libcitadel/lib/vnote.c

   1 /*
   2  * vNote implementation for Citadel
   3  *
   4  * Copyright (C) 1999-2007 by the citadel.org development team.
   5  *
   6 // This program is open source software.  Use, duplication, or disclosure
   7 // is subject to the terms of the GNU General Public License, version 3.
   8  */
   9
  10
  11 #include <stdlib.h>
  12 #include <unistd.h>
  13 #include <stdio.h>
  14 #include <fcntl.h>
  15 #include <signal.h>
  16
  17 #if TIME_WITH_SYS_TIME
  18 # include <sys/time.h>
  19 # include <time.h>
  20 #else
  21 # if HAVE_SYS_TIME_H
  22 #  include <sys/time.h>
  23 # else
  24 #  include <time.h>
  25 # endif
  26 #endif
  27
  28 #include <ctype.h>
  29 #include <string.h>
  30 #include <errno.h>
  31 #include <limits.h>
  32 #include <string.h>
  33 #include <libcitadel.h>
  34
  35
  36 struct vnote *vnote_new(void) {
  37         struct vnote *v;
  38
  39         v = (struct vnote *) malloc(sizeof(struct vnote));
  40         if (v) {
  41                 memset(v, 0, sizeof(struct vnote));
  42                 v->magic = CTDL_VNOTE_MAGIC;
  43                 v->pos_left = rand() % 256;
  44                 v->pos_top = rand() % 256;
  45                 v->pos_width = 200;
  46                 v->pos_height = 150;
  47                 v->color_red = 0xFF;
  48                 v->color_green = 0xFF;
  49                 v->color_blue = 0x00;
  50         }
  51         return v;
  52 }
  53
  54 struct vnote *vnote_new_from_str(char *s) {
  55         struct vnote *v;
  56         char *ptr = s;
  57         char *nexteol;
  58         char *thisline;
  59         int thisline_len;
  60         char *encoded_value;
  61         char *decoded_value;
  62         int is_quoted_printable;
  63         int is_base64;
  64
  65         v = vnote_new();
  66         if (!v) return NULL;
  67
  68         while (*ptr) {          // keep going until we hit a null terminator
  69                 thisline = NULL;
  70                 nexteol = strchr(ptr, '\n');
  71                 if (nexteol) {
  72                         thisline_len = (nexteol-ptr);
  73                         thisline = malloc(thisline_len + 2);
  74                         memcpy(thisline, ptr, thisline_len);
  75                         thisline[thisline_len] = '\0';
  76                         ptr = nexteol + 1;
  77                 }
  78                 else {
  79                         thisline = strdup(ptr);
  80                         thisline_len = strlen(thisline);
  81                         ptr += thisline_len;
  82                 }
  83
  84                 if (thisline) {
  85                         if (thisline_len > 1) {
  86                                 if (thisline[thisline_len - 1] == '\r') {
  87                                         thisline[thisline_len - 1] = 0;
  88                                         --thisline_len;
  89                                 }
  90                         }
  91
  92                         /* locate the colon separator */
  93                         encoded_value = strchr(thisline, ':');
  94                         if (encoded_value) {
  95                                 *encoded_value++ = 0;
  96
  97                                 /* any qualifiers?  (look for a semicolon) */
  98                                 is_base64 = bmstrcasestr(thisline, "encoding=base64") ? 1 : 0;
  99                                 is_quoted_printable = bmstrcasestr(thisline, "encoding=quoted-printable") ? 1 : 0;
 100
 101                                 char *semicolon_pos = strchr(thisline, ';');
 102                                 if (semicolon_pos) {
 103                                         *semicolon_pos = 0;
 104                                 }
 105
 106                                 decoded_value = malloc(thisline_len);
 107                                 if (is_base64) {
 108                                         CtdlDecodeBase64(decoded_value,
 109                                                         encoded_value,
 110                                                         strlen(encoded_value));
 111                                 }
 112                                 else if (is_quoted_printable) {
 113                                         CtdlDecodeQuotedPrintable(decoded_value,
 114                                                         encoded_value,
 115                                                         strlen(encoded_value));
 116                                 }
 117                                 else {
 118                                         strcpy(decoded_value, encoded_value);
 119                                 }
 120
 121                                 if (!strcasecmp(thisline, "UID")) {
 122                                         if (v->uid) free(v->uid);
 123                                         v->uid = decoded_value;
 124                                 }
 125                                 else if (!strcasecmp(thisline, "SUMMARY")) {
 126                                         if (v->summary) free(v->summary);
 127                                         v->summary = decoded_value;
 128                                 }
 129                                 else if ( (!strcasecmp(thisline, "NOTE"))
 130                                      || (!strcasecmp(thisline, "BODY")) ) {
 131                                         if (v->body) free(v->body);
 132                                         v->body = decoded_value;
 133                                 }
 134                                 else if (!strcasecmp(thisline, "X-OUTLOOK-WIDTH")) {
