package/xenomai/3.0.10/0001-lib-boilerplate-iniparser-Allow-building-with-GCC-10-2-2020101.patch

From 8acdbd718b7828b5d8903a6254b2fa198b866491 Mon Sep 17 00:00:00 2001
From: Florian Bezdeka <florian.bezdeka@siemens.com>
Date: Thu, 12 Nov 2020 11:45:28 +0000
Subject: [PATCH] lib/boilerplate/iniparser: Allow building with GCC 10.2
 2020101
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Updating to upstream revision f858275f7f307eecba84c2f5429483f9f28007f8.
Upstream repository is located at [1].

The reason for updating was the following compiler error when trying
to compile with GCC 10.2 10.2.1 20201016. As it turned out the problem
was already addressed upstream:

iniparser/iniparser.c: In function ‘iniparser_load’:
iniparser/iniparser.c:616:13: error: ‘sprintf’ arguments 3, 4 may
overlap destination object ‘buf’ [-Werror=restrict]
   616 |             sprintf(tmp, "%s:%s", section, key);
       |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

I reviewed especially the API changes. Most of them are cleanups only
but two things should be pointed out:

  - The type of the size field of struct _dictionary_ changed from int
    to ssize_t. The only user of this struct is
    lib/analogy/calibration.c which uses this structure for internal
    things only. It is never exposed to any public API so updating is
    OK and fully backward compatible.

  - dictionary_new changed its signature
      from dictionary_new(int size)
      to   dictionary_new(size_t size).
    This function is not part of any public API. So updating does not
    break backward compatibility.

[1] https://github.com/ndevilla/iniparser

Signed-off-by: Florian Bezdeka <florian.bezdeka@siemens.com>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>

[Retrieved from:
https://gitlab.denx.de/Xenomai/xenomai/-/commit/8acdbd718b7828b5d8903a6254b2fa198b866491]
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
---
 lib/boilerplate/iniparser/dictionary.c | 409 ++++++++++----------
 lib/boilerplate/iniparser/dictionary.h |  43 ++-
 lib/boilerplate/iniparser/iniparser.c  | 491 +++++++++++++++++--------
 lib/boilerplate/iniparser/iniparser.h  | 131 +++++--
 4 files changed, 646 insertions(+), 428 deletions(-)

diff --git a/lib/boilerplate/iniparser/dictionary.c b/lib/boilerplate/iniparser/dictionary.c
index 5299b77ed..cb7ccd49e 100644
--- a/lib/boilerplate/iniparser/dictionary.c
+++ b/lib/boilerplate/iniparser/dictionary.c
@@ -1,10 +1,8 @@
 /*-------------------------------------------------------------------------*/
 /**
-   @file	dictionary.c
-   @author	N. Devillard
-   @date	Sep 2007
-   @version	$Revision: 1.27 $
-   @brief	Implements a dictionary for string variables.
+   @file    dictionary.c
+   @author  N. Devillard
+   @brief   Implements a dictionary for string variables.
 
    This module implements a simple dictionary object, i.e. a list
    of string/string associations. This object is useful to store e.g.
@@ -12,12 +10,8 @@
 */
 /*--------------------------------------------------------------------------*/
 
-/*
-	$Id: dictionary.c,v 1.27 2007-11-23 21:39:18 ndevilla Exp $
-	$Revision: 1.27 $
-*/
 /*---------------------------------------------------------------------------
-   								Includes
+                                Includes
  ---------------------------------------------------------------------------*/
 #include "dictionary.h"
 
@@ -27,33 +21,18 @@
 #include <unistd.h>
 
 /** Maximum value size for integers and doubles. */
-#define MAXVALSZ	1024
+#define MAXVALSZ    1024
 
 /** Minimal allocated number of entries in a dictionary */
-#define DICTMINSZ	128
+#define DICTMINSZ   128
 
 /** Invalid key token */
 #define DICT_INVALID_KEY    ((char*)-1)
 
 /*---------------------------------------------------------------------------
-  							Private functions
+                            Private functions
  ---------------------------------------------------------------------------*/
 
-/* Doubles the allocated size associated to a pointer */
-/* 'size' is the current allocated size. */
-static void * mem_double(void * ptr, int size)
-{
-    void * newptr ;
- 
-    newptr = calloc(2*size, 1);
-    if (newptr==NULL) {
-        return NULL ;
-    }
-    memcpy(newptr, ptr, size);
-    free(ptr);
-    return newptr ;
-}
-
 /*-------------------------------------------------------------------------*/
 /**
   @brief    Duplicate a string
@@ -67,23 +46,68 @@ static void * mem_double(void * ptr, int size)
 static char * xstrdup(const char * s)
 {
     char * t ;
+    size_t len ;
     if (!s)
         return NULL ;
-    t = malloc(strlen(s)+1) ;
+
+    len = strlen(s) + 1 ;
+    t = (char*) malloc(len) ;
     if (t) {
-        strcpy(t,s);
+        memcpy(t, s, len) ;
     }
     return t ;
 }
 
+/*-------------------------------------------------------------------------*/
+/**
+  @brief    Double the size of the dictionary
+  @param    d Dictionary to grow
+  @return   This function returns non-zero in case of failure
+ */
+/*--------------------------------------------------------------------------*/
+static int dictionary_grow(dictionary * d)
+{
+    char        ** new_val ;
+    char        ** new_key ;
+    unsigned     * new_hash ;
+
+    new_val  = (char**) calloc(d->size * 2, sizeof *d->val);
+    new_key  = (char**) calloc(d->size * 2, sizeof *d->key);
+    new_hash = (unsigned*) calloc(d->size * 2, sizeof *d->hash);
+    if (!new_val || !new_key || !new_hash) {
+        /* An allocation failed, leave the dictionary unchanged */
+        if (new_val)
+            free(new_val);
+        if (new_key)
+            free(new_key);
+        if (new_hash)
+            free(new_hash);
+        return -1 ;
+    }
+    /* Initialize the newly allocated space */
+    memcpy(new_val, d->val, d->size * sizeof(char *));
+    memcpy(new_key, d->key, d->size * sizeof(char *));
+    memcpy(new_hash, d->hash, d->size * sizeof(unsigned));
+    /* Delete previous data */
+    free(d->val);
+    free(d->key);
+    free(d->hash);
+    /* Actually update the dictionary */
+    d->size *= 2 ;
+    d->val = new_val;
+    d->key = new_key;
+    d->hash = new_hash;
+    return 0 ;
+}
+
 /*---------------------------------------------------------------------------
-  							Function codes
+                            Function codes
  ---------------------------------------------------------------------------*/
 /*-------------------------------------------------------------------------*/
 /**
-  @brief	Compute the hash key for a string.
-  @param	key		Character string to use for key.
-  @return	1 unsigned int on at least 32 bits.
+  @brief    Compute the hash key for a string.
+  @param    key     Character string to use for key.
+  @return   1 unsigned int on at least 32 bits.
 
