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-rw-r--r--source3/lib/genparser.c783
1 files changed, 0 insertions, 783 deletions
diff --git a/source3/lib/genparser.c b/source3/lib/genparser.c
deleted file mode 100644
index 7476b5d0af..0000000000
--- a/source3/lib/genparser.c
+++ /dev/null
@@ -1,783 +0,0 @@
-/*
- Copyright (C) Andrew Tridgell <genstruct@tridgell.net> 2002
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*/
-
-/*
- automatic marshalling/unmarshalling system for C structures
-*/
-
-#include "includes.h"
-
-/* see if a range of memory is all zero. Used to prevent dumping of zero elements */
-static int all_zero(const char *ptr, unsigned size)
-{
- int i;
- if (!ptr) return 1;
- for (i=0;i<size;i++) {
- if (ptr[i]) return 0;
- }
- return 1;
-}
-
-/* encode a buffer of bytes into a escaped string */
-static char *encode_bytes(TALLOC_CTX *mem_ctx, const char *ptr, unsigned len)
-{
- const char *hexdig = "0123456789abcdef";
- char *ret, *p;
- unsigned i;
- ret = talloc(mem_ctx, len*3 + 1); /* worst case size */
- if (!ret) return NULL;
- for (p=ret,i=0;i<len;i++) {
- if (isalnum(ptr[i]) || isspace(ptr[i]) ||
- (ispunct(ptr[i]) && !strchr("\\{}", ptr[i]))) {
- *p++ = ptr[i];
- } else {
- unsigned char c = *(unsigned char *)(ptr+i);
- if (c == 0 && all_zero(ptr+i, len-i)) break;
- p[0] = '\\';
- p[1] = hexdig[c>>4];
- p[2] = hexdig[c&0xF];
- p += 3;
- }
- }
-
- *p = 0;
-
- return ret;
-}
-
-/* decode an escaped string from encode_bytes() into a buffer */
-static char *decode_bytes(TALLOC_CTX *mem_ctx, const char *s, unsigned *len)
-{
- char *ret, *p;
- unsigned i;
- int slen = strlen(s) + 1;
-
- ret = talloc(mem_ctx, slen); /* worst case length */
- if (!ret)
- return NULL;
- memset(ret, 0, slen);
-
- if (*s == '{') s++;
-
- for (p=ret,i=0;s[i];i++) {
- if (s[i] == '}') {
- break;
- } else if (s[i] == '\\') {
- unsigned v;
- if (sscanf(&s[i+1], "%02x", &v) != 1 || v > 255) {
- return NULL;
- }
- *(unsigned char *)p = v;
- p++;
- i += 2;
- } else {
- *p++ = s[i];
- }
- }
- *p = 0;
-
- (*len) = (unsigned)(p - ret);
-
- return ret;
-}
-
-/* the add*() functions deal with adding things to a struct
- parse_string */
-
-/* allocate more space if needed */
-static int addgen_alloc(TALLOC_CTX *mem_ctx, struct parse_string *p, int n)
-{
- if (p->length + n <= p->allocated) return 0;
- p->allocated = p->length + n + 200;
- p->s = talloc_realloc(mem_ctx, p->s, p->allocated);
- if (!p->s) {
- errno = ENOMEM;
- return -1;
- }
- return 0;
-}
-
-/* add a character to the buffer */
-static int addchar(TALLOC_CTX *mem_ctx, struct parse_string *p, char c)
-{
- if (addgen_alloc(mem_ctx, p, 2) != 0) {
- return -1;
- }
- p->s[p->length++] = c;
- p->s[p->length] = 0;
- return 0;
-}
-
-/* add a string to the buffer */
-int addstr(TALLOC_CTX *mem_ctx, struct parse_string *p, const char *s)
-{
- int len = strlen(s);
- if (addgen_alloc(mem_ctx, p, len+1) != 0) {
- return -1;
- }
- memcpy(p->s + p->length, s, len+1);
- p->length += len;
- return 0;
-}
-
-/* add a string to the buffer with a tab prefix */
-static int addtabbed(TALLOC_CTX *mem_ctx, struct parse_string *p, const char *s, unsigned indent)
-{
- int len = strlen(s);
- if (addgen_alloc(mem_ctx, p, indent+len+1) != 0) {
- return -1;
- }
- while (indent--) {
- p->s[p->length++] = '\t';
- }
- memcpy(p->s + p->length, s, len+1);
- p->length += len;
- return 0;
-}
-
-/* note! this can only be used for results up to 60 chars wide! */
-int addshort(TALLOC_CTX *mem_ctx, struct parse_string *p, const char *fmt, ...)
