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Fixed duplicate name/value header block detection

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This commit is contained in:
Tatsuhiro Tsujikawa 2012-03-29 23:50:08 +09:00
parent dea8a484b2
commit 67e83e09a6
1 changed files with 15 additions and 10 deletions
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25
lib/spdylay_frame.c
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@ -218,16 +218,21 @@ int spdylay_frame_unpack_nv_check_name(uint8_t *buf, size_t buflen,
len = spdylay_frame_get_nv_len(in, len_size);
in += len_size+len;
}
qsort(buf, n, sizeof(uint8_t*),
len_size == 2 ?
spdylay_length_prefix_str_compar2 : spdylay_length_prefix_str_compar4);
index = (const uint8_t**)buf;
for(i = 1; i < n; ++i) {
uint32_t len1 = spdylay_frame_get_nv_len(*(index+i-1), len_size);
uint32_t len2 = spdylay_frame_get_nv_len(*(index+i), len_size);
if(len1 == len2 && memcmp(*(index+i-1)+len_size, *(index+i)+len_size,
len_size) == 0) {
return SPDYLAY_ERR_INVALID_HEADER_BLOCK;
if(n > 0) {
uint32_t len1, len2;
qsort(buf, n, sizeof(uint8_t*),
len_size == 2 ?
spdylay_length_prefix_str_compar2 :
spdylay_length_prefix_str_compar4);
index = (const uint8_t**)buf;
len1 = spdylay_frame_get_nv_len(*index, len_size);
for(i = 1; i < n; ++i) {
len2 = spdylay_frame_get_nv_len(*(index+i), len_size);
if(len1 == len2 && memcmp(*(index+i-1)+len_size, *(index+i)+len_size,
len1) == 0) {
return SPDYLAY_ERR_INVALID_HEADER_BLOCK;
}
len1 = len2;
}
}
return 0;