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DPP2: Version information in bootstrapping info URI

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Add the local supported version information into the bootstrapping
information (V=2 in the URI) and parse this from received URI.

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
This commit is contained in:
Jouni Malinen 2020-05-05 20:48:23 +03:00 committed by Jouni Malinen
parent cbafc8ef4b
commit 7dd768c3ca
2 changed files with 34 additions and 3 deletions
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36
src/common/dpp.c
View file

@ -1042,6 +1042,26 @@ int dpp_parse_uri_info(struct dpp_bootstrap_info *bi, const char *info)
}
int dpp_parse_uri_version(struct dpp_bootstrap_info *bi, const char *version)
{
#ifdef CONFIG_DPP2
if (!version || DPP_VERSION < 2)
return 0;
if (*version == '1')
bi->version = 1;
else if (*version == '2')
bi->version = 2;
else
wpa_printf(MSG_DEBUG, "DPP: Unknown URI version");
wpa_printf(MSG_DEBUG, "DPP: URI version: %d", bi->version);
#endif /* CONFIG_DPP2 */
return 0;
}
static const struct dpp_curve_params *
dpp_get_curve_oid(const ASN1_OBJECT *poid)
{
@ -1239,6 +1259,7 @@ static struct dpp_bootstrap_info * dpp_parse_uri(const char *uri)
const char *pos = uri;
const char *end;
const char *chan_list = NULL, *mac = NULL, *info = NULL, *pk = NULL;
const char *version = NULL;
struct dpp_bootstrap_info *bi;
wpa_hexdump_ascii(MSG_DEBUG, "DPP: URI", uri, os_strlen(uri));
@ -1269,6 +1290,8 @@ static struct dpp_bootstrap_info * dpp_parse_uri(const char *uri)
info = pos + 2;
else if (pos[0] == 'K' && pos[1] == ':' && !pk)
pk = pos + 2;
else if (pos[0] == 'V' && pos[1] == ':' && !version)
version = pos + 2;
else
wpa_hexdump_ascii(MSG_DEBUG,
"DPP: Ignore unrecognized URI parameter",
@ -1289,6 +1312,7 @@ static struct dpp_bootstrap_info * dpp_parse_uri(const char *uri)
dpp_parse_uri_chan_list(bi, chan_list) < 0 ||
dpp_parse_uri_mac(bi, mac) < 0 ||
dpp_parse_uri_info(bi, info) < 0 ||
dpp_parse_uri_version(bi, info) < 0 ||
dpp_parse_uri_pk(bi, pk) < 0) {
dpp_bootstrap_info_free(bi);
bi = NULL;
@ -2327,18 +2351,22 @@ static int dpp_gen_uri(struct dpp_bootstrap_info *bi)
len += os_strlen(macstr); /* M:...; */
if (bi->info)
len += 3 + os_strlen(bi->info); /* I:...; */
#ifdef CONFIG_DPP2
len += 4; /* V:2; */
#endif /* CONFIG_DPP2 */
len += 4 + os_strlen(bi->pk); /* K:...;; */
os_free(bi->uri);
bi->uri = os_malloc(len + 1);
if (!bi->uri)
return -1;
os_snprintf(bi->uri, len + 1, "DPP:%s%s%s%s%s%s%sK:%s;;",
os_snprintf(bi->uri, len + 1, "DPP:%s%s%s%s%s%s%s%sK:%s;;",
bi->chan ? "C:" : "", bi->chan ? bi->chan : "",
bi->chan ? ";" : "",
macstr,
bi->info ? "I:" : "", bi->info ? bi->info : "",
bi->info ? ";" : "",
DPP_VERSION == 2 ? "V:2;" : "",
bi->pk);
return 0;
}
@ -10660,14 +10688,16 @@ int dpp_bootstrap_info(struct dpp_global *dpp, int id,
"num_freq=%u\n"
"use_freq=%u\n"
"curve=%s\n"
"pkhash=%s\n",
"pkhash=%s\n"
"version=%d\n",
dpp_bootstrap_type_txt(bi->type),
MAC2STR(bi->mac_addr),
bi->info ? bi->info : "",
bi->num_freq,
bi->num_freq == 1 ? bi->freq[0] : 0,
bi->curve->name,
pkhash);
pkhash,
bi->version);
}

1
src/common/dpp.h
View file

@ -142,6 +142,7 @@ struct dpp_bootstrap_info {
char *pk;
unsigned int freq[DPP_BOOTSTRAP_MAX_FREQ];
unsigned int num_freq;
u8 version;
int own;
EVP_PKEY *pubkey;
u8 pubkey_hash[SHA256_MAC_LEN];