Adding upstream version 1.47.0.upstream/1.47.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 682 insertions, 0 deletions

diff --git a/lib/uuid/gen_uuid.c b/lib/uuid/gen_uuid.c
new file mode 100644
index 0000000..2f02886
--- /dev/null
+++ b/lib/uuid/gen_uuid.c
@@ -0,0 +1,682 @@
+/*
+ * gen_uuid.c --- generate a DCE-compatible uuid
+ *
+ * Copyright (C) 1996, 1997, 1998, 1999 Theodore Ts'o.
+ *
+ * %Begin-Header%
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, and the entire permission notice in its entirety,
+ *    including the disclaimer of warranties.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote
+ *    products derived from this software without specific prior
+ *    written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
+ * WHICH ARE HEREBY DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
+ * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
+ * USE OF THIS SOFTWARE, EVEN IF NOT ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ * %End-Header%
+ */
+
+/*
+ * Force inclusion of SVID stuff since we need it if we're compiling in
+ * gcc-wall wall mode
+ */
+#define _SVID_SOURCE
+#define _DEFAULT_SOURCE	  /* since glibc 2.20 _SVID_SOURCE is deprecated */
+
+#include "config.h"
+
+#include <stdio.h>
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#include <string.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <sys/types.h>
+#ifdef HAVE_SYS_TIME_H
+#include <sys/time.h>
+#endif
+#ifdef HAVE_SYS_WAIT_H
+#include <sys/wait.h>
+#endif
+#include <sys/stat.h>
+#ifdef HAVE_SYS_FILE_H
+#include <sys/file.h>
+#endif
+#ifdef HAVE_SYS_IOCTL_H
+#include <sys/ioctl.h>
+#endif
+#ifdef HAVE_SYS_RANDOM_H
+#include <sys/random.h>
+#endif
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+#ifdef HAVE_SYS_UN_H
+#include <sys/un.h>
+#endif
+#ifdef HAVE_SYS_SOCKIO_H
+#include <sys/sockio.h>
+#endif
+#ifdef HAVE_NET_IF_H
+#include <net/if.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+#include <netinet/in.h>
+#endif
+#ifdef HAVE_NET_IF_DL_H
+#include <net/if_dl.h>
+#endif
+#if defined(__linux__) && defined(HAVE_SYS_SYSCALL_H)
+#include <sys/syscall.h>
+#endif
+#ifdef HAVE_SYS_RESOURCE_H
+#include <sys/resource.h>
+#endif
+
+#include "uuidP.h"
+#include "uuidd.h"
+
+#ifdef HAVE_SRANDOM
+#define srand(x) 	srandom(x)
+#define rand() 		random()
+#endif
+
+#ifdef TLS
+#define THREAD_LOCAL static TLS
+#else
+#define THREAD_LOCAL static
+#endif
+
+#if defined(__linux__) && defined(__NR_gettid) && defined(HAVE_JRAND48)
+#define DO_JRAND_MIX
+THREAD_LOCAL unsigned short jrand_seed[3];
+#endif
+
+static int get_random_fd(void)
+{
+	struct timeval	tv;
+	static int	fd = -2;
+	int		i;
+
+	if (fd == -2) {
+		gettimeofday(&tv, 0);
+#ifndef _WIN32
+		fd = open("/dev/urandom", O_RDONLY);
+		if (fd == -1)
+			fd = open("/dev/random", O_RDONLY | O_NONBLOCK);
+		if (fd >= 0) {
+			i = fcntl(fd, F_GETFD);
+			if (i >= 0)
+				fcntl(fd, F_SETFD, i | FD_CLOEXEC);
+		}
+#endif
+		srand(((unsigned)getpid() << 16) ^ getuid() ^ tv.tv_sec ^ tv.tv_usec);
+#ifdef DO_JRAND_MIX
+		jrand_seed[0] = getpid() ^ (tv.tv_sec & 0xFFFF);
+		jrand_seed[1] = getppid() ^ (tv.tv_usec & 0xFFFF);
+		jrand_seed[2] = (tv.tv_sec ^ tv.tv_usec) >> 16;
+#endif
+	}
+	/* Crank the random number generator a few times */
+	gettimeofday(&tv, 0);
+	for (i = (tv.tv_sec ^ tv.tv_usec) & 0x1F; i > 0; i--)
+		rand();
+	return fd;
+}
+
+
+/*
+ * Generate a series of random bytes.  Use /dev/urandom if possible,
+ * and if not, use srandom/random.
