found indication; now we go on to read the "scan ok" response line,
and send a quit.
+JH/18 Convert macro handling to be tree-based, from the previous linear list.
+ With the number of builtin macros we now have this is worthwhile,
+ dropping the config-file read time (during which new macros are checked
+ and registered, and macros are expanded) from about 500 usec to about 180.
+
Exim version 4.90
-----------------
# are set up, and finally it goes to the main Exim target.
all: utils exim
-config: $(EDITME) checklocalmake Makefile os.c config.h version.h version.sh macro.c
+config: $(EDITME) checklocalmake Makefile os.c config.h version.h version.sh macro_defs.c
checklocalmake:
@if $(SHELL) $(SCRIPTS)/newer $(EDITME)-$(OSTYPE) $(EDITME) || \
macro-manualroute.o macro-queryprogram.o macro-redirect.o \
macro-auth-spa.o macro-cram_md5.o macro-cyrus_sasl.o macro-dovecot.o macro-gsasl_exim.o \
macro-heimdal_gssapi.o macro-plaintext.o macro-spa.o macro-tls.o\
- macro-dkim.o macro-malware.o
+ macro-dkim.o macro-malware.o macro-macro.o macro-tree.o
$(OBJ_MACRO): $(MACRO_HSRC)
macro-malware.o: malware.c
@echo "$(CC) -DMACRO_PREDEF malware.c"
$(FE)$(CC) -c $(CFLAGS) -DMACRO_PREDEF $(INCLUDE) -o $@ malware.c
+macro-macro.o: macro.c
+ @echo "$(CC) -DMACRO_PREDEF macro.c"
+ $(FE)$(CC) -c $(CFLAGS) -DMACRO_PREDEF $(INCLUDE) -o $@ macro.c
+macro-tree.o: tree.c
+ @echo "$(CC) -DMACRO_PREDEF tree.c"
+ $(FE)$(CC) -c $(CFLAGS) -DMACRO_PREDEF $(INCLUDE) -o $@ tree.c
macro_predef: $(OBJ_MACRO)
@echo "$(LNCC) -o $@"
$(FE)$(LNCC) -o $@ $(LFLAGS) $(OBJ_MACRO)
-macro.c: macro_predef
- ./macro_predef > macro.c
+macro_defs.c: macro_predef
+ ./macro_predef > macro_defs.c
# This target is recognized specially by GNU make. It records those targets
# that do not correspond to files that are being built and which should
OBJ_LOOKUPS = lookups/lf_quote.o lookups/lf_check_file.o lookups/lf_sqlperform.o
OBJ_EXIM = acl.o base64.o child.o crypt16.o daemon.o dbfn.o debug.o deliver.o \
- directory.o dns.o drtables.o enq.o exim.o expand.o filter.o \
- filtertest.o globals.o dkim.o dkim_transport.o hash.o \
- header.o host.o ip.o log.o lss.o match.o moan.o \
+ dkim.o dkim_transport.o directory.o dns.o drtables.o enq.o exim.o \
+ expand.o environment.o filter.o filtertest.o globals.o hash.o \
+ header.o host.o ip.o log.o lss.o macro.o macro_defs.o match.o moan.o \
os.o parse.o queue.o \
rda.o readconf.o receive.o retry.o rewrite.o rfc2047.o \
route.o search.o sieve.o smtp_in.o smtp_out.o spool_in.o spool_out.o \
std-crypto.o store.o string.o tls.o tod.o transport.o tree.o verify.o \
- environment.o macro.o \
$(OBJ_LOOKUPS) \
local_scan.o $(EXIM_PERL) $(OBJ_WITH_CONTENT_SCAN) \
$(OBJ_EXPERIMENTAL)
debug.o: $(HDRS) debug.c
deliver.o: $(HDRS) transports/smtp.h deliver.c
directory.o: $(HDRS) directory.c
+dkim.o: $(HDRS) pdkim/pdkim.h dkim.c
+dkim_transport.o: $(HDRS) dkim_transport.c
dns.o: $(HDRS) dns.c
enq.o: $(HDRS) enq.c
exim.o: $(HDRS) exim.c
ip.o: $(HDRS) ip.c
log.o: $(HDRS) log.c
lss.o: $(HDRS) lss.c
+macro.o: $(HDRS) macro.c
+macro_defs.o: $(HDRS) macro_defs.c
match.o: $(HDRS) match.c
