--- libelwix/src/net.c 2013/06/03 13:59:26 1.2.2.3 +++ libelwix/src/net.c 2018/03/15 14:49:56 1.17.10.1 @@ -3,7 +3,7 @@ * by Michael Pounov * * $Author: misho $ -* $Id: net.c,v 1.2.2.3 2013/06/03 13:59:26 misho Exp $ +* $Id: net.c,v 1.17.10.1 2018/03/15 14:49:56 misho Exp $ * ************************************************************************** The ELWIX and AITNET software is distributed under the following @@ -12,7 +12,7 @@ terms: All of the documentation and software included in the ELWIX and AITNET Releases is copyrighted by ELWIX - Sofia/Bulgaria -Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013 +Copyright 2004 - 2018 by Michael Pounov . All rights reserved. Redistribution and use in source and binary forms, with or without @@ -46,7 +46,158 @@ SUCH DAMAGE. #include "global.h" +#ifndef __linux__ +static char hexlist[] = "0123456789abcdef"; + +#ifndef HAVE_LINK_ADDR + +/* States*/ +#define NAMING 0 +#define GOTONE 1 +#define GOTTWO 2 +#define RESET 3 +/* Inputs */ +#define DIGIT (4*0) +#define END (4*1) +#define DELIM (4*2) +#define LETTER (4*3) + +void +link_addr(const char *addr, struct sockaddr_dl *sdl) +{ + char *cp = sdl->sdl_data; + char *cplim = sdl->sdl_len + (char *)sdl; + int byte = 0, state = NAMING, new; + + bzero((char *)&sdl->sdl_family, sdl->sdl_len - 1); + sdl->sdl_family = AF_LINK; + do { + state &= ~LETTER; + if ((*addr >= '0') && (*addr <= '9')) { + new = *addr - '0'; + } else if ((*addr >= 'a') && (*addr <= 'f')) { + new = *addr - 'a' + 10; + } else if ((*addr >= 'A') && (*addr <= 'F')) { + new = *addr - 'A' + 10; + } else if (*addr == 0) { + state |= END; + } else if (state == NAMING && + (((*addr >= 'A') && (*addr <= 'Z')) || + ((*addr >= 'a') && (*addr <= 'z')))) + state |= LETTER; + else + state |= DELIM; + addr++; + switch (state /* | INPUT */) { + case NAMING | DIGIT: + case NAMING | LETTER: + *cp++ = addr[-1]; + continue; + case NAMING | DELIM: + state = RESET; + sdl->sdl_nlen = cp - sdl->sdl_data; + continue; + case GOTTWO | DIGIT: + *cp++ = byte; + /* FALLTHROUGH */ + case RESET | DIGIT: + state = GOTONE; + byte = new; + continue; + case GOTONE | DIGIT: + state = GOTTWO; + byte = new + (byte << 4); + continue; + default: /* | DELIM */ + state = RESET; + *cp++ = byte; + byte = 0; + continue; + case GOTONE | END: + case GOTTWO | END: + *cp++ = byte; + /* FALLTHROUGH */ + case RESET | END: + break; + } + break; + } while (cp < cplim); + sdl->sdl_alen = cp - LLADDR(sdl); + new = cp - (char *)sdl; + if (new > sizeof(*sdl)) + sdl->sdl_len = new; + return; +} +#endif + + /* + * e_link_ntoa() - String ethernet address from link address + * + * @sdl = link address + * return: =NULL error or !