Xtransutil.c
资源名称:X264CODEC.rar [点击查看]
上传用户:lctgjx
上传日期:2022-06-04
资源大小:8887k
文件大小:15k
源码类别:
流媒体/Mpeg4/MP4
开发平台:
Visual C++
- /*
- Copyright 1993, 1994, 1998 The Open Group
- Permission to use, copy, modify, distribute, and sell this software and its
- documentation for any purpose is hereby granted without fee, provided that
- the above copyright notice appear in all copies and that both that
- copyright notice and this permission notice appear in supporting
- documentation.
- The above copyright notice and this permission notice shall be included
- in all copies or substantial portions of the Software.
- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
- IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
- OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
- ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
- OTHER DEALINGS IN THE SOFTWARE.
- Except as contained in this notice, the name of The Open Group shall
- not be used in advertising or otherwise to promote the sale, use or
- other dealings in this Software without prior written authorization
- from The Open Group.
- * Copyright 1993, 1994 NCR Corporation - Dayton, Ohio, USA
- *
- * All Rights Reserved
- *
- * Permission to use, copy, modify, and distribute this software and its
- * documentation for any purpose and without fee is hereby granted, provided
- * that the above copyright notice appear in all copies and that both that
- * copyright notice and this permission notice appear in supporting
- * documentation, and that the name NCR not be used in advertising
- * or publicity pertaining to distribution of the software without specific,
- * written prior permission. NCR makes no representations about the
- * suitability of this software for any purpose. It is provided "as is"
- * without express or implied warranty.
- *
- * NCRS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
- * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
- * NO EVENT SHALL NCR BE LIABLE FOR ANY SPECIAL, INDIRECT OR
- * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
- * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
- * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
- * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
- /*
- * These are some utility functions created for convenience or to provide
- * an interface that is similar to an existing interface. These are built
- * only using the Transport Independant API, and have no knowledge of
- * the internal implementation.
- */
- #ifdef XTHREADS
- #include <X11/Xthreads.h>
- #endif
- #ifdef WIN32
- #include <X11/Xlibint.h>
- #include <X11/Xwinsock.h>
- #endif
- #ifdef X11_t
- /*
- * These values come from X.h and Xauth.h, and MUST match them. Some
- * of these values are also defined by the ChangeHost protocol message.
- */
- #define FamilyInternet 0 /* IPv4 */
- #define FamilyDECnet 1
- #define FamilyChaos 2
- #define FamilyInternet6 6
- #define FamilyAmoeba 33
- #define FamilyLocalHost 252
- #define FamilyKrb5Principal 253
- #define FamilyNetname 254
- #define FamilyLocal 256
- #define FamilyWild 65535
- /*
- * TRANS(ConvertAddress) converts a sockaddr based address to an
- * X authorization based address. Some of this is defined as part of
- * the ChangeHost protocol. The rest is just done in a consistent manner.
- */
- int
- TRANS(ConvertAddress)(int *familyp, int *addrlenp, Xtransaddr **addrp)
- {
- PRMSG(2,"ConvertAddress(%d,%d,%x)n",*familyp,*addrlenp,*addrp);
- switch( *familyp )
- {
- #if defined(TCPCONN) || defined(STREAMSCONN)
- case AF_INET:
- {
- /*
- * Check for the BSD hack localhost address 127.0.0.1.
- * In this case, we are really FamilyLocal.
- */
- struct sockaddr_in saddr;
- int len = sizeof(saddr.sin_addr.s_addr);
- char *cp = (char *) &saddr.sin_addr.s_addr;
- memcpy (&saddr, *addrp, sizeof (struct sockaddr_in));
- if ((len == 4) && (cp[0] == 127) && (cp[1] == 0) &&
- (cp[2] == 0) && (cp[3] == 1))
- {
- *familyp=FamilyLocal;
- }
- else
- {
- *familyp=FamilyInternet;
- *addrlenp=len;
- memcpy(*addrp,&saddr.sin_addr,len);
- }
- break;
- }
- #if defined(IPv6) && defined(AF_INET6)
- case AF_INET6:
- {
- struct sockaddr_in6 saddr6;
- memcpy (&saddr6, *addrp, sizeof (struct sockaddr_in6));
- if (IN6_IS_ADDR_LOOPBACK(&saddr6.sin6_addr))
- {
- *familyp=FamilyLocal;
- }
- else if (IN6_IS_ADDR_V4MAPPED(&(saddr6.sin6_addr))) {
- char *cp = (char *) &saddr6.sin6_addr.s6_addr[12];
- if ((cp[0] == 127) && (cp[1] == 0) &&
- (cp[2] == 0) && (cp[3] == 1))
- {
- *familyp=FamilyLocal;
- }
- else
- {
- *familyp=FamilyInternet;
- *addrlenp = sizeof (struct in_addr);
- memcpy(*addrp,cp,*addrlenp);
- }
- }
- else
- {
- *familyp=FamilyInternet6;
- *addrlenp=sizeof(saddr6.sin6_addr);
- memcpy(*addrp,&saddr6.sin6_addr,sizeof(saddr6.sin6_addr));
- }
- break;
- }
- #endif /* IPv6 */
- #endif /* defined(TCPCONN) || defined(STREAMSCONN) */
- #if defined(UNIXCONN) || defined(LOCALCONN)
- case AF_UNIX:
- {
- *familyp=FamilyLocal;
- break;
- }
- #endif /* defined(UNIXCONN) || defined(LOCALCONN) */
- #if (defined(__SCO__) || defined(__UNIXWARE__)) && defined(LOCALCONN)
- case 0:
- {
- *familyp=FamilyLocal;
- break;
- }
- #endif
- default:
- PRMSG(1,"ConvertAddress: Unknown family type %dn",
- *familyp, 0,0 );
- return -1;
- }
- if (*familyp == FamilyLocal)
- {
- /*
- * In the case of a local connection, we need to get the
- * host name for authentication.
