2 * env.c -- small service routines
4 * For license terms, see the file COPYING in this directory.
10 #if defined(STDC_HEADERS)
13 #if defined(HAVE_UNISTD_H)
19 #ifdef HAVE_GETHOSTBYNAME
21 #endif /* HAVE_GETHOSTBYNAME */
22 #ifndef HAVE_STRFTIME /* For ctime prototype */
23 #include <sys/types.h>
26 #include "fetchmail.h"
28 extern char *getenv(); /* needed on sysV68 R3V7.1. */
30 extern char *program_name;
32 void envquery(int argc, char **argv)
33 /* set up basic stuff from the environment (including the rc file name) */
37 if ((program_name = strrchr(argv[0], '/')) != NULL)
40 program_name = argv[0];
42 if ((user = getenv("USER")) == (char *)NULL)
43 user = getenv("LOGNAME");
45 if ((user == (char *)NULL) || (home = getenv("HOME")) == (char *)NULL)
47 if ((pw = getpwuid(getuid())) != NULL)
55 "%s: can't find your name and home directory!\n",
61 #define RCFILE_NAME ".fetchmailrc"
62 rcfile = (char *) xmalloc(strlen(home)+strlen(RCFILE_NAME)+2);
63 /* avoid //.fetchmailrc */
64 if (strcmp(home, "/") != 0) {
70 strcat(rcfile, RCFILE_NAME);
74 /* get the FQDN of the machine we're running */
76 char tmpbuf[HOSTLEN+1];
78 if (gethostname(tmpbuf, sizeof(tmpbuf)))
80 fprintf(stderr, "%s: can't determine your host!",
84 #ifdef HAVE_GETHOSTBYNAME
85 /* if we got a . in the hostname assume it is a FQDN */
86 if (strchr(tmpbuf, '.') == NULL)
90 /* if we got a basename (as we do in Linux) make a FQDN of it */
91 hp = gethostbyname(tmpbuf);
92 if (hp == (struct hostent *) NULL)
94 /* exit with error message */
96 "gethostbyname failed for %s\n", tmpbuf);
99 return(xstrdup(hp->h_name));
102 #endif /* HAVE_GETHOSTBYNAME */
103 return(xstrdup(tmpbuf));
106 char *rfc822timestamp(void)
107 /* return a timestamp in RFC822 form */
115 * Conform to RFC822. This is typically going to emit
116 * a three-letter timezone for %Z, which is going to
117 * be marked "obsolete syntax" in 822bis. Note that we
118 * generate a 4-digit year here, avoiding Y2K hassles.
119 * Note: max length of this timestamp in an English locale
120 * should be 29 chars, assuming a 3-character timezone.
122 strftime(buf, sizeof(buf)-1,
123 "%a, %d %b %Y %H:%M:%S %Z", localtime(&now));
126 * This is really just a portability fallback, as the
127 * date format ctime(3) emits is not RFC822
130 strcpy(buf, ctime(&now));
131 buf[strlen(buf)-1] = '\0'; /* remove trailing \n */
132 #endif /* HAVE_STRFTIME */
137 const char *showproto(int proto)
138 /* protocol index to protocol name mapping */
142 case P_AUTO: return("auto"); break;
144 case P_POP2: return("POP2"); break;
145 #endif /* POP2_ENABLE */
146 case P_POP3: return("POP3"); break;
147 case P_IMAP: return("IMAP"); break;
148 case P_IMAP_K4: return("IMAP-K4"); break;
150 case P_IMAP_GSS: return("IMAP-GSS"); break;
152 case P_APOP: return("APOP"); break;
153 case P_RPOP: return("RPOP"); break;
154 case P_ETRN: return("ETRN"); break;
155 default: return("unknown?!?"); break;
159 char *visbuf(const char *buf)
160 /* visibilize a given string */
162 static char vbuf[BUFSIZ];
169 *tp++ = '\\'; *tp++ = '"';
172 else if (isprint(*buf) || *buf == ' ')
174 else if (*buf == '\n')
176 *tp++ = '\\'; *tp++ = 'n';
179 else if (*buf == '\r')
181 *tp++ = '\\'; *tp++ = 'r';
184 else if (*buf == '\b')
186 *tp++ = '\\'; *tp++ = 'b';
191 *tp++ = '\\'; *tp++ = '^'; *tp++ = '@' + *buf;
196 (void) sprintf(tp, "\\0x%02x", *buf++);
204 /* env.c ends here */