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
|
#include "dmidecodemodule.h"
#include <mcheck.h>
options opt;
static void init(void) {
/* sanity check */
if(sizeof(u8)!=1 || sizeof(u16)!=2 || sizeof(u32)!=4 || '\0'!=0)
fprintf(stderr, "%s: compiler incompatibility\n", "dmidecodemodule");
opt.devmem = DEFAULT_MEM_DEV;
opt.dumpfile = NULL;
opt.flags=0;
opt.type = NULL;
}
u8 *parse_opt_type(u8 *p, const char *arg) {
/* Allocate memory on first call only */
if(p == NULL) {
if(!(p = (u8 *)calloc(256, sizeof(u8)))) {
perror("calloc");
return NULL;
}
}
unsigned int i, j;
/* First try as a keyword */
for(i = 0; i < ARRAY_SIZE(opt_type_keyword); i++) {
if(!strcasecmp(arg, opt_type_keyword[i].keyword)) {
j = 0;
while(opt_type_keyword[i].type[j] != 255)
p[opt_type_keyword[i].type[j++]] = 1;
return p;
}
}
/* Else try as a number */
while(*arg != '\0') {
unsigned long val;
char *next;
val = strtoul(arg, &next, 0);
if(next == arg) {
fprintf(stderr, "Invalid type keyword: %s\n", arg);
free(p);
return NULL;
}
if (val > 0xff) {
fprintf(stderr, "Invalid type number: %lu\n", val);
free(p);
return NULL;
}
p[val] = 1;
arg = next;
while(*arg == ',' || *arg == ' ')
arg++;
}
return p;
}
static PyObject* dmidecode_get(PyObject *self, const char* section) {
//mtrace();
/* This is `embedding API', not applicable to this dmidecode module which is `Extending'
Py_SetProgramName("dmidecode");
int argc = 3;
char *argv[4];
argv[0] = "dmidecode";
argv[1] = "--type";
argv[2] = section;
argv[3] = NULL;
*/
int ret=0;
int found=0;
size_t fp;
int efi;
u8 *buf;
/* Set default option values */
opt.devmem = DEFAULT_MEM_DEV;
opt.flags=0;
opt.type = NULL;
opt.type=parse_opt_type(opt.type, section);
if(opt.type==NULL) return NULL;
PyObject* pydata = PyDict_New();
/***********************************/
/* Read from dump if so instructed */
if(opt.dumpfile != NULL) {
const char *dumpfile = PyString_AS_STRING(opt.dumpfile);
printf("Reading SMBIOS/DMI data from file %s.\n", dumpfile);
if((buf = mem_chunk(0, 0x20, dumpfile))!=NULL) {
if(memcmp(buf, "_SM_", 4)==0) {
if(smbios_decode(buf, dumpfile, pydata)) found++;
} else if (memcmp(buf, "_DMI_", 5)==0) {
if(legacy_decode(buf, dumpfile, pydata)) found++;
}
} else ret = 1;
} else { /* Read from /dev/mem */
/* First try EFI (ia64, Intel-based Mac) */
efi = address_from_efi(&fp);
if(efi == EFI_NOT_FOUND) {
/* Fallback to memory scan (x86, x86_64) */
if((buf=mem_chunk(0xF0000, 0x10000, opt.devmem))!=NULL) {
for(fp=0; fp<=0xFFF0; fp+=16) {
if(memcmp(buf+fp, "_SM_", 4)==0 && fp<=0xFFE0) {
if(smbios_decode(buf+fp, opt.devmem, pydata)) found++;
fp+=16;
} else if(memcmp(buf+fp, "_DMI_", 5)==0) {
if(legacy_decode(buf+fp, opt.devmem, pydata)) found++;
}
}
} else ret = 1;
} else if(efi == EFI_NO_SMBIOS) {
ret = 1;
} else {
if((buf=mem_chunk(fp, 0x20, opt.devmem))==NULL) ret = 1;
else if(smbios_decode(buf, opt.devmem, pydata)) found++;
//. TODO: dmiSetItem(pydata, "efi_address", efiAddress);
}
}
if(ret==0) {
free(buf);
if(!found)
dmiSetItem(pydata, "detect", "No SMBIOS nor DMI entry point found, sorry G.");
}
free(opt.type);
//muntrace();
