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-rw-r--r--lib/vssh/libssh.c202
1 files changed, 105 insertions, 97 deletions
diff --git a/lib/vssh/libssh.c b/lib/vssh/libssh.c
index 74cbfe6e9..70e0ded5e 100644
--- a/lib/vssh/libssh.c
+++ b/lib/vssh/libssh.c
@@ -107,34 +107,37 @@
#endif
/* Local functions: */
-static CURLcode myssh_connect(struct connectdata *conn, bool *done);
-static CURLcode myssh_multi_statemach(struct connectdata *conn,
+static CURLcode myssh_connect(struct Curl_easy *data, bool *done);
+static CURLcode myssh_multi_statemach(struct Curl_easy *data,
bool *done);
-static CURLcode myssh_do_it(struct connectdata *conn, bool *done);
+static CURLcode myssh_do_it(struct Curl_easy *data, bool *done);
-static CURLcode scp_done(struct connectdata *conn,
+static CURLcode scp_done(struct Curl_easy *data,
CURLcode, bool premature);
-static CURLcode scp_doing(struct connectdata *conn, bool *dophase_done);
-static CURLcode scp_disconnect(struct connectdata *conn,
+static CURLcode scp_doing(struct Curl_easy *data, bool *dophase_done);
+static CURLcode scp_disconnect(struct Curl_easy *data,
+ struct connectdata *conn,
bool dead_connection);
-static CURLcode sftp_done(struct connectdata *conn,
+static CURLcode sftp_done(struct Curl_easy *data,
CURLcode, bool premature);
-static CURLcode sftp_doing(struct connectdata *conn,
+static CURLcode sftp_doing(struct Curl_easy *data,
bool *dophase_done);
-static CURLcode sftp_disconnect(struct connectdata *conn, bool dead);
+static CURLcode sftp_disconnect(struct Curl_easy *data,
+ struct connectdata *conn,
+ bool dead);
static
-CURLcode sftp_perform(struct connectdata *conn,
+CURLcode sftp_perform(struct Curl_easy *data,
bool *connected,
bool *dophase_done);
static void sftp_quote(struct connectdata *conn);
static void sftp_quote_stat(struct connectdata *conn);
-static int myssh_getsock(struct connectdata *conn, curl_socket_t *sock);
-static int myssh_perform_getsock(const struct connectdata *conn,
- curl_socket_t *sock);
+static int myssh_getsock(struct Curl_easy *data,
+ struct connectdata *conn, curl_socket_t *sock);
-static CURLcode myssh_setup_connection(struct connectdata *conn);
+static CURLcode myssh_setup_connection(struct Curl_easy *data,
+ struct connectdata *conn);
/*
* SCP protocol handler.
@@ -152,7 +155,7 @@ const struct Curl_handler Curl_handler_scp = {
myssh_getsock, /* proto_getsock */
myssh_getsock, /* doing_getsock */
ZERO_NULL, /* domore_getsock */
- myssh_perform_getsock, /* perform_getsock */
+ myssh_getsock, /* perform_getsock */
scp_disconnect, /* disconnect */
ZERO_NULL, /* readwrite */
ZERO_NULL, /* connection_check */
@@ -178,7 +181,7 @@ const struct Curl_handler Curl_handler_sftp = {
myssh_getsock, /* proto_getsock */
myssh_getsock, /* doing_getsock */
ZERO_NULL, /* domore_getsock */
- myssh_perform_getsock, /* perform_getsock */
+ myssh_getsock, /* perform_getsock */
sftp_disconnect, /* disconnect */
ZERO_NULL, /* readwrite */
ZERO_NULL, /* connection_check */
@@ -660,10 +663,10 @@ restart:
* to will be set to TRUE if the libssh function returns SSH_AGAIN
* meaning it wants to be called again when the socket is ready
*/
-static CURLcode myssh_statemach_act(struct connectdata *conn, bool *block)
+static CURLcode myssh_statemach_act(struct Curl_easy *data, bool *block)
{
CURLcode result = CURLE_OK;
- struct Curl_easy *data = conn->data;
+ struct connectdata *conn = data->conn;
struct SSHPROTO *protop = data->req.p.ssh;
struct ssh_conn *sshc = &conn->proto.sshc;
curl_socket_t sock = conn->sock[FIRSTSOCKET];
