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openssl: x509: truncate CN in presence of other attr

Browse source 
https://github.com/warmcat/libwebsockets/issues/2542
This commit is contained in:
Andy Green 2022-01-25 05:40:33 +00:00
parent e5e1b34f84
commit 5124ffe9d4
1 changed files with 12 additions and 3 deletions
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15
lib/tls/openssl/openssl-x509.c
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@ -89,7 +89,8 @@ lws_tls_openssl_cert_info(X509 *x509, enum lws_tls_cert_info type,
#endif
X509_NAME *xn;
#if !defined(LWS_PLAT_OPTEE)
char *p;
char *p, *p1;
size_t rl;
#endif
buf->ns.len = 0;
@ -128,8 +129,16 @@ lws_tls_openssl_cert_info(X509 *x509, enum lws_tls_cert_info type,
return -1;
X509_NAME_oneline(xn, buf->ns.name, (int)len - 2);
p = strstr(buf->ns.name, "/CN=");
if (p)
memmove(buf->ns.name, p + 4, strlen(p + 4) + 1);
if (p) {
p += 4;
p1 = strchr(p, '/');
if (p1)
rl = lws_ptr_diff_size_t(p1, p);
else
rl = strlen(p);
memmove(buf->ns.name, p, rl);
buf->ns.name[rl] = '\0';
}
buf->ns.len = (int)strlen(buf->ns.name);
return 0;
#endif