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-rwxr-xr-xexternal/libcurl_android/jni/libcurl/lib/smtp.c2378
1 files changed, 0 insertions, 2378 deletions
diff --git a/external/libcurl_android/jni/libcurl/lib/smtp.c b/external/libcurl_android/jni/libcurl/lib/smtp.c
deleted file mode 100755
index 9aa8b15b..00000000
--- a/external/libcurl_android/jni/libcurl/lib/smtp.c
+++ /dev/null
@@ -1,2378 +0,0 @@
-/***************************************************************************
- * _ _ ____ _
- * Project ___| | | | _ \| |
- * / __| | | | |_) | |
- * | (__| |_| | _ <| |___
- * \___|\___/|_| \_\_____|
- *
- * 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
- * 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.
- *
- * RFC1870 SMTP Service Extension for Message Size
- * RFC2195 CRAM-MD5 authentication
- * RFC2831 DIGEST-MD5 authentication
- * RFC3207 SMTP over TLS
- * RFC4422 Simple Authentication and Security Layer (SASL)
- * RFC4616 PLAIN authentication
- * RFC4752 The Kerberos V5 ("GSSAPI") SASL Mechanism
- * RFC4954 SMTP Authentication
- * RFC5321 SMTP protocol
- * RFC6749 OAuth 2.0 Authorization Framework
- * Draft SMTP URL Interface <draft-earhart-url-smtp-00.txt>
- * Draft LOGIN SASL Mechanism <draft-murchison-sasl-login-00.txt>
- *
- ***************************************************************************/
-
-#include "curl_setup.h"
-
-#ifndef CURL_DISABLE_SMTP
-
-#ifdef HAVE_NETINET_IN_H
-#include <netinet/in.h>
-#endif
-#ifdef HAVE_ARPA_INET_H
-#include <arpa/inet.h>
-#endif
-#ifdef HAVE_UTSNAME_H
-#include <sys/utsname.h>
-#endif
-#ifdef HAVE_NETDB_H
-#include <netdb.h>
-#endif
-#ifdef __VMS
-#include <in.h>
-#include <inet.h>
-#endif
-
-#if (defined(NETWARE) && defined(__NOVELL_LIBC__))
-#undef in_addr_t
-#define in_addr_t unsigned long
-#endif
-
-#include <curl/curl.h>
-#include "urldata.h"
-#include "sendf.h"
-#include "if2ip.h"
-#include "hostip.h"
-#include "progress.h"
-#include "transfer.h"
-#include "escape.h"
-#include "http.h" /* for HTTP proxy tunnel stuff */
-#include "socks.h"
-#include "smtp.h"
-
-#include "strtoofft.h"
-#include "strequal.h"
-#include "vtls/vtls.h"
-#include "connect.h"
-#include "strerror.h"
-#include "select.h"
-#include "multiif.h"
-#include "url.h"
-#include "rawstr.h"
-#include "curl_gethostname.h"
-#include "curl_sasl.h"
-#include "warnless.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"
-
-/* Local API functions */
-static CURLcode smtp_regular_transfer(struct connectdata *conn, bool *done);
-static CURLcode smtp_do(struct connectdata *conn, bool *done);
-static CURLcode smtp_done(struct connectdata *conn, CURLcode status,
- bool premature);
-static CURLcode smtp_connect(struct connectdata *conn, bool *done);
-static CURLcode smtp_disconnect(struct connectdata *conn, bool dead);
-static CURLcode smtp_multi_statemach(struct connectdata *conn, bool *done);
-static int smtp_getsock(struct connectdata *conn, curl_socket_t *socks,
- int numsocks);
-static CURLcode smtp_doing(struct connectdata *conn, bool *dophase_done);
-static CURLcode smtp_setup_connection(struct connectdata *conn);
-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_calc_sasl_details(struct connectdata *conn,
- const char **mech,
- char **initresp, size_t *len,
- smtpstate *state1, smtpstate *state2);
-
-/*
- * SMTP protocol handler.
- */
-
-const struct Curl_handler Curl_handler_smtp = {
- "SMTP", /* scheme */
- smtp_setup_connection, /* setup_connection */
- smtp_do, /* do_it */
- smtp_done, /* done */
- ZERO_NULL, /* do_more */
- smtp_connect, /* connect_it */
- smtp_multi_statemach, /* connecting */
- smtp_doing, /* doing */
- smtp_getsock, /* proto_getsock */
- smtp_getsock, /* doing_getsock */
- ZERO_NULL, /* domore_getsock */
- ZERO_NULL, /* perform_getsock */
- smtp_disconnect, /* disconnect */
- ZERO_NULL, /* readwrite */
- PORT_SMTP, /* defport */
- CURLPROTO_SMTP, /* protocol */
- PROTOPT_CLOSEACTION | PROTOPT_NOURLQUERY /* flags */
-};
-
-#ifdef USE_SSL
-/*
- * SMTPS protocol handler.
- */
-
-const struct Curl_handler Curl_handler_smtps = {
- "SMTPS", /* scheme */
- smtp_setup_connection, /* setup_connection */
- smtp_do, /* do_it */
- smtp_done, /* done */
- ZERO_NULL, /* do_more */
- smtp_connect, /* connect_it */
- smtp_multi_statemach, /* connecting */
- smtp_doing, /* doing */
- smtp_getsock, /* proto_getsock */
- smtp_getsock, /* doing_getsock */
- ZERO_NULL, /* domore_getsock */
- ZERO_NULL, /* perform_getsock */
- smtp_disconnect, /* disconnect */
- ZERO_NULL, /* readwrite */
- PORT_SMTPS, /* defport */
- CURLPROTO_SMTPS, /* protocol */
- PROTOPT_CLOSEACTION | PROTOPT_SSL
- | PROTOPT_NOURLQUERY /* flags */
-};
-#endif
-
-#ifndef CURL_DISABLE_HTTP
-/*
- * HTTP-proxyed SMTP protocol handler.
