source: UsbWattMeter/trunk/curl-7.47.1/lib/http_negotiate.c

Last change on this file was 167, checked in by coas-nagasima, 8 years ago

MIMEにSJISを設定
  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
  • Property svn:mime-type set to text/x-csrc; charset=SHIFT_JIS
File size: 6.5 KB
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1/***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 1998 - 2015, Daniel Stenberg, <daniel@haxx.se>, et al.
9 *
10 * This software is licensed as described in the file COPYING, which
11 * you should have received as part of this distribution. The terms
12 * are also available at https://curl.haxx.se/docs/copyright.html.
13 *
14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15 * copies of the Software, and permit persons to whom the Software is
16 * furnished to do so, under the terms of the COPYING file.
17 *
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
20 *
21 ***************************************************************************/
22
23#include "curl_setup.h"
24
25#if defined(HAVE_GSSAPI) && !defined(CURL_DISABLE_HTTP) && defined(USE_SPNEGO)
26
27#include "urldata.h"
28#include "sendf.h"
29#include "curl_gssapi.h"
30#include "rawstr.h"
31#include "curl_base64.h"
32#include "http_negotiate.h"
33#include "curl_sasl.h"
34#include "url.h"
35#include "curl_printf.h"
36
37/* The last #include files should be: */
38#include "curl_memory.h"
39#include "memdebug.h"
40
41CURLcode Curl_input_negotiate(struct connectdata *conn, bool proxy,
42 const char *header)
43{
44 struct SessionHandle *data = conn->data;
45 struct negotiatedata *neg_ctx = proxy?&data->state.proxyneg:
46 &data->state.negotiate;
47 OM_uint32 major_status, minor_status, discard_st;
48 gss_buffer_desc spn_token = GSS_C_EMPTY_BUFFER;
49 gss_buffer_desc input_token = GSS_C_EMPTY_BUFFER;
50 gss_buffer_desc output_token = GSS_C_EMPTY_BUFFER;
51 size_t len;
52 size_t rawlen = 0;
53 CURLcode result;
54
55 if(neg_ctx->context && neg_ctx->status == GSS_S_COMPLETE) {
56 /* We finished successfully our part of authentication, but server
57 * rejected it (since we're again here). Exit with an error since we
58 * can't invent anything better */
59 Curl_cleanup_negotiate(data);
60 return CURLE_LOGIN_DENIED;
61 }
62
63 if(!neg_ctx->server_name) {
64 /* Generate our SPN */
65 char *spn = Curl_sasl_build_gssapi_spn(
66 proxy ? data->set.str[STRING_PROXY_SERVICE_NAME] :
67 data->set.str[STRING_SERVICE_NAME],
68 proxy ? conn->proxy.name : conn->host.name);
69 if(!spn)
70 return CURLE_OUT_OF_MEMORY;
71
72 /* Populate the SPN structure */
73 spn_token.value = spn;
74 spn_token.length = strlen(spn);
75
76 /* Import the SPN */
77 major_status = gss_import_name(&minor_status, &spn_token,
78 GSS_C_NT_HOSTBASED_SERVICE,
79 &neg_ctx->server_name);
80 if(GSS_ERROR(major_status)) {
81 Curl_gss_log_error(data, minor_status, "gss_import_name() failed: ");
82
83 free(spn);
84
85 return CURLE_OUT_OF_MEMORY;
86 }
87
88 free(spn);
89 }
90
91 header += strlen("Negotiate");
92 while(*header && ISSPACE(*header))
93 header++;
94
95 len = strlen(header);
96 if(len > 0) {
97 result = Curl_base64_decode(header, (unsigned char **)&input_token.value,
98 &rawlen);
99 if(result)
100 return result;
101
102 if(!rawlen) {
103 infof(data, "Negotiate handshake failure (empty challenge message)\n");
104
105 return CURLE_BAD_CONTENT_ENCODING;
106 }
107
108 input_token.length = rawlen;
109
110 DEBUGASSERT(input_token.value != NULL);
111 }
112
113 major_status = Curl_gss_init_sec_context(data,
114 &minor_status,
115 &neg_ctx->context,
116 neg_ctx->server_name,
117 &Curl_spnego_mech_oid,
118 GSS_C_NO_CHANNEL_BINDINGS,
119 &input_token,
120 &output_token,
121 TRUE,
122 NULL);
123 Curl_safefree(input_token.value);
124
125 neg_ctx->status = major_status;
126 if(GSS_ERROR(major_status)) {
127 if(output_token.value)
128 gss_release_buffer(&discard_st, &output_token);
129 Curl_gss_log_error(conn->data, minor_status,
130 "gss_init_sec_context() failed: ");
131 return CURLE_OUT_OF_MEMORY;
132 }
133
134 if(!output_token.value || !output_token.length) {
135 if(output_token.value)
136 gss_release_buffer(&discard_st, &output_token);
137 return CURLE_OUT_OF_MEMORY;
138 }
139
140 neg_ctx->output_token = output_token;
141
142 return CURLE_OK;
143}
144
145CURLcode Curl_output_negotiate(struct connectdata *conn, bool proxy)
146{
147 struct negotiatedata *neg_ctx = proxy?&conn->data->state.proxyneg:
148 &conn->data->state.negotiate;
149 char *encoded = NULL;
150 size_t len = 0;
151 char *userp;
152 CURLcode result;
153 OM_uint32 discard_st;
154
155 result = Curl_base64_encode(conn->data,
156 neg_ctx->output_token.value,
157 neg_ctx->output_token.length,
158 &encoded, &len);
159 if(result) {
160 gss_release_buffer(&discard_st, &neg_ctx->output_token);
161 neg_ctx->output_token.value = NULL;
162 neg_ctx->output_token.length = 0;
163 return result;
164 }
165
166 if(!encoded || !len) {
167 gss_release_buffer(&discard_st, &neg_ctx->output_token);
168 neg_ctx->output_token.value = NULL;
169 neg_ctx->output_token.length = 0;
170 return CURLE_REMOTE_ACCESS_DENIED;
171 }
172
173 userp = aprintf("%sAuthorization: Negotiate %s\r\n", proxy ? "Proxy-" : "",
174 encoded);
175 if(proxy) {
176 Curl_safefree(conn->allocptr.proxyuserpwd);
177 conn->allocptr.proxyuserpwd = userp;
178 }
179 else {
180 Curl_safefree(conn->allocptr.userpwd);
181 conn->allocptr.userpwd = userp;
182 }
183
184 free(encoded);
185
186 return (userp == NULL) ? CURLE_OUT_OF_MEMORY : CURLE_OK;
187}
188
189static void cleanup(struct negotiatedata *neg_ctx)
190{
191 OM_uint32 minor_status;
192 if(neg_ctx->context != GSS_C_NO_CONTEXT)
193 gss_delete_sec_context(&minor_status, &neg_ctx->context, GSS_C_NO_BUFFER);
194
195 if(neg_ctx->output_token.value)
196 gss_release_buffer(&minor_status, &neg_ctx->output_token);
197
198 if(neg_ctx->server_name != GSS_C_NO_NAME)
199 gss_release_name(&minor_status, &neg_ctx->server_name);
200
201 memset(neg_ctx, 0, sizeof(*neg_ctx));
202}
203
204void Curl_cleanup_negotiate(struct SessionHandle *data)
205{
206 cleanup(&data->state.negotiate);
207 cleanup(&data->state.proxyneg);
208}
209
210#endif /* HAVE_GSSAPI && !CURL_DISABLE_HTTP && USE_SPNEGO */
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