[7d3ae3e] | 1 | /* |
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| 2 | * Estonian ID card plugin for web browsers |
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| 3 | * |
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| 4 | * Copyright (C) 2010-2011 Codeborne <info@codeborne.com> |
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| 5 | * |
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| 6 | * This is free software; you can redistribute it and/or |
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| 7 | * modify it under the terms of the GNU Lesser General Public |
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| 8 | * License as published by the Free Software Foundation; either |
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| 9 | * version 2.1 of the License, or (at your option) any later version. |
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| 10 | * |
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| 11 | * This software is distributed in the hope that it will be useful, |
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 14 | * Lesser General Public License for more details. |
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| 15 | * |
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| 16 | * You should have received a copy of the GNU Lesser General Public |
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| 17 | * License along with this library; if not, write to the Free Software |
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| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 19 | * |
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| 20 | */ |
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| 21 | |
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| 22 | #include <stdlib.h> |
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| 23 | #include <stdio.h> |
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| 24 | #include <string.h> |
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| 25 | #include <ctype.h> |
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| 26 | |
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| 27 | #include "version.h" |
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| 28 | #include "plugin.h" |
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| 29 | #include "plugin-class.h" |
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| 30 | #include "esteid_mime_types.h" |
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| 31 | #include "esteid_misc.h" |
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| 32 | |
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| 33 | //#define PLUGIN_NAME "EstEID Firefox plug-in" |
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| 34 | //#define PLUGIN_DESCRIPTION "Allows digital signing with Estonian ID cards" |
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| 35 | |
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| 36 | NPNetscapeFuncs* browserFunctions; |
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| 37 | |
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| 38 | extern char EstEID_error[1024]; |
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| 39 | extern int EstEID_errorCode; |
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| 40 | extern bool allowedSite; |
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| 41 | |
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| 42 | bool isSameIdentifier(NPIdentifier identifier, const char* name) { |
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| 43 | return browserFunctions->getstringidentifier(name) == identifier; |
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| 44 | } |
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| 45 | |
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| 46 | bool copyStringToNPVariant(const char *string, NPVariant *variant) { |
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| 47 | char *out = (char *)browserFunctions->memalloc(strlen(string) + 1); |
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| 48 | strcpy(out, string); |
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| 49 | STRINGZ_TO_NPVARIANT(out, *variant); |
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| 50 | return true; |
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| 51 | } |
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| 52 | |
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| 53 | NPUTF8* createStringFromNPVariant(const NPVariant *variant) { |
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| 54 | if (!NPVARIANT_IS_STRING(*variant)) { |
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| 55 | return strdup(""); |
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| 56 | } |
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| 57 | size_t length = NPVARIANT_TO_STRING(*variant).UTF8Length; |
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| 58 | NPUTF8 *result = (NPUTF8 *)malloc(length + 1); |
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| 59 | memcpy(result, NPVARIANT_TO_STRING(*variant).UTF8Characters, length); |
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| 60 | result[length] = '\0'; |
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| 61 | return result; |
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| 62 | } |
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| 63 | |
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| 64 | NP_EXPORT(NPError) NP_GetEntryPoints(NPPluginFuncs* pluginFuncs) { |
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| 65 | EstEID_log(""); |
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| 66 | pluginFuncs->version = 11; |
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| 67 | pluginFuncs->size = sizeof(*pluginFuncs); |
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| 68 | pluginFuncs->newp = NPP_New; |
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| 69 | pluginFuncs->destroy = NPP_Destroy; |
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| 70 | pluginFuncs->setwindow = NPP_SetWindow; |
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| 71 | pluginFuncs->newstream = NPP_NewStream; |
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| 72 | pluginFuncs->destroystream = NPP_DestroyStream; |
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| 73 | pluginFuncs->asfile = NPP_StreamAsFile; |
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| 74 | pluginFuncs->writeready = NPP_WriteReady; |
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| 75 | pluginFuncs->write = NPP_Write; |
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| 76 | pluginFuncs->print = NPP_Print; |
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| 77 | pluginFuncs->event = NPP_HandleEvent; |
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| 78 | pluginFuncs->urlnotify = NPP_URLNotify; |
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| 79 | pluginFuncs->getvalue = NPP_GetValue; |
