Move extcmd code from hooks

diff -r fd72b1e3bf26 mcabber/mcabber/Makefile.am

--- a/mcabber/mcabber/Makefile.am	Wed Nov 12 22:23:32 2014 +0200

+++ b/mcabber/mcabber/Makefile.am	Wed Nov 12 22:24:18 2014 +0200

@@ -7,7 +7,8 @@

 		  xmpp.c xmpp.h xmpp_helper.c xmpp_helper.h xmpp_defines.h \

 		  xmpp_iq.c xmpp_iq.h xmpp_iqrequest.c xmpp_iqrequest.h \

 		  xmpp_muc.c xmpp_muc.h xmpp_s10n.c xmpp_s10n.h \

-		  caps.c caps.h help.c help.h carbons.c carbons.h

+		  caps.c caps.h help.c help.h carbons.c carbons.h \

+		  extcmd.c extcmd.h

 if OTR

 mcabber_SOURCES += otr.c otr.h nohtml.c nohtml.h

@@ -43,6 +44,7 @@

 			 xmpp_iq.h xmpp_iqrequest.h \

 			 xmpp_muc.h xmpp_s10n.h \

 			 caps.h fifo.h help.h modules.h api.h \

+			 extcmd.h \

 			 $(top_builddir)/include/config.h

 if OTR

diff -r fd72b1e3bf26 mcabber/mcabber/extcmd.c

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000

+++ b/mcabber/mcabber/extcmd.c	Wed Nov 12 22:24:18 2014 +0200

@@ -0,0 +1,152 @@

+/*

+ * extcmd.c      -- External event handler command

+ *

+ * Copyright (C) 2005-2010 Mikael Berthe <mikael@lilotux.net>

+ *

+ * This program is free software; you can redistribute it and/or modify

+ * it under the terms of the GNU General Public License as published by

+ * the Free Software Foundation; either version 2 of the License, or (at

+ * your option) any later version.

+ *

+ * This program is distributed in the hope that it will be useful, but

+ * WITHOUT ANY WARRANTY; without even the implied warranty of

+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

+ * General Public License for more details.

+ *

+ * You should have received a copy of the GNU General Public License

+ * along with this program; if not, write to the Free Software

+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307

+ * USA

+ */

+

+#include <stdlib.h>    // mkstemp

+#include <string.h>    // strlen

+#include <signal.h>    // signal

+#include <sys/types.h> // waitpid

+#include <sys/wait.h>  // waitpid

+#include <unistd.h>    // fork, close, write, execl

+#include <glib.h>

+

+#include "screen.h"

+#include "roster.h"

+#include "settings.h"

+#include "utils.h"

+#include "utf8.h"

+

+#ifndef WAIT_ANY

+# define WAIT_ANY -1

+#endif

+

+static char *extcmd = NULL;

+

+//  ext_sig_handler()

+// SIGCHLD handler.

+// wait()s for any terminated childs (to avoid hanging zombies)

+// and beeps, if child terminates with exit code 2.

+static void ext_sig_handler(int signum)

+{

+  int status;

+  pid_t pid;

+  do {

+    pid = waitpid (WAIT_ANY, &status, WNOHANG);

+    // Check the exit status value if 'eventcmd_checkstatus' is set

+    if (settings_opt_get_int("eventcmd_checkstatus")) {

+      if (pid > 0) {

+        // exit status 2 -> beep

+        if (WIFEXITED(status) && WEXITSTATUS(status) == 2) {

+          scr_beep();

+        }

+      }

+    }

+  } while (pid > 0);

+}

+

+//  hk_ext_cmd_init()

+// Initialize external command variable.

+// Can be called with parameter NULL to reset and free memory

+void hk_ext_cmd_init(const char *command)

+{

+  if (extcmd) {

+    signal(SIGCHLD, SIG_DFL);

+    g_free(extcmd);

+    extcmd = NULL;

+  }

+  if (command) {

+    signal(SIGCHLD, ext_sig_handler);

+    extcmd = expand_filename(command);

+  }

+}

+

+//  hk_ext_cmd()

+// Launch an external command (process) for the given event.

+// For now, data should be NULL.

+void hk_ext_cmd(const char *name, const char *arg_type, const char *arg_info, const char *data)

+{

+  pid_t pid;

+  char *arg_data = NULL;

+  char *datafname = NULL;

+

+  if (!arg_type || !arg_info) return;

+

+  if (*name && settings_opt_get_int("eventcmd_use_nickname"))

+    name = roster_getname(name);

+

+  if (data && settings_opt_get_int("event_log_files")) {

+    int fd;

+    const char *prefix;

+    char *prefix_xp = NULL;

+    char *data_locale;

+

+    data_locale = from_utf8(data);

+    prefix = settings_opt_get("event_log_dir");

+    if (prefix)

+      prefix = prefix_xp = expand_filename(prefix);

+    else

+      prefix = ut_get_tmpdir();

+    datafname = g_strdup_printf("%s/mcabber-%d.XXXXXX", prefix, getpid());

+    g_free(prefix_xp);

+

+    // XXX Some old systems may require us to set umask first.

