trunk/src/geotoad.c

/*
 * Copyright (C) 2009 Till Harbaum <till@harbaum.org>.
 *
 * This file is part of GPXView.
 *
 * GPXView 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 3 of the License, or
 * (at your option) any later version.
 *
 * GPXView 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 GPXView.  If not, see <http://www.gnu.org/licenses/>.
 */

#include "gpxview.h"

#define __USE_GNU
#include <string.h>

#include <fcntl.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <errno.h>
#include <math.h>

#if defined(USE_MAEMO) && (MAEMO_VERSION_MAJOR >= 5)
#include <hildon/hildon-entry.h>
#endif

#define GEOTOAD "/usr/bin/geotoad"

#define COLOR_ERR     "red"
#define COLOR_OK      "darkgreen"
#define COLOR_SYSTEM  "darkblue"

#define BUFFER_SIZE  256

typedef enum {
  GT_STATE_ILLEGAL = 0,
  GT_STATE_STARTED,
  GT_STATE_PREMATURE_END,
  GT_STATE_SAVE_FOUND,
} gt_state_t;

typedef struct {
  appdata_t *appdata;
  
  GPtrArray *argv;
  gchar *info, *color;
  GMutex *update_mutex;
  GCond *update_cond;

  gt_state_t state;

  GtkWidget *dialog;

  long pid;

  struct log_s {
    GtkTextBuffer *buffer;
    GtkWidget *view;
  } log;

  GtkWidget *username, *password;
  GtkWidget *lat, *lon, *dst;
  char *filename;

  int use_cnt;
  
} gt_context_t;

static void arg_free(gpointer data, gpointer user_data) {
  if(data) g_free(data);
}

static void context_free(gt_context_t *context) {
  context->use_cnt--;
    
  if(context->use_cnt > 0)
    printf("still in use by %d, keeping context\n", context->use_cnt);
  else {
    printf("freeing context\n");

    if(context->info) g_free(context->info);

    if(context->argv) {
      g_ptr_array_foreach(context->argv, arg_free, NULL);
      g_ptr_array_free (context->argv, TRUE);
    }

    if(context->filename) g_free(context->filename);

    g_free(context);
  }
}

static void appendf(struct log_s *log, char *colname, 
                    const char *fmt, ...) {
  va_list args;
  va_start( args, fmt );
  char *buf = g_strdup_vprintf(fmt, args);
  va_end( args );

  //  printf("append: %s", buf);

  GtkTextTag *tag = NULL;
  if(colname)
    tag = gtk_text_buffer_create_tag(log->buffer, NULL,
                                     "foreground", colname,
                                     NULL);
  
  GtkTextIter end;
  gtk_text_buffer_get_end_iter(log->buffer, &end);
  if(tag) 
    gtk_text_buffer_insert_with_tags(log->buffer, &end, buf, -1, tag, NULL);
  else    
    gtk_text_buffer_insert(log->buffer, &end, buf, -1);

  g_free(buf);

  gtk_text_view_scroll_to_iter(GTK_TEXT_VIEW(log->view),
                               &end, 0.0, TRUE, 1.0, 1.0); 
}

// This function receives a requst from a worker thread asking to
// update the gui with the required info.
gboolean cb_update_job(gt_context_t *context) {
  if (context->info) {

    /* check if client reports "saved to ..." */
    if(strstr(context->info, "Saved to "))
      context->state = GT_STATE_SAVE_FOUND;

    appendf(&context->log, context->color, context->info);
    
    g_free(context->info);
    context->info = NULL;
  }
  
  // Indicate that the update is done
  g_mutex_lock(context->update_mutex);
  g_cond_signal(context->update_cond);
  g_mutex_unlock(context->update_mutex);
  
  return FALSE;
}

// A helper function run in the job thread receiving the string that
// should be displayed in the textview.
void append_parentf(gt_context_t *context, char *colname, 
             const char *fmt, ...) {
  va_list args;
  va_start( args, fmt );
  context->info = g_strdup_vprintf(fmt, args);
  va_end( args );

  if(colname)
    context->color = colname;
  else
    context->color = NULL;

  // Lock mutex to make sure that we will receive the condition signal
  g_mutex_lock(context->update_mutex);

  g_idle_add((GSourceFunc)cb_update_job, context);
  
  // Wait for cb_update_job to tell me that the update is done
  g_cond_wait(context->update_cond, context->update_mutex);
  g_mutex_unlock(context->update_mutex);
}

/* custom version of popen to get access to the pid and to be able */
/* to slaughter the child process */
static FILE *gt_popen(gt_context_t *context, char **args, 
                      const char *type, long *tid) {
  int   p[2];
  FILE *fp;
  
  if (*type != 'r' && *type != 'w')
    return NULL;
  
  if (pipe(p) < 0)
    return NULL;
  
  if ((*tid = fork()) > 0) { /* then we are the parent */
    if (*type == 'r') {
      close(p[1]);
      fp = fdopen(p[0], type);
    } else {
      close(p[0]);
      fp = fdopen(p[1], type);
    }
    
    return fp;
  } else if (*tid == 0) {  /* we're the child */

    /* make our thread id the process group leader */
    setpgid(0, 0);
    
    if (*type == 'r') {
      fflush(stdout);
      fflush(stderr);
      close(1);
      if (dup(p[1]) < 0)
        perror("dup of write side of pipe failed");
      close(2);
      if (dup(p[1]) < 0)
        perror("dup of write side of pipe failed");
    } else {
      close(0);
      if (dup(p[0]) < 0)
        perror("dup of read side of pipe failed");
    }
    
    close(p[0]); /* close since we dup()'ed what we needed */
    close(p[1]);
    
    execve(args[0], args, NULL);
    
