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Phase 1 of the Great Timeout Cleanup

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Sara Golemon
2005-04-01 06:11:34 +00:00
parent dce388e9c5
commit 15b8489046
2 changed files with 58 additions and 1 deletions
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6
include/libssh2_priv.h
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@@ -401,9 +401,15 @@ int libssh2_packet_read(LIBSSH2_SESSION *session, int block);
int libssh2_packet_ask_ex(LIBSSH2_SESSION *session, unsigned char packet_type, unsigned char **data, unsigned long *data_len, unsigned long match_ofs, const unsigned char *match_buf, unsigned long match_len, int poll_socket);
#define libssh2_packet_ask(session, packet_type, data, data_len, poll_socket) \
libssh2_packet_ask_ex((session), (packet_type), (data), (data_len), 0, NULL, 0, (poll_socket))
int libssh2_packet_askv_ex(LIBSSH2_SESSION *session, unsigned char *packet_types, unsigned char **data, unsigned long *data_len, unsigned long match_ofs, const unsigned char *match_buf, unsigned long match_len, int poll_socket);
#define libssh2_packet_askv(session, packet_types, data, data_len, poll_socket) \
libssh2_packet_askv_ex((session), (packet_types), (data), (data_len), 0, NULL, 0, (poll_socket))
int libssh2_packet_require_ex(LIBSSH2_SESSION *session, unsigned char packet_type, unsigned char **data, unsigned long *data_len, unsigned long match_ofs, const unsigned char *match_buf, unsigned long match_len);
#define libssh2_packet_require(session, packet_type, data, data_len) \
libssh2_packet_require_ex((session), (packet_type), (data), (data_len), 0, NULL, 0)
int libssh2_packet_requirev_ex(LIBSSH2_SESSION *session, unsigned char *packet_types, unsigned char **data, unsigned long *data_len, unsigned long match_ofs, const unsigned char *match_buf, unsigned long match_len);
#define libssh2_packet_requirev(session, packet_type, data, data_len) \
libssh2_packet_requirev_ex((session), (packet_types), (data), (data_len), 0, NULL, 0)
int libssh2_packet_write(LIBSSH2_SESSION *session, unsigned char *data, unsigned long data_len);
int libssh2_kex_exchange(LIBSSH2_SESSION *session, int reexchange);
unsigned long libssh2_channel_nextid(LIBSSH2_SESSION *session);

53
src/packet.c
View File

@@ -821,9 +821,27 @@ int libssh2_packet_ask_ex(LIBSSH2_SESSION *session, unsigned char packet_type, u
}
/* }}} */
/* {{{ libssh2_packet_askv
* Scan for any of a list of packet types in the brigade, optionally poll the socket for a packet first
*/
int libssh2_packet_askv_ex(LIBSSH2_SESSION *session, unsigned char *packet_types, unsigned char **data, unsigned long *data_len,
unsigned long match_ofs, const unsigned char *match_buf, unsigned long match_len, int poll_socket)
{
int i, packet_types_len = strlen(packet_types);
for(i = 0; i < packet_types_len; i++) {
if (0 == libssh2_packet_ask_ex(session, packet_types[i], data, data_len, match_ofs, match_buf, match_len, i ? 0 : poll_socket)) {
return 0;
}
}
return -1;
}
/* }}} */
/* {{{ libssh2_packet_require
* Loops libssh2_packet_read() until the packet requested is available
* SSH_DISCONNECT will cause a bailout though
* SSH_DISCONNECT or a SOCKET_DISCONNECTED will cause a bailout
*/
int libssh2_packet_require_ex(LIBSSH2_SESSION *session, unsigned char packet_type, unsigned char **data, unsigned long *data_len,
unsigned long match_ofs, const unsigned char *match_buf, unsigned long match_len)
@@ -851,6 +869,39 @@ int libssh2_packet_require_ex(LIBSSH2_SESSION *session, unsigned char packet_typ
}
/* }}} */
/* {{{ libssh2_packet_requirev
* Loops libssh2_packet_read() until one of a list of packet types requested is available
* SSH_DISCONNECT or a SOCKET_DISCONNECTED will cause a bailout
* packet_types is a null terminated list of packet_type numbers
*/
int libssh2_packet_requirev_ex(LIBSSH2_SESSION *session, unsigned char *packet_types, unsigned char **data, unsigned long *data_len,
unsigned long match_ofs, const unsigned char *match_buf, unsigned long match_len)
{
if (libssh2_packet_askv_ex(session, packet_types, data, data_len, match_ofs, match_buf, match_len, 0) == 0) {
/* One of the packets listed was available in the packet brigade */
return 0;
}
while (session->socket_state == LIBSSH2_SOCKET_DISCONNECTED) {
int ret = libssh2_packet_read(session, 1);
if (ret < 0) {
return -1;
}
if (ret == 0) {
continue;
}
if (strchr(packet_types, ret)) {
/* Be lazy, let packet_ask pull it out of the brigade */
return libssh2_packet_askv_ex(session, packet_types, data, data_len, match_ofs, match_buf, match_len, 0);
}
}
/* Only reached if the socket died */
return -1;
}
/* }}} */
/* {{{ libssh2_packet_write
* Send a packet, encrypting it and adding a MAC code if necessary
* Returns 0 on success, non-zero on failure