webcit/groupdav_put.c

   1 /*
   2  * $Id$
   3  *
   4  * Handles GroupDAV PUT requests.
   5  *
   6  */
   7
   8 #include "webcit.h"
   9 #include "webserver.h"
  10 #include "groupdav.h"
  11
  12
  13 /*
  14  * This function is for uploading an ENTIRE calendar, not just one
  15  * component.  This would be for webcal:// 'publish' operations, not
  16  * for GroupDAV.
  17  */
  18 void groupdav_put_bigics(char *dav_content, int dav_content_length)
  19 {
  20         char buf[1024];
  21
  22         /*
  23          * Tell the server that when we save a calendar event, we
  24          * do *not* want the server to generate invitations.
  25          */
  26         serv_puts("ICAL sgi|0");
  27         serv_getln(buf, sizeof buf);
  28
  29         serv_puts("ICAL putics");
  30         serv_getln(buf, sizeof buf);
  31         if (buf[0] != '4') {
  32                 hprintf("HTTP/1.1 502 Bad Gateway\r\n");
  33                 groupdav_common_headers();
  34                 hprintf("Content-type: text/plain\r\n");
  35                 wprintf("%s\r\n", &buf[4]);
  36                 end_burst();
  37                 return;
  38         }
  39
  40         serv_write(dav_content, dav_content_length);
  41         serv_printf("\n000");
  42
  43         /* Report success and not much else. */
  44         hprintf("HTTP/1.1 204 No Content\r\n");
  45         lprintf(9, "HTTP/1.1 204 No Content\r\n");
  46         groupdav_common_headers();
  47         hprintf("Content-Length: 0\r\n");
  48 }
  49
  50
  51
  52 /*
  53  * The pathname is always going to take one of two formats:
  54  * /groupdav/room_name/euid     (GroupDAV)
  55  * /groupdav/room_name          (webcal)
  56  */
  57 void groupdav_put(char *dav_pathname, char *dav_ifmatch,
  58                 char *dav_content_type, char *dav_content,
  59                 int dav_content_length
  60 ) {
  61         char dav_roomname[1024];
  62         char dav_uid[1024];
  63         long new_msgnum = (-2L);
  64         long old_msgnum = (-1L);
  65         char buf[SIZ];
  66         int n = 0;
  67
  68         if (num_tokens(dav_pathname, '/') < 3) {
  69                 hprintf("HTTP/1.1 404 not found\r\n");
  70                 groupdav_common_headers();
  71                 hprintf("Content-Type: text/plain\r\n");
  72                 wprintf("The object you requested was not found.\r\n");
  73                 end_burst();
  74                 return;
  75         }
  76
  77         extract_token(dav_roomname, dav_pathname, 2, '/', sizeof dav_roomname);
  78         extract_token(dav_uid, dav_pathname, 3, '/', sizeof dav_uid);
  79         if ((!strcasecmp(dav_uid, "ics")) || (!strcasecmp(dav_uid, "calendar.ics"))) {
  80                 strcpy(dav_uid, "");
  81         }
  82
  83         /* Go to the correct room. */
  84         if (strcasecmp(WC->wc_roomname, dav_roomname)) {
  85                 gotoroom(dav_roomname);
  86         }
  87         if (strcasecmp(WC->wc_roomname, dav_roomname)) {
  88                 hprintf("HTTP/1.1 404 not found\r\n");
  89                 groupdav_common_headers();
  90                 hprintf("Content-Type: text/plain\r\n");
  91                 wprintf("There is no folder called \"%s\" on this server.\r\n",
  92                         dav_roomname);
  93                 end_burst();
  94                 return;
  95         }
  96
  97         /*
  98          * If an HTTP If-Match: header is present, the client is attempting
  99          * to replace an existing item.  We have to check to see if the
 100          * message number associated with the supplied uid matches what the
 101          * client is expecting.  If not, the server probably contains a newer
 102          * version, so we fail...
