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Diffstat (limited to 'external/libcurl_android/jni/libcurl/lib/curl_sasl.c')
-rwxr-xr-xexternal/libcurl_android/jni/libcurl/lib/curl_sasl.c741
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diff --git a/external/libcurl_android/jni/libcurl/lib/curl_sasl.c b/external/libcurl_android/jni/libcurl/lib/curl_sasl.c
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+++ b/external/libcurl_android/jni/libcurl/lib/curl_sasl.c
@@ -0,0 +1,741 @@
+/***************************************************************************
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
+ * \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 2012 - 2014, 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 http://curl.haxx.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.
+ *
+ * RFC2195 CRAM-MD5 authentication
+ * RFC2831 DIGEST-MD5 authentication
+ * RFC4422 Simple Authentication and Security Layer (SASL)
+ * RFC4616 PLAIN authentication
+ * RFC6749 OAuth 2.0 Authorization Framework
+ * Draft LOGIN SASL Mechanism <draft-murchison-sasl-login-00.txt>
+ *
+ ***************************************************************************/
+
+#include "curl_setup.h"
+
+#include <curl/curl.h>
+#include "urldata.h"
+
+#include "curl_base64.h"
+#include "curl_md5.h"
+#include "vtls/vtls.h"
+#include "curl_hmac.h"
+#include "curl_ntlm_msgs.h"
+#include "curl_sasl.h"
+#include "warnless.h"
+#include "curl_memory.h"
+#include "strtok.h"
+#include "rawstr.h"
+
+#ifdef USE_NSS
+#include "vtls/nssg.h" /* for Curl_nss_force_init() */
+#endif
+
+#define _MPRINTF_REPLACE /* use our functions only */
+#include <curl/mprintf.h>
+
+/* The last #include file should be: */
+#include "memdebug.h"
+
+#if defined(USE_WINDOWS_SSPI)
+extern void Curl_sasl_gssapi_cleanup(struct kerberos5data *krb5);
+#endif
+
+#if !defined(CURL_DISABLE_CRYPTO_AUTH) && !defined(USE_WINDOWS_SSPI)
+#define DIGEST_QOP_VALUE_AUTH (1 << 0)
+#define DIGEST_QOP_VALUE_AUTH_INT (1 << 1)
+#define DIGEST_QOP_VALUE_AUTH_CONF (1 << 2)
+
+#define DIGEST_QOP_VALUE_STRING_AUTH "auth"
+#define DIGEST_QOP_VALUE_STRING_AUTH_INT "auth-int"
+#define DIGEST_QOP_VALUE_STRING_AUTH_CONF "auth-conf"
+
+/* Retrieves the value for a corresponding key from the challenge string
+ * returns TRUE if the key could be found, FALSE if it does not exists
+ */
+static bool sasl_digest_get_key_value(const char *chlg,
+ const char *key,
+ char *value,
+ size_t max_val_len,
+ char end_char)
+{
+ char *find_pos;
+ size_t i;
+
+ find_pos = strstr(chlg, key);
+ if(!find_pos)
+ return FALSE;
+
+ find_pos += strlen(key);
+
+ for(i = 0; *find_pos && *find_pos != end_char && i < max_val_len - 1; ++i)
+ value[i] = *find_pos++;
+ value[i] = '\0';
+
+ return TRUE;
+}
+
+static CURLcode sasl_digest_get_qop_values(const char *options, int *value)
+{
+ char *tmp;
+ char *token;
+ char *tok_buf;
+
+ /* Initialise the output */
+ *value = 0;
+
+ /* Tokenise the list of qop values. Use a temporary clone of the buffer since
+ strtok_r() ruins it. */
+ tmp = strdup(options);
+ if(!tmp)
+ return CURLE_OUT_OF_MEMORY;
+
+ token = strtok_r(tmp, ",", &tok_buf);
+ while(token != NULL) {
+ if(Curl_raw_equal(token, DIGEST_QOP_VALUE_STRING_AUTH))
+ *value |= DIGEST_QOP_VALUE_AUTH;
+ else if(Curl_raw_equal(token, DIGEST_QOP_VALUE_STRING_AUTH_INT))
+ *value |= DIGEST_QOP_VALUE_AUTH_INT;
+ else if(Curl_raw_equal(token, DIGEST_QOP_VALUE_STRING_AUTH_CONF))
+ *value |= DIGEST_QOP_VALUE_AUTH_CONF;
+
+ token = strtok_r(NULL, ",", &tok_buf);
+ }
+
+ Curl_safefree(tmp);
+
+ return CURLE_OK;
+}
+#endif
+
+#if !defined(USE_WINDOWS_SSPI)
+/*
+ * Curl_sasl_build_spn()
+ *
+ * This is used to build a SPN string in the format service/host.
