int
netsnmp_sockaddr_in(struct sockaddr_in *addr,
const char *inpeername, int remote_port)
{
char buf[sizeof(int) * 3 + 2];
sprintf(buf, ":%u", remote_port);
return netsnmp_sockaddr_in2(addr, inpeername, remote_port ? buf : NULL);
}
netsnmp_transport * mei_udp_create_tstring(const char *str, int local,
const char *default_target) {
struct sockaddr_in addr;
if (netsnmp_sockaddr_in2(&addr, str, default_target)) {
return mei_udp_transport(&meiDomain, (struct sockaddr_storage*)&addr, local);
} else {
return NULL;
}
}
netsnmp_transport *
netsnmp_ssh_create_tstring(const char *str, int local,
const char *default_target)
{
struct sockaddr_in addr;
if (netsnmp_sockaddr_in2(&addr, str, default_target)) {
return netsnmp_ssh_transport(&addr, local);
} else {
return NULL;
}
}
int
netsnmp_sockaddr_in2(struct sockaddr_in *addr,
const char *inpeername, const char *default_target)
{
int ret;
if (addr == NULL) {
return 0;
}
DEBUGMSGTL(("netsnmp_sockaddr_in",
"addr %p, inpeername \"%s\", default_target \"%s\"\n",
addr, inpeername ? inpeername : "[NIL]",
default_target ? default_target : "[NIL]"));
memset(addr, 0, sizeof(struct sockaddr_in));
addr->sin_addr.s_addr = htonl(INADDR_ANY);
addr->sin_family = AF_INET;
addr->sin_port = htons((u_short)SNMP_PORT);
{
int port = netsnmp_ds_get_int(NETSNMP_DS_LIBRARY_ID,
NETSNMP_DS_LIB_DEFAULT_PORT);
if (port != 0) {
addr->sin_port = htons((u_short)port);
} else if (default_target != NULL)
netsnmp_sockaddr_in2(addr, default_target, NULL);
}
if (inpeername != NULL && *inpeername != '\0') {
const char *host, *port;
char *peername = NULL;
char *cp;
/*
* Duplicate the peername because we might want to mank around with
* it.
*/
peername = strdup(inpeername);
if (peername == NULL) {
return 0;
}
/*
* Try and extract an appended port number.
*/
cp = strchr(peername, ':');
if (cp != NULL) {
*cp = '\0';
port = cp + 1;
host = peername;
} else {
host = NULL;
port = peername;
}
/*
* Try to convert the user port specifier
*/
if (port && *port == '\0')
port = NULL;
if (port != NULL) {
long int l;
char* ep;
DEBUGMSGTL(("netsnmp_sockaddr_in", "check user service %s\n",
port));
l = strtol(port, &ep, 10);
if (ep != port && *ep == '\0' && 0 <= l && l <= 0x0ffff)
addr->sin_port = htons((u_short)l);
else {
if (host == NULL) {
DEBUGMSGTL(("netsnmp_sockaddr_in",
"servname not numeric, "
"check if it really is a destination)\n"));
host = port;
port = NULL;
} else {
DEBUGMSGTL(("netsnmp_sockaddr_in",
"servname not numeric\n"));
free(peername);
return 0;
}
}
}
/*
* Try to convert the user host specifier
*/
if (host && *host == '\0')
host = NULL;
if (host != NULL) {
DEBUGMSGTL(("netsnmp_sockaddr_in",
"check destination %s\n", host));
if (strcmp(peername, "255.255.255.255") == 0 ) {
/*
* The explicit broadcast address hack
*/
DEBUGMSGTL(("netsnmp_sockaddr_in", "Explicit UDP broadcast\n"));
addr->sin_addr.s_addr = INADDR_NONE;
} else {
ret =
netsnmp_gethostbyname_v4(peername, &addr->sin_addr.s_addr);
if (ret < 0) {
DEBUGMSGTL(("netsnmp_sockaddr_in",
"couldn't resolve hostname\n"));
free(peername);
return 0;
}
DEBUGMSGTL(("netsnmp_sockaddr_in",
"hostname (resolved okay)\n"));
}
}
free(peername);
}
/*
* Finished
*/
DEBUGMSGTL(("netsnmp_sockaddr_in", "return { AF_INET, %s:%hu }\n",
inet_ntoa(addr->sin_addr), ntohs(addr->sin_port)));
return 1;
}
