libqcdm: new 'reset' tester

Just like 'modepref', but not doing any mode changes, just OFFLINE+RESET.

.gitignore

@@ -63,6 +63,8 @@ vapi/libmm-glib.vapi
 libqcdm/tests/test-qcdm
 libqcdm/tests/modepref
 libqcdm/tests/ipv6pref
+libqcdm/tests/reset
+
 libwmc/tests/test-wmc
 
 data/org.freedesktop.ModemManager1.conf

libqcdm/tests/Makefile.am

@@ -1,6 +1,6 @@
 include $(top_srcdir)/gtester.make
 
-noinst_PROGRAMS = test-qcdm modepref ipv6pref
+noinst_PROGRAMS = test-qcdm modepref ipv6pref reset
 TEST_PROGS += test-qcdm
 
 test_qcdm_SOURCES = \
@@ -35,12 +35,21 @@ ipv6pref_CPPFLAGS = \
 	-I$(top_srcdir)/src
 ipv6pref_LDADD = $(MM_LIBS)
 
+reset_SOURCES = reset.c
+reset_CPPFLAGS = \
+	$(MM_CFLAGS) \
+	-I$(top_srcdir)/libqcdm/src \
+	-I$(top_srcdir)/src
+reset_LDADD = $(MM_LIBS)
+
 if QCDM_STANDALONE
 test_qcdm_LDADD += $(top_builddir)/src/libqcdm.la
 modepref_LDADD += $(top_builddir)/src/libqcdm.la
 ipv6pref_LDADD += $(top_builddir)/src/libqcdm.la
+reset_LDADD +=  $(top_builddir)/src/libqcdm.la
 else
 test_qcdm_LDADD += $(top_builddir)/libqcdm/src/libqcdm.la
 modepref_LDADD += $(top_builddir)/libqcdm/src/libqcdm.la
 ipv6pref_LDADD += $(top_builddir)/libqcdm/src/libqcdm.la
+reset_LDADD += $(top_builddir)/libqcdm/src/libqcdm.la
 endif