+ *
+ * Parameters:
+ *
+ * serivce [in] - The service type such as www, smtp, pop or imap.
+ * instance [in] - The instance name such as the host nme or realm.
+ *
+ * Returns a pointer to the newly allocated SPN.
+ */
+char *Curl_sasl_build_spn(const char *service, const char *host)
+{
+ /* Generate and return our SPN */
+ return aprintf("%s/%s", service, host);
+}
+#endif
+
+/*
+ * Curl_sasl_create_plain_message()
+ *
+ * This is used to generate an already encoded PLAIN message ready
+ * for sending to the recipient.
+ *
+ * Parameters:
+ *
+ * data [in] - The session handle.
+ * userp [in] - The user name.
+ * passdwp [in] - The user's password.
+ * outptr [in/out] - The address where a pointer to newly allocated memory
+ * holding the result will be stored upon completion.
+ * outlen [out] - The length of the output message.
+ *
+ * Returns CURLE_OK on success.
+ */
+CURLcode Curl_sasl_create_plain_message(struct SessionHandle *data,
+ const char *userp,
+ const char *passwdp,
+ char **outptr, size_t *outlen)
+{
+ CURLcode result;
+ char *plainauth;
+ size_t ulen;
+ size_t plen;
+
+ ulen = strlen(userp);
+ plen = strlen(passwdp);
+
+ plainauth = malloc(2 * ulen + plen + 2);
+ if(!plainauth) {
+ *outlen = 0;
+ *outptr = NULL;
+ return CURLE_OUT_OF_MEMORY;
+ }
+
+ /* Calculate the reply */
+ memcpy(plainauth, userp, ulen);
+ plainauth[ulen] = '\0';
+ memcpy(plainauth + ulen + 1, userp, ulen);
+ plainauth[2 * ulen + 1] = '\0';
+ memcpy(plainauth + 2 * ulen + 2, passwdp, plen);
+
+ /* Base64 encode the reply */
+ result = Curl_base64_encode(data, plainauth, 2 * ulen + plen + 2, outptr,
+ outlen);
+ Curl_safefree(plainauth);
+ return result;
+}
+
+/*
+ * Curl_sasl_create_login_message()
+ *
+ * This is used to generate an already encoded LOGIN message containing the
+ * user name or password ready for sending to the recipient.
+ *
+ * Parameters:
+ *
+ * data [in] - The session handle.
+ * valuep [in] - The user name or user's password.
+ * outptr [in/out] - The address where a pointer to newly allocated memory
+ * holding the result will be stored upon completion.
+ * outlen [out] - The length of the output message.
+ *
+ * Returns CURLE_OK on success.
+ */
+CURLcode Curl_sasl_create_login_message(struct SessionHandle *data,
+ const char *valuep, char **outptr,
+ size_t *outlen)
+{
+ size_t vlen = strlen(valuep);
+
+ if(!vlen) {
+ /* Calculate an empty reply */
+ *outptr = strdup("=");
+ if(*outptr) {
+ *outlen = (size_t) 1;
+ return CURLE_OK;
+ }
+
+ *outlen = 0;
+ return CURLE_OUT_OF_MEMORY;
+ }
+
+ /* Base64 encode the value */
+ return Curl_base64_encode(data, valuep, vlen, outptr, outlen);
+}
+
+#ifndef CURL_DISABLE_CRYPTO_AUTH
+ /*
+ * Curl_sasl_decode_cram_md5_message()
+ *
+ * This is used to decode an already encoded CRAM-MD5 challenge message.