    /* this printf will actually be redirected through the pipe */
    printf("Error: Failed to execute!\n");
    exit(1);
  } else {         /* we're having major problems... */
    close(p[0]);
    close(p[1]);

    /* this printf will actually be redirected through the pipe??? No! */
    printf("Error: Failed to fork!\n");
  }
  
  return NULL;
}

// The thread entry point. It will do the job, send the data to the
// GUI and self destruct when it is done.
static gpointer thread_worker(gt_context_t *context)
{
  FILE *fh;
  GIOStatus status;
  GError *error = NULL;
  gsize length;
  gsize terminator_pos;
  gchar *str_return;

  fh = gt_popen(context, (char**)(context->argv->pdata),"r", &context->pid);
  if(!fh) {
    printf("fail free\n");
    context_free(context);
    //    g_thread_exit(NULL);
    return NULL;
  }

  /* the client is running */
  printf("client inc use_cnt\n");
  context->use_cnt++;

  /* switch to line buffered mode */
  if(setvbuf(fh, NULL, _IOLBF, 0))
    perror("setvbuf(_IOLBF)");
  
  GIOChannel *gh = g_io_channel_unix_new(fileno(fh));

  while( (status = g_io_channel_read_line(gh,
                                          &str_return,
                                          &length,
                                          &terminator_pos,
                                          &error)) == G_IO_STATUS_NORMAL) {
    char *color = NULL;
    if(strstr(str_return, "Saved to "))  color = COLOR_OK;
    if(strcasestr(str_return, "error"))  color = COLOR_ERR;
    
    append_parentf(context, color, str_return);
    g_free(str_return);
  }
  
  g_io_channel_unref(gh);
  pclose(fh);
  append_parentf(context, COLOR_SYSTEM, "Job done!");

  context_free(context);
  
  g_thread_exit(NULL);
  return NULL;
}


static void arg_dsp(gpointer data, gpointer user_data) {
  gt_context_t *context = (gt_context_t*)user_data;
  
  if(data)
    appendf(&context->log, COLOR_SYSTEM, "%s\n", data);
}

static void run(gt_context_t *context) {
  GError *error = NULL;
  char str[8];

  /* build list of arguments to call geotoad */
  context->argv = g_ptr_array_new();
  g_ptr_array_add (context->argv, g_strdup_printf(GEOTOAD));
  g_ascii_dtostr(str, sizeof(str), context->appdata->gt.distance);
  g_ptr_array_add (context->argv, 
             g_strdup_printf("--distanceMax=%s", str));
  g_ptr_array_add (context->argv, 
             g_strdup_printf("--output=%s", context->appdata->gt.filename));
  g_ptr_array_add (context->argv, 
             g_strdup_printf("--password=%s", context->appdata->gt.password));
  g_ptr_array_add (context->argv, 
             g_strdup_printf("--queryType=coord"));
  g_ptr_array_add (context->argv,
             g_strdup_printf("--user=%s", context->appdata->username));

  /* check if we need to add proxy config */
  char *proxy = NULL;

  if(context->appdata->proxy && context->appdata->proxy->host) {
    if(context->appdata->proxy->use_authentication &&
       context->appdata->proxy->authentication_user &&
       context->appdata->proxy->authentication_password)
      proxy = g_strdup_printf("--proxy=http://%s:%s@%s:%d", 
                              context->appdata->proxy->authentication_user,
                              context->appdata->proxy->authentication_password,
                              context->appdata->proxy->host,
                              context->appdata->proxy->port);
    else
      proxy = g_strdup_printf("--proxy=http://%s:%d", 
                              context->appdata->proxy->host,
                              context->appdata->proxy->port);
    
  } else {
    /* use environment settings if preset (for scratchbox) */
    const char *proxy_env = g_getenv("http_proxy");
    if(proxy_env)
      proxy = g_strdup_printf("--proxy=%s", proxy_env);
  }
  
  if(proxy)
    g_ptr_array_add (context->argv, proxy);

  /* convert coordinates into simple ascii format */
  char n = (context->appdata->gt.lat >= 0)?'N':'S';
  char e = (context->appdata->gt.lon >= 0)?'E':'W';
  float lat = fabs(context->appdata->gt.lat);
  float lon = fabs(context->appdata->gt.lon);
  float lat_mint, lat_int, lat_frac = modff(lat, &lat_int);
  float lon_mint, lon_int, lon_frac = modff(lon, &lon_int);
  lat_frac = modff(lat_frac*60.0, &lat_mint);
  lon_frac = modff(lon_frac*60.0, &lon_mint);

  g_ptr_array_add (context->argv, 
           g_strdup_printf("%c%02u %02u.%03u %c%03u %02u.%03u",
           n, (int)lat_int, (int)lat_mint, (int)(lat_frac*1000.0+0.5),
           e, (int)lon_int, (int)lon_mint, (int)(lon_frac*1000.0+0.5)));

  g_ptr_array_add (context->argv, NULL);

  /* show all entries */
  g_ptr_array_foreach(context->argv, arg_dsp, context);

  g_thread_create((GThreadFunc)thread_worker, context, FALSE, &error);
  if (error) {
    appendf(&context->log, COLOR_ERR, "Error: %s\n", error->message);
    g_error_free(error);
  }
}
        
