src/common/template.c

   1 /*
   2  * Sylpheed templates subsystem
   3  * Copyright (C) 2001 Alexander Barinov
   4  * Copyright (C) 2001-2011 Hiroyuki Yamamoto and the Claws Mail team
   5  *
   6  * This program 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  * This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
  18  *
  19  */
  20
  21 #include "defs.h"
  22
  23 #include <glib.h>
  24 #include <glib/gi18n.h>
  25 #include <stdio.h>
  26 #include <sys/stat.h>
  27 #include <ctype.h>
  28
  29 #include "utils.h"
  30 #include "template.h"
  31 #include "../codeconv.h"
  32
  33 static GSList *template_list;
  34
  35 static Template *template_load(gchar *filename)
  36 {
  37         Template *tmpl;
  38         FILE *fp;
  39         gchar buf[BUFFSIZE];
  40         gint bytes_read;
  41
  42         if ((fp = g_fopen(filename, "rb")) == NULL) {
  43                 FILE_OP_ERROR(filename, "fopen");
  44                 return NULL;
  45         }
  46
  47         tmpl = g_new(Template, 1);
  48         tmpl->load_filename = g_strdup(filename);;
  49         tmpl->name = NULL;
  50         tmpl->subject = NULL;
  51         tmpl->from = NULL;
  52         tmpl->to = NULL;
  53         tmpl->cc = NULL;
  54         tmpl->bcc = NULL;
  55         tmpl->value = NULL;
  56
  57         while (fgets(buf, sizeof(buf), fp) != NULL) {
  58                 if (buf[0] == '\n')
  59                         break;
  60                 else if (!g_ascii_strncasecmp(buf, "Name:", 5))
  61                         tmpl->name = g_strdup(g_strstrip(buf + 5));
  62                 else if (!g_ascii_strncasecmp(buf, "From:", 5))
  63                         tmpl->from = g_strdup(g_strstrip(buf + 5));
  64                 else if (!g_ascii_strncasecmp(buf, "To:", 3))
  65                         tmpl->to = g_strdup(g_strstrip(buf + 3));
  66                 else if (!g_ascii_strncasecmp(buf, "Cc:", 3))
  67                         tmpl->cc = g_strdup(g_strstrip(buf + 3));
  68                 else if (!g_ascii_strncasecmp(buf, "Bcc:", 4))
  69                         tmpl->bcc = g_strdup(g_strstrip(buf + 4));
  70                 else if (!g_ascii_strncasecmp(buf, "Subject:", 8))
  71                         tmpl->subject = g_strdup(g_strstrip(buf + 8));
  72         }
  73
  74         if (!tmpl->name) {
  75                 g_warning("wrong template format\n");
  76                 template_free(tmpl);
  77                 fclose(fp);
  78                 return NULL;
  79         }
  80
  81         if ((bytes_read = fread(buf, 1, sizeof(buf), fp)) == 0) {
  82                 if (ferror(fp)) {
  83                         FILE_OP_ERROR(filename, "fread");
  84                         template_free(tmpl);
  85                         fclose(fp);
  86                         return NULL;
  87                 }
  88         }
  89         fclose(fp);
  90         tmpl->value = g_strndup(buf, bytes_read);
  91
  92         return tmpl;
  93 }
  94
  95 void template_free(Template *tmpl)
  96 {
  97         g_free(tmpl->load_filename);
  98         g_free(tmpl->name);
  99         g_free(tmpl->subject);
 100         g_free(tmpl->from);
 101         g_free(tmpl->to);
 102         g_free(tmpl->cc);
 103         g_free(tmpl->bcc);
 104         g_free(tmpl->value);
 105         g_free(tmpl);
 106 }
 107
 108 static void template_clear_config(GSList *tmpl_list)
 109 {
 110         GSList *cur;
 111         Template *tmpl;
 112
 113         for (cur = tmpl_list; cur != NULL; cur = cur->next) {
 114                 tmpl = (Template *)cur->data;
 115                 template_free(tmpl);
 116         }
 117         g_slist_free(tmpl_list);
 118 }
 119
 120 static gint tmpl_compare(gconstpointer tmpl1, gconstpointer tmpl2)
 121 {
 122         gchar *basename1, *basename2;
 123         long filenum1, filenum2;
 124         gint ret = 0;
 125
 126         if ((Template *)tmpl1 == NULL || (Template *)tmpl2 == NULL)
 127                 return 0;
 128
 129         if (((Template *)tmpl1)->load_filename == NULL || ((Template *)tmpl2)->load_filename == NULL)
 130                 return 0;
 131
 132         basename1 = g_path_get_basename(((Template *)tmpl1)->load_filename);
 133         basename2 = g_path_get_basename(((Template *)tmpl2)->load_filename);
 134         filenum1 = atol(basename1);
 135         filenum2 = atol(basename2);
 136         g_free(basename1);
 137         g_free(basename2);
 138
 139         if (filenum1 == 0 || filenum2 == 0)
 140                 return 0;
 141
 142         if (filenum1 < filenum2)
 143                 ret = -1;
 144         else
 145                 if (filenum1 > filenum2)
 146                         ret = 1;
 147
 148         return ret;
 149 }
 150
 151 GSList *template_read_config(void)
 152 {
 153         const gchar *path;
 154         gchar *filename;
 155         GDir *dir;
 156         const gchar *dir_name;
 157         struct stat s;
 158         Template *tmpl;
 159         GSList *tmpl_list = NULL;
 160
 161         path = get_template_dir();
 162         debug_print("%s:%d reading templates dir %s\n",
 163                     __FILE__, __LINE__, path);
 164
 165         if (!is_dir_exist(path)) {
 166                 if (make_dir(path) < 0)
 167                         return NULL;
 168         }
 169
 170         if ((dir = g_dir_open(path, 0, NULL)) == NULL) {