+ *
+ * Parameters:
+ *
+ * chlg64 [in] - Pointer to the base64 encoded challenge message.
+ * outptr [in/out] - The address where a pointer to newly allocated memory
+ * holding the result will be stored upon completion.
+ * outlen [out] - The length of the output message.
+ *
+ * Returns CURLE_OK on success.
+ */
+CURLcode Curl_sasl_decode_cram_md5_message(const char *chlg64, char **outptr,
+ size_t *outlen)
+{
+ CURLcode result = CURLE_OK;
+ size_t chlg64len = strlen(chlg64);
+
+ *outptr = NULL;
+ *outlen = 0;
+
+ /* Decode the challenge if necessary */
+ if(chlg64len && *chlg64 != '=')
+ result = Curl_base64_decode(chlg64, (unsigned char **) outptr, outlen);
+
+ return result;
+ }
+
+ /*
+ * Curl_sasl_create_cram_md5_message()
+ *
+ * This is used to generate an already encoded CRAM-MD5 response message ready
+ * for sending to the recipient.
+ *
+ * Parameters:
+ *
+ * data [in] - The session handle.
+ * chlg [in] - The challenge.
+ * userp [in] - The user name.
+ * passdwp [in] - The user's password.
+ * outptr [in/out] - The address where a pointer to newly allocated memory
+ * holding the result will be stored upon completion.
+ * outlen [out] - The length of the output message.
+ *
+ * Returns CURLE_OK on success.
+ */
+CURLcode Curl_sasl_create_cram_md5_message(struct SessionHandle *data,
+ const char *chlg,
+ const char *userp,
+ const char *passwdp,
+ char **outptr, size_t *outlen)
+{
+ CURLcode result = CURLE_OK;
+ size_t chlglen = 0;
+ HMAC_context *ctxt;
+ unsigned char digest[MD5_DIGEST_LEN];
+ char *response;
+
+ if(chlg)
+ chlglen = strlen(chlg);
+
+ /* Compute the digest using the password as the key */
+ ctxt = Curl_HMAC_init(Curl_HMAC_MD5,
+ (const unsigned char *) passwdp,
+ curlx_uztoui(strlen(passwdp)));
+ if(!ctxt)
+ return CURLE_OUT_OF_MEMORY;
+
+ /* Update the digest with the given challenge */
+ if(chlglen > 0)
+ Curl_HMAC_update(ctxt, (const unsigned char *) chlg,
+ curlx_uztoui(chlglen));
+
+ /* Finalise the digest */
+ Curl_HMAC_final(ctxt, digest);
+
+ /* Generate the response */
+ response = aprintf(
+ "%s %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
+ userp, digest[0], digest[1], digest[2], digest[3], digest[4],
+ digest[5], digest[6], digest[7], digest[8], digest[9], digest[10],
+ digest[11], digest[12], digest[13], digest[14], digest[15]);
+ if(!response)
+ return CURLE_OUT_OF_MEMORY;
+
+ /* Base64 encode the response */
+ result = Curl_base64_encode(data, response, 0, outptr, outlen);
+
+ Curl_safefree(response);
+
+ return result;
+}
+
+#ifndef USE_WINDOWS_SSPI
+/*
+ * sasl_decode_digest_md5_message()
+ *
+ * This is used internally to decode an already encoded DIGEST-MD5 challenge
+ * message into the seperate attributes.
+ *
+ * Parameters:
+ *
+ * chlg64 [in] - Pointer to the base64 encoded challenge message.
+ * nonce [in/out] - The buffer where the nonce will be stored.
+ * nlen [in] - The length of the nonce buffer.
+ * realm [in/out] - The buffer where the realm will be stored.
+ * rlen [in] - The length of the realm buffer.
+ * alg [in/out] - The buffer where the algorithm will be stored.