+    fd = mkstemp(datafname);

+    if (fd == -1) {

+      g_free(datafname);

+      datafname = NULL;

+      scr_LogPrint(LPRINT_LOGNORM,

+                   "Unable to create temp file for external command.");

+    } else {

+      size_t data_locale_len = strlen(data_locale);

+      ssize_t a = write(fd, data_locale, data_locale_len);

+      ssize_t b = write(fd, "\n", 1);

+      if ((size_t)a != data_locale_len || b != 1) {

+        g_free(datafname);

+        datafname = NULL;

+        scr_LogPrint(LPRINT_LOGNORM,

+                     "Unable to write to temp file for external command.");

+      }

+      close(fd);

+      arg_data = datafname;

+    }

+    g_free(data_locale);

+  }

+

+  if ((pid=fork()) == -1) {

+    scr_LogPrint(LPRINT_LOGNORM, "Fork error, cannot launch external command.");

+    g_free(datafname);

+    return;

+  }

+

+  if (pid == 0) { // child

+    // Close standard file descriptors

+    close(STDIN_FILENO);

+    close(STDOUT_FILENO);

+    close(STDERR_FILENO);

+    if (execl(extcmd, extcmd, arg_type, arg_info, name, arg_data,

+              (char *)NULL) == -1) {

+      // scr_LogPrint(LPRINT_LOGNORM, "Cannot execute external command.");

+      exit(EXIT_FAILURE);

+    }

+  }

+  g_free(datafname);

+}

+

+/* vim: set expandtab cindent cinoptions=>2\:2(0 ts=2 sw=2:  For Vim users... */

diff -r fd72b1e3bf26 mcabber/mcabber/extcmd.h

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000

+++ b/mcabber/mcabber/extcmd.h	Wed Nov 12 22:24:18 2014 +0200

@@ -0,0 +1,15 @@

+#ifndef __MCABBER_EXTCMD_H__

+#define __MCABBER_EXTCMD_H__ 1

+

+#define EXT_CMD_TYPE_MESSAGE   "MSG"

+#define EXT_CMD_TYPE_STATUS    "STATUS"

+#define EXT_CMD_TYPE_UNREAD    "UNREAD"

+

+#define EXT_CMD_INFO_RECEIVED  "IN"

+#define EXT_CMD_INFO_SENT      "OUT"

+#define EXT_CMD_INFO_GROUPCHAT "MUC"

+

+void hk_ext_cmd_init(const char *command);

+void hk_ext_cmd(const char *bjid, const char *type, const char *info, const char *data);

+

+#endif

diff -r fd72b1e3bf26 mcabber/mcabber/hooks.c

--- a/mcabber/mcabber/hooks.c	Wed Nov 12 22:23:32 2014 +0200

+++ b/mcabber/mcabber/hooks.c	Wed Nov 12 22:24:18 2014 +0200

@@ -24,6 +24,7 @@

 #include <string.h>

 #include <sys/types.h>

 #include <unistd.h>

+#include <ctype.h>

 #include "hooks.h"

 #include "screen.h"

@@ -35,6 +36,7 @@

 #include "utf8.h"

 #include "commands.h"

 #include "main.h"

+#include "extcmd.h"

 #ifdef MODULES_ENABLE

 #include <glib.h>

@@ -177,8 +179,6 @@

 }

 #endif

-static char *extcmd;

-

 static const char *COMMAND_ME = "/me ";

 void hk_message_in(const char *bjid, const char *resname,

@@ -195,7 +195,6 @@

   char *wmsg = NULL, *bmsg = NULL, *mmsg = NULL;

   GSList *roster_usr;

   unsigned mucnicklen = 0;

-  const char *ename = NULL;

   gboolean attention = FALSE, mucprivmsg = FALSE;

   gboolean error_msg_subtype = (type == LM_MESSAGE_SUB_TYPE_ERROR);

 #ifdef MODULES_ENABLE

@@ -374,19 +373,6 @@

       (!is_room || (is_groupchat && log_muc_conf && !timestamp)))

     hlog_write_message(bjid, timestamp, 0, wmsg);

