1035 lines
26 KiB
C
1035 lines
26 KiB
C
/*
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* Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
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* Copyright (C) 1999-2004 Hiroyuki Yamamoto
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <glib.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdarg.h>
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#include <ctype.h>
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#include <unistd.h>
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#include <time.h>
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#include <errno.h>
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#include "intl.h"
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#include "pop.h"
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#include "md5.h"
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#include "prefs_account.h"
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#include "utils.h"
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#include "recv.h"
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#include "partial_download.h"
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#include "log.h"
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#include "hooks.h"
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static gint pop3_greeting_recv (Pop3Session *session,
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const gchar *msg);
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static gint pop3_getauth_user_send (Pop3Session *session);
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static gint pop3_getauth_pass_send (Pop3Session *session);
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static gint pop3_getauth_apop_send (Pop3Session *session);
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#if USE_OPENSSL
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static gint pop3_stls_send (Pop3Session *session);
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static gint pop3_stls_recv (Pop3Session *session);
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#endif
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static gint pop3_getrange_stat_send (Pop3Session *session);
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static gint pop3_getrange_stat_recv (Pop3Session *session,
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const gchar *msg);
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static gint pop3_getrange_last_send (Pop3Session *session);
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static gint pop3_getrange_last_recv (Pop3Session *session,
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const gchar *msg);
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static gint pop3_getrange_uidl_send (Pop3Session *session);
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static gint pop3_getrange_uidl_recv (Pop3Session *session,
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const gchar *data,
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guint len);
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static gint pop3_getsize_list_send (Pop3Session *session);
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static gint pop3_getsize_list_recv (Pop3Session *session,
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const gchar *data,
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guint len);
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static gint pop3_retr_send (Pop3Session *session);
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static gint pop3_retr_recv (Pop3Session *session,
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const gchar *data,
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guint len);
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static gint pop3_delete_send (Pop3Session *session);
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static gint pop3_delete_recv (Pop3Session *session);
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static gint pop3_logout_send (Pop3Session *session);
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static void pop3_gen_send (Pop3Session *session,
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const gchar *format, ...);
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static void pop3_session_destroy (Session *session);
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static gint pop3_write_msg_to_file (const gchar *file,
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const gchar *data,
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guint len,
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const gchar *prefix);
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static Pop3State pop3_lookup_next (Pop3Session *session);
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static Pop3ErrorValue pop3_ok (Pop3Session *session,
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const gchar *msg);
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static gint pop3_session_recv_msg (Session *session,
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const gchar *msg);
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static gint pop3_session_recv_data_finished (Session *session,
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guchar *data,
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guint len);
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static gint pop3_greeting_recv(Pop3Session *session, const gchar *msg)
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{
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session->state = POP3_GREETING;
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session->greeting = g_strdup(msg);
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return PS_SUCCESS;
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}
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#if USE_OPENSSL
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static gint pop3_stls_send(Pop3Session *session)
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{
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session->state = POP3_STLS;
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pop3_gen_send(session, "STLS");
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return PS_SUCCESS;
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}
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static gint pop3_stls_recv(Pop3Session *session)
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{
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if (session_start_tls(SESSION(session)) < 0) {
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session->error_val = PS_SOCKET;
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return -1;
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}
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return PS_SUCCESS;
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}
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#endif /* USE_OPENSSL */
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static gint pop3_getauth_user_send(Pop3Session *session)
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{
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g_return_val_if_fail(session->user != NULL, -1);
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session->state = POP3_GETAUTH_USER;
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pop3_gen_send(session, "USER %s", session->user);
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return PS_SUCCESS;
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}
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static gint pop3_getauth_pass_send(Pop3Session *session)
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{
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g_return_val_if_fail(session->pass != NULL, -1);
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session->state = POP3_GETAUTH_PASS;
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pop3_gen_send(session, "PASS %s", session->pass);
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return PS_SUCCESS;
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}
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static gint pop3_getauth_apop_send(Pop3Session *session)
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{
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gchar *start, *end;
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gchar *apop_str;
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gchar md5sum[33];
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g_return_val_if_fail(session->user != NULL, -1);
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g_return_val_if_fail(session->pass != NULL, -1);
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session->state = POP3_GETAUTH_APOP;
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if ((start = strchr(session->greeting, '<')) == NULL) {
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log_error(_("Required APOP timestamp not found "
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"in greeting\n"));
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session->error_val = PS_PROTOCOL;
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return -1;
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}
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if ((end = strchr(start, '>')) == NULL || end == start + 1) {
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log_error(_("Timestamp syntax error in greeting\n"));
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session->error_val = PS_PROTOCOL;
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return -1;
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}
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*(end + 1) = '\0';
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apop_str = g_strconcat(start, session->pass, NULL);
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md5_hex_digest(md5sum, apop_str);
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g_free(apop_str);
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pop3_gen_send(session, "APOP %s %s", session->user, md5sum);