return (ret != 1)?pydata:NULL;
}
static PyObject* dmidecode_get_bios(PyObject *self, PyObject *args) { return dmidecode_get(self, "bios"); }
static PyObject* dmidecode_get_system(PyObject *self, PyObject *args) { return dmidecode_get(self, "system"); }
static PyObject* dmidecode_get_baseboard(PyObject *self, PyObject *args) { return dmidecode_get(self, "baseboard"); }
static PyObject* dmidecode_get_chassis(PyObject *self, PyObject *args) { return dmidecode_get(self, "chassis"); }
static PyObject* dmidecode_get_processor(PyObject *self, PyObject *args) { return dmidecode_get(self, "processor"); }
static PyObject* dmidecode_get_memory(PyObject *self, PyObject *args) { return dmidecode_get(self, "memory"); }
static PyObject* dmidecode_get_cache(PyObject *self, PyObject *args) { return dmidecode_get(self, "cache"); }
static PyObject* dmidecode_get_connector(PyObject *self, PyObject *args) { return dmidecode_get(self, "connector"); }
static PyObject* dmidecode_get_slot(PyObject *self, PyObject *args) { return dmidecode_get(self, "slot"); }
static PyObject* dmidecode_get_type(PyObject *self, PyObject *args) {
long unsigned int lu;
if(PyArg_ParseTuple(args, (char *)"i", &lu)) {
char s[8];
sprintf(s, "%lu", lu);
return dmidecode_get(self, s);
}
return Py_None;
}
static PyObject* dmidecode_dump(PyObject *self, PyObject *args) {
if(dump(PyString_AS_STRING(opt.dumpfile)))
Py_RETURN_TRUE;
else
Py_RETURN_FALSE;
}
static PyObject* dmidecode_get_dev(PyObject *self, PyObject *null) {
if(opt.dumpfile != NULL) return opt.dumpfile;
else return PyString_FromString(opt.devmem);
}
static PyObject* dmidecode_set_dev(PyObject *self, PyObject *arg) {
if(PyString_Check(arg)) {
if(opt.dumpfile) { Py_DECREF(opt.dumpfile); }
opt.dumpfile = arg;
Py_INCREF(opt.dumpfile);
Py_RETURN_TRUE;
} else {
Py_RETURN_FALSE;
}
//PyErr_Occurred()
}
PyMethodDef DMIDataMethods[] = {
{ (char *)"dump", dmidecode_dump, METH_NOARGS, (char *)"Dump dmidata to set file" },
{ (char *)"get_dev", dmidecode_get_dev, METH_NOARGS, (char *)"Set an alternative memory device file" },
{ (char *)"set_dev", dmidecode_set_dev, METH_O, (char *)"Set an alternative memory device file" },
{ (char *)"bios", dmidecode_get_bios, METH_VARARGS, (char *)"BIOS Data" },
{ (char *)"system", dmidecode_get_system, METH_VARARGS, (char *)"System Data" },
{ (char *)"baseboard", dmidecode_get_baseboard, METH_VARARGS, (char *)"Baseboard Data" },
{ (char *)"chassis", dmidecode_get_chassis, METH_VARARGS, (char *)"Chassis Data" },
{ (char *)"processor", dmidecode_get_processor, METH_VARARGS, (char *)"Processor Data" },
{ (char *)"memory", dmidecode_get_memory, METH_VARARGS, (char *)"Memory Data" },
{ (char *)"cache", dmidecode_get_cache, METH_VARARGS, (char *)"Cache Data" },
{ (char *)"connector", dmidecode_get_connector, METH_VARARGS, (char *)"Connector Data" },
{ (char *)"slot", dmidecode_get_slot, METH_VARARGS, (char *)"Slot Data" },
{ (char *)"type", dmidecode_get_type, METH_VARARGS, (char *)"By Type" },
{ NULL, NULL, 0, NULL }
};
PyMODINIT_FUNC initdmidecode(void) {
init();
(void)Py_InitModule((char *)"dmidecode", DMIDataMethods);
}
|
