+/* vi: set sw=4 ts=4: */
/*
* utils.c
*
* Rani Assaf <rani@magic.metawire.com> 980929: resolve addresses
*/
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <arpa/inet.h>
-
-#include "utils.h"
#include "libbb.h"
+#include "utils.h"
#include "inet_common.h"
-int get_integer(int *val, char *arg, int base)
-{
- long res;
- char *ptr;
-
- if (!arg || !*arg)
- return -1;
- res = strtol(arg, &ptr, base);
- if (!ptr || ptr == arg || *ptr || res > INT_MAX || res < INT_MIN)
- return -1;
- *val = res;
- return 0;
-}
-
-int get_unsigned(unsigned *val, char *arg, int base)
-{
- unsigned long res;
- char *ptr;
-
- if (!arg || !*arg)
- return -1;
- res = strtoul(arg, &ptr, base);
- if (!ptr || ptr == arg || *ptr || res > UINT_MAX)
- return -1;
- *val = res;
- return 0;
-}
-
-int get_u32(__u32 * val, char *arg, int base)
+unsigned get_unsigned(char *arg, const char *errmsg)
{
unsigned long res;
char *ptr;
- if (!arg || !*arg)
- return -1;
- res = strtoul(arg, &ptr, base);
- if (!ptr || ptr == arg || *ptr || res > 0xFFFFFFFFUL)
- return -1;
- *val = res;
- return 0;
+ if (*arg) {
+ res = strtoul(arg, &ptr, 0);
+//FIXME: "" will be accepted too, is it correct?!
+ if (!*ptr && res <= UINT_MAX) {
+ return res;
+ }
+ }
+ invarg(arg, errmsg); /* does not return */
}
-int get_u16(__u16 * val, char *arg, int base)
+uint32_t get_u32(char *arg, const char *errmsg)
{
unsigned long res;
char *ptr;
- if (!arg || !*arg)
- return -1;
- res = strtoul(arg, &ptr, base);
- if (!ptr || ptr == arg || *ptr || res > 0xFFFF)
- return -1;
- *val = res;
- return 0;
+ if (*arg) {
+ res = strtoul(arg, &ptr, 0);
+//FIXME: "" will be accepted too, is it correct?!
+ if (!*ptr && res <= 0xFFFFFFFFUL) {
+ return res;
+ }
+ }
+ invarg(arg, errmsg); /* does not return */
}
-int get_u8(__u8 * val, char *arg, int base)
+uint16_t get_u16(char *arg, const char *errmsg)
{
unsigned long res;
char *ptr;
- if (!arg || !*arg)
- return -1;
- res = strtoul(arg, &ptr, base);
- if (!ptr || ptr == arg || *ptr || res > 0xFF)
- return -1;
- *val = res;
- return 0;
-}
-
-int get_s16(__s16 * val, char *arg, int base)
-{
- long res;
- char *ptr;
-
- if (!arg || !*arg)
- return -1;
- res = strtol(arg, &ptr, base);
- if (!ptr || ptr == arg || *ptr || res > 0x7FFF || res < -0x8000)
- return -1;
- *val = res;
- return 0;
-}
-
-int get_s8(__s8 * val, char *arg, int base)
-{
- long res;
- char *ptr;
-
- if (!arg || !*arg)
- return -1;
- res = strtol(arg, &ptr, base);
- if (!ptr || ptr == arg || *ptr || res > 0x7F || res < -0x80)
- return -1;
- *val = res;
- return 0;
+ if (*arg) {
+ res = strtoul(arg, &ptr, 0);
+//FIXME: "" will be accepted too, is it correct?!