+ */
+static void get_random_bytes(void *buf, int nbytes)
+{
+	int i, n = nbytes, fd;
+	int lose_counter = 0;
+	unsigned char *cp = buf;
+
+#ifdef HAVE_GETRANDOM
+	i = getrandom(buf, nbytes, 0);
+	if (i == nbytes)
+		return;
+#endif
+#ifdef HAVE_GETENTROPY
+	if (getentropy(buf, nbytes) == 0)
+		return;
+#endif
+
+	fd = get_random_fd();
+	if (fd >= 0) {
+		while (n > 0) {
+			i = read(fd, cp, n);
+			if (i <= 0) {
+				if (lose_counter++ > 16)
+					break;
+				continue;
+			}
+			n -= i;
+			cp += i;
+			lose_counter = 0;
+		}
+	}
+
+	/*
+	 * We do this all the time, but this is the only source of
+	 * randomness if /dev/random/urandom is out to lunch.
+	 */
+	for (cp = buf, i = 0; i < nbytes; i++)
+		*cp++ ^= (rand() >> 7) & 0xFF;
+#ifdef DO_JRAND_MIX
+	{
+		unsigned short tmp_seed[3];
+
+		memcpy(tmp_seed, jrand_seed, sizeof(tmp_seed));
+		jrand_seed[2] = jrand_seed[2] ^ syscall(__NR_gettid);
+		for (cp = buf, i = 0; i < nbytes; i++)
+			*cp++ ^= (jrand48(tmp_seed) >> 7) & 0xFF;
+		memcpy(jrand_seed, tmp_seed,
+		       sizeof(jrand_seed) - sizeof(unsigned short));
+	}
+#endif
+
+	return;
+}
+
+/*
+ * Get the ethernet hardware address, if we can find it...
+ *
+ * XXX for a windows version, probably should use GetAdaptersInfo:
+ * http://www.codeguru.com/cpp/i-n/network/networkinformation/article.php/c5451
+ * commenting out get_node_id just to get gen_uuid to compile under windows
+ * is not the right way to go!
+ */
+static int get_node_id(unsigned char *node_id)
+{
+#ifdef HAVE_NET_IF_H
+	int 		sd;
+	struct ifreq 	ifr, *ifrp;
+	struct ifconf 	ifc;
+	char buf[1024];
+	int		n, i;
+	unsigned char 	*a;
+#ifdef HAVE_NET_IF_DL_H
+	struct sockaddr_dl *sdlp;
+#endif
+
+/*
+ * BSD 4.4 defines the size of an ifreq to be
+ * max(sizeof(ifreq), sizeof(ifreq.ifr_name)+ifreq.ifr_addr.sa_len
+ * However, under earlier systems, sa_len isn't present, so the size is
+ * just sizeof(struct ifreq)
+ */
+#ifdef HAVE_SA_LEN
+#ifndef max
+#define max(a,b) ((a) > (b) ? (a) : (b))
+#endif
+#define ifreq_size(i) max(sizeof(struct ifreq),\
+     sizeof((i).ifr_name)+(i).ifr_addr.sa_len)
+#else
+#define ifreq_size(i) sizeof(struct ifreq)
+#endif /* HAVE_SA_LEN*/
+
+	sd = socket(AF_INET, SOCK_DGRAM, IPPROTO_IP);
+	if (sd < 0) {
+		return -1;
+	}
+	memset(buf, 0, sizeof(buf));
+	ifc.ifc_len = sizeof(buf);
+	ifc.ifc_buf = buf;
+	if (ioctl (sd, SIOCGIFCONF, (char *)&ifc) < 0) {
+		close(sd);
+		return -1;
+	}
+	n = ifc.ifc_len;
+	for (i = 0; i < n; i+= ifreq_size(*ifrp) ) {
+		ifrp = (struct ifreq *)((char *) ifc.ifc_buf+i);
+		strncpy(ifr.ifr_name, ifrp->ifr_name, IFNAMSIZ);
+#ifdef SIOCGIFHWADDR
+		if (ioctl(sd, SIOCGIFHWADDR, &ifr) < 0)
+			continue;
+		a = (unsigned char *) &ifr.ifr_hwaddr.sa_data;
+#else
+#ifdef SIOCGENADDR
+		if (ioctl(sd, SIOCGENADDR, &ifr) < 0)
+			continue;
+		a = (unsigned char *) ifr.ifr_enaddr;
+#else
+#ifdef HAVE_NET_IF_DL_H
+		sdlp = (struct sockaddr_dl *) &ifrp->ifr_addr;
+		if ((sdlp->sdl_family != AF_LINK) || (sdlp->sdl_alen != 6))
+			continue;
