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imap.c
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imap.c
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/***************************************************************************
SimpleMail - Copyright (C) 2000 Hynek Schlawack and Sebastian Bauer
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; either version 2 of the License, or
(at your option) any later version.
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, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
***************************************************************************/
/**
*
* @brief Provides IMAP4 support.
*
* Functions in this file are responsible for the communication with IMAP4 servers.
*
* @file imap.c
*/
#include "imap.h"
#include <ctype.h>
#include <dirent.h> /* unix dir stuff */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "account.h"
#include "codesets.h"
#include "debug.h"
#include "folder.h"
#include "imap_helper.h"
#include "logging.h"
#include "mail.h"
#include "progmon.h"
#include "qsort.h"
#include "smintl.h"
#include "support_indep.h"
#include "tcp.h"
#include "request.h"
#include "subthreads.h"
#include "support.h"
#include "tcpip.h"
#ifdef _AMIGA
#undef printf
#endif
#define MIN(a,b) ((a)<(b)?(a):(b))
/**
* Maximum number of mails that can be hold before a refresh is invoked
*/
#define MAX_MAILS_PER_REFRESH 100
/**
* Set the local mail array entry for the given entry.
*
* @param local_mail_array
* @param i
* @param fn
* @return whether the mail is scheduled to be deleted or not.
*/
static int set_local_mail_array_entry(struct local_mail *local_mail_array, int i, const char *fn)
{
int todel = mail_is_marked_as_deleted_by_filename(fn);
if (fn[0] == 'u' || fn[0] == 'U' || todel)
{
local_mail_array[i].uid = atoi(fn + 1);
local_mail_array[i].todel = todel;
} else
{
local_mail_array[i].uid = 0;
local_mail_array[i].todel = 0;
}
return todel;
}
/**
* Returns the local mail array of a given folder. 0 for failure (does not
* change the contents of the ptrs in that case). Free the array with free()
* as soon as no longer needed. The mail array is sorted according to the uid
* field.
*
* @param folder
* @param local_mail_array_ptr
* @param num_of_mails_ptr
* @param num_of_todel_mails_ptr
* @return 0 on failure, otherwise something different.
*/
static int get_local_mail_array(struct folder *folder, struct local_mail **local_mail_array_ptr, unsigned int *num_of_mails_ptr, unsigned int *num_of_todel_mails_ptr)
{
struct local_mail *local_mail_array;
unsigned int num_of_mails = 0, num_of_todel_mails = 0;
unsigned int i;
int success = 0;
/* Will house the names of mails in case there was no index of the folder loaded */
struct string_list filename_list;
int use_filename_list = 0;
char logg_buf[80];
SM_ENTER;
string_list_init(&filename_list);
folder_lock(folder);
if (!folder->mail_infos_loaded)
{
/* No mail infos have been loaded, as we only need the filenames
* we just scan the directory rather than issuing a full rescan.
