scconf.c

读写Smart卡加解密接口的程序

	while (list) {
		len++;
		list = list->next;
	}
	return len;
}

int scconf_list_strings_length(const scconf_list * list)
{
	int len = 0;

	while (list && list->data) {
		len += strlen(list->data) + 1;
		list = list->next;
	}
	return len;
}

char *scconf_list_strdup(const scconf_list * list, const char *filler)
{
	char *buf = NULL;
	int len = 0;

	if (!list) {
		return NULL;
	}
	len = scconf_list_strings_length(list);
	if (filler) {
		len += scconf_list_array_length(list) * (strlen(filler) + 1);
	}
	buf = (char *) malloc(len);
	if (!buf) {
		return NULL;
	}
	memset(buf, 0, len);
	while (list && list->data) {
		strcat(buf, list->data);
		if (filler) {
			strcat(buf, filler);
		}
		list = list->next;
	}
	if (filler)
		buf[strlen(buf) - strlen(filler)] = '\0';
	return buf;
}

static scconf_block **getblocks(const scconf_context * config, const scconf_block * block, scconf_entry * entry)
{
	scconf_block **blocks = NULL;

	blocks = scconf_find_blocks(config, block, entry->name, NULL);
	if (blocks) {
		if (blocks[0] != NULL) {
			if (config->debug) {
				fprintf(stderr, "block found (%s)\n", entry->name);
			}
			return blocks;
		}
		free(blocks);
		blocks = NULL;
	}
	if (scconf_find_list(block, entry->name) != NULL) {
		if (config->debug) {
			fprintf(stderr, "list found (%s)\n", entry->name);
		}
		blocks = (scconf_block **) realloc(blocks, sizeof(scconf_block *) * 2);
		if (!blocks)
			return NULL;
		blocks[0] = (scconf_block *) block;
		blocks[1] = NULL;
	}
	return blocks;
}

static int parse_entries(const scconf_context * config, const scconf_block * block, scconf_entry * entry, int depth);

static int parse_type(const scconf_context * config, const scconf_block * block, scconf_entry * entry, int depth)
{
	void *parm = entry->parm;
	size_t *len = (size_t *) entry->arg;
	int (*callback_func) (const scconf_context * config, const scconf_block * block, scconf_entry * entry, int depth) =
	(int (*)(const scconf_context *, const scconf_block *, scconf_entry *, int)) parm;
	int r = 0;

	if (config->debug) {
		fprintf(stderr, "decoding '%s'\n", entry->name);
	}
	switch (entry->type) {
	case SCCONF_CALLBACK:
		if (parm) {
			r = callback_func(config, block, entry, depth);
		}
		break;
	case SCCONF_BLOCK:
		if (parm) {
			r = parse_entries(config, block, (scconf_entry *) parm, depth + 1);
		}
		break;
	case SCCONF_LIST:
		{
			const scconf_list *val = scconf_find_list(block, entry->name);

			if (!val) {
				r = 1;
				break;
			}
			if (parm) {
				if (entry->flags & SCCONF_ALLOC) {
					scconf_list *dest = NULL;

					for (; val != NULL; val = val->next) {
						if (!scconf_list_add(&dest, val->data)) {
							r = 1;
							break;
						}
					}
					*((scconf_list **) parm) = dest;
				} else {
					*((const scconf_list **) parm) = val;
				}
			}
			if (entry->flags & SCCONF_VERBOSE) {
				char *buf = scconf_list_strdup(val, ", ");
				printf("%s = %s\n", entry->name, buf);
				free(buf);
			}
		}
		break;
	case SCCONF_BOOLEAN:
		{
			int val = scconf_get_bool(block, entry->name, 0);

			if (parm) {
				*((int *) parm) = val;
			}
			if (entry->flags & SCCONF_VERBOSE) {
				printf("%s = %s\n", entry->name, val == 0 ? "false" : "true");
			}
		}
		break;
	case SCCONF_INTEGER:
		{
			int val = scconf_get_int(block, entry->name, 0);

			if (parm) {
				*((int *) parm) = val;
			}
			if (entry->flags & SCCONF_VERBOSE) {
				printf("%s = %i\n", entry->name, val);
			}
		}
		break;
	case SCCONF_STRING:
		{
			const char *val = scconf_get_str(block, entry->name, NULL);
			int vallen = val ? strlen(val) : 0;

			if (!vallen) {
				r = 1;
				break;
			}
			if (parm) {
				if (entry->flags & SCCONF_ALLOC) {
					char **buf = (char **) parm;
					*buf = (char *) malloc(vallen + 1);
					if (*buf == NULL) {
						r = 1;
						break;
					}
					memset(*buf, 0, vallen + 1);
					if (len) {
						*len = vallen;
					}
					parm = *buf;
				}
				memcpy((char *) parm, val, vallen);
			}
			if (entry->flags & SCCONF_VERBOSE) {
				printf("%s = %s\n", entry->name, val);
			}
		}
		break;
	default:
		fprintf(stderr, "invalid configuration type: %d\n", entry->type);
	}
	if (r) {
		fprintf(stderr, "decoding of configuration entry '%s' failed.\n", entry->name);
		return r;
	}
	entry->flags |= SCCONF_PRESENT;
	return 0;
}

