File: | src/usr.bin/bgplg/bgplgsh/../bgplgsh.c |
Warning: | line 268, column 3 Potential leak of memory pointed to by 'argp' |
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1 | /* $OpenBSD: bgplgsh.c,v 1.8 2015/12/09 17:52:24 mmcc Exp $ */ | |||
2 | ||||
3 | /* | |||
4 | * Copyright (c) 2005, 2006 Reyk Floeter <reyk@openbsd.org> | |||
5 | * | |||
6 | * Permission to use, copy, modify, and distribute this software for any | |||
7 | * purpose with or without fee is hereby granted, provided that the above | |||
8 | * copyright notice and this permission notice appear in all copies. | |||
9 | * | |||
10 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |||
11 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |||
12 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |||
13 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |||
14 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |||
15 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |||
16 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |||
17 | */ | |||
18 | ||||
19 | #include <sys/types.h> | |||
20 | #include <sys/stat.h> | |||
21 | ||||
22 | #include <stdio.h> | |||
23 | #include <stdlib.h> | |||
24 | #include <signal.h> | |||
25 | #include <string.h> | |||
26 | #include <unistd.h> | |||
27 | #include <limits.h> | |||
28 | #include <ctype.h> | |||
29 | #include <errno(*__errno()).h> | |||
30 | #include <fcntl.h> | |||
31 | ||||
32 | #include <readline/readline.h> | |||
33 | #include <readline/history.h> | |||
34 | ||||
35 | #include "bgplg.h" | |||
36 | ||||
37 | #define BGPDSOCK"/var/www/run/bgpd.rsock" "/var/www/run/bgpd.rsock" | |||
38 | #define BGPCTL"/usr/sbin/bgpctl", "-s", "/var/www/run/bgpd.rsock" "/usr/sbin/bgpctl", "-s", BGPDSOCK"/var/www/run/bgpd.rsock" | |||
39 | #define PING"/sbin/ping" "/sbin/ping" | |||
40 | #define TRACEROUTE"/usr/sbin/traceroute" "/usr/sbin/traceroute" | |||
41 | #define PING6"/sbin/ping6" "/sbin/ping6" | |||
42 | #define TRACEROUTE6"/usr/sbin/traceroute6" "/usr/sbin/traceroute6" | |||
43 | ||||
44 | static volatile int quit; | |||
45 | ||||
46 | static struct cmd cmds[] = CMDS{ { "show ip bgp", 1, 1, "<prefix>", { "/usr/sbin/bgpctl" , "-s", "/var/www/run/bgpd.rsock", "show", "ip", "bgp", ((void *)0) } }, { "show ip bgp as", 1, 1, "<asnum>", { "/usr/sbin/bgpctl", "-s", "/var/www/run/bgpd.rsock", "show" , "ip", "bgp", "as", ((void *)0) } }, { "show ip bgp source-as" , 1, 1, "<asnum>", { "/usr/sbin/bgpctl", "-s", "/var/www/run/bgpd.rsock" , "show", "ip", "bgp", "source-as", ((void *)0) } }, { "show ip bgp transit-as" , 1, 1, "<asnum>", { "/usr/sbin/bgpctl", "-s", "/var/www/run/bgpd.rsock" , "show", "ip", "bgp", "transit-as", ((void *)0) } }, { "show ip bgp peer-as" , 1, 1, "<asnum>", { "/usr/sbin/bgpctl", "-s", "/var/www/run/bgpd.rsock" , "show", "ip", "bgp", "peer-as", ((void *)0) } }, { "show ip bgp empty-as" , 0, 0, ((void *)0), { "/usr/sbin/bgpctl", "-s", "/var/www/run/bgpd.rsock" , "show", "ip", "bgp", "empty-as", ((void *)0) } }, { "show ip bgp summary" , 0, 0, ((void *)0), { "/usr/sbin/bgpctl", "-s", "/var/www/run/bgpd.rsock" , "show", "ip", "bgp", "summary", ((void *)0) } }, { "show ip bgp community" , 1, 