Imported Upstream version 1.1.11upstream/1.1.11upstream

1 files changed, 139 insertions, 0 deletions

diff --git a/wodim/defaults.c b/wodim/defaults.c
new file mode 100644
index 0000000..a09da6c
--- /dev/null
+++ b/wodim/defaults.c
@@ -0,0 +1,139 @@
+/* 
+ * Copyright 2006 Eduard Bloch 
+ *
+ * This code emulates the interface of the original defaults.c file. However,
+ * it improves its behaviour and deals with corner cases: prepended and
+ * trailing spaces on variable and value, no requirement for using TABs
+ * anymore. No requirements to insert dummy values like -1 or "".
+ *
+ */
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; see the file COPYING.  If not, write to the Free Software
+ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <mconfig.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <deflts.h>
+#include <ctype.h>
+#include <string.h>
+
+#define CFGPATH "/etc/wodim.conf"
+/* The better way would be exporting the meta functions to getnum.h or so */
+extern int	getnum(char *arg, long *valp);
+
+void 
+cdr_defaults(char **p_dev_name, int *p_speed, long *p_fifosize, 
+					char **p_drv_opts)
+{
+	char *t; /* tmp */
+	int wc=0;
+	char loc[256], sSpeed[11], sFs[11], sOpts[81];
+	char *devcand=NULL;
+
+  cfg_open(CFGPATH);
+
+	if(p_dev_name && *p_dev_name)
+		devcand=*p_dev_name;
+	else if(NULL!=(t=getenv("CDR_DEVICE")))
+		devcand=t;
+	else if(NULL!=(t=cfg_get("CDR_DEVICE")))
+		devcand=strdup(t); /* needs to use it as a key later, same stat. memory */
+
+	if(devcand && NULL != (t=cfg_get(devcand))) {
+		/* extract them now, may be used later */
+		wc=sscanf(t, "%255s %10s %10s %80s", loc, sSpeed, sFs, sOpts);
+	}
+
+	if(p_dev_name) {
+		if(wc>0)
+			*p_dev_name = strdup(loc);
+		else if(devcand) /* small mem. leak possible, does not matter, checks for that would require more code size than we loose */
+			*p_dev_name=strdup(devcand);
+	}
+	if(p_speed) { /* sth. to write back */
+		char *bad;
+		int cfg_speed=-1;
+
+		/* that value may be used twice */
+		if(NULL!=(t=cfg_get("CDR_SPEED"))) {
+			cfg_speed=strtol(t,&bad,10);
+			if(*bad || cfg_speed<-1) {
+				fprintf(stderr, "Bad default CDR_SPEED setting (%s).\n", t);
+				exit(EXIT_FAILURE);
+			}
+		}
+
+		if(*p_speed>0) { 
+			/* ok, already set by the program arguments */
+		}
+		else if(NULL!=(t=getenv("CDR_SPEED"))) {
+			*p_speed=strtol(t,&bad,10);
+			if(*bad || *p_speed<-1) {
+				fprintf(stderr, "Bad CDR_SPEED environment (%s).\n", t);
+				exit(EXIT_FAILURE);
+			}
+		}
+		else if(wc>1 && *sSpeed) {
+			*p_speed=strtol(sSpeed, &bad, 10);
+			if(*bad || *p_speed<-1) {
+				fprintf(stderr, "Bad speed (%s) in the config, drive description.\n", sSpeed);
+				exit(EXIT_FAILURE);
+			}
+			if(*p_speed==-1) 
+				/* that's autodetect, use the config default as last ressort */
+				*p_speed=cfg_speed;
+		}
+		else 
+			*p_speed=cfg_speed;
+	}
+	if(p_fifosize) { /* sth. to write back */
+		if(*p_fifosize>0) { 
+			/* ok, already set by the user */
+		}
+		else if(NULL!=(t=getenv("CDR_FIFOSIZE"))) {
+			if(getnum(t, p_fifosize)!=1 || *p_fifosize<-1) {
+				fprintf(stderr, "Bad CDR_FIFOSIZE environment (%s).\n", t);
+				exit(EXIT_FAILURE);
+			}
+		}
+		else if(wc>2 && *sFs && strcmp("-1", sFs)) {
+			if(getnum(sFs, p_fifosize)!=1 || *p_fifosize<-1) {
+				fprintf(stderr, "Bad fifo size (%s) in the config, device description.\n", sFs);
+				exit(EXIT_FAILURE);
+			}
+		}
+		else if(NULL!=(t=cfg_get("CDR_FIFOSIZE"))) {
+			if(getnum(t, p_fifosize)!=1 || *p_fifosize<-1) {
+				fprintf(stderr, "Bad speed default setting (%s).\n", t);
+				exit(EXIT_FAILURE);
+			}
+		}
+		if(NULL!=(t=cfg_get("CDR_MAXFIFOSIZE"))) {
+			long max;
+			if(getnum(t, &max)!=1 || *p_fifosize<-1) {
+				fprintf(stderr, "Bad CDR_MAXFIFOSIZE setting (%s).\n", t);
+				exit(EXIT_FAILURE);
+			}
+			if(*p_fifosize>max)
+				*p_fifosize=max;
+		}
+	}
+
+	if(p_drv_opts && !*p_drv_opts && wc>3 && strcmp(sOpts, "\"\""))
+		*p_drv_opts=strdup(sOpts);
+
+  cfg_close();
+
+}