static int parse_entries(const scconf_context * config, const scconf_block * block, scconf_entry * entry, int depth)
{
	int r, i, idx;
	scconf_entry *e;
	scconf_block **blocks = NULL;

	if (config->debug) {
		fprintf(stderr, "parse_entries called, depth %d\n", depth);
	}
	for (idx = 0; entry[idx].name; idx++) {
		e = &entry[idx];
		r = 0;
		blocks = getblocks(config, block, e);
		if (!blocks) {
			if (!(e->flags & SCCONF_MANDATORY)) {
				if (config->debug)
					fprintf(stderr, "optional configuration entry '%s' not present\n",
						e->name);
				continue;
			}
			fprintf(stderr, "mandatory configuration entry '%s' not found\n", e->name);
			return 1;
		}
		for (i = 0; blocks[i]; i++) {
			r = parse_type(config, blocks[i], e, depth);
			if (r) {
				free(blocks);
				return r;
			}
			if (!(e->flags & SCCONF_ALL_BLOCKS))
				break;
		}
		free(blocks);
	}
	return 0;
}

int scconf_parse_entries(const scconf_context * config, const scconf_block * block, scconf_entry * entry)
{
	if (!entry)
		return 1;
	if (!block)
		block = config->root;
	return parse_entries(config, block, entry, 0);
}

static int write_entries(scconf_context * config, scconf_block * block, scconf_entry * entry, int depth);

static int write_type(scconf_context * config, scconf_block * block, scconf_entry * entry, int depth)
{
	void *parm = entry->parm;
	void *arg = entry->arg;
	int (*callback_func) (scconf_context * config, scconf_block * block, scconf_entry * entry, int depth) =
	(int (*)(scconf_context *, scconf_block *, scconf_entry *, int)) parm;
	int r = 0;

	if (config->debug) {
		fprintf(stderr, "encoding '%s'\n", entry->name);
	}
	switch (entry->type) {
	case SCCONF_CALLBACK:
		if (parm) {
			r = callback_func(config, block, entry, depth);
		}
		break;
	case SCCONF_BLOCK:
		if (parm) {
			scconf_block *subblock;
			const scconf_list *name = (const scconf_list *) arg;

			subblock = scconf_block_add(config, block, entry->name, name);
			r = write_entries(config, subblock, (scconf_entry *) parm, depth + 1);
		}
		break;
	case SCCONF_LIST:
		if (parm) {
			const scconf_list *val = (const scconf_list *) parm;

			scconf_item_add(config, block, NULL, SCCONF_ITEM_TYPE_VALUE, entry->name, val);
			if (entry->flags & SCCONF_VERBOSE) {
				char *buf = scconf_list_strdup(val, ", ");
				printf("%s = %s\n", entry->name, buf);
				free(buf);
			}
		}
		break;
	case SCCONF_BOOLEAN:
		if (parm) {
			const int val = parm ? (int) parm : 0;

			scconf_put_bool(block, entry->name, val);
			if (entry->flags & SCCONF_VERBOSE) {
				printf("%s = %s\n", entry->name, val == 0 ? "false" : "true");
			}
		}
		break;
	case SCCONF_INTEGER:
		if (parm) {
			const int val = parm ? (int) parm : 0;

			scconf_put_int(block, entry->name, val);
			if (entry->flags & SCCONF_VERBOSE) {
				printf("%s = %i\n", entry->name, val);
			}
		}
		break;
	case SCCONF_STRING:
		if (parm) {
			const char *val = parm ? (const char *) parm : "";

			scconf_put_str(block, entry->name, val);
			if (entry->flags & SCCONF_VERBOSE) {
				printf("%s = %s\n", entry->name, val);
			}
		}
		break;
	default:
		fprintf(stderr, "invalid configuration type: %d\n", entry->type);
	}
	if (r) {
		fprintf(stderr, "encoding of configuration entry '%s' failed.\n", entry->name);
		return r;
	}
	entry->flags |= SCCONF_PRESENT;
	return 0;
}

static int write_entries(scconf_context * config, scconf_block * block, scconf_entry * entry, int depth)
{
	int r, idx;
	scconf_entry *e;

	if (config->debug) {
		fprintf(stderr, "write_entries called, depth %d\n", depth);
	}
	for (idx = 0; entry[idx].name; idx++) {
		e = &entry[idx];
		r = 0;
		r = write_type(config, block, e, depth);
		if (r) {
			return r;
		}
	}
	return 0;
}

int scconf_write_entries(scconf_context * config, scconf_block * block, scconf_entry * entry)
{
	if (!entry)
		return 1;
	if (!block)
		block = config->root;
	return write_entries(config, block, entry, 0);
}