* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
- * Copyright (C) 1998 - 2015, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 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
#include "curl_gethostname.h"
#include "curl_sasl.h"
#include "warnless.h"
-#include "curl_printf.h"
+
+#define _MPRINTF_REPLACE /* use our functions only */
+#include <curl/mprintf.h>
+
#include "curl_memory.h"
/* The last #include file should be: */
#include "memdebug.h"
static CURLcode smtp_parse_url_options(struct connectdata *conn);
static CURLcode smtp_parse_url_path(struct connectdata *conn);
static CURLcode smtp_parse_custom_request(struct connectdata *conn);
-static CURLcode smtp_perform_auth(struct connectdata *conn, const char *mech,
- const char *initresp);
-static CURLcode smtp_continue_auth(struct connectdata *conn, const char *resp);
-static void smtp_get_message(char *buffer, char** outptr);
+static CURLcode smtp_calc_sasl_details(struct connectdata *conn,
+ const char **mech,
+ char **initresp, size_t *len,
+ smtpstate *state1, smtpstate *state2);
/*
* SMTP protocol handler.
#endif
#endif
-/* SASL parameters for the smtp protocol */
-static const struct SASLproto saslsmtp = {
- "smtp", /* The service name */
- 334, /* Code received when continuation is expected */
- 235, /* Code to receive upon authentication success */
- 512 - 8, /* Maximum initial response length (no max) */
- smtp_perform_auth, /* Send authentication command */
- smtp_continue_auth, /* Send authentication continuation */
- smtp_get_message /* Get SASL response message */
-};
-
#ifdef USE_SSL
static void smtp_to_smtps(struct connectdata *conn)
{
"HELO",
"STARTTLS",
"UPGRADETLS",
- "AUTH",
+ "AUTH_PLAIN",
+ "AUTH_LOGIN",
+ "AUTH_LOGIN_PASSWD",
+ "AUTH_CRAMMD5",
+ "AUTH_DIGESTMD5",
+ "AUTH_DIGESTMD5_RESP",
+ "AUTH_NTLM",
+ "AUTH_NTLM_TYPE2MSG",
+ "AUTH_GSSAPI",
+ "AUTH_GSSAPI_TOKEN",
+ "AUTH_GSSAPI_NO_DATA",
+ "AUTH_XOAUTH2",
+ "AUTH_CANCEL",
+ "AUTH_FINAL",
"COMMAND",
"MAIL",
"RCPT",
CURLcode result = CURLE_OK;
struct smtp_conn *smtpc = &conn->proto.smtpc;
- smtpc->sasl.authmechs = SASL_AUTH_NONE; /* No known auth. mechanism yet */
- smtpc->sasl.authused = SASL_AUTH_NONE; /* Clear the authentication mechanism
- used for esmtp connections */
- smtpc->tls_supported = FALSE; /* Clear the TLS capability */
- smtpc->auth_supported = FALSE; /* Clear the AUTH capability */
+ smtpc->authmechs = 0; /* No known authentication mechanisms yet */
+ smtpc->authused = 0; /* Clear the authentication mechanism used
+ for esmtp connections */
+ smtpc->tls_supported = FALSE; /* Clear the TLS capability */
+ smtpc->auth_supported = FALSE; /* Clear the AUTH capability */
/* Send the EHLO command */
result = Curl_pp_sendf(&smtpc->pp, "EHLO %s", smtpc->domain);
CURLcode result = CURLE_OK;
struct smtp_conn *smtpc = &conn->proto.smtpc;
- smtpc->sasl.authused = SASL_AUTH_NONE; /* No authentication mechanism used
- in smtp connections */
+ smtpc->authused = 0; /* No authentication mechanism used in smtp
+ connections */
/* Send the HELO command */
result = Curl_pp_sendf(&smtpc->pp, "HELO %s", smtpc->domain);
*/
static CURLcode smtp_perform_auth(struct connectdata *conn,
const char *mech,
- const char *initresp)
+ const char *initresp, size_t len,
+ smtpstate state1, smtpstate state2)
{
CURLcode result = CURLE_OK;
struct smtp_conn *smtpc = &conn->proto.smtpc;
- if(initresp) { /* AUTH <mech> ...<crlf> */
+ if(initresp && 8 + strlen(mech) + len <= 512) { /* AUTH <mech> ...<crlf> */
/* Send the AUTH command with the initial response */
result = Curl_pp_sendf(&smtpc->pp, "AUTH %s %s", mech, initresp);
+
+ if(!result)
+ state(conn, state2);
}
else {
/* Send the AUTH command */
result = Curl_pp_sendf(&smtpc->pp, "AUTH %s", mech);
+
+ if(!result)
+ state(conn, state1);
}
return result;
/***********************************************************************
*
- * smtp_continue_auth()
- *
- * Sends SASL continuation data or cancellation.
