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 * http.h                                                                  *
 ***********************IMPORTANT NMAP LICENSE TERMS************************
 *                                                                         *
 * The Nmap Security Scanner is (C) 1996-2009 Insecure.Com LLC. Nmap is    *
 * also a registered trademark of Insecure.Com LLC.  This program is free  *
 * software; you may redistribute and/or modify it under the terms of the  *
 * GNU General Public License as published by the Free Software            *
 * Foundation; Version 2 with the clarifications and exceptions described  *
 * below.  This guarantees your right to use, modify, and redistribute     *
 * this software under certain conditions.  If you wish to embed Nmap      *
 * technology into proprietary software, we sell alternative licenses      *
 * (contact sales@insecure.com).  Dozens of software vendors already       *
 * license Nmap technology such as host discovery, port scanning, OS       *
 * detection, and version detection.                                       *
 *                                                                         *
 * Note that the GPL places important restrictions on "derived works", yet *
 * it does not provide a detailed definition of that term.  To avoid       *
 * misunderstandings, we consider an application to constitute a           *
 * "derivative work" for the purpose of this license if it does any of the *
 * following:                                                              *
 * o Integrates source code from Nmap                                      *
 * o Reads or includes Nmap copyrighted data files, such as                *
 *   nmap-os-db or nmap-service-probes.                                    *
 * o Executes Nmap and parses the results (as opposed to typical shell or  *
 *   execution-menu apps, which simply display raw Nmap output and so are  *
 *   not derivative works.)                                                * 
 * o Integrates/includes/aggregates Nmap into a proprietary executable     *
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 * o Links to a library or executes a program that does any of the above   *
 *                                                                         *
 * The term "Nmap" should be taken to also include any portions or derived *
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 * GPL works.                                                              *
 *                                                                         *
 * If you have any questions about the GPL licensing restrictions on using *
 * Nmap in non-GPL works, we would be happy to help.  As mentioned above,  *
 * we also offer alternative license to integrate Nmap into proprietary    *
 * applications and appliances.  These contracts have been sold to dozens  *
 * of software vendors, and generally include a perpetual license as well  *
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 * fund the continued development of Nmap technology.  Please email        *
 * sales@insecure.com for further information.                             *
 *                                                                         *
 * As a special exception to the GPL terms, Insecure.Com LLC grants        *
 * permission to link the code of this program with any version of the     *
 * OpenSSL library which is distributed under a license identical to that  *
 * listed in the included COPYING.OpenSSL file, and distribute linked      *
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 * respects for all of the code used other than OpenSSL.  If you modify    *
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 * but you are not obligated to do so.                                     *
 *                                                                         *
 * If you received these files with a written license agreement or         *
 * contract stating terms other than the terms above, then that            *
 * alternative license agreement takes precedence over these comments.     *
 *                                                                         *
 * Source is provided to this software because we believe users have a     *
 * right to know exactly what a program is going to do before they run it. *
 * This also allows you to audit the software for security holes (none     *
 * have been found so far).                                                *
 *                                                                         *
 * Source code also allows you to port Nmap to new platforms, fix bugs,    *
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 * when you send them.                                                     *
 *                                                                         *
 * This program is distributed in the hope that it will be useful, but     *
 * WITHOUT ANY WARRANTY; without even the implied warranty of              *
 * General Public License v2.0 for more details at                         *
 * http://www.gnu.org/licenses/gpl-2.0.html , or in the COPYING file       *
 * included with Nmap.                                                     *
 *                                                                         *

/* $Id$ */

#ifndef _HTTP_H
#define _HTTP_H

#include <stdio.h>
#include <stdlib.h>

/* This is an abstraction over a socket that provides rudimentary buffering. It
   is useful for the line-oriented parts of HTTP. */
00098 struct socket_buffer {
    int sd;
    char buffer[BUFSIZ];
    char *p;
    char *end;

void socket_buffer_init(struct socket_buffer *buf, int sd);

int socket_buffer_read(struct socket_buffer *buf, char *out, size_t size);

char *socket_buffer_readline(struct socket_buffer *buf, size_t *n, size_t maxlen);

int socket_buffer_readcount(struct socket_buffer *buf, char *out, size_t size);

char *socket_buffer_remainder(struct socket_buffer *buf, size_t *len);

/* A broken-down URI as defined in RFC 3986, except that the query and fragment
   parts are included in the path. */
00117 struct uri {
    char *scheme;
    char *host;
    int port;
    char *path;

void uri_init(struct uri *uri);

void uri_free(struct uri *uri);

struct uri *uri_parse(struct uri *uri, const char *uri_s);

struct uri *uri_parse_authority(struct uri *uri, const char *authority);

enum http_version {

00139 struct http_header {
    char *name;
    char *value;
    struct http_header *next;

00145 struct http_request {
    char *method;
    struct uri uri;
    enum http_version version;
    struct http_header *header;
    unsigned long content_length;
    unsigned long bytes_transferred;

00154 struct http_response {
    enum http_version version;
    int code;
    char *phrase;
    struct http_header *header;
    unsigned long content_length;
    unsigned long bytes_transferred;

void http_header_free(struct http_header *header);
char *http_header_get(const struct http_header *header, const char *name);
char *http_header_get_first(const struct http_header *header, const char *name);
struct http_header *http_header_set(struct http_header *header, const char *name, const char *value);
struct http_header *http_header_remove(struct http_header *header, const char *name);
int http_header_remove_hop_by_hop(struct http_header **header);
char *http_header_to_string(const struct http_header *header, size_t *n);

void http_request_init(struct http_request *request);
void http_request_free(struct http_request *request);
char *http_request_to_string(const struct http_request *request, size_t *n);

void http_response_init(struct http_response *response);
void http_response_free(struct http_response *response);
char *http_response_to_string(const struct http_response *response, size_t *n);

int http_read_header(struct socket_buffer *buf, char **result);
int http_parse_header(struct http_header **result, const char *header);
int http_request_parse_header(struct http_request *request, const char *header);
int http_response_parse_header(struct http_response *response, const char *header);

int http_read_request_line(struct socket_buffer *buf, char **line);
int http_parse_request_line(const char *line, struct http_request *request);

int http_read_status_line(struct socket_buffer *buf, char **line);
int http_parse_status_line(const char *line, struct http_response *response);
int http_parse_status_line_code(const char *line);

int http_check_auth_basic(const char *userpass, const char *value);


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