moan.o: $(HDRS) moan.c
os.o: $(HDRS) $(OS_C_INCLUDES) os.c
transport.o: $(HDRS) transport.c
tree.o: $(HDRS) tree.c
verify.o: $(HDRS) transports/smtp.h verify.c
-dkim.o: $(HDRS) pdkim/pdkim.h dkim.c
-dkim_transport.o: $(HDRS) dkim_transport.c
# Dependencies for WITH_CONTENT_SCAN modules
tod.c transport.c tree.c verify.c version.c \
dkim.c dkim.h dkim_transport.c dmarc.c dmarc.h \
valgrind.h memcheck.h \
- macro_predef.c macro_predef.h
+ macro.c macro_predef.c macro_predef.h
do
ln -s ../src/$f $f
done
* Validate that the macros given are okay *
*************************************************/
+#ifdef WHITELIST_D_MACROS
+static void
+wlist_check(uschar * name, uschar * val, void * ctx)
+{
+uschar ** w, ** whites = ctx;
+unsigned len;
+int n;
+
+for (w = whites; *w; ++w)
+ if (Ustrcmp(*w, name) == 0) break;
+if (*w)
+ {
+ if (!val || !*val) return;
+ len = Ustrlen(val);
+ if ((n = pcre_exec(regex_whitelisted_macro, NULL, CS val, len,
+ 0, PCRE_EOPT, NULL, 0)) >= 0)
+ return;
+ if (n != PCRE_ERROR_NOMATCH)
+ debug_printf("macros_trusted checking %s returned %d\n", name, n);
+ }
+*whites = NULL;
+return;
+}
+#endif
+
+
/* Typically, Exim will drop privileges if macros are supplied. In some
cases, we want to not do so.
{
#ifdef WHITELIST_D_MACROS
macro_item *m;
-uschar *whitelisted, *end, *p, **whites, **w;
+uschar *whitelisted, *end, *p, **whites;
int white_count, i, n;
size_t len;
BOOL prev_char_item, found;
}
whites[i] = NULL;
-/* The list of commandline macros should be very short.
-Accept the N*M complexity. */
-for (m = macros; m; m = m->next) if (m->command_line)
- {
- found = FALSE;
- for (w = whites; *w; ++w)
- if (Ustrcmp(*w, m->name) == 0)
- {
- found = TRUE;
- break;
- }
- if (!found)
- return FALSE;
- if (!m->replacement)
- continue;
- if ((len = m->replen) == 0)
- continue;
- n = pcre_exec(regex_whitelisted_macro, NULL, CS m->replacement, len,
- 0, PCRE_EOPT, NULL, 0);
- if (n < 0)
- {
- if (n != PCRE_ERROR_NOMATCH)
- debug_printf("macros_trusted checking %s returned %d\n", m->name, n);
- return FALSE;
- }
- }
+tree_walk(tree_macros, wlist_check, whites);
+if (!*whites) return FALSE;
+
DEBUG(D_any) debug_printf("macros_trusted overridden to true by whitelisting\n");
return TRUE;
#endif
if (isupper(big_buffer[0]))
{
if (macro_read_assignment(big_buffer))
- printf("Defined macro '%s'\n", mlast->name);
+ {
+ uschar * s = Ustrchr(big_buffer, '=');
+ printf("Defined macro '%.*s'\n", s - big_buffer, big_buffer);
+ }
}
else
if ((line = expand_string(big_buffer))) printf("%s\n", CS line);
while (isspace(*s)) s++;
}
- for (m = macros; m; m = m->next)
- if (Ustrcmp(m->name, name) == 0)
- {
- fprintf(stderr, "exim: duplicated -D in command line\n");
- exit(EXIT_FAILURE);
- }
+ if (macro_search(name))
+ {
+ fprintf(stderr, "exim: duplicated -D in command line\n");
+ exit(EXIT_FAILURE);
+ }
- m = macro_create(string_copy(name), string_copy(s), TRUE);
+ m = macro_create(name, s, TRUE);
if (clmacro_count >= MAX_CLMACROS)
{
fprintf(stderr, "exim: too many -D options on command line\n");
exit(EXIT_FAILURE);
}
- clmacros[clmacro_count++] = string_sprintf("-D%s=%s", m->name,
