version 1.1.1.1.2.2, 2010/06/18 15:47:33
|
version 1.28.2.1, 2024/03/19 15:17:16
|
Line 5
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Line 5
|
* $Author$ |
* $Author$ |
* $Id$ |
* $Id$ |
* |
* |
*************************************************************************/ | ************************************************************************** |
| The ELWIX and AITNET software is distributed under the following |
| terms: |
| |
| All of the documentation and software included in the ELWIX and AITNET |
| Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org> |
| |
| Copyright 2004 - 2024 |
| by Michael Pounov <misho@elwix.org>. All rights reserved. |
| |
| Redistribution and use in source and binary forms, with or without |
| modification, are permitted provided that the following conditions |
| are met: |
| 1. Redistributions of source code must retain the above copyright |
| notice, this list of conditions and the following disclaimer. |
| 2. Redistributions in binary form must reproduce the above copyright |
| notice, this list of conditions and the following disclaimer in the |
| documentation and/or other materials provided with the distribution. |
| 3. All advertising materials mentioning features or use of this software |
| must display the following acknowledgement: |
| This product includes software developed by Michael Pounov <misho@elwix.org> |
| ELWIX - Embedded LightWeight unIX and its contributors. |
| 4. Neither the name of AITNET nor the names of its contributors |
| may be used to endorse or promote products derived from this software |
| without specific prior written permission. |
| |
| THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND |
| ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| SUCH DAMAGE. |
| */ |
#include "global.h" |
#include "global.h" |
|
|
|
|
/* |
/* |
* rpc_cli_openClient() Connect to RPC Server | * rpc_cli_openBLOBClient() - Connect to BLOB Server |
* @ProgID = ProgramID for RPC session request | * |
* @ProcID = ProcessID for RPC session request | * @rpccli = RPC Client session |
* @family = Family socket type, AF_INET or AF_INET6 | |
* @csHost = Host name or IP address for bind server | |
* @Port = Port for bind server, if Port == 0 default port is selected |
* @Port = Port for bind server, if Port == 0 default port is selected |
* return: NULL == error or !=NULL connection to RPC server established | * return: NULL == error or !=NULL connection to BLOB server established |
*/ |
*/ |
rpc_cli_t * |
rpc_cli_t * |
rpc_cli_openClient(u_int ProgID, u_int ProcID, u_short family, const char *csHost, u_short Port) | rpc_cli_openBLOBClient(rpc_cli_t * __restrict rpccli, u_short Port) |
{ |
{ |
rpc_cli_t *cli = NULL; |
rpc_cli_t *cli = NULL; |
struct hostent *host = NULL; | int n; |
struct sockaddr_in sin; | |
struct sockaddr_in6 sin6; | |
|
|
if (!csHost || (family != AF_INET && family != AF_INET6)) { | if (!rpccli) { |
rpc_SetErr(EINVAL, "Error:: Invalid parameters can`t connect to RPC server ...\n"); | rpc_SetErr(EINVAL, "Invalid parameters can`t connect to BLOB server"); |
return NULL; |
return NULL; |
} |
} |
if (!Port) | |
Port = RPC_DEFPORT; | cli = e_malloc(sizeof(rpc_cli_t)); |
if (csHost) { | if (!cli) { |
host = gethostbyname2(csHost, family); | LOGERR; |
if (!host) { | return NULL; |
rpc_SetErr(h_errno, "Error:: %s\n", hstrerror(h_errno)); | } else |
return NULL; | memcpy(cli, rpccli, sizeof(rpc_cli_t)); |
} | |
} | memcpy(&cli->cli_sa, &rpccli->cli_sa, sizeof cli->cli_sa); |
switch (family) { | switch (cli->cli_sa.sa.sa_family) { |
case AF_INET: |
case AF_INET: |
memset(&sin, 0, sizeof sin); | cli->cli_sa.sin.sin_port = |
sin.sin_len = sizeof sin; | htons(Port ? Port : ntohs(cli->cli_sa.sin.sin_port) + 1); |
sin.sin_family = family; | |
sin.sin_port = htons(Port); | |
if (csHost) | |
memcpy(&sin.sin_addr, host->h_addr, host->h_length); | |
break; |
break; |
case AF_INET6: |
case AF_INET6: |
memset(&sin6, 0, sizeof sin6); | cli->cli_sa.sin6.sin6_port = |
