jk_ajp14.c

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/* -*- Mode: C; tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil-*- */
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 * 4. The names  "The  Jakarta  Project",  "Jk",  and  "Apache  Software     *
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 * POSSIBILITY OF SUCH DAMAGE.                                               *
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 * This software  consists of voluntary  contributions made  by many indivi- *
 * duals on behalf of the  Apache Software Foundation.  For more information *
 * on the Apache Software Foundation, please see <http://www.apache.org/>.   *
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/***************************************************************************
 * Description: Next generation bi-directional protocol handler.           *
 * Author:      Henri Gomez <[e-mail]>                               *
 * Version:     $Revision: 1.16 $                                           *
 ***************************************************************************/


#include "jk_global.h"
#include "jk_util.h"
#include "jk_map.h"
#include "jk_ajp_common.h"
#include "jk_ajp14.h"
#include "jk_md5.h"

/*
 * Compute the MD5 with ENTROPY / SECRET KEY
 */

void ajp14_compute_md5(jk_login_service_t *s, 
                       jk_logger_t        *l)
{
	jk_md5((const unsigned char *)s->entropy, (const unsigned char *)s->secret_key, s->computed_key);

	jk_log(l, JK_LOG_DEBUG, "Into ajp14_compute_md5 (%s/%s) -> (%s)\n", s->entropy, s->secret_key, s->computed_key);
}


/*
 * Build the Login Init Command
 *
 * +-------------------------+---------------------------+---------------------------+
 * | LOGIN INIT CMD (1 byte) | NEGOCIATION DATA (32bits) | WEB SERVER INFO (CString) |
 * +-------------------------+---------------------------+---------------------------+
 *
 */

int ajp14_marshal_login_init_into_msgb(jk_msg_buf_t       *msg,
                                       jk_login_service_t *s,
                                       jk_logger_t        *l)
{
    jk_log(l, JK_LOG_DEBUG, "Into ajp14_marshal_login_init_into_msgb\n");
    
    /* To be on the safe side */
    jk_b_reset(msg);

    /*
     * LOGIN
     */
    if (jk_b_append_byte(msg, AJP14_LOGINIT_CMD)) 
        return JK_FALSE;

	/*
     * NEGOCIATION FLAGS
     */
     if (jk_b_append_long(msg, s->negociation))
		return JK_FALSE;

	/*
	 * WEB-SERVER NAME
  	 */
     if (jk_b_append_string(msg, s->web_server_name)) {
        jk_log(l, JK_LOG_ERROR, "Error ajp14_marshal_login_init_into_msgb - Error appending the web_server_name string\n");
        return JK_FALSE;
    }

    return JK_TRUE;
}


/*
 * Decode the Login Seed Command
 *
 * +-------------------------+---------------------------+
 * | LOGIN SEED CMD (1 byte) | MD5 of entropy (32 chars) |
 * +-------------------------+---------------------------+
 *
 */

int ajp14_unmarshal_login_seed(jk_msg_buf_t       *msg,
                               jk_login_service_t *s,
                               jk_logger_t        *l)
{
    if (jk_b_get_bytes(msg, (unsigned char *)s->entropy, AJP14_ENTROPY_SEED_LEN) < 0) {
        jk_log(l, JK_LOG_ERROR, "Error ajp14_unmarshal_login_seed - can't get seed\n");
        return JK_FALSE;
    }

	s->entropy[AJP14_ENTROPY_SEED_LEN] = 0;	/* Just to have a CString */
	return JK_TRUE;
}

/*
 * Build the Login Computed Command
 *
 * +-------------------------+---------------------------------------+
 * | LOGIN COMP CMD (1 byte) | MD5 of RANDOM + SECRET KEY (32 chars) |
 * +-------------------------+---------------------------------------+
 *
 */

int ajp14_marshal_login_comp_into_msgb(jk_msg_buf_t       *msg,
                                       jk_login_service_t *s,
                                       jk_logger_t        *l)
{
    jk_log(l, JK_LOG_DEBUG, "Into ajp14_marshal_login_comp_into_msgb\n");
    
    /* To be on the safe side */
    jk_b_reset(msg);

    /*
     * LOGIN
     */
    if (jk_b_append_byte(msg, AJP14_LOGCOMP_CMD)) 
        return JK_FALSE;

