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cc6d3591ad
When I wanted to append an ordinary C string to a BinarySink, without any prefix length field or suffix terminator, I was using the idiom put_datapl(bs, ptrlen_from_asciz(string)); but I've finally decided that's too cumbersome, and it deserves a shorter name. put_dataz(bs, string) now does the same thing - in fact it's a macro expanding to exactly the above. While I'm at it, I've also added put_datalit(), which is the same except that it expects a C string literal (and will enforce that at compile time, via PTRLEN_LITERAL which it calls in turn). You can use that where possible to avoid the run-time cost of the strlen.
29 lines
887 B
C
29 lines
887 B
C
#include "putty.h"
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#include "misc.h"
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void seat_antispoof_msg(InteractionReadySeat iseat, const char *msg)
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{
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strbuf *sb = strbuf_new();
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seat_set_trust_status(iseat.seat, true);
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if (seat_can_set_trust_status(iseat.seat)) {
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/*
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* If the seat can directly indicate that this message is
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* generated by the client, then we can just use the message
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* unmodified as an unspoofable header.
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*/
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put_dataz(sb, msg);
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} else if (*msg) {
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/*
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* Otherwise, add enough padding around it that the server
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* wouldn't be able to mimic it within our line-length
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* constraint.
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*/
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put_fmt(sb, "-- %s ", msg);
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while (sb->len < 78)
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put_byte(sb, '-');
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}
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put_datapl(sb, PTRLEN_LITERAL("\r\n"));
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seat_banner_pl(iseat, ptrlen_from_strbuf(sb));
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strbuf_free(sb);
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}
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