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lksctp-tools/SOURCES/sctp_darn-replace-use-of-deprecated-gethostbyname-wi.patch
CentOS Sources 3248be0776 import lksctp-tools-1.0.19-1.el9
2022-01-11 18:44:16 +00:00

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From e44ac51d213c193c894747fef6d61f521d0a7804 Mon Sep 17 00:00:00 2001
From: Xin Long <lucien.xin@gmail.com>
Date: Wed, 4 Aug 2021 07:29:16 -0400
Subject: [PATCH 4/4] sctp_darn: replace use of deprecated gethostbyname with
getaddrinfo
This patch is to replace use of deprecated gethostbyname with
getaddrinfo in the file src/apps/sctp_darn.c.
Note that different from sctp_test, sctp_darn prefers v4 address
to v6 address when getting addrinfo from hostname. To keep the
compatibility, we don't change it.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
---
configure.ac | 2 +-
src/apps/sctp_darn.c | 246 +++++++++++++------------------------------
2 files changed, 72 insertions(+), 176 deletions(-)
diff --git a/configure.ac b/configure.ac
index 8345dab..28132bf 100644
--- a/configure.ac
+++ b/configure.ac
@@ -75,7 +75,7 @@ AC_FUNC_REALLOC
AC_FUNC_SELECT_ARGTYPES
AC_FUNC_SETVBUF_REVERSED
AC_FUNC_VPRINTF
-AC_CHECK_FUNCS([bzero getaddrinfo gethostbyname gettimeofday memmove memset select socket \
+AC_CHECK_FUNCS([bzero getaddrinfo gettimeofday memmove memset select socket \
strchr strerror strtol strtoul])
# Support for stream reset even, added on v4.11, 35ea82d611da
diff --git a/src/apps/sctp_darn.c b/src/apps/sctp_darn.c
index bcfb822..133c1c6 100644
--- a/src/apps/sctp_darn.c
+++ b/src/apps/sctp_darn.c
@@ -126,7 +126,6 @@ int if_index = 0;
sockaddr_storage_t remote_addr;
sa_family_t ra_family; /* What family is remote_addr? */
int ra_len = 0; /* How long is remote_addr? */
-void *ra_raw; /* This is the addr part of remote_addr. */
int new_connection = 1;
enum inter_cmd_num {
@@ -491,49 +490,29 @@ int
build_endpoint(char *argv0, int portnum)
{
int retval;
- struct hostent *hst;
+ struct addrinfo hints, *rp;
sockaddr_storage_t local_addr;
- sa_family_t la_family; /* What family is local_addr? */
- int la_len; /* How long is local_addr? */
- void *la_raw; /* This is the addr part of local_addr. */
int error;
struct sctp_event_subscribe subscribe;
/* Get the transport address for the local host name. */
- hst = gethostbyname(local_host);
- if (hst == NULL) {
- hst = gethostbyname2(local_host, AF_INET6);
- }
-
- if (hst == NULL || hst->h_length < 1) {
- fprintf(stderr, "%s: bad hostname: %s\n", argv0, local_host);
- exit(1);
+ memset(&hints, 0, sizeof(struct addrinfo));
+ hints.ai_family = AF_INET;
+ hints.ai_protocol = IPPROTO_SCTP;
+ if (getaddrinfo(local_host, NULL, &hints, &rp) != 0) {
+ hints.ai_family = AF_INET6;
+ if (getaddrinfo(local_host, NULL, &hints, &rp) != 0) {
+ fprintf(stderr, "%s: bad hostname: %s\n", argv0, local_host);
+ exit(1);
+ }
}
-
- la_family = hst->h_addrtype;
- switch (la_family) {
- case AF_INET:
- la_len = sizeof(local_addr.v4);
- la_raw = &local_addr.v4.sin_addr;
- local_addr.v4.sin_port = htons(portnum);
- local_addr.v4.sin_family = AF_INET;