 171                 g_warning("failed to open directory: %s\n", path);
 172                 return NULL;
 173         }
 174
 175         while ((dir_name = g_dir_read_name(dir)) != NULL) {
 176                 filename = g_strconcat(path, G_DIR_SEPARATOR_S,
 177                                        dir_name, NULL);
 178
 179                 if (g_stat(filename, &s) != 0 || !S_ISREG(s.st_mode) ) {
 180                         debug_print("%s:%d %s is not an ordinary file\n",
 181                                     __FILE__, __LINE__, filename);
 182                         continue;
 183                 }
 184
 185                 tmpl = template_load(filename);
 186                 if (tmpl)
 187                         tmpl_list = g_slist_insert_sorted(tmpl_list, tmpl, tmpl_compare);
 188
 189                 g_free(filename);
 190         }
 191
 192         g_dir_close(dir);
 193
 194         return tmpl_list;
 195 }
 196
 197 #define TRY(func) { \
 198 if (!(func)) \
 199 { \
 200         g_warning("Failed to write template to file\n"); \
 201         if (fp) fclose(fp); \
 202         if (new) claws_unlink(new); \
 203         g_free(new); \
 204         g_free(filename); \
 205         return; \
 206 } \
 207 }
 208
 209 #define TRY_NO_CLOSE(func) { \
 210 if (!(func)) \
 211 { \
 212         g_warning("Failed to write template to file\n"); \
 213         if (new) claws_unlink(new); \
 214         g_free(new); \
 215         g_free(filename); \
 216         return; \
 217 } \
 218 }
 219
 220 static void template_write_config(GSList *tmpl_list)
 221 {
 222         const gchar *path;
 223         GSList *cur;
 224         Template *tmpl;
 225         FILE *fp;
 226         gint tmpl_num;
 227
 228         debug_print("%s:%d writing templates\n", __FILE__, __LINE__);
 229
 230         path = get_template_dir();
 231
 232         if (!is_dir_exist(path)) {
 233                 if (is_file_exist(path)) {
 234                         g_warning("file %s already exists\n", path);
 235                         return;
 236                 }
 237                 if (make_dir(path) < 0)
 238                         return;
 239         }
 240
 241         for (cur = tmpl_list, tmpl_num = 1; cur != NULL;
 242              cur = cur->next, tmpl_num++) {
 243                 gchar *filename, *new = NULL;
 244
 245                 tmpl = cur->data;
 246
 247                 filename = g_strconcat(path, G_DIR_SEPARATOR_S,
 248                                        itos(tmpl_num), NULL);
 249
 250                 if (is_file_exist(filename)) {
 251                         new = g_strconcat(filename, ".new", NULL);
 252                 }
 253
 254                 if ((fp = g_fopen(new?new:filename, "wb")) == NULL) {
 255                         FILE_OP_ERROR(new?new:filename, "fopen");
 256                         g_free(new);
 257                         g_free(filename);
 258                         return;
 259                 }
 260
 261                 TRY(fprintf(fp, "Name: %s\n", tmpl->name) > 0);
 262                 if (tmpl->subject && *tmpl->subject != '\0')
 263                         TRY(fprintf(fp, "Subject: %s\n", tmpl->subject) > 0);
 264                 if (tmpl->from && *tmpl->from != '\0')
 265                         TRY(fprintf(fp, "From: %s\n", tmpl->from) > 0);
 266                 if (tmpl->to && *tmpl->to != '\0')
 267                         TRY(fprintf(fp, "To: %s\n", tmpl->to) > 0);
 268                 if (tmpl->cc && *tmpl->cc != '\0')
 269                         TRY(fprintf(fp, "Cc: %s\n", tmpl->cc) > 0);
 270                 if (tmpl->bcc && *tmpl->bcc != '\0')
 271                         TRY(fprintf(fp, "Bcc: %s\n", tmpl->bcc) > 0);
 272
 273                 TRY(fputs("\n", fp) != EOF);
 274
 275                 if (tmpl->value && *tmpl->value != '\0') {
 276                         TRY(fwrite(tmpl->value, sizeof(gchar), strlen(tmpl->value), fp) == strlen(tmpl->value));
 277                 } else {
 278                         TRY(fwrite("", sizeof(gchar), 1, fp) == 1);
 279                 }
 280                 TRY_NO_CLOSE(fclose(fp) != EOF);
 281
 282                 if (new) {
 283                         claws_unlink(filename);
 284                         rename_force(new, filename);
 285                 }
 286                 g_free(new);
 287                 g_free(filename);
 288         }
 289
 290         /* remove other templates */
 291         while (TRUE) {
 292                 gchar *filename = g_strconcat(path, G_DIR_SEPARATOR_S,
 293                                        itos(tmpl_num), NULL);
 294                 if (is_file_exist(filename)) {
 295                         debug_print("removing old template %d\n", tmpl_num);
 296                         claws_unlink(filename);
 297                         g_free(filename);
 298                 } else {
 299                         g_free(filename);
 300                         break;
 301                 }
 302                 tmpl_num++;
 303         }
 304 }
 305
 306 GSList *template_get_config(void)
 307 {
 308         if (!template_list)
 309                 template_list = template_read_config();
 310
 311         return template_list;
 312 }
 313
 314 void template_set_config(GSList *tmpl_list)
 315 {
 316         template_clear_config(template_list);
 317         template_write_config(tmpl_list);
 318         template_list = tmpl_list;
 319 }