129 lines
4.6 KiB
C
129 lines
4.6 KiB
C
/*
|
|
* solanum - an advanced ircd.
|
|
* Copyright (c) 2016 Ariadne Conill <ariadne@dereferenced.org>.
|
|
*
|
|
* Permission to use, copy, modify, and/or distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice is present in all copies.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
|
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
|
|
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
|
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
|
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef SOLANUM__MSGBUF_H
|
|
#define SOLANUM__MSGBUF_H
|
|
|
|
#define MAXPARA (15)
|
|
|
|
/* a key-value structure for each message tag. */
|
|
struct MsgTag {
|
|
const char *key; /* the key of the tag (must be set) */
|
|
const char *value; /* the value of the tag or NULL */
|
|
unsigned int capmask; /* the capability mask this tag belongs to (used only when sending) */
|
|
};
|
|
|
|
struct MsgBuf {
|
|
size_t n_tags; /* the number of tags in the MsgBuf */
|
|
struct MsgTag tags[MAXPARA]; /* the tags themselves, upto MAXPARA tags available */
|
|
|
|
const char *origin; /* the origin of the message (or NULL) */
|
|
const char *target; /* the target of the message (either NULL, or custom defined) */
|
|
const char *cmd; /* the cmd/verb of the message (either NULL, or para[0]) */
|
|
char *endp; /* one past the end of the original array */
|
|
|
|
size_t n_para; /* the number of parameters (always at least 1 if a full message) */
|
|
const char *para[MAXPARA]; /* parameters vector (starting with cmd as para[0]) */
|
|
};
|
|
|
|
struct MsgBuf_str_data {
|
|
const struct MsgBuf *msgbuf;
|
|
unsigned int caps;
|
|
};
|
|
|
|
#define MSGBUF_CACHE_SIZE 32
|
|
|
|
struct MsgBuf_cache_entry {
|
|
unsigned int caps;
|
|
buf_head_t linebuf;
|
|
struct MsgBuf_cache_entry *next;
|
|
};
|
|
|
|
struct MsgBuf_cache {
|
|
const struct MsgBuf *msgbuf;
|
|
char message[DATALEN + 1];
|
|
unsigned int overall_capmask;
|
|
|
|
/* Fixed maximum size linked list, new entries are allocated at the end
|
|
* of the array but are accessed through the "next" pointers.
|
|
*
|
|
* This does not use rb dlink to avoid unnecessary individual allocations.
|
|
*/
|
|
struct MsgBuf_cache_entry entry[MSGBUF_CACHE_SIZE];
|
|
struct MsgBuf_cache_entry *head; /* LRU cache head */
|
|
};
|
|
|
|
/*
|
|
* parse a message into a MsgBuf.
|
|
* returns 0 on success, 1 on error.
|
|
*/
|
|
int msgbuf_parse(struct MsgBuf *msgbuf, char *line);
|
|
|
|
/*
|
|
* Unparse the tail of a msgbuf perfectly, preserving framing details
|
|
* msgbuf->para[n] will reach to the end of the line
|
|
*/
|
|
void msgbuf_reconstruct_tail(struct MsgBuf *msgbuf, size_t n);
|
|
|
|
/*
|
|
* unparse a pure MsgBuf into a buffer.
|
|
* if origin is NULL, me.name will be used.
|
|
* cmd may not be NULL.
|
|
* returns 0 on success, 1 on error.
|
|
*/
|
|
int msgbuf_unparse(char *buf, size_t buflen, const struct MsgBuf *msgbuf, unsigned int capmask);
|
|
|
|
/*
|
|
* unparse a MsgBuf header plus payload into a buffer.
|
|
* if origin is NULL, me.name will be used.
|
|
* cmd may not be NULL.
|
|
* returns 0 on success, 1 on error.
|
|
*/
|
|
int msgbuf_unparse_fmt(char *buf, size_t buflen, const struct MsgBuf *head, unsigned int capmask, const char *fmt, ...) AFP(5, 6);
|
|
int msgbuf_vunparse_fmt(char *buf, size_t buflen, const struct MsgBuf *head, unsigned int capmask, const char *fmt, va_list va);
|
|
|
|
int msgbuf_unparse_linebuf_tags(char *buf, size_t buflen, void *data);
|
|
int msgbuf_unparse_prefix(char *buf, size_t *buflen, const struct MsgBuf *msgbuf, unsigned int capmask);
|
|
|
|
void msgbuf_cache_init(struct MsgBuf_cache *cache, const struct MsgBuf *msgbuf, const rb_strf_t *message);
|
|
void msgbuf_cache_initf(struct MsgBuf_cache *cache, const struct MsgBuf *msgbuf, const rb_strf_t *message, const char *format, ...) AFP(4, 5);
|
|
buf_head_t *msgbuf_cache_get(struct MsgBuf_cache *cache, unsigned int caps);
|
|
void msgbuf_cache_free(struct MsgBuf_cache *cache);
|
|
|
|
static inline void
|
|
msgbuf_init(struct MsgBuf *msgbuf)
|
|
{
|
|
memset(msgbuf, 0, sizeof(*msgbuf));
|
|
}
|
|
|
|
static inline void
|
|
msgbuf_append_tag(struct MsgBuf *msgbuf, const char *key, const char *value, unsigned int capmask)
|
|
{
|
|
if (msgbuf->n_tags < MAXPARA) {
|
|
msgbuf->tags[msgbuf->n_tags].key = key;
|
|
msgbuf->tags[msgbuf->n_tags].value = value;
|
|
msgbuf->tags[msgbuf->n_tags].capmask = capmask;
|
|
msgbuf->n_tags++;
|
|
}
|
|
}
|
|
|
|
#endif
|