Desktop
/* $Id: pop3.c,v 1.11 2011/02/21 01:31:18 khorben Exp $ */
/* Copyright (c) 2011 Pierre Pronchery <khorben@defora.org> */
/* This file is part of DeforaOS Desktop Mailer */
/* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include <sys/socket.h>
#include <stdlib.h>
#ifdef DEBUG
# include <stdio.h>
#endif
#include <string.h>
#include <errno.h>
#include <netdb.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include "Mailer.h"
/* POP3 */
/* private */
/* types */
typedef struct _POP3
{
int fd;
guint source;
GIOChannel * channel;
char * rd_buf;
size_t rd_buf_cnt;
guint rd_source;
char * wr_buf;
size_t wr_buf_cnt;
guint wr_source;
AccountFolder inbox;
AccountFolder trash;
GtkTextBuffer * tbuf;
} POP3;
/* variables */
static char const _pop3_type[] = "POP3";
static char const _pop3_name[] = "POP3 server";
static AccountConfig _pop3_config[] =
{
{ "username", "Username", ACT_STRING, NULL },
{ "password", "Password", ACT_PASSWORD, NULL },
{ "hostname", "Server hostname", ACT_STRING, NULL },
{ "port", "Server port", ACT_UINT16, NULL },
{ "ssl", "Use SSL", ACT_BOOLEAN, NULL },
{ "delete", "Delete read mails on server",
ACT_BOOLEAN, NULL },
{ NULL, NULL, ACT_NONE, NULL }
};
static const AccountFolder _pop3_folder_inbox =
{
AFT_INBOX, "Inbox", NULL, NULL
};
static const AccountFolder _pop3_folder_trash =
{
AFT_TRASH, "Trash", NULL, NULL
};
/* prototypes */
static int _pop3_init(AccountPlugin * plugin, GtkTreeStore * store,
GtkTreeIter * parent, GtkTextBuffer * buffer);
static int _pop3_destroy(AccountPlugin * plugin);
static GtkTextBuffer * _pop3_select(AccountPlugin * plugin,
AccountFolder * folder, AccountMessage * message);
/* callbacks */
static gboolean _on_idle(gpointer data);
static gboolean _on_watch_can_read(GIOChannel * source, GIOCondition condition,
gpointer data);
static gboolean _on_watch_can_write(GIOChannel * source, GIOCondition condition,
gpointer data);
/* public */
/* variables */
AccountPlugin account_plugin =
{
NULL,
_pop3_type,
_pop3_name,
NULL,
_pop3_config,
_pop3_init,
_pop3_destroy,
_pop3_select,
NULL,
NULL
};
/* private */
/* functions */
/* pop3_init */
static int _pop3_init(AccountPlugin * plugin, GtkTreeStore * store,
GtkTreeIter * parent, GtkTextBuffer * buffer)
{
POP3 * pop3;
GdkPixbuf * pixbuf;
GtkTreeIter iter;
if((pop3 = malloc(sizeof(*pop3))) == NULL)
return -1;
plugin->priv = pop3;
pop3->fd = -1;
pop3->source = g_idle_add(_on_idle, plugin);
pop3->channel = NULL;
pop3->rd_buf = NULL;
pop3->rd_buf_cnt = 0;
pop3->rd_source = 0;
pop3->wr_buf = NULL;
pop3->wr_buf_cnt = 0;
pop3->wr_source = 0;
memcpy(&pop3->inbox, &_pop3_folder_inbox, sizeof(pop3->inbox));
memcpy(&pop3->trash, &_pop3_folder_trash, sizeof(pop3->trash));
pop3->tbuf = gtk_text_buffer_new(NULL);
/* inbox */
pixbuf = gtk_icon_theme_load_icon(plugin->helper->theme, "mailer-inbox",
16, 0, NULL);
gtk_tree_store_append(store, &iter, parent);
gtk_tree_store_set(store, &iter, MF_COL_ACCOUNT, NULL, MF_COL_FOLDER,
&pop3->inbox, MF_COL_ICON, pixbuf, MF_COL_NAME,
pop3->inbox.name, -1);
/* trash */
pixbuf = gtk_icon_theme_load_icon(plugin->helper->theme,
"stock_trash_full", 16, 0, NULL);
gtk_tree_store_append(store, &iter, parent);
gtk_tree_store_set(store, &iter, MF_COL_ACCOUNT, NULL, MF_COL_FOLDER,
&pop3->trash, MF_COL_ICON, pixbuf, MF_COL_NAME,
pop3->trash.name, -1);
return 0;
}
/* pop3_destroy */
static int _pop3_destroy(AccountPlugin * plugin)
{
POP3 * pop3 = plugin->priv;
GError * error = NULL;
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s()\n", __func__);
#endif
if(pop3 == NULL) /* XXX _pop3_destroy() may be called uninitialized */
return 0;
if(pop3->rd_source != 0)
g_source_remove(pop3->rd_source);
free(pop3->rd_buf);
