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| -rw-r--r-- | cvs20050825/fake-rfc2553.c | 224 | ||||
| -rw-r--r-- | cvs20050825/fake-rfc2553.h | 168 |
2 files changed, 392 insertions, 0 deletions
diff --git a/cvs20050825/fake-rfc2553.c b/cvs20050825/fake-rfc2553.c new file mode 100644 index 00000000..0186b530 --- /dev/null +++ b/cvs20050825/fake-rfc2553.c @@ -0,0 +1,224 @@ +/* + * Copyright (C) 2000-2003 Damien Miller. All rights reserved. + * Copyright (C) 1999 WIDE Project. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the project nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * Pseudo-implementation of RFC2553 name / address resolution functions + * + * But these functions are not implemented correctly. The minimum subset + * is implemented for ssh use only. For example, this routine assumes + * that ai_family is AF_INET. Don't use it for another purpose. + */ + +#include "includes.h" + +RCSID("$Id: fake-rfc2553.c,v 1.5 2003/09/22 02:08:23 dtucker Exp $"); + +#ifndef HAVE_GETNAMEINFO +int getnameinfo(const struct sockaddr *sa, size_t salen, char *host, + size_t hostlen, char *serv, size_t servlen, int flags) +{ + struct sockaddr_in *sin = (struct sockaddr_in *)sa; + struct hostent *hp; + char tmpserv[16]; + + if (serv != NULL) { + snprintf(tmpserv, sizeof(tmpserv), "%d", ntohs(sin->sin_port)); + if (strlcpy(serv, tmpserv, servlen) >= servlen) + return (EAI_MEMORY); + } + + if (host != NULL) { + if (flags & NI_NUMERICHOST) { + if (strlcpy(host, inet_ntoa(sin->sin_addr), + hostlen) >= hostlen) + return (EAI_MEMORY); + else + return (0); + } else { + hp = gethostbyaddr((char *)&sin->sin_addr, + sizeof(struct in_addr), AF_INET); + if (hp == NULL) + return (EAI_NODATA); + + if (strlcpy(host, hp->h_name, hostlen) >= hostlen) + return (EAI_MEMORY); + else + return (0); + } + } + return (0); +} +#endif /* !HAVE_GETNAMEINFO */ + +#ifndef HAVE_GAI_STRERROR +#ifdef HAVE_CONST_GAI_STRERROR_PROTO +const char * +#else +char * +#endif +gai_strerror(int err) +{ + switch (err) { + case EAI_NODATA: + return ("no address associated with name"); + case EAI_MEMORY: + return ("memory allocation failure."); + case EAI_NONAME: + return ("nodename nor servname provided, or not known"); + default: + return ("unknown/invalid error."); + } +} +#endif /* !HAVE_GAI_STRERROR */ + +#ifndef HAVE_FREEADDRINFO +void +freeaddrinfo(struct addrinfo *ai) +{ + struct addrinfo *next; + + for(; ai != NULL;) { + next = ai->ai_next; + free(ai); + ai = next; + } +} +#endif /* !HAVE_FREEADDRINFO */ + +#ifndef HAVE_GETADDRINFO +static struct +addrinfo *malloc_ai(int port, u_long addr, const struct addrinfo *hints) +{ + struct addrinfo *ai; + + ai = malloc(sizeof(*ai) + sizeof(struct sockaddr_in)); + if (ai == NULL) + return (NULL); + + memset(ai, '\0', sizeof(*ai) + sizeof(struct sockaddr_in)); + + ai->ai_addr = (struct sockaddr *)(ai + 1); + /* XXX -- ssh doesn't use sa_len */ + ai->ai_addrlen = sizeof(struct sockaddr_in); + ai->ai_addr->sa_family = ai->ai_family = AF_INET; + + ((struct sockaddr_in *)(ai)->ai_addr)->sin_port = port; + ((struct sockaddr_in *)(ai)->ai_addr)->sin_addr.s_addr = addr; + + /* XXX: the following is not generally correct, but does what we want */ + if (hints->ai_socktype) + ai->ai_socktype = hints->ai_socktype; + else + ai->ai_socktype = SOCK_STREAM; + + if (hints->ai_protocol) + ai->ai_protocol = hints->ai_protocol; + + return (ai); +} + +int +getaddrinfo(const char *hostname, const char *servname, + const struct addrinfo *hints, struct addrinfo **res) +{ + struct hostent *hp; + struct servent *sp; + struct in_addr in; + int i; + long int port; + u_long addr; + + port = 0; + if (servname != NULL) { + char *cp; + + port = strtol(servname, &cp, 10); + if (port > 0 && port <= 65535 && *cp == '\0') + port = htons(port); + else if ((sp = getservbyname(servname, NULL)) != NULL) + port = sp->s_port; + else + port = 0; + } + + if (hints && hints->ai_flags & AI_PASSIVE) { + addr = htonl(0x00000000); + if (hostname && inet_aton(hostname, &in) != 0) + addr = in.s_addr; + *res = malloc_ai(port, addr, hints); + if (*res == NULL) + return (EAI_MEMORY); + return (0); + } + + if (!hostname) { + *res = malloc_ai(port, htonl(0x7f000001), hints); + if (*res == NULL) + return (EAI_MEMORY); + return (0); + } + + if (inet_aton(hostname, &in)) { + *res = malloc_ai(port, in.s_addr, hints); + if (*res == NULL) + return (EAI_MEMORY); + return (0); + } + + /* Don't try DNS if AI_NUMERICHOST is set */ + if (hints && hints->ai_flags & AI_NUMERICHOST) + return (EAI_NONAME); + + hp = gethostbyname(hostname); + if (hp && hp->h_name && hp->h_name[0] && hp->h_addr_list[0]) { + struct addrinfo *cur, *prev; + + cur = prev = *res = NULL; + for (i = 0; hp->h_addr_list[i]; i++) { + struct in_addr *in = (struct in_addr *)hp->h_addr_list[i]; + + cur = malloc_ai(port, in->s_addr, hints); + if (cur == NULL) { + if (*res != NULL) + freeaddrinfo(*res); + return (EAI_MEMORY); + } + if (prev) + prev->ai_next = cur; + else + *res = cur; + + prev = cur; + } + return (0); + } + + return (EAI_NODATA); +} +#endif /* !HAVE_GETADDRINFO */ diff --git a/cvs20050825/fake-rfc2553.h b/cvs20050825/fake-rfc2553.h new file mode 100644 index 00000000..cbcf7f72 --- /dev/null +++ b/cvs20050825/fake-rfc2553.h @@ -0,0 +1,168 @@ +/* $Id: fake-rfc2553.h,v 1.12 2005/08/03 05:36:21 dtucker Exp $ */ + +/* + * Copyright (C) 2000-2003 Damien Miller. All rights reserved. + * Copyright (C) 1999 WIDE Project. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the project nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +/* + * Pseudo-implementation of RFC2553 name / address resolution functions + * + * But these functions are not implemented correctly. The minimum subset + * is implemented for ssh use only. For example, this routine assumes + * that ai_family is AF_INET. Don't use it for another purpose. + */ + +#ifndef _FAKE_RFC2553_H +#define _FAKE_RFC2553_H + +#include "includes.h" +#include "sys/types.h" + +/* + * First, socket and INET6 related definitions + */ +#ifndef HAVE_STRUCT_SOCKADDR_STORAGE +# define _SS_MAXSIZE 128 /* Implementation specific max