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

```asm
<main>:
  endbr64
  push   %rbp
  mov    $0x80,%edi
  sub    $0x50,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x48(%rsp)
  xor    %eax,%eax
  call   <malloc@plt>
  mov    $0x8,%esi
  lea    D69(%rip),%rdi
  mov    %rax,%rbp
  xor    %eax,%eax
  call   <printf@plt>
  mov    %rbp,%rdi
  call   <strlen@plt>
  lea    D63(%rip),%rdi
  mov    %eax,%esi
  xor    %eax,%eax
  call   <printf@plt>
  mov    %rbp,%rsi
  lea    D133(%rip),%rdi
  mov    %rsp,%rbp
  call   <helper@plt>
  mov    $0x40,%esi
  lea    D43(%rip),%rdi
  xor    %eax,%eax
  call   <printf@plt>
  mov    %rbp,%rdi
  call   <strlen@plt>
  lea    D73(%rip),%rdi
  mov    %eax,%esi
  xor    %eax,%eax
  call   <printf@plt>
  mov    %rbp,%rsi
  lea    D110(%rip),%rdi
  xor    %eax,%eax
  call   <printf@plt>
  mov    %rbp,%rsi
  lea    D24(%rip),%rdi
  call   <helper@plt>
  mov    $0x8,%esi
  lea    D5(%rip),%rdi
  xor    %eax,%eax
  call   <printf@plt>
  mov    $0x10,%esi
  lea    D37(%rip),%rdi
  xor    %eax,%eax
  call   <printf@plt>
  lea    D64(%rip),%rsi
  lea    D93(%rip),%rdi
  call   <helper@plt>
  mov    $0x8,%esi
  lea    D2(%rip),%rdi
  xor    %eax,%eax
  call   <printf@plt>
  mov    %rbp,%rdi
  call   <strlen@plt>
  lea    D97(%rip),%rdi
  mov    %eax,%esi
  xor    %eax,%eax
  call   <printf@plt>
  mov    %rbp,%rsi
  lea    D135(%rip),%rdi
  call   <helper@plt>
  mov    0x48(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L9
  add    $0x50,%rsp
  xor    %eax,%eax
  pop    %rbp
  ret
L9:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: extract_symbolic_data
arguments: label: D69
type_guessed: string
name: extract_symbolic_data
arguments: label: D63
type_guessed: string
name: extract_symbolic_data
arguments: label: D133
type_guessed: string
name: extract_symbolic_data
arguments: label: D43
type_guessed: string
name: extract_symbolic_data
arguments: label: D73
type_guessed: string
name: extract_symbolic_data
arguments: label: D110
type_guessed: string
name: extract_symbolic_data
arguments: label: D24
type_guessed: string
name: extract_symbolic_data
arguments: label: D5
type_guessed: string
name: extract_symbolic_data
arguments: label: D37
type_guessed: string
name: extract_symbolic_data
arguments: label: D64
type_guessed: string
name: extract_symbolic_data
arguments: label: D93
type_guessed: string
name: extract_symbolic_data
arguments: label: D2
type_guessed: string
name: extract_symbolic_data
arguments: label: D97
type_guessed: string
name: extract_symbolic_data
arguments: label: D135
type_guessed: string

tool: D69: sizeof(s1) = %d


tool: D63: strlen(s1) = %d


tool: D133: s1

tool: D43: sizeof(s2) = %d


tool: D73: strlen(s2) = %d


tool: D110: s2: "%s"


tool: D24: s2

tool: D5: sizeof(s3) = %d


tool: D37: strlen(s3) = %d


tool: D64: this is a string

tool: D93: s3

tool: D2: sizeof(s4) = %d


tool: D97: strlen(s4) = %d


tool: D135: s4

assistant: ```c
int main(int argc, char *argv[]) {
  char *s1 = malloc(128);
  char s2[64];
  char *s3 = "this is a string";
  char *s4 = s2;
  printf("sizeof(s1) = %d\n", (int)sizeof(s1));
  printf("strlen(s1) = %d\n", (int)strlen(s1));
  helper("s1", s1);
  printf("sizeof(s2) = %d\n", (int)sizeof(s2));
  printf("strlen(s2) = %d\n", (int)strlen(s2));
  printf("s2: \"%s\"\n", s2);
  helper("s2", s2);
  printf("sizeof(s3) = %d\n", (int)sizeof(s3));
  printf("strlen(s3) = %d\n", (int)strlen(s3));
  helper("s3", s3);
  printf("sizeof(s4) = %d\n", (int)sizeof(s4));
  printf("strlen(s4) = %d\n", (int)strlen(s4));
  helper("s4", s4);
  return 0;
}
```