--- libaitrpc/src/cli.c 2010/06/28 17:10:39 1.1.1.1.2.4 +++ libaitrpc/src/cli.c 2011/08/29 22:37:06 1.4 @@ -3,9 +3,46 @@ * by Michael Pounov * * $Author: misho $ -* $Id: cli.c,v 1.1.1.1.2.4 2010/06/28 17:10:39 misho Exp $ +* $Id: cli.c,v 1.4 2011/08/29 22:37:06 misho Exp $ * -*************************************************************************/ +************************************************************************** +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 + +Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 + by Michael Pounov . 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 +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" @@ -19,10 +56,14 @@ rpc_cli_t * rpc_cli_openBLOBClient(rpc_cli_t * __restrict rpccli, u_short Port) { rpc_cli_t *cli = NULL; - struct sockaddr_in sin; - struct sockaddr_in6 sin6; + struct sockaddr sa; + struct sockaddr_in *sin = (struct sockaddr_in*) &sa; + struct sockaddr_in6 *sin6 = (struct sockaddr_in6*) &sa; + struct sockaddr_un *sun = (struct sockaddr_un*) &sa; - if (!rpccli || (rpccli->cli_sa.sa_family != AF_INET && rpccli->cli_sa.sa_family != AF_INET6)) { + if (!rpccli || + (rpccli->cli_sa.sa_family != AF_INET && rpccli->cli_sa.sa_family != AF_INET6 && + rpccli->cli_sa.sa_family != AF_LOCAL)) { rpc_SetErr(EINVAL, "Error:: Invalid parameters can`t connect to BLOB server ...\n"); return NULL; } @@ -36,16 +77,23 @@ rpc_cli_openBLOBClient(rpc_cli_t * __restrict rpccli, } else memcpy(cli, rpccli, sizeof(rpc_cli_t)); - if (rpccli->cli_sa.sa_family == AF_INET) { - memcpy(&sin, &rpccli->cli_sa, sizeof sin); - sin.sin_port = htons(Port); - memcpy(&cli->cli_sa, &sin, sizeof(struct sockaddr)); - } else { - memcpy(&sin6, &rpccli->cli_sa, sizeof sin6); - sin6.sin6_port = htons(Port); - memcpy(&cli->cli_sa, &sin6, sizeof(struct sockaddr)); + memcpy(&sa, &rpccli->cli_sa, sizeof sa); + switch (rpccli->cli_sa.sa_family) { + case AF_INET: + sin->sin_port = htons(Port); + memcpy(&cli->cli_sa, sin, sizeof(struct sockaddr)); + break; + case AF_INET6: + sin6->sin6_port = htons(Port); + memcpy(&cli->cli_sa, sin6, sizeof(struct sockaddr)); + break; + case AF_LOCAL: + strlcat(sun->sun_path, ".blob", sizeof sun->sun_path); + memcpy(&cli->cli_sa, sun, sizeof(struct sockaddr)); + break; } + /* connect to BLOB server */ cli->cli_sock = socket(cli->cli_sa.sa_family, SOCK_STREAM, 0); if (cli->cli_sock == -1) { LOGERR; @@ -97,39 +145,44 @@ rpc_cli_openClient(u_int ProgID, u_int ProcID, u_short { rpc_cli_t *cli = NULL; struct hostent *host = NULL; - struct sockaddr_in sin; - struct sockaddr_in6 sin6; + struct sockaddr sa; + struct sockaddr_in *sin = (struct sockaddr_in*) &sa; + struct sockaddr_in6 *sin6 = (struct sockaddr_in6*) &sa; + struct sockaddr_un *sun = (struct sockaddr_un*) &sa; - if (!csHost || (family != AF_INET && family != AF_INET6)) { + if (!csHost || (family != AF_INET && family != AF_INET6 && family != AF_LOCAL)) { rpc_SetErr(EINVAL, "Error:: Invalid parameters can`t connect to RPC server ...