-{
- char buf[60];
- int n;
- va_list ap;
- va_start(ap, fmt);
- n = vsnprintf(buf, sizeof(buf), fmt, ap);
- va_end(ap);
- if (addgen_alloc(mem_ctx, p, n + 1) != 0) {
- return -1;
- }
- if (n != 0) {
- memcpy(p->s + p->length, buf, n);
- }
- p->length += n;
- p->s[p->length] = 0;
- return 0;
-}
-
-/*
- this is here to make it easier for people to write dump functions
- for their own types
- */
-int gen_addgen(TALLOC_CTX *mem_ctx, struct parse_string *p, const char *fmt, ...)
-{
- char *buf = NULL;
- int n;
- va_list ap;
- va_start(ap, fmt);
- n = vasprintf(&buf, fmt, ap);
- va_end(ap);
- if (addgen_alloc(mem_ctx, p, n + 1) != 0) {
- if (buf) free(buf);
- return -1;
- }
- if (n != 0) {
- memcpy(p->s + p->length, buf, n);
- }
- p->length += n;
- p->s[p->length] = 0;
- if (buf) free(buf);
- return 0;
-}
-
-/* dump a enumerated type */
-int gen_dump_enum(TALLOC_CTX *mem_ctx,
- const struct enum_struct *einfo,
- struct parse_string *p,
- const char *ptr,
- unsigned indent)
-{
- unsigned v = *(unsigned *)ptr;
- int i;
- for (i=0;einfo[i].name;i++) {
- if (v == einfo[i].value) {
- addstr(mem_ctx, p, einfo[i].name);
- return 0;
- }
- }
- /* hmm, maybe we should just fail? */
- return gen_dump_unsigned(mem_ctx, p, ptr, indent);
-}
-
-/* dump a single non-array element, hanlding struct and enum */
-static int gen_dump_one(TALLOC_CTX *mem_ctx,
- struct parse_string *p,
- const struct parse_struct *pinfo,
- const char *ptr,
- unsigned indent)
-{
- if (pinfo->dump_fn == gen_dump_char && pinfo->ptr_count == 1) {
- char *s = encode_bytes(mem_ctx, ptr, strlen(ptr));
- if (addchar(mem_ctx, p,'{') ||
- addstr(mem_ctx, p, s) ||
- addstr(mem_ctx, p, "}")) {
- return -1;
- }
- return 0;
- }
-
- return pinfo->dump_fn(mem_ctx, p, ptr, indent);
-}
-
-/* handle dumping of an array of arbitrary type */
-static int gen_dump_array(TALLOC_CTX *mem_ctx,
- struct parse_string *p,
- const struct parse_struct *pinfo,
- const char *ptr,
- int array_len,
- int indent)
-{
- int i, count=0;
-
- /* special handling of fixed length strings */
- if (array_len != 0 &&
- pinfo->ptr_count == 0 &&
- pinfo->dump_fn == gen_dump_char) {
- char *s = encode_bytes(mem_ctx, ptr, array_len);
- if (!s) return -1;
- if (addtabbed(mem_ctx, p, pinfo->name, indent) ||
- addstr(mem_ctx, p, " = {") ||
- addstr(mem_ctx, p, s) ||
- addstr(mem_ctx, p, "}\n")) {
- return -1;
- }
- return 0;
- }
-
- for (i=0;i<array_len;i++) {
- const char *p2 = ptr;
- unsigned size = pinfo->size;
-
- /* generic pointer dereference */
- if (pinfo->ptr_count) {
- p2 = *(const char **)ptr;
- size = sizeof(void *);
- }
-
- if ((count || pinfo->ptr_count) &&
- !(pinfo->flags & FLAG_ALWAYS) &&
- all_zero(ptr, size)) {
- ptr += size;
- continue;
- }
- if (count == 0) {
- if (addtabbed(mem_ctx, p, pinfo->name, indent) ||
- addshort(mem_ctx, p, " = %u:", i)) {
- return -1;
- }
- } else {
- if (addshort(mem_ctx, p, ", %u:", i) != 0) {
- return -1;
- }
- }
- if (gen_dump_one(mem_ctx, p, pinfo, p2, indent) != 0) {
- return -1;
- }
- ptr += size;
- count++;
- }
- if (count) {
- return addstr(mem_ctx, p, "\n");
- }
- return 0;
-}
-
-/* find a variable by name in a loaded structure and return its value
- as an integer. Used to support dynamic arrays */
-static int find_var(const struct parse_struct *pinfo,
- const char *data,
- const char *var)
