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-rw-r--r--src/buildconfig.c987
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diff --git a/src/buildconfig.c b/src/buildconfig.c
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+++ b/src/buildconfig.c
@@ -0,0 +1,987 @@
+/*************************************************
+* Exim - an Internet mail transport agent *
+*************************************************/
+
+/* Copyright (c) University of Cambridge 1995 - 2018 */
+/* See the file NOTICE for conditions of use and distribution. */
+
+
+/*************************************************
+* Build configuration header for Exim *
+*************************************************/
+
+/* This auxiliary program builds the file config.h by the following
+process:
+
+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
+the default. If the default #define does not contain any value, then that macro
+is not copied to the created file unless there is some value in the
+environment.
+
+This program is compiled and run as part of the Make process and is not
+normally called independently. */
+
+
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/time.h>
+#include <poll.h>
+#include <pwd.h>
+#include <grp.h>
+
+typedef struct {
+ const char *name;
+ int *flag;
+} have_item;
+
+typedef struct {
+ const char *name;
+ char *data;
+} save_item;
+
+static const char *db_opts[] = { "", "USE_DB", "USE_GDBM", "USE_TDB" };
+
+static int have_ipv6 = 0;
+static int have_iconv = 0;
+
+static char errno_quota[256];
+static char ostype[256];
+static char cc[256];
+
+/* If any entry is an initial substring of another, the longer one must
+appear first. */
+
+static have_item have_list[] = {
+ { "HAVE_IPV6", &have_ipv6 },
+ { "HAVE_ICONV", &have_iconv },
+ { NULL, NULL}
+};
+
+static save_item save_list[] = {
+ { "ERRNO_QUOTA", errno_quota },
+ { "OSTYPE", ostype },
+ { "CC", cc },
+ { NULL, NULL}
+};
+
+
+/* Subroutine to check a string for precisely one instance of "%s". If not,
+bomb out. */
+
+void
+check_percent_ess(char *value, char *name)
+{
+int OK = 0;
+char *p = strstr(value, "%s");
+if (p != NULL) OK = strstr(p+2, "%s") == NULL;
+if (!OK)
+ {
+ printf("\n*** \"%s\" (%s) must contain precisely one occurrence of\n"
+ "*** \"%%s\". Please review your build-time configuration.\n\n/", value,
+ name);
+ exit(1);
+ }
+}
+
+
+/* Main program */
+
+int
+main(int argc, char **argv)
+{
+off_t test_off_t = 0;
+time_t test_time_t = 0;
+ino_t test_ino_t;
+#if ! (__STDC_VERSION__ >= 199901L)
+size_t test_size_t = 0;
+ssize_t test_ssize_t = 0;
+unsigned long test_ulong_t = 0L;
+unsigned int test_uint_t = 0;
+#endif
+long test_long_t = 0;
+int test_int_t = 0;
+FILE *base;
+FILE *new;
+int last_initial = 'A';
+int linecount = 0;
+int have_auth = 0;
+int in_local_makefile = 0;
+int use_which_db = 0;
+int use_which_db_in_local_makefile = 0;
+int support_crypteq = 0;
+char buffer[1024];
+
+if (argc != 1)
+ {
+ printf("*** Buildconfig: called with incorrect arguments\n");
+ exit(1);
+ }
+
+new = fopen("config.h", "wb");
+if (new == NULL)
+ {
+ printf("*** Buildconfig: failed to open config.h for output\n");
+ exit(1);
+ }
+
+printf("Building configuration file config.h\n");
+
+fprintf(new, "/*************************************************\n");
