diff options
Diffstat (limited to 'plugins/FTPFileYM/curl-7.29.0/lib/smtp.c')
| -rw-r--r-- | plugins/FTPFileYM/curl-7.29.0/lib/smtp.c | 1725 |
1 files changed, 0 insertions, 1725 deletions
diff --git a/plugins/FTPFileYM/curl-7.29.0/lib/smtp.c b/plugins/FTPFileYM/curl-7.29.0/lib/smtp.c deleted file mode 100644 index d2d4aeb141..0000000000 --- a/plugins/FTPFileYM/curl-7.29.0/lib/smtp.c +++ /dev/null @@ -1,1725 +0,0 @@ -/*************************************************************************** - * _ _ ____ _ - * Project ___| | | | _ \| | - * / __| | | | |_) | | - * | (__| |_| | _ <| |___ - * \___|\___/|_| \_\_____| - * - * Copyright (C) 1998 - 2013, 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 - * RFC4954 SMTP Authentication - * RFC5321 SMTP protocol - * - ***************************************************************************/ - -#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 "sslgen.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_state_upgrade_tls(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, /* 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_SMTP | 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 */ - 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, /* 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 */ - 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, /* domore_getsock */ - ZERO_NULL, /* perform_getsock */ - ZERO_NULL, /* disconnect */ - ZERO_NULL, /* readwrite */ - PORT_SMTPS, /* defport */ - CURLPROTO_HTTP, /* protocol */ - PROTOPT_NONE /* flags */ -}; -#endif -#endif - -/* Function that checks for an ending smtp status code at the start of the - given string, but also detects the supported authentication mechanisms - from the EHLO AUTH response. */ -static int smtp_endofresp(struct pingpong *pp, int *resp) -{ - char *line = pp->linestart_resp; - size_t len = pp->nread_resp; - struct connectdata *conn = pp->conn; - struct smtp_conn *smtpc = &conn->proto.smtpc; - int result; - size_t wordlen; - - if(len < 4 || !ISDIGIT(line[0]) || !ISDIGIT(line[1]) || !ISDIGIT(line[2])) - return FALSE; /* Nothing for us */ - - /* Extract the response code if necessary */ - if((result = (line[3] == ' ')) != 0) - *resp = curlx_sltosi(strtol(line, NULL, 10)); - - line += 4; - len -= 4; - - /* Does the server support the SIZE capability? */ - if(smtpc->state == SMTP_EHLO && len >= 4 && !memcmp(line, "SIZE", 4)) { - DEBUGF(infof(conn->data, "Server supports SIZE extension.\n")); - smtpc->size_supported = true; - } - - /* Do we have the authentication mechanism list? */ - if(smtpc->state == SMTP_EHLO && len >= 5 && !memcmp(line, "AUTH ", 5)) { - line += 5; - len -= 5; - - 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(wordlen == 5 && !memcmp(line, "LOGIN", 5)) - smtpc->authmechs |= SASL_MECH_LOGIN; - else if(wordlen == 5 && !memcmp(line, "PLAIN", 5)) - smtpc->authmechs |= SASL_MECH_PLAIN; - else if(wordlen == 8 && !memcmp(line, "CRAM-MD5", 8)) - smtpc->authmechs |= SASL_MECH_CRAM_MD5; - else if(wordlen == 10 && !memcmp(line, "DIGEST-MD5", 10)) - smtpc->authmechs |= SASL_MECH_DIGEST_MD5; - else if(wordlen == 6 && !memcmp(line, "GSSAPI", 6)) - smtpc->authmechs |= SASL_MECH_GSSAPI; - else if(wordlen == 8 && !memcmp(line, "EXTERNAL", 8)) - smtpc->authmechs |= SASL_MECH_EXTERNAL; - else if(wordlen == 4 && !memcmp(line, "NTLM", 4)) - smtpc->authmechs |= SASL_MECH_NTLM; - - line += wordlen; - len -= wordlen; - } - } - - return result; -} - -/* 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_PASSWD", - "AUTH_CRAMMD5", - "AUTH_DIGESTMD5", - "AUTH_DIGESTMD5_RESP", - "AUTH_NTLM", - "AUTH_NTLM_TYPE2MSG", - "AUTH", - "MAIL", - "RCPT", - "DATA", - "POSTDATA", - "QUIT", - /* LAST */ - }; - - 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 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 */ - - /* Send the EHLO command */ - result = Curl_pp_sendf(&smtpc->pp, "EHLO %s", smtpc->domain); - - if(result) - return result; - - state(conn, SMTP_EHLO); - - return CURLE_OK; -} - -static CURLcode smtp_state_helo(struct connectdata *conn) -{ - CURLcode result; - 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) - return result; - - state(conn, SMTP_HELO); - - return CURLE_OK; -} - -static CURLcode smtp_authenticate(struct connectdata *conn) -{ - CURLcode result = CURLE_OK; - struct smtp_conn *smtpc = &conn->proto.smtpc; - char *initresp = NULL; - const char *mech = NULL; - size_t len = 0; - smtpstate state1 = SMTP_STOP; - smtpstate state2 = SMTP_STOP; - - /* Check we have a username and password to authenticate with and end the - connect phase if we don't */ - if(!conn->bits.user_passwd) { - state(conn, SMTP_STOP); - - return result; - } - - /* Calculate the supported authentication mechanism, by decreasing order of - security, as well as the initial response where appropriate */ -#ifndef CURL_DISABLE_CRYPTO_AUTH - if(smtpc->authmechs & SASL_MECH_DIGEST_MD5) { - mech = "DIGEST-MD5"; - state1 = SMTP_AUTH_DIGESTMD5; - smtpc->authused = SASL_MECH_DIGEST_MD5; - } - else if(smtpc->authmechs & SASL_MECH_CRAM_MD5) { - mech = "CRAM-MD5"; - state1 = SMTP_AUTH_CRAMMD5; - smtpc->authused = SASL_MECH_CRAM_MD5; - } - else -#endif -#ifdef USE_NTLM - if(smtpc->authmechs & SASL_MECH_NTLM) { - mech = "NTLM"; - state1 = SMTP_AUTH_NTLM; - state2 = SMTP_AUTH_NTLM_TYPE2MSG; - smtpc->authused = SASL_MECH_NTLM; - result = Curl_sasl_create_ntlm_type1_message(conn->user, conn->passwd, - &conn->ntlm, - &initresp, &len); - } - else -#endif - if(smtpc->authmechs & SASL_MECH_LOGIN) { - mech = "LOGIN"; - state1 = SMTP_AUTH_LOGIN; - state2 = SMTP_AUTH_PASSWD; - smtpc->authused = SASL_MECH_LOGIN; - result = Curl_sasl_create_login_message(conn->data, conn->user, - &initresp, &len); - } - else if(smtpc->authmechs & SASL_MECH_PLAIN) { - mech = "PLAIN"; - state1 = SMTP_AUTH_PLAIN; - state2 = SMTP_AUTH; - smtpc->authused = SASL_MECH_PLAIN; - result = Curl_sasl_create_plain_message(conn->data, conn->user, - conn->passwd, &initresp, &len); - } - else { - /* Other mechanisms not supported */ - infof(conn->data, "No known authentication mechanisms supported!\n"); - result = CURLE_LOGIN_DENIED; - } - - if(!result) { - /* Perform SASL based authentication */ - if(initresp && - strlen(mech) + len <= 512 - 8) { /* AUTH <mech> ...<crlf> */ - result = Curl_pp_sendf(&smtpc->pp, "AUTH %s %s", mech, initresp); - - if(!result) - state(conn, state2); - } - else { - result = Curl_pp_sendf(&smtpc->pp, "AUTH %s", mech); - - if(!result) - state(conn, state1); - } - - Curl_safefree(initresp); - } - - 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); -} - -#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 - -/* 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); - return CURLE_FTP_WEIRD_SERVER_REPLY; - } - - result = smtp_state_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_authenticate(conn); - } - else - result = smtp_state_upgrade_tls(conn); - - return result; -} - -static CURLcode smtp_state_upgrade_tls(struct connectdata *conn) -{ - struct smtp_conn *smtpc = &conn->proto.smtpc; - CURLcode result; - - 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_state_ehlo(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; - - (void)instate; /* no use for this yet */ - - if(smtpcode/100 != 2) { - if((data->set.use_ssl <= CURLUSESSL_TRY || conn->ssl[FIRSTSOCKET].use) && - !conn->bits.user_passwd) - result = smtp_state_helo(conn); - else { - failf(data, "Remote access denied: %d", smtpcode); - result = CURLE_REMOTE_ACCESS_DENIED; - } - } - else if(data->set.use_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(&conn->proto.smtpc.pp, "STARTTLS"); - if(!result) - state(conn, SMTP_STARTTLS); - } - else - result = smtp_authenticate(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); - - /* Send the message */ - if(!result) { - if(plainauth) { - result = Curl_pp_sendf(&conn->proto.smtpc.pp, "%s", plainauth); - - if(!result) - state(conn, SMTP_AUTH); - } - - 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); - - /* Send the user */ - if(!result) { - if(authuser) { - result = Curl_pp_sendf(&conn->proto.smtpc.pp, "%s", authuser); - - if(!result) - state(conn, SMTP_AUTH_PASSWD); - } - - Curl_safefree(authuser); - } - } - - return result; -} - -/* For responses to user entry of AUTH LOGIN */ -static CURLcode smtp_state_auth_passwd_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); - - /* Send the password */ - if(!result) { - if(authpasswd) { - result = Curl_pp_sendf(&conn->proto.smtpc.pp, "%s", authpasswd); - - if(!result) - state(conn, SMTP_AUTH); - } - - 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 *chlg64 = data->state.buffer; - size_t len = 0; - char *rplyb64 = NULL; - - (void)instate; /* no use for this yet */ - - if(smtpcode != 334) { - failf(data, "Access denied: %d", smtpcode); - return CURLE_LOGIN_DENIED; - } - - /* Get the challenge */ - for(chlg64 += 4; *chlg64 == ' ' || *chlg64 == '\t'; chlg64++) - ; - - /* Terminate the challenge */ - if(*chlg64 != '=') { - for(len = strlen(chlg64); len--;) - if(chlg64[len] != '\r' && chlg64[len] != '\n' && chlg64[len] != ' ' && - chlg64[len] != '\t') - break; - - if(++len) { - chlg64[len] = '\0'; - } - } - - /* Create the response message */ - result = Curl_sasl_create_cram_md5_message(data, chlg64, conn->user, - conn->passwd, &rplyb64, &len); - - /* Send the response */ - if(!result) { - if(rplyb64) { - result = Curl_pp_sendf(&conn->proto.smtpc.pp, "%s", rplyb64); - - if(!result) - state(conn, SMTP_AUTH); - } - - 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 = data->state.buffer; - size_t len = 0; - char *rplyb64 = NULL; - - (void)instate; /* no use for this yet */ - - if(smtpcode != 334) { - failf(data, "Access denied: %d", smtpcode); - return CURLE_LOGIN_DENIED; - } - - /* Get the challenge */ - for(chlg64 += 4; *chlg64 == ' ' || *chlg64 == '\t'; chlg64++) - ; - - /* Create the response message */ - result = Curl_sasl_create_digest_md5_message(data, chlg64, conn->user, - conn->passwd, "smtp", - &rplyb64, &len); - - /* Send the response */ - if(!result) { - if(rplyb64) { - 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, ""); - - if(!result) - state(conn, SMTP_AUTH); - } - - 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); - - /* Send the message */ - if(!result) { - if(type1msg) { - 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 *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 { - /* Create the type-3 message */ - result = Curl_sasl_create_ntlm_type3_message(data, - data->state.buffer + 4, - conn->user, conn->passwd, - &conn->ntlm, - &type3msg, &len); - - /* Send the message */ - if(!result) { - if(type3msg) { - result = Curl_pp_sendf(&conn->proto.smtpc.pp, "%s", type3msg); - - if(!result) - state(conn, SMTP_AUTH); - } - - Curl_safefree(type3msg); - } - } - - return result; -} -#endif - -/* For the final responses to the AUTH sequence */ -static CURLcode smtp_state_auth_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; -} - -/* Start the DO phase */ -static CURLcode smtp_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-2821, sect. 3.7 */ - 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->set.infilesize > 0) { - size = aprintf("%" FORMAT_OFF_T, data->set.