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

```asm
<main>:
  endbr64
  push   %r15
  xor    %edi,%edi
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x168,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x158(%rsp)
  xor    %eax,%eax
  call   <ttyname@plt>
  test   %rax,%rax
  je     L192
  mov    %rax,%rdi
  mov    %rax,%rbx
  call   <strlen@plt>
  cmp    $0x4,%eax
  jle    L192
  lea    D18(%rip),%rsi
  lea    D25(%rip),%rdi
  add    $0x5,%rbx
  call   <fopen@plt>
  mov    %rax,%rbp
  test   %rax,%rax
  je     L192
  lea    0xf0(%rsp),%r12
  jmp    L27
  nopl   (%rax)
L153:
  mov    %rbx,%rdi
  call   <strlen@plt>
  mov    %r12,%rsi
  mov    %rbx,%rdi
  mov    %eax,%edx
  call   <strncmp@plt>
  mov    %eax,%r13d
  test   %eax,%eax
  je     L245
L27:
  mov    %rbp,%rdx
  mov    $0x64,%esi
  mov    %r12,%rdi
  call   <fgets@plt>
  test   %rax,%rax
  jne    L153
  mov    %rbp,%rdi
  call   <fclose@plt>
L192:
  mov    $0xa,%r13d
L50:
  mov    0x158(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L205
  add    $0x168,%rsp
  mov    %r13d,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L245:
  mov    %rbp,%rdi
  mov    %r12,%r14
  mov    %r12,%rbx
  xor    %ebp,%ebp
  call   <fclose@plt>
  jmp    L219
  nopl   (%rax)
L289:
  cmp    $0xa,%al
  je     L250
  cmp    $0xd,%al
  jne    L176
L250:
  movb   $0x0,(%rbx)
L176:
  add    $0x1,%ebp
  add    $0x1,%rbx
L219:
  mov    %r12,%rdi
  call   <strlen@plt>
  cmp    %ebp,%eax
  jle    L128
  movzbl (%rbx),%eax
  cmp    $0x9,%al
  jne    L289
  movb   $0x20,(%rbx)
  jmp    L176
L128:
  xor    %r15d,%r15d
  jmp    L68
  nop
L237:
  add    $0x1,%r14
L68:
  mov    %r12,%rdi
  call   <strlen@plt>
  cmp    %r15d,%eax
  jle    L269
  add    $0x1,%r15d
  cmpb   $0x20,(%r14)
  jne    L237
  nopl   0x0(%rax,%rax,1)
L156:
  cmpb   $0x20,0x1(%r14)
  jne    L237
  mov    %r14,%rbx
  mov    %r15d,%ebp
  nopl   (%rax)
L145:
  mov    %r12,%rdi
  add    $0x1,%rbx
  call   <strlen@plt>
  cmp    %ebp,%eax
  jle    L156
  movzbl 0x1(%rbx),%eax
  add    $0x1,%ebp
  mov    %al,(%rbx)
  jmp    L145
L269:
  mov    %r12,%rdi
  call   <strlen@plt>
  test   %eax,%eax
  jle    L26
  xor    %r8d,%r8d
  xor    %ecx,%ecx
  mov    $0x20,%esi
  jmp    L15
  nopw   0x0(%rax,%rax,1)
L163:
  cmp    %eax,%edx
  jge    L26
L15:
  lea    0x1(%rcx),%edx
  movslq %ecx,%rdi
  mov    %edx,%ecx
  cmp    %sil,0xf0(%rsp,%rdi,1)
  jne    L163
  movb   $0x0,0xf0(%rsp,%rdi,1)
  add    $0x1,%r8d
  cmp    $0x20,%sil
  je     L177
  movslq %edx,%rdx
  movb   $0x0,0xf0(%rsp,%rdx,1)
  lea    0x1(%rcx),%edx
L177:
  movslq %edx,%rcx
  movzbl 0xf0(%rsp,%rcx,1),%esi
  cmp    $0x22,%sil
  je     L134
  mov    $0x20,%esi
L17:
  movslq %edx,%rcx
  cmpb   $0x27,0xf0(%rsp,%rcx,1)
  jne    L172
  movb   $0x0,0xf0(%rsp,%rcx,1)
  mov    $0x27,%esi
  add    $0x1,%edx
L172:
  movslq %edx,%rdi
  movslq %r8d,%r9
  mov    %edx,%ecx
  add    %r12,%rdi
  mov    %rdi,(%rsp,%r9,8)
  cmp    %eax,%edx
  jl     L15
L26:
  mov    0x10(%rsp),%rsi
  lea    D15(%rip),%rdi
  call   <printf@plt>
  jmp    L50
L134:
  movb   $0x0,0xf0(%rsp,%rcx,1)
  add    $0x1,%edx
  jmp    L17
L205:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: parse_data
arguments: data_label: D18
type_infered: string
name: parse_data
arguments: data_label: D25
type_infered: string
name: parse_data
arguments: data_label: D15
type_infered: string

tool: D18: r

tool: D25: /etc/ttys

tool: D15: %s


assistant: ```c
int main(int argc, char **argv) {
  char *ttname = ttyname(0);
  char *tn;
  FILE *ttys;
  char buffer[100];
  char found = 0;
  int j, k;
  char delim;
  char *parts[30];
  int part;
  if (!ttname)
    return 10;
  if (strlen(ttname) < 5)
    return 10;
  tn = ttname + 5;
  ttys = fopen("/etc/ttys", "r");
  if (!ttys)
    return 10;
  while (fgets(buffer, 100, ttys)) {
    if (!strncmp(tn, buffer, strlen(tn))) {
      found = 1;
      break;
    }
  }
  fclose(ttys);
  if (!found)
    return 10;
  for (j = 0; j < strlen(buffer); j++) {
    if (buffer[j] == 9)
      buffer[j] = 32;
    if (buffer[j] == 10)
      buffer[j] = 0;
    if (buffer[j] == 13)
      buffer[j] = 0;
  }
  for (j = 0; j < strlen(buffer); j++) {
    if (buffer[j] == 32) {
      while (buffer[j + 1] == 32) {
        for (k = j + 1; k < strlen(buffer); k++) {
          buffer[k] = buffer[k + 1];
        }
      }
    }
  }
  delim = ' ';
  parts[0] = buffer;
  part = 0;
  k = strlen(buffer);
  for (j = 0; j < k; j++) {
    if (buffer[j] == delim) {
      part++;
      buffer[j] = 0;
      if (delim != ' ') {
        j++;
        buffer[j] = 0;
      }
      delim = ' ';
      if (buffer[j + 1] == '"') {
        delim = '"';
        j++;
        buffer[j] = 0;
      }
      if (buffer[j + 1] == '\'') {
        delim = '\'';
        j++;
        buffer[j] = 0;
      }
      parts[part] = &(buffer[j + 1]);
    }
  }
  printf("%s\n", parts[2]);
  return 0;
}
```