citadel/modules/image/serv_image.c

   1 /*
   2  * Copyright (c) 1987-2016 by the citadel.org team
   3  *
   4  * This program is open source software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14
  15 #include "ctdl_module.h"
  16 #include "config.h"
  17
  18 #include <sys/types.h>
  19 #include <sys/stat.h>
  20 #include <dirent.h>
  21
  22
  23
  24 /*
  25  * DownLoad User Image (see their avatar or photo or whatever)
  26  * If this command succeeds, it follows the same protocol as the DLAT command.
  27  */
  28 void cmd_dlui(char *cmdbuf)
  29 {
  30         struct ctdluser ruser;
  31         char buf[SIZ];
  32
  33         if (CtdlAccessCheck(ac_logged_in_or_guest)) return;
  34         extract_token(buf, cmdbuf, 0, '|', sizeof buf);
  35         if (CtdlGetUser(&ruser, buf) != 0) {
  36                 cprintf("%d No such user.\n", ERROR + NO_SUCH_USER);
  37                 return;
  38         }
  39         if (ruser.msgnum_pic < 1) {
  40                 cprintf("%d No image found.\n", ERROR + FILE_NOT_FOUND);
  41                 return;
  42         }
  43
  44         struct CtdlMessage *msg = CtdlFetchMessage(ruser.msgnum_pic, 1, 1);
  45         if (msg != NULL) {
  46                 // The call to CtdlOutputPreLoadedMsg() with MT_SPEW_SECTION will cause the DLUI command
  47                 // to have the same output format as the DLAT command, because it calls the same code.
  48                 // For example: 600 402132|-1||image/gif|
  49                 safestrncpy(CC->download_desired_section, "1", sizeof CC->download_desired_section);
  50                 CtdlOutputPreLoadedMsg(msg, MT_SPEW_SECTION, HEADERS_NONE, 1, 0, 0);
  51                 CM_Free(msg);
  52         }
  53         else {
  54                 cprintf("%d No image found.\n", ERROR + MESSAGE_NOT_FOUND);
  55                 return;
  56         }
  57 }
  58
  59
  60 /*
  61  * DownLoad User Image (avatar or photo or whatever)
  62  */
  63 void cmd_ului(char *cmdbuf)
  64 {
  65         if (CtdlAccessCheck(ac_logged_in_or_guest)) return;
  66
  67         cprintf("500 FIXME not finished\n");
  68 }
  69
  70
  71 /*
  72  * Import function called by import_old_userpic_files() for a single user
  73  */
  74 void import_one_userpic_file(char *username, long usernum, char *path)
  75 {
  76         syslog(LOG_DEBUG, "Import legacy userpic for %s, usernum=%ld, filename=%s", username, usernum, path);
  77
  78         FILE *fp = fopen(path, "r");
  79         if (!fp) return;
  80
  81         fseek(fp, 0, SEEK_END);
  82         long data_length = ftell(fp);
  83
  84         if (data_length >= 1) {
  85                 rewind(fp);
  86                 char *unencoded_data = malloc(data_length);
  87                 if (unencoded_data) {
  88                         fread(unencoded_data, data_length, 1, fp);
  89                         char *encoded_data = malloc((data_length * 2) + 100);
  90                         if (encoded_data) {
  91                                 // FIXME try to guess the content-type based on the filename, don't assume GIF
  92                                 sprintf(encoded_data, "Content-type: image/gif\nContent-transfer-encoding: base64\n\n");
  93                                 CtdlEncodeBase64(&encoded_data[strlen(encoded_data)], unencoded_data, data_length, 1);
  94
  95                                 char userconfigroomname[ROOMNAMELEN];
  96                                 struct ctdluser usbuf;
  97
  98                                 if (CtdlGetUser(&usbuf, username) == 0) {       // no need to lock it , we are still initializing
  99                                         long old_msgnum = usbuf.msgnum_pic;
 100                                         CtdlMailboxName(userconfigroomname, sizeof userconfigroomname, &usbuf, USERCONFIGROOM);
 101                                         long new_msgnum = quickie_message("Citadel", NULL, NULL, userconfigroomname, encoded_data, FMT_RFC822, "Photo imported from file");
 102                                         syslog(LOG_DEBUG, "Message %ld is now the profile for %s", new_msgnum, username);
