add new files

3 files changed, 1132 insertions, 0 deletions

diff --git a/list.h b/list.h
new file mode 100644
index 0000000..614d34b
--- /dev/null
+++ b/list.h
@@ -0,0 +1,168 @@
+#ifndef _LIST_H_
+#define _LIST_H_
+/*
+ * Simple doubly linked list implementation.
+ *	-- shameless stolen from the linux kernel sources
+ *
+ * Some of the internal functions ("__xxx") are useful when
+ * manipulating whole lists rather than single entries, as
+ * sometimes we already know the next/prev entries and we can
+ * generate better code by using them directly rather than
+ * using the generic single-entry routines.
+ */
+
+struct list_head {
+	struct list_head *next, *prev;
+};
+
+#define LIST_HEAD_INIT(name) { &(name), &(name) }
+
+#define LIST_HEAD(name) \
+	struct list_head name = LIST_HEAD_INIT(name)
+
+#define INIT_LIST_HEAD(ptr) do { \
+	(ptr)->next = (ptr); (ptr)->prev = (ptr); \
+} while (0)
+
+/*
+ * Insert a new entry between two known consecutive entries. 
+ *
+ * This is only for internal list manipulation where we know
+ * the prev/next entries already!
+ */
+static __inline__ void __list_add(struct list_head * new,
+	struct list_head * prev,
+	struct list_head * next)
+{
+	next->prev = new;
+	new->next = next;
+	new->prev = prev;
+	prev->next = new;
+}
+
+/**
+ * list_add - add a new entry
+ * @new: new entry to be added
+ * @head: list head to add it after
+ *
+ * Insert a new entry after the specified head.
+ * This is good for implementing stacks.
+ */
+static __inline__ void list_add(struct list_head *new, struct list_head *head)
+{
+	__list_add(new, head, head->next);
+}
+
+/**
+ * list_add_tail - add a new entry
+ * @new: new entry to be added
+ * @head: list head to add it before
+ *
+ * Insert a new entry before the specified head.
+ * This is useful for implementing queues.
+ */
+static __inline__ void list_add_tail(struct list_head *new, struct list_head *head)
+{
+	__list_add(new, head->prev, head);
+}
+
+/*
+ * Delete a list entry by making the prev/next entries
+ * point to each other.
+ *
+ * This is only for internal list manipulation where we know
+ * the prev/next entries already!
+ */
+static __inline__ void __list_del(struct list_head * prev,
+				  struct list_head * next)
+{
+	next->prev = prev;
+	prev->next = next;
+}
+
+/**
+ * list_del - deletes entry from list.
+ * @entry: the element to delete from the list.
+ * Note: list_empty on entry does not return true after this, the entry is in an undefined state.
+ */
+static __inline__ void list_del(struct list_head *entry)
+{
+	__list_del(entry->prev, entry->next);
+}
+
+/**
+ * list_del_init - deletes entry from list and reinitialize it.
+ * @entry: the element to delete from the list.
+ */
+static __inline__ void list_del_init(struct list_head *entry)
+{
+	__list_del(entry->prev, entry->next);
+	INIT_LIST_HEAD(entry); 
+}
+
+/**
+ * list_empty - tests whether a list is empty
+ * @head: the list to test.
+ */
+static __inline__ int list_empty(struct list_head *head)
+{
+	return head->next == head;
+}
+
+/**
+ * list_splice - join two lists
+ * @list: the new list to add.
+ * @head: the place to add it in the first list.
+ */
+static __inline__ void list_splice(struct list_head *list, struct list_head *head)
+{
+	struct list_head *first = list->next;
+
+	if (first != list) {
+		struct list_head *last = list->prev;
+		struct list_head *at = head->next;
+
+		first->prev = head;
+		head->next = first;
+
+		last->next = at;
+		at->prev = last;
+	}
+}
+
+/**
+ * list_entry - get the struct for this entry
+ * @ptr:	the &struct list_head pointer.
+ * @type:	the type of the struct this is embedded in.
+ * @member:	the name of the list_struct within the struct.
+ */
+#define list_entry(ptr, type, member) \
+	((type *)((char *)(ptr)-(unsigned long)(&((type *)0)->member)))
+
+/**
+ * list_for_each	-	iterate over a list
+ * @pos:	the &struct list_head to use as a loop counter.
