diff options
Diffstat (limited to 'main/musl/1001-add-basic-dns-record-parsing-functions.patch')
| -rw-r--r-- | main/musl/1001-add-basic-dns-record-parsing-functions.patch | 246 |
1 files changed, 0 insertions, 246 deletions
diff --git a/main/musl/1001-add-basic-dns-record-parsing-functions.patch b/main/musl/1001-add-basic-dns-record-parsing-functions.patch deleted file mode 100644 index 82d795ad0f..0000000000 --- a/main/musl/1001-add-basic-dns-record-parsing-functions.patch +++ /dev/null @@ -1,246 +0,0 @@ -From 2f267b57ef0e145e397be571a000a11dc8188af2 Mon Sep 17 00:00:00 2001 -From: =?UTF-8?q?Timo=20Ter=C3=A4s?= <timo.teras@iki.fi> -Date: Mon, 14 Oct 2013 10:01:01 +0300 -Subject: [PATCH] add basic dns record parsing functions - ---- - include/arpa/nameser.h | 24 ++++++- - src/network/ns_parse.c | 172 +++++++++++++++++++++++++++++++++++++++++++++++++ - 2 files changed, 195 insertions(+), 1 deletion(-) - create mode 100644 src/network/ns_parse.c - -diff --git a/include/arpa/nameser.h b/include/arpa/nameser.h -index b9ee665..9c5f990 100644 ---- a/include/arpa/nameser.h -+++ b/include/arpa/nameser.h -@@ -1,6 +1,11 @@ - #ifndef _ARPA_NAMESER_H - #define _ARPA_NAMESER_H - -+#ifdef __cplusplus -+extern "C" { -+#endif -+ -+#include <sys/types.h> - #include <stdint.h> - - #define __NAMESER 19991006 -@@ -48,6 +53,8 @@ extern const struct _ns_flagdata _ns_flagdata[]; - #define ns_msg_end(handle) ((handle)._eom + 0) - #define ns_msg_size(handle) ((handle)._eom - (handle)._msg) - #define ns_msg_count(handle, section) ((handle)._counts[section] + 0) -+#define ns_msg_getflag(handle, flag) \ -+ (((handle)._flags & _ns_flagdata[flag].mask) >> _ns_flagdata[flag].shift) - - typedef struct __ns_rr { - char name[NS_MAXDNAME]; -@@ -332,7 +339,18 @@ typedef enum __ns_cert_types { - (cp) += NS_INT32SZ; \ - } while (0) - -- -+#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE) -+u_int ns_get16(const unsigned char *cp); -+u_long ns_get32(const unsigned char *cp); -+void ns_put16(u_int s, unsigned char *cp); -+void ns_put32(u_long l, unsigned char *cp); -+ -+int ns_initparse(const u_char *msg, int msglen, ns_msg *handle); -+int ns_parserr(ns_msg *handle, ns_sect section, int rrnum, ns_rr *rr); -+int ns_skiprr(const u_char *msg, const u_char *eom, ns_sect section, int count); -+int ns_name_uncompress(const u_char *msg, const u_char *eom, -+ const u_char *comp_dn, char *exp_dn, size_t length); -+#endif - - - #define __BIND 19950621 -@@ -464,4 +482,8 @@ typedef struct { - #define PUTSHORT NS_PUT16 - #define PUTLONG NS_PUT32 - -+#ifdef __cplusplus -+} -+#endif -+ - #endif -diff --git a/src/network/ns_parse.c b/src/network/ns_parse.c -new file mode 100644 -index 0000000..7e40237 ---- /dev/null -+++ b/src/network/ns_parse.c -@@ -0,0 +1,172 @@ -+#define _BSD_SOURCE -+#include <errno.h> -+#include <stddef.h> -+#include <resolv.h> -+#include <arpa/nameser.h> -+ -+const struct _ns_flagdata _ns_flagdata[16] = { -+ { 0x8000, 15 }, -+ { 0x7800, 11 }, -+ { 0x0400, 10 }, -+ { 0x0200, 9 }, -+ { 0x0100, 8 }, -+ { 0x0080, 7 }, -+ { 0x0040, 6 }, -+ { 0x0020, 5 }, -+ { 0x0010, 4 }, -+ { 0x000f, 0 }, -+ { 0x0000, 0 }, -+ { 0x0000, 0 }, -+ { 0x0000, 0 }, -+ { 0x0000, 0 }, -+ { 0x0000, 0 }, -+ { 0x0000, 0 }, -+}; -+ -+u_int ns_get16(const unsigned char *cp) -+{ -+ u_short s; -+ NS_GET16(s, cp); -+ return s; -+} -+ -+u_long ns_get32(const unsigned char *cp) -+{ -+ u_long l; -+ NS_GET32(l, cp); -+ return l; -+} -+ -+void