1 /* +------------------------------------+
2 * | Inspire Internet Relay Chat Daemon |
3 * +------------------------------------+
5 * InspIRCd is copyright (C) 2002-2006 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 */
25 #include "helperfuncs.h"
27 /* The four core functions - F1 is optimized somewhat */
28 #define F1(x, y, z) (z ^ (x & (y ^ z)))
29 #define F2(x, y, z) F1(z, x, y)
30 #define F3(x, y, z) (x ^ y ^ z)
31 #define F4(x, y, z) (y ^ (x | ~z))
33 /* This is the central step in the MD5 algorithm. */
34 #define MD5STEP(f,w,x,y,z,in,s) \
35 (w += f(x,y,z) + in, w = (w<<s | w>>(32-s)) + x)
37 typedef unsigned int word32; /* NOT unsigned long. We don't support 16 bit platforms, anyway. */
38 typedef unsigned char byte;
46 void MD5Init(struct MD5Context *context);
47 void MD5Update(struct MD5Context *context, byte const *buf, int len);
48 void MD5Final(byte digest[16], struct MD5Context *context);
49 void MD5Transform(word32 buf[4], word32 const in[16]);
50 void MyMD5(void *dest, void *orig, int len);
51 void GenHash(const char* src, char* dest);
53 void byteSwap(word32 *buf, unsigned words)
55 byte *p = (byte *)buf;
59 *buf++ = (word32)((unsigned)p[3] << 8 | p[2]) << 16 |
60 ((unsigned)p[1] << 8 | p[0]);
65 /* XXX - maybe if we had an md5/encryption moduletype? *shrug* */
66 void MD5Init(struct MD5Context *ctx)
68 ctx->buf[0] = 0x67452301;
69 ctx->buf[1] = 0xefcdab89;
70 ctx->buf[2] = 0x98badcfe;
71 ctx->buf[3] = 0x10325476;
77 void MD5Update(struct MD5Context *ctx, byte const *buf, int len)
81 /* Update byte count */
84 if ((ctx->bytes[0] = t + len) < t)
85 ctx->bytes[1]++; /* Carry from low to high */
87 t = 64 - (t & 0x3f); /* Space available in ctx->in (at least 1) */
88 if ((unsigned)t > (unsigned)len)
90 memcpy((byte *)ctx->in + 64 - (unsigned)t, buf, len);
93 /* First chunk is an odd size */
94 memcpy((byte *)ctx->in + 64 - (unsigned)t, buf, (unsigned)t);
95 byteSwap(ctx->in, 16);
96 MD5Transform(ctx->buf, ctx->in);
100 /* Process data in 64-byte chunks */
103 memcpy(ctx->in, buf, 64);
104 byteSwap(ctx->in, 16);
105 MD5Transform(ctx->buf, ctx->in);
110 /* Handle any remaining bytes of data. */
111 memcpy(ctx->in, buf, len);
114 void MD5Final(byte digest[16], struct MD5Context *ctx)
116 int count = (int)(ctx->bytes[0] & 0x3f); /* Bytes in ctx->in */
117 byte *p = (byte *)ctx->in + count; /* First unused byte */
119 /* Set the first char of padding to 0x80. There is always room. */
122 /* Bytes of padding needed to make 56 bytes (-8..55) */
123 count = 56 - 1 - count;
126 { /* Padding forces an extra block */
127 memset(p, 0, count+8);
128 byteSwap(ctx->in, 16);
129 MD5Transform(ctx->buf, ctx->in);
133 memset(p, 0, count+8);
134 byteSwap(ctx->in, 14);
136 /* Append length in bits and transform */
137 ctx->in[14] = ctx->bytes[0] << 3;
138 ctx->in[15] = ctx->bytes[1] << 3 | ctx->bytes[0] >> 29;
139 MD5Transform(ctx->buf, ctx->in);
141 byteSwap(ctx->buf, 4);
142 memcpy(digest, ctx->buf, 16);
143 memset(ctx, 0, sizeof(ctx));
146 void MD5Transform(word32 buf[4], word32 const in[16])
148 register word32 a, b, c, d;
155 MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7);
156 MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12);
157 MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17);
158 MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22);
159 MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7);
160 MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12);
161 MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17);
162 MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22);
163 MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7);
164 MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12);
165 MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17);
166 MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22);
167 MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7);
168 MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12);
169 MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17);
170 MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22);
172 MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5);
173 MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9);
174 MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14);
175 MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20);
176 MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5);
177 MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9);
178 MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14);
179 MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20);
180 MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5);
181 MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9);
182 MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14);
183 MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20);
184 MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5);
185 MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9);
186 MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14);
187 MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20);
189 MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4);
190 MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11);
191 MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16);
192 MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23);
193 MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4);
194 MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11);
195 MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16);
196 MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23);
197 MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4);
198 MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11);
199 MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16);
200 MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23);
201 MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4);
202 MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11);
203 MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16);
204 MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23);
206 MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6);
207 MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10);
208 MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15);
209 MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21);
210 MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6);
211 MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10);
212 MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15);
213 MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21);
214 MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6);
215 MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);
216 MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15);
217 MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21);
218 MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6);
219 MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10);
220 MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);
221 MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21);
230 void MyMD5(void *dest, void *orig, int len)
232 struct MD5Context context;
235 MD5Update(&context, (const unsigned char*)orig, len);
236 MD5Final((unsigned char*)dest, &context);
240 void GenHash(const char* src, char* dest)
243 unsigned char bytes[16];
246 MyMD5((char*)bytes,(void*)src,strlen(src));
247 for (i = 0; i < 16; i++)
249 const char* xtab = "0123456789abcdef";
250 unsigned char lo = xtab[bytes[i] % 16];
251 unsigned char hi = xtab[bytes[i] / 16];
261 class cmd_mkpasswd : public command_t
264 cmd_mkpasswd () : command_t("MKPASSWD", 'o', 1)
266 this->source = "m_opermd5.so";
269 void Handle (char **parameters, int pcnt, userrec *user)
272 GenHash(parameters[0],buffer);
273 WriteServ(user->fd,"NOTICE %s :MD5 hashed password for %s is %s",user->nick,parameters[0],buffer);
277 class ModuleOperMD5 : public Module
280 cmd_mkpasswd* mycommand;
283 ModuleOperMD5(Server* Me)
287 mycommand = new cmd_mkpasswd();
288 Srv->AddCommand(mycommand);
291 virtual ~ModuleOperMD5()
295 void Implements(char* List)
297 List[I_OnOperCompare] = 1;
300 virtual int OnOperCompare(const std::string &data, const std::string &input)
303 if (data.length() == 32) // if its 32 chars long, try it as an md5
305 GenHash(input.c_str(),buffer);
306 if (!strcasecmp(data.c_str(),buffer))
315 virtual Version GetVersion()
317 return Version(1,0,0,1,VF_VENDOR);
322 class ModuleOperMD5Factory : public ModuleFactory
325 ModuleOperMD5Factory()
329 ~ModuleOperMD5Factory()
333 virtual Module * CreateModule(Server* Me)
335 return new ModuleOperMD5(Me);
341 extern "C" void * init_module( void )
343 return new ModuleOperMD5Factory;