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return PS_SUCCESS;
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}
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static gint pop3_getrange_stat_send(Pop3Session *session)
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{
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session->state = POP3_GETRANGE_STAT;
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pop3_gen_send(session, "STAT");
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return PS_SUCCESS;
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}
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static gint pop3_getrange_stat_recv(Pop3Session *session, const gchar *msg)
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{
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if (sscanf(msg, "%d %d", &session->count, &session->total_bytes) != 2) {
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log_error(_("POP3 protocol error\n"));
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session->error_val = PS_PROTOCOL;
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return -1;
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} else {
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if (session->count == 0) {
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session->uidl_is_valid = TRUE;
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} else {
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session->msg = g_new0(Pop3MsgInfo, session->count + 1);
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session->cur_msg = 1;
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}
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}
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return PS_SUCCESS;
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}
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static gint pop3_getrange_last_send(Pop3Session *session)
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{
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session->state = POP3_GETRANGE_LAST;
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pop3_gen_send(session, "LAST");
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return PS_SUCCESS;
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}
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static gint pop3_getrange_last_recv(Pop3Session *session, const gchar *msg)
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{
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gint last;
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if (sscanf(msg, "%d", &last) == 0) {
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log_warning(_("POP3 protocol error\n"));
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session->error_val = PS_PROTOCOL;
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return -1;
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} else {
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if (session->count > last) {
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session->new_msg_exist = TRUE;
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session->cur_msg = last + 1;
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} else
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session->cur_msg = 0;
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}
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return PS_SUCCESS;
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}
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static gint pop3_getrange_uidl_send(Pop3Session *session)
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{
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session->state = POP3_GETRANGE_UIDL;
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pop3_gen_send(session, "UIDL");
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return PS_SUCCESS;
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}
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static gint pop3_getrange_uidl_recv(Pop3Session *session, const gchar *data,
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guint len)
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{
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gchar id[IDLEN + 1];
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gchar buf[POPBUFSIZE];
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gint buf_len;
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gint num;
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time_t recv_time;
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gint partial_recv;
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const gchar *p = data;
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const gchar *lastp = data + len;
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const gchar *newline;
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while (p < lastp) {
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if ((newline = memchr(p, '\r', lastp - p)) == NULL)
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return -1;
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buf_len = MIN(newline - p, sizeof(buf) - 1);
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memcpy(buf, p, buf_len);
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buf[buf_len] = '\0';
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p = newline + 1;
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if (p < lastp && *p == '\n') p++;
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if (sscanf(buf, "%d %" Xstr(IDLEN) "s", &num, id) != 2 ||
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num <= 0 || num > session->count) {
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log_warning(_("invalid UIDL response: %s\n"), buf);
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continue;
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}
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session->msg[num].uidl = g_strdup(id);
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recv_time = (time_t)g_hash_table_lookup(
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session->uidl_table, id);
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session->msg[num].recv_time = recv_time;
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partial_recv = (gint)g_hash_table_lookup(
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session->partial_recv_table, id);
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if ((!session->ac_prefs->getall && recv_time != RECV_TIME_NONE)
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|| partial_recv != POP3_TOTALLY_RECEIVED) {
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session->msg[num].received =
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(partial_recv != POP3_MUST_COMPLETE_RECV);
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session->msg[num].partial_recv = partial_recv;
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}
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if (!session->new_msg_exist &&
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(session->ac_prefs->getall || recv_time == RECV_TIME_NONE ||
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session->ac_prefs->rmmail)) {
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session->cur_msg = num;
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session->new_msg_exist = TRUE;
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}
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}
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session->uidl_is_valid = TRUE;
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return PS_SUCCESS;
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}
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static gint pop3_getsize_list_send(Pop3Session *session)
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{
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session->state = POP3_GETSIZE_LIST;
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pop3_gen_send(session, "LIST");
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return PS_SUCCESS;
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}
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static gint pop3_getsize_list_recv(Pop3Session *session, const gchar *data,
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guint len)
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{
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gchar buf[POPBUFSIZE];
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gint buf_len;
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guint num, size;
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const gchar *p = data;
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const gchar *lastp = data + len;
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const gchar *newline;
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while (p < lastp) {
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if ((newline = memchr(p, '\r', lastp - p)) == NULL)
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return -1;
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buf_len = MIN(newline - p, sizeof(buf) - 1);
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memcpy(buf, p, buf_len);
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buf[buf_len] = '\0';
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p = newline + 1;
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if (p < lastp && *p == '\n') p++;
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if (sscanf(buf, "%u %u", &num, &size) != 2) {
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session->error_val = PS_PROTOCOL;
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return -1;
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}
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if (num > 0 && num <= session->count)
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session->msg[num].size = size;
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if (num > 0 && num < session->cur_msg)
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session->cur_total_bytes += size;