libqcdm/tests/reset.c

@@ -0,0 +1,260 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
+/* This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Copyright (C) 2012 Red Hat, Inc.
+ * Copyright (C) 2014 Aleksander Morgado <aleksander@aleksander.es>
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <sys/ioctl.h>
+#include <fcntl.h>
+#include <termios.h>
+#include <assert.h>
+#include <unistd.h>
+
+#include "utils.h"
+#include "errors.h"
+#include "commands.h"
+#include "com.h"
+
+static int debug = 0;
+
+static void
+print_buf (const char *detail, const char *buf, size_t len)
+{
+    int i = 0, z;
+    qcdmbool newline = FALSE;
+    char tmp[500];
+    u_int32_t flen;
+
+    flen = snprintf (tmp, sizeof (tmp) - 1, "%s (%zu)  ", detail, len);
+    fprintf (stdout, "%s", tmp);
+    for (i = 0; i < len; i++) {
+        fprintf (stdout, "%02x ", buf[i] & 0xFF);
+        if (((i + 1) % 16) == 0) {
+            fprintf (stdout, "\n");
+            z = flen;
+            while (z--)
+                fprintf (stdout, " ");
+            newline = TRUE;
+        } else
+            newline = FALSE;
+    }
+
+    if (!newline)
+        fprintf (stdout, "\n");
+}
+
+static int
+com_setup (const char *port)
+{
+    int ret, fd;
+
+    errno = 0;
+    fd = open (port, O_RDWR | O_EXCL | O_NONBLOCK | O_NOCTTY);
+    if (fd < 0) {
+        fprintf (stderr, "E: failed to open port %s\n", port);
+        return -1;
+    }
+
+    ret = ioctl (fd, TIOCEXCL);
+    if (ret) {
+        fprintf (stderr, "E: failed to lock port %s\n", port);
+        close (fd);
+        return -1;
+    }
+
+    return fd;
+}
+
+/******************************************************************/
+
+static qcdmbool
+qcdm_send (int fd, char *buf, size_t len)
+{
+    int status;
+    int eagain_count = 1000;
+    size_t i = 0;
+
+    if (debug)
+        print_buf ("DM:ENC>>>", buf, len);
+
+    while (i < len) {
+        errno = 0;
+        status = write (fd, &buf[i], 1);
+        if (status < 0) {
+            if (errno == EAGAIN) {
+                eagain_count--;
+                if (eagain_count <= 0)
+                    return FALSE;
+            } else
+                assert (errno == 0);
+        } else
+            i++;
+
+        usleep (1000);
+    }
+
+    return TRUE;
+}
+
+static size_t
+qcdm_wait_reply (int fd, char *buf, size_t len)
+{
+    fd_set in;
+    int result;
+    struct timeval timeout = { 1, 0 };
+    char readbuf[1024];
+    ssize_t bytes_read;
+    int total = 0, retries = 0;
+    size_t decap_len = 0;
+
+    FD_ZERO (&in);
+    FD_SET (fd, &in);
+    result = select (fd + 1, &in, NULL, NULL, &timeout);
+    if (result != 1 || !FD_ISSET (fd, &in))
+        return 0;
+
+    do {
+        errno = 0;
+        bytes_read = read (fd, &readbuf[total], 1);
+        if ((bytes_read == 0) || (errno == EAGAIN)) {
+            /* Haven't gotten the async control char yet */
+            if (retries > 20)
+                return 0; /* 2 seconds, give up */
+
+            /* Otherwise wait a bit and try again */
+            usleep (100000);
+            retries++;
+            continue;
+        } else if (bytes_read == 1) {
+            qcdmbool more = FALSE;
+            qcdmbool success;
+            size_t used = 0;
+
+            total++;
+            decap_len = 0;
+            success = dm_decapsulate_buffer (readbuf, total, buf, len, &decap_len, &used, &more);
+
+            /* Discard used data */
+            if (used > 0) {
+                total -= used;
+                memmove (readbuf, &readbuf[used], total);
+            }
+
+            if (success && !more) {
+                /* Success; we have a packet */
+                break;
+            }
+        } else {
+            /* Some error occurred */
+            return 0;
+        }
+    } while (total < sizeof (readbuf));
+
+    if (debug)
+        print_buf ("QCDM:DEC<<", buf, decap_len);
+
+    return decap_len;
+}
+
+static int
+qcdm_set_mode (int fd, u_int8_t mode)
+{
+    int err;
+    char buf[512];
+    size_t len;
+    QcdmResult *result;
+    size_t reply_len;
+
+    len = qcdm_cmd_control_new (buf, sizeof (buf), mode);
+    assert (len);
+
+    /* Send the command */
+    if (!qcdm_send (fd, buf, len)) {
+        fprintf (stderr, "E: failed to send QCDM Control command\n");
+        goto error;
+    }
+
+    reply_len = qcdm_wait_reply (fd, buf, sizeof (buf));
+    if (!reply_len) {
+        fprintf (stderr, "E: failed to receive Control command reply\n");
+        goto error;
+    }
+
+    /* Parse the response into a result structure */
+    err = QCDM_SUCCESS;
+    result = qcdm_cmd_control_result (buf, reply_len, &err);
+    if (!result) {
+        fprintf (stderr, "E: failed to parse Control command reply: %d\n", err);
+        goto error;
+    }
+
+    qcdm_result_unref (result);
+    return 0;
+
+error:
+    return -1;
+}
+
+/******************************************************************/
+
+static void
+usage (const char *prog)
+{
+    fprintf (stderr, "Usage: %s <DM port> [--debug]\n", prog);
+}
+
+int
+main (int argc, char *argv[])
+{
+    const char *dmport = argv[1];
+    int fd, err;
+
+    if (argc < 1 || argc > 3) {
+        usage (argv[0]);
+        return 1;
+    }
+
+    if (argc == 3 && strcasecmp (argv[2], "--debug") == 0)
+        debug = 1;
+
+    if (debug)
+        putenv ("QCDM_DEBUG=1");
+
+    fd = com_setup (dmport);
+    if (fd < 0)
+        return 1;
+
+    err = qcdm_port_setup (fd);
+    if (err != QCDM_SUCCESS) {
+        fprintf (stderr, "E: failed to set up DM port %s: %d\n", dmport, err);
+        return 1;
+    }
+
+    /* Send DM reset command */
+    printf ("setting offline...\n");
+    qcdm_set_mode (fd, QCDM_CMD_CONTROL_MODE_OFFLINE);
+    sleep (2);
+    printf ("reset...\n");
+    qcdm_set_mode (fd, QCDM_CMD_CONTROL_MODE_RESET);
+    sleep (2);
+    printf ("done\n");
+
+    return 0;
+}