*/
DIR *dfd;
struct dirent *dptr;
SM_DEBUGF(10, ("Scanning folder \"%s\" for mails\n", folder->path));
if (!(dfd = opendir(folder->path)))
{
sm_snprintf(logg_buf, sizeof(logg_buf), _("Couldn't get mails of locally saved IMAP folder \"%s\""), folder->name);
SM_LOG_TEXT(ERROR, logg_buf);
goto bailout;
}
use_filename_list = 1;
while ((dptr = readdir(dfd)) != NULL)
{
char *name = dptr->d_name;
if (!folder_is_filename_mail(name))
continue;
string_list_insert_tail(&filename_list, name);
num_of_mails++;
}
closedir(dfd);
} else
{
num_of_mails = folder->num_mails;
}
num_of_todel_mails = 0;
SM_DEBUGF(10, ("%d mails in folder\n", num_of_mails));
if ((local_mail_array = (struct local_mail *)malloc(sizeof(*local_mail_array) * num_of_mails)))
{
if (use_filename_list)
{
struct string_node *sn;
i = 0;
sn = string_list_first(&filename_list);
while (sn)
{
const char *fn = sn->string;
num_of_todel_mails += set_local_mail_array_entry(local_mail_array, i, fn);
sn = string_node_next(sn);
i++;
}
string_list_clear(&filename_list);
} else
{
/* fill in the uids of the mails */
for (i=0;i < num_of_mails;i++)
{
const char *fn = folder->mail_info_array[i]?folder->mail_info_array[i]->filename:"";
num_of_todel_mails += set_local_mail_array_entry(local_mail_array, i, fn);
}
}
/* now sort them */
#define local_mail_lt(a,b) ((a->uid < b->uid)?1:0)
QSORT(struct local_mail, local_mail_array, num_of_mails, local_mail_lt);
success = 1;
*local_mail_array_ptr = local_mail_array;
*num_of_mails_ptr = num_of_mails;
*num_of_todel_mails_ptr = num_of_todel_mails;
}
bailout:
folder_unlock(folder);
sm_snprintf(logg_buf, sizeof(logg_buf), "Folder \"%s\" has %ld local mails, %d are scheduled for deletion", folder->name, num_of_mails, num_of_todel_mails);
logg(INFO, 0, __FILE__, NULL, 0, logg_buf, LAST);
SM_DEBUGF(20, ("num_of_mails=%d, num_of_todel_mails=%d\n", num_of_mails, num_of_todel_mails));
SM_RETURN(success,"%d");
return success;
}
struct imap_delete_orphan_messages_args
{
struct local_mail *local_mail_array;
int num_of_local_mails;
struct remote_mail *remote_mail_array;
int num_remote_mails;
struct imap_server *imap_server;
char *imap_folder;
/** Callback that is invoked for each local uid that is not present in the remote mailbox */
void (*delete_mail_by_uid)(char *user, char *server, char *path, unsigned int uid);
};
/**
* Delete local mails that are not listed in the remote mail array (aka orphaned messages).
*
* @param options
*/
static void imap_delete_orphan_messages(struct imap_delete_orphan_messages_args *options)
{
int i,j;
struct local_mail *local_mail_array = options->local_mail_array;
int num_of_local_mails = options->num_of_local_mails;
struct remote_mail *remote_mail_array = options->remote_mail_array;
int num_remote_mails = options->num_remote_mails;
struct imap_server *imap_server = options->imap_server;
char *imap_folder = options->imap_folder;
SM_ENTER;
SM_DEBUGF(20,("num_of_local_mails=%d, num_remote_mails=%d\n", num_of_local_mails, num_remote_mails));
i = j = 0;
while (i<num_of_local_mails && j<num_remote_mails)
{
unsigned int local_uid = local_mail_array[i].uid;
unsigned int remote_uid = remote_mail_array[j].uid;
if (local_uid < remote_uid)
{
if (local_uid) options->delete_mail_by_uid(imap_server->login,imap_server->name,imap_folder,local_uid);
i++;
}
else if (local_uid > remote_uid) j++;
else
{
i++;
/* FIXME: If local mail list would not (possibly) contain ties, we
* could increment j as well */
}
}
/* Delete the rest */
for (;i<num_of_local_mails;i++)
{
unsigned int local_uid = local_mail_array[i].uid;
if (local_uid) options->delete_mail_by_uid(imap_server->login,imap_server->name,imap_folder,local_uid);
}
SM_LEAVE;
}
/**
* Synchronize the folder.
*
* @param conn
* @param server
* @param imap_path
* @param callbacks
* @return 1 on success, 0 for failure.
