1 /* opkg_message.c - the opkg package management system
2
3 Copyright (C) 2009 Ubiq Technologies <graham.gower@gmail.com>
4 Copyright (C) 2003 Daniele Nicolodi <daniele@grinta.net>
5
6 This program is free software; you can redistribute it and/or
7 modify it under the terms of the GNU General Public License as
8 published by the Free Software Foundation; either version 2, or (at
9 your option) any later version.
10
11 This program is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
15 */
16
17 #include <stdio.h>
18
19 #include "opkg_conf.h"
20 #include "opkg_message.h"
21 #include "libbb/libbb.h"
22
23 struct errlist {
24 char *errmsg;
25 struct errlist *next;
26 };
27
28 static struct errlist *error_list_head, *error_list_tail;
29
push_error_list(char * msg)30 static void push_error_list(char *msg)
31 {
32 struct errlist *e;
33
34 e = xcalloc(1, sizeof(struct errlist));
35 e->errmsg = xstrdup(msg);
36 e->next = NULL;
37
38 if (error_list_head) {
39 error_list_tail->next = e;
40 error_list_tail = e;
41 } else {
42 error_list_head = error_list_tail = e;
43 }
44 }
45
free_error_list(void)46 void free_error_list(void)
47 {
48 struct errlist *err, *err_tmp;
49
50 err = error_list_head;
51 while (err != NULL) {
52 free(err->errmsg);
53 err_tmp = err;
54 err = err->next;
55 free(err_tmp);
56 }
57 }
58
print_error_list(void)59 void print_error_list(void)
60 {
61 struct errlist *err = error_list_head;
62
63 if (err) {
64 fprintf(stderr, "Collected errors:\n");
65 /* Here we print the errors collected and free the list */
66 while (err != NULL) {
67 fprintf(stderr, " * %s", err->errmsg);
68 err = err->next;
69 }
70 }
71 }
72
opkg_message(message_level_t level,const char * fmt,...)73 void opkg_message(message_level_t level, const char *fmt, ...)
74 {
75 va_list ap;
76
77 if (conf->verbosity < level)
78 return;
79
80 if (conf->opkg_vmessage) {
81 /* Pass the message to libopkg users. */
82 va_start(ap, fmt);
83 conf->opkg_vmessage(level, fmt, ap);
84 va_end(ap);
85 return;
86 }
87
88 va_start(ap, fmt);
89
90 if (level == ERROR) {
91 #define MSG_LEN 4096
92 char msg[MSG_LEN];
93 int ret;
94 ret = vsnprintf(msg, MSG_LEN, fmt, ap);
95 if (ret < 0) {
96 fprintf(stderr, "%s: encountered an output or encoding"
97 " error during vsnprintf.\n", __FUNCTION__);
98 va_end(ap);
99 exit(EXIT_FAILURE);
100 }
101 if (ret >= MSG_LEN) {
102 fprintf(stderr, "%s: Message truncated.\n",
103 __FUNCTION__);
104 }
105 push_error_list(msg);
106 } else {
107 if (vprintf(fmt, ap) < 0) {
108 fprintf(stderr, "%s: encountered an output or encoding"
109 " error during vprintf.\n", __FUNCTION__);
110 exit(EXIT_FAILURE);
111 }
112 }
113
114 va_end(ap);
115 }
116