#endif
#include <pwd.h>
#include <string.h>
-#include <ctype.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"
+#if defined(HAVE_SETLOCALE) && defined(ENABLE_NLS) && defined(HAVE_STRFTIME)
+#include <locale.h>
+#endif
-extern char *getenv(); /* needed on sysV68 R3V7.1. */
-
-extern char *program_name;
+extern char *getenv(const char *); /* needed on sysV68 R3V7.1. */
void envquery(int argc, char **argv)
/* set up basic stuff from the environment (including the rc file name) */
{
- struct passwd *pw;
+ struct passwd by_name, by_uid, *pwp;
+
+ if (!(user = getenv("FETCHMAILUSER")))
+ {
+ if (!(user = getenv("LOGNAME")))
+ {
+ user = getenv("USER");
+ }
+ }
if ((program_name = strrchr(argv[0], '/')) != NULL)
++program_name;
else
program_name = argv[0];
- if ((user = getenv("USER")) == (char *)NULL)
- user = getenv("LOGNAME");
+ if (getenv("QMAILINJECT") && strcmp(getenv("QMAILINJECT"), ""))
+ {
+ fprintf(stderr,
+ GT_("%s: The QMAILINJECT environment variable is set.\n"
+ "This is dangerous as it can make qmail-inject or qmail's sendmail wrapper\n"
+ "tamper with your From: or Message-ID: headers.\n"
+ "Try \"env QMAILINJECT= %s YOUR ARGUMENTS HERE\"\n"
+ "%s: Abort.\n"),
+ program_name, program_name, program_name);
+ exit(PS_UNDEFINED);
+ }
- if ((user == (char *)NULL) || (home = getenv("HOME")) == (char *)NULL)
+ if (getenv("NULLMAILER_FLAGS") && strcmp(getenv("NULLMAILER_FLAGS"), ""))
{
- if ((pw = getpwuid(getuid())) != NULL)
- {
- user = pw->pw_name;
- home = pw->pw_dir;
- }
+ fprintf(stderr,
+ GT_("%s: The NULLMAILER_FLAGS environment variable is set.\n"
+ "This is dangerous as it can make nullmailer-inject or nullmailer's\n"
+ "sendmail wrapper tamper with your From:, Message-ID: or Return-Path: headers.\n"
+ "Try \"env NULLMAILER_FLAGS= %s YOUR ARGUMENTS HERE\"\n"
+ "%s: Abort.\n"),
+ program_name, program_name, program_name);
+ exit(PS_UNDEFINED);
+ }
+
+ if (!(pwp = getpwuid(getuid())))
+ {
+ fprintf(stderr,
+ GT_("%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
{
- fprintf(stderr,
- _("%s: can't find your name and home directory!\n"),
- program_name);
- exit(PS_UNDEFINED);
+ /*
+ * 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);
}
-#define RCFILE_NAME ".fetchmailrc"
- rcfile = (char *) xmalloc(strlen(home)+strlen(RCFILE_NAME)+2);
+ /* compute user's home directory */
+ home = getenv("HOME_ETC");
+ if (!home && !(home = getenv("HOME")))
+ home = pwp->pw_dir;
+
+ /* compute fetchmail's home directory */
+ if (!(fmhome = getenv("FETCHMAILHOME")))
+ fmhome = home;
+
+#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(home, "/") != 0) {
- strcpy(rcfile, home);
- } else {
- *rcfile = '\0';
- }
- strcat(rcfile, "/");
+ 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);
}
if (gethostname(tmpbuf, sizeof(tmpbuf)))
{
- fprintf(stderr, _("%s: can't determine your host!"),
+ fprintf(stderr, GT_("%s: can't determine your host!"),
program_name);
exit(PS_DNS);
}
{
/* exit with error message */
fprintf(stderr,
- _("gethostbyname failed for %s\n"), tmpbuf);
+ GT_("gethostbyname failed for %s\n"), tmpbuf);
exit(PS_DNS);
}
return(xstrdup(hp->h_name));
}
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);
+ snprintf(offset_string, sizeof(offset_string),
+ "%c%02d%02d", sign, off / 60, off % 60);
return (offset_string);
}
* 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.
+ * are the day and month abbreviations. The set_locale calls prevent
+ * weird multibyte i18n characters (such as kanji) from showing up
+ * in your Received headers.
*/
+#if defined(HAVE_SETLOCALE) && defined(ENABLE_NLS)
+ setlocale (LC_TIME, "C");
+#endif
strftime(buf, sizeof(buf)-1,
"%a, %d %b %Y %H:%M:%S XXXXX (%Z)", localtime(&now));
+#if defined(HAVE_SETLOCALE) && defined(ENABLE_NLS)
+ setlocale (LC_TIME, "");
+#endif
strncpy(strstr(buf, "XXXXX"), tzoffset(&now), 5);
#else
/*
#ifdef POP2_ENABLE
case P_POP2: return("POP2");
#endif /* POP2_ENABLE */
+#ifdef POP3_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_APOP: return("APOP");
case P_RPOP: return("RPOP");
+#endif /* POP3_ENABLE */
+#ifdef IMAP_ENABLE
+ case P_IMAP: return("IMAP");
+#endif /* IMAP_ENABLE */
+#ifdef ETRN_ENABLE
case P_ETRN: return("ETRN");
+#endif /* ETRN_ENABLE */
+#ifdef ODMR_ENABLE
+ case P_ODMR: return("ODMR");
+#endif /* ODMR_ENABLE */
default: return("unknown?!?");
}
}
*tp++ = '\\'; *tp++ = '"';
buf++;
}
- else if (isprint(*buf) || *buf == ' ')
+ else if (*buf == '\\')
+ {
+ *tp++ = '\\'; *tp++ = '\\';
+ buf++;
+ }
+ else if (isprint((unsigned char)*buf) || *buf == ' ')
*tp++ = *buf++;
else if (*buf == '\n')
{
}
else
{
- (void) sprintf(tp, "\\0x%02x", *buf++);
- tp += strlen(tp);
+ const char hex[] = "0123456789abcdef";
+ *tp++ = '\\'; *tp++ = '0'; *tp++ = 'x';
+ *tp++ = hex[*buf >> 4];
+ *tp++ = hex[*buf & 0xf];
+ buf++;
}
}
*tp++ = '\0';
projects / ~andy / fetchmail / blobdiff