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networking/interface.c: huke remaining big statics; use malloc for INET[6]_rresolve
return value. Went thru callers and adjusted them - code got smaller too. function old new delta ip_port_str - 126 +126 INET6_rresolve 165 182 +17 static.cache 20 24 +4 route_main 2092 2091 -1 INET_sprint 61 59 -2 INET_nn 4 - -4 INET6_sprint 59 53 -6 udp_do_one 518 508 -10 tcp_do_one 433 423 -10 raw_do_one 494 484 -10 traceroute_main 4117 4105 -12 INET_rresolve 334 321 -13 bb_displayroutes 494 456 -38 snprint_ip_port 244 - -244 static.buff 264 16 -248 ------------------------------------------------------------------------------ (add/remove: 1/2 grow/shrink: 2/10 up/down: 147/-598) Total: -451 bytes size busybox_old busybox_unstripped text data bss dec hex filename 751073 3048 14688 768809 bbb29 busybox_old 750873 3048 14440 768361 bb969 busybox_unstripped
This commit is contained in:
Denis Vlasenko
parent
1b16bdaebf
commit
6d9ea24611
@ -18,9 +18,9 @@ int INET_resolve(const char *name, struct sockaddr_in *s_in, int hostfirst);
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* & 0x4000: host instead of net,
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* & 0x0fff: don't resolve
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*/
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int INET_rresolve(char *name, size_t len, struct sockaddr_in *s_in,
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int numeric, unsigned int netmask);
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int INET6_resolve(const char *name, struct sockaddr_in6 *sin6);
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int INET6_rresolve(char *name, size_t len, struct sockaddr_in6 *sin6, int numeric);
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/* These return malloced string */
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char *INET_rresolve(struct sockaddr_in *s_in, int numeric, uint32_t netmask);
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char *INET6_rresolve(struct sockaddr_in6 *sin6, int numeric);
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@ -72,26 +72,24 @@ int INET_resolve(const char *name, struct sockaddr_in *s_in, int hostfirst)
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return 0;
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}
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/* cache */
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struct addr {
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struct sockaddr_in addr;
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char *name;
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int host;
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struct addr *next;
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};
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static struct addr *INET_nn = NULL; /* addr-to-name cache */
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/* numeric: & 0x8000: default instead of *,
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* & 0x4000: host instead of net,
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* & 0x0fff: don't resolve
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*/
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int INET_rresolve(char *name, size_t len, struct sockaddr_in *s_in,
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int numeric, unsigned int netmask)
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char *INET_rresolve(struct sockaddr_in *s_in, int numeric, uint32_t netmask)
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{
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struct hostent *ent;
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struct netent *np;
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/* addr-to-name cache */
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struct addr {
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struct addr *next;
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struct sockaddr_in addr;
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int host;
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char name[1];
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};
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static struct addr *cache = NULL;
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struct addr *pn;
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char *name;
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uint32_t ad, host_ad;
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int host = 0;
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@ -102,7 +100,7 @@ int INET_rresolve(char *name, size_t len, struct sockaddr_in *s_in,
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s_in->sin_family);
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#endif
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errno = EAFNOSUPPORT;
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return -1;
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return NULL;
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}
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ad = s_in->sin_addr.s_addr;
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#ifdef DEBUG
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@ -111,62 +109,58 @@ int INET_rresolve(char *name, size_t len, struct sockaddr_in *s_in,
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if (ad == INADDR_ANY) {
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if ((numeric & 0x0FFF) == 0) {
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if (numeric & 0x8000)
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safe_strncpy(name, bb_str_default, len);
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else
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safe_strncpy(name, "*", len);
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return 0;
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return xstrdup(bb_str_default);
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return xstrdup("*");
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}
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}
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if (numeric & 0x0FFF) {
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safe_strncpy(name, inet_ntoa(s_in->sin_addr), len);
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return 0;
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}
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if (numeric & 0x0FFF)
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return xstrdup(inet_ntoa(s_in->sin_addr));
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if ((ad & (~netmask)) != 0 || (numeric & 0x4000))
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host = 1;
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pn = INET_nn;
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while (pn != NULL) {
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pn = cache;
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while (pn) {
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if (pn->addr.sin_addr.s_addr == ad && pn->host == host) {
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safe_strncpy(name, pn->name, len);
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#ifdef DEBUG
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bb_error_msg("rresolve: found %s %08x in cache",
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(host ? "host" : "net"), (unsigned)ad);
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#endif
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return 0;
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return xstrdup(pn->name);
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}
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pn = pn->next;
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}
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host_ad = ntohl(ad);
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np = NULL;
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ent = NULL;
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name = NULL;
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if (host) {
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struct hostent *ent;
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#ifdef DEBUG
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bb_error_msg("gethostbyaddr (%08x)", (unsigned)ad);
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#endif
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ent = gethostbyaddr((char *) &ad, 4, AF_INET);
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if (ent != NULL) {
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safe_strncpy(name, ent->h_name, len);
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}
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if (ent)
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name = xstrdup(ent->h_name);
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} else {
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/* Hmmm... this is very rare to have named nets,
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* and this getnetbyaddr() call is the only one in bbox.
