static lwres_result_t
lwres_conf_parsesortlist(lwres_context_t *ctx, FILE *fp) {
int delim, res, idx;
char word[LWRES_CONFMAXLINELEN];
char *p;
lwres_conf_t *confdata;
confdata = &ctx->confdata;
delim = getword(fp, word, sizeof(word));
if (strlen(word) == 0U)
return (LWRES_R_FAILURE); /* Empty line after keyword. */
while (strlen(word) > 0U) {
if (confdata->sortlistnxt == LWRES_CONFMAXSORTLIST)
return (LWRES_R_FAILURE); /* Too many values. */
p = strchr(word, '/');
if (p != NULL)
*p++ = '\0';
idx = confdata->sortlistnxt;
res = lwres_create_addr(word, &confdata->sortlist[idx].addr, 1);
if (res != LWRES_R_SUCCESS)
return (res);
if (p != NULL) {
res = lwres_create_addr(p,
&confdata->sortlist[idx].mask,
0);
if (res != LWRES_R_SUCCESS)
return (res);
} else {
/*
* Make up a mask.
*/
confdata->sortlist[idx].mask =
confdata->sortlist[idx].addr;
memset(&confdata->sortlist[idx].mask.address, 0xff,
confdata->sortlist[idx].addr.length);
}
confdata->sortlistnxt++;
if (delim == EOF || delim == '\n')
break;
else
delim = getword(fp, word, sizeof(word));
}
return (LWRES_R_SUCCESS);
}
static lwres_result_t
lwres_conf_parselwserver(lwres_context_t *ctx, FILE *fp) {
char word[LWRES_CONFMAXLINELEN];
int res;
lwres_conf_t *confdata;
confdata = &ctx->confdata;
if (confdata->lwnext == LWRES_CONFMAXLWSERVERS)
return (LWRES_R_SUCCESS);
res = getword(fp, word, sizeof(word));
if (strlen(word) == 0U)
return (LWRES_R_FAILURE); /* Nothing on line. */
else if (res == ' ' || res == '\t')
res = eatwhite(fp);
if (res != EOF && res != '\n')
return (LWRES_R_FAILURE); /* Extra junk on line. */
res = lwres_create_addr(word,
&confdata->lwservers[confdata->lwnext++], 1);
if (res != LWRES_R_SUCCESS)
return (res);
return (LWRES_R_SUCCESS);
}
static lwres_result_t
lwres_conf_parsenameserver(lwres_context_t *ctx, FILE *fp) {
char word[LWRES_CONFMAXLINELEN];
int res;
lwres_conf_t *confdata;
lwres_addr_t address;
confdata = &ctx->confdata;
if (confdata->nsnext == LWRES_CONFMAXNAMESERVERS)
return (LWRES_R_SUCCESS);
res = getword(fp, word, sizeof(word));
if (strlen(word) == 0U)
return (LWRES_R_FAILURE); /* Nothing on line. */
else if (res == ' ' || res == '\t')
res = eatwhite(fp);
if (res != EOF && res != '\n')
return (LWRES_R_FAILURE); /* Extra junk on line. */
res = lwres_create_addr(word, &address, 1);
if (res == LWRES_R_SUCCESS &&
((address.family == LWRES_ADDRTYPE_V4 && ctx->use_ipv4 == 1) ||
(address.family == LWRES_ADDRTYPE_V6 && ctx->use_ipv6 == 1))) {
confdata->nameservers[confdata->nsnext++] = address;
}
return (LWRES_R_SUCCESS);
}
static lwres_result_t
lwres_conf_parsenameserver(lwres_context_t *ctx, FILE *fp) {
char word[LWRES_CONFMAXLINELEN];
char pbuf[NI_MAXSERV];
char *cp, *q;
const char *errstr;
lwres_uint16_t port;
int res;
lwres_conf_t *confdata;
lwres_addr_t address;
confdata = &ctx->confdata;
if (confdata->nsnext == LWRES_CONFMAXNAMESERVERS)
return (LWRES_R_SUCCESS);
res = getword(fp, word, sizeof(word));
if (strlen(word) == 0U)
return (LWRES_R_FAILURE); /* Nothing on line. */
else if (res == ' ' || res == '\t')
res = eatwhite(fp);
if (res != EOF && res != '\n')
return (LWRES_R_FAILURE); /* Extra junk on line. */
/* Handle addresses enclosed in []
* (adapted from lib/libc/net/res_init.c) */
*pbuf = '\0';
cp = word;
if (*cp == '[') {
cp++;
if ((q = strchr(cp, ']')) == NULL)
return (LWRES_R_FAILURE);
*q++ = '\0';
/* Extract port, if specified */
if (*q++ == ':') {
if (strlcpy(pbuf, q, sizeof(pbuf)) >= sizeof(pbuf))
return (LWRES_R_FAILURE);
}
}
if (*pbuf != '\0') {
port = strtonum(pbuf, 1, 65535, &errstr);
if (errstr)
return (LWRES_R_FAILURE);
} else {
port = NAMESERVER_PORT;
}
res = lwres_create_addr(cp, &address, 1);
if (res == LWRES_R_SUCCESS) {
confdata->nameservers[confdata->nsnext] = address;
confdata->nameserverports[confdata->nsnext++] = port;
}
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);
}