   This hash function has been taken from an Article in Dr Dobbs Journal.
   This is normally a collision-free function, distributing keys evenly.
@@ -93,84 +117,88 @@ static char * xstrdup(const char * s)
 /*--------------------------------------------------------------------------*/
 unsigned dictionary_hash(const char * key)
 {
-	int			len ;
-	unsigned	hash ;
-	int			i ;
-
-	len = strlen(key);
-	for (hash=0, i=0 ; i<len ; i++) {
-		hash += (unsigned)key[i] ;
-		hash += (hash<<10);
-		hash ^= (hash>>6) ;
-	}
-	hash += (hash <<3);
-	hash ^= (hash >>11);
-	hash += (hash <<15);
-	return hash ;
+    size_t      len ;
+    unsigned    hash ;
+    size_t      i ;
+
+    if (!key)
+        return 0 ;
+
+    len = strlen(key);
+    for (hash=0, i=0 ; i<len ; i++) {
+        hash += (unsigned)key[i] ;
+        hash += (hash<<10);
+        hash ^= (hash>>6) ;
+    }
+    hash += (hash <<3);
+    hash ^= (hash >>11);
+    hash += (hash <<15);
+    return hash ;
 }
 
 /*-------------------------------------------------------------------------*/
 /**
-  @brief	Create a new dictionary object.
-  @param	size	Optional initial size of the dictionary.
-  @return	1 newly allocated dictionary objet.
+  @brief    Create a new dictionary object.
+  @param    size    Optional initial size of the dictionary.
+  @return   1 newly allocated dictionary objet.
 
   This function allocates a new dictionary object of given size and returns
   it. If you do not know in advance (roughly) the number of entries in the
   dictionary, give size=0.
  */
-/*--------------------------------------------------------------------------*/
-dictionary * dictionary_new(int size)
+/*-------------------------------------------------------------------------*/
+dictionary * dictionary_new(size_t size)
 {
-	dictionary	*	d ;
-
-	/* If no size was specified, allocate space for DICTMINSZ */
-	if (size<DICTMINSZ) size=DICTMINSZ ;
-
-	if (!(d = (dictionary *)calloc(1, sizeof(dictionary)))) {
-		return NULL;
-	}
-	d->size = size ;
-	d->val  = (char **)calloc(size, sizeof(char*));
-	d->key  = (char **)calloc(size, sizeof(char*));
-	d->hash = (unsigned int *)calloc(size, sizeof(unsigned));
-	return d ;
+    dictionary  *   d ;
+
+    /* If no size was specified, allocate space for DICTMINSZ */
+    if (size<DICTMINSZ) size=DICTMINSZ ;
+
+    d = (dictionary*) calloc(1, sizeof *d) ;
+
+    if (d) {
+        d->size = size ;
+        d->val  = (char**) calloc(size, sizeof *d->val);
+        d->key  = (char**) calloc(size, sizeof *d->key);
+        d->hash = (unsigned*) calloc(size, sizeof *d->hash);
+    }
+    return d ;
 }
 
 /*-------------------------------------------------------------------------*/
 /**
-  @brief	Delete a dictionary object
-  @param	d	dictionary object to deallocate.
-  @return	void
+  @brief    Delete a dictionary object
+  @param    d   dictionary object to deallocate.
+  @return   void
 
   Deallocate a dictionary object and all memory associated to it.
  */
 /*--------------------------------------------------------------------------*/
 void dictionary_del(dictionary * d)
 {
-	int		i ;
-
-	if (d==NULL) return ;
-	for (i=0 ; i<d->size ; i++) {
-		if (d->key[i]!=NULL)
-			free(d->key[i]);
-		if (d->val[i]!=NULL)
-			free(d->val[i]);
-	}
-	free(d->val);
-	free(d->key);
-	free(d->hash);
-	free(d);
-	return ;
+    ssize_t  i ;
+
+    if (d==NULL) return ;
+    for (i=0 ; i<d->size ; i++) {
+        if (d->key[i]!=NULL)
+            free(d->key[i]);
+        if (d->val[i]!=NULL)
+            free(d->val[i]);
+    }
+    free(d->val);
+    free(d->key);
+    free(d->hash);
+    free(d);
+    return ;
 }
 
 /*-------------------------------------------------------------------------*/
 /**
-  @brief	Get a value from a dictionary.
-  @param	d		dictionary object to search.
-  @param	key		Key to look for in the dictionary.
+  @brief    Get a value from a dictionary.
+  @param    d       dictionary object to search.
+  @param    key     Key to look for in the dictionary.
   @param    def     Default value to return if key not found.
-  @return	1 pointer to internally allocated character string.
+  @return   1 pointer to internally allocated character string.
 
   This function locates a key in a dictionary and returns a pointer to its
   value, or the passed 'def' pointer if no such key can be found in
@@ -178,24 +206,24 @@ void dictionary_del(dictionary * d)
   dictionary object, you should not try to free it or modify it.
  */
 /*--------------------------------------------------------------------------*/
-const char * dictionary_get(dictionary * d, const char * key, const char * def)
+const char * dictionary_get(const dictionary * d, const char * key, const char * def)
 {
-	unsigned	hash ;
-	int			i ;
+    unsigned    hash ;
+    ssize_t      i ;
 
-	hash = dictionary_hash(key);
-	for (i=0 ; i<d->size ; i++) {
+    hash = dictionary_hash(key);
+    for (i=0 ; i<d->size ; i++) {
         if (d->key[i]==NULL)
             continue ;
         /* Compare hash */
-		if (hash==d->hash[i]) {
+        if (hash==d->hash[i]) {
             /* Compare string, to avoid hash collisions */
             if (!strcmp(key, d->key[i])) {
-				return d->val[i] ;
-			}
-		}
-	}
-	return def ;
+                return d->val[i] ;
+            }
+        }
+    }
+    return def ;
 }
 
 /*-------------------------------------------------------------------------*/
@@ -226,66 +254,57 @@ const char * dictionary_get(dictionary * d, const char * key, const char * def)
 /*--------------------------------------------------------------------------*/
 int dictionary_set(dictionary * d, const char * key, const char * val)
 {
-	int			i ;
-	unsigned	hash ;
-
-	if (d==NULL || key==NULL) return -1 ;
-	
-	/* Compute hash for this key */
-	hash = dictionary_hash(key) ;
-	/* Find if value is already in dictionary */
-	if (d->n>0) {
-		for (i=0 ; i<d->size ; i++) {
+    ssize_t         i ;
+    unsigned       hash ;
+
+    if (d==NULL || key==NULL) return -1 ;
+
+    /* Compute hash for this key */
+    hash = dictionary_hash(key) ;
+    /* Find if value is already in dictionary */
+    if (d->n>0) {
+        for (i=0 ; i<d->size ; i++) {
             if (d->key[i]==NULL)
                 continue ;
-			if (hash==d->hash[i]) { /* Same hash value */
-				if (!strcmp(key, d->key[i])) {	 /* Same key */
-					/* Found a value: modify and return */
-					if (d->val[i]!=NULL)
-						free(d->val[i]);
-                    d->val[i] = val ? xstrdup(val) : NULL ;
+            if (hash==d->hash[i]) { /* Same hash value */
+                if (!strcmp(key, d->key[i])) {   /* Same key */
+                    /* Found a value: modify and return */
+                    if (d->val[i]!=NULL)
+                        free(d->val[i]);
+                    d->val[i] = (val ? xstrdup(val) : NULL);
                     /* Value has been modified: return */
-					return 0 ;
-				}
-			}
-		}
-	}
-	/* Add a new value */
-	/* See if dictionary needs to grow */
-	if (d->n==d->size) {
-
-		/* Reached maximum size: reallocate dictionary */
-		d->val  = (char **)mem_double(d->val,  d->size * sizeof(char*)) ;
-		d->key  = (char **)mem_double(d->key,  d->size * sizeof(char*)) ;
-		d->hash = (unsigned int *)mem_double(d->hash, d->size * sizeof(unsigned)) ;
-        if ((d->val==NULL) || (d->key==NULL) || (d->hash==NULL)) {
-            /* Cannot grow dictionary */
-            return -1 ;
+                    return 0 ;
+                }
+            }
         }
-		/* Double size */
-		d->size *= 2 ;
-	}
+    }
+    /* Add a new value */
+    /* See if dictionary needs to grow */
+    if (d->n==d->size) {
+        /* Reached maximum size: reallocate dictionary */
+        if (dictionary_grow(d) != 0)
+            return -1;
+    }
 
