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   %rbp
  xor    %esi,%esi
  mov    %rdi,%rbp
  sub    $0x10,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x8(%rsp)
  xor    %eax,%eax
  movq   $0x0,(%rsp)
  call   <read_mimefile@plt>
  test   %rax,%rax
  je     L13
L113:
  mov    (%rsp),%rax
  mov    0x8(%rsp),%rdx
  sub    %fs:0x28,%rdx
  jne    L54
  add    $0x10,%rsp
  pop    %rbp
  ret
  xchg   %ax,%ax
L13:
  mov    $0x2e,%esi
  mov    %rbp,%rdi
  call   <strrchr@plt>
  test   %rax,%rax
  je     L113
  mov    $0x2e,%esi
  mov    %rbp,%rdi
  call   <strrchr@plt>
  lea    0x1(%rax),%rdi
  call   <strdup@plt>
  lea    D164(%rip),%rsi
  mov    %rax,%rdi
  mov    %rax,%rbp
  call   <strcmp@plt>
  test   %rax,%rax
  jne    L81
  mov    %rsp,%rdi
  lea    D171(%rip),%rsi
  call   <asprintf@plt>
L103:
  mov    %rbp,%rdi
  call   <free@plt>
  jmp    L113
  nopl   0x0(%rax,%rax,1)
L81:
  lea    D145(%rip),%rsi
  mov    %rbp,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  je     L138
  lea    D133(%rip),%rsi
  mov    %rbp,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  jne    L96
  mov    %rsp,%rdi
  lea    D82(%rip),%rsi
  call   <asprintf@plt>
  jmp    L103
  nopl   0x0(%rax)
L138:
  mov    %rsp,%rdi
  lea    D96(%rip),%rsi
  call   <asprintf@plt>
  jmp    L103
  nopl   0x0(%rax)
L96:
  lea    D67(%rip),%rsi
  mov    %rbp,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  je     L66
  lea    D155(%rip),%rsi
  mov    %rbp,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  je     L66
  lea    D31(%rip),%rsi
  mov    %rbp,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  jne    L52
  mov    %rsp,%rdi
  lea    D2(%rip),%rsi
  call   <asprintf@plt>
  jmp    L103
  nopl   0x0(%rax,%rax,1)
L66:
  mov    %rsp,%rdi
  lea    D124(%rip),%rsi
  xor    %eax,%eax
  call   <asprintf@plt>
  jmp    L103
L52:
  lea    D129(%rip),%rsi
  mov    %rbp,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  jne    L107
  mov    %rsp,%rdi
  lea    D119(%rip),%rsi
  call   <asprintf@plt>
  jmp    L103
L107:
  lea    D183(%rip),%rsi
  mov    %rbp,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  jne    L86
  mov    %rsp,%rdi
  lea    D158(%rip),%rsi
  call   <asprintf@plt>
  jmp    L103
L86:
  mov    %rbp,%rdi
  lea    D79(%rip),%rsi
  call   <strcmp@plt>
  mov    %rsp,%rdi
  test   %rax,%rax
  jne    L10
  lea    D91(%rip),%rsi
  call   <asprintf@plt>
  jmp    L103
L54:
  call   <__stack_chk_fail@plt>
L10:
  lea    D143(%rip),%rdx
  lea    D48(%rip),%rsi
  xor    %eax,%eax
  call   <asprintf@plt>
  jmp    L103
```

tool_calls: name: extract_symbolic_data
arguments: data_tag: D164
type: string
name: extract_symbolic_data
arguments: data_tag: D171
type: string
name: extract_symbolic_data
arguments: data_tag: D145
type: string
name: extract_symbolic_data
arguments: data_tag: D133
type: string
name: extract_symbolic_data
arguments: data_tag: D82
type: string
name: extract_symbolic_data
arguments: data_tag: D96
type: string
name: extract_symbolic_data
arguments: data_tag: D67
type: string
name: extract_symbolic_data
arguments: data_tag: D155
type: string
name: extract_symbolic_data
arguments: data_tag: D31
type: string
name: extract_symbolic_data
arguments: data_tag: D2
type: string
name: extract_symbolic_data
arguments: data_tag: D124
type: string
name: extract_symbolic_data
arguments: data_tag: D129
type: string
name: extract_symbolic_data
arguments: data_tag: D119
type: string
name: extract_symbolic_data
arguments: data_tag: D183
type: string
name: extract_symbolic_data
arguments: data_tag: D158
type: string
name: extract_symbolic_data
arguments: data_tag: D79
type: string
name: extract_symbolic_data
arguments: data_tag: D91
type: string
name: extract_symbolic_data
arguments: data_tag: D143
type: string
name: extract_symbolic_data
arguments: data_tag: D48
type: string

tool: D164: html

tool: D171: text/html

tool: D145: gif

tool: D133: png

tool: D82: image/png

tool: D96: image/gif

tool: D67: xml

tool: D155: xsl

tool: D31: css

tool: D2: text/css

tool: D124: application/xml

tool: D129: js

tool: D119: text/javascript

tool: D183: pdf

tool: D158: application/pdf

tool: D79: ogv

tool: D91: video/ogg

tool: D143: application/octet-stream

tool: D48: %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;
}
```