| /* Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "apr_arch_networkio.h" |
| #include "apr_strings.h" |
| #include "apr.h" |
| #include "apr_lib.h" |
| #include "apr_strings.h" |
| #include "apr_private.h" |
| |
| #if APR_HAVE_STDLIB_H |
| #include <stdlib.h> |
| #endif |
| |
| #define APR_WANT_STRFUNC |
| #include "apr_want.h" |
| |
| struct apr_ipsubnet_t { |
| int family; |
| #if APR_HAVE_IPV6 |
| apr_uint32_t sub[4]; /* big enough for IPv4 and IPv6 addresses */ |
| apr_uint32_t mask[4]; |
| #else |
| apr_uint32_t sub[1]; |
| apr_uint32_t mask[1]; |
| #endif |
| }; |
| |
| #if !defined(NETWARE) && !defined(WIN32) |
| #ifdef HAVE_SET_H_ERRNO |
| #define SET_H_ERRNO(newval) set_h_errno(newval) |
| #else |
| #define SET_H_ERRNO(newval) h_errno = (newval) |
| #endif |
| #else |
| #define SET_H_ERRNO(newval) |
| #endif |
| |
| #if APR_HAS_THREADS && !defined(GETHOSTBYNAME_IS_THREAD_SAFE) && \ |
| defined(HAVE_GETHOSTBYNAME_R) |
| /* This is the maximum size that may be returned from the reentrant |
| * gethostbyname_r function. If the system tries to use more, it |
| * should return ERANGE. |
| */ |
| #define GETHOSTBYNAME_BUFLEN 512 |
| #endif |
| |
| #ifdef _WIN32_WCE |
| /* XXX: BS solution. Need an HAVE_GETSERVBYNAME and actually |
| * do something here, to provide the obvious proto mappings. |
| */ |
| static void *getservbyname(const char *name, const char *proto) |
| { |
| return NULL; |
| } |
| #endif |
| |
| static apr_status_t get_local_addr(apr_socket_t *sock) |
| { |
| sock->local_addr->salen = sizeof(sock->local_addr->sa); |
| if (getsockname(sock->socketdes, (struct sockaddr *)&sock->local_addr->sa, |
| &sock->local_addr->salen) < 0) { |
| return apr_get_netos_error(); |
| } |
| else { |
| sock->local_port_unknown = sock->local_interface_unknown = 0; |
| /* XXX assumes sin_port and sin6_port at same offset */ |
| sock->local_addr->port = ntohs(sock->local_addr->sa.sin.sin_port); |
| return APR_SUCCESS; |
| } |
| } |
| |
| static apr_status_t get_remote_addr(apr_socket_t *sock) |
| { |
| sock->remote_addr->salen = sizeof(sock->remote_addr->sa); |
| if (getpeername(sock->socketdes, (struct sockaddr *)&sock->remote_addr->sa, |
| &sock->remote_addr->salen) < 0) { |
| return apr_get_netos_error(); |
| } |
| else { |
| sock->remote_addr_unknown = 0; |
| /* XXX assumes sin_port and sin6_port at same offset */ |
| sock->remote_addr->port = ntohs(sock->remote_addr->sa.sin.sin_port); |
| return APR_SUCCESS; |
| } |
| } |
| |
| APR_DECLARE(apr_status_t) apr_sockaddr_ip_get(char **addr, |
| apr_sockaddr_t *sockaddr) |
| { |
| *addr = apr_palloc(sockaddr->pool, sockaddr->addr_str_len); |
| apr_inet_ntop(sockaddr->family, |
| sockaddr->ipaddr_ptr, |
| *addr, |
| sockaddr->addr_str_len); |
| #if APR_HAVE_IPV6 |
| if (sockaddr->family == AF_INET6 && |
| IN6_IS_ADDR_V4MAPPED((struct in6_addr *)sockaddr->ipaddr_ptr)) { |
| /* This is an IPv4-mapped IPv6 address; drop the leading |
| * part of the address string so we're left with the familiar |
| * IPv4 format. |
| */ |
| *addr += strlen("::ffff:"); |
| } |
| #endif |
| return APR_SUCCESS; |
| } |
| |
| void apr_sockaddr_vars_set(apr_sockaddr_t *addr, int family, apr_port_t port) |
| { |
| addr->family = family; |
| addr->sa.sin.sin_family = family; |
| if (port) { |
