diff options
| -rw-r--r-- | ipv6-connect.c | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/ipv6-connect.c b/ipv6-connect.c new file mode 100644 index 00000000..2da1edb7 --- /dev/null +++ b/ipv6-connect.c @@ -0,0 +1,107 @@ +/* +%%% copyright-cmetz-97 +This software is Copyright 1997-1998 by Craig Metz, All Rights Reserved. +The Inner Net License Version 2 applies to this software. +You should have received a copy of the license with this software. If +you didn't get a copy, you may request one from <license@inner.net>. + +*/ + + +#include "config.h" +#ifdef INET6_ENABLE +#include <sys/types.h> +#include <stdio.h> +#ifdef HAVE_NET_SOCKET_H +#include <net/socket.h> +#else +#include <sys/socket.h> +#endif +#include <netinet/in.h> +#include <errno.h> +#include <netdb.h> +#include <signal.h> + +/* This patch, supplying SA_LEN if it's undefined, is from Red Hat */ +#ifndef SA_LEN +#define SA_LEN(sa) sa_len(sa) + +static size_t sa_len(struct sockaddr *sa) +{ + switch(sa->sa_family) { +#if defined(AF_INET) + case AF_INET: + return sizeof(struct sockaddr_in); +#endif +#if defined(AF_INET6) && defined(INET6_ENABLE) + case AF_INET6: + return sizeof(struct sockaddr_in6); +#endif + default: + return sizeof(struct sockaddr); + } +} +#endif /* SA_LEN */ + +static int default_trying_callback(struct sockaddr *sa) +{ + char hbuf[NI_MAXHOST], sbuf[NI_MAXSERV]; + + if (getnameinfo(sa, SA_LEN(sa), hbuf, sizeof(hbuf), sbuf, sizeof(sbuf), NI_NUMERICHOST | NI_NUMERICSERV)) { + fprintf(stderr, "inner_getstream: getnameinfo failed\n"); + return -1; + }; + + fprintf(stderr, "Trying %s.%s...\n", hbuf, sbuf); + return 0; +}; + +static int default_error_callback(char *myname, char *message) +{ + fprintf(stderr, "%s: %s\n", myname, message); + return 0; +}; + +int inner_connect(struct addrinfo *ai, void *request, int requestlen, int (*trying_callback)(struct sockaddr *sa), int (*error_callback)(char *myname, char *message), char *myname, struct addrinfo **pai) +{ + int fd; + char errorbuf[128]; + + if (!trying_callback) + trying_callback = default_trying_callback; + + if (!error_callback) + error_callback = default_error_callback; + + for (; ai; ai = ai->ai_next) { + if (trying_callback(ai->ai_addr)) + continue; + + if ((fd = socket(ai->ai_family, ai->ai_socktype, ai->ai_protocol)) < 0) { + snprintf(errorbuf, sizeof(errorbuf), "socket: %s(%d)", strerror(errno), errno); + error_callback(myname, errorbuf); + continue; + }; + + if (connect(fd, ai->ai_addr, ai->ai_addrlen) < 0) { + snprintf(errorbuf, sizeof(errorbuf), "connect: %s(%d)", strerror(errno), errno); + error_callback(myname, errorbuf); + close(fd); /* just after a connect; no reads or writes yet */ + continue; + } + break; + }; + + if (ai) { + if (pai) + *pai = ai; + } else { + snprintf(errorbuf, sizeof(errorbuf), "no connections result"); + error_callback(myname, errorbuf); + fd = -1; + }; + + return fd; +}; + +#endif /* INET6_ENABLE */ |