sin6.sin6_len = sizeof sin6; | htons(Port ? Port : ntohs(cli->cli_sa.sin6.sin6_port) + 1); |
sin6.sin6_family = family; | |
sin6.sin6_port = htons(Port); | |
if (csHost) | |
memcpy(&sin6.sin6_addr, host->h_addr, host->h_length); | |
break; |
break; |
|
case AF_LOCAL: |
|
strlcat(cli->cli_sa.sun.sun_path, ".blob", sizeof cli->cli_sa.sun.sun_path); |
|
break; |
default: |
default: |
rpc_SetErr(EINVAL, "Error:: Invalid parameters can`t connect to RPC server ...\n"); | rpc_SetErr(EINVAL, "Invalid socket type %d", cli->cli_sa.sa.sa_family); |
return NULL; |
return NULL; |
} |
} |
|
|
cli = malloc(sizeof(rpc_cli_t)); | AIT_COPY_VAL(&cli->cli_buf, &rpccli->cli_buf); |
| n = AIT_LEN(&cli->cli_buf); |
| |
| /* connect to BLOB server */ |
| cli->cli_sock = socket(cli->cli_sa.sa.sa_family, SOCK_STREAM, 0); |
| if (cli->cli_sock == -1) { |
| LOGERR; |
| e_free(cli); |
| return NULL; |
| } |
| if (setsockopt(cli->cli_sock, SOL_SOCKET, SO_SNDBUF, &n, sizeof n) == -1) { |
| LOGERR; |
| close(cli->cli_sock); |
| e_free(cli); |
| return NULL; |
| } |
| if (setsockopt(cli->cli_sock, SOL_SOCKET, SO_RCVBUF, &n, sizeof n) == -1) { |
| LOGERR; |
| close(cli->cli_sock); |
| e_free(cli); |
| return NULL; |
| } |
| if (connect(cli->cli_sock, &cli->cli_sa.sa, e_addrlen(&cli->cli_sa)) == -1) { |
| LOGERR; |
| close(cli->cli_sock); |
| e_free(cli); |
| return NULL; |
| } else |
| fcntl(cli->cli_sock, F_SETFL, fcntl(cli->cli_sock, F_GETFL) | O_NONBLOCK); |
| |
| return cli; |
| } |
| |
| /* |
| * rpc_cli_closeBLOBClient() - Close connection to BLOB server and free resources |
| * |
| * @cli = BLOB Client session |
| * return: none |
| */ |
| void |
| rpc_cli_closeBLOBClient(rpc_cli_t ** __restrict cli) |
| { |
| if (!cli || !*cli) |
| return; |
| |
| shutdown((*cli)->cli_sock, SHUT_RDWR); |
| close((*cli)->cli_sock); |
| |
| AIT_FREE_VAL(&(*cli)->cli_buf); |
| |
| e_free(*cli); |
| *cli = NULL; |
| } |
| |
| /* -------------------------------------------------------------- */ |
| |
| /* |
| * rpc_cli_openClient() - Connect to RPC Server |
| * |
| * @InstID = InstID for RPC session request |
| * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet) |
| * @csHost = Host name or IP address for bind server |
| * @Port = Port for bind server, if Port == 0 default port is selected |
| * @proto = Protocol, if == 0 choose SOCK_STREAM |
| * return: NULL == error or !=NULL connection to RPC server established |
| */ |
| rpc_cli_t * |
| rpc_cli_openClient(u_char InstID, int netBuf, const char *csHost, u_short Port, int proto) |
| { |
| int n = 1; |
| rpc_cli_t *cli = NULL; |
| sockaddr_t sa = E_SOCKADDR_INIT; |
| socklen_t salen; |
| |
| if (proto < 0 || proto > SOCK_RAW) { |
| rpc_SetErr(EINVAL, "Invalid parameters can`t open RPC client"); |
| return NULL; |
| } |
| |
| srandom(time(NULL) ^ getpid()); |
| |
| if (!Port && proto < SOCK_RAW) |
| Port = RPC_DEFPORT; |
| if (!(salen = e_gethostbyname(csHost, Port, &sa))) |
| return NULL; |
| if (!proto) |
| proto = SOCK_STREAM; |
| if (netBuf < RPC_MIN_BUFSIZ) |
| netBuf = BUFSIZ; |
| else |
| netBuf = E_ALIGN(netBuf, 2); /* align netBuf length */ |
| |
| cli = e_malloc(sizeof(rpc_cli_t)); |
if (!cli) { |
if (!cli) { |
LOGERR; |
LOGERR; |
return NULL; |
return NULL; |
} else |
} else |
memset(cli, 0, sizeof(rpc_cli_t)); |
memset(cli, 0, sizeof(rpc_cli_t)); |
cli->cli_parent = malloc(sizeof(rpc_sess_t)); | |
| /* build session */ |
| cli->cli_parent = e_malloc(sizeof(rpc_sess_t)); |
if (!cli->cli_parent) { |
if (!cli->cli_parent) { |
LOGERR; |
LOGERR; |
free(cli); | e_free(cli); |
return NULL; |
return NULL; |
} else { |
} else { |
((rpc_sess_t*) cli->cli_parent)->sess_version = RPC_VERSION; |
((rpc_sess_t*) cli->cli_parent)->sess_version = RPC_VERSION; |
((rpc_sess_t*) cli->cli_parent)->sess_program = ProgID; | ((rpc_sess_t*) cli->cli_parent)->sess_instance = InstID; |
((rpc_sess_t*) cli->cli_parent)->sess_process = ProcID; | |
} |
} |
|
|
if (family == AF_INET) | cli->cli_id = proto; |