*/
static int imap_synchonize_folder(struct connection *conn, struct imap_server *server, char *imap_path, struct imap_synchronize_callbacks *callbacks)
{
struct folder *folder;
int success = 0;
SM_DEBUGF(10,("Synchronizing folder \"%s\"\n",imap_path));
folders_lock();
if ((folder = folder_find_by_imap(server->login,server->name, imap_path)))
{
unsigned int num_of_local_mails;
unsigned int num_of_todel_local_mails;
struct local_mail *local_mail_array;
char path[380];
/* Get the local mails */
if (!get_local_mail_array(folder, &local_mail_array, &num_of_local_mails, &num_of_todel_local_mails))
{
folders_unlock();
return 0;
}
/* Change the current directory to the to be synchronized folder */
folder_lock(folder);
getcwd(path, sizeof(path));
if (chdir(folder->path) == -1)
{
free(local_mail_array);
folder_unlock(folder);
folders_unlock();
return 0;
}
folder_unlock(folder);
folders_unlock();
if (local_mail_array)
{
struct remote_mailbox *rm;
/* get number of remote mails */
char *line;
char tag[20];
char send[200];
char buf[100];
char status_buf[200];
struct imap_get_remote_mails_args args = {0};
args.conn = conn;
args.path = folder->imap_path;
args.set_status = callbacks->set_status;
args.set_status_static = callbacks->set_status_static;
if (num_of_todel_local_mails)
{
args.writemode = 1;
if ((rm = imap_get_remote_mails(&args)))
{
struct remote_mail *remote_mail_array;
unsigned int num_of_remote_mails;
unsigned int i,j;
remote_mail_array = rm->remote_mail_array;
num_of_remote_mails = rm->num_of_remote_mail;
sm_snprintf(status_buf,sizeof(status_buf),_("Removing %d mails from server"),num_of_todel_local_mails);
callbacks->set_status(status_buf);
for (i = 0 ; i < num_of_local_mails; i++)
{
if (mail_is_marked_as_deleted(folder->mail_info_array[i]))
{
for (j = 0; j < num_of_remote_mails; j++)
{
if (local_mail_array[i].uid == remote_mail_array[j].uid)
{
sprintf(tag,"%04x",imap_val++);
sprintf(send,"%s STORE %d +FLAGS.SILENT (\\Deleted)\r\n",tag,j+1);
tcp_write(conn,send,strlen(send));
tcp_flush(conn);
success = 0;
while ((line = tcp_readln(conn)))
{
line = imap_get_result(line,buf,sizeof(buf));
if (!mystricmp(buf,tag))
{
line = imap_get_result(line,buf,sizeof(buf));
if (!mystricmp(buf,"OK"))
success = 1;
break;
}
}
if (!success) break;
}
}
}
}
if (success)
{
sprintf(tag,"%04x",imap_val++);
sprintf(send,"%s EXPUNGE\r\n",tag);
tcp_write(conn,send,strlen(send));
tcp_flush(conn);
success = 0;
while ((line = tcp_readln(conn)))
{
line = imap_get_result(line,buf,sizeof(buf));
if (!mystricmp(buf,tag))
{
line = imap_get_result(line,buf,sizeof(buf));
if (!mystricmp(buf,"OK"))
success = 1;
break;
}
}
}
imap_free_remote_mailbox(rm);
}
}
args.writemode = 0;
/* Get information of all mails within the folder */
if ((rm = imap_get_remote_mails(&args)))
{
unsigned int i,j;
unsigned int max_todl_bytes = 0;
unsigned int accu_todl_bytes = 0; /* this represents the exact todl bytes according to the RFC822.SIZE */
unsigned int todl_bytes = 0;
unsigned int num_msgs_to_dl = 0; /* number of mails that we really want to download */
struct remote_mail *remote_mail_array;
unsigned int num_of_remote_mails;
remote_mail_array = rm->remote_mail_array;
num_of_remote_mails = rm->num_of_remote_mail;
if (!server->keep_orphans)
{
struct imap_delete_orphan_messages_args args = {0};
args.local_mail_array = local_mail_array;
args.num_of_local_mails = num_of_local_mails;
args.remote_mail_array = remote_mail_array;
args.num_remote_mails = num_of_remote_mails;
args.imap_server = server;
args.imap_folder = imap_path;
args.delete_mail_by_uid = callbacks->delete_mail_by_uid;
imap_delete_orphan_messages(&args);
}
/* Determine the number of bytes and mails which we are going to download
* Note that the contents of remote mail is partly destroyed. When we are
* ready, the top of the remote array contains the uids (as uids), the sizes
* (as size), and the indices (in field flags) that we want to download.
