bd33a29283
* il/vcs-helper: Reset possible helper before reusing remote structure Remove special casing of http, https and ftp Support remote archive from all smart transports Support remote helpers implementing smart transports Support taking over transports Refactor git transport options parsing Pass unknown protocols to external protocol handlers Support mandatory capabilities Add remote helper debug mode Conflicts: Documentation/git-remote-helpers.txt transport-helper.c
132 lines
3.4 KiB
C
132 lines
3.4 KiB
C
/*
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* Copyright (c) 2006 Franck Bui-Huu
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* Copyright (c) 2006 Rene Scharfe
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*/
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#include "cache.h"
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#include "builtin.h"
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#include "archive.h"
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#include "transport.h"
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#include "parse-options.h"
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#include "pkt-line.h"
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#include "sideband.h"
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static void create_output_file(const char *output_file)
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{
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int output_fd = open(output_file, O_CREAT | O_WRONLY | O_TRUNC, 0666);
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if (output_fd < 0)
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die_errno("could not create archive file '%s'", output_file);
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if (output_fd != 1) {
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if (dup2(output_fd, 1) < 0)
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die_errno("could not redirect output");
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else
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close(output_fd);
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}
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}
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static int run_remote_archiver(int argc, const char **argv,
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const char *remote, const char *exec)
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{
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char buf[LARGE_PACKET_MAX];
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int fd[2], i, len, rv;
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struct transport *transport;
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struct remote *_remote;
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_remote = remote_get(remote);
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if (!_remote->url[0])
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die("git archive: Remote with no URL");
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transport = transport_get(_remote, _remote->url[0]);
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transport_connect(transport, "git-upload-archive", exec, fd);
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for (i = 1; i < argc; i++)
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packet_write(fd[1], "argument %s\n", argv[i]);
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packet_flush(fd[1]);
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len = packet_read_line(fd[0], buf, sizeof(buf));
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if (!len)
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die("git archive: expected ACK/NAK, got EOF");
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if (buf[len-1] == '\n')
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buf[--len] = 0;
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if (strcmp(buf, "ACK")) {
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if (len > 5 && !prefixcmp(buf, "NACK "))
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die("git archive: NACK %s", buf + 5);
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die("git archive: protocol error");
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}
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len = packet_read_line(fd[0], buf, sizeof(buf));
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if (len)
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die("git archive: expected a flush");
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/* Now, start reading from fd[0] and spit it out to stdout */
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rv = recv_sideband("archive", fd[0], 1);
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rv |= transport_disconnect(transport);
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return !!rv;
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}
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static const char *format_from_name(const char *filename)
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{
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const char *ext = strrchr(filename, '.');
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if (!ext)
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return NULL;
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ext++;
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if (!strcasecmp(ext, "zip"))
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return "zip";
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return NULL;
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}
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#define PARSE_OPT_KEEP_ALL ( PARSE_OPT_KEEP_DASHDASH | \
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PARSE_OPT_KEEP_ARGV0 | \
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PARSE_OPT_KEEP_UNKNOWN | \
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PARSE_OPT_NO_INTERNAL_HELP )
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int cmd_archive(int argc, const char **argv, const char *prefix)
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{
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const char *exec = "git-upload-archive";
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const char *output = NULL;
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const char *remote = NULL;
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const char *format = NULL;
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struct option local_opts[] = {
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OPT_STRING('o', "output", &output, "file",
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"write the archive to this file"),
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OPT_STRING(0, "remote", &remote, "repo",
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"retrieve the archive from remote repository <repo>"),
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OPT_STRING(0, "exec", &exec, "cmd",
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"path to the remote git-upload-archive command"),
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OPT_STRING(0, "format", &format, "fmt", "archive format"),
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OPT_END()
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};
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char fmt_opt[32];
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argc = parse_options(argc, argv, prefix, local_opts, NULL,
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PARSE_OPT_KEEP_ALL);
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if (output) {
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create_output_file(output);
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if (!format)
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format = format_from_name(output);
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}
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if (format) {
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sprintf(fmt_opt, "--format=%s", format);
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/*
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* We have enough room in argv[] to muck it in place,
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* because either --format and/or --output must have
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* been given on the original command line if we get
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* to this point, and parse_options() must have eaten
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* it, i.e. we can add back one element to the array.
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* But argv[] may contain "--"; we should make it the
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* first option.
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*/
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memmove(argv + 2, argv + 1, sizeof(*argv) * argc);
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argv[1] = fmt_opt;
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argv[++argc] = NULL;
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}
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if (remote)
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return run_remote_archiver(argc, argv, remote, exec);
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setvbuf(stderr, NULL, _IOLBF, BUFSIZ);
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return write_archive(argc, argv, prefix, 1);
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}
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