 135                                         v->pos_width = atoi(decoded_value);
 136                                         free(decoded_value);
 137                                 }
 138                                 else if (!strcasecmp(thisline, "X-OUTLOOK-HEIGHT")) {
 139                                         v->pos_height = atoi(decoded_value);
 140                                         free(decoded_value);
 141                                 }
 142                                 else if (!strcasecmp(thisline, "X-OUTLOOK-LEFT")) {
 143                                         v->pos_left = atoi(decoded_value);
 144                                         free(decoded_value);
 145                                 }
 146                                 else if (!strcasecmp(thisline, "X-OUTLOOK-TOP")) {
 147                                         v->pos_top = atoi(decoded_value);
 148                                         free(decoded_value);
 149                                 }
 150                                 else if ( (!strcasecmp(thisline, "X-OUTLOOK-COLOR"))
 151                                      && (strlen(decoded_value) == 7)
 152                                      && (decoded_value[0] == '#') ) {
 153                                         sscanf(&decoded_value[1], "%2x%2x%2x",
 154                                                 &v->color_red,
 155                                                 &v->color_green,
 156                                                 &v->color_blue);
 157                                         free(decoded_value);
 158                                 }
 159                                 else {
 160                                         free(decoded_value);    // throw it away
 161                                 }
 162
 163                                 /* FIXME still need to handle these:
 164                                  * X-OUTLOOK-CREATE-TIME:20070611T204615Z
 165                                  * REV:20070611T204621Z
 166                                  */
 167                         }
 168                         free(thisline);
 169                 }
 170         }
 171
 172         return(v);
 173 }
 174
 175 void vnote_free(struct vnote *v) {
 176         if (!v) return;
 177         if (v->magic != CTDL_VNOTE_MAGIC) return;
 178
 179         if (v->uid) free(v->uid);
 180         if (v->summary) free(v->summary);
 181         if (v->body) free(v->body);
 182
 183         memset(v, 0, sizeof(struct vnote));
 184         free(v);
 185 }
 186
 187
 188 /* helper function for vnote_serialize() */
 189 void vnote_serialize_output_field(char *append_to, char *field, char *label) {
 190
 191         char *mydup;
 192         int output_len = 0;
 193         int is_qp = 0;
 194         char *ptr = field;
 195         unsigned char ch;
 196         int pos = 0;
 197
 198         if (!append_to) return;
 199         if (!field) return;
 200         if (!label) return;
 201
 202         mydup = malloc((strlen(field) * 3) + 1);
 203         if (!mydup) return;
 204         *mydup = '\0';
 205
 206         while (ptr[pos] != 0) {
 207                 ch = (unsigned char)(ptr[pos++]);
 208
 209                 if (ch == 9) {
 210                         mydup[output_len++] = ch;
 211                 }
 212                 else if ( (ch >= 32) && (ch <= 60) ) {
 213                         mydup[output_len++] = ch;
 214                 }
 215                 else if ( (ch >= 62) && (ch <= 126) ) {
 216                         mydup[output_len++] = ch;
 217                 }
 218                 else {
 219                         sprintf((char *)&mydup[output_len], "=%02X", ch);
 220                         output_len += 3;
 221                         is_qp = 1;
 222                 }
 223         }
 224         mydup[output_len] = 0;
 225
 226         sprintf(&append_to[strlen(append_to)], "%s%s:%s\r\n",
 227                 label,
 228                 (is_qp ? ";ENCODING=QUOTED-PRINTABLE" : ""),
 229                 mydup);
 230         free(mydup);
 231 }
 232
 233
 234 char *vnote_serialize(struct vnote *v) {
 235         char *s;
 236         int bytes_needed = 0;
 237
 238         if (!v) return NULL;
 239         if (v->magic != CTDL_VNOTE_MAGIC) return NULL;
 240
 241         bytes_needed = 1024;
 242         if (v->summary) bytes_needed += strlen(v->summary);
 243         if (v->body) bytes_needed += strlen(v->body);
 244         s = malloc(bytes_needed);
 245         if (!s) return NULL;
 246
 247         *s = '\0';
 248         vnote_serialize_output_field(s, "vnote", "BEGIN");
 249         vnote_serialize_output_field(s, "//Citadel//vNote handler library//EN", "PRODID");
 250         vnote_serialize_output_field(s, "1.1", "VERSION");
 251         vnote_serialize_output_field(s, "PUBLIC", "CLASS");
 252         vnote_serialize_output_field(s, v->uid, "UID");
 253         vnote_serialize_output_field(s, v->summary, "SUMMARY");
 254         vnote_serialize_output_field(s, v->body, "BODY");
 255         vnote_serialize_output_field(s, v->body, "NOTE");
 256         sprintf(&s[strlen(s)], "X-OUTLOOK-COLOR:#%02X%02X%02X\r\n",
 257                 v->color_red, v->color_green, v->color_blue);
 258         sprintf(&s[strlen(s)], "X-OUTLOOK-LEFT:%d\r\n", v->pos_left);
 259         sprintf(&s[strlen(s)], "X-OUTLOOK-TOP:%d\r\n", v->pos_top);
 260         sprintf(&s[strlen(s)], "X-OUTLOOK-WIDTH:%d\r\n", v->pos_width);
 261         sprintf(&s[strlen(s)], "X-OUTLOOK-HEIGHT:%d\r\n", v->pos_height);
 262         vnote_serialize_output_field(s, "vnote", "END");
 263         return(s);
 264 }