-    /* Insert key in the first empty slot */
-    for (i=0 ; i<d->size ; i++) {
-        if (d->key[i]==NULL) {
-            /* Add key here */
-            break ;
-        }
+    /* Insert key in the first empty slot. Start at d->n and wrap at
+       d->size. Because d->n < d->size this will necessarily
+       terminate. */
+    for (i=d->n ; d->key[i] ; ) {
+        if(++i == d->size) i = 0;
     }
-	/* Copy key */
-	d->key[i]  = xstrdup(key);
-    d->val[i]  = val ? xstrdup(val) : NULL ;
-	d->hash[i] = hash;
-	d->n ++ ;
-	return 0 ;
+    /* Copy key */
+    d->key[i]  = xstrdup(key);
+    d->val[i]  = (val ? xstrdup(val) : NULL) ;
+    d->hash[i] = hash;
+    d->n ++ ;
+    return 0 ;
 }
 
 /*-------------------------------------------------------------------------*/
 /**
-  @brief	Delete a key in a dictionary
-  @param	d		dictionary object to modify.
-  @param	key		Key to remove.
+  @brief    Delete a key in a dictionary
+  @param    d       dictionary object to modify.
+  @param    key     Key to remove.
   @return   void
 
   This function deletes a key in a dictionary. Nothing is done if the
@@ -294,26 +313,26 @@ int dictionary_set(dictionary * d, const char * key, const char * val)
 /*--------------------------------------------------------------------------*/
 void dictionary_unset(dictionary * d, const char * key)
 {
-	unsigned	hash ;
-	int			i ;
+    unsigned    hash ;
+    ssize_t      i ;
 
-	if (key == NULL) {
-		return;
-	}
+    if (key == NULL || d == NULL) {
+        return;
+    }
 
-	hash = dictionary_hash(key);
-	for (i=0 ; i<d->size ; i++) {
+    hash = dictionary_hash(key);
+    for (i=0 ; i<d->size ; i++) {
         if (d->key[i]==NULL)
             continue ;
         /* Compare hash */
-		if (hash==d->hash[i]) {
+        if (hash==d->hash[i]) {
             /* Compare string, to avoid hash collisions */
             if (!strcmp(key, d->key[i])) {
                 /* Found key */
                 break ;
-			}
-		}
-	}
+            }
+        }
+    }
     if (i>=d->size)
         /* Key not found */
         return ;
@@ -331,75 +350,31 @@ void dictionary_unset(dictionary * d, const char * key)
 
 /*-------------------------------------------------------------------------*/
 /**
-  @brief	Dump a dictionary to an opened file pointer.
-  @param	d	Dictionary to dump
-  @param	out	Opened file pointer.
-  @return	void
+  @brief    Dump a dictionary to an opened file pointer.
+  @param    d   Dictionary to dump
+  @param    f   Opened file pointer.
+  @return   void
 
   Dumps a dictionary onto an opened file pointer. Key pairs are printed out
   as @c [Key]=[Value], one per line. It is Ok to provide stdout or stderr as
   output file pointers.
  */
 /*--------------------------------------------------------------------------*/
-void dictionary_dump(dictionary * d, FILE * out)
+void dictionary_dump(const dictionary * d, FILE * out)
 {
-	int		i ;
-
-	if (d==NULL || out==NULL) return ;
-	if (d->n<1) {
-		fprintf(out, "empty dictionary\n");
-		return ;
-	}
-	for (i=0 ; i<d->size ; i++) {
+    ssize_t  i ;
+
+    if (d==NULL || out==NULL) return ;
+    if (d->n<1) {
+        fprintf(out, "empty dictionary\n");
+        return ;
+    }
+    for (i=0 ; i<d->size ; i++) {
         if (d->key[i]) {
             fprintf(out, "%20s\t[%s]\n",
                     d->key[i],
                     d->val[i] ? d->val[i] : "UNDEF");
         }
-	}
-	return ;
-}
-
-
-/* Test code */
-#ifdef TESTDIC
-#define NVALS 20000
-int main(int argc, char *argv[])
-{
-	dictionary	*	d ;
-	char	*	val ;
-	int			i ;
-	char		cval[90] ;
-
-	/* Allocate dictionary */
-	printf("allocating...\n");
-	d = dictionary_new(0);
-	
-	/* Set values in dictionary */
-	printf("setting %d values...\n", NVALS);
-	for (i=0 ; i<NVALS ; i++) {
-		sprintf(cval, "%04d", i);
-		dictionary_set(d, cval, "salut");
-	}
-	printf("getting %d values...\n", NVALS);
-	for (i=0 ; i<NVALS ; i++) {
-		sprintf(cval, "%04d", i);
-		val = dictionary_get(d, cval, DICT_INVALID_KEY);
-		if (val==DICT_INVALID_KEY) {
-			printf("cannot get value for key [%s]\n", cval);
-		}
-	}
-    printf("unsetting %d values...\n", NVALS);
-	for (i=0 ; i<NVALS ; i++) {
-		sprintf(cval, "%04d", i);
-		dictionary_unset(d, cval);
-	}
-    if (d->n != 0) {
-        printf("error deleting values\n");
     }
-	printf("deallocating...\n");
-	dictionary_del(d);
-	return 0 ;
+    return ;
 }
-#endif
-/* vim: set ts=4 et sw=4 tw=75 */
diff --git a/lib/boilerplate/iniparser/dictionary.h b/lib/boilerplate/iniparser/dictionary.h
index fa4dcb727..d04b6ce71 100644
--- a/lib/boilerplate/iniparser/dictionary.h
+++ b/lib/boilerplate/iniparser/dictionary.h
@@ -3,8 +3,6 @@
 /**
    @file    dictionary.h
    @author  N. Devillard
-   @date    Sep 2007
-   @version $Revision: 1.12 $
    @brief   Implements a dictionary for string variables.
 