* The number of mails is kept in num_msgs_to_dl.
*/
i=j=0;
while (i<num_of_remote_mails)
{
if (j < num_of_local_mails)
{
unsigned int remote_uid = remote_mail_array[i].uid;
unsigned int local_uid = local_mail_array[j].uid;
if (remote_uid >= local_uid)
{
/* Definitely skip local mail */
j++;
/* Skip also remote, if it matches the local uid (thus, the mail was present) */
if (remote_uid == local_uid)
i++;
continue;
}
}
max_todl_bytes += remote_mail_array[i].size;
/* Note that num_msgs_to_dl <= i. Also note that harm will be done
* if num_msgs_to_dl == i. */
remote_mail_array[num_msgs_to_dl].uid = remote_mail_array[i].uid;
remote_mail_array[num_msgs_to_dl].size = remote_mail_array[i].size;
remote_mail_array[num_msgs_to_dl].flags = i;
num_msgs_to_dl++;
i++;
}
/* Assume everything is fine */
success = 1;
callbacks->init_gauge_as_bytes(max_todl_bytes);
for (i=0;i<num_msgs_to_dl;i++)
{
accu_todl_bytes += remote_mail_array[i].size;
sm_snprintf(status_buf,sizeof(status_buf),_("Fetching mail %d from server"),remote_mail_array[i].flags + 1);
callbacks->set_status(status_buf);
sprintf(tag,"%04x",imap_val++);
sprintf(send,"%s FETCH %d RFC822\r\n",tag,remote_mail_array[i].flags+1); /* We could also use the UID command */
tcp_write(conn,send,strlen(send));
tcp_flush(conn);
success = 0;
while ((line = tcp_readln(conn)))
{
line = imap_get_result(line,buf,sizeof(buf));
if (!mystricmp(buf,tag))
{
line = imap_get_result(line,buf,sizeof(buf));
if (!mystricmp(buf,"OK"))
success = 1;
break;
} else
{
char msgno_buf[200];
char *temp_ptr;
unsigned int todownload;
/* We only handle untagged lines here */
if (buf[0] != '*')
continue;
line++;
line = imap_get_result(line,msgno_buf,sizeof(msgno_buf));
/*atoi(msgno_buf);*/ /* ignored */
/* skip the fetch command */
line = imap_get_result(line,msgno_buf,sizeof(msgno_buf));
if ((temp_ptr = strchr(line,'{'))) /* } - avoid bracket checking problems */
{
temp_ptr++;
todownload = (unsigned int)atoi(temp_ptr);
} else todownload = 0;
if (todownload)
{
FILE *fh;
char filename_buf[32];
sprintf(filename_buf,"u%d",remote_mail_array[i].uid); /* u means unchanged */
if ((fh = fopen(filename_buf,"w")))
{
while (todownload)
{
char buf[204];
int dl;
dl = tcp_read(conn,buf,MIN((sizeof(buf)-4),todownload));
if (dl == -1 || !dl) break;
todl_bytes = MIN(accu_todl_bytes,todl_bytes + dl);
callbacks->set_gauge(todl_bytes);
fwrite(buf,1,dl,fh);
todownload -= dl;
}
fclose(fh);
callbacks->new_mail_arrived(filename_buf, server->login, server->name, imap_path);
}
}
}
}
if (!success) break;
todl_bytes = accu_todl_bytes;
callbacks->set_gauge(todl_bytes);
}
imap_free_remote_mailbox(rm);
}
}
chdir(path);
free(local_mail_array);
} else folders_unlock();
return success;
}
/*****************************************************************************/
/**
* Synchronize a single imap account.
*
* @param imap_server
* @param options
* @return 0 for failure, 1 for success.
* @note 0 currently means abort.