\n"); return NULL; } if (!Port) Port = RPC_DEFPORT; - if (csHost) { + if (csHost && family != AF_LOCAL) { host = gethostbyname2(csHost, family); if (!host) { rpc_SetErr(h_errno, "Error:: %s\n", hstrerror(h_errno)); return NULL; } } + memset(&sa, 0, sizeof sa); + sa.sa_family = family; switch (family) { case AF_INET: - memset(&sin, 0, sizeof sin); - sin.sin_len = sizeof sin; - sin.sin_family = family; - sin.sin_port = htons(Port); + sin->sin_len = sizeof(struct sockaddr_in); + sin->sin_port = htons(Port); if (csHost) - memcpy(&sin.sin_addr, host->h_addr, host->h_length); + memcpy(&sin->sin_addr, host->h_addr, host->h_length); break; case AF_INET6: - memset(&sin6, 0, sizeof sin6); - sin6.sin6_len = sizeof sin6; - sin6.sin6_family = family; - sin6.sin6_port = htons(Port); + sin6->sin6_len = sizeof(struct sockaddr_in6); + sin6->sin6_port = htons(Port); if (csHost) - memcpy(&sin6.sin6_addr, host->h_addr, host->h_length); + memcpy(&sin6->sin6_addr, host->h_addr, host->h_length); break; + case AF_LOCAL: + sun->sun_len = sizeof(struct sockaddr_un); + if (csHost) + strlcpy(sun->sun_path, csHost, sizeof sun->sun_path); + break; default: rpc_SetErr(EINVAL, "Error:: Invalid parameters can`t connect to RPC server ...\n"); return NULL; @@ -152,10 +205,19 @@ rpc_cli_openClient(u_int ProgID, u_int ProcID, u_short ((rpc_sess_t*) cli->cli_parent)->sess_process = ProcID; } - if (family == AF_INET) - memcpy(&cli->cli_sa, &sin, sizeof cli->cli_sa); - else - memcpy(&cli->cli_sa, &sin6, sizeof cli->cli_sa); + switch (family) { + case AF_INET: + memcpy(&cli->cli_sa, sin, sizeof cli->cli_sa); + break; + case AF_INET6: + memcpy(&cli->cli_sa, sin6, sizeof cli->cli_sa); + break; + case AF_LOCAL: + memcpy(&cli->cli_sa, sun, sizeof cli->cli_sa); + break; + } + + /* connect to RPC server */ cli->cli_sock = socket(family, SOCK_STREAM, 0); if (cli->cli_sock == -1) { LOGERR; @@ -202,69 +264,75 @@ rpc_cli_closeClient(rpc_cli_t * __restrict cli) * @csModule = Module name, if NULL self binary * @csFunc = Function name for execute * @in_argc = IN count of arguments - * @in_vals = IN RPC call array of rpc values + * @in_vars = IN RPC call array of rpc values * @out_argc = OUT returned count of arguments - * @out_vals = OUT returned array of rpc values, must be free after use (see rpc_cli_freeVals()) + * @out_vars = OUT returned array of rpc values, must be free after use (see rpc_cli_freeVals()) * return: -1 error or != -1 ok result */ int rpc_cli_execCall(rpc_cli_t *cli, const char *csModule, const char *csFunc, int in_argc, - rpc_val_t * __restrict in_vals, int *out_argc, rpc_val_t ** __restrict out_vals) + rpc_val_t * __restrict in_vars, int *out_argc, rpc_val_t ** __restrict out_vars) { fd_set fds; u_char buf[BUFSIZ], str[MAXPATHLEN + UCHAR_MAX + 1], *data; struct tagRPCCall *rpc = (struct tagRPCCall*) buf; - struct tagRPCRet *rrpc; + struct tagRPCRet *rrpc = NULL; int ret = 0, Limit = 0; register int i; rpc_val_t *v; struct timeval tv = { DEF_RPC_TIMEOUT, 0 }; FD_ZERO(&fds); - memset(buf, 0, BUFSIZ); - memset(str, 0, MAXPATHLEN + UCHAR_MAX + 1); - if (!cli || !csFunc || (in_argc && !in_vals)) { + memset(buf, 0, sizeof buf); + memset(str, 0, sizeof str); + if (!cli || !csFunc || (in_argc && !in_vars)) { rpc_SetErr(EINVAL, "Error:: Can`t execute call because parameter is null or invalid!