1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
|
/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at https://curl.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
***************************************************************************/
#include "curl_setup.h"
#if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_CRYPTO_AUTH)
#include "urldata.h"
#include "strcase.h"
#include "vauth/vauth.h"
#include "http_digest.h"
/* The last 3 #include files should be in this order */
#include "curl_printf.h"
#include "curl_memory.h"
#include "memdebug.h"
/* Test example headers:
WWW-Authenticate: Digest realm="testrealm", nonce="1053604598"
Proxy-Authenticate: Digest realm="testrealm", nonce="1053604598"
*/
CURLcode Curl_input_digest(struct connectdata *conn,
bool proxy,
const char *header) /* rest of the *-authenticate:
header */
{
struct Curl_easy *data = conn->data;
/* Point to the correct struct with this */
struct digestdata *digest;
if(proxy) {
digest = &data->state.proxydigest;
}
else {
digest = &data->state.digest;
}
if(!checkprefix("Digest", header))
return CURLE_BAD_CONTENT_ENCODING;
header += strlen("Digest");
while(*header && ISSPACE(*header))
header++;
return Curl_auth_decode_digest_http_message(header, digest);
}
CURLcode Curl_output_digest(struct connectdata *conn,
bool proxy,
const unsigned char *request,
const unsigned char *uripath)
{
CURLcode result;
struct Curl_easy *data = conn->data;
unsigned char *path = NULL;
char *tmp = NULL;
char *response;
size_t len;
bool have_chlg;
/* Point to the address of the pointer that holds the string to send to the
server, which is for a plain host or for a HTTP proxy */
char **allocuserpwd;
/* Point to the name and password for this */
const char *userp;
const char *passwdp;
/* Point to the correct struct with this */
struct digestdata *digest;
struct auth *authp;
if(proxy) {
#ifdef CURL_DISABLE_PROXY
return CURLE_NOT_BUILT_IN;
#else
digest = &data->state.proxydigest;
allocuserpwd = &data->state.aptr.proxyuserpwd;
userp = conn->http_proxy.user;
passwdp = conn->http_proxy.passwd;
authp = &data->state.authproxy;
#endif
}
else {
digest = &data->state.digest;
allocuserpwd = &data->state.aptr.userpwd;
userp = conn->user;
passwdp = conn->passwd;
authp = &data->state.authhost;
}
Curl_safefree(*allocuserpwd);
/* not set means empty */
if(!userp)
userp = "";
if(!passwdp)
passwdp = "";
#if defined(USE_WINDOWS_SSPI)
have_chlg = digest->input_token ? TRUE : FALSE;
#else
have_chlg = digest->nonce ? TRUE : FALSE;
#endif
if(!have_chlg) {
authp->done = FALSE;
return CURLE_OK;
}
/* So IE browsers < v7 cut off the URI part at the query part when they
evaluate the MD5 and some (IIS?) servers work with them so we may need to
do the Digest IE-style. Note that the different ways cause different MD5
sums to get sent.
Apache servers can be set to do the Digest IE-style automatically using
the BrowserMatch feature:
https://httpd.apache.org/docs/2.2/mod/mod_auth_digest.html#msie
Further details on Digest implementation differences:
http://www.fngtps.com/2006/09/http-authentication
*/
if(authp->iestyle) {
tmp = strchr((char *)uripath, '?');
if(tmp) {
size_t urilen = tmp - (char *)uripath;
path = (unsigned char *) aprintf("%.*s", urilen, uripath);
}
}
if(!tmp)
path = (unsigned char *) strdup((char *) uripath);
if(!path)
return CURLE_OUT_OF_MEMORY;
result = Curl_auth_create_digest_http_message(data, userp, passwdp, request,
path, digest, &response, &len);
free(path);
if(result)
return result;
*allocuserpwd = aprintf("%sAuthorization: Digest %s\r\n",
proxy ? "Proxy-" : "",
response);
free(response);
if(!*allocuserpwd)
return CURLE_OUT_OF_MEMORY;
authp->done = TRUE;
return CURLE_OK;
}
void Curl_http_auth_cleanup_digest(struct Curl_easy *data)
{
Curl_auth_digest_cleanup(&data->state.digest);
Curl_auth_digest_cleanup(&data->state.proxydigest);
}
#endif
|