	/*
	 * COMPUTED-SEED
  	 */
     if (jk_b_append_bytes(msg, (const unsigned char *)s->computed_key, AJP14_COMPUTED_KEY_LEN)) {
        jk_log(l, JK_LOG_ERROR, "Error ajp14_marshal_login_comp_into_msgb - Error appending the COMPUTED MD5 bytes\n");
        return JK_FALSE;
    }

    return JK_TRUE;
}


/*
 * Decode the LogOk Command
 *
 * +--------------------+------------------------+-------------------------------+
 * | LOGOK CMD (1 byte) | NEGOCIED DATA (32bits) | SERVLET ENGINE INFO (CString) |
 * +--------------------+------------------------+-------------------------------+
 *
 */

int ajp14_unmarshal_log_ok(jk_msg_buf_t       *msg,
                           jk_login_service_t *s,
                           jk_logger_t        *l)
{
	unsigned long 	nego;
	char *			sname;

	nego = jk_b_get_long(msg);

	if (nego == 0xFFFFFFFF) {
        jk_log(l, JK_LOG_ERROR, "Error ajp14_unmarshal_log_ok - can't get negociated data\n");
        return JK_FALSE;
    }

	sname = (char *)jk_b_get_string(msg);

	if (! sname) {
		jk_log(l, JK_LOG_ERROR, "Error ajp14_unmarshal_log_ok - can't get servlet engine name\n");
		return JK_FALSE;
	}
	
	if (s->servlet_engine_name)			/* take care of removing previously allocated data */
		free(s->servlet_engine_name);

	s->servlet_engine_name = strdup(sname);

	if (! s->servlet_engine_name) {
		jk_log(l, JK_LOG_ERROR, "Error ajp14_unmarshal_log_ok - can't malloc servlet engine name\n");
		return JK_FALSE;
	}

	return JK_TRUE;
}


/*
 * Decode the Log Nok Command 
 *
 * +---------------------+-----------------------+
 * | LOGNOK CMD (1 byte) | FAILURE CODE (32bits) |
 * +---------------------+-----------------------+
 *
 */

int ajp14_unmarshal_log_nok(jk_msg_buf_t *msg,
                            jk_logger_t  *l)
{
	unsigned long   status;

    jk_log(l, JK_LOG_DEBUG, "Into ajp14_unmarshal_log_nok\n");

	status = jk_b_get_long(msg);

    if (status == 0xFFFFFFFF) {
        jk_log(l, JK_LOG_ERROR, "Error ajp14_unmarshal_log_nok - can't get failure code\n");
        return JK_FALSE;
    }

	jk_log(l, JK_LOG_INFO, "Can't Log with servlet engine - code %08lx", status);
	return JK_TRUE;
}


/* 
 * Build the Shutdown Cmd
 *
 * +-----------------------+---------------------------------------+
 * | SHUTDOWN CMD (1 byte) | MD5 of RANDOM + SECRET KEY (32 chars) |
 * +-----------------------+---------------------------------------+
 *
 */

int ajp14_marshal_shutdown_into_msgb(jk_msg_buf_t       *msg,
                                     jk_login_service_t *s,
                                     jk_logger_t        *l)
{
    jk_log(l, JK_LOG_DEBUG, "Into ajp14_marshal_shutdown_into_msgb\n");

    /* To be on the safe side */
    jk_b_reset(msg);

    /*
     * SHUTDOWN CMD
     */
    if (jk_b_append_byte(msg, AJP14_SHUTDOWN_CMD))
        return JK_FALSE;

    /*
     * COMPUTED-SEED
     */
     if (jk_b_append_bytes(msg, (const unsigned char *)s->computed_key, AJP14_COMPUTED_KEY_LEN)) {
        jk_log(l, JK_LOG_ERROR, "Error ajp14_marshal_shutdown_into_msgb - Error appending the COMPUTED MD5 bytes\n");
        return JK_FALSE;
    }

	return JK_TRUE;
}

/*
 * Decode the Shutdown Nok Command
 *
 * +----------------------+-----------------------+
 * | SHUTNOK CMD (1 byte) | FAILURE CODE (32bits) |
 * +----------------------+-----------------------+
 *
 */
int ajp14_unmarshal_shutdown_nok(jk_msg_buf_t *msg,
                                 jk_logger_t  *l)
{
    unsigned long   status;

    jk_log(l, JK_LOG_DEBUG, "Into ajp14_unmarshal_shutdown_nok\n");

    status = jk_b_get_long(msg);

    if (status == 0xFFFFFFFF) {
        jk_log(l, JK_LOG_ERROR, "Error ajp14_unmarshal_shutdown_nok - can't get failure code\n");
        return JK_FALSE;
    }

    jk_log(l, JK_LOG_INFO, "Can't shutdown servlet engine - code %08lx", status);
    return JK_TRUE;
}

/*
 * Build the Unknown Packet
 *
 * +-----------------------------+---------------------------------+------------------------------+
 * | UNKNOWN PACKET CMD (1 byte) | UNHANDLED MESSAGE SIZE (16bits) | UNHANDLED MESSAGE (bytes...) |
 * +-----------------------------+---------------------------------+------------------------------+