 103          */
 104         if (!IsEmptyStr(dav_ifmatch)) {
 105                 lprintf(9, "dav_ifmatch: %s\n", dav_ifmatch);
 106                 old_msgnum = locate_message_by_uid(dav_uid);
 107                 lprintf(9, "old_msgnum:  %ld\n", old_msgnum);
 108                 if (atol(dav_ifmatch) != old_msgnum) {
 109                         hprintf("HTTP/1.1 412 Precondition Failed\r\n");
 110                         lprintf(9, "HTTP/1.1 412 Precondition Failed (ifmatch=%ld, old_msgnum=%ld)\r\n",
 111                                 atol(dav_ifmatch), old_msgnum);
 112                         groupdav_common_headers();
 113                         hprintf("Content-Length: 0\r\n");
 114                         end_burst();
 115                         return;
 116                 }
 117         }
 118
 119         /** PUT on the collection itself uploads an ICS of the entire collection.
 120          */
 121         if (!strcasecmp(dav_uid, "")) {
 122                 groupdav_put_bigics(dav_content, dav_content_length);
 123                 return;
 124         }
 125
 126         /*
 127          * We are cleared for upload!  We use the new calling syntax for ENT0
 128          * which allows a confirmation to be sent back to us.  That's how we
 129          * extract the message ID.
 130          */
 131         serv_puts("ENT0 1|||4|||1|");
 132         serv_getln(buf, sizeof buf);
 133         if (buf[0] != '8') {
 134                 hprintf("HTTP/1.1 502 Bad Gateway\r\n");
 135                 groupdav_common_headers();
 136                 hprintf("Content-type: text/plain\r\n");
 137
 138                 wprintf("%s\r\n", &buf[4]);
 139                 end_burst();
 140                 return;
 141         }
 142
 143         /* Send the content to the Citadel server */
 144         serv_printf("Content-type: %s\n\n", dav_content_type);
 145         serv_puts(dav_content);
 146         serv_puts("\n000");
 147
 148         /* Fetch the reply from the Citadel server */
 149         n = 0;
 150         strcpy(dav_uid, "");
 151         while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
 152                 switch(n++) {
 153                         case 0: new_msgnum = atol(buf);
 154                                 break;
 155                         case 1: lprintf(9, "new_msgnum=%ld (%s)\n", new_msgnum, buf);
 156                                 break;
 157                         case 2: strcpy(dav_uid, buf);
 158                                 break;
 159                         default:
 160                                 break;
 161                 }
 162         }
 163
 164         /* Tell the client what happened. */
 165
 166         /* Citadel failed in some way? */
 167         if (new_msgnum < 0L) {
 168                 hprintf("HTTP/1.1 502 Bad Gateway\r\n");
 169                 groupdav_common_headers();
 170                 hprintf("Content-type: text/plain\r\n");
 171                 wprintf("new_msgnum is %ld\r\n"
 172                         "\r\n", new_msgnum);
 173                 end_burst();
 174                 return;
 175         }
 176
 177         /* We created this item for the first time. */
 178         if (old_msgnum < 0L) {
 179                 hprintf("HTTP/1.1 201 Created\r\n");
 180                 lprintf(9, "HTTP/1.1 201 Created\r\n");
 181                 groupdav_common_headers();
 182                 hprintf("etag: \"%ld\"\r\n", new_msgnum);
 183                 hprintf("Content-Length: 0\r\n");
 184                 hprintf("Location: ");
 185                 groupdav_identify_host();
 186                 hprintf("/groupdav/");/////TODO
 187                 urlescputs(dav_roomname);
 188                 char escaped_uid[1024];
 189                 euid_escapize(escaped_uid, dav_uid);
 190                 wprintf("/%s\r\n", escaped_uid);
 191                 return;
 192         }
 193
 194         /* We modified an existing item. */
 195         hprintf("HTTP/1.1 204 No Content\r\n");
 196         lprintf(9, "HTTP/1.1 204 No Content\r\n");
 197         groupdav_common_headers();
 198         hprintf("etag: \"%ld\"\r\n", new_msgnum);
 199         hprintf("Content-Length: 0\r\n");
 200
 201         /* The item we replaced has probably already been deleted by
 202          * the Citadel server, but we'll do this anyway, just in case.
 203          */
 204         serv_printf("DELE %ld", old_msgnum);
 205         serv_getln(buf, sizeof buf);
 206         end_burst();
 207         return;
 208 }