| /* XXX IPv6: assumes sin_port and sin6_port at same offset */ |
| addr->sa.sin.sin_port = htons(port); |
| addr->port = port; |
| } |
| |
| if (family == APR_INET) { |
| addr->salen = sizeof(struct sockaddr_in); |
| addr->addr_str_len = 16; |
| addr->ipaddr_ptr = &(addr->sa.sin.sin_addr); |
| addr->ipaddr_len = sizeof(struct in_addr); |
| } |
| #if APR_HAVE_IPV6 |
| else if (family == APR_INET6) { |
| addr->salen = sizeof(struct sockaddr_in6); |
| addr->addr_str_len = 46; |
| addr->ipaddr_ptr = &(addr->sa.sin6.sin6_addr); |
| addr->ipaddr_len = sizeof(struct in6_addr); |
| } |
| #endif |
| } |
| |
| APR_DECLARE(apr_status_t) apr_socket_addr_get(apr_sockaddr_t **sa, |
| apr_interface_e which, |
| apr_socket_t *sock) |
| { |
| if (which == APR_LOCAL) { |
| if (sock->local_interface_unknown || sock->local_port_unknown) { |
| apr_status_t rv = get_local_addr(sock); |
| |
| if (rv != APR_SUCCESS) { |
| return rv; |
| } |
| } |
| *sa = sock->local_addr; |
| } |
| else if (which == APR_REMOTE) { |
| if (sock->remote_addr_unknown) { |
| apr_status_t rv = get_remote_addr(sock); |
| |
| if (rv != APR_SUCCESS) { |
| return rv; |
| } |
| } |
| *sa = sock->remote_addr; |
| } |
| else { |
| *sa = NULL; |
| return APR_EINVAL; |
| } |
| return APR_SUCCESS; |
| } |
| |
| APR_DECLARE(apr_status_t) apr_parse_addr_port(char **addr, |
| char **scope_id, |
| apr_port_t *port, |
| const char *str, |
| apr_pool_t *p) |
| { |
| const char *ch, *lastchar; |
| int big_port; |
| apr_size_t addrlen; |
| |
| *addr = NULL; /* assume not specified */ |
| *scope_id = NULL; /* assume not specified */ |
| *port = 0; /* assume not specified */ |
| |
| /* First handle the optional port number. That may be all that |
| * is specified in the string. |
| */ |
| ch = lastchar = str + strlen(str) - 1; |
| while (ch >= str && apr_isdigit(*ch)) { |
| --ch; |
| } |
| |
| if (ch < str) { /* Entire string is the port. */ |
| big_port = atoi(str); |
| if (big_port < 1 || big_port > 65535) { |
| return APR_EINVAL; |
| } |
| *port = big_port; |
| return APR_SUCCESS; |
| } |
| |
| if (*ch == ':' && ch < lastchar) { /* host and port number specified */ |
| if (ch == str) { /* string starts with ':' -- bad */ |
| return APR_EINVAL; |
| } |
| big_port = atoi(ch + 1); |
| if (big_port < 1 || big_port > 65535) { |
| return APR_EINVAL; |
| } |
| *port = big_port; |
| lastchar = ch - 1; |
| } |
| |
| /* now handle the hostname */ |
| addrlen = lastchar - str + 1; |
| |
| /* XXX we don't really have to require APR_HAVE_IPV6 for this; |
| * just pass char[] for ipaddr (so we don't depend on struct in6_addr) |
| * and always define APR_INET6 |
| */ |
| #if APR_HAVE_IPV6 |
| if (*str == '[') { |
| const char *end_bracket = memchr(str, ']', addrlen); |
| struct in6_addr ipaddr; |
| const char *scope_delim; |
| |
| if (!end_bracket || end_bracket != lastchar) { |
| *port = 0; |
| return APR_EINVAL; |
| } |
| |
| /* handle scope id; this is the only context where it is allowed */ |
| scope_delim = memchr(str, '%', addrlen); |
| if (scope_delim) { |
| if (scope_delim == end_bracket - 1) { /* '%' without scope id */ |
| *port = 0; |
| return APR_EINVAL; |
| } |
| addrlen = scope_delim - str - 1; |
| *scope_id = apr_palloc(p, end_bracket - scope_delim); |
| memcpy(*scope_id, scope_delim + 1, end_bracket - scope_delim - 1); |
