/* Returns pointer to a parsed sentence object, Returns NULL is parsing failed */
struct sentence *parse_sentence(struct sentence *new_sen, char *line) {
char word[MAXLINE];
char *line_pointer = line;
int coding_times;
/* fetch the first word*/
getword(line_pointer, word, sizeof(word));
/* If the first word is empty, this is an empty sentence*/
if (strlen(line) == 1) {
new_sen->type = EMPTY;
return new_sen;
}
else if (strncmp(COMMENT_SIGN, word, 1) == 0) {
new_sen->type = COMMENT;
return new_sen;
}
/* Parsing the label of the sentence */
if (sscanf(line_pointer, " %[a-zA-Z0-9]: ", new_sen->label) == 1 && *(strchr(line, new_sen->label[0]) + strlen(new_sen->label)) == ':') {
/* Skipping the label start */
line_pointer = strchr(line_pointer, ':') + 1;
}
/* nullifing the value that was read into new_sen.label */
else
strcpy(new_sen->label, "");
/* trying to scan instruction into word, if successful, moving on to parsing */
if (sscanf(line_pointer, INSTRUCTION_FORMAT, word) == 1) {
/* Moving the line pointer over the intruction*/
line_pointer = strchr(line_pointer, '.') + strlen(word) + 1;
return parse_instructions(new_sen, word, line_pointer);
}
/* The sentence is operation sentence only if the first word is not empty*/
else if (sscanf(line_pointer, " %3[a-z]%1d ", word, &coding_times) == 2 || sscanf(line_pointer, " %4[a-z]%1d ", word, &coding_times) == 2) {
/* setting the line pointer over the operator */
line_pointer = strchr(line_pointer, word[0]) + 4;
return parse_operation(new_sen, line_pointer, word, coding_times);
}
return NULL;
}
/* file format: <op count>
add <value>
delete <value>
delete attribute
rename <value> to <value>
*/
void parse_operations_file (char *name)
{
FILE *file = fopen (name, "r");
char line [256];
int i;
if (file == NULL)
{
printf ("failed to open operations file %s: error = %d\n", name, errno);
print_usage ();
exit (1);
}
i = 0;
while (fgets (line, sizeof (line), file))
{
if (i == 0)
{
/* read operation count */
sim.op_count = atoi (line);
if (sim.op_count < 1 || sim.op_count > MAX_OPS/2)
{
printf ("invalid operation count - %d; value must be between 1 and %d\n",
sim.op_count, MAX_OPS/2);
print_usage ();
exit (1);
}
else
{
sim.ops = (Operation*)malloc (sim.op_count * sizeof (Operation));
}
}
else
{
if (strlen (line) == 0) /* skip empty lines */
continue;
parse_operation (line, i);
}
i ++;
}
}
// confige line example:
// mod_header [direction add|del|modify header_name [header_value]]{1,..n} allow|deny acl
// ??????ͷ??ʼ?????? allow|deny ??ֹ
// ????????????
static int func_sys_parse_param(char *cfg_line)
{
assert(cfg_line);
struct mod_conf_param* data = NULL;
char* token = NULL;
int ret = 0;
int i;
// add by xueye.zhao
// 2013/6/19
# if 0
//?ҵ?allow????deny?? Ȼ????֮???Ľ?ȥ
//zhoudshu add for bug mantis 0002002
char* tmptoken = NULL;
char* tmp_line = xstrdup(cfg_line);
if ((tmptoken = strtok(tmp_line, w_space)) == NULL)
{
debug(98, 3)("(mod_header) -> parse line error\n");
safe_free(tmp_line);
return -1;
}
int haskey = 0;
while(NULL != (tmptoken = strtok(NULL, w_space)))
{
if(strcmp("allow",tmptoken) == 0 || strcmp("deny",tmptoken) == 0){
haskey = 1;
}
}
safe_free(tmp_line);
if(haskey != 1){
debug(98, 3)("(mod_header) -> has not key of allow or deny in config line \n");
return -1;
}
#endif
if (NULL == strstr(cfg_line, " allow "))
{
debug(98, 3)("(mod_header) -> has not key of allow or deny in config line \n");
return -1;
}
//end add
//开始截取
if ((token = strtok(cfg_line, w_space)) != NULL)
{
if(strcmp(token, "mod_header"))
goto errA;
}
else
{
debug(98, 3)("(mod_header) -> parse line error\n");
goto errA;
}
data = mod_config_pool_alloc();
data->count = 0;
//?????￪ʼѭ??ȡ??????..???Dz???+header+value?ķ?ʽ, ????,ѭ????????
