142 lines
4.1 KiB
C
142 lines
4.1 KiB
C
/*
|
|
* Copyright (C) 2009 The Android Open Source Project
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
#include <stdlib.h>
|
|
|
|
#include "edify/expr.h"
|
|
#include "updater.h"
|
|
#include "install.h"
|
|
#include "minzip/Zip.h"
|
|
|
|
// Where in the package we expect to find the edify script to execute.
|
|
// (Note it's "updateR-script", not the older "update-script".)
|
|
#define SCRIPT_NAME "META-INF/com/google/android/updater-script"
|
|
|
|
int main(int argc, char** argv) {
|
|
// Various things log information to stdout or stderr more or less
|
|
// at random. The log file makes more sense if buffering is
|
|
// turned off so things appear in the right order.
|
|
setbuf(stdout, NULL);
|
|
setbuf(stderr, NULL);
|
|
|
|
if (argc != 4) {
|
|
fprintf(stderr, "unexpected number of arguments (%d)\n", argc);
|
|
return 1;
|
|
}
|
|
|
|
char* version = argv[1];
|
|
if ((version[0] != '1' && version[0] != '2' && version[0] != '3') ||
|
|
version[1] != '\0') {
|
|
// We support version 1, 2, or 3.
|
|
fprintf(stderr, "wrong updater binary API; expected 1, 2, or 3; "
|
|
"got %s\n",
|
|
argv[1]);
|
|
return 2;
|
|
}
|
|
|
|
// Set up the pipe for sending commands back to the parent process.
|
|
|
|
int fd = atoi(argv[2]);
|
|
FILE* cmd_pipe = fdopen(fd, "wb");
|
|
setlinebuf(cmd_pipe);
|
|
|
|
// Extract the script from the package.
|
|
|
|
char* package_data = argv[3];
|
|
ZipArchive za;
|
|
int err;
|
|
err = mzOpenZipArchive(package_data, &za);
|
|
if (err != 0) {
|
|
fprintf(stderr, "failed to open package %s: %s\n",
|
|
package_data, strerror(err));
|
|
return 3;
|
|
}
|
|
|
|
const ZipEntry* script_entry = mzFindZipEntry(&za, SCRIPT_NAME);
|
|
if (script_entry == NULL) {
|
|
fprintf(stderr, "failed to find %s in %s\n", SCRIPT_NAME, package_data);
|
|
return 4;
|
|
}
|
|
|
|
char* script = malloc(script_entry->uncompLen+1);
|
|
if (!mzReadZipEntry(&za, script_entry, script, script_entry->uncompLen)) {
|
|
fprintf(stderr, "failed to read script from package\n");
|
|
return 5;
|
|
}
|
|
script[script_entry->uncompLen] = '\0';
|
|
|
|
// Configure edify's functions.
|
|
|
|
RegisterBuiltins();
|
|
RegisterInstallFunctions();
|
|
FinishRegistration();
|
|
|
|
// Parse the script.
|
|
|
|
Expr* root;
|
|
int error_count = 0;
|
|
yy_scan_string(script);
|
|
int error = yyparse(&root, &error_count);
|
|
if (error != 0 || error_count > 0) {
|
|
fprintf(stderr, "%d parse errors\n", error_count);
|
|
return 6;
|
|
}
|
|
|
|
// Evaluate the parsed script.
|
|
|
|
UpdaterInfo updater_info;
|
|
updater_info.cmd_pipe = cmd_pipe;
|
|
updater_info.package_zip = &za;
|
|
updater_info.version = atoi(version);
|
|
|
|
State state;
|
|
state.cookie = &updater_info;
|
|
state.script = script;
|
|
state.errmsg = NULL;
|
|
|
|
// Evaluate
|
|
|
|
char* result = Evaluate(&state, root);
|
|
if (result == NULL) {
|
|
if (state.errmsg == NULL) {
|
|
fprintf(stderr, "script aborted (no error message)\n");
|
|
fprintf(cmd_pipe, "ui_print script aborted (no error message)\n");
|
|
} else {
|
|
fprintf(stderr, "script aborted: %s\n", state.errmsg);
|
|
char* line = strtok(state.errmsg, "\n");
|
|
while (line) {
|
|
fprintf(cmd_pipe, "ui_print %s\n", line);
|
|
line = strtok(NULL, "\n");
|
|
}
|
|
fprintf(cmd_pipe, "ui_print\n");
|
|
}
|
|
free(state.errmsg);
|
|
return 7;
|
|
} else {
|
|
fprintf(stderr, "script result was [%s]\n", result);
|
|
free(result);
|
|
}
|
|
|
|
if (updater_info.package_zip) {
|
|
mzCloseZipArchive(updater_info.package_zip);
|
|
}
|
|
free(script);
|
|
|
|
return 0;
|
|
}
|