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Date:: Thu Dec 16 09:59:51 2021 UTC
Message:: implement Tread against directories To do so it was needed to modify the np_* functions so they take an explicit evbuffer.
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  1 8d1b399b 2021-07-22 op /*
  2 8d1b399b 2021-07-22 op  * Copyright (c) 2021 Omar Polo <op@omarpolo.com>
  3 8d1b399b 2021-07-22 op  *
  4 8d1b399b 2021-07-22 op  * Permission to use, copy, modify, and distribute this software for any
  5 8d1b399b 2021-07-22 op  * purpose with or without fee is hereby granted, provided that the above
  6 8d1b399b 2021-07-22 op  * copyright notice and this permission notice appear in all copies.
  7 8d1b399b 2021-07-22 op  *
  8 8d1b399b 2021-07-22 op  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  9 8d1b399b 2021-07-22 op  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 10 8d1b399b 2021-07-22 op  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 11 8d1b399b 2021-07-22 op  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 12 8d1b399b 2021-07-22 op  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 13 8d1b399b 2021-07-22 op  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 14 8d1b399b 2021-07-22 op  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 15 8d1b399b 2021-07-22 op  */
 16 8d1b399b 2021-07-22 op 
 17 8d1b399b 2021-07-22 op #ifndef KAMID_H
 18 8d1b399b 2021-07-22 op #define KAMID_H
 19 8d1b399b 2021-07-22 op 
 20 8d1b399b 2021-07-22 op #include "compat.h"
 21 8d1b399b 2021-07-22 op 
 22 8d1b399b 2021-07-22 op #include <limits.h>
 23 8d1b399b 2021-07-22 op #include <stdint.h>
 24 8d1b399b 2021-07-22 op #include <tls.h>
 25 8d1b399b 2021-07-22 op 
 26 8d1b399b 2021-07-22 op /* TODO: make these customizable */
 27 8d1b399b 2021-07-22 op #define KD_CONF_FILE		"/etc/kamid.conf"
 28 8d1b399b 2021-07-22 op #define KD_USER			"_kamid"
 29 8d1b399b 2021-07-22 op #define KD_SOCKET		"/var/run/kamid.sock"
 30 8d1b399b 2021-07-22 op 
 31 8d1b399b 2021-07-22 op #define IMSG_DATA_SIZE(imsg)	((imsg).hdr.len - IMSG_HEADER_SIZE)
 32 8d1b399b 2021-07-22 op 
 33 36da10d7 2021-07-26 op #define MIN(a, b) ((a) < (b) ? (a) : (b))
 34 36da10d7 2021-07-26 op 
 35 8d1b399b 2021-07-22 op struct imsgev {
 36 8d1b399b 2021-07-22 op 	struct imsgbuf	 ibuf;
 37 8d1b399b 2021-07-22 op 	void		(*handler)(int, short, void *);
 38 8d1b399b 2021-07-22 op 	struct event	 ev;
 39 8d1b399b 2021-07-22 op 	short		 events;
 40 8d1b399b 2021-07-22 op };
 41 8d1b399b 2021-07-22 op 
 42 8d1b399b 2021-07-22 op enum imsg_type {
 43 8d1b399b 2021-07-22 op 	IMSG_NONE,
 44 8d1b399b 2021-07-22 op 	IMSG_CTL_LOG_VERBOSE,
 45 8d1b399b 2021-07-22 op 	IMSG_CTL_RELOAD,
 46 8d1b399b 2021-07-22 op 	IMSG_CONTROLFD,
 47 8d1b399b 2021-07-22 op 	IMSG_STARTUP,
 48 8d1b399b 2021-07-22 op 	IMSG_RECONF_CONF,
 49 8d1b399b 2021-07-22 op 	IMSG_RECONF_PKI,
 50 8d1b399b 2021-07-22 op 	IMSG_RECONF_PKI_CERT,
