270 lines
8.4 KiB
C
270 lines
8.4 KiB
C
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details:
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*
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* Copyright (C) 2014 Aleksander Morgado <aleksander@aleksander.es>
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*/
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#include <config.h>
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#include <string.h>
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#include <stdlib.h>
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#include "ModemManager.h"
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#define _LIBMM_INSIDE_MM
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#include <libmm-glib.h>
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#include "mm-charsets.h"
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#include "mm-errors-types.h"
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#include "mm-modem-helpers-cinterion.h"
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/* Setup relationship between the 3G band bitmask in the modem and the bitmask
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* in ModemManager. */
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typedef struct {
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guint32 cinterion_band_flag;
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MMModemBand mm_band;
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} CinterionBand;
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/* Table checked in HC25 and PHS8 references. This table includes both 2G and 3G
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* frequencies. Depending on which one is configured, one access technology or
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* the other will be used. This may conflict with the allowed mode configuration
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* set, so you shouldn't for example set 3G frequency bands, and then use a
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* 2G-only allowed mode. */
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static const CinterionBand cinterion_bands[] = {
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{ (1 << 0), MM_MODEM_BAND_EGSM },
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{ (1 << 1), MM_MODEM_BAND_DCS },
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{ (1 << 2), MM_MODEM_BAND_PCS },
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{ (1 << 3), MM_MODEM_BAND_G850 },
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{ (1 << 4), MM_MODEM_BAND_U2100 },
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{ (1 << 5), MM_MODEM_BAND_U1900 },
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{ (1 << 6), MM_MODEM_BAND_U850 },
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{ (1 << 7), MM_MODEM_BAND_U900 },
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{ (1 << 8), MM_MODEM_BAND_U800 }
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};
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/*****************************************************************************/
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/* ^SCFG (3G) test parser
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*
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* Example:
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* AT^SCFG=?
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* ...
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* ^SCFG: "MEShutdown/OnIgnition",("on","off")
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* ^SCFG: "Radio/Band",("1-511","0-1")
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* ^SCFG: "Radio/NWSM",("0","1","2")
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* ...
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*
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*/
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gboolean
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mm_cinterion_parse_scfg_test (const gchar *response,
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MMModemCharset charset,
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GArray **supported_bands,
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GError **error)
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{
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GRegex *r;
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GMatchInfo *match_info;
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GError *inner_error = NULL;
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GArray *bands = NULL;
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if (!response) {
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g_set_error (error, MM_CORE_ERROR, MM_CORE_ERROR_FAILED, "Missing response");
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return FALSE;
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}
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r = g_regex_new ("\\^SCFG:\\s*\"Radio/Band\",\\(\"([0-9a-fA-F]*)-([0-9a-fA-F]*)\",.*\\)",
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G_REGEX_DOLLAR_ENDONLY | G_REGEX_RAW,
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0, NULL);
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g_assert (r != NULL);
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g_regex_match_full (r, response, strlen (response), 0, 0, &match_info, &inner_error);
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if (!inner_error && g_match_info_matches (match_info)) {
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gchar *maxbandstr;
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guint maxband = 0;
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maxbandstr = mm_get_string_unquoted_from_match_info (match_info, 2);
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if (maxbandstr) {
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/* Handle charset conversion if the number is given in UCS2 */
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if (charset != MM_MODEM_CHARSET_UNKNOWN)
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maxbandstr = mm_charset_take_and_convert_to_utf8 (maxbandstr, charset);
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mm_get_uint_from_str (maxbandstr, &maxband);
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}
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if (maxband == 0) {
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inner_error = g_error_new (MM_CORE_ERROR,
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MM_CORE_ERROR_FAILED,
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"Couldn't parse ^SCFG=? response");
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} else {
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guint i;
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for (i = 0; i < G_N_ELEMENTS (cinterion_bands); i++) {
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if (maxband & cinterion_bands[i].cinterion_band_flag) {
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if (G_UNLIKELY (!bands))
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bands = g_array_sized_new (FALSE, FALSE, sizeof (MMModemBand), 9);
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g_array_append_val (bands, cinterion_bands[i].mm_band);
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}
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}
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}
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g_free (maxbandstr);
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}
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if (match_info)
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g_match_info_free (match_info);
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g_regex_unref (r);
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if (!bands)
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inner_error = g_error_new (MM_CORE_ERROR,
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MM_CORE_ERROR_FAILED,
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"No valid bands found in ^SCFG=? response");
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if (inner_error) {
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g_propagate_error (error, inner_error);
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return FALSE;
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}
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g_assert (bands != NULL && bands->len > 0);
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*supported_bands = bands;
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return TRUE;
