add ibus supprot
This commit is contained in:
585
ibus.c
Normal file
585
ibus.c
Normal file
@@ -0,0 +1,585 @@
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#include "dat.h"
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#include "fn.h"
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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 <sys/stat.h>
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#include <poll.h>
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#include <dbus/dbus.h>
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enum
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{
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Maxwatches = 32,
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Maxconns = 16,
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Relmask = 1<<30,
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};
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typedef struct Watch Watch;
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struct Watch
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{
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DBusWatch *w;
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};
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static Watch watches[Maxwatches];
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static int nwatches;
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static DBusConnection *conns[Maxconns];
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static int nconns;
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static DBusServer *srv;
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static char addrfile[256];
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static int icctr;
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static int busctr;
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static DBusHandlerResult onmsg(DBusConnection*, DBusMessage*, void*);
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static void
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unlinkaddr(void)
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{
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if(addrfile[0] != '\0')
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unlink(addrfile);
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}
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static void
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machineid(char *buf, int sz)
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{
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int fd, n;
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fd = open("/etc/machine-id", 0);
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if(fd < 0)
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fd = open("/var/lib/dbus/machine-id", 0);
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if(fd < 0){
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buf[0] = '\0';
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return;
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}
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n = read(fd, buf, sz - 1);
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close(fd);
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if(n < 0) n = 0;
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buf[n] = '\0';
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while(n > 0 && (buf[n-1] == '\n' || buf[n-1] == '\r'))
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buf[--n] = '\0';
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}
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static void
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xdisplay(char *host, int hsz, char *num, int nsz)
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{
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char *d, *colon, *dot, *p;
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int n;
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strncpy(host, "unix", hsz);
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host[hsz-1] = '\0';
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strncpy(num, "0", nsz);
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num[nsz-1] = '\0';
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d = getenv("DISPLAY");
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if(d == nil || d[0] == '\0')
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return;
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colon = strchr(d, ':');
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if(colon == nil)
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return;
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if(colon > d){
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n = colon - d;
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if(n >= hsz) n = hsz - 1;
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memcpy(host, d, n);
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host[n] = '\0';
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}
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p = colon + 1;
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dot = strchr(p, '.');
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n = dot ? dot - p : (int)strlen(p);
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if(n >= nsz) n = nsz - 1;
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memcpy(num, p, n);
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num[n] = '\0';
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}
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static int
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buildaddrpath(char *buf, int sz)
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{
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char mid[64], host[64], num[8], *cfg, *home;
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struct stat st;
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char dir[256];
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machineid(mid, sizeof(mid));
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if(mid[0] == '\0')
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return -1;
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xdisplay(host, sizeof(host), num, sizeof(num));
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cfg = getenv("XDG_CONFIG_HOME");
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if(cfg != nil && cfg[0] != '\0')
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snprintf(dir, sizeof(dir), "%s/ibus/bus", cfg);
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else{
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home = getenv("HOME");
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if(home == nil)
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return -1;
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snprintf(dir, sizeof(dir), "%s/.config/ibus/bus", home);
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}
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if(stat(dir, &st) < 0){
