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authorSamba Release Account <samba-bugs@samba.org>1997-06-03 00:03:27 +0000
committerSamba Release Account <samba-bugs@samba.org>1997-06-03 00:03:27 +0000
commit9276c29e643c989edeef3b5572acc328acf97fdc (patch)
tree93b8d118bacb292e9e3f858e559aa5994b5834ca /source3
parent094f7ce427dba7299c8b08c695812d191e382d06 (diff)
downloadsamba-9276c29e643c989edeef3b5572acc328acf97fdc.tar.gz
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namedbname.c: Fixed problem with remove_name code that could cause core dump.
Jeremy jallison@whistle.com (This used to be commit 65f82fb153ef8b007d3f800a6e398545907ae95c)
Diffstat (limited to 'source3')
-rw-r--r--source3/namedbname.c174
1 files changed, 91 insertions, 83 deletions
diff --git a/source3/namedbname.c b/source3/namedbname.c
index 06e23b0a78..c91541cc81 100644
--- a/source3/namedbname.c
+++ b/source3/namedbname.c
@@ -53,14 +53,14 @@ uint16 nb_type = 0; /* samba's NetBIOS name type */
****************************************************************************/
void set_samba_nb_type(void)
{
- if (lp_wins_support() || (*lp_wins_server()))
- {
- nb_type = NB_MFLAG; /* samba is a 'hybrid' node type */
- }
- else
- {
- nb_type = NB_BFLAG; /* samba is broadcast-only node type */
- }
+ if (lp_wins_support() || (*lp_wins_server()))
+ {
+ nb_type = NB_MFLAG; /* samba is a 'hybrid' node type */
+ }
+ else
+ {
+ nb_type = NB_BFLAG; /* samba is broadcast-only node type */
+ }
}
@@ -113,7 +113,7 @@ static void add_name(struct subnet_record *d, struct name_record *n)
n->next = NULL;
n->prev = n2;
- if(d == wins_subnet)
+ if((d == wins_subnet) && lp_wins_support())
updatedlists = True;
}
@@ -135,10 +135,16 @@ void remove_name(struct subnet_record *d, struct name_record *n)
{
if (nlist->next) nlist->next->prev = nlist->prev;
if (nlist->prev) nlist->prev->next = nlist->next;
+
+ if(nlist == d->namelist)
+ d->namelist = nlist->next;
+
+ if(nlist->ip_flgs != NULL)
+ free(nlist->ip_flgs);
free(nlist);
}
- if(d == wins_subnet)
+ if((d == wins_subnet) && lp_wins_support())
updatedlists = True;
}
@@ -149,25 +155,25 @@ void remove_name(struct subnet_record *d, struct name_record *n)
struct name_record *find_name(struct name_record *n,
struct nmb_name *name, int search)
{
- struct name_record *ret;
+ struct name_record *ret;
- for (ret = n; ret; ret = ret->next)
- {
- if (name_equal(&ret->name,name))
- {
- /* self search: self names only */
- if ((search&FIND_SELF) == FIND_SELF && ret->source != SELF)
- {
- continue;
- }
- DEBUG(9,("find_name: found name %s(%02x)\n",
- name->name, name->name_type));
- return ret;
- }
- }
- DEBUG(9,("find_name: name %s(%02x) NOT FOUND\n", name->name,
- name->name_type));
- return NULL;
+ for (ret = n; ret; ret = ret->next)
+ {
+ if (name_equal(&ret->name,name))
+ {
+ /* self search: self names only */
+ if ((search&FIND_SELF) == FIND_SELF && ret->source != SELF)
+ {
+ continue;
+ }
+ DEBUG(9,("find_name: found name %s(%02x)\n",
+ name->name, name->name_type));
+ return ret;
+ }
+ }
+ DEBUG(9,("find_name: name %s(%02x) NOT FOUND\n", name->name,
+ name->name_type));
+ return NULL;
}
@@ -516,35 +522,37 @@ struct name_record *add_netbios_entry(struct subnet_record *d,
******************************************************************/
void expire_names(time_t t)
{
- struct name_record *n;
- struct name_record *next;
- struct subnet_record *d;
-
- /* expire old names */