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* Maybe get rid of or make configurable? */
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struct netent *np;
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#ifdef DEBUG
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bb_error_msg("getnetbyaddr (%08x)", (unsigned)host_ad);
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#endif
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np = getnetbyaddr(host_ad, AF_INET);
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if (np != NULL) {
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safe_strncpy(name, np->n_name, len);
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if (np)
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name = xstrdup(np->n_name);
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}
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}
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if (!ent && !np) {
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safe_strncpy(name, inet_ntoa(s_in->sin_addr), len);
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}
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pn = xmalloc(sizeof(struct addr));
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if (!name)
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name = xstrdup(inet_ntoa(s_in->sin_addr));
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pn = xmalloc(sizeof(*pn) + strlen(name)); /* no '+ 1', it's already accounted for */
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pn->next = cache;
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pn->addr = *s_in;
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pn->next = INET_nn;
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pn->host = host;
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pn->name = xstrdup(name);
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INET_nn = pn;
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return 0;
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strcpy(pn->name, name);
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cache = pn;
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return name;
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}
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#ifdef CONFIG_FEATURE_IPV6
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@ -195,9 +189,9 @@ int INET6_resolve(const char *name, struct sockaddr_in6 *sin6)
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#endif
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int INET6_rresolve(char *name, size_t len, struct sockaddr_in6 *sin6,
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int numeric)
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char *INET6_rresolve(struct sockaddr_in6 *sin6, int numeric)
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{
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char name[128];
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int s;
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/* Grmpf. -FvK */
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@ -207,29 +201,25 @@ int INET6_rresolve(char *name, size_t len, struct sockaddr_in6 *sin6,
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sin6->sin6_family);
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#endif
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errno = EAFNOSUPPORT;
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return -1;
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return NULL;
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}
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if (numeric & 0x7FFF) {
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inet_ntop(AF_INET6, &sin6->sin6_addr, name, len);
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return 0;
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inet_ntop(AF_INET6, &sin6->sin6_addr, name, sizeof(name));
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return xstrdup(name);
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}
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if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
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if (numeric & 0x8000) {
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strcpy(name, bb_str_default);
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} else {
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name[0] = '*';
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name[1] = '\0';
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}
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return 0;
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if (numeric & 0x8000)
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return xstrdup(bb_str_default);
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return xstrdup("*");
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}
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s = getnameinfo((struct sockaddr *) sin6, sizeof(struct sockaddr_in6),
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name, len, NULL, 0, 0);
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name, sizeof(name), NULL, 0, 0);
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if (s) {
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bb_error_msg("getnameinfo failed");
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return -1;
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return NULL;
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}
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return 0;
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return xstrdup(name);
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}
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#endif /* CONFIG_FEATURE_IPV6 */
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@ -84,13 +84,12 @@ struct in6_ifreq {
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/* Display an Internet socket address. */
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static const char *INET_sprint(struct sockaddr *sap, int numeric)
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{
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static char buff[128];
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static char *buff;
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free(buff);
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if (sap->sa_family == 0xFFFF || sap->sa_family == 0)
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return "[NONE SET]";
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if (INET_rresolve(buff, sizeof(buff), (struct sockaddr_in *) sap,
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numeric, 0xffffff00) != 0)
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return NULL;
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buff = INET_rresolve((struct sockaddr_in *) sap, numeric, 0xffffff00);
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return buff;
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}
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@ -167,12 +166,12 @@ static const struct aftype inet_aftype = {
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/* dirty! struct sockaddr usually doesn't suffer for inet6 addresses, fst. */
