user: Please show me the C implementation that matches the assembly code listed below:

```asm
<main>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x60,%rsp
  mov    %edi,-0x54(%rbp)
  mov    %rsi,-0x60(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  cmpl   $0x2,-0x54(%rbp)
  jg     L251
  lea    D46(%rip),%rax
  mov    %rax,%rdi
  call   <puts@plt>
  mov    $0xffffffff,%eax
  jmp    L99
L251:
  mov    -0x60(%rbp),%rax
  add    $0x8,%rax
  mov    (%rax),%rax
  lea    D136(%rip),%rdx
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  jne    L124
  cmpl   $0x4,-0x54(%rbp)
  je     L137
  lea    D161(%rip),%rax
  mov    %rax,%rdi
  call   <puts@plt>
  mov    $0xffffffff,%eax
  jmp    L99
L137:
  mov    -0x60(%rbp),%rax
  add    $0x10,%rax
  mov    (%rax),%rax
  lea    D65(%rip),%rdx
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <fopen@plt>
  mov    %rax,-0x28(%rbp)
  cmpq   $0x0,-0x28(%rbp)
  jne    L172
  mov    -0x60(%rbp),%rax
  add    $0x10,%rax
  mov    (%rax),%rax
  mov    %rax,%rsi
  lea    D51(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0xffffffff,%eax
  jmp    L99
L172:
  mov    -0x28(%rbp),%rax
  mov    $0x2,%edx
  mov    $0x0,%esi
  mov    %rax,%rdi
  call   <fseek@plt>
  mov    -0x28(%rbp),%rax
  mov    %rax,%rdi
  call   <ftell@plt>
  mov    %eax,-0x44(%rbp)
  mov    -0x28(%rbp),%rax
  mov    $0x0,%edx
  mov    $0x0,%esi
  mov    %rax,%rdi
  call   <fseek@plt>
  mov    -0x44(%rbp),%eax
  mov    %eax,%edi
  call   <malloc@plt>
  mov    %rax,-0x20(%rbp)
  mov    -0x44(%rbp),%eax
  mov    %eax,%edi
  call   <malloc@plt>
  mov    %rax,-0x18(%rbp)
  mov    -0x28(%rbp),%rcx
  mov    -0x44(%rbp),%edx
  mov    -0x20(%rbp),%rax
  mov    $0x1,%esi
  mov    %rax,%rdi
  call   <fread@plt>
  mov    -0x28(%rbp),%rax
  mov    %rax,%rdi
  call   <fclose@plt>
  movl   $0x0,-0x50(%rbp)
  jmp    L32
L30:
  mov    -0x50(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x20(%rbp),%rax
  add    %rdx,%rax
  mov    -0x50(%rbp),%edx
  movslq %edx,%rcx
  mov    -0x18(%rbp),%rdx
  add    %rcx,%rdx
  movzbl (%rax),%eax
  mov    %al,(%rdx)
  addl   $0x1,-0x50(%rbp)
L32:
  mov    -0x50(%rbp),%eax
  cmp    %eax,-0x44(%rbp)
  ja     L30
  mov    -0x44(%rbp),%edx
  mov    -0x18(%rbp),%rcx
  mov    -0x20(%rbp),%rax
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <encrypt@plt>
  mov    -0x60(%rbp),%rax
  add    $0x18,%rax
  mov    (%rax),%rax
  lea    D9(%rip),%rdx
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <fopen@plt>
  mov    %rax,-0x28(%rbp)
  cmpq   $0x0,-0x28(%rbp)
  jne    L323
  mov    -0x60(%rbp),%rax
  add    $0x10,%rax
  mov    (%rax),%rax
  mov    %rax,%rsi
  lea    D8(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0xffffffff,%eax
  jmp    L99
L323:
  movl   $0x1020304,-0xc(%rbp)
  mov    -0x28(%rbp),%rdx
  lea    -0xc(%rbp),%rax
  mov    %rdx,%rcx
  mov    $0x4,%edx
  mov    $0x1,%esi
  mov    %rax,%rdi
  call   <fwrite@plt>
  mov    -0x28(%rbp),%rcx
  mov    -0x44(%rbp),%edx
  mov    -0x18(%rbp),%rax
  mov    $0x1,%esi
  mov    %rax,%rdi
  call   <fwrite@plt>
  mov    -0x28(%rbp),%rax
  mov    %rax,%rdi
  call   <fclose@plt>
  jmp    L290
L124:
  mov    -0x60(%rbp),%rax
  add    $0x8,%rax
  mov    (%rax),%rax
  lea    D105(%rip),%rdx
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  jne    L58
  cmpl   $0x4,-0x54(%rbp)
  je     L175
  lea    D73(%rip),%rax
  mov    %rax,%rdi
  call   <puts@plt>
  mov    $0xffffffff,%eax
  jmp    L99
L175:
  mov    -0x60(%rbp),%rax
  add    $0x10,%rax
  mov    (%rax),%rax
  lea    D65(%rip),%rdx
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <fopen@plt>
