-/*
- * Copyright notice from original mutt:
- * [none]
- *
- * Parts were written/modified by:
- * Christian Gall <cg@cgall.de>
- * Rocco Rutte <pdmef@cs.tu-berlin.de>
- *
- * This file is part of mutt-ng, see http://www.muttng.org/.
- * It's licensed under the GNU General Public License,
- * please see the file GPL in the top level source directory.
- */
-
-#include <lib-lib/lib-lib.h>
-
-#if defined(HAVE_GNUTLS_OPENSSL_H)
-#include <openssl/ssl.h>
-#endif
-
-#include <auth-client.h>
-#include <libesmtp.h>
-
-#include <lib-ui/enter.h>
-#include <lib-ui/curses.h>
-#include "mutt.h"
-#include "send_smtp.h"
-
-static char authpass[STRING] = "";
-
-#define FAIL() \
- do { \
- ret = -1; \
- goto Done; \
- } while (0)
-#define MSGFAIL(msg) \
- do { \
- mutt_error("%s", msg); \
- FAIL(); \
- } while (0)
-#define LIBCFAIL(msg) \
- do { \
- mutt_error("%s: %s", msg, strerror(errno)); \
- FAIL(); \
- } while (0)
-#define SMTPFAIL(msg) \
- do { \
- _send_smtp_perror(msg); \
- FAIL(); \
- } while (0)
-#define extna(msg) { mutt_error (_("SMTP Extension '%s' not supported by MTA."), \
- msg); sleep (1); }
-
-/*
- * _send_smtp_ensure_init
- * Make sure the libESMTP support in mutt is initialized at some time.
- */
-static void _send_smtp_ensure_init ()
-{
- static int libesmtp_init = 0;
-
- if (!libesmtp_init) {
- if (SmtpAuthUser)
- auth_client_init ();
- libesmtp_init = 1;
- }
-}
-
-/*
- * _send_smtp_perror
- * Prints 'msg', a colon, and then a string representation of the
- * libesmtp errno as a mutt error.
- */
-static void _send_smtp_perror (const char *msg)
-{
- char buf[512];
-
- mutt_error ("%s: %s", msg,
- smtp_strerror (smtp_errno (), buf, sizeof (buf)));
-}
-
-/*
- * _send_smtp_add_recipients
- * Adds every address in 'addr' as a recipient to the smtp message
- * 'message'. Note that this does not mean that they will necessarily
- * show up in the mail headers (e.g., when bcc'ing). Returns 0 upon
- * success, -1 upon failure (and prints an error message).
- *
- * Very similar to sendlib.c::add_args
- */
-static int
-_send_smtp_add_recipients (smtp_message_t message, address_t * addr)
-{
- int ret = 0;
-
- for (; addr; addr = addr->next) {
- /* weed out group mailboxes, since those are for display only */
- if (addr->mailbox && !addr->group) {
- if (!smtp_add_recipient (message, addr->mailbox))
- SMTPFAIL ("smtp_add_recipient");
- }
- }
-
-Done:
- return ret;
-}
-
-static int
-_send_smtp_auth_interact (auth_client_request_t request,
- char **result, int fields,
- void *arg __attribute__ ((unused)))
-{
- int i;
-
- for (i = 0; i < fields; i++) {
- if (request[i].flags & AUTH_USER) {
- result[i] = SmtpAuthUser;
- } else if (request[i].flags & AUTH_PASS) {
- if (SmtpAuthPass) {
- result[i] = SmtpAuthPass;
- } else {
- if (authpass[0] == '\0') {
- char prompt[STRING];
-
- snprintf(prompt, sizeof(prompt), "%s%s: ", request[i].prompt,
- request[i].flags & AUTH_CLEARTEXT ? " (not encrypted)" :
- "");
- mutt_get_field_unbuffered(prompt, authpass, sizeof(authpass),
- M_PASS);
- }
- result[i] = authpass;
- }
- }
- }
-
- return 1;
-}
-
-#define BUFLEN 8192
-
-static const char *
-_send_smtp_messagefp_cb(void **buf, int *len, void *arg)
-{
- int octets;
-
- if (*buf == NULL)
- *buf = xmalloc(BUFLEN);
-
- if (len == NULL) {
- rewind ((FILE *) arg);
- return NULL;
- }
-
- if (fgets (*buf, BUFLEN - 2, (FILE *) arg) == NULL) {
- octets = 0;
- }
- else {
- char *p = strchr (*buf, '\0');
-
- if (p[-1] == '\n' && p[-2] != '\r') {
- m_strcpy(p - 1, (char *) *buf + BUFLEN - p + 1, "\r\n");
- p++;
- }
- octets = p - (char *) *buf;
- }
-
- *len = octets;
- return *buf;
-}
-
-static int handle_invalid_peer_certificate (long vfy_result) {
-#if defined (HAVE_GNUTLS_OPENSSL_H)
- mutt_error (_("Error verifying certificate: %s"),
- NONULL (X509_verify_cert_error_string (vfy_result)));
-#else
- mutt_error (_("Error verifying certificate. Error Code: %lu"), vfy_result);
-#endif
- sleep(2);
- return 1; /* Accept the problem */
-}
-
-static void event_cb (smtp_session_t session __attribute__ ((unused)),
- int event_no, void *arg,...)
