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-rw-r--r--extra/Configs/Config.in9
-rw-r--r--include/resolv.h2
-rw-r--r--libc/inet/Makefile.in7
-rw-r--r--libc/inet/resolv.c149
4 files changed, 92 insertions, 75 deletions
diff --git a/extra/Configs/Config.in b/extra/Configs/Config.in
index 58a5883b0..8eab394ee 100644
--- a/extra/Configs/Config.in
+++ b/extra/Configs/Config.in
@@ -672,6 +672,15 @@ config UCLIBC_USE_NETLINK
Most people can safely answer N.
+config UCLIBC_HAS_BSD_RES_CLOSE
+ bool "Support res_close() (bsd-compat)"
+ default n
+ help
+ Answer Y if you desperately want to support BSD compatibility in
+ the network code.
+
+ Most people will say N.
+
endmenu
diff --git a/include/resolv.h b/include/resolv.h
index e3c25da36..3434f5d8c 100644
--- a/include/resolv.h
+++ b/include/resolv.h
@@ -274,7 +274,9 @@ void fp_nquery (const u_char *, int, FILE *) __THROW;
void fp_query (const u_char *, FILE *) __THROW;
const char * hostalias (const char *) __THROW;
void p_query (const u_char *) __THROW;
+#ifdef __UCLIBC_HAS_BSD_RES_CLOSE__
void res_close (void) __THROW;
+#endif
int res_init (void) __THROW;
int res_isourserver (const struct sockaddr_in *) __THROW;
int res_mkquery (int, const char *, int, int, const u_char *,
diff --git a/libc/inet/Makefile.in b/libc/inet/Makefile.in
index 5545d640e..8cb8661c4 100644
--- a/libc/inet/Makefile.in
+++ b/libc/inet/Makefile.in
@@ -17,14 +17,17 @@ CSRC += inet_aton.c inet_addr.c inet_ntoa.c inet_makeaddr.c inet_lnaof.c \
# multi source resolv.c
CSRC += encodeh.c decodeh.c encoded.c decoded.c lengthd.c encodeq.c \
- decodeq.c lengthq.c encodea.c decodea.c encodep.c decodep.c \
- formquery.c dnslookup.c resolveaddress.c opennameservers.c \
+ decodeq.c lengthq.c encodea.c decodea.c \
+ dnslookup.c resolveaddress.c opennameservers.c \
closenameservers.c resolvename.c gethostbyname.c res_init.c \
res_query.c gethostbyaddr.c read_etc_hosts_r.c get_hosts_byname_r.c \
get_hosts_byaddr_r.c gethostbyname2.c getnameinfo.c gethostent.c \
gethostbyname_r.c gethostbyname2_r.c gethostbyaddr_r.c \
res_comp.c ns_name.c
+# unused ATM
+CSRC += encodep.c decodep.c formquery.c
+
# multi source socketcalls.c
CSRC += accept.c bind.c connect.c getpeername.c getsockname.c getsockopt.c \
listen.c recv.c recvfrom.c recvmsg.c send.c sendmsg.c sendto.c \
diff --git a/libc/inet/resolv.c b/libc/inet/resolv.c
index c2ff58242..b53d0a0f2 100644
--- a/libc/inet/resolv.c
+++ b/libc/inet/resolv.c
@@ -265,7 +265,7 @@ struct resolv_answer {
int aclass;
int ttl;
int rdlength;
- unsigned char * rdata;
+ const unsigned char * rdata;
int rdoffset;
char* buf;
size_t buflen;
@@ -300,21 +300,21 @@ extern int __dns_lookup(const char * name, int type, int nscount,
char ** nsip, unsigned char ** outpacket, struct resolv_answer * a) attribute_hidden;
extern int __encode_dotted(const char * dotted, unsigned char * dest, int maxlen) attribute_hidden;
-extern int __decode_dotted(const unsigned char * message, int offset,
+extern int __decode_dotted(const unsigned char * const message, int offset,
char * dest, int maxlen) attribute_hidden;
-extern int __length_dotted(const unsigned char * message, int offset) attribute_hidden;
+extern int __length_dotted(const unsigned char * const message, int offset) attribute_hidden;
extern int __encode_header(struct resolv_header * h, unsigned char * dest, int maxlen) attribute_hidden;
extern int __decode_header(unsigned char * data, struct resolv_header * h) attribute_hidden;
-extern int __encode_question(struct resolv_question * q,
+extern int __encode_question(const struct resolv_question * const q,
unsigned char * dest, int maxlen) attribute_hidden;
-extern int __decode_question(unsigned char * message, int offset,
+extern int __decode_question(const unsigned char * const message, int offset,
struct resolv_question * q) attribute_hidden;
extern int __encode_answer(struct resolv_answer * a,
unsigned char * dest, int maxlen) attribute_hidden;
-extern int __decode_answer(unsigned char * message, int offset,
+extern int __decode_answer(const unsigned char * message, int offset,
struct resolv_answer * a) attribute_hidden;
-extern int __length_question(unsigned char * message, int offset) attribute_hidden;
-extern int __open_nameservers(void) attribute_hidden;
+extern int __length_question(const unsigned char * const message, int offset) attribute_hidden;
+extern void __open_nameservers(void) attribute_hidden;
extern void __close_nameservers(void) attribute_hidden;
extern int __dn_expand(const u_char *, const u_char *, const u_char *,
char *, int);
@@ -373,7 +373,7 @@ int attribute_hidden __decode_header(unsigned char *data, struct resolv_header *
int attribute_hidden __encode_dotted(const char *dotted, unsigned char *dest, int maxlen)
{
- int used = 0;
+ unsigned used = 0;
while (dotted && *dotted) {
char *c = strchr(dotted, '.');
@@ -405,13 +405,13 @@ int attribute_hidden __encode_dotted(const char *dotted, unsigned char *dest, in
/* Decode a dotted string from nameserver transport-level encoding.
