From: patthoyts Date: Mon, 22 Nov 2004 10:00:30 +0000 (+0000) Subject: * generic/udp_tcl.c: Added support for setting and retrieving the X-Git-Tag: tcludp-1_0_6~5 X-Git-Url: https://privyetmir.co.uk/gitweb.cgi?a=commitdiff_plain;h=487cb5d8097e263b6c68fbce287f5b4ada2f958a;p=tcludp * generic/udp_tcl.c: Added support for setting and retrieving the TTL option on the socket. The default is specified by the system but can be set for individual sockets. --- diff --git a/ChangeLog b/ChangeLog index df04053..c86949e 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,9 @@ +2004-11-22 Pat Thoyts + + * generic/udp_tcl.c: Added support for setting and retrieving the + TTL option on the socket. The default is specified by the system + but can be set for individual sockets. + 2004-02-09 Pat Thoyts * generic/udp_tcl.c: Followed up a suggestion in patch #794072 to diff --git a/generic/udp_tcl.c b/generic/udp_tcl.c index 1ef237b..8fc25f2 100644 --- a/generic/udp_tcl.c +++ b/generic/udp_tcl.c @@ -312,10 +312,13 @@ udpConf(ClientData clientData, Tcl_Interp *interp, struct ip_mreq mreq; struct sockaddr_in maddr; int sock; + char errmsg[] = + "udpConf fileId [-mcastadd] [-mcastdrop] groupaddr | " + "udpConf fileId remotehost remoteport | " + "udpConf fileId [-myport] [-remote] [-peer] [-broadcast] [-ttl]"; if (argc != 4 && argc != 3) { - result = "udpConf fileId [-mcastadd] [-mcastdrop] groupaddr | udpConf fileId remotehost remoteport | udpConf fileId [-myport] [-remote] [-peer] [-broadcast]"; - Tcl_SetResult (interp, result, NULL); + Tcl_SetResult (interp, errmsg, NULL); return TCL_ERROR; } chan = Tcl_GetChannel(interp, (char *)argv[1], NULL); @@ -348,8 +351,21 @@ udpConf(ClientData clientData, Tcl_Interp *interp, socklen_t optlen = sizeof(int); if (getsockopt(statePtr->sock, SOL_SOCKET, SO_BROADCAST, (char *)&tmp, &optlen)) { - sprintf(errBuf, "%s", "udp - setsockopt"); - UDPTRACE("UDP error - setsockopt\n"); + sprintf(errBuf, "%s", "udp - getsockopt"); + UDPTRACE("UDP error - getsockopt\n"); + Tcl_AppendResult(interp, errBuf, (char *)NULL); + return TCL_ERROR; + } else { + Tcl_SetObjResult(interp, Tcl_NewIntObj(tmp)); + return TCL_OK; + } + } else if (!strcmp(argv[2], "-ttl")) { + int tmp = 1; + socklen_t optlen = sizeof(int); + if (getsockopt(statePtr->sock, SOL_IP, IP_TTL, + (char *)&tmp, &optlen)) { + sprintf(errBuf, "%s", "udp - getsockopt"); + UDPTRACE("UDP error - getsockopt\n"); Tcl_AppendResult(interp, errBuf, (char *)NULL); return TCL_ERROR; } else { @@ -357,8 +373,7 @@ udpConf(ClientData clientData, Tcl_Interp *interp, return TCL_OK; } } else { - result = "udpConf fileId [-mcastadd] [-mcastdrop] groupaddr | udpConf fileId remotehost remoteport | udpConf fileId [-myport] [-remote] [-peer]"; - Tcl_SetResult (interp, result, NULL); + Tcl_SetResult (interp, errmsg, NULL); return TCL_ERROR; } return TCL_OK; @@ -422,6 +437,22 @@ udpConf(ClientData clientData, Tcl_Interp *interp, } } return r; + } else if (!strcmp(argv[2], "-ttl")) { + socklen_t optlen = sizeof(int); + int tmp = 0; + int r = Tcl_GetInt(interp, argv[3], &tmp); + if (r == TCL_OK) { + if (setsockopt(statePtr->sock, SOL_IP, IP_TTL, + (const char *)&tmp, optlen)) { + sprintf(errBuf, "%s", "udp - setsockopt"); + UDPTRACE("UDP error - setsockopt\n"); + Tcl_AppendResult(interp, errBuf, (char *)NULL); + r = TCL_ERROR; + } else { + Tcl_SetObjResult(interp, Tcl_NewIntObj(tmp)); + } + } + return r; } else { if (strlen(argv[2]) >= sizeof(statePtr->remotehost)) { result = "hostname too long"; @@ -432,8 +463,7 @@ udpConf(ClientData clientData, Tcl_Interp *interp, return udpGetService(interp, argv[3], &(statePtr->remoteport)); } } else { - result = "udpConf fileId [-mcastadd] [-mcastdrop] groupaddr | udpConf fileId remotehost remoteport | udpConf fileId [-myport] [-remote] [-peer]"; - Tcl_SetResult (interp, result, NULL); + Tcl_SetResult (interp, errmsg, NULL); return TCL_ERROR; } } @@ -1125,7 +1155,7 @@ udpGetOption(ClientData instanceData, Tcl_Interp *interp, CONST84 char *optionName, Tcl_DString *optionValue) { UdpState *statePtr = (UdpState *)instanceData; - CONST84 char * options = "myport remote peer mcastadd mcastdrop"; + CONST84 char * options = "myport remote peer mcastadd mcastdrop broadcast ttl"; int r = TCL_OK; if (optionName == NULL) { @@ -1142,6 +1172,8 @@ udpGetOption(ClientData instanceData, Tcl_Interp *interp, udpGetOption(instanceData, interp, "-mcastdrop", optionValue); Tcl_DStringAppend(optionValue, " -broadcast ", -1); udpGetOption(instanceData, interp, "-broadcast", optionValue); + Tcl_DStringAppend(optionValue, " -ttl ", -1); + udpGetOption(instanceData, interp, "-ttl", optionValue); } else { @@ -1179,14 +1211,28 @@ udpGetOption(ClientData instanceData, Tcl_Interp *interp, socklen_t optlen = sizeof(int); if (getsockopt(statePtr->sock, SOL_SOCKET, SO_BROADCAST, (char *)&tmp, &optlen)) { - UDPTRACE("UDP error - setsockopt\n"); - Tcl_SetResult(interp, "error in setsockopt", TCL_STATIC); + UDPTRACE("UDP error - getsockopt\n"); + Tcl_SetResult(interp, "error in getsockopt", TCL_STATIC); r = TCL_ERROR; } else { Tcl_DStringSetLength(&ds, TCL_INTEGER_SPACE); sprintf(Tcl_DStringValue(&ds), "%d", tmp); } + } else if (!strcmp("-ttl", optionName)) { + + unsigned int tmp = 0; + socklen_t optlen = sizeof(unsigned int); + if (getsockopt(statePtr->sock, SOL_IP, IP_TTL, + (char *)&tmp, &optlen)) { + UDPTRACE("UDP error - getsockopt"); + Tcl_SetResult(interp, "error in getsockopt", TCL_STATIC); + r = TCL_ERROR; + } else { + Tcl_DStringSetLength(&ds, TCL_INTEGER_SPACE); + sprintf(Tcl_DStringValue(&ds), "%u", tmp); + } + } else { r = Tcl_BadChannelOption(interp, optionName, options); } @@ -1214,7 +1260,7 @@ udpSetOption(ClientData instanceData, Tcl_Interp *interp, CONST84 char *optionName, CONST84 char *newValue) { UdpState *statePtr = (UdpState *)instanceData; - CONST84 char * options = "remote mcastadd mcastdrop broadcast"; + CONST84 char * options = "remote mcastadd mcastdrop broadcast ttl"; int r = TCL_OK; if (!strcmp("-remote", optionName)) { @@ -1267,6 +1313,21 @@ udpSetOption(ClientData instanceData, Tcl_Interp *interp, Tcl_SetObjResult(interp, Tcl_NewIntObj(tmp)); } } + } else if (!strcmp("-ttl", optionName)) { + + unsigned int tmp = 0; + r = Tcl_GetInt(interp, newValue, &tmp); + if (r == TCL_OK) { + if (setsockopt(statePtr->sock, SOL_IP, IP_TTL, + (const char *)&tmp, sizeof(unsigned int))) { + sprintf(errBuf, "udp - setsockopt ttl"); + UDPTRACE("UDP error - setsockopt\n"); + Tcl_SetObjResult(interp, Tcl_NewStringObj(errBuf, -1)); + r = TCL_ERROR; + } else { + Tcl_SetObjResult(interp, Tcl_NewIntObj(tmp)); + } + } } else {