- */
-static CURLcode smtp_continue_auth(struct connectdata *conn, const char *resp)
-{
- struct smtp_conn *smtpc = &conn->proto.smtpc;
-
- return Curl_pp_sendf(&smtpc->pp, "%s", resp);
-}
-
-/***********************************************************************
- *
* smtp_perform_authentication()
*
* Initiates the authentication sequence, with the appropriate SASL
{
CURLcode result = CURLE_OK;
struct smtp_conn *smtpc = &conn->proto.smtpc;
- saslprogress progress;
+ const char *mech = NULL;
+ char *initresp = NULL;
+ size_t len = 0;
+ smtpstate state1 = SMTP_STOP;
+ smtpstate state2 = SMTP_STOP;
- /* Check we have enough data to authenticate with, and the
+ /* Check we have a username and password to authenticate with, and the
server supports authentiation, and end the connect phase if not */
- if(!smtpc->auth_supported ||
- !Curl_sasl_can_authenticate(&smtpc->sasl, conn)) {
+ if(!conn->bits.user_passwd || !smtpc->auth_supported) {
state(conn, SMTP_STOP);
+
return result;
}
/* Calculate the SASL login details */
- result = Curl_sasl_start(&smtpc->sasl, conn, FALSE, &progress);
+ result = smtp_calc_sasl_details(conn, &mech, &initresp, &len, &state1,
+ &state2);
if(!result) {
- if(progress == SASL_INPROGRESS)
- state(conn, SMTP_AUTH);
+ if(mech) {
+ /* Perform SASL based authentication */
+ result = smtp_perform_auth(conn, mech, initresp, len, state1, state2);
+
+ Curl_safefree(initresp);
+ }
else {
/* Other mechanisms not supported */
infof(conn->data, "No known authentication mechanisms supported!\n");
return CURLE_OUT_OF_MEMORY;
/* Calculate the optional AUTH parameter */
- if(data->set.str[STRING_MAIL_AUTH] && conn->proto.smtpc.sasl.authused) {
+ if(data->set.str[STRING_MAIL_AUTH] && conn->proto.smtpc.authused) {
if(data->set.str[STRING_MAIL_AUTH][0] != '\0')
auth = aprintf("%s", data->set.str[STRING_MAIL_AUTH]);
else
auth = strdup("<>");
if(!auth) {
- free(from);
+ Curl_safefree(from);
return CURLE_OUT_OF_MEMORY;
}
size = aprintf("%" CURL_FORMAT_CURL_OFF_T, data->state.infilesize);
if(!size) {
- free(from);
- free(auth);
+ Curl_safefree(from);
+ Curl_safefree(auth);
return CURLE_OUT_OF_MEMORY;
}
result = Curl_pp_sendf(&conn->proto.smtpc.pp,
"MAIL FROM:%s SIZE=%s", from, size);
- free(from);
- free(auth);
- free(size);
+ Curl_safefree(from);
+ Curl_safefree(auth);
+ Curl_safefree(size);
if(!result)
state(conn, SMTP_MAIL);
/* Loop through the data line */
for(;;) {
- size_t llen;
- unsigned int mechbit;
-
while(len &&
(*line == ' ' || *line == '\t' ||
*line == '\r' || *line == '\n')) {
wordlen++;
/* Test the word for a matching authentication mechanism */
- if((mechbit = Curl_sasl_decode_mech(line, wordlen, &llen)) &&
- llen == wordlen)
- smtpc->sasl.authmechs |= mechbit;
+ if(sasl_mech_equal(line, wordlen, SASL_MECH_STRING_LOGIN))
+ smtpc->authmechs |= SASL_MECH_LOGIN;
+ else if(sasl_mech_equal(line, wordlen, SASL_MECH_STRING_PLAIN))
+ smtpc->authmechs |= SASL_MECH_PLAIN;
+ else if(sasl_mech_equal(line, wordlen, SASL_MECH_STRING_CRAM_MD5))
+ smtpc->authmechs |= SASL_MECH_CRAM_MD5;
+ else if(sasl_mech_equal(line, wordlen, SASL_MECH_STRING_DIGEST_MD5))
+ smtpc->authmechs |= SASL_MECH_DIGEST_MD5;
+ else if(sasl_mech_equal(line, wordlen, SASL_MECH_STRING_GSSAPI))
+ smtpc->authmechs |= SASL_MECH_GSSAPI;
+ else if(sasl_mech_equal(line, wordlen, SASL_MECH_STRING_EXTERNAL))
+ smtpc->authmechs |= SASL_MECH_EXTERNAL;
+ else if(sasl_mech_equal(line, wordlen, SASL_MECH_STRING_NTLM))
+ smtpc->authmechs |= SASL_MECH_NTLM;
+ else if(sasl_mech_equal(line, wordlen, SASL_MECH_STRING_XOAUTH2))
+ smtpc->authmechs |= SASL_MECH_XOAUTH2;
line += wordlen;