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static const char *INET6_sprint(struct sockaddr *sap, int numeric)
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{
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static char buff[128];
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static char *buff;
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free(buff);
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if (sap->sa_family == 0xFFFF || sap->sa_family == 0)
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return "[NONE SET]";
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if (INET6_rresolve(buff, sizeof(buff), (struct sockaddr_in6 *) sap, numeric))
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return "[UNKNOWN]";
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buff = INET6_rresolve((struct sockaddr_in6 *) sap, numeric);
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return buff;
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}
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@ -120,50 +120,33 @@ static void build_ipv4_addr(char* local_addr, struct sockaddr_in* localaddr)
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((struct sockaddr *) localaddr)->sa_family = AF_INET;
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}
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static const char *get_sname(int port, const char *proto, int num)
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static const char *get_sname(int port, const char *proto, int numeric)
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{
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/* hummm, we return static buffer here!! */
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const char *str = itoa(ntohs(port));
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if (!num) {
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if (!port)
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return "*";
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if (!numeric) {
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struct servent *se = getservbyport(port, proto);
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if (se)
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str = se->s_name;
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return se->s_name;
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}
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if (!port) {
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str = "*";
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}
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return str;
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/* hummm, we may return static buffer here!! */
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return itoa(ntohs(port));
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}
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static void snprint_ip_port(char *ip_port, int size, struct sockaddr *addr, int port, const char *proto, int numeric)
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static char *ip_port_str(struct sockaddr *addr, int port, const char *proto, int numeric)
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{
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const char *port_name;
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int max_len;
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int port_name_len;
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enum { salen = USE_FEATURE_IPV6(sizeof(struct sockaddr_in6)) SKIP_FEATURE_IPV6(sizeof(struct sockaddr_in)) };
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char *host, *host_port;
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// TODO: replace by xmalloc_sockaddr2host?
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#if ENABLE_FEATURE_IPV6
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if (addr->sa_family == AF_INET6) {
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INET6_rresolve(ip_port, size, (struct sockaddr_in6 *)addr,
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(numeric & NETSTAT_NUMERIC) ? 0x0fff : 0);
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} else
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#endif
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{
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INET_rresolve(ip_port, size, (struct sockaddr_in *)addr,
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0x4000 | ((numeric & NETSTAT_NUMERIC) ? 0x0fff : 0),
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0xffffffff);
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}
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port_name = get_sname(htons(port), proto, numeric);
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/* Code which used "*" for INADDR_ANY is removed: it's ambiguous in IPv6,
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* while "0.0.0.0" is not. */
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max_len = (option_mask32 & OPT_widedisplay)
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? (PRINT_IP_MAX_SIZE_WIDE - 1)
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: (PRINT_IP_MAX_SIZE - 1);
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port_name_len = strlen(port_name);
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if ((strlen(ip_port) + port_name_len) > max_len)
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ip_port[max_len - port_name_len] = '\0';
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ip_port += strlen(ip_port);
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*ip_port++ = ':';
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strcpy(ip_port, port_name);
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host = numeric ? xmalloc_sockaddr2dotted_noport(addr, salen)
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: xmalloc_sockaddr2host_noport(addr, salen);
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host_port = xasprintf("%s:%s", host, get_sname(htons(port), proto, numeric));
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free(host);
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return host_port;
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}
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static void tcp_do_one(int lnr, const char *line)
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@ -206,14 +189,16 @@ static void tcp_do_one(int lnr, const char *line)
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if ((rem_port && (flags & NETSTAT_CONNECTED))
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|| (!rem_port && (flags & NETSTAT_LISTENING))
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) {
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snprint_ip_port(local_addr, sizeof(local_addr),
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char *l = ip_port_str(
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(struct sockaddr *) &localaddr, local_port,
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"tcp", flags & NETSTAT_NUMERIC);
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snprint_ip_port(rem_addr, sizeof(rem_addr),