 51 8d1b399b 2021-07-22 op 	IMSG_RECONF_PKI_KEY,
 52 8d1b399b 2021-07-22 op 	IMSG_RECONF_LISTEN,
 53 8d1b399b 2021-07-22 op 	IMSG_RECONF_END,
 54 8d1b399b 2021-07-22 op 	IMSG_AUTH,
 55 8d1b399b 2021-07-22 op 	IMSG_AUTH_DIR,
 56 8d1b399b 2021-07-22 op 	IMSG_AUTH_TLS,
 57 8d1b399b 2021-07-22 op 	IMSG_CONN_GONE,
 58 8d1b399b 2021-07-22 op 	IMSG_BUF,
 59 5c485996 2021-07-28 op 	IMSG_MSIZE,
 60 5c485996 2021-07-28 op 	IMSG_CLOSE,
 61 8d1b399b 2021-07-22 op };
 62 8d1b399b 2021-07-22 op 
 63 8d1b399b 2021-07-22 op struct kd_options_conf {
 64 8d1b399b 2021-07-22 op 	/* ... */
 65 8d1b399b 2021-07-22 op };
 66 8d1b399b 2021-07-22 op 
 67 8d1b399b 2021-07-22 op enum table_type {
 68 8d1b399b 2021-07-22 op 	T_NONE		= 0,
 69 8d1b399b 2021-07-22 op 	T_HASH		= 0x01,
 70 8d1b399b 2021-07-22 op };
 71 8d1b399b 2021-07-22 op 
 72 8d1b399b 2021-07-22 op struct table {
 73 8d1b399b 2021-07-22 op 	char			 t_name[LINE_MAX];
 74 8d1b399b 2021-07-22 op 	enum table_type		 t_type;
 75 8d1b399b 2021-07-22 op 	char			 t_path[PATH_MAX];
 76 8d1b399b 2021-07-22 op 	void			*t_handle;
 77 8d1b399b 2021-07-22 op 	struct table_backend	*t_backend;
 78 8d1b399b 2021-07-22 op };
 79 8d1b399b 2021-07-22 op 
 80 8d1b399b 2021-07-22 op struct table_backend {
 81 8d1b399b 2021-07-22 op 	const char	*name;
 82 8d1b399b 2021-07-22 op 	int		(*open)(struct table *);
 83 8d1b399b 2021-07-22 op 	int		(*add)(struct table *, const char *, const char *);
 84 8d1b399b 2021-07-22 op 	int		(*lookup)(struct table *, const char *, char **);
 85 8d1b399b 2021-07-22 op 	void		(*close)(struct table *);
 86 8d1b399b 2021-07-22 op };
 87 8d1b399b 2021-07-22 op 
 88 8d1b399b 2021-07-22 op /* table_static.c */
 89 8d1b399b 2021-07-22 op extern struct table_backend table_static;
 90 8d1b399b 2021-07-22 op 
 91 fccfa871 2021-07-23 op #define L_NONE	0x0
 92 fccfa871 2021-07-23 op #define L_TLS	0x1
 93 8d1b399b 2021-07-22 op struct kd_listen_conf {
 94 c25feded 2021-07-26 op 	STAILQ_ENTRY(kd_listen_conf)	 entry;
 95 8d1b399b 2021-07-22 op 	uint32_t			 id;
 96 fccfa871 2021-07-23 op 	uint32_t			 flags;
 97 8d1b399b 2021-07-22 op 	int				 fd;
 98 8d1b399b 2021-07-22 op 	char				 iface[LINE_MAX];
 99 8d1b399b 2021-07-22 op 	uint16_t			 port;
100 8d1b399b 2021-07-22 op 	struct table			*auth_table;
101 8d1b399b 2021-07-22 op 	char				 pki[LINE_MAX];
102 8d1b399b 2021-07-22 op 	struct event			 ev;
103 8d1b399b 2021-07-22 op 	struct tls			*ctx;
104 8d1b399b 2021-07-22 op };
105 8d1b399b 2021-07-22 op 
106 8d1b399b 2021-07-22 op struct kd_pki_conf {
107 c25feded 2021-07-26 op 	STAILQ_ENTRY(kd_pki_conf)	 entry;
108 8d1b399b 2021-07-22 op 	char				 name[LINE_MAX];
109 8d1b399b 2021-07-22 op 	uint8_t				*cert;
110 8d1b399b 2021-07-22 op 	size_t				 certlen;
111 8d1b399b 2021-07-22 op 	uint8_t				*key;
112 8d1b399b 2021-07-22 op 	size_t				 keylen;
113 8d1b399b 2021-07-22 op 	struct tls_config		*tlsconf;
