1 /*
2 ettercap -- services list module
3
4 Copyright (C) ALoR & NaGA
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19
20
21 */
22
23 #include <ec.h>
24 #include <ec_file.h>
25 #include <ec_proto.h>
26
27 /* globals */
28
29 static SLIST_HEAD(, entry) serv_head;
30
31 struct entry {
32 u_int32 serv;
33 u_int16 proto;
34 char *name;
35 SLIST_ENTRY(entry) next;
36 };
37
38 /* protos */
39
40 static void discard_servdb(void);
41 int services_init(void);
42 char * service_search(u_int32 serv, u_int8 proto);
43
44 /*****************************************/
45
46
discard_servdb(void)47 static void discard_servdb(void)
48 {
49 struct entry *l;
50
51 while (SLIST_FIRST(&serv_head) != NULL) {
52 l = SLIST_FIRST(&serv_head);
53 SLIST_REMOVE_HEAD(&serv_head, next);
54 SAFE_FREE(l->name);
55 SAFE_FREE(l);
56 }
57
58 DEBUG_MSG("ATEXIT: discard_servdb");
59
60 return;
61 }
62
63
services_init(void)64 int services_init(void)
65 {
66 struct entry *s;
67 FILE *f;
68
69 char line[128];
70 char name[32];
71 char type[8];
72 u_int serv;
73 u_int8 proto;
74 int i = 0;
75
76 /* errors are handled by the function */
77 f = open_data("share", SERVICES_NAMES, FOPEN_READ_TEXT);
78 ON_ERROR(f, NULL, "Cannot open %s", SERVICES_NAMES);
79
80 while (fgets(line, 80, f) != 0) {
81
82 if (sscanf(line, "%31s%u/%7s", name, &serv, type) != 3)
83 continue;
84
85 /* only tcp and udp services */
86 if (!strcmp(type, "tcp"))
87 proto = NL_TYPE_TCP;
88 else if (!strcmp(type, "udp"))
89 proto = NL_TYPE_UDP;
90 else
91 continue;
92
93 /* skip comments */
94 if (strstr(name, "#"))
95 continue;
96
97 SAFE_CALLOC(s, 1, sizeof(struct entry));
98
99 s->name = strdup(name);
100 s->serv = htons(serv);
101 s->proto = proto;
102
103 SLIST_INSERT_HEAD(&serv_head, s, next);
104
105 i++;
106
107 }
108
109 DEBUG_MSG("serv_init -- %d services loaded", i);
110 USER_MSG("%4d known services\n", i);
111
112 fclose(f);
113
114 atexit(discard_servdb);
115
116 return i;
117 }
118
119 /*
120 * search for a service and
121 * return its name
122 */
123
service_search(u_int32 serv,u_int8 proto)124 char * service_search(u_int32 serv, u_int8 proto)
125 {
126 struct entry *s;
127
128 SLIST_FOREACH(s, &serv_head, next) {
129 if (s->serv == serv && s->proto == proto)
130 return (s->name);
131 }
132
133 /* empty name for unknown services */
134 return "";
135 }
136
137
138 /* EOF */
139
140 // vim:ts=3:expandtab
141
142