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rpcd-mod-luci: fix crash on not existing uci options

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Checking the return value of uci_lookup_ptr() is not enough to ensure that
the requested optiomn has actually been found.

Signed-off-by: Jo-Philipp Wich <jo@mein.io>
This commit is contained in:
Jo-Philipp Wich 2019-11-02 20:13:00 +01:00
parent 1b835a50aa
commit 180f6b78a2
1 changed files with 4 additions and 4 deletions
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8
libs/rpcd-mod-luci/src/luci.c
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@ -359,7 +359,7 @@ find_leasefile(struct uci_context *uci, const char *section)
ptr.option = "leasefile";
ptr.o = NULL;
if (uci_lookup_ptr(uci, &ptr, NULL, true))
if (uci_lookup_ptr(uci, &ptr, NULL, true) || ptr.o == NULL)
continue;
if (ptr.o->type != UCI_TYPE_STRING)
@ -1254,7 +1254,7 @@ rpc_luci_get_host_hints_uci(struct reply_context *rctx)
ptr.option = "ip";
ptr.o = NULL;
if (uci_lookup_ptr(uci, &ptr, NULL, true))
if (uci_lookup_ptr(uci, &ptr, NULL, true) || ptr.o == NULL)
continue;
if (ptr.o->type != UCI_TYPE_STRING)
@ -1266,7 +1266,7 @@ rpc_luci_get_host_hints_uci(struct reply_context *rctx)
ptr.option = "name";
ptr.o = NULL;
if (!uci_lookup_ptr(uci, &ptr, NULL, true) &&
if (!uci_lookup_ptr(uci, &ptr, NULL, true) && ptr.o != NULL &&
ptr.o->type == UCI_TYPE_STRING)
n = ptr.o->v.string;
else
@ -1275,7 +1275,7 @@ rpc_luci_get_host_hints_uci(struct reply_context *rctx)
ptr.option = "mac";
ptr.o = NULL;
if (uci_lookup_ptr(uci, &ptr, NULL, true))
if (uci_lookup_ptr(uci, &ptr, NULL, true) || ptr.o == NULL)
continue;
if (ptr.o->type == UCI_TYPE_STRING) {