X-Git-Url: http://www.project-moonshot.org/gitweb/?a=blobdiff_plain;f=gconfig.c;h=b7107aa652213a58af500c9c08f1f15314c78608;hb=c1f196080a7cb867afd3dee50e2910899cbf5f46;hp=05efcec60ef807c3d3196a47344731d459d6d445;hpb=cbd283e0022dd394799786c6504c85df7fd40b5b;p=libradsec.git

diff --git a/gconfig.c b/gconfig.c
index 05efcec..b7107aa 100644
--- a/gconfig.c
+++ b/gconfig.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2007 Stig Venaas <venaas@uninett.no>
+ * Copyright (C) 2007, 2008 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
@@ -10,7 +10,12 @@
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <limits.h>
+#include <glob.h>
 #include <sys/types.h>
+#include <ctype.h>
+#include <libgen.h>
+#include <errno.h>
 #include "debug.h"
 #include "util.h"
 #include "gconfig.h"
@@ -46,49 +51,182 @@ char *strtokenquote(char *s, char **token, char *del, char *quote, char *comment
     return t + 1;
 }
 
-FILE *pushgconffile(struct gconffile **cf, const char *path) {
+int pushgconfdata(struct gconffile **cf, const char *data) {
     int i;
     struct gconffile *newcf;
-    FILE *f;
 
-    f = fopen(path, "r");
-    if (!f) {
-        debug(DBG_INFO, "could not read config file %s", path);
+    if (!*cf) {
+	newcf = malloc(sizeof(struct gconffile) * 2);
+	if (!newcf)
+	    return 0;
+	memset(newcf, 0, sizeof(struct gconffile) * 2);
+    } else {
+	for (i = 0; (*cf)[i].data || (*cf)[i].path; i++);
+	newcf = realloc(*cf, sizeof(struct gconffile) * (i + 2));
+	if (!newcf)
+	    return 0;
+	memmove(newcf + 1, newcf, sizeof(struct gconffile) * (i + 1));
+	memset(newcf, 0, sizeof(struct gconffile));
+    }
+    newcf[0].data = data;
+    *cf = newcf;
+    return 1;
+}
+
+FILE *pushgconffile(struct gconffile **cf, FILE *file, const char *description) {
+    int i;
+    struct gconffile *newcf;
+    char *desc;
+
+    if (!file) {
+        debug(DBG_INFO, "could not read config from %s", description);
 	return NULL;
     }
+    debug(DBG_DBG, "reading config from %s", description);
+
+    desc = stringcopy(description, 0);
+    if (!desc)
+	goto errmalloc;
+
     if (!*cf) {
 	newcf = malloc(sizeof(struct gconffile) * 2);
 	if (!newcf)
-	    debugx(1, DBG_ERR, "malloc failed");
-	newcf[1].path = NULL;
+	    goto errmalloc;
+	memset(newcf, 0, sizeof(struct gconffile) * 2);
     } else {
-	for (i = 0; (*cf)[i].path; i++);
+	for (i = 0; (*cf)[i].data || (*cf)[i].path; i++);
 	newcf = realloc(*cf, sizeof(struct gconffile) * (i + 2));
 	if (!newcf)
-	    debugx(1, DBG_ERR, "malloc failed");
+	    goto errmalloc;
 	memmove(newcf + 1, newcf, sizeof(struct gconffile) * (i + 1));
+	memset(newcf, 0, sizeof(struct gconffile));
     }
-    newcf[0].file = f;
-    newcf[0].path = stringcopy(path, 0);
+    newcf[0].file = file;
+    newcf[0].path = desc;
     *cf = newcf;
+    return file;
+
+errmalloc:
+    free(desc);
+    fclose(file);
+    debug(DBG_ERR, "malloc failed");
+    return NULL;
+}
+
+FILE *pushgconfpath(struct gconffile **cf, const char *path) {
+    FILE *f;
+
+    f = fopen(path, "r");
+    return pushgconffile(cf, f, path);
+}
+
+FILE *pushgconfpaths(struct gconffile **cf, const char *cfgpath) {
+    int i;
+    FILE *f = NULL;
+    glob_t globbuf;
+    char *path, *curfile = NULL, *dir;
+
+    /* if cfgpath is relative, make it relative to current config */
+    if (*cfgpath == '/')
+	path = (char *)cfgpath;
+    else {
+	/* dirname may modify its argument */
+	curfile = stringcopy((*cf)->path, 0);
+	if (!curfile) {
+	    debug(DBG_ERR, "malloc failed");
+	    goto exit;
+	}
+	dir = dirname(curfile);
+	path = malloc(strlen(dir) + strlen(cfgpath) + 2);
+	if (!path) {
+	    debug(DBG_ERR, "malloc failed");
+	    goto exit;
+	}
+	strcpy(path, dir);
+	path[strlen(dir)] = '/';
+	strcpy(path + strlen(dir) + 1, cfgpath);
+    }
+    memset(&globbuf, 0, sizeof(glob_t));
+    if (glob(path, 0, NULL, &globbuf)) {
+	debug(DBG_WARN, "could not glob %s", path);
+	goto exit;
+    }
+
+    for (i = globbuf.gl_pathc - 1; i >= 0; i--) {
+	f = pushgconfpath(cf, globbuf.gl_pathv[i]);
+	if (!f)
+	    break;
+    }
+    globfree(&globbuf);
+
+exit:
+    if (curfile) {
+	free(curfile);
+	free(path);
+    }
     return f;
 }
 