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| 80 | pluginFuncs->setvalue = NPP_SetValue; |
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| 81 | return NPERR_NO_ERROR; |
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| 82 | } |
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| 83 | |
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| 84 | #if defined(XP_MACOSX) || defined(_WIN32) |
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| 85 | |
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| 86 | NP_EXPORT(NPError) NP_Initialize(NPNetscapeFuncs* browserFuncs) { |
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| 87 | browserFunctions = browserFuncs; |
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| 88 | return NPERR_NO_ERROR; |
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| 89 | } |
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| 90 | #else |
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| 91 | |
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| 92 | NP_EXPORT(NPError) NP_Initialize(NPNetscapeFuncs* browserFuncs, NPPluginFuncs* pluginFuncs) { |
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| 93 | EstEID_log(""); |
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| 94 | browserFunctions = browserFuncs; |
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| 95 | return NP_GetEntryPoints(pluginFuncs); |
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| 96 | } |
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| 97 | #endif |
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| 98 | |
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| 99 | NP_EXPORT(NPError) NP_Shutdown(void) { |
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| 100 | EstEID_log(""); |
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| 101 | EstEID_freeCerts(); |
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| 102 | return NPERR_NO_ERROR; |
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| 103 | } |
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| 104 | |
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| 105 | #ifdef _WIN32 |
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| 106 | HINSTANCE pluginInstance; |
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| 107 | BOOL APIENTRY DllMain(HINSTANCE instance, DWORD reason, LPVOID reserved) { |
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| 108 | EstEID_log("reason: %lu", reason); |
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| 109 | pluginInstance = instance; |
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| 110 | if (reason == DLL_PROCESS_ATTACH || reason == DLL_THREAD_ATTACH) { |
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| 111 | DisableThreadLibraryCalls(instance); |
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| 112 | } |
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| 113 | return TRUE; |
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| 114 | } |
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| 115 | |
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| 116 | #else |
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| 117 | NP_EXPORT(const char*) NP_GetMIMEDescription() { |
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| 118 | char *mime = (char *) MIME_TYPE "::" PLUGIN_NAME; |
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| 119 | EstEID_log("NP_GetMIMEDescription: %s", mime); |
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| 120 | return mime; |
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| 121 | } |
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| 122 | |
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| 123 | #endif |
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| 124 | |
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| 125 | NP_EXPORT(char*) NP_GetPluginVersion() { |
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| 126 | EstEID_log("NP_GetPluginVersion: %s", ESTEID_PLUGIN_VERSION); |
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| 127 | return(char *)ESTEID_PLUGIN_VERSION; |
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| 128 | } |
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| 129 | |
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| 130 | NP_EXPORT(NPError) NP_GetValue(void* future, NPPVariable aVariable, void* aValue) { |
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| 131 | switch (aVariable) { |
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| 132 | case NPPVpluginNameString: |
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| 133 | *((char**)aValue) = (char *)PLUGIN_NAME; |
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| 134 | break; |
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| 135 | case NPPVpluginDescriptionString: |
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| 136 | *((char**)aValue) = (char *)PLUGIN_DESCRIPTION; |
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| 137 | break; |
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| 138 | default: |
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| 139 | return NPERR_INVALID_PARAM; |
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| 140 | break; |
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| 141 | } |
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| 142 | return NPERR_NO_ERROR; |
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| 143 | } |
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| 144 | |
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| 145 | int is_allowed_protocol(char *protocol) { |
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| 146 | #ifdef DEVELOPMENT_MODE |
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| 147 | EstEID_log("protocol %s is allowed in development mode", protocol); |
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| 148 | return TRUE; |
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| 149 | #else |
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| 150 | int allowed = (!STRCASECMP("https", protocol)); |
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| 151 | EstEID_log("protocol %s is %sallowed", protocol, allowed ? "" : "not "); |
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| 152 | return allowed; |
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| 153 | #endif |
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| 154 | } |
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| 155 | |
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| 156 | #define MAX_PROTOCOL_NAME_LENGTH 5 |
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| 157 | int is_from_allowed_url(NPP instanceData) { |
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| 158 | |
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| 159 | NPObject *windowObject = NULL; |
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| 160 | |
