fetchmail - [fork] set imap idle timeout to 600s, some servers don't follow rfc recommendations

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Diffstat (limited to 'contrib/fetchmaildistrib')

0 files changed, 0 insertions, 0 deletions

/* * env.c -- small service routines * * Copyright 1998 by Eric S. Raymond * For license terms, see the file COPYING in this directory. */ #include "config.h" #include <stdio.h> #include <ctype.h> #if defined(STDC_HEADERS) #include <stdlib.h> #endif #if defined(HAVE_UNISTD_H) #include <unistd.h> #endif #include <pwd.h> #include <string.h> #ifdef HAVE_NET_SOCKET_H #include <net/socket.h> #endif #ifdef HAVE_GETHOSTBYNAME #include <netdb.h> #endif /* HAVE_GETHOSTBYNAME */ #include <sys/types.h> #include <time.h> #include "fetchmail.h" #include "i18n.h" extern char *getenv(); /* needed on sysV68 R3V7.1. */ extern char *program_name; void envquery(int argc, char **argv) /* set up basic stuff from the environment (including the rc file name) */ { struct passwd by_name, by_uid, *pwp; (user = getenv("FETCHMAILUSER")) || (user = getenv("LOGNAME")) || (user = getenv("USER")); if (!(pwp = getpwuid(getuid()))) { fprintf(stderr, _("%s: You don't exist. Go away.\n"), program_name); exit(PS_UNDEFINED); } else { memcpy(&by_uid, pwp, sizeof(struct passwd)); if (!user || !(pwp = getpwnam(user))) pwp = &by_uid; else { /* * This logic is needed to handle gracefully the possibility * that multiple names might be mapped to one UID. */ memcpy(&by_name, pwp, sizeof(struct passwd)); if (by_name.pw_uid == by_uid.pw_uid) pwp = &by_name; else pwp = &by_uid; } user = xstrdup(pwp->pw_name); } /* compute user's home directory */ if (!(home = getenv("HOME"))) home = pwp->pw_dir; /* compute fetchmail's home directory */ if (!(fmhome = getenv("FETCHMAILHOME"))) fmhome = home; if ((program_name = strrchr(argv[0], '/')) != NULL) ++program_name; else program_name = argv[0]; #define RCFILE_NAME "fetchmailrc" /* * The (fmhome==home) leaves an extra character for a . at the * beginning of the rc file's name, iff fetchmail is using $HOME * for its files. We don't want to do that if fetchmail has its * own home ($FETCHMAILHOME), however. */ rcfile = (char *)xmalloc(strlen(fmhome)+sizeof(RCFILE_NAME)+(fmhome==home)+2); /* avoid //.fetchmailrc */ if (strcmp(fmhome, "/") != 0) strcpy(rcfile, fmhome); else *rcfile = '\0'; if (rcfile[strlen(rcfile) - 1] != '/') strcat(rcfile, "/"); if (fmhome==home) strcat(rcfile, "."); strcat(rcfile, RCFILE_NAME); } char *host_fqdn(void) /* get the FQDN of the machine we're running */ { char tmpbuf[HOSTLEN+1]; if (gethostname(tmpbuf, sizeof(tmpbuf))) { fprintf(stderr, _("%s: can't determine your host!"), program_name); exit(PS_DNS); } #ifdef HAVE_GETHOSTBYNAME /* if we got a . in the hostname assume it is a FQDN */ if (strchr(tmpbuf, '.') == NULL) { struct hostent *hp; /* if we got a basename (as we do in Linux) make a FQDN of it */ hp = gethostbyname(tmpbuf); if (hp == (struct hostent *) NULL) { /* exit with error message */ fprintf(stderr, _("gethostbyname failed for %s\n"), tmpbuf); exit(PS_DNS); } return(xstrdup(hp->h_name)); } else #endif /* HAVE_GETHOSTBYNAME */ return(xstrdup(tmpbuf)); } static char *tzoffset(time_t *now) /* calculate timezone offset */ { static char offset_string[6]; struct tm gmt, *lt; int off; char sign = '+'; gmt = *gmtime(now); lt = localtime(now); off = (lt->tm_hour - gmt.tm_hour) * 60 + lt->tm_min - gmt.tm_min; if (lt->tm_year < gmt.tm_year) off -= 24 * 60; else if (lt->tm_year > gmt.tm_year) off += 24 * 60; else if (lt->tm_yday < gmt.tm_yday) off -= 24 * 60; else if (lt->tm_yday > gmt.tm_yday) off += 24 * 60; if (off < 0) { sign = '-'; off = -off; } if (off >= 24 * 60) /* should be impossible */ off = 23 * 60 + 59; /* if not, insert silly value */ sprintf(offset_string, "%c%02d%02d", sign, off / 60, off % 60); return (offset_string); } char *rfc822timestamp(void) /* return a timestamp in RFC822 form */ { time_t now; static char buf[50]; time(&now); #ifdef HAVE_STRFTIME /* * Conform to RFC822. We generate a 4-digit year here, avoiding * Y2K hassles. Max length of this timestamp in an English locale * should be 29 chars. The only things that should vary by locale * are the day and month abbreviations. */ strftime(buf, sizeof(buf)-1, "%a, %d %b %Y %H:%M:%S XXXXX (%Z)", localtime(&now)); strncpy(strstr(buf, "XXXXX"), tzoffset(&now), 5); #else /* * This is really just a portability fallback, as the * date format ctime(3) emits is not RFC822 * conformant. */ strcpy(buf, ctime(&now)); buf[strlen(buf)-1] = '\0'; /* remove trailing \n */ #endif /* HAVE_STRFTIME */ return(buf); } const char *showproto(int proto) /* protocol index to protocol name mapping */ { switch (proto) { case P_AUTO: return("auto"); #ifdef POP2_ENABLE case P_POP2: return("POP2"); #endif /* POP2_ENABLE */ case P_POP3: return("POP3"); case P_IMAP: return("IMAP"); case P_IMAP_K4: return("IMAP-K4"); #ifdef GSSAPI case P_IMAP_GSS: return("IMAP-GSS"); #endif /* GSSAPI */ case P_IMAP_CRAM_MD5: return("IMAP-LOGIN"); case P_IMAP_LOGIN: return("IMAP-LOGIN"); case P_APOP: return("APOP"); case P_RPOP: return("RPOP"); case P_ETRN: return("ETRN"); #ifdef ODMR_ENABLE case P_ODMR: return("ODMR"); #endif /* ODMR_ENABLE */ default: return("unknown?!?"); } } char *visbuf(const char *buf) /* visibilize a given string */ { static char vbuf[BUFSIZ]; char *tp = vbuf; while (*buf) { if (*buf == '"') { *tp++ = '\\'; *tp++ = '"'; buf++; } else if (*buf == '\\') { *tp++ = '\\'; *tp++ = '\\'; buf++; } else if (isprint(*buf) || *buf == ' ') *tp++ = *buf++; else if (*buf == '\n') { *tp++ = '\\'; *tp++ = 'n'; buf++; } else if (*buf == '\r') { *tp++ = '\\'; *tp++ = 'r'; buf++; } else if (*buf == '\b') { *tp++ = '\\'; *tp++ = 'b'; buf++; } else if (*buf < ' ') { *tp++ = '\\'; *tp++ = '^'; *tp++ = '@' + *buf; buf++; } else { (void) sprintf(tp, "\\0x%02x", *buf++); tp += strlen(tp); } } *tp++ = '\0'; return(vbuf); } /* env.c ends here */


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