* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
- * Copyright (C) 2012 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 2012 - 2015, 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
#include "curl_hmac.h"
#include "curl_sasl.h"
#include "warnless.h"
-#include "curl_memory.h"
#include "strtok.h"
+#include "strequal.h"
#include "rawstr.h"
+#include "sendf.h"
#include "non-ascii.h" /* included for Curl_convert_... prototypes */
+#include "curl_printf.h"
-#define _MPRINTF_REPLACE /* use our functions only */
-#include <curl/mprintf.h>
-
-/* The last #include file should be: */
+/* The last #include files should be: */
+#include "curl_memory.h"
#include "memdebug.h"
+/* Supported mechanisms */
+const struct {
+ const char *name; /* Name */
+ size_t len; /* Name length */
+ unsigned int bit; /* Flag bit */
+} mechtable[] = {
+ { "LOGIN", 5, SASL_MECH_LOGIN },
+ { "PLAIN", 5, SASL_MECH_PLAIN },
+ { "CRAM-MD5", 8, SASL_MECH_CRAM_MD5 },
+ { "DIGEST-MD5", 10, SASL_MECH_DIGEST_MD5 },
+ { "GSSAPI", 6, SASL_MECH_GSSAPI },
+ { "EXTERNAL", 8, SASL_MECH_EXTERNAL },
+ { "NTLM", 4, SASL_MECH_NTLM },
+ { "XOAUTH2", 7, SASL_MECH_XOAUTH2 },
+ { ZERO_NULL, 0, 0 }
+};
+
#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_STRING_AUTH_INT "auth-int"
#define DIGEST_QOP_VALUE_STRING_AUTH_CONF "auth-conf"
-#define DIGEST_MAX_VALUE_LENGTH 256
-#define DIGEST_MAX_CONTENT_LENGTH 1024
-
/* The CURL_OUTPUT_DIGEST_CONV macro below is for non-ASCII machines.
It converts digest text to ASCII so the MD5 will be correct for
what ultimately goes over the network.
return result; \
}
+#endif
+
+#if !defined(CURL_DISABLE_CRYPTO_AUTH)
/*
- * Return 0 on success and then the buffers are filled in fine.
+ * Returns 0 on success and then the buffers are filled in fine.
*
* Non-zero means failure to parse.
*/
-static int sasl_digest_get_pair(const char *str, char *value, char *content,
- const char **endptr)
+int Curl_sasl_digest_get_pair(const char *str, char *value, char *content,
+ const char **endptr)
{
int c;
bool starts_with_quote = FALSE;
return 0; /* all is fine! */
}
+#endif
+#if !defined(CURL_DISABLE_CRYPTO_AUTH) && !defined(USE_WINDOWS_SSPI)
/* Convert md5 chunk to RFC2617 (section 3.1.3) -suitable ascii string*/
static void sasl_digest_md5_to_ascii(unsigned char *source, /* 16 bytes */
unsigned char *dest) /* 33 bytes */
token = strtok_r(NULL, ",", &tok_buf);
}
- Curl_safefree(tmp);
+ free(tmp);
return CURLE_OK;
}
*
* Parameters:
*
- * serivce [in] - The service type such as www, smtp, pop or imap.
+ * service [in] - The service type such as www, smtp, pop or imap.
* host [in] - The host name or realm.
*
* Returns a pointer to the newly allocated SPN.
#endif
/*
- * Curl_sasl_create_plain_message()
+ * sasl_create_plain_message()
*
* This is used to generate an already encoded PLAIN message ready
* for sending to the recipient.
*
* 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)
+static CURLcode sasl_create_plain_message(struct SessionHandle *data,
+ const char *userp,
+ const char *passwdp,
+ char **outptr, size_t *outlen)
{
CURLcode result;
char *plainauth;
/* Base64 encode the reply */
result = Curl_base64_encode(data, plainauth, 2 * ulen + plen + 2, outptr,
outlen);
- Curl_safefree(plainauth);
+ free(plainauth);
return result;
}
/*
- * Curl_sasl_create_login_message()
+ * 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.
*
* Returns CURLE_OK on success.
*/
-CURLcode Curl_sasl_create_login_message(struct SessionHandle *data,
- const char *valuep, char **outptr,
- size_t *outlen)
+static CURLcode sasl_create_login_message(struct SessionHandle *data,
+ const char *valuep, char **outptr,
+ size_t *outlen)
{
size_t vlen = strlen(valuep);
return Curl_base64_encode(data, valuep, vlen, outptr, outlen);
}
+/*
+ * sasl_create_external_message()
+ *
+ * This is used to generate an already encoded EXTERNAL message containing
+ * the user name ready for sending to the recipient.