- m->replacement);
+ clmacros[clmacro_count++] = string_sprintf("-D%s=%s",
+ m->tnode.name, m->tnode.data.ptr);
}
#endif
break;
/* Only admin users may see config-file macros this way */
- if (!admin_user) macros = mlast = NULL;
+ if (!admin_user) tree_macros = NULL;
/* Allow $recipients for this testing */
extern void log_close_all(void);
extern macro_item * macro_create(const uschar *, const uschar *, BOOL);
+extern macro_item * macro_search(const uschar *);
+extern macro_item * macro_search_largest_prefix(const uschar *);
+extern macro_item * macro_search_prefix(const uschar *);
+extern void macro_print(uschar *, uschar *, void *);
extern BOOL macro_read_assignment(uschar *);
extern uschar *macros_expand(int, int *, BOOL *);
extern void mainlog_close(void);
extern int lookup_open_max; /* Max lookup files to cache */
extern uschar *lookup_value; /* Value looked up from file */
-extern macro_item *macros; /* Configuration macros */
-extern macro_item *mlast; /* Last item in macro list */
+extern unsigned m_number; /* count of macros */
extern uschar *mailstore_basename; /* For mailstore deliveries */
#ifdef WITH_CONTENT_SCAN
extern uschar *malware_name; /* Name of virus or malware ("W32/Klez-H") */
extern tree_node *tree_dns_fails; /* Tree of DNS lookup failures */
extern tree_node *tree_duplicates; /* Tree of duplicate addresses */
extern tree_node *tree_nonrecipients; /* Tree of nonrecipient addresses */
+extern tree_node *tree_macros; /* Configuration macros */
extern tree_node *tree_unusable; /* Tree of unusable addresses */
extern BOOL trusted_caller; /* Caller is trusted */
--- /dev/null
+/*************************************************
+* Exim - an Internet mail transport agent *
+*************************************************/
+
+/* Copyright (c) University of Cambridge 1995 - 2017 */
+/* See the file NOTICE for conditions of use and distribution. */
+
+/* Functions for handling macros */
+
+#include "exim.h"
+
+#ifdef MACRO_PREDEF
+# undef store_get
+# define store_get(nbytes) malloc((size_t)(nbytes))
+#define string_copyn(s, len) strndup(CS(s), (len))
+#endif
+
+/*************************************************
+* Deal with an assignment to a macro *
+*************************************************/
+
+/* We have a new definition; add to the collection.
+Items are numbered so we can avoid recursion in expansions.
+
+Args:
+ name Name of the macro. Will be copied.
+ val Expansion result for the macro. Will be copied.
+*/
+
+macro_item *
+macro_create(const uschar * name, const uschar * val, BOOL command_line)
+{
+int namelen = Ustrlen(name);
+macro_item * m = store_get(sizeof(macro_item) + namelen);
+
+/* fprintf(stderr, "%s: '%s' '%s'\n", __FUNCTION__, name, val); */
+
+m->command_line = command_line;
+m->namelen = namelen;
+m->replen = Ustrlen(val);
+m->m_number = m_number++;
+memset(&m->tnode, 0, sizeof(tree_node));
+Ustrcpy(m->tnode.name, name);
+m->tnode.data.ptr = string_copyn(val, m->replen);
+(void) tree_insertnode(&tree_macros, &m->tnode);
+
+return m;
+}
+
+
+/* Search for a macro, with an exact match on the name.