+ if (!*ptr && res <= 0xFFFF) {
+ return res;
+ }
+ }
+ invarg(arg, errmsg); /* does not return */
}
-int get_addr_1(inet_prefix * addr, char *name, int family)
+int get_addr_1(inet_prefix *addr, char *name, int family)
{
- char *cp;
- unsigned char *ap = (unsigned char *) addr->data;
- int i;
-
memset(addr, 0, sizeof(*addr));
- if (strcmp(name, bb_INET_default) == 0 ||
- strcmp(name, "all") == 0 || strcmp(name, "any") == 0) {
+ if (strcmp(name, bb_str_default) == 0
+ || strcmp(name, "all") == 0
+ || strcmp(name, "any") == 0
+ ) {
addr->family = family;
addr->bytelen = (family == AF_INET6 ? 16 : 4);
addr->bitlen = -1;
addr->family = AF_INET;
if (family != AF_UNSPEC && family != AF_INET)
return -1;
+ if (inet_pton(AF_INET, name, addr->data) <= 0)
+ return -1;
addr->bytelen = 4;
addr->bitlen = -1;
- for (cp = name, i = 0; *cp; cp++) {
- if (*cp <= '9' && *cp >= '0') {
- ap[i] = 10 * ap[i] + (*cp - '0');
- continue;
- }
- if (*cp == '.' && ++i <= 3)
- continue;
- return -1;
- }
return 0;
}
-int get_prefix_1(inet_prefix * dst, char *arg, int family)
+static int get_prefix_1(inet_prefix *dst, char *arg, int family)
{
int err;
unsigned plen;
memset(dst, 0, sizeof(*dst));
- if (strcmp(arg, bb_INET_default) == 0 || strcmp(arg, "any") == 0) {
+ if (strcmp(arg, bb_str_default) == 0
+ || strcmp(arg, "all") == 0
+ || strcmp(arg, "any") == 0
+ ) {
dst->family = family;
- dst->bytelen = 0;
- dst->bitlen = 0;
+ /*dst->bytelen = 0; - done by memset */
+ /*dst->bitlen = 0;*/
return 0;
}
slash = strchr(arg, '/');
if (slash)
- *slash = 0;
+ *slash = '\0';
err = get_addr_1(dst, arg, family);
if (err == 0) {
- switch (dst->family) {
- case AF_INET6:
- dst->bitlen = 128;
- break;
- default:
- case AF_INET:
- dst->bitlen = 32;
- }
+ dst->bitlen = (dst->family == AF_INET6) ? 128 : 32;
if (slash) {
- if (get_integer(&plen, slash + 1, 0) || plen > dst->bitlen) {
+ inet_prefix netmask_pfx;
+
+ netmask_pfx.family = AF_UNSPEC;
+ plen = bb_strtou(slash + 1, NULL, 0);
+ if ((errno || plen > dst->bitlen)
+ && (get_addr_1(&netmask_pfx, slash + 1, family)))
err = -1;
- goto done;
+ else if (netmask_pfx.family == AF_INET) {
+ /* fill in prefix length of dotted quad */
+ uint32_t mask = ntohl(netmask_pfx.data[0]);
+ uint32_t host = ~mask;
+
+ /* a valid netmask must be 2^n - 1 */
+ if (!(host & (host + 1))) {
+ for (plen = 0; mask; mask <<= 1)
+ ++plen;
+ if (plen <= dst->bitlen) {
+ dst->bitlen = plen;
+ /* dst->flags |= PREFIXLEN_SPECIFIED; */
+ } else
+ err = -1;
+ } else
+ err = -1;
+ } else {
+ /* plain prefix */
+ dst->bitlen = plen;
}
- dst->bitlen = plen;
}
}
- done:
if (slash)
*slash = '/';
return err;
}
-int get_addr(inet_prefix * dst, char *arg, int family)
+int get_addr(inet_prefix *dst, char *arg, int family)
{
if (family == AF_PACKET) {
- bb_error_msg_and_die("\"%s\" may be inet address, but it is not allowed in this context.", arg);
+ bb_error_msg_and_die("\"%s\" may be inet %s, but it is not allowed in this context", arg, "address");
}
if (get_addr_1(dst, arg, family)) {
- bb_error_msg_and_die("an inet address is expected rather than \"%s\".", arg);
+ bb_error_msg_and_die("an %s %s is expected rather than \"%s\"", "inet", "address", arg);
}
return 0;
}
-int get_prefix(inet_prefix * dst, char *arg, int family)
+int get_prefix(inet_prefix *dst, char *arg, int family)
{
if (family == AF_PACKET) {
