user: Translate the below assembly code into C programming language:

```asm
<homogenize_eth_addr>:
  endbr64
  push   %r15
  mov    %rdi,%r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x38,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x28(%rsp)
  xor    %eax,%eax
  call   <strlen@plt>
  cmpb   $0x2d,(%r15)
  mov    %eax,0x4(%rsp)
  jne    L129
  movb   $0x3a,(%r15)
L129:
  lea    0x1(%r15),%rax
  cmpb   $0x2d,0x1(%r15)
  mov    %rax,0x8(%rsp)
  jne    L272
  movb   $0x3a,0x1(%r15)
L272:
  cmpb   $0x2d,0x2(%r15)
  jne    L88
  movb   $0x3a,0x2(%r15)
L88:
  cmpb   $0x2d,0x3(%r15)
  jne    L251
  movb   $0x3a,0x3(%r15)
L251:
  cmpb   $0x2d,0x4(%r15)
  jne    L26
  movb   $0x3a,0x4(%r15)
L26:
  cmpb   $0x2d,0x5(%r15)
  jne    L393
  movb   $0x3a,0x5(%r15)
L393:
  cmpb   $0x2d,0x6(%r15)
  jne    L350
  movb   $0x3a,0x6(%r15)
L350:
  cmpb   $0x2d,0x7(%r15)
  jne    L70
  movb   $0x3a,0x7(%r15)
L70:
  cmpb   $0x2d,0x8(%r15)
  jne    L80
  movb   $0x3a,0x8(%r15)
L80:
  cmpb   $0x2d,0x9(%r15)
  jne    L214
  movb   $0x3a,0x9(%r15)
L214:
  cmpb   $0x2d,0xa(%r15)
  jne    L363
  movb   $0x3a,0xa(%r15)
L363:
  cmpb   $0x2d,0xb(%r15)
  jne    L265
  movb   $0x3a,0xb(%r15)
L265:
  cmpb   $0x2d,0xc(%r15)
  jne    L28
  movb   $0x3a,0xc(%r15)
L28:
  cmpb   $0x2d,0xd(%r15)
  jne    L148
  movb   $0x3a,0xd(%r15)
L148:
  cmpb   $0x2d,0xe(%r15)
  jne    L169
  movb   $0x3a,0xe(%r15)
L169:
  cmpb   $0x2d,0xf(%r15)
  jne    L327
  movb   $0x3a,0xf(%r15)
L327:
  cmpb   $0x2d,0x10(%r15)
  jne    L293
  movb   $0x3a,0x10(%r15)
L293:
  lea    D6(%rip),%rbp
  pxor   %xmm0,%xmm0
  mov    %r15,%rdi
  movb   $0x0,0x20(%rsp)
  mov    %rbp,%rsi
  movaps %xmm0,0x10(%rsp)
  lea    0x10(%rsp),%r13
  call   <strtok2@plt>
  mov    %r13,%r14
  mov    %rax,%r12
  test   %rax,%rax
  je     L126
L395:
  xor    %edi,%edi
  mov    %rbp,%rsi
  call   <strtok2@plt>
  mov    %r12,%rdi
  mov    %rax,%rbx
  call   <strlen@plt>
  cmp    $0x2,%eax
  je     L312
  jg     L66
  test   %eax,%eax
  je     L306
  cmp    $0x1,%eax
  jne    L41
  mov    %r14,%rdi
  mov    %r12,%rdx
  lea    D26(%rip),%rsi
  call   <sprintf@plt>
  cltq
  add    %rax,%r14
L306:
  test   %rbx,%rbx
  je     L126
L280:
  movb   $0x3a,(%r14)
  mov    %rbx,%r12
  add    $0x1,%r14
  jmp    L395
  nop
L66:
  cmp    $0xc,%eax
  jne    L41
  movzwl 0xa(%r15),%eax
  movb   $0x0,0x11(%r15)
  movb   $0x3a,0xe(%r15)
  mov    %ax,0xf(%r15)
  movzwl 0x8(%r15),%eax
  movb   $0x3a,0xb(%r15)
  mov    %ax,0xc(%r15)
  movzwl 0x6(%r15),%eax
  movb   $0x3a,0x8(%r15)
  mov    %ax,0x9(%r15)
  movzwl 0x4(%r15),%eax
  movb   $0x3a,0x5(%r15)
  mov    %ax,0x6(%r15)
  movzbl 0x3(%r15),%eax
  mov    %al,0x4(%r15)
  movzbl 0x2(%r15),%eax
  movb   $0x3a,0x2(%r15)
  mov    %al,0x3(%r15)
L41:
  mov    0x28(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L260
  add    $0x38,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L312:
  mov    %r14,%rdi
  mov    %r12,%rdx
  lea    D23(%rip),%rsi
  call   <sprintf@plt>
  cltq
  add    %rax,%r14
  test   %rbx,%rbx
  jne    L280
L126:
  mov    %r13,%rsi
  mov    $0x11,%edx
  mov    %r15,%rdi
  xor    %ebp,%ebp
