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📄 base64.h(1.99 KB)
📄 bswap.c(2.01 KB)
📄 chown.c(1.75 KB)
📄 cloexec.c(2.05 KB)
📄 closefrom.c(1.92 KB)
📄 concat.c(2.91 KB)
📄 copyhostent.c(3.07 KB)
📄 ct.c(2.34 KB)
📄 daemon.c(2.36 KB)
📄 doxygen.c(1.89 KB)
📄 dumpdata.c(2.62 KB)
📄 ecalloc.3(2.71 KB)
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📄 emalloc.c(1.91 KB)
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📄 eread.c(1.9 KB)
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📄 errx.c(1.8 KB)
📄 esetenv.c(1.88 KB)
📄 estrdup.c(1.89 KB)
📄 ewrite.c(1.91 KB)
📄 fchown.c(1.75 KB)
📄 flock.c(3.82 KB)
📄 fnmatch.c(5.05 KB)
📄 fnmatch.hin(2.3 KB)
📄 freeaddrinfo.c(1.94 KB)
📄 freehostent.c(2.03 KB)
📄 gai_strerror.c(2.62 KB)
📄 get_default_username.c(2.58 KB)
📄 get_window_size.c(3.38 KB)
📄 getaddrinfo-test.c(4.04 KB)
📄 getaddrinfo.c(10.05 KB)
📄 getaddrinfo_hostspec.c(3.17 KB)
📄 getarg.3(9.56 KB)
📄 getarg.c(15.34 KB)
📄 getarg.h(3.15 KB)
📄 getcap.c(25.29 KB)
📄 getcwd.c(1.94 KB)
📄 getdtablesize.c(2.89 KB)
📄 getegid.c(1.76 KB)
📄 geteuid.c(1.76 KB)
📄 getgid.c(1.75 KB)
📄 gethostname.c(2.34 KB)
📄 getifaddrs.c(32.46 KB)
📄 getipnodebyaddr.c(2.33 KB)
📄 getipnodebyname.c(2.52 KB)
📄 getnameinfo.c(3.51 KB)
📄 getnameinfo_verified.c(3.14 KB)
📄 getopt.c(3.82 KB)
📄 getprogname.c(1.84 KB)
📄 gettimeofday.c(2.43 KB)
📄 getuid.c(1.75 KB)
📄 getusershell.c(4.47 KB)
📄 glob.c(19.59 KB)
📄 glob.hin(3.83 KB)
📄 h_errno.c(1.69 KB)
📄 hex-test.c(3.02 KB)
📄 hex.c(2.85 KB)
📄 hex.h(2.08 KB)
📄 hostent_find_fqdn.c(2.05 KB)
📄 hstrerror.c(2.54 KB)
📄 ifaddrs.hin(2.52 KB)
📄 inet_aton.c(1.94 KB)
📄 inet_ntop.c(3.97 KB)
📄 inet_pton.c(2.94 KB)
📄 initgroups.c(1.75 KB)
📄 innetgr.c(1.79 KB)
📄 install-sh(5.47 KB)
📄 iruserok.c(7.48 KB)
📄 issuid.c(2.01 KB)
📄 k_getpwnam.c(2.08 KB)
📄 k_getpwuid.c(2.07 KB)
📄 localtime_r.c(2.03 KB)
📄 lstat.c(1.76 KB)
📄 memmove.c(2.02 KB)
📄 mini_inetd.c(5.67 KB)
📄 missing(6.14 KB)
📄 mkinstalldirs(671 B)
📄 mkstemp.c(2.4 KB)
📄 ndbm_wrap.c(5.18 KB)
📄 ndbm_wrap.h(3.13 KB)
📄 net_read.c(3.13 KB)
📄 net_write.c(2.9 KB)
📄 parse_bytes-test.c(2.81 KB)
📄 parse_bytes.c(2.55 KB)
📄 parse_bytes.h(2.13 KB)
📄 parse_reply-test.c(3.49 KB)
📄 parse_time-test.c(4.07 KB)
📄 parse_time.3(4.82 KB)
📄 parse_time.c(2.49 KB)
📄 parse_time.h(2.19 KB)
📄 parse_units.c(7.41 KB)
📄 parse_units.h(2.73 KB)
📄 putenv.c(2.51 KB)
📄 qsort.c(5.35 KB)
📄 rand.c(1.84 KB)
📄 rcmd.c(1.92 KB)
📄 readv.c(2.17 KB)
📄 realloc.c(1.83 KB)
📄 recvmsg.c(2.26 KB)
📄 resolve-test.c(4.91 KB)
📄 resolve.c(21.5 KB)
📄 resolve.h(7.26 KB)
📄 rkpty.c(7.89 KB)
📄 roken-common.h(11.68 KB)
📄 roken.awk(875 B)
📄 roken.h.in(27.79 KB)
📄 roken_gethostby.c(7.26 KB)
📄 rtbl.3(6.53 KB)
📄 rtbl.c(12.11 KB)
📄 rtbl.h(3.61 KB)
📄 search.hin(1007 B)
📄 sendmsg.c(5.37 KB)
📄 setegid.c(1.9 KB)
📄 setenv.c(2.37 KB)
📄 seteuid.c(1.9 KB)
📄 setprogname.c(2.44 KB)
📄 signal.c(2.34 KB)
📄 simple_exec.c(7.51 KB)
📄 snprintf-test.c(8.16 KB)
📄 snprintf.c(14.93 KB)
📄 socket.c(7.89 KB)
📄 socket_wrapper.c(40.97 KB)
📄 socket_wrapper.h(4.52 KB)
📄 strcasecmp.c(2 KB)
📄 strcollect.c(2.64 KB)
📄 strdup.c(1.84 KB)
📄 strerror.c(2 KB)
📄 strerror_r.c(2.73 KB)
📄 strftime.c(8.32 KB)
📄 strlcat.c(2.21 KB)
📄 strlcpy.c(2.23 KB)
📄 strlwr.c(1.86 KB)
📄 strncasecmp.c(2.04 KB)
📄 strndup.c(1.96 KB)
📄 strnlen.c(1.79 KB)
📄 strpftime-test.c(6.04 KB)
📄 strpftime-test.h(2.19 KB)
📄 strpool.c(2.74 KB)
📄 strptime.c(9.21 KB)
📄 strsep.c(1.95 KB)
📄 strsep_copy.c(2.22 KB)
📄 strtok_r.c(2.05 KB)
📄 strupr.c(1.86 KB)
📄 swab.c(1.87 KB)
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📄 test-mem.h(1.85 KB)
📄 test-readenv.c(3 KB)
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📄 tm2time.c(2.01 KB)
📄 tsearch.c(4.17 KB)
📄 unsetenv.c(2.14 KB)
📄 unvis.c(6.39 KB)
📄 verify.c(2.1 KB)
📄 verr.c(1.79 KB)
📄 verrx.c(1.79 KB)
📄 version-script.map(3.33 KB)
📄 vis.c(11.45 KB)
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📄 vwarn.c(1.77 KB)
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📄 warn.c(1.75 KB)
📄 warnerr.c(2.12 KB)
📄 warnx.c(1.79 KB)
📄 write_pid.c(2.65 KB)
📄 writev.c(2.15 KB)
📄 xdbm.h(1.91 KB)
📄 xfree.c(1.7 KB)

