m + construct msg for daemon

Signed-off-by: Mattias Andrée <maandree@member.fsf.org>

1 files changed, 62 insertions, 13 deletions

diff --git a/src/sat.c b/src/sat.c
index 4860a4d..969722a 100644
--- a/src/sat.c
+++ b/src/sat.c
@@ -48,25 +48,63 @@ usage(void)
 
 
 /**
+ * Return the number of bytes required to store a string array.
+ * 
+ * @param   array  The string array.
+ * @return         The number of bytes required to store the array.
+ */
+static size_t
+measure_array(char *array[])
+{
+	size_t rc = 1;
+	for (; *array; array++)
+		rc += strlen(*array) + 1;
+	return rc * sizeof(char);
+}
+
+
+/**
+ * Store a string array.
+ * 
+ * @param   storage  The buffer where the array is to be stored.
+ * @param   array    The array to store.
+ * @return           Where in the buffer the array ends.
+ */
+static char *
+store_array(char *restrict storage, char *array[])
+{
+	for (; *array; array++) {
+		storage = stpcpy(storage, *array);
+		*storage++ = 0;
+	}
+	*storage++ = 0;
+	return storage;
+}
+
+
+/**
  * Queue a job for later execution.
  * 
- * @param  argc  You guess!
- * @param  argv  The first element should be the name of the process,
- *               the second argument should be the POSIX time (seconds
- *               since Epoch (1970-01-01 00:00:00 UTC), disregarding
- *               leap seconds) the job shall be executed. The rest of
- *               the arguments (being at least one) shoul be the
- *               command line arguments for the job the run.
- * @return  0    The process was successful.
- * @return  1    The process failed queuing the job.
- * @return  2    User error, you do not know what you are doing.
- * @return  3    satd(1) failed to queue the job.
+ * @param   argc  You guess!
+ * @param   argv  The first element should be the name of the process,
+ *                the second argument should be the POSIX time (seconds
+ *                since Epoch (1970-01-01 00:00:00 UTC), disregarding
+ *                leap seconds) the job shall be executed. The rest of
+ *                the arguments (being at least one) shoul be the
+ *                command line arguments for the job the run.
+ * @param   envp  The environment.
+ * @return  0     The process was successful.
+ * @return  1     The process failed queuing the job.
+ * @return  2     User error, you do not know what you are doing.
+ * @return  3     satd(1) failed to queue the job.
  */
 int
-main(int argc, char *argv[])
+main(int argc, char *argv[], char *envp[])
 {
 	struct timespec ts;
 	clockid_t clk;
+	char *message;
+	size_t message_size;
 
 	if ((argc < 3) || (argv[1][0] == '-')) {
 		usage();
@@ -74,7 +112,8 @@ main(int argc, char *argv[])
 
 	argv0 = argv[0];
 
-	if (parse_time(str, &ts, &clk)) {
+	/* Parse the time argument. */
+	if (parse_time(argv[1], &ts, &clk)) {
 		switch (errno) {
 		case EINVAL:
 			fprintf(stderr,
@@ -96,6 +135,16 @@ main(int argc, char *argv[])
 		}
 	}
 
+	argc -= 2;
+	argv += 2;
+
+	/* Construct message to send to the daemon. */
+	message_size = measure_array(argv) + measure_array(envp);
+	message = malloc(message_size);
+	if (!message)
+		goto fail;
+	store_array(store_array(message, argv), envp);
+
 fail:
 	perror(argv0);
 	return 1;