/*
- * Copyright (C) 2005-2009 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 2005-2010 Andre Noll <maan@systemlinux.org>
*
* Licensed under the GPL v2. For licencing details see COPYING.
*/
if (passive && setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR,
&on, sizeof(on)) == -1) {
rc = errno;
+ close(sockfd);
PARA_ERROR_LOG("can not set SO_REUSEADDR: %s\n",
strerror(rc));
return -ERRNO_TO_PARA_ERROR(rc);
}
/**
- * Probe the list of DCCP CCIDs supported locally by the host.
- * \param ccids Array to be filled in.
- * \param nccids Length of \a ccids.
- * \return Pointer to \a ccids, NULL on failure.
+ * Probe the list of DCCP CCIDs configured on this host.
+ * \param ccid_array Pointer to return statically allocated array in.
+ * \return Number of elements returned in \a ccid_array or error.
*
* NB: This feature is only available on Linux > 2.6.30; on older kernels
* ENOPROTOOPT ("Protocol not available") will be returned.
*/
-const uint8_t *dccp_available_ccids(uint8_t *ccids, uint8_t *nccids)
+int dccp_available_ccids(uint8_t **ccid_array)
{
- int fd = makesock(IPPROTO_DCCP, 1, NULL, 0, NULL);
+ static uint8_t ccids[DCCP_MAX_HOST_CCIDS];
+ socklen_t nccids = sizeof(ccids);
+ int ret, fd;
- if (fd < 0)
- return NULL;
+ ret = fd = makesock(IPPROTO_DCCP, 1, NULL, 0, NULL);
+ if (ret < 0)
+ return ret;
if (getsockopt(fd, SOL_DCCP, DCCP_SOCKOPT_AVAILABLE_CCIDS,
- ccids, (socklen_t *)nccids) < 0) {
+ ccids, &nccids) < 0) {
+ ret = errno;
+ close(fd);
PARA_ERROR_LOG("No DCCP_SOCKOPT_AVAILABLE_CCIDS: %s\n",
- strerror(errno));
- *nccids = 0;
+ strerror(ret));
+ return -ERRNO_TO_PARA_ERROR(ret);
}
- close(fd);
- return *nccids ? ccids : NULL;
+ close(fd);
+ *ccid_array = ccids;
+ return nccids;
}
/**
return result;
}
#endif /* HAVE_UCRED */
-
-/**
- * Receive a buffer and check for a pattern.
- *
- * \param fd The file descriptor to receive from.
- * \param pattern The expected pattern.
- * \param bufsize The size of the internal buffer.
- *
- * \return Positive if \a pattern was received, negative otherwise.
- *
- * This function tries to receive at most \a bufsize bytes from file descriptor
- * \a fd. If at least \p strlen(\a pattern) bytes were received, the beginning
- * of the received buffer is compared with \a pattern, ignoring case.
- *
- * \sa recv_buffer(), \sa strncasecmp(3).
- */
-int recv_pattern(int fd, const char *pattern, size_t bufsize)
-{
- size_t len = strlen(pattern);
- char *buf = para_malloc(bufsize + 1);
- int ret = -E_RECV_PATTERN, n = recv_buffer(fd, buf, bufsize + 1);
-
- if (n < len)
- goto out;
- if (strncasecmp(buf, pattern, len))
- goto out;
- ret = 1;
-out:
- if (ret < 0) {
- PARA_NOTICE_LOG("did not receive pattern '%s'\n", pattern);
- if (n > 0)
- PARA_NOTICE_LOG("recvd %d bytes: %s\n", n, buf);
- else if (n < 0)
- PARA_NOTICE_LOG("%s\n", para_strerror(-n));
- }
- free(buf);
- return ret;
-}