diff options
Diffstat (limited to 'compat/fake-rfc2553.c')
| -rw-r--r-- | compat/fake-rfc2553.c | 267 |
1 files changed, 0 insertions, 267 deletions
diff --git a/compat/fake-rfc2553.c b/compat/fake-rfc2553.c deleted file mode 100644 index cfe4c39..0000000 --- a/compat/fake-rfc2553.c +++ /dev/null @@ -1,267 +0,0 @@ -/* - * 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 "tclInt.h" - -TCL_DECLARE_MUTEX(netdbMutex) - -#ifndef HAVE_GETNAMEINFO -#ifndef HAVE_STRLCPY -static size_t -strlcpy(char *dst, const char *src, size_t siz) -{ - char *d = dst; - const char *s = src; - size_t n = siz; - - /* Copy as many bytes as will fit */ - if (n != 0 && --n != 0) { - do { - if ((*d++ = *s++) == 0) - break; - } while (--n != 0); - } - - /* Not enough room in dst, add NUL and traverse rest of src */ - if (n == 0) { - if (siz != 0) - *d = '\0'; /* NUL-terminate dst */ - while (*s++) - ; - } - - return(s - src - 1); /* count does not include NUL */ -} -#endif - -int fake_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]; - (void)salen; - - if (sa->sa_family != AF_UNSPEC && sa->sa_family != AF_INET) - return (EAI_FAMILY); - 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) { - size_t len; - Tcl_MutexLock(&netdbMutex); - len = strlcpy(host, inet_ntoa(sin->sin_addr), hostlen); - Tcl_MutexUnlock(&netdbMutex); - if (len >= hostlen) { - return (EAI_MEMORY); - } else { - return (0); - } - } else { - int ret; - Tcl_MutexLock(&netdbMutex); - hp = gethostbyaddr((char *)&sin->sin_addr, - sizeof(struct in_addr), AF_INET); - if (hp == NULL) { - ret = EAI_NODATA; - } else if (strlcpy(host, hp->h_name, hostlen) - >= hostlen) { - ret = EAI_MEMORY; - } else { - ret = 0; - } - Tcl_MutexUnlock(&netdbMutex); - return ret; - } - } - return (0); -} -#endif /* !HAVE_GETNAMEINFO */ - -#ifndef HAVE_GAI_STRERROR -const char * -fake_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"); - case EAI_FAMILY: - return ("ai_family not supported"); - default: - return ("unknown/invalid error."); - } -} -#endif /* !HAVE_GAI_STRERROR */ - -#ifndef HAVE_FREEADDRINFO -void -fake_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 = (struct addrinfo *)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 -fake_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 (hints && hints->ai_family != AF_UNSPEC && - hints->ai_family != AF_INET) - return (EAI_FAMILY); - if (servname != NULL) { - char *cp; - - port = strtol(servname, &cp, 10); - if (port > 0 && port <= 65535 && *cp == '\0') - port = htons((unsigned short)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); - - Tcl_MutexLock(&netdbMutex); - 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); - Tcl_MutexUnlock(&netdbMutex); - return (EAI_MEMORY); - } - if (prev) - prev->ai_next = cur; - else - *res = cur; - - prev = cur; - } - Tcl_MutexUnlock(&netdbMutex); - return (0); - } - Tcl_MutexUnlock(&netdbMutex); - return (EAI_NODATA); -} -#endif /* !HAVE_GETADDRINFO */ |