- */
-
-static const struct Curl_handler Curl_handler_smtp_proxy = {
- "SMTP", /* scheme */
- Curl_http_setup_conn, /* setup_connection */
- Curl_http, /* do_it */
- Curl_http_done, /* done */
- ZERO_NULL, /* do_more */
- ZERO_NULL, /* connect_it */
- ZERO_NULL, /* connecting */
- ZERO_NULL, /* doing */
- ZERO_NULL, /* proto_getsock */
- ZERO_NULL, /* doing_getsock */
- ZERO_NULL, /* domore_getsock */
- ZERO_NULL, /* perform_getsock */
- ZERO_NULL, /* disconnect */
- ZERO_NULL, /* readwrite */
- PORT_SMTP, /* defport */
- CURLPROTO_HTTP, /* protocol */
- PROTOPT_NONE /* flags */
-};
-
-#ifdef USE_SSL
-/*
- * HTTP-proxyed SMTPS protocol handler.
- */
-
-static const struct Curl_handler Curl_handler_smtps_proxy = {
- "SMTPS", /* scheme */
- Curl_http_setup_conn, /* setup_connection */
- Curl_http, /* do_it */
- Curl_http_done, /* done */
- ZERO_NULL, /* do_more */
- ZERO_NULL, /* connect_it */
- ZERO_NULL, /* connecting */
- ZERO_NULL, /* doing */
- ZERO_NULL, /* proto_getsock */
- ZERO_NULL, /* doing_getsock */
- ZERO_NULL, /* domore_getsock */
- ZERO_NULL, /* perform_getsock */
- ZERO_NULL, /* disconnect */
- ZERO_NULL, /* readwrite */
- PORT_SMTPS, /* defport */
- CURLPROTO_HTTP, /* protocol */
- PROTOPT_NONE /* flags */
-};
-#endif
-#endif
-
-#ifdef USE_SSL
-static void smtp_to_smtps(struct connectdata *conn)
-{
- conn->handler = &Curl_handler_smtps;
-}
-#else
-#define smtp_to_smtps(x) Curl_nop_stmt
-#endif
-
-/***********************************************************************
- *
- * smtp_endofresp()
- *
- * Checks for an ending SMTP status code at the start of the given string, but
- * also detects various capabilities from the EHLO response including the
- * supported authentication mechanisms.
- */
-static bool smtp_endofresp(struct connectdata *conn, char *line, size_t len,
- int *resp)
-{
- struct smtp_conn *smtpc = &conn->proto.smtpc;
- bool result = FALSE;
-
- /* Nothing for us */
- if(len < 4 || !ISDIGIT(line[0]) || !ISDIGIT(line[1]) || !ISDIGIT(line[2]))
- return FALSE;
-
- /* Do we have a command response? This should be the response code followed
- by a space and optionally some text as per RFC-5321 and as outlined in
- Section 4. Examples of RFC-4954 but some e-mail servers ignore this and
- only send the response code instead as per Section 4.2. */
- if(line[3] == ' ' || len == 5) {
- result = TRUE;
- *resp = curlx_sltosi(strtol(line, NULL, 10));
-
- /* Make sure real server never sends internal value */
- if(*resp == 1)
- *resp = 0;
- }
- /* Do we have a multiline (continuation) response? */
- else if(line[3] == '-' &&
- (smtpc->state == SMTP_EHLO || smtpc->state == SMTP_COMMAND)) {
- result = TRUE;
- *resp = 1; /* Internal response code */
- }
-
- return result;
-}
-
-/***********************************************************************
- *
- * smtp_get_message()
- *
- * Gets the authentication message from the response buffer.
- */
-static void smtp_get_message(char *buffer, char** outptr)
-{
- size_t len = 0;
- char* message = NULL;
-
- /* Find the start of the message */
- for(message = buffer + 4; *message == ' ' || *message == '\t'; message++)
- ;
-
- /* Find the end of the message */
- for(len = strlen(message); len--;)
- if(message[len] != '\r' && message[len] != '\n' && message[len] != ' ' &&
- message[len] != '\t')
- break;
-
- /* Terminate the message */
- if(++len) {
- message[len] = '\0';
- }
-
- *outptr = message;
-}
-
-/***********************************************************************
- *
- * state()
- *
- * This is the ONLY way to change SMTP state!
- */
-static void state(struct connectdata *conn, smtpstate newstate)
-{
- struct smtp_conn *smtpc = &conn->proto.smtpc;
-#if defined(DEBUGBUILD) && !defined(CURL_DISABLE_VERBOSE_STRINGS)
- /* for debug purposes */
- static const char * const names[] = {
- "STOP",
- "SERVERGREET",
- "EHLO",
- "HELO",
- "STARTTLS",
- "UPGRADETLS",
- "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",
- "DATA",
- "POSTDATA",
- "QUIT",
- /* LAST */
- };
-
- if(smtpc->state != newstate)
- infof(conn->data, "SMTP %p state change from %s to %s\n",
- (void *)smtpc, names[smtpc->state], names[newstate]);
-#endif
-
- smtpc->state = newstate;
-}
-
-/***********************************************************************
- *
- * smtp_perform_ehlo()
- *
- * Sends the EHLO command to not only initialise communication with the ESMTP
- * server but to also obtain a list of server side supported capabilities.
- */
-static CURLcode smtp_perform_ehlo(struct connectdata *conn)
-{
- CURLcode result = CURLE_OK;
- struct smtp_conn *smtpc = &conn->proto.smtpc;
-
- 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);
-
- if(!result)
- state(conn, SMTP_EHLO);
-
- return result;
-}
-
-/***********************************************************************
- *
- * smtp_perform_helo()
- *
- * Sends the HELO command to initialise communication with the SMTP server.