1, "<community>", { "/usr/sbin/bgpctl", "-s" , "/var/www/run/bgpd.rsock", "show","ip", "bgp", "community", ((void *)0) } }, { "show ip bgp detail community", 1, 1, "<community>" , { "/usr/sbin/bgpctl", "-s", "/var/www/run/bgpd.rsock", "show" ,"ip", "bgp", "detail", "community", ((void *)0) } }, { "show ip bgp ext-community" , 2, 2, "<ext-community>", { "/usr/sbin/bgpctl" , "-s", "/var/www/run/bgpd.rsock", "show","ip", "bgp", "ext-community" , ((void *)0) } }, { "show ip bgp detail ext-community", 2, 2 , "<ext-community>", { "/usr/sbin/bgpctl", "-s" , "/var/www/run/bgpd.rsock", "show","ip", "bgp", "detail", "ext-community" , ((void *)0) } }, { "show ip bgp large-community", 1, 1, "<large-community>" , { "/usr/sbin/bgpctl", "-s", "/var/www/run/bgpd.rsock", "show" ,"ip", "bgp", "large-community", ((void *)0) } }, { "show ip bgp detail large-community" , 1, 1, "<large-community>", { "/usr/sbin/bgpctl" , "-s", "/var/www/run/bgpd.rsock", "show","ip", "bgp", "detail" , "large-community", ((void *)0) } }, { "show ip bgp detail", 1, 1, "<prefix>", { "/usr/sbin/bgpctl", "-s", "/var/www/run/bgpd.rsock" , "show","ip", "bgp", "detail", ((void *)0) } }, { "show ip bgp detail as" , 1, 1, "<asnum>", { "/usr/sbin/bgpctl", "-s", "/var/www/run/bgpd.rsock" , "show","ip", "bgp", "detail", "as", ((void *)0) } }, { "show ip bgp in" , 1, 1, "<neighbor>", { "/usr/sbin/bgpctl", "-s" , "/var/www/run/bgpd.rsock", "show","ip", "bgp", "in", "neighbor" , ((void *)0) } }, { "show ip bgp out", 1, 1, "<neighbor>" , { "/usr/sbin/bgpctl", "-s", "/var/www/run/bgpd.rsock", "show" ,"ip", "bgp", "out", "neighbor", ((void *)0) } }, { "show ip bgp ovs" , 1, 1, "<state>", { "/usr/sbin/bgpctl", "-s", "/var/www/run/bgpd.rsock" , "show","ip", "bgp", "ovs", ((void *)0) } }, { "show ip bgp avs" , 1, 1, "<state>", { "/usr/sbin/bgpctl", "-s", "/var/www/run/bgpd.rsock" , "show","ip", "bgp", "avs", ((void *)0) } }, { "show ip bgp memory" , 0, 0, ((void *)0), { "/usr/sbin/bgpctl", "-s", "/var/www/run/bgpd.rsock" , "show", "ip", "bgp", "memory", ((void *)0) } }, { "show neighbor" , 0, 1, ((void *)0), { "/usr/sbin/bgpctl", "-s", "/var/www/run/bgpd.rsock" , "show", "neighbor", ((void *)0) } }, { "show nexthop", 0, 0 , ((void *)0), { "/usr/sbin/bgpctl", "-s", "/var/www/run/bgpd.rsock" , "show", "nexthop", ((void *)0) } }, { "traceroute", 1, 1, "<address>" , { "/usr/sbin/traceroute", "-ASl", ((void *)0) } }, { "ping" , 1, 1, "<address>", { "/sbin/ping", "-c4", "-w2" , ((void *)0) } }, { "traceroute6", 1, 1, "<address>" , { "/usr/sbin/traceroute6", "-Al", ((void *)0) } }, { "ping6" , 1, 1, "<address>", { "/sbin/ping6", "-c4", "-i2" , ((void *)0) } }, { "help", 0, 0, ((void *)0), { ((void *)0) }, lg_help }, { ((void *)0) } }; | |||
47 | ||||
48 | char **lg_arg2argv(char *, int *); | |||
49 | char **lg_argextra(char **, int, int, struct cmd *); | |||
50 | int lg_checkarg(char *); | |||
51 | int lg_checkcmd(int, char **, int *, struct cmd *); | |||
52 | char *lg_completion(const char *, int); | |||
53 | ||||
54 | int | |||
55 | lg_checkarg(char *arg) | |||
56 | { | |||
57 | size_t len; | |||
58 | u_int i; | |||
59 | ||||
60 | if (!(len = strlen(arg))) | |||
61 | return (0); | |||
62 | ||||
63 | #define allowed_in_string(_x) \ | |||
