1 files changed, 141 insertions, 0 deletions
diff --git a/builtin/upload-archive.c b/builtin/upload-archive.c
new file mode 100644
index 0000000000..c57e8bd8c8
--- /dev/null
+++ b/builtin/upload-archive.c
@@ -0,0 +1,141 @@
+/*
+ * Copyright (c) 2006 Franck Bui-Huu
+ */
+#include "cache.h"
+#include "builtin.h"
+#include "archive.h"
+#include "pkt-line.h"
+#include "sideband.h"
+#include "run-command.h"
+
+static const char upload_archive_usage[] =
+	"git upload-archive <repo>";
+
+static const char deadchild[] =
+"git upload-archive: archiver died with error";
+
+static const char lostchild[] =
+"git upload-archive: archiver process was lost";
+
+#define MAX_ARGS (64)
+
+static void prepare_argv(const char **sent_argv, const char **argv)
+{
+	const char *arg_cmd = "argument ";
+	char *p, buf[4096];
+	int sent_argc;
+	int len;
+
+	/* put received options in sent_argv[] */
+	sent_argc = 2;
+	sent_argv[0] = "archive";
+	sent_argv[1] = "--remote-request";
+	for (p = buf;;) {
+		/* This will die if not enough free space in buf */
+		len = packet_read_line(0, p, (buf + sizeof buf) - p);
+		if (len == 0)
+			break;	/* got a flush */
+		if (sent_argc > MAX_ARGS - 2)
+			die("Too many options (>%d)", MAX_ARGS - 2);
+
+		if (p[len-1] == '\n') {
+			p[--len] = 0;
+		}
+		if (len < strlen(arg_cmd) ||
+		    strncmp(arg_cmd, p, strlen(arg_cmd)))
+			die("'argument' token or flush expected");
+
+		len -= strlen(arg_cmd);
+		memmove(p, p + strlen(arg_cmd), len);
+		sent_argv[sent_argc++] = p;
+		p += len;
+		*p++ = 0;
+	}
+	sent_argv[sent_argc] = NULL;
+}
+
+__attribute__((format (printf, 1, 2)))
+static void error_clnt(const char *fmt, ...)
+{
+	char buf[1024];
+	va_list params;
+	int len;
+
+	va_start(params, fmt);
+	len = vsprintf(buf, fmt, params);
+	va_end(params);
+	send_sideband(1, 3, buf, len, LARGE_PACKET_MAX);
+	die("sent error to the client: %s", buf);
+}
+
+static ssize_t process_input(int child_fd, int band)
+{
+	char buf[16384];
+	ssize_t sz = read(child_fd, buf, sizeof(buf));
+	if (sz < 0) {
+		if (errno != EAGAIN && errno != EINTR)
+			error_clnt("read error: %s\n", strerror(errno));
+		return sz;
+	}
+	send_sideband(1, band, buf, sz, LARGE_PACKET_MAX);
+	return sz;
+}
+
+int cmd_upload_archive(int argc, const char **argv, const char *prefix)
+{
+	const char *sent_argv[MAX_ARGS];
+	struct child_process cld = { sent_argv };
+	cld.out = cld.err = -1;
+	cld.git_cmd = 1;
+
+	if (argc != 2)
+		usage(upload_archive_usage);
+
+	if (!enter_repo(argv[1], 0))
+		die("'%s' does not appear to be a git repository", argv[1]);
+
+	prepare_argv(sent_argv, argv);
+	if (start_command(&cld)) {
+		int err = errno;
+		packet_write(1, "NACK fork failed on the remote side\n");
+		die("upload-archive: %s", strerror(err));
+	}
+
+	/* parent - read from child, multiplex and send out to fd#1 */
+	packet_write(1, "ACK\n");
+	packet_flush(1);
+
+	while (1) {
+		struct pollfd pfd[2];
+		int status;
+
+		pfd[0].fd = cld.out;
+		pfd[0].events = POLLIN;
+		pfd[1].fd = cld.err;
+		pfd[1].events = POLLIN;
+		if (poll(pfd, 2, -1) < 0) {
+			if (errno != EINTR) {
+				error("poll failed resuming: %s",
+				      strerror(errno));
+				sleep(1);
+			}
+			continue;
+		}
+		if (pfd[1].revents & POLLIN)
+			/* Status stream ready */
+			if (process_input(pfd[1].fd, 2))
+				continue;
+		if (pfd[0].revents & POLLIN)
+			/* Data stream ready */
+			if (process_input(pfd[0].fd, 1))
+				continue;
+
+		if (waitpid(cld.pid, &status, 0) < 0)
+			error_clnt("%s", lostchild);
+		else if (!WIFEXITED(status) || WEXITSTATUS(status) > 0)
+			error_clnt("%s", deadchild);
+		packet_flush(1);
+		break;
+	}
+	return 0;
+}