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auc: add new package

The Attended sysUpgrade CLI is a full-featured client for the
attended-sysupgrade service which works directly on the target device.
It requires libustream-ssl as well as at least the CA certificate
needed to contact the sysupgrade server.

It has only been tested briefly and is by no means ready for
production!

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
lilik-openwrt-22.03
Daniel Golle 7 years ago
parent
commit
95d96a360f
3 changed files with 900 additions and 0 deletions
  1. +32
    -0
      utils/auc/Makefile
  2. +12
    -0
      utils/auc/src/CMakeLists.txt
  3. +856
    -0
      utils/auc/src/auc.c

+ 32
- 0
utils/auc/Makefile View File

@ -0,0 +1,32 @@
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
include $(TOPDIR)/rules.mk
PKG_NAME:=auc
PKG_VERSION:=0.0.1
PKG_RELEASE=1
PKG_LICENSE:=GPL-3.0
include $(INCLUDE_DIR)/package.mk
include $(INCLUDE_DIR)/cmake.mk
define Package/auc
SECTION:=base
CATEGORY:=Base system
TITLE:=attended sysupgrade (CLI version)
DEPENDS:=+attendedsysupgrade-common +libblobmsg-json +libubox +libubus \
+libuci +libuclient +rpcd-mod-rpcsys
endef
define Package/auc/description
CLI client for attended-sysupgrade
endef
define Package/auc/install
$(INSTALL_DIR) $(1)/usr/sbin
$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/sbin/auc $(1)/usr/sbin/
endef
$(eval $(call BuildPackage,auc))

+ 12
- 0
utils/auc/src/CMakeLists.txt View File

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cmake_minimum_required(VERSION 2.6)
PROJECT(auc C)
ADD_DEFINITIONS(-Os -ggdb -Wall --std=gnu99 -Wmissing-declarations)
SET(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "")
find_library(json NAMES json-c json)
ADD_EXECUTABLE(auc auc.c)
TARGET_LINK_LIBRARIES(auc uci ubox ubus uclient blobmsg_json ${json})
INSTALL(TARGETS auc RUNTIME DESTINATION sbin)

+ 856
- 0
utils/auc/src/auc.c View File

@ -0,0 +1,856 @@
/*
* auc - attendedsysUpgrade CLI
* Copyright (C) 2017 Daniel Golle <daniel@makrotopia.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3
* as published by the Free Software Foundation
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#define _GNU_SOURCE
#include <fcntl.h>
#include <dlfcn.h>
#include <glob.h>
#include <stdio.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <unistd.h>
#include <uci.h>
#include <uci_blob.h>
#include <json-c/json.h>
#include <libubox/ulog.h>
#include <libubox/list.h>
#include <libubox/vlist.h>
#include <libubox/blobmsg_json.h>
#include <libubox/avl-cmp.h>
#include <libubox/uclient.h>
#include <libubox/uclient-utils.h>
#include <libubus.h>
#define REQ_TIMEOUT 15
#define APIOBJ_CHECK "api/upgrade-check"
#define APIOBJ_REQUEST "api/upgrade-request"
static const char *user_agent = "auc";
static char *serverurl;
static struct ustream_ssl_ctx *ssl_ctx;
static const struct ustream_ssl_ops *ssl_ops;
static off_t out_bytes;
static off_t out_len;
static off_t out_offset;
static bool cur_resume;
static int output_fd = -1;
static int retry, imagebuilder, building;
static char *board_name = NULL;
static char *target = NULL, *subtarget = NULL;
static char *distribution = NULL, *version = NULL, *revision = NULL;
static int uptodate;
static char *filename = NULL;
/*
* policy for ubus call system board
* see procd/system.c
*/
enum {
BOARD_KERNEL,
BOARD_HOSTNAME,
BOARD_SYSTEM,
BOARD_MODEL,