64 | ((isalnum((unsigned char)_x) || isprint((unsigned char)_x)) && \ | |||
65 | (_x != '%' && _x != '\\' && _x != ';' && _x != '&' && _x != '|')) | |||
66 | ||||
67 | for (i = 0; i < len; i++) { | |||
68 | if (!allowed_in_string(arg[i])) { | |||
69 | fprintf(stderr(&__sF[2]), "invalid character in input\n"); | |||
70 | return (EPERM1); | |||
71 | } | |||
72 | } | |||
73 | #undef allowed_in_string | |||
74 | return (0); | |||
75 | } | |||
76 | ||||
77 | char ** | |||
78 | lg_arg2argv(char *arg, int *argc) | |||
79 | { | |||
80 | char **argv, *ptr = arg; | |||
81 | size_t len; | |||
82 | u_int i, c = 1; | |||
83 | ||||
84 | if (lg_checkarg(arg) != 0) | |||
85 | return (NULL((void *)0)); | |||
86 | if (!(len = strlen(arg))) | |||
87 | return (NULL((void *)0)); | |||
88 | ||||
89 | /* Count elements */ | |||
90 | for (i = 0; i < len; i++) { | |||
91 | if (isspace((unsigned char)arg[i])) { | |||
92 | /* filter out additional options */ | |||
93 | if (arg[i + 1] == '-') { | |||
94 | printf("invalid input\n"); | |||
95 | return (NULL((void *)0)); | |||
96 | } | |||
97 | arg[i] = '\0'; | |||
98 | c++; | |||
99 | } | |||
100 | } | |||
101 | if (arg[0] == '\0') | |||
102 | return (NULL((void *)0)); | |||
103 | ||||
104 | /* Generate array */ | |||
105 | if ((argv = calloc(c + 1, sizeof(char *))) == NULL((void *)0)) { | |||
106 | printf("fatal error: %s\n", strerror(errno(*__errno()))); | |||
107 | return (NULL((void *)0)); | |||
108 | } | |||
109 | ||||
110 | argv[c] = NULL((void *)0); | |||
111 | *argc = c; | |||
112 | ||||
113 | /* Fill array */ | |||
114 | for (i = c = 0; i < len; i++) { | |||
115 | if (arg[i] == '\0' || i
| |||
116 | if (i
| |||
117 | ptr = &arg[i + 1]; | |||
118 | argv[c++] = ptr; | |||
119 | } | |||
120 | } | |||
121 | ||||
122 | return (argv); | |||
123 | } | |||
124 | ||||
125 | char ** | |||
126 | lg_argextra(char **argv, int argc, int off, struct cmd *cmdp) | |||
127 | { | |||
128 | char **new_argv; | |||
129 | int i, c = 0, n; | |||
130 | ||||
131 | if ((n = argc - off) < 0) | |||
132 | return (NULL((void *)0)); | |||
133 | ||||
134 | /* Count elements */ | |||
135 | for (i = 0; cmdp->earg[i] != NULL((void *)0); i++) | |||
136 | c++; | |||
137 | ||||
138 | /* Generate array */ | |||
139 | if ((new_argv = calloc(c + n + 1, sizeof(char *))) == NULL((void *)0)) { | |||
140 | printf("fatal error: %s\n", strerror(errno(*__errno()))); | |||
141 | return (NULL((void *)0)); | |||
142 | } | |||
143 | ||||
144 | /* Fill array */ | |||
145 | for (i = c = 0; cmdp->earg[i] != NULL((void *)0); i++) | |||
146 | new_argv[c++] = cmdp->earg[i]; | |||
147 | ||||
148 | /* Append old array */ | |||
149 | for (i = n; i < argc; i++) | |||
150 | new_argv[c++] = argv[i]; | |||
151 | ||||
152 | new_argv[c] = NULL((void *)0); | |||
153 | ||||
154 | free(argv); | |||
155 | ||||
156 | return (new_argv); | |||
157 | } | |||
158 | ||||
159 | int | |||
160 | lg_checkcmd(int argc, char **argv, int *off, struct cmd *cmd) | |||
161 | { | |||
162 | char **cmdp = NULL((void *)0), *cmdstr = NULL((void *)0); | |||
163 | int i, ncmd, v, ret = -1; | |||
164 | ||||
165 | if ((cmdstr = strdup(cmd->name)) == NULL((void *)0)) | |||
166 | goto done; | |||
167 | if ((cmdp = lg_arg2argv(cmdstr, &ncmd)) == NULL((void *)0)) | |||
