* [PATCH lksctp-tools 1/4] myftp: replace use of deprecated gethostbyname with getaddrinfo
2021-08-04 11:29 [PATCH lksctp-tools 0/4] lksctp-tools: replace use of deprecated gethostbyname with getaddrinfo Xin Long
@ 2021-08-04 11:29 ` Xin Long
2021-08-04 11:29 ` [PATCH lksctp-tools 2/4] sctp_xconnect: " Xin Long
` (4 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: Xin Long @ 2021-08-04 11:29 UTC (permalink / raw)
To: linux-sctp, Marcelo Ricardo Leitner
This patch is to replace use of deprecated gethostbyname with
getaddrinfo in the file src/apps/myftp.c.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
---
configure.ac | 2 +-
src/apps/myftp.c | 40 ++++++++++++++++++----------------------
2 files changed, 19 insertions(+), 23 deletions(-)
diff --git a/configure.ac b/configure.ac
index 4e2f7b4..8345dab 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 gethostbyname gettimeofday memmove memset select socket \
+AC_CHECK_FUNCS([bzero getaddrinfo gethostbyname gettimeofday memmove memset select socket \
strchr strerror strtol strtoul])
# Support for stream reset even, added on v4.11, 35ea82d611da
diff --git a/src/apps/myftp.c b/src/apps/myftp.c
index 64fa3f2..473fa03 100644
--- a/src/apps/myftp.c
+++ b/src/apps/myftp.c
@@ -64,11 +64,11 @@ typedef enum { COMMAND_NONE, COMMAND_RECV, COMMAND_SEND } command_t;
#define MAX_NUM_HOST 5
static char *local_host[MAX_NUM_HOST];
static int num_local_host = 0;
-static int local_port = 4444;
+static char *local_port = "4444";
static int buffer_size = BUFSIZE;
static char *remote_host = NULL;
-static int remote_port = 4444;
+static char *remote_port = "4444";
static command_t command = COMMAND_NONE;
static char *filename = NULL;
static int interactive = 0;
@@ -133,7 +133,7 @@ static int parse_arguments(int argc, char *argv[])
break;
case 2: /* local port */
case 'P':
- local_port = atoi(optarg);
+ local_port = optarg;
break;
case 3: /* remote host */
case 'h':
@@ -141,7 +141,7 @@ static int parse_arguments(int argc, char *argv[])
break;
case 4: /* remote port */
case 'p':
- remote_port = atoi(optarg);
+ remote_port = optarg;
break;
case 5:
case 'f':
@@ -236,6 +236,7 @@ emsg(char *prog,char *s)
static int build_endpoint(char *argv0)
{
+ struct addrinfo hints, *rp;
int retval,i;
/* Create the local endpoint. */
@@ -245,22 +246,19 @@ static int build_endpoint(char *argv0)
}
for ( i = 0;i < num_local_host;i++ ) {
- struct hostent *hst;
- struct sockaddr_in laddr;
-
- memset(&laddr, 0, sizeof(laddr));
/* Get the transport address for the local host name. */
fprintf(stderr,"Hostname %d is %s\n",i+1,local_host[i]);
- if ( (hst = gethostbyname(local_host[i])) == NULL ) {
+
+ memset(&hints, 0, sizeof(struct addrinfo));
+ hints.ai_family = AF_INET;
+ hints.ai_protocol = IPPROTO_SCTP;
+ if (getaddrinfo(local_host[i], local_port, &hints, &rp) != 0) {
fprintf(stderr, "%s: bad hostname: %s\n", argv0, local_host[i]);
exit(1);
}
- memcpy(&laddr.sin_addr, hst->h_addr_list[0],sizeof(laddr.sin_addr));
- laddr.sin_port = htons(local_port);
- laddr.sin_family = AF_INET;
/* Bind this socket to the test port. */
- if ( bind(retval, (struct sockaddr *)&laddr, sizeof(laddr)) ) {
+ if (bind(retval, rp->ai_addr, rp->ai_addrlen)) {
emsg(argv0,"bind");
exit(-1);
}
@@ -339,21 +337,19 @@ command_send(char *argv0, int sk)
{
struct msghdr outmsg;
struct iovec iov;
- struct hostent *hst;
- struct sockaddr_in remote_addr;
+ struct addrinfo hints, *rp;
int fd;
int msglen;
int ct;
/* Set up the destination. */
- hst = gethostbyname(remote_host);
- if (hst == NULL || hst->h_length < 1) {
+ memset(&hints, 0, sizeof(struct addrinfo));
+ hints.ai_family = AF_INET;
+ hints.ai_protocol = IPPROTO_SCTP;
+ if (getaddrinfo(remote_host, remote_port, &hints, &rp) != 0) {
fprintf(stderr, "%s: bad hostname: %s\n", argv0, remote_host);
exit(1);
}
- memcpy(&remote_addr.sin_addr, hst->h_addr_list[0], sizeof(remote_addr.sin_addr));
- remote_addr.sin_port = htons(remote_port);
- remote_addr.sin_family = AF_INET;
/* Initialize the message struct we use to pass messages to
* the remote socket.
