--- /dev/null
+/*
+ * 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(USE_SSL) || (defined(USE_GNUTLS) && 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 (USE_SSL) || (defined (USE_GNUTLS) && 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);
+}
+
+#if defined (USE_LIBESMTP) && (defined (USE_SSL) || defined (USE_GNUTLS))
+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");
+
+#if defined (USE_SSL) || (defined (USE_GNUTLS) && defined (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");
+ }
+
+#if defined (USE_SSL) || (defined (USE_GNUTLS) && defined (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