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nmap/ncat/http.h
david ed2ba4e168 Copy nping, nsock, nbase, zenmap, ncat from their homes in /.
If you have trouble updating after this revision you need to follow
these instructions. You have probably just seen an error like this:

svn: URL 'svn://svn.insecure.org/nping' of existing directory 'nping'
does not match expected URL 'svn://svn.insecure.org/nmap/nping'

This is caused by the replacement of SVN externals.

Here's what you need to do. First, save any local changes you might have
in the nping, nsock, nbase, ncat, and zenmap directories. (For example
by running "cd nping; svn diff > ../nping.diff".) If you don't have any
local changes you can skip this step.

Then run these commands:

rm -rf nping/ nsock/ nbase/ ncat/ zenmap/
svn update
svn cleanup

If all else fails, you can just delete your whole working directory and
check out anew:

svn co --username guest --password "" svn://svn.insecure.org/nmap

There may be further discussion in the mailing list thread at
http://seclists.org/nmap-dev/2011/q4/303.
2011-11-16 21:49:44 +00:00

254 lines
12 KiB
C

/***************************************************************************
* http.h *
***********************IMPORTANT NMAP LICENSE TERMS************************
* *
* The Nmap Security Scanner is (C) 1996-2011 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 *
* installer, such as those produced by InstallShield. *
* 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 *
* works of Nmap. This list is not exclusive, but is meant to clarify our *
* interpretation of derived works with some common examples. Our *
* interpretation applies only to Nmap--we don't speak for other people's *
* 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 *
* as providing for priority support and updates as well as helping to *
* 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 docs/licenses/OpenSSL.txt file, and distribute *
* linked combinations including the two. You must obey the GNU GPL in all *
* respects for all of the code used other than OpenSSL. If you modify *
* this file, you may extend this exception to your version of the file, *
* 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, *
* and add new features. You are highly encouraged to send your changes *
* to nmap-dev@insecure.org for possible incorporation into the main *
* distribution. By sending these changes to Fyodor or one of the *
* Insecure.Org development mailing lists, it is assumed that you are *
* offering the Nmap Project (Insecure.Com LLC) the unlimited, *
* non-exclusive right to reuse, modify, and relicense the code. Nmap *
* will always be available Open Source, but this is important because the *
* inability to relicense code has caused devastating problems for other *
* Free Software projects (such as KDE and NASM). We also occasionally *
* relicense the code to third parties as discussed above. If you wish to *
* specify special license conditions of your contributions, just say so *
* 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 *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
* 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 "ncat_config.h"
#include "util.h"
#include <stdio.h>
#include <stdlib.h>
/* This is an abstraction over a socket (really a struct fdinfo) that provides
rudimentary buffering. It is useful for the line-oriented parts of HTTP. */
struct socket_buffer {
struct fdinfo fdn;
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. */
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 {
HTTP_09,
HTTP_10,
HTTP_11,
HTTP_UNKNOWN,
};
struct http_header {
char *name;
char *value;
struct http_header *next;
};
struct http_request {
char *method;
struct uri uri;
enum http_version version;
struct http_header *header;
unsigned long content_length;
unsigned long bytes_transferred;
};
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);
const struct http_header *http_header_next(const struct http_header *header, const struct http_header *p, 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);
enum http_auth_scheme { AUTH_UNKNOWN, AUTH_BASIC, AUTH_DIGEST };
enum http_digest_algorithm { ALGORITHM_MD5, ALGORITHM_UNKNOWN };
enum http_digest_qop { QOP_NONE = 0, QOP_AUTH = 1 << 0, QOP_AUTH_INT = 1 << 1 };
struct http_challenge {
enum http_auth_scheme scheme;
char *realm;
struct {
char *nonce;
char *opaque;
enum http_digest_algorithm algorithm;
/* A bit mask of supported qop values ("auth", "auth-int", etc.). */
unsigned char qop;
} digest;
};
struct http_credentials {
enum http_auth_scheme scheme;
union {
char *basic;
struct {
char *username;
char *realm;
char *nonce;
char *uri;
char *response;
enum http_digest_algorithm algorithm;
enum http_digest_qop qop;
char *nc;
char *cnonce;
} digest;
} u;
};
void http_challenge_init(struct http_challenge *challenge);
void http_challenge_free(struct http_challenge *challenge);
struct http_challenge *http_header_get_proxy_challenge(const struct http_header *header, struct http_challenge *challenge);
void http_credentials_init_basic(struct http_credentials *credentials);
void http_credentials_init_digest(struct http_credentials *credentials);
void http_credentials_free(struct http_credentials *credentials);
struct http_credentials *http_header_get_proxy_credentials(const struct http_header *header, struct http_credentials *credentials);
#if HAVE_HTTP_DIGEST
/* Initialize the server secret used in generating nonces. */
int http_digest_init_secret(void);
int http_digest_nonce_time(const char *nonce, struct timeval *tv);
/* Return a Proxy-Authenticate header. */
char *http_digest_proxy_authenticate(const char *realm, int stale);
/* Return a Proxy-Authorization header answering the given challenge. */
char *http_digest_proxy_authorization(const struct http_challenge *challenge,
const char *username, const char *password,
const char *method, const char *uri);
int http_digest_check_credentials(const char *username, const char *realm,
const char *password, const char *method,
const struct http_credentials *credentials);
#endif
#endif