#include "builtin.h" #include "transport.h" /* * URL syntax: * 'fd::<inoutfd>[/<anything>]' Read/write socket pair * <inoutfd>. * 'fd::<infd>,<outfd>[/<anything>]' Read pipe <infd> and write * pipe <outfd>. * [foo] indicates 'foo' is optional. <anything> is any string. * * The data output to <outfd>/<inoutfd> should be passed unmolested to * git-receive-pack/git-upload-pack/git-upload-archive and output of * git-receive-pack/git-upload-pack/git-upload-archive should be passed * unmolested to <infd>/<inoutfd>. * */ #define MAXCOMMAND 4096 static void command_loop(int input_fd, int output_fd) { char buffer[MAXCOMMAND]; while (1) { size_t i; if (!fgets(buffer, MAXCOMMAND - 1, stdin)) { if (ferror(stdin)) die("Input error"); return; } /* Strip end of line characters. */ i = strlen(buffer); while (i > 0 && isspace(buffer[i - 1])) buffer[--i] = 0; if (!strcmp(buffer, "capabilities")) { printf("*connect\n\n"); fflush(stdout); } else if (!strncmp(buffer, "connect ", 8)) { printf("\n"); fflush(stdout); if (bidirectional_transfer_loop(input_fd, output_fd)) die("Copying data between file descriptors failed"); return; } else { die("Bad command: %s", buffer); } } } int cmd_remote_fd(int argc, const char **argv, const char *prefix) { int input_fd = -1; int output_fd = -1; char *end; if (argc != 3) die("Expected two arguments"); input_fd = (int)strtoul(argv[2], &end, 10); if ((end == argv[2]) || (*end != ',' && *end != '/' && *end)) die("Bad URL syntax"); if (*end == '/' || !*end) { output_fd = input_fd; } else { char *end2; output_fd = (int)strtoul(end + 1, &end2, 10); if ((end2 == end + 1) || (*end2 != '/' && *end2)) die("Bad URL syntax"); } command_loop(input_fd, output_fd); return 0; }