+ * @head:	the head for your list.
+ */
+#define list_for_each(pos, head) \
+	for (pos = (head)->next; pos != (head); pos = pos->next)
+        	
+/**
+ * list_for_each_safe	-	iterate over a list safe against removal of list entry
+ * @pos:	the &struct list_head to use as a loop counter.
+ * @n:		another &struct list_head to use as temporary storage
+ * @head:	the head for your list.
+ */
+#define list_for_each_safe(pos, n, head) \
+	for (pos = (head)->next, n = pos->next; pos != (head); \
+		pos = n, n = pos->next)
+
+/**
+ * list_for_each_prev	-	iterate over a list in reverse order
+ * @pos:	the &struct list_head to use as a loop counter.
+ * @head:	the head for your list.
+ */
+#define list_for_each_prev(pos, head) \
+	for (pos = (head)->prev; pos != (head); pos = pos->prev)
+
+#endif /* _LIST_H_ */
diff --git a/parseconfig.c b/parseconfig.c
new file mode 100644
index 0000000..6c0427d
--- /dev/null
+++ b/parseconfig.c
@@ -0,0 +1,899 @@
+/*
+ * config file parser
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+
+#include <sys/stat.h>
+#include <sys/types.h>
+
+#include "list.h"
+#include "parseconfig.h"
+
+struct cfg_entry {
+    struct list_head  next;
+    char              *name;
+    unsigned int      flags;
+    char              *value;
+};
+
+struct cfg_section {
+    struct list_head  next;
+    char              *name;
+    unsigned int      flags;
+    struct list_head  entries;
+};
+
+struct cfg_domain {
+    struct list_head  next;
+    char              *name;
+    struct list_head  sections;
+};
+
+LIST_HEAD(domains);
+
+/* ------------------------------------------------------------------------ */
+/* internal stuff                                                           */
+
+static struct cfg_domain  *d_last;
+static struct cfg_section *s_last;
+static struct cfg_entry   *e_last;
+
+static struct cfg_domain*
+cfg_find_domain(char *dname)
+{
+    struct list_head *item;
+    struct cfg_domain *domain;
+
+    if (d_last && 0 == strcmp(d_last->name,dname))
+	return d_last;
+    d_last = NULL;
+    s_last = NULL;
+    e_last = NULL;
+
+    list_for_each(item,&domains) {
+	domain = list_entry(item, struct cfg_domain, next);
+	if (0 == strcasecmp(domain->name,dname)) {
+	    d_last = domain;
+	    return domain;
+	}
+    }
+    return NULL;
+}
+
+static struct cfg_domain*
+cfg_get_domain(char *dname)
+{
+    struct cfg_domain *domain;
+
+    domain = cfg_find_domain(dname);
+    if (NULL == domain) {
+	domain = malloc(sizeof(*domain));
+	memset(domain,0,sizeof(*domain));
+	domain->name = strdup(dname);
+	INIT_LIST_HEAD(&domain->sections);
+	list_add_tail(&domain->next,&domains);
+    }
+    d_last = domain;
+    return domain;
+}
+
+static struct cfg_section*
+cfg_find_section(struct cfg_domain *domain, char *sname)
+{
+    struct list_head *item;
+    struct cfg_section *section;
+
+    if (s_last && 0 == strcmp(s_last->name,sname))
+	return s_last;
+    s_last = NULL;
+    e_last = NULL;
+
+    list_for_each(item,&domain->sections) {
+	section = list_entry(item, struct cfg_section, next);
+	if (0 == strcasecmp(section->name,sname)) {
+	    s_last = section;
+	    return section;
+	}
+    }
+    return NULL;
+}
+
+static struct cfg_section*
+cfg_get_section(struct cfg_domain *domain, char *sname)
+{
+    struct cfg_section *section;
+
+    section = cfg_find_section(domain,sname);
+    if (NULL == section) {
+	section = malloc(sizeof(*section));
+	memset(section,0,sizeof(*section));
+	section->name = strdup(sname);
+	INIT_LIST_HEAD(&section->entries);
+	list_add_tail(&section->next,&domain->sections);
