user: 请从给定的汇编指令推导出C源代码:

```asm
<read_string>:
  endbr64
  push   %r13
  push   %r12
  mov    %rsi,%r12
  push   %rbp
  mov    %rdi,%rbp
  push   %rbx
  mov    %rdx,%rbx
  sub    $0x68,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x58(%rsp)
  xor    %eax,%eax
  test   %rsi,%rsi
  je     L8
  test   %rbp,%rbp
  je     L12
L95:
  test   %rbx,%rbx
  je     L67
L75:
  cmpb   $0x2a,(%r12)
  je     L82
  mov    %rbp,%rdi
  mov    %r12,%rsi
  call   <find_string@plt>
  mov    %rax,%rdi
L14:
  mov    %rbx,%rdx
  lea    D83(%rip),%rsi
  call   <sscanf@plt>
  test   %rax,%rax
  je     L81
L7:
  mov    %r12,%rdi
  call   <strlen@plt>
  mov    $0xf,%esi
  mov    %eax,%edi
  call   <min_int@plt>
  mov    0x58(%rsp),%rdx
  sub    %fs:0x28,%rdx
  jne    L35
  add    $0x68,%rsp
  lea    D91(%rip),%rdx
  mov    %rbx,%r8
  mov    %rbp,%rsi
  pop    %rbx
  lea    (%rax,%rdx,1),%rcx
  pop    %rbp
  mov    %r12,%rdx
  lea    D41(%rip),%rdi
  pop    %r12
  pop    %r13
  jmp    10f0 <printf@plt>
  nopl   (%rax)
L82:
  mov    %rbp,%rdi
  lea    0x1(%r12),%rsi
  call   <find_string@plt>
  mov    %rax,%rdi
  jmp    L14
  nopw   0x0(%rax,%rax,1)
L81:
  mov    %rsp,%r13
  mov    %r12,%r8
  lea    D5(%rip),%rdx
  mov    %rbp,%rcx
  mov    %r13,%rdi
  lea    D2(%rip),%rsi
  call   <sprintf@plt>
  mov    %r13,%rdx
  mov    $0x1a4,%edi
  lea    D108(%rip),%rsi
  call   <errhandler@plt>
  jmp    L7
L67:
  lea    D109(%rip),%rdx
  lea    D108(%rip),%rsi
  mov    $0x19c,%edi
  call   <errhandler@plt>
  jmp    L75
  nopl   (%rax)
L8:
  lea    D33(%rip),%rdx
  lea    D108(%rip),%rsi
  mov    $0x19a,%edi
  call   <errhandler@plt>
  test   %rbp,%rbp
  jne    L95
  nopl   0x0(%rax)
L12:
  lea    D35(%rip),%rdx
  lea    D108(%rip),%rsi
  mov    $0x19b,%edi
  call   <errhandler@plt>
  jmp    L95
L35:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: retrieve_data
arguments: tag: D83
type_infered: string
name: retrieve_data
arguments: tag: D91
type_infered: string
name: retrieve_data
arguments: tag: D41
type_infered: string
name: retrieve_data
arguments: tag: D5
type_infered: string
name: retrieve_data
arguments: tag: D2
type_infered: string
name: retrieve_data
arguments: tag: D108
type_infered: string
name: retrieve_data
arguments: tag: D109
type_infered: string
name: retrieve_data
arguments: tag: D33
type_infered: string
name: retrieve_data
arguments: tag: D35
type_infered: string

tool: D83: %s

tool: D91:                

tool: D41: File: %s		%s%s= %s


tool: D5: wrong format

tool: D2:  %s  File: %s   Variable: %s 

tool: D108: /scratch/repos/new/home/jordi_armengol_estape/c-scraper/outputs/2022-01-22/02-19-57/repos/EvaBr/CFD-Lab/refs/heads/master/FinalProject/helper.c

tool: D109: null pointer given as variable

tool: D33: null pointer given as variable name

tool: D35: null pointer given as filename

assistant: ```c
void read_string(const char *szFileName, const char *szVarName, char *pVariable) {
  char *szValue = NULL;
  if (szVarName == 0)
    errhandler(410, "/scratch/repos/new/home/jordi_armengol_estape/c-scraper/outputs/2022-01-22/02-19-57/repos/EvaBr/CFD-Lab/refs/heads/master/FinalProject/helper.c", "null pointer given as variable name");
  if (szFileName == 0)
    errhandler(411, "/scratch/repos/new/home/jordi_armengol_estape/c-scraper/outputs/2022-01-22/02-19-57/repos/EvaBr/CFD-Lab/refs/heads/master/FinalProject/helper.c", "null pointer given as filename");
  if (pVariable == 0)
    errhandler(412, "/scratch/repos/new/home/jordi_armengol_estape/c-scraper/outputs/2022-01-22/02-19-57/repos/EvaBr/CFD-Lab/refs/heads/master/FinalProject/helper.c", "null pointer given as variable");
  if (szVarName[0] == '*')
    szValue = find_string(szFileName, szVarName + 1);
  else
    szValue = find_string(szFileName, szVarName);
  if (sscanf(szValue, "%s", pVariable) == 0) {
    char szTmp[80];
    if (0)
      sprintf(szTmp, " %s  File: %s   Variable: %s  Line: %d", "wrong format", szFileName, szVarName, 0);
    else
      sprintf(szTmp, " %s  File: %s   Variable: %s ", "wrong format", szFileName, szVarName);
    errhandler(420, "/scratch/repos/new/home/jordi_armengol_estape/c-scraper/outputs/2022-01-22/02-19-57/repos/EvaBr/CFD-Lab/refs/heads/master/FinalProject/helper.c", szTmp);
  };
  printf("File: %s\t\t%s%s= %s\n", szFileName, szVarName, &("               "[min_int(strlen(szVarName), 15)]), pVariable);
}
```