freshlybakedca.ke
Git fork
1#include "builtin.h"
2#include "transport.h"
3
4static const char usage_msg[] =
5 "git remote-fd <remote> <url>";
6
7/*
8 * URL syntax:
9 * 'fd::<inoutfd>[/<anything>]' Read/write socket pair
10 * <inoutfd>.
11 * 'fd::<infd>,<outfd>[/<anything>]' Read pipe <infd> and write
12 * pipe <outfd>.
13 * [foo] indicates 'foo' is optional. <anything> is any string.
14 *
15 * The data output to <outfd>/<inoutfd> should be passed unmolested to
16 * git-receive-pack/git-upload-pack/git-upload-archive and output of
17 * git-receive-pack/git-upload-pack/git-upload-archive should be passed
18 * unmolested to <infd>/<inoutfd>.
19 *
20 */
21
22#define MAXCOMMAND 4096
23
24static void command_loop(int input_fd, int output_fd)
25{
26 char buffer[MAXCOMMAND];
27
28 while (1) {
29 size_t i;
30 if (!fgets(buffer, MAXCOMMAND - 1, stdin)) {
31 if (ferror(stdin))
32 die("Input error");
33 return;
34 }
35 /* Strip end of line characters. */
36 i = strlen(buffer);
37 while (i > 0 && isspace(buffer[i - 1]))
38 buffer[--i] = 0;
39
40 if (!strcmp(buffer, "capabilities")) {
41 printf("*connect\n\n");
42 fflush(stdout);
43 } else if (starts_with(buffer, "connect ")) {
44 printf("\n");
45 fflush(stdout);
46 if (bidirectional_transfer_loop(input_fd,
47 output_fd))
48 die("Copying data between file descriptors failed");
49 return;
50 } else {
51 die("Bad command: %s", buffer);
52 }
53 }
54}
55
56int cmd_remote_fd(int argc,
57 const char **argv,
58 const char *prefix,
59 struct repository *repo UNUSED)
60{
61 int input_fd = -1;
62 int output_fd = -1;
63 char *end;
64
65 BUG_ON_NON_EMPTY_PREFIX(prefix);
66
67 show_usage_if_asked(argc, argv, usage_msg);
68 if (argc != 3)
69 usage(usage_msg);
70
71 input_fd = (int)strtoul(argv[2], &end, 10);
72
73 if ((end == argv[2]) || (*end != ',' && *end != '/' && *end))
74 die("Bad URL syntax");
75
76 if (*end == '/' || !*end) {
77 output_fd = input_fd;
78 } else {
79 char *end2;
80 output_fd = (int)strtoul(end + 1, &end2, 10);
81
82 if ((end2 == end + 1) || (*end2 != '/' && *end2))
83 die("Bad URL syntax");
84 }
85
86 command_loop(input_fd, output_fd);
87 return 0;
88}