-  if (settings_opt_get_int("events_ignore_active_window") &&

-      current_buddy && scr_get_chatmode()) {

-    gpointer bud = BUDDATA(current_buddy);

-    if (bud) {

-      const char *cjid = buddy_getjid(bud);

-      if (cjid && !strcasecmp(cjid, bjid))

-        active_window = TRUE;

-    }

-  }

-

-  if (settings_opt_get_int("eventcmd_use_nickname"))

-    ename = roster_getname(bjid);

-

   // Display the sender in the log window

   if ((!is_groupchat) && !(message_flags & HBB_PREFIX_ERR) &&

       settings_opt_get_int("log_display_sender")) {

@@ -413,12 +399,24 @@

   }

 #endif

+  if (settings_opt_get_int("events_ignore_active_window") &&

+      current_buddy && scr_get_chatmode()) {

+    gpointer bud = BUDDATA(current_buddy);

+    if (bud) {

+      const char *cjid = buddy_getjid(bud);

+      if (cjid && !strcasecmp(cjid, bjid))

+        active_window = TRUE;

+    }

+  }

+

   // External command

   // - We do not call hk_ext_cmd() for history lines in MUC

   // - We do call hk_ext_cmd() for private messages in a room

   // - We do call hk_ext_cmd() for messages to the current window

   if (!active_window && ((is_groupchat && !timestamp) || !is_groupchat))

-    hk_ext_cmd(ename ? ename : bjid, (is_groupchat ? 'G' : 'M'), 'R', wmsg);

+    hk_ext_cmd(bjid, EXT_CMD_TYPE_MESSAGE,

+               is_groupchat ? EXT_CMD_INFO_GROUPCHAT : EXT_CMD_INFO_RECEIVED,

+               wmsg);

   // Beep, if enabled:

   // - if it's a private message

@@ -496,7 +494,7 @@

 #endif

   // External command

-  hk_ext_cmd(bjid, 'M', 'S', NULL);

+  hk_ext_cmd(bjid, EXT_CMD_TYPE_MESSAGE, EXT_CMD_INFO_SENT, NULL);

   g_free(bmsg);

   g_free(mmsg);

@@ -511,10 +509,7 @@

   char *bn;

   char *logsmsg;

   const char *rn = (resname ? resname : "");

-  const char *ename = NULL;

-

-  if (settings_opt_get_int("eventcmd_use_nickname"))

-    ename = roster_getname(bjid);

+  char newstatus[2] = { '?', '\0' };

   oldstat = roster_getstatus(bjid, resname);

@@ -566,27 +561,28 @@

   scr_draw_roster();

   hlog_write_status(bjid, timestamp, status, status_msg);

+  newstatus[0] = imstatus2char[status];

+

 #ifdef MODULES_ENABLE

   {

     char os[2] = " \0";

-    char ns[2] = " \0";

     hk_arg_t args[] = {

       { "jid", bjid },

       { "resource", rn },

       { "old_status", os },

-      { "new_status", ns },

+      { "new_status", newstatus },

       { "message", status_msg ? status_msg : "" },

       { NULL, NULL },

     };

     os[0] = imstatus2char[oldstat];

-    ns[0] = imstatus2char[status];

     hk_run_handlers(HOOK_STATUS_CHANGE, args);

   }

 #endif

   // External command

-  hk_ext_cmd(ename ? ename : bjid, 'S', imstatus2char[status], NULL);

+  newstatus[0] = toupper(newstatus[0]);

+  hk_ext_cmd(bjid, EXT_CMD_TYPE_STATUS, newstatus, status_msg);

 }

 void hk_mystatuschange(time_t timestamp, enum imstatus old_status,

@@ -711,7 +707,7 @@

   /* Call external command */

   str_unread = g_strdup_printf("%u %u %u %u", unread_count, attention_count,

                                muc_unread, muc_attention);

-  hk_ext_cmd("", 'U', (guchar)MIN(255, unread_count), str_unread);

+  hk_ext_cmd("", EXT_CMD_TYPE_UNREAD, str_unread, NULL);

   g_free(str_unread);

 }

@@ -751,123 +747,4 @@

   return 0;

 }

-

-/* External commands */

-

-//  hk_ext_cmd_init()

-// Initialize external command variable.

-// Can be called with parameter NULL to reset and free memory.

-void hk_ext_cmd_init(const char *command)

-{

-  if (extcmd) {

-    g_free(extcmd);

-    extcmd = NULL;

-  }

-  if (command)

-    extcmd = expand_filename(command);

-}

-

-//  hk_ext_cmd()

-// Launch an external command (process) for the given event.

-// For now, data should be NULL.