- */
-static CURLcode smtp_perform_helo(struct connectdata *conn)
-{
- CURLcode result = CURLE_OK;
- struct smtp_conn *smtpc = &conn->proto.smtpc;
-
- smtpc->authused = 0; /* No authentication mechanism used in smtp
- connections */
-
- /* Send the HELO command */
- result = Curl_pp_sendf(&smtpc->pp, "HELO %s", smtpc->domain);
-
- if(!result)
- state(conn, SMTP_HELO);
-
- return result;
-}
-
-/***********************************************************************
- *
- * smtp_perform_starttls()
- *
- * Sends the STLS command to start the upgrade to TLS.
- */
-static CURLcode smtp_perform_starttls(struct connectdata *conn)
-{
- CURLcode result = CURLE_OK;
-
- /* Send the STARTTLS command */
- result = Curl_pp_sendf(&conn->proto.smtpc.pp, "%s", "STARTTLS");
-
- if(!result)
- state(conn, SMTP_STARTTLS);
-
- return result;
-}
-
-/***********************************************************************
- *
- * smtp_perform_upgrade_tls()
- *
- * Performs the upgrade to TLS.
- */
-static CURLcode smtp_perform_upgrade_tls(struct connectdata *conn)
-{
- CURLcode result = CURLE_OK;
- struct smtp_conn *smtpc = &conn->proto.smtpc;
-
- /* Start the SSL connection */
- result = Curl_ssl_connect_nonblocking(conn, FIRSTSOCKET, &smtpc->ssldone);
-
- if(!result) {
- if(smtpc->state != SMTP_UPGRADETLS)
- state(conn, SMTP_UPGRADETLS);
-
- if(smtpc->ssldone) {
- smtp_to_smtps(conn);
- result = smtp_perform_ehlo(conn);
- }
- }
-
- return result;
-}
-
-/***********************************************************************
- *
- * smtp_perform_auth()
- *
- * Sends an AUTH command allowing the client to login with the given SASL
- * authentication mechanism.
- */
-static CURLcode smtp_perform_auth(struct connectdata *conn,
- const char *mech,
- const char *initresp, size_t len,
- smtpstate state1, smtpstate state2)
-{
- CURLcode result = CURLE_OK;
- struct smtp_conn *smtpc = &conn->proto.smtpc;
-
- 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_perform_authentication()
- *
- * Initiates the authentication sequence, with the appropriate SASL
- * authentication mechanism.
- */
-static CURLcode smtp_perform_authentication(struct connectdata *conn)
-{
- CURLcode result = CURLE_OK;
- 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;
-
- /* Check we have a username and password to authenticate with, and the
- server supports authentiation, and end the connect phase if not */
- if(!conn->bits.user_passwd || !smtpc->auth_supported) {
- state(conn, SMTP_STOP);
-
- return result;
- }
-
- /* Calculate the SASL login details */
- result = smtp_calc_sasl_details(conn, &mech, &initresp, &len, &state1,
- &state2);
-
- if(!result) {
- 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");
- result = CURLE_LOGIN_DENIED;
- }
- }
-
- return result;
-}
-
-/***********************************************************************
- *
- * smtp_perform_command()
- *
- * Sends a SMTP based command.
- */
-static CURLcode smtp_perform_command(struct connectdata *conn)
-{
- CURLcode result = CURLE_OK;
- struct SessionHandle *data = conn->data;
- struct SMTP *smtp = data->req.protop;
-
- /* Send the command */
- if(smtp->rcpt)
- result = Curl_pp_sendf(&conn->proto.smtpc.pp, "%s %s",
- smtp->custom && smtp->custom[0] != '\0' ?
- smtp->custom : "VRFY",
- smtp->rcpt->data);
- else
- result = Curl_pp_sendf(&conn->proto.smtpc.pp, "%s",
- smtp->custom && smtp->custom[0] != '\0' ?
- smtp->custom : "HELP");
-
- if(!result)
- state(conn, SMTP_COMMAND);
-
- return result;
-}
-
-/***********************************************************************
- *
- * smtp_perform_mail()
- *
- * Sends an MAIL command to initiate the upload of a message.
- */
-static CURLcode smtp_perform_mail(struct connectdata *conn)
-{
- char *from = NULL;
- char *auth = NULL;
- char *size = NULL;
- CURLcode result = CURLE_OK;
- struct SessionHandle *data = conn->data;
-
- /* Calculate the FROM parameter */
- if(!data->set.str[STRING_MAIL_FROM])
- /* Null reverse-path, RFC-5321, sect. 3.6.3 */
- from = strdup("<>");
- else if(data->set.str[STRING_MAIL_FROM][0] == '<')
- from = aprintf("%s", data->set.str[STRING_MAIL_FROM]);
- else
- from = aprintf("<%s>", data->set.str[STRING_MAIL_FROM]);
-
- if(!from)
- return CURLE_OUT_OF_MEMORY;
-
- /* Calculate the optional AUTH parameter */
- 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
- /* Empty AUTH, RFC-2554, sect. 5 */
- auth = strdup("<>");
-
- if(!auth) {
- Curl_safefree(from);
-
- return CURLE_OUT_OF_MEMORY;
- }
- }
-
- /* Calculate the optional SIZE parameter */
- if(conn->proto.smtpc.size_supported && conn->data->state.infilesize > 0) {
- size = aprintf("%" CURL_FORMAT_CURL_OFF_T, data->state.infilesize);
-
- if(!size) {
- Curl_safefree(from);
- Curl_safefree(auth);
-
- return CURLE_OUT_OF_MEMORY;
- }
- }
-
- /* Send the MAIL command */
- if(!auth && !size)
- result = Curl_pp_sendf(&conn->proto.smtpc.pp,
- "MAIL FROM:%s", from);
- else if(auth && !size)
- result = Curl_pp_sendf(&conn->proto.smtpc.pp,
- "MAIL FROM:%s AUTH=%s", from, auth);
- else if(auth && size)
- result = Curl_pp_sendf(&conn->proto.smtpc.pp,
- "MAIL FROM:%s AUTH=%s SIZE=%s", from, auth, size);
- else
- result = Curl_pp_sendf(&conn->proto.smtpc.pp,
- "MAIL FROM:%s SIZE=%s", from, size);
-
- Curl_safefree(from);
- Curl_safefree(auth);
- Curl_safefree(size);
-
- if(!result)
- state(conn, SMTP_MAIL);
-
- return result;
-}
-
-/***********************************************************************
- *
- * smtp_perform_rcpt_to()
- *
- * Sends a RCPT TO command for a given recipient as part of the message upload
- * process.