BOARD_BOARD_NAME,
BOARD_RELEASE,
__BOARD_MAX,
};
static const struct blobmsg_policy board_policy[__BOARD_MAX] = {
[BOARD_KERNEL] = { .name = "kernel", .type = BLOBMSG_TYPE_STRING },
[BOARD_HOSTNAME] = { .name = "hostname", .type = BLOBMSG_TYPE_STRING },
[BOARD_SYSTEM] = { .name = "system", .type = BLOBMSG_TYPE_STRING },
[BOARD_MODEL] = { .name = "model", .type = BLOBMSG_TYPE_STRING },
[BOARD_BOARD_NAME] = { .name = "board_name", .type = BLOBMSG_TYPE_STRING },
[BOARD_RELEASE] = { .name = "release", .type = BLOBMSG_TYPE_TABLE },
};
/*
* policy for release information in system board reply
* see procd/system.c
*/
enum {
RELEASE_DISTRIBUTION,
RELEASE_VERSION,
RELEASE_REVISION,
RELEASE_CODENAME,
RELEASE_TARGET,
RELEASE_DESCRIPTION,
__RELEASE_MAX,
};
static const struct blobmsg_policy release_policy[__RELEASE_MAX] = {
[RELEASE_DISTRIBUTION] = { .name = "distribution", .type = BLOBMSG_TYPE_STRING },
[RELEASE_VERSION] = { .name = "version", .type = BLOBMSG_TYPE_STRING },
[RELEASE_REVISION] = { .name = "revision", .type = BLOBMSG_TYPE_STRING },
[RELEASE_CODENAME] = { .name = "codename", .type = BLOBMSG_TYPE_STRING },
[RELEASE_TARGET] = { .name = "target", .type = BLOBMSG_TYPE_STRING },
[RELEASE_DESCRIPTION] = { .name = "description", .type = BLOBMSG_TYPE_STRING },
};
/*
* policy for packagelist
* see rpcd/sys.c
*/
enum {
PACKAGELIST_PACKAGES,
__PACKAGELIST_MAX,
};
static const struct blobmsg_policy packagelist_policy[__PACKAGELIST_MAX] = {
[PACKAGELIST_PACKAGES] = { .name = "packages", .type = BLOBMSG_TYPE_TABLE },
};
/*
* policy for upgrade_test
* see rpcd/sys.c
*/
enum {
UPGTEST_CODE,
UPGTEST_STDOUT,
__UPGTEST_MAX,
};
static const struct blobmsg_policy upgtest_policy[__UPGTEST_MAX] = {
[UPGTEST_CODE] = { .name = "code", .type = BLOBMSG_TYPE_INT32 },
[UPGTEST_STDOUT] = { .name = "stdout", .type = BLOBMSG_TYPE_STRING },
};
/*
* policy to extract version from upgrade-check response
*/
enum {
CHECK_VERSION,
__CHECK_MAX,
};
static const struct blobmsg_policy check_policy[__CHECK_MAX] = {
[CHECK_VERSION] = { .name = "version", .type = BLOBMSG_TYPE_STRING },
};
/*
* policy for upgrade-request response
* it can be either only a queue position or the download information
* for the ready image.
*/
enum {
IMAGE_QUEUE,
IMAGE_FILESIZE,
IMAGE_URL,
IMAGE_CHECKSUM,
IMAGE_FILES,
IMAGE_SYSUPGRADE,
__IMAGE_MAX,
};
static const struct blobmsg_policy image_policy[__IMAGE_MAX] = {
[IMAGE_QUEUE] = { .name = "queue", .type = BLOBMSG_TYPE_INT32 },
[IMAGE_FILESIZE] = { .name = "filesize", .type = BLOBMSG_TYPE_INT32 },
[IMAGE_URL] = { .name = "url", .type = BLOBMSG_TYPE_STRING },
[IMAGE_CHECKSUM] = { .name = "checksum", .type = BLOBMSG_TYPE_STRING },
[IMAGE_FILES] = { .name = "files", .type = BLOBMSG_TYPE_STRING },
[IMAGE_SYSUPGRADE] = { .name = "sysupgrade", .type = BLOBMSG_TYPE_STRING },
};
/*
* load serverurl from UCI
*/
static int load_config() {
static struct uci_context *uci_ctx;
static struct uci_package *uci_attendedsysupgrade;
struct uci_section *uci_server;
uci_ctx = uci_alloc_context();
if (!uci_ctx)
return -1;
uci_ctx->flags &= ~UCI_FLAG_STRICT;
if (uci_load(uci_ctx, "attendedsysupgrade", &uci_attendedsysupgrade) ||
!uci_attendedsysupgrade) {
fprintf(stderr, "Failed to load attendedsysupgrade config\n");
return -1;
}
uci_server = uci_lookup_section(uci_ctx, uci_attendedsysupgrade, "server");
if (!uci_server) {
fprintf(stderr, "Failed to read server url from config\n");
