cgi.h

/*
   some simple CGI helper routines
   Copyright (C) Andrew Tridgell 1997-2002

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#pragma once

#include <stdbool.h>
#include "web_server.h"

struct cgi_var {
    struct cgi_var *next;
    char *name;
    char *value;
    char *content;
    unsigned content_len;
};

struct cgi_state {
    /* methods */
    bool (*setup)(struct cgi_state *);
    void (*http_header)(struct cgi_state *, const char *);
    void (*load_variables)(struct cgi_state *);
    const char *(*get)(struct cgi_state *, const char *);
    const char *(*get_content)(struct cgi_state *, const char *, unsigned *size);
    void (*http_error)(struct cgi_state *cgi,
                       const char *err, const char *header, const char *info);
    void (*download)(struct cgi_state *cgi, const char *path);
    void (*put)(struct cgi_state *cgi, const char *name, const char *value);

    /* data */
    struct cgi_var *variables;
    struct template_state *tmpl;
    char *content_type;
    unsigned long content_length;
    int request_post;
    char *query_string;
    char *pathinfo;
    char *url;
    int got_request;
    struct sock_buf *sock;
    char buf[512];
    uint16_t buflen;
    uint16_t bufofs;
};


enum CGI_MIME_TYPE {MIME_TYPE_IMAGE_GIF,
                    MIME_TYPE_IMAGE_JPEG,
                    MIME_TYPE_IMAGE_SVG,
                    MIME_TYPE_TEXT_PLAIN,
                    MIME_TYPE_TEXT_HTML,
                    MIME_TYPE_VIDEO_MP4,
                    MIME_TYPE_JAVASCRIPT,
                    MIME_TYPE_JSON,
                    MIME_TYPE_CSS,
                    MIME_TYPE_MJPG,
                    MIME_TYPE_UNKNOWN};

/* prototypes */
struct cgi_state *cgi_init(struct connection_state *c, struct sock_buf *sock);
void trim_tail(char *s, char *trim_chars);