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Modify the routine that constructs DNS names to convert relative names to

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absolute names (add trailing dot) to keep the dns library happy.  Ticket 21054
This commit is contained in:
Shawn Routhier
2010-03-17 17:07:43 +00:00
parent 0585235c45
commit f4bc8261ca
2 changed files with 17 additions and 28 deletions
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6
RELNOTES
View File

@@ -39,12 +39,16 @@ The system has only been tested on Linux, FreeBSD, and Solaris, and may not
work on other platforms. Please report any problems and suggested fixes to
<dhcp-users@isc.org>.
Changes since 4.2.0a2
- Update the fsync code to work with the changes to the DDNS code. It now
uses a timer instead of noticing if there are no more packets to process.
- When constructing the DNS name structure from a text string append
the root to relative names. This satisfies a requirement in the DNS
library that names be absolute instead of relative and prevents DHCP
from crashing. Bug ticket 21054.
Changes since 4.2.0a1
- When using 'ignore client-updates;', the FQDN returned to the client

39
omapip/isclib.c
View File

@@ -157,7 +157,15 @@ dhcp_context_create(void) {
return(result);
}
/* Convert a string name into the proper structure for the isc routines */
/*
* Convert a string name into the proper structure for the isc routines
*
* Previously we allowed names without a trailing '.' however the current
* dns and dst code requires the names to end in a period. If the
* name doesn't have a trailing period add one as part of creating
* the dns name.
*/
isc_result_t
dhcp_isc_name(unsigned char *namestr,
dns_fixedname_t *namefix,
@@ -166,13 +174,13 @@ dhcp_isc_name(unsigned char *namestr,
size_t namelen;
isc_buffer_t b;
isc_result_t result;
namelen = strlen((char *)namestr);
isc_buffer_init(&b, namestr, namelen);
isc_buffer_add(&b, namelen);
dns_fixedname_init(namefix);
*name = dns_fixedname_name(namefix);
result = dns_name_fromtext(*name, &b, NULL, 0, NULL);
result = dns_name_fromtext(*name, &b, dns_rootname, 0, NULL);
isc_buffer_invalidate(&b);
return(result);
}
@@ -188,7 +196,6 @@ isclib_make_dst_key(char *inname,
dns_name_t *name;
dns_fixedname_t name0;
isc_buffer_t b;
int namelen;
isc_buffer_init(&b, secret, length);
isc_buffer_add(&b, length);
@@ -198,29 +205,7 @@ isclib_make_dst_key(char *inname,
return(DHCP_R_INVALIDARG);
}
/*
* Previously we allowed key names without a trailing '.'
* however the current dst code requires the names to end
* in a period. If the name doesn't have a trailing period
* add one before sending it to the dst code.
*/
namelen = strlen(inname);
if (inname[namelen-1] != '.') {
char *newname = NULL;
newname = (char *)dmalloc(namelen + 2, MDL);
if (newname == NULL) {
log_error("unable to allocate memory for key name");
return(ISC_R_NOMEMORY);
}
strcpy(newname, inname);
newname[namelen] = '.';
newname[namelen+1] = 0;
result = dhcp_isc_name((unsigned char *)newname, &name0, &name);
dfree(newname, MDL);
} else {
result = dhcp_isc_name((unsigned char *)inname, &name0, &name);
}
result = dhcp_isc_name((unsigned char *)inname, &name0, &name);
if (result != ISC_R_SUCCESS) {
return(result);
}