    This module implements a simple dictionary object, i.e. a list
@@ -13,18 +11,11 @@
 */
 /*--------------------------------------------------------------------------*/
 
-/*
-	$Id: dictionary.h,v 1.12 2007-11-23 21:37:00 ndevilla Exp $
-	$Author: ndevilla $
-	$Date: 2007-11-23 21:37:00 $
-	$Revision: 1.12 $
-*/
-
 #ifndef _DICTIONARY_H_
 #define _DICTIONARY_H_
 
 /*---------------------------------------------------------------------------
-   								Includes
+                                Includes
  ---------------------------------------------------------------------------*/
 
 #include <stdio.h>
@@ -32,14 +23,18 @@
 #include <string.h>
 #include <unistd.h>
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 /*---------------------------------------------------------------------------
-   								New types
+                                New types
  ---------------------------------------------------------------------------*/
 
 
 /*-------------------------------------------------------------------------*/
 /**
-  @brief	Dictionary object
+  @brief    Dictionary object
 
   This object contains a list of string/string associations. Each
   association is identified by a unique string key. Looking up values
@@ -48,16 +43,16 @@
  */
 /*-------------------------------------------------------------------------*/
 typedef struct _dictionary_ {
-	int				n ;		/** Number of entries in dictionary */
-	int				size ;	/** Storage size */
-	char 		**	val ;	/** List of string values */
-	char 		**  key ;	/** List of string keys */
-	unsigned	 *	hash ;	/** List of hash values for keys */
+    int             n ;     /** Number of entries in dictionary */
+    ssize_t         size ;  /** Storage size */
+    char        **  val ;   /** List of string values */
+    char        **  key ;   /** List of string keys */
+    unsigned     *  hash ;  /** List of hash values for keys */
 } dictionary ;
 
 
 /*---------------------------------------------------------------------------
-  							Function prototypes
+                            Function prototypes
  ---------------------------------------------------------------------------*/
 
 /*-------------------------------------------------------------------------*/
@@ -85,7 +80,7 @@ unsigned dictionary_hash(const char * key);
   dictionary, give size=0.
  */
 /*--------------------------------------------------------------------------*/
-dictionary * dictionary_new(int size);
+dictionary * dictionary_new(size_t size);
 
 /*-------------------------------------------------------------------------*/
 /**
@@ -112,7 +107,7 @@ void dictionary_del(dictionary * vd);
   dictionary object, you should not try to free it or modify it.
  */
 /*--------------------------------------------------------------------------*/
-const char * dictionary_get(dictionary * d, const char * key, const char * def);
+const char * dictionary_get(const dictionary * d, const char * key, const char * def);
 
 
 /*-------------------------------------------------------------------------*/
@@ -161,7 +156,7 @@ void dictionary_unset(dictionary * d, const char * key);
 /**
   @brief    Dump a dictionary to an opened file pointer.
   @param    d   Dictionary to dump
-  @param    out   Opened file pointer.
+  @param    f   Opened file pointer.
   @return   void
 
   Dumps a dictionary onto an opened file pointer. Key pairs are printed out
@@ -169,6 +164,10 @@ void dictionary_unset(dictionary * d, const char * key);
   output file pointers.
  */
 /*--------------------------------------------------------------------------*/
-void dictionary_dump(dictionary * d, FILE * out);
+void dictionary_dump(const dictionary * d, FILE * out);
+
+#ifdef __cplusplus
+}
+#endif
 
 #endif
diff --git a/lib/boilerplate/iniparser/iniparser.c b/lib/boilerplate/iniparser/iniparser.c
index 5b2094a00..f1d165896 100644
--- a/lib/boilerplate/iniparser/iniparser.c
+++ b/lib/boilerplate/iniparser/iniparser.c
@@ -3,19 +3,12 @@
 /**
    @file    iniparser.c
    @author  N. Devillard
-   @date    Sep 2007
-   @version 3.0
    @brief   Parser for ini files.
 */
 /*--------------------------------------------------------------------------*/
-/*
-    $Id: iniparser.c,v 2.18 2008-01-03 18:35:39 ndevilla Exp $
-    $Revision: 2.18 $
-    $Date: 2008-01-03 18:35:39 $
-*/
 /*---------------------------- Includes ------------------------------------*/
 #include <ctype.h>
-#include <errno.h>
+#include <stdarg.h>
 #include "iniparser.h"
 
 /*---------------------------- Defines -------------------------------------*/
@@ -39,65 +32,115 @@ typedef enum _line_status_ {
 
 /*-------------------------------------------------------------------------*/
 /**
-  @brief	Convert a string to lowercase.
-  @param	s	String to convert.
-  @return	ptr to statically allocated string.
-
-  This function returns a pointer to a statically allocated string
-  containing a lowercased version of the input string. Do not free
-  or modify the returned string! Since the returned string is statically
-  allocated, it will be modified at each function call (not re-entrant).
+  @brief    Convert a string to lowercase.
+  @param    in   String to convert.
+  @param    out Output buffer.
+  @param    len Size of the out buffer.
+  @return   ptr to the out buffer or NULL if an error occured.
+
+  This function convert a string into lowercase.
+  At most len - 1 elements of the input string will be converted.
  */
 /*--------------------------------------------------------------------------*/
-
-static char strbuf[ASCIILINESZ+1];
-
-static char * strlwc(const char * s)
+static const char * strlwc(const char * in, char *out, unsigned len)
 {
-    int i ;
+    unsigned i ;
 
-    if (s==NULL) return NULL ;
-    memset(strbuf, 0, ASCIILINESZ+1);
+    if (in==NULL || out == NULL || len==0) return NULL ;
     i=0 ;
-    while (s[i] && i<ASCIILINESZ) {
-        strbuf[i] = (char)tolower((int)s[i]);
+    while (in[i] != '\0' && i < len-1) {
+        out[i] = (char)tolower((int)in[i]);
         i++ ;
     }
-    strbuf[ASCIILINESZ]=(char)0;
-    return strbuf ;
+    out[i] = '\0';
+    return out ;
+}
+
+/*-------------------------------------------------------------------------*/
+/**
+  @brief    Duplicate a string
+  @param    s String to duplicate
+  @return   Pointer to a newly allocated string, to be freed with free()
+
+  This is a replacement for strdup(). This implementation is provided
+  for systems that do not have it.
+ */
+/*--------------------------------------------------------------------------*/
+static char * xstrdup(const char * s)
+{
+    char * t ;
+    size_t len ;
+    if (!s)
+        return NULL ;
+
+    len = strlen(s) + 1 ;
+    t = (char*) malloc(len) ;
+    if (t) {
+        memcpy(t, s, len) ;
+    }
+    return t ;
+}
+
+/*-------------------------------------------------------------------------*/
+/**
+  @brief    Remove blanks at the beginning and the end of a string.
+  @param    str  String to parse and alter.
+  @return   unsigned New size of the string.
+ */
+/*--------------------------------------------------------------------------*/
+static unsigned strstrip(char * s)
+{
+    char *last = NULL ;
+    char *dest = s;
+
+    if (s==NULL) return 0;
+
+    last = s + strlen(s);
+    while (isspace((int)*s) && *s) s++;
+    while (last > s) {
+        if (!isspace((int)*(last-1)))
+            break ;
+        last -- ;
+    }
+    *last = (char)0;
+
+    memmove(dest,s,last - s + 1);
+    return last - s;
+}
+
+/*-------------------------------------------------------------------------*/
+/**
+  @brief    Default error callback for iniparser: wraps `fprintf(stderr, ...)`.
+ */
+/*--------------------------------------------------------------------------*/
+static int default_error_callback(const char *format, ...)
+{
+  int ret;
+  va_list argptr;
+  va_start(argptr, format);
+  ret = vfprintf(stderr, format, argptr);
+  va_end(argptr);
+  return ret;
 }
 
