some feedback on these changes?
> >
> > > static int process_eir(uint8_t *eir, size_t size, struct oob_params *remote)
> > > {
> > > struct eir_data eir_data;
> > > @@ -370,32 +417,17 @@ static int process_eir(uint8_t *eir, size_t
> > > size, struct oob_params *remote)
> > >
> > > static void process_eir_le(uint8_t *eir, size_t size, struct
> > > oob_params *remote)
> > > {
> > > - struct eir_data eir_data;
> > > + struct bt_ad *ad;
> > >
> > > DBG("size %zu", size);
> > >
> > > - memset(&eir_data, 0, sizeof(eir_data));
> > > -
> > > - eir_parse(&eir_data, eir, size);
> > > -
> > > - bacpy(&remote->address, &eir_data.addr);
> > > - remote->address_type = eir_data.addr_type;
> > > -
> > > - remote->class = eir_data.class;
> > > -
> > > - remote->name = eir_data.name;
> > > - eir_data.name = NULL;
> > > -
> > > - remote->services = eir_data.services;
> > > - eir_data.services = NULL;
> > > -
> > > - remote->hash256 = eir_data.hash256;
> > > - eir_data.hash256 = NULL;
> > > + ad = bt_ad_new_with_data(size, eir);
> > >
> > > - remote->randomizer256 = eir_data.randomizer256;
> > > - eir_data.randomizer256 = NULL;
> > > + if (ad) {
> > > + bt_ad_foreach_data(ad, process_oob_adv, remote);
> > >
> > > - eir_data_free(&eir_data);
> > > + bt_ad_unref(ad);
> > > + }
> > > }
> >
> >
> >
> > --
> > Luiz Augusto von Dentz
--
Luiz Augusto von Dentz
Hi Luiz,
On Tue, Jun 21, 2022 at 1:57 PM Luiz Augusto von Dentz
<[email protected]> wrote:
>
> Hi Mike,
>
> On Mon, Jun 13, 2022 at 3:28 PM Mike Brudevold <[email protected]> wrote:
> >
> > Hi Luiz,
> >
> > On Mon, Jun 13, 2022 at 4:55 PM Luiz Augusto von Dentz
> > <[email protected]> wrote:
> > >
> > > Hi Mike,
> > >
> > > On Mon, Jun 13, 2022 at 2:42 PM Mike Brudevold <[email protected]> wrote:
> > > >
> > > > Hi Luiz,
> > > >
> > > > > It might be better to handle this via bt_ad instance instead of
> > > > > eir_data, in fact the plan was always to switch to bt_ad but it seems
> > > > > we forgot about it at some point.
> > > >
> > > > Are you thinking something like below (doesn't fully compile,
> > > > name2utf8 is static in eir so I did nothing about that yet)?
> > > > Basically where the ad code parses the EIR data, but the neard plugin
> > > > still manages what to do with the data? The alternative would be
> > > > where device.c became smarter to consume the ad struct itself and the
> > > > neard plugin becomes a simple conduit for the ad data.
> > >
> > > The later is probably better alternative, like I said I wrote bt_ad to
> > > replace eir handling completely so we could also write proper unit
> > > testing for it, Im fine if you want to take the time to change the
> > > daemon core itself but at least introduce support for the types you
> > > will be using in the plugin and then make use of them.
> > >
> > > > index 77a4630da..3d4064515 100644
> > > > --- a/plugins/neard.c
> > > > +++ b/plugins/neard.c
> > > > @@ -31,6 +31,7 @@
> > > > #include "src/agent.h"
> > > > #include "src/btd.h"
> > > > #include "src/shared/util.h"
> > > > +#include "src/shared/ad.h"
> > > >
> > > > #define NEARD_NAME "org.neard"
> > > > #define NEARD_PATH "/org/neard"
> > > > @@ -336,6 +337,52 @@ static int check_device(struct btd_device *device)
> > > > return 0;
> > > > }
> > > >
> > > > +static void process_oob_adv(void *data, void *user_data)
> > > > +{
> > > > + struct bt_ad_data *ad_data = data;
> > > > + struct oob_params *remote = user_data;
> > > > + uint8_t name_len;
> > > > +
> > > > + switch (ad_data->type) {
> > > > + case EIR_NAME_SHORT:
> > > > + case EIR_NAME_COMPLETE:
> > > > + name_len = ad_data->len;
> > > > +
> > > > + /* Some vendors put a NUL byte terminator into
> > > > + * the name */
> > > > + while (name_len > 0 && ad_data->data[name_len - 1] == '\0')
> > > > + name_len--;
> > > > +
> > > > + g_free(remote->name);
> > > > +
> > > > + remote->name = name2utf8(ad_data->data, name_len);
> > > > + break;
> > > > +
> > > > + case BT_AD_LE_DEVICE_ADDRESS:
> > > > + if (ad_data->len < sizeof(bdaddr_t) + 1)
> > > > + break;
> > > > +
> > > > + memcpy(&remote->address, ad_data->data, sizeof(bdaddr_t));
> > > > + remote->address_type = ad_data->data[sizeof(bdaddr_t)] & 0x1 ?
