#include <stdio.h>
#include "dns.h"
+#include "util.h"
-flxDnsPacket* flx_dns_packet_new(guint max_size) {
- flxDnsPacket *p;
+AvahiDnsPacket* avahi_dns_packet_new(guint max_size) {
+ AvahiDnsPacket *p;
if (max_size <= 0)
- max_size = FLX_DNS_PACKET_MAX_SIZE;
- else if (max_size < FLX_DNS_PACKET_HEADER_SIZE)
- max_size = FLX_DNS_PACKET_HEADER_SIZE;
+ max_size = AVAHI_DNS_PACKET_MAX_SIZE;
+ else if (max_size < AVAHI_DNS_PACKET_HEADER_SIZE)
+ max_size = AVAHI_DNS_PACKET_HEADER_SIZE;
- p = g_malloc(sizeof(flxDnsPacket) + max_size);
- p->size = p->rindex = FLX_DNS_PACKET_HEADER_SIZE;
+ p = g_malloc(sizeof(AvahiDnsPacket) + max_size);
+ p->size = p->rindex = AVAHI_DNS_PACKET_HEADER_SIZE;
p->max_size = max_size;
+ p->name_table = NULL;
- memset(FLX_DNS_PACKET_DATA(p), 0, p->size);
+ memset(AVAHI_DNS_PACKET_DATA(p), 0, p->size);
return p;
}
-flxDnsPacket* flx_dns_packet_new_query(guint max_size) {
- flxDnsPacket *p;
+AvahiDnsPacket* avahi_dns_packet_new_query(guint max_size) {
+ AvahiDnsPacket *p;
- p = flx_dns_packet_new(max_size);
- flx_dns_packet_set_field(p, DNS_FIELD_FLAGS, DNS_FLAGS(0, 0, 0, 0, 0, 0, 0, 0, 0, 0));
+ p = avahi_dns_packet_new(max_size);
+ avahi_dns_packet_set_field(p, AVAHI_DNS_FIELD_FLAGS, AVAHI_DNS_FLAGS(0, 0, 0, 0, 0, 0, 0, 0, 0, 0));
return p;
}
-flxDnsPacket* flx_dns_packet_new_response(guint max_size) {
- flxDnsPacket *p;
+AvahiDnsPacket* avahi_dns_packet_new_response(guint max_size) {
+ AvahiDnsPacket *p;
- p = flx_dns_packet_new(max_size);
- flx_dns_packet_set_field(p, DNS_FIELD_FLAGS, DNS_FLAGS(1, 0, 0, 0, 0, 0, 0, 0, 0, 0));
+ p = avahi_dns_packet_new(max_size);
+ avahi_dns_packet_set_field(p, AVAHI_DNS_FIELD_FLAGS, AVAHI_DNS_FLAGS(1, 0, 0, 0, 0, 0, 0, 0, 0, 0));
return p;
}
-void flx_dns_packet_free(flxDnsPacket *p) {
+void avahi_dns_packet_free(AvahiDnsPacket *p) {
g_assert(p);
+
+ if (p->name_table)
+ g_hash_table_destroy(p->name_table);
+
g_free(p);
}
-void flx_dns_packet_set_field(flxDnsPacket *p, guint index, guint16 v) {
+void avahi_dns_packet_set_field(AvahiDnsPacket *p, guint index, guint16 v) {
g_assert(p);
- g_assert(index < FLX_DNS_PACKET_HEADER_SIZE);
+ g_assert(index < AVAHI_DNS_PACKET_HEADER_SIZE);
- ((guint16*) FLX_DNS_PACKET_DATA(p))[index] = g_htons(v);
+ ((guint16*) AVAHI_DNS_PACKET_DATA(p))[index] = g_htons(v);
}
-guint16 flx_dns_packet_get_field(flxDnsPacket *p, guint index) {
+guint16 avahi_dns_packet_get_field(AvahiDnsPacket *p, guint index) {
g_assert(p);
- g_assert(index < FLX_DNS_PACKET_HEADER_SIZE);
+ g_assert(index < AVAHI_DNS_PACKET_HEADER_SIZE);
+
+ return g_ntohs(((guint16*) AVAHI_DNS_PACKET_DATA(p))[index]);
+}
+
+/* Read the first label from string *name, unescape "\" and write it to dest */