\n"); return -1; } + /* build RPC call string for hash */ 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); + strlcpy((char*) str, csModule, sizeof str); + strlcat((char*) str, "__", sizeof str); + strlcat((char*) str, csFunc, sizeof str); + /* prepare RPC call */ memcpy(&rpc->call_session, cli->cli_parent, sizeof rpc->call_session); rpc->call_argc = in_argc; - rpc->call_tag = crcFletcher16((u_short*) str, (MAXPATHLEN + UCHAR_MAX + 1) / 2); - rpc->call_hash = hash_fnv((char*) str, MAXPATHLEN + UCHAR_MAX + 1); + rpc->call_tag = crcFletcher16((u_short*) str, sizeof str / 2); + rpc->call_hash = hash_fnv((char*) str, sizeof str); Limit = sizeof(struct tagRPCCall); if (in_argc) { 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); + if (in_argc * sizeof(rpc_val_t) > sizeof buf - Limit) { + rpc_SetErr(EMSGSIZE, "Error:: in prepare RPC packet values (-7) ...\n"); + return -7; + } else + Limit += in_argc * sizeof(rpc_val_t); + memcpy(v, in_vars, 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) { + for (i = 0; i < in_argc && !ret; i++) { + switch (in_vars[i].val_type) { case buffer: - if (Limit + in_vals[i].val_len > BUFSIZ) { + if (Limit + in_vars[i].val_len > sizeof buf) { ret = -7; break; } - memcpy(data, in_vals[i].val.buffer, in_vals[i].val_len); + memcpy(data, in_vars[i].val.buffer, in_vars[i].val_len); v[i].val.buffer = (uint8_t*) ((void*) data - (void*) v); - data += in_vals[i].val_len; - Limit += in_vals[i].val_len; + data += in_vars[i].val_len; + Limit += in_vars[i].val_len; break; case string: - if (Limit + in_vals[i].val_len + 1 > BUFSIZ) { + if (Limit + in_vars[i].val_len > sizeof buf) { ret = -7; break; } - memcpy(data, in_vals[i].val.string, in_vals[i].val_len); + memcpy(data, in_vars[i].val.string, in_vars[i].val_len); v[i].val.string = (int8_t*) ((void*) data - (void*) v); - data += in_vals[i].val_len; - Limit += in_vals[i].val_len; + data += in_vars[i].val_len; + Limit += in_vars[i].val_len; break; default: break; @@ -275,82 +343,109 @@ rpc_cli_execCall(rpc_cli_t *cli, const char *csModule, return ret; } } + if ((ret = send(cli->cli_sock, buf, Limit, 0)) == -1) { LOGERR; return -1; } if (ret != Limit) { - rpc_SetErr(EBADMSG, "Error:: in send RPC request, should be send %d bytes, really is %d\n", + rpc_SetErr(ECANCELED, "Error:: in send RPC request, should be send %d bytes, really is %d\n", Limit, ret); return -9; } FD_SET(cli->cli_sock, &fds); if ((ret = select(cli->cli_sock + 1, &fds, NULL, NULL, &tv)) < 1) { - if (ret) { + if (ret) LOGERR; - } else + else rpc_SetErr(ETIMEDOUT, "Error:: timeout, no return from RPC server?\n"); + return -1; } - memset(buf, 0, BUFSIZ); - if ((ret = recv(cli->cli_sock, buf, BUFSIZ, 0)) == -1) { + memset(buf, 0, sizeof buf); + if ((ret = recv(cli->cli_sock, buf, sizeof buf, 0)) == -1) { LOGERR; return -3; } - if (!ret) // receive EOF + if (!ret) /* receive EOF! */ return 0; - if (ret < sizeof(struct tagRPCCall)) { + if (ret < sizeof(struct tagRPCRet)) { rpc_SetErr(EMSGSIZE, "Error:: too short RPC packet ...\n"); return -4; } else rrpc = (struct tagRPCRet*) buf; - // check RPC packet session info + /* check RPC packet session info */ if (memcmp(&rrpc->ret_session, cli->cli_parent, sizeof rrpc->ret_session)) { rpc_SetErr(EINVAL, "Error:: get invalid RPC session ...\n"); return -5; - } + } else + Limit = sizeof(struct tagRPCRet); if (rrpc->ret_retcode < 0 && rrpc->ret_errno) { - rpc_SetErr(rrpc->ret_errno, "Error::Server side: %s\n", strerror(rrpc->ret_errno)); + rpc_SetErr(rrpc->ret_errno, "Error::Server side: %d %s\n", + rrpc->ret_retcode, strerror(rrpc->ret_errno)); return -6; } - // RPC is OK! Go decapsulate variables ... + if (rrpc->ret_argc * sizeof(rpc_val_t) > sizeof buf - Limit) { + rpc_SetErr(EMSGSIZE, "Error:: reply RPC packet is too long ...