- for (d = FIRST_SUBNET; d; d = NEXT_SUBNET_INCLUDING_WINS(d))
- {
- for (n = d->namelist; n; n = next)
- {
- next = n->next;
- if (n->death_time && n->death_time < t)
- {
- if (n->source == SELF) {
- DEBUG(3,("not expiring SELF name %s\n", namestr(&n->name)));
- n->death_time += 300;
- continue;
- }
- DEBUG(3,("Removing dead name %s\n", namestr(&n->name)));
+ struct name_record *n;
+ struct name_record *next;
+ struct subnet_record *d;
+
+ /* expire old names */
+ for (d = FIRST_SUBNET; d; d = NEXT_SUBNET_INCLUDING_WINS(d))
+ {
+ for (n = d->namelist; n; n = next)
+ {
+ next = n->next;
+ if (n->death_time && n->death_time < t)
+ {
+ if (n->source == SELF)
+ {
+ DEBUG(3,("not expiring SELF name %s\n", namestr(&n->name)));
+ n->death_time += 300;
+ continue;
+ }
+ DEBUG(3,("Removing dead name %s\n", namestr(&n->name)));
- if (n->prev) n->prev->next = n->next;
- if (n->next) n->next->prev = n->prev;
+ if (n->prev) n->prev->next = n->next;
+ if (n->next) n->next->prev = n->prev;
- if (d->namelist == n) d->namelist = n->next;
+ if (d->namelist == n) d->namelist = n->next;
- free(n->ip_flgs);
- free(n);
- }
- }
- }
+ if(n->ip_flgs != NULL)
+ free(n->ip_flgs);
+ free(n);
+ }
+ }
+ }
}
@@ -553,39 +561,39 @@ void expire_names(time_t t)
****************************************************************************/
struct name_record *dns_name_search(struct nmb_name *question, int Time)
{
- int name_type = question->name_type;
- char *qname = question->name;
- BOOL dns_type = (name_type == 0x20 || name_type == 0);
- struct in_addr dns_ip;
+ int name_type = question->name_type;
+ char *qname = question->name;
+ BOOL dns_type = (name_type == 0x20 || name_type == 0);
+ struct in_addr dns_ip;
- if (wins_subnet == NULL)
- return NULL;
+ if (wins_subnet == NULL)
+ return NULL;
- DEBUG(3,("Search for %s - ", namestr(question)));
+ DEBUG(3,("Search for %s - ", namestr(question)));
- /* only do DNS lookups if the query is for type 0x20 or type 0x0 */
- if (!dns_type)
- {
- DEBUG(3,("types 0x20 0x0 only: name not found\n"));
- return NULL;
- }
+ /* only do DNS lookups if the query is for type 0x20 or type 0x0 */
+ if (!dns_type)
+ {
+ DEBUG(3,("types 0x20 0x0 only: name not found\n"));
+ return NULL;
+ }
- /* look it up with DNS */
- dns_ip.s_addr = interpret_addr(qname);
-
- if (!dns_ip.s_addr)
- {
- /* no luck with DNS. We could possibly recurse here XXXX */
- DEBUG(3,("not found. no recursion.\n"));
- /* add the fail to WINS cache of names. give it 1 hour in the cache */
- add_netbios_entry(wins_subnet,qname,name_type,NB_ACTIVE,60*60,DNSFAIL,dns_ip,
- True, True);
- return NULL;
- }
+ /* look it up with DNS */
+ dns_ip.s_addr = interpret_addr(qname);
+
+ if (!dns_ip.s_addr)
+ {
+ /* no luck with DNS. We could possibly recurse here XXXX */
+ DEBUG(3,("not found. no recursion.\n"));
+ /* add the fail to WINS cache of names. give it 1 hour in the cache */
+ add_netbios_entry(wins_subnet,qname,name_type,NB_ACTIVE,60*60,DNSFAIL,dns_ip,
+ True, True);
+ return NULL;
+ }
- DEBUG(3,("found with DNS: %s\n", inet_ntoa(dns_ip)));
+ DEBUG(3,("found with DNS: %s\n", inet_ntoa(dns_ip)));
- /* add it to our WINS cache of names. give it 2 hours in the cache */
- return add_netbios_entry(wins_subnet,qname,name_type,NB_ACTIVE,2*60*60,DNS,dns_ip,
- True,True);
+ /* add it to our WINS cache of names. give it 2 hours in the cache */
+ return add_netbios_entry(wins_subnet,qname,name_type,NB_ACTIVE,2*60*60,DNS,dns_ip,
+ True,True);
}