-/* $Cambridge: exim/src/src/buildconfig.c,v 1.7 2005/03/29 14:19:21 ph10 Exp $ */
+/* $Cambridge: exim/src/src/buildconfig.c,v 1.21 2010/06/13 08:26:40 pdp Exp $ */
/*************************************************
* Exim - an Internet mail transport agent *
*************************************************/
-/* Copyright (c) University of Cambridge 1995 - 2005 */
+/* Copyright (c) University of Cambridge 1995 - 2009 */
/* See the file NOTICE for conditions of use and distribution. */
/* This auxiliary program builds the file config.h by the following
process:
-First it reads Makefile, looking for certain OS-specific definitions which it
-uses to define macros. Then it reads the defaults file config.h.defaults.
+First, it determines the size of off_t and time_t variables, and generates
+macro code to define OFF_T_FMT and TIME_T_FMT as suitable formats, if they are
+not already defined in the system-specific header file.
+
+Then it reads Makefile, looking for certain OS-specific definitions which it
+uses to define some specific macros. Finally, it reads the defaults file
+config.h.defaults.
The defaults file contains normal C #define statements for various macros; if
the name of a macro is found in the environment, the environment value replaces
int
main(int argc, char **argv)
{
+off_t test_off_t = 0;
+time_t test_time_t = 0;
+size_t test_size_t = 0;
+unsigned long test_ulong_t = 0L;
+long test_long_t = 0;
FILE *base;
FILE *new;
int last_initial = 'A';
fprintf(new, "Do not edit it. Instead, edit Local/Makefile and "
"rerun make. */\n\n");
-/* First, search the makefile for certain settings */
+/* First, deal with the printing format for off_t variables. We assume that if
+the size of off_t is greater than 4, "%lld" will be available as a format for
+printing long long variables, and there will be support for the long long type.
+This assumption is known to be OK for the common operating systems. */
+
+fprintf(new, "#ifndef OFF_T_FMT\n");
+if (sizeof(test_off_t) > sizeof(test_long_t))
+ {
+ fprintf(new, "#define OFF_T_FMT \"%%lld\"\n");
+ fprintf(new, "#define LONGLONG_T long long int\n");
+ }
+else
+ {
+ fprintf(new, "#define OFF_T_FMT \"%%ld\"\n");
+ fprintf(new, "#define LONGLONG_T long int\n");
+ }
+fprintf(new, "#endif\n\n");
+
+/* Now do the same thing for time_t variables. If the length is greater than
+4, we want to assume long long support (even if off_t was less than 4). If the
+length is 4 or less, we can leave LONGLONG_T to whatever was defined above for
+off_t. */
+
+fprintf(new, "#ifndef TIME_T_FMT\n");
+if (sizeof(test_time_t) > sizeof(test_long_t))
+ {
+ fprintf(new, "#define TIME_T_FMT \"%%lld\"\n");
+ fprintf(new, "#undef LONGLONG_T\n");
+ fprintf(new, "#define LONGLONG_T long long int\n");
+ }
+else
+ {
+ fprintf(new, "#define TIME_T_FMT \"%%ld\"\n");
+ }
+fprintf(new, "#endif\n\n");
+
+/* And for sizeof() results, size_t, which should with C99 be just %zu, deal
+with C99 not being ubiquitous yet. Unfortunately. */
+
+#if __STDC_VERSION__ >= 199901L
+fprintf(new, "#define SIZE_T_FMT \"%%zu\"\n");
+#else
+if (sizeof(test_size_t) > sizeof (test_ulong_t))
+ fprintf(new, "#define SIZE_T_FMT \"%%llu\"\n");
+else
+ fprintf(new, "#define SIZE_T_FMT \"%%lu\"\n");
+#endif
+
+/* Now search the makefile for certain settings */
base = fopen("Makefile", "rb");
if (base == NULL)
{
printf("*** Buildconfig: failed to open Makefile\n");
- fclose(new);
+ (void)fclose(new);
exit(1);
}
if (errno_quota[0] != 0)
fprintf(new, "\n#define ERRNO_QUOTA %s\n", errno_quota);
-if (strcmp(cc, "gcc") == 0 && strstr(ostype, "IRIX") != NULL)
+if (strcmp(cc, "gcc") == 0 &&
+ (strstr(ostype, "IRIX") != NULL || strstr(ostype, "AIX") != NULL))
{
fprintf(new, "\n/* This switch includes the code to fix the inet_ntoa() */");
- fprintf(new, "\n/* bug when using gcc on an IRIX system. */");
+ fprintf(new, "\n/* bug when using gcc on an IRIX or AIX system. */");
fprintf(new, "\n#define USE_INET_NTOA_FIX");
}
fprintf(new, "\n");
-fclose(base);
+(void)fclose(base);
/* Now handle the macros listed in the defaults */
if (base == NULL)
{
printf("*** Buildconfig: failed to open ../src/config.h.defaults\n");
- fclose(new);
+ (void)fclose(new);
exit(1);
}
uid_t uid = 0;
gid_t gid = 0;
int gid_set = 0;
+ int uid_not_set = 0;
char *username = NULL;
char *groupname = NULL;
char *s;
while (isspace(*user)) user++;
username = user;
gid_set = 1;
+ uid_not_set = 1;
}
else
return 1;
}
+ /* security sanity checks
+ if ref: is being used, we can never be sure, but we can take reasonable
+ steps to filter out the most obvious ones. */
+
+ if ((!uid_not_set && uid == 0) ||
+ ((username != NULL) && (
+ (strcmp(username, "root") == 0) ||
+ (strcmp(username, "toor") == 0) )))
+ {
+ printf("\n*** Exim's internal user must not be root.\n\n");
+ return 1;
+ }
+
/* Output user and group names or uid/gid. When names are set, uid/gid
are set to zero but will be replaced at runtime. */
{
char *wcs = getenv("WITH_CONTENT_SCAN");
char *wod = getenv("WITH_OLD_DEMIME");
- if (wcs != NULL || wod != NULL)
+ char *dcc = getenv("EXPERIMENTAL_DCC");
+ if (wcs != NULL || wod != NULL || dcc != NULL)
fprintf(new, "#define WITH_CONTENT_SCAN yes\n");
else fprintf(new, "/* WITH_CONTENT_SCAN not set */\n");
continue;
fprintf(new, "\"%s\"\n", value);
}
- /* Timezone values and HEADERS_CHARSET get quoted */
+ /* Timezone values HEADERS_CHARSET, and TCP_WRAPPERS_DAEMON_NAME get quoted */
else if (strcmp(name, "TIMEZONE_DEFAULT") == 0||
+ strcmp(name, "TCP_WRAPPERS_DAEMON_NAME") == 0||
strcmp(name, "HEADERS_CHARSET") == 0)
fprintf(new, "\"%s\"\n", value);
}
}
-fclose(base);
+(void)fclose(base);
/* If any AUTH macros were defined, ensure that SUPPORT_CRYPTEQ is also
defined. */
/* End off */
fprintf(new, "\n/* End of config.h */\n");
-fclose(new);
+(void)fclose(new);
return 0;
}
projects / exim.git / blobdiff