+Return the node, or NULL for not-found.
+
+Arguments: name key to search for
+*/
+
+macro_item *
+macro_search(const uschar * name)
+{
+tree_node * t;
+
+t = tree_search(tree_macros, name);
+return tnode_to_mitem(t);
+}
+
+
+/* Search for a macro with a (possibly improper) leading substring
+matching the given name. Return the node, or NULL for not-found.
+
+Arguments: name key to search on
+*/
+
+macro_item *
+macro_search_prefix(const uschar * s)
+{
+tree_node * t;
+int c;
+
+for (t = tree_macros; t; t = c < 0 ? t->left : t->right)
+ if ((c = Ustrncmp(s, t->name, tnode_to_mitem(t)->namelen)) == 0)
+ return tnode_to_mitem(t);
+return NULL;
+}
+
+
+/* Search for the macro with the largest possible leading substring
+matching the given name. */
+
+macro_item *
+macro_search_largest_prefix(const uschar * s)
+{
+macro_item * found;
+tree_node * child;
+int c;
+
+if ((found = macro_search_prefix(s)))
+ {
+ /* There could be a node with a larger substring also matching the
+ name. If so it must be in the right subtree; either the right child
+ or (if that sorts after the name) in the left subtree of the right child. */
+
+ child = found->tnode.right;
+ while (child)
+ if ((c = Ustrncmp(s, child->name, tnode_to_mitem(child)->namelen)) == 0)
+ {
+ found = tnode_to_mitem(child);
+ child = found->tnode.right;
+ }
+ else if (c < 0 && (child = child->left))
+ continue;
+ else
+ break;
+ }
+return found;
+}
+
+
+
+void
+macro_print(uschar * name, uschar * val, void * ctx)
+{
+BOOL names_only = (BOOL)(long)ctx;
+if (names_only)
+ printf("%s\n", CS name);
+else
+ printf("%s=%s\n", CS name, CS val);
+}
+
+
+
+/* vi: aw ai sw=2
+*/
+/* End of macro.c */
#include "exim.h"
#include "macro_predef.h"
-unsigned mp_index = 0;
+tree_node * tree_macros = NULL;
+unsigned m_number = 1;
/* Global dummy variables */
void
builtin_macro_create_var(const uschar * name, const uschar * val)
{
-printf ("static macro_item p%d = { ", mp_index);
-if (mp_index == 0)
- printf(".next=NULL,");
-else
- printf(".next=&p%d,", mp_index-1);
-
-printf(" .command_line=FALSE, .namelen=%d, .replen=%d,"
- " .name=US\"%s\", .replacement=US\"%s\" };\n",
- Ustrlen(name), Ustrlen(val), CS name, CS val);
-mp_index++;
+macro_create(name, val, FALSE);
}
}
+static unsigned
+macro_dump(macro_item * m)
+{
+int left = 0, right = 0;
+tree_node * t;
+macro_item_64 * m64;
+
+/* fprintf(stderr, "%s %p\n", __FUNCTION__, m); */
+
+if (!m) return 0;
+/* fprintf(stderr, "%s '%s' l %p r %p\n", __FUNCTION__, m->tnode.name, m->tnode.left, m->tnode.left); */
+if ((t = m->tnode.left)) left = macro_dump(tnode_to_mitem(m->tnode.left));
+if ((t = m->tnode.right)) right = macro_dump(tnode_to_mitem(m->tnode.right));
+
+printf ("static macro_item_64 p%u = { ", m->m_number);
+printf(" .command_line=FALSE,"
+ " .namelen=%d,"
+ " .replen=%d,"
+ " .m_number=%u,"
+ " .tnode={",
+ Ustrlen(m->tnode.name), Ustrlen(m->tnode.data.ptr), m->m_number);
+printf(left ? " .left=&p%d.tnode," : " .left=NULL,", left);
+printf(right ? " .right=&p%d.tnode," : " .right=NULL,", right);
+printf(
+ " .data.ptr=\"%s\","
+ " .balance=%d,"
