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ed1902ef5c
A single sideband packet may sometimes contain multiple lines of progress messages, but we prepend "remote: " only to the whole buffer which creates a messed up display in that case. Make sure that the "remote: " prefix is applied to every remote lines. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
94 lines
2.2 KiB
C
94 lines
2.2 KiB
C
#include "pkt-line.h"
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#include "sideband.h"
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/*
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* Receive multiplexed output stream over git native protocol.
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* in_stream is the input stream from the remote, which carries data
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* in pkt_line format with band designator. Demultiplex it into out
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* and err and return error appropriately. Band #1 carries the
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* primary payload. Things coming over band #2 is not necessarily
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* error; they are usually informative message on the standard error
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* stream, aka "verbose"). A message over band #3 is a signal that
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* the remote died unexpectedly. A flush() concludes the stream.
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*/
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int recv_sideband(const char *me, int in_stream, int out, int err)
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{
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char buf[7 + LARGE_PACKET_MAX + 1];
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strcpy(buf, "remote:");
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while (1) {
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int band, len;
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len = packet_read_line(in_stream, buf+7, LARGE_PACKET_MAX);
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if (len == 0)
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break;
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if (len < 1) {
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len = sprintf(buf, "%s: protocol error: no band designator\n", me);
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safe_write(err, buf, len);
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return SIDEBAND_PROTOCOL_ERROR;
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}
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band = buf[7] & 0xff;
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len--;
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switch (band) {
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case 3:
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buf[7] = ' ';
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buf[8+len] = '\n';
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safe_write(err, buf, 8+len+1);
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return SIDEBAND_REMOTE_ERROR;
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case 2:
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buf[7] = ' ';
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len += 8;
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while (1) {
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int brk = 8;
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while (brk < len) {
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brk++;
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if (buf[brk-1] == '\n' ||
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buf[brk-1] == '\r')
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break;
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}
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safe_write(err, buf, brk);
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if (brk < len) {
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memmove(buf + 8, buf + brk, len - brk);
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len = len - brk + 8;
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} else
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break;
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}
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continue;
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case 1:
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safe_write(out, buf+8, len);
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continue;
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default:
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len = sprintf(buf,
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"%s: protocol error: bad band #%d\n",
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me, band);
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safe_write(err, buf, len);
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return SIDEBAND_PROTOCOL_ERROR;
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}
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}
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return 0;
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}
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/*
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* fd is connected to the remote side; send the sideband data
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* over multiplexed packet stream.
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*/
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ssize_t send_sideband(int fd, int band, const char *data, ssize_t sz, int packet_max)
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{
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ssize_t ssz = sz;
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const char *p = data;
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while (sz) {
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unsigned n;
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char hdr[5];
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n = sz;
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if (packet_max - 5 < n)
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n = packet_max - 5;
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sprintf(hdr, "%04x", n + 5);
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hdr[4] = band;
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safe_write(fd, hdr, 5);
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safe_write(fd, p, n);
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p += n;
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sz -= n;
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}
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return ssz;
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}
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