- */
- char hostnamebuf[256];
- int len = TRANS(GetHostname) (hostnamebuf, sizeof hostnamebuf);
- if (len > 0) {
- if (*addrp && *addrlenp < (len + 1))
- {
- xfree ((char *) *addrp);
- *addrp = NULL;
- }
- if (!*addrp)
- *addrp = (Xtransaddr *) xalloc (len + 1);
- if (*addrp) {
- strcpy ((char *) *addrp, hostnamebuf);
- *addrlenp = len;
- } else {
- *addrlenp = 0;
- }
- }
- else
- {
- if (*addrp)
- xfree ((char *) *addrp);
- *addrp = NULL;
- *addrlenp = 0;
- }
- }
- return 0;
- }
- #endif /* X11_t */
- #ifdef ICE_t
- #include <signal.h>
- char *
- TRANS(GetMyNetworkId) (XtransConnInfo ciptr)
- {
- int family = ciptr->family;
- char *addr = ciptr->addr;
- char hostnamebuf[256];
- char *networkId = NULL;
- char *transName = ciptr->transptr->TransName;
- if (gethostname (hostnamebuf, sizeof (hostnamebuf)) < 0)
- {
- return (NULL);
- }
- switch (family)
- {
- #if defined(UNIXCONN) || defined(STREAMSCONN) || defined(LOCALCONN)
- case AF_UNIX:
- {
- struct sockaddr_un *saddr = (struct sockaddr_un *) addr;
- networkId = (char *) xalloc (3 + strlen (transName) +
- strlen (hostnamebuf) + strlen (saddr->sun_path));
- sprintf (networkId, "%s/%s:%s", transName,
- hostnamebuf, saddr->sun_path);
- break;
- }
- #endif /* defined(UNIXCONN) || defined(STREAMSCONN) || defined(LOCALCONN) */
- #if defined(TCPCONN) || defined(STREAMSCONN)
- case AF_INET:
- #if defined(IPv6) && defined(AF_INET6)
- case AF_INET6:
- #endif
- {
- struct sockaddr_in *saddr = (struct sockaddr_in *) addr;
- #if defined(IPv6) && defined(AF_INET6)
- struct sockaddr_in6 *saddr6 = (struct sockaddr_in6 *) addr;
- #endif
- int portnum;
- char portnumbuf[10];
- #if defined(IPv6) && defined(AF_INET6)
- if (family == AF_INET6)
- portnum = ntohs (saddr6->sin6_port);
- else
- #endif
- portnum = ntohs (saddr->sin_port);
- snprintf (portnumbuf, sizeof(portnumbuf), "%d", portnum);
- networkId = (char *) xalloc (3 + strlen (transName) +
- strlen (hostnamebuf) + strlen (portnumbuf));
- sprintf (networkId, "%s/%s:%s", transName, hostnamebuf, portnumbuf);
- break;
- }
- #endif /* defined(TCPCONN) || defined(STREAMSCONN) */
- default:
- break;
- }
- return (networkId);
- }
- #include <setjmp.h>
- static jmp_buf env;
- #ifdef SIGALRM
- static volatile int nameserver_timedout = 0;
- static
- #ifdef RETSIGTYPE /* set by autoconf AC_TYPE_SIGNAL */
- RETSIGTYPE
- #else /* Imake */
- #ifdef SIGNALRETURNSINT
- int
- #else
- void
- #endif
- #endif
- nameserver_lost(int sig)
- {
- nameserver_timedout = 1;
- longjmp (env, -1);
- /* NOTREACHED */
- #ifdef SIGNALRETURNSINT
- return -1; /* for picky compilers */
- #endif
- }
- #endif /* SIGALARM */
- char *
- TRANS(GetPeerNetworkId) (XtransConnInfo ciptr)
- {
- int family = ciptr->family;
- char *peer_addr = ciptr->peeraddr;
- char *hostname;
- char addrbuf[256];
- const char *addr = NULL;
- switch (family)
- {
- case AF_UNSPEC:
- #if defined(UNIXCONN) || defined(STREAMSCONN) || defined(LOCALCONN)
- case AF_UNIX:
- {
- if (gethostname (addrbuf, sizeof (addrbuf)) == 0)
- addr = addrbuf;
- break;
- }
- #endif /* defined(UNIXCONN) || defined(STREAMSCONN) || defined(LOCALCONN) */
- #if defined(TCPCONN) || defined(STREAMSCONN)
