diff options
author | Volker Lendecke <vl@samba.org> | 2010-12-22 15:15:47 +0100 |
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committer | Karolin Seeger <kseeger@samba.org> | 2010-12-26 22:14:27 +0100 |
commit | 02c4649674d3bd0f54e71910f11d6aff2cdb6c9d (patch) | |
tree | 6f13d3310f5d3775423fd045f7f706bc1c14a7ec | |
parent | 56c760ab41b9b4cb9680d873b8f9955be21434f4 (diff) | |
download | samba-02c4649674d3bd0f54e71910f11d6aff2cdb6c9d.tar.gz |
v3-4-test: Pull in read_smb_send from master
-rw-r--r-- | source3/libsmb/async_smb.c | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/source3/libsmb/async_smb.c b/source3/libsmb/async_smb.c index 0336ff226c8..17a8ca401fd 100644 --- a/source3/libsmb/async_smb.c +++ b/source3/libsmb/async_smb.c @@ -22,6 +22,93 @@ static void cli_state_handler(struct event_context *event_ctx, struct fd_event *event, uint16 flags, void *p); +/* + * 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); + +static 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); +} + +static 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); +} + /** * Fetch an error out of a NBT packet * @param[in] buf The SMB packet |