X-Git-Url: https://tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Fnetutl.c;h=0d34d8d64a73223c27353b93d4a9163b64612227;hp=ea4839f077b984fc4ddc474dfb41bef32933aee2;hb=eefa28059ab989c915a7d95fb4ae728abd7ce713;hpb=e8e69460a7090aaf6ecda8970d3060695de81b00 diff --git a/src/netutl.c b/src/netutl.c index ea4839f0..0d34d8d6 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) 1998-2003 Ivo Timmermans + 2000-2003 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 @@ -17,33 +17,18 @@ 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 1.12.4.48 2003/07/22 20:55:20 guus Exp $ */ -#include "config.h" - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include +#include "system.h" -#include "errno.h" -#include "conf.h" #include "net.h" #include "netutl.h" +#include "logger.h" +#include "utils.h" +#include "xalloc.h" -#include "system.h" - -int hostnames = 0; +bool hostnames = false; /* Turn a string into a struct addrinfo. @@ -51,175 +36,230 @@ int hostnames = 0; */ struct addrinfo *str2addrinfo(char *address, char *service, int socktype) { - struct addrinfo hint, *ai; - int err; -cp - memset(&hint, 0, sizeof(hint)); - - hint.ai_family = addressfamily; - hint.ai_socktype = socktype; - - if((err = getaddrinfo(address, service, &hint, &ai))) - { - if(debug_lvl >= DEBUG_ERROR) - syslog(LOG_WARNING, _("Error looking up %s port %s: %s\n"), address, service, gai_strerror(err)); - cp_trace(); - return NULL; - } - -cp - return ai; + struct addrinfo hint, *ai; + int err; + + cp(); + + memset(&hint, 0, sizeof(hint)); + + hint.ai_family = addressfamily; + hint.ai_socktype = socktype; + + err = getaddrinfo(address, service, &hint, &ai); + + if(err) { + logger(LOG_WARNING, _("Error looking up %s port %s: %s\n"), address, + service, gai_strerror(err)); + return NULL; + } + + return ai; } sockaddr_t str2sockaddr(char *address, char *port) { - struct addrinfo hint, *ai; - sockaddr_t result; - int err; -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)) - { - syslog(LOG_ERR, _("Error looking up %s port %s: %s\n"), address, port, gai_strerror(err)); - cp_trace(); - raise(SIGFPE); - exit(0); - } - - result = *(sockaddr_t *)ai->ai_addr; - freeaddrinfo(ai); -cp - return result; + struct addrinfo hint, *ai; + sockaddr_t result; + int err; + + cp(); + + memset(&hint, 0, sizeof(hint)); + + hint.ai_family = AF_UNSPEC; + hint.ai_flags = AI_NUMERICHOST; + hint.ai_socktype = SOCK_STREAM; + + err = getaddrinfo(address, port, &hint, &ai); + + if(err || !ai) { + logger(LOG_ERR, _("Error looking up %s port %s: %s\n"), address, port, + gai_strerror(err)); + cp_trace(); + raise(SIGFPE); + exit(0); + } + + result = *(sockaddr_t *) ai->ai_addr; + freeaddrinfo(ai); + + return result; } void sockaddr2str(sockaddr_t *sa, char **addrstr, char **portstr) { - char address[NI_MAXHOST]; - char port[NI_MAXSERV]; - int err; -cp - if((err = getnameinfo((struct sockaddr *)sa, sizeof(sockaddr_t), address, sizeof(address), port, sizeof(port), NI_NUMERICHOST|NI_NUMERICSERV))) - { - syslog(LOG_ERR, _("Error while translating addresses: %s"), gai_strerror(err)); - cp_trace(); - raise(SIGFPE); - exit(0); - } - - *addrstr = xstrdup(address); - *portstr = xstrdup(port); -cp + char address[NI_MAXHOST]; + char port[NI_MAXSERV]; + char *scopeid; + int err; + + cp(); + + err = getnameinfo(&sa->sa, SALEN(sa->sa), address, sizeof(address), port, sizeof(port), NI_NUMERICHOST | NI_NUMERICSERV); + + if(err) { + logger(LOG_ERR, _("Error