\n"); + return -7; + } else + Limit += rrpc->ret_argc * sizeof(rpc_val_t); + /* RPC is OK! Go decapsulate variables ... */ if (rrpc->ret_argc) { *out_argc = rrpc->ret_argc; - *out_vals = calloc(rrpc->ret_argc, sizeof(rpc_val_t)); - if (!*out_vals) { + *out_vars = calloc(rrpc->ret_argc, sizeof(rpc_val_t)); + if (!*out_vars) { LOGERR; *out_argc = 0; return -1; } else - Limit = rrpc->ret_argc * sizeof(rpc_val_t); - memcpy(*out_vals, buf + sizeof(struct tagRPCRet), Limit); - // RPC received variables types OK! - data = (u_char*) buf + sizeof(struct tagRPCRet) + Limit; + memcpy(*out_vars, buf + sizeof(struct tagRPCRet), Limit - sizeof(struct tagRPCRet)); + /* RPC received variables types OK! */ + data = (u_char*) buf + Limit; for (i = 0; i < rrpc->ret_argc; i++) - switch ((*out_vals)[i].val_type) { + switch ((*out_vars)[i].val_type) { case buffer: - (*out_vals)[i].val.buffer = malloc((*out_vals)[i].val_len); - if (!(*out_vals)[i].val.buffer) { + if ((*out_vars)[i].val_len > sizeof buf - Limit) { + rpc_SetErr(EMSGSIZE, "Error:: Too long RPC packet ...\n"); + free(*out_vars); + *out_vars = NULL; + *out_argc = 0; + return -7; + } else + Limit += (*out_vars)[i].val_len; + + (*out_vars)[i].val.buffer = malloc((*out_vars)[i].val_len); + if (!(*out_vars)[i].val.buffer) { rpc_SetErr(errno, "Error:: in prepare RPC reply ...\n"); - free(*out_vals); - *out_vals = NULL; + free(*out_vars); + *out_vars = NULL; *out_argc = 0; return -1; } else - memcpy((*out_vals)[i].val.buffer, data, (*out_vals)[i].val_len); - data += (*out_vals)[i].val_len; + memcpy((*out_vars)[i].val.buffer, data, (*out_vars)[i].val_len); + data += (*out_vars)[i].val_len; break; case string: - (*out_vals)[i].val.string = (int8_t*) strdup((char*) data); - if (!(*out_vals)[i].val.string) { + if ((*out_vars)[i].val_len > sizeof buf - Limit) { + rpc_SetErr(EMSGSIZE, "Error:: Too long RPC packet ...\n"); + free(*out_vars); + *out_vars = NULL; + *out_argc = 0; + return -7; + } else + Limit += (*out_vars)[i].val_len; + + (*out_vars)[i].val.string = malloc((*out_vars)[i].val_len); + if (!(*out_vars)[i].val.string) { rpc_SetErr(errno, "Error:: in prepare RPC reply ...\n"); - free(*out_vals); - *out_vals = NULL; + free(*out_vars); + *out_vars = NULL; *out_argc = 0; return -1; - } - data += (*out_vals)[i].val_len + 1; + } else + memcpy((*out_vars)[i].val.string, data, (*out_vars)[i].val_len); + data += (*out_vars)[i].val_len; break; default: break; @@ -358,8 +453,8 @@ rpc_cli_execCall(rpc_cli_t *cli, const char *csModule, } else { if (out_argc) *out_argc = 0; - if (out_vals) - *out_vals = NULL; + if (out_vars) + *out_vars = NULL; } return rrpc->ret_retcode; @@ -368,20 +463,20 @@ rpc_cli_execCall(rpc_cli_t *cli, const char *csModule, /* * rpc_cli_freeVals() Free rpc_val_t array returned from RPC call * @args = Number of arguments in array - * @vals = Value elements + * @vars = Value elements * return: none */ inline void -rpc_cli_freeVals(int args, rpc_val_t *vals) +rpc_cli_freeVals(int args, rpc_val_t *vars) { register int i; - if (!vals) + if (!vars) return; for (i = 0; i < args; i++) - RPC_FREE_VAL(&vals[i]); + RPC_FREE_VAL(&vars[i]); - free(vals); - vals = NULL; + free(vars); + vars = NULL; }