fastboot/engine.cpp - third_party/android/platform/system/core - Git at Google

 /*
  * 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 "fastboot.h"
 #include "fs.h"

 #include <errno.h>
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <unistd.h>

 #define OP_DOWNLOAD   1
 #define OP_COMMAND    2
 #define OP_QUERY      3
 #define OP_NOTICE     4
 #define OP_DOWNLOAD_SPARSE 5
 #define OP_WAIT_FOR_DISCONNECT 6
 #define OP_DOWNLOAD_FD 7
 #define OP_UPLOAD 8

 typedef struct Action Action;

 #define CMD_SIZE 64

 struct Action {
     unsigned op;
     Action* next;

     char cmd[CMD_SIZE];
     const char* prod;
     void* data;
     int fd;

     // The protocol only supports 32-bit sizes, so you'll have to break
     // anything larger into chunks.
     uint32_t size;

     const char *msg;
     int (*func)(Action* a, int status, const char* resp);

     double start;
 };

 static Action *action_list = 0;
 static Action *action_last = 0;


 bool fb_getvar(Transport* transport, const std::string& key, std::string* value) {
     std::string cmd = "getvar:";
     cmd += key;

     char buf[FB_RESPONSE_SZ + 1];
     memset(buf, 0, sizeof(buf));
     if (fb_command_response(transport, cmd.c_str(), buf)) {
       return false;
     }
     *value = buf;
     return true;
 }

 static int cb_default(Action* a, int status, const char* resp) {
     if (status) {
         fprintf(stderr,"FAILED (%s)\n", resp);
     } else {
         double split = now();
         fprintf(stderr,"OKAY [%7.3fs]\n", (split - a->start));
         a->start = split;
     }
     return status;
 }

 static Action *queue_action(unsigned op, const char *fmt, ...)
 {
     va_list ap;
     size_t cmdsize;

     Action* a = reinterpret_cast<Action*>(calloc(1, sizeof(Action)));
     if (a == nullptr) die("out of memory");

     va_start(ap, fmt);
     cmdsize = vsnprintf(a->cmd, sizeof(a->cmd), fmt, ap);
     va_end(ap);

     if (cmdsize >= sizeof(a->cmd)) {
         free(a);
         die("Command length (%d) exceeds maximum size (%d)", cmdsize, sizeof(a->cmd));
     }

     if (action_last) {
         action_last->next = a;
     } else {
         action_list = a;
     }
     action_last = a;
     a->op = op;
     a->func = cb_default;

     a->start = -1;

     return a;
 }

 void fb_set_active(const char *slot)
 {
     Action *a;
     a = queue_action(OP_COMMAND, "set_active:%s", slot);
     a->msg = mkmsg("Setting current slot to '%s'", slot);
 }

 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_fd(const char *ptn, int fd, uint32_t sz)
 {
     Action *a;

     a = queue_action(OP_DOWNLOAD_FD, "");
     a->fd = fd;
     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);
 }

 void fb_queue_flash(const char *ptn, void *data, uint32_t 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);
 }

 void fb_queue_flash_sparse(const char* ptn, struct sparse_file* s, uint32_t sz, size_t current,
                            size_t total) {
     Action *a;

     a = queue_action(OP_DOWNLOAD_SPARSE, "");
     a->data = s;
     a->size = 0;
     a->msg = mkmsg("sending sparse '%s' %zu/%zu (%d KB)", ptn, current, total, sz / 1024);

     a = queue_action(OP_COMMAND, "flash:%s", ptn);
     a->msg = mkmsg("writing '%s' %zu/%zu", ptn, current, total);
 }

 static int match(const char* str, const char** value, unsigned count) {
     unsigned n;

     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, const char* resp, int invert)
 {
     const char** value = reinterpret_cast<const char**>(a->data);
     unsigned count = a->size;
     unsigned n;
     int yes;

     if (status) {
         fprintf(stderr,"FAILED (%s)\n", resp);
         return status;
     }

     if (a->prod) {
         if (strcmp(a->prod, cur_product) != 0) {
             double split = now();
             fprintf(stderr,"IGNORE, product is %s required only for %s [%7.3fs]\n",
                     cur_product, a->prod, (split - a->start));
             a->start = split;
             return 0;
         }
     }

     yes = match(resp, value, count);
     if (invert) yes = !yes;

     if (yes) {
         double split = now();
         fprintf(stderr,"OKAY [%7.3fs]\n", (split - a->start));
         a->start = split;
         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, const char* resp) {
     return cb_check(a, status, resp, 0);
 }

 static int cb_reject(Action* a, int status, const char* resp) {
     return cb_check(a, status, resp, 1);
 }

 static char* xstrdup(const char* s) {
     char* result = strdup(s);
     if (!result) die("out of memory");
     return result;
 }