| (*scope_id)[end_bracket - scope_delim - 1] = '\0'; |
| } |
| else { |
| addrlen = addrlen - 2; /* minus 2 for '[' and ']' */ |
| } |
| |
| *addr = apr_palloc(p, addrlen + 1); |
| memcpy(*addr, |
| str + 1, |
| addrlen); |
| (*addr)[addrlen] = '\0'; |
| if (apr_inet_pton(AF_INET6, *addr, &ipaddr) != 1) { |
| *addr = NULL; |
| *scope_id = NULL; |
| *port = 0; |
| return APR_EINVAL; |
| } |
| } |
| else |
| #endif |
| { |
| /* XXX If '%' is not a valid char in a DNS name, we *could* check |
| * for bogus scope ids first. |
| */ |
| *addr = apr_palloc(p, addrlen + 1); |
| memcpy(*addr, str, addrlen); |
| (*addr)[addrlen] = '\0'; |
| } |
| return APR_SUCCESS; |
| } |
| |
| #if defined(HAVE_GETADDRINFO) |
| |
| static apr_status_t call_resolver(apr_sockaddr_t **sa, |
| const char *hostname, apr_int32_t family, |
| apr_port_t port, apr_int32_t flags, |
| apr_pool_t *p) |
| { |
| struct addrinfo hints, *ai, *ai_list; |
| apr_sockaddr_t *prev_sa; |
| int error; |
| char *servname = NULL; |
| |
| memset(&hints, 0, sizeof(hints)); |
| hints.ai_family = family; |
| hints.ai_socktype = SOCK_STREAM; |
| #ifdef HAVE_GAI_ADDRCONFIG |
| if (family == APR_UNSPEC) { |
| /* By default, only look up addresses using address types for |
| * which a local interface is configured, i.e. no IPv6 if no |
| * IPv6 interfaces configured. */ |
| hints.ai_flags = AI_ADDRCONFIG; |
| } |
| #endif |
| if(hostname == NULL) { |
| #ifdef AI_PASSIVE |
| /* If hostname is NULL, assume we are trying to bind to all |
| * interfaces. */ |
| hints.ai_flags |= AI_PASSIVE; |
| #endif |
| /* getaddrinfo according to RFC 2553 must have either hostname |
| * or servname non-NULL. |
| */ |
| #ifdef OSF1 |
| /* The Tru64 5.0 getaddrinfo() can only resolve services given |
| * by the name listed in /etc/services; a numeric or unknown |
| * servname gets an EAI_SERVICE error. So just resolve the |
| * appropriate anyaddr and fill in the port later. */ |
| hostname = family == AF_INET6 ? "::" : "0.0.0.0"; |
| servname = NULL; |
| #ifdef AI_NUMERICHOST |
| hints.ai_flags |= AI_NUMERICHOST; |
| #endif |
| #else |
| #ifdef _AIX |
| /* But current AIX getaddrinfo() doesn't like servname = "0"; |
| * the "1" won't hurt since we use the port parameter to fill |
| * in the returned socket addresses later |
| */ |
| if (!port) { |
| servname = "1"; |
| } |
| else |
| #endif /* _AIX */ |
| servname = apr_itoa(p, port); |
| #endif /* OSF1 */ |
| } |
| error = getaddrinfo(hostname, servname, &hints, &ai_list); |
| #ifdef HAVE_GAI_ADDRCONFIG |
| if (error == EAI_BADFLAGS && family == APR_UNSPEC) { |
| /* Retry with no flags if AI_ADDRCONFIG was rejected. */ |
| hints.ai_flags = 0; |
| error = getaddrinfo(hostname, servname, &hints, &ai_list); |
| } |
| #endif |
| if (error) { |
| #ifndef WIN32 |
| if (error == EAI_SYSTEM) { |
| return errno; |
| } |
| else |
| #endif |
| { |
| /* issues with representing this with APR's error scheme: |
| * glibc uses negative values for these numbers, perhaps so |
| * they don't conflict with h_errno values... Tru64 uses |
| * positive values which conflict with h_errno values |
| */ |
| #if defined(NEGATIVE_EAI) |
| error = -error; |
| #endif |
| return error + APR_OS_START_EAIERR; |
| } |
| } |
| |
| prev_sa = NULL; |
| ai = ai_list; |
| while (ai) { /* while more addresses to report */ |