- break;
- case AF_INET6:
- la_len = sizeof(local_addr.v6);
- la_raw = &local_addr.v6.sin6_addr;
- local_addr.v6.sin6_port = htons(portnum);
- local_addr.v6.sin6_family = AF_INET6;
+ memcpy(&local_addr, rp->ai_addr, rp->ai_addrlen);
+ local_addr.v4.sin_port = htons(portnum); /* equal to v6.sin6_port */
+ if (rp->ai_family == AF_INET6)
local_addr.v6.sin6_scope_id = if_index;
- break;
- default:
- fprintf(stderr, "Invalid address type.\n");
- exit(1);
- break;
- }
- memcpy(la_raw, hst->h_addr_list[0], hst->h_length);
/* Create the local endpoint. */
- retval = socket(la_family, socket_type, IPPROTO_SCTP);
+ retval = socket(rp->ai_family, socket_type, IPPROTO_SCTP);
if (retval < 0) {
fprintf(stderr, "%s: failed to create socket: %s.\n",
argv0, strerror(errno));
@@ -553,7 +532,7 @@ build_endpoint(char *argv0, int portnum)
}
/* Bind this socket to the test port. */
- error = bind(retval, &local_addr.sa, la_len);
+ error = bind(retval, &local_addr.sa, rp->ai_addrlen);
if (error != 0) {
fprintf(stderr, "%s: can not bind to %s:%d: %s.\n",
argv0, local_host, portnum,
@@ -778,7 +757,7 @@ command_send(char *argv0, int *skp)
struct iovec iov;
int done = 0;
char message[REALLY_BIG];
- struct hostent *hst;
+ struct addrinfo hints, *rp;
int c;
struct sockaddr *addrs;
int msglen;
@@ -787,38 +766,21 @@ command_send(char *argv0, int *skp)
/* Set up the destination. */
if (remote_host != NULL) {
- hst = gethostbyname(remote_host);
- if (hst == NULL) {
- hst = gethostbyname2(remote_host, AF_INET6);
- }
-
- if (hst == NULL || hst->h_length < 1) {
- fprintf(stderr, "%s: bad hostname: %s\n",
- argv0, remote_host);
- exit(1);
+ memset(&hints, 0, sizeof(struct addrinfo));
+ hints.ai_family = AF_INET;
+ hints.ai_protocol = IPPROTO_SCTP;
+ if (getaddrinfo(remote_host, NULL, &hints, &rp) != 0) {
+ hints.ai_family = AF_INET6;
+ if (getaddrinfo(remote_host, NULL, &hints, &rp) != 0) {
+ fprintf(stderr, "%s: bad hostname: %s\n", argv0, remote_host);
+ exit(1);
+ }
}
-
- ra_family = hst->h_addrtype;
- switch (ra_family) {
- case AF_INET:
- ra_len = sizeof(remote_addr.v4);
- ra_raw = &remote_addr.v4.sin_addr;
- remote_addr.v4.sin_port = htons(remote_port);
- remote_addr.v4.sin_family = AF_INET;
- break;
- case AF_INET6:
- ra_len = sizeof(remote_addr.v6);
- ra_raw = &remote_addr.v6.sin6_addr;
- remote_addr.v6.sin6_port = htons(remote_port);
- remote_addr.v6.sin6_family = AF_INET6;
+ memcpy(&remote_addr, rp->ai_addr, rp->ai_addrlen);
+ remote_addr.v4.sin_port = htons(remote_port); /* equal to v6.sin6_port */
+ if (rp->ai_family == AF_INET6)
remote_addr.v6.sin6_scope_id = if_index;
- break;
- default:
- fprintf(stderr, "Invalid address type.\n");
- exit(1);
- break;
- }
- memcpy(ra_raw, hst->h_addr_list[0], hst->h_length);
+ ra_len = rp->ai_addrlen;
}
/* Initialize the global value for interactive mode functions. */
@@ -1041,7 +1003,7 @@ command_poll(char *argv0)
fd_set *xbitsp = NULL;
struct msghdr outmsg;
- struct hostent *hst;
+ struct addrinfo hints, *rp;
int msglen;
int temp_fd, temp_set;
@@ -1050,38 +1012,20 @@ command_poll(char *argv0)
