libjabber/jabber.h

   1 /*
   2  *  This program is free software; you can redistribute it and/or modify
   3  *  it under the terms of the GNU General Public License as published by
   4  *  the Free Software Foundation; either version 2 of the License, or
   5  *  (at your option) any later version.
   6  *
   7  *  This program is distributed in the hope that it will be useful,
   8  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
   9  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10  *  GNU General Public License for more details.
  11  *
  12  *  You should have received a copy of the GNU General Public License
  13  *  along with this program; if not, write to the Free Software
  14  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  15  *
  16  *  Jabber
  17  *  Copyright (C) 1998-1999 The Jabber Team http://jabber.org/
  18  */
  19
  20 #include <string.h>
  21 #include <stdlib.h>
  22 #include <sys/types.h>
  23 #include <stdio.h>
  24 #include <setjmp.h>
  25 #include <sys/stat.h>
  26 #include <fcntl.h>
  27 #include <errno.h>
  28 #include <signal.h>
  29 #include <stdarg.h>
  30 #include <syslog.h>
  31 #include <strings.h>
  32 #include <unistd.h>
  33 #include <sys/socket.h>
  34 #include <netinet/in.h>
  35 #include <netdb.h>
  36 #include <arpa/inet.h>
  37 #include <ctype.h>
  38 #include <time.h>
  39
  40 #include "libxode.h"
  41 #include "connwrap.h"
  42
  43 #ifndef INCL_JABBER_H
  44 #define INCL_JABBER_H
  45
  46 #ifdef __cplusplus
  47 extern "C" {
  48 #endif
  49
  50 /* --------------------------------------------------------- */
  51 /*                                                           */
  52 /* JID structures & constants                                */
  53 /*                                                           */
  54 /* --------------------------------------------------------- */
  55 #define JID_RESOURCE 1
  56 #define JID_USER     2
  57 #define JID_SERVER   4
  58
  59 typedef struct jid_struct
  60 {
  61     pool               p;
  62     char*              resource;
  63     char*              user;
  64     char*              server;
  65     char*              full;
  66     struct jid_struct *next; /* for lists of jids */
  67 } *jid;
  68
  69 jid     jid_new(pool p, char *idstr);          /* Creates a jabber id from the idstr */
  70
  71 void    jid_set(jid id, char *str, int item);  /* Individually sets jid components */
  72 char*   jid_full(jid id);                      /* Builds a string type=user/resource@server from the jid data */
  73 int     jid_cmp(jid a, jid b);                 /* Compares two jid's, returns 0 for perfect match */
  74 int     jid_cmpx(jid a, jid b, int parts);     /* Compares just the parts specified as JID_|JID_ */
  75 jid     jid_append(jid a, jid b);              /* Appending b to a (list), no dups */
  76 xmlnode jid_xres(jid id);                      /* Returns xmlnode representation of the resource?query=string */
  77 xmlnode jid_nodescan(jid id, xmlnode x);       /* Scans the children of the node for a matching jid attribute */
  78
  79
  80 /* --------------------------------------------------------- */
  81 /*                                                           */
  82 /* JPacket structures & constants                            */
  83 /*                                                           */
  84 /* --------------------------------------------------------- */
  85 #define JPACKET_UNKNOWN   0x00
  86 #define JPACKET_MESSAGE   0x01
  87 #define JPACKET_PRESENCE  0x02
  88 #define JPACKET_IQ        0x04
  89 #define JPACKET_S10N      0x08
  90
  91 #define JPACKET__UNKNOWN      0
  92 #define JPACKET__NONE         1
  93 #define JPACKET__ERROR        2
  94 #define JPACKET__CHAT         3
  95 #define JPACKET__GROUPCHAT    4
  96 #define JPACKET__GET          5
  97 #define JPACKET__SET          6
  98 #define JPACKET__RESULT       7
  99 #define JPACKET__SUBSCRIBE    8
 100 #define JPACKET__SUBSCRIBED   9
 101 #define JPACKET__UNSUBSCRIBE  10
 102 #define JPACKET__UNSUBSCRIBED 11
 103 #define JPACKET__AVAILABLE    12
 104 #define JPACKET__UNAVAILABLE  13
 105 #define JPACKET__PROBE        14
 106 #define JPACKET__HEADLINE     15
 107
 108 typedef struct jpacket_struct
 109 {
 110     unsigned char type;
 111     int           subtype;
 112     int           flag;
 113     void*         aux1;
 114     xmlnode       x;
 115     jid           to;
 116     jid           from;
 117     char*         iqns;
 118     xmlnode       iq;
 119     pool          p;
 120 } *jpacket, _jpacket;
 121
 122 jpacket jpacket_new(xmlnode x);     /* Creates a jabber packet from the xmlnode */
 123 jpacket jpacket_reset(jpacket p);   /* Resets the jpacket values based on the xmlnode */
