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Commit | Line | Data |
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d80aac12 | 1 | /* |
2 | * | |
3 | * RADIUS | |
4 | * Remote Authentication Dial In User Service | |
5 | * | |
6 | * | |
7 | * Livingston Enterprises, Inc. | |
8 | * 6920 Koll Center Parkway | |
9 | * Pleasanton, CA 94566 | |
10 | * | |
11 | * Copyright 1992 Livingston Enterprises, Inc. | |
12 | * Copyright 1997 Cistron Internet Services B.V. | |
13 | * | |
14 | * Permission to use, copy, modify, and distribute this software for any | |
15 | * purpose and without fee is hereby granted, provided that this | |
16 | * copyright and permission notice appear on all copies and supporting | |
17 | * documentation, the name of Livingston Enterprises, Inc. not be used | |
18 | * in advertising or publicity pertaining to distribution of the | |
19 | * program without specific prior permission, and notice be given | |
20 | * in supporting documentation that copying and distribution is by | |
21 | * permission of Livingston Enterprises, Inc. | |
22 | * | |
23 | * Livingston Enterprises, Inc. makes no representations about | |
24 | * the suitability of this software for any purpose. It is | |
25 | * provided "as is" without express or implied warranty. | |
26 | * | |
27 | */ | |
28 | ||
29 | /* | |
30 | * util.c Miscellanous generic functions. | |
31 | * | |
32 | */ | |
33 | ||
34 | char util_sccsid[] = | |
35 | "@(#)util.c 1.5 Copyright 1992 Livingston Enterprises Inc\n" | |
36 | " 2.1 Copyright 1997 Cistron Internet Services B.V."; | |
37 | ||
38 | #include <sys/types.h> | |
39 | #include <sys/socket.h> | |
40 | #include <sys/time.h> | |
41 | #include <netinet/in.h> | |
42 | ||
43 | #include <stdio.h> | |
44 | #include <stdlib.h> | |
45 | #include <netdb.h> | |
46 | #include <pwd.h> | |
47 | #include <time.h> | |
48 | #include <ctype.h> | |
49 | #include <signal.h> | |
50 | ||
51 | #include "md5.h" | |
52 | #include "util.h" | |
53 | ||
54 | /* | |
55 | * Check for valid IP address in standard dot notation. | |
56 | */ | |
57 | static int good_ipaddr(char *addr) | |
58 | { | |
59 | int dot_count; | |
60 | int digit_count; | |
61 | ||
62 | dot_count = 0; | |
63 | digit_count = 0; | |
64 | while(*addr != '\0' && *addr != ' ') { | |
65 | if(*addr == '.') { | |
66 | dot_count++; | |
67 | digit_count = 0; | |
68 | } | |
69 | else if(!isdigit(*addr)) { | |
70 | dot_count = 5; | |
71 | } | |
72 | else { | |
73 | digit_count++; | |
74 | if(digit_count > 3) { | |
75 | dot_count = 5; | |
76 | } | |
77 | } | |
78 | addr++; | |
79 | } | |
80 | if(dot_count != 3) { | |
81 | return(-1); | |
82 | } | |
83 | else { | |
84 | return(0); | |
85 | } | |
86 | } | |
87 | ||
88 | /* | |
89 | * Return an IP address in host long notation from | |
90 | * one supplied in standard dot notation. | |
91 | */ | |
92 | static UINT4 ipstr2long(char *ip_str) | |
93 | { | |
94 | char buf[6]; | |
95 | char *ptr; | |
96 | int i; | |
97 | int count; | |
98 | UINT4 ipaddr; | |
99 | int cur_byte; | |
100 | ||
101 | ipaddr = (UINT4)0; | |
102 | for(i = 0;i < 4;i++) { | |
103 | ptr = buf; | |
104 | count = 0; | |
105 | *ptr = '\0'; | |
106 | while(*ip_str != '.' && *ip_str != '\0' && count < 4) { | |
107 | if(!isdigit(*ip_str)) { | |
108 | return((UINT4)0); | |
109 | } | |
110 | *ptr++ = *ip_str++; | |
111 | count++; | |
112 | } | |
113 | if(count >= 4 || count == 0) { | |
114 | return((UINT4)0); | |
115 | } | |
116 | *ptr = '\0'; | |
117 | cur_byte = atoi(buf); | |
118 | if(cur_byte < 0 || cur_byte > 255) { | |
119 | return((UINT4)0); | |
120 | } | |
121 | ip_str++; | |
122 | ipaddr = ipaddr << 8 | (UINT4)cur_byte; | |
123 | } | |
124 | return(ipaddr); | |
125 | } | |
126 | ||
127 | /* | |
128 | * Return an IP address in host long notation from a host | |
129 | * name or address in dot notation. | |
130 | */ | |
131 | UINT4 get_ipaddr(char *host) | |
132 | { | |
133 | struct hostent *hp; | |
134 | ||
135 | if(good_ipaddr(host) == 0) { | |
136 | return(ipstr2long(host)); | |
137 | } | |
138 | else if((hp = gethostbyname(host)) == (struct hostent *)NULL) { | |
139 | return((UINT4)0); | |
140 | } | |
141 | return(ntohl(*(UINT4 *)hp->h_addr)); | |
142 | } | |
143 | ||
144 | ||
145 | void md5_calc(unsigned char *output, unsigned char *input, unsigned int inlen) | |
146 | { | |
147 | MD5_CTX context; | |
148 | ||
149 | MD5Init(&context); | |
150 | MD5Update(&context, input, inlen); | |
151 | MD5Final(output, &context); | |
152 | } | |
153 |