From ea75e752f930df7b740a773294b997f46927c716 Mon Sep 17 00:00:00 2001 From: Rob Landley Date: Mon, 3 Aug 2015 14:34:01 -0500 Subject: Factor out xconnect(), plus some other small cleanups to telnet.c. --- lib/net.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) (limited to 'lib/net.c') diff --git a/lib/net.c b/lib/net.c index 5d3ea4a8..fc97a262 100644 --- a/lib/net.c +++ b/lib/net.c @@ -12,3 +12,30 @@ void xsetsockopt(int fd, int level, int opt, void *val, socklen_t len) { if (-1 == setsockopt(fd, level, opt, val, len)) perror_exit("setsockopt"); } + +int xconnect(char *host, int port, int family, int socktype, int protocol, + int flags) +{ + char buf[32]; + struct addrinfo info, *ai; + int fd; + + memset(&info, 0, sizeof(struct addrinfo)); + info.ai_family = family; + info.ai_socktype = socktype; + info.ai_protocol = protocol; + info.ai_flags = flags; + + sprintf(buf, "%d", port); + fd = getaddrinfo(host, port ? buf : 0, &info, &ai); + + if (fd || !ai) + error_exit("Connect '%s:%d': %s", host, port, + fd ? gai_strerror(fd) : "not found"); + + fd = xsocket(ai->ai_family, ai->ai_socktype, ai->ai_protocol); + if (connect(fd, ai->ai_addr, ai->ai_addrlen)) perror_exit("connect"); + freeaddrinfo(ai); + + return fd; +} -- cgit v1.2.3