libcitadel/lib/vnote.c

   1 /*
   2  * $Id$
   3  *
   4  * vNote implementation for Citadel
   5  *
   6  * Copyright (C) 1999-2007 by the citadel.org development team.
   7  * This code is freely redistributable under the terms of the GNU General
   8  * Public License.  All other rights reserved.
   9  */
  10
  11
  12 #include <stdlib.h>
  13 #include <unistd.h>
  14 #include <stdio.h>
  15 #include <fcntl.h>
  16 #include <signal.h>
  17
  18 #if TIME_WITH_SYS_TIME
  19 # include <sys/time.h>
  20 # include <time.h>
  21 #else
  22 # if HAVE_SYS_TIME_H
  23 #  include <sys/time.h>
  24 # else
  25 #  include <time.h>
  26 # endif
  27 #endif
  28
  29 #include <ctype.h>
  30 #include <string.h>
  31 #include <errno.h>
  32 #include <limits.h>
  33 #include <string.h>
  34 #include <libcitadel.h>
  35
  36
  37 struct vnote *vnote_new(void) {
  38         struct vnote *v;
  39
  40         v = (struct vnote *) malloc(sizeof(struct vnote));
  41         if (v) {
  42                 memset(v, 0, sizeof(struct vnote));
  43                 v->magic = CTDL_VNOTE_MAGIC;
  44                 v->pos_left = rand() % 256;
  45                 v->pos_top = rand() % 256;
  46                 v->pos_width = 200;
  47                 v->pos_height = 150;
  48                 v->color_red = 0xFF;
  49                 v->color_green = 0xFF;
  50                 v->color_blue = 0x00;
  51         }
  52         return v;
  53 }
  54
  55 struct vnote *vnote_new_from_str(char *s) {
  56         struct vnote *v;
  57         char *ptr = s;
  58         char *nexteol;
  59         char *thisline;
  60         int thisline_len;
  61         char *encoded_value;
  62         char *decoded_value;
  63         int is_quoted_printable;
  64         int is_base64;
  65
  66         v = vnote_new();
  67         if (!v) return NULL;
  68
  69         while (*ptr) {          // keep going until we hit a null terminator
  70                 thisline = NULL;
  71                 nexteol = strchr(ptr, '\n');
  72                 if (nexteol) {
  73                         thisline = malloc((nexteol - ptr) + 2);
  74                         strncpy(thisline, ptr, (nexteol-ptr));
  75                         thisline_len = (nexteol-ptr);
  76                         thisline[thisline_len] = 0;
  77                         ptr = nexteol + 1;
  78                 }
  79                 else {
  80                         thisline = strdup(ptr);
  81                         thisline_len = strlen(thisline);
  82                         ptr += thisline_len;
  83                 }
  84
  85                 if (thisline) {
  86                         if (thisline_len > 1) {
  87                                 if (thisline[thisline_len - 1] == '\r') {
  88                                         thisline[thisline_len - 1] = 0;
  89                                         --thisline_len;
  90                                 }
  91                         }
  92
  93                         /* locate the colon separator */
  94                         encoded_value = strchr(thisline, ':');
  95                         if (encoded_value) {
  96                                 *encoded_value++ = 0;
  97
  98                                 /* any qualifiers?  (look for a semicolon) */
  99                                 is_base64 = (int) bmstrcasestr(thisline, "encoding=base64");
 100                                 is_quoted_printable = (int) bmstrcasestr(thisline,
 101                                                                 "encoding=quoted-printable");
 102
 103                                 char *semicolon_pos = strchr(thisline, ';');
 104                                 if (semicolon_pos) {
 105                                         *semicolon_pos = 0;
 106                                 }
 107
 108                                 decoded_value = malloc(thisline_len);
 109                                 if (is_base64) {
 110                                         CtdlDecodeBase64(decoded_value,
 111                                                         encoded_value,
 112                                                         strlen(encoded_value));
 113                                 }
 114                                 else if (is_quoted_printable) {
 115                                         CtdlDecodeQuotedPrintable(decoded_value,
 116                                                         encoded_value,
 117                                                         strlen(encoded_value));
 118                                 }
 119                                 else {
 120                                         strcpy(decoded_value, encoded_value);
 121                                 }
 122
 123                                 if (!strcasecmp(thisline, "UID")) {
 124                                         if (v->uid) free(v->uid);
 125                                         v->uid = decoded_value;
 126                                 }
 127                                 else if (!strcasecmp(thisline, "SUMMARY")) {
 128                                         if (v->summary) free(v->summary);
 129                                         v->summary = decoded_value;
 130                                 }
 131                                 else if ( (!strcasecmp(thisline, "NOTE"))
 132                                      || (!strcasecmp(thisline, "BODY")) ) {
 133                                         if (v->body) free(v->body);
 134                                         v->body = decoded_value;
 135                                 }
 136                                 else if (!strcasecmp(thisline, "X-OUTLOOK-WIDTH")) {