+ *
+ * Parameters:
+ *
+ * data [in] - The session handle.
+ * user [in] - The user name.
+ * 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.
+ */
+static CURLcode sasl_create_external_message(struct SessionHandle *data,
+ const char *user, char **outptr,
+ size_t *outlen)
+{
+ /* This is the same formatting as the login message. */
+ return sasl_create_login_message(data, user, outptr, outlen);
+}
+
#ifndef CURL_DISABLE_CRYPTO_AUTH
/*
- * Curl_sasl_decode_cram_md5_message()
+ * sasl_decode_cram_md5_message()
*
* This is used to decode an already encoded CRAM-MD5 challenge message.
*
*
* Returns CURLE_OK on success.
*/
-CURLcode Curl_sasl_decode_cram_md5_message(const char *chlg64, char **outptr,
- size_t *outlen)
+static CURLcode sasl_decode_cram_md5_message(const char *chlg64, char **outptr,
+ size_t *outlen)
{
CURLcode result = CURLE_OK;
size_t chlg64len = strlen(chlg64);
}
/*
- * Curl_sasl_create_cram_md5_message()
+ * sasl_create_cram_md5_message()
*
* This is used to generate an already encoded CRAM-MD5 response message ready
* for sending to the recipient.
*
* 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)
+static CURLcode 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;
/* Base64 encode the response */
result = Curl_base64_encode(data, response, 0, outptr, outlen);
- Curl_safefree(response);
+ free(response);
return result;
}
/* Retrieve nonce string from the challenge */
if(!sasl_digest_get_key_value((char *)chlg, "nonce=\"", nonce, nlen, '\"')) {
- Curl_safefree(chlg);
+ free(chlg);
return CURLE_BAD_CONTENT_ENCODING;
}
/* Retrieve algorithm string from the challenge */
if(!sasl_digest_get_key_value((char *)chlg, "algorithm=", alg, alen, ',')) {
- Curl_safefree(chlg);
+ free(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);
+ free(chlg);
return CURLE_BAD_CONTENT_ENCODING;
}
- Curl_safefree(chlg);
+ free(chlg);
return CURLE_OK;
}
/* Calculate H(A2) */
ctxt = Curl_MD5_init(Curl_DIGEST_MD5);
if(!ctxt) {
- Curl_safefree(spn);
+ free(spn);
return CURLE_OUT_OF_MEMORY;
}
/* Now calculate the response hash */
ctxt = Curl_MD5_init(Curl_DIGEST_MD5);
if(!ctxt) {
- Curl_safefree(spn);
+ free(spn);
return CURLE_OUT_OF_MEMORY;
}
"qop=%s",
userp, realm, nonce,
cnonce, nonceCount, spn, resp_hash_hex, qop);
- Curl_safefree(spn);
+ free(spn);
if(!response)
return CURLE_OUT_OF_MEMORY;
/* Base64 encode the response */
result = Curl_base64_encode(data, response, 0, outptr, outlen);
- Curl_safefree(response);
+ free(response);
return result;
}
chlg++;
/* Extract a value=content pair */
- if(!sasl_digest_get_pair(chlg, value, content, &chlg)) {
+ if(!Curl_sasl_digest_get_pair(chlg, value, content, &chlg)) {
if(Curl_raw_equal(value, "nonce")) {
digest->nonce = strdup(content);
if(!digest->nonce)
CURL_OUTPUT_DIGEST_CONV(data, md5this); /* convert on non-ASCII machines */
Curl_md5it(md5buf, md5this);
- Curl_safefree(md5this);
+ free(md5this);
sasl_digest_md5_to_ascii(md5buf, ha1);
if(digest->algo == CURLDIGESTALGO_MD5SESS) {
CURL_OUTPUT_DIGEST_CONV(data, tmp); /* convert on non-ASCII machines */
Curl_md5it(md5buf, (unsigned char *)tmp);
- Curl_safefree(tmp);
+ free(tmp);
sasl_digest_md5_to_ascii(md5buf, ha1);
}
TODO: replace md5 of empty string with entity-body for PUT/POST */
unsigned char *md5this2 = (unsigned char *)
aprintf("%s:%s", md5this, "d41d8cd98f00b204e9800998ecf8427e");
- Curl_safefree(md5this);
+ free(md5this);
md5this = md5this2;
}
CURL_OUTPUT_DIGEST_CONV(data, md5this); /* convert on non-ASCII machines */
Curl_md5it(md5buf, md5this);
- Curl_safefree(md5this);
+ free(md5this);
sasl_digest_md5_to_ascii(md5buf, ha2);
if(digest->qop) {
CURL_OUTPUT_DIGEST_CONV(data, md5this); /* convert on non-ASCII machines */
Curl_md5it(md5buf, md5this);
- Curl_safefree(md5this);
+ free(md5this);
sasl_digest_md5_to_ascii(md5buf, request_digest);
/* for test case 64 (snooped from a Mozilla 1.3a request)
uripath,
request_digest);
}
- Curl_safefree(userp_quoted);
+ free(userp_quoted);
if(!response)
return CURLE_OUT_OF_MEMORY;
#endif /* USE_NTLM && !USE_WINDOWS_SSPI*/
/*
- * Curl_sasl_create_xoauth2_message()
+ * sasl_create_xoauth2_message()
*
* This is used to generate an already encoded OAuth 2.0 message ready for
* sending to the recipient.
