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| author | Susant Sahani <ssahani@vmware.com> | 2019-09-18 15:22:47 +0200 |
|---|---|---|
| committer | Yu Watanabe <watanabe.yu+github@gmail.com> | 2019-09-20 14:22:23 +0200 |
| commit | 299d578f7f5bd1ec9f5506388821ef4bd71866e8 (patch) | |
| tree | 0f0858d3b0be5c89eb1ec62fc2e9fa45b341e9ae /src/libsystemd-network/dhcp-option.c | |
| parent | network dhcp4: Add support send request options in a generic manner (diff) | |
| download | systemd-299d578f7f5bd1ec9f5506388821ef4bd71866e8.tar.xz systemd-299d578f7f5bd1ec9f5506388821ef4bd71866e8.zip | |
network: DHCP server Add support to transmit SIP server
1. DHCP server trasmit
2. Client parses and saves in leases
Implements http://www.rfc-editor.org/rfc/rfc3361.txt
```
Frame 134: 348 bytes on wire (2784 bits), 348 bytes captured (2784 bits) on interface 0
Ethernet II, Src: 42:65:85:d6:4e:32 (42:65:85:d6:4e:32), Dst: 1e:04:f8:b8:2f:d4 (1e:04:f8:b8:2f:d4)
Internet Protocol Version 4, Src: 192.168.5.1, Dst: 192.168.5.11
User Datagram Protocol, Src Port: 67, Dst Port: 68
Dynamic Host Configuration Protocol (ACK)
Message type: Boot Reply (2)
Hardware type: Ethernet (0x01)
Hardware address length: 6
Hops: 0
Transaction ID: 0x7cc87cb4
Seconds elapsed: 0
Bootp flags: 0x0000 (Unicast)
Client IP address: 0.0.0.0
Your (client) IP address: 192.168.5.11
Next server IP address: 0.0.0.0
Relay agent IP address: 0.0.0.0
Client MAC address: 1e:04:f8:b8:2f:d4 (1e:04:f8:b8:2f:d4)
Client hardware address padding: 00000000000000000000
Server host name not given
Boot file name not given
Magic cookie: DHCP
Option: (53) DHCP Message Type (ACK)
Length: 1
DHCP: ACK (5)
Option: (51) IP Address Lease Time
Length: 4
IP Address Lease Time: (3600s) 1 hour
Option: (1) Subnet Mask (255.255.255.0)
Length: 4
Subnet Mask: 255.255.255.0
Option: (3) Router
Length: 4
Router: 192.168.5.1
Option: (6) Domain Name Server
Length: 4
Domain Name Server: 192.168.5.1
Option: (42) Network Time Protocol Servers
Length: 4
Network Time Protocol Server: 192.168.1.1
Option: (120) SIP Servers <=====here
Length: 9
SIP Server Encoding: IPv4 Address (1)
SIP Server Address: 192.168.1.1
SIP Server Address: 192.168.5.2
Option: (101) TCode
Length: 13
TZ TCode: Europe/Berlin
Option: (54) DHCP Server Identifier (192.168.5.1)
Length: 4
DHCP Server Identifier: 192.168.5.1
Option: (255) End
Option End: 255
```
```
cat /run/systemd/netif/state ✔ ⚡ 3148 16:40:51
OPER_STATE=routable
CARRIER_STATE=carrier
ADDRESS_STATE=routable
DNS=192.168.94.2 192.168.5.1
NTP=192.168.5.1
SIP=192.168.1.1 192.168.5.2
```
aa
Diffstat (limited to 'src/libsystemd-network/dhcp-option.c')
| -rw-r--r-- | src/libsystemd-network/dhcp-option.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/libsystemd-network/dhcp-option.c b/src/libsystemd-network/dhcp-option.c index 05386b615d..d2f1f5d806 100644 --- a/src/libsystemd-network/dhcp-option.c +++ b/src/libsystemd-network/dhcp-option.c @@ -65,6 +65,18 @@ static int option_append(uint8_t options[], size_t size, size_t *offset, break; } + case SD_DHCP_OPTION_SIP_SERVER: + if (*offset + 3 + optlen > size) + return -ENOBUFS; + + options[*offset] = code; + options[*offset + 1] = optlen + 1; + options[*offset + 2] = 1; + + memcpy_safe(&options[*offset + 3], optval, optlen); + *offset += 3 + optlen; + + break; default: if (*offset + 2 + optlen > size) return -ENOBUFS; |