1 /* Public domain fmtmsg()
2 * Written by Isaac Dunham, 2014
3 */
4 #include <fmtmsg.h>
5 #include <fcntl.h>
6 #include <unistd.h>
7 #include <stdio.h>
8 #include <string.h>
9 #include <stdlib.h>
10 #include <pthread.h>
11
12 /*
13 * If lstr is the first part of bstr, check that the next char in bstr
14 * is either \0 or :
15 */
_strcolcmp(const char * lstr,const char * bstr)16 static int _strcolcmp(const char *lstr, const char *bstr)
17 {
18 size_t i = 0;
19 while (lstr[i] && bstr[i] && (bstr[i] == lstr[i])) i++;
20 if ( lstr[i] || (bstr[i] && bstr[i] != ':')) return 1;
21 return 0;
22 }
23
fmtmsg(long classification,const char * label,int severity,const char * text,const char * action,const char * tag)24 int fmtmsg(long classification, const char *label, int severity,
25 const char *text, const char *action, const char *tag)
26 {
27 int ret = 0, i, consolefd, verb = 0;
28 char *errstring = MM_NULLSEV, *cmsg = getenv("MSGVERB");
29 char *const msgs[] = {
30 "label", "severity", "text", "action", "tag", NULL
31 };
32 int cs;
33
34 pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, &cs);
35
36 if (severity == MM_HALT) errstring = "HALT: ";
37 else if (severity == MM_ERROR) errstring = "ERROR: ";
38 else if (severity == MM_WARNING) errstring = "WARNING: ";
39 else if (severity == MM_INFO) errstring = "INFO: ";
40
41 if (classification & MM_CONSOLE) {
42 consolefd = open("/dev/console", O_WRONLY);
43 if (consolefd < 0) {
44 ret = MM_NOCON;
45 } else {
46 if (dprintf(consolefd, "%s%s%s%s%s%s%s%s\n",
47 label?label:"", label?": ":"",
48 severity?errstring:"", text?text:"",
49 action?"\nTO FIX: ":"",
50 action?action:"", action?" ":"",
51 tag?tag:"" )<1)
52 ret = MM_NOCON;
53 close(consolefd);
54 }
55 }
56
57 if (classification & MM_PRINT) {
58 while (cmsg && cmsg[0]) {
59 for(i=0; msgs[i]; i++) {
60 if (!_strcolcmp(msgs[i], cmsg)) break;
61 }
62 if (msgs[i] == NULL) {
63 //ignore MSGVERB-unrecognized component
64 verb = 0xFF;
65 break;
66 } else {
67 verb |= (1 << i);
68 cmsg = strchr(cmsg, ':');
69 if (cmsg) cmsg++;
70 }
71 }
72 if (!verb) verb = 0xFF;
73 if (dprintf(2, "%s%s%s%s%s%s%s%s\n",
74 (verb&1 && label) ? label : "",
75 (verb&1 && label) ? ": " : "",
76 (verb&2 && severity) ? errstring : "",
77 (verb&4 && text) ? text : "",
78 (verb&8 && action) ? "\nTO FIX: " : "",
79 (verb&8 && action) ? action : "",
80 (verb&8 && action) ? " " : "",
81 (verb&16 && tag) ? tag : "" ) < 1)
82 ret |= MM_NOMSG;
83 }
84 if ((ret & (MM_NOCON|MM_NOMSG)) == (MM_NOCON|MM_NOMSG))
85 ret = MM_NOTOK;
86
87 pthread_setcancelstate(cs, 0);
88
89 return ret;
90 }
91