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/* $Id: conffile.c 6733 2004-05-16 23:01:23Z rra $
**
** Routines for reading in incoming.conf-style config files.
*/
#include "config.h"
#include "clibrary.h"
#include "conffile.h"
#include "libinn.h"
static int getconfline(CONFFILE *F, char *buffer, int length) {
if (F->f) {
fgets(buffer, length, F->f);
if (ferror(F->f)) {
return 1;
}
} else if (F->array) {
strlcpy(buffer, F->array[F->lineno], F->sbuf);
}
F->lineno++;
if (strlen (F->buf) >= F->sbuf - 1) {
return 1; /* Line too long */
} else {
return 0;
}
}
static int cfeof(CONFFILE *F) {
if (F->f) {
return feof(F->f);
} else if (F->array) {
return (F->lineno == F->array_len);
} else {
return 1;
}
}
static char *CONFgetword(CONFFILE *F)
{
char *p;
char *s;
char *t;
char *word;
bool flag, comment;
if (!F) return (NULL); /* No conf file */
if (!F->buf || !F->buf[0]) {
if (cfeof (F)) return (NULL);
if (!F->buf) {
F->sbuf = BIG_BUFFER;
F->buf = xmalloc(F->sbuf);
}
if (getconfline(F, F->buf, F->sbuf) != 0)
return (NULL); /* Line too long */
}
do {
/* Ignore blank and comment lines. */
if ((p = strchr(F->buf, '\n')) != NULL)
*p = '\0';
for (p = F->buf; *p == ' ' || *p == '\t' ; p++);
flag = true;
if ((*p == '\0' || *p == '#') && !cfeof(F)) {
flag = false;
if (getconfline(F, F->buf, F->sbuf))
return (NULL); /* Line too long */
continue;
}
break;
} while (!cfeof(F) || !flag);
comment = false;
if (*p == '"') { /* double quoted string ? */
p++;
do {
for (t = p; (*t != '"' || (*t == '"' && *(t - 1) == '\\')) &&
*t != '\0'; t++);
if (*t == '\0') {
if (strlen(F->buf) >= F->sbuf - 2)
return (NULL); /* Line too long */
*t++ = '\n';
*t = '\0';
if (getconfline(F, t, F->sbuf - strlen(F->buf)))
return (NULL); /* Line too long */
if ((s = strchr(t, '\n')) != NULL)
*s = '\0';
}
else
break;
} while (!cfeof(F));
if (*t != '"')
return (NULL);
*t++ = '\0';
}
else {
for (t = p; *t != ' ' && *t != '\t' && *t != '\0'; t++)
if (*t == '#' && (t == p || *(t - 1) != '\\')) {
comment = true;
break;
}
if (*t != '\0')
*t++ = '\0';
}
if (*p == '\0' && cfeof(F)) return (NULL);
word = xstrdup (p);
p = F->buf;
if (!comment)
for (; *t != '\0'; t++)
*p++ = *t;
*p = '\0';
return (word);
}
CONFFILE *CONFfopen(char *filename)
{
FILE *f;
CONFFILE *ret;
f = fopen(filename, "r");
if (!f)
return(0);
ret = xmalloc(sizeof(CONFFILE));
if (!ret) {
fclose(f);
return(0);
}
ret->filename = xstrdup(filename);
ret->buf = 0;
ret->sbuf = 0;
ret->lineno = 0;
ret->f = f;
ret->array = NULL;
return(ret);
}
void CONFfclose(CONFFILE *f)
{
if (!f) return; /* No conf file */
fclose(f->f);
if (f->buf)
free(f->buf);
if (f->filename)
free(f->filename);
free(f);
}
CONFTOKEN *CONFgettoken(CONFTOKEN *toklist, CONFFILE *file)
{
char *word;
static CONFTOKEN ret = {CONFstring, 0};
int i;
if (ret.name) {
free(ret.name);
ret.name = 0;
}
word = CONFgetword(file);
if (!word)
return(0);
if (toklist) {
for (i = 0; toklist[i].type; i++) {
if (strcmp(word, toklist[i].name) == 0) {
free(word);
return(&toklist[i]);
}
}
}
ret.name = word;
return(&ret);
}
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