+fprintf(new, "* Configuration header for Exim *\n");
+fprintf(new, "*************************************************/\n\n");
+
+fprintf(new, "/* This file was automatically generated from Makefile and "
+ "config.h.defaults,\n");
+fprintf(new, "using values specified in the configuration file Local/Makefile.\n");
+fprintf(new, "Do not edit it. Instead, edit Local/Makefile and "
+ "rerun make. */\n\n");
+
+/* 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");
+
+fprintf(new, "#ifndef INO_T_FMT\n");
+if (sizeof(test_ino_t) > sizeof(test_long_t))
+ fprintf(new, "# define INO_T_FMT \"%%llu\"\n");
+else
+ fprintf(new, "# define INO_T_FMT \"%%lu\"\n");
+fprintf(new, "#endif\n\n");
+
+fprintf(new, "#ifndef PID_T_FMT\n");
+fprintf(new, "# define PID_T_FMT \"%%lu\"\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. Assume ssize_t is same
+size as size_t on C99; if someone comes up with a version where it's not, fix
+it then. */
+
+#if __STDC_VERSION__ >= 199901L
+fprintf(new, "#define SIZE_T_FMT \"%%zu\"\n");
+fprintf(new, "#define SSIZE_T_FMT \"%%zd\"\n");
+#else
+if (sizeof(test_size_t) > sizeof (test_ulong_t))
+ fprintf(new, "#define SIZE_T_FMT \"%%llu\"\n");
+else if (sizeof(test_size_t) > sizeof (test_uint_t))
+ fprintf(new, "#define SIZE_T_FMT \"%%lu\"\n");
+else
+ fprintf(new, "#define SIZE_T_FMT \"%%u\"\n");
+
+if (sizeof(test_ssize_t) > sizeof(test_long_t))
+ fprintf(new, "#define SSIZE_T_FMT \"%%lld\"\n");
+else if (sizeof(test_ssize_t) > sizeof(test_int_t))
+ fprintf(new, "#define SSIZE_T_FMT \"%%ld\"\n");
+else
+ fprintf(new, "#define SSIZE_T_FMT \"%%d\"\n");
+#endif
+
+/* Now search the makefile for certain settings */
+
+base = fopen("Makefile", "rb");
+if (base == NULL)
+ {
+ printf("*** Buildconfig: failed to open Makefile\n");
+ (void)fclose(new);
+ exit(1);
+ }
+
+errno_quota[0] = 0; /* no over-riding value set */
+ostype[0] = 0; /* just in case */
+cc[0] = 0;
+
+while (fgets(buffer, sizeof(buffer), base) != NULL)
+ {
+ int i;
+ have_item *h;
+ save_item *s;
+ char *p = buffer + (int)strlen(buffer);
+ linecount++;
+ while (p > buffer && isspace((unsigned char)p[-1])) p--;
+ *p = 0;
+ p = buffer;
+ while (isspace((unsigned char)*p)) p++;
+
+ /* Notice when we hit the user's makefile */
+
+ if (strcmp(p, "# From Local/Makefile") == 0)
+ {
+ in_local_makefile = 1;
+ continue;
+ }
+
+ /* Remember the last DB option setting. If we hit two in the user's
+ Makefile, complain. */
+
+ for (i = 1; i < sizeof(db_opts)/sizeof(char *); i++)
+ {
+ int len = (int)strlen(db_opts[i]);
+ if (strncmp(p, db_opts[i], len) == 0 && (p[len] == ' ' || p[len] == '='))
+ {
+ if (in_local_makefile)
+ {
+ if (use_which_db_in_local_makefile)
+ {
+ printf("*** Only one of USE_DB, USE_GDBM, or USE_TDB should be "
+ "defined in Local/Makefile\n");
+ exit(1);
+ }
+ use_which_db_in_local_makefile = 1;
+ }
+ use_which_db = i;
+ break;
+ }
+ }
+ if (i < sizeof(db_opts)/sizeof(char *)) continue;
+
+ /* Items where we just save a boolean */
+
+ for (h = have_list; h->name != NULL; h++)
+ {
+ int len = (int)strlen(h->name);
+ if (strncmp(p, h->name, len) == 0)
+ {
+ p += len;
+ while (isspace((unsigned char)*p)) p++;
+ if (*p++ != '=')
+ {
+ printf("*** Buildconfig: syntax error in Makefile line %d\n", linecount);
+ exit(1);
+ }
+ while (isspace((unsigned char)*p)) p++;
