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authorTrent Lloyd <lathiat@bur.st>2005-06-04 18:56:52 +0000
committerTrent Lloyd <lathiat@bur.st>2005-06-04 18:56:52 +0000
commitc5544522f6409095627dc3d1129560195ab4ec40 (patch)
treec108416de17f0fa463b6dc9be8878bff1c16a120 /avahi-core/util.c
parent75d26059acb131382779de9b3f880df717f6d2ba (diff)
* Split out a fair bit of avahi-core into avahi-common for use by the client library
git-svn-id: file:///home/lennart/svn/public/avahi/trunk@98 941a03a8-eaeb-0310-b9a0-b1bbd8fe43fe
Diffstat (limited to 'avahi-core/util.c')
-rw-r--r--avahi-core/util.c428
1 files changed, 0 insertions, 428 deletions
diff --git a/avahi-core/util.c b/avahi-core/util.c
deleted file mode 100644
index a41475a..0000000
--- a/avahi-core/util.c
+++ /dev/null
@@ -1,428 +0,0 @@
-/* $Id$ */
-
-/***
- This file is part of avahi.
-
- avahi is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as
- published by the Free Software Foundation; either version 2.1 of the
- License, or (at your option) any later version.
-
- avahi is distributed in the hope that it will be useful, but WITHOUT
- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
- Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with avahi; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
- USA.
-***/
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#include <string.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <limits.h>
-#include <stdio.h>
-#include <ctype.h>
-#include <stdlib.h>
-
-#include "util.h"
-
-gchar *avahi_get_host_name(void) {
-#ifdef HOST_NAME_MAX
- char t[HOST_NAME_MAX];
-#else
- char t[256];
-#endif
- gethostname(t, sizeof(t));
- t[sizeof(t)-1] = 0;
- return avahi_normalize_name(t);
-}
-
-static gchar *unescape_uneeded(const gchar *src, gchar *ret_dest, size_t size) {
- gboolean escaped = FALSE;
-
- g_assert(src);
- g_assert(ret_dest);
- g_assert(size > 0);
-
- for (; *src; src++) {
-
- if (!escaped && *src == '\\')
- escaped = TRUE;
- else if (escaped && (*src == '.' || *src == '\\')) {
-
- if ((size -= 2) <= 1) break;
-
- *(ret_dest++) = '\\';
- *(ret_dest++) = *src;
- escaped = FALSE;
- } else {
- if (--size <= 1) break;
-
- *(ret_dest++) = *src;
- escaped = FALSE;
- }
-
- }
-
- *ret_dest = 0;
-
- return ret_dest;
-}
-
-gchar *avahi_normalize_name(const gchar *s) {
- gchar tmp[256];
- gchar *n, *t;
- guint l;
- g_assert(s);
-
- unescape_uneeded(s, tmp, sizeof(tmp));
-
- n = g_utf8_normalize(tmp, -1, G_NORMALIZE_DEFAULT);
-
- if ((l = strlen(n)) == 0) {
- g_free(n);
- return g_strdup(".");
- }
-
- if (n[l-1] == '.')
- return n;
-
- t = g_strdup_printf("%s.", n);
- g_free(n);
- return t;
-}
-
-gint avahi_timeval_compare(const GTimeVal *a, const GTimeVal *b) {
- g_assert(a);
- g_assert(b);
-
- if (a->tv_sec < b->tv_sec)
- return -1;
-
- if (a->tv_sec > b->tv_sec)
- return 1;
-
- if (a->tv_usec < b->tv_usec)
- return -1;
-
- if (a->tv_usec > b->tv_usec)
- return 1;
-
- return 0;
-}
-
-glong avahi_timeval_diff(const GTimeVal *a, const GTimeVal *b) {
- g_assert(a);
- g_assert(b);
-
- if (avahi_timeval_compare(a, b) < 0)
- return avahi_timeval_diff(b, a);
-
- return ((glong) a->tv_sec - b->tv_sec)*1000000 + a->tv_usec - b->tv_usec;
-}
-
-
-gint avahi_set_cloexec(gint fd) {
- gint n;
-
- g_assert(fd >= 0);
-
- if ((n = fcntl(fd, F_GETFD)) < 0)
- return -1;
-
- if (n & FD_CLOEXEC)
- return 0;
-
- return fcntl(fd, F_SETFD, n|FD_CLOEXEC);
-}
-
-gint avahi_set_nonblock(gint fd) {
- gint n;
-
- g_assert(fd >= 0);
-
- if ((n = fcntl(fd, F_GETFL)) < 0)
- return -1;
-
- if (n & O_NONBLOCK)
- return 0;
-
- return fcntl(fd, F_SETFL, n|O_NONBLOCK);
-}
-
-gint avahi_wait_for_write(gint fd) {
- fd_set fds;
- gint r;
-
- FD_ZERO(&fds);
- FD_SET(fd, &fds);
-
- if ((r = select(fd+1, NULL, &fds, NULL, NULL)) < 0) {
- g_message("select() failed: %s", strerror(errno));
-
- return -1;
- }
-
- g_assert(r > 0);
-
- return 0;
-}
-