 void fb_queue_require(const char *prod, const char *var,
                       bool invert, size_t nvalues, const char **value)
 {
     Action *a;
     a = queue_action(OP_QUERY, "getvar:%s", var);
     a->prod = prod;
     a->data = value;
     a->size = nvalues;
     a->msg = mkmsg("checking %s", var);
     a->func = invert ? cb_reject : cb_require;
     if (a->data == nullptr) die("out of memory");
 }

 static int cb_display(Action* a, int status, const char* resp) {
     if (status) {
         fprintf(stderr, "%s FAILED (%s)\n", a->cmd, resp);
         return status;
     }
     fprintf(stderr, "%s: %s\n", static_cast<const char*>(a->data), resp);
     free(static_cast<char*>(a->data));
     return 0;
 }

 void fb_queue_display(const char* var, const char* prettyname) {
     Action* a = queue_action(OP_QUERY, "getvar:%s", var);
     a->data = xstrdup(prettyname);
     a->func = cb_display;
 }

 static int cb_save(Action* a, int status, const char* resp) {
     if (status) {
         fprintf(stderr, "%s FAILED (%s)\n", a->cmd, resp);
         return status;
     }
     strncpy(reinterpret_cast<char*>(a->data), resp, a->size);
     return 0;
 }

 void fb_queue_query_save(const char* var, char* dest, uint32_t dest_size) {
     Action* a = queue_action(OP_QUERY, "getvar:%s", var);
     a->data = dest;
     a->size = dest_size;
     a->func = cb_save;
 }

 static int cb_do_nothing(Action*, int , const char*) {
     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, uint32_t size)
 {
     Action *a = queue_action(OP_DOWNLOAD, "");
     a->data = data;
     a->size = size;
     a->msg = mkmsg("downloading '%s'", name);
 }

 void fb_queue_download_fd(const char *name, int fd, uint32_t sz)
 {
     Action *a;
     a = queue_action(OP_DOWNLOAD_FD, "");
     a->fd = fd;
     a->size = sz;
     a->msg = mkmsg("sending '%s' (%d KB)", name, sz / 1024);
 }

 void fb_queue_upload(const char* outfile) {
     Action* a = queue_action(OP_UPLOAD, "");
     a->data = xstrdup(outfile);
     a->msg = mkmsg("uploading '%s'", outfile);
 }

 void fb_queue_notice(const char* notice) {
     Action *a = queue_action(OP_NOTICE, "");
     a->data = (void*) notice;
 }

 void fb_queue_wait_for_disconnect(void)
 {
     queue_action(OP_WAIT_FOR_DISCONNECT, "");
 }

 int64_t fb_execute_queue(Transport* transport)
 {
     Action *a;
     char resp[FB_RESPONSE_SZ+1];
     int64_t status = 0;

     a = action_list;
     if (!a)
         return status;
     resp[FB_RESPONSE_SZ] = 0;

     double start = -1;
     for (a = action_list; a; a = a->next) {
         a->start = now();
         if (start < 0) start = a->start;
         if (a->msg) {
             // fprintf(stderr,"%30s... ",a->msg);
             fprintf(stderr,"%s...\n",a->msg);
         }
         if (a->op == OP_DOWNLOAD) {
             status = fb_download_data(transport, a->data, a->size);
             status = a->func(a, status, status ? fb_get_error().c_str() : "");
             if (status) break;
         } else if (a->op == OP_DOWNLOAD_FD) {
             status = fb_download_data_fd(transport, a->fd, a->size);
             status = a->func(a, status, status ? fb_get_error().c_str() : "");
             if (status) break;
         } else if (a->op == OP_COMMAND) {
             status = fb_command(transport, a->cmd);
             status = a->func(a, status, status ? fb_get_error().c_str() : "");
             if (status) break;
         } else if (a->op == OP_QUERY) {
             status = fb_command_response(transport, a->cmd, resp);
             status = a->func(a, status, status ? fb_get_error().c_str() : resp);
             if (status) break;
         } else if (a->op == OP_NOTICE) {
             fprintf(stderr,"%s\n",(char*)a->data);
         } else if (a->op == OP_DOWNLOAD_SPARSE) {
             status = fb_download_data_sparse(transport, reinterpret_cast<sparse_file*>(a->data));
             status = a->func(a, status, status ? fb_get_error().c_str() : "");
             if (status) break;
         } else if (a->op == OP_WAIT_FOR_DISCONNECT) {
             transport->WaitForDisconnect();
         } else if (a->op == OP_UPLOAD) {
             status = fb_upload_data(transport, reinterpret_cast<char*>(a->data));
             status = a->func(a, status, status ? fb_get_error().c_str() : "");
         } else {
             die("bogus action");
         }
     }

     fprintf(stderr,"finished. total time: %.3fs\n", (now() - start));
     return status;
 }
	/*
	* 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 "fastboot.h"
	#include "fs.h"

