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d5fc8fcb86
This solves setting XXH_INLINE_ALL in a cleaner way, because the imported header is not modified, easing future updates. see 6f7cc11e6dd0f01b437fba893da2edd2362660a2
57 lines
1.3 KiB
C
57 lines
1.3 KiB
C
/*
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* Dynamic server cookie calculator
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*
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* Copyright 2021 Willy Tarreau <w@1wt.eu>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <arpa/inet.h>
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#include <haproxy/xxhash.h>
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__attribute__((noreturn)) void die(int code, const char *format, ...)
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{
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va_list args;
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va_start(args, format);
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vfprintf(stderr, format, args);
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va_end(args);
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exit(code);
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}
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int main(int argc, char **argv)
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{
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size_t key_len;
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int addr_len;
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char *buf;
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int port;
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if (argc < 4)
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die(1, "Usage: %s <key> <ip> <port>\n", argv[0]);
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key_len = strlen(argv[1]);
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buf = realloc(strdup(argv[1]), key_len + 16 + 4);
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if (!buf)
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die(2, "Not enough memory\n");
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if (inet_pton(AF_INET, argv[2], buf + key_len) > 0)
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addr_len = 4;
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else if (inet_pton(AF_INET6, argv[2], buf + key_len) > 0)
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addr_len = 16;
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else
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die(3, "Cannot parse address <%s> as IPv4/IPv6\n", argv[2]);
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port = htonl(atoi(argv[3]));
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memcpy(buf + key_len + addr_len, &port, 4);
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printf("%016llx\n", (long long)XXH64(buf, key_len + addr_len + 4, 0));
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return 0;
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}
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