=NULL ethernet address, should be e_free() + */ +char * +e_link_ntoa(const struct sockaddr_dl *sdl) +{ + static char obuf[64]; + char *out = obuf; + int i; + u_char *in = (u_char*) LLADDR(sdl); + u_char *inlim = in + sdl->sdl_alen; + int firsttime = 1; + + if (sdl->sdl_nlen) { + memcpy(obuf, sdl->sdl_data, sdl->sdl_nlen); + out += sdl->sdl_nlen; + if (sdl->sdl_alen) + *out++ = '!'; + } + + while (in < inlim) { + if (firsttime) + firsttime ^= firsttime; + else + *out++ = ':'; + + i = *in++; + if (i > 0xf) { + out[1] = hexlist[i & 0xf]; + i >>= 4; + } else { + out[1] = hexlist[i]; + i = 0; + } + + out[0] = hexlist[i]; + out += 2; + } + + *out = 0; + return obuf; +} + +/* + * e_link_addr() - String ethernet address to link address + * + * @mac = ethernet address + * @sdl = link address + * return: -1 error or 0 ok + */ +int +e_link_addr(const char *mac, struct sockaddr_dl * __restrict sdl) +{ + if (!mac || !sdl) + return -1; + if (!sdl->sdl_len) + sdl->sdl_len = sizeof(struct sockaddr_dl); + + link_addr(mac, sdl); + return 0; +} +#endif + +/* * e_ether_ntoa() - Convert ethernet address to string * * @n = ethernet address structure, like struct ether_addr @@ -55,16 +206,16 @@ SUCH DAMAGE. * return: NULL error or !=NULL string a */ char * -e_ether_ntoa(const struct e_ether_addr *n, char * __restrict a, int len) +e_ether_ntoa(const ether_addr_t * __restrict n, char * __restrict a, int len) { if (!n || !a) return NULL; memset(a, 0, len); - if (snprintf(a, len, "%02x:%02x:%02x:%02x:%02x:%02x", - n->ether_addr_octet[0], n->ether_addr_octet[1], - n->ether_addr_octet[2], n->ether_addr_octet[3], - n->ether_addr_octet[4], n->ether_addr_octet[5]) < 17) + if (snprintf(a, len, "%02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx", + n->octet[0], n->octet[1], + n->octet[2], n->octet[3], + n->octet[4], n->octet[5]) < 17) return NULL; return a; @@ -77,26 +228,24 @@ e_ether_ntoa(const struct e_ether_addr *n, char * __re * @e = ethernet address structure, like struct ether_addr * return: NULL error or !=NULL ethernet address structure */ -struct e_ether_addr * -e_ether_aton(const char *a, struct e_ether_addr *e) +ether_addr_t * +e_ether_aton(const char *a, ether_addr_t * __restrict e) { int i; - u_int o0, o1, o2, o3, o4, o5; if (!a || !e) return NULL; - i = sscanf(a, "%x:%x:%x:%x:%x:%x", &o0, &o1, &o2, &o3, &o4, &o5); + i = sscanf(a, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx", + &e->octet[0], + &e->octet[1], + &e->octet[2], + &e->octet[3], + &e->octet[4], + &e->octet[5]); if (i != 6) return NULL; - e->ether_addr_octet[0] = o0; - e->ether_addr_octet[1] = o1; - e->ether_addr_octet[2] = o2; - e->ether_addr_octet[3] = o3; - e->ether_addr_octet[4] = o4; - e->ether_addr_octet[5] = o5; - return e; } @@ -136,6 +285,9 @@ e_n2port(sockaddr_t * __restrict addr) const char * e_n2addr(sockaddr_t * __restrict addr, ait_val_t * __restrict val) { +#ifndef __linux__ + char *s; +#endif char str[INET6_ADDRSTRLEN] = { 0 }; const char *ret = NULL; @@ -161,6 +313,15 @@ e_n2addr(sockaddr_t * __restrict addr, ait_val_t * __r case AF_LOCAL: ret = addr->sun.sun_path; break; +#ifndef __linux__ + case AF_LINK: + if (!(s = e_link_ntoa(&addr->sdl))) { + LOGERR; + return ret; + } else + ret = s; + break; +#endif default: elwix_SetErr(EPROTONOSUPPORT, "Unsuported address family %d", addr->sa.sa_family); @@ -177,25 +338,22 @@ e_n2addr(sockaddr_t * __restrict addr, ait_val_t * __r * @psHost = Hostname * @port = Port * @addr = Network address structure - * return: NULL error or !