user: 下面的汇编指令对应的C源代码是什么:

```asm
<command_dispatcher>:
  endbr64
  push   %r13
  lea    D22(%rip),%rsi
  push   %r12
  push   %rbp
  mov    %rdi,%rbp
  sub    $0x820,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x818(%rsp)
  xor    %eax,%eax
  lea    0x410(%rsp),%r12
  mov    %r12,%rdx
  call   <sscanf@plt>
  lea    D97(%rip),%rsi
  mov    %r12,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  jne    L86
  mov    %rbp,%rdi
  lea    0xc(%rsp),%rcx
  mov    %r12,%rdx
  lea    D56(%rip),%rsi
  call   <sscanf@plt>
  mov    0xc(%rsp),%edi
  call   <join_command@plt>
L84:
  mov    0x818(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L17
  add    $0x820,%rsp
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
  nopl   (%rax)
L86:
  lea    D75(%rip),%rsi
  mov    %r12,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  jne    L49
  lea    0x10(%rsp),%r13
  mov    %rbp,%rdi
  lea    0xc(%rsp),%rcx
  mov    %r12,%rdx
  mov    %r13,%r8
  lea    D9(%rip),%rsi
  call   <sscanf@plt>
  mov    0xc(%rsp),%edi
  mov    %r13,%rsi
  call   <send_command@plt>
  jmp    L84
  nopl   0x0(%rax)
L49:
  lea    D33(%rip),%rsi
  mov    %r12,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  je     L75
  lea    D41(%rip),%rsi
  mov    %r12,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  jne    L67
  mov    %rbp,%rdi
  lea    0xc(%rsp),%rcx
  mov    %r12,%rdx
  lea    D19(%rip),%rsi
  call   <sscanf@plt>
  movsbl 0xc(%rsp),%edi
  call   <show_command@plt>
  jmp    L84
  xchg   %ax,%ax
L75:
  mov    %rbp,%rdi
  lea    0xc(%rsp),%rcx
  mov    %r12,%rdx
  lea    D56(%rip),%rsi
  call   <sscanf@plt>
  mov    0xc(%rsp),%edi
  call   <leave_command@plt>
  jmp    L84
  nopl   (%rax)
L67:
  lea    D72(%rip),%rsi
  mov    %r12,%rdi
  call   <strcmp@plt>
  test   %rax,%rax
  jne    L84
  call   <quit_command@plt>
  jmp    L84
L17:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: disassemble_data
arguments: tag: D22
data_type: string
name: disassemble_data
arguments: tag: D97
data_type: string
name: disassemble_data
arguments: tag: D56
data_type: string
name: disassemble_data
arguments: tag: D75
data_type: string
name: disassemble_data
arguments: tag: D9
data_type: string
name: disassemble_data
arguments: tag: D33
data_type: string
name: disassemble_data
arguments: tag: D41
data_type: string
name: disassemble_data
arguments: tag: D19
data_type: string
name: disassemble_data
arguments: tag: D72
data_type: string

tool: D22: %s

tool: D97: join

tool: D56: %s %d

tool: D75: send

tool: D9: %s %d %[^
]%*c

tool: D33: leave

tool: D41: show

tool: D19: %s %c

tool: D72: quit

assistant: ```c
void command_dispatcher(const char *command) {
  int group_id;
  char message_body[1024];
  char verb[1024];
  sscanf(command, "%s", verb);
  if (strcmp(verb, "join") == 0) {
    sscanf(command, "%s %d", verb, &group_id);
    join_command(group_id);
  } else if (strcmp(verb, "send") == 0) {
    sscanf(command, "%s %d %[^\n]%*c", verb, &group_id, message_body);
    send_command(group_id, message_body);
  } else if (strcmp(verb, "leave") == 0) {
    sscanf(command, "%s %d", verb, &group_id);
    leave_command(group_id);
  } else if (strcmp(verb, "show") == 0) {
    char show_c;
    sscanf(command, "%s %c", verb, &show_c);
    show_command(show_c);
  } else if (strcmp(verb, "quit") == 0) {
    quit_command();
  }
}
```