-{
- va_list alist;
- int *ok;
-
- va_start(alist, arg);
- switch(event_no) {
- case SMTP_EV_CONNECT:
- case SMTP_EV_MAILSTATUS:
- case SMTP_EV_RCPTSTATUS:
- case SMTP_EV_MESSAGEDATA:
- case SMTP_EV_MESSAGESENT:
- case SMTP_EV_DISCONNECT: break;
- case SMTP_EV_WEAK_CIPHER: {
- int bits;
- bits = va_arg(alist, long); ok = va_arg(alist, int*);
- mutt_message (_("SMTP_EV_WEAK_CIPHER, bits=%d - accepted."), bits);
- sleep(1);
- *ok = 1; break;
- }
- case SMTP_EV_STARTTLS_OK:
- mutt_message (_("Using TLS"));
- sleep(1);
- break;
- case SMTP_EV_INVALID_PEER_CERTIFICATE: {
- long vfy_result;
- vfy_result = va_arg(alist, long); ok = va_arg(alist, int*);
- *ok = handle_invalid_peer_certificate(vfy_result);
- sleep(1);
- break;
- }
- case SMTP_EV_NO_PEER_CERTIFICATE: {
- ok = va_arg(alist, int*);
- mutt_message (_("SMTP_EV_NO_PEER_CERTIFICATE - accepted."));
- sleep(1);
- *ok = 1; break;
- }
- case SMTP_EV_WRONG_PEER_CERTIFICATE: {
- ok = va_arg(alist, int*);
- mutt_message (_("SMTP_EV_WRONG_PEER_CERTIFICATE - accepted."));
- sleep(1);
- *ok = 1; break;
- }
- case SMTP_EV_NO_CLIENT_CERTIFICATE: {
- ok = va_arg(alist, int*);
- mutt_message (_("SMTP_EV_NO_CLIENT_CERTIFICATE - accepted."));
- sleep(1);
- *ok = 1; break;
- }
- case SMTP_EV_EXTNA_DSN:
- extna ("DSN");
- break;
- case SMTP_EV_EXTNA_STARTTLS:
- extna ("StartTLS");
- break;
- case SMTP_EV_EXTNA_8BITMIME:
- extna ("8BITMIME");
- break;
- default:
- mutt_message(_("Got unhandled event ID = %d - ignored."), event_no);
- sleep(1);
- }
- va_end(alist);
-}
-
-static void do_dsn_notify (smtp_message_t message, const char* from) {
- int flags = Notify_NOTSET;
- smtp_recipient_t self = NULL;
-
- if (m_strisempty(MTransport.dsn_notify) || !message || m_strisempty(from) ||
- strstr (MTransport.dsn_notify, "never") != NULL)
- return;
-
- if (strstr (MTransport.dsn_notify, "failure") != NULL)
- flags |= Notify_FAILURE;
- if (strstr (MTransport.dsn_notify, "delay") != NULL)
- flags |= Notify_DELAY;
- if (strstr (MTransport.dsn_notify, "success") != NULL)
- flags |= Notify_SUCCESS;
-
- if (flags != Notify_NOTSET) {
- if (!(self = smtp_add_recipient (message, from)))
- return;
- smtp_dsn_set_notify (self, flags);
- }
-}
-
-static void do_dsn_ret (smtp_message_t message) {
- if (m_strisempty(MTransport.dsn_return) || !message)
- return;
- if (ascii_strncasecmp (MTransport.dsn_return, "hdrs", 4) == 0)
- smtp_dsn_set_ret (message, Ret_HDRS);
- else if (ascii_strncasecmp (MTransport.dsn_return, "full", 4) == 0)
- smtp_dsn_set_ret (message, Ret_FULL);
-}
-
-#ifdef USE_LIBESMTP
-int send_smtp_check_usetls (const char* option, unsigned long p,
- char* errbuf, ssize_t errlen) {
- char* val = (char*) p;
- if (m_strisempty(val))
- return (1);
- if (m_strncmp(val, "enabled", 7) != 0 &&
- m_strncmp(val, "required", 8) != 0) {
- if (errbuf)
- snprintf (errbuf, errlen, _("'%s' is invalid for %s"), val, option);
- return (0);
- }
- return (1);
-}
-#endif
-
-/*
- * send_smtp_invoke
- * Sends a mail message to the provided recipients using libesmtp.