/* If a remote host is specified, initialize the destination. */
if (remote_host) {
/* Set up the destination. */
- hst = gethostbyname(remote_host);
- if (hst == NULL) {
- hst = gethostbyname2(remote_host, AF_INET6);
- }
-
- if (hst == NULL || hst->h_length < 1) {
- fprintf(stderr, "%s: bad hostname: %s\n",
- argv0, remote_host);
- exit(1);
+ memset(&hints, 0, sizeof(struct addrinfo));
+ hints.ai_family = AF_INET;
+ hints.ai_protocol = IPPROTO_SCTP;
+ if (getaddrinfo(remote_host, NULL, &hints, &rp) != 0) {
+ hints.ai_family = AF_INET6;
+ if (getaddrinfo(remote_host, NULL, &hints, &rp) != 0) {
+ fprintf(stderr, "%s: bad hostname: %s\n", argv0, remote_host);
+ exit(1);
+ }
}
-
- ra_family = hst->h_addrtype;
- switch (ra_family) {
- case AF_INET:
- ra_len = sizeof(remote_addr.v4);
- ra_raw = &remote_addr.v4.sin_addr;
- remote_addr.v4.sin_port = htons(remote_port);
- remote_addr.v4.sin_family = AF_INET;
- break;
- case AF_INET6:
- ra_len = sizeof(remote_addr.v6);
- ra_raw = &remote_addr.v6.sin6_addr;
- remote_addr.v6.sin6_port = htons(remote_port);
- remote_addr.v6.sin6_family = AF_INET6;
+ memcpy(&remote_addr, rp->ai_addr, rp->ai_addrlen);
+ remote_addr.v4.sin_port = htons(remote_port); /* equal to v6.sin6_port */
+ if (rp->ai_family == AF_INET6)
remote_addr.v6.sin6_scope_id = if_index;
- break;
- default:
- fprintf(stderr, "Invalid address type.\n");
- exit(1);
- break;
- }
- memcpy(ra_raw, hst->h_addr_list[0], hst->h_length);
/* Initialize the message struct we use to pass messages to
* the remote socket.
@@ -1091,7 +1035,7 @@ command_poll(char *argv0)
outmsg.msg_control = NULL;
outmsg.msg_controllen = 0;
outmsg.msg_name = &remote_addr;
- outmsg.msg_namelen = ra_len;
+ outmsg.msg_namelen = rp->ai_addrlen;
outmsg.msg_flags = 0;
}
@@ -1406,14 +1350,11 @@ struct sockaddr *
append_addr(const char *parm, struct sockaddr *addrs, int *ret_count)
{
struct sockaddr *new_addrs = NULL;
+ struct addrinfo hints, *res, *rp;
void *aptr;
struct sockaddr *sa_addr;
struct sockaddr_in *b4ap;
struct sockaddr_in6 *b6ap;
- struct hostent *hst4 = NULL;
- struct hostent *hst6 = NULL;
- int i4 = 0;
- int i6 = 0;
int j;
int orig_count = *ret_count;
int count = orig_count;
@@ -1421,28 +1362,17 @@ append_addr(const char *parm, struct sockaddr *addrs, int *ret_count)
if (!parm)
return NULL;
- /* Get the entries for this host. */
- hst4 = gethostbyname(parm);
- hst6 = gethostbyname2(parm, AF_INET6);
- if ((NULL == hst4 || hst4->h_length < 1)
- && (NULL == hst6 || hst6->h_length < 1)) {
+ memset(&hints, 0, sizeof(struct addrinfo));
+ hints.ai_family = AF_UNSPEC;
+ hints.ai_protocol = IPPROTO_SCTP;
+ if (getaddrinfo(parm, NULL, &hints, &res) != 0) {
fprintf(stderr, "bad hostname: %s\n", parm);
goto finally;
}
-
- /* Figure out the number of addresses. */
- if (NULL != hst4) {
- for (i4 = 0; NULL != hst4->h_addr_list[i4]; ++i4) {
- count++;
- }
- }
- if (NULL != hst6) {
- for (i6 = 0; NULL != hst6->h_addr_list[i6]; ++i6) {
- count++;
- }
- }
+ for (rp = res; rp != NULL; rp = rp->ai_next)
+ count++;
/* Expand memory for the new addresses. Assume all the addresses
* are v6 addresses.