+		a = (unsigned char *) &sdlp->sdl_data[sdlp->sdl_nlen];
+#else
+		/*
+		 * XXX we don't have a way of getting the hardware
+		 * address
+		 */
+		close(sd);
+		return 0;
+#endif /* HAVE_NET_IF_DL_H */
+#endif /* SIOCGENADDR */
+#endif /* SIOCGIFHWADDR */
+		if (!a[0] && !a[1] && !a[2] && !a[3] && !a[4] && !a[5])
+			continue;
+		if (node_id) {
+			memcpy(node_id, a, 6);
+			close(sd);
+			return 1;
+		}
+	}
+	close(sd);
+#endif
+	return 0;
+}
+
+/* Assume that the gettimeofday() has microsecond granularity */
+#define MAX_ADJUSTMENT 10
+
+static int get_clock(uint32_t *clock_high, uint32_t *clock_low,
+		     uint16_t *ret_clock_seq, int *num)
+{
+	THREAD_LOCAL int		adjustment = 0;
+	THREAD_LOCAL struct timeval	last = {0, 0};
+	THREAD_LOCAL int		state_fd = -2;
+	THREAD_LOCAL FILE		*state_f;
+	THREAD_LOCAL uint16_t		clock_seq;
+	struct timeval 			tv;
+#ifndef _WIN32
+	struct flock			fl;
+#endif
+	uint64_t			clock_reg;
+	mode_t				save_umask;
+	int				len;
+
+	if (state_fd == -2) {
+		save_umask = umask(0);
+		state_fd = open("/var/lib/libuuid/clock.txt",
+				O_RDWR|O_CREAT, 0660);
+		(void) umask(save_umask);
+		if (state_fd >= 0) {
+			state_f = fdopen(state_fd, "r+");
+			if (!state_f) {
+				close(state_fd);
+				state_fd = -1;
+			}
+		}
+	}
+#ifndef _WIN32
+	fl.l_type = F_WRLCK;
+	fl.l_whence = SEEK_SET;
+	fl.l_start = 0;
+	fl.l_len = 0;
+	fl.l_pid = 0;
+	if (state_fd >= 0) {
+		rewind(state_f);
+		while (fcntl(state_fd, F_SETLKW, &fl) < 0) {
+			if ((errno == EAGAIN) || (errno == EINTR))
+				continue;
+			fclose(state_f);
+			state_fd = -1;
+			break;
+		}
+	}
+#endif
+	if (state_fd >= 0) {
+		unsigned int cl;
+		unsigned long tv1, tv2;
+		int a;
+
+		if (fscanf(state_f, "clock: %04x tv: %lu %lu adj: %d\n",
+			   &cl, &tv1, &tv2, &a) == 4) {
+			clock_seq = cl & 0x3FFF;
+			last.tv_sec = tv1;
+			last.tv_usec = tv2;
+			adjustment = a;
+		}
+	}
+
+	if ((last.tv_sec == 0) && (last.tv_usec == 0)) {
+		get_random_bytes(&clock_seq, sizeof(clock_seq));
+		clock_seq &= 0x3FFF;
+		gettimeofday(&last, 0);
+		last.tv_sec--;
+	}
+
+try_again:
+	gettimeofday(&tv, 0);
+	if ((tv.tv_sec < last.tv_sec) ||
+	    ((tv.tv_sec == last.tv_sec) &&
+	     (tv.tv_usec < last.tv_usec))) {
+		clock_seq = (clock_seq+1) & 0x3FFF;
+		adjustment = 0;
+		last = tv;
+	} else if ((tv.tv_sec == last.tv_sec) &&
+	    (tv.tv_usec == last.tv_usec)) {
+		if (adjustment >= MAX_ADJUSTMENT)
+			goto try_again;
+		adjustment++;
+	} else {
+		adjustment = 0;
+		last = tv;
+	}
+
+	clock_reg = tv.tv_usec*10 + adjustment;
+	clock_reg += ((uint64_t) tv.tv_sec)*10000000;
+	clock_reg += (((uint64_t) 0x01B21DD2) << 32) + 0x13814000;
+
+	if (num && (*num > 1)) {
+		adjustment += *num - 1;
+		last.tv_usec += adjustment / 10;
+		adjustment = adjustment % 10;
+		last.tv_sec += last.tv_usec / 1000000;
+		last.tv_usec = last.tv_usec % 1000000;
+	}
+
+	if (state_fd > 0) {
+		rewind(state_f);
+		len = fprintf(state_f,
+			      "clock: %04x tv: %016lu %08lu adj: %08d\n",
+			      clock_seq, (unsigned long)last.tv_sec,
+			      (unsigned long)last.tv_usec, adjustment);