- * Returns 0 upon success, -1 upon failure (and prints an error
- * message).
- */
-int send_smtp_invoke (address_t * from, /* the sender */
- address_t * to, address_t * cc, address_t * bcc, /* recips */
- const char *msg, /* file containing message */
- int eightbit)
-{ /* message contains 8bit chars */
- int ret = 0; /* return value, default = success */
- smtp_session_t session;
- smtp_message_t message;
- char *hostportstr = NULL;
- size_t hostportlen;
- FILE *fp = NULL;
- auth_context_t authctx = NULL;
- const smtp_status_t *status;
- char* envfrom = from->mailbox;
-
- _send_smtp_ensure_init ();
-
- if ((session = smtp_create_session ()) == NULL)
- SMTPFAIL ("smtp_create_session");
-
-#ifdef HAVE_GNUTLS_OPENSSL_H
- if (SmtpUseTLS != NULL && ascii_strncasecmp("enabled", SmtpUseTLS, 7) == 0) {
- smtp_starttls_enable(session, Starttls_ENABLED);
- } else if (SmtpUseTLS != NULL && ascii_strncasecmp("required", SmtpUseTLS, 8) == 0) {
- smtp_starttls_enable(session, Starttls_REQUIRED);
- }
-#endif
-
- /* Create hostname:port string and tell libesmtp */
- /* len = SmtpHost len + colon + max port (65536 => 5 chars) + terminator */
- hostportlen = m_strlen(SmtpHost) + 7;
- hostportstr = p_new(char, hostportlen);
- snprintf (hostportstr, hostportlen, "%s:%d", SmtpHost, SmtpPort);
- if (!smtp_set_server (session, hostportstr))
- SMTPFAIL ("smtp_set_server");
-
- if (SmtpAuthUser) {
- if ((authctx = auth_create_context ()) == NULL)
- MSGFAIL ("auth_create_context failed");
- auth_set_mechanism_flags (authctx, AUTH_PLUGIN_PLAIN, 0);
- auth_set_interact_cb (authctx, _send_smtp_auth_interact, NULL);
-
- if (!smtp_auth_set_context (session, authctx))
- SMTPFAIL ("smtp_auth_set_context");
- }
-
-#ifdef HAVE_GNUTLS_OPENSSL_H
- smtp_starttls_set_ctx (session, NULL);
-#endif
- smtp_set_eventcb (session, event_cb, NULL);
-
- if ((message = smtp_add_message (session)) == NULL)
- SMTPFAIL ("smtp_add_message");
-
- /* Initialize envelope sender */
- if (MTransport.use_envelope_from && MTransport.envelope_from_address)
- envfrom = MTransport.envelope_from_address->mailbox;
- if (!smtp_set_reverse_path (message, envfrom))
- SMTPFAIL ("smtp_set_reverse_path");
-
- /* set up DSN for message */
- do_dsn_notify (message, envfrom);
- do_dsn_ret (message);
-
- /* set up 8bitmime flag */
- if (eightbit && MTransport.use_8bitmime)
- smtp_8bitmime_set_body (message, E8bitmime_8BITMIME);
-
- if ((fp = fopen (msg, "r")) == NULL)
- LIBCFAIL ("fopen");
- if (!smtp_set_messagecb (message, _send_smtp_messagefp_cb, fp))
- SMTPFAIL ("smtp_set_messagecb");
- if (_send_smtp_add_recipients (message, to))
- FAIL ();
- if (_send_smtp_add_recipients (message, cc))
- FAIL ();
- if (_send_smtp_add_recipients (message, bcc))
- FAIL ();
- if (!smtp_start_session (session))
- SMTPFAIL ("smtp_start_session");
-
- status = smtp_message_transfer_status (message);
- if (status->code < 200 || status->code > 299) {
- char buf[256];
-
- snprintf (buf, sizeof (buf), "SMTP error while sending: %d %s",
- status->code, status->text);
- MSGFAIL (buf);
- }
-
-Done:
- m_fclose(&fp);
- if (hostportstr != NULL)
- p_delete(&hostportstr);
- if (session != NULL)
- smtp_destroy_session (session);
- if (authctx != NULL)
- auth_destroy_context (authctx);
-
- /* Forget user-entered SMTP AUTH password if send fails */
- if (ret != 0)
- authpass[0] = '\0';
-
- return ret;
-}
projects / apps / madmutt.git / commitdiff