*
* 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)
+static CURLcode 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;
/* Base64 encode the reply */
result = Curl_base64_encode(data, xoauth, strlen(xoauth), outptr, outlen);
- Curl_safefree(xoauth);
+ free(xoauth);
return result;
}
(void)authused;
#endif
}
+
+/*
+ * Curl_sasl_decode_mech()
+ *
+ * Convert a SASL mechanism name into a token.
+ *
+ * Parameters:
+ *
+ * ptr [in] - The mechanism string.
+ * maxlen [in] - Maximum mechanism string length.
+ * len [out] - If not NULL, effective name length.
+ *
+ * Returns the SASL mechanism token or 0 if no match.
+ */
+unsigned int Curl_sasl_decode_mech(const char *ptr, size_t maxlen, size_t *len)
+{
+ unsigned int i;
+ char c;
+
+ for(i = 0; mechtable[i].name; i++) {
+ if(maxlen >= mechtable[i].len &&
+ !memcmp(ptr, mechtable[i].name, mechtable[i].len)) {
+ if(len)
+ *len = mechtable[i].len;
+
+ if(maxlen == mechtable[i].len)
+ return mechtable[i].bit;
+
+ c = ptr[mechtable[i].len];
+ if(!ISUPPER(c) && !ISDIGIT(c) && c != '-' && c != '_')
+ return mechtable[i].bit;
+ }
+ }
+
+ return 0;
+}
+
+/*
+ * Curl_sasl_parse_url_auth_option()
+ *
+ * Parse the URL login options.
+ */
+CURLcode Curl_sasl_parse_url_auth_option(struct SASL *sasl,
+ const char *value, size_t len)
+{
+ CURLcode result = CURLE_OK;
+ unsigned int mechbit;
+ size_t mechlen;
+
+ if(!len)
+ return CURLE_URL_MALFORMAT;
+
+ if(sasl->resetprefs) {
+ sasl->resetprefs = FALSE;
+ sasl->prefmech = SASL_AUTH_NONE;
+ }
+
+ if(strnequal(value, "*", len))
+ sasl->prefmech = SASL_AUTH_DEFAULT;
+ else if((mechbit = Curl_sasl_decode_mech(value, len, &mechlen)) &&
+ mechlen == len)
+ sasl->prefmech |= mechbit;
+ else
+ result = CURLE_URL_MALFORMAT;
+
+ return result;
+}
+
+/*
+ * Curl_sasl_init()
+ *
+ * Initializes the SASL structure.
+ */
+void Curl_sasl_init(struct SASL *sasl, const struct SASLproto *params)
+{
+ sasl->params = params; /* Set protocol dependent parameters */
+ sasl->state = SASL_STOP; /* Not yet running */
+ sasl->authmechs = SASL_AUTH_NONE; /* No known authentication mechanism yet */
+ sasl->prefmech = SASL_AUTH_DEFAULT; /* Prefer all mechanisms */
+ sasl->authused = SASL_AUTH_NONE; /* No the authentication mechanism used */
+ sasl->resetprefs = TRUE; /* Reset prefmech upon AUTH parsing. */
+ sasl->mutual_auth = FALSE; /* No mutual authentication (GSSAPI only) */
+ sasl->force_ir = FALSE; /* Respect external option */
+}
+
+/*
+ * state()
+ *
+ * This is the ONLY way to change SASL state!
