static int starttls (void) { if (args_info.imap_flag) return imap_starttls (); if (args_info.smtp_flag) return smtp_starttls (); return 1; }
static gint smtp_session_recv_msg(Session *session, const gchar *msg) { SMTPSession *smtp_session = SMTP_SESSION(session); gboolean cont = FALSE; if (strlen(msg) < 4) { log_warning(_("bad SMTP response\n")); return -1; } switch (smtp_session->state) { case SMTP_EHLO: case SMTP_STARTTLS: case SMTP_AUTH: case SMTP_AUTH_PLAIN: case SMTP_AUTH_LOGIN_USER: case SMTP_AUTH_LOGIN_PASS: case SMTP_AUTH_CRAM_MD5: log_print("ESMTP< %s\n", msg); break; default: log_print("SMTP< %s\n", msg); break; } if (msg[0] == '5' && msg[1] == '0' && (msg[2] == '4' || msg[2] == '3' || msg[2] == '1')) { log_warning(_("error occurred on SMTP session\n")); smtp_session->state = SMTP_ERROR; smtp_session->error_val = SM_ERROR; g_free(smtp_session->error_msg); smtp_session->error_msg = g_strdup(msg); return -1; } if (!strncmp(msg, "535", 3)) { log_warning(_("error occurred on authentication\n")); smtp_session->state = SMTP_ERROR; smtp_session->error_val = SM_AUTHFAIL; g_free(smtp_session->error_msg); smtp_session->error_msg = g_strdup(msg); return -1; } if (msg[0] != '1' && msg[0] != '2' && msg[0] != '3') { log_warning(_("error occurred on SMTP session\n")); smtp_session->state = SMTP_ERROR; smtp_session->error_val = SM_ERROR; g_free(smtp_session->error_msg); smtp_session->error_msg = g_strdup(msg); return -1; } if (msg[3] == '-') cont = TRUE; else if (msg[3] != ' ' && msg[3] != '\0') { log_warning(_("bad SMTP response\n")); smtp_session->state = SMTP_ERROR; smtp_session->error_val = SM_UNRECOVERABLE; return -1; } /* ignore all multiline responses except for EHLO */ if (cont && smtp_session->state != SMTP_EHLO) return session_recv_msg(session); switch (smtp_session->state) { case SMTP_READY: if (strstr(msg, "ESMTP")) smtp_session->is_esmtp = TRUE; case SMTP_CONNECTED: #if USE_OPENSSL if (smtp_session->user || session->ssl_type != SSL_NONE || smtp_session->is_esmtp) #else if (smtp_session->user || smtp_session->is_esmtp) #endif smtp_ehlo(smtp_session); else smtp_helo(smtp_session); break; case SMTP_HELO: smtp_from(smtp_session); break; case SMTP_EHLO: smtp_ehlo_recv(smtp_session, msg); if (cont == TRUE) break; if (smtp_session->max_message_size > 0 && smtp_session->max_message_size < smtp_session->send_data_len) { log_warning(_("Message is too big " "(Maximum size is %s)\n"), to_human_readable( (off_t)(smtp_session->max_message_size))); smtp_session->state = SMTP_ERROR; smtp_session->error_val = SM_ERROR; return -1; } #if USE_OPENSSL if (session->ssl_type == SSL_STARTTLS && smtp_session->tls_init_done == FALSE) { smtp_starttls(smtp_session); break; } #endif if (smtp_session->user) { if (smtp_auth(smtp_session) != SM_OK) smtp_from(smtp_session); } else smtp_from(smtp_session); break; case SMTP_STARTTLS: #if USE_OPENSSL if (session_start_tls(session) < 0) { log_warning(_("can't start TLS session\n")); smtp_session->state = SMTP_ERROR; smtp_session->error_val = SM_ERROR; return -1; } smtp_session->tls_init_done = TRUE; smtp_ehlo(smtp_session); #endif break; case SMTP_AUTH: smtp_auth_recv(smtp_session, msg); break; case SMTP_AUTH_LOGIN_USER: smtp_auth_login_user_recv(smtp_session, msg); break; case SMTP_AUTH_PLAIN: case SMTP_AUTH_LOGIN_PASS: case SMTP_AUTH_CRAM_MD5: smtp_from(smtp_session); break; case SMTP_FROM: if (smtp_session->cur_to) smtp_rcpt(smtp_session); break; case SMTP_RCPT: if (smtp_session->cur_to) smtp_rcpt(smtp_session); else smtp_data(smtp_session); break; case SMTP_DATA: smtp_send_data(smtp_session); break; case SMTP_EOM: smtp_quit(smtp_session); break; case SMTP_QUIT: session_disconnect(session); break; case SMTP_ERROR: default: log_warning(_("error occurred on SMTP session\n")); smtp_session->error_val = SM_ERROR; return -1; } if (cont) return session_recv_msg(session); return 0; }