-{
- int i;
- const char *ptr;
-
- /* this allows for constant lengths */
- if (isdigit(*var)) {
- return atoi(var);
- }
-
- for (i=0;pinfo[i].name;i++) {
- if (strcmp(pinfo[i].name, var) == 0) break;
- }
- if (!pinfo[i].name) return -1;
-
- ptr = data + pinfo[i].offset;
-
- switch (pinfo[i].size) {
- case sizeof(int):
- return *(int *)ptr;
- case sizeof(char):
- return *(char *)ptr;
- }
-
- return -1;
-}
-
-
-int gen_dump_struct(TALLOC_CTX *mem_ctx,
- const struct parse_struct *pinfo,
- struct parse_string *p,
- const char *ptr,
- unsigned indent)
-{
- char *s = gen_dump(mem_ctx, pinfo, ptr, indent+1);
- if (!s) return -1;
- if (addstr(mem_ctx, p, "{\n") ||
- addstr(mem_ctx, p, s) ||
- addtabbed(mem_ctx, p, "}", indent)) {
- return -1;
- }
- return 0;
-}
-
-static int gen_dump_string(TALLOC_CTX *mem_ctx,
- struct parse_string *p,
- const struct parse_struct *pinfo,
- const char *data,
- unsigned indent)
-{
- const char *ptr = *(char **)data;
- char *s = encode_bytes(mem_ctx, ptr, strlen(ptr));
- if (addtabbed(mem_ctx, p, pinfo->name, indent) ||
- addstr(mem_ctx, p, " = ") ||
- addchar(mem_ctx, p, '{') ||
- addstr(mem_ctx, p, s) ||
- addstr(mem_ctx, p, "}\n")) {
- return -1;
- }
- return 0;
-}
-
-/*
- find the length of a nullterm array
-*/
-static int len_nullterm(const char *ptr, int size, int array_len)
-{
- int len;
-
- if (size == 1) {
- len = strnlen(ptr, array_len);
- } else {
- for (len=0; len < array_len; len++) {
- if (all_zero(ptr+len*size, size)) break;
- }
- }
-
- if (len == 0) len = 1;
-
- return len;
-}
-
-
-/* the generic dump routine. Scans the parse information for this structure
- and processes it recursively */
-char *gen_dump(TALLOC_CTX *mem_ctx,
- const struct parse_struct *pinfo,
- const char *data,
- unsigned indent)
-{
- struct parse_string p;
- int i;
-
- p.length = 0;
- p.allocated = 0;
- p.s = NULL;
-
- if (addstr(mem_ctx, &p, "") != 0) {
- return NULL;
- }
-
- for (i=0;pinfo[i].name;i++) {
- const char *ptr = data + pinfo[i].offset;
- unsigned size = pinfo[i].size;
-
- if (pinfo[i].ptr_count) {
- size = sizeof(void *);
- }
-
- /* special handling for array types */
- if (pinfo[i].array_len) {
- unsigned len = pinfo[i].array_len;
- if (pinfo[i].flags & FLAG_NULLTERM) {
- len = len_nullterm(ptr, size, len);
- }
- if (gen_dump_array(mem_ctx, &p, &pinfo[i], ptr,
- len, indent)) {
- goto failed;
- }
- continue;
- }
-
- /* and dynamically sized arrays */
- if (pinfo[i].dynamic_len) {
- int len = find_var(pinfo, data, pinfo[i].dynamic_len);
- struct parse_struct p2 = pinfo[i];
- if (len < 0) {
- goto failed;
- }
- if (len > 0) {
- if (pinfo[i].flags & FLAG_NULLTERM) {
- len = len_nullterm(*(char **)ptr,
- pinfo[i].size, len);
- }
- p2.ptr_count--;
- p2.dynamic_len = NULL;
- if (gen_dump_array(mem_ctx, &p, &p2,
- *(char **)ptr,
- len, indent) != 0) {
- goto failed;
- }
- }
- continue;
- }
-
- /* don't dump zero elements */
- if (!(pinfo[i].flags & FLAG_ALWAYS) && all_zero(ptr, size)) continue;
-
- /* assume char* is a null terminated string */
- if (pinfo[i].size == 1 && pinfo[i].ptr_count == 1 &&
- pinfo[i].dump_fn == gen_dump_char) {
- if (gen_dump_string(mem_ctx, &p, &pinfo[i], ptr, indent) != 0) {
- goto failed;
- }
- continue;
- }
-
- /* generic pointer dereference */
- if (pinfo[i].ptr_count) {
- ptr = *(const char **)ptr;
