Added new ENV value ANSW_PROTOCOL. Now you can securely recognize user by his nick...
[mirrors/libpurple-core-answerscripts.git] / answerscripts.c
index 7c7da4e..c26d37b 100755 (executable)
-#define PURPLE_PLUGINS
+//#define __WIN32__
+#ifndef __WIN32__
+       #define ANSWERSCRIPT_EXT ""
+#else
+       #define ANSWERSCRIPT_EXT ".exe"
+#endif
+#define ANSWERSCRIPT "answerscripts" ANSWERSCRIPT_EXT
+#define ANSWERSCRIPTS_TIMEOUT_INTERVAL 250
+#define ANSWERSCRIPTS_LINE_LENGTH 4096
+#define ENV_PREFIX "ANSW_"
+#define PROTOCOL_PREFIX "prpl-"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <string.h>
 
-/* Purple headers */
+#ifndef __WIN32__
+       #include <fcntl.h>
+#endif
+
+/* Purple plugin */
+#define PURPLE_PLUGINS
 #include <libpurple/debug.h>
 #include <libpurple/version.h>
 #include <libpurple/conversation.h>
-#include <libpurple/debug.h>
-#include <libpurple/log.h>
 #include <libpurple/plugin.h>
-#include <libpurple/pluginpref.h>
-#include <libpurple/prefs.h>
 #include <libpurple/signals.h>
 #include <libpurple/util.h>
-#include <libpurple/notify.h>
 
-#include <stdio.h>
-#include <stdlib.h>
-
-#define RESPONSE_LINE_LENGTH 4096
-#define HOOK_SCRIPT "answerscripts.exe"
-
-char *buff = NULL;
+char *message = NULL;
 char *hook_script = NULL;
-char response[RESPONSE_LINE_LENGTH+1];
+char response[ANSWERSCRIPTS_LINE_LENGTH+1];
 int i;
 
-static void
-received_im_msg_cb(PurpleAccount * account, char *who, char *buffer,
-PurpleConversation * conv, PurpleMessageFlags flags,
-void *data) {
-       /* A workaround to avoid skipping of the first message as a result on NULL-conv: */
-       if (conv == NULL) conv = purple_conversation_new(PURPLE_CONV_TYPE_IM, account, who);
+typedef struct {
+  FILE *pipe;
+  PurpleConversation *conv;
+} answerscripts_job;
 
-       buff = purple_markup_strip_html(buffer);
-       //printf("\nHarvie received: %s: %s\n", who, buff); //debug
-       //purple_conv_im_send(purple_conversation_get_im_data(conv), ":-*"); //debug
+int answerscripts_process_message_cb(answerscripts_job *job) {
+       FILE *pipe = job->pipe;
+       PurpleConversation *conv = job->conv;
 
-       setenv("PURPLE_FROM", who, 1);
-       setenv("PURPLE_MSG", buff, 1);
+       if (pipe && !feof(pipe)) {
+               if(!fgets(response, ANSWERSCRIPTS_LINE_LENGTH, pipe)
+                       && (errno == EWOULDBLOCK || errno == EAGAIN)
+               ) return 1;
 
-       FILE* pipe = popen(hook_script, "r"); //TODO: process scripts and send response asynchronously
-       while (pipe && fgets(response, RESPONSE_LINE_LENGTH, pipe)) {
                for(i=0;response[i];i++) if(response[i]=='\n') response[i]=0;
                purple_conv_im_send(purple_conversation_get_im_data(conv), response);
+
+               if(!feof(pipe)) return 1;
        }
        pclose(pipe);
+       free(job);
+       return 0;
 }
 
+static void received_im_msg_cb(PurpleAccount *account, char *who, char *buffer, PurpleConversation *conv, PurpleMessageFlags flags, void *data) {
+       if (conv == NULL) conv = purple_conversation_new(PURPLE_CONV_TYPE_IM, account, who); //* A workaround to avoid skipping of the first message as a result on NULL-conv: */
 
-static gboolean plugin_load(PurplePlugin * plugin) {
-       asprintf(&hook_script,"%s/%s",purple_user_dir(),HOOK_SCRIPT);
+       //Get message
+       message = purple_markup_strip_html(buffer);
+       //printf("\nHarvie received: %s: %s\n", who, message); //debug
+       //purple_conv_im_send(purple_conversation_get_im_data(conv), ":-*"); //debug
 
