parslib/parslib.h

#ifndef PARSER_H
#define PARSER_H

#define CRLF     "\r\n"
#define MAX_BOUND 1024
#define LINE_BUF 1024
#define TEST_ONE "GET / HTTP/1.1\r\n"\
                 "Host: archive.0xdeadbeer.xyz\r\n"\
                 "User-Agent: curl/8.9.1\r\n"\
                 "Accept: */*\r\n"\
                 "\r\n"\
                 "{\"key\": \"kefjoiawejfojgorgjbosejrgo\"}"
#define DEFAULT_HTTP "80"
#define DEFAULT_HTTPS "443"

// SRC:https://developer.mozilla.org/en-US/docs/Web/HTTP/Methods
enum methods {
    method_get = 1,
    method_head,
    method_post,
    method_put,
    method_delete,
    method_connect,
    method_options,
    method_trace,
    method_patch
};

// SRC:https://en.wikipedia.org/wiki/List_of_HTTP_header_fields
enum headers {
    header_a_im = 1,
    header_accept,
    header_accept_charset,
    header_accept_datetime,
    header_accept_encoding,
    header_accept_language,
    header_access_control_request_method,
    header_access_control_request_headers,
    header_authorization,
    header_cache_control,
    header_connection,
    header_content_encoding,
    header_content_length,
    header_content_md5,
    header_content_type,
    header_cookie,
    header_date,
    header_expect,
    header_forwarded,
    header_from,
    header_host,
    header_http2_settings,
    header_if_match,
    header_if_modified_since,
    header_if_none_match,
    header_if_range,
    header_if_unmodified_since,
    header_max_forwards,
    header_origin,
    header_pragma,
    header_prefer,
    header_proxy_authorization,
    header_range,
    header_referer,
    header_te,
    header_trailer,
    header_transfer_encoding,
    header_user_agent,
    header_upgrade,
    header_via,
    header_warning,
    header_upgrade_insecure_requests,
    header_x_requested_with,
    header_dnt,
    header_x_forwarded_for,
    header_x_forwarded_host,
    header_x_forwarded_proto,
    header_front_end_https,
    header_x_http_method_override,
    header_x_att_deviceid,
    header_x_wap_profile,
    header_proxy_connection,
    header_x_uidh,
    header_x_csrf_token,
    header_x_request_id,
    header_x_correlation_id,
    header_correlation_id,
    header_save_data,
    header_sec_gpc,
    header_accept_ch,
    header_access_control_allow_origin,
    header_access_control_allow_credentials,
    header_access_control_expose_headers,
    header_access_control_max_age,
    header_access_control_allow_methods,
    header_access_control_allow_headers,
    header_accept_patch,
    header_accept_ranges,
    header_age,
    header_allow,
    header_alt_svc,
    header_content_disposition,
    header_content_language,
    header_content_location,
    header_content_range,
    header_delta_base,
    header_etag,
    header_expires,
    header_im,
    header_last_modified,
    header_link,
    header_location,
    header_p3p,
    header_preference_applied,
    header_proxy_authenticate,
    header_public_key_pins,
    header_retry_after,
    header_server,
    header_set_cookie,
    header_strict_transport_security,
    header_tk,
    header_vary,
    header_www_authenticate,
    header_x_frame_options,
    header_content_security_policy,
    header_expect_ct,
    header_nel,
    header_permissions_policy,
    header_refresh,
    header_report_to,
    header_status,
    header_timing_allow_origin,
    header_x_content_duration,
    header_x_content_type_options,
    header_x_powered_by,
    header_x_redirect_by,
    header_x_ua_compatible,
    header_x_xss_protection,

    header_count
};

struct point {
    char *er;
    int len;
};

struct hostinfo {
    char *hostname; 
    char *service;
    int hostname_len;
    int service_len;
};

struct httitlereq {
    int method;
    struct point uri; 
    struct point ver;
};

struct httitleres {
    struct point ver; 
    int code;
    struct point stxt;
};

struct httpareq {
    struct httitlereq titl;
    struct point hentries[header_count];
};

struct httpares {
    struct httitleres titl; 
    struct point hentries[header_count];
};

int stoin(char *str, int len, int *out);
int initres(void);
void fretres(void);
void frepareq(struct httpareq *req);
void frepares(struct httpares *res);
int readlin(char **buff, char **buff_lim);
int parshfield(char *offset, int len, /* out */ struct point *hentries);

int pahostinfo(char *offset, int len, /* out */ struct hostinfo *info);
int pareqtitl(char *offset, int len, struct httitlereq *titl);
int parestitl(char *offset, int len, struct httitleres *titl);

int pareq(char *buff, /* out */ struct httpareq *req);
int pares(char *buff, /* out */ struct httpares *res);

void printfpareq(struct httpareq *req); 
void printfpares(struct httpares *res);

#endif