- */
-static CURLcode smtp_perform_rcpt_to(struct connectdata *conn)
-{
- CURLcode result = CURLE_OK;
- struct SessionHandle *data = conn->data;
- struct SMTP *smtp = data->req.protop;
-
- /* Send the RCPT TO command */
- if(smtp->rcpt->data[0] == '<')
- result = Curl_pp_sendf(&conn->proto.smtpc.pp, "RCPT TO:%s",
- smtp->rcpt->data);
- else
- result = Curl_pp_sendf(&conn->proto.smtpc.pp, "RCPT TO:<%s>",
- smtp->rcpt->data);
- if(!result)
- state(conn, SMTP_RCPT);
-
- return result;
-}
-
-/***********************************************************************
- *
- * smtp_perform_quit()
- *
- * Performs the quit action prior to sclose() being called.
- */
-static CURLcode smtp_perform_quit(struct connectdata *conn)
-{
- CURLcode result = CURLE_OK;
-
- /* Send the QUIT command */
- result = Curl_pp_sendf(&conn->proto.smtpc.pp, "%s", "QUIT");
-
- if(!result)
- state(conn, SMTP_QUIT);
-
- return result;
-}
-
-/* For the initial server greeting */
-static CURLcode smtp_state_servergreet_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/100 != 2) {
- failf(data, "Got unexpected smtp-server response: %d", smtpcode);
- result = CURLE_FTP_WEIRD_SERVER_REPLY;
- }
- else
- result = smtp_perform_ehlo(conn);
-
- return result;
-}
-
-/* For STARTTLS responses */
-static CURLcode smtp_state_starttls_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 != 220) {
- if(data->set.use_ssl != CURLUSESSL_TRY) {
- failf(data, "STARTTLS denied. %c", smtpcode);
- result = CURLE_USE_SSL_FAILED;
- }
- else
- result = smtp_perform_authentication(conn);
- }
- else
- result = smtp_perform_upgrade_tls(conn);
-
- return result;
-}
-
-/* For EHLO responses */
-static CURLcode smtp_state_ehlo_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 *line = data->state.buffer;
- size_t len = strlen(line);
- size_t wordlen;
-
- (void)instate; /* no use for this yet */
-
- if(smtpcode/100 != 2 && smtpcode != 1) {
- if(data->set.use_ssl <= CURLUSESSL_TRY || conn->ssl[FIRSTSOCKET].use)
- result = smtp_perform_helo(conn);
- else {
- failf(data, "Remote access denied: %d", smtpcode);
- result = CURLE_REMOTE_ACCESS_DENIED;
- }
- }
- else {
- line += 4;
- len -= 4;
-
- /* Does the server support the STARTTLS capability? */
- if(len >= 8 && !memcmp(line, "STARTTLS", 8))
- smtpc->tls_supported = TRUE;
-
- /* Does the server support the SIZE capability? */
- else if(len >= 4 && !memcmp(line, "SIZE", 4))
- smtpc->size_supported = TRUE;
-
- /* Does the server support authentication? */
- else if(len >= 5 && !memcmp(line, "AUTH ", 5)) {
- smtpc->auth_supported = TRUE;
-
- /* Advance past the AUTH keyword */
- line += 5;
- len -= 5;
-
- /* Loop through the data line */
- for(;;) {
- while(len &&
- (*line == ' ' || *line == '\t' ||
- *line == '\r' || *line == '\n')) {
-
- line++;
- len--;
- }
-
- if(!len)
- break;
-
- /* Extract the word */
- for(wordlen = 0; wordlen < len && line[wordlen] != ' ' &&
- line[wordlen] != '\t' && line[wordlen] != '\r' &&
- line[wordlen] != '\n';)
- wordlen++;
-
- /* Test the word for a matching authentication mechanism */
- 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;
- }
- }
-
- if(smtpcode != 1) {
- if(data->set.use_ssl && !conn->ssl[FIRSTSOCKET].use) {
- /* We don't have a SSL/TLS connection yet, but SSL is requested */
- if(smtpc->tls_supported)
- /* Switch to TLS connection now */
- result = smtp_perform_starttls(conn);
- else if(data->set.use_ssl == CURLUSESSL_TRY)
- /* Fallback and carry on with authentication */
- result = smtp_perform_authentication(conn);
- else {
- failf(data, "STARTTLS not supported.");
- result = CURLE_USE_SSL_FAILED;
- }
- }
- else
- result = smtp_perform_authentication(conn);
- }
- }
-
- return result;
-}
-
-/* For HELO responses */
-static CURLcode smtp_state_helo_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/100 != 2) {
- failf(data, "Remote access denied: %d", smtpcode);
- result = CURLE_REMOTE_ACCESS_DENIED;
- }
- else
- /* End of connect phase */
- state(conn, SMTP_STOP);
-
- return result;
-}
-
-/* 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_WINDOWS_SSPI)
-/* 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;
- 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 {
- /* 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;
- }
- }
-
- 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;
-}
-
-/* For command responses */
-static CURLcode smtp_state_command_resp(struct connectdata *conn, int smtpcode,
- smtpstate instate)
-{
- CURLcode result = CURLE_OK;
- struct SessionHandle *data = conn->data;
- struct SMTP *smtp = data->req.protop;
- char *line = data->state.buffer;
- size_t len = strlen(line);
-
- (void)instate; /* no use for this yet */
-
- if((smtp->rcpt && smtpcode/100 != 2 && smtpcode != 553 && smtpcode != 1) ||
- (!smtp->rcpt && smtpcode/100 != 2 && smtpcode != 1)) {
- failf(data, "Command failed: %d", smtpcode);
- result = CURLE_RECV_ERROR;
- }
- else {
- /* Temporarily add the LF character back and send as body to the client */
- if(!data->set.opt_no_body) {