+ " .name=\"%s\"}};\n",
+ CS m->tnode.data.ptr,
+ m->tnode.balance,
+ CS m->tnode.name);
+
+if (Ustrlen(m->tnode.name) +1 > sizeof(m64->tnode.name))
+ {
+ printf("#error macro name too long for macro_item_64\n");
+ exit(1);
+ }
+return m->m_number;
+}
+
+
+
int
main(void)
{
+unsigned idx;
+
printf("#include \"exim.h\"\n");
features();
options();
params();
-printf("macro_item * macros = &p%d;\n", mp_index-1);
-printf("macro_item * mlast = &p0;\n");
+idx = macro_dump(tnode_to_mitem(tree_macros));
+printf("tree_node * tree_macros = (tree_node *) &p%u.tnode;\n", idx);
+printf("unsigned m_number = %u;\n", m_number);
exit(0);
}
-/*************************************************
-* Deal with an assignment to a macro *
-*************************************************/
-
-/* We have a new definition; append to the list.
-
-Args:
- name Name of the macro. Must be in storage persistent past the call
- val Expansion result for the macro. Ditto persistence.
-*/
-
-macro_item *
-macro_create(const uschar * name, const uschar * val, BOOL command_line)
-{
-macro_item * m = store_get(sizeof(macro_item));
-
-/* fprintf(stderr, "%s: '%s' '%s'\n", __FUNCTION__, name, val); */
-m->next = NULL;
-m->command_line = command_line;
-m->namelen = Ustrlen(name);
-m->replen = Ustrlen(val);
-m->name = name;
-m->replacement = val;
-if (mlast)
- mlast->next = m;
-else
- macros = m;
-mlast = m;
-return m;
-}
-
-
/* This function is called when a line that starts with an upper case letter is
encountered. The argument "line" should contain a complete logical line, and
start with the first letter of the macro name. The macro name and the
just skip this definition. It's an error to attempt to redefine a macro without
redef set to TRUE, or to redefine a macro when it hasn't been defined earlier.
It is also an error to define a macro whose name begins with the name of a
-previously defined macro. This is the requirement that make using a tree
-for macros hard; we must check all macros for the substring. Perhaps a
-sorted list, and a bsearch, would work?
+previously defined macro.
Note: it is documented that the other way round works. */
-for (m = macros; m; m = m->next)
+if ((m = macro_search_prefix(name)))
{
- if (Ustrcmp(m->name, name) == 0)
- {
- if (!m->command_line && !redef)
- {
- log_write(0, LOG_CONFIG|LOG_PANIC, "macro \"%s\" is already "
- "defined (use \"==\" if you want to redefine it", name);
- return FALSE;
- }
- break;
- }
-
- if (m->namelen < namelen && Ustrstr(name, m->name) != NULL)
+ if (m->namelen < namelen) /* substring match */
{
log_write(0, LOG_CONFIG|LOG_PANIC, "\"%s\" cannot be defined as "
"a macro because previously defined macro \"%s\" is a substring",
- name, m->name);
+ name, m->tnode.name);
+ return FALSE;
+ }
+ /* exact match */
+ if (!m->command_line && !redef)
+ {
+ log_write(0, LOG_CONFIG|LOG_PANIC, "macro \"%s\" is already "
+ "defined (use \"==\" if you want to redefine it", name);
return FALSE;
}
- /* We cannot have this test, because it is documented that a substring
- macro is permitted (there is even an example).
