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dpp-util: fail on duplicate values in URI

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The MAC and version elements weren't super critical but the channel
and bootstrapping key elements would result in memory leaks if there
were duplicates.

This patch now will not allow duplicate elements in the URI.

Fixes: f7f602e1b1e7 ("dpp-util: add URI parsing")
This commit is contained in:
James Prestwood 2025-04-16 10:33:39 -07:00 committed by Denis Kenzior
parent d1aa4009bc
commit 603d6b2881
1 changed files with 13 additions and 0 deletions
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13
src/dpp-util.c
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@ -1166,21 +1166,34 @@ struct dpp_uri_info *dpp_parse_uri(const char *uri)
switch (*pos) {
case 'C':
if (L_WARN_ON(info->freqs))
goto free_info;
info->freqs = dpp_parse_class_and_channel(pos + 2, len);
if (!info->freqs)
goto free_info;
break;
case 'M':
if (L_WARN_ON(!l_memeqzero(info->mac,
sizeof(info->mac))))
goto free_info;
ret = dpp_parse_mac(pos + 2, len, info->mac);
if (ret < 0)
goto free_info;
break;
case 'V':
if (L_WARN_ON(info->version != 0))
goto free_info;
ret = dpp_parse_version(pos + 2, len, &info->version);
if (ret < 0)
goto free_info;
break;
case 'K':
if (L_WARN_ON(info->boot_public))
goto free_info;
info->boot_public = dpp_parse_key(pos + 2, len);
if (!info->boot_public)
goto free_info;