+gchar *avahi_unescape_label(gchar *dest, guint size, const gchar **name) {
+ guint i = 0;
+ gchar *d;
+
+ g_assert(dest);
+ g_assert(size > 0);
+ g_assert(name);
+ g_assert(*name);
+
+ 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);
- return g_ntohs(((guint16*) FLX_DNS_PACKET_DATA(p))[index]);
+ *d = 0;
+
+ return dest;
}
-guint8* flx_dns_packet_append_name(flxDnsPacket *p, const gchar *name) {
- guint8 *d, *f = NULL;
+guint8* avahi_dns_packet_append_name(AvahiDnsPacket *p, const gchar *name) {
+ guint8 *d, *saved_ptr = NULL;
guint saved_size;
g_assert(p);
g_assert(name);
saved_size = p->size;
+ saved_ptr = avahi_dns_packet_extend(p, 0);
+
+ while (*name) {
+ guint n;
+ guint8* prev;
+ const gchar *pname;
+ gchar label[64];
- for (;;) {
- guint n = strcspn(name, ".");
- if (!n || n > 63)
- goto fail;
-
- if (!(d = flx_dns_packet_extend(p, n+1)))
- goto fail;
+ /* Check whether we can compress this name. */
+
+ if (p->name_table && (prev = g_hash_table_lookup(p->name_table, name))) {
+ guint index;
- if (!f)
- f = d;
- d[0] = n;
- memcpy(d+1, name, n);
+ g_assert(prev >= AVAHI_DNS_PACKET_DATA(p));
+ index = (guint) (prev - AVAHI_DNS_PACKET_DATA(p));
- name += n;
+ g_assert(index < p->size);
- /* no trailing dot */
- if (!*name)
- break;
+ if (index < 0x4000) {
+ guint16 *t;
+ if (!(t = (guint16*) avahi_dns_packet_extend(p, sizeof(guint16))))
+ return NULL;
- name ++;
+ *t = g_htons((0xC000 | index));
+ return saved_ptr;
+ }
+ }
- /* trailing dot */
- if (!*name)
- break;
+ pname = name;
+
+ if (!(avahi_unescape_label(label, sizeof(label), &name)))
+ goto fail;
+
+ if (!(d = avahi_dns_packet_append_string(p, label)))
+ goto fail;
+
+ if (!p->name_table)
+ p->name_table = g_hash_table_new_full((GHashFunc) avahi_domain_hash, (GEqualFunc) avahi_domain_equal, g_free, NULL);
+
+ g_hash_table_insert(p->name_table, g_strdup(pname), d);
}
- if (!(d = flx_dns_packet_extend(p, 1)))
+ if (!(d = avahi_dns_packet_extend(p, 1)))
goto fail;
- d[0] = 0;
+ *d = 0;
- return f;
+ return saved_ptr;
fail:
p->size = saved_size;
return NULL;
}
-guint8* flx_dns_packet_append_uint16(flxDnsPacket *p, guint16 v) {
+guint8* avahi_dns_packet_append_uint16(AvahiDnsPacket *p, guint16 v) {
guint8 *d;
g_assert(p);
- if (!(d = flx_dns_packet_extend(p, sizeof(guint16))))
+ if (!(d = avahi_dns_packet_extend(p, sizeof(guint16))))
return NULL;
*((guint16*) d) = g_htons(v);
return d;
}
-guint8 *flx_dns_packet_append_uint32(flxDnsPacket *p, guint32 v) {
+guint8 *avahi_dns_packet_append_uint32(AvahiDnsPacket *p, guint32 v) {
guint8 *d;
g_assert(p);
- if (!(d = flx_dns_packet_extend(p, sizeof(guint32))))
+ if (!(d = avahi_dns_packet_extend(p, sizeof(guint32))))