+    }
+    s_last = section;
+    return section;
+}
+
+static struct cfg_entry*
+cfg_find_entry(struct cfg_section *section, char *ename)
+{
+    struct list_head *item;
+    struct cfg_entry *entry;
+
+    if (e_last && 0 == strcmp(e_last->name,ename))
+	return e_last;
+    e_last = NULL;
+
+    list_for_each(item,&section->entries) {
+	entry = list_entry(item, struct cfg_entry, next);
+	if (0 == strcasecmp(entry->name,ename)) {
+	    e_last = entry;
+	    return entry;
+	}
+    }
+    return NULL;
+}
+
+static struct cfg_entry*
+cfg_get_entry(struct cfg_section *section, char *ename)
+{
+    struct cfg_entry *entry;
+
+    entry = cfg_find_entry(section,ename);
+    if (NULL == entry) {
+	entry = malloc(sizeof(*entry));
+	memset(entry,0,sizeof(*entry));
+	entry->name = strdup(ename);
+	list_add_tail(&entry->next,&section->entries);
+    }
+    e_last = entry;
+    return entry;
+}
+
+static void
+cfg_set_entry(struct cfg_section *section, char *name, const char *value)
+{
+    struct cfg_entry *entry;
+    
+    entry = cfg_get_entry(section,name);
+    if (entry->value)
+	free(entry->value);
+    entry->value = strdup(value);
+}
+
+static struct cfg_section*
+cfg_get_sec(char *dname, char *sname)
+{
+    struct cfg_domain  *domain;
+
+    domain = cfg_find_domain(dname);
+    if (NULL == domain)
+	return NULL;
+    return cfg_find_section(domain,sname);
+}
+
+static struct cfg_entry*
+cfg_get_ent(char *dname, char *sname, char *ename)
+{
+    struct cfg_section *section;
+
+    section = cfg_get_sec(dname,sname);
+    if (NULL == section)
+	return NULL;
+    return cfg_find_entry(section,ename);
+}
+
+/* ------------------------------------------------------------------------ */
+/* import / add / del config data                                           */
+
+int
+cfg_parse_file(char *dname, char *filename)
+{
+    struct cfg_domain  *domain  = NULL;
+    struct cfg_section *section = NULL;
+    char line[256],tag[64],value[192];
+    FILE *fp;
+    int nr;
+    
+    if (NULL == (fp = fopen(filename,"r")))
+	return -1;
+
+    nr = 0;
+    domain = cfg_get_domain(dname);
+    while (NULL != fgets(line,255,fp)) {
+	nr++;
+	if (1 == sscanf(line,"# include \"%[^\"]\"",value)) {
+	    /* includes */
+	    char *h,*inc;
+	    inc = malloc(strlen(filename)+strlen(value));
+	    strcpy(inc,filename);
+	    h = strrchr(inc,'/');
+	    if (h)
+		h++;
+	    else
+		h = inc;
+	    strcpy(h,value);
+	    cfg_parse_file(dname,inc);
+	    free(inc);
+	    continue;
+	}
+	if (line[0] == '\n' || line[0] == '#' || line[0] == '%')
+	    continue;
+	if (1 == sscanf(line,"[%99[^]]]",value)) {
+	    /* [section] */
+	    section = cfg_get_section(domain,value);
+	} else if (2 == sscanf(line," %63[^= ] = %191[^\n]",tag,value)) {
+	    /* foo = bar */
+	    if (NULL == section) {
+		fprintf(stderr,"%s:%d: error: no section\n",filename,nr);
+	    } else {
+		char *c = value + strlen(value)-1;
+		while (c > value  &&  (*c == ' ' || *c == '\t'))
+		    *(c--) = 0;
+		cfg_set_entry(section,tag,value);
+	    }
+	} else {
+	    /* Huh ? */
+	    fprintf(stderr,"%s:%d: syntax error\n",filename,nr);
+	}
+    }
+    fclose(fp);
+    return 0;
+}
+
+void
+cfg_set_str(char *dname, char *sname, char *ename, const char *value)
+{
+    struct cfg_domain  *domain  = NULL;
+    struct cfg_section *section = NULL;
+
+    if (NULL == value) {
+	cfg_del_entry(dname, sname, ename);
+    } else {
+	domain  = cfg_get_domain(dname);
+	section = cfg_get_section(domain,sname);
+	cfg_set_entry(section,ename,value);
+    }
+}
+
+void
