1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
|
/*
* Copyright (c) 2015-16 David Lamparter, for NetDEF, Inc.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <pthread.h>
#include <signal.h>
#include <inttypes.h>
#include "ferr.h"
#include "vty.h"
#include "jhash.h"
#include "memory.h"
#include "hash.h"
#include "command.h"
#include "json.h"
#include "linklist.h"
DEFINE_MTYPE_STATIC(LIB, ERRINFO, "error information")
/*
* Thread-specific key for temporary storage of allocated ferr.
*/
static pthread_key_t errkey;
static void ferr_free(void *arg)
{
XFREE(MTYPE_ERRINFO, arg);
}
static void err_key_init(void) __attribute__((_CONSTRUCTOR(500)));
static void err_key_init(void)
{
pthread_key_create(&errkey, ferr_free);
}
static void err_key_fini(void) __attribute__((_DESTRUCTOR(500)));
static void err_key_fini(void)
{
pthread_key_delete(errkey);
}
/*
* Global shared hash table holding reference text for all defined errors.
*/
pthread_mutex_t refs_mtx = PTHREAD_MUTEX_INITIALIZER;
struct hash *refs;
static int ferr_hash_cmp(const void *a, const void *b)
{
const struct log_ref *f_a = a;
const struct log_ref *f_b = b;
return f_a->code == f_b->code;
}
static inline unsigned int ferr_hash_key(void *a)
{
struct log_ref *f = a;
return f->code;
}
void log_ref_add(struct log_ref *ref)
{
uint32_t i = 0;
pthread_mutex_lock(&refs_mtx);
{
while (ref[i].code != END_FERR) {
hash_get(refs, &ref[i], hash_alloc_intern);
i++;
}
}
pthread_mutex_unlock(&refs_mtx);
}
struct log_ref *log_ref_get(uint32_t code)
{
struct log_ref holder;
struct log_ref *ref;
holder.code = code;
pthread_mutex_lock(&refs_mtx);
{
ref = hash_lookup(refs, &holder);
}
pthread_mutex_unlock(&refs_mtx);
return ref;
}
void log_ref_display(struct vty *vty, uint32_t code, bool json)
{
struct log_ref *ref;
struct json_object *top = NULL, *obj = NULL;
struct list *errlist;
struct listnode *ln;
if (json)
top = json_object_new_object();
pthread_mutex_lock(&refs_mtx);
{
errlist = code ? list_new() : hash_to_list(refs);
}
pthread_mutex_unlock(&refs_mtx);
if (code) {
ref = log_ref_get(code);
if (!ref) {
vty_out(vty, "Code %"PRIu32" - Unknown\n", code);
return;
}
listnode_add(errlist, ref);
}
for (ALL_LIST_ELEMENTS_RO(errlist, ln, ref)) {
if (json) {
char key[11];
snprintf(key, sizeof(key), "%"PRIu32, ref->code);
obj = json_object_new_object();
json_object_string_add(obj, "title", ref->title);
json_object_string_add(obj, "description",
ref->description);
json_object_string_add(obj, "suggestion",
ref->suggestion);
json_object_object_add(top, key, obj);
} else {
char pbuf[256];
char ubuf[256];
snprintf(pbuf, sizeof(pbuf), "\nError %"PRIu32" - %s",
ref->code, ref->title);
memset(ubuf, '=', strlen(pbuf));
ubuf[strlen(pbuf)] = '\0';
vty_out(vty, "%s\n%s\n", pbuf, ubuf);
vty_out(vty, "Description:\n%s\n\n", ref->description);
vty_out(vty, "Recommendation:\n%s\n", ref->suggestion);
}
}
if (json) {
const char *str = json_object_to_json_string_ext(
top, JSON_C_TO_STRING_PRETTY);
vty_out(vty, "%s\n", str);
json_object_free(top);
}
list_delete(&errlist);
}
DEFUN_NOSH(show_error_code,
show_error_code_cmd,
"show error <(1-4294967296)|all> [json]",
SHOW_STR
"Information on errors\n"
"Error code to get info about\n"
"Information on all errors\n"
JSON_STR)
{
bool json = strmatch(argv[argc-1]->text, "json");
uint32_t arg = 0;
if (!strmatch(argv[2]->text, "all"))
arg = strtoul(argv[2]->arg, NULL, 10);
log_ref_display(vty, arg, json);
return CMD_SUCCESS;
}
void log_ref_init(void)
{
pthread_mutex_lock(&refs_mtx);
{
refs = hash_create(ferr_hash_key, ferr_hash_cmp,
"Error Reference Texts");
}
pthread_mutex_unlock(&refs_mtx);
install_element(VIEW_NODE, &show_error_code_cmd);
}
void log_ref_fini(void)
{
pthread_mutex_lock(&refs_mtx);
{
hash_clean(refs, NULL);
hash_free(refs);
refs = NULL;
}
pthread_mutex_unlock(&refs_mtx);
}
const struct ferr *ferr_get_last(ferr_r errval)
{
struct ferr *last_error = pthread_getspecific(errkey);
if (!last_error || last_error->kind == 0)
return NULL;
return last_error;
}
ferr_r ferr_clear(void)
{
struct ferr *last_error = pthread_getspecific(errkey);
if (last_error)
last_error->kind = 0;
return ferr_ok();
}
static ferr_r ferr_set_va(const char *file, int line, const char *func,
enum ferr_kind kind, const char *pathname,
int errno_val, const char *text, va_list va)
{
struct ferr *error = pthread_getspecific(errkey);
if (!error) {
error = XCALLOC(MTYPE_ERRINFO, sizeof(*error));
pthread_setspecific(errkey, error);
}
error->file = file;
error->line = line;
error->func = func;
error->kind = kind;
error->unique_id = jhash(text, strlen(text),
jhash(file, strlen(file), 0xd4ed0298));
error->errno_val = errno_val;
if (pathname)
snprintf(error->pathname, sizeof(error->pathname), "%s",
pathname);
else
error->pathname[0] = '\0';
vsnprintf(error->message, sizeof(error->message), text, va);
return -1;
}
ferr_r ferr_set_internal(const char *file, int line, const char *func,
enum ferr_kind kind, const char *text, ...)
{
ferr_r rv;
va_list va;
va_start(va, text);
rv = ferr_set_va(file, line, func, kind, NULL, 0, text, va);
va_end(va);
return rv;
}
ferr_r ferr_set_internal_ext(const char *file, int line, const char *func,
enum ferr_kind kind, const char *pathname,
int errno_val, const char *text, ...)
{
ferr_r rv;
va_list va;
va_start(va, text);
rv = ferr_set_va(file, line, func, kind, pathname, errno_val, text, va);
va_end(va);
return rv;
}
#define REPLACE "$ERR"
void vty_print_error(struct vty *vty, ferr_r err, const char *msg, ...)
{
char tmpmsg[512], *replacepos;
const struct ferr *last_error = ferr_get_last(err);
va_list va;
va_start(va, msg);
vsnprintf(tmpmsg, sizeof(tmpmsg), msg, va);
va_end(va);
replacepos = strstr(tmpmsg, REPLACE);
if (!replacepos)
vty_out(vty, "%s\n", tmpmsg);
else {
replacepos[0] = '\0';
replacepos += sizeof(REPLACE) - 1;
vty_out(vty, "%s%s%s\n", tmpmsg,
last_error ? last_error->message : "(no error?)",
replacepos);
}
}
|