*/
static int imap_synchronize_really_single(struct imap_server *server, struct imap_synchronize_callbacks *callbacks)
{
struct connection *conn;
struct imap_connect_and_login_to_server_callbacks login_callbacks = {0};
char head_buf[100];
SM_DEBUGF(10,("Synchronizing with server \"%s\"\n",server->name));
sm_snprintf(head_buf,sizeof(head_buf),_("Synchronizing mails with %s"),server->name);
callbacks->set_head(head_buf);
if (server->title)
callbacks->set_title_utf8(server->title);
else
callbacks->set_title(server->name);
callbacks->set_connect_to_server(server->name);
login_callbacks.request_login = callbacks->request_login;
login_callbacks.set_status = callbacks->set_status;
if (imap_really_connect_and_login_to_server(&conn, server, &login_callbacks))
{
struct remote_folder *rf = NULL;
int num_rf;
callbacks->set_status_static(_("Login successful"));
callbacks->set_status_static(_("Checking for folders"));
SM_DEBUGF(10,("Get folders\n"));
if ((rf = imap_get_folders(conn,0,&num_rf)))
{
int i;
/* add the folders */
for (i = 0; i < num_rf; i++)
{
callbacks->add_imap_folder(server->login, server->name, rf[i].name, rf[i].delim);
}
callbacks->refresh_folders();
/* sync the folders */
for (i = 0; i < num_rf; i++)
{
if (!(imap_synchonize_folder(conn, server, rf[i].name, callbacks)))
{
sm_snprintf(head_buf,sizeof(head_buf),_("Failed to sync folder \"%s\""), rf[i].name);
callbacks->set_status(head_buf);
break;
}
}
}
tcp_disconnect(conn);
}
if (thread_aborted()) return 0;
/* We handle only the abort case as failure for now */
return 1;
}
/*****************************************************************************/
void imap_synchronize_really(struct imap_synchronize_options *options)
{
struct imap_synchronize_callbacks *callbacks = &options->callbacks;
struct imap_server *server;
SM_ENTER;
if (!open_socket_lib())
{
tell_from_subtask(N_("Cannot open the bsdsocket.library!"));
goto out;
}
server = (struct imap_server*)list_first(options->imap_list);
while (server)
{
if (!imap_synchronize_really_single(server, callbacks))
break;
server = (struct imap_server*)node_next(&server->node);
}
close_socket_lib();
out:
SM_LEAVE;
}
/*****************************************************************************/
int imap_get_folder_list_really(struct imap_get_folder_list_options *options,
struct remote_folder **all_folders_out, int *num_all_folders_out,
struct remote_folder **sub_folders_out, int *num_sub_folders_out)
{
struct imap_get_folder_list_callbacks *callbacks = &options->callbacks;
struct connection *conn = NULL;
struct connect_options conn_opts = {0};
struct string_list *all_folder_list = NULL;
struct string_list *sub_folder_list = NULL;
char head_buf[100];
int error_code;
int rc = 0;
struct imap_server *server = options->server;
if (!open_socket_lib())
return 0;
sm_snprintf(head_buf, sizeof(head_buf), _("Reading folders of %s"),server->name);
callbacks->set_head(head_buf);
if (server->title)
callbacks->set_title_utf8(server->title);
else
callbacks->set_title(server->name);
callbacks->set_connect_to_server(server->name);
conn_opts.use_ssl = server->ssl;
conn_opts.fingerprint = server->fingerprint;
if (!(conn = tcp_connect(server->name, server->port, &conn_opts, &error_code)))
goto bailout;
callbacks->set_status_static(_("Waiting for login..."));
if (!imap_wait_login(conn,server))
goto bailout;
callbacks->set_status_static(_("Login..."));
if (!imap_login(conn,server))
{
callbacks->set_status_static(_("Login failed!"));
tell_from_subtask(N_("Authentication failed!"));
goto bailout;
}
callbacks->set_status_static(_("Reading folders..."));
if (!(*all_folders_out = imap_get_folders(conn, 1, num_all_folders_out)))
goto bailout;