+cfg_set_int(char *dname, char *sname, char *ename, int value)
+{
+    char str[32];
+
+    snprintf(str,sizeof(str),"%d",value);
+    cfg_set_str(dname,sname,ename,str);
+}
+
+void
+cfg_set_bool(char *dname, char *sname, char *ename, int value)
+{
+    cfg_set_str(dname,sname,ename, value ? "true" : "false");
+}
+
+void
+cfg_del_section(char *dname, char *sname)
+{
+    struct cfg_section  *section;
+    struct cfg_entry    *entry;
+
+    section= cfg_get_sec(dname,sname);
+    if (!section)
+	return;
+    list_del(&section->next);
+    while (!list_empty(&section->entries)) {
+	entry = list_entry(section->entries.next, struct cfg_entry, next);
+	list_del(&entry->next);
+	free(entry->name);
+	free(entry->value);
+	free(entry);
+    }
+    s_last = NULL;
+    e_last = NULL;
+    free(section->name);
+    free(section);
+}
+
+void
+cfg_del_entry(char *dname, char *sname, char *ename)
+{
+    struct cfg_entry *entry;
+
+    entry = cfg_get_ent(dname,sname,ename);
+    if (!entry)
+	return;
+    e_last = NULL;
+    list_del(&entry->next);
+    free(entry->name);
+    free(entry->value);
+    free(entry);
+}
+
+void
+cfg_parse_cmdline(int *argc, char **argv, struct cfg_cmdline *opt)
+{
+    int i,j,o,shift,len;
+    char sopt,*lopt;
+
+    for (i = 1; i < *argc;) {
+	if (argv[i][0] != '-') {
+	    i++;
+	    continue;
+	}
+	if (argv[i][1] == 0) {
+	    i++;
+	    continue;
+	}
+
+	sopt = 0;
+	lopt = NULL;
+	if (argv[i][1] != '-' &&
+	    argv[i][2] == 0) {
+	    /* short option: -f */
+	    sopt = argv[i][1];
+	}
+	if (argv[i][1] != '-') {
+	    /* long option: -foo */
+	    lopt = argv[i]+1;
+	} else {
+	    /* also accept gnu-style: --foo */
+	    lopt = argv[i]+2;
+	}
+	
+	for (shift = 0, o = 0;
+	     0 == shift && opt[o].cmdline != NULL;
+	     o++) {
+	    len = strlen(opt[o].cmdline);
+
+	    if (opt[o].yesno && sopt && sopt == opt[o].letter) {
+		/* yesno: -f */
+		cfg_set_bool(opt[o].option.domain,
+			     opt[o].option.section,
+			     opt[o].option.entry,
+			     1);
+		shift = 1;
+
+	    } else if (opt[o].needsarg && sopt && sopt == opt[o].letter &&
+		       i+1 < *argc) {
+		/* arg: -f bar */
+		cfg_set_str(opt[o].option.domain,
+			    opt[o].option.section,
+			    opt[o].option.entry,
+			    argv[i+1]);
+		shift = 2;
+		
+	    } else if (opt[o].value && sopt && sopt == opt[o].letter) {
+		/* -f sets fixed value */
+		cfg_set_str(opt[o].option.domain,
+			    opt[o].option.section,
+			    opt[o].option.entry,
+			    opt[o].value);
+		shift = 1;
+
+	    } else if (opt[o].yesno && lopt && 
+		       0 == strcmp(lopt,opt[o].cmdline)) {
+		/* yesno: -foo */
+		cfg_set_bool(opt[o].option.domain,
+			     opt[o].option.section,
+			     opt[o].option.entry,
+			     1);
+		shift = 1;
+
+	    } else if (opt[o].yesno && lopt && 
+		       0 == strncmp(lopt,"no",2) &&
+		       0 == strcmp(lopt+2,opt[o].cmdline)) {
+		/* yesno: -nofoo */
+		cfg_set_bool(opt[o].option.domain,
+			     opt[o].option.section,
+			     opt[o].option.entry,
+			     0);
+		shift = 1;
+
+	    } else if (opt[o].needsarg && lopt && 
+		       0 == strcmp(lopt,opt[o].cmdline) &&
+		       i+1 < *argc) {
+		/* arg: -foo bar */
+		cfg_set_str(opt[o].option.domain,
+			    opt[o].option.section,
+			    opt[o].option.entry,
+			    argv[i+1]);
+		shift = 2;
+
+	    } else if (opt[o].needsarg && lopt && 
+		       0 == strncmp(lopt,opt[o].cmdline,len) &&
+		       0 == strncmp(lopt+len,"=",1)) {
+		/* arg: -foo=bar */
+		cfg_set_str(opt[o].option.domain,
+			    opt[o].option.section,
+			    opt[o].option.entry,
+			    argv[i]+2+len);
