diff options
Diffstat (limited to 'src/nxt_http_request.c')
| -rw-r--r-- | src/nxt_http_request.c | 276 |
1 files changed, 276 insertions, 0 deletions
diff --git a/src/nxt_http_request.c b/src/nxt_http_request.c index ac614df6..04a6f7f3 100644 --- a/src/nxt_http_request.c +++ b/src/nxt_http_request.c @@ -24,6 +24,25 @@ static void nxt_http_request_done(nxt_task_t *task, void *obj, void *data); static u_char *nxt_http_date_cache_handler(u_char *buf, nxt_realtime_t *now, struct tm *tm, size_t size, const char *format); +static nxt_http_name_value_t *nxt_http_argument(nxt_array_t *array, + u_char *name, size_t name_length, uint32_t hash, u_char *start, + u_char *end); +static nxt_int_t nxt_http_cookie_parse(nxt_array_t *cookies, u_char *start, + u_char *end); +static nxt_http_name_value_t *nxt_http_cookie(nxt_array_t *array, u_char *name, + size_t name_length, u_char *start, u_char *end); + + +#define NXT_HTTP_COOKIE_HASH \ + (nxt_http_field_hash_end( \ + nxt_http_field_hash_char( \ + nxt_http_field_hash_char( \ + nxt_http_field_hash_char( \ + nxt_http_field_hash_char( \ + nxt_http_field_hash_char( \ + nxt_http_field_hash_char(NXT_HTTP_FIELD_HASH_INIT, \ + 'c'), 'o'), 'o'), 'k'), 'i'), 'e')) & 0xFFFF) + static const nxt_http_request_state_t nxt_http_request_init_state; static const nxt_http_request_state_t nxt_http_request_body_state; @@ -748,3 +767,260 @@ nxt_http_date_cache_handler(u_char *buf, nxt_realtime_t *now, struct tm *tm, { return nxt_http_date(buf, tm); } + + +nxt_array_t * +nxt_http_arguments_parse(nxt_http_request_t *r) +{ + size_t name_length; + u_char *p, *dst, *dst_start, *start, *end, *name; + uint8_t d0, d1; + uint32_t hash; + nxt_array_t *args; + nxt_http_name_value_t *nv; + + if (r->arguments != NULL) { + return r->arguments; + } + + args = nxt_array_create(r->mem_pool, 2, sizeof(nxt_http_name_value_t)); + if (nxt_slow_path(args == NULL)) { + return NULL; + } + + hash = NXT_HTTP_FIELD_HASH_INIT; + name = NULL; + name_length = 0; + + dst_start = nxt_mp_nget(r->mem_pool, r->args->length); + if (nxt_slow_path(dst_start == NULL)) { + return NULL; + } + + r->args_decoded.start = dst_start; + + start = r->args->start; + end = start + r->args->length; + + for (p = start, dst = dst_start; p < end; p++, dst++) { + *dst = *p; + + switch (*p) { + case '=': + if (name == NULL) { + name_length = dst - dst_start; + name = dst_start; + dst_start = dst + 1; + } + + continue; + + case '&': + if (name_length != 0 || dst != dst_start) { + nv = nxt_http_argument(args, name, name_length, hash, dst_start, + dst); + if (nxt_slow_path(nv == NULL)) { + return NULL; + } + } + + hash = NXT_HTTP_FIELD_HASH_INIT; + name_length = 0; + name = NULL; + dst_start = dst + 1; + + continue; + + case '+': + *dst = ' '; + + break; + + case '%': + if (nxt_slow_path(end - p <= 2)) { + break; + } + + d0 = nxt_hex2int[p[1]]; + d1 = nxt_hex2int[p[2]]; + + if (nxt_slow_path((d0 | d1) >= 16)) { + break; + } + + p += 2; + *dst = (d0 << 4) + d1; + + break; + } + + if (name == NULL) { + hash = nxt_http_field_hash_char(hash, *dst); + } + } + + r->args_decoded.length = dst - r->args_decoded.start; + + if (name_length != 0 || dst != dst_start) { + nv = nxt_http_argument(args, name, name_length, hash, dst_start, dst); + if (nxt_slow_path(nv == NULL)) { + return NULL; + } + } + + r->arguments = args; + + return args; +} + + +static nxt_http_name_value_t * +nxt_http_argument(nxt_array_t *array, u_char *name, size_t name_length, + uint32_t hash, u_char *start, u_char *end) +{ + size_t length; + nxt_http_name_value_t *nv; + + nv = nxt_array_add(array); + if (nxt_slow_path(nv == NULL)) { + return NULL; + } + + nv->hash = nxt_http_field_hash_end(hash) & 0xFFFF; + + length = end - start; + + if (name == NULL) { + name_length = length; + name = start; + length = 0; + } + + nv->name_length = name_length; + nv->value_length = length; + nv->name = name; + nv->value = start; + + return nv; +} + + +nxt_array_t * +nxt_http_cookies_parse(nxt_http_request_t *r) +{ + nxt_int_t ret; + nxt_array_t *cookies; + nxt_http_field_t *f; + + if (r->cookies != NULL) { + return r->cookies; + } + + cookies = nxt_array_create(r->mem_pool, 2, sizeof(nxt_http_name_value_t)); + if (nxt_slow_path(cookies == NULL)) { + return NULL; + } + + nxt_list_each(f, r->fields) { + + if (f->hash != NXT_HTTP_COOKIE_HASH + || f->name_length != 6 + || nxt_strncasecmp(f->name, (u_char *) "Cookie", 6) != 0) + { + continue; + } + + ret = nxt_http_cookie_parse(cookies, f->value, + f->value + f->value_length); + if (ret != NXT_OK) { + return NULL; + } + + } nxt_list_loop; + + r->cookies = cookies; + + return cookies; +} + + +static nxt_int_t +nxt_http_cookie_parse(nxt_array_t *cookies, u_char *start, u_char *end) +{ + size_t name_length; + u_char c, *p, *name; + nxt_http_name_value_t *nv; + + name = NULL; + name_length = 0; + + for (p = start; p < end; p++) { + c = *p; + + if (c == '=') { + while (start[0] == ' ') { start++; } + + name_length = p - start; + + if (name_length != 0) { + name = start; + } + + start = p + 1; + + } else if (c == ';') { + if (name != NULL) { + nv = nxt_http_cookie(cookies, name, name_length, start, p); + if (nxt_slow_path(nv == NULL)) { + return NXT_ERROR; + } + } + + name = NULL; + start = p + 1; + } + } + + if (name != NULL) { + nv = nxt_http_cookie(cookies, name, name_length, start, p); + if (nxt_slow_path(nv == NULL)) { + return NXT_ERROR; + } + } + + return NXT_OK; +} + + +static nxt_http_name_value_t * +nxt_http_cookie(nxt_array_t *array, u_char *name, size_t name_length, + u_char *start, u_char *end) +{ + u_char c, *p; + uint32_t hash; + nxt_http_name_value_t *nv; + + nv = nxt_array_add(array); + if (nxt_slow_path(nv == NULL)) { + return NULL; + } + + nv->name_length = name_length; + nv->name = name; + + hash = NXT_HTTP_FIELD_HASH_INIT; + + for (p = name; p < name + name_length; p++) { + c = *p; + hash = nxt_http_field_hash_char(hash, c); + } + + nv->hash = nxt_http_field_hash_end(hash) & 0xFFFF; + + while (start < end && end[-1] == ' ') { end--; } + + nv->value_length = end - start; + nv->value = start; + + return nv; +} |