Initial Contribution
diff --git a/fastboot/engine.c b/fastboot/engine.c
new file mode 100644
index 0000000..4c7e197
--- /dev/null
+++ b/fastboot/engine.c
@@ -0,0 +1,289 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+
+#include "fastboot.h"
+
+char *mkmsg(const char *fmt, ...)
+{
+ char buf[256];
+ char *s;
+ va_list ap;
+
+ va_start(ap, fmt);
+ vsprintf(buf, fmt, ap);
+ va_end(ap);
+
+ s = strdup(buf);
+ if (s == 0) die("out of memory");
+ return s;
+}
+
+#define OP_DOWNLOAD 1
+#define OP_COMMAND 2
+#define OP_QUERY 3
+#define OP_NOTICE 4
+
+typedef struct Action Action;
+
+struct Action
+{
+ unsigned op;
+ Action *next;
+
+ char cmd[64];
+ void *data;
+ unsigned size;
+
+ const char *msg;
+ int (*func)(Action *a, int status, char *resp);
+};
+
+static Action *action_list = 0;
+static Action *action_last = 0;
+
+static int cb_default(Action *a, int status, char *resp)
+{
+ if (status) {
+ fprintf(stderr,"FAILED (%s)\n", resp);
+ } else {
+ fprintf(stderr,"OKAY\n");
+ }
+ return status;
+}
+
+static Action *queue_action(unsigned op, const char *fmt, ...)
+{
+ Action *a;
+ va_list ap;
+
+ a = calloc(1, sizeof(Action));
+ if (a == 0) die("out of memory");
+
+ va_start(ap, fmt);
+ vsprintf(a->cmd, fmt, ap);
+ va_end(ap);
+
+ if (action_last) {
+ action_last->next = a;
+ } else {
+ action_list = a;
+ }
+ action_last = a;
+ a->op = op;
+ a->func = cb_default;
+ return a;
+}
+
+void fb_queue_erase(const char *ptn)
+{
+ Action *a;
+ a = queue_action(OP_COMMAND, "erase:%s", ptn);
+ a->msg = mkmsg("erasing '%s'", ptn);
+}
+
+void fb_queue_flash(const char *ptn, void *data, unsigned sz)
+{
+ Action *a;
+
+ a = queue_action(OP_DOWNLOAD, "");
+ a->data = data;
+ a->size = sz;
+ a->msg = mkmsg("sending '%s' (%d KB)", ptn, sz / 1024);
+
+ a = queue_action(OP_COMMAND, "flash:%s", ptn);
+ a->msg = mkmsg("writing '%s'", ptn);
+}
+
+static int match(char *str, const char **value, unsigned count)
+{
+ const char *val;
+ unsigned n;
+ int len;
+
+ for (n = 0; n < count; n++) {
+ const char *val = value[n];
+ int len = strlen(val);
+ int match;
+
+ if ((len > 1) && (val[len-1] == '*')) {
+ len--;
+ match = !strncmp(val, str, len);
+ } else {
+ match = !strcmp(val, str);
+ }
+
+ if (match) return 1;
+ }
+
+ return 0;
+}
+
+
+
+static int cb_check(Action *a, int status, char *resp, int invert)
+{
+ const char **value = a->data;
+ unsigned count = a->size;
+ unsigned n;
+ int yes;
+
+ if (status) {
+ fprintf(stderr,"FAILED (%s)\n", resp);
+ return status;
+ }
+
+ yes = match(resp, value, count);
+ if (invert) yes = !yes;
+
+ if (yes) {
+ fprintf(stderr,"OKAY\n");
+ return 0;
+ }
+
+ fprintf(stderr,"FAILED\n\n");
+ fprintf(stderr,"Device %s is '%s'.\n", a->cmd + 7, resp);
+ fprintf(stderr,"Update %s '%s'",
+ invert ? "rejects" : "requires", value[0]);
+ for (n = 1; n < count; n++) {
+ fprintf(stderr," or '%s'", value[n]);
+ }
+ fprintf(stderr,".\n\n");
+ return -1;
+}
+
+static int cb_require(Action *a, int status, char *resp)
+{
+ return cb_check(a, status, resp, 0);
+}
+
+static int cb_reject(Action *a, int status, char *resp)
+{
+ return cb_check(a, status, resp, 1);
+}
+
+void fb_queue_require(const char *var, int invert, unsigned nvalues, const char **value)
+{
+ Action *a;
+ a = queue_action(OP_QUERY, "getvar:%s", var);
+ a->data = value;
+ a->size = nvalues;
+ a->msg = mkmsg("checking %s", var);
+ a->func = invert ? cb_reject : cb_require;
+ if (a->data == 0) die("out of memory");
+}
+
+static int cb_display(Action *a, int status, char *resp)
+{
+ if (status) {
+ fprintf(stderr, "%s FAILED (%s)\n", a->cmd, resp);
+ return status;
+ }
+ fprintf(stderr, "%s: %s\n", (char*) a->data, resp);
+ return 0;
+}
+
+void fb_queue_display(const char *var, const char *prettyname)
+{
+ Action *a;
+ a = queue_action(OP_QUERY, "getvar:%s", var);
+ a->data = strdup(prettyname);
+ if (a->data == 0) die("out of memory");
+ a->func = cb_display;
+}
+
+static int cb_do_nothing(Action *a, int status, char *resp)
+{
+ fprintf(stderr,"\n");
+ return 0;
+}
+
+void fb_queue_reboot(void)
+{
+ Action *a = queue_action(OP_COMMAND, "reboot");
+ a->func = cb_do_nothing;
+ a->msg = "rebooting";
+}
+
+void fb_queue_command(const char *cmd, const char *msg)
+{
+ Action *a = queue_action(OP_COMMAND, cmd);
+ a->msg = msg;
+}
+
+void fb_queue_download(const char *name, void *data, unsigned size)
+{
+ Action *a = queue_action(OP_DOWNLOAD, "");
+ a->data = data;
+ a->size = size;
+ a->msg = mkmsg("downloading '%s'", name);
+}
+
+void fb_queue_notice(const char *notice)
+{
+ Action *a = queue_action(OP_NOTICE, "");
+ a->data = (void*) notice;
+}
+
+void fb_execute_queue(usb_handle *usb)
+{
+ Action *a;
+ char resp[FB_RESPONSE_SZ+1];
+ int status;
+
+ a = action_list;
+ resp[FB_RESPONSE_SZ] = 0;
+
+ for (a = action_list; a; a = a->next) {
+ if (a->msg) {
+ fprintf(stderr,"%s... ",a->msg);
+ }
+ if (a->op == OP_DOWNLOAD) {
+ status = fb_download_data(usb, a->data, a->size);
+ status = a->func(a, status, status ? fb_get_error() : "");
+ if (status) break;
+ } else if (a->op == OP_COMMAND) {
+ status = fb_command(usb, a->cmd);
+ status = a->func(a, status, status ? fb_get_error() : "");
+ if (status) break;
+ } else if (a->op == OP_QUERY) {
+ status = fb_command_response(usb, a->cmd, resp);
+ status = a->func(a, status, status ? fb_get_error() : resp);
+ if (status) break;
+ } else if (a->op == OP_NOTICE) {
+ fprintf(stderr,"%s\n",(char*)a->data);
+ } else {
+ die("bogus action");
+ }
+ }
+}
+