+ * alen [in] - The length of the algorithm buffer.
+ * qop [in/out] - The buffer where the qop-options will be stored.
+ * qlen [in] - The length of the qop buffer.
+ *
+ * Returns CURLE_OK on success.
+ */
+static CURLcode sasl_decode_digest_md5_message(const char *chlg64,
+ char *nonce, size_t nlen,
+ char *realm, size_t rlen,
+ char *alg, size_t alen,
+ char *qop, size_t qlen)
+{
+ CURLcode result = CURLE_OK;
+ unsigned char *chlg = NULL;
+ size_t chlglen = 0;
+ size_t chlg64len = strlen(chlg64);
+
+ /* Decode the base-64 encoded challenge message */
+ if(chlg64len && *chlg64 != '=') {
+ result = Curl_base64_decode(chlg64, &chlg, &chlglen);
+ if(result)
+ return result;
+ }
+
+ /* Ensure we have a valid challenge message */
+ if(!chlg)
+ return CURLE_BAD_CONTENT_ENCODING;
+
+ /* Retrieve nonce string from the challenge */
+ if(!sasl_digest_get_key_value((char *)chlg, "nonce=\"", nonce, nlen, '\"')) {
+ Curl_safefree(chlg);
+ return CURLE_BAD_CONTENT_ENCODING;
+ }
+
+ /* Retrieve realm string from the challenge */
+ if(!sasl_digest_get_key_value((char *)chlg, "realm=\"", realm, rlen, '\"')) {
+ /* Challenge does not have a realm, set empty string [RFC2831] page 6 */
+ strcpy(realm, "");
+ }
+
+ /* Retrieve algorithm string from the challenge */
+ if(!sasl_digest_get_key_value((char *)chlg, "algorithm=", alg, alen, ',')) {
+ Curl_safefree(chlg);
+ return CURLE_BAD_CONTENT_ENCODING;
+ }
+
+ /* Retrieve qop-options string from the challenge */
+ if(!sasl_digest_get_key_value((char *)chlg, "qop=\"", qop, qlen, '\"')) {
+ Curl_safefree(chlg);
+ return CURLE_BAD_CONTENT_ENCODING;
+ }
+
+ Curl_safefree(chlg);
+
+ return CURLE_OK;
+}
+
+/*
+ * Curl_sasl_create_digest_md5_message()
+ *
+ * This is used to generate an already encoded DIGEST-MD5 response message
+ * ready for sending to the recipient.
+ *
+ * Parameters:
+ *
+ * data [in] - The session handle.
+ * chlg64 [in] - Pointer to the base64 encoded challenge message.
+ * userp [in] - The user name.
+ * passdwp [in] - The user's password.
+ * service [in] - The service type such as www, smtp, pop or imap.
+ * outptr [in/out] - The address where a pointer to newly allocated memory
+ * holding the result will be stored upon completion.
+ * outlen [out] - The length of the output message.
+ *
+ * Returns CURLE_OK on success.
