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Fix strncat size argument in send_handshake_query
Found by clang: client.c:1276:26: warning: the value of the size argument in 'strncat' is too large, might lead to a buffer overflow [-Wstrncat-size] strncat(buf, topdomain, sizeof(buf) - strlen(buf)); ^~~~~~~~~~~~~~~~~~~~~~~~~
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@ -1273,7 +1273,7 @@ send_handshake_query(int fd, char *prefix)
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buf[0] = 0;
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strncat(buf, prefix, 60); /* 63 - space for 3 CMC bytes */
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strcat(buf, cmc_dot);
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strncat(buf, topdomain, sizeof(buf) - strlen(buf));
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strncat(buf, topdomain, sizeof(buf) - strlen(buf) - 1);
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send_query(fd, buf);
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}
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