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 */
22 #include "inspircd_config.h"
29 #include "helperfuncs.h"
31 /* The four core functions - F1 is optimized somewhat */
32 #define F1(x, y, z) (z ^ (x & (y ^ z)))
33 #define F2(x, y, z) F1(z, x, y)
34 #define F3(x, y, z) (x ^ y ^ z)
35 #define F4(x, y, z) (y ^ (x | ~z))
37 /* This is the central step in the MD5 algorithm. */
38 #define MD5STEP(f,w,x,y,z,in,s) \
39 (w += f(x,y,z) + in, w = (w<<s | w>>(32-s)) + x)
42 typedef unsigned int uint32_t;
45 typedef uint32_t word32; /* NOT unsigned long. We don't support 16 bit platforms, anyway. */
46 typedef unsigned char byte;
48 class MD5Context : public classbase
56 void MD5Init(struct MD5Context *context);
57 void MD5Update(struct MD5Context *context, byte const *buf, int len);
58 void MD5Final(byte digest[16], struct MD5Context *context);
59 void MD5Transform(word32 buf[4], word32 const in[16]);
60 void MyMD5(void *dest, void *orig, int len);
61 void GenHash(const char* src, char* dest);
63 void byteSwap(word32 *buf, unsigned words)
65 byte *p = (byte *)buf;
69 *buf++ = (word32)((unsigned)p[3] << 8 | p[2]) << 16 |
70 ((unsigned)p[1] << 8 | p[0]);
75 /* XXX - maybe if we had an md5/encryption moduletype? *shrug* */
76 void MD5Init(struct MD5Context *ctx)
78 ctx->buf[0] = 0x67452301;
79 ctx->buf[1] = 0xefcdab89;
80 ctx->buf[2] = 0x98badcfe;
81 ctx->buf[3] = 0x10325476;
87 void MD5Update(struct MD5Context *ctx, byte const *buf, int len)
91 /* Update byte count */
94 if ((ctx->bytes[0] = t + len) < t)
95 ctx->bytes[1]++; /* Carry from low to high */
97 t = 64 - (t & 0x3f); /* Space available in ctx->in (at least 1) */
98 if ((unsigned)t > (unsigned)len)
100 memcpy((byte *)ctx->in + 64 - (unsigned)t, buf, len);
103 /* First chunk is an odd size */
104 memcpy((byte *)ctx->in + 64 - (unsigned)t, buf, (unsigned)t);
105 byteSwap(ctx->in, 16);
106 MD5Transform(ctx->buf, ctx->in);
110 /* Process data in 64-byte chunks */
113 memcpy(ctx->in, buf, 64);
114 byteSwap(ctx->in, 16);
115 MD5Transform(ctx->buf, ctx->in);
120 /* Handle any remaining bytes of data. */
121 memcpy(ctx->in, buf, len);
124 void MD5Final(byte digest[16], struct MD5Context *ctx)
126 int count = (int)(ctx->bytes[0] & 0x3f); /* Bytes in ctx->in */
127 byte *p = (byte *)ctx->in + count; /* First unused byte */
129 /* Set the first char of padding to 0x80. There is always room. */
132 /* Bytes of padding needed to make 56 bytes (-8..55) */
133 count = 56 - 1 - count;
136 { /* Padding forces an extra block */
137 memset(p, 0, count+8);
138 byteSwap(ctx->in, 16);
139 MD5Transform(ctx->buf, ctx->in);
143 memset(p, 0, count+8);
144 byteSwap(ctx->in, 14);
146 /* Append length in bits and transform */
147 ctx->in[14] = ctx->bytes[0] << 3;
148 ctx->in[15] = ctx->bytes[1] << 3 | ctx->bytes[0] >> 29;
149 MD5Transform(ctx->buf, ctx->in);
151 byteSwap(ctx->buf, 4);
152 memcpy(digest, ctx->buf, 16);
153 memset(ctx, 0, sizeof(ctx));
156 void MD5Transform(word32 buf[4], word32 const in[16])
158 register word32 a, b, c, d;
165 MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7);
166 MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12);
167 MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17);
168 MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22);
169 MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7);
170 MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12);
171 MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17);
172 MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22);
173 MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7);
174 MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12);
175 MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17);
176 MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22);
177 MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7);
178 MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12);
179 MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17);
180 MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22);
182 MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5);
183 MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9);
184 MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14);
185 MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20);
186 MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5);
187 MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9);
188 MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14);
189 MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20);
190 MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5);
191 MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9);
192 MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14);
193 MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20);
194 MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5);
195 MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9);
196 MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14);
197 MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20);
199 MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4);
200 MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11);
201 MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16);
202 MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23);
203 MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4);
204 MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11);
205 MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16);
206 MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23);
207 MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4);
208 MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11);
209 MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16);
210 MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23);
211 MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4);
212 MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11);
213 MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16);
214 MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23);
216 MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6);
217 MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10);
218 MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15);
219 MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21);
220 MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6);
221 MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10);
222 MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15);
223 MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21);
224 MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6);
225 MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);
226 MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15);
227 MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21);
228 MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6);
229 MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10);
230 MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);
231 MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21);
240 void MyMD5(void *dest, void *orig, int len)
242 struct MD5Context context;
245 MD5Update(&context, (const unsigned char*)orig, len);
246 MD5Final((unsigned char*)dest, &context);
250 void GenHash(const char* src, char* dest)
253 unsigned char bytes[16];
256 MyMD5((char*)bytes,(void*)src,strlen(src));
257 for (i = 0; i < 16; i++)
259 const char* xtab = "0123456789abcdef";
260 unsigned char lo = xtab[bytes[i] % 16];
261 unsigned char hi = xtab[bytes[i] / 16];
271 class cmd_mkpasswd : public command_t
274 cmd_mkpasswd () : command_t("MKPASSWD", 'o', 1)
276 this->source = "m_opermd5.so";
279 void Handle (const char** parameters, int pcnt, userrec *user)
282 GenHash(parameters[0],buffer);
283 WriteServ(user->fd,"NOTICE %s :MD5 hashed password for %s is %s",user->nick,parameters[0],buffer);
287 class ModuleOperMD5 : public Module
290 cmd_mkpasswd* mycommand;
293 ModuleOperMD5(Server* Me)
297 mycommand = new cmd_mkpasswd();
298 Srv->AddCommand(mycommand);
301 virtual ~ModuleOperMD5()
305 void Implements(char* List)
307 List[I_OnOperCompare] = 1;
310 virtual int OnOperCompare(const std::string &data, const std::string &input)
313 if (data.length() == 32) // if its 32 chars long, try it as an md5
315 GenHash(input.c_str(),buffer);
316 if (!strcasecmp(data.c_str(),buffer))
325 virtual Version GetVersion()
327 return Version(1,0,0,1,VF_VENDOR);
332 class ModuleOperMD5Factory : public ModuleFactory
335 ModuleOperMD5Factory()
339 ~ModuleOperMD5Factory()
343 virtual Module * CreateModule(Server* Me)
345 return new ModuleOperMD5(Me);
351 extern "C" void * init_module( void )
353 return new ModuleOperMD5Factory;