- *
- * if (m->namelen > namelen && Ustrstr(m->name, name) != NULL)
- * log_write(0, LOG_CONFIG|LOG_PANIC_DIE, "\"%s\" cannot be defined as "
- * "a macro because it is a substring of previously defined macro \"%s\"",
- * name, m->name);
- */
+ if (m->command_line) /* overriding cmdline definition */
+ return TRUE;
}
-/* Check for an overriding command-line definition. */
-
-if (m && m->command_line) return TRUE;
-
/* Redefinition must refer to an existing macro. */
if (redef)
if (m)
{
m->replen = Ustrlen(s);
- m->replacement = string_copy(s);
+ m->tnode.data.ptr = string_copy(s);
}
else
{
/* We have a new definition. */
else
- (void) macro_create(string_copy(name), string_copy(s), FALSE);
+ (void) macro_create(name, s, FALSE);
return TRUE;
}
{
uschar * ss = big_buffer + len;
uschar * s;
-macro_item * m;
/* Find the true start of the physical line - leading spaces are always
ignored. */
if (*s != '=') s = ss; /* Not a macro definition */
}
-/* Skip leading chars which cannot start a macro name, to avoid multiple
-pointless rescans in Ustrstr calls. */
-
-while (*s && !isupper(*s) && *s != '_') s++;
-
-/* For each defined macro, scan the line (from after XXX= if present),
-replacing all occurrences of the macro. */
+/* Scan the line (from after XXX= if present), replacing any macros. Rescan
+after replacement for any later-defined macros. */
*macro_found = FALSE;
-for (m = macros; m; m = m->next)
+while (*s)
{
- uschar * p, *pp;
- uschar * t = s;
-
- while ((p = Ustrstr(t, m->name)) != NULL)
+ if (isupper(*s) || *s == '_' && isupper(s[1]))
{
- int moveby;
+ macro_item * m;
+ unsigned mnum = 0;
-/* fprintf(stderr, "%s: matched '%s' in '%s'\n", __FUNCTION__, m->name, ss); */
- /* Expand the buffer if necessary */
-
- while (*newlen - m->namelen + m->replen + 1 > big_buffer_size)
+ while ((m = macro_search_largest_prefix(s)) && m->m_number > mnum)
{
- int newsize = big_buffer_size + BIG_BUFFER_SIZE;
- uschar *newbuffer = store_malloc(newsize);
- memcpy(newbuffer, big_buffer, *newlen + 1);
- p = newbuffer + (p - big_buffer);
- s = newbuffer + (s - big_buffer);
- ss = newbuffer + (ss - big_buffer);
- t = newbuffer + (t - big_buffer);
- big_buffer_size = newsize;
- store_free(big_buffer);
- big_buffer = newbuffer;
- }
+ uschar * pp;
+ int moveby;
- /* Shuffle the remaining characters up or down in the buffer before
- copying in the replacement text. Don't rescan the replacement for this
- same macro. */
+ /* Expand the buffer if necessary */
- pp = p + m->namelen;
- if ((moveby = m->replen - m->namelen) != 0)
- {
- memmove(p + m->replen, pp, (big_buffer + *newlen) - pp + 1);
- *newlen += moveby;
+ while (*newlen - m->namelen + m->replen + 1 > big_buffer_size)
+ {
+ int newsize = big_buffer_size + BIG_BUFFER_SIZE;
+ uschar *newbuffer = store_malloc(newsize);
+ memcpy(newbuffer, big_buffer, *newlen + 1);
+ s = newbuffer + (s - big_buffer);
+ ss = newbuffer + (ss - big_buffer);
+ big_buffer_size = newsize;
+ store_free(big_buffer);
+ big_buffer = newbuffer;
+ }
+
+ /* Shuffle the remaining characters up or down in the buffer before
+ copying in the replacement text. Don't rescan the replacement for this
+ same macro. */
+
+ pp = s + m->namelen;
+ if ((moveby = m->replen - m->namelen) != 0)
+ {
+ memmove(s + m->replen, pp, (big_buffer + *newlen) - pp + 1);