@@ -364,8 +360,8 @@ command_send(char *argv0, int sk)
outmsg.msg_iovlen = 1;
outmsg.msg_control = NULL;
outmsg.msg_controllen = 0;
- outmsg.msg_name = &remote_addr;
- outmsg.msg_namelen = sizeof(remote_addr);
+ outmsg.msg_name = rp->ai_addr;
+ outmsg.msg_namelen = rp->ai_addrlen;
/* open the file */
if ( filename == NULL ) fd = 0;
--
2.27.0
^ permalink raw reply related [flat|nested] 7+ messages in thread* [PATCH lksctp-tools 2/4] sctp_xconnect: replace use of deprecated gethostbyname with getaddrinfo
2021-08-04 11:29 [PATCH lksctp-tools 0/4] lksctp-tools: replace use of deprecated gethostbyname with getaddrinfo Xin Long
2021-08-04 11:29 ` [PATCH lksctp-tools 1/4] myftp: " Xin Long
@ 2021-08-04 11:29 ` Xin Long
2021-08-04 11:29 ` [PATCH lksctp-tools 3/4] sctp_test: " Xin Long
` (3 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: Xin Long @ 2021-08-04 11:29 UTC (permalink / raw)
To: linux-sctp, Marcelo Ricardo Leitner
This patch is to replace use of deprecated gethostbyname with
getaddrinfo in the file src/apps/sctp_xconnect.c.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
---
src/apps/sctp_xconnect.c | 72 +++++++++++++++++-----------------------
1 file changed, 31 insertions(+), 41 deletions(-)
diff --git a/src/apps/sctp_xconnect.c b/src/apps/sctp_xconnect.c
index 6759c0e..5cd1049 100644
--- a/src/apps/sctp_xconnect.c
+++ b/src/apps/sctp_xconnect.c
@@ -63,13 +63,13 @@ int TST_CNT = 0;
int mode = NOT_DEFINED;
-int assoc_num,
- remote_port,
- local_port;
+int assoc_num;
int active = 0;
-char *local_host = NULL;
-char *remote_host = NULL;
+char *local_host;
+char *remote_host;
+char *local_port;
+char *remote_port;
sockaddr_storage_t client_loop,
server_loop;
struct hostent *hst;
@@ -102,6 +102,7 @@ void usage(char *argv0)
/* Parse command line options */
void parse_arguments(int argc, char*argv[]) {
+ struct addrinfo hints, *rp;
int c;
while ((c = getopt(argc, argv, ":H:P:ach:ln:p:")) >= 0) {
@@ -110,7 +111,7 @@ void parse_arguments(int argc, char*argv[]) {
local_host = optarg;
break;
case 'P':
- local_port = atoi(optarg);
+ local_port = optarg;
break;
case 'c':
if (mode == NOT_DEFINED)
@@ -138,7 +139,7 @@ void parse_arguments(int argc, char*argv[]) {
assoc_num = atoi(optarg);
break;
case 'p':
- remote_port = atoi(optarg);
+ remote_port = optarg;
break;
default:
usage(argv[0]);
@@ -146,6 +147,9 @@ void parse_arguments(int argc, char*argv[]) {
}
} /* while() */
+ memset(&hints, 0, sizeof(struct addrinfo));
+ hints.ai_family = AF_INET;
+ hints.ai_protocol = IPPROTO_SCTP;
if (mode == CLIENT) {
if (assoc_num) {
if (assoc_num > MAXCLIENTNUM) {
@@ -160,13 +164,13 @@ void parse_arguments(int argc, char*argv[]) {
assoc_num = 1;
if (remote_host && remote_port) {
- hst = gethostbyname(remote_host);
-
- memcpy(&server_loop.v4.sin_addr, hst->h_addr_list[0],
- sizeof(server_loop.v4.sin_addr));
-
- server_loop.v4.sin_family = AF_INET;
-server_loop.v4.sin_port = htons(remote_port);
+ if (getaddrinfo(remote_host, remote_port, &hints, &rp) != 0) {
+ printf("%s: bad remote hostname or port: %s, %s\n",
+ argv[0], remote_host, remote_port);
+ usage(argv[0]);
+ exit(0);
+ }
+ memcpy(&server_loop, rp->ai_addr, rp->ai_addrlen);
} else {
printf("Remote host and remote port must be defined "
"in client mode\n");
@@ -174,20 +178,12 @@ server_loop.v4.sin_port = htons(remote_port);
exit(0);
}
- if (local_host) {
- hst = gethostbyname(local_host);
-
- memcpy(&client_loop.v4.sin_addr, hst->h_addr_list[0],
- sizeof(client_loop.v4.sin_addr));