This routine understands compressed data. */
-int attribute_hidden __decode_dotted(const unsigned char *data, int offset,
+int attribute_hidden __decode_dotted(const unsigned char * const data, int offset,
char *dest, int maxlen)
{
int l;
- int measure = 1;
- int total = 0;
- int used = 0;
+ bool measure = 1;
+ unsigned total = 0;
+ unsigned used = 0;
if (!data)
return -1;
@@ -455,7 +455,7 @@ int attribute_hidden __decode_dotted(const unsigned char *data, int offset,
#endif
#ifdef L_lengthd
-int attribute_hidden __length_dotted(const unsigned char *data, int offset)
+int attribute_hidden __length_dotted(const unsigned char * const data, int offset)
{
int orig_offset = offset;
int l;
@@ -478,7 +478,7 @@ int attribute_hidden __length_dotted(const unsigned char *data, int offset)
#endif
#ifdef L_encodeq
-int attribute_hidden __encode_question(struct resolv_question *q,
+int attribute_hidden __encode_question(const struct resolv_question * const q,
unsigned char *dest, int maxlen)
{
int i;
@@ -503,7 +503,7 @@ int attribute_hidden __encode_question(struct resolv_question *q,
#endif
#ifdef L_decodeq
-int attribute_hidden __decode_question(unsigned char *message, int offset,
+int attribute_hidden __decode_question(const unsigned char * const message, int offset,
struct resolv_question *q)
{
char temp[256];
@@ -524,7 +524,7 @@ int attribute_hidden __decode_question(unsigned char *message, int offset,
#endif
#ifdef L_lengthq
-int attribute_hidden __length_question(unsigned char *message, int offset)
+int attribute_hidden __length_question(const unsigned char * const message, int offset)
{
int i;
@@ -568,7 +568,7 @@ int attribute_hidden __encode_answer(struct resolv_answer *a, unsigned char *des
#endif
#ifdef L_decodea
-int attribute_hidden __decode_answer(unsigned char *message, int offset,
+int attribute_hidden __decode_answer(const unsigned char *message, int offset,
struct resolv_answer *a)
{
char temp[256];
@@ -614,7 +614,7 @@ int __encode_packet(struct resolv_header *h,
unsigned char *dest, int maxlen)
{
int i, total = 0;
- int j;
+ unsigned j;
i = __encode_header(h, dest, maxlen);
if (i < 0)
@@ -717,15 +717,15 @@ int attribute_hidden __dns_lookup(const char *name, int type, int nscount, char
struct resolv_header h;
struct resolv_question q;
struct resolv_answer ma;
- int first_answer = 1;
- int retries = 0;
+ bool first_answer = 1;
+ unsigned retries = 0;
unsigned char * packet = malloc(PACKETSZ);
char *dns, *lookup = malloc(MAXDNAME);
int variant = -1;
struct sockaddr_in sa;
int local_ns = -1, local_id = -1;
#ifdef __UCLIBC_HAS_IPV6__
- int v6;
+ bool v6;
struct sockaddr_in6 sa6;
#endif
@@ -1032,14 +1032,14 @@ __UCLIBC_MUTEX_INIT(__resolv_lock, PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP);
* unix systems, we can have a list of nameservers after the keyword.