168 | goto done; | |||
169 | if (ncmd > argc || argc > (ncmd + cmd->maxargs)) | |||
170 | goto done; | |||
171 | ||||
172 | for (i = 0; i < ncmd; i++) | |||
173 | if (strcmp(argv[i], cmdp[i]) != 0) | |||
174 | goto done; | |||
175 | ||||
176 | if ((v = argc - ncmd) < 0 || | |||
177 | (*off != -1 && *off < v)) | |||
178 | goto done; | |||
179 | if (cmd->minargs && v < cmd->minargs) { | |||
180 | ret = EINVAL22; | |||
181 | goto done; | |||
182 | } | |||
183 | *off = v; | |||
184 | ret = 0; | |||
185 | ||||
186 | done: | |||
187 | free(cmdp); | |||
188 | free(cmdstr); | |||
189 | return (ret); | |||
190 | } | |||
191 | ||||
192 | char * | |||
193 | lg_completion(const char *str, int state) | |||
194 | { | |||
195 | static int lg_complidx, len; | |||
196 | const char *name; | |||
197 | ||||
198 | if (state == 0) { | |||
199 | len = strlen(str); | |||
200 | lg_complidx = 0; | |||
201 | } | |||
202 | while ((name = cmds[lg_complidx].name) != NULL((void *)0)) { | |||
203 | lg_complidx++; | |||
204 | if (strncmp(name, str, len) == 0) | |||
205 | return (strdup(name)); | |||
206 | } | |||
207 | ||||
208 | return (NULL((void *)0)); | |||
209 | } | |||
210 | ||||
211 | int | |||
212 | main(void) | |||
213 | { | |||
214 | struct cmd *cmd = NULL((void *)0); | |||
215 | char prompt[HOST_NAME_MAX255+1], *line, **argp = NULL((void *)0); | |||
216 | int ncmd, ret, v = -1; | |||
217 | u_int i; | |||
218 | ||||
219 | rl_readline_name = NAME"bgplg"; | |||
220 | rl_completion_entry_function = lg_completion; | |||
221 | ||||
222 | /* Ignore the whitespace character */ | |||
223 | rl_basic_word_break_characters = "\t\n\"\\'`@$><=;|&{("; | |||
224 | ||||
225 | while (!quit) { | |||
| ||||
226 | v = -1; | |||
227 | gethostname(prompt, sizeof(prompt) - 2); | |||
228 | strlcat(prompt, "> ", sizeof(prompt)); | |||
229 | ||||
230 | if ((line = readline(prompt)) == NULL((void *)0)) { | |||
231 | printf("\n"); | |||
232 | lg_help(cmds, NULL((void *)0)); | |||
233 | continue; | |||
234 | } | |||
235 | if (!lg_strip(line)) | |||
236 | goto next; | |||
237 | if (strcmp(line, "exit") == 0) { | |||
238 | quit = 1; | |||
239 | goto next; | |||
240 | } | |||
241 | ||||
242 | add_history(line); | |||
243 | ||||
244 | if ((argp = lg_arg2argv(line, &ncmd)) == NULL((void *)0)) | |||
245 | goto next; | |||
246 | ||||
247 | for (i = 0; cmds[i].name != NULL((void *)0); i++) { | |||
248 | ret = lg_checkcmd(ncmd, argp, &v, &cmds[i]); | |||
249 | if (ret
| |||
250 | cmd = &cmds[i]; | |||
251 | else if (ret == EINVAL22) { | |||
252 | printf("invalid number of arguments\n"); | |||
253 | goto next; | |||
254 | } | |||
255 | } | |||
256 | ||||
257 | if (cmd
| |||
258 | printf("invalid command\n"); | |||
259 | } else if (cmd->func != NULL((void *)0)) { | |||
260 | cmd->func(cmds, argp); | |||
261 | } else { | |||
262 | if ((argp = lg_argextra(argp, ncmd, v, cmd)) == NULL((void *)0)) | |||
263 | goto next; | |||
264 | lg_exec(cmd->earg[0], argp); | |||
265 | } | |||
266 | ||||
267 | next: | |||
268 | free(argp); | |||
| ||||
269 | argp = NULL((void *)0); | |||
270 | free(line); | |||
271 | line = NULL((void *)0); | |||
272 | cmd = NULL((void *)0); | |||
273 | } | |||
274 | ||||
275 | return (0); | |||
276 | } |