+ if (strcmp(p, "YES") == 0 || strcmp(p, "yes") == 0) *(h->flag) = 1;
+ else *(h->flag) = 0; /* Must reset in case multiple instances */
+ break;
+ }
+ }
+
+ if (h->name != NULL) continue;
+
+ /* Items where we save the complete string */
+
+ for (s = save_list; s->name != NULL; s++)
+ {
+ int len = (int)strlen(s->name);
+ if (strncmp(p, s->name, len) == 0)
+ {
+ p += len;
+ while (isspace((unsigned char)*p)) p++;
+ if (*p++ != '=')
+ {
+ printf("*** Buildconfig: syntax error in Makefile line %d\n", linecount);
+ exit(1);
+ }
+ while (isspace((unsigned char)*p)) p++;
+ strcpy(s->data, p);
+ }
+ }
+ }
+
+fprintf(new, "#define HAVE_IPV6 %s\n",
+ have_ipv6? "TRUE" : "FALSE");
+
+fprintf(new, "#define HAVE_ICONV %s\n",
+ have_iconv? "TRUE" : "FALSE");
+
+if (errno_quota[0] != 0)
+ fprintf(new, "\n#define ERRNO_QUOTA %s\n", errno_quota);
+
+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 or AIX system. */");
+ fprintf(new, "\n#define USE_INET_NTOA_FIX");
+ }
+
+fprintf(new, "\n");
+(void)fclose(base);
+
+
+/* Now handle the macros listed in the defaults */
+
+base = fopen("../src/config.h.defaults", "rb");
+if (base == NULL)
+ {
+ printf("*** Buildconfig: failed to open ../src/config.h.defaults\n");
+ (void)fclose(new);
+ exit(1);
+ }
+
+while (fgets(buffer, sizeof(buffer), base) != NULL)
+ {
+ int i;
+ char name[256];
+ char *value;
+ char *p = buffer;
+ char *q = name;
+
+ while (*p == ' ' || *p == '\t') p++;
+
+ if (strncmp(p, "#ifdef ", 7) == 0
+ || strncmp(p, "#ifndef ", 8) == 0
+ || strncmp(p, "#if ", 4) == 0
+ || strncmp(p, "#endif", 6) == 0
+ )
+ {
+ fputs(buffer, new);
+ continue;
+ }
+
+ if (strncmp(p, "#define ", 8) != 0) continue;
+
+ p += 8;
+ while (*p == ' ' || *p == '\t') p++;
+
+ if (*p < last_initial) fprintf(new, "\n");
+ last_initial = *p;
+
+ while (*p && (isalnum((unsigned char)*p) || *p == '_')) *q++ = *p++;
+ *q = 0;
+
+ /* USE_DB, USE_GDBM, and USE_TDB are special cases. We want to have only
+ one of them set. The scan of the Makefile has saved which was the last one
+ encountered. */
+
+ for (i = 1; i < sizeof(db_opts)/sizeof(char *); i++)
+ {
+ if (strcmp(name, db_opts[i]) == 0)
+ {
+ if (use_which_db == i)
+ fprintf(new, "#define %s %.*syes\n", db_opts[i],
+ 21 - (int)strlen(db_opts[i]), " ");
+ else
+ fprintf(new, "/* %s not set */\n", name);
+ break;
+ }
+ }
+ if (i < sizeof(db_opts)/sizeof(char *)) continue;
+
+ /* EXIM_USER is a special case. We look in the environment for EXIM_USER or
+ EXIM_UID (the latter for backward compatibility with Exim 3). If the value is
+ not numeric, we look up the user, and default the GID if found. Otherwise,
+ EXIM_GROUP or EXIM_GID must be in the environment. */
+
+ if (strcmp(name, "EXIM_UID") == 0)
+ {
+ 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;
+ char *user = getenv("EXIM_USER");
+ char *group = getenv("EXIM_GROUP");
+
+ if (user == NULL) user = getenv("EXIM_UID");
+ if (group == NULL) group = getenv("EXIM_GID");
+
+ if (user == NULL)
+ {
+ printf("\n*** EXIM_USER has not been defined in any of the Makefiles in "
+ "the\n \"Local\" directory. Please review your build-time "
+ "configuration.\n\n");
+ return 1;
+ }
+
+ while (isspace((unsigned char)(*user))) user++;
+ if (*user == 0)
+ {
+ printf("\n*** EXIM_USER is defined as an empty string in one of the "
