X-Git-Url: https://tinc-vpn.org/git/browse?p=tinc;a=blobdiff_plain;f=src%2Fnetutl.c;h=2eebb6445ec5266ccaf36847a44d9dfab027f991;hp=2d8de9e8c1836c500160b6de084a776506063b0f;hb=d4410d0cce40929db9a0ce7042ef962f1867234d;hpb=d6c50eb73ad49bd2eac67214995dff76b7a20661 diff --git a/src/netutl.c b/src/netutl.c index 2d8de9e8..2eebb644 100644 --- a/src/netutl.c +++ b/src/netutl.c @@ -1,7 +1,7 @@ /* netutl.c -- some supporting network utility code Copyright (C) 1998-2005 Ivo Timmermans - 2000-2009 Guus Sliepen + 2000-2013 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 @@ -39,11 +39,13 @@ struct addrinfo *str2addrinfo(const char *address, const char *service, int sock hint.ai_family = addressfamily; hint.ai_socktype = socktype; +#if HAVE_DECL_RES_INIT + res_init(); +#endif err = getaddrinfo(address, service, &hint, &ai); if(err) { - logger(LOG_WARNING, "Error looking up %s port %s: %s", address, - service, gai_strerror(err)); + logger(DEBUG_ALWAYS, LOG_WARNING, "Error looking up %s port %s: %s", address, service, err == EAI_SYSTEM ? strerror(errno) : gai_strerror(err)); return NULL; } @@ -52,7 +54,7 @@ struct addrinfo *str2addrinfo(const char *address, const char *service, int sock sockaddr_t str2sockaddr(const char *address, const char *port) { struct addrinfo *ai, hint = {0}; - sockaddr_t result; + sockaddr_t result = {{0}}; int err; hint.ai_family = AF_UNSPEC; @@ -62,8 +64,7 @@ sockaddr_t str2sockaddr(const char *address, const char *port) { err = getaddrinfo(address, port, &hint, &ai); if(err || !ai) { - ifdebug(SCARY_THINGS) - logger(LOG_DEBUG, "Unknown type address %s port %s", address, port); + logger(DEBUG_SCARY_THINGS, LOG_DEBUG, "Unknown type address %s port %s", address, port); result.sa.sa_family = AF_UNKNOWN; result.unknown.address = xstrdup(address); result.unknown.port = xstrdup(port); @@ -82,28 +83,36 @@ void sockaddr2str(const sockaddr_t *sa, char **addrstr, char **portstr) { char *scopeid; int err; - if(sa->sa.sa_family == AF_UNKNOWN) { - *addrstr = xstrdup(sa->unknown.address); - *portstr = xstrdup(sa->unknown.port); + if(sa->sa.sa_family == AF_UNSPEC) { + if(addrstr) + *addrstr = xstrdup("unspec"); + if(portstr) + *portstr = xstrdup("unspec"); + return; + } else if(sa->sa.sa_family == AF_UNKNOWN) { + if(addrstr) + *addrstr = xstrdup(sa->unknown.address); + if(portstr) + *portstr = xstrdup(sa->unknown.port); return; } 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)); - raise(SIGFPE); - exit(0); + logger(DEBUG_ALWAYS, LOG_ERR, "Error while translating addresses: %s", err == EAI_SYSTEM ? strerror(errno) : gai_strerror(err)); + abort(); } scopeid = strchr(address, '%'); if(scopeid) - *scopeid = '\0'; /* Descope. */ + *scopeid = '\0'; /* Descope. */ - *addrstr = xstrdup(address); - *portstr = xstrdup(port); + if(addrstr) + *addrstr = xstrdup(address); + if(portstr) + *portstr = xstrdup(port); } char *sockaddr2hostname(const sockaddr_t *sa) { @@ -112,7 +121,10 @@ char *sockaddr2hostname(const sockaddr_t *sa) { char port[NI_MAXSERV] = "unknown"; int err; - if(sa->sa.sa_family == AF_UNKNOWN) { + if(sa->sa.sa_family == AF_UNSPEC) { + xasprintf(&str, "unspec port unspec"); + return str; + } else if(sa->sa.sa_family == AF_UNKNOWN) { xasprintf(&str, "%s port %s", sa->unknown.address, sa->unknown.port); return str; } @@ -120,8 +132,7 @@ char *sockaddr2hostname(const sockaddr_t *sa) { 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)); + logger(DEBUG_ALWAYS, LOG_ERR, "Error while looking up hostname: %s", err == EAI_SYSTEM ? strerror(errno) : gai_strerror(err)); } xasprintf(&str, "%s port %s", address, port); @@ -151,10 +162,9 @@ int sockaddrcmp_noport(const sockaddr_t *a, const sockaddr_t *b) { return memcmp(&a->in6.sin6_addr, &b->in6.sin6_addr, sizeof(a->in6.sin6_addr)); default: - logger(LOG_ERR, "sockaddrcmp() was called with unknown address family %d, exitting!", + logger(DEBUG_ALWAYS, LOG_ERR, "sockaddrcmp() was called with unknown address family %d, exitting!", a->sa.sa_family); - raise(SIGFPE); - exit(0); + abort(); } } @@ -195,10 +205,9 @@ int sockaddrcmp(const sockaddr_t *a, const sockaddr_t *b) { 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!", + logger(DEBUG_ALWAYS, LOG_ERR, "sockaddrcmp() was called with unknown address family %d, exitting!", a->sa.sa_family); - raise(SIGFPE); - exit(0); + abort(); } } @@ -218,78 +227,10 @@ void sockaddrfree(sockaddr_t *a) { free(a->unknown.port); } } - + 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(const void *va, const void *vb, int masklen) { - int i, m, result; - const char *a = va; - const char *b = vb; - - for(m = masklen, i = 0; m >= 8; m -= 8, i++) { - result = a[i] - b[i]; - if(result) - return result; - } - - if(m) - return (a[i] & (0x100 - (1 << (8 - m)))) - - (b[i] & (0x100 - (1 << (8 - m)))); - - return 0; -} - -void mask(void *va, int masklen, int len) { - int i; - char *a = va; - - i = masklen / 8; - masklen %= 8; - - if(masklen) - a[i++] &= (0x100 - (1 << (8 - masklen))); - - for(; i < len; i++) - a[i] = 0; -} - -void maskcpy(void *va, const void *vb, int masklen, int len) { - int i, m; - char *a = va; - const char *b = vb; - - for(m = masklen, i = 0; m >= 8; m -= 8, i++) - a[i] = b[i]; - - if(m) { - a[i] = b[i] & (0x100 - (1 << (8 - m))); - i++; - } - - for(; i < len; i++) - a[i] = 0; -} - -bool maskcheck(const void *va, int masklen, int len) { - int i; - const char *a = va; - - 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; -}