*/
-int attribute_hidden __open_nameservers()
+void attribute_hidden __open_nameservers()
{
FILE *fp;
int i;
#define RESOLV_ARGS 5
char szBuffer[128], *p, *argv[RESOLV_ARGS];
int argc;
- int rv = 0;
+ /* int rv = 0; */
__UCLIBC_MUTEX_LOCK(__resolv_lock);
if (__nameservers > 0) {
@@ -1091,11 +1091,11 @@ int attribute_hidden __open_nameservers()
DPRINTF("failed to open %s\n", "resolv.conf");
h_errno = NO_RECOVERY;
- rv = -1;
+ /* rv = -1; */
DONE:
__UCLIBC_MUTEX_UNLOCK(__resolv_lock);
- return rv;
+ /* return rv; */
}
#endif
@@ -1207,10 +1207,13 @@ int res_init(void)
}
libc_hidden_def(res_init)
+#ifdef __UCLIBC_HAS_BSD_RES_CLOSE__
void res_close( void )
{
- return;
+ __close_nameservers();
+ memset(&_res, 0, sizeof(_res));
}
+#endif
#endif
@@ -1270,6 +1273,10 @@ libc_hidden_def(res_query)
* If enabled, implement search rules until answer or unrecoverable failure
* is detected. Error code, if any, is left in h_errno.
*/
+#define __TRAILING_DOT (1<<0)
+#define __GOT_NODATA (1<<1)
+#define __GOT_SERVFAIL (1<<2)
+#define __TRIED_AS_IS (1<<3)
int res_search(name, class, type, answer, anslen)
const char *name; /* domain name */
int class, type; /* class and type of query */
@@ -1279,8 +1286,8 @@ int res_search(name, class, type, answer, anslen)
const char *cp, * const *domain;
HEADER *hp = (HEADER *)(void *)answer;
u_int dots;
- int trailing_dot, ret, saved_herrno;
- int got_nodata = 0, got_servfail = 0, tried_as_is = 0;
+ unsigned _state = 0;
+ int ret, saved_herrno;
u_long _res_options;
unsigned _res_ndots;
char **_res_dnsrch;
@@ -1298,9 +1305,9 @@ int res_search(name, class, type, answer, anslen)
dots = 0;
for (cp = name; *cp; cp++)
dots += (*cp == '.');
- trailing_dot = 0;
+
if (cp > name && *--cp == '.')
- trailing_dot++;
+ _state |= __TRAILING_DOT;
/*
* If there are dots in the name already, let's just give it a try
@@ -1315,7 +1322,7 @@ int res_search(name, class, type, answer, anslen)
if (ret > 0)
return (ret);
saved_herrno = h_errno;
- tried_as_is++;
+ _state |= __TRIED_AS_IS;
}
/*
@@ -1329,8 +1336,8 @@ int res_search(name, class, type, answer, anslen)
_res_dnsrch = _res.dnsrch;
__UCLIBC_MUTEX_UNLOCK(__resolv_lock);
if ((!dots && (_res_options & RES_DEFNAMES)) ||
- (dots && !trailing_dot && (_res_options & RES_DNSRCH))) {
- int done = 0;
+ (dots && !(_state & __TRAILING_DOT) && (_res_options & RES_DNSRCH))) {
+ bool done = 0;
for (domain = (const char * const *)_res_dnsrch;
*domain && !done;
@@ -1361,7 +1368,7 @@ int res_search(name, class, type, answer, anslen)
switch (h_errno) {
case NO_DATA:
- got_nodata++;
+ _state |= __GOT_NODATA;
/* FALLTHROUGH */
case HOST_NOT_FOUND:
/* keep trying */
@@ -1369,13 +1376,13 @@ int res_search(name, class, type, answer, anslen)
case TRY_AGAIN:
if (hp->rcode == SERVFAIL) {
/* try next search element, if any */
- got_servfail++;
+ _state |= __GOT_SERVFAIL;
break;
}
/* FALLTHROUGH */
default:
/* anything else implies that we're done */
- done++;
+ done = 1;
}
/*
* if we got here for some reason other than DNSRCH,
@@ -1385,7 +1392,7 @@ int res_search(name, class, type, answer, anslen)
_res_options = _res.options;
__UCLIBC_MUTEX_UNLOCK(__resolv_lock);
if (!(_res_options & RES_DNSRCH))
- done++;
+ done = 1;
}
}
@@ -1394,7 +1401,7 @@ int res_search(name, class, type, answer, anslen)
* note that we do this regardless of how many dots were in the
* name or whether it ends with a dot.
*/
- if (!tried_as_is) {
+ if (!(_state & __TRIED_AS_IS)) {
ret = res_querydomain(name, NULL, class, type, answer, anslen);
if (ret > 0)
return (ret);
@@ -1410,13 +1417,16 @@ int res_search(name, class, type, answer, anslen)
*/
if (saved_herrno != -1)
h_errno = saved_herrno;
- else if (got_nodata)
+ else if (_state & __GOT_NODATA)
h_errno = NO_DATA;
- else if (got_servfail)
+ else if (_state & __GOT_SERVFAIL)
h_errno = TRY_AGAIN;
return (-1);
}
-
+#undef __TRAILING_DOT
+#undef __GOT_NODATA
+#undef __GOT_SERVFAIL
+#undef __TRIED_AS_IS
/*
* Perform a call on res_query on the concatenation of name and domain,
* removing a trailing dot from name if domain is NULL.
