util: check asprintf return

Signed-off-by: Julien Danjou <julien@danjou.info>

awesome.c

@@ -19,7 +19,6 @@
  *
  */
 
-#define _GNU_SOURCE
 #include <getopt.h>
 
 #include <locale.h>

common/markup.c

@@ -19,13 +19,8 @@
  *
  */
 
-/* asprintf */
-#define _GNU_SOURCE
-
 #include <glib.h>
 
-#include <stdio.h>
-
 #include "common/markup.h"
 
 /** Callback to invoke when the opening tag of an element is seen.

common/util.c

@@ -21,7 +21,6 @@
  */
 
 #include <stdarg.h>
-#include <stdio.h>
 #include <sys/wait.h>
 #include <unistd.h>
 #include <limits.h>

common/util.h

@@ -23,11 +23,15 @@
 #ifndef AWESOME_COMMON_UTIL_H
 #define AWESOME_COMMON_UTIL_H
 
+/* asprintf */
+#define _GNU_SOURCE
+
 #include <string.h>
 #include <stdlib.h>
 #include <stdbool.h>
 #include <stdarg.h>
 #include <assert.h>
+#include <stdio.h>
 
 #if !(defined (__FreeBSD__) || defined(__OpenBSD__))
 #include <alloca.h>
@@ -352,5 +356,11 @@ const char * name_func_rlookup(void *, const name_func_link_t *);
 void a_exec(const char *);
 char ** a_strsplit(const char *, ssize_t, char);
 
+#define a_asprintf(strp, fmt, ...) \
+    do { \
+        if(asprintf(strp, fmt, ## __VA_ARGS__) < 0) \
+            abort(); \
+    } while(0)
+
 #endif
 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80

common/xutil.c

@@ -19,10 +19,7 @@
  *
  */
 
-/* asprintf() */
-#define _GNU_SOURCE
-
-#include <stdio.h>
+#include "common/util.h"
 
 #include <xcb/xcb.h>
 #include <xcb/xcb_atom.h>
@@ -31,7 +28,6 @@
 /* CURSORFONT */
 #include <X11/Xlibint.h>
 
-#include "common/util.h"
 #include "common/xutil.h"
 #include "common/atoms.h"
 
@@ -319,14 +315,14 @@ xutil_error_init(const xcb_generic_error_t *e, xutil_error_t *err)
     /* Extensions  generally provide  their  own requests  so we  just
      * store the request code */
     if(err->request_code >= (sizeof(xutil_label_request) / sizeof(char *)))
-        asprintf(&err->request_label, "%d", err->request_code);
+        a_asprintf(&err->request_label, "%d", err->request_code);
     else
         err->request_label = a_strdup(xutil_label_request[err->request_code]);
 
     /* Extensions may also define their  own errors, so just store the
      * error_code */
     if(e->error_code >= (sizeof(xutil_label_error) / sizeof(char *)))
-        asprintf(&err->error_label, "%d", e->error_code);
+        a_asprintf(&err->error_label, "%d", e->error_code);
     else
         err->error_label = a_strdup(xutil_label_error[e->error_code]);
 

luaa.c

@@ -19,11 +19,9 @@
  *
  */
 
-/* asprintf */
-#define _GNU_SOURCE
+#include "common/util.h"
 
 #include <errno.h>
-#include <stdio.h>
 #include <sys/socket.h>
 #include <sys/un.h>
 #include <unistd.h>
@@ -31,7 +29,6 @@
 #include <sys/wait.h>
 #include <unistd.h>
 #include <fcntl.h>
-#include <stdio.h>
 
 #include <ev.h>
 
@@ -884,14 +881,14 @@ luaA_init(void)
     if((dir = getenv("XDG_CONFIG_HOME")))
     {
         char *path;
-        asprintf(&path, "package.path = package.path .. \";%s/awesome/?.lua;%s/awesome/?/init.lua\"", dir, dir);
+        a_asprintf(&path, "package.path = package.path .. \";%s/awesome/?.lua;%s/awesome/?/init.lua\"", dir, dir);
         luaA_dostring(globalconf.L, path);
         p_delete(&path);
     }
     else
     {
         char *path, *homedir = getenv("HOME");
-        asprintf(&path,
+        a_asprintf(&path,
                    "package.path = package.path .. \";%s" XDG_CONFIG_HOME_DEFAULT "/awesome/?.lua;%s" XDG_CONFIG_HOME_DEFAULT "/awesome/?/init.lua\"",
                    homedir, homedir);
         luaA_dostring(globalconf.L, path);
@@ -909,7 +906,7 @@ luaA_init(void)
         for(buf = xdg_files; *buf; buf++)
         {
             char *confpath;
-            asprintf(&confpath, "package.path = package.path .. \";%s/awesome/?.lua;%s/awesome/?/init.lua\"",
+            a_asprintf(&confpath, "package.path = package.path .. \";%s/awesome/?.lua;%s/awesome/?/init.lua\"",
                        *buf, *buf);
             luaA_dostring(globalconf.L, confpath);
             p_delete(&confpath);
@@ -971,9 +968,9 @@ luaA_parserc(const char *confpatharg, bool run)
     }
 
     if((confdir = getenv("XDG_CONFIG_HOME")))
-        asprintf(&confpath, "%s" AWESOME_CONFIG_FILE, confdir);
+        a_asprintf(&confpath, "%s" AWESOME_CONFIG_FILE, confdir);
     else
-        asprintf(&confpath, "%s" XDG_CONFIG_HOME_DEFAULT AWESOME_CONFIG_FILE, getenv("HOME"));
+        a_asprintf(&confpath, "%s" XDG_CONFIG_HOME_DEFAULT AWESOME_CONFIG_FILE, getenv("HOME"));
 
     /* try to run XDG_CONFIG_HOME/awesome/rc.lua */
     if(luaA_loadrc(confpath, run))
@@ -996,7 +993,7 @@ luaA_parserc(const char *confpatharg, bool run)
 
     for(buf = xdg_files; *buf && !ret; buf++)
     {
-        asprintf(&confpath, "%s" AWESOME_CONFIG_FILE, *buf);
+        a_asprintf(&confpath, "%s" AWESOME_CONFIG_FILE, *buf);
         if(luaA_loadrc(confpath, run))
         {
             ret = true;