return NULL;
*((guint32*) d) = g_htonl(v);
return d;
}
-guint8 *flx_dns_packet_append_bytes(flxDnsPacket *p, gconstpointer b, guint l) {
+guint8 *avahi_dns_packet_append_bytes(AvahiDnsPacket *p, gconstpointer b, guint l) {
guint8* d;
g_assert(p);
g_assert(b);
g_assert(l);
- if (!(d = flx_dns_packet_extend(p, l)))
+ if (!(d = avahi_dns_packet_extend(p, l)))
return NULL;
memcpy(d, b, l);
return d;
}
-guint8* flx_dns_packet_append_string(flxDnsPacket *p, const gchar *s) {
+guint8* avahi_dns_packet_append_string(AvahiDnsPacket *p, const gchar *s) {
guint8* d;
guint k;
if ((k = strlen(s)) >= 255)
k = 255;
- if (!(d = flx_dns_packet_extend(p, k+1)))
+ if (!(d = avahi_dns_packet_extend(p, k+1)))
return NULL;
*d = (guint8) k;
return d;
}
-guint8 *flx_dns_packet_extend(flxDnsPacket *p, guint l) {
+guint8 *avahi_dns_packet_extend(AvahiDnsPacket *p, guint l) {
guint8 *d;
g_assert(p);
if (p->size+l > p->max_size)
return NULL;
- d = FLX_DNS_PACKET_DATA(p) + p->size;
+ d = AVAHI_DNS_PACKET_DATA(p) + p->size;
p->size += l;
return d;
}
-guint8 *flx_dns_packet_append_name_compressed(flxDnsPacket *p, const gchar *name, guint8 *prev) {
- guint16 *d;
- signed long k;
- g_assert(p);
-
- if (!prev)
- return flx_dns_packet_append_name(p, name);
-
- k = prev - FLX_DNS_PACKET_DATA(p);
- if (k < 0 || k >= 0x4000 || (guint) k >= p->size)
- return flx_dns_packet_append_name(p, name);
-
- if (!(d = (guint16*) flx_dns_packet_extend(p, sizeof(guint16))))
- return NULL;
-
- *d = g_htons((0xC000 | k));
- return prev;
-}
-
-gint flx_dns_packet_check_valid(flxDnsPacket *p) {
+gint avahi_dns_packet_check_valid(AvahiDnsPacket *p) {
guint16 flags;
g_assert(p);
if (p->size < 12)
return -1;
- flags = flx_dns_packet_get_field(p, DNS_FIELD_FLAGS);
+ flags = avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_FLAGS);
- if (flags & DNS_FLAG_OPCODE || flags & DNS_FLAG_RCODE)
+ if (flags & AVAHI_DNS_FLAG_OPCODE || flags & AVAHI_DNS_FLAG_RCODE)
return -1;
return 0;
}
-gint flx_dns_packet_is_query(flxDnsPacket *p) {
+gint avahi_dns_packet_is_query(AvahiDnsPacket *p) {
g_assert(p);
- return !(flx_dns_packet_get_field(p, DNS_FIELD_FLAGS) & DNS_FLAG_QR);
+ return !(avahi_dns_packet_get_field(p, AVAHI_DNS_FIELD_FLAGS) & AVAHI_DNS_FLAG_QR);
+}
+
+/* Read a label from a DNS packet, escape "\" and ".", append \0 */
+static gchar *escape_label(guint8* src, guint src_length, gchar **ret_name, guint *ret_name_length) {
+ gchar *r;
+
+ g_assert(src);
+ g_assert(ret_name);
+ g_assert(*ret_name);
+ g_assert(ret_name_length);
+ g_assert(*ret_name_length > 0);
+
+ r = *ret_name;
+
+ while (src_length > 0) {
+ if (*src == '.' || *src == '\\') {
+ if (*ret_name_length < 3)
+ return NULL;