-GTimeVal *avahi_elapse_time(GTimeVal *tv, guint msec, guint jitter) {
- g_assert(tv);
-
- g_get_current_time(tv);
-
- if (msec)
- g_time_val_add(tv, msec*1000);
-
- if (jitter)
- g_time_val_add(tv, g_random_int_range(0, jitter) * 1000);
-
- return tv;
-}
-
-glong avahi_age(const GTimeVal *a) {
- GTimeVal now;
-
- g_assert(a);
-
- g_get_current_time(&now);
-
- return avahi_timeval_diff(&now, a);
-}
-
-/* Read the first label from string *name, unescape "\" and write it to dest */
-gchar *avahi_unescape_label(const gchar **name, gchar *dest, guint size) {
- guint i = 0;
- gchar *d;
-
- g_assert(dest);
- g_assert(size > 0);
- g_assert(name);
-
- if (!**name)
- return NULL;
-
- d = dest;
-
- for (;;) {
- if (i >= size)
- return NULL;
-
- if (**name == '.') {
- (*name)++;
- break;
- }
-
- if (**name == 0)
- break;
-
- if (**name == '\\') {
- (*name) ++;
-
- if (**name == 0)
- break;
- }
-
- *(d++) = *((*name) ++);
- i++;
- }
-
- g_assert(i < size);
-
- *d = 0;
-
- return dest;
-}
-
-/* Escape "\" and ".", append \0 */
-gchar *avahi_escape_label(const guint8* src, guint src_length, gchar **ret_name, guint *ret_size) {
- gchar *r;
-
- g_assert(src);
- g_assert(ret_name);
- g_assert(*ret_name);
- g_assert(ret_size);
- g_assert(*ret_size > 0);
-
- r = *ret_name;
-
- while (src_length > 0) {
- if (*src == '.' || *src == '\\') {
- if (*ret_size < 3)
- return NULL;
-
- *((*ret_name) ++) = '\\';
- (*ret_size) --;
- }
-
- if (*ret_size < 2)
- return NULL;
-
- *((*ret_name)++) = *src;
- (*ret_size) --;
-
- src_length --;
- src++;
- }
-
- **ret_name = 0;
-
- return r;
-}
-
-static gint utf8_strcasecmp(const gchar *a, const gchar *b) {
- gchar *ta, *tb;
- gint r;
-
- g_assert(a);
- g_assert(b);
-
- ta = g_utf8_casefold(a, -1);
- tb = g_utf8_casefold(b, -1);
- r = g_utf8_collate(ta, tb);
- g_free(ta);
- g_free(tb);
-
- return r;
-}
-
-gboolean avahi_domain_equal(const gchar *a, const gchar *b) {
- g_assert(a);
- g_assert(b);
-
- if (a == b)
- return TRUE;
-
- for (;;) {
- gchar ca[65], cb[65], *pa, *pb;
-
- pa = avahi_unescape_label(&a, ca, sizeof(ca));
- pb = avahi_unescape_label(&b, cb, sizeof(cb));
-
- if (!pa && !pb)
- return TRUE;
- else if ((pa && !pb) || (!pa && pb))
- return FALSE;
-
- if (utf8_strcasecmp(pa, pb))
- return FALSE;
- }
-
- return TRUE;
-}
-
-gint avahi_binary_domain_cmp(const gchar *a, const gchar *b) {
- g_assert(a);
- g_assert(b);
-
- if (a == b)
- return 0;
-
- for (;;) {
- gchar ca[65], cb[65], *pa, *pb;
- gint r;
-
- pa = avahi_unescape_label(&a, ca, sizeof(ca));
- pb = avahi_unescape_label(&b, cb, sizeof(cb));
-
- if (!pa && !pb)
- return 0;
- else if (pa && !pb)
- return 1;
- else if (!pa && pb)
- return -1;
-
- if ((r = strcmp(pa, pb)))
- return r;
- }
-}
-
-void avahi_hexdump(gconstpointer p, guint size) {
- const guint8 *c = p;
- g_assert(p);
-
- printf("Dumping %u bytes from %p:\n", size, p);
-
- while (size > 0) {
- guint i;
-
- for (i = 0; i < 16; i++) {
- if (i < size)
- printf("%02x ", c[i]);
- else
- printf(" ");
- }
-
- for (i = 0; i < 16; i++) {
- if (i < size)
- printf("%c", c[i] >= 32 && c[i] < 127 ? c[i] : '.');
- else
- printf(" ");
- }
-
- printf("\n");
-
- c += 16;
-
- if (size <= 16)
- break;
-
- size -= 16;
- }
-}
-
-guint avahi_domain_hash(const gchar *s) {
- guint hash = 0;
-
- for (;;) {
- gchar c[65], *n, *m;
-
- if (!avahi_unescape_label(&s, c, sizeof(c)))
- return hash;
-
- if (!c[0])
- continue;
-
- n = g_utf8_normalize(c, -1, G_NORMALIZE_DEFAULT);
- m = g_utf8_strdown(n, -1);
-
- hash += g_str_hash(m);
-
- g_free(m);
- g_free(n);
- }
-}
-
-gchar *avahi_format_mac_address(const guint8* mac, guint size) {
- gchar *r, *t;
- guint i;
- static const gchar hex[] = "0123456789abcdef";
-
- t = r = g_new(gchar, size > 0 ? size*3 : 1);
-
- if (size <= 0) {
- *r = 0;
- return r;
- }
-
- for (i = 0; i < size; i++) {
- *(t++) = hex[*mac >> 4];
- *(t++) = hex[*mac & 0xF];
- *(t++) = ':';
-
- mac++;
- }
-
- *(--t) = 0;
- return r;
-}