moved genericconfig to gconfig.c and reorganised header files

git-svn-id: https://svn.testnett.uninett.no/radsecproxy/trunk@197 e88ac4ed-0b26-0410-9574-a7f39faa03bf

1 files changed, 191 insertions, 0 deletions

diff --git a/gconfig.c b/gconfig.c
new file mode 100644
index 0000000..8040190
--- /dev/null
+++ b/gconfig.c
@@ -0,0 +1,191 @@
+/*
+ * Copyright (C) 2007 Stig Venaas <venaas@uninett.no>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ */
+
+#include <string.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include "debug.h"
+#include "util.h"
+#include "gconfig.h"
+
+/* returns NULL on error, where to continue parsing if token and ok. E.g. "" will return token with empty string */
+char *strtokenquote(char *s, char **token, char *del, char *quote, char *comment) {
+    char *t = s, *q, *r;
+
+    if (!t || !token || !del)
+	return NULL;
+    while (*t && strchr(del, *t))
+	t++;
+    if (!*t || (comment && strchr(comment, *t))) {
+	*token = NULL;
+	return t + 1; /* needs to be non-NULL, but value doesn't matter */
+    }
+    if (quote && (q = strchr(quote, *t))) {
+	t++;
+	r = t;
+	while (*t && *t != *q)
+	    t++;
+	if (!*t || (t[1] && !strchr(del, t[1])))
+	    return NULL;
+	*t = '\0';
+	*token = r;
+	return t + 1;
+    }
+    *token = t;
+    t++;
+    while (*t && !strchr(del, *t))
+	t++;
+    *t = '\0';
+    return t + 1;
+}
+
+/* Parses config with following syntax:
+ * One of these:
+ * option-name value
+ * option-name = value
+ * Or:
+ * option-name value {
+ *     option-name [=] value
+ *     ...
+ * }
+ */
+void getgenericconfig(FILE *f, char *block, ...) {
+    va_list ap;
+    char line[1024];
+    /* initialise lots of stuff to avoid stupid compiler warnings */
+    char *tokens[3], *s, *opt = NULL, *val = NULL, *word, *optval, **str = NULL, ***mstr = NULL;
+    int type = 0, tcount, conftype = 0, n;
+    void (*cbk)(FILE *, char *, char *, char *) = NULL;
+	
+    while (fgets(line, 1024, f)) {
+	s = line;
+	for (tcount = 0; tcount < 3; tcount++) {
+	    s = strtokenquote(s, &tokens[tcount], " \t\r\n", "\"'", tcount ? NULL : "#");
+	    if (!s)
+		debugx(1, DBG_ERR, "Syntax error in line starting with: %s", line);
+	    if (!tokens[tcount])
+		break;
+	}
+	if (!tcount || **tokens == '#')
+	    continue;
+
+	if (**tokens == '}') {
+	    if (block)
+		return;
+	    debugx(1, DBG_ERR, "configuration error, found } with no matching {");
+	}
+
+	switch (tcount) {
+	case 2:
+	    opt = tokens[0];
+	    val = tokens[1];
+	    conftype = CONF_STR;
+	    break;
+	case 3:
+	    if (tokens[1][0] == '=' && tokens[1][1] == '\0') {
+		opt = tokens[0];
+		val = tokens[2];
+		conftype = CONF_STR;
+		break;
+	    }
+	    if (tokens[2][0] == '{' && tokens[2][1] == '\0') {
+		opt = tokens[0];
+		val = tokens[1];
+		conftype = CONF_CBK;
+		break;
+	    }
+	    /* fall through */
+	default:
+	    if (block)
+		debugx(1, DBG_ERR, "configuration error in block %s, line starting with %s", block, tokens[0]);
+	    debugx(1, DBG_ERR, "configuration error, syntax error in line starting with %s", tokens[0]);
+	}
+
+	if (!*val)
+	    debugx(1, DBG_ERR, "configuration error, option %s needs a non-empty value", opt);
+	
+	va_start(ap, block);
+	while ((word = va_arg(ap, char *))) {
+	    type = va_arg(ap, int);
+	    switch (type) {
+	    case CONF_STR:
+		str = va_arg(ap, char **);
+		if (!str)
+		    debugx(1, DBG_ERR, "getgeneralconfig: internal parameter error");
+		break;
+	    case CONF_MSTR:
+		mstr = va_arg(ap, char ***);
+		if (!mstr)
+		    debugx(1, DBG_ERR, "getgeneralconfig: internal parameter error");
+		break;
+	    case CONF_CBK:
+		cbk = va_arg(ap, void (*)(FILE *, char *, char *, char *));
+		break;
+	    default:
+		debugx(1, DBG_ERR, "getgeneralconfig: internal parameter error");
+	    }
+	    if (!strcasecmp(opt, word))
+		break;
+	}
+	va_end(ap);
+	
+	if (!word) {
+	    if (block)
+		debugx(1, DBG_ERR, "configuration error in block %s, unknown option %s", block, opt);
+	    debugx(1, DBG_ERR, "configuration error, unknown option %s", opt);
+	}
+
+	if (((type == CONF_STR || type == CONF_MSTR) && conftype != CONF_STR) ||
+	    (type == CONF_CBK && conftype != CONF_CBK)) {
+	    if (block)
+		debugx(1, DBG_ERR, "configuration error in block %s, wrong syntax for option %s", block, opt);
+	    debugx(1, DBG_ERR, "configuration error, wrong syntax for option %s", opt);
+	}
+
+	switch (type) {
+	case CONF_STR:
+	    if (block)
+		debug(DBG_DBG, "getgeneralconfig: block %s: %s = %s", block, opt, val);
+	    else 
+		debug(DBG_DBG, "getgeneralconfig: %s = %s", opt, val);
+	    if (*str)
+		debugx(1, DBG_ERR, "configuration error, option %s already set to %s", opt, *str);
+	    *str = stringcopy(val, 0);
+	    if (!*str)
+		debugx(1, DBG_ERR, "malloc failed");
+	    break;
+	case CONF_MSTR:
+	    if (block)
+		debug(DBG_DBG, "getgeneralconfig: block %s: %s = %s", block, opt, val);
+	    else 
+		debug(DBG_DBG, "getgeneralconfig: %s = %s", opt, val);
+	    if (*mstr)
+		for (n = 0; (*mstr)[n]; n++);
+	    else
+		n = 0;
+	    *mstr = realloc(*mstr, sizeof(char *) * (n + 2));
+	    if (!*mstr)
+		debugx(1, DBG_ERR, "malloc failed");
+	    (*mstr)[n] = stringcopy(val, 0);
+	    (*mstr)[n + 1] = NULL;
+	    break;
+	case CONF_CBK:
+	    optval = malloc(strlen(opt) + strlen(val) + 2);
+	    if (!optval)
+		debugx(1, DBG_ERR, "malloc failed");
+	    sprintf(optval, "%s %s", opt, val);
+	    cbk(f, optval, opt, val);
+	    free(optval);
+	    break;
+	default:
+	    debugx(1, DBG_ERR, "getgeneralconfig: internal parameter error");
+	}
+    }
+}