	#include <errno.h>
	#include <stdarg.h>
	#include <stdio.h>
	#include <stdlib.h>
	#include <string.h>
	#include <sys/stat.h>
	#include <sys/types.h>
	#include <unistd.h>

	#define OP_DOWNLOAD 1
	#define OP_COMMAND 2
	#define OP_QUERY 3
	#define OP_NOTICE 4
	#define OP_DOWNLOAD_SPARSE 5
	#define OP_WAIT_FOR_DISCONNECT 6
	#define OP_DOWNLOAD_FD 7
	#define OP_UPLOAD 8

	typedef struct Action Action;

	#define CMD_SIZE 64

	struct Action {
	unsigned op;
	Action* next;

	char cmd[CMD_SIZE];
	const char* prod;
	void* data;
	int fd;

	// The protocol only supports 32-bit sizes, so you'll have to break
	// anything larger into chunks.
	uint32_t size;

	const char *msg;
	int (func)(Action a, int status, const char* resp);

	double start;
	};

	static Action *action_list = 0;
	static Action *action_last = 0;




	bool fb_getvar(Transport* transport, const std::string& key, std::string* value) {
	std::string cmd = "getvar:";
	cmd += key;

	char buf[FB_RESPONSE_SZ + 1];
	memset(buf, 0, sizeof(buf));
	if (fb_command_response(transport, cmd.c_str(), buf)) {
	return false;
	}
	*value = buf;
	return true;
	}

	static int cb_default(Action* a, int status, const char* resp) {
	if (status) {
	fprintf(stderr,"FAILED (%s)\n", resp);
	} else {
	double split = now();
	fprintf(stderr,"OKAY [%7.3fs]\n", (split - a->start));
	a->start = split;
	}
	return status;
	}

	static Action queue_action(unsigned op, const char fmt, ...)
	{
	va_list ap;
	size_t cmdsize;

	Action* a = reinterpret_cast<Action*>(calloc(1, sizeof(Action)));
	if (a == nullptr) die("out of memory");

	va_start(ap, fmt);
	cmdsize = vsnprintf(a->cmd, sizeof(a->cmd), fmt, ap);
	va_end(ap);

	if (cmdsize >= sizeof(a->cmd)) {
	free(a);
	die("Command length (%d) exceeds maximum size (%d)", cmdsize, sizeof(a->cmd));
	}

	if (action_last) {
	action_last->next = a;
	} else {
	action_list = a;
	}
	action_last = a;
	a->op = op;
	a->func = cb_default;

	a->start = -1;

	return a;
	}

	void fb_set_active(const char *slot)
	{
	Action *a;
	a = queue_action(OP_COMMAND, "set_active:%s", slot);
	a->msg = mkmsg("Setting current slot to '%s'", slot);
	}

	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_fd(const char *ptn, int fd, uint32_t sz)
	{
	Action *a;

	a = queue_action(OP_DOWNLOAD_FD, "");
	a->fd = fd;
	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);
	}

	void fb_queue_flash(const char ptn, void data, uint32_t 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);
	}

	void fb_queue_flash_sparse(const char* ptn, struct sparse_file* s, uint32_t sz, size_t current,
	size_t total) {
	Action *a;

	a = queue_action(OP_DOWNLOAD_SPARSE, "");
	a->data = s;
	a->size = 0;
	a->msg = mkmsg("sending sparse '%s' %zu/%zu (%d KB)", ptn, current, total, sz / 1024);

	a = queue_action(OP_COMMAND, "flash:%s", ptn);
	a->msg = mkmsg("writing '%s' %zu/%zu", ptn, current, total);
	}

	static int match(const char* str, const char** value, unsigned count) {
	unsigned n;

	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, const char* resp, int invert)
	{
	const char value = reinterpret_cast<const char>(a->data);
	unsigned count = a->size;
	unsigned n;
	int yes;

	if (status) {
	fprintf(stderr,"FAILED (%s)\n", resp);
	return status;
	}

	if (a->prod) {
	if (strcmp(a->prod, cur_product) != 0) {
	double split = now();
	fprintf(stderr,"IGNORE, product is %s required only for %s [%7.3fs]\n",
	cur_product, a->prod, (split - a->start));
	a->start = split;
	return 0;
	}
	}

	yes = match(resp, value, count);
	if (invert) yes = !yes;

	if (yes) {
	double split = now();
	fprintf(stderr,"OKAY [%7.3fs]\n", (split - a->start));
	a->start = split;
	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(Actiona, int status, const char resp) {
	return cb_check(a, status, resp, 0);
	}

	static int cb_reject(Action* a, int status, const char* resp) {
	return cb_check(a, status, resp, 1);
	}

	static char* xstrdup(const char* s) {
	char* result = strdup(s);
	if (!result) die("out of memory");
	return result;
	}