- line[len] = '\n';
- result = Curl_client_write(conn, CLIENTWRITE_BODY, line, len + 1);
- line[len] = '\0';
- }
-
- if(smtpcode != 1) {
- if(smtp->rcpt) {
- smtp->rcpt = smtp->rcpt->next;
-
- if(smtp->rcpt) {
- /* Send the next command */
- result = smtp_perform_command(conn);
- }
- else
- /* End of DO phase */
- state(conn, SMTP_STOP);
- }
- else
- /* End of DO phase */
- state(conn, SMTP_STOP);
- }
- }
-
- return result;
-}
-
-/* For MAIL responses */
-static CURLcode smtp_state_mail_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/100 != 2) {
- failf(data, "MAIL failed: %d", smtpcode);
- result = CURLE_SEND_ERROR;
- }
- else
- /* Start the RCPT TO command */
- result = smtp_perform_rcpt_to(conn);
-
- return result;
-}
-
-/* For RCPT responses */
-static CURLcode smtp_state_rcpt_resp(struct connectdata *conn, int smtpcode,
- smtpstate instate)
-{
- CURLcode result = CURLE_OK;
- struct SessionHandle *data = conn->data;
- struct SMTP *smtp = data->req.protop;
-
- (void)instate; /* no use for this yet */
-
- if(smtpcode/100 != 2) {
- failf(data, "RCPT failed: %d", smtpcode);
- result = CURLE_SEND_ERROR;
- }
- else {
- smtp->rcpt = smtp->rcpt->next;
-
- if(smtp->rcpt)
- /* Send the next RCPT TO command */
- result = smtp_perform_rcpt_to(conn);
- else {
- /* Send the DATA command */
- result = Curl_pp_sendf(&conn->proto.smtpc.pp, "%s", "DATA");
-
- if(!result)
- state(conn, SMTP_DATA);
- }
- }
-
- return result;
-}
-
-/* For DATA response */
-static CURLcode smtp_state_data_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 != 354) {
- failf(data, "DATA failed: %d", smtpcode);
- result = CURLE_SEND_ERROR;
- }
- else {
- /* Set the progress upload size */
- Curl_pgrsSetUploadSize(data, data->state.infilesize);
-
- /* SMTP upload */
- Curl_setup_transfer(conn, -1, -1, FALSE, NULL, FIRSTSOCKET, NULL);
-
- /* End of DO phase */
- state(conn, SMTP_STOP);
- }
-
- return result;
-}
-
-/* For POSTDATA responses, which are received after the entire DATA
- part has been sent to the server */
-static CURLcode smtp_state_postdata_resp(struct connectdata *conn,
- int smtpcode,
- smtpstate instate)
-{
- CURLcode result = CURLE_OK;
-
- (void)instate; /* no use for this yet */
-
- if(smtpcode != 250)
- result = CURLE_RECV_ERROR;
-
- /* End of DONE phase */
- state(conn, SMTP_STOP);
-
- return result;
-}
-
-static CURLcode smtp_statemach_act(struct connectdata *conn)
-{
- CURLcode result = CURLE_OK;
- curl_socket_t sock = conn->sock[FIRSTSOCKET];
- struct SessionHandle *data = conn->data;
- int smtpcode;
- struct smtp_conn *smtpc = &conn->proto.smtpc;
- struct pingpong *pp = &smtpc->pp;
- size_t nread = 0;
-
- /* Busy upgrading the connection; right now all I/O is SSL/TLS, not SMTP */
- if(smtpc->state == SMTP_UPGRADETLS)
- return smtp_perform_upgrade_tls(conn);
-
- /* Flush any data that needs to be sent */
- if(pp->sendleft)
- return Curl_pp_flushsend(pp);
-
- do {
- /* Read the response from the server */
- result = Curl_pp_readresp(sock, pp, &smtpcode, &nread);
- if(result)
- return result;
-
- /* Store the latest response for later retrieval if necessary */
- if(smtpc->state != SMTP_QUIT && smtpcode != 1)
- data->info.httpcode = smtpcode;
-
- if(!smtpcode)
- break;
-
- /* We have now received a full SMTP server response */
- switch(smtpc->state) {
- case SMTP_SERVERGREET:
- result = smtp_state_servergreet_resp(conn, smtpcode, smtpc->state);
- break;
-
- case SMTP_EHLO:
- result = smtp_state_ehlo_resp(conn, smtpcode, smtpc->state);
- break;
-
- case SMTP_HELO:
- result = smtp_state_helo_resp(conn, smtpcode, smtpc->state);
- break;
-
- case SMTP_STARTTLS:
- result = smtp_state_starttls_resp(conn, smtpcode, smtpc->state);
- break;
-
- 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_WINDOWS_SSPI)
- 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:
- result = smtp_state_command_resp(conn, smtpcode, smtpc->state);
- break;
-
- case SMTP_MAIL:
- result = smtp_state_mail_resp(conn, smtpcode, smtpc->state);
- break;
-
- case SMTP_RCPT:
- result = smtp_state_rcpt_resp(conn, smtpcode, smtpc->state);
- break;
-
- case SMTP_DATA:
- result = smtp_state_data_resp(conn, smtpcode, smtpc->state);
- break;
-
- case SMTP_POSTDATA:
- result = smtp_state_postdata_resp(conn, smtpcode, smtpc->state);
- break;
-
- case SMTP_QUIT:
- /* fallthrough, just stop! */
- default:
- /* internal error */
- state(conn, SMTP_STOP);
- break;
- }
- } while(!result && smtpc->state != SMTP_STOP && Curl_pp_moredata(pp));
-
- return result;
-}
-
-/* Called repeatedly until done from multi.c */
-static CURLcode smtp_multi_statemach(struct connectdata *conn, bool *done)
-{
- CURLcode result = CURLE_OK;
- struct smtp_conn *smtpc = &conn->proto.smtpc;
-
- if((conn->handler->flags & PROTOPT_SSL) && !smtpc->ssldone) {
- result = Curl_ssl_connect_nonblocking(conn, FIRSTSOCKET, &smtpc->ssldone);
- if(result || !smtpc->ssldone)
- return result;
- }
-
- result = Curl_pp_statemach(&smtpc->pp, FALSE);
- *done = (smtpc->state == SMTP_STOP) ? TRUE : FALSE;
-
