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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2014 Intel Corporation.
* Copyright (c) 2009, Olivier MATZ <zer0@droids-corp.org>
* All rights reserved.
*/
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdarg.h>
#include <inttypes.h>
#include <fcntl.h>
#include <poll.h>
#include <errno.h>
#include <termios.h>
#include <netinet/in.h>
#include <rte_string_fns.h>
#include "cmdline_parse.h"
#include "cmdline_rdline.h"
#include "cmdline.h"
static void
cmdline_valid_buffer(struct rdline *rdl, const char *buf,
__attribute__((unused)) unsigned int size)
{
struct cmdline *cl = rdl->opaque;
int ret;
ret = cmdline_parse(cl, buf);
if (ret == CMDLINE_PARSE_AMBIGUOUS)
cmdline_printf(cl, "Ambiguous command\n");
else if (ret == CMDLINE_PARSE_NOMATCH)
cmdline_printf(cl, "Command not found\n");
else if (ret == CMDLINE_PARSE_BAD_ARGS)
cmdline_printf(cl, "Bad arguments\n");
}
static int
cmdline_complete_buffer(struct rdline *rdl, const char *buf,
char *dstbuf, unsigned int dstsize,
int *state)
{
struct cmdline *cl = rdl->opaque;
return cmdline_complete(cl, buf, state, dstbuf, dstsize);
}
int
cmdline_write_char(struct rdline *rdl, char c)
{
int ret = -1;
struct cmdline *cl;
if (!rdl)
return -1;
cl = rdl->opaque;
if (cl->s_out >= 0)
ret = write(cl->s_out, &c, 1);
return ret;
}
void
cmdline_set_prompt(struct cmdline *cl, const char *prompt)
{
if (!cl || !prompt)
return;
snprintf(cl->prompt, sizeof(cl->prompt), "%s", prompt);
}
struct cmdline *
cmdline_new(cmdline_parse_ctx_t *ctx, const char *prompt, int s_in, int s_out)
{
struct cmdline *cl;
int ret;
if (!ctx || !prompt)
return NULL;
cl = malloc(sizeof(struct cmdline));
if (cl == NULL)
return NULL;
memset(cl, 0, sizeof(struct cmdline));
cl->s_in = s_in;
cl->s_out = s_out;
cl->ctx = ctx;
ret = rdline_init(&cl->rdl, cmdline_write_char, cmdline_valid_buffer,
cmdline_complete_buffer);
if (ret != 0) {
free(cl);
return NULL;
}
cl->rdl.opaque = cl;
cmdline_set_prompt(cl, prompt);
rdline_newline(&cl->rdl, cl->prompt);
return cl;
}
void
cmdline_free(struct cmdline *cl)
{
dprintf("called\n");
if (!cl)
return;
if (cl->s_in > 2)
close(cl->s_in);
if (cl->s_out != cl->s_in && cl->s_out > 2)
close(cl->s_out);
free(cl);
}
void
cmdline_printf(const struct cmdline *cl, const char *fmt, ...)
{
va_list ap;
if (!cl || !fmt)
return;
#ifdef _GNU_SOURCE
if (cl->s_out < 0)
return;
va_start(ap, fmt);
vdprintf(cl->s_out, fmt, ap);
va_end(ap);
#else
int ret;
char *buf;
if (cl->s_out < 0)
return;
buf = malloc(BUFSIZ);
if (buf == NULL)
return;
va_start(ap, fmt);
ret = vsnprintf(buf, BUFSIZ, fmt, ap);
va_end(ap);
if (ret < 0) {
free(buf);
return;
}
if (ret >= BUFSIZ)
ret = BUFSIZ - 1;
ret = write(cl->s_out, buf, ret);
(void)ret;
free(buf);
#endif
}
int
cmdline_in(struct cmdline *cl, const char *buf, int size)
{
const char *history, *buffer;
size_t histlen, buflen;
int ret = 0;
int i, same;
if (!cl || !buf)
return -1;
for (i=0; i<size; i++) {
ret = rdline_char_in(&cl->rdl, buf[i]);
if (ret == RDLINE_RES_VALIDATED) {
buffer = rdline_get_buffer(&cl->rdl);
history = rdline_get_history_item(&cl->rdl, 0);
if (history) {
histlen = strnlen(history, RDLINE_BUF_SIZE);
same = !memcmp(buffer, history, histlen) &&
buffer[histlen] == '\n';
}
else
same = 0;
buflen = strnlen(buffer, RDLINE_BUF_SIZE);
if (buflen > 1 && !same)
rdline_add_history(&cl->rdl, buffer);
rdline_newline(&cl->rdl, cl->prompt);
}
else if (ret == RDLINE_RES_EOF)
return -1;
else if (ret == RDLINE_RES_EXITED)
return -1;
}
return i;
}
void
cmdline_quit(struct cmdline *cl)
{
if (!cl)
return;
rdline_quit(&cl->rdl);
}
int
cmdline_poll(struct cmdline *cl)
{
struct pollfd pfd;
int status;
ssize_t read_status;
char c;
if (!cl)
return -EINVAL;
else if (cl->rdl.status == RDLINE_EXITED)
return RDLINE_EXITED;
pfd.fd = cl->s_in;
pfd.events = POLLIN;
pfd.revents = 0;
status = poll(&pfd, 1, 0);
if (status < 0)
return status;
else if (status > 0) {
c = -1;
read_status = read(cl->s_in, &c, 1);
if (read_status < 0)
return read_status;
status = cmdline_in(cl, &c, 1);
if (status < 0 && cl->rdl.status != RDLINE_EXITED)
return status;
}
return cl->rdl.status;
}
void
cmdline_interact(struct cmdline *cl)
{
char c;
if (!cl)
return;
c = -1;
while (1) {
if (read(cl->s_in, &c, 1) <= 0)
break;
if (cmdline_in(cl, &c, 1) < 0)
break;
}
}
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