114 8d1b399b 2021-07-22 op };
115 8d1b399b 2021-07-22 op 
116 8d1b399b 2021-07-22 op struct kd_tables_conf {
117 c25feded 2021-07-26 op 	STAILQ_ENTRY(kd_tables_conf)	 entry;
118 8d1b399b 2021-07-22 op 	struct table			*table;
119 8d1b399b 2021-07-22 op };
120 8d1b399b 2021-07-22 op 
121 8d1b399b 2021-07-22 op struct kd_conf {
122 8d1b399b 2021-07-22 op 	struct kd_options_conf					 kd_options;
123 c25feded 2021-07-26 op 	STAILQ_HEAD(kd_pki_conf_head, kd_pki_conf)		 pki_head;
124 c25feded 2021-07-26 op 	STAILQ_HEAD(kd_tables_conf_head, kd_tables_conf)	 table_head;
125 c25feded 2021-07-26 op 	STAILQ_HEAD(kd_listen_conf_head, kd_listen_conf)	 listen_head;
126 8d1b399b 2021-07-22 op };
127 8d1b399b 2021-07-22 op 
128 0ca6718e 2021-07-22 op struct kd_auth_req {
129 0ca6718e 2021-07-22 op 	uint32_t	listen_id;
130 0ca6718e 2021-07-22 op 	char		hash[128+1];
131 0ca6718e 2021-07-22 op };
132 0ca6718e 2021-07-22 op 
133 8850afbc 2021-07-25 op /*
134 8850afbc 2021-07-25 op  * 9p message header.
135 8850afbc 2021-07-25 op  *
136 8850afbc 2021-07-25 op  * The message itself is len bytes long (counting the whole header
137 8850afbc 2021-07-25 op  * too.)
138 8850afbc 2021-07-25 op  */
139 8850afbc 2021-07-25 op struct np_msg_header {
140 8850afbc 2021-07-25 op 	uint32_t	len;
141 8850afbc 2021-07-25 op 	uint8_t		type;
142 8850afbc 2021-07-25 op 	uint16_t	tag;
143 8850afbc 2021-07-25 op };
144 8850afbc 2021-07-25 op 
145 8850afbc 2021-07-25 op /* useful constants */
146 51b2b17e 2021-07-28 op #define HEADERSIZE	(4 + 1 + 2)
147 0c8f02ba 2021-07-27 op #define	VERSION9P	"9P2000"
148 4321cc20 2021-07-28 op #define MSIZE9P		((uint32_t)4*1024*1024)
149 8850afbc 2021-07-25 op #define NOTAG		((uint16_t)~0U)
150 8850afbc 2021-07-25 op #define NOFID		((uint32_t)~0U)
151 8850afbc 2021-07-25 op #define NOUID		(-1)
152 4f6b2143 2021-07-30 op #define QIDSIZE		13
153 1c08fc54 2021-08-01 op #define MAXWELEM	16
154 8850afbc 2021-07-25 op 
155 5585f1c3 2021-12-16 op #define NPSTATSIZ(namlen, uidnam, gidnam, unam) \
156 5585f1c3 2021-12-16 op 	(8 + QIDSIZE + 20 + 2 + namlen + 2 + uidnam + 2 + gidnam + 2 + unam)
157 5585f1c3 2021-12-16 op 
158 95e21698 2021-07-29 op /* bits in Qid.type */
159 95e21698 2021-07-29 op #define QTDIR		0x80		/* type bit for directories */
160 95e21698 2021-07-29 op #define QTAPPEND	0x40		/* type bit for append only files */
161 95e21698 2021-07-29 op #define QTEXCL		0x20		/* type bit for exclusive use files */
162 95e21698 2021-07-29 op #define QTMOUNT		0x10		/* type bit for mounted channel */
163 95e21698 2021-07-29 op #define QTAUTH		0x08		/* type bit for authentication file */
164 95e21698 2021-07-29 op #define QTTMP		0x04		/* type bit for non-backed-up file */
165 95e21698 2021-07-29 op #define QTSYMLINK	0x02		/* type bit for symbolic link */
166 95e21698 2021-07-29 op #define QTFILE		0x00		/* type bits for plain file */
167 95e21698 2021-07-29 op 
