user: 请从给定的汇编指令推导出C源代码：

```asm
<main>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %edi,-0x14(%rbp)
  mov    %rsi,-0x20(%rbp)
  movl   $0x0,-0x10(%rbp)
  movq   $0x0,-0x8(%rbp)
  movl   $0x0,-0xc(%rbp)
  mov    -0x14(%rbp),%eax
  mov    %eax,%esi
  lea    D31(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  cmpl   $0x1,-0x14(%rbp)
  jne    L72
  mov    $0x0,%eax
  call   <usage@plt>
  mov    $0xffffffff,%eax
  jmp    L155
L72:
  mov    -0x20(%rbp),%rax
  add    $0x8,%rax
  mov    (%rax),%rax
  movzbl (%rax),%eax
  cmp    $0x63,%al
  jne    L53
  cmpl   $0x3,-0x14(%rbp)
  jle    L55
  cmpl   $0x4,-0x14(%rbp)
  jle    L62
L55:
  mov    $0x0,%eax
  call   <usage@plt>
  mov    $0xffffffff,%eax
  jmp    L155
L62:
  mov    -0x20(%rbp),%rax
  add    $0x10,%rax
  mov    (%rax),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  cmp    $0x20,%eax
  jle    L128
  lea    D28(%rip),%rax
  mov    %rax,%rdi
  call   <puts@plt>
  mov    $0xffffffff,%eax
  jmp    L155
L128:
  mov    -0x20(%rbp),%rax
  add    $0x18,%rax
  mov    (%rax),%rax
  mov    %rax,%rdi
  call   <c_connection@plt>
  mov    %eax,-0x10(%rbp)
  jmp    L36
L53:
  mov    -0x20(%rbp),%rax
  add    $0x8,%rax
  mov    (%rax),%rax
  movzbl (%rax),%eax
  cmp    $0x73,%al
  jne    L145
  cmpl   $0x2,-0x14(%rbp)
  jle    L117
  cmpl   $0x3,-0x14(%rbp)
  jle    L80
L117:
  mov    $0x0,%eax
  call   <usage@plt>
  mov    $0xffffffff,%eax
  jmp    L155
L80:
  mov    $0x0,%eax
  call   <s_connection@plt>
  mov    %eax,-0x10(%rbp)
  jmp    L36
L145:
  mov    $0x0,%eax
  call   <usage@plt>
  mov    $0xffffffff,%eax
  jmp    L155
L36:
  cmpl   $0x0,-0x10(%rbp)
  jle    L134
  mov    -0x20(%rbp),%rax
  add    $0x10,%rax
  mov    (%rax),%rdx
  mov    -0x10(%rbp),%eax
  mov    %rdx,%rsi
  mov    %eax,%edi
  call   <handle@plt>
  jmp    L26
L134:
  lea    D36(%rip),%rax
  mov    %rax,%rdi
  call   <puts@plt>
  lea    D17(%rip),%rax
  mov    %rax,%rdi
  call   <puts@plt>
L26:
  mov    -0x10(%rbp),%eax
  mov    %eax,%edi
  call   <close@plt>
  mov    $0x0,%eax
L155:
  leave
  ret
```

tool_calls: name: parse_data
arguments: tag: D31
type: string
name: parse_data
arguments: tag: D28
type: string
name: parse_data
arguments: tag: D36
type: string
name: parse_data
arguments: tag: D17
type: string

tool: D31: argc %d


tool: D28: [*]Error: username cannot be longer than 32 characters

tool: D36: [*]could not connect

tool: D17: [*]terminating

assistant: ```c
int main(int argc, char *argv[]) {
  int socket = 0;
  char *str = NULL;
  int size = 0;
  printf("argc %d\n", argc);
  if (argc == 1) {
    usage();
    return -1;
  }
  if (*argv[1] == 'c') {
    if (argc < 4 || argc > 4) {
      usage();
      return -1;
    }
    if (strlen(argv[2]) > 32) {
      printf("[*]Error: username cannot be longer than 32 characters\n");
      return -1;
    } else
      socket = c_connection(argv[3]);
  } else if (*argv[1] == 's') {
    if (argc < 3 || argc > 3) {
      usage();
      return -1;
    } else
      socket = s_connection();
  } else {
    usage();
    return -1;
  }
  if (socket > 0)
    handle(socket, argv[2]);
  else {
    printf("[*]could not connect\n");
    printf("[*]terminating\n");
  }
  close(socket);
  return 0;
}
```