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authorvenaas <venaas>2007-01-02 13:46:34 +0000
committervenaas <venaas@e88ac4ed-0b26-0410-9574-a7f39faa03bf>2007-01-02 13:46:34 +0000
commitb828d54f194e6f88c17125fcf5cf64572be45caf (patch)
treeef64f6a0537d8ca7742ad3c4b2344b035136c5fb /util.c
parente08943b4472869de71d8a528a52e277dd1e5af13 (diff)
git-svn-id: https://svn.testnett.uninett.no/radsecproxy/trunk@2 e88ac4ed-0b26-0410-9574-a7f39faa03bf
Diffstat (limited to 'util.c')
-rw-r--r--util.c125
1 files changed, 125 insertions, 0 deletions
diff --git a/util.c b/util.c
new file mode 100644
index 0000000..4a2f1ad
--- /dev/null
+++ b/util.c
@@ -0,0 +1,125 @@
+/*
+ * Copyright (C) 2006 Stig Venaas <venaas@uninett.no>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ */
+
+#include <netdb.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+#include <stdarg.h>
+
+void errx(char *format, ...) {
+ extern int errno;
+
+ va_list ap;
+ va_start(ap, format);
+ vfprintf(stderr, format, ap);
+ va_end(ap);
+ if (errno) {
+ fprintf(stderr, ": ");
+ perror(NULL);
+ fprintf(stderr, "errno=%d\n", errno);
+ } else
+ fprintf(stderr, "\n");
+ exit(1);
+}
+
+void err(char *format, ...) {
+ extern int errno;
+
+ va_list ap;
+ va_start(ap, format);
+ vfprintf(stderr, format, ap);
+ va_end(ap);
+ if (errno) {
+ fprintf(stderr, ": ");
+ perror(NULL);
+ fprintf(stderr, "errno=%d\n", errno);
+ } else
+ fprintf(stderr, "\n");
+}
+
+char *addr2string(struct sockaddr *addr, socklen_t len) {
+ struct sockaddr_in6 *sa6;
+ struct sockaddr_in sa4;
+ static char addr_buf[2][INET6_ADDRSTRLEN];
+ static int i = 0;
+ i = !i;
+ if (addr->sa_family == AF_INET6) {
+ sa6 = (struct sockaddr_in6 *)addr;
+ if (IN6_IS_ADDR_V4MAPPED(&sa6->sin6_addr)) {
+ memset(&sa4, 0, sizeof(sa4));
+ sa4.sin_family = AF_INET;
+ sa4.sin_port = sa6->sin6_port;
+ memcpy(&sa4.sin_addr, &sa6->sin6_addr.s6_addr[12], 4);
+ addr = (struct sockaddr *)&sa4;
+ }
+ }
+ if (getnameinfo(addr, len, addr_buf[i], sizeof(addr_buf[i]),
+ NULL, 0, NI_NUMERICHOST)) {
+ err("getnameinfo");
+ return NULL;
+ }
+ return addr_buf[i];
+}
+
+int bindport(int type, char *port) {
+ struct addrinfo hints, *res0, *res;
+ int s;
+
+ memset(&hints, 0, sizeof(hints));
+ hints.ai_socktype = type;
+ hints.ai_family = AF_UNSPEC;
+ hints.ai_flags = AI_PASSIVE;
+
+ if (getaddrinfo(NULL, port, &hints, &res0) != 0) {
+ err("bindport: can't resolve port %s", port);
+ return -1;
+ }
+ for (res = res0; res; res = res->ai_next) {
+ s = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
+ if (s >= 0) {
+ if (bind(s, res->ai_addr, res->ai_addrlen) == 0)
+ break;
+ close(s);
+ s = -1;
+ }
+ }
+ freeaddrinfo(res0);
+ return s;
+}
+
+int connectport(int type, char *host, char *port) {
+ struct addrinfo hints, *res0, *res;
+ int s;
+
+ memset(&hints, 0, sizeof(hints));
+ hints.ai_socktype = type;
+ hints.ai_family = AF_UNSPEC;
+
+ if (getaddrinfo(host, port, &hints, &res0) != 0) {
+ err("connectport: can't resolve host %s port %s", host, port);
+ return -1;
+ }
+
+ for (res = res0; res; res = res->ai_next) {
+ s = socket(res->ai_family, res->ai_socktype, res->ai_protocol);
+ if (s < 0) {
+ err("connectport: socket failed");
+ continue;
+ }
+ if (connect(s, res->ai_addr, res->ai_addrlen) == 0)
+ break;
+ err("connectport: connect failed");
+ close(s);
+ s = -1;
+ }
+ freeaddrinfo(res0);
+ return s;
+}