@@ -1695,15 +1705,15 @@ int gethostent_r(struct hostent *result_buf, char *buf, size_t buflen,
if (__gethostent_fp == NULL) {
__open_etc_hosts(&__gethostent_fp);
if (__gethostent_fp == NULL) {
- *result=NULL;
- ret=TRY_AGAIN;
+ *result = NULL;
+ ret = TRY_AGAIN;
goto DONE;
}
}
ret = __read_etc_hosts_r(__gethostent_fp, NULL, AF_INET, GETHOSTENT,
result_buf, buf, buflen, result, h_errnop);
- if (__stay_open==0) {
+ if (__stay_open == 0) {
fclose(__gethostent_fp);
}
DONE:
@@ -1793,7 +1803,7 @@ int getnameinfo (const struct sockaddr *sa, socklen_t addrlen, char *host,
unsigned int flags)
{
int serrno = errno;
- int ok = 0;
+ unsigned ok;
struct hostent *h = NULL;
char domain[256];
@@ -1801,25 +1811,23 @@ int getnameinfo (const struct sockaddr *sa, socklen_t addrlen, char *host,
return EAI_BADFLAGS;
if (sa == NULL || addrlen < sizeof (sa_family_t))
- return EAI_FAMILY;
+ goto BAD_FAM;
- switch (sa->sa_family) {
- case AF_LOCAL:
- break;
- case AF_INET:
+ ok = sa->sa_family;
+ if (ok == AF_LOCAL) /* valid */;
+ else if (ok == AF_INET) {
if (addrlen < sizeof (struct sockaddr_in))
- return EAI_FAMILY;
- break;
+ goto BAD_FAM;
#ifdef __UCLIBC_HAS_IPV6__
- case AF_INET6:
+ } else if (ok == AF_INET6) {
if (addrlen < sizeof (struct sockaddr_in6))
- return EAI_FAMILY;
- break;
+ goto BAD_FAM;
#endif /* __UCLIBC_HAS_IPV6__ */
- default:
+ } else
+BAD_FAM:
return EAI_FAMILY;
- }
+ ok = 0;
if (host != NULL && hostlen > 0)
switch (sa->sa_family) {
case AF_INET:
@@ -1939,34 +1947,29 @@ int getnameinfo (const struct sockaddr *sa, socklen_t addrlen, char *host,
strncpy (host, "localhost", hostlen);
break;
- default:
+/*Already checked above default:
return EAI_FAMILY;
+*/
}
if (serv && (servlen > 0)) {
- switch (sa->sa_family) {
- case AF_INET:
-#ifdef __UCLIBC_HAS_IPV6__
- case AF_INET6:
-#endif /* __UCLIBC_HAS_IPV6__ */
+ if (sa->sa_family == AF_LOCAL) {
+ strncpy (serv, ((const struct sockaddr_un *) sa)->sun_path, servlen);
+ } else { /* AF_INET || AF_INET6 */
if (!(flags & NI_NUMERICSERV)) {
struct servent *s;
s = getservbyport (((const struct sockaddr_in *) sa)->sin_port,
((flags & NI_DGRAM) ? "udp" : "tcp"));
if (s) {
strncpy (serv, s->s_name, servlen);
- break;
+ goto DONE;
}
}
snprintf (serv, servlen, "%d",
ntohs (((const struct sockaddr_in *) sa)->sin_port));
- break;
-
- case AF_LOCAL:
- strncpy (serv, ((const struct sockaddr_un *) sa)->sun_path, servlen);
- break;
}
}
+DONE:
if (host && (hostlen > 0))
host[hostlen-1] = 0;
if (serv && (servlen > 0))
@@ -2399,8 +2402,8 @@ int gethostbyaddr_r (const void *addr, socklen_t len, int type,
for (i = len - 1; i >= 0; i--) {
qp += sprintf(qp, "%x.%x.", in6->s6_addr[i] & 0xf,
(in6->s6_addr[i] >> 4) & 0xf);
- }
- strcpy(qp, "ip6.int");
+ }
+ strcpy(qp, "ip6.int");
#endif /* __UCLIBC_HAS_IPV6__ */
}
@@ -2452,7 +2455,7 @@ int gethostbyaddr_r (const void *addr, socklen_t len, int type,
} else {
result_buf->h_length = sizeof(*in6);
#endif /* __UCLIBC_HAS_IPV6__ */
- }
+ }
result_buf->h_addr_list = (char **) addr_list;
result_buf->h_aliases = alias;
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-11 16:02:36 +0000