mdl_url_guard.h

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#pragma once
 
#include <stddef.h>
#include <stdint.h>

typedef enum : uint8_t {
  k_mdl_addr_public    = 0, 
  k_mdl_addr_loopback  = 1, 
  k_mdl_addr_private   = 2, 
  k_mdl_addr_linklocal = 3, 
  k_mdl_addr_unknown   = 4, 
} mdl_addr_class_t;

bool mdl_url_scheme_allowed(const char* url);

mdl_addr_class_t mdl_classify_ip(const char* ip);

bool mdl_addr_is_fetchable(mdl_addr_class_t cls, bool allow_private);

bool mdl_size_exceeds(uint64_t have, uint64_t add, uint64_t cap);

bool mdl_url_host(const char* url, char* out, size_t cap);

bool mdl_url_path(const char* url, char* out, size_t cap);