+
+ *((*ret_name) ++) = '\\';
+ (*ret_name_length) --;
+ }
+
+ if (*ret_name_length < 2)
+ return NULL;
+
+ *((*ret_name)++) = *src;
+ (*ret_name_length) --;
+
+ src_length --;
+ src++;
+ }
+
+ **ret_name = 0;
+
+ return r;
}
-static gint consume_labels(flxDnsPacket *p, guint index, gchar *ret_name, guint l) {
+static gint consume_labels(AvahiDnsPacket *p, guint index, gchar *ret_name, guint l) {
gint ret = 0;
int compressed = 0;
int first_label = 1;
if (index+1 > p->size)
return -1;
- n = FLX_DNS_PACKET_DATA(p)[index];
+ n = AVAHI_DNS_PACKET_DATA(p)[index];
if (!n) {
index++;
} else
first_label = 0;
- memcpy(ret_name, FLX_DNS_PACKET_DATA(p) + index, n);
+ if (!(escape_label(AVAHI_DNS_PACKET_DATA(p) + index, n, &ret_name, &l)))
+ return -1;
+
index += n;
- ret_name += n;
- l -= n;
if (!compressed)
ret += n;
if (index+2 > p->size)
return -1;
- index = ((guint) (FLX_DNS_PACKET_DATA(p)[index] & ~0xC0)) << 8 | FLX_DNS_PACKET_DATA(p)[index+1];
+ index = ((guint) (AVAHI_DNS_PACKET_DATA(p)[index] & ~0xC0)) << 8 | AVAHI_DNS_PACKET_DATA(p)[index+1];
if (!compressed)
ret += 2;
}
}
-gint flx_dns_packet_consume_name(flxDnsPacket *p, gchar *ret_name, guint l) {
+gint avahi_dns_packet_consume_name(AvahiDnsPacket *p, gchar *ret_name, guint l) {
gint r;
if ((r = consume_labels(p, p->rindex, ret_name, l)) < 0)
return 0;
}
-gint flx_dns_packet_consume_uint16(flxDnsPacket *p, guint16 *ret_v) {
+gint avahi_dns_packet_consume_uint16(AvahiDnsPacket *p, guint16 *ret_v) {
g_assert(p);
g_assert(ret_v);
if (p->rindex + sizeof(guint16) > p->size)
return -1;
- *ret_v = g_ntohs(*((guint16*) (FLX_DNS_PACKET_DATA(p) + p->rindex)));
+ *ret_v = g_ntohs(*((guint16*) (AVAHI_DNS_PACKET_DATA(p) + p->rindex)));
p->rindex += sizeof(guint16);
return 0;
}
-gint flx_dns_packet_consume_uint32(flxDnsPacket *p, guint32 *ret_v) {
+gint avahi_dns_packet_consume_uint32(AvahiDnsPacket *p, guint32 *ret_v) {
g_assert(p);
g_assert(ret_v);
if (p->rindex + sizeof(guint32) > p->size)
return -1;
- *ret_v = g_ntohl(*((guint32*) (FLX_DNS_PACKET_DATA(p) + p->rindex)));
+ *ret_v = g_ntohl(*((guint32*) (AVAHI_DNS_PACKET_DATA(p) + p->rindex)));
p->rindex += sizeof(guint32);
return 0;
}
-gint flx_dns_packet_consume_bytes(flxDnsPacket *p, gpointer ret_data, guint l) {
+gint avahi_dns_packet_consume_bytes(AvahiDnsPacket *p, gpointer ret_data, guint l) {
g_assert(p);
g_assert(ret_data);
g_assert(l > 0);
if (p->rindex + l > p->size)
return -1;
- memcpy(ret_data, FLX_DNS_PACKET_DATA(p) + p->rindex, l);
+ memcpy(ret_data, AVAHI_DNS_PACKET_DATA(p) + p->rindex, l);
p->rindex += l;
return 0;
}
-gint flx_dns_packet_consume_string(flxDnsPacket *p, gchar *ret_string, guint l) {