- } else
- client_loop.v4.sin_addr.s_addr = INADDR_ANY;
-
- if (local_port)
- client_loop.v4.sin_port = htons(local_port);
- else
- client_loop.v4.sin_port = 0;
-
- client_loop.v4.sin_family = AF_INET;
+ if (getaddrinfo(local_host, local_port, &hints, &rp) != 0) {
+ printf("%s: bad local hostname or port: %s, %s\n",
+ argv[0], local_host, local_port);
+ exit(0);
+ }
+ memcpy(&client_loop, rp->ai_addr, rp->ai_addrlen);
} else if (mode == SERVER) {
if (active) {
printf("This option if for client use only");
@@ -201,23 +197,17 @@ server_loop.v4.sin_port = htons(remote_port);
exit(0);
}
- if (local_host) {
- hst = gethostbyname(local_host);
-
- memcpy(&server_loop.v4.sin_addr, hst->h_addr_list[0],
- sizeof(server_loop.v4.sin_addr));
- } else
- server_loop.v4.sin_addr.s_addr = INADDR_ANY;
-
- if (local_port)
- server_loop.v4.sin_port = htons(local_port);
- else {
+ if (!local_port) {
printf("Specify a local port in server mode.\n");
usage(argv[0]);
exit(0);
}
-
- server_loop.v4.sin_family = AF_INET;
+ if (getaddrinfo(local_host, local_port, &hints, &rp) != 0) {
+ printf("%s: bad local hostname or port: %s, %s\n",
+ argv[0], local_host, local_port);
+ exit(0);
+ }
+ memcpy(&server_loop, rp->ai_addr, rp->ai_addrlen);
} else {
printf("Must assisgn a client or server mode.\n");
usage(argv[0]);
--
2.27.0
^ permalink raw reply related [flat|nested] 7+ messages in thread* [PATCH lksctp-tools 3/4] sctp_test: replace use of deprecated gethostbyname with getaddrinfo
2021-08-04 11:29 [PATCH lksctp-tools 0/4] lksctp-tools: replace use of deprecated gethostbyname with getaddrinfo Xin Long
2021-08-04 11:29 ` [PATCH lksctp-tools 1/4] myftp: " Xin Long
2021-08-04 11:29 ` [PATCH lksctp-tools 2/4] sctp_xconnect: " Xin Long
@ 2021-08-04 11:29 ` Xin Long
2021-08-04 11:29 ` [PATCH lksctp-tools 4/4] sctp_darn: " Xin Long
` (2 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: Xin Long @ 2021-08-04 11:29 UTC (permalink / raw)
To: linux-sctp, Marcelo Ricardo Leitner
This patch is to replace use of deprecated gethostbyname with
getaddrinfo in the file src/apps/sctp_test.c.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
---
src/apps/sctp_test.c | 63 +++++++++++---------------------------------
1 file changed, 16 insertions(+), 47 deletions(-)
diff --git a/src/apps/sctp_test.c b/src/apps/sctp_test.c
index cd7654b..e382804 100644
--- a/src/apps/sctp_test.c
+++ b/src/apps/sctp_test.c
@@ -487,14 +487,11 @@ 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;
@@ -514,27 +511,16 @@ append_addr(const char *parm, struct sockaddr *addrs, int *ret_count)
}
}
- /* Get the entries for this host. */
- hst4 = gethostbyname(ipaddr);
- hst6 = gethostbyname2(ipaddr, 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(ipaddr, NULL, &hints, &res) != 0) {
fprintf(stderr, "bad hostname: %s\n", ipaddr);
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.
@@ -565,34 +551,17 @@ 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);
- if (!ifindex) {
+ if (!ifindex)
b6ap->sin6_scope_id = ifindex;
- }
-
- aptr += sizeof(struct sockaddr_in6);
- } /* for (loop through the new v6 addresses) */
+ }
+ aptr += rp->ai_addrlen;
}
finally:
--
2.27.0
^ permalink raw reply related [flat|nested] 7+ messages in thread* [PATCH lksctp-tools 4/4] sctp_darn: replace use of deprecated gethostbyname with getaddrinfo
2021-08-04 11:29 [PATCH lksctp-tools 0/4] lksctp-tools: replace use of deprecated gethostbyname with getaddrinfo Xin Long
` (2 preceding siblings ...)