	void fb_queue_require(const char prod, const char var,
	bool invert, size_t nvalues, const char **value)
	{
	Action *a;
	a = queue_action(OP_QUERY, "getvar:%s", var);
	a->prod = prod;
	a->data = value;
	a->size = nvalues;
	a->msg = mkmsg("checking %s", var);
	a->func = invert ? cb_reject : cb_require;
	if (a->data == nullptr) die("out of memory");
	}

	static int cb_display(Action* a, int status, const char* resp) {
	if (status) {
	fprintf(stderr, "%s FAILED (%s)\n", a->cmd, resp);
	return status;
	}
	fprintf(stderr, "%s: %s\n", static_cast<const char*>(a->data), resp);
	free(static_cast<char*>(a->data));
	return 0;
	}

	void fb_queue_display(const char* var, const char* prettyname) {
	Action* a = queue_action(OP_QUERY, "getvar:%s", var);
	a->data = xstrdup(prettyname);
	a->func = cb_display;
	}

	static int cb_save(Action* a, int status, const char* resp) {
	if (status) {
	fprintf(stderr, "%s FAILED (%s)\n", a->cmd, resp);
	return status;
	}
	strncpy(reinterpret_cast<char*>(a->data), resp, a->size);
	return 0;
	}

	void fb_queue_query_save(const char* var, char* dest, uint32_t dest_size) {
	Action* a = queue_action(OP_QUERY, "getvar:%s", var);
	a->data = dest;
	a->size = dest_size;
	a->func = cb_save;
	}

	static int cb_do_nothing(Action, int , const char) {
	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, uint32_t size)
	{
	Action *a = queue_action(OP_DOWNLOAD, "");
	a->data = data;
	a->size = size;
	a->msg = mkmsg("downloading '%s'", name);
	}

	void fb_queue_download_fd(const char *name, int fd, uint32_t sz)
	{
	Action *a;
	a = queue_action(OP_DOWNLOAD_FD, "");
	a->fd = fd;
	a->size = sz;
	a->msg = mkmsg("sending '%s' (%d KB)", name, sz / 1024);
	}

	void fb_queue_upload(const char* outfile) {
	Action* a = queue_action(OP_UPLOAD, "");
	a->data = xstrdup(outfile);
	a->msg = mkmsg("uploading '%s'", outfile);
	}

	void fb_queue_notice(const char* notice) {
	Action *a = queue_action(OP_NOTICE, "");
	a->data = (void*) notice;
	}

	void fb_queue_wait_for_disconnect(void)
	{
	queue_action(OP_WAIT_FOR_DISCONNECT, "");
	}

	int64_t fb_execute_queue(Transport* transport)
	{
	Action *a;
	char resp[FB_RESPONSE_SZ+1];
	int64_t status = 0;

	a = action_list;
	if (!a)
	return status;
	resp[FB_RESPONSE_SZ] = 0;

	double start = -1;
	for (a = action_list; a; a = a->next) {
	a->start = now();
	if (start < 0) start = a->start;
	if (a->msg) {
	// fprintf(stderr,"%30s... ",a->msg);
	fprintf(stderr,"%s...\n",a->msg);
	}
	if (a->op == OP_DOWNLOAD) {
	status = fb_download_data(transport, a->data, a->size);
	status = a->func(a, status, status ? fb_get_error().c_str() : "");
	if (status) break;
	} else if (a->op == OP_DOWNLOAD_FD) {
	status = fb_download_data_fd(transport, a->fd, a->size);
	status = a->func(a, status, status ? fb_get_error().c_str() : "");
	if (status) break;
	} else if (a->op == OP_COMMAND) {
	status = fb_command(transport, a->cmd);
	status = a->func(a, status, status ? fb_get_error().c_str() : "");
	if (status) break;
	} else if (a->op == OP_QUERY) {
	status = fb_command_response(transport, a->cmd, resp);
	status = a->func(a, status, status ? fb_get_error().c_str() : resp);
	if (status) break;
	} else if (a->op == OP_NOTICE) {
	fprintf(stderr,"%s\n",(char*)a->data);
	} else if (a->op == OP_DOWNLOAD_SPARSE) {
	status = fb_download_data_sparse(transport, reinterpret_cast<sparse_file*>(a->data));
	status = a->func(a, status, status ? fb_get_error().c_str() : "");
	if (status) break;
	} else if (a->op == OP_WAIT_FOR_DISCONNECT) {
	transport->WaitForDisconnect();
	} else if (a->op == OP_UPLOAD) {
	status = fb_upload_data(transport, reinterpret_cast<char*>(a->data));
	status = a->func(a, status, status ? fb_get_error().c_str() : "");
	} else {
	die("bogus action");
	}
	}

	fprintf(stderr,"finished. total time: %.3fs\n", (now() - start));
	return status;
	}