+		fflush(state_f);
+		if (ftruncate(state_fd, len) < 0) {
+			fprintf(state_f, "                   \n");
+			fflush(state_f);
+		}
+		rewind(state_f);
+#ifndef _WIN32
+		fl.l_type = F_UNLCK;
+		if (fcntl(state_fd, F_SETLK, &fl) < 0) {
+			fclose(state_f);
+			state_fd = -1;
+		}
+#endif
+	}
+
+	*clock_high = clock_reg >> 32;
+	*clock_low = clock_reg;
+	*ret_clock_seq = clock_seq;
+	return 0;
+}
+
+#if defined(USE_UUIDD) && defined(HAVE_SYS_UN_H)
+static ssize_t read_all(int fd, char *buf, size_t count)
+{
+	ssize_t ret;
+	ssize_t c = 0;
+	int tries = 0;
+
+	memset(buf, 0, count);
+	while (count > 0) {
+		ret = read(fd, buf, count);
+		if (ret <= 0) {
+			if ((errno == EAGAIN || errno == EINTR || ret == 0) &&
+			    (tries++ < 5))
+				continue;
+			return c ? c : -1;
+		}
+		if (ret > 0)
+			tries = 0;
+		count -= ret;
+		buf += ret;
+		c += ret;
+	}
+	return c;
+}
+
+/*
+ * Close all file descriptors
+ */
+static void close_all_fds(void)
+{
+	int i, max;
+
+#if defined(HAVE_SYSCONF) && defined(_SC_OPEN_MAX)
+	max = sysconf(_SC_OPEN_MAX);
+#elif defined(HAVE_GETDTABLESIZE)
+	max = getdtablesize();
+#elif defined(HAVE_GETRLIMIT) && defined(RLIMIT_NOFILE)
+	struct rlimit rl;
+
+	getrlimit(RLIMIT_NOFILE, &rl);
+	max = rl.rlim_cur;
+#else
+	max = OPEN_MAX;
+#endif
+
+	for (i=0; i < max; i++) {
+		close(i);
+		if (i <= 2)
+			open("/dev/null", O_RDWR);
+	}
+}
+#endif /* defined(USE_UUIDD) && defined(HAVE_SYS_UN_H) */
+
+#if __GNUC_PREREQ (4, 6)
+#pragma GCC diagnostic push
+#if !defined(USE_UUIDD) || !defined(HAVE_SYS_UN_H)
+#pragma GCC diagnostic ignored "-Wunused-parameter"
+#endif
+#endif
+/*
+ * Try using the uuidd daemon to generate the UUID
+ *
+ * Returns 0 on success, non-zero on failure.
+ */
+static int get_uuid_via_daemon(int op, uuid_t out, int *num)
+{
+#if defined(USE_UUIDD) && defined(HAVE_SYS_UN_H)
+	char op_buf[64];
+	int op_len;
+	int s;
+	ssize_t ret;
+	int32_t reply_len = 0, expected = 16;
+	struct sockaddr_un srv_addr;
+	struct stat st;
+	pid_t pid;
+	static const char *uuidd_path = UUIDD_PATH;
+	static int access_ret = -2;
+	static int start_attempts = 0;
+
+	if ((s = socket(AF_UNIX, SOCK_STREAM, 0)) < 0)
+		return -1;
+
+	srv_addr.sun_family = AF_UNIX;
+	strcpy(srv_addr.sun_path, UUIDD_SOCKET_PATH);
+
+	if (connect(s, (const struct sockaddr *) &srv_addr,
+		    sizeof(struct sockaddr_un)) < 0) {
+		if (access_ret == -2)
+			access_ret = access(uuidd_path, X_OK);
+		if (access_ret == 0)
+			access_ret = stat(uuidd_path, &st);
+		if (access_ret == 0 && (st.st_mode & (S_ISUID | S_ISGID)) == 0)
+			access_ret = access(UUIDD_DIR, W_OK);
+		if (access_ret == 0 && start_attempts++ < 5) {
+			if ((pid = fork()) == 0) {
+				close_all_fds();
+				execl(uuidd_path, "uuidd", "-qT", "300",
+				      (char *) NULL);
+				exit(1);
+			}
+			(void) waitpid(pid, 0, 0);
+			if (connect(s, (const struct sockaddr *) &srv_addr,
+				    sizeof(struct sockaddr_un)) < 0)
+				goto fail;
+		} else
+			goto fail;
+	}
+	op_buf[0] = op;
+	op_len = 1;