@@ -950,7 +953,7 @@ static CURLcode myssh_statemach_act(struct connectdata *conn, bool *block)
if(sshc->homedir == NULL) {
MOVE_TO_ERROR_STATE(CURLE_COULDNT_CONNECT);
}
- conn->data->state.most_recent_ftp_entrypath = sshc->homedir;
+ data->state.most_recent_ftp_entrypath = sshc->homedir;
/* This is the last step in the SFTP connect phase. Do note that while
we get the homedir here, we get the "workingpath" in the DO action
@@ -1150,7 +1153,7 @@ static CURLcode myssh_statemach_act(struct connectdata *conn, bool *block)
break;
}
- result = Curl_client_write(conn, CLIENTWRITE_HEADER, tmp, strlen(tmp));
+ result = Curl_client_write(data, CLIENTWRITE_HEADER, tmp, strlen(tmp));
free(tmp);
if(result) {
state(conn, SSH_SFTP_CLOSE);
@@ -1419,7 +1422,7 @@ static CURLcode myssh_statemach_act(struct connectdata *conn, bool *block)
sshc->actualcode = CURLE_OUT_OF_MEMORY;
break;
}
- result = Curl_client_write(conn, CLIENTWRITE_BODY,
+ result = Curl_client_write(data, CLIENTWRITE_BODY,
tmpLine, sshc->readdir_len + 1);
free(tmpLine);
@@ -1540,7 +1543,7 @@ static CURLcode myssh_statemach_act(struct connectdata *conn, bool *block)
sshc->readdir_currLen,
sshc->readdir_totalLen -
sshc->readdir_currLen, "\n");
- result = Curl_client_write(conn, CLIENTWRITE_BODY,
+ result = Curl_client_write(data, CLIENTWRITE_BODY,
sshc->readdir_line,
sshc->readdir_currLen);
@@ -1618,14 +1621,14 @@ static CURLcode myssh_statemach_act(struct connectdata *conn, bool *block)
failf(data, "Bad file size (%" CURL_FORMAT_CURL_OFF_T ")", size);
return CURLE_BAD_DOWNLOAD_RESUME;
}
- if(conn->data->state.use_range) {
+ if(data->state.use_range) {
curl_off_t from, to;
char *ptr;
char *ptr2;
CURLofft to_t;
CURLofft from_t;
- from_t = curlx_strtoofft(conn->data->state.range, &ptr, 0, &from);
+ from_t = curlx_strtoofft(data->state.range, &ptr, 0, &from);
if(from_t == CURL_OFFT_FLOW) {
return CURLE_RANGE_ERROR;
}
@@ -1772,7 +1775,7 @@ static CURLcode myssh_statemach_act(struct connectdata *conn, bool *block)
}
SSH_STRING_FREE_CHAR(sshc->homedir);
- conn->data->state.most_recent_ftp_entrypath = NULL;
+ data->state.most_recent_ftp_entrypath = NULL;
state(conn, SSH_SESSION_DISCONNECT);
break;
@@ -1808,7 +1811,7 @@ static CURLcode myssh_statemach_act(struct connectdata *conn, bool *block)
if(!sshc->scp_session) {
err_msg = ssh_get_error(sshc->ssh_session);
- failf(conn->data, "%s", err_msg);
+ failf(data, "%s", err_msg);
MOVE_TO_ERROR_STATE(CURLE_UPLOAD_FAILED);
}
@@ -1819,7 +1822,7 @@ static CURLcode myssh_statemach_act(struct connectdata *conn, bool *block)
rc = ssh_scp_init(sshc->scp_session);
if(rc != SSH_OK) {
err_msg = ssh_get_error(sshc->ssh_session);
- failf(conn->data, "%s", err_msg);
+ failf(data, "%s", err_msg);
MOVE_TO_ERROR_STATE(CURLE_UPLOAD_FAILED);
}
@@ -1828,7 +1831,7 @@ static CURLcode myssh_statemach_act(struct connectdata *conn, bool *block)
(int)data->set.new_file_perms);
if(rc != SSH_OK) {
err_msg = ssh_get_error(sshc->ssh_session);
- failf(conn->data, "%s", err_msg);
+ failf(data, "%s", err_msg);
MOVE_TO_ERROR_STATE(CURLE_UPLOAD_FAILED);
}
@@ -1856,7 +1859,7 @@ static CURLcode myssh_statemach_act(struct connectdata *conn, bool *block)
rc = ssh_scp_init(sshc->scp_session);
if(rc != SSH_OK) {
err_msg = ssh_get_error(sshc->ssh_session);
- failf(conn->data, "%s", err_msg);
+ failf(data, "%s", err_msg);
MOVE_TO_ERROR_STATE(CURLE_COULDNT_CONNECT);
}
state(conn, SSH_SCP_DOWNLOAD);
@@ -1868,7 +1871,7 @@ static CURLcode myssh_statemach_act(struct connectdata *conn, bool *block)
rc = ssh_scp_pull_request(sshc->scp_session);
if(rc != SSH_SCP_REQUEST_NEWFILE) {
err_msg = ssh_get_error(sshc->ssh_session);