Editing: getaddrinfo.c

/*
 * Copyright (c) 1999 - 2001 Kungliga Tekniska Högskolan
 * (Royal Institute of Technology, Stockholm, Sweden).
 * 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 Institute 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 INSTITUTE 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 INSTITUTE 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.
 */

#include <config.h>

#include "roken.h"

/*
 * uses hints->ai_socktype and hints->ai_protocol
 */

static int
get_port_protocol_socktype (const char *servname,
			    const struct addrinfo *hints,
			    int *port,
			    int *protocol,
			    int *socktype)
{
    struct servent *se;
    const char *proto_str = NULL;

*socktype = 0;

if (hints != NULL && hints->ai_protocol != 0) {
	struct protoent *protoent = getprotobynumber (hints->ai_protocol);

if (protoent == NULL)
	    return EAI_SOCKTYPE; /* XXX */

proto_str = protoent->p_name;
	*protocol = protoent->p_proto;
    }

if (hints != NULL)
	*socktype = hints->ai_socktype;

if (*socktype == SOCK_STREAM) {
	se = getservbyname (servname, proto_str ? proto_str : "tcp");
	if (proto_str == NULL)
	    *protocol = IPPROTO_TCP;
    } else if (*socktype == SOCK_DGRAM) {
	se = getservbyname (servname, proto_str ? proto_str : "udp");
	if (proto_str == NULL)
	    *protocol = IPPROTO_UDP;
    } else if (*socktype == 0) {
	if (proto_str != NULL) {
	    se = getservbyname (servname, proto_str);
	} else {
	    se = getservbyname (servname, "tcp");
	    *protocol = IPPROTO_TCP;
	    *socktype = SOCK_STREAM;
	    if (se == NULL) {
		se = getservbyname (servname, "udp");
		*protocol = IPPROTO_UDP;
		*socktype = SOCK_DGRAM;
	    }
	}
    } else
	return EAI_SOCKTYPE;

if (se == NULL) {
	char *endstr;