- }
-
- if (addtabbed(mem_ctx, &p, pinfo[i].name, indent) ||
- addstr(mem_ctx, &p, " = ") ||
- gen_dump_one(mem_ctx, &p, &pinfo[i], ptr, indent) ||
- addstr(mem_ctx, &p, "\n")) {
- goto failed;
- }
- }
- return p.s;
-
-failed:
- return NULL;
-}
-
-/* search for a character in a string, skipping over sections within
- matching braces */
-static char *match_braces(char *s, char c)
-{
- int depth = 0;
- while (*s) {
- switch (*s) {
- case '}':
- depth--;
- break;
- case '{':
- depth++;
- break;
- }
- if (depth == 0 && *s == c) {
- return s;
- }
- s++;
- }
- return s;
-}
-
-/* parse routine for enumerated types */
-int gen_parse_enum(TALLOC_CTX *mem_ctx,
- const struct enum_struct *einfo,
- char *ptr,
- const char *str)
-{
- unsigned v;
- int i;
-
- if (isdigit(*str)) {
- if (sscanf(str, "%u", &v) != 1) {
- errno = EINVAL;
- return -1;
- }
- *(unsigned *)ptr = v;
- return 0;
- }
-
- for (i=0;einfo[i].name;i++) {
- if (strcmp(einfo[i].name, str) == 0) {
- *(unsigned *)ptr = einfo[i].value;
- return 0;
- }
- }
-
- /* unknown enum value?? */
- return -1;
-}
-
-
-/* parse all base types */
-static int gen_parse_base(TALLOC_CTX *mem_ctx,
- const struct parse_struct *pinfo,
- char *ptr,
- const char *str)
-{
- if (pinfo->parse_fn == gen_parse_char && pinfo->ptr_count==1) {
- unsigned len;
- char *s = decode_bytes(mem_ctx, str, &len);
- if (!s) return -1;
- *(char **)ptr = s;
- return 0;
- }
-
- if (pinfo->ptr_count) {
- unsigned size = pinfo->ptr_count>1?sizeof(void *):pinfo->size;
- struct parse_struct p2 = *pinfo;
- *(void **)ptr = talloc(mem_ctx, size);
- if (! *(void **)ptr) {
- return -1;
- }
- memset(*(void **)ptr, 0, size);
- ptr = *(char **)ptr;
- p2.ptr_count--;
- return gen_parse_base(mem_ctx, &p2, ptr, str);
- }
-
- return pinfo->parse_fn(mem_ctx, ptr, str);
-}
-
-/* parse a generic array */
-static int gen_parse_array(TALLOC_CTX *mem_ctx,
- const struct parse_struct *pinfo,
- char *ptr,
- const char *str,
- int array_len)
-{
- char *p, *p2;
- unsigned size = pinfo->size;
-
- /* special handling of fixed length strings */
- if (array_len != 0 &&
- pinfo->ptr_count == 0 &&
- pinfo->dump_fn == gen_dump_char) {
- unsigned len = 0;
- char *s = decode_bytes(mem_ctx, str, &len);
- if (!s || (len > array_len)) return -1;
- memset(ptr, 0, array_len);
- memcpy(ptr, s, len);
- return 0;
- }
-
- if (pinfo->ptr_count) {
- size = sizeof(void *);
- }
-
- while (*str) {
- unsigned idx;
- int done;
-
- idx = atoi(str);
- p = strchr(str,':');
- if (!p) break;
- p++;
- p2 = match_braces(p, ',');
- done = (*p2 != ',');
- *p2 = 0;
-
- if (*p == '{') {
- p++;
- p[strlen(p)-1] = 0;
- }
-
- if (gen_parse_base(mem_ctx, pinfo, ptr + idx*size, p) != 0) {
- return -1;
- }
-
- if (done) break;
- str = p2+1;
- }
-
- return 0;
-}
-
-/* parse one element, hanlding dynamic and static arrays */
-static int gen_parse_one(TALLOC_CTX *mem_ctx,
- const struct parse_struct *pinfo,
- const char *name,
- char *data,
- const char *str)
-{
- int i;
- for (i=0;pinfo[i].name;i++) {
- if (strcmp(pinfo[i].name, name) == 0) {
- break;
- }
- }
- if (pinfo[i].name == NULL) {
- return 0;
- }
-
- if (pinfo[i].array_len) {
- return gen_parse_array(mem_ctx, &pinfo[i],
- data+pinfo[i].offset,
- str, pinfo[i].array_len);
- }
-
- if (pinfo[i].dynamic_len) {
- int len = find_var(pinfo, data, pinfo[i].dynamic_len);