+ *newlen += moveby;
+ }
+ Ustrncpy(s, m->tnode.data.ptr, m->replen);
+ *macro_found = TRUE;
+ mnum = m->m_number;
}
- Ustrncpy(p, m->replacement, m->replen);
- t = p + m->replen;
- while (*t && !isupper(*t) && *t != '_') t++;
- *macro_found = TRUE;
}
+ s++;
}
/* An empty macro replacement at the start of a line could mean that ss no
fprintf(stderr, "exim: permission denied\n");
exit(EXIT_FAILURE);
}
- for (m = macros; m; m = m->next)
- if (!name || Ustrcmp(name, m->name) == 0)
- {
- if (names_only)
- printf("%s\n", CS m->name);
- else
- printf("%s=%s\n", CS m->name, CS m->replacement);
- if (name)
- return;
- }
+
if (name)
- printf("%s %s not found\n", type, name);
+ if ((m = macro_search(name)))
+ macro_print(m->tnode.name, m->tnode.data.ptr, (void *)(long)names_only);
+ else
+ printf("%s %s not found\n", type, name);
+ else
+ tree_walk(tree_macros, macro_print, (void *)(long)names_only);
+
return;
}
if (names_only)
{
- for (; d != NULL; d = d->next) printf("%s\n", CS d->name);
+ for (; d; d = d->next) printf("%s\n", CS d->name);
return;
}
/* Either search for a given driver, or print all of them */
-for (; d != NULL; d = d->next)
+for (; d; d = d->next)
{
- if (name == NULL)
+ if (!name)
printf("\n%s %s:\n", d->name, type);
- else if (Ustrcmp(d->name, name) != 0) continue;
+ else if (Ustrcmp(d->name, name) != 0)
+ continue;
for (ol = ol2; ol < ol2 + size; ol++)
- {
if ((ol->type & opt_hidden) == 0)
print_ol(ol, US ol->name, d, ol2, size, no_labels);
- }
for (ol = d->info->options;
ol < d->info->options + *(d->info->options_count); ol++)
- {
if ((ol->type & opt_hidden) == 0)
print_ol(ol, US ol->name, d, d->info->options, *(d->info->options_count), no_labels);
- }
- if (name != NULL) return;
+
+ if (name) return;
}
-if (name != NULL) printf("%s %s not found\n", type, name);
+if (name) printf("%s %s not found\n", type, name);
}
uschar * s; /* The string memory */
} gstring;
-/* Structure for remembering macros for the configuration file */
-
-typedef struct macro_item {
- struct macro_item * next;
- BOOL command_line;
- unsigned namelen;
- unsigned replen;
- const uschar * name;
- const uschar * replacement;
-} macro_item;
-
/* Structure for bit tables for debugging and logging */
typedef struct bit_table {
uschar name[1]; /* node name - variable length */
} tree_node;
+typedef struct tree_node_64 {
+ struct tree_node_64 *left; /* pointer to left child */
+ struct tree_node_64 *right; /* pointer to right child */
+ union
+ {
+ void *ptr; /* pointer to data */
+ int val; /* or integer data */
+ } data;
+ uschar balance; /* balancing factor */
+ uschar name[64]; /* node name - bounded length */
+} tree_node_64;
+
+/* Structure for remembering macros for the configuration file */
+
+typedef struct macro_item {
+ BOOL command_line;
+ unsigned namelen;
+ unsigned replen;
+ unsigned m_number;
+ tree_node tnode; /* contains name; ptr indicates val */
+} macro_item;
+
+typedef struct macro_item_64 {
+ BOOL command_line;
+ unsigned namelen;
+ unsigned replen;
+ unsigned m_number;
+ tree_node_64 tnode; /* contains name; ptr indicates val */
+} macro_item_64;
+
+#define tnode_to_mitem(tp) (tp ? (macro_item *) (CS(tp) - offsetof(macro_item, tnode)) : NULL)
+
/* Structure for holding time-limited data such as DNS returns.
