39 lines
828 B
C
39 lines
828 B
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "msg-format.h"
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#define handle_err(fun,msg)\
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fprintf (stderr, "%s: file %s line %d %s\n", fun, __FILE__, __LINE__, msg);
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// [type] [len] [val]
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// 3 valsize constr
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int msg_format_con (char *buf, const char *constr, size_t *msgsize)
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{
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assert (buf != NULL);
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assert (*msgsize + 3 <= BUFSIZ);
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if (*msgsize + 3 > BUFSIZ) {
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handle_err ("msg_format_con", "msgsize > BUFSIZ");
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return 1;
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}
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buf[0] = MSG_TYPE_CON;
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short final_size = (short) *msgsize;
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memcpy (buf + 1, &final_size, 2);
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memcpy (buf + 3, constr, *msgsize);
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return 0;
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}
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// [type] [len]
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// 4 0
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int msg_format_ack (char *buf)
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{
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assert (buf != NULL);
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memset(buf, 0, 3);
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buf[0] = MSG_TYPE_ACK;
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return 0;
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}
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