Individual IP Accounting for WiFi Clients
by guna.aravind＠gmail.com
I have did implementation for IP Accounting for WiFi Clients, before i submit for review, I like to provide some overview on the use-cases
1) Providing the Individual IP Accounting (Rx and Tx bytes) based on the tether/forward traffic between the WiFi Client and Hotspot
2) Providing the history and current usage of WiFi clients
So currently connman supports GetTetheringClients method and TetheringClientsChanged Signal
Based on the current implementation in connman, i have added client detail like following
Please comment on this.
/*****No Client connected, GetTetheringClients Method return following reply*****/
dbus-send --system --print-reply --dest=net.connman / net.connman.Manager.GetTetheringClients
method return sender=:1.25 -> dest=:1.29 reply_serial=2
array [
]
/*****New client Connected, GetTetheringClients Method return following reply*****/
dbus-send --system --print-reply --dest=net.connman / net.connman.Manager.GetTetheringClients
method return sender=:1.25 -> dest=:1.29 reply_serial=2
array [
struct {
array [
dict entry(
string "MAC"
variant string "18:01:f1:0d:80:b5"
)
dict entry(
string "IPv4"
variant string "192.168.0.2"
)
dict entry(
string "tx-bytes"
variant int32 40
)
dict entry(
string "rx-bytes"
variant int32 60
)
]
}
]
/*****Client Connected again, GetTetheringClients Method return following reply*****/
dbus-send --system --print-reply --dest=net.connman / net.connman.Manager.GetTetheringClients
method return sender=:1.25 -> dest=:1.29 reply_serial=2
array [
struct {
array [
dict entry(
string "MAC"
variant string "18:01:f1:0d:80:b5"
)
dict entry(
string "IPv4"
variant string "192.168.0.2"
)
dict entry(
string "tx-bytes"
variant int32 40
)
dict entry(
string "rx-bytes"
variant int32 60
)
dict entry(
string "History tx-bytes"
variant int32 1345
)
dict entry(
string "History rx-bytes"
variant int32 2846
)
]
}
]
/*****New client Connected, TetheringClientsChanged signal emits the following*****/
signal sender=:1.25 -> dest=(null destination) serial=92 path=/; interface=net.connman.Manager; member=TetheringClientsChanged
array [
struct {
array [
dict entry(
string "MAC"
variant string "18:01:f1:0d:80:b5"
)
dict entry(
string "IPv4"
variant string "192.168.0.2"
)
dict entry(
string "tx-bytes"
variant int32 0
)
dict entry(
string "rx-bytes"
variant int32 0
)
]
}
]
array [
]
/*****client DisConnected, TetheringClientsChanged signal emits the following*****/
signal sender=:1.25 -> dest=(null destination) serial=92 path=/; interface=net.connman.Manager; member=TetheringClientsChanged
array [
]
array [
struct {
array [
dict entry(
string "MAC"
variant string "18:01:f1:0d:80:b5"
)
dict entry(
string "History tx-bytes"
variant int32 1345
)
dict entry(
string "History rx-bytes"
variant int32 2846
)
]
}
]
/*****Client Connected again, TetheringClientsChanged signal emits the following*****/
signal sender=:1.25 -> dest=(null destination) serial=92 path=/; interface=net.connman.Manager; member=TetheringClientsChanged
array [
struct {
array [
dict entry(
string "MAC"
variant string "18:01:f1:0d:80:b5"
)
dict entry(
string "IPv4"
variant string "192.168.0.2"
)
dict entry(
string "tx-bytes"
variant int32 0
)
dict entry(
string "rx-bytes"
variant int32 0
)
]
}
]
array [
struct {
array [
dict entry(
string "MAC"
variant string "18:01:f1:0d:80:b5"
)
dict entry(
string "History tx-bytes"
variant int32 1345
)
dict entry(
string "History rx-bytes"
variant int32 2846
)
]
}
]
1 year, 4 months
Buffer overflow
by jybarnes21＠gmail.com
Hi.
I think the format_rule() function has buffer overflow vulnerability.
static void format_rule(struct filter_data *data, char *rule, size_t size)
{
const char *sender;
int offset;
offset = snprintf(rule, size, "type='signal'");
sender = data->name ? : data->owner;
if (sender)
offset += snprintf(rule + offset, size - offset,
",sender='%s'", sender);
if (data->path)
offset += snprintf(rule + offset, size - offset,
",path='%s'", data->path);
if (data->interface)
offset += snprintf(rule + offset, size - offset,
",interface='%s'", data->interface);
if (data->member)
offset += snprintf(rule + offset, size - offset,
",member='%s'", data->member);
if (data->argument)
snprintf(rule + offset, size - offset,
",arg0='%s'", data->argument);
}
snprintf returns the number of characters that would have been written if n had been sufficiently large.
If the format string is longer than the (size - offset), the snprintf will return a value larger than the (size-offset).
In normal cases, DBUS_MAXIMUM_MATCH_RULE_LENGTH(1024) is large, but an attacker can make malicious, large-scale inputs.
You can find the function in gdbus/watch.c
Thanks.
1 year, 4 months
Request for help for Input/Output error creating BNEP
by Bnà Marco
Hi all and thanks in advance to everyone that would like to help me.
My problem is related to the attempt to automatically establish a BNEP from a board ARM with Yocto and Bluez to a Windows PC.
The pairing is established successfully but I'm unable to finalize bnep creation with "connmanctl connect bluetooth_mac1_mac2".
Here is the attached log of the error.
Thanks
Marco
[Logo_NXenginee_tr_25]
Marco Bnà
Nexion Engineering S.r.l.
Via Modena 34,
42015 Correggio (RE)
Tel: (+39)0522747405
e-mail: m.bna(a)nexionengineering.com<mailto:m.bna@nexionengineering.com>
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1 year, 4 months