[thirdparty/cups.git] / cups / md5passwd.c

/*
 * "$Id: md5passwd.c,v 1.9 2002/12/17 18:56:42 swdev Exp $"
 *
 *   MD5 password support for the Common UNIX Printing System (CUPS).
 *
 *   Copyright 1997-2003 by Easy Software Products.
 *
 *   These coded instructions, statements, and computer programs are the
 *   property of Easy Software Products and are protected by Federal
 *   copyright law.  Distribution and use rights are outlined in the file
 *   "LICENSE.txt" which should have been included with this file.  If this
 *   file is missing or damaged please contact Easy Software Products
 *   at:
 *
 *       Attn: CUPS Licensing Information
 *       Easy Software Products
 *       44141 Airport View Drive, Suite 204
 *       Hollywood, Maryland 20636-3111 USA
 *
 *       Voice: (301) 373-9603
 *       EMail: cups-info@cups.org
 *         WWW: http://www.cups.org
 *
 *   This file is subject to the Apple OS-Developed Software exception.
 *
 * Contents:
 *
 *   httpMD5()       - Compute the MD5 sum of the username:group:password.
 *   httpMD5Nonce()  - Combine the MD5 sum of the username, group, and password
 *                     with the server-supplied nonce value.
 *   httpMD5String() - Convert an MD5 sum to a character string.
 */

/*
 * Include necessary headers...
 */

#include "http.h"
#include "string.h"


/*
 * 'httpMD5()' - Compute the MD5 sum of the username:group:password.
 */

char *				/* O - MD5 sum */
httpMD5(const char *username,	/* I - User name */
        const char *realm,	/* I - Realm name */
        const char *passwd,	/* I - Password string */
	char       md5[33])	/* O - MD5 string */
{
  md5_state_t	state;		/* MD5 state info */
  md5_byte_t	sum[16];	/* Sum data */
  char		line[256];	/* Line to sum */


 /*
  * Compute the MD5 sum of the user name, group name, and password.
  */

  snprintf(line, sizeof(line), "%s:%s:%s", username, realm, passwd);
  md5_init(&state);
  md5_append(&state, (md5_byte_t *)line, strlen(line));
  md5_finish(&state, sum);

 /*
  * Return the sum...
  */

  return (httpMD5String(sum, md5));
}


/*
 * 'httpMD5Final()' - Combine the MD5 sum of the username, group, and password
 *                    with the server-supplied nonce value, method, and
 *                    request-uri.
 */

char *					/* O - New sum */
httpMD5Final(const char *nonce,		/* I - Server nonce value */
             const char *method,	/* I - METHOD (GET, POST, etc.) */
	     const char *resource,	/* I - Resource path */
             char       md5[33])	/* IO - MD5 sum */
{
  md5_state_t	state;			/* MD5 state info */
  md5_byte_t	sum[16];		/* Sum data */
  char		line[1024];		/* Line of data */
  char		a2[33];			/* Hash of method and resource */


 /*
  * First compute the MD5 sum of the method and resource...
  */

  snprintf(line, sizeof(line), "%s:%s", method, resource);
  md5_init(&state);
  md5_append(&state, (md5_byte_t *)line, strlen(line));
  md5_finish(&state, sum);
  httpMD5String(sum, a2);

 /*
  * Then combine A1 (MD5 of username, realm, and password) with the nonce
  * and A2 (method + resource) values to get the final MD5 sum for the
  * request...
  */

  snprintf(line, sizeof(line), "%s:%s:%s", md5, nonce, a2);

  md5_init(&state);
  md5_append(&state, (md5_byte_t *)line, strlen(line));
  md5_finish(&state, sum);

  return (httpMD5String(sum, md5));
}


/*
 * 'httpMD5String()' - Convert an MD5 sum to a character string.
 */

char *					/* O - MD5 sum in hex */
httpMD5String(const md5_byte_t *sum,	/* I - MD5 sum data */
              char             md5[33])	/* O - MD5 sum in hex */
{
  int		i;			/* Looping var */
  char		*md5ptr;		/* Pointer into MD5 string */
  static char	*hex = "0123456789abcdef";
					/* Hex digits */


 /*
  * Convert the MD5 sum to hexadecimal...
  */

  for (i = 16, md5ptr = md5; i > 0; i --, sum ++)
  {
    *md5ptr++ = hex[*sum >> 4];
    *md5ptr++ = hex[*sum & 15];
  }

