diff options
| -rw-r--r-- | src/libstrongswan/asn1/asn1.c | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/src/libstrongswan/asn1/asn1.c b/src/libstrongswan/asn1/asn1.c index be4403f53..4466b37a4 100644 --- a/src/libstrongswan/asn1/asn1.c +++ b/src/libstrongswan/asn1/asn1.c @@ -129,10 +129,10 @@ chunk_t asn1_build_known_oid(int n) chunk_t asn1_oid_from_string(char *str) { enumerator_t *enumerator; - u_char buf[32]; + u_char buf[64]; char *end; - int i = 0, pos = 0; - u_int val, first = 0; + int i = 0, pos = 0, shift; + u_int val, shifted_val, first = 0; enumerator = enumerator_create_token(str, ".", ""); while (enumerator->enumerate(enumerator, &str)) @@ -152,16 +152,17 @@ chunk_t asn1_oid_from_string(char *str) buf[pos++] = first * 40 + val; break; default: - if (val < 128) + shift = 28; /* sufficient to handle 32 bit node numbers */ + while (shift) { - buf[pos++] = val; + shifted_val = val >> shift; + shift -= 7; + if (shifted_val) /* do not encode leading zeroes */ + { + buf[pos++] = 0x80 | (shifted_val & 0x7F); + } } - else - { - buf[pos++] = 128 | (val >> 7); - buf[pos++] = (val % 256) & 0x7F; - } - break; + buf[pos++] = val & 0x7F; } } enumerator->destroy(enumerator); |