=NULL network structure + * return: 0 is error or >0 length of network structure */ -sockaddr_t * +socklen_t e_gethostbyname(const char *psHost, u_short port, sockaddr_t * __restrict addr) { struct hostent *host = NULL; if (!psHost || !addr) - return NULL; + return 0; if (*psHost != '/') { /* resolver */ - if (!addr->sa.sa_family) - host = gethostbyname(psHost); - else - host = gethostbyname2(psHost, addr->sa.sa_family); + host = gethostbyname2(psHost, !strchr(psHost, ':') ? AF_INET : AF_INET6); if (!host) { elwix_SetErr(EINVAL, "Resolver #%d - %s", h_errno, hstrerror(h_errno)); - return NULL; + return 0; } else { memset(addr, 0, sizeof(sockaddr_t)); addr->sa.sa_family = host->h_addrtype; @@ -208,32 +366,66 @@ e_gethostbyname(const char *psHost, u_short port, sock switch (addr->sa.sa_family) { case AF_INET: +#ifndef __linux__ addr->sin.sin_len = sizeof(struct sockaddr_in); +#endif addr->sin.sin_family = AF_INET; addr->sin.sin_port = htons(port); memcpy(&addr->sin.sin_addr, host->h_addr, sizeof addr->sin.sin_addr); - return addr; + return sizeof addr->sin; case AF_INET6: +#ifndef __linux__ addr->sin6.sin6_len = sizeof(struct sockaddr_in6); +#endif addr->sin6.sin6_family = AF_INET6; addr->sin6.sin6_port = htons(port); memcpy(&addr->sin6.sin6_addr, host->h_addr, sizeof addr->sin6.sin6_addr); - return addr; + return sizeof addr->sin6; case AF_LOCAL: +#ifndef __linux__ addr->sun.sun_len = sizeof(struct sockaddr_un); +#endif addr->sun.sun_family = AF_LOCAL; memset(addr->sun.sun_path, 0, sizeof addr->sun.sun_path); snprintf(addr->sun.sun_path, sizeof addr->sun.sun_path, "%s-%hu", psHost, port); - return addr; + return sizeof addr->sun; default: elwix_SetErr(EPROTONOSUPPORT, "Unsuported address family %d", addr->sa.sa_family); break; } - return NULL; + return 0; } /* + * e_addrlen() - Get address length from network structure + * + * @addr = address + * return: 0 is error or >0 length of network structure + */ +socklen_t +e_addrlen(const sockaddr_t *addr) +{ + if (!addr) + return 0; + + switch (addr->sa.sa_family) { + case AF_INET: + return sizeof addr->sin; + case AF_INET6: + return sizeof addr->sin6; + case AF_LOCAL: + return sizeof addr->sun; +#ifndef __linux__ + case AF_LINK: + return sizeof addr->sdl; +#endif + } + + return E_SOCKADDR_MAX; +} + +/* * e_addrcmp() - Compare network addresses * * @a = 1st address @@ -260,9 +452,13 @@ e_addrcmp(sockaddr_t * __restrict a, sockaddr_t * __re else return memcmp(&a->sin6.sin6_addr, &b->sin6.sin6_addr, sizeof a->sin6.sin6_addr); +#ifndef __linux__ case AF_LINK: return memcmp(&a->sdl.sdl_data, &b->sdl.sdl_data, sizeof a->sdl.sdl_data); +#endif + case AF_UNSPEC: + return memcmp(a, b, sizeof(sockaddr_t)); } return (int) !!(a - b); @@ -323,3 +519,262 @@ e_innet(netaddr_t * __restrict net, inaddr_t * __restr return !!ret; } + +/* + * e_getnet() - Get network from string + * + * @net = Network string (format: ) + * return: NULL error or !