static lwres_result_t
lwres_conf_parsesearch(lwres_context_t *ctx, FILE *fp) {
int idx, delim;
char word[LWRES_CONFMAXLINELEN];
lwres_conf_t *confdata;
confdata = &ctx->confdata;
if (confdata->domainname != NULL) {
/*
* Search and domain are mutually exclusive.
*/
CTXFREE(confdata->domainname,
strlen(confdata->domainname) + 1);
confdata->domainname = NULL;
}
/*
* Remove any previous search definitions.
*/
for (idx = 0; idx < LWRES_CONFMAXSEARCH; idx++) {
if (confdata->search[idx] != NULL) {
CTXFREE(confdata->search[idx],
strlen(confdata->search[idx])+1);
confdata->search[idx] = NULL;
}
}
confdata->searchnxt = 0;
delim = getword(fp, word, sizeof(word));
if (strlen(word) == 0U)
return (LWRES_R_FAILURE); /* Nothing else on line. */
idx = 0;
while (strlen(word) > 0U) {
if (confdata->searchnxt == LWRES_CONFMAXSEARCH)
goto ignore; /* Too many domains. */
confdata->search[idx] = lwres_strdup(ctx, word);
if (confdata->search[idx] == NULL)
return (LWRES_R_FAILURE);
idx++;
confdata->searchnxt++;
ignore:
if (delim == EOF || delim == '\n')
break;
else
delim = getword(fp, word, sizeof(word));
}
return (LWRES_R_SUCCESS);
}
void
get_win32_searchlist(lwres_context_t *ctx) {
HKEY hKey;
BOOL keyFound = TRUE;
char searchlist[MAX_PATH];
DWORD searchlen = MAX_PATH;
char *cp;
lwres_conf_t *confdata;
REQUIRE(ctx != NULL);
confdata = &ctx->confdata;
memset(searchlist, 0, MAX_PATH);
if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, TCPIP_SUBKEY, 0, KEY_READ, &hKey)
!= ERROR_SUCCESS)
keyFound = FALSE;
if (keyFound == TRUE) {
/* Get the named directory */
if (RegQueryValueEx(hKey, "SearchList", NULL, NULL,
(LPBYTE)searchlist, &searchlen) != ERROR_SUCCESS)
keyFound = FALSE;
RegCloseKey(hKey);
}
confdata->searchnxt = 0;
if (!keyFound)
return;
cp = strtok((char *)searchlist, ", \0");
while (cp != NULL) {
if (confdata->searchnxt == LWRES_CONFMAXSEARCH)
break;
if (strlen(cp) <= MAX_PATH && strlen(cp) > 0) {
confdata->search[confdata->searchnxt] = lwres_strdup(ctx, cp);
if (confdata->search[confdata->searchnxt] != NULL)
confdata->searchnxt++;
}
cp = strtok(NULL, ", \0");
}
}
static lwres_result_t
lwres_conf_parsedomain(lwres_context_t *ctx, FILE *fp) {
char word[LWRES_CONFMAXLINELEN];
int res, i;
lwres_conf_t *confdata;
confdata = &ctx->confdata;
res = getword(fp, word, sizeof(word));
if (strlen(word) == 0U)
return (LWRES_R_FAILURE); /* Nothing else on line. */
else if (res == ' ' || res == '\t')
res = eatwhite(fp);
if (res != EOF && res != '\n')
return (LWRES_R_FAILURE); /* Extra junk on line. */
if (confdata->domainname != NULL)
CTXFREE(confdata->domainname,
strlen(confdata->domainname) + 1); /* */
/*
* Search and domain are mutually exclusive.
*/
for (i = 0; i < LWRES_CONFMAXSEARCH; i++) {
if (confdata->search[i] != NULL) {
CTXFREE(confdata->search[i],
strlen(confdata->search[i])+1);
confdata->search[i] = NULL;
}
}
confdata->searchnxt = 0;
confdata->domainname = lwres_strdup(ctx, word);
if (confdata->domainname == NULL)
return (LWRES_R_FAILURE);
return (LWRES_R_SUCCESS);
}
lwres_result_t
lwres_conf_parse(lwres_context_t *ctx, const char *filename) {
lwres_result_t ret;
lwres_conf_t *confdata;
FIXED_INFO * FixedInfo;
ULONG BufLen = sizeof(FIXED_INFO);
DWORD dwRetVal;
IP_ADDR_STRING *pIPAddr;
REQUIRE(ctx != NULL);
confdata = &ctx->confdata;
REQUIRE(confdata != NULL);
/* Use the resolver if there is one */
ret = generic_lwres_conf_parse(ctx, filename);
if ((ret != LWRES_R_NOTFOUND && ret != LWRES_R_SUCCESS) ||
(ret == LWRES_R_SUCCESS && confdata->nsnext > 0))
return (ret);
/*
* We didn't get any nameservers so we need to do this ourselves
*/
FixedInfo = (FIXED_INFO *) GlobalAlloc(GPTR, BufLen);
dwRetVal = GetNetworkParams(FixedInfo, &BufLen);
if (dwRetVal == ERROR_BUFFER_OVERFLOW) {
GlobalFree(FixedInfo);
FixedInfo = GlobalAlloc(GPTR, BufLen);
dwRetVal = GetNetworkParams(FixedInfo, &BufLen);
}
if (dwRetVal != ERROR_SUCCESS) {
GlobalFree(FixedInfo);
return (LWRES_R_FAILURE);
}
/* Get the search list from the registry */
get_win32_searchlist(ctx);
/* Use only if there is no search list */
if (confdata->searchnxt == 0 && strlen(FixedInfo->DomainName) > 0) {
confdata->domainname = lwres_strdup(ctx, FixedInfo->DomainName);
if (confdata->domainname == NULL) {
GlobalFree(FixedInfo);
return (LWRES_R_FAILURE);
}
} else
confdata->domainname = NULL;
/* Get the list of nameservers */
pIPAddr = &FixedInfo->DnsServerList;
while (pIPAddr) {
if (confdata->nsnext >= LWRES_CONFMAXNAMESERVERS)
break;
ret = lwres_create_addr(pIPAddr->IpAddress.String,
&confdata->nameservers[confdata->nsnext++], 1);
if (ret != LWRES_R_SUCCESS) {
GlobalFree(FixedInfo);
return (ret);
}
pIPAddr = pIPAddr ->Next;
}
GlobalFree(FixedInfo);
return (LWRES_R_SUCCESS);
}