+gint avahi_dns_packet_consume_string(AvahiDnsPacket *p, gchar *ret_string, guint l) {
guint k;
g_assert(p);
if (p->rindex >= p->size)
return -1;
- k = FLX_DNS_PACKET_DATA(p)[p->rindex];
+ k = AVAHI_DNS_PACKET_DATA(p)[p->rindex];
if (p->rindex+1+k > p->size)
return -1;
if (l > k+1)
l = k+1;
- memcpy(ret_string, FLX_DNS_PACKET_DATA(p)+p->rindex+1, l-1);
+ memcpy(ret_string, AVAHI_DNS_PACKET_DATA(p)+p->rindex+1, l-1);
ret_string[l-1] = 0;
}
-gconstpointer flx_dns_packet_get_rptr(flxDnsPacket *p) {
+gconstpointer avahi_dns_packet_get_rptr(AvahiDnsPacket *p) {
g_assert(p);
if (p->rindex > p->size)
return NULL;
- return FLX_DNS_PACKET_DATA(p) + p->rindex;
+ return AVAHI_DNS_PACKET_DATA(p) + p->rindex;
}
-gint flx_dns_packet_skip(flxDnsPacket *p, guint length) {
+gint avahi_dns_packet_skip(AvahiDnsPacket *p, guint length) {
g_assert(p);
if (p->rindex + length > p->size)
return 0;
}
-flxRecord* flx_dns_packet_consume_record(flxDnsPacket *p, gboolean *ret_cache_flush) {
+AvahiRecord* avahi_dns_packet_consume_record(AvahiDnsPacket *p, gboolean *ret_cache_flush) {
gchar name[257], buf[257];
guint16 type, class;
guint32 ttl;
guint16 rdlength;
gconstpointer data;
- flxRecord *r = NULL;
+ AvahiRecord *r = NULL;
gconstpointer start;
g_assert(p);
/* g_message("consume_record()"); */
- if (flx_dns_packet_consume_name(p, name, sizeof(name)) < 0 ||
- flx_dns_packet_consume_uint16(p, &type) < 0 ||
- flx_dns_packet_consume_uint16(p, &class) < 0 ||
- flx_dns_packet_consume_uint32(p, &ttl) < 0 ||
- flx_dns_packet_consume_uint16(p, &rdlength) < 0 ||
+ if (avahi_dns_packet_consume_name(p, name, sizeof(name)) < 0 ||
+ avahi_dns_packet_consume_uint16(p, &type) < 0 ||
+ avahi_dns_packet_consume_uint16(p, &class) < 0 ||
+ avahi_dns_packet_consume_uint32(p, &ttl) < 0 ||
+ avahi_dns_packet_consume_uint16(p, &rdlength) < 0 ||
p->rindex + rdlength > p->size)
-
goto fail;
/* g_message("name = %s, rdlength = %u", name, rdlength); */
-
- start = flx_dns_packet_get_rptr(p);
- r = flx_record_new_full(name, class, type);
+ *ret_cache_flush = !!(class & AVAHI_DNS_CACHE_FLUSH);
+ class &= ~AVAHI_DNS_CACHE_FLUSH;
+
+ start = avahi_dns_packet_get_rptr(p);
+
+ r = avahi_record_new_full(name, class, type);
switch (type) {
- case FLX_DNS_TYPE_PTR:
- case FLX_DNS_TYPE_CNAME:
+ case AVAHI_DNS_TYPE_PTR:
+ case AVAHI_DNS_TYPE_CNAME:
/* g_message("ptr"); */
- if (flx_dns_packet_consume_name(p, buf, sizeof(buf)) < 0)
+ if (avahi_dns_packet_consume_name(p, buf, sizeof(buf)) < 0)
goto fail;
r->data.ptr.name = g_strdup(buf);
break;
- case FLX_DNS_TYPE_SRV:
+ case AVAHI_DNS_TYPE_SRV:
/* g_message("srv"); */
- if (flx_dns_packet_consume_uint16(p, &r->data.srv.priority) < 0 ||
- flx_dns_packet_consume_uint16(p, &r->data.srv.weight) < 0 ||
