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Fix invalid memory reads

This commit is contained in:
Willem Toorop 2015-07-09 15:40:00 +02:00
parent d9fca20f18
commit 4135f633ac
1 changed files with 3 additions and 1 deletions
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4
src/context.c
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@ -1274,7 +1274,8 @@ set_ub_dns_transport(struct getdns_context* context) {
switch (context->dns_transports[0]) { switch (context->dns_transports[0]) {
case GETDNS_TRANSPORT_UDP: case GETDNS_TRANSPORT_UDP:
set_ub_string_opt(context, "do-udp:", "yes"); set_ub_string_opt(context, "do-udp:", "yes");
if (context->dns_transports[1] == GETDNS_TRANSPORT_TCP) if (context->dns_transport_count > 1
&& context->dns_transports[1] == GETDNS_TRANSPORT_TCP)
set_ub_string_opt(context, "do-tcp:", "yes"); set_ub_string_opt(context, "do-tcp:", "yes");
else else
set_ub_string_opt(context, "do-tcp:", "no"); set_ub_string_opt(context, "do-tcp:", "no");
@ -1333,6 +1334,7 @@ getdns_context_set_dns_transport(struct getdns_context *context,
value == GETDNS_TRANSPORT_TCP_ONLY_KEEP_CONNECTIONS_OPEN || value == GETDNS_TRANSPORT_TCP_ONLY_KEEP_CONNECTIONS_OPEN ||
value == GETDNS_TRANSPORT_TLS_ONLY_KEEP_CONNECTIONS_OPEN) value == GETDNS_TRANSPORT_TLS_ONLY_KEEP_CONNECTIONS_OPEN)
count = 1; count = 1;
context->dns_transport_count = count;
context->dns_transports = GETDNS_XMALLOC(context->my_mf, context->dns_transports = GETDNS_XMALLOC(context->my_mf,
getdns_transport_list_t, count); getdns_transport_list_t, count);