We use this rather than extending tree_node to avoid wasting
space for most tree use (variables...) at the cost of complexity
#include "exim.h"
+#ifndef MACRO_PREDEF
/*************************************************
static void
write_tree(tree_node *p, FILE *f)
{
-fprintf(f, "%c%c %s\n",
- (p->left == NULL)? 'N':'Y', (p->right == NULL)? 'N':'Y', p->name);
-if (p->left != NULL) write_tree(p->left, f);
-if (p->right != NULL) write_tree(p->right, f);
+fprintf(f, "%c%c %s\n", p->left ? 'Y':'N', p->right ? 'Y':'N', p->name);
+if (p->left) write_tree(p->left, f);
+if (p->right) write_tree(p->right, f);
}
/* This is the top-level function, with the same arguments. */
void
tree_write(tree_node *p, FILE *f)
{
-if (p == NULL)
+if (!p)
{
fprintf(f, "XX\n");
return;
}
+#endif
/* Deal with an empty tree */
-if (p == NULL)
+if (!p)
{
*treebase = node;
return TRUE;
/* Deal with climbing down the tree, exiting from the loop
when we reach a leaf. */
- q = (c > 0)? &(p->right) : &(p->left);
+ q = c > 0 ? &p->right : &p->left;
p = *q;
- if (p == NULL) break;
+ if (!p) break;
/* Save the address of the pointer to the last node en route
which has a non-zero balance factor. */
next node after it along the route. */
s = *t;
-r = (Ustrcmp(node->name, s->name) > 0)? s->right : s->left;
+r = Ustrcmp(node->name, s->name) > 0 ? s->right : s->left;
/* Adjust balance factors along the route from s to node. */
p = r;
while (p != node)
- {
if (Ustrcmp(node->name, p->name) < 0)
{
p->balance = tree_lbal;
p->balance = tree_rbal;
p = p->right;
}
- }
/* Now the World-Famous Balancing Act */
-a = (Ustrcmp(node->name, s->name) < 0)? tree_lbal : tree_rbal;
+a = Ustrcmp(node->name, s->name) < 0 ? tree_lbal : tree_rbal;
-if (s->balance == 0) s->balance = (uschar)a; /* The tree has grown higher */
- else if (s->balance != (uschar)a) s->balance = 0; /* It's become more balanced */
-else /* It's got out of balance */
+if (s->balance == 0)
+ s->balance = (uschar)a; /* The tree has grown higher */
+else if (s->balance != (uschar)a)
+ s->balance = 0; /* It's become more balanced */
+else /* It's got out of balance */
{
/* Perform a single rotation */
{
if (a == tree_rbal)
{
- if (r->left == NULL) return TRUE; /* Bail out if tree corrupt */
+ if (!r->left) return TRUE; /* Bail out if tree corrupt */
p = r->left;
r->left = p->right;
p->right = r;
}
else
{
- if (r->right == NULL) return TRUE; /* Bail out if tree corrupt */
+ if (!r->right) return TRUE; /* Bail out if tree corrupt */
p = r->right;
r->right = p->left;
p->left = r;
p->right = s;
}
- s->balance = (p->balance == (uschar)a)? (uschar)(a^tree_bmask) : 0;
- r->balance = (p->balance == (uschar)(a^tree_bmask))? (uschar)a : 0;
+ s->balance = p->balance == (uschar)a ? (uschar)(a^tree_bmask) : 0;
+ r->balance = p->balance == (uschar)(a^tree_bmask) ? (uschar)a : 0;
p->balance = 0;
}
tree_node *
tree_search(tree_node *p, const uschar *name)
{
-while (p)
- {
- int c = Ustrcmp(name, p->name);
- if (c == 0) return p;
- p = c < 0 ? p->left : p->right;
- }
+int c;
+for ( ; p; p = c < 0 ? p->left : p->right)
+ if ((c = Ustrcmp(name, p->name)) == 0)
+ return p;
return NULL;
}
+#ifndef MACRO_PREDEF
/*************************************************
* Walk tree recursively and execute function *
tree_walk(p->right, f, ctx);
}
+#endif
/* End of tree.c */
projects / exim.git / commitdiff