+ */
+static void state(struct SASL *sasl, struct connectdata *conn,
+ saslstate newstate)
+{
+#if defined(DEBUGBUILD) && !defined(CURL_DISABLE_VERBOSE_STRINGS)
+ /* for debug purposes */
+ static const char * const names[]={
+ "STOP",
+ "PLAIN",
+ "LOGIN",
+ "LOGIN_PASSWD",
+ "EXTERNAL",
+ "CRAMMD5",
+ "DIGESTMD5",
+ "DIGESTMD5_RESP",
+ "NTLM",
+ "NTLM_TYPE2MSG",
+ "GSSAPI",
+ "GSSAPI_TOKEN",
+ "GSSAPI_NO_DATA",
+ "XOAUTH2",
+ "CANCEL",
+ "FINAL",
+ /* LAST */
+ };
+
+ if(sasl->state != newstate)
+ infof(conn->data, "SASL %p state change from %s to %s\n",
+ (void *)sasl, names[sasl->state], names[newstate]);
+#else
+ (void) conn;
+#endif
+
+ sasl->state = newstate;
+}
+
+/*
+ * Curl_sasl_can_authenticate()
+ *
+ * Check if we have enough auth data and capabilities to authenticate.
+ */
+bool Curl_sasl_can_authenticate(struct SASL *sasl, struct connectdata *conn)
+{
+ /* Have credentials been provided? */
+ if(conn->bits.user_passwd)
+ return TRUE;
+
+ /* EXTERNAL can authenticate without a user name and/or password */
+ if(sasl->authmechs & sasl->prefmech & SASL_MECH_EXTERNAL)
+ return TRUE;
+
+ return FALSE;
+}
+
+/*
+ * Curl_sasl_start()
+ *
+ * Calculate the required login details for SASL authentication.
+ */
+CURLcode Curl_sasl_start(struct SASL *sasl, struct connectdata *conn,
+ bool force_ir, saslprogress *progress)
+{
+ CURLcode result = CURLE_OK;
+ struct SessionHandle *data = conn->data;
+ unsigned int enabledmechs;
+ const char *mech = NULL;
+ char *resp = NULL;
+ size_t len = 0;
+ saslstate state1 = SASL_STOP;
+ saslstate state2 = SASL_FINAL;
+
+ sasl->force_ir = force_ir; /* Latch for future use */
+ sasl->authused = 0; /* No mechanism used yet */
+ enabledmechs = sasl->authmechs & sasl->prefmech;
+ *progress = SASL_IDLE;
+
+ /* Calculate the supported authentication mechanism, by decreasing order of
+ security, as well as the initial response where appropriate */
+ if((enabledmechs & SASL_MECH_EXTERNAL) && !conn->passwd[0]) {
+ mech = SASL_MECH_STRING_EXTERNAL;
+ state1 = SASL_EXTERNAL;
+ sasl->authused = SASL_MECH_EXTERNAL;
+
+ if(force_ir || data->set.sasl_ir)
+ result = sasl_create_external_message(data, conn->user, &resp, &len);
+ }
+ else if(conn->bits.user_passwd) {
+#if defined(USE_KERBEROS5)
+ if(enabledmechs & SASL_MECH_GSSAPI) {
+ sasl->mutual_auth = FALSE; /* TODO: Calculate mutual authentication */
+ mech = SASL_MECH_STRING_GSSAPI;
+ state1 = SASL_GSSAPI;
+ state2 = SASL_GSSAPI_TOKEN;
+ sasl->authused = SASL_MECH_GSSAPI;
+
+ if(force_ir || data->set.sasl_ir)
+ result = Curl_sasl_create_gssapi_user_message(data, conn->user,
+ conn->passwd,
+ sasl->params->service,
+ sasl->mutual_auth,
+ NULL, &conn->krb5,
+ &resp, &len);
+ }
+ else
+#endif
+#ifndef CURL_DISABLE_CRYPTO_AUTH
+ if(enabledmechs & SASL_MECH_DIGEST_MD5) {
+ mech = SASL_MECH_STRING_DIGEST_MD5;
+ state1 = SASL_DIGESTMD5;
+ sasl->authused = SASL_MECH_DIGEST_MD5;
+ }
+ else if(enabledmechs & SASL_MECH_CRAM_MD5) {
+ mech = SASL_MECH_STRING_CRAM_MD5;
+ state1 = SASL_CRAMMD5;
+ sasl->authused = SASL_MECH_CRAM_MD5;
+ }
+ else
+#endif
+#ifdef USE_NTLM
+ if(enabledmechs & SASL_MECH_NTLM) {