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| 161 | browserFunctions->getvalue(instanceData, NPNVWindowNPObject, &windowObject); |
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| 162 | NPIdentifier identifier = browserFunctions->getstringidentifier("location"); |
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| 163 | NPVariant variantValue; |
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| 164 | browserFunctions->getproperty(instanceData, windowObject, identifier, &variantValue); |
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| 165 | NPObject *locationObj = NPVARIANT_TO_OBJECT(variantValue); |
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| 166 | identifier = browserFunctions->getstringidentifier("href"); |
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| 167 | browserFunctions->getproperty(instanceData, locationObj, identifier, &variantValue); |
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| 168 | EstEID_log("href=%s", NPVARIANT_TO_STRING(variantValue).UTF8Characters); |
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| 169 | char protocol[MAX_PROTOCOL_NAME_LENGTH + 1]; |
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| 170 | memset(protocol, '\0', MAX_PROTOCOL_NAME_LENGTH + 1); |
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| 171 | strncpy(protocol, (const char *)NPVARIANT_TO_STRING(variantValue).UTF8Characters, MAX_PROTOCOL_NAME_LENGTH); |
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| 172 | char *p = protocol; |
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| 173 | while(isalpha(*p)){ |
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| 174 | p++; |
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| 175 | } |
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| 176 | *p = '\0'; |
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| 177 | |
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| 178 | EstEID_log("detected protocol: %s", protocol); |
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| 179 | return is_allowed_protocol(protocol); |
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| 180 | } |
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| 181 | |
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| 182 | |
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| 183 | int loadErrorShown; |
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| 184 | |
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| 185 | NPError NPP_New(NPMIMEType mimeType, NPP instanceData, uint16_t mode, int16_t argc, char* argn[], char* argv[], NPSavedData* saved) { |
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| 186 | EstEID_log("LOADED PLUGIN PKCS11 VERSION %s", ESTEID_PLUGIN_VERSION); |
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| 187 | EstEID_log("instanceData=%p, mimeType=%s", instanceData, mimeType); |
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| 188 | #ifdef XP_MACOSX |
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| 189 | browserFunctions->setvalue(instanceData, NPPVpluginEventModel, (void*)NPEventModelCocoa); |
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| 190 | browserFunctions->setvalue(instanceData, NPPVpluginDrawingModel, (void*)NPDrawingModelCoreGraphics); |
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| 191 | #endif |
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| 192 | |
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| 193 | #ifdef DEVELOPMENT_MODE |
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| 194 | EstEID_log("*** NB! Plugin is built in development mode, all protocols are allowed! ***"); |
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| 195 | #endif |
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| 196 | |
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| 197 | #if defined(XP_MACOSX) && defined(__LP64__) |
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| 198 | EstEID_log("Mac OSX x86_64 mode detected, dialogs are displayed in separate windows, not as sheets tied to browser window"); |
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| 199 | #endif |
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| 200 | |
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| 201 | browserFunctions->setvalue(instanceData, NPPVpluginWindowBool, (void*)false); |
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| 202 | |
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| 203 | if (!EstEID_loadLibrary()) { |
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| 204 | if (!loadErrorShown) { |
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| 205 | NPVariant result; |
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| 206 | char code[2048]; |
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| 207 | sprintf(code, "alert('EstEID Plugin initialization failed:\\n%s');", EstEID_error); |
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| 208 | NPString codeString = {strdup(code), strlen(code)}; |
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| 209 | NPObject *windowObject; |
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| 210 | browserFunctions->getvalue(instanceData, NPNVWindowNPObject, &windowObject); |
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| 211 | browserFunctions->evaluate(instanceData, windowObject, &codeString, &result); |
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| 212 | browserFunctions->releasevariantvalue(&result); |
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| 213 | loadErrorShown = 1; |
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| 214 | } |
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| 215 | return NPERR_MODULE_LOAD_FAILED_ERROR; |
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| 216 | } |
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| 217 | EstEID_log("loaded"); |
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| 218 | PluginInstance *pluginInstance = (PluginInstance *)browserFunctions->createobject(instanceData, pluginClass()); |
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| 219 | pluginInstance->npp = instanceData; |
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| 220 | pluginInstance->nativeWindowHandle = NULL; |
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| 221 | |
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| 222 | if( is_from_allowed_url(instanceData) ) { |
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| 223 | allowedSite = TRUE; |
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| 224 | } |
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| 225 | else { |
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| 226 | allowedSite = FALSE; |
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| 227 | EstEID_log("URL did dot pass examination"); |
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| 228 | } |
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| 229 | |