/* show text window and display output of running geotoad */
static void gui_run(gt_context_t *context) {
  GtkWidget *dialog = gtk_dialog_new_with_buttons(_("GeoToad - Run"),
                          GTK_WINDOW(context->appdata->window),
                          GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,
                          GTK_STOCK_CLOSE, GTK_RESPONSE_CLOSE,
                          NULL);

  gtk_window_set_default_size(GTK_WINDOW(dialog), 640, 480);

#ifndef USE_PANNABLE_AREA
  GtkWidget *scrolled_window = gtk_scrolled_window_new(NULL, NULL);
  gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolled_window), 
                                 GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
#else
  GtkWidget *pannable_area = hildon_pannable_area_new();
#endif
  
  context->log.buffer = gtk_text_buffer_new(NULL);

#ifndef USE_HILDON_TEXT_VIEW
  context->log.view = gtk_text_view_new_with_buffer(context->log.buffer);
#else
  context->log.view = hildon_text_view_new();
  hildon_text_view_set_buffer(HILDON_TEXT_VIEW(context->log.view), 
                              context->log.buffer);
#endif

#ifndef USE_PANNABLE_AREA
  gtk_container_add(GTK_CONTAINER(scrolled_window), context->log.view);
  gtk_scrolled_window_set_shadow_type( GTK_SCROLLED_WINDOW(scrolled_window),
                                       GTK_SHADOW_IN);

  gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), 
                     scrolled_window, TRUE, TRUE, 0);
#else
  gtk_container_add(GTK_CONTAINER(pannable_area), context->log.view);
  gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), 
                     pannable_area, TRUE, TRUE, 0);
#endif

  gtk_dialog_set_default_response(GTK_DIALOG(dialog), GTK_RESPONSE_CLOSE);

  gtk_widget_show_all(dialog);

  appendf(&context->log, COLOR_SYSTEM, "Running GeoToad\n");
  run(context);

  gtk_dialog_run(GTK_DIALOG(dialog));

  gtk_widget_destroy(dialog);
}

static void table_attach(GtkWidget *table, GtkWidget *child, int left, int top) {
  gtk_table_attach_defaults(GTK_TABLE(table), child, left, left+1, top, top+1);
}


static gboolean gui_setup(gt_context_t *context) {
  appdata_t *appdata = context->appdata;
  gboolean ok = FALSE;

  /* if no filename has been setup yet, create one */
  if(!appdata->gt.filename && appdata->path) {
    printf("creating path\n");
    appdata->gt.filename = 
      g_strdup_printf("%s/gtoad.gpx", appdata->path);
  }

  if(appdata->gt.filename)
    context->filename = g_strdup(appdata->gt.filename);

  context->dialog = gtk_dialog_new_with_buttons(_("GeoToad - Setup"),
                        GTK_WINDOW(appdata->window),
                        GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT,
                        GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
                        GTK_STOCK_OK,     GTK_RESPONSE_OK,
                        NULL);

  GtkWidget *table = gtk_table_new(5, 2, FALSE);

  /* ------------------- Coordinates ------------------------- */

  table_attach(table, left_label_new(_("Position:")), 0, 0);
  table_attach(table, left_label_new(_("Distance:")), 0, 1);

  /* setup default positions */
  pos_t *refpos = get_pos(appdata);
  if((isnan(appdata->gt.lat) || isnan(appdata->gt.lat)) && refpos) {
    appdata->gt.lat = refpos->lat;
    appdata->gt.lon = refpos->lon;
  }

  GtkWidget *hbox = gtk_hbox_new(FALSE, 0);
  context->lat = lat_entry_new(appdata->gt.lat);
  gtk_box_pack_start_defaults(GTK_BOX(hbox), context->lat);
  context->lon = lon_entry_new(appdata->gt.lon);
  gtk_box_pack_start_defaults(GTK_BOX(hbox), context->lon);
  GtkWidget *popup = preset_coordinate_picker(appdata, context->lat, context->lon);
  gtk_box_pack_start_defaults(GTK_BOX(hbox), popup);
  table_attach(table, hbox, 1, 0);

  float dst = appdata->gt.distance;  // distance is given in kilometers
  if(appdata->imperial) dst /= 1.609344;
  context->dst = dist_entry_new(dst, appdata->imperial);
  table_attach(table, context->dst, 1, 1);

  /* ------------------- Username/Password ------------------------- */
  table_attach(table, left_label_new(_("Username:")), 0, 2);
  table_attach(table, left_label_new(_("Password:")), 0, 3);
  
  context->username = entry_new();
  context->password = entry_new();
  gtk_entry_set_visibility(GTK_ENTRY(context->password), FALSE);

  /* set saved defaults */
  if(appdata->username)
    gtk_entry_set_text(GTK_ENTRY(context->username), 
                       appdata->username);

  if(appdata->gt.password)
    gtk_entry_set_text(GTK_ENTRY(context->password), 
                       appdata->gt.password);

  table_attach(table, context->username, 1, 2);
  table_attach(table, context->password, 1, 3);

  /* ------------------- file name ------------------------- */
  gtk_table_attach_defaults(GTK_TABLE(table), 
            export_file(_("Save GPX file"), &context->filename),
               0, 2, 4, 5);