 137                                         v->pos_width = atoi(decoded_value);
 138                                         free(decoded_value);
 139                                 }
 140                                 else if (!strcasecmp(thisline, "X-OUTLOOK-HEIGHT")) {
 141                                         v->pos_height = atoi(decoded_value);
 142                                         free(decoded_value);
 143                                 }
 144                                 else if (!strcasecmp(thisline, "X-OUTLOOK-LEFT")) {
 145                                         v->pos_left = atoi(decoded_value);
 146                                         free(decoded_value);
 147                                 }
 148                                 else if (!strcasecmp(thisline, "X-OUTLOOK-TOP")) {
 149                                         v->pos_top = atoi(decoded_value);
 150                                         free(decoded_value);
 151                                 }
 152                                 else if ( (!strcasecmp(thisline, "X-OUTLOOK-COLOR"))
 153                                      && (strlen(decoded_value) == 7)
 154                                      && (decoded_value[0] == '#') ) {
 155                                         sscanf(&decoded_value[1], "%2x%2x%2x",
 156                                                 &v->color_red,
 157                                                 &v->color_green,
 158                                                 &v->color_blue);
 159                                         free(decoded_value);
 160                                 }
 161                                 else {
 162                                         free(decoded_value);    // throw it away
 163                                 }
 164
 165                                 /* FIXME still need to handle these:
 166                                  * X-OUTLOOK-CREATE-TIME:20070611T204615Z
 167                                  * REV:20070611T204621Z
 168                                  */
 169                         }
 170                         free(thisline);
 171                 }
 172         }
 173
 174         return(v);
 175 }
 176
 177 void vnote_free(struct vnote *v) {
 178         if (!v) return;
 179         if (v->magic != CTDL_VNOTE_MAGIC) return;
 180
 181         if (v->uid) free(v->uid);
 182         if (v->summary) free(v->summary);
 183         if (v->body) free(v->body);
 184
 185         memset(v, 0, sizeof(struct vnote));
 186         free(v);
 187 }
 188
 189
 190 /* helper function for vnote_serialize() */
 191 void vnote_serialize_output_field(char *append_to, char *field, char *label) {
 192
 193         char *mydup;
 194         int output_len = 0;
 195         int is_qp = 0;
 196         char *ptr = field;
 197         unsigned char ch;
 198         int pos = 0;
 199
 200         if (!append_to) return;
 201         if (!field) return;
 202         if (!label) return;
 203
 204         mydup = malloc((strlen(field) * 3) + 1);
 205         if (!mydup) return;
 206         strcpy(mydup, "");
 207
 208         while (ptr[pos] != 0) {
 209                 ch = (unsigned char)(ptr[pos++]);
 210
 211                 if (ch == 9) {
 212                         mydup[output_len++] = ch;
 213                 }
 214                 else if ( (ch >= 32) && (ch <= 60) ) {
 215                         mydup[output_len++] = ch;
 216                 }
 217                 else if ( (ch >= 62) && (ch <= 126) ) {
 218                         mydup[output_len++] = ch;
 219                 }
 220                 else {
 221                         sprintf((char *)&mydup[output_len], "=%02X", ch);
 222                         output_len += 3;
 223                         is_qp = 1;
 224                 }
 225         }
 226         mydup[output_len] = 0;
 227
 228         sprintf(&append_to[strlen(append_to)], "%s%s:%s\r\n",
 229                 label,
 230                 (is_qp ? ";ENCODING=QUOTED-PRINTABLE" : ""),
 231                 mydup);
 232         free(mydup);
 233 }
 234
 235
 236 char *vnote_serialize(struct vnote *v) {
 237         char *s;
 238         int bytes_needed = 0;
 239
 240         if (!v) return NULL;
 241         if (v->magic != CTDL_VNOTE_MAGIC) return NULL;
 242
 243         bytes_needed = 1024;
 244         if (v->summary) bytes_needed += strlen(v->summary);
 245         if (v->body) bytes_needed += strlen(v->body);
 246         s = malloc(bytes_needed);
 247         if (!s) return NULL;
 248
 249         strcpy(s, "");
 250         vnote_serialize_output_field(s, "vnote", "BEGIN");
 251         vnote_serialize_output_field(s, "//Citadel//vNote handler library//EN", "PRODID");
 252         vnote_serialize_output_field(s, "1.1", "VERSION");
 253         vnote_serialize_output_field(s, "PUBLIC", "CLASS");
 254         vnote_serialize_output_field(s, v->uid, "UID");
 255         vnote_serialize_output_field(s, v->summary, "SUMMARY");
 256         vnote_serialize_output_field(s, v->body, "BODY");
 257         vnote_serialize_output_field(s, v->body, "NOTE");
 258         sprintf(&s[strlen(s)], "X-OUTLOOK-COLOR:#%02X%02X%02X\r\n",
 259                 v->color_red, v->color_green, v->color_blue);
 260         sprintf(&s[strlen(s)], "X-OUTLOOK-LEFT:%d\r\n", v->pos_left);
 261         sprintf(&s[strlen(s)], "X-OUTLOOK-TOP:%d\r\n", v->pos_top);
 262         sprintf(&s[strlen(s)], "X-OUTLOOK-WIDTH:%d\r\n", v->pos_width);
 263         sprintf(&s[strlen(s)], "X-OUTLOOK-HEIGHT:%d\r\n", v->pos_height);
 264         vnote_serialize_output_field(s, "vnote", "END");
 265         return(s);
 266 }