190 lines
5.2 KiB
C
190 lines
5.2 KiB
C
/*****************************************************************************\
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** **
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** l1oipctrl **
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** **
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**---------------------------------------------------------------------------**
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** Copyright: Andreas Eversberg (GPL) **
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** **
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** control l1oip virtual cards **
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** **
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\*****************************************************************************/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <netdb.h>
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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#include <errno.h>
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#include <mISDN/mISDNif.h>
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#include <mISDN/af_isdn.h>
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int main(int argc, char *argv[])
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{
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int ret;
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int count;
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int sock;
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int port;
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int try = 0, pri = 0;
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struct hostent *hostent;
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struct servent *servent;
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struct mISDN_ctrl_req crq;
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struct sockaddr_mISDN addr;
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struct mISDN_devinfo devinfo;
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memset(&crq, 0, sizeof(crq));
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/* usage */
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if (argc <= 1) {
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usage:
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printf(
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"Usage: %s <port> [param]\n"
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"Param is:\n"
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" getpeer -> gets current peer IP setting\n"
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" unsetpeer -> releases current peer IP\n"
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" setpeer <remote host> <remote port> [<local port>]\n"
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, argv[0]);
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return(0);
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}
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if (argc <= 2) {
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fprintf(stderr, "Missing parameter.\n");
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goto usage;
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}
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port = atoi(argv[1]);
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if (!strcmp(argv[2], "setpeer")) {
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crq.op = MISDN_CTRL_SETPEER;
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if (argc <= 3) {
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fprintf(stderr, "Missing remote host.\n");
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goto usage;
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}
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hostent = gethostbyname(argv[3]);
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if (!hostent) {
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fprintf(stderr, "Given host %s not found.\n", argv[3]);
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return(0);
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}
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if (hostent->h_addrtype != AF_INET || hostent->h_length != 4) {
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fprintf(stderr, "Given host %s is not IPv4 address.\n", argv[3]);
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return(0);
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}
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crq.p1 = ntohl(*(unsigned int *)hostent->h_addr);
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if (argc <= 4) {
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fprintf(stderr, "Missing remote port.\n");
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goto usage;
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}
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if (argv[4][0] < '0' || argv[4][0] > '9') {
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servent = getservbyname(argv[4], "udp");
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if (!servent) {
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fprintf(stderr, "Given port %s not found.\n", argv[4]);
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return(0);
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}
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crq.p2 = ntohs(servent->s_port);
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} else
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crq.p2 = atoi(argv[4]);
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if (argc > 5) {
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if (argv[5][0] < '0' || argv[5][0] > '9') {
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servent = getservbyname(argv[5], "udp");
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if (!servent) {
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fprintf(stderr, "Given port %s not found.\n", argv[5]);
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return(0);
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}
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crq.p2 |= ntohs(servent->s_port) << 16;
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} else
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crq.p2 |= atoi(argv[5]) << 16;
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}
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} else
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if (!strcmp(argv[2], "unsetpeer")) {
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crq.op = MISDN_CTRL_UNSETPEER;
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crq.p1 = 0;
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} else
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if (!strcmp(argv[2], "getpeer")) {
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crq.op = MISDN_CTRL_GETPEER;
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} else {
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fprintf(stderr, "Unknown parameter.\n");
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goto usage;
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}
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/* open mISDN */
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sock = socket(PF_ISDN, SOCK_RAW, ISDN_P_BASE);
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if (sock < 0) {
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fprintf(stderr, "Cannot open mISDN due to %s. (Does your Kernel support socket based mISDN?)\n", strerror(errno));
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exit(EXIT_FAILURE);
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}
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/* get number of stacks */
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ret = ioctl(sock, IMGETCOUNT, &count);
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if (ret < 0) {
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fprintf(stderr, "Cannot get number of mISDN devices. (ioctl IMGETCOUNT failed ret=%d)\n", ret);
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goto done;
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}
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if (count <= 0) {
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printf("Found no card. Please be sure to load card drivers.\n");
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goto done;
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}
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if (count <= port) {
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printf("Given port %d is out of range.\n", port);
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goto done;
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}
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devinfo.id = port;
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ret = ioctl(sock, IMGETDEVINFO, &devinfo);
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if (ret < 0) {
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fprintf(stderr, "Cannot get devinfo of mISDN devices. (ioctl IMGETDEVINFO failed ret=%d)\n", ret);
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goto done;
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}
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if (devinfo.Dprotocols & (1 << ISDN_P_TE_E1))
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pri = 1;
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if (devinfo.Dprotocols & (1 << ISDN_P_NT_E1))
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pri = 1;
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close(sock);
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/* open device */
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again:
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if (try == 0)
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sock = socket(PF_ISDN, SOCK_DGRAM, pri?ISDN_P_TE_E1:ISDN_P_TE_S0);
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else
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sock = socket(PF_ISDN, SOCK_DGRAM, pri?ISDN_P_NT_E1:ISDN_P_NT_S0);
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if (sock < 0) {
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fprintf(stderr, "Cannot open mISDN device due to %s.\n", strerror(errno));
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goto done;
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}
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addr.family = AF_ISDN;
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addr.dev = port;
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addr.channel = 0;
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ret = bind(sock, (struct sockaddr *)&addr, sizeof(addr));
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if (ret < 0 && errno == EBUSY && try == 0) {
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close(sock);
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try = 1;
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goto again;
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}
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if (ret < 0) {
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fprintf(stderr, "Bind failed due to %s.\n", strerror(errno));
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goto done;
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}
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ret = ioctl(sock, IMCTRLREQ, &crq);
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if (ret < 0) {
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fprintf(stderr, "IMCTRLREQ failed for port %d. Port seems not to be a layer1-over-ip device.\n", port);
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goto done;
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}
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/* output the port info */
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printf("Peer settings for port %d (%s)\n", port, devinfo.name);
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if (crq.p1 == 0)
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printf("No peer set.\n");
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else {
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printf("remote IP : %d.%d.%d.%d\n", (unsigned int)crq.p1 >> 24, (crq.p1 >> 16) & 0xff, (crq.p1 >> 8) & 0xff, crq.p1 & 0xff);
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printf("remote port: %d\n", crq.p2 & 0xffff);
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if (crq.p2 >> 16)
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printf("local port : %d\n", (unsigned int)crq.p2 >> 16);
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else
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printf("local port : set automatically\n");
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}
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done:
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close(sock);
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return(0);
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}
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