X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=networking%2Flibiproute%2Futils.c;h=bf053a54bf114bba1fea830043b4a9274a080cc1;hb=2f094ae82106e91cb210e79ddc2e5285377b549e;hp=f92179c40e03b6430eb7420d2fbbf7083e422ef0;hpb=5af906e7c834301a0f237b50e1a1474ce0cf6da0;p=oweals%2Fbusybox.git diff --git a/networking/libiproute/utils.c b/networking/libiproute/utils.c index f92179c40..bf053a54b 100644 --- a/networking/libiproute/utils.c +++ b/networking/libiproute/utils.c @@ -1,132 +1,92 @@ /* vi: set sw=4 ts=4: */ /* - * utils.c + * Licensed under GPLv2 or later, see file LICENSE in this source tree. * - * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. - * - * Authors: Alexey Kuznetsov, + * Authors: Alexey Kuznetsov, * * Changes: * - * Rani Assaf 980929: resolve addresses + * Rani Assaf 980929: resolve addresses */ - #include "libbb.h" - -#include -#include - #include "utils.h" #include "inet_common.h" -int get_integer(int *val, char *arg, int base) +unsigned FAST_FUNC get_hz(void) { - long res; - char *ptr; + static unsigned hz_internal; + FILE *fp; - 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; -} + if (hz_internal) + return hz_internal; -int get_unsigned(unsigned *val, char *arg, int base) -{ - unsigned long res; - char *ptr; + fp = fopen_for_read("/proc/net/psched"); + if (fp) { + unsigned nom, denom; - if (!arg || !*arg) - return -1; - res = strtoul(arg, &ptr, base); - if (!ptr || ptr == arg || *ptr || res > UINT_MAX) - return -1; - *val = res; - return 0; + if (fscanf(fp, "%*08x%*08x%08x%08x", &nom, &denom) == 2) + if (nom == 1000000) + hz_internal = denom; + fclose(fp); + } + if (!hz_internal) + hz_internal = bb_clk_tck(); + return hz_internal; } -int get_u32(__u32 * val, char *arg, int base) +unsigned FAST_FUNC 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_1_to_2(arg, errmsg); /* does not return */ } -int get_u16(__u16 * val, char *arg, int base) +uint32_t FAST_FUNC 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_1_to_2(arg, errmsg); /* does not return */ } -int get_u8(__u8 * val, char *arg, int base) +uint16_t FAST_FUNC 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_1_to_2(arg, errmsg); /* does not return */ } -int get_addr_1(inet_prefix * addr, char *name, int family) +int FAST_FUNC 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, "default") == 0 + || strcmp(name, "all") == 0 + || strcmp(name, "any") == 0 + ) { addr->family = family; addr->bytelen = (family == AF_INET6 ? 16 : 4); addr->bitlen = -1; @@ -144,133 +104,156 @@ int get_addr_1(inet_prefix * addr, char *name, int family) return 0; } - addr->family = AF_INET; if (family != AF_UNSPEC && family != AF_INET) 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; + + /* Try to parse it as IPv4 */ + addr->family = AF_INET; +#if 0 /* Doesn't handle e.g. "10.10", for example, "ip r l root 10.10/16" */ + if (inet_pton(AF_INET, name, addr->data) <= 0) return -1; +#else + { + unsigned i = 0; + unsigned n = 0; + const char *cp = name - 1; + while (*++cp) { + if ((unsigned char)(*cp - '0') <= 9) { + n = 10 * n + (unsigned char)(*cp - '0'); + if (n >= 256) + return -1; + ((uint8_t*)addr->data)[i] = n; + continue; + } + if (*cp == '.' && ++i <= 3) { + n = 0; + continue; + } + return -1; + } } +#endif + addr->bytelen = 4; + addr->bitlen = -1; + return 0; } -int get_prefix_1(inet_prefix * dst, char *arg, int family) +static void get_prefix_1(inet_prefix *dst, char *arg, int family) { - int err; - int plen; char *slash; memset(dst, 0, sizeof(*dst)); - if (strcmp(arg, bb_INET_default) == 0 || strcmp(arg, "any") == 0) { + if (strcmp(arg, "default") == 0 + || strcmp(arg, "all") == 0 + || strcmp(arg, "any") == 0 + ) { dst->family = family; - dst->bytelen = 0; - dst->bitlen = 0; - return 0; + /*dst->bytelen = 0; - done by memset */ + /*dst->bitlen = 0;*/ + return; } slash = strchr(arg, '/'); if (slash) - *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; - } + *slash = '\0'; + + if (get_addr_1(dst, arg, family) == 0) { + dst->bitlen = (dst->family == AF_INET6) ? 128 : 32; if (slash) { - if (get_integer(&plen, slash + 1, 0) || plen > dst->bitlen) { - err = -1; - goto done; + unsigned plen; + 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) != 0 + ) { + goto bad; + } + 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)) + goto bad; + + for (plen = 0; mask; mask <<= 1) + ++plen; + if (plen > dst->bitlen) + goto bad; + /* dst->flags |= PREFIXLEN_SPECIFIED; */ } dst->bitlen = plen; } } - done: + if (slash) *slash = '/'; - return err; + return; + bad: + bb_error_msg_and_die("an %s %s is expected rather than \"%s\"", "inet", "prefix", arg); } -int get_addr(inet_prefix * dst, char *arg, int family) +int FAST_FUNC 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) +void FAST_FUNC 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); - } - return 0; + get_prefix_1(dst, arg, family); } -__u32 get_addr32(char *name) +uint32_t FAST_FUNC 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); -} - -void invarg(const char * const arg, const char * const opt) +char** FAST_FUNC next_arg(char **argv) { - bb_error_msg(bb_msg_invalid_arg, arg, opt); - exit(-1); + if (!*++argv) + bb_error_msg_and_die("command line is not complete, try \"help\""); + return argv; } -void duparg(char *key, char *arg) +void FAST_FUNC invarg_1_to_2(const char *arg, const char *opt) { - bb_error_msg("duplicate \"%s\": \"%s\" is the second value", key, arg); - exit(-1); + bb_error_msg_and_die(bb_msg_invalid_arg_to, arg, opt); } -void duparg2(char *key, char *arg) +void FAST_FUNC duparg(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("duplicate \"%s\": \"%s\" is the second value", key, arg); } -int matches(char *cmd, char *pattern) +void FAST_FUNC duparg2(const char *key, const char *arg) { - int len = strlen(cmd); - - return strncmp(pattern, cmd, len); + bb_error_msg_and_die("either \"%s\" is duplicate, or \"%s\" is garbage", key, arg); } -int inet_addr_match(inet_prefix * a, inet_prefix * b, int bits) +int FAST_FUNC inet_addr_match(const inet_prefix *a, const inet_prefix *b, int bits) { - __u32 *a1 = a->data; - __u32 *a2 = b->data; - int words = bits >> 0x05; + const uint32_t *a1 = a->data; + const uint32_t *a2 = b->data; + int words = bits >> 5; bits &= 0x1f; @@ -279,8 +262,8 @@ int inet_addr_match(inet_prefix * a, inet_prefix * b, int bits) return -1; if (bits) { - __u32 w1, w2; - __u32 mask; + uint32_t w1, w2; + uint32_t mask; w1 = a1[words]; w2 = a2[words]; @@ -294,42 +277,22 @@ int inet_addr_match(inet_prefix * a, inet_prefix * b, int bits) 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, - void *addr, char *buf, int buflen) +const char* FAST_FUNC rt_addr_n2a(int af, void *addr) { switch (af) { case AF_INET: case AF_INET6: - return inet_ntop(af, addr, buf, buflen); + return inet_ntop(af, addr, + auto_string(xzalloc(INET6_ADDRSTRLEN)), INET6_ADDRSTRLEN + ); default: return "???"; } } - -const char *format_host(int af, int len, void *addr, char *buf, int buflen) -{ #ifdef RESOLVE_HOSTNAMES +const char* FAST_FUNC format_host(int af, int len, void *addr) +{ if (resolve_hosts) { struct hostent *h_ent; @@ -344,11 +307,13 @@ const char *format_host(int af, int len, void *addr, char *buf, int buflen) 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) { + return auto_string(xstrdup(h_ent->h_name)); + } } } -#endif - return rt_addr_n2a(af, len, addr, buf, buflen); + return rt_addr_n2a(af, addr); } +#endif