*port = htons(strtol (servname, &endstr, 10));
	if (servname == endstr)
	    return EAI_NONAME;
    } else {
	*port = se->s_port;
    }
    return 0;
}

static int
add_one (int port, int protocol, int socktype,
	 struct addrinfo ***ptr,
	 int (*func)(struct addrinfo *, void *data, int port),
	 void *data,
	 char *canonname)
{
    struct addrinfo *a;
    int ret;

a = malloc (sizeof (*a));
    if (a == NULL)
	return EAI_MEMORY;
    memset (a, 0, sizeof(*a));
    a->ai_flags     = 0;
    a->ai_next      = NULL;
    a->ai_protocol  = protocol;
    a->ai_socktype  = socktype;
    a->ai_canonname = canonname;
    ret = (*func)(a, data, port);
    if (ret) {
	free (a);
	return ret;
    }
    **ptr = a;
    *ptr = &a->ai_next;
    return 0;
}

static int
const_v4 (struct addrinfo *a, void *data, int port)
{
    struct sockaddr_in *sin4;
    struct in_addr *addr = (struct in_addr *)data;

a->ai_family  = PF_INET;
    a->ai_addrlen = sizeof(*sin4);
    a->ai_addr    = malloc (sizeof(*sin4));
    if (a->ai_addr == NULL)
	return EAI_MEMORY;
    sin4 = (struct sockaddr_in *)a->ai_addr;
    memset (sin4, 0, sizeof(*sin4));
    sin4->sin_family = AF_INET;
    sin4->sin_port   = port;
    sin4->sin_addr   = *addr;
    return 0;
}

#ifdef HAVE_IPV6
static int
const_v6 (struct addrinfo *a, void *data, int port)
{
    struct sockaddr_in6 *sin6;
    struct in6_addr *addr = (struct in6_addr *)data;

a->ai_family  = PF_INET6;
    a->ai_addrlen = sizeof(*sin6);
    a->ai_addr    = malloc (sizeof(*sin6));
    if (a->ai_addr == NULL)
	return EAI_MEMORY;
    sin6 = (struct sockaddr_in6 *)a->ai_addr;
    memset (sin6, 0, sizeof(*sin6));
    sin6->sin6_family = AF_INET6;
    sin6->sin6_port   = port;
    sin6->sin6_addr   = *addr;
    return 0;
}
#endif

/* this is mostly a hack for some versions of AIX that has a prototype
   for in6addr_loopback but no actual symbol in libc */
#if defined(HAVE_IPV6) && !defined(HAVE_IN6ADDR_LOOPBACK) && defined(IN6ADDR_LOOPBACK_INIT)
#define in6addr_loopback _roken_in6addr_loopback
struct in6_addr in6addr_loopback = IN6ADDR_LOOPBACK_INIT;
#endif

static int
get_null (const struct addrinfo *hints,
	  int port, int protocol, int socktype,
	  struct addrinfo **res)
{
    struct in_addr v4_addr;
#ifdef HAVE_IPV6
    struct in6_addr v6_addr;
#endif
    struct addrinfo *first = NULL;
    struct addrinfo **current = &first;
    int family = PF_UNSPEC;
    int ret;

if (hints != NULL)
	family = hints->ai_family;

if (hints && hints->ai_flags & AI_PASSIVE) {
	v4_addr.s_addr = INADDR_ANY;
#ifdef HAVE_IPV6
	v6_addr        = in6addr_any;
#endif
    } else {
	v4_addr.s_addr = htonl(INADDR_LOOPBACK);
#ifdef HAVE_IPV6
	v6_addr        = in6addr_loopback;
#endif
    }

#ifdef HAVE_IPV6
    if (family == PF_INET6 || family == PF_UNSPEC) {
	ret = add_one (port, protocol, socktype,
		       &current, const_v6, &v6_addr, NULL);
    }
#endif
    if (family == PF_INET || family == PF_UNSPEC) {
	ret = add_one (port, protocol, socktype,
		       &current, const_v4, &v4_addr, NULL);
    }
    *res = first;
    return 0;
}

static int
add_hostent (int port, int protocol, int socktype,
	     struct addrinfo ***current,
	     int (*func)(struct addrinfo *, void *data, int port),
	     struct hostent *he, int *flags)
{
    int ret;
    char *canonname = NULL;
    char **h;

if (*flags & AI_CANONNAME) {
	struct hostent *he2 = NULL;
	const char *tmp_canon;

tmp_canon = hostent_find_fqdn (he);
	if (strchr (tmp_canon, '.') == NULL) {
	    int error;

