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
|
/* $Id: portlistingparse.c,v 1.9 2015/07/15 12:41:13 nanard Exp $ */
/* MiniUPnP project
* http://miniupnp.free.fr/ or http://miniupnp.tuxfamily.org/
* (c) 2011-2015 Thomas Bernard
* This software is subject to the conditions detailed
* in the LICENCE file provided within the distribution */
#include <string.h>
#include <stdlib.h>
#ifdef DEBUG
#include <stdio.h>
#endif /* DEBUG */
#include "portlistingparse.h"
#include "minixml.h"
/* list of the elements */
static const struct {
const portMappingElt code;
const char * const str;
} elements[] = {
{ PortMappingEntry, "PortMappingEntry"},
{ NewRemoteHost, "NewRemoteHost"},
{ NewExternalPort, "NewExternalPort"},
{ NewProtocol, "NewProtocol"},
{ NewInternalPort, "NewInternalPort"},
{ NewInternalClient, "NewInternalClient"},
{ NewEnabled, "NewEnabled"},
{ NewDescription, "NewDescription"},
{ NewLeaseTime, "NewLeaseTime"},
{ PortMappingEltNone, NULL}
};
/* Helper function */
static UNSIGNED_INTEGER
atoui(const char * p, int l)
{
UNSIGNED_INTEGER r = 0;
while(l > 0 && *p)
{
if(*p >= '0' && *p <= '9')
r = r*10 + (*p - '0');
else
break;
p++;
l--;
}
return r;
}
/* Start element handler */
static void
startelt(void * d, const char * name, int l)
{
int i;
struct PortMappingParserData * pdata = (struct PortMappingParserData *)d;
pdata->curelt = PortMappingEltNone;
for(i = 0; elements[i].str; i++)
{
if(memcmp(name, elements[i].str, l) == 0)
{
pdata->curelt = elements[i].code;
break;
}
}
if(pdata->curelt == PortMappingEntry)
{
struct PortMapping * pm;
pm = calloc(1, sizeof(struct PortMapping));
if(pm == NULL)
{
/* malloc error */
#ifdef DEBUG
fprintf(stderr, "%s: error allocating memory",
"startelt");
#endif /* DEBUG */
return;
}
pm->l_next = pdata->l_head; /* insert in list */
pdata->l_head = pm;
}
}
/* End element handler */
static void
endelt(void * d, const char * name, int l)
{
struct PortMappingParserData * pdata = (struct PortMappingParserData *)d;
(void)name;
(void)l;
pdata->curelt = PortMappingEltNone;
}
/* Data handler */
static void
data(void * d, const char * data, int l)
{
struct PortMapping * pm;
struct PortMappingParserData * pdata = (struct PortMappingParserData *)d;
pm = pdata->l_head;
if(!pm)
return;
if(l > 63)
l = 63;
switch(pdata->curelt)
{
case NewRemoteHost:
memcpy(pm->remoteHost, data, l);
pm->remoteHost[l] = '\0';
break;
case NewExternalPort:
pm->externalPort = (unsigned short)atoui(data, l);
break;
case NewProtocol:
if(l > 3)
l = 3;
memcpy(pm->protocol, data, l);
pm->protocol[l] = '\0';
break;
case NewInternalPort:
pm->internalPort = (unsigned short)atoui(data, l);
break;
case NewInternalClient:
memcpy(pm->internalClient, data, l);
pm->internalClient[l] = '\0';
break;
case NewEnabled:
pm->enabled = (unsigned char)atoui(data, l);
break;
case NewDescription:
memcpy(pm->description, data, l);
pm->description[l] = '\0';
break;
case NewLeaseTime:
pm->leaseTime = atoui(data, l);
break;
default:
break;
}
}
/* Parse the PortMappingList XML document for IGD version 2
*/
void
ParsePortListing(const char * buffer, int bufsize,
struct PortMappingParserData * pdata)
{
struct xmlparser parser;
memset(pdata, 0, sizeof(struct PortMappingParserData));
/* init xmlparser */
parser.xmlstart = buffer;
parser.xmlsize = bufsize;
parser.data = pdata;
parser.starteltfunc = startelt;
parser.endeltfunc = endelt;
parser.datafunc = data;
parser.attfunc = 0;
parsexml(&parser);
}
void
FreePortListing(struct PortMappingParserData * pdata)
{
struct PortMapping * pm;
while((pm = pdata->l_head) != NULL)
{
/* remove from list */
pdata->l_head = pm->l_next;
free(pm);
}
}
|
