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1cfa52b67d
curl/lib/smtp.c
Daniel Stenberg d911e22d8f remove some unused code
2009-12-20 22:11:16 +00:00

896 lines
25 KiB
C
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/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2009, 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.
*
* RFC2821 SMTP protocol
*
* $Id$
***************************************************************************/
#include "setup.h"
#ifndef CURL_DISABLE_SMTP
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdarg.h>
#include <ctype.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#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 "easyif.h" /* for Curl_convert_... prototypes */
#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 "sslgen.h"
#include "connect.h"
#include "strerror.h"
#include "select.h"
#include "multiif.h"
#include "url.h"
#include "rawstr.h"
#include "strtoofft.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, bool premature);
static CURLcode smtp_connect(struct connectdata *conn, bool *done);
static CURLcode smtp_disconnect(struct connectdata *conn);
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);
/*
* 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, /* perform_getsock */
smtp_disconnect, /* disconnect */
PORT_SMTP, /* defport */
PROT_SMTP /* protocol */
};
#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, /* perform_getsock */
smtp_disconnect, /* disconnect */
PORT_SMTPS, /* defport */
PROT_SMTP | PROT_SMTPS | PROT_SSL /* protocol */
};
#endif
#ifndef CURL_DISABLE_HTTP
/*
* HTTP-proxyed SMTP protocol handler.
*/
const struct Curl_handler Curl_handler_smtp_proxy = {
"SMTP", /* scheme */
ZERO_NULL, /* 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, /* perform_getsock */
ZERO_NULL, /* disconnect */
PORT_SMTP, /* defport */
PROT_HTTP /* protocol */
};
#ifdef USE_SSL
/*
* HTTP-proxyed SMTPS protocol handler.
*/
const struct Curl_handler Curl_handler_smtps_proxy = {
"SMTPS", /* scheme */
ZERO_NULL, /* 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, /* perform_getsock */
ZERO_NULL, /* disconnect */
PORT_SMTPS, /* defport */
PROT_HTTP /* protocol */
};
#endif
#endif
/* fucntion that checks for an ending smtp status code at the start of the
given string */
static int smtp_endofresp(struct pingpong *pp, int *resp)
{
char *line = pp->linestart_resp;
size_t len = pp->nread_resp;
if( (len >= 4) && (' ' == line[3]) &&
ISDIGIT(line[0]) && ISDIGIT(line[1]) && ISDIGIT(line[2])) {
*resp=atoi(line);
return TRUE;
}
return FALSE; /* nothing for us */
}
/* This is the ONLY way to change SMTP state! */
static void state(struct connectdata *conn,
smtpstate newstate)
{
#if defined(DEBUGBUILD) && !defined(CURL_DISABLE_VERBOSE_STRINGS)
/* for debug purposes */
static const char * const names[]={
"STOP",
"SERVERGREET",
"EHLO",
"STARTTLS",
"MAIL",
"RCPT",
"DATA",
"QUIT",
/* LAST */
};
#endif
struct smtp_conn *smtpc = &conn->proto.smtpc;
#if defined(DEBUGBUILD) && !defined(CURL_DISABLE_VERBOSE_STRINGS)
if(smtpc->state != newstate)
infof(conn->data, "SMTP %p state change from %s to %s\n",
smtpc, names[smtpc->state], names[newstate]);
#endif
smtpc->state = newstate;
}
static CURLcode smtp_state_ehlo(struct connectdata *conn)
{
CURLcode result;
struct FTP *smtp = conn->data->state.proto.smtp;
/* send EHLO */
result = Curl_pp_sendf(&conn->proto.smtpc.pp, "EHLO %s",
smtp->user?smtp->user:"");
if(result)
return result;
state(conn, SMTP_EHLO);
return CURLE_OK;
}
/* 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);
}
/* 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 != 'O') {
failf(data, "STARTTLS denied. %c", smtpcode);
result = CURLE_LOGIN_DENIED;
}
else {
/* Curl_ssl_connect is BLOCKING */
result = Curl_ssl_connect(conn, FIRSTSOCKET);
if(CURLE_OK == result) {
