diff options
Diffstat (limited to 'main/musl/1003-add-basic-dns-record-parsing-functions.patch')
| -rw-r--r-- | main/musl/1003-add-basic-dns-record-parsing-functions.patch | 272 |
1 files changed, 0 insertions, 272 deletions
diff --git a/main/musl/1003-add-basic-dns-record-parsing-functions.patch b/main/musl/1003-add-basic-dns-record-parsing-functions.patch deleted file mode 100644 index 9742e0945b..0000000000 --- a/main/musl/1003-add-basic-dns-record-parsing-functions.patch +++ /dev/null @@ -1,272 +0,0 @@ -From cc449aebaa572fbea2d400d1ee058f03f2638df2 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 | 89 ++++++++++++++++++------------- - src/network/ns_parse.c | 140 +++++++++++++++++++++++++++++++++++++++++++++++++ - 2 files changed, 192 insertions(+), 37 deletions(-) - create mode 100644 src/network/ns_parse.c - -diff --git a/include/arpa/nameser.h b/include/arpa/nameser.h -index b9ee665..1fc7339 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 -@@ -296,43 +301,49 @@ typedef enum __ns_cert_types { - #define NS_OPT_DNSSEC_OK 0x8000U - #define NS_OPT_NSID 3 - --#define NS_GET16(s, cp) do { \ -- register const unsigned char *t_cp = (const unsigned char *)(cp); \ -- (s) = ((uint16_t)t_cp[0] << 8) \ -- | ((uint16_t)t_cp[1]) \ -- ; \ -- (cp) += NS_INT16SZ; \ --} while (0) -- --#define NS_GET32(l, cp) do { \ -- register const unsigned char *t_cp = (const unsigned char *)(cp); \ -- (l) = ((uint32_t)t_cp[0] << 24) \ -- | ((uint32_t)t_cp[1] << 16) \ -- | ((uint32_t)t_cp[2] << 8) \ -- | ((uint32_t)t_cp[3]) \ -- ; \ -- (cp) += NS_INT32SZ; \ --} while (0) -- --#define NS_PUT16(s, cp) do { \ -- register uint16_t t_s = (uint16_t)(s); \ -- register unsigned char *t_cp = (unsigned char *)(cp); \ -- *t_cp++ = t_s >> 8; \ -- *t_cp = t_s; \ -- (cp) += NS_INT16SZ; \ --} while (0) -- --#define NS_PUT32(l, cp) do { \ -- register uint32_t t_l = (uint32_t)(l); \ -- register unsigned char *t_cp = (unsigned char *)(cp); \ -- *t_cp++ = t_l >> 24; \ -- *t_cp++ = t_l >> 16; \ -- *t_cp++ = t_l >> 8; \ -- *t_cp = t_l; \ -- (cp) += NS_INT32SZ; \ --} while (0) -- -- -+static __inline uint16_t ns_get16(const unsigned char *cp) -+{ -+ return ((uint16_t)cp[0] << 8) -+ | ((uint16_t)cp[1]); -+} -+ -+#define NS_GET16(s, cp) do { (s) = ns_get16(cp); (cp) += NS_INT16SZ; } while (0) -+ -+static __inline uint32_t ns_get32(const unsigned char *cp) -+{ -+ return ((uint32_t)cp[0] << 24) -+ | ((uint32_t)cp[1] << 16) -+ | ((uint32_t)cp[2] << 8) -+ | ((uint32_t)cp[3]); -+} -+ -+#define NS_GET32(s, cp) do { (s) = ns_get32(cp); (cp) += NS_INT32SZ; } while (0) -+ -+static __inline void ns_put16(uint16_t s, unsigned char *cp) -+{ -+ cp[0] = s >> 8; -+ cp[1] = s; -+} -+ -+#define NS_PUT16(s, cp) do { ns_put16(s, cp); (cp) += NS_INT16SZ; } while (0) -+ -+static __inline void ns_put32(uint32_t l, unsigned char *cp) -+{ -+ cp[0] = l >> 24; -+ cp[1] = l >> 16; -+ cp[2] = l >> 8; -+ cp[3] = l; -+} -+ -+#define NS_PUT32(s, cp) do { ns_put32(s, cp); (cp) += NS_INT32SZ; } while (0) -+ -+#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE) -+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 +475,8 @@ 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..5ef0d90 ---- /dev/null -+++ b/src/network/ns_parse.c -@@ -0,0 +1,140 @@ -+#define _BSD_SOURCE -+#include <errno.h> -+#include <stddef.h> -+#include <resolv.h> -+#include <arpa/nameser.h> -+ -+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; -+} -+ --- -1.8.4 - |