answerscripts.c

   1 //#define __WIN32__
   2 #define ANSWERSCRIPT "answerscripts.exe"
   3 #define ANSWERSCRIPTS_TIMEOUT_INTERVAL 250
   4 #define ANSWERSCRIPTS_LINE_LENGTH 4096
   5
   6 #include <stdio.h>
   7 #include <stdlib.h>
   8 #include <errno.h>
   9
  10 #ifndef __WIN32__
  11         #include <fcntl.h>
  12 #endif
  13
  14 /* Purple plugin */
  15 #define PURPLE_PLUGINS
  16 #include <libpurple/debug.h>
  17 #include <libpurple/version.h>
  18 #include <libpurple/conversation.h>
  19 #include <libpurple/plugin.h>
  20 #include <libpurple/signals.h>
  21 #include <libpurple/util.h>
  22
  23 char *buff = NULL;
  24 char *hook_script = NULL;
  25 char response[ANSWERSCRIPTS_LINE_LENGTH+1];
  26 int i;
  27
  28 typedef struct {
  29   FILE *pipe;
  30   PurpleConversation *conv;
  31 } answerscripts_job;
  32
  33 int answerscripts_process_message_cb(answerscripts_job *job) {
  34         FILE *pipe = job->pipe;
  35         PurpleConversation *conv = job->conv;
  36
  37         if (pipe && !feof(pipe)) {
  38                 if(!fgets(response, ANSWERSCRIPTS_LINE_LENGTH, pipe)
  39                         && (errno == EWOULDBLOCK || errno == EAGAIN)
  40                 ) return 1;
  41
  42                 for(i=0;response[i];i++) if(response[i]=='\n') response[i]=0;
  43                 purple_conv_im_send(purple_conversation_get_im_data(conv), response);
  44
  45                 if(!feof(pipe)) return 1;
  46         }
  47         pclose(pipe);
  48         free(job);
  49         return 0;
  50 }
  51
  52 static void received_im_msg_cb(PurpleAccount *account, char *who, char *buffer, PurpleConversation *conv, PurpleMessageFlags flags, void *data) {
  53         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: */
  54
  55         buff = purple_markup_strip_html(buffer);
  56         //printf("\nHarvie received: %s: %s\n", who, buff); //debug
  57         //purple_conv_im_send(purple_conversation_get_im_data(conv), ":-*"); //debug
  58
  59         setenv("PURPLE_FROM", who, 1);
  60         setenv("PURPLE_MSG", buff, 1);
  61
  62
  63         answerscripts_job *job = (answerscripts_job*) malloc(sizeof(answerscripts_job));
  64         job->pipe = popen(hook_script, "r");
  65         job->conv = conv;
  66
  67         #ifndef __WIN32__
  68                 int fflags = fcntl(fileno(job->pipe), F_GETFL, 0);
  69                 fcntl(fileno(job->pipe), F_SETFL, fflags | O_NONBLOCK);
  70         #endif
  71
  72         purple_timeout_add(ANSWERSCRIPTS_TIMEOUT_INTERVAL, (GSourceFunc) answerscripts_process_message_cb, (gpointer) job);
  73 }
  74
  75
  76 static gboolean plugin_load(PurplePlugin * plugin) {
  77         asprintf(&hook_script,"%s/%s",purple_user_dir(),ANSWERSCRIPT);
  78         void *conv_handle = purple_conversations_get_handle();
  79         purple_signal_connect(conv_handle, "received-im-msg", plugin, PURPLE_CALLBACK(received_im_msg_cb), NULL);
  80         return TRUE;
  81 }
  82
  83 static gboolean plugin_unload(PurplePlugin * plugin) {
  84         free(hook_script);
  85         return TRUE;
  86 }
  87
  88 static PurplePluginInfo info = {
  89         PURPLE_PLUGIN_MAGIC,
  90         PURPLE_MAJOR_VERSION,
  91         PURPLE_MINOR_VERSION,
  92         PURPLE_PLUGIN_STANDARD,
  93         NULL,
  94         0,
  95         NULL,
  96         PURPLE_PRIORITY_DEFAULT,
  97
  98         "core-answerscripts",
  99         "AnswerScripts",
 100         "0.2.1",
 101         "Framework for hooking scripts to process received messages for libpurple clients",
 102         "This plugin will execute script ~/.purple/" ANSWERSCRIPT " "
 103                 "or any other executable called  " ANSWERSCRIPT " and found in purple_user_dir() "
 104                 "for each single instant message received.\n"
 105                 "\n- Envinronment values PURPLE_MSG and PURPLE_FROM will be set to carry "
 106                 "informations about message text and sender so script can respond to that message."
 107                 "\n- Any text printed to STDOUT by the script will be sent back as answer to message."
 108                 "\n\nPlease see example scripts, documentation or source code for more informations...",
 109         "Harvie <harvie@email.cz>",
 110         "http://github.com/harvie/libpurple-core-answerscripts",
 111
 112         plugin_load,
 113         plugin_unload,
 114         NULL,
 115         NULL,
 116         NULL,
 117         NULL,
 118         NULL,
 119         NULL,
 120         NULL,
 121         NULL,
 122         NULL
 123 };
 124
 125 static void init_plugin(PurplePlugin * plugin) {
 126
 127 }
 128
 129 PURPLE_INIT_PLUGIN(autoanswer, init_plugin, info)