jk_nsapi_plugin.c

Tomcat 4.1与WebServer集成组件的源代码包.

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 *                 The Apache Software License,  Version 1.1                 *
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 * ========================================================================= *
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 * Redistribution and use in source and binary forms,  with or without modi- *
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 * 1. Redistributions of source code  must retain the above copyright notice *
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 * 2. Redistributions  in binary  form  must  reproduce the  above copyright *
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 * 3. The end-user documentation  included with the redistribution,  if any, *
 *    must include the following acknowlegement:                             *
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 * 4. The names  "The  Jakarta  Project",  "Jk",  and  "Apache  Software     *
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/***************************************************************************
 * Description: NSAPI plugin for Netscape servers                          *
 * Author:      Gal Shachor <[e-mail]>                           *
 * Version:     $Revision: 1.8 $                                           *
 ***************************************************************************/


#include "jk_global.h"
#include "jk_util.h"
#include "jk_map.h"
#include "jk_pool.h"
#include "jk_service.h"
#include "jk_worker.h"

#include "nsapi.h"

#define URI_PATTERN "path"
#define DEFAULT_WORKER_NAME ("ajp13")

struct nsapi_private_data {
    jk_pool_t p;
    
    int request_started;

    pblock *pb;
    Session *sn;
    Request *rq;
};
typedef struct nsapi_private_data nsapi_private_data_t;

static int init_on_other_thread_is_done = JK_FALSE;
static int init_on_other_thread_is_ok = JK_FALSE;

static jk_logger_t *logger = NULL;
static jk_worker_env_t	 worker_env;

#ifdef NETWARE
int (*PR_IsSocketSecure)(SYS_NETFD *csd); /* pointer to PR_IsSocketSecure function */
#endif

static int JK_METHOD start_response(jk_ws_service_t *s,
                                    int status,
                                    const char *reason,
                                    const char * const *header_names,
                                    const char * const *header_values,
                                    unsigned num_of_headers);

static int JK_METHOD ws_read(jk_ws_service_t *s,
                             void *b,
                             unsigned l,
                             unsigned *a);

static int JK_METHOD ws_write(jk_ws_service_t *s,
                              const void *b,
                              unsigned l);

NSAPI_PUBLIC int jk_init(pblock *pb, 
                         Session *sn, 
                         Request *rq);

NSAPI_PUBLIC void jk_term(void *p);

NSAPI_PUBLIC int jk_service(pblock *pb,
                            Session *sn,
                            Request *rq);

static int init_ws_service(nsapi_private_data_t *private_data,
                           jk_ws_service_t *s);

static int setup_http_headers(nsapi_private_data_t *private_data,
                              jk_ws_service_t *s);

static void init_workers_on_other_threads(void *init_d) 
{
    jk_map_t *init_map = (jk_map_t *)init_d;
    /* we add the URI->WORKER MAP since workers using AJP14 will feed it */
	/* but where are they here in Netscape ? */
    if(wc_open(init_map, &worker_env, logger)) {
        init_on_other_thread_is_ok = JK_TRUE;
    } else {
        jk_log(logger, JK_LOG_EMERG, "In init_workers_on_other_threads, failed\n");
    }

    init_on_other_thread_is_done = JK_TRUE;
}

static int JK_METHOD start_response(jk_ws_service_t *s,
                                    int status,
                                    const char *reason,
                                    const char * const *header_names,
                                    const char * const *header_values,
                                    unsigned num_of_headers)
{
    if(s && s->ws_private) {
        nsapi_private_data_t *p = s->ws_private;
        if(!p->request_started) {
            unsigned i;

            p->request_started = JK_TRUE;

            /* Remove "old" content type */
            param_free(pblock_remove("content-type", p->rq->srvhdrs));

            if(num_of_headers) {
                for (i = 0 ; i < (int)num_of_headers ; i++) {
                    pblock_nvinsert(header_names[i],
                                    header_values[i],
                                    p->rq->srvhdrs);    
                }
            } else {
                pblock_nvinsert("content-type",
                                "text/plain",
                                p->rq->srvhdrs);    
            }

            protocol_status(p->sn,
                            p->rq,
                            status,
                            (char *)reason);

            protocol_start_response(p->sn, p->rq);
        }
        return JK_TRUE;

    }
    return JK_FALSE;
}

static int JK_METHOD ws_read(jk_ws_service_t *s,
                             void *b,
                             unsigned l,
                             unsigned *a)
{
    if(s && s->ws_private && b && a) {
        nsapi_private_data_t *p = s->ws_private;
        
        *a = 0;
        if(l) {
            char *buf = b;
            unsigned i;
            netbuf *inbuf = p->sn->inbuf;

/* Until we get a service pack for NW5.1 and earlier that has the latest */
/* Enterprise Server, we have to go through the else version of this code*/
#if defined(netbuf_getbytes) && !defined(NETWARE) 
            i = netbuf_getbytes(inbuf, b, l);
            if(NETBUF_EOF == i || NETBUF_ERROR == i) {
                return JK_FALSE;
            }

#else 
            int ch;
            for(i = 0 ; i < l ; i++) {
                ch = netbuf_getc(inbuf);           
                /*
                 * IO_EOF is 0 (zero) which is a very reasonable byte
                 * when it comes to binary data. So we are not breaking 
                 * out of the read loop when reading it.
                 *
                 * We are protected from an infinit loop by the Java part of
                 * Tomcat.
                 */
                if(IO_ERROR == ch) {
                    break;
                }

                buf[i] = ch;
            }

            if(0 == i) {
                return JK_FALSE;
            }
#endif
            *a = i;

        }
        return JK_TRUE;
    }
    return JK_FALSE;
}

static int JK_METHOD ws_write(jk_ws_service_t *s,
                              const void *b,
                              unsigned l)
{
    if(s && s->ws_private && b) {
        nsapi_private_data_t *p = s->ws_private;

        if(l) {
            if(!p->request_started) {
                start_response(s, 200, NULL, NULL, NULL, 0);
            }

            if(net_write(p->sn->csd, (char *)b, (int)l) == IO_ERROR) {
                return JK_FALSE;
            }
        }

        return JK_TRUE;

    }
    return JK_FALSE;
}

NSAPI_PUBLIC int jk_init(pblock *pb, 
                         Session *sn, 
                         Request *rq)
{
    char *worker_prp_file = pblock_findval(JK_WORKER_FILE_TAG, pb); 
    char *log_level_str = pblock_findval(JK_LOG_LEVEL_TAG, pb); 
    char *log_file = pblock_findval(JK_LOG_FILE_TAG, pb); 

    int rc = REQ_ABORTED;
    jk_map_t *init_map;

    fprintf(stderr, "In jk_init.\n   Worker file = %s.\n   Log level = %s.\n   Log File = %s\n",worker_prp_file, log_level_str,  log_file);