memcpy(&cli->cli_sa, &sin, sizeof cli->cli_sa); | memcpy(&cli->cli_sa, &sa, sizeof cli->cli_sa); |
else | AIT_SET_BUFSIZ(&cli->cli_buf, 0, netBuf); |
memcpy(&cli->cli_sa, &sin6, sizeof cli->cli_sa); | |
cli->cli_sock = socket(family, SOCK_STREAM, 0); | /* connect to RPC server */ |
| cli->cli_sock = socket(cli->cli_sa.sa.sa_family, cli->cli_id, |
| cli->cli_id == SOCK_RAW ? IPPROTO_ERPC : 0); |
if (cli->cli_sock == -1) { |
if (cli->cli_sock == -1) { |
LOGERR; |
LOGERR; |
free(cli->cli_parent); | goto err; |
free(cli); | |
return NULL; | |
} |
} |
if (connect(cli->cli_sock, &cli->cli_sa, sizeof cli->cli_sa) == -1) { | if (setsockopt(cli->cli_sock, SOL_SOCKET, SO_SNDBUF, |
| &netBuf, sizeof netBuf) == -1) { |
LOGERR; |
LOGERR; |
free(cli->cli_parent); | goto err; |
free(cli); | |
return NULL; | |
} |
} |
|
if (setsockopt(cli->cli_sock, SOL_SOCKET, SO_RCVBUF, |
|
&netBuf, sizeof netBuf) == -1) { |
|
LOGERR; |
|
goto err; |
|
} |
|
if (cli->cli_id == SOCK_STREAM) { |
|
setsockopt(cli->cli_sock, IPPROTO_TCP, TCP_NODELAY, &n, sizeof n); |
|
if (connect(cli->cli_sock, &cli->cli_sa.sa, salen) == -1) { |
|
LOGERR; |
|
goto err; |
|
} |
|
} |
|
if (cli->cli_id == SOCK_DGRAM) { |
|
sockaddr_t sa2; |
|
|
|
if (!(salen = e_gethostbyname(csHost, 0, &sa2))) |
|
goto err; |
|
if (bind(cli->cli_sock, &sa2.sa, salen) == -1) { |
|
LOGERR; |
|
goto err; |
|
} |
|
} |
|
|
|
fcntl(cli->cli_sock, F_SETFL, fcntl(cli->cli_sock, F_GETFL) | O_NONBLOCK); |
return cli; |
return cli; |
|
err: |
|
AIT_FREE_VAL(&cli->cli_buf); |
|
if (cli->cli_sock > 2) |
|
close(cli->cli_sock); |
|
e_free(cli->cli_parent); |
|
e_free(cli); |
|
return NULL; |
} |
} |
|
|
/* |
/* |
* rpc_cli_closeClient() Close connection to RPC server and free resources | * rpc_cli_reconnectClient() - Reconnecting client to RPC server |
| * |
* @cli = RPC Client session |
* @cli = RPC Client session |
|
* return: -1 error or 0 ok |
|
*/ |
|
int |
|
rpc_cli_reconnectClient(rpc_cli_t * __restrict cli) |
|
{ |
|
int netBuf; |
|
|
|
if (!cli) |
|
return -1; |
|
else |
|
netBuf = AIT_LEN(&cli->cli_buf); |
|
|
|
if (cli->cli_id == SOCK_STREAM) |
|
shutdown(cli->cli_sock, SHUT_RDWR); |
|
if (cli->cli_id == SOCK_DGRAM && cli->cli_sa.sa.sa_family == AF_LOCAL) { |
|
sockaddr_t sa2 = E_SOCKADDR_INIT; |
|
socklen_t salen = sizeof sa2; |
|
|
|
#ifndef __linux__ |
|
sa2.sa.sa_len = salen; |
|
#endif |
|
if (!getsockname(cli->cli_sock, &sa2.sa, &salen)) |
|
unlink(sa2.sun.sun_path); |
|
} |
|
close(cli->cli_sock); |
|
|
|
srandom(time(NULL) ^ getpid()); |
|
|
|
cli->cli_sock = socket(cli->cli_sa.sa.sa_family, cli->cli_id, 0); |
|
if (cli->cli_sock == -1) { |
|
LOGERR; |
|
return -1; |
|
} |
|
if (setsockopt(cli->cli_sock, SOL_SOCKET, SO_SNDBUF, |
|
&netBuf, sizeof netBuf) == -1) { |
|
LOGERR; |
|
close(cli->cli_sock); |
|
return -1; |
|
} |
|
if (setsockopt(cli->cli_sock, SOL_SOCKET, SO_RCVBUF, |
|
&netBuf, sizeof netBuf) == -1) { |
|
LOGERR; |
|
close(cli->cli_sock); |
|
return -1; |
|
} |
|
if (cli->cli_id == SOCK_STREAM) |
|
if (connect(cli->cli_sock, &cli->cli_sa.sa, e_addrlen(&cli->cli_sa)) == -1) { |
|
LOGERR; |
|
close(cli->cli_sock); |
|
return -1; |
|
} |
|
|
|
fcntl(cli->cli_sock, F_SETFL, fcntl(cli->cli_sock, F_GETFL) | O_NONBLOCK); |
|
return 0; |
|
} |
|
|
|
/* |
|
* rpc_cli_closeClient() - Close connection to RPC server and free resources |
|
* |
|
* @cli = RPC Client session |
* return: none |
* return: none |
*/ |
*/ |
void |
void |
rpc_cli_closeClient(rpc_cli_t * __restrict cli) | rpc_cli_closeClient(rpc_cli_t ** __restrict cli) |
{ |
{ |
if (!cli) { | if (!cli || !*cli || (*cli)->cli_id == SOCK_BPF) |
rpc_SetErr(EINVAL, "Error:: Can`t close connection because parameter is null!\n"); | |
return; |
return; |
|
|
|
if ((*cli)->cli_id == SOCK_STREAM) |
|
shutdown((*cli)->cli_sock, SHUT_RDWR); |
|
if ((*cli)->cli_id == SOCK_DGRAM && (*cli)->cli_sa.sa.sa_family == AF_LOCAL) { |
|
sockaddr_t sa2 = E_SOCKADDR_INIT; |
|
socklen_t salen = sizeof sa2; |
|
|
|
#ifndef __linux__ |
|
sa2.sa.sa_len = salen; |
|
#endif |
|