- return result;
-}
-
-static CURLcode smtp_block_statemach(struct connectdata *conn)
-{
- CURLcode result = CURLE_OK;
- struct smtp_conn *smtpc = &conn->proto.smtpc;
-
- while(smtpc->state != SMTP_STOP && !result)
- result = Curl_pp_statemach(&smtpc->pp, TRUE);
-
- return result;
-}
-
-/* Allocate and initialize the SMTP struct for the current SessionHandle if
- required */
-static CURLcode smtp_init(struct connectdata *conn)
-{
- CURLcode result = CURLE_OK;
- struct SessionHandle *data = conn->data;
- struct SMTP *smtp;
-
- smtp = data->req.protop = calloc(sizeof(struct SMTP), 1);
- if(!smtp)
- result = CURLE_OUT_OF_MEMORY;
-
- return result;
-}
-
-/* For the SMTP "protocol connect" and "doing" phases only */
-static int smtp_getsock(struct connectdata *conn, curl_socket_t *socks,
- int numsocks)
-{
- return Curl_pp_getsock(&conn->proto.smtpc.pp, socks, numsocks);
-}
-
-/***********************************************************************
- *
- * smtp_connect()
- *
- * This function should do everything that is to be considered a part of
- * the connection phase.
- *
- * The variable pointed to by 'done' will be TRUE if the protocol-layer
- * connect phase is done when this function returns, or FALSE if not.
- */
-static CURLcode smtp_connect(struct connectdata *conn, bool *done)
-{
- CURLcode result = CURLE_OK;
- struct smtp_conn *smtpc = &conn->proto.smtpc;
- struct pingpong *pp = &smtpc->pp;
-
- *done = FALSE; /* default to not done yet */
-
- /* We always support persistent connections in SMTP */
- connkeep(conn, "SMTP default");
-
- /* Set the default response time-out */
- pp->response_time = RESP_TIMEOUT;
- pp->statemach_act = smtp_statemach_act;
- pp->endofresp = smtp_endofresp;
- pp->conn = conn;
-
- /* Set the default preferred authentication mechanism */
- smtpc->prefmech = SASL_AUTH_ANY;
-
- /* Initialise the pingpong layer */
- Curl_pp_init(pp);
-
- /* Parse the URL options */
- result = smtp_parse_url_options(conn);
- if(result)
- return result;
-
- /* Parse the URL path */
- result = smtp_parse_url_path(conn);
- if(result)
- return result;
-
- /* Start off waiting for the server greeting response */
- state(conn, SMTP_SERVERGREET);
-
- result = smtp_multi_statemach(conn, done);
-
- return result;
-}
-
-/***********************************************************************
- *
- * smtp_done()
- *
- * The DONE function. This does what needs to be done after a single DO has
- * performed.
- *
- * Input argument is already checked for validity.
- */
-static CURLcode smtp_done(struct connectdata *conn, CURLcode status,
- bool premature)
-{
- CURLcode result = CURLE_OK;
- struct SessionHandle *data = conn->data;
- struct SMTP *smtp = data->req.protop;
- struct pingpong *pp = &conn->proto.smtpc.pp;
- const char *eob;
- ssize_t len;
- ssize_t bytes_written;
-
- (void)premature;
-
- if(!smtp || !pp->conn)
- /* When the easy handle is removed from the multi interface while libcurl
- is still trying to resolve the host name, the SMTP struct is not yet
- initialized. However, the removal action calls Curl_done() which in
- turn calls this function, so we simply return success. */
- return CURLE_OK;
-
- if(status) {
- connclose(conn, "SMTP done with bad status"); /* marked for closure */
- result = status; /* use the already set error code */
- }
- else if(!data->set.connect_only && data->set.upload && data->set.mail_rcpt) {
- /* Calculate the EOB taking into account any terminating CRLF from the
- previous line of the email or the CRLF of the DATA command when there
- is "no mail data". RFC-5321, sect. 4.1.1.4. */
- eob = SMTP_EOB;
- len = SMTP_EOB_LEN;
- if(smtp->trailing_crlf || !conn->data->state.infilesize) {
- eob += 2;
- len -= 2;
- }
-
- /* Send the end of block data */
- result = Curl_write(conn, conn->writesockfd, eob, len, &bytes_written);
- if(result)
- return result;
-
- if(bytes_written != len) {
- /* The whole chunk was not sent so keep it around and adjust the
- pingpong structure accordingly */
- pp->sendthis = strdup(eob);
- pp->sendsize = len;
- pp->sendleft = len - bytes_written;
- }
- else
- /* Successfully sent so adjust the response timeout relative to now */
- pp->response = Curl_tvnow();
-
- state(conn, SMTP_POSTDATA);
-
- /* Run the state-machine
-
- TODO: when the multi interface is used, this _really_ should be using
- the smtp_multi_statemach function but we have no general support for
- non-blocking DONE operations, not in the multi state machine and with
- Curl_done() invokes on several places in the code!
- */
- result = smtp_block_statemach(conn);
- }
-
- /* Cleanup our per-request based variables */
- Curl_safefree(smtp->custom);
-
- /* Clear the transfer mode for the next request */
- smtp->transfer = FTPTRANSFER_BODY;
-
- return result;
-}
-
-/***********************************************************************
- *
- * smtp_perform()
- *
- * This is the actual DO function for SMTP. Transfer a mail, send a command
- * or get some data according to the options previously setup.