return -1;
}
serverurl = strdup(uci_lookup_option_string(uci_ctx, uci_server, "url"));
uci_free_context(uci_ctx);
return 0;
}
/**
* UBUS response callbacks
*/
/*
* rpc-sys packagelist
* append packagelist response to blobbuf given in req->priv
*/
static void pkglist_cb(struct ubus_request *req, int type, struct blob_attr *msg) {
struct blob_buf *buf = (struct blob_buf *)req->priv;
struct blob_attr *tb[__PACKAGELIST_MAX];
blobmsg_parse(packagelist_policy, __PACKAGELIST_MAX, tb, blob_data(msg), blob_len(msg));
if (!tb[PACKAGELIST_PACKAGES]) {
fprintf(stderr, "No packagelist received\n");
return;
}
blobmsg_add_field(buf, BLOBMSG_TYPE_TABLE, "packages", blobmsg_data(tb[PACKAGELIST_PACKAGES]), blobmsg_data_len(tb[PACKAGELIST_PACKAGES]));
};
/*
* system board
* append append board information to blobbuf given in req->priv
* populate board and release global strings
*/
static void board_cb(struct ubus_request *req, int type, struct blob_attr *msg) {
struct blob_buf *buf = (struct blob_buf *)req->priv;
struct blob_attr *tb[__BOARD_MAX];
struct blob_attr *rel[__RELEASE_MAX];
blobmsg_parse(board_policy, __BOARD_MAX, tb, blob_data(msg), blob_len(msg));
if (!tb[BOARD_BOARD_NAME]) {
fprintf(stderr, "No board name received\n");
return;
}
board_name = strdup(blobmsg_get_string(tb[BOARD_BOARD_NAME]));
if (!tb[BOARD_RELEASE]) {
fprintf(stderr, "No release received\n");
return;
}
blobmsg_parse(release_policy, __RELEASE_MAX, rel,
blobmsg_data(tb[BOARD_RELEASE]), blobmsg_data_len(tb[BOARD_RELEASE]));
if (!rel[RELEASE_TARGET]) {
fprintf(stderr, "No target received\n");
return;
}
target = strdup(blobmsg_get_string(rel[RELEASE_TARGET]));
subtarget = strchr(target, '/');
*subtarget++ = '\0';
distribution = strdup(blobmsg_get_string(rel[RELEASE_DISTRIBUTION]));
version = strdup(blobmsg_get_string(rel[RELEASE_VERSION]));
revision = strdup(blobmsg_get_string(rel[RELEASE_REVISION]));
blobmsg_add_string(buf, "distro", distribution);
blobmsg_add_string(buf, "target", target);
blobmsg_add_string(buf, "subtarget", subtarget);
blobmsg_add_string(buf, "version", version);
}
/*
* rpc-sys upgrade_test
* check if downloaded file is accepted by sysupgrade
*/
static void upgtest_cb(struct ubus_request *req, int type, struct blob_attr *msg) {
int *valid = (int *)req->priv;
struct blob_attr *tb[__UPGTEST_MAX];
blobmsg_parse(upgtest_policy, __UPGTEST_MAX, tb, blob_data(msg), blob_len(msg));
if (!tb[UPGTEST_CODE]) {
fprintf(stderr, "No sysupgrade test return code received\n");
return;
}
*valid = (blobmsg_get_u32(tb[UPGTEST_CODE]) == 0)?1:0;
if (*valid == 0)
fprintf(stderr, "%s", blobmsg_get_string(tb[UPGTEST_STDOUT]));
};
/**
* uclient stuff
*/
static int open_output_file(const char *path, uint64_t resume_offset)
{
char *filename = NULL;
int flags;
int ret;
if (cur_resume)
flags = O_RDWR;
else
flags = O_WRONLY | O_EXCL;
flags |= O_CREAT;
filename = uclient_get_url_filename(path, "firmware.bin");
fprintf(stderr, "Writing to '%s'\n", filename);
ret = open(filename, flags, 0644);
if (ret < 0)
goto free;
if (resume_offset &&
lseek(ret, resume_offset, SEEK_SET) < 0) {
fprintf(stderr, "Failed to seek %"PRIu64" bytes in output file\n", resume_offset);
close(ret);
ret = -1;
goto free;
}
out_offset = resume_offset;
out_bytes += resume_offset;
free:
free(filename);
return ret;
}
static void request_done(struct uclient *cl)
{
uclient_disconnect(cl);