-FILE *popgconffile(struct gconffile **cf) {
+int popgconf(struct gconffile **cf) {
     int i;
 
     if (!*cf)
-	return NULL;
-    for (i = 0; (*cf)[i].path; i++);
-    if (i && (*cf)[0].file)
+	return 0;
+    for (i = 0; (*cf)[i].data || (*cf)[i].path; i++);
+    if (i && (*cf)[0].file) {
 	fclose((*cf)[0].file);
+	if ((*cf)[0].path) {
+	    debug(DBG_DBG, "closing config file %s", (*cf)[0].path);
+	    free((*cf)[0].path);
+	}
+    }
     if (i < 2) {
 	free(*cf);
 	*cf = NULL;
-	return NULL;
+	return 0;
     }
     memmove(*cf, *cf + 1, sizeof(struct gconffile) * i);
-    return (*cf)[0].file;
+    return 1;
+}
+
+void freegconfmstr(char **mstr) {
+    int i;
+
+    if (mstr) {
+	for (i = 0; mstr[i]; i++)
+	    free(mstr[i]);
+	free(mstr);
+    }
+}
+
+void freegconf(struct gconffile **cf) {
+    int i;
+
+    if (!*cf)
+	return;
+
+    for (i = 0; (*cf)[i].data || (*cf)[i].path; i++) {
+	if ((*cf)[i].file) {
+	    fclose((*cf)[i].file);
+	    if ((*cf)[i].path) {
+		debug(DBG_DBG, "closing config file %s", (*cf)[i].path);
+		free((*cf)[i].path);
+	    }
+	}
+    }
+    free(*cf);
+    *cf = NULL;
+}
+
+struct gconffile *openconfigfile(const char *file) {
+    struct gconffile *cf = NULL;
+
+    if (!pushgconfpath(&cf, file)) {
+	debug(DBG_ERR, "could not read config file %s\n%s", file, strerror(errno));
+	return NULL;
+    }
+    debug(DBG_DBG, "reading config file %s", file);
+    return cf;
 }
 
 /* Parses config with following syntax:
@@ -101,20 +239,57 @@ FILE *popgconffile(struct gconffile **cf) {
  *     ...
  * }
  */
-void getgenericconfig(FILE *f, char *block, ...) {
-    va_list ap;
+
+int getlinefromcf(struct gconffile *cf, char *line, const size_t size) {
+    size_t i, pos;
+
+    if (!cf)
+	return 0;
+
+    if (cf->file)
+	return fgets(line, size, cf->file) ? 1 : 0;
+    else if (cf->data) {
+	pos = cf->datapos;
+	if (!cf->data[pos])
+	    return 0;
+	for (i = pos; cf->data[i] && cf->data[i] != '\n'; i++);
+	if (cf->data[i] == '\n')
+	    i++;
+	if (i - pos > size - 1)
+	    i = size - 1 + pos;
+	memcpy(line, cf->data + pos, i - pos);
+	line[i - pos] = '\0';
+	cf->datapos = i;
+	return 1;
+    }
+    return 0;
+}
+
+int getconfigline(struct gconffile **cf, char *block, char **opt, char **val, int *conftype) {
     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)) {
+    char *tokens[3], *s;
+    int tcount;
+
+    *opt = NULL;
+    *val = NULL;
+    *conftype = 0;
+
+    if (!cf || !*cf || (!(*cf)->file && !(*cf)->data))
+	return 1;
+
+    for (;;) {
+	if (!getlinefromcf(*cf, line, 1024)) {
+	    if (popgconf(cf))
+		continue;
+	    return 1;
+	}
 	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 (!s) {
+		debug(DBG_ERR, "Syntax error in line starting with: %s", line);
+		return 0;
+	    }
 	    if (!tokens[tcount])
 		break;
 	}
@@ -123,39 +298,120 @@ void getgenericconfig(FILE *f, char *block, ...) {
 
 	if (**tokens == '}') {
 	    if (block)
-		return;
-	    debugx(1, DBG_ERR, "configuration error, found } with no matching {");
+		return 1;
+	    debug(DBG_ERR, "configuration error, found } with no matching {");
+	    return 0;
 	}
+	break;
+    }
 