+static int (*iniparser_error_callback)(const char*, ...) = default_error_callback;
+
 /*-------------------------------------------------------------------------*/
 /**
-  @brief	Remove blanks at the beginning and the end of a string.
-  @param	s	String to parse.
-  @return	ptr to statically allocated string.
-
-  This function returns a pointer to a statically allocated string,
-  which is identical to the input string, except that all blank
-  characters at the end and the beg. of the string have been removed.
-  Do not free or modify the returned string! Since the returned string
-  is statically allocated, it will be modified at each function call
-  (not re-entrant).
+  @brief    Configure a function to receive the error messages.
+  @param    errback  Function to call.
+
+  By default, the error will be printed on stderr. If a null pointer is passed
+  as errback the error callback will be switched back to default.
  */
 /*--------------------------------------------------------------------------*/
-static char * strstrip(const char * s)
+void iniparser_set_error_callback(int (*errback)(const char *, ...))
 {
-	char * last ;
-	
-    if (s==NULL) return NULL ;
-    
-	while (isspace((int)*s) && *s) s++;
-	memset(strbuf, 0, ASCIILINESZ+1);
-	strcpy(strbuf, s);
-	last = strbuf + strlen(strbuf);
-	while (last > strbuf) {
-		if (!isspace((int)*(last-1)))
-			break ;
-		last -- ;
-	}
-	*last = (char)0;
-	return (char*)strbuf ;
+  if (errback) {
+    iniparser_error_callback = errback;
+  } else {
+    iniparser_error_callback = default_error_callback;
+  }
 }
 
 /*-------------------------------------------------------------------------*/
@@ -118,7 +161,7 @@ static char * strstrip(const char * s)
   This function returns -1 in case of error.
  */
 /*--------------------------------------------------------------------------*/
-int iniparser_getnsec(dictionary * d)
+int iniparser_getnsec(const dictionary * d)
 {
     int i ;
     int nsec ;
@@ -149,7 +192,7 @@ int iniparser_getnsec(dictionary * d)
   This function returns NULL in case of error.
  */
 /*--------------------------------------------------------------------------*/
-const char * iniparser_getsecname(dictionary * d, int n)
+const char * iniparser_getsecname(const dictionary * d, int n)
 {
     int i ;
     int foundsec ;
@@ -184,7 +227,7 @@ const char * iniparser_getsecname(dictionary * d, int n)
   purposes mostly.
  */
 /*--------------------------------------------------------------------------*/
-void iniparser_dump(dictionary * d, FILE * f)
+void iniparser_dump(const dictionary * d, FILE * f)
 {
     int     i ;
 
@@ -212,13 +255,11 @@ void iniparser_dump(dictionary * d, FILE * f)
   It is Ok to specify @c stderr or @c stdout as output files.
  */
 /*--------------------------------------------------------------------------*/
-void iniparser_dump_ini(dictionary * d, FILE * f)
+void iniparser_dump_ini(const dictionary * d, FILE * f)
 {
-    int     i, j ;
-    char    keym[ASCIILINESZ+1];
-    int     nsec ;
-    const char *  secname ;
-    int     seclen ;
+    int          i ;
+    int          nsec ;
+    const char * secname ;
 
     if (d==NULL || f==NULL) return ;
 
@@ -234,24 +275,126 @@ void iniparser_dump_ini(dictionary * d, FILE * f)
     }
     for (i=0 ; i<nsec ; i++) {
         secname = iniparser_getsecname(d, i) ;
-        seclen  = (int)strlen(secname);
-        fprintf(f, "\n[%s]\n", secname);
-        sprintf(keym, "%s:", secname);
-        for (j=0 ; j<d->size ; j++) {
-            if (d->key[j]==NULL)
-                continue ;
-            if (!strncmp(d->key[j], keym, seclen+1)) {
-                fprintf(f,
-                        "%-30s = %s\n",
-                        d->key[j]+seclen+1,
-                        d->val[j] ? d->val[j] : "");
-            }
+        iniparser_dumpsection_ini(d, secname, f);
+    }
+    fprintf(f, "\n");
+    return ;
+}
+
+/*-------------------------------------------------------------------------*/
+/**
+  @brief    Save a dictionary section to a loadable ini file
+  @param    d   Dictionary to dump
+  @param    s   Section name of dictionary to dump
+  @param    f   Opened file pointer to dump to
+  @return   void
+
+  This function dumps a given section of a given dictionary into a loadable ini
+  file.  It is Ok to specify @c stderr or @c stdout as output files.
+ */
+/*--------------------------------------------------------------------------*/
+void iniparser_dumpsection_ini(const dictionary * d, const char * s, FILE * f)
+{
+    int     j ;
+    char    keym[ASCIILINESZ+1];
+    int     seclen ;
+
+    if (d==NULL || f==NULL) return ;
+    if (! iniparser_find_entry(d, s)) return ;
+
+    seclen  = (int)strlen(s);
+    fprintf(f, "\n[%s]\n", s);
+    sprintf(keym, "%s:", s);
+    for (j=0 ; j<d->size ; j++) {
+        if (d->key[j]==NULL)
+            continue ;
+        if (!strncmp(d->key[j], keym, seclen+1)) {
+            fprintf(f,
+                    "%-30s = %s\n",
+                    d->key[j]+seclen+1,
+                    d->val[j] ? d->val[j] : "");
         }
     }
     fprintf(f, "\n");
     return ;
 }
 
+/*-------------------------------------------------------------------------*/
+/**
+  @brief    Get the number of keys in a section of a dictionary.
+  @param    d   Dictionary to examine
+  @param    s   Section name of dictionary to examine
+  @return   Number of keys in section
+ */
+/*--------------------------------------------------------------------------*/
+int iniparser_getsecnkeys(const dictionary * d, const char * s)
+{
+    int     seclen, nkeys ;
+    char    keym[ASCIILINESZ+1];
+    int j ;
+
+    nkeys = 0;
+
+    if (d==NULL) return nkeys;
+    if (! iniparser_find_entry(d, s)) return nkeys;
+
+    seclen  = (int)strlen(s);
+    strlwc(s, keym, sizeof(keym));
+    keym[seclen] = ':';
+
+    for (j=0 ; j<d->size ; j++) {
+        if (d->key[j]==NULL)
+            continue ;
+        if (!strncmp(d->key[j], keym, seclen+1))
+            nkeys++;
+    }
+
+    return nkeys;
+
+}
+
+/*-------------------------------------------------------------------------*/
+/**
+  @brief    Get the number of keys in a section of a dictionary.
+  @param    d    Dictionary to examine
+  @param    s    Section name of dictionary to examine
+  @param    keys Already allocated array to store the keys in
+  @return   The pointer passed as `keys` argument or NULL in case of error
+
+  This function queries a dictionary and finds all keys in a given section.
+  The keys argument should be an array of pointers which size has been
+  determined by calling `iniparser_getsecnkeys` function prior to this one.
+
+  Each pointer in the returned char pointer-to-pointer is pointing to
+  a string allocated in the dictionary; do not free or modify them.
+ */
+/*--------------------------------------------------------------------------*/
+const char ** iniparser_getseckeys(const dictionary * d, const char * s, const char ** keys)
+{
+    int i, j, seclen ;
+    char keym[ASCIILINESZ+1];
+
+    if (d==NULL || keys==NULL) return NULL;
+    if (! iniparser_find_entry(d, s)) return NULL;
+
+    seclen  = (int)strlen(s);
+    strlwc(s, keym, sizeof(keym));
+    keym[seclen] = ':';
+
+    i = 0;
+
+    for (j=0 ; j<d->size ; j++) {
+        if (d->key[j]==NULL)
+            continue ;
+        if (!strncmp(d->key[j], keym, seclen+1)) {
+            keys[i] = d->key[j];
+            i++;
+        }
+    }
+
+    return keys;
+}
+
 /*-------------------------------------------------------------------------*/
 /**
   @brief    Get the string associated to a key
@@ -267,24 +410,27 @@ void iniparser_dump_ini(dictionary * d, FILE * f)
   the dictionary, do not free or modify it.
  */
 /*--------------------------------------------------------------------------*/
-const char * iniparser_getstring(dictionary * d, const char * key, const char * def)
+const char * iniparser_getstring(const dictionary * d, const char * key, const char * def)
 {
-    char * lc_key ;
+    const char * lc_key ;
+    const char * sval ;
+    char tmp_str[ASCIILINESZ+1];
 
     if (d==NULL || key==NULL)
         return def ;
 