=NULL network should be e_free() + */ +netaddr_t * +e_getnet(const char *net) +{ + netaddr_t *n; + char *str, *wrk; + struct hostent *host; + + n = e_malloc(sizeof(netaddr_t)); + if (!n) { + LOGERR; + return NULL; + } else + memset(n, 0, sizeof(netaddr_t)); + str = e_strdup(net); + if (!str) { + LOGERR; + e_free(n); + return NULL; + } + wrk = strchr(str, '/'); + if (wrk) + *wrk++ = 0; + + host = gethostbyname2(str, strchr(str, ':') ? AF_INET6 : AF_INET); + if (!host) { + elwix_SetErr(EINVAL, "Resolver #%d - %s", h_errno, hstrerror(h_errno)); + e_free(str); + e_free(n); + return NULL; + } + switch (host->h_addrtype) { + case AF_INET: +#ifndef __linux__ + n->addr.sin.sin_len = sizeof(struct sockaddr_in); +#endif + n->addr.sin.sin_family = host->h_addrtype; + memcpy(&n->addr.sin.sin_addr, host->h_addr, sizeof n->addr.sin.sin_addr); + if (wrk && strtol(wrk, NULL, 10) != 32) + n->mask.in.s_addr = E_CIDRMASK(strtol(wrk, NULL, 10)); + else + n->mask.in.s_addr = 0xFFFFFFFF; + break; + case AF_INET6: +#ifndef __linux__ + n->addr.sin6.sin6_len = sizeof(struct sockaddr_in6); +#endif + n->addr.sin6.sin6_family = host->h_addrtype; + memcpy(&n->addr.sin6.sin6_addr, host->h_addr, sizeof n->addr.sin6.sin6_addr); + /* TODO: should support ipv6 mask */ + break; + default: + elwix_SetErr(EINVAL, "Unsupported family #%d", host->h_addrtype); + e_free(str); + e_free(n); + return NULL; + } + + e_free(str); + return n; +} + +/* + * e_ether_addr() - Get or set ethernet address from interface name + * + * @ifname = interface name + * @addr = if addr is !=NULL then set new ethernet address + * return: NULL error or !=NULL get current ethernet address should be e_free() + */ +ether_addr_t * +e_ether_addr(const char *ifname, ether_addr_t * __restrict addr) +{ + ether_addr_t *a = NULL; + struct ifaddrs *p, *ifa = NULL; + struct ifreq req; + int s; + sockaddr_t sa = E_SOCKADDR_INIT; + + memset(&req, 0, sizeof req); + if (!ifname) + return NULL; + + getifaddrs(&ifa); + for (p = ifa; p && p->ifa_name; p = p->ifa_next) { +#ifndef __linux__ + if (p->ifa_name && !strcmp(p->ifa_name, ifname) && p->ifa_addr && + p->ifa_addr->sa_family == AF_LINK) { + a = e_malloc(sizeof(ether_addr_t)); + if (a) + memcpy(a, LLADDR((struct sockaddr_dl*) p->ifa_addr), + sizeof(ether_addr_t)); + + /* should set mac address */ + if (addr && (s = socket(AF_LOCAL, SOCK_DGRAM, 0)) > 0) { + strlcpy(req.ifr_name, ifname, sizeof req.ifr_name); + sa.sa.sa_family = AF_LINK; + sa.sa.sa_len = sizeof(ether_addr_t); + memcpy(sa.sa.sa_data, addr, sizeof(ether_addr_t)); + req.ifr_ifru.ifru_addr = sa.sa; + ioctl(s, SIOCSIFLLADDR, &req); + close(s); + } + break; + } +#else + if (p->ifa_name && !strcmp(p->ifa_name, ifname)) { + s = socket(AF_INET, SOCK_DGRAM, 0); + if (s == -1) + break; + strlcpy(req.ifr_name, ifname, sizeof req.ifr_name); + if (!ioctl(s, SIOCGIFHWADDR, &req)) { + a = e_malloc(sizeof(ether_addr_t)); + if (a) + memcpy(a, req.ifr_addr.sa_data, sizeof(ether_addr_t)); + + /* should set mac address */ + if (addr) { + memset(&req, 0, sizeof req); + strlcpy(req.ifr_name, ifname, sizeof req.ifr_name); + sa.sa.sa_family = ARPHRD_ETHER; + memcpy(sa.sa.sa_data, addr, sizeof(ether_addr_t)); + req.ifr_hwaddr = sa.sa; + ioctl(s, SIOCSIFHWADDR, &req); + } + } + close(s); + break; + } +#endif + } + freeifaddrs(ifa); + + return a; +} + +/* + * e_get1stiface() - Get first interface of host + * + * @szIface = interface string buffer + * @iflen = size of interface buffer + * return: -1 error or 0 ok + */ +int +e_get1stiface(char *szIface, int iflen) +{ + struct ifaddrs *ifa; + + if (!szIface || !iflen) + return -1; + + getifaddrs(&ifa); + strlcpy(szIface, ifa->ifa_name, iflen); + freeifaddrs(ifa); + return 0; +} + +#ifndef __linux__ +/* + * e_getifacebyname() - Get interface and make network structure + * + * @psIface = Interface, if =NULL first interface + * @addr = Network address structure + * return: NULL error or !=NULL network structure + */ +sockaddr_t * +e_getifacebyname(const char *psIface, sockaddr_t * __restrict addr) +{ + char szIface[64] = { [0 ... 63] = 0 }; + struct ifaddrs *p, *ifa = NULL; + + if (!addr) + return NULL; + + memset(addr, 0, sizeof(sockaddr_t)); + getifaddrs(&ifa); + strlcpy(szIface, psIface ? psIface : ifa->ifa_name, sizeof szIface); + for (p = ifa; p && p->ifa_name; p = p->ifa_next) + if (p->ifa_name && !strcmp(p->ifa_name, szIface) && p->ifa_addr && + p->ifa_addr->sa_family == AF_LINK) { + memcpy(&addr->sdl, p->ifa_addr, sizeof(struct sockaddr_dl)); + break; + } + freeifaddrs(ifa); + + return addr; +} + +/* + * e_getlinkbyname() - Get host ethernet address and make network structure + * + * @psHost = Host ethernet address + * @addr = Network address structure + * return: NULL error or !=NULL network structure + */ +sockaddr_t * +e_getlinkbyname(const char *psHost, sockaddr_t * __restrict addr) +{ + ait_val_t v; + sockaddr_t *a = addr; + + if (!psHost || !addr) + return NULL; + else + memset(addr, 0, sizeof(sockaddr_t)); + + AIT_INIT_VAL2(&v, string); + if (!strchr(psHost, '.')) + AIT_SET_STR(&v, ":"); + AIT_SET_STRCAT(&v, psHost); + + addr->sdl.sdl_len = sizeof(struct sockaddr_dl); + if (e_link_addr(AIT_GET_STR(&v), &addr->sdl)) + a = NULL; + + AIT_FREE_VAL(&v); + return a; +} + +/* + * e_getlinkbyether() - Get ethernet address and make network structure + * + * @mac = Ethernet address + * @idx = Interface index + * @type = Interface type + * @iface = Interface name + * @addr = Network address structure + * return: NULL error or !=NULL network structure + */ +sockaddr_t * +e_getlinkbyether(const ether_addr_t * __restrict mac, u_short idx, u_char type, + const char *iface, sockaddr_t * __restrict addr) +{ + sockaddr_t *a = addr; + + if (!addr) + return NULL; + else + memset(addr, 0, sizeof(sockaddr_t)); + + addr->sdl.sdl_len = sizeof(struct sockaddr_dl); + addr->sdl.sdl_family = AF_LINK; + addr->sdl.sdl_index = idx; + addr->sdl.sdl_type = type; + if (iface && *iface) { + addr->sdl.sdl_nlen = strlen(iface); + memcpy(addr->sdl.sdl_data, iface, addr->sdl.sdl_nlen); + } + addr->sdl.sdl_alen = sizeof(ether_addr_t); + memcpy(LLADDR(&addr->sdl), mac, addr->sdl.sdl_alen); + + return a; +} +#endif