static void dcc_resume_rec(DCC_REC *dcc)
{
char *str;
g_return_if_fail(dcc != NULL);
dcc->get_type = DCC_GET_RESUME;
dcc->file = dcc_get_download_path(dcc->arg);
dcc->fhandle = open(dcc->file, O_WRONLY, dcc_file_create_mode);
if (dcc->fhandle == -1) {
signal_emit("dcc error file not found", 2, dcc, dcc->file);
dcc_destroy(dcc);
return;
}
dcc->transfd = lseek(dcc->fhandle, 0, SEEK_END);
if (dcc->transfd < 0) dcc->transfd = 0;
dcc->skipped = dcc->transfd;
str = g_strdup_printf("DCC RESUME %s %d %lu",
dcc->arg, dcc->port, dcc->transfd);
dcc_ctcp_message(dcc->nick, dcc->server, dcc->chat, FALSE, str);
g_free(str);
}
/* Resume a DCC GET */
static void dcc_send_resume(GET_DCC_REC *dcc)
{
char *str;
g_return_if_fail(dcc != NULL);
dcc->file = dcc_get_download_path(dcc->arg);
dcc->fhandle = open(dcc->file, O_WRONLY);
if (dcc->fhandle == -1) {
signal_emit("dcc error file not found", 2, dcc, dcc->file);
return;
}
dcc->get_type = DCC_GET_RESUME;
dcc->transfd = lseek(dcc->fhandle, 0, SEEK_END);
if (dcc->transfd < 0) dcc->transfd = 0;
dcc->skipped = dcc->transfd;
if (dcc->skipped == dcc->size) {
/* already received whole file */
dcc->starttime = time(NULL);
dcc_reject(DCC(dcc), NULL);
} else {
str = g_strdup_printf(dcc->file_quoted ?
"DCC RESUME \"%s\" %d %lu" :
"DCC RESUME %s %d %lu",
dcc->arg, dcc->port, dcc->transfd);
dcc_ctcp_message(dcc->server, dcc->nick,
dcc->chat, FALSE, str);
g_free(str);
}
}
/* Resume a DCC GET */
static void dcc_send_resume(GET_DCC_REC *dcc)
{
off_t pos;
char *str;
g_return_if_fail(dcc != NULL);
dcc->file = dcc_get_download_path(dcc->arg);
dcc->fhandle = open(dcc->file, O_WRONLY);
if (dcc->fhandle == -1) {
signal_emit("dcc error file open", 3, dcc->nick, dcc->file,
GINT_TO_POINTER(errno));
return;
}
dcc->get_type = DCC_GET_RESUME;
pos = lseek(dcc->fhandle, 0, SEEK_END);
dcc->transfd = pos == (off_t)-1 ? 0 : (unsigned long) pos;
dcc->skipped = dcc->transfd;
if (dcc->skipped == dcc->size) {
/* already received whole file */
dcc->starttime = time(NULL);
dcc_reject(DCC(dcc), NULL);
} else {
str = g_strdup_printf(dcc->file_quoted ?
"DCC RESUME \"%s\" %d %lu" :
"DCC RESUME %s %d %lu",
dcc->arg, dcc->port, dcc->transfd);
dcc_ctcp_message(dcc->server, dcc->nick,
dcc->chat, FALSE, str);
g_free(str);
}
}
static void sig_dcc_request(GET_DCC_REC *dcc, const char *nickaddr)
{
struct stat statbuf;
const char *masks;
char *str, *file, *esc_arg;
int max_size;
if (!IS_DCC_GET(dcc)) return;
/* check if we want to autoget file offer */
if (!settings_get_bool("dcc_autoget"))
return;
/* check for lowports */
if (dcc->port < 1024 && !settings_get_bool("dcc_autoaccept_lowports"))
return;
/* check that autoget masks match */
masks = settings_get_str("dcc_autoget_masks");
if (*masks != '\0' &&
!masks_match(SERVER(dcc->server), masks, dcc->nick, nickaddr))
return;
/* Unless specifically said in dcc_autoget_masks, don't do autogets
sent to channels. */
if (*masks == '\0' && dcc->target != NULL && server_ischannel(SERVER(dcc->server), dcc->target))
return;
/* don't autoget files beginning with a dot, if download dir is
our home dir (stupid kludge for stupid people) */
if (*dcc->arg == '.' &&
g_strcmp0(settings_get_str("dcc_download_path"), "~") == 0)
return;
/* check file size limit, NOTE: it's still possible to send a
bogus file size and then just send what ever sized file.. */
max_size = settings_get_size("dcc_autoget_max_size");
if (max_size > 0 && (uoff_t)max_size < dcc->size)
return;
/* ok. but do we want/need to resume? */
file = dcc_get_download_path(dcc->arg);
esc_arg = escape_string(dcc->arg);
str = g_strdup_printf(settings_get_bool("dcc_autoresume") &&
stat(file, &statbuf) == 0 ?