- flx_dns_packet_consume_uint16(p, &r->data.srv.port) < 0 ||
- flx_dns_packet_consume_name(p, buf, sizeof(buf)) < 0)
+ if (avahi_dns_packet_consume_uint16(p, &r->data.srv.priority) < 0 ||
+ avahi_dns_packet_consume_uint16(p, &r->data.srv.weight) < 0 ||
+ avahi_dns_packet_consume_uint16(p, &r->data.srv.port) < 0 ||
+ avahi_dns_packet_consume_name(p, buf, sizeof(buf)) < 0)
goto fail;
r->data.srv.name = g_strdup(buf);
break;
- case FLX_DNS_TYPE_HINFO:
+ case AVAHI_DNS_TYPE_HINFO:
/* g_message("hinfo"); */
- if (flx_dns_packet_consume_string(p, buf, sizeof(buf)) < 0)
+ if (avahi_dns_packet_consume_string(p, buf, sizeof(buf)) < 0)
goto fail;
r->data.hinfo.cpu = g_strdup(buf);
- if (flx_dns_packet_consume_string(p, buf, sizeof(buf)) < 0)
+ if (avahi_dns_packet_consume_string(p, buf, sizeof(buf)) < 0)
goto fail;
r->data.hinfo.os = g_strdup(buf);
break;
- case FLX_DNS_TYPE_TXT:
+ case AVAHI_DNS_TYPE_TXT:
/* g_message("txt"); */
if (rdlength > 0) {
- r->data.txt.string_list = flx_string_list_parse(flx_dns_packet_get_rptr(p), rdlength);
+ r->data.txt.string_list = avahi_string_list_parse(avahi_dns_packet_get_rptr(p), rdlength);
- if (flx_dns_packet_skip(p, rdlength) < 0)
+ if (avahi_dns_packet_skip(p, rdlength) < 0)
goto fail;
} else
r->data.txt.string_list = NULL;
break;
- case FLX_DNS_TYPE_A:
+ case AVAHI_DNS_TYPE_A:
/* g_message("A"); */
- if (flx_dns_packet_consume_bytes(p, &r->data.a.address, sizeof(flxIPv4Address)) < 0)
+ if (avahi_dns_packet_consume_bytes(p, &r->data.a.address, sizeof(AvahiIPv4Address)) < 0)
goto fail;
break;
- case FLX_DNS_TYPE_AAAA:
+ case AVAHI_DNS_TYPE_AAAA:
/* g_message("aaaa"); */
- if (flx_dns_packet_consume_bytes(p, &r->data.aaaa.address, sizeof(flxIPv6Address)) < 0)
+ if (avahi_dns_packet_consume_bytes(p, &r->data.aaaa.address, sizeof(AvahiIPv6Address)) < 0)
goto fail;
break;
if (rdlength > 0) {
- r->data.generic.data = g_memdup(flx_dns_packet_get_rptr(p), rdlength);
+ r->data.generic.data = g_memdup(avahi_dns_packet_get_rptr(p), rdlength);
- if (flx_dns_packet_skip(p, rdlength) < 0)
+ if (avahi_dns_packet_skip(p, rdlength) < 0)
goto fail;
}
break;
}
-/* g_message("%i == %u ?", (guint8*) flx_dns_packet_get_rptr(p) - (guint8*) start, rdlength); */
+/* g_message("%i == %u ?", (guint8*) avahi_dns_packet_get_rptr(p) - (guint8*) start, rdlength); */
/* Check if we read enough data */
- if ((guint8*) flx_dns_packet_get_rptr(p) - (guint8*) start != rdlength)
+ if ((guint8*) avahi_dns_packet_get_rptr(p) - (guint8*) start != rdlength)
goto fail;
- *ret_cache_flush = !!(class & MDNS_CACHE_FLUSH);
- class &= ~ MDNS_CACHE_FLUSH;
-
r->ttl = ttl;
return r;
fail:
if (r)
- flx_record_unref(r);
