/*

Copyright (c) 2007 Carl Byington - 510 Software Group, released under
the GPL version 3 or any later version at your choice available at
http://www.gnu.org/licenses/gpl-3.0.txt

*/


class ROUTECONFIG;
class CONFIG;

enum pattern_style {style_reset, style_path, style_announce, style_withdraw, style_ip};
enum suspicion     {suspicious_none, suspicious_origin, suspicious_adjacency};

class PATTERN {
    pattern_style   style;
    const char *    pattern;    // owned by the string table
    regex_t         re;
    int             index1;     // zero based substring of the regex match that contains the as list or prefix value
    int             index2;     // zero based substring of the regex match that contains the prefix length
public:
    ~PATTERN();
    PATTERN(TOKEN &tok, pattern_style style_, const char *pattern_, int index1_, int index2_);
    bool    process(char *buf, CONFIG &con, const char *file_name, int pattern_index);
    void    dump(int level, int index, const char *token);
    void    dump(int level);
};

typedef ROUTECONFIG *           ROUTECONFIGP;
typedef PATTERN *               PATTERNP;
typedef list<ROUTECONFIGP>      routeconfig_list;
typedef list<PATTERNP>          pattern_list;
const int buflen = 1024;

class ROUTECONFIG {
    TOKEN *         tokp;
    const char *    file_name;  // name of the syslog file
    pattern_list    patterns;   // owns the patterns
    int             fd;
    struct stat     openfdstat;
    int             len;        // bytes in the buffer
    char            buf[buflen];
public:
    ROUTECONFIG(TOKEN &tok, const char *file_name_);
    ~ROUTECONFIG();
    bool    failed()    { return (fd == -1); };
    void    open(bool msg);
    bool    read(CONFIG &con);
    void    close();
    void    add_pattern(PATTERNP pat);
    void    process(CONFIG &con);
    void    dump(int level);
};

class CONFIG {
public:
    // the only mutable stuff once it has been loaded from the config file
    int                 reference_count;    // protected by the global config_mutex
    // all the rest is constant after loading from the config file
    int                 generation;
    time_t              load_time;
    string_set          config_files;
    routeconfig_list    routeconfigs;       // owns all the route configs

    CONFIG();
    ~CONFIG();
    void    add_routeconfig(ROUTECONFIGP con) {routeconfigs.push_back(con);};
    void    dump();
    void    read();
};

void        discard(string_set &s);
const char* register_string(string_set &s, const char *name);
const char* register_string(const char *name);
void        clear_strings();
void        clear_rib();
int         ip_address(const char *have);
bool        load_conf(CONFIG &dc, const char *fn);
void        routing_hourly_update();
void        token_init();

extern const char *token_announce_aslist_index;
extern const char *token_announce_pattern;
extern const char *token_announce_prelen_index;
extern const char *token_announce_preval_index;
extern const char *token_file;
extern const char *token_include;
extern const char *token_lbrace;
extern const char *token_rbrace;
extern const char *token_semi;
extern const char *token_slash;
extern const char *token_withdraw_aslist_index;
extern const char *token_withdraw_pattern;
extern const char *token_withdraw_prelen_index;
extern const char *token_withdraw_preval_index;