"RESUME %s \"%s\"" : "GET %s \"%s\"",
dcc->nick, esc_arg);
signal_emit("command dcc", 2, str, dcc->server);
g_free(esc_arg);
g_free(file);
g_free(str);
}
/* callback: net_connect() finished for DCC GET */
static void sig_dccget_connected(DCC_REC *dcc)
{
struct stat statbuf;
char *fname;
g_return_if_fail(dcc != NULL);
if (net_geterror(dcc->handle) != 0) {
/* error connecting */
signal_emit("dcc error connect", 1, dcc);
dcc_destroy(dcc);
return;
}
g_source_remove(dcc->tagconn);
g_free_not_null(dcc->file);
dcc->file = dcc_get_download_path(dcc->arg);
/* if some plugin wants to change the file name/path here.. */
signal_emit("dcc get receive", 1, dcc);
if (stat(dcc->file, &statbuf) == 0 && dcc->get_type == DCC_GET_RENAME) {
/* file exists, rename.. */
fname = get_rename_file(dcc->file);
g_free(dcc->file);
dcc->file = fname;
}
if (dcc->get_type != DCC_GET_RESUME) {
dcc->fhandle = open(dcc->file, O_WRONLY | O_TRUNC | O_CREAT, dcc_file_create_mode);
if (dcc->fhandle == -1) {
signal_emit("dcc error file create", 2, dcc, dcc->file);
dcc_destroy(dcc);
return;
}
}
dcc->databufsize = settings_get_int("dcc_block_size");
if (dcc->databufsize <= 0) dcc->databufsize = 2048;
dcc->databuf = g_malloc(dcc->databufsize);
dcc->starttime = time(NULL);
dcc->tagread = g_input_add(dcc->handle, G_INPUT_READ,
(GInputFunction) sig_dccget_receive, dcc);
signal_emit("dcc connected", 1, dcc);
}
/* callback: net_connect() finished for DCC GET */
void sig_dccget_connected(GET_DCC_REC *dcc)
{
struct stat statbuf;
char *fname, *tempfname, *str;
int ret, ret_errno, temphandle, old_umask;
if (!dcc->from_dccserver) {
if (net_geterror(dcc->handle) != 0) {
/* error connecting */
signal_emit("dcc error connect", 1, dcc);
dcc_destroy(DCC(dcc));
return;
}
g_source_remove(dcc->tagconn);
dcc->tagconn = -1;
}
g_free_not_null(dcc->file);
dcc->file = dcc_get_download_path(dcc->arg);
/* if some plugin wants to change the file name/path here.. */
signal_emit("dcc get receive", 1, dcc);
if (stat(dcc->file, &statbuf) == 0 &&
dcc->get_type == DCC_GET_RENAME) {
/* file exists, rename.. */
fname = dcc_get_rename_file(dcc->file);
g_free(dcc->file);
dcc->file = fname;
}
if (dcc->get_type != DCC_GET_RESUME) {
int dcc_file_create_mode = octal2dec(settings_get_int("dcc_file_create_mode"));
/* we want to overwrite the file, remove it here.
if it gets created after this, we'll fail. */
unlink(dcc->file);
/* just to make sure we won't run into race conditions
if download_path is in some global temp directory */
tempfname = g_strconcat(dcc->file, ".XXXXXX", NULL);
old_umask = umask(0077);
temphandle = mkstemp(tempfname);
umask(old_umask);
if (temphandle == -1)
ret = -1;
else
ret = fchmod(temphandle, dcc_file_create_mode);
close(temphandle);
if (ret != -1) {
ret = link(tempfname, dcc->file);
if (ret == -1 &&
/* Linux */
(errno == EPERM ||
/* FUSE */
errno == ENOSYS ||
/* BSD */
errno == EOPNOTSUPP)) {
/* hard links aren't supported - some people
want to download stuff to FAT/NTFS/etc
partitions, so fallback to rename() */
ret = rename(tempfname, dcc->file);
}
}
/* if ret = 0, we're the file owner now */
dcc->fhandle = ret == -1 ? -1 :
open(dcc->file, O_WRONLY | O_TRUNC);
/* close/remove the temp file */
ret_errno = errno;
unlink(tempfname);
g_free(tempfname);
if (dcc->fhandle == -1) {
signal_emit("dcc error file create", 3,
dcc, dcc->file, g_strerror(ret_errno));
dcc_destroy(DCC(dcc));
return;
}
}
dcc->starttime = time(NULL);
if (dcc->size == 0) {
dcc_close(DCC(dcc));
return;
}
dcc->tagread = g_input_add(dcc->handle, G_INPUT_READ,
(GInputFunction) sig_dccget_receive, dcc);
signal_emit("dcc connected", 1, dcc);
if (dcc->from_dccserver) {
str = g_strdup_printf("121 %s %d\n",
dcc->server ? dcc->server->nick : "??", 0);
net_transmit(dcc->handle, str, strlen(str));
}
}