libcitadel/lib/vnote.c

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