uloop_end();
}
static void header_done_cb(struct uclient *cl)
{
enum {
H_RANGE,
H_LEN,
__H_MAX
};
static const struct blobmsg_policy policy[__H_MAX] = {
[H_RANGE] = { .name = "content-range", .type = BLOBMSG_TYPE_STRING },
[H_LEN] = { .name = "content-length", .type = BLOBMSG_TYPE_STRING },
};
struct blob_attr *tb[__H_MAX];
uint64_t resume_offset = 0, resume_end, resume_size;
static int retries;
if (retries < 10 && uclient_http_redirect(cl)) {
fprintf(stderr, "Redirected to %s on %s\n", cl->url->location, cl->url->host);
retries++;
return;
}
if (cl->status_code == 204 && cur_resume) {
/* Resume attempt failed, try normal download */
cur_resume = false;
//init_request(cl);
return;
}
blobmsg_parse(policy, __H_MAX, tb, blob_data(cl->meta), blob_len(cl->meta));
switch (cl->status_code) {
case 400:
request_done(cl);
break;
case 416:
fprintf(stderr, "File download already fully retrieved; nothing to do.\n");
request_done(cl);
break;
case 422:
fprintf(stderr, "unknown package requested.\n");
request_done(cl);
break;
case 201:
if (!imagebuilder) {
fprintf(stderr, "server is dispatching build job\n");
imagebuilder=1;
}
retry=1;
break;
case 204:
fprintf(stderr, "system is up to date.\n");
uptodate=1;
break;
case 206:
if (!cur_resume) {
if (!building) {
fprintf(stderr, "server is now building image...\n");
building=1;
}
retry=1;
request_done(cl);
break;
}
if (!tb[H_RANGE]) {
fprintf(stderr, "Content-Range header is missing\n");
break;
}
if (sscanf(blobmsg_get_string(tb[H_RANGE]),
"bytes %"PRIu64"-%"PRIu64"/%"PRIu64,
&resume_offset, &resume_end, &resume_size) != 3) {
fprintf(stderr, "Content-Range header is invalid\n");
break;
}
case 200:
if (cl->priv)
break;
if (tb[H_LEN])
out_len = strtoul(blobmsg_get_string(tb[H_LEN]), NULL, 10);
output_fd = open_output_file(cl->url->location, resume_offset);
if (output_fd < 0) {
perror("Cannot open output file");
request_done(cl);
}
break;
default:
fprintf(stderr, "HTTP error %d\n", cl->status_code);
request_done(cl);
break;
}
}
static void read_data_cb(struct uclient *cl)
{
char buf[256];
int len;
json_tokener *tok;
json_object *jsobj;
struct blob_buf *outbuf = (struct blob_buf *)cl->priv;
if (!outbuf) {
while (1) {
len = uclient_read(cl, buf, sizeof(buf));
if (!len)
return;
out_bytes += len;
write(output_fd, buf, len);
}
return;
}
tok = json_tokener_new();
while (1) {
len = uclient_read(cl, buf, sizeof(buf));
if (!len)
break;
out_bytes += len;
jsobj = json_tokener_parse_ex(tok, buf, len);
if (json_tokener_get_error(tok) == json_tokener_continue)
continue;
if (json_tokener_get_error(tok) != json_tokener_success)
break;
if (jsobj)
{
if (json_object_get_type(jsobj) == json_type_object)
blobmsg_add_object(outbuf, jsobj);
json_object_put(jsobj);
break;
}
}
json_tokener_free(tok);
}
static void eof_cb(struct uclient *cl)
{
if (!cl->data_eof && !uptodate) {
fprintf(stderr, "Connection reset prematurely\n");
}
request_done(cl);
}
static void handle_uclient_error(struct uclient *cl, int code)
{
const char *type = "Unknown error";
switch(code) {
case UCLIENT_ERROR_CONNECT:
type = "Connection failed";
break;
case UCLIENT_ERROR_TIMEDOUT:
type = "Connection timed out";
break;
case UCLIENT_ERROR_SSL_INVALID_CERT:
type = "Invalid SSL certificate";
break;
case UCLIENT_ERROR_SSL_CN_MISMATCH:
type = "Server hostname does not match SSL certificate";
break;
default:
break;
}
fprintf(stderr, "Connection error: %s\n", type);