+		shift = 1;
+
+	    } else if (opt[o].value && lopt &&
+		       0 == strcmp(lopt,opt[o].cmdline)) {
+		/* -foo sets some fixed value */
+		cfg_set_str(opt[o].option.domain,
+			    opt[o].option.section,
+			    opt[o].option.entry,
+			    opt[o].value);
+		shift = 1;
+	    }
+	}
+
+	if (shift) {
+	    /* remove processed args */
+	    for (j = i; j < *argc+1-shift; j++)
+		argv[j] = argv[j+shift];
+	    (*argc) -= shift;
+	} else
+	    i++;
+    }
+}
+
+void
+cfg_help_cmdline(FILE *fp, struct cfg_cmdline *opt, int w1, int w2, int w3)
+{
+    char *val;
+    int o,len;
+    
+    for (o = 0; opt[o].cmdline != NULL; o++) {
+	fprintf(fp,"%*s",w1,"");
+	if (opt[o].letter) {
+	    fprintf(fp,"-%c  ",opt[o].letter);
+	} else {
+	    fprintf(fp,"    ");
+	}
+
+	if (opt[o].yesno) {
+	    len = fprintf(fp,"-(no)%s ",opt[o].cmdline);
+	} else if (opt[o].needsarg) {
+	    len = fprintf(fp,"-%s <arg> ",opt[o].cmdline);
+	} else {
+	    len = fprintf(fp,"-%s ",opt[o].cmdline);
+	}
+	if (len < w2)
+	    fprintf(fp,"%*s",w2-len,"");
+
+	len = fprintf(fp,"%s ",opt[o].desc);
+
+	if (w3) {
+	    if (len < w3)
+		fprintf(fp,"%*s",w3-len,"");
+	    val = cfg_get_str(opt[o].option.domain,
+			      opt[o].option.section,
+			      opt[o].option.entry);
+	    if (val)
+		fprintf(fp,"[%s]",val);
+	}
+ 	fprintf(fp,"\n");
+    }
+}
+
+/* ------------------------------------------------------------------------ */
+/* export config data                                                       */
+
+static int cfg_mkdir(char *filename)
+{
+    char *h;
+    int rc;
+
+    h = strrchr(filename,'/');
+    if (!h  ||  h == filename)
+	return -1;
+    *h = '\0';
+    rc = mkdir(filename,0777);
+    if (-1 == rc && ENOENT == errno) {
+	cfg_mkdir(filename);
+	rc = mkdir(filename,0777);
+    }
+    if (-1 == rc)
+	fprintf(stderr,"mkdir(%s): %s\n",filename,strerror(errno));
+    *h = '/';
+    return rc;
+}
+
+int
+cfg_write_file(char *dname, char *filename)
+{
+    struct list_head   *item1,*item2;
+    struct cfg_domain  *domain;
+    struct cfg_section *section;
+    struct cfg_entry   *entry;
+    char *bfile, *tfile;
+    int len;
+    FILE *fp;
+
+    len = strlen(filename)+10;
+    bfile = malloc(len);
+    tfile = malloc(len);
+    sprintf(bfile,"%s~",filename);
+    sprintf(tfile,"%s.$$$",filename);
+
+    fp = fopen(tfile,"w");
+    if (NULL == fp  &&  ENOENT == errno) {
+	cfg_mkdir(tfile);
+	fp = fopen(tfile,"w");
+    }
+    if (NULL == fp) {
+	fprintf(stderr,"open(%s): %s\n",tfile,strerror(errno));
+	return -1;
+    }
+
+    domain = cfg_find_domain(dname);
+    if (NULL != domain) {
+	list_for_each(item1,&domain->sections) {
+	    section = list_entry(item1, struct cfg_section, next);
+	    fprintf(fp,"[%s]\n",section->name);
+	    list_for_each(item2,&section->entries) {
+		entry = list_entry(item2, struct cfg_entry, next);
+		fprintf(fp,"%s = %s\n",entry->name,entry->value);
+	    }
+	    fprintf(fp,"\n");
+	}
+    }
+    fclose(fp);
+
+    if (-1 == unlink(bfile) && ENOENT != errno) {
+	fprintf(stderr,"unlink(%s): %s\n",bfile,strerror(errno));
+	return -1;
+    }
+    if (-1 == rename(filename,bfile) && ENOENT != errno) {
+	fprintf(stderr,"rename(%s,%s): %s\n",filename,bfile,strerror(errno));
+	return -1;
+    }
+    if (-1 == rename(tfile,filename)) {
+	fprintf(stderr,"rename(%s,%s): %s\n",tfile,filename,strerror(errno));
+	return -1;
+    }
+    return 0;
+}
+
+/* ------------------------------------------------------------------------ */
+/* list / search config data                                                */