2021-08-04 11:29 ` [PATCH lksctp-tools 3/4] sctp_test: " Xin Long
@ 2021-08-04 11:29 ` Xin Long
2021-08-04 23:47 ` [PATCH lksctp-tools 0/4] lksctp-tools: " Xin Long
2021-08-11 17:27 ` mleitner
5 siblings, 0 replies; 7+ messages in thread
From: Xin Long @ 2021-08-04 11:29 UTC (permalink / raw)
To: linux-sctp, Marcelo Ricardo Leitner
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>
---
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
^ permalink raw reply related [flat|nested] 7+ messages in thread* Re: [PATCH lksctp-tools 0/4] lksctp-tools: replace use of deprecated gethostbyname with getaddrinfo
2021-08-04 11:29 [PATCH lksctp-tools 0/4] lksctp-tools: replace use of deprecated gethostbyname with getaddrinfo Xin Long
` (3 preceding siblings ...)
2021-08-04 11:29 ` [PATCH lksctp-tools 4/4] sctp_darn: " Xin Long
@ 2021-08-04 23:47 ` Xin Long
2021-08-11 17:27 ` mleitner
5 siblings, 0 replies; 7+ messages in thread
From: Xin Long @ 2021-08-04 23:47 UTC (permalink / raw)
To: linux-sctp @ vger . kernel . org, Marcelo Ricardo Leitner
On Wed, Aug 4, 2021 at 7:29 PM Xin Long <lucien.xin@gmail.com> wrote:
>
> This patchset is simply to replace use of deprecated gethostbyname
> with getaddrinfo in myftp, sctp_xconnect, sctp_test and sctp_darn.
There are three ways to use this function in this patchset:
a. get IPv4 addresses by a hostname:
hints.ai_family = AF_INET;
hints.ai_protocol = IPPROTO_SCTP;
getaddrinfo(remote_host, NULL, &hints, &rp)
b. get IPv6 addresses by a hostname:
hints.ai_family = AF_INET6;
hints.ai_protocol = IPPROTO_SCTP;
getaddrinfo(remote_host, NULL, &hints, &rp)
c. get IPv4 and IPv6 addresses by a hostname:
hints.ai_family = AF_UNSPEC;
hints.ai_protocol = IPPROTO_SCTP;
getaddrinfo(remote_host, NULL, &hints, &rp)
Note ai_protocol = IPPROTO_SCTP is necessary, especially for case c.
Otherwise, it will return many addresses with different protocol(TCP, UDP...).
>
> Xin Long (4):
> myftp: replace use of deprecated gethostbyname with getaddrinfo
> sctp_xconnect: replace use of deprecated gethostbyname with
> getaddrinfo
> sctp_test: replace use of deprecated gethostbyname with getaddrinfo
> sctp_darn: replace use of deprecated gethostbyname with getaddrinfo
>
> configure.ac | 2 +-
> src/apps/myftp.c | 40 +++----
> src/apps/sctp_darn.c | 246 +++++++++++----------------------------
> src/apps/sctp_test.c | 63 +++-------
> src/apps/sctp_xconnect.c | 72 +++++-------
> 5 files changed, 137 insertions(+), 286 deletions(-)
>
> --
> 2.27.0
>
^ permalink raw reply [flat|nested] 7+ messages in thread* Re: [PATCH lksctp-tools 0/4] lksctp-tools: replace use of deprecated gethostbyname with getaddrinfo
2021-08-04 11:29 [PATCH lksctp-tools 0/4] lksctp-tools: replace use of deprecated gethostbyname with getaddrinfo Xin Long
` (4 preceding siblings ...)
2021-08-04 23:47 ` [PATCH lksctp-tools 0/4] lksctp-tools: " Xin Long
@ 2021-08-11 17:27 ` mleitner
5 siblings, 0 replies; 7+ messages in thread
From: mleitner @ 2021-08-11 17:27 UTC (permalink / raw)
To: Xin Long; +Cc: linux-sctp
On Wed, Aug 04, 2021 at 07:29:12AM -0400, Xin Long wrote:
> This patchset is simply to replace use of deprecated gethostbyname
> with getaddrinfo in myftp, sctp_xconnect, sctp_test and sctp_darn.
Applied. Thanks Xin.
^ permalink raw reply [flat|nested] 7+ messages in thread