if (!getsockname((*cli)->cli_sock, &sa2.sa, &salen)) |
|
unlink(sa2.sun.sun_path); |
} |
} |
|
close((*cli)->cli_sock); |
|
|
shutdown(cli->cli_sock, SHUT_RDWR); | AIT_FREE_VAL(&(*cli)->cli_buf); |
close(cli->cli_sock); | |
|
|
if (cli->cli_parent) | if ((*cli)->cli_parent) |
free(cli->cli_parent); | e_free((*cli)->cli_parent); |
free(cli); | |
cli = NULL; | e_free(*cli); |
| *cli = NULL; |
} |
} |
|
|
|
/* |
|
* rpc_pkt_Send() - Send RPC packet |
|
* |
|
* @sock = Socket |
|
* @type = Type of socket |
|
* @sa = Server address |
|
* @pkt = RPC packet |
|
* @len = Length of packet |
|
* return: -1 error, 0 EOF or >0 sended bytes |
|
*/ |
|
int |
|
rpc_pkt_Send(int sock, int type, sockaddr_t * __restrict sa, ait_val_t * __restrict pkt, int len) |
|
{ |
|
if (!pkt) { |
|
rpc_SetErr(EINVAL, "Invalid argument(s)!"); |
|
return -1; |
|
} |
|
|
|
return rpc_Write(sock, type, MSG_NOSIGNAL, sa, pkt, len); |
|
} |
|
|
/* |
/* |
* rpc_cli_execCall() Execute RPC call | * rpc_pkt_Receive() - Receive RPC packet |
* @cli = RPC Client session | * |
* @csModule = Module name, if NULL self binary | * @sock = Socket |
* @csFunc = Function name for execute | * @type = Type of socket |
* @in_argc = IN count of arguments | * @sa = Server address |
* @in_vals = IN RPC call array of rpc values | * @pkt = RPC packet |
* @out_argc = OUT returned count of arguments | * @seq = Signed packet with seq.no |
* @out_vals = OUT returned array of rpc values, must be free after use (see rpc_cli_freeVals()) | * return: -1 error, 0 EOF or >0 received bytes |
* return: -1 error or != -1 ok result | |
*/ |
*/ |
int |
int |
rpc_cli_execCall(rpc_cli_t *cli, const char *csModule, const char *csFunc, int in_argc, | rpc_pkt_Receive(int sock, int type, sockaddr_t * __restrict sa, ait_val_t * __restrict pkt, int seq) |
rpc_val_t * __restrict in_vals, int *out_argc, rpc_val_t ** __restrict out_vals) | |
{ |
{ |
fd_set fds; | int ret; |
u_char buf[BUFSIZ], str[MAXPATHLEN + UCHAR_MAX + 1], *data; | struct tagRPCCall *rpc; |
struct tagRPCCall *rpc = (struct tagRPCCall*) buf; | |
struct tagRPCRet *rrpc; | |
int ret = 0, Limit = 0; | |
register int i; | |
rpc_val_t *v; | |
struct timeval tv = { DEF_RPC_TIMEOUT, 0 }; | |
|
|
FD_ZERO(&fds); | if (!pkt) { |
memset(buf, 0, BUFSIZ); | rpc_SetErr(EINVAL, "Invalid argument(s)!"); |
memset(str, 0, MAXPATHLEN + UCHAR_MAX + 1); | |
if (!cli || !csFunc || (in_argc && !in_vals)) { | |
rpc_SetErr(EINVAL, "Error:: Can`t execute call because parameter is null or invalid!\n"); | |
return -1; |
return -1; |
} |
} |
if (csModule) |
|
strlcpy((char*) str, csModule, MAXPATHLEN + UCHAR_MAX + 1); |
|
strlcat((char*) str, "__", MAXPATHLEN + UCHAR_MAX + 1); |
|
strlcat((char*) str, csFunc, MAXPATHLEN + UCHAR_MAX + 1); |
|
|
|
memcpy(&rpc->call_session, cli->cli_parent, sizeof rpc->call_session); | /* reply from RPC server */ |
rpc->call_argc = in_argc; | do { |
rpc->call_tag = crcFletcher16((u_short*) str, (MAXPATHLEN + UCHAR_MAX + 1) / 2); | if (type == SOCK_STREAM || type == SOCK_EXT) |
rpc->call_hash = hash_fnv((char*) str, MAXPATHLEN + UCHAR_MAX + 1); | ret = rpc_Read(sock, type, 0, NULL, pkt); |
Limit = sizeof(struct tagRPCCall); | else |
if (in_argc) { | ret = rpc_Read(sock, type, 0, sa, pkt); |
v = (rpc_val_t*) (buf + sizeof(struct tagRPCCall)); | |
memcpy(v, in_vals, in_argc * sizeof(rpc_val_t)); | |
Limit += in_argc * sizeof(rpc_val_t); | |
data = (u_char*) v + in_argc * sizeof(rpc_val_t); | |
for (i = 0; i < in_argc; i++) { | |
switch (in_vals[i].val_type) { | |
case buffer: | |
if (Limit + in_vals[i].val_len > BUFSIZ) { | |
ret = -7; | |
break; | |
} | |
|
|
memcpy(data, in_vals[i].val.buffer, in_vals[i].val_len); | if (ret > 0) { |
v[i].val.buffer = (uint8_t*) ((void*) data - (void*) v); | rpc = (struct tagRPCCall*) AIT_GET_BUF(pkt); |
data += in_vals[i].val_len; | if (ret < ntohl(rpc->call_len)) |
Limit += in_vals[i].val_len; | continue; |
break; | |
case string: | |
if (Limit + in_vals[i].val_len + 1 > BUFSIZ) { | |
ret = -7; | |