+
+char*
+cfg_sections_first(char *dname)
+{
+    struct list_head   *item;
+    struct cfg_domain  *domain;
+    struct cfg_section *section;
+
+    domain = cfg_find_domain(dname);
+    if (NULL == domain)
+	return NULL;
+    
+    item = &domain->sections;
+    if (item->next == &domain->sections)
+	return NULL;
+    section = list_entry(item->next, struct cfg_section, next);
+    s_last  = section;
+    e_last  = NULL;
+    return section->name;
+}
+
+char*
+cfg_sections_next(char *dname, char *current)
+{
+    struct list_head   *item;
+    struct cfg_domain  *domain;
+    struct cfg_section *section;
+
+    domain = cfg_find_domain(dname);
+    if (NULL == domain)
+	return NULL;
+    section = cfg_find_section(domain,current);
+    if (NULL == section)
+	return NULL;
+    item = &section->next;
+
+    if (item->next == &domain->sections)
+	return NULL;
+    section = list_entry(item->next, struct cfg_section, next);
+    s_last  = section;
+    e_last  = NULL;
+    return section->name;
+}
+
+char*
+cfg_sections_prev(char *dname, char *current)
+{
+    struct list_head   *item;
+    struct cfg_domain  *domain;
+    struct cfg_section *section;
+
+    domain = cfg_find_domain(dname);
+    if (NULL == domain)
+	return NULL;
+    section = cfg_find_section(domain,current);
+    if (NULL == section)
+	return NULL;
+    item = &section->next;
+    
+    if (item->prev == &domain->sections)
+	return NULL;
+    section = list_entry(item->prev, struct cfg_section, next);
+    s_last  = section;
+    e_last  = NULL;
+    return section->name;
+}
+
+unsigned int cfg_sections_count(char *dname)
+{
+    struct list_head   *item;
+    struct cfg_domain  *domain;
+    int count = 0;
+
+    domain = cfg_find_domain(dname);
+    if (NULL != domain)
+	list_for_each(item,&domain->sections)
+	    count++;
+    return count;
+}
+
+char* cfg_sections_index(char *dname, int i)
+{
+    struct list_head   *item;
+    struct cfg_domain  *domain;
+    struct cfg_section *section;
+    int count = 0;
+
+    domain = cfg_find_domain(dname);
+    if (NULL == domain)
+	return NULL;
+
+    list_for_each(item,&domain->sections) {
+	if (i == count) {
+	    section = list_entry(item, struct cfg_section, next);
+	    s_last  = section;
+	    e_last  = NULL;
+	    return section->name;
+	}
+	count++;
+    }
+    return NULL;
+}
+
+char*
+cfg_entries_first(char *dname, char *sname)
+{
+    struct list_head   *item;
+    struct cfg_section *section;
+    struct cfg_entry   *entry;
+
+    section = cfg_get_sec(dname,sname);
+    if (NULL == section)
+	return NULL;
+    
+    item = &section->entries;
+    if (item->next == &section->entries)
+	return NULL;
+    entry  = list_entry(item->next, struct cfg_entry, next);
+    e_last = entry;
+    return entry->name;
+}
+
+char*
+cfg_entries_next(char *dname, char *sname, char *current)
+{
+    struct list_head   *item;
+    struct cfg_section *section;
+    struct cfg_entry   *entry;
+
+    section = cfg_get_sec(dname,sname);
+    if (NULL == section)
+	return NULL;
+    entry = cfg_find_entry(section,current);
+    if (NULL == entry)
+	return NULL;
+    item = &entry->next;
+
+    if (item->next == &section->entries)
+	return NULL;
+    entry  = list_entry(item->next, struct cfg_entry, next);
+    e_last = entry;
+    return entry->name;
+}
+
+char*
+cfg_entries_prev(char *dname, char *sname, char *current)
+{
+    struct list_head   *item;
+    struct cfg_section *section;
+    struct cfg_entry   *entry;
+
+    section = cfg_get_sec(dname,sname);
+    if (NULL == section)
+	return NULL;