conn->protocol |= PROT_SMTPS;
result = smtp_state_ehlo(conn);
}
}
state(conn, SMTP_STOP);
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;
(void)instate; /* no use for this yet */
if(smtpcode/100 != 2) {
failf(data, "Access denied: %d", smtpcode);
result = CURLE_LOGIN_DENIED;
}
/* end the connect phase */
state(conn, SMTP_STOP);
return result;
}
/* start the DO phase */
static CURLcode smtp_mail(struct connectdata *conn)
{
CURLcode result = CURLE_OK;
struct SessionHandle *data = conn->data;
/* send MAIL */
result = Curl_pp_sendf(&conn->proto.smtpc.pp, "MAIL FROM:<%s>",
data->set.str[STRING_MAIL_FROM]);
if(result)
return result;
state(conn, SMTP_MAIL);
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, "Access denied: %d", smtpcode);
result = CURLE_LOGIN_DENIED;
state(conn, SMTP_STOP);
}
else {
/* send RCPT TO */
result = Curl_pp_sendf(&conn->proto.smtpc.pp, "RCPT TO:<%s>",
data->set.str[STRING_MAIL_RCPT]);
if(result)
return result;
state(conn, SMTP_RCPT);
}
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;
(void)instate; /* no use for this yet */
if(smtpcode/100 != 2) {
failf(data, "Access denied: %d", smtpcode);
result = CURLE_LOGIN_DENIED;
state(conn, SMTP_STOP);
}
else {
/* send DATA */
result = Curl_pp_sendf(&conn->proto.smtpc.pp, "DATA", "");
if(result)
return result;
state(conn, SMTP_DATA);
}
return result;
}
/* for the DATA response */
static CURLcode smtp_state_data_resp(struct connectdata *conn,
int smtpcode,
smtpstate instate)
{
CURLcode result = CURLE_OK;
struct SessionHandle *data = conn->data;
struct FTP *smtp = data->state.proto.smtp;
(void)instate; /* no use for this yet */
if(smtpcode/100 != 2) {
state(conn, SMTP_STOP);
return CURLE_RECV_ERROR;
}
/* SMTP upload */
result=Curl_setup_transfer(conn, FIRSTSOCKET, -1, FALSE,
smtp->bytecountp,
-1, NULL); /* no upload here */
state(conn, SMTP_STOP);
return result;
}
static CURLcode smtp_statemach_act(struct connectdata *conn)
{
CURLcode result;
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;
if(pp->sendleft)
/* we have a piece of a command still left to send */
return Curl_pp_flushsend(pp);
/* we read a piece of response */
result = Curl_pp_readresp(sock, pp, &smtpcode, &nread);
if(result)
return result;
if(smtpcode) {
/* we have now received a full SMTP server response */
switch(smtpc->state) {
case SMTP_SERVERGREET:
if(smtpcode/100 != 2) {
failf(data, "Got unexpected smtp-server response: %d", smtpcode);
return CURLE_FTP_WEIRD_SERVER_REPLY;
}
if(data->set.ftp_ssl && !conn->ssl[FIRSTSOCKET].use) {
/* We don't have a SSL/TLS connection yet, but SSL is requested. Switch
to TLS connection now */
result = Curl_pp_sendf(&smtpc->pp, "STARTTLS", NULL);
state(conn, SMTP_STARTTLS);
}
else
result = smtp_state_ehlo(conn);
if(result)
return result;
break;
case SMTP_EHLO:
result = smtp_state_ehlo_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_STARTTLS:
result = smtp_state_starttls_resp(conn, smtpcode, smtpc->state);
break;
case SMTP_DATA:
result = smtp_state_data_resp(conn, smtpcode, smtpc->state);
break;
case SMTP_QUIT:
/* fallthrough, just stop! */
default:
/* internal error */
state(conn, SMTP_STOP);
break;
}
}
return result;
}
/* called repeatedly until done from multi.c */
static CURLcode smtp_multi_statemach(struct connectdata *conn,
bool *done)
{
struct smtp_conn *smtpc = &conn->proto.smtpc;
CURLcode result = Curl_pp_multi_statemach(&smtpc->pp);
*done = (bool)(smtpc->state == SMTP_STOP);
return result;
}
static CURLcode smtp_easy_statemach(struct connectdata *conn)
{
struct smtp_conn *smtpc = &conn->proto.smtpc;
struct pingpong *pp = &smtpc->pp;
CURLcode result = CURLE_OK;
while(smtpc->state != SMTP_STOP) {
result = Curl_pp_easy_statemach(pp);
if(result)
break;
}
return result;
}
/*
* Allocate and initialize the struct SMTP for the current SessionHandle. If
* need be.