-    lc_key = strlwc(key);
-    return dictionary_get(d, lc_key, def);
+    lc_key = strlwc(key, tmp_str, sizeof(tmp_str));
+    sval = dictionary_get(d, lc_key, def);
+    return sval ;
 }
 
 /*-------------------------------------------------------------------------*/
 /**
-  @brief    Get the string associated to a key, convert to an int
+  @brief    Get the string associated to a key, convert to an long int
   @param    d Dictionary to search
   @param    key Key string to look for
   @param    notfound Value to return in case of error
-  @return   integer
+  @return   long integer
 
   This function queries a dictionary for a key. A key as read from an
   ini file is given as "section:key". If the key cannot be found,
@@ -305,13 +451,46 @@ const char * iniparser_getstring(dictionary * d, const char * key, const char *
   Credits: Thanks to A. Becker for suggesting strtol()
  */
 /*--------------------------------------------------------------------------*/
-int iniparser_getint(dictionary * d, const char * key, int notfound)
+long int iniparser_getlongint(const dictionary * d, const char * key, long int notfound)
 {
-    const char    *   str ;
+    const char * str ;
 
     str = iniparser_getstring(d, key, INI_INVALID_KEY);
     if (str==INI_INVALID_KEY) return notfound ;
-    return (int)strtol(str, NULL, 0);
+    return strtol(str, NULL, 0);
+}
+
+
+/*-------------------------------------------------------------------------*/
+/**
+  @brief    Get the string associated to a key, convert to an int
+  @param    d Dictionary to search
+  @param    key Key string to look for
+  @param    notfound Value to return in case of error
+  @return   integer
+
+  This function queries a dictionary for a key. A key as read from an
+  ini file is given as "section:key". If the key cannot be found,
+  the notfound value is returned.
+
+  Supported values for integers include the usual C notation
+  so decimal, octal (starting with 0) and hexadecimal (starting with 0x)
+  are supported. Examples:
+
+  "42"      ->  42
+  "042"     ->  34 (octal -> decimal)
+  "0x42"    ->  66 (hexa  -> decimal)
+
+  Warning: the conversion may overflow in various ways. Conversion is
+  totally outsourced to strtol(), see the associated man page for overflow
+  handling.
+
+  Credits: Thanks to A. Becker for suggesting strtol()
+ */
+/*--------------------------------------------------------------------------*/
+int iniparser_getint(const dictionary * d, const char * key, int notfound)
+{
+    return (int)iniparser_getlongint(d, key, notfound);
 }
 
 /*-------------------------------------------------------------------------*/
@@ -327,9 +506,9 @@ int iniparser_getint(dictionary * d, const char * key, int notfound)
   the notfound value is returned.
  */
 /*--------------------------------------------------------------------------*/
-double iniparser_getdouble(dictionary * d, const char * key, double notfound)
+double iniparser_getdouble(const dictionary * d, const char * key, double notfound)
 {
-    const char    *   str ;
+    const char * str ;
 
     str = iniparser_getstring(d, key, INI_INVALID_KEY);
     if (str==INI_INVALID_KEY) return notfound ;
@@ -368,10 +547,10 @@ double iniparser_getdouble(dictionary * d, const char * key, double notfound)
   necessarily have to be 0 or 1.
  */
 /*--------------------------------------------------------------------------*/
-int iniparser_getboolean(dictionary * d, const char * key, int notfound)
+int iniparser_getboolean(const dictionary * d, const char * key, int notfound)
 {
-    const char    *   c ;
-    int         ret ;
+    int          ret ;
+    const char * c ;
 
     c = iniparser_getstring(d, key, INI_INVALID_KEY);
     if (c==INI_INVALID_KEY) return notfound ;
@@ -397,10 +576,7 @@ int iniparser_getboolean(dictionary * d, const char * key, int notfound)
   of querying for the presence of sections in a dictionary.
  */
 /*--------------------------------------------------------------------------*/
-int iniparser_find_entry(
-    dictionary  *   ini,
-    const char        *   entry
-)
+int iniparser_find_entry(const dictionary * ini, const char * entry)
 {
     int found=0 ;
     if (iniparser_getstring(ini, entry, INI_INVALID_KEY)!=INI_INVALID_KEY) {
@@ -418,13 +594,14 @@ int iniparser_find_entry(
   @return   int 0 if Ok, -1 otherwise.
 
   If the given entry can be found in the dictionary, it is modified to
-  contain the provided value. If it cannot be found, -1 is returned.
+  contain the provided value. If it cannot be found, the entry is created.
   It is Ok to set val to NULL.
  */
 /*--------------------------------------------------------------------------*/
 int iniparser_set(dictionary * ini, const char * entry, const char * val)
 {
-    return dictionary_set(ini, strlwc(entry), val) ;
+    char tmp_str[ASCIILINESZ+1];
+    return dictionary_set(ini, strlwc(entry, tmp_str, sizeof(tmp_str)), val) ;
 }
 
 /*-------------------------------------------------------------------------*/
@@ -439,12 +616,13 @@ int iniparser_set(dictionary * ini, const char * entry, const char * val)
 /*--------------------------------------------------------------------------*/
 void iniparser_unset(dictionary * ini, const char * entry)
 {
-    dictionary_unset(ini, strlwc(entry));
+    char tmp_str[ASCIILINESZ+1];
+    dictionary_unset(ini, strlwc(entry, tmp_str, sizeof(tmp_str)));
 }
 
 /*-------------------------------------------------------------------------*/
 /**
-  @brief	Load a single line from an INI file
+  @brief    Load a single line from an INI file
   @param    input_line  Input line, may be concatenated multi-line input
   @param    section     Output space to store section
   @param    key         Output space to store key
@@ -457,34 +635,39 @@ static line_status iniparser_line(
     char * section,
     char * key,
     char * value)
-{   
+{
     line_status sta ;
-    char        line[ASCIILINESZ+1];
-    int         len ;
+    char * line = NULL;
+    size_t      len ;
 
-    strcpy(line, strstrip(input_line));
-    len = (int)strlen(line);
+    line = xstrdup(input_line);
+    len = strstrip(line);
 