-	switch (tcount) {
-	case 2:
-	    opt = tokens[0];
-	    val = tokens[1];
-	    conftype = CONF_STR;
+    switch (tcount) {
+    case 2:
+	*opt = stringcopy(tokens[0], 0);
+	if (!*opt)
+	    goto errmalloc;
+	*val = stringcopy(tokens[1], 0);
+	if (!*val)
+	    goto errmalloc;
+	*conftype = CONF_STR;
+	break;
+    case 3:
+	if (tokens[1][0] == '=' && tokens[1][1] == '\0') {
+	    *opt = stringcopy(tokens[0], 0);
+	    if (!*opt)
+		goto errmalloc;
+	    *val = stringcopy(tokens[2], 0);
+	    if (!*val)
+		goto errmalloc;
+	    *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;
+	}
+	if (tokens[2][0] == '{' && tokens[2][1] == '\0') {
+	    *opt = stringcopy(tokens[0], 0);
+	    if (!*opt)
+		goto errmalloc;
+	    *val = stringcopy(tokens[1], 0);
+	    if (!*val)
+		goto errmalloc;
+	    *conftype = CONF_CBK;
+	    break;
+	}
+	/* fall through */
+    default:
+	if (block)
+	    debug(DBG_ERR, "configuration error in block %s, line starting with %s", block, tokens[0]);
+	else
+	    debug(DBG_ERR, "configuration error, syntax error in line starting with %s", tokens[0]);
+	return 0;
+    }
+
+    if (**val)
+	return 1;
+
+    debug(DBG_ERR, "configuration error, option %s needs a non-empty value", *opt);
+    goto errexit;
+
+errmalloc:
+    debug(DBG_ERR, "malloc failed");
+errexit:
+    free(*opt);
+    *opt = NULL;
+    free(*val);
+    *val = NULL;
+    return 0;
+}
+
+uint8_t hexdigit2int(char d) {
+    if (d >= '0' && d <= '9')
+	return d - '0';
+    if (d >= 'a' && d <= 'f')
+	return 10 + d - 'a';
+    if (d >= 'A' && d <= 'F')
+	return 10 + d - 'A';
+    return 0;
+}
+
+void unhex(char *s) {
+    char *t;
+    for (t = s; *t; s++) {
+	if (*t == '%' && isxdigit((int)t[1]) && isxdigit((int)t[2])) {
+	    *s = 16 * hexdigit2int(t[1]) + hexdigit2int(t[2]);
+	    t += 3;
+	} else
+	    *s = *t++;
+    }
+    *s = '\0';
+}
+
+typedef int (*t_fptr)(struct gconffile **, void *, char *, char *, char *);
+
+/* returns 1 if ok, 0 on error */
+/* caller must free returned values also on error */
+int getgenericconfig(struct gconffile **cf, char *block, ...) {
+    va_list ap;
+    char *opt = NULL, *val, *word, *optval, **str = NULL, ***mstr = NULL, **newmstr, *endptr;
+    uint8_t *bln = NULL;
+    long int *lint = NULL;
+    int type = 0, conftype = 0, n;
+    t_fptr cbk = NULL;
+    void *cbkarg = NULL;
+
+    for (;;) {
+	free(opt);
+	if (!getconfigline(cf, block, &opt, &val, &conftype))
+	    return 0;
+	if (!opt)
+	    return 1;
+
+	if (conftype == CONF_STR && !strcasecmp(opt, "include")) {
+	    if (!pushgconfpaths(cf, val)) {
+		debug(DBG_ERR, "failed to include config file %s", val);
+		goto errexit;
 	    }
-	    /* 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]);
+	    free(val);
+	    continue;
 	}
 
