1#ifndef HEADER_CURL_VAUTH_H
2#define HEADER_CURL_VAUTH_H
3/***************************************************************************
4 * _ _ ____ _
5 * Project ___| | | | _ \| |
6 * / __| | | | |_) | |
7 * | (__| |_| | _ <| |___
8 * \___|\___/|_| \_\_____|
9 *
10 * Copyright (C) Steve Holme, <steve_holme@hotmail.com>.
11 *
12 * This software is licensed as described in the file COPYING, which
13 * you should have received as part of this distribution. The terms
14 * are also available at https://curl.se/docs/copyright.html.
15 *
16 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
17 * copies of the Software, and permit persons to whom the Software is
18 * furnished to do so, under the terms of the COPYING file.
19 *
20 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
21 * KIND, either express or implied.
22 *
23 * SPDX-License-Identifier: curl
24 *
25 ***************************************************************************/
26
27#include <curl/curl.h>
28
29#include "bufref.h"
30
31struct Curl_easy;
32
33#if !defined(CURL_DISABLE_DIGEST_AUTH)
34struct digestdata;
35#endif
36
37#if defined(USE_NTLM)
38struct ntlmdata;
39#endif
40
41#if defined(USE_KERBEROS5)
42struct kerberos5data;
43#endif
44
45#if (defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI)) && defined(USE_SPNEGO)
46struct negotiatedata;
47#endif
48
49#if defined(USE_GSASL)
50struct gsasldata;
51#endif
52
53#if defined(USE_WINDOWS_SSPI)
54#define GSS_ERROR(status) ((status) & 0x80000000)
55#endif
56
57/*
58 * Curl_auth_allowed_to_host() tells if authentication, cookies or other
59 * "sensitive data" can (still) be sent to this host.
60 */
61bool Curl_auth_allowed_to_host(struct Curl_easy *data);
62
63/* This is used to build a SPN string */
64#if !defined(USE_WINDOWS_SSPI)
65char *Curl_auth_build_spn(const char *service, const char *host,
66 const char *realm);
67#else
68TCHAR *Curl_auth_build_spn(const char *service, const char *host,
69 const char *realm);
70#endif
71
72/* This is used to test if the user contains a Windows domain name */
73bool Curl_auth_user_contains_domain(const char *user);
74
75/* This is used to generate a PLAIN cleartext message */
76CURLcode Curl_auth_create_plain_message(const char *authzid,
77 const char *authcid,
78 const char *passwd,
79 struct bufref *out);
80
81/* This is used to generate a LOGIN cleartext message */
82CURLcode Curl_auth_create_login_message(const char *value,
83 struct bufref *out);
84
85/* This is used to generate an EXTERNAL cleartext message */
86CURLcode Curl_auth_create_external_message(const char *user,
87 struct bufref *out);
88
89#ifndef CURL_DISABLE_DIGEST_AUTH
90/* This is used to generate a CRAM-MD5 response message */
91CURLcode Curl_auth_create_cram_md5_message(const struct bufref *chlg,
92 const char *userp,
93 const char *passwdp,
94 struct bufref *out);
95
96/* This is used to evaluate if DIGEST is supported */
97bool Curl_auth_is_digest_supported(void);
98
99/* This is used to generate a base64 encoded DIGEST-MD5 response message */
100CURLcode Curl_auth_create_digest_md5_message(struct Curl_easy *data,
101 const struct bufref *chlg,
102 const char *userp,
103 const char *passwdp,
104 const char *service,
105 struct bufref *out);
106
107/* This is used to decode an HTTP DIGEST challenge message */
108CURLcode Curl_auth_decode_digest_http_message(const char *chlg,
109 struct digestdata *digest);
110
111/* This is used to generate an HTTP DIGEST response message */
112CURLcode Curl_auth_create_digest_http_message(struct Curl_easy *data,
113 const char *userp,
114 const char *passwdp,
115 const unsigned char *request,
116 const unsigned char *uri,
117 struct digestdata *digest,
118 char **outptr, size_t *outlen);
119
120/* This is used to clean up the digest specific data */
121void Curl_auth_digest_cleanup(struct digestdata *digest);
122#endif /* !CURL_DISABLE_DIGEST_AUTH */
123
124#ifdef USE_GSASL
