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Try to resolve hostnames into ip addresses

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Dont assume everyone just uses dotted-decimal always on their networks.
Try resolve hostnames specified in the iscsi URLs into addresses
This commit is contained in:
Ronnie Sahlberg
2010-12-28 13:51:54 +11:00
parent 7a7a227fee
commit 647ebd222e
1 changed files with 17 additions and 4 deletions
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21
lib/socket.c
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@@ -27,6 +27,7 @@
#include <poll.h>
#include <sys/ioctl.h>
#include <arpa/inet.h>
#include <netdb.h>
#include "iscsi.h"
#include "iscsi-private.h"
#include "slist.h"
@@ -81,10 +82,22 @@ iscsi_connect_async(struct iscsi_context *iscsi, const char *portal,
sin->sin_family = AF_INET;
sin->sin_port = htons(port);
if (inet_pton(AF_INET, addr, &sin->sin_addr) != 1) {
iscsi_set_error(iscsi, "Invalid target:%s "
"Failed to convert to ip address.", addr);
free(addr);
return -1;
struct hostent *he;
he = gethostbyname2(addr, AF_INET);
if (he == NULL) {
iscsi_set_error(iscsi, "Invalid target:%s "
"Failed to resolve hostname.", addr);
free(addr);
return -1;
}
if (he->h_addrtype != AF_INET) {
iscsi_set_error(iscsi, "Invalid target:%s "
"Can not resolve into IPv4.", addr);
free(addr);
return -1;
}
sin->sin_addr.s_addr = *(uint32_t *)he->h_addr_list[0];
}
free(addr);