+ mech = SASL_MECH_STRING_NTLM;
+ state1 = SASL_NTLM;
+ state2 = SASL_NTLM_TYPE2MSG;
+ sasl->authused = SASL_MECH_NTLM;
+
+ if(force_ir || data->set.sasl_ir)
+ result = Curl_sasl_create_ntlm_type1_message(conn->user, conn->passwd,
+ &conn->ntlm, &resp, &len);
+ }
+ else
+#endif
+ if((enabledmechs & SASL_MECH_XOAUTH2) || conn->xoauth2_bearer) {
+ mech = SASL_MECH_STRING_XOAUTH2;
+ state1 = SASL_XOAUTH2;
+ sasl->authused = SASL_MECH_XOAUTH2;
+
+ if(force_ir || data->set.sasl_ir)
+ result = sasl_create_xoauth2_message(data, conn->user,
+ conn->xoauth2_bearer,
+ &resp, &len);
+ }
+ else if(enabledmechs & SASL_MECH_LOGIN) {
+ mech = SASL_MECH_STRING_LOGIN;
+ state1 = SASL_LOGIN;
+ state2 = SASL_LOGIN_PASSWD;
+ sasl->authused = SASL_MECH_LOGIN;
+
+ if(force_ir || data->set.sasl_ir)
+ result = sasl_create_login_message(data, conn->user, &resp, &len);
+ }
+ else if(enabledmechs & SASL_MECH_PLAIN) {
+ mech = SASL_MECH_STRING_PLAIN;
+ state1 = SASL_PLAIN;
+ sasl->authused = SASL_MECH_PLAIN;
+
+ if(force_ir || data->set.sasl_ir)
+ result = sasl_create_plain_message(data, conn->user, conn->passwd,
+ &resp, &len);
+ }
+ }
+
+ if(!result) {
+ if(resp && sasl->params->maxirlen &&
+ strlen(mech) + len > sasl->params->maxirlen) {
+ free(resp);
+ resp = NULL;
+ }
+
+ if(mech) {
+ result = sasl->params->sendauth(conn, mech, resp);
+ if(!result) {
+ *progress = SASL_INPROGRESS;
+ state(sasl, conn, resp? state2: state1);
+ }
+ }
+ }
+
+ free(resp);
+
+ return result;
+}
+
+/*
+ * Curl_sasl_continue()
+ *
+ * Continue the authentication.
+ */
+CURLcode Curl_sasl_continue(struct SASL *sasl, struct connectdata *conn,
+ int code, saslprogress *progress)
+{
+ CURLcode result = CURLE_OK;
+ struct SessionHandle *data = conn->data;
+ saslstate newstate = SASL_FINAL;
+ char *resp = NULL;
+#if !defined(CURL_DISABLE_CRYPTO_AUTH)
+ char *serverdata;
+ char *chlg = NULL;
+ size_t chlglen = 0;
+#endif
+ size_t len = 0;
+
+ *progress = SASL_INPROGRESS;
+
+ if(sasl->state == SASL_FINAL) {
+ if(code != sasl->params->finalcode)
+ result = CURLE_LOGIN_DENIED;
+ *progress = SASL_DONE;
+ state(sasl, conn, SASL_STOP);
+ return result;
+ }
+
+ if(sasl->state != SASL_CANCEL && code != sasl->params->contcode) {
+ *progress = SASL_DONE;
+ state(sasl, conn, SASL_STOP);
+ return CURLE_LOGIN_DENIED;
+ }
+
+ switch(sasl->state) {
+ case SASL_STOP:
+ *progress = SASL_DONE;
+ return result;
+ case SASL_PLAIN:
+ result = sasl_create_plain_message(data, conn->user, conn->passwd, &resp,
+ &len);
+ break;
+ case SASL_LOGIN:
+ result = sasl_create_login_message(data, conn->user, &resp, &len);
+ newstate = SASL_LOGIN_PASSWD;
+ break;
+ case SASL_LOGIN_PASSWD:
+ result = sasl_create_login_message(data, conn->passwd, &resp, &len);
+ break;
+ case SASL_EXTERNAL:
+ result = sasl_create_external_message(data, conn->user, &resp, &len);
+ break;
+
+#ifndef CURL_DISABLE_CRYPTO_AUTH
+ case SASL_CRAMMD5:
+ sasl->params->getmessage(data->state.buffer, &serverdata);
+ result = sasl_decode_cram_md5_message(serverdata, &chlg, &chlglen);
+ if(!result)
+ result = sasl_create_cram_md5_message(data, chlg, conn->user,
+ conn->passwd, &resp, &len);
