Format error messages properly
Make use of strerror(errno) and format all errors equally: function ['parameters']: error message
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@ -1,5 +1,6 @@
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/* See LICENSE file for copyright and license details. */
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#if defined(__linux__)
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#include <errno.h>
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#include <ifaddrs.h>
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#include <netdb.h>
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#include <stdio.h>
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@ -15,7 +16,7 @@ ipv4(const char *iface)
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char host[NI_MAXHOST];
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if (getifaddrs(&ifaddr) == -1) {
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fprintf(stderr, "Failed to get IPv4 address for interface %s", iface);
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fprintf(stderr, "getifaddrs: %s\n", strerror(errno));
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return NULL;
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}
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@ -26,7 +27,7 @@ ipv4(const char *iface)
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s = getnameinfo(ifa->ifa_addr, sizeof(struct sockaddr_in), host, NI_MAXHOST, NULL, 0, NI_NUMERICHOST);
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if ((strcmp(ifa->ifa_name, iface) == 0) && (ifa->ifa_addr->sa_family == AF_INET)) {
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if (s != 0) {
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fprintf(stderr, "Failed to get IPv4 address for interface %s", iface);
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fprintf(stderr, "getnameinfo: %s\n", gai_strerror(s));
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return NULL;
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}
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return bprintf("%s", host);
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@ -46,7 +47,7 @@ ipv6(const char *iface)
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char host[NI_MAXHOST];
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if (getifaddrs(&ifaddr) == -1) {
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fprintf(stderr, "Failed to get IPv6 address for interface %s", iface);
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fprintf(stderr, "getifaddrs: %s\n", strerror(errno));
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return NULL;
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}
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@ -57,7 +58,7 @@ ipv6(const char *iface)
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s = getnameinfo(ifa->ifa_addr, sizeof(struct sockaddr_in6), host, NI_MAXHOST, NULL, 0, NI_NUMERICHOST);
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if ((strcmp(ifa->ifa_name, iface) == 0) && (ifa->ifa_addr->sa_family == AF_INET6)) {
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if (s != 0) {
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fprintf(stderr, "Failed to get IPv6 address for interface %s", iface);
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fprintf(stderr, "getnameinfo: %s\n", gai_strerror(s));
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return NULL;
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}
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return bprintf("%s", host);
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