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}
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/*****************************************************************************/
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/* ^SCFG response parser
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*
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* Example (3G):
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* AT^SCFG="Radio/Band"
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* ^SCFG: "Radio/Band",127
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*
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* Example (2G, UCS-2):
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* AT+SCFG="Radio/Band"
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* ^SCFG: "Radio/Band","0031","0031"
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*
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* Example (2G):
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* AT+SCFG="Radio/Band"
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* ^SCFG: "Radio/Band","3","3"
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*/
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gboolean
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mm_cinterion_parse_scfg_response (const gchar *response,
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MMModemCharset charset,
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GArray **current_bands,
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GError **error)
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{
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GRegex *r;
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GMatchInfo *match_info;
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GError *inner_error = NULL;
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GArray *bands = NULL;
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if (!response) {
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g_set_error (error, MM_CORE_ERROR, MM_CORE_ERROR_FAILED, "Missing response");
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return FALSE;
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}
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r = g_regex_new ("\\^SCFG:\\s*\"Radio/Band\",\\s*\"?([0-9a-fA-F]*)\"?", 0, 0, NULL);
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g_assert (r != NULL);
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if (g_regex_match_full (r, response, strlen (response), 0, 0, &match_info, NULL)) {
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gchar *currentstr;
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guint current = 0;
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currentstr = mm_get_string_unquoted_from_match_info (match_info, 1);
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if (currentstr) {
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/* Handle charset conversion if the number is given in UCS2 */
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if (charset != MM_MODEM_CHARSET_UNKNOWN)
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currentstr = mm_charset_take_and_convert_to_utf8 (currentstr, charset);
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mm_get_uint_from_str (currentstr, ¤t);
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}
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if (current == 0) {
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inner_error = g_error_new (MM_CORE_ERROR,
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MM_CORE_ERROR_FAILED,
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"Couldn't parse ^SCFG response");
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} else {
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guint i;
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for (i = 0; i < G_N_ELEMENTS (cinterion_bands); i++) {
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if (current & cinterion_bands[i].cinterion_band_flag) {
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if (G_UNLIKELY (!bands))
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bands = g_array_sized_new (FALSE, FALSE, sizeof (MMModemBand), 9);
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g_array_append_val (bands, cinterion_bands[i].mm_band);
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}
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}
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}
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g_free (currentstr);
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}
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if (match_info)
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g_match_info_free (match_info);
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g_regex_unref (r);
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if (!bands)
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inner_error = g_error_new (MM_CORE_ERROR,
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MM_CORE_ERROR_FAILED,
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"No valid bands found in ^SCFG response");
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if (inner_error) {
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g_propagate_error (error, inner_error);
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return FALSE;
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}
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g_assert (bands != NULL && bands->len > 0);
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*current_bands = bands;
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return TRUE;
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}
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/*****************************************************************************/
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/* Build Cinterion-specific band value */
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gboolean
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mm_cinterion_build_band (GArray *bands,
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guint supported,
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guint *out_band,
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GError **error)
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{
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guint band = 0;
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/* The special case of ANY should be treated separately. */
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if (bands->len == 1 && g_array_index (bands, MMModemBand, 0) == MM_MODEM_BAND_ANY) {
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band = supported;
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} else {
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guint i;
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for (i = 0; i < G_N_ELEMENTS (cinterion_bands); i++) {
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guint j;
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for (j = 0; j < bands->len; j++) {
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if (g_array_index (bands, MMModemBand, j) == cinterion_bands[i].mm_band) {
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band |= cinterion_bands[i].cinterion_band_flag;
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break;
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}
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}
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}
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}
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if (band == 0) {
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gchar *bands_string;
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bands_string = mm_common_build_bands_string ((MMModemBand *)bands->data, bands->len);
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g_set_error (error,
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MM_CORE_ERROR,
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MM_CORE_ERROR_FAILED,
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"The given band combination is not supported: '%s'",
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bands_string);
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g_free (bands_string);
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return FALSE;
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}
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*out_band = band;
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return TRUE;
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}
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