X-Git-Url: https://tinc-vpn.org/git/browse?a=blobdiff_plain;ds=sidebyside;f=src%2Fnetutl.c;h=35a3fef6f25cb6f09353adfc83e64dc0fe24caeb;hb=5fc1ed17f41f0c535cf57a4b7e00cd6d45759503;hp=ea4839f077b984fc4ddc474dfb41bef32933aee2;hpb=e8e69460a7090aaf6ecda8970d3060695de81b00;p=tinc diff --git a/src/netutl.c b/src/netutl.c index ea4839f0..35a3fef6 100644 --- a/src/netutl.c +++ b/src/netutl.c @@ -1,7 +1,7 @@ /* netutl.c -- some supporting network utility code - Copyright (C) 1998-2002 Ivo Timmermans - 2000-2002 Guus Sliepen + Copyright (C) 1998-2002 Ivo Timmermans + 2000-2002 Guus Sliepen This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -17,7 +17,7 @@ along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - $Id: netutl.c,v 1.12.4.25 2002/02/20 17:15:33 guus Exp $ + $Id: netutl.c,v 1.12.4.42 2002/09/09 19:39:59 guus Exp $ */ #include "config.h" @@ -27,6 +27,9 @@ #include #include #include +#ifdef HAVE_INTTYPES_H + #include +#endif #include #include #include @@ -53,13 +56,15 @@ struct addrinfo *str2addrinfo(char *address, char *service, int socktype) { struct addrinfo hint, *ai; int err; -cp + cp(); memset(&hint, 0, sizeof(hint)); hint.ai_family = addressfamily; hint.ai_socktype = socktype; - if((err = getaddrinfo(address, service, &hint, &ai))) + err = getaddrinfo(address, service, &hint, &ai); + + if(err) { if(debug_lvl >= DEBUG_ERROR) syslog(LOG_WARNING, _("Error looking up %s port %s: %s\n"), address, service, gai_strerror(err)); @@ -67,7 +72,7 @@ cp return NULL; } -cp + cp(); return ai; } @@ -76,14 +81,16 @@ sockaddr_t str2sockaddr(char *address, char *port) struct addrinfo hint, *ai; sockaddr_t result; int err; -cp + cp(); memset(&hint, 0, sizeof(hint)); hint.ai_family = AF_UNSPEC; hint.ai_flags = AI_NUMERICHOST; hint.ai_socktype = SOCK_STREAM; - if((err = getaddrinfo(address, port, &hint, &ai) || !ai)) + err = getaddrinfo(address, port, &hint, &ai); + + if(err || !ai) { syslog(LOG_ERR, _("Error looking up %s port %s: %s\n"), address, port, gai_strerror(err)); cp_trace(); @@ -93,7 +100,7 @@ cp result = *(sockaddr_t *)ai->ai_addr; freeaddrinfo(ai); -cp + cp(); return result; } @@ -101,9 +108,12 @@ void sockaddr2str(sockaddr_t *sa, char **addrstr, char **portstr) { char address[NI_MAXHOST]; char port[NI_MAXSERV]; + char *scopeid; int err; -cp - if((err = getnameinfo((struct sockaddr *)sa, sizeof(sockaddr_t), address, sizeof(address), port, sizeof(port), NI_NUMERICHOST|NI_NUMERICSERV))) + cp(); + err = getnameinfo(&sa->sa, SALEN(sa->sa), address, sizeof(address), port, sizeof(port), NI_NUMERICHOST|NI_NUMERICSERV); + + if(err) { syslog(LOG_ERR, _("Error while translating addresses: %s"), gai_strerror(err)); cp_trace(); @@ -111,9 +121,14 @@ cp exit(0); } + scopeid = strchr(address, '%'); + + if(scopeid) + *scopeid = '\0'; /* Descope. */ + *addrstr = xstrdup(address); *portstr = xstrdup(port); -cp + cp(); } char *sockaddr2hostname(sockaddr_t *sa) @@ -122,21 +137,22 @@ char *sockaddr2hostname(sockaddr_t *sa) char address[NI_MAXHOST] = "unknown"; char port[NI_MAXSERV] = "unknown"; int err; -cp - if((err = getnameinfo((struct sockaddr *)sa, sizeof(sockaddr_t), address, sizeof(address), port, sizeof(port), hostnames?0:(NI_NUMERICHOST|NI_NUMERICSERV)))) + cp(); + err = getnameinfo(&sa->sa, SALEN(sa->sa), address, sizeof(address), port, sizeof(port), hostnames?0:(NI_NUMERICHOST|NI_NUMERICSERV)); + if(err) { syslog(LOG_ERR, _("Error while looking up hostname: %s"), gai_strerror(err)); } asprintf(&str, _("%s port %s"), address, port); -cp + cp(); return str; } int sockaddrcmp(sockaddr_t *a, sockaddr_t *b) { int result; -cp + cp(); result = a->sa.sa_family - b->sa.sa_family; if(result) @@ -147,58 +163,81 @@ cp case AF_UNSPEC: return 0; case AF_INET: - return memcmp(&a->in, &b->in, sizeof(a->in)); + result = memcmp(&a->in.sin_addr, &b->in.sin_addr, sizeof(a->in.sin_addr)); + if(result) + return result; + return memcmp(&a->in.sin_port, &b->in.sin_port, sizeof(a->in.sin_port)); case AF_INET6: - return memcmp(&a->in6, &b->in6, sizeof(a->in6)); + result = memcmp(&a->in6.sin6_addr, &b->in6.sin6_addr, sizeof(a->in6.sin6_addr)); + if(result) + return result; + return memcmp(&a->in6.sin6_port, &b->in6.sin6_port, sizeof(a->in6.sin6_port)); default: syslog(LOG_ERR, _("sockaddrcmp() was called with unknown address family %d, exitting!"), a->sa.sa_family); cp_trace(); raise(SIGFPE); exit(0); } -cp + cp(); +} + +void sockaddrunmap(sockaddr_t *sa) +{ + if(sa->sa.sa_family == AF_INET6 && IN6_IS_ADDR_V4MAPPED(&sa->in6.sin6_addr)) + { + sa->in.sin_addr.s_addr = ((uint32_t *)&sa->in6.sin6_addr)[3]; + sa->in.sin_family = AF_INET; + } } /* Subnet mask handling */ -int maskcmp(char *a, char *b, int masklen, int len) +int maskcmp(void *va, void *vb, int masklen, int len) { int i, m, result; -cp + char *a = va; + char *b = vb; + cp(); for(m = masklen, i = 0; m >= 8; m -= 8, i++) - if((result = a[i] - b[i])) - return result; - + { + result = a[i] - b[i]; + if(result) + return result; + } + if(m) - return (a[i] & (0x100 - (m << 1))) - (b[i] & (0x100 - (m << 1))); + return (a[i] & (0x100 - (1 << (8 - m)))) - (b[i] & (0x100 - (1 << (8 - m)))); return 0; } -void mask(char *a, int masklen, int len) +void mask(void *va, int masklen, int len) { int i; -cp + char *a = va; + cp(); i = masklen / 8; masklen %= 8; if(masklen) - a[i++] &= (0x100 - (masklen << 1)); + a[i++] &= (0x100 - (1 << masklen)); for(; i < len; i++) a[i] = 0; } -void maskcpy(char *a, char *b, int masklen, int len) +void maskcpy(void *va, void *vb, int masklen, int len) { int i, m; -cp + char *a = va; + char *b = vb; + cp(); for(m = masklen, i = 0; m >= 8; m -= 8, i++) a[i] = b[i]; if(m) { - a[i] = b[i] & (0x100 - (m << 1)); + a[i] = b[i] & (0x100 - (1 << m)); i++; } @@ -206,20 +245,20 @@ cp a[i] = 0; } -int maskcheck(char *a, int masklen, int len) +int maskcheck(void *va, int masklen, int len) { int i; -cp + char *a = va; + cp(); i = masklen / 8; masklen %= 8; - - if(masklen) - if(a[i++] & ~(0x100 - (masklen << 1))) - return -1; - + + if(masklen && a[i++] & (0xff >> masklen)) + return -1; + for(; i < len; i++) if(a[i] != 0) - return -1; + return -2; return 0; }