break; | |
} | |
|
|
memcpy(data, in_vals[i].val.string, in_vals[i].val_len); | /* check for loop request */ |
v[i].val.string = (int8_t*) ((void*) data - (void*) v); | if (!(rpc->call_io & RPC_ACK)) |
data += in_vals[i].val_len; | continue; |
Limit += in_vals[i].val_len; | /* check for signed request */ |
break; | if (seq != ntohl(rpc->call_seq)) |
case array: | continue; |
if (Limit + in_vals[i].val_len > BUFSIZ) { | |
ret = -7; | |
break; | |
} | |
| |
memcpy(data, in_vals[i].val.array, in_vals[i].val_len); | |
v[i].val.array = (int8_t**) ((void*) data - (void*) v); | |
data += in_vals[i].val_len; | |
Limit += in_vals[i].val_len; | |
break; | |
default: | |
break; | |
} | |
} |
} |
if (ret < 0) { | } while (ret < 0); |
rpc_SetErr(EMSGSIZE, "Error:: in prepare RPC packet (-7) ...\n"); | |
return ret; | return ret; |
} | } |
| |
| /* |
| * rpc_pkt_Request() - Build RPC Request packet |
| * |
| * @pkt = Packet buffer |
| * @sess = RPC session info |
| * @tag = Function tag for execution |
| * @vars = Function argument array of values, may be NULL |
| * @noreply = >0 We not want RPC reply, -1 IPC request with reply |
| * @nocrc = Without CRC calculation |
| * @seq = Sign packet with seq.no |
| * return: -1 error or != -1 prepared bytes into packet |
| */ |
| int |
| rpc_pkt_Request(ait_val_t * __restrict pkt, rpc_sess_t * __restrict sess, u_short tag, |
| array_t * __restrict vars, int noreply, int nocrc, int seq) |
| { |
| struct tagRPCCall *rpc; |
| int ret = 0, estlen, len = sizeof(struct tagRPCCall); |
| u_char *buf; |
| |
| if (!pkt || !sess) { |
| rpc_SetErr(EINVAL, "Invalid argument(s)!"); |
| return -1; |
} |
} |
if ((ret = send(cli->cli_sock, buf, Limit, 0)) == -1) { | |
LOGERR; | /* calc estimated length */ |
| estlen = ait_resideVars(vars) + len; |
| if (estlen > AIT_LEN(pkt)) { |
| rpc_SetErr(EMSGSIZE, "Message too long"); |
return -1; |
return -1; |
} |
} |
if (ret != Limit) { | buf = AIT_GET_BUF(pkt); |
rpc_SetErr(EBADMSG, "Error:: in send RPC request, should be send %d bytes, really is %d\n", | |
Limit, ret); | |
return -9; | |
} | |
|
|
FD_SET(cli->cli_sock, &fds); | /* prepare RPC call */ |
if ((ret = select(cli->cli_sock + 1, &fds, NULL, NULL, &tv)) < 1) { | rpc = (struct tagRPCCall*) buf; |
if (ret) { | rpc_addPktSession(&rpc->call_session, sess); |
LOGERR; | rpc->call_tag = htons(tag); |
| if (!vars) |
| rpc->call_argc = 0; |
| else |
| rpc->call_argc = (u_char) array_Size(vars); |
| |
| /* set reply */ |
| rpc->call_req.flags = (uint64_t) htonl((noreply > 0) ? RPC_NOREPLY : RPC_REPLY); |
| |
| if (array_Size(vars)) { |
| /* marshaling variables */ |
| ret = ait_vars2buffer(buf + len, AIT_LEN(pkt) - len, vars); |
| if (ret == -1) { |
| rpc_SetErr(EBADRPC, "Failed to prepare RPC packet values"); |
| return -1; |
} else |
} else |
rpc_SetErr(ETIMEDOUT, "Error:: timeout, no return from RPC server?\n"); | len += ret; |
return -1; | |
} |
} |
memset(buf, 0, BUFSIZ); | |
if ((ret = recv(cli->cli_sock, buf, BUFSIZ, 0)) == -1) { | /* total packet length */ |
LOGERR; | rpc->call_len = htonl(len); |
return -3; | rpc->call_io = (noreply == -1) ? RPC_IPC : RPC_REQ; |
| |
| /* sign packet */ |
| rpc->call_seq = htonl(seq); |
| |
| if (!nocrc) { |
| /* calculate CRC */ |
| rpc->call_crc ^= rpc->call_crc; |
| rpc->call_crc = htons(crcFletcher16((u_short*) buf, len / 2)); |
} |
} |
if (!ret) // receive EOF | |
return 0; | return len; |
if (ret < sizeof(struct tagRPCCall)) { | } |
rpc_SetErr(EMSGSIZE, "Error:: too short RPC packet ...\n"); | |
return -4; | /* |
| * rpc_pkt_Replay() - Decode RPC Replay packet |
| * |
| * @pkt = Packet buffer |
| * @sess = RPC session info, if =NULL don't check session |
| * @tag = Function tag, if =CALL_TAG_MAX don't check tag |
| * @vars = Function argument array of values, may be NULL |
| * @nocrc = Without CRC calculation |
| * return: -1 error or != -1 return value from function |
| */ |
| int |
| rpc_pkt_Replay(ait_val_t * __restrict pkt, rpc_sess_t * __restrict sess, u_short tag, |
