From c5544522f6409095627dc3d1129560195ab4ec40 Mon Sep 17 00:00:00 2001 From: Trent Lloyd Date: Sat, 4 Jun 2005 18:56:52 +0000 Subject: * 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 --- avahi-core/util.c | 428 ------------------------------------------------------ 1 file changed, 428 deletions(-) delete mode 100644 avahi-core/util.c (limited to 'avahi-core/util.c') 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 -#endif - -#include -#include -#include -#include -#include -#include -#include -#include - -#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; -} -- cgit