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
|
/* DSTART */
/* */
/* maildrop - mail delivery agent with filtering abilities */
/* */
/* Copyright 1998, Double Precision Inc. */
/* */
/* This program is distributed under the terms of the GNU General Public */
/* License. See COPYING for additional information. */
/* DEND */
#include "varlist.h"
#include "buffer.h"
#include "funcs.h"
#include "maildrop.h"
#include <string.h>
static const char rcsid[]="$Id: varlist.C 1.1 1998/04/16 23:53:22 mrsam Exp $";
class Variable {
public:
Variable *next;
Buffer name, value;
} ;
static Variable *varlist[101];
void SetVar(const Buffer &var, const Buffer &value)
{
int varlen=var.Length();
unsigned n=0;
int i;
const char *p=var;
for (i=varlen; i; --i)
n = (n << 1) ^ (unsigned char)*p++;
if (var.Length() == 7 &&
strncmp( (const char *)var, "VERBOSE", 7) == 0)
{
maildrop.verbose_level= value.Int("0");
if (maildrop.isdelivery) maildrop.verbose_level=0;
}
n %= sizeof(varlist)/sizeof(varlist[0]);
if (value.Length() == 0) // Delete variable
{
Variable **v;
for (v= &varlist[n]; *v; v= &(*v)->next)
if ( (*v)->name == var )
{
Variable *vv= (*v);
(*v)= vv->next;
delete vv;
break;
}
return;
}
Variable *v;
for (v=varlist[n]; v; v=v->next)
if ( v->name == var )
{
v->value=value;
return;
}
v=new Variable;
if (!v) outofmem();
v->name=var;
v->value=value;
v->next=varlist[n];
varlist[n]=v;
}
static Buffer zero;
const Buffer *GetVar(const Buffer &var)
{
int varlen=var.Length(),i;
unsigned n=0;
const char *p=var;
for (i=varlen; i; --i)
n = (n << 1) ^ (unsigned char)*p++;
n %= sizeof(varlist)/sizeof(varlist[0]);
Variable *v;
for (v=varlist[n]; v; v=v->next)
if ( v->name == var) return ( &v->value );
return (&zero);
}
const char *GetVarStr(const Buffer &var)
{
static Buffer tempbuf;
tempbuf= *GetVar(var);
tempbuf += '\0';
return (tempbuf);
}
// Create environment for a child process.
char **ExportEnv()
{
unsigned i,n,l;
Variable *v;
char **envp;
char *envdatap=0;
for (i=n=l=0; i<sizeof(varlist)/sizeof(varlist[0]); i++)
for (v=varlist[i]; v; v=v->next)
{
l += v->name.Length() + v->value.Length()+2;
++n;
}
if ((envp=new char *[n+1]) == NULL) outofmem();
if (l && (envdatap=new char[l]) == NULL) outofmem();
for (i=n=0; i<sizeof(varlist)/sizeof(varlist[0]); i++)
for (v=varlist[i]; v; v=v->next)
{
envp[n]=envdatap;
memcpy(envdatap, (const char *)v->name,
v->name.Length());
envdatap += v->name.Length();
*envdatap++ = '=';
memcpy(envdatap, (const char *)v->value,
v->value.Length());
envdatap += v->value.Length();
*envdatap++ = 0;
n++;
}
envp[n]=0;
return (envp);
}
|