he2 = getipnodebyaddr (he->h_addr_list[0], he->h_length,
				   he->h_addrtype, &error);
	    if (he2 != NULL) {
		const char *tmp = hostent_find_fqdn (he2);

if (strchr (tmp, '.') != NULL)
		    tmp_canon = tmp;
	    }
	}

canonname = strdup (tmp_canon);
	if (he2 != NULL)
	    freehostent (he2);
	if (canonname == NULL)
	    return EAI_MEMORY;
    }

for (h = he->h_addr_list; *h != NULL; ++h) {
	ret = add_one (port, protocol, socktype,
		       current, func, *h, canonname);
	if (ret)
	    return ret;
	if (*flags & AI_CANONNAME) {
	    *flags &= ~AI_CANONNAME;
	    canonname = NULL;
	}
    }
    return 0;
}

static int
get_number (const char *nodename,
	    const struct addrinfo *hints,
	    int port, int protocol, int socktype,
	    struct addrinfo **res)
{
    struct addrinfo *first = NULL;
    struct addrinfo **current = &first;
    int family = PF_UNSPEC;
    int ret;

if (hints != NULL) {
	family = hints->ai_family;
    }

#ifdef HAVE_IPV6
    if (family == PF_INET6 || family == PF_UNSPEC) {
	struct in6_addr v6_addr;

if (inet_pton (PF_INET6, nodename, &v6_addr) == 1) {
	    ret = add_one (port, protocol, socktype,
			   &current, const_v6, &v6_addr, NULL);
	    *res = first;
	    return ret;
	}
    }
#endif
    if (family == PF_INET || family == PF_UNSPEC) {
	struct in_addr v4_addr;

if (inet_pton (PF_INET, nodename, &v4_addr) == 1) {
	    ret = add_one (port, protocol, socktype,
			   &current, const_v4, &v4_addr, NULL);
	    *res = first;
	    return ret;
	}
    }
    return EAI_NONAME;
}

static int
get_nodes (const char *nodename,
	   const struct addrinfo *hints,
	   int port, int protocol, int socktype,
	   struct addrinfo **res)
{
    struct addrinfo *first = NULL;
    struct addrinfo **current = &first;
    int family = PF_UNSPEC;
    int flags  = 0;
    int ret = EAI_NONAME;
    int error;

if (hints != NULL) {
	family = hints->ai_family;
	flags  = hints->ai_flags;
    }

#ifdef HAVE_IPV6
    if (family == PF_INET6 || family == PF_UNSPEC) {
	struct hostent *he;

he = getipnodebyname (nodename, PF_INET6, 0, &error);

if (he != NULL) {
	    ret = add_hostent (port, protocol, socktype,
			       &current, const_v6, he, &flags);
	    freehostent (he);
	}
    }
#endif
    if (family == PF_INET || family == PF_UNSPEC) {
	struct hostent *he;

he = getipnodebyname (nodename, PF_INET, 0, &error);

if (he != NULL) {
	    ret = add_hostent (port, protocol, socktype,
			       &current, const_v4, he, &flags);
	    freehostent (he);
	}
    }
    *res = first;
    return ret;
}

/*
 * hints:
 *
 * struct addrinfo {
 *     int    ai_flags;
 *     int    ai_family;
 *     int    ai_socktype;
 *     int    ai_protocol;
 * ...
 * };
 */

ROKEN_LIB_FUNCTION int ROKEN_LIB_CALL
getaddrinfo(const char *nodename,
	    const char *servname,
	    const struct addrinfo *hints,
	    struct addrinfo **res)
{
    int ret;
    int port     = 0;
    int protocol = 0;
    int socktype = 0;

*res = NULL;

if (servname == NULL && nodename == NULL)
	return EAI_NONAME;

if (hints != NULL
	&& hints->ai_family != PF_UNSPEC
	&& hints->ai_family != PF_INET
#ifdef HAVE_IPV6
	&& hints->ai_family != PF_INET6
#endif
	)
	return EAI_FAMILY;

if (servname != NULL) {
	ret = get_port_protocol_socktype (servname, hints,
					  &port, &protocol, &socktype);
	if (ret)
	    return ret;
    }
    if (nodename != NULL) {
	ret = get_number (nodename, hints, port, protocol, socktype, res);
	if (ret) {
	    if(hints && hints->ai_flags & AI_NUMERICHOST)
		ret = EAI_NONAME;
	    else
		ret = get_nodes (nodename, hints, port, protocol, socktype,
				 res);
	}
    } else {
	ret = get_null (hints, port, protocol, socktype, res);
    }
    if (ret)
	freeaddrinfo (*res);
    return ret;
}

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Editing: getaddrinfo.c

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