+ avahi_record_unref(r);
return NULL;
}
-flxKey* flx_dns_packet_consume_key(flxDnsPacket *p) {
+AvahiKey* avahi_dns_packet_consume_key(AvahiDnsPacket *p, gboolean *ret_unicast_response) {
gchar name[256];
guint16 type, class;
g_assert(p);
+ g_assert(ret_unicast_response);
- if (flx_dns_packet_consume_name(p, name, sizeof(name)) < 0 ||
- flx_dns_packet_consume_uint16(p, &type) < 0 ||
- flx_dns_packet_consume_uint16(p, &class) < 0)
+ if (avahi_dns_packet_consume_name(p, name, sizeof(name)) < 0 ||
+ avahi_dns_packet_consume_uint16(p, &type) < 0 ||
+ avahi_dns_packet_consume_uint16(p, &class) < 0)
return NULL;
- class &= ~ MDNS_CACHE_FLUSH;
+ *ret_unicast_response = !!(class & AVAHI_DNS_UNICAST_RESPONSE);
+ class &= ~AVAHI_DNS_UNICAST_RESPONSE;
- return flx_key_new(name, class, type);
+ return avahi_key_new(name, class, type);
}
-guint8* flx_dns_packet_append_key(flxDnsPacket *p, flxKey *k) {
+guint8* avahi_dns_packet_append_key(AvahiDnsPacket *p, AvahiKey *k, gboolean unicast_response) {
guint8 *t;
guint size;
size = p->size;
- if (!(t = flx_dns_packet_append_name(p, k->name)) ||
- !flx_dns_packet_append_uint16(p, k->type) ||
- !flx_dns_packet_append_uint16(p, k->class)) {
+ if (!(t = avahi_dns_packet_append_name(p, k->name)) ||
+ !avahi_dns_packet_append_uint16(p, k->type) ||
+ !avahi_dns_packet_append_uint16(p, k->class | (unicast_response ? AVAHI_DNS_UNICAST_RESPONSE : 0))) {
p->size = size;
return NULL;
}
return t;
}
-guint8* flx_dns_packet_append_record(flxDnsPacket *p, flxRecord *r, gboolean cache_flush) {
+guint8* avahi_dns_packet_append_record(AvahiDnsPacket *p, AvahiRecord *r, gboolean cache_flush) {
guint8 *t, *l, *start;
guint size;
size = p->size;
- if (!(t = flx_dns_packet_append_name(p, r->key->name)) ||
- !flx_dns_packet_append_uint16(p, r->key->type) ||
- !flx_dns_packet_append_uint16(p, cache_flush ? (r->key->class | MDNS_CACHE_FLUSH) : (r->key->class &~ MDNS_CACHE_FLUSH)) ||
- !flx_dns_packet_append_uint32(p, r->ttl) ||
- !(l = flx_dns_packet_append_uint16(p, 0)))
+ if (!(t = avahi_dns_packet_append_name(p, r->key->name)) ||
+ !avahi_dns_packet_append_uint16(p, r->key->type) ||
+ !avahi_dns_packet_append_uint16(p, cache_flush ? (r->key->class | AVAHI_DNS_CACHE_FLUSH) : (r->key->class &~ AVAHI_DNS_CACHE_FLUSH)) ||
+ !avahi_dns_packet_append_uint32(p, r->ttl) ||
+ !(l = avahi_dns_packet_append_uint16(p, 0)))
goto fail;
- start = flx_dns_packet_extend(p, 0);
+ start = avahi_dns_packet_extend(p, 0);
switch (r->key->type) {
- case FLX_DNS_TYPE_PTR:
- case FLX_DNS_TYPE_CNAME :
+ case AVAHI_DNS_TYPE_PTR:
+ case AVAHI_DNS_TYPE_CNAME :
- if (!(flx_dns_packet_append_name(p, r->data.ptr.name)))
+ if (!(avahi_dns_packet_append_name(p, r->data.ptr.name)))