-	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);
@@ -163,74 +419,133 @@ void getgenericconfig(FILE *f, char *block, ...) {
 	    case CONF_STR:
 		str = va_arg(ap, char **);
 		if (!str)
-		    debugx(1, DBG_ERR, "getgeneralconfig: internal parameter error");
+		    goto errparam;
 		break;
 	    case CONF_MSTR:
 		mstr = va_arg(ap, char ***);
 		if (!mstr)
-		    debugx(1, DBG_ERR, "getgeneralconfig: internal parameter error");
+		    goto errparam;
+		break;
+	    case CONF_BLN:
+		bln = va_arg(ap, uint8_t *);
+		if (!bln)
+		    goto errparam;
+		break;
+	    case CONF_LINT:
+		lint = va_arg(ap, long int *);
+		if (!lint)
+		    goto errparam;
 		break;
 	    case CONF_CBK:
-		cbk = va_arg(ap, void (*)(FILE *, char *, char *, char *));
+		cbk = va_arg(ap, t_fptr);
+		if (!cbk)
+		    goto errparam;
+		cbkarg = va_arg(ap, void *);
 		break;
 	    default:
-		debugx(1, DBG_ERR, "getgeneralconfig: internal parameter error");
+		goto errparam;
 	    }
 	    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);
+		debug(DBG_ERR, "configuration error in block %s, unknown option %s", block, opt);
+	    debug(DBG_ERR, "configuration error, unknown option %s", opt);
+	    goto errexit;
 	}
 
-	if (((type == CONF_STR || type == CONF_MSTR) && conftype != CONF_STR) ||
+	if (((type == CONF_STR || type == CONF_MSTR || type == CONF_BLN || type == CONF_LINT) && 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);
+		debug(DBG_ERR, "configuration error in block %s, wrong syntax for option %s", block, opt);
+	    debug(DBG_ERR, "configuration error, wrong syntax for option %s", opt);
+	    goto errexit;
 	}
 
 	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");
+	    if (*str) {
+		debug(DBG_ERR, "configuration error, option %s already set to %s", opt, *str);
+		goto errexit;
+	    }
+	    unhex(val);
+	    *str = val;
 	    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;
+	    newmstr = realloc(*mstr, sizeof(char *) * (n + 2));
+	    if (!newmstr) {
+		debug(DBG_ERR, "malloc failed");
+		goto errexit;
+	    }
+	    unhex(val);
+	    newmstr[n] = val;
+	    newmstr[n + 1] = NULL;
+	    *mstr = newmstr;
+	    break;
+	case CONF_BLN:
+	    if (!strcasecmp(val, "on"))
+		*bln = 1;
+	    else if (!strcasecmp(val, "off"))
+		*bln = 0;
+	    else {
+		if (block)
+		    debug(DBG_ERR, "configuration error in block %s, value for option %s must be on or off, not %s", block, opt, val);
+		else
+		    debug(DBG_ERR, "configuration error, value for option %s must be on or off, not %s", opt, val);
+		goto errexit;
+	    }
+	    break;
+	case CONF_LINT:
+	    endptr = NULL;
+	    *lint = strtol(val, &endptr, 0);
+	    if (*lint == LONG_MIN || *lint == LONG_MAX || !endptr || endptr == val || *endptr != '\0') {
+		if (block)
+		    debug(DBG_ERR, "configuration error in block %s, value for option %s must be an integer, not %s", block, opt, val);
+		else
+		    debug(DBG_ERR, "configuration error, value for option %s must be an integer, not %s", opt, val);
+		goto errexit;
+	    }
 	    break;
 	case CONF_CBK:
 	    optval = malloc(strlen(opt) + strlen(val) + 2);
-	    if (!optval)
-		debugx(1, DBG_ERR, "malloc failed");
+	    if (!optval) {
+		debug(DBG_ERR, "malloc failed");
+		goto errexit;
+	    }
 	    sprintf(optval, "%s %s", opt, val);
-	    cbk(f, optval, opt, val);
+	    if (!cbk(cf, cbkarg, optval, opt, val)) {
+		free(optval);
+		goto errexit;
+	    }
+	    free(val);
 	    free(optval);
-	    break;
+	    continue;
 	default:
-	    debugx(1, DBG_ERR, "getgeneralconfig: internal parameter error");
+	    goto errparam;
 	}
+	if (block)
+	    debug(DBG_DBG, "getgenericconfig: block %s: %s = %s", block, opt, val);
+	else
+	    debug(DBG_DBG, "getgenericconfig: %s = %s", opt, val);
+	if (type == CONF_BLN || type == CONF_LINT)
+	    free(val);
     }
+
+errparam:
+    debug(DBG_ERR, "getgenericconfig: internal parameter error");
+errexit:
+    free(opt);
+    free(val);
+    return 0;
 }
+
+/* Local Variables: */
+/* c-file-style: "stroustrup" */
+/* End: */