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Diffstat (limited to 'i/pc104/initrd/conf/busybox/libbb/inet_common.c')
-rw-r--r--i/pc104/initrd/conf/busybox/libbb/inet_common.c235
1 files changed, 235 insertions, 0 deletions
diff --git a/i/pc104/initrd/conf/busybox/libbb/inet_common.c b/i/pc104/initrd/conf/busybox/libbb/inet_common.c
new file mode 100644
index 0000000..0ef91dc
--- /dev/null
+++ b/i/pc104/initrd/conf/busybox/libbb/inet_common.c
@@ -0,0 +1,235 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * stolen from net-tools-1.59 and stripped down for busybox by
+ * Erik Andersen <andersen@codepoet.org>
+ *
+ * Heavily modified by Manuel Novoa III Mar 12, 2001
+ *
+ *
+ */
+
+#include "libbb.h"
+#include "inet_common.h"
+
+int INET_resolve(const char *name, struct sockaddr_in *s_in, int hostfirst)
+{
+ struct hostent *hp;
+ struct netent *np;
+
+ /* Grmpf. -FvK */
+ s_in->sin_family = AF_INET;
+ s_in->sin_port = 0;
+
+ /* Default is special, meaning 0.0.0.0. */
+ if (!strcmp(name, bb_str_default)) {
+ s_in->sin_addr.s_addr = INADDR_ANY;
+ return 1;
+ }
+ /* Look to see if it's a dotted quad. */
+ if (inet_aton(name, &s_in->sin_addr)) {
+ return 0;
+ }
+ /* If we expect this to be a hostname, try hostname database first */
+#ifdef DEBUG
+ if (hostfirst) {
+ bb_error_msg("gethostbyname(%s)", name);
+ }
+#endif
+ if (hostfirst) {
+ hp = gethostbyname(name);
+ if (hp != NULL) {
+ memcpy(&s_in->sin_addr, hp->h_addr_list[0],
+ sizeof(struct in_addr));
+ return 0;
+ }
+ }
+ /* Try the NETWORKS database to see if this is a known network. */
+#ifdef DEBUG
+ bb_error_msg("getnetbyname(%s)", name);
+#endif
+ np = getnetbyname(name);
+ if (np != NULL) {
+ s_in->sin_addr.s_addr = htonl(np->n_net);
+ return 1;
+ }
+ if (hostfirst) {
+ /* Don't try again */
+ return -1;
+ }
+#ifdef DEBUG
+ res_init();
+ _res.options |= RES_DEBUG;
+#endif
+
+#ifdef DEBUG
+ bb_error_msg("gethostbyname(%s)", name);
+#endif
+ hp = gethostbyname(name);
+ if (hp == NULL) {
+ return -1;
+ }
+ memcpy(&s_in->sin_addr, hp->h_addr_list[0], sizeof(struct in_addr));
+ return 0;
+}
+
+/* cache */
+struct addr {
+ struct sockaddr_in addr;
+ char *name;
+ int host;
+ struct addr *next;
+};
+
+static struct addr *INET_nn = NULL; /* addr-to-name cache */
+
+/* numeric: & 0x8000: default instead of *,
+ * & 0x4000: host instead of net,
+ * & 0x0fff: don't resolve
+ */
+int INET_rresolve(char *name, size_t len, struct sockaddr_in *s_in,
+ int numeric, unsigned int netmask)
+{
+ struct hostent *ent;
+ struct netent *np;
+ struct addr *pn;
+ uint32_t ad, host_ad;
+ int host = 0;
+
+ /* Grmpf. -FvK */
+ if (s_in->sin_family != AF_INET) {
+#ifdef DEBUG
+ bb_error_msg("rresolve: unsupport address family %d !",
+ s_in->sin_family);
+#endif
+ errno = EAFNOSUPPORT;
+ return -1;
+ }
+ ad = s_in->sin_addr.s_addr;
+#ifdef DEBUG
