1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
|
/*
* (C) Copyright 2013-2023
* Stefano Babic <stefano.babic@swupdate.org>
*
* SPDX-License-Identifier: GPL-2.0-only
*/
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include "generated/autoconf.h"
#include "swupdate.h"
#include "parsers.h"
#include "hw-compatibility.h"
#ifdef CONFIG_LUAEXTERNAL
#include "lua.h"
#include "lauxlib.h"
#include "lualib.h"
#include "util.h"
#include "lua_util.h"
#ifndef CONFIG_SETEXTPARSERNAME
#define LUA_PARSER "lua-tools/extparser.lua"
#else
#define LUA_PARSER (CONFIG_EXTPARSERNAME)
#endif
static void sw_append_stream(struct img_type *img, const char *key,
const char *value)
{
const char offset[] = "offset";
char seek_str[MAX_SEEK_STRING_SIZE];
if (!strcmp(key, "type"))
strlcpy(img->type, value,
sizeof(img->type));
if (!strcmp(key, "filename")) {
strlcpy(img->fname, value,
sizeof(img->fname));
img->skip = SKIP_NONE;
}
if (!strcmp(key, "name")) {
strlcpy(img->id.name, value,
sizeof(img->id.name));
}
if (!strcmp(key, "version")) {
strlcpy(img->id.version, value,
sizeof(img->id.version));
}
if (!strcmp(key, "mtdname") || !strcmp(key, "dest"))
strlcpy(img->mtdname, value,
sizeof(img->mtdname));
if (!strcmp(key, "filesystem"))
strlcpy(img->filesystem, value,
sizeof(img->filesystem));
if (!strcmp(key, "volume"))
strlcpy(img->volname, value,
sizeof(img->volname));
if (!strcmp(key, "device_id"))
strlcpy(img->device, value,
sizeof(img->device));
if (!strcmp(key, "device"))
strlcpy(img->device, value,
sizeof(img->device));
if (!strncmp(key, offset, sizeof(offset))) {
strlcpy(seek_str, value,
sizeof(seek_str));
/* convert the offset handling multiplicative suffixes */
img->seek = ustrtoull(seek_str, NULL, 0);
if (errno){
ERROR("offset argument: ustrtoull failed");
}
}
if (!strcmp(key, "script"))
img->is_script = 1;
if (!strcmp(key, "path"))
strlcpy(img->path, value,
sizeof(img->path));
if (!strcmp(key, "sha256"))
ascii_to_hash(img->sha256, value);
if (!strcmp(key, "encrypted"))
img->is_encrypted = true;
if (!strcmp(key, "compressed")) {
if (value != NULL) {
if (!strcmp(value, "zlib")) {
img->compressed = COMPRESSED_ZLIB;
} else if (!strcmp(value, "zstd")) {
img->compressed = COMPRESSED_ZSTD;
} else {
img->compressed = COMPRESSED_TRUE;
}
} else {
img->compressed = COMPRESSED_TRUE;
}
}
if (!strcmp(key, "installed-directly"))
img->install_directly = 1;
if (!strcmp(key, "install-if-different"))
img->id.install_if_different = 1;
if (!strcmp(key, "install-if-higher"))
img->id.install_if_higher = 1;
}
int parse_external(struct swupdate_cfg *software, const char *filename,
char __attribute__((__unused__)) **error)
{
int ret;
unsigned int nstreams;
struct img_type *image;
struct hw_type hardware = {0};
lua_State *L = luaL_newstate(); /* opens Lua */
luaL_openlibs(L); /* opens the standard libraries */
if (luaL_loadfile(L, LUA_PARSER)) {
ERROR("ERROR loading %s", LUA_PARSER);
lua_close(L);
return 1;
}
ret = lua_pcall(L, 0, 0, 0);
if (ret) {
LUAstackDump(L);
ERROR("ERROR preparing Parser in Lua %d", ret);
return 1;
}
if (-1 == get_hw_revision(&hardware))
{
ERROR("ERROR getting hw revision");
return 1;
}
lua_getglobal(L, "xmlparser");
/* passing arguments */
lua_pushstring(L, filename);
lua_pushstring(L, hardware.boardname);
lua_pushstring(L, hardware.revision);
if (lua_pcall(L, 3, 4, 0)) {
LUAstackDump(L);
ERROR("ERROR Calling XML Parser in Lua");
lua_close(L);
return 1;
}
if (lua_type(L, 1) == LUA_TSTRING)
strlcpy(software->name, lua_tostring(L, 1),
sizeof(software->name));
if (lua_type(L, 2) == LUA_TSTRING)
strlcpy(software->version, lua_tostring(L, 2),
sizeof(software->version));
nstreams = 0;
lua_pushnil(L);
while (lua_next(L, -2) != 0) {
printf("%s - %s\n",
lua_typename(L, lua_type(L, -2)),
lua_typename(L, lua_type(L, -1)));
if (lua_type(L, -1) == LUA_TTABLE) {
lua_pushnil(L);
image = (struct img_type *)calloc(1, sizeof(struct img_type));
if (!image) {
ERROR( "No memory: malloc failed");
return -ENOMEM;
}
while (lua_next(L, -2) != 0) {
sw_append_stream(image, lua_tostring(L, -2),
lua_tostring(L, -1));
lua_pop(L, 1);
}
if (image->is_script)
LIST_INSERT_HEAD(&software->scripts, image, next);
else
LIST_INSERT_HEAD(&software->images, image, next);
nstreams++;
}
/* removes 'value'; keeps 'key' for next iteration */
lua_pop(L, 1);
}
LUAstackDump(L);
lua_close(L);
TRACE("Software: %s %s", software->name, software->version);
LIST_FOREACH(image, &software->images, next) {
TRACE("\tName: %s Type: %s", image->fname,
image->type);
}
return !(nstreams > 0);
}
#else
int parse_external(struct swupdate_cfg __attribute__((__unused__)) *software,
const char __attribute__((__unused__)) *filename,
char __attribute__((__unused__)) **error)
{
return -1;
}
#endif
|
