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bb246590a1
We just say "Expected two arguments" when we get a different number of arguments, but we can be slightly friendlier. People shouldn't generally be running remote helpers themselves, but curious users might say "git remote-ext -h". Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
82 lines
1.8 KiB
C
82 lines
1.8 KiB
C
#include "builtin.h"
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#include "transport.h"
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static const char usage_msg[] =
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"git remote-fd <remote> <url>";
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/*
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* URL syntax:
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* 'fd::<inoutfd>[/<anything>]' Read/write socket pair
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* <inoutfd>.
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* 'fd::<infd>,<outfd>[/<anything>]' Read pipe <infd> and write
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* pipe <outfd>.
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* [foo] indicates 'foo' is optional. <anything> is any string.
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*
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* The data output to <outfd>/<inoutfd> should be passed unmolested to
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* git-receive-pack/git-upload-pack/git-upload-archive and output of
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* git-receive-pack/git-upload-pack/git-upload-archive should be passed
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* unmolested to <infd>/<inoutfd>.
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*
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*/
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#define MAXCOMMAND 4096
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static void command_loop(int input_fd, int output_fd)
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{
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char buffer[MAXCOMMAND];
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while (1) {
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size_t i;
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if (!fgets(buffer, MAXCOMMAND - 1, stdin)) {
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if (ferror(stdin))
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die("Input error");
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return;
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}
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/* Strip end of line characters. */
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i = strlen(buffer);
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while (i > 0 && isspace(buffer[i - 1]))
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buffer[--i] = 0;
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if (!strcmp(buffer, "capabilities")) {
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printf("*connect\n\n");
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fflush(stdout);
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} else if (!strncmp(buffer, "connect ", 8)) {
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printf("\n");
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fflush(stdout);
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if (bidirectional_transfer_loop(input_fd,
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output_fd))
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die("Copying data between file descriptors failed");
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return;
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} else {
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die("Bad command: %s", buffer);
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}
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}
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}
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int cmd_remote_fd(int argc, const char **argv, const char *prefix)
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{
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int input_fd = -1;
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int output_fd = -1;
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char *end;
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if (argc != 3)
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usage(usage_msg);
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input_fd = (int)strtoul(argv[2], &end, 10);
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if ((end == argv[2]) || (*end != ',' && *end != '/' && *end))
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die("Bad URL syntax");
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if (*end == '/' || !*end) {
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output_fd = input_fd;
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} else {
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char *end2;
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output_fd = (int)strtoul(end + 1, &end2, 10);
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if ((end2 == end + 1) || (*end2 != '/' && *end2))
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die("Bad URL syntax");
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}
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command_loop(input_fd, output_fd);
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return 0;
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}
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