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From 3cb07d9c440d7bf0c4f8877a68a8d7467b97a238 Mon Sep 17 00:00:00 2001
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From: David King <amigadave@amigadave.com>
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Date: Mon, 6 Jun 2022 17:30:40 +0100
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Subject: [PATCH] Avoid some deprecated networking functions
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rpminspect trips up on some old networking functions in libgtop, which
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are mentioned as deprecated in the Linux man pages.
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inet_ntoa() only works on IPv4 addresses, whereas the newer inet_ntop()
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works on both IPv4 and IPv6 addresses, so use inet_ntop() instead.
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Similarly, use getaddrinfo() rather than gethostbyname(), and avoid
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inet_addr() entirely.
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https://bugzilla.redhat.com/show_bug.cgi?id=2050712
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---
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examples/netload.c | 10 +++-------
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src/daemon/gnuserv.c | 20 ++++++++++++++------
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sysdeps/common/gnuslib.c | 16 ++++++++++------
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3 files changed, 27 insertions(+), 19 deletions(-)
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diff --git a/examples/netload.c b/examples/netload.c
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index 979b245d..520b5040 100644
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--- a/examples/netload.c
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+++ b/examples/netload.c
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@@ -66,7 +66,7 @@ main (int argc, char *argv [])
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glibtop_netload netload;
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unsigned method, count, port;
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struct in_addr addr, subnet;
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- char *address_string, *subnet_string;
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+ char address_string[INET_ADDRSTRLEN], subnet_string[INET_ADDRSTRLEN];
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char address6_string[INET6_ADDRSTRLEN], prefix6_string[INET6_ADDRSTRLEN];
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char *hwaddress_string;
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char buffer [BUFSIZ];
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@@ -105,9 +105,8 @@ main (int argc, char *argv [])
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addr.s_addr = netload.address;
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subnet.s_addr = netload.subnet;
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- address_string = g_strdup (inet_ntoa (addr));
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- subnet_string = g_strdup (inet_ntoa (subnet));
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-
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+ inet_ntop (AF_INET, &addr, address_string, INET_ADDRSTRLEN);
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+ inet_ntop (AF_INET, &subnet, subnet_string, INET_ADDRSTRLEN);
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inet_ntop (AF_INET6, netload.address6, address6_string, INET6_ADDRSTRLEN);
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inet_ntop (AF_INET6, netload.prefix6, prefix6_string, INET6_ADDRSTRLEN);
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@@ -153,9 +152,6 @@ main (int argc, char *argv [])
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hwaddress_string);
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- g_free (address_string);
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- g_free (subnet_string);
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-
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glibtop_close ();
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exit (0);
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diff --git a/src/daemon/gnuserv.c b/src/daemon/gnuserv.c
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index 78ebb643..26e9dd92 100644
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--- a/src/daemon/gnuserv.c
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+++ b/src/daemon/gnuserv.c
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@@ -392,6 +392,7 @@ handle_internet_request (int ls)
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int s;
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size_t addrlen = sizeof (struct sockaddr_in);
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struct sockaddr_in peer; /* for peer socket address */
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+ char addrstr[addrlen];
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pid_t pid;
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memset ((char *) &peer, 0, sizeof (struct sockaddr_in));
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@@ -401,21 +402,24 @@ handle_internet_request (int ls)
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exit (1);
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}
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+ /* TODO: Check errno. */
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+ inet_ntop (AF_INET, &peer, addrstr, addrlen);
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+
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if (verbose_output)
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syslog_message (LOG_INFO, "Connection was made from %s port %u.",
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- inet_ntoa (peer.sin_addr), ntohs (peer.sin_port));
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+ addrstr, ntohs (peer.sin_port));
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/* Check that access is allowed - if not return crud to the client */
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if (!permitted (peer.sin_addr.s_addr, s)) {
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close (s);
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syslog_message (LOG_CRIT, "Refused connection from %s.",
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- inet_ntoa (peer.sin_addr));
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+ addrstr);
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return;
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} /* if */
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if (verbose_output)
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syslog_message (LOG_INFO, "Accepted connection from %s port %u.",
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- inet_ntoa (peer.sin_addr), ntohs (peer.sin_port));
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+ addrstr, ntohs (peer.sin_port));
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pid = fork ();
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@@ -436,7 +440,7 @@ handle_internet_request (int ls)
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if (verbose_output)
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syslog_message (LOG_INFO, "Closed connection to %s port %u.",
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- inet_ntoa (peer.sin_addr), ntohs (peer.sin_port));
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+ addrstr, ntohs (peer.sin_port));
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_exit (0);
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} /* handle_internet_request */
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@@ -560,6 +564,7 @@ main (int argc, char **argv)
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if (invoked_from_inetd) {
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size_t addrlen = sizeof (struct sockaddr_in);
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struct sockaddr_in peer;
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+ char addrstr[addrlen];
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memset ((char *) &peer, 0, sizeof (struct sockaddr_in));
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@@ -568,15 +573,18 @@ main (int argc, char **argv)
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exit (1);
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}
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+ /* TODO: Check errno. */
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+ inet_ntop (AF_INET, &peer, addrstr, addrlen);
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+
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if (verbose_output)
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syslog_message (LOG_INFO, "Connection was made from %s port %u.",
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- inet_ntoa (peer.sin_addr), ntohs (peer.sin_port));
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+ addrstr, ntohs (peer.sin_port));
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/* Check that access is allowed - if not return crud to the client */
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if (!permitted (peer.sin_addr.s_addr, 0)) {
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close (0);
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syslog_message (LOG_CRIT, "Refused connection from %s.",
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- inet_ntoa (peer.sin_addr));
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+ addrstr);
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exit (1);
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}
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diff --git a/sysdeps/common/gnuslib.c b/sysdeps/common/gnuslib.c
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index 79295485..3f994f2c 100644
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--- a/sysdeps/common/gnuslib.c
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+++ b/sysdeps/common/gnuslib.c
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@@ -202,16 +202,20 @@ connect_to_unix_server (void)
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long
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glibtop_internet_addr (const char *host)
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{
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- struct hostent *hp; /* pointer to host info for remote host */
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+ /* specify IPv4 and TCP */
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+ struct addrinfo hints = { AF_INET, SOCK_STREAM, };
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+ struct addrinfo *result;/* pointer to host info for remote host */
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IN_ADDR numeric_addr; /* host address */
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- numeric_addr = inet_addr (host);
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- if (!NUMERIC_ADDR_ERROR)
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+ if (getaddrinfo (NULL, host, &hints, &result) == 0) {
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+ /* Take only the first address. */
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+ struct sockaddr_in *res = (struct sockaddr_in *)result->ai_addr;
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+ numeric_addr = res->sin_addr.s_addr;
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+ freeaddrinfo (result);
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return numeric_addr;
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- else if ((hp = gethostbyname (host)) != NULL)
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- return ((struct in_addr *) (hp->h_addr))->s_addr;
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+ }
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else {
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- glibtop_warn_io ("gethostbyname (%s)", host);
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+ glibtop_warn_io ("getaddrinfo (%s)", host);
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return -1;
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}
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--
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2.36.1
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