[331] | 1 | /***************************************************************************
|
---|
| 2 | * _ _ ____ _
|
---|
| 3 | * Project ___| | | | _ \| |
|
---|
| 4 | * / __| | | | |_) | |
|
---|
| 5 | * | (__| |_| | _ <| |___
|
---|
| 6 | * \___|\___/|_| \_\_____|
|
---|
| 7 | *
|
---|
| 8 | * Copyright (C) 1998 - 2017, 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(CURL_DISABLE_HTTP) && defined(USE_NTLM)
|
---|
| 26 |
|
---|
| 27 | /*
|
---|
| 28 | * NTLM details:
|
---|
| 29 | *
|
---|
| 30 | * https://davenport.sourceforge.io/ntlm.html
|
---|
| 31 | * https://www.innovation.ch/java/ntlm.html
|
---|
| 32 | */
|
---|
| 33 |
|
---|
| 34 | #define DEBUG_ME 0
|
---|
| 35 |
|
---|
| 36 | #include "urldata.h"
|
---|
| 37 | #include "sendf.h"
|
---|
| 38 | #include "strcase.h"
|
---|
| 39 | #include "http_ntlm.h"
|
---|
| 40 | #include "curl_ntlm_core.h"
|
---|
| 41 | #include "curl_ntlm_wb.h"
|
---|
| 42 | #include "vauth/vauth.h"
|
---|
| 43 | #include "url.h"
|
---|
| 44 |
|
---|
| 45 | /* SSL backend-specific #if branches in this file must be kept in the order
|
---|
| 46 | documented in curl_ntlm_core. */
|
---|
| 47 | #if defined(NTLM_NEEDS_NSS_INIT)
|
---|
| 48 | #include "vtls/nssg.h"
|
---|
| 49 | #elif defined(USE_WINDOWS_SSPI)
|
---|
| 50 | #include "curl_sspi.h"
|
---|
| 51 | #endif
|
---|
| 52 |
|
---|
| 53 | /* The last 3 #include files should be in this order */
|
---|
| 54 | #include "curl_printf.h"
|
---|
| 55 | #include "curl_memory.h"
|
---|
| 56 | #include "memdebug.h"
|
---|
| 57 |
|
---|
| 58 | #if DEBUG_ME
|
---|
| 59 | # define DEBUG_OUT(x) x
|
---|
| 60 | #else
|
---|
| 61 | # define DEBUG_OUT(x) Curl_nop_stmt
|
---|
| 62 | #endif
|
---|
| 63 |
|
---|
| 64 | CURLcode Curl_input_ntlm(struct connectdata *conn,
|
---|
| 65 | bool proxy, /* if proxy or not */
|
---|
| 66 | const char *header) /* rest of the www-authenticate:
|
---|
| 67 | header */
|
---|
| 68 | {
|
---|
| 69 | /* point to the correct struct with this */
|
---|
| 70 | struct ntlmdata *ntlm;
|
---|
| 71 | CURLcode result = CURLE_OK;
|
---|
| 72 |
|
---|
| 73 | ntlm = proxy ? &conn->proxyntlm : &conn->ntlm;
|
---|
| 74 |
|
---|
| 75 | if(checkprefix("NTLM", header)) {
|
---|
| 76 | header += strlen("NTLM");
|
---|
| 77 |
|
---|
| 78 | while(*header && ISSPACE(*header))
|
---|
| 79 | header++;
|
---|
| 80 |
|
---|
| 81 | if(*header) {
|
---|
| 82 | result = Curl_auth_decode_ntlm_type2_message(conn->data, header, ntlm);
|
---|
| 83 | if(result)
|
---|
| 84 | return result;
|
---|
| 85 |
|
---|
| 86 | ntlm->state = NTLMSTATE_TYPE2; /* We got a type-2 message */
|
---|
| 87 | }
|
---|
| 88 | else {
|
---|
| 89 | if(ntlm->state == NTLMSTATE_LAST) {
|
---|
| 90 | infof(conn->data, "NTLM auth restarted\n");
|
---|