if (!(*sub_folders_out = imap_get_folders(conn, 0, num_sub_folders_out)))
goto bailout;
rc = 1;
bailout:
if (!rc)
{
string_list_free(sub_folder_list);
string_list_free(all_folder_list);
}
if (conn) tcp_disconnect(conn);
close_socket_lib();
return rc;
}
/*****************************************************************************/
void imap_submit_folder_list_really(struct imap_submit_folder_options *options)
{
struct imap_server *server = options->server;
struct string_list *list = options->list;
struct imap_submit_folder_list_callbacks *callbacks = &options->callbacks;
struct connection *conn;
struct connect_options conn_opts = {0};
char head_buf[100];
int error_code;
struct remote_folder *all_folders = NULL;
struct remote_folder *sub_folders = NULL;
int i, num_all_folders = 0, num_sub_folders = 0;
char *line;
char tag[20];
char send[200];
char buf[100];
struct string_node *node;
if (!open_socket_lib())
return;
sm_snprintf(head_buf,sizeof(head_buf),_("Submitting subscribed folders to %s"),server->name);
callbacks->set_head(head_buf);
if (server->title)
callbacks->set_title_utf8(server->title);
else
callbacks->set_title(server->name);
callbacks->set_connect_to_server(server->name);
conn_opts.use_ssl = server->ssl;
conn_opts.fingerprint = server->fingerprint;
if (!(conn = tcp_connect(server->name, server->port, &conn_opts, &error_code)))
goto out;
callbacks->set_status_static(_("Waiting for login..."));
if (!imap_wait_login(conn,server))
goto out;
callbacks->set_status_static(_("Login..."));
if (!imap_login(conn,server))
goto out;
callbacks->set_status_static(_("Reading folders..."));
if (!(all_folders = imap_get_folders(conn, 1, &num_all_folders)))
goto out;
callbacks->set_status_static(_("Reading subscribed folders..."));
if (!(sub_folders = imap_get_folders(conn, 0, &num_sub_folders)))
goto out;
for (node = string_list_first(list); node; node = string_node_next(node))
{
if (!imap_remote_folder_exists(sub_folders, num_sub_folders, node->string))
{
char *path = utf8toiutf7(node->string,strlen(node->string));
if (path)
{
/* subscribe this folder */
sprintf(tag,"%04x",imap_val++);
sprintf(send,"%s SUBSCRIBE \"%s\"\r\n",tag,path);
tcp_write(conn,send,strlen(send));
tcp_flush(conn);
while ((line = tcp_readln(conn)))
{
char *saved_line = line; /* for debugging reasons */
line = imap_get_result(line,buf,sizeof(buf));
if (!mystricmp(buf,tag))
{
line = imap_get_result(line,buf,sizeof(buf));
if (mystricmp(buf,"OK"))
{
/* If it is not OK it is a failure */
SM_DEBUGF(20,("%s",send));
SM_DEBUGF(20,("%s",saved_line));
tell_from_subtask(_("Subscribing folders failed!"));
}
break;
}
}
}
free(path);
}
}
/* Unsubscribe from all folders that are not listed in the given list */
for (i = 0; i < num_sub_folders; i++)
{
if (!string_list_find(list, sub_folders[i].name))
{
char *path = utf8toiutf7(node->string,strlen(node->string));
if (path)
{
/* Unsubscribe this folder */
sprintf(tag,"%04x",imap_val++);
sprintf(send,"%s UNSUBSCRIBE \"%s\"\r\n",tag,path);
tcp_write(conn,send,strlen(send));
tcp_flush(conn);
while ((line = tcp_readln(conn)))
{
line = imap_get_result(line,buf,sizeof(buf));
if (!mystricmp(buf,tag))
{
line = imap_get_result(line,buf,sizeof(buf));
if (mystricmp(buf,"OK"))
{
/* If it is not OK , it's a failure */
tell_from_subtask(_("Unsubscribing folders failed!"));
}
break;
}
}
free(path);
}
}
}
out:
imap_folders_free(all_folders, num_all_folders);
imap_folders_free(sub_folders, num_sub_folders);
tcp_disconnect(conn);
close_socket_lib();
}
/*****************************************************************************/
int imap_really_connect_and_login_to_server(struct connection **connection, struct imap_server *imap_server, struct imap_connect_and_login_to_server_callbacks *callbacks)