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char tmp[256];
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char *p;
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strncpy(tmp, dir, sizeof(tmp));
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tmp[sizeof(tmp)-1] = '\0';
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for(p = tmp+1; *p; p++)
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if(*p == '/'){
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*p = '\0';
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mkdir(tmp, 0700);
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*p = '/';
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}
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mkdir(tmp, 0700);
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}
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snprintf(buf, sz, "%s/%s-%s-%s", dir, mid, host, num);
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return 0;
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}
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static int
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writeaddr(char *path, char *addr)
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{
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FILE *fp;
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fp = fopen(path, "w");
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if(fp == nil)
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return -1;
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fprintf(fp, "IBUS_ADDRESS=%s\n", addr);
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fprintf(fp, "IBUS_DAEMON_PID=%d\n", (int)getpid());
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fclose(fp);
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chmod(path, 0600);
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return 0;
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}
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static dbus_bool_t
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addwatch(DBusWatch *w, void *_)
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{
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int i;
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USED(_);
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for(i = 0; i < nwatches; i++)
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if(watches[i].w == nil){
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watches[i].w = w;
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return TRUE;
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}
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if(nwatches >= Maxwatches)
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return FALSE;
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watches[nwatches++].w = w;
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return TRUE;
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}
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static void
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removewatch(DBusWatch *w, void *_)
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{
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int i;
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USED(_);
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for(i = 0; i < nwatches; i++)
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if(watches[i].w == w){
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watches[i].w = nil;
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return;
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}
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}
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static void
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togglewatch(DBusWatch *w, void *_)
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{
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USED(w);
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USED(_);
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}
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static u32int
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kget(u32int sym)
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{
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if(sym >= 0xff00 && sym <= 0xffff)
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return Kspec + (sym - 0xff00);
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return sym;
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}
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static u32int
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mget(u32int state)
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{
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u32int m;
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m = 0;
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if(state & (1<<0)) m |= Mshift;
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if(state & (1<<2)) m |= Mctrl;
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if(state & (1<<3)) m |= Malt;
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if(state & (1<<6)) m |= Msuper;
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return m;
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}
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static int
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sendkey(u32int ks, u32int mod, char *out, int sz, int *eaten)
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{
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Keyreq kr;
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int p[2];
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uchar hdr[2];
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int n;
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*eaten = 0;
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out[0] = '\0';
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if(pipe(p) < 0)
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return 0;
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kr.fd = p[1];
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kr.ks = ks;
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kr.mod = mod;
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chansend(keyc, &kr);
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if(read(p[0], hdr, 2) != 2){
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close(p[0]);
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close(p[1]);
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return 0;
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}
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*eaten = hdr[0];
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n = hdr[1];
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if(n > 0 && n < sz){
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if(read(p[0], out, n) != n)
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n = 0;
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}else
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n = 0;
