xref: /dpdk/app/graph/cli.c (revision aff63b6d3e7829696566e092520ccf9ca71f0454) 
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 	NULL,
36 };
37 
38 static struct cmdline *cl;
39 
40 static int
41 is_comment(char *in)
42 {
43 	if ((strlen(in) && index("!#%;", in[0])) ||
44 		(strncmp(in, "//", 2) == 0) ||
45 		(strncmp(in, "--", 2) == 0))
46 		return 1;
47 
48 	return 0;
49 }
50 
51 void
52 cli_init(void)
53 {
54 	cl = cmdline_stdin_new(modules_ctx, "");
55 }
56 
57 void
58 cli_exit(void)
59 {
60 	cmdline_stdin_exit(cl);
61 }
62 
63 void
64 cli_process(char *in, char *out, size_t out_size, __rte_unused void *obj)
65 {
66 	int rc;
67 
68 	if (is_comment(in))
69 		return;
70 
71 	rc = cmdline_parse(cl, in);
72 	if (rc == CMDLINE_PARSE_AMBIGUOUS)
73 		snprintf(out, out_size, MSG_CMD_FAIL, "Ambiguous command");
74 	else if (rc == CMDLINE_PARSE_NOMATCH)
75 		snprintf(out, out_size, MSG_CMD_FAIL, "Command mismatch");
76 	else if (rc == CMDLINE_PARSE_BAD_ARGS)
77 		snprintf(out, out_size, MSG_CMD_FAIL, "Bad arguments");
78 
79 	return;
80 
81 }
82 
83 int
84 cli_script_process(const char *file_name, size_t msg_in_len_max, size_t msg_out_len_max, void *obj)
85 {
86 	char *msg_in = NULL, *msg_out = NULL;
87 	int rc = -EINVAL;
88 	FILE *f = NULL;
89 
90 	/* Check input arguments */
91 	if ((file_name == NULL) || (strlen(file_name) == 0) || (msg_in_len_max == 0) ||
92 	    (msg_out_len_max == 0))
93 		return rc;
94 
95 	msg_in = malloc(msg_in_len_max + 1);
96 	msg_out = malloc(msg_out_len_max + 1);
97 	if ((msg_in == NULL) || (msg_out == NULL)) {
98 		rc = -ENOMEM;
99 		goto exit;
100 	}
101 
102 	/* Open input file */
103 	f = fopen(file_name, "r");
104 	if (f == NULL) {
105 		rc = -EIO;
106 		goto exit;
107 	}
108 
109 	/* Read file */
110 	while (fgets(msg_in, msg_in_len_max, f) != NULL) {
111 		msg_out[0] = 0;
112 
113 		cli_process(msg_in, msg_out, msg_out_len_max, obj);
114 
115 		if (strlen(msg_out))
116 			printf("%s", msg_out);
117 	}
118 
119 	/* Close file */
120 	fclose(f);
121 	rc = 0;
122 
123 exit:
124 	free(msg_out);
125 	free(msg_in);
126 	return rc;
127 }
128