-       void *conv_handle = purple_conversations_get_handle();
+       //Get protocol ID
+       const char *protocol_id = purple_account_get_protocol_id(account);
+       if(!strncmp(protocol_id,PROTOCOL_PREFIX,strlen(PROTOCOL_PREFIX))) protocol_id += strlen(PROTOCOL_PREFIX); //trim out protocol prefix (eg.: "prpl-irc" => "irc")
+
+       //Get status
+       PurpleStatus *status = purple_account_get_active_status(account);
+       PurpleStatusType *type = purple_status_get_type(status);
+
+       //Get status id
+       const char *status_id = NULL;
+       status_id = purple_primitive_get_id_from_type(purple_status_type_get_primitive(type));
+
+       //Get status message
+       const char *status_msg = NULL;
+       if (purple_status_type_get_attr(type, "message") != NULL) {
+               status_msg = purple_status_get_attr_string(status, "message");
+       } else {
+               status_msg = (char *) purple_savedstatus_get_message(purple_savedstatus_get_current());
+       }
+
+       //Export variables to environment
+       setenv(ENV_PREFIX "MSG", message, 1);
+       setenv(ENV_PREFIX "FROM", who, 1);
+       setenv(ENV_PREFIX "PROTOCOL", protocol_id, 1);
+       setenv(ENV_PREFIX "STATUS", status_id, 1);
+       setenv(ENV_PREFIX "STATUS_MSG", status_msg, 1);
 
-       purple_signal_connect(conv_handle, "received-im-msg",
-                             plugin, PURPLE_CALLBACK(received_im_msg_cb),
-                             NULL);
+       //Launch job on background
+       answerscripts_job *job = (answerscripts_job*) malloc(sizeof(answerscripts_job));
+       job->pipe = popen(hook_script, "r");
+       job->conv = conv;
+
+       #ifndef __WIN32__
+               int fflags = fcntl(fileno(job->pipe), F_GETFL, 0);
+               fcntl(fileno(job->pipe), F_SETFL, fflags | O_NONBLOCK);
+       #endif
+
+       purple_timeout_add(ANSWERSCRIPTS_TIMEOUT_INTERVAL, (GSourceFunc) answerscripts_process_message_cb, (gpointer) job);
+}
+
+static gboolean plugin_load(PurplePlugin * plugin) {
+       asprintf(&hook_script,"%s/%s",purple_user_dir(),ANSWERSCRIPT);
+       void *conv_handle = purple_conversations_get_handle();
+       purple_signal_connect(conv_handle, "received-im-msg", plugin, PURPLE_CALLBACK(received_im_msg_cb), NULL);
        return TRUE;
 }
 
@@ -75,16 +129,17 @@ static PurplePluginInfo info = {
 
        "core-answerscripts",
        "AnswerScripts",
-       "0.1",
-       "Framework for hooking scripts to received messages for various libpurple clients",
-       "This plugin will call ~/.purple/" HOOK_SCRIPT " (or wherever purple_user_dir() points) "
-               "script (or any executable) for each single message called."
-               "Envinronment values PURPLE_MSG and PURPLE_FROM will be set to carry "
-               "informations about message text and sender so script can respond to that message. "
-               "Any text printed to STDOUT by the script will be sent back as answer to message. "
-               "Please see example scripts for more informations...",
+       "0.3.0",
+       "Framework for hooking scripts to process received messages for libpurple clients",
+       "This plugin will execute script ~/.purple/" ANSWERSCRIPT " "
+               "or any other executable called  " ANSWERSCRIPT " and found in purple_user_dir() "
+               "for each single instant message received.\n"
+               "\n- Envinronment values PURPLE_MSG and PURPLE_FROM will be set to carry "
+               "informations about message text and sender so script can respond to that message."
+               "\n- Any text printed to STDOUT by the script will be sent back as answer to message."
+               "\n\nPlease see example scripts, documentation or source code for more informations...",
        "Harvie <harvie@email.cz>",
-       "http://github.com/harvie",
+       "http://github.com/harvie/libpurple-core-answerscripts",
 
        plugin_load,
        plugin_unload,
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