- case AF_INET:
- #if defined(IPv6) && defined(AF_INET6)
- case AF_INET6:
- #endif
- {
- struct sockaddr_in *saddr = (struct sockaddr_in *) peer_addr;
- #if defined(IPv6) && defined(AF_INET6)
- struct sockaddr_in6 *saddr6 = (struct sockaddr_in6 *) peer_addr;
- #endif
- char *address;
- int addresslen;
- #ifdef XTHREADS_NEEDS_BYNAMEPARAMS
- _Xgethostbynameparams hparams;
- #endif
- struct hostent * volatile hostp = NULL;
- #if defined(IPv6) && defined(AF_INET6)
- if (family == AF_INET6)
- {
- address = (char *) &saddr6->sin6_addr;
- addresslen = sizeof (saddr6->sin6_addr);
- }
- else
- #endif
- {
- address = (char *) &saddr->sin_addr;
- addresslen = sizeof (saddr->sin_addr);
- }
- #ifdef SIGALRM
- /*
- * gethostbyaddr can take a LONG time if the host does not exist.
- * Assume that if it does not respond in NAMESERVER_TIMEOUT seconds
- * that something is wrong and do not make the user wait.
- * gethostbyaddr will continue after a signal, so we have to
- * jump out of it.
- */
- nameserver_timedout = 0;
- signal (SIGALRM, nameserver_lost);
- alarm (4);
- if (setjmp(env) == 0) {
- #endif
- hostp = _XGethostbyaddr (address, addresslen, family, hparams);
- #ifdef SIGALRM
- }
- alarm (0);
- #endif
- if (hostp != NULL)
- addr = hostp->h_name;
- else
- #if defined(IPv6) && defined(AF_INET6)
- addr = inet_ntop (family, address, addrbuf, sizeof (addrbuf));
- #else
- addr = inet_ntoa (saddr->sin_addr);
- #endif
- break;
- }
- #endif /* defined(TCPCONN) || defined(STREAMSCONN) */
- default:
- return (NULL);
- }
- hostname = (char *) xalloc (
- strlen (ciptr->transptr->TransName) + strlen (addr) + 2);
- strcpy (hostname, ciptr->transptr->TransName);
- strcat (hostname, "/");
- if (addr)
- strcat (hostname, addr);
- return (hostname);
- }
- #endif /* ICE_t */
- #if defined(WIN32) && defined(TCPCONN)
- int
- TRANS(WSAStartup) (void)
- {
- static WSADATA wsadata;
- PRMSG (2,"WSAStartup()n", 0, 0, 0);
- if (!wsadata.wVersion && WSAStartup(MAKEWORD(2,2), &wsadata))
- return 1;
- return 0;
- }
- #endif
- static int
- is_numeric (char *str)
- {
- int i;
- for (i = 0; i < (int) strlen (str); i++)
- if (!isdigit (str[i]))
- return (0);
- return (1);
- }
- #ifdef TRANS_SERVER
- #include <sys/types.h>
- #include <sys/stat.h>
- #include <errno.h>
- #if !defined(S_IFLNK) && !defined(S_ISLNK)
- #undef lstat
- #define lstat(a,b) stat(a,b)
- #endif
- #define FAIL_IF_NOMODE 1
- #define FAIL_IF_NOT_ROOT 2
- #define WARN_NO_ACCESS 4
- /*
- * We make the assumption that when the 'sticky' (t) bit is requested
- * it's not save if the directory has non-root ownership or the sticky
- * bit cannot be set and fail.
- */
- static int
- trans_mkdir(char *path, int mode)
- {
- struct stat buf;
- if (lstat(path, &buf) != 0) {
- if (errno != ENOENT) {
- PRMSG(1, "mkdir: ERROR: (l)stat failed for %s (%d)n",
- path, errno, 0);
- return -1;
- }
- /* Dir doesn't exist. Try to create it */
- #if !defined(WIN32) && !defined(__CYGWIN__)
- /*
- * 'sticky' bit requested: assume application makes
- * certain security implications. If effective user ID
- * is != 0: fail as we may not be able to meet them.