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}
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return PS_SUCCESS;
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}
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static gint pop3_retr_send(Pop3Session *session)
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{
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session->state = POP3_RETR;
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pop3_gen_send(session, "RETR %d", session->cur_msg);
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return PS_SUCCESS;
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}
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static gint pop3_retr_recv(Pop3Session *session, const gchar *data, guint len)
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{
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gchar *file;
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gint drop_ok;
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MailReceiveData mail_receive_data;
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mail_receive_data.session = session;
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mail_receive_data.data = g_strndup(data, len);
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hooks_invoke(MAIL_RECEIVE_HOOKLIST, &mail_receive_data);
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file = get_tmp_file();
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if (pop3_write_msg_to_file(file, mail_receive_data.data,
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strlen(mail_receive_data.data), NULL) < 0) {
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g_free(file);
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g_free(mail_receive_data.data);
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session->error_val = PS_IOERR;
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return -1;
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}
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g_free(mail_receive_data.data);
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if (session->msg[session->cur_msg].partial_recv
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== POP3_MUST_COMPLETE_RECV) {
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gchar *old_file = partial_get_filename(
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session->ac_prefs->recv_server,
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session->ac_prefs->userid,
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session->msg[session->cur_msg].uidl);
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if (old_file) {
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partial_delete_old(old_file);
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g_free(old_file);
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}
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}
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/* drop_ok: 0: success 1: don't receive -1: error */
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drop_ok = session->drop_message(session, file);
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g_free(file);
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if (drop_ok < 0) {
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session->error_val = PS_IOERR;
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return -1;
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}
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session->cur_total_bytes += session->msg[session->cur_msg].size;
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session->cur_total_recv_bytes += session->msg[session->cur_msg].size;
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session->cur_total_num++;
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session->msg[session->cur_msg].received = TRUE;
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session->msg[session->cur_msg].partial_recv = POP3_TOTALLY_RECEIVED;
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session->msg[session->cur_msg].recv_time =
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drop_ok == 1 ? RECV_TIME_KEEP : session->current_time;
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return PS_SUCCESS;
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}
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static gint pop3_top_send(Pop3Session *session, gint max_size)
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{
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gint num_lines = (max_size*1024)/82; /* consider lines to be 80 chars */
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session->state = POP3_TOP;
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pop3_gen_send(session, "TOP %d %d", session->cur_msg, num_lines);
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return PS_SUCCESS;
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}
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static gint pop3_top_recv(Pop3Session *session, const gchar *data, guint len)
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{
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gchar *file;
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gint drop_ok;
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MailReceiveData mail_receive_data;
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gchar *partial_notice = NULL;
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mail_receive_data.session = session;
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mail_receive_data.data = g_strndup(data, len);
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hooks_invoke(MAIL_RECEIVE_HOOKLIST, &mail_receive_data);
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partial_notice = g_strdup_printf("SC-Marked-For-Download: 0\n"
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"SC-Partially-Retrieved: %s\n"
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"SC-Account-Server: %s\n"
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"SC-Account-Login: %s\n"
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"SC-Message-Size: %d",
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session->msg[session->cur_msg].uidl,
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session->ac_prefs->recv_server,
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session->ac_prefs->userid,
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session->msg[session->cur_msg].size);
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file = get_tmp_file();
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if (pop3_write_msg_to_file(file, mail_receive_data.data,
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strlen(mail_receive_data.data), partial_notice) < 0) {
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g_free(file);
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g_free(mail_receive_data.data);
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session->error_val = PS_IOERR;
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g_free(partial_notice);
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return -1;
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}
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g_free(mail_receive_data.data);
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g_free(partial_notice);
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/* drop_ok: 0: success 1: don't receive -1: error */
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drop_ok = session->drop_message(session, file);
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g_free(file);
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if (drop_ok < 0) {
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session->error_val = PS_IOERR;
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return -1;
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}
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session->cur_total_bytes += session->msg[session->cur_msg].size;
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session->cur_total_recv_bytes += session->msg[session->cur_msg].size;
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session->cur_total_num++;
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session->msg[session->cur_msg].received = TRUE;
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session->msg[session->cur_msg].partial_recv = POP3_PARTIALLY_RECEIVED;
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session->msg[session->cur_msg].recv_time =
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drop_ok == 1 ? RECV_TIME_KEEP : session->current_time;
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return PS_SUCCESS;
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}
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static gint pop3_delete_send(Pop3Session *session)
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{
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session->state = POP3_DELETE;
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pop3_gen_send(session, "DELE %d", session->cur_msg);
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return PS_SUCCESS;
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}
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static gint pop3_delete_recv(Pop3Session *session)
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{
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session->msg[session->cur_msg].deleted = TRUE;
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return PS_SUCCESS;
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}
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static gint pop3_logout_send(Pop3Session *session)
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{
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session->state = POP3_LOGOUT;
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pop3_gen_send(session, "QUIT");
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return PS_SUCCESS;
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}
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static void pop3_gen_send(Pop3Session *session, const gchar *format, ...)
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{
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gchar buf[POPBUFSIZE + 1];
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va_list args;
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va_start(args, format);
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g_vsnprintf(buf, sizeof(buf) - 2, format, args);
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va_end(args);
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if (!g_ascii_strncasecmp(buf, "PASS ", 5))
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log_print("POP3> PASS ********\n");
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else
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log_print("POP3> %s\n", buf);
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session_send_msg(SESSION(session), SESSION_MSG_NORMAL, buf);
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}
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Session *pop3_session_new(PrefsAccount *account)
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{
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Pop3Session *session;
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g_return_val_if_fail(account != NULL, NULL);
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session = g_new0(Pop3Session, 1);
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session_init(SESSION(session));
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SESSION(session)->type = SESSION_POP3;
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SESSION(session)->recv_msg = pop3_session_recv_msg;
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SESSION(session)->recv_data_finished = pop3_session_recv_data_finished;
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SESSION(session)->send_data_finished = NULL;
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|
|
SESSION(session)->destroy = pop3_session_destroy;
|
|
|
|
session->state = POP3_READY;
|
|
session->ac_prefs = account;
|
|
session->pop_before_smtp = FALSE;
|
|
pop3_get_uidl_table(account, session);
|
|
session->current_time = time(NULL);
|
|
session->error_val = PS_SUCCESS;
|
|
session->error_msg = NULL;
|
|
|
|
return SESSION(session);
|
|
}
|
|
|
|
static void pop3_session_destroy(Session *session)
|
|
{
|
|
Pop3Session *pop3_session = POP3_SESSION(session);
|
|
gint n;
|
|
|
|
g_return_if_fail(session != NULL);
|
|
|
|
for (n = 1; n <= pop3_session->count; n++)
|
|
g_free(pop3_session->msg[n].uidl);
|
|
g_free(pop3_session->msg);
|
|
|
|
if (pop3_session->uidl_table) {
|
|
hash_free_strings(pop3_session->uidl_table);
|
|
g_hash_table_destroy(pop3_session->uidl_table);
|
|
}
|
|
|
|
if (pop3_session->partial_recv_table) {
|
|
hash_free_strings(pop3_session->partial_recv_table);
|
|
g_hash_table_destroy(pop3_session->partial_recv_table);
|
|
}
|
|
|
|
g_free(pop3_session->greeting);
|
|
g_free(pop3_session->user);
|
|
g_free(pop3_session->pass);
|
|
g_free(pop3_session->error_msg);
|
|
}
|
|
|
|
void pop3_get_uidl_table(PrefsAccount *ac_prefs, Pop3Session *session)
|
|
{
|
|
GHashTable *table;
|
|
GHashTable *partial_recv_table;
|
|
gchar *path;
|
|
FILE *fp;
|
|
gchar buf[POPBUFSIZE];
|
|
gchar uidl[POPBUFSIZE];
|
|
time_t recv_time;
|
|
time_t now;
|
|
gint partial_recv;
|
|
|
|
table = g_hash_table_new(g_str_hash, g_str_equal);
|
|
partial_recv_table = g_hash_table_new(g_str_hash, g_str_equal);
|
|
|
|
path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
|
|