| apr_sockaddr_t *new_sa; |
| |
| /* Ignore anything bogus: getaddrinfo in some old versions of |
| * glibc will return AF_UNIX entries for APR_UNSPEC+AI_PASSIVE |
| * lookups. */ |
| if (ai->ai_family != AF_INET && ai->ai_family != AF_INET6) { |
| ai = ai->ai_next; |
| continue; |
| } |
| |
| new_sa = apr_pcalloc(p, sizeof(apr_sockaddr_t)); |
| |
| new_sa->pool = p; |
| memcpy(&new_sa->sa, ai->ai_addr, ai->ai_addrlen); |
| apr_sockaddr_vars_set(new_sa, ai->ai_family, port); |
| |
| if (!prev_sa) { /* first element in new list */ |
| if (hostname) { |
| new_sa->hostname = apr_pstrdup(p, hostname); |
| } |
| *sa = new_sa; |
| } |
| else { |
| new_sa->hostname = prev_sa->hostname; |
| prev_sa->next = new_sa; |
| } |
| |
| prev_sa = new_sa; |
| ai = ai->ai_next; |
| } |
| freeaddrinfo(ai_list); |
| return APR_SUCCESS; |
| } |
| |
| static apr_status_t find_addresses(apr_sockaddr_t **sa, |
| const char *hostname, apr_int32_t family, |
| apr_port_t port, apr_int32_t flags, |
| apr_pool_t *p) |
| { |
| if (flags & APR_IPV4_ADDR_OK) { |
| apr_status_t error = call_resolver(sa, hostname, AF_INET, port, flags, p); |
| |
| #if APR_HAVE_IPV6 |
| if (error) { |
| family = AF_INET6; /* try again */ |
| } |
| else |
| #endif |
| return error; |
| } |
| #if APR_HAVE_IPV6 |
| else if (flags & APR_IPV6_ADDR_OK) { |
| apr_status_t error = call_resolver(sa, hostname, AF_INET6, port, flags, p); |
| |
| if (error) { |
| family = AF_INET; /* try again */ |
| } |
| else { |
| return APR_SUCCESS; |
| } |
| } |
| #endif |
| |
| return call_resolver(sa, hostname, family, port, flags, p); |
| } |
| |
| #else /* end of HAVE_GETADDRINFO code */ |
| |
| static apr_status_t find_addresses(apr_sockaddr_t **sa, |
| const char *hostname, apr_int32_t family, |
| apr_port_t port, apr_int32_t flags, |
| apr_pool_t *p) |
| { |
| struct hostent *hp; |
| apr_sockaddr_t *prev_sa; |
| int curaddr; |
| #if APR_HAS_THREADS && !defined(GETHOSTBYNAME_IS_THREAD_SAFE) && \ |
| defined(HAVE_GETHOSTBYNAME_R) && !defined(BEOS) |
| #ifdef GETHOSTBYNAME_R_HOSTENT_DATA |
| struct hostent_data hd; |
| #else |
| /* If you see ERANGE, that means GETHOSBYNAME_BUFLEN needs to be |
| * bumped. */ |
| char tmp[GETHOSTBYNAME_BUFLEN]; |
| #endif |
| int hosterror; |
| #endif |
| struct hostent hs; |
| struct in_addr ipaddr; |
| char *addr_list[2]; |
| const char *orig_hostname = hostname; |
| |
| if (hostname == NULL) { |
| /* if we are given a NULL hostname, assume '0.0.0.0' */ |
| hostname = "0.0.0.0"; |
| } |
| |
| if (*hostname >= '0' && *hostname <= '9' && |
| strspn(hostname, "0123456789.") == strlen(hostname)) { |
| |
| ipaddr.s_addr = inet_addr(hostname); |
| addr_list[0] = (char *)&ipaddr; |
| addr_list[1] = NULL; /* just one IP in list */ |
| hs.h_addr_list = (char **)addr_list; |
| hp = &hs; |
| } |
| else { |
| #if APR_HAS_THREADS && !defined(GETHOSTBYNAME_IS_THREAD_SAFE) && \ |
| defined(HAVE_GETHOSTBYNAME_R) && !defined(BEOS) |
| #if defined(GETHOSTBYNAME_R_HOSTENT_DATA) |
| /* AIX, HP/UX, D/UX et alia */ |
| gethostbyname_r(hostname, &hs, &hd); |
| hp = &hs; |
| #else |
| #if defined(GETHOSTBYNAME_R_GLIBC2) |
| /* Linux glibc2+ */ |
| gethostbyname_r(hostname, &hs, tmp, GETHOSTBYNAME_BUFLEN - 1, |
| &hp, &hosterror); |
| #else |
| /* Solaris, Irix et alia */ |
| hp = gethostbyname_r(hostname, &hs, tmp, GETHOSTBYNAME_BUFLEN - 1, |