- */
-static CURLcode smtp_perform(struct connectdata *conn, bool *connected,
- bool *dophase_done)
-{
- /* This is SMTP and no proxy */
- CURLcode result = CURLE_OK;
- struct SessionHandle *data = conn->data;
- struct SMTP *smtp = data->req.protop;
-
- DEBUGF(infof(conn->data, "DO phase starts\n"));
-
- if(data->set.opt_no_body) {
- /* Requested no body means no transfer */
- smtp->transfer = FTPTRANSFER_INFO;
- }
-
- *dophase_done = FALSE; /* not done yet */
-
- /* Store the first recipient (or NULL if not specified) */
- smtp->rcpt = data->set.mail_rcpt;
-
- /* Start the first command in the DO phase */
- if(data->set.upload && data->set.mail_rcpt)
- /* MAIL transfer */
- result = smtp_perform_mail(conn);
- else
- /* SMTP based command (VRFY, EXPN, NOOP, RSET or HELP) */
- result = smtp_perform_command(conn);
-
- if(result)
- return result;
-
- /* Run the state-machine */
- result = smtp_multi_statemach(conn, dophase_done);
-
- *connected = conn->bits.tcpconnect[FIRSTSOCKET];
-
- if(*dophase_done)
- DEBUGF(infof(conn->data, "DO phase is complete\n"));
-
- return result;
-}
-
-/***********************************************************************
- *
- * smtp_do()
- *
- * This function is registered as 'curl_do' function. It decodes the path
- * parts etc as a wrapper to the actual DO function (smtp_perform).
- *
- * The input argument is already checked for validity.
- */
-static CURLcode smtp_do(struct connectdata *conn, bool *done)
-{
- CURLcode result = CURLE_OK;
-
- *done = FALSE; /* default to false */
-
- /* Parse the custom request */
- result = smtp_parse_custom_request(conn);
- if(result)
- return result;
-
- result = smtp_regular_transfer(conn, done);
-
- return result;
-}
-
-/***********************************************************************
- *
- * smtp_disconnect()
- *
- * Disconnect from an SMTP server. Cleanup protocol-specific per-connection
- * resources. BLOCKING.
- */
-static CURLcode smtp_disconnect(struct connectdata *conn, bool dead_connection)
-{
- struct smtp_conn *smtpc = &conn->proto.smtpc;
-
- /* We cannot send quit unconditionally. If this connection is stale or
- bad in any way, sending quit and waiting around here will make the
- disconnect wait in vain and cause more problems than we need to. */
-
- /* The SMTP session may or may not have been allocated/setup at this
- point! */
- if(!dead_connection && smtpc->pp.conn && smtpc->pp.conn->bits.protoconnstart)
- if(!smtp_perform_quit(conn))
- (void)smtp_block_statemach(conn); /* ignore errors on QUIT */
-
- /* Disconnect from the server */
- Curl_pp_disconnect(&smtpc->pp);
-
- /* Cleanup the SASL module */
- Curl_sasl_cleanup(conn, smtpc->authused);
-
- /* Cleanup our connection based variables */
- Curl_safefree(smtpc->domain);
-
- return CURLE_OK;
-}
-
-/* Call this when the DO phase has completed */
-static CURLcode smtp_dophase_done(struct connectdata *conn, bool connected)
-{
- struct SMTP *smtp = conn->data->req.protop;
-
- (void)connected;
-
- if(smtp->transfer != FTPTRANSFER_BODY)
- /* no data to transfer */
- Curl_setup_transfer(conn, -1, -1, FALSE, NULL, -1, NULL);
-
- return CURLE_OK;
-}
-
-/* Called from multi.c while DOing */
-static CURLcode smtp_doing(struct connectdata *conn, bool *dophase_done)
-{
- CURLcode result = smtp_multi_statemach(conn, dophase_done);
-
- if(result)
- DEBUGF(infof(conn->data, "DO phase failed\n"));
- else if(*dophase_done) {
- result = smtp_dophase_done(conn, FALSE /* not connected */);
-
- DEBUGF(infof(conn->data, "DO phase is complete\n"));
- }
-
- return result;
-}
-
-/***********************************************************************
- *
- * smtp_regular_transfer()
- *
- * The input argument is already checked for validity.
- *
- * Performs all commands done before a regular transfer between a local and a
- * remote host.
- */
-static CURLcode smtp_regular_transfer(struct connectdata *conn,
- bool *dophase_done)
-{
- CURLcode result = CURLE_OK;
- bool connected = FALSE;
- struct SessionHandle *data = conn->data;
-
- /* Make sure size is unknown at this point */
- data->req.size = -1;
-
- /* Set the progress data */
- Curl_pgrsSetUploadCounter(data, 0);
- Curl_pgrsSetDownloadCounter(data, 0);
- Curl_pgrsSetUploadSize(data, -1);
- Curl_pgrsSetDownloadSize(data, -1);
-
- /* Carry out the perform */
- result = smtp_perform(conn, &connected, dophase_done);
-
- /* Perform post DO phase operations if necessary */
- if(!result && *dophase_done)
- result = smtp_dophase_done(conn, connected);
-
- return result;
-}
-
-static CURLcode smtp_setup_connection(struct connectdata *conn)
-{
- struct SessionHandle *data = conn->data;
- CURLcode result;
-
- if(conn->bits.httpproxy && !data->set.tunnel_thru_httpproxy) {
- /* Unless we have asked to tunnel SMTP operations through the proxy, we
- switch and use HTTP operations only */
-#ifndef CURL_DISABLE_HTTP
- if(conn->handler == &Curl_handler_smtp)
- conn->handler = &Curl_handler_smtp_proxy;
- else {
-#ifdef USE_SSL
- conn->handler = &Curl_handler_smtps_proxy;
-#else
- failf(data, "SMTPS not supported!");
- return CURLE_UNSUPPORTED_PROTOCOL;
-#endif
- }
- /* set it up as a HTTP connection instead */
- return conn->handler->setup_connection(conn);
-
-#else
- failf(data, "SMTP over http proxy requires HTTP support built-in!");
- return CURLE_UNSUPPORTED_PROTOCOL;
-#endif
- }
-
- /* Initialise the SMTP layer */
- result = smtp_init(conn);
- if(result)
- return result;
-
- data->state.path++; /* don't include the initial slash */
-
- return CURLE_OK;
-}
-
-/***********************************************************************
- *
- * smtp_parse_url_options()
- *
- * Parse the URL login options.