"uidl", G_DIR_SEPARATOR_S, ac_prefs->recv_server,
|
|
"-", ac_prefs->userid, NULL);
|
|
if ((fp = fopen(path, "rb")) == NULL) {
|
|
if (ENOENT != errno) FILE_OP_ERROR(path, "fopen");
|
|
g_free(path);
|
|
path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
|
|
"uidl-", ac_prefs->recv_server,
|
|
"-", ac_prefs->userid, NULL);
|
|
if ((fp = fopen(path, "rb")) == NULL) {
|
|
if (ENOENT != errno) FILE_OP_ERROR(path, "fopen");
|
|
g_free(path);
|
|
session->uidl_table = table;
|
|
session->partial_recv_table = partial_recv_table;
|
|
return;
|
|
}
|
|
}
|
|
g_free(path);
|
|
|
|
now = time(NULL);
|
|
|
|
while (fgets(buf, sizeof(buf), fp) != NULL) {
|
|
gchar tmp[POPBUFSIZE];
|
|
strretchomp(buf);
|
|
recv_time = RECV_TIME_NONE;
|
|
partial_recv = POP3_TOTALLY_RECEIVED;
|
|
|
|
if (sscanf(buf, "%s\t%ld\t%s", uidl, &recv_time, tmp) < 3) {
|
|
if (sscanf(buf, "%s\t%ld", uidl, &recv_time) != 2) {
|
|
if (sscanf(buf, "%s", uidl) != 1)
|
|
continue;
|
|
else {
|
|
recv_time = now;
|
|
strcpy(tmp, "0");
|
|
}
|
|
} else {
|
|
strcpy(tmp, "0");
|
|
}
|
|
}
|
|
|
|
if (recv_time == RECV_TIME_NONE)
|
|
recv_time = RECV_TIME_RECEIVED;
|
|
g_hash_table_insert(table, g_strdup(uidl),
|
|
GINT_TO_POINTER(recv_time));
|
|
if (strlen(tmp) == 1)
|
|
partial_recv = atoi(tmp); /* totally received ?*/
|
|
else
|
|
partial_recv = POP3_MUST_COMPLETE_RECV;
|
|
|
|
g_hash_table_insert(partial_recv_table, g_strdup(uidl),
|
|
GINT_TO_POINTER(partial_recv));
|
|
}
|
|
|
|
fclose(fp);
|
|
session->uidl_table = table;
|
|
session->partial_recv_table = partial_recv_table;
|
|
|
|
return;
|
|
}
|
|
|
|
gint pop3_write_uidl_list(Pop3Session *session)
|
|
{
|
|
gchar *path;
|
|
FILE *fp;
|
|
Pop3MsgInfo *msg;
|
|
gint n;
|
|
|
|
if (!session->uidl_is_valid) return 0;
|
|
|
|
path = g_strconcat(get_rc_dir(), G_DIR_SEPARATOR_S,
|
|
"uidl", G_DIR_SEPARATOR_S,
|
|
session->ac_prefs->recv_server,
|
|
"-", session->ac_prefs->userid, NULL);
|
|
if ((fp = fopen(path, "wb")) == NULL) {
|
|
FILE_OP_ERROR(path, "fopen");
|
|
g_free(path);
|
|
return -1;
|
|
}
|
|
|
|
for (n = 1; n <= session->count; n++) {
|
|
msg = &session->msg[n];
|
|
if (msg->uidl && msg->received && !msg->deleted) {
|
|
fprintf(fp, "%s\t%ld\t%d\n",
|
|
msg->uidl, msg->recv_time, msg->partial_recv);
|
|
}
|
|
}
|
|
|
|
if (fclose(fp) == EOF) FILE_OP_ERROR(path, "fclose");
|
|
g_free(path);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static gint pop3_write_msg_to_file(const gchar *file, const gchar *data,
|
|
guint len, const gchar *prefix)
|
|
{
|
|
FILE *fp;
|
|
const gchar *prev, *cur;
|
|
|
|
g_return_val_if_fail(file != NULL, -1);
|
|
|
|
if ((fp = fopen(file, "wb")) == NULL) {
|
|
FILE_OP_ERROR(file, "fopen");
|
|
return -1;
|
|
}
|
|
|
|
if (change_file_mode_rw(fp, file) < 0)
|
|
FILE_OP_ERROR(file, "chmod");
|
|
|
|
if (prefix != NULL) {
|
|
fprintf(fp, "%s", prefix);
|
|
fprintf(fp, "\n");
|
|
}
|
|
|
|
/* +------------------+----------------+--------------------------+ *
|
|
* ^data ^prev ^cur data+len-1^ */
|
|
|
|
prev = data;
|
|
while ((cur = memchr(prev, '\r', len - (prev - data))) != NULL) {
|
|
if ((cur > prev && fwrite(prev, cur - prev, 1, fp) < 1) ||
|
|
fputc('\n', fp) == EOF) {
|
|
FILE_OP_ERROR(file, "fwrite");
|
|
g_warning("can't write to file: %s\n", file);
|
|
fclose(fp);
|
|
unlink(file);
|
|
return -1;
|
|
}
|
|
|
|
if (cur == data + len - 1) {
|
|
prev = cur + 1;
|
|
break;
|
|
}
|
|
|
|
if (*(cur + 1) == '\n')
|
|
prev = cur + 2;
|
|
else
|
|
prev = cur + 1;
|
|
|
|
if (prev - data < len - 1 && *prev == '.' && *(prev + 1) == '.')
|
|
prev++;
|
|
|
|
if (prev - data >= len)
|
|
break;
|
|
}
|
|
|
|
if (prev - data < len &&
|
|
fwrite(prev, len - (prev - data), 1, fp) < 1) {
|
|
FILE_OP_ERROR(file, "fwrite");
|
|
g_warning("can't write to file: %s\n", file);
|
|
fclose(fp);
|
|
unlink(file);
|
|
return -1;
|
|
}
|
|
if (data[len - 1] != '\r' && data[len - 1] != '\n') {
|
|
if (fputc('\n', fp) == EOF) {
|
|
FILE_OP_ERROR(file, "fputc");
|
|
g_warning("can't write to file: %s\n", file);
|
|
fclose(fp);
|
|
unlink(file);
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
if (fclose(fp) == EOF) {
|
|
FILE_OP_ERROR(file, "fclose");
|
|
unlink(file);
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static Pop3State pop3_lookup_next(Pop3Session *session)
|
|
{
|
|
Pop3MsgInfo *msg;
|
|
PrefsAccount *ac = session->ac_prefs;
|
|
gint size;
|
|
gboolean size_limit_over;
|
|
|
|
for (;;) {
|
|
msg = &session->msg[session->cur_msg];
|
|
size = msg->size;
|
|
size_limit_over =
|
|
(ac->enable_size_limit &&
|
|
ac->size_limit > 0 &&
|
|
size > ac->size_limit * 1024);
|
|
|
|
if (ac->rmmail &&
|
|
msg->recv_time != RECV_TIME_NONE &&
|
|
msg->recv_time != RECV_TIME_KEEP &&
|
|
msg->partial_recv == POP3_TOTALLY_RECEIVED &&
|
|
session->current_time - msg->recv_time >=
|
|
ac->msg_leave_time * 24 * 60 * 60) {
|
|
log_message
|
|
(_("POP3: Deleting expired message "
|
|
"%d\n"), session->cur_msg);
|
|
pop3_delete_send(session);
|
|
return POP3_DELETE;
|
|
}
|
|
|
|
if (size_limit_over) {
|
|
if (!msg->received && msg->partial_recv !=
|
|
POP3_MUST_COMPLETE_RECV) {
|
|
pop3_top_send(session, ac->size_limit);
|
|
return POP3_TOP;
|
|
} else if (msg->partial_recv == POP3_MUST_COMPLETE_RECV)
|
|
break;
|
|
|
|
log_message
|
|
(_("POP3: Skipping message %d (%d bytes)\n"),
|
|
session->cur_msg, size);
|
|
}
|
|
|
|
if (size == 0 || msg->received || size_limit_over) {
|
|
session->cur_total_bytes += size;
|
|
if (session->cur_msg == session->count) {
|
|
pop3_logout_send(session);
|
|
return POP3_LOGOUT;
|
|
} else
|
|
session->cur_msg++;
|
|
} else
|
|
break;
|
|
}
|
|
|
|
pop3_retr_send(session);
|
|
return POP3_RETR;
|
|
}
|
|
|
|
static Pop3ErrorValue pop3_ok(Pop3Session *session, const gchar *msg)
|
|
{
|
|
Pop3ErrorValue ok;
|
|
|
|
log_print("POP3< %s\n", msg);
|
|
|
|
if (!strncmp(msg, "+OK", 3))
|
|
ok = PS_SUCCESS;
|
|
else if (!strncmp(msg, "-ERR", 4)) {
|
|
if (strstr(msg + 4, "lock") ||
|
|
strstr(msg + 4, "Lock") ||
|
|
strstr(msg + 4, "LOCK") ||
|
|
strstr(msg + 4, "wait")) {
|
|
log_error(_("mailbox is locked\n"));
|
|
ok = PS_LOCKBUSY;
|
|
} else if (strcasestr(msg + 4, "timeout")) {
|
|
log_error(_("Session timeout\n"));
|
|
ok = PS_ERROR;
|
|
} else {
|
|
switch (session->state) {
|
|
#if USE_OPENSSL
|
|
case POP3_STLS:
|
|
log_error(_("can't start TLS session\n"));
|
|
ok = PS_ERROR;
|
|
break;
|
|
#endif
|
|
case POP3_GETAUTH_USER:
|
|
case POP3_GETAUTH_PASS:
|
|
case POP3_GETAUTH_APOP:
