user: What would the C source look like for the assembly code provided here?

```asm
<cat>:
  endbr64
  push   %r15
  lea    D4(%rip),%rdi
  lea    D23(%rip),%r15
  push   %r14
  push   %r13
  push   %r12
  lea    D32(%rip),%r12
  push   %rbp
  push   %rbx
  xor    %ebx,%ebx
  sub    $0x148,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x138(%rsp)
  xor    %eax,%eax
  lea    0x10(%rsp),%r14
  lea    0xf(%rsp),%rbp
  call   <puts0@plt>
  pxor   %xmm0,%xmm0
  lea    0x30(%rsp),%rdi
  xor    %eax,%eax
  mov    $0x100,%esi
  movaps %xmm0,0x30(%rsp)
  call   <getsn@plt>
  movdqa 0x30(%rsp),%xmm1
  xor    %esi,%esi
  mov    %r14,%rdi
  xor    %eax,%eax
  movb   $0x0,0x20(%rsp)
  movaps %xmm1,0x10(%rsp)
  call   <open_@plt>
  mov    %eax,%r13d
  cmp    $0xffffffff,%eax
  je     L34
L100:
  xor    %edi,%edi
  xor    %eax,%eax
  mov    %rbp,%rsi
  call   <readc@plt>
  test   %eax,%eax
  jne    L1
L94:
  movsbl 0xf(%rsp),%edi
  cmp    $0xa,%dil
  je     L65
  xor    %eax,%eax
  call   <putch@plt>
  xor    %edi,%edi
  xor    %eax,%eax
  mov    %rbp,%rsi
  call   <readc@plt>
  test   %eax,%eax
  je     L94
L1:
  xor    %edi,%edi
  xor    %eax,%eax
  call   <close_@plt>
L47:
  mov    0x138(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L92
  add    $0x148,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopl   0x0(%rax)
L65:
  mov    %r12,%rdi
  xor    %eax,%eax
  add    $0x1,%ebx
  call   <puts0@plt>
  cmp    $0x17,%ebx
  jle    L100
  mov    %r15,%rdi
  xor    %eax,%eax
  call   <puts0@plt>
  mov    %r14,%rdi
  xor    %eax,%eax
  call   <puts0@plt>
  xor    %eax,%eax
  call   <getch@plt>
  mov    %al,0xf(%rsp)
  cmp    $0x71,%al
  je     L67
  mov    $0xd,%edi
  xor    %eax,%eax
  mov    $0x46,%ebx
  call   <putch@plt>
  xchg   %ax,%ax
L8:
  xor    %eax,%eax
  mov    $0x20,%edi
  call   <putch@plt>
  sub    $0x1,%bx
  jne    L8
  mov    $0xd,%edi
  xor    %eax,%eax
  xor    %ebx,%ebx
  call   <putch@plt>
  jmp    L100
L34:
  lea    D0(%rip),%rdi
  xor    %eax,%eax
  call   <puts0@plt>
  jmp    L47
L67:
  mov    %r13d,%edi
  xor    %eax,%eax
  call   <close_@plt>
  jmp    L47
L92:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: retrieve_data
arguments: data_label: D4
type_guessed: string
name: retrieve_data
arguments: data_label: D23
type_guessed: string
name: retrieve_data
arguments: data_label: D32
type_guessed: string
name: retrieve_data
arguments: data_label: D0
type_guessed: string

tool: D4: file ? 

tool: D23:  MORE 

tool: D32: 


tool: D0: can't open file


assistant: ```c
void cat(void) {
  unsigned short int i;
  unsigned short int j;
  unsigned short int equal;
  unsigned char filename[16 + 2];
  unsigned char str[256];
  char c;
  int rc;
  int line = 0;
  puts0("file ? ");
  for (i = 0; i < 16; i++)
    str[i] = 0;
  getsn(str, 256);
  for (i = 0; i < 16; i++)
    filename[i] = str[i];
  filename[16] = 0;
  rc = open_(filename, 0);
  if (rc != -1) {
  } else {
    puts0("can't open file\r\n");
    return;
  }
  while (readc(0, &c) == 0)
    if (c == '\n') {
      puts0("\r\n");
      if (++line > 23) {
        puts0(" MORE ");
        puts0(filename);
        c = getch();
        if (c == 'q') {
          close_(rc);
          return;
        }
        line = 0;
        putch('\r');
        for (i = 0; i < 70; i++)
          putch(' ');
        putch('\r');
      }
    } else
      putch(c);
  close_(0);
}
```