+ "files\n in the \"Local\" directory. Please review your build-time"
+ "\n configuration.\n\n");
+ return 1;
+ }
+
+ for (s = user; *s != 0; s++)
+ {
+ if (iscntrl((unsigned char)(*s)))
+ {
+ printf("\n*** EXIM_USER contains the control character 0x%02X in one "
+ "of the files\n in the \"Local\" directory. Please review your "
+ "build-time\n configuration.\n\n", *s);
+ return 1;
+ }
+ }
+
+ /* Numeric uid given */
+
+ if (user[strspn(user, "0123456789")] == 0)
+ {
+ uid = (uid_t)atoi(user);
+ }
+
+ /* User name given. Normally, we look up the uid right away. However,
+ people building binary distributions sometimes want to retain the name till
+ runtime. This is supported if the name begins "ref:". */
+
+ else if (strncmp(user, "ref:", 4) == 0)
+ {
+ user += 4;
+ while (isspace(*user)) user++;
+ username = user;
+ gid_set = 1;
+ uid_not_set = 1;
+ }
+
+ else
+ {
+ struct passwd *pw = getpwnam(user);
+ if (pw == NULL)
+ {
+ printf("\n*** User \"%s\" (specified in one of the Makefiles) does not "
+ "exist.\n Please review your build-time configuration.\n\n",
+ user);
+ return 1;
+ }
+
+ uid = pw->pw_uid;
+ gid = pw->pw_gid;
+ gid_set = 1;
+ }
+
+ /* Use explicit group if set. */
+
+ if (group != NULL)
+ {
+ while (isspace((unsigned char)(*group))) group++;
+ if (*group == 0)
+ {
+ printf("\n*** EXIM_GROUP is defined as an empty string in one of "
+ "the files in the\n \"Local\" directory. ");
+ if (gid_set)
+ {
+ printf("If you want the Exim group to be taken from the\n "
+ "password data for the Exim user, just remove the EXIM_GROUP "
+ "setting.\n Otherwise, p");
+ }
+ else printf("EXIM_USER is defined numerically, so there is no"
+ "\n default for EXIM_GROUP and you must set it explicitly.\n P");
+ printf("lease review your build-time configuration.\n\n");
+ return 1;
+ }
+
+ for (s = group; *s != 0; s++)
+ {
+ if (iscntrl((unsigned char)(*s)))
+ {
+ printf("\n*** EXIM_GROUP contains the control character 0x%02X in one "
+ "of the files\n in the \"Local\" directory. Please review your "
+ "build-time\n configuration.\n\n", *s);
+ return 1;
+ }
+ }
+
+ /* Group name given. This may be by reference or to be looked up now,
+ as for user. */
+
+ if (strncmp(group, "ref:", 4) == 0)
+ {
+ group += 4;
+ while (isspace(*group)) group++;
+ groupname = group;
+ }
+
+ else if (username != NULL)
+ {
+ groupname = group;
+ }
+
+ else if (group[strspn(group, "0123456789")] == 0)
+ {
+ gid = (gid_t)atoi(group);
+ }
+
+ else
+ {
+ struct group *gr = getgrnam(group);
+ if (gr == NULL)
+ {
+ printf("\n*** Group \"%s\" (specified in one of the Makefiles) does "
+ "not exist.\n Please review your build-time configuration.\n\n",
+ group);
+ return 1;
+ }
+ gid = gr->gr_gid;
+ }
+ }
+
+ /* Else trouble unless found in passwd file with user */
+
+ else if (!gid_set)
+ {
+ printf("\n*** No group set for Exim. Please review your build-time "
+ "configuration.\n\n");
+ 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. */
+
+ if (username != NULL)
+ fprintf(new, "#define EXIM_USERNAME \"%s\"\n", username);
+ if (groupname != NULL)
+ fprintf(new, "#define EXIM_GROUPNAME \"%s\"\n", groupname);
+
+ fprintf(new, "#define EXIM_UID %d\n", (int)uid);
+ fprintf(new, "#define EXIM_GID %d\n", (int)gid);
+ continue;
+ }
+
+ /* CONFIGURE_OWNER and CONFIGURE_GROUP are special cases. We look in the