len -= wordlen;
return result;
}
-/* For SASL authentication responses */
-static CURLcode smtp_state_auth_resp(struct connectdata *conn,
- int smtpcode,
- smtpstate instate)
+/* For AUTH PLAIN (without initial response) responses */
+static CURLcode smtp_state_auth_plain_resp(struct connectdata *conn,
+ int smtpcode,
+ smtpstate instate)
+{
+ CURLcode result = CURLE_OK;
+ struct SessionHandle *data = conn->data;
+ size_t len = 0;
+ char *plainauth = NULL;
+
+ (void)instate; /* no use for this yet */
+
+ if(smtpcode != 334) {
+ failf(data, "Access denied: %d", smtpcode);
+ result = CURLE_LOGIN_DENIED;
+ }
+ else {
+ /* Create the authorisation message */
+ result = Curl_sasl_create_plain_message(conn->data, conn->user,
+ conn->passwd, &plainauth, &len);
+ if(!result && plainauth) {
+ /* Send the message */
+ result = Curl_pp_sendf(&conn->proto.smtpc.pp, "%s", plainauth);
+
+ if(!result)
+ state(conn, SMTP_AUTH_FINAL);
+ }
+ }
+
+ Curl_safefree(plainauth);
+
+ return result;
+}
+
+/* For AUTH LOGIN (without initial response) responses */
+static CURLcode smtp_state_auth_login_resp(struct connectdata *conn,
+ int smtpcode,
+ smtpstate instate)
+{
+ CURLcode result = CURLE_OK;
+ struct SessionHandle *data = conn->data;
+ size_t len = 0;
+ char *authuser = NULL;
+
+ (void)instate; /* no use for this yet */
+
+ if(smtpcode != 334) {
+ failf(data, "Access denied: %d", smtpcode);
+ result = CURLE_LOGIN_DENIED;
+ }
+ else {
+ /* Create the user message */
+ result = Curl_sasl_create_login_message(conn->data, conn->user,
+ &authuser, &len);
+ if(!result && authuser) {
+ /* Send the user */
+ result = Curl_pp_sendf(&conn->proto.smtpc.pp, "%s", authuser);
+
+ if(!result)
+ state(conn, SMTP_AUTH_LOGIN_PASSWD);
+ }
+ }
+
+ Curl_safefree(authuser);
+
+ return result;
+}
+
+/* For AUTH LOGIN user entry responses */
+static CURLcode smtp_state_auth_login_password_resp(struct connectdata *conn,
+ int smtpcode,
+ smtpstate instate)
+{
+ CURLcode result = CURLE_OK;
+ struct SessionHandle *data = conn->data;
+ size_t len = 0;
+ char *authpasswd = NULL;
+
+ (void)instate; /* no use for this yet */
+
+ if(smtpcode != 334) {
+ failf(data, "Access denied: %d", smtpcode);
+ result = CURLE_LOGIN_DENIED;
+ }
+ else {
+ /* Create the password message */
+ result = Curl_sasl_create_login_message(conn->data, conn->passwd,
+ &authpasswd, &len);
+ if(!result && authpasswd) {
+ /* Send the password */
+ result = Curl_pp_sendf(&conn->proto.smtpc.pp, "%s", authpasswd);
+
+ if(!result)
+ state(conn, SMTP_AUTH_FINAL);
+ }
+ }
+
+ Curl_safefree(authpasswd);
+
+ return result;
+}
+
+#ifndef CURL_DISABLE_CRYPTO_AUTH
+/* For AUTH CRAM-MD5 responses */
+static CURLcode smtp_state_auth_cram_resp(struct connectdata *conn,
+ int smtpcode,
+ smtpstate instate)
+{
+ CURLcode result = CURLE_OK;
+ struct SessionHandle *data = conn->data;
+ char *chlg = NULL;
+ char *chlg64 = NULL;
+ char *rplyb64 = NULL;
+ size_t len = 0;
+
+ (void)instate; /* no use for this yet */
+
+ if(smtpcode != 334) {
+ failf(data, "Access denied: %d", smtpcode);
+ return CURLE_LOGIN_DENIED;
+ }
+
+ /* Get the challenge message */
+ smtp_get_message(data->state.buffer, &chlg64);
+
+ /* Decode the challenge message */
+ result = Curl_sasl_decode_cram_md5_message(chlg64, &chlg, &len);
+ if(result) {
+ /* Send the cancellation */
+ result = Curl_pp_sendf(&conn->proto.smtpc.pp, "%s", "*");
+
+ if(!result)
+ state(conn, SMTP_AUTH_CANCEL);
+ }
+ else {
+ /* Create the response message */
+ result = Curl_sasl_create_cram_md5_message(data, chlg, conn->user,
+ conn->passwd, &rplyb64, &len);
+ if(!result && rplyb64) {