     sta = LINE_UNPROCESSED ;
     if (len<1) {
         /* Empty line */
         sta = LINE_EMPTY ;
-    } else if (line[0]=='#') {
+    } else if (line[0]=='#' || line[0]==';') {
         /* Comment line */
-        sta = LINE_COMMENT ; 
+        sta = LINE_COMMENT ;
     } else if (line[0]=='[' && line[len-1]==']') {
         /* Section name */
         sscanf(line, "[%[^]]", section);
-        strcpy(section, strstrip(section));
-        strcpy(section, strlwc(section));
+        strstrip(section);
+        strlwc(section, section, len);
         sta = LINE_SECTION ;
     } else if (sscanf (line, "%[^=] = \"%[^\"]\"", key, value) == 2
-           ||  sscanf (line, "%[^=] = '%[^\']'",   key, value) == 2
-           ||  sscanf (line, "%[^=] = %[^;#]",     key, value) == 2) {
-        /* Usual key=value, with or without comments */
-        strcpy(key, strstrip(key));
-        strcpy(key, strlwc(key));
-        strcpy(value, strstrip(value));
+           ||  sscanf (line, "%[^=] = '%[^\']'",   key, value) == 2) {
+        /* Usual key=value with quotes, with or without comments */
+        strstrip(key);
+        strlwc(key, key, len);
+        /* Don't strip spaces from values surrounded with quotes */
+        sta = LINE_VALUE ;
+    } else if (sscanf (line, "%[^=] = %[^;#]", key, value) == 2) {
+        /* Usual key=value without quotes, with or without comments */
+        strstrip(key);
+        strlwc(key, key, len);
+        strstrip(value);
         /*
          * sscanf cannot handle '' or "" as empty values
          * this is done here
@@ -501,14 +684,16 @@ static line_status iniparser_line(
          * key=;
          * key=#
          */
-        strcpy(key, strstrip(key));
-        strcpy(key, strlwc(key));
+        strstrip(key);
+        strlwc(key, key, len);
         value[0]=0 ;
         sta = LINE_VALUE ;
     } else {
         /* Generate syntax error */
         sta = LINE_ERROR ;
     }
+
+    free(line);
     return sta ;
 }
 
@@ -528,44 +713,33 @@ static line_status iniparser_line(
 /*--------------------------------------------------------------------------*/
 dictionary * iniparser_load(const char * ininame)
 {
-    char *buf;
     FILE * in ;
 
-    char *line;
-    char *section;
-    char *key;
-    char *tmp;
-    char *val;
+    char line    [ASCIILINESZ+1] ;
+    char section [ASCIILINESZ+1] ;
+    char key     [ASCIILINESZ+1] ;
+    char tmp     [(ASCIILINESZ * 2) + 2] ;
+    char val     [ASCIILINESZ+1] ;
 
     int  last=0 ;
     int  len ;
     int  lineno=0 ;
     int  errs=0;
-    int  ret;
+    int  mem_err=0;
 
     dictionary * dict ;
 
-    if ((in=fopen(ininame, "r"))==NULL)
+    if ((in=fopen(ininame, "r"))==NULL) {
+        iniparser_error_callback("iniparser: cannot open %s\n", ininame);
         return NULL ;
+    }
 
     dict = dictionary_new(0) ;
     if (!dict) {
         fclose(in);
-	errno = ENOMEM;
         return NULL ;
     }
 
-    buf = malloc((ASCIILINESZ+1) * 5);
-    if (buf == NULL) {
-	    errno = -ENOMEM;
-	    return NULL;
-    }
-    line = buf;
-    section = line + ASCIILINESZ + 1;
-    key = section + ASCIILINESZ + 1;
-    tmp = key + ASCIILINESZ + 1;
-    val = tmp + ASCIILINESZ + 1;
-
     memset(line,    0, ASCIILINESZ);
     memset(section, 0, ASCIILINESZ);
     memset(key,     0, ASCIILINESZ);
@@ -575,18 +749,16 @@ dictionary * iniparser_load(const char * ininame)
     while (fgets(line+last, ASCIILINESZ-last, in)!=NULL) {
         lineno++ ;
         len = (int)strlen(line)-1;
+        if (len<=0)
+            continue;
         /* Safety check against buffer overflows */
-        if (last > 0 && line[len]!='\n') {
-#if 0
-            warning(anon_scope,
-                    "iniparser: input line too long in %s (%d)\n",
-                    ininame,
-                    lineno);
-#endif
+        if (line[len]!='\n' && !feof(in)) {
+            iniparser_error_callback(
+              "iniparser: input line too long in %s (%d)\n",
+              ininame,
+              lineno);
             dictionary_del(dict);
             fclose(in);
-	    free(buf);
-	    errno = EINVAL;
             return NULL ;
         }
         /* Get rid of \n and spaces at end of line */
@@ -595,8 +767,11 @@ dictionary * iniparser_load(const char * ininame)
             line[len]=0 ;
             len-- ;
         }
+        if (len < 0) { /* Line was entirely \n and/or spaces */
+            len = 0;
+        }
         /* Detect multi-line */
-        if (len >= 0 && line[len]=='\\') {
+        if (line[len]=='\\') {
             /* Multi-line value */
             last=len ;
             continue ;
@@ -609,24 +784,20 @@ dictionary * iniparser_load(const char * ininame)
             break ;
 
             case LINE_SECTION:
-            errs = dictionary_set(dict, section, NULL);
+            mem_err = dictionary_set(dict, section, NULL);
             break ;
 
             case LINE_VALUE:
             sprintf(tmp, "%s:%s", section, key);
-            errs = dictionary_set(dict, tmp, val) ;
+            mem_err = dictionary_set(dict, tmp, val);
             break ;
 
-	case LINE_ERROR:
-#if 0
-            printf("iniparser: syntax error in %s (%d):\n",
-                    ininame,
-                    lineno);
-            printf( "-> %s\n", line);
-
-#endif
-
-	    ret = EINVAL;
+            case LINE_ERROR:
+            iniparser_error_callback(
+              "iniparser: syntax error in %s (%d):\n-> %s\n",
+              ininame,
+              lineno,
+              line);
             errs++ ;
             break;
 
@@ -635,18 +806,16 @@ dictionary * iniparser_load(const char * ininame)
         }
         memset(line, 0, ASCIILINESZ);
         last=0;
-        if (errs<0) {
-	    ret = ENOMEM;
+        if (mem_err<0) {
+            iniparser_error_callback("iniparser: memory allocation failure\n");
             break ;
         }
     }
-    fclose(in);
-    free(buf);
     if (errs) {
         dictionary_del(dict);
         dict = NULL ;
-	errno = ret;
     }
+    fclose(in);
     return dict ;
 }
 
@@ -665,5 +834,3 @@ void iniparser_freedict(dictionary * d)
 {
     dictionary_del(d);
 }
-
-/* vim: set ts=4 et sw=4 tw=75 */
diff --git a/lib/boilerplate/iniparser/iniparser.h b/lib/boilerplate/iniparser/iniparser.h
index d454cef34..37ff7b71b 100644
--- a/lib/boilerplate/iniparser/iniparser.h
+++ b/lib/boilerplate/iniparser/iniparser.h
@@ -3,22 +3,15 @@
 /**
    @file    iniparser.h
    @author  N. Devillard
-   @date    Sep 2007
-   @version 3.0
    @brief   Parser for ini files.
 */
 /*--------------------------------------------------------------------------*/
 
-/*
-	$Id: iniparser.h,v 1.24 2007-11-23 21:38:19 ndevilla Exp $
-	$Revision: 1.24 $
-*/
-
 #ifndef _INIPARSER_H_
 #define _INIPARSER_H_
 
 /*---------------------------------------------------------------------------
-   								Includes
+                                Includes
  ---------------------------------------------------------------------------*/
 
 #include <stdio.h>
@@ -34,12 +27,21 @@
 
 #include "dictionary.h"
 
-/*---------------------------------------------------------------------------
-   								Macros
- ---------------------------------------------------------------------------*/
-/** For backwards compatibility only */
-#define iniparser_getstr(d, k)  iniparser_getstring(d, k, NULL)
-#define iniparser_setstr        iniparser_setstring
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*-------------------------------------------------------------------------*/
+/**
+  @brief    Configure a function to receive the error messages.
+  @param    errback  Function to call.
+
+  By default, the error will be printed on stderr. If a null pointer is passed
+  as errback the error callback will be switched back to default.
+ */
+/*--------------------------------------------------------------------------*/
+
+void iniparser_set_error_callback(int (*errback)(const char *, ...));
 