- */
- if (geteuid() != 0) {
- if (mode & 01000) {
- PRMSG(1, "mkdir: ERROR: euid != 0,"
- "directory %s will not be created.n",
- path, 0, 0);
- #ifdef FAIL_HARD
- return -1;
- #endif
- } else {
- PRMSG(1, "mkdir: Cannot create %s with root ownershipn",
- path, 0, 0);
- }
- }
- #endif
- #ifndef WIN32
- if (mkdir(path, mode) == 0) {
- if (chmod(path, mode)) {
- PRMSG(1, "mkdir: ERROR: Mode of %s should be set to %04on",
- path, mode, 0);
- #ifdef FAIL_HARD
- return -1;
- #endif
- }
- #else
- if (mkdir(path) == 0) {
- #endif
- } else {
- PRMSG(1, "mkdir: ERROR: Cannot create %sn",
- path, 0, 0);
- return -1;
- }
- return 0;
- } else {
- if (S_ISDIR(buf.st_mode)) {
- int updateOwner = 0;
- int updateMode = 0;
- int updatedOwner = 0;
- int updatedMode = 0;
- int status = 0;
- /* Check if the directory's ownership is OK. */
- if (buf.st_uid != 0)
- updateOwner = 1;
- /*
- * Check if the directory's mode is OK. An exact match isn't
- * required, just a mode that isn't more permissive than the
- * one requested.
- */
- if ((~mode) & 0077 & buf.st_mode)
- updateMode = 1;
- /*
- * If the directory is not writeable not everybody may
- * be able to create sockets. Therefore warn if mode
- * cannot be fixed.
- */
- if ((~buf.st_mode) & 0022 & mode) {
- updateMode = 1;
- status |= WARN_NO_ACCESS;
- }
- /*
- * If 'sticky' bit is requested fail if owner isn't root
- * as we assume the caller makes certain security implications
- */
- if (mode & 01000) {
- status |= FAIL_IF_NOT_ROOT;
- if (!(buf.st_mode & 01000)) {
- status |= FAIL_IF_NOMODE;
- updateMode = 1;
- }
- }
- #ifdef HAS_FCHOWN
- /*
- * If fchown(2) and fchmod(2) are available, try to correct the
- * directory's owner and mode. Otherwise it isn't safe to attempt
- * to do this.
- */
- if (updateMode || updateOwner) {
- int fd = -1;
- struct stat fbuf;
- if ((fd = open(path, O_RDONLY)) != -1) {
- if (fstat(fd, &fbuf) == -1) {
- PRMSG(1, "mkdir: ERROR: fstat failed for %s (%d)n",
- path, errno, 0);
- return -1;
- }
- /*
- * Verify that we've opened the same directory as was
- * checked above.
- */
- if (!S_ISDIR(fbuf.st_mode) ||
- buf.st_dev != fbuf.st_dev ||
- buf.st_ino != fbuf.st_ino) {
- PRMSG(1, "mkdir: ERROR: inode for %s changedn",
- path, 0, 0);
- return -1;
- }
- if (updateOwner && fchown(fd, 0, 0) == 0)
- updatedOwner = 1;
- if (updateMode && fchmod(fd, mode) == 0)
- updatedMode = 1;
- close(fd);
- }
- }
- #endif
- if (updateOwner && !updatedOwner) {
- #ifdef FAIL_HARD
- if (status & FAIL_IF_NOT_ROOT) {
- PRMSG(1, "mkdir: ERROR: Owner of %s must be set to rootn",
- path, 0, 0);
- return -1;
- }
- #endif
- #if !defined(__APPLE_CC__) && !defined(__CYGWIN__)
- PRMSG(1, "mkdir: Owner of %s should be set to rootn",
- path, 0, 0);
- #endif
- }
- if (updateMode && !updatedMode) {
- #ifdef FAIL_HARD
- if (status & FAIL_IF_NOMODE) {
- PRMSG(1, "mkdir: ERROR: Mode of %s must be set to %04on",
- path, mode, 0);
- return -1;
- }
- #endif
- PRMSG(1, "mkdir: Mode of %s should be set to %04on",
- path, mode, 0);
- if (status & WARN_NO_ACCESS) {
- PRMSG(1, "mkdir: this may cause subsequent errorsn",
- 0, 0, 0);
- }
- }
- return 0;
- }
- return -1;
- }
- /* In all other cases, fail */
- return -1;
- }
- #endif /* TRANS_SERVER */