Add maxmind to redbean

third_party/maxmind/maxminddb.h

@@ -0,0 +1,182 @@
+#ifndef COSMOPOLITAN_THIRD_PARTY_MAXMIND_MAXMINDDB_H_
+#define COSMOPOLITAN_THIRD_PARTY_MAXMIND_MAXMINDDB_H_
+#include "libc/sock/sock.h"
+#include "libc/stdio/stdio.h"
+
+#define MMDB_MODE_MMAP 1
+#define MMDB_MODE_MASK 7
+
+#define MMDB_DATA_TYPE_EXTENDED    0
+#define MMDB_DATA_TYPE_POINTER     1
+#define MMDB_DATA_TYPE_UTF8_STRING 2
+#define MMDB_DATA_TYPE_DOUBLE      3
+#define MMDB_DATA_TYPE_BYTES       4
+#define MMDB_DATA_TYPE_UINT16      5
+#define MMDB_DATA_TYPE_UINT32      6
+#define MMDB_DATA_TYPE_MAP         7
+#define MMDB_DATA_TYPE_INT32       8
+#define MMDB_DATA_TYPE_UINT64      9
+#define MMDB_DATA_TYPE_UINT128     10
+#define MMDB_DATA_TYPE_ARRAY       11
+#define MMDB_DATA_TYPE_CONTAINER   12
+#define MMDB_DATA_TYPE_END_MARKER  13
+#define MMDB_DATA_TYPE_BOOLEAN     14
+#define MMDB_DATA_TYPE_FLOAT       15
+
+#define MMDB_RECORD_TYPE_SEARCH_NODE 0
+#define MMDB_RECORD_TYPE_EMPTY       1
+#define MMDB_RECORD_TYPE_DATA        2
+#define MMDB_RECORD_TYPE_INVALID     3
+
+#define MMDB_SUCCESS                               0
+#define MMDB_FILE_OPEN_ERROR                       1
+#define MMDB_CORRUPT_SEARCH_TREE_ERROR             2
+#define MMDB_INVALID_METADATA_ERROR                3
+#define MMDB_IO_ERROR                              4
+#define MMDB_OUT_OF_MEMORY_ERROR                   5
+#define MMDB_UNKNOWN_DATABASE_FORMAT_ERROR         6
+#define MMDB_INVALID_DATA_ERROR                    7
+#define MMDB_INVALID_LOOKUP_PATH_ERROR             8
+#define MMDB_LOOKUP_PATH_DOES_NOT_MATCH_DATA_ERROR 9
+#define MMDB_INVALID_NODE_NUMBER_ERROR             10
+#define MMDB_IPV6_LOOKUP_IN_IPV4_DATABASE_ERROR    11
+
+#if !(__ASSEMBLER__ + __LINKER__ + 0)
+COSMOPOLITAN_C_START_
+
+/* This is a pointer into the data section for a given IP address lookup */
+typedef struct MMDB_entry_s {
+  const struct MMDB_s *mmdb;
+  uint32_t offset;
+} MMDB_entry_s;
+
+typedef struct MMDB_lookup_result_s {
+  bool found_entry;
+  MMDB_entry_s entry;
+  uint16_t netmask;
+} MMDB_lookup_result_s;
+
+typedef struct MMDB_entry_data_s {
+  bool has_data;
+  union {
+    uint32_t pointer;
+    const char *utf8_string;
+    double double_value;
+    const uint8_t *bytes;
+    uint16_t uint16;
+    uint32_t uint32;
+    int32_t int32;
+    uint64_t uint64;
+    uint128_t uint128;
+    bool boolean;
+    float float_value;
+  };
+  /* This is a 0 if a given entry cannot be found. This can only happen
+   * when a call to MMDB_(v)get_value() asks for hash keys or array
+   * indices that don't exist. */
+  uint32_t offset;
+  /* This is the next entry in the data section, but it's really only
+   * relevant for entries that part of a larger map or array
+   * struct. There's no good reason for an end user to look at this
+   * directly. */
+  uint32_t offset_to_next;
+  /* This is only valid for strings, utf8_strings or binary data */
+  uint32_t data_size;
+  /* This is an MMDB_DATA_TYPE_* constant */
+  uint32_t type;
+} MMDB_entry_data_s;
+
+/* This is the return type when someone asks for all the entry data in a map or
+ * array */
+typedef struct MMDB_entry_data_list_s {
+  MMDB_entry_data_s entry_data;
+  struct MMDB_entry_data_list_s *next;
+  void *pool;
+} MMDB_entry_data_list_s;
+
+typedef struct MMDB_description_s {
+  const char *language;
+  const char *description;
+} MMDB_description_s;
+
+/* WARNING: do not add new fields to this struct without bumping the SONAME.