 /*-------------------------------------------------------------------------*/
 /**
@@ -60,7 +62,7 @@
  */
 /*--------------------------------------------------------------------------*/
 
-int iniparser_getnsec(dictionary * d);
+int iniparser_getnsec(const dictionary * d);
 
 
 /*-------------------------------------------------------------------------*/
@@ -78,7 +80,7 @@ int iniparser_getnsec(dictionary * d);
  */
 /*--------------------------------------------------------------------------*/
 
-const char * iniparser_getsecname(dictionary * d, int n);
+const char * iniparser_getsecname(const dictionary * d, int n);
 
 
 /*-------------------------------------------------------------------------*/
@@ -93,7 +95,22 @@ const char * iniparser_getsecname(dictionary * d, int n);
  */
 /*--------------------------------------------------------------------------*/
 
-void iniparser_dump_ini(dictionary * d, FILE * f);
+void iniparser_dump_ini(const dictionary * d, FILE * f);
+
+/*-------------------------------------------------------------------------*/
+/**
+  @brief    Save a dictionary section to a loadable ini file
+  @param    d   Dictionary to dump
+  @param    s   Section name of dictionary to dump
+  @param    f   Opened file pointer to dump to
+  @return   void
+
+  This function dumps a given section of a given dictionary into a loadable ini
+  file.  It is Ok to specify @c stderr or @c stdout as output files.
+ */
+/*--------------------------------------------------------------------------*/
+
+void iniparser_dumpsection_ini(const dictionary * d, const char * s, FILE * f);
 
 /*-------------------------------------------------------------------------*/
 /**
@@ -108,7 +125,36 @@ void iniparser_dump_ini(dictionary * d, FILE * f);
   purposes mostly.
  */
 /*--------------------------------------------------------------------------*/
-void iniparser_dump(dictionary * d, FILE * f);
+void iniparser_dump(const dictionary * d, FILE * f);
+
+/*-------------------------------------------------------------------------*/
+/**
+  @brief    Get the number of keys in a section of a dictionary.
+  @param    d   Dictionary to examine
+  @param    s   Section name of dictionary to examine
+  @return   Number of keys in section
+ */
+/*--------------------------------------------------------------------------*/
+int iniparser_getsecnkeys(const dictionary * d, const char * s);
+
+/*-------------------------------------------------------------------------*/
+/**
+  @brief    Get the number of keys in a section of a dictionary.
+  @param    d    Dictionary to examine
+  @param    s    Section name of dictionary to examine
+  @param    keys Already allocated array to store the keys in
+  @return   The pointer passed as `keys` argument or NULL in case of error
+
+  This function queries a dictionary and finds all keys in a given section.
+  The keys argument should be an array of pointers which size has been
+  determined by calling `iniparser_getsecnkeys` function prior to this one.
+
+  Each pointer in the returned char pointer-to-pointer is pointing to
+  a string allocated in the dictionary; do not free or modify them.
+ */
+/*--------------------------------------------------------------------------*/
+const char ** iniparser_getseckeys(const dictionary * d, const char * s, const char ** keys);
+
 
 /*-------------------------------------------------------------------------*/
 /**
@@ -125,7 +171,7 @@ void iniparser_dump(dictionary * d, FILE * f);
   the dictionary, do not free or modify it.
  */
 /*--------------------------------------------------------------------------*/
-const char * iniparser_getstring(dictionary * d, const char * key, const char * def);
+const char * iniparser_getstring(const dictionary * d, const char * key, const char * def);
 
 /*-------------------------------------------------------------------------*/
 /**
@@ -154,7 +200,35 @@ const char * iniparser_getstring(dictionary * d, const char * key, const char *
   Credits: Thanks to A. Becker for suggesting strtol()
  */
 /*--------------------------------------------------------------------------*/
-int iniparser_getint(dictionary * d, const char * key, int notfound);
+int iniparser_getint(const dictionary * d, const char * key, int notfound);
+
+/*-------------------------------------------------------------------------*/
+/**
+  @brief    Get the string associated to a key, convert to an long int
+  @param    d Dictionary to search
+  @param    key Key string to look for
+  @param    notfound Value to return in case of error
+  @return   integer
+
+  This function queries a dictionary for a key. A key as read from an
+  ini file is given as "section:key". If the key cannot be found,
+  the notfound value is returned.
+
+  Supported values for integers include the usual C notation
+  so decimal, octal (starting with 0) and hexadecimal (starting with 0x)
+  are supported. Examples:
+
+  - "42"      ->  42
+  - "042"     ->  34 (octal -> decimal)
+  - "0x42"    ->  66 (hexa  -> decimal)
+
+  Warning: the conversion may overflow in various ways. Conversion is
+  totally outsourced to strtol(), see the associated man page for overflow
+  handling.
+ */
+/*--------------------------------------------------------------------------*/
+long int iniparser_getlongint(const dictionary * d, const char * key, long int notfound);
+
 
 /*-------------------------------------------------------------------------*/
 /**
@@ -169,7 +243,7 @@ int iniparser_getint(dictionary * d, const char * key, int notfound);
   the notfound value is returned.
  */
 /*--------------------------------------------------------------------------*/
-double iniparser_getdouble(dictionary * d, const char * key, double notfound);
+double iniparser_getdouble(const dictionary * d, const char * key, double notfound);
 
 /*-------------------------------------------------------------------------*/
 /**
@@ -203,7 +277,7 @@ double iniparser_getdouble(dictionary * d, const char * key, double notfound);
   necessarily have to be 0 or 1.
  */
 /*--------------------------------------------------------------------------*/
-int iniparser_getboolean(dictionary * d, const char * key, int notfound);
+int iniparser_getboolean(const dictionary * d, const char * key, int notfound);
 
 
 /*-------------------------------------------------------------------------*/
@@ -212,17 +286,16 @@ int iniparser_getboolean(dictionary * d, const char * key, int notfound);
   @param    ini     Dictionary to modify.
   @param    entry   Entry to modify (entry name)
   @param    val     New value to associate to the entry.
-  @return   int 0 if Ok, -1 otherwise.
+  @return   int     0 if Ok, -1 otherwise.
 
   If the given entry can be found in the dictionary, it is modified to
-  contain the provided value. If it cannot be found, -1 is returned.
+  contain the provided value. If it cannot be found, the entry is created.
   It is Ok to set val to NULL.
  */
 /*--------------------------------------------------------------------------*/
-int iniparser_setstring(dictionary * ini, const char * entry, const char * val);
-
 int iniparser_set(dictionary * ini, const char * entry, const char * val);
 
+
 /*-------------------------------------------------------------------------*/
 /**
   @brief    Delete an entry in a dictionary
@@ -247,7 +320,7 @@ void iniparser_unset(dictionary * ini, const char * entry);
   of querying for the presence of sections in a dictionary.
  */
 /*--------------------------------------------------------------------------*/
-int iniparser_find_entry(dictionary * ini, const char * entry) ;
+int iniparser_find_entry(const dictionary * ini, const char * entry) ;
 
 /*-------------------------------------------------------------------------*/
 /**
@@ -278,4 +351,8 @@ dictionary * iniparser_load(const char * ininame);
 /*--------------------------------------------------------------------------*/
 void iniparser_freedict(dictionary * d);
 
+#ifdef __cplusplus
+}
+#endif
+
 #endif
-- 
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