+ environment for first. If the value is not numeric, we look up the user or
+ group. A lot of this code is similar to that for EXIM_USER, but it's easier
+ to keep it separate. */
+
+ if (strcmp(name, "CONFIGURE_OWNER") == 0 ||
+ strcmp(name, "CONFIGURE_GROUP") == 0)
+ {
+ int isgroup = name[10] == 'G';
+ uid_t uid = 0;
+ gid_t gid = 0;
+ const char *s;
+ const char *username = NULL;
+ const char *user = getenv(name);
+
+ if (user == NULL) user = "";
+ while (isspace((unsigned char)(*user))) user++;
+ if (*user == 0)
+ {
+ fprintf(new, "/* %s not set */\n", name);
+ continue;
+ }
+
+ for (s = user; *s != 0; s++)
+ {
+ if (iscntrl((unsigned char)(*s)))
+ {
+ printf("\n*** %s contains the control character 0x%02X in "
+ "one of the files\n in the \"Local\" directory. Please review "
+ "your build-time\n configuration.\n\n", name, *s);
+ return 1;
+ }
+ }
+
+ /* Numeric uid given */
+
+ if (user[strspn(user, "0123456789")] == 0)
+ {
+ if (isgroup)
+ gid = (gid_t)atoi(user);
+ else
+ uid = (uid_t)atoi(user);
+ }
+
+ /* Name given. Normally, we look up the uid or gid right away. However,
+ people building binary distributions sometimes want to retain the name till
+ runtime. This is supported if the name begins "ref:". */
+
+ else if (strncmp(user, "ref:", 4) == 0)
+ {
+ user += 4;
+ while (isspace(*user)) user++;
+ username = user;
+ }
+else if (isgroup)
+ {
+ struct group *gr = getgrnam(user);
+ if (gr == NULL)
+ {
+ printf("\n*** Group \"%s\" (specified in one of the Makefiles) does not "
+ "exist.\n Please review your build-time configuration.\n\n",
+ user);
+ return 1;
+ }
+ gid = gr->gr_gid;
+ }
+
+ else
+ {
+ struct passwd *pw = getpwnam(user);
+ if (pw == NULL)
+ {
+ printf("\n*** User \"%s\" (specified in one of the Makefiles) does not "
+ "exist.\n Please review your build-time configuration.\n\n",
+ user);
+ return 1;
+ }
+ uid = pw->pw_uid;
+ }
+
+ /* Output user and group names or uid/gid. When names are set, uid/gid
+ are set to zero but will be replaced at runtime. */
+
+ if (username != NULL)
+ {
+ if (isgroup)
+ fprintf(new, "#define CONFIGURE_GROUPNAME \"%s\"\n", username);
+ else
+ fprintf(new, "#define CONFIGURE_OWNERNAME \"%s\"\n", username);
+ }
+
+ if (isgroup)
+ fprintf(new, "#define CONFIGURE_GROUP %d\n", (int)gid);
+ else
+ fprintf(new, "#define CONFIGURE_OWNER %d\n", (int)uid);
+ continue;
+ }
+
+ /* FIXED_NEVER_USERS is another special case. Look up the uid values and
+ create suitable initialization data for a vector. */
+
+ if (strcmp(name, "FIXED_NEVER_USERS") == 0)
+ {
+ char *list = getenv("FIXED_NEVER_USERS");
+ if (list == NULL)
+ {
+ fprintf(new, "#define FIXED_NEVER_USERS 0\n");
+ }
+ else
+ {
+ int count = 1;
+ int i, j;
+ uid_t *vector;
+ char *p = list;
+ while (*p != 0) if (*p++ == ':') count++;
+
+ vector = malloc((count+1) * sizeof(uid_t));
+ vector[0] = (uid_t)count;
+
+ for (i = 1, j = 0; i <= count; list++, i++)
+ {
+ char name[64];
+
+ p = list;
+ while (*list != 0 && *list != ':') list++;
+ strncpy(name, p, list-p);
+ name[list-p] = 0;
+
+ if (name[0] == 0)
+ {
+ continue;
+ }
+ else if (name[strspn(name, "0123456789")] == 0)
+ {
+ vector[j++] = (uid_t)atoi(name);
+ }
+ else
+ {
+ struct passwd *pw = getpwnam(name);
+ if (pw == NULL)
+ {
+ printf("\n*** User \"%s\" (specified for FIXED_NEVER_USERS in one of the Makefiles) does not "