| 91 | Curl_http_ntlm_cleanup(conn);
|
---|
| 92 | }
|
---|
| 93 | else if(ntlm->state == NTLMSTATE_TYPE3) {
|
---|
| 94 | infof(conn->data, "NTLM handshake rejected\n");
|
---|
| 95 | Curl_http_ntlm_cleanup(conn);
|
---|
| 96 | ntlm->state = NTLMSTATE_NONE;
|
---|
| 97 | return CURLE_REMOTE_ACCESS_DENIED;
|
---|
| 98 | }
|
---|
| 99 | else if(ntlm->state >= NTLMSTATE_TYPE1) {
|
---|
| 100 | infof(conn->data, "NTLM handshake failure (internal error)\n");
|
---|
| 101 | return CURLE_REMOTE_ACCESS_DENIED;
|
---|
| 102 | }
|
---|
| 103 |
|
---|
| 104 | ntlm->state = NTLMSTATE_TYPE1; /* We should send away a type-1 */
|
---|
| 105 | }
|
---|
| 106 | }
|
---|
| 107 |
|
---|
| 108 | return result;
|
---|
| 109 | }
|
---|
| 110 |
|
---|
| 111 | /*
|
---|
| 112 | * This is for creating ntlm header output
|
---|
| 113 | */
|
---|
| 114 | CURLcode Curl_output_ntlm(struct connectdata *conn, bool proxy)
|
---|
| 115 | {
|
---|
| 116 | char *base64 = NULL;
|
---|
| 117 | size_t len = 0;
|
---|
| 118 | CURLcode result;
|
---|
| 119 |
|
---|
| 120 | /* point to the address of the pointer that holds the string to send to the
|
---|
| 121 | server, which is for a plain host or for a HTTP proxy */
|
---|
| 122 | char **allocuserpwd;
|
---|
| 123 |
|
---|
| 124 | /* point to the name and password for this */
|
---|
| 125 | const char *userp;
|
---|
| 126 | const char *passwdp;
|
---|
| 127 |
|
---|
| 128 | /* point to the correct struct with this */
|
---|
| 129 | struct ntlmdata *ntlm;
|
---|
| 130 | struct auth *authp;
|
---|
| 131 |
|
---|
| 132 | DEBUGASSERT(conn);
|
---|
| 133 | DEBUGASSERT(conn->data);
|
---|
| 134 |
|
---|
| 135 | #if defined(NTLM_NEEDS_NSS_INIT)
|
---|
| 136 | if(CURLE_OK != Curl_nss_force_init(conn->data))
|
---|
| 137 | return CURLE_OUT_OF_MEMORY;
|
---|
| 138 | #endif
|
---|
| 139 |
|
---|
| 140 | if(proxy) {
|
---|
| 141 | allocuserpwd = &conn->allocptr.proxyuserpwd;
|
---|
| 142 | userp = conn->http_proxy.user;
|
---|
| 143 | passwdp = conn->http_proxy.passwd;
|
---|
| 144 | ntlm = &conn->proxyntlm;
|
---|
| 145 | authp = &conn->data->state.authproxy;
|
---|
| 146 | }
|
---|
| 147 | else {
|
---|
| 148 | allocuserpwd = &conn->allocptr.userpwd;
|
---|
| 149 | userp = conn->user;
|
---|
| 150 | passwdp = conn->passwd;
|
---|
| 151 | ntlm = &conn->ntlm;
|
---|
| 152 | authp = &conn->data->state.authhost;
|
---|
| 153 | }
|
---|
| 154 | authp->done = FALSE;
|
---|
| 155 |
|
---|
| 156 | /* not set means empty */
|
---|
| 157 | if(!userp)
|
---|
| 158 | userp = "";
|
---|
| 159 |
|
---|
| 160 | if(!passwdp)
|
---|
| 161 | passwdp = "";
|
---|
| 162 |
|
---|
| 163 | #ifdef USE_WINDOWS_SSPI
|
---|
| 164 | if(s_hSecDll == NULL) {
|
---|
| 165 | /* not thread safe and leaks - use curl_global_init() to avoid */
|
---|
