int client_init(int argc, char *const argv[])
{
/*配置
1. 默认设置
2. 配置文件 *
3. 命令参数
*/
/*默认设置*/
cli_conf.recv_port = DEFAULT_RCV_PORT;
cli_conf.mgroup = DEFAULT_MGROUP;
cli_conf.player = DEFAULT_PLAYER;
struct option cli_option[] = {
{ "port", required_argument, NULL, 'p'},
{ "player", required_argument, NULL, 'P'},
{ "mgroup", required_argument, NULL, 'm'},
{ "help", no_argument, NULL, 'h'},
};
/*命令行参数*/
int c;
while ((c = getopt_long(argc, argv, "p:P:m:h", cli_option, NULL)) != -1) {
switch (c) {
case 'p':
cli_conf.recv_port = optarg;
break;
case 'P':
cli_conf.player = optarg;
break;
case 'm':
cli_conf.mgroup = optarg;
break;
case 'h':
case '?':
usage(argv[0]);
exit(0);
break;
default:
fprintf(stderr, "ERROR: unkown opt '%c'\n", c);
exit(-1);
break;
}
}
#ifdef _DEBUG
printf("port: %s\n", cli_conf.recv_port);
printf("mgroup: %s\n", cli_conf.mgroup);
printf("player: %s\n", cli_conf.player);
#endif
/*网络连接*/
int sock_fd;
sock_fd = socket(AF_INET, SOCK_DGRAM, 0);
if (sock_fd < 0) {
perror("socket");
exit(-1);
}
struct sockaddr_in l_addr;
socklen_t addr_len = sizeof(l_addr);
int sw_loop_multicast = 1;
//加入到组播域
struct ip_mreqn mreq;
bzero(&mreq, sizeof(mreq));
inet_pton(AF_INET, cli_conf.mgroup, &mreq.imr_multiaddr);
inet_pton(AF_INET, "0.0.0.0", &mreq.imr_address);
mreq.imr_ifindex = if_nametoindex("eth0");
/*加入指定组播组*/
CHK_EXIT(setsockopt(sock_fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, &mreq, sizeof(mreq)));
/*可以收到本地发送的组播*/
CHK_EXIT(setsockopt(sock_fd, IPPROTO_IP, IP_MULTICAST_LOOP, &sw_loop_multicast, sizeof(sw_loop_multicast)));
bzero(&l_addr, sizeof(l_addr));
l_addr.sin_family = AF_INET;
l_addr.sin_port = htons(atoi(cli_conf.recv_port));
inet_pton(AF_INET, "0.0.0.0", &l_addr.sin_addr);
CHK_EXIT(bind(sock_fd, (const struct sockaddr *)&l_addr, addr_len));
DEBUG("bind ok, sock_fd: %d, listen: %s\n", sock_fd, cli_conf.recv_port);
return sock_fd;
}
/********************************************************************
* FUNCTION consume_yang_arg
*
* Parse the next N tokens as an argument-stmt
* Fill in the arg anf argel fields in the ext_template_t struct
*
* Error messages are printed by this function!!
* Do not duplicate error messages upon error return
*
* Current token is the 'argument' keyword
*
* INPUTS:
* tkc == token chain
* mod == module in progress
* ext == extension template in progress
* argdone == address of duplicate entry error flag
*
* OUTPUTS:
* *argdone == TRUE upon exit
*
* RETURNS:
* status of the operation
*********************************************************************/
static status_t
consume_yang_arg (tk_chain_t *tkc,
ncx_module_t *mod,
ext_template_t *ext,
boolean *argdone)
{
const xmlChar *val;
const char *expstr;
xmlChar *errstr;
dlq_hdr_t errQ;
tk_type_t tktyp;
boolean done, yinel, save, errsave;
status_t res, retres;
#ifdef DEBUG
if (!tkc || !mod) {
return SET_ERROR(ERR_INTERNAL_PTR);
}
#endif
val = NULL;
expstr = NULL;
done = FALSE;
yinel = FALSE;
save = TRUE;
res = NO_ERR;
retres = NO_ERR;
dlq_createSQue(&errQ);
/* check duplicate entry error first */
if (*argdone) {
retres = ERR_NCX_ENTRY_EXISTS;
ncx_print_errormsg(tkc, mod, retres);
save = FALSE;
} else {
*argdone = TRUE;
}
/* Get the mandatory argument name */
if (save) {
res = yang_consume_id_string(tkc, mod, &ext->arg);
} else {
errstr = NULL;
res = yang_consume_id_string(tkc, mod, &errstr);
if (errstr) {
m__free(errstr);
}
}
CHK_EXIT(res, retres);
/* Get the starting left brace for the sub-clauses
* or a semi-colon to end the extension-stmt
*/
res = TK_ADV(tkc);
if (res != NO_ERR) {
ncx_print_errormsg(tkc, mod, res);
return res;
}
switch (TK_CUR_TYP(tkc)) {
case TK_TT_SEMICOL:
done = TRUE;
break;
case TK_TT_LBRACE:
break;
default:
retres = ERR_NCX_WRONG_TKTYPE;
expstr = "semi-colon or left brace";
ncx_mod_exp_err(tkc, mod, retres, expstr);
done = TRUE;
}
/* get the extension statements and any appinfo extensions */
while (!done) {
/* get the next token */
res = TK_ADV(tkc);
if (res != NO_ERR) {
ncx_print_errormsg(tkc, mod, res);
return res;
}
tktyp = TK_CUR_TYP(tkc);
val = TK_CUR_VAL(tkc);
/* check the current token type */
switch (tktyp) {
case TK_TT_NONE:
res = ERR_NCX_EOF;
ncx_print_errormsg(tkc, mod, res);
return res;
case TK_TT_MSTRING:
/* vendor-specific clause found instead */
if (save) {
res = ncx_consume_appinfo(tkc, mod, &ext->appinfoQ);
} else {
res = ncx_consume_appinfo(tkc, mod, &errQ);
ncx_clean_appinfoQ(&errQ);
}
CHK_EXIT(res, retres);
continue;
case TK_TT_RBRACE:
done = TRUE;
continue;
case TK_TT_TSTRING:
break; /* YANG clause assumed */
default:
retres = ERR_NCX_WRONG_TKTYPE;
ncx_mod_exp_err(tkc, mod, retres, expstr);
continue;
}
/* Got a token string so check the value */
if (!xml_strcmp(val, YANG_K_YIN_ELEMENT)) {
if (save) {
res = yang_consume_boolean(tkc,
mod,
&ext->argel,
&yinel,
&ext->appinfoQ);
} else {
res = yang_consume_boolean(tkc,
mod,
&errsave,
NULL,
NULL);
}
} else {
res = ERR_NCX_WRONG_TKVAL;
ncx_mod_exp_err(tkc, mod, res, expstr);
}
CHK_EXIT(res, retres);
}
return retres;
} /* consume_yang_arg */