Coverage Report

Created: 2023-06-07 06:21

/src/h2o/lib/common/absprio.c
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Source (jump to first uncovered line)
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/*
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 * Copyright (c) 2019 Fastly
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a copy
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 * of this software and associated documentation files (the "Software"), to
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 * deal in the Software without restriction, including without limitation the
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 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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 * sell copies of the Software, and to permit persons to whom the Software is
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 * furnished to do so, subject to the following conditions:
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 *
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 * The above copyright notice and this permission notice shall be included in
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 * all copies or substantial portions of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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 * IN THE SOFTWARE.
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 */
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#include <ctype.h>
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#include "h2o.h"
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#include "h2o/absprio.h"
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h2o_absprio_t h2o_absprio_default = {H2O_ABSPRIO_DEFAULT_URGENCY, 0};
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void h2o_absprio_parse_priority(const char *s, size_t len, h2o_absprio_t *prio)
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0
{
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    h2o_iovec_t iter = h2o_iovec_init(s, len), value;
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    const char *token;
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    size_t token_len;
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    while ((token = h2o_next_token(&iter, ',', ',', &token_len, &value)) != NULL) {
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        if (token_len != 1) {
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            /* Currently only "u=" and "i=" are supported. Thus token_len should always be 1.
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             * Ignore unknown keys. */
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            continue;
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        }
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        if (token[0] == 'u') {
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            H2O_BUILD_ASSERT(H2O_ABSPRIO_NUM_URGENCY_LEVELS < 10);
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            if (value.base != NULL && value.len == 1 && '0' <= value.base[0] &&
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                value.base[0] <= '0' + H2O_ABSPRIO_NUM_URGENCY_LEVELS - 1)
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                prio->urgency = value.base[0] - '0';
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        } else if (token[0] == 'i') {
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            if (value.base != NULL) {
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                if (value.len == 2 && value.base[0] == '?') {
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                    /* value should contain '?0' or '?1' */
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                    if (value.base[1] == '0')
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                        prio->incremental = 0;
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                    else if (value.base[1] == '1')
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                        prio->incremental = 1;
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                    /* All other cases mean invalid format. Just ignore. */
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                }
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            } else {
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                /* value omitted, meaning that i is true */
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                prio->incremental = 1;
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            }
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        }
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    }
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}