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SLIRP: Fix potential NULL pointer dereference and excess left shift (COVERITY)

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This commit is contained in:
Mark Pizzolato
2017-03-13 12:58:40 -07:00
parent d1768d2771
commit 979aec293e
1 changed files with 3 additions and 2 deletions
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5
slirp_glue/sim_slirp.c
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@@ -84,7 +84,8 @@ if (((ipaddrstr = strchr(gbuf, ':')) == NULL) || (*(ipaddrstr+1) == 0)) {
}
*ipaddrstr++ = 0;
if (((portstr = strchr (ipaddrstr, ':')) == NULL) || (*(portstr+1) == 0)) {
if ((ipaddrstr) &&
(((portstr = strchr (ipaddrstr, ':')) == NULL) || (*(portstr+1) == 0))) {
sim_printf ("redir %s syntax error\n", tcpudp[is_udp]);
return -1;
}
@@ -314,7 +315,7 @@ if (err) {
return NULL;
}
slirp->vnetmask.s_addr = htonl(~((1 << (32-slirp->maskbits)) - 1));
slirp->vnetmask.s_addr = slirp->maskbits ? htonl(~((1 << (32-slirp->maskbits)) - 1)) : 0xFFFFFFFF;
slirp->vnetwork.s_addr = slirp->vgateway.s_addr & slirp->vnetmask.s_addr;
if ((slirp->vgateway.s_addr & ~slirp->vnetmask.s_addr) == 0)
slirp->vgateway.s_addr = htonl(ntohl(slirp->vnetwork.s_addr) | 2);