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Diffstat (limited to 'src/buildconfig.c')
| -rw-r--r-- | src/buildconfig.c | 984 |
1 files changed, 984 insertions, 0 deletions
diff --git a/src/buildconfig.c b/src/buildconfig.c new file mode 100644 index 0000000..f9a8feb --- /dev/null +++ b/src/buildconfig.c @@ -0,0 +1,984 @@ +/************************************************* +* Exim - an Internet mail transport agent * +*************************************************/ + +/* Copyright (c) The Exim Maintainers 2022 */ +/* 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", "USE_NDBM" }; + +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; +long long test_longlong_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"); +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"); + (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 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. */ + + 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; + 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"); +(void)fclose(new); +return 0; +} + +/* End of buildconfig.c */ |