| 166 | CURLcode err = Curl_sspi_global_init();
|
---|
| 167 | if(s_hSecDll == NULL)
|
---|
| 168 | return err;
|
---|
| 169 | }
|
---|
| 170 | #endif
|
---|
| 171 |
|
---|
| 172 | switch(ntlm->state) {
|
---|
| 173 | case NTLMSTATE_TYPE1:
|
---|
| 174 | default: /* for the weird cases we (re)start here */
|
---|
| 175 | /* Create a type-1 message */
|
---|
| 176 | result = Curl_auth_create_ntlm_type1_message(conn->data, userp, passwdp,
|
---|
| 177 | ntlm, &base64, &len);
|
---|
| 178 | if(result)
|
---|
| 179 | return result;
|
---|
| 180 |
|
---|
| 181 | if(base64) {
|
---|
| 182 | free(*allocuserpwd);
|
---|
| 183 | *allocuserpwd = aprintf("%sAuthorization: NTLM %s\r\n",
|
---|
| 184 | proxy ? "Proxy-" : "",
|
---|
| 185 | base64);
|
---|
| 186 | free(base64);
|
---|
| 187 | if(!*allocuserpwd)
|
---|
| 188 | return CURLE_OUT_OF_MEMORY;
|
---|
| 189 |
|
---|
| 190 | DEBUG_OUT(fprintf(stderr, "**** Header %s\n ", *allocuserpwd));
|
---|
| 191 | }
|
---|
| 192 | break;
|
---|
| 193 |
|
---|
| 194 | case NTLMSTATE_TYPE2:
|
---|
| 195 | /* We already received the type-2 message, create a type-3 message */
|
---|
| 196 | result = Curl_auth_create_ntlm_type3_message(conn->data, userp, passwdp,
|
---|
| 197 | ntlm, &base64, &len);
|
---|
| 198 | if(result)
|
---|
| 199 | return result;
|
---|
| 200 |
|
---|
| 201 | if(base64) {
|
---|
| 202 | free(*allocuserpwd);
|
---|
| 203 | *allocuserpwd = aprintf("%sAuthorization: NTLM %s\r\n",
|
---|
| 204 | proxy ? "Proxy-" : "",
|
---|
| 205 | base64);
|
---|
| 206 | free(base64);
|
---|
| 207 | if(!*allocuserpwd)
|
---|
| 208 | return CURLE_OUT_OF_MEMORY;
|
---|
| 209 |
|
---|
| 210 | DEBUG_OUT(fprintf(stderr, "**** %s\n ", *allocuserpwd));
|
---|
| 211 |
|
---|
| 212 | ntlm->state = NTLMSTATE_TYPE3; /* we send a type-3 */
|
---|
| 213 | authp->done = TRUE;
|
---|
| 214 | }
|
---|
| 215 | break;
|
---|
| 216 |
|
---|
| 217 | case NTLMSTATE_TYPE3:
|
---|
| 218 | /* connection is already authenticated,
|
---|
| 219 | * don't send a header in future requests */
|
---|
| 220 | ntlm->state = NTLMSTATE_LAST;
|
---|
| 221 | /* fall-through */
|
---|
| 222 | case NTLMSTATE_LAST:
|
---|
| 223 | Curl_safefree(*allocuserpwd);
|
---|
| 224 | authp->done = TRUE;
|
---|
| 225 | break;
|
---|
| 226 | }
|
---|
| 227 |
|
---|
| 228 | return CURLE_OK;
|
---|
| 229 | }
|
---|
| 230 |
|
---|
| 231 | void Curl_http_ntlm_cleanup(struct connectdata *conn)
|
---|
| 232 | {
|
---|
| 233 | Curl_auth_ntlm_cleanup(&conn->ntlm);
|
---|
| 234 | Curl_auth_ntlm_cleanup(&conn->proxyntlm);
|
---|
| 235 |
|
---|
| 236 | #if defined(NTLM_WB_ENABLED)
|
---|
| 237 | Curl_ntlm_wb_cleanup(conn);
|
---|
| 238 | #endif
|
---|
| 239 | }
|
---|
| 240 |
|
---|
| 241 | #endif /* !CURL_DISABLE_HTTP && USE_NTLM */
|
---|