@@ -1473,31 +1403,14 @@ append_addr(const char *parm, struct sockaddr *addrs, int *ret_count)
}
/* Put the new addresses away. */
- if (NULL != hst4) {
- for (j = 0; j < i4; ++j) {
- b4ap = (struct sockaddr_in *)aptr;
- memset(b4ap, 0x00, sizeof(*b4ap));
- b4ap->sin_family = AF_INET;
- b4ap->sin_port = htons(local_port);
- bcopy(hst4->h_addr_list[j], &b4ap->sin_addr,
- hst4->h_length);
-
- aptr += sizeof(struct sockaddr_in);
- } /* for (loop through the new v4 addresses) */
- }
-
- if (NULL != hst6) {
- for (j = 0; j < i6; ++j) {
- b6ap = (struct sockaddr_in6 *)aptr;
- memset(b6ap, 0x00, sizeof(*b6ap));
- b6ap->sin6_family = AF_INET6;
- b6ap->sin6_port = htons(local_port);
+ for (rp = res; rp != NULL; rp = rp->ai_next) {
+ b4ap = (struct sockaddr_in *)aptr;
+ b6ap = (struct sockaddr_in6 *)aptr;
+ bcopy(rp->ai_addr, aptr, rp->ai_addrlen);
+ b4ap->sin_port = htons(local_port); /* equal to b6ap.v6.sin6_port */
+ if (rp->ai_family == AF_INET6)
b6ap->sin6_scope_id = if_index;
- bcopy(hst6->h_addr_list[j], &b6ap->sin6_addr,
- hst6->h_length);
-
- aptr += sizeof(struct sockaddr_in6);
- } /* for (loop through the new v6 addresses) */
+ aptr += rp->ai_addrlen;
}
finally:
@@ -2123,7 +2036,7 @@ shutdown_func(char *argv0, int *skp, int shutdown_type)
struct cmsghdr *cmsg;
int error=0, bytes_sent;
struct sctp_sndrcvinfo *sinfo;
- struct hostent *hst;
+ struct addrinfo hints, *rp;
char *sd_type;
int sk = *skp;
@@ -2142,37 +2055,20 @@ shutdown_func(char *argv0, int *skp, int shutdown_type)
if (socket_type == SOCK_SEQPACKET) {
/* Set up the destination. */
if (remote_host) {
- hst = gethostbyname(remote_host);
- if (hst == NULL) {
- hst = gethostbyname2(remote_host, AF_INET6);
- }
-
- if (hst == NULL || hst->h_length < 1) {
- fprintf(stderr, "%s: bad hostname: %s\n",
- argv0, remote_host);
- exit(1);
- }
-
- ra_family = hst->h_addrtype;
- switch (ra_family) {
- case AF_INET:
- ra_len = sizeof(remote_addr.v4);
- ra_raw = &remote_addr.v4.sin_addr;
- remote_addr.v4.sin_port = htons(remote_port);
- remote_addr.v4.sin_family = AF_INET;
- break;
- case AF_INET6:
- ra_len = sizeof(remote_addr.v6);
- ra_raw = &remote_addr.v6.sin6_addr;
- remote_addr.v6.sin6_port = htons(remote_port);
- remote_addr.v6.sin6_family = AF_INET6;
- break;
- default:
- fprintf(stderr, "Invalid address type.\n");
- exit(1);
- break;
+ memset(&hints, 0, sizeof(struct addrinfo));
+ hints.ai_family = AF_INET;
+ hints.ai_protocol = IPPROTO_SCTP;
+ if (getaddrinfo(remote_host, NULL, &hints, &rp) != 0) {
+ hints.ai_family = AF_INET6;
+ if (getaddrinfo(remote_host, NULL, &hints, &rp) != 0) {
+ fprintf(stderr, "%s: bad hostname: %s\n",
+ argv0, remote_host);
+ exit(1);
+ }
}
- memcpy(ra_raw, hst->h_addr_list[0], hst->h_length);
+ memcpy(&remote_addr, rp->ai_addr, rp->ai_addrlen);
+ remote_addr.v4.sin_port = htons(remote_port); /* equal to v6.sin6_port */
+ ra_len = rp->ai_addrlen;
}
/* Initialize the message struct we use to pass messages to
--
2.27.0
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