while translating addresses: %s"), + gai_strerror(err)); + cp_trace(); + raise(SIGFPE); + exit(0); + } + + scopeid = strchr(address, '%'); + + if(scopeid) + *scopeid = '\0'; /* Descope. */ + + *addrstr = xstrdup(address); + *portstr = xstrdup(port); } char *sockaddr2hostname(sockaddr_t *sa) { - char *str; - 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)))) - { - syslog(LOG_ERR, _("Error while looking up hostname: %s"), gai_strerror(err)); - } - - asprintf(&str, _("%s port %s"), address, port); -cp - return str; + char *str; + char address[NI_MAXHOST] = "unknown"; + char port[NI_MAXSERV] = "unknown"; + int err; + + cp(); + + err = getnameinfo(&sa->sa, SALEN(sa->sa), address, sizeof(address), port, sizeof(port), + hostnames ? 0 : (NI_NUMERICHOST | NI_NUMERICSERV)); + if(err) { + logger(LOG_ERR, _("Error while looking up hostname: %s"), + gai_strerror(err)); + } + + asprintf(&str, _("%s port %s"), address, port); + + return str; } int sockaddrcmp(sockaddr_t *a, sockaddr_t *b) { - int result; -cp - result = a->sa.sa_family - b->sa.sa_family; - - if(result) - return result; - - switch(a->sa.sa_family) - { - case AF_UNSPEC: - return 0; - case AF_INET: - return memcmp(&a->in, &b->in, sizeof(a->in)); - case AF_INET6: - return memcmp(&a->in6, &b->in6, sizeof(a->in6)); - default: - syslog(LOG_ERR, _("sockaddrcmp() was called with unknown address family %d, exitting!"), a->sa.sa_family); - cp_trace(); - raise(SIGFPE); - exit(0); - } -cp + int result; + + cp(); + + result = a->sa.sa_family - b->sa.sa_family; + + if(result) + return result; + + switch (a->sa.sa_family) { + case AF_UNSPEC: + return 0; + + case AF_INET: + 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: + 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: + logger(LOG_ERR, _("sockaddrcmp() was called with unknown address family %d, exitting!"), + a->sa.sa_family); + cp_trace(); + raise(SIGFPE); + exit(0); + } +} + +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 - for(m = masklen, i = 0; m >= 8; m -= 8, i++) - if((result = a[i] - b[i])) - return result; + int i, m, result; + char *a = va; + char *b = vb; + + cp(); - if(m) - return (a[i] & (0x100 - (m << 1))) - (b[i] & (0x100 - (m << 1))); + for(m = masklen, i = 0; m >= 8; m -= 8, i++) { + result = a[i] - b[i]; + if(result) + return result; + } - return 0; + if(m) + 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 - i = masklen / 8; - masklen %= 8; - - if(masklen) - a[i++] &= (0x100 - (masklen << 1)); - - for(; i < len; i++) - a[i] = 0; + int i; + char *a = va; + + cp(); + + i = masklen / 8; + masklen %= 8; + + if(masklen) + 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 - for(m = masklen, i = 0; m >= 8; m -= 8, i++) - a[i] = b[i]; - - if(m) - { - a[i] = b[i] & (0x100 - (m << 1)); - i++; - } - - for(; i < len; i++) - a[i] = 0; + int i, m; + 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 - (1 << m)); + i++; + } + + for(; i < len; i++) + a[i] = 0; } -int maskcheck(char *a, int masklen, int len) +bool maskcheck(void *va, int masklen, int len) { - int i; -cp - i = masklen / 8; - masklen %= 8; - - if(masklen) - if(a[i++] & ~(0x100 - (masklen << 1))) - return -1; - - for(; i < len; i++) - if(a[i] != 0) - return -1; - - return 0; + int i; + char *a = va; + + cp(); + + i = masklen / 8; + masklen %= 8; + + if(masklen && a[i++] & (0xff >> masklen)) + return false; + + for(; i < len; i++) + if(a[i] != 0) + return false; + + return true; }