+ "exist.\n Please review your build-time configuration.\n\n",
+ name);
+ return 1;
+ }
+ vector[j++] = pw->pw_uid;
+ }
+ }
+ fprintf(new, "#define FIXED_NEVER_USERS %d", j);
+ for (i = 0; i < j; i++) fprintf(new, ", %d", (unsigned int)vector[i]);
+ fprintf(new, "\n");
+ free(vector);
+ }
+ continue;
+ }
+
+ /* WITH_CONTENT_SCAN is another special case: it must be set if it or
+ EXPERIMENTAL_DCC is set. */
+
+ if (strcmp(name, "WITH_CONTENT_SCAN") == 0)
+ {
+ char *wcs = getenv("WITH_CONTENT_SCAN");
+ char *dcc = getenv("EXPERIMENTAL_DCC");
+ fprintf(new, wcs || dcc
+ ? "#define WITH_CONTENT_SCAN yes\n"
+ : "/* WITH_CONTENT_SCAN not set */\n");
+ continue;
+ }
+
+ /* DISABLE_DKIM is special; must be forced if no SUPPORT_TLS */
+ if (strcmp(name, "DISABLE_DKIM") == 0)
+ {
+ char *d_dkim = getenv("DISABLE_DKIM");
+ char *tls = getenv("SUPPORT_TLS");
+
+ if (d_dkim)
+ fprintf(new, "#define DISABLE_DKIM yes\n");
+ else if (!tls)
+ fprintf(new, "#define DISABLE_DKIM yes /* forced by lack of TLS */\n");
+ else
+ fprintf(new, "/* DISABLE_DKIM not set */\n");
+ continue;
+ }
+
+ /* Otherwise, check whether a value exists in the environment. Remember if
+ it is an AUTH setting or SUPPORT_CRYPTEQ. */
+
+ if ((value = getenv(name)) != NULL)
+ {
+ int len;
+ len = 21 - (int)strlen(name);
+
+ if (strncmp(name, "AUTH_", 5) == 0) have_auth = 1;
+ if (strncmp(name, "SUPPORT_CRYPTEQ", 15) == 0) support_crypteq = 1;
+
+ /* The text value of LDAP_LIB_TYPE refers to a macro that gets set. */
+
+ if (strcmp(name, "LDAP_LIB_TYPE") == 0)
+ {
+ if (strcmp(value, "NETSCAPE") == 0 ||
+ strcmp(value, "UMICHIGAN") == 0 ||
+ strcmp(value, "OPENLDAP1") == 0 ||
+ strcmp(value, "OPENLDAP2") == 0 ||
+ strcmp(value, "SOLARIS") == 0 ||
+ strcmp(value, "SOLARIS7") == 0) /* Compatibility */
+ {
+ fprintf(new, "#define LDAP_LIB_%s\n", value);
+ }
+ else
+ {
+ printf("\n*** LDAP_LIB_TYPE=%s is not a recognized LDAP library type."
+ "\n*** Please review your build-time configuration.\n\n", value);
+ return 1;
+ }
+ }
+
+ else if (strcmp(name, "RADIUS_LIB_TYPE") == 0)
+ {
+ if (strcmp(value, "RADIUSCLIENT") == 0 ||
+ strcmp(value, "RADIUSCLIENTNEW") == 0 ||
+ strcmp(value, "RADLIB") == 0)
+ {
+ fprintf(new, "#define RADIUS_LIB_%s\n", value);
+ }
+ else
+ {
+ printf("\n*** RADIUS_LIB_TYPE=%s is not a recognized RADIUS library type."
+ "\n*** Please review your build-time configuration.\n\n", value);
+ return 1;
+ }
+ }
+
+ /* Other macros get set to the environment value. */
+
+ else
+ {
+ fprintf(new, "#define %s ", name);
+ while(len-- > 0) fputc(' ', new);
+
+ /* LOG_FILE_PATH is now messy because it can be a path containing %s or
+ it can be "syslog" or ":syslog" or "syslog:path" or even "path:syslog". */
+
+ if (strcmp(name, "LOG_FILE_PATH") == 0)
+ {
+ char *ss = value;
+ for(;;)
+ {
+ char *pp;
+ char *sss = strchr(ss, ':');
+ if (sss != NULL)
+ {
+ strncpy(buffer, ss, sss-ss);
+ buffer[sss-ss] = 0; /* For empty case */
+ }
+ else
+ {
+ strncpy(buffer, ss, sizeof(buffer));
+ buffer[sizeof(buffer)-1] = 0;
+ }
+ pp = buffer + (int)strlen(buffer);
+ while (pp > buffer && isspace((unsigned char)pp[-1])) pp--;
+ *pp = 0;
+ if (buffer[0] != 0 && strcmp(buffer, "syslog") != 0)
+ check_percent_ess(buffer, name);
+ if (sss == NULL) break;
+ ss = sss + 1;