while(NULL != (token = strtok(NULL, w_space)))
{
if(strcmp("allow",token) == 0 || strcmp("deny",token) == 0 || strcmp("reply_check",token) == 0) {
break;
}
struct action_part* part;
struct header_info* info;
part = action_part_pool_alloc();
info = header_info_pool_alloc();
data->acp[data->count] = part;
data->acp[data->count]->hdr = info;
data->count++;
part->direct = atoi(token); //fetch the direction
if(part->direct > 3 || part->direct < 0)
{
debug(98, 3)("(mod_header) -> parse direction error, cant be %d\n", part->direct);
goto err;
}
//???￪ʼ?ǽ???????????
if (NULL == (token = strtok(NULL, w_space)))
{
debug(98, 3)("(mod_header) -> parse line data does not existed\n");
goto err;
}
ret = parse_operation(part, token);//??????????, ???????????ṹ
if(-1 == ret)
{
debug(98, 3)("(mod_header) -> parse line operation error, cant be %s\n", token);
goto err;
}
//?????и?header, ?????϶??е?
if (NULL == (token = strtok(NULL, w_space)))
{
debug(98, 3)("(mod_header) -> parse line data does not existed\n");
goto err;
}
stringInit(&info->header, token);
//?и???header, value?Ͳ?һ??????. ????Ҫ??????��?ж???. ??????Ҫ?и?value, ????
if (1 != part->action)
{
if (NULL == (token = strtok(NULL, w_space))) {
debug(98, 3)("(mod_header) -> parse line data does not existed\n");
goto err;
}
//??Ȼ??value, ?ͱ???????. ?? header һ???????ŵ?????.
stringInit(&info->value, token);
/* case http://sis.ssr.chinacache.com/rms/view.php?id=4124 */
if (*token == '\"') {
stringClean(&info->value);
stringInit(&info->value, token+1);
int len = 0;
while (NULL !=(token = strtok(NULL,w_space))){
len = strlen(token);
if (token[len-1] == '\"'){
stringAppend(&info->value, " ", 1);
stringAppend(&info->value, token, len-1);
break;
}
else if (strcmp("allow",token) == 0 || strcmp("deny",token) == 0)
goto err;
else {
stringAppend(&info->value, " ", 1);
stringAppend(&info->value, token, len);
}
}
}
}
}
//һ??û???κ????ݣ? ֱ?ӱ???
if(data->count == 0)
goto err;
else
cc_register_mod_param(mod, data, free_callback);
return 0;
err:
debug(98,1)("mod_header: parse error\n");
for(i=0; i<data->count; i++)
{
if(data->acp[i]->hdr)
{
if(strLen(data->acp[i]->hdr->header))
stringClean(&data->acp[i]->hdr->header);
if(strLen(data->acp[i]->hdr->value))
stringClean(&data->acp[i]->hdr->value);
memPoolFree(header_info_pool, data->acp[i]->hdr);
data->acp[i]->hdr = NULL;
}
if(data->acp[i])
{
memPoolFree(action_part_pool, data->acp[i]);
data->acp[i] = NULL;
}
}
errA:
if (data)
{
memPoolFree(mod_config_pool, data);
data = NULL;
}
return -1;
}