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out[n] = '\0';
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close(p[0]);
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close(p[1]);
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return n;
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}
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static void
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sendreset(void)
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{
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char buf[64];
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int eaten;
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sendkey(Kesc, 0, buf, sizeof(buf), &eaten);
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}
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static void
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appendibustext(DBusMessageIter *it, const char *s)
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{
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DBusMessageIter v, st, attach, alv, ali, attr, alist;
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const char *name = "IBusText";
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const char *aname = "IBusAttrList";
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dbus_message_iter_open_container(it, DBUS_TYPE_VARIANT, "(sa{sv}sv)", &v);
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dbus_message_iter_open_container(&v, DBUS_TYPE_STRUCT, nil, &st);
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dbus_message_iter_append_basic(&st, DBUS_TYPE_STRING, &name);
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dbus_message_iter_open_container(&st, DBUS_TYPE_ARRAY, "{sv}", &attach);
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dbus_message_iter_close_container(&st, &attach);
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dbus_message_iter_append_basic(&st, DBUS_TYPE_STRING, &s);
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dbus_message_iter_open_container(&st, DBUS_TYPE_VARIANT, "(sa{sv}av)", &alv);
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dbus_message_iter_open_container(&alv, DBUS_TYPE_STRUCT, nil, &ali);
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dbus_message_iter_append_basic(&ali, DBUS_TYPE_STRING, &aname);
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dbus_message_iter_open_container(&ali, DBUS_TYPE_ARRAY, "{sv}", &attr);
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dbus_message_iter_close_container(&ali, &attr);
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dbus_message_iter_open_container(&ali, DBUS_TYPE_ARRAY, "v", &alist);
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dbus_message_iter_close_container(&ali, &alist);
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dbus_message_iter_close_container(&alv, &ali);
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dbus_message_iter_close_container(&st, &alv);
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dbus_message_iter_close_container(&v, &st);
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dbus_message_iter_close_container(it, &v);
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}
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static void
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emitcommit(DBusConnection *c, const char *path, const char *text)
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{
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DBusMessage *sig;
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DBusMessageIter it;
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sig = dbus_message_new_signal(path, "org.freedesktop.IBus.InputContext", "CommitText");
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if(sig == nil)
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return;
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dbus_message_iter_init_append(sig, &it);
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appendibustext(&it, text);
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dbus_connection_send(c, sig, nil);
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dbus_message_unref(sig);
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}
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static DBusHandlerResult
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handlehello(DBusConnection *c, DBusMessage *m)
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{
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DBusMessage *r;
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char name[32];
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const char *np;
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busctr++;
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snprintf(name, sizeof(name), ":1.%d", busctr);
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np = name;
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r = dbus_message_new_method_return(m);
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dbus_message_append_args(r, DBUS_TYPE_STRING, &np, DBUS_TYPE_INVALID);
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dbus_connection_send(c, r, nil);
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dbus_message_unref(r);
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return DBUS_HANDLER_RESULT_HANDLED;
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}
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static DBusHandlerResult
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handlecreate(DBusConnection *c, DBusMessage *m)
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{
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DBusMessage *r;
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char path[64];
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const char *pp;
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icctr++;
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snprintf(path, sizeof(path), "/org/freedesktop/IBus/InputContext_%d", icctr);
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pp = path;
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r = dbus_message_new_method_return(m);
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dbus_message_append_args(r, DBUS_TYPE_OBJECT_PATH, &pp, DBUS_TYPE_INVALID);
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dbus_connection_send(c, r, nil);
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dbus_message_unref(r);
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return DBUS_HANDLER_RESULT_HANDLED;
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}
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static DBusHandlerResult
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handlekey(DBusConnection *c, DBusMessage *m)
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{
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DBusMessage *r;
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DBusError err;
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dbus_uint32_t sym, code, state;
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char commit[256];
