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

```asm
<pcaNegCrypt>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x40,%rsp
  mov    %edi,-0x34(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  movabs $0xfe000900616f,%rax
  mov    %rax,-0x16(%rbp)
  movl   $0xffff,-0xe(%rbp)
  movw   $0x0,-0xa(%rbp)
  movl   $0xe,-0x24(%rbp)
  movl   $0x0,-0x28(%rbp)
  lea    D10(%rip),%rax
  mov    %rax,%rdx
  lea    D73(%rip),%rax
  mov    %rax,%rsi
  mov    $0xa,%edi
  call   <writeError@plt>
  mov    -0x24(%rbp),%edx
  lea    -0x16(%rbp),%rsi
  mov    -0x34(%rbp),%eax
  mov    $0x0,%ecx
  mov    %eax,%edi
  call   <medusaSend@plt>
  test   %rax,%rax
  jns    L35
  lea    D10(%rip),%rax
  mov    %rax,%rdx
  lea    D37(%rip),%rax
  mov    %rax,%rsi
  mov    $0x3,%edi
  call   <writeError@plt>
  mov    $0xffffffff,%eax
  jmp    L40
L35:
  movl   $0x0,-0x28(%rbp)
  lea    -0x28(%rbp),%rdx
  mov    -0x34(%rbp),%eax
  mov    %rdx,%rsi
  mov    %eax,%edi
  call   <medusaReceiveRaw@plt>
  mov    %rax,-0x20(%rbp)
  cmpq   $0x0,-0x20(%rbp)
  jne    L51
  lea    D10(%rip),%rax
  mov    %rax,%rdx
  lea    D56(%rip),%rax
  mov    %rax,%rsi
  mov    $0x3,%edi
  call   <writeError@plt>
  mov    $0xffffffff,%eax
  jmp    L40
L51:
  mov    -0x20(%rbp),%rax
  add    $0x1c,%rax
  lea    D42(%rip),%rdx
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <strstr@plt>
  test   %rax,%rax
  je     L77
  lea    D10(%rip),%rax
  mov    %rax,%rdx
  lea    D88(%rip),%rax
  mov    %rax,%rsi
  mov    $0x3,%edi
  call   <writeError@plt>
  cmpq   $0x0,-0x20(%rbp)
  je     L31
  mov    -0x20(%rbp),%rax
  mov    %rax,%rdi
  call   <free@plt>
  movq   $0x0,-0x20(%rbp)
L31:
  mov    $0xffffffff,%eax
  jmp    L40
L77:
  cmpq   $0x0,-0x20(%rbp)
  je     L3
  mov    -0x20(%rbp),%rax
  mov    %rax,%rdi
  call   <free@plt>
  movq   $0x0,-0x20(%rbp)
L3:
  mov    $0x0,%eax
L40:
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L20
  call   <__stack_chk_fail@plt>
L20:
  leave
  ret
```

tool_calls: name: unpack_data
arguments: tag: D10
type: string
name: unpack_data
arguments: tag: D73
type: string
name: unpack_data
arguments: tag: D37
type: string
name: unpack_data
arguments: tag: D56
type: string
name: unpack_data
arguments: tag: D42
type: string
name: unpack_data
arguments: tag: D88
type: string

tool: D10: pcanywhere.mod

tool: D73: %s: Checking encryption level.

tool: D37: %s failed: medusaSend was not successful

tool: D56: %s failed: medusaReceive returned no data.

tool: D42: Host is denying connection

tool: D88: %s: PcAnywhere host denied connection. Host requires encryption which is currently not supported.

assistant: ```c
int pcaNegCrypt(int hSocket) {
  unsigned char bufSend[] = {0x6f, 0x61, 0x00, 0x09, 0x00, 0xfe, 0x00, 0x00, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00};
  int nSendBufferSize = 14;
  unsigned char *bufReceive;
  int nReceiveBufferSize = 0;
  writeError(10, "%s: Checking encryption level.", "pcanywhere.mod");
  if (medusaSend(hSocket, bufSend, nSendBufferSize, 0) < 0) {
    writeError(3, "%s failed: medusaSend was not successful", "pcanywhere.mod");
    return -1;
  }
  nReceiveBufferSize = 0;
  bufReceive = medusaReceiveRaw(hSocket, &nReceiveBufferSize);
  if (bufReceive == NULL) {
    writeError(3, "%s failed: medusaReceive returned no data.", "pcanywhere.mod");
    return -1;
  } else if (strstr((char *)bufReceive + 28, "Host is denying connection")) {
    writeError(3, "%s: PcAnywhere host denied connection. Host requires encryption which is currently not supported.", "pcanywhere.mod");
    if (bufReceive != NULL) {
      free(bufReceive);
      bufReceive = NULL;
    };
    return -1;
  }
  if (bufReceive != NULL) {
    free(bufReceive);
    bufReceive = NULL;
  };
  return 0;
}
```