|
|
log_error(_("error occurred on authentication\n"));
|
|
ok = PS_AUTHFAIL;
|
|
break;
|
|
case POP3_GETRANGE_LAST:
|
|
case POP3_GETRANGE_UIDL:
|
|
case POP3_TOP:
|
|
log_warning(_("command not supported\n"));
|
|
ok = PS_NOTSUPPORTED;
|
|
break;
|
|
|
|
default:
|
|
log_error(_("error occurred on POP3 session\n"));
|
|
ok = PS_ERROR;
|
|
}
|
|
}
|
|
|
|
g_free(session->error_msg);
|
|
session->error_msg = g_strdup(msg);
|
|
fprintf(stderr, "POP3: %s\n", msg);
|
|
} else
|
|
ok = PS_PROTOCOL;
|
|
|
|
session->error_val = ok;
|
|
return ok;
|
|
}
|
|
|
|
static gint pop3_session_recv_msg(Session *session, const gchar *msg)
|
|
{
|
|
Pop3Session *pop3_session = POP3_SESSION(session);
|
|
Pop3ErrorValue val = PS_SUCCESS;
|
|
const guchar *body;
|
|
|
|
body = msg;
|
|
if (pop3_session->state != POP3_GETRANGE_UIDL_RECV &&
|
|
pop3_session->state != POP3_GETSIZE_LIST_RECV) {
|
|
val = pop3_ok(pop3_session, msg);
|
|
if (val != PS_SUCCESS) {
|
|
if (val != PS_NOTSUPPORTED) {
|
|
pop3_session->state = POP3_ERROR;
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
if (*body == '+' || *body == '-')
|
|
body++;
|
|
while (isalpha(*body))
|
|
body++;
|
|
while (isspace(*body))
|
|
body++;
|
|
}
|
|
|
|
switch (pop3_session->state) {
|
|
case POP3_READY:
|
|
case POP3_GREETING:
|
|
pop3_greeting_recv(pop3_session, body);
|
|
#if USE_OPENSSL
|
|
if (pop3_session->ac_prefs->ssl_pop == SSL_STARTTLS)
|
|
pop3_stls_send(pop3_session);
|
|
else
|
|
#endif
|
|
if (pop3_session->ac_prefs->use_apop_auth)
|
|
pop3_getauth_apop_send(pop3_session);
|
|
else
|
|
pop3_getauth_user_send(pop3_session);
|
|
break;
|
|
#if USE_OPENSSL
|
|
case POP3_STLS:
|
|
if (pop3_stls_recv(pop3_session) != PS_SUCCESS)
|
|
return -1;
|
|
if (pop3_session->ac_prefs->use_apop_auth)
|
|
pop3_getauth_apop_send(pop3_session);
|
|
else
|
|
pop3_getauth_user_send(pop3_session);
|
|
break;
|
|
#endif
|
|
case POP3_GETAUTH_USER:
|
|
pop3_getauth_pass_send(pop3_session);
|
|
break;
|
|
case POP3_GETAUTH_PASS:
|
|
case POP3_GETAUTH_APOP:
|
|
if (!pop3_session->pop_before_smtp)
|
|
pop3_getrange_stat_send(pop3_session);
|
|
else
|
|
pop3_logout_send(pop3_session);
|
|
break;
|
|
case POP3_GETRANGE_STAT:
|
|
if (pop3_getrange_stat_recv(pop3_session, body) < 0)
|
|
return -1;
|
|
if (pop3_session->count > 0)
|
|
pop3_getrange_uidl_send(pop3_session);
|
|
else
|
|
pop3_logout_send(pop3_session);
|
|
break;
|
|
case POP3_GETRANGE_LAST:
|
|
if (val == PS_NOTSUPPORTED)
|
|
pop3_session->error_val = PS_SUCCESS;
|
|
else if (pop3_getrange_last_recv(pop3_session, body) < 0)
|
|
return -1;
|
|
if (pop3_session->cur_msg > 0)
|
|
pop3_getsize_list_send(pop3_session);
|
|
else
|
|
pop3_logout_send(pop3_session);
|
|
break;
|
|
case POP3_GETRANGE_UIDL:
|
|
if (val == PS_NOTSUPPORTED) {
|
|
pop3_session->error_val = PS_SUCCESS;
|
|
pop3_getrange_last_send(pop3_session);
|
|
} else {
|
|
pop3_session->state = POP3_GETRANGE_UIDL_RECV;