  mov    %rax,-0x40(%rbp)
  cmpq   $0x0,-0x40(%rbp)
  jne    L265
  mov    -0x60(%rbp),%rax
  add    $0x10,%rax
  mov    (%rax),%rax
  mov    %rax,%rsi
  lea    D51(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0xffffffff,%eax
  jmp    L99
L265:
  mov    -0x40(%rbp),%rax
  mov    $0x2,%edx
  mov    $0x0,%esi
  mov    %rax,%rdi
  call   <fseek@plt>
  mov    -0x40(%rbp),%rax
  mov    %rax,%rdi
  call   <ftell@plt>
  mov    %eax,-0x48(%rbp)
  mov    -0x40(%rbp),%rax
  mov    $0x0,%edx
  mov    $0x0,%esi
  mov    %rax,%rdi
  call   <fseek@plt>
  cmpl   $0x4,-0x48(%rbp)
  ja     L247
  mov    -0x60(%rbp),%rax
  add    $0x10,%rax
  mov    (%rax),%rax
  mov    %rax,%rsi
  lea    D64(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    -0x40(%rbp),%rax
  mov    %rax,%rdi
  call   <fclose@plt>
  mov    $0xffffffff,%eax
  jmp    L99
L247:
  mov    -0x48(%rbp),%eax
  mov    %eax,%edi
  call   <malloc@plt>
  mov    %rax,-0x38(%rbp)
  mov    -0x48(%rbp),%eax
  sub    $0x4,%eax
  mov    %eax,%edi
  call   <malloc@plt>
  mov    %rax,-0x30(%rbp)
  mov    -0x40(%rbp),%rcx
  mov    -0x48(%rbp),%edx
  mov    -0x38(%rbp),%rax
  mov    $0x1,%esi
  mov    %rax,%rdi
  call   <fread@plt>
  mov    -0x40(%rbp),%rax
  mov    %rax,%rdi
  call   <fclose@plt>
  mov    -0x38(%rbp),%rax
  movzbl (%rax),%eax
  cmp    $0x1,%al
  je     L23
  mov    -0x38(%rbp),%rax
  movzbl (%rax),%eax
  cmp    $0x2,%al
  je     L23
  mov    -0x38(%rbp),%rax
  movzbl (%rax),%eax
  cmp    $0x3,%al
  je     L23
  mov    -0x38(%rbp),%rax
  movzbl (%rax),%eax
  cmp    $0x4,%al
  je     L23
  mov    -0x60(%rbp),%rax
  add    $0x10,%rax
  mov    (%rax),%rax
  mov    %rax,%rsi
  lea    D5(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0xffffffff,%eax
  jmp    L99
L23:
  addq   $0x4,-0x38(%rbp)
  subl   $0x4,-0x48(%rbp)
  movl   $0x0,-0x4c(%rbp)
  jmp    L132
L5:
  mov    -0x4c(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  mov    -0x4c(%rbp),%edx
  movslq %edx,%rcx
  mov    -0x30(%rbp),%rdx
  add    %rcx,%rdx
  movzbl (%rax),%eax
  mov    %al,(%rdx)
  addl   $0x1,-0x4c(%rbp)
L132:
  mov    -0x4c(%rbp),%eax
  cmp    %eax,-0x48(%rbp)
  ja     L5
  mov    -0x48(%rbp),%edx
  mov    -0x30(%rbp),%rcx
  mov    -0x38(%rbp),%rax
  mov    %rcx,%rsi
  mov    %rax,%rdi
  call   <decrypt@plt>
  mov    -0x60(%rbp),%rax
  add    $0x18,%rax
  mov    (%rax),%rax
  lea    D9(%rip),%rdx
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <fopen@plt>
  mov    %rax,-0x40(%rbp)
  cmpq   $0x0,-0x40(%rbp)
  jne    L65
  mov    -0x60(%rbp),%rax
  add    $0x10,%rax
  mov    (%rax),%rax
  mov    %rax,%rsi
  lea    D8(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0xffffffff,%eax
  jmp    L99
L65:
  mov    -0x40(%rbp),%rcx
  mov    -0x48(%rbp),%edx
  mov    -0x30(%rbp),%rax
  mov    $0x1,%esi
  mov    %rax,%rdi
  call   <fwrite@plt>
  mov    -0x40(%rbp),%rax
  mov    %rax,%rdi
  call   <fclose@plt>
  jmp    L290
L58:
  mov    -0x60(%rbp),%rax
  add    $0x8,%rax
  mov    (%rax),%rax
  lea    D28(%rip),%rdx
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  je     L290
  mov    -0x60(%rbp),%rax
  add    $0x8,%rax
  mov    (%rax),%rax
  lea    D29(%rip),%rdx
  mov    %rdx,%rsi
  mov    %rax,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  je     L290
  mov    -0x60(%rbp),%rax
  add    $0x8,%rax
  mov    (%rax),%rax
  mov    %rax,%rsi
  lea    D103(%rip),%rax
  mov    %rax,%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    $0xffffffff,%eax
  jmp    L99
L290:
  mov    $0x0,%eax
L99:
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L269
  call   <__stack_chk_fail@plt>
L269:
  leave
  ret
```

