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Add read_smb_send/recv, dumping keepalives

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This commit is contained in:
Volker Lendecke 2009-04-05 19:58:20 +02:00
parent 522bdea1f3
commit ad29104d3d
2 changed files with 92 additions and 0 deletions
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5
source3/include/proto.h
View File

@ -1420,6 +1420,11 @@ int create_pipe_sock(const char *socket_dir,
mode_t dir_perms);
const char *get_mydnsfullname(void);
bool is_myname_or_ipaddr(const char *s);
struct tevent_req *read_smb_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
int fd);
ssize_t read_smb_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
uint8_t **pbuf, int *perrno);
/* The following definitions come from lib/util_str.c */

87
source3/lib/util_sock.c
View File

@ -1965,3 +1965,90 @@ bool is_myname_or_ipaddr(const char *s)
/* No match */
return false;
}
/*
* Read an smb packet asynchronously, discard keepalives
*/
struct read_smb_state {
struct tevent_context *ev;
int fd;
uint8_t *buf;
};
static ssize_t read_smb_more(uint8_t *buf, size_t buflen, void *private_data);
static void read_smb_done(struct tevent_req *subreq);
struct tevent_req *read_smb_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
int fd)
{
struct tevent_req *result, *subreq;
struct read_smb_state *state;
result = tevent_req_create(mem_ctx, &state, struct read_smb_state);
if (result == NULL) {
return NULL;
}
state->ev = ev;
state->fd = fd;
subreq = read_packet_send(state, ev, fd, 4, read_smb_more, NULL);
if (subreq == NULL) {
goto fail;
}
tevent_req_set_callback(subreq, read_smb_done, result);
return result;
fail:
TALLOC_FREE(result);
return NULL;
}
static ssize_t read_smb_more(uint8_t *buf, size_t buflen, void *private_data)
{
if (buflen > 4) {
return 0; /* We've been here, we're done */
}
return smb_len_large(buf);
}
static void read_smb_done(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(
subreq, struct tevent_req);
struct read_smb_state *state = tevent_req_data(
req, struct read_smb_state);
ssize_t len;
int err;
len = read_packet_recv(subreq, state, &state->buf, &err);
TALLOC_FREE(subreq);
if (len == -1) {
tevent_req_error(req, err);
return;
}
if (CVAL(state->buf, 0) == SMBkeepalive) {
subreq = read_packet_send(state, state->ev, state->fd, 4,
read_smb_more, NULL);
if (tevent_req_nomem(subreq, req)) {
return;
}
tevent_req_set_callback(subreq, read_smb_done, req);
return;
}
tevent_req_done(req);
}
ssize_t read_smb_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
uint8_t **pbuf, int *perrno)
{
struct read_smb_state *state = tevent_req_data(
req, struct read_smb_state);
if (tevent_req_is_unix_error(req, perrno)) {
return -1;
}
*pbuf = talloc_move(mem_ctx, &state->buf);
return talloc_get_size(*pbuf);
}