|
|
session_recv_data(session, 0, ".\r\n");
|
|
}
|
|
break;
|
|
case POP3_GETSIZE_LIST:
|
|
pop3_session->state = POP3_GETSIZE_LIST_RECV;
|
|
session_recv_data(session, 0, ".\r\n");
|
|
break;
|
|
case POP3_RETR:
|
|
pop3_session->state = POP3_RETR_RECV;
|
|
session_recv_data(session, 0, ".\r\n");
|
|
break;
|
|
case POP3_TOP:
|
|
if (val == PS_NOTSUPPORTED) {
|
|
pop3_session->error_val = PS_SUCCESS;
|
|
} else {
|
|
pop3_session->state = POP3_TOP_RECV;
|
|
session_recv_data(session, 0, ".\r\n");
|
|
}
|
|
break;
|
|
case POP3_DELETE:
|
|
pop3_delete_recv(pop3_session);
|
|
if (pop3_session->cur_msg == pop3_session->count)
|
|
pop3_logout_send(pop3_session);
|
|
else {
|
|
pop3_session->cur_msg++;
|
|
if (pop3_lookup_next(pop3_session) == POP3_ERROR)
|
|
return -1;
|
|
}
|
|
break;
|
|
case POP3_LOGOUT:
|
|
session_disconnect(session);
|
|
break;
|
|
case POP3_ERROR:
|
|
default:
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static gint pop3_session_recv_data_finished(Session *session, guchar *data,
|
|
guint len)
|
|
{
|
|
Pop3Session *pop3_session = POP3_SESSION(session);
|
|
Pop3ErrorValue val = PS_SUCCESS;
|
|
|
|
switch (pop3_session->state) {
|
|
case POP3_GETRANGE_UIDL_RECV:
|
|
val = pop3_getrange_uidl_recv(pop3_session, data, len);
|
|
if (val == PS_SUCCESS) {
|
|
if (pop3_session->new_msg_exist)
|
|
pop3_getsize_list_send(pop3_session);
|
|
else
|
|
pop3_logout_send(pop3_session);
|
|
} else
|
|
return -1;
|
|
break;
|
|
case POP3_GETSIZE_LIST_RECV:
|
|
val = pop3_getsize_list_recv(pop3_session, data, len);
|
|
if (val == PS_SUCCESS) {
|
|
if (pop3_lookup_next(pop3_session) == POP3_ERROR)
|
|
return -1;
|
|
} else
|
|
return -1;
|
|
break;
|
|
case POP3_RETR_RECV:
|
|
if (pop3_retr_recv(pop3_session, data, len) < 0)
|
|
return -1;
|
|
|
|
if (pop3_session->ac_prefs->rmmail &&
|
|
pop3_session->ac_prefs->msg_leave_time == 0 &&
|
|
pop3_session->msg[pop3_session->cur_msg].recv_time
|
|
!= RECV_TIME_KEEP)
|
|
pop3_delete_send(pop3_session);
|
|
else if (pop3_session->cur_msg == pop3_session->count)
|
|
pop3_logout_send(pop3_session);
|
|
else {
|
|
pop3_session->cur_msg++;
|
|
if (pop3_lookup_next(pop3_session) == POP3_ERROR)
|
|
return -1;
|
|
}
|
|
break;
|
|
case POP3_TOP_RECV:
|
|
if (pop3_top_recv(pop3_session, data, len) < 0)
|
|
return -1;
|
|
|
|
if (pop3_session->cur_msg == pop3_session->count)
|
|
pop3_logout_send(pop3_session);
|
|
else {
|
|
pop3_session->cur_msg++;
|
|
if (pop3_lookup_next(pop3_session) == POP3_ERROR)
|
|
return -1;
|
|
}
|
|
break;
|
|
case POP3_TOP:
|
|
log_warning(_("TOP command unsupported\n"));
|
|
if (pop3_session->cur_msg == pop3_session->count)
|
|
pop3_logout_send(pop3_session);
|
|
else {
|
|
pop3_session->cur_msg++;
|
|
if (pop3_lookup_next(pop3_session) == POP3_ERROR)
|
|
return -1;
|
|
}
|
|
break;
|
|
case POP3_ERROR:
|
|
default:
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|