webcit/serv_func.c

   1 /*
   2  * $Id$
   3  *
   4  * Handles various types of data transfer operations with the Citadel service.
   5  *
   6  */
   7
   8 #include "webcit.h"
   9 #include "webserver.h"
  10
  11 struct serv_info serv_info;
  12
  13 /*
  14  * get info about the server we've connected to
  15  */
  16 void get_serv_info(char *browser_host, char *user_agent)
  17 {
  18         char buf[SIZ];
  19         int a;
  20
  21         /* Tell the server what kind of client is connecting */
  22         serv_printf("IDEN %d|%d|%d|%s|%s",
  23                 DEVELOPER_ID,
  24                 CLIENT_ID,
  25                 CLIENT_VERSION,
  26                 user_agent,
  27                 browser_host
  28         );
  29         serv_getln(buf, sizeof buf);
  30
  31         /* Tell the server what kind of richtext we prefer */
  32         serv_puts("MSGP text/html|text/plain");
  33         serv_getln(buf, sizeof buf);
  34
  35 #ifdef WEBCIT_WITH_CALENDAR_SERVICE
  36         /* Tell the server that when we save a calendar event, we
  37          * want invitations to be generated by the Citadel server
  38          * instead of by the client.
  39          */
  40         serv_puts("ICAL sgi|1");
  41         serv_getln(buf, sizeof buf);
  42 #endif
  43
  44         /* Now ask the server to tell us a little bit about itself... */
  45         serv_puts("INFO");
  46         serv_getln(buf, sizeof buf);
  47         if (buf[0] != '1')
  48                 return;
  49
  50         a = 0;
  51         while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
  52                 switch (a) {
  53                 case 0:
  54                         serv_info.serv_pid = atoi(buf);
  55                         WC->ctdl_pid = serv_info.serv_pid;
  56                         break;
  57                 case 1:
  58                         safestrncpy(serv_info.serv_nodename, buf, sizeof serv_info.serv_nodename);
  59                         break;
  60                 case 2:
  61                         safestrncpy(serv_info.serv_humannode, buf, sizeof serv_info.serv_humannode);
  62                         break;
  63                 case 3:
  64                         safestrncpy(serv_info.serv_fqdn, buf, sizeof serv_info.serv_fqdn);
  65                         break;
  66                 case 4:
  67                         safestrncpy(serv_info.serv_software, buf, sizeof serv_info.serv_software);
  68                         break;
  69                 case 5:
  70                         serv_info.serv_rev_level = atoi(buf);
  71                         break;
  72                 case 6:
  73                         safestrncpy(serv_info.serv_bbs_city, buf, sizeof serv_info.serv_bbs_city);
  74                         break;
  75                 case 7:
  76                         safestrncpy(serv_info.serv_sysadm, buf, sizeof serv_info.serv_sysadm);
  77                         break;
  78                 case 9:
  79                         safestrncpy(serv_info.serv_moreprompt, buf, sizeof serv_info.serv_moreprompt);
  80                         break;
  81                 case 14:
  82                         serv_info.serv_supports_ldap = atoi(buf);
  83                         break;
  84                 }
  85                 ++a;
  86         }
  87 }
  88
  89
  90
  91 /*
  92  * Function to spit out Citadel variformat text in HTML
  93  * If fp is non-null, it is considered to be the file handle to read the
  94  * text from.  Otherwise, text is read from the server.
  95  */
  96 void fmout(FILE *fp, char *align)
  97 {
  98
  99         int intext = 0;
 100         int bq = 0;
 101         char buf[SIZ];
 102
 103         wprintf("<div align=%s>\n", align);
 104         while (1) {
 105                 if (fp == NULL)
 106                         serv_getln(buf, sizeof buf);
 107                 if (fp != NULL) {
 108                         if (fgets(buf, SIZ, fp) == NULL)
 109                                 safestrncpy(buf, "000", sizeof buf);
 110                         buf[strlen(buf) - 1] = 0;
 111                 }
 112                 if (!strcmp(buf, "000")) {
 113                         if (bq == 1)
 114                                 wprintf("</I>");
 115                         wprintf("</div><br />\n");
 116                         return;
 117                 }
 118                 if ((intext == 1) && (isspace(buf[0]))) {
 119                         wprintf("<br />");
 120                 }
 121                 intext = 1;
 122
 123                 /* Quoted text should be displayed in italics and in a
 124                  * different colour.  This code understands Citadel-style
 125                  * " >" quotes and will convert to <BLOCKQUOTE> tags.