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int eaten, n;
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dbus_bool_t b;
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u32int ks, mod;
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dbus_error_init(&err);
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if(!dbus_message_get_args(m, &err,
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DBUS_TYPE_UINT32, &sym,
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DBUS_TYPE_UINT32, &code,
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DBUS_TYPE_UINT32, &state,
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DBUS_TYPE_INVALID)){
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dbus_error_free(&err);
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return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
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}
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USED(code);
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if(state & Relmask){
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r = dbus_message_new_method_return(m);
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b = FALSE;
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dbus_message_append_args(r, DBUS_TYPE_BOOLEAN, &b, DBUS_TYPE_INVALID);
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dbus_connection_send(c, r, nil);
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dbus_message_unref(r);
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return DBUS_HANDLER_RESULT_HANDLED;
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}
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ks = kget(sym);
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mod = mget(state);
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n = sendkey(ks, mod, commit, sizeof(commit), &eaten);
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if(n > 0)
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emitcommit(c, dbus_message_get_path(m), commit);
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r = dbus_message_new_method_return(m);
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b = eaten ? TRUE : FALSE;
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dbus_message_append_args(r, DBUS_TYPE_BOOLEAN, &b, DBUS_TYPE_INVALID);
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dbus_connection_send(c, r, nil);
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dbus_message_unref(r);
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return DBUS_HANDLER_RESULT_HANDLED;
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}
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static DBusHandlerResult
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handlenoop(DBusConnection *c, DBusMessage *m)
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{
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DBusMessage *r;
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r = dbus_message_new_method_return(m);
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dbus_connection_send(c, r, nil);
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dbus_message_unref(r);
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return DBUS_HANDLER_RESULT_HANDLED;
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}
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static DBusHandlerResult
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handlereset(DBusConnection *c, DBusMessage *m)
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{
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sendreset();
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return handlenoop(c, m);
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}
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static const char introspectxml[] =
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"<!DOCTYPE node PUBLIC \"-//freedesktop//DTD D-BUS Object Introspection 1.0//EN\"\n"
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" \"http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd\">\n"
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"<node>\n"
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" <interface name=\"org.freedesktop.IBus\">\n"
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" <method name=\"CreateInputContext\">\n"
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" <arg direction=\"in\" type=\"s\"/>\n"
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" <arg direction=\"out\" type=\"o\"/>\n"
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" </method>\n"
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" </interface>\n"
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" <interface name=\"org.freedesktop.IBus.InputContext\">\n"
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" <method name=\"ProcessKeyEvent\">\n"
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" <arg direction=\"in\" type=\"u\"/>\n"
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" <arg direction=\"in\" type=\"u\"/>\n"
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" <arg direction=\"in\" type=\"u\"/>\n"
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" <arg direction=\"out\" type=\"b\"/>\n"
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" </method>\n"
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" <method name=\"FocusIn\"/>\n"
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" <method name=\"FocusOut\"/>\n"
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" <method name=\"Reset\"/>\n"
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" <method name=\"Destroy\"/>\n"
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" <method name=\"SetCapabilities\"><arg direction=\"in\" type=\"u\"/></method>\n"
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" <method name=\"SetCursorLocation\">"
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"<arg direction=\"in\" type=\"i\"/><arg direction=\"in\" type=\"i\"/>"
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"<arg direction=\"in\" type=\"i\"/><arg direction=\"in\" type=\"i\"/></method>\n"
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" <method name=\"SetEngine\"><arg direction=\"in\" type=\"s\"/></method>\n"
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" <signal name=\"CommitText\"><arg type=\"v\"/></signal>\n"
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" </interface>\n"
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"</node>\n";
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static DBusHandlerResult
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handleintrospect(DBusConnection *c, DBusMessage *m)
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{
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DBusMessage *r;
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const char *xml = introspectxml;
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r = dbus_message_new_method_return(m);
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dbus_message_append_args(r, DBUS_TYPE_STRING, &xml, DBUS_TYPE_INVALID);
