user: 下面的汇编指令对应的C源代码是什么：

```asm
<check_scheduled_time>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x28,%rsp
  mov    %rdi,%rbx
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  xor    %eax,%eax
  call   <strlen@plt>
  cmp    $0xe,%eax
  jne    L135
  lea    0x13(%rsp),%r15
  mov    $0x4,%edx
  mov    %rbx,%rsi
  mov    %r15,%rdi
  call   <strncpy@plt>
  movb   $0x0,0x17(%rsp)
  lea    0x4(%rbx),%rsi
  lea    0x4(%rsp),%r14
  mov    $0x2,%edx
  mov    %r14,%rdi
  call   <strncpy@plt>
  movb   $0x0,0x6(%rsp)
  lea    0x6(%rbx),%rsi
  lea    0x7(%rsp),%r13
  mov    $0x2,%edx
  mov    %r13,%rdi
  call   <strncpy@plt>
  movb   $0x0,0x9(%rsp)
  lea    0x8(%rbx),%rsi
  lea    0xa(%rsp),%r12
  mov    $0x2,%edx
  mov    %r12,%rdi
  call   <strncpy@plt>
  movb   $0x0,0xc(%rsp)
  lea    0xa(%rbx),%rsi
  lea    0xd(%rsp),%rbp
  mov    $0x2,%edx
  mov    %rbp,%rdi
  call   <strncpy@plt>
  movb   $0x0,0xf(%rsp)
  lea    0xc(%rbx),%rsi
  lea    0x10(%rsp),%rbx
  mov    $0x2,%edx
  mov    %rbx,%rdi
  call   <strncpy@plt>
  movb   $0x0,0x12(%rsp)
  mov    %r15,%rdi
  call   <atoi@plt>
  mov    %eax,%r15d
  mov    %r14,%rdi
  call   <atoi@plt>
  mov    %eax,%r14d
  mov    %r13,%rdi
  call   <atoi@plt>
  mov    %eax,%r13d
  mov    %r12,%rdi
  call   <atoi@plt>
  mov    %eax,%r12d
  mov    %rbp,%rdi
  call   <atoi@plt>
  mov    %eax,%ebp
  mov    %rbx,%rdi
  call   <atoi@plt>
  mov    %eax,%edx
  lea    -0x7b2(%r15),%eax
  cmp    $0x82,%eax
  ja     L247
  lea    -0x1(%r14),%eax
  cmp    $0xb,%eax
  ja     L105
  lea    -0x1(%r13),%eax
  cmp    $0x1e,%eax
  ja     L200
  cmp    $0x2,%r14d
  je     L140
  cmp    $0xb,%r14d
  ja     L97
  mov    $0xa50,%eax
  bt     %r14,%rax
  jae    L97
  cmp    $0x1e,%r13d
  jg     L212
L97:
  cmp    $0x17,%r12d
  ja     L50
  cmp    $0x3b,%ebp
  ja     L199
  cmp    $0x3b,%edx
  seta   %al
  movzbl %al,%eax
  neg    %eax
L183:
  mov    0x18(%rsp),%rdx
  sub    %fs:0x28,%rdx
  jne    L83
  add    $0x28,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L140:
  test   $0x3,%r15b
  jne    L203
  movslq %r15d,%rax
  imul   $0x51eb851f,%rax,%rax
  sar    $0x25,%rax
  mov    %r15d,%ecx
  sar    $0x1f,%ecx
  sub    %ecx,%eax
  imul   $0x64,%eax,%eax
  cmp    %eax,%r15d
  jne    L194
  movslq %r15d,%rax
  imul   $0x51eb851f,%rax,%rax
  sar    $0x27,%rax
  mov    %r15d,%ecx
  sar    $0x1f,%ecx
  sub    %ecx,%eax
  imul   $0x190,%eax,%eax
  cmp    %eax,%r15d
  sete   %al
  movzbl %al,%eax
  je     L207
  cmp    $0x1c,%r13d
  jle    L207
  mov    $0xffffffff,%eax
  jmp    L183
L194:
  mov    $0x1,%eax
L207:
  test   %eax,%eax
  je     L97
  cmp    $0x1d,%r13d
  jle    L97
  mov    $0xffffffff,%eax
  jmp    L183
L135:
  mov    $0xffffffff,%eax
  jmp    L183
L247:
  mov    $0xffffffff,%eax
  jmp    L183
L105:
  mov    $0xffffffff,%eax
  jmp    L183
L200:
  mov    $0xffffffff,%eax
  jmp    L183
L212:
  mov    $0xffffffff,%eax
  jmp    L183
L50:
  mov    $0xffffffff,%eax
  jmp    L183
L199:
  mov    $0xffffffff,%eax
  jmp    L183
L203:
  cmp    $0x1c,%r13d
  jle    L97
  mov    $0xffffffff,%eax
  jmp    L183
L83:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int check_scheduled_time(char *data) {
  int size, i_year, i_mon, i_day, i_hour, i_min, i_sec, val, leap_year;
  char year[5], mon[3], day[3], hour[3], min[3], sec[3];
  size = strlen(data);
  if (size != 14) {
    return -1;
  }
  strncpy(year, data, 4);
  year[4] = '\0';
  strncpy(mon, (data + 4), 2);
  mon[2] = '\0';
  strncpy(day, (data + 6), 2);
  day[2] = '\0';
  strncpy(hour, (data + 8), 2);
  hour[2] = '\0';
  strncpy(min, (data + 10), 2);
  min[2] = '\0';
  strncpy(sec, (data + 12), 2);
  sec[2] = '\0';
  i_year = atoi(year);
  i_mon = atoi(mon);
  i_day = atoi(day);
  i_hour = atoi(hour);
  i_min = atoi(min);
  i_sec = atoi(sec);
  if (i_year < 1970 || i_year > 2100) {
    return -1;
  }
  if (i_mon < 1 || i_mon > 12) {
    return -1;
  }
  if (i_day < 1 || i_day > 31) {
    return -1;
  }
  if (i_mon == 2) {
    if ((val = i_year % 4) == 0) {
      leap_year = 1;
      if ((val = i_year % 100) == 0) {
        leap_year = 0;
        if ((val = i_year % 400) == 0) {
          leap_year = 1;
        }
      }
    } else {
      leap_year = 0;
    }
    if (leap_year == 0 && i_day > 28) {
      return -1;
    }
    if (leap_year == 1 && i_day > 29) {
      return -1;
    }
  }
  if (i_mon == 4 || i_mon == 6 || i_mon == 9 || i_mon == 11) {
    if (i_day > 30) {
      return -1;
    }
  }
  if (i_hour < 0 || i_hour > 23) {
    return -1;
  }
  if (i_min < 0 || i_min > 59) {
    return -1;
  }
  if (i_sec < 0 || i_sec > 59) {
    return -1;
  }
  return 0;
}
```