libcitadel/lib/vnote.c

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