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) - return result; - - state(conn, SMTP_MAIL); - - return result; -} - -static CURLcode smtp_rcpt_to(struct connectdata *conn) -{ - CURLcode result = CURLE_OK; - struct smtp_conn *smtpc = &conn->proto.smtpc; - - /* Send the RCPT TO command */ - if(smtpc->rcpt) { - if(smtpc->rcpt->data[0] == '<') - result = Curl_pp_sendf(&conn->proto.smtpc.pp, "RCPT TO:%s", - smtpc->rcpt->data); - else - result = Curl_pp_sendf(&conn->proto.smtpc.pp, "RCPT TO:<%s>", - smtpc->rcpt->data); - if(!result) - state(conn, SMTP_RCPT); - } - - 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; - state(conn, SMTP_STOP); - } - else { - struct smtp_conn *smtpc = &conn->proto.smtpc; - smtpc->rcpt = data->set.mail_rcpt; - - result = smtp_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; - - (void)instate; /* no use for this yet */ - - if(smtpcode/100 != 2) { - failf(data, "RCPT failed: %d", smtpcode); - result = CURLE_SEND_ERROR; - state(conn, SMTP_STOP); - } - else { - struct smtp_conn *smtpc = &conn->proto.smtpc; - - if(smtpc->rcpt) { - smtpc->rcpt = smtpc->rcpt->next; - result = smtp_rcpt_to(conn); - - /* If we failed or still are sending RCPT data then return */ - if(result || smtpc->rcpt) - return result; - } - - /* Send the DATA command */ - result = Curl_pp_sendf(&conn->proto.smtpc.pp, "DATA"); - - if(result) - return result; - - state(conn, SMTP_DATA); - } - - return result; -} - -/* For DATA response */ -static CURLcode smtp_state_data_resp(struct connectdata *conn, int smtpcode, - smtpstate instate) -{ - struct SessionHandle *data = conn->data; - struct FTP *smtp = data->state.proto.smtp; - - (void)instate; /* no use for this yet */ - - if(smtpcode != 354) { - state(conn, SMTP_STOP); - return CURLE_SEND_ERROR; - } - - /* SMTP upload */ - Curl_setup_transfer(conn, -1, -1, FALSE, NULL, /* no download */ - FIRSTSOCKET, smtp->bytecountp); - - /* End of do phase */ - state(conn, SMTP_STOP); - - return CURLE_OK; -} - -/* 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; - 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_state_upgrade_tls(conn); - - /* Flush any data that needs to be sent */ - if(pp->sendleft) - return Curl_pp_flushsend(pp); - - /* 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(smtpc->state != SMTP_QUIT) - data->info.httpcode = smtpcode; - - if(smtpcode) { - /* 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_PASSWD: - result = smtp_state_auth_passwd_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 - - case SMTP_AUTH: - result = smtp_state_auth_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; - } - } - - 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; - - if((conn->handler->flags & PROTOPT_SSL) && !smtpc->ssldone) - result = Curl_ssl_connect_nonblocking(conn, FIRSTSOCKET, &smtpc->ssldone); - else - result = Curl_pp_multi_statemach(&smtpc->pp); - - *done = (smtpc->state == SMTP_STOP) ? TRUE : FALSE; - - 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 SMTP struct for the current SessionHandle if - required */ -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() - * - * 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. When - * called as a part of the easy interface, it will always be TRUE. - */ -static CURLcode smtp_connect(struct connectdata *conn, bool *done) -{ - CURLcode result; - struct smtp_conn *smtpc = &conn->proto.smtpc; - struct pingpong *pp = &smtpc->pp; - const char *path = conn->data->state.path; - char localhost[HOSTNAME_MAX + 1]; - - *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 persistent 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; - - /* Initialise the response reader stuff */ - Curl_pp_init(pp); - - /* Set the default response time-out */ - pp->response_time = RESP_TIMEOUT; - pp->statemach_act = smtp_statemach_act; - pp->endofresp = smtp_endofresp; - pp->conn = conn; - - /* 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 */ - result = Curl_urldecode(conn->data, path, 0, &smtpc->domain, NULL, TRUE); - 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) -{ - struct SessionHandle *data = conn->data; - struct FTP *smtp = data->state.proto.smtp; - CURLcode result = CURLE_OK; - ssize_t bytes_written; - - (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 */ - } - else if(!data->set.connect_only) { - struct smtp_conn *smtpc = &conn->proto.smtpc; - struct pingpong *pp = &smtpc->pp; - - /* Send the end of block data */ - result = Curl_write(conn, - conn->writesockfd, /* socket to send to */ - SMTP_EOB, /* buffer pointer */ - SMTP_EOB_LEN, /* buffer size */ - &bytes_written); /* actually sent away */ - - if(result) - return result; - - if(bytes_written != SMTP_EOB_LEN) { - /* The whole chunk was not sent so keep it around and adjust the - pingpong structure accordingly */ - pp->sendthis = strdup(SMTP_EOB); - pp->sendsize = SMTP_EOB_LEN; - pp->sendleft = SMTP_EOB_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_easy_statemach(conn); - } - - /* Clear the transfer mode for the 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, - 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 */ - 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 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"); - 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, - 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) - (void)smtp_quit(conn); /* ignore errors on the LOGOUT */ - - /* 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 FTP *smtp = conn->data->state.proto.smtp; - - (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; - - Curl_pgrsSetUploadCounter(data, 0); - Curl_pgrsSetDownloadCounter(data, 0); - Curl_pgrsSetUploadSize(data, 0); - Curl_pgrsSetDownloadSize(data, 0); - - result = smtp_perform(conn, &connected, dophase_done); - - if(CURLE_OK == result) { - if(!*dophase_done) - /* The DO phase has not completed yet */ - return CURLE_OK; - - result = smtp_dophase_done(conn, connected); - } - - 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; -} - -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 smtp_conn *smtpc = &conn->proto.smtpc; - struct SessionHandle *data = conn->data; - - /* 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[smtpc->eob] == data->req.upload_fromhere[i]) - smtpc->eob++; - else if(smtpc->eob) { - /* A previous substring matched so output that first */ - memcpy(&data->state.scratch[si], SMTP_EOB, smtpc->eob); - si += smtpc->eob; - - /* Then compare the first byte */ - if(SMTP_EOB[0] == data->req.upload_fromhere[i]) - smtpc->eob = 1; - else - smtpc->eob = 0; - } - - /* Do we have a match for CRLF. as per RFC-2821, sect. 4.5.2 */ - if(SMTP_EOB_FIND_LEN == smtpc->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; - smtpc->eob = 0; - } - else if(!smtpc->eob) - data->state.scratch[si++] = data->req.upload_fromhere[i]; - } - - if(smtpc->eob) { - /* A substring matched before processing ended so output that now */ - memcpy(&data->state.scratch[si], SMTP_EOB, smtpc->eob); - si += smtpc->eob; - smtpc->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 */ |