+    entry = cfg_find_entry(section,current);
+    if (NULL == entry)
+	return NULL;
+    item = &entry->next;
+
+    if (item->prev == &section->entries)
+	return NULL;
+    entry  = list_entry(item->prev, struct cfg_entry, next);
+    e_last = entry;
+    return entry->name;
+}
+
+unsigned int cfg_entries_count(char *dname, char *sname)
+{
+    struct list_head   *item;
+    struct cfg_section *section;
+    int count = 0;
+
+    section = cfg_get_sec(dname,sname);
+    if (NULL != section)
+	list_for_each(item,&section->entries)
+	    count++;
+    return count;
+}
+
+char* cfg_entries_index(char *dname, char *sname, int i)
+{
+    struct list_head   *item;
+    struct cfg_section *section;
+    struct cfg_entry   *entry;
+    int count = 0;
+
+    section = cfg_get_sec(dname,sname);
+    if (NULL == section)
+	return NULL;
+    
+    list_for_each(item,&section->entries) {
+	if (i == count) {
+	    entry  = list_entry(item, struct cfg_entry, next);
+	    e_last = entry;
+	    return entry->name;
+	}
+	count++;
+    }
+    return NULL;
+}
+
+char* cfg_search(char *dname, char *sname, char *ename, char *value)
+{
+    struct list_head   *item1,*item2;
+    struct cfg_domain  *domain;
+    struct cfg_section *section;
+    struct cfg_entry   *entry;
+
+    domain = cfg_find_domain(dname);
+    if (NULL == domain)
+	return NULL;
+    list_for_each(item1,&domain->sections) {
+	section = list_entry(item1, struct cfg_section, next);
+	if (sname && 0 != strcasecmp(section->name,sname))
+	    continue;
+	if (!ename)
+	    return section->name;
+	list_for_each(item2,&section->entries) {
+	    entry = list_entry(item2, struct cfg_entry, next);
+	    if (0 != strcasecmp(entry->name,ename))
+		continue;
+	    if (0 == strcasecmp(entry->value,value))
+		return section->name;
+	}
+    }
+    return NULL;
+}
+
+/* ------------------------------------------------------------------------ */
+/* get config data                                                          */
+
+char*
+cfg_get_str(char *dname, char *sname, char *ename)
+{
+    struct cfg_entry   *entry;
+
+    entry = cfg_get_ent(dname, sname, ename);
+    if (NULL == entry)
+	return NULL;
+    return entry->value;
+}
+
+unsigned int
+cfg_get_int(char *dname, char *sname, char *ename, unsigned int def)
+{
+    char *val;
+
+    val = cfg_get_str(dname,sname,ename);
+    if (NULL == val)
+	return def;
+    return atoi(val);
+}
+
+signed int
+cfg_get_signed_int(char *dname, char *sname, char *ename, signed int def)
+{
+    char *val;
+
+    val = cfg_get_str(dname,sname,ename);
+    if (NULL == val)
+	return def;
+    return atoi(val);
+}
+
+float
+cfg_get_float(char *dname, char *sname, char *ename, float def)
+{
+    char *val;
+
+    val = cfg_get_str(dname,sname,ename);
+    if (NULL == val)
+	return def;
+    return atof(val);
+}
+
+int
+cfg_get_bool(char *dname, char *sname, char *ename, int def)
+{
+    static char *yes[] = { "true",  "yes", "on",  "1" };
+    char *val;
+    int i;
+    int retval = 0;
+
+    val = cfg_get_str(dname,sname,ename);
+    if (NULL == val)
+	return def;
+    for (i = 0; i < sizeof(yes)/sizeof(yes[0]); i++)
+	if (0 == strcasecmp(val,yes[i]))
+	    retval = 1;
+    return retval;
+}
+
+/* ------------------------------------------------------------------------ */
+/* get/set flags                                                            */
+
+unsigned int cfg_get_sflags(char *dname, char *sname)
+{
+    struct cfg_section *section;
+
+    section = cfg_get_sec(dname, sname);
+    if (NULL == section)
+	return 0;
+    return section->flags;