- bb_error_msg_and_die("\"%s\" may be inet address, but it is not allowed in this context.", arg);
+ bb_error_msg_and_die("\"%s\" may be inet %s, but it is not allowed in this context", arg, "prefix");
}
if (get_prefix_1(dst, arg, family)) {
- bb_error_msg_and_die("an inet address is expected rather than \"%s\".", arg);
+ bb_error_msg_and_die("an %s %s is expected rather than \"%s\"", "inet", "prefix", arg);
}
return 0;
}
-__u32 get_addr32(char *name)
+uint32_t get_addr32(char *name)
{
inet_prefix addr;
if (get_addr_1(&addr, name, AF_INET)) {
- bb_error_msg_and_die("an IP address is expected rather than \"%s\"", name);
+ bb_error_msg_and_die("an %s %s is expected rather than \"%s\"", "IP", "address", name);
}
return addr.data[0];
}
void incomplete_command(void)
{
- bb_error_msg("Command line is not complete. Try option \"help\"");
- exit(-1);
+ bb_error_msg_and_die("command line is not complete, try option \"help\"");
}
-void invarg(char *msg, char *arg)
+void invarg(const char *arg, const char *opt)
{
- bb_error_msg("argument \"%s\" is wrong: %s", arg, msg);
- exit(-1);
+ bb_error_msg_and_die(bb_msg_invalid_arg, arg, opt);
}
-void duparg(char *key, char *arg)
+void duparg(const char *key, const char *arg)
{
- bb_error_msg("duplicate \"%s\": \"%s\" is the second value.", key, arg);
- exit(-1);
+ bb_error_msg_and_die("duplicate \"%s\": \"%s\" is the second value", key, arg);
}
-void duparg2(char *key, char *arg)
+void duparg2(const char *key, const char *arg)
{
- bb_error_msg("either \"%s\" is duplicate, or \"%s\" is a garbage.", key, arg);
- exit(-1);
+ bb_error_msg_and_die("either \"%s\" is duplicate, or \"%s\" is garbage", key, arg);
}
-int matches(char *cmd, char *pattern)
+int inet_addr_match(inet_prefix *a, inet_prefix *b, int bits)
{
- int len = strlen(cmd);
-
- if (len > strlen(pattern)) {
- return -1;
- }
- return memcmp(pattern, cmd, len);
-}
-
-int inet_addr_match(inet_prefix * a, inet_prefix * b, int bits)
-{
- __u32 *a1 = a->data;
- __u32 *a2 = b->data;
- int words = bits >> 0x05;
+ uint32_t *a1 = a->data;
+ uint32_t *a2 = b->data;
+ int words = bits >> 5;
bits &= 0x1f;
return -1;
if (bits) {
- __u32 w1, w2;
- __u32 mask;
+ uint32_t w1, w2;
+ uint32_t mask;
w1 = a1[words];
w2 = a2[words];
return 0;
}
-int __iproute2_hz_internal;
-
-int __get_hz(void)
-{
- int hz = 0;
- FILE *fp = fopen("/proc/net/psched", "r");
-
- if (fp) {
- unsigned nom, denom;
-
- if (fscanf(fp, "%*08x%*08x%08x%08x", &nom, &denom) == 2)
- if (nom == 1000000)
- hz = denom;
- fclose(fp);
- }
- if (hz)
- return hz;
- return sysconf(_SC_CLK_TCK);
-}
-
-const char *rt_addr_n2a(int af, int ATTRIBUTE_UNUSED len,
+const char *rt_addr_n2a(int af,
void *addr, char *buf, int buflen)
{
switch (af) {
}
}
-
+#ifdef RESOLVE_HOSTNAMES
const char *format_host(int af, int len, void *addr, char *buf, int buflen)
{
-#ifdef RESOLVE_HOSTNAMES
if (resolve_hosts) {
struct hostent *h_ent;
default:;
}
}
- if (len > 0 && (h_ent = gethostbyaddr(addr, len, af)) != NULL) {
- snprintf(buf, buflen - 1, "%s", h_ent->h_name);
- return buf;
+ if (len > 0) {
+ h_ent = gethostbyaddr(addr, len, af);
+ if (h_ent != NULL) {
+ safe_strncpy(buf, h_ent->h_name, buflen);
+ return buf;
+ }
}
}
-#endif
- return rt_addr_n2a(af, len, addr, buf, buflen);
+ return rt_addr_n2a(af, addr, buf, buflen);
}
+#endif
projects / oweals / busybox.git / blobdiff