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/*
* Unix SMB/CIFS implementation.
* SMB parameters and setup
* Copyright (C) Andrew Tridgell 1992-1998 Modified by Jeremy Allison 1995.
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include "replace.h"
#include "lib/util_file.h"
#include "lib/util/debug.h"
#include "lib/util/samba_util.h"
#include "lib/util/sys_rw.h"
#include "lib/util/sys_popen.h"
#include "lib/async_req/async_sock.h"
#include "lib/util/tevent_unix.h"
struct file_ploadv_state {
struct tevent_context *ev;
struct tevent_req *subreq;
size_t maxsize;
int fd;
uint8_t *buf;
};
static void file_ploadv_cleanup_fn(
struct tevent_req *req, enum tevent_req_state req_state);
static void file_ploadv_readable(struct tevent_req *subreq);
struct tevent_req *file_ploadv_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
char * const argl[], size_t maxsize)
{
struct tevent_req *req = NULL;
struct file_ploadv_state *state = NULL;
req = tevent_req_create(mem_ctx, &state, struct file_ploadv_state);
if (req == NULL) {
return NULL;
}
state->ev = ev;
state->maxsize = maxsize;
state->fd = sys_popenv(argl);
if (state->fd == -1) {
tevent_req_error(req, errno);
return tevent_req_post(req, ev);
}
tevent_req_set_cleanup_fn(req, file_ploadv_cleanup_fn);
state->subreq = wait_for_read_send(state, state->ev, state->fd, false);
if (tevent_req_nomem(state->subreq, req)) {
return tevent_req_post(req, ev);
}
tevent_req_set_callback(state->subreq, file_ploadv_readable, req);
return req;
}
static void file_ploadv_cleanup_fn(
struct tevent_req *req, enum tevent_req_state req_state)
{
struct file_ploadv_state *state = tevent_req_data(
req, struct file_ploadv_state);
TALLOC_FREE(state->subreq);
if (state->fd != -1) {
sys_pclose(state->fd);
state->fd = -1;
}
}
static void file_ploadv_readable(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(
subreq, struct tevent_req);
struct file_ploadv_state *state = tevent_req_data(
req, struct file_ploadv_state);
uint8_t buf[1024];
uint8_t *tmp;
ssize_t nread;
size_t bufsize;
int err;
bool ok;
ok = wait_for_read_recv(subreq, &err);
TALLOC_FREE(subreq);
state->subreq = NULL;
if (!ok) {
tevent_req_error(req, err);
return;
}
nread = sys_read(state->fd, buf, sizeof(buf));
if (nread == -1) {
tevent_req_error(req, errno);
return;
}
if (nread == 0) {
tevent_req_done(req);
return;
}
bufsize = talloc_get_size(state->buf);
if (bufsize > 0) {
/*
* Last round we've added the trailing '\0'. Remove it
* for this round.
*/
bufsize -= 1;
}
if (((bufsize + nread) < bufsize) ||
((bufsize + nread + 1) < bufsize)) {
/* overflow */
tevent_req_error(req, EMSGSIZE);
return;
}
if ((state->maxsize != 0) && ((bufsize + nread) > state->maxsize)) {
tevent_req_error(req, EMSGSIZE);
return;
}
tmp = talloc_realloc(state, state->buf, uint8_t, bufsize + nread + 1);
if (tevent_req_nomem(tmp, req)) {
return;
}
state->buf = tmp;
memcpy(state->buf + bufsize, buf, nread);
state->buf[bufsize+nread] = '\0';
state->subreq = wait_for_read_send(state, state->ev, state->fd, false);
if (tevent_req_nomem(state->subreq, req)) {
return;
}
tevent_req_set_callback(state->subreq, file_ploadv_readable, req);
}
int file_ploadv_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
uint8_t **buf)
{
struct file_ploadv_state *state = tevent_req_data(
req, struct file_ploadv_state);
int err;
if (tevent_req_is_unix_error(req, &err)) {
return err;
}
*buf = talloc_move(mem_ctx, &state->buf);
tevent_req_received(req);
return 0;
}
/**
Load a pipe into memory and return an array of pointers to lines in the data
must be freed with TALLOC_FREE.
**/
char **file_lines_ploadv(TALLOC_CTX *mem_ctx,
char * const argl[],
int *numlines)
{
char *p = NULL;
size_t size;
p = file_ploadv(argl, &size);
if (!p) {
return NULL;
}
return file_lines_parse(p, size, numlines, mem_ctx);
}
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