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| 230 | instanceData->pdata = pluginInstance; |
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| 231 | EstEID_log("no error on NPP_New"); |
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| 232 | return NPERR_NO_ERROR; |
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| 233 | } |
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| 234 | |
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| 235 | NPError NPP_Destroy(NPP instanceData, NPSavedData** save) { |
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| 236 | EstEID_log("instanceData=%p", instanceData); |
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| 237 | browserFunctions->releaseobject((NPObject *)instanceData->pdata); |
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| 238 | return NPERR_NO_ERROR; |
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| 239 | } |
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| 240 | |
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| 241 | NPError NPP_GetValue(NPP instanceData, NPPVariable variable, void *value) { |
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| 242 | LOG_LOCATION; |
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| 243 | if (variable == NPPVpluginScriptableNPObject) { |
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| 244 | NPObject *plugin = (NPObject *)instanceData->pdata; |
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| 245 | browserFunctions->retainobject(plugin); |
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| 246 | *((void **)value) = plugin; |
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| 247 | return NPERR_NO_ERROR; |
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| 248 | } |
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| 249 | return NPERR_GENERIC_ERROR; |
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| 250 | } |
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| 251 | |
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| 252 | NPError NPP_SetValue(NPP instanceData, NPNVariable variable, void *value) { |
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| 253 | EstEID_log("instanceData=%p, variable=%i, value=%p", instanceData, variable, value); |
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| 254 | return NPERR_GENERIC_ERROR; |
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| 255 | } |
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| 256 | |
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| 257 | NPError NPP_SetWindow(NPP instanceData, NPWindow* window) { |
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| 258 | LOG_LOCATION; |
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| 259 | if (window == NULL || instanceData == NULL) return NPERR_NO_ERROR; |
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| 260 | PluginInstance* currentInstance = (PluginInstance*)(instanceData->pdata); |
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| 261 | |
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| 262 | EstEID_log("window=%p, window->window=%p, currentInstance=%p, nativeWindowHandle=%p", window, window->window, currentInstance, currentInstance->nativeWindowHandle); |
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| 263 | |
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| 264 | if (currentInstance && window->window && (currentInstance->nativeWindowHandle != window->window)) { |
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| 265 | currentInstance->nativeWindowHandle = window->window; |
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| 266 | EstEID_log("nativeWindowHandle=%p", currentInstance->nativeWindowHandle); |
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| 267 | } |
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| 268 | EstEID_log("nativeWindowHandle=%p", currentInstance->nativeWindowHandle); |
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| 269 | |
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| 270 | return NPERR_NO_ERROR; |
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| 271 | } |
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| 272 | |
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| 273 | NPError NPP_NewStream(NPP instanceData, NPMIMEType type, NPStream* stream, NPBool seekable, uint16_t* stype) { |
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| 274 | return NPERR_NO_ERROR; |
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| 275 | } |
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| 276 | |
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| 277 | NPError NPP_DestroyStream(NPP instanceData, NPStream* stream, NPReason reason) { |
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| 278 | return NPERR_NO_ERROR; |
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| 279 | } |
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| 280 | |
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| 281 | int32_t NPP_WriteReady(NPP instanceData, NPStream* stream) { |
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| 282 | return 0; |
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| 283 | } |
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| 284 | |
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| 285 | int32_t NPP_Write(NPP instanceData, NPStream* stream, int32_t offset, int32_t len, void* buffer) { |
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| 286 | return 0; |
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| 287 | } |
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| 288 | |
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| 289 | void NPP_StreamAsFile(NPP instanceData, NPStream* stream, const char* fname) { |
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| 290 | } |
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| 291 | |
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| 292 | void NPP_Print(NPP instanceData, NPPrint* platformPrint) { |
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| 293 | } |
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| 294 | |
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| 295 | int16_t NPP_HandleEvent(NPP instanceData, void* event) { |
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| 296 | return 0; |
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| 297 | } |
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| 298 | |
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| 299 | void NPP_URLNotify(NPP instanceData, const char* url, NPReason reason, void* notifyData) { |
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| 300 | } |
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| 301 | |
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| 302 | void drawPlugin(NPP instanceData) { |
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| 303 | } |
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| 304 | |
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