Fix onetime qrunner alloc

[exim.git] / src / src / buildconfig.c

diff --git a/src/src/buildconfig.c b/src/src/buildconfig.c
index 6adb5d033fa014051258a97f5810b113205075f3..8f37e508ab4da293a055cd9a806e3fffb9646380 100644 (file)
--- a/src/src/buildconfig.c
+++ b/src/src/buildconfig.c
@@ -1,11 +1,11 @@
-/* $Cambridge: exim/src/src/buildconfig.c,v 1.3 2004/11/05 12:33:59 ph10 Exp $ */
-

 /*************************************************
 *     Exim - an Internet mail transport agent    *
 *************************************************/
 
 /*************************************************
 *     Exim - an Internet mail transport agent    *
 *************************************************/
 

-/* Copyright (c) University of Cambridge 1995 - 2004 */
+/* Copyright (c) The Exim Maintainers 2022 */
+/* Copyright (c) University of Cambridge 1995 - 2018 */

 /* See the file NOTICE for conditions of use and distribution. */
 /* See the file NOTICE for conditions of use and distribution. */

+/* SPDX-License-Identifier: GPL-2.0-or-later */

 
 
 /*************************************************
 
 
 /*************************************************


@@ -15,8 +15,13 @@
 /* This auxiliary program builds the file config.h by the following
 process:
 
 /* 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
 
 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


@@ -33,20 +38,22 @@ normally called independently. */
 #include <stdlib.h>
 #include <string.h>
 #include <sys/types.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 {
 #include <pwd.h>
 #include <grp.h>
 
 typedef struct {

-  char *name;
+  const char *name;

   int *flag;
 } have_item;
 
 typedef struct {
   int *flag;
 } have_item;
 
 typedef struct {

-  char *name;
+  const char *name;

   char *data;
 } save_item;
 
   char *data;
 } save_item;
 

-static char *db_opts[] = { "", "USE_DB", "USE_GDBM", "USE_TDB" };
+static const char *db_opts[] = { "", "USE_DB", "USE_GDBM", "USE_TDB", "USE_NDBM" };

 
 static int have_ipv6 = 0;
 static int have_iconv = 0;
 
 static int have_ipv6 = 0;
 static int have_iconv = 0;


@@ -96,6 +103,18 @@ if (!OK)
 int
 main(int argc, char **argv)
 {
 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;
+long long test_longlong_t = 0;
+int test_int_t = 0;

 FILE *base;
 FILE *new;
 int last_initial = 'A';
 FILE *base;
 FILE *new;
 int last_initial = 'A';


@@ -132,13 +151,82 @@ 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");
 
 fprintf(new, "Do not edit it. Instead, edit Local/Makefile and "
   "rerun make. */\n\n");
 

-/* First, search the makefile for certain settings */
-
-base = fopen("Makefile", "rb");
-if (base == NULL)
+/* 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");
+else
+  fprintf(new, "# define OFF_T_FMT  \"%%ld\"\n");
+fprintf(new, "#endif\n\n");
+
+fprintf(new, "#ifndef LONGLONG_T\n");
+if (sizeof(test_longlong_t) > sizeof(test_long_t))
+  fprintf(new, "# define LONGLONG_T long long int\n");
+else
+  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 */
+
+if (!(base = fopen("Makefile", "rb")))

   {
   printf("*** Buildconfig: failed to open Makefile\n");
   {
   printf("*** Buildconfig: failed to open Makefile\n");

-  fclose(new);
+  (void)fclose(new);

   exit(1);
   }
 
   exit(1);
   }
 


@@ -242,15 +330,16 @@ fprintf(new, "#define HAVE_ICONV            %s\n",
 if (errno_quota[0] != 0)
   fprintf(new, "\n#define ERRNO_QUOTA           %s\n", errno_quota);
 
 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/* 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");
   fprintf(new, "\n#define USE_INET_NTOA_FIX");
   }
 
 fprintf(new, "\n");

-fclose(base);
+(void)fclose(base);

 
 
 /* Now handle the macros listed in the defaults */
 
 
 /* Now handle the macros listed in the defaults */


@@ -259,7 +348,7 @@ base = fopen("../src/config.h.defaults", "rb");
 if (base == NULL)
   {
   printf("*** Buildconfig: failed to open ../src/config.h.defaults\n");
 if (base == NULL)
   {
   printf("*** Buildconfig: failed to open ../src/config.h.defaults\n");

-  fclose(new);
+  (void)fclose(new);

   exit(1);
   }
 
   exit(1);
   }
 


@@ -273,6 +362,16 @@ while (fgets(buffer, sizeof(buffer), base) != NULL)
 
   while (*p == ' ' || *p == '\t') p++;
 
 
   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;
   if (strncmp(p, "#define ", 8) != 0) continue;
 
   p += 8;


@@ -289,7 +388,6 @@ while (fgets(buffer, sizeof(buffer), base) != NULL)
   encountered. */
 
   for (i = 1; i < sizeof(db_opts)/sizeof(char *); i++)
   encountered. */
 
   for (i = 1; i < sizeof(db_opts)/sizeof(char *); i++)

-    {

     if (strcmp(name, db_opts[i]) == 0)
       {
       if (use_which_db == i)
     if (strcmp(name, db_opts[i]) == 0)
       {
       if (use_which_db == i)


@@ -299,7 +397,6 @@ while (fgets(buffer, sizeof(buffer), base) != NULL)
         fprintf(new, "/* %s not set */\n", name);
       break;
       }
         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
   if (i < sizeof(db_opts)/sizeof(char *)) continue;
 
   /* EXIM_USER is a special case. We look in the environment for EXIM_USER or


@@ -312,6 +409,7 @@ while (fgets(buffer, sizeof(buffer), base) != NULL)
     uid_t uid = 0;
     gid_t gid = 0;
     int gid_set = 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 *username = NULL;
     char *groupname = NULL;
     char *s;


@@ -366,6 +464,7 @@ while (fgets(buffer, sizeof(buffer), base) != NULL)
       while (isspace(*user)) user++;
       username = user;
       gid_set = 1;
       while (isspace(*user)) user++;
       username = user;
       gid_set = 1;

+      uid_not_set = 1;

       }
 
     else
       }
 
     else


@@ -459,6 +558,19 @@ while (fgets(buffer, sizeof(buffer), base) != NULL)
       return 1;
       }
 
       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. */
 
     /* Output user and group names or uid/gid. When names are set, uid/gid
     are set to zero but will be replaced at runtime. */
 


@@ -480,12 +592,12 @@ while (fgets(buffer, sizeof(buffer), base) != NULL)
   if (strcmp(name, "CONFIGURE_OWNER") == 0 ||
       strcmp(name, "CONFIGURE_GROUP") == 0)
     {
   if (strcmp(name, "CONFIGURE_OWNER") == 0 ||
       strcmp(name, "CONFIGURE_GROUP") == 0)
     {

-    int isgroup = name[10] == 'G'; 
+    int isgroup = name[10] == 'G';

     uid_t uid = 0;
     uid_t uid = 0;

-    gid_t gid = 0; 
-    char *s;
-    char *username = NULL;
-    char *user = getenv(name);
+    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 == NULL) user = "";
     while (isspace((unsigned char)(*user))) user++;


@@ -512,7 +624,7 @@ while (fgets(buffer, sizeof(buffer), base) != NULL)
       {
       if (isgroup)
         gid = (gid_t)atoi(user);
       {
       if (isgroup)
         gid = (gid_t)atoi(user);

-      else    
+      else

         uid = (uid_t)atoi(user);
       }
 
         uid = (uid_t)atoi(user);
       }
 


@@ -526,8 +638,7 @@ while (fgets(buffer, sizeof(buffer), base) != NULL)
       while (isspace(*user)) user++;
       username = user;
       }
       while (isspace(*user)) user++;
       username = user;
       }

-
-    else if (isgroup)
+else if (isgroup)

       {
       struct group *gr = getgrnam(user);
       if (gr == NULL)
       {
       struct group *gr = getgrnam(user);
       if (gr == NULL)


@@ -560,13 +671,13 @@ while (fgets(buffer, sizeof(buffer), base) != NULL)
       {
       if (isgroup)
         fprintf(new, "#define CONFIGURE_GROUPNAME         \"%s\"\n", username);
       {
       if (isgroup)
         fprintf(new, "#define CONFIGURE_GROUPNAME         \"%s\"\n", username);

-      else 
+      else

         fprintf(new, "#define CONFIGURE_OWNERNAME         \"%s\"\n", username);
       }
         fprintf(new, "#define CONFIGURE_OWNERNAME         \"%s\"\n", username);
       }

-    
+

     if (isgroup)
       fprintf(new, "#define CONFIGURE_GROUP              %d\n", (int)gid);
     if (isgroup)
       fprintf(new, "#define CONFIGURE_GROUP              %d\n", (int)gid);

-    else   
+    else

       fprintf(new, "#define CONFIGURE_OWNER              %d\n", (int)uid);
     continue;
     }
       fprintf(new, "#define CONFIGURE_OWNER              %d\n", (int)uid);
     continue;
     }


@@ -595,16 +706,16 @@ while (fgets(buffer, sizeof(buffer), base) != NULL)
       for (i = 1, j = 0; i <= count; list++, i++)
         {
         char name[64];
       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;
         p = list;
         while (*list != 0 && *list != ':') list++;
         strncpy(name, p, list-p);
         name[list-p] = 0;

-        
+

         if (name[0] == 0)
           {
         if (name[0] == 0)
           {

-          continue; 
-          }  
+          continue;
+          }

         else if (name[strspn(name, "0123456789")] == 0)
           {
           vector[j++] = (uid_t)atoi(name);
         else if (name[strspn(name, "0123456789")] == 0)
           {
           vector[j++] = (uid_t)atoi(name);


@@ -625,10 +736,26 @@ while (fgets(buffer, sizeof(buffer), base) != NULL)
       fprintf(new, "#define FIXED_NEVER_USERS     %d", j);
       for (i = 0; i < j; i++) fprintf(new, ", %d", (unsigned int)vector[i]);
       fprintf(new, "\n");
       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;
     }
 
       }
     continue;
     }
 

+  /* DISABLE_DKIM is special; must be forced if DISABLE_TLS */
+  if (strcmp(name, "DISABLE_DKIM") == 0)
+    {
+    char *d_dkim = getenv("DISABLE_DKIM");
+    char *notls = getenv("DISABLE_TLS");
+
+    if (d_dkim)
+      fprintf(new, "#define DISABLE_DKIM          yes\n");
+    else if (notls)
+      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. */
 
   /* Otherwise, check whether a value exists in the environment. Remember if
   it is an AUTH setting or SUPPORT_CRYPTEQ. */
 


@@ -664,6 +791,7 @@ while (fgets(buffer, sizeof(buffer), base) != NULL)
     else if (strcmp(name, "RADIUS_LIB_TYPE") == 0)
       {
       if (strcmp(value, "RADIUSCLIENT") == 0 ||
     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);
           strcmp(value, "RADLIB") == 0)
         {
         fprintf(new, "#define RADIUS_LIB_%s\n", value);


@@ -698,7 +826,11 @@ while (fgets(buffer, sizeof(buffer), base) != NULL)
             strncpy(buffer, ss, sss-ss);
             buffer[sss-ss] = 0;  /* For empty case */
             }
             strncpy(buffer, ss, sss-ss);
             buffer[sss-ss] = 0;  /* For empty case */
             }

-          else strcpy(buffer, ss);
+          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;
           pp = buffer + (int)strlen(buffer);
           while (pp > buffer && isspace((unsigned char)pp[-1])) pp--;
           *pp = 0;


@@ -711,12 +843,57 @@ while (fgets(buffer, sizeof(buffer), base) != NULL)
         fprintf(new, "\"%s\"\n", value);
         }
 
         fprintf(new, "\"%s\"\n", value);
         }
 

-      /* Timezone values and HEADERS_CHARSET get quoted */
+      /* Timezone values HEADERS_CHARSET, TCP_WRAPPERS_DAEMON_NAME and
+      WHITELIST_D_MACROS get quoted */

 
       else if (strcmp(name, "TIMEZONE_DEFAULT") == 0||
 
       else if (strcmp(name, "TIMEZONE_DEFAULT") == 0||

-               strcmp(name, "HEADERS_CHARSET") == 0)
+               strcmp(name, "TCP_WRAPPERS_DAEMON_NAME") == 0||
+               strcmp(name, "HEADERS_CHARSET") == 0||
+               strcmp(name, "WHITELIST_D_MACROS") == 0)

         fprintf(new, "\"%s\"\n", value);
 
         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
       /* For others, quote any paths and don't quote anything else */
 
       else


@@ -758,21 +935,37 @@ while (fgets(buffer, sizeof(buffer), base) != NULL)
     }
   }
 
     }
   }
 

-fclose(base);
+(void)fclose(base);

 
 /* If any AUTH macros were defined, ensure that SUPPORT_CRYPTEQ is also
 defined. */
 
 if (have_auth)
 
 /* 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");
   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;
+  size_t us;
+
+  gettimeofday(&before, NULL);
+  (void) 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");
   }
 
 /* End off */
 
 fprintf(new, "\n/* End of config.h */\n");

-fclose(new);
+(void)fclose(new);

 return 0;
 }
 
 return 0;
 }