goto fail;
break;
- case FLX_DNS_TYPE_SRV:
+ case AVAHI_DNS_TYPE_SRV:
- if (!flx_dns_packet_append_uint16(p, r->data.srv.priority) ||
- !flx_dns_packet_append_uint16(p, r->data.srv.weight) ||
- !flx_dns_packet_append_uint16(p, r->data.srv.port) ||
- !flx_dns_packet_append_name(p, r->data.srv.name))
+ if (!avahi_dns_packet_append_uint16(p, r->data.srv.priority) ||
+ !avahi_dns_packet_append_uint16(p, r->data.srv.weight) ||
+ !avahi_dns_packet_append_uint16(p, r->data.srv.port) ||
+ !avahi_dns_packet_append_name(p, r->data.srv.name))
goto fail;
break;
- case FLX_DNS_TYPE_HINFO:
- if (!flx_dns_packet_append_string(p, r->data.hinfo.cpu) ||
- !flx_dns_packet_append_string(p, r->data.hinfo.os))
+ case AVAHI_DNS_TYPE_HINFO:
+ if (!avahi_dns_packet_append_string(p, r->data.hinfo.cpu) ||
+ !avahi_dns_packet_append_string(p, r->data.hinfo.os))
goto fail;
break;
- case FLX_DNS_TYPE_TXT: {
+ case AVAHI_DNS_TYPE_TXT: {
guint8 *data;
guint size;
- size = flx_string_list_serialize(r->data.txt.string_list, NULL, 0);
+ size = avahi_string_list_serialize(r->data.txt.string_list, NULL, 0);
/* g_message("appending string: %u %p", size, r->data.txt.string_list); */
- if (!(data = flx_dns_packet_extend(p, size)))
+ if (!(data = avahi_dns_packet_extend(p, size)))
goto fail;
- flx_string_list_serialize(r->data.txt.string_list, data, size);
+ avahi_string_list_serialize(r->data.txt.string_list, data, size);
break;
}
- case FLX_DNS_TYPE_A:
+ case AVAHI_DNS_TYPE_A:
- if (!flx_dns_packet_append_bytes(p, &r->data.a.address, sizeof(r->data.a.address)))
+ if (!avahi_dns_packet_append_bytes(p, &r->data.a.address, sizeof(r->data.a.address)))
goto fail;
break;
- case FLX_DNS_TYPE_AAAA:
+ case AVAHI_DNS_TYPE_AAAA:
- if (!flx_dns_packet_append_bytes(p, &r->data.aaaa.address, sizeof(r->data.aaaa.address)))
+ if (!avahi_dns_packet_append_bytes(p, &r->data.aaaa.address, sizeof(r->data.aaaa.address)))
goto fail;
break;
default:
if (r->data.generic.size &&
- flx_dns_packet_append_bytes(p, r->data.generic.data, r->data.generic.size))
+ avahi_dns_packet_append_bytes(p, r->data.generic.data, r->data.generic.size))
goto fail;
break;
- size = flx_dns_packet_extend(p, 0) - start;
+ size = avahi_dns_packet_extend(p, 0) - start;
g_assert(size <= 0xFFFF);
/* g_message("appended %u", size); */
return NULL;
}
-gboolean flx_dns_packet_is_empty(flxDnsPacket *p) {
+gboolean avahi_dns_packet_is_empty(AvahiDnsPacket *p) {
g_assert(p);
- return p->size <= FLX_DNS_PACKET_HEADER_SIZE;
+ return p->size <= AVAHI_DNS_PACKET_HEADER_SIZE;
+}
+
+guint avahi_dns_packet_space(AvahiDnsPacket *p) {
+ g_assert(p);
+
+ g_assert(p->size <= p->max_size);
+
+ return p->max_size - p->size;
}