diff options
Diffstat (limited to 'src/mm-modem-helpers.c')
| -rw-r--r-- | src/mm-modem-helpers.c | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/src/mm-modem-helpers.c b/src/mm-modem-helpers.c new file mode 100644 index 00000000..809eab9a --- /dev/null +++ b/src/mm-modem-helpers.c @@ -0,0 +1,140 @@ +/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; 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: + * + * Copyright (C) 2008 - 2009 Novell, Inc. + * Copyright (C) 2009 - 2010 Red Hat, Inc. + */ + +#include <glib.h> +#include <string.h> + +#include "mm-errors.h" +#include "mm-modem-helpers.h" + +GPtrArray * +mm_gsm_parse_scan_response (const char *reply, GError **error) +{ + /* Got valid reply */ + GPtrArray *results = NULL; + GRegex *r; + GMatchInfo *match_info; + GError *err = NULL; + gboolean umts_format = TRUE; + + g_return_val_if_fail (reply != NULL, NULL); + if (error) + g_return_val_if_fail (*error == NULL, NULL); + + if (!strstr (reply, "+COPS: ")) { + g_set_error_literal (error, + MM_MODEM_ERROR, MM_MODEM_ERROR_GENERAL, + "Could not parse scan results."); + return NULL; + } + + reply = strstr (reply, "+COPS: ") + 7; + + /* Cell access technology (GSM, UTRAN, etc) got added later and not all + * modems implement it. Some modesm have quirks that make it hard to + * use one regular experession for matching both pre-UMTS and UMTS + * responses. So try UMTS-format first and fall back to pre-UMTS if + * we get no UMTS-formst matches. + */ + + /* Quirk: Sony-Ericsson TM-506 sometimes includes a stray ')' like so, + * which is what makes it hard to match both pre-UMTS and UMTS in + * the same regex: + * + * +COPS: (2,"","T-Mobile","31026",0),(1,"AT&T","AT&T","310410"),0) + */ + + r = g_regex_new ("\\((\\d),\"(.*)\",\"(.*)\",\"(.*)\"[\\)]?,(\\d)\\)", G_REGEX_UNGREEDY, 0, &err); + if (err) { + g_error ("Invalid regular expression: %s", err->message); + g_error_free (err); + g_set_error_literal (error, + MM_MODEM_ERROR, MM_MODEM_ERROR_GENERAL, + "Could not parse scan results."); + return NULL; + } + + /* If we didn't get any hits, try the pre-UMTS format match */ + if (!g_regex_match (r, reply, 0, &match_info)) { + g_regex_unref (r); + if (match_info) { + g_match_info_free (match_info); + match_info = NULL; + } + + /* Pre-UMTS format doesn't include the cell access technology after + * the numeric operator element. + * + * Ex: Motorola C-series (BUSlink SCWi275u) like so: + * + * +COPS: (2,"T-Mobile","","310260"),(0,"Cingular Wireless","","310410") + */ + r = g_regex_new ("\\((\\d),\"(.*)\",\"(.*)\",\"(.*)\"\\)", G_REGEX_UNGREEDY, 0, &err); + if (err) { + g_error ("Invalid regular expression: %s", err->message); + g_error_free (err); + g_set_error_literal (error, + MM_MODEM_ERROR, MM_MODEM_ERROR_GENERAL, + "Could not parse scan results."); + return NULL; + } + + g_regex_match (r, reply, 0, &match_info); + umts_format = FALSE; + } + + /* Parse the results */ + results = g_ptr_array_new (); + while (g_match_info_matches (match_info)) { + GHashTable *hash; + char *access_tech = NULL; + + hash = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free); + g_hash_table_insert (hash, g_strdup (MM_SCAN_TAG_STATUS), g_match_info_fetch (match_info, 1)); + g_hash_table_insert (hash, g_strdup (MM_SCAN_TAG_OPER_LONG), g_match_info_fetch (match_info, 2)); + g_hash_table_insert (hash, g_strdup (MM_SCAN_TAG_OPER_SHORT), g_match_info_fetch (match_info, 3)); + g_hash_table_insert (hash, g_strdup (MM_SCAN_TAG_OPER_NUM), g_match_info_fetch (match_info, 4)); + + /* Only try for access technology with UMTS-format matches */ + if (umts_format) + access_tech = g_match_info_fetch (match_info, 5); + if (access_tech && (strlen (access_tech) == 1)) { + /* Recognized access technologies are between '0' and '6' inclusive... */ + if ((access_tech[0] >= 48) && (access_tech[0] <= 54)) + g_hash_table_insert (hash, g_strdup (MM_SCAN_TAG_ACCESS_TECH), access_tech); + } else + g_free (access_tech); + + g_ptr_array_add (results, hash); + + g_match_info_next (match_info, NULL); + } + + g_match_info_free (match_info); + g_regex_unref (r); + + return results; +} + +void +mm_gsm_destroy_scan_data (gpointer data) +{ + GPtrArray *results = (GPtrArray *) data; + + g_ptr_array_foreach (results, (GFunc) g_hash_table_destroy, NULL); + g_ptr_array_free (results, TRUE); +} + |