X-Git-Url: http://git.tuebingen.mpg.de/?p=paraslash.git;a=blobdiff_plain;f=send_common.c;h=12d7ee1dadd5d591e185354961b0ca4dbcce1430;hp=f570273f6c3b5d4aaa71133463d16c54149efc69;hb=e752cdeab213b329552e1eecd5687bca512217c5;hpb=5d67c3dcd623fb61ca6ec4b427eeeb51daeca71e

diff --git a/send_common.c b/send_common.c
index f570273f..12d7ee1d 100644
--- a/send_common.c
+++ b/send_common.c
@@ -7,6 +7,7 @@
 /** \file send_common.c Functions used by more than one paraslash sender. */
 
 #include <dirent.h>
+#include <osl.h>
 #include "para.h"
 #include "error.h"
 #include "string.h"
@@ -214,7 +215,7 @@ void init_sender_status(struct sender_status *ss, char **access_arg,
  *
  * \return The string printed in the "si" command.
  */
-char *get_sender_info(struct sender_status *ss, char *name)
+char *get_sender_info(struct sender_status *ss, const char *name)
 {
 	char *clnts = NULL, *ret;
 	struct sender_client *sc, *tmp_sc;
@@ -393,3 +394,91 @@ char *generic_sender_help(void)
 		"example: allow 127.0.0.1 32\n"
 	);
 }
+
+static int parse_fec_parms(const char *arg, struct sender_command_data *scd)
+{
+	int32_t val;
+	char *a = para_strdup(arg), *b = a, *e = strchr(b, ':');
+	int ret = -E_COMMAND_SYNTAX;
+
+	/* parse max slice bytes */
+	if (!e)
+		goto out;
+	*e = '\0';
+	ret = para_atoi32(b, &val);
+	if (ret < 0)
+		goto out;
+	ret = -ERRNO_TO_PARA_ERROR(EINVAL);
+	if (val < 0 || val > 65535)
+		goto out;
+	scd->max_slice_bytes = val;
+	/* parse data_slices_per_group */
+	b = e + 1;
+	e = strchr(b, ':');
+	ret = -E_COMMAND_SYNTAX;
+	if (!e)
+		goto out;
+	*e = '\0';
+	ret = para_atoi32(b, &val);
+	if (ret < 0)
+		goto out;
+	ret = -ERRNO_TO_PARA_ERROR(EINVAL);
+	if (val < 0 || val > 255)
+		goto out;
+	scd->data_slices_per_group = val;
+	/* parse slices_per_group */
+	b = e + 1;
+	ret = para_atoi32(b, &val);
+	if (ret < 0)
+		goto out;
+	ret = -ERRNO_TO_PARA_ERROR(EINVAL);
+	if (val < 0 || val < scd->data_slices_per_group)
+		goto out;
+	scd->slices_per_group = val;
+	ret = 0;
+out:
+	free(a);
+	return ret;
+}
+
+/**
+ * Parse a FEC URL string.
+ *
+ * \param arg the URL string to parse.
+ * \param scd The structure containing host, port and the FEC parameters.
+ *
+ * \return Standard.
+ *
+ * A FEC URL consists of an ordinary URL string according to RFC 3986,
+ * optionally followed by a slash and the three FEC parameters slice_size,
+ * data_slices_per_group and slices_per_group. The three FEC parameters are
+ * separated by colons.
+ *
+ * \sa \ref parse_url().
+ */
+int parse_fec_url(const char *arg, struct sender_command_data *scd)
+{
+	int ret;
+	ssize_t len = sizeof(scd->host);
+	char *a = para_strdup(arg), *p = strchr(a, '/');
+
+	if (p) {
+		*p = '\0';
+		len = strlen(a);
+	}
+	ret = -ERRNO_TO_PARA_ERROR(EINVAL);
+	if (!parse_url(a, scd->host, len, &scd->port))
+		goto out;
+	if (p) {
+		ret = parse_fec_parms(p + 1, scd);
+		goto out;
+	}
+	/* use default fec parameters. */
+	scd->max_slice_bytes = 1490;
+	scd->slices_per_group = 16;
+	scd->data_slices_per_group = 14;
+	ret = 0;
+out:
+	free(a);
+	return ret;
+}