comparison: src/server/plugins/java/jvm.c
src/server/plugins/java/jvm.c
- changeset 84
- afd57ce39ec9
- child 415
- d938228c382e
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| 83:28433f06d5ee | 84:afd57ce39ec9 |
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| 1 /* | |
| 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. | |
| 3 * | |
| 4 * Copyright 2013 Olaf Wintermann. All rights reserved. | |
| 5 * | |
| 6 * Redistribution and use in source and binary forms, with or without | |
| 7 * modification, are permitted provided that the following conditions are met: | |
| 8 * | |
| 9 * 1. Redistributions of source code must retain the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer. | |
| 11 * | |
| 12 * 2. Redistributions in binary form must reproduce the above copyright | |
| 13 * notice, this list of conditions and the following disclaimer in the | |
| 14 * documentation and/or other materials provided with the distribution. | |
| 15 * | |
| 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
| 17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE | |
| 20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
| 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
| 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
| 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
| 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
| 26 * POSSIBILITY OF SUCH DAMAGE. | |
| 27 */ | |
| 28 | |
| 29 #include <stdio.h> | |
| 30 #include <stdlib.h> | |
| 31 #include <dlfcn.h> | |
| 32 | |
| 33 #include <ucx/map.h> | |
| 34 | |
| 35 #include "jvm.h" | |
| 36 #include "daemon/request.h" | |
| 37 | |
| 38 #ifdef __i386 | |
| 39 #define LIBJVM "/usr/java/jre/lib/i386/server/libjvm.so" | |
| 40 #else | |
| 41 | |
| 42 #endif | |
| 43 | |
| 44 static JNIEnv *env = NULL; | |
| 45 static JavaVM *jvm = NULL; | |
| 46 | |
| 47 static jobject plugin_instance = NULL; | |
| 48 static jmethodID load_jmodules_method = NULL; | |
| 49 static jmethodID exec_method = NULL; | |
| 50 | |
| 51 int jvm_init(pblock *pb, Session *sn, Request *rq) { | |
| 52 // load lib | |
| 53 void *lib = dlopen(LIBJVM, RTLD_GLOBAL | RTLD_NOW); | |
| 54 if(!lib) { | |
| 55 log_ereport(LOG_FAILURE, "Cannot load libjvm.so"); | |
| 56 return REQ_ABORTED; | |
| 57 } | |
| 58 | |
| 59 // get symbol | |
| 60 void *sym = dlsym(lib, "JNI_CreateJavaVM"); | |
| 61 if(sym == NULL) { | |
| 62 log_ereport( | |
| 63 LOG_FAILURE, | |
| 64 "Cannot get symbol JNI_CreateJavaVM from lib"); | |
| 65 return REQ_ABORTED; | |
| 66 } | |
| 67 | |
| 68 // create JVM | |
| 69 JavaVMInitArgs vm_args; | |
| 70 JavaVMOption options[2]; | |
| 71 options[0].optionString = "-Djava.class.path=lib/wsrt.jar"; | |
| 72 options[1].optionString = "-Djava.library.path=lib/"; | |
| 73 vm_args.version = JNI_VERSION_1_6; | |
| 74 vm_args.options = options; | |
| 75 vm_args.nOptions = 2; | |
| 76 vm_args.ignoreUnrecognized = JNI_TRUE; | |
| 77 | |
| 78 CreateJVMFunc create_jvm = (CreateJVMFunc)sym; | |
| 79 if(create_jvm(&jvm, (void**)&env, &vm_args)) { | |
| 80 dlclose(lib); | |
| 81 log_ereport(LOG_FAILURE, "Cannot create JVM"); | |
| 82 } | |
| 83 | |
| 84 // load classes and methods | |
| 85 jclass cls = (*env)->FindClass(env, "webserver/ServerPlugin"); | |
| 86 if(!cls) { | |
| 87 log_ereport( | |
| 88 LOG_FAILURE, | |
| 89 "jvm-init: missing or broken wsrt.jar"); | |
| 90 log_ereport( | |
| 91 LOG_FAILURE, | |
| 92 "jvm-init: missing class webserver.ServerPlugin"); | |
