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#ifndef __CONNECT_H__
#define __CONNECT_H__
#include <string.h>
#include <errno.h>
#include <signal.h>
#include <sys/wait.h>
#include "config.h"
#include <errno.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <sys/stat.h>
#ifndef SUN_LEN
#define SUN_LEN(ptr) ((socklen_t) (((struct sockaddr_un *) 0)->sun_path) \
+ strlen ((ptr)->sun_path))
#endif
#include "common.h"
#include "config.h"
#ifdef __cplusplus
typedef bool kgtk_bool;
#define KGTK_TRUE true
#define KGTK_FALSE false
#else
typedef gboolean kgtk_bool;
#define KGTK_TRUE TRUE
#define KGTK_FALSE FALSE
#endif
static int kdialogdSocket=-1;
/* From kdelibs/tdesu */
#ifdef KDIALOGD_APP
static int createSocketConnectionReal()
#else
static int createSocketConnection()
#endif
{
#ifdef KGTK_DEBUG
printf("KGTK::createSocketConnection A\n");
#endif
int sockfd=-1;
const char *sock=getSockName();
struct sockaddr_un addr;
if (access(sock, R_OK|W_OK))
{
#ifdef KGTK_DEBUG
printf("KGTK::createSocketConnection - Could not access socket, %s\n", sock);
#endif
return -1;
}
sockfd = socket(PF_UNIX, SOCK_STREAM, 0);
if (sockfd < 0)
{
#ifdef KGTK_DEBUG
printf("KGTK::createSocketConnection - Could not create socket, %d\n", errno);
#endif
return -1;
}
addr.sun_family = AF_UNIX;
strcpy(addr.sun_path, sock);
if (connect(sockfd, (struct sockaddr *) &addr, SUN_LEN(&addr)) < 0)
{
#ifdef KGTK_DEBUG
printf("KGTK::createSocketConnection - Could not connect socket, %d\n", errno);
#endif
close(sockfd);
return -1;
}
#if !defined(SO_PEERCRED) || !defined(HAVE_STRUCT_UCRED)
# if defined(HAVE_GETPEEREID)
{
uid_t euid;
gid_t egid;
/* Security: if socket exists, we must own it */
if (getpeereid(sockfd, &euid, &egid) == 0)
{
if (euid != getuid())
{
#ifdef KGTK_DEBUG
printf("KGTK::createSocketConnection - socket not owned by me! socket uid %d\n", euid);
#endif
close(sockfd);
return -1;
}
}
}
# else
# ifdef __GNUC__
# warning "Using sloppy security checks"
# endif
/* We check the owner of the socket after we have connected.
If the socket was somehow not ours an attacker will be able
to delete it after we connect but shouldn't be able to
create a socket that is owned by us. */
{
struct stat s;
if (lstat(sock, &s)!=0)
{
#ifdef KGTK_DEBUG
printf("KGTK::createSocketConnection - stat failed %s\n", sock);
#endif
close(sockfd);
return -1;
}
if (s.st_uid != getuid())
{
#ifdef KGTK_DEBUG
printf("KGTK::createSocketConnection - socket not owned by me! socket uid %d\n", s.st_uid);
#endif
close(sockfd);
return -1;
}
if (!S_ISSOCK(s.st_mode))
{
#ifdef KGTK_DEBUG
printf("KGTK::createSocketConnection - socket is not a socket %s\n", sock);
#endif
close(sockfd);
return -1;
}
}
# endif
#else
{
struct ucred cred;
socklen_t siz = sizeof(cred);
/* Security: if socket exists, we must own it */
if (getsockopt(sockfd, SOL_SOCKET, SO_PEERCRED, &cred, &siz) == 0)
{