  /* ---------------------------------------------------------------- */
  gtk_box_pack_start_defaults(GTK_BOX(GTK_DIALOG(context->dialog)->vbox), 
                              table);

  gtk_dialog_set_default_response(GTK_DIALOG(context->dialog), 
                                  GTK_RESPONSE_OK);

  gtk_widget_show_all(context->dialog);

  if(gtk_dialog_run(GTK_DIALOG(context->dialog)) == GTK_RESPONSE_OK) {

    /* parse coordinates */
    appdata->gt.lat = lat_entry_get(context->lat);
    appdata->gt.lon = lon_entry_get(context->lon);

    /* save values */
    if(appdata->username) g_free(appdata->username);
    appdata->username = 
      g_strdup(gtk_entry_get_text(GTK_ENTRY(context->username)));
                                             
    if(appdata->gt.password) g_free(appdata->gt.password);
    appdata->gt.password = 
      g_strdup(gtk_entry_get_text(GTK_ENTRY(context->password)));

    if(appdata->gt.filename) g_free(appdata->gt.filename);
    if(context->filename)
      appdata->gt.filename = g_strdup(context->filename);

    /* get distance in kilometers */
    appdata->gt.distance = dist_entry_get(context->dst, FALSE);


    /* check for valid entries */
    if(isnan(appdata->gt.lat) || isnan(appdata->gt.lon) ||
       isnan(appdata->gt.distance) || !appdata->gt.filename ||
       !appdata->username || !appdata->gt.password) 
      errorf(_("The GeoToad setup is not complete."));
    else
      ok = TRUE;
  }

  gtk_widget_destroy(context->dialog);

  return ok;
}

void geotoad(appdata_t *appdata) {
  if(!geotoad_available()) {
    errorf(_("GeoToad is not installed on this device.\n"
             "You need to install it in order to be able to use it."));
    return;
  }

  gt_context_t *context = g_new0(gt_context_t, 1);
  context->appdata = appdata;
  context->use_cnt++;          // parent still uses this

  context->update_mutex = g_mutex_new();
  context->update_cond = g_cond_new();

  if(gui_setup(context))
    gui_run(context);

  /* continue to process if something has actually been saved */
  if(context->state == GT_STATE_SAVE_FOUND) {
    /* download seems to be successful. Make sure the GUI is */
    /* updated if required */

    gpx_t **gpx = &(appdata->gpx);
    while(*gpx && strcmp((*gpx)->filename, appdata->gt.filename))
      gpx = &(*gpx)->next;

    /* return main GUI to GPX list */
#ifdef USE_BREAD_CRUMB_TRAIL
    while(appdata->cur_gpx)
      hildon_bread_crumb_trail_pop(HILDON_BREAD_CRUMB_TRAIL(appdata->bct));
#elif defined(BCT)
    while(appdata->cur_gpx)
      bct_pop(appdata->bct);
#else
    HildonWindowStack *stack = hildon_window_stack_get_default();
    gint num = hildon_window_stack_size(stack)-1;
    while(num--) {
      GtkWidget *top = hildon_window_stack_peek(stack);
      gtk_widget_destroy(top);
    }
#endif

    /* replace an existing entry or add to end of list */
    if(*gpx) {
      GtkTreeIter iter;
      g_assert(gpxlist_find(appdata, &iter, *gpx));

      gpx_t *next = (*gpx)->next;

      gpx_free(*gpx);
      *gpx = gpx_parse(NULL, appdata->gt.filename, appdata->username);
      (*gpx)->next = next;

      /* update gpxlist */
      gpxlist_set(appdata->gpxstore, &iter, *gpx);

      /* select that row */
      GtkTreeSelection *selection = 
        gtk_tree_view_get_selection(GTK_TREE_VIEW(appdata->gpxview));
      gtk_tree_selection_select_iter(selection, &iter);
      GtkTreePath *path = 
        gtk_tree_model_get_path(GTK_TREE_MODEL(appdata->gpxstore), &iter);
      gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(appdata->gpxview), 
                                   path, NULL, TRUE, 0.0, 0.0);
      gtk_tree_path_free(path);
    } else {
      gpx_t *new = gpx_parse(NULL, appdata->gt.filename, appdata->username);
      if(new) gpxlist_add(appdata, new);
    }
  }

  printf("main context free\n");
  context_free(context);
}

gboolean geotoad_available(void) {
  /* before doing anything make sure geotoad is installed */
  return g_file_test(GEOTOAD, G_FILE_TEST_IS_EXECUTABLE);
}