- failf(conn->data, "%s", err_msg);
+ failf(data, "%s", err_msg);
MOVE_TO_ERROR_STATE(CURLE_REMOTE_FILE_NOT_FOUND);
break;
}
@@ -1938,7 +1941,7 @@ static CURLcode myssh_statemach_act(struct connectdata *conn, bool *block)
ssh_disconnect(sshc->ssh_session);
SSH_STRING_FREE_CHAR(sshc->homedir);
- conn->data->state.most_recent_ftp_entrypath = NULL;
+ data->state.most_recent_ftp_entrypath = NULL;
state(conn, SSH_SESSION_FREE);
/* FALLTHROUGH */
@@ -2015,10 +2018,12 @@ static CURLcode myssh_statemach_act(struct connectdata *conn, bool *block)
/* called by the multi interface to figure out what socket(s) to wait for and
for what actions in the DO_DONE, PERFORM and WAITPERFORM states */
-static int myssh_perform_getsock(const struct connectdata *conn,
- curl_socket_t *sock)
+static int myssh_getsock(struct Curl_easy *data,
+ struct connectdata *conn,
+ curl_socket_t *sock)
{
int bitmap = GETSOCK_BLANK;
+ (void)data;
sock[0] = conn->sock[FIRSTSOCKET];
if(conn->waitfor & KEEP_RECV)
@@ -2030,16 +2035,6 @@ static int myssh_perform_getsock(const struct connectdata *conn,
return bitmap;
}
-/* Generic function called by the multi interface to figure out what socket(s)
- to wait for and for what actions during the DOING and PROTOCONNECT states*/
-static int myssh_getsock(struct connectdata *conn,
- curl_socket_t *sock)
-{
- /* if we know the direction we can use the generic *_getsock() function even
- for the protocol_connect and doing states */
- return myssh_perform_getsock(conn, sock);
-}
-
static void myssh_block2waitfor(struct connectdata *conn, bool block)
{
struct ssh_conn *sshc = &conn->proto.sshc;
@@ -2061,13 +2056,14 @@ static void myssh_block2waitfor(struct connectdata *conn, bool block)
}
/* called repeatedly until done from multi.c */
-static CURLcode myssh_multi_statemach(struct connectdata *conn,
+static CURLcode myssh_multi_statemach(struct Curl_easy *data,
bool *done)
{
+ struct connectdata *conn = data->conn;
struct ssh_conn *sshc = &conn->proto.sshc;
bool block; /* we store the status and use that to provide a ssh_getsock()
implementation */
- CURLcode result = myssh_statemach_act(conn, &block);
+ CURLcode result = myssh_statemach_act(data, &block);
*done = (sshc->state == SSH_STOP) ? TRUE : FALSE;
myssh_block2waitfor(conn, block);
@@ -2075,19 +2071,19 @@ static CURLcode myssh_multi_statemach(struct connectdata *conn,
return result;
}
-static CURLcode myssh_block_statemach(struct connectdata *conn,
+static CURLcode myssh_block_statemach(struct Curl_easy *data,
bool disconnect)
{
+ struct connectdata *conn = data->conn;
struct ssh_conn *sshc = &conn->proto.sshc;
CURLcode result = CURLE_OK;
- struct Curl_easy *data = conn->data;
while((sshc->state != SSH_STOP) && !result) {
bool block;
timediff_t left = 1000;
struct curltime now = Curl_now();
- result = myssh_statemach_act(conn, &block);
+ result = myssh_statemach_act(data, &block);
if(result)
break;
@@ -2121,11 +2117,13 @@ static CURLcode myssh_block_statemach(struct connectdata *conn,
/*
* SSH setup connection
*/
-static CURLcode myssh_setup_connection(struct connectdata *conn)
+static CURLcode myssh_setup_connection(struct Curl_easy *data,
+ struct connectdata *conn)
{
struct SSHPROTO *ssh;
+ (void)conn;
- conn->data->req.p.ssh = ssh = calloc(1, sizeof(struct SSHPROTO));
+ data->req.p.ssh = ssh = calloc(1, sizeof(struct SSHPROTO));
if(!ssh)
return CURLE_OUT_OF_MEMORY;
@@ -2139,17 +2137,17 @@ static Curl_send scp_send, sftp_send;
* Curl_ssh_connect() gets called from Curl_protocol_connect() to allow us to
* do protocol-specific actions at connect-time.
