user: 请将以下的汇编代码转换成C语言代码:

```asm
<zrpc_util_str2mac>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x58,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x48(%rsp)
  xor    %eax,%eax
  test   %rdi,%rdi
  je     L158
  mov    %rdi,%rbx
  mov    %rsi,%r15
  movl   $0x0,0xc(%rsp)
  movl   $0x0,0x8(%rsp)
  cmpb   $0x3a,(%rdi)
  je     L24
L10:
  lea    0x30(%rsp),%rax
  mov    %rax,0x10(%rsp)
  lea    0x2c(%rsp),%rax
  mov    %rax,(%rsp)
L34:
  movl   $0x0,0x2c(%rsp)
  mov    $0x3a,%esi
  mov    %rbx,%rdi
  call   <strchr@plt>
  mov    %rax,0x18(%rsp)
  test   %rax,%rax
  jne    L161
  cmpl   $0x5,0xc(%rsp)
  jne    L270
  mov    %rbx,%rdi
  call   <strlen@plt>
  mov    %rax,%r14
  jmp    L15
L24:
  mov    $0x1,%eax
  cmpb   $0x0,0x1(%rdi)
  jne    L10
  jmp    L37
L270:
  mov    %r15,%rsi
  lea    D7(%rip),%rdi
  call   <zrpc_log@plt>
  jmp    L0
L161:
  mov    0x18(%rsp),%r14
  sub    %rbx,%r14
  sar    $0x2,%r14
L15:
  cmp    $0x5,%r14
  ja     L201
  mov    %r14,%rdx
  mov    %rbx,%rsi
  mov    0x10(%rsp),%rdi
  call   <memcpy@plt>
  test   %r14,%r14
  je     L149
  mov    0x8(%rsp),%r13d
  cmp    $0x5,%r13d
  ja     L0
  mov    %r13d,%ebx
  add    %r15,%rbx
  lea    0x30(%rsp),%rbp
  mov    $0x2,%r12d
  jmp    L52
L201:
  mov    %r15,%rsi
  lea    D7(%rip),%rdi
  mov    $0x0,%eax
  call   <zrpc_log@plt>
  jmp    L0
L209:
  and    $0xf,%eax
  or     %al,(%rbx)
L99:
  add    $0x1,%r13d
  mov    0xc(%rsp),%eax
  add    %r13d,%eax
  sub    0x8(%rsp),%eax
  cmp    %r12,%r14
  jbe    L225
  add    $0x2,%r12
  add    $0x1,%rbx
  add    $0x8,%rbp
  cmp    $0x6,%r13d
  je     L0
L52:
  test   %r15,%r15
  je     L260
  movb   $0x0,(%rbx)
  mov    (%rsp),%rsi
  mov    %rbp,%rdi
  call   <zrpc_util_convertchartohexa@plt>
  cmpl   $0x0,0x2c(%rsp)
  jne    L0
  shl    $0x4,%eax
  mov    %al,(%rbx)
L32:
  lea    -0x1(%r12),%rax
  cmp    %rax,%r14
  je     L0
  lea    0x4(%rbp),%rdi
  mov    (%rsp),%rsi
  call   <zrpc_util_convertchartohexa@plt>
  cmpl   $0x0,0x2c(%rsp)
  jne    L0
  test   %r15,%r15
  jne    L209
  jmp    L99
L225:
  mov    %eax,0xc(%rsp)
  mov    %r13d,0x8(%rsp)
L149:
  mov    0x18(%rsp),%rax
  test   %rax,%rax
  je     L51
  add    $0x4,%rax
  mov    %rax,%rbx
  cmpl   $0x5,0xc(%rsp)
  jbe    L34
  mov    $0x1,%eax
  jmp    L37
L51:
  mov    $0x1,%eax
  jmp    L37
L158:
  mov    $0x0,%eax
  jmp    L37
L260:
  mov    (%rsp),%rsi
  mov    %rbp,%rdi
  call   <zrpc_util_convertchartohexa@plt>
  cmpl   $0x0,0x2c(%rsp)
  je     L32
L0:
  mov    $0x0,%eax
L37:
  mov    0x48(%rsp),%rdx
  sub    %fs:0x28,%rdx
  jne    L96
  add    $0x58,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L96:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: retrieve_data
arguments: tag: D7
type_guessed: string

tool: D7: [%s]: format non recognized

assistant: ```c
int zrpc_util_str2mac(const char *str, char *mac) {
  unsigned int k = 0, i, j;
  uint8_t *ptr, *ptr2;
  size_t len;
  uint8_t car;
  if (!str)
    return 0;
  if (str[0] == ':' && str[1] == '\0')
    return 1;
  i = 0;
  ptr = (uint8_t *)str;
  while (i < 6) {
    uint8_t temp[5];
    int error = 0;
    ptr2 = (uint8_t *)strchr((const char *)ptr, ':');
    if (ptr2 == NULL) {
      if (i != 5) {
        zrpc_log("[%s]: format non recognized", mac);
        return 0;
      }
      len = strlen((char *)ptr);
    } else {
      len = ptr2 - ptr;
    }
    if (len > 5) {
      zrpc_log("[%s]: format non recognized", mac);
      return 0;
    }
    memcpy(temp, ptr, len);
    for (j = 0; j < len; j++) {
      if (k >= 6)
        return 0;
      if (mac)
        mac[k] = 0;
      car = zrpc_util_convertchartohexa(&temp[j], &error);
      if (error)
        return 0;
      if (mac)
        mac[k] = car << 4;
      j++;
      if (j == len)
        return 0;
      car = zrpc_util_convertchartohexa(&temp[j], &error) & 0xf;
      if (error)
        return 0;
      if (mac)
        mac[k] |= car & 0xf;
      k++;
      i++;
    }
    ptr = ptr2;
    if (ptr == NULL)
      break;
    ptr++;
  }
  if (mac && 0) {
    zrpc_log("leave correct : %02x:%02x:%02x:%02x:%02x:%02x", mac[0] & 0xff, mac[1] & 0xff, mac[2] & 0xff, mac[3] & 0xff, mac[4] & 0xff, mac[5] & 0xff);
  }
  return 1;
}
```