1	/*
2	* Copyright (C) 2009 Till Harbaum <till@harbaum.org>.
3	*
4	* This file is part of GPXView.
5	*
6	* GPXView is free software: you can redistribute it and/or modify
7	* it under the terms of the GNU General Public License as published by
8	* the Free Software Foundation, either version 3 of the License, or
9	* (at your option) any later version.
10	*
11	* GPXView is distributed in the hope that it will be useful,
12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14	* GNU General Public License for more details.
15	*
16	* You should have received a copy of the GNU General Public License
17	* along with GPXView. If not, see <http://www.gnu.org/licenses/>.
18	*/
19
20	#include "gpxview.h"
21
22	#define __USE_GNU
23	#include <string.h>
24
25	#include <fcntl.h>
26	#include <sys/types.h>
27	#include <sys/wait.h>
28	#include <errno.h>
29	#include <math.h>
30
31	#if defined(USE_MAEMO) && (MAEMO_VERSION_MAJOR >= 5)
32	#include <hildon/hildon-entry.h>
33	#endif
34
35	#define GEOTOAD "/usr/bin/geotoad"
36
37	#define COLOR_ERR "red"
38	#define COLOR_OK "darkgreen"
39	#define COLOR_SYSTEM "darkblue"
40
41	#define BUFFER_SIZE 256
42
43	typedef enum {
44	GT_STATE_ILLEGAL = 0,
45	GT_STATE_STARTED,
46	GT_STATE_PREMATURE_END,
47	GT_STATE_SAVE_FOUND,
48	} gt_state_t;
49
50	typedef struct {
51	appdata_t *appdata;
52
53	GPtrArray *argv;
54	gchar info, color;
55	GMutex *update_mutex;
56	GCond *update_cond;
57
58	gt_state_t state;
59
60	GtkWidget *dialog;
61
62	long pid;
63
64	struct log_s {
65	GtkTextBuffer *buffer;
66	GtkWidget *view;
67	} log;
68
69	GtkWidget username, password;
70	GtkWidget lat, lon, *dst;
71	char *filename;
72
73	int use_cnt;
74
75	} gt_context_t;
76
77	static void arg_free(gpointer data, gpointer user_data) {
78	if(data) g_free(data);
79	}
80
81	static void context_free(gt_context_t *context) {
82	context->use_cnt--;
83
84	if(context->use_cnt > 0)
85	printf("still in use by %d, keeping context\n", context->use_cnt);
86	else {
87	printf("freeing context\n");
88
89	if(context->info) g_free(context->info);
90
91	if(context->argv) {
92	g_ptr_array_foreach(context->argv, arg_free, NULL);
93	g_ptr_array_free (context->argv, TRUE);
94	}
95
96	if(context->filename) g_free(context->filename);
97
98	g_free(context);
99	}
100	}
101
102	static void appendf(struct log_s log, char colname,
103	const char *fmt, ...) {
104	va_list args;
105	va_start( args, fmt );
106	char *buf = g_strdup_vprintf(fmt, args);
107	va_end( args );
108
109	// printf("append: %s", buf);
110
111	GtkTextTag *tag = NULL;
112	if(colname)
113	tag = gtk_text_buffer_create_tag(log->buffer, NULL,
114	"foreground", colname,
115	NULL);
116
117	GtkTextIter end;
118	gtk_text_buffer_get_end_iter(log->buffer, &end);
119	if(tag)
120	gtk_text_buffer_insert_with_tags(log->buffer, &end, buf, -1, tag, NULL);
121	else
122	gtk_text_buffer_insert(log->buffer, &end, buf, -1);
123
124	g_free(buf);
125
126	gtk_text_view_scroll_to_iter(GTK_TEXT_VIEW(log->view),
127	&end, 0.0, TRUE, 1.0, 1.0);
128	}
129
130	// This function receives a requst from a worker thread asking to
131	// update the gui with the required info.
132	gboolean cb_update_job(gt_context_t *context) {
133	if (context->info) {
134
135	/* check if client reports "saved to ..." */
136	if(strstr(context->info, "Saved to "))
137	context->state = GT_STATE_SAVE_FOUND;
138
139	appendf(&context->log, context->color, context->info);
140
141	g_free(context->info);
142	context->info = NULL;
143	}
144
145	// Indicate that the update is done
146	g_mutex_lock(context->update_mutex);
147	g_cond_signal(context->update_cond);
148	g_mutex_unlock(context->update_mutex);
149
150	return FALSE;
151	}
152
153	// A helper function run in the job thread receiving the string that
154	// should be displayed in the textview.
155	void append_parentf(gt_context_t context, char colname,
156	const char *fmt, ...) {
157	va_list args;
158	va_start( args, fmt );
159	context->info = g_strdup_vprintf(fmt, args);
160	va_end( args );
161
162	if(colname)
163	context->color = colname;
164	else
165	context->color = NULL;
166
167	// Lock mutex to make sure that we will receive the condition signal
168	g_mutex_lock(context->update_mutex);
169
170	g_idle_add((GSourceFunc)cb_update_job, context);
171
172	// Wait for cb_update_job to tell me that the update is done
173	g_cond_wait(context->update_cond, context->update_mutex);
174	g_mutex_unlock(context->update_mutex);
175	}
176
177	/* custom version of popen to get access to the pid and to be able */
178	/* to slaughter the child process */
179	static FILE gt_popen(gt_context_t context, char **args,
180	const char type, long tid) {
181	int p[2];
182	FILE *fp;
183
184	if (type != 'r' && type != 'w')
185	return NULL;
186
187	if (pipe(p) < 0)
