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
|
#include "postgres.h"
#include "mach-o/rld.h"
#include "streams/streams.h"
static char *lastError = NULL;
static NXStream *
OpenError()
{
return NXOpenMemory(NULL, 0, NX_WRITEONLY);
}
static void
CloseError(NXStream * s)
{
if (s)
NXCloseMemory(s, NX_FREEBUFFER);
}
static void
TransferError(NXStream * s)
{
char *buffer;
int len,
maxlen;
if (lastError)
free(lastError);
NXGetMemoryBuffer(s, &buffer, &len, &maxlen);
lastError = malloc(len + 1);
strcpy(lastError, buffer);
}
void *
next_dlopen(char *name)
{
int rld_success;
NXStream *errorStream;
char *result = NULL;
char **p;
errorStream = OpenError();
p = calloc(2, sizeof(void *));
p[0] = name;
rld_success = rld_load(errorStream, NULL, p, NULL);
free(p);
if (!rld_success)
{
TransferError(errorStream);
result = (char *) 1;
}
CloseError(errorStream);
return result;
}
int
next_dlclose(void *handle)
{
return 0;
}
void *
next_dlsym(void *handle, char *symbol)
{
NXStream *errorStream = OpenError();
char symbuf[1024];
unsigned long symref = 0;
snprintf(symbuf, sizeof(symbuf), "_%s", symbol);
if (!rld_lookup(errorStream, symbuf, &symref))
TransferError(errorStream);
CloseError(errorStream);
return (void *) symref;
}
char *
next_dlerror(void)
{
return lastError;
}
|
