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-rw-r--r--libmailutils/sockaddr/fromnode.c253
1 files changed, 253 insertions, 0 deletions
diff --git a/libmailutils/sockaddr/fromnode.c b/libmailutils/sockaddr/fromnode.c
new file mode 100644
index 000000000..d79b9523a
--- /dev/null
+++ b/libmailutils/sockaddr/fromnode.c
@@ -0,0 +1,253 @@
+/* GNU Mailutils -- a suite of utilities for electronic mail
+ Copyright (C) 2011 Free Software Foundation, Inc.
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 3 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General
+ Public License along with this library. If not, see
+ <http://www.gnu.org/licenses/>. */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <sys/stat.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <errno.h>
+#include <string.h>
+#include <mailutils/sockaddr.h>
+#include <mailutils/url.h>
+#include <mailutils/io.h>
+#include <mailutils/errno.h>
+#include <mailutils/error.h>
+#include <mailutils/nls.h>
+
+static struct mu_sockaddr *
+match_sa (struct mu_sockaddr *list, struct sockaddr *sa, socklen_t len)
+{
+ for (; list; list = list->next)
+ if (len == list->addrlen && memcmp (list->addr, sa, len) == 0)
+ break;
+ return list;
+}
+
+int
+mu_sockaddr_from_node (struct mu_sockaddr **retval, const char *node,
+ const char *serv, struct mu_sockaddr_hints *mh)
+{
+ int rc;
+
+ if (!mh)
+ {
+ static struct mu_sockaddr_hints nullhints = { 0, AF_UNSPEC };
+ mh = &nullhints;
+ }
+
+ if (mh->family == AF_UNIX)
+ {
+ size_t slen;
+ struct sockaddr_un s_un;
+
+ if (!node)
+ return MU_ERR_NONAME;
+ slen = strlen (node);
+ if (slen >= sizeof s_un.sun_path)
+ return MU_ERR_BUFSPACE;
+
+ s_un.sun_family = AF_UNIX;
+ strcpy(s_un.sun_path, node);
+ return mu_sockaddr_create (retval, (struct sockaddr*) &s_un,
+ sizeof (s_un));
+ }
+ else
+#ifdef MAILUTILS_IPV6
+ {
+ struct addrinfo hints;
+ struct addrinfo *res, *ap;
+ char portbuf[64];
+ struct mu_sockaddr *tail = NULL;
+
+ memset (&hints, 0, sizeof (hints));
+ hints.ai_family = mh->family;
+ hints.ai_socktype = mh->socktype;
+ hints.ai_protocol = mh->protocol;
+
+ if (!node)
+ {
+ if (mh->flags & MU_AH_PASSIVE)
+ hints.ai_flags |= AI_PASSIVE;
+ else
+ return MU_ERR_NONAME;
+ }
+ if (!serv && mh->port)
+ {
+ snprintf (portbuf, sizeof portbuf, "%hu", mh->port);
+ serv = portbuf;
+ }
+
+ rc = getaddrinfo (node, serv, &hints, &res);
+
+ switch (rc)
+ {
+ case 0:
+ break;
+
+ case EAI_FAIL:
+ return MU_ERR_GETHOSTBYNAME;
+
+ case EAI_FAMILY:
+ return MU_ERR_FAMILY;
+
+ case EAI_NONAME:
+ return MU_ERR_NONAME;
+
+ case EAI_SERVICE:
+ return MU_ERR_SERVICE;
+
+ case EAI_SYSTEM:
+ mu_error (_("%s:%s: cannot parse address: %s"),
+ node, serv, mu_strerror (errno));
+ return errno;
+
+ case EAI_BADFLAGS:
+ return MU_ERR_BADFLAGS;
+
+ case EAI_SOCKTYPE:
+ return MU_ERR_SOCKTYPE;
+
+ case EAI_MEMORY:
+ return ENOMEM;
+
+ default:
+ mu_error ("%s:%s: %s", node, serv, gai_strerror (rc));
+ return MU_ERR_FAILURE;
+ }
+
+ *retval = NULL;
+ for (ap = res; ap; ap = ap->ai_next)
+ if (mh->family == AF_UNSPEC || ap->ai_addr->sa_family == mh->family)
+ {
+ struct mu_sockaddr *sa;
+
+ if (match_sa (*retval, ap->ai_addr, ap->ai_addrlen))
+ continue;
+ rc = mu_sockaddr_create (&sa, ap->ai_addr, ap->ai_addrlen);
+ if (rc)
+ {
+ mu_sockaddr_free_list (*retval);
+ freeaddrinfo (res);
+ return rc;
+ }
+ if (tail)
+ mu_sockaddr_insert (tail, sa, 0);
+ else
+ *retval = sa;
+ tail = sa;
+ }
+ freeaddrinfo (res);
+ }
+#else
+ if (mh->family == AF_INET)
+ {
+ short port;
+ struct hostent *hp;
+ struct mu_sockaddr *tail = NULL;
+ char **p;
+
+ if (serv)
+ {
+ char *end;
+ unsigned long n = strtoul (serv, &end, 10);
+
+ if (*end)
+ {
+ struct servent *sp;
+ const char *proto;
+
+ if (mh->protocol)
+ {
+ struct protoent *pp = getprotobynumber (mh->protocol);
+ if (!pp)
+ return EINVAL;
+ proto = pp->p_name;
+ }
+ else
+ proto = NULL;
+
+ sp = getservbyname (serv, proto);
+ if (!sp)
+ return MU_ERR_SERVICE;
+ port = sp->s_port;
+ }
+ else if (n == 0 || (port = n) != n)
+ return MU_ERR_PARSE; /* FIXME: need MU_ERR_RANGE? */
+ }
+ else if (mh->port)
+ port = htons (mh->port);
+ else
+ return MU_ERR_NONAME;
+
+ if (!node)
+ {
+ struct sockaddr_in s_in;
+
+ if (!(mh->flags & MU_AH_PASSIVE))
+ return MU_ERR_NONAME;
+
+ s_in.sin_family = AF_INET;
+ s_in.sin_addr.s_addr = INADDR_ANY;
+ s_in.sin_port = port;
+ return mu_sockaddr_create (retval, (struct sockaddr*)&s_in,
+ sizeof (s_in));
+ }
+
+ hp = gethostbyname (node);
+ if (!hp)
+ return MU_ERR_GETHOSTBYNAME;
+
+ if (hp->h_addrtype != AF_INET || hp->h_length != 4)
+ return MU_ERR_FAMILY;
+
+ for (p = hp->h_addr_list; *p; p++)
+ {
+ struct mu_sockaddr *sa;
+ struct sockaddr_in s_in;
+
+ s_in.sin_family = AF_INET;
+ memcpy(&s_in.sin_addr, *p, 4);
+ s_in.sin_port = port;
+
+ rc = mu_sockaddr_create (&sa, (struct sockaddr*)&s_in,
+ sizeof (s_in));
+ if (rc)
+ {
+ mu_sockaddr_free_list (*retval);
+ return rc;
+ }
+ if (tail)
+ mu_sockaddr_insert (tail, sa, 0);
+ else
+ *retval = sa;
+ tail = sa;
+ }
+ }
+ else
+ return MU_ERR_FAMILY;
+#endif
+ return 0;
+}

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