 124 int     jpacket_subtype(jpacket p); /* Returns the subtype value (looks at xmlnode for it) */
 125
 126
 127 /* --------------------------------------------------------- */
 128 /*                                                           */
 129 /* Presence Proxy DB structures & constants                  */
 130 /*                                                           */
 131 /* --------------------------------------------------------- */
 132 typedef struct ppdb_struct
 133 {
 134     jid     id;                /* entry data */
 135     int     pri;
 136     xmlnode x;
 137     struct ppdb_struct* user;  /* linked list for user@server */
 138     pool                p;     /* db-level data */
 139     struct ppdb_struct* next;
 140 } _ppdb, *ppdb;
 141
 142 ppdb    ppdb_insert(ppdb db, jid id, xmlnode x); /* Inserts presence into the proxy */
 143 xmlnode ppdb_primary(ppdb db, jid id);           /* Fetches the matching primary presence for the id */
 144 void    ppdb_free(ppdb db);                      /* Frees the db and all entries */
 145 xmlnode ppdb_get(ppdb db, jid id);               /* Called successively to return each presence xmlnode */
 146                                                  /*   for the id and children, returns NULL at the end */
 147
 148
 149 /* --------------------------------------------------------- */
 150 /*                                                           */
 151 /* Simple Jabber Rate limit functions                        */
 152 /*                                                           */
 153 /* --------------------------------------------------------- */
 154 typedef struct jlimit_struct
 155 {
 156     char *key;
 157     int start;
 158     int points;
 159     int maxt, maxp;
 160     pool p;
 161 } *jlimit, _jlimit;
 162
 163 jlimit jlimit_new(int maxt, int maxp);
 164 void jlimit_free(jlimit r);
 165 int jlimit_check(jlimit r, char *key, int points);
 166
 167
 168 /* --------------------------------------------------------- */
 169 /*                                                           */
 170 /* Error structures & constants                              */
 171 /*                                                           */
 172 /* --------------------------------------------------------- */
 173 typedef struct terror_struct
 174 {
 175     int  code;
 176     char msg[64];
 177 } terror;
 178
 179 #define TERROR_BAD           (terror){400,"Bad Request"}
 180 #define TERROR_AUTH          (terror){401,"Unauthorized"}
 181 #define TERROR_PAY           (terror){402,"Payment Required"}
 182 #define TERROR_FORBIDDEN     (terror){403,"Forbidden"}
 183 #define TERROR_NOTFOUND      (terror){404,"Not Found"}
 184 #define TERROR_NOTALLOWED    (terror){405,"Not Allowed"}
 185 #define TERROR_NOTACCEPTABLE (terror){406,"Not Acceptable"}
 186 #define TERROR_REGISTER      (terror){407,"Registration Required"}
 187 #define TERROR_REQTIMEOUT    (terror){408,"Request Timeout"}
 188 #define TERROR_CONFLICT      (terror){409,"Conflict"}
 189
 190 #define TERROR_INTERNAL   (terror){500,"Internal Server Error"}
 191 #define TERROR_NOTIMPL    (terror){501,"Not Implemented"}
 192 #define TERROR_EXTERNAL   (terror){502,"Remote Server Error"}
 193 #define TERROR_UNAVAIL    (terror){503,"Service Unavailable"}
 194 #define TERROR_EXTTIMEOUT (terror){504,"Remote Server Timeout"}
 195 #define TERROR_DISCONNECTED (terror){510,"Disconnected"}
 196
 197 /* --------------------------------------------------------- */
 198 /*                                                           */
 199 /* Namespace constants                                       */
 200 /*                                                           */
 201 /* --------------------------------------------------------- */
 202 #define NSCHECK(x,n) (j_strcmp(xmlnode_get_attrib(x,"xmlns"),n) == 0)
 203
 204 #define NS_CLIENT    "jabber:client"
 205 #define NS_SERVER    "jabber:server"
 206 #define NS_AUTH      "jabber:iq:auth"
 207 #define NS_REGISTER  "jabber:iq:register"
 208 #define NS_ROSTER    "jabber:iq:roster"
 209 #define NS_OFFLINE   "jabber:x:offline"
 210 #define NS_AGENT     "jabber:iq:agent"
 211 #define NS_AGENTS    "jabber:iq:agents"
 212 #define NS_DELAY     "jabber:x:delay"
 213 #define NS_VERSION   "jabber:iq:version"
 214 #define NS_TIME      "jabber:iq:time"
 215 #define NS_VCARD     "vcard-temp"
 216 #define NS_PRIVATE   "jabber:iq:private"
 217 #define NS_SEARCH    "jabber:iq:search"
 218 #define NS_OOB       "jabber:iq:oob"
 219 #define NS_XOOB      "jabber:x:oob"
 220 #define NS_ADMIN     "jabber:iq:admin"
 221 #define NS_FILTER    "jabber:iq:filter"
 222 #define NS_AUTH_0K   "jabber:iq:auth:0k"
 223
 224
 225 /* --------------------------------------------------------- */
