src/recv.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2001 Hiroyuki Yamamoto
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #endif
  23
  24 #include "defs.h"
  25
  26 #include <glib.h>
  27 #include <stdio.h>
  28 #include <string.h>
  29 #include <unistd.h>
  30 #include <sys/time.h>
  31
  32 #include "intl.h"
  33 #include "recv.h"
  34 #include "socket.h"
  35 #include "utils.h"
  36
  37 static RecvUIFunc       recv_ui_func;
  38 static gpointer         recv_ui_func_data;
  39
  40 gint recv_write_to_file(SockInfo *sock, const gchar *filename)
  41 {
  42         FILE *fp;
  43         gint ret;
  44
  45         g_return_val_if_fail(filename != NULL, -1);
  46
  47         if ((fp = fopen(filename, "wb")) == NULL) {
  48                 FILE_OP_ERROR(filename, "fopen");
  49                 recv_write(sock, NULL);
  50                 return -1;
  51         }
  52
  53         if (change_file_mode_rw(fp, filename) < 0)
  54                 FILE_OP_ERROR(filename, "chmod");
  55
  56         if ((ret = recv_write(sock, fp)) < 0) {
  57                 fclose(fp);
  58                 unlink(filename);
  59                 return ret;
  60         }
  61
  62         if (fclose(fp) == EOF) {
  63                 FILE_OP_ERROR(filename, "fclose");
  64                 unlink(filename);
  65                 return -1;
  66         }
  67
  68         return 0;
  69 }
  70
  71 gint recv_bytes_write_to_file(SockInfo *sock, glong size, const gchar *filename)
  72 {
  73         FILE *fp;
  74         gint ret;
  75
  76         g_return_val_if_fail(filename != NULL, -1);
  77
  78         if ((fp = fopen(filename, "wb")) == NULL) {
  79                 FILE_OP_ERROR(filename, "fopen");
  80                 recv_write(sock, NULL);
  81                 return -1;
  82         }
  83
  84         if (change_file_mode_rw(fp, filename) < 0)
  85                 FILE_OP_ERROR(filename, "chmod");
  86
  87         if ((ret = recv_bytes_write(sock, size, fp)) < 0) {
  88                 fclose(fp);
  89                 unlink(filename);
  90                 return ret;
  91         }
  92
  93         if (fclose(fp) == EOF) {
  94                 FILE_OP_ERROR(filename, "fclose");
  95                 unlink(filename);
  96                 return -1;
  97         }
  98
  99         return 0;
 100 }
 101
 102 gint recv_write(SockInfo *sock, FILE *fp)
 103 {
 104         gchar buf[BUFFSIZE];
 105         gint len;
 106         gint count = 0;
 107         gint bytes = 0;
 108         struct timeval tv_prev, tv_cur;
 109
 110         gettimeofday(&tv_prev, NULL);
 111
 112         for (;;) {
 113                 if (sock_gets(sock, buf, sizeof(buf)) < 0) {
 114                         g_warning("error occurred while retrieving data.\n");
 115                         return -2;
 116                 }
 117
 118                 len = strlen(buf);
 119                 if (len > 1 && buf[0] == '.' && buf[1] == '\r') {
 120                         if (recv_ui_func)
 121                                 recv_ui_func(sock, count, bytes,
 122                                              recv_ui_func_data);
 123                         break;
 124                 }
 125                 count++;
 126                 bytes += len;
 127
 128                 if (recv_ui_func) {
 129                         gettimeofday(&tv_cur, NULL);
 130                         /* if elapsed time from previous update is greater
 131                            than 50msec, update UI */
 132                         if (tv_cur.tv_sec - tv_prev.tv_sec > 0 ||
 133                             tv_cur.tv_usec - tv_prev.tv_usec > UI_REFRESH_INTERVAL) {
 134                                 gboolean ret;
 135                                 ret = recv_ui_func(sock, count, bytes,
 136                                                    recv_ui_func_data);
 137                                 if (ret == FALSE) return -1;
 138                                 gettimeofday(&tv_prev, NULL);
 139                         }
 140                 }
 141
 142                 if (len > 1 && buf[len - 1] == '\n' && buf[len - 2] == '\r') {
 143                         buf[len - 2] = '\n';
 144                         buf[len - 1] = '\0';
 145                         len--;
 146                 }
 147
 148                 if (buf[0] == '.' && buf[1] == '.')
 149                         memmove(buf, buf + 1, len--);
 150
 151                 if (!strncmp(buf, ">From ", 6))
 152                         memmove(buf, buf + 1, len--);
 153
 154                 if (fp && fputs(buf, fp) == EOF) {
 155                         perror("fputs");
 156                         g_warning("Can't write to file.\n");
 157                         fp = NULL;
 158                 }
 159         }
 160
 161         if (!fp) return -1;
 162
 163         return 0;
 164 }
 165
 166 gint recv_bytes_write(SockInfo *sock, glong size, FILE *fp)
 167 {
 168         gchar *buf;
 169         glong count = 0;
 170         gchar *prev, *cur;
 171
 172         buf = g_malloc(size);
 173
 174         do {
 175                 gint read_count;
 176
 177                 read_count = sock_read(sock, buf + count, size - count);
 178                 if (read_count < 0) {
 179                         g_free(buf);
 180                         return -2;
 181                 }
 182                 count += read_count;
 183         } while (count < size);
 184
 185         /* +------------------+----------------+--------------------------+ *
 186          * ^buf               ^prev            ^cur             buf+size-1^ */
 187
 188         prev = buf;
 189         while ((cur = memchr(prev, '\r', size - (prev - buf))) != NULL) {
 190                 if (cur == buf + size - 1) break;
 191
 192                 if (fwrite(prev, sizeof(gchar), cur - prev, fp) == EOF ||
 193                     fwrite("\n", sizeof(gchar), 1, fp) == EOF) {
 194                         perror("fwrite");
 195                         g_warning("Can't write to file.\n");
 196                         g_free(buf);
 197                         return -1;
 198                 }
 199
 200                 if (*(cur + 1) == '\n')
 201                         prev = cur + 2;
 202                 else
 203                         prev = cur + 1;
 204
 205                 if (prev - buf >= size) break;
 206         }
 207
 208         if (prev - buf < size && fwrite(buf, sizeof(gchar),
 209                                         size - (prev - buf), fp) == EOF) {
 210                 perror("fwrite");
 211                 g_warning("Can't write to file.\n");
 212                 g_free(buf);
 213                 return -1;
 214         }
 215
 216         g_free(buf);
 217         return 0;
 218 }
 219
 220 void recv_set_ui_func(RecvUIFunc func, gpointer data)
 221 {
 222         recv_ui_func = func;
 223         recv_ui_func_data = data;
 224 }