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