built-in tar-tree and remote tar-tree

[git.git] / builtin-upload-tar.c

diff --git a/builtin-upload-tar.c b/builtin-upload-tar.c
new file mode 100644 (file)
index 0000000..d4fa7b5
--- /dev/null
+++ b/builtin-upload-tar.c
@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2006 Junio C Hamano
+ */
+#include "cache.h"
+#include "pkt-line.h"
+#include "exec_cmd.h"
+#include "builtin.h"
+
+static const char upload_tar_usage[] = "git-upload-tar <repo>";
+
+static int nak(const char *reason)
+{
+       packet_write(1, "NACK %s\n", reason);
+       packet_flush(1);
+       return 1;
+}
+
+int cmd_upload_tar(int argc, const char **argv, char **envp)
+{
+       int len;
+       const char *dir = argv[1];
+       char buf[8192];
+       unsigned char sha1[20];
+       char *base = NULL;
+       char hex[41];
+       int ac;
+       const char *av[4];
+
+       if (argc != 2)
+               usage(upload_tar_usage);
+       if (strlen(dir) < sizeof(buf)-1)
+               strcpy(buf, dir); /* enter-repo smudges its argument */
+       else
+               packet_write(1, "NACK insanely long repository name %s\n", dir);
+       if (!enter_repo(buf, 0)) {
+               packet_write(1, "NACK not a git archive %s\n", dir);
+               packet_flush(1);
+               return 1;
+       }
+
+       len = packet_read_line(0, buf, sizeof(buf));
+       if (len < 5 || strncmp("want ", buf, 5))
+               return nak("expected want");
+       if (buf[len-1] == '\n')
+               buf[--len] = 0;
+       if (get_sha1(buf + 5, sha1))
+               return nak("expected sha1");
+        strcpy(hex, sha1_to_hex(sha1));
+
+       len = packet_read_line(0, buf, sizeof(buf));
+       if (len) {
+               if (len < 5 || strncmp("base ", buf, 5))
+                       return nak("expected (optional) base");
+               if (buf[len-1] == '\n')
+                       buf[--len] = 0;
+               base = strdup(buf + 5);
+               len = packet_read_line(0, buf, sizeof(buf));
+       }
+       if (len)
+               return nak("expected flush");
+
+       packet_write(1, "ACK\n");
+       packet_flush(1);
+
+       ac = 0;
+       av[ac++] = "tar-tree";
+       av[ac++] = hex;
+       if (base)
+               av[ac++] = base;
+       av[ac++] = NULL;
+       execv_git_cmd(av);
+       /* should it return that is an error */
+       return 1;
+}