sal/android/libreofficekit-jni.c

   1 /* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  */
   9
  10 #include <fcntl.h>
  11 #include <errno.h>
  12 #include <stdio.h>
  13 #include <stdlib.h>
  14 #include <string.h>
  15 #include <sys/mman.h>
  16 #include <sys/stat.h>
  17 #include <sys/time.h>
  18 #include <sys/types.h>
  19 #include <time.h>
  20
  21 #include <jni.h>
  22
  23 #include <android/log.h>
  24
  25 #include <osl/detail/android-bootstrap.h>
  26
  27 #include <LibreOfficeKit/LibreOfficeKit.h>
  28
  29 #define LOGI(...) ((void)__android_log_print(ANDROID_LOG_INFO, "LibreOfficeKit", __VA_ARGS__))
  30 #define LOGE(...) ((void)__android_log_print(ANDROID_LOG_ERROR, "LibreOfficeKit", __VA_ARGS__))
  31
  32 /* These are valid / used in all apps. */
  33 extern const char* data_dir;
  34 extern const char* cache_dir;
  35 extern void* apk_file;
  36 extern int apk_file_size;
  37
  38 extern void Java_org_libreoffice_android_Bootstrap_putenv(JNIEnv* env, jobject clazz, jstring string);
  39 extern void Java_org_libreoffice_android_Bootstrap_redirect_1stdio(JNIEnv* env, jobject clazz, jboolean state);
  40
  41 extern LibreOfficeKit* libreofficekit_hook(const char* install_path);
  42
  43 static char *full_program_dir = NULL;
  44
  45 /// Call the same method from Bootstrap.
  46 __attribute__ ((visibility("default")))
  47 void
  48 Java_org_libreoffice_kit_LibreOfficeKit_putenv
  49     (JNIEnv* env, jobject clazz, jstring string)
  50 {
  51     Java_org_libreoffice_android_Bootstrap_putenv(env, clazz, string);
  52 }
  53
  54 /// Call the same method from Bootstrap.
  55 __attribute__ ((visibility("default")))
  56 void Java_org_libreoffice_kit_LibreOfficeKit_redirectStdio
  57     (JNIEnv* env, jobject clazz, jboolean state)
  58 {
  59     Java_org_libreoffice_android_Bootstrap_redirect_1stdio(env, clazz, state);
  60 }
  61
  62 /// Initialize the LibreOfficeKit.
  63 __attribute__ ((visibility("default")))
  64 jboolean Java_org_libreoffice_kit_LibreOfficeKit_initializeNative
  65     (JNIEnv* env, jobject clazz,
  66      jstring dataDir, jstring cacheDir, jstring apkFile)
  67 {
  68     struct stat st;
  69     int fd;
  70     const char *dataDirPath;
  71     const char *cacheDirPath;
  72     const char *apkFilePath;
  73
  74     const char program_dir[] = "/program";
  75     size_t data_dir_len;
  76
  77     (void) clazz;
  78
  79     dataDirPath = (*env)->GetStringUTFChars(env, dataDir, NULL);
  80     data_dir = strdup(dataDirPath);
  81     (*env)->ReleaseStringUTFChars(env, dataDir, dataDirPath);
  82
  83     cacheDirPath = (*env)->GetStringUTFChars(env, cacheDir, NULL);
  84     cache_dir = strdup(cacheDirPath);
  85     (*env)->ReleaseStringUTFChars(env, cacheDir, cacheDirPath);
  86
  87     apkFilePath =  (*env)->GetStringUTFChars(env, apkFile, NULL);
  88
  89     fd = open(apkFilePath, O_RDONLY);
  90     if (fd == -1) {
  91         LOGE("Could not open %s", apkFilePath);
  92         (*env)->ReleaseStringUTFChars(env, apkFile, apkFilePath);
  93         return JNI_FALSE;
  94     }
  95     if (fstat(fd, &st) == -1) {
  96         LOGE("Could not fstat %s", apkFilePath);
  97         close(fd);
  98         (*env)->ReleaseStringUTFChars(env, apkFile, apkFilePath);
  99         return JNI_FALSE;
 100     }
 101     apk_file = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, fd, 0);
 102     close(fd);
 103
 104     if (apk_file == MAP_FAILED) {
 105         LOGE("Could not mmap %s", apkFilePath);
 106         (*env)->ReleaseStringUTFChars(env, apkFile, apkFilePath);
 107         return JNI_FALSE;
 108     }
 109     apk_file_size = st.st_size;
 110
 111     (*env)->ReleaseStringUTFChars(env, apkFile, apkFilePath);
 112
 113     if (!setup_cdir())
 114     {
 115         LOGE("setup_cdir failed");
 116         return JNI_FALSE;
 117     }
 118
 119     if (!setup_assets_tree())
 120     {
 121         LOGE("setup_assets_tree failed");
 122         return JNI_FALSE;
 123     }
 124
 125     // Extract files from the .apk that can't be used mmapped directly from it
 126     extract_files(UNPACK_TREE, UNPACK_TREE, 0);
 127     extract_files(UNPACK_TREE_GZ, UNPACK_TREE_GZ, 1);
 128
 129     // LibreOfficeKit expects a path to the program/ directory
 130     free(full_program_dir);
 131     data_dir_len = strlen(data_dir);
 132     full_program_dir = malloc(data_dir_len + sizeof(program_dir));
 133
 134     strncpy(full_program_dir, data_dir, data_dir_len);
 135     strncpy(full_program_dir + data_dir_len, program_dir, sizeof(program_dir));
 136
 137     // Initialize LibreOfficeKit
 138     if (!libreofficekit_hook(full_program_dir))
 139     {
 140         LOGE("libreofficekit_hook returned null");
 141         return JNI_FALSE;
 142     }
 143
 144     LOGI("LibreOfficeKit successfully initialized");
 145
 146     return JNI_TRUE;
 147 }
 148
 149 __attribute__ ((visibility("default")))
 150 jobject Java_org_libreoffice_kit_LibreOfficeKit_getLibreOfficeKitHandle
 151     (JNIEnv* env, jobject clazz)
 152 {
 153     LibreOfficeKit* aOffice;
 154
 155     (void) env;
 156     (void) clazz;
 157
 158     aOffice = libreofficekit_hook(full_program_dir);
 159
 160     return (*env)->NewDirectByteBuffer(env, (void*) aOffice, sizeof(LibreOfficeKit));
 161 }
 162
 163 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */