user: 请将以下的汇编代码转换成C语言代码：

```asm
<respond_with_index>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x50,%rsp
  mov    %edi,-0x44(%rbp)
  movl   $0x0,-0x34(%rbp)
  lea    D8(%rip),%rax
  mov    %rax,%rdi
  call   <generate_index@plt>
  mov    %rax,-0x30(%rbp)
  cmpq   $0x0,-0x30(%rbp)
  jne    L48
  mov    -0x44(%rbp),%eax
  mov    %eax,%edi
  call   <respond_with_500@plt>
  jmp    L21
L48:
  movq   $0x0,-0x28(%rbp)
  lea    D19(%rip),%rax
  mov    %rax,-0x20(%rbp)
  mov    -0x20(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  add    %rax,-0x28(%rbp)
  mov    -0x30(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  mov    %rax,-0x18(%rbp)
  mov    -0x18(%rbp),%rax
  add    %rax,-0x28(%rbp)
  mov    -0x18(%rbp),%rax
  mov    %rax,%rdi
  call   <numlength@plt>
  add    %rax,-0x28(%rbp)
  mov    -0x18(%rbp),%rax
  mov    %rax,%rdi
  call   <content_length_line@plt>
  mov    %rax,-0x10(%rbp)
  cmpq   $0x0,-0x10(%rbp)
  jne    L10
  movl   $0xffffffff,-0x34(%rbp)
  jmp    L25
L10:
  mov    -0x10(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  add    %rax,-0x28(%rbp)
  mov    -0x28(%rbp),%rax
  mov    %rax,%rdi
  call   <malloc@plt>
  mov    %rax,-0x8(%rbp)
  mov    -0x30(%rbp),%rsi
  mov    -0x10(%rbp),%rcx
  mov    -0x20(%rbp),%rdx
  mov    -0x8(%rbp),%rax
  mov    %rsi,%r8
  lea    D14(%rip),%rsi
  mov    %rax,%rdi
  call   <sprintf@plt>
  cmp    $0xffffffff,%eax
  jne    L53
  movl   $0xffffffff,-0x34(%rbp)
  jmp    L0
L53:
  mov    -0x8(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  mov    %rax,%rdx
  mov    -0x8(%rbp),%rsi
  mov    -0x44(%rbp),%eax
  mov    $0x0,%ecx
  mov    %eax,%edi
  call   <send@plt>
  cmp    $0xffffffff,%eax
  jne    L2
  movl   $0xffffffff,-0x34(%rbp)
  jmp    L0
L2:
  nop
L0:
  mov    -0x8(%rbp),%rax
  mov    %rax,%rdi
  call   <free@plt>
  mov    -0x10(%rbp),%rax
  mov    %rax,%rdi
  call   <free@plt>
L25:
  mov    -0x30(%rbp),%rax
  mov    %rax,%rdi
  call   <free@plt>
  mov    -0x34(%rbp),%eax
L21:
  leave
  ret
```

tool_calls: name: read_data
arguments: data_label: D8
type_infered: string
name: read_data
arguments: data_label: D19
type_infered: string
name: read_data
arguments: data_label: D14
type_infered: string

tool: D8: .

tool: D19: HTTP/1.1 200 OK


tool: D14: %s%s
%s

assistant: ```c
int respond_with_index(int connfd) {
  int rval = 0;
  long message_size;
  char *message;
  char *status;
  char *content_length;
  off_t filesize;
  char *string = generate_index(".");
  if (string == NULL) {
    return respond_with_500(connfd);
  }
  message_size = 0;
  status = "HTTP/1.1 200 OK\n";
  message_size += strlen(status);
  filesize = strlen(string);
  message_size += filesize;
  message_size += numlength(filesize);
  if ((content_length = content_length_line(filesize)) == NULL) {
    rval = -1;
    goto end;
  }
  message_size += strlen(content_length);
  message = malloc(message_size * sizeof(char));
  if (sprintf(message, "%s%s\n%s", status, content_length, string) == -1) {
    rval = -1;
    goto out;
  }
  if (send(connfd, message, strlen(message), 0) == -1) {
    rval = -1;
    goto out;
  }
out:
  free(message);
  free(content_length);
end:
  free(string);
  return rval;
}
```