 126                  */
 127                 if ((bq == 0) && (!strncmp(buf, " >", 2))) {
 128                         wprintf("<BLOCKQUOTE>");
 129                         bq = 1;
 130                 } else if ((bq == 1) && (strncmp(buf, " >", 2))) {
 131                         wprintf("</BLOCKQUOTE>");
 132                         bq = 0;
 133                 }
 134                 if ((bq == 1) && (!strncmp(buf, " >", 2))) {
 135                         strcpy(buf, &buf[2]);
 136                 }
 137                 /* Activate embedded URL's */
 138                 url(buf);
 139
 140                 escputs(buf);
 141                 wprintf("\n");
 142         }
 143 }
 144
 145
 146
 147
 148 /*
 149  * Transmit message text (in memory) to the server.
 150  * If convert_to_html is set to 1, the message is converted into something
 151  * which kind of resembles HTML.
 152  */
 153 void text_to_server(char *ptr, int convert_to_html)
 154 {
 155         char buf[SIZ];
 156         char conv[4];
 157         int ch, a, pos;
 158
 159         pos = 0;
 160         buf[0] = 0;
 161
 162         while (ptr[pos] != 0) {
 163                 ch = ptr[pos++];
 164                 if (ch == 10) {
 165                         while ( (isspace(buf[strlen(buf) - 1]))
 166                           && (strlen(buf) > 1) )
 167                                 buf[strlen(buf) - 1] = 0;
 168                         serv_puts(buf);
 169                         buf[0] = 0;
 170                         if (convert_to_html) {
 171                                 strcat(buf, "<br />");
 172                         }
 173                         else {
 174                                 if (ptr[pos] != 0) strcat(buf, " ");
 175                         }
 176                 } else if ((convert_to_html)&&(strchr("#&;`'|*?-~<>^()[]{}$\\", ch) != NULL)) {
 177                         sprintf(conv, "%c", ch);
 178                         stresc(&buf[strlen(buf)], conv, 0, 0);
 179                 } else {
 180                         a = strlen(buf);
 181                         buf[a + 1] = 0;
 182                         buf[a] = ch;
 183                         if ((ch == 32) && (strlen(buf) > 200)) {
 184                                 buf[a] = 0;
 185                                 serv_puts(buf);
 186                                 buf[0] = 0;
 187                         }
 188                         if (strlen(buf) > 250) {
 189                                 serv_puts(buf);
 190                                 buf[0] = 0;
 191                         }
 192                 }
 193         }
 194         serv_puts(buf);
 195
 196 }
 197
 198
 199
 200 /*
 201  * translate server message output to text
 202  * (used for editing room info files and such)
 203  */
 204 void server_to_text()
 205 {
 206         char buf[SIZ];
 207
 208         int count = 0;
 209
 210         while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
 211                 if ((buf[0] == 32) && (count > 0)) {
 212                         wprintf("\n");
 213                 }
 214                 wprintf("%s", buf);
 215                 ++count;
 216         }
 217 }
 218
 219
 220
 221 /*
 222  * Read binary data from server into memory using a series of
 223  * server READ commands.
 224  */
 225 void read_server_binary(char *buffer, size_t total_len) {
 226         char buf[SIZ];
 227         size_t bytes = 0;
 228         size_t thisblock = 0;
 229
 230         memset(buffer, 0, total_len);
 231         while (bytes < total_len) {
 232                 thisblock = 4095;
 233                 if ((total_len - bytes) < thisblock) {
 234                         thisblock = total_len - bytes;
 235                         if (thisblock == 0) return;
 236                 }
 237                 serv_printf("READ %d|%d", (int)bytes, (int)thisblock);
 238                 serv_getln(buf, sizeof buf);
 239                 if (buf[0] == '6') {
 240                         thisblock = (size_t)atoi(&buf[4]);
 241                         if (!WC->connected) return;
 242                         serv_read(&buffer[bytes], thisblock);
 243                         bytes += thisblock;
 244                 }
 245                 else {
 246                         lprintf(3, "Error: %s\n", &buf[4]);
 247                         return;
 248                 }
 249         }
 250 }
 251
 252
 253 /*
 254  * Read text from server, appending to a string buffer until the
 255  * usual 000 terminator is found.  Caller is responsible for freeing
 256  * the returned pointer.
 257  */
 258 char *read_server_text(void) {
 259         char *text = NULL;
 260         size_t bytes_allocated = 0;
 261         size_t bytes_read = 0;
 262         int linelen;
 263         char buf[SIZ];
 264
 265         text = malloc(SIZ);
 266         if (text == NULL) {
 267                 return(NULL);
 268         }
 269         text[0] = 0;
 270         bytes_allocated = SIZ;
 271
 272         while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
 273                 linelen = strlen(buf);
 274                 buf[linelen] = '\n';
 275                 buf[linelen+1] = 0;
 276                 ++linelen;
 277
 278                 if ((bytes_read + linelen) >= (bytes_allocated - 2)) {
 279                         bytes_allocated = 2 * bytes_allocated;
 280                         text = realloc(text, bytes_allocated);
 281                 }
 282
 283                 strcpy(&text[bytes_read], buf);
 284                 bytes_read += linelen;
 285         }
 286
 287         return(text);
 288 }