+ */
+CURLcode Curl_sasl_create_digest_md5_message(struct SessionHandle *data,
+ const char *chlg64,
+ const char *userp,
+ const char *passwdp,
+ const char *service,
+ char **outptr, size_t *outlen)
+{
+ CURLcode result = CURLE_OK;
+ size_t i;
+ MD5_context *ctxt;
+ char *response = NULL;
+ unsigned char digest[MD5_DIGEST_LEN];
+ char HA1_hex[2 * MD5_DIGEST_LEN + 1];
+ char HA2_hex[2 * MD5_DIGEST_LEN + 1];
+ char resp_hash_hex[2 * MD5_DIGEST_LEN + 1];
+ char nonce[64];
+ char realm[128];
+ char algorithm[64];
+ char qop_options[64];
+ int qop_values;
+ char cnonce[33];
+ unsigned int entropy[4];
+ char nonceCount[] = "00000001";
+ char method[] = "AUTHENTICATE";
+ char qop[] = DIGEST_QOP_VALUE_STRING_AUTH;
+ char *spn = NULL;
+
+ /* Decode the challange message */
+ result = sasl_decode_digest_md5_message(chlg64, nonce, sizeof(nonce),
+ realm, sizeof(realm),
+ algorithm, sizeof(algorithm),
+ qop_options, sizeof(qop_options));
+ if(result)
+ return result;
+
+ /* We only support md5 sessions */
+ if(strcmp(algorithm, "md5-sess") != 0)
+ return CURLE_BAD_CONTENT_ENCODING;
+
+ /* Get the qop-values from the qop-options */
+ result = sasl_digest_get_qop_values(qop_options, &qop_values);
+ if(result)
+ return result;
+
+ /* We only support auth quality-of-protection */
+ if(!(qop_values & DIGEST_QOP_VALUE_AUTH))
+ return CURLE_BAD_CONTENT_ENCODING;
+
+ /* Generate 16 bytes of random data */
+ entropy[0] = Curl_rand(data);
+ entropy[1] = Curl_rand(data);
+ entropy[2] = Curl_rand(data);
+ entropy[3] = Curl_rand(data);
+
+ /* Convert the random data into a 32 byte hex string */
+ snprintf(cnonce, sizeof(cnonce), "%08x%08x%08x%08x",
+ entropy[0], entropy[1], entropy[2], entropy[3]);
+
+ /* So far so good, now calculate A1 and H(A1) according to RFC 2831 */
+ ctxt = Curl_MD5_init(Curl_DIGEST_MD5);
+ if(!ctxt)
+ return CURLE_OUT_OF_MEMORY;
+
+ Curl_MD5_update(ctxt, (const unsigned char *) userp,
+ curlx_uztoui(strlen(userp)));
+ Curl_MD5_update(ctxt, (const unsigned char *) ":", 1);
+ Curl_MD5_update(ctxt, (const unsigned char *) realm,
+ curlx_uztoui(strlen(realm)));
+ Curl_MD5_update(ctxt, (const unsigned char *) ":", 1);
+ Curl_MD5_update(ctxt, (const unsigned char *) passwdp,
+ curlx_uztoui(strlen(passwdp)));
+ Curl_MD5_final(ctxt, digest);
+
+ ctxt = Curl_MD5_init(Curl_DIGEST_MD5);
+ if(!ctxt)
+ return CURLE_OUT_OF_MEMORY;
+
+ Curl_MD5_update(ctxt, (const unsigned char *) digest, MD5_DIGEST_LEN);
+ Curl_MD5_update(ctxt, (const unsigned char *) ":", 1);
+ Curl_MD5_update(ctxt, (const unsigned char *) nonce,
+ curlx_uztoui(strlen(nonce)));
+ Curl_MD5_update(ctxt, (const unsigned char *) ":", 1);
+ Curl_MD5_update(ctxt, (const unsigned char *) cnonce,
+ curlx_uztoui(strlen(cnonce)));
+ Curl_MD5_final(ctxt, digest);
+
+ /* Convert calculated 16 octet hex into 32 bytes string */
+ for(i = 0; i < MD5_DIGEST_LEN; i++)
+ snprintf(&HA1_hex[2 * i], 3, "%02x", digest[i]);
+
+ /* Generate our SPN */
+ spn = Curl_sasl_build_spn(service, realm);
+ if(!spn)
+ return CURLE_OUT_OF_MEMORY;
+
+ /* Calculate H(A2) */
+ ctxt = Curl_MD5_init(Curl_DIGEST_MD5);
+ if(!ctxt) {
+ Curl_safefree(spn);
+
+ return CURLE_OUT_OF_MEMORY;
