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CLEANUP: cli: simplify the "show cli sockets" I/O handler

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The code is was a bit convoluted by the use of a state machine around
st2 that is not used since only the STAT_ST_LIST state was used, and
the test of global.cli_fe inside the loop while it ought better be
tested before entering there. Let's get rid of this unneded state and
simplify the code. There's no more need for ->st2 now. The code looks
more changed than it really is due to the reindent caused by the
removal of the switch statement, but "git show -b" shows what really
changed.
This commit is contained in:
Willy Tarreau 2022-05-05 18:52:36 +02:00
parent 307dbb33bb
commit 4df54eb151
1 changed files with 64 additions and 72 deletions
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136
src/cli.c
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@ -1559,81 +1559,73 @@ static int cli_io_handler_show_cli_sock(struct appctx *appctx)
struct bind_conf *bind_conf = appctx->ctx.cli.p0;
struct conn_stream *cs = appctx->owner;
if (!global.cli_fe)
goto done;
chunk_reset(&trash);
switch (appctx->st2) {
case STAT_ST_INIT:
chunk_printf(&trash, "# socket lvl processes\n");
if (ci_putchk(cs_ic(cs), &trash) == -1) {
cs_rx_room_blk(cs);
return 0;
}
appctx->st2 = STAT_ST_LIST;
/* fall through */
case STAT_ST_LIST:
if (global.cli_fe) {
if (!bind_conf)
bind_conf = LIST_ELEM(global.cli_fe->conf.bind.n, typeof(bind_conf), by_fe);
list_for_each_entry_from(bind_conf, &global.cli_fe->conf.bind, by_fe) {
struct listener *l = appctx->ctx.cli.p1;
if (!l)
l = LIST_ELEM(bind_conf->listeners.n, typeof(l), by_bind);
list_for_each_entry_from(l, &bind_conf->listeners, by_bind) {
char addr[46];
char port[6];
if (l->rx.addr.ss_family == AF_UNIX) {
const struct sockaddr_un *un;
un = (struct sockaddr_un *)&l->rx.addr;
if (un->sun_path[0] == '\0') {
chunk_appendf(&trash, "abns@%s ", un->sun_path+1);
} else {
chunk_appendf(&trash, "unix@%s ", un->sun_path);
}
} else if (l->rx.addr.ss_family == AF_INET) {
addr_to_str(&l->rx.addr, addr, sizeof(addr));
port_to_str(&l->rx.addr, port, sizeof(port));
chunk_appendf(&trash, "ipv4@%s:%s ", addr, port);
} else if (l->rx.addr.ss_family == AF_INET6) {
addr_to_str(&l->rx.addr, addr, sizeof(addr));
port_to_str(&l->rx.addr, port, sizeof(port));
chunk_appendf(&trash, "ipv6@[%s]:%s ", addr, port);
} else if (l->rx.addr.ss_family == AF_CUST_SOCKPAIR) {
chunk_appendf(&trash, "sockpair@%d ", ((struct sockaddr_in *)&l->rx.addr)->sin_addr.s_addr);
} else
chunk_appendf(&trash, "unknown ");
if ((bind_conf->level & ACCESS_LVL_MASK) == ACCESS_LVL_ADMIN)
chunk_appendf(&trash, "admin ");
else if ((bind_conf->level & ACCESS_LVL_MASK) == ACCESS_LVL_OPER)
chunk_appendf(&trash, "operator ");
else if ((bind_conf->level & ACCESS_LVL_MASK) == ACCESS_LVL_USER)
chunk_appendf(&trash, "user ");
else
chunk_appendf(&trash, " ");
chunk_appendf(&trash, "all\n");
if (ci_putchk(cs_ic(cs), &trash) == -1) {
/* buffer full, we must yield */
appctx->ctx.cli.p0 = bind_conf;
appctx->ctx.cli.p1 = l;
cs_rx_room_blk(cs);
return 0;
}
}
}
}
/* fall through */
default:
appctx->st2 = STAT_ST_FIN;
return 1;
if (!bind_conf) {
/* first call */
if (ci_putstr(cs_ic(cs), "# socket lvl processes\n") == -1)
goto full;
bind_conf = LIST_ELEM(global.cli_fe->conf.bind.n, typeof(bind_conf), by_fe);
}
list_for_each_entry_from(bind_conf, &global.cli_fe->conf.bind, by_fe) {
struct listener *l = appctx->ctx.cli.p1;
if (!l)
l = LIST_ELEM(bind_conf->listeners.n, typeof(l), by_bind);
list_for_each_entry_from(l, &bind_conf->listeners, by_bind) {
char addr[46];
char port[6];
if (l->rx.addr.ss_family == AF_UNIX) {
const struct sockaddr_un *un;
un = (struct sockaddr_un *)&l->rx.addr;
if (un->sun_path[0] == '\0') {
chunk_appendf(&trash, "abns@%s ", un->sun_path+1);
} else {
chunk_appendf(&trash, "unix@%s ", un->sun_path);
}
} else if (l->rx.addr.ss_family == AF_INET) {
addr_to_str(&l->rx.addr, addr, sizeof(addr));
port_to_str(&l->rx.addr, port, sizeof(port));
chunk_appendf(&trash, "ipv4@%s:%s ", addr, port);
} else if (l->rx.addr.ss_family == AF_INET6) {
addr_to_str(&l->rx.addr, addr, sizeof(addr));
port_to_str(&l->rx.addr, port, sizeof(port));
chunk_appendf(&trash, "ipv6@[%s]:%s ", addr, port);
} else if (l->rx.addr.ss_family == AF_CUST_SOCKPAIR) {
chunk_appendf(&trash, "sockpair@%d ", ((struct sockaddr_in *)&l->rx.addr)->sin_addr.s_addr);
} else
chunk_appendf(&trash, "unknown ");
if ((bind_conf->level & ACCESS_LVL_MASK) == ACCESS_LVL_ADMIN)
chunk_appendf(&trash, "admin ");
else if ((bind_conf->level & ACCESS_LVL_MASK) == ACCESS_LVL_OPER)
chunk_appendf(&trash, "operator ");
else if ((bind_conf->level & ACCESS_LVL_MASK) == ACCESS_LVL_USER)
chunk_appendf(&trash, "user ");
else
chunk_appendf(&trash, " ");
chunk_appendf(&trash, "all\n");
if (ci_putchk(cs_ic(cs), &trash) == -1) {
appctx->ctx.cli.p0 = bind_conf;
appctx->ctx.cli.p1 = l;
goto full;
}
}
}
done:
return 1;
full:
cs_rx_room_blk(cs);
return 0;
}