if(pop3->wr_source != 0)
g_source_remove(pop3->wr_source);
free(pop3->wr_buf);
if(pop3->source != 0)
g_source_remove(pop3->source);
if(pop3->channel != NULL)
{
g_io_channel_shutdown(pop3->channel, TRUE, &error);
g_io_channel_unref(pop3->channel);
}
if(pop3->fd >= 0)
close(pop3->fd);
free(pop3);
return 0;
}
/* pop3_select */
static GtkTextBuffer * _pop3_select(AccountPlugin * plugin,
AccountFolder * folder, AccountMessage * message)
{
POP3 * pop3 = plugin->priv;
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s()\n", __func__);
#endif
return pop3->tbuf;
}
/* callbacks */
/* on_idle */
static gboolean _idle_connect(AccountPlugin * plugin);
static gboolean _idle_channel(AccountPlugin * plugin);
static gboolean _on_idle(gpointer data)
{
gboolean ret = FALSE;
AccountPlugin * plugin = data;
POP3 * pop3 = plugin->priv;
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s()\n", __func__);
#endif
if(pop3->fd < 0)
ret = _idle_connect(plugin);
else if(pop3->channel == NULL)
ret = _idle_channel(plugin);
if(ret == FALSE)
pop3->source = 0;
return ret;
}
static gboolean _idle_connect(AccountPlugin * plugin)
{
POP3 * pop3 = plugin->priv;
char const * p;
struct hostent * he;
unsigned short port;
struct sockaddr_in sa;
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s()\n", __func__);
#endif
/* FIXME report errors */
if((p = plugin->config[2].value) == NULL)
return FALSE;
if((he = gethostbyname(p)) == NULL)
{
plugin->helper->error(NULL, hstrerror(h_errno), 1);
return FALSE;
}
if((p = plugin->config[3].value) == NULL)
return FALSE;
port = (unsigned long)p;
if((pop3->fd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
{
plugin->helper->error(NULL, strerror(errno), 1);
return FALSE;
}
sa.sin_family = AF_INET;
sa.sin_port = htons(port);
sa.sin_addr.s_addr = *((uint32_t*)he->h_addr_list[0]);
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s() connecting to %s:%u\n", __func__,
inet_ntoa(sa.sin_addr), port);
#endif
if(connect(pop3->fd, (struct sockaddr *)&sa, sizeof(sa)) != 0)
{
plugin->helper->error(NULL, strerror(errno), 1);
close(pop3->fd);
pop3->fd = -1;
return FALSE;
}
return TRUE;
}
static gboolean _idle_channel(AccountPlugin * plugin)
{
POP3 * pop3 = plugin->priv;
GError * error = NULL;
pop3->channel = g_io_channel_unix_new(pop3->fd);
g_io_channel_set_encoding(pop3->channel, NULL, &error);
g_io_channel_set_buffered(pop3->channel, FALSE);
pop3->rd_source = g_io_add_watch(pop3->channel, G_IO_IN,
_on_watch_can_read, plugin);
return TRUE;
}
/* on_watch_can_read */
static gboolean _on_watch_can_read(GIOChannel * source, GIOCondition condition,
gpointer data)
{
AccountPlugin * plugin = data;
POP3 * pop3 = plugin->priv;
char * p;
gsize cnt = 0;
GError * error = NULL;
GIOStatus status;
if(condition != G_IO_IN || source != pop3->channel)
return FALSE; /* should not happen */
if((p = realloc(pop3->rd_buf, pop3->rd_buf_cnt + 256)) == NULL)
return TRUE; /* XXX retries immediately (delay?) */
pop3->rd_buf = p;
status = g_io_channel_read_chars(source,
&pop3->rd_buf[pop3->rd_buf_cnt], 256, &cnt, &error);
#ifdef DEBUG
fprintf(stderr, "%s", "DEBUG: POP3 SERVER: ");
fwrite(&pop3->rd_buf[pop3->rd_buf_cnt], sizeof(*p), cnt, stderr);
#endif
pop3->rd_buf_cnt += cnt;
switch(status)
{
case G_IO_STATUS_NORMAL:
break;
case G_IO_STATUS_ERROR:
plugin->helper->error(NULL, error->message, 1);
case G_IO_STATUS_EOF:
default: /* XXX find a way to recover */
pop3->rd_source = 0;
return FALSE;
}
/* FIXME implement the rest */
return TRUE;
}
/* on_watch_can_write */
static gboolean _on_watch_can_write(GIOChannel * source, GIOCondition condition,
gpointer data)
{
AccountPlugin * plugin = data;
POP3 * pop3 = plugin->priv;
/* FIXME implement */
pop3->wr_source = 0;
return FALSE;
}