fetchIO *
fetchXGetFile(struct url *u, struct url_stat *us, const char *flags)
{
char *path;
fetchIO *f;
struct url_stat local_us;
int if_modified_since, fd, *cookie;
if_modified_since = CHECK_FLAG('i');
if (if_modified_since && us == NULL)
us = &local_us;
if ((path = fetchUnquotePath(u)) == NULL) {
fetch_syserr();
return NULL;
}
fd = open(path, O_RDONLY);
free(path);
if (fd == -1) {
fetch_syserr();
return NULL;
}
if (us && fetch_stat_file(fd, us) == -1) {
close(fd);
fetch_syserr();
return NULL;
}
if (if_modified_since && u->last_modified > 0 &&
u->last_modified >= us->mtime) {
close(fd);
fetchLastErrCode = FETCH_UNCHANGED;
snprintf(fetchLastErrString, MAXERRSTRING, "Unchanged");
return NULL;
}
if (u->offset && lseek(fd, u->offset, SEEK_SET) == -1) {
close(fd);
fetch_syserr();
return NULL;
}
cookie = malloc(sizeof(int));
if (cookie == NULL) {
close(fd);
fetch_syserr();
return NULL;
}
*cookie = fd;
f = fetchIO_unopen(cookie, fetchFile_read, fetchFile_write, fetchFile_close);
if (f == NULL) {
close(fd);
free(cookie);
}
return f;
}
fetchIO *
fetchPutFile(struct url *u, const char *flags)
{
char *path;
fetchIO *f;
int fd, *cookie;
if ((path = fetchUnquotePath(u)) == NULL) {
fetch_syserr();
return NULL;
}
if (CHECK_FLAG('a'))
fd = open(path, O_WRONLY | O_APPEND);
else
fd = open(path, O_WRONLY);
free(path);
if (fd == -1) {
fetch_syserr();
return NULL;
}
if (u->offset && lseek(fd, u->offset, SEEK_SET) == -1) {
close(fd);
fetch_syserr();
return NULL;
}
cookie = malloc(sizeof(int));
if (cookie == NULL) {
close(fd);
fetch_syserr();
return NULL;
}
*cookie = fd;
f = fetchIO_unopen(cookie, fetchFile_read, fetchFile_write, fetchFile_close);
if (f == NULL) {
close(fd);
free(cookie);
}
return f;
}
static fetchIO *
ftp_setup(conn_t *cconn, conn_t *dconn, int mode)
{
struct ftpio *io;
fetchIO *f;
if (cconn == NULL || dconn == NULL)
return (NULL);
if ((io = malloc(sizeof(*io))) == NULL)
return (NULL);
io->cconn = cconn;
io->dconn = dconn;
io->dir = mode;
io->eof = io->err = 0;
f = fetchIO_unopen(io, ftp_readfn, ftp_writefn, ftp_closefn);
if (f == NULL)
free(io);
return (f);
}