if (cred.uid != getuid())
{
#ifdef KGTK_DEBUG
printf("KGTK::createSocketConnection - socket not owned by me! socket uid %d\n", cred.uid);
#endif
close(sockfd);
return -1;
}
}
}
#endif
#ifdef KGTK_DEBUG
printf("KGTK::createSocketConnection - sockfd:%d\n", sockfd);
#endif
return sockfd;
}
#ifdef KDIALOGD_APP
static int createSocketConnection()
{
int rv=-1,
tries=0;
do
{
if(-1==(rv=createSocketConnectionReal()))
usleep(10000);
}
while(-1==rv && ++tries<50);
if(-1==rv)
fprintf(stderr, "ERROR: Could not talk to KDialogD!!!\n");
return rv;
}
#endif
static int kdialogdPid=-1;
static kgtk_bool processIsRunning()
{
#ifdef KGTK_DEBUG
printf("KGTK::processIsRunning\n");
#endif
if(-1!=kdialogdPid && 0==kill(kdialogdPid, 0))
{
#ifdef KGTK_DEBUG
printf("KGTK::processIsRunning (%d) YES\n", kdialogdPid);
#endif
return KGTK_TRUE;
}
else
{
FILE *f=fopen(getPidFileName(), "r");
if(f)
{
int pid=0;
if(1==fscanf(f, "%d", &pid))
{
fclose(f);
if(-1!=kdialogdPid && kdialogdPid!=pid)
{
#ifdef KGTK_DEBUG
printf("KGTK::processIsRunning pid has changed from:%d to %d - need to reconnect\n", kdialogdPid, pid);
#endif
kdialogdPid=pid;
return KGTK_FALSE;
}
#ifdef KGTK_DEBUG
printf("KGTK::processIsRunning file has pid:%d\n", pid);
#endif
if(0==kill(pid, 0))
{
#ifdef KGTK_DEBUG
printf("KGTK::processIsRunning (file:%d) YES\n", pid);
#endif
kdialogdPid=pid;
return KGTK_TRUE;
}
kdialogdPid=-1; /* Process is not running! */
}
}
}
#ifdef KGTK_DEBUG
printf("KGTK::processIsRunning NO\n");
#endif
return KGTK_FALSE;
}
static void closeConnection()
{
#ifdef KGTK_DEBUG
printf("KGTK::closeConnection\n");
#endif
close(kdialogdSocket);
kdialogdSocket=-1;
}
/* Note: Calling 'fork' seems to mess things up with eclipse! */
#define KGTK_USE_SYSTEM_CALL
static kgtk_bool connectToKDialogD(const char *appName)
{
#ifdef KGTK_DEBUG
printf("KGTK::connectToKDialogD %s\n", appName ? appName : "<null>");
#endif
if(!processIsRunning())
closeConnection();
if(-1!=kdialogdSocket)
return KGTK_TRUE;
else
{
unsigned int slen=strlen(appName);
kgtk_bool rv=KGTK_TRUE;
if(slen)
slen++;
#ifdef KGTK_DEBUG
printf("KGTK::connectToKDialogD - start wrapper\n");
#endif
#ifdef KDIALOGD_APP
grabLock(5);
#ifdef KGTK_USE_SYSTEM_CALL
system("kdialogd-wrapper &");
#else
switch(fork())
{
case -1:
rv=KGTK_FALSE;
printf("ERROR: Could not start fork :-(\n");
break;
case 0:
execl(KDIALOGD_LOCATION"/kdialogd-wrapper", "kdialogd-wrapper", (char *)NULL);
break;
default:
{
int status=0;
wait(&status);
}
}
#endif
releaseLock();
#endif
if(!rv)
return rv;
rv=
#ifdef KDIALOGD_APP
grabLock(3)>0 &&
#else
0==system("dcop kded kded loadModule kdialogd") &&
#endif
-1!=(kdialogdSocket=createSocketConnection()) &&
writeBlock(kdialogdSocket, (char *)&slen, 4) &&
(0==slen || writeBlock(kdialogdSocket, appName, slen));
#ifdef KDIALOGD_APP
releaseLock();
#endif
return rv;
}
}
#endif
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