-void hk_ext_cmd(const char *bjid, guchar type, guchar info, const char *data)

-{

-  pid_t pid;

-  const char *arg_type = NULL;

-  const char *arg_info = NULL;

-  const char *arg_data = NULL;

-  char status_str[2];

-  char *datafname = NULL;

-

-  if (!extcmd) return;

-

-  // Prepare arg_* (external command parameters)

-  switch (type) {

-    case 'M': /* Normal message */

-        arg_type = "MSG";

-        if (info == 'R')

-          arg_info = "IN";

-        else if (info == 'S')

-          arg_info = "OUT";

-        break;

-    case 'G': /* Groupchat message */

-        arg_type = "MSG";

-        arg_info = "MUC";

-        break;

-    case 'S': /* Status change */

-        arg_type = "STATUS";

-        if (strchr(imstatus2char, tolower(info))) {

-          status_str[0] = toupper(info);

-          status_str[1] = 0;

-          arg_info = status_str;

-        }

-        break;

-    case 'U': /* Unread buffer count */

-        arg_type = "UNREAD";

-        arg_info = data;

-        break;

-    default:

-        return;

-  }

-

-  if (!arg_type || !arg_info) return;

-

-  if (strchr("MG", type) && data && settings_opt_get_int("event_log_files")) {

-    int fd;

-    const char *prefix;

-    char *prefix_xp = NULL;

-    char *data_locale;

-

-    data_locale = from_utf8(data);

-    prefix = settings_opt_get("event_log_dir");

-    if (prefix)

-      prefix = prefix_xp = expand_filename(prefix);

-    else

-      prefix = ut_get_tmpdir();

-    datafname = g_strdup_printf("%s/mcabber-%d.XXXXXX", prefix, getpid());

-    g_free(prefix_xp);

-

-    // XXX Some old systems may require us to set umask first.

-    fd = mkstemp(datafname);

-    if (fd == -1) {

-      g_free(datafname);

-      datafname = NULL;

-      scr_LogPrint(LPRINT_LOGNORM,

-                   "Unable to create temp file for external command.");

-    } else {

-      size_t data_locale_len = strlen(data_locale);

-      ssize_t a = write(fd, data_locale, data_locale_len);

-      ssize_t b = write(fd, "\n", 1);

-      if ((size_t)a != data_locale_len || b != 1) {

-        g_free(datafname);

-        datafname = NULL;

-        scr_LogPrint(LPRINT_LOGNORM,

-                     "Unable to write to temp file for external command.");

-      }

-      close(fd);

-      arg_data = datafname;

-    }

-    g_free(data_locale);

-  }

-

-  if ((pid=fork()) == -1) {

-    scr_LogPrint(LPRINT_LOGNORM, "Fork error, cannot launch external command.");

-    g_free(datafname);

-    return;

-  }

-

-  if (pid == 0) { // child

-    // Close standard file descriptors

-    close(STDIN_FILENO);

-    close(STDOUT_FILENO);

-    close(STDERR_FILENO);

-    if (execl(extcmd, extcmd, arg_type, arg_info, bjid, arg_data,

-              (char *)NULL) == -1) {

-      // scr_LogPrint(LPRINT_LOGNORM, "Cannot execute external command.");

-      exit(1);

-    }

-  }

-  g_free(datafname);

-}

-

 /* vim: set expandtab cindent cinoptions=>2\:2(0 sw=2 ts=2:  For Vim users... */

diff -r fd72b1e3bf26 mcabber/mcabber/hooks.h

--- a/mcabber/mcabber/hooks.h	Wed Nov 12 22:23:32 2014 +0200

+++ b/mcabber/mcabber/hooks.h	Wed Nov 12 22:24:18 2014 +0200

@@ -67,9 +67,6 @@

 guint hk_subscription(LmMessageSubType mstype, const gchar *bjid,

                       const gchar *msg);

-void hk_ext_cmd_init(const char *command);

-void hk_ext_cmd(const char *bjid, guchar type, guchar info, const char *data);

-

 #endif /* __MCABBER_HOOKS_H__ */

 /* vim: set expandtab cindent cinoptions=>2\:2(0 sw=2 ts=2:  For Vim users... */

diff -r fd72b1e3bf26 mcabber/mcabber/main.c

--- a/mcabber/mcabber/main.c	Wed Nov 12 22:23:32 2014 +0200

+++ b/mcabber/mcabber/main.c	Wed Nov 12 22:24:18 2014 +0200

@@ -19,14 +19,18 @@

  * USA

  */

-#include <stdio.h>

-#include <stdlib.h>

-#include <unistd.h>

-#include <string.h>

-#include <signal.h>

-#include <termios.h>