| 93 return REQ_ABORTED; | |
| 94 } | |
| 95 | |
| 96 jmethodID constr = (*env)->GetMethodID(env, cls, "<init>", "()V"); | |
| 97 if(!constr) { | |
| 98 log_ereport( | |
| 99 LOG_FAILURE, | |
| 100 "jvm-init: missing or broken wsrt.jar"); | |
| 101 log_ereport( | |
| 102 LOG_FAILURE, | |
| 103 "jvm-init: missing constructor"); | |
| 104 return REQ_ABORTED; | |
| 105 } | |
| 106 plugin_instance = (*env)->NewObject(env, cls, constr); | |
| 107 if(!plugin_instance) { | |
| 108 log_ereport( | |
| 109 LOG_FAILURE, | |
| 110 "jvm-init: cannot create ServerPlugin instance"); | |
| 111 return REQ_ABORTED; | |
| 112 } | |
| 113 | |
| 114 // methods | |
| 115 load_jmodules_method = (*env)->GetMethodID( | |
| 116 env, | |
| 117 cls, | |
| 118 "loadModule", | |
| 119 "(Ljava/lang/String;Ljava/lang/String;)I"); | |
| 120 if(!load_jmodules_method) { | |
| 121 log_ereport(LOG_FAILURE, "jvm-init: missing or broken wsrt.jar"); | |
| 122 log_ereport(LOG_FAILURE, "jvm-init: missing method (loadModule)"); | |
| 123 return REQ_ABORTED; | |
| 124 } | |
| 125 | |
| 126 exec_method = (*env)->GetMethodID( | |
| 127 env, | |
| 128 cls, | |
| 129 "exec", | |
| 130 "(I)I"); | |
| 131 if(!exec_method) { | |
| 132 log_ereport(LOG_FAILURE, "jvm-init: missing or broken wsrt.jar"); | |
| 133 log_ereport(LOG_FAILURE, "jvm-init: missing method (exec)"); | |
| 134 return REQ_ABORTED; | |
| 135 } | |
| 136 | |
| 137 | |
| 138 return REQ_PROCEED; | |
| 139 } | |
| 140 | |
| 141 int load_jmodules(pblock *pb, Session *sn, Request *rq) { | |
| 142 char *jar = pblock_findval("jar", pb); | |
| 143 char *classes = pblock_findval("classes", pb); | |
| 144 | |
| 145 if(!jar || !classes) { | |
| 146 log_ereport( | |
| 147 LOG_MISCONFIG, | |
| 148 "load-jmodule: missing parameters (jar, classes)"); | |
| 149 return REQ_ABORTED; | |
| 150 } | |
| 151 | |
| 152 // check jvm | |
| 153 if(!plugin_instance) { | |
| 154 log_ereport( | |
| 155 LOG_FAILURE, | |
| 156 "load-jmodules: java plugin not properly loaded"); | |
| 157 return REQ_ABORTED; | |
| 158 } | |
| 159 if(!load_jmodules_method) { | |
| 160 log_ereport( | |
| 161 LOG_FAILURE, | |
| 162 "load-jmodules: java plugin not properly loaded"); | |
| 163 return REQ_ABORTED; | |
| 164 } | |
| 165 | |
| 166 // load java module | |
| 167 jstring jar_param = (*env)->NewStringUTF(env, jar); | |
| 168 jstring classes_param = (*env)->NewStringUTF(env, classes); | |
| 169 | |
| 170 jint ret = (*env)->CallIntMethod( | |
| 171 env, | |
| 172 plugin_instance, | |
| 173 load_jmodules_method, | |
| 174 jar_param, | |
| 175 classes_param); | |
| 176 | |
| 177 // free stuff | |
| 178 (*env)->DeleteLocalRef(env, jar_param); | |
| 179 (*env)->DeleteLocalRef(env, classes_param); | |
| 180 | |
| 181 return ret; | |
| 182 } | |
| 183 | |
| 184 int jexec(pblock *pb, Session *sn, Request *rq) { | |
| 185 return REQ_NOACTION; | |
| 186 } | |
| 187 | |
| 188 int jvm_method_exec(FuncStruct *func, pblock *pb, Session *sn, Request *rq) { | |
| 189 printf("jvm_method_exec: %d\n", func); | |
| 190 NSAPIRequest *nrq = (NSAPIRequest*)rq; | |
| 191 | |
| 192 JNIEnv *e = NULL; | |
| 193 int r = (*jvm)->AttachCurrentThread(jvm, (void**)&e, NULL); | |
| 194 | |
| 195 jint index = (jint)func->exec_data; | |
| 196 printf("(C) exec: %d\n", index); | |
| 197 | |
| 198 jint ret = (*env)->CallIntMethod( | |
| 199 env, | |
| 200 plugin_instance, | |
| 201 exec_method, | |
| 202 index); | |
| 203 | |
| 204 return ret; | |
| 205 } | |
| 206 |