request_done(cl);
}
static const struct uclient_cb check_cb = {
.header_done = header_done_cb,
.data_read = read_data_cb,
.data_eof = eof_cb,
.error = handle_uclient_error,
};
static int server_request(const char *url, struct blob_buf *inbuf, struct blob_buf *outbuf) {
struct uclient *ucl;
int rc = -1;
char *post_data;
out_offset = 0;
out_bytes = 0;
out_len = 0;
uloop_init();
ucl = uclient_new(url, NULL, &check_cb);
uclient_http_set_ssl_ctx(ucl, ssl_ops, ssl_ctx, 1);
ucl->timeout_msecs = REQ_TIMEOUT * 1000;
ucl->priv = outbuf;
rc = uclient_connect(ucl);
if (rc)
return rc;
rc = uclient_http_set_request_type(ucl, inbuf?"POST":"GET");
if (rc)
return rc;
uclient_http_reset_headers(ucl);
uclient_http_set_header(ucl, "User-Agent", user_agent);
if (inbuf) {
uclient_http_set_header(ucl, "Content-Type", "text/json");
post_data = blobmsg_format_json(inbuf->head, true);
uclient_write(ucl, post_data, strlen(post_data));
}
rc = uclient_request(ucl);
if (rc)
return rc;
uloop_run();
uloop_done();
uclient_free(ucl);
return 0;
}
/**
* ustream-ssl
*/
static int init_ustream_ssl(void) {
void *dlh;
glob_t gl;
int i;
dlh = dlopen("libustream-ssl.so", RTLD_LAZY | RTLD_LOCAL);
if (!dlh)
return -1;
ssl_ops = dlsym(dlh, "ustream_ssl_ops");
if (!ssl_ops)
return -1;
ssl_ctx = ssl_ops->context_new(false);
glob("/etc/ssl/certs/*.crt", 0, NULL, &gl);
if (!gl.gl_pathc)
return -2;
for (i = 0; i < gl.gl_pathc; i++)
ssl_ops->context_add_ca_crt_file(ssl_ctx, gl.gl_pathv[i]);
return 0;
}
/**
* use busybox md5sum (from jow's luci-ng)
*/
static char *md5sum(const char *file) {
pid_t pid;
int fds[2];
static char md5[33];
if (pipe(fds))
return NULL;
switch ((pid = fork()))
{
case -1:
return NULL;
case 0:
uloop_done();
dup2(fds[1], 1);
close(0);
close(2);
close(fds[0]);
close(fds[1]);
if (execl("/bin/busybox", "/bin/busybox", "md5sum", file, NULL));
return NULL;
break;
default:
memset(md5, 0, sizeof(md5));
read(fds[0], md5, 32);
waitpid(pid, NULL, 0);
close(fds[0]);
close(fds[1]);
}
return md5;
}
static int ask_user(void)
{
fprintf(stderr, "Are you sure to proceed? [N/y]\n");
if (getchar() != 'y')
return -1;
return 0;
}
/* this main function is too big... todo: split */
int main(int args, char *argv[]) {
static struct blob_buf checkbuf, reqbuf, imgbuf, upgbuf;
struct ubus_context *ctx = ubus_connect(NULL);
uint32_t id;
int rc;
int queuepos, valid;
char url[256];
char *newversion = NULL;
struct blob_attr *tb[__IMAGE_MAX];
struct blob_attr *tbc[__CHECK_MAX];
unsigned int filesize;
char *checksum = NULL;
struct stat imgstat;
if (!ctx) {
fprintf(stderr, "failed to connect to ubus.\n");
return -1;
}
if (load_config()) {
rc=-1;
goto freeubus;
}
if (chdir("/tmp")) {
rc=-1;
goto freeconfig;
}
rc = init_ustream_ssl();
if (rc == -2) {
fprintf(stderr, "No CA certificates loaded, please install ca-certificates\n");
rc=-1;
goto freessl;
}
if (rc || !ssl_ctx) {
fprintf(stderr, "SSL support not available, please install ustream-ssl\n");
rc=-1;
goto freessl;
}
blobmsg_buf_init(&checkbuf);
blobmsg_buf_init(&reqbuf);
blobmsg_buf_init(&imgbuf);
blobmsg_buf_init(&upgbuf);
if (!ubus_lookup_id(ctx, "system", &id)) {
ubus_invoke(ctx, id, "board", NULL, board_cb, &checkbuf, 3000);
} else {
fprintf(stderr, "cannot request board info from procd\n");
rc=-1;
goto freebufs;
}
if (!ubus_lookup_id(ctx, "rpc-sys", &id)) {
ubus_invoke(ctx, id, "packagelist", NULL, pkglist_cb, &checkbuf, 3000);