188	return NULL;
189
190	if ((tid = fork()) > 0) { / then we are the parent */
191	if (*type == 'r') {
192	close(p[1]);
193	fp = fdopen(p[0], type);
194	} else {
195	close(p[0]);
196	fp = fdopen(p[1], type);
197	}
198
199	return fp;
200	} else if (tid == 0) { / we're the child */
201
202	/* make our thread id the process group leader */
203	setpgid(0, 0);
204
205	if (*type == 'r') {
206	fflush(stdout);
207	fflush(stderr);
208	close(1);
209	if (dup(p[1]) < 0)
210	perror("dup of write side of pipe failed");
211	close(2);
212	if (dup(p[1]) < 0)
213	perror("dup of write side of pipe failed");
214	} else {
215	close(0);
216	if (dup(p[0]) < 0)
217	perror("dup of read side of pipe failed");
218	}
219
220	close(p[0]); /* close since we dup()'ed what we needed */
221	close(p[1]);
222
223	execve(args[0], args, NULL);
224
225	/* this printf will actually be redirected through the pipe */
226	printf("Error: Failed to execute!\n");
227	exit(1);
228	} else { /* we're having major problems... */
229	close(p[0]);
230	close(p[1]);
231
232	/* this printf will actually be redirected through the pipe??? No! */
233	printf("Error: Failed to fork!\n");
234	}
235
236	return NULL;
237	}
238
239	// The thread entry point. It will do the job, send the data to the
240	// GUI and self destruct when it is done.
241	static gpointer thread_worker(gt_context_t *context)
242	{
243	FILE *fh;
244	GIOStatus status;
245	GError *error = NULL;
246	gsize length;
247	gsize terminator_pos;
248	gchar *str_return;
249
250	fh = gt_popen(context, (char**)(context->argv->pdata),"r", &context->pid);
251	if(!fh) {
252	printf("fail free\n");
253	context_free(context);
254	// g_thread_exit(NULL);
255	return NULL;
256	}
257
258	/* the client is running */
259	printf("client inc use_cnt\n");
260	context->use_cnt++;
261
262	/* switch to line buffered mode */
263	if(setvbuf(fh, NULL, _IOLBF, 0))
264	perror("setvbuf(_IOLBF)");
265
266	GIOChannel *gh = g_io_channel_unix_new(fileno(fh));
267
268	while( (status = g_io_channel_read_line(gh,
269	&str_return,
270	&length,
271	&terminator_pos,
272	&error)) == G_IO_STATUS_NORMAL) {
273	char *color = NULL;
274	if(strstr(str_return, "Saved to ")) color = COLOR_OK;
275	if(strcasestr(str_return, "error")) color = COLOR_ERR;
276
277	append_parentf(context, color, str_return);
278	g_free(str_return);
279	}
280
281	g_io_channel_unref(gh);
282	pclose(fh);
283	append_parentf(context, COLOR_SYSTEM, "Job done!");
284
285	context_free(context);
286
287	g_thread_exit(NULL);
288	return NULL;
289	}
290
291
292	static void arg_dsp(gpointer data, gpointer user_data) {
293	gt_context_t context = (gt_context_t)user_data;
294
295	if(data)
296	appendf(&context->log, COLOR_SYSTEM, "%s\n", data);
297	}
298
299	static void run(gt_context_t *context) {
300	GError *error = NULL;
301	char str[8];
302
303	/* build list of arguments to call geotoad */
304	context->argv = g_ptr_array_new();
305	g_ptr_array_add (context->argv, g_strdup_printf(GEOTOAD));
306	g_ascii_dtostr(str, sizeof(str), context->appdata->gt.distance);
307	g_ptr_array_add (context->argv,
308	g_strdup_printf("--distanceMax=%s", str));
309	g_ptr_array_add (context->argv,
310	g_strdup_printf("--output=%s", context->appdata->gt.filename));
311	g_ptr_array_add (context->argv,
312	g_strdup_printf("--password=%s", context->appdata->gt.password));
313	g_ptr_array_add (context->argv,
314	g_strdup_printf("--queryType=coord"));
315	g_ptr_array_add (context->argv,
316	g_strdup_printf("--user=%s", context->appdata->username));
317
318	/* check if we need to add proxy config */
319	char *proxy = NULL;
320
321	if(context->appdata->proxy && context->appdata->proxy->host) {
322	if(context->appdata->proxy->use_authentication &&
323	context->appdata->proxy->authentication_user &&
324	context->appdata->proxy->authentication_password)
325	proxy = g_strdup_printf("--proxy=http://%s:%s@%s:%d",
326	context->appdata->proxy->authentication_user,
327	context->appdata->proxy->authentication_password,
328	context->appdata->proxy->host,
329	context->appdata->proxy->port);
330	else
331	proxy = g_strdup_printf("--proxy=http://%s:%d",
332	context->appdata->proxy->host,
333	context->appdata->proxy->port);
334
335	} else {
336	/* use environment settings if preset (for scratchbox) */
337	const char *proxy_env = g_getenv("http_proxy");
338	if(proxy_env)
339	proxy = g_strdup_printf("--proxy=%s", proxy_env);
340	}
341
342	if(proxy)
343	g_ptr_array_add (context->argv, proxy);
344
345	/* convert coordinates into simple ascii format */
346	char n = (context->appdata->gt.lat >= 0)?'N':'S';
347	char e = (context->appdata->gt.lon >= 0)?'E':'W';
348	float lat = fabs(context->appdata->gt.lat);
349	float lon = fabs(context->appdata->gt.lon);
350	float lat_mint, lat_int, lat_frac = modff(lat, &lat_int);