*/
-static CURLcode myssh_connect(struct connectdata *conn, bool *done)
+static CURLcode myssh_connect(struct Curl_easy *data, bool *done)
{
struct ssh_conn *ssh;
CURLcode result;
+ struct connectdata *conn = data->conn;
curl_socket_t sock = conn->sock[FIRSTSOCKET];
- struct Curl_easy *data = conn->data;
int rc;
/* initialize per-handle data if not already */
if(!data->req.p.ssh)
- myssh_setup_connection(conn);
+ myssh_setup_connection(data, conn);
/* We default to persistent connections. We set this already in this connect
function to make the re-use checks properly be able to check this bit. */
@@ -2244,20 +2242,20 @@ static CURLcode myssh_connect(struct connectdata *conn, bool *done)
state(conn, SSH_INIT);
- result = myssh_multi_statemach(conn, done);
+ result = myssh_multi_statemach(data, done);
return result;
}
/* called from multi.c while DOing */
-static CURLcode scp_doing(struct connectdata *conn, bool *dophase_done)
+static CURLcode scp_doing(struct Curl_easy *data, bool *dophase_done)
{
CURLcode result;
- result = myssh_multi_statemach(conn, dophase_done);
+ result = myssh_multi_statemach(data, dophase_done);
if(*dophase_done) {
- DEBUGF(infof(conn->data, "DO phase is complete\n"));
+ DEBUGF(infof(data, "DO phase is complete\n"));
}
return result;
}
@@ -2272,34 +2270,35 @@ static CURLcode scp_doing(struct connectdata *conn, bool *dophase_done)
*/
static
-CURLcode scp_perform(struct connectdata *conn,
+CURLcode scp_perform(struct Curl_easy *data,
bool *connected, bool *dophase_done)
{
CURLcode result = CURLE_OK;
+ struct connectdata *conn = data->conn;
- DEBUGF(infof(conn->data, "DO phase starts\n"));
+ DEBUGF(infof(data, "DO phase starts\n"));
*dophase_done = FALSE; /* not done yet */
/* start the first command in the DO phase */
state(conn, SSH_SCP_TRANS_INIT);
- result = myssh_multi_statemach(conn, dophase_done);
+ result = myssh_multi_statemach(data, dophase_done);
*connected = conn->bits.tcpconnect[FIRSTSOCKET];
if(*dophase_done) {
- DEBUGF(infof(conn->data, "DO phase is complete\n"));
+ DEBUGF(infof(data, "DO phase is complete\n"));
}
return result;
}
-static CURLcode myssh_do_it(struct connectdata *conn, bool *done)
+static CURLcode myssh_do_it(struct Curl_easy *data, bool *done)
{
CURLcode result;
bool connected = 0;
- struct Curl_easy *data = conn->data;
+ struct connectdata *conn = data->conn;
struct ssh_conn *sshc = &conn->proto.sshc;
*done = FALSE; /* default to false */
@@ -2316,9 +2315,9 @@ static CURLcode myssh_do_it(struct connectdata *conn, bool *done)
Curl_pgrsSetDownloadSize(data, -1);
if(conn->handler->protocol & CURLPROTO_SCP)
- result = scp_perform(conn, &connected, done);
+ result = scp_perform(data, &connected, done);
else
- result = sftp_perform(conn, &connected, done);
+ result = sftp_perform(data, &connected, done);
return result;
}
@@ -2326,7 +2325,8 @@ static CURLcode myssh_do_it(struct connectdata *conn, bool *done)
/* BLOCKING, but the function is using the state machine so the only reason
this is still blocking is that the multi interface code has no support for
disconnecting operations that takes a while */
-static CURLcode scp_disconnect(struct connectdata *conn,
+static CURLcode scp_disconnect(struct Curl_easy *data,
+ struct connectdata *conn,
bool dead_connection)
{
CURLcode result = CURLE_OK;
@@ -2338,7 +2338,7 @@ static CURLcode scp_disconnect(struct connectdata *conn,
