user: What is the c source code of the assembly code below:

```asm
<main>:
  endbr64
  push   %r13
  push   %r12
  push   %rbp
  lea    D37(%rip),%rbp
  mov    %rbp,%rdi
  call   <check_file_size@plt>
  test   %rax,%rax
  js     L8
  lea    D79(%rip),%r12
  mov    %r12,%rdi
  call   <check_file_size@plt>
  test   %rax,%rax
  js     L8
  lea    D124(%rip),%r13
  mov    %r13,%rdi
  call   <check_file_size@plt>
  test   %rax,%rax
  js     L8
  lea    D35(%rip),%rdi
  call   <check_file_size@plt>
  test   %rax,%rax
  js     L8
  mov    %rbp,%rdi
  lea    D67(%rip),%rsi
  lea    D82(%rip),%rbp
  call   <copy_file@plt>
  lea    D26(%rip),%rsi
  mov    %r12,%rdi
  call   <copy_file@plt>
  mov    %rbp,%rsi
  mov    %r13,%rdi
  call   <copy_file@plt>
  mov    %rbp,%rdi
  mov    $0x1ed,%esi
  lea    D110(%rip),%rbp
  call   <chmod@plt>
  mov    %rbp,%rdi
  call   <check_file_size@plt>
  test   %rax,%rax
  je     L47
L32:
  mov    %rbp,%rdi
  call   <unlink@plt>
  lea    D132(%rip),%rdi
  call   <chdir@plt>
  lea    D133(%rip),%rdi
  call   <unlink@plt>
  lea    D71(%rip),%rdi
  call   <unlink@plt>
  lea    D92(%rip),%rdi
  call   <unlink@plt>
  lea    D86(%rip),%rdi
  call   <extract_tar_file@plt>
  xor    %eax,%eax
L45:
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
L47:
  lea    D135(%rip),%rsi
  mov    %rbp,%rdi
  call   <copy_file@plt>
  jmp    L32
L8:
  or     $0xffffffff,%eax
  jmp    L45
```

tool_calls: name: retrieve_data
arguments: label: D37
data_type: string
name: retrieve_data
arguments: label: D79
data_type: string
name: retrieve_data
arguments: label: D124
data_type: string
name: retrieve_data
arguments: label: D35
data_type: string
name: retrieve_data
arguments: label: D67
data_type: string
name: retrieve_data
arguments: label: D82
data_type: string
name: retrieve_data
arguments: label: D26
data_type: string
name: retrieve_data
arguments: label: D110
data_type: string
name: retrieve_data
arguments: label: D132
data_type: string
name: retrieve_data
arguments: label: D133
data_type: string
name: retrieve_data
arguments: label: D71
data_type: string
name: retrieve_data
arguments: label: D92
data_type: string
name: retrieve_data
arguments: label: D86
data_type: string
name: retrieve_data
arguments: label: D135
data_type: string

tool: D37: looper2.ko

tool: D79: spi.ko

tool: D124: userif

tool: D35: lp1-www.tar

tool: D67: /j/looper2.ko

tool: D82: /j/userif

tool: D26: /j/spi.ko

tool: D110: uImage

tool: D132: /j

tool: D133: html/testpage.html

tool: D71: html/upgrade.html

tool: D92: cgi-bin/test.cgi

tool: D86: /mnt/lp1-www.tar

tool: D135: /dev/mtdblock1

assistant: ```c
int main(int argc, char **argv) {
  if (check_file_size("looper2.ko") < 0 || check_file_size("spi.ko") < 0 || check_file_size("userif") < 0 || check_file_size("lp1-www.tar") < 0) {
    return -1;
  }
  copy_file("looper2.ko", "/j/looper2.ko");
  copy_file("spi.ko", "/j/spi.ko");
  copy_file("userif", "/j/userif");
  chmod("/j/userif", 0755);
  if (check_file_size("uImage") == 0) {
    copy_file("uImage", "/dev/mtdblock1");
  }
  unlink("uImage");
  chdir("/j");
  unlink("html/testpage.html");
  unlink("html/upgrade.html");
  unlink("cgi-bin/test.cgi");
  extract_tar_file("/mnt/lp1-www.tar");
  return 0;
}
```