mirror of https://github.com/omar-polo/gmid.git
124 lines
3.8 KiB
C
124 lines
3.8 KiB
C
/*
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* Copyright (c) 2010-2015 Reyk Floeter <reyk@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/* imsg */
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struct imsgev {
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struct imsgbuf ibuf;
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void (*handler)(int, short, void *);
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struct event ev;
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struct privsep_proc *proc;
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void *data;
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short events;
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};
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#define IMSG_SIZE_CHECK(imsg, p) do { \
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if (IMSG_DATA_SIZE(imsg) < sizeof(*p)) \
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fatalx("bad length imsg received (%s)", #p); \
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} while (0)
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#define IMSG_DATA_SIZE(imsg) ((imsg)->hdr.len - IMSG_HEADER_SIZE)
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#define PROC_PARENT_SOCK_FILENO 3
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/* privsep */
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enum privsep_procid {
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PROC_PARENT,
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PROC_SERVER,
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PROC_CRYPTO,
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PROC_LOGGER,
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PROC_MAX,
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};
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#define CONFIG_RELOAD 0x00
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#define CONFIG_SOCKS 0x01
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#define CONFIG_ALL 0xff
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struct privsep_pipes {
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int *pp_pipes[PROC_MAX];
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};
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struct privsep {
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struct privsep_pipes *ps_pipes[PROC_MAX];
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struct privsep_pipes *ps_pp;
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struct imsgev *ps_ievs[PROC_MAX];
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const char *ps_title[PROC_MAX];
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uint8_t ps_what[PROC_MAX];
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struct passwd *ps_pw;
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int ps_noaction;
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unsigned int ps_instances[PROC_MAX];
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unsigned int ps_instance;
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/* Event and signal handlers */
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struct event ps_evsigint;
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struct event ps_evsigterm;
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struct event ps_evsigchld;
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struct event ps_evsighup;
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struct event ps_evsigusr1;
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void *ps_env;
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};
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struct privsep_proc {
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const char *p_title;
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enum privsep_procid p_id;
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int (*p_cb)(int, struct privsep_proc *,
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struct imsg *);
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void (*p_init)(struct privsep *,
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struct privsep_proc *);
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void (*p_shutdown)(void);
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const char *p_chroot;
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struct passwd *p_pw;
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struct privsep *p_ps;
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};
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struct privsep_fd {
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enum privsep_procid pf_procid;
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unsigned int pf_instance;
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};
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/* proc.c */
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void proc_init(struct privsep *, struct privsep_proc *, unsigned int,
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int, int, char **, enum privsep_procid);
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void proc_kill(struct privsep *);
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void proc_connect(struct privsep *ps);
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void proc_dispatch(int, short event, void *);
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void proc_range(struct privsep *, enum privsep_procid, int *, int *);
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void proc_run(struct privsep *, struct privsep_proc *,
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struct privsep_proc *, unsigned int,
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void (*)(struct privsep *, struct privsep_proc *, void *), void *);
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void imsg_event_add(struct imsgev *);
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int imsg_compose_event(struct imsgev *, uint16_t, uint32_t,
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pid_t, int, void *, uint16_t);
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int imsg_composev_event(struct imsgev *, uint16_t, uint32_t,
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pid_t, int, const struct iovec *, int);
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int proc_compose_imsg(struct privsep *, enum privsep_procid, int,
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uint16_t, uint32_t, int, void *, uint16_t);
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int proc_compose(struct privsep *, enum privsep_procid,
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uint16_t, void *data, uint16_t);
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int proc_composev_imsg(struct privsep *, enum privsep_procid, int,
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uint16_t, uint32_t, int, const struct iovec *, int);
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int proc_composev(struct privsep *, enum privsep_procid,
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uint16_t, const struct iovec *, int);
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struct imsgbuf *
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proc_ibuf(struct privsep *, enum privsep_procid, int);
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struct imsgev *
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proc_iev(struct privsep *, enum privsep_procid, int);
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enum privsep_procid
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proc_getid(struct privsep_proc *, unsigned int, const char *);
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int proc_flush_imsg(struct privsep *, enum privsep_procid, int);
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