*/
static CURLcode smtp_init(struct connectdata *conn)
{
struct SessionHandle *data = conn->data;
struct FTP *smtp = data->state.proto.smtp;
if(!smtp) {
smtp = data->state.proto.smtp = calloc(sizeof(struct FTP), 1);
if(!smtp)
return CURLE_OUT_OF_MEMORY;
}
/* get some initial data into the smtp struct */
smtp->bytecountp = &data->req.bytecount;
/* No need to duplicate user+password, the connectdata struct won't change
during a session, but we re-init them here since on subsequent inits
since the conn struct may have changed or been replaced.
*/
smtp->user = conn->user;
smtp->passwd = conn->passwd;
return CURLE_OK;
}
/*
* smtp_connect() should do everything that is to be considered a part of
* the connection phase.
*
* The variable 'done' points to will be TRUE if the protocol-layer connect
* phase is done when this function returns, or FALSE is not. When called as
* a part of the easy interface, it will always be TRUE.
*/
static CURLcode smtp_connect(struct connectdata *conn,
bool *done) /* see description above */
{
CURLcode result;
struct smtp_conn *smtpc = &conn->proto.smtpc;
struct SessionHandle *data=conn->data;
struct pingpong *pp=&smtpc->pp;
*done = FALSE; /* default to not done yet */
/* If there already is a protocol-specific struct allocated for this
sessionhandle, deal with it */
Curl_reset_reqproto(conn);
result = smtp_init(conn);
if(CURLE_OK != result)
return result;
/* We always support persistant connections on smtp */
conn->bits.close = FALSE;
pp->response_time = RESP_TIMEOUT; /* set default response time-out */
pp->statemach_act = smtp_statemach_act;
pp->endofresp = smtp_endofresp;
pp->conn = conn;
#if !defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_PROXY)
if(conn->bits.tunnel_proxy && conn->bits.httpproxy) {
/* for SMTP over HTTP proxy */
struct HTTP http_proxy;
struct FTP *smtp_save;
/* BLOCKING */
/* We want "seamless" SMTP operations through HTTP proxy tunnel */
/* Curl_proxyCONNECT is based on a pointer to a struct HTTP at the member
* conn->proto.http; we want SMTP through HTTP and we have to change the
* member temporarily for connecting to the HTTP proxy. After
* Curl_proxyCONNECT we have to set back the member to the original struct
* SMTP pointer
*/
smtp_save = data->state.proto.smtp;
memset(&http_proxy, 0, sizeof(http_proxy));
data->state.proto.http = &http_proxy;
result = Curl_proxyCONNECT(conn, FIRSTSOCKET,
conn->host.name, conn->remote_port);
data->state.proto.smtp = smtp_save;
if(CURLE_OK != result)
return result;
}
#endif /* !CURL_DISABLE_HTTP && !CURL_DISABLE_PROXY */
if(conn->protocol & PROT_SMTPS) {
/* BLOCKING */
/* SMTPS is simply smtp with SSL for the control channel */
/* now, perform the SSL initialization for this socket */
result = Curl_ssl_connect(conn, FIRSTSOCKET);
if(result)
return result;
}
Curl_pp_init(pp); /* init the response reader stuff */
pp->response_time = RESP_TIMEOUT; /* set default response time-out */
pp->statemach_act = smtp_statemach_act;
pp->endofresp = smtp_endofresp;
pp->conn = conn;
/* When we connect, we start in the state where we await the server greeting
*/
state(conn, SMTP_SERVERGREET);
if(data->state.used_interface == Curl_if_multi)
result = smtp_multi_statemach(conn, done);
else {
result = smtp_easy_statemach(conn);
if(!result)
*done = TRUE;
}
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)
{
struct SessionHandle *data = conn->data;
struct FTP *smtp = data->state.proto.smtp;
CURLcode result=CURLE_OK;
(void)premature;
if(!smtp)
/* When the easy handle is removed from the multi while libcurl is still
* trying to resolve the host name, it seems that the smtp struct is not
* yet initialized, but the removal action calls Curl_done() which calls
* this function. So we simply return success if no smtp pointer is set.
*/
return CURLE_OK;
if(status) {
conn->bits.close = TRUE; /* marked for closure */
result = status; /* use the already set error code */
}
/* clear these for next connection */
smtp->transfer = FTPTRANSFER_BODY;
return result;
}
/***********************************************************************
*
* smtp_perform()
*
* This is the actual DO function for SMTP. Get a file/directory according to
* the options previously setup.