351	float lon_mint, lon_int, lon_frac = modff(lon, &lon_int);
352	lat_frac = modff(lat_frac*60.0, &lat_mint);
353	lon_frac = modff(lon_frac*60.0, &lon_mint);
354
355	g_ptr_array_add (context->argv,
356	g_strdup_printf("%c%02u %02u.%03u %c%03u %02u.%03u",
357	n, (int)lat_int, (int)lat_mint, (int)(lat_frac*1000.0+0.5),
358	e, (int)lon_int, (int)lon_mint, (int)(lon_frac*1000.0+0.5)));
359
360	g_ptr_array_add (context->argv, NULL);
361
362	/* show all entries */
363	g_ptr_array_foreach(context->argv, arg_dsp, context);
364
365	g_thread_create((GThreadFunc)thread_worker, context, FALSE, &error);
366	if (error) {
367	appendf(&context->log, COLOR_ERR, "Error: %s\n", error->message);
368	g_error_free(error);
369	}
370	}
371
372	/* show text window and display output of running geotoad */
373	static void gui_run(gt_context_t *context) {
374	GtkWidget *dialog = gtk_dialog_new_with_buttons(_("GeoToad - Run"),
375	GTK_WINDOW(context->appdata->window),
376	GTK_DIALOG_MODAL \| GTK_DIALOG_DESTROY_WITH_PARENT,
377	GTK_STOCK_CLOSE, GTK_RESPONSE_CLOSE,
378	NULL);
379
380	gtk_window_set_default_size(GTK_WINDOW(dialog), 640, 480);
381
382	#ifndef USE_PANNABLE_AREA
383	GtkWidget *scrolled_window = gtk_scrolled_window_new(NULL, NULL);
384	gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolled_window),
385	GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
386	#else
387	GtkWidget *pannable_area = hildon_pannable_area_new();
388	#endif
389
390	context->log.buffer = gtk_text_buffer_new(NULL);
391
392	#ifndef USE_HILDON_TEXT_VIEW
393	context->log.view = gtk_text_view_new_with_buffer(context->log.buffer);
394	#else
395	context->log.view = hildon_text_view_new();
396	hildon_text_view_set_buffer(HILDON_TEXT_VIEW(context->log.view),
397	context->log.buffer);
398	#endif
399
400	#ifndef USE_PANNABLE_AREA
401	gtk_container_add(GTK_CONTAINER(scrolled_window), context->log.view);
402	gtk_scrolled_window_set_shadow_type( GTK_SCROLLED_WINDOW(scrolled_window),
403	GTK_SHADOW_IN);
404
405	gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox),
406	scrolled_window, TRUE, TRUE, 0);
407	#else
408	gtk_container_add(GTK_CONTAINER(pannable_area), context->log.view);
409	gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox),
410	pannable_area, TRUE, TRUE, 0);
411	#endif
412
413	gtk_dialog_set_default_response(GTK_DIALOG(dialog), GTK_RESPONSE_CLOSE);
414
415	gtk_widget_show_all(dialog);
416
417	appendf(&context->log, COLOR_SYSTEM, "Running GeoToad\n");
418	run(context);
419
420	gtk_dialog_run(GTK_DIALOG(dialog));
421
422	gtk_widget_destroy(dialog);
423	}
424
425	static void table_attach(GtkWidget table, GtkWidget child, int left, int top) {
426	gtk_table_attach_defaults(GTK_TABLE(table), child, left, left+1, top, top+1);
427	}
428
429
430	static gboolean gui_setup(gt_context_t *context) {
431	appdata_t *appdata = context->appdata;
432	gboolean ok = FALSE;
433
434	/* if no filename has been setup yet, create one */
435	if(!appdata->gt.filename && appdata->path) {
436	printf("creating path\n");
437	appdata->gt.filename =
438	g_strdup_printf("%s/gtoad.gpx", appdata->path);
439	}
440
441	if(appdata->gt.filename)
442	context->filename = g_strdup(appdata->gt.filename);
443
444	context->dialog = gtk_dialog_new_with_buttons(_("GeoToad - Setup"),
445	GTK_WINDOW(appdata->window),
446	GTK_DIALOG_MODAL \| GTK_DIALOG_DESTROY_WITH_PARENT,
447	GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
448	GTK_STOCK_OK, GTK_RESPONSE_OK,
449	NULL);
450
451	GtkWidget *table = gtk_table_new(5, 2, FALSE);
452
453	/* ------------------- Coordinates ------------------------- */
454
455	table_attach(table, left_label_new(_("Position:")), 0, 0);
456	table_attach(table, left_label_new(_("Distance:")), 0, 1);
457
458	/* setup default positions */
459	pos_t *refpos = get_pos(appdata);
460	if((isnan(appdata->gt.lat) \|\| isnan(appdata->gt.lat)) && refpos) {
461	appdata->gt.lat = refpos->lat;
462	appdata->gt.lon = refpos->lon;
463	}
464
465	GtkWidget *hbox = gtk_hbox_new(FALSE, 0);
466	context->lat = lat_entry_new(appdata->gt.lat);
467	gtk_box_pack_start_defaults(GTK_BOX(hbox), context->lat);
468	context->lon = lon_entry_new(appdata->gt.lon);
469	gtk_box_pack_start_defaults(GTK_BOX(hbox), context->lon);
470	GtkWidget *popup = preset_coordinate_picker(appdata, context->lat, context->lon);
471	gtk_box_pack_start_defaults(GTK_BOX(hbox), popup);
472	table_attach(table, hbox, 1, 0);
473
474	float dst = appdata->gt.distance; // distance is given in kilometers
475	if(appdata->imperial) dst /= 1.609344;
476	context->dst = dist_entry_new(dst, appdata->imperial);
477	table_attach(table, context->dst, 1, 1);
478
479	/* ------------------- Username/Password ------------------------- */
480	table_attach(table, left_label_new(_("Username:")), 0, 2);