| &hosterror); |
| #endif /* !defined(GETHOSTBYNAME_R_GLIBC2) */ |
| if (!hp) { |
| return (hosterror + APR_OS_START_SYSERR); |
| } |
| #endif /* !defined(GETHOSTBYNAME_R_HOSTENT_DATA) */ |
| #else |
| hp = gethostbyname(hostname); |
| #endif |
| |
| if (!hp) { |
| #ifdef WIN32 |
| return apr_get_netos_error(); |
| #else |
| return (h_errno + APR_OS_START_SYSERR); |
| #endif |
| } |
| } |
| |
| prev_sa = NULL; |
| curaddr = 0; |
| while (hp->h_addr_list[curaddr]) { |
| apr_sockaddr_t *new_sa = apr_pcalloc(p, sizeof(apr_sockaddr_t)); |
| |
| new_sa->pool = p; |
| new_sa->sa.sin.sin_addr = *(struct in_addr *)hp->h_addr_list[curaddr]; |
| apr_sockaddr_vars_set(new_sa, AF_INET, port); |
| |
| if (!prev_sa) { /* first element in new list */ |
| if (orig_hostname) { |
| new_sa->hostname = apr_pstrdup(p, orig_hostname); |
| } |
| *sa = new_sa; |
| } |
| else { |
| new_sa->hostname = prev_sa->hostname; |
| prev_sa->next = new_sa; |
| } |
| |
| prev_sa = new_sa; |
| ++curaddr; |
| } |
| |
| return APR_SUCCESS; |
| } |
| |
| #endif /* end of !HAVE_GETADDRINFO code */ |
| |
| APR_DECLARE(apr_status_t) apr_sockaddr_info_get(apr_sockaddr_t **sa, |
| const char *hostname, |
| apr_int32_t family, apr_port_t port, |
| apr_int32_t flags, apr_pool_t *p) |
| { |
| apr_int32_t masked; |
| *sa = NULL; |
| |
| if ((masked = flags & (APR_IPV4_ADDR_OK | APR_IPV6_ADDR_OK))) { |
| if (!hostname || |
| family != APR_UNSPEC || |
| masked == (APR_IPV4_ADDR_OK | APR_IPV6_ADDR_OK)) { |
| return APR_EINVAL; |
| } |
| #if !APR_HAVE_IPV6 |
| if (flags & APR_IPV6_ADDR_OK) { |
| return APR_ENOTIMPL; |
| } |
| #endif |
| } |
| #if !APR_HAVE_IPV6 |
| /* What may happen is that APR is not IPv6-enabled, but we're still |
| * going to call getaddrinfo(), so we have to tell the OS we only |
| * want IPv4 addresses back since we won't know what to do with |
| * IPv6 addresses. |
| */ |
| if (family == APR_UNSPEC) { |
| family = APR_INET; |
| } |
| #endif |
| |
| return find_addresses(sa, hostname, family, port, flags, p); |
| } |
| |
| APR_DECLARE(apr_status_t) apr_getnameinfo(char **hostname, |
| apr_sockaddr_t *sockaddr, |
| apr_int32_t flags) |
| { |
| #if defined(HAVE_GETNAMEINFO) |
| int rc; |
| #if defined(NI_MAXHOST) |
| char tmphostname[NI_MAXHOST]; |
| #else |
| char tmphostname[256]; |
| #endif |
| |
| /* don't know if it is portable for getnameinfo() to set h_errno; |
| * clear it then see if it was set */ |
| SET_H_ERRNO(0); |
| |
| /* default flags are NI_NAMREQD; otherwise, getnameinfo() will return |
| * a numeric address string if it fails to resolve the host name; |
| * that is *not* what we want here |
| * |
| * For IPv4-mapped IPv6 addresses, drop down to IPv4 before calling |
| * getnameinfo() to avoid getnameinfo bugs (MacOS X, glibc). |
| */ |
| #if APR_HAVE_IPV6 |
| if (sockaddr->family == AF_INET6 && |
| IN6_IS_ADDR_V4MAPPED(&sockaddr->sa.sin6.sin6_addr)) { |
| struct sockaddr_in tmpsa; |
| tmpsa.sin_family = AF_INET; |
| tmpsa.sin_port = 0; |
| tmpsa.sin_addr.s_addr = ((apr_uint32_t *)sockaddr->ipaddr_ptr)[3]; |
| #ifdef SIN6_LEN |
| tmpsa.sin_len = sizeof(tmpsa); |
| #endif |
| |
| rc = getnameinfo((const struct sockaddr *)&tmpsa, sizeof(tmpsa), |
| tmphostname, sizeof(tmphostname), NULL, 0, |
| flags != 0 ? flags : NI_NAMEREQD); |
| } |
| else |