+ * The struct is allocated by the users of this library and increasing the
+ * size will cause existing users to allocate too little space when the shared
+ * library is upgraded */
+typedef struct MMDB_metadata_s {
+  uint32_t node_count;
+  uint16_t record_size;
+  uint16_t ip_version;
+  const char *database_type;
+  struct {
+    size_t count;
+    const char **names;
+  } languages;
+  uint16_t binary_format_major_version;
+  uint16_t binary_format_minor_version;
+  uint64_t build_epoch;
+  struct {
+    size_t count;
+    MMDB_description_s **descriptions;
+  } description;
+  /* See above warning before adding fields */
+} MMDB_metadata_s;
+
+/* WARNING: do not add new fields to this struct without bumping the SONAME.
+ * The struct is allocated by the users of this library and increasing the
+ * size will cause existing users to allocate too little space when the shared
+ * library is upgraded */
+typedef struct MMDB_ipv4_start_node_s {
+  uint16_t netmask;
+  uint32_t node_value;
+  /* See above warning before adding fields */
+} MMDB_ipv4_start_node_s;
+
+/* WARNING: do not add new fields to this struct without bumping the SONAME.
+ * The struct is allocated by the users of this library and increasing the
+ * size will cause existing users to allocate too little space when the shared
+ * library is upgraded */
+typedef struct MMDB_s {
+  uint32_t flags;
+  const char *filename;
+  ssize_t file_size;
+  const uint8_t *file_content;
+  const uint8_t *data_section;
+  uint32_t data_section_size;
+  const uint8_t *metadata_section;
+  uint32_t metadata_section_size;
+  uint16_t full_record_byte_size;
+  uint16_t depth;
+  MMDB_ipv4_start_node_s ipv4_start_node;
+  MMDB_metadata_s metadata;
+  /* See above warning before adding fields */
+} MMDB_s;
+
+typedef struct MMDB_search_node_s {
+  uint64_t left_record;
+  uint64_t right_record;
+  uint8_t left_record_type;
+  uint8_t right_record_type;
+  MMDB_entry_s left_record_entry;
+  MMDB_entry_s right_record_entry;
+} MMDB_search_node_s;
+
+void MMDB_close(MMDB_s *);
+int MMDB_open(const char *, uint32_t, MMDB_s *);
+MMDB_lookup_result_s MMDB_lookup(const MMDB_s *, uint32_t, int *);
+int MMDB_read_node(const MMDB_s *, uint32_t, MMDB_search_node_s *);
+int MMDB_get_value(MMDB_entry_s *, MMDB_entry_data_s *, ...);
+int MMDB_vget_value(MMDB_entry_s *, MMDB_entry_data_s *, va_list);
+int MMDB_aget_value(MMDB_entry_s *, MMDB_entry_data_s *, const char *const *);
+int MMDB_get_metadata_as_entry_data_list(const MMDB_s *,
+                                         MMDB_entry_data_list_s **);
+int MMDB_get_entry_data_list(MMDB_entry_s *, MMDB_entry_data_list_s **);
+void MMDB_free_entry_data_list(MMDB_entry_data_list_s *);
+int MMDB_dump_entry_data_list(FILE *, MMDB_entry_data_list_s *, int);
+const char *MMDB_lib_version(void);
+const char *MMDB_strerror(int);
+const char *GetMetroName(int);
+
+COSMOPOLITAN_C_END_
+#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
+#endif /* COSMOPOLITAN_THIRD_PARTY_MAXMIND_MAXMINDDB_H_ */