ns_put16(u_int s, unsigned char *cp) -+{ -+ NS_PUT16(s, cp); -+} -+ -+void ns_put32(u_long l, unsigned char *cp) -+{ -+ NS_PUT32(l, cp); -+} -+ -+int ns_initparse(const unsigned char *msg, int msglen, ns_msg *handle) -+{ -+ int i, r; -+ -+ handle->_msg = msg; -+ handle->_eom = msg + msglen; -+ if (msglen < (2 + ns_s_max) * NS_INT16SZ) goto bad; -+ NS_GET16(handle->_id, msg); -+ NS_GET16(handle->_flags, msg); -+ for (i = 0; i < ns_s_max; i++) NS_GET16(handle->_counts[i], msg); -+ for (i = 0; i < ns_s_max; i++) { -+ if (handle->_counts[i]) { -+ handle->_sections[i] = msg; -+ r = ns_skiprr(msg, handle->_eom, i, handle->_counts[i]); -+ if (r < 0) return -1; -+ msg += r; -+ } else { -+ handle->_sections[i] = NULL; -+ } -+ } -+ if (msg != handle->_eom) goto bad; -+ handle->_sect = ns_s_max; -+ handle->_rrnum = -1; -+ handle->_msg_ptr = NULL; -+ return 0; -+bad: -+ errno = EMSGSIZE; -+ return -1; -+} -+ -+int ns_skiprr(const u_char *ptr, const u_char *eom, ns_sect section, int count) -+{ -+ const u_char *p = ptr; -+ int r; -+ -+ while (count--) { -+ r = dn_skipname(p, eom); -+ if (r < 0) goto bad; -+ p += r + 2 * NS_INT16SZ; -+ if (section != ns_s_qd) { -+ if (p + NS_INT32SZ + NS_INT16SZ > eom) goto bad; -+ p += NS_INT32SZ; -+ NS_GET16(r, p); -+ p += r; -+ } -+ } -+ if (p > eom) goto bad; -+ return ptr - p; -+bad: -+ errno = EMSGSIZE; -+ return -1; -+} -+ -+int ns_parserr(ns_msg *handle, ns_sect section, int rrnum, ns_rr *rr) -+{ -+ int r; -+ -+ if (section < 0 || section >= ns_s_max) goto bad; -+ if (section != handle->_sect) { -+ handle->_sect = section; -+ handle->_rrnum = 0; -+ handle->_msg_ptr = handle->_sections[section]; -+ } -+ if (rrnum == -1) rrnum = handle->_rrnum; -+ if (rrnum < 0 || rrnum >= handle->_counts[section]) goto bad; -+ if (rrnum < handle->_rrnum) { -+ handle->_rrnum = 0; -+ handle->_msg_ptr = handle->_sections[section]; -+ } -+ if (rrnum > handle->_rrnum) { -+ r = ns_skiprr(handle->_msg_ptr, handle->_eom, section, rrnum - handle->_rrnum); -+ if (r < 0) return -1; -+ handle->_msg_ptr += r; -+ handle->_rrnum = rrnum; -+ } -+ r = dn_expand(handle->_msg, handle->_eom, handle->_msg_ptr, rr->name, NS_MAXDNAME); -+ if (r < 0) return -1; -+ handle->_msg_ptr += r; -+ if (handle->_msg_ptr + 2 * NS_INT16SZ > handle->_eom) goto size; -+ NS_GET16(rr->type, handle->_msg_ptr); -+ NS_GET16(rr->rr_class, handle->_msg_ptr); -+ if (section != ns_s_qd) { -+ if (handle->_msg_ptr + NS_INT32SZ + NS_INT16SZ > handle->_eom) goto size; -+ NS_GET32(rr->ttl, handle->_msg_ptr); -+ NS_GET16(rr->rdlength, handle->_msg_ptr); -+ if (handle->_msg_ptr + rr->rdlength > handle->_eom) goto size; -+ rr->rdata = handle->_msg_ptr; -+ handle->_msg_ptr += rr->rdlength; -+ } else { -+ rr->ttl = 0; -+ rr->rdlength = 0; -+ rr->rdata = NULL; -+ } -+ handle->_rrnum++; -+ if (handle->_rrnum > handle->_counts[section]) { -+ handle->_sect = section + 1; -+ if (handle->_sect == ns_s_max) { -+ handle->_rrnum = -1; -+ handle->_msg_ptr = NULL; -+ } else { -+ handle->_rrnum = 0; -+ } -+ } -+ return 0; -+bad: -+ errno = ENODEV; -+ return -1; -+size: -+ errno = EMSGSIZE; -+ return -1; -+} -+ -+int __dn_expand(const unsigned char *, const unsigned char *, const unsigned char *, char *, int); -+ -+int ns_name_uncompress(const u_char *msg, const u_char *eom, -+ const u_char *src, char *dst, size_t dstsiz) -+{ -+ int r; -+ r = __dn_expand(msg, eom, src, dst, dstsiz); -+ if (r < 0) errno = EMSGSIZE; -+ return r; -+} -+ --- -2.0.2 - |