| #endif |
| rc = getnameinfo((const struct sockaddr *)&sockaddr->sa, sockaddr->salen, |
| tmphostname, sizeof(tmphostname), NULL, 0, |
| flags != 0 ? flags : NI_NAMEREQD); |
| if (rc != 0) { |
| *hostname = NULL; |
| |
| #ifndef WIN32 |
| /* something went wrong. Look at the EAI_ error code */ |
| if (rc == EAI_SYSTEM) { |
| /* EAI_SYSTEM System error returned in errno. */ |
| /* IMHO, Implementations that set h_errno a simply broken. */ |
| if (h_errno) { /* for broken implementations which set h_errno */ |
| return h_errno + APR_OS_START_SYSERR; |
| } |
| else { /* "normal" case */ |
| return errno + APR_OS_START_SYSERR; |
| } |
| } |
| else |
| #endif |
| { |
| #if defined(NEGATIVE_EAI) |
| if (rc < 0) rc = -rc; |
| #endif |
| return rc + APR_OS_START_EAIERR; /* return the EAI_ error */ |
| } |
| } |
| *hostname = sockaddr->hostname = apr_pstrdup(sockaddr->pool, |
| tmphostname); |
| return APR_SUCCESS; |
| #else |
| #if APR_HAS_THREADS && !defined(GETHOSTBYADDR_IS_THREAD_SAFE) && \ |
| defined(HAVE_GETHOSTBYADDR_R) && !defined(BEOS) |
| #ifdef GETHOSTBYNAME_R_HOSTENT_DATA |
| struct hostent_data hd; |
| #else |
| char tmp[GETHOSTBYNAME_BUFLEN]; |
| #endif |
| int hosterror; |
| struct hostent hs, *hptr; |
| |
| #if defined(GETHOSTBYNAME_R_HOSTENT_DATA) |
| /* AIX, HP/UX, D/UX et alia */ |
| gethostbyaddr_r((char *)&sockaddr->sa.sin.sin_addr, |
| sizeof(struct in_addr), AF_INET, &hs, &hd); |
| hptr = &hs; |
| #else |
| #if defined(GETHOSTBYNAME_R_GLIBC2) |
| /* Linux glibc2+ */ |
| gethostbyaddr_r((char *)&sockaddr->sa.sin.sin_addr, |
| sizeof(struct in_addr), AF_INET, |
| &hs, tmp, GETHOSTBYNAME_BUFLEN - 1, &hptr, &hosterror); |
| #else |
| /* Solaris, Irix et alia */ |
| hptr = gethostbyaddr_r((char *)&sockaddr->sa.sin.sin_addr, |
| sizeof(struct in_addr), AF_INET, |
| &hs, tmp, GETHOSTBYNAME_BUFLEN, &hosterror); |
| #endif /* !defined(GETHOSTBYNAME_R_GLIBC2) */ |
| if (!hptr) { |
| *hostname = NULL; |
| return hosterror + APR_OS_START_SYSERR; |
| } |
| #endif /* !defined(GETHOSTBYNAME_R_HOSTENT_DATA) */ |
| #else |
| struct hostent *hptr; |
| hptr = gethostbyaddr((char *)&sockaddr->sa.sin.sin_addr, |
| sizeof(struct in_addr), AF_INET); |
| #endif |
| |
| if (hptr) { |
| *hostname = sockaddr->hostname = apr_pstrdup(sockaddr->pool, hptr->h_name); |
| return APR_SUCCESS; |
| } |
| *hostname = NULL; |
| #if defined(WIN32) |
| return apr_get_netos_error(); |
| #elif defined(OS2) |
| return h_errno; |
| #else |
| return h_errno + APR_OS_START_SYSERR; |
| #endif |
| #endif |
| } |
| |
| APR_DECLARE(apr_status_t) apr_getservbyname(apr_sockaddr_t *sockaddr, |
| const char *servname) |
| { |
| struct servent *se; |
| |
| if (servname == NULL) |
| return APR_EINVAL; |
| |
| if ((se = getservbyname(servname, NULL)) != NULL){ |
| sockaddr->port = htons(se->s_port); |
| sockaddr->servname = apr_pstrdup(sockaddr->pool, servname); |
| sockaddr->sa.sin.sin_port = se->s_port; |
| return APR_SUCCESS; |
| } |
| return errno; |
| } |
| |
| #define V4MAPPED_EQUAL(a,b) \ |
| ((a)->sa.sin.sin_family == AF_INET && \ |
| (b)->sa.sin.sin_family == AF_INET6 && \ |
| IN6_IS_ADDR_V4MAPPED((struct in6_addr *)(b)->ipaddr_ptr) && \ |
| !memcmp((a)->ipaddr_ptr, \ |
| &((struct in6_addr *)(b)->ipaddr_ptr)->s6_addr[12], \ |
| (a)->ipaddr_len)) |
| |