+ while (isspace((unsigned char)*ss)) ss++;
+ }
+ fprintf(new, "\"%s\"\n", value);
+ }
+
+ /* Timezone values HEADERS_CHARSET, TCP_WRAPPERS_DAEMON_NAME and
+ WHITELIST_D_MACROS get quoted */
+
+ else if (strcmp(name, "TIMEZONE_DEFAULT") == 0||
+ strcmp(name, "TCP_WRAPPERS_DAEMON_NAME") == 0||
+ strcmp(name, "HEADERS_CHARSET") == 0||
+ strcmp(name, "WHITELIST_D_MACROS") == 0)
+ fprintf(new, "\"%s\"\n", value);
+
+ /* GnuTLS constants; first is for debugging, others are tuning */
+
+ /* less than 0 is not-active; 0-9 are normal, API suggests higher
+ taken without problems */
+ else if (strcmp(name, "EXIM_GNUTLS_LIBRARY_LOG_LEVEL") == 0)
+ {
+ long nv;
+ char *end;
+ nv = strtol(value, &end, 10);
+ if (end != value && *end == '\0' && nv >= -1 && nv <= 100)
+ {
+ fprintf(new, "%s\n", value);
+ }
+ else
+ {
+ printf("Value of %s should be -1..9\n", name);
+ return 1;
+ }
+ }
+
+ /* how many bits Exim, as a client, demands must be in D-H */
+ /* 1024 is a historical figure; some sites actually use lower, so we
+ permit the value to be lowered "dangerously" low, but not "insanely"
+ low. Though actually, 1024 is becoming "dangerous". */
+ else if ((strcmp(name, "EXIM_CLIENT_DH_MIN_MIN_BITS") == 0) ||
+ (strcmp(name, "EXIM_CLIENT_DH_DEFAULT_MIN_BITS") == 0) ||
+ (strcmp(name, "EXIM_SERVER_DH_BITS_PRE2_12") == 0))
+ {
+ long nv;
+ char *end;
+ nv = strtol(value, &end, 10);
+ if (end != value && *end == '\0' && nv >= 512 && nv < 500000)
+ {
+ fprintf(new, "%s\n", value);
+ }
+ else
+ {
+ printf("Unreasonable value (%s) of \"%s\".\n", value, name);
+ return 1;
+ }
+ }
+
+ /* For others, quote any paths and don't quote anything else */
+
+ else
+ {
+ if (value[0] == '/') fprintf(new, "\"%s\"\n", value);
+ else fprintf(new, "%s\n", value);
+ }
+ }
+ }
+
+ /* Value not defined in the environment; use the default */
+
+ else
+ {
+ char *t = p;
+ while (*p == ' ' || *p == '\t') p++;
+ if (*p != '\n') fputs(buffer, new); else
+ {
+ *t = 0;
+ if (strcmp(name, "BIN_DIRECTORY") == 0 ||
+ strcmp(name, "CONFIGURE_FILE") == 0)
+ {
+ printf("\n*** %s has not been defined in any of the Makefiles in the\n"
+ " \"Local\" directory. "
+ "Please review your build-time configuration.\n\n", name);
+ return 1;
+ }
+
+ if (strcmp(name, "TIMEZONE_DEFAULT") == 0)
+ {
+ char *tz = getenv("TZ");
+ fprintf(new, "#define TIMEZONE_DEFAULT ");
+ if (tz == NULL) fprintf(new, "NULL\n"); else
+ fprintf(new, "\"%s\"\n", tz);
+ }
+
+ else fprintf(new, "/* %s not set */\n", name);
+ }
+ }
+ }
+
+(void)fclose(base);
+
+/* If any AUTH macros were defined, ensure that SUPPORT_CRYPTEQ is also
+defined. */
+
+if (have_auth)
+ {
+ if (!support_crypteq) fprintf(new, "/* Force SUPPORT_CRYPTEQ for AUTH */\n"
+ "#define SUPPORT_CRYPTEQ\n");
+ }
+
+/* Check poll() for timer functionality.
+Some OS' have released with it broken. */
+
+ {
+ struct timeval before, after;
+ int rc;
+ size_t us;
+
+ gettimeofday(&before, NULL);
+ rc = poll(NULL, 0, 500);
+ gettimeofday(&after, NULL);
+
+ us = (after.tv_sec - before.tv_sec) * 1000000 +
+ (after.tv_usec - before.tv_usec);
+
+ if (us < 400000)
+ fprintf(new, "#define NO_POLL_H\n");
+ }
+
+/* End off */
+
+fprintf(new, "\n/* End of config.h */\n");
+(void)fclose(new);
+return 0;
+}
+
+/* End of buildconfig.c */
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-23 09:46:30 +0000