  call   <memcpy@plt>
  movslq 0x4(%rsp),%rax
  mov    0x8(%rsp),%rbx
  mov    $0x11,%r14d
  lea    (%r15,%rax,1),%r13
  cmp    $0x1,%rax
  jne    L388
  jmp    L41
  xchg   %ax,%ax
L298:
  add    $0x1,%rbx
  cmp    %r13,%rbx
  je     L41
L388:
  mov    %ebp,%r12d
  add    $0x1,%ebp
  cmpb   $0x3a,-0x1(%rbx)
  jne    L298
  cmpb   $0x3a,(%rbx)
  jne    L298
  lea    0x2(%r12),%eax
  cltq
  nopl   0x0(%rax)
L67:
  mov    %eax,%edx
  add    $0x1,%rax
  cmpb   $0x0,-0x1(%r15,%rax,1)
  jne    L67
  sub    %ebp,%edx
  mov    %r14d,%ecx
  mov    %rbx,%rsi
  sub    %edx,%ecx
  movslq %ecx,%rdi
  mov    %ecx,0x4(%rsp)
  add    %r15,%rdi
  call   <memcpy@plt>
  mov    0x4(%rsp),%ecx
  cmp    %ebp,%ecx
  jle    L298
  lea    0x4(%r12),%eax
  movb   $0x30,(%rbx)
  movb   $0x30,0x1(%rbx)
  movb   $0x3a,0x2(%rbx)
  cmp    %eax,%ecx
  jle    L298
  cltq
  movb   $0x30,(%r15,%rax,1)
  movb   $0x30,0x1(%r15,%rax,1)
  movb   $0x3a,0x2(%r15,%rax,1)
  lea    0x7(%r12),%eax
  cmp    %eax,%ecx
  jle    L298
  cltq
  movb   $0x30,(%r15,%rax,1)
  movb   $0x30,0x1(%r15,%rax,1)
  movb   $0x3a,0x2(%r15,%rax,1)
  lea    0xa(%r12),%eax
  cmp    %eax,%ecx
  jle    L298
  cltq
  movb   $0x30,(%r15,%rax,1)
  movb   $0x30,0x1(%r15,%rax,1)
  movb   $0x3a,0x2(%r15,%rax,1)
  lea    0xd(%r12),%eax
  cmp    %eax,%ecx
  jle    L298
  cltq
  add    $0x10,%r12d
  movb   $0x30,(%r15,%rax,1)
  movb   $0x30,0x1(%r15,%rax,1)
  movb   $0x3a,0x2(%r15,%rax,1)
  cmp    %r12d,%ecx
  jle    L298
  mov    $0x3030,%eax
  movb   $0x3a,0x12(%r15)
  mov    %ax,0x10(%r15)
  jmp    L298
L260:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: retrieve_data
arguments: data_label: D6
type_guessed: string
name: retrieve_data
arguments: data_label: D26
type_guessed: string
name: retrieve_data
arguments: data_label: D23
type_guessed: string

tool: D6: :

tool: D26: 0%s

tool: D23: %s

assistant: ```c
void homogenize_eth_addr(char *buf) {
  const size_t len = strlen(buf);
  for (int i = 0; i < 17; i++) {
    if (buf[i] == '-')
      buf[i] = ':';
  }
  char tmp[17] = {
      0,
  };
  char *cur = tmp;
  char *pair = strtok2(buf, ":");
  while (pair) {
    char *next = strtok2(NULL, ":");
    switch (strlen(pair)) {
    case 12: {
      char *ptr = &buf[3 * 5 + 2];
      *(ptr--) = 0;
      for (int i = 5; i >= 1; i--) {
        *(ptr--) = buf[1 + i * 2];
        *(ptr--) = buf[i * 2];
        *(ptr--) = ':';
      }
    }
      return;
    case 2:
      cur += sprintf(cur, "%s", pair);
      break;
    case 1:
      cur += sprintf(cur, "0%s", pair);
      break;
    case 0:
      break;
    default:
      return;
    }
    if (next) {
      *cur++ = ':';
    }
    pair = next;
  }
  memcpy(buf, tmp, 17);
  for (int i = 0; i < len - 1; i++) {
    if (buf[i] != ':')
      continue;
    if (buf[i + 1] != ':')
      continue;
    const int p1 = i + 1;
    int p2 = p1;
    for (; buf[p2] != 0; p2++) {
    }
    const int digits = p2 - p1;
    const int p3 = 17 - digits;
    memcpy(&buf[p3], &buf[p1], digits);
    for (int j = p1; j < p3; j += 3) {
      buf[j] = '0';
      buf[j + 1] = '0';
      buf[j + 2] = ':';
    }
  }
}
```