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char *r = ip_port_str(
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(struct sockaddr *) &remaddr, rem_port,
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"tcp", flags & NETSTAT_NUMERIC);
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printf(net_conn_line,
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"tcp", rxq, txq, local_addr, rem_addr, tcp_state[state]);
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"tcp", rxq, txq, l, r, tcp_state[state]);
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free(l);
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free(r);
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}
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}
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@ -285,14 +270,16 @@ static void udp_do_one(int lnr, const char *line)
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if ((have_remaddr && (flags & NETSTAT_CONNECTED))
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|| (!have_remaddr && (flags & NETSTAT_LISTENING))
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) {
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snprint_ip_port(local_addr, sizeof(local_addr),
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char *l = ip_port_str(
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(struct sockaddr *) &localaddr, local_port,
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"udp", flags & NETSTAT_NUMERIC);
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snprint_ip_port(rem_addr, sizeof(rem_addr),
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char *r = ip_port_str(
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(struct sockaddr *) &remaddr, rem_port,
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"udp", flags & NETSTAT_NUMERIC);
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printf(net_conn_line,
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"udp", rxq, txq, local_addr, rem_addr, state_str);
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"udp", rxq, txq, l, r, state_str);
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free(l);
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free(r);
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}
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}
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}
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@ -339,14 +326,16 @@ static void raw_do_one(int lnr, const char *line)
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if ((have_remaddr && (flags & NETSTAT_CONNECTED))
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|| (!have_remaddr && (flags & NETSTAT_LISTENING))
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) {
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snprint_ip_port(local_addr, sizeof(local_addr),
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char *l = ip_port_str(
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(struct sockaddr *) &localaddr, local_port,
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"raw", flags & NETSTAT_NUMERIC);
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snprint_ip_port(rem_addr, sizeof(rem_addr),
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char *r = ip_port_str(
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(struct sockaddr *) &remaddr, rem_port,
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"raw", flags & NETSTAT_NUMERIC);
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printf(net_conn_line,
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"raw", rxq, txq, local_addr, rem_addr, itoa(state));
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"raw", rxq, txq, l, r, itoa(state));
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free(l);
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free(r);
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}
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}
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}
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@ -478,7 +478,7 @@ static void set_flags(char *flagstr, int flags)
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/* also used in netstat */
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void bb_displayroutes(int noresolve, int netstatfmt)
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{
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char devname[64], flags[16], sdest[16], sgw[16];
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char devname[64], flags[16], *sdest, *sgw;
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unsigned long d, g, m;
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int flgs, ref, use, metric, mtu, win, ir;
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struct sockaddr_in s_addr;
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@ -520,15 +520,14 @@ void bb_displayroutes(int noresolve, int netstatfmt)
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memset(&s_addr, 0, sizeof(struct sockaddr_in));
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s_addr.sin_family = AF_INET;
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s_addr.sin_addr.s_addr = d;
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INET_rresolve(sdest, sizeof(sdest), &s_addr,
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(noresolve | 0x8000), m); /* Default instead of *. */
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sdest = INET_rresolve(&s_addr, (noresolve | 0x8000), m); /* 'default' instead of '*' */
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s_addr.sin_addr.s_addr = g;
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INET_rresolve(sgw, sizeof(sgw), &s_addr,
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(noresolve | 0x4000), m); /* Host instead of net. */
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sgw = INET_rresolve(&s_addr, (noresolve | 0x4000), m); /* Host instead of net */
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mask.s_addr = m;
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printf("%-16s%-16s%-16s%-6s", sdest, sgw, inet_ntoa(mask), flags);
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/* "%15.15s" truncates hostnames, do we really want that? */
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printf("%-15.15s %-15.15s %-16s%-6s", sdest, sgw, inet_ntoa(mask), flags);
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free(sdest);
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free(sgw);
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if (netstatfmt) {
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printf("%5d %-5d %6d %s\n", mtu, win, ir, devname);
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} else {
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@ -541,7 +540,7 @@ void bb_displayroutes(int noresolve, int netstatfmt)
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static void INET6_displayroutes(int noresolve)
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{
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char addr6[128], naddr6[128];
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char addr6[128], *naddr6;
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/* In addr6x, we store both 40-byte ':'-delimited ipv6 addresses.
