answerscripts.c

   1 //#define __WIN32__
   2 #ifndef __WIN32__
   3         #define ANSWERSCRIPT_EXT ""
   4 #else
   5         #define ANSWERSCRIPT_EXT ".exe"
   6 #endif
   7 #define ANSWERSCRIPT "answerscripts" ANSWERSCRIPT_EXT
   8 #define ANSWERSCRIPTS_TIMEOUT_INTERVAL 250
   9 #define ANSWERSCRIPTS_LINE_LENGTH 4096
  10
  11 #include <stdio.h>
  12 #include <stdlib.h>
  13 #include <errno.h>
  14
  15 #ifndef __WIN32__
  16         #include <fcntl.h>
  17 #endif
  18
  19 /* Purple plugin */
  20 #define PURPLE_PLUGINS
  21 #include <libpurple/debug.h>
  22 #include <libpurple/version.h>
  23 #include <libpurple/conversation.h>
  24 #include <libpurple/plugin.h>
  25 #include <libpurple/signals.h>
  26 #include <libpurple/util.h>
  27
  28 char *message = NULL;
  29 char *hook_script = NULL;
  30 char response[ANSWERSCRIPTS_LINE_LENGTH+1];
  31 int i;
  32
  33 typedef struct {
  34   FILE *pipe;
  35   PurpleConversation *conv;
  36 } answerscripts_job;
  37
  38 int answerscripts_process_message_cb(answerscripts_job *job) {
  39         FILE *pipe = job->pipe;
  40         PurpleConversation *conv = job->conv;
  41
  42         if (pipe && !feof(pipe)) {
  43                 if(!fgets(response, ANSWERSCRIPTS_LINE_LENGTH, pipe)
  44                         && (errno == EWOULDBLOCK || errno == EAGAIN)
  45                 ) return 1;
  46
  47                 for(i=0;response[i];i++) if(response[i]=='\n') response[i]=0;
  48                 purple_conv_im_send(purple_conversation_get_im_data(conv), response);
  49
  50                 if(!feof(pipe)) return 1;
  51         }
  52         pclose(pipe);
  53         free(job);
  54         return 0;
  55 }
  56
  57 static void received_im_msg_cb(PurpleAccount *account, char *who, char *buffer, PurpleConversation *conv, PurpleMessageFlags flags, void *data) {
  58         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: */
  59
  60         //Get message
  61         message = purple_markup_strip_html(buffer);
  62         //printf("\nHarvie received: %s: %s\n", who, message); //debug
  63         //purple_conv_im_send(purple_conversation_get_im_data(conv), ":-*"); //debug
  64
  65         //Get status
  66         PurpleStatus *status = purple_account_get_active_status(account);
  67         PurpleStatusType *type = purple_status_get_type(status);
  68
  69         //Get status id
  70         const char *status_id = NULL;
  71         status_id = purple_primitive_get_id_from_type(purple_status_type_get_primitive(type));
  72
  73         //Get status message
  74         const char *status_msg = NULL;
  75         if (purple_status_type_get_attr(type, "message") != NULL) {
  76                 status_msg = purple_status_get_attr_string(status, "message");
  77         } else {
  78                 status_msg = (char *) purple_savedstatus_get_message(purple_savedstatus_get_current());
  79         }
  80
  81         //Export variables to environment
  82         setenv("PURPLE_FROM", who, 1);
  83         setenv("PURPLE_MSG", message, 1);
  84         setenv("PURPLE_STATUS", status_id, 1);
  85         setenv("PURPLE_STATUS_MSG", status_msg, 1);
  86
  87         //Launch job on background
  88         answerscripts_job *job = (answerscripts_job*) malloc(sizeof(answerscripts_job));
  89         job->pipe = popen(hook_script, "r");
  90         job->conv = conv;
  91
  92         #ifndef __WIN32__
  93                 int fflags = fcntl(fileno(job->pipe), F_GETFL, 0);
  94                 fcntl(fileno(job->pipe), F_SETFL, fflags | O_NONBLOCK);
  95         #endif
  96
  97         purple_timeout_add(ANSWERSCRIPTS_TIMEOUT_INTERVAL, (GSourceFunc) answerscripts_process_message_cb, (gpointer) job);
  98 }
  99
 100 static gboolean plugin_load(PurplePlugin * plugin) {
 101         asprintf(&hook_script,"%s/%s",purple_user_dir(),ANSWERSCRIPT);
 102         void *conv_handle = purple_conversations_get_handle();
 103         purple_signal_connect(conv_handle, "received-im-msg", plugin, PURPLE_CALLBACK(received_im_msg_cb), NULL);
 104         return TRUE;
 105 }
 106
 107 static gboolean plugin_unload(PurplePlugin * plugin) {
 108         free(hook_script);
 109         return TRUE;
 110 }
 111
 112 static PurplePluginInfo info = {
 113         PURPLE_PLUGIN_MAGIC,
 114         PURPLE_MAJOR_VERSION,
 115         PURPLE_MINOR_VERSION,
 116         PURPLE_PLUGIN_STANDARD,
 117         NULL,
 118         0,
 119         NULL,
 120         PURPLE_PRIORITY_DEFAULT,
 121
 122         "core-answerscripts",
 123         "AnswerScripts",
 124         "0.2.2",
 125         "Framework for hooking scripts to process received messages for libpurple clients",
 126         "This plugin will execute script ~/.purple/" ANSWERSCRIPT " "
 127                 "or any other executable called  " ANSWERSCRIPT " and found in purple_user_dir() "
 128                 "for each single instant message received.\n"
 129                 "\n- Envinronment values PURPLE_MSG and PURPLE_FROM will be set to carry "
 130                 "informations about message text and sender so script can respond to that message."
 131                 "\n- Any text printed to STDOUT by the script will be sent back as answer to message."
 132                 "\n\nPlease see example scripts, documentation or source code for more informations...",
 133         "Harvie <harvie@email.cz>",
 134         "http://github.com/harvie/libpurple-core-answerscripts",
 135
 136         plugin_load,
 137         plugin_unload,
 138         NULL,
 139         NULL,
 140         NULL,
 141         NULL,
 142         NULL,
 143         NULL,
 144         NULL,
 145         NULL,
 146         NULL
 147 };
 148
 149 static void init_plugin(PurplePlugin * plugin) {
 150
 151 }
 152
 153 PURPLE_INIT_PLUGIN(autoanswer, init_plugin, info)