 226 /*                                                           */
 227 /* Message Types                                             */
 228 /*                                                           */
 229 /* --------------------------------------------------------- */
 230 #define TMSG_NORMAL     "normal"
 231 #define TMSG_ERROR      "error"
 232 #define TMSG_CHAT       "chat"
 233 #define TMSG_GROUPCHAT  "groupchat"
 234 #define TMSG_HEADLINE   "headline"
 235
 236
 237 /* --------------------------------------------------------- */
 238 /*                                                           */
 239 /* JUtil functions                                           */
 240 /*                                                           */
 241 /* --------------------------------------------------------- */
 242 xmlnode jutil_presnew(int type, char *to, char *status); /* Create a skeleton presence packet */
 243 xmlnode jutil_iqnew(int type, char *ns);                 /* Create a skeleton iq packet */
 244 xmlnode jutil_msgnew(char *type, char *to, char *subj, char *body);
 245                                                          /* Create a skeleton message packet */
 246 xmlnode jutil_header(char* xmlns, char* server);         /* Create a skeleton stream packet */
 247 int     jutil_priority(xmlnode x);                       /* Determine priority of this packet */
 248 void    jutil_tofrom(xmlnode x);                         /* Swaps to/from fields on a packet */
 249 xmlnode jutil_iqresult(xmlnode x);                       /* Generate a skeleton iq/result, given a iq/query */
 250 char*   jutil_timestamp(void);                           /* Get stringified timestamp */
 251 void    jutil_error(xmlnode x, terror E);                /* Append an <error> node to x */
 252 void    jutil_delay(xmlnode msg, char *reason);          /* Append a delay packet to msg */
 253 char*   jutil_regkey(char *key, char *seed);             /* pass a seed to generate a key, pass the key again to validate (returns it) */
 254
 255
 256 /* --------------------------------------------------------- */
 257 /*                                                           */
 258 /* JConn structures & functions                              */
 259 /*                                                           */
 260 /* --------------------------------------------------------- */
 261 #define JCONN_STATE_OFF       0
 262 #define JCONN_STATE_CONNECTED 1
 263 #define JCONN_STATE_ON        2
 264 #define JCONN_STATE_AUTH      3
 265 #define JCONN_STATE_CONNECTING 4
 266
 267 typedef struct jconn_struct
 268 {
 269     /* Core structure */
 270     pool        p;         /* Memory allocation pool */
 271     int         state;     /* Connection state flag */
 272     int         cw_state;  /* Low level connection state flag */
 273     int         fd;        /* Connection file descriptor */
 274                 char*                           server;    /* The server we'll connect too */
 275     int         port;
 276     int         ssl;
 277     jid         user;      /* User info */
 278     char        *pass;     /* User passwd */
 279
 280     /* Stream stuff */
 281     int         id;        /* id counter for jab_getid() function */
 282     char        idbuf[9];  /* temporary storage for jab_getid() */
 283     char        *sid;      /* stream id from server, for digest auth */
 284     XML_Parser  parser;    /* Parser instance */
 285     xmlnode     current;   /* Current node in parsing instance.. */
 286
 287     /* Event callback ptrs */
 288     void (*on_state)(struct jconn_struct *j, int state);
 289     void (*on_packet)(struct jconn_struct *j, jpacket p);
 290     void (*logger)(struct jconn_struct *j, int inout, const char *p);
 291
 292 } *jconn, jconn_struct;
 293
 294 typedef void (*jconn_state_h)(jconn j, int state);
 295 typedef void (*jconn_packet_h)(jconn j, jpacket p);
 296 typedef void (*jconn_logger)(jconn j, int inout, const char *p);
 297
 298 jconn jab_new(char *user, char *pass, char *server, int port, int ssl);
 299 void jab_delete(jconn j);
 300 void jab_state_handler(jconn j, jconn_state_h h);
 301 void jab_packet_handler(jconn j, jconn_packet_h h);
 302 void jab_logger(jconn j, jconn_logger h);
 303 void jab_start(jconn j);
 304 void jab_stop(jconn j);
 305
 306 int jab_getfd(jconn j);
 307 jid jab_getjid(jconn j);
 308 char *jab_getsid(jconn j);
 309 char *jab_getid(jconn j);
 310
 311 void jab_send(jconn j, xmlnode x);
 312 void jab_send_raw(jconn j, const char *str);
 313 void jab_recv(jconn j);
 314 void jab_poll(jconn j, int timeout);
 315
 316 char *jab_auth(jconn j);
 317 char *jab_reg(jconn j);
 318
 319 #ifdef __cplusplus
 320 }
 321 #endif
 322
 323 #endif  /* INCL_JABBER_H */