state(conn, SSH_SESSION_DISCONNECT);
- result = myssh_block_statemach(conn, TRUE);
+ result = myssh_block_statemach(data, TRUE);
}
return result;
@@ -2346,44 +2346,45 @@ static CURLcode scp_disconnect(struct connectdata *conn,
/* generic done function for both SCP and SFTP called from their specific
done functions */
-static CURLcode myssh_done(struct connectdata *conn, CURLcode status)
+static CURLcode myssh_done(struct Curl_easy *data, CURLcode status)
{
CURLcode result = CURLE_OK;
- struct SSHPROTO *protop = conn->data->req.p.ssh;
+ struct SSHPROTO *protop = data->req.p.ssh;
if(!status) {
/* run the state-machine */
- result = myssh_block_statemach(conn, FALSE);
+ result = myssh_block_statemach(data, FALSE);
}
else
result = status;
if(protop)
Curl_safefree(protop->path);
- if(Curl_pgrsDone(conn))
+ if(Curl_pgrsDone(data->conn))
return CURLE_ABORTED_BY_CALLBACK;
- conn->data->req.keepon = 0; /* clear all bits */
+ data->req.keepon = 0; /* clear all bits */
return result;
}
-static CURLcode scp_done(struct connectdata *conn, CURLcode status,
+static CURLcode scp_done(struct Curl_easy *data, CURLcode status,
bool premature)
{
(void) premature; /* not used */
if(!status)
- state(conn, SSH_SCP_DONE);
+ state(data->conn, SSH_SCP_DONE);
- return myssh_done(conn, status);
+ return myssh_done(data, status);
}
-static ssize_t scp_send(struct connectdata *conn, int sockindex,
+static ssize_t scp_send(struct Curl_easy *data, int sockindex,
const void *mem, size_t len, CURLcode *err)
{
int rc;
+ struct connectdata *conn = data->conn;
(void) sockindex; /* we only support SCP on the fixed known primary socket */
(void) err;
@@ -2409,10 +2410,11 @@ static ssize_t scp_send(struct connectdata *conn, int sockindex,
return len;
}
-static ssize_t scp_recv(struct connectdata *conn, int sockindex,
+static ssize_t scp_recv(struct Curl_easy *data, int sockindex,
char *mem, size_t len, CURLcode *err)
{
ssize_t nread;
+ struct connectdata *conn = data->conn;
(void) err;
(void) sockindex; /* we only support SCP on the fixed known primary socket */
@@ -2448,13 +2450,14 @@ static ssize_t scp_recv(struct connectdata *conn, int sockindex,
*/
static
-CURLcode sftp_perform(struct connectdata *conn,
+CURLcode sftp_perform(struct Curl_easy *data,
bool *connected,
bool *dophase_done)
{
CURLcode result = CURLE_OK;
+ struct connectdata *conn = data->conn;
- DEBUGF(infof(conn->data, "DO phase starts\n"));
+ DEBUGF(infof(data, "DO phase starts\n"));
*dophase_done = FALSE; /* not done yet */
@@ -2462,24 +2465,24 @@ CURLcode sftp_perform(struct connectdata *conn,
state(conn, SSH_SFTP_QUOTE_INIT);
/* run the state-machine */
- result = myssh_multi_statemach(conn, dophase_done);
+ result = myssh_multi_statemach(data, dophase_done);
*connected = conn->bits.tcpconnect[FIRSTSOCKET];
if(*dophase_done) {
- DEBUGF(infof(conn->data, "DO phase is complete\n"));
+ DEBUGF(infof(data, "DO phase is complete\n"));
}
return result;
}
/* called from multi.c while DOing */
-static CURLcode sftp_doing(struct connectdata *conn,
+static CURLcode sftp_doing(struct Curl_easy *data,
bool *dophase_done)
{
- CURLcode result = myssh_multi_statemach(conn, dophase_done);
+ CURLcode result = myssh_multi_statemach(data, dophase_done);
if(*dophase_done) {
- DEBUGF(infof(conn->data, "DO phase is complete\n"));
+ DEBUGF(infof(data, "DO phase is complete\n"));