+ }
+
+ Curl_MD5_update(ctxt, (const unsigned char *) method,
+ curlx_uztoui(strlen(method)));
+ Curl_MD5_update(ctxt, (const unsigned char *) ":", 1);
+ Curl_MD5_update(ctxt, (const unsigned char *) spn,
+ curlx_uztoui(strlen(spn)));
+ Curl_MD5_final(ctxt, digest);
+
+ for(i = 0; i < MD5_DIGEST_LEN; i++)
+ snprintf(&HA2_hex[2 * i], 3, "%02x", digest[i]);
+
+ /* Now calculate the response hash */
+ ctxt = Curl_MD5_init(Curl_DIGEST_MD5);
+ if(!ctxt) {
+ Curl_safefree(spn);
+
+ return CURLE_OUT_OF_MEMORY;
+ }
+
+ Curl_MD5_update(ctxt, (const unsigned char *) HA1_hex, 2 * MD5_DIGEST_LEN);
+ Curl_MD5_update(ctxt, (const unsigned char *) ":", 1);
+ Curl_MD5_update(ctxt, (const unsigned char *) nonce,
+ curlx_uztoui(strlen(nonce)));
+ Curl_MD5_update(ctxt, (const unsigned char *) ":", 1);
+
+ Curl_MD5_update(ctxt, (const unsigned char *) nonceCount,
+ curlx_uztoui(strlen(nonceCount)));
+ Curl_MD5_update(ctxt, (const unsigned char *) ":", 1);
+ Curl_MD5_update(ctxt, (const unsigned char *) cnonce,
+ curlx_uztoui(strlen(cnonce)));
+ Curl_MD5_update(ctxt, (const unsigned char *) ":", 1);
+ Curl_MD5_update(ctxt, (const unsigned char *) qop,
+ curlx_uztoui(strlen(qop)));
+ Curl_MD5_update(ctxt, (const unsigned char *) ":", 1);
+
+ Curl_MD5_update(ctxt, (const unsigned char *) HA2_hex, 2 * MD5_DIGEST_LEN);
+ Curl_MD5_final(ctxt, digest);
+
+ for(i = 0; i < MD5_DIGEST_LEN; i++)
+ snprintf(&resp_hash_hex[2 * i], 3, "%02x", digest[i]);
+
+ /* Generate the response */
+ response = aprintf("username=\"%s\",realm=\"%s\",nonce=\"%s\","
+ "cnonce=\"%s\",nc=\"%s\",digest-uri=\"%s\",response=%s,"
+ "qop=%s",
+ userp, realm, nonce,
+ cnonce, nonceCount, spn, resp_hash_hex, qop);
+ Curl_safefree(spn);
+ if(!response)
+ return CURLE_OUT_OF_MEMORY;
+
+ /* Base64 encode the response */
+ result = Curl_base64_encode(data, response, 0, outptr, outlen);
+
+ Curl_safefree(response);
+
+ return result;
+}
+#endif /* !USE_WINDOWS_SSPI */
+
+#endif /* CURL_DISABLE_CRYPTO_AUTH */
+
+#ifdef USE_NTLM
+/*
+ * Curl_sasl_create_ntlm_type1_message()
+ *
+ * This is used to generate an already encoded NTLM type-1 message ready for
+ * sending to the recipient.
+ *
+ * Note: This is a simple wrapper of the NTLM function which means that any
+ * SASL based protocols don't have to include the NTLM functions directly.
+ *
+ * Parameters:
+ *
+ * userp [in] - The user name in the format User or Domain\User.
+ * passdwp [in] - The user's password.
+ * ntlm [in/out] - The ntlm data struct being used and modified.
+ * outptr [in/out] - The address where a pointer to newly allocated memory
+ * holding the result will be stored upon completion.
+ * outlen [out] - The length of the output message.
+ *
+ * Returns CURLE_OK on success.
+ */
+CURLcode Curl_sasl_create_ntlm_type1_message(const char *userp,
+ const char *passwdp,
+ struct ntlmdata *ntlm,
+ char **outptr, size_t *outlen)
+{
+ return Curl_ntlm_create_type1_message(userp, passwdp, ntlm, outptr, outlen);
+}
+
+/*
+ * Curl_sasl_decode_ntlm_type2_message()
+ *
+ * This is used to decode an already encoded NTLM type-2 message.
+ *
+ * Parameters:
+ *
+ * data [in] - Pointer to session handle.