| array_t ** __restrict vars, int nocrc) |
| { |
| struct tagRPCCall *rpc; |
| int len; |
| u_char *buf; |
| uint16_t crc; |
| |
| if (!pkt) { |
| rpc_SetErr(EINVAL, "Invalid argument(s)!"); |
| return -1; |
} else |
} else |
rrpc = (struct tagRPCRet*) buf; | buf = AIT_GET_BUF(pkt); |
// check RPC packet session info | |
if (memcmp(&rrpc->ret_session, cli->cli_parent, sizeof rrpc->ret_session)) { | rpc = (struct tagRPCCall*) buf; |
rpc_SetErr(EINVAL, "Error:: get invalid RPC session ...\n"); | if (!nocrc) { |
return -5; | /* calculate CRC */ |
| crc = ntohs(rpc->call_crc); |
| rpc->call_crc ^= rpc->call_crc; |
| if (crc != crcFletcher16((u_short*) buf, ntohl(rpc->call_len) / 2)) { |
| rpc_SetErr(ERPCMISMATCH, "Bad CRC RPC packet"); |
| return -1; |
| } |
} |
} |
if (rrpc->ret_retcode < 0 && rrpc->ret_errno) { | |
rpc_SetErr(rrpc->ret_errno, "Error::Server side: %s\n", strerror(rrpc->ret_errno)); | /* check RPC packet session info */ |
return -6; | if (sess && rpc_chkPktSession(&rpc->call_session, sess)) { |
| rpc_SetErr(ERPCMISMATCH, "Get invalid RPC session"); |
| return -1; |
} |
} |
// RPC is OK! Go decapsulate variables ... | if (tag != CALL_TAG_MAX && ntohs(rpc->call_tag) != tag) { |
if (rrpc->ret_argc) { | rpc_SetErr(ERPCMISMATCH, "Get wrong RPC reply"); |
*out_argc = rrpc->ret_argc; | return -1; |
*out_vals = calloc(rrpc->ret_argc, sizeof(rpc_val_t)); | } |
if (!*out_vals) { | if (ntohl(rpc->call_rep.eno) && ntohl(rpc->call_rep.ret) == -1) { |
LOGERR; | rpc_SetErr(ntohl(rpc->call_rep.eno), "Server side: retcode=%d #%d %s", |
*out_argc = 0; | ntohl(rpc->call_rep.ret), ntohl(rpc->call_rep.eno), |
| strerror(ntohl(rpc->call_rep.eno))); |
| return -1; |
| } |
| len = rpc->call_argc * sizeof(ait_val_t); |
| if (len > AIT_LEN(pkt) - sizeof(struct tagRPCCall)) { |
| rpc_SetErr(EMSGSIZE, "Reply RPC packet not enough buffer space ..."); |
| return -1; |
| } |
| if (len > ntohl(rpc->call_len) - sizeof(struct tagRPCCall)) { |
| rpc_SetErr(EMSGSIZE, "Reply RPC packet is too short ..."); |
| return -1; |
| } |
| |
| /* RPC is OK! Go de-marshaling variables ... */ |
| if (vars && rpc->call_argc) { |
| #ifdef CLI_RES_ZCOPY |
| *vars = ait_buffer2vars(buf + sizeof(struct tagRPCCall), len, |
| rpc->call_argc, 42); |
| #else |
| *vars = ait_buffer2vars(buf + sizeof(struct tagRPCCall), len, |
| rpc->call_argc, 0); |
| #endif |
| if (!*vars) { |
| rpc_SetErr(elwix_GetErrno(), "%s", elwix_GetError()); |
return -1; |
return -1; |
} else | } |
Limit = rrpc->ret_argc * sizeof(rpc_val_t); | } |
memcpy(*out_vals, buf + sizeof(struct tagRPCRet), Limit); | |
// RPC received variables types OK! | return ntohl(rpc->call_rep.ret); |
data = (u_char*) buf + sizeof(struct tagRPCRet) + Limit; | } |
for (i = 0; i < rrpc->ret_argc; i++) | |
switch ((*out_vals)[i].val_type) { | /* |
case buffer: | * rpc_cli_execCall() - Execute RPC call |
(*out_vals)[i].val.buffer = malloc((*out_vals)[i].val_len); | * |
if (!(*out_vals)[i].val.buffer) { | * @cli = RPC Client session |
rpc_SetErr(errno, "Error:: in prepare RPC reply ...\n"); | * @noreply = >0 We not want RPC reply, -1 IPC request with reply |
free(*out_vals); | * @tag = Function tag for execution |
*out_vals = NULL; | * @in_vars = IN function argument array of values, may be NULL |
*out_argc = 0; | * @out_vars = OUT returned array of rpc values, if !=NULL must be free after use with ait_freeVars() |
return -1; | * return: -1 error, 0 ok result or 1 closed rpc connection |
} else | */ |
memcpy((*out_vals)[i].val.buffer, data, (*out_vals)[i].val_len); | int |
data += (*out_vals)[i].val_len; | rpc_cli_execCall(rpc_cli_t *cli, int noreply, u_short tag, |
break; | array_t * __restrict in_vars, array_t ** __restrict out_vars) |
case string: | { |
(*out_vals)[i].val.string = (int8_t*) strdup((char*) data); | int type = 0, wlen; |
if (!(*out_vals)[i].val.string) { | u_int seq = 0; |
rpc_SetErr(errno, "Error:: in prepare RPC reply ...\n"); | |
free(*out_vals); | if (!cli) { |