  *md5ptr = '\0';

  return (md5);
}


/*
 * End of "$Id: md5passwd.c,v 1.9 2002/12/17 18:56:42 swdev Exp $".
 */
Commit	Line	Data
83e740a5	1	/*
997fbfa7	2	* "$Id: md5passwd.c,v 1.9 2002/12/17 18:56:42 swdev Exp $"
83e740a5	3	*
	4	* MD5 password support for the Common UNIX Printing System (CUPS).
	5	*
997fbfa7	6	* Copyright 1997-2003 by Easy Software Products.
83e740a5	7	*
	8	* These coded instructions, statements, and computer programs are the
	9	* property of Easy Software Products and are protected by Federal
	10	* copyright law. Distribution and use rights are outlined in the file
	11	* "LICENSE.txt" which should have been included with this file. If this
	12	* file is missing or damaged please contact Easy Software Products
	13	* at:
	14	*
	15	* Attn: CUPS Licensing Information
	16	* Easy Software Products
	17	* 44141 Airport View Drive, Suite 204
	18	* Hollywood, Maryland 20636-3111 USA
	19	*
	20	* Voice: (301) 373-9603
	21	* EMail: cups-info@cups.org
	22	* WWW: http://www.cups.org
	23	*
34410ef2	24	* This file is subject to the Apple OS-Developed Software exception.
34410ef2	25	*
83e740a5	26	* Contents:
83e740a5	27	*
9053b0e0	28	* httpMD5() - Compute the MD5 sum of the username:group:password.
	29	* httpMD5Nonce() - Combine the MD5 sum of the username, group, and password
	30	* with the server-supplied nonce value.
	31	* httpMD5String() - Convert an MD5 sum to a character string.
83e740a5	32	*/
	33
	34	/*
	35	* Include necessary headers...
	36	*/
	37
	38	#include "http.h"
	39	#include "string.h"
	40
	41
	42	/*
	43	* 'httpMD5()' - Compute the MD5 sum of the username:group:password.
	44	*/
	45
	46	char * /* O - MD5 sum */
	47	httpMD5(const char username, / I - User name */
	48	const char realm, / I - Realm name */
	49	const char passwd, / I - Password string */
	50	char md5[33]) /* O - MD5 string */
	51	{
	52	md5_state_t state; /* MD5 state info */
	53	md5_byte_t sum[16]; /* Sum data */
	54	char line[256]; /* Line to sum */
	55
	56
	57	/*
	58	* Compute the MD5 sum of the user name, group name, and password.
	59	*/
	60
04de52f8	61	snprintf(line, sizeof(line), "%s:%s:%s", username, realm, passwd);
83e740a5	62	md5_init(&state);
	63	md5_append(&state, (md5_byte_t *)line, strlen(line));
	64	md5_finish(&state, sum);
	65
	66	/*
	67	* Return the sum...
	68	*/
	69
	70	return (httpMD5String(sum, md5));
	71	}
	72
	73
	74	/*
	75	* 'httpMD5Final()' - Combine the MD5 sum of the username, group, and password
	76	* with the server-supplied nonce value, method, and
	77	* request-uri.
	78	*/
	79
	80	char * /* O - New sum */
	81	httpMD5Final(const char nonce, / I - Server nonce value */
	82	const char method, / I - METHOD (GET, POST, etc.) */
	83	const char resource, / I - Resource path */
	84	char md5[33]) /* IO - MD5 sum */
	85	{
	86	md5_state_t state; /* MD5 state info */
	87	md5_byte_t sum[16]; /* Sum data */
	88	char line[1024]; /* Line of data */
	89	char a2[33]; /* Hash of method and resource */
	90
	91
	92	/*
	93	* First compute the MD5 sum of the method and resource...
	94	*/
	95
04de52f8	96	snprintf(line, sizeof(line), "%s:%s", method, resource);
83e740a5	97	md5_init(&state);
	98	md5_append(&state, (md5_byte_t *)line, strlen(line));
	99	md5_finish(&state, sum);
	100	httpMD5String(sum, a2);
	101
	102	/*
	103	* Then combine A1 (MD5 of username, realm, and password) with the nonce
	104	* and A2 (method + resource) values to get the final MD5 sum for the
	105	* request...
	106	*/
	107
90e69602	108	snprintf(line, sizeof(line), "%s:%s:%s", md5, nonce, a2);
83e740a5	109
	110	md5_init(&state);
	111	md5_append(&state, (md5_byte_t *)line, strlen(line));
	112	md5_finish(&state, sum);
	113
	114	return (httpMD5String(sum, md5));
	115	}
	116
	117
	118	/*
	119	* 'httpMD5String()' - Convert an MD5 sum to a character string.
	120	*/
	121
	122	char * /* O - MD5 sum in hex */
	123	httpMD5String(const md5_byte_t sum, / I - MD5 sum data */
	124	char md5[33]) /* O - MD5 sum in hex */
	125	{
	126	int i; /* Looping var */
	127	char md5ptr; / Pointer into MD5 string */
	128	static char *hex = "0123456789abcdef";
	129	/* Hex digits */
	130
	131
	132	/*
	133	* Convert the MD5 sum to hexadecimal...
	134	*/
	135
	136	for (i = 16, md5ptr = md5; i > 0; i --, sum ++)
	137	{
	138	md5ptr++ = hex[sum >> 4];
	139	md5ptr++ = hex[sum & 15];
	140	}
	141
	142	*md5ptr = '\0';
	143
	144	return (md5);
	145	}
	146
	147
	148	/*
997fbfa7	149	* End of "$Id: md5passwd.c,v 1.9 2002/12/17 18:56:42 swdev Exp $".
83e740a5	150	*/