+ * type2msg [in] - Pointer to the base64 encoded type-2 message.
+ * ntlm [in/out] - The ntlm data struct being used and modified.
+ *
+ * Returns CURLE_OK on success.
+ */
+CURLcode Curl_sasl_decode_ntlm_type2_message(struct SessionHandle *data,
+ const char *type2msg,
+ struct ntlmdata *ntlm)
+{
+#ifdef USE_NSS
+ CURLcode result;
+
+ /* make sure the crypto backend is initialized */
+ result = Curl_nss_force_init(data);
+ if(result)
+ return result;
+#endif
+
+ return Curl_ntlm_decode_type2_message(data, type2msg, ntlm);
+}
+
+/*
+ * Curl_sasl_create_ntlm_type3_message()
+ *
+ * This is used to generate an already encoded NTLM type-3 message ready for
+ * sending to the recipient.
+ *
+ * Parameters:
+ *
+ * data [in] - Pointer to session handle.
+ * userp [in] - The user name in the format User or Domain\User.
+ * passdwp [in] - The user's password.
+ * ntlm [in/out] - The ntlm data struct being used and modified.
+ * outptr [in/out] - The address where a pointer to newly allocated memory
+ * holding the result will be stored upon completion.
+ * outlen [out] - The length of the output message.
+ *
+ * Returns CURLE_OK on success.
+ */
+CURLcode Curl_sasl_create_ntlm_type3_message(struct SessionHandle *data,
+ const char *userp,
+ const char *passwdp,
+ struct ntlmdata *ntlm,
+ char **outptr, size_t *outlen)
+{
+ return Curl_ntlm_create_type3_message(data, userp, passwdp, ntlm, outptr,
+ outlen);
+}
+#endif /* USE_NTLM */
+
+/*
+ * Curl_sasl_create_xoauth2_message()
+ *
+ * This is used to generate an already encoded OAuth 2.0 message ready for
+ * sending to the recipient.
+ *
+ * Parameters:
+ *
+ * data [in] - The session handle.
+ * user [in] - The user name.
+ * bearer [in] - The bearer token.
+ * outptr [in/out] - The address where a pointer to newly allocated memory
+ * holding the result will be stored upon completion.
+ * outlen [out] - The length of the output message.
+ *
+ * Returns CURLE_OK on success.
+ */
+CURLcode Curl_sasl_create_xoauth2_message(struct SessionHandle *data,
+ const char *user,
+ const char *bearer,
+ char **outptr, size_t *outlen)
+{
+ CURLcode result = CURLE_OK;
+ char *xoauth = NULL;
+
+ /* Generate the message */
+ xoauth = aprintf("user=%s\1auth=Bearer %s\1\1", user, bearer);
+ if(!xoauth)
+ return CURLE_OUT_OF_MEMORY;
+
+ /* Base64 encode the reply */
+ result = Curl_base64_encode(data, xoauth, strlen(xoauth), outptr, outlen);
+
+ Curl_safefree(xoauth);
+
+ return result;
+}
+
+/*
+ * Curl_sasl_cleanup()
+ *
+ * This is used to cleanup any libraries or curl modules used by the sasl
+ * functions.
+ *
+ * Parameters:
+ *
+ * conn [in] - Pointer to the connection data.
+ * authused [in] - The authentication mechanism used.
+ */
+void Curl_sasl_cleanup(struct connectdata *conn, unsigned int authused)
+{
+#if defined(USE_WINDOWS_SSPI)
+ /* Cleanup the gssapi structure */
+ if(authused == SASL_MECH_GSSAPI) {
+ Curl_sasl_gssapi_cleanup(&conn->krb5);
+ }
+#ifdef USE_NTLM
+ /* Cleanup the ntlm structure */
+ else if(authused == SASL_MECH_NTLM) {
+ Curl_ntlm_sspi_cleanup(&conn->ntlm);
+ }
+#endif
+#else
+ /* Reserved for future use */
+ (void)conn;
+ (void)authused;
+#endif
+}