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/*
* sendmsg.c -- send a message to a twin client
*
* This program is placed in the public domain.
*
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include "Tw/Tw.h"
#include "Tw/Twerrno.h"
#include "version.h"
byte *argv0;
void Usage(void) {
fprintf(stderr, "Usage: %s [-msgport=]<MsgPort> [OPTIONS]\n"
"Currently known options:\n"
" -h, -help display this help and exit\n"
" -V, -version output version information and exit\n"
" -control send a MSG_USER_CONTROL message (default)\n"
" -clientmsg send a MSG_USER_CLIENTMSG message\n"
" [-code=]<Code> set the message code (default is `open')\n"
" [-data=]<Data> set the message data\n"
"Currently known codes for control messages are:\n"
" quit (0), restart (1), open (2)\n",
argv0);
}
void ShowVersion(void) {
fputs("twsendmsg " TWIN_VERSION_STR "\n", stdout);
}
TW_DECL_MAGIC(sendmsg_magic);
int main(int argc, char *argv[]) {
byte *MsgPortName = NULL, *CodeName = NULL, *Data = NULL;
udat Type = TW_MSG_USER_CONTROL, Code = TW_MSG_CONTROL_OPEN, DataLen = 0;
tmsgport MsgPort;
tmsg Msg;
uldat err;
argv0 = argv[0];
if (argc == 2) {
if (!strcmp(argv[1], "-h") || !strcmp(argv[1], "-help")) {
Usage();
return 0;
} else if (!strcmp(argv[1], "-V") || !strcmp(argv[1], "-version")) {
ShowVersion();
return 0;
}
}
if (TwCheckMagic(sendmsg_magic) && TwOpen(NULL)) do {
while (++argv, --argc) {
if (!strncmp(*argv, "-msgport=", 9))
MsgPortName = *argv + 9;
else if (!strcmp(*argv, "-control"))
Type = TW_MSG_USER_CONTROL;
else if (!strcmp(*argv, "-clientmsg"))
Type = TW_MSG_USER_CLIENTMSG;
else if (!strncmp(*argv, "-code=", 6))
CodeName = *argv + 6;
else if (!strncmp(*argv, "-data=", 6))
Data = *argv + 6;
else if (!MsgPortName)
MsgPortName = *argv;
else if (!CodeName)
CodeName = *argv;
else if (!Data)
Data = *argv;
}
if (CodeName) {
if (!strcmp(CodeName, "quit"))
Code = TW_MSG_CONTROL_QUIT;
else if (!strcmp(CodeName, "restart"))
Code = TW_MSG_CONTROL_RESTART;
else if (!strcmp(CodeName, "open"))
Code = TW_MSG_CONTROL_OPEN;
else {
fprintf(stderr, "%s: argument `%s' not recognized\n"
"\ttry `%s -help' for usage summary.\n", argv0, CodeName, argv0);
return 1;
}
}
if (Data)
DataLen = strlen(Data);
if (MsgPortName) {
if ((MsgPort = TwFindMsgPort(TW_NOID, strlen(MsgPortName), MsgPortName))) {
if (Type == TW_MSG_USER_CONTROL) {
tevent_control EventC;
if ((Msg = TwCreateMsg(TW_MSG_USER_CONTROL,
DataLen + sizeof(*EventC)))) {
EventC = &Msg->Event.EventControl;
EventC->W = TW_NOID;
EventC->Code = Code;
EventC->Len = DataLen;
EventC->X = 0;
EventC->Y = 0;
if (DataLen)
memcpy(EventC->Data, Data, DataLen);
if (TwSendMsg(MsgPort, Msg))
return 0;
}
} else {
tevent_clientmsg EventC;
if ((Msg = TwCreateMsg(TW_MSG_USER_CLIENTMSG,
DataLen + sizeof(*EventC)))) {
EventC->W = TW_NOID;
EventC->Code = Code;
EventC->Len = DataLen;
if (DataLen)
memcpy(EventC->Data, Data, DataLen);
if (TwSendMsg(MsgPort, Msg))
return 0;
}
}
} else {
fprintf(stderr, "%s: MsgPort `%s' not found on server.\n", argv0, MsgPortName);
return 1;
}
} else {
Usage();
return 1;
}
} while (0);
err = TwErrno;
fprintf(stderr, "%s: libTw error: %s%s\n", argv0,
TwStrError(err), TwStrErrorDetail(err, TwErrnoDetail));
return 1;
}
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