user: 请将这段汇编代码片段转换成等效的C代码：

```asm
<get_mime_type>:
  endbr64
  push   %rbx
  sub    $0x10,%rsp
  mov    %rdi,%rbx
  mov    %fs:0x28,%rax
  mov    %rax,0x8(%rsp)
  xor    %eax,%eax
  movq   $0x0,(%rsp)
  mov    $0x0,%esi
  call   <read_mimefile@plt>
  test   %rax,%rax
  je     L13
  mov    (%rsp),%rax
L198:
  mov    0x8(%rsp),%rdx
  sub    %fs:0x28,%rdx
  jne    L59
  add    $0x10,%rsp
  pop    %rbx
  ret
L13:
  mov    $0x2e,%esi
  mov    %rbx,%rdi
  call   <strrchr@plt>
  test   %rax,%rax
  jne    L89
L20:
  mov    (%rsp),%rax
  jmp    L198
L89:
  mov    $0x2e,%esi
  mov    %rbx,%rdi
  call   <strrchr@plt>
  lea    0x1(%rax),%rdi
  call   <strdup@plt>
  mov    %rax,%rbx
  lea    D198(%rip),%rsi
  mov    %rax,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  jne    L92
  mov    %rsp,%rdi
  lea    D21(%rip),%rsi
  call   <asprintf@plt>
L117:
  mov    %rbx,%rdi
  call   <free@plt>
  jmp    L20
L92:
  lea    D86(%rip),%rsi
  mov    %rbx,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  jne    L205
  mov    %rsp,%rdi
  lea    D62(%rip),%rsi
  call   <asprintf@plt>
  jmp    L117
L205:
  lea    D71(%rip),%rsi
  mov    %rbx,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  jne    L134
  mov    %rsp,%rdi
  lea    D72(%rip),%rsi
  call   <asprintf@plt>
  jmp    L117
L134:
  lea    D98(%rip),%rsi
  mov    %rbx,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  jne    L156
  mov    %rsp,%rdi
  lea    D116(%rip),%rsi
  call   <asprintf@plt>
  jmp    L117
L156:
  lea    D99(%rip),%rsi
  mov    %rbx,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  jne    L119
  mov    %rsp,%rdi
  lea    D116(%rip),%rsi
  call   <asprintf@plt>
  jmp    L117
L119:
  lea    D165(%rip),%rsi
  mov    %rbx,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  jne    L71
  mov    %rsp,%rdi
  lea    D177(%rip),%rsi
  call   <asprintf@plt>
  jmp    L117
L71:
  lea    D70(%rip),%rsi
  mov    %rbx,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  jne    L206
  mov    %rsp,%rdi
  lea    D8(%rip),%rsi
  call   <asprintf@plt>
  jmp    L117
L206:
  lea    D175(%rip),%rsi
  mov    %rbx,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  jne    L56
  mov    %rsp,%rdi
  lea    D0(%rip),%rsi
  call   <asprintf@plt>
  jmp    L117
L56:
  lea    D182(%rip),%rsi
  mov    %rbx,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  jne    L99
  mov    %rsp,%rdi
  lea    D24(%rip),%rsi
  call   <asprintf@plt>
  jmp    L117
L99:
  mov    %rsp,%rdi
  lea    D94(%rip),%rdx
  lea    D65(%rip),%rsi
  mov    $0x0,%eax
  call   <asprintf@plt>
  jmp    L117
L59:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: read_data
arguments: tag: D198
datatype: string
name: read_data
arguments: tag: D21
datatype: string
name: read_data
arguments: tag: D86
datatype: string
name: read_data
arguments: tag: D62
datatype: string
name: read_data
arguments: tag: D71
datatype: string
name: read_data
arguments: tag: D72
datatype: string
name: read_data
arguments: tag: D98
datatype: string
name: read_data
arguments: tag: D116
datatype: string
name: read_data
arguments: tag: D99
datatype: string
name: read_data
arguments: tag: D165
datatype: string
name: read_data
arguments: tag: D177
datatype: string
name: read_data
arguments: tag: D70
datatype: string
name: read_data
arguments: tag: D8
datatype: string
name: read_data
arguments: tag: D175
datatype: string
name: read_data
arguments: tag: D0
datatype: string
name: read_data
arguments: tag: D182
datatype: string
name: read_data
arguments: tag: D24
datatype: string
name: read_data
arguments: tag: D94
datatype: string
name: read_data
arguments: tag: D65
datatype: string

tool: D198: html

tool: D21: text/html

tool: D86: gif

tool: D62: image/gif

tool: D71: png

tool: D72: image/png

tool: D98: xml

tool: D116: application/xml

tool: D99: xsl

tool: D165: css

tool: D177: text/css

tool: D70: js

tool: D8: text/javascript

tool: D175: pdf

tool: D0: application/pdf

tool: D182: ogv

tool: D24: video/ogg

tool: D94: application/octet-stream

tool: D65: %s

assistant: ```c
char *get_mime_type(char *filename) {
  char *fileext;
  char *mimetype = NULL;
  if (read_mimefile(filename, mimetype))
    return mimetype;
  if (strrchr(filename, '.')) {
    fileext = strdup(strrchr(filename, '.') + 1);
    if (strcmp(fileext, "html") == 0) {
      asprintf(&mimetype, "text/html");
    } else if (strcmp(fileext, "gif") == 0) {
      asprintf(&mimetype, "image/gif");
    } else if (strcmp(fileext, "png") == 0) {
      asprintf(&mimetype, "image/png");
    } else if (strcmp(fileext, "xml") == 0) {
      asprintf(&mimetype, "application/xml");
    } else if (strcmp(fileext, "xsl") == 0) {
      asprintf(&mimetype, "application/xml");
    } else if (strcmp(fileext, "css") == 0) {
      asprintf(&mimetype, "text/css");
    } else if (strcmp(fileext, "js") == 0) {
      asprintf(&mimetype, "text/javascript");
    } else if (strcmp(fileext, "pdf") == 0) {
      asprintf(&mimetype, "application/pdf");
    } else if (strcmp(fileext, "ogv") == 0) {
      asprintf(&mimetype, "video/ogg");
    } else {
      asprintf(&mimetype, "%s", "application/octet-stream");
    }
    free(fileext);
  }
  return mimetype;
}
```