- if (len < 0) {
- errno = EINVAL;
- return -1;
- }
- if (len > 0) {
- struct parse_struct p2 = pinfo[i];
- char *ptr;
- unsigned size = pinfo[i].ptr_count>1?sizeof(void*):pinfo[i].size;
- ptr = talloc(mem_ctx, len*size);
- if (!ptr) {
- errno = ENOMEM;
- return -1;
- }
- memset(ptr, 0, len*size);
- *((char **)(data + pinfo[i].offset)) = ptr;
- p2.ptr_count--;
- p2.dynamic_len = NULL;
- return gen_parse_array(mem_ctx, &p2, ptr, str, len);
- }
- return 0;
- }
-
- return gen_parse_base(mem_ctx, &pinfo[i], data + pinfo[i].offset, str);
-}
-
-int gen_parse_struct(TALLOC_CTX * mem_ctx, const struct parse_struct *pinfo, char *ptr, const char *str)
-{
- return gen_parse(mem_ctx, pinfo, ptr, str);
-}
-
-/* the main parse routine */
-int gen_parse(TALLOC_CTX *mem_ctx, const struct parse_struct *pinfo, char *data, const char *s)
-{
- char *str, *s0;
-
- s0 = talloc_strdup(mem_ctx, s);
- str = s0;
-
- while (*str) {
- char *p;
- char *name;
- char *value;
-
- /* skip leading whitespace */
- while (isspace(*str)) str++;
-
- p = strchr(str, '=');
- if (!p) break;
- value = p+1;
- while (p > str && isspace(*(p-1))) {
- p--;
- }
-
- *p = 0;
- name = str;
-
- while (isspace(*value)) value++;
-
- if (*value == '{') {
- str = match_braces(value, '}');
- value++;
- } else {
- str = match_braces(value, '\n');
- }
-
- *str++ = 0;
-
- if (gen_parse_one(mem_ctx, pinfo, name, data, value) != 0) {
- return -1;
- }
- }
-
- return 0;
-}
-
-
-
-/* for convenience supply some standard dumpers and parsers here */
-
-int gen_parse_char(TALLOC_CTX *mem_ctx, char *ptr, const char *str)
-{
- *(unsigned char *)ptr = atoi(str);
- return 0;
-}
-
-int gen_parse_int(TALLOC_CTX *mem_ctx, char *ptr, const char *str)
-{
- *(int *)ptr = atoi(str);
- return 0;
-}
-
-int gen_parse_unsigned(TALLOC_CTX *mem_ctx, char *ptr, const char *str)
-{
- *(unsigned *)ptr = strtoul(str, NULL, 10);
- return 0;
-}
-
-int gen_parse_time_t(TALLOC_CTX *mem_ctx, char *ptr, const char *str)
-{
- *(time_t *)ptr = strtoul(str, NULL, 10);
- return 0;
-}
-
-int gen_parse_double(TALLOC_CTX *mem_ctx, char *ptr, const char *str)
-{
- *(double *)ptr = atof(str);
- return 0;
-}
-
-int gen_parse_float(TALLOC_CTX *mem_ctx, char *ptr, const char *str)
-{
- *(float *)ptr = atof(str);
- return 0;
-}
-
-int gen_dump_char(TALLOC_CTX *mem_ctx, struct parse_string *p, const char *ptr, unsigned indent)
-{
- return addshort(mem_ctx, p, "%u", *(unsigned char *)(ptr));
-}
-
-int gen_dump_int(TALLOC_CTX *mem_ctx, struct parse_string *p, const char *ptr, unsigned indent)
-{
- return addshort(mem_ctx, p, "%d", *(int *)(ptr));
-}
-
-int gen_dump_unsigned(TALLOC_CTX *mem_ctx, struct parse_string *p, const char *ptr, unsigned indent)
-{
- return addshort(mem_ctx, p, "%u", *(unsigned *)(ptr));
-}
-
-int gen_dump_time_t(TALLOC_CTX *mem_ctx, struct parse_string *p, const char *ptr, unsigned indent)
-{
- return addshort(mem_ctx, p, "%u", *(time_t *)(ptr));
-}
-
-int gen_dump_double(TALLOC_CTX *mem_ctx, struct parse_string *p, const char *ptr, unsigned indent)
-{
- return addshort(mem_ctx, p, "%lg", *(double *)(ptr));
-}
-
-int gen_dump_float(TALLOC_CTX *mem_ctx, struct parse_string *p, const char *ptr, unsigned indent)
-{
- return addshort(mem_ctx, p, "%g", *(float *)(ptr));
-}
generated by cgit (git 2.34.1) at 2024-12-26 22:25:56 +0000