+	if (op == UUIDD_OP_BULK_TIME_UUID) {
+		memcpy(op_buf+1, num, sizeof(*num));
+		op_len += sizeof(*num);
+		expected += sizeof(*num);
+	}
+
+	ret = write(s, op_buf, op_len);
+	if (ret < 1)
+		goto fail;
+
+	ret = read_all(s, (char *) &reply_len, sizeof(reply_len));
+	if (ret < 0)
+		goto fail;
+
+	if (reply_len != expected)
+		goto fail;
+
+	ret = read_all(s, op_buf, reply_len);
+
+	if (op == UUIDD_OP_BULK_TIME_UUID)
+		memcpy(op_buf+16, num, sizeof(int));
+
+	memcpy(out, op_buf, 16);
+
+	close(s);
+	return ((ret == expected) ? 0 : -1);
+
+fail:
+	close(s);
+#endif
+	return -1;
+}
+#if __GNUC_PREREQ (4, 6)
+#pragma GCC diagnostic pop
+#endif
+
+void uuid__generate_time(uuid_t out, int *num)
+{
+	static unsigned char node_id[6];
+	static int has_init = 0;
+	struct uuid uu;
+	uint32_t	clock_mid;
+
+	if (!has_init) {
+		if (get_node_id(node_id) <= 0) {
+			get_random_bytes(node_id, 6);
+			/*
+			 * Set multicast bit, to prevent conflicts
+			 * with IEEE 802 addresses obtained from
+			 * network cards
+			 */
+			node_id[0] |= 0x01;
+		}
+		has_init = 1;
+	}
+	get_clock(&clock_mid, &uu.time_low, &uu.clock_seq, num);
+	uu.clock_seq |= 0x8000;
+	uu.time_mid = (uint16_t) clock_mid;
+	uu.time_hi_and_version = ((clock_mid >> 16) & 0x0FFF) | 0x1000;
+	memcpy(uu.node, node_id, 6);
+	uuid_pack(&uu, out);
+}
+
+void uuid_generate_time(uuid_t out)
+{
+#ifdef TLS
+	THREAD_LOCAL int		num = 0;
+	THREAD_LOCAL struct uuid	uu;
+	THREAD_LOCAL time_t		last_time = 0;
+	time_t				now;
+
+	if (num > 0) {
+		now = time(0);
+		if (now > last_time+1)
+			num = 0;
+	}
+	if (num <= 0) {
+		num = 1000;
+		if (get_uuid_via_daemon(UUIDD_OP_BULK_TIME_UUID,
+					out, &num) == 0) {
+			last_time = time(0);
+			uuid_unpack(out, &uu);
+			num--;
+			return;
+		}
+		num = 0;
+	}
+	if (num > 0) {
+		uu.time_low++;
+		if (uu.time_low == 0) {
+			uu.time_mid++;
+			if (uu.time_mid == 0)
+				uu.time_hi_and_version++;
+		}
+		num--;
+		uuid_pack(&uu, out);
+		return;
+	}
+#else
+	if (get_uuid_via_daemon(UUIDD_OP_TIME_UUID, out, 0) == 0)
+		return;
+#endif
+
+	uuid__generate_time(out, 0);
+}
+
+
+void uuid__generate_random(uuid_t out, int *num)
+{
+	uuid_t	buf;
+	struct uuid uu;
+	int i, n;
+
+	if (!num || !*num)
+		n = 1;
+	else
+		n = *num;
+
+	for (i = 0; i < n; i++) {
+		get_random_bytes(buf, sizeof(buf));
+		uuid_unpack(buf, &uu);
+
+		uu.clock_seq = (uu.clock_seq & 0x3FFF) | 0x8000;
+		uu.time_hi_and_version = (uu.time_hi_and_version & 0x0FFF)
+			| 0x4000;
+		uuid_pack(&uu, out);
+		out += sizeof(uuid_t);
+	}
+}
+
+void uuid_generate_random(uuid_t out)
+{
+	int	num = 1;
+	/* No real reason to use the daemon for random uuid's -- yet */
+
+	uuid__generate_random(out, &num);
+}
+
+
+/*
+ * This is the generic front-end to uuid_generate_random and
+ * uuid_generate_time.  It uses uuid_generate_random only if
+ * /dev/urandom is available, since otherwise we won't have
+ * high-quality randomness.
+ */
+void uuid_generate(uuid_t out)
+{
+	if (get_random_fd() >= 0)
+		uuid_generate_random(out);
+	else
+		uuid_generate_time(out);
+}