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-rw-r--r--resolv/ns_name.c194
1 files changed, 0 insertions, 194 deletions
diff --git a/resolv/ns_name.c b/resolv/ns_name.c
index 9f7ca4a506..f1a84ad8a6 100644
--- a/resolv/ns_name.c
+++ b/resolv/ns_name.c
@@ -31,9 +31,6 @@
/* Forward. */
-static int dn_find(const u_char *, const u_char *,
- const u_char * const *,
- const u_char * const *);
static int labellen(const u_char *);
/* Public. */
@@ -93,118 +90,6 @@ ns_name_ntol(const u_char *src, u_char *dst, size_t dstsiz)
}
/*%
- * Pack domain name 'domain' into 'comp_dn'.
- *
- * return:
- *\li Size of the compressed name, or -1.
- *
- * notes:
- *\li 'dnptrs' is an array of pointers to previous compressed names.
- *\li dnptrs[0] is a pointer to the beginning of the message. The array
- * ends with NULL.
- *\li 'lastdnptr' is a pointer to the end of the array pointed to
- * by 'dnptrs'.
- *
- * Side effects:
- *\li The list of pointers in dnptrs is updated for labels inserted into
- * the message as we compress the name. If 'dnptr' is NULL, we don't
- * try to compress names. If 'lastdnptr' is NULL, we don't update the
- * list.
- */
-int
-ns_name_pack(const u_char *src, u_char *dst, int dstsiz,
- const u_char **dnptrs, const u_char **lastdnptr)
-{
- u_char *dstp;
- const u_char **cpp, **lpp, *eob, *msg;
- const u_char *srcp;
- int n, l, first = 1;
-
- srcp = src;
- dstp = dst;
- eob = dstp + dstsiz;
- lpp = cpp = NULL;
- if (dnptrs != NULL) {
- if ((msg = *dnptrs++) != NULL) {
- for (cpp = dnptrs; *cpp != NULL; cpp++)
- (void)NULL;
- lpp = cpp; /*%< end of list to search */
- }
- } else
- msg = NULL;
-
- /* make sure the domain we are about to add is legal */
- l = 0;
- do {
- int l0;
-
- n = *srcp;
- if ((n & NS_CMPRSFLGS) == NS_CMPRSFLGS) {
- __set_errno (EMSGSIZE);
- return (-1);
- }
- if ((l0 = labellen(srcp)) < 0) {
- __set_errno (EINVAL);
- return(-1);
- }
- l += l0 + 1;
- if (l > MAXCDNAME) {
- __set_errno (EMSGSIZE);
- return (-1);
- }
- srcp += l0 + 1;
- } while (n != 0);
-
- /* from here on we need to reset compression pointer array on error */
- srcp = src;
- do {
- /* Look to see if we can use pointers. */
- n = *srcp;
- if (n != 0 && msg != NULL) {
- l = dn_find(srcp, msg, (const u_char * const *)dnptrs,
- (const u_char * const *)lpp);
- if (l >= 0) {
- if (dstp + 1 >= eob) {
- goto cleanup;
- }
- *dstp++ = (l >> 8) | NS_CMPRSFLGS;
- *dstp++ = l % 256;
- return (dstp - dst);
- }
- /* Not found, save it. */
- if (lastdnptr != NULL && cpp < lastdnptr - 1 &&
- (dstp - msg) < 0x4000 && first) {
- *cpp++ = dstp;
- *cpp = NULL;
- first = 0;
- }
- }
- /* copy label to buffer */
- if ((n & NS_CMPRSFLGS) == NS_CMPRSFLGS) {
- /* Should not happen. */
- goto cleanup;
- }
- n = labellen(srcp);
- if (n + 1 > eob - dstp) {
- goto cleanup;
- }
- memcpy(dstp, srcp, n + 1);
- srcp += n + 1;
- dstp += n + 1;
- } while (n != 0);
-
- if (dstp > eob) {
-cleanup:
- if (msg != NULL)
- *lpp = NULL;
- __set_errno (EMSGSIZE);
- return (-1);
- }
- return (dstp - dst);
-}
-libresolv_hidden_def (ns_name_pack)
-
-/*%
* Compress a domain name into wire format, using compression pointers.
*
* return:
@@ -250,85 +135,6 @@ ns_name_rollback(const u_char *src, const u_char **dnptrs,
/* Private. */
-/*%
- * Thinking in noninternationalized USASCII (per the DNS spec),
- * convert this character to lower case if it's upper case.
- */
-static int
-mklower(int ch) {
- if (ch >= 0x41 && ch <= 0x5A)
- return (ch + 0x20);
- return (ch);
-}
-
-/*%
- * Search for the counted-label name in an array of compressed names.
- *
- * return:
- *\li offset from msg if found, or -1.
- *
- * notes:
- *\li dnptrs is the pointer to the first name on the list,
- *\li not the pointer to the start of the message.
- */
-static int
-dn_find(const u_char *domain, const u_char *msg,
- const u_char * const *dnptrs,
- const u_char * const *lastdnptr)
-{
- const u_char *dn, *cp, *sp;
- const u_char * const *cpp;
- u_int n;
-
- for (cpp = dnptrs; cpp < lastdnptr; cpp++) {
- sp = *cpp;
- /*
- * terminate search on:
- * root label
- * compression pointer
- * unusable offset
- */
- while (*sp != 0 && (*sp & NS_CMPRSFLGS) == 0 &&
- (sp - msg) < 0x4000) {
- dn = domain;
- cp = sp;
- while ((n = *cp++) != 0) {
- /*
- * check for indirection
- */
- switch (n & NS_CMPRSFLGS) {
- case 0: /*%< normal case, n == len */
- n = labellen(cp - 1); /*%< XXX */
- if (n != *dn++)
- goto next;
-
- for ((void)NULL; n > 0; n--)
- if (mklower(*dn++) !=
- mklower(*cp++))
- goto next;
- /* Is next root for both ? */
- if (*dn == '\0' && *cp == '\0')
- return (sp - msg);
- if (*dn)
- continue;
- goto next;
- case NS_CMPRSFLGS: /*%< indirection */
- cp = msg + (((n & 0x3f) << 8) | *cp);
- break;
-
- default: /*%< illegal type */
- __set_errno (EMSGSIZE);
- return (-1);
- }
- }
- next: ;
- sp += *sp + 1;
- }
- }
- __set_errno (ENOENT);
- return (-1);
-}
-
/* Return the length of the encoded label starting at LP, or -1 for
compression references and extended label types. */
static int