+ free(chlg);
+ break;
+ case SASL_DIGESTMD5:
+ sasl->params->getmessage(data->state.buffer, &serverdata);
+ result = Curl_sasl_create_digest_md5_message(data, serverdata,
+ conn->user, conn->passwd,
+ sasl->params->service,
+ &resp, &len);
+ newstate = SASL_DIGESTMD5_RESP;
+ break;
+ case SASL_DIGESTMD5_RESP:
+ if(!(resp = strdup("")))
+ result = CURLE_OUT_OF_MEMORY;
+ break;
+#endif
+
+#ifdef USE_NTLM
+ case SASL_NTLM:
+ /* Create the type-1 message */
+ result = Curl_sasl_create_ntlm_type1_message(conn->user, conn->passwd,
+ &conn->ntlm, &resp, &len);
+ newstate = SASL_NTLM_TYPE2MSG;
+ break;
+ case SASL_NTLM_TYPE2MSG:
+ /* Decode the type-2 message */
+ sasl->params->getmessage(data->state.buffer, &serverdata);
+ result = Curl_sasl_decode_ntlm_type2_message(data, serverdata,
+ &conn->ntlm);
+ if(!result)
+ result = Curl_sasl_create_ntlm_type3_message(data, conn->user,
+ conn->passwd, &conn->ntlm,
+ &resp, &len);
+ break;
+#endif
+
+#if defined(USE_KERBEROS5)
+ case SASL_GSSAPI:
+ result = Curl_sasl_create_gssapi_user_message(data, conn->user,
+ conn->passwd,
+ sasl->params->service,
+ sasl->mutual_auth, NULL,
+ &conn->krb5,
+ &resp, &len);
+ newstate = SASL_GSSAPI_TOKEN;
+ break;
+ case SASL_GSSAPI_TOKEN:
+ sasl->params->getmessage(data->state.buffer, &serverdata);
+ if(sasl->mutual_auth) {
+ /* Decode the user token challenge and create the optional response
+ message */
+ result = Curl_sasl_create_gssapi_user_message(data, NULL, NULL, NULL,
+ sasl->mutual_auth,
+ serverdata, &conn->krb5,
+ &resp, &len);
+ newstate = SASL_GSSAPI_NO_DATA;
+ }
+ else
+ /* Decode the security challenge and create the response message */
+ result = Curl_sasl_create_gssapi_security_message(data, serverdata,
+ &conn->krb5,
+ &resp, &len);
+ break;
+ case SASL_GSSAPI_NO_DATA:
+ sasl->params->getmessage(data->state.buffer, &serverdata);
+ /* Decode the security challenge and create the response message */
+ result = Curl_sasl_create_gssapi_security_message(data, serverdata,
+ &conn->krb5,
+ &resp, &len);
+ break;
+#endif
+
+ case SASL_XOAUTH2:
+ /* Create the authorisation message */
+ result = sasl_create_xoauth2_message(data, conn->user,
+ conn->xoauth2_bearer, &resp, &len);
+ break;
+ case SASL_CANCEL:
+ /* Remove the offending mechanism from the supported list */
+ sasl->authmechs ^= sasl->authused;
+
+ /* Start an alternative SASL authentication */
+ result = Curl_sasl_start(sasl, conn, sasl->force_ir, progress);
+ newstate = sasl->state; /* Use state from Curl_sasl_start() */
+ break;
+ default:
+ failf(data, "Unsupported SASL authentication mechanism");
+ result = CURLE_UNSUPPORTED_PROTOCOL; /* Should not happen */
+ break;
+ }
+
+ switch(result) {
+ case CURLE_BAD_CONTENT_ENCODING:
+ /* Cancel dialog */
+ result = sasl->params->sendcont(conn, "*");
+ newstate = SASL_CANCEL;
+ break;
+ case CURLE_OK:
+ if(resp)
+ result = sasl->params->sendcont(conn, resp);
+ break;
+ default:
+ newstate = SASL_STOP; /* Stop on error */
+ *progress = SASL_DONE;
+ break;
+ }
+
+ free(resp);
+
+ state(sasl, conn, newstate);
+
+ return result;
+}
projects / platform / upstream / curl.git / blobdiff