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MEDIUM: pattern: report the precise argument parsing error when known.

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The argument parser knows what exact error it has faced, and the pattern
parser is able to report errors, so let's make use of it. From now on, it
becomes possible to detect such things :

$ ./haproxy -db -f echo5.cfg
[ALERT] 110/160344 (4791) : parsing [echo5.cfg:38] : 'stick': invalid arg 2 in fetch method 'payload' : Missing arguments (got 1/2), type 'unsigned integer' expected.
[ALERT] 110/160344 (4791) : parsing [echo5.cfg:39] : 'stick': invalid args in fetch method 'payload' : payload length must be > 0.
[ALERT] 110/160344 (4791) : parsing [echo5.cfg:40] : 'stick': invalid arg 3 in fetch method 'payload_lv' : Failed to parse 'x' as type 'signed integer'.
[ALERT] 110/160344 (4791) : parsing [echo5.cfg:41] : 'stick': invalid arg 4 in fetch method 'payload_lv' : End of arguments expected at ',13'.
[ALERT] 110/160344 (4791) : Error(s) found in configuration file : echo5.cfg
[ALERT] 110/160344 (4791) : Fatal errors found in configuration.
This commit is contained in:
Willy Tarreau 2012-04-20 16:04:47 +02:00
parent 21d68a6895
commit b27c0d35dd
1 changed files with 10 additions and 6 deletions
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16
src/pattern.c
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@ -316,7 +316,8 @@ struct pattern_expr *pattern_parse_expr(char **str, int *idx, char *err, int err
expr->fetch = fetch;
if (end != endw) {
char *err_msg;
char *err_msg = NULL;
int err_arg;
if (!fetch->arg_mask) {
p = my_strndup(str[*idx], endw - str[*idx]);
@ -327,12 +328,13 @@ struct pattern_expr *pattern_parse_expr(char **str, int *idx, char *err, int err
goto out_error;
}
if (make_arg_list(endw + 1, end - endw - 2, fetch->arg_mask, &expr->arg_p, NULL, NULL, NULL) < 0) {
if (make_arg_list(endw + 1, end - endw - 2, fetch->arg_mask, &expr->arg_p, &err_msg, NULL, &err_arg) < 0) {
p = my_strndup(str[*idx], endw - str[*idx]);
if (p) {
snprintf(err, err_size, "invalid args in fetch method '%s'.", p);
snprintf(err, err_size, "invalid arg %d in fetch method '%s' : %s.", err_arg+1, p, err_msg);
free(p);
}
free(err_msg);
goto out_error;
}
@ -405,7 +407,8 @@ struct pattern_expr *pattern_parse_expr(char **str, int *idx, char *err, int err
conv_expr->conv = conv;
if (end != endw) {
char *err_msg;
char *err_msg = NULL;
int err_arg;
if (!conv->arg_mask) {
p = my_strndup(str[*idx], endw - str[*idx]);
@ -417,12 +420,13 @@ struct pattern_expr *pattern_parse_expr(char **str, int *idx, char *err, int err
goto out_error;
}
if (make_arg_list(endw + 1, end - endw - 2, conv->arg_mask, &conv_expr->arg_p, NULL, NULL, NULL) < 0) {
if (make_arg_list(endw + 1, end - endw - 2, conv->arg_mask, &conv_expr->arg_p, &err_msg, NULL, &err_arg) < 0) {
p = my_strndup(str[*idx], endw - str[*idx]);
if (p) {
snprintf(err, err_size, "invalid args in conv method '%s'.", p);
snprintf(err, err_size, "invalid arg %d in conv method '%s' : %s.", err_arg+1, p, err_msg);
free(p);
}
free(err_msg);
goto out_error;
}