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* We read the non-delimited strings into the tail of the buffer
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* using fscanf and then modify the buffer by shifting forward
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@ -606,18 +605,19 @@ static void INET6_displayroutes(int noresolve)
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inet_pton(AF_INET6, addr6x + r,
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(struct sockaddr *) &snaddr6.sin6_addr);
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snaddr6.sin6_family = AF_INET6;
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INET6_rresolve(naddr6, sizeof(naddr6),
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(struct sockaddr_in6 *) &snaddr6,
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naddr6 = INET6_rresolve((struct sockaddr_in6 *) &snaddr6,
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0x0fff /* Apparently, upstream never resolves. */
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);
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|
||||
if (!r) { /* 1st pass */
|
||||
snprintf(addr6, sizeof(addr6), "%s/%d", naddr6, prefix_len);
|
||||
r += 40;
|
||||
free(naddr6);
|
||||
} else { /* 2nd pass */
|
||||
/* Print the info. */
|
||||
printf("%-43s %-39s %-5s %-6d %-2d %7d %-8s\n",
|
||||
addr6, naddr6, flags, metric, refcnt, use, iface);
|
||||
free(naddr6);
|
||||
break;
|
||||
}
|
||||
} while (1);
|
||||
|
||||
@ -802,22 +802,20 @@ packet_ok(unsigned char *buf, int cc, struct sockaddr_in *from, int seq)
|
||||
* numeric value, otherwise try for symbolic name.
|
||||
*/
|
||||
static inline void
|
||||
inetname(struct sockaddr_in *from)
|
||||
print_inetname(struct sockaddr_in *from)
|
||||
{
|
||||
const char *n = NULL;
|
||||
const char *ina;
|
||||
char name[257];
|
||||
|
||||
if (!nflag && from->sin_addr.s_addr != INADDR_ANY) {
|
||||
if (INET_rresolve(name, sizeof(name), from, 0x4000,
|
||||
0xffffffff) >= 0)
|
||||
n = name;
|
||||
}
|
||||
ina = inet_ntoa(from->sin_addr);
|
||||
if (nflag)
|
||||
printf(" %s", ina);
|
||||
else
|
||||
else {
|
||||
char *n = NULL;
|
||||
if (from->sin_addr.s_addr != INADDR_ANY)
|
||||
n = xmalloc_sockaddr2host_noport((struct sockaddr*)from, sizeof(*from));
|
||||
printf(" %s (%s)", (n ? n : ina), ina);
|
||||
free(n);
|
||||
}
|
||||
}
|
||||
|
||||
static inline void
|
||||
@ -830,7 +828,7 @@ print(unsigned char *buf, int cc, struct sockaddr_in *from)
|
||||
hlen = ip->ip_hl << 2;
|
||||
cc -= hlen;
|
||||
|
||||
inetname(from);
|
||||
print_inetname(from);
|
||||
#if ENABLE_FEATURE_TRACEROUTE_VERBOSE
|
||||
if (verbose)
|
||||
printf(" %d bytes to %s", cc, inet_ntoa(ip->ip_dst));
|
||||
|
||||
Loading…
Reference in New Issue
Block a user