*/
static
CURLcode smtp_perform(struct connectdata *conn,
bool *connected, /* connect status after PASV / PORT */
bool *dophase_done)
{
/* this is SMTP and no proxy */
CURLcode result=CURLE_OK;
DEBUGF(infof(conn->data, "DO phase starts\n"));
if(conn->data->set.opt_no_body) {
/* requested no body means no transfer... */
struct FTP *smtp = conn->data->state.proto.smtp;
smtp->transfer = FTPTRANSFER_INFO;
}
*dophase_done = FALSE; /* not done yet */
/* start the first command in the DO phase */
result = smtp_mail(conn);
if(result)
return result;
/* run the state-machine */
if(conn->data->state.used_interface == Curl_if_multi)
result = smtp_multi_statemach(conn, dophase_done);
else {
result = smtp_easy_statemach(conn);
*dophase_done = TRUE; /* with the easy interface we are done here */
}
*connected = conn->bits.tcpconnect;
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 retcode = CURLE_OK;
*done = FALSE; /* default to false */
/*
Since connections can be re-used between SessionHandles, this might be a
connection already existing but on a fresh SessionHandle struct so we must
make sure we have a good 'struct SMTP' to play with. For new connections,
the struct SMTP is allocated and setup in the smtp_connect() function.
*/
Curl_reset_reqproto(conn);
retcode = smtp_init(conn);
if(retcode)
return retcode;
retcode = smtp_regular_transfer(conn, done);
return retcode;
}
/***********************************************************************
*
* smtp_quit()
*
* This should be called before calling sclose(). We should then wait for the
* response from the server before returning. The calling code should then try
* to close the connection.
*
*/
static CURLcode smtp_quit(struct connectdata *conn)
{
CURLcode result = CURLE_OK;
result = Curl_pp_sendf(&conn->proto.smtpc.pp, "QUIT", NULL);
if(result)
return result;
state(conn, SMTP_QUIT);
result = smtp_easy_statemach(conn);
return result;
}
/***********************************************************************
*
* smtp_disconnect()
*
* Disconnect from an SMTP server. Cleanup protocol-specific per-connection
* resources. BLOCKING.
*/
static CURLcode smtp_disconnect(struct connectdata *conn)
{
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! */
(void)smtp_quit(conn); /* ignore errors on the LOGOUT */
Curl_pp_disconnect(&smtpc->pp);
return CURLE_OK;
}
/* call this when the DO phase has completed */
static CURLcode smtp_dophase_done(struct connectdata *conn,
bool connected)
{
CURLcode result = CURLE_OK;
struct FTP *smtp = conn->data->state.proto.smtp;
(void)connected;
if(smtp->transfer != FTPTRANSFER_BODY)
/* no data to transfer */
result=Curl_setup_transfer(conn, -1, -1, FALSE, NULL, -1, NULL);
return result;
}
/* called from multi.c while DOing */
static CURLcode smtp_doing(struct connectdata *conn,
bool *dophase_done)
{
CURLcode result;
result = smtp_multi_statemach(conn, dophase_done);
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;
data->req.size = -1; /* make sure this is unknown at this point */
Curl_pgrsSetUploadCounter(data, 0);
Curl_pgrsSetDownloadCounter(data, 0);
Curl_pgrsSetUploadSize(data, 0);
Curl_pgrsSetDownloadSize(data, 0);
result = smtp_perform(conn,
&connected, /* have we connected after PASV/PORT */
dophase_done); /* all commands in the DO-phase done? */
if(CURLE_OK == result) {
if(!*dophase_done)
/* the DO phase has not completed yet */
return CURLE_OK;
result = smtp_dophase_done(conn, connected);
if(result)
return result;
}
return result;
}
static CURLcode smtp_setup_connection(struct connectdata * conn)
{
struct SessionHandle *data = conn->data;
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
}
/*
* We explicitly mark this connection as persistent here as we're doing
* SMTP over HTTP and thus we accidentally avoid setting this value
* otherwise.
*/
conn->bits.close = FALSE;
#else
failf(data, "SMTP over http proxy requires HTTP support built-in!");
return CURLE_UNSUPPORTED_PROTOCOL;
#endif
}
data->state.path++; /* don't include the initial slash */
return CURLE_OK;
}
#endif /* CURL_DISABLE_SMTP */
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