1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * Inspire is copyright (C) 2002-2004 ChatSpike-Dev.
7 * <brain@chatspike.net>
8 * <Craig@chatspike.net>
10 * Written by Craig Edwards, Craig McLure, and others.
11 * This program is free but copyrighted software; see
12 * the file COPYING for details.
14 * ---------------------------------------------------
17 /* $ModDesc: Allows for MD5 encrypted oper passwords */
23 #include "helperfuncs.h"
26 /* The four core functions - F1 is optimized somewhat */
27 #define F1(x, y, z) (z ^ (x & (y ^ z)))
28 #define F2(x, y, z) F1(z, x, y)
29 #define F3(x, y, z) (x ^ y ^ z)
30 #define F4(x, y, z) (y ^ (x | ~z))
32 /* This is the central step in the MD5 algorithm. */
33 #define MD5STEP(f,w,x,y,z,in,s) \
34 (w += f(x,y,z) + in, w = (w<<s | w>>(32-s)) + x)
36 typedef unsigned long word32;
37 typedef unsigned char byte;
47 void MD5Init(struct MD5Context *context);
48 void MD5Update(struct MD5Context *context, byte const *buf, int len);
49 void MD5Final(byte digest[16], struct MD5Context *context);
50 void MD5Transform(word32 buf[4], word32 const in[16]);
51 void MyMD5(void *dest, void *orig, int len);
52 void GenHash(const char* src, char* dest);
54 void byteSwap(word32 *buf, unsigned words)
56 byte *p = (byte *)buf;
59 *buf++ = (word32)((unsigned)p[3] << 8 | p[2]) << 16 |
60 ((unsigned)p[1] << 8 | p[0]);
65 void MD5Init(struct MD5Context *ctx)
67 ctx->buf[0] = 0x67452301;
68 ctx->buf[1] = 0xefcdab89;
69 ctx->buf[2] = 0x98badcfe;
70 ctx->buf[3] = 0x10325476;
76 void MD5Update(struct MD5Context *ctx, byte const *buf, int len)
80 /* Update byte count */
83 if ((ctx->bytes[0] = t + len) < t)
84 ctx->bytes[1]++; /* Carry from low to high */
86 t = 64 - (t & 0x3f); /* Space available in ctx->in (at least 1) */
87 if ((unsigned)t > (unsigned)len) {
88 memcpy((byte *)ctx->in + 64 - (unsigned)t, buf, len);
91 /* First chunk is an odd size */
92 memcpy((byte *)ctx->in + 64 - (unsigned)t, buf, (unsigned)t);
93 byteSwap(ctx->in, 16);
94 MD5Transform(ctx->buf, ctx->in);
98 /* Process data in 64-byte chunks */
100 memcpy(ctx->in, buf, 64);
101 byteSwap(ctx->in, 16);
102 MD5Transform(ctx->buf, ctx->in);
107 /* Handle any remaining bytes of data. */
108 memcpy(ctx->in, buf, len);
111 void MD5Final(byte digest[16], struct MD5Context *ctx)
113 int count = (int)(ctx->bytes[0] & 0x3f); /* Bytes in ctx->in */
114 byte *p = (byte *)ctx->in + count; /* First unused byte */
116 /* Set the first char of padding to 0x80. There is always room. */
119 /* Bytes of padding needed to make 56 bytes (-8..55) */
120 count = 56 - 1 - count;
122 if (count < 0) { /* Padding forces an extra block */
123 memset(p, 0, count+8);
124 byteSwap(ctx->in, 16);
125 MD5Transform(ctx->buf, ctx->in);
129 memset(p, 0, count+8);
130 byteSwap(ctx->in, 14);
132 /* Append length in bits and transform */
133 ctx->in[14] = ctx->bytes[0] << 3;
134 ctx->in[15] = ctx->bytes[1] << 3 | ctx->bytes[0] >> 29;
135 MD5Transform(ctx->buf, ctx->in);
137 byteSwap(ctx->buf, 4);
138 memcpy(digest, ctx->buf, 16);
139 memset(ctx, 0, sizeof(ctx));
142 void MD5Transform(word32 buf[4], word32 const in[16])
144 register word32 a, b, c, d;
151 MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7);
152 MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12);
153 MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17);
154 MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22);
155 MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7);
156 MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12);
157 MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17);
158 MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22);
159 MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7);
160 MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12);
161 MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17);
162 MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22);
163 MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7);
164 MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12);
165 MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17);
166 MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22);
168 MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5);
169 MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9);
170 MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14);
171 MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20);
172 MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5);
173 MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9);
174 MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14);
175 MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20);
176 MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5);
177 MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9);
178 MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14);
179 MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20);
180 MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5);
181 MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9);
182 MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14);
183 MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20);
185 MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4);
186 MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11);
187 MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16);
188 MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23);
189 MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4);
190 MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11);
191 MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16);
192 MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23);
193 MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4);
194 MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11);
195 MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16);
196 MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23);
197 MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4);
198 MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11);
199 MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16);
200 MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23);
202 MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6);
203 MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10);
204 MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15);
205 MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21);
206 MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6);
207 MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10);
208 MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15);
209 MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21);
210 MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6);
211 MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);
212 MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15);
213 MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21);
214 MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6);
215 MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10);
216 MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);
217 MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21);
226 void MyMD5(void *dest, void *orig, int len)
228 struct MD5Context context;
231 MD5Update(&context, (const unsigned char*)orig, len);
232 MD5Final((unsigned char*)dest, &context);
236 void GenHash(const char* src, char* dest)
239 unsigned char bytes[16];
242 MyMD5((char*)bytes,(void*)src,strlen(src));
243 for (i = 0; i < 16; i++)
245 const char* xtab = "0123456789abcdef";
246 unsigned char lo = xtab[bytes[i] % 16];
247 unsigned char hi = xtab[bytes[i] / 16];
257 void handle_mkpasswd(char **parameters, int pcnt, userrec *user)
260 GenHash(parameters[0],buffer);
261 WriteServ(user->fd,"NOTICE %s :MD5 hashed password for %s is %s",user->nick,parameters[0],buffer);
264 class ModuleOperMD5 : public Module
271 Srv->AddCommand("MKPASSWD",handle_mkpasswd,'o',1,"m_opermd5.so");
274 virtual ~ModuleOperMD5()
279 virtual int OnOperCompare(std::string data, std::string input)
282 if (data.length() == 32) // if its 32 chars long, try it as an md5
284 GenHash(input.c_str(),buffer);
285 if (!strcasecmp(data.c_str(),buffer))
294 virtual Version GetVersion()
296 return Version(1,0,0,1,VF_VENDOR);
299 virtual void OnUserConnect(userrec* user)
306 class ModuleOperMD5Factory : public ModuleFactory
309 ModuleOperMD5Factory()
313 ~ModuleOperMD5Factory()
317 virtual Module * CreateModule()
319 return new ModuleOperMD5;
325 extern "C" void * init_module( void )
327 return new ModuleOperMD5Factory;