> > > > + BDADDR_LE_RANDOM : BDADDR_LE_PUBLIC;
> > > > + break;
> > > > +
> > > > + case EIR_LE_SC_CONF:
> > > > + if (ad_data->len < 16)
> > > > + break;
> > > > + free(remote->hash256);
> > > > + remote->hash256 = util_memdup(ad_data->data, 16);
> > > > + break;
> > > > +
> > > > + case EIR_LE_SC_RAND:
> > > > + if (ad_data->len < 16)
> > > > + break;
> > > > + free(remote->randomizer256);
> > > > + remote->randomizer256 = util_memdup(ad_data->data, 16);
> > > > + break;
> > > > + }
> > > > +}
> > >
> > > Do we need to duplicate this information? I'd consider just using the
> > > bt_ad instance to parse and store them, well perhaps we want to
> > > introduce something like bt_ad_foreach_type so you can locate the data
> > > by type?
> >
> > That's partly what I was checking on. The ad code doesn't have much
> > functionality right now to be able to parse the meaning of the data,
> > beyond storing them in TLV format (bt_ad_data). Which is the opposite
> > to how the data is given to ad if you're creating an advertisement
> > (e.g., service UUIDs are stored in bt_uuid_t format inside the service
> > queue when using bt_ad_add_service_uuid, not in the data queue). This
> > means the ad code likely has to get smarter, but I wanted to make sure
> > I wasn't missing something that should have been obvious. If the ad
> > code can present the data back in a usable format, then it wouldn't
> > really have to be duplicated. Otherwise this code would have been an
> > easy way to not use the eir code while the ad code gets developed.
> > With some concern still that there's a type_reject_list related to the
> > data ad queue, but that can be completely bypassed when using
> > bt_ad_new_with_data - so this method is doing something that seems
> > unintended.
>
> Are you missing some feedback on these changes?
If you have any, I welcome them. I have an idea of what I would do to
augment struct bt_ad by making bt_ad_new_with_data smarter to parse
out to other queues/data values, but it hasn't been the highest
priority so I haven't put any time into it.
>
> > >
> > > > static int process_eir(uint8_t *eir, size_t size, struct oob_params *remote)
> > > > {
> > > > struct eir_data eir_data;
> > > > @@ -370,32 +417,17 @@ static int process_eir(uint8_t *eir, size_t
> > > > size, struct oob_params *remote)
> > > >
> > > > static void process_eir_le(uint8_t *eir, size_t size, struct
> > > > oob_params *remote)
> > > > {
> > > > - struct eir_data eir_data;
> > > > + struct bt_ad *ad;
> > > >
> > > > DBG("size %zu", size);
> > > >
> > > > - memset(&eir_data, 0, sizeof(eir_data));
> > > > -
> > > > - eir_parse(&eir_data, eir, size);
> > > > -
> > > > - bacpy(&remote->address, &eir_data.addr);
> > > > - remote->address_type = eir_data.addr_type;
> > > > -
> > > > - remote->class = eir_data.class;
> > > > -
> > > > - remote->name = eir_data.name;
> > > > - eir_data.name = NULL;
> > > > -
> > > > - remote->services = eir_data.services;
> > > > - eir_data.services = NULL;
> > > > -
> > > > - remote->hash256 = eir_data.hash256;
> > > > - eir_data.hash256 = NULL;
> > > > + ad = bt_ad_new_with_data(size, eir);
> > > >
> > > > - remote->randomizer256 = eir_data.randomizer256;
> > > > - eir_data.randomizer256 = NULL;
> > > > + if (ad) {
> > > > + bt_ad_foreach_data(ad, process_oob_adv, remote);
> > > >
> > > > - eir_data_free(&eir_data);
> > > > + bt_ad_unref(ad);
> > > > + }
> > > > }
> > >
> > >
> > >
> > > --
> > > Luiz Augusto von Dentz
>
>
>
> --
> Luiz Augusto von Dentz