- */
-static CURLcode smtp_parse_url_options(struct connectdata *conn)
-{
- CURLcode result = CURLE_OK;
- struct smtp_conn *smtpc = &conn->proto.smtpc;
- const char *options = conn->options;
- const char *ptr = options;
- bool reset = TRUE;
-
- while(ptr && *ptr) {
- const char *key = ptr;
-
- while(*ptr && *ptr != '=')
- ptr++;
-
- if(strnequal(key, "AUTH", 4)) {
- size_t len = 0;
- const char *value = ++ptr;
-
- if(reset) {
- reset = FALSE;
- smtpc->prefmech = SASL_AUTH_NONE;
- }
-
- while(*ptr && *ptr != ';') {
- ptr++;
- len++;
- }
-
- 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;
- }
-
- return result;
-}
-
-/***********************************************************************
- *
- * smtp_parse_url_path()
- *
- * Parse the URL path into separate path components.
- */
-static CURLcode smtp_parse_url_path(struct connectdata *conn)
-{
- /* The SMTP struct is already initialised in smtp_connect() */
- struct SessionHandle *data = conn->data;
- struct smtp_conn *smtpc = &conn->proto.smtpc;
- const char *path = data->state.path;
- char localhost[HOSTNAME_MAX + 1];
-
- /* Calculate the path if necessary */
- if(!*path) {
- if(!Curl_gethostname(localhost, sizeof(localhost)))
- path = localhost;
- else
- path = "localhost";
- }
-
- /* URL decode the path and use it as the domain in our EHLO */
- return Curl_urldecode(conn->data, path, 0, &smtpc->domain, NULL, TRUE);
-}
-
-/***********************************************************************
- *
- * smtp_parse_custom_request()
- *
- * Parse the custom request.
- */
-static CURLcode smtp_parse_custom_request(struct connectdata *conn)
-{
- CURLcode result = CURLE_OK;
- struct SessionHandle *data = conn->data;
- struct SMTP *smtp = data->req.protop;
- const char *custom = data->set.str[STRING_CUSTOMREQUEST];
-
- /* URL decode the custom request */
- if(custom)
- result = Curl_urldecode(data, custom, 0, &smtp->custom, NULL, TRUE);
-
- 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_WINDOWS_SSPI)
- 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, ssize_t nread)
-{
- /* When sending a SMTP payload we must detect CRLF. sequences making sure
- they are sent as CRLF.. instead, as a . on the beginning of a line will
- be deleted by the server when not part of an EOB terminator and a
- genuine CRLF.CRLF which isn't escaped will wrongly be detected as end of
- data by the server
- */
- ssize_t i;
- ssize_t si;
- struct SessionHandle *data = conn->data;
- struct SMTP *smtp = data->req.protop;
-
- /* Do we need to allocate the scatch buffer? */
- if(!data->state.scratch) {
- data->state.scratch = malloc(2 * BUFSIZE);
-
- if(!data->state.scratch) {
- failf (data, "Failed to alloc scratch buffer!");
- return CURLE_OUT_OF_MEMORY;
- }
- }
-
- /* This loop can be improved by some kind of Boyer-Moore style of
- approach but that is saved for later... */
- for(i = 0, si = 0; i < nread; i++) {
- if(SMTP_EOB[smtp->eob] == data->req.upload_fromhere[i]) {
- smtp->eob++;
-
- /* Is the EOB potentially the terminating CRLF? */
- if(2 == smtp->eob || SMTP_EOB_LEN == smtp->eob)
- smtp->trailing_crlf = TRUE;
- else
- smtp->trailing_crlf = FALSE;
- }
- else if(smtp->eob) {
- /* A previous substring matched so output that first */
- memcpy(&data->state.scratch[si], SMTP_EOB, smtp->eob);
- si += smtp->eob;
-
- /* Then compare the first byte */
- if(SMTP_EOB[0] == data->req.upload_fromhere[i])
- smtp->eob = 1;
- else
- smtp->eob = 0;
-
- /* Reset the trailing CRLF flag as there was more data */
- smtp->trailing_crlf = FALSE;
- }
-
- /* Do we have a match for CRLF. as per RFC-5321, sect. 4.5.2 */
- if(SMTP_EOB_FIND_LEN == smtp->eob) {
- /* Copy the replacement data to the target buffer */
- memcpy(&data->state.scratch[si], SMTP_EOB_REPL, SMTP_EOB_REPL_LEN);
- si += SMTP_EOB_REPL_LEN;
- smtp->eob = 0;
- }
- else if(!smtp->eob)
- data->state.scratch[si++] = data->req.upload_fromhere[i];
- }
-
- if(smtp->eob) {
- /* A substring matched before processing ended so output that now */
- memcpy(&data->state.scratch[si], SMTP_EOB, smtp->eob);
- si += smtp->eob;
- smtp->eob = 0;
- }
-
- if(si != nread) {
- /* Only use the new buffer if we replaced something */
- nread = si;
-
- /* Upload from the new (replaced) buffer instead */
- data->req.upload_fromhere = data->state.scratch;
-
- /* Set the new amount too */
- data->req.upload_present = nread;
- }
-
- return CURLE_OK;
-}
-
-#endif /* CURL_DISABLE_SMTP */