*out_vals = NULL; | rpc_SetErr(EINVAL, "Can`t execute call because parameter is null or invalid!"); |
*out_argc = 0; | return -1; |
return -1; | |
} | |
data += (*out_vals)[i].val_len + 1; | |
break; | |
case array: | |
(*out_vals)[i].val.array = malloc((*out_vals)[i].val_len); | |
if (!(*out_vals)[i].val.array) { | |
rpc_SetErr(errno, "Error:: in prepare RPC reply ...\n"); | |
free(*out_vals); | |
*out_vals = NULL; | |
*out_argc = 0; | |
return -1; | |
} else | |
memcpy((*out_vals)[i].val.array, data, (*out_vals)[i].val_len); | |
data += (*out_vals)[i].val_len; | |
break; | |
default: | |
break; | |
} | |
} else { |
} else { |
if (out_argc) | if (cli->cli_id == SOCK_STREAM || cli->cli_id == SOCK_EXT) |
*out_argc = 0; | type = cli->cli_id; |
if (out_vals) | else |
*out_vals = NULL; | seq = random(); /* sign package */ |
} |
} |
|
if (out_vars) |
|
*out_vars = NULL; |
|
|
return rrpc->ret_retcode; | if ((wlen = rpc_pkt_Request(&cli->cli_buf, cli->cli_parent, tag, |
| in_vars, noreply, type, seq)) == -1) |
| return -1; |
| |
| if ((wlen = rpc_pkt_Send(cli->cli_sock, cli->cli_id, &cli->cli_sa, |
| &cli->cli_buf, wlen)) == -1) |
| return -1; |
| if (!wlen) /* closed rpc connection */ |
| return 1; |
| |
| if (noreply > 0) /* we not want reply */ |
| return 0; |
| |
| if ((wlen = rpc_pkt_Receive(cli->cli_sock, cli->cli_id, &cli->cli_sa, |
| &cli->cli_buf, seq)) == -1) |
| return -1; |
| if (!wlen) { /* closed rpc connection */ |
| rpc_SetErr(ECONNRESET, "Closed connection"); |
| return -1; |
| } |
| |
| if ((wlen = rpc_pkt_Replay(&cli->cli_buf, cli->cli_parent, tag, |
| out_vars, type)) == -1) |
| return -1; |
| |
| return wlen; |
} |
} |
|
|
/* |
/* |
* rpc_cli_freeVals() Free rpc_val_t array returned from RPC call | * rpc_cli_freeCall() - Free resouce allocated by RPC call |
* @args = Number of arguments in array | * |
* @vals = Value elements | * @out_vars = Returned array with variables from RPC call |
* return: none |
* return: none |
*/ |
*/ |
inline void | void |
rpc_cli_freeVals(int args, rpc_val_t *vals) | rpc_cli_freeCall(array_t ** __restrict out_vars) |
{ |
{ |
|
#ifdef CLI_RES_ZCOPY |
|
array_Destroy(out_vars); |
|
#else |
|
ait_freeVars(out_vars); |
|
#endif |
|
} |
|
|
|
/* |
|
* rpc_cli_ping() - Ping RPC server |
|
* |
|
* @cli = connected client |
|
* return: -1 error or !=-1 ping seq id |
|
*/ |
|
int |
|
rpc_cli_ping(rpc_cli_t *cli) |
|
{ |
|
int ret = 0; |
|
array_t *arr = NULL; |
|
|
|
if (!cli) |
|
return -1; |
|
|
|
if (rpc_cli_execCall(cli, RPC_REPLY, CALL_SRVPING, NULL, &arr)) |
|
return -1; |
|
else |
|
ret = AIT_GET_U16(array(arr, 0, ait_val_t*)); |
|
rpc_cli_freeCall(&arr); |
|
|
|
return ret; |
|
} |
|
|
|
|
|
/* |
|
* rpc_cli_openClient2() - Connect to layer2 RPC Server |
|
* |
|
* @InstID = InstID for RPC session request |
|
* @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet) |
|
* @csIface = Interface name for bind client, if NULL first interface on host |
|
* @csHost = Host ethernet address |
|
* return: NULL == error or !=NULL connection to RPC server established |
|
*/ |
|
rpc_cli_t * |
|
rpc_cli_openClient2(u_char InstID, int netBuf, const char *csIface, const char *csHost) |
|
{ |
|
#ifndef __linux__ |
|
rpc_cli_t *cli = NULL; |
|
sockaddr_t sa = E_SOCKADDR_INIT, sal = E_SOCKADDR_INIT; |
|
char szIface[64], szStr[STRSIZ]; |
register int i; |
register int i; |
|
struct ifreq ifr; |
|
int n = 1; |
|
struct bpf_insn insns[] = { |
|
BPF_STMT(BPF_LD + BPF_H + BPF_ABS, 12), |
|
BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, RPC_DEFPORT, 0, 1), |
|
BPF_STMT(BPF_RET + BPF_K, -1), |
|
BPF_STMT(BPF_RET + BPF_K, 0), |
|
}; |
|
struct bpf_program fcode = { |
|
.bf_len = sizeof(insns) / sizeof(struct bpf_insn), |
|
.bf_insns = insns |
|
}; |
|
|
if (!vals) | if (!csHost || !e_getlinkbyname(csHost, &sa)) |
| return NULL; |
| if (!csIface) { |
| if (e_get1stiface(szIface, sizeof szIface)) |
| return NULL; |
| } else |
| strlcpy(szIface, csIface, sizeof szIface); |
| if (!e_getifacebyname(szIface, &sal)) |
| return NULL; |