+ /* Send the response */
+ result = Curl_pp_sendf(&conn->proto.smtpc.pp, "%s", rplyb64);
+
+ if(!result)
+ state(conn, SMTP_AUTH_FINAL);
+ }
+ }
+
+ Curl_safefree(chlg);
+ Curl_safefree(rplyb64);
+
+ return result;
+}
+
+/* For AUTH DIGEST-MD5 challenge responses */
+static CURLcode smtp_state_auth_digest_resp(struct connectdata *conn,
+ int smtpcode,
+ smtpstate instate)
+{
+ CURLcode result = CURLE_OK;
+ struct SessionHandle *data = conn->data;
+ char *chlg64 = NULL;
+ char *rplyb64 = NULL;
+ size_t len = 0;
+
+ (void)instate; /* no use for this yet */
+
+ if(smtpcode != 334) {
+ failf(data, "Access denied: %d", smtpcode);
+ return CURLE_LOGIN_DENIED;
+ }
+
+ /* Get the challenge message */
+ smtp_get_message(data->state.buffer, &chlg64);
+
+ /* Create the response message */
+ result = Curl_sasl_create_digest_md5_message(data, chlg64,
+ conn->user, conn->passwd,
+ "smtp", &rplyb64, &len);
+ if(result) {
+ if(result == CURLE_BAD_CONTENT_ENCODING) {
+ /* Send the cancellation */
+ result = Curl_pp_sendf(&conn->proto.smtpc.pp, "%s", "*");
+
+ if(!result)
+ state(conn, SMTP_AUTH_CANCEL);
+ }
+ }
+ else {
+ /* Send the response */
+ result = Curl_pp_sendf(&conn->proto.smtpc.pp, "%s", rplyb64);
+
+ if(!result)
+ state(conn, SMTP_AUTH_DIGESTMD5_RESP);
+ }
+
+ Curl_safefree(rplyb64);
+
+ return result;
+}
+
+/* For AUTH DIGEST-MD5 challenge-response responses */
+static CURLcode smtp_state_auth_digest_resp_resp(struct connectdata *conn,
+ int smtpcode,
+ smtpstate instate)
+{
+ CURLcode result = CURLE_OK;
+ struct SessionHandle *data = conn->data;
+
+ (void)instate; /* no use for this yet */
+
+ if(smtpcode != 334) {
+ failf(data, "Authentication failed: %d", smtpcode);
+ result = CURLE_LOGIN_DENIED;
+ }
+ else {
+ /* Send an empty response */
+ result = Curl_pp_sendf(&conn->proto.smtpc.pp, "%s", "");
+
+ if(!result)
+ state(conn, SMTP_AUTH_FINAL);
+ }
+
+ return result;
+}
+
+#endif
+
+#ifdef USE_NTLM
+/* For AUTH NTLM (without initial response) responses */
+static CURLcode smtp_state_auth_ntlm_resp(struct connectdata *conn,
+ int smtpcode,
+ smtpstate instate)
+{
+ CURLcode result = CURLE_OK;
+ struct SessionHandle *data = conn->data;
+ char *type1msg = NULL;
+ size_t len = 0;
+
+ (void)instate; /* no use for this yet */
+
+ if(smtpcode != 334) {
+ failf(data, "Access denied: %d", smtpcode);
+ result = CURLE_LOGIN_DENIED;
+ }
+ else {
+ /* Create the type-1 message */
+ result = Curl_sasl_create_ntlm_type1_message(conn->user, conn->passwd,
+ &conn->ntlm,
+ &type1msg, &len);
+ if(!result && type1msg) {
+ /* Send the message */
+ result = Curl_pp_sendf(&conn->proto.smtpc.pp, "%s", type1msg);
+
+ if(!result)
+ state(conn, SMTP_AUTH_NTLM_TYPE2MSG);
+ }
+ }
+
+ Curl_safefree(type1msg);
+
+ return result;
+}
+
+/* For NTLM type-2 responses (sent in reponse to our type-1 message) */
+static CURLcode smtp_state_auth_ntlm_type2msg_resp(struct connectdata *conn,
+ int smtpcode,
+ smtpstate instate)
+{
+ CURLcode result = CURLE_OK;
+ struct SessionHandle *data = conn->data;
+ char *type2msg = NULL;
+ char *type3msg = NULL;
+ size_t len = 0;
+
+ (void)instate; /* no use for this yet */
+
+ if(smtpcode != 334) {
+ failf(data, "Access denied: %d", smtpcode);
+ result = CURLE_LOGIN_DENIED;
+ }
+ else {
+ /* Get the type-2 message */
+ smtp_get_message(data->state.buffer, &type2msg);
+
+ /* Decode the type-2 message */
+ result = Curl_sasl_decode_ntlm_type2_message(data, type2msg, &conn->ntlm);
+ if(result) {
+ /* Send the cancellation */
+ result = Curl_pp_sendf(&conn->proto.smtpc.pp, "%s", "*");
+
+ if(!result)
+ state(conn, SMTP_AUTH_CANCEL);
