user: Translate the below assembly code into C programming language:

```asm
<unimplemented>:
  endbr64
  push   %rbp
  push   %rbx
  sub    $0x418,%rsp
  mov    %edi,%ebp
  mov    %fs:0x28,%rax
  mov    %rax,0x408(%rsp)
  xor    %eax,%eax
  mov    %rsp,%rbx
  lea    D40(%rip),%rsi
  mov    %rbx,%rdi
  call   <sprintf@plt>
  mov    %rbx,%rdi
  call   <strlen@plt>
  mov    %eax,%edx
  mov    $0x0,%ecx
  mov    %rbx,%rsi
  mov    %ebp,%edi
  call   <send@plt>
  lea    D52(%rip),%rsi
  mov    %rbx,%rdi
  call   <sprintf@plt>
  mov    %rbx,%rdi
  call   <strlen@plt>
  mov    %eax,%edx
  mov    $0x0,%ecx
  mov    %rbx,%rsi
  mov    %ebp,%edi
  call   <send@plt>
  lea    D45(%rip),%rsi
  mov    %rbx,%rdi
  call   <sprintf@plt>
  mov    %rbx,%rdi
  call   <strlen@plt>
  mov    %eax,%edx
  mov    $0x0,%ecx
  mov    %rbx,%rsi
  mov    %ebp,%edi
  call   <send@plt>
  lea    D63(%rip),%rsi
  mov    %rbx,%rdi
  call   <sprintf@plt>
  mov    %rbx,%rdi
  call   <strlen@plt>
  mov    %eax,%edx
  mov    $0x0,%ecx
  mov    %rbx,%rsi
  mov    %ebp,%edi
  call   <send@plt>
  lea    D8(%rip),%rsi
  mov    %rbx,%rdi
  call   <sprintf@plt>
  mov    %rbx,%rdi
  call   <strlen@plt>
  mov    %eax,%edx
  mov    $0x0,%ecx
  mov    %rbx,%rsi
  mov    %ebp,%edi
  call   <send@plt>
  lea    D59(%rip),%rsi
  mov    %rbx,%rdi
  call   <sprintf@plt>
  mov    %rbx,%rdi
  call   <strlen@plt>
  mov    %eax,%edx
  mov    $0x0,%ecx
  mov    %rbx,%rsi
  mov    %ebp,%edi
  call   <send@plt>
  lea    D49(%rip),%rsi
  mov    %rbx,%rdi
  call   <sprintf@plt>
  mov    %rbx,%rdi
  call   <strlen@plt>
  mov    %eax,%edx
  mov    $0x0,%ecx
  mov    %rbx,%rsi
  mov    %ebp,%edi
  call   <send@plt>
  lea    D26(%rip),%rsi
  mov    %rbx,%rdi
  call   <sprintf@plt>
  mov    %rbx,%rdi
  call   <strlen@plt>
  mov    %eax,%edx
  mov    $0x0,%ecx
  mov    %rbx,%rsi
  mov    %ebp,%edi
  call   <send@plt>
  mov    0x408(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L8
  add    $0x418,%rsp
  pop    %rbx
  pop    %rbp
  ret
L8:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: unpack_data
arguments: data_label: D40
datatype: string
name: unpack_data
arguments: data_label: D52
datatype: string
name: unpack_data
arguments: data_label: D45
datatype: string
name: unpack_data
arguments: data_label: D63
datatype: string
name: unpack_data
arguments: data_label: D8
datatype: string
name: unpack_data
arguments: data_label: D59
datatype: string
name: unpack_data
arguments: data_label: D49
datatype: string
name: unpack_data
arguments: data_label: D26
datatype: string

tool: D40: HTTP/1.0 501 Method Not Implemented


tool: D52: Server: httpd/0.1.0


tool: D45: Content-Type: Text/html


tool: D63: 


tool: D8: <HTML><HEAD><TITLE>Method Not Implemented


tool: D59: </TITLE></HEAD>


tool: D49: <BODY> <p>HTTP request method not  supported.


tool: D26: </BODY></HTML>


assistant: ```c
void unimplemented(int client) {
  char buf[1024];
  sprintf(buf, "HTTP/1.0 501 Method Not Implemented\r\n");
  send(client, buf, strlen(buf), 0);
  sprintf(buf, "Server: httpd/0.1.0\r\n");
  send(client, buf, strlen(buf), 0);
  sprintf(buf, "Content-Type: Text/html\r\n");
  send(client, buf, strlen(buf), 0);
  sprintf(buf, "\r\n");
  send(client, buf, strlen(buf), 0);
  sprintf(buf, "<HTML><HEAD><TITLE>Method Not Implemented\r\n");
  send(client, buf, strlen(buf), 0);
  sprintf(buf, "</TITLE></HEAD>\r\n");
  send(client, buf, strlen(buf), 0);
  sprintf(buf, "<BODY> <p>HTTP request method not  supported.\r\n");
  send(client, buf, strlen(buf), 0);
  sprintf(buf, "</BODY></HTML>\r\n");
  send(client, buf, strlen(buf), 0);
}
```