| |
| cli = e_malloc(sizeof(rpc_cli_t)); |
| if (!cli) { |
| LOGERR; |
| return NULL; |
| } else |
| memset(cli, 0, sizeof(rpc_cli_t)); |
| |
| /* build session */ |
| cli->cli_parent = e_malloc(sizeof(rpc_sess_t)); |
| if (!cli->cli_parent) { |
| LOGERR; |
| e_free(cli); |
| return NULL; |
| } else { |
| ((rpc_sess_t*) cli->cli_parent)->sess_version = RPC_VERSION; |
| ((rpc_sess_t*) cli->cli_parent)->sess_instance = InstID; |
| } |
| |
| cli->cli_id = SOCK_BPF; |
| memcpy(&cli->cli_sa, &sa, sizeof cli->cli_sa); |
| |
| /* connect to RPC server */ |
| for (i = 0; i < 10; i++) { |
| memset(szStr, 0, sizeof szStr); |
| snprintf(szStr, sizeof szStr, "/dev/bpf%d", i); |
| cli->cli_sock = open(szStr, O_RDWR); |
| if (cli->cli_sock > STDERR_FILENO) |
| break; |
| } |
| if (cli->cli_sock < 3) { |
| LOGERR; |
| e_free(cli->cli_parent); |
| e_free(cli); |
| return NULL; |
| } |
| |
| if (ioctl(cli->cli_sock, BIOCIMMEDIATE, &n) == -1) { |
| LOGERR; |
| goto err; |
| } |
| if (ioctl(cli->cli_sock, BIOCSETF, &fcode) == -1) { |
| LOGERR; |
| goto err; |
| } |
| n = (netBuf < RPC_MIN_BUFSIZ) ? getpagesize() : E_ALIGN(netBuf, 2); |
| if (ioctl(cli->cli_sock, BIOCSBLEN, &n) == -1) { |
| LOGERR; |
| goto err; |
| } else |
| AIT_SET_BUFSIZ(&cli->cli_buf, 0, n); |
| |
| memset(&ifr, 0, sizeof ifr); |
| strlcpy(ifr.ifr_name, szIface, sizeof ifr.ifr_name); |
| if (ioctl(cli->cli_sock, BIOCSETIF, &ifr) == -1) { |
| LOGERR; |
| goto err; |
| } else |
| fcntl(cli->cli_sock, F_SETFL, |
| fcntl(cli->cli_sock, F_GETFL) | O_NONBLOCK); |
| |
| return cli; |
| err: |
| AIT_FREE_VAL(&cli->cli_buf); |
| if (cli->cli_sock > 2) |
| close(cli->cli_sock); |
| e_free(cli->cli_parent); |
| e_free(cli); |
| #else |
| rpc_SetErr(ENOTSUP, "Feature isn't supported on Linux!"); |
| #endif |
| return NULL; |
| } |
| |
| /* |
| * rpc_cli_closeClient2() - Close layer2 connection to RPC server and free resources |
| * |
| * @cli = RPC Client session |
| * return: none |
| */ |
| void |
| rpc_cli_closeClient2(rpc_cli_t ** __restrict cli) |
| { |
| if (!cli || !*cli || (*cli)->cli_id != SOCK_BPF) |
return; |
return; |
|
|
for (i = 0; i < args; i++) | close((*cli)->cli_sock); |
RPC_FREE_VAL(&vals[i]); | |
|
|
free(vals); | AIT_FREE_VAL(&(*cli)->cli_buf); |
vals = NULL; | |
| if ((*cli)->cli_parent) |
| e_free((*cli)->cli_parent); |
| |
| e_free(*cli); |
| *cli = NULL; |
| } |
| |
| /* |
| * rpc_cli_openClientExt() - Connect to pipe RPC Server |
| * |
| * @InstID = InstID for RPC session request |
| * @netBuf = Network buffer length (min:512 bytes), if =0 == BUFSIZ (also meaning max RPC packet) |
| * @fd = File descriptor |
| * return: NULL == error or !=NULL connection to RPC server established |
| */ |
| rpc_cli_t * |
| rpc_cli_openClientExt(u_char InstID, int netBuf, int fd) |
| { |
| rpc_cli_t *cli = NULL; |
| int n; |
| |
| cli = e_malloc(sizeof(rpc_cli_t)); |
| if (!cli) { |
| LOGERR; |
| return NULL; |
| } else |
| memset(cli, 0, sizeof(rpc_cli_t)); |
| |
| /* build session */ |
| cli->cli_parent = e_malloc(sizeof(rpc_sess_t)); |
| if (!cli->cli_parent) { |
| LOGERR; |
| e_free(cli); |
| return NULL; |
| } else { |
| ((rpc_sess_t*) cli->cli_parent)->sess_version = RPC_VERSION; |
| ((rpc_sess_t*) cli->cli_parent)->sess_instance = InstID; |
| } |
| |
| cli->cli_id = SOCK_EXT; |
| cli->cli_sock = fd; |
| |
| n = (netBuf < RPC_MIN_BUFSIZ) ? getpagesize() : E_ALIGN(netBuf, 2); |
| AIT_SET_BUFSIZ(&cli->cli_buf, 0, n); |
| |
| fcntl(cli->cli_sock, F_SETFL, |
| fcntl(cli->cli_sock, F_GETFL) | O_NONBLOCK); |
| |
| return cli; |
| } |
| |
| /* |
| * rpc_cli_closeClientExt() - Close pipe connection to RPC server and free resources |
| * |
| * @cli = RPC Client session |
| * return: none |
| */ |
| void |
| rpc_cli_closeClientExt(rpc_cli_t ** __restrict cli) |
| { |
| if (!cli || !*cli || (*cli)->cli_id != SOCK_EXT) |
| return; |
| |
| AIT_FREE_VAL(&(*cli)->cli_buf); |
| |
| if ((*cli)->cli_parent) |
| e_free((*cli)->cli_parent); |
| |
| e_free(*cli); |
| *cli = NULL; |
} |
} |