+ bb_error_msg("rresolve: %08x, mask %08x, num %08x", (unsigned)ad, netmask, numeric);
+#endif
+ if (ad == INADDR_ANY) {
+ if ((numeric & 0x0FFF) == 0) {
+ if (numeric & 0x8000)
+ safe_strncpy(name, bb_str_default, len);
+ else
+ safe_strncpy(name, "*", len);
+ return 0;
+ }
+ }
+ if (numeric & 0x0FFF) {
+ safe_strncpy(name, inet_ntoa(s_in->sin_addr), len);
+ return 0;
+ }
+
+ if ((ad & (~netmask)) != 0 || (numeric & 0x4000))
+ host = 1;
+ pn = INET_nn;
+ while (pn != NULL) {
+ if (pn->addr.sin_addr.s_addr == ad && pn->host == host) {
+ safe_strncpy(name, pn->name, len);
+#ifdef DEBUG
+ bb_error_msg("rresolve: found %s %08x in cache",
+ (host ? "host" : "net"), (unsigned)ad);
+#endif
+ return 0;
+ }
+ pn = pn->next;
+ }
+
+ host_ad = ntohl(ad);
+ np = NULL;
+ ent = NULL;
+ if (host) {
+#ifdef DEBUG
+ bb_error_msg("gethostbyaddr (%08x)", (unsigned)ad);
+#endif
+ ent = gethostbyaddr((char *) &ad, 4, AF_INET);
+ if (ent != NULL) {
+ safe_strncpy(name, ent->h_name, len);
+ }
+ } else {
+#ifdef DEBUG
+ bb_error_msg("getnetbyaddr (%08x)", (unsigned)host_ad);
+#endif
+ np = getnetbyaddr(host_ad, AF_INET);
+ if (np != NULL) {
+ safe_strncpy(name, np->n_name, len);
+ }
+ }
+ if (!ent && !np) {
+ safe_strncpy(name, inet_ntoa(s_in->sin_addr), len);
+ }
+ pn = xmalloc(sizeof(struct addr));
+ pn->addr = *s_in;
+ pn->next = INET_nn;
+ pn->host = host;
+ pn->name = xstrdup(name);
+ INET_nn = pn;
+ return 0;
+}
+
+#ifdef CONFIG_FEATURE_IPV6
+
+int INET6_resolve(const char *name, struct sockaddr_in6 *sin6)
+{
+ struct addrinfo req, *ai;
+ int s;
+
+ memset(&req, '\0', sizeof req);
+ req.ai_family = AF_INET6;
+ s = getaddrinfo(name, NULL, &req, &ai);
+ if (s) {
+ bb_error_msg("getaddrinfo: %s: %d", name, s);
+ return -1;
+ }
+ memcpy(sin6, ai->ai_addr, sizeof(struct sockaddr_in6));
+ freeaddrinfo(ai);
+ return 0;
+}
+
+#ifndef IN6_IS_ADDR_UNSPECIFIED
+# define IN6_IS_ADDR_UNSPECIFIED(a) \
+ (((uint32_t *) (a))[0] == 0 && ((uint32_t *) (a))[1] == 0 && \
+ ((uint32_t *) (a))[2] == 0 && ((uint32_t *) (a))[3] == 0)
+#endif
+
+
+int INET6_rresolve(char *name, size_t len, struct sockaddr_in6 *sin6,
+ int numeric)
+{
+ int s;
+
+ /* Grmpf. -FvK */
+ if (sin6->sin6_family != AF_INET6) {
+#ifdef DEBUG
+ bb_error_msg("rresolve: unsupport address family %d!",
+ sin6->sin6_family);
+#endif
+ errno = EAFNOSUPPORT;
+ return -1;
+ }
+ if (numeric & 0x7FFF) {
+ inet_ntop(AF_INET6, &sin6->sin6_addr, name, len);
+ return 0;
+ }
+ if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
+ if (numeric & 0x8000) {
+ strcpy(name, bb_str_default);
+ } else {
+ name[0] = '*';
+ name[1] = '\0';
+ }
+ return 0;
+ }
+
+ s = getnameinfo((struct sockaddr *) sin6, sizeof(struct sockaddr_in6),
+ name, len, NULL, 0, 0);
+ if (s) {
+ bb_error_msg("getnameinfo failed");
+ return -1;
+ }
+ return 0;
+}
+
+#endif /* CONFIG_FEATURE_IPV6 */