 103                                         usbuf.msgnum_pic = new_msgnum;
 104                                         CtdlPutUser(&usbuf);
 105                                         unlink(path);                           // delete the old file , it's in the database now
 106                                         if (old_msgnum > 0) {
 107                                                 syslog(LOG_DEBUG, "Deleting old message %ld from %s", old_msgnum, userconfigroomname);
 108                                                 CtdlDeleteMessages(userconfigroomname, &old_msgnum, 1, "");
 109                                         }
 110                                 }
 111                                 free(encoded_data);
 112                         }
 113                         free(unencoded_data);
 114                 }
 115         }
 116         fclose(fp);
 117 }
 118
 119
 120 /*
 121  * Look for old-format "userpic" files and import them into the message base
 122  */
 123 void import_old_userpic_files(void)
 124 {
 125         DIR *filedir = NULL;
 126         struct dirent *filedir_entry;
 127         struct dirent *d;
 128         size_t d_namelen;
 129         struct ctdluser usbuf;
 130         long usernum = 0;
 131         int d_type = 0;
 132         struct stat s;
 133         char path[PATH_MAX];
 134
 135
 136         syslog(LOG_DEBUG, "Importing old style userpic files into the message base");
 137         d = (struct dirent *)malloc(offsetof(struct dirent, d_name) + PATH_MAX + 2);
 138         if (d == NULL) {
 139                 return;
 140         }
 141
 142         filedir = opendir (ctdl_usrpic_dir);
 143         if (filedir == NULL) {
 144                 free(d);
 145                 return;
 146         }
 147         while ((readdir_r(filedir, d, &filedir_entry) == 0) &&
 148                (filedir_entry != NULL))
 149         {
 150 #ifdef _DIRENT_HAVE_D_NAMLEN
 151                 d_namelen = filedir_entry->d_namlen;
 152
 153 #else
 154                 d_namelen = strlen(filedir_entry->d_name);
 155 #endif
 156
 157 #ifdef _DIRENT_HAVE_D_TYPE
 158                 d_type = filedir_entry->d_type;
 159 #else
 160
 161 #ifndef DT_UNKNOWN
 162 #define DT_UNKNOWN     0
 163 #define DT_DIR         4
 164 #define DT_REG         8
 165 #define DT_LNK         10
 166
 167 #define IFTODT(mode)   (((mode) & 0170000) >> 12)
 168 #define DTTOIF(dirtype)        ((dirtype) << 12)
 169 #endif
 170                 d_type = DT_UNKNOWN;
 171 #endif
 172                 if ((d_namelen == 1) &&
 173                     (filedir_entry->d_name[0] == '.'))
 174                         continue;
 175
 176                 if ((d_namelen == 2) &&
 177                     (filedir_entry->d_name[0] == '.') &&
 178                     (filedir_entry->d_name[1] == '.'))
 179                         continue;
 180
 181                 snprintf(path, PATH_MAX, "%s/%s", ctdl_usrpic_dir, filedir_entry->d_name);
 182                 if (d_type == DT_UNKNOWN) {
 183                         if (lstat(path, &s) == 0) {
 184                                 d_type = IFTODT(s.st_mode);
 185                         }
 186                 }
 187                 switch (d_type)
 188                 {
 189                 case DT_DIR:
 190                         break;
 191                 case DT_LNK:
 192                 case DT_REG:
 193                         usernum = atol(filedir_entry->d_name);
 194                         if (CtdlGetUserByNumber(&usbuf, usernum) == 0) {
 195                                 import_one_userpic_file(usbuf.fullname, usernum, path);
 196                         }
 197                 }
 198         }
 199         free(d);
 200         closedir(filedir);
 201         rmdir(ctdl_usrpic_dir);
 202 }
 203
 204
 205
 206 CTDL_MODULE_INIT(image)
 207 {
 208         if (!threading)
 209         {
 210                 import_old_userpic_files();
 211                 CtdlRegisterProtoHook(cmd_dlui, "DLUI", "DownLoad User Image");
 212                 CtdlRegisterProtoHook(cmd_ului, "ULUI", "UpLoad User Image");
 213         }
 214         /* return our module name for the log */
 215         return "image";
 216 }