168 021481ca 2021-12-13 op /* Topen mode/flags */
169 021481ca 2021-12-13 op #define KOREAD		0x00
170 021481ca 2021-12-13 op #define KOWRITE		0x01
171 021481ca 2021-12-13 op #define KORDWR		0x02
172 021481ca 2021-12-13 op #define KOEXEC		0x03
173 021481ca 2021-12-13 op #define KOTRUNC		0x10
174 021481ca 2021-12-13 op #define KORCLOSE	0x40
175 021481ca 2021-12-13 op 
176 8850afbc 2021-07-25 op /* 9p message types */
177 8850afbc 2021-07-25 op enum {
178 5e76e4a6 2021-12-16 op 	Treaddir =	40,	/* .L */
179 5e76e4a6 2021-12-16 op 	Rreaddir,
180 5e76e4a6 2021-12-16 op 
181 8850afbc 2021-07-25 op 	Tversion =	100,
182 8850afbc 2021-07-25 op 	Rversion,
183 8850afbc 2021-07-25 op 	Tauth =		102,
184 8850afbc 2021-07-25 op 	Rauth,
185 8850afbc 2021-07-25 op 	Tattach =	104,
186 8850afbc 2021-07-25 op 	Rattach,
187 8850afbc 2021-07-25 op 	Terror =	106,	/* illegal */
188 8850afbc 2021-07-25 op 	Rerror,
189 8850afbc 2021-07-25 op 	Tflush =	108,
190 8850afbc 2021-07-25 op 	Rflush,
191 8850afbc 2021-07-25 op 	Twalk =		110,
192 8850afbc 2021-07-25 op 	Rwalk,
193 8850afbc 2021-07-25 op 	Topen =		112,
194 8850afbc 2021-07-25 op 	Ropen,
195 8850afbc 2021-07-25 op 	Tcreate =	114,
196 8850afbc 2021-07-25 op 	Rcreate,
197 8850afbc 2021-07-25 op 	Tread =		116,
198 8850afbc 2021-07-25 op 	Rread,
199 8850afbc 2021-07-25 op 	Twrite =	118,
200 8850afbc 2021-07-25 op 	Rwrite,
201 8850afbc 2021-07-25 op 	Tclunk =	120,
202 8850afbc 2021-07-25 op 	Rclunk,
203 8850afbc 2021-07-25 op 	Tremove =	122,
204 8850afbc 2021-07-25 op 	Rremove,
205 8850afbc 2021-07-25 op 	Tstat =		124,
206 8850afbc 2021-07-25 op 	Rstat,
207 8850afbc 2021-07-25 op 	Twstat =	126,
208 8850afbc 2021-07-25 op 	Rwstat,
209 8850afbc 2021-07-25 op 	Tmax,
210 8850afbc 2021-07-25 op 
211 8850afbc 2021-07-25 op 	/*
212 8850afbc 2021-07-25 op 	 * plan9ports' include/fcall.h also has a
213 8850afbc 2021-07-25 op 	 *
214 8850afbc 2021-07-25 op 	 *	Topenfd = 98,
215 8850afbc 2021-07-25 op 	 *	Ropenfd,
216 8850afbc 2021-07-25 op 	 *
217 8850afbc 2021-07-25 op 	 * which it's not mentioned in the 9p "rfc" over at
218 8850afbc 2021-07-25 op 	 * 9p.cat-v.org.  Ignoring that for now.
219 8850afbc 2021-07-25 op 	 */
220 8850afbc 2021-07-25 op };
221 8850afbc 2021-07-25 op 
222 8d1b399b 2021-07-22 op /* kamid.c */
223 8d1b399b 2021-07-22 op extern int verbose;
224 8d1b399b 2021-07-22 op int	main_imsg_compose_listener(int, int, uint32_t, const void *, uint16_t);
225 8d1b399b 2021-07-22 op void	merge_config(struct kd_conf *, struct kd_conf *);
226 8d1b399b 2021-07-22 op 
227 8d1b399b 2021-07-22 op struct kd_conf	*config_new_empty(void);
228 8d1b399b 2021-07-22 op void		 config_clear(struct kd_conf *);
229 8d1b399b 2021-07-22 op 
230 8d1b399b 2021-07-22 op /* parse.y */
231 8d1b399b 2021-07-22 op struct kd_conf	*parse_config(const char *);
232 8d1b399b 2021-07-22 op int		 cmdline_symset(char *);
233 8d1b399b 2021-07-22 op 
234 8d1b399b 2021-07-22 op #endif