+}
+
+unsigned int cfg_get_eflags(char *dname, char *sname, char *ename)
+{
+    struct cfg_entry   *entry;
+
+    entry = cfg_get_ent(dname, sname, ename);
+    if (NULL == entry)
+	return 0;
+    return entry->flags;
+}
+
+unsigned int cfg_set_sflags(char *dname, char *sname,
+			    unsigned int mask, unsigned int bits)
+{
+    struct cfg_section *section;
+
+    section = cfg_get_sec(dname, sname);
+    if (NULL == section)
+	return 0;
+    section->flags &= ~mask;
+    section->flags |= bits;
+    return section->flags;
+}
+
+unsigned int cfg_set_eflags(char *dname, char *sname, char *ename,
+			    unsigned int mask, unsigned int bits)
+{
+    struct cfg_entry   *entry;
+
+    entry = cfg_get_ent(dname, sname, ename);
+    if (NULL == entry)
+	return 0;
+    entry->flags &= ~mask;
+    entry->flags |= bits;
+    return entry->flags;
+}
diff --git a/parseconfig.h b/parseconfig.h
new file mode 100644
index 0000000..da87571
--- /dev/null
+++ b/parseconfig.h
@@ -0,0 +1,65 @@
+/* config options */
+struct cfg_option {
+    char *domain;
+    char *section;
+    char *entry;
+};    
+struct cfg_cmdline {
+    char               letter;
+    char               *cmdline;
+    struct cfg_option  option;
+    char               *value;
+    char               *desc;
+    int                needsarg:1;
+    int                yesno:1;
+};
+void   cfg_parse_cmdline(int *argc, char **argv, struct cfg_cmdline *opt);
+void   cfg_help_cmdline(FILE *fp, struct cfg_cmdline *opt, int w1, int w2, int w3);
+
+/* file I/O */
+int    cfg_parse_file(char *dname, char *filename);
+int    cfg_write_file(char *dname, char *filename);
+
+/* update */
+void   cfg_set_str(char *dname, char *sname, char *ename,
+		   const char *value);
+void   cfg_set_int(char *dname, char *sname, char *ename, int value);
+void   cfg_set_bool(char *dname, char *sname, char *ename, int value);
+
+void   cfg_del_section(char *dname, char *sname);
+void   cfg_del_entry(char *dname, char *sname, char *ename);
+
+/* search */
+char*  cfg_sections_first(char *dname);
+char*  cfg_sections_next(char *dname, char *current);
+char*  cfg_sections_prev(char *dname, char *current);
+char*  cfg_sections_index(char *dname, int i);
+unsigned int cfg_sections_count(char *dname);
+
+char*  cfg_entries_first(char *dname, char *sname);
+char*  cfg_entries_next(char *dname, char *sname, char *current);
+char*  cfg_entries_prev(char *dname, char *sname, char *current);
+char*  cfg_entries_index(char *dname, char *sname, int i);
+unsigned int cfg_entries_count(char *dname, char *sname);
+
+#define cfg_sections_for_each(dname, item) \
+	for (item = cfg_sections_first(dname); NULL != item; \
+	     item = cfg_sections_next(dname,item))
+
+char*  cfg_search(char *dname, char *sname, char *ename, char *value);
+
+/* read */
+char*  cfg_get_str(char *dname, char *sname, char *ename);
+unsigned int cfg_get_int(char *dname, char *sname,
+			 char *ename, unsigned int def);
+signed int  cfg_get_signed_int(char *dname, char *sname,
+			       char *ename, signed int def);
+float  cfg_get_float(char *dname, char *sname, char *ename, float def);
+int    cfg_get_bool(char *dname, char *sname, char *ename, int def);
+
+unsigned int    cfg_get_sflags(char *dname, char *sname);
+unsigned int    cfg_get_eflags(char *dname, char *sname, char *ename);
+unsigned int    cfg_set_sflags(char *dname, char *sname,
+			       unsigned int mask, unsigned int bits);
+unsigned int    cfg_set_eflags(char *dname, char *sname, char *ename,
+			       unsigned int mask, unsigned int bits);