} else {
fprintf(stderr, "cannot request packagelist from rpcd\n");
rc=-1;
goto freeboard;
}
blobmsg_add_string(&reqbuf, "distro", distribution);
blobmsg_add_string(&reqbuf, "target", target);
blobmsg_add_string(&reqbuf, "subtarget", subtarget);
blobmsg_add_string(&reqbuf, "board", board_name);
snprintf(url, sizeof(url), "%s/%s", serverurl, APIOBJ_CHECK);
uptodate=0;
server_request(url, &checkbuf, &reqbuf);
blobmsg_parse(check_policy, __CHECK_MAX, tbc, blob_data(reqbuf.head), blob_len(reqbuf.head));
if (!tbc[CHECK_VERSION]) {
if (!uptodate) {
fprintf(stderr, "server reply invalid.\n");
rc=-1;
goto freeboard;
}
rc=0;
goto freeboard;
}
newversion = blobmsg_get_string(tbc[CHECK_VERSION]);
fprintf(stderr, "new release %s found.\n", newversion);
rc = ask_user();
if (rc)
goto freeboard;
snprintf(url, sizeof(url), "%s/%s", serverurl, APIOBJ_REQUEST);
imagebuilder = 0;
building = 0;
do {
queuepos = 0;
retry = 0;
server_request(url, &reqbuf, &imgbuf);
blobmsg_parse(image_policy, __IMAGE_MAX, tb, blob_data(imgbuf.head), blob_len(imgbuf.head));
if (tb[IMAGE_QUEUE]) {
queuepos = blobmsg_get_u32(tb[IMAGE_QUEUE]);
fprintf(stderr, "build is in queue position %u.\n", queuepos);
}
if (retry || queuepos) {
if (imgbuf.buf)
free(imgbuf.buf);
memset(&imgbuf, '\0', sizeof(imgbuf));
blobmsg_buf_init(&imgbuf);
sleep(3);
}
} while(retry || queuepos);
if (!tb[IMAGE_SYSUPGRADE]) {
fprintf(stderr, "no sysupgrade image returned\n");
rc=-1;
goto freeboard;
}
strncpy(url, blobmsg_get_string(tb[IMAGE_SYSUPGRADE]), sizeof(url));
if (!tb[IMAGE_FILESIZE]) {
fprintf(stderr, "no image size returned\n");
rc=-1;
goto freeboard;
}
filesize = blobmsg_get_u32(tb[IMAGE_FILESIZE]);
if (!tb[IMAGE_CHECKSUM]) {
fprintf(stderr, "no image checksum returned\n");
rc=-1;
goto freeboard;
}
checksum = blobmsg_get_string(tb[IMAGE_CHECKSUM]);
server_request(url, NULL, NULL);
/* usign signature is not yet implemented! */
// strncat(url, ".sig", sizeof(url));
// server_request(url, NULL, NULL);
filename = uclient_get_url_filename(url, "firmware.bin");
if (stat(filename, &imgstat)) {
fprintf(stderr, "image download failed\n");
rc=-1;
goto freeboard;
}
if ((intmax_t)imgstat.st_size != filesize) {
fprintf(stderr, "file size mismatch\n");
unlink(filename);
rc=-1;
goto freeboard;
}
if (strncmp(checksum, md5sum(filename), 33)) {
fprintf(stderr, "image checksum mismatch\n");
unlink(filename);
rc=-1;
goto freeboard;
};
if (strcmp(filename, "firmware.bin")) {
if (rename(filename, "firmware.bin")) {
fprintf(stderr, "can't rename to firmware.bin\n");
unlink(filename);
rc=-1;
goto freeboard;
}
}
if (!ubus_lookup_id(ctx, "rpc-sys", &id)) {
valid = 0;
ubus_invoke(ctx, id, "upgrade_test", NULL, upgtest_cb, &valid, 3000);
if (!valid) {
rc=-1;
goto freeboard;
}
blobmsg_add_u8(&upgbuf, "keep", 1);
fprintf(stderr, "invoking sysupgrade\n");
ubus_invoke(ctx, id, "upgrade_start", upgbuf.head, NULL, NULL, 3000);
} else {
rc=-1;
}
freeboard:
free(board_name);
free(target);
/* subtarget is a pointer within target, don't free */
free(distribution);
free(version);
free(revision);
freebufs:
if (checkbuf.buf)
free(checkbuf.buf);
if (reqbuf.buf)
free(reqbuf.buf);
if (imgbuf.buf)
free(imgbuf.buf);
if (upgbuf.buf)
free(upgbuf.buf);
freessl:
if (ssl_ctx)
ssl_ops->context_free(ssl_ctx);
freeconfig:
free(serverurl);
freeubus:
ubus_free(ctx);
return rc;
}

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