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dbus_connection_send(c, r, nil);
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dbus_message_unref(r);
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return DBUS_HANDLER_RESULT_HANDLED;
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}
|
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static DBusHandlerResult
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onmsg(DBusConnection *c, DBusMessage *m, void *_)
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||||
{
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const char *iface, *member, *path;
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USED(_);
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if(dbus_message_get_type(m) != DBUS_MESSAGE_TYPE_METHOD_CALL)
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return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
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iface = dbus_message_get_interface(m);
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member = dbus_message_get_member(m);
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path = dbus_message_get_path(m);
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if(iface == nil || member == nil || path == nil)
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return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
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if(strcmp(iface, "org.freedesktop.DBus.Introspectable") == 0
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&& strcmp(member, "Introspect") == 0)
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return handleintrospect(c, m);
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if(strcmp(iface, "org.freedesktop.DBus") == 0){
|
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if(strcmp(member, "Hello") == 0)
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return handlehello(c, m);
|
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if(strcmp(member, "AddMatch") == 0
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|| strcmp(member, "RemoveMatch") == 0)
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return handlenoop(c, m);
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}
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if(strcmp(iface, "org.freedesktop.IBus") == 0){
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if(strcmp(member, "CreateInputContext") == 0)
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return handlecreate(c, m);
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}
|
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if(strcmp(iface, "org.freedesktop.IBus.InputContext") == 0){
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if(strcmp(member, "ProcessKeyEvent") == 0)
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return handlekey(c, m);
|
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if(strcmp(member, "FocusOut") == 0
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||||
|| strcmp(member, "Reset") == 0)
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return handlereset(c, m);
|
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if(strcmp(member, "FocusIn") == 0
|
||||
|| strcmp(member, "Destroy") == 0
|
||||
|| strcmp(member, "SetCapabilities") == 0
|
||||
|| strcmp(member, "SetCursorLocation") == 0
|
||||
|| strcmp(member, "SetEngine") == 0)
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return handlenoop(c, m);
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}
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return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
|
||||
}
|
||||
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||||
static void
|
||||
newconn(DBusServer *s, DBusConnection *c, void *_)
|
||||
{
|
||||
DBusObjectPathVTable vt;
|
||||
|
||||
USED(s);
|
||||
USED(_);
|
||||
if(nconns >= Maxconns)
|
||||
return;
|
||||
dbus_connection_ref(c);
|
||||
dbus_connection_set_watch_functions(c, addwatch, removewatch, togglewatch, nil, nil);
|
||||
memset(&vt, 0, sizeof(vt));
|
||||
vt.message_function = onmsg;
|
||||
dbus_connection_register_fallback(c, "/", &vt, nil);
|
||||
conns[nconns++] = c;
|
||||
}
|
||||
|
||||
static void
|
||||
pruneconns(void)
|
||||
{
|
||||
int i, j;
|
||||
|
||||
j = 0;
|
||||
for(i = 0; i < nconns; i++){
|
||||
if(dbus_connection_get_is_connected(conns[i])){
|
||||
conns[j++] = conns[i];
|
||||
continue;
|
||||
}
|
||||
dbus_connection_unref(conns[i]);
|
||||
}
|
||||
nconns = j;
|
||||
}
|
||||
|
||||
static int
|
||||
ibusinit(void)
|
||||
{
|
||||
DBusError err;
|
||||
char addr[128];
|
||||
char *full;
|
||||
|
||||
if(buildaddrpath(addrfile, sizeof(addrfile)) < 0){
|
||||
fprintf(stderr, "strans: ibus: cannot build address path\n");
|
||||
return -1;
|
||||
}
|
||||
unlink(addrfile);
|
||||
snprintf(addr, sizeof(addr), "unix:abstract=strans-%d", (int)getpid());
|
||||
dbus_error_init(&err);
|
||||
srv = dbus_server_listen(addr, &err);
|
||||
if(srv == nil){
|
||||
fprintf(stderr, "strans: ibus: listen: %s\n", err.message);
|
||||
dbus_error_free(&err);
|
||||
addrfile[0] = '\0';
|
||||
return -1;
|
||||
}
|
||||
dbus_server_set_new_connection_function(srv, newconn, nil, nil);
|
||||
dbus_server_set_watch_functions(srv, addwatch, removewatch, togglewatch, nil, nil);
|
||||
full = dbus_server_get_address(srv);
|
||||
if(writeaddr(addrfile, full) < 0){
|
||||
fprintf(stderr, "strans: ibus: cannot write %s\n", addrfile);
|
||||
dbus_free(full);
|
||||
dbus_server_disconnect(srv);
|
||||
dbus_server_unref(srv);
|
||||
srv = nil;
|
||||
addrfile[0] = '\0';
|
||||
return -1;
|
||||
}
|
||||
dbus_free(full);
|
||||
atexit(unlinkaddr);
|
||||
return 0;
|
||||
}
|
||||
|
||||
void
|
||||
ibusthread(void *_)
|
||||
{
|
||||
struct pollfd pfds[Maxwatches];
|
||||
int wi[Maxwatches];
|
||||
int i, n, rv;
|
||||
unsigned int f;
|
||||
|
||||
USED(_);
|
||||
threadsetname("ibus");
|
||||
if(ibusinit() < 0)
|
||||
return;
|
||||
for(;;){
|
||||
n = 0;
|
||||
for(i = 0; i < nwatches && n < Maxwatches; i++){
|
||||
if(watches[i].w == nil)
|
||||
continue;
|
||||
if(!dbus_watch_get_enabled(watches[i].w))
|
||||
continue;
|
||||
pfds[n].fd = dbus_watch_get_unix_fd(watches[i].w);
|
||||
pfds[n].events = 0;
|
||||
f = dbus_watch_get_flags(watches[i].w);
|
||||
if(f & DBUS_WATCH_READABLE) pfds[n].events |= POLLIN;
|
||||
if(f & DBUS_WATCH_WRITABLE) pfds[n].events |= POLLOUT;
|
||||
wi[n] = i;
|
||||
n++;
|
||||
}
|
||||
rv = poll(pfds, n, 200);
|
||||
if(rv < 0)
|
||||
continue;
|
||||
for(i = 0; i < n; i++){
|
||||
if(pfds[i].revents == 0)
|
||||
continue;
|
||||
if(watches[wi[i]].w == nil)
|
||||
continue;
|
||||
f = 0;
|
||||
if(pfds[i].revents & POLLIN) f |= DBUS_WATCH_READABLE;
|
||||
if(pfds[i].revents & POLLOUT) f |= DBUS_WATCH_WRITABLE;
|
||||
if(pfds[i].revents & POLLHUP) f |= DBUS_WATCH_HANGUP;
|
||||
if(pfds[i].revents & POLLERR) f |= DBUS_WATCH_ERROR;
|
||||
dbus_watch_handle(watches[wi[i]].w, f);
|
||||
}
|
||||
for(i = 0; i < nconns; i++)
|
||||
while(dbus_connection_dispatch(conns[i]) == DBUS_DISPATCH_DATA_REMAINS)
|
||||
;
|
||||
pruneconns();
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user