Add xgethostbyname and herror_msg* functions.

git-svn-id: svn://busybox.net/trunk/busybox@2654 69ca8d6d-28ef-0310-b511-8ec308f3f277

5 files changed, 188 insertions, 0 deletions

diff --git a/libbb/herror_msg.c b/libbb/herror_msg.c
new file mode 100644
index 000000000..f4210edad
--- /dev/null
+++ b/libbb/herror_msg.c
@@ -0,0 +1,50 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Utility routines.
+ *
+ * Copyright (C) tons of folks.  Tracking down who wrote what
+ * isn't something I'm going to worry about...  If you wrote something
+ * here, please feel free to acknowledge your work.
+ *
+ * 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
+ *
+ * Based in part on code from sash, Copyright (c) 1999 by David I. Bell 
+ * Permission has been granted to redistribute this code under the GPL.
+ *
+ */
+
+#include <stdarg.h>
+#include <stdlib.h>
+
+#include "libbb.h"
+
+extern void herror_msg(const char *s, ...)
+{
+        va_list p;
+
+        va_start(p, s);
+        vherror_msg(s, p);
+        va_end(p);
+}
+
+
+/* END CODE */
+/*
+Local Variables:
+c-file-style: "linux"
+c-basic-offset: 4
+tab-width: 4
+End:
+*/
diff --git a/libbb/herror_msg_and_die.c b/libbb/herror_msg_and_die.c
new file mode 100644
index 000000000..0df5ed016
--- /dev/null
+++ b/libbb/herror_msg_and_die.c
@@ -0,0 +1,51 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Utility routines.
+ *
+ * Copyright (C) tons of folks.  Tracking down who wrote what
+ * isn't something I'm going to worry about...  If you wrote something
+ * here, please feel free to acknowledge your work.
+ *
+ * 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
+ *
+ * Based in part on code from sash, Copyright (c) 1999 by David I. Bell 
+ * Permission has been granted to redistribute this code under the GPL.
+ *
+ */
+
+#include <stdarg.h>
+#include <stdlib.h>
+
+#include "libbb.h"
+
+extern void herror_msg_and_die(const char *s, ...)
+{
+        va_list p;
+
+        va_start(p, s);
+        vherror_msg(s, p);
+        va_end(p);
+        exit(EXIT_FAILURE);
+}
+
+
+/* END CODE */
+/*
+Local Variables:
+c-file-style: "linux"
+c-basic-offset: 4
+tab-width: 4
+End:
+*/
diff --git a/libbb/libbb.h b/libbb/libbb.h
index 7ab06388a..29a756b7f 100644
--- a/libbb/libbb.h
+++ b/libbb/libbb.h
@@ -29,6 +29,8 @@
 #include <sys/stat.h>
 #include <sys/types.h>
 
+#include <netdb.h>
+
 #ifdef DMALLOC
 #include "dmalloc.h"
 #endif
@@ -77,6 +79,9 @@ extern void error_msg(const char *s, ...) __attribute__ ((format (printf, 1, 2))
 extern void error_msg_and_die(const char *s, ...) __attribute__ ((noreturn, format (printf, 1, 2)));
 extern void perror_msg(const char *s, ...);
 extern void perror_msg_and_die(const char *s, ...) __attribute__ ((noreturn));
+extern void vherror_msg(const char *s, va_list p);
+extern void herror_msg(const char *s, ...);
+extern void herror_msg_and_die(const char *s, ...) __attribute__ ((noreturn));
 
 /* These two are used internally -- you shouldn't need to use them */
 extern void verror_msg(const char *s, va_list p);
@@ -252,6 +257,8 @@ extern int unzip(FILE *l_in_file, FILE *l_out_file);
 extern void gz_close(int gunzip_pid);
 extern int gz_open(FILE *compressed_file, int *pid);
 
+extern struct hostent *xgethostbyname(const char *name);
+
 #define CT_AUTO 0
 #define CT_UNIX2DOS     1
 #define CT_DOS2UNIX     2
diff --git a/libbb/vherror_msg.c b/libbb/vherror_msg.c
new file mode 100644
index 000000000..9a06f3a38
--- /dev/null
+++ b/libbb/vherror_msg.c
@@ -0,0 +1,45 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Utility routines.
+ *
+ * Copyright (C) tons of folks.  Tracking down who wrote what
+ * isn't something I'm going to worry about...  If you wrote something
+ * here, please feel free to acknowledge your work.
+ *
+ * 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
+ *
+ * Based in part on code from sash, Copyright (c) 1999 by David I. Bell 
+ * Permission has been granted to redistribute this code under the GPL.
+ *
+ */
+
+#include <stdarg.h>
+#include <netdb.h>
+extern int h_errno;
+
+#include <stdio.h>
+
+#include "libbb.h"
+
+extern void vherror_msg(const char *s, va_list p)
+{
+        int err = h_errno;
+        if(s == 0)
+                s = "";
+        verror_msg(s, p);
+        if (*s)
+                s = ": ";
+        fprintf(stderr, "%s%s\n", s, hstrerror(err));
+}
diff --git a/libbb/xgethostbyname.c b/libbb/xgethostbyname.c
new file mode 100644
index 000000000..c722951cf
--- /dev/null
+++ b/libbb/xgethostbyname.c
@@ -0,0 +1,35 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * Mini xgethostbyname implementation.
+ *
+ *
+ * Copyright (C) 2001 Matt Kraai <kraai@alumni.carnegiemellon.edu>.
+ *
+ * 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 <netdb.h>
+extern int h_errno;
+
+struct hostent *xgethostbyname(const char *name)
+{
+        struct hostent *retval;
+
+        if ((retval = gethostbyname(name)) == NULL)
+                herror_msg_and_die("%s", name);
+
+        return retval;
+}