}
return result;
}
@@ -2487,46 +2490,50 @@ static CURLcode sftp_doing(struct connectdata *conn,
/* BLOCKING, but the function is using the state machine so the only reason
this is still blocking is that the multi interface code has no support for
disconnecting operations that takes a while */
-static CURLcode sftp_disconnect(struct connectdata *conn, bool dead_connection)
+static CURLcode sftp_disconnect(struct Curl_easy *data,
+ struct connectdata *conn,
+ bool dead_connection)
{
CURLcode result = CURLE_OK;
(void) dead_connection;
- DEBUGF(infof(conn->data, "SSH DISCONNECT starts now\n"));
+ DEBUGF(infof(data, "SSH DISCONNECT starts now\n"));
if(conn->proto.sshc.ssh_session) {
/* only if there's a session still around to use! */
state(conn, SSH_SFTP_SHUTDOWN);
- result = myssh_block_statemach(conn, TRUE);
+ result = myssh_block_statemach(data, TRUE);
}
- DEBUGF(infof(conn->data, "SSH DISCONNECT is done\n"));
+ DEBUGF(infof(data, "SSH DISCONNECT is done\n"));
return result;
}
-static CURLcode sftp_done(struct connectdata *conn, CURLcode status,
- bool premature)
+static CURLcode sftp_done(struct Curl_easy *data, CURLcode status,
+ bool premature)
{
+ struct connectdata *conn = data->conn;
struct ssh_conn *sshc = &conn->proto.sshc;
if(!status) {
/* Post quote commands are executed after the SFTP_CLOSE state to avoid
errors that could happen due to open file handles during POSTQUOTE
operation */
- if(!premature && conn->data->set.postquote && !conn->bits.retry)
+ if(!premature && data->set.postquote && !conn->bits.retry)
sshc->nextstate = SSH_SFTP_POSTQUOTE_INIT;
state(conn, SSH_SFTP_CLOSE);
}
- return myssh_done(conn, status);
+ return myssh_done(data, status);
}
/* return number of sent bytes */
-static ssize_t sftp_send(struct connectdata *conn, int sockindex,
+static ssize_t sftp_send(struct Curl_easy *data, int sockindex,
const void *mem, size_t len, CURLcode *err)
{
ssize_t nwrite;
+ struct connectdata *conn = data->conn;
(void)sockindex;
nwrite = sftp_write(conn->proto.sshc.sftp_file, mem, len);
@@ -2552,10 +2559,11 @@ static ssize_t sftp_send(struct connectdata *conn, int sockindex,
* Return number of received (decrypted) bytes
* or <0 on error
*/
-static ssize_t sftp_recv(struct connectdata *conn, int sockindex,
+static ssize_t sftp_recv(struct Curl_easy *data, int sockindex,
char *mem, size_t len, CURLcode *err)
{
ssize_t nread;
+ struct connectdata *conn = data->conn;
(void)sockindex;
DEBUGASSERT(len < CURL_MAX_READ_SIZE);
@@ -2563,8 +2571,8 @@ static ssize_t sftp_recv(struct connectdata *conn, int sockindex,
switch(conn->proto.sshc.sftp_recv_state) {
case 0:
conn->proto.sshc.sftp_file_index =
- sftp_async_read_begin(conn->proto.sshc.sftp_file,
- (uint32_t)len);
+ sftp_async_read_begin(conn->proto.sshc.sftp_file,
+ (uint32_t)len);
if(conn->proto.sshc.sftp_file_index < 0) {
*err = CURLE_RECV_ERROR;
return -1;
@@ -2638,7 +2646,7 @@ static void sftp_quote(struct connectdata *conn)
/* this sends an FTP-like "header" to the header callback so that the
current directory can be read very similar to how it is read when
using ordinary FTP. */
- result = Curl_client_write(conn, CLIENTWRITE_HEADER, tmp, strlen(tmp));
+ result = Curl_client_write(data, CLIENTWRITE_HEADER, tmp, strlen(tmp));
free(tmp);
if(result) {
state(conn, SSH_SFTP_CLOSE);
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