tool_calls: name: retrieve_data
arguments: data_label: D46
datatype: string
name: retrieve_data
arguments: data_label: D136
datatype: string
name: retrieve_data
arguments: data_label: D161
datatype: string
name: retrieve_data
arguments: data_label: D65
datatype: string
name: retrieve_data
arguments: data_label: D51
datatype: string
name: retrieve_data
arguments: data_label: D9
datatype: string
name: retrieve_data
arguments: data_label: D8
datatype: string
name: retrieve_data
arguments: data_label: D105
datatype: string
name: retrieve_data
arguments: data_label: D73
datatype: string
name: retrieve_data
arguments: data_label: D64
datatype: string
name: retrieve_data
arguments: data_label: D5
datatype: string
name: retrieve_data
arguments: data_label: D28
datatype: string
name: retrieve_data
arguments: data_label: D29
datatype: string
name: retrieve_data
arguments: data_label: D103
datatype: string

tool: D46: Expected prog_name option filename

tool: D136: encrypt

tool: D161: Expected: prog_name encrypt input output

tool: D65: rb

tool: D51: Could not open input file %s, exiting now


tool: D9: wb

tool: D8: Could not open output file %s, exiting now


tool: D105: decrypt

tool: D73: Expected: prog_name decrypt input output

tool: D64: File %s is too small


tool: D5: File %s is not encrypted


tool: D28: archive

tool: D29: unarchive

tool: D103: Unrecognized option: %s, available options are:
	encrypt
	decrypt
	archive
	unarchive


assistant: ```c
int main(int argc, char *argv[]) {
  if (argc < 3) {
    printf("Expected prog_name option filename\n");
    return -1;
  }
  if (strcmp(argv[1], "encrypt") == 0) {
    if (argc != 4) {
      printf("Expected: prog_name encrypt input output\n");
      return -1;
    }
    FILE *filep;
    filep = fopen(argv[2], "rb");
    unsigned int file_length;
    unsigned char *buffer;
    unsigned char *buffer2;
    if (filep == NULL) {
      printf("Could not open input file %s, exiting now\n", argv[2]);
      return -1;
    }
    fseek(filep, 0, 2);
    file_length = ftell(filep);
    fseek(filep, 0, 0);
    buffer = malloc(file_length * sizeof(unsigned char));
    buffer2 = malloc(file_length * sizeof(unsigned char));
    fread(buffer, sizeof(unsigned char), file_length, filep);
    fclose(filep);
    int count;
    for (count = 0; count < file_length; count++) {
      buffer2[count] = buffer[count];
    }
    encrypt(buffer, buffer2, file_length);
    filep = fopen(argv[3], "wb");
    if (filep == NULL) {
      printf("Could not open output file %s, exiting now\n", argv[2]);
      return -1;
    }
    unsigned char buf2[] = {4, 3, 2, 1};
    fwrite(buf2, sizeof(unsigned char), 4, filep);
    fwrite(buffer2, sizeof(unsigned char), file_length, filep);
    fclose(filep);
  } else if (strcmp(argv[1], "decrypt") == 0) {
    if (argc != 4) {
      printf("Expected: prog_name decrypt input output\n");
      return -1;
    }
    FILE *filep;
    filep = fopen(argv[2], "rb");
    unsigned int file_length;
    unsigned char *buffer;
    unsigned char *buffer2;
    if (filep == NULL) {
      printf("Could not open input file %s, exiting now\n", argv[2]);
      return -1;
    }
    fseek(filep, 0, 2);
    file_length = ftell(filep);
    fseek(filep, 0, 0);
    if (file_length <= 4) {
      printf("File %s is too small\n", argv[2]);
      fclose(filep);
      return -1;
    }
    buffer = malloc(file_length * sizeof(unsigned char));
    buffer2 = malloc((file_length - 4) * sizeof(unsigned char));
    fread(buffer, sizeof(unsigned char), file_length, filep);
    fclose(filep);
    if ((buffer[0] != 1) && (buffer[0] != 2) && (buffer[0] != 3) && (buffer[0] != 4)) {
      printf("File %s is not encrypted\n", argv[2]);
      return -1;
    }
    buffer = &buffer[4];
    file_length -= 4;
    int count;
    for (count = 0; count < file_length; count++) {
      buffer2[count] = buffer[count];
    }
    decrypt(buffer, buffer2, file_length);
    filep = fopen(argv[3], "wb");
    if (filep == NULL) {
      printf("Could not open output file %s, exiting now\n", argv[2]);
      return -1;
    }
    fwrite(buffer2, sizeof(unsigned char), file_length, filep);
    fclose(filep);
  } else if (strcmp(argv[1], "archive") == 0) {
  } else if (strcmp(argv[1], "unarchive") == 0) {
  } else {
    printf("Unrecognized option: %s, available options are:\n\tencrypt\n\tdecrypt\n\tarchive\n\tunarchive\n", argv[1]);
    return -1;
  }
}
```