{
int success = 0;
char status_buf[160];
struct connect_options conn_opts = {0};
int error_code;
struct connection *imap_connection = NULL;
SM_ENTER;
if (!imap_server)
goto bailout;
if (imap_server->ask)
{
char *password = (char*)malloc(512);
char *login = (char*)malloc(512);
if (password && login)
{
if (imap_server->login) mystrlcpy(login,imap_server->login,512);
password[0] = 0;
if (callbacks->request_login(imap_server->name,login,password,512))
{
imap_server->login = mystrdup(login);
imap_server->passwd = mystrdup(password);
} else
{
free(password);
free(login);
SM_RETURN(0,"%ld");
return 0;
}
}
free(password);
free(login);
}
/* Display "Connecting" - status message */
sm_snprintf(status_buf,sizeof(status_buf),"%s: %s",imap_server->name, _("Connecting..."));
callbacks->set_status(status_buf);
conn_opts.use_ssl = imap_server->ssl;
conn_opts.fingerprint = imap_server->fingerprint;
if ((imap_connection = tcp_connect(imap_server->name, imap_server->port, &conn_opts, &error_code)))
{
SM_DEBUGF(20,("Connected to %s\n",imap_server->name));
if (imap_wait_login(imap_connection,imap_server))
{
/* Display "Logging in" - status message */
sm_snprintf(status_buf,sizeof(status_buf),"%s: %s",imap_server->name, _("Logging in..."));
callbacks->set_status(status_buf);
if (imap_login(imap_connection,imap_server))
{
/* Display "Connected" - status message */
sm_snprintf(status_buf,sizeof(status_buf),"%s: %s",imap_server->name, _("Connected"));
callbacks->set_status(status_buf);
success = 1;
} else
{
SM_DEBUGF(10,("Login failed\n"));
sm_snprintf(status_buf,sizeof(status_buf),"%s: %s",imap_server->name, _("Log in failed. Check user name and password for this account."));
callbacks->set_status(status_buf);
tcp_disconnect(imap_connection);
imap_connection = NULL;
tell_from_subtask(N_("Authentication failed!"));
}
} else
{
sm_snprintf(status_buf,sizeof(status_buf),"%s: %s",imap_server->name, _("Unexpected server answer. Connection failed."));
callbacks->set_status(status_buf);
tcp_disconnect(imap_connection);
imap_connection = NULL;
}
} else
{
/* Display "Failed to connect" - status message */
sm_snprintf(status_buf,sizeof(status_buf),"%s: %s",imap_server->name, _("Connecting to the server failed"));
callbacks->set_status(status_buf);
}
bailout:
*connection = imap_connection;
SM_RETURN(success,"%ld");
return success;
}
/*****************************************************************************/
int imap_really_download_mails(struct connection *imap_connection, struct imap_download_mails_options *options)
{
struct folder *local_folder;
struct remote_mailbox *rm;
int do_download = 1;
int downloaded_mails = 0;
int dont_use_uids = options->uid_options.imap_dont_use_uids;
unsigned int local_uid_validiy = options->uid_options.imap_uid_validity;
unsigned int local_uid_next = options->uid_options.imap_uid_next;
unsigned int uid_from = 0;
unsigned int uid_to = 0;
char *imap_local_path = options->imap_local_path;
struct imap_server *imap_server = options->imap_server;
char *imap_folder = options->imap_folder;
struct imap_download_mails_callbacks *callbacks = &options->callbacks;
struct progmon *pm;
SM_ENTER;
if (!imap_connection)
{
SM_RETURN(-1,"%d");
return -1;
}
SM_DEBUGF(10,("Downloading mails of folder \"%s\"\n",imap_folder));
/* Determine uid values from folder if this shall not be skipped and if
* the uids are not known.
*/
if (!dont_use_uids && !local_uid_next)
{
folders_lock();
if ((local_folder = folder_find_by_imap(imap_server->login, imap_server->name, imap_folder)))
{
local_uid_validiy = local_folder->imap_uid_validity;
local_uid_next = local_folder->imap_uid_next;
dont_use_uids = local_folder->imap_dont_use_uids;
}
folders_unlock();
}