| APR_DECLARE(int) apr_sockaddr_equal(const apr_sockaddr_t *addr1, |
| const apr_sockaddr_t *addr2) |
| { |
| if (addr1->ipaddr_len == addr2->ipaddr_len && |
| !memcmp(addr1->ipaddr_ptr, addr2->ipaddr_ptr, addr1->ipaddr_len)) { |
| return 1; |
| } |
| #if APR_HAVE_IPV6 |
| if (V4MAPPED_EQUAL(addr1, addr2)) { |
| return 1; |
| } |
| if (V4MAPPED_EQUAL(addr2, addr1)) { |
| return 1; |
| } |
| #endif |
| return 0; /* not equal */ |
| } |
| |
| static apr_status_t parse_network(apr_ipsubnet_t *ipsub, const char *network) |
| { |
| /* legacy syntax for ip addrs: a.b.c. ==> a.b.c.0/24 for example */ |
| int shift; |
| char *s, *t; |
| int octet; |
| char buf[sizeof "255.255.255.255"]; |
| |
| if (strlen(network) < sizeof buf) { |
| strcpy(buf, network); |
| } |
| else { |
| return APR_EBADIP; |
| } |
| |
| /* parse components */ |
| s = buf; |
| ipsub->sub[0] = 0; |
| ipsub->mask[0] = 0; |
| shift = 24; |
| while (*s) { |
| t = s; |
| if (!apr_isdigit(*t)) { |
| return APR_EBADIP; |
| } |
| while (apr_isdigit(*t)) { |
| ++t; |
| } |
| if (*t == '.') { |
| *t++ = 0; |
| } |
| else if (*t) { |
| return APR_EBADIP; |
| } |
| if (shift < 0) { |
| return APR_EBADIP; |
| } |
| octet = atoi(s); |
| if (octet < 0 || octet > 255) { |
| return APR_EBADIP; |
| } |
| ipsub->sub[0] |= octet << shift; |
| ipsub->mask[0] |= 0xFFUL << shift; |
| s = t; |
| shift -= 8; |
| } |
| ipsub->sub[0] = ntohl(ipsub->sub[0]); |
| ipsub->mask[0] = ntohl(ipsub->mask[0]); |
| ipsub->family = AF_INET; |
| return APR_SUCCESS; |
| } |
| |
| /* return values: |
| * APR_EINVAL not an IP address; caller should see if it is something else |
| * APR_BADIP IP address portion is is not valid |
| * APR_BADMASK mask portion is not valid |
| */ |
| |
| static apr_status_t parse_ip(apr_ipsubnet_t *ipsub, const char *ipstr, int network_allowed) |
| { |
| /* supported flavors of IP: |
| * |
| * . IPv6 numeric address string (e.g., "fe80::1") |
| * |
| * IMPORTANT: Don't store IPv4-mapped IPv6 address as an IPv6 address. |
| * |
| * . IPv4 numeric address string (e.g., "127.0.0.1") |
| * |
| * . IPv4 network string (e.g., "9.67") |
| * |
| * IMPORTANT: This network form is only allowed if network_allowed is on. |
| */ |
| int rc; |
| |
| #if APR_HAVE_IPV6 |
| rc = apr_inet_pton(AF_INET6, ipstr, ipsub->sub); |
| if (rc == 1) { |
| if (IN6_IS_ADDR_V4MAPPED((struct in6_addr *)ipsub->sub)) { |
| /* apr_ipsubnet_test() assumes that we don't create IPv4-mapped IPv6 |
| * addresses; this of course forces the user to specify IPv4 addresses |
| * in a.b.c.d style instead of ::ffff:a.b.c.d style. |
| */ |
| return APR_EBADIP; |
| } |
| ipsub->family = AF_INET6; |
| } |
| else |
| #endif |
| { |
| rc = apr_inet_pton(AF_INET, ipstr, ipsub->sub); |
| if (rc == 1) { |
| ipsub->family = AF_INET; |
| } |
| } |
| if (rc != 1) { |
| if (network_allowed) { |
| return parse_network(ipsub, ipstr); |
| } |
| else { |
| return APR_EBADIP; |
| } |
| } |
| return APR_SUCCESS; |
| } |
| |
| static int looks_like_ip(const char *ipstr) |
| { |
| if (strchr(ipstr, ':')) { |
| /* definitely not a hostname; assume it is intended to be an IPv6 address */ |
| return 1; |
| } |
| |
| /* simple IPv4 address string check */ |
| while ((*ipstr == '.') || apr_isdigit(*ipstr)) |
| ipstr++; |
| return (*ipstr == '\0'); |
| } |
| |
| static void fix_subnet(apr_ipsubnet_t *ipsub) |