481	table_attach(table, left_label_new(_("Password:")), 0, 3);
482
483	context->username = entry_new();
484	context->password = entry_new();
485	gtk_entry_set_visibility(GTK_ENTRY(context->password), FALSE);
486
487	/* set saved defaults */
488	if(appdata->username)
489	gtk_entry_set_text(GTK_ENTRY(context->username),
490	appdata->username);
491
492	if(appdata->gt.password)
493	gtk_entry_set_text(GTK_ENTRY(context->password),
494	appdata->gt.password);
495
496	table_attach(table, context->username, 1, 2);
497	table_attach(table, context->password, 1, 3);
498
499	/* ------------------- file name ------------------------- */
500	gtk_table_attach_defaults(GTK_TABLE(table),
501	export_file(_("Save GPX file"), &context->filename),
502	0, 2, 4, 5);
503
504	/* ---------------------------------------------------------------- */
505	gtk_box_pack_start_defaults(GTK_BOX(GTK_DIALOG(context->dialog)->vbox),
506	table);
507
508	gtk_dialog_set_default_response(GTK_DIALOG(context->dialog),
509	GTK_RESPONSE_OK);
510
511	gtk_widget_show_all(context->dialog);
512
513	if(gtk_dialog_run(GTK_DIALOG(context->dialog)) == GTK_RESPONSE_OK) {
514
515	/* parse coordinates */
516	appdata->gt.lat = lat_entry_get(context->lat);
517	appdata->gt.lon = lon_entry_get(context->lon);
518
519	/* save values */
520	if(appdata->username) g_free(appdata->username);
521	appdata->username =
522	g_strdup(gtk_entry_get_text(GTK_ENTRY(context->username)));
523
524	if(appdata->gt.password) g_free(appdata->gt.password);
525	appdata->gt.password =
526	g_strdup(gtk_entry_get_text(GTK_ENTRY(context->password)));
527
528	if(appdata->gt.filename) g_free(appdata->gt.filename);
529	if(context->filename)
530	appdata->gt.filename = g_strdup(context->filename);
531
532	/* get distance in kilometers */
533	appdata->gt.distance = dist_entry_get(context->dst, FALSE);
534
535
536	/* check for valid entries */
537	if(isnan(appdata->gt.lat) \|\| isnan(appdata->gt.lon) \|\|
538	isnan(appdata->gt.distance) \|\| !appdata->gt.filename \|\|
539	!appdata->username \|\| !appdata->gt.password)
540	errorf(_("The GeoToad setup is not complete."));
541	else
542	ok = TRUE;
543	}
544
545	gtk_widget_destroy(context->dialog);
546
547	return ok;
548	}
549
550	void geotoad(appdata_t *appdata) {
551	if(!geotoad_available()) {
552	errorf(_("GeoToad is not installed on this device.\n"
553	"You need to install it in order to be able to use it."));
554	return;
555	}
556
557	gt_context_t *context = g_new0(gt_context_t, 1);
558	context->appdata = appdata;
559	context->use_cnt++; // parent still uses this
560
561	context->update_mutex = g_mutex_new();
562	context->update_cond = g_cond_new();
563
564	if(gui_setup(context))
565	gui_run(context);
566
567	/* continue to process if something has actually been saved */
568	if(context->state == GT_STATE_SAVE_FOUND) {
569	/* download seems to be successful. Make sure the GUI is */
570	/* updated if required */
571
572	gpx_t **gpx = &(appdata->gpx);
573	while(gpx && strcmp((gpx)->filename, appdata->gt.filename))
574	gpx = &(*gpx)->next;
575
576	/* return main GUI to GPX list */
577	#ifdef USE_BREAD_CRUMB_TRAIL
578	while(appdata->cur_gpx)
579	hildon_bread_crumb_trail_pop(HILDON_BREAD_CRUMB_TRAIL(appdata->bct));
580	#elif defined(BCT)
581	while(appdata->cur_gpx)
582	bct_pop(appdata->bct);
583	#else
584	HildonWindowStack *stack = hildon_window_stack_get_default();
585	gint num = hildon_window_stack_size(stack)-1;
586	while(num--) {
587	GtkWidget *top = hildon_window_stack_peek(stack);
588	gtk_widget_destroy(top);
589	}
590	#endif
591
592	/* replace an existing entry or add to end of list */
593	if(*gpx) {
594	GtkTreeIter iter;
595	g_assert(gpxlist_find(appdata, &iter, *gpx));
596
597	gpx_t next = (gpx)->next;
598
599	gpx_free(*gpx);
600	*gpx = gpx_parse(NULL, appdata->gt.filename, appdata->username);
601	(*gpx)->next = next;
602
603	/* update gpxlist */
604	gpxlist_set(appdata->gpxstore, &iter, *gpx);
605
606	/* select that row */
607	GtkTreeSelection *selection =
608	gtk_tree_view_get_selection(GTK_TREE_VIEW(appdata->gpxview));
609	gtk_tree_selection_select_iter(selection, &iter);
610	GtkTreePath *path =
611	gtk_tree_model_get_path(GTK_TREE_MODEL(appdata->gpxstore), &iter);
612	gtk_tree_view_scroll_to_cell(GTK_TREE_VIEW(appdata->gpxview),
613	path, NULL, TRUE, 0.0, 0.0);
614	gtk_tree_path_free(path);
615	} else {
616	gpx_t *new = gpx_parse(NULL, appdata->gt.filename, appdata->username);
617	if(new) gpxlist_add(appdata, new);
618	}
619	}
620
621	printf("main context free\n");
622	context_free(context);
623	}
624
625	gboolean geotoad_available(void) {
626	/* before doing anything make sure geotoad is installed */
627	return g_file_test(GEOTOAD, G_FILE_TEST_IS_EXECUTABLE);
628	}
629
630