125/* This is used to evaluate if MECH is supported by gsasl */
126bool Curl_auth_gsasl_is_supported(struct Curl_easy *data,
127 const char *mech,
128 struct gsasldata *gsasl);
129/* This is used to start a gsasl method */
130CURLcode Curl_auth_gsasl_start(struct Curl_easy *data,
131 const char *userp,
132 const char *passwdp,
133 struct gsasldata *gsasl);
134
135/* This is used to process and generate a new SASL token */
136CURLcode Curl_auth_gsasl_token(struct Curl_easy *data,
137 const struct bufref *chlg,
138 struct gsasldata *gsasl,
139 struct bufref *out);
140
141/* This is used to clean up the gsasl specific data */
142void Curl_auth_gsasl_cleanup(struct gsasldata *digest);
143#endif
144
145#if defined(USE_NTLM)
146/* This is used to evaluate if NTLM is supported */
147bool Curl_auth_is_ntlm_supported(void);
148
149/* This is used to generate a base64 encoded NTLM type-1 message */
150CURLcode Curl_auth_create_ntlm_type1_message(struct Curl_easy *data,
151 const char *userp,
152 const char *passwdp,
153 const char *service,
154 const char *host,
155 struct ntlmdata *ntlm,
156 struct bufref *out);
157
158/* This is used to decode a base64 encoded NTLM type-2 message */
159CURLcode Curl_auth_decode_ntlm_type2_message(struct Curl_easy *data,
160 const struct bufref *type2,
161 struct ntlmdata *ntlm);
162
163/* This is used to generate a base64 encoded NTLM type-3 message */
164CURLcode Curl_auth_create_ntlm_type3_message(struct Curl_easy *data,
165 const char *userp,
166 const char *passwdp,
167 struct ntlmdata *ntlm,
168 struct bufref *out);
169
170/* This is used to clean up the NTLM specific data */
171void Curl_auth_cleanup_ntlm(struct ntlmdata *ntlm);
172#endif /* USE_NTLM */
173
174/* This is used to generate a base64 encoded OAuth 2.0 message */
175CURLcode Curl_auth_create_oauth_bearer_message(const char *user,
176 const char *host,
177 const long port,
178 const char *bearer,
179 struct bufref *out);
180
181/* This is used to generate a base64 encoded XOAuth 2.0 message */
182CURLcode Curl_auth_create_xoauth_bearer_message(const char *user,
183 const char *bearer,
184 struct bufref *out);
185
186#if defined(USE_KERBEROS5)
187/* This is used to evaluate if GSSAPI (Kerberos V5) is supported */
188bool Curl_auth_is_gssapi_supported(void);
189
190/* This is used to generate a base64 encoded GSSAPI (Kerberos V5) user token
191 message */
192CURLcode Curl_auth_create_gssapi_user_message(struct Curl_easy *data,
193 const char *userp,
194 const char *passwdp,
195 const char *service,
196 const char *host,
197 const bool mutual,
198 const struct bufref *chlg,
199 struct kerberos5data *krb5,
200 struct bufref *out);
201
202/* This is used to generate a base64 encoded GSSAPI (Kerberos V5) security
203 token message */
204CURLcode Curl_auth_create_gssapi_security_message(struct Curl_easy *data,
205 const char *authzid,
206 const struct bufref *chlg,
207 struct kerberos5data *krb5,
208 struct bufref *out);
209
210/* This is used to clean up the GSSAPI specific data */
211void Curl_auth_cleanup_gssapi(struct kerberos5data *krb5);
212#endif /* USE_KERBEROS5 */
213
214#if defined(USE_SPNEGO)
215/* This is used to evaluate if SPNEGO (Negotiate) is supported */
216bool Curl_auth_is_spnego_supported(void);
217
218/* This is used to decode a base64 encoded SPNEGO (Negotiate) challenge
219 message */
220CURLcode Curl_auth_decode_spnego_message(struct Curl_easy *data,
221 const char *user,
222 const char *password,
223 const char *service,
224 const char *host,
225 const char *chlg64,
226 struct negotiatedata *nego);
227
228/* This is used to generate a base64 encoded SPNEGO (Negotiate) response
229 message */
230CURLcode Curl_auth_create_spnego_message(struct negotiatedata *nego,
231 char **outptr, size_t *outlen);
232
233/* This is used to clean up the SPNEGO specific data */
234void Curl_auth_cleanup_spnego(struct negotiatedata *nego);
235
236#endif /* USE_SPNEGO */
237
238#endif /* HEADER_CURL_VAUTH_H */
239