Coverage Report

Created: 2025-08-29 06:24

/src/avahi/fuzz/fuzz-consume-record.c
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Source (jump to first uncovered line)
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/***
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  This file is part of avahi.
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  avahi is free software; you can redistribute it and/or modify it
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  under the terms of the GNU Lesser General Public License as
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  published by the Free Software Foundation; either version 2.1 of the
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  License, or (at your option) any later version.
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  avahi is distributed in the hope that it will be useful, but WITHOUT
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  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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  or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
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  Public License for more details.
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  You should have received a copy of the GNU Lesser General Public
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  License along with avahi; if not, write to the Free Software
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  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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  USA.
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***/
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#include <stdint.h>
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#include <string.h>
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#include "avahi-common/malloc.h"
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#include "avahi-core/dns.h"
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#include "avahi-core/log.h"
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#include "avahi-core/rr-util.h"
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8.62k
void log_function(AvahiLogLevel level, const char *txt) {}
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2.63k
int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
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2.63k
    AvahiDnsPacket *p = NULL;
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2.63k
    AvahiRecord *r = NULL, *rs = NULL, *c = NULL;
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2.63k
    uint8_t rdata[AVAHI_DNS_RDATA_MAX];
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2.63k
    size_t rdata_size;
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2.63k
    int ret;
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2.63k
    avahi_set_log_function(log_function);
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2.63k
    if (!(p = avahi_dns_packet_new(size + AVAHI_DNS_PACKET_EXTRA_SIZE)))
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0
        goto finish;
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2.63k
    memcpy(AVAHI_DNS_PACKET_DATA(p), data, size);
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2.63k
    p->size = size;
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2.63k
    if (!(r = avahi_dns_packet_consume_record(p, NULL)))
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552
        goto finish;
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2.07k
    ret = avahi_record_is_valid(r);
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2.07k
    assert(ret);
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2.07k
    avahi_record_is_goodbye(r);
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2.07k
    avahi_record_is_link_local_address(r);
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2.07k
    avahi_record_get_estimate_size(r);
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2.07k
    avahi_free(avahi_record_to_string(r));
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2.07k
    rdata_size = avahi_rdata_serialize(r, rdata, sizeof(rdata));
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2.07k
    assert(rdata_size != (size_t) -1);
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2.07k
    if (!(rs = avahi_record_new_full(r->key->name, r->key->clazz, r->key->type, r->ttl)))
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0
        goto finish;
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2.07k
    if (avahi_rdata_parse(rs, rdata, rdata_size) < 0)
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0
        goto finish;
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2.07k
    ret = avahi_record_is_valid(rs);
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2.07k
    assert(ret);
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2.07k
    ret = avahi_record_equal_no_ttl(r, rs);
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2.07k
    assert(ret);
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2.07k
    ret = avahi_record_lexicographical_compare(r, rs);
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2.07k
    assert(ret == 0);
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2.07k
    if (!(c = avahi_record_copy(r)))
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0
        goto finish;
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2.07k
    ret = avahi_record_equal_no_ttl(r, c);
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2.07k
    assert(ret);
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2.07k
    ret = avahi_record_lexicographical_compare(r, c);
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2.07k
    assert(ret == 0);
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2.07k
    avahi_record_unref(c);
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2.07k
    if (!(c = avahi_dns_packet_consume_record(p, NULL)))
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749
        goto finish;
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1.33k
    avahi_record_equal_no_ttl(r, c);
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1.33k
    avahi_record_lexicographical_compare(r, c);
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1.33k
    avahi_dns_packet_free(p);
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1.33k
    if (!(p = avahi_dns_packet_new(size + AVAHI_DNS_PACKET_EXTRA_SIZE)))
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0
        goto finish;
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1.33k
    if (!avahi_dns_packet_append_record(p, r, 0, 0))
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        goto finish;
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2.63k
finish:
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2.63k
    if (c)
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1.33k
        avahi_record_unref(c);
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2.63k
    if (rs)
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2.07k
        avahi_record_unref(rs);
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2.63k
    if (r)
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2.07k
        avahi_record_unref(r);
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2.63k
    if (p)
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2.63k
        avahi_dns_packet_free(p);
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2.63k
    return 0;
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1.33k
}