xref: /dpdk/app/graph/cli.c (revision 83b8e58e177fdd364a847dc77ad2f92c5de96163) 
1 /* SPDX-License-Identifier: BSD-3-Clause
2  * Copyright(c) 2023 Marvell.
3  */
4 
5 #include <errno.h>
6 #include <stdio.h>
7 #include <stdint.h>
8 #include <stdlib.h>
9 #include <string.h>
10 
11 #include <cmdline_parse.h>
12 #include <cmdline_parse_num.h>
13 #include <cmdline_parse_string.h>
14 #include <cmdline_socket.h>
15 #include <rte_common.h>
16 
17 #include "module_api.h"
18 
19 #define CMD_MAX_TOKENS 256
20 #define MAX_LINE_SIZE 2048
21 
22 cmdline_parse_ctx_t modules_ctx[] = {
23 	(cmdline_parse_inst_t *)&mempool_config_cmd_ctx,
24 	(cmdline_parse_inst_t *)&mempool_help_cmd_ctx,
25 	(cmdline_parse_inst_t *)&ethdev_show_cmd_ctx,
26 	(cmdline_parse_inst_t *)&ethdev_stats_cmd_ctx,
27 	(cmdline_parse_inst_t *)&ethdev_mtu_cmd_ctx,
28 	(cmdline_parse_inst_t *)&ethdev_prom_mode_cmd_ctx,
29 	(cmdline_parse_inst_t *)&ethdev_ip4_cmd_ctx,
30 	(cmdline_parse_inst_t *)&ethdev_ip6_cmd_ctx,
31 	(cmdline_parse_inst_t *)&ethdev_cmd_ctx,
32 	(cmdline_parse_inst_t *)&ethdev_help_cmd_ctx,
33 	(cmdline_parse_inst_t *)&ipv4_lookup_cmd_ctx,
34 	(cmdline_parse_inst_t *)&ipv4_lookup_help_cmd_ctx,
35 	(cmdline_parse_inst_t *)&ipv6_lookup_cmd_ctx,
36 	(cmdline_parse_inst_t *)&ipv6_lookup_help_cmd_ctx,
37 	NULL,
38 };
39 
40 static struct cmdline *cl;
41 
42 static int
43 is_comment(char *in)
44 {
45 	if ((strlen(in) && index("!#%;", in[0])) ||
46 		(strncmp(in, "//", 2) == 0) ||
47 		(strncmp(in, "--", 2) == 0))
48 		return 1;
49 
50 	return 0;
51 }
52 
53 void
54 cli_init(void)
55 {
56 	cl = cmdline_stdin_new(modules_ctx, "");
57 }
58 
59 void
60 cli_exit(void)
61 {
62 	cmdline_stdin_exit(cl);
63 }
64 
65 void
66 cli_process(char *in, char *out, size_t out_size, __rte_unused void *obj)
67 {
68 	int rc;
69 
70 	if (is_comment(in))
71 		return;
72 
73 	rc = cmdline_parse(cl, in);
74 	if (rc == CMDLINE_PARSE_AMBIGUOUS)
75 		snprintf(out, out_size, MSG_CMD_FAIL, "Ambiguous command");
76 	else if (rc == CMDLINE_PARSE_NOMATCH)
77 		snprintf(out, out_size, MSG_CMD_FAIL, "Command mismatch");
78 	else if (rc == CMDLINE_PARSE_BAD_ARGS)
79 		snprintf(out, out_size, MSG_CMD_FAIL, "Bad arguments");
80 
81 	return;
82 
83 }
84 
85 int
86 cli_script_process(const char *file_name, size_t msg_in_len_max, size_t msg_out_len_max, void *obj)
87 {
88 	char *msg_in = NULL, *msg_out = NULL;
89 	int rc = -EINVAL;
90 	FILE *f = NULL;
91 
92 	/* Check input arguments */
93 	if ((file_name == NULL) || (strlen(file_name) == 0) || (msg_in_len_max == 0) ||
94 	    (msg_out_len_max == 0))
95 		return rc;
96 
97 	msg_in = malloc(msg_in_len_max + 1);
98 	msg_out = malloc(msg_out_len_max + 1);
99 	if ((msg_in == NULL) || (msg_out == NULL)) {
100 		rc = -ENOMEM;
101 		goto exit;
102 	}
103 
104 	/* Open input file */
105 	f = fopen(file_name, "r");
106 	if (f == NULL) {
107 		rc = -EIO;
108 		goto exit;
109 	}
110 
111 	/* Read file */
112 	while (fgets(msg_in, msg_in_len_max, f) != NULL) {
113 		msg_out[0] = 0;
114 
115 		cli_process(msg_in, msg_out, msg_out_len_max, obj);
116 
117 		if (strlen(msg_out))
118 			printf("%s", msg_out);
119 	}
120 
121 	/* Close file */
122 	fclose(f);
123 	rc = 0;
124 
125 exit:
126 	free(msg_out);
127 	free(msg_in);
128 	return rc;
129 }
130