size */ +# define _SS_PADSIZE (_SS_MAXSIZE - sizeof (struct sockaddr)) +struct sockaddr_storage { + struct sockaddr ss_sa; + char __ss_pad2[_SS_PADSIZE]; +}; +# define ss_family ss_sa.sa_family +#endif /* !HAVE_STRUCT_SOCKADDR_STORAGE */ + +#ifndef IN6_IS_ADDR_LOOPBACK +# define IN6_IS_ADDR_LOOPBACK(a) \ + (((u_int32_t *)(a))[0] == 0 && ((u_int32_t *)(a))[1] == 0 && \ + ((u_int32_t *)(a))[2] == 0 && ((u_int32_t *)(a))[3] == htonl(1)) +#endif /* !IN6_IS_ADDR_LOOPBACK */ + +#ifndef HAVE_STRUCT_IN6_ADDR +struct in6_addr { + u_int8_t s6_addr[16]; +}; +#endif /* !HAVE_STRUCT_IN6_ADDR */ + +#ifndef HAVE_STRUCT_SOCKADDR_IN6 +struct sockaddr_in6 { + unsigned short sin6_family; + u_int16_t sin6_port; + u_int32_t sin6_flowinfo; + struct in6_addr sin6_addr; +}; +#endif /* !HAVE_STRUCT_SOCKADDR_IN6 */ + +#ifndef AF_INET6 +/* Define it to something that should never appear */ +#define AF_INET6 AF_MAX +#endif + +/* + * Next, RFC2553 name / address resolution API + */ + +#ifndef NI_NUMERICHOST +# define NI_NUMERICHOST (1) +#endif +#ifndef NI_NAMEREQD +# define NI_NAMEREQD (1<<1) +#endif +#ifndef NI_NUMERICSERV +# define NI_NUMERICSERV (1<<2) +#endif + +#ifndef AI_PASSIVE +# define AI_PASSIVE (1) +#endif +#ifndef AI_CANONNAME +# define AI_CANONNAME (1<<1) +#endif +#ifndef AI_NUMERICHOST +# define AI_NUMERICHOST (1<<2) +#endif + +#ifndef NI_MAXSERV +# define NI_MAXSERV 32 +#endif /* !NI_MAXSERV */ +#ifndef NI_MAXHOST +# define NI_MAXHOST 1025 +#endif /* !NI_MAXHOST */ + +#ifndef EAI_NODATA +# define EAI_NODATA (INT_MAX - 1) +#endif +#ifndef EAI_MEMORY +# define EAI_MEMORY (INT_MAX - 2) +#endif +#ifndef EAI_NONAME +# define EAI_NONAME (INT_MAX - 3) +#endif +#ifndef EAI_SYSTEM +# define EAI_SYSTEM (INT_MAX - 4) +#endif + +#ifndef HAVE_STRUCT_ADDRINFO +struct addrinfo { + int ai_flags; /* AI_PASSIVE, AI_CANONNAME */ + int ai_family; /* PF_xxx */ + int ai_socktype; /* SOCK_xxx */ + int ai_protocol; /* 0 or IPPROTO_xxx for IPv4 and IPv6 */ + size_t ai_addrlen; /* length of ai_addr */ + char *ai_canonname; /* canonical name for hostname */ + struct sockaddr *ai_addr; /* binary address */ + struct addrinfo *ai_next; /* next structure in linked list */ +}; +#endif /* !HAVE_STRUCT_ADDRINFO */ + +#ifndef HAVE_GETADDRINFO +#ifdef getaddrinfo +# undef getaddrinfo +#endif +#define getaddrinfo(a,b,c,d) (ssh_getaddrinfo(a,b,c,d)) +int getaddrinfo(const char *, const char *, + const struct addrinfo *, struct addrinfo **); +#endif /* !HAVE_GETADDRINFO */ + +#if !defined(HAVE_GAI_STRERROR) && !defined(HAVE_CONST_GAI_STRERROR_PROTO) +#define gai_strerror(a) (ssh_gai_strerror(a)) +char *gai_strerror(int); +#endif /* !HAVE_GAI_STRERROR */ + +#ifndef HAVE_FREEADDRINFO +#define freeaddrinfo(a) (ssh_freeaddrinfo(a)) +void freeaddrinfo(struct addrinfo *); +#endif /* !HAVE_FREEADDRINFO */ + +#ifndef HAVE_GETNAMEINFO +#define getnameinfo(a,b,c,d,e,f,g) (ssh_getnameinfo(a,b,c,d,e,f,g)) +int getnameinfo(const struct sockaddr *, size_t, char *, size_t, + char *, size_t, int); +#endif /* !HAVE_GETNAMEINFO */ + +#endif /* !_FAKE_RFC2553_H */ + |