| { |
| /* in case caller specified more bits in network address than are |
| * valid according to the mask, turn off the extra bits |
| */ |
| int i; |
| |
| for (i = 0; i < sizeof ipsub->mask / sizeof(apr_int32_t); i++) { |
| ipsub->sub[i] &= ipsub->mask[i]; |
| } |
| } |
| |
| /* be sure not to store any IPv4 address as a v4-mapped IPv6 address */ |
| APR_DECLARE(apr_status_t) apr_ipsubnet_create(apr_ipsubnet_t **ipsub, const char *ipstr, |
| const char *mask_or_numbits, apr_pool_t *p) |
| { |
| apr_status_t rv; |
| char *endptr; |
| long bits, maxbits = 32; |
| |
| /* filter out stuff which doesn't look remotely like an IP address; this helps |
| * callers like mod_access which have a syntax allowing hostname or IP address; |
| * APR_EINVAL tells the caller that it was probably not intended to be an IP |
| * address |
| */ |
| if (!looks_like_ip(ipstr)) { |
| return APR_EINVAL; |
| } |
| |
| *ipsub = apr_pcalloc(p, sizeof(apr_ipsubnet_t)); |
| |
| /* assume ipstr is an individual IP address, not a subnet */ |
| memset((*ipsub)->mask, 0xFF, sizeof (*ipsub)->mask); |
| |
| rv = parse_ip(*ipsub, ipstr, mask_or_numbits == NULL); |
| if (rv != APR_SUCCESS) { |
| return rv; |
| } |
| |
| if (mask_or_numbits) { |
| #if APR_HAVE_IPV6 |
| if ((*ipsub)->family == AF_INET6) { |
| maxbits = 128; |
| } |
| #endif |
| bits = strtol(mask_or_numbits, &endptr, 10); |
| if (*endptr == '\0' && bits > 0 && bits <= maxbits) { |
| /* valid num-bits string; fill in mask appropriately */ |
| int cur_entry = 0; |
| apr_int32_t cur_bit_value; |
| |
| memset((*ipsub)->mask, 0, sizeof (*ipsub)->mask); |
| while (bits > 32) { |
| (*ipsub)->mask[cur_entry] = 0xFFFFFFFF; /* all 32 bits */ |
| bits -= 32; |
| ++cur_entry; |
| } |
| cur_bit_value = 0x80000000; |
| while (bits) { |
| (*ipsub)->mask[cur_entry] |= cur_bit_value; |
| --bits; |
| cur_bit_value /= 2; |
| } |
| (*ipsub)->mask[cur_entry] = htonl((*ipsub)->mask[cur_entry]); |
| } |
| else if (apr_inet_pton(AF_INET, mask_or_numbits, (*ipsub)->mask) == 1 && |
| (*ipsub)->family == AF_INET) { |
| /* valid IPv4 netmask */ |
| } |
| else { |
| return APR_EBADMASK; |
| } |
| } |
| |
| fix_subnet(*ipsub); |
| |
| return APR_SUCCESS; |
| } |
| |
| APR_DECLARE(int) apr_ipsubnet_test(apr_ipsubnet_t *ipsub, apr_sockaddr_t *sa) |
| { |
| #if APR_HAVE_IPV6 |
| /* XXX This line will segv on Win32 build with APR_HAVE_IPV6, |
| * but without the IPV6 drivers installed. |
| */ |
| if (sa->sa.sin.sin_family == AF_INET) { |
| if (ipsub->family == AF_INET && |
| ((sa->sa.sin.sin_addr.s_addr & ipsub->mask[0]) == ipsub->sub[0])) { |
| return 1; |
| } |
| } |
| else if (IN6_IS_ADDR_V4MAPPED((struct in6_addr *)sa->ipaddr_ptr)) { |
| if (ipsub->family == AF_INET && |
| (((apr_uint32_t *)sa->ipaddr_ptr)[3] & ipsub->mask[0]) == ipsub->sub[0]) { |
| return 1; |
| } |
| } |
| else { |
| apr_uint32_t *addr = (apr_uint32_t *)sa->ipaddr_ptr; |
| |
| if ((addr[0] & ipsub->mask[0]) == ipsub->sub[0] && |
| (addr[1] & ipsub->mask[1]) == ipsub->sub[1] && |
| (addr[2] & ipsub->mask[2]) == ipsub->sub[2] && |
| (addr[3] & ipsub->mask[3]) == ipsub->sub[3]) { |
| return 1; |
| } |
| } |
| #else |
| if ((sa->sa.sin.sin_addr.s_addr & ipsub->mask[0]) == ipsub->sub[0]) { |
| return 1; |
| } |
| #endif /* APR_HAVE_IPV6 */ |
| return 0; /* no match */ |
| } |