+ }
+ else {
+ /* Create the type-3 message */
+ result = Curl_sasl_create_ntlm_type3_message(data, conn->user,
+ conn->passwd, &conn->ntlm,
+ &type3msg, &len);
+ if(!result && type3msg) {
+ /* Send the message */
+ result = Curl_pp_sendf(&conn->proto.smtpc.pp, "%s", type3msg);
+
+ if(!result)
+ state(conn, SMTP_AUTH_FINAL);
+ }
+ }
+ }
+
+ Curl_safefree(type3msg);
+
+ return result;
+}
+#endif
+
+#if defined(USE_KERBEROS5)
+/* For AUTH GSSAPI (without initial response) responses */
+static CURLcode smtp_state_auth_gssapi_resp(struct connectdata *conn,
+ int smtpcode,
+ smtpstate instate)
{
CURLcode result = CURLE_OK;
struct SessionHandle *data = conn->data;
struct smtp_conn *smtpc = &conn->proto.smtpc;
- saslprogress progress;
+ char *respmsg = NULL;
+ size_t len = 0;
(void)instate; /* no use for this yet */
- result = Curl_sasl_continue(&smtpc->sasl, conn, smtpcode, &progress);
- if(!result)
- switch(progress) {
- case SASL_DONE:
- state(conn, SMTP_STOP); /* Authenticated */
- break;
- case SASL_IDLE: /* No mechanism left after cancellation */
+ if(smtpcode != 334) {
+ failf(data, "Access denied: %d", smtpcode);
+ result = CURLE_LOGIN_DENIED;
+ }
+ else {
+ /* Create the initial response message */
+ result = Curl_sasl_create_gssapi_user_message(data, conn->user,
+ conn->passwd, "smtp",
+ smtpc->mutual_auth, NULL,
+ &conn->krb5,
+ &respmsg, &len);
+ if(!result && respmsg) {
+ /* Send the message */
+ result = Curl_pp_sendf(&smtpc->pp, "%s", respmsg);
+
+ if(!result)
+ state(conn, SMTP_AUTH_GSSAPI_TOKEN);
+ }
+ }
+
+ Curl_safefree(respmsg);
+
+ return result;
+}
+
+/* For AUTH GSSAPI user token responses */
+static CURLcode smtp_state_auth_gssapi_token_resp(struct connectdata *conn,
+ int smtpcode,
+ smtpstate instate)
+{
+ CURLcode result = CURLE_OK;
+ struct SessionHandle *data = conn->data;
+ struct smtp_conn *smtpc = &conn->proto.smtpc;
+ char *chlgmsg = NULL;
+ char *respmsg = NULL;
+ size_t len = 0;
+
+ (void)instate; /* no use for this yet */
+
+ if(smtpcode != 334) {
+ failf(data, "Access denied: %d", smtpcode);
+ result = CURLE_LOGIN_DENIED;
+ }
+ else {
+ /* Get the challenge message */
+ smtp_get_message(data->state.buffer, &chlgmsg);
+
+ if(smtpc->mutual_auth)
+ /* Decode the user token challenge and create the optional response
+ message */
+ result = Curl_sasl_create_gssapi_user_message(data, NULL, NULL, NULL,
+ smtpc->mutual_auth,
+ chlgmsg, &conn->krb5,
+ &respmsg, &len);
+ else
+ /* Decode the security challenge and create the response message */
+ result = Curl_sasl_create_gssapi_security_message(data, chlgmsg,
+ &conn->krb5,
+ &respmsg, &len);
+
+ if(result) {
+ if(result == CURLE_BAD_CONTENT_ENCODING) {
+ /* Send the cancellation */
+ result = Curl_pp_sendf(&smtpc->pp, "%s", "*");
+
+ if(!result)
+ state(conn, SMTP_AUTH_CANCEL);
+ }
+ }
+ else {
+ /* Send the response */
+ if(respmsg)
+ result = Curl_pp_sendf(&smtpc->pp, "%s", respmsg);
+ else
+ result = Curl_pp_sendf(&smtpc->pp, "%s", "");
+
+ if(!result)
+ state(conn, (smtpc->mutual_auth ? SMTP_AUTH_GSSAPI_NO_DATA :
+ SMTP_AUTH_FINAL));
+ }
+ }
+
+ Curl_safefree(respmsg);
+
+ return result;
+}
+
+/* For AUTH GSSAPI no data responses */
+static CURLcode smtp_state_auth_gssapi_no_data_resp(struct connectdata *conn,
+ int smtpcode,
+ smtpstate instate)
+{
+ CURLcode result = CURLE_OK;
+ struct SessionHandle *data = conn->data;
+ char *chlgmsg = NULL;
+ char *respmsg = NULL;
+ size_t len = 0;
+
+ (void)instate; /* no use for this yet */
+
+ if(smtpcode != 334) {
+ failf(data, "Access denied: %d", smtpcode);
+ result = CURLE_LOGIN_DENIED;
+ }
+ else {
+ /* Get the challenge message */
+ smtp_get_message(data->state.buffer, &chlgmsg);
+
+ /* Decode the security challenge and create the response message */
+ result = Curl_sasl_create_gssapi_security_message(data, chlgmsg,
+ &conn->krb5,
+ &respmsg, &len);
+ if(result) {
+ if(result == CURLE_BAD_CONTENT_ENCODING) {
+ /* Send the cancellation */
+ result = Curl_pp_sendf(&conn->proto.smtpc.pp, "%s", "*");
+
+ if(!result)
+ state(conn, SMTP_AUTH_CANCEL);
+ }
+ }
+ else {
+ /* Send the response */
+ if(respmsg) {
+ result = Curl_pp_sendf(&conn->proto.smtpc.pp, "%s", respmsg);
+
+ if(!result)
+ state(conn, SMTP_AUTH_FINAL);
+ }
+ }
+ }
+
+ Curl_safefree(respmsg);
+
+ return result;
+}
+#endif
+
+/* For AUTH XOAUTH2 (without initial response) responses */
+static CURLcode smtp_state_auth_xoauth2_resp(struct connectdata *conn,
+ int smtpcode, smtpstate instate)
+{
+ CURLcode result = CURLE_OK;
+ struct SessionHandle *data = conn->data;
+ size_t len = 0;
+ char *xoauth = NULL;
+
+ (void)instate; /* no use for this yet */
+
+ if(smtpcode != 334) {
+ failf(data, "Access denied: %d", smtpcode);
+ result = CURLE_LOGIN_DENIED;
+ }
+ else {
+ /* Create the authorisation message */
+ result = Curl_sasl_create_xoauth2_message(conn->data, conn->user,
+ conn->xoauth2_bearer,
+ &xoauth, &len);
+ if(!result && xoauth) {
+ /* Send the message */
+ result = Curl_pp_sendf(&conn->proto.smtpc.pp, "%s", xoauth);
+
+ if(!result)
+ state(conn, SMTP_AUTH_FINAL);
+ }
+ }
+
+ Curl_safefree(xoauth);
+
+ return result;
+}
+
+/* For AUTH cancellation responses */
+static CURLcode smtp_state_auth_cancel_resp(struct connectdata *conn,
+ int smtpcode,
+ smtpstate instate)
+{
+ CURLcode result = CURLE_OK;
+ struct SessionHandle *data = conn->data;
+ struct smtp_conn *smtpc = &conn->proto.smtpc;
+ const char *mech = NULL;
+ char *initresp = NULL;
+ size_t len = 0;
+ smtpstate state1 = SMTP_STOP;
+ smtpstate state2 = SMTP_STOP;
+
+ (void)smtpcode;
+ (void)instate; /* no use for this yet */
+
+ /* Remove the offending mechanism from the supported list */
+ smtpc->authmechs ^= smtpc->authused;
+
+ /* Calculate alternative SASL login details */
+ result = smtp_calc_sasl_details(conn, &mech, &initresp, &len, &state1,
+ &state2);
+
+ if(!result) {
+ /* Do we have any mechanisms left? */
+ if(mech) {
+ /* Retry SASL based authentication */
+ result = smtp_perform_auth(conn, mech, initresp, len, state1, state2);
+
+ Curl_safefree(initresp);
+ }
+ else {
failf(data, "Authentication cancelled");
+
result = CURLE_LOGIN_DENIED;
- break;
- default:
- break;
}
+ }
+
+ return result;
+}
+
+/* For final responses in the AUTH sequence */
+static CURLcode smtp_state_auth_final_resp(struct connectdata *conn,
+ int smtpcode,
+ smtpstate instate)
+{
+ CURLcode result = CURLE_OK;
+ struct SessionHandle *data = conn->data;
+
+ (void)instate; /* no use for this yet */
+
+ if(smtpcode != 235) {
+ failf(data, "Authentication failed: %d", smtpcode);
+ result = CURLE_LOGIN_DENIED;
+ }
+ else
+ /* End of connect phase */
+ state(conn, SMTP_STOP);
return result;
}
result = smtp_state_starttls_resp(conn, smtpcode, smtpc->state);
break;
- case SMTP_AUTH:
- result = smtp_state_auth_resp(conn, smtpcode, smtpc->state);
+ case SMTP_AUTH_PLAIN:
+ result = smtp_state_auth_plain_resp(conn, smtpcode, smtpc->state);
+ break;
+
+ case SMTP_AUTH_LOGIN:
+ result = smtp_state_auth_login_resp(conn, smtpcode, smtpc->state);
+ break;
+
+ case SMTP_AUTH_LOGIN_PASSWD:
+ result = smtp_state_auth_login_password_resp(conn, smtpcode,
+ smtpc->state);
+ break;
+
+#ifndef CURL_DISABLE_CRYPTO_AUTH
+ case SMTP_AUTH_CRAMMD5:
+ result = smtp_state_auth_cram_resp(conn, smtpcode, smtpc->state);
+ break;
+
+ case SMTP_AUTH_DIGESTMD5:
+ result = smtp_state_auth_digest_resp(conn, smtpcode, smtpc->state);
+ break;
+
+ case SMTP_AUTH_DIGESTMD5_RESP:
+ result = smtp_state_auth_digest_resp_resp(conn, smtpcode, smtpc->state);
+ break;
+#endif
+
+#ifdef USE_NTLM
+ case SMTP_AUTH_NTLM:
+ result = smtp_state_auth_ntlm_resp(conn, smtpcode, smtpc->state);
+ break;
+
+ case SMTP_AUTH_NTLM_TYPE2MSG:
+ result = smtp_state_auth_ntlm_type2msg_resp(conn, smtpcode,
+ smtpc->state);
+ break;
+#endif
+
+#if defined(USE_KERBEROS5)
+ case SMTP_AUTH_GSSAPI:
+ result = smtp_state_auth_gssapi_resp(conn, smtpcode, smtpc->state);
+ break;
+
+ case SMTP_AUTH_GSSAPI_TOKEN:
+ result = smtp_state_auth_gssapi_token_resp(conn, smtpcode, smtpc->state);
+ break;
+
+ case SMTP_AUTH_GSSAPI_NO_DATA:
+ result = smtp_state_auth_gssapi_no_data_resp(conn, smtpcode,
+ smtpc->state);
+ break;
+#endif
+
+ case SMTP_AUTH_XOAUTH2:
+ result = smtp_state_auth_xoauth2_resp(conn, smtpcode, smtpc->state);
+ break;
+
+ case SMTP_AUTH_CANCEL:
+ result = smtp_state_auth_cancel_resp(conn, smtpcode, smtpc->state);
+ break;
+
+ case SMTP_AUTH_FINAL:
+ result = smtp_state_auth_final_resp(conn, smtpcode, smtpc->state);
break;
case SMTP_COMMAND:
pp->endofresp = smtp_endofresp;
pp->conn = conn;
- /* Initialize the SASL storage */
- Curl_sasl_init(&smtpc->sasl, &saslsmtp);
+ /* Set the default preferred authentication mechanism */
+ smtpc->prefmech = SASL_AUTH_ANY;
/* Initialise the pingpong layer */
Curl_pp_init(pp);
Curl_pp_disconnect(&smtpc->pp);
/* Cleanup the SASL module */
- Curl_sasl_cleanup(conn, smtpc->sasl.authused);
+ Curl_sasl_cleanup(conn, smtpc->authused);
/* Cleanup our connection based variables */
Curl_safefree(smtpc->domain);
{
CURLcode result = CURLE_OK;
struct smtp_conn *smtpc = &conn->proto.smtpc;
- const char *ptr = conn->options;
-
- smtpc->sasl.resetprefs = TRUE;
+ const char *options = conn->options;
+ const char *ptr = options;
+ bool reset = TRUE;
- while(!result && ptr && *ptr) {
+ while(ptr && *ptr) {
const char *key = ptr;
- const char *value;
while(*ptr && *ptr != '=')
ptr++;
- value = ptr + 1;
+ if(strnequal(key, "AUTH", 4)) {
+ size_t len = 0;
+ const char *value = ++ptr;
- while(*ptr && *ptr != ';')
- ptr++;
+ if(reset) {
+ reset = FALSE;
+ smtpc->prefmech = SASL_AUTH_NONE;
+ }
+
+ while(*ptr && *ptr != ';') {
+ ptr++;
+ len++;
+ }
- if(strnequal(key, "AUTH=", 5))
- result = Curl_sasl_parse_url_auth_option(&smtpc->sasl,
- value, ptr - value);
+ if(strnequal(value, "*", len))
+ smtpc->prefmech = SASL_AUTH_ANY;
+ else if(strnequal(value, SASL_MECH_STRING_LOGIN, len))
+ smtpc->prefmech |= SASL_MECH_LOGIN;
+ else if(strnequal(value, SASL_MECH_STRING_PLAIN, len))
+ smtpc->prefmech |= SASL_MECH_PLAIN;
+ else if(strnequal(value, SASL_MECH_STRING_CRAM_MD5, len))
+ smtpc->prefmech |= SASL_MECH_CRAM_MD5;
+ else if(strnequal(value, SASL_MECH_STRING_DIGEST_MD5, len))
+ smtpc->prefmech |= SASL_MECH_DIGEST_MD5;
+ else if(strnequal(value, SASL_MECH_STRING_GSSAPI, len))
+ smtpc->prefmech |= SASL_MECH_GSSAPI;
+ else if(strnequal(value, SASL_MECH_STRING_NTLM, len))
+ smtpc->prefmech |= SASL_MECH_NTLM;
+ else if(strnequal(value, SASL_MECH_STRING_XOAUTH2, len))
+ smtpc->prefmech |= SASL_MECH_XOAUTH2;
+
+ if(*ptr == ';')
+ ptr++;
+ }
else
result = CURLE_URL_MALFORMAT;
-
- if(*ptr == ';')
- ptr++;
}
return result;
return result;
}
+/***********************************************************************
+ *
+ * smtp_calc_sasl_details()
+ *
+ * Calculate the required login details for SASL authentication.
+ */
+static CURLcode smtp_calc_sasl_details(struct connectdata *conn,
+ const char **mech,
+ char **initresp, size_t *len,
+ smtpstate *state1, smtpstate *state2)
+{
+ CURLcode result = CURLE_OK;
+ struct SessionHandle *data = conn->data;
+ struct smtp_conn *smtpc = &conn->proto.smtpc;
+
+ /* Calculate the supported authentication mechanism, by decreasing order of
+ security, as well as the initial response where appropriate */
+#if defined(USE_KERBEROS5)
+ if((smtpc->authmechs & SASL_MECH_GSSAPI) &&
+ (smtpc->prefmech & SASL_MECH_GSSAPI)) {
+ smtpc->mutual_auth = FALSE; /* TODO: Calculate mutual authentication */
+
+ *mech = SASL_MECH_STRING_GSSAPI;
+ *state1 = SMTP_AUTH_GSSAPI;
+ *state2 = SMTP_AUTH_GSSAPI_TOKEN;
+ smtpc->authused = SASL_MECH_GSSAPI;
+
+ if(data->set.sasl_ir)
+ result = Curl_sasl_create_gssapi_user_message(data, conn->user,
+ conn->passwd, "smtp",
+ smtpc->mutual_auth,
+ NULL, &conn->krb5,
+ initresp, len);
+ }
+ else
+#endif
+#ifndef CURL_DISABLE_CRYPTO_AUTH
+ if((smtpc->authmechs & SASL_MECH_DIGEST_MD5) &&
+ (smtpc->prefmech & SASL_MECH_DIGEST_MD5)) {
+ *mech = SASL_MECH_STRING_DIGEST_MD5;
+ *state1 = SMTP_AUTH_DIGESTMD5;
+ smtpc->authused = SASL_MECH_DIGEST_MD5;
+ }
+ else if((smtpc->authmechs & SASL_MECH_CRAM_MD5) &&
+ (smtpc->prefmech & SASL_MECH_CRAM_MD5)) {
+ *mech = SASL_MECH_STRING_CRAM_MD5;
+ *state1 = SMTP_AUTH_CRAMMD5;
+ smtpc->authused = SASL_MECH_CRAM_MD5;
+ }
+ else
+#endif
+#ifdef USE_NTLM
+ if((smtpc->authmechs & SASL_MECH_NTLM) &&
+ (smtpc->prefmech & SASL_MECH_NTLM)) {
+ *mech = SASL_MECH_STRING_NTLM;
+ *state1 = SMTP_AUTH_NTLM;
+ *state2 = SMTP_AUTH_NTLM_TYPE2MSG;
+ smtpc->authused = SASL_MECH_NTLM;
+
+ if(data->set.sasl_ir)
+ result = Curl_sasl_create_ntlm_type1_message(conn->user, conn->passwd,
+ &conn->ntlm,
+ initresp, len);
+ }
+ else
+#endif
+ if(((smtpc->authmechs & SASL_MECH_XOAUTH2) &&
+ (smtpc->prefmech & SASL_MECH_XOAUTH2) &&
+ (smtpc->prefmech != SASL_AUTH_ANY)) || conn->xoauth2_bearer) {
+ *mech = SASL_MECH_STRING_XOAUTH2;
+ *state1 = SMTP_AUTH_XOAUTH2;
+ *state2 = SMTP_AUTH_FINAL;
+ smtpc->authused = SASL_MECH_XOAUTH2;
+
+ if(data->set.sasl_ir)
+ result = Curl_sasl_create_xoauth2_message(data, conn->user,
+ conn->xoauth2_bearer,
+ initresp, len);
+ }
+ else if((smtpc->authmechs & SASL_MECH_LOGIN) &&
+ (smtpc->prefmech & SASL_MECH_LOGIN)) {
+ *mech = SASL_MECH_STRING_LOGIN;
+ *state1 = SMTP_AUTH_LOGIN;
+ *state2 = SMTP_AUTH_LOGIN_PASSWD;
+ smtpc->authused = SASL_MECH_LOGIN;
+
+ if(data->set.sasl_ir)
+ result = Curl_sasl_create_login_message(data, conn->user, initresp, len);
+ }
+ else if((smtpc->authmechs & SASL_MECH_PLAIN) &&
+ (smtpc->prefmech & SASL_MECH_PLAIN)) {
+ *mech = SASL_MECH_STRING_PLAIN;
+ *state1 = SMTP_AUTH_PLAIN;
+ *state2 = SMTP_AUTH_FINAL;
+ smtpc->authused = SASL_MECH_PLAIN;
+
+ if(data->set.sasl_ir)
+ result = Curl_sasl_create_plain_message(data, conn->user, conn->passwd,
+ initresp, len);
+ }
+
+ return result;
+}
+
CURLcode Curl_smtp_escape_eob(struct connectdata *conn, const ssize_t nread)
{
/* When sending a SMTP payload we must detect CRLF. sequences making sure
data->state.scratch = scratch;
/* Free the old scratch buffer */
- free(oldscratch);
